1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2017 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 #ifndef GCC_TREE_CORE_H
21 #define GCC_TREE_CORE_H
25 /* This file contains all the data structures that define the 'tree' type.
26 There are no accessor macros nor functions in this file. Only the
27 basic data structures, extern declarations and type definitions. */
29 /*---------------------------------------------------------------------------
30 Forward type declarations. Mostly to avoid including unnecessary headers
31 ---------------------------------------------------------------------------*/
36 struct range_info_def
;
40 /*---------------------------------------------------------------------------
42 ---------------------------------------------------------------------------*/
43 /* Nonzero if this is a call to a function whose return value depends
44 solely on its arguments, has no side effects, and does not read
45 global memory. This corresponds to TREE_READONLY for function
47 #define ECF_CONST (1 << 0)
49 /* Nonzero if this is a call to "pure" function (like const function,
50 but may read memory. This corresponds to DECL_PURE_P for function
52 #define ECF_PURE (1 << 1)
54 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no
55 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P
57 #define ECF_LOOPING_CONST_OR_PURE (1 << 2)
59 /* Nonzero if this call will never return. */
60 #define ECF_NORETURN (1 << 3)
62 /* Nonzero if this is a call to malloc or a related function. */
63 #define ECF_MALLOC (1 << 4)
65 /* Nonzero if it is plausible that this is a call to alloca. */
66 #define ECF_MAY_BE_ALLOCA (1 << 5)
68 /* Nonzero if this is a call to a function that won't throw an exception. */
69 #define ECF_NOTHROW (1 << 6)
71 /* Nonzero if this is a call to setjmp or a related function. */
72 #define ECF_RETURNS_TWICE (1 << 7)
74 /* Nonzero if this call replaces the current stack frame. */
75 #define ECF_SIBCALL (1 << 8)
77 /* Function does not read or write memory (but may have side effects, so
78 it does not necessarily fit ECF_CONST). */
79 #define ECF_NOVOPS (1 << 9)
81 /* The function does not lead to calls within current function unit. */
82 #define ECF_LEAF (1 << 10)
84 /* Nonzero if this call returns its first argument. */
85 #define ECF_RET1 (1 << 11)
87 /* Nonzero if this call does not affect transactions. */
88 #define ECF_TM_PURE (1 << 12)
90 /* Nonzero if this call is into the transaction runtime library. */
91 #define ECF_TM_BUILTIN (1 << 13)
93 /* Nonzero if this is an indirect call by descriptor. */
94 #define ECF_BY_DESCRIPTOR (1 << 14)
96 /* Nonzero if this is a cold function. */
97 #define ECF_COLD (1 << 15)
99 /* Call argument flags. */
100 /* Nonzero if the argument is not dereferenced recursively, thus only
101 directly reachable memory is read or written. */
102 #define EAF_DIRECT (1 << 0)
104 /* Nonzero if memory reached by the argument is not clobbered. */
105 #define EAF_NOCLOBBER (1 << 1)
107 /* Nonzero if the argument does not escape. */
108 #define EAF_NOESCAPE (1 << 2)
110 /* Nonzero if the argument is not used by the function. */
111 #define EAF_UNUSED (1 << 3)
113 /* Call return flags. */
114 /* Mask for the argument number that is returned. Lower two bits of
115 the return flags, encodes argument slots zero to three. */
116 #define ERF_RETURN_ARG_MASK (3)
118 /* Nonzero if the return value is equal to the argument number
119 flags & ERF_RETURN_ARG_MASK. */
120 #define ERF_RETURNS_ARG (1 << 2)
122 /* Nonzero if the return value does not alias with anything. Functions
123 with the malloc attribute have this set on their return value. */
124 #define ERF_NOALIAS (1 << 3)
127 /*---------------------------------------------------------------------------
129 ---------------------------------------------------------------------------*/
130 /* Codes of tree nodes. */
131 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
132 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
135 #include "all-tree.def"
140 #undef END_OF_BASE_TREE_CODES
142 /* Number of language-independent tree codes. */
143 #define NUM_TREE_CODES \
144 ((int) LAST_AND_UNUSED_TREE_CODE)
146 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
147 (tree_contains_struct[(CODE)][(STRUCT)])
150 /* Classify which part of the compiler has defined a given builtin function.
151 Note that we assume below that this is no more than two bits. */
152 enum built_in_class
{
159 /* Last marker used for LTO stremaing of built_in_class. We can not add it
160 to the enum since we need the enumb to fit in 2 bits. */
161 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
163 /* Codes that identify the various built in functions
164 so that expand_call can identify them quickly. */
165 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
166 enum built_in_function
{
167 #include "builtins.def"
171 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
172 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
173 ENUM##_CHKP = ENUM + BEGIN_CHKP_BUILTINS + 1,
174 #include "builtins.def"
176 END_CHKP_BUILTINS
= BEGIN_CHKP_BUILTINS
* 2 + 1,
178 /* Complex division routines in libgcc. These are done via builtins
179 because emit_library_call_value can't handle complex values. */
180 BUILT_IN_COMPLEX_MUL_MIN
,
181 BUILT_IN_COMPLEX_MUL_MAX
182 = BUILT_IN_COMPLEX_MUL_MIN
183 + MAX_MODE_COMPLEX_FLOAT
184 - MIN_MODE_COMPLEX_FLOAT
,
186 BUILT_IN_COMPLEX_DIV_MIN
,
187 BUILT_IN_COMPLEX_DIV_MAX
188 = BUILT_IN_COMPLEX_DIV_MIN
189 + MAX_MODE_COMPLEX_FLOAT
190 - MIN_MODE_COMPLEX_FLOAT
,
192 /* Upper bound on non-language-specific builtins. */
196 /* Internal functions. */
198 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
199 #include "internal-fn.def"
203 /* An enum that combines target-independent built-in functions with
204 internal functions, so that they can be treated in a similar way.
205 The numbers for built-in functions are the same as for the
206 built_in_function enum. The numbers for internal functions
207 start at END_BUITLINS. */
209 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
210 CFN_##ENUM = int (ENUM),
211 #include "builtins.def"
213 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
214 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
215 CFN_##ENUM##_CHKP = int (ENUM##_CHKP),
216 #include "builtins.def"
218 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
219 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
220 #include "internal-fn.def"
225 /* Tree code classes. Each tree_code has an associated code class
226 represented by a TREE_CODE_CLASS. */
227 enum tree_code_class
{
228 tcc_exceptional
, /* An exceptional code (fits no category). */
229 tcc_constant
, /* A constant. */
230 /* Order of tcc_type and tcc_declaration is important. */
231 tcc_type
, /* A type object code. */
232 tcc_declaration
, /* A declaration (also serving as variable refs). */
233 tcc_reference
, /* A reference to storage. */
234 tcc_comparison
, /* A comparison expression. */
235 tcc_unary
, /* A unary arithmetic expression. */
236 tcc_binary
, /* A binary arithmetic expression. */
237 tcc_statement
, /* A statement expression, which have side effects
238 but usually no interesting value. */
239 tcc_vl_exp
, /* A function call or other expression with a
240 variable-length operand vector. */
241 tcc_expression
/* Any other expression. */
244 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
245 the tables omp_clause_num_ops and omp_clause_code_name. */
246 enum omp_clause_code
{
247 /* Clause zero is special-cased inside the parser
248 (c_parser_omp_variable_list). */
249 OMP_CLAUSE_ERROR
= 0,
251 /* OpenACC/OpenMP clause: private (variable_list). */
254 /* OpenMP clause: shared (variable_list). */
257 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
258 OMP_CLAUSE_FIRSTPRIVATE
,
260 /* OpenMP clause: lastprivate (variable_list). */
261 OMP_CLAUSE_LASTPRIVATE
,
263 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
264 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
265 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
266 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
268 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
269 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
270 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
271 VAR_DECL placeholder, used like the above for C/C++ array
273 OMP_CLAUSE_REDUCTION
,
275 /* OpenMP clause: copyin (variable_list). */
278 /* OpenMP clause: copyprivate (variable_list). */
279 OMP_CLAUSE_COPYPRIVATE
,
281 /* OpenMP clause: linear (variable-list[:linear-step]). */
284 /* OpenMP clause: aligned (variable-list[:alignment]). */
287 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
290 /* OpenMP clause: uniform (argument-list). */
293 /* OpenMP clause: to (extended-list).
294 Only when it appears in declare target. */
295 OMP_CLAUSE_TO_DECLARE
,
297 /* OpenMP clause: link (variable-list). */
300 /* OpenMP clause: from (variable-list). */
303 /* OpenMP clause: to (variable-list). */
306 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
307 device, host (self), present, present_or_copy (pcopy), present_or_copyin
308 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
311 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
314 /* OpenACC clause: use_device (variable_list).
315 OpenMP clause: use_device_ptr (variable-list). */
316 OMP_CLAUSE_USE_DEVICE_PTR
,
318 /* OpenMP clause: is_device_ptr (variable-list). */
319 OMP_CLAUSE_IS_DEVICE_PTR
,
321 /* Internal structure to hold OpenACC cache directive's variable-list.
322 #pragma acc cache (variable-list). */
325 /* OpenACC clause: gang [(gang-argument-list)].
327 gang-argument-list: [gang-argument-list, ] gang-argument
328 gang-argument: [num:] integer-expression
329 | static: size-expression
330 size-expression: * | integer-expression. */
333 /* OpenACC clause: async [(integer-expression)]. */
336 /* OpenACC clause: wait [(integer-expression-list)]. */
339 /* OpenACC clause: auto. */
342 /* OpenACC clause: seq. */
345 /* Internal clause: temporary for combined loops expansion. */
346 OMP_CLAUSE__LOOPTEMP_
,
348 /* OpenACC/OpenMP clause: if (scalar-expression). */
351 /* OpenMP clause: num_threads (integer-expression). */
352 OMP_CLAUSE_NUM_THREADS
,
354 /* OpenMP clause: schedule. */
357 /* OpenMP clause: nowait. */
360 /* OpenMP clause: ordered [(constant-integer-expression)]. */
363 /* OpenACC/OpenMP clause: default. */
366 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
369 /* OpenMP clause: untied. */
372 /* OpenMP clause: final (scalar-expression). */
375 /* OpenMP clause: mergeable. */
376 OMP_CLAUSE_MERGEABLE
,
378 /* OpenMP clause: device (integer-expression). */
381 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
382 OMP_CLAUSE_DIST_SCHEDULE
,
384 /* OpenMP clause: inbranch. */
387 /* OpenMP clause: notinbranch. */
388 OMP_CLAUSE_NOTINBRANCH
,
390 /* OpenMP clause: num_teams(integer-expression). */
391 OMP_CLAUSE_NUM_TEAMS
,
393 /* OpenMP clause: thread_limit(integer-expression). */
394 OMP_CLAUSE_THREAD_LIMIT
,
396 /* OpenMP clause: proc_bind ({master,close,spread}). */
397 OMP_CLAUSE_PROC_BIND
,
399 /* OpenMP clause: safelen (constant-integer-expression). */
402 /* OpenMP clause: simdlen (constant-integer-expression). */
405 /* OpenMP clause: for. */
408 /* OpenMP clause: parallel. */
411 /* OpenMP clause: sections. */
414 /* OpenMP clause: taskgroup. */
415 OMP_CLAUSE_TASKGROUP
,
417 /* OpenMP clause: priority (integer-expression). */
420 /* OpenMP clause: grainsize (integer-expression). */
421 OMP_CLAUSE_GRAINSIZE
,
423 /* OpenMP clause: num_tasks (integer-expression). */
424 OMP_CLAUSE_NUM_TASKS
,
426 /* OpenMP clause: nogroup. */
429 /* OpenMP clause: threads. */
432 /* OpenMP clause: simd. */
435 /* OpenMP clause: hint (integer-expression). */
438 /* OpenMP clause: defaultmap (tofrom: scalar). */
439 OMP_CLAUSE_DEFAULTMAP
,
441 /* Internally used only clause, holding SIMD uid. */
442 OMP_CLAUSE__SIMDUID_
,
444 /* Internally used only clause, flag whether this is SIMT simd
448 /* OpenACC clause: independent. */
449 OMP_CLAUSE_INDEPENDENT
,
451 /* OpenACC clause: worker [( [num:] integer-expression)]. */
454 /* OpenACC clause: vector [( [length:] integer-expression)]. */
457 /* OpenACC clause: num_gangs (integer-expression). */
458 OMP_CLAUSE_NUM_GANGS
,
460 /* OpenACC clause: num_workers (integer-expression). */
461 OMP_CLAUSE_NUM_WORKERS
,
463 /* OpenACC clause: vector_length (integer-expression). */
464 OMP_CLAUSE_VECTOR_LENGTH
,
466 /* OpenACC clause: tile ( size-expr-list ). */
469 /* OpenMP internal-only clause to specify grid dimensions of a gridified
475 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
476 enum tree_node_structure_enum
{
477 #include "treestruct.def"
482 enum omp_clause_schedule_kind
{
483 OMP_CLAUSE_SCHEDULE_STATIC
,
484 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
485 OMP_CLAUSE_SCHEDULE_GUIDED
,
486 OMP_CLAUSE_SCHEDULE_AUTO
,
487 OMP_CLAUSE_SCHEDULE_RUNTIME
,
488 OMP_CLAUSE_SCHEDULE_MASK
= (1 << 3) - 1,
489 OMP_CLAUSE_SCHEDULE_MONOTONIC
= (1 << 3),
490 OMP_CLAUSE_SCHEDULE_NONMONOTONIC
= (1 << 4),
491 OMP_CLAUSE_SCHEDULE_LAST
= 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC
- 1
494 enum omp_clause_default_kind
{
495 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
496 OMP_CLAUSE_DEFAULT_SHARED
,
497 OMP_CLAUSE_DEFAULT_NONE
,
498 OMP_CLAUSE_DEFAULT_PRIVATE
,
499 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
500 OMP_CLAUSE_DEFAULT_PRESENT
,
501 OMP_CLAUSE_DEFAULT_LAST
504 /* There is a TYPE_QUAL value for each type qualifier. They can be
505 combined by bitwise-or to form the complete set of qualifiers for a
508 TYPE_UNQUALIFIED
= 0x0,
509 TYPE_QUAL_CONST
= 0x1,
510 TYPE_QUAL_VOLATILE
= 0x2,
511 TYPE_QUAL_RESTRICT
= 0x4,
512 TYPE_QUAL_ATOMIC
= 0x8
515 /* Standard named or nameless data types of the C compiler. */
545 TI_INTEGER_MINUS_ONE
,
566 /* The _FloatN and _FloatNx types must be consecutive, and in the
567 same sequence as the corresponding complex types, which must also
568 be consecutive; _FloatN must come before _FloatNx; the order must
569 also be the same as in the floatn_nx_types array and the RID_*
570 values in c-common.h. This is so that iterations over these
571 types work as intended. */
573 TI_FLOATN_TYPE_FIRST
= TI_FLOAT16_TYPE
,
574 TI_FLOATN_NX_TYPE_FIRST
= TI_FLOAT16_TYPE
,
578 TI_FLOATN_TYPE_LAST
= TI_FLOAT128_TYPE
,
579 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
581 TI_FLOATNX_TYPE_FIRST
= TI_FLOAT32X_TYPE
,
584 TI_FLOATNX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
585 TI_FLOATN_NX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
586 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
587 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
588 - TI_FLOATN_NX_TYPE_FIRST \
591 /* Put the complex types after their component types, so that in (sequential)
592 tree streaming we can assert that their component types have already been
593 handled (see tree-streamer.c:record_common_node). */
594 TI_COMPLEX_INTEGER_TYPE
,
595 TI_COMPLEX_FLOAT_TYPE
,
596 TI_COMPLEX_DOUBLE_TYPE
,
597 TI_COMPLEX_LONG_DOUBLE_TYPE
,
599 TI_COMPLEX_FLOAT16_TYPE
,
600 TI_COMPLEX_FLOATN_NX_TYPE_FIRST
= TI_COMPLEX_FLOAT16_TYPE
,
601 TI_COMPLEX_FLOAT32_TYPE
,
602 TI_COMPLEX_FLOAT64_TYPE
,
603 TI_COMPLEX_FLOAT128_TYPE
,
604 TI_COMPLEX_FLOAT32X_TYPE
,
605 TI_COMPLEX_FLOAT64X_TYPE
,
606 TI_COMPLEX_FLOAT128X_TYPE
,
610 TI_LONG_DOUBLE_PTR_TYPE
,
620 TI_VA_LIST_GPR_COUNTER_FIELD
,
621 TI_VA_LIST_FPR_COUNTER_FIELD
,
624 TI_CONST_TM_PTR_TYPE
,
626 TI_CONST_FENV_T_PTR_TYPE
,
627 TI_FEXCEPT_T_PTR_TYPE
,
628 TI_CONST_FEXCEPT_T_PTR_TYPE
,
629 TI_POINTER_SIZED_TYPE
,
631 TI_POINTER_BOUNDS_TYPE
,
636 TI_DFLOAT32_PTR_TYPE
,
637 TI_DFLOAT64_PTR_TYPE
,
638 TI_DFLOAT128_PTR_TYPE
,
651 TI_SAT_ULLFRACT_TYPE
,
667 TI_SAT_ULLACCUM_TYPE
,
713 TI_OPTIMIZATION_DEFAULT
,
714 TI_OPTIMIZATION_CURRENT
,
715 TI_TARGET_OPTION_DEFAULT
,
716 TI_TARGET_OPTION_CURRENT
,
717 TI_CURRENT_TARGET_PRAGMA
,
718 TI_CURRENT_OPTIMIZE_PRAGMA
,
723 /* An enumeration of the standard C integer types. These must be
724 ordered so that shorter types appear before longer ones, and so
725 that signed types appear before unsigned ones, for the correct
726 functioning of interpret_integer() in c-lex.c. */
727 enum integer_type_kind
{
738 itk_unsigned_long_long
,
752 /* A pointer-to-function member type looks like:
759 If __pfn is NULL, it is a NULL pointer-to-member-function.
761 (Because the vtable is always the first thing in the object, we
762 don't need its offset.) If the function is virtual, then PFN is
763 one plus twice the index into the vtable; otherwise, it is just a
764 pointer to the function.
766 Unfortunately, using the lowest bit of PFN doesn't work in
767 architectures that don't impose alignment requirements on function
768 addresses, or that use the lowest bit to tell one ISA from another,
769 for example. For such architectures, we use the lowest bit of
770 DELTA instead of the lowest bit of the PFN, and DELTA will be
772 enum ptrmemfunc_vbit_where_t
{
773 ptrmemfunc_vbit_in_pfn
,
774 ptrmemfunc_vbit_in_delta
777 /* Flags that may be passed in the third argument of decl_attributes, and
778 to handler functions for attributes. */
779 enum attribute_flags
{
780 /* The type passed in is the type of a DECL, and any attributes that
781 should be passed in again to be applied to the DECL rather than the
782 type should be returned. */
783 ATTR_FLAG_DECL_NEXT
= 1,
784 /* The type passed in is a function return type, and any attributes that
785 should be passed in again to be applied to the function type rather
786 than the return type should be returned. */
787 ATTR_FLAG_FUNCTION_NEXT
= 2,
788 /* The type passed in is an array element type, and any attributes that
789 should be passed in again to be applied to the array type rather
790 than the element type should be returned. */
791 ATTR_FLAG_ARRAY_NEXT
= 4,
792 /* The type passed in is a structure, union or enumeration type being
793 created, and should be modified in place. */
794 ATTR_FLAG_TYPE_IN_PLACE
= 8,
795 /* The attributes are being applied by default to a library function whose
796 name indicates known behavior, and should be silently ignored if they
797 are not in fact compatible with the function type. */
798 ATTR_FLAG_BUILT_IN
= 16,
799 /* A given attribute has been parsed as a C++-11 attribute. */
803 /* Types used to represent sizes. */
804 enum size_type_kind
{
805 stk_sizetype
, /* Normal representation of sizes in bytes. */
806 stk_ssizetype
, /* Signed representation of sizes in bytes. */
807 stk_bitsizetype
, /* Normal representation of sizes in bits. */
808 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
812 enum operand_equal_flag
{
815 OEP_MATCH_SIDE_EFFECTS
= 4,
817 /* Internal within operand_equal_p: */
818 OEP_NO_HASH_CHECK
= 16,
819 /* Internal within inchash::add_expr: */
821 /* Makes operand_equal_p handle more expressions: */
822 OEP_LEXICOGRAPHIC
= 64
825 /* Enum and arrays used for tree allocation stats.
826 Keep in sync with tree.c:tree_node_kind_names. */
827 enum tree_node_kind
{
847 enum annot_expr_kind
{
848 annot_expr_ivdep_kind
,
849 annot_expr_unroll_kind
,
850 annot_expr_no_vector_kind
,
851 annot_expr_vector_kind
,
852 annot_expr_parallel_kind
,
856 /*---------------------------------------------------------------------------
858 ---------------------------------------------------------------------------*/
859 /* When processing aliases at the symbol table level, we need the
860 declaration of target. For this reason we need to queue aliases and
861 process them after all declarations has been produced. */
862 struct GTY(()) alias_pair
{
867 /* An initialization priority. */
868 typedef unsigned short priority_type
;
870 /* The type of a callback function for walking over tree structure. */
871 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
873 /* The type of a callback function that represents a custom walk_tree. */
874 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
875 void *, hash_set
<tree
> *);
878 /*---------------------------------------------------------------------------
880 ---------------------------------------------------------------------------*/
881 /* A tree node can represent a data type, a variable, an expression
882 or a statement. Each node has a TREE_CODE which says what kind of
883 thing it represents. Some common codes are:
884 INTEGER_TYPE -- represents a type of integers.
885 ARRAY_TYPE -- represents a type of pointer.
886 VAR_DECL -- represents a declared variable.
887 INTEGER_CST -- represents a constant integer value.
888 PLUS_EXPR -- represents a sum (an expression).
890 As for the contents of a tree node: there are some fields
891 that all nodes share. Each TREE_CODE has various special-purpose
892 fields as well. The fields of a node are never accessed directly,
893 always through accessor macros. */
895 /* Every kind of tree node starts with this structure,
896 so all nodes have these fields.
898 See the accessor macros, defined below, for documentation of the
899 fields, and the table below which connects the fields and the
902 struct GTY(()) tree_base
{
903 ENUM_BITFIELD(tree_code
) code
: 16;
905 unsigned side_effects_flag
: 1;
906 unsigned constant_flag
: 1;
907 unsigned addressable_flag
: 1;
908 unsigned volatile_flag
: 1;
909 unsigned readonly_flag
: 1;
910 unsigned asm_written_flag
: 1;
911 unsigned nowarning_flag
: 1;
912 unsigned visited
: 1;
914 unsigned used_flag
: 1;
915 unsigned nothrow_flag
: 1;
916 unsigned static_flag
: 1;
917 unsigned public_flag
: 1;
918 unsigned private_flag
: 1;
919 unsigned protected_flag
: 1;
920 unsigned deprecated_flag
: 1;
921 unsigned default_def_flag
: 1;
924 /* The bits in the following structure should only be used with
925 accessor macros that constrain inputs with tree checking. */
927 unsigned lang_flag_0
: 1;
928 unsigned lang_flag_1
: 1;
929 unsigned lang_flag_2
: 1;
930 unsigned lang_flag_3
: 1;
931 unsigned lang_flag_4
: 1;
932 unsigned lang_flag_5
: 1;
933 unsigned lang_flag_6
: 1;
934 unsigned saturating_flag
: 1;
936 unsigned unsigned_flag
: 1;
937 unsigned packed_flag
: 1;
938 unsigned user_align
: 1;
939 unsigned nameless_flag
: 1;
940 unsigned atomic_flag
: 1;
945 /* This field is only used with TREE_TYPE nodes; the only reason it is
946 present in tree_base instead of tree_type is to save space. The size
947 of the field must be large enough to hold addr_space_t values. */
948 unsigned address_space
: 8;
951 /* The following fields are present in tree_base to save space. The
952 nodes using them do not require any of the flags above and so can
953 make better use of the 4-byte sized word. */
955 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
957 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
958 its native precision. */
959 unsigned char unextended
;
961 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
962 wider precisions based on its TYPE_SIGN. */
963 unsigned char extended
;
965 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
966 offset_int precision, with smaller integers being extended
967 according to their TYPE_SIGN. This is equal to one of the two
968 fields above but is cached for speed. */
969 unsigned char offset
;
972 /* VEC length. This field is only used with TREE_VEC. */
975 /* This field is only used with VECTOR_CST. */
977 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
978 unsigned int log2_npatterns
: 8;
980 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
981 unsigned int nelts_per_pattern
: 8;
983 /* For future expansion. */
984 unsigned int unused
: 16;
987 /* SSA version number. This field is only used with SSA_NAME. */
988 unsigned int version
;
990 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
991 unsigned int chrec_var
;
993 /* Internal function code. */
994 enum internal_fn ifn
;
996 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
997 expression trees and specify known data non-dependences. For
998 two memory references in a function they are known to not
999 alias if dependence_info.clique are equal and dependence_info.base
1002 unsigned short clique
;
1003 unsigned short base
;
1005 } GTY((skip(""))) u
;
1008 /* The following table lists the uses of each of the above flags and
1009 for which types of nodes they are defined.
1014 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1017 CONSTRUCTOR, IDENTIFIER_NODE
1020 CALL_EXPR_TAILCALL in
1026 PREDICT_EXPR_OUTCOME in
1032 VAR_DECL, FUNCTION_DECL
1035 TREE_NO_TRAMPOLINE in
1041 TREE_SYMBOL_REFERENCED in
1045 TARGET_EXPR, WITH_CLEANUP_EXPR
1047 TRY_CATCH_IS_CLEANUP in
1053 TYPE_REF_CAN_ALIAS_ALL in
1054 POINTER_TYPE, REFERENCE_TYPE
1062 TRANSACTION_EXPR_OUTER in
1065 SSA_NAME_ANTI_RANGE_P in
1074 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1077 VAR_DECL, FUNCTION_DECL
1080 CONSTRUCTOR_NO_CLEARING in
1086 CALL_EXPR_VA_ARG_PACK in
1089 TYPE_CACHED_VALUES_P in
1092 SAVE_EXPR_RESOLVED_P in
1095 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1096 OMP_CLAUSE_LASTPRIVATE
1098 OMP_CLAUSE_PRIVATE_DEBUG in
1101 OMP_CLAUSE_LINEAR_NO_COPYIN in
1104 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1107 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1108 OMP_CLAUSE_REDUCTION
1110 TRANSACTION_EXPR_RELAXED in
1113 FALLTHROUGH_LABEL_P in
1116 SSA_NAME_IS_VIRTUAL_OPERAND in
1124 CALL_EXPR_RETURN_SLOT_OPT in
1130 OMP_PARALLEL_COMBINED in
1133 OMP_ATOMIC_SEQ_CST in
1136 OMP_CLAUSE_PRIVATE_OUTER_REF in
1139 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1142 TYPE_REF_IS_RVALUE in
1154 CALL_FROM_THUNK_P and
1155 CALL_ALLOCA_FOR_VAR_P in
1158 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1163 TREE_SIDE_EFFECTS in
1173 TREE_THIS_VOLATILE in
1196 TYPE_SIZES_GIMPLIFIED in
1210 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1211 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1214 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1231 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1233 SSA_NAME_IN_FREE_LIST in
1245 IDENTIFIER_TRANSPARENT_ALIAS in
1251 all trees (used liberally by many passes)
1255 TYPE_REVERSE_STORAGE_ORDER in
1256 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1261 VAR_DECL_IS_VIRTUAL_OPERAND in
1276 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1278 TYPE_VECTOR_OPAQUE in
1281 SSA_NAME_IS_DEFAULT_DEF in
1284 DECL_NONLOCAL_FRAME in
1287 REF_REVERSE_STORAGE_ORDER in
1288 BIT_FIELD_REF, MEM_REF
1290 FUNC_ADDR_BY_DESCRIPTOR in
1293 CALL_EXPR_BY_DESCRIPTOR in
1297 struct GTY(()) tree_typed
{
1298 struct tree_base base
;
1302 struct GTY(()) tree_common
{
1303 struct tree_typed typed
;
1307 struct GTY(()) tree_int_cst
{
1308 struct tree_typed typed
;
1309 HOST_WIDE_INT val
[1];
1313 struct GTY(()) tree_real_cst
{
1314 struct tree_typed typed
;
1315 struct real_value
* real_cst_ptr
;
1318 struct GTY(()) tree_fixed_cst
{
1319 struct tree_typed typed
;
1320 struct fixed_value
* fixed_cst_ptr
;
1323 struct GTY(()) tree_string
{
1324 struct tree_typed typed
;
1329 struct GTY(()) tree_complex
{
1330 struct tree_typed typed
;
1335 struct GTY(()) tree_vector
{
1336 struct tree_typed typed
;
1337 tree
GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts
[1];
1340 struct GTY(()) tree_identifier
{
1341 struct tree_common common
;
1342 struct ht_identifier id
;
1345 struct GTY(()) tree_list
{
1346 struct tree_common common
;
1351 struct GTY(()) tree_vec
{
1352 struct tree_common common
;
1353 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1356 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1357 element. INDEX can optionally design the position of VALUE: in arrays,
1358 it is the index where VALUE has to be placed; in structures, it is the
1359 FIELD_DECL of the member. */
1360 struct GTY(()) constructor_elt
{
1365 struct GTY(()) tree_constructor
{
1366 struct tree_typed typed
;
1367 vec
<constructor_elt
, va_gc
> *elts
;
1370 enum omp_clause_depend_kind
1372 OMP_CLAUSE_DEPEND_IN
,
1373 OMP_CLAUSE_DEPEND_OUT
,
1374 OMP_CLAUSE_DEPEND_INOUT
,
1375 OMP_CLAUSE_DEPEND_SOURCE
,
1376 OMP_CLAUSE_DEPEND_SINK
,
1377 OMP_CLAUSE_DEPEND_LAST
1380 enum omp_clause_proc_bind_kind
1382 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1383 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1384 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1385 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1386 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1387 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1388 OMP_CLAUSE_PROC_BIND_LAST
1391 enum omp_clause_linear_kind
1393 OMP_CLAUSE_LINEAR_DEFAULT
,
1394 OMP_CLAUSE_LINEAR_REF
,
1395 OMP_CLAUSE_LINEAR_VAL
,
1396 OMP_CLAUSE_LINEAR_UVAL
1399 struct GTY(()) tree_exp
{
1400 struct tree_typed typed
;
1402 tree
GTY ((special ("tree_exp"),
1403 desc ("TREE_CODE ((tree) &%0)")))
1407 /* Immediate use linking structure. This structure is used for maintaining
1408 a doubly linked list of uses of an SSA_NAME. */
1409 struct GTY(()) ssa_use_operand_t
{
1410 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1411 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1412 /* Immediate uses for a given SSA name are maintained as a cyclic
1413 list. To recognize the root of this list, the location field
1414 needs to point to the original SSA name. Since statements and
1415 SSA names are of different data types, we need this union. See
1416 the explanation in struct imm_use_iterator. */
1417 union { gimple
*stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1418 tree
*GTY((skip(""))) use
;
1421 struct GTY(()) tree_ssa_name
{
1422 struct tree_typed typed
;
1424 /* _DECL wrapped by this SSA name. */
1427 /* Statement that defines this SSA name. */
1430 /* Value range information. */
1431 union ssa_name_info_type
{
1432 /* Pointer attributes used for alias analysis. */
1433 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1434 /* Value range attributes used for zero/sign extension elimination. */
1435 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1436 } GTY ((desc ("%1.typed.type ?" \
1437 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1439 /* Immediate uses list for this SSA_NAME. */
1440 struct ssa_use_operand_t imm_uses
;
1443 struct GTY(()) phi_arg_d
{
1444 /* imm_use MUST be the first element in struct because we do some
1445 pointer arithmetic with it. See phi_arg_index_from_use. */
1446 struct ssa_use_operand_t imm_use
;
1451 struct GTY(()) tree_omp_clause
{
1452 struct tree_common common
;
1454 enum omp_clause_code code
;
1455 union omp_clause_subcode
{
1456 enum omp_clause_default_kind default_kind
;
1457 enum omp_clause_schedule_kind schedule_kind
;
1458 enum omp_clause_depend_kind depend_kind
;
1459 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1460 unsigned int map_kind
;
1461 enum omp_clause_proc_bind_kind proc_bind_kind
;
1462 enum tree_code reduction_code
;
1463 enum omp_clause_linear_kind linear_kind
;
1464 enum tree_code if_modifier
;
1465 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1466 construct describes. */
1467 unsigned int dimension
;
1468 } GTY ((skip
)) subcode
;
1470 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1472 gimple_seq gimple_reduction_init
;
1473 gimple_seq gimple_reduction_merge
;
1475 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1479 struct GTY(()) tree_block
{
1480 struct tree_base base
;
1483 unsigned abstract_flag
: 1;
1484 unsigned block_num
: 31;
1487 location_t end_locus
;
1490 vec
<tree
, va_gc
> *nonlocalized_vars
;
1494 tree abstract_origin
;
1495 tree fragment_origin
;
1496 tree fragment_chain
;
1498 /* Pointer to the DWARF lexical block. */
1499 struct die_struct
*die
;
1502 struct GTY(()) tree_type_common
{
1503 struct tree_common common
;
1509 unsigned int precision
: 10;
1510 unsigned no_force_blk_flag
: 1;
1511 unsigned needs_constructing_flag
: 1;
1512 unsigned transparent_aggr_flag
: 1;
1513 unsigned restrict_flag
: 1;
1514 unsigned contains_placeholder_bits
: 2;
1516 ENUM_BITFIELD(machine_mode
) mode
: 8;
1518 unsigned string_flag
: 1;
1519 unsigned lang_flag_0
: 1;
1520 unsigned lang_flag_1
: 1;
1521 unsigned lang_flag_2
: 1;
1522 unsigned lang_flag_3
: 1;
1523 unsigned lang_flag_4
: 1;
1524 unsigned lang_flag_5
: 1;
1525 unsigned lang_flag_6
: 1;
1526 unsigned lang_flag_7
: 1;
1528 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1529 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1530 the latter being usually the larger. For ELF it is 8<<28,
1531 so we need to store the value 32 (not 31, as we need the zero
1532 as well), hence six bits. */
1534 unsigned warn_if_not_align
: 6;
1535 unsigned typeless_storage
: 1;
1536 unsigned empty_flag
: 1;
1537 unsigned spare
: 17;
1539 alias_set_type alias_set
;
1542 union tree_type_symtab
{
1543 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1544 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1545 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1553 struct GTY(()) tree_type_with_lang_specific
{
1554 struct tree_type_common common
;
1555 /* Points to a structure whose details depend on the language in use. */
1556 struct lang_type
*lang_specific
;
1559 struct GTY(()) tree_type_non_common
{
1560 struct tree_type_with_lang_specific with_lang_specific
;
1567 struct GTY (()) tree_binfo
{
1568 struct tree_common common
;
1574 vec
<tree
, va_gc
> *base_accesses
;
1580 vec
<tree
, va_gc
> base_binfos
;
1583 struct GTY(()) tree_decl_minimal
{
1584 struct tree_common common
;
1591 struct GTY(()) tree_decl_common
{
1592 struct tree_decl_minimal common
;
1595 ENUM_BITFIELD(machine_mode
) mode
: 8;
1597 unsigned nonlocal_flag
: 1;
1598 unsigned virtual_flag
: 1;
1599 unsigned ignored_flag
: 1;
1600 unsigned abstract_flag
: 1;
1601 unsigned artificial_flag
: 1;
1602 unsigned preserve_flag
: 1;
1603 unsigned debug_expr_is_from
: 1;
1605 unsigned lang_flag_0
: 1;
1606 unsigned lang_flag_1
: 1;
1607 unsigned lang_flag_2
: 1;
1608 unsigned lang_flag_3
: 1;
1609 unsigned lang_flag_4
: 1;
1610 unsigned lang_flag_5
: 1;
1611 unsigned lang_flag_6
: 1;
1612 unsigned lang_flag_7
: 1;
1613 unsigned lang_flag_8
: 1;
1615 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1616 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */
1617 unsigned decl_flag_0
: 1;
1618 /* In FIELD_DECL, this is DECL_BIT_FIELD
1619 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1620 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1621 unsigned decl_flag_1
: 1;
1622 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1623 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1624 DECL_HAS_VALUE_EXPR_P. */
1625 unsigned decl_flag_2
: 1;
1626 /* In FIELD_DECL, this is DECL_PADDING_P. */
1627 unsigned decl_flag_3
: 1;
1628 /* Logically, these two would go in a theoretical base shared by var and
1630 unsigned gimple_reg_flag
: 1;
1631 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1632 unsigned decl_by_reference_flag
: 1;
1633 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1634 unsigned decl_read_flag
: 1;
1635 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1636 unsigned decl_nonshareable_flag
: 1;
1638 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1639 unsigned int off_align
: 6;
1641 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1642 unsigned int align
: 6;
1644 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1645 TYPE_WARN_IF_NOT_ALIGN. */
1646 unsigned int warn_if_not_align
: 6;
1648 /* 14 bits unused. */
1650 /* UID for points-to sets, stable over copying from inlining. */
1651 unsigned int pt_uid
;
1656 tree abstract_origin
;
1658 /* Points to a structure whose details depend on the language in use. */
1659 struct lang_decl
*lang_specific
;
1662 struct GTY(()) tree_decl_with_rtl
{
1663 struct tree_decl_common common
;
1667 struct GTY(()) tree_field_decl
{
1668 struct tree_decl_common common
;
1671 tree bit_field_type
;
1677 struct GTY(()) tree_label_decl
{
1678 struct tree_decl_with_rtl common
;
1680 int eh_landing_pad_nr
;
1683 struct GTY(()) tree_result_decl
{
1684 struct tree_decl_with_rtl common
;
1687 struct GTY(()) tree_const_decl
{
1688 struct tree_decl_common common
;
1691 struct GTY(()) tree_parm_decl
{
1692 struct tree_decl_with_rtl common
;
1696 struct GTY(()) tree_decl_with_vis
{
1697 struct tree_decl_with_rtl common
;
1698 tree assembler_name
;
1699 struct symtab_node
*symtab_node
;
1701 /* Belong to VAR_DECL exclusively. */
1702 unsigned defer_output
: 1;
1703 unsigned hard_register
: 1;
1704 unsigned common_flag
: 1;
1705 unsigned in_text_section
: 1;
1706 unsigned in_constant_pool
: 1;
1707 unsigned dllimport_flag
: 1;
1708 /* Don't belong to VAR_DECL exclusively. */
1709 unsigned weak_flag
: 1;
1711 unsigned seen_in_bind_expr
: 1;
1712 unsigned comdat_flag
: 1;
1713 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1714 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1715 unsigned visibility_specified
: 1;
1717 /* Belong to FUNCTION_DECL exclusively. */
1718 unsigned init_priority_p
: 1;
1719 /* Used by C++ only. Might become a generic decl flag. */
1720 unsigned shadowed_for_var_p
: 1;
1721 /* Belong to FUNCTION_DECL exclusively. */
1722 unsigned cxx_constructor
: 1;
1723 /* Belong to FUNCTION_DECL exclusively. */
1724 unsigned cxx_destructor
: 1;
1725 /* Belong to FUNCTION_DECL exclusively. */
1727 /* Belong to FUNCTION_DECL exclusively. */
1728 unsigned regdecl_flag
: 1;
1729 /* 14 unused bits. */
1732 struct GTY(()) tree_var_decl
{
1733 struct tree_decl_with_vis common
;
1736 struct GTY(()) tree_decl_non_common
{
1737 struct tree_decl_with_vis common
;
1738 /* Almost all FE's use this. */
1742 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1743 arguments/result/saved_tree fields by front ends. It was either inherit
1744 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1745 which seemed a bit strange. */
1747 struct GTY(()) tree_function_decl
{
1748 struct tree_decl_non_common common
;
1752 /* Arguments of the function. */
1754 /* The personality function. Used for stack unwinding. */
1757 /* Function specific options that are used by this function. */
1758 tree function_specific_target
; /* target options */
1759 tree function_specific_optimization
; /* optimization options */
1761 /* Generic function body. */
1763 /* Index within a virtual table. */
1766 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1767 DECL_FUNCTION_CODE. Otherwise unused.
1768 ??? The bitfield needs to be able to hold all target function
1770 ENUM_BITFIELD(built_in_function
) function_code
: 12;
1771 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1773 unsigned static_ctor_flag
: 1;
1774 unsigned static_dtor_flag
: 1;
1776 unsigned uninlinable
: 1;
1777 unsigned possibly_inlined
: 1;
1778 unsigned novops_flag
: 1;
1779 unsigned returns_twice_flag
: 1;
1780 unsigned malloc_flag
: 1;
1781 unsigned operator_new_flag
: 1;
1782 unsigned declared_inline_flag
: 1;
1783 unsigned no_inline_warning_flag
: 1;
1785 unsigned no_instrument_function_entry_exit
: 1;
1786 unsigned no_limit_stack
: 1;
1787 unsigned disregard_inline_limits
: 1;
1788 unsigned pure_flag
: 1;
1789 unsigned looping_const_or_pure_flag
: 1;
1790 unsigned has_debug_args_flag
: 1;
1791 unsigned tm_clone_flag
: 1;
1792 unsigned versioned_function
: 1;
1796 struct GTY(()) tree_translation_unit_decl
{
1797 struct tree_decl_common common
;
1798 /* Source language of this translation unit. Used for DWARF output. */
1799 const char * GTY((skip(""))) language
;
1800 /* TODO: Non-optimization used to build this translation unit. */
1801 /* TODO: Root of a partial DWARF tree for global types and decls. */
1804 struct GTY(()) tree_type_decl
{
1805 struct tree_decl_non_common common
;
1809 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1811 struct tree_statement_list_node
*prev
;
1812 struct tree_statement_list_node
*next
;
1816 struct GTY(()) tree_statement_list
1818 struct tree_typed typed
;
1819 struct tree_statement_list_node
*head
;
1820 struct tree_statement_list_node
*tail
;
1824 /* Optimization options used by a function. */
1826 struct GTY(()) tree_optimization_option
{
1827 struct tree_base base
;
1829 /* The optimization options used by the user. */
1830 struct cl_optimization
*opts
;
1832 /* Target optabs for this set of optimization options. This is of
1833 type `struct target_optabs *'. */
1834 void *GTY ((atomic
)) optabs
;
1836 /* The value of this_target_optabs against which the optabs above were
1838 struct target_optabs
*GTY ((skip
)) base_optabs
;
1841 /* Forward declaration, defined in target-globals.h. */
1843 struct GTY(()) target_globals
;
1845 /* Target options used by a function. */
1847 struct GTY(()) tree_target_option
{
1848 struct tree_base base
;
1850 /* Target globals for the corresponding target option. */
1851 struct target_globals
*globals
;
1853 /* The optimization options used by the user. */
1854 struct cl_target_option
*opts
;
1857 /* Define the overall contents of a tree node.
1858 It may be any of the structures declared above
1859 for various types of node. */
1860 union GTY ((ptr_alias (union lang_tree_node
),
1861 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1862 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1863 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1864 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1865 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1866 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1867 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1868 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1869 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1870 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1871 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1872 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1873 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1874 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1875 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1877 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1878 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1879 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1880 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1881 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1882 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1883 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1884 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1885 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1886 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1887 translation_unit_decl
;
1888 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1889 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1890 type_with_lang_specific
;
1891 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1893 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1894 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1895 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1896 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1897 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1898 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1899 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1900 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1901 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1902 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1903 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1906 /* Structure describing an attribute and a function to handle it. */
1907 struct attribute_spec
{
1908 /* The name of the attribute (without any leading or trailing __),
1909 or NULL to mark the end of a table of attributes. */
1911 /* The minimum length of the list of arguments of the attribute. */
1913 /* The maximum length of the list of arguments of the attribute
1914 (-1 for no maximum). */
1916 /* Whether this attribute requires a DECL. If it does, it will be passed
1917 from types of DECLs, function return types and array element types to
1918 the DECLs, function types and array types respectively; but when
1919 applied to a type in any other circumstances, it will be ignored with
1920 a warning. (If greater control is desired for a given attribute,
1921 this should be false, and the flags argument to the handler may be
1922 used to gain greater control in that case.) */
1924 /* Whether this attribute requires a type. If it does, it will be passed
1925 from a DECL to the type of that DECL. */
1927 /* Whether this attribute requires a function (or method) type. If it does,
1928 it will be passed from a function pointer type to the target type,
1929 and from a function return type (which is not itself a function
1930 pointer type) to the function type. */
1931 bool function_type_required
;
1932 /* Specifies if attribute affects type's identity. */
1933 bool affects_type_identity
;
1934 /* Function to handle this attribute. NODE points to the node to which
1935 the attribute is to be applied. If a DECL, it should be modified in
1936 place; if a TYPE, a copy should be created. NAME is the name of the
1937 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1938 of the arguments (which may be NULL). FLAGS gives further information
1939 about the context of the attribute. Afterwards, the attributes will
1940 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1941 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1942 as well as in any other cases when the attributes should not be added
1943 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1944 applied to another type or DECL later may be returned;
1945 otherwise the return value should be NULL_TREE. This pointer may be
1946 NULL if no special handling is required beyond the checks implied
1947 by the rest of this structure. */
1948 tree (*handler
) (tree
*node
, tree name
, tree args
,
1949 int flags
, bool *no_add_attrs
);
1951 /* Specifies the name of an attribute that's mutually exclusive with
1952 this one, and whether the relationship applies to the function,
1953 variable, or type form of the attribute. */
1961 /* An array of attribute exclusions describing names of other attributes
1962 that this attribute is mutually exclusive with. */
1963 const exclusions
*exclude
;
1966 /* These functions allow a front-end to perform a manual layout of a
1967 RECORD_TYPE. (For instance, if the placement of subsequent fields
1968 depends on the placement of fields so far.) Begin by calling
1969 start_record_layout. Then, call place_field for each of the
1970 fields. Then, call finish_record_layout. See layout_type for the
1971 default way in which these functions are used. */
1972 typedef struct record_layout_info_s
{
1973 /* The RECORD_TYPE that we are laying out. */
1975 /* The offset into the record so far, in bytes, not including bits in
1978 /* The last known alignment of SIZE. */
1979 unsigned int offset_align
;
1980 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1982 /* The alignment of the record so far, in bits. */
1983 unsigned int record_align
;
1984 /* The alignment of the record so far, ignoring #pragma pack and
1985 __attribute__ ((packed)), in bits. */
1986 unsigned int unpacked_align
;
1987 /* The previous field laid out. */
1989 /* The static variables (i.e., class variables, as opposed to
1990 instance variables) encountered in T. */
1991 vec
<tree
, va_gc
> *pending_statics
;
1992 /* Bits remaining in the current alignment group */
1993 int remaining_in_alignment
;
1994 /* True if we've seen a packed field that didn't have normal
1995 alignment anyway. */
1996 int packed_maybe_necessary
;
1997 } *record_layout_info
;
1999 /* Iterator for going through the function arguments. */
2000 struct function_args_iterator
{
2001 tree next
; /* TREE_LIST pointing to the next argument */
2004 /* Structures to map from a tree to another tree. */
2005 struct GTY(()) tree_map_base
{
2009 /* Map from a tree to another tree. */
2011 struct GTY((for_user
)) tree_map
{
2012 struct tree_map_base base
;
2017 /* Map from a decl tree to another tree. */
2018 struct GTY((for_user
)) tree_decl_map
{
2019 struct tree_map_base base
;
2023 /* Map from a tree to an int. */
2024 struct GTY((for_user
)) tree_int_map
{
2025 struct tree_map_base base
;
2029 /* Map from a decl tree to a tree vector. */
2030 struct GTY((for_user
)) tree_vec_map
{
2031 struct tree_map_base base
;
2032 vec
<tree
, va_gc
> *to
;
2035 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2036 have to go towards the end of tree.h so that union tree_node is fully
2037 defined by this point. */
2039 /* Structure containing iterator state. */
2040 struct call_expr_arg_iterator
{
2041 tree t
; /* the call_expr */
2042 int n
; /* argument count */
2043 int i
; /* next argument index */
2046 struct const_call_expr_arg_iterator
{
2047 const_tree t
; /* the call_expr */
2048 int n
; /* argument count */
2049 int i
; /* next argument index */
2052 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2053 function, and flags. */
2054 struct GTY(()) builtin_info_type
{
2056 /* Whether the user can use <xxx> instead of explicitly using calls
2057 to __builtin_<xxx>. */
2058 unsigned implicit_p
: 1;
2059 /* Whether the user has provided a declaration of <xxx>. */
2060 unsigned declared_p
: 1;
2063 /* Information about a _FloatN or _FloatNx type that may be
2065 struct floatn_type_info
{
2066 /* The number N in the type name. */
2068 /* Whether it is an extended type _FloatNx (true) or an interchange
2074 /*---------------------------------------------------------------------------
2076 ---------------------------------------------------------------------------*/
2077 /* Matrix describing the structures contained in a given tree code. */
2078 extern bool tree_contains_struct
[MAX_TREE_CODES
][64];
2080 /* Class of tree given its code. */
2081 extern const enum tree_code_class tree_code_type
[];
2083 /* Each tree code class has an associated string representation.
2084 These must correspond to the tree_code_class entries. */
2085 extern const char *const tree_code_class_strings
[];
2087 /* Number of argument-words in each kind of tree-node. */
2088 extern const unsigned char tree_code_length
[];
2090 /* Vector of all alias pairs for global symbols. */
2091 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
2093 /* Names of all the built_in classes. */
2094 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
2096 /* Names of all the built_in functions. */
2097 extern const char * built_in_names
[(int) END_BUILTINS
];
2099 /* Number of operands and names for each OMP_CLAUSE node. */
2100 extern unsigned const char omp_clause_num_ops
[];
2101 extern const char * const omp_clause_code_name
[];
2103 /* A vector of all translation-units. */
2104 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
2106 /* Vector of standard trees used by the C compiler. */
2107 extern GTY(()) tree global_trees
[TI_MAX
];
2109 /* The standard C integer types. Use integer_type_kind to index into
2111 extern GTY(()) tree integer_types
[itk_none
];
2113 /* Types used to represent sizes. */
2114 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
2116 /* Arrays for keeping track of tree node statistics. */
2117 extern int tree_node_counts
[];
2118 extern int tree_node_sizes
[];
2120 /* True if we are in gimple form and the actions of the folders need to
2121 be restricted. False if we are not in gimple form and folding is not
2122 restricted to creating gimple expressions. */
2123 extern bool in_gimple_form
;
2125 /* Functional interface to the builtin functions. */
2126 extern GTY(()) builtin_info_type builtin_info
[(int)END_BUILTINS
];
2128 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2129 extern unsigned int maximum_field_alignment
;
2131 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2132 extern GTY(()) tree current_function_decl
;
2134 /* Nonzero means a FUNC_BEGIN label was emitted. */
2135 extern GTY(()) const char * current_function_func_begin_label
;
2137 /* Information about the _FloatN and _FloatNx types. */
2138 extern const floatn_type_info floatn_nx_types
[NUM_FLOATN_NX_TYPES
];
2140 #endif // GCC_TREE_CORE_H