1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2013 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
26 #include "statistics.h"
28 #include "double-int.h"
30 #include "fixed-value.h"
35 /* This file contains all the data structures that define the 'tree' type.
36 There are no accessor macros nor functions in this file. Only the
37 basic data structures, extern declarations and type definitions. */
39 /*---------------------------------------------------------------------------
40 Forward type declarations. Mostly to avoid including unnecessary headers
41 ---------------------------------------------------------------------------*/
46 struct range_info_def
;
51 /*---------------------------------------------------------------------------
53 ---------------------------------------------------------------------------*/
54 /* Nonzero if this is a call to a function whose return value depends
55 solely on its arguments, has no side effects, and does not read
56 global memory. This corresponds to TREE_READONLY for function
58 #define ECF_CONST (1 << 0)
60 /* Nonzero if this is a call to "pure" function (like const function,
61 but may read memory. This corresponds to DECL_PURE_P for function
63 #define ECF_PURE (1 << 1)
65 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no
66 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P
68 #define ECF_LOOPING_CONST_OR_PURE (1 << 2)
70 /* Nonzero if this call will never return. */
71 #define ECF_NORETURN (1 << 3)
73 /* Nonzero if this is a call to malloc or a related function. */
74 #define ECF_MALLOC (1 << 4)
76 /* Nonzero if it is plausible that this is a call to alloca. */
77 #define ECF_MAY_BE_ALLOCA (1 << 5)
79 /* Nonzero if this is a call to a function that won't throw an exception. */
80 #define ECF_NOTHROW (1 << 6)
82 /* Nonzero if this is a call to setjmp or a related function. */
83 #define ECF_RETURNS_TWICE (1 << 7)
85 /* Nonzero if this call replaces the current stack frame. */
86 #define ECF_SIBCALL (1 << 8)
88 /* Function does not read or write memory (but may have side effects, so
89 it does not necessarily fit ECF_CONST). */
90 #define ECF_NOVOPS (1 << 9)
92 /* The function does not lead to calls within current function unit. */
93 #define ECF_LEAF (1 << 10)
95 /* Nonzero if this call does not affect transactions. */
96 #define ECF_TM_PURE (1 << 11)
98 /* Nonzero if this call is into the transaction runtime library. */
99 #define ECF_TM_BUILTIN (1 << 12)
101 /* Call argument flags. */
102 /* Nonzero if the argument is not dereferenced recursively, thus only
103 directly reachable memory is read or written. */
104 #define EAF_DIRECT (1 << 0)
106 /* Nonzero if memory reached by the argument is not clobbered. */
107 #define EAF_NOCLOBBER (1 << 1)
109 /* Nonzero if the argument does not escape. */
110 #define EAF_NOESCAPE (1 << 2)
112 /* Nonzero if the argument is not used by the function. */
113 #define EAF_UNUSED (1 << 3)
115 /* Call return flags. */
116 /* Mask for the argument number that is returned. Lower two bits of
117 the return flags, encodes argument slots zero to three. */
118 #define ERF_RETURN_ARG_MASK (3)
120 /* Nonzero if the return value is equal to the argument number
121 flags & ERF_RETURN_ARG_MASK. */
122 #define ERF_RETURNS_ARG (1 << 2)
124 /* Nonzero if the return value does not alias with anything. Functions
125 with the malloc attribute have this set on their return value. */
126 #define ERF_NOALIAS (1 << 3)
129 /*---------------------------------------------------------------------------
131 ---------------------------------------------------------------------------*/
132 /* Codes of tree nodes. */
133 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
134 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
137 #include "all-tree.def"
142 #undef END_OF_BASE_TREE_CODES
144 /* Number of language-independent tree codes. */
145 #define NUM_TREE_CODES \
146 ((int) LAST_AND_UNUSED_TREE_CODE)
148 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
149 (tree_contains_struct[(CODE)][(STRUCT)])
152 /* Classify which part of the compiler has defined a given builtin function.
153 Note that we assume below that this is no more than two bits. */
154 enum built_in_class
{
161 /* Last marker used for LTO stremaing of built_in_class. We can not add it
162 to the enum since we need the enumb to fit in 2 bits. */
163 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
165 /* Codes that identify the various built in functions
166 so that expand_call can identify them quickly. */
167 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
168 enum built_in_function
{
169 #include "builtins.def"
171 /* Complex division routines in libgcc. These are done via builtins
172 because emit_library_call_value can't handle complex values. */
173 BUILT_IN_COMPLEX_MUL_MIN
,
174 BUILT_IN_COMPLEX_MUL_MAX
175 = BUILT_IN_COMPLEX_MUL_MIN
176 + MAX_MODE_COMPLEX_FLOAT
177 - MIN_MODE_COMPLEX_FLOAT
,
179 BUILT_IN_COMPLEX_DIV_MIN
,
180 BUILT_IN_COMPLEX_DIV_MAX
181 = BUILT_IN_COMPLEX_DIV_MIN
182 + MAX_MODE_COMPLEX_FLOAT
183 - MIN_MODE_COMPLEX_FLOAT
,
185 /* Upper bound on non-language-specific builtins. */
190 /* Tree code classes. Each tree_code has an associated code class
191 represented by a TREE_CODE_CLASS. */
192 enum tree_code_class
{
193 tcc_exceptional
, /* An exceptional code (fits no category). */
194 tcc_constant
, /* A constant. */
195 /* Order of tcc_type and tcc_declaration is important. */
196 tcc_type
, /* A type object code. */
197 tcc_declaration
, /* A declaration (also serving as variable refs). */
198 tcc_reference
, /* A reference to storage. */
199 tcc_comparison
, /* A comparison expression. */
200 tcc_unary
, /* A unary arithmetic expression. */
201 tcc_binary
, /* A binary arithmetic expression. */
202 tcc_statement
, /* A statement expression, which have side effects
203 but usually no interesting value. */
204 tcc_vl_exp
, /* A function call or other expression with a
205 variable-length operand vector. */
206 tcc_expression
/* Any other expression. */
209 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
210 the tables omp_clause_num_ops and omp_clause_code_name. */
211 enum omp_clause_code
{
212 /* Clause zero is special-cased inside the parser
213 (c_parser_omp_variable_list). */
214 OMP_CLAUSE_ERROR
= 0,
216 /* OpenMP clause: private (variable_list). */
219 /* OpenMP clause: shared (variable_list). */
222 /* OpenMP clause: firstprivate (variable_list). */
223 OMP_CLAUSE_FIRSTPRIVATE
,
225 /* OpenMP clause: lastprivate (variable_list). */
226 OMP_CLAUSE_LASTPRIVATE
,
228 /* OpenMP clause: reduction (operator:variable_list).
229 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
230 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
231 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
233 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
234 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. */
235 OMP_CLAUSE_REDUCTION
,
237 /* OpenMP clause: copyin (variable_list). */
240 /* OpenMP clause: copyprivate (variable_list). */
241 OMP_CLAUSE_COPYPRIVATE
,
243 /* OpenMP clause: linear (variable-list[:linear-step]). */
246 /* OpenMP clause: aligned (variable-list[:alignment]). */
249 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
252 /* OpenMP clause: uniform (argument-list). */
255 /* OpenMP clause: from (variable-list). */
258 /* OpenMP clause: to (variable-list). */
261 /* OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
264 /* Internal clause: temporary for combined loops expansion. */
265 OMP_CLAUSE__LOOPTEMP_
,
267 /* OpenMP clause: if (scalar-expression). */
270 /* OpenMP clause: num_threads (integer-expression). */
271 OMP_CLAUSE_NUM_THREADS
,
273 /* OpenMP clause: schedule. */
276 /* OpenMP clause: nowait. */
279 /* OpenMP clause: ordered. */
282 /* OpenMP clause: default. */
285 /* OpenMP clause: collapse (constant-integer-expression). */
288 /* OpenMP clause: untied. */
291 /* OpenMP clause: final (scalar-expression). */
294 /* OpenMP clause: mergeable. */
295 OMP_CLAUSE_MERGEABLE
,
297 /* OpenMP clause: device (integer-expression). */
300 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
301 OMP_CLAUSE_DIST_SCHEDULE
,
303 /* OpenMP clause: inbranch. */
306 /* OpenMP clause: notinbranch. */
307 OMP_CLAUSE_NOTINBRANCH
,
309 /* OpenMP clause: num_teams(integer-expression). */
310 OMP_CLAUSE_NUM_TEAMS
,
312 /* OpenMP clause: thread_limit(integer-expression). */
313 OMP_CLAUSE_THREAD_LIMIT
,
315 /* OpenMP clause: proc_bind ({master,close,spread}). */
316 OMP_CLAUSE_PROC_BIND
,
318 /* OpenMP clause: safelen (constant-integer-expression). */
321 /* OpenMP clause: simdlen (constant-integer-expression). */
324 /* OpenMP clause: for. */
327 /* OpenMP clause: parallel. */
330 /* OpenMP clause: sections. */
333 /* OpenMP clause: taskgroup. */
334 OMP_CLAUSE_TASKGROUP
,
336 /* Internally used only clause, holding SIMD uid. */
341 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
342 enum tree_node_structure_enum
{
343 #include "treestruct.def"
348 enum omp_clause_schedule_kind
{
349 OMP_CLAUSE_SCHEDULE_STATIC
,
350 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
351 OMP_CLAUSE_SCHEDULE_GUIDED
,
352 OMP_CLAUSE_SCHEDULE_AUTO
,
353 OMP_CLAUSE_SCHEDULE_RUNTIME
356 enum omp_clause_default_kind
{
357 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
358 OMP_CLAUSE_DEFAULT_SHARED
,
359 OMP_CLAUSE_DEFAULT_NONE
,
360 OMP_CLAUSE_DEFAULT_PRIVATE
,
361 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
364 /* There is a TYPE_QUAL value for each type qualifier. They can be
365 combined by bitwise-or to form the complete set of qualifiers for a
368 TYPE_UNQUALIFIED
= 0x0,
369 TYPE_QUAL_CONST
= 0x1,
370 TYPE_QUAL_VOLATILE
= 0x2,
371 TYPE_QUAL_RESTRICT
= 0x4
374 /* Enumerate visibility settings. */
375 #ifndef SYMBOL_VISIBILITY_DEFINED
376 #define SYMBOL_VISIBILITY_DEFINED
377 enum symbol_visibility
{
379 VISIBILITY_PROTECTED
,
383 #endif // SYMBOL_VISIBILITY_DEFINED
385 /* Standard named or nameless data types of the C compiler. */
407 TI_INTEGER_MINUS_ONE
,
424 TI_COMPLEX_INTEGER_TYPE
,
425 TI_COMPLEX_FLOAT_TYPE
,
426 TI_COMPLEX_DOUBLE_TYPE
,
427 TI_COMPLEX_LONG_DOUBLE_TYPE
,
435 TI_LONG_DOUBLE_PTR_TYPE
,
445 TI_VA_LIST_GPR_COUNTER_FIELD
,
446 TI_VA_LIST_FPR_COUNTER_FIELD
,
449 TI_POINTER_SIZED_TYPE
,
451 TI_POINTER_BOUNDS_TYPE
,
456 TI_DFLOAT32_PTR_TYPE
,
457 TI_DFLOAT64_PTR_TYPE
,
458 TI_DFLOAT128_PTR_TYPE
,
471 TI_SAT_ULLFRACT_TYPE
,
487 TI_SAT_ULLACCUM_TYPE
,
533 TI_OPTIMIZATION_DEFAULT
,
534 TI_OPTIMIZATION_CURRENT
,
535 TI_TARGET_OPTION_DEFAULT
,
536 TI_TARGET_OPTION_CURRENT
,
537 TI_CURRENT_TARGET_PRAGMA
,
538 TI_CURRENT_OPTIMIZE_PRAGMA
,
543 /* An enumeration of the standard C integer types. These must be
544 ordered so that shorter types appear before longer ones, and so
545 that signed types appear before unsigned ones, for the correct
546 functioning of interpret_integer() in c-lex.c. */
547 enum integer_type_kind
{
558 itk_unsigned_long_long
,
564 /* A pointer-to-function member type looks like:
571 If __pfn is NULL, it is a NULL pointer-to-member-function.
573 (Because the vtable is always the first thing in the object, we
574 don't need its offset.) If the function is virtual, then PFN is
575 one plus twice the index into the vtable; otherwise, it is just a
576 pointer to the function.
578 Unfortunately, using the lowest bit of PFN doesn't work in
579 architectures that don't impose alignment requirements on function
580 addresses, or that use the lowest bit to tell one ISA from another,
581 for example. For such architectures, we use the lowest bit of
582 DELTA instead of the lowest bit of the PFN, and DELTA will be
584 enum ptrmemfunc_vbit_where_t
{
585 ptrmemfunc_vbit_in_pfn
,
586 ptrmemfunc_vbit_in_delta
589 /* Flags that may be passed in the third argument of decl_attributes, and
590 to handler functions for attributes. */
591 enum attribute_flags
{
592 /* The type passed in is the type of a DECL, and any attributes that
593 should be passed in again to be applied to the DECL rather than the
594 type should be returned. */
595 ATTR_FLAG_DECL_NEXT
= 1,
596 /* The type passed in is a function return type, and any attributes that
597 should be passed in again to be applied to the function type rather
598 than the return type should be returned. */
599 ATTR_FLAG_FUNCTION_NEXT
= 2,
600 /* The type passed in is an array element type, and any attributes that
601 should be passed in again to be applied to the array type rather
602 than the element type should be returned. */
603 ATTR_FLAG_ARRAY_NEXT
= 4,
604 /* The type passed in is a structure, union or enumeration type being
605 created, and should be modified in place. */
606 ATTR_FLAG_TYPE_IN_PLACE
= 8,
607 /* The attributes are being applied by default to a library function whose
608 name indicates known behavior, and should be silently ignored if they
609 are not in fact compatible with the function type. */
610 ATTR_FLAG_BUILT_IN
= 16,
611 /* A given attribute has been parsed as a C++-11 attribute. */
615 /* Types used to represent sizes. */
616 enum size_type_kind
{
617 stk_sizetype
, /* Normal representation of sizes in bytes. */
618 stk_ssizetype
, /* Signed representation of sizes in bytes. */
619 stk_bitsizetype
, /* Normal representation of sizes in bits. */
620 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
624 enum operand_equal_flag
{
627 OEP_CONSTANT_ADDRESS_OF
= 4
630 /* Enum and arrays used for tree allocation stats.
631 Keep in sync with tree.c:tree_node_kind_names. */
632 enum tree_node_kind
{
652 enum annot_expr_kind
{
653 annot_expr_ivdep_kind
657 /*---------------------------------------------------------------------------
659 ---------------------------------------------------------------------------*/
660 /* When processing aliases at the symbol table level, we need the
661 declaration of target. For this reason we need to queue aliases and
662 process them after all declarations has been produced. */
663 typedef struct GTY(()) alias_pair
{
668 /* An initialization priority. */
669 typedef unsigned short priority_type
;
671 /* The type of a callback function for walking over tree structure. */
672 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
674 /* The type of a callback function that represents a custom walk_tree. */
675 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
676 void *, struct pointer_set_t
*);
679 /*---------------------------------------------------------------------------
681 ---------------------------------------------------------------------------*/
682 /* A tree node can represent a data type, a variable, an expression
683 or a statement. Each node has a TREE_CODE which says what kind of
684 thing it represents. Some common codes are:
685 INTEGER_TYPE -- represents a type of integers.
686 ARRAY_TYPE -- represents a type of pointer.
687 VAR_DECL -- represents a declared variable.
688 INTEGER_CST -- represents a constant integer value.
689 PLUS_EXPR -- represents a sum (an expression).
691 As for the contents of a tree node: there are some fields
692 that all nodes share. Each TREE_CODE has various special-purpose
693 fields as well. The fields of a node are never accessed directly,
694 always through accessor macros. */
696 /* Every kind of tree node starts with this structure,
697 so all nodes have these fields.
699 See the accessor macros, defined below, for documentation of the
700 fields, and the table below which connects the fields and the
703 struct GTY(()) tree_base
{
704 ENUM_BITFIELD(tree_code
) code
: 16;
706 unsigned side_effects_flag
: 1;
707 unsigned constant_flag
: 1;
708 unsigned addressable_flag
: 1;
709 unsigned volatile_flag
: 1;
710 unsigned readonly_flag
: 1;
711 unsigned asm_written_flag
: 1;
712 unsigned nowarning_flag
: 1;
713 unsigned visited
: 1;
715 unsigned used_flag
: 1;
716 unsigned nothrow_flag
: 1;
717 unsigned static_flag
: 1;
718 unsigned public_flag
: 1;
719 unsigned private_flag
: 1;
720 unsigned protected_flag
: 1;
721 unsigned deprecated_flag
: 1;
722 unsigned default_def_flag
: 1;
725 /* The bits in the following structure should only be used with
726 accessor macros that constrain inputs with tree checking. */
728 unsigned lang_flag_0
: 1;
729 unsigned lang_flag_1
: 1;
730 unsigned lang_flag_2
: 1;
731 unsigned lang_flag_3
: 1;
732 unsigned lang_flag_4
: 1;
733 unsigned lang_flag_5
: 1;
734 unsigned lang_flag_6
: 1;
735 unsigned saturating_flag
: 1;
737 unsigned unsigned_flag
: 1;
738 unsigned packed_flag
: 1;
739 unsigned user_align
: 1;
740 unsigned nameless_flag
: 1;
745 /* This field is only used with TREE_TYPE nodes; the only reason it is
746 present in tree_base instead of tree_type is to save space. The size
747 of the field must be large enough to hold addr_space_t values. */
748 unsigned address_space
: 8;
750 /* The following fields are present in tree_base to save space. The
751 nodes using them do not require any of the flags above and so can
752 make better use of the 4-byte sized word. */
753 /* VEC length. This field is only used with TREE_VEC. */
755 /* SSA version number. This field is only used with SSA_NAME. */
756 unsigned int version
;
760 /* The following table lists the uses of each of the above flags and
761 for which types of nodes they are defined.
766 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
769 CONSTRUCTOR, IDENTIFIER_NODE
772 CALL_EXPR_TAILCALL in
778 PREDICT_EXPR_OUTCOME in
784 VAR_DECL, FUNCTION_DECL
787 TREE_NO_TRAMPOLINE in
793 TREE_SYMBOL_REFERENCED in
797 TARGET_EXPR, WITH_CLEANUP_EXPR
799 TRY_CATCH_IS_CLEANUP in
805 TYPE_REF_CAN_ALIAS_ALL in
806 POINTER_TYPE, REFERENCE_TYPE
814 TRANSACTION_EXPR_OUTER in
820 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
823 VAR_DECL, FUNCTION_DECL
829 CALL_EXPR_VA_ARG_PACK in
832 TYPE_CACHED_VALUES_P in
835 SAVE_EXPR_RESOLVED_P in
838 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
839 OMP_CLAUSE_LASTPRIVATE
841 OMP_CLAUSE_PRIVATE_DEBUG in
844 OMP_CLAUSE_LINEAR_NO_COPYIN in
847 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
850 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
853 TRANSACTION_EXPR_RELAXED in
861 CALL_EXPR_RETURN_SLOT_OPT in
867 OMP_PARALLEL_COMBINED in
870 OMP_ATOMIC_SEQ_CST in
873 OMP_CLAUSE_PRIVATE_OUTER_REF in
876 OMP_CLAUSE_LINEAR_NO_COPYOUT in
879 TYPE_REF_IS_RVALUE in
891 CALL_FROM_THUNK_P and
892 CALL_ALLOCA_FOR_VAR_P in
907 TREE_THIS_VOLATILE in
930 TYPE_SIZES_GIMPLIFIED in
944 VAR_DECL, FUNCTION_DECL, TYPE_DECL
945 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
948 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
968 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
970 SSA_NAME_IN_FREELIST in
979 IDENTIFIER_TRANSPARENT_ALIAS in
985 all trees (used liberally by many passes)
992 VAR_DECL_IS_VIRTUAL_OPERAND in
1006 TYPE_VECTOR_OPAQUE in
1009 SSA_NAME_IS_DEFAULT_DEF in
1012 DECL_NONLOCAL_FRAME in
1016 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1019 struct GTY(()) tree_typed
{
1020 struct tree_base base
;
1024 struct GTY(()) tree_common
{
1025 struct tree_typed typed
;
1029 struct GTY(()) tree_int_cst
{
1030 struct tree_typed typed
;
1035 struct GTY(()) tree_real_cst
{
1036 struct tree_typed typed
;
1037 struct real_value
* real_cst_ptr
;
1040 struct GTY(()) tree_fixed_cst
{
1041 struct tree_typed typed
;
1042 struct fixed_value
* fixed_cst_ptr
;
1045 struct GTY(()) tree_string
{
1046 struct tree_typed typed
;
1051 struct GTY(()) tree_complex
{
1052 struct tree_typed typed
;
1057 struct GTY(()) tree_vector
{
1058 struct tree_typed typed
;
1059 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1062 struct GTY(()) tree_identifier
{
1063 struct tree_common common
;
1064 struct ht_identifier id
;
1067 struct GTY(()) tree_list
{
1068 struct tree_common common
;
1073 struct GTY(()) tree_vec
{
1074 struct tree_common common
;
1075 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1078 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1079 element. INDEX can optionally design the position of VALUE: in arrays,
1080 it is the index where VALUE has to be placed; in structures, it is the
1081 FIELD_DECL of the member. */
1082 typedef struct GTY(()) constructor_elt_d
{
1087 struct GTY(()) tree_constructor
{
1088 struct tree_typed typed
;
1089 vec
<constructor_elt
, va_gc
> *elts
;
1092 enum omp_clause_depend_kind
1094 OMP_CLAUSE_DEPEND_IN
,
1095 OMP_CLAUSE_DEPEND_OUT
,
1096 OMP_CLAUSE_DEPEND_INOUT
1099 enum omp_clause_map_kind
1101 OMP_CLAUSE_MAP_ALLOC
,
1103 OMP_CLAUSE_MAP_FROM
,
1104 OMP_CLAUSE_MAP_TOFROM
,
1105 /* The following kind is an internal only map kind, used for pointer based
1106 array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
1107 which is implicitly POINTER_SIZE / BITS_PER_UNIT, but the bias. */
1108 OMP_CLAUSE_MAP_POINTER
1111 enum omp_clause_proc_bind_kind
1113 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1114 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1115 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1116 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1117 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1118 OMP_CLAUSE_PROC_BIND_SPREAD
= 4
1121 struct GTY(()) tree_exp
{
1122 struct tree_typed typed
;
1124 tree
GTY ((special ("tree_exp"),
1125 desc ("TREE_CODE ((tree) &%0)")))
1129 /* Immediate use linking structure. This structure is used for maintaining
1130 a doubly linked list of uses of an SSA_NAME. */
1131 typedef struct GTY(()) ssa_use_operand_d
{
1132 struct ssa_use_operand_d
* GTY((skip(""))) prev
;
1133 struct ssa_use_operand_d
* GTY((skip(""))) next
;
1134 /* Immediate uses for a given SSA name are maintained as a cyclic
1135 list. To recognize the root of this list, the location field
1136 needs to point to the original SSA name. Since statements and
1137 SSA names are of different data types, we need this union. See
1138 the explanation in struct immediate_use_iterator_d. */
1139 union { gimple stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1140 tree
*GTY((skip(""))) use
;
1141 } ssa_use_operand_t
;
1143 struct GTY(()) tree_ssa_name
{
1144 struct tree_typed typed
;
1146 /* _DECL wrapped by this SSA name. */
1149 /* Statement that defines this SSA name. */
1152 /* Value range information. */
1153 union ssa_name_info_type
{
1154 /* Pointer attributes used for alias analysis. */
1155 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1156 /* Value range attributes used for zero/sign extension elimination. */
1157 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1158 } GTY ((desc ("%1.typed.type ?" \
1159 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1161 /* Immediate uses list for this SSA_NAME. */
1162 struct ssa_use_operand_d imm_uses
;
1165 struct GTY(()) phi_arg_d
{
1166 /* imm_use MUST be the first element in struct because we do some
1167 pointer arithmetic with it. See phi_arg_index_from_use. */
1168 struct ssa_use_operand_d imm_use
;
1173 struct GTY(()) tree_omp_clause
{
1174 struct tree_common common
;
1176 enum omp_clause_code code
;
1177 union omp_clause_subcode
{
1178 enum omp_clause_default_kind default_kind
;
1179 enum omp_clause_schedule_kind schedule_kind
;
1180 enum omp_clause_depend_kind depend_kind
;
1181 enum omp_clause_map_kind map_kind
;
1182 enum omp_clause_proc_bind_kind proc_bind_kind
;
1183 enum tree_code reduction_code
;
1184 } GTY ((skip
)) subcode
;
1186 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1188 gimple_seq gimple_reduction_init
;
1189 gimple_seq gimple_reduction_merge
;
1191 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1195 struct GTY(()) tree_block
{
1196 struct tree_base base
;
1199 unsigned abstract_flag
: 1;
1200 unsigned block_num
: 31;
1205 vec
<tree
, va_gc
> *nonlocalized_vars
;
1209 tree abstract_origin
;
1210 tree fragment_origin
;
1211 tree fragment_chain
;
1214 struct GTY(()) tree_type_common
{
1215 struct tree_common common
;
1221 unsigned int precision
: 10;
1222 unsigned no_force_blk_flag
: 1;
1223 unsigned needs_constructing_flag
: 1;
1224 unsigned transparent_aggr_flag
: 1;
1225 unsigned restrict_flag
: 1;
1226 unsigned contains_placeholder_bits
: 2;
1228 ENUM_BITFIELD(machine_mode
) mode
: 8;
1230 unsigned string_flag
: 1;
1231 unsigned lang_flag_0
: 1;
1232 unsigned lang_flag_1
: 1;
1233 unsigned lang_flag_2
: 1;
1234 unsigned lang_flag_3
: 1;
1235 unsigned lang_flag_4
: 1;
1236 unsigned lang_flag_5
: 1;
1237 unsigned lang_flag_6
: 1;
1240 alias_set_type alias_set
;
1243 union tree_type_symtab
{
1244 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1245 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1246 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1247 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1255 struct GTY(()) tree_type_with_lang_specific
{
1256 struct tree_type_common common
;
1257 /* Points to a structure whose details depend on the language in use. */
1258 struct lang_type
*lang_specific
;
1261 struct GTY(()) tree_type_non_common
{
1262 struct tree_type_with_lang_specific with_lang_specific
;
1269 struct GTY (()) tree_binfo
{
1270 struct tree_common common
;
1276 vec
<tree
, va_gc
> *base_accesses
;
1282 vec
<tree
, va_gc
> base_binfos
;
1285 struct GTY(()) tree_decl_minimal
{
1286 struct tree_common common
;
1293 struct GTY(()) tree_decl_common
{
1294 struct tree_decl_minimal common
;
1297 ENUM_BITFIELD(machine_mode
) mode
: 8;
1299 unsigned nonlocal_flag
: 1;
1300 unsigned virtual_flag
: 1;
1301 unsigned ignored_flag
: 1;
1302 unsigned abstract_flag
: 1;
1303 unsigned artificial_flag
: 1;
1304 unsigned preserve_flag
: 1;
1305 unsigned debug_expr_is_from
: 1;
1307 unsigned lang_flag_0
: 1;
1308 unsigned lang_flag_1
: 1;
1309 unsigned lang_flag_2
: 1;
1310 unsigned lang_flag_3
: 1;
1311 unsigned lang_flag_4
: 1;
1312 unsigned lang_flag_5
: 1;
1313 unsigned lang_flag_6
: 1;
1314 unsigned lang_flag_7
: 1;
1315 unsigned lang_flag_8
: 1;
1317 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1318 unsigned decl_flag_0
: 1;
1319 /* In FIELD_DECL, this is DECL_BIT_FIELD
1320 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1321 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1322 unsigned decl_flag_1
: 1;
1323 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1324 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1325 DECL_HAS_VALUE_EXPR_P. */
1326 unsigned decl_flag_2
: 1;
1328 unsigned decl_flag_3
: 1;
1329 /* Logically, these two would go in a theoretical base shared by var and
1331 unsigned gimple_reg_flag
: 1;
1332 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1333 unsigned decl_by_reference_flag
: 1;
1334 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1335 unsigned decl_read_flag
: 1;
1336 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1337 unsigned decl_nonshareable_flag
: 1;
1339 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1340 unsigned int off_align
: 8;
1342 /* 24 bits unused. */
1344 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1347 /* UID for points-to sets, stable over copying from inlining. */
1348 unsigned int pt_uid
;
1353 tree abstract_origin
;
1355 /* Points to a structure whose details depend on the language in use. */
1356 struct lang_decl
*lang_specific
;
1359 struct GTY(()) tree_decl_with_rtl
{
1360 struct tree_decl_common common
;
1364 struct GTY(()) tree_field_decl
{
1365 struct tree_decl_common common
;
1368 tree bit_field_type
;
1374 struct GTY(()) tree_label_decl
{
1375 struct tree_decl_with_rtl common
;
1377 int eh_landing_pad_nr
;
1380 struct GTY(()) tree_result_decl
{
1381 struct tree_decl_with_rtl common
;
1384 struct GTY(()) tree_const_decl
{
1385 struct tree_decl_common common
;
1388 struct GTY(()) tree_parm_decl
{
1389 struct tree_decl_with_rtl common
;
1393 struct GTY(()) tree_decl_with_vis
{
1394 struct tree_decl_with_rtl common
;
1395 tree assembler_name
;
1399 /* Belong to VAR_DECL exclusively. */
1400 unsigned defer_output
: 1;
1401 unsigned hard_register
: 1;
1402 unsigned common_flag
: 1;
1403 unsigned in_text_section
: 1;
1404 unsigned in_constant_pool
: 1;
1405 unsigned dllimport_flag
: 1;
1406 /* Don't belong to VAR_DECL exclusively. */
1407 unsigned weak_flag
: 1;
1408 /* When SECTION_NAME is implied by -ffunction-section. */
1409 unsigned implicit_section_name_p
: 1;
1411 unsigned seen_in_bind_expr
: 1;
1412 unsigned comdat_flag
: 1;
1413 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1414 unsigned visibility_specified
: 1;
1415 /* Belongs to VAR_DECL exclusively. */
1416 ENUM_BITFIELD(tls_model
) tls_model
: 3;
1418 /* Belong to FUNCTION_DECL exclusively. */
1419 unsigned init_priority_p
: 1;
1420 /* Used by C++ only. Might become a generic decl flag. */
1421 unsigned shadowed_for_var_p
: 1;
1422 /* Belong to FUNCTION_DECL exclusively. */
1423 unsigned cxx_constructor
: 1;
1424 /* Belong to FUNCTION_DECL exclusively. */
1425 unsigned cxx_destructor
: 1;
1426 /* Belong to FUNCTION_DECL exclusively. */
1428 /* 11 unused bits. */
1431 struct GTY(()) tree_var_decl
{
1432 struct tree_decl_with_vis common
;
1435 struct GTY(()) tree_decl_non_common
{
1436 struct tree_decl_with_vis common
;
1437 /* C++ uses this in namespaces. */
1439 /* C++ uses this in templates. */
1441 /* Almost all FE's use this. */
1443 /* C++ uses this in namespaces and function_decls. */
1447 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1448 arguments/result/saved_tree fields by front ends. It was either inherit
1449 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1450 which seemed a bit strange. */
1452 struct GTY(()) tree_function_decl
{
1453 struct tree_decl_non_common common
;
1457 /* The personality function. Used for stack unwinding. */
1460 /* Function specific options that are used by this function. */
1461 tree function_specific_target
; /* target options */
1462 tree function_specific_optimization
; /* optimization options */
1464 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1465 DECL_FUNCTION_CODE. Otherwise unused.
1466 ??? The bitfield needs to be able to hold all target function
1468 ENUM_BITFIELD(built_in_function
) function_code
: 11;
1469 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1471 unsigned static_ctor_flag
: 1;
1472 unsigned static_dtor_flag
: 1;
1473 unsigned uninlinable
: 1;
1475 unsigned possibly_inlined
: 1;
1476 unsigned novops_flag
: 1;
1477 unsigned returns_twice_flag
: 1;
1478 unsigned malloc_flag
: 1;
1479 unsigned operator_new_flag
: 1;
1480 unsigned declared_inline_flag
: 1;
1481 unsigned regdecl_flag
: 1;
1482 unsigned no_inline_warning_flag
: 1;
1484 unsigned no_instrument_function_entry_exit
: 1;
1485 unsigned no_limit_stack
: 1;
1486 unsigned disregard_inline_limits
: 1;
1487 unsigned pure_flag
: 1;
1488 unsigned looping_const_or_pure_flag
: 1;
1489 unsigned has_debug_args_flag
: 1;
1490 unsigned tm_clone_flag
: 1;
1491 unsigned versioned_function
: 1;
1495 struct GTY(()) tree_translation_unit_decl
{
1496 struct tree_decl_common common
;
1497 /* Source language of this translation unit. Used for DWARF output. */
1498 const char * GTY((skip(""))) language
;
1499 /* TODO: Non-optimization used to build this translation unit. */
1500 /* TODO: Root of a partial DWARF tree for global types and decls. */
1503 struct GTY(()) tree_type_decl
{
1504 struct tree_decl_non_common common
;
1508 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1510 struct tree_statement_list_node
*prev
;
1511 struct tree_statement_list_node
*next
;
1515 struct GTY(()) tree_statement_list
1517 struct tree_typed typed
;
1518 struct tree_statement_list_node
*head
;
1519 struct tree_statement_list_node
*tail
;
1523 /* Optimization options used by a function. */
1525 struct GTY(()) tree_optimization_option
{
1526 struct tree_common common
;
1528 /* The optimization options used by the user. */
1529 struct cl_optimization opts
;
1531 /* Target optabs for this set of optimization options. This is of
1532 type `struct target_optabs *'. */
1533 unsigned char *GTY ((atomic
)) optabs
;
1535 /* The value of this_target_optabs against which the optabs above were
1537 struct target_optabs
*GTY ((skip
)) base_optabs
;
1540 /* Target options used by a function. */
1542 struct GTY(()) tree_target_option
{
1543 struct tree_common common
;
1545 /* The optimization options used by the user. */
1546 struct cl_target_option opts
;
1549 /* Define the overall contents of a tree node.
1550 It may be any of the structures declared above
1551 for various types of node. */
1552 union GTY ((ptr_alias (union lang_tree_node
),
1553 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1554 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1555 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1556 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1557 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1558 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1559 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1560 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1561 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1562 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1563 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1564 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1565 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1566 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1567 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1569 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1570 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1571 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1572 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1573 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1574 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1575 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1576 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1577 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1578 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1579 translation_unit_decl
;
1580 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1581 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1582 type_with_lang_specific
;
1583 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1585 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1586 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1587 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1588 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1589 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1590 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1591 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1592 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1593 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1594 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1595 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1598 /* Structure describing an attribute and a function to handle it. */
1599 struct attribute_spec
{
1600 /* The name of the attribute (without any leading or trailing __),
1601 or NULL to mark the end of a table of attributes. */
1603 /* The minimum length of the list of arguments of the attribute. */
1605 /* The maximum length of the list of arguments of the attribute
1606 (-1 for no maximum). */
1608 /* Whether this attribute requires a DECL. If it does, it will be passed
1609 from types of DECLs, function return types and array element types to
1610 the DECLs, function types and array types respectively; but when
1611 applied to a type in any other circumstances, it will be ignored with
1612 a warning. (If greater control is desired for a given attribute,
1613 this should be false, and the flags argument to the handler may be
1614 used to gain greater control in that case.) */
1616 /* Whether this attribute requires a type. If it does, it will be passed
1617 from a DECL to the type of that DECL. */
1619 /* Whether this attribute requires a function (or method) type. If it does,
1620 it will be passed from a function pointer type to the target type,
1621 and from a function return type (which is not itself a function
1622 pointer type) to the function type. */
1623 bool function_type_required
;
1624 /* Function to handle this attribute. NODE points to the node to which
1625 the attribute is to be applied. If a DECL, it should be modified in
1626 place; if a TYPE, a copy should be created. NAME is the name of the
1627 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1628 of the arguments (which may be NULL). FLAGS gives further information
1629 about the context of the attribute. Afterwards, the attributes will
1630 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1631 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1632 as well as in any other cases when the attributes should not be added
1633 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1634 applied to another type or DECL later may be returned;
1635 otherwise the return value should be NULL_TREE. This pointer may be
1636 NULL if no special handling is required beyond the checks implied
1637 by the rest of this structure. */
1638 tree (*handler
) (tree
*node
, tree name
, tree args
,
1639 int flags
, bool *no_add_attrs
);
1640 /* Specifies if attribute affects type's identity. */
1641 bool affects_type_identity
;
1644 /* These functions allow a front-end to perform a manual layout of a
1645 RECORD_TYPE. (For instance, if the placement of subsequent fields
1646 depends on the placement of fields so far.) Begin by calling
1647 start_record_layout. Then, call place_field for each of the
1648 fields. Then, call finish_record_layout. See layout_type for the
1649 default way in which these functions are used. */
1650 typedef struct record_layout_info_s
{
1651 /* The RECORD_TYPE that we are laying out. */
1653 /* The offset into the record so far, in bytes, not including bits in
1656 /* The last known alignment of SIZE. */
1657 unsigned int offset_align
;
1658 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1660 /* The alignment of the record so far, in bits. */
1661 unsigned int record_align
;
1662 /* The alignment of the record so far, ignoring #pragma pack and
1663 __attribute__ ((packed)), in bits. */
1664 unsigned int unpacked_align
;
1665 /* The previous field laid out. */
1667 /* The static variables (i.e., class variables, as opposed to
1668 instance variables) encountered in T. */
1669 vec
<tree
, va_gc
> *pending_statics
;
1670 /* Bits remaining in the current alignment group */
1671 int remaining_in_alignment
;
1672 /* True if we've seen a packed field that didn't have normal
1673 alignment anyway. */
1674 int packed_maybe_necessary
;
1675 } *record_layout_info
;
1677 /* Iterator for going through the function arguments. */
1678 struct function_args_iterator
{
1679 tree next
; /* TREE_LIST pointing to the next argument */
1682 /* Structures to map from a tree to another tree. */
1683 struct GTY(()) tree_map_base
{
1687 /* Map from a tree to another tree. */
1689 struct GTY(()) tree_map
{
1690 struct tree_map_base base
;
1695 /* Map from a decl tree to another tree. */
1696 struct GTY(()) tree_decl_map
{
1697 struct tree_map_base base
;
1701 /* Map from a tree to an int. */
1702 struct GTY(()) tree_int_map
{
1703 struct tree_map_base base
;
1707 /* Map from a tree to initialization/finalization priorities. */
1708 struct GTY(()) tree_priority_map
{
1709 struct tree_map_base base
;
1714 /* Map from a decl tree to a tree vector. */
1715 struct GTY(()) tree_vec_map
{
1716 struct tree_map_base base
;
1717 vec
<tree
, va_gc
> *to
;
1720 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1721 have to go towards the end of tree.h so that union tree_node is fully
1722 defined by this point. */
1724 /* Structure containing iterator state. */
1725 struct call_expr_arg_iterator
{
1726 tree t
; /* the call_expr */
1727 int n
; /* argument count */
1728 int i
; /* next argument index */
1731 struct const_call_expr_arg_iterator
{
1732 const_tree t
; /* the call_expr */
1733 int n
; /* argument count */
1734 int i
; /* next argument index */
1737 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1738 function, and a flag that says if the function is available implicitly, or
1739 whether the user has to code explicit calls to __builtin_<xxx>. */
1740 struct GTY(()) builtin_info_type
{
1741 tree decl
[(int)END_BUILTINS
];
1742 bool implicit_p
[(int)END_BUILTINS
];
1746 /*---------------------------------------------------------------------------
1748 ---------------------------------------------------------------------------*/
1749 /* Matrix describing the structures contained in a given tree code. */
1750 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1752 /* Class of tree given its code. */
1753 extern const enum tree_code_class tree_code_type
[];
1755 /* Each tree code class has an associated string representation.
1756 These must correspond to the tree_code_class entries. */
1757 extern const char *const tree_code_class_strings
[];
1759 /* Number of argument-words in each kind of tree-node. */
1760 extern const unsigned char tree_code_length
[];
1762 /* Vector of all alias pairs for global symbols. */
1763 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1765 /* Names of all the built_in classes. */
1766 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1768 /* Names of all the built_in functions. */
1769 extern const char * built_in_names
[(int) END_BUILTINS
];
1771 /* Number of operands and names for each OMP_CLAUSE node. */
1772 extern unsigned const char omp_clause_num_ops
[];
1773 extern const char * const omp_clause_code_name
[];
1775 /* A vector of all translation-units. */
1776 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
1778 /* Vector of standard trees used by the C compiler. */
1779 extern GTY(()) tree global_trees
[TI_MAX
];
1781 /* The standard C integer types. Use integer_type_kind to index into
1783 extern GTY(()) tree integer_types
[itk_none
];
1785 /* Types used to represent sizes. */
1786 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
1788 /* Arrays for keeping track of tree node statistics. */
1789 extern int tree_node_counts
[];
1790 extern int tree_node_sizes
[];
1792 /* True if we are in gimple form and the actions of the folders need to
1793 be restricted. False if we are not in gimple form and folding is not
1794 restricted to creating gimple expressions. */
1795 extern bool in_gimple_form
;
1797 /* Functional interface to the builtin functions. */
1798 extern GTY(()) builtin_info_type builtin_info
;
1800 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
1801 extern unsigned int maximum_field_alignment
;
1803 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
1804 Zero means allow extended lvalues. */
1805 extern int pedantic_lvalues
;
1807 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
1808 extern GTY(()) tree current_function_decl
;
1810 /* Nonzero means a FUNC_BEGIN label was emitted. */
1811 extern GTY(()) const char * current_function_func_begin_label
;
1813 #endif // GCC_TREE_CORE_H