1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2019 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 #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 cannot 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"
168 /* Complex division routines in libgcc. These are done via builtins
169 because emit_library_call_value can't handle complex values. */
170 BUILT_IN_COMPLEX_MUL_MIN
,
171 BUILT_IN_COMPLEX_MUL_MAX
172 = BUILT_IN_COMPLEX_MUL_MIN
173 + MAX_MODE_COMPLEX_FLOAT
174 - MIN_MODE_COMPLEX_FLOAT
,
176 BUILT_IN_COMPLEX_DIV_MIN
,
177 BUILT_IN_COMPLEX_DIV_MAX
178 = BUILT_IN_COMPLEX_DIV_MIN
179 + MAX_MODE_COMPLEX_FLOAT
180 - MIN_MODE_COMPLEX_FLOAT
,
182 /* Upper bound on non-language-specific builtins. */
186 /* Internal functions. */
188 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
189 #include "internal-fn.def"
193 /* An enum that combines target-independent built-in functions with
194 internal functions, so that they can be treated in a similar way.
195 The numbers for built-in functions are the same as for the
196 built_in_function enum. The numbers for internal functions
197 start at END_BUITLINS. */
199 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
200 CFN_##ENUM = int (ENUM),
201 #include "builtins.def"
204 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
205 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
206 #include "internal-fn.def"
211 /* Tree code classes. Each tree_code has an associated code class
212 represented by a TREE_CODE_CLASS. */
213 enum tree_code_class
{
214 tcc_exceptional
, /* An exceptional code (fits no category). */
215 tcc_constant
, /* A constant. */
216 /* Order of tcc_type and tcc_declaration is important. */
217 tcc_type
, /* A type object code. */
218 tcc_declaration
, /* A declaration (also serving as variable refs). */
219 tcc_reference
, /* A reference to storage. */
220 tcc_comparison
, /* A comparison expression. */
221 tcc_unary
, /* A unary arithmetic expression. */
222 tcc_binary
, /* A binary arithmetic expression. */
223 tcc_statement
, /* A statement expression, which have side effects
224 but usually no interesting value. */
225 tcc_vl_exp
, /* A function call or other expression with a
226 variable-length operand vector. */
227 tcc_expression
/* Any other expression. */
230 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
231 the tables omp_clause_num_ops and omp_clause_code_name. */
232 enum omp_clause_code
{
233 /* Clause zero is special-cased inside the parser
234 (c_parser_omp_variable_list). */
235 OMP_CLAUSE_ERROR
= 0,
237 /* OpenACC/OpenMP clause: private (variable_list). */
240 /* OpenMP clause: shared (variable_list). */
243 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
244 OMP_CLAUSE_FIRSTPRIVATE
,
246 /* OpenMP clause: lastprivate (variable_list). */
247 OMP_CLAUSE_LASTPRIVATE
,
249 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
250 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
251 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
252 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
254 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
255 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
256 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
257 VAR_DECL placeholder, used like the above for C/C++ array
259 OMP_CLAUSE_REDUCTION
,
261 /* OpenMP clause: task_reduction (operator:variable_list). */
262 OMP_CLAUSE_TASK_REDUCTION
,
264 /* OpenMP clause: in_reduction (operator:variable_list). */
265 OMP_CLAUSE_IN_REDUCTION
,
267 /* OpenMP clause: copyin (variable_list). */
270 /* OpenMP clause: copyprivate (variable_list). */
271 OMP_CLAUSE_COPYPRIVATE
,
273 /* OpenMP clause: linear (variable-list[:linear-step]). */
276 /* OpenMP clause: aligned (variable-list[:alignment]). */
279 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
282 /* OpenMP clause: nontemporal (variable-list). */
283 OMP_CLAUSE_NONTEMPORAL
,
285 /* OpenMP clause: uniform (argument-list). */
288 /* OpenMP clause: to (extended-list).
289 Only when it appears in declare target. */
290 OMP_CLAUSE_TO_DECLARE
,
292 /* OpenMP clause: link (variable-list). */
295 /* OpenMP clause: from (variable-list). */
298 /* OpenMP clause: to (variable-list). */
301 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
302 device, host (self), present, present_or_copy (pcopy), present_or_copyin
303 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
306 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
309 /* OpenACC clause: use_device (variable-list).
310 OpenMP clause: use_device_ptr (ptr-list). */
311 OMP_CLAUSE_USE_DEVICE_PTR
,
313 /* OpenMP clause: use_device_addr (variable-list). */
314 OMP_CLAUSE_USE_DEVICE_ADDR
,
316 /* OpenMP clause: is_device_ptr (variable-list). */
317 OMP_CLAUSE_IS_DEVICE_PTR
,
319 /* OpenMP clause: inclusive (variable-list). */
320 OMP_CLAUSE_INCLUSIVE
,
322 /* OpenMP clause: exclusive (variable-list). */
323 OMP_CLAUSE_EXCLUSIVE
,
325 /* Internal structure to hold OpenACC cache directive's variable-list.
326 #pragma acc cache (variable-list). */
329 /* OpenACC clause: gang [(gang-argument-list)].
331 gang-argument-list: [gang-argument-list, ] gang-argument
332 gang-argument: [num:] integer-expression
333 | static: size-expression
334 size-expression: * | integer-expression. */
337 /* OpenACC clause: async [(integer-expression)]. */
340 /* OpenACC clause: wait [(integer-expression-list)]. */
343 /* OpenACC clause: auto. */
346 /* OpenACC clause: seq. */
349 /* Internal clause: temporary for combined loops expansion. */
350 OMP_CLAUSE__LOOPTEMP_
,
352 /* Internal clause: temporary for task reductions. */
353 OMP_CLAUSE__REDUCTEMP_
,
355 /* Internal clause: temporary for lastprivate(conditional:). */
356 OMP_CLAUSE__CONDTEMP_
,
358 /* Internal clause: temporary for inscan reductions. */
359 OMP_CLAUSE__SCANTEMP_
,
361 /* OpenACC/OpenMP clause: if (scalar-expression). */
364 /* OpenMP clause: num_threads (integer-expression). */
365 OMP_CLAUSE_NUM_THREADS
,
367 /* OpenMP clause: schedule. */
370 /* OpenMP clause: nowait. */
373 /* OpenMP clause: ordered [(constant-integer-expression)]. */
376 /* OpenACC/OpenMP clause: default. */
379 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
382 /* OpenMP clause: untied. */
385 /* OpenMP clause: final (scalar-expression). */
388 /* OpenMP clause: mergeable. */
389 OMP_CLAUSE_MERGEABLE
,
391 /* OpenMP clause: device (integer-expression). */
394 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
395 OMP_CLAUSE_DIST_SCHEDULE
,
397 /* OpenMP clause: inbranch. */
400 /* OpenMP clause: notinbranch. */
401 OMP_CLAUSE_NOTINBRANCH
,
403 /* OpenMP clause: num_teams(integer-expression). */
404 OMP_CLAUSE_NUM_TEAMS
,
406 /* OpenMP clause: thread_limit(integer-expression). */
407 OMP_CLAUSE_THREAD_LIMIT
,
409 /* OpenMP clause: proc_bind ({master,close,spread}). */
410 OMP_CLAUSE_PROC_BIND
,
412 /* OpenMP clause: safelen (constant-integer-expression). */
415 /* OpenMP clause: simdlen (constant-integer-expression). */
418 /* OpenMP clause: for. */
421 /* OpenMP clause: parallel. */
424 /* OpenMP clause: sections. */
427 /* OpenMP clause: taskgroup. */
428 OMP_CLAUSE_TASKGROUP
,
430 /* OpenMP clause: priority (integer-expression). */
433 /* OpenMP clause: grainsize (integer-expression). */
434 OMP_CLAUSE_GRAINSIZE
,
436 /* OpenMP clause: num_tasks (integer-expression). */
437 OMP_CLAUSE_NUM_TASKS
,
439 /* OpenMP clause: nogroup. */
442 /* OpenMP clause: threads. */
445 /* OpenMP clause: simd. */
448 /* OpenMP clause: hint (integer-expression). */
451 /* OpenMP clause: defaultmap (tofrom: scalar). */
452 OMP_CLAUSE_DEFAULTMAP
,
454 /* OpenMP clause: order (concurrent). */
457 /* OpenMP clause: bind (binding). */
460 /* Internally used only clause, holding SIMD uid. */
461 OMP_CLAUSE__SIMDUID_
,
463 /* Internally used only clause, flag whether this is SIMT simd
467 /* OpenACC clause: independent. */
468 OMP_CLAUSE_INDEPENDENT
,
470 /* OpenACC clause: worker [( [num:] integer-expression)]. */
473 /* OpenACC clause: vector [( [length:] integer-expression)]. */
476 /* OpenACC clause: num_gangs (integer-expression). */
477 OMP_CLAUSE_NUM_GANGS
,
479 /* OpenACC clause: num_workers (integer-expression). */
480 OMP_CLAUSE_NUM_WORKERS
,
482 /* OpenACC clause: vector_length (integer-expression). */
483 OMP_CLAUSE_VECTOR_LENGTH
,
485 /* OpenACC clause: tile ( size-expr-list ). */
488 /* OpenMP internal-only clause to specify grid dimensions of a gridified
490 OMP_CLAUSE__GRIDDIM_
,
492 /* OpenACC clause: if_present. */
493 OMP_CLAUSE_IF_PRESENT
,
495 /* OpenACC clause: finalize. */
500 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
501 enum tree_node_structure_enum
{
502 #include "treestruct.def"
507 enum omp_clause_schedule_kind
{
508 OMP_CLAUSE_SCHEDULE_STATIC
,
509 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
510 OMP_CLAUSE_SCHEDULE_GUIDED
,
511 OMP_CLAUSE_SCHEDULE_AUTO
,
512 OMP_CLAUSE_SCHEDULE_RUNTIME
,
513 OMP_CLAUSE_SCHEDULE_MASK
= (1 << 3) - 1,
514 OMP_CLAUSE_SCHEDULE_MONOTONIC
= (1 << 3),
515 OMP_CLAUSE_SCHEDULE_NONMONOTONIC
= (1 << 4),
516 OMP_CLAUSE_SCHEDULE_LAST
= 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC
- 1
519 enum omp_clause_default_kind
{
520 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
521 OMP_CLAUSE_DEFAULT_SHARED
,
522 OMP_CLAUSE_DEFAULT_NONE
,
523 OMP_CLAUSE_DEFAULT_PRIVATE
,
524 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
525 OMP_CLAUSE_DEFAULT_PRESENT
,
526 OMP_CLAUSE_DEFAULT_LAST
529 enum omp_clause_defaultmap_kind
{
530 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED
,
531 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR
,
532 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE
,
533 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE
,
534 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER
,
535 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
= 7,
536 OMP_CLAUSE_DEFAULTMAP_ALLOC
= 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
537 OMP_CLAUSE_DEFAULTMAP_TO
= 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
538 OMP_CLAUSE_DEFAULTMAP_FROM
= 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
539 OMP_CLAUSE_DEFAULTMAP_TOFROM
= 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
540 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE
541 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
542 OMP_CLAUSE_DEFAULTMAP_NONE
= 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
543 OMP_CLAUSE_DEFAULTMAP_DEFAULT
544 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
545 OMP_CLAUSE_DEFAULTMAP_MASK
= 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1)
548 enum omp_clause_bind_kind
{
549 OMP_CLAUSE_BIND_TEAMS
,
550 OMP_CLAUSE_BIND_PARALLEL
,
551 OMP_CLAUSE_BIND_THREAD
554 /* memory-order-clause on OpenMP atomic/flush constructs or
555 argument of atomic_default_mem_order clause. */
556 enum omp_memory_order
{
557 OMP_MEMORY_ORDER_UNSPECIFIED
,
558 OMP_MEMORY_ORDER_RELAXED
,
559 OMP_MEMORY_ORDER_ACQUIRE
,
560 OMP_MEMORY_ORDER_RELEASE
,
561 OMP_MEMORY_ORDER_ACQ_REL
,
562 OMP_MEMORY_ORDER_SEQ_CST
565 /* There is a TYPE_QUAL value for each type qualifier. They can be
566 combined by bitwise-or to form the complete set of qualifiers for a
569 TYPE_UNQUALIFIED
= 0x0,
570 TYPE_QUAL_CONST
= 0x1,
571 TYPE_QUAL_VOLATILE
= 0x2,
572 TYPE_QUAL_RESTRICT
= 0x4,
573 TYPE_QUAL_ATOMIC
= 0x8
576 /* Standard named or nameless data types of the C compiler. */
606 TI_INTEGER_MINUS_ONE
,
627 /* The _FloatN and _FloatNx types must be consecutive, and in the
628 same sequence as the corresponding complex types, which must also
629 be consecutive; _FloatN must come before _FloatNx; the order must
630 also be the same as in the floatn_nx_types array and the RID_*
631 values in c-common.h. This is so that iterations over these
632 types work as intended. */
634 TI_FLOATN_TYPE_FIRST
= TI_FLOAT16_TYPE
,
635 TI_FLOATN_NX_TYPE_FIRST
= TI_FLOAT16_TYPE
,
639 TI_FLOATN_TYPE_LAST
= TI_FLOAT128_TYPE
,
640 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
642 TI_FLOATNX_TYPE_FIRST
= TI_FLOAT32X_TYPE
,
645 TI_FLOATNX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
646 TI_FLOATN_NX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
647 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
648 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
649 - TI_FLOATN_NX_TYPE_FIRST \
652 /* Put the complex types after their component types, so that in (sequential)
653 tree streaming we can assert that their component types have already been
654 handled (see tree-streamer.c:record_common_node). */
655 TI_COMPLEX_INTEGER_TYPE
,
656 TI_COMPLEX_FLOAT_TYPE
,
657 TI_COMPLEX_DOUBLE_TYPE
,
658 TI_COMPLEX_LONG_DOUBLE_TYPE
,
660 TI_COMPLEX_FLOAT16_TYPE
,
661 TI_COMPLEX_FLOATN_NX_TYPE_FIRST
= TI_COMPLEX_FLOAT16_TYPE
,
662 TI_COMPLEX_FLOAT32_TYPE
,
663 TI_COMPLEX_FLOAT64_TYPE
,
664 TI_COMPLEX_FLOAT128_TYPE
,
665 TI_COMPLEX_FLOAT32X_TYPE
,
666 TI_COMPLEX_FLOAT64X_TYPE
,
667 TI_COMPLEX_FLOAT128X_TYPE
,
671 TI_LONG_DOUBLE_PTR_TYPE
,
681 TI_VA_LIST_GPR_COUNTER_FIELD
,
682 TI_VA_LIST_FPR_COUNTER_FIELD
,
685 TI_CONST_TM_PTR_TYPE
,
687 TI_CONST_FENV_T_PTR_TYPE
,
688 TI_FEXCEPT_T_PTR_TYPE
,
689 TI_CONST_FEXCEPT_T_PTR_TYPE
,
690 TI_POINTER_SIZED_TYPE
,
695 TI_DFLOAT32_PTR_TYPE
,
696 TI_DFLOAT64_PTR_TYPE
,
697 TI_DFLOAT128_PTR_TYPE
,
710 TI_SAT_ULLFRACT_TYPE
,
726 TI_SAT_ULLACCUM_TYPE
,
772 TI_OPTIMIZATION_DEFAULT
,
773 TI_OPTIMIZATION_CURRENT
,
774 TI_TARGET_OPTION_DEFAULT
,
775 TI_TARGET_OPTION_CURRENT
,
776 TI_CURRENT_TARGET_PRAGMA
,
777 TI_CURRENT_OPTIMIZE_PRAGMA
,
785 /* An enumeration of the standard C integer types. These must be
786 ordered so that shorter types appear before longer ones, and so
787 that signed types appear before unsigned ones, for the correct
788 functioning of interpret_integer() in c-lex.c. */
789 enum integer_type_kind
{
800 itk_unsigned_long_long
,
814 /* A pointer-to-function member type looks like:
821 If __pfn is NULL, it is a NULL pointer-to-member-function.
823 (Because the vtable is always the first thing in the object, we
824 don't need its offset.) If the function is virtual, then PFN is
825 one plus twice the index into the vtable; otherwise, it is just a
826 pointer to the function.
828 Unfortunately, using the lowest bit of PFN doesn't work in
829 architectures that don't impose alignment requirements on function
830 addresses, or that use the lowest bit to tell one ISA from another,
831 for example. For such architectures, we use the lowest bit of
832 DELTA instead of the lowest bit of the PFN, and DELTA will be
834 enum ptrmemfunc_vbit_where_t
{
835 ptrmemfunc_vbit_in_pfn
,
836 ptrmemfunc_vbit_in_delta
839 /* Flags that may be passed in the third argument of decl_attributes, and
840 to handler functions for attributes. */
841 enum attribute_flags
{
842 /* The type passed in is the type of a DECL, and any attributes that
843 should be passed in again to be applied to the DECL rather than the
844 type should be returned. */
845 ATTR_FLAG_DECL_NEXT
= 1,
846 /* The type passed in is a function return type, and any attributes that
847 should be passed in again to be applied to the function type rather
848 than the return type should be returned. */
849 ATTR_FLAG_FUNCTION_NEXT
= 2,
850 /* The type passed in is an array element type, and any attributes that
851 should be passed in again to be applied to the array type rather
852 than the element type should be returned. */
853 ATTR_FLAG_ARRAY_NEXT
= 4,
854 /* The type passed in is a structure, union or enumeration type being
855 created, and should be modified in place. */
856 ATTR_FLAG_TYPE_IN_PLACE
= 8,
857 /* The attributes are being applied by default to a library function whose
858 name indicates known behavior, and should be silently ignored if they
859 are not in fact compatible with the function type. */
860 ATTR_FLAG_BUILT_IN
= 16,
861 /* A given attribute has been parsed as a C++-11 attribute. */
865 /* Types used to represent sizes. */
866 enum size_type_kind
{
867 stk_sizetype
, /* Normal representation of sizes in bytes. */
868 stk_ssizetype
, /* Signed representation of sizes in bytes. */
869 stk_bitsizetype
, /* Normal representation of sizes in bits. */
870 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
874 enum operand_equal_flag
{
877 OEP_MATCH_SIDE_EFFECTS
= 4,
879 /* Internal within operand_equal_p: */
880 OEP_NO_HASH_CHECK
= 16,
881 /* Internal within inchash::add_expr: */
883 /* Makes operand_equal_p handle more expressions: */
884 OEP_LEXICOGRAPHIC
= 64
887 /* Enum and arrays used for tree allocation stats.
888 Keep in sync with tree.c:tree_node_kind_names. */
889 enum tree_node_kind
{
909 enum annot_expr_kind
{
910 annot_expr_ivdep_kind
,
911 annot_expr_unroll_kind
,
912 annot_expr_no_vector_kind
,
913 annot_expr_vector_kind
,
914 annot_expr_parallel_kind
,
918 /*---------------------------------------------------------------------------
920 ---------------------------------------------------------------------------*/
921 /* When processing aliases at the symbol table level, we need the
922 declaration of target. For this reason we need to queue aliases and
923 process them after all declarations has been produced. */
924 struct GTY(()) alias_pair
{
929 /* An initialization priority. */
930 typedef unsigned short priority_type
;
932 /* The type of a callback function for walking over tree structure. */
933 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
935 /* The type of a callback function that represents a custom walk_tree. */
936 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
937 void *, hash_set
<tree
> *);
940 /*---------------------------------------------------------------------------
942 ---------------------------------------------------------------------------*/
943 /* A tree node can represent a data type, a variable, an expression
944 or a statement. Each node has a TREE_CODE which says what kind of
945 thing it represents. Some common codes are:
946 INTEGER_TYPE -- represents a type of integers.
947 ARRAY_TYPE -- represents a type of pointer.
948 VAR_DECL -- represents a declared variable.
949 INTEGER_CST -- represents a constant integer value.
950 PLUS_EXPR -- represents a sum (an expression).
952 As for the contents of a tree node: there are some fields
953 that all nodes share. Each TREE_CODE has various special-purpose
954 fields as well. The fields of a node are never accessed directly,
955 always through accessor macros. */
957 /* Every kind of tree node starts with this structure,
958 so all nodes have these fields.
960 See the accessor macros, defined below, for documentation of the
961 fields, and the table below which connects the fields and the
964 struct GTY(()) tree_base
{
965 ENUM_BITFIELD(tree_code
) code
: 16;
967 unsigned side_effects_flag
: 1;
968 unsigned constant_flag
: 1;
969 unsigned addressable_flag
: 1;
970 unsigned volatile_flag
: 1;
971 unsigned readonly_flag
: 1;
972 unsigned asm_written_flag
: 1;
973 unsigned nowarning_flag
: 1;
974 unsigned visited
: 1;
976 unsigned used_flag
: 1;
977 unsigned nothrow_flag
: 1;
978 unsigned static_flag
: 1;
979 unsigned public_flag
: 1;
980 unsigned private_flag
: 1;
981 unsigned protected_flag
: 1;
982 unsigned deprecated_flag
: 1;
983 unsigned default_def_flag
: 1;
986 /* The bits in the following structure should only be used with
987 accessor macros that constrain inputs with tree checking. */
989 unsigned lang_flag_0
: 1;
990 unsigned lang_flag_1
: 1;
991 unsigned lang_flag_2
: 1;
992 unsigned lang_flag_3
: 1;
993 unsigned lang_flag_4
: 1;
994 unsigned lang_flag_5
: 1;
995 unsigned lang_flag_6
: 1;
996 unsigned saturating_flag
: 1;
998 unsigned unsigned_flag
: 1;
999 unsigned packed_flag
: 1;
1000 unsigned user_align
: 1;
1001 unsigned nameless_flag
: 1;
1002 unsigned atomic_flag
: 1;
1003 unsigned spare0
: 3;
1005 unsigned spare1
: 8;
1007 /* This field is only used with TREE_TYPE nodes; the only reason it is
1008 present in tree_base instead of tree_type is to save space. The size
1009 of the field must be large enough to hold addr_space_t values. */
1010 unsigned address_space
: 8;
1013 /* The following fields are present in tree_base to save space. The
1014 nodes using them do not require any of the flags above and so can
1015 make better use of the 4-byte sized word. */
1017 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
1019 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1020 its native precision. */
1021 unsigned char unextended
;
1023 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
1024 wider precisions based on its TYPE_SIGN. */
1025 unsigned char extended
;
1027 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1028 offset_int precision, with smaller integers being extended
1029 according to their TYPE_SIGN. This is equal to one of the two
1030 fields above but is cached for speed. */
1031 unsigned char offset
;
1034 /* VEC length. This field is only used with TREE_VEC. */
1037 /* This field is only used with VECTOR_CST. */
1039 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
1040 unsigned int log2_npatterns
: 8;
1042 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
1043 unsigned int nelts_per_pattern
: 8;
1045 /* For future expansion. */
1046 unsigned int unused
: 16;
1049 /* SSA version number. This field is only used with SSA_NAME. */
1050 unsigned int version
;
1052 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
1053 unsigned int chrec_var
;
1055 /* Internal function code. */
1056 enum internal_fn ifn
;
1058 /* OMP_ATOMIC* memory order. */
1059 enum omp_memory_order omp_atomic_memory_order
;
1061 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
1062 expression trees and specify known data non-dependences. For
1063 two memory references in a function they are known to not
1064 alias if dependence_info.clique are equal and dependence_info.base
1065 are distinct. Clique number zero means there is no information,
1066 clique number one is populated from function global information
1067 and thus needs no remapping on transforms like loop unrolling. */
1069 unsigned short clique
;
1070 unsigned short base
;
1072 } GTY((skip(""))) u
;
1075 /* The following table lists the uses of each of the above flags and
1076 for which types of nodes they are defined.
1081 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1084 CONSTRUCTOR, IDENTIFIER_NODE
1087 CALL_EXPR_TAILCALL in
1093 PREDICT_EXPR_OUTCOME in
1099 VAR_DECL, FUNCTION_DECL
1102 TREE_NO_TRAMPOLINE in
1108 TREE_SYMBOL_REFERENCED in
1112 TARGET_EXPR, WITH_CLEANUP_EXPR
1114 TRY_CATCH_IS_CLEANUP in
1120 TYPE_REF_CAN_ALIAS_ALL in
1121 POINTER_TYPE, REFERENCE_TYPE
1129 TRANSACTION_EXPR_OUTER in
1132 SSA_NAME_ANTI_RANGE_P in
1141 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1144 VAR_DECL, FUNCTION_DECL
1147 CONSTRUCTOR_NO_CLEARING in
1153 CALL_EXPR_VA_ARG_PACK in
1156 TYPE_CACHED_VALUES_P in
1159 SAVE_EXPR_RESOLVED_P in
1162 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1163 OMP_CLAUSE_LASTPRIVATE
1165 OMP_CLAUSE_PRIVATE_DEBUG in
1168 OMP_CLAUSE_LINEAR_NO_COPYIN in
1171 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1174 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1175 OMP_CLAUSE_{,TASK_,IN_}REDUCTION
1177 TRANSACTION_EXPR_RELAXED in
1180 FALLTHROUGH_LABEL_P in
1183 SSA_NAME_IS_VIRTUAL_OPERAND in
1186 EXPR_LOCATION_WRAPPER_P in
1187 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1194 CALL_EXPR_RETURN_SLOT_OPT in
1200 OMP_PARALLEL_COMBINED in
1203 OMP_CLAUSE_PRIVATE_OUTER_REF in
1206 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1209 TYPE_REF_IS_RVALUE in
1221 CALL_FROM_THUNK_P and
1222 CALL_ALLOCA_FOR_VAR_P in
1225 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1233 TREE_SIDE_EFFECTS in
1243 TREE_THIS_VOLATILE in
1266 TYPE_SIZES_GIMPLIFIED in
1280 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1281 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1284 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1301 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1303 SSA_NAME_IN_FREE_LIST in
1315 IDENTIFIER_TRANSPARENT_ALIAS in
1318 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1324 all trees (used liberally by many passes)
1328 TYPE_REVERSE_STORAGE_ORDER in
1329 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1334 VAR_DECL_IS_VIRTUAL_OPERAND in
1349 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1351 TYPE_VECTOR_OPAQUE in
1354 SSA_NAME_IS_DEFAULT_DEF in
1357 DECL_NONLOCAL_FRAME in
1360 REF_REVERSE_STORAGE_ORDER in
1361 BIT_FIELD_REF, MEM_REF
1363 FUNC_ADDR_BY_DESCRIPTOR in
1366 CALL_EXPR_BY_DESCRIPTOR in
1370 struct GTY(()) tree_typed
{
1371 struct tree_base base
;
1375 struct GTY(()) tree_common
{
1376 struct tree_typed typed
;
1380 struct GTY(()) tree_int_cst
{
1381 struct tree_typed typed
;
1382 HOST_WIDE_INT val
[1];
1386 struct GTY(()) tree_real_cst
{
1387 struct tree_typed typed
;
1388 struct real_value
* real_cst_ptr
;
1391 struct GTY(()) tree_fixed_cst
{
1392 struct tree_typed typed
;
1393 struct fixed_value
* fixed_cst_ptr
;
1396 struct GTY(()) tree_string
{
1397 struct tree_typed typed
;
1402 struct GTY(()) tree_complex
{
1403 struct tree_typed typed
;
1408 struct GTY(()) tree_vector
{
1409 struct tree_typed typed
;
1410 tree
GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts
[1];
1413 struct GTY(()) tree_poly_int_cst
{
1414 struct tree_typed typed
;
1415 tree coeffs
[NUM_POLY_INT_COEFFS
];
1418 struct GTY(()) tree_identifier
{
1419 struct tree_common common
;
1420 struct ht_identifier id
;
1423 struct GTY(()) tree_list
{
1424 struct tree_common common
;
1429 struct GTY(()) tree_vec
{
1430 struct tree_common common
;
1431 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1434 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1435 element. INDEX can optionally design the position of VALUE: in arrays,
1436 it is the index where VALUE has to be placed; in structures, it is the
1437 FIELD_DECL of the member. */
1438 struct GTY(()) constructor_elt
{
1443 struct GTY(()) tree_constructor
{
1444 struct tree_typed typed
;
1445 vec
<constructor_elt
, va_gc
> *elts
;
1448 enum omp_clause_depend_kind
1450 OMP_CLAUSE_DEPEND_IN
,
1451 OMP_CLAUSE_DEPEND_OUT
,
1452 OMP_CLAUSE_DEPEND_INOUT
,
1453 OMP_CLAUSE_DEPEND_MUTEXINOUTSET
,
1454 OMP_CLAUSE_DEPEND_SOURCE
,
1455 OMP_CLAUSE_DEPEND_SINK
,
1456 OMP_CLAUSE_DEPEND_DEPOBJ
,
1457 OMP_CLAUSE_DEPEND_LAST
1460 enum omp_clause_proc_bind_kind
1462 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1463 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1464 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1465 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1466 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1467 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1468 OMP_CLAUSE_PROC_BIND_LAST
1471 enum omp_clause_linear_kind
1473 OMP_CLAUSE_LINEAR_DEFAULT
,
1474 OMP_CLAUSE_LINEAR_REF
,
1475 OMP_CLAUSE_LINEAR_VAL
,
1476 OMP_CLAUSE_LINEAR_UVAL
1479 struct GTY(()) tree_exp
{
1480 struct tree_typed typed
;
1482 tree
GTY ((special ("tree_exp"),
1483 desc ("TREE_CODE ((tree) &%0)")))
1487 /* Immediate use linking structure. This structure is used for maintaining
1488 a doubly linked list of uses of an SSA_NAME. */
1489 struct GTY(()) ssa_use_operand_t
{
1490 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1491 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1492 /* Immediate uses for a given SSA name are maintained as a cyclic
1493 list. To recognize the root of this list, the location field
1494 needs to point to the original SSA name. Since statements and
1495 SSA names are of different data types, we need this union. See
1496 the explanation in struct imm_use_iterator. */
1497 union { gimple
*stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1498 tree
*GTY((skip(""))) use
;
1501 struct GTY(()) tree_ssa_name
{
1502 struct tree_typed typed
;
1504 /* _DECL wrapped by this SSA name. */
1507 /* Statement that defines this SSA name. */
1510 /* Value range information. */
1511 union ssa_name_info_type
{
1512 /* Pointer attributes used for alias analysis. */
1513 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1514 /* Value range attributes used for zero/sign extension elimination. */
1515 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1516 } GTY ((desc ("%1.typed.type ?" \
1517 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1519 /* Immediate uses list for this SSA_NAME. */
1520 struct ssa_use_operand_t imm_uses
;
1523 struct GTY(()) phi_arg_d
{
1524 /* imm_use MUST be the first element in struct because we do some
1525 pointer arithmetic with it. See phi_arg_index_from_use. */
1526 struct ssa_use_operand_t imm_use
;
1531 struct GTY(()) tree_omp_clause
{
1532 struct tree_common common
;
1534 enum omp_clause_code code
;
1535 union omp_clause_subcode
{
1536 enum omp_clause_default_kind default_kind
;
1537 enum omp_clause_schedule_kind schedule_kind
;
1538 enum omp_clause_depend_kind depend_kind
;
1539 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1540 unsigned int map_kind
;
1541 enum omp_clause_proc_bind_kind proc_bind_kind
;
1542 enum tree_code reduction_code
;
1543 enum omp_clause_linear_kind linear_kind
;
1544 enum tree_code if_modifier
;
1545 enum omp_clause_defaultmap_kind defaultmap_kind
;
1546 enum omp_clause_bind_kind bind_kind
;
1547 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1548 construct describes. */
1549 unsigned int dimension
;
1550 } GTY ((skip
)) subcode
;
1552 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1554 gimple_seq gimple_reduction_init
;
1555 gimple_seq gimple_reduction_merge
;
1557 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1561 struct GTY(()) tree_block
{
1562 struct tree_base base
;
1568 location_t end_locus
;
1571 vec
<tree
, va_gc
> *nonlocalized_vars
;
1575 tree abstract_origin
;
1576 tree fragment_origin
;
1577 tree fragment_chain
;
1579 /* Pointer to the DWARF lexical block. */
1580 struct die_struct
*die
;
1583 struct GTY(()) tree_type_common
{
1584 struct tree_common common
;
1590 unsigned int precision
: 10;
1591 unsigned no_force_blk_flag
: 1;
1592 unsigned needs_constructing_flag
: 1;
1593 unsigned transparent_aggr_flag
: 1;
1594 unsigned restrict_flag
: 1;
1595 unsigned contains_placeholder_bits
: 2;
1597 ENUM_BITFIELD(machine_mode
) mode
: 8;
1599 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE.
1600 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */
1601 unsigned string_flag
: 1;
1602 unsigned lang_flag_0
: 1;
1603 unsigned lang_flag_1
: 1;
1604 unsigned lang_flag_2
: 1;
1605 unsigned lang_flag_3
: 1;
1606 unsigned lang_flag_4
: 1;
1607 unsigned lang_flag_5
: 1;
1608 unsigned lang_flag_6
: 1;
1609 unsigned lang_flag_7
: 1;
1611 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1612 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1613 the latter being usually the larger. For ELF it is 8<<28,
1614 so we need to store the value 32 (not 31, as we need the zero
1615 as well), hence six bits. */
1617 unsigned warn_if_not_align
: 6;
1618 unsigned typeless_storage
: 1;
1619 unsigned empty_flag
: 1;
1620 unsigned spare
: 17;
1622 alias_set_type alias_set
;
1625 union tree_type_symtab
{
1626 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1627 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1628 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1636 struct GTY(()) tree_type_with_lang_specific
{
1637 struct tree_type_common common
;
1638 /* Points to a structure whose details depend on the language in use. */
1639 struct lang_type
*lang_specific
;
1642 struct GTY(()) tree_type_non_common
{
1643 struct tree_type_with_lang_specific with_lang_specific
;
1650 struct GTY (()) tree_binfo
{
1651 struct tree_common common
;
1657 vec
<tree
, va_gc
> *base_accesses
;
1663 vec
<tree
, va_gc
> base_binfos
;
1666 struct GTY(()) tree_decl_minimal
{
1667 struct tree_common common
;
1674 struct GTY(()) tree_decl_common
{
1675 struct tree_decl_minimal common
;
1678 ENUM_BITFIELD(machine_mode
) mode
: 8;
1680 unsigned nonlocal_flag
: 1;
1681 unsigned virtual_flag
: 1;
1682 unsigned ignored_flag
: 1;
1683 unsigned abstract_flag
: 1;
1684 unsigned artificial_flag
: 1;
1685 unsigned preserve_flag
: 1;
1686 unsigned debug_expr_is_from
: 1;
1688 unsigned lang_flag_0
: 1;
1689 unsigned lang_flag_1
: 1;
1690 unsigned lang_flag_2
: 1;
1691 unsigned lang_flag_3
: 1;
1692 unsigned lang_flag_4
: 1;
1693 unsigned lang_flag_5
: 1;
1694 unsigned lang_flag_6
: 1;
1695 unsigned lang_flag_7
: 1;
1696 unsigned lang_flag_8
: 1;
1698 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1699 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */
1700 unsigned decl_flag_0
: 1;
1701 /* In FIELD_DECL, this is DECL_BIT_FIELD
1702 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1703 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1704 unsigned decl_flag_1
: 1;
1705 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1706 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1707 DECL_HAS_VALUE_EXPR_P. */
1708 unsigned decl_flag_2
: 1;
1709 /* In FIELD_DECL, this is DECL_PADDING_P. */
1710 unsigned decl_flag_3
: 1;
1711 /* Logically, these two would go in a theoretical base shared by var and
1713 unsigned gimple_reg_flag
: 1;
1714 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1715 unsigned decl_by_reference_flag
: 1;
1716 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1717 unsigned decl_read_flag
: 1;
1718 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1719 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */
1720 unsigned decl_nonshareable_flag
: 1;
1722 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1723 unsigned int off_align
: 6;
1725 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1726 unsigned int align
: 6;
1728 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1729 TYPE_WARN_IF_NOT_ALIGN. */
1730 unsigned int warn_if_not_align
: 6;
1732 /* 14 bits unused. */
1734 /* UID for points-to sets, stable over copying from inlining. */
1735 unsigned int pt_uid
;
1740 tree abstract_origin
;
1742 /* Points to a structure whose details depend on the language in use. */
1743 struct lang_decl
*lang_specific
;
1746 struct GTY(()) tree_decl_with_rtl
{
1747 struct tree_decl_common common
;
1751 struct GTY(()) tree_field_decl
{
1752 struct tree_decl_common common
;
1755 tree bit_field_type
;
1761 struct GTY(()) tree_label_decl
{
1762 struct tree_decl_with_rtl common
;
1764 int eh_landing_pad_nr
;
1767 struct GTY(()) tree_result_decl
{
1768 struct tree_decl_with_rtl common
;
1771 struct GTY(()) tree_const_decl
{
1772 struct tree_decl_common common
;
1775 struct GTY(()) tree_parm_decl
{
1776 struct tree_decl_with_rtl common
;
1780 struct GTY(()) tree_decl_with_vis
{
1781 struct tree_decl_with_rtl common
;
1782 tree assembler_name
;
1783 struct symtab_node
*symtab_node
;
1785 /* Belong to VAR_DECL exclusively. */
1786 unsigned defer_output
: 1;
1787 unsigned hard_register
: 1;
1788 unsigned common_flag
: 1;
1789 unsigned in_text_section
: 1;
1790 unsigned in_constant_pool
: 1;
1791 unsigned dllimport_flag
: 1;
1792 /* Don't belong to VAR_DECL exclusively. */
1793 unsigned weak_flag
: 1;
1795 unsigned seen_in_bind_expr
: 1;
1796 unsigned comdat_flag
: 1;
1797 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1798 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1799 unsigned visibility_specified
: 1;
1801 /* Belong to FUNCTION_DECL exclusively. */
1802 unsigned init_priority_p
: 1;
1803 /* Used by C++ only. Might become a generic decl flag. */
1804 unsigned shadowed_for_var_p
: 1;
1805 /* Belong to FUNCTION_DECL exclusively. */
1806 unsigned cxx_constructor
: 1;
1807 /* Belong to FUNCTION_DECL exclusively. */
1808 unsigned cxx_destructor
: 1;
1809 /* Belong to FUNCTION_DECL exclusively. */
1811 /* Belong to FUNCTION_DECL exclusively. */
1812 unsigned regdecl_flag
: 1;
1813 /* 14 unused bits. */
1816 struct GTY(()) tree_var_decl
{
1817 struct tree_decl_with_vis common
;
1820 struct GTY(()) tree_decl_non_common
{
1821 struct tree_decl_with_vis common
;
1822 /* Almost all FE's use this. */
1826 /* Classify a special function declaration type. */
1828 enum function_decl_type
1838 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1839 arguments/result/saved_tree fields by front ends. It was either inherit
1840 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1841 which seemed a bit strange. */
1843 struct GTY(()) tree_function_decl
{
1844 struct tree_decl_non_common common
;
1848 /* Arguments of the function. */
1850 /* The personality function. Used for stack unwinding. */
1853 /* Function specific options that are used by this function. */
1854 tree function_specific_target
; /* target options */
1855 tree function_specific_optimization
; /* optimization options */
1857 /* Generic function body. */
1859 /* Index within a virtual table. */
1862 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1863 DECL_FUNCTION_CODE. Otherwise unused. */
1864 enum built_in_function function_code
;
1866 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1867 unsigned static_ctor_flag
: 1;
1868 unsigned static_dtor_flag
: 1;
1869 unsigned uninlinable
: 1;
1870 unsigned possibly_inlined
: 1;
1871 unsigned novops_flag
: 1;
1872 unsigned returns_twice_flag
: 1;
1874 unsigned malloc_flag
: 1;
1875 unsigned declared_inline_flag
: 1;
1876 unsigned no_inline_warning_flag
: 1;
1877 unsigned no_instrument_function_entry_exit
: 1;
1878 unsigned no_limit_stack
: 1;
1879 unsigned disregard_inline_limits
: 1;
1880 unsigned pure_flag
: 1;
1881 unsigned looping_const_or_pure_flag
: 1;
1883 /* Align the bitfield to boundary of a byte. */
1884 ENUM_BITFIELD(function_decl_type
) decl_type
: 2;
1885 unsigned has_debug_args_flag
: 1;
1886 unsigned versioned_function
: 1;
1888 /* 12 bits left for future expansion. */
1891 struct GTY(()) tree_translation_unit_decl
{
1892 struct tree_decl_common common
;
1893 /* Source language of this translation unit. Used for DWARF output. */
1894 const char * GTY((skip(""))) language
;
1895 /* TODO: Non-optimization used to build this translation unit. */
1896 /* TODO: Root of a partial DWARF tree for global types and decls. */
1899 struct GTY(()) tree_type_decl
{
1900 struct tree_decl_non_common common
;
1904 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1906 struct tree_statement_list_node
*prev
;
1907 struct tree_statement_list_node
*next
;
1911 struct GTY(()) tree_statement_list
1913 struct tree_typed typed
;
1914 struct tree_statement_list_node
*head
;
1915 struct tree_statement_list_node
*tail
;
1919 /* Optimization options used by a function. */
1921 struct GTY(()) tree_optimization_option
{
1922 struct tree_base base
;
1924 /* The optimization options used by the user. */
1925 struct cl_optimization
*opts
;
1927 /* Target optabs for this set of optimization options. This is of
1928 type `struct target_optabs *'. */
1929 void *GTY ((atomic
)) optabs
;
1931 /* The value of this_target_optabs against which the optabs above were
1933 struct target_optabs
*GTY ((skip
)) base_optabs
;
1936 /* Forward declaration, defined in target-globals.h. */
1938 class GTY(()) target_globals
;
1940 /* Target options used by a function. */
1942 struct GTY(()) tree_target_option
{
1943 struct tree_base base
;
1945 /* Target globals for the corresponding target option. */
1946 class target_globals
*globals
;
1948 /* The optimization options used by the user. */
1949 struct cl_target_option
*opts
;
1952 /* Define the overall contents of a tree node.
1953 It may be any of the structures declared above
1954 for various types of node. */
1955 union GTY ((ptr_alias (union lang_tree_node
),
1956 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1957 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1958 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1959 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1960 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1961 struct tree_poly_int_cst
GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst
;
1962 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1963 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1964 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1965 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1966 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1967 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1968 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1969 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1970 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1971 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1973 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1974 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1975 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1976 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1977 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1978 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1979 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1980 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1981 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1982 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1983 translation_unit_decl
;
1984 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1985 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1986 type_with_lang_specific
;
1987 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1989 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1990 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1991 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1992 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1993 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1994 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1995 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1996 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1997 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1998 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1999 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
2002 /* Structure describing an attribute and a function to handle it. */
2003 struct attribute_spec
{
2004 /* The name of the attribute (without any leading or trailing __),
2005 or NULL to mark the end of a table of attributes. */
2007 /* The minimum length of the list of arguments of the attribute. */
2009 /* The maximum length of the list of arguments of the attribute
2010 (-1 for no maximum). */
2012 /* Whether this attribute requires a DECL. If it does, it will be passed
2013 from types of DECLs, function return types and array element types to
2014 the DECLs, function types and array types respectively; but when
2015 applied to a type in any other circumstances, it will be ignored with
2016 a warning. (If greater control is desired for a given attribute,
2017 this should be false, and the flags argument to the handler may be
2018 used to gain greater control in that case.) */
2020 /* Whether this attribute requires a type. If it does, it will be passed
2021 from a DECL to the type of that DECL. */
2023 /* Whether this attribute requires a function (or method) type. If it does,
2024 it will be passed from a function pointer type to the target type,
2025 and from a function return type (which is not itself a function
2026 pointer type) to the function type. */
2027 bool function_type_required
;
2028 /* Specifies if attribute affects type's identity. */
2029 bool affects_type_identity
;
2030 /* Function to handle this attribute. NODE points to the node to which
2031 the attribute is to be applied. If a DECL, it should be modified in
2032 place; if a TYPE, a copy should be created. NAME is the canonicalized
2033 name of the attribute i.e. without any leading or trailing underscores.
2034 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
2035 further information about the context of the attribute. Afterwards, the
2036 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
2037 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
2038 error, as well as in any other cases when the attributes should not be
2039 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
2040 applied to another type or DECL later may be returned;
2041 otherwise the return value should be NULL_TREE. This pointer may be
2042 NULL if no special handling is required beyond the checks implied
2043 by the rest of this structure. */
2044 tree (*handler
) (tree
*node
, tree name
, tree args
,
2045 int flags
, bool *no_add_attrs
);
2047 /* Specifies the name of an attribute that's mutually exclusive with
2048 this one, and whether the relationship applies to the function,
2049 variable, or type form of the attribute. */
2057 /* An array of attribute exclusions describing names of other attributes
2058 that this attribute is mutually exclusive with. */
2059 const exclusions
*exclude
;
2062 /* These functions allow a front-end to perform a manual layout of a
2063 RECORD_TYPE. (For instance, if the placement of subsequent fields
2064 depends on the placement of fields so far.) Begin by calling
2065 start_record_layout. Then, call place_field for each of the
2066 fields. Then, call finish_record_layout. See layout_type for the
2067 default way in which these functions are used. */
2068 typedef struct record_layout_info_s
{
2069 /* The RECORD_TYPE that we are laying out. */
2071 /* The offset into the record so far, in bytes, not including bits in
2074 /* The last known alignment of SIZE. */
2075 unsigned int offset_align
;
2076 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
2078 /* The alignment of the record so far, in bits. */
2079 unsigned int record_align
;
2080 /* The alignment of the record so far, ignoring #pragma pack and
2081 __attribute__ ((packed)), in bits. */
2082 unsigned int unpacked_align
;
2083 /* The previous field laid out. */
2085 /* The static variables (i.e., class variables, as opposed to
2086 instance variables) encountered in T. */
2087 vec
<tree
, va_gc
> *pending_statics
;
2088 /* Bits remaining in the current alignment group */
2089 int remaining_in_alignment
;
2090 /* True if we've seen a packed field that didn't have normal
2091 alignment anyway. */
2092 int packed_maybe_necessary
;
2093 } *record_layout_info
;
2095 /* Iterator for going through the function arguments. */
2096 struct function_args_iterator
{
2097 tree next
; /* TREE_LIST pointing to the next argument */
2100 /* Structures to map from a tree to another tree. */
2101 struct GTY(()) tree_map_base
{
2105 /* Map from a tree to another tree. */
2107 struct GTY((for_user
)) tree_map
{
2108 struct tree_map_base base
;
2113 /* Map from a decl tree to another tree. */
2114 struct GTY((for_user
)) tree_decl_map
{
2115 struct tree_map_base base
;
2119 /* Map from a tree to an int. */
2120 struct GTY((for_user
)) tree_int_map
{
2121 struct tree_map_base base
;
2125 /* Map from a decl tree to a tree vector. */
2126 struct GTY((for_user
)) tree_vec_map
{
2127 struct tree_map_base base
;
2128 vec
<tree
, va_gc
> *to
;
2131 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2132 have to go towards the end of tree.h so that union tree_node is fully
2133 defined by this point. */
2135 /* Structure containing iterator state. */
2136 struct call_expr_arg_iterator
{
2137 tree t
; /* the call_expr */
2138 int n
; /* argument count */
2139 int i
; /* next argument index */
2142 struct const_call_expr_arg_iterator
{
2143 const_tree t
; /* the call_expr */
2144 int n
; /* argument count */
2145 int i
; /* next argument index */
2148 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2149 function, and flags. */
2150 struct GTY(()) builtin_info_type
{
2152 /* Whether the user can use <xxx> instead of explicitly using calls
2153 to __builtin_<xxx>. */
2154 unsigned implicit_p
: 1;
2155 /* Whether the user has provided a declaration of <xxx>. */
2156 unsigned declared_p
: 1;
2159 /* Information about a _FloatN or _FloatNx type that may be
2161 struct floatn_type_info
{
2162 /* The number N in the type name. */
2164 /* Whether it is an extended type _FloatNx (true) or an interchange
2170 /*---------------------------------------------------------------------------
2172 ---------------------------------------------------------------------------*/
2173 /* Matrix describing the structures contained in a given tree code. */
2174 extern bool tree_contains_struct
[MAX_TREE_CODES
][64];
2176 /* Class of tree given its code. */
2177 extern const enum tree_code_class tree_code_type
[];
2179 /* Each tree code class has an associated string representation.
2180 These must correspond to the tree_code_class entries. */
2181 extern const char *const tree_code_class_strings
[];
2183 /* Number of argument-words in each kind of tree-node. */
2184 extern const unsigned char tree_code_length
[];
2186 /* Vector of all alias pairs for global symbols. */
2187 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
2189 /* Names of all the built_in classes. */
2190 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
2192 /* Names of all the built_in functions. */
2193 extern const char * built_in_names
[(int) END_BUILTINS
];
2195 /* Number of operands and names for each OMP_CLAUSE node. */
2196 extern unsigned const char omp_clause_num_ops
[];
2197 extern const char * const omp_clause_code_name
[];
2199 /* A vector of all translation-units. */
2200 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
2202 /* Vector of standard trees used by the C compiler. */
2203 extern GTY(()) tree global_trees
[TI_MAX
];
2205 /* The standard C integer types. Use integer_type_kind to index into
2207 extern GTY(()) tree integer_types
[itk_none
];
2209 /* Types used to represent sizes. */
2210 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
2212 /* Arrays for keeping track of tree node statistics. */
2213 extern uint64_t tree_node_counts
[];
2214 extern uint64_t tree_node_sizes
[];
2216 /* True if we are in gimple form and the actions of the folders need to
2217 be restricted. False if we are not in gimple form and folding is not
2218 restricted to creating gimple expressions. */
2219 extern bool in_gimple_form
;
2221 /* Functional interface to the builtin functions. */
2222 extern GTY(()) builtin_info_type builtin_info
[(int)END_BUILTINS
];
2224 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2225 extern unsigned int maximum_field_alignment
;
2227 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2228 extern GTY(()) tree current_function_decl
;
2230 /* Nonzero means a FUNC_BEGIN label was emitted. */
2231 extern GTY(()) const char * current_function_func_begin_label
;
2233 /* Information about the _FloatN and _FloatNx types. */
2234 extern const floatn_type_info floatn_nx_types
[NUM_FLOATN_NX_TYPES
];
2236 #endif // GCC_TREE_CORE_H