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,
373 TYPE_QUAL_SHARED
= 0x10,
374 TYPE_QUAL_RELAXED
= 0x20,
375 TYPE_QUAL_STRICT
= 0x40
378 /* Enumerate visibility settings. */
379 #ifndef SYMBOL_VISIBILITY_DEFINED
380 #define SYMBOL_VISIBILITY_DEFINED
381 enum symbol_visibility
{
383 VISIBILITY_PROTECTED
,
387 #endif // SYMBOL_VISIBILITY_DEFINED
389 /* Standard named or nameless data types of the C compiler. */
411 TI_INTEGER_MINUS_ONE
,
428 TI_COMPLEX_INTEGER_TYPE
,
429 TI_COMPLEX_FLOAT_TYPE
,
430 TI_COMPLEX_DOUBLE_TYPE
,
431 TI_COMPLEX_LONG_DOUBLE_TYPE
,
439 TI_LONG_DOUBLE_PTR_TYPE
,
449 TI_VA_LIST_GPR_COUNTER_FIELD
,
450 TI_VA_LIST_FPR_COUNTER_FIELD
,
453 TI_POINTER_SIZED_TYPE
,
455 TI_POINTER_BOUNDS_TYPE
,
459 TI_UPC_CHAR_PTS_TYPE
,
474 TI_DFLOAT32_PTR_TYPE
,
475 TI_DFLOAT64_PTR_TYPE
,
476 TI_DFLOAT128_PTR_TYPE
,
489 TI_SAT_ULLFRACT_TYPE
,
505 TI_SAT_ULLACCUM_TYPE
,
551 TI_OPTIMIZATION_DEFAULT
,
552 TI_OPTIMIZATION_CURRENT
,
553 TI_TARGET_OPTION_DEFAULT
,
554 TI_TARGET_OPTION_CURRENT
,
555 TI_CURRENT_TARGET_PRAGMA
,
556 TI_CURRENT_OPTIMIZE_PRAGMA
,
561 /* An enumeration of the standard C integer types. These must be
562 ordered so that shorter types appear before longer ones, and so
563 that signed types appear before unsigned ones, for the correct
564 functioning of interpret_integer() in c-lex.c. */
565 enum integer_type_kind
{
576 itk_unsigned_long_long
,
582 /* A pointer-to-function member type looks like:
589 If __pfn is NULL, it is a NULL pointer-to-member-function.
591 (Because the vtable is always the first thing in the object, we
592 don't need its offset.) If the function is virtual, then PFN is
593 one plus twice the index into the vtable; otherwise, it is just a
594 pointer to the function.
596 Unfortunately, using the lowest bit of PFN doesn't work in
597 architectures that don't impose alignment requirements on function
598 addresses, or that use the lowest bit to tell one ISA from another,
599 for example. For such architectures, we use the lowest bit of
600 DELTA instead of the lowest bit of the PFN, and DELTA will be
602 enum ptrmemfunc_vbit_where_t
{
603 ptrmemfunc_vbit_in_pfn
,
604 ptrmemfunc_vbit_in_delta
607 /* Flags that may be passed in the third argument of decl_attributes, and
608 to handler functions for attributes. */
609 enum attribute_flags
{
610 /* The type passed in is the type of a DECL, and any attributes that
611 should be passed in again to be applied to the DECL rather than the
612 type should be returned. */
613 ATTR_FLAG_DECL_NEXT
= 1,
614 /* The type passed in is a function return type, and any attributes that
615 should be passed in again to be applied to the function type rather
616 than the return type should be returned. */
617 ATTR_FLAG_FUNCTION_NEXT
= 2,
618 /* The type passed in is an array element type, and any attributes that
619 should be passed in again to be applied to the array type rather
620 than the element type should be returned. */
621 ATTR_FLAG_ARRAY_NEXT
= 4,
622 /* The type passed in is a structure, union or enumeration type being
623 created, and should be modified in place. */
624 ATTR_FLAG_TYPE_IN_PLACE
= 8,
625 /* The attributes are being applied by default to a library function whose
626 name indicates known behavior, and should be silently ignored if they
627 are not in fact compatible with the function type. */
628 ATTR_FLAG_BUILT_IN
= 16,
629 /* A given attribute has been parsed as a C++-11 attribute. */
633 /* Types used to represent sizes. */
634 enum size_type_kind
{
635 stk_sizetype
, /* Normal representation of sizes in bytes. */
636 stk_ssizetype
, /* Signed representation of sizes in bytes. */
637 stk_bitsizetype
, /* Normal representation of sizes in bits. */
638 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
642 enum operand_equal_flag
{
645 OEP_CONSTANT_ADDRESS_OF
= 4
648 /* Enum and arrays used for tree allocation stats.
649 Keep in sync with tree.c:tree_node_kind_names. */
650 enum tree_node_kind
{
670 enum annot_expr_kind
{
671 annot_expr_ivdep_kind
675 /*---------------------------------------------------------------------------
677 ---------------------------------------------------------------------------*/
678 /* When processing aliases at the symbol table level, we need the
679 declaration of target. For this reason we need to queue aliases and
680 process them after all declarations has been produced. */
681 typedef struct GTY(()) alias_pair
{
686 /* An initialization priority. */
687 typedef unsigned short priority_type
;
689 /* The type of a callback function for walking over tree structure. */
690 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
692 /* The type of a callback function that represents a custom walk_tree. */
693 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
694 void *, struct pointer_set_t
*);
697 /*---------------------------------------------------------------------------
699 ---------------------------------------------------------------------------*/
700 /* A tree node can represent a data type, a variable, an expression
701 or a statement. Each node has a TREE_CODE which says what kind of
702 thing it represents. Some common codes are:
703 INTEGER_TYPE -- represents a type of integers.
704 ARRAY_TYPE -- represents a type of pointer.
705 VAR_DECL -- represents a declared variable.
706 INTEGER_CST -- represents a constant integer value.
707 PLUS_EXPR -- represents a sum (an expression).
709 As for the contents of a tree node: there are some fields
710 that all nodes share. Each TREE_CODE has various special-purpose
711 fields as well. The fields of a node are never accessed directly,
712 always through accessor macros. */
714 /* Every kind of tree node starts with this structure,
715 so all nodes have these fields.
717 See the accessor macros, defined below, for documentation of the
718 fields, and the table below which connects the fields and the
721 struct GTY(()) tree_base
{
722 ENUM_BITFIELD(tree_code
) code
: 16;
724 unsigned side_effects_flag
: 1;
725 unsigned constant_flag
: 1;
726 unsigned addressable_flag
: 1;
727 unsigned volatile_flag
: 1;
728 unsigned readonly_flag
: 1;
729 unsigned asm_written_flag
: 1;
730 unsigned nowarning_flag
: 1;
731 unsigned visited
: 1;
733 unsigned used_flag
: 1;
734 unsigned nothrow_flag
: 1;
735 unsigned static_flag
: 1;
736 unsigned public_flag
: 1;
737 unsigned private_flag
: 1;
738 unsigned protected_flag
: 1;
739 unsigned deprecated_flag
: 1;
740 unsigned default_def_flag
: 1;
743 /* The bits in the following structure should only be used with
744 accessor macros that constrain inputs with tree checking. */
746 unsigned lang_flag_0
: 1;
747 unsigned lang_flag_1
: 1;
748 unsigned lang_flag_2
: 1;
749 unsigned lang_flag_3
: 1;
750 unsigned lang_flag_4
: 1;
751 unsigned lang_flag_5
: 1;
752 unsigned lang_flag_6
: 1;
753 unsigned saturating_flag
: 1;
755 unsigned unsigned_flag
: 1;
756 unsigned packed_flag
: 1;
757 unsigned user_align
: 1;
758 unsigned nameless_flag
: 1;
759 unsigned upc_shared_flag
: 1;
760 unsigned upc_strict_flag
: 1;
761 unsigned upc_relaxed_flag
: 1;
766 /* This field is only used with TREE_TYPE nodes; the only reason it is
767 present in tree_base instead of tree_type is to save space. The size
768 of the field must be large enough to hold addr_space_t values. */
769 unsigned address_space
: 8;
771 /* The following fields are present in tree_base to save space. The
772 nodes using them do not require any of the flags above and so can
773 make better use of the 4-byte sized word. */
774 /* VEC length. This field is only used with TREE_VEC. */
776 /* SSA version number. This field is only used with SSA_NAME. */
777 unsigned int version
;
781 /* The following table lists the uses of each of the above flags and
782 for which types of nodes they are defined.
787 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
790 CONSTRUCTOR, IDENTIFIER_NODE
793 CALL_EXPR_TAILCALL in
799 PREDICT_EXPR_OUTCOME in
805 VAR_DECL, FUNCTION_DECL
808 TREE_NO_TRAMPOLINE in
814 TREE_SYMBOL_REFERENCED in
818 TARGET_EXPR, WITH_CLEANUP_EXPR
820 TRY_CATCH_IS_CLEANUP in
826 TYPE_REF_CAN_ALIAS_ALL in
827 POINTER_TYPE, REFERENCE_TYPE
835 TRANSACTION_EXPR_OUTER in
841 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
844 VAR_DECL, FUNCTION_DECL
850 CALL_EXPR_VA_ARG_PACK in
853 TYPE_CACHED_VALUES_P in
856 SAVE_EXPR_RESOLVED_P in
859 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
860 OMP_CLAUSE_LASTPRIVATE
862 OMP_CLAUSE_PRIVATE_DEBUG in
865 OMP_CLAUSE_LINEAR_NO_COPYIN in
868 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
871 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
874 TRANSACTION_EXPR_RELAXED in
882 CALL_EXPR_RETURN_SLOT_OPT in
888 OMP_PARALLEL_COMBINED in
891 OMP_ATOMIC_SEQ_CST in
894 OMP_CLAUSE_PRIVATE_OUTER_REF in
897 OMP_CLAUSE_LINEAR_NO_COPYOUT in
900 TYPE_REF_IS_RVALUE in
912 CALL_FROM_THUNK_P and
913 CALL_ALLOCA_FOR_VAR_P in
928 TREE_THIS_VOLATILE in
951 TYPE_SIZES_GIMPLIFIED in
965 VAR_DECL, FUNCTION_DECL, TYPE_DECL
966 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
969 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
989 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
991 SSA_NAME_IN_FREELIST in
1000 IDENTIFIER_TRANSPARENT_ALIAS in
1006 all trees (used liberally by many passes)
1013 VAR_DECL_IS_VIRTUAL_OPERAND in
1027 TYPE_VECTOR_OPAQUE in
1030 SSA_NAME_IS_DEFAULT_DEF in
1033 DECL_NONLOCAL_FRAME in
1037 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1040 struct GTY(()) tree_typed
{
1041 struct tree_base base
;
1045 struct GTY(()) tree_common
{
1046 struct tree_typed typed
;
1050 struct GTY(()) tree_int_cst
{
1051 struct tree_typed typed
;
1056 struct GTY(()) tree_real_cst
{
1057 struct tree_typed typed
;
1058 struct real_value
* real_cst_ptr
;
1061 struct GTY(()) tree_fixed_cst
{
1062 struct tree_typed typed
;
1063 struct fixed_value
* fixed_cst_ptr
;
1066 struct GTY(()) tree_string
{
1067 struct tree_typed typed
;
1072 struct GTY(()) tree_complex
{
1073 struct tree_typed typed
;
1078 struct GTY(()) tree_vector
{
1079 struct tree_typed typed
;
1080 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1083 struct GTY(()) tree_identifier
{
1084 struct tree_common common
;
1085 struct ht_identifier id
;
1088 struct GTY(()) tree_list
{
1089 struct tree_common common
;
1094 struct GTY(()) tree_vec
{
1095 struct tree_common common
;
1096 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1099 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1100 element. INDEX can optionally design the position of VALUE: in arrays,
1101 it is the index where VALUE has to be placed; in structures, it is the
1102 FIELD_DECL of the member. */
1103 typedef struct GTY(()) constructor_elt_d
{
1108 struct GTY(()) tree_constructor
{
1109 struct tree_typed typed
;
1110 vec
<constructor_elt
, va_gc
> *elts
;
1113 enum omp_clause_depend_kind
1115 OMP_CLAUSE_DEPEND_IN
,
1116 OMP_CLAUSE_DEPEND_OUT
,
1117 OMP_CLAUSE_DEPEND_INOUT
1120 enum omp_clause_map_kind
1122 OMP_CLAUSE_MAP_ALLOC
,
1124 OMP_CLAUSE_MAP_FROM
,
1125 OMP_CLAUSE_MAP_TOFROM
,
1126 /* The following kind is an internal only map kind, used for pointer based
1127 array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
1128 which is implicitly POINTER_SIZE / BITS_PER_UNIT, but the bias. */
1129 OMP_CLAUSE_MAP_POINTER
1132 enum omp_clause_proc_bind_kind
1134 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1135 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1136 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1137 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1138 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1139 OMP_CLAUSE_PROC_BIND_SPREAD
= 4
1142 struct GTY(()) tree_exp
{
1143 struct tree_typed typed
;
1145 tree
GTY ((special ("tree_exp"),
1146 desc ("TREE_CODE ((tree) &%0)")))
1150 /* Immediate use linking structure. This structure is used for maintaining
1151 a doubly linked list of uses of an SSA_NAME. */
1152 typedef struct GTY(()) ssa_use_operand_d
{
1153 struct ssa_use_operand_d
* GTY((skip(""))) prev
;
1154 struct ssa_use_operand_d
* GTY((skip(""))) next
;
1155 /* Immediate uses for a given SSA name are maintained as a cyclic
1156 list. To recognize the root of this list, the location field
1157 needs to point to the original SSA name. Since statements and
1158 SSA names are of different data types, we need this union. See
1159 the explanation in struct immediate_use_iterator_d. */
1160 union { gimple stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1161 tree
*GTY((skip(""))) use
;
1162 } ssa_use_operand_t
;
1164 struct GTY(()) tree_ssa_name
{
1165 struct tree_typed typed
;
1167 /* _DECL wrapped by this SSA name. */
1170 /* Statement that defines this SSA name. */
1173 /* Value range information. */
1174 union ssa_name_info_type
{
1175 /* Pointer attributes used for alias analysis. */
1176 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1177 /* Value range attributes used for zero/sign extension elimination. */
1178 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1179 } GTY ((desc ("%1.typed.type ?" \
1180 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1182 /* Immediate uses list for this SSA_NAME. */
1183 struct ssa_use_operand_d imm_uses
;
1186 struct GTY(()) phi_arg_d
{
1187 /* imm_use MUST be the first element in struct because we do some
1188 pointer arithmetic with it. See phi_arg_index_from_use. */
1189 struct ssa_use_operand_d imm_use
;
1194 struct GTY(()) tree_omp_clause
{
1195 struct tree_common common
;
1197 enum omp_clause_code code
;
1198 union omp_clause_subcode
{
1199 enum omp_clause_default_kind default_kind
;
1200 enum omp_clause_schedule_kind schedule_kind
;
1201 enum omp_clause_depend_kind depend_kind
;
1202 enum omp_clause_map_kind map_kind
;
1203 enum omp_clause_proc_bind_kind proc_bind_kind
;
1204 enum tree_code reduction_code
;
1205 } GTY ((skip
)) subcode
;
1207 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1209 gimple_seq gimple_reduction_init
;
1210 gimple_seq gimple_reduction_merge
;
1212 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1216 struct GTY(()) tree_block
{
1217 struct tree_base base
;
1220 unsigned abstract_flag
: 1;
1221 unsigned block_num
: 31;
1226 vec
<tree
, va_gc
> *nonlocalized_vars
;
1230 tree abstract_origin
;
1231 tree fragment_origin
;
1232 tree fragment_chain
;
1235 struct GTY(()) tree_type_common
{
1236 struct tree_common common
;
1242 unsigned int precision
: 10;
1243 unsigned no_force_blk_flag
: 1;
1244 unsigned needs_constructing_flag
: 1;
1245 unsigned transparent_aggr_flag
: 1;
1246 unsigned restrict_flag
: 1;
1247 unsigned contains_placeholder_bits
: 2;
1249 ENUM_BITFIELD(machine_mode
) mode
: 8;
1251 unsigned string_flag
: 1;
1252 unsigned lang_flag_0
: 1;
1253 unsigned lang_flag_1
: 1;
1254 unsigned lang_flag_2
: 1;
1255 unsigned lang_flag_3
: 1;
1256 unsigned lang_flag_4
: 1;
1257 unsigned lang_flag_5
: 1;
1258 unsigned lang_flag_6
: 1;
1261 alias_set_type alias_set
;
1264 union tree_type_symtab
{
1265 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1266 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1267 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1268 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1276 struct GTY(()) tree_type_with_lang_specific
{
1277 struct tree_type_common common
;
1278 /* Points to a structure whose details depend on the language in use. */
1279 struct lang_type
*lang_specific
;
1282 struct GTY(()) tree_type_non_common
{
1283 struct tree_type_with_lang_specific with_lang_specific
;
1290 struct GTY (()) tree_binfo
{
1291 struct tree_common common
;
1297 vec
<tree
, va_gc
> *base_accesses
;
1303 vec
<tree
, va_gc
> base_binfos
;
1306 struct GTY(()) tree_decl_minimal
{
1307 struct tree_common common
;
1314 struct GTY(()) tree_decl_common
{
1315 struct tree_decl_minimal common
;
1318 ENUM_BITFIELD(machine_mode
) mode
: 8;
1320 unsigned nonlocal_flag
: 1;
1321 unsigned virtual_flag
: 1;
1322 unsigned ignored_flag
: 1;
1323 unsigned abstract_flag
: 1;
1324 unsigned artificial_flag
: 1;
1325 unsigned preserve_flag
: 1;
1326 unsigned debug_expr_is_from
: 1;
1328 unsigned lang_flag_0
: 1;
1329 unsigned lang_flag_1
: 1;
1330 unsigned lang_flag_2
: 1;
1331 unsigned lang_flag_3
: 1;
1332 unsigned lang_flag_4
: 1;
1333 unsigned lang_flag_5
: 1;
1334 unsigned lang_flag_6
: 1;
1335 unsigned lang_flag_7
: 1;
1336 unsigned lang_flag_8
: 1;
1338 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1339 unsigned decl_flag_0
: 1;
1340 /* In FIELD_DECL, this is DECL_BIT_FIELD
1341 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1342 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1343 unsigned decl_flag_1
: 1;
1344 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1345 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1346 DECL_HAS_VALUE_EXPR_P. */
1347 unsigned decl_flag_2
: 1;
1349 unsigned decl_flag_3
: 1;
1350 /* Logically, these two would go in a theoretical base shared by var and
1352 unsigned gimple_reg_flag
: 1;
1353 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1354 unsigned decl_by_reference_flag
: 1;
1355 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1356 unsigned decl_read_flag
: 1;
1357 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1358 unsigned decl_nonshareable_flag
: 1;
1360 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1361 unsigned int off_align
: 8;
1363 /* 24 bits unused. */
1365 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1368 /* UID for points-to sets, stable over copying from inlining. */
1369 unsigned int pt_uid
;
1374 tree abstract_origin
;
1376 /* Points to a structure whose details depend on the language in use. */
1377 struct lang_decl
*lang_specific
;
1380 struct GTY(()) tree_decl_with_rtl
{
1381 struct tree_decl_common common
;
1385 struct GTY(()) tree_field_decl
{
1386 struct tree_decl_common common
;
1389 tree bit_field_type
;
1395 struct GTY(()) tree_label_decl
{
1396 struct tree_decl_with_rtl common
;
1398 int eh_landing_pad_nr
;
1401 struct GTY(()) tree_result_decl
{
1402 struct tree_decl_with_rtl common
;
1405 struct GTY(()) tree_const_decl
{
1406 struct tree_decl_common common
;
1409 struct GTY(()) tree_parm_decl
{
1410 struct tree_decl_with_rtl common
;
1414 struct GTY(()) tree_decl_with_vis
{
1415 struct tree_decl_with_rtl common
;
1416 tree assembler_name
;
1420 /* Belong to VAR_DECL exclusively. */
1421 unsigned defer_output
: 1;
1422 unsigned hard_register
: 1;
1423 unsigned common_flag
: 1;
1424 unsigned in_text_section
: 1;
1425 unsigned in_constant_pool
: 1;
1426 unsigned dllimport_flag
: 1;
1427 /* Don't belong to VAR_DECL exclusively. */
1428 unsigned weak_flag
: 1;
1429 /* When SECTION_NAME is implied by -ffunction-section. */
1430 unsigned implicit_section_name_p
: 1;
1432 unsigned seen_in_bind_expr
: 1;
1433 unsigned comdat_flag
: 1;
1434 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1435 unsigned visibility_specified
: 1;
1436 /* Belongs to VAR_DECL exclusively. */
1437 ENUM_BITFIELD(tls_model
) tls_model
: 3;
1439 /* Belong to FUNCTION_DECL exclusively. */
1440 unsigned init_priority_p
: 1;
1441 /* Used by C++ only. Might become a generic decl flag. */
1442 unsigned shadowed_for_var_p
: 1;
1443 /* Belong to FUNCTION_DECL exclusively. */
1444 unsigned cxx_constructor
: 1;
1445 /* Belong to FUNCTION_DECL exclusively. */
1446 unsigned cxx_destructor
: 1;
1447 /* Belong to FUNCTION_DECL exclusively. */
1449 /* 11 unused bits. */
1452 struct GTY(()) tree_var_decl
{
1453 struct tree_decl_with_vis common
;
1456 struct GTY(()) tree_decl_non_common
{
1457 struct tree_decl_with_vis common
;
1458 /* C++ uses this in namespaces. */
1460 /* C++ uses this in templates. */
1462 /* Almost all FE's use this. */
1464 /* C++ uses this in namespaces and function_decls. */
1468 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1469 arguments/result/saved_tree fields by front ends. It was either inherit
1470 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1471 which seemed a bit strange. */
1473 struct GTY(()) tree_function_decl
{
1474 struct tree_decl_non_common common
;
1478 /* The personality function. Used for stack unwinding. */
1481 /* Function specific options that are used by this function. */
1482 tree function_specific_target
; /* target options */
1483 tree function_specific_optimization
; /* optimization options */
1485 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1486 DECL_FUNCTION_CODE. Otherwise unused.
1487 ??? The bitfield needs to be able to hold all target function
1489 ENUM_BITFIELD(built_in_function
) function_code
: 11;
1490 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1492 unsigned static_ctor_flag
: 1;
1493 unsigned static_dtor_flag
: 1;
1494 unsigned uninlinable
: 1;
1496 unsigned possibly_inlined
: 1;
1497 unsigned novops_flag
: 1;
1498 unsigned returns_twice_flag
: 1;
1499 unsigned malloc_flag
: 1;
1500 unsigned operator_new_flag
: 1;
1501 unsigned declared_inline_flag
: 1;
1502 unsigned regdecl_flag
: 1;
1503 unsigned no_inline_warning_flag
: 1;
1505 unsigned no_instrument_function_entry_exit
: 1;
1506 unsigned no_limit_stack
: 1;
1507 unsigned disregard_inline_limits
: 1;
1508 unsigned pure_flag
: 1;
1509 unsigned looping_const_or_pure_flag
: 1;
1510 unsigned has_debug_args_flag
: 1;
1511 unsigned tm_clone_flag
: 1;
1512 unsigned versioned_function
: 1;
1516 struct GTY(()) tree_translation_unit_decl
{
1517 struct tree_decl_common common
;
1518 /* Source language of this translation unit. Used for DWARF output. */
1519 const char * GTY((skip(""))) language
;
1520 /* TODO: Non-optimization used to build this translation unit. */
1521 /* TODO: Root of a partial DWARF tree for global types and decls. */
1524 struct GTY(()) tree_type_decl
{
1525 struct tree_decl_non_common common
;
1529 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1531 struct tree_statement_list_node
*prev
;
1532 struct tree_statement_list_node
*next
;
1536 struct GTY(()) tree_statement_list
1538 struct tree_typed typed
;
1539 struct tree_statement_list_node
*head
;
1540 struct tree_statement_list_node
*tail
;
1544 /* Optimization options used by a function. */
1546 struct GTY(()) tree_optimization_option
{
1547 struct tree_common common
;
1549 /* The optimization options used by the user. */
1550 struct cl_optimization opts
;
1552 /* Target optabs for this set of optimization options. This is of
1553 type `struct target_optabs *'. */
1554 unsigned char *GTY ((atomic
)) optabs
;
1556 /* The value of this_target_optabs against which the optabs above were
1558 struct target_optabs
*GTY ((skip
)) base_optabs
;
1561 /* Target options used by a function. */
1563 struct GTY(()) tree_target_option
{
1564 struct tree_common common
;
1566 /* The optimization options used by the user. */
1567 struct cl_target_option opts
;
1570 /* Define the overall contents of a tree node.
1571 It may be any of the structures declared above
1572 for various types of node. */
1573 union GTY ((ptr_alias (union lang_tree_node
),
1574 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1575 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1576 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1577 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1578 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1579 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1580 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1581 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1582 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1583 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1584 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1585 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1586 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1587 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1588 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1590 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1591 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1592 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1593 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1594 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1595 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1596 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1597 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1598 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1599 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1600 translation_unit_decl
;
1601 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1602 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1603 type_with_lang_specific
;
1604 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1606 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1607 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1608 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1609 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1610 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1611 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1612 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1613 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1614 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1615 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1616 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1619 /* Structure describing an attribute and a function to handle it. */
1620 struct attribute_spec
{
1621 /* The name of the attribute (without any leading or trailing __),
1622 or NULL to mark the end of a table of attributes. */
1624 /* The minimum length of the list of arguments of the attribute. */
1626 /* The maximum length of the list of arguments of the attribute
1627 (-1 for no maximum). */
1629 /* Whether this attribute requires a DECL. If it does, it will be passed
1630 from types of DECLs, function return types and array element types to
1631 the DECLs, function types and array types respectively; but when
1632 applied to a type in any other circumstances, it will be ignored with
1633 a warning. (If greater control is desired for a given attribute,
1634 this should be false, and the flags argument to the handler may be
1635 used to gain greater control in that case.) */
1637 /* Whether this attribute requires a type. If it does, it will be passed
1638 from a DECL to the type of that DECL. */
1640 /* Whether this attribute requires a function (or method) type. If it does,
1641 it will be passed from a function pointer type to the target type,
1642 and from a function return type (which is not itself a function
1643 pointer type) to the function type. */
1644 bool function_type_required
;
1645 /* Function to handle this attribute. NODE points to the node to which
1646 the attribute is to be applied. If a DECL, it should be modified in
1647 place; if a TYPE, a copy should be created. NAME is the name of the
1648 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1649 of the arguments (which may be NULL). FLAGS gives further information
1650 about the context of the attribute. Afterwards, the attributes will
1651 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1652 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1653 as well as in any other cases when the attributes should not be added
1654 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1655 applied to another type or DECL later may be returned;
1656 otherwise the return value should be NULL_TREE. This pointer may be
1657 NULL if no special handling is required beyond the checks implied
1658 by the rest of this structure. */
1659 tree (*handler
) (tree
*node
, tree name
, tree args
,
1660 int flags
, bool *no_add_attrs
);
1661 /* Specifies if attribute affects type's identity. */
1662 bool affects_type_identity
;
1665 /* These functions allow a front-end to perform a manual layout of a
1666 RECORD_TYPE. (For instance, if the placement of subsequent fields
1667 depends on the placement of fields so far.) Begin by calling
1668 start_record_layout. Then, call place_field for each of the
1669 fields. Then, call finish_record_layout. See layout_type for the
1670 default way in which these functions are used. */
1671 typedef struct record_layout_info_s
{
1672 /* The RECORD_TYPE that we are laying out. */
1674 /* The offset into the record so far, in bytes, not including bits in
1677 /* The last known alignment of SIZE. */
1678 unsigned int offset_align
;
1679 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1681 /* The alignment of the record so far, in bits. */
1682 unsigned int record_align
;
1683 /* The alignment of the record so far, ignoring #pragma pack and
1684 __attribute__ ((packed)), in bits. */
1685 unsigned int unpacked_align
;
1686 /* The previous field laid out. */
1688 /* The static variables (i.e., class variables, as opposed to
1689 instance variables) encountered in T. */
1690 vec
<tree
, va_gc
> *pending_statics
;
1691 /* Bits remaining in the current alignment group */
1692 int remaining_in_alignment
;
1693 /* True if we've seen a packed field that didn't have normal
1694 alignment anyway. */
1695 int packed_maybe_necessary
;
1696 } *record_layout_info
;
1698 /* Iterator for going through the function arguments. */
1699 struct function_args_iterator
{
1700 tree next
; /* TREE_LIST pointing to the next argument */
1703 /* Structures to map from a tree to another tree. */
1704 struct GTY(()) tree_map_base
{
1708 /* Map from a tree to another tree. */
1710 struct GTY(()) tree_map
{
1711 struct tree_map_base base
;
1716 /* Map from a decl tree to another tree. */
1717 struct GTY(()) tree_decl_map
{
1718 struct tree_map_base base
;
1722 /* Map from a tree to an int. */
1723 struct GTY(()) tree_int_map
{
1724 struct tree_map_base base
;
1728 /* Map from a tree to initialization/finalization priorities. */
1729 struct GTY(()) tree_priority_map
{
1730 struct tree_map_base base
;
1735 /* Map from a decl tree to a tree vector. */
1736 struct GTY(()) tree_vec_map
{
1737 struct tree_map_base base
;
1738 vec
<tree
, va_gc
> *to
;
1741 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1742 have to go towards the end of tree.h so that union tree_node is fully
1743 defined by this point. */
1745 /* Structure containing iterator state. */
1746 struct call_expr_arg_iterator
{
1747 tree t
; /* the call_expr */
1748 int n
; /* argument count */
1749 int i
; /* next argument index */
1752 struct const_call_expr_arg_iterator
{
1753 const_tree t
; /* the call_expr */
1754 int n
; /* argument count */
1755 int i
; /* next argument index */
1758 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1759 function, and a flag that says if the function is available implicitly, or
1760 whether the user has to code explicit calls to __builtin_<xxx>. */
1761 struct GTY(()) builtin_info_type
{
1762 tree decl
[(int)END_BUILTINS
];
1763 bool implicit_p
[(int)END_BUILTINS
];
1767 /*---------------------------------------------------------------------------
1769 ---------------------------------------------------------------------------*/
1770 /* Matrix describing the structures contained in a given tree code. */
1771 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1773 /* Class of tree given its code. */
1774 extern const enum tree_code_class tree_code_type
[];
1776 /* Each tree code class has an associated string representation.
1777 These must correspond to the tree_code_class entries. */
1778 extern const char *const tree_code_class_strings
[];
1780 /* Number of argument-words in each kind of tree-node. */
1781 extern const unsigned char tree_code_length
[];
1783 /* Vector of all alias pairs for global symbols. */
1784 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1786 /* Names of all the built_in classes. */
1787 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1789 /* Names of all the built_in functions. */
1790 extern const char * built_in_names
[(int) END_BUILTINS
];
1792 /* Number of operands and names for each OMP_CLAUSE node. */
1793 extern unsigned const char omp_clause_num_ops
[];
1794 extern const char * const omp_clause_code_name
[];
1796 /* A vector of all translation-units. */
1797 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
1799 /* Vector of standard trees used by the C compiler. */
1800 extern GTY(()) tree global_trees
[TI_MAX
];
1802 /* The standard C integer types. Use integer_type_kind to index into
1804 extern GTY(()) tree integer_types
[itk_none
];
1806 /* Types used to represent sizes. */
1807 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
1809 /* Arrays for keeping track of tree node statistics. */
1810 extern int tree_node_counts
[];
1811 extern int tree_node_sizes
[];
1813 /* True if we are in gimple form and the actions of the folders need to
1814 be restricted. False if we are not in gimple form and folding is not
1815 restricted to creating gimple expressions. */
1816 extern bool in_gimple_form
;
1818 /* Functional interface to the builtin functions. */
1819 extern GTY(()) builtin_info_type builtin_info
;
1821 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
1822 extern unsigned int maximum_field_alignment
;
1824 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
1825 Zero means allow extended lvalues. */
1826 extern int pedantic_lvalues
;
1828 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
1829 extern GTY(()) tree current_function_decl
;
1831 /* Nonzero means a FUNC_BEGIN label was emitted. */
1832 extern GTY(()) const char * current_function_func_begin_label
;
1834 #endif // GCC_TREE_CORE_H