1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2021 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 /* Nonzero if the argument itself does not escape but memory
114 referenced by it can escape. */
115 #define EAF_NODIRECTESCAPE (1 << 4)
117 /* Nonzero if the argument does not escape to return value. */
118 #define EAF_NOT_RETURNED (1 << 5)
120 /* Nonzero if the argument is not read. */
121 #define EAF_NOREAD (1 << 6)
123 /* Call return flags. */
124 /* Mask for the argument number that is returned. Lower two bits of
125 the return flags, encodes argument slots zero to three. */
126 #define ERF_RETURN_ARG_MASK (3)
128 /* Nonzero if the return value is equal to the argument number
129 flags & ERF_RETURN_ARG_MASK. */
130 #define ERF_RETURNS_ARG (1 << 2)
132 /* Nonzero if the return value does not alias with anything. Functions
133 with the malloc attribute have this set on their return value. */
134 #define ERF_NOALIAS (1 << 3)
137 /*---------------------------------------------------------------------------
139 ---------------------------------------------------------------------------*/
140 /* Codes of tree nodes. */
141 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
142 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
145 #include "all-tree.def"
150 #undef END_OF_BASE_TREE_CODES
152 /* Number of language-independent tree codes. */
153 #define NUM_TREE_CODES \
154 ((int) LAST_AND_UNUSED_TREE_CODE)
156 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
157 (tree_contains_struct[(CODE)][(STRUCT)])
160 /* Classify which part of the compiler has defined a given builtin function.
161 Note that we assume below that this is no more than two bits. */
162 enum built_in_class
{
169 /* Last marker used for LTO stremaing of built_in_class. We cannot add it
170 to the enum since we need the enumb to fit in 2 bits. */
171 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
173 /* Codes that identify the various built in functions
174 so that expand_call can identify them quickly. */
175 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
176 enum built_in_function
{
177 #include "builtins.def"
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"
214 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
215 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
216 #include "internal-fn.def"
221 /* Tree code classes. Each tree_code has an associated code class
222 represented by a TREE_CODE_CLASS. */
223 enum tree_code_class
{
224 tcc_exceptional
, /* An exceptional code (fits no category). */
225 tcc_constant
, /* A constant. */
226 /* Order of tcc_type and tcc_declaration is important. */
227 tcc_type
, /* A type object code. */
228 tcc_declaration
, /* A declaration (also serving as variable refs). */
229 tcc_reference
, /* A reference to storage. */
230 tcc_comparison
, /* A comparison expression. */
231 tcc_unary
, /* A unary arithmetic expression. */
232 tcc_binary
, /* A binary arithmetic expression. */
233 tcc_statement
, /* A statement expression, which have side effects
234 but usually no interesting value. */
235 tcc_vl_exp
, /* A function call or other expression with a
236 variable-length operand vector. */
237 tcc_expression
/* Any other expression. */
240 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
241 the tables omp_clause_num_ops and omp_clause_code_name. */
242 enum omp_clause_code
{
243 /* Clause zero is special-cased inside the parser
244 (c_parser_omp_variable_list). */
245 OMP_CLAUSE_ERROR
= 0,
247 /* OpenACC/OpenMP clause: private (variable_list). */
250 /* OpenMP clause: shared (variable_list). */
253 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
254 OMP_CLAUSE_FIRSTPRIVATE
,
256 /* OpenMP clause: lastprivate (variable_list). */
257 OMP_CLAUSE_LASTPRIVATE
,
259 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
260 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
261 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
262 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
264 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
265 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
266 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
267 VAR_DECL placeholder, used like the above for C/C++ array
269 OMP_CLAUSE_REDUCTION
,
271 /* OpenMP clause: task_reduction (operator:variable_list). */
272 OMP_CLAUSE_TASK_REDUCTION
,
274 /* OpenMP clause: in_reduction (operator:variable_list). */
275 OMP_CLAUSE_IN_REDUCTION
,
277 /* OpenMP clause: copyin (variable_list). */
280 /* OpenMP clause: copyprivate (variable_list). */
281 OMP_CLAUSE_COPYPRIVATE
,
283 /* OpenMP clause: linear (variable-list[:linear-step]). */
286 /* OpenMP clause: affinity([depend-modifier :] variable-list). */
289 /* OpenMP clause: aligned (variable-list[:alignment]). */
292 /* OpenMP clause: allocate ([allocator:]variable-list). */
295 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
298 /* OpenMP clause: nontemporal (variable-list). */
299 OMP_CLAUSE_NONTEMPORAL
,
301 /* OpenMP clause: uniform (argument-list). */
304 /* OpenMP clause: to (extended-list).
305 Only when it appears in declare target. */
306 OMP_CLAUSE_TO_DECLARE
,
308 /* OpenMP clause: link (variable-list). */
311 /* OpenMP clause: detach (event-handle). */
314 /* OpenACC clause: use_device (variable-list).
315 OpenMP clause: use_device_ptr (ptr-list). */
316 OMP_CLAUSE_USE_DEVICE_PTR
,
318 /* OpenMP clause: use_device_addr (variable-list). */
319 OMP_CLAUSE_USE_DEVICE_ADDR
,
321 /* OpenMP clause: is_device_ptr (variable-list). */
322 OMP_CLAUSE_IS_DEVICE_PTR
,
324 /* OpenMP clause: inclusive (variable-list). */
325 OMP_CLAUSE_INCLUSIVE
,
327 /* OpenMP clause: exclusive (variable-list). */
328 OMP_CLAUSE_EXCLUSIVE
,
330 /* OpenMP clause: from (variable-list). */
333 /* OpenMP clause: to (variable-list). */
336 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
337 device, host (self), present, present_or_copy (pcopy), present_or_copyin
338 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
341 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
344 /* Internal structure to hold OpenACC cache directive's variable-list.
345 #pragma acc cache (variable-list). */
348 /* OpenACC clause: gang [(gang-argument-list)].
350 gang-argument-list: [gang-argument-list, ] gang-argument
351 gang-argument: [num:] integer-expression
352 | static: size-expression
353 size-expression: * | integer-expression. */
356 /* OpenACC clause: async [(integer-expression)]. */
359 /* OpenACC clause: wait [(integer-expression-list)]. */
362 /* OpenACC clause: auto. */
365 /* OpenACC clause: seq. */
368 /* Internal clause: temporary for combined loops expansion. */
369 OMP_CLAUSE__LOOPTEMP_
,
371 /* Internal clause: temporary for task reductions. */
372 OMP_CLAUSE__REDUCTEMP_
,
374 /* Internal clause: temporary for lastprivate(conditional:). */
375 OMP_CLAUSE__CONDTEMP_
,
377 /* Internal clause: temporary for inscan reductions. */
378 OMP_CLAUSE__SCANTEMP_
,
380 /* OpenACC/OpenMP clause: if (scalar-expression). */
383 /* OpenMP clause: num_threads (integer-expression). */
384 OMP_CLAUSE_NUM_THREADS
,
386 /* OpenMP clause: schedule. */
389 /* OpenMP clause: nowait. */
392 /* OpenMP clause: ordered [(constant-integer-expression)]. */
395 /* OpenACC/OpenMP clause: default. */
398 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
401 /* OpenMP clause: untied. */
404 /* OpenMP clause: final (scalar-expression). */
407 /* OpenMP clause: mergeable. */
408 OMP_CLAUSE_MERGEABLE
,
410 /* OpenMP clause: device (integer-expression). */
413 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
414 OMP_CLAUSE_DIST_SCHEDULE
,
416 /* OpenMP clause: inbranch. */
419 /* OpenMP clause: notinbranch. */
420 OMP_CLAUSE_NOTINBRANCH
,
422 /* OpenMP clause: num_teams(integer-expression). */
423 OMP_CLAUSE_NUM_TEAMS
,
425 /* OpenMP clause: thread_limit(integer-expression). */
426 OMP_CLAUSE_THREAD_LIMIT
,
428 /* OpenMP clause: proc_bind ({master,close,spread}). */
429 OMP_CLAUSE_PROC_BIND
,
431 /* OpenMP clause: safelen (constant-integer-expression). */
434 /* OpenMP clause: simdlen (constant-integer-expression). */
437 /* OpenMP clause: device_type ({host,nohost,any}). */
438 OMP_CLAUSE_DEVICE_TYPE
,
440 /* OpenMP clause: for. */
443 /* OpenMP clause: parallel. */
446 /* OpenMP clause: sections. */
449 /* OpenMP clause: taskgroup. */
450 OMP_CLAUSE_TASKGROUP
,
452 /* OpenMP clause: priority (integer-expression). */
455 /* OpenMP clause: grainsize (integer-expression). */
456 OMP_CLAUSE_GRAINSIZE
,
458 /* OpenMP clause: num_tasks (integer-expression). */
459 OMP_CLAUSE_NUM_TASKS
,
461 /* OpenMP clause: nogroup. */
464 /* OpenMP clause: threads. */
467 /* OpenMP clause: simd. */
470 /* OpenMP clause: hint (integer-expression). */
473 /* OpenMP clause: defaultmap (tofrom: scalar). */
474 OMP_CLAUSE_DEFAULTMAP
,
476 /* OpenMP clause: order (concurrent). */
479 /* OpenMP clause: bind (binding). */
482 /* OpenMP clause: filter (integer-expression). */
485 /* Internally used only clause, holding SIMD uid. */
486 OMP_CLAUSE__SIMDUID_
,
488 /* Internally used only clause, flag whether this is SIMT simd
492 /* OpenACC clause: independent. */
493 OMP_CLAUSE_INDEPENDENT
,
495 /* OpenACC clause: worker [( [num:] integer-expression)]. */
498 /* OpenACC clause: vector [( [length:] integer-expression)]. */
501 /* OpenACC clause: num_gangs (integer-expression). */
502 OMP_CLAUSE_NUM_GANGS
,
504 /* OpenACC clause: num_workers (integer-expression). */
505 OMP_CLAUSE_NUM_WORKERS
,
507 /* OpenACC clause: vector_length (integer-expression). */
508 OMP_CLAUSE_VECTOR_LENGTH
,
510 /* OpenACC clause: tile ( size-expr-list ). */
513 /* OpenACC clause: if_present. */
514 OMP_CLAUSE_IF_PRESENT
,
516 /* OpenACC clause: finalize. */
519 /* OpenACC clause: nohost. */
524 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
525 enum tree_node_structure_enum
{
526 #include "treestruct.def"
531 enum omp_clause_schedule_kind
{
532 OMP_CLAUSE_SCHEDULE_STATIC
,
533 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
534 OMP_CLAUSE_SCHEDULE_GUIDED
,
535 OMP_CLAUSE_SCHEDULE_AUTO
,
536 OMP_CLAUSE_SCHEDULE_RUNTIME
,
537 OMP_CLAUSE_SCHEDULE_MASK
= (1 << 3) - 1,
538 OMP_CLAUSE_SCHEDULE_MONOTONIC
= (1 << 3),
539 OMP_CLAUSE_SCHEDULE_NONMONOTONIC
= (1 << 4),
540 OMP_CLAUSE_SCHEDULE_LAST
= 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC
- 1
543 enum omp_clause_default_kind
{
544 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
545 OMP_CLAUSE_DEFAULT_SHARED
,
546 OMP_CLAUSE_DEFAULT_NONE
,
547 OMP_CLAUSE_DEFAULT_PRIVATE
,
548 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
549 OMP_CLAUSE_DEFAULT_PRESENT
,
550 OMP_CLAUSE_DEFAULT_LAST
553 enum omp_clause_defaultmap_kind
{
554 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED
,
555 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR
,
556 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE
,
557 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE
,
558 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER
,
559 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
= 7,
560 OMP_CLAUSE_DEFAULTMAP_ALLOC
= 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
561 OMP_CLAUSE_DEFAULTMAP_TO
= 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
562 OMP_CLAUSE_DEFAULTMAP_FROM
= 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
563 OMP_CLAUSE_DEFAULTMAP_TOFROM
= 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
564 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE
565 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
566 OMP_CLAUSE_DEFAULTMAP_NONE
= 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
567 OMP_CLAUSE_DEFAULTMAP_DEFAULT
568 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1),
569 OMP_CLAUSE_DEFAULTMAP_MASK
= 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK
+ 1)
572 enum omp_clause_bind_kind
{
573 OMP_CLAUSE_BIND_TEAMS
,
574 OMP_CLAUSE_BIND_PARALLEL
,
575 OMP_CLAUSE_BIND_THREAD
578 /* memory-order-clause on OpenMP atomic/flush constructs or
579 argument of atomic_default_mem_order clause. */
580 enum omp_memory_order
{
581 OMP_MEMORY_ORDER_UNSPECIFIED
,
582 OMP_MEMORY_ORDER_RELAXED
,
583 OMP_MEMORY_ORDER_ACQUIRE
,
584 OMP_MEMORY_ORDER_RELEASE
,
585 OMP_MEMORY_ORDER_ACQ_REL
,
586 OMP_MEMORY_ORDER_SEQ_CST
,
587 OMP_MEMORY_ORDER_MASK
= 7,
588 OMP_FAIL_MEMORY_ORDER_UNSPECIFIED
= OMP_MEMORY_ORDER_UNSPECIFIED
* 8,
589 OMP_FAIL_MEMORY_ORDER_RELAXED
= OMP_MEMORY_ORDER_RELAXED
* 8,
590 OMP_FAIL_MEMORY_ORDER_ACQUIRE
= OMP_MEMORY_ORDER_ACQUIRE
* 8,
591 OMP_FAIL_MEMORY_ORDER_RELEASE
= OMP_MEMORY_ORDER_RELEASE
* 8,
592 OMP_FAIL_MEMORY_ORDER_ACQ_REL
= OMP_MEMORY_ORDER_ACQ_REL
* 8,
593 OMP_FAIL_MEMORY_ORDER_SEQ_CST
= OMP_MEMORY_ORDER_SEQ_CST
* 8,
594 OMP_FAIL_MEMORY_ORDER_MASK
= OMP_MEMORY_ORDER_MASK
* 8
596 #define OMP_FAIL_MEMORY_ORDER_SHIFT 3
598 /* There is a TYPE_QUAL value for each type qualifier. They can be
599 combined by bitwise-or to form the complete set of qualifiers for a
602 TYPE_UNQUALIFIED
= 0x0,
603 TYPE_QUAL_CONST
= 0x1,
604 TYPE_QUAL_VOLATILE
= 0x2,
605 TYPE_QUAL_RESTRICT
= 0x4,
606 TYPE_QUAL_ATOMIC
= 0x8
609 /* Standard named or nameless data types of the C compiler. */
640 TI_INTEGER_MINUS_ONE
,
661 /* The _FloatN and _FloatNx types must be consecutive, and in the
662 same sequence as the corresponding complex types, which must also
663 be consecutive; _FloatN must come before _FloatNx; the order must
664 also be the same as in the floatn_nx_types array and the RID_*
665 values in c-common.h. This is so that iterations over these
666 types work as intended. */
668 TI_FLOATN_TYPE_FIRST
= TI_FLOAT16_TYPE
,
669 TI_FLOATN_NX_TYPE_FIRST
= TI_FLOAT16_TYPE
,
673 TI_FLOATN_TYPE_LAST
= TI_FLOAT128_TYPE
,
674 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
676 TI_FLOATNX_TYPE_FIRST
= TI_FLOAT32X_TYPE
,
679 TI_FLOATNX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
680 TI_FLOATN_NX_TYPE_LAST
= TI_FLOAT128X_TYPE
,
681 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
682 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
683 - TI_FLOATN_NX_TYPE_FIRST \
686 /* Put the complex types after their component types, so that in (sequential)
687 tree streaming we can assert that their component types have already been
688 handled (see tree-streamer.c:record_common_node). */
689 TI_COMPLEX_INTEGER_TYPE
,
690 TI_COMPLEX_FLOAT_TYPE
,
691 TI_COMPLEX_DOUBLE_TYPE
,
692 TI_COMPLEX_LONG_DOUBLE_TYPE
,
694 TI_COMPLEX_FLOAT16_TYPE
,
695 TI_COMPLEX_FLOATN_NX_TYPE_FIRST
= TI_COMPLEX_FLOAT16_TYPE
,
696 TI_COMPLEX_FLOAT32_TYPE
,
697 TI_COMPLEX_FLOAT64_TYPE
,
698 TI_COMPLEX_FLOAT128_TYPE
,
699 TI_COMPLEX_FLOAT32X_TYPE
,
700 TI_COMPLEX_FLOAT64X_TYPE
,
701 TI_COMPLEX_FLOAT128X_TYPE
,
705 TI_LONG_DOUBLE_PTR_TYPE
,
715 TI_VA_LIST_GPR_COUNTER_FIELD
,
716 TI_VA_LIST_FPR_COUNTER_FIELD
,
719 TI_CONST_TM_PTR_TYPE
,
721 TI_CONST_FENV_T_PTR_TYPE
,
722 TI_FEXCEPT_T_PTR_TYPE
,
723 TI_CONST_FEXCEPT_T_PTR_TYPE
,
724 TI_POINTER_SIZED_TYPE
,
741 TI_SAT_ULLFRACT_TYPE
,
757 TI_SAT_ULLACCUM_TYPE
,
804 /* Nodes below here change during compilation, and should therefore
805 not be in the C++ module's global tree table. */
807 TI_OPTIMIZATION_DEFAULT
,
808 TI_OPTIMIZATION_CURRENT
,
809 TI_TARGET_OPTION_DEFAULT
,
810 TI_TARGET_OPTION_CURRENT
,
811 TI_CURRENT_TARGET_PRAGMA
,
812 TI_CURRENT_OPTIMIZE_PRAGMA
,
820 /* An enumeration of the standard C integer types. These must be
821 ordered so that shorter types appear before longer ones, and so
822 that signed types appear before unsigned ones, for the correct
823 functioning of interpret_integer() in c-lex.c. */
824 enum integer_type_kind
{
835 itk_unsigned_long_long
,
849 /* A pointer-to-function member type looks like:
856 If __pfn is NULL, it is a NULL pointer-to-member-function.
858 (Because the vtable is always the first thing in the object, we
859 don't need its offset.) If the function is virtual, then PFN is
860 one plus twice the index into the vtable; otherwise, it is just a
861 pointer to the function.
863 Unfortunately, using the lowest bit of PFN doesn't work in
864 architectures that don't impose alignment requirements on function
865 addresses, or that use the lowest bit to tell one ISA from another,
866 for example. For such architectures, we use the lowest bit of
867 DELTA instead of the lowest bit of the PFN, and DELTA will be
869 enum ptrmemfunc_vbit_where_t
{
870 ptrmemfunc_vbit_in_pfn
,
871 ptrmemfunc_vbit_in_delta
874 /* Flags that may be passed in the third argument of decl_attributes, and
875 to handler functions for attributes. */
876 enum attribute_flags
{
877 /* The type passed in is the type of a DECL, and any attributes that
878 should be passed in again to be applied to the DECL rather than the
879 type should be returned. */
880 ATTR_FLAG_DECL_NEXT
= 1,
881 /* The type passed in is a function return type, and any attributes that
882 should be passed in again to be applied to the function type rather
883 than the return type should be returned. */
884 ATTR_FLAG_FUNCTION_NEXT
= 2,
885 /* The type passed in is an array element type, and any attributes that
886 should be passed in again to be applied to the array type rather
887 than the element type should be returned. */
888 ATTR_FLAG_ARRAY_NEXT
= 4,
889 /* The type passed in is a structure, union or enumeration type being
890 created, and should be modified in place. */
891 ATTR_FLAG_TYPE_IN_PLACE
= 8,
892 /* The attributes are being applied by default to a library function whose
893 name indicates known behavior, and should be silently ignored if they
894 are not in fact compatible with the function type. */
895 ATTR_FLAG_BUILT_IN
= 16,
896 /* A given attribute has been parsed as a C++-11 attribute. */
897 ATTR_FLAG_CXX11
= 32,
898 /* The attribute handler is being invoked with an internal argument
899 that may not otherwise be valid when specified in source code. */
900 ATTR_FLAG_INTERNAL
= 64
903 /* Types used to represent sizes. */
904 enum size_type_kind
{
905 stk_sizetype
, /* Normal representation of sizes in bytes. */
906 stk_ssizetype
, /* Signed representation of sizes in bytes. */
907 stk_bitsizetype
, /* Normal representation of sizes in bits. */
908 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
912 /* Flags controlling operand_equal_p() behavior. */
913 enum operand_equal_flag
{
916 OEP_MATCH_SIDE_EFFECTS
= 4,
918 /* Internal within operand_equal_p: */
919 OEP_NO_HASH_CHECK
= 16,
920 /* Internal within inchash::add_expr: */
922 /* Makes operand_equal_p handle more expressions: */
923 OEP_LEXICOGRAPHIC
= 64,
925 /* For OEP_ADDRESS_OF of COMPONENT_REFs, only consider same fields as
926 equivalent rather than also different fields with the same offset. */
927 OEP_ADDRESS_OF_SAME_FIELD
= 256,
928 /* In conjunction with OEP_LEXICOGRAPHIC considers names of declarations
929 of the same kind. Used to compare VLA bounds involving parameters
930 across redeclarations of the same function. */
934 /* Enum and arrays used for tree allocation stats.
935 Keep in sync with tree.c:tree_node_kind_names. */
936 enum tree_node_kind
{
956 enum annot_expr_kind
{
957 annot_expr_ivdep_kind
,
958 annot_expr_unroll_kind
,
959 annot_expr_no_vector_kind
,
960 annot_expr_vector_kind
,
961 annot_expr_parallel_kind
,
965 /*---------------------------------------------------------------------------
967 ---------------------------------------------------------------------------*/
968 /* When processing aliases at the symbol table level, we need the
969 declaration of target. For this reason we need to queue aliases and
970 process them after all declarations has been produced. */
971 struct GTY(()) alias_pair
{
976 /* An initialization priority. */
977 typedef unsigned short priority_type
;
979 /* The type of a callback function for walking over tree structure. */
980 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
982 /* The type of a callback function that represents a custom walk_tree. */
983 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
984 void *, hash_set
<tree
> *);
987 /*---------------------------------------------------------------------------
989 ---------------------------------------------------------------------------*/
990 /* A tree node can represent a data type, a variable, an expression
991 or a statement. Each node has a TREE_CODE which says what kind of
992 thing it represents. Some common codes are:
993 INTEGER_TYPE -- represents a type of integers.
994 ARRAY_TYPE -- represents a type of pointer.
995 VAR_DECL -- represents a declared variable.
996 INTEGER_CST -- represents a constant integer value.
997 PLUS_EXPR -- represents a sum (an expression).
999 As for the contents of a tree node: there are some fields
1000 that all nodes share. Each TREE_CODE has various special-purpose
1001 fields as well. The fields of a node are never accessed directly,
1002 always through accessor macros. */
1004 /* Every kind of tree node starts with this structure,
1005 so all nodes have these fields.
1007 See the accessor macros, defined below, for documentation of the
1008 fields, and the table below which connects the fields and the
1011 struct GTY(()) tree_base
{
1012 ENUM_BITFIELD(tree_code
) code
: 16;
1014 unsigned side_effects_flag
: 1;
1015 unsigned constant_flag
: 1;
1016 unsigned addressable_flag
: 1;
1017 unsigned volatile_flag
: 1;
1018 unsigned readonly_flag
: 1;
1019 unsigned asm_written_flag
: 1;
1020 unsigned nowarning_flag
: 1;
1021 unsigned visited
: 1;
1023 unsigned used_flag
: 1;
1024 unsigned nothrow_flag
: 1;
1025 unsigned static_flag
: 1;
1026 unsigned public_flag
: 1;
1027 unsigned private_flag
: 1;
1028 unsigned protected_flag
: 1;
1029 unsigned deprecated_flag
: 1;
1030 unsigned default_def_flag
: 1;
1033 /* The bits in the following structure should only be used with
1034 accessor macros that constrain inputs with tree checking. */
1036 unsigned lang_flag_0
: 1;
1037 unsigned lang_flag_1
: 1;
1038 unsigned lang_flag_2
: 1;
1039 unsigned lang_flag_3
: 1;
1040 unsigned lang_flag_4
: 1;
1041 unsigned lang_flag_5
: 1;
1042 unsigned lang_flag_6
: 1;
1043 unsigned saturating_flag
: 1;
1045 unsigned unsigned_flag
: 1;
1046 unsigned packed_flag
: 1;
1047 unsigned user_align
: 1;
1048 unsigned nameless_flag
: 1;
1049 unsigned atomic_flag
: 1;
1050 unsigned unavailable_flag
: 1;
1051 unsigned spare0
: 2;
1053 unsigned spare1
: 8;
1055 /* This field is only used with TREE_TYPE nodes; the only reason it is
1056 present in tree_base instead of tree_type is to save space. The size
1057 of the field must be large enough to hold addr_space_t values. */
1058 unsigned address_space
: 8;
1061 /* The following fields are present in tree_base to save space. The
1062 nodes using them do not require any of the flags above and so can
1063 make better use of the 4-byte sized word. */
1065 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
1067 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1068 its native precision. */
1069 unsigned char unextended
;
1071 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
1072 wider precisions based on its TYPE_SIGN. */
1073 unsigned char extended
;
1075 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1076 offset_int precision, with smaller integers being extended
1077 according to their TYPE_SIGN. This is equal to one of the two
1078 fields above but is cached for speed. */
1079 unsigned char offset
;
1082 /* VEC length. This field is only used with TREE_VEC. */
1085 /* This field is only used with VECTOR_CST. */
1087 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
1088 unsigned int log2_npatterns
: 8;
1090 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
1091 unsigned int nelts_per_pattern
: 8;
1093 /* For future expansion. */
1094 unsigned int unused
: 16;
1097 /* SSA version number. This field is only used with SSA_NAME. */
1098 unsigned int version
;
1100 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
1101 unsigned int chrec_var
;
1103 /* Internal function code. */
1104 enum internal_fn ifn
;
1106 /* OMP_ATOMIC* memory order. */
1107 enum omp_memory_order omp_atomic_memory_order
;
1109 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
1110 expression trees and specify known data non-dependences. For
1111 two memory references in a function they are known to not
1112 alias if dependence_info.clique are equal and dependence_info.base
1113 are distinct. Clique number zero means there is no information,
1114 clique number one is populated from function global information
1115 and thus needs no remapping on transforms like loop unrolling. */
1117 unsigned short clique
;
1118 unsigned short base
;
1120 } GTY((skip(""))) u
;
1123 /* The following table lists the uses of each of the above flags and
1124 for which types of nodes they are defined.
1129 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1132 CONSTRUCTOR, IDENTIFIER_NODE
1135 CALL_EXPR_TAILCALL in
1141 PREDICT_EXPR_OUTCOME in
1147 VAR_DECL, FUNCTION_DECL
1150 TREE_NO_TRAMPOLINE in
1156 TREE_SYMBOL_REFERENCED in
1160 TARGET_EXPR, WITH_CLEANUP_EXPR
1162 TRY_CATCH_IS_CLEANUP in
1168 TYPE_REF_CAN_ALIAS_ALL in
1169 POINTER_TYPE, REFERENCE_TYPE
1177 TRANSACTION_EXPR_OUTER in
1180 SSA_NAME_ANTI_RANGE_P in
1189 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1192 VAR_DECL, FUNCTION_DECL
1195 CONSTRUCTOR_NO_CLEARING in
1201 CALL_EXPR_VA_ARG_PACK in
1204 TYPE_CACHED_VALUES_P in
1207 SAVE_EXPR_RESOLVED_P in
1210 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1211 OMP_CLAUSE_LASTPRIVATE
1213 OMP_CLAUSE_PRIVATE_DEBUG in
1216 OMP_CLAUSE_LINEAR_NO_COPYIN in
1219 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1222 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1223 OMP_CLAUSE_{,TASK_,IN_}REDUCTION
1225 OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in
1226 OMP_CLAUSE_USE_DEVICE_PTR
1228 TRANSACTION_EXPR_RELAXED in
1231 FALLTHROUGH_LABEL_P in
1234 SSA_NAME_IS_VIRTUAL_OPERAND in
1237 EXPR_LOCATION_WRAPPER_P in
1238 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1245 CALL_EXPR_RETURN_SLOT_OPT in
1251 OMP_PARALLEL_COMBINED in
1254 OMP_CLAUSE_PRIVATE_OUTER_REF in
1257 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1260 TYPE_REF_IS_RVALUE in
1272 CALL_FROM_THUNK_P and
1273 CALL_ALLOCA_FOR_VAR_P and
1274 CALL_FROM_NEW_OR_DELETE_P in
1277 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1285 TREE_SIDE_EFFECTS in
1295 TREE_THIS_VOLATILE in
1318 TYPE_SIZES_GIMPLIFIED in
1332 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1333 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1336 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1353 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1355 SSA_NAME_IN_FREE_LIST in
1367 IDENTIFIER_TRANSPARENT_ALIAS in
1370 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1382 all trees (used liberally by many passes)
1386 TYPE_REVERSE_STORAGE_ORDER in
1387 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1392 VAR_DECL_IS_VIRTUAL_OPERAND in
1407 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1409 TYPE_VECTOR_OPAQUE in
1412 SSA_NAME_IS_DEFAULT_DEF in
1415 DECL_NONLOCAL_FRAME in
1418 REF_REVERSE_STORAGE_ORDER in
1419 BIT_FIELD_REF, MEM_REF
1421 FUNC_ADDR_BY_DESCRIPTOR in
1424 CALL_EXPR_BY_DESCRIPTOR in
1429 struct GTY(()) tree_typed
{
1430 struct tree_base base
;
1434 struct GTY(()) tree_common
{
1435 struct tree_typed typed
;
1439 struct GTY(()) tree_int_cst
{
1440 struct tree_typed typed
;
1441 HOST_WIDE_INT val
[1];
1445 struct GTY(()) tree_real_cst
{
1446 struct tree_typed typed
;
1447 struct real_value
* real_cst_ptr
;
1450 struct GTY(()) tree_fixed_cst
{
1451 struct tree_typed typed
;
1452 struct fixed_value
* fixed_cst_ptr
;
1455 struct GTY(()) tree_string
{
1456 struct tree_typed typed
;
1461 struct GTY(()) tree_complex
{
1462 struct tree_typed typed
;
1467 struct GTY(()) tree_vector
{
1468 struct tree_typed typed
;
1469 tree
GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts
[1];
1472 struct GTY(()) tree_poly_int_cst
{
1473 struct tree_typed typed
;
1474 tree coeffs
[NUM_POLY_INT_COEFFS
];
1477 struct GTY(()) tree_identifier
{
1478 struct tree_common common
;
1479 struct ht_identifier id
;
1482 struct GTY(()) tree_list
{
1483 struct tree_common common
;
1488 struct GTY(()) tree_vec
{
1489 struct tree_common common
;
1490 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1493 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1494 element. INDEX can optionally design the position of VALUE: in arrays,
1495 it is the index where VALUE has to be placed; in structures, it is the
1496 FIELD_DECL of the member. */
1497 struct GTY(()) constructor_elt
{
1502 struct GTY(()) tree_constructor
{
1503 struct tree_typed typed
;
1504 vec
<constructor_elt
, va_gc
> *elts
;
1507 enum omp_clause_depend_kind
1509 OMP_CLAUSE_DEPEND_IN
,
1510 OMP_CLAUSE_DEPEND_OUT
,
1511 OMP_CLAUSE_DEPEND_INOUT
,
1512 OMP_CLAUSE_DEPEND_MUTEXINOUTSET
,
1513 OMP_CLAUSE_DEPEND_SOURCE
,
1514 OMP_CLAUSE_DEPEND_SINK
,
1515 OMP_CLAUSE_DEPEND_DEPOBJ
,
1516 OMP_CLAUSE_DEPEND_LAST
1519 enum omp_clause_proc_bind_kind
1521 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1522 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1523 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1524 OMP_CLAUSE_PROC_BIND_PRIMARY
= 2,
1525 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1526 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1527 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1528 OMP_CLAUSE_PROC_BIND_LAST
1531 enum omp_clause_device_type_kind
1533 OMP_CLAUSE_DEVICE_TYPE_HOST
= 1,
1534 OMP_CLAUSE_DEVICE_TYPE_NOHOST
= 2,
1535 OMP_CLAUSE_DEVICE_TYPE_ANY
= 3
1538 enum omp_clause_linear_kind
1540 OMP_CLAUSE_LINEAR_DEFAULT
,
1541 OMP_CLAUSE_LINEAR_REF
,
1542 OMP_CLAUSE_LINEAR_VAL
,
1543 OMP_CLAUSE_LINEAR_UVAL
1546 struct GTY(()) tree_exp
{
1547 struct tree_typed typed
;
1549 tree
GTY ((special ("tree_exp"),
1550 desc ("TREE_CODE ((tree) &%0)")))
1554 /* Immediate use linking structure. This structure is used for maintaining
1555 a doubly linked list of uses of an SSA_NAME. */
1556 struct GTY(()) ssa_use_operand_t
{
1557 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1558 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1559 /* Immediate uses for a given SSA name are maintained as a cyclic
1560 list. To recognize the root of this list, the location field
1561 needs to point to the original SSA name. Since statements and
1562 SSA names are of different data types, we need this union. See
1563 the explanation in struct imm_use_iterator. */
1564 union { gimple
*stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1565 tree
*GTY((skip(""))) use
;
1568 struct GTY(()) tree_ssa_name
{
1569 struct tree_typed typed
;
1571 /* _DECL wrapped by this SSA name. */
1574 /* Statement that defines this SSA name. */
1577 /* Value range information. */
1578 union ssa_name_info_type
{
1579 /* Pointer attributes used for alias analysis. */
1580 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1581 /* Value range attributes used for zero/sign extension elimination. */
1582 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1583 } GTY ((desc ("%1.typed.type ?" \
1584 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1586 /* Immediate uses list for this SSA_NAME. */
1587 struct ssa_use_operand_t imm_uses
;
1590 struct GTY(()) phi_arg_d
{
1591 /* imm_use MUST be the first element in struct because we do some
1592 pointer arithmetic with it. See phi_arg_index_from_use. */
1593 struct ssa_use_operand_t imm_use
;
1598 struct GTY(()) tree_omp_clause
{
1599 struct tree_common common
;
1601 enum omp_clause_code code
;
1602 union omp_clause_subcode
{
1603 enum omp_clause_default_kind default_kind
;
1604 enum omp_clause_schedule_kind schedule_kind
;
1605 enum omp_clause_depend_kind depend_kind
;
1606 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1607 unsigned int map_kind
;
1608 enum omp_clause_proc_bind_kind proc_bind_kind
;
1609 enum tree_code reduction_code
;
1610 enum omp_clause_linear_kind linear_kind
;
1611 enum tree_code if_modifier
;
1612 enum omp_clause_defaultmap_kind defaultmap_kind
;
1613 enum omp_clause_bind_kind bind_kind
;
1614 enum omp_clause_device_type_kind device_type_kind
;
1615 } GTY ((skip
)) subcode
;
1617 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1619 gimple_seq gimple_reduction_init
;
1620 gimple_seq gimple_reduction_merge
;
1622 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1626 struct GTY(()) tree_block
{
1627 struct tree_base base
;
1633 location_t end_locus
;
1636 vec
<tree
, va_gc
> *nonlocalized_vars
;
1640 tree abstract_origin
;
1641 tree fragment_origin
;
1642 tree fragment_chain
;
1644 /* Pointer to the DWARF lexical block. */
1645 struct die_struct
*die
;
1648 struct GTY(()) tree_type_common
{
1649 struct tree_common common
;
1655 unsigned int precision
: 10;
1656 unsigned no_force_blk_flag
: 1;
1657 unsigned needs_constructing_flag
: 1;
1658 unsigned transparent_aggr_flag
: 1;
1659 unsigned restrict_flag
: 1;
1660 unsigned contains_placeholder_bits
: 2;
1662 ENUM_BITFIELD(machine_mode
) mode
: 8;
1664 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE.
1665 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */
1666 unsigned string_flag
: 1;
1667 unsigned lang_flag_0
: 1;
1668 unsigned lang_flag_1
: 1;
1669 unsigned lang_flag_2
: 1;
1670 unsigned lang_flag_3
: 1;
1671 unsigned lang_flag_4
: 1;
1672 unsigned lang_flag_5
: 1;
1673 unsigned lang_flag_6
: 1;
1674 unsigned lang_flag_7
: 1;
1676 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1677 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1678 the latter being usually the larger. For ELF it is 8<<28,
1679 so we need to store the value 32 (not 31, as we need the zero
1680 as well), hence six bits. */
1682 unsigned warn_if_not_align
: 6;
1683 unsigned typeless_storage
: 1;
1684 unsigned empty_flag
: 1;
1685 unsigned indivisible_p
: 1;
1686 unsigned spare
: 16;
1688 alias_set_type alias_set
;
1691 union tree_type_symtab
{
1692 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1693 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1694 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1702 struct GTY(()) tree_type_with_lang_specific
{
1703 struct tree_type_common common
;
1704 /* Points to a structure whose details depend on the language in use. */
1705 struct lang_type
*lang_specific
;
1708 struct GTY(()) tree_type_non_common
{
1709 struct tree_type_with_lang_specific with_lang_specific
;
1716 struct GTY (()) tree_binfo
{
1717 struct tree_common common
;
1723 vec
<tree
, va_gc
> *base_accesses
;
1729 vec
<tree
, va_gc
> base_binfos
;
1732 struct GTY(()) tree_decl_minimal
{
1733 struct tree_common common
;
1740 struct GTY(()) tree_decl_common
{
1741 struct tree_decl_minimal common
;
1744 ENUM_BITFIELD(machine_mode
) mode
: 8;
1746 unsigned nonlocal_flag
: 1;
1747 unsigned virtual_flag
: 1;
1748 unsigned ignored_flag
: 1;
1749 unsigned abstract_flag
: 1;
1750 unsigned artificial_flag
: 1;
1751 unsigned preserve_flag
: 1;
1752 unsigned debug_expr_is_from
: 1;
1754 unsigned lang_flag_0
: 1;
1755 unsigned lang_flag_1
: 1;
1756 unsigned lang_flag_2
: 1;
1757 unsigned lang_flag_3
: 1;
1758 unsigned lang_flag_4
: 1;
1759 unsigned lang_flag_5
: 1;
1760 unsigned lang_flag_6
: 1;
1761 unsigned lang_flag_7
: 1;
1762 unsigned lang_flag_8
: 1;
1764 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1765 In TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P.
1766 In FIELD_DECL, this is DECL_FIELD_ABI_IGNORED. */
1767 unsigned decl_flag_0
: 1;
1768 /* In FIELD_DECL, this is DECL_BIT_FIELD
1769 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1770 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1771 unsigned decl_flag_1
: 1;
1772 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1773 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1774 DECL_HAS_VALUE_EXPR_P. */
1775 unsigned decl_flag_2
: 1;
1776 /* In FIELD_DECL, this is DECL_PADDING_P. */
1777 unsigned decl_flag_3
: 1;
1778 /* Logically, these two would go in a theoretical base shared by var and
1780 unsigned not_gimple_reg_flag
: 1;
1781 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1782 unsigned decl_by_reference_flag
: 1;
1783 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1784 unsigned decl_read_flag
: 1;
1785 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1786 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */
1787 unsigned decl_nonshareable_flag
: 1;
1789 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1790 unsigned int off_align
: 6;
1792 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1793 unsigned int align
: 6;
1795 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1796 TYPE_WARN_IF_NOT_ALIGN. */
1797 unsigned int warn_if_not_align
: 6;
1799 /* 14 bits unused. */
1801 /* UID for points-to sets, stable over copying from inlining. */
1802 unsigned int pt_uid
;
1807 tree abstract_origin
;
1809 /* Points to a structure whose details depend on the language in use. */
1810 struct lang_decl
*lang_specific
;
1813 struct GTY(()) tree_decl_with_rtl
{
1814 struct tree_decl_common common
;
1818 struct GTY(()) tree_field_decl
{
1819 struct tree_decl_common common
;
1822 tree bit_field_type
;
1828 struct GTY(()) tree_label_decl
{
1829 struct tree_decl_with_rtl common
;
1831 int eh_landing_pad_nr
;
1834 struct GTY(()) tree_result_decl
{
1835 struct tree_decl_with_rtl common
;
1838 struct GTY(()) tree_const_decl
{
1839 struct tree_decl_common common
;
1842 struct GTY(()) tree_parm_decl
{
1843 struct tree_decl_with_rtl common
;
1847 struct GTY(()) tree_decl_with_vis
{
1848 struct tree_decl_with_rtl common
;
1849 tree assembler_name
;
1850 struct symtab_node
*symtab_node
;
1852 /* Belong to VAR_DECL exclusively. */
1853 unsigned defer_output
: 1;
1854 unsigned hard_register
: 1;
1855 unsigned common_flag
: 1;
1856 unsigned in_text_section
: 1;
1857 unsigned in_constant_pool
: 1;
1858 unsigned dllimport_flag
: 1;
1859 /* Don't belong to VAR_DECL exclusively. */
1860 unsigned weak_flag
: 1;
1862 unsigned seen_in_bind_expr
: 1;
1863 unsigned comdat_flag
: 1;
1864 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1865 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1866 unsigned visibility_specified
: 1;
1868 /* Belong to FUNCTION_DECL exclusively. */
1869 unsigned init_priority_p
: 1;
1870 /* Used by C++ only. Might become a generic decl flag. */
1871 unsigned shadowed_for_var_p
: 1;
1872 /* Belong to FUNCTION_DECL exclusively. */
1873 unsigned cxx_constructor
: 1;
1874 /* Belong to FUNCTION_DECL exclusively. */
1875 unsigned cxx_destructor
: 1;
1876 /* Belong to FUNCTION_DECL exclusively. */
1878 /* Belong to FUNCTION_DECL exclusively. */
1879 unsigned regdecl_flag
: 1;
1880 /* 14 unused bits. */
1881 /* 32 more unused on 64 bit HW. */
1884 struct GTY(()) tree_var_decl
{
1885 struct tree_decl_with_vis common
;
1888 struct GTY(()) tree_decl_non_common
{
1889 struct tree_decl_with_vis common
;
1890 /* Almost all FE's use this. */
1894 /* Classify a special function declaration type. */
1896 enum function_decl_type
1906 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1907 arguments/result/saved_tree fields by front ends. It was either inherit
1908 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1909 which seemed a bit strange. */
1911 struct GTY(()) tree_function_decl
{
1912 struct tree_decl_non_common common
;
1916 /* Arguments of the function. */
1918 /* The personality function. Used for stack unwinding. */
1921 /* Function specific options that are used by this function. */
1922 tree function_specific_target
; /* target options */
1923 tree function_specific_optimization
; /* optimization options */
1925 /* Generic function body. */
1927 /* Index within a virtual table. */
1930 /* In a FUNCTION_DECL this is DECL_UNCHECKED_FUNCTION_CODE. */
1931 unsigned int function_code
;
1933 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1934 unsigned static_ctor_flag
: 1;
1935 unsigned static_dtor_flag
: 1;
1936 unsigned uninlinable
: 1;
1937 unsigned possibly_inlined
: 1;
1938 unsigned novops_flag
: 1;
1939 unsigned returns_twice_flag
: 1;
1941 unsigned malloc_flag
: 1;
1942 unsigned declared_inline_flag
: 1;
1943 unsigned no_inline_warning_flag
: 1;
1944 unsigned no_instrument_function_entry_exit
: 1;
1945 unsigned no_limit_stack
: 1;
1946 unsigned disregard_inline_limits
: 1;
1947 unsigned pure_flag
: 1;
1948 unsigned looping_const_or_pure_flag
: 1;
1950 /* Align the bitfield to boundary of a byte. */
1951 ENUM_BITFIELD(function_decl_type
) decl_type
: 2;
1952 unsigned has_debug_args_flag
: 1;
1953 unsigned versioned_function
: 1;
1954 unsigned replaceable_operator
: 1;
1956 /* 11 bits left for future expansion. */
1957 /* 32 bits on 64-bit HW. */
1960 struct GTY(()) tree_translation_unit_decl
{
1961 struct tree_decl_common common
;
1962 /* Source language of this translation unit. Used for DWARF output. */
1963 const char * GTY((skip(""))) language
;
1964 /* TODO: Non-optimization used to build this translation unit. */
1965 /* TODO: Root of a partial DWARF tree for global types and decls. */
1968 struct GTY(()) tree_type_decl
{
1969 struct tree_decl_non_common common
;
1973 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1975 struct tree_statement_list_node
*prev
;
1976 struct tree_statement_list_node
*next
;
1980 struct GTY(()) tree_statement_list
1982 struct tree_typed typed
;
1983 struct tree_statement_list_node
*head
;
1984 struct tree_statement_list_node
*tail
;
1988 /* Optimization options used by a function. */
1990 struct GTY(()) tree_optimization_option
{
1991 struct tree_base base
;
1993 /* The optimization options used by the user. */
1994 struct cl_optimization
*opts
;
1996 /* Target optabs for this set of optimization options. This is of
1997 type `struct target_optabs *'. */
1998 void *GTY ((atomic
)) optabs
;
2000 /* The value of this_target_optabs against which the optabs above were
2002 struct target_optabs
*GTY ((skip
)) base_optabs
;
2005 /* Forward declaration, defined in target-globals.h. */
2007 class GTY(()) target_globals
;
2009 /* Target options used by a function. */
2011 struct GTY(()) tree_target_option
{
2012 struct tree_base base
;
2014 /* Target globals for the corresponding target option. */
2015 class target_globals
*globals
;
2017 /* The optimization options used by the user. */
2018 struct cl_target_option
*opts
;
2021 /* Define the overall contents of a tree node.
2022 It may be any of the structures declared above
2023 for various types of node. */
2024 union GTY ((ptr_alias (union lang_tree_node
),
2025 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
2026 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
2027 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
2028 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
2029 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
2030 struct tree_poly_int_cst
GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst
;
2031 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
2032 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
2033 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
2034 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
2035 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
2036 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
2037 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
2038 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
2039 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
2040 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
2042 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
2043 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
2044 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
2045 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
2046 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
2047 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
2048 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
2049 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
2050 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
2051 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
2052 translation_unit_decl
;
2053 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
2054 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
2055 type_with_lang_specific
;
2056 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
2058 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
2059 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
2060 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
2061 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
2062 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
2063 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
2064 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
2065 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
2066 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
2067 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
2068 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
2071 /* Structure describing an attribute and a function to handle it. */
2072 struct attribute_spec
{
2073 /* The name of the attribute (without any leading or trailing __),
2074 or NULL to mark the end of a table of attributes. */
2076 /* The minimum length of the list of arguments of the attribute. */
2078 /* The maximum length of the list of arguments of the attribute
2079 (-1 for no maximum). */
2081 /* Whether this attribute requires a DECL. If it does, it will be passed
2082 from types of DECLs, function return types and array element types to
2083 the DECLs, function types and array types respectively; but when
2084 applied to a type in any other circumstances, it will be ignored with
2085 a warning. (If greater control is desired for a given attribute,
2086 this should be false, and the flags argument to the handler may be
2087 used to gain greater control in that case.) */
2089 /* Whether this attribute requires a type. If it does, it will be passed
2090 from a DECL to the type of that DECL. */
2092 /* Whether this attribute requires a function (or method) type. If it does,
2093 it will be passed from a function pointer type to the target type,
2094 and from a function return type (which is not itself a function
2095 pointer type) to the function type. */
2096 bool function_type_required
;
2097 /* Specifies if attribute affects type's identity. */
2098 bool affects_type_identity
;
2099 /* Function to handle this attribute. NODE points to the node to which
2100 the attribute is to be applied. If a DECL, it should be modified in
2101 place; if a TYPE, a copy should be created. NAME is the canonicalized
2102 name of the attribute i.e. without any leading or trailing underscores.
2103 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
2104 further information about the context of the attribute. Afterwards, the
2105 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
2106 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
2107 error, as well as in any other cases when the attributes should not be
2108 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
2109 applied to another type or DECL later may be returned;
2110 otherwise the return value should be NULL_TREE. This pointer may be
2111 NULL if no special handling is required beyond the checks implied
2112 by the rest of this structure. */
2113 tree (*handler
) (tree
*node
, tree name
, tree args
,
2114 int flags
, bool *no_add_attrs
);
2116 /* Specifies the name of an attribute that's mutually exclusive with
2117 this one, and whether the relationship applies to the function,
2118 variable, or type form of the attribute. */
2126 /* An array of attribute exclusions describing names of other attributes
2127 that this attribute is mutually exclusive with. */
2128 const exclusions
*exclude
;
2131 /* These functions allow a front-end to perform a manual layout of a
2132 RECORD_TYPE. (For instance, if the placement of subsequent fields
2133 depends on the placement of fields so far.) Begin by calling
2134 start_record_layout. Then, call place_field for each of the
2135 fields. Then, call finish_record_layout. See layout_type for the
2136 default way in which these functions are used. */
2137 typedef struct record_layout_info_s
{
2138 /* The RECORD_TYPE that we are laying out. */
2140 /* The offset into the record so far, in bytes, not including bits in
2143 /* The last known alignment of SIZE. */
2144 unsigned int offset_align
;
2145 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
2147 /* The alignment of the record so far, in bits. */
2148 unsigned int record_align
;
2149 /* The alignment of the record so far, ignoring #pragma pack and
2150 __attribute__ ((packed)), in bits. */
2151 unsigned int unpacked_align
;
2152 /* The previous field laid out. */
2154 /* The static variables (i.e., class variables, as opposed to
2155 instance variables) encountered in T. */
2156 vec
<tree
, va_gc
> *pending_statics
;
2157 /* Bits remaining in the current alignment group */
2158 int remaining_in_alignment
;
2159 /* True if we've seen a packed field that didn't have normal
2160 alignment anyway. */
2161 int packed_maybe_necessary
;
2162 } *record_layout_info
;
2164 /* Iterator for going through the function arguments. */
2165 struct function_args_iterator
{
2166 tree next
; /* TREE_LIST pointing to the next argument */
2169 /* Structures to map from a tree to another tree. */
2170 struct GTY(()) tree_map_base
{
2174 /* Map from a tree to another tree. */
2176 struct GTY((for_user
)) tree_map
{
2177 struct tree_map_base base
;
2182 /* Map from a decl tree to another tree. */
2183 struct GTY((for_user
)) tree_decl_map
{
2184 struct tree_map_base base
;
2188 /* Map from a tree to an int. */
2189 struct GTY((for_user
)) tree_int_map
{
2190 struct tree_map_base base
;
2194 /* Map from a decl tree to a tree vector. */
2195 struct GTY((for_user
)) tree_vec_map
{
2196 struct tree_map_base base
;
2197 vec
<tree
, va_gc
> *to
;
2200 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2201 have to go towards the end of tree.h so that union tree_node is fully
2202 defined by this point. */
2204 /* Structure containing iterator state. */
2205 struct call_expr_arg_iterator
{
2206 tree t
; /* the call_expr */
2207 int n
; /* argument count */
2208 int i
; /* next argument index */
2211 struct const_call_expr_arg_iterator
{
2212 const_tree t
; /* the call_expr */
2213 int n
; /* argument count */
2214 int i
; /* next argument index */
2217 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2218 function, and flags. */
2219 struct GTY(()) builtin_info_type
{
2221 /* Whether the user can use <xxx> instead of explicitly using calls
2222 to __builtin_<xxx>. */
2223 unsigned implicit_p
: 1;
2224 /* Whether the user has provided a declaration of <xxx>. */
2225 unsigned declared_p
: 1;
2228 /* Information about a _FloatN or _FloatNx type that may be
2230 struct floatn_type_info
{
2231 /* The number N in the type name. */
2233 /* Whether it is an extended type _FloatNx (true) or an interchange
2239 /*---------------------------------------------------------------------------
2241 ---------------------------------------------------------------------------*/
2242 /* Matrix describing the structures contained in a given tree code. */
2243 extern bool tree_contains_struct
[MAX_TREE_CODES
][64];
2245 /* Class of tree given its code. */
2246 extern const enum tree_code_class tree_code_type
[];
2248 /* Each tree code class has an associated string representation.
2249 These must correspond to the tree_code_class entries. */
2250 extern const char *const tree_code_class_strings
[];
2252 /* Number of argument-words in each kind of tree-node. */
2253 extern const unsigned char tree_code_length
[];
2255 /* Vector of all alias pairs for global symbols. */
2256 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
2258 /* Names of all the built_in classes. */
2259 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
2261 /* Names of all the built_in functions. */
2262 extern const char * built_in_names
[(int) END_BUILTINS
];
2264 /* Number of operands and names for each OMP_CLAUSE node. */
2265 extern unsigned const char omp_clause_num_ops
[];
2266 extern const char * const omp_clause_code_name
[];
2268 /* A vector of all translation-units. */
2269 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
2271 /* Vector of standard trees used by the C compiler. */
2272 extern GTY(()) tree global_trees
[TI_MAX
];
2274 /* The standard C integer types. Use integer_type_kind to index into
2276 extern GTY(()) tree integer_types
[itk_none
];
2278 /* Types used to represent sizes. */
2279 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
2281 /* Arrays for keeping track of tree node statistics. */
2282 extern uint64_t tree_node_counts
[];
2283 extern uint64_t tree_node_sizes
[];
2285 /* True if we are in gimple form and the actions of the folders need to
2286 be restricted. False if we are not in gimple form and folding is not
2287 restricted to creating gimple expressions. */
2288 extern bool in_gimple_form
;
2290 /* Functional interface to the builtin functions. */
2291 extern GTY(()) builtin_info_type builtin_info
[(int)END_BUILTINS
];
2293 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2294 extern unsigned int maximum_field_alignment
;
2296 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2297 extern GTY(()) tree current_function_decl
;
2299 /* Nonzero means a FUNC_BEGIN label was emitted. */
2300 extern GTY(()) const char * current_function_func_begin_label
;
2302 /* Information about the _FloatN and _FloatNx types. */
2303 extern const floatn_type_info floatn_nx_types
[NUM_FLOATN_NX_TYPES
];
2305 #endif // GCC_TREE_CORE_H