1 /* Language-independent node constructors for parse phase of GNU compiler.
2 Copyright (C) 1987-2019 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This file contains the low level primitives for operating on tree nodes,
21 including allocation, list operations, interning of identifiers,
22 construction of data type nodes and statement nodes,
23 and construction of type conversion nodes. It also contains
24 tables index by tree code that describe how to take apart
27 It is intended to be language-independent but can occasionally
28 calls language-dependent routines. */
32 #include "coretypes.h"
37 #include "tree-pass.h"
40 #include "diagnostic.h"
43 #include "fold-const.h"
44 #include "stor-layout.h"
47 #include "toplev.h" /* get_random_seed */
49 #include "common/common-target.h"
50 #include "langhooks.h"
51 #include "tree-inline.h"
52 #include "tree-iterator.h"
53 #include "internal-fn.h"
54 #include "gimple-iterator.h"
58 #include "langhooks-def.h"
59 #include "tree-diagnostic.h"
62 #include "print-tree.h"
63 #include "ipa-utils.h"
65 #include "stringpool.h"
69 #include "tree-vector-builder.h"
71 /* Tree code classes. */
73 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
74 #define END_OF_BASE_TREE_CODES tcc_exceptional,
76 const enum tree_code_class tree_code_type
[] = {
77 #include "all-tree.def"
81 #undef END_OF_BASE_TREE_CODES
83 /* Table indexed by tree code giving number of expression
84 operands beyond the fixed part of the node structure.
85 Not used for types or decls. */
87 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
88 #define END_OF_BASE_TREE_CODES 0,
90 const unsigned char tree_code_length
[] = {
91 #include "all-tree.def"
95 #undef END_OF_BASE_TREE_CODES
97 /* Names of tree components.
98 Used for printing out the tree and error messages. */
99 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
100 #define END_OF_BASE_TREE_CODES "@dummy",
102 static const char *const tree_code_name
[] = {
103 #include "all-tree.def"
107 #undef END_OF_BASE_TREE_CODES
109 /* Each tree code class has an associated string representation.
110 These must correspond to the tree_code_class entries. */
112 const char *const tree_code_class_strings
[] =
127 /* obstack.[ch] explicitly declined to prototype this. */
128 extern int _obstack_allocated_p (struct obstack
*h
, void *obj
);
130 /* Statistics-gathering stuff. */
132 static uint64_t tree_code_counts
[MAX_TREE_CODES
];
133 uint64_t tree_node_counts
[(int) all_kinds
];
134 uint64_t tree_node_sizes
[(int) all_kinds
];
136 /* Keep in sync with tree.h:enum tree_node_kind. */
137 static const char * const tree_node_kind_names
[] = {
156 /* Unique id for next decl created. */
157 static GTY(()) int next_decl_uid
;
158 /* Unique id for next type created. */
159 static GTY(()) unsigned next_type_uid
= 1;
160 /* Unique id for next debug decl created. Use negative numbers,
161 to catch erroneous uses. */
162 static GTY(()) int next_debug_decl_uid
;
164 /* Since we cannot rehash a type after it is in the table, we have to
165 keep the hash code. */
167 struct GTY((for_user
)) type_hash
{
172 /* Initial size of the hash table (rounded to next prime). */
173 #define TYPE_HASH_INITIAL_SIZE 1000
175 struct type_cache_hasher
: ggc_cache_ptr_hash
<type_hash
>
177 static hashval_t
hash (type_hash
*t
) { return t
->hash
; }
178 static bool equal (type_hash
*a
, type_hash
*b
);
181 keep_cache_entry (type_hash
*&t
)
183 return ggc_marked_p (t
->type
);
187 /* Now here is the hash table. When recording a type, it is added to
188 the slot whose index is the hash code. Note that the hash table is
189 used for several kinds of types (function types, array types and
190 array index range types, for now). While all these live in the
191 same table, they are completely independent, and the hash code is
192 computed differently for each of these. */
194 static GTY ((cache
)) hash_table
<type_cache_hasher
> *type_hash_table
;
196 /* Hash table and temporary node for larger integer const values. */
197 static GTY (()) tree int_cst_node
;
199 struct int_cst_hasher
: ggc_cache_ptr_hash
<tree_node
>
201 static hashval_t
hash (tree t
);
202 static bool equal (tree x
, tree y
);
205 static GTY ((cache
)) hash_table
<int_cst_hasher
> *int_cst_hash_table
;
207 /* Class and variable for making sure that there is a single POLY_INT_CST
208 for a given value. */
209 struct poly_int_cst_hasher
: ggc_cache_ptr_hash
<tree_node
>
211 typedef std::pair
<tree
, const poly_wide_int
*> compare_type
;
212 static hashval_t
hash (tree t
);
213 static bool equal (tree x
, const compare_type
&y
);
216 static GTY ((cache
)) hash_table
<poly_int_cst_hasher
> *poly_int_cst_hash_table
;
218 /* Hash table for optimization flags and target option flags. Use the same
219 hash table for both sets of options. Nodes for building the current
220 optimization and target option nodes. The assumption is most of the time
221 the options created will already be in the hash table, so we avoid
222 allocating and freeing up a node repeatably. */
223 static GTY (()) tree cl_optimization_node
;
224 static GTY (()) tree cl_target_option_node
;
226 struct cl_option_hasher
: ggc_cache_ptr_hash
<tree_node
>
228 static hashval_t
hash (tree t
);
229 static bool equal (tree x
, tree y
);
232 static GTY ((cache
)) hash_table
<cl_option_hasher
> *cl_option_hash_table
;
234 /* General tree->tree mapping structure for use in hash tables. */
238 hash_table
<tree_decl_map_cache_hasher
> *debug_expr_for_decl
;
241 hash_table
<tree_decl_map_cache_hasher
> *value_expr_for_decl
;
243 struct tree_vec_map_cache_hasher
: ggc_cache_ptr_hash
<tree_vec_map
>
245 static hashval_t
hash (tree_vec_map
*m
) { return DECL_UID (m
->base
.from
); }
248 equal (tree_vec_map
*a
, tree_vec_map
*b
)
250 return a
->base
.from
== b
->base
.from
;
254 keep_cache_entry (tree_vec_map
*&m
)
256 return ggc_marked_p (m
->base
.from
);
261 hash_table
<tree_vec_map_cache_hasher
> *debug_args_for_decl
;
263 static void set_type_quals (tree
, int);
264 static void print_type_hash_statistics (void);
265 static void print_debug_expr_statistics (void);
266 static void print_value_expr_statistics (void);
268 static tree
build_array_type_1 (tree
, tree
, bool, bool);
270 tree global_trees
[TI_MAX
];
271 tree integer_types
[itk_none
];
273 bool int_n_enabled_p
[NUM_INT_N_ENTS
];
274 struct int_n_trees_t int_n_trees
[NUM_INT_N_ENTS
];
276 bool tree_contains_struct
[MAX_TREE_CODES
][64];
278 /* Number of operands for each OpenMP clause. */
279 unsigned const char omp_clause_num_ops
[] =
281 0, /* OMP_CLAUSE_ERROR */
282 1, /* OMP_CLAUSE_PRIVATE */
283 1, /* OMP_CLAUSE_SHARED */
284 1, /* OMP_CLAUSE_FIRSTPRIVATE */
285 2, /* OMP_CLAUSE_LASTPRIVATE */
286 5, /* OMP_CLAUSE_REDUCTION */
287 5, /* OMP_CLAUSE_TASK_REDUCTION */
288 5, /* OMP_CLAUSE_IN_REDUCTION */
289 1, /* OMP_CLAUSE_COPYIN */
290 1, /* OMP_CLAUSE_COPYPRIVATE */
291 3, /* OMP_CLAUSE_LINEAR */
292 2, /* OMP_CLAUSE_ALIGNED */
293 1, /* OMP_CLAUSE_DEPEND */
294 1, /* OMP_CLAUSE_NONTEMPORAL */
295 1, /* OMP_CLAUSE_UNIFORM */
296 1, /* OMP_CLAUSE_TO_DECLARE */
297 1, /* OMP_CLAUSE_LINK */
298 2, /* OMP_CLAUSE_FROM */
299 2, /* OMP_CLAUSE_TO */
300 2, /* OMP_CLAUSE_MAP */
301 1, /* OMP_CLAUSE_USE_DEVICE_PTR */
302 1, /* OMP_CLAUSE_IS_DEVICE_PTR */
303 2, /* OMP_CLAUSE__CACHE_ */
304 2, /* OMP_CLAUSE_GANG */
305 1, /* OMP_CLAUSE_ASYNC */
306 1, /* OMP_CLAUSE_WAIT */
307 0, /* OMP_CLAUSE_AUTO */
308 0, /* OMP_CLAUSE_SEQ */
309 1, /* OMP_CLAUSE__LOOPTEMP_ */
310 1, /* OMP_CLAUSE__REDUCTEMP_ */
311 1, /* OMP_CLAUSE_IF */
312 1, /* OMP_CLAUSE_NUM_THREADS */
313 1, /* OMP_CLAUSE_SCHEDULE */
314 0, /* OMP_CLAUSE_NOWAIT */
315 1, /* OMP_CLAUSE_ORDERED */
316 0, /* OMP_CLAUSE_DEFAULT */
317 3, /* OMP_CLAUSE_COLLAPSE */
318 0, /* OMP_CLAUSE_UNTIED */
319 1, /* OMP_CLAUSE_FINAL */
320 0, /* OMP_CLAUSE_MERGEABLE */
321 1, /* OMP_CLAUSE_DEVICE */
322 1, /* OMP_CLAUSE_DIST_SCHEDULE */
323 0, /* OMP_CLAUSE_INBRANCH */
324 0, /* OMP_CLAUSE_NOTINBRANCH */
325 1, /* OMP_CLAUSE_NUM_TEAMS */
326 1, /* OMP_CLAUSE_THREAD_LIMIT */
327 0, /* OMP_CLAUSE_PROC_BIND */
328 1, /* OMP_CLAUSE_SAFELEN */
329 1, /* OMP_CLAUSE_SIMDLEN */
330 0, /* OMP_CLAUSE_FOR */
331 0, /* OMP_CLAUSE_PARALLEL */
332 0, /* OMP_CLAUSE_SECTIONS */
333 0, /* OMP_CLAUSE_TASKGROUP */
334 1, /* OMP_CLAUSE_PRIORITY */
335 1, /* OMP_CLAUSE_GRAINSIZE */
336 1, /* OMP_CLAUSE_NUM_TASKS */
337 0, /* OMP_CLAUSE_NOGROUP */
338 0, /* OMP_CLAUSE_THREADS */
339 0, /* OMP_CLAUSE_SIMD */
340 1, /* OMP_CLAUSE_HINT */
341 0, /* OMP_CLAUSE_DEFALTMAP */
342 1, /* OMP_CLAUSE__SIMDUID_ */
343 0, /* OMP_CLAUSE__SIMT_ */
344 0, /* OMP_CLAUSE_INDEPENDENT */
345 1, /* OMP_CLAUSE_WORKER */
346 1, /* OMP_CLAUSE_VECTOR */
347 1, /* OMP_CLAUSE_NUM_GANGS */
348 1, /* OMP_CLAUSE_NUM_WORKERS */
349 1, /* OMP_CLAUSE_VECTOR_LENGTH */
350 3, /* OMP_CLAUSE_TILE */
351 2, /* OMP_CLAUSE__GRIDDIM_ */
352 0, /* OMP_CLAUSE_IF_PRESENT */
353 0, /* OMP_CLAUSE_FINALIZE */
356 const char * const omp_clause_code_name
[] =
434 /* Return the tree node structure used by tree code CODE. */
436 static inline enum tree_node_structure_enum
437 tree_node_structure_for_code (enum tree_code code
)
439 switch (TREE_CODE_CLASS (code
))
441 case tcc_declaration
:
446 return TS_FIELD_DECL
;
452 return TS_LABEL_DECL
;
454 return TS_RESULT_DECL
;
455 case DEBUG_EXPR_DECL
:
458 return TS_CONST_DECL
;
462 return TS_FUNCTION_DECL
;
463 case TRANSLATION_UNIT_DECL
:
464 return TS_TRANSLATION_UNIT_DECL
;
466 return TS_DECL_NON_COMMON
;
470 return TS_TYPE_NON_COMMON
;
479 default: /* tcc_constant and tcc_exceptional */
484 /* tcc_constant cases. */
485 case VOID_CST
: return TS_TYPED
;
486 case INTEGER_CST
: return TS_INT_CST
;
487 case POLY_INT_CST
: return TS_POLY_INT_CST
;
488 case REAL_CST
: return TS_REAL_CST
;
489 case FIXED_CST
: return TS_FIXED_CST
;
490 case COMPLEX_CST
: return TS_COMPLEX
;
491 case VECTOR_CST
: return TS_VECTOR
;
492 case STRING_CST
: return TS_STRING
;
493 /* tcc_exceptional cases. */
494 case ERROR_MARK
: return TS_COMMON
;
495 case IDENTIFIER_NODE
: return TS_IDENTIFIER
;
496 case TREE_LIST
: return TS_LIST
;
497 case TREE_VEC
: return TS_VEC
;
498 case SSA_NAME
: return TS_SSA_NAME
;
499 case PLACEHOLDER_EXPR
: return TS_COMMON
;
500 case STATEMENT_LIST
: return TS_STATEMENT_LIST
;
501 case BLOCK
: return TS_BLOCK
;
502 case CONSTRUCTOR
: return TS_CONSTRUCTOR
;
503 case TREE_BINFO
: return TS_BINFO
;
504 case OMP_CLAUSE
: return TS_OMP_CLAUSE
;
505 case OPTIMIZATION_NODE
: return TS_OPTIMIZATION
;
506 case TARGET_OPTION_NODE
: return TS_TARGET_OPTION
;
514 /* Initialize tree_contains_struct to describe the hierarchy of tree
518 initialize_tree_contains_struct (void)
522 for (i
= ERROR_MARK
; i
< LAST_AND_UNUSED_TREE_CODE
; i
++)
525 enum tree_node_structure_enum ts_code
;
527 code
= (enum tree_code
) i
;
528 ts_code
= tree_node_structure_for_code (code
);
530 /* Mark the TS structure itself. */
531 tree_contains_struct
[code
][ts_code
] = 1;
533 /* Mark all the structures that TS is derived from. */
538 case TS_OPTIMIZATION
:
539 case TS_TARGET_OPTION
:
545 case TS_POLY_INT_CST
:
554 case TS_STATEMENT_LIST
:
555 MARK_TS_TYPED (code
);
559 case TS_DECL_MINIMAL
:
565 MARK_TS_COMMON (code
);
568 case TS_TYPE_WITH_LANG_SPECIFIC
:
569 MARK_TS_TYPE_COMMON (code
);
572 case TS_TYPE_NON_COMMON
:
573 MARK_TS_TYPE_WITH_LANG_SPECIFIC (code
);
577 MARK_TS_DECL_MINIMAL (code
);
582 MARK_TS_DECL_COMMON (code
);
585 case TS_DECL_NON_COMMON
:
586 MARK_TS_DECL_WITH_VIS (code
);
589 case TS_DECL_WITH_VIS
:
593 MARK_TS_DECL_WRTL (code
);
597 MARK_TS_DECL_COMMON (code
);
601 MARK_TS_DECL_WITH_VIS (code
);
605 case TS_FUNCTION_DECL
:
606 MARK_TS_DECL_NON_COMMON (code
);
609 case TS_TRANSLATION_UNIT_DECL
:
610 MARK_TS_DECL_COMMON (code
);
618 /* Basic consistency checks for attributes used in fold. */
619 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_DECL_NON_COMMON
]);
620 gcc_assert (tree_contains_struct
[TYPE_DECL
][TS_DECL_NON_COMMON
]);
621 gcc_assert (tree_contains_struct
[CONST_DECL
][TS_DECL_COMMON
]);
622 gcc_assert (tree_contains_struct
[VAR_DECL
][TS_DECL_COMMON
]);
623 gcc_assert (tree_contains_struct
[PARM_DECL
][TS_DECL_COMMON
]);
624 gcc_assert (tree_contains_struct
[RESULT_DECL
][TS_DECL_COMMON
]);
625 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_DECL_COMMON
]);
626 gcc_assert (tree_contains_struct
[TYPE_DECL
][TS_DECL_COMMON
]);
627 gcc_assert (tree_contains_struct
[TRANSLATION_UNIT_DECL
][TS_DECL_COMMON
]);
628 gcc_assert (tree_contains_struct
[LABEL_DECL
][TS_DECL_COMMON
]);
629 gcc_assert (tree_contains_struct
[FIELD_DECL
][TS_DECL_COMMON
]);
630 gcc_assert (tree_contains_struct
[VAR_DECL
][TS_DECL_WRTL
]);
631 gcc_assert (tree_contains_struct
[PARM_DECL
][TS_DECL_WRTL
]);
632 gcc_assert (tree_contains_struct
[RESULT_DECL
][TS_DECL_WRTL
]);
633 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_DECL_WRTL
]);
634 gcc_assert (tree_contains_struct
[LABEL_DECL
][TS_DECL_WRTL
]);
635 gcc_assert (tree_contains_struct
[CONST_DECL
][TS_DECL_MINIMAL
]);
636 gcc_assert (tree_contains_struct
[VAR_DECL
][TS_DECL_MINIMAL
]);
637 gcc_assert (tree_contains_struct
[PARM_DECL
][TS_DECL_MINIMAL
]);
638 gcc_assert (tree_contains_struct
[RESULT_DECL
][TS_DECL_MINIMAL
]);
639 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_DECL_MINIMAL
]);
640 gcc_assert (tree_contains_struct
[TYPE_DECL
][TS_DECL_MINIMAL
]);
641 gcc_assert (tree_contains_struct
[TRANSLATION_UNIT_DECL
][TS_DECL_MINIMAL
]);
642 gcc_assert (tree_contains_struct
[LABEL_DECL
][TS_DECL_MINIMAL
]);
643 gcc_assert (tree_contains_struct
[FIELD_DECL
][TS_DECL_MINIMAL
]);
644 gcc_assert (tree_contains_struct
[VAR_DECL
][TS_DECL_WITH_VIS
]);
645 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_DECL_WITH_VIS
]);
646 gcc_assert (tree_contains_struct
[TYPE_DECL
][TS_DECL_WITH_VIS
]);
647 gcc_assert (tree_contains_struct
[VAR_DECL
][TS_VAR_DECL
]);
648 gcc_assert (tree_contains_struct
[FIELD_DECL
][TS_FIELD_DECL
]);
649 gcc_assert (tree_contains_struct
[PARM_DECL
][TS_PARM_DECL
]);
650 gcc_assert (tree_contains_struct
[LABEL_DECL
][TS_LABEL_DECL
]);
651 gcc_assert (tree_contains_struct
[RESULT_DECL
][TS_RESULT_DECL
]);
652 gcc_assert (tree_contains_struct
[CONST_DECL
][TS_CONST_DECL
]);
653 gcc_assert (tree_contains_struct
[TYPE_DECL
][TS_TYPE_DECL
]);
654 gcc_assert (tree_contains_struct
[FUNCTION_DECL
][TS_FUNCTION_DECL
]);
655 gcc_assert (tree_contains_struct
[IMPORTED_DECL
][TS_DECL_MINIMAL
]);
656 gcc_assert (tree_contains_struct
[IMPORTED_DECL
][TS_DECL_COMMON
]);
657 gcc_assert (tree_contains_struct
[NAMELIST_DECL
][TS_DECL_MINIMAL
]);
658 gcc_assert (tree_contains_struct
[NAMELIST_DECL
][TS_DECL_COMMON
]);
667 /* Initialize the hash table of types. */
669 = hash_table
<type_cache_hasher
>::create_ggc (TYPE_HASH_INITIAL_SIZE
);
672 = hash_table
<tree_decl_map_cache_hasher
>::create_ggc (512);
675 = hash_table
<tree_decl_map_cache_hasher
>::create_ggc (512);
677 int_cst_hash_table
= hash_table
<int_cst_hasher
>::create_ggc (1024);
679 poly_int_cst_hash_table
= hash_table
<poly_int_cst_hasher
>::create_ggc (64);
681 int_cst_node
= make_int_cst (1, 1);
683 cl_option_hash_table
= hash_table
<cl_option_hasher
>::create_ggc (64);
685 cl_optimization_node
= make_node (OPTIMIZATION_NODE
);
686 cl_target_option_node
= make_node (TARGET_OPTION_NODE
);
688 /* Initialize the tree_contains_struct array. */
689 initialize_tree_contains_struct ();
690 lang_hooks
.init_ts ();
694 /* The name of the object as the assembler will see it (but before any
695 translations made by ASM_OUTPUT_LABELREF). Often this is the same
696 as DECL_NAME. It is an IDENTIFIER_NODE. */
698 decl_assembler_name (tree decl
)
700 if (!DECL_ASSEMBLER_NAME_SET_P (decl
))
701 lang_hooks
.set_decl_assembler_name (decl
);
702 return DECL_ASSEMBLER_NAME_RAW (decl
);
705 /* The DECL_ASSEMBLER_NAME_RAW of DECL is being explicitly set to NAME
706 (either of which may be NULL). Inform the FE, if this changes the
710 overwrite_decl_assembler_name (tree decl
, tree name
)
712 if (DECL_ASSEMBLER_NAME_RAW (decl
) != name
)
713 lang_hooks
.overwrite_decl_assembler_name (decl
, name
);
716 /* When the target supports COMDAT groups, this indicates which group the
717 DECL is associated with. This can be either an IDENTIFIER_NODE or a
718 decl, in which case its DECL_ASSEMBLER_NAME identifies the group. */
720 decl_comdat_group (const_tree node
)
722 struct symtab_node
*snode
= symtab_node::get (node
);
725 return snode
->get_comdat_group ();
728 /* Likewise, but make sure it's been reduced to an IDENTIFIER_NODE. */
730 decl_comdat_group_id (const_tree node
)
732 struct symtab_node
*snode
= symtab_node::get (node
);
735 return snode
->get_comdat_group_id ();
738 /* When the target supports named section, return its name as IDENTIFIER_NODE
739 or NULL if it is in no section. */
741 decl_section_name (const_tree node
)
743 struct symtab_node
*snode
= symtab_node::get (node
);
746 return snode
->get_section ();
749 /* Set section name of NODE to VALUE (that is expected to be
752 set_decl_section_name (tree node
, const char *value
)
754 struct symtab_node
*snode
;
758 snode
= symtab_node::get (node
);
762 else if (VAR_P (node
))
763 snode
= varpool_node::get_create (node
);
765 snode
= cgraph_node::get_create (node
);
766 snode
->set_section (value
);
769 /* Return TLS model of a variable NODE. */
771 decl_tls_model (const_tree node
)
773 struct varpool_node
*snode
= varpool_node::get (node
);
775 return TLS_MODEL_NONE
;
776 return snode
->tls_model
;
779 /* Set TLS model of variable NODE to MODEL. */
781 set_decl_tls_model (tree node
, enum tls_model model
)
783 struct varpool_node
*vnode
;
785 if (model
== TLS_MODEL_NONE
)
787 vnode
= varpool_node::get (node
);
792 vnode
= varpool_node::get_create (node
);
793 vnode
->tls_model
= model
;
796 /* Compute the number of bytes occupied by a tree with code CODE.
797 This function cannot be used for nodes that have variable sizes,
798 including TREE_VEC, INTEGER_CST, STRING_CST, and CALL_EXPR. */
800 tree_code_size (enum tree_code code
)
802 switch (TREE_CODE_CLASS (code
))
804 case tcc_declaration
: /* A decl node */
807 case FIELD_DECL
: return sizeof (tree_field_decl
);
808 case PARM_DECL
: return sizeof (tree_parm_decl
);
809 case VAR_DECL
: return sizeof (tree_var_decl
);
810 case LABEL_DECL
: return sizeof (tree_label_decl
);
811 case RESULT_DECL
: return sizeof (tree_result_decl
);
812 case CONST_DECL
: return sizeof (tree_const_decl
);
813 case TYPE_DECL
: return sizeof (tree_type_decl
);
814 case FUNCTION_DECL
: return sizeof (tree_function_decl
);
815 case DEBUG_EXPR_DECL
: return sizeof (tree_decl_with_rtl
);
816 case TRANSLATION_UNIT_DECL
: return sizeof (tree_translation_unit_decl
);
819 case NAMELIST_DECL
: return sizeof (tree_decl_non_common
);
821 gcc_checking_assert (code
>= NUM_TREE_CODES
);
822 return lang_hooks
.tree_size (code
);
825 case tcc_type
: /* a type node */
836 case FIXED_POINT_TYPE
:
842 case QUAL_UNION_TYPE
:
846 case LANG_TYPE
: return sizeof (tree_type_non_common
);
848 gcc_checking_assert (code
>= NUM_TREE_CODES
);
849 return lang_hooks
.tree_size (code
);
852 case tcc_reference
: /* a reference */
853 case tcc_expression
: /* an expression */
854 case tcc_statement
: /* an expression with side effects */
855 case tcc_comparison
: /* a comparison expression */
856 case tcc_unary
: /* a unary arithmetic expression */
857 case tcc_binary
: /* a binary arithmetic expression */
858 return (sizeof (struct tree_exp
)
859 + (TREE_CODE_LENGTH (code
) - 1) * sizeof (tree
));
861 case tcc_constant
: /* a constant */
864 case VOID_CST
: return sizeof (tree_typed
);
865 case INTEGER_CST
: gcc_unreachable ();
866 case POLY_INT_CST
: return sizeof (tree_poly_int_cst
);
867 case REAL_CST
: return sizeof (tree_real_cst
);
868 case FIXED_CST
: return sizeof (tree_fixed_cst
);
869 case COMPLEX_CST
: return sizeof (tree_complex
);
870 case VECTOR_CST
: gcc_unreachable ();
871 case STRING_CST
: gcc_unreachable ();
873 gcc_checking_assert (code
>= NUM_TREE_CODES
);
874 return lang_hooks
.tree_size (code
);
877 case tcc_exceptional
: /* something random, like an identifier. */
880 case IDENTIFIER_NODE
: return lang_hooks
.identifier_size
;
881 case TREE_LIST
: return sizeof (tree_list
);
884 case PLACEHOLDER_EXPR
: return sizeof (tree_common
);
886 case TREE_VEC
: gcc_unreachable ();
887 case OMP_CLAUSE
: gcc_unreachable ();
889 case SSA_NAME
: return sizeof (tree_ssa_name
);
891 case STATEMENT_LIST
: return sizeof (tree_statement_list
);
892 case BLOCK
: return sizeof (struct tree_block
);
893 case CONSTRUCTOR
: return sizeof (tree_constructor
);
894 case OPTIMIZATION_NODE
: return sizeof (tree_optimization_option
);
895 case TARGET_OPTION_NODE
: return sizeof (tree_target_option
);
898 gcc_checking_assert (code
>= NUM_TREE_CODES
);
899 return lang_hooks
.tree_size (code
);
907 /* Compute the number of bytes occupied by NODE. This routine only
908 looks at TREE_CODE, except for those nodes that have variable sizes. */
910 tree_size (const_tree node
)
912 const enum tree_code code
= TREE_CODE (node
);
916 return (sizeof (struct tree_int_cst
)
917 + (TREE_INT_CST_EXT_NUNITS (node
) - 1) * sizeof (HOST_WIDE_INT
));
920 return (offsetof (struct tree_binfo
, base_binfos
)
922 ::embedded_size (BINFO_N_BASE_BINFOS (node
)));
925 return (sizeof (struct tree_vec
)
926 + (TREE_VEC_LENGTH (node
) - 1) * sizeof (tree
));
929 return (sizeof (struct tree_vector
)
930 + (vector_cst_encoded_nelts (node
) - 1) * sizeof (tree
));
933 return TREE_STRING_LENGTH (node
) + offsetof (struct tree_string
, str
) + 1;
936 return (sizeof (struct tree_omp_clause
)
937 + (omp_clause_num_ops
[OMP_CLAUSE_CODE (node
)] - 1)
941 if (TREE_CODE_CLASS (code
) == tcc_vl_exp
)
942 return (sizeof (struct tree_exp
)
943 + (VL_EXP_OPERAND_LENGTH (node
) - 1) * sizeof (tree
));
945 return tree_code_size (code
);
949 /* Return tree node kind based on tree CODE. */
951 static tree_node_kind
952 get_stats_node_kind (enum tree_code code
)
954 enum tree_code_class type
= TREE_CODE_CLASS (code
);
958 case tcc_declaration
: /* A decl node */
960 case tcc_type
: /* a type node */
962 case tcc_statement
: /* an expression with side effects */
964 case tcc_reference
: /* a reference */
966 case tcc_expression
: /* an expression */
967 case tcc_comparison
: /* a comparison expression */
968 case tcc_unary
: /* a unary arithmetic expression */
969 case tcc_binary
: /* a binary arithmetic expression */
971 case tcc_constant
: /* a constant */
973 case tcc_exceptional
: /* something random, like an identifier. */
976 case IDENTIFIER_NODE
:
983 return ssa_name_kind
;
989 return omp_clause_kind
;
1001 /* Record interesting allocation statistics for a tree node with CODE
1005 record_node_allocation_statistics (enum tree_code code
, size_t length
)
1007 if (!GATHER_STATISTICS
)
1010 tree_node_kind kind
= get_stats_node_kind (code
);
1012 tree_code_counts
[(int) code
]++;
1013 tree_node_counts
[(int) kind
]++;
1014 tree_node_sizes
[(int) kind
] += length
;
1017 /* Allocate and return a new UID from the DECL_UID namespace. */
1020 allocate_decl_uid (void)
1022 return next_decl_uid
++;
1025 /* Return a newly allocated node of code CODE. For decl and type
1026 nodes, some other fields are initialized. The rest of the node is
1027 initialized to zero. This function cannot be used for TREE_VEC,
1028 INTEGER_CST or OMP_CLAUSE nodes, which is enforced by asserts in
1031 Achoo! I got a code in the node. */
1034 make_node (enum tree_code code MEM_STAT_DECL
)
1037 enum tree_code_class type
= TREE_CODE_CLASS (code
);
1038 size_t length
= tree_code_size (code
);
1040 record_node_allocation_statistics (code
, length
);
1042 t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
1043 TREE_SET_CODE (t
, code
);
1048 if (code
!= DEBUG_BEGIN_STMT
)
1049 TREE_SIDE_EFFECTS (t
) = 1;
1052 case tcc_declaration
:
1053 if (CODE_CONTAINS_STRUCT (code
, TS_DECL_COMMON
))
1055 if (code
== FUNCTION_DECL
)
1057 SET_DECL_ALIGN (t
, FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY
));
1058 SET_DECL_MODE (t
, FUNCTION_MODE
);
1061 SET_DECL_ALIGN (t
, 1);
1063 DECL_SOURCE_LOCATION (t
) = input_location
;
1064 if (TREE_CODE (t
) == DEBUG_EXPR_DECL
)
1065 DECL_UID (t
) = --next_debug_decl_uid
;
1068 DECL_UID (t
) = allocate_decl_uid ();
1069 SET_DECL_PT_UID (t
, -1);
1071 if (TREE_CODE (t
) == LABEL_DECL
)
1072 LABEL_DECL_UID (t
) = -1;
1077 TYPE_UID (t
) = next_type_uid
++;
1078 SET_TYPE_ALIGN (t
, BITS_PER_UNIT
);
1079 TYPE_USER_ALIGN (t
) = 0;
1080 TYPE_MAIN_VARIANT (t
) = t
;
1081 TYPE_CANONICAL (t
) = t
;
1083 /* Default to no attributes for type, but let target change that. */
1084 TYPE_ATTRIBUTES (t
) = NULL_TREE
;
1085 targetm
.set_default_type_attributes (t
);
1087 /* We have not yet computed the alias set for this type. */
1088 TYPE_ALIAS_SET (t
) = -1;
1092 TREE_CONSTANT (t
) = 1;
1095 case tcc_expression
:
1101 case PREDECREMENT_EXPR
:
1102 case PREINCREMENT_EXPR
:
1103 case POSTDECREMENT_EXPR
:
1104 case POSTINCREMENT_EXPR
:
1105 /* All of these have side-effects, no matter what their
1107 TREE_SIDE_EFFECTS (t
) = 1;
1115 case tcc_exceptional
:
1118 case TARGET_OPTION_NODE
:
1119 TREE_TARGET_OPTION(t
)
1120 = ggc_cleared_alloc
<struct cl_target_option
> ();
1123 case OPTIMIZATION_NODE
:
1124 TREE_OPTIMIZATION (t
)
1125 = ggc_cleared_alloc
<struct cl_optimization
> ();
1134 /* Other classes need no special treatment. */
1141 /* Free tree node. */
1144 free_node (tree node
)
1146 enum tree_code code
= TREE_CODE (node
);
1147 if (GATHER_STATISTICS
)
1149 enum tree_node_kind kind
= get_stats_node_kind (code
);
1151 gcc_checking_assert (tree_code_counts
[(int) TREE_CODE (node
)] != 0);
1152 gcc_checking_assert (tree_node_counts
[(int) kind
] != 0);
1153 gcc_checking_assert (tree_node_sizes
[(int) kind
] >= tree_size (node
));
1155 tree_code_counts
[(int) TREE_CODE (node
)]--;
1156 tree_node_counts
[(int) kind
]--;
1157 tree_node_sizes
[(int) kind
] -= tree_size (node
);
1159 if (CODE_CONTAINS_STRUCT (code
, TS_CONSTRUCTOR
))
1160 vec_free (CONSTRUCTOR_ELTS (node
));
1161 else if (code
== BLOCK
)
1162 vec_free (BLOCK_NONLOCALIZED_VARS (node
));
1163 else if (code
== TREE_BINFO
)
1164 vec_free (BINFO_BASE_ACCESSES (node
));
1168 /* Return a new node with the same contents as NODE except that its
1169 TREE_CHAIN, if it has one, is zero and it has a fresh uid. */
1172 copy_node (tree node MEM_STAT_DECL
)
1175 enum tree_code code
= TREE_CODE (node
);
1178 gcc_assert (code
!= STATEMENT_LIST
);
1180 length
= tree_size (node
);
1181 record_node_allocation_statistics (code
, length
);
1182 t
= ggc_alloc_tree_node_stat (length PASS_MEM_STAT
);
1183 memcpy (t
, node
, length
);
1185 if (CODE_CONTAINS_STRUCT (code
, TS_COMMON
))
1187 TREE_ASM_WRITTEN (t
) = 0;
1188 TREE_VISITED (t
) = 0;
1190 if (TREE_CODE_CLASS (code
) == tcc_declaration
)
1192 if (code
== DEBUG_EXPR_DECL
)
1193 DECL_UID (t
) = --next_debug_decl_uid
;
1196 DECL_UID (t
) = allocate_decl_uid ();
1197 if (DECL_PT_UID_SET_P (node
))
1198 SET_DECL_PT_UID (t
, DECL_PT_UID (node
));
1200 if ((TREE_CODE (node
) == PARM_DECL
|| VAR_P (node
))
1201 && DECL_HAS_VALUE_EXPR_P (node
))
1203 SET_DECL_VALUE_EXPR (t
, DECL_VALUE_EXPR (node
));
1204 DECL_HAS_VALUE_EXPR_P (t
) = 1;
1206 /* DECL_DEBUG_EXPR is copied explicitely by callers. */
1209 DECL_HAS_DEBUG_EXPR_P (t
) = 0;
1210 t
->decl_with_vis
.symtab_node
= NULL
;
1212 if (VAR_P (node
) && DECL_HAS_INIT_PRIORITY_P (node
))
1214 SET_DECL_INIT_PRIORITY (t
, DECL_INIT_PRIORITY (node
));
1215 DECL_HAS_INIT_PRIORITY_P (t
) = 1;
1217 if (TREE_CODE (node
) == FUNCTION_DECL
)
1219 DECL_STRUCT_FUNCTION (t
) = NULL
;
1220 t
->decl_with_vis
.symtab_node
= NULL
;
1223 else if (TREE_CODE_CLASS (code
) == tcc_type
)
1225 TYPE_UID (t
) = next_type_uid
++;
1226 /* The following is so that the debug code for
1227 the copy is different from the original type.
1228 The two statements usually duplicate each other
1229 (because they clear fields of the same union),
1230 but the optimizer should catch that. */
1231 TYPE_SYMTAB_ADDRESS (t
) = 0;
1232 TYPE_SYMTAB_DIE (t
) = 0;
1234 /* Do not copy the values cache. */
1235 if (TYPE_CACHED_VALUES_P (t
))
1237 TYPE_CACHED_VALUES_P (t
) = 0;
1238 TYPE_CACHED_VALUES (t
) = NULL_TREE
;
1241 else if (code
== TARGET_OPTION_NODE
)
1243 TREE_TARGET_OPTION (t
) = ggc_alloc
<struct cl_target_option
>();
1244 memcpy (TREE_TARGET_OPTION (t
), TREE_TARGET_OPTION (node
),
1245 sizeof (struct cl_target_option
));
1247 else if (code
== OPTIMIZATION_NODE
)
1249 TREE_OPTIMIZATION (t
) = ggc_alloc
<struct cl_optimization
>();
1250 memcpy (TREE_OPTIMIZATION (t
), TREE_OPTIMIZATION (node
),
1251 sizeof (struct cl_optimization
));
1257 /* Return a copy of a chain of nodes, chained through the TREE_CHAIN field.
1258 For example, this can copy a list made of TREE_LIST nodes. */
1261 copy_list (tree list
)
1269 head
= prev
= copy_node (list
);
1270 next
= TREE_CHAIN (list
);
1273 TREE_CHAIN (prev
) = copy_node (next
);
1274 prev
= TREE_CHAIN (prev
);
1275 next
= TREE_CHAIN (next
);
1281 /* Return the value that TREE_INT_CST_EXT_NUNITS should have for an
1282 INTEGER_CST with value CST and type TYPE. */
1285 get_int_cst_ext_nunits (tree type
, const wide_int
&cst
)
1287 gcc_checking_assert (cst
.get_precision () == TYPE_PRECISION (type
));
1288 /* We need extra HWIs if CST is an unsigned integer with its
1290 if (TYPE_UNSIGNED (type
) && wi::neg_p (cst
))
1291 return cst
.get_precision () / HOST_BITS_PER_WIDE_INT
+ 1;
1292 return cst
.get_len ();
1295 /* Return a new INTEGER_CST with value CST and type TYPE. */
1298 build_new_int_cst (tree type
, const wide_int
&cst
)
1300 unsigned int len
= cst
.get_len ();
1301 unsigned int ext_len
= get_int_cst_ext_nunits (type
, cst
);
1302 tree nt
= make_int_cst (len
, ext_len
);
1307 TREE_INT_CST_ELT (nt
, ext_len
)
1308 = zext_hwi (-1, cst
.get_precision () % HOST_BITS_PER_WIDE_INT
);
1309 for (unsigned int i
= len
; i
< ext_len
; ++i
)
1310 TREE_INT_CST_ELT (nt
, i
) = -1;
1312 else if (TYPE_UNSIGNED (type
)
1313 && cst
.get_precision () < len
* HOST_BITS_PER_WIDE_INT
)
1316 TREE_INT_CST_ELT (nt
, len
)
1317 = zext_hwi (cst
.elt (len
),
1318 cst
.get_precision () % HOST_BITS_PER_WIDE_INT
);
1321 for (unsigned int i
= 0; i
< len
; i
++)
1322 TREE_INT_CST_ELT (nt
, i
) = cst
.elt (i
);
1323 TREE_TYPE (nt
) = type
;
1327 /* Return a new POLY_INT_CST with coefficients COEFFS and type TYPE. */
1330 build_new_poly_int_cst (tree type
, tree (&coeffs
)[NUM_POLY_INT_COEFFS
]
1333 size_t length
= sizeof (struct tree_poly_int_cst
);
1334 record_node_allocation_statistics (POLY_INT_CST
, length
);
1336 tree t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
1338 TREE_SET_CODE (t
, POLY_INT_CST
);
1339 TREE_CONSTANT (t
) = 1;
1340 TREE_TYPE (t
) = type
;
1341 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1342 POLY_INT_CST_COEFF (t
, i
) = coeffs
[i
];
1346 /* Create a constant tree that contains CST sign-extended to TYPE. */
1349 build_int_cst (tree type
, poly_int64 cst
)
1351 /* Support legacy code. */
1353 type
= integer_type_node
;
1355 return wide_int_to_tree (type
, wi::shwi (cst
, TYPE_PRECISION (type
)));
1358 /* Create a constant tree that contains CST zero-extended to TYPE. */
1361 build_int_cstu (tree type
, poly_uint64 cst
)
1363 return wide_int_to_tree (type
, wi::uhwi (cst
, TYPE_PRECISION (type
)));
1366 /* Create a constant tree that contains CST sign-extended to TYPE. */
1369 build_int_cst_type (tree type
, poly_int64 cst
)
1372 return wide_int_to_tree (type
, wi::shwi (cst
, TYPE_PRECISION (type
)));
1375 /* Constructs tree in type TYPE from with value given by CST. Signedness
1376 of CST is assumed to be the same as the signedness of TYPE. */
1379 double_int_to_tree (tree type
, double_int cst
)
1381 return wide_int_to_tree (type
, widest_int::from (cst
, TYPE_SIGN (type
)));
1384 /* We force the wide_int CST to the range of the type TYPE by sign or
1385 zero extending it. OVERFLOWABLE indicates if we are interested in
1386 overflow of the value, when >0 we are only interested in signed
1387 overflow, for <0 we are interested in any overflow. OVERFLOWED
1388 indicates whether overflow has already occurred. CONST_OVERFLOWED
1389 indicates whether constant overflow has already occurred. We force
1390 T's value to be within range of T's type (by setting to 0 or 1 all
1391 the bits outside the type's range). We set TREE_OVERFLOWED if,
1392 OVERFLOWED is nonzero,
1393 or OVERFLOWABLE is >0 and signed overflow occurs
1394 or OVERFLOWABLE is <0 and any overflow occurs
1395 We return a new tree node for the extended wide_int. The node
1396 is shared if no overflow flags are set. */
1400 force_fit_type (tree type
, const poly_wide_int_ref
&cst
,
1401 int overflowable
, bool overflowed
)
1403 signop sign
= TYPE_SIGN (type
);
1405 /* If we need to set overflow flags, return a new unshared node. */
1406 if (overflowed
|| !wi::fits_to_tree_p (cst
, type
))
1410 || (overflowable
> 0 && sign
== SIGNED
))
1412 poly_wide_int tmp
= poly_wide_int::from (cst
, TYPE_PRECISION (type
),
1415 if (tmp
.is_constant ())
1416 t
= build_new_int_cst (type
, tmp
.coeffs
[0]);
1419 tree coeffs
[NUM_POLY_INT_COEFFS
];
1420 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1422 coeffs
[i
] = build_new_int_cst (type
, tmp
.coeffs
[i
]);
1423 TREE_OVERFLOW (coeffs
[i
]) = 1;
1425 t
= build_new_poly_int_cst (type
, coeffs
);
1427 TREE_OVERFLOW (t
) = 1;
1432 /* Else build a shared node. */
1433 return wide_int_to_tree (type
, cst
);
1436 /* These are the hash table functions for the hash table of INTEGER_CST
1437 nodes of a sizetype. */
1439 /* Return the hash code X, an INTEGER_CST. */
1442 int_cst_hasher::hash (tree x
)
1444 const_tree
const t
= x
;
1445 hashval_t code
= TYPE_UID (TREE_TYPE (t
));
1448 for (i
= 0; i
< TREE_INT_CST_NUNITS (t
); i
++)
1449 code
= iterative_hash_host_wide_int (TREE_INT_CST_ELT(t
, i
), code
);
1454 /* Return nonzero if the value represented by *X (an INTEGER_CST tree node)
1455 is the same as that given by *Y, which is the same. */
1458 int_cst_hasher::equal (tree x
, tree y
)
1460 const_tree
const xt
= x
;
1461 const_tree
const yt
= y
;
1463 if (TREE_TYPE (xt
) != TREE_TYPE (yt
)
1464 || TREE_INT_CST_NUNITS (xt
) != TREE_INT_CST_NUNITS (yt
)
1465 || TREE_INT_CST_EXT_NUNITS (xt
) != TREE_INT_CST_EXT_NUNITS (yt
))
1468 for (int i
= 0; i
< TREE_INT_CST_NUNITS (xt
); i
++)
1469 if (TREE_INT_CST_ELT (xt
, i
) != TREE_INT_CST_ELT (yt
, i
))
1475 /* Create an INT_CST node of TYPE and value CST.
1476 The returned node is always shared. For small integers we use a
1477 per-type vector cache, for larger ones we use a single hash table.
1478 The value is extended from its precision according to the sign of
1479 the type to be a multiple of HOST_BITS_PER_WIDE_INT. This defines
1480 the upper bits and ensures that hashing and value equality based
1481 upon the underlying HOST_WIDE_INTs works without masking. */
1484 wide_int_to_tree_1 (tree type
, const wide_int_ref
&pcst
)
1491 unsigned int prec
= TYPE_PRECISION (type
);
1492 signop sgn
= TYPE_SIGN (type
);
1494 /* Verify that everything is canonical. */
1495 int l
= pcst
.get_len ();
1498 if (pcst
.elt (l
- 1) == 0)
1499 gcc_checking_assert (pcst
.elt (l
- 2) < 0);
1500 if (pcst
.elt (l
- 1) == HOST_WIDE_INT_M1
)
1501 gcc_checking_assert (pcst
.elt (l
- 2) >= 0);
1504 wide_int cst
= wide_int::from (pcst
, prec
, sgn
);
1505 unsigned int ext_len
= get_int_cst_ext_nunits (type
, cst
);
1509 /* We just need to store a single HOST_WIDE_INT. */
1511 if (TYPE_UNSIGNED (type
))
1512 hwi
= cst
.to_uhwi ();
1514 hwi
= cst
.to_shwi ();
1516 switch (TREE_CODE (type
))
1519 gcc_assert (hwi
== 0);
1523 case REFERENCE_TYPE
:
1524 /* Cache NULL pointer and zero bounds. */
1533 /* Cache false or true. */
1535 if (IN_RANGE (hwi
, 0, 1))
1541 if (TYPE_SIGN (type
) == UNSIGNED
)
1544 limit
= INTEGER_SHARE_LIMIT
;
1545 if (IN_RANGE (hwi
, 0, INTEGER_SHARE_LIMIT
- 1))
1550 /* Cache [-1, N). */
1551 limit
= INTEGER_SHARE_LIMIT
+ 1;
1552 if (IN_RANGE (hwi
, -1, INTEGER_SHARE_LIMIT
- 1))
1566 /* Look for it in the type's vector of small shared ints. */
1567 if (!TYPE_CACHED_VALUES_P (type
))
1569 TYPE_CACHED_VALUES_P (type
) = 1;
1570 TYPE_CACHED_VALUES (type
) = make_tree_vec (limit
);
1573 t
= TREE_VEC_ELT (TYPE_CACHED_VALUES (type
), ix
);
1575 /* Make sure no one is clobbering the shared constant. */
1576 gcc_checking_assert (TREE_TYPE (t
) == type
1577 && TREE_INT_CST_NUNITS (t
) == 1
1578 && TREE_INT_CST_OFFSET_NUNITS (t
) == 1
1579 && TREE_INT_CST_EXT_NUNITS (t
) == 1
1580 && TREE_INT_CST_ELT (t
, 0) == hwi
);
1583 /* Create a new shared int. */
1584 t
= build_new_int_cst (type
, cst
);
1585 TREE_VEC_ELT (TYPE_CACHED_VALUES (type
), ix
) = t
;
1590 /* Use the cache of larger shared ints, using int_cst_node as
1593 TREE_INT_CST_ELT (int_cst_node
, 0) = hwi
;
1594 TREE_TYPE (int_cst_node
) = type
;
1596 tree
*slot
= int_cst_hash_table
->find_slot (int_cst_node
, INSERT
);
1600 /* Insert this one into the hash table. */
1603 /* Make a new node for next time round. */
1604 int_cst_node
= make_int_cst (1, 1);
1610 /* The value either hashes properly or we drop it on the floor
1611 for the gc to take care of. There will not be enough of them
1614 tree nt
= build_new_int_cst (type
, cst
);
1615 tree
*slot
= int_cst_hash_table
->find_slot (nt
, INSERT
);
1619 /* Insert this one into the hash table. */
1631 poly_int_cst_hasher::hash (tree t
)
1633 inchash::hash hstate
;
1635 hstate
.add_int (TYPE_UID (TREE_TYPE (t
)));
1636 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1637 hstate
.add_wide_int (wi::to_wide (POLY_INT_CST_COEFF (t
, i
)));
1639 return hstate
.end ();
1643 poly_int_cst_hasher::equal (tree x
, const compare_type
&y
)
1645 if (TREE_TYPE (x
) != y
.first
)
1647 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1648 if (wi::to_wide (POLY_INT_CST_COEFF (x
, i
)) != y
.second
->coeffs
[i
])
1653 /* Build a POLY_INT_CST node with type TYPE and with the elements in VALUES.
1654 The elements must also have type TYPE. */
1657 build_poly_int_cst (tree type
, const poly_wide_int_ref
&values
)
1659 unsigned int prec
= TYPE_PRECISION (type
);
1660 gcc_assert (prec
<= values
.coeffs
[0].get_precision ());
1661 poly_wide_int c
= poly_wide_int::from (values
, prec
, SIGNED
);
1664 h
.add_int (TYPE_UID (type
));
1665 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1666 h
.add_wide_int (c
.coeffs
[i
]);
1667 poly_int_cst_hasher::compare_type
comp (type
, &c
);
1668 tree
*slot
= poly_int_cst_hash_table
->find_slot_with_hash (comp
, h
.end (),
1670 if (*slot
== NULL_TREE
)
1672 tree coeffs
[NUM_POLY_INT_COEFFS
];
1673 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
1674 coeffs
[i
] = wide_int_to_tree_1 (type
, c
.coeffs
[i
]);
1675 *slot
= build_new_poly_int_cst (type
, coeffs
);
1680 /* Create a constant tree with value VALUE in type TYPE. */
1683 wide_int_to_tree (tree type
, const poly_wide_int_ref
&value
)
1685 if (value
.is_constant ())
1686 return wide_int_to_tree_1 (type
, value
.coeffs
[0]);
1687 return build_poly_int_cst (type
, value
);
1691 cache_integer_cst (tree t
)
1693 tree type
= TREE_TYPE (t
);
1696 int prec
= TYPE_PRECISION (type
);
1698 gcc_assert (!TREE_OVERFLOW (t
));
1700 switch (TREE_CODE (type
))
1703 gcc_assert (integer_zerop (t
));
1707 case REFERENCE_TYPE
:
1708 /* Cache NULL pointer. */
1709 if (integer_zerop (t
))
1717 /* Cache false or true. */
1719 if (wi::ltu_p (wi::to_wide (t
), 2))
1720 ix
= TREE_INT_CST_ELT (t
, 0);
1725 if (TYPE_UNSIGNED (type
))
1728 limit
= INTEGER_SHARE_LIMIT
;
1730 /* This is a little hokie, but if the prec is smaller than
1731 what is necessary to hold INTEGER_SHARE_LIMIT, then the
1732 obvious test will not get the correct answer. */
1733 if (prec
< HOST_BITS_PER_WIDE_INT
)
1735 if (tree_to_uhwi (t
) < (unsigned HOST_WIDE_INT
) INTEGER_SHARE_LIMIT
)
1736 ix
= tree_to_uhwi (t
);
1738 else if (wi::ltu_p (wi::to_wide (t
), INTEGER_SHARE_LIMIT
))
1739 ix
= tree_to_uhwi (t
);
1744 limit
= INTEGER_SHARE_LIMIT
+ 1;
1746 if (integer_minus_onep (t
))
1748 else if (!wi::neg_p (wi::to_wide (t
)))
1750 if (prec
< HOST_BITS_PER_WIDE_INT
)
1752 if (tree_to_shwi (t
) < INTEGER_SHARE_LIMIT
)
1753 ix
= tree_to_shwi (t
) + 1;
1755 else if (wi::ltu_p (wi::to_wide (t
), INTEGER_SHARE_LIMIT
))
1756 ix
= tree_to_shwi (t
) + 1;
1770 /* Look for it in the type's vector of small shared ints. */
1771 if (!TYPE_CACHED_VALUES_P (type
))
1773 TYPE_CACHED_VALUES_P (type
) = 1;
1774 TYPE_CACHED_VALUES (type
) = make_tree_vec (limit
);
1777 gcc_assert (TREE_VEC_ELT (TYPE_CACHED_VALUES (type
), ix
) == NULL_TREE
);
1778 TREE_VEC_ELT (TYPE_CACHED_VALUES (type
), ix
) = t
;
1782 /* Use the cache of larger shared ints. */
1783 tree
*slot
= int_cst_hash_table
->find_slot (t
, INSERT
);
1784 /* If there is already an entry for the number verify it's the
1787 gcc_assert (wi::to_wide (tree (*slot
)) == wi::to_wide (t
));
1789 /* Otherwise insert this one into the hash table. */
1795 /* Builds an integer constant in TYPE such that lowest BITS bits are ones
1796 and the rest are zeros. */
1799 build_low_bits_mask (tree type
, unsigned bits
)
1801 gcc_assert (bits
<= TYPE_PRECISION (type
));
1803 return wide_int_to_tree (type
, wi::mask (bits
, false,
1804 TYPE_PRECISION (type
)));
1807 /* Checks that X is integer constant that can be expressed in (unsigned)
1808 HOST_WIDE_INT without loss of precision. */
1811 cst_and_fits_in_hwi (const_tree x
)
1813 return (TREE_CODE (x
) == INTEGER_CST
1814 && (tree_fits_shwi_p (x
) || tree_fits_uhwi_p (x
)));
1817 /* Build a newly constructed VECTOR_CST with the given values of
1818 (VECTOR_CST_)LOG2_NPATTERNS and (VECTOR_CST_)NELTS_PER_PATTERN. */
1821 make_vector (unsigned log2_npatterns
,
1822 unsigned int nelts_per_pattern MEM_STAT_DECL
)
1824 gcc_assert (IN_RANGE (nelts_per_pattern
, 1, 3));
1826 unsigned npatterns
= 1 << log2_npatterns
;
1827 unsigned encoded_nelts
= npatterns
* nelts_per_pattern
;
1828 unsigned length
= (sizeof (struct tree_vector
)
1829 + (encoded_nelts
- 1) * sizeof (tree
));
1831 record_node_allocation_statistics (VECTOR_CST
, length
);
1833 t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
1835 TREE_SET_CODE (t
, VECTOR_CST
);
1836 TREE_CONSTANT (t
) = 1;
1837 VECTOR_CST_LOG2_NPATTERNS (t
) = log2_npatterns
;
1838 VECTOR_CST_NELTS_PER_PATTERN (t
) = nelts_per_pattern
;
1843 /* Return a new VECTOR_CST node whose type is TYPE and whose values
1844 are extracted from V, a vector of CONSTRUCTOR_ELT. */
1847 build_vector_from_ctor (tree type
, vec
<constructor_elt
, va_gc
> *v
)
1849 unsigned HOST_WIDE_INT idx
, nelts
;
1852 /* We can't construct a VECTOR_CST for a variable number of elements. */
1853 nelts
= TYPE_VECTOR_SUBPARTS (type
).to_constant ();
1854 tree_vector_builder
vec (type
, nelts
, 1);
1855 FOR_EACH_CONSTRUCTOR_VALUE (v
, idx
, value
)
1857 if (TREE_CODE (value
) == VECTOR_CST
)
1859 /* If NELTS is constant then this must be too. */
1860 unsigned int sub_nelts
= VECTOR_CST_NELTS (value
).to_constant ();
1861 for (unsigned i
= 0; i
< sub_nelts
; ++i
)
1862 vec
.quick_push (VECTOR_CST_ELT (value
, i
));
1865 vec
.quick_push (value
);
1867 while (vec
.length () < nelts
)
1868 vec
.quick_push (build_zero_cst (TREE_TYPE (type
)));
1870 return vec
.build ();
1873 /* Build a vector of type VECTYPE where all the elements are SCs. */
1875 build_vector_from_val (tree vectype
, tree sc
)
1877 unsigned HOST_WIDE_INT i
, nunits
;
1879 if (sc
== error_mark_node
)
1882 /* Verify that the vector type is suitable for SC. Note that there
1883 is some inconsistency in the type-system with respect to restrict
1884 qualifications of pointers. Vector types always have a main-variant
1885 element type and the qualification is applied to the vector-type.
1886 So TREE_TYPE (vector-type) does not return a properly qualified
1887 vector element-type. */
1888 gcc_checking_assert (types_compatible_p (TYPE_MAIN_VARIANT (TREE_TYPE (sc
)),
1889 TREE_TYPE (vectype
)));
1891 if (CONSTANT_CLASS_P (sc
))
1893 tree_vector_builder
v (vectype
, 1, 1);
1897 else if (!TYPE_VECTOR_SUBPARTS (vectype
).is_constant (&nunits
))
1898 return fold_build1 (VEC_DUPLICATE_EXPR
, vectype
, sc
);
1901 vec
<constructor_elt
, va_gc
> *v
;
1902 vec_alloc (v
, nunits
);
1903 for (i
= 0; i
< nunits
; ++i
)
1904 CONSTRUCTOR_APPEND_ELT (v
, NULL_TREE
, sc
);
1905 return build_constructor (vectype
, v
);
1909 /* If TYPE is not a vector type, just return SC, otherwise return
1910 build_vector_from_val (TYPE, SC). */
1913 build_uniform_cst (tree type
, tree sc
)
1915 if (!VECTOR_TYPE_P (type
))
1918 return build_vector_from_val (type
, sc
);
1921 /* Build a vector series of type TYPE in which element I has the value
1922 BASE + I * STEP. The result is a constant if BASE and STEP are constant
1923 and a VEC_SERIES_EXPR otherwise. */
1926 build_vec_series (tree type
, tree base
, tree step
)
1928 if (integer_zerop (step
))
1929 return build_vector_from_val (type
, base
);
1930 if (TREE_CODE (base
) == INTEGER_CST
&& TREE_CODE (step
) == INTEGER_CST
)
1932 tree_vector_builder
builder (type
, 1, 3);
1933 tree elt1
= wide_int_to_tree (TREE_TYPE (base
),
1934 wi::to_wide (base
) + wi::to_wide (step
));
1935 tree elt2
= wide_int_to_tree (TREE_TYPE (base
),
1936 wi::to_wide (elt1
) + wi::to_wide (step
));
1937 builder
.quick_push (base
);
1938 builder
.quick_push (elt1
);
1939 builder
.quick_push (elt2
);
1940 return builder
.build ();
1942 return build2 (VEC_SERIES_EXPR
, type
, base
, step
);
1945 /* Return a vector with the same number of units and number of bits
1946 as VEC_TYPE, but in which the elements are a linear series of unsigned
1947 integers { BASE, BASE + STEP, BASE + STEP * 2, ... }. */
1950 build_index_vector (tree vec_type
, poly_uint64 base
, poly_uint64 step
)
1952 tree index_vec_type
= vec_type
;
1953 tree index_elt_type
= TREE_TYPE (vec_type
);
1954 poly_uint64 nunits
= TYPE_VECTOR_SUBPARTS (vec_type
);
1955 if (!INTEGRAL_TYPE_P (index_elt_type
) || !TYPE_UNSIGNED (index_elt_type
))
1957 index_elt_type
= build_nonstandard_integer_type
1958 (GET_MODE_BITSIZE (SCALAR_TYPE_MODE (index_elt_type
)), true);
1959 index_vec_type
= build_vector_type (index_elt_type
, nunits
);
1962 tree_vector_builder
v (index_vec_type
, 1, 3);
1963 for (unsigned int i
= 0; i
< 3; ++i
)
1964 v
.quick_push (build_int_cstu (index_elt_type
, base
+ i
* step
));
1968 /* Something has messed with the elements of CONSTRUCTOR C after it was built;
1969 calculate TREE_CONSTANT and TREE_SIDE_EFFECTS. */
1972 recompute_constructor_flags (tree c
)
1976 bool constant_p
= true;
1977 bool side_effects_p
= false;
1978 vec
<constructor_elt
, va_gc
> *vals
= CONSTRUCTOR_ELTS (c
);
1980 FOR_EACH_CONSTRUCTOR_VALUE (vals
, i
, val
)
1982 /* Mostly ctors will have elts that don't have side-effects, so
1983 the usual case is to scan all the elements. Hence a single
1984 loop for both const and side effects, rather than one loop
1985 each (with early outs). */
1986 if (!TREE_CONSTANT (val
))
1988 if (TREE_SIDE_EFFECTS (val
))
1989 side_effects_p
= true;
1992 TREE_SIDE_EFFECTS (c
) = side_effects_p
;
1993 TREE_CONSTANT (c
) = constant_p
;
1996 /* Make sure that TREE_CONSTANT and TREE_SIDE_EFFECTS are correct for
2000 verify_constructor_flags (tree c
)
2004 bool constant_p
= TREE_CONSTANT (c
);
2005 bool side_effects_p
= TREE_SIDE_EFFECTS (c
);
2006 vec
<constructor_elt
, va_gc
> *vals
= CONSTRUCTOR_ELTS (c
);
2008 FOR_EACH_CONSTRUCTOR_VALUE (vals
, i
, val
)
2010 if (constant_p
&& !TREE_CONSTANT (val
))
2011 internal_error ("non-constant element in constant CONSTRUCTOR");
2012 if (!side_effects_p
&& TREE_SIDE_EFFECTS (val
))
2013 internal_error ("side-effects element in no-side-effects CONSTRUCTOR");
2017 /* Return a new CONSTRUCTOR node whose type is TYPE and whose values
2018 are in the vec pointed to by VALS. */
2020 build_constructor (tree type
, vec
<constructor_elt
, va_gc
> *vals
)
2022 tree c
= make_node (CONSTRUCTOR
);
2024 TREE_TYPE (c
) = type
;
2025 CONSTRUCTOR_ELTS (c
) = vals
;
2027 recompute_constructor_flags (c
);
2032 /* Build a CONSTRUCTOR node made of a single initializer, with the specified
2035 build_constructor_single (tree type
, tree index
, tree value
)
2037 vec
<constructor_elt
, va_gc
> *v
;
2038 constructor_elt elt
= {index
, value
};
2041 v
->quick_push (elt
);
2043 return build_constructor (type
, v
);
2047 /* Return a new CONSTRUCTOR node whose type is TYPE and whose values
2048 are in a list pointed to by VALS. */
2050 build_constructor_from_list (tree type
, tree vals
)
2053 vec
<constructor_elt
, va_gc
> *v
= NULL
;
2057 vec_alloc (v
, list_length (vals
));
2058 for (t
= vals
; t
; t
= TREE_CHAIN (t
))
2059 CONSTRUCTOR_APPEND_ELT (v
, TREE_PURPOSE (t
), TREE_VALUE (t
));
2062 return build_constructor (type
, v
);
2065 /* Return a new CONSTRUCTOR node whose type is TYPE. NELTS is the number
2066 of elements, provided as index/value pairs. */
2069 build_constructor_va (tree type
, int nelts
, ...)
2071 vec
<constructor_elt
, va_gc
> *v
= NULL
;
2074 va_start (p
, nelts
);
2075 vec_alloc (v
, nelts
);
2078 tree index
= va_arg (p
, tree
);
2079 tree value
= va_arg (p
, tree
);
2080 CONSTRUCTOR_APPEND_ELT (v
, index
, value
);
2083 return build_constructor (type
, v
);
2086 /* Return a node of type TYPE for which TREE_CLOBBER_P is true. */
2089 build_clobber (tree type
)
2091 tree clobber
= build_constructor (type
, NULL
);
2092 TREE_THIS_VOLATILE (clobber
) = true;
2096 /* Return a new FIXED_CST node whose type is TYPE and value is F. */
2099 build_fixed (tree type
, FIXED_VALUE_TYPE f
)
2102 FIXED_VALUE_TYPE
*fp
;
2104 v
= make_node (FIXED_CST
);
2105 fp
= ggc_alloc
<fixed_value
> ();
2106 memcpy (fp
, &f
, sizeof (FIXED_VALUE_TYPE
));
2108 TREE_TYPE (v
) = type
;
2109 TREE_FIXED_CST_PTR (v
) = fp
;
2113 /* Return a new REAL_CST node whose type is TYPE and value is D. */
2116 build_real (tree type
, REAL_VALUE_TYPE d
)
2119 REAL_VALUE_TYPE
*dp
;
2122 /* ??? Used to check for overflow here via CHECK_FLOAT_TYPE.
2123 Consider doing it via real_convert now. */
2125 v
= make_node (REAL_CST
);
2126 dp
= ggc_alloc
<real_value
> ();
2127 memcpy (dp
, &d
, sizeof (REAL_VALUE_TYPE
));
2129 TREE_TYPE (v
) = type
;
2130 TREE_REAL_CST_PTR (v
) = dp
;
2131 TREE_OVERFLOW (v
) = overflow
;
2135 /* Like build_real, but first truncate D to the type. */
2138 build_real_truncate (tree type
, REAL_VALUE_TYPE d
)
2140 return build_real (type
, real_value_truncate (TYPE_MODE (type
), d
));
2143 /* Return a new REAL_CST node whose type is TYPE
2144 and whose value is the integer value of the INTEGER_CST node I. */
2147 real_value_from_int_cst (const_tree type
, const_tree i
)
2151 /* Clear all bits of the real value type so that we can later do
2152 bitwise comparisons to see if two values are the same. */
2153 memset (&d
, 0, sizeof d
);
2155 real_from_integer (&d
, type
? TYPE_MODE (type
) : VOIDmode
, wi::to_wide (i
),
2156 TYPE_SIGN (TREE_TYPE (i
)));
2160 /* Given a tree representing an integer constant I, return a tree
2161 representing the same value as a floating-point constant of type TYPE. */
2164 build_real_from_int_cst (tree type
, const_tree i
)
2167 int overflow
= TREE_OVERFLOW (i
);
2169 v
= build_real (type
, real_value_from_int_cst (type
, i
));
2171 TREE_OVERFLOW (v
) |= overflow
;
2175 /* Return a newly constructed STRING_CST node whose value is
2176 the LEN characters at STR.
2177 Note that for a C string literal, LEN should include the trailing NUL.
2178 The TREE_TYPE is not initialized. */
2181 build_string (int len
, const char *str
)
2186 /* Do not waste bytes provided by padding of struct tree_string. */
2187 length
= len
+ offsetof (struct tree_string
, str
) + 1;
2189 record_node_allocation_statistics (STRING_CST
, length
);
2191 s
= (tree
) ggc_internal_alloc (length
);
2193 memset (s
, 0, sizeof (struct tree_typed
));
2194 TREE_SET_CODE (s
, STRING_CST
);
2195 TREE_CONSTANT (s
) = 1;
2196 TREE_STRING_LENGTH (s
) = len
;
2197 memcpy (s
->string
.str
, str
, len
);
2198 s
->string
.str
[len
] = '\0';
2203 /* Return a newly constructed COMPLEX_CST node whose value is
2204 specified by the real and imaginary parts REAL and IMAG.
2205 Both REAL and IMAG should be constant nodes. TYPE, if specified,
2206 will be the type of the COMPLEX_CST; otherwise a new type will be made. */
2209 build_complex (tree type
, tree real
, tree imag
)
2211 gcc_assert (CONSTANT_CLASS_P (real
));
2212 gcc_assert (CONSTANT_CLASS_P (imag
));
2214 tree t
= make_node (COMPLEX_CST
);
2216 TREE_REALPART (t
) = real
;
2217 TREE_IMAGPART (t
) = imag
;
2218 TREE_TYPE (t
) = type
? type
: build_complex_type (TREE_TYPE (real
));
2219 TREE_OVERFLOW (t
) = TREE_OVERFLOW (real
) | TREE_OVERFLOW (imag
);
2223 /* Build a complex (inf +- 0i), such as for the result of cproj.
2224 TYPE is the complex tree type of the result. If NEG is true, the
2225 imaginary zero is negative. */
2228 build_complex_inf (tree type
, bool neg
)
2230 REAL_VALUE_TYPE rinf
, rzero
= dconst0
;
2234 return build_complex (type
, build_real (TREE_TYPE (type
), rinf
),
2235 build_real (TREE_TYPE (type
), rzero
));
2238 /* Return the constant 1 in type TYPE. If TYPE has several elements, each
2239 element is set to 1. In particular, this is 1 + i for complex types. */
2242 build_each_one_cst (tree type
)
2244 if (TREE_CODE (type
) == COMPLEX_TYPE
)
2246 tree scalar
= build_one_cst (TREE_TYPE (type
));
2247 return build_complex (type
, scalar
, scalar
);
2250 return build_one_cst (type
);
2253 /* Return a constant of arithmetic type TYPE which is the
2254 multiplicative identity of the set TYPE. */
2257 build_one_cst (tree type
)
2259 switch (TREE_CODE (type
))
2261 case INTEGER_TYPE
: case ENUMERAL_TYPE
: case BOOLEAN_TYPE
:
2262 case POINTER_TYPE
: case REFERENCE_TYPE
:
2264 return build_int_cst (type
, 1);
2267 return build_real (type
, dconst1
);
2269 case FIXED_POINT_TYPE
:
2270 /* We can only generate 1 for accum types. */
2271 gcc_assert (ALL_SCALAR_ACCUM_MODE_P (TYPE_MODE (type
)));
2272 return build_fixed (type
, FCONST1 (TYPE_MODE (type
)));
2276 tree scalar
= build_one_cst (TREE_TYPE (type
));
2278 return build_vector_from_val (type
, scalar
);
2282 return build_complex (type
,
2283 build_one_cst (TREE_TYPE (type
)),
2284 build_zero_cst (TREE_TYPE (type
)));
2291 /* Return an integer of type TYPE containing all 1's in as much precision as
2292 it contains, or a complex or vector whose subparts are such integers. */
2295 build_all_ones_cst (tree type
)
2297 if (TREE_CODE (type
) == COMPLEX_TYPE
)
2299 tree scalar
= build_all_ones_cst (TREE_TYPE (type
));
2300 return build_complex (type
, scalar
, scalar
);
2303 return build_minus_one_cst (type
);
2306 /* Return a constant of arithmetic type TYPE which is the
2307 opposite of the multiplicative identity of the set TYPE. */
2310 build_minus_one_cst (tree type
)
2312 switch (TREE_CODE (type
))
2314 case INTEGER_TYPE
: case ENUMERAL_TYPE
: case BOOLEAN_TYPE
:
2315 case POINTER_TYPE
: case REFERENCE_TYPE
:
2317 return build_int_cst (type
, -1);
2320 return build_real (type
, dconstm1
);
2322 case FIXED_POINT_TYPE
:
2323 /* We can only generate 1 for accum types. */
2324 gcc_assert (ALL_SCALAR_ACCUM_MODE_P (TYPE_MODE (type
)));
2325 return build_fixed (type
,
2326 fixed_from_double_int (double_int_minus_one
,
2327 SCALAR_TYPE_MODE (type
)));
2331 tree scalar
= build_minus_one_cst (TREE_TYPE (type
));
2333 return build_vector_from_val (type
, scalar
);
2337 return build_complex (type
,
2338 build_minus_one_cst (TREE_TYPE (type
)),
2339 build_zero_cst (TREE_TYPE (type
)));
2346 /* Build 0 constant of type TYPE. This is used by constructor folding
2347 and thus the constant should be represented in memory by
2351 build_zero_cst (tree type
)
2353 switch (TREE_CODE (type
))
2355 case INTEGER_TYPE
: case ENUMERAL_TYPE
: case BOOLEAN_TYPE
:
2356 case POINTER_TYPE
: case REFERENCE_TYPE
:
2357 case OFFSET_TYPE
: case NULLPTR_TYPE
:
2358 return build_int_cst (type
, 0);
2361 return build_real (type
, dconst0
);
2363 case FIXED_POINT_TYPE
:
2364 return build_fixed (type
, FCONST0 (TYPE_MODE (type
)));
2368 tree scalar
= build_zero_cst (TREE_TYPE (type
));
2370 return build_vector_from_val (type
, scalar
);
2375 tree zero
= build_zero_cst (TREE_TYPE (type
));
2377 return build_complex (type
, zero
, zero
);
2381 if (!AGGREGATE_TYPE_P (type
))
2382 return fold_convert (type
, integer_zero_node
);
2383 return build_constructor (type
, NULL
);
2388 /* Build a BINFO with LEN language slots. */
2391 make_tree_binfo (unsigned base_binfos MEM_STAT_DECL
)
2394 size_t length
= (offsetof (struct tree_binfo
, base_binfos
)
2395 + vec
<tree
, va_gc
>::embedded_size (base_binfos
));
2397 record_node_allocation_statistics (TREE_BINFO
, length
);
2399 t
= ggc_alloc_tree_node_stat (length PASS_MEM_STAT
);
2401 memset (t
, 0, offsetof (struct tree_binfo
, base_binfos
));
2403 TREE_SET_CODE (t
, TREE_BINFO
);
2405 BINFO_BASE_BINFOS (t
)->embedded_init (base_binfos
);
2410 /* Create a CASE_LABEL_EXPR tree node and return it. */
2413 build_case_label (tree low_value
, tree high_value
, tree label_decl
)
2415 tree t
= make_node (CASE_LABEL_EXPR
);
2417 TREE_TYPE (t
) = void_type_node
;
2418 SET_EXPR_LOCATION (t
, DECL_SOURCE_LOCATION (label_decl
));
2420 CASE_LOW (t
) = low_value
;
2421 CASE_HIGH (t
) = high_value
;
2422 CASE_LABEL (t
) = label_decl
;
2423 CASE_CHAIN (t
) = NULL_TREE
;
2428 /* Build a newly constructed INTEGER_CST node. LEN and EXT_LEN are the
2429 values of TREE_INT_CST_NUNITS and TREE_INT_CST_EXT_NUNITS respectively.
2430 The latter determines the length of the HOST_WIDE_INT vector. */
2433 make_int_cst (int len
, int ext_len MEM_STAT_DECL
)
2436 int length
= ((ext_len
- 1) * sizeof (HOST_WIDE_INT
)
2437 + sizeof (struct tree_int_cst
));
2440 record_node_allocation_statistics (INTEGER_CST
, length
);
2442 t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
2444 TREE_SET_CODE (t
, INTEGER_CST
);
2445 TREE_INT_CST_NUNITS (t
) = len
;
2446 TREE_INT_CST_EXT_NUNITS (t
) = ext_len
;
2447 /* to_offset can only be applied to trees that are offset_int-sized
2448 or smaller. EXT_LEN is correct if it fits, otherwise the constant
2449 must be exactly the precision of offset_int and so LEN is correct. */
2450 if (ext_len
<= OFFSET_INT_ELTS
)
2451 TREE_INT_CST_OFFSET_NUNITS (t
) = ext_len
;
2453 TREE_INT_CST_OFFSET_NUNITS (t
) = len
;
2455 TREE_CONSTANT (t
) = 1;
2460 /* Build a newly constructed TREE_VEC node of length LEN. */
2463 make_tree_vec (int len MEM_STAT_DECL
)
2466 size_t length
= (len
- 1) * sizeof (tree
) + sizeof (struct tree_vec
);
2468 record_node_allocation_statistics (TREE_VEC
, length
);
2470 t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
2472 TREE_SET_CODE (t
, TREE_VEC
);
2473 TREE_VEC_LENGTH (t
) = len
;
2478 /* Grow a TREE_VEC node to new length LEN. */
2481 grow_tree_vec (tree v
, int len MEM_STAT_DECL
)
2483 gcc_assert (TREE_CODE (v
) == TREE_VEC
);
2485 int oldlen
= TREE_VEC_LENGTH (v
);
2486 gcc_assert (len
> oldlen
);
2488 size_t oldlength
= (oldlen
- 1) * sizeof (tree
) + sizeof (struct tree_vec
);
2489 size_t length
= (len
- 1) * sizeof (tree
) + sizeof (struct tree_vec
);
2491 record_node_allocation_statistics (TREE_VEC
, length
- oldlength
);
2493 v
= (tree
) ggc_realloc (v
, length PASS_MEM_STAT
);
2495 TREE_VEC_LENGTH (v
) = len
;
2500 /* Return 1 if EXPR is the constant zero, whether it is integral, float or
2501 fixed, and scalar, complex or vector. */
2504 zerop (const_tree expr
)
2506 return (integer_zerop (expr
)
2507 || real_zerop (expr
)
2508 || fixed_zerop (expr
));
2511 /* Return 1 if EXPR is the integer constant zero or a complex constant
2512 of zero, or a location wrapper for such a constant. */
2515 integer_zerop (const_tree expr
)
2517 STRIP_ANY_LOCATION_WRAPPER (expr
);
2519 switch (TREE_CODE (expr
))
2522 return wi::to_wide (expr
) == 0;
2524 return (integer_zerop (TREE_REALPART (expr
))
2525 && integer_zerop (TREE_IMAGPART (expr
)));
2527 return (VECTOR_CST_NPATTERNS (expr
) == 1
2528 && VECTOR_CST_DUPLICATE_P (expr
)
2529 && integer_zerop (VECTOR_CST_ENCODED_ELT (expr
, 0)));
2535 /* Return 1 if EXPR is the integer constant one or the corresponding
2536 complex constant, or a location wrapper for such a constant. */
2539 integer_onep (const_tree expr
)
2541 STRIP_ANY_LOCATION_WRAPPER (expr
);
2543 switch (TREE_CODE (expr
))
2546 return wi::eq_p (wi::to_widest (expr
), 1);
2548 return (integer_onep (TREE_REALPART (expr
))
2549 && integer_zerop (TREE_IMAGPART (expr
)));
2551 return (VECTOR_CST_NPATTERNS (expr
) == 1
2552 && VECTOR_CST_DUPLICATE_P (expr
)
2553 && integer_onep (VECTOR_CST_ENCODED_ELT (expr
, 0)));
2559 /* Return 1 if EXPR is the integer constant one. For complex and vector,
2560 return 1 if every piece is the integer constant one.
2561 Also return 1 for location wrappers for such a constant. */
2564 integer_each_onep (const_tree expr
)
2566 STRIP_ANY_LOCATION_WRAPPER (expr
);
2568 if (TREE_CODE (expr
) == COMPLEX_CST
)
2569 return (integer_onep (TREE_REALPART (expr
))
2570 && integer_onep (TREE_IMAGPART (expr
)));
2572 return integer_onep (expr
);
2575 /* Return 1 if EXPR is an integer containing all 1's in as much precision as
2576 it contains, or a complex or vector whose subparts are such integers,
2577 or a location wrapper for such a constant. */
2580 integer_all_onesp (const_tree expr
)
2582 STRIP_ANY_LOCATION_WRAPPER (expr
);
2584 if (TREE_CODE (expr
) == COMPLEX_CST
2585 && integer_all_onesp (TREE_REALPART (expr
))
2586 && integer_all_onesp (TREE_IMAGPART (expr
)))
2589 else if (TREE_CODE (expr
) == VECTOR_CST
)
2590 return (VECTOR_CST_NPATTERNS (expr
) == 1
2591 && VECTOR_CST_DUPLICATE_P (expr
)
2592 && integer_all_onesp (VECTOR_CST_ENCODED_ELT (expr
, 0)));
2594 else if (TREE_CODE (expr
) != INTEGER_CST
)
2597 return (wi::max_value (TYPE_PRECISION (TREE_TYPE (expr
)), UNSIGNED
)
2598 == wi::to_wide (expr
));
2601 /* Return 1 if EXPR is the integer constant minus one, or a location wrapper
2602 for such a constant. */
2605 integer_minus_onep (const_tree expr
)
2607 STRIP_ANY_LOCATION_WRAPPER (expr
);
2609 if (TREE_CODE (expr
) == COMPLEX_CST
)
2610 return (integer_all_onesp (TREE_REALPART (expr
))
2611 && integer_zerop (TREE_IMAGPART (expr
)));
2613 return integer_all_onesp (expr
);
2616 /* Return 1 if EXPR is an integer constant that is a power of 2 (i.e., has only
2617 one bit on), or a location wrapper for such a constant. */
2620 integer_pow2p (const_tree expr
)
2622 STRIP_ANY_LOCATION_WRAPPER (expr
);
2624 if (TREE_CODE (expr
) == COMPLEX_CST
2625 && integer_pow2p (TREE_REALPART (expr
))
2626 && integer_zerop (TREE_IMAGPART (expr
)))
2629 if (TREE_CODE (expr
) != INTEGER_CST
)
2632 return wi::popcount (wi::to_wide (expr
)) == 1;
2635 /* Return 1 if EXPR is an integer constant other than zero or a
2636 complex constant other than zero, or a location wrapper for such a
2640 integer_nonzerop (const_tree expr
)
2642 STRIP_ANY_LOCATION_WRAPPER (expr
);
2644 return ((TREE_CODE (expr
) == INTEGER_CST
2645 && wi::to_wide (expr
) != 0)
2646 || (TREE_CODE (expr
) == COMPLEX_CST
2647 && (integer_nonzerop (TREE_REALPART (expr
))
2648 || integer_nonzerop (TREE_IMAGPART (expr
)))));
2651 /* Return 1 if EXPR is the integer constant one. For vector,
2652 return 1 if every piece is the integer constant minus one
2653 (representing the value TRUE).
2654 Also return 1 for location wrappers for such a constant. */
2657 integer_truep (const_tree expr
)
2659 STRIP_ANY_LOCATION_WRAPPER (expr
);
2661 if (TREE_CODE (expr
) == VECTOR_CST
)
2662 return integer_all_onesp (expr
);
2663 return integer_onep (expr
);
2666 /* Return 1 if EXPR is the fixed-point constant zero, or a location wrapper
2667 for such a constant. */
2670 fixed_zerop (const_tree expr
)
2672 STRIP_ANY_LOCATION_WRAPPER (expr
);
2674 return (TREE_CODE (expr
) == FIXED_CST
2675 && TREE_FIXED_CST (expr
).data
.is_zero ());
2678 /* Return the power of two represented by a tree node known to be a
2682 tree_log2 (const_tree expr
)
2684 if (TREE_CODE (expr
) == COMPLEX_CST
)
2685 return tree_log2 (TREE_REALPART (expr
));
2687 return wi::exact_log2 (wi::to_wide (expr
));
2690 /* Similar, but return the largest integer Y such that 2 ** Y is less
2691 than or equal to EXPR. */
2694 tree_floor_log2 (const_tree expr
)
2696 if (TREE_CODE (expr
) == COMPLEX_CST
)
2697 return tree_log2 (TREE_REALPART (expr
));
2699 return wi::floor_log2 (wi::to_wide (expr
));
2702 /* Return number of known trailing zero bits in EXPR, or, if the value of
2703 EXPR is known to be zero, the precision of it's type. */
2706 tree_ctz (const_tree expr
)
2708 if (!INTEGRAL_TYPE_P (TREE_TYPE (expr
))
2709 && !POINTER_TYPE_P (TREE_TYPE (expr
)))
2712 unsigned int ret1
, ret2
, prec
= TYPE_PRECISION (TREE_TYPE (expr
));
2713 switch (TREE_CODE (expr
))
2716 ret1
= wi::ctz (wi::to_wide (expr
));
2717 return MIN (ret1
, prec
);
2719 ret1
= wi::ctz (get_nonzero_bits (expr
));
2720 return MIN (ret1
, prec
);
2727 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2730 ret2
= tree_ctz (TREE_OPERAND (expr
, 1));
2731 return MIN (ret1
, ret2
);
2732 case POINTER_PLUS_EXPR
:
2733 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2734 ret2
= tree_ctz (TREE_OPERAND (expr
, 1));
2735 /* Second operand is sizetype, which could be in theory
2736 wider than pointer's precision. Make sure we never
2737 return more than prec. */
2738 ret2
= MIN (ret2
, prec
);
2739 return MIN (ret1
, ret2
);
2741 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2742 ret2
= tree_ctz (TREE_OPERAND (expr
, 1));
2743 return MAX (ret1
, ret2
);
2745 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2746 ret2
= tree_ctz (TREE_OPERAND (expr
, 1));
2747 return MIN (ret1
+ ret2
, prec
);
2749 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2750 if (tree_fits_uhwi_p (TREE_OPERAND (expr
, 1))
2751 && (tree_to_uhwi (TREE_OPERAND (expr
, 1)) < prec
))
2753 ret2
= tree_to_uhwi (TREE_OPERAND (expr
, 1));
2754 return MIN (ret1
+ ret2
, prec
);
2758 if (tree_fits_uhwi_p (TREE_OPERAND (expr
, 1))
2759 && (tree_to_uhwi (TREE_OPERAND (expr
, 1)) < prec
))
2761 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2762 ret2
= tree_to_uhwi (TREE_OPERAND (expr
, 1));
2767 case TRUNC_DIV_EXPR
:
2769 case FLOOR_DIV_EXPR
:
2770 case ROUND_DIV_EXPR
:
2771 case EXACT_DIV_EXPR
:
2772 if (TREE_CODE (TREE_OPERAND (expr
, 1)) == INTEGER_CST
2773 && tree_int_cst_sgn (TREE_OPERAND (expr
, 1)) == 1)
2775 int l
= tree_log2 (TREE_OPERAND (expr
, 1));
2778 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2786 ret1
= tree_ctz (TREE_OPERAND (expr
, 0));
2787 if (ret1
&& ret1
== TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (expr
, 0))))
2789 return MIN (ret1
, prec
);
2791 return tree_ctz (TREE_OPERAND (expr
, 0));
2793 ret1
= tree_ctz (TREE_OPERAND (expr
, 1));
2796 ret2
= tree_ctz (TREE_OPERAND (expr
, 2));
2797 return MIN (ret1
, ret2
);
2799 return tree_ctz (TREE_OPERAND (expr
, 1));
2801 ret1
= get_pointer_alignment (CONST_CAST_TREE (expr
));
2802 if (ret1
> BITS_PER_UNIT
)
2804 ret1
= ctz_hwi (ret1
/ BITS_PER_UNIT
);
2805 return MIN (ret1
, prec
);
2813 /* Return 1 if EXPR is the real constant zero. Trailing zeroes matter for
2814 decimal float constants, so don't return 1 for them.
2815 Also return 1 for location wrappers around such a constant. */
2818 real_zerop (const_tree expr
)
2820 STRIP_ANY_LOCATION_WRAPPER (expr
);
2822 switch (TREE_CODE (expr
))
2825 return real_equal (&TREE_REAL_CST (expr
), &dconst0
)
2826 && !(DECIMAL_FLOAT_MODE_P (TYPE_MODE (TREE_TYPE (expr
))));
2828 return real_zerop (TREE_REALPART (expr
))
2829 && real_zerop (TREE_IMAGPART (expr
));
2832 /* Don't simply check for a duplicate because the predicate
2833 accepts both +0.0 and -0.0. */
2834 unsigned count
= vector_cst_encoded_nelts (expr
);
2835 for (unsigned int i
= 0; i
< count
; ++i
)
2836 if (!real_zerop (VECTOR_CST_ENCODED_ELT (expr
, i
)))
2845 /* Return 1 if EXPR is the real constant one in real or complex form.
2846 Trailing zeroes matter for decimal float constants, so don't return
2848 Also return 1 for location wrappers around such a constant. */
2851 real_onep (const_tree expr
)
2853 STRIP_ANY_LOCATION_WRAPPER (expr
);
2855 switch (TREE_CODE (expr
))
2858 return real_equal (&TREE_REAL_CST (expr
), &dconst1
)
2859 && !(DECIMAL_FLOAT_MODE_P (TYPE_MODE (TREE_TYPE (expr
))));
2861 return real_onep (TREE_REALPART (expr
))
2862 && real_zerop (TREE_IMAGPART (expr
));
2864 return (VECTOR_CST_NPATTERNS (expr
) == 1
2865 && VECTOR_CST_DUPLICATE_P (expr
)
2866 && real_onep (VECTOR_CST_ENCODED_ELT (expr
, 0)));
2872 /* Return 1 if EXPR is the real constant minus one. Trailing zeroes
2873 matter for decimal float constants, so don't return 1 for them.
2874 Also return 1 for location wrappers around such a constant. */
2877 real_minus_onep (const_tree expr
)
2879 STRIP_ANY_LOCATION_WRAPPER (expr
);
2881 switch (TREE_CODE (expr
))
2884 return real_equal (&TREE_REAL_CST (expr
), &dconstm1
)
2885 && !(DECIMAL_FLOAT_MODE_P (TYPE_MODE (TREE_TYPE (expr
))));
2887 return real_minus_onep (TREE_REALPART (expr
))
2888 && real_zerop (TREE_IMAGPART (expr
));
2890 return (VECTOR_CST_NPATTERNS (expr
) == 1
2891 && VECTOR_CST_DUPLICATE_P (expr
)
2892 && real_minus_onep (VECTOR_CST_ENCODED_ELT (expr
, 0)));
2898 /* Nonzero if EXP is a constant or a cast of a constant. */
2901 really_constant_p (const_tree exp
)
2903 /* This is not quite the same as STRIP_NOPS. It does more. */
2904 while (CONVERT_EXPR_P (exp
)
2905 || TREE_CODE (exp
) == NON_LVALUE_EXPR
)
2906 exp
= TREE_OPERAND (exp
, 0);
2907 return TREE_CONSTANT (exp
);
2910 /* Return true if T holds a polynomial pointer difference, storing it in
2911 *VALUE if so. A true return means that T's precision is no greater
2912 than 64 bits, which is the largest address space we support, so *VALUE
2913 never loses precision. However, the signedness of the result does
2914 not necessarily match the signedness of T: sometimes an unsigned type
2915 like sizetype is used to encode a value that is actually negative. */
2918 ptrdiff_tree_p (const_tree t
, poly_int64_pod
*value
)
2922 if (TREE_CODE (t
) == INTEGER_CST
)
2924 if (!cst_and_fits_in_hwi (t
))
2926 *value
= int_cst_value (t
);
2929 if (POLY_INT_CST_P (t
))
2931 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2932 if (!cst_and_fits_in_hwi (POLY_INT_CST_COEFF (t
, i
)))
2934 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
2935 value
->coeffs
[i
] = int_cst_value (POLY_INT_CST_COEFF (t
, i
));
2942 tree_to_poly_int64 (const_tree t
)
2944 gcc_assert (tree_fits_poly_int64_p (t
));
2945 if (POLY_INT_CST_P (t
))
2946 return poly_int_cst_value (t
).force_shwi ();
2947 return TREE_INT_CST_LOW (t
);
2951 tree_to_poly_uint64 (const_tree t
)
2953 gcc_assert (tree_fits_poly_uint64_p (t
));
2954 if (POLY_INT_CST_P (t
))
2955 return poly_int_cst_value (t
).force_uhwi ();
2956 return TREE_INT_CST_LOW (t
);
2959 /* Return first list element whose TREE_VALUE is ELEM.
2960 Return 0 if ELEM is not in LIST. */
2963 value_member (tree elem
, tree list
)
2967 if (elem
== TREE_VALUE (list
))
2969 list
= TREE_CHAIN (list
);
2974 /* Return first list element whose TREE_PURPOSE is ELEM.
2975 Return 0 if ELEM is not in LIST. */
2978 purpose_member (const_tree elem
, tree list
)
2982 if (elem
== TREE_PURPOSE (list
))
2984 list
= TREE_CHAIN (list
);
2989 /* Return true if ELEM is in V. */
2992 vec_member (const_tree elem
, vec
<tree
, va_gc
> *v
)
2996 FOR_EACH_VEC_SAFE_ELT (v
, ix
, t
)
3002 /* Returns element number IDX (zero-origin) of chain CHAIN, or
3006 chain_index (int idx
, tree chain
)
3008 for (; chain
&& idx
> 0; --idx
)
3009 chain
= TREE_CHAIN (chain
);
3013 /* Return nonzero if ELEM is part of the chain CHAIN. */
3016 chain_member (const_tree elem
, const_tree chain
)
3022 chain
= DECL_CHAIN (chain
);
3028 /* Return the length of a chain of nodes chained through TREE_CHAIN.
3029 We expect a null pointer to mark the end of the chain.
3030 This is the Lisp primitive `length'. */
3033 list_length (const_tree t
)
3036 #ifdef ENABLE_TREE_CHECKING
3044 #ifdef ENABLE_TREE_CHECKING
3047 gcc_assert (p
!= q
);
3055 /* Returns the first FIELD_DECL in the TYPE_FIELDS of the RECORD_TYPE or
3056 UNION_TYPE TYPE, or NULL_TREE if none. */
3059 first_field (const_tree type
)
3061 tree t
= TYPE_FIELDS (type
);
3062 while (t
&& TREE_CODE (t
) != FIELD_DECL
)
3067 /* Concatenate two chains of nodes (chained through TREE_CHAIN)
3068 by modifying the last node in chain 1 to point to chain 2.
3069 This is the Lisp primitive `nconc'. */
3072 chainon (tree op1
, tree op2
)
3081 for (t1
= op1
; TREE_CHAIN (t1
); t1
= TREE_CHAIN (t1
))
3083 TREE_CHAIN (t1
) = op2
;
3085 #ifdef ENABLE_TREE_CHECKING
3088 for (t2
= op2
; t2
; t2
= TREE_CHAIN (t2
))
3089 gcc_assert (t2
!= t1
);
3096 /* Return the last node in a chain of nodes (chained through TREE_CHAIN). */
3099 tree_last (tree chain
)
3103 while ((next
= TREE_CHAIN (chain
)))
3108 /* Reverse the order of elements in the chain T,
3109 and return the new head of the chain (old last element). */
3114 tree prev
= 0, decl
, next
;
3115 for (decl
= t
; decl
; decl
= next
)
3117 /* We shouldn't be using this function to reverse BLOCK chains; we
3118 have blocks_nreverse for that. */
3119 gcc_checking_assert (TREE_CODE (decl
) != BLOCK
);
3120 next
= TREE_CHAIN (decl
);
3121 TREE_CHAIN (decl
) = prev
;
3127 /* Return a newly created TREE_LIST node whose
3128 purpose and value fields are PARM and VALUE. */
3131 build_tree_list (tree parm
, tree value MEM_STAT_DECL
)
3133 tree t
= make_node (TREE_LIST PASS_MEM_STAT
);
3134 TREE_PURPOSE (t
) = parm
;
3135 TREE_VALUE (t
) = value
;
3139 /* Build a chain of TREE_LIST nodes from a vector. */
3142 build_tree_list_vec (const vec
<tree
, va_gc
> *vec MEM_STAT_DECL
)
3144 tree ret
= NULL_TREE
;
3148 FOR_EACH_VEC_SAFE_ELT (vec
, i
, t
)
3150 *pp
= build_tree_list (NULL
, t PASS_MEM_STAT
);
3151 pp
= &TREE_CHAIN (*pp
);
3156 /* Return a newly created TREE_LIST node whose
3157 purpose and value fields are PURPOSE and VALUE
3158 and whose TREE_CHAIN is CHAIN. */
3161 tree_cons (tree purpose
, tree value
, tree chain MEM_STAT_DECL
)
3165 node
= ggc_alloc_tree_node_stat (sizeof (struct tree_list
) PASS_MEM_STAT
);
3166 memset (node
, 0, sizeof (struct tree_common
));
3168 record_node_allocation_statistics (TREE_LIST
, sizeof (struct tree_list
));
3170 TREE_SET_CODE (node
, TREE_LIST
);
3171 TREE_CHAIN (node
) = chain
;
3172 TREE_PURPOSE (node
) = purpose
;
3173 TREE_VALUE (node
) = value
;
3177 /* Return the values of the elements of a CONSTRUCTOR as a vector of
3181 ctor_to_vec (tree ctor
)
3183 vec
<tree
, va_gc
> *vec
;
3184 vec_alloc (vec
, CONSTRUCTOR_NELTS (ctor
));
3188 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (ctor
), ix
, val
)
3189 vec
->quick_push (val
);
3194 /* Return the size nominally occupied by an object of type TYPE
3195 when it resides in memory. The value is measured in units of bytes,
3196 and its data type is that normally used for type sizes
3197 (which is the first type created by make_signed_type or
3198 make_unsigned_type). */
3201 size_in_bytes_loc (location_t loc
, const_tree type
)
3205 if (type
== error_mark_node
)
3206 return integer_zero_node
;
3208 type
= TYPE_MAIN_VARIANT (type
);
3209 t
= TYPE_SIZE_UNIT (type
);
3213 lang_hooks
.types
.incomplete_type_error (loc
, NULL_TREE
, type
);
3214 return size_zero_node
;
3220 /* Return the size of TYPE (in bytes) as a wide integer
3221 or return -1 if the size can vary or is larger than an integer. */
3224 int_size_in_bytes (const_tree type
)
3228 if (type
== error_mark_node
)
3231 type
= TYPE_MAIN_VARIANT (type
);
3232 t
= TYPE_SIZE_UNIT (type
);
3234 if (t
&& tree_fits_uhwi_p (t
))
3235 return TREE_INT_CST_LOW (t
);
3240 /* Return the maximum size of TYPE (in bytes) as a wide integer
3241 or return -1 if the size can vary or is larger than an integer. */
3244 max_int_size_in_bytes (const_tree type
)
3246 HOST_WIDE_INT size
= -1;
3249 /* If this is an array type, check for a possible MAX_SIZE attached. */
3251 if (TREE_CODE (type
) == ARRAY_TYPE
)
3253 size_tree
= TYPE_ARRAY_MAX_SIZE (type
);
3255 if (size_tree
&& tree_fits_uhwi_p (size_tree
))
3256 size
= tree_to_uhwi (size_tree
);
3259 /* If we still haven't been able to get a size, see if the language
3260 can compute a maximum size. */
3264 size_tree
= lang_hooks
.types
.max_size (type
);
3266 if (size_tree
&& tree_fits_uhwi_p (size_tree
))
3267 size
= tree_to_uhwi (size_tree
);
3273 /* Return the bit position of FIELD, in bits from the start of the record.
3274 This is a tree of type bitsizetype. */
3277 bit_position (const_tree field
)
3279 return bit_from_pos (DECL_FIELD_OFFSET (field
),
3280 DECL_FIELD_BIT_OFFSET (field
));
3283 /* Return the byte position of FIELD, in bytes from the start of the record.
3284 This is a tree of type sizetype. */
3287 byte_position (const_tree field
)
3289 return byte_from_pos (DECL_FIELD_OFFSET (field
),
3290 DECL_FIELD_BIT_OFFSET (field
));
3293 /* Likewise, but return as an integer. It must be representable in
3294 that way (since it could be a signed value, we don't have the
3295 option of returning -1 like int_size_in_byte can. */
3298 int_byte_position (const_tree field
)
3300 return tree_to_shwi (byte_position (field
));
3303 /* Return the strictest alignment, in bits, that T is known to have. */
3306 expr_align (const_tree t
)
3308 unsigned int align0
, align1
;
3310 switch (TREE_CODE (t
))
3312 CASE_CONVERT
: case NON_LVALUE_EXPR
:
3313 /* If we have conversions, we know that the alignment of the
3314 object must meet each of the alignments of the types. */
3315 align0
= expr_align (TREE_OPERAND (t
, 0));
3316 align1
= TYPE_ALIGN (TREE_TYPE (t
));
3317 return MAX (align0
, align1
);
3319 case SAVE_EXPR
: case COMPOUND_EXPR
: case MODIFY_EXPR
:
3320 case INIT_EXPR
: case TARGET_EXPR
: case WITH_CLEANUP_EXPR
:
3321 case CLEANUP_POINT_EXPR
:
3322 /* These don't change the alignment of an object. */
3323 return expr_align (TREE_OPERAND (t
, 0));
3326 /* The best we can do is say that the alignment is the least aligned
3328 align0
= expr_align (TREE_OPERAND (t
, 1));
3329 align1
= expr_align (TREE_OPERAND (t
, 2));
3330 return MIN (align0
, align1
);
3332 /* FIXME: LABEL_DECL and CONST_DECL never have DECL_ALIGN set
3333 meaningfully, it's always 1. */
3334 case LABEL_DECL
: case CONST_DECL
:
3335 case VAR_DECL
: case PARM_DECL
: case RESULT_DECL
:
3337 gcc_assert (DECL_ALIGN (t
) != 0);
3338 return DECL_ALIGN (t
);
3344 /* Otherwise take the alignment from that of the type. */
3345 return TYPE_ALIGN (TREE_TYPE (t
));
3348 /* Return, as a tree node, the number of elements for TYPE (which is an
3349 ARRAY_TYPE) minus one. This counts only elements of the top array. */
3352 array_type_nelts (const_tree type
)
3354 tree index_type
, min
, max
;
3356 /* If they did it with unspecified bounds, then we should have already
3357 given an error about it before we got here. */
3358 if (! TYPE_DOMAIN (type
))
3359 return error_mark_node
;
3361 index_type
= TYPE_DOMAIN (type
);
3362 min
= TYPE_MIN_VALUE (index_type
);
3363 max
= TYPE_MAX_VALUE (index_type
);
3365 /* TYPE_MAX_VALUE may not be set if the array has unknown length. */
3367 return error_mark_node
;
3369 return (integer_zerop (min
)
3371 : fold_build2 (MINUS_EXPR
, TREE_TYPE (max
), max
, min
));
3374 /* If arg is static -- a reference to an object in static storage -- then
3375 return the object. This is not the same as the C meaning of `static'.
3376 If arg isn't static, return NULL. */
3381 switch (TREE_CODE (arg
))
3384 /* Nested functions are static, even though taking their address will
3385 involve a trampoline as we unnest the nested function and create
3386 the trampoline on the tree level. */
3390 return ((TREE_STATIC (arg
) || DECL_EXTERNAL (arg
))
3391 && ! DECL_THREAD_LOCAL_P (arg
)
3392 && ! DECL_DLLIMPORT_P (arg
)
3396 return ((TREE_STATIC (arg
) || DECL_EXTERNAL (arg
))
3400 return TREE_STATIC (arg
) ? arg
: NULL
;
3407 /* If the thing being referenced is not a field, then it is
3408 something language specific. */
3409 gcc_assert (TREE_CODE (TREE_OPERAND (arg
, 1)) == FIELD_DECL
);
3411 /* If we are referencing a bitfield, we can't evaluate an
3412 ADDR_EXPR at compile time and so it isn't a constant. */
3413 if (DECL_BIT_FIELD (TREE_OPERAND (arg
, 1)))
3416 return staticp (TREE_OPERAND (arg
, 0));
3422 return TREE_CONSTANT (TREE_OPERAND (arg
, 0)) ? arg
: NULL
;
3425 case ARRAY_RANGE_REF
:
3426 if (TREE_CODE (TYPE_SIZE (TREE_TYPE (arg
))) == INTEGER_CST
3427 && TREE_CODE (TREE_OPERAND (arg
, 1)) == INTEGER_CST
)
3428 return staticp (TREE_OPERAND (arg
, 0));
3432 case COMPOUND_LITERAL_EXPR
:
3433 return TREE_STATIC (COMPOUND_LITERAL_EXPR_DECL (arg
)) ? arg
: NULL
;
3443 /* Return whether OP is a DECL whose address is function-invariant. */
3446 decl_address_invariant_p (const_tree op
)
3448 /* The conditions below are slightly less strict than the one in
3451 switch (TREE_CODE (op
))
3460 if ((TREE_STATIC (op
) || DECL_EXTERNAL (op
))
3461 || DECL_THREAD_LOCAL_P (op
)
3462 || DECL_CONTEXT (op
) == current_function_decl
3463 || decl_function_context (op
) == current_function_decl
)
3468 if ((TREE_STATIC (op
) || DECL_EXTERNAL (op
))
3469 || decl_function_context (op
) == current_function_decl
)
3480 /* Return whether OP is a DECL whose address is interprocedural-invariant. */
3483 decl_address_ip_invariant_p (const_tree op
)
3485 /* The conditions below are slightly less strict than the one in
3488 switch (TREE_CODE (op
))
3496 if (((TREE_STATIC (op
) || DECL_EXTERNAL (op
))
3497 && !DECL_DLLIMPORT_P (op
))
3498 || DECL_THREAD_LOCAL_P (op
))
3503 if ((TREE_STATIC (op
) || DECL_EXTERNAL (op
)))
3515 /* Return true if T is function-invariant (internal function, does
3516 not handle arithmetic; that's handled in skip_simple_arithmetic and
3517 tree_invariant_p). */
3520 tree_invariant_p_1 (tree t
)
3524 if (TREE_CONSTANT (t
)
3525 || (TREE_READONLY (t
) && !TREE_SIDE_EFFECTS (t
)))
3528 switch (TREE_CODE (t
))
3534 op
= TREE_OPERAND (t
, 0);
3535 while (handled_component_p (op
))
3537 switch (TREE_CODE (op
))
3540 case ARRAY_RANGE_REF
:
3541 if (!tree_invariant_p (TREE_OPERAND (op
, 1))
3542 || TREE_OPERAND (op
, 2) != NULL_TREE
3543 || TREE_OPERAND (op
, 3) != NULL_TREE
)
3548 if (TREE_OPERAND (op
, 2) != NULL_TREE
)
3554 op
= TREE_OPERAND (op
, 0);
3557 return CONSTANT_CLASS_P (op
) || decl_address_invariant_p (op
);
3566 /* Return true if T is function-invariant. */
3569 tree_invariant_p (tree t
)
3571 tree inner
= skip_simple_arithmetic (t
);
3572 return tree_invariant_p_1 (inner
);
3575 /* Wrap a SAVE_EXPR around EXPR, if appropriate.
3576 Do this to any expression which may be used in more than one place,
3577 but must be evaluated only once.
3579 Normally, expand_expr would reevaluate the expression each time.
3580 Calling save_expr produces something that is evaluated and recorded
3581 the first time expand_expr is called on it. Subsequent calls to
3582 expand_expr just reuse the recorded value.
3584 The call to expand_expr that generates code that actually computes
3585 the value is the first call *at compile time*. Subsequent calls
3586 *at compile time* generate code to use the saved value.
3587 This produces correct result provided that *at run time* control
3588 always flows through the insns made by the first expand_expr
3589 before reaching the other places where the save_expr was evaluated.
3590 You, the caller of save_expr, must make sure this is so.
3592 Constants, and certain read-only nodes, are returned with no
3593 SAVE_EXPR because that is safe. Expressions containing placeholders
3594 are not touched; see tree.def for an explanation of what these
3598 save_expr (tree expr
)
3602 /* If the tree evaluates to a constant, then we don't want to hide that
3603 fact (i.e. this allows further folding, and direct checks for constants).
3604 However, a read-only object that has side effects cannot be bypassed.
3605 Since it is no problem to reevaluate literals, we just return the
3607 inner
= skip_simple_arithmetic (expr
);
3608 if (TREE_CODE (inner
) == ERROR_MARK
)
3611 if (tree_invariant_p_1 (inner
))
3614 /* If INNER contains a PLACEHOLDER_EXPR, we must evaluate it each time, since
3615 it means that the size or offset of some field of an object depends on
3616 the value within another field.
3618 Note that it must not be the case that EXPR contains both a PLACEHOLDER_EXPR
3619 and some variable since it would then need to be both evaluated once and
3620 evaluated more than once. Front-ends must assure this case cannot
3621 happen by surrounding any such subexpressions in their own SAVE_EXPR
3622 and forcing evaluation at the proper time. */
3623 if (contains_placeholder_p (inner
))
3626 expr
= build1_loc (EXPR_LOCATION (expr
), SAVE_EXPR
, TREE_TYPE (expr
), expr
);
3628 /* This expression might be placed ahead of a jump to ensure that the
3629 value was computed on both sides of the jump. So make sure it isn't
3630 eliminated as dead. */
3631 TREE_SIDE_EFFECTS (expr
) = 1;
3635 /* Look inside EXPR into any simple arithmetic operations. Return the
3636 outermost non-arithmetic or non-invariant node. */
3639 skip_simple_arithmetic (tree expr
)
3641 /* We don't care about whether this can be used as an lvalue in this
3643 while (TREE_CODE (expr
) == NON_LVALUE_EXPR
)
3644 expr
= TREE_OPERAND (expr
, 0);
3646 /* If we have simple operations applied to a SAVE_EXPR or to a SAVE_EXPR and
3647 a constant, it will be more efficient to not make another SAVE_EXPR since
3648 it will allow better simplification and GCSE will be able to merge the
3649 computations if they actually occur. */
3652 if (UNARY_CLASS_P (expr
))
3653 expr
= TREE_OPERAND (expr
, 0);
3654 else if (BINARY_CLASS_P (expr
))
3656 if (tree_invariant_p (TREE_OPERAND (expr
, 1)))
3657 expr
= TREE_OPERAND (expr
, 0);
3658 else if (tree_invariant_p (TREE_OPERAND (expr
, 0)))
3659 expr
= TREE_OPERAND (expr
, 1);
3670 /* Look inside EXPR into simple arithmetic operations involving constants.
3671 Return the outermost non-arithmetic or non-constant node. */
3674 skip_simple_constant_arithmetic (tree expr
)
3676 while (TREE_CODE (expr
) == NON_LVALUE_EXPR
)
3677 expr
= TREE_OPERAND (expr
, 0);
3681 if (UNARY_CLASS_P (expr
))
3682 expr
= TREE_OPERAND (expr
, 0);
3683 else if (BINARY_CLASS_P (expr
))
3685 if (TREE_CONSTANT (TREE_OPERAND (expr
, 1)))
3686 expr
= TREE_OPERAND (expr
, 0);
3687 else if (TREE_CONSTANT (TREE_OPERAND (expr
, 0)))
3688 expr
= TREE_OPERAND (expr
, 1);
3699 /* Return which tree structure is used by T. */
3701 enum tree_node_structure_enum
3702 tree_node_structure (const_tree t
)
3704 const enum tree_code code
= TREE_CODE (t
);
3705 return tree_node_structure_for_code (code
);
3708 /* Set various status flags when building a CALL_EXPR object T. */
3711 process_call_operands (tree t
)
3713 bool side_effects
= TREE_SIDE_EFFECTS (t
);
3714 bool read_only
= false;
3715 int i
= call_expr_flags (t
);
3717 /* Calls have side-effects, except those to const or pure functions. */
3718 if ((i
& ECF_LOOPING_CONST_OR_PURE
) || !(i
& (ECF_CONST
| ECF_PURE
)))
3719 side_effects
= true;
3720 /* Propagate TREE_READONLY of arguments for const functions. */
3724 if (!side_effects
|| read_only
)
3725 for (i
= 1; i
< TREE_OPERAND_LENGTH (t
); i
++)
3727 tree op
= TREE_OPERAND (t
, i
);
3728 if (op
&& TREE_SIDE_EFFECTS (op
))
3729 side_effects
= true;
3730 if (op
&& !TREE_READONLY (op
) && !CONSTANT_CLASS_P (op
))
3734 TREE_SIDE_EFFECTS (t
) = side_effects
;
3735 TREE_READONLY (t
) = read_only
;
3738 /* Return true if EXP contains a PLACEHOLDER_EXPR, i.e. if it represents a
3739 size or offset that depends on a field within a record. */
3742 contains_placeholder_p (const_tree exp
)
3744 enum tree_code code
;
3749 code
= TREE_CODE (exp
);
3750 if (code
== PLACEHOLDER_EXPR
)
3753 switch (TREE_CODE_CLASS (code
))
3756 /* Don't look at any PLACEHOLDER_EXPRs that might be in index or bit
3757 position computations since they will be converted into a
3758 WITH_RECORD_EXPR involving the reference, which will assume
3759 here will be valid. */
3760 return CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 0));
3762 case tcc_exceptional
:
3763 if (code
== TREE_LIST
)
3764 return (CONTAINS_PLACEHOLDER_P (TREE_VALUE (exp
))
3765 || CONTAINS_PLACEHOLDER_P (TREE_CHAIN (exp
)));
3770 case tcc_comparison
:
3771 case tcc_expression
:
3775 /* Ignoring the first operand isn't quite right, but works best. */
3776 return CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 1));
3779 return (CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 0))
3780 || CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 1))
3781 || CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 2)));
3784 /* The save_expr function never wraps anything containing
3785 a PLACEHOLDER_EXPR. */
3792 switch (TREE_CODE_LENGTH (code
))
3795 return CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 0));
3797 return (CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 0))
3798 || CONTAINS_PLACEHOLDER_P (TREE_OPERAND (exp
, 1)));
3809 const_call_expr_arg_iterator iter
;
3810 FOR_EACH_CONST_CALL_EXPR_ARG (arg
, iter
, exp
)
3811 if (CONTAINS_PLACEHOLDER_P (arg
))
3825 /* Return true if any part of the structure of TYPE involves a PLACEHOLDER_EXPR
3826 directly. This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and
3830 type_contains_placeholder_1 (const_tree type
)
3832 /* If the size contains a placeholder or the parent type (component type in
3833 the case of arrays) type involves a placeholder, this type does. */
3834 if (CONTAINS_PLACEHOLDER_P (TYPE_SIZE (type
))
3835 || CONTAINS_PLACEHOLDER_P (TYPE_SIZE_UNIT (type
))
3836 || (!POINTER_TYPE_P (type
)
3838 && type_contains_placeholder_p (TREE_TYPE (type
))))
3841 /* Now do type-specific checks. Note that the last part of the check above
3842 greatly limits what we have to do below. */
3843 switch (TREE_CODE (type
))
3851 case REFERENCE_TYPE
:
3860 case FIXED_POINT_TYPE
:
3861 /* Here we just check the bounds. */
3862 return (CONTAINS_PLACEHOLDER_P (TYPE_MIN_VALUE (type
))
3863 || CONTAINS_PLACEHOLDER_P (TYPE_MAX_VALUE (type
)));
3866 /* We have already checked the component type above, so just check
3867 the domain type. Flexible array members have a null domain. */
3868 return TYPE_DOMAIN (type
) ?
3869 type_contains_placeholder_p (TYPE_DOMAIN (type
)) : false;
3873 case QUAL_UNION_TYPE
:
3877 for (field
= TYPE_FIELDS (type
); field
; field
= DECL_CHAIN (field
))
3878 if (TREE_CODE (field
) == FIELD_DECL
3879 && (CONTAINS_PLACEHOLDER_P (DECL_FIELD_OFFSET (field
))
3880 || (TREE_CODE (type
) == QUAL_UNION_TYPE
3881 && CONTAINS_PLACEHOLDER_P (DECL_QUALIFIER (field
)))
3882 || type_contains_placeholder_p (TREE_TYPE (field
))))
3893 /* Wrapper around above function used to cache its result. */
3896 type_contains_placeholder_p (tree type
)
3900 /* If the contains_placeholder_bits field has been initialized,
3901 then we know the answer. */
3902 if (TYPE_CONTAINS_PLACEHOLDER_INTERNAL (type
) > 0)
3903 return TYPE_CONTAINS_PLACEHOLDER_INTERNAL (type
) - 1;
3905 /* Indicate that we've seen this type node, and the answer is false.
3906 This is what we want to return if we run into recursion via fields. */
3907 TYPE_CONTAINS_PLACEHOLDER_INTERNAL (type
) = 1;
3909 /* Compute the real value. */
3910 result
= type_contains_placeholder_1 (type
);
3912 /* Store the real value. */
3913 TYPE_CONTAINS_PLACEHOLDER_INTERNAL (type
) = result
+ 1;
3918 /* Push tree EXP onto vector QUEUE if it is not already present. */
3921 push_without_duplicates (tree exp
, vec
<tree
> *queue
)
3926 FOR_EACH_VEC_ELT (*queue
, i
, iter
)
3927 if (simple_cst_equal (iter
, exp
) == 1)
3931 queue
->safe_push (exp
);
3934 /* Given a tree EXP, find all occurrences of references to fields
3935 in a PLACEHOLDER_EXPR and place them in vector REFS without
3936 duplicates. Also record VAR_DECLs and CONST_DECLs. Note that
3937 we assume here that EXP contains only arithmetic expressions
3938 or CALL_EXPRs with PLACEHOLDER_EXPRs occurring only in their
3942 find_placeholder_in_expr (tree exp
, vec
<tree
> *refs
)
3944 enum tree_code code
= TREE_CODE (exp
);
3948 /* We handle TREE_LIST and COMPONENT_REF separately. */
3949 if (code
== TREE_LIST
)
3951 FIND_PLACEHOLDER_IN_EXPR (TREE_CHAIN (exp
), refs
);
3952 FIND_PLACEHOLDER_IN_EXPR (TREE_VALUE (exp
), refs
);
3954 else if (code
== COMPONENT_REF
)
3956 for (inner
= TREE_OPERAND (exp
, 0);
3957 REFERENCE_CLASS_P (inner
);
3958 inner
= TREE_OPERAND (inner
, 0))
3961 if (TREE_CODE (inner
) == PLACEHOLDER_EXPR
)
3962 push_without_duplicates (exp
, refs
);
3964 FIND_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 0), refs
);
3967 switch (TREE_CODE_CLASS (code
))
3972 case tcc_declaration
:
3973 /* Variables allocated to static storage can stay. */
3974 if (!TREE_STATIC (exp
))
3975 push_without_duplicates (exp
, refs
);
3978 case tcc_expression
:
3979 /* This is the pattern built in ada/make_aligning_type. */
3980 if (code
== ADDR_EXPR
3981 && TREE_CODE (TREE_OPERAND (exp
, 0)) == PLACEHOLDER_EXPR
)
3983 push_without_duplicates (exp
, refs
);
3989 case tcc_exceptional
:
3992 case tcc_comparison
:
3994 for (i
= 0; i
< TREE_CODE_LENGTH (code
); i
++)
3995 FIND_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, i
), refs
);
3999 for (i
= 1; i
< TREE_OPERAND_LENGTH (exp
); i
++)
4000 FIND_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, i
), refs
);
4008 /* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
4009 return a tree with all occurrences of references to F in a
4010 PLACEHOLDER_EXPR replaced by R. Also handle VAR_DECLs and
4011 CONST_DECLs. Note that we assume here that EXP contains only
4012 arithmetic expressions or CALL_EXPRs with PLACEHOLDER_EXPRs
4013 occurring only in their argument list. */
4016 substitute_in_expr (tree exp
, tree f
, tree r
)
4018 enum tree_code code
= TREE_CODE (exp
);
4019 tree op0
, op1
, op2
, op3
;
4022 /* We handle TREE_LIST and COMPONENT_REF separately. */
4023 if (code
== TREE_LIST
)
4025 op0
= SUBSTITUTE_IN_EXPR (TREE_CHAIN (exp
), f
, r
);
4026 op1
= SUBSTITUTE_IN_EXPR (TREE_VALUE (exp
), f
, r
);
4027 if (op0
== TREE_CHAIN (exp
) && op1
== TREE_VALUE (exp
))
4030 return tree_cons (TREE_PURPOSE (exp
), op1
, op0
);
4032 else if (code
== COMPONENT_REF
)
4036 /* If this expression is getting a value from a PLACEHOLDER_EXPR
4037 and it is the right field, replace it with R. */
4038 for (inner
= TREE_OPERAND (exp
, 0);
4039 REFERENCE_CLASS_P (inner
);
4040 inner
= TREE_OPERAND (inner
, 0))
4044 op1
= TREE_OPERAND (exp
, 1);
4046 if (TREE_CODE (inner
) == PLACEHOLDER_EXPR
&& op1
== f
)
4049 /* If this expression hasn't been completed let, leave it alone. */
4050 if (TREE_CODE (inner
) == PLACEHOLDER_EXPR
&& !TREE_TYPE (inner
))
4053 op0
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 0), f
, r
);
4054 if (op0
== TREE_OPERAND (exp
, 0))
4058 = fold_build3 (COMPONENT_REF
, TREE_TYPE (exp
), op0
, op1
, NULL_TREE
);
4061 switch (TREE_CODE_CLASS (code
))
4066 case tcc_declaration
:
4072 case tcc_expression
:
4078 case tcc_exceptional
:
4081 case tcc_comparison
:
4083 switch (TREE_CODE_LENGTH (code
))
4089 op0
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 0), f
, r
);
4090 if (op0
== TREE_OPERAND (exp
, 0))
4093 new_tree
= fold_build1 (code
, TREE_TYPE (exp
), op0
);
4097 op0
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 0), f
, r
);
4098 op1
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 1), f
, r
);
4100 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1))
4103 new_tree
= fold_build2 (code
, TREE_TYPE (exp
), op0
, op1
);
4107 op0
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 0), f
, r
);
4108 op1
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 1), f
, r
);
4109 op2
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 2), f
, r
);
4111 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1)
4112 && op2
== TREE_OPERAND (exp
, 2))
4115 new_tree
= fold_build3 (code
, TREE_TYPE (exp
), op0
, op1
, op2
);
4119 op0
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 0), f
, r
);
4120 op1
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 1), f
, r
);
4121 op2
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 2), f
, r
);
4122 op3
= SUBSTITUTE_IN_EXPR (TREE_OPERAND (exp
, 3), f
, r
);
4124 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1)
4125 && op2
== TREE_OPERAND (exp
, 2)
4126 && op3
== TREE_OPERAND (exp
, 3))
4130 = fold (build4 (code
, TREE_TYPE (exp
), op0
, op1
, op2
, op3
));
4142 new_tree
= NULL_TREE
;
4144 /* If we are trying to replace F with a constant or with another
4145 instance of one of the arguments of the call, inline back
4146 functions which do nothing else than computing a value from
4147 the arguments they are passed. This makes it possible to
4148 fold partially or entirely the replacement expression. */
4149 if (code
== CALL_EXPR
)
4151 bool maybe_inline
= false;
4152 if (CONSTANT_CLASS_P (r
))
4153 maybe_inline
= true;
4155 for (i
= 3; i
< TREE_OPERAND_LENGTH (exp
); i
++)
4156 if (operand_equal_p (TREE_OPERAND (exp
, i
), r
, 0))
4158 maybe_inline
= true;
4163 tree t
= maybe_inline_call_in_expr (exp
);
4165 return SUBSTITUTE_IN_EXPR (t
, f
, r
);
4169 for (i
= 1; i
< TREE_OPERAND_LENGTH (exp
); i
++)
4171 tree op
= TREE_OPERAND (exp
, i
);
4172 tree new_op
= SUBSTITUTE_IN_EXPR (op
, f
, r
);
4176 new_tree
= copy_node (exp
);
4177 TREE_OPERAND (new_tree
, i
) = new_op
;
4183 new_tree
= fold (new_tree
);
4184 if (TREE_CODE (new_tree
) == CALL_EXPR
)
4185 process_call_operands (new_tree
);
4196 TREE_READONLY (new_tree
) |= TREE_READONLY (exp
);
4198 if (code
== INDIRECT_REF
|| code
== ARRAY_REF
|| code
== ARRAY_RANGE_REF
)
4199 TREE_THIS_NOTRAP (new_tree
) |= TREE_THIS_NOTRAP (exp
);
4204 /* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
4205 for it within OBJ, a tree that is an object or a chain of references. */
4208 substitute_placeholder_in_expr (tree exp
, tree obj
)
4210 enum tree_code code
= TREE_CODE (exp
);
4211 tree op0
, op1
, op2
, op3
;
4214 /* If this is a PLACEHOLDER_EXPR, see if we find a corresponding type
4215 in the chain of OBJ. */
4216 if (code
== PLACEHOLDER_EXPR
)
4218 tree need_type
= TYPE_MAIN_VARIANT (TREE_TYPE (exp
));
4221 for (elt
= obj
; elt
!= 0;
4222 elt
= ((TREE_CODE (elt
) == COMPOUND_EXPR
4223 || TREE_CODE (elt
) == COND_EXPR
)
4224 ? TREE_OPERAND (elt
, 1)
4225 : (REFERENCE_CLASS_P (elt
)
4226 || UNARY_CLASS_P (elt
)
4227 || BINARY_CLASS_P (elt
)
4228 || VL_EXP_CLASS_P (elt
)
4229 || EXPRESSION_CLASS_P (elt
))
4230 ? TREE_OPERAND (elt
, 0) : 0))
4231 if (TYPE_MAIN_VARIANT (TREE_TYPE (elt
)) == need_type
)
4234 for (elt
= obj
; elt
!= 0;
4235 elt
= ((TREE_CODE (elt
) == COMPOUND_EXPR
4236 || TREE_CODE (elt
) == COND_EXPR
)
4237 ? TREE_OPERAND (elt
, 1)
4238 : (REFERENCE_CLASS_P (elt
)
4239 || UNARY_CLASS_P (elt
)
4240 || BINARY_CLASS_P (elt
)
4241 || VL_EXP_CLASS_P (elt
)
4242 || EXPRESSION_CLASS_P (elt
))
4243 ? TREE_OPERAND (elt
, 0) : 0))
4244 if (POINTER_TYPE_P (TREE_TYPE (elt
))
4245 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (elt
)))
4247 return fold_build1 (INDIRECT_REF
, need_type
, elt
);
4249 /* If we didn't find it, return the original PLACEHOLDER_EXPR. If it
4250 survives until RTL generation, there will be an error. */
4254 /* TREE_LIST is special because we need to look at TREE_VALUE
4255 and TREE_CHAIN, not TREE_OPERANDS. */
4256 else if (code
== TREE_LIST
)
4258 op0
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_CHAIN (exp
), obj
);
4259 op1
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_VALUE (exp
), obj
);
4260 if (op0
== TREE_CHAIN (exp
) && op1
== TREE_VALUE (exp
))
4263 return tree_cons (TREE_PURPOSE (exp
), op1
, op0
);
4266 switch (TREE_CODE_CLASS (code
))
4269 case tcc_declaration
:
4272 case tcc_exceptional
:
4275 case tcc_comparison
:
4276 case tcc_expression
:
4279 switch (TREE_CODE_LENGTH (code
))
4285 op0
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 0), obj
);
4286 if (op0
== TREE_OPERAND (exp
, 0))
4289 new_tree
= fold_build1 (code
, TREE_TYPE (exp
), op0
);
4293 op0
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 0), obj
);
4294 op1
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 1), obj
);
4296 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1))
4299 new_tree
= fold_build2 (code
, TREE_TYPE (exp
), op0
, op1
);
4303 op0
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 0), obj
);
4304 op1
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 1), obj
);
4305 op2
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 2), obj
);
4307 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1)
4308 && op2
== TREE_OPERAND (exp
, 2))
4311 new_tree
= fold_build3 (code
, TREE_TYPE (exp
), op0
, op1
, op2
);
4315 op0
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 0), obj
);
4316 op1
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 1), obj
);
4317 op2
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 2), obj
);
4318 op3
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (TREE_OPERAND (exp
, 3), obj
);
4320 if (op0
== TREE_OPERAND (exp
, 0) && op1
== TREE_OPERAND (exp
, 1)
4321 && op2
== TREE_OPERAND (exp
, 2)
4322 && op3
== TREE_OPERAND (exp
, 3))
4326 = fold (build4 (code
, TREE_TYPE (exp
), op0
, op1
, op2
, op3
));
4338 new_tree
= NULL_TREE
;
4340 for (i
= 1; i
< TREE_OPERAND_LENGTH (exp
); i
++)
4342 tree op
= TREE_OPERAND (exp
, i
);
4343 tree new_op
= SUBSTITUTE_PLACEHOLDER_IN_EXPR (op
, obj
);
4347 new_tree
= copy_node (exp
);
4348 TREE_OPERAND (new_tree
, i
) = new_op
;
4354 new_tree
= fold (new_tree
);
4355 if (TREE_CODE (new_tree
) == CALL_EXPR
)
4356 process_call_operands (new_tree
);
4367 TREE_READONLY (new_tree
) |= TREE_READONLY (exp
);
4369 if (code
== INDIRECT_REF
|| code
== ARRAY_REF
|| code
== ARRAY_RANGE_REF
)
4370 TREE_THIS_NOTRAP (new_tree
) |= TREE_THIS_NOTRAP (exp
);
4376 /* Subroutine of stabilize_reference; this is called for subtrees of
4377 references. Any expression with side-effects must be put in a SAVE_EXPR
4378 to ensure that it is only evaluated once.
4380 We don't put SAVE_EXPR nodes around everything, because assigning very
4381 simple expressions to temporaries causes us to miss good opportunities
4382 for optimizations. Among other things, the opportunity to fold in the
4383 addition of a constant into an addressing mode often gets lost, e.g.
4384 "y[i+1] += x;". In general, we take the approach that we should not make
4385 an assignment unless we are forced into it - i.e., that any non-side effect
4386 operator should be allowed, and that cse should take care of coalescing
4387 multiple utterances of the same expression should that prove fruitful. */
4390 stabilize_reference_1 (tree e
)
4393 enum tree_code code
= TREE_CODE (e
);
4395 /* We cannot ignore const expressions because it might be a reference
4396 to a const array but whose index contains side-effects. But we can
4397 ignore things that are actual constant or that already have been
4398 handled by this function. */
4400 if (tree_invariant_p (e
))
4403 switch (TREE_CODE_CLASS (code
))
4405 case tcc_exceptional
:
4406 /* Always wrap STATEMENT_LIST into SAVE_EXPR, even if it doesn't
4407 have side-effects. */
4408 if (code
== STATEMENT_LIST
)
4409 return save_expr (e
);
4412 case tcc_declaration
:
4413 case tcc_comparison
:
4415 case tcc_expression
:
4418 /* If the expression has side-effects, then encase it in a SAVE_EXPR
4419 so that it will only be evaluated once. */
4420 /* The reference (r) and comparison (<) classes could be handled as
4421 below, but it is generally faster to only evaluate them once. */
4422 if (TREE_SIDE_EFFECTS (e
))
4423 return save_expr (e
);
4427 /* Constants need no processing. In fact, we should never reach
4432 /* Division is slow and tends to be compiled with jumps,
4433 especially the division by powers of 2 that is often
4434 found inside of an array reference. So do it just once. */
4435 if (code
== TRUNC_DIV_EXPR
|| code
== TRUNC_MOD_EXPR
4436 || code
== FLOOR_DIV_EXPR
|| code
== FLOOR_MOD_EXPR
4437 || code
== CEIL_DIV_EXPR
|| code
== CEIL_MOD_EXPR
4438 || code
== ROUND_DIV_EXPR
|| code
== ROUND_MOD_EXPR
)
4439 return save_expr (e
);
4440 /* Recursively stabilize each operand. */
4441 result
= build_nt (code
, stabilize_reference_1 (TREE_OPERAND (e
, 0)),
4442 stabilize_reference_1 (TREE_OPERAND (e
, 1)));
4446 /* Recursively stabilize each operand. */
4447 result
= build_nt (code
, stabilize_reference_1 (TREE_OPERAND (e
, 0)));
4454 TREE_TYPE (result
) = TREE_TYPE (e
);
4455 TREE_READONLY (result
) = TREE_READONLY (e
);
4456 TREE_SIDE_EFFECTS (result
) = TREE_SIDE_EFFECTS (e
);
4457 TREE_THIS_VOLATILE (result
) = TREE_THIS_VOLATILE (e
);
4462 /* Stabilize a reference so that we can use it any number of times
4463 without causing its operands to be evaluated more than once.
4464 Returns the stabilized reference. This works by means of save_expr,
4465 so see the caveats in the comments about save_expr.
4467 Also allows conversion expressions whose operands are references.
4468 Any other kind of expression is returned unchanged. */
4471 stabilize_reference (tree ref
)
4474 enum tree_code code
= TREE_CODE (ref
);
4481 /* No action is needed in this case. */
4486 case FIX_TRUNC_EXPR
:
4487 result
= build_nt (code
, stabilize_reference (TREE_OPERAND (ref
, 0)));
4491 result
= build_nt (INDIRECT_REF
,
4492 stabilize_reference_1 (TREE_OPERAND (ref
, 0)));
4496 result
= build_nt (COMPONENT_REF
,
4497 stabilize_reference (TREE_OPERAND (ref
, 0)),
4498 TREE_OPERAND (ref
, 1), NULL_TREE
);
4502 result
= build_nt (BIT_FIELD_REF
,
4503 stabilize_reference (TREE_OPERAND (ref
, 0)),
4504 TREE_OPERAND (ref
, 1), TREE_OPERAND (ref
, 2));
4505 REF_REVERSE_STORAGE_ORDER (result
) = REF_REVERSE_STORAGE_ORDER (ref
);
4509 result
= build_nt (ARRAY_REF
,
4510 stabilize_reference (TREE_OPERAND (ref
, 0)),
4511 stabilize_reference_1 (TREE_OPERAND (ref
, 1)),
4512 TREE_OPERAND (ref
, 2), TREE_OPERAND (ref
, 3));
4515 case ARRAY_RANGE_REF
:
4516 result
= build_nt (ARRAY_RANGE_REF
,
4517 stabilize_reference (TREE_OPERAND (ref
, 0)),
4518 stabilize_reference_1 (TREE_OPERAND (ref
, 1)),
4519 TREE_OPERAND (ref
, 2), TREE_OPERAND (ref
, 3));
4523 /* We cannot wrap the first expression in a SAVE_EXPR, as then
4524 it wouldn't be ignored. This matters when dealing with
4526 return stabilize_reference_1 (ref
);
4528 /* If arg isn't a kind of lvalue we recognize, make no change.
4529 Caller should recognize the error for an invalid lvalue. */
4534 return error_mark_node
;
4537 TREE_TYPE (result
) = TREE_TYPE (ref
);
4538 TREE_READONLY (result
) = TREE_READONLY (ref
);
4539 TREE_SIDE_EFFECTS (result
) = TREE_SIDE_EFFECTS (ref
);
4540 TREE_THIS_VOLATILE (result
) = TREE_THIS_VOLATILE (ref
);
4545 /* Low-level constructors for expressions. */
4547 /* A helper function for build1 and constant folders. Set TREE_CONSTANT,
4548 and TREE_SIDE_EFFECTS for an ADDR_EXPR. */
4551 recompute_tree_invariant_for_addr_expr (tree t
)
4554 bool tc
= true, se
= false;
4556 gcc_assert (TREE_CODE (t
) == ADDR_EXPR
);
4558 /* We started out assuming this address is both invariant and constant, but
4559 does not have side effects. Now go down any handled components and see if
4560 any of them involve offsets that are either non-constant or non-invariant.
4561 Also check for side-effects.
4563 ??? Note that this code makes no attempt to deal with the case where
4564 taking the address of something causes a copy due to misalignment. */
4566 #define UPDATE_FLAGS(NODE) \
4567 do { tree _node = (NODE); \
4568 if (_node && !TREE_CONSTANT (_node)) tc = false; \
4569 if (_node && TREE_SIDE_EFFECTS (_node)) se = true; } while (0)
4571 for (node
= TREE_OPERAND (t
, 0); handled_component_p (node
);
4572 node
= TREE_OPERAND (node
, 0))
4574 /* If the first operand doesn't have an ARRAY_TYPE, this is a bogus
4575 array reference (probably made temporarily by the G++ front end),
4576 so ignore all the operands. */
4577 if ((TREE_CODE (node
) == ARRAY_REF
4578 || TREE_CODE (node
) == ARRAY_RANGE_REF
)
4579 && TREE_CODE (TREE_TYPE (TREE_OPERAND (node
, 0))) == ARRAY_TYPE
)
4581 UPDATE_FLAGS (TREE_OPERAND (node
, 1));
4582 if (TREE_OPERAND (node
, 2))
4583 UPDATE_FLAGS (TREE_OPERAND (node
, 2));
4584 if (TREE_OPERAND (node
, 3))
4585 UPDATE_FLAGS (TREE_OPERAND (node
, 3));
4587 /* Likewise, just because this is a COMPONENT_REF doesn't mean we have a
4588 FIELD_DECL, apparently. The G++ front end can put something else
4589 there, at least temporarily. */
4590 else if (TREE_CODE (node
) == COMPONENT_REF
4591 && TREE_CODE (TREE_OPERAND (node
, 1)) == FIELD_DECL
)
4593 if (TREE_OPERAND (node
, 2))
4594 UPDATE_FLAGS (TREE_OPERAND (node
, 2));
4598 node
= lang_hooks
.expr_to_decl (node
, &tc
, &se
);
4600 /* Now see what's inside. If it's an INDIRECT_REF, copy our properties from
4601 the address, since &(*a)->b is a form of addition. If it's a constant, the
4602 address is constant too. If it's a decl, its address is constant if the
4603 decl is static. Everything else is not constant and, furthermore,
4604 taking the address of a volatile variable is not volatile. */
4605 if (TREE_CODE (node
) == INDIRECT_REF
4606 || TREE_CODE (node
) == MEM_REF
)
4607 UPDATE_FLAGS (TREE_OPERAND (node
, 0));
4608 else if (CONSTANT_CLASS_P (node
))
4610 else if (DECL_P (node
))
4611 tc
&= (staticp (node
) != NULL_TREE
);
4615 se
|= TREE_SIDE_EFFECTS (node
);
4619 TREE_CONSTANT (t
) = tc
;
4620 TREE_SIDE_EFFECTS (t
) = se
;
4624 /* Build an expression of code CODE, data type TYPE, and operands as
4625 specified. Expressions and reference nodes can be created this way.
4626 Constants, decls, types and misc nodes cannot be.
4628 We define 5 non-variadic functions, from 0 to 4 arguments. This is
4629 enough for all extant tree codes. */
4632 build0 (enum tree_code code
, tree tt MEM_STAT_DECL
)
4636 gcc_assert (TREE_CODE_LENGTH (code
) == 0);
4638 t
= make_node (code PASS_MEM_STAT
);
4645 build1 (enum tree_code code
, tree type
, tree node MEM_STAT_DECL
)
4647 int length
= sizeof (struct tree_exp
);
4650 record_node_allocation_statistics (code
, length
);
4652 gcc_assert (TREE_CODE_LENGTH (code
) == 1);
4654 t
= ggc_alloc_tree_node_stat (length PASS_MEM_STAT
);
4656 memset (t
, 0, sizeof (struct tree_common
));
4658 TREE_SET_CODE (t
, code
);
4660 TREE_TYPE (t
) = type
;
4661 SET_EXPR_LOCATION (t
, UNKNOWN_LOCATION
);
4662 TREE_OPERAND (t
, 0) = node
;
4663 if (node
&& !TYPE_P (node
))
4665 TREE_SIDE_EFFECTS (t
) = TREE_SIDE_EFFECTS (node
);
4666 TREE_READONLY (t
) = TREE_READONLY (node
);
4669 if (TREE_CODE_CLASS (code
) == tcc_statement
)
4671 if (code
!= DEBUG_BEGIN_STMT
)
4672 TREE_SIDE_EFFECTS (t
) = 1;
4677 /* All of these have side-effects, no matter what their
4679 TREE_SIDE_EFFECTS (t
) = 1;
4680 TREE_READONLY (t
) = 0;
4684 /* Whether a dereference is readonly has nothing to do with whether
4685 its operand is readonly. */
4686 TREE_READONLY (t
) = 0;
4691 recompute_tree_invariant_for_addr_expr (t
);
4695 if ((TREE_CODE_CLASS (code
) == tcc_unary
|| code
== VIEW_CONVERT_EXPR
)
4696 && node
&& !TYPE_P (node
)
4697 && TREE_CONSTANT (node
))
4698 TREE_CONSTANT (t
) = 1;
4699 if (TREE_CODE_CLASS (code
) == tcc_reference
4700 && node
&& TREE_THIS_VOLATILE (node
))
4701 TREE_THIS_VOLATILE (t
) = 1;
4708 #define PROCESS_ARG(N) \
4710 TREE_OPERAND (t, N) = arg##N; \
4711 if (arg##N &&!TYPE_P (arg##N)) \
4713 if (TREE_SIDE_EFFECTS (arg##N)) \
4715 if (!TREE_READONLY (arg##N) \
4716 && !CONSTANT_CLASS_P (arg##N)) \
4717 (void) (read_only = 0); \
4718 if (!TREE_CONSTANT (arg##N)) \
4719 (void) (constant = 0); \
4724 build2 (enum tree_code code
, tree tt
, tree arg0
, tree arg1 MEM_STAT_DECL
)
4726 bool constant
, read_only
, side_effects
, div_by_zero
;
4729 gcc_assert (TREE_CODE_LENGTH (code
) == 2);
4731 if ((code
== MINUS_EXPR
|| code
== PLUS_EXPR
|| code
== MULT_EXPR
)
4732 && arg0
&& arg1
&& tt
&& POINTER_TYPE_P (tt
)
4733 /* When sizetype precision doesn't match that of pointers
4734 we need to be able to build explicit extensions or truncations
4735 of the offset argument. */
4736 && TYPE_PRECISION (sizetype
) == TYPE_PRECISION (tt
))
4737 gcc_assert (TREE_CODE (arg0
) == INTEGER_CST
4738 && TREE_CODE (arg1
) == INTEGER_CST
);
4740 if (code
== POINTER_PLUS_EXPR
&& arg0
&& arg1
&& tt
)
4741 gcc_assert (POINTER_TYPE_P (tt
) && POINTER_TYPE_P (TREE_TYPE (arg0
))
4742 && ptrofftype_p (TREE_TYPE (arg1
)));
4744 t
= make_node (code PASS_MEM_STAT
);
4747 /* Below, we automatically set TREE_SIDE_EFFECTS and TREE_READONLY for the
4748 result based on those same flags for the arguments. But if the
4749 arguments aren't really even `tree' expressions, we shouldn't be trying
4752 /* Expressions without side effects may be constant if their
4753 arguments are as well. */
4754 constant
= (TREE_CODE_CLASS (code
) == tcc_comparison
4755 || TREE_CODE_CLASS (code
) == tcc_binary
);
4757 side_effects
= TREE_SIDE_EFFECTS (t
);
4761 case TRUNC_DIV_EXPR
:
4763 case FLOOR_DIV_EXPR
:
4764 case ROUND_DIV_EXPR
:
4765 case EXACT_DIV_EXPR
:
4767 case FLOOR_MOD_EXPR
:
4768 case ROUND_MOD_EXPR
:
4769 case TRUNC_MOD_EXPR
:
4770 div_by_zero
= integer_zerop (arg1
);
4773 div_by_zero
= false;
4779 TREE_SIDE_EFFECTS (t
) = side_effects
;
4780 if (code
== MEM_REF
)
4782 if (arg0
&& TREE_CODE (arg0
) == ADDR_EXPR
)
4784 tree o
= TREE_OPERAND (arg0
, 0);
4785 TREE_READONLY (t
) = TREE_READONLY (o
);
4786 TREE_THIS_VOLATILE (t
) = TREE_THIS_VOLATILE (o
);
4791 TREE_READONLY (t
) = read_only
;
4792 /* Don't mark X / 0 as constant. */
4793 TREE_CONSTANT (t
) = constant
&& !div_by_zero
;
4794 TREE_THIS_VOLATILE (t
)
4795 = (TREE_CODE_CLASS (code
) == tcc_reference
4796 && arg0
&& TREE_THIS_VOLATILE (arg0
));
4804 build3 (enum tree_code code
, tree tt
, tree arg0
, tree arg1
,
4805 tree arg2 MEM_STAT_DECL
)
4807 bool constant
, read_only
, side_effects
;
4810 gcc_assert (TREE_CODE_LENGTH (code
) == 3);
4811 gcc_assert (TREE_CODE_CLASS (code
) != tcc_vl_exp
);
4813 t
= make_node (code PASS_MEM_STAT
);
4818 /* As a special exception, if COND_EXPR has NULL branches, we
4819 assume that it is a gimple statement and always consider
4820 it to have side effects. */
4821 if (code
== COND_EXPR
4822 && tt
== void_type_node
4823 && arg1
== NULL_TREE
4824 && arg2
== NULL_TREE
)
4825 side_effects
= true;
4827 side_effects
= TREE_SIDE_EFFECTS (t
);
4833 if (code
== COND_EXPR
)
4834 TREE_READONLY (t
) = read_only
;
4836 TREE_SIDE_EFFECTS (t
) = side_effects
;
4837 TREE_THIS_VOLATILE (t
)
4838 = (TREE_CODE_CLASS (code
) == tcc_reference
4839 && arg0
&& TREE_THIS_VOLATILE (arg0
));
4845 build4 (enum tree_code code
, tree tt
, tree arg0
, tree arg1
,
4846 tree arg2
, tree arg3 MEM_STAT_DECL
)
4848 bool constant
, read_only
, side_effects
;
4851 gcc_assert (TREE_CODE_LENGTH (code
) == 4);
4853 t
= make_node (code PASS_MEM_STAT
);
4856 side_effects
= TREE_SIDE_EFFECTS (t
);
4863 TREE_SIDE_EFFECTS (t
) = side_effects
;
4864 TREE_THIS_VOLATILE (t
)
4865 = (TREE_CODE_CLASS (code
) == tcc_reference
4866 && arg0
&& TREE_THIS_VOLATILE (arg0
));
4872 build5 (enum tree_code code
, tree tt
, tree arg0
, tree arg1
,
4873 tree arg2
, tree arg3
, tree arg4 MEM_STAT_DECL
)
4875 bool constant
, read_only
, side_effects
;
4878 gcc_assert (TREE_CODE_LENGTH (code
) == 5);
4880 t
= make_node (code PASS_MEM_STAT
);
4883 side_effects
= TREE_SIDE_EFFECTS (t
);
4891 TREE_SIDE_EFFECTS (t
) = side_effects
;
4892 if (code
== TARGET_MEM_REF
)
4894 if (arg0
&& TREE_CODE (arg0
) == ADDR_EXPR
)
4896 tree o
= TREE_OPERAND (arg0
, 0);
4897 TREE_READONLY (t
) = TREE_READONLY (o
);
4898 TREE_THIS_VOLATILE (t
) = TREE_THIS_VOLATILE (o
);
4902 TREE_THIS_VOLATILE (t
)
4903 = (TREE_CODE_CLASS (code
) == tcc_reference
4904 && arg0
&& TREE_THIS_VOLATILE (arg0
));
4909 /* Build a simple MEM_REF tree with the sematics of a plain INDIRECT_REF
4910 on the pointer PTR. */
4913 build_simple_mem_ref_loc (location_t loc
, tree ptr
)
4915 poly_int64 offset
= 0;
4916 tree ptype
= TREE_TYPE (ptr
);
4918 /* For convenience allow addresses that collapse to a simple base
4920 if (TREE_CODE (ptr
) == ADDR_EXPR
4921 && (handled_component_p (TREE_OPERAND (ptr
, 0))
4922 || TREE_CODE (TREE_OPERAND (ptr
, 0)) == MEM_REF
))
4924 ptr
= get_addr_base_and_unit_offset (TREE_OPERAND (ptr
, 0), &offset
);
4926 if (TREE_CODE (ptr
) == MEM_REF
)
4928 offset
+= mem_ref_offset (ptr
).force_shwi ();
4929 ptr
= TREE_OPERAND (ptr
, 0);
4932 ptr
= build_fold_addr_expr (ptr
);
4933 gcc_assert (is_gimple_reg (ptr
) || is_gimple_min_invariant (ptr
));
4935 tem
= build2 (MEM_REF
, TREE_TYPE (ptype
),
4936 ptr
, build_int_cst (ptype
, offset
));
4937 SET_EXPR_LOCATION (tem
, loc
);
4941 /* Return the constant offset of a MEM_REF or TARGET_MEM_REF tree T. */
4944 mem_ref_offset (const_tree t
)
4946 return poly_offset_int::from (wi::to_poly_wide (TREE_OPERAND (t
, 1)),
4950 /* Return an invariant ADDR_EXPR of type TYPE taking the address of BASE
4951 offsetted by OFFSET units. */
4954 build_invariant_address (tree type
, tree base
, poly_int64 offset
)
4956 tree ref
= fold_build2 (MEM_REF
, TREE_TYPE (type
),
4957 build_fold_addr_expr (base
),
4958 build_int_cst (ptr_type_node
, offset
));
4959 tree addr
= build1 (ADDR_EXPR
, type
, ref
);
4960 recompute_tree_invariant_for_addr_expr (addr
);
4964 /* Similar except don't specify the TREE_TYPE
4965 and leave the TREE_SIDE_EFFECTS as 0.
4966 It is permissible for arguments to be null,
4967 or even garbage if their values do not matter. */
4970 build_nt (enum tree_code code
, ...)
4977 gcc_assert (TREE_CODE_CLASS (code
) != tcc_vl_exp
);
4981 t
= make_node (code
);
4982 length
= TREE_CODE_LENGTH (code
);
4984 for (i
= 0; i
< length
; i
++)
4985 TREE_OPERAND (t
, i
) = va_arg (p
, tree
);
4991 /* Similar to build_nt, but for creating a CALL_EXPR object with a
4995 build_nt_call_vec (tree fn
, vec
<tree
, va_gc
> *args
)
5000 ret
= build_vl_exp (CALL_EXPR
, vec_safe_length (args
) + 3);
5001 CALL_EXPR_FN (ret
) = fn
;
5002 CALL_EXPR_STATIC_CHAIN (ret
) = NULL_TREE
;
5003 FOR_EACH_VEC_SAFE_ELT (args
, ix
, t
)
5004 CALL_EXPR_ARG (ret
, ix
) = t
;
5008 /* Create a DECL_... node of code CODE, name NAME (if non-null)
5010 We do NOT enter this node in any sort of symbol table.
5012 LOC is the location of the decl.
5014 layout_decl is used to set up the decl's storage layout.
5015 Other slots are initialized to 0 or null pointers. */
5018 build_decl (location_t loc
, enum tree_code code
, tree name
,
5019 tree type MEM_STAT_DECL
)
5023 t
= make_node (code PASS_MEM_STAT
);
5024 DECL_SOURCE_LOCATION (t
) = loc
;
5026 /* if (type == error_mark_node)
5027 type = integer_type_node; */
5028 /* That is not done, deliberately, so that having error_mark_node
5029 as the type can suppress useless errors in the use of this variable. */
5031 DECL_NAME (t
) = name
;
5032 TREE_TYPE (t
) = type
;
5034 if (code
== VAR_DECL
|| code
== PARM_DECL
|| code
== RESULT_DECL
)
5040 /* Builds and returns function declaration with NAME and TYPE. */
5043 build_fn_decl (const char *name
, tree type
)
5045 tree id
= get_identifier (name
);
5046 tree decl
= build_decl (input_location
, FUNCTION_DECL
, id
, type
);
5048 DECL_EXTERNAL (decl
) = 1;
5049 TREE_PUBLIC (decl
) = 1;
5050 DECL_ARTIFICIAL (decl
) = 1;
5051 TREE_NOTHROW (decl
) = 1;
5056 vec
<tree
, va_gc
> *all_translation_units
;
5058 /* Builds a new translation-unit decl with name NAME, queues it in the
5059 global list of translation-unit decls and returns it. */
5062 build_translation_unit_decl (tree name
)
5064 tree tu
= build_decl (UNKNOWN_LOCATION
, TRANSLATION_UNIT_DECL
,
5066 TRANSLATION_UNIT_LANGUAGE (tu
) = lang_hooks
.name
;
5067 vec_safe_push (all_translation_units
, tu
);
5072 /* BLOCK nodes are used to represent the structure of binding contours
5073 and declarations, once those contours have been exited and their contents
5074 compiled. This information is used for outputting debugging info. */
5077 build_block (tree vars
, tree subblocks
, tree supercontext
, tree chain
)
5079 tree block
= make_node (BLOCK
);
5081 BLOCK_VARS (block
) = vars
;
5082 BLOCK_SUBBLOCKS (block
) = subblocks
;
5083 BLOCK_SUPERCONTEXT (block
) = supercontext
;
5084 BLOCK_CHAIN (block
) = chain
;
5089 /* Like SET_EXPR_LOCATION, but make sure the tree can have a location.
5091 LOC is the location to use in tree T. */
5094 protected_set_expr_location (tree t
, location_t loc
)
5096 if (CAN_HAVE_LOCATION_P (t
))
5097 SET_EXPR_LOCATION (t
, loc
);
5100 /* Data used when collecting DECLs and TYPEs for language data removal. */
5102 struct free_lang_data_d
5104 free_lang_data_d () : decls (100), types (100) {}
5106 /* Worklist to avoid excessive recursion. */
5107 auto_vec
<tree
> worklist
;
5109 /* Set of traversed objects. Used to avoid duplicate visits. */
5110 hash_set
<tree
> pset
;
5112 /* Array of symbols to process with free_lang_data_in_decl. */
5113 auto_vec
<tree
> decls
;
5115 /* Array of types to process with free_lang_data_in_type. */
5116 auto_vec
<tree
> types
;
5120 /* Add type or decl T to one of the list of tree nodes that need their
5121 language data removed. The lists are held inside FLD. */
5124 add_tree_to_fld_list (tree t
, struct free_lang_data_d
*fld
)
5127 fld
->decls
.safe_push (t
);
5128 else if (TYPE_P (t
))
5129 fld
->types
.safe_push (t
);
5134 /* Push tree node T into FLD->WORKLIST. */
5137 fld_worklist_push (tree t
, struct free_lang_data_d
*fld
)
5139 if (t
&& !is_lang_specific (t
) && !fld
->pset
.contains (t
))
5140 fld
->worklist
.safe_push ((t
));
5145 /* Return simplified TYPE_NAME of TYPE. */
5148 fld_simplified_type_name (tree type
)
5150 if (!TYPE_NAME (type
) || TREE_CODE (TYPE_NAME (type
)) != TYPE_DECL
)
5151 return TYPE_NAME (type
);
5152 /* Drop TYPE_DECLs in TYPE_NAME in favor of the identifier in the
5153 TYPE_DECL if the type doesn't have linkage.
5154 this must match fld_ */
5155 if (type
!= TYPE_MAIN_VARIANT (type
)
5156 || (!DECL_ASSEMBLER_NAME_SET_P (TYPE_NAME (type
))
5157 && (TREE_CODE (type
) != RECORD_TYPE
5158 || !TYPE_BINFO (type
)
5159 || !BINFO_VTABLE (TYPE_BINFO (type
)))))
5160 return DECL_NAME (TYPE_NAME (type
));
5161 return TYPE_NAME (type
);
5164 /* Do same comparsion as check_qualified_type skipping lang part of type
5165 and be more permissive about type names: we only care that names are
5166 same (for diagnostics) and that ODR names are the same.
5167 If INNER_TYPE is non-NULL, be sure that TREE_TYPE match it. */
5170 fld_type_variant_equal_p (tree t
, tree v
, tree inner_type
)
5172 if (TYPE_QUALS (t
) != TYPE_QUALS (v
)
5173 /* We want to match incomplete variants with complete types.
5174 In this case we need to ignore alignment. */
5175 || ((!RECORD_OR_UNION_TYPE_P (t
) || COMPLETE_TYPE_P (v
))
5176 && (TYPE_ALIGN (t
) != TYPE_ALIGN (v
)
5177 || TYPE_USER_ALIGN (t
) != TYPE_USER_ALIGN (v
)))
5178 || fld_simplified_type_name (t
) != fld_simplified_type_name (v
)
5179 || !attribute_list_equal (TYPE_ATTRIBUTES (t
),
5180 TYPE_ATTRIBUTES (v
))
5181 || (inner_type
&& TREE_TYPE (v
) != inner_type
))
5187 /* Find variant of FIRST that match T and create new one if necessary.
5188 Set TREE_TYPE to INNER_TYPE if non-NULL. */
5191 fld_type_variant (tree first
, tree t
, struct free_lang_data_d
*fld
,
5192 tree inner_type
= NULL
)
5194 if (first
== TYPE_MAIN_VARIANT (t
))
5196 for (tree v
= first
; v
; v
= TYPE_NEXT_VARIANT (v
))
5197 if (fld_type_variant_equal_p (t
, v
, inner_type
))
5199 tree v
= build_variant_type_copy (first
);
5200 TYPE_READONLY (v
) = TYPE_READONLY (t
);
5201 TYPE_VOLATILE (v
) = TYPE_VOLATILE (t
);
5202 TYPE_ATOMIC (v
) = TYPE_ATOMIC (t
);
5203 TYPE_RESTRICT (v
) = TYPE_RESTRICT (t
);
5204 TYPE_ADDR_SPACE (v
) = TYPE_ADDR_SPACE (t
);
5205 TYPE_NAME (v
) = TYPE_NAME (t
);
5206 TYPE_ATTRIBUTES (v
) = TYPE_ATTRIBUTES (t
);
5207 TYPE_CANONICAL (v
) = TYPE_CANONICAL (t
);
5208 /* Variants of incomplete types should have alignment
5209 set to BITS_PER_UNIT. Do not copy the actual alignment. */
5210 if (!RECORD_OR_UNION_TYPE_P (v
) || COMPLETE_TYPE_P (v
))
5212 SET_TYPE_ALIGN (v
, TYPE_ALIGN (t
));
5213 TYPE_USER_ALIGN (v
) = TYPE_USER_ALIGN (t
);
5216 TREE_TYPE (v
) = inner_type
;
5217 gcc_checking_assert (fld_type_variant_equal_p (t
,v
, inner_type
));
5218 if (!fld
->pset
.add (v
))
5219 add_tree_to_fld_list (v
, fld
);
5223 /* Map complete types to incomplete types. */
5225 static hash_map
<tree
, tree
> *fld_incomplete_types
;
5227 /* Map types to simplified types. */
5229 static hash_map
<tree
, tree
> *fld_simplified_types
;
5231 /* Produce variant of T whose TREE_TYPE is T2. If it is main variant,
5232 use MAP to prevent duplicates. */
5235 fld_process_array_type (tree t
, tree t2
, hash_map
<tree
, tree
> *map
,
5236 struct free_lang_data_d
*fld
)
5238 if (TREE_TYPE (t
) == t2
)
5241 if (TYPE_MAIN_VARIANT (t
) != t
)
5243 return fld_type_variant
5244 (fld_process_array_type (TYPE_MAIN_VARIANT (t
),
5245 TYPE_MAIN_VARIANT (t2
), map
, fld
),
5251 = map
->get_or_insert (t
, &existed
);
5254 array
= build_array_type_1 (t2
, TYPE_DOMAIN (t
),
5255 TYPE_TYPELESS_STORAGE (t
), false);
5256 TYPE_CANONICAL (array
) = TYPE_CANONICAL (t
);
5257 if (!fld
->pset
.add (array
))
5258 add_tree_to_fld_list (array
, fld
);
5263 /* Return CTX after removal of contexts that are not relevant */
5266 fld_decl_context (tree ctx
)
5268 /* Variably modified types are needed for tree_is_indexable to decide
5269 whether the type needs to go to local or global section.
5270 This code is semi-broken but for now it is easiest to keep contexts
5272 if (ctx
&& TYPE_P (ctx
)
5273 && !variably_modified_type_p (ctx
, NULL_TREE
))
5275 while (ctx
&& TYPE_P (ctx
))
5276 ctx
= TYPE_CONTEXT (ctx
);
5281 /* For T being aggregate type try to turn it into a incomplete variant.
5282 Return T if no simplification is possible. */
5285 fld_incomplete_type_of (tree t
, struct free_lang_data_d
*fld
)
5289 if (POINTER_TYPE_P (t
))
5291 tree t2
= fld_incomplete_type_of (TREE_TYPE (t
), fld
);
5292 if (t2
!= TREE_TYPE (t
))
5295 if (TREE_CODE (t
) == POINTER_TYPE
)
5296 first
= build_pointer_type_for_mode (t2
, TYPE_MODE (t
),
5297 TYPE_REF_CAN_ALIAS_ALL (t
));
5299 first
= build_reference_type_for_mode (t2
, TYPE_MODE (t
),
5300 TYPE_REF_CAN_ALIAS_ALL (t
));
5301 gcc_assert (TYPE_CANONICAL (t2
) != t2
5302 && TYPE_CANONICAL (t2
) == TYPE_CANONICAL (TREE_TYPE (t
)));
5303 if (!fld
->pset
.add (first
))
5304 add_tree_to_fld_list (first
, fld
);
5305 return fld_type_variant (first
, t
, fld
);
5309 if (TREE_CODE (t
) == ARRAY_TYPE
)
5310 return fld_process_array_type (t
,
5311 fld_incomplete_type_of (TREE_TYPE (t
), fld
),
5312 fld_incomplete_types
, fld
);
5313 if ((!RECORD_OR_UNION_TYPE_P (t
) && TREE_CODE (t
) != ENUMERAL_TYPE
)
5314 || !COMPLETE_TYPE_P (t
))
5316 if (TYPE_MAIN_VARIANT (t
) == t
)
5320 = fld_incomplete_types
->get_or_insert (t
, &existed
);
5324 copy
= build_distinct_type_copy (t
);
5326 /* It is possible that type was not seen by free_lang_data yet. */
5327 if (!fld
->pset
.add (copy
))
5328 add_tree_to_fld_list (copy
, fld
);
5329 TYPE_SIZE (copy
) = NULL
;
5330 TYPE_USER_ALIGN (copy
) = 0;
5331 TYPE_SIZE_UNIT (copy
) = NULL
;
5332 TYPE_CANONICAL (copy
) = TYPE_CANONICAL (t
);
5333 TREE_ADDRESSABLE (copy
) = 0;
5334 if (AGGREGATE_TYPE_P (t
))
5336 SET_TYPE_MODE (copy
, VOIDmode
);
5337 SET_TYPE_ALIGN (copy
, BITS_PER_UNIT
);
5338 TYPE_TYPELESS_STORAGE (copy
) = 0;
5339 TYPE_FIELDS (copy
) = NULL
;
5340 TYPE_BINFO (copy
) = NULL
;
5343 TYPE_VALUES (copy
) = NULL
;
5345 /* Build copy of TYPE_DECL in TYPE_NAME if necessary.
5346 This is needed for ODR violation warnings to come out right (we
5347 want duplicate TYPE_DECLs whenever the type is duplicated because
5348 of ODR violation. Because lang data in the TYPE_DECL may not
5349 have been freed yet, rebuild it from scratch and copy relevant
5351 TYPE_NAME (copy
) = fld_simplified_type_name (copy
);
5352 tree name
= TYPE_NAME (copy
);
5354 if (name
&& TREE_CODE (name
) == TYPE_DECL
)
5356 gcc_checking_assert (TREE_TYPE (name
) == t
);
5357 tree name2
= build_decl (DECL_SOURCE_LOCATION (name
), TYPE_DECL
,
5358 DECL_NAME (name
), copy
);
5359 if (DECL_ASSEMBLER_NAME_SET_P (name
))
5360 SET_DECL_ASSEMBLER_NAME (name2
, DECL_ASSEMBLER_NAME (name
));
5361 SET_DECL_ALIGN (name2
, 0);
5362 DECL_CONTEXT (name2
) = fld_decl_context
5363 (DECL_CONTEXT (name
));
5364 TYPE_NAME (copy
) = name2
;
5369 return (fld_type_variant
5370 (fld_incomplete_type_of (TYPE_MAIN_VARIANT (t
), fld
), t
, fld
));
5373 /* Simplify type T for scenarios where we do not need complete pointer
5377 fld_simplified_type (tree t
, struct free_lang_data_d
*fld
)
5381 if (POINTER_TYPE_P (t
))
5382 return fld_incomplete_type_of (t
, fld
);
5383 /* FIXME: This triggers verification error, see PR88140. */
5384 if (TREE_CODE (t
) == ARRAY_TYPE
&& 0)
5385 return fld_process_array_type (t
, fld_simplified_type (TREE_TYPE (t
), fld
),
5386 fld_simplified_types
, fld
);
5390 /* Reset the expression *EXPR_P, a size or position.
5392 ??? We could reset all non-constant sizes or positions. But it's cheap
5393 enough to not do so and refrain from adding workarounds to dwarf2out.c.
5395 We need to reset self-referential sizes or positions because they cannot
5396 be gimplified and thus can contain a CALL_EXPR after the gimplification
5397 is finished, which will run afoul of LTO streaming. And they need to be
5398 reset to something essentially dummy but not constant, so as to preserve
5399 the properties of the object they are attached to. */
5402 free_lang_data_in_one_sizepos (tree
*expr_p
)
5404 tree expr
= *expr_p
;
5405 if (CONTAINS_PLACEHOLDER_P (expr
))
5406 *expr_p
= build0 (PLACEHOLDER_EXPR
, TREE_TYPE (expr
));
5410 /* Reset all the fields in a binfo node BINFO. We only keep
5411 BINFO_VTABLE, which is used by gimple_fold_obj_type_ref. */
5414 free_lang_data_in_binfo (tree binfo
)
5419 gcc_assert (TREE_CODE (binfo
) == TREE_BINFO
);
5421 BINFO_VIRTUALS (binfo
) = NULL_TREE
;
5422 BINFO_BASE_ACCESSES (binfo
) = NULL
;
5423 BINFO_INHERITANCE_CHAIN (binfo
) = NULL_TREE
;
5424 BINFO_SUBVTT_INDEX (binfo
) = NULL_TREE
;
5425 BINFO_VPTR_FIELD (binfo
) = NULL_TREE
;
5427 FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (binfo
), i
, t
)
5428 free_lang_data_in_binfo (t
);
5432 /* Reset all language specific information still present in TYPE. */
5435 free_lang_data_in_type (tree type
, struct free_lang_data_d
*fld
)
5437 gcc_assert (TYPE_P (type
));
5439 /* Give the FE a chance to remove its own data first. */
5440 lang_hooks
.free_lang_data (type
);
5442 TREE_LANG_FLAG_0 (type
) = 0;
5443 TREE_LANG_FLAG_1 (type
) = 0;
5444 TREE_LANG_FLAG_2 (type
) = 0;
5445 TREE_LANG_FLAG_3 (type
) = 0;
5446 TREE_LANG_FLAG_4 (type
) = 0;
5447 TREE_LANG_FLAG_5 (type
) = 0;
5448 TREE_LANG_FLAG_6 (type
) = 0;
5450 TYPE_NEEDS_CONSTRUCTING (type
) = 0;
5452 /* Purge non-marked variants from the variants chain, so that they
5453 don't reappear in the IL after free_lang_data. */
5454 while (TYPE_NEXT_VARIANT (type
)
5455 && !fld
->pset
.contains (TYPE_NEXT_VARIANT (type
)))
5457 tree t
= TYPE_NEXT_VARIANT (type
);
5458 TYPE_NEXT_VARIANT (type
) = TYPE_NEXT_VARIANT (t
);
5459 /* Turn the removed types into distinct types. */
5460 TYPE_MAIN_VARIANT (t
) = t
;
5461 TYPE_NEXT_VARIANT (t
) = NULL_TREE
;
5464 if (TREE_CODE (type
) == FUNCTION_TYPE
)
5466 TREE_TYPE (type
) = fld_simplified_type (TREE_TYPE (type
), fld
);
5467 /* Remove the const and volatile qualifiers from arguments. The
5468 C++ front end removes them, but the C front end does not,
5469 leading to false ODR violation errors when merging two
5470 instances of the same function signature compiled by
5471 different front ends. */
5472 for (tree p
= TYPE_ARG_TYPES (type
); p
; p
= TREE_CHAIN (p
))
5474 TREE_VALUE (p
) = fld_simplified_type (TREE_VALUE (p
), fld
);
5475 tree arg_type
= TREE_VALUE (p
);
5477 if (TYPE_READONLY (arg_type
) || TYPE_VOLATILE (arg_type
))
5479 int quals
= TYPE_QUALS (arg_type
)
5481 & ~TYPE_QUAL_VOLATILE
;
5482 TREE_VALUE (p
) = build_qualified_type (arg_type
, quals
);
5483 if (!fld
->pset
.add (TREE_VALUE (p
)))
5484 free_lang_data_in_type (TREE_VALUE (p
), fld
);
5486 /* C++ FE uses TREE_PURPOSE to store initial values. */
5487 TREE_PURPOSE (p
) = NULL
;
5490 else if (TREE_CODE (type
) == METHOD_TYPE
)
5492 TREE_TYPE (type
) = fld_simplified_type (TREE_TYPE (type
), fld
);
5493 for (tree p
= TYPE_ARG_TYPES (type
); p
; p
= TREE_CHAIN (p
))
5495 /* C++ FE uses TREE_PURPOSE to store initial values. */
5496 TREE_VALUE (p
) = fld_simplified_type (TREE_VALUE (p
), fld
);
5497 TREE_PURPOSE (p
) = NULL
;
5500 else if (RECORD_OR_UNION_TYPE_P (type
))
5502 /* Remove members that are not FIELD_DECLs from the field list
5503 of an aggregate. These occur in C++. */
5504 for (tree
*prev
= &TYPE_FIELDS (type
), member
; (member
= *prev
);)
5505 if (TREE_CODE (member
) == FIELD_DECL
)
5506 prev
= &DECL_CHAIN (member
);
5508 *prev
= DECL_CHAIN (member
);
5510 TYPE_VFIELD (type
) = NULL_TREE
;
5512 if (TYPE_BINFO (type
))
5514 free_lang_data_in_binfo (TYPE_BINFO (type
));
5515 /* We need to preserve link to bases and virtual table for all
5516 polymorphic types to make devirtualization machinery working. */
5517 if (!BINFO_VTABLE (TYPE_BINFO (type
))
5518 || !flag_devirtualize
)
5519 TYPE_BINFO (type
) = NULL
;
5522 else if (INTEGRAL_TYPE_P (type
)
5523 || SCALAR_FLOAT_TYPE_P (type
)
5524 || FIXED_POINT_TYPE_P (type
))
5526 if (TREE_CODE (type
) == ENUMERAL_TYPE
)
5528 /* Type values are used only for C++ ODR checking. Drop them
5529 for all type variants and non-ODR types.
5530 For ODR types the data is freed in free_odr_warning_data. */
5531 if (TYPE_MAIN_VARIANT (type
) != type
5532 || !type_with_linkage_p (type
))
5533 TYPE_VALUES (type
) = NULL
;
5535 /* Simplify representation by recording only values rather
5536 than const decls. */
5537 for (tree e
= TYPE_VALUES (type
); e
; e
= TREE_CHAIN (e
))
5538 if (TREE_CODE (TREE_VALUE (e
)) == CONST_DECL
)
5539 TREE_VALUE (e
) = DECL_INITIAL (TREE_VALUE (e
));
5541 free_lang_data_in_one_sizepos (&TYPE_MIN_VALUE (type
));
5542 free_lang_data_in_one_sizepos (&TYPE_MAX_VALUE (type
));
5545 TYPE_LANG_SLOT_1 (type
) = NULL_TREE
;
5547 free_lang_data_in_one_sizepos (&TYPE_SIZE (type
));
5548 free_lang_data_in_one_sizepos (&TYPE_SIZE_UNIT (type
));
5550 if (TYPE_CONTEXT (type
)
5551 && TREE_CODE (TYPE_CONTEXT (type
)) == BLOCK
)
5553 tree ctx
= TYPE_CONTEXT (type
);
5556 ctx
= BLOCK_SUPERCONTEXT (ctx
);
5558 while (ctx
&& TREE_CODE (ctx
) == BLOCK
);
5559 TYPE_CONTEXT (type
) = ctx
;
5562 TYPE_STUB_DECL (type
) = NULL
;
5563 TYPE_NAME (type
) = fld_simplified_type_name (type
);
5567 /* Return true if DECL may need an assembler name to be set. */
5570 need_assembler_name_p (tree decl
)
5572 /* We use DECL_ASSEMBLER_NAME to hold mangled type names for One Definition
5573 Rule merging. This makes type_odr_p to return true on those types during
5574 LTO and by comparing the mangled name, we can say what types are intended
5575 to be equivalent across compilation unit.
5577 We do not store names of type_in_anonymous_namespace_p.
5579 Record, union and enumeration type have linkage that allows use
5580 to check type_in_anonymous_namespace_p. We do not mangle compound types
5581 that always can be compared structurally.
5583 Similarly for builtin types, we compare properties of their main variant.
5584 A special case are integer types where mangling do make differences
5585 between char/signed char/unsigned char etc. Storing name for these makes
5586 e.g. -fno-signed-char/-fsigned-char mismatches to be handled well.
5587 See cp/mangle.c:write_builtin_type for details. */
5589 if (TREE_CODE (decl
) == TYPE_DECL
)
5591 if (flag_lto_odr_type_mering
5593 && decl
== TYPE_NAME (TREE_TYPE (decl
))
5594 && TYPE_MAIN_VARIANT (TREE_TYPE (decl
)) == TREE_TYPE (decl
)
5595 && !TYPE_ARTIFICIAL (TREE_TYPE (decl
))
5596 && (type_with_linkage_p (TREE_TYPE (decl
))
5597 || TREE_CODE (TREE_TYPE (decl
)) == INTEGER_TYPE
)
5598 && !variably_modified_type_p (TREE_TYPE (decl
), NULL_TREE
))
5599 return !DECL_ASSEMBLER_NAME_SET_P (decl
);
5602 /* Only FUNCTION_DECLs and VAR_DECLs are considered. */
5603 if (!VAR_OR_FUNCTION_DECL_P (decl
))
5606 /* If DECL already has its assembler name set, it does not need a
5608 if (!HAS_DECL_ASSEMBLER_NAME_P (decl
)
5609 || DECL_ASSEMBLER_NAME_SET_P (decl
))
5612 /* Abstract decls do not need an assembler name. */
5613 if (DECL_ABSTRACT_P (decl
))
5616 /* For VAR_DECLs, only static, public and external symbols need an
5619 && !TREE_STATIC (decl
)
5620 && !TREE_PUBLIC (decl
)
5621 && !DECL_EXTERNAL (decl
))
5624 if (TREE_CODE (decl
) == FUNCTION_DECL
)
5626 /* Do not set assembler name on builtins. Allow RTL expansion to
5627 decide whether to expand inline or via a regular call. */
5628 if (fndecl_built_in_p (decl
)
5629 && DECL_BUILT_IN_CLASS (decl
) != BUILT_IN_FRONTEND
)
5632 /* Functions represented in the callgraph need an assembler name. */
5633 if (cgraph_node::get (decl
) != NULL
)
5636 /* Unused and not public functions don't need an assembler name. */
5637 if (!TREE_USED (decl
) && !TREE_PUBLIC (decl
))
5645 /* Reset all language specific information still present in symbol
5649 free_lang_data_in_decl (tree decl
, struct free_lang_data_d
*fld
)
5651 gcc_assert (DECL_P (decl
));
5653 /* Give the FE a chance to remove its own data first. */
5654 lang_hooks
.free_lang_data (decl
);
5656 TREE_LANG_FLAG_0 (decl
) = 0;
5657 TREE_LANG_FLAG_1 (decl
) = 0;
5658 TREE_LANG_FLAG_2 (decl
) = 0;
5659 TREE_LANG_FLAG_3 (decl
) = 0;
5660 TREE_LANG_FLAG_4 (decl
) = 0;
5661 TREE_LANG_FLAG_5 (decl
) = 0;
5662 TREE_LANG_FLAG_6 (decl
) = 0;
5664 free_lang_data_in_one_sizepos (&DECL_SIZE (decl
));
5665 free_lang_data_in_one_sizepos (&DECL_SIZE_UNIT (decl
));
5666 if (TREE_CODE (decl
) == FIELD_DECL
)
5668 DECL_FCONTEXT (decl
) = NULL
;
5669 free_lang_data_in_one_sizepos (&DECL_FIELD_OFFSET (decl
));
5670 if (TREE_CODE (DECL_CONTEXT (decl
)) == QUAL_UNION_TYPE
)
5671 DECL_QUALIFIER (decl
) = NULL_TREE
;
5674 if (TREE_CODE (decl
) == FUNCTION_DECL
)
5676 struct cgraph_node
*node
;
5677 /* Frontends do not set TREE_ADDRESSABLE on public variables even though
5678 the address may be taken in other unit, so this flag has no practical
5681 It would make more sense if frontends set TREE_ADDRESSABLE to 0 only
5682 for public objects that indeed cannot be adressed, but it is not
5683 the case. Set the flag to true so we do not get merge failures for
5684 i.e. virtual tables between units that take address of it and
5685 units that don't. */
5686 if (TREE_PUBLIC (decl
))
5687 TREE_ADDRESSABLE (decl
) = true;
5688 TREE_TYPE (decl
) = fld_simplified_type (TREE_TYPE (decl
), fld
);
5689 if (!(node
= cgraph_node::get (decl
))
5690 || (!node
->definition
&& !node
->clones
))
5693 node
->release_body ();
5696 release_function_body (decl
);
5697 DECL_ARGUMENTS (decl
) = NULL
;
5698 DECL_RESULT (decl
) = NULL
;
5699 DECL_INITIAL (decl
) = error_mark_node
;
5702 if (gimple_has_body_p (decl
) || (node
&& node
->thunk
.thunk_p
))
5706 /* If DECL has a gimple body, then the context for its
5707 arguments must be DECL. Otherwise, it doesn't really
5708 matter, as we will not be emitting any code for DECL. In
5709 general, there may be other instances of DECL created by
5710 the front end and since PARM_DECLs are generally shared,
5711 their DECL_CONTEXT changes as the replicas of DECL are
5712 created. The only time where DECL_CONTEXT is important
5713 is for the FUNCTION_DECLs that have a gimple body (since
5714 the PARM_DECL will be used in the function's body). */
5715 for (t
= DECL_ARGUMENTS (decl
); t
; t
= TREE_CHAIN (t
))
5716 DECL_CONTEXT (t
) = decl
;
5717 if (!DECL_FUNCTION_SPECIFIC_TARGET (decl
))
5718 DECL_FUNCTION_SPECIFIC_TARGET (decl
)
5719 = target_option_default_node
;
5720 if (!DECL_FUNCTION_SPECIFIC_OPTIMIZATION (decl
))
5721 DECL_FUNCTION_SPECIFIC_OPTIMIZATION (decl
)
5722 = optimization_default_node
;
5725 /* DECL_SAVED_TREE holds the GENERIC representation for DECL.
5726 At this point, it is not needed anymore. */
5727 DECL_SAVED_TREE (decl
) = NULL_TREE
;
5729 /* Clear the abstract origin if it refers to a method.
5730 Otherwise dwarf2out.c will ICE as we splice functions out of
5731 TYPE_FIELDS and thus the origin will not be output
5733 if (DECL_ABSTRACT_ORIGIN (decl
)
5734 && DECL_CONTEXT (DECL_ABSTRACT_ORIGIN (decl
))
5735 && RECORD_OR_UNION_TYPE_P
5736 (DECL_CONTEXT (DECL_ABSTRACT_ORIGIN (decl
))))
5737 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
5739 DECL_VINDEX (decl
) = NULL_TREE
;
5741 else if (VAR_P (decl
))
5743 /* See comment above why we set the flag for functoins. */
5744 if (TREE_PUBLIC (decl
))
5745 TREE_ADDRESSABLE (decl
) = true;
5746 if ((DECL_EXTERNAL (decl
)
5747 && (!TREE_STATIC (decl
) || !TREE_READONLY (decl
)))
5748 || (decl_function_context (decl
) && !TREE_STATIC (decl
)))
5749 DECL_INITIAL (decl
) = NULL_TREE
;
5751 else if (TREE_CODE (decl
) == TYPE_DECL
)
5753 DECL_VISIBILITY (decl
) = VISIBILITY_DEFAULT
;
5754 DECL_VISIBILITY_SPECIFIED (decl
) = 0;
5755 TREE_PUBLIC (decl
) = 0;
5756 TREE_PRIVATE (decl
) = 0;
5757 DECL_ARTIFICIAL (decl
) = 0;
5758 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 0;
5759 DECL_INITIAL (decl
) = NULL_TREE
;
5760 DECL_ORIGINAL_TYPE (decl
) = NULL_TREE
;
5761 DECL_MODE (decl
) = VOIDmode
;
5762 SET_DECL_ALIGN (decl
, 0);
5763 /* TREE_TYPE is cleared at WPA time in free_odr_warning_data. */
5765 else if (TREE_CODE (decl
) == FIELD_DECL
)
5767 TREE_TYPE (decl
) = fld_simplified_type (TREE_TYPE (decl
), fld
);
5768 DECL_INITIAL (decl
) = NULL_TREE
;
5770 else if (TREE_CODE (decl
) == TRANSLATION_UNIT_DECL
5771 && DECL_INITIAL (decl
)
5772 && TREE_CODE (DECL_INITIAL (decl
)) == BLOCK
)
5774 /* Strip builtins from the translation-unit BLOCK. We still have targets
5775 without builtin_decl_explicit support and also builtins are shared
5776 nodes and thus we can't use TREE_CHAIN in multiple lists. */
5777 tree
*nextp
= &BLOCK_VARS (DECL_INITIAL (decl
));
5781 if (fndecl_built_in_p (var
))
5782 *nextp
= TREE_CHAIN (var
);
5784 nextp
= &TREE_CHAIN (var
);
5787 /* We need to keep field decls associated with their trees. Otherwise tree
5788 merging may merge some fileds and keep others disjoint wich in turn will
5789 not do well with TREE_CHAIN pointers linking them.
5791 Also do not drop containing types for virtual methods and tables because
5792 these are needed by devirtualization.
5793 C++ destructors are special because C++ frontends sometimes produces
5794 virtual destructor as an alias of non-virtual destructor. In
5795 devirutalization code we always walk through aliases and we need
5796 context to be preserved too. See PR89335 */
5797 if (TREE_CODE (decl
) != FIELD_DECL
5798 && ((TREE_CODE (decl
) != VAR_DECL
&& TREE_CODE (decl
) != FUNCTION_DECL
)
5799 || (!DECL_VIRTUAL_P (decl
)
5800 && (TREE_CODE (decl
) != FUNCTION_DECL
5801 || !DECL_CXX_DESTRUCTOR_P (decl
)))))
5802 DECL_CONTEXT (decl
) = fld_decl_context (DECL_CONTEXT (decl
));
5806 /* Operand callback helper for free_lang_data_in_node. *TP is the
5807 subtree operand being considered. */
5810 find_decls_types_r (tree
*tp
, int *ws
, void *data
)
5813 struct free_lang_data_d
*fld
= (struct free_lang_data_d
*) data
;
5815 if (TREE_CODE (t
) == TREE_LIST
)
5818 /* Language specific nodes will be removed, so there is no need
5819 to gather anything under them. */
5820 if (is_lang_specific (t
))
5828 /* Note that walk_tree does not traverse every possible field in
5829 decls, so we have to do our own traversals here. */
5830 add_tree_to_fld_list (t
, fld
);
5832 fld_worklist_push (DECL_NAME (t
), fld
);
5833 fld_worklist_push (DECL_CONTEXT (t
), fld
);
5834 fld_worklist_push (DECL_SIZE (t
), fld
);
5835 fld_worklist_push (DECL_SIZE_UNIT (t
), fld
);
5837 /* We are going to remove everything under DECL_INITIAL for
5838 TYPE_DECLs. No point walking them. */
5839 if (TREE_CODE (t
) != TYPE_DECL
)
5840 fld_worklist_push (DECL_INITIAL (t
), fld
);
5842 fld_worklist_push (DECL_ATTRIBUTES (t
), fld
);
5843 fld_worklist_push (DECL_ABSTRACT_ORIGIN (t
), fld
);
5845 if (TREE_CODE (t
) == FUNCTION_DECL
)
5847 fld_worklist_push (DECL_ARGUMENTS (t
), fld
);
5848 fld_worklist_push (DECL_RESULT (t
), fld
);
5850 else if (TREE_CODE (t
) == FIELD_DECL
)
5852 fld_worklist_push (DECL_FIELD_OFFSET (t
), fld
);
5853 fld_worklist_push (DECL_BIT_FIELD_TYPE (t
), fld
);
5854 fld_worklist_push (DECL_FIELD_BIT_OFFSET (t
), fld
);
5855 fld_worklist_push (DECL_FCONTEXT (t
), fld
);
5858 if ((VAR_P (t
) || TREE_CODE (t
) == PARM_DECL
)
5859 && DECL_HAS_VALUE_EXPR_P (t
))
5860 fld_worklist_push (DECL_VALUE_EXPR (t
), fld
);
5862 if (TREE_CODE (t
) != FIELD_DECL
5863 && TREE_CODE (t
) != TYPE_DECL
)
5864 fld_worklist_push (TREE_CHAIN (t
), fld
);
5867 else if (TYPE_P (t
))
5869 /* Note that walk_tree does not traverse every possible field in
5870 types, so we have to do our own traversals here. */
5871 add_tree_to_fld_list (t
, fld
);
5873 if (!RECORD_OR_UNION_TYPE_P (t
))
5874 fld_worklist_push (TYPE_CACHED_VALUES (t
), fld
);
5875 fld_worklist_push (TYPE_SIZE (t
), fld
);
5876 fld_worklist_push (TYPE_SIZE_UNIT (t
), fld
);
5877 fld_worklist_push (TYPE_ATTRIBUTES (t
), fld
);
5878 fld_worklist_push (TYPE_POINTER_TO (t
), fld
);
5879 fld_worklist_push (TYPE_REFERENCE_TO (t
), fld
);
5880 fld_worklist_push (TYPE_NAME (t
), fld
);
5881 /* While we do not stream TYPE_POINTER_TO and TYPE_REFERENCE_TO
5882 lists, we may look types up in these lists and use them while
5883 optimizing the function body. Thus we need to free lang data
5885 if (TREE_CODE (t
) == POINTER_TYPE
)
5886 fld_worklist_push (TYPE_NEXT_PTR_TO (t
), fld
);
5887 if (TREE_CODE (t
) == REFERENCE_TYPE
)
5888 fld_worklist_push (TYPE_NEXT_REF_TO (t
), fld
);
5889 if (!POINTER_TYPE_P (t
))
5890 fld_worklist_push (TYPE_MIN_VALUE_RAW (t
), fld
);
5891 /* TYPE_MAX_VALUE_RAW is TYPE_BINFO for record types. */
5892 if (!RECORD_OR_UNION_TYPE_P (t
))
5893 fld_worklist_push (TYPE_MAX_VALUE_RAW (t
), fld
);
5894 fld_worklist_push (TYPE_MAIN_VARIANT (t
), fld
);
5895 /* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
5896 do not and want not to reach unused variants this way. */
5897 if (TYPE_CONTEXT (t
))
5899 tree ctx
= TYPE_CONTEXT (t
);
5900 /* We adjust BLOCK TYPE_CONTEXTs to the innermost non-BLOCK one.
5901 So push that instead. */
5902 while (ctx
&& TREE_CODE (ctx
) == BLOCK
)
5903 ctx
= BLOCK_SUPERCONTEXT (ctx
);
5904 fld_worklist_push (ctx
, fld
);
5906 fld_worklist_push (TYPE_CANONICAL (t
), fld
);
5908 if (RECORD_OR_UNION_TYPE_P (t
) && TYPE_BINFO (t
))
5912 FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (TYPE_BINFO (t
)), i
, tem
)
5913 fld_worklist_push (TREE_TYPE (tem
), fld
);
5914 fld_worklist_push (BINFO_TYPE (TYPE_BINFO (t
)), fld
);
5915 fld_worklist_push (BINFO_VTABLE (TYPE_BINFO (t
)), fld
);
5917 if (RECORD_OR_UNION_TYPE_P (t
))
5920 /* Push all TYPE_FIELDS - there can be interleaving interesting
5921 and non-interesting things. */
5922 tem
= TYPE_FIELDS (t
);
5925 if (TREE_CODE (tem
) == FIELD_DECL
)
5926 fld_worklist_push (tem
, fld
);
5927 tem
= TREE_CHAIN (tem
);
5930 if (FUNC_OR_METHOD_TYPE_P (t
))
5931 fld_worklist_push (TYPE_METHOD_BASETYPE (t
), fld
);
5933 fld_worklist_push (TYPE_STUB_DECL (t
), fld
);
5936 else if (TREE_CODE (t
) == BLOCK
)
5938 for (tree
*tem
= &BLOCK_VARS (t
); *tem
; )
5940 if (TREE_CODE (*tem
) != VAR_DECL
5941 || !auto_var_in_fn_p (*tem
, DECL_CONTEXT (*tem
)))
5943 gcc_assert (TREE_CODE (*tem
) != RESULT_DECL
5944 && TREE_CODE (*tem
) != PARM_DECL
);
5945 *tem
= TREE_CHAIN (*tem
);
5949 fld_worklist_push (*tem
, fld
);
5950 tem
= &TREE_CHAIN (*tem
);
5953 for (tree tem
= BLOCK_SUBBLOCKS (t
); tem
; tem
= BLOCK_CHAIN (tem
))
5954 fld_worklist_push (tem
, fld
);
5955 fld_worklist_push (BLOCK_ABSTRACT_ORIGIN (t
), fld
);
5958 if (TREE_CODE (t
) != IDENTIFIER_NODE
5959 && CODE_CONTAINS_STRUCT (TREE_CODE (t
), TS_TYPED
))
5960 fld_worklist_push (TREE_TYPE (t
), fld
);
5966 /* Find decls and types in T. */
5969 find_decls_types (tree t
, struct free_lang_data_d
*fld
)
5973 if (!fld
->pset
.contains (t
))
5974 walk_tree (&t
, find_decls_types_r
, fld
, &fld
->pset
);
5975 if (fld
->worklist
.is_empty ())
5977 t
= fld
->worklist
.pop ();
5981 /* Translate all the types in LIST with the corresponding runtime
5985 get_eh_types_for_runtime (tree list
)
5989 if (list
== NULL_TREE
)
5992 head
= build_tree_list (0, lookup_type_for_runtime (TREE_VALUE (list
)));
5994 list
= TREE_CHAIN (list
);
5997 tree n
= build_tree_list (0, lookup_type_for_runtime (TREE_VALUE (list
)));
5998 TREE_CHAIN (prev
) = n
;
5999 prev
= TREE_CHAIN (prev
);
6000 list
= TREE_CHAIN (list
);
6007 /* Find decls and types referenced in EH region R and store them in
6008 FLD->DECLS and FLD->TYPES. */
6011 find_decls_types_in_eh_region (eh_region r
, struct free_lang_data_d
*fld
)
6022 /* The types referenced in each catch must first be changed to the
6023 EH types used at runtime. This removes references to FE types
6025 for (c
= r
->u
.eh_try
.first_catch
; c
; c
= c
->next_catch
)
6027 c
->type_list
= get_eh_types_for_runtime (c
->type_list
);
6028 walk_tree (&c
->type_list
, find_decls_types_r
, fld
, &fld
->pset
);
6033 case ERT_ALLOWED_EXCEPTIONS
:
6034 r
->u
.allowed
.type_list
6035 = get_eh_types_for_runtime (r
->u
.allowed
.type_list
);
6036 walk_tree (&r
->u
.allowed
.type_list
, find_decls_types_r
, fld
, &fld
->pset
);
6039 case ERT_MUST_NOT_THROW
:
6040 walk_tree (&r
->u
.must_not_throw
.failure_decl
,
6041 find_decls_types_r
, fld
, &fld
->pset
);
6047 /* Find decls and types referenced in cgraph node N and store them in
6048 FLD->DECLS and FLD->TYPES. Unlike pass_referenced_vars, this will
6049 look for *every* kind of DECL and TYPE node reachable from N,
6050 including those embedded inside types and decls (i.e,, TYPE_DECLs,
6051 NAMESPACE_DECLs, etc). */
6054 find_decls_types_in_node (struct cgraph_node
*n
, struct free_lang_data_d
*fld
)
6057 struct function
*fn
;
6061 find_decls_types (n
->decl
, fld
);
6063 if (!gimple_has_body_p (n
->decl
))
6066 gcc_assert (current_function_decl
== NULL_TREE
&& cfun
== NULL
);
6068 fn
= DECL_STRUCT_FUNCTION (n
->decl
);
6070 /* Traverse locals. */
6071 FOR_EACH_LOCAL_DECL (fn
, ix
, t
)
6072 find_decls_types (t
, fld
);
6074 /* Traverse EH regions in FN. */
6077 FOR_ALL_EH_REGION_FN (r
, fn
)
6078 find_decls_types_in_eh_region (r
, fld
);
6081 /* Traverse every statement in FN. */
6082 FOR_EACH_BB_FN (bb
, fn
)
6085 gimple_stmt_iterator si
;
6088 for (psi
= gsi_start_phis (bb
); !gsi_end_p (psi
); gsi_next (&psi
))
6090 gphi
*phi
= psi
.phi ();
6092 for (i
= 0; i
< gimple_phi_num_args (phi
); i
++)
6094 tree
*arg_p
= gimple_phi_arg_def_ptr (phi
, i
);
6095 find_decls_types (*arg_p
, fld
);
6099 for (si
= gsi_start_bb (bb
); !gsi_end_p (si
); gsi_next (&si
))
6101 gimple
*stmt
= gsi_stmt (si
);
6103 if (is_gimple_call (stmt
))
6104 find_decls_types (gimple_call_fntype (stmt
), fld
);
6106 for (i
= 0; i
< gimple_num_ops (stmt
); i
++)
6108 tree arg
= gimple_op (stmt
, i
);
6109 find_decls_types (arg
, fld
);
6116 /* Find decls and types referenced in varpool node N and store them in
6117 FLD->DECLS and FLD->TYPES. Unlike pass_referenced_vars, this will
6118 look for *every* kind of DECL and TYPE node reachable from N,
6119 including those embedded inside types and decls (i.e,, TYPE_DECLs,
6120 NAMESPACE_DECLs, etc). */
6123 find_decls_types_in_var (varpool_node
*v
, struct free_lang_data_d
*fld
)
6125 find_decls_types (v
->decl
, fld
);
6128 /* If T needs an assembler name, have one created for it. */
6131 assign_assembler_name_if_needed (tree t
)
6133 if (need_assembler_name_p (t
))
6135 /* When setting DECL_ASSEMBLER_NAME, the C++ mangler may emit
6136 diagnostics that use input_location to show locus
6137 information. The problem here is that, at this point,
6138 input_location is generally anchored to the end of the file
6139 (since the parser is long gone), so we don't have a good
6140 position to pin it to.
6142 To alleviate this problem, this uses the location of T's
6143 declaration. Examples of this are
6144 testsuite/g++.dg/template/cond2.C and
6145 testsuite/g++.dg/template/pr35240.C. */
6146 location_t saved_location
= input_location
;
6147 input_location
= DECL_SOURCE_LOCATION (t
);
6149 decl_assembler_name (t
);
6151 input_location
= saved_location
;
6156 /* Free language specific information for every operand and expression
6157 in every node of the call graph. This process operates in three stages:
6159 1- Every callgraph node and varpool node is traversed looking for
6160 decls and types embedded in them. This is a more exhaustive
6161 search than that done by find_referenced_vars, because it will
6162 also collect individual fields, decls embedded in types, etc.
6164 2- All the decls found are sent to free_lang_data_in_decl.
6166 3- All the types found are sent to free_lang_data_in_type.
6168 The ordering between decls and types is important because
6169 free_lang_data_in_decl sets assembler names, which includes
6170 mangling. So types cannot be freed up until assembler names have
6174 free_lang_data_in_cgraph (struct free_lang_data_d
*fld
)
6176 struct cgraph_node
*n
;
6182 /* Find decls and types in the body of every function in the callgraph. */
6183 FOR_EACH_FUNCTION (n
)
6184 find_decls_types_in_node (n
, fld
);
6186 FOR_EACH_VEC_SAFE_ELT (alias_pairs
, i
, p
)
6187 find_decls_types (p
->decl
, fld
);
6189 /* Find decls and types in every varpool symbol. */
6190 FOR_EACH_VARIABLE (v
)
6191 find_decls_types_in_var (v
, fld
);
6193 /* Set the assembler name on every decl found. We need to do this
6194 now because free_lang_data_in_decl will invalidate data needed
6195 for mangling. This breaks mangling on interdependent decls. */
6196 FOR_EACH_VEC_ELT (fld
->decls
, i
, t
)
6197 assign_assembler_name_if_needed (t
);
6199 /* Traverse every decl found freeing its language data. */
6200 FOR_EACH_VEC_ELT (fld
->decls
, i
, t
)
6201 free_lang_data_in_decl (t
, fld
);
6203 /* Traverse every type found freeing its language data. */
6204 FOR_EACH_VEC_ELT (fld
->types
, i
, t
)
6205 free_lang_data_in_type (t
, fld
);
6209 /* Free resources that are used by FE but are not needed once they are done. */
6212 free_lang_data (void)
6215 struct free_lang_data_d fld
;
6217 /* If we are the LTO frontend we have freed lang-specific data already. */
6219 || (!flag_generate_lto
&& !flag_generate_offload
))
6221 /* Rebuild type inheritance graph even when not doing LTO to get
6222 consistent profile data. */
6223 rebuild_type_inheritance_graph ();
6227 fld_incomplete_types
= new hash_map
<tree
, tree
>;
6228 fld_simplified_types
= new hash_map
<tree
, tree
>;
6230 /* Provide a dummy TRANSLATION_UNIT_DECL if the FE failed to provide one. */
6231 if (vec_safe_is_empty (all_translation_units
))
6232 build_translation_unit_decl (NULL_TREE
);
6234 /* Allocate and assign alias sets to the standard integer types
6235 while the slots are still in the way the frontends generated them. */
6236 for (i
= 0; i
< itk_none
; ++i
)
6237 if (integer_types
[i
])
6238 TYPE_ALIAS_SET (integer_types
[i
]) = get_alias_set (integer_types
[i
]);
6240 /* Traverse the IL resetting language specific information for
6241 operands, expressions, etc. */
6242 free_lang_data_in_cgraph (&fld
);
6244 /* Create gimple variants for common types. */
6245 for (unsigned i
= 0;
6246 i
< sizeof (builtin_structptr_types
) / sizeof (builtin_structptr_type
);
6248 builtin_structptr_types
[i
].node
= builtin_structptr_types
[i
].base
;
6250 /* Reset some langhooks. Do not reset types_compatible_p, it may
6251 still be used indirectly via the get_alias_set langhook. */
6252 lang_hooks
.dwarf_name
= lhd_dwarf_name
;
6253 lang_hooks
.decl_printable_name
= gimple_decl_printable_name
;
6254 lang_hooks
.gimplify_expr
= lhd_gimplify_expr
;
6255 lang_hooks
.overwrite_decl_assembler_name
= lhd_overwrite_decl_assembler_name
;
6256 lang_hooks
.print_xnode
= lhd_print_tree_nothing
;
6257 lang_hooks
.print_decl
= lhd_print_tree_nothing
;
6258 lang_hooks
.print_type
= lhd_print_tree_nothing
;
6259 lang_hooks
.print_identifier
= lhd_print_tree_nothing
;
6261 lang_hooks
.tree_inlining
.var_mod_type_p
= hook_bool_tree_tree_false
;
6268 FOR_EACH_VEC_ELT (fld
.types
, i
, t
)
6272 /* We do not want the default decl_assembler_name implementation,
6273 rather if we have fixed everything we want a wrapper around it
6274 asserting that all non-local symbols already got their assembler
6275 name and only produce assembler names for local symbols. Or rather
6276 make sure we never call decl_assembler_name on local symbols and
6277 devise a separate, middle-end private scheme for it. */
6279 /* Reset diagnostic machinery. */
6280 tree_diagnostics_defaults (global_dc
);
6282 rebuild_type_inheritance_graph ();
6284 delete fld_incomplete_types
;
6285 delete fld_simplified_types
;
6293 const pass_data pass_data_ipa_free_lang_data
=
6295 SIMPLE_IPA_PASS
, /* type */
6296 "*free_lang_data", /* name */
6297 OPTGROUP_NONE
, /* optinfo_flags */
6298 TV_IPA_FREE_LANG_DATA
, /* tv_id */
6299 0, /* properties_required */
6300 0, /* properties_provided */
6301 0, /* properties_destroyed */
6302 0, /* todo_flags_start */
6303 0, /* todo_flags_finish */
6306 class pass_ipa_free_lang_data
: public simple_ipa_opt_pass
6309 pass_ipa_free_lang_data (gcc::context
*ctxt
)
6310 : simple_ipa_opt_pass (pass_data_ipa_free_lang_data
, ctxt
)
6313 /* opt_pass methods: */
6314 virtual unsigned int execute (function
*) { return free_lang_data (); }
6316 }; // class pass_ipa_free_lang_data
6320 simple_ipa_opt_pass
*
6321 make_pass_ipa_free_lang_data (gcc::context
*ctxt
)
6323 return new pass_ipa_free_lang_data (ctxt
);
6326 /* Set the type qualifiers for TYPE to TYPE_QUALS, which is a bitmask
6327 of the various TYPE_QUAL values. */
6330 set_type_quals (tree type
, int type_quals
)
6332 TYPE_READONLY (type
) = (type_quals
& TYPE_QUAL_CONST
) != 0;
6333 TYPE_VOLATILE (type
) = (type_quals
& TYPE_QUAL_VOLATILE
) != 0;
6334 TYPE_RESTRICT (type
) = (type_quals
& TYPE_QUAL_RESTRICT
) != 0;
6335 TYPE_ATOMIC (type
) = (type_quals
& TYPE_QUAL_ATOMIC
) != 0;
6336 TYPE_ADDR_SPACE (type
) = DECODE_QUAL_ADDR_SPACE (type_quals
);
6339 /* Returns true iff CAND and BASE have equivalent language-specific
6343 check_lang_type (const_tree cand
, const_tree base
)
6345 if (lang_hooks
.types
.type_hash_eq
== NULL
)
6347 /* type_hash_eq currently only applies to these types. */
6348 if (TREE_CODE (cand
) != FUNCTION_TYPE
6349 && TREE_CODE (cand
) != METHOD_TYPE
)
6351 return lang_hooks
.types
.type_hash_eq (cand
, base
);
6354 /* This function checks to see if TYPE matches the size one of the built-in
6355 atomic types, and returns that core atomic type. */
6358 find_atomic_core_type (const_tree type
)
6360 tree base_atomic_type
;
6362 /* Only handle complete types. */
6363 if (!tree_fits_uhwi_p (TYPE_SIZE (type
)))
6366 switch (tree_to_uhwi (TYPE_SIZE (type
)))
6369 base_atomic_type
= atomicQI_type_node
;
6373 base_atomic_type
= atomicHI_type_node
;
6377 base_atomic_type
= atomicSI_type_node
;
6381 base_atomic_type
= atomicDI_type_node
;
6385 base_atomic_type
= atomicTI_type_node
;
6389 base_atomic_type
= NULL_TREE
;
6392 return base_atomic_type
;
6395 /* Returns true iff unqualified CAND and BASE are equivalent. */
6398 check_base_type (const_tree cand
, const_tree base
)
6400 if (TYPE_NAME (cand
) != TYPE_NAME (base
)
6401 /* Apparently this is needed for Objective-C. */
6402 || TYPE_CONTEXT (cand
) != TYPE_CONTEXT (base
)
6403 || !attribute_list_equal (TYPE_ATTRIBUTES (cand
),
6404 TYPE_ATTRIBUTES (base
)))
6406 /* Check alignment. */
6407 if (TYPE_ALIGN (cand
) == TYPE_ALIGN (base
))
6409 /* Atomic types increase minimal alignment. We must to do so as well
6410 or we get duplicated canonical types. See PR88686. */
6411 if ((TYPE_QUALS (cand
) & TYPE_QUAL_ATOMIC
))
6413 /* See if this object can map to a basic atomic type. */
6414 tree atomic_type
= find_atomic_core_type (cand
);
6415 if (atomic_type
&& TYPE_ALIGN (atomic_type
) == TYPE_ALIGN (cand
))
6421 /* Returns true iff CAND is equivalent to BASE with TYPE_QUALS. */
6424 check_qualified_type (const_tree cand
, const_tree base
, int type_quals
)
6426 return (TYPE_QUALS (cand
) == type_quals
6427 && check_base_type (cand
, base
)
6428 && check_lang_type (cand
, base
));
6431 /* Returns true iff CAND is equivalent to BASE with ALIGN. */
6434 check_aligned_type (const_tree cand
, const_tree base
, unsigned int align
)
6436 return (TYPE_QUALS (cand
) == TYPE_QUALS (base
)
6437 && TYPE_NAME (cand
) == TYPE_NAME (base
)
6438 /* Apparently this is needed for Objective-C. */
6439 && TYPE_CONTEXT (cand
) == TYPE_CONTEXT (base
)
6440 /* Check alignment. */
6441 && TYPE_ALIGN (cand
) == align
6442 && attribute_list_equal (TYPE_ATTRIBUTES (cand
),
6443 TYPE_ATTRIBUTES (base
))
6444 && check_lang_type (cand
, base
));
6447 /* Return a version of the TYPE, qualified as indicated by the
6448 TYPE_QUALS, if one exists. If no qualified version exists yet,
6449 return NULL_TREE. */
6452 get_qualified_type (tree type
, int type_quals
)
6456 if (TYPE_QUALS (type
) == type_quals
)
6459 /* Search the chain of variants to see if there is already one there just
6460 like the one we need to have. If so, use that existing one. We must
6461 preserve the TYPE_NAME, since there is code that depends on this. */
6462 for (t
= TYPE_MAIN_VARIANT (type
); t
; t
= TYPE_NEXT_VARIANT (t
))
6463 if (check_qualified_type (t
, type
, type_quals
))
6469 /* Like get_qualified_type, but creates the type if it does not
6470 exist. This function never returns NULL_TREE. */
6473 build_qualified_type (tree type
, int type_quals MEM_STAT_DECL
)
6477 /* See if we already have the appropriate qualified variant. */
6478 t
= get_qualified_type (type
, type_quals
);
6480 /* If not, build it. */
6483 t
= build_variant_type_copy (type PASS_MEM_STAT
);
6484 set_type_quals (t
, type_quals
);
6486 if (((type_quals
& TYPE_QUAL_ATOMIC
) == TYPE_QUAL_ATOMIC
))
6488 /* See if this object can map to a basic atomic type. */
6489 tree atomic_type
= find_atomic_core_type (type
);
6492 /* Ensure the alignment of this type is compatible with
6493 the required alignment of the atomic type. */
6494 if (TYPE_ALIGN (atomic_type
) > TYPE_ALIGN (t
))
6495 SET_TYPE_ALIGN (t
, TYPE_ALIGN (atomic_type
));
6499 if (TYPE_STRUCTURAL_EQUALITY_P (type
))
6500 /* Propagate structural equality. */
6501 SET_TYPE_STRUCTURAL_EQUALITY (t
);
6502 else if (TYPE_CANONICAL (type
) != type
)
6503 /* Build the underlying canonical type, since it is different
6506 tree c
= build_qualified_type (TYPE_CANONICAL (type
), type_quals
);
6507 TYPE_CANONICAL (t
) = TYPE_CANONICAL (c
);
6510 /* T is its own canonical type. */
6511 TYPE_CANONICAL (t
) = t
;
6518 /* Create a variant of type T with alignment ALIGN. */
6521 build_aligned_type (tree type
, unsigned int align
)
6525 if (TYPE_PACKED (type
)
6526 || TYPE_ALIGN (type
) == align
)
6529 for (t
= TYPE_MAIN_VARIANT (type
); t
; t
= TYPE_NEXT_VARIANT (t
))
6530 if (check_aligned_type (t
, type
, align
))
6533 t
= build_variant_type_copy (type
);
6534 SET_TYPE_ALIGN (t
, align
);
6535 TYPE_USER_ALIGN (t
) = 1;
6540 /* Create a new distinct copy of TYPE. The new type is made its own
6541 MAIN_VARIANT. If TYPE requires structural equality checks, the
6542 resulting type requires structural equality checks; otherwise, its
6543 TYPE_CANONICAL points to itself. */
6546 build_distinct_type_copy (tree type MEM_STAT_DECL
)
6548 tree t
= copy_node (type PASS_MEM_STAT
);
6550 TYPE_POINTER_TO (t
) = 0;
6551 TYPE_REFERENCE_TO (t
) = 0;
6553 /* Set the canonical type either to a new equivalence class, or
6554 propagate the need for structural equality checks. */
6555 if (TYPE_STRUCTURAL_EQUALITY_P (type
))
6556 SET_TYPE_STRUCTURAL_EQUALITY (t
);
6558 TYPE_CANONICAL (t
) = t
;
6560 /* Make it its own variant. */
6561 TYPE_MAIN_VARIANT (t
) = t
;
6562 TYPE_NEXT_VARIANT (t
) = 0;
6564 /* Note that it is now possible for TYPE_MIN_VALUE to be a value
6565 whose TREE_TYPE is not t. This can also happen in the Ada
6566 frontend when using subtypes. */
6571 /* Create a new variant of TYPE, equivalent but distinct. This is so
6572 the caller can modify it. TYPE_CANONICAL for the return type will
6573 be equivalent to TYPE_CANONICAL of TYPE, indicating that the types
6574 are considered equal by the language itself (or that both types
6575 require structural equality checks). */
6578 build_variant_type_copy (tree type MEM_STAT_DECL
)
6580 tree t
, m
= TYPE_MAIN_VARIANT (type
);
6582 t
= build_distinct_type_copy (type PASS_MEM_STAT
);
6584 /* Since we're building a variant, assume that it is a non-semantic
6585 variant. This also propagates TYPE_STRUCTURAL_EQUALITY_P. */
6586 TYPE_CANONICAL (t
) = TYPE_CANONICAL (type
);
6587 /* Type variants have no alias set defined. */
6588 TYPE_ALIAS_SET (t
) = -1;
6590 /* Add the new type to the chain of variants of TYPE. */
6591 TYPE_NEXT_VARIANT (t
) = TYPE_NEXT_VARIANT (m
);
6592 TYPE_NEXT_VARIANT (m
) = t
;
6593 TYPE_MAIN_VARIANT (t
) = m
;
6598 /* Return true if the from tree in both tree maps are equal. */
6601 tree_map_base_eq (const void *va
, const void *vb
)
6603 const struct tree_map_base
*const a
= (const struct tree_map_base
*) va
,
6604 *const b
= (const struct tree_map_base
*) vb
;
6605 return (a
->from
== b
->from
);
6608 /* Hash a from tree in a tree_base_map. */
6611 tree_map_base_hash (const void *item
)
6613 return htab_hash_pointer (((const struct tree_map_base
*)item
)->from
);
6616 /* Return true if this tree map structure is marked for garbage collection
6617 purposes. We simply return true if the from tree is marked, so that this
6618 structure goes away when the from tree goes away. */
6621 tree_map_base_marked_p (const void *p
)
6623 return ggc_marked_p (((const struct tree_map_base
*) p
)->from
);
6626 /* Hash a from tree in a tree_map. */
6629 tree_map_hash (const void *item
)
6631 return (((const struct tree_map
*) item
)->hash
);
6634 /* Hash a from tree in a tree_decl_map. */
6637 tree_decl_map_hash (const void *item
)
6639 return DECL_UID (((const struct tree_decl_map
*) item
)->base
.from
);
6642 /* Return the initialization priority for DECL. */
6645 decl_init_priority_lookup (tree decl
)
6647 symtab_node
*snode
= symtab_node::get (decl
);
6650 return DEFAULT_INIT_PRIORITY
;
6652 snode
->get_init_priority ();
6655 /* Return the finalization priority for DECL. */
6658 decl_fini_priority_lookup (tree decl
)
6660 cgraph_node
*node
= cgraph_node::get (decl
);
6663 return DEFAULT_INIT_PRIORITY
;
6665 node
->get_fini_priority ();
6668 /* Set the initialization priority for DECL to PRIORITY. */
6671 decl_init_priority_insert (tree decl
, priority_type priority
)
6673 struct symtab_node
*snode
;
6675 if (priority
== DEFAULT_INIT_PRIORITY
)
6677 snode
= symtab_node::get (decl
);
6681 else if (VAR_P (decl
))
6682 snode
= varpool_node::get_create (decl
);
6684 snode
= cgraph_node::get_create (decl
);
6685 snode
->set_init_priority (priority
);
6688 /* Set the finalization priority for DECL to PRIORITY. */
6691 decl_fini_priority_insert (tree decl
, priority_type priority
)
6693 struct cgraph_node
*node
;
6695 if (priority
== DEFAULT_INIT_PRIORITY
)
6697 node
= cgraph_node::get (decl
);
6702 node
= cgraph_node::get_create (decl
);
6703 node
->set_fini_priority (priority
);
6706 /* Print out the statistics for the DECL_DEBUG_EXPR hash table. */
6709 print_debug_expr_statistics (void)
6711 fprintf (stderr
, "DECL_DEBUG_EXPR hash: size %ld, %ld elements, %f collisions\n",
6712 (long) debug_expr_for_decl
->size (),
6713 (long) debug_expr_for_decl
->elements (),
6714 debug_expr_for_decl
->collisions ());
6717 /* Print out the statistics for the DECL_VALUE_EXPR hash table. */
6720 print_value_expr_statistics (void)
6722 fprintf (stderr
, "DECL_VALUE_EXPR hash: size %ld, %ld elements, %f collisions\n",
6723 (long) value_expr_for_decl
->size (),
6724 (long) value_expr_for_decl
->elements (),
6725 value_expr_for_decl
->collisions ());
6728 /* Lookup a debug expression for FROM, and return it if we find one. */
6731 decl_debug_expr_lookup (tree from
)
6733 struct tree_decl_map
*h
, in
;
6734 in
.base
.from
= from
;
6736 h
= debug_expr_for_decl
->find_with_hash (&in
, DECL_UID (from
));
6742 /* Insert a mapping FROM->TO in the debug expression hashtable. */
6745 decl_debug_expr_insert (tree from
, tree to
)
6747 struct tree_decl_map
*h
;
6749 h
= ggc_alloc
<tree_decl_map
> ();
6750 h
->base
.from
= from
;
6752 *debug_expr_for_decl
->find_slot_with_hash (h
, DECL_UID (from
), INSERT
) = h
;
6755 /* Lookup a value expression for FROM, and return it if we find one. */
6758 decl_value_expr_lookup (tree from
)
6760 struct tree_decl_map
*h
, in
;
6761 in
.base
.from
= from
;
6763 h
= value_expr_for_decl
->find_with_hash (&in
, DECL_UID (from
));
6769 /* Insert a mapping FROM->TO in the value expression hashtable. */
6772 decl_value_expr_insert (tree from
, tree to
)
6774 struct tree_decl_map
*h
;
6776 h
= ggc_alloc
<tree_decl_map
> ();
6777 h
->base
.from
= from
;
6779 *value_expr_for_decl
->find_slot_with_hash (h
, DECL_UID (from
), INSERT
) = h
;
6782 /* Lookup a vector of debug arguments for FROM, and return it if we
6786 decl_debug_args_lookup (tree from
)
6788 struct tree_vec_map
*h
, in
;
6790 if (!DECL_HAS_DEBUG_ARGS_P (from
))
6792 gcc_checking_assert (debug_args_for_decl
!= NULL
);
6793 in
.base
.from
= from
;
6794 h
= debug_args_for_decl
->find_with_hash (&in
, DECL_UID (from
));
6800 /* Insert a mapping FROM->empty vector of debug arguments in the value
6801 expression hashtable. */
6804 decl_debug_args_insert (tree from
)
6806 struct tree_vec_map
*h
;
6809 if (DECL_HAS_DEBUG_ARGS_P (from
))
6810 return decl_debug_args_lookup (from
);
6811 if (debug_args_for_decl
== NULL
)
6812 debug_args_for_decl
= hash_table
<tree_vec_map_cache_hasher
>::create_ggc (64);
6813 h
= ggc_alloc
<tree_vec_map
> ();
6814 h
->base
.from
= from
;
6816 loc
= debug_args_for_decl
->find_slot_with_hash (h
, DECL_UID (from
), INSERT
);
6818 DECL_HAS_DEBUG_ARGS_P (from
) = 1;
6822 /* Hashing of types so that we don't make duplicates.
6823 The entry point is `type_hash_canon'. */
6825 /* Generate the default hash code for TYPE. This is designed for
6826 speed, rather than maximum entropy. */
6829 type_hash_canon_hash (tree type
)
6831 inchash::hash hstate
;
6833 hstate
.add_int (TREE_CODE (type
));
6835 if (TREE_TYPE (type
))
6836 hstate
.add_object (TYPE_HASH (TREE_TYPE (type
)));
6838 for (tree t
= TYPE_ATTRIBUTES (type
); t
; t
= TREE_CHAIN (t
))
6839 /* Just the identifier is adequate to distinguish. */
6840 hstate
.add_object (IDENTIFIER_HASH_VALUE (get_attribute_name (t
)));
6842 switch (TREE_CODE (type
))
6845 hstate
.add_object (TYPE_HASH (TYPE_METHOD_BASETYPE (type
)));
6848 for (tree t
= TYPE_ARG_TYPES (type
); t
; t
= TREE_CHAIN (t
))
6849 if (TREE_VALUE (t
) != error_mark_node
)
6850 hstate
.add_object (TYPE_HASH (TREE_VALUE (t
)));
6854 hstate
.add_object (TYPE_HASH (TYPE_OFFSET_BASETYPE (type
)));
6859 if (TYPE_DOMAIN (type
))
6860 hstate
.add_object (TYPE_HASH (TYPE_DOMAIN (type
)));
6861 if (!AGGREGATE_TYPE_P (TREE_TYPE (type
)))
6863 unsigned typeless
= TYPE_TYPELESS_STORAGE (type
);
6864 hstate
.add_object (typeless
);
6871 tree t
= TYPE_MAX_VALUE (type
);
6873 t
= TYPE_MIN_VALUE (type
);
6874 for (int i
= 0; i
< TREE_INT_CST_NUNITS (t
); i
++)
6875 hstate
.add_object (TREE_INT_CST_ELT (t
, i
));
6880 case FIXED_POINT_TYPE
:
6882 unsigned prec
= TYPE_PRECISION (type
);
6883 hstate
.add_object (prec
);
6888 hstate
.add_poly_int (TYPE_VECTOR_SUBPARTS (type
));
6895 return hstate
.end ();
6898 /* These are the Hashtable callback functions. */
6900 /* Returns true iff the types are equivalent. */
6903 type_cache_hasher::equal (type_hash
*a
, type_hash
*b
)
6905 /* First test the things that are the same for all types. */
6906 if (a
->hash
!= b
->hash
6907 || TREE_CODE (a
->type
) != TREE_CODE (b
->type
)
6908 || TREE_TYPE (a
->type
) != TREE_TYPE (b
->type
)
6909 || !attribute_list_equal (TYPE_ATTRIBUTES (a
->type
),
6910 TYPE_ATTRIBUTES (b
->type
))
6911 || (TREE_CODE (a
->type
) != COMPLEX_TYPE
6912 && TYPE_NAME (a
->type
) != TYPE_NAME (b
->type
)))
6915 /* Be careful about comparing arrays before and after the element type
6916 has been completed; don't compare TYPE_ALIGN unless both types are
6918 if (COMPLETE_TYPE_P (a
->type
) && COMPLETE_TYPE_P (b
->type
)
6919 && (TYPE_ALIGN (a
->type
) != TYPE_ALIGN (b
->type
)
6920 || TYPE_MODE (a
->type
) != TYPE_MODE (b
->type
)))
6923 switch (TREE_CODE (a
->type
))
6928 case REFERENCE_TYPE
:
6933 return known_eq (TYPE_VECTOR_SUBPARTS (a
->type
),
6934 TYPE_VECTOR_SUBPARTS (b
->type
));
6937 if (TYPE_VALUES (a
->type
) != TYPE_VALUES (b
->type
)
6938 && !(TYPE_VALUES (a
->type
)
6939 && TREE_CODE (TYPE_VALUES (a
->type
)) == TREE_LIST
6940 && TYPE_VALUES (b
->type
)
6941 && TREE_CODE (TYPE_VALUES (b
->type
)) == TREE_LIST
6942 && type_list_equal (TYPE_VALUES (a
->type
),
6943 TYPE_VALUES (b
->type
))))
6951 if (TYPE_PRECISION (a
->type
) != TYPE_PRECISION (b
->type
))
6953 return ((TYPE_MAX_VALUE (a
->type
) == TYPE_MAX_VALUE (b
->type
)
6954 || tree_int_cst_equal (TYPE_MAX_VALUE (a
->type
),
6955 TYPE_MAX_VALUE (b
->type
)))
6956 && (TYPE_MIN_VALUE (a
->type
) == TYPE_MIN_VALUE (b
->type
)
6957 || tree_int_cst_equal (TYPE_MIN_VALUE (a
->type
),
6958 TYPE_MIN_VALUE (b
->type
))));
6960 case FIXED_POINT_TYPE
:
6961 return TYPE_SATURATING (a
->type
) == TYPE_SATURATING (b
->type
);
6964 return TYPE_OFFSET_BASETYPE (a
->type
) == TYPE_OFFSET_BASETYPE (b
->type
);
6967 if (TYPE_METHOD_BASETYPE (a
->type
) == TYPE_METHOD_BASETYPE (b
->type
)
6968 && (TYPE_ARG_TYPES (a
->type
) == TYPE_ARG_TYPES (b
->type
)
6969 || (TYPE_ARG_TYPES (a
->type
)
6970 && TREE_CODE (TYPE_ARG_TYPES (a
->type
)) == TREE_LIST
6971 && TYPE_ARG_TYPES (b
->type
)
6972 && TREE_CODE (TYPE_ARG_TYPES (b
->type
)) == TREE_LIST
6973 && type_list_equal (TYPE_ARG_TYPES (a
->type
),
6974 TYPE_ARG_TYPES (b
->type
)))))
6978 /* Don't compare TYPE_TYPELESS_STORAGE flag on aggregates,
6979 where the flag should be inherited from the element type
6980 and can change after ARRAY_TYPEs are created; on non-aggregates
6981 compare it and hash it, scalars will never have that flag set
6982 and we need to differentiate between arrays created by different
6983 front-ends or middle-end created arrays. */
6984 return (TYPE_DOMAIN (a
->type
) == TYPE_DOMAIN (b
->type
)
6985 && (AGGREGATE_TYPE_P (TREE_TYPE (a
->type
))
6986 || (TYPE_TYPELESS_STORAGE (a
->type
)
6987 == TYPE_TYPELESS_STORAGE (b
->type
))));
6991 case QUAL_UNION_TYPE
:
6992 return (TYPE_FIELDS (a
->type
) == TYPE_FIELDS (b
->type
)
6993 || (TYPE_FIELDS (a
->type
)
6994 && TREE_CODE (TYPE_FIELDS (a
->type
)) == TREE_LIST
6995 && TYPE_FIELDS (b
->type
)
6996 && TREE_CODE (TYPE_FIELDS (b
->type
)) == TREE_LIST
6997 && type_list_equal (TYPE_FIELDS (a
->type
),
6998 TYPE_FIELDS (b
->type
))));
7001 if (TYPE_ARG_TYPES (a
->type
) == TYPE_ARG_TYPES (b
->type
)
7002 || (TYPE_ARG_TYPES (a
->type
)
7003 && TREE_CODE (TYPE_ARG_TYPES (a
->type
)) == TREE_LIST
7004 && TYPE_ARG_TYPES (b
->type
)
7005 && TREE_CODE (TYPE_ARG_TYPES (b
->type
)) == TREE_LIST
7006 && type_list_equal (TYPE_ARG_TYPES (a
->type
),
7007 TYPE_ARG_TYPES (b
->type
))))
7015 if (lang_hooks
.types
.type_hash_eq
!= NULL
)
7016 return lang_hooks
.types
.type_hash_eq (a
->type
, b
->type
);
7021 /* Given TYPE, and HASHCODE its hash code, return the canonical
7022 object for an identical type if one already exists.
7023 Otherwise, return TYPE, and record it as the canonical object.
7025 To use this function, first create a type of the sort you want.
7026 Then compute its hash code from the fields of the type that
7027 make it different from other similar types.
7028 Then call this function and use the value. */
7031 type_hash_canon (unsigned int hashcode
, tree type
)
7036 /* The hash table only contains main variants, so ensure that's what we're
7038 gcc_assert (TYPE_MAIN_VARIANT (type
) == type
);
7040 /* The TYPE_ALIGN field of a type is set by layout_type(), so we
7041 must call that routine before comparing TYPE_ALIGNs. */
7047 loc
= type_hash_table
->find_slot_with_hash (&in
, hashcode
, INSERT
);
7050 tree t1
= ((type_hash
*) *loc
)->type
;
7051 gcc_assert (TYPE_MAIN_VARIANT (t1
) == t1
7053 if (TYPE_UID (type
) + 1 == next_type_uid
)
7055 /* Free also min/max values and the cache for integer
7056 types. This can't be done in free_node, as LTO frees
7057 those on its own. */
7058 if (TREE_CODE (type
) == INTEGER_TYPE
)
7060 if (TYPE_MIN_VALUE (type
)
7061 && TREE_TYPE (TYPE_MIN_VALUE (type
)) == type
)
7063 /* Zero is always in TYPE_CACHED_VALUES. */
7064 if (! TYPE_UNSIGNED (type
))
7065 int_cst_hash_table
->remove_elt (TYPE_MIN_VALUE (type
));
7066 ggc_free (TYPE_MIN_VALUE (type
));
7068 if (TYPE_MAX_VALUE (type
)
7069 && TREE_TYPE (TYPE_MAX_VALUE (type
)) == type
)
7071 int_cst_hash_table
->remove_elt (TYPE_MAX_VALUE (type
));
7072 ggc_free (TYPE_MAX_VALUE (type
));
7074 if (TYPE_CACHED_VALUES_P (type
))
7075 ggc_free (TYPE_CACHED_VALUES (type
));
7082 struct type_hash
*h
;
7084 h
= ggc_alloc
<type_hash
> ();
7094 print_type_hash_statistics (void)
7096 fprintf (stderr
, "Type hash: size %ld, %ld elements, %f collisions\n",
7097 (long) type_hash_table
->size (),
7098 (long) type_hash_table
->elements (),
7099 type_hash_table
->collisions ());
7102 /* Given two lists of types
7103 (chains of TREE_LIST nodes with types in the TREE_VALUE slots)
7104 return 1 if the lists contain the same types in the same order.
7105 Also, the TREE_PURPOSEs must match. */
7108 type_list_equal (const_tree l1
, const_tree l2
)
7112 for (t1
= l1
, t2
= l2
; t1
&& t2
; t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
))
7113 if (TREE_VALUE (t1
) != TREE_VALUE (t2
)
7114 || (TREE_PURPOSE (t1
) != TREE_PURPOSE (t2
)
7115 && ! (1 == simple_cst_equal (TREE_PURPOSE (t1
), TREE_PURPOSE (t2
))
7116 && (TREE_TYPE (TREE_PURPOSE (t1
))
7117 == TREE_TYPE (TREE_PURPOSE (t2
))))))
7123 /* Returns the number of arguments to the FUNCTION_TYPE or METHOD_TYPE
7124 given by TYPE. If the argument list accepts variable arguments,
7125 then this function counts only the ordinary arguments. */
7128 type_num_arguments (const_tree fntype
)
7132 for (tree t
= TYPE_ARG_TYPES (fntype
); t
; t
= TREE_CHAIN (t
))
7133 /* If the function does not take a variable number of arguments,
7134 the last element in the list will have type `void'. */
7135 if (VOID_TYPE_P (TREE_VALUE (t
)))
7143 /* Return the type of the function TYPE's argument ARGNO if known.
7144 For vararg function's where ARGNO refers to one of the variadic
7145 arguments return null. Otherwise, return a void_type_node for
7146 out-of-bounds ARGNO. */
7149 type_argument_type (const_tree fntype
, unsigned argno
)
7151 /* Treat zero the same as an out-of-bounds argument number. */
7153 return void_type_node
;
7155 function_args_iterator iter
;
7159 FOREACH_FUNCTION_ARGS (fntype
, argtype
, iter
)
7161 /* A vararg function's argument list ends in a null. Otherwise,
7162 an ordinary function's argument list ends with void. Return
7163 null if ARGNO refers to a vararg argument, void_type_node if
7164 it's out of bounds, and the formal argument type otherwise. */
7168 if (i
== argno
|| VOID_TYPE_P (argtype
))
7177 /* Nonzero if integer constants T1 and T2
7178 represent the same constant value. */
7181 tree_int_cst_equal (const_tree t1
, const_tree t2
)
7186 if (t1
== 0 || t2
== 0)
7189 STRIP_ANY_LOCATION_WRAPPER (t1
);
7190 STRIP_ANY_LOCATION_WRAPPER (t2
);
7192 if (TREE_CODE (t1
) == INTEGER_CST
7193 && TREE_CODE (t2
) == INTEGER_CST
7194 && wi::to_widest (t1
) == wi::to_widest (t2
))
7200 /* Return true if T is an INTEGER_CST whose numerical value (extended
7201 according to TYPE_UNSIGNED) fits in a signed HOST_WIDE_INT. */
7204 tree_fits_shwi_p (const_tree t
)
7206 return (t
!= NULL_TREE
7207 && TREE_CODE (t
) == INTEGER_CST
7208 && wi::fits_shwi_p (wi::to_widest (t
)));
7211 /* Return true if T is an INTEGER_CST or POLY_INT_CST whose numerical
7212 value (extended according to TYPE_UNSIGNED) fits in a poly_int64. */
7215 tree_fits_poly_int64_p (const_tree t
)
7219 if (POLY_INT_CST_P (t
))
7221 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; i
++)
7222 if (!wi::fits_shwi_p (wi::to_wide (POLY_INT_CST_COEFF (t
, i
))))
7226 return (TREE_CODE (t
) == INTEGER_CST
7227 && wi::fits_shwi_p (wi::to_widest (t
)));
7230 /* Return true if T is an INTEGER_CST whose numerical value (extended
7231 according to TYPE_UNSIGNED) fits in an unsigned HOST_WIDE_INT. */
7234 tree_fits_uhwi_p (const_tree t
)
7236 return (t
!= NULL_TREE
7237 && TREE_CODE (t
) == INTEGER_CST
7238 && wi::fits_uhwi_p (wi::to_widest (t
)));
7241 /* Return true if T is an INTEGER_CST or POLY_INT_CST whose numerical
7242 value (extended according to TYPE_UNSIGNED) fits in a poly_uint64. */
7245 tree_fits_poly_uint64_p (const_tree t
)
7249 if (POLY_INT_CST_P (t
))
7251 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; i
++)
7252 if (!wi::fits_uhwi_p (wi::to_widest (POLY_INT_CST_COEFF (t
, i
))))
7256 return (TREE_CODE (t
) == INTEGER_CST
7257 && wi::fits_uhwi_p (wi::to_widest (t
)));
7260 /* T is an INTEGER_CST whose numerical value (extended according to
7261 TYPE_UNSIGNED) fits in a signed HOST_WIDE_INT. Return that
7265 tree_to_shwi (const_tree t
)
7267 gcc_assert (tree_fits_shwi_p (t
));
7268 return TREE_INT_CST_LOW (t
);
7271 /* T is an INTEGER_CST whose numerical value (extended according to
7272 TYPE_UNSIGNED) fits in an unsigned HOST_WIDE_INT. Return that
7275 unsigned HOST_WIDE_INT
7276 tree_to_uhwi (const_tree t
)
7278 gcc_assert (tree_fits_uhwi_p (t
));
7279 return TREE_INT_CST_LOW (t
);
7282 /* Return the most significant (sign) bit of T. */
7285 tree_int_cst_sign_bit (const_tree t
)
7287 unsigned bitno
= TYPE_PRECISION (TREE_TYPE (t
)) - 1;
7289 return wi::extract_uhwi (wi::to_wide (t
), bitno
, 1);
7292 /* Return an indication of the sign of the integer constant T.
7293 The return value is -1 if T < 0, 0 if T == 0, and 1 if T > 0.
7294 Note that -1 will never be returned if T's type is unsigned. */
7297 tree_int_cst_sgn (const_tree t
)
7299 if (wi::to_wide (t
) == 0)
7301 else if (TYPE_UNSIGNED (TREE_TYPE (t
)))
7303 else if (wi::neg_p (wi::to_wide (t
)))
7309 /* Return the minimum number of bits needed to represent VALUE in a
7310 signed or unsigned type, UNSIGNEDP says which. */
7313 tree_int_cst_min_precision (tree value
, signop sgn
)
7315 /* If the value is negative, compute its negative minus 1. The latter
7316 adjustment is because the absolute value of the largest negative value
7317 is one larger than the largest positive value. This is equivalent to
7318 a bit-wise negation, so use that operation instead. */
7320 if (tree_int_cst_sgn (value
) < 0)
7321 value
= fold_build1 (BIT_NOT_EXPR
, TREE_TYPE (value
), value
);
7323 /* Return the number of bits needed, taking into account the fact
7324 that we need one more bit for a signed than unsigned type.
7325 If value is 0 or -1, the minimum precision is 1 no matter
7326 whether unsignedp is true or false. */
7328 if (integer_zerop (value
))
7331 return tree_floor_log2 (value
) + 1 + (sgn
== SIGNED
? 1 : 0) ;
7334 /* Return truthvalue of whether T1 is the same tree structure as T2.
7335 Return 1 if they are the same.
7336 Return 0 if they are understandably different.
7337 Return -1 if either contains tree structure not understood by
7341 simple_cst_equal (const_tree t1
, const_tree t2
)
7343 enum tree_code code1
, code2
;
7349 if (t1
== 0 || t2
== 0)
7352 /* For location wrappers to be the same, they must be at the same
7353 source location (and wrap the same thing). */
7354 if (location_wrapper_p (t1
) && location_wrapper_p (t2
))
7356 if (EXPR_LOCATION (t1
) != EXPR_LOCATION (t2
))
7358 return simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7361 code1
= TREE_CODE (t1
);
7362 code2
= TREE_CODE (t2
);
7364 if (CONVERT_EXPR_CODE_P (code1
) || code1
== NON_LVALUE_EXPR
)
7366 if (CONVERT_EXPR_CODE_P (code2
)
7367 || code2
== NON_LVALUE_EXPR
)
7368 return simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7370 return simple_cst_equal (TREE_OPERAND (t1
, 0), t2
);
7373 else if (CONVERT_EXPR_CODE_P (code2
)
7374 || code2
== NON_LVALUE_EXPR
)
7375 return simple_cst_equal (t1
, TREE_OPERAND (t2
, 0));
7383 return wi::to_widest (t1
) == wi::to_widest (t2
);
7386 return real_identical (&TREE_REAL_CST (t1
), &TREE_REAL_CST (t2
));
7389 return FIXED_VALUES_IDENTICAL (TREE_FIXED_CST (t1
), TREE_FIXED_CST (t2
));
7392 return (TREE_STRING_LENGTH (t1
) == TREE_STRING_LENGTH (t2
)
7393 && ! memcmp (TREE_STRING_POINTER (t1
), TREE_STRING_POINTER (t2
),
7394 TREE_STRING_LENGTH (t1
)));
7398 unsigned HOST_WIDE_INT idx
;
7399 vec
<constructor_elt
, va_gc
> *v1
= CONSTRUCTOR_ELTS (t1
);
7400 vec
<constructor_elt
, va_gc
> *v2
= CONSTRUCTOR_ELTS (t2
);
7402 if (vec_safe_length (v1
) != vec_safe_length (v2
))
7405 for (idx
= 0; idx
< vec_safe_length (v1
); ++idx
)
7406 /* ??? Should we handle also fields here? */
7407 if (!simple_cst_equal ((*v1
)[idx
].value
, (*v2
)[idx
].value
))
7413 return simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7416 cmp
= simple_cst_equal (CALL_EXPR_FN (t1
), CALL_EXPR_FN (t2
));
7419 if (call_expr_nargs (t1
) != call_expr_nargs (t2
))
7422 const_tree arg1
, arg2
;
7423 const_call_expr_arg_iterator iter1
, iter2
;
7424 for (arg1
= first_const_call_expr_arg (t1
, &iter1
),
7425 arg2
= first_const_call_expr_arg (t2
, &iter2
);
7427 arg1
= next_const_call_expr_arg (&iter1
),
7428 arg2
= next_const_call_expr_arg (&iter2
))
7430 cmp
= simple_cst_equal (arg1
, arg2
);
7434 return arg1
== arg2
;
7438 /* Special case: if either target is an unallocated VAR_DECL,
7439 it means that it's going to be unified with whatever the
7440 TARGET_EXPR is really supposed to initialize, so treat it
7441 as being equivalent to anything. */
7442 if ((TREE_CODE (TREE_OPERAND (t1
, 0)) == VAR_DECL
7443 && DECL_NAME (TREE_OPERAND (t1
, 0)) == NULL_TREE
7444 && !DECL_RTL_SET_P (TREE_OPERAND (t1
, 0)))
7445 || (TREE_CODE (TREE_OPERAND (t2
, 0)) == VAR_DECL
7446 && DECL_NAME (TREE_OPERAND (t2
, 0)) == NULL_TREE
7447 && !DECL_RTL_SET_P (TREE_OPERAND (t2
, 0))))
7450 cmp
= simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7455 return simple_cst_equal (TREE_OPERAND (t1
, 1), TREE_OPERAND (t2
, 1));
7457 case WITH_CLEANUP_EXPR
:
7458 cmp
= simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7462 return simple_cst_equal (TREE_OPERAND (t1
, 1), TREE_OPERAND (t1
, 1));
7465 if (TREE_OPERAND (t1
, 1) == TREE_OPERAND (t2
, 1))
7466 return simple_cst_equal (TREE_OPERAND (t1
, 0), TREE_OPERAND (t2
, 0));
7477 if (POLY_INT_CST_P (t1
))
7478 /* A false return means maybe_ne rather than known_ne. */
7479 return known_eq (poly_widest_int::from (poly_int_cst_value (t1
),
7480 TYPE_SIGN (TREE_TYPE (t1
))),
7481 poly_widest_int::from (poly_int_cst_value (t2
),
7482 TYPE_SIGN (TREE_TYPE (t2
))));
7486 /* This general rule works for most tree codes. All exceptions should be
7487 handled above. If this is a language-specific tree code, we can't
7488 trust what might be in the operand, so say we don't know
7490 if ((int) code1
>= (int) LAST_AND_UNUSED_TREE_CODE
)
7493 switch (TREE_CODE_CLASS (code1
))
7497 case tcc_comparison
:
7498 case tcc_expression
:
7502 for (i
= 0; i
< TREE_CODE_LENGTH (code1
); i
++)
7504 cmp
= simple_cst_equal (TREE_OPERAND (t1
, i
), TREE_OPERAND (t2
, i
));
7516 /* Compare the value of T, an INTEGER_CST, with U, an unsigned integer value.
7517 Return -1, 0, or 1 if the value of T is less than, equal to, or greater
7518 than U, respectively. */
7521 compare_tree_int (const_tree t
, unsigned HOST_WIDE_INT u
)
7523 if (tree_int_cst_sgn (t
) < 0)
7525 else if (!tree_fits_uhwi_p (t
))
7527 else if (TREE_INT_CST_LOW (t
) == u
)
7529 else if (TREE_INT_CST_LOW (t
) < u
)
7535 /* Return true if SIZE represents a constant size that is in bounds of
7536 what the middle-end and the backend accepts (covering not more than
7537 half of the address-space).
7538 When PERR is non-null, set *PERR on failure to the description of
7539 why SIZE is not valid. */
7542 valid_constant_size_p (const_tree size
, cst_size_error
*perr
/* = NULL */)
7544 if (POLY_INT_CST_P (size
))
7546 if (TREE_OVERFLOW (size
))
7548 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
7549 if (!valid_constant_size_p (POLY_INT_CST_COEFF (size
, i
)))
7554 cst_size_error error
;
7558 if (TREE_CODE (size
) != INTEGER_CST
)
7560 *perr
= cst_size_not_constant
;
7564 if (TREE_OVERFLOW_P (size
))
7566 *perr
= cst_size_overflow
;
7570 if (tree_int_cst_sgn (size
) < 0)
7572 *perr
= cst_size_negative
;
7575 if (!tree_fits_uhwi_p (size
)
7576 || (wi::to_widest (TYPE_MAX_VALUE (sizetype
))
7577 < wi::to_widest (size
) * 2))
7579 *perr
= cst_size_too_big
;
7586 /* Return the precision of the type, or for a complex or vector type the
7587 precision of the type of its elements. */
7590 element_precision (const_tree type
)
7593 type
= TREE_TYPE (type
);
7594 enum tree_code code
= TREE_CODE (type
);
7595 if (code
== COMPLEX_TYPE
|| code
== VECTOR_TYPE
)
7596 type
= TREE_TYPE (type
);
7598 return TYPE_PRECISION (type
);
7601 /* Return true if CODE represents an associative tree code. Otherwise
7604 associative_tree_code (enum tree_code code
)
7623 /* Return true if CODE represents a commutative tree code. Otherwise
7626 commutative_tree_code (enum tree_code code
)
7632 case MULT_HIGHPART_EXPR
:
7640 case UNORDERED_EXPR
:
7644 case TRUTH_AND_EXPR
:
7645 case TRUTH_XOR_EXPR
:
7647 case WIDEN_MULT_EXPR
:
7648 case VEC_WIDEN_MULT_HI_EXPR
:
7649 case VEC_WIDEN_MULT_LO_EXPR
:
7650 case VEC_WIDEN_MULT_EVEN_EXPR
:
7651 case VEC_WIDEN_MULT_ODD_EXPR
:
7660 /* Return true if CODE represents a ternary tree code for which the
7661 first two operands are commutative. Otherwise return false. */
7663 commutative_ternary_tree_code (enum tree_code code
)
7667 case WIDEN_MULT_PLUS_EXPR
:
7668 case WIDEN_MULT_MINUS_EXPR
:
7678 /* Returns true if CODE can overflow. */
7681 operation_can_overflow (enum tree_code code
)
7689 /* Can overflow in various ways. */
7691 case TRUNC_DIV_EXPR
:
7692 case EXACT_DIV_EXPR
:
7693 case FLOOR_DIV_EXPR
:
7695 /* For INT_MIN / -1. */
7702 /* These operators cannot overflow. */
7707 /* Returns true if CODE operating on operands of type TYPE doesn't overflow, or
7708 ftrapv doesn't generate trapping insns for CODE. */
7711 operation_no_trapping_overflow (tree type
, enum tree_code code
)
7713 gcc_checking_assert (ANY_INTEGRAL_TYPE_P (type
));
7715 /* We don't generate instructions that trap on overflow for complex or vector
7717 if (!INTEGRAL_TYPE_P (type
))
7720 if (!TYPE_OVERFLOW_TRAPS (type
))
7730 /* These operators can overflow, and -ftrapv generates trapping code for
7733 case TRUNC_DIV_EXPR
:
7734 case EXACT_DIV_EXPR
:
7735 case FLOOR_DIV_EXPR
:
7738 /* These operators can overflow, but -ftrapv does not generate trapping
7742 /* These operators cannot overflow. */
7750 /* Generate a hash value for an expression. This can be used iteratively
7751 by passing a previous result as the HSTATE argument.
7753 This function is intended to produce the same hash for expressions which
7754 would compare equal using operand_equal_p. */
7756 add_expr (const_tree t
, inchash::hash
&hstate
, unsigned int flags
)
7759 enum tree_code code
;
7760 enum tree_code_class tclass
;
7762 if (t
== NULL_TREE
|| t
== error_mark_node
)
7764 hstate
.merge_hash (0);
7768 STRIP_ANY_LOCATION_WRAPPER (t
);
7770 if (!(flags
& OEP_ADDRESS_OF
))
7773 code
= TREE_CODE (t
);
7777 /* Alas, constants aren't shared, so we can't rely on pointer
7780 hstate
.merge_hash (0);
7783 gcc_checking_assert (!(flags
& OEP_ADDRESS_OF
));
7784 for (i
= 0; i
< TREE_INT_CST_EXT_NUNITS (t
); i
++)
7785 hstate
.add_hwi (TREE_INT_CST_ELT (t
, i
));
7790 if (!HONOR_SIGNED_ZEROS (t
) && real_zerop (t
))
7793 val2
= real_hash (TREE_REAL_CST_PTR (t
));
7794 hstate
.merge_hash (val2
);
7799 unsigned int val2
= fixed_hash (TREE_FIXED_CST_PTR (t
));
7800 hstate
.merge_hash (val2
);
7804 hstate
.add ((const void *) TREE_STRING_POINTER (t
),
7805 TREE_STRING_LENGTH (t
));
7808 inchash::add_expr (TREE_REALPART (t
), hstate
, flags
);
7809 inchash::add_expr (TREE_IMAGPART (t
), hstate
, flags
);
7813 hstate
.add_int (VECTOR_CST_NPATTERNS (t
));
7814 hstate
.add_int (VECTOR_CST_NELTS_PER_PATTERN (t
));
7815 unsigned int count
= vector_cst_encoded_nelts (t
);
7816 for (unsigned int i
= 0; i
< count
; ++i
)
7817 inchash::add_expr (VECTOR_CST_ENCODED_ELT (t
, i
), hstate
, flags
);
7821 /* We can just compare by pointer. */
7822 hstate
.add_hwi (SSA_NAME_VERSION (t
));
7824 case PLACEHOLDER_EXPR
:
7825 /* The node itself doesn't matter. */
7832 /* A list of expressions, for a CALL_EXPR or as the elements of a
7834 for (; t
; t
= TREE_CHAIN (t
))
7835 inchash::add_expr (TREE_VALUE (t
), hstate
, flags
);
7839 unsigned HOST_WIDE_INT idx
;
7841 flags
&= ~OEP_ADDRESS_OF
;
7842 FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (t
), idx
, field
, value
)
7844 inchash::add_expr (field
, hstate
, flags
);
7845 inchash::add_expr (value
, hstate
, flags
);
7849 case STATEMENT_LIST
:
7851 tree_stmt_iterator i
;
7852 for (i
= tsi_start (CONST_CAST_TREE (t
));
7853 !tsi_end_p (i
); tsi_next (&i
))
7854 inchash::add_expr (tsi_stmt (i
), hstate
, flags
);
7858 for (i
= 0; i
< TREE_VEC_LENGTH (t
); ++i
)
7859 inchash::add_expr (TREE_VEC_ELT (t
, i
), hstate
, flags
);
7861 case IDENTIFIER_NODE
:
7862 hstate
.add_object (IDENTIFIER_HASH_VALUE (t
));
7865 /* When referring to a built-in FUNCTION_DECL, use the __builtin__ form.
7866 Otherwise nodes that compare equal according to operand_equal_p might
7867 get different hash codes. However, don't do this for machine specific
7868 or front end builtins, since the function code is overloaded in those
7870 if (DECL_BUILT_IN_CLASS (t
) == BUILT_IN_NORMAL
7871 && builtin_decl_explicit_p (DECL_FUNCTION_CODE (t
)))
7873 t
= builtin_decl_explicit (DECL_FUNCTION_CODE (t
));
7874 code
= TREE_CODE (t
);
7878 if (POLY_INT_CST_P (t
))
7880 for (unsigned int i
= 0; i
< NUM_POLY_INT_COEFFS
; ++i
)
7881 hstate
.add_wide_int (wi::to_wide (POLY_INT_CST_COEFF (t
, i
)));
7884 tclass
= TREE_CODE_CLASS (code
);
7886 if (tclass
== tcc_declaration
)
7888 /* DECL's have a unique ID */
7889 hstate
.add_hwi (DECL_UID (t
));
7891 else if (tclass
== tcc_comparison
&& !commutative_tree_code (code
))
7893 /* For comparisons that can be swapped, use the lower
7895 enum tree_code ccode
= swap_tree_comparison (code
);
7898 hstate
.add_object (ccode
);
7899 inchash::add_expr (TREE_OPERAND (t
, ccode
!= code
), hstate
, flags
);
7900 inchash::add_expr (TREE_OPERAND (t
, ccode
== code
), hstate
, flags
);
7902 else if (CONVERT_EXPR_CODE_P (code
))
7904 /* NOP_EXPR and CONVERT_EXPR are considered equal by
7906 enum tree_code ccode
= NOP_EXPR
;
7907 hstate
.add_object (ccode
);
7909 /* Don't hash the type, that can lead to having nodes which
7910 compare equal according to operand_equal_p, but which
7911 have different hash codes. Make sure to include signedness
7912 in the hash computation. */
7913 hstate
.add_int (TYPE_UNSIGNED (TREE_TYPE (t
)));
7914 inchash::add_expr (TREE_OPERAND (t
, 0), hstate
, flags
);
7916 /* For OEP_ADDRESS_OF, hash MEM_EXPR[&decl, 0] the same as decl. */
7917 else if (code
== MEM_REF
7918 && (flags
& OEP_ADDRESS_OF
) != 0
7919 && TREE_CODE (TREE_OPERAND (t
, 0)) == ADDR_EXPR
7920 && DECL_P (TREE_OPERAND (TREE_OPERAND (t
, 0), 0))
7921 && integer_zerop (TREE_OPERAND (t
, 1)))
7922 inchash::add_expr (TREE_OPERAND (TREE_OPERAND (t
, 0), 0),
7924 /* Don't ICE on FE specific trees, or their arguments etc.
7925 during operand_equal_p hash verification. */
7926 else if (!IS_EXPR_CODE_CLASS (tclass
))
7927 gcc_assert (flags
& OEP_HASH_CHECK
);
7930 unsigned int sflags
= flags
;
7932 hstate
.add_object (code
);
7937 gcc_checking_assert (!(flags
& OEP_ADDRESS_OF
));
7938 flags
|= OEP_ADDRESS_OF
;
7944 case TARGET_MEM_REF
:
7945 flags
&= ~OEP_ADDRESS_OF
;
7950 case ARRAY_RANGE_REF
:
7953 sflags
&= ~OEP_ADDRESS_OF
;
7957 flags
&= ~OEP_ADDRESS_OF
;
7960 case WIDEN_MULT_PLUS_EXPR
:
7961 case WIDEN_MULT_MINUS_EXPR
:
7963 /* The multiplication operands are commutative. */
7964 inchash::hash one
, two
;
7965 inchash::add_expr (TREE_OPERAND (t
, 0), one
, flags
);
7966 inchash::add_expr (TREE_OPERAND (t
, 1), two
, flags
);
7967 hstate
.add_commutative (one
, two
);
7968 inchash::add_expr (TREE_OPERAND (t
, 2), two
, flags
);
7973 if (CALL_EXPR_FN (t
) == NULL_TREE
)
7974 hstate
.add_int (CALL_EXPR_IFN (t
));
7978 /* For TARGET_EXPR, just hash on the TARGET_EXPR_SLOT.
7979 Usually different TARGET_EXPRs just should use
7980 different temporaries in their slots. */
7981 inchash::add_expr (TARGET_EXPR_SLOT (t
), hstate
, flags
);
7988 /* Don't hash the type, that can lead to having nodes which
7989 compare equal according to operand_equal_p, but which
7990 have different hash codes. */
7991 if (code
== NON_LVALUE_EXPR
)
7993 /* Make sure to include signness in the hash computation. */
7994 hstate
.add_int (TYPE_UNSIGNED (TREE_TYPE (t
)));
7995 inchash::add_expr (TREE_OPERAND (t
, 0), hstate
, flags
);
7998 else if (commutative_tree_code (code
))
8000 /* It's a commutative expression. We want to hash it the same
8001 however it appears. We do this by first hashing both operands
8002 and then rehashing based on the order of their independent
8004 inchash::hash one
, two
;
8005 inchash::add_expr (TREE_OPERAND (t
, 0), one
, flags
);
8006 inchash::add_expr (TREE_OPERAND (t
, 1), two
, flags
);
8007 hstate
.add_commutative (one
, two
);
8010 for (i
= TREE_OPERAND_LENGTH (t
) - 1; i
>= 0; --i
)
8011 inchash::add_expr (TREE_OPERAND (t
, i
), hstate
,
8012 i
== 0 ? flags
: sflags
);
8020 /* Constructors for pointer, array and function types.
8021 (RECORD_TYPE, UNION_TYPE and ENUMERAL_TYPE nodes are
8022 constructed by language-dependent code, not here.) */
8024 /* Construct, lay out and return the type of pointers to TO_TYPE with
8025 mode MODE. If CAN_ALIAS_ALL is TRUE, indicate this type can
8026 reference all of memory. If such a type has already been
8027 constructed, reuse it. */
8030 build_pointer_type_for_mode (tree to_type
, machine_mode mode
,
8034 bool could_alias
= can_alias_all
;
8036 if (to_type
== error_mark_node
)
8037 return error_mark_node
;
8039 /* If the pointed-to type has the may_alias attribute set, force
8040 a TYPE_REF_CAN_ALIAS_ALL pointer to be generated. */
8041 if (lookup_attribute ("may_alias", TYPE_ATTRIBUTES (to_type
)))
8042 can_alias_all
= true;
8044 /* In some cases, languages will have things that aren't a POINTER_TYPE
8045 (such as a RECORD_TYPE for fat pointers in Ada) as TYPE_POINTER_TO.
8046 In that case, return that type without regard to the rest of our
8049 ??? This is a kludge, but consistent with the way this function has
8050 always operated and there doesn't seem to be a good way to avoid this
8052 if (TYPE_POINTER_TO (to_type
) != 0
8053 && TREE_CODE (TYPE_POINTER_TO (to_type
)) != POINTER_TYPE
)
8054 return TYPE_POINTER_TO (to_type
);
8056 /* First, if we already have a type for pointers to TO_TYPE and it's
8057 the proper mode, use it. */
8058 for (t
= TYPE_POINTER_TO (to_type
); t
; t
= TYPE_NEXT_PTR_TO (t
))
8059 if (TYPE_MODE (t
) == mode
&& TYPE_REF_CAN_ALIAS_ALL (t
) == can_alias_all
)
8062 t
= make_node (POINTER_TYPE
);
8064 TREE_TYPE (t
) = to_type
;
8065 SET_TYPE_MODE (t
, mode
);
8066 TYPE_REF_CAN_ALIAS_ALL (t
) = can_alias_all
;
8067 TYPE_NEXT_PTR_TO (t
) = TYPE_POINTER_TO (to_type
);
8068 TYPE_POINTER_TO (to_type
) = t
;
8070 /* During LTO we do not set TYPE_CANONICAL of pointers and references. */
8071 if (TYPE_STRUCTURAL_EQUALITY_P (to_type
) || in_lto_p
)
8072 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8073 else if (TYPE_CANONICAL (to_type
) != to_type
|| could_alias
)
8075 = build_pointer_type_for_mode (TYPE_CANONICAL (to_type
),
8078 /* Lay out the type. This function has many callers that are concerned
8079 with expression-construction, and this simplifies them all. */
8085 /* By default build pointers in ptr_mode. */
8088 build_pointer_type (tree to_type
)
8090 addr_space_t as
= to_type
== error_mark_node
? ADDR_SPACE_GENERIC
8091 : TYPE_ADDR_SPACE (to_type
);
8092 machine_mode pointer_mode
= targetm
.addr_space
.pointer_mode (as
);
8093 return build_pointer_type_for_mode (to_type
, pointer_mode
, false);
8096 /* Same as build_pointer_type_for_mode, but for REFERENCE_TYPE. */
8099 build_reference_type_for_mode (tree to_type
, machine_mode mode
,
8103 bool could_alias
= can_alias_all
;
8105 if (to_type
== error_mark_node
)
8106 return error_mark_node
;
8108 /* If the pointed-to type has the may_alias attribute set, force
8109 a TYPE_REF_CAN_ALIAS_ALL pointer to be generated. */
8110 if (lookup_attribute ("may_alias", TYPE_ATTRIBUTES (to_type
)))
8111 can_alias_all
= true;
8113 /* In some cases, languages will have things that aren't a REFERENCE_TYPE
8114 (such as a RECORD_TYPE for fat pointers in Ada) as TYPE_REFERENCE_TO.
8115 In that case, return that type without regard to the rest of our
8118 ??? This is a kludge, but consistent with the way this function has
8119 always operated and there doesn't seem to be a good way to avoid this
8121 if (TYPE_REFERENCE_TO (to_type
) != 0
8122 && TREE_CODE (TYPE_REFERENCE_TO (to_type
)) != REFERENCE_TYPE
)
8123 return TYPE_REFERENCE_TO (to_type
);
8125 /* First, if we already have a type for pointers to TO_TYPE and it's
8126 the proper mode, use it. */
8127 for (t
= TYPE_REFERENCE_TO (to_type
); t
; t
= TYPE_NEXT_REF_TO (t
))
8128 if (TYPE_MODE (t
) == mode
&& TYPE_REF_CAN_ALIAS_ALL (t
) == can_alias_all
)
8131 t
= make_node (REFERENCE_TYPE
);
8133 TREE_TYPE (t
) = to_type
;
8134 SET_TYPE_MODE (t
, mode
);
8135 TYPE_REF_CAN_ALIAS_ALL (t
) = can_alias_all
;
8136 TYPE_NEXT_REF_TO (t
) = TYPE_REFERENCE_TO (to_type
);
8137 TYPE_REFERENCE_TO (to_type
) = t
;
8139 /* During LTO we do not set TYPE_CANONICAL of pointers and references. */
8140 if (TYPE_STRUCTURAL_EQUALITY_P (to_type
) || in_lto_p
)
8141 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8142 else if (TYPE_CANONICAL (to_type
) != to_type
|| could_alias
)
8144 = build_reference_type_for_mode (TYPE_CANONICAL (to_type
),
8153 /* Build the node for the type of references-to-TO_TYPE by default
8157 build_reference_type (tree to_type
)
8159 addr_space_t as
= to_type
== error_mark_node
? ADDR_SPACE_GENERIC
8160 : TYPE_ADDR_SPACE (to_type
);
8161 machine_mode pointer_mode
= targetm
.addr_space
.pointer_mode (as
);
8162 return build_reference_type_for_mode (to_type
, pointer_mode
, false);
8165 #define MAX_INT_CACHED_PREC \
8166 (HOST_BITS_PER_WIDE_INT > 64 ? HOST_BITS_PER_WIDE_INT : 64)
8167 static GTY(()) tree nonstandard_integer_type_cache
[2 * MAX_INT_CACHED_PREC
+ 2];
8169 /* Builds a signed or unsigned integer type of precision PRECISION.
8170 Used for C bitfields whose precision does not match that of
8171 built-in target types. */
8173 build_nonstandard_integer_type (unsigned HOST_WIDE_INT precision
,
8179 unsignedp
= MAX_INT_CACHED_PREC
+ 1;
8181 if (precision
<= MAX_INT_CACHED_PREC
)
8183 itype
= nonstandard_integer_type_cache
[precision
+ unsignedp
];
8188 itype
= make_node (INTEGER_TYPE
);
8189 TYPE_PRECISION (itype
) = precision
;
8192 fixup_unsigned_type (itype
);
8194 fixup_signed_type (itype
);
8198 inchash::hash hstate
;
8199 inchash::add_expr (TYPE_MAX_VALUE (itype
), hstate
);
8200 ret
= type_hash_canon (hstate
.end (), itype
);
8201 if (precision
<= MAX_INT_CACHED_PREC
)
8202 nonstandard_integer_type_cache
[precision
+ unsignedp
] = ret
;
8207 #define MAX_BOOL_CACHED_PREC \
8208 (HOST_BITS_PER_WIDE_INT > 64 ? HOST_BITS_PER_WIDE_INT : 64)
8209 static GTY(()) tree nonstandard_boolean_type_cache
[MAX_BOOL_CACHED_PREC
+ 1];
8211 /* Builds a boolean type of precision PRECISION.
8212 Used for boolean vectors to choose proper vector element size. */
8214 build_nonstandard_boolean_type (unsigned HOST_WIDE_INT precision
)
8218 if (precision
<= MAX_BOOL_CACHED_PREC
)
8220 type
= nonstandard_boolean_type_cache
[precision
];
8225 type
= make_node (BOOLEAN_TYPE
);
8226 TYPE_PRECISION (type
) = precision
;
8227 fixup_signed_type (type
);
8229 if (precision
<= MAX_INT_CACHED_PREC
)
8230 nonstandard_boolean_type_cache
[precision
] = type
;
8235 /* Create a range of some discrete type TYPE (an INTEGER_TYPE, ENUMERAL_TYPE
8236 or BOOLEAN_TYPE) with low bound LOWVAL and high bound HIGHVAL. If SHARED
8237 is true, reuse such a type that has already been constructed. */
8240 build_range_type_1 (tree type
, tree lowval
, tree highval
, bool shared
)
8242 tree itype
= make_node (INTEGER_TYPE
);
8244 TREE_TYPE (itype
) = type
;
8246 TYPE_MIN_VALUE (itype
) = fold_convert (type
, lowval
);
8247 TYPE_MAX_VALUE (itype
) = highval
? fold_convert (type
, highval
) : NULL
;
8249 TYPE_PRECISION (itype
) = TYPE_PRECISION (type
);
8250 SET_TYPE_MODE (itype
, TYPE_MODE (type
));
8251 TYPE_SIZE (itype
) = TYPE_SIZE (type
);
8252 TYPE_SIZE_UNIT (itype
) = TYPE_SIZE_UNIT (type
);
8253 SET_TYPE_ALIGN (itype
, TYPE_ALIGN (type
));
8254 TYPE_USER_ALIGN (itype
) = TYPE_USER_ALIGN (type
);
8255 SET_TYPE_WARN_IF_NOT_ALIGN (itype
, TYPE_WARN_IF_NOT_ALIGN (type
));
8260 if ((TYPE_MIN_VALUE (itype
)
8261 && TREE_CODE (TYPE_MIN_VALUE (itype
)) != INTEGER_CST
)
8262 || (TYPE_MAX_VALUE (itype
)
8263 && TREE_CODE (TYPE_MAX_VALUE (itype
)) != INTEGER_CST
))
8265 /* Since we cannot reliably merge this type, we need to compare it using
8266 structural equality checks. */
8267 SET_TYPE_STRUCTURAL_EQUALITY (itype
);
8271 hashval_t hash
= type_hash_canon_hash (itype
);
8272 itype
= type_hash_canon (hash
, itype
);
8277 /* Wrapper around build_range_type_1 with SHARED set to true. */
8280 build_range_type (tree type
, tree lowval
, tree highval
)
8282 return build_range_type_1 (type
, lowval
, highval
, true);
8285 /* Wrapper around build_range_type_1 with SHARED set to false. */
8288 build_nonshared_range_type (tree type
, tree lowval
, tree highval
)
8290 return build_range_type_1 (type
, lowval
, highval
, false);
8293 /* Create a type of integers to be the TYPE_DOMAIN of an ARRAY_TYPE.
8294 MAXVAL should be the maximum value in the domain
8295 (one less than the length of the array).
8297 The maximum value that MAXVAL can have is INT_MAX for a HOST_WIDE_INT.
8298 We don't enforce this limit, that is up to caller (e.g. language front end).
8299 The limit exists because the result is a signed type and we don't handle
8300 sizes that use more than one HOST_WIDE_INT. */
8303 build_index_type (tree maxval
)
8305 return build_range_type (sizetype
, size_zero_node
, maxval
);
8308 /* Return true if the debug information for TYPE, a subtype, should be emitted
8309 as a subrange type. If so, set LOWVAL to the low bound and HIGHVAL to the
8310 high bound, respectively. Sometimes doing so unnecessarily obfuscates the
8311 debug info and doesn't reflect the source code. */
8314 subrange_type_for_debug_p (const_tree type
, tree
*lowval
, tree
*highval
)
8316 tree base_type
= TREE_TYPE (type
), low
, high
;
8318 /* Subrange types have a base type which is an integral type. */
8319 if (!INTEGRAL_TYPE_P (base_type
))
8322 /* Get the real bounds of the subtype. */
8323 if (lang_hooks
.types
.get_subrange_bounds
)
8324 lang_hooks
.types
.get_subrange_bounds (type
, &low
, &high
);
8327 low
= TYPE_MIN_VALUE (type
);
8328 high
= TYPE_MAX_VALUE (type
);
8331 /* If the type and its base type have the same representation and the same
8332 name, then the type is not a subrange but a copy of the base type. */
8333 if ((TREE_CODE (base_type
) == INTEGER_TYPE
8334 || TREE_CODE (base_type
) == BOOLEAN_TYPE
)
8335 && int_size_in_bytes (type
) == int_size_in_bytes (base_type
)
8336 && tree_int_cst_equal (low
, TYPE_MIN_VALUE (base_type
))
8337 && tree_int_cst_equal (high
, TYPE_MAX_VALUE (base_type
))
8338 && TYPE_IDENTIFIER (type
) == TYPE_IDENTIFIER (base_type
))
8348 /* Construct, lay out and return the type of arrays of elements with ELT_TYPE
8349 and number of elements specified by the range of values of INDEX_TYPE.
8350 If TYPELESS_STORAGE is true, TYPE_TYPELESS_STORAGE flag is set on the type.
8351 If SHARED is true, reuse such a type that has already been constructed. */
8354 build_array_type_1 (tree elt_type
, tree index_type
, bool typeless_storage
,
8359 if (TREE_CODE (elt_type
) == FUNCTION_TYPE
)
8361 error ("arrays of functions are not meaningful");
8362 elt_type
= integer_type_node
;
8365 t
= make_node (ARRAY_TYPE
);
8366 TREE_TYPE (t
) = elt_type
;
8367 TYPE_DOMAIN (t
) = index_type
;
8368 TYPE_ADDR_SPACE (t
) = TYPE_ADDR_SPACE (elt_type
);
8369 TYPE_TYPELESS_STORAGE (t
) = typeless_storage
;
8372 /* If the element type is incomplete at this point we get marked for
8373 structural equality. Do not record these types in the canonical
8375 if (TYPE_STRUCTURAL_EQUALITY_P (t
))
8380 hashval_t hash
= type_hash_canon_hash (t
);
8381 t
= type_hash_canon (hash
, t
);
8384 if (TYPE_CANONICAL (t
) == t
)
8386 if (TYPE_STRUCTURAL_EQUALITY_P (elt_type
)
8387 || (index_type
&& TYPE_STRUCTURAL_EQUALITY_P (index_type
))
8389 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8390 else if (TYPE_CANONICAL (elt_type
) != elt_type
8391 || (index_type
&& TYPE_CANONICAL (index_type
) != index_type
))
8393 = build_array_type_1 (TYPE_CANONICAL (elt_type
),
8395 ? TYPE_CANONICAL (index_type
) : NULL_TREE
,
8396 typeless_storage
, shared
);
8402 /* Wrapper around build_array_type_1 with SHARED set to true. */
8405 build_array_type (tree elt_type
, tree index_type
, bool typeless_storage
)
8407 return build_array_type_1 (elt_type
, index_type
, typeless_storage
, true);
8410 /* Wrapper around build_array_type_1 with SHARED set to false. */
8413 build_nonshared_array_type (tree elt_type
, tree index_type
)
8415 return build_array_type_1 (elt_type
, index_type
, false, false);
8418 /* Return a representation of ELT_TYPE[NELTS], using indices of type
8422 build_array_type_nelts (tree elt_type
, poly_uint64 nelts
)
8424 return build_array_type (elt_type
, build_index_type (size_int (nelts
- 1)));
8427 /* Recursively examines the array elements of TYPE, until a non-array
8428 element type is found. */
8431 strip_array_types (tree type
)
8433 while (TREE_CODE (type
) == ARRAY_TYPE
)
8434 type
= TREE_TYPE (type
);
8439 /* Computes the canonical argument types from the argument type list
8442 Upon return, *ANY_STRUCTURAL_P will be true iff either it was true
8443 on entry to this function, or if any of the ARGTYPES are
8446 Upon return, *ANY_NONCANONICAL_P will be true iff either it was
8447 true on entry to this function, or if any of the ARGTYPES are
8450 Returns a canonical argument list, which may be ARGTYPES when the
8451 canonical argument list is unneeded (i.e., *ANY_STRUCTURAL_P is
8452 true) or would not differ from ARGTYPES. */
8455 maybe_canonicalize_argtypes (tree argtypes
,
8456 bool *any_structural_p
,
8457 bool *any_noncanonical_p
)
8460 bool any_noncanonical_argtypes_p
= false;
8462 for (arg
= argtypes
; arg
&& !(*any_structural_p
); arg
= TREE_CHAIN (arg
))
8464 if (!TREE_VALUE (arg
) || TREE_VALUE (arg
) == error_mark_node
)
8465 /* Fail gracefully by stating that the type is structural. */
8466 *any_structural_p
= true;
8467 else if (TYPE_STRUCTURAL_EQUALITY_P (TREE_VALUE (arg
)))
8468 *any_structural_p
= true;
8469 else if (TYPE_CANONICAL (TREE_VALUE (arg
)) != TREE_VALUE (arg
)
8470 || TREE_PURPOSE (arg
))
8471 /* If the argument has a default argument, we consider it
8472 non-canonical even though the type itself is canonical.
8473 That way, different variants of function and method types
8474 with default arguments will all point to the variant with
8475 no defaults as their canonical type. */
8476 any_noncanonical_argtypes_p
= true;
8479 if (*any_structural_p
)
8482 if (any_noncanonical_argtypes_p
)
8484 /* Build the canonical list of argument types. */
8485 tree canon_argtypes
= NULL_TREE
;
8486 bool is_void
= false;
8488 for (arg
= argtypes
; arg
; arg
= TREE_CHAIN (arg
))
8490 if (arg
== void_list_node
)
8493 canon_argtypes
= tree_cons (NULL_TREE
,
8494 TYPE_CANONICAL (TREE_VALUE (arg
)),
8498 canon_argtypes
= nreverse (canon_argtypes
);
8500 canon_argtypes
= chainon (canon_argtypes
, void_list_node
);
8502 /* There is a non-canonical type. */
8503 *any_noncanonical_p
= true;
8504 return canon_argtypes
;
8507 /* The canonical argument types are the same as ARGTYPES. */
8511 /* Construct, lay out and return
8512 the type of functions returning type VALUE_TYPE
8513 given arguments of types ARG_TYPES.
8514 ARG_TYPES is a chain of TREE_LIST nodes whose TREE_VALUEs
8515 are data type nodes for the arguments of the function.
8516 If such a type has already been constructed, reuse it. */
8519 build_function_type (tree value_type
, tree arg_types
)
8522 inchash::hash hstate
;
8523 bool any_structural_p
, any_noncanonical_p
;
8524 tree canon_argtypes
;
8526 gcc_assert (arg_types
!= error_mark_node
);
8528 if (TREE_CODE (value_type
) == FUNCTION_TYPE
)
8530 error ("function return type cannot be function");
8531 value_type
= integer_type_node
;
8534 /* Make a node of the sort we want. */
8535 t
= make_node (FUNCTION_TYPE
);
8536 TREE_TYPE (t
) = value_type
;
8537 TYPE_ARG_TYPES (t
) = arg_types
;
8539 /* If we already have such a type, use the old one. */
8540 hashval_t hash
= type_hash_canon_hash (t
);
8541 t
= type_hash_canon (hash
, t
);
8543 /* Set up the canonical type. */
8544 any_structural_p
= TYPE_STRUCTURAL_EQUALITY_P (value_type
);
8545 any_noncanonical_p
= TYPE_CANONICAL (value_type
) != value_type
;
8546 canon_argtypes
= maybe_canonicalize_argtypes (arg_types
,
8548 &any_noncanonical_p
);
8549 if (any_structural_p
)
8550 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8551 else if (any_noncanonical_p
)
8552 TYPE_CANONICAL (t
) = build_function_type (TYPE_CANONICAL (value_type
),
8555 if (!COMPLETE_TYPE_P (t
))
8560 /* Build a function type. The RETURN_TYPE is the type returned by the
8561 function. If VAARGS is set, no void_type_node is appended to the
8562 list. ARGP must be always be terminated be a NULL_TREE. */
8565 build_function_type_list_1 (bool vaargs
, tree return_type
, va_list argp
)
8569 t
= va_arg (argp
, tree
);
8570 for (args
= NULL_TREE
; t
!= NULL_TREE
; t
= va_arg (argp
, tree
))
8571 args
= tree_cons (NULL_TREE
, t
, args
);
8576 if (args
!= NULL_TREE
)
8577 args
= nreverse (args
);
8578 gcc_assert (last
!= void_list_node
);
8580 else if (args
== NULL_TREE
)
8581 args
= void_list_node
;
8585 args
= nreverse (args
);
8586 TREE_CHAIN (last
) = void_list_node
;
8588 args
= build_function_type (return_type
, args
);
8593 /* Build a function type. The RETURN_TYPE is the type returned by the
8594 function. If additional arguments are provided, they are
8595 additional argument types. The list of argument types must always
8596 be terminated by NULL_TREE. */
8599 build_function_type_list (tree return_type
, ...)
8604 va_start (p
, return_type
);
8605 args
= build_function_type_list_1 (false, return_type
, p
);
8610 /* Build a variable argument function type. The RETURN_TYPE is the
8611 type returned by the function. If additional arguments are provided,
8612 they are additional argument types. The list of argument types must
8613 always be terminated by NULL_TREE. */
8616 build_varargs_function_type_list (tree return_type
, ...)
8621 va_start (p
, return_type
);
8622 args
= build_function_type_list_1 (true, return_type
, p
);
8628 /* Build a function type. RETURN_TYPE is the type returned by the
8629 function; VAARGS indicates whether the function takes varargs. The
8630 function takes N named arguments, the types of which are provided in
8634 build_function_type_array_1 (bool vaargs
, tree return_type
, int n
,
8638 tree t
= vaargs
? NULL_TREE
: void_list_node
;
8640 for (i
= n
- 1; i
>= 0; i
--)
8641 t
= tree_cons (NULL_TREE
, arg_types
[i
], t
);
8643 return build_function_type (return_type
, t
);
8646 /* Build a function type. RETURN_TYPE is the type returned by the
8647 function. The function takes N named arguments, the types of which
8648 are provided in ARG_TYPES. */
8651 build_function_type_array (tree return_type
, int n
, tree
*arg_types
)
8653 return build_function_type_array_1 (false, return_type
, n
, arg_types
);
8656 /* Build a variable argument function type. RETURN_TYPE is the type
8657 returned by the function. The function takes N named arguments, the
8658 types of which are provided in ARG_TYPES. */
8661 build_varargs_function_type_array (tree return_type
, int n
, tree
*arg_types
)
8663 return build_function_type_array_1 (true, return_type
, n
, arg_types
);
8666 /* Build a METHOD_TYPE for a member of BASETYPE. The RETTYPE (a TYPE)
8667 and ARGTYPES (a TREE_LIST) are the return type and arguments types
8668 for the method. An implicit additional parameter (of type
8669 pointer-to-BASETYPE) is added to the ARGTYPES. */
8672 build_method_type_directly (tree basetype
,
8678 bool any_structural_p
, any_noncanonical_p
;
8679 tree canon_argtypes
;
8681 /* Make a node of the sort we want. */
8682 t
= make_node (METHOD_TYPE
);
8684 TYPE_METHOD_BASETYPE (t
) = TYPE_MAIN_VARIANT (basetype
);
8685 TREE_TYPE (t
) = rettype
;
8686 ptype
= build_pointer_type (basetype
);
8688 /* The actual arglist for this function includes a "hidden" argument
8689 which is "this". Put it into the list of argument types. */
8690 argtypes
= tree_cons (NULL_TREE
, ptype
, argtypes
);
8691 TYPE_ARG_TYPES (t
) = argtypes
;
8693 /* If we already have such a type, use the old one. */
8694 hashval_t hash
= type_hash_canon_hash (t
);
8695 t
= type_hash_canon (hash
, t
);
8697 /* Set up the canonical type. */
8699 = (TYPE_STRUCTURAL_EQUALITY_P (basetype
)
8700 || TYPE_STRUCTURAL_EQUALITY_P (rettype
));
8702 = (TYPE_CANONICAL (basetype
) != basetype
8703 || TYPE_CANONICAL (rettype
) != rettype
);
8704 canon_argtypes
= maybe_canonicalize_argtypes (TREE_CHAIN (argtypes
),
8706 &any_noncanonical_p
);
8707 if (any_structural_p
)
8708 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8709 else if (any_noncanonical_p
)
8711 = build_method_type_directly (TYPE_CANONICAL (basetype
),
8712 TYPE_CANONICAL (rettype
),
8714 if (!COMPLETE_TYPE_P (t
))
8720 /* Construct, lay out and return the type of methods belonging to class
8721 BASETYPE and whose arguments and values are described by TYPE.
8722 If that type exists already, reuse it.
8723 TYPE must be a FUNCTION_TYPE node. */
8726 build_method_type (tree basetype
, tree type
)
8728 gcc_assert (TREE_CODE (type
) == FUNCTION_TYPE
);
8730 return build_method_type_directly (basetype
,
8732 TYPE_ARG_TYPES (type
));
8735 /* Construct, lay out and return the type of offsets to a value
8736 of type TYPE, within an object of type BASETYPE.
8737 If a suitable offset type exists already, reuse it. */
8740 build_offset_type (tree basetype
, tree type
)
8744 /* Make a node of the sort we want. */
8745 t
= make_node (OFFSET_TYPE
);
8747 TYPE_OFFSET_BASETYPE (t
) = TYPE_MAIN_VARIANT (basetype
);
8748 TREE_TYPE (t
) = type
;
8750 /* If we already have such a type, use the old one. */
8751 hashval_t hash
= type_hash_canon_hash (t
);
8752 t
= type_hash_canon (hash
, t
);
8754 if (!COMPLETE_TYPE_P (t
))
8757 if (TYPE_CANONICAL (t
) == t
)
8759 if (TYPE_STRUCTURAL_EQUALITY_P (basetype
)
8760 || TYPE_STRUCTURAL_EQUALITY_P (type
))
8761 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8762 else if (TYPE_CANONICAL (TYPE_MAIN_VARIANT (basetype
)) != basetype
8763 || TYPE_CANONICAL (type
) != type
)
8765 = build_offset_type (TYPE_CANONICAL (TYPE_MAIN_VARIANT (basetype
)),
8766 TYPE_CANONICAL (type
));
8772 /* Create a complex type whose components are COMPONENT_TYPE.
8774 If NAMED is true, the type is given a TYPE_NAME. We do not always
8775 do so because this creates a DECL node and thus make the DECL_UIDs
8776 dependent on the type canonicalization hashtable, which is GC-ed,
8777 so the DECL_UIDs would not be stable wrt garbage collection. */
8780 build_complex_type (tree component_type
, bool named
)
8782 gcc_assert (INTEGRAL_TYPE_P (component_type
)
8783 || SCALAR_FLOAT_TYPE_P (component_type
)
8784 || FIXED_POINT_TYPE_P (component_type
));
8786 /* Make a node of the sort we want. */
8787 tree probe
= make_node (COMPLEX_TYPE
);
8789 TREE_TYPE (probe
) = TYPE_MAIN_VARIANT (component_type
);
8791 /* If we already have such a type, use the old one. */
8792 hashval_t hash
= type_hash_canon_hash (probe
);
8793 tree t
= type_hash_canon (hash
, probe
);
8797 /* We created a new type. The hash insertion will have laid
8798 out the type. We need to check the canonicalization and
8799 maybe set the name. */
8800 gcc_checking_assert (COMPLETE_TYPE_P (t
)
8802 && TYPE_CANONICAL (t
) == t
);
8804 if (TYPE_STRUCTURAL_EQUALITY_P (TREE_TYPE (t
)))
8805 SET_TYPE_STRUCTURAL_EQUALITY (t
);
8806 else if (TYPE_CANONICAL (TREE_TYPE (t
)) != TREE_TYPE (t
))
8808 = build_complex_type (TYPE_CANONICAL (TREE_TYPE (t
)), named
);
8810 /* We need to create a name, since complex is a fundamental type. */
8813 const char *name
= NULL
;
8815 if (TREE_TYPE (t
) == char_type_node
)
8816 name
= "complex char";
8817 else if (TREE_TYPE (t
) == signed_char_type_node
)
8818 name
= "complex signed char";
8819 else if (TREE_TYPE (t
) == unsigned_char_type_node
)
8820 name
= "complex unsigned char";
8821 else if (TREE_TYPE (t
) == short_integer_type_node
)
8822 name
= "complex short int";
8823 else if (TREE_TYPE (t
) == short_unsigned_type_node
)
8824 name
= "complex short unsigned int";
8825 else if (TREE_TYPE (t
) == integer_type_node
)
8826 name
= "complex int";
8827 else if (TREE_TYPE (t
) == unsigned_type_node
)
8828 name
= "complex unsigned int";
8829 else if (TREE_TYPE (t
) == long_integer_type_node
)
8830 name
= "complex long int";
8831 else if (TREE_TYPE (t
) == long_unsigned_type_node
)
8832 name
= "complex long unsigned int";
8833 else if (TREE_TYPE (t
) == long_long_integer_type_node
)
8834 name
= "complex long long int";
8835 else if (TREE_TYPE (t
) == long_long_unsigned_type_node
)
8836 name
= "complex long long unsigned int";
8839 TYPE_NAME (t
) = build_decl (UNKNOWN_LOCATION
, TYPE_DECL
,
8840 get_identifier (name
), t
);
8844 return build_qualified_type (t
, TYPE_QUALS (component_type
));
8847 /* If TYPE is a real or complex floating-point type and the target
8848 does not directly support arithmetic on TYPE then return the wider
8849 type to be used for arithmetic on TYPE. Otherwise, return
8853 excess_precision_type (tree type
)
8855 /* The target can give two different responses to the question of
8856 which excess precision mode it would like depending on whether we
8857 are in -fexcess-precision=standard or -fexcess-precision=fast. */
8859 enum excess_precision_type requested_type
8860 = (flag_excess_precision
== EXCESS_PRECISION_FAST
8861 ? EXCESS_PRECISION_TYPE_FAST
8862 : EXCESS_PRECISION_TYPE_STANDARD
);
8864 enum flt_eval_method target_flt_eval_method
8865 = targetm
.c
.excess_precision (requested_type
);
8867 /* The target should not ask for unpredictable float evaluation (though
8868 it might advertise that implicitly the evaluation is unpredictable,
8869 but we don't care about that here, it will have been reported
8870 elsewhere). If it does ask for unpredictable evaluation, we have
8871 nothing to do here. */
8872 gcc_assert (target_flt_eval_method
!= FLT_EVAL_METHOD_UNPREDICTABLE
);
8874 /* Nothing to do. The target has asked for all types we know about
8875 to be computed with their native precision and range. */
8876 if (target_flt_eval_method
== FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16
)
8879 /* The target will promote this type in a target-dependent way, so excess
8880 precision ought to leave it alone. */
8881 if (targetm
.promoted_type (type
) != NULL_TREE
)
8884 machine_mode float16_type_mode
= (float16_type_node
8885 ? TYPE_MODE (float16_type_node
)
8887 machine_mode float_type_mode
= TYPE_MODE (float_type_node
);
8888 machine_mode double_type_mode
= TYPE_MODE (double_type_node
);
8890 switch (TREE_CODE (type
))
8894 machine_mode type_mode
= TYPE_MODE (type
);
8895 switch (target_flt_eval_method
)
8897 case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT
:
8898 if (type_mode
== float16_type_mode
)
8899 return float_type_node
;
8901 case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE
:
8902 if (type_mode
== float16_type_mode
8903 || type_mode
== float_type_mode
)
8904 return double_type_node
;
8906 case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE
:
8907 if (type_mode
== float16_type_mode
8908 || type_mode
== float_type_mode
8909 || type_mode
== double_type_mode
)
8910 return long_double_type_node
;
8919 if (TREE_CODE (TREE_TYPE (type
)) != REAL_TYPE
)
8921 machine_mode type_mode
= TYPE_MODE (TREE_TYPE (type
));
8922 switch (target_flt_eval_method
)
8924 case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT
:
8925 if (type_mode
== float16_type_mode
)
8926 return complex_float_type_node
;
8928 case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE
:
8929 if (type_mode
== float16_type_mode
8930 || type_mode
== float_type_mode
)
8931 return complex_double_type_node
;
8933 case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE
:
8934 if (type_mode
== float16_type_mode
8935 || type_mode
== float_type_mode
8936 || type_mode
== double_type_mode
)
8937 return complex_long_double_type_node
;
8951 /* Return OP, stripped of any conversions to wider types as much as is safe.
8952 Converting the value back to OP's type makes a value equivalent to OP.
8954 If FOR_TYPE is nonzero, we return a value which, if converted to
8955 type FOR_TYPE, would be equivalent to converting OP to type FOR_TYPE.
8957 OP must have integer, real or enumeral type. Pointers are not allowed!
8959 There are some cases where the obvious value we could return
8960 would regenerate to OP if converted to OP's type,
8961 but would not extend like OP to wider types.
8962 If FOR_TYPE indicates such extension is contemplated, we eschew such values.
8963 For example, if OP is (unsigned short)(signed char)-1,
8964 we avoid returning (signed char)-1 if FOR_TYPE is int,
8965 even though extending that to an unsigned short would regenerate OP,
8966 since the result of extending (signed char)-1 to (int)
8967 is different from (int) OP. */
8970 get_unwidened (tree op
, tree for_type
)
8972 /* Set UNS initially if converting OP to FOR_TYPE is a zero-extension. */
8973 tree type
= TREE_TYPE (op
);
8975 = TYPE_PRECISION (for_type
!= 0 ? for_type
: type
);
8977 = (for_type
!= 0 && for_type
!= type
8978 && final_prec
> TYPE_PRECISION (type
)
8979 && TYPE_UNSIGNED (type
));
8982 while (CONVERT_EXPR_P (op
))
8986 /* TYPE_PRECISION on vector types has different meaning
8987 (TYPE_VECTOR_SUBPARTS) and casts from vectors are view conversions,
8988 so avoid them here. */
8989 if (TREE_CODE (TREE_TYPE (TREE_OPERAND (op
, 0))) == VECTOR_TYPE
)
8992 bitschange
= TYPE_PRECISION (TREE_TYPE (op
))
8993 - TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op
, 0)));
8995 /* Truncations are many-one so cannot be removed.
8996 Unless we are later going to truncate down even farther. */
8998 && final_prec
> TYPE_PRECISION (TREE_TYPE (op
)))
9001 /* See what's inside this conversion. If we decide to strip it,
9003 op
= TREE_OPERAND (op
, 0);
9005 /* If we have not stripped any zero-extensions (uns is 0),
9006 we can strip any kind of extension.
9007 If we have previously stripped a zero-extension,
9008 only zero-extensions can safely be stripped.
9009 Any extension can be stripped if the bits it would produce
9010 are all going to be discarded later by truncating to FOR_TYPE. */
9014 if (! uns
|| final_prec
<= TYPE_PRECISION (TREE_TYPE (op
)))
9016 /* TYPE_UNSIGNED says whether this is a zero-extension.
9017 Let's avoid computing it if it does not affect WIN
9018 and if UNS will not be needed again. */
9020 || CONVERT_EXPR_P (op
))
9021 && TYPE_UNSIGNED (TREE_TYPE (op
)))
9029 /* If we finally reach a constant see if it fits in sth smaller and
9030 in that case convert it. */
9031 if (TREE_CODE (win
) == INTEGER_CST
)
9033 tree wtype
= TREE_TYPE (win
);
9034 unsigned prec
= wi::min_precision (wi::to_wide (win
), TYPE_SIGN (wtype
));
9036 prec
= MAX (prec
, final_prec
);
9037 if (prec
< TYPE_PRECISION (wtype
))
9039 tree t
= lang_hooks
.types
.type_for_size (prec
, TYPE_UNSIGNED (wtype
));
9040 if (t
&& TYPE_PRECISION (t
) < TYPE_PRECISION (wtype
))
9041 win
= fold_convert (t
, win
);
9048 /* Return OP or a simpler expression for a narrower value
9049 which can be sign-extended or zero-extended to give back OP.
9050 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
9051 or 0 if the value should be sign-extended. */
9054 get_narrower (tree op
, int *unsignedp_ptr
)
9059 bool integral_p
= INTEGRAL_TYPE_P (TREE_TYPE (op
));
9061 while (TREE_CODE (op
) == NOP_EXPR
)
9064 = (TYPE_PRECISION (TREE_TYPE (op
))
9065 - TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op
, 0))));
9067 /* Truncations are many-one so cannot be removed. */
9071 /* See what's inside this conversion. If we decide to strip it,
9076 op
= TREE_OPERAND (op
, 0);
9077 /* An extension: the outermost one can be stripped,
9078 but remember whether it is zero or sign extension. */
9080 uns
= TYPE_UNSIGNED (TREE_TYPE (op
));
9081 /* Otherwise, if a sign extension has been stripped,
9082 only sign extensions can now be stripped;
9083 if a zero extension has been stripped, only zero-extensions. */
9084 else if (uns
!= TYPE_UNSIGNED (TREE_TYPE (op
)))
9088 else /* bitschange == 0 */
9090 /* A change in nominal type can always be stripped, but we must
9091 preserve the unsignedness. */
9093 uns
= TYPE_UNSIGNED (TREE_TYPE (op
));
9095 op
= TREE_OPERAND (op
, 0);
9096 /* Keep trying to narrow, but don't assign op to win if it
9097 would turn an integral type into something else. */
9098 if (INTEGRAL_TYPE_P (TREE_TYPE (op
)) != integral_p
)
9105 if (TREE_CODE (op
) == COMPONENT_REF
9106 /* Since type_for_size always gives an integer type. */
9107 && TREE_CODE (TREE_TYPE (op
)) != REAL_TYPE
9108 && TREE_CODE (TREE_TYPE (op
)) != FIXED_POINT_TYPE
9109 /* Ensure field is laid out already. */
9110 && DECL_SIZE (TREE_OPERAND (op
, 1)) != 0
9111 && tree_fits_uhwi_p (DECL_SIZE (TREE_OPERAND (op
, 1))))
9113 unsigned HOST_WIDE_INT innerprec
9114 = tree_to_uhwi (DECL_SIZE (TREE_OPERAND (op
, 1)));
9115 int unsignedp
= (DECL_UNSIGNED (TREE_OPERAND (op
, 1))
9116 || TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op
, 1))));
9117 tree type
= lang_hooks
.types
.type_for_size (innerprec
, unsignedp
);
9119 /* We can get this structure field in a narrower type that fits it,
9120 but the resulting extension to its nominal type (a fullword type)
9121 must satisfy the same conditions as for other extensions.
9123 Do this only for fields that are aligned (not bit-fields),
9124 because when bit-field insns will be used there is no
9125 advantage in doing this. */
9127 if (innerprec
< TYPE_PRECISION (TREE_TYPE (op
))
9128 && ! DECL_BIT_FIELD (TREE_OPERAND (op
, 1))
9129 && (first
|| uns
== DECL_UNSIGNED (TREE_OPERAND (op
, 1)))
9133 uns
= DECL_UNSIGNED (TREE_OPERAND (op
, 1));
9134 win
= fold_convert (type
, op
);
9138 *unsignedp_ptr
= uns
;
9142 /* Return true if integer constant C has a value that is permissible
9143 for TYPE, an integral type. */
9146 int_fits_type_p (const_tree c
, const_tree type
)
9148 tree type_low_bound
, type_high_bound
;
9149 bool ok_for_low_bound
, ok_for_high_bound
;
9150 signop sgn_c
= TYPE_SIGN (TREE_TYPE (c
));
9152 /* Non-standard boolean types can have arbitrary precision but various
9153 transformations assume that they can only take values 0 and +/-1. */
9154 if (TREE_CODE (type
) == BOOLEAN_TYPE
)
9155 return wi::fits_to_boolean_p (wi::to_wide (c
), type
);
9158 type_low_bound
= TYPE_MIN_VALUE (type
);
9159 type_high_bound
= TYPE_MAX_VALUE (type
);
9161 /* If at least one bound of the type is a constant integer, we can check
9162 ourselves and maybe make a decision. If no such decision is possible, but
9163 this type is a subtype, try checking against that. Otherwise, use
9164 fits_to_tree_p, which checks against the precision.
9166 Compute the status for each possibly constant bound, and return if we see
9167 one does not match. Use ok_for_xxx_bound for this purpose, assigning -1
9168 for "unknown if constant fits", 0 for "constant known *not* to fit" and 1
9169 for "constant known to fit". */
9171 /* Check if c >= type_low_bound. */
9172 if (type_low_bound
&& TREE_CODE (type_low_bound
) == INTEGER_CST
)
9174 if (tree_int_cst_lt (c
, type_low_bound
))
9176 ok_for_low_bound
= true;
9179 ok_for_low_bound
= false;
9181 /* Check if c <= type_high_bound. */
9182 if (type_high_bound
&& TREE_CODE (type_high_bound
) == INTEGER_CST
)
9184 if (tree_int_cst_lt (type_high_bound
, c
))
9186 ok_for_high_bound
= true;
9189 ok_for_high_bound
= false;
9191 /* If the constant fits both bounds, the result is known. */
9192 if (ok_for_low_bound
&& ok_for_high_bound
)
9195 /* Perform some generic filtering which may allow making a decision
9196 even if the bounds are not constant. First, negative integers
9197 never fit in unsigned types, */
9198 if (TYPE_UNSIGNED (type
) && sgn_c
== SIGNED
&& wi::neg_p (wi::to_wide (c
)))
9201 /* Second, narrower types always fit in wider ones. */
9202 if (TYPE_PRECISION (type
) > TYPE_PRECISION (TREE_TYPE (c
)))
9205 /* Third, unsigned integers with top bit set never fit signed types. */
9206 if (!TYPE_UNSIGNED (type
) && sgn_c
== UNSIGNED
)
9208 int prec
= GET_MODE_PRECISION (SCALAR_INT_TYPE_MODE (TREE_TYPE (c
))) - 1;
9209 if (prec
< TYPE_PRECISION (TREE_TYPE (c
)))
9211 /* When a tree_cst is converted to a wide-int, the precision
9212 is taken from the type. However, if the precision of the
9213 mode underneath the type is smaller than that, it is
9214 possible that the value will not fit. The test below
9215 fails if any bit is set between the sign bit of the
9216 underlying mode and the top bit of the type. */
9217 if (wi::zext (wi::to_wide (c
), prec
- 1) != wi::to_wide (c
))
9220 else if (wi::neg_p (wi::to_wide (c
)))
9224 /* If we haven't been able to decide at this point, there nothing more we
9225 can check ourselves here. Look at the base type if we have one and it
9226 has the same precision. */
9227 if (TREE_CODE (type
) == INTEGER_TYPE
9228 && TREE_TYPE (type
) != 0
9229 && TYPE_PRECISION (type
) == TYPE_PRECISION (TREE_TYPE (type
)))
9231 type
= TREE_TYPE (type
);
9235 /* Or to fits_to_tree_p, if nothing else. */
9236 return wi::fits_to_tree_p (wi::to_wide (c
), type
);
9239 /* Stores bounds of an integer TYPE in MIN and MAX. If TYPE has non-constant
9240 bounds or is a POINTER_TYPE, the maximum and/or minimum values that can be
9241 represented (assuming two's-complement arithmetic) within the bit
9242 precision of the type are returned instead. */
9245 get_type_static_bounds (const_tree type
, mpz_t min
, mpz_t max
)
9247 if (!POINTER_TYPE_P (type
) && TYPE_MIN_VALUE (type
)
9248 && TREE_CODE (TYPE_MIN_VALUE (type
)) == INTEGER_CST
)
9249 wi::to_mpz (wi::to_wide (TYPE_MIN_VALUE (type
)), min
, TYPE_SIGN (type
));
9252 if (TYPE_UNSIGNED (type
))
9253 mpz_set_ui (min
, 0);
9256 wide_int mn
= wi::min_value (TYPE_PRECISION (type
), SIGNED
);
9257 wi::to_mpz (mn
, min
, SIGNED
);
9261 if (!POINTER_TYPE_P (type
) && TYPE_MAX_VALUE (type
)
9262 && TREE_CODE (TYPE_MAX_VALUE (type
)) == INTEGER_CST
)
9263 wi::to_mpz (wi::to_wide (TYPE_MAX_VALUE (type
)), max
, TYPE_SIGN (type
));
9266 wide_int mn
= wi::max_value (TYPE_PRECISION (type
), TYPE_SIGN (type
));
9267 wi::to_mpz (mn
, max
, TYPE_SIGN (type
));
9271 /* Return true if VAR is an automatic variable defined in function FN. */
9274 auto_var_in_fn_p (const_tree var
, const_tree fn
)
9276 return (DECL_P (var
) && DECL_CONTEXT (var
) == fn
9277 && ((((VAR_P (var
) && ! DECL_EXTERNAL (var
))
9278 || TREE_CODE (var
) == PARM_DECL
)
9279 && ! TREE_STATIC (var
))
9280 || TREE_CODE (var
) == LABEL_DECL
9281 || TREE_CODE (var
) == RESULT_DECL
));
9284 /* Subprogram of following function. Called by walk_tree.
9286 Return *TP if it is an automatic variable or parameter of the
9287 function passed in as DATA. */
9290 find_var_from_fn (tree
*tp
, int *walk_subtrees
, void *data
)
9292 tree fn
= (tree
) data
;
9297 else if (DECL_P (*tp
)
9298 && auto_var_in_fn_p (*tp
, fn
))
9304 /* Returns true if T is, contains, or refers to a type with variable
9305 size. For METHOD_TYPEs and FUNCTION_TYPEs we exclude the
9306 arguments, but not the return type. If FN is nonzero, only return
9307 true if a modifier of the type or position of FN is a variable or
9308 parameter inside FN.
9310 This concept is more general than that of C99 'variably modified types':
9311 in C99, a struct type is never variably modified because a VLA may not
9312 appear as a structure member. However, in GNU C code like:
9314 struct S { int i[f()]; };
9316 is valid, and other languages may define similar constructs. */
9319 variably_modified_type_p (tree type
, tree fn
)
9323 /* Test if T is either variable (if FN is zero) or an expression containing
9324 a variable in FN. If TYPE isn't gimplified, return true also if
9325 gimplify_one_sizepos would gimplify the expression into a local
9327 #define RETURN_TRUE_IF_VAR(T) \
9328 do { tree _t = (T); \
9329 if (_t != NULL_TREE \
9330 && _t != error_mark_node \
9331 && !CONSTANT_CLASS_P (_t) \
9332 && TREE_CODE (_t) != PLACEHOLDER_EXPR \
9334 || (!TYPE_SIZES_GIMPLIFIED (type) \
9335 && (TREE_CODE (_t) != VAR_DECL \
9336 && !CONTAINS_PLACEHOLDER_P (_t))) \
9337 || walk_tree (&_t, find_var_from_fn, fn, NULL))) \
9338 return true; } while (0)
9340 if (type
== error_mark_node
)
9343 /* If TYPE itself has variable size, it is variably modified. */
9344 RETURN_TRUE_IF_VAR (TYPE_SIZE (type
));
9345 RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT (type
));
9347 switch (TREE_CODE (type
))
9350 case REFERENCE_TYPE
:
9352 /* Ada can have pointer types refering to themselves indirectly. */
9353 if (TREE_VISITED (type
))
9355 TREE_VISITED (type
) = true;
9356 if (variably_modified_type_p (TREE_TYPE (type
), fn
))
9358 TREE_VISITED (type
) = false;
9361 TREE_VISITED (type
) = false;
9366 /* If TYPE is a function type, it is variably modified if the
9367 return type is variably modified. */
9368 if (variably_modified_type_p (TREE_TYPE (type
), fn
))
9374 case FIXED_POINT_TYPE
:
9377 /* Scalar types are variably modified if their end points
9379 RETURN_TRUE_IF_VAR (TYPE_MIN_VALUE (type
));
9380 RETURN_TRUE_IF_VAR (TYPE_MAX_VALUE (type
));
9385 case QUAL_UNION_TYPE
:
9386 /* We can't see if any of the fields are variably-modified by the
9387 definition we normally use, since that would produce infinite
9388 recursion via pointers. */
9389 /* This is variably modified if some field's type is. */
9390 for (t
= TYPE_FIELDS (type
); t
; t
= DECL_CHAIN (t
))
9391 if (TREE_CODE (t
) == FIELD_DECL
)
9393 RETURN_TRUE_IF_VAR (DECL_FIELD_OFFSET (t
));
9394 RETURN_TRUE_IF_VAR (DECL_SIZE (t
));
9395 RETURN_TRUE_IF_VAR (DECL_SIZE_UNIT (t
));
9397 if (TREE_CODE (type
) == QUAL_UNION_TYPE
)
9398 RETURN_TRUE_IF_VAR (DECL_QUALIFIER (t
));
9403 /* Do not call ourselves to avoid infinite recursion. This is
9404 variably modified if the element type is. */
9405 RETURN_TRUE_IF_VAR (TYPE_SIZE (TREE_TYPE (type
)));
9406 RETURN_TRUE_IF_VAR (TYPE_SIZE_UNIT (TREE_TYPE (type
)));
9413 /* The current language may have other cases to check, but in general,
9414 all other types are not variably modified. */
9415 return lang_hooks
.tree_inlining
.var_mod_type_p (type
, fn
);
9417 #undef RETURN_TRUE_IF_VAR
9420 /* Given a DECL or TYPE, return the scope in which it was declared, or
9421 NULL_TREE if there is no containing scope. */
9424 get_containing_scope (const_tree t
)
9426 return (TYPE_P (t
) ? TYPE_CONTEXT (t
) : DECL_CONTEXT (t
));
9429 /* Returns the ultimate TRANSLATION_UNIT_DECL context of DECL or NULL. */
9432 get_ultimate_context (const_tree decl
)
9434 while (decl
&& TREE_CODE (decl
) != TRANSLATION_UNIT_DECL
)
9436 if (TREE_CODE (decl
) == BLOCK
)
9437 decl
= BLOCK_SUPERCONTEXT (decl
);
9439 decl
= get_containing_scope (decl
);
9444 /* Return the innermost context enclosing DECL that is
9445 a FUNCTION_DECL, or zero if none. */
9448 decl_function_context (const_tree decl
)
9452 if (TREE_CODE (decl
) == ERROR_MARK
)
9455 /* C++ virtual functions use DECL_CONTEXT for the class of the vtable
9456 where we look up the function at runtime. Such functions always take
9457 a first argument of type 'pointer to real context'.
9459 C++ should really be fixed to use DECL_CONTEXT for the real context,
9460 and use something else for the "virtual context". */
9461 else if (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
9464 (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl
)))));
9466 context
= DECL_CONTEXT (decl
);
9468 while (context
&& TREE_CODE (context
) != FUNCTION_DECL
)
9470 if (TREE_CODE (context
) == BLOCK
)
9471 context
= BLOCK_SUPERCONTEXT (context
);
9473 context
= get_containing_scope (context
);
9479 /* Return the innermost context enclosing DECL that is
9480 a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, or zero if none.
9481 TYPE_DECLs and FUNCTION_DECLs are transparent to this function. */
9484 decl_type_context (const_tree decl
)
9486 tree context
= DECL_CONTEXT (decl
);
9489 switch (TREE_CODE (context
))
9491 case NAMESPACE_DECL
:
9492 case TRANSLATION_UNIT_DECL
:
9497 case QUAL_UNION_TYPE
:
9502 context
= DECL_CONTEXT (context
);
9506 context
= BLOCK_SUPERCONTEXT (context
);
9516 /* CALL is a CALL_EXPR. Return the declaration for the function
9517 called, or NULL_TREE if the called function cannot be
9521 get_callee_fndecl (const_tree call
)
9525 if (call
== error_mark_node
)
9526 return error_mark_node
;
9528 /* It's invalid to call this function with anything but a
9530 gcc_assert (TREE_CODE (call
) == CALL_EXPR
);
9532 /* The first operand to the CALL is the address of the function
9534 addr
= CALL_EXPR_FN (call
);
9536 /* If there is no function, return early. */
9537 if (addr
== NULL_TREE
)
9542 /* If this is a readonly function pointer, extract its initial value. */
9543 if (DECL_P (addr
) && TREE_CODE (addr
) != FUNCTION_DECL
9544 && TREE_READONLY (addr
) && ! TREE_THIS_VOLATILE (addr
)
9545 && DECL_INITIAL (addr
))
9546 addr
= DECL_INITIAL (addr
);
9548 /* If the address is just `&f' for some function `f', then we know
9549 that `f' is being called. */
9550 if (TREE_CODE (addr
) == ADDR_EXPR
9551 && TREE_CODE (TREE_OPERAND (addr
, 0)) == FUNCTION_DECL
)
9552 return TREE_OPERAND (addr
, 0);
9554 /* We couldn't figure out what was being called. */
9558 /* If CALL_EXPR CALL calls a normal built-in function or an internal function,
9559 return the associated function code, otherwise return CFN_LAST. */
9562 get_call_combined_fn (const_tree call
)
9564 /* It's invalid to call this function with anything but a CALL_EXPR. */
9565 gcc_assert (TREE_CODE (call
) == CALL_EXPR
);
9567 if (!CALL_EXPR_FN (call
))
9568 return as_combined_fn (CALL_EXPR_IFN (call
));
9570 tree fndecl
= get_callee_fndecl (call
);
9571 if (fndecl
&& fndecl_built_in_p (fndecl
, BUILT_IN_NORMAL
))
9572 return as_combined_fn (DECL_FUNCTION_CODE (fndecl
));
9577 /* Comparator of indices based on tree_node_counts. */
9580 tree_nodes_cmp (const void *p1
, const void *p2
)
9582 const unsigned *n1
= (const unsigned *)p1
;
9583 const unsigned *n2
= (const unsigned *)p2
;
9585 return tree_node_counts
[*n1
] - tree_node_counts
[*n2
];
9588 /* Comparator of indices based on tree_code_counts. */
9591 tree_codes_cmp (const void *p1
, const void *p2
)
9593 const unsigned *n1
= (const unsigned *)p1
;
9594 const unsigned *n2
= (const unsigned *)p2
;
9596 return tree_code_counts
[*n1
] - tree_code_counts
[*n2
];
9599 #define TREE_MEM_USAGE_SPACES 40
9601 /* Print debugging information about tree nodes generated during the compile,
9602 and any language-specific information. */
9605 dump_tree_statistics (void)
9607 if (GATHER_STATISTICS
)
9609 uint64_t total_nodes
, total_bytes
;
9610 fprintf (stderr
, "\nKind Nodes Bytes\n");
9611 mem_usage::print_dash_line (TREE_MEM_USAGE_SPACES
);
9612 total_nodes
= total_bytes
= 0;
9615 auto_vec
<unsigned> indices (all_kinds
);
9616 for (unsigned i
= 0; i
< all_kinds
; i
++)
9617 indices
.quick_push (i
);
9618 indices
.qsort (tree_nodes_cmp
);
9620 for (unsigned i
= 0; i
< (int) all_kinds
; i
++)
9622 unsigned j
= indices
[i
];
9623 fprintf (stderr
, "%-20s %6" PRIu64
"%c %9" PRIu64
"%c\n",
9624 tree_node_kind_names
[i
], SIZE_AMOUNT (tree_node_counts
[j
]),
9625 SIZE_AMOUNT (tree_node_sizes
[j
]));
9626 total_nodes
+= tree_node_counts
[j
];
9627 total_bytes
+= tree_node_sizes
[j
];
9629 mem_usage::print_dash_line (TREE_MEM_USAGE_SPACES
);
9630 fprintf (stderr
, "%-20s %6" PRIu64
"%c %9" PRIu64
"%c\n", "Total",
9631 SIZE_AMOUNT (total_nodes
), SIZE_AMOUNT (total_bytes
));
9632 mem_usage::print_dash_line (TREE_MEM_USAGE_SPACES
);
9636 fprintf (stderr
, "Code Nodes\n");
9637 mem_usage::print_dash_line (TREE_MEM_USAGE_SPACES
);
9639 auto_vec
<unsigned> indices (MAX_TREE_CODES
);
9640 for (unsigned i
= 0; i
< MAX_TREE_CODES
; i
++)
9641 indices
.quick_push (i
);
9642 indices
.qsort (tree_codes_cmp
);
9644 for (unsigned i
= 0; i
< MAX_TREE_CODES
; i
++)
9646 unsigned j
= indices
[i
];
9647 fprintf (stderr
, "%-32s %6" PRIu64
"%c\n",
9648 get_tree_code_name ((enum tree_code
) j
),
9649 SIZE_AMOUNT (tree_code_counts
[j
]));
9651 mem_usage::print_dash_line (TREE_MEM_USAGE_SPACES
);
9652 fprintf (stderr
, "\n");
9653 ssanames_print_statistics ();
9654 fprintf (stderr
, "\n");
9655 phinodes_print_statistics ();
9656 fprintf (stderr
, "\n");
9660 fprintf (stderr
, "(No per-node statistics)\n");
9662 print_type_hash_statistics ();
9663 print_debug_expr_statistics ();
9664 print_value_expr_statistics ();
9665 lang_hooks
.print_statistics ();
9668 #define FILE_FUNCTION_FORMAT "_GLOBAL__%s_%s"
9670 /* Generate a crc32 of the low BYTES bytes of VALUE. */
9673 crc32_unsigned_n (unsigned chksum
, unsigned value
, unsigned bytes
)
9675 /* This relies on the raw feedback's top 4 bits being zero. */
9676 #define FEEDBACK(X) ((X) * 0x04c11db7)
9677 #define SYNDROME(X) (FEEDBACK ((X) & 1) ^ FEEDBACK ((X) & 2) \
9678 ^ FEEDBACK ((X) & 4) ^ FEEDBACK ((X) & 8))
9679 static const unsigned syndromes
[16] =
9681 SYNDROME(0x0), SYNDROME(0x1), SYNDROME(0x2), SYNDROME(0x3),
9682 SYNDROME(0x4), SYNDROME(0x5), SYNDROME(0x6), SYNDROME(0x7),
9683 SYNDROME(0x8), SYNDROME(0x9), SYNDROME(0xa), SYNDROME(0xb),
9684 SYNDROME(0xc), SYNDROME(0xd), SYNDROME(0xe), SYNDROME(0xf),
9689 value
<<= (32 - bytes
* 8);
9690 for (unsigned ix
= bytes
* 2; ix
--; value
<<= 4)
9692 unsigned feedback
= syndromes
[((value
^ chksum
) >> 28) & 0xf];
9694 chksum
= (chksum
<< 4) ^ feedback
;
9700 /* Generate a crc32 of a string. */
9703 crc32_string (unsigned chksum
, const char *string
)
9706 chksum
= crc32_byte (chksum
, *string
);
9711 /* P is a string that will be used in a symbol. Mask out any characters
9712 that are not valid in that context. */
9715 clean_symbol_name (char *p
)
9719 #ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
9722 #ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
9729 /* For anonymous aggregate types, we need some sort of name to
9730 hold on to. In practice, this should not appear, but it should
9731 not be harmful if it does. */
9733 anon_aggrname_p(const_tree id_node
)
9735 #ifndef NO_DOT_IN_LABEL
9736 return (IDENTIFIER_POINTER (id_node
)[0] == '.'
9737 && IDENTIFIER_POINTER (id_node
)[1] == '_');
9738 #else /* NO_DOT_IN_LABEL */
9739 #ifndef NO_DOLLAR_IN_LABEL
9740 return (IDENTIFIER_POINTER (id_node
)[0] == '$' \
9741 && IDENTIFIER_POINTER (id_node
)[1] == '_');
9742 #else /* NO_DOLLAR_IN_LABEL */
9743 #define ANON_AGGRNAME_PREFIX "__anon_"
9744 return (!strncmp (IDENTIFIER_POINTER (id_node
), ANON_AGGRNAME_PREFIX
,
9745 sizeof (ANON_AGGRNAME_PREFIX
) - 1));
9746 #endif /* NO_DOLLAR_IN_LABEL */
9747 #endif /* NO_DOT_IN_LABEL */
9750 /* Return a format for an anonymous aggregate name. */
9752 anon_aggrname_format()
9754 #ifndef NO_DOT_IN_LABEL
9756 #else /* NO_DOT_IN_LABEL */
9757 #ifndef NO_DOLLAR_IN_LABEL
9759 #else /* NO_DOLLAR_IN_LABEL */
9761 #endif /* NO_DOLLAR_IN_LABEL */
9762 #endif /* NO_DOT_IN_LABEL */
9765 /* Generate a name for a special-purpose function.
9766 The generated name may need to be unique across the whole link.
9767 Changes to this function may also require corresponding changes to
9768 xstrdup_mask_random.
9769 TYPE is some string to identify the purpose of this function to the
9770 linker or collect2; it must start with an uppercase letter,
9772 I - for constructors
9774 N - for C++ anonymous namespaces
9775 F - for DWARF unwind frame information. */
9778 get_file_function_name (const char *type
)
9784 /* If we already have a name we know to be unique, just use that. */
9785 if (first_global_object_name
)
9786 p
= q
= ASTRDUP (first_global_object_name
);
9787 /* If the target is handling the constructors/destructors, they
9788 will be local to this file and the name is only necessary for
9790 We also assign sub_I and sub_D sufixes to constructors called from
9791 the global static constructors. These are always local. */
9792 else if (((type
[0] == 'I' || type
[0] == 'D') && targetm
.have_ctors_dtors
)
9793 || (strncmp (type
, "sub_", 4) == 0
9794 && (type
[4] == 'I' || type
[4] == 'D')))
9796 const char *file
= main_input_filename
;
9798 file
= LOCATION_FILE (input_location
);
9799 /* Just use the file's basename, because the full pathname
9800 might be quite long. */
9801 p
= q
= ASTRDUP (lbasename (file
));
9805 /* Otherwise, the name must be unique across the entire link.
9806 We don't have anything that we know to be unique to this translation
9807 unit, so use what we do have and throw in some randomness. */
9809 const char *name
= weak_global_object_name
;
9810 const char *file
= main_input_filename
;
9815 file
= LOCATION_FILE (input_location
);
9817 len
= strlen (file
);
9818 q
= (char *) alloca (9 + 19 + len
+ 1);
9819 memcpy (q
, file
, len
+ 1);
9821 snprintf (q
+ len
, 9 + 19 + 1, "_%08X_" HOST_WIDE_INT_PRINT_HEX
,
9822 crc32_string (0, name
), get_random_seed (false));
9827 clean_symbol_name (q
);
9828 buf
= (char *) alloca (sizeof (FILE_FUNCTION_FORMAT
) + strlen (p
)
9831 /* Set up the name of the file-level functions we may need.
9832 Use a global object (which is already required to be unique over
9833 the program) rather than the file name (which imposes extra
9835 sprintf (buf
, FILE_FUNCTION_FORMAT
, type
, p
);
9837 return get_identifier (buf
);
9840 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
9842 /* Complain that the tree code of NODE does not match the expected 0
9843 terminated list of trailing codes. The trailing code list can be
9844 empty, for a more vague error message. FILE, LINE, and FUNCTION
9845 are of the caller. */
9848 tree_check_failed (const_tree node
, const char *file
,
9849 int line
, const char *function
, ...)
9853 unsigned length
= 0;
9854 enum tree_code code
;
9856 va_start (args
, function
);
9857 while ((code
= (enum tree_code
) va_arg (args
, int)))
9858 length
+= 4 + strlen (get_tree_code_name (code
));
9863 va_start (args
, function
);
9864 length
+= strlen ("expected ");
9865 buffer
= tmp
= (char *) alloca (length
);
9867 while ((code
= (enum tree_code
) va_arg (args
, int)))
9869 const char *prefix
= length
? " or " : "expected ";
9871 strcpy (tmp
+ length
, prefix
);
9872 length
+= strlen (prefix
);
9873 strcpy (tmp
+ length
, get_tree_code_name (code
));
9874 length
+= strlen (get_tree_code_name (code
));
9879 buffer
= "unexpected node";
9881 internal_error ("tree check: %s, have %s in %s, at %s:%d",
9882 buffer
, get_tree_code_name (TREE_CODE (node
)),
9883 function
, trim_filename (file
), line
);
9886 /* Complain that the tree code of NODE does match the expected 0
9887 terminated list of trailing codes. FILE, LINE, and FUNCTION are of
9891 tree_not_check_failed (const_tree node
, const char *file
,
9892 int line
, const char *function
, ...)
9896 unsigned length
= 0;
9897 enum tree_code code
;
9899 va_start (args
, function
);
9900 while ((code
= (enum tree_code
) va_arg (args
, int)))
9901 length
+= 4 + strlen (get_tree_code_name (code
));
9903 va_start (args
, function
);
9904 buffer
= (char *) alloca (length
);
9906 while ((code
= (enum tree_code
) va_arg (args
, int)))
9910 strcpy (buffer
+ length
, " or ");
9913 strcpy (buffer
+ length
, get_tree_code_name (code
));
9914 length
+= strlen (get_tree_code_name (code
));
9918 internal_error ("tree check: expected none of %s, have %s in %s, at %s:%d",
9919 buffer
, get_tree_code_name (TREE_CODE (node
)),
9920 function
, trim_filename (file
), line
);
9923 /* Similar to tree_check_failed, except that we check for a class of tree
9924 code, given in CL. */
9927 tree_class_check_failed (const_tree node
, const enum tree_code_class cl
,
9928 const char *file
, int line
, const char *function
)
9931 ("tree check: expected class %qs, have %qs (%s) in %s, at %s:%d",
9932 TREE_CODE_CLASS_STRING (cl
),
9933 TREE_CODE_CLASS_STRING (TREE_CODE_CLASS (TREE_CODE (node
))),
9934 get_tree_code_name (TREE_CODE (node
)), function
, trim_filename (file
), line
);
9937 /* Similar to tree_check_failed, except that instead of specifying a
9938 dozen codes, use the knowledge that they're all sequential. */
9941 tree_range_check_failed (const_tree node
, const char *file
, int line
,
9942 const char *function
, enum tree_code c1
,
9946 unsigned length
= 0;
9949 for (c
= c1
; c
<= c2
; ++c
)
9950 length
+= 4 + strlen (get_tree_code_name ((enum tree_code
) c
));
9952 length
+= strlen ("expected ");
9953 buffer
= (char *) alloca (length
);
9956 for (c
= c1
; c
<= c2
; ++c
)
9958 const char *prefix
= length
? " or " : "expected ";
9960 strcpy (buffer
+ length
, prefix
);
9961 length
+= strlen (prefix
);
9962 strcpy (buffer
+ length
, get_tree_code_name ((enum tree_code
) c
));
9963 length
+= strlen (get_tree_code_name ((enum tree_code
) c
));
9966 internal_error ("tree check: %s, have %s in %s, at %s:%d",
9967 buffer
, get_tree_code_name (TREE_CODE (node
)),
9968 function
, trim_filename (file
), line
);
9972 /* Similar to tree_check_failed, except that we check that a tree does
9973 not have the specified code, given in CL. */
9976 tree_not_class_check_failed (const_tree node
, const enum tree_code_class cl
,
9977 const char *file
, int line
, const char *function
)
9980 ("tree check: did not expect class %qs, have %qs (%s) in %s, at %s:%d",
9981 TREE_CODE_CLASS_STRING (cl
),
9982 TREE_CODE_CLASS_STRING (TREE_CODE_CLASS (TREE_CODE (node
))),
9983 get_tree_code_name (TREE_CODE (node
)), function
, trim_filename (file
), line
);
9987 /* Similar to tree_check_failed but applied to OMP_CLAUSE codes. */
9990 omp_clause_check_failed (const_tree node
, const char *file
, int line
,
9991 const char *function
, enum omp_clause_code code
)
9993 internal_error ("tree check: expected omp_clause %s, have %s in %s, at %s:%d",
9994 omp_clause_code_name
[code
], get_tree_code_name (TREE_CODE (node
)),
9995 function
, trim_filename (file
), line
);
9999 /* Similar to tree_range_check_failed but applied to OMP_CLAUSE codes. */
10002 omp_clause_range_check_failed (const_tree node
, const char *file
, int line
,
10003 const char *function
, enum omp_clause_code c1
,
10004 enum omp_clause_code c2
)
10007 unsigned length
= 0;
10010 for (c
= c1
; c
<= c2
; ++c
)
10011 length
+= 4 + strlen (omp_clause_code_name
[c
]);
10013 length
+= strlen ("expected ");
10014 buffer
= (char *) alloca (length
);
10017 for (c
= c1
; c
<= c2
; ++c
)
10019 const char *prefix
= length
? " or " : "expected ";
10021 strcpy (buffer
+ length
, prefix
);
10022 length
+= strlen (prefix
);
10023 strcpy (buffer
+ length
, omp_clause_code_name
[c
]);
10024 length
+= strlen (omp_clause_code_name
[c
]);
10027 internal_error ("tree check: %s, have %s in %s, at %s:%d",
10028 buffer
, omp_clause_code_name
[TREE_CODE (node
)],
10029 function
, trim_filename (file
), line
);
10033 #undef DEFTREESTRUCT
10034 #define DEFTREESTRUCT(VAL, NAME) NAME,
10036 static const char *ts_enum_names
[] = {
10037 #include "treestruct.def"
10039 #undef DEFTREESTRUCT
10041 #define TS_ENUM_NAME(EN) (ts_enum_names[(EN)])
10043 /* Similar to tree_class_check_failed, except that we check for
10044 whether CODE contains the tree structure identified by EN. */
10047 tree_contains_struct_check_failed (const_tree node
,
10048 const enum tree_node_structure_enum en
,
10049 const char *file
, int line
,
10050 const char *function
)
10053 ("tree check: expected tree that contains %qs structure, have %qs in %s, at %s:%d",
10055 get_tree_code_name (TREE_CODE (node
)), function
, trim_filename (file
), line
);
10059 /* Similar to above, except that the check is for the bounds of a TREE_VEC's
10060 (dynamically sized) vector. */
10063 tree_int_cst_elt_check_failed (int idx
, int len
, const char *file
, int line
,
10064 const char *function
)
10067 ("tree check: accessed elt %d of tree_int_cst with %d elts in %s, at %s:%d",
10068 idx
+ 1, len
, function
, trim_filename (file
), line
);
10071 /* Similar to above, except that the check is for the bounds of a TREE_VEC's
10072 (dynamically sized) vector. */
10075 tree_vec_elt_check_failed (int idx
, int len
, const char *file
, int line
,
10076 const char *function
)
10079 ("tree check: accessed elt %d of tree_vec with %d elts in %s, at %s:%d",
10080 idx
+ 1, len
, function
, trim_filename (file
), line
);
10083 /* Similar to above, except that the check is for the bounds of the operand
10084 vector of an expression node EXP. */
10087 tree_operand_check_failed (int idx
, const_tree exp
, const char *file
,
10088 int line
, const char *function
)
10090 enum tree_code code
= TREE_CODE (exp
);
10092 ("tree check: accessed operand %d of %s with %d operands in %s, at %s:%d",
10093 idx
+ 1, get_tree_code_name (code
), TREE_OPERAND_LENGTH (exp
),
10094 function
, trim_filename (file
), line
);
10097 /* Similar to above, except that the check is for the number of
10098 operands of an OMP_CLAUSE node. */
10101 omp_clause_operand_check_failed (int idx
, const_tree t
, const char *file
,
10102 int line
, const char *function
)
10105 ("tree check: accessed operand %d of omp_clause %s with %d operands "
10106 "in %s, at %s:%d", idx
+ 1, omp_clause_code_name
[OMP_CLAUSE_CODE (t
)],
10107 omp_clause_num_ops
[OMP_CLAUSE_CODE (t
)], function
,
10108 trim_filename (file
), line
);
10110 #endif /* ENABLE_TREE_CHECKING */
10112 /* Create a new vector type node holding NUNITS units of type INNERTYPE,
10113 and mapped to the machine mode MODE. Initialize its fields and build
10114 the information necessary for debugging output. */
10117 make_vector_type (tree innertype
, poly_int64 nunits
, machine_mode mode
)
10120 tree mv_innertype
= TYPE_MAIN_VARIANT (innertype
);
10122 t
= make_node (VECTOR_TYPE
);
10123 TREE_TYPE (t
) = mv_innertype
;
10124 SET_TYPE_VECTOR_SUBPARTS (t
, nunits
);
10125 SET_TYPE_MODE (t
, mode
);
10127 if (TYPE_STRUCTURAL_EQUALITY_P (mv_innertype
) || in_lto_p
)
10128 SET_TYPE_STRUCTURAL_EQUALITY (t
);
10129 else if ((TYPE_CANONICAL (mv_innertype
) != innertype
10130 || mode
!= VOIDmode
)
10131 && !VECTOR_BOOLEAN_TYPE_P (t
))
10133 = make_vector_type (TYPE_CANONICAL (mv_innertype
), nunits
, VOIDmode
);
10137 hashval_t hash
= type_hash_canon_hash (t
);
10138 t
= type_hash_canon (hash
, t
);
10140 /* We have built a main variant, based on the main variant of the
10141 inner type. Use it to build the variant we return. */
10142 if ((TYPE_ATTRIBUTES (innertype
) || TYPE_QUALS (innertype
))
10143 && TREE_TYPE (t
) != innertype
)
10144 return build_type_attribute_qual_variant (t
,
10145 TYPE_ATTRIBUTES (innertype
),
10146 TYPE_QUALS (innertype
));
10152 make_or_reuse_type (unsigned size
, int unsignedp
)
10156 if (size
== INT_TYPE_SIZE
)
10157 return unsignedp
? unsigned_type_node
: integer_type_node
;
10158 if (size
== CHAR_TYPE_SIZE
)
10159 return unsignedp
? unsigned_char_type_node
: signed_char_type_node
;
10160 if (size
== SHORT_TYPE_SIZE
)
10161 return unsignedp
? short_unsigned_type_node
: short_integer_type_node
;
10162 if (size
== LONG_TYPE_SIZE
)
10163 return unsignedp
? long_unsigned_type_node
: long_integer_type_node
;
10164 if (size
== LONG_LONG_TYPE_SIZE
)
10165 return (unsignedp
? long_long_unsigned_type_node
10166 : long_long_integer_type_node
);
10168 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
10169 if (size
== int_n_data
[i
].bitsize
10170 && int_n_enabled_p
[i
])
10171 return (unsignedp
? int_n_trees
[i
].unsigned_type
10172 : int_n_trees
[i
].signed_type
);
10175 return make_unsigned_type (size
);
10177 return make_signed_type (size
);
10180 /* Create or reuse a fract type by SIZE, UNSIGNEDP, and SATP. */
10183 make_or_reuse_fract_type (unsigned size
, int unsignedp
, int satp
)
10187 if (size
== SHORT_FRACT_TYPE_SIZE
)
10188 return unsignedp
? sat_unsigned_short_fract_type_node
10189 : sat_short_fract_type_node
;
10190 if (size
== FRACT_TYPE_SIZE
)
10191 return unsignedp
? sat_unsigned_fract_type_node
: sat_fract_type_node
;
10192 if (size
== LONG_FRACT_TYPE_SIZE
)
10193 return unsignedp
? sat_unsigned_long_fract_type_node
10194 : sat_long_fract_type_node
;
10195 if (size
== LONG_LONG_FRACT_TYPE_SIZE
)
10196 return unsignedp
? sat_unsigned_long_long_fract_type_node
10197 : sat_long_long_fract_type_node
;
10201 if (size
== SHORT_FRACT_TYPE_SIZE
)
10202 return unsignedp
? unsigned_short_fract_type_node
10203 : short_fract_type_node
;
10204 if (size
== FRACT_TYPE_SIZE
)
10205 return unsignedp
? unsigned_fract_type_node
: fract_type_node
;
10206 if (size
== LONG_FRACT_TYPE_SIZE
)
10207 return unsignedp
? unsigned_long_fract_type_node
10208 : long_fract_type_node
;
10209 if (size
== LONG_LONG_FRACT_TYPE_SIZE
)
10210 return unsignedp
? unsigned_long_long_fract_type_node
10211 : long_long_fract_type_node
;
10214 return make_fract_type (size
, unsignedp
, satp
);
10217 /* Create or reuse an accum type by SIZE, UNSIGNEDP, and SATP. */
10220 make_or_reuse_accum_type (unsigned size
, int unsignedp
, int satp
)
10224 if (size
== SHORT_ACCUM_TYPE_SIZE
)
10225 return unsignedp
? sat_unsigned_short_accum_type_node
10226 : sat_short_accum_type_node
;
10227 if (size
== ACCUM_TYPE_SIZE
)
10228 return unsignedp
? sat_unsigned_accum_type_node
: sat_accum_type_node
;
10229 if (size
== LONG_ACCUM_TYPE_SIZE
)
10230 return unsignedp
? sat_unsigned_long_accum_type_node
10231 : sat_long_accum_type_node
;
10232 if (size
== LONG_LONG_ACCUM_TYPE_SIZE
)
10233 return unsignedp
? sat_unsigned_long_long_accum_type_node
10234 : sat_long_long_accum_type_node
;
10238 if (size
== SHORT_ACCUM_TYPE_SIZE
)
10239 return unsignedp
? unsigned_short_accum_type_node
10240 : short_accum_type_node
;
10241 if (size
== ACCUM_TYPE_SIZE
)
10242 return unsignedp
? unsigned_accum_type_node
: accum_type_node
;
10243 if (size
== LONG_ACCUM_TYPE_SIZE
)
10244 return unsignedp
? unsigned_long_accum_type_node
10245 : long_accum_type_node
;
10246 if (size
== LONG_LONG_ACCUM_TYPE_SIZE
)
10247 return unsignedp
? unsigned_long_long_accum_type_node
10248 : long_long_accum_type_node
;
10251 return make_accum_type (size
, unsignedp
, satp
);
10255 /* Create an atomic variant node for TYPE. This routine is called
10256 during initialization of data types to create the 5 basic atomic
10257 types. The generic build_variant_type function requires these to
10258 already be set up in order to function properly, so cannot be
10259 called from there. If ALIGN is non-zero, then ensure alignment is
10260 overridden to this value. */
10263 build_atomic_base (tree type
, unsigned int align
)
10267 /* Make sure its not already registered. */
10268 if ((t
= get_qualified_type (type
, TYPE_QUAL_ATOMIC
)))
10271 t
= build_variant_type_copy (type
);
10272 set_type_quals (t
, TYPE_QUAL_ATOMIC
);
10275 SET_TYPE_ALIGN (t
, align
);
10280 /* Information about the _FloatN and _FloatNx types. This must be in
10281 the same order as the corresponding TI_* enum values. */
10282 const floatn_type_info floatn_nx_types
[NUM_FLOATN_NX_TYPES
] =
10294 /* Create nodes for all integer types (and error_mark_node) using the sizes
10295 of C datatypes. SIGNED_CHAR specifies whether char is signed. */
10298 build_common_tree_nodes (bool signed_char
)
10302 error_mark_node
= make_node (ERROR_MARK
);
10303 TREE_TYPE (error_mark_node
) = error_mark_node
;
10305 initialize_sizetypes ();
10307 /* Define both `signed char' and `unsigned char'. */
10308 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
10309 TYPE_STRING_FLAG (signed_char_type_node
) = 1;
10310 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
10311 TYPE_STRING_FLAG (unsigned_char_type_node
) = 1;
10313 /* Define `char', which is like either `signed char' or `unsigned char'
10314 but not the same as either. */
10317 ? make_signed_type (CHAR_TYPE_SIZE
)
10318 : make_unsigned_type (CHAR_TYPE_SIZE
));
10319 TYPE_STRING_FLAG (char_type_node
) = 1;
10321 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
10322 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
10323 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
10324 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
10325 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
10326 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
10327 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
10328 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
10330 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
10332 int_n_trees
[i
].signed_type
= make_signed_type (int_n_data
[i
].bitsize
);
10333 int_n_trees
[i
].unsigned_type
= make_unsigned_type (int_n_data
[i
].bitsize
);
10335 if (int_n_enabled_p
[i
])
10337 integer_types
[itk_intN_0
+ i
* 2] = int_n_trees
[i
].signed_type
;
10338 integer_types
[itk_unsigned_intN_0
+ i
* 2] = int_n_trees
[i
].unsigned_type
;
10342 /* Define a boolean type. This type only represents boolean values but
10343 may be larger than char depending on the value of BOOL_TYPE_SIZE. */
10344 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
10345 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
10346 TYPE_PRECISION (boolean_type_node
) = 1;
10347 TYPE_MAX_VALUE (boolean_type_node
) = build_int_cst (boolean_type_node
, 1);
10349 /* Define what type to use for size_t. */
10350 if (strcmp (SIZE_TYPE
, "unsigned int") == 0)
10351 size_type_node
= unsigned_type_node
;
10352 else if (strcmp (SIZE_TYPE
, "long unsigned int") == 0)
10353 size_type_node
= long_unsigned_type_node
;
10354 else if (strcmp (SIZE_TYPE
, "long long unsigned int") == 0)
10355 size_type_node
= long_long_unsigned_type_node
;
10356 else if (strcmp (SIZE_TYPE
, "short unsigned int") == 0)
10357 size_type_node
= short_unsigned_type_node
;
10362 size_type_node
= NULL_TREE
;
10363 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
10364 if (int_n_enabled_p
[i
])
10367 sprintf (name
, "__int%d unsigned", int_n_data
[i
].bitsize
);
10369 if (strcmp (name
, SIZE_TYPE
) == 0)
10371 size_type_node
= int_n_trees
[i
].unsigned_type
;
10374 if (size_type_node
== NULL_TREE
)
10375 gcc_unreachable ();
10378 /* Define what type to use for ptrdiff_t. */
10379 if (strcmp (PTRDIFF_TYPE
, "int") == 0)
10380 ptrdiff_type_node
= integer_type_node
;
10381 else if (strcmp (PTRDIFF_TYPE
, "long int") == 0)
10382 ptrdiff_type_node
= long_integer_type_node
;
10383 else if (strcmp (PTRDIFF_TYPE
, "long long int") == 0)
10384 ptrdiff_type_node
= long_long_integer_type_node
;
10385 else if (strcmp (PTRDIFF_TYPE
, "short int") == 0)
10386 ptrdiff_type_node
= short_integer_type_node
;
10389 ptrdiff_type_node
= NULL_TREE
;
10390 for (int i
= 0; i
< NUM_INT_N_ENTS
; i
++)
10391 if (int_n_enabled_p
[i
])
10394 sprintf (name
, "__int%d", int_n_data
[i
].bitsize
);
10395 if (strcmp (name
, PTRDIFF_TYPE
) == 0)
10396 ptrdiff_type_node
= int_n_trees
[i
].signed_type
;
10398 if (ptrdiff_type_node
== NULL_TREE
)
10399 gcc_unreachable ();
10402 /* Fill in the rest of the sized types. Reuse existing type nodes
10404 intQI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (QImode
), 0);
10405 intHI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (HImode
), 0);
10406 intSI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (SImode
), 0);
10407 intDI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (DImode
), 0);
10408 intTI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (TImode
), 0);
10410 unsigned_intQI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (QImode
), 1);
10411 unsigned_intHI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (HImode
), 1);
10412 unsigned_intSI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (SImode
), 1);
10413 unsigned_intDI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (DImode
), 1);
10414 unsigned_intTI_type_node
= make_or_reuse_type (GET_MODE_BITSIZE (TImode
), 1);
10416 /* Don't call build_qualified type for atomics. That routine does
10417 special processing for atomics, and until they are initialized
10418 it's better not to make that call.
10420 Check to see if there is a target override for atomic types. */
10422 atomicQI_type_node
= build_atomic_base (unsigned_intQI_type_node
,
10423 targetm
.atomic_align_for_mode (QImode
));
10424 atomicHI_type_node
= build_atomic_base (unsigned_intHI_type_node
,
10425 targetm
.atomic_align_for_mode (HImode
));
10426 atomicSI_type_node
= build_atomic_base (unsigned_intSI_type_node
,
10427 targetm
.atomic_align_for_mode (SImode
));
10428 atomicDI_type_node
= build_atomic_base (unsigned_intDI_type_node
,
10429 targetm
.atomic_align_for_mode (DImode
));
10430 atomicTI_type_node
= build_atomic_base (unsigned_intTI_type_node
,
10431 targetm
.atomic_align_for_mode (TImode
));
10433 access_public_node
= get_identifier ("public");
10434 access_protected_node
= get_identifier ("protected");
10435 access_private_node
= get_identifier ("private");
10437 /* Define these next since types below may used them. */
10438 integer_zero_node
= build_int_cst (integer_type_node
, 0);
10439 integer_one_node
= build_int_cst (integer_type_node
, 1);
10440 integer_three_node
= build_int_cst (integer_type_node
, 3);
10441 integer_minus_one_node
= build_int_cst (integer_type_node
, -1);
10443 size_zero_node
= size_int (0);
10444 size_one_node
= size_int (1);
10445 bitsize_zero_node
= bitsize_int (0);
10446 bitsize_one_node
= bitsize_int (1);
10447 bitsize_unit_node
= bitsize_int (BITS_PER_UNIT
);
10449 boolean_false_node
= TYPE_MIN_VALUE (boolean_type_node
);
10450 boolean_true_node
= TYPE_MAX_VALUE (boolean_type_node
);
10452 void_type_node
= make_node (VOID_TYPE
);
10453 layout_type (void_type_node
);
10455 /* We are not going to have real types in C with less than byte alignment,
10456 so we might as well not have any types that claim to have it. */
10457 SET_TYPE_ALIGN (void_type_node
, BITS_PER_UNIT
);
10458 TYPE_USER_ALIGN (void_type_node
) = 0;
10460 void_node
= make_node (VOID_CST
);
10461 TREE_TYPE (void_node
) = void_type_node
;
10463 null_pointer_node
= build_int_cst (build_pointer_type (void_type_node
), 0);
10464 layout_type (TREE_TYPE (null_pointer_node
));
10466 ptr_type_node
= build_pointer_type (void_type_node
);
10467 const_ptr_type_node
10468 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
10469 for (unsigned i
= 0;
10470 i
< sizeof (builtin_structptr_types
) / sizeof (builtin_structptr_type
);
10472 builtin_structptr_types
[i
].node
= builtin_structptr_types
[i
].base
;
10474 pointer_sized_int_node
= build_nonstandard_integer_type (POINTER_SIZE
, 1);
10476 float_type_node
= make_node (REAL_TYPE
);
10477 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
10478 layout_type (float_type_node
);
10480 double_type_node
= make_node (REAL_TYPE
);
10481 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
10482 layout_type (double_type_node
);
10484 long_double_type_node
= make_node (REAL_TYPE
);
10485 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
10486 layout_type (long_double_type_node
);
10488 for (i
= 0; i
< NUM_FLOATN_NX_TYPES
; i
++)
10490 int n
= floatn_nx_types
[i
].n
;
10491 bool extended
= floatn_nx_types
[i
].extended
;
10492 scalar_float_mode mode
;
10493 if (!targetm
.floatn_mode (n
, extended
).exists (&mode
))
10495 int precision
= GET_MODE_PRECISION (mode
);
10496 /* Work around the rs6000 KFmode having precision 113 not
10498 const struct real_format
*fmt
= REAL_MODE_FORMAT (mode
);
10499 gcc_assert (fmt
->b
== 2 && fmt
->emin
+ fmt
->emax
== 3);
10500 int min_precision
= fmt
->p
+ ceil_log2 (fmt
->emax
- fmt
->emin
);
10502 gcc_assert (min_precision
== n
);
10503 if (precision
< min_precision
)
10504 precision
= min_precision
;
10505 FLOATN_NX_TYPE_NODE (i
) = make_node (REAL_TYPE
);
10506 TYPE_PRECISION (FLOATN_NX_TYPE_NODE (i
)) = precision
;
10507 layout_type (FLOATN_NX_TYPE_NODE (i
));
10508 SET_TYPE_MODE (FLOATN_NX_TYPE_NODE (i
), mode
);
10511 float_ptr_type_node
= build_pointer_type (float_type_node
);
10512 double_ptr_type_node
= build_pointer_type (double_type_node
);
10513 long_double_ptr_type_node
= build_pointer_type (long_double_type_node
);
10514 integer_ptr_type_node
= build_pointer_type (integer_type_node
);
10516 /* Fixed size integer types. */
10517 uint16_type_node
= make_or_reuse_type (16, 1);
10518 uint32_type_node
= make_or_reuse_type (32, 1);
10519 uint64_type_node
= make_or_reuse_type (64, 1);
10521 /* Decimal float types. */
10522 dfloat32_type_node
= make_node (REAL_TYPE
);
10523 TYPE_PRECISION (dfloat32_type_node
) = DECIMAL32_TYPE_SIZE
;
10524 SET_TYPE_MODE (dfloat32_type_node
, SDmode
);
10525 layout_type (dfloat32_type_node
);
10526 dfloat32_ptr_type_node
= build_pointer_type (dfloat32_type_node
);
10528 dfloat64_type_node
= make_node (REAL_TYPE
);
10529 TYPE_PRECISION (dfloat64_type_node
) = DECIMAL64_TYPE_SIZE
;
10530 SET_TYPE_MODE (dfloat64_type_node
, DDmode
);
10531 layout_type (dfloat64_type_node
);
10532 dfloat64_ptr_type_node
= build_pointer_type (dfloat64_type_node
);
10534 dfloat128_type_node
= make_node (REAL_TYPE
);
10535 TYPE_PRECISION (dfloat128_type_node
) = DECIMAL128_TYPE_SIZE
;
10536 SET_TYPE_MODE (dfloat128_type_node
, TDmode
);
10537 layout_type (dfloat128_type_node
);
10538 dfloat128_ptr_type_node
= build_pointer_type (dfloat128_type_node
);
10540 complex_integer_type_node
= build_complex_type (integer_type_node
, true);
10541 complex_float_type_node
= build_complex_type (float_type_node
, true);
10542 complex_double_type_node
= build_complex_type (double_type_node
, true);
10543 complex_long_double_type_node
= build_complex_type (long_double_type_node
,
10546 for (i
= 0; i
< NUM_FLOATN_NX_TYPES
; i
++)
10548 if (FLOATN_NX_TYPE_NODE (i
) != NULL_TREE
)
10549 COMPLEX_FLOATN_NX_TYPE_NODE (i
)
10550 = build_complex_type (FLOATN_NX_TYPE_NODE (i
));
10553 /* Make fixed-point nodes based on sat/non-sat and signed/unsigned. */
10554 #define MAKE_FIXED_TYPE_NODE(KIND,SIZE) \
10555 sat_ ## KIND ## _type_node = \
10556 make_sat_signed_ ## KIND ## _type (SIZE); \
10557 sat_unsigned_ ## KIND ## _type_node = \
10558 make_sat_unsigned_ ## KIND ## _type (SIZE); \
10559 KIND ## _type_node = make_signed_ ## KIND ## _type (SIZE); \
10560 unsigned_ ## KIND ## _type_node = \
10561 make_unsigned_ ## KIND ## _type (SIZE);
10563 #define MAKE_FIXED_TYPE_NODE_WIDTH(KIND,WIDTH,SIZE) \
10564 sat_ ## WIDTH ## KIND ## _type_node = \
10565 make_sat_signed_ ## KIND ## _type (SIZE); \
10566 sat_unsigned_ ## WIDTH ## KIND ## _type_node = \
10567 make_sat_unsigned_ ## KIND ## _type (SIZE); \
10568 WIDTH ## KIND ## _type_node = make_signed_ ## KIND ## _type (SIZE); \
10569 unsigned_ ## WIDTH ## KIND ## _type_node = \
10570 make_unsigned_ ## KIND ## _type (SIZE);
10572 /* Make fixed-point type nodes based on four different widths. */
10573 #define MAKE_FIXED_TYPE_NODE_FAMILY(N1,N2) \
10574 MAKE_FIXED_TYPE_NODE_WIDTH (N1, short_, SHORT_ ## N2 ## _TYPE_SIZE) \
10575 MAKE_FIXED_TYPE_NODE (N1, N2 ## _TYPE_SIZE) \
10576 MAKE_FIXED_TYPE_NODE_WIDTH (N1, long_, LONG_ ## N2 ## _TYPE_SIZE) \
10577 MAKE_FIXED_TYPE_NODE_WIDTH (N1, long_long_, LONG_LONG_ ## N2 ## _TYPE_SIZE)
10579 /* Make fixed-point mode nodes based on sat/non-sat and signed/unsigned. */
10580 #define MAKE_FIXED_MODE_NODE(KIND,NAME,MODE) \
10581 NAME ## _type_node = \
10582 make_or_reuse_signed_ ## KIND ## _type (GET_MODE_BITSIZE (MODE ## mode)); \
10583 u ## NAME ## _type_node = \
10584 make_or_reuse_unsigned_ ## KIND ## _type \
10585 (GET_MODE_BITSIZE (U ## MODE ## mode)); \
10586 sat_ ## NAME ## _type_node = \
10587 make_or_reuse_sat_signed_ ## KIND ## _type \
10588 (GET_MODE_BITSIZE (MODE ## mode)); \
10589 sat_u ## NAME ## _type_node = \
10590 make_or_reuse_sat_unsigned_ ## KIND ## _type \
10591 (GET_MODE_BITSIZE (U ## MODE ## mode));
10593 /* Fixed-point type and mode nodes. */
10594 MAKE_FIXED_TYPE_NODE_FAMILY (fract
, FRACT
)
10595 MAKE_FIXED_TYPE_NODE_FAMILY (accum
, ACCUM
)
10596 MAKE_FIXED_MODE_NODE (fract
, qq
, QQ
)
10597 MAKE_FIXED_MODE_NODE (fract
, hq
, HQ
)
10598 MAKE_FIXED_MODE_NODE (fract
, sq
, SQ
)
10599 MAKE_FIXED_MODE_NODE (fract
, dq
, DQ
)
10600 MAKE_FIXED_MODE_NODE (fract
, tq
, TQ
)
10601 MAKE_FIXED_MODE_NODE (accum
, ha
, HA
)
10602 MAKE_FIXED_MODE_NODE (accum
, sa
, SA
)
10603 MAKE_FIXED_MODE_NODE (accum
, da
, DA
)
10604 MAKE_FIXED_MODE_NODE (accum
, ta
, TA
)
10607 tree t
= targetm
.build_builtin_va_list ();
10609 /* Many back-ends define record types without setting TYPE_NAME.
10610 If we copied the record type here, we'd keep the original
10611 record type without a name. This breaks name mangling. So,
10612 don't copy record types and let c_common_nodes_and_builtins()
10613 declare the type to be __builtin_va_list. */
10614 if (TREE_CODE (t
) != RECORD_TYPE
)
10615 t
= build_variant_type_copy (t
);
10617 va_list_type_node
= t
;
10621 /* Modify DECL for given flags.
10622 TM_PURE attribute is set only on types, so the function will modify
10623 DECL's type when ECF_TM_PURE is used. */
10626 set_call_expr_flags (tree decl
, int flags
)
10628 if (flags
& ECF_NOTHROW
)
10629 TREE_NOTHROW (decl
) = 1;
10630 if (flags
& ECF_CONST
)
10631 TREE_READONLY (decl
) = 1;
10632 if (flags
& ECF_PURE
)
10633 DECL_PURE_P (decl
) = 1;
10634 if (flags
& ECF_LOOPING_CONST_OR_PURE
)
10635 DECL_LOOPING_CONST_OR_PURE_P (decl
) = 1;
10636 if (flags
& ECF_NOVOPS
)
10637 DECL_IS_NOVOPS (decl
) = 1;
10638 if (flags
& ECF_NORETURN
)
10639 TREE_THIS_VOLATILE (decl
) = 1;
10640 if (flags
& ECF_MALLOC
)
10641 DECL_IS_MALLOC (decl
) = 1;
10642 if (flags
& ECF_RETURNS_TWICE
)
10643 DECL_IS_RETURNS_TWICE (decl
) = 1;
10644 if (flags
& ECF_LEAF
)
10645 DECL_ATTRIBUTES (decl
) = tree_cons (get_identifier ("leaf"),
10646 NULL
, DECL_ATTRIBUTES (decl
));
10647 if (flags
& ECF_COLD
)
10648 DECL_ATTRIBUTES (decl
) = tree_cons (get_identifier ("cold"),
10649 NULL
, DECL_ATTRIBUTES (decl
));
10650 if (flags
& ECF_RET1
)
10651 DECL_ATTRIBUTES (decl
)
10652 = tree_cons (get_identifier ("fn spec"),
10653 build_tree_list (NULL_TREE
, build_string (1, "1")),
10654 DECL_ATTRIBUTES (decl
));
10655 if ((flags
& ECF_TM_PURE
) && flag_tm
)
10656 apply_tm_attr (decl
, get_identifier ("transaction_pure"));
10657 /* Looping const or pure is implied by noreturn.
10658 There is currently no way to declare looping const or looping pure alone. */
10659 gcc_assert (!(flags
& ECF_LOOPING_CONST_OR_PURE
)
10660 || ((flags
& ECF_NORETURN
) && (flags
& (ECF_CONST
| ECF_PURE
))));
10664 /* A subroutine of build_common_builtin_nodes. Define a builtin function. */
10667 local_define_builtin (const char *name
, tree type
, enum built_in_function code
,
10668 const char *library_name
, int ecf_flags
)
10672 decl
= add_builtin_function (name
, type
, code
, BUILT_IN_NORMAL
,
10673 library_name
, NULL_TREE
);
10674 set_call_expr_flags (decl
, ecf_flags
);
10676 set_builtin_decl (code
, decl
, true);
10679 /* Call this function after instantiating all builtins that the language
10680 front end cares about. This will build the rest of the builtins
10681 and internal functions that are relied upon by the tree optimizers and
10685 build_common_builtin_nodes (void)
10690 if (!builtin_decl_explicit_p (BUILT_IN_UNREACHABLE
)
10691 || !builtin_decl_explicit_p (BUILT_IN_ABORT
))
10693 ftype
= build_function_type (void_type_node
, void_list_node
);
10694 if (!builtin_decl_explicit_p (BUILT_IN_UNREACHABLE
))
10695 local_define_builtin ("__builtin_unreachable", ftype
,
10696 BUILT_IN_UNREACHABLE
,
10697 "__builtin_unreachable",
10698 ECF_NOTHROW
| ECF_LEAF
| ECF_NORETURN
10699 | ECF_CONST
| ECF_COLD
);
10700 if (!builtin_decl_explicit_p (BUILT_IN_ABORT
))
10701 local_define_builtin ("__builtin_abort", ftype
, BUILT_IN_ABORT
,
10703 ECF_LEAF
| ECF_NORETURN
| ECF_CONST
| ECF_COLD
);
10706 if (!builtin_decl_explicit_p (BUILT_IN_MEMCPY
)
10707 || !builtin_decl_explicit_p (BUILT_IN_MEMMOVE
))
10709 ftype
= build_function_type_list (ptr_type_node
,
10710 ptr_type_node
, const_ptr_type_node
,
10711 size_type_node
, NULL_TREE
);
10713 if (!builtin_decl_explicit_p (BUILT_IN_MEMCPY
))
10714 local_define_builtin ("__builtin_memcpy", ftype
, BUILT_IN_MEMCPY
,
10715 "memcpy", ECF_NOTHROW
| ECF_LEAF
| ECF_RET1
);
10716 if (!builtin_decl_explicit_p (BUILT_IN_MEMMOVE
))
10717 local_define_builtin ("__builtin_memmove", ftype
, BUILT_IN_MEMMOVE
,
10718 "memmove", ECF_NOTHROW
| ECF_LEAF
| ECF_RET1
);
10721 if (!builtin_decl_explicit_p (BUILT_IN_MEMCMP
))
10723 ftype
= build_function_type_list (integer_type_node
, const_ptr_type_node
,
10724 const_ptr_type_node
, size_type_node
,
10726 local_define_builtin ("__builtin_memcmp", ftype
, BUILT_IN_MEMCMP
,
10727 "memcmp", ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
);
10730 if (!builtin_decl_explicit_p (BUILT_IN_MEMSET
))
10732 ftype
= build_function_type_list (ptr_type_node
,
10733 ptr_type_node
, integer_type_node
,
10734 size_type_node
, NULL_TREE
);
10735 local_define_builtin ("__builtin_memset", ftype
, BUILT_IN_MEMSET
,
10736 "memset", ECF_NOTHROW
| ECF_LEAF
| ECF_RET1
);
10739 /* If we're checking the stack, `alloca' can throw. */
10740 const int alloca_flags
10741 = ECF_MALLOC
| ECF_LEAF
| (flag_stack_check
? 0 : ECF_NOTHROW
);
10743 if (!builtin_decl_explicit_p (BUILT_IN_ALLOCA
))
10745 ftype
= build_function_type_list (ptr_type_node
,
10746 size_type_node
, NULL_TREE
);
10747 local_define_builtin ("__builtin_alloca", ftype
, BUILT_IN_ALLOCA
,
10748 "alloca", alloca_flags
);
10751 ftype
= build_function_type_list (ptr_type_node
, size_type_node
,
10752 size_type_node
, NULL_TREE
);
10753 local_define_builtin ("__builtin_alloca_with_align", ftype
,
10754 BUILT_IN_ALLOCA_WITH_ALIGN
,
10755 "__builtin_alloca_with_align",
10758 ftype
= build_function_type_list (ptr_type_node
, size_type_node
,
10759 size_type_node
, size_type_node
, NULL_TREE
);
10760 local_define_builtin ("__builtin_alloca_with_align_and_max", ftype
,
10761 BUILT_IN_ALLOCA_WITH_ALIGN_AND_MAX
,
10762 "__builtin_alloca_with_align_and_max",
10765 ftype
= build_function_type_list (void_type_node
,
10766 ptr_type_node
, ptr_type_node
,
10767 ptr_type_node
, NULL_TREE
);
10768 local_define_builtin ("__builtin_init_trampoline", ftype
,
10769 BUILT_IN_INIT_TRAMPOLINE
,
10770 "__builtin_init_trampoline", ECF_NOTHROW
| ECF_LEAF
);
10771 local_define_builtin ("__builtin_init_heap_trampoline", ftype
,
10772 BUILT_IN_INIT_HEAP_TRAMPOLINE
,
10773 "__builtin_init_heap_trampoline",
10774 ECF_NOTHROW
| ECF_LEAF
);
10775 local_define_builtin ("__builtin_init_descriptor", ftype
,
10776 BUILT_IN_INIT_DESCRIPTOR
,
10777 "__builtin_init_descriptor", ECF_NOTHROW
| ECF_LEAF
);
10779 ftype
= build_function_type_list (ptr_type_node
, ptr_type_node
, NULL_TREE
);
10780 local_define_builtin ("__builtin_adjust_trampoline", ftype
,
10781 BUILT_IN_ADJUST_TRAMPOLINE
,
10782 "__builtin_adjust_trampoline",
10783 ECF_CONST
| ECF_NOTHROW
);
10784 local_define_builtin ("__builtin_adjust_descriptor", ftype
,
10785 BUILT_IN_ADJUST_DESCRIPTOR
,
10786 "__builtin_adjust_descriptor",
10787 ECF_CONST
| ECF_NOTHROW
);
10789 ftype
= build_function_type_list (void_type_node
,
10790 ptr_type_node
, ptr_type_node
, NULL_TREE
);
10791 local_define_builtin ("__builtin_nonlocal_goto", ftype
,
10792 BUILT_IN_NONLOCAL_GOTO
,
10793 "__builtin_nonlocal_goto",
10794 ECF_NORETURN
| ECF_NOTHROW
);
10796 ftype
= build_function_type_list (void_type_node
,
10797 ptr_type_node
, ptr_type_node
, NULL_TREE
);
10798 local_define_builtin ("__builtin_setjmp_setup", ftype
,
10799 BUILT_IN_SETJMP_SETUP
,
10800 "__builtin_setjmp_setup", ECF_NOTHROW
);
10802 ftype
= build_function_type_list (void_type_node
, ptr_type_node
, NULL_TREE
);
10803 local_define_builtin ("__builtin_setjmp_receiver", ftype
,
10804 BUILT_IN_SETJMP_RECEIVER
,
10805 "__builtin_setjmp_receiver", ECF_NOTHROW
| ECF_LEAF
);
10807 ftype
= build_function_type_list (ptr_type_node
, NULL_TREE
);
10808 local_define_builtin ("__builtin_stack_save", ftype
, BUILT_IN_STACK_SAVE
,
10809 "__builtin_stack_save", ECF_NOTHROW
| ECF_LEAF
);
10811 ftype
= build_function_type_list (void_type_node
, ptr_type_node
, NULL_TREE
);
10812 local_define_builtin ("__builtin_stack_restore", ftype
,
10813 BUILT_IN_STACK_RESTORE
,
10814 "__builtin_stack_restore", ECF_NOTHROW
| ECF_LEAF
);
10816 ftype
= build_function_type_list (integer_type_node
, const_ptr_type_node
,
10817 const_ptr_type_node
, size_type_node
,
10819 local_define_builtin ("__builtin_memcmp_eq", ftype
, BUILT_IN_MEMCMP_EQ
,
10820 "__builtin_memcmp_eq",
10821 ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
);
10823 local_define_builtin ("__builtin_strncmp_eq", ftype
, BUILT_IN_STRNCMP_EQ
,
10824 "__builtin_strncmp_eq",
10825 ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
);
10827 local_define_builtin ("__builtin_strcmp_eq", ftype
, BUILT_IN_STRCMP_EQ
,
10828 "__builtin_strcmp_eq",
10829 ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
);
10831 /* If there's a possibility that we might use the ARM EABI, build the
10832 alternate __cxa_end_cleanup node used to resume from C++. */
10833 if (targetm
.arm_eabi_unwinder
)
10835 ftype
= build_function_type_list (void_type_node
, NULL_TREE
);
10836 local_define_builtin ("__builtin_cxa_end_cleanup", ftype
,
10837 BUILT_IN_CXA_END_CLEANUP
,
10838 "__cxa_end_cleanup", ECF_NORETURN
| ECF_LEAF
);
10841 ftype
= build_function_type_list (void_type_node
, ptr_type_node
, NULL_TREE
);
10842 local_define_builtin ("__builtin_unwind_resume", ftype
,
10843 BUILT_IN_UNWIND_RESUME
,
10844 ((targetm_common
.except_unwind_info (&global_options
)
10846 ? "_Unwind_SjLj_Resume" : "_Unwind_Resume"),
10849 if (builtin_decl_explicit (BUILT_IN_RETURN_ADDRESS
) == NULL_TREE
)
10851 ftype
= build_function_type_list (ptr_type_node
, integer_type_node
,
10853 local_define_builtin ("__builtin_return_address", ftype
,
10854 BUILT_IN_RETURN_ADDRESS
,
10855 "__builtin_return_address",
10859 if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_ENTER
)
10860 || !builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_EXIT
))
10862 ftype
= build_function_type_list (void_type_node
, ptr_type_node
,
10863 ptr_type_node
, NULL_TREE
);
10864 if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_ENTER
))
10865 local_define_builtin ("__cyg_profile_func_enter", ftype
,
10866 BUILT_IN_PROFILE_FUNC_ENTER
,
10867 "__cyg_profile_func_enter", 0);
10868 if (!builtin_decl_explicit_p (BUILT_IN_PROFILE_FUNC_EXIT
))
10869 local_define_builtin ("__cyg_profile_func_exit", ftype
,
10870 BUILT_IN_PROFILE_FUNC_EXIT
,
10871 "__cyg_profile_func_exit", 0);
10874 /* The exception object and filter values from the runtime. The argument
10875 must be zero before exception lowering, i.e. from the front end. After
10876 exception lowering, it will be the region number for the exception
10877 landing pad. These functions are PURE instead of CONST to prevent
10878 them from being hoisted past the exception edge that will initialize
10879 its value in the landing pad. */
10880 ftype
= build_function_type_list (ptr_type_node
,
10881 integer_type_node
, NULL_TREE
);
10882 ecf_flags
= ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
;
10883 /* Only use TM_PURE if we have TM language support. */
10884 if (builtin_decl_explicit_p (BUILT_IN_TM_LOAD_1
))
10885 ecf_flags
|= ECF_TM_PURE
;
10886 local_define_builtin ("__builtin_eh_pointer", ftype
, BUILT_IN_EH_POINTER
,
10887 "__builtin_eh_pointer", ecf_flags
);
10889 tmp
= lang_hooks
.types
.type_for_mode (targetm
.eh_return_filter_mode (), 0);
10890 ftype
= build_function_type_list (tmp
, integer_type_node
, NULL_TREE
);
10891 local_define_builtin ("__builtin_eh_filter", ftype
, BUILT_IN_EH_FILTER
,
10892 "__builtin_eh_filter", ECF_PURE
| ECF_NOTHROW
| ECF_LEAF
);
10894 ftype
= build_function_type_list (void_type_node
,
10895 integer_type_node
, integer_type_node
,
10897 local_define_builtin ("__builtin_eh_copy_values", ftype
,
10898 BUILT_IN_EH_COPY_VALUES
,
10899 "__builtin_eh_copy_values", ECF_NOTHROW
);
10901 /* Complex multiplication and division. These are handled as builtins
10902 rather than optabs because emit_library_call_value doesn't support
10903 complex. Further, we can do slightly better with folding these
10904 beasties if the real and complex parts of the arguments are separate. */
10908 for (mode
= MIN_MODE_COMPLEX_FLOAT
; mode
<= MAX_MODE_COMPLEX_FLOAT
; ++mode
)
10910 char mode_name_buf
[4], *q
;
10912 enum built_in_function mcode
, dcode
;
10913 tree type
, inner_type
;
10914 const char *prefix
= "__";
10916 if (targetm
.libfunc_gnu_prefix
)
10919 type
= lang_hooks
.types
.type_for_mode ((machine_mode
) mode
, 0);
10922 inner_type
= TREE_TYPE (type
);
10924 ftype
= build_function_type_list (type
, inner_type
, inner_type
,
10925 inner_type
, inner_type
, NULL_TREE
);
10927 mcode
= ((enum built_in_function
)
10928 (BUILT_IN_COMPLEX_MUL_MIN
+ mode
- MIN_MODE_COMPLEX_FLOAT
));
10929 dcode
= ((enum built_in_function
)
10930 (BUILT_IN_COMPLEX_DIV_MIN
+ mode
- MIN_MODE_COMPLEX_FLOAT
));
10932 for (p
= GET_MODE_NAME (mode
), q
= mode_name_buf
; *p
; p
++, q
++)
10936 /* For -ftrapping-math these should throw from a former
10937 -fnon-call-exception stmt. */
10938 built_in_names
[mcode
] = concat (prefix
, "mul", mode_name_buf
, "3",
10940 local_define_builtin (built_in_names
[mcode
], ftype
, mcode
,
10941 built_in_names
[mcode
],
10942 ECF_CONST
| ECF_LEAF
);
10944 built_in_names
[dcode
] = concat (prefix
, "div", mode_name_buf
, "3",
10946 local_define_builtin (built_in_names
[dcode
], ftype
, dcode
,
10947 built_in_names
[dcode
],
10948 ECF_CONST
| ECF_LEAF
);
10952 init_internal_fns ();
10955 /* HACK. GROSS. This is absolutely disgusting. I wish there was a
10958 If we requested a pointer to a vector, build up the pointers that
10959 we stripped off while looking for the inner type. Similarly for
10960 return values from functions.
10962 The argument TYPE is the top of the chain, and BOTTOM is the
10963 new type which we will point to. */
10966 reconstruct_complex_type (tree type
, tree bottom
)
10970 if (TREE_CODE (type
) == POINTER_TYPE
)
10972 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
10973 outer
= build_pointer_type_for_mode (inner
, TYPE_MODE (type
),
10974 TYPE_REF_CAN_ALIAS_ALL (type
));
10976 else if (TREE_CODE (type
) == REFERENCE_TYPE
)
10978 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
10979 outer
= build_reference_type_for_mode (inner
, TYPE_MODE (type
),
10980 TYPE_REF_CAN_ALIAS_ALL (type
));
10982 else if (TREE_CODE (type
) == ARRAY_TYPE
)
10984 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
10985 outer
= build_array_type (inner
, TYPE_DOMAIN (type
));
10987 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10989 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
10990 outer
= build_function_type (inner
, TYPE_ARG_TYPES (type
));
10992 else if (TREE_CODE (type
) == METHOD_TYPE
)
10994 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
10995 /* The build_method_type_directly() routine prepends 'this' to argument list,
10996 so we must compensate by getting rid of it. */
10998 = build_method_type_directly
10999 (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type
))),
11001 TREE_CHAIN (TYPE_ARG_TYPES (type
)));
11003 else if (TREE_CODE (type
) == OFFSET_TYPE
)
11005 inner
= reconstruct_complex_type (TREE_TYPE (type
), bottom
);
11006 outer
= build_offset_type (TYPE_OFFSET_BASETYPE (type
), inner
);
11011 return build_type_attribute_qual_variant (outer
, TYPE_ATTRIBUTES (type
),
11012 TYPE_QUALS (type
));
11015 /* Returns a vector tree node given a mode (integer, vector, or BLKmode) and
11018 build_vector_type_for_mode (tree innertype
, machine_mode mode
)
11021 unsigned int bitsize
;
11023 switch (GET_MODE_CLASS (mode
))
11025 case MODE_VECTOR_BOOL
:
11026 case MODE_VECTOR_INT
:
11027 case MODE_VECTOR_FLOAT
:
11028 case MODE_VECTOR_FRACT
:
11029 case MODE_VECTOR_UFRACT
:
11030 case MODE_VECTOR_ACCUM
:
11031 case MODE_VECTOR_UACCUM
:
11032 nunits
= GET_MODE_NUNITS (mode
);
11036 /* Check that there are no leftover bits. */
11037 bitsize
= GET_MODE_BITSIZE (as_a
<scalar_int_mode
> (mode
));
11038 gcc_assert (bitsize
% TREE_INT_CST_LOW (TYPE_SIZE (innertype
)) == 0);
11039 nunits
= bitsize
/ TREE_INT_CST_LOW (TYPE_SIZE (innertype
));
11043 gcc_unreachable ();
11046 return make_vector_type (innertype
, nunits
, mode
);
11049 /* Similarly, but takes the inner type and number of units, which must be
11053 build_vector_type (tree innertype
, poly_int64 nunits
)
11055 return make_vector_type (innertype
, nunits
, VOIDmode
);
11058 /* Build truth vector with specified length and number of units. */
11061 build_truth_vector_type (poly_uint64 nunits
, poly_uint64 vector_size
)
11063 machine_mode mask_mode
11064 = targetm
.vectorize
.get_mask_mode (nunits
, vector_size
).else_blk ();
11067 if (mask_mode
== BLKmode
)
11068 vsize
= vector_size
* BITS_PER_UNIT
;
11070 vsize
= GET_MODE_BITSIZE (mask_mode
);
11072 unsigned HOST_WIDE_INT esize
= vector_element_size (vsize
, nunits
);
11074 tree bool_type
= build_nonstandard_boolean_type (esize
);
11076 return make_vector_type (bool_type
, nunits
, mask_mode
);
11079 /* Returns a vector type corresponding to a comparison of VECTYPE. */
11082 build_same_sized_truth_vector_type (tree vectype
)
11084 if (VECTOR_BOOLEAN_TYPE_P (vectype
))
11087 poly_uint64 size
= GET_MODE_SIZE (TYPE_MODE (vectype
));
11089 if (known_eq (size
, 0U))
11090 size
= tree_to_uhwi (TYPE_SIZE_UNIT (vectype
));
11092 return build_truth_vector_type (TYPE_VECTOR_SUBPARTS (vectype
), size
);
11095 /* Similarly, but builds a variant type with TYPE_VECTOR_OPAQUE set. */
11098 build_opaque_vector_type (tree innertype
, poly_int64 nunits
)
11100 tree t
= make_vector_type (innertype
, nunits
, VOIDmode
);
11102 /* We always build the non-opaque variant before the opaque one,
11103 so if it already exists, it is TYPE_NEXT_VARIANT of this one. */
11104 cand
= TYPE_NEXT_VARIANT (t
);
11106 && TYPE_VECTOR_OPAQUE (cand
)
11107 && check_qualified_type (cand
, t
, TYPE_QUALS (t
)))
11109 /* Othewise build a variant type and make sure to queue it after
11110 the non-opaque type. */
11111 cand
= build_distinct_type_copy (t
);
11112 TYPE_VECTOR_OPAQUE (cand
) = true;
11113 TYPE_CANONICAL (cand
) = TYPE_CANONICAL (t
);
11114 TYPE_NEXT_VARIANT (cand
) = TYPE_NEXT_VARIANT (t
);
11115 TYPE_NEXT_VARIANT (t
) = cand
;
11116 TYPE_MAIN_VARIANT (cand
) = TYPE_MAIN_VARIANT (t
);
11120 /* Return the value of element I of VECTOR_CST T as a wide_int. */
11123 vector_cst_int_elt (const_tree t
, unsigned int i
)
11125 /* First handle elements that are directly encoded. */
11126 unsigned int encoded_nelts
= vector_cst_encoded_nelts (t
);
11127 if (i
< encoded_nelts
)
11128 return wi::to_wide (VECTOR_CST_ENCODED_ELT (t
, i
));
11130 /* Identify the pattern that contains element I and work out the index of
11131 the last encoded element for that pattern. */
11132 unsigned int npatterns
= VECTOR_CST_NPATTERNS (t
);
11133 unsigned int pattern
= i
% npatterns
;
11134 unsigned int count
= i
/ npatterns
;
11135 unsigned int final_i
= encoded_nelts
- npatterns
+ pattern
;
11137 /* If there are no steps, the final encoded value is the right one. */
11138 if (!VECTOR_CST_STEPPED_P (t
))
11139 return wi::to_wide (VECTOR_CST_ENCODED_ELT (t
, final_i
));
11141 /* Otherwise work out the value from the last two encoded elements. */
11142 tree v1
= VECTOR_CST_ENCODED_ELT (t
, final_i
- npatterns
);
11143 tree v2
= VECTOR_CST_ENCODED_ELT (t
, final_i
);
11144 wide_int diff
= wi::to_wide (v2
) - wi::to_wide (v1
);
11145 return wi::to_wide (v2
) + (count
- 2) * diff
;
11148 /* Return the value of element I of VECTOR_CST T. */
11151 vector_cst_elt (const_tree t
, unsigned int i
)
11153 /* First handle elements that are directly encoded. */
11154 unsigned int encoded_nelts
= vector_cst_encoded_nelts (t
);
11155 if (i
< encoded_nelts
)
11156 return VECTOR_CST_ENCODED_ELT (t
, i
);
11158 /* If there are no steps, the final encoded value is the right one. */
11159 if (!VECTOR_CST_STEPPED_P (t
))
11161 /* Identify the pattern that contains element I and work out the index of
11162 the last encoded element for that pattern. */
11163 unsigned int npatterns
= VECTOR_CST_NPATTERNS (t
);
11164 unsigned int pattern
= i
% npatterns
;
11165 unsigned int final_i
= encoded_nelts
- npatterns
+ pattern
;
11166 return VECTOR_CST_ENCODED_ELT (t
, final_i
);
11169 /* Otherwise work out the value from the last two encoded elements. */
11170 return wide_int_to_tree (TREE_TYPE (TREE_TYPE (t
)),
11171 vector_cst_int_elt (t
, i
));
11174 /* Given an initializer INIT, return TRUE if INIT is zero or some
11175 aggregate of zeros. Otherwise return FALSE. If NONZERO is not
11176 null, set *NONZERO if and only if INIT is known not to be all
11177 zeros. The combination of return value of false and *NONZERO
11178 false implies that INIT may but need not be all zeros. Other
11179 combinations indicate definitive answers. */
11182 initializer_zerop (const_tree init
, bool *nonzero
/* = NULL */)
11188 /* Conservatively clear NONZERO and set it only if INIT is definitely
11194 unsigned HOST_WIDE_INT off
= 0;
11196 switch (TREE_CODE (init
))
11199 if (integer_zerop (init
))
11206 /* ??? Note that this is not correct for C4X float formats. There,
11207 a bit pattern of all zeros is 1.0; 0.0 is encoded with the most
11208 negative exponent. */
11209 if (real_zerop (init
)
11210 && !REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (init
)))
11217 if (fixed_zerop (init
))
11224 if (integer_zerop (init
)
11225 || (real_zerop (init
)
11226 && !REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (TREE_REALPART (init
)))
11227 && !REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (TREE_IMAGPART (init
)))))
11234 if (VECTOR_CST_NPATTERNS (init
) == 1
11235 && VECTOR_CST_DUPLICATE_P (init
)
11236 && initializer_zerop (VECTOR_CST_ENCODED_ELT (init
, 0)))
11244 if (TREE_CLOBBER_P (init
))
11247 unsigned HOST_WIDE_INT idx
;
11250 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (init
), idx
, elt
)
11251 if (!initializer_zerop (elt
, nonzero
))
11259 tree arg
= TREE_OPERAND (init
, 0);
11260 if (TREE_CODE (arg
) != ADDR_EXPR
)
11262 tree offset
= TREE_OPERAND (init
, 1);
11263 if (TREE_CODE (offset
) != INTEGER_CST
11264 || !tree_fits_uhwi_p (offset
))
11266 off
= tree_to_uhwi (offset
);
11269 arg
= TREE_OPERAND (arg
, 0);
11270 if (TREE_CODE (arg
) != STRING_CST
)
11274 /* Fall through. */
11278 gcc_assert (off
<= INT_MAX
);
11281 int n
= TREE_STRING_LENGTH (init
);
11285 /* We need to loop through all elements to handle cases like
11286 "\0" and "\0foobar". */
11287 for (i
= 0; i
< n
; ++i
)
11288 if (TREE_STRING_POINTER (init
)[i
] != '\0')
11302 /* Return true if EXPR is an initializer expression in which every element
11303 is a constant that is numerically equal to 0 or 1. The elements do not
11304 need to be equal to each other. */
11307 initializer_each_zero_or_onep (const_tree expr
)
11309 STRIP_ANY_LOCATION_WRAPPER (expr
);
11311 switch (TREE_CODE (expr
))
11314 return integer_zerop (expr
) || integer_onep (expr
);
11317 return real_zerop (expr
) || real_onep (expr
);
11321 unsigned HOST_WIDE_INT nelts
= vector_cst_encoded_nelts (expr
);
11322 if (VECTOR_CST_STEPPED_P (expr
)
11323 && !TYPE_VECTOR_SUBPARTS (TREE_TYPE (expr
)).is_constant (&nelts
))
11326 for (unsigned int i
= 0; i
< nelts
; ++i
)
11328 tree elt
= vector_cst_elt (expr
, i
);
11329 if (!initializer_each_zero_or_onep (elt
))
11341 /* Check if vector VEC consists of all the equal elements and
11342 that the number of elements corresponds to the type of VEC.
11343 The function returns first element of the vector
11344 or NULL_TREE if the vector is not uniform. */
11346 uniform_vector_p (const_tree vec
)
11349 unsigned HOST_WIDE_INT i
, nelts
;
11351 if (vec
== NULL_TREE
)
11354 gcc_assert (VECTOR_TYPE_P (TREE_TYPE (vec
)));
11356 if (TREE_CODE (vec
) == VEC_DUPLICATE_EXPR
)
11357 return TREE_OPERAND (vec
, 0);
11359 else if (TREE_CODE (vec
) == VECTOR_CST
)
11361 if (VECTOR_CST_NPATTERNS (vec
) == 1 && VECTOR_CST_DUPLICATE_P (vec
))
11362 return VECTOR_CST_ENCODED_ELT (vec
, 0);
11366 else if (TREE_CODE (vec
) == CONSTRUCTOR
11367 && TYPE_VECTOR_SUBPARTS (TREE_TYPE (vec
)).is_constant (&nelts
))
11369 first
= error_mark_node
;
11371 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (vec
), i
, t
)
11378 if (!operand_equal_p (first
, t
, 0))
11390 /* If the argument is INTEGER_CST, return it. If the argument is vector
11391 with all elements the same INTEGER_CST, return that INTEGER_CST. Otherwise
11393 Look through location wrappers. */
11396 uniform_integer_cst_p (tree t
)
11398 STRIP_ANY_LOCATION_WRAPPER (t
);
11400 if (TREE_CODE (t
) == INTEGER_CST
)
11403 if (VECTOR_TYPE_P (TREE_TYPE (t
)))
11405 t
= uniform_vector_p (t
);
11406 if (t
&& TREE_CODE (t
) == INTEGER_CST
)
11413 /* If VECTOR_CST T has a single nonzero element, return the index of that
11414 element, otherwise return -1. */
11417 single_nonzero_element (const_tree t
)
11419 unsigned HOST_WIDE_INT nelts
;
11420 unsigned int repeat_nelts
;
11421 if (VECTOR_CST_NELTS (t
).is_constant (&nelts
))
11422 repeat_nelts
= nelts
;
11423 else if (VECTOR_CST_NELTS_PER_PATTERN (t
) == 2)
11425 nelts
= vector_cst_encoded_nelts (t
);
11426 repeat_nelts
= VECTOR_CST_NPATTERNS (t
);
11432 for (unsigned int i
= 0; i
< nelts
; ++i
)
11434 tree elt
= vector_cst_elt (t
, i
);
11435 if (!integer_zerop (elt
) && !real_zerop (elt
))
11437 if (res
>= 0 || i
>= repeat_nelts
)
11445 /* Build an empty statement at location LOC. */
11448 build_empty_stmt (location_t loc
)
11450 tree t
= build1 (NOP_EXPR
, void_type_node
, size_zero_node
);
11451 SET_EXPR_LOCATION (t
, loc
);
11456 /* Build an OpenMP clause with code CODE. LOC is the location of the
11460 build_omp_clause (location_t loc
, enum omp_clause_code code
)
11465 length
= omp_clause_num_ops
[code
];
11466 size
= (sizeof (struct tree_omp_clause
) + (length
- 1) * sizeof (tree
));
11468 record_node_allocation_statistics (OMP_CLAUSE
, size
);
11470 t
= (tree
) ggc_internal_alloc (size
);
11471 memset (t
, 0, size
);
11472 TREE_SET_CODE (t
, OMP_CLAUSE
);
11473 OMP_CLAUSE_SET_CODE (t
, code
);
11474 OMP_CLAUSE_LOCATION (t
) = loc
;
11479 /* Build a tcc_vl_exp object with code CODE and room for LEN operands. LEN
11480 includes the implicit operand count in TREE_OPERAND 0, and so must be >= 1.
11481 Except for the CODE and operand count field, other storage for the
11482 object is initialized to zeros. */
11485 build_vl_exp (enum tree_code code
, int len MEM_STAT_DECL
)
11488 int length
= (len
- 1) * sizeof (tree
) + sizeof (struct tree_exp
);
11490 gcc_assert (TREE_CODE_CLASS (code
) == tcc_vl_exp
);
11491 gcc_assert (len
>= 1);
11493 record_node_allocation_statistics (code
, length
);
11495 t
= ggc_alloc_cleared_tree_node_stat (length PASS_MEM_STAT
);
11497 TREE_SET_CODE (t
, code
);
11499 /* Can't use TREE_OPERAND to store the length because if checking is
11500 enabled, it will try to check the length before we store it. :-P */
11501 t
->exp
.operands
[0] = build_int_cst (sizetype
, len
);
11506 /* Helper function for build_call_* functions; build a CALL_EXPR with
11507 indicated RETURN_TYPE, FN, and NARGS, but do not initialize any of
11508 the argument slots. */
11511 build_call_1 (tree return_type
, tree fn
, int nargs
)
11515 t
= build_vl_exp (CALL_EXPR
, nargs
+ 3);
11516 TREE_TYPE (t
) = return_type
;
11517 CALL_EXPR_FN (t
) = fn
;
11518 CALL_EXPR_STATIC_CHAIN (t
) = NULL
;
11523 /* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
11524 FN and a null static chain slot. NARGS is the number of call arguments
11525 which are specified as "..." arguments. */
11528 build_call_nary (tree return_type
, tree fn
, int nargs
, ...)
11532 va_start (args
, nargs
);
11533 ret
= build_call_valist (return_type
, fn
, nargs
, args
);
11538 /* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
11539 FN and a null static chain slot. NARGS is the number of call arguments
11540 which are specified as a va_list ARGS. */
11543 build_call_valist (tree return_type
, tree fn
, int nargs
, va_list args
)
11548 t
= build_call_1 (return_type
, fn
, nargs
);
11549 for (i
= 0; i
< nargs
; i
++)
11550 CALL_EXPR_ARG (t
, i
) = va_arg (args
, tree
);
11551 process_call_operands (t
);
11555 /* Build a CALL_EXPR of class tcc_vl_exp with the indicated RETURN_TYPE and
11556 FN and a null static chain slot. NARGS is the number of call arguments
11557 which are specified as a tree array ARGS. */
11560 build_call_array_loc (location_t loc
, tree return_type
, tree fn
,
11561 int nargs
, const tree
*args
)
11566 t
= build_call_1 (return_type
, fn
, nargs
);
11567 for (i
= 0; i
< nargs
; i
++)
11568 CALL_EXPR_ARG (t
, i
) = args
[i
];
11569 process_call_operands (t
);
11570 SET_EXPR_LOCATION (t
, loc
);
11574 /* Like build_call_array, but takes a vec. */
11577 build_call_vec (tree return_type
, tree fn
, vec
<tree
, va_gc
> *args
)
11582 ret
= build_call_1 (return_type
, fn
, vec_safe_length (args
));
11583 FOR_EACH_VEC_SAFE_ELT (args
, ix
, t
)
11584 CALL_EXPR_ARG (ret
, ix
) = t
;
11585 process_call_operands (ret
);
11589 /* Conveniently construct a function call expression. FNDECL names the
11590 function to be called and N arguments are passed in the array
11594 build_call_expr_loc_array (location_t loc
, tree fndecl
, int n
, tree
*argarray
)
11596 tree fntype
= TREE_TYPE (fndecl
);
11597 tree fn
= build1 (ADDR_EXPR
, build_pointer_type (fntype
), fndecl
);
11599 return fold_build_call_array_loc (loc
, TREE_TYPE (fntype
), fn
, n
, argarray
);
11602 /* Conveniently construct a function call expression. FNDECL names the
11603 function to be called and the arguments are passed in the vector
11607 build_call_expr_loc_vec (location_t loc
, tree fndecl
, vec
<tree
, va_gc
> *vec
)
11609 return build_call_expr_loc_array (loc
, fndecl
, vec_safe_length (vec
),
11610 vec_safe_address (vec
));
11614 /* Conveniently construct a function call expression. FNDECL names the
11615 function to be called, N is the number of arguments, and the "..."
11616 parameters are the argument expressions. */
11619 build_call_expr_loc (location_t loc
, tree fndecl
, int n
, ...)
11622 tree
*argarray
= XALLOCAVEC (tree
, n
);
11626 for (i
= 0; i
< n
; i
++)
11627 argarray
[i
] = va_arg (ap
, tree
);
11629 return build_call_expr_loc_array (loc
, fndecl
, n
, argarray
);
11632 /* Like build_call_expr_loc (UNKNOWN_LOCATION, ...). Duplicated because
11633 varargs macros aren't supported by all bootstrap compilers. */
11636 build_call_expr (tree fndecl
, int n
, ...)
11639 tree
*argarray
= XALLOCAVEC (tree
, n
);
11643 for (i
= 0; i
< n
; i
++)
11644 argarray
[i
] = va_arg (ap
, tree
);
11646 return build_call_expr_loc_array (UNKNOWN_LOCATION
, fndecl
, n
, argarray
);
11649 /* Build an internal call to IFN, with arguments ARGS[0:N-1] and with return
11650 type TYPE. This is just like CALL_EXPR, except its CALL_EXPR_FN is NULL.
11651 It will get gimplified later into an ordinary internal function. */
11654 build_call_expr_internal_loc_array (location_t loc
, internal_fn ifn
,
11655 tree type
, int n
, const tree
*args
)
11657 tree t
= build_call_1 (type
, NULL_TREE
, n
);
11658 for (int i
= 0; i
< n
; ++i
)
11659 CALL_EXPR_ARG (t
, i
) = args
[i
];
11660 SET_EXPR_LOCATION (t
, loc
);
11661 CALL_EXPR_IFN (t
) = ifn
;
11665 /* Build internal call expression. This is just like CALL_EXPR, except
11666 its CALL_EXPR_FN is NULL. It will get gimplified later into ordinary
11667 internal function. */
11670 build_call_expr_internal_loc (location_t loc
, enum internal_fn ifn
,
11671 tree type
, int n
, ...)
11674 tree
*argarray
= XALLOCAVEC (tree
, n
);
11678 for (i
= 0; i
< n
; i
++)
11679 argarray
[i
] = va_arg (ap
, tree
);
11681 return build_call_expr_internal_loc_array (loc
, ifn
, type
, n
, argarray
);
11684 /* Return a function call to FN, if the target is guaranteed to support it,
11687 N is the number of arguments, passed in the "...", and TYPE is the
11688 type of the return value. */
11691 maybe_build_call_expr_loc (location_t loc
, combined_fn fn
, tree type
,
11695 tree
*argarray
= XALLOCAVEC (tree
, n
);
11699 for (i
= 0; i
< n
; i
++)
11700 argarray
[i
] = va_arg (ap
, tree
);
11702 if (internal_fn_p (fn
))
11704 internal_fn ifn
= as_internal_fn (fn
);
11705 if (direct_internal_fn_p (ifn
))
11707 tree_pair types
= direct_internal_fn_types (ifn
, type
, argarray
);
11708 if (!direct_internal_fn_supported_p (ifn
, types
,
11709 OPTIMIZE_FOR_BOTH
))
11712 return build_call_expr_internal_loc_array (loc
, ifn
, type
, n
, argarray
);
11716 tree fndecl
= builtin_decl_implicit (as_builtin_fn (fn
));
11719 return build_call_expr_loc_array (loc
, fndecl
, n
, argarray
);
11723 /* Return a function call to the appropriate builtin alloca variant.
11725 SIZE is the size to be allocated. ALIGN, if non-zero, is the requested
11726 alignment of the allocated area. MAX_SIZE, if non-negative, is an upper
11727 bound for SIZE in case it is not a fixed value. */
11730 build_alloca_call_expr (tree size
, unsigned int align
, HOST_WIDE_INT max_size
)
11734 tree t
= builtin_decl_explicit (BUILT_IN_ALLOCA_WITH_ALIGN_AND_MAX
);
11736 build_call_expr (t
, 3, size
, size_int (align
), size_int (max_size
));
11738 else if (align
> 0)
11740 tree t
= builtin_decl_explicit (BUILT_IN_ALLOCA_WITH_ALIGN
);
11741 return build_call_expr (t
, 2, size
, size_int (align
));
11745 tree t
= builtin_decl_explicit (BUILT_IN_ALLOCA
);
11746 return build_call_expr (t
, 1, size
);
11750 /* Create a new constant string literal consisting of elements of type
11751 ELTYPE and return a tree node representing char* pointer to it as
11752 an ADDR_EXPR (ARRAY_REF (ELTYPE, ...)). The STRING_CST value is
11753 the LEN bytes at STR (the representation of the string, which may
11757 build_string_literal (int len
, const char *str
,
11758 tree eltype
/* = char_type_node */)
11760 tree t
= build_string (len
, str
);
11761 tree index
= build_index_type (size_int (len
- 1));
11762 eltype
= build_type_variant (eltype
, 1, 0);
11763 tree type
= build_array_type (eltype
, index
);
11764 TREE_TYPE (t
) = type
;
11765 TREE_CONSTANT (t
) = 1;
11766 TREE_READONLY (t
) = 1;
11767 TREE_STATIC (t
) = 1;
11769 type
= build_pointer_type (eltype
);
11770 t
= build1 (ADDR_EXPR
, type
,
11771 build4 (ARRAY_REF
, eltype
,
11772 t
, integer_zero_node
, NULL_TREE
, NULL_TREE
));
11778 /* Return true if T (assumed to be a DECL) must be assigned a memory
11782 needs_to_live_in_memory (const_tree t
)
11784 return (TREE_ADDRESSABLE (t
)
11785 || is_global_var (t
)
11786 || (TREE_CODE (t
) == RESULT_DECL
11787 && !DECL_BY_REFERENCE (t
)
11788 && aggregate_value_p (t
, current_function_decl
)));
11791 /* Return value of a constant X and sign-extend it. */
11794 int_cst_value (const_tree x
)
11796 unsigned bits
= TYPE_PRECISION (TREE_TYPE (x
));
11797 unsigned HOST_WIDE_INT val
= TREE_INT_CST_LOW (x
);
11799 /* Make sure the sign-extended value will fit in a HOST_WIDE_INT. */
11800 gcc_assert (cst_and_fits_in_hwi (x
));
11802 if (bits
< HOST_BITS_PER_WIDE_INT
)
11804 bool negative
= ((val
>> (bits
- 1)) & 1) != 0;
11806 val
|= HOST_WIDE_INT_M1U
<< (bits
- 1) << 1;
11808 val
&= ~(HOST_WIDE_INT_M1U
<< (bits
- 1) << 1);
11814 /* If TYPE is an integral or pointer type, return an integer type with
11815 the same precision which is unsigned iff UNSIGNEDP is true, or itself
11816 if TYPE is already an integer type of signedness UNSIGNEDP.
11817 If TYPE is a floating-point type, return an integer type with the same
11818 bitsize and with the signedness given by UNSIGNEDP; this is useful
11819 when doing bit-level operations on a floating-point value. */
11822 signed_or_unsigned_type_for (int unsignedp
, tree type
)
11824 if (ANY_INTEGRAL_TYPE_P (type
) && TYPE_UNSIGNED (type
) == unsignedp
)
11827 if (TREE_CODE (type
) == VECTOR_TYPE
)
11829 tree inner
= TREE_TYPE (type
);
11830 tree inner2
= signed_or_unsigned_type_for (unsignedp
, inner
);
11833 if (inner
== inner2
)
11835 return build_vector_type (inner2
, TYPE_VECTOR_SUBPARTS (type
));
11838 if (TREE_CODE (type
) == COMPLEX_TYPE
)
11840 tree inner
= TREE_TYPE (type
);
11841 tree inner2
= signed_or_unsigned_type_for (unsignedp
, inner
);
11844 if (inner
== inner2
)
11846 return build_complex_type (inner2
);
11850 if (INTEGRAL_TYPE_P (type
)
11851 || POINTER_TYPE_P (type
)
11852 || TREE_CODE (type
) == OFFSET_TYPE
)
11853 bits
= TYPE_PRECISION (type
);
11854 else if (TREE_CODE (type
) == REAL_TYPE
)
11855 bits
= GET_MODE_BITSIZE (SCALAR_TYPE_MODE (type
));
11859 return build_nonstandard_integer_type (bits
, unsignedp
);
11862 /* If TYPE is an integral or pointer type, return an integer type with
11863 the same precision which is unsigned, or itself if TYPE is already an
11864 unsigned integer type. If TYPE is a floating-point type, return an
11865 unsigned integer type with the same bitsize as TYPE. */
11868 unsigned_type_for (tree type
)
11870 return signed_or_unsigned_type_for (1, type
);
11873 /* If TYPE is an integral or pointer type, return an integer type with
11874 the same precision which is signed, or itself if TYPE is already a
11875 signed integer type. If TYPE is a floating-point type, return a
11876 signed integer type with the same bitsize as TYPE. */
11879 signed_type_for (tree type
)
11881 return signed_or_unsigned_type_for (0, type
);
11884 /* If TYPE is a vector type, return a signed integer vector type with the
11885 same width and number of subparts. Otherwise return boolean_type_node. */
11888 truth_type_for (tree type
)
11890 if (TREE_CODE (type
) == VECTOR_TYPE
)
11892 if (VECTOR_BOOLEAN_TYPE_P (type
))
11894 return build_truth_vector_type (TYPE_VECTOR_SUBPARTS (type
),
11895 GET_MODE_SIZE (TYPE_MODE (type
)));
11898 return boolean_type_node
;
11901 /* Returns the largest value obtainable by casting something in INNER type to
11905 upper_bound_in_type (tree outer
, tree inner
)
11907 unsigned int det
= 0;
11908 unsigned oprec
= TYPE_PRECISION (outer
);
11909 unsigned iprec
= TYPE_PRECISION (inner
);
11912 /* Compute a unique number for every combination. */
11913 det
|= (oprec
> iprec
) ? 4 : 0;
11914 det
|= TYPE_UNSIGNED (outer
) ? 2 : 0;
11915 det
|= TYPE_UNSIGNED (inner
) ? 1 : 0;
11917 /* Determine the exponent to use. */
11922 /* oprec <= iprec, outer: signed, inner: don't care. */
11927 /* oprec <= iprec, outer: unsigned, inner: don't care. */
11931 /* oprec > iprec, outer: signed, inner: signed. */
11935 /* oprec > iprec, outer: signed, inner: unsigned. */
11939 /* oprec > iprec, outer: unsigned, inner: signed. */
11943 /* oprec > iprec, outer: unsigned, inner: unsigned. */
11947 gcc_unreachable ();
11950 return wide_int_to_tree (outer
,
11951 wi::mask (prec
, false, TYPE_PRECISION (outer
)));
11954 /* Returns the smallest value obtainable by casting something in INNER type to
11958 lower_bound_in_type (tree outer
, tree inner
)
11960 unsigned oprec
= TYPE_PRECISION (outer
);
11961 unsigned iprec
= TYPE_PRECISION (inner
);
11963 /* If OUTER type is unsigned, we can definitely cast 0 to OUTER type
11965 if (TYPE_UNSIGNED (outer
)
11966 /* If we are widening something of an unsigned type, OUTER type
11967 contains all values of INNER type. In particular, both INNER
11968 and OUTER types have zero in common. */
11969 || (oprec
> iprec
&& TYPE_UNSIGNED (inner
)))
11970 return build_int_cst (outer
, 0);
11973 /* If we are widening a signed type to another signed type, we
11974 want to obtain -2^^(iprec-1). If we are keeping the
11975 precision or narrowing to a signed type, we want to obtain
11977 unsigned prec
= oprec
> iprec
? iprec
: oprec
;
11978 return wide_int_to_tree (outer
,
11979 wi::mask (prec
- 1, true,
11980 TYPE_PRECISION (outer
)));
11984 /* Return nonzero if two operands that are suitable for PHI nodes are
11985 necessarily equal. Specifically, both ARG0 and ARG1 must be either
11986 SSA_NAME or invariant. Note that this is strictly an optimization.
11987 That is, callers of this function can directly call operand_equal_p
11988 and get the same result, only slower. */
11991 operand_equal_for_phi_arg_p (const_tree arg0
, const_tree arg1
)
11995 if (TREE_CODE (arg0
) == SSA_NAME
|| TREE_CODE (arg1
) == SSA_NAME
)
11997 return operand_equal_p (arg0
, arg1
, 0);
12000 /* Returns number of zeros at the end of binary representation of X. */
12003 num_ending_zeros (const_tree x
)
12005 return build_int_cst (TREE_TYPE (x
), wi::ctz (wi::to_wide (x
)));
12009 #define WALK_SUBTREE(NODE) \
12012 result = walk_tree_1 (&(NODE), func, data, pset, lh); \
12018 /* This is a subroutine of walk_tree that walks field of TYPE that are to
12019 be walked whenever a type is seen in the tree. Rest of operands and return
12020 value are as for walk_tree. */
12023 walk_type_fields (tree type
, walk_tree_fn func
, void *data
,
12024 hash_set
<tree
> *pset
, walk_tree_lh lh
)
12026 tree result
= NULL_TREE
;
12028 switch (TREE_CODE (type
))
12031 case REFERENCE_TYPE
:
12033 /* We have to worry about mutually recursive pointers. These can't
12034 be written in C. They can in Ada. It's pathological, but
12035 there's an ACATS test (c38102a) that checks it. Deal with this
12036 by checking if we're pointing to another pointer, that one
12037 points to another pointer, that one does too, and we have no htab.
12038 If so, get a hash table. We check three levels deep to avoid
12039 the cost of the hash table if we don't need one. */
12040 if (POINTER_TYPE_P (TREE_TYPE (type
))
12041 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (type
)))
12042 && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (TREE_TYPE (type
))))
12045 result
= walk_tree_without_duplicates (&TREE_TYPE (type
),
12056 WALK_SUBTREE (TREE_TYPE (type
));
12060 WALK_SUBTREE (TYPE_METHOD_BASETYPE (type
));
12062 /* Fall through. */
12064 case FUNCTION_TYPE
:
12065 WALK_SUBTREE (TREE_TYPE (type
));
12069 /* We never want to walk into default arguments. */
12070 for (arg
= TYPE_ARG_TYPES (type
); arg
; arg
= TREE_CHAIN (arg
))
12071 WALK_SUBTREE (TREE_VALUE (arg
));
12076 /* Don't follow this nodes's type if a pointer for fear that
12077 we'll have infinite recursion. If we have a PSET, then we
12080 || (!POINTER_TYPE_P (TREE_TYPE (type
))
12081 && TREE_CODE (TREE_TYPE (type
)) != OFFSET_TYPE
))
12082 WALK_SUBTREE (TREE_TYPE (type
));
12083 WALK_SUBTREE (TYPE_DOMAIN (type
));
12087 WALK_SUBTREE (TREE_TYPE (type
));
12088 WALK_SUBTREE (TYPE_OFFSET_BASETYPE (type
));
12098 /* Apply FUNC to all the sub-trees of TP in a pre-order traversal. FUNC is
12099 called with the DATA and the address of each sub-tree. If FUNC returns a
12100 non-NULL value, the traversal is stopped, and the value returned by FUNC
12101 is returned. If PSET is non-NULL it is used to record the nodes visited,
12102 and to avoid visiting a node more than once. */
12105 walk_tree_1 (tree
*tp
, walk_tree_fn func
, void *data
,
12106 hash_set
<tree
> *pset
, walk_tree_lh lh
)
12108 enum tree_code code
;
12112 #define WALK_SUBTREE_TAIL(NODE) \
12116 goto tail_recurse; \
12121 /* Skip empty subtrees. */
12125 /* Don't walk the same tree twice, if the user has requested
12126 that we avoid doing so. */
12127 if (pset
&& pset
->add (*tp
))
12130 /* Call the function. */
12132 result
= (*func
) (tp
, &walk_subtrees
, data
);
12134 /* If we found something, return it. */
12138 code
= TREE_CODE (*tp
);
12140 /* Even if we didn't, FUNC may have decided that there was nothing
12141 interesting below this point in the tree. */
12142 if (!walk_subtrees
)
12144 /* But we still need to check our siblings. */
12145 if (code
== TREE_LIST
)
12146 WALK_SUBTREE_TAIL (TREE_CHAIN (*tp
));
12147 else if (code
== OMP_CLAUSE
)
12148 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12155 result
= (*lh
) (tp
, &walk_subtrees
, func
, data
, pset
);
12156 if (result
|| !walk_subtrees
)
12163 case IDENTIFIER_NODE
:
12170 case PLACEHOLDER_EXPR
:
12174 /* None of these have subtrees other than those already walked
12179 WALK_SUBTREE (TREE_VALUE (*tp
));
12180 WALK_SUBTREE_TAIL (TREE_CHAIN (*tp
));
12185 int len
= TREE_VEC_LENGTH (*tp
);
12190 /* Walk all elements but the first. */
12192 WALK_SUBTREE (TREE_VEC_ELT (*tp
, len
));
12194 /* Now walk the first one as a tail call. */
12195 WALK_SUBTREE_TAIL (TREE_VEC_ELT (*tp
, 0));
12199 WALK_SUBTREE (TREE_REALPART (*tp
));
12200 WALK_SUBTREE_TAIL (TREE_IMAGPART (*tp
));
12204 unsigned HOST_WIDE_INT idx
;
12205 constructor_elt
*ce
;
12207 for (idx
= 0; vec_safe_iterate (CONSTRUCTOR_ELTS (*tp
), idx
, &ce
);
12209 WALK_SUBTREE (ce
->value
);
12214 WALK_SUBTREE_TAIL (TREE_OPERAND (*tp
, 0));
12219 for (decl
= BIND_EXPR_VARS (*tp
); decl
; decl
= DECL_CHAIN (decl
))
12221 /* Walk the DECL_INITIAL and DECL_SIZE. We don't want to walk
12222 into declarations that are just mentioned, rather than
12223 declared; they don't really belong to this part of the tree.
12224 And, we can see cycles: the initializer for a declaration
12225 can refer to the declaration itself. */
12226 WALK_SUBTREE (DECL_INITIAL (decl
));
12227 WALK_SUBTREE (DECL_SIZE (decl
));
12228 WALK_SUBTREE (DECL_SIZE_UNIT (decl
));
12230 WALK_SUBTREE_TAIL (BIND_EXPR_BODY (*tp
));
12233 case STATEMENT_LIST
:
12235 tree_stmt_iterator i
;
12236 for (i
= tsi_start (*tp
); !tsi_end_p (i
); tsi_next (&i
))
12237 WALK_SUBTREE (*tsi_stmt_ptr (i
));
12242 switch (OMP_CLAUSE_CODE (*tp
))
12244 case OMP_CLAUSE_GANG
:
12245 case OMP_CLAUSE__GRIDDIM_
:
12246 WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp
, 1));
12249 case OMP_CLAUSE_ASYNC
:
12250 case OMP_CLAUSE_WAIT
:
12251 case OMP_CLAUSE_WORKER
:
12252 case OMP_CLAUSE_VECTOR
:
12253 case OMP_CLAUSE_NUM_GANGS
:
12254 case OMP_CLAUSE_NUM_WORKERS
:
12255 case OMP_CLAUSE_VECTOR_LENGTH
:
12256 case OMP_CLAUSE_PRIVATE
:
12257 case OMP_CLAUSE_SHARED
:
12258 case OMP_CLAUSE_FIRSTPRIVATE
:
12259 case OMP_CLAUSE_COPYIN
:
12260 case OMP_CLAUSE_COPYPRIVATE
:
12261 case OMP_CLAUSE_FINAL
:
12262 case OMP_CLAUSE_IF
:
12263 case OMP_CLAUSE_NUM_THREADS
:
12264 case OMP_CLAUSE_SCHEDULE
:
12265 case OMP_CLAUSE_UNIFORM
:
12266 case OMP_CLAUSE_DEPEND
:
12267 case OMP_CLAUSE_NONTEMPORAL
:
12268 case OMP_CLAUSE_NUM_TEAMS
:
12269 case OMP_CLAUSE_THREAD_LIMIT
:
12270 case OMP_CLAUSE_DEVICE
:
12271 case OMP_CLAUSE_DIST_SCHEDULE
:
12272 case OMP_CLAUSE_SAFELEN
:
12273 case OMP_CLAUSE_SIMDLEN
:
12274 case OMP_CLAUSE_ORDERED
:
12275 case OMP_CLAUSE_PRIORITY
:
12276 case OMP_CLAUSE_GRAINSIZE
:
12277 case OMP_CLAUSE_NUM_TASKS
:
12278 case OMP_CLAUSE_HINT
:
12279 case OMP_CLAUSE_TO_DECLARE
:
12280 case OMP_CLAUSE_LINK
:
12281 case OMP_CLAUSE_USE_DEVICE_PTR
:
12282 case OMP_CLAUSE_IS_DEVICE_PTR
:
12283 case OMP_CLAUSE__LOOPTEMP_
:
12284 case OMP_CLAUSE__REDUCTEMP_
:
12285 case OMP_CLAUSE__SIMDUID_
:
12286 WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp
, 0));
12289 case OMP_CLAUSE_INDEPENDENT
:
12290 case OMP_CLAUSE_NOWAIT
:
12291 case OMP_CLAUSE_DEFAULT
:
12292 case OMP_CLAUSE_UNTIED
:
12293 case OMP_CLAUSE_MERGEABLE
:
12294 case OMP_CLAUSE_PROC_BIND
:
12295 case OMP_CLAUSE_INBRANCH
:
12296 case OMP_CLAUSE_NOTINBRANCH
:
12297 case OMP_CLAUSE_FOR
:
12298 case OMP_CLAUSE_PARALLEL
:
12299 case OMP_CLAUSE_SECTIONS
:
12300 case OMP_CLAUSE_TASKGROUP
:
12301 case OMP_CLAUSE_NOGROUP
:
12302 case OMP_CLAUSE_THREADS
:
12303 case OMP_CLAUSE_SIMD
:
12304 case OMP_CLAUSE_DEFAULTMAP
:
12305 case OMP_CLAUSE_AUTO
:
12306 case OMP_CLAUSE_SEQ
:
12307 case OMP_CLAUSE_TILE
:
12308 case OMP_CLAUSE__SIMT_
:
12309 case OMP_CLAUSE_IF_PRESENT
:
12310 case OMP_CLAUSE_FINALIZE
:
12311 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12313 case OMP_CLAUSE_LASTPRIVATE
:
12314 WALK_SUBTREE (OMP_CLAUSE_DECL (*tp
));
12315 WALK_SUBTREE (OMP_CLAUSE_LASTPRIVATE_STMT (*tp
));
12316 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12318 case OMP_CLAUSE_COLLAPSE
:
12321 for (i
= 0; i
< 3; i
++)
12322 WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp
, i
));
12323 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12326 case OMP_CLAUSE_LINEAR
:
12327 WALK_SUBTREE (OMP_CLAUSE_DECL (*tp
));
12328 WALK_SUBTREE (OMP_CLAUSE_LINEAR_STEP (*tp
));
12329 WALK_SUBTREE (OMP_CLAUSE_LINEAR_STMT (*tp
));
12330 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12332 case OMP_CLAUSE_ALIGNED
:
12333 case OMP_CLAUSE_FROM
:
12334 case OMP_CLAUSE_TO
:
12335 case OMP_CLAUSE_MAP
:
12336 case OMP_CLAUSE__CACHE_
:
12337 WALK_SUBTREE (OMP_CLAUSE_DECL (*tp
));
12338 WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp
, 1));
12339 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12341 case OMP_CLAUSE_REDUCTION
:
12342 case OMP_CLAUSE_TASK_REDUCTION
:
12343 case OMP_CLAUSE_IN_REDUCTION
:
12346 for (i
= 0; i
< 5; i
++)
12347 WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp
, i
));
12348 WALK_SUBTREE_TAIL (OMP_CLAUSE_CHAIN (*tp
));
12352 gcc_unreachable ();
12360 /* TARGET_EXPRs are peculiar: operands 1 and 3 can be the same.
12361 But, we only want to walk once. */
12362 len
= (TREE_OPERAND (*tp
, 3) == TREE_OPERAND (*tp
, 1)) ? 2 : 3;
12363 for (i
= 0; i
< len
; ++i
)
12364 WALK_SUBTREE (TREE_OPERAND (*tp
, i
));
12365 WALK_SUBTREE_TAIL (TREE_OPERAND (*tp
, len
));
12369 /* If this is a TYPE_DECL, walk into the fields of the type that it's
12370 defining. We only want to walk into these fields of a type in this
12371 case and not in the general case of a mere reference to the type.
12373 The criterion is as follows: if the field can be an expression, it
12374 must be walked only here. This should be in keeping with the fields
12375 that are directly gimplified in gimplify_type_sizes in order for the
12376 mark/copy-if-shared/unmark machinery of the gimplifier to work with
12377 variable-sized types.
12379 Note that DECLs get walked as part of processing the BIND_EXPR. */
12380 if (TREE_CODE (DECL_EXPR_DECL (*tp
)) == TYPE_DECL
)
12382 tree
*type_p
= &TREE_TYPE (DECL_EXPR_DECL (*tp
));
12383 if (TREE_CODE (*type_p
) == ERROR_MARK
)
12386 /* Call the function for the type. See if it returns anything or
12387 doesn't want us to continue. If we are to continue, walk both
12388 the normal fields and those for the declaration case. */
12389 result
= (*func
) (type_p
, &walk_subtrees
, data
);
12390 if (result
|| !walk_subtrees
)
12393 /* But do not walk a pointed-to type since it may itself need to
12394 be walked in the declaration case if it isn't anonymous. */
12395 if (!POINTER_TYPE_P (*type_p
))
12397 result
= walk_type_fields (*type_p
, func
, data
, pset
, lh
);
12402 /* If this is a record type, also walk the fields. */
12403 if (RECORD_OR_UNION_TYPE_P (*type_p
))
12407 for (field
= TYPE_FIELDS (*type_p
); field
;
12408 field
= DECL_CHAIN (field
))
12410 /* We'd like to look at the type of the field, but we can
12411 easily get infinite recursion. So assume it's pointed
12412 to elsewhere in the tree. Also, ignore things that
12414 if (TREE_CODE (field
) != FIELD_DECL
)
12417 WALK_SUBTREE (DECL_FIELD_OFFSET (field
));
12418 WALK_SUBTREE (DECL_SIZE (field
));
12419 WALK_SUBTREE (DECL_SIZE_UNIT (field
));
12420 if (TREE_CODE (*type_p
) == QUAL_UNION_TYPE
)
12421 WALK_SUBTREE (DECL_QUALIFIER (field
));
12425 /* Same for scalar types. */
12426 else if (TREE_CODE (*type_p
) == BOOLEAN_TYPE
12427 || TREE_CODE (*type_p
) == ENUMERAL_TYPE
12428 || TREE_CODE (*type_p
) == INTEGER_TYPE
12429 || TREE_CODE (*type_p
) == FIXED_POINT_TYPE
12430 || TREE_CODE (*type_p
) == REAL_TYPE
)
12432 WALK_SUBTREE (TYPE_MIN_VALUE (*type_p
));
12433 WALK_SUBTREE (TYPE_MAX_VALUE (*type_p
));
12436 WALK_SUBTREE (TYPE_SIZE (*type_p
));
12437 WALK_SUBTREE_TAIL (TYPE_SIZE_UNIT (*type_p
));
12442 if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (code
)))
12446 /* Walk over all the sub-trees of this operand. */
12447 len
= TREE_OPERAND_LENGTH (*tp
);
12449 /* Go through the subtrees. We need to do this in forward order so
12450 that the scope of a FOR_EXPR is handled properly. */
12453 for (i
= 0; i
< len
- 1; ++i
)
12454 WALK_SUBTREE (TREE_OPERAND (*tp
, i
));
12455 WALK_SUBTREE_TAIL (TREE_OPERAND (*tp
, len
- 1));
12458 /* If this is a type, walk the needed fields in the type. */
12459 else if (TYPE_P (*tp
))
12460 return walk_type_fields (*tp
, func
, data
, pset
, lh
);
12464 /* We didn't find what we were looking for. */
12467 #undef WALK_SUBTREE_TAIL
12469 #undef WALK_SUBTREE
12471 /* Like walk_tree, but does not walk duplicate nodes more than once. */
12474 walk_tree_without_duplicates_1 (tree
*tp
, walk_tree_fn func
, void *data
,
12479 hash_set
<tree
> pset
;
12480 result
= walk_tree_1 (tp
, func
, data
, &pset
, lh
);
12486 tree_block (tree t
)
12488 const enum tree_code_class c
= TREE_CODE_CLASS (TREE_CODE (t
));
12490 if (IS_EXPR_CODE_CLASS (c
))
12491 return LOCATION_BLOCK (t
->exp
.locus
);
12492 gcc_unreachable ();
12497 tree_set_block (tree t
, tree b
)
12499 const enum tree_code_class c
= TREE_CODE_CLASS (TREE_CODE (t
));
12501 if (IS_EXPR_CODE_CLASS (c
))
12503 t
->exp
.locus
= set_block (t
->exp
.locus
, b
);
12506 gcc_unreachable ();
12509 /* Create a nameless artificial label and put it in the current
12510 function context. The label has a location of LOC. Returns the
12511 newly created label. */
12514 create_artificial_label (location_t loc
)
12516 tree lab
= build_decl (loc
,
12517 LABEL_DECL
, NULL_TREE
, void_type_node
);
12519 DECL_ARTIFICIAL (lab
) = 1;
12520 DECL_IGNORED_P (lab
) = 1;
12521 DECL_CONTEXT (lab
) = current_function_decl
;
12525 /* Given a tree, try to return a useful variable name that we can use
12526 to prefix a temporary that is being assigned the value of the tree.
12527 I.E. given <temp> = &A, return A. */
12532 tree stripped_decl
;
12535 STRIP_NOPS (stripped_decl
);
12536 if (DECL_P (stripped_decl
) && DECL_NAME (stripped_decl
))
12537 return IDENTIFIER_POINTER (DECL_NAME (stripped_decl
));
12538 else if (TREE_CODE (stripped_decl
) == SSA_NAME
)
12540 tree name
= SSA_NAME_IDENTIFIER (stripped_decl
);
12543 return IDENTIFIER_POINTER (name
);
12547 switch (TREE_CODE (stripped_decl
))
12550 return get_name (TREE_OPERAND (stripped_decl
, 0));
12557 /* Return true if TYPE has a variable argument list. */
12560 stdarg_p (const_tree fntype
)
12562 function_args_iterator args_iter
;
12563 tree n
= NULL_TREE
, t
;
12568 FOREACH_FUNCTION_ARGS (fntype
, t
, args_iter
)
12573 return n
!= NULL_TREE
&& n
!= void_type_node
;
12576 /* Return true if TYPE has a prototype. */
12579 prototype_p (const_tree fntype
)
12583 gcc_assert (fntype
!= NULL_TREE
);
12585 t
= TYPE_ARG_TYPES (fntype
);
12586 return (t
!= NULL_TREE
);
12589 /* If BLOCK is inlined from an __attribute__((__artificial__))
12590 routine, return pointer to location from where it has been
12593 block_nonartificial_location (tree block
)
12595 location_t
*ret
= NULL
;
12597 while (block
&& TREE_CODE (block
) == BLOCK
12598 && BLOCK_ABSTRACT_ORIGIN (block
))
12600 tree ao
= BLOCK_ABSTRACT_ORIGIN (block
);
12601 if (TREE_CODE (ao
) == FUNCTION_DECL
)
12603 /* If AO is an artificial inline, point RET to the
12604 call site locus at which it has been inlined and continue
12605 the loop, in case AO's caller is also an artificial
12607 if (DECL_DECLARED_INLINE_P (ao
)
12608 && lookup_attribute ("artificial", DECL_ATTRIBUTES (ao
)))
12609 ret
= &BLOCK_SOURCE_LOCATION (block
);
12613 else if (TREE_CODE (ao
) != BLOCK
)
12616 block
= BLOCK_SUPERCONTEXT (block
);
12622 /* If EXP is inlined from an __attribute__((__artificial__))
12623 function, return the location of the original call expression. */
12626 tree_nonartificial_location (tree exp
)
12628 location_t
*loc
= block_nonartificial_location (TREE_BLOCK (exp
));
12633 return EXPR_LOCATION (exp
);
12637 /* These are the hash table functions for the hash table of OPTIMIZATION_NODEq
12640 /* Return the hash code X, an OPTIMIZATION_NODE or TARGET_OPTION code. */
12643 cl_option_hasher::hash (tree x
)
12645 const_tree
const t
= x
;
12649 hashval_t hash
= 0;
12651 if (TREE_CODE (t
) == OPTIMIZATION_NODE
)
12653 p
= (const char *)TREE_OPTIMIZATION (t
);
12654 len
= sizeof (struct cl_optimization
);
12657 else if (TREE_CODE (t
) == TARGET_OPTION_NODE
)
12658 return cl_target_option_hash (TREE_TARGET_OPTION (t
));
12661 gcc_unreachable ();
12663 /* assume most opt flags are just 0/1, some are 2-3, and a few might be
12665 for (i
= 0; i
< len
; i
++)
12667 hash
= (hash
<< 4) ^ ((i
<< 2) | p
[i
]);
12672 /* Return nonzero if the value represented by *X (an OPTIMIZATION or
12673 TARGET_OPTION tree node) is the same as that given by *Y, which is the
12677 cl_option_hasher::equal (tree x
, tree y
)
12679 const_tree
const xt
= x
;
12680 const_tree
const yt
= y
;
12682 if (TREE_CODE (xt
) != TREE_CODE (yt
))
12685 if (TREE_CODE (xt
) == OPTIMIZATION_NODE
)
12686 return cl_optimization_option_eq (TREE_OPTIMIZATION (xt
),
12687 TREE_OPTIMIZATION (yt
));
12688 else if (TREE_CODE (xt
) == TARGET_OPTION_NODE
)
12689 return cl_target_option_eq (TREE_TARGET_OPTION (xt
),
12690 TREE_TARGET_OPTION (yt
));
12692 gcc_unreachable ();
12695 /* Build an OPTIMIZATION_NODE based on the options in OPTS. */
12698 build_optimization_node (struct gcc_options
*opts
)
12702 /* Use the cache of optimization nodes. */
12704 cl_optimization_save (TREE_OPTIMIZATION (cl_optimization_node
),
12707 tree
*slot
= cl_option_hash_table
->find_slot (cl_optimization_node
, INSERT
);
12711 /* Insert this one into the hash table. */
12712 t
= cl_optimization_node
;
12715 /* Make a new node for next time round. */
12716 cl_optimization_node
= make_node (OPTIMIZATION_NODE
);
12722 /* Build a TARGET_OPTION_NODE based on the options in OPTS. */
12725 build_target_option_node (struct gcc_options
*opts
)
12729 /* Use the cache of optimization nodes. */
12731 cl_target_option_save (TREE_TARGET_OPTION (cl_target_option_node
),
12734 tree
*slot
= cl_option_hash_table
->find_slot (cl_target_option_node
, INSERT
);
12738 /* Insert this one into the hash table. */
12739 t
= cl_target_option_node
;
12742 /* Make a new node for next time round. */
12743 cl_target_option_node
= make_node (TARGET_OPTION_NODE
);
12749 /* Clear TREE_TARGET_GLOBALS of all TARGET_OPTION_NODE trees,
12750 so that they aren't saved during PCH writing. */
12753 prepare_target_option_nodes_for_pch (void)
12755 hash_table
<cl_option_hasher
>::iterator iter
= cl_option_hash_table
->begin ();
12756 for (; iter
!= cl_option_hash_table
->end (); ++iter
)
12757 if (TREE_CODE (*iter
) == TARGET_OPTION_NODE
)
12758 TREE_TARGET_GLOBALS (*iter
) = NULL
;
12761 /* Determine the "ultimate origin" of a block. */
12764 block_ultimate_origin (const_tree block
)
12766 tree origin
= BLOCK_ABSTRACT_ORIGIN (block
);
12768 if (origin
== NULL_TREE
)
12772 gcc_checking_assert ((DECL_P (origin
)
12773 && DECL_ORIGIN (origin
) == origin
)
12774 || BLOCK_ORIGIN (origin
) == origin
);
12779 /* Return true iff conversion from INNER_TYPE to OUTER_TYPE generates
12783 tree_nop_conversion_p (const_tree outer_type
, const_tree inner_type
)
12785 /* Do not strip casts into or out of differing address spaces. */
12786 if (POINTER_TYPE_P (outer_type
)
12787 && TYPE_ADDR_SPACE (TREE_TYPE (outer_type
)) != ADDR_SPACE_GENERIC
)
12789 if (!POINTER_TYPE_P (inner_type
)
12790 || (TYPE_ADDR_SPACE (TREE_TYPE (outer_type
))
12791 != TYPE_ADDR_SPACE (TREE_TYPE (inner_type
))))
12794 else if (POINTER_TYPE_P (inner_type
)
12795 && TYPE_ADDR_SPACE (TREE_TYPE (inner_type
)) != ADDR_SPACE_GENERIC
)
12797 /* We already know that outer_type is not a pointer with
12798 a non-generic address space. */
12802 /* Use precision rather then machine mode when we can, which gives
12803 the correct answer even for submode (bit-field) types. */
12804 if ((INTEGRAL_TYPE_P (outer_type
)
12805 || POINTER_TYPE_P (outer_type
)
12806 || TREE_CODE (outer_type
) == OFFSET_TYPE
)
12807 && (INTEGRAL_TYPE_P (inner_type
)
12808 || POINTER_TYPE_P (inner_type
)
12809 || TREE_CODE (inner_type
) == OFFSET_TYPE
))
12810 return TYPE_PRECISION (outer_type
) == TYPE_PRECISION (inner_type
);
12812 /* Otherwise fall back on comparing machine modes (e.g. for
12813 aggregate types, floats). */
12814 return TYPE_MODE (outer_type
) == TYPE_MODE (inner_type
);
12817 /* Return true iff conversion in EXP generates no instruction. Mark
12818 it inline so that we fully inline into the stripping functions even
12819 though we have two uses of this function. */
12822 tree_nop_conversion (const_tree exp
)
12824 tree outer_type
, inner_type
;
12826 if (location_wrapper_p (exp
))
12828 if (!CONVERT_EXPR_P (exp
)
12829 && TREE_CODE (exp
) != NON_LVALUE_EXPR
)
12832 outer_type
= TREE_TYPE (exp
);
12833 inner_type
= TREE_TYPE (TREE_OPERAND (exp
, 0));
12834 if (!inner_type
|| inner_type
== error_mark_node
)
12837 return tree_nop_conversion_p (outer_type
, inner_type
);
12840 /* Return true iff conversion in EXP generates no instruction. Don't
12841 consider conversions changing the signedness. */
12844 tree_sign_nop_conversion (const_tree exp
)
12846 tree outer_type
, inner_type
;
12848 if (!tree_nop_conversion (exp
))
12851 outer_type
= TREE_TYPE (exp
);
12852 inner_type
= TREE_TYPE (TREE_OPERAND (exp
, 0));
12854 return (TYPE_UNSIGNED (outer_type
) == TYPE_UNSIGNED (inner_type
)
12855 && POINTER_TYPE_P (outer_type
) == POINTER_TYPE_P (inner_type
));
12858 /* Strip conversions from EXP according to tree_nop_conversion and
12859 return the resulting expression. */
12862 tree_strip_nop_conversions (tree exp
)
12864 while (tree_nop_conversion (exp
))
12865 exp
= TREE_OPERAND (exp
, 0);
12869 /* Strip conversions from EXP according to tree_sign_nop_conversion
12870 and return the resulting expression. */
12873 tree_strip_sign_nop_conversions (tree exp
)
12875 while (tree_sign_nop_conversion (exp
))
12876 exp
= TREE_OPERAND (exp
, 0);
12880 /* Avoid any floating point extensions from EXP. */
12882 strip_float_extensions (tree exp
)
12884 tree sub
, expt
, subt
;
12886 /* For floating point constant look up the narrowest type that can hold
12887 it properly and handle it like (type)(narrowest_type)constant.
12888 This way we can optimize for instance a=a*2.0 where "a" is float
12889 but 2.0 is double constant. */
12890 if (TREE_CODE (exp
) == REAL_CST
&& !DECIMAL_FLOAT_TYPE_P (TREE_TYPE (exp
)))
12892 REAL_VALUE_TYPE orig
;
12895 orig
= TREE_REAL_CST (exp
);
12896 if (TYPE_PRECISION (TREE_TYPE (exp
)) > TYPE_PRECISION (float_type_node
)
12897 && exact_real_truncate (TYPE_MODE (float_type_node
), &orig
))
12898 type
= float_type_node
;
12899 else if (TYPE_PRECISION (TREE_TYPE (exp
))
12900 > TYPE_PRECISION (double_type_node
)
12901 && exact_real_truncate (TYPE_MODE (double_type_node
), &orig
))
12902 type
= double_type_node
;
12904 return build_real_truncate (type
, orig
);
12907 if (!CONVERT_EXPR_P (exp
))
12910 sub
= TREE_OPERAND (exp
, 0);
12911 subt
= TREE_TYPE (sub
);
12912 expt
= TREE_TYPE (exp
);
12914 if (!FLOAT_TYPE_P (subt
))
12917 if (DECIMAL_FLOAT_TYPE_P (expt
) != DECIMAL_FLOAT_TYPE_P (subt
))
12920 if (TYPE_PRECISION (subt
) > TYPE_PRECISION (expt
))
12923 return strip_float_extensions (sub
);
12926 /* Strip out all handled components that produce invariant
12930 strip_invariant_refs (const_tree op
)
12932 while (handled_component_p (op
))
12934 switch (TREE_CODE (op
))
12937 case ARRAY_RANGE_REF
:
12938 if (!is_gimple_constant (TREE_OPERAND (op
, 1))
12939 || TREE_OPERAND (op
, 2) != NULL_TREE
12940 || TREE_OPERAND (op
, 3) != NULL_TREE
)
12944 case COMPONENT_REF
:
12945 if (TREE_OPERAND (op
, 2) != NULL_TREE
)
12951 op
= TREE_OPERAND (op
, 0);
12957 static GTY(()) tree gcc_eh_personality_decl
;
12959 /* Return the GCC personality function decl. */
12962 lhd_gcc_personality (void)
12964 if (!gcc_eh_personality_decl
)
12965 gcc_eh_personality_decl
= build_personality_function ("gcc");
12966 return gcc_eh_personality_decl
;
12969 /* TARGET is a call target of GIMPLE call statement
12970 (obtained by gimple_call_fn). Return true if it is
12971 OBJ_TYPE_REF representing an virtual call of C++ method.
12972 (As opposed to OBJ_TYPE_REF representing objc calls
12973 through a cast where middle-end devirtualization machinery
12977 virtual_method_call_p (const_tree target
)
12979 if (TREE_CODE (target
) != OBJ_TYPE_REF
)
12981 tree t
= TREE_TYPE (target
);
12982 gcc_checking_assert (TREE_CODE (t
) == POINTER_TYPE
);
12984 if (TREE_CODE (t
) == FUNCTION_TYPE
)
12986 gcc_checking_assert (TREE_CODE (t
) == METHOD_TYPE
);
12987 /* If we do not have BINFO associated, it means that type was built
12988 without devirtualization enabled. Do not consider this a virtual
12990 if (!TYPE_BINFO (obj_type_ref_class (target
)))
12995 /* Lookup sub-BINFO of BINFO of TYPE at offset POS. */
12998 lookup_binfo_at_offset (tree binfo
, tree type
, HOST_WIDE_INT pos
)
13001 tree base_binfo
, b
;
13003 for (i
= 0; BINFO_BASE_ITERATE (binfo
, i
, base_binfo
); i
++)
13004 if (pos
== tree_to_shwi (BINFO_OFFSET (base_binfo
))
13005 && types_same_for_odr (TREE_TYPE (base_binfo
), type
))
13007 else if ((b
= lookup_binfo_at_offset (base_binfo
, type
, pos
)) != NULL
)
13012 /* Try to find a base info of BINFO that would have its field decl at offset
13013 OFFSET within the BINFO type and which is of EXPECTED_TYPE. If it can be
13014 found, return, otherwise return NULL_TREE. */
13017 get_binfo_at_offset (tree binfo
, poly_int64 offset
, tree expected_type
)
13019 tree type
= BINFO_TYPE (binfo
);
13023 HOST_WIDE_INT pos
, size
;
13027 if (types_same_for_odr (type
, expected_type
))
13029 if (maybe_lt (offset
, 0))
13032 for (fld
= TYPE_FIELDS (type
); fld
; fld
= DECL_CHAIN (fld
))
13034 if (TREE_CODE (fld
) != FIELD_DECL
|| !DECL_ARTIFICIAL (fld
))
13037 pos
= int_bit_position (fld
);
13038 size
= tree_to_uhwi (DECL_SIZE (fld
));
13039 if (known_in_range_p (offset
, pos
, size
))
13042 if (!fld
|| TREE_CODE (TREE_TYPE (fld
)) != RECORD_TYPE
)
13045 /* Offset 0 indicates the primary base, whose vtable contents are
13046 represented in the binfo for the derived class. */
13047 else if (maybe_ne (offset
, 0))
13049 tree found_binfo
= NULL
, base_binfo
;
13050 /* Offsets in BINFO are in bytes relative to the whole structure
13051 while POS is in bits relative to the containing field. */
13052 int binfo_offset
= (tree_to_shwi (BINFO_OFFSET (binfo
)) + pos
13055 for (i
= 0; BINFO_BASE_ITERATE (binfo
, i
, base_binfo
); i
++)
13056 if (tree_to_shwi (BINFO_OFFSET (base_binfo
)) == binfo_offset
13057 && types_same_for_odr (TREE_TYPE (base_binfo
), TREE_TYPE (fld
)))
13059 found_binfo
= base_binfo
;
13063 binfo
= found_binfo
;
13065 binfo
= lookup_binfo_at_offset (binfo
, TREE_TYPE (fld
),
13069 type
= TREE_TYPE (fld
);
13074 /* Returns true if X is a typedef decl. */
13077 is_typedef_decl (const_tree x
)
13079 return (x
&& TREE_CODE (x
) == TYPE_DECL
13080 && DECL_ORIGINAL_TYPE (x
) != NULL_TREE
);
13083 /* Returns true iff TYPE is a type variant created for a typedef. */
13086 typedef_variant_p (const_tree type
)
13088 return is_typedef_decl (TYPE_NAME (type
));
13091 /* A class to handle converting a string that might contain
13092 control characters, (eg newline, form-feed, etc), into one
13093 in which contains escape sequences instead. */
13095 class escaped_string
13098 escaped_string () { m_owned
= false; m_str
= NULL
; };
13099 ~escaped_string () { if (m_owned
) free (m_str
); }
13100 operator const char *() const { return (const char *) m_str
; }
13101 void escape (const char *);
13107 /* PR 84195: Replace control characters in "unescaped" with their
13108 escaped equivalents. Allow newlines if -fmessage-length has
13109 been set to a non-zero value. This is done here, rather than
13110 where the attribute is recorded as the message length can
13111 change between these two locations. */
13114 escaped_string::escape (const char *unescaped
)
13117 size_t i
, new_i
, len
;
13122 m_str
= const_cast<char *> (unescaped
);
13125 if (unescaped
== NULL
|| *unescaped
== 0)
13128 len
= strlen (unescaped
);
13132 for (i
= 0; i
< len
; i
++)
13134 char c
= unescaped
[i
];
13139 escaped
[new_i
++] = c
;
13143 if (c
!= '\n' || !pp_is_wrapping_line (global_dc
->printer
))
13145 if (escaped
== NULL
)
13147 /* We only allocate space for a new string if we
13148 actually encounter a control character that
13149 needs replacing. */
13150 escaped
= (char *) xmalloc (len
* 2 + 1);
13151 strncpy (escaped
, unescaped
, i
);
13155 escaped
[new_i
++] = '\\';
13159 case '\a': escaped
[new_i
++] = 'a'; break;
13160 case '\b': escaped
[new_i
++] = 'b'; break;
13161 case '\f': escaped
[new_i
++] = 'f'; break;
13162 case '\n': escaped
[new_i
++] = 'n'; break;
13163 case '\r': escaped
[new_i
++] = 'r'; break;
13164 case '\t': escaped
[new_i
++] = 't'; break;
13165 case '\v': escaped
[new_i
++] = 'v'; break;
13166 default: escaped
[new_i
++] = '?'; break;
13170 escaped
[new_i
++] = c
;
13175 escaped
[new_i
] = 0;
13181 /* Warn about a use of an identifier which was marked deprecated. Returns
13182 whether a warning was given. */
13185 warn_deprecated_use (tree node
, tree attr
)
13187 escaped_string msg
;
13189 if (node
== 0 || !warn_deprecated_decl
)
13195 attr
= DECL_ATTRIBUTES (node
);
13196 else if (TYPE_P (node
))
13198 tree decl
= TYPE_STUB_DECL (node
);
13200 attr
= lookup_attribute ("deprecated",
13201 TYPE_ATTRIBUTES (TREE_TYPE (decl
)));
13206 attr
= lookup_attribute ("deprecated", attr
);
13209 msg
.escape (TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr
))));
13214 auto_diagnostic_group d
;
13216 w
= warning (OPT_Wdeprecated_declarations
,
13217 "%qD is deprecated: %s", node
, (const char *) msg
);
13219 w
= warning (OPT_Wdeprecated_declarations
,
13220 "%qD is deprecated", node
);
13222 inform (DECL_SOURCE_LOCATION (node
), "declared here");
13224 else if (TYPE_P (node
))
13226 tree what
= NULL_TREE
;
13227 tree decl
= TYPE_STUB_DECL (node
);
13229 if (TYPE_NAME (node
))
13231 if (TREE_CODE (TYPE_NAME (node
)) == IDENTIFIER_NODE
)
13232 what
= TYPE_NAME (node
);
13233 else if (TREE_CODE (TYPE_NAME (node
)) == TYPE_DECL
13234 && DECL_NAME (TYPE_NAME (node
)))
13235 what
= DECL_NAME (TYPE_NAME (node
));
13238 auto_diagnostic_group d
;
13242 w
= warning (OPT_Wdeprecated_declarations
,
13243 "%qE is deprecated: %s", what
, (const char *) msg
);
13245 w
= warning (OPT_Wdeprecated_declarations
,
13246 "%qE is deprecated", what
);
13251 w
= warning (OPT_Wdeprecated_declarations
,
13252 "type is deprecated: %s", (const char *) msg
);
13254 w
= warning (OPT_Wdeprecated_declarations
,
13255 "type is deprecated");
13259 inform (DECL_SOURCE_LOCATION (decl
), "declared here");
13265 /* Return true if REF has a COMPONENT_REF with a bit-field field declaration
13266 somewhere in it. */
13269 contains_bitfld_component_ref_p (const_tree ref
)
13271 while (handled_component_p (ref
))
13273 if (TREE_CODE (ref
) == COMPONENT_REF
13274 && DECL_BIT_FIELD (TREE_OPERAND (ref
, 1)))
13276 ref
= TREE_OPERAND (ref
, 0);
13282 /* Try to determine whether a TRY_CATCH expression can fall through.
13283 This is a subroutine of block_may_fallthru. */
13286 try_catch_may_fallthru (const_tree stmt
)
13288 tree_stmt_iterator i
;
13290 /* If the TRY block can fall through, the whole TRY_CATCH can
13292 if (block_may_fallthru (TREE_OPERAND (stmt
, 0)))
13295 i
= tsi_start (TREE_OPERAND (stmt
, 1));
13296 switch (TREE_CODE (tsi_stmt (i
)))
13299 /* We expect to see a sequence of CATCH_EXPR trees, each with a
13300 catch expression and a body. The whole TRY_CATCH may fall
13301 through iff any of the catch bodies falls through. */
13302 for (; !tsi_end_p (i
); tsi_next (&i
))
13304 if (block_may_fallthru (CATCH_BODY (tsi_stmt (i
))))
13309 case EH_FILTER_EXPR
:
13310 /* The exception filter expression only matters if there is an
13311 exception. If the exception does not match EH_FILTER_TYPES,
13312 we will execute EH_FILTER_FAILURE, and we will fall through
13313 if that falls through. If the exception does match
13314 EH_FILTER_TYPES, the stack unwinder will continue up the
13315 stack, so we will not fall through. We don't know whether we
13316 will throw an exception which matches EH_FILTER_TYPES or not,
13317 so we just ignore EH_FILTER_TYPES and assume that we might
13318 throw an exception which doesn't match. */
13319 return block_may_fallthru (EH_FILTER_FAILURE (tsi_stmt (i
)));
13322 /* This case represents statements to be executed when an
13323 exception occurs. Those statements are implicitly followed
13324 by a RESX statement to resume execution after the exception.
13325 So in this case the TRY_CATCH never falls through. */
13330 /* Try to determine if we can fall out of the bottom of BLOCK. This guess
13331 need not be 100% accurate; simply be conservative and return true if we
13332 don't know. This is used only to avoid stupidly generating extra code.
13333 If we're wrong, we'll just delete the extra code later. */
13336 block_may_fallthru (const_tree block
)
13338 /* This CONST_CAST is okay because expr_last returns its argument
13339 unmodified and we assign it to a const_tree. */
13340 const_tree stmt
= expr_last (CONST_CAST_TREE (block
));
13342 switch (stmt
? TREE_CODE (stmt
) : ERROR_MARK
)
13346 /* Easy cases. If the last statement of the block implies
13347 control transfer, then we can't fall through. */
13351 /* If there is a default: label or case labels cover all possible
13352 SWITCH_COND values, then the SWITCH_EXPR will transfer control
13353 to some case label in all cases and all we care is whether the
13354 SWITCH_BODY falls through. */
13355 if (SWITCH_ALL_CASES_P (stmt
))
13356 return block_may_fallthru (SWITCH_BODY (stmt
));
13360 if (block_may_fallthru (COND_EXPR_THEN (stmt
)))
13362 return block_may_fallthru (COND_EXPR_ELSE (stmt
));
13365 return block_may_fallthru (BIND_EXPR_BODY (stmt
));
13367 case TRY_CATCH_EXPR
:
13368 return try_catch_may_fallthru (stmt
);
13370 case TRY_FINALLY_EXPR
:
13371 /* The finally clause is always executed after the try clause,
13372 so if it does not fall through, then the try-finally will not
13373 fall through. Otherwise, if the try clause does not fall
13374 through, then when the finally clause falls through it will
13375 resume execution wherever the try clause was going. So the
13376 whole try-finally will only fall through if both the try
13377 clause and the finally clause fall through. */
13378 return (block_may_fallthru (TREE_OPERAND (stmt
, 0))
13379 && block_may_fallthru (TREE_OPERAND (stmt
, 1)));
13382 if (TREE_CODE (TREE_OPERAND (stmt
, 1)) == CALL_EXPR
)
13383 stmt
= TREE_OPERAND (stmt
, 1);
13389 /* Functions that do not return do not fall through. */
13390 return (call_expr_flags (stmt
) & ECF_NORETURN
) == 0;
13392 case CLEANUP_POINT_EXPR
:
13393 return block_may_fallthru (TREE_OPERAND (stmt
, 0));
13396 return block_may_fallthru (TREE_OPERAND (stmt
, 1));
13402 return lang_hooks
.block_may_fallthru (stmt
);
13406 /* True if we are using EH to handle cleanups. */
13407 static bool using_eh_for_cleanups_flag
= false;
13409 /* This routine is called from front ends to indicate eh should be used for
13412 using_eh_for_cleanups (void)
13414 using_eh_for_cleanups_flag
= true;
13417 /* Query whether EH is used for cleanups. */
13419 using_eh_for_cleanups_p (void)
13421 return using_eh_for_cleanups_flag
;
13424 /* Wrapper for tree_code_name to ensure that tree code is valid */
13426 get_tree_code_name (enum tree_code code
)
13428 const char *invalid
= "<invalid tree code>";
13430 if (code
>= MAX_TREE_CODES
)
13433 return tree_code_name
[code
];
13436 /* Drops the TREE_OVERFLOW flag from T. */
13439 drop_tree_overflow (tree t
)
13441 gcc_checking_assert (TREE_OVERFLOW (t
));
13443 /* For tree codes with a sharing machinery re-build the result. */
13444 if (poly_int_tree_p (t
))
13445 return wide_int_to_tree (TREE_TYPE (t
), wi::to_poly_wide (t
));
13447 /* For VECTOR_CST, remove the overflow bits from the encoded elements
13448 and canonicalize the result. */
13449 if (TREE_CODE (t
) == VECTOR_CST
)
13451 tree_vector_builder builder
;
13452 builder
.new_unary_operation (TREE_TYPE (t
), t
, true);
13453 unsigned int count
= builder
.encoded_nelts ();
13454 for (unsigned int i
= 0; i
< count
; ++i
)
13456 tree elt
= VECTOR_CST_ELT (t
, i
);
13457 if (TREE_OVERFLOW (elt
))
13458 elt
= drop_tree_overflow (elt
);
13459 builder
.quick_push (elt
);
13461 return builder
.build ();
13464 /* Otherwise, as all tcc_constants are possibly shared, copy the node
13465 and drop the flag. */
13467 TREE_OVERFLOW (t
) = 0;
13469 /* For constants that contain nested constants, drop the flag
13470 from those as well. */
13471 if (TREE_CODE (t
) == COMPLEX_CST
)
13473 if (TREE_OVERFLOW (TREE_REALPART (t
)))
13474 TREE_REALPART (t
) = drop_tree_overflow (TREE_REALPART (t
));
13475 if (TREE_OVERFLOW (TREE_IMAGPART (t
)))
13476 TREE_IMAGPART (t
) = drop_tree_overflow (TREE_IMAGPART (t
));
13482 /* Given a memory reference expression T, return its base address.
13483 The base address of a memory reference expression is the main
13484 object being referenced. For instance, the base address for
13485 'array[i].fld[j]' is 'array'. You can think of this as stripping
13486 away the offset part from a memory address.
13488 This function calls handled_component_p to strip away all the inner
13489 parts of the memory reference until it reaches the base object. */
13492 get_base_address (tree t
)
13494 while (handled_component_p (t
))
13495 t
= TREE_OPERAND (t
, 0);
13497 if ((TREE_CODE (t
) == MEM_REF
13498 || TREE_CODE (t
) == TARGET_MEM_REF
)
13499 && TREE_CODE (TREE_OPERAND (t
, 0)) == ADDR_EXPR
)
13500 t
= TREE_OPERAND (TREE_OPERAND (t
, 0), 0);
13502 /* ??? Either the alias oracle or all callers need to properly deal
13503 with WITH_SIZE_EXPRs before we can look through those. */
13504 if (TREE_CODE (t
) == WITH_SIZE_EXPR
)
13510 /* Return a tree of sizetype representing the size, in bytes, of the element
13511 of EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
13514 array_ref_element_size (tree exp
)
13516 tree aligned_size
= TREE_OPERAND (exp
, 3);
13517 tree elmt_type
= TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp
, 0)));
13518 location_t loc
= EXPR_LOCATION (exp
);
13520 /* If a size was specified in the ARRAY_REF, it's the size measured
13521 in alignment units of the element type. So multiply by that value. */
13524 /* ??? tree_ssa_useless_type_conversion will eliminate casts to
13525 sizetype from another type of the same width and signedness. */
13526 if (TREE_TYPE (aligned_size
) != sizetype
)
13527 aligned_size
= fold_convert_loc (loc
, sizetype
, aligned_size
);
13528 return size_binop_loc (loc
, MULT_EXPR
, aligned_size
,
13529 size_int (TYPE_ALIGN_UNIT (elmt_type
)));
13532 /* Otherwise, take the size from that of the element type. Substitute
13533 any PLACEHOLDER_EXPR that we have. */
13535 return SUBSTITUTE_PLACEHOLDER_IN_EXPR (TYPE_SIZE_UNIT (elmt_type
), exp
);
13538 /* Return a tree representing the lower bound of the array mentioned in
13539 EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
13542 array_ref_low_bound (tree exp
)
13544 tree domain_type
= TYPE_DOMAIN (TREE_TYPE (TREE_OPERAND (exp
, 0)));
13546 /* If a lower bound is specified in EXP, use it. */
13547 if (TREE_OPERAND (exp
, 2))
13548 return TREE_OPERAND (exp
, 2);
13550 /* Otherwise, if there is a domain type and it has a lower bound, use it,
13551 substituting for a PLACEHOLDER_EXPR as needed. */
13552 if (domain_type
&& TYPE_MIN_VALUE (domain_type
))
13553 return SUBSTITUTE_PLACEHOLDER_IN_EXPR (TYPE_MIN_VALUE (domain_type
), exp
);
13555 /* Otherwise, return a zero of the appropriate type. */
13556 return build_int_cst (TREE_TYPE (TREE_OPERAND (exp
, 1)), 0);
13559 /* Return a tree representing the upper bound of the array mentioned in
13560 EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
13563 array_ref_up_bound (tree exp
)
13565 tree domain_type
= TYPE_DOMAIN (TREE_TYPE (TREE_OPERAND (exp
, 0)));
13567 /* If there is a domain type and it has an upper bound, use it, substituting
13568 for a PLACEHOLDER_EXPR as needed. */
13569 if (domain_type
&& TYPE_MAX_VALUE (domain_type
))
13570 return SUBSTITUTE_PLACEHOLDER_IN_EXPR (TYPE_MAX_VALUE (domain_type
), exp
);
13572 /* Otherwise fail. */
13576 /* Returns true if REF is an array reference or a component reference
13577 to an array at the end of a structure.
13578 If this is the case, the array may be allocated larger
13579 than its upper bound implies. */
13582 array_at_struct_end_p (tree ref
)
13586 if (TREE_CODE (ref
) == ARRAY_REF
13587 || TREE_CODE (ref
) == ARRAY_RANGE_REF
)
13589 atype
= TREE_TYPE (TREE_OPERAND (ref
, 0));
13590 ref
= TREE_OPERAND (ref
, 0);
13592 else if (TREE_CODE (ref
) == COMPONENT_REF
13593 && TREE_CODE (TREE_TYPE (TREE_OPERAND (ref
, 1))) == ARRAY_TYPE
)
13594 atype
= TREE_TYPE (TREE_OPERAND (ref
, 1));
13598 if (TREE_CODE (ref
) == STRING_CST
)
13601 tree ref_to_array
= ref
;
13602 while (handled_component_p (ref
))
13604 /* If the reference chain contains a component reference to a
13605 non-union type and there follows another field the reference
13606 is not at the end of a structure. */
13607 if (TREE_CODE (ref
) == COMPONENT_REF
)
13609 if (TREE_CODE (TREE_TYPE (TREE_OPERAND (ref
, 0))) == RECORD_TYPE
)
13611 tree nextf
= DECL_CHAIN (TREE_OPERAND (ref
, 1));
13612 while (nextf
&& TREE_CODE (nextf
) != FIELD_DECL
)
13613 nextf
= DECL_CHAIN (nextf
);
13618 /* If we have a multi-dimensional array we do not consider
13619 a non-innermost dimension as flex array if the whole
13620 multi-dimensional array is at struct end.
13621 Same for an array of aggregates with a trailing array
13623 else if (TREE_CODE (ref
) == ARRAY_REF
)
13625 else if (TREE_CODE (ref
) == ARRAY_RANGE_REF
)
13627 /* If we view an underlying object as sth else then what we
13628 gathered up to now is what we have to rely on. */
13629 else if (TREE_CODE (ref
) == VIEW_CONVERT_EXPR
)
13632 gcc_unreachable ();
13634 ref
= TREE_OPERAND (ref
, 0);
13637 /* The array now is at struct end. Treat flexible arrays as
13638 always subject to extend, even into just padding constrained by
13639 an underlying decl. */
13640 if (! TYPE_SIZE (atype
)
13641 || ! TYPE_DOMAIN (atype
)
13642 || ! TYPE_MAX_VALUE (TYPE_DOMAIN (atype
)))
13645 if (TREE_CODE (ref
) == MEM_REF
13646 && TREE_CODE (TREE_OPERAND (ref
, 0)) == ADDR_EXPR
)
13647 ref
= TREE_OPERAND (TREE_OPERAND (ref
, 0), 0);
13649 /* If the reference is based on a declared entity, the size of the array
13650 is constrained by its given domain. (Do not trust commons PR/69368). */
13652 && !(flag_unconstrained_commons
13653 && VAR_P (ref
) && DECL_COMMON (ref
))
13654 && DECL_SIZE_UNIT (ref
)
13655 && TREE_CODE (DECL_SIZE_UNIT (ref
)) == INTEGER_CST
)
13657 /* Check whether the array domain covers all of the available
13660 if (TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (atype
))) != INTEGER_CST
13661 || TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (atype
))) != INTEGER_CST
13662 || TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (atype
))) != INTEGER_CST
)
13664 if (! get_addr_base_and_unit_offset (ref_to_array
, &offset
))
13667 /* If at least one extra element fits it is a flexarray. */
13668 if (known_le ((wi::to_offset (TYPE_MAX_VALUE (TYPE_DOMAIN (atype
)))
13669 - wi::to_offset (TYPE_MIN_VALUE (TYPE_DOMAIN (atype
)))
13671 * wi::to_offset (TYPE_SIZE_UNIT (TREE_TYPE (atype
))),
13672 wi::to_offset (DECL_SIZE_UNIT (ref
)) - offset
))
13681 /* Return a tree representing the offset, in bytes, of the field referenced
13682 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
13685 component_ref_field_offset (tree exp
)
13687 tree aligned_offset
= TREE_OPERAND (exp
, 2);
13688 tree field
= TREE_OPERAND (exp
, 1);
13689 location_t loc
= EXPR_LOCATION (exp
);
13691 /* If an offset was specified in the COMPONENT_REF, it's the offset measured
13692 in units of DECL_OFFSET_ALIGN / BITS_PER_UNIT. So multiply by that
13694 if (aligned_offset
)
13696 /* ??? tree_ssa_useless_type_conversion will eliminate casts to
13697 sizetype from another type of the same width and signedness. */
13698 if (TREE_TYPE (aligned_offset
) != sizetype
)
13699 aligned_offset
= fold_convert_loc (loc
, sizetype
, aligned_offset
);
13700 return size_binop_loc (loc
, MULT_EXPR
, aligned_offset
,
13701 size_int (DECL_OFFSET_ALIGN (field
)
13705 /* Otherwise, take the offset from that of the field. Substitute
13706 any PLACEHOLDER_EXPR that we have. */
13708 return SUBSTITUTE_PLACEHOLDER_IN_EXPR (DECL_FIELD_OFFSET (field
), exp
);
13711 /* Return the machine mode of T. For vectors, returns the mode of the
13712 inner type. The main use case is to feed the result to HONOR_NANS,
13713 avoiding the BLKmode that a direct TYPE_MODE (T) might return. */
13716 element_mode (const_tree t
)
13720 if (VECTOR_TYPE_P (t
) || TREE_CODE (t
) == COMPLEX_TYPE
)
13722 return TYPE_MODE (t
);
13725 /* Vector types need to re-check the target flags each time we report
13726 the machine mode. We need to do this because attribute target can
13727 change the result of vector_mode_supported_p and have_regs_of_mode
13728 on a per-function basis. Thus the TYPE_MODE of a VECTOR_TYPE can
13729 change on a per-function basis. */
13730 /* ??? Possibly a better solution is to run through all the types
13731 referenced by a function and re-compute the TYPE_MODE once, rather
13732 than make the TYPE_MODE macro call a function. */
13735 vector_type_mode (const_tree t
)
13739 gcc_assert (TREE_CODE (t
) == VECTOR_TYPE
);
13741 mode
= t
->type_common
.mode
;
13742 if (VECTOR_MODE_P (mode
)
13743 && (!targetm
.vector_mode_supported_p (mode
)
13744 || !have_regs_of_mode
[mode
]))
13746 scalar_int_mode innermode
;
13748 /* For integers, try mapping it to a same-sized scalar mode. */
13749 if (is_int_mode (TREE_TYPE (t
)->type_common
.mode
, &innermode
))
13751 poly_int64 size
= (TYPE_VECTOR_SUBPARTS (t
)
13752 * GET_MODE_BITSIZE (innermode
));
13753 scalar_int_mode mode
;
13754 if (int_mode_for_size (size
, 0).exists (&mode
)
13755 && have_regs_of_mode
[mode
])
13765 /* Verify that basic properties of T match TV and thus T can be a variant of
13766 TV. TV should be the more specified variant (i.e. the main variant). */
13769 verify_type_variant (const_tree t
, tree tv
)
13771 /* Type variant can differ by:
13773 - TYPE_QUALS: TYPE_READONLY, TYPE_VOLATILE, TYPE_ATOMIC, TYPE_RESTRICT,
13774 ENCODE_QUAL_ADDR_SPACE.
13775 - main variant may be TYPE_COMPLETE_P and variant types !TYPE_COMPLETE_P
13776 in this case some values may not be set in the variant types
13777 (see TYPE_COMPLETE_P checks).
13778 - it is possible to have TYPE_ARTIFICIAL variant of non-artifical type
13779 - by TYPE_NAME and attributes (i.e. when variant originate by typedef)
13780 - TYPE_CANONICAL (TYPE_ALIAS_SET is the same among variants)
13781 - by the alignment: TYPE_ALIGN and TYPE_USER_ALIGN
13782 - during LTO by TYPE_CONTEXT if type is TYPE_FILE_SCOPE_P
13783 this is necessary to make it possible to merge types form different TUs
13784 - arrays, pointers and references may have TREE_TYPE that is a variant
13785 of TREE_TYPE of their main variants.
13786 - aggregates may have new TYPE_FIELDS list that list variants of
13787 the main variant TYPE_FIELDS.
13788 - vector types may differ by TYPE_VECTOR_OPAQUE
13791 /* Convenience macro for matching individual fields. */
13792 #define verify_variant_match(flag) \
13794 if (flag (tv) != flag (t)) \
13796 error ("type variant differs by %s", #flag); \
13802 /* tree_base checks. */
13804 verify_variant_match (TREE_CODE
);
13805 /* FIXME: Ada builds non-artificial variants of artificial types. */
13806 if (TYPE_ARTIFICIAL (tv
) && 0)
13807 verify_variant_match (TYPE_ARTIFICIAL
);
13808 if (POINTER_TYPE_P (tv
))
13809 verify_variant_match (TYPE_REF_CAN_ALIAS_ALL
);
13810 /* FIXME: TYPE_SIZES_GIMPLIFIED may differs for Ada build. */
13811 verify_variant_match (TYPE_UNSIGNED
);
13812 verify_variant_match (TYPE_PACKED
);
13813 if (TREE_CODE (t
) == REFERENCE_TYPE
)
13814 verify_variant_match (TYPE_REF_IS_RVALUE
);
13815 if (AGGREGATE_TYPE_P (t
))
13816 verify_variant_match (TYPE_REVERSE_STORAGE_ORDER
);
13818 verify_variant_match (TYPE_SATURATING
);
13819 /* FIXME: This check trigger during libstdc++ build. */
13820 if (RECORD_OR_UNION_TYPE_P (t
) && COMPLETE_TYPE_P (t
) && 0)
13821 verify_variant_match (TYPE_FINAL_P
);
13823 /* tree_type_common checks. */
13825 if (COMPLETE_TYPE_P (t
))
13827 verify_variant_match (TYPE_MODE
);
13828 if (TREE_CODE (TYPE_SIZE (t
)) != PLACEHOLDER_EXPR
13829 && TREE_CODE (TYPE_SIZE (tv
)) != PLACEHOLDER_EXPR
)
13830 verify_variant_match (TYPE_SIZE
);
13831 if (TREE_CODE (TYPE_SIZE_UNIT (t
)) != PLACEHOLDER_EXPR
13832 && TREE_CODE (TYPE_SIZE_UNIT (tv
)) != PLACEHOLDER_EXPR
13833 && TYPE_SIZE_UNIT (t
) != TYPE_SIZE_UNIT (tv
))
13835 gcc_assert (!operand_equal_p (TYPE_SIZE_UNIT (t
),
13836 TYPE_SIZE_UNIT (tv
), 0));
13837 error ("type variant has different TYPE_SIZE_UNIT");
13839 error ("type variant%'s TYPE_SIZE_UNIT");
13840 debug_tree (TYPE_SIZE_UNIT (tv
));
13841 error ("type%'s TYPE_SIZE_UNIT");
13842 debug_tree (TYPE_SIZE_UNIT (t
));
13846 verify_variant_match (TYPE_PRECISION
);
13847 verify_variant_match (TYPE_NEEDS_CONSTRUCTING
);
13848 if (RECORD_OR_UNION_TYPE_P (t
))
13849 verify_variant_match (TYPE_TRANSPARENT_AGGR
);
13850 else if (TREE_CODE (t
) == ARRAY_TYPE
)
13851 verify_variant_match (TYPE_NONALIASED_COMPONENT
);
13852 /* During LTO we merge variant lists from diferent translation units
13853 that may differ BY TYPE_CONTEXT that in turn may point
13854 to TRANSLATION_UNIT_DECL.
13855 Ada also builds variants of types with different TYPE_CONTEXT. */
13856 if ((!in_lto_p
|| !TYPE_FILE_SCOPE_P (t
)) && 0)
13857 verify_variant_match (TYPE_CONTEXT
);
13858 verify_variant_match (TYPE_STRING_FLAG
);
13859 if (TYPE_ALIAS_SET_KNOWN_P (t
))
13861 error ("type variant with TYPE_ALIAS_SET_KNOWN_P");
13866 /* tree_type_non_common checks. */
13868 /* FIXME: C FE uses TYPE_VFIELD to record C_TYPE_INCOMPLETE_VARS
13869 and dangle the pointer from time to time. */
13870 if (RECORD_OR_UNION_TYPE_P (t
) && TYPE_VFIELD (t
) != TYPE_VFIELD (tv
)
13871 && (in_lto_p
|| !TYPE_VFIELD (tv
)
13872 || TREE_CODE (TYPE_VFIELD (tv
)) != TREE_LIST
))
13874 error ("type variant has different TYPE_VFIELD");
13878 if ((TREE_CODE (t
) == ENUMERAL_TYPE
&& COMPLETE_TYPE_P (t
))
13879 || TREE_CODE (t
) == INTEGER_TYPE
13880 || TREE_CODE (t
) == BOOLEAN_TYPE
13881 || TREE_CODE (t
) == REAL_TYPE
13882 || TREE_CODE (t
) == FIXED_POINT_TYPE
)
13884 verify_variant_match (TYPE_MAX_VALUE
);
13885 verify_variant_match (TYPE_MIN_VALUE
);
13887 if (TREE_CODE (t
) == METHOD_TYPE
)
13888 verify_variant_match (TYPE_METHOD_BASETYPE
);
13889 if (TREE_CODE (t
) == OFFSET_TYPE
)
13890 verify_variant_match (TYPE_OFFSET_BASETYPE
);
13891 if (TREE_CODE (t
) == ARRAY_TYPE
)
13892 verify_variant_match (TYPE_ARRAY_MAX_SIZE
);
13893 /* FIXME: Be lax and allow TYPE_BINFO to be missing in variant types
13894 or even type's main variant. This is needed to make bootstrap pass
13895 and the bug seems new in GCC 5.
13896 C++ FE should be updated to make this consistent and we should check
13897 that TYPE_BINFO is always NULL for !COMPLETE_TYPE_P and otherwise there
13898 is a match with main variant.
13900 Also disable the check for Java for now because of parser hack that builds
13901 first an dummy BINFO and then sometimes replace it by real BINFO in some
13903 if (RECORD_OR_UNION_TYPE_P (t
) && TYPE_BINFO (t
) && TYPE_BINFO (tv
)
13904 && TYPE_BINFO (t
) != TYPE_BINFO (tv
)
13905 /* FIXME: Java sometimes keep dump TYPE_BINFOs on variant types.
13906 Since there is no cheap way to tell C++/Java type w/o LTO, do checking
13907 at LTO time only. */
13908 && (in_lto_p
&& odr_type_p (t
)))
13910 error ("type variant has different TYPE_BINFO");
13912 error ("type variant%'s TYPE_BINFO");
13913 debug_tree (TYPE_BINFO (tv
));
13914 error ("type%'s TYPE_BINFO");
13915 debug_tree (TYPE_BINFO (t
));
13919 /* Check various uses of TYPE_VALUES_RAW. */
13920 if (TREE_CODE (t
) == ENUMERAL_TYPE
13921 && TYPE_VALUES (t
))
13922 verify_variant_match (TYPE_VALUES
);
13923 else if (TREE_CODE (t
) == ARRAY_TYPE
)
13924 verify_variant_match (TYPE_DOMAIN
);
13925 /* Permit incomplete variants of complete type. While FEs may complete
13926 all variants, this does not happen for C++ templates in all cases. */
13927 else if (RECORD_OR_UNION_TYPE_P (t
)
13928 && COMPLETE_TYPE_P (t
)
13929 && TYPE_FIELDS (t
) != TYPE_FIELDS (tv
))
13933 /* Fortran builds qualified variants as new records with items of
13934 qualified type. Verify that they looks same. */
13935 for (f1
= TYPE_FIELDS (t
), f2
= TYPE_FIELDS (tv
);
13937 f1
= TREE_CHAIN (f1
), f2
= TREE_CHAIN (f2
))
13938 if (TREE_CODE (f1
) != FIELD_DECL
|| TREE_CODE (f2
) != FIELD_DECL
13939 || (TYPE_MAIN_VARIANT (TREE_TYPE (f1
))
13940 != TYPE_MAIN_VARIANT (TREE_TYPE (f2
))
13941 /* FIXME: gfc_nonrestricted_type builds all types as variants
13942 with exception of pointer types. It deeply copies the type
13943 which means that we may end up with a variant type
13944 referring non-variant pointer. We may change it to
13945 produce types as variants, too, like
13946 objc_get_protocol_qualified_type does. */
13947 && !POINTER_TYPE_P (TREE_TYPE (f1
)))
13948 || DECL_FIELD_OFFSET (f1
) != DECL_FIELD_OFFSET (f2
)
13949 || DECL_FIELD_BIT_OFFSET (f1
) != DECL_FIELD_BIT_OFFSET (f2
))
13953 error ("type variant has different TYPE_FIELDS");
13955 error ("first mismatch is field");
13957 error ("and field");
13962 else if ((TREE_CODE (t
) == FUNCTION_TYPE
|| TREE_CODE (t
) == METHOD_TYPE
))
13963 verify_variant_match (TYPE_ARG_TYPES
);
13964 /* For C++ the qualified variant of array type is really an array type
13965 of qualified TREE_TYPE.
13966 objc builds variants of pointer where pointer to type is a variant, too
13967 in objc_get_protocol_qualified_type. */
13968 if (TREE_TYPE (t
) != TREE_TYPE (tv
)
13969 && ((TREE_CODE (t
) != ARRAY_TYPE
13970 && !POINTER_TYPE_P (t
))
13971 || TYPE_MAIN_VARIANT (TREE_TYPE (t
))
13972 != TYPE_MAIN_VARIANT (TREE_TYPE (tv
))))
13974 error ("type variant has different TREE_TYPE");
13976 error ("type variant%'s TREE_TYPE");
13977 debug_tree (TREE_TYPE (tv
));
13978 error ("type%'s TREE_TYPE");
13979 debug_tree (TREE_TYPE (t
));
13982 if (type_with_alias_set_p (t
)
13983 && !gimple_canonical_types_compatible_p (t
, tv
, false))
13985 error ("type is not compatible with its variant");
13987 error ("type variant%'s TREE_TYPE");
13988 debug_tree (TREE_TYPE (tv
));
13989 error ("type%'s TREE_TYPE");
13990 debug_tree (TREE_TYPE (t
));
13994 #undef verify_variant_match
13998 /* The TYPE_CANONICAL merging machinery. It should closely resemble
13999 the middle-end types_compatible_p function. It needs to avoid
14000 claiming types are different for types that should be treated
14001 the same with respect to TBAA. Canonical types are also used
14002 for IL consistency checks via the useless_type_conversion_p
14003 predicate which does not handle all type kinds itself but falls
14004 back to pointer-comparison of TYPE_CANONICAL for aggregates
14007 /* Return true if TYPE_UNSIGNED of TYPE should be ignored for canonical
14008 type calculation because we need to allow inter-operability between signed
14009 and unsigned variants. */
14012 type_with_interoperable_signedness (const_tree type
)
14014 /* Fortran standard require C_SIGNED_CHAR to be interoperable with both
14015 signed char and unsigned char. Similarly fortran FE builds
14016 C_SIZE_T as signed type, while C defines it unsigned. */
14018 return tree_code_for_canonical_type_merging (TREE_CODE (type
))
14020 && (TYPE_PRECISION (type
) == TYPE_PRECISION (signed_char_type_node
)
14021 || TYPE_PRECISION (type
) == TYPE_PRECISION (size_type_node
));
14024 /* Return true iff T1 and T2 are structurally identical for what
14026 This function is used both by lto.c canonical type merging and by the
14027 verifier. If TRUST_TYPE_CANONICAL we do not look into structure of types
14028 that have TYPE_CANONICAL defined and assume them equivalent. This is useful
14029 only for LTO because only in these cases TYPE_CANONICAL equivalence
14030 correspond to one defined by gimple_canonical_types_compatible_p. */
14033 gimple_canonical_types_compatible_p (const_tree t1
, const_tree t2
,
14034 bool trust_type_canonical
)
14036 /* Type variants should be same as the main variant. When not doing sanity
14037 checking to verify this fact, go to main variants and save some work. */
14038 if (trust_type_canonical
)
14040 t1
= TYPE_MAIN_VARIANT (t1
);
14041 t2
= TYPE_MAIN_VARIANT (t2
);
14044 /* Check first for the obvious case of pointer identity. */
14048 /* Check that we have two types to compare. */
14049 if (t1
== NULL_TREE
|| t2
== NULL_TREE
)
14052 /* We consider complete types always compatible with incomplete type.
14053 This does not make sense for canonical type calculation and thus we
14054 need to ensure that we are never called on it.
14056 FIXME: For more correctness the function probably should have three modes
14057 1) mode assuming that types are complete mathcing their structure
14058 2) mode allowing incomplete types but producing equivalence classes
14059 and thus ignoring all info from complete types
14060 3) mode allowing incomplete types to match complete but checking
14061 compatibility between complete types.
14063 1 and 2 can be used for canonical type calculation. 3 is the real
14064 definition of type compatibility that can be used i.e. for warnings during
14065 declaration merging. */
14067 gcc_assert (!trust_type_canonical
14068 || (type_with_alias_set_p (t1
) && type_with_alias_set_p (t2
)));
14069 /* If the types have been previously registered and found equal
14072 if (TYPE_CANONICAL (t1
) && TYPE_CANONICAL (t2
)
14073 && trust_type_canonical
)
14075 /* Do not use TYPE_CANONICAL of pointer types. For LTO streamed types
14076 they are always NULL, but they are set to non-NULL for types
14077 constructed by build_pointer_type and variants. In this case the
14078 TYPE_CANONICAL is more fine grained than the equivalnce we test (where
14079 all pointers are considered equal. Be sure to not return false
14081 gcc_checking_assert (canonical_type_used_p (t1
)
14082 && canonical_type_used_p (t2
));
14083 return TYPE_CANONICAL (t1
) == TYPE_CANONICAL (t2
);
14086 /* Can't be the same type if the types don't have the same code. */
14087 enum tree_code code
= tree_code_for_canonical_type_merging (TREE_CODE (t1
));
14088 if (code
!= tree_code_for_canonical_type_merging (TREE_CODE (t2
)))
14091 /* Qualifiers do not matter for canonical type comparison purposes. */
14093 /* Void types and nullptr types are always the same. */
14094 if (TREE_CODE (t1
) == VOID_TYPE
14095 || TREE_CODE (t1
) == NULLPTR_TYPE
)
14098 /* Can't be the same type if they have different mode. */
14099 if (TYPE_MODE (t1
) != TYPE_MODE (t2
))
14102 /* Non-aggregate types can be handled cheaply. */
14103 if (INTEGRAL_TYPE_P (t1
)
14104 || SCALAR_FLOAT_TYPE_P (t1
)
14105 || FIXED_POINT_TYPE_P (t1
)
14106 || TREE_CODE (t1
) == VECTOR_TYPE
14107 || TREE_CODE (t1
) == COMPLEX_TYPE
14108 || TREE_CODE (t1
) == OFFSET_TYPE
14109 || POINTER_TYPE_P (t1
))
14111 /* Can't be the same type if they have different recision. */
14112 if (TYPE_PRECISION (t1
) != TYPE_PRECISION (t2
))
14115 /* In some cases the signed and unsigned types are required to be
14117 if (TYPE_UNSIGNED (t1
) != TYPE_UNSIGNED (t2
)
14118 && !type_with_interoperable_signedness (t1
))
14121 /* Fortran's C_SIGNED_CHAR is !TYPE_STRING_FLAG but needs to be
14122 interoperable with "signed char". Unless all frontends are revisited
14123 to agree on these types, we must ignore the flag completely. */
14125 /* Fortran standard define C_PTR type that is compatible with every
14126 C pointer. For this reason we need to glob all pointers into one.
14127 Still pointers in different address spaces are not compatible. */
14128 if (POINTER_TYPE_P (t1
))
14130 if (TYPE_ADDR_SPACE (TREE_TYPE (t1
))
14131 != TYPE_ADDR_SPACE (TREE_TYPE (t2
)))
14135 /* Tail-recurse to components. */
14136 if (TREE_CODE (t1
) == VECTOR_TYPE
14137 || TREE_CODE (t1
) == COMPLEX_TYPE
)
14138 return gimple_canonical_types_compatible_p (TREE_TYPE (t1
),
14140 trust_type_canonical
);
14145 /* Do type-specific comparisons. */
14146 switch (TREE_CODE (t1
))
14149 /* Array types are the same if the element types are the same and
14150 the number of elements are the same. */
14151 if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
),
14152 trust_type_canonical
)
14153 || TYPE_STRING_FLAG (t1
) != TYPE_STRING_FLAG (t2
)
14154 || TYPE_REVERSE_STORAGE_ORDER (t1
) != TYPE_REVERSE_STORAGE_ORDER (t2
)
14155 || TYPE_NONALIASED_COMPONENT (t1
) != TYPE_NONALIASED_COMPONENT (t2
))
14159 tree i1
= TYPE_DOMAIN (t1
);
14160 tree i2
= TYPE_DOMAIN (t2
);
14162 /* For an incomplete external array, the type domain can be
14163 NULL_TREE. Check this condition also. */
14164 if (i1
== NULL_TREE
&& i2
== NULL_TREE
)
14166 else if (i1
== NULL_TREE
|| i2
== NULL_TREE
)
14170 tree min1
= TYPE_MIN_VALUE (i1
);
14171 tree min2
= TYPE_MIN_VALUE (i2
);
14172 tree max1
= TYPE_MAX_VALUE (i1
);
14173 tree max2
= TYPE_MAX_VALUE (i2
);
14175 /* The minimum/maximum values have to be the same. */
14178 && ((TREE_CODE (min1
) == PLACEHOLDER_EXPR
14179 && TREE_CODE (min2
) == PLACEHOLDER_EXPR
)
14180 || operand_equal_p (min1
, min2
, 0))))
14183 && ((TREE_CODE (max1
) == PLACEHOLDER_EXPR
14184 && TREE_CODE (max2
) == PLACEHOLDER_EXPR
)
14185 || operand_equal_p (max1
, max2
, 0)))))
14193 case FUNCTION_TYPE
:
14194 /* Function types are the same if the return type and arguments types
14196 if (!gimple_canonical_types_compatible_p (TREE_TYPE (t1
), TREE_TYPE (t2
),
14197 trust_type_canonical
))
14200 if (TYPE_ARG_TYPES (t1
) == TYPE_ARG_TYPES (t2
))
14204 tree parms1
, parms2
;
14206 for (parms1
= TYPE_ARG_TYPES (t1
), parms2
= TYPE_ARG_TYPES (t2
);
14208 parms1
= TREE_CHAIN (parms1
), parms2
= TREE_CHAIN (parms2
))
14210 if (!gimple_canonical_types_compatible_p
14211 (TREE_VALUE (parms1
), TREE_VALUE (parms2
),
14212 trust_type_canonical
))
14216 if (parms1
|| parms2
)
14224 case QUAL_UNION_TYPE
:
14228 /* Don't try to compare variants of an incomplete type, before
14229 TYPE_FIELDS has been copied around. */
14230 if (!COMPLETE_TYPE_P (t1
) && !COMPLETE_TYPE_P (t2
))
14234 if (TYPE_REVERSE_STORAGE_ORDER (t1
) != TYPE_REVERSE_STORAGE_ORDER (t2
))
14237 /* For aggregate types, all the fields must be the same. */
14238 for (f1
= TYPE_FIELDS (t1
), f2
= TYPE_FIELDS (t2
);
14240 f1
= TREE_CHAIN (f1
), f2
= TREE_CHAIN (f2
))
14242 /* Skip non-fields and zero-sized fields. */
14243 while (f1
&& (TREE_CODE (f1
) != FIELD_DECL
14245 && integer_zerop (DECL_SIZE (f1
)))))
14246 f1
= TREE_CHAIN (f1
);
14247 while (f2
&& (TREE_CODE (f2
) != FIELD_DECL
14249 && integer_zerop (DECL_SIZE (f2
)))))
14250 f2
= TREE_CHAIN (f2
);
14253 /* The fields must have the same name, offset and type. */
14254 if (DECL_NONADDRESSABLE_P (f1
) != DECL_NONADDRESSABLE_P (f2
)
14255 || !gimple_compare_field_offset (f1
, f2
)
14256 || !gimple_canonical_types_compatible_p
14257 (TREE_TYPE (f1
), TREE_TYPE (f2
),
14258 trust_type_canonical
))
14262 /* If one aggregate has more fields than the other, they
14263 are not the same. */
14271 /* Consider all types with language specific trees in them mutually
14272 compatible. This is executed only from verify_type and false
14273 positives can be tolerated. */
14274 gcc_assert (!in_lto_p
);
14279 /* Verify type T. */
14282 verify_type (const_tree t
)
14284 bool error_found
= false;
14285 tree mv
= TYPE_MAIN_VARIANT (t
);
14288 error ("Main variant is not defined");
14289 error_found
= true;
14291 else if (mv
!= TYPE_MAIN_VARIANT (mv
))
14293 error ("TYPE_MAIN_VARIANT has different TYPE_MAIN_VARIANT");
14295 error_found
= true;
14297 else if (t
!= mv
&& !verify_type_variant (t
, mv
))
14298 error_found
= true;
14300 tree ct
= TYPE_CANONICAL (t
);
14303 else if (TYPE_CANONICAL (t
) != ct
)
14305 error ("TYPE_CANONICAL has different TYPE_CANONICAL");
14307 error_found
= true;
14309 /* Method and function types cannot be used to address memory and thus
14310 TYPE_CANONICAL really matters only for determining useless conversions.
14312 FIXME: C++ FE produce declarations of builtin functions that are not
14313 compatible with main variants. */
14314 else if (TREE_CODE (t
) == FUNCTION_TYPE
)
14317 /* FIXME: gimple_canonical_types_compatible_p cannot compare types
14318 with variably sized arrays because their sizes possibly
14319 gimplified to different variables. */
14320 && !variably_modified_type_p (ct
, NULL
)
14321 && !gimple_canonical_types_compatible_p (t
, ct
, false)
14322 && COMPLETE_TYPE_P (t
))
14324 error ("TYPE_CANONICAL is not compatible");
14326 error_found
= true;
14329 if (COMPLETE_TYPE_P (t
) && TYPE_CANONICAL (t
)
14330 && TYPE_MODE (t
) != TYPE_MODE (TYPE_CANONICAL (t
)))
14332 error ("TYPE_MODE of TYPE_CANONICAL is not compatible");
14334 error_found
= true;
14336 if (TYPE_MAIN_VARIANT (t
) == t
&& ct
&& TYPE_MAIN_VARIANT (ct
) != ct
)
14338 error ("TYPE_CANONICAL of main variant is not main variant");
14340 debug_tree (TYPE_MAIN_VARIANT (ct
));
14341 error_found
= true;
14345 /* Check various uses of TYPE_MIN_VALUE_RAW. */
14346 if (RECORD_OR_UNION_TYPE_P (t
))
14348 /* FIXME: C FE uses TYPE_VFIELD to record C_TYPE_INCOMPLETE_VARS
14349 and danagle the pointer from time to time. */
14350 if (TYPE_VFIELD (t
)
14351 && TREE_CODE (TYPE_VFIELD (t
)) != FIELD_DECL
14352 && TREE_CODE (TYPE_VFIELD (t
)) != TREE_LIST
)
14354 error ("TYPE_VFIELD is not FIELD_DECL nor TREE_LIST");
14355 debug_tree (TYPE_VFIELD (t
));
14356 error_found
= true;
14359 else if (TREE_CODE (t
) == POINTER_TYPE
)
14361 if (TYPE_NEXT_PTR_TO (t
)
14362 && TREE_CODE (TYPE_NEXT_PTR_TO (t
)) != POINTER_TYPE
)
14364 error ("TYPE_NEXT_PTR_TO is not POINTER_TYPE");
14365 debug_tree (TYPE_NEXT_PTR_TO (t
));
14366 error_found
= true;
14369 else if (TREE_CODE (t
) == REFERENCE_TYPE
)
14371 if (TYPE_NEXT_REF_TO (t
)
14372 && TREE_CODE (TYPE_NEXT_REF_TO (t
)) != REFERENCE_TYPE
)
14374 error ("TYPE_NEXT_REF_TO is not REFERENCE_TYPE");
14375 debug_tree (TYPE_NEXT_REF_TO (t
));
14376 error_found
= true;
14379 else if (INTEGRAL_TYPE_P (t
) || TREE_CODE (t
) == REAL_TYPE
14380 || TREE_CODE (t
) == FIXED_POINT_TYPE
)
14382 /* FIXME: The following check should pass:
14383 useless_type_conversion_p (const_cast <tree> (t),
14384 TREE_TYPE (TYPE_MIN_VALUE (t))
14385 but does not for C sizetypes in LTO. */
14388 /* Check various uses of TYPE_MAXVAL_RAW. */
14389 if (RECORD_OR_UNION_TYPE_P (t
))
14391 if (!TYPE_BINFO (t
))
14393 else if (TREE_CODE (TYPE_BINFO (t
)) != TREE_BINFO
)
14395 error ("TYPE_BINFO is not TREE_BINFO");
14396 debug_tree (TYPE_BINFO (t
));
14397 error_found
= true;
14399 else if (TREE_TYPE (TYPE_BINFO (t
)) != TYPE_MAIN_VARIANT (t
))
14401 error ("TYPE_BINFO type is not TYPE_MAIN_VARIANT");
14402 debug_tree (TREE_TYPE (TYPE_BINFO (t
)));
14403 error_found
= true;
14406 else if (TREE_CODE (t
) == FUNCTION_TYPE
|| TREE_CODE (t
) == METHOD_TYPE
)
14408 if (TYPE_METHOD_BASETYPE (t
)
14409 && TREE_CODE (TYPE_METHOD_BASETYPE (t
)) != RECORD_TYPE
14410 && TREE_CODE (TYPE_METHOD_BASETYPE (t
)) != UNION_TYPE
)
14412 error ("TYPE_METHOD_BASETYPE is not record nor union");
14413 debug_tree (TYPE_METHOD_BASETYPE (t
));
14414 error_found
= true;
14417 else if (TREE_CODE (t
) == OFFSET_TYPE
)
14419 if (TYPE_OFFSET_BASETYPE (t
)
14420 && TREE_CODE (TYPE_OFFSET_BASETYPE (t
)) != RECORD_TYPE
14421 && TREE_CODE (TYPE_OFFSET_BASETYPE (t
)) != UNION_TYPE
)
14423 error ("TYPE_OFFSET_BASETYPE is not record nor union");
14424 debug_tree (TYPE_OFFSET_BASETYPE (t
));
14425 error_found
= true;
14428 else if (INTEGRAL_TYPE_P (t
) || TREE_CODE (t
) == REAL_TYPE
14429 || TREE_CODE (t
) == FIXED_POINT_TYPE
)
14431 /* FIXME: The following check should pass:
14432 useless_type_conversion_p (const_cast <tree> (t),
14433 TREE_TYPE (TYPE_MAX_VALUE (t))
14434 but does not for C sizetypes in LTO. */
14436 else if (TREE_CODE (t
) == ARRAY_TYPE
)
14438 if (TYPE_ARRAY_MAX_SIZE (t
)
14439 && TREE_CODE (TYPE_ARRAY_MAX_SIZE (t
)) != INTEGER_CST
)
14441 error ("TYPE_ARRAY_MAX_SIZE not INTEGER_CST");
14442 debug_tree (TYPE_ARRAY_MAX_SIZE (t
));
14443 error_found
= true;
14446 else if (TYPE_MAX_VALUE_RAW (t
))
14448 error ("TYPE_MAX_VALUE_RAW non-NULL");
14449 debug_tree (TYPE_MAX_VALUE_RAW (t
));
14450 error_found
= true;
14453 if (TYPE_LANG_SLOT_1 (t
) && in_lto_p
)
14455 error ("TYPE_LANG_SLOT_1 (binfo) field is non-NULL");
14456 debug_tree (TYPE_LANG_SLOT_1 (t
));
14457 error_found
= true;
14460 /* Check various uses of TYPE_VALUES_RAW. */
14461 if (TREE_CODE (t
) == ENUMERAL_TYPE
)
14462 for (tree l
= TYPE_VALUES (t
); l
; l
= TREE_CHAIN (l
))
14464 tree value
= TREE_VALUE (l
);
14465 tree name
= TREE_PURPOSE (l
);
14467 /* C FE porduce INTEGER_CST of INTEGER_TYPE, while C++ FE uses
14468 CONST_DECL of ENUMERAL TYPE. */
14469 if (TREE_CODE (value
) != INTEGER_CST
&& TREE_CODE (value
) != CONST_DECL
)
14471 error ("Enum value is not CONST_DECL or INTEGER_CST");
14472 debug_tree (value
);
14474 error_found
= true;
14476 if (TREE_CODE (TREE_TYPE (value
)) != INTEGER_TYPE
14477 && !useless_type_conversion_p (const_cast <tree
> (t
), TREE_TYPE (value
)))
14479 error ("Enum value type is not INTEGER_TYPE nor convertible to the enum");
14480 debug_tree (value
);
14482 error_found
= true;
14484 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
14486 error ("Enum value name is not IDENTIFIER_NODE");
14487 debug_tree (value
);
14489 error_found
= true;
14492 else if (TREE_CODE (t
) == ARRAY_TYPE
)
14494 if (TYPE_DOMAIN (t
) && TREE_CODE (TYPE_DOMAIN (t
)) != INTEGER_TYPE
)
14496 error ("Array TYPE_DOMAIN is not integer type");
14497 debug_tree (TYPE_DOMAIN (t
));
14498 error_found
= true;
14501 else if (RECORD_OR_UNION_TYPE_P (t
))
14503 if (TYPE_FIELDS (t
) && !COMPLETE_TYPE_P (t
) && in_lto_p
)
14505 error ("TYPE_FIELDS defined in incomplete type");
14506 error_found
= true;
14508 for (tree fld
= TYPE_FIELDS (t
); fld
; fld
= TREE_CHAIN (fld
))
14510 /* TODO: verify properties of decls. */
14511 if (TREE_CODE (fld
) == FIELD_DECL
)
14513 else if (TREE_CODE (fld
) == TYPE_DECL
)
14515 else if (TREE_CODE (fld
) == CONST_DECL
)
14517 else if (VAR_P (fld
))
14519 else if (TREE_CODE (fld
) == TEMPLATE_DECL
)
14521 else if (TREE_CODE (fld
) == USING_DECL
)
14523 else if (TREE_CODE (fld
) == FUNCTION_DECL
)
14527 error ("Wrong tree in TYPE_FIELDS list");
14529 error_found
= true;
14533 else if (TREE_CODE (t
) == INTEGER_TYPE
14534 || TREE_CODE (t
) == BOOLEAN_TYPE
14535 || TREE_CODE (t
) == OFFSET_TYPE
14536 || TREE_CODE (t
) == REFERENCE_TYPE
14537 || TREE_CODE (t
) == NULLPTR_TYPE
14538 || TREE_CODE (t
) == POINTER_TYPE
)
14540 if (TYPE_CACHED_VALUES_P (t
) != (TYPE_CACHED_VALUES (t
) != NULL
))
14542 error ("TYPE_CACHED_VALUES_P is %i while TYPE_CACHED_VALUES is %p",
14543 TYPE_CACHED_VALUES_P (t
), (void *)TYPE_CACHED_VALUES (t
));
14544 error_found
= true;
14546 else if (TYPE_CACHED_VALUES_P (t
) && TREE_CODE (TYPE_CACHED_VALUES (t
)) != TREE_VEC
)
14548 error ("TYPE_CACHED_VALUES is not TREE_VEC");
14549 debug_tree (TYPE_CACHED_VALUES (t
));
14550 error_found
= true;
14552 /* Verify just enough of cache to ensure that no one copied it to new type.
14553 All copying should go by copy_node that should clear it. */
14554 else if (TYPE_CACHED_VALUES_P (t
))
14557 for (i
= 0; i
< TREE_VEC_LENGTH (TYPE_CACHED_VALUES (t
)); i
++)
14558 if (TREE_VEC_ELT (TYPE_CACHED_VALUES (t
), i
)
14559 && TREE_TYPE (TREE_VEC_ELT (TYPE_CACHED_VALUES (t
), i
)) != t
)
14561 error ("wrong TYPE_CACHED_VALUES entry");
14562 debug_tree (TREE_VEC_ELT (TYPE_CACHED_VALUES (t
), i
));
14563 error_found
= true;
14568 else if (TREE_CODE (t
) == FUNCTION_TYPE
|| TREE_CODE (t
) == METHOD_TYPE
)
14569 for (tree l
= TYPE_ARG_TYPES (t
); l
; l
= TREE_CHAIN (l
))
14571 /* C++ FE uses TREE_PURPOSE to store initial values. */
14572 if (TREE_PURPOSE (l
) && in_lto_p
)
14574 error ("TREE_PURPOSE is non-NULL in TYPE_ARG_TYPES list");
14576 error_found
= true;
14578 if (!TYPE_P (TREE_VALUE (l
)))
14580 error ("Wrong entry in TYPE_ARG_TYPES list");
14582 error_found
= true;
14585 else if (!is_lang_specific (t
) && TYPE_VALUES_RAW (t
))
14587 error ("TYPE_VALUES_RAW field is non-NULL");
14588 debug_tree (TYPE_VALUES_RAW (t
));
14589 error_found
= true;
14591 if (TREE_CODE (t
) != INTEGER_TYPE
14592 && TREE_CODE (t
) != BOOLEAN_TYPE
14593 && TREE_CODE (t
) != OFFSET_TYPE
14594 && TREE_CODE (t
) != REFERENCE_TYPE
14595 && TREE_CODE (t
) != NULLPTR_TYPE
14596 && TREE_CODE (t
) != POINTER_TYPE
14597 && TYPE_CACHED_VALUES_P (t
))
14599 error ("TYPE_CACHED_VALUES_P is set while it should not");
14600 error_found
= true;
14602 if (TYPE_STRING_FLAG (t
)
14603 && TREE_CODE (t
) != ARRAY_TYPE
&& TREE_CODE (t
) != INTEGER_TYPE
)
14605 error ("TYPE_STRING_FLAG is set on wrong type code");
14606 error_found
= true;
14609 /* ipa-devirt makes an assumption that TYPE_METHOD_BASETYPE is always
14610 TYPE_MAIN_VARIANT and it would be odd to add methods only to variatns
14612 if (TREE_CODE (t
) == METHOD_TYPE
14613 && TYPE_MAIN_VARIANT (TYPE_METHOD_BASETYPE (t
)) != TYPE_METHOD_BASETYPE (t
))
14615 error ("TYPE_METHOD_BASETYPE is not main variant");
14616 error_found
= true;
14621 debug_tree (const_cast <tree
> (t
));
14622 internal_error ("verify_type failed");
14627 /* Return 1 if ARG interpreted as signed in its precision is known to be
14628 always positive or 2 if ARG is known to be always negative, or 3 if
14629 ARG may be positive or negative. */
14632 get_range_pos_neg (tree arg
)
14634 if (arg
== error_mark_node
)
14637 int prec
= TYPE_PRECISION (TREE_TYPE (arg
));
14639 if (TREE_CODE (arg
) == INTEGER_CST
)
14641 wide_int w
= wi::sext (wi::to_wide (arg
), prec
);
14647 while (CONVERT_EXPR_P (arg
)
14648 && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (arg
, 0)))
14649 && TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (arg
, 0))) <= prec
)
14651 arg
= TREE_OPERAND (arg
, 0);
14652 /* Narrower value zero extended into wider type
14653 will always result in positive values. */
14654 if (TYPE_UNSIGNED (TREE_TYPE (arg
))
14655 && TYPE_PRECISION (TREE_TYPE (arg
)) < prec
)
14657 prec
= TYPE_PRECISION (TREE_TYPE (arg
));
14662 if (TREE_CODE (arg
) != SSA_NAME
)
14664 wide_int arg_min
, arg_max
;
14665 while (get_range_info (arg
, &arg_min
, &arg_max
) != VR_RANGE
)
14667 gimple
*g
= SSA_NAME_DEF_STMT (arg
);
14668 if (is_gimple_assign (g
)
14669 && CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (g
)))
14671 tree t
= gimple_assign_rhs1 (g
);
14672 if (INTEGRAL_TYPE_P (TREE_TYPE (t
))
14673 && TYPE_PRECISION (TREE_TYPE (t
)) <= prec
)
14675 if (TYPE_UNSIGNED (TREE_TYPE (t
))
14676 && TYPE_PRECISION (TREE_TYPE (t
)) < prec
)
14678 prec
= TYPE_PRECISION (TREE_TYPE (t
));
14687 if (TYPE_UNSIGNED (TREE_TYPE (arg
)))
14689 /* For unsigned values, the "positive" range comes
14690 below the "negative" range. */
14691 if (!wi::neg_p (wi::sext (arg_max
, prec
), SIGNED
))
14693 if (wi::neg_p (wi::sext (arg_min
, prec
), SIGNED
))
14698 if (!wi::neg_p (wi::sext (arg_min
, prec
), SIGNED
))
14700 if (wi::neg_p (wi::sext (arg_max
, prec
), SIGNED
))
14709 /* Return true if ARG is marked with the nonnull attribute in the
14710 current function signature. */
14713 nonnull_arg_p (const_tree arg
)
14715 tree t
, attrs
, fntype
;
14716 unsigned HOST_WIDE_INT arg_num
;
14718 gcc_assert (TREE_CODE (arg
) == PARM_DECL
14719 && (POINTER_TYPE_P (TREE_TYPE (arg
))
14720 || TREE_CODE (TREE_TYPE (arg
)) == OFFSET_TYPE
));
14722 /* The static chain decl is always non null. */
14723 if (arg
== cfun
->static_chain_decl
)
14726 /* THIS argument of method is always non-NULL. */
14727 if (TREE_CODE (TREE_TYPE (cfun
->decl
)) == METHOD_TYPE
14728 && arg
== DECL_ARGUMENTS (cfun
->decl
)
14729 && flag_delete_null_pointer_checks
)
14732 /* Values passed by reference are always non-NULL. */
14733 if (TREE_CODE (TREE_TYPE (arg
)) == REFERENCE_TYPE
14734 && flag_delete_null_pointer_checks
)
14737 fntype
= TREE_TYPE (cfun
->decl
);
14738 for (attrs
= TYPE_ATTRIBUTES (fntype
); attrs
; attrs
= TREE_CHAIN (attrs
))
14740 attrs
= lookup_attribute ("nonnull", attrs
);
14742 /* If "nonnull" wasn't specified, we know nothing about the argument. */
14743 if (attrs
== NULL_TREE
)
14746 /* If "nonnull" applies to all the arguments, then ARG is non-null. */
14747 if (TREE_VALUE (attrs
) == NULL_TREE
)
14750 /* Get the position number for ARG in the function signature. */
14751 for (arg_num
= 1, t
= DECL_ARGUMENTS (cfun
->decl
);
14753 t
= DECL_CHAIN (t
), arg_num
++)
14759 gcc_assert (t
== arg
);
14761 /* Now see if ARG_NUM is mentioned in the nonnull list. */
14762 for (t
= TREE_VALUE (attrs
); t
; t
= TREE_CHAIN (t
))
14764 if (compare_tree_int (TREE_VALUE (t
), arg_num
) == 0)
14772 /* Combine LOC and BLOCK to a combined adhoc loc, retaining any range
14776 set_block (location_t loc
, tree block
)
14778 location_t pure_loc
= get_pure_location (loc
);
14779 source_range src_range
= get_range_from_loc (line_table
, loc
);
14780 return COMBINE_LOCATION_DATA (line_table
, pure_loc
, src_range
, block
);
14784 set_source_range (tree expr
, location_t start
, location_t finish
)
14786 source_range src_range
;
14787 src_range
.m_start
= start
;
14788 src_range
.m_finish
= finish
;
14789 return set_source_range (expr
, src_range
);
14793 set_source_range (tree expr
, source_range src_range
)
14795 if (!EXPR_P (expr
))
14796 return UNKNOWN_LOCATION
;
14798 location_t pure_loc
= get_pure_location (EXPR_LOCATION (expr
));
14799 location_t adhoc
= COMBINE_LOCATION_DATA (line_table
,
14803 SET_EXPR_LOCATION (expr
, adhoc
);
14807 /* Return EXPR, potentially wrapped with a node expression LOC,
14808 if !CAN_HAVE_LOCATION_P (expr).
14810 NON_LVALUE_EXPR is used for wrapping constants, apart from STRING_CST.
14811 VIEW_CONVERT_EXPR is used for wrapping non-constants and STRING_CST.
14813 Wrapper nodes can be identified using location_wrapper_p. */
14816 maybe_wrap_with_location (tree expr
, location_t loc
)
14820 if (loc
== UNKNOWN_LOCATION
)
14822 if (CAN_HAVE_LOCATION_P (expr
))
14824 /* We should only be adding wrappers for constants and for decls,
14825 or for some exceptional tree nodes (e.g. BASELINK in the C++ FE). */
14826 gcc_assert (CONSTANT_CLASS_P (expr
)
14828 || EXCEPTIONAL_CLASS_P (expr
));
14830 /* For now, don't add wrappers to exceptional tree nodes, to minimize
14831 any impact of the wrapper nodes. */
14832 if (EXCEPTIONAL_CLASS_P (expr
))
14835 /* If any auto_suppress_location_wrappers are active, don't create
14837 if (suppress_location_wrappers
> 0)
14841 = (((CONSTANT_CLASS_P (expr
) && TREE_CODE (expr
) != STRING_CST
)
14842 || (TREE_CODE (expr
) == CONST_DECL
&& !TREE_STATIC (expr
)))
14843 ? NON_LVALUE_EXPR
: VIEW_CONVERT_EXPR
);
14844 tree wrapper
= build1_loc (loc
, code
, TREE_TYPE (expr
), expr
);
14845 /* Mark this node as being a wrapper. */
14846 EXPR_LOCATION_WRAPPER_P (wrapper
) = 1;
14850 int suppress_location_wrappers
;
14852 /* Return the name of combined function FN, for debugging purposes. */
14855 combined_fn_name (combined_fn fn
)
14857 if (builtin_fn_p (fn
))
14859 tree fndecl
= builtin_decl_explicit (as_builtin_fn (fn
));
14860 return IDENTIFIER_POINTER (DECL_NAME (fndecl
));
14863 return internal_fn_name (as_internal_fn (fn
));
14866 /* Return a bitmap with a bit set corresponding to each argument in
14867 a function call type FNTYPE declared with attribute nonnull,
14868 or null if none of the function's argument are nonnull. The caller
14869 must free the bitmap. */
14872 get_nonnull_args (const_tree fntype
)
14874 if (fntype
== NULL_TREE
)
14877 tree attrs
= TYPE_ATTRIBUTES (fntype
);
14881 bitmap argmap
= NULL
;
14883 /* A function declaration can specify multiple attribute nonnull,
14884 each with zero or more arguments. The loop below creates a bitmap
14885 representing a union of all the arguments. An empty (but non-null)
14886 bitmap means that all arguments have been declaraed nonnull. */
14887 for ( ; attrs
; attrs
= TREE_CHAIN (attrs
))
14889 attrs
= lookup_attribute ("nonnull", attrs
);
14894 argmap
= BITMAP_ALLOC (NULL
);
14896 if (!TREE_VALUE (attrs
))
14898 /* Clear the bitmap in case a previous attribute nonnull
14899 set it and this one overrides it for all arguments. */
14900 bitmap_clear (argmap
);
14904 /* Iterate over the indices of the format arguments declared nonnull
14905 and set a bit for each. */
14906 for (tree idx
= TREE_VALUE (attrs
); idx
; idx
= TREE_CHAIN (idx
))
14908 unsigned int val
= TREE_INT_CST_LOW (TREE_VALUE (idx
)) - 1;
14909 bitmap_set_bit (argmap
, val
);
14916 /* Returns true if TYPE is a type where it and all of its subobjects
14917 (recursively) are of structure, union, or array type. */
14920 default_is_empty_type (tree type
)
14922 if (RECORD_OR_UNION_TYPE_P (type
))
14924 for (tree field
= TYPE_FIELDS (type
); field
; field
= DECL_CHAIN (field
))
14925 if (TREE_CODE (field
) == FIELD_DECL
14926 && !DECL_PADDING_P (field
)
14927 && !default_is_empty_type (TREE_TYPE (field
)))
14931 else if (TREE_CODE (type
) == ARRAY_TYPE
)
14932 return (integer_minus_onep (array_type_nelts (type
))
14933 || TYPE_DOMAIN (type
) == NULL_TREE
14934 || default_is_empty_type (TREE_TYPE (type
)));
14938 /* Implement TARGET_EMPTY_RECORD_P. Return true if TYPE is an empty type
14939 that shouldn't be passed via stack. */
14942 default_is_empty_record (const_tree type
)
14944 if (!abi_version_at_least (12))
14947 if (type
== error_mark_node
)
14950 if (TREE_ADDRESSABLE (type
))
14953 return default_is_empty_type (TYPE_MAIN_VARIANT (type
));
14956 /* Like int_size_in_bytes, but handle empty records specially. */
14959 arg_int_size_in_bytes (const_tree type
)
14961 return TYPE_EMPTY_P (type
) ? 0 : int_size_in_bytes (type
);
14964 /* Like size_in_bytes, but handle empty records specially. */
14967 arg_size_in_bytes (const_tree type
)
14969 return TYPE_EMPTY_P (type
) ? size_zero_node
: size_in_bytes (type
);
14972 /* Return true if an expression with CODE has to have the same result type as
14973 its first operand. */
14976 expr_type_first_operand_type_p (tree_code code
)
14989 case TRUNC_DIV_EXPR
:
14990 case CEIL_DIV_EXPR
:
14991 case FLOOR_DIV_EXPR
:
14992 case ROUND_DIV_EXPR
:
14993 case TRUNC_MOD_EXPR
:
14994 case CEIL_MOD_EXPR
:
14995 case FLOOR_MOD_EXPR
:
14996 case ROUND_MOD_EXPR
:
14998 case EXACT_DIV_EXPR
:
15016 /* Return a typenode for the "standard" C type with a given name. */
15018 get_typenode_from_name (const char *name
)
15020 if (name
== NULL
|| *name
== '\0')
15023 if (strcmp (name
, "char") == 0)
15024 return char_type_node
;
15025 if (strcmp (name
, "unsigned char") == 0)
15026 return unsigned_char_type_node
;
15027 if (strcmp (name
, "signed char") == 0)
15028 return signed_char_type_node
;
15030 if (strcmp (name
, "short int") == 0)
15031 return short_integer_type_node
;
15032 if (strcmp (name
, "short unsigned int") == 0)
15033 return short_unsigned_type_node
;
15035 if (strcmp (name
, "int") == 0)
15036 return integer_type_node
;
15037 if (strcmp (name
, "unsigned int") == 0)
15038 return unsigned_type_node
;
15040 if (strcmp (name
, "long int") == 0)
15041 return long_integer_type_node
;
15042 if (strcmp (name
, "long unsigned int") == 0)
15043 return long_unsigned_type_node
;
15045 if (strcmp (name
, "long long int") == 0)
15046 return long_long_integer_type_node
;
15047 if (strcmp (name
, "long long unsigned int") == 0)
15048 return long_long_unsigned_type_node
;
15050 gcc_unreachable ();
15053 /* List of pointer types used to declare builtins before we have seen their
15056 Keep the size up to date in tree.h ! */
15057 const builtin_structptr_type builtin_structptr_types
[6] =
15059 { fileptr_type_node
, ptr_type_node
, "FILE" },
15060 { const_tm_ptr_type_node
, const_ptr_type_node
, "tm" },
15061 { fenv_t_ptr_type_node
, ptr_type_node
, "fenv_t" },
15062 { const_fenv_t_ptr_type_node
, const_ptr_type_node
, "fenv_t" },
15063 { fexcept_t_ptr_type_node
, ptr_type_node
, "fexcept_t" },
15064 { const_fexcept_t_ptr_type_node
, const_ptr_type_node
, "fexcept_t" }
15067 /* Return the maximum object size. */
15070 max_object_size (void)
15072 /* To do: Make this a configurable parameter. */
15073 return TYPE_MAX_VALUE (ptrdiff_type_node
);
15078 namespace selftest
{
15080 /* Selftests for tree. */
15082 /* Verify that integer constants are sane. */
15085 test_integer_constants ()
15087 ASSERT_TRUE (integer_type_node
!= NULL
);
15088 ASSERT_TRUE (build_int_cst (integer_type_node
, 0) != NULL
);
15090 tree type
= integer_type_node
;
15092 tree zero
= build_zero_cst (type
);
15093 ASSERT_EQ (INTEGER_CST
, TREE_CODE (zero
));
15094 ASSERT_EQ (type
, TREE_TYPE (zero
));
15096 tree one
= build_int_cst (type
, 1);
15097 ASSERT_EQ (INTEGER_CST
, TREE_CODE (one
));
15098 ASSERT_EQ (type
, TREE_TYPE (zero
));
15101 /* Verify identifiers. */
15104 test_identifiers ()
15106 tree identifier
= get_identifier ("foo");
15107 ASSERT_EQ (3, IDENTIFIER_LENGTH (identifier
));
15108 ASSERT_STREQ ("foo", IDENTIFIER_POINTER (identifier
));
15111 /* Verify LABEL_DECL. */
15116 tree identifier
= get_identifier ("err");
15117 tree label_decl
= build_decl (UNKNOWN_LOCATION
, LABEL_DECL
,
15118 identifier
, void_type_node
);
15119 ASSERT_EQ (-1, LABEL_DECL_UID (label_decl
));
15120 ASSERT_FALSE (FORCED_LABEL (label_decl
));
15123 /* Return a new VECTOR_CST node whose type is TYPE and whose values
15124 are given by VALS. */
15127 build_vector (tree type
, vec
<tree
> vals MEM_STAT_DECL
)
15129 gcc_assert (known_eq (vals
.length (), TYPE_VECTOR_SUBPARTS (type
)));
15130 tree_vector_builder
builder (type
, vals
.length (), 1);
15131 builder
.splice (vals
);
15132 return builder
.build ();
15135 /* Check that VECTOR_CST ACTUAL contains the elements in EXPECTED. */
15138 check_vector_cst (vec
<tree
> expected
, tree actual
)
15140 ASSERT_KNOWN_EQ (expected
.length (),
15141 TYPE_VECTOR_SUBPARTS (TREE_TYPE (actual
)));
15142 for (unsigned int i
= 0; i
< expected
.length (); ++i
)
15143 ASSERT_EQ (wi::to_wide (expected
[i
]),
15144 wi::to_wide (vector_cst_elt (actual
, i
)));
15147 /* Check that VECTOR_CST ACTUAL contains NPATTERNS duplicated elements,
15148 and that its elements match EXPECTED. */
15151 check_vector_cst_duplicate (vec
<tree
> expected
, tree actual
,
15152 unsigned int npatterns
)
15154 ASSERT_EQ (npatterns
, VECTOR_CST_NPATTERNS (actual
));
15155 ASSERT_EQ (1, VECTOR_CST_NELTS_PER_PATTERN (actual
));
15156 ASSERT_EQ (npatterns
, vector_cst_encoded_nelts (actual
));
15157 ASSERT_TRUE (VECTOR_CST_DUPLICATE_P (actual
));
15158 ASSERT_FALSE (VECTOR_CST_STEPPED_P (actual
));
15159 check_vector_cst (expected
, actual
);
15162 /* Check that VECTOR_CST ACTUAL contains NPATTERNS foreground elements
15163 and NPATTERNS background elements, and that its elements match
15167 check_vector_cst_fill (vec
<tree
> expected
, tree actual
,
15168 unsigned int npatterns
)
15170 ASSERT_EQ (npatterns
, VECTOR_CST_NPATTERNS (actual
));
15171 ASSERT_EQ (2, VECTOR_CST_NELTS_PER_PATTERN (actual
));
15172 ASSERT_EQ (2 * npatterns
, vector_cst_encoded_nelts (actual
));
15173 ASSERT_FALSE (VECTOR_CST_DUPLICATE_P (actual
));
15174 ASSERT_FALSE (VECTOR_CST_STEPPED_P (actual
));
15175 check_vector_cst (expected
, actual
);
15178 /* Check that VECTOR_CST ACTUAL contains NPATTERNS stepped patterns,
15179 and that its elements match EXPECTED. */
15182 check_vector_cst_stepped (vec
<tree
> expected
, tree actual
,
15183 unsigned int npatterns
)
15185 ASSERT_EQ (npatterns
, VECTOR_CST_NPATTERNS (actual
));
15186 ASSERT_EQ (3, VECTOR_CST_NELTS_PER_PATTERN (actual
));
15187 ASSERT_EQ (3 * npatterns
, vector_cst_encoded_nelts (actual
));
15188 ASSERT_FALSE (VECTOR_CST_DUPLICATE_P (actual
));
15189 ASSERT_TRUE (VECTOR_CST_STEPPED_P (actual
));
15190 check_vector_cst (expected
, actual
);
15193 /* Test the creation of VECTOR_CSTs. */
15196 test_vector_cst_patterns (ALONE_CXX_MEM_STAT_INFO
)
15198 auto_vec
<tree
, 8> elements (8);
15199 elements
.quick_grow (8);
15200 tree element_type
= build_nonstandard_integer_type (16, true);
15201 tree vector_type
= build_vector_type (element_type
, 8);
15203 /* Test a simple linear series with a base of 0 and a step of 1:
15204 { 0, 1, 2, 3, 4, 5, 6, 7 }. */
15205 for (unsigned int i
= 0; i
< 8; ++i
)
15206 elements
[i
] = build_int_cst (element_type
, i
);
15207 tree vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15208 check_vector_cst_stepped (elements
, vector
, 1);
15210 /* Try the same with the first element replaced by 100:
15211 { 100, 1, 2, 3, 4, 5, 6, 7 }. */
15212 elements
[0] = build_int_cst (element_type
, 100);
15213 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15214 check_vector_cst_stepped (elements
, vector
, 1);
15216 /* Try a series that wraps around.
15217 { 100, 65531, 65532, 65533, 65534, 65535, 0, 1 }. */
15218 for (unsigned int i
= 1; i
< 8; ++i
)
15219 elements
[i
] = build_int_cst (element_type
, (65530 + i
) & 0xffff);
15220 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15221 check_vector_cst_stepped (elements
, vector
, 1);
15223 /* Try a downward series:
15224 { 100, 79, 78, 77, 76, 75, 75, 73 }. */
15225 for (unsigned int i
= 1; i
< 8; ++i
)
15226 elements
[i
] = build_int_cst (element_type
, 80 - i
);
15227 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15228 check_vector_cst_stepped (elements
, vector
, 1);
15230 /* Try two interleaved series with different bases and steps:
15231 { 100, 53, 66, 206, 62, 212, 58, 218 }. */
15232 elements
[1] = build_int_cst (element_type
, 53);
15233 for (unsigned int i
= 2; i
< 8; i
+= 2)
15235 elements
[i
] = build_int_cst (element_type
, 70 - i
* 2);
15236 elements
[i
+ 1] = build_int_cst (element_type
, 200 + i
* 3);
15238 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15239 check_vector_cst_stepped (elements
, vector
, 2);
15241 /* Try a duplicated value:
15242 { 100, 100, 100, 100, 100, 100, 100, 100 }. */
15243 for (unsigned int i
= 1; i
< 8; ++i
)
15244 elements
[i
] = elements
[0];
15245 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15246 check_vector_cst_duplicate (elements
, vector
, 1);
15248 /* Try an interleaved duplicated value:
15249 { 100, 55, 100, 55, 100, 55, 100, 55 }. */
15250 elements
[1] = build_int_cst (element_type
, 55);
15251 for (unsigned int i
= 2; i
< 8; ++i
)
15252 elements
[i
] = elements
[i
- 2];
15253 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15254 check_vector_cst_duplicate (elements
, vector
, 2);
15256 /* Try a duplicated value with 2 exceptions
15257 { 41, 97, 100, 55, 100, 55, 100, 55 }. */
15258 elements
[0] = build_int_cst (element_type
, 41);
15259 elements
[1] = build_int_cst (element_type
, 97);
15260 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15261 check_vector_cst_fill (elements
, vector
, 2);
15263 /* Try with and without a step
15264 { 41, 97, 100, 21, 100, 35, 100, 49 }. */
15265 for (unsigned int i
= 3; i
< 8; i
+= 2)
15266 elements
[i
] = build_int_cst (element_type
, i
* 7);
15267 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15268 check_vector_cst_stepped (elements
, vector
, 2);
15270 /* Try a fully-general constant:
15271 { 41, 97, 100, 21, 100, 9990, 100, 49 }. */
15272 elements
[5] = build_int_cst (element_type
, 9990);
15273 vector
= build_vector (vector_type
, elements PASS_MEM_STAT
);
15274 check_vector_cst_fill (elements
, vector
, 4);
15277 /* Verify that STRIP_NOPS (NODE) is EXPECTED.
15278 Helper function for test_location_wrappers, to deal with STRIP_NOPS
15279 modifying its argument in-place. */
15282 check_strip_nops (tree node
, tree expected
)
15285 ASSERT_EQ (expected
, node
);
15288 /* Verify location wrappers. */
15291 test_location_wrappers ()
15293 location_t loc
= BUILTINS_LOCATION
;
15295 ASSERT_EQ (NULL_TREE
, maybe_wrap_with_location (NULL_TREE
, loc
));
15297 /* Wrapping a constant. */
15298 tree int_cst
= build_int_cst (integer_type_node
, 42);
15299 ASSERT_FALSE (CAN_HAVE_LOCATION_P (int_cst
));
15300 ASSERT_FALSE (location_wrapper_p (int_cst
));
15302 tree wrapped_int_cst
= maybe_wrap_with_location (int_cst
, loc
);
15303 ASSERT_TRUE (location_wrapper_p (wrapped_int_cst
));
15304 ASSERT_EQ (loc
, EXPR_LOCATION (wrapped_int_cst
));
15305 ASSERT_EQ (int_cst
, tree_strip_any_location_wrapper (wrapped_int_cst
));
15307 /* We shouldn't add wrapper nodes for UNKNOWN_LOCATION. */
15308 ASSERT_EQ (int_cst
, maybe_wrap_with_location (int_cst
, UNKNOWN_LOCATION
));
15310 /* We shouldn't add wrapper nodes for nodes that CAN_HAVE_LOCATION_P. */
15311 tree cast
= build1 (NOP_EXPR
, char_type_node
, int_cst
);
15312 ASSERT_TRUE (CAN_HAVE_LOCATION_P (cast
));
15313 ASSERT_EQ (cast
, maybe_wrap_with_location (cast
, loc
));
15315 /* Wrapping a STRING_CST. */
15316 tree string_cst
= build_string (4, "foo");
15317 ASSERT_FALSE (CAN_HAVE_LOCATION_P (string_cst
));
15318 ASSERT_FALSE (location_wrapper_p (string_cst
));
15320 tree wrapped_string_cst
= maybe_wrap_with_location (string_cst
, loc
);
15321 ASSERT_TRUE (location_wrapper_p (wrapped_string_cst
));
15322 ASSERT_EQ (VIEW_CONVERT_EXPR
, TREE_CODE (wrapped_string_cst
));
15323 ASSERT_EQ (loc
, EXPR_LOCATION (wrapped_string_cst
));
15324 ASSERT_EQ (string_cst
, tree_strip_any_location_wrapper (wrapped_string_cst
));
15327 /* Wrapping a variable. */
15328 tree int_var
= build_decl (UNKNOWN_LOCATION
, VAR_DECL
,
15329 get_identifier ("some_int_var"),
15330 integer_type_node
);
15331 ASSERT_FALSE (CAN_HAVE_LOCATION_P (int_var
));
15332 ASSERT_FALSE (location_wrapper_p (int_var
));
15334 tree wrapped_int_var
= maybe_wrap_with_location (int_var
, loc
);
15335 ASSERT_TRUE (location_wrapper_p (wrapped_int_var
));
15336 ASSERT_EQ (loc
, EXPR_LOCATION (wrapped_int_var
));
15337 ASSERT_EQ (int_var
, tree_strip_any_location_wrapper (wrapped_int_var
));
15339 /* Verify that "reinterpret_cast<int>(some_int_var)" is not a location
15341 tree r_cast
= build1 (NON_LVALUE_EXPR
, integer_type_node
, int_var
);
15342 ASSERT_FALSE (location_wrapper_p (r_cast
));
15343 ASSERT_EQ (r_cast
, tree_strip_any_location_wrapper (r_cast
));
15345 /* Verify that STRIP_NOPS removes wrappers. */
15346 check_strip_nops (wrapped_int_cst
, int_cst
);
15347 check_strip_nops (wrapped_string_cst
, string_cst
);
15348 check_strip_nops (wrapped_int_var
, int_var
);
15351 /* Test various tree predicates. Verify that location wrappers don't
15352 affect the results. */
15357 /* Build various constants and wrappers around them. */
15359 location_t loc
= BUILTINS_LOCATION
;
15361 tree i_0
= build_int_cst (integer_type_node
, 0);
15362 tree wr_i_0
= maybe_wrap_with_location (i_0
, loc
);
15364 tree i_1
= build_int_cst (integer_type_node
, 1);
15365 tree wr_i_1
= maybe_wrap_with_location (i_1
, loc
);
15367 tree i_m1
= build_int_cst (integer_type_node
, -1);
15368 tree wr_i_m1
= maybe_wrap_with_location (i_m1
, loc
);
15370 tree f_0
= build_real_from_int_cst (float_type_node
, i_0
);
15371 tree wr_f_0
= maybe_wrap_with_location (f_0
, loc
);
15372 tree f_1
= build_real_from_int_cst (float_type_node
, i_1
);
15373 tree wr_f_1
= maybe_wrap_with_location (f_1
, loc
);
15374 tree f_m1
= build_real_from_int_cst (float_type_node
, i_m1
);
15375 tree wr_f_m1
= maybe_wrap_with_location (f_m1
, loc
);
15377 tree c_i_0
= build_complex (NULL_TREE
, i_0
, i_0
);
15378 tree c_i_1
= build_complex (NULL_TREE
, i_1
, i_0
);
15379 tree c_i_m1
= build_complex (NULL_TREE
, i_m1
, i_0
);
15381 tree c_f_0
= build_complex (NULL_TREE
, f_0
, f_0
);
15382 tree c_f_1
= build_complex (NULL_TREE
, f_1
, f_0
);
15383 tree c_f_m1
= build_complex (NULL_TREE
, f_m1
, f_0
);
15385 /* TODO: vector constants. */
15387 /* Test integer_onep. */
15388 ASSERT_FALSE (integer_onep (i_0
));
15389 ASSERT_FALSE (integer_onep (wr_i_0
));
15390 ASSERT_TRUE (integer_onep (i_1
));
15391 ASSERT_TRUE (integer_onep (wr_i_1
));
15392 ASSERT_FALSE (integer_onep (i_m1
));
15393 ASSERT_FALSE (integer_onep (wr_i_m1
));
15394 ASSERT_FALSE (integer_onep (f_0
));
15395 ASSERT_FALSE (integer_onep (wr_f_0
));
15396 ASSERT_FALSE (integer_onep (f_1
));
15397 ASSERT_FALSE (integer_onep (wr_f_1
));
15398 ASSERT_FALSE (integer_onep (f_m1
));
15399 ASSERT_FALSE (integer_onep (wr_f_m1
));
15400 ASSERT_FALSE (integer_onep (c_i_0
));
15401 ASSERT_TRUE (integer_onep (c_i_1
));
15402 ASSERT_FALSE (integer_onep (c_i_m1
));
15403 ASSERT_FALSE (integer_onep (c_f_0
));
15404 ASSERT_FALSE (integer_onep (c_f_1
));
15405 ASSERT_FALSE (integer_onep (c_f_m1
));
15407 /* Test integer_zerop. */
15408 ASSERT_TRUE (integer_zerop (i_0
));
15409 ASSERT_TRUE (integer_zerop (wr_i_0
));
15410 ASSERT_FALSE (integer_zerop (i_1
));
15411 ASSERT_FALSE (integer_zerop (wr_i_1
));
15412 ASSERT_FALSE (integer_zerop (i_m1
));
15413 ASSERT_FALSE (integer_zerop (wr_i_m1
));
15414 ASSERT_FALSE (integer_zerop (f_0
));
15415 ASSERT_FALSE (integer_zerop (wr_f_0
));
15416 ASSERT_FALSE (integer_zerop (f_1
));
15417 ASSERT_FALSE (integer_zerop (wr_f_1
));
15418 ASSERT_FALSE (integer_zerop (f_m1
));
15419 ASSERT_FALSE (integer_zerop (wr_f_m1
));
15420 ASSERT_TRUE (integer_zerop (c_i_0
));
15421 ASSERT_FALSE (integer_zerop (c_i_1
));
15422 ASSERT_FALSE (integer_zerop (c_i_m1
));
15423 ASSERT_FALSE (integer_zerop (c_f_0
));
15424 ASSERT_FALSE (integer_zerop (c_f_1
));
15425 ASSERT_FALSE (integer_zerop (c_f_m1
));
15427 /* Test integer_all_onesp. */
15428 ASSERT_FALSE (integer_all_onesp (i_0
));
15429 ASSERT_FALSE (integer_all_onesp (wr_i_0
));
15430 ASSERT_FALSE (integer_all_onesp (i_1
));
15431 ASSERT_FALSE (integer_all_onesp (wr_i_1
));
15432 ASSERT_TRUE (integer_all_onesp (i_m1
));
15433 ASSERT_TRUE (integer_all_onesp (wr_i_m1
));
15434 ASSERT_FALSE (integer_all_onesp (f_0
));
15435 ASSERT_FALSE (integer_all_onesp (wr_f_0
));
15436 ASSERT_FALSE (integer_all_onesp (f_1
));
15437 ASSERT_FALSE (integer_all_onesp (wr_f_1
));
15438 ASSERT_FALSE (integer_all_onesp (f_m1
));
15439 ASSERT_FALSE (integer_all_onesp (wr_f_m1
));
15440 ASSERT_FALSE (integer_all_onesp (c_i_0
));
15441 ASSERT_FALSE (integer_all_onesp (c_i_1
));
15442 ASSERT_FALSE (integer_all_onesp (c_i_m1
));
15443 ASSERT_FALSE (integer_all_onesp (c_f_0
));
15444 ASSERT_FALSE (integer_all_onesp (c_f_1
));
15445 ASSERT_FALSE (integer_all_onesp (c_f_m1
));
15447 /* Test integer_minus_onep. */
15448 ASSERT_FALSE (integer_minus_onep (i_0
));
15449 ASSERT_FALSE (integer_minus_onep (wr_i_0
));
15450 ASSERT_FALSE (integer_minus_onep (i_1
));
15451 ASSERT_FALSE (integer_minus_onep (wr_i_1
));
15452 ASSERT_TRUE (integer_minus_onep (i_m1
));
15453 ASSERT_TRUE (integer_minus_onep (wr_i_m1
));
15454 ASSERT_FALSE (integer_minus_onep (f_0
));
15455 ASSERT_FALSE (integer_minus_onep (wr_f_0
));
15456 ASSERT_FALSE (integer_minus_onep (f_1
));
15457 ASSERT_FALSE (integer_minus_onep (wr_f_1
));
15458 ASSERT_FALSE (integer_minus_onep (f_m1
));
15459 ASSERT_FALSE (integer_minus_onep (wr_f_m1
));
15460 ASSERT_FALSE (integer_minus_onep (c_i_0
));
15461 ASSERT_FALSE (integer_minus_onep (c_i_1
));
15462 ASSERT_TRUE (integer_minus_onep (c_i_m1
));
15463 ASSERT_FALSE (integer_minus_onep (c_f_0
));
15464 ASSERT_FALSE (integer_minus_onep (c_f_1
));
15465 ASSERT_FALSE (integer_minus_onep (c_f_m1
));
15467 /* Test integer_each_onep. */
15468 ASSERT_FALSE (integer_each_onep (i_0
));
15469 ASSERT_FALSE (integer_each_onep (wr_i_0
));
15470 ASSERT_TRUE (integer_each_onep (i_1
));
15471 ASSERT_TRUE (integer_each_onep (wr_i_1
));
15472 ASSERT_FALSE (integer_each_onep (i_m1
));
15473 ASSERT_FALSE (integer_each_onep (wr_i_m1
));
15474 ASSERT_FALSE (integer_each_onep (f_0
));
15475 ASSERT_FALSE (integer_each_onep (wr_f_0
));
15476 ASSERT_FALSE (integer_each_onep (f_1
));
15477 ASSERT_FALSE (integer_each_onep (wr_f_1
));
15478 ASSERT_FALSE (integer_each_onep (f_m1
));
15479 ASSERT_FALSE (integer_each_onep (wr_f_m1
));
15480 ASSERT_FALSE (integer_each_onep (c_i_0
));
15481 ASSERT_FALSE (integer_each_onep (c_i_1
));
15482 ASSERT_FALSE (integer_each_onep (c_i_m1
));
15483 ASSERT_FALSE (integer_each_onep (c_f_0
));
15484 ASSERT_FALSE (integer_each_onep (c_f_1
));
15485 ASSERT_FALSE (integer_each_onep (c_f_m1
));
15487 /* Test integer_truep. */
15488 ASSERT_FALSE (integer_truep (i_0
));
15489 ASSERT_FALSE (integer_truep (wr_i_0
));
15490 ASSERT_TRUE (integer_truep (i_1
));
15491 ASSERT_TRUE (integer_truep (wr_i_1
));
15492 ASSERT_FALSE (integer_truep (i_m1
));
15493 ASSERT_FALSE (integer_truep (wr_i_m1
));
15494 ASSERT_FALSE (integer_truep (f_0
));
15495 ASSERT_FALSE (integer_truep (wr_f_0
));
15496 ASSERT_FALSE (integer_truep (f_1
));
15497 ASSERT_FALSE (integer_truep (wr_f_1
));
15498 ASSERT_FALSE (integer_truep (f_m1
));
15499 ASSERT_FALSE (integer_truep (wr_f_m1
));
15500 ASSERT_FALSE (integer_truep (c_i_0
));
15501 ASSERT_TRUE (integer_truep (c_i_1
));
15502 ASSERT_FALSE (integer_truep (c_i_m1
));
15503 ASSERT_FALSE (integer_truep (c_f_0
));
15504 ASSERT_FALSE (integer_truep (c_f_1
));
15505 ASSERT_FALSE (integer_truep (c_f_m1
));
15507 /* Test integer_nonzerop. */
15508 ASSERT_FALSE (integer_nonzerop (i_0
));
15509 ASSERT_FALSE (integer_nonzerop (wr_i_0
));
15510 ASSERT_TRUE (integer_nonzerop (i_1
));
15511 ASSERT_TRUE (integer_nonzerop (wr_i_1
));
15512 ASSERT_TRUE (integer_nonzerop (i_m1
));
15513 ASSERT_TRUE (integer_nonzerop (wr_i_m1
));
15514 ASSERT_FALSE (integer_nonzerop (f_0
));
15515 ASSERT_FALSE (integer_nonzerop (wr_f_0
));
15516 ASSERT_FALSE (integer_nonzerop (f_1
));
15517 ASSERT_FALSE (integer_nonzerop (wr_f_1
));
15518 ASSERT_FALSE (integer_nonzerop (f_m1
));
15519 ASSERT_FALSE (integer_nonzerop (wr_f_m1
));
15520 ASSERT_FALSE (integer_nonzerop (c_i_0
));
15521 ASSERT_TRUE (integer_nonzerop (c_i_1
));
15522 ASSERT_TRUE (integer_nonzerop (c_i_m1
));
15523 ASSERT_FALSE (integer_nonzerop (c_f_0
));
15524 ASSERT_FALSE (integer_nonzerop (c_f_1
));
15525 ASSERT_FALSE (integer_nonzerop (c_f_m1
));
15527 /* Test real_zerop. */
15528 ASSERT_FALSE (real_zerop (i_0
));
15529 ASSERT_FALSE (real_zerop (wr_i_0
));
15530 ASSERT_FALSE (real_zerop (i_1
));
15531 ASSERT_FALSE (real_zerop (wr_i_1
));
15532 ASSERT_FALSE (real_zerop (i_m1
));
15533 ASSERT_FALSE (real_zerop (wr_i_m1
));
15534 ASSERT_TRUE (real_zerop (f_0
));
15535 ASSERT_TRUE (real_zerop (wr_f_0
));
15536 ASSERT_FALSE (real_zerop (f_1
));
15537 ASSERT_FALSE (real_zerop (wr_f_1
));
15538 ASSERT_FALSE (real_zerop (f_m1
));
15539 ASSERT_FALSE (real_zerop (wr_f_m1
));
15540 ASSERT_FALSE (real_zerop (c_i_0
));
15541 ASSERT_FALSE (real_zerop (c_i_1
));
15542 ASSERT_FALSE (real_zerop (c_i_m1
));
15543 ASSERT_TRUE (real_zerop (c_f_0
));
15544 ASSERT_FALSE (real_zerop (c_f_1
));
15545 ASSERT_FALSE (real_zerop (c_f_m1
));
15547 /* Test real_onep. */
15548 ASSERT_FALSE (real_onep (i_0
));
15549 ASSERT_FALSE (real_onep (wr_i_0
));
15550 ASSERT_FALSE (real_onep (i_1
));
15551 ASSERT_FALSE (real_onep (wr_i_1
));
15552 ASSERT_FALSE (real_onep (i_m1
));
15553 ASSERT_FALSE (real_onep (wr_i_m1
));
15554 ASSERT_FALSE (real_onep (f_0
));
15555 ASSERT_FALSE (real_onep (wr_f_0
));
15556 ASSERT_TRUE (real_onep (f_1
));
15557 ASSERT_TRUE (real_onep (wr_f_1
));
15558 ASSERT_FALSE (real_onep (f_m1
));
15559 ASSERT_FALSE (real_onep (wr_f_m1
));
15560 ASSERT_FALSE (real_onep (c_i_0
));
15561 ASSERT_FALSE (real_onep (c_i_1
));
15562 ASSERT_FALSE (real_onep (c_i_m1
));
15563 ASSERT_FALSE (real_onep (c_f_0
));
15564 ASSERT_TRUE (real_onep (c_f_1
));
15565 ASSERT_FALSE (real_onep (c_f_m1
));
15567 /* Test real_minus_onep. */
15568 ASSERT_FALSE (real_minus_onep (i_0
));
15569 ASSERT_FALSE (real_minus_onep (wr_i_0
));
15570 ASSERT_FALSE (real_minus_onep (i_1
));
15571 ASSERT_FALSE (real_minus_onep (wr_i_1
));
15572 ASSERT_FALSE (real_minus_onep (i_m1
));
15573 ASSERT_FALSE (real_minus_onep (wr_i_m1
));
15574 ASSERT_FALSE (real_minus_onep (f_0
));
15575 ASSERT_FALSE (real_minus_onep (wr_f_0
));
15576 ASSERT_FALSE (real_minus_onep (f_1
));
15577 ASSERT_FALSE (real_minus_onep (wr_f_1
));
15578 ASSERT_TRUE (real_minus_onep (f_m1
));
15579 ASSERT_TRUE (real_minus_onep (wr_f_m1
));
15580 ASSERT_FALSE (real_minus_onep (c_i_0
));
15581 ASSERT_FALSE (real_minus_onep (c_i_1
));
15582 ASSERT_FALSE (real_minus_onep (c_i_m1
));
15583 ASSERT_FALSE (real_minus_onep (c_f_0
));
15584 ASSERT_FALSE (real_minus_onep (c_f_1
));
15585 ASSERT_TRUE (real_minus_onep (c_f_m1
));
15588 ASSERT_TRUE (zerop (i_0
));
15589 ASSERT_TRUE (zerop (wr_i_0
));
15590 ASSERT_FALSE (zerop (i_1
));
15591 ASSERT_FALSE (zerop (wr_i_1
));
15592 ASSERT_FALSE (zerop (i_m1
));
15593 ASSERT_FALSE (zerop (wr_i_m1
));
15594 ASSERT_TRUE (zerop (f_0
));
15595 ASSERT_TRUE (zerop (wr_f_0
));
15596 ASSERT_FALSE (zerop (f_1
));
15597 ASSERT_FALSE (zerop (wr_f_1
));
15598 ASSERT_FALSE (zerop (f_m1
));
15599 ASSERT_FALSE (zerop (wr_f_m1
));
15600 ASSERT_TRUE (zerop (c_i_0
));
15601 ASSERT_FALSE (zerop (c_i_1
));
15602 ASSERT_FALSE (zerop (c_i_m1
));
15603 ASSERT_TRUE (zerop (c_f_0
));
15604 ASSERT_FALSE (zerop (c_f_1
));
15605 ASSERT_FALSE (zerop (c_f_m1
));
15607 /* Test tree_expr_nonnegative_p. */
15608 ASSERT_TRUE (tree_expr_nonnegative_p (i_0
));
15609 ASSERT_TRUE (tree_expr_nonnegative_p (wr_i_0
));
15610 ASSERT_TRUE (tree_expr_nonnegative_p (i_1
));
15611 ASSERT_TRUE (tree_expr_nonnegative_p (wr_i_1
));
15612 ASSERT_FALSE (tree_expr_nonnegative_p (i_m1
));
15613 ASSERT_FALSE (tree_expr_nonnegative_p (wr_i_m1
));
15614 ASSERT_TRUE (tree_expr_nonnegative_p (f_0
));
15615 ASSERT_TRUE (tree_expr_nonnegative_p (wr_f_0
));
15616 ASSERT_TRUE (tree_expr_nonnegative_p (f_1
));
15617 ASSERT_TRUE (tree_expr_nonnegative_p (wr_f_1
));
15618 ASSERT_FALSE (tree_expr_nonnegative_p (f_m1
));
15619 ASSERT_FALSE (tree_expr_nonnegative_p (wr_f_m1
));
15620 ASSERT_FALSE (tree_expr_nonnegative_p (c_i_0
));
15621 ASSERT_FALSE (tree_expr_nonnegative_p (c_i_1
));
15622 ASSERT_FALSE (tree_expr_nonnegative_p (c_i_m1
));
15623 ASSERT_FALSE (tree_expr_nonnegative_p (c_f_0
));
15624 ASSERT_FALSE (tree_expr_nonnegative_p (c_f_1
));
15625 ASSERT_FALSE (tree_expr_nonnegative_p (c_f_m1
));
15627 /* Test tree_expr_nonzero_p. */
15628 ASSERT_FALSE (tree_expr_nonzero_p (i_0
));
15629 ASSERT_FALSE (tree_expr_nonzero_p (wr_i_0
));
15630 ASSERT_TRUE (tree_expr_nonzero_p (i_1
));
15631 ASSERT_TRUE (tree_expr_nonzero_p (wr_i_1
));
15632 ASSERT_TRUE (tree_expr_nonzero_p (i_m1
));
15633 ASSERT_TRUE (tree_expr_nonzero_p (wr_i_m1
));
15635 /* Test integer_valued_real_p. */
15636 ASSERT_FALSE (integer_valued_real_p (i_0
));
15637 ASSERT_TRUE (integer_valued_real_p (f_0
));
15638 ASSERT_TRUE (integer_valued_real_p (wr_f_0
));
15639 ASSERT_TRUE (integer_valued_real_p (f_1
));
15640 ASSERT_TRUE (integer_valued_real_p (wr_f_1
));
15642 /* Test integer_pow2p. */
15643 ASSERT_FALSE (integer_pow2p (i_0
));
15644 ASSERT_TRUE (integer_pow2p (i_1
));
15645 ASSERT_TRUE (integer_pow2p (wr_i_1
));
15647 /* Test uniform_integer_cst_p. */
15648 ASSERT_TRUE (uniform_integer_cst_p (i_0
));
15649 ASSERT_TRUE (uniform_integer_cst_p (wr_i_0
));
15650 ASSERT_TRUE (uniform_integer_cst_p (i_1
));
15651 ASSERT_TRUE (uniform_integer_cst_p (wr_i_1
));
15652 ASSERT_TRUE (uniform_integer_cst_p (i_m1
));
15653 ASSERT_TRUE (uniform_integer_cst_p (wr_i_m1
));
15654 ASSERT_FALSE (uniform_integer_cst_p (f_0
));
15655 ASSERT_FALSE (uniform_integer_cst_p (wr_f_0
));
15656 ASSERT_FALSE (uniform_integer_cst_p (f_1
));
15657 ASSERT_FALSE (uniform_integer_cst_p (wr_f_1
));
15658 ASSERT_FALSE (uniform_integer_cst_p (f_m1
));
15659 ASSERT_FALSE (uniform_integer_cst_p (wr_f_m1
));
15660 ASSERT_FALSE (uniform_integer_cst_p (c_i_0
));
15661 ASSERT_FALSE (uniform_integer_cst_p (c_i_1
));
15662 ASSERT_FALSE (uniform_integer_cst_p (c_i_m1
));
15663 ASSERT_FALSE (uniform_integer_cst_p (c_f_0
));
15664 ASSERT_FALSE (uniform_integer_cst_p (c_f_1
));
15665 ASSERT_FALSE (uniform_integer_cst_p (c_f_m1
));
15668 /* Check that string escaping works correctly. */
15671 test_escaped_strings (void)
15674 escaped_string msg
;
15677 /* ASSERT_STREQ does not accept NULL as a valid test
15678 result, so we have to use ASSERT_EQ instead. */
15679 ASSERT_EQ (NULL
, (const char *) msg
);
15682 ASSERT_STREQ ("", (const char *) msg
);
15684 msg
.escape ("foobar");
15685 ASSERT_STREQ ("foobar", (const char *) msg
);
15687 /* Ensure that we have -fmessage-length set to 0. */
15688 saved_cutoff
= pp_line_cutoff (global_dc
->printer
);
15689 pp_line_cutoff (global_dc
->printer
) = 0;
15691 msg
.escape ("foo\nbar");
15692 ASSERT_STREQ ("foo\\nbar", (const char *) msg
);
15694 msg
.escape ("\a\b\f\n\r\t\v");
15695 ASSERT_STREQ ("\\a\\b\\f\\n\\r\\t\\v", (const char *) msg
);
15697 /* Now repeat the tests with -fmessage-length set to 5. */
15698 pp_line_cutoff (global_dc
->printer
) = 5;
15700 /* Note that the newline is not translated into an escape. */
15701 msg
.escape ("foo\nbar");
15702 ASSERT_STREQ ("foo\nbar", (const char *) msg
);
15704 msg
.escape ("\a\b\f\n\r\t\v");
15705 ASSERT_STREQ ("\\a\\b\\f\n\\r\\t\\v", (const char *) msg
);
15707 /* Restore the original message length setting. */
15708 pp_line_cutoff (global_dc
->printer
) = saved_cutoff
;
15711 /* Run all of the selftests within this file. */
15716 test_integer_constants ();
15717 test_identifiers ();
15719 test_vector_cst_patterns ();
15720 test_location_wrappers ();
15721 test_predicates ();
15722 test_escaped_strings ();
15725 } // namespace selftest
15727 #endif /* CHECKING_P */
15729 #include "gt-tree.h"