1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2014 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
27 #include "statistics.h"
29 #include "double-int.h"
31 #include "fixed-value.h"
36 /* This file contains all the data structures that define the 'tree' type.
37 There are no accessor macros nor functions in this file. Only the
38 basic data structures, extern declarations and type definitions. */
40 /*---------------------------------------------------------------------------
41 Forward type declarations. Mostly to avoid including unnecessary headers
42 ---------------------------------------------------------------------------*/
47 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/OpenACC clause: private (variable_list). */
219 /* OpenMP clause: shared (variable_list). */
222 /* OpenMP/OpenACC clause: firstprivate (variable_list). */
223 OMP_CLAUSE_FIRSTPRIVATE
,
225 /* OpenMP clause: lastprivate (variable_list). */
226 OMP_CLAUSE_LASTPRIVATE
,
228 /* OpenMP/OpenACC 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 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
262 device, host (self), present, present_or_copy (pcopy), present_or_copyin
263 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
266 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
269 /* Internal structure to hold OpenACC cache directive's variable-list.
270 #pragma acc cache (variable-list). */
273 /* OpenACC clause: device_resident (variable_list). */
274 OMP_CLAUSE_DEVICE_RESIDENT
,
276 /* OpenACC clause: use_device (variable_list). */
277 OMP_CLAUSE_USE_DEVICE
,
279 /* OpenACC clause: gang [(gang-argument-list)].
281 gang-argument-list: [gang-argument-list, ] gang-argument
282 gang-argument: [num:] integer-expression
283 | static: size-expression
284 size-expression: * | integer-expression. */
287 /* OpenACC clause: async [(integer-expression)]. */
290 /* OpenACC clause/directive: wait [(integer-expression-list)]. */
293 /* Internal clause: temporary for combined loops expansion. */
294 OMP_CLAUSE__LOOPTEMP_
,
296 /* OpenMP/OpenACC clause: if (scalar-expression). */
299 /* OpenMP clause: num_threads (integer-expression). */
300 OMP_CLAUSE_NUM_THREADS
,
302 /* OpenMP clause: schedule. */
305 /* OpenMP clause: nowait. */
308 /* OpenMP clause: ordered. */
309 /* OpenACC clause: seq. */
312 /* OpenMP clause: default. */
315 /* OpenMP/OpenACC clause: collapse (constant-integer-expression). */
318 /* OpenMP clause: untied. */
321 /* OpenMP clause: final (scalar-expression). */
324 /* OpenMP clause: mergeable. */
325 OMP_CLAUSE_MERGEABLE
,
327 /* OpenMP clause: device (integer-expression). */
330 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
331 OMP_CLAUSE_DIST_SCHEDULE
,
333 /* OpenMP clause: inbranch. */
336 /* OpenMP clause: notinbranch. */
337 OMP_CLAUSE_NOTINBRANCH
,
339 /* OpenMP clause: num_teams(integer-expression). */
340 OMP_CLAUSE_NUM_TEAMS
,
342 /* OpenMP clause: thread_limit(integer-expression). */
343 OMP_CLAUSE_THREAD_LIMIT
,
345 /* OpenMP clause: proc_bind ({master,close,spread}). */
346 OMP_CLAUSE_PROC_BIND
,
348 /* OpenMP clause: safelen (constant-integer-expression). */
351 /* OpenMP clause: simdlen (constant-integer-expression). */
354 /* OpenMP clause: for. */
357 /* OpenMP clause: parallel. */
360 /* OpenMP clause: sections. */
363 /* OpenMP clause: taskgroup. */
364 OMP_CLAUSE_TASKGROUP
,
366 /* Internally used only clause, holding SIMD uid. */
367 OMP_CLAUSE__SIMDUID_
,
369 /* Internally used only clause, holding _Cilk_for # of iterations
371 OMP_CLAUSE__CILK_FOR_COUNT_
,
373 /* OpenACC clause: independent. */
374 OMP_CLAUSE_INDEPENDENT
,
376 /* OpenACC clause: worker [( [num:] integer-expression)]. */
379 /* OpenACC clause: vector [( [length:] integer-expression)]. */
382 /* OpenACC clause: num_gangs (integer-expression). */
383 OMP_CLAUSE_NUM_GANGS
,
385 /* OpenACC clause: num_workers (integer-expression). */
386 OMP_CLAUSE_NUM_WORKERS
,
388 /* OpenACC clause: vector_length (integer-expression). */
389 OMP_CLAUSE_VECTOR_LENGTH
393 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
394 enum tree_node_structure_enum
{
395 #include "treestruct.def"
400 enum omp_clause_schedule_kind
{
401 OMP_CLAUSE_SCHEDULE_STATIC
,
402 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
403 OMP_CLAUSE_SCHEDULE_GUIDED
,
404 OMP_CLAUSE_SCHEDULE_AUTO
,
405 OMP_CLAUSE_SCHEDULE_RUNTIME
,
406 OMP_CLAUSE_SCHEDULE_CILKFOR
,
407 OMP_CLAUSE_SCHEDULE_LAST
410 enum omp_clause_default_kind
{
411 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
412 OMP_CLAUSE_DEFAULT_SHARED
,
413 OMP_CLAUSE_DEFAULT_NONE
,
414 OMP_CLAUSE_DEFAULT_PRIVATE
,
415 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
416 OMP_CLAUSE_DEFAULT_LAST
419 /* There is a TYPE_QUAL value for each type qualifier. They can be
420 combined by bitwise-or to form the complete set of qualifiers for a
423 TYPE_UNQUALIFIED
= 0x0,
424 TYPE_QUAL_CONST
= 0x1,
425 TYPE_QUAL_VOLATILE
= 0x2,
426 TYPE_QUAL_RESTRICT
= 0x4,
427 TYPE_QUAL_ATOMIC
= 0x8
430 /* Enumerate visibility settings. */
431 #ifndef SYMBOL_VISIBILITY_DEFINED
432 #define SYMBOL_VISIBILITY_DEFINED
433 enum symbol_visibility
{
435 VISIBILITY_PROTECTED
,
439 #endif // SYMBOL_VISIBILITY_DEFINED
441 /* Standard named or nameless data types of the C compiler. */
471 TI_INTEGER_MINUS_ONE
,
488 TI_COMPLEX_INTEGER_TYPE
,
489 TI_COMPLEX_FLOAT_TYPE
,
490 TI_COMPLEX_DOUBLE_TYPE
,
491 TI_COMPLEX_LONG_DOUBLE_TYPE
,
499 TI_LONG_DOUBLE_PTR_TYPE
,
509 TI_VA_LIST_GPR_COUNTER_FIELD
,
510 TI_VA_LIST_FPR_COUNTER_FIELD
,
513 TI_POINTER_SIZED_TYPE
,
515 TI_POINTER_BOUNDS_TYPE
,
520 TI_DFLOAT32_PTR_TYPE
,
521 TI_DFLOAT64_PTR_TYPE
,
522 TI_DFLOAT128_PTR_TYPE
,
535 TI_SAT_ULLFRACT_TYPE
,
551 TI_SAT_ULLACCUM_TYPE
,
597 TI_OPTIMIZATION_DEFAULT
,
598 TI_OPTIMIZATION_CURRENT
,
599 TI_TARGET_OPTION_DEFAULT
,
600 TI_TARGET_OPTION_CURRENT
,
601 TI_CURRENT_TARGET_PRAGMA
,
602 TI_CURRENT_OPTIMIZE_PRAGMA
,
607 /* An enumeration of the standard C integer types. These must be
608 ordered so that shorter types appear before longer ones, and so
609 that signed types appear before unsigned ones, for the correct
610 functioning of interpret_integer() in c-lex.c. */
611 enum integer_type_kind
{
622 itk_unsigned_long_long
,
636 /* A pointer-to-function member type looks like:
643 If __pfn is NULL, it is a NULL pointer-to-member-function.
645 (Because the vtable is always the first thing in the object, we
646 don't need its offset.) If the function is virtual, then PFN is
647 one plus twice the index into the vtable; otherwise, it is just a
648 pointer to the function.
650 Unfortunately, using the lowest bit of PFN doesn't work in
651 architectures that don't impose alignment requirements on function
652 addresses, or that use the lowest bit to tell one ISA from another,
653 for example. For such architectures, we use the lowest bit of
654 DELTA instead of the lowest bit of the PFN, and DELTA will be
656 enum ptrmemfunc_vbit_where_t
{
657 ptrmemfunc_vbit_in_pfn
,
658 ptrmemfunc_vbit_in_delta
661 /* Flags that may be passed in the third argument of decl_attributes, and
662 to handler functions for attributes. */
663 enum attribute_flags
{
664 /* The type passed in is the type of a DECL, and any attributes that
665 should be passed in again to be applied to the DECL rather than the
666 type should be returned. */
667 ATTR_FLAG_DECL_NEXT
= 1,
668 /* The type passed in is a function return type, and any attributes that
669 should be passed in again to be applied to the function type rather
670 than the return type should be returned. */
671 ATTR_FLAG_FUNCTION_NEXT
= 2,
672 /* The type passed in is an array element type, and any attributes that
673 should be passed in again to be applied to the array type rather
674 than the element type should be returned. */
675 ATTR_FLAG_ARRAY_NEXT
= 4,
676 /* The type passed in is a structure, union or enumeration type being
677 created, and should be modified in place. */
678 ATTR_FLAG_TYPE_IN_PLACE
= 8,
679 /* The attributes are being applied by default to a library function whose
680 name indicates known behavior, and should be silently ignored if they
681 are not in fact compatible with the function type. */
682 ATTR_FLAG_BUILT_IN
= 16,
683 /* A given attribute has been parsed as a C++-11 attribute. */
687 /* Types used to represent sizes. */
688 enum size_type_kind
{
689 stk_sizetype
, /* Normal representation of sizes in bytes. */
690 stk_ssizetype
, /* Signed representation of sizes in bytes. */
691 stk_bitsizetype
, /* Normal representation of sizes in bits. */
692 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
696 enum operand_equal_flag
{
699 OEP_CONSTANT_ADDRESS_OF
= 4
702 /* Enum and arrays used for tree allocation stats.
703 Keep in sync with tree.c:tree_node_kind_names. */
704 enum tree_node_kind
{
724 enum annot_expr_kind
{
725 annot_expr_ivdep_kind
,
726 annot_expr_no_vector_kind
,
727 annot_expr_vector_kind
,
731 /* Internal functions. */
733 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
734 #include "internal-fn.def"
735 #undef DEF_INTERNAL_FN
739 /*---------------------------------------------------------------------------
741 ---------------------------------------------------------------------------*/
742 /* When processing aliases at the symbol table level, we need the
743 declaration of target. For this reason we need to queue aliases and
744 process them after all declarations has been produced. */
745 struct GTY(()) alias_pair
{
750 /* An initialization priority. */
751 typedef unsigned short priority_type
;
753 /* The type of a callback function for walking over tree structure. */
754 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
756 /* The type of a callback function that represents a custom walk_tree. */
757 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
758 void *, hash_set
<tree
> *);
761 /*---------------------------------------------------------------------------
763 ---------------------------------------------------------------------------*/
764 /* A tree node can represent a data type, a variable, an expression
765 or a statement. Each node has a TREE_CODE which says what kind of
766 thing it represents. Some common codes are:
767 INTEGER_TYPE -- represents a type of integers.
768 ARRAY_TYPE -- represents a type of pointer.
769 VAR_DECL -- represents a declared variable.
770 INTEGER_CST -- represents a constant integer value.
771 PLUS_EXPR -- represents a sum (an expression).
773 As for the contents of a tree node: there are some fields
774 that all nodes share. Each TREE_CODE has various special-purpose
775 fields as well. The fields of a node are never accessed directly,
776 always through accessor macros. */
778 /* Every kind of tree node starts with this structure,
779 so all nodes have these fields.
781 See the accessor macros, defined below, for documentation of the
782 fields, and the table below which connects the fields and the
785 struct GTY(()) tree_base
{
786 ENUM_BITFIELD(tree_code
) code
: 16;
788 unsigned side_effects_flag
: 1;
789 unsigned constant_flag
: 1;
790 unsigned addressable_flag
: 1;
791 unsigned volatile_flag
: 1;
792 unsigned readonly_flag
: 1;
793 unsigned asm_written_flag
: 1;
794 unsigned nowarning_flag
: 1;
795 unsigned visited
: 1;
797 unsigned used_flag
: 1;
798 unsigned nothrow_flag
: 1;
799 unsigned static_flag
: 1;
800 unsigned public_flag
: 1;
801 unsigned private_flag
: 1;
802 unsigned protected_flag
: 1;
803 unsigned deprecated_flag
: 1;
804 unsigned default_def_flag
: 1;
807 /* The bits in the following structure should only be used with
808 accessor macros that constrain inputs with tree checking. */
810 unsigned lang_flag_0
: 1;
811 unsigned lang_flag_1
: 1;
812 unsigned lang_flag_2
: 1;
813 unsigned lang_flag_3
: 1;
814 unsigned lang_flag_4
: 1;
815 unsigned lang_flag_5
: 1;
816 unsigned lang_flag_6
: 1;
817 unsigned saturating_flag
: 1;
819 unsigned unsigned_flag
: 1;
820 unsigned packed_flag
: 1;
821 unsigned user_align
: 1;
822 unsigned nameless_flag
: 1;
823 unsigned atomic_flag
: 1;
828 /* This field is only used with TREE_TYPE nodes; the only reason it is
829 present in tree_base instead of tree_type is to save space. The size
830 of the field must be large enough to hold addr_space_t values. */
831 unsigned address_space
: 8;
834 /* The following fields are present in tree_base to save space. The
835 nodes using them do not require any of the flags above and so can
836 make better use of the 4-byte sized word. */
838 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
840 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
841 its native precision. */
842 unsigned char unextended
;
844 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
845 wider precisions based on its TYPE_SIGN. */
846 unsigned char extended
;
848 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
849 offset_int precision, with smaller integers being extended
850 according to their TYPE_SIGN. This is equal to one of the two
851 fields above but is cached for speed. */
852 unsigned char offset
;
855 /* VEC length. This field is only used with TREE_VEC. */
858 /* SSA version number. This field is only used with SSA_NAME. */
859 unsigned int version
;
861 /* Internal function code. */
862 enum internal_fn ifn
;
866 /* The following table lists the uses of each of the above flags and
867 for which types of nodes they are defined.
872 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
875 CONSTRUCTOR, IDENTIFIER_NODE
878 CALL_EXPR_TAILCALL in
884 PREDICT_EXPR_OUTCOME in
890 VAR_DECL, FUNCTION_DECL
893 TREE_NO_TRAMPOLINE in
899 TREE_SYMBOL_REFERENCED in
903 TARGET_EXPR, WITH_CLEANUP_EXPR
905 TRY_CATCH_IS_CLEANUP in
911 TYPE_REF_CAN_ALIAS_ALL in
912 POINTER_TYPE, REFERENCE_TYPE
920 TRANSACTION_EXPR_OUTER in
923 SSA_NAME_ANTI_RANGE_P in
929 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
932 VAR_DECL, FUNCTION_DECL
935 CONSTRUCTOR_NO_CLEARING in
941 CALL_EXPR_VA_ARG_PACK in
944 TYPE_CACHED_VALUES_P in
947 SAVE_EXPR_RESOLVED_P in
950 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
951 OMP_CLAUSE_LASTPRIVATE
953 OMP_CLAUSE_PRIVATE_DEBUG in
956 OMP_CLAUSE_LINEAR_NO_COPYIN in
959 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
962 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
965 TRANSACTION_EXPR_RELAXED in
973 CALL_EXPR_RETURN_SLOT_OPT in
979 OMP_PARALLEL_COMBINED in
982 OMP_ATOMIC_SEQ_CST in
985 OMP_CLAUSE_PRIVATE_OUTER_REF in
988 OMP_CLAUSE_LINEAR_NO_COPYOUT in
991 TYPE_REF_IS_RVALUE in
1003 CALL_FROM_THUNK_P and
1004 CALL_ALLOCA_FOR_VAR_P in
1007 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1012 TREE_SIDE_EFFECTS in
1022 TREE_THIS_VOLATILE in
1045 TYPE_SIZES_GIMPLIFIED in
1059 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1060 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1063 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1083 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1085 SSA_NAME_IN_FREELIST in
1097 IDENTIFIER_TRANSPARENT_ALIAS in
1103 all trees (used liberally by many passes)
1110 VAR_DECL_IS_VIRTUAL_OPERAND in
1124 TYPE_VECTOR_OPAQUE in
1127 SSA_NAME_IS_DEFAULT_DEF in
1130 DECL_NONLOCAL_FRAME in
1134 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1137 struct GTY(()) tree_typed
{
1138 struct tree_base base
;
1142 struct GTY(()) tree_common
{
1143 struct tree_typed typed
;
1147 struct GTY(()) tree_int_cst
{
1148 struct tree_typed typed
;
1149 HOST_WIDE_INT val
[1];
1153 struct GTY(()) tree_real_cst
{
1154 struct tree_typed typed
;
1155 struct real_value
* real_cst_ptr
;
1158 struct GTY(()) tree_fixed_cst
{
1159 struct tree_typed typed
;
1160 struct fixed_value
* fixed_cst_ptr
;
1163 struct GTY(()) tree_string
{
1164 struct tree_typed typed
;
1169 struct GTY(()) tree_complex
{
1170 struct tree_typed typed
;
1175 struct GTY(()) tree_vector
{
1176 struct tree_typed typed
;
1177 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1180 struct GTY(()) tree_identifier
{
1181 struct tree_common common
;
1182 struct ht_identifier id
;
1185 struct GTY(()) tree_list
{
1186 struct tree_common common
;
1191 struct GTY(()) tree_vec
{
1192 struct tree_common common
;
1193 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1196 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1197 element. INDEX can optionally design the position of VALUE: in arrays,
1198 it is the index where VALUE has to be placed; in structures, it is the
1199 FIELD_DECL of the member. */
1200 struct GTY(()) constructor_elt
{
1205 struct GTY(()) tree_constructor
{
1206 struct tree_typed typed
;
1207 vec
<constructor_elt
, va_gc
> *elts
;
1210 enum omp_clause_depend_kind
1212 OMP_CLAUSE_DEPEND_IN
,
1213 OMP_CLAUSE_DEPEND_OUT
,
1214 OMP_CLAUSE_DEPEND_INOUT
,
1215 OMP_CLAUSE_DEPEND_LAST
1218 enum omp_clause_map_kind
1220 /* If not already present, allocate. */
1221 OMP_CLAUSE_MAP_ALLOC
= 0,
1222 /* ..., and copy to device. */
1223 OMP_CLAUSE_MAP_TO
= 1 << 0,
1224 /* ..., and copy from device. */
1225 OMP_CLAUSE_MAP_FROM
= 1 << 1,
1226 /* ..., and copy to and from device. */
1227 OMP_CLAUSE_MAP_TOFROM
= OMP_CLAUSE_MAP_TO
| OMP_CLAUSE_MAP_FROM
,
1228 /* Special map kinds. */
1229 OMP_CLAUSE_MAP_SPECIAL
= 1 << 2,
1230 /* The following kind is an internal only map kind, used for pointer based
1231 array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
1232 which is implicitly POINTER_SIZE_UNITS, but the bias. */
1233 OMP_CLAUSE_MAP_POINTER
= OMP_CLAUSE_MAP_SPECIAL
,
1234 /* Also internal, behaves like OMP_CLAUS_MAP_TO, but additionally any
1235 OMP_CLAUSE_MAP_POINTER records consecutive after it which have addresses
1236 falling into that range will not be ignored if OMP_CLAUSE_MAP_TO_PSET
1237 wasn't mapped already. */
1238 OMP_CLAUSE_MAP_TO_PSET
,
1239 /* The following are only valid for OpenACC. */
1240 /* Flag to force a specific behavior (or else, a run-time error). */
1241 OMP_CLAUSE_MAP_FORCE
= 1 << 3,
1243 OMP_CLAUSE_MAP_FORCE_ALLOC
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_ALLOC
,
1244 /* ..., and copy to device. */
1245 OMP_CLAUSE_MAP_FORCE_TO
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_TO
,
1246 /* ..., and copy from device. */
1247 OMP_CLAUSE_MAP_FORCE_FROM
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_FROM
,
1248 /* ..., and copy to and from device. */
1249 OMP_CLAUSE_MAP_FORCE_TOFROM
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_TOFROM
,
1250 /* Must already be present. */
1251 OMP_CLAUSE_MAP_FORCE_PRESENT
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_SPECIAL
,
1252 /* Deallocate a mapping, without copying from device. */
1253 OMP_CLAUSE_MAP_FORCE_DEALLOC
,
1254 /* Is a device pointer. OMP_CLAUSE_SIZE for these is unused; is implicitly
1255 POINTER_SIZE / BITS_PER_UNIT. */
1256 OMP_CLAUSE_MAP_FORCE_DEVICEPTR
,
1262 enum omp_clause_proc_bind_kind
1264 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1265 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1266 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1267 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1268 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1269 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1270 OMP_CLAUSE_PROC_BIND_LAST
1273 struct GTY(()) tree_exp
{
1274 struct tree_typed typed
;
1276 tree
GTY ((special ("tree_exp"),
1277 desc ("TREE_CODE ((tree) &%0)")))
1281 /* Immediate use linking structure. This structure is used for maintaining
1282 a doubly linked list of uses of an SSA_NAME. */
1283 struct GTY(()) ssa_use_operand_t
{
1284 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1285 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1286 /* Immediate uses for a given SSA name are maintained as a cyclic
1287 list. To recognize the root of this list, the location field
1288 needs to point to the original SSA name. Since statements and
1289 SSA names are of different data types, we need this union. See
1290 the explanation in struct imm_use_iterator. */
1291 union { gimple stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1292 tree
*GTY((skip(""))) use
;
1295 struct GTY(()) tree_ssa_name
{
1296 struct tree_typed typed
;
1298 /* _DECL wrapped by this SSA name. */
1301 /* Statement that defines this SSA name. */
1304 /* Value range information. */
1305 union ssa_name_info_type
{
1306 /* Pointer attributes used for alias analysis. */
1307 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1308 /* Value range attributes used for zero/sign extension elimination. */
1309 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1310 } GTY ((desc ("%1.typed.type ?" \
1311 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1313 /* Immediate uses list for this SSA_NAME. */
1314 struct ssa_use_operand_t imm_uses
;
1317 struct GTY(()) phi_arg_d
{
1318 /* imm_use MUST be the first element in struct because we do some
1319 pointer arithmetic with it. See phi_arg_index_from_use. */
1320 struct ssa_use_operand_t imm_use
;
1325 struct GTY(()) tree_omp_clause
{
1326 struct tree_common common
;
1328 enum omp_clause_code code
;
1329 union omp_clause_subcode
{
1330 enum omp_clause_default_kind default_kind
;
1331 enum omp_clause_schedule_kind schedule_kind
;
1332 enum omp_clause_depend_kind depend_kind
;
1333 enum omp_clause_map_kind map_kind
;
1334 enum omp_clause_proc_bind_kind proc_bind_kind
;
1335 enum tree_code reduction_code
;
1336 } GTY ((skip
)) subcode
;
1338 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1340 gimple_seq gimple_reduction_init
;
1341 gimple_seq gimple_reduction_merge
;
1343 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1347 struct GTY(()) tree_block
{
1348 struct tree_base base
;
1351 unsigned abstract_flag
: 1;
1352 unsigned block_num
: 31;
1355 location_t end_locus
;
1358 vec
<tree
, va_gc
> *nonlocalized_vars
;
1362 tree abstract_origin
;
1363 tree fragment_origin
;
1364 tree fragment_chain
;
1367 struct GTY(()) tree_type_common
{
1368 struct tree_common common
;
1374 unsigned int precision
: 10;
1375 unsigned no_force_blk_flag
: 1;
1376 unsigned needs_constructing_flag
: 1;
1377 unsigned transparent_aggr_flag
: 1;
1378 unsigned restrict_flag
: 1;
1379 unsigned contains_placeholder_bits
: 2;
1381 ENUM_BITFIELD(machine_mode
) mode
: 8;
1383 unsigned string_flag
: 1;
1384 unsigned lang_flag_0
: 1;
1385 unsigned lang_flag_1
: 1;
1386 unsigned lang_flag_2
: 1;
1387 unsigned lang_flag_3
: 1;
1388 unsigned lang_flag_4
: 1;
1389 unsigned lang_flag_5
: 1;
1390 unsigned lang_flag_6
: 1;
1393 alias_set_type alias_set
;
1396 union tree_type_symtab
{
1397 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1398 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1399 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1400 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1408 struct GTY(()) tree_type_with_lang_specific
{
1409 struct tree_type_common common
;
1410 /* Points to a structure whose details depend on the language in use. */
1411 struct lang_type
*lang_specific
;
1414 struct GTY(()) tree_type_non_common
{
1415 struct tree_type_with_lang_specific with_lang_specific
;
1422 struct GTY (()) tree_binfo
{
1423 struct tree_common common
;
1429 vec
<tree
, va_gc
> *base_accesses
;
1435 vec
<tree
, va_gc
> base_binfos
;
1438 struct GTY(()) tree_decl_minimal
{
1439 struct tree_common common
;
1446 struct GTY(()) tree_decl_common
{
1447 struct tree_decl_minimal common
;
1450 ENUM_BITFIELD(machine_mode
) mode
: 8;
1452 unsigned nonlocal_flag
: 1;
1453 unsigned virtual_flag
: 1;
1454 unsigned ignored_flag
: 1;
1455 unsigned abstract_flag
: 1;
1456 unsigned artificial_flag
: 1;
1457 unsigned preserve_flag
: 1;
1458 unsigned debug_expr_is_from
: 1;
1460 unsigned lang_flag_0
: 1;
1461 unsigned lang_flag_1
: 1;
1462 unsigned lang_flag_2
: 1;
1463 unsigned lang_flag_3
: 1;
1464 unsigned lang_flag_4
: 1;
1465 unsigned lang_flag_5
: 1;
1466 unsigned lang_flag_6
: 1;
1467 unsigned lang_flag_7
: 1;
1468 unsigned lang_flag_8
: 1;
1470 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1471 unsigned decl_flag_0
: 1;
1472 /* In FIELD_DECL, this is DECL_BIT_FIELD
1473 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1474 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1475 unsigned decl_flag_1
: 1;
1476 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1477 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1478 DECL_HAS_VALUE_EXPR_P. */
1479 unsigned decl_flag_2
: 1;
1481 unsigned decl_flag_3
: 1;
1482 /* Logically, these two would go in a theoretical base shared by var and
1484 unsigned gimple_reg_flag
: 1;
1485 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1486 unsigned decl_by_reference_flag
: 1;
1487 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1488 unsigned decl_read_flag
: 1;
1489 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1490 unsigned decl_nonshareable_flag
: 1;
1492 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1493 unsigned int off_align
: 8;
1495 /* 24 bits unused. */
1497 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1500 /* UID for points-to sets, stable over copying from inlining. */
1501 unsigned int pt_uid
;
1506 tree abstract_origin
;
1508 /* Points to a structure whose details depend on the language in use. */
1509 struct lang_decl
*lang_specific
;
1512 struct GTY(()) tree_decl_with_rtl
{
1513 struct tree_decl_common common
;
1517 struct GTY(()) tree_field_decl
{
1518 struct tree_decl_common common
;
1521 tree bit_field_type
;
1527 struct GTY(()) tree_label_decl
{
1528 struct tree_decl_with_rtl common
;
1530 int eh_landing_pad_nr
;
1533 struct GTY(()) tree_result_decl
{
1534 struct tree_decl_with_rtl common
;
1537 struct GTY(()) tree_const_decl
{
1538 struct tree_decl_common common
;
1541 struct GTY(()) tree_parm_decl
{
1542 struct tree_decl_with_rtl common
;
1546 struct GTY(()) tree_decl_with_vis
{
1547 struct tree_decl_with_rtl common
;
1548 tree assembler_name
;
1549 struct symtab_node
*symtab_node
;
1551 /* Belong to VAR_DECL exclusively. */
1552 unsigned defer_output
: 1;
1553 unsigned hard_register
: 1;
1554 unsigned common_flag
: 1;
1555 unsigned in_text_section
: 1;
1556 unsigned in_constant_pool
: 1;
1557 unsigned dllimport_flag
: 1;
1558 /* Don't belong to VAR_DECL exclusively. */
1559 unsigned weak_flag
: 1;
1561 unsigned seen_in_bind_expr
: 1;
1562 unsigned comdat_flag
: 1;
1563 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1564 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1565 unsigned visibility_specified
: 1;
1567 /* Belong to FUNCTION_DECL exclusively. */
1568 unsigned init_priority_p
: 1;
1569 /* Used by C++ only. Might become a generic decl flag. */
1570 unsigned shadowed_for_var_p
: 1;
1571 /* Belong to FUNCTION_DECL exclusively. */
1572 unsigned cxx_constructor
: 1;
1573 /* Belong to FUNCTION_DECL exclusively. */
1574 unsigned cxx_destructor
: 1;
1575 /* Belong to FUNCTION_DECL exclusively. */
1577 /* Belong to FUNCTION_DECL exclusively. */
1578 unsigned regdecl_flag
: 1;
1579 /* 14 unused bits. */
1582 struct GTY(()) tree_var_decl
{
1583 struct tree_decl_with_vis common
;
1586 struct GTY(()) tree_decl_non_common
{
1587 struct tree_decl_with_vis common
;
1588 /* Almost all FE's use this. */
1592 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1593 arguments/result/saved_tree fields by front ends. It was either inherit
1594 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1595 which seemed a bit strange. */
1597 struct GTY(()) tree_function_decl
{
1598 struct tree_decl_non_common common
;
1602 /* Arguments of the function. */
1604 /* The personality function. Used for stack unwinding. */
1607 /* Function specific options that are used by this function. */
1608 tree function_specific_target
; /* target options */
1609 tree function_specific_optimization
; /* optimization options */
1611 /* Generic function body. */
1613 /* Index within a virtual table. */
1616 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1617 DECL_FUNCTION_CODE. Otherwise unused.
1618 ??? The bitfield needs to be able to hold all target function
1620 ENUM_BITFIELD(built_in_function
) function_code
: 12;
1621 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1623 unsigned static_ctor_flag
: 1;
1624 unsigned static_dtor_flag
: 1;
1626 unsigned uninlinable
: 1;
1627 unsigned possibly_inlined
: 1;
1628 unsigned novops_flag
: 1;
1629 unsigned returns_twice_flag
: 1;
1630 unsigned malloc_flag
: 1;
1631 unsigned operator_new_flag
: 1;
1632 unsigned declared_inline_flag
: 1;
1633 unsigned no_inline_warning_flag
: 1;
1635 unsigned no_instrument_function_entry_exit
: 1;
1636 unsigned no_limit_stack
: 1;
1637 unsigned disregard_inline_limits
: 1;
1638 unsigned pure_flag
: 1;
1639 unsigned looping_const_or_pure_flag
: 1;
1640 unsigned has_debug_args_flag
: 1;
1641 unsigned tm_clone_flag
: 1;
1642 unsigned versioned_function
: 1;
1646 struct GTY(()) tree_translation_unit_decl
{
1647 struct tree_decl_common common
;
1648 /* Source language of this translation unit. Used for DWARF output. */
1649 const char * GTY((skip(""))) language
;
1650 /* TODO: Non-optimization used to build this translation unit. */
1651 /* TODO: Root of a partial DWARF tree for global types and decls. */
1654 struct GTY(()) tree_type_decl
{
1655 struct tree_decl_non_common common
;
1659 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1661 struct tree_statement_list_node
*prev
;
1662 struct tree_statement_list_node
*next
;
1666 struct GTY(()) tree_statement_list
1668 struct tree_typed typed
;
1669 struct tree_statement_list_node
*head
;
1670 struct tree_statement_list_node
*tail
;
1674 /* Optimization options used by a function. */
1676 struct GTY(()) tree_optimization_option
{
1677 struct tree_common common
;
1679 /* The optimization options used by the user. */
1680 struct cl_optimization opts
;
1682 /* Target optabs for this set of optimization options. This is of
1683 type `struct target_optabs *'. */
1684 void *GTY ((atomic
)) optabs
;
1686 /* The value of this_target_optabs against which the optabs above were
1688 struct target_optabs
*GTY ((skip
)) base_optabs
;
1691 /* Forward declaration, defined in target-globals.h. */
1693 struct GTY(()) target_globals
;
1695 /* Target options used by a function. */
1697 struct GTY(()) tree_target_option
{
1698 struct tree_common common
;
1700 /* Target globals for the corresponding target option. */
1701 struct target_globals
*globals
;
1703 /* The optimization options used by the user. */
1704 struct cl_target_option opts
;
1707 /* Define the overall contents of a tree node.
1708 It may be any of the structures declared above
1709 for various types of node. */
1710 union GTY ((ptr_alias (union lang_tree_node
),
1711 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1712 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1713 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1714 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1715 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1716 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1717 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1718 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1719 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1720 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1721 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1722 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1723 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1724 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1725 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1727 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1728 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1729 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1730 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1731 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1732 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1733 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1734 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1735 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1736 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1737 translation_unit_decl
;
1738 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1739 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1740 type_with_lang_specific
;
1741 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1743 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1744 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1745 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1746 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1747 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1748 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1749 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1750 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1751 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1752 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1753 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1756 /* Structure describing an attribute and a function to handle it. */
1757 struct attribute_spec
{
1758 /* The name of the attribute (without any leading or trailing __),
1759 or NULL to mark the end of a table of attributes. */
1761 /* The minimum length of the list of arguments of the attribute. */
1763 /* The maximum length of the list of arguments of the attribute
1764 (-1 for no maximum). */
1766 /* Whether this attribute requires a DECL. If it does, it will be passed
1767 from types of DECLs, function return types and array element types to
1768 the DECLs, function types and array types respectively; but when
1769 applied to a type in any other circumstances, it will be ignored with
1770 a warning. (If greater control is desired for a given attribute,
1771 this should be false, and the flags argument to the handler may be
1772 used to gain greater control in that case.) */
1774 /* Whether this attribute requires a type. If it does, it will be passed
1775 from a DECL to the type of that DECL. */
1777 /* Whether this attribute requires a function (or method) type. If it does,
1778 it will be passed from a function pointer type to the target type,
1779 and from a function return type (which is not itself a function
1780 pointer type) to the function type. */
1781 bool function_type_required
;
1782 /* Function to handle this attribute. NODE points to the node to which
1783 the attribute is to be applied. If a DECL, it should be modified in
1784 place; if a TYPE, a copy should be created. NAME is the name of the
1785 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1786 of the arguments (which may be NULL). FLAGS gives further information
1787 about the context of the attribute. Afterwards, the attributes will
1788 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1789 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1790 as well as in any other cases when the attributes should not be added
1791 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1792 applied to another type or DECL later may be returned;
1793 otherwise the return value should be NULL_TREE. This pointer may be
1794 NULL if no special handling is required beyond the checks implied
1795 by the rest of this structure. */
1796 tree (*handler
) (tree
*node
, tree name
, tree args
,
1797 int flags
, bool *no_add_attrs
);
1798 /* Specifies if attribute affects type's identity. */
1799 bool affects_type_identity
;
1802 /* These functions allow a front-end to perform a manual layout of a
1803 RECORD_TYPE. (For instance, if the placement of subsequent fields
1804 depends on the placement of fields so far.) Begin by calling
1805 start_record_layout. Then, call place_field for each of the
1806 fields. Then, call finish_record_layout. See layout_type for the
1807 default way in which these functions are used. */
1808 typedef struct record_layout_info_s
{
1809 /* The RECORD_TYPE that we are laying out. */
1811 /* The offset into the record so far, in bytes, not including bits in
1814 /* The last known alignment of SIZE. */
1815 unsigned int offset_align
;
1816 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1818 /* The alignment of the record so far, in bits. */
1819 unsigned int record_align
;
1820 /* The alignment of the record so far, ignoring #pragma pack and
1821 __attribute__ ((packed)), in bits. */
1822 unsigned int unpacked_align
;
1823 /* The previous field laid out. */
1825 /* The static variables (i.e., class variables, as opposed to
1826 instance variables) encountered in T. */
1827 vec
<tree
, va_gc
> *pending_statics
;
1828 /* Bits remaining in the current alignment group */
1829 int remaining_in_alignment
;
1830 /* True if we've seen a packed field that didn't have normal
1831 alignment anyway. */
1832 int packed_maybe_necessary
;
1833 } *record_layout_info
;
1835 /* Iterator for going through the function arguments. */
1836 struct function_args_iterator
{
1837 tree next
; /* TREE_LIST pointing to the next argument */
1840 /* Structures to map from a tree to another tree. */
1841 struct GTY(()) tree_map_base
{
1845 /* Map from a tree to another tree. */
1847 struct GTY(()) tree_map
{
1848 struct tree_map_base base
;
1853 /* Map from a decl tree to another tree. */
1854 struct GTY(()) tree_decl_map
{
1855 struct tree_map_base base
;
1859 /* Map from a tree to an int. */
1860 struct GTY(()) tree_int_map
{
1861 struct tree_map_base base
;
1865 /* Map from a decl tree to a tree vector. */
1866 struct GTY(()) tree_vec_map
{
1867 struct tree_map_base base
;
1868 vec
<tree
, va_gc
> *to
;
1871 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1872 have to go towards the end of tree.h so that union tree_node is fully
1873 defined by this point. */
1875 /* Structure containing iterator state. */
1876 struct call_expr_arg_iterator
{
1877 tree t
; /* the call_expr */
1878 int n
; /* argument count */
1879 int i
; /* next argument index */
1882 struct const_call_expr_arg_iterator
{
1883 const_tree t
; /* the call_expr */
1884 int n
; /* argument count */
1885 int i
; /* next argument index */
1888 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1889 function, and a flag that says if the function is available implicitly, or
1890 whether the user has to code explicit calls to __builtin_<xxx>. */
1891 struct GTY(()) builtin_info_type
{
1892 tree decl
[(int)END_BUILTINS
];
1893 bool implicit_p
[(int)END_BUILTINS
];
1897 /*---------------------------------------------------------------------------
1899 ---------------------------------------------------------------------------*/
1900 /* Matrix describing the structures contained in a given tree code. */
1901 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1903 /* Class of tree given its code. */
1904 extern const enum tree_code_class tree_code_type
[];
1906 /* Each tree code class has an associated string representation.
1907 These must correspond to the tree_code_class entries. */
1908 extern const char *const tree_code_class_strings
[];
1910 /* Number of argument-words in each kind of tree-node. */
1911 extern const unsigned char tree_code_length
[];
1913 /* Vector of all alias pairs for global symbols. */
1914 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1916 /* Names of all the built_in classes. */
1917 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1919 /* Names of all the built_in functions. */
1920 extern const char * built_in_names
[(int) END_BUILTINS
];
1922 /* Number of operands and names for each OMP_CLAUSE node. */
1923 extern unsigned const char omp_clause_num_ops
[];
1924 extern const char * const omp_clause_code_name
[];
1926 /* A vector of all translation-units. */
1927 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
1929 /* Vector of standard trees used by the C compiler. */
1930 extern GTY(()) tree global_trees
[TI_MAX
];
1932 /* The standard C integer types. Use integer_type_kind to index into
1934 extern GTY(()) tree integer_types
[itk_none
];
1936 /* Types used to represent sizes. */
1937 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
1939 /* Arrays for keeping track of tree node statistics. */
1940 extern int tree_node_counts
[];
1941 extern int tree_node_sizes
[];
1943 /* True if we are in gimple form and the actions of the folders need to
1944 be restricted. False if we are not in gimple form and folding is not
1945 restricted to creating gimple expressions. */
1946 extern bool in_gimple_form
;
1948 /* Functional interface to the builtin functions. */
1949 extern GTY(()) builtin_info_type builtin_info
;
1951 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
1952 extern unsigned int maximum_field_alignment
;
1954 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
1955 extern GTY(()) tree current_function_decl
;
1957 /* Nonzero means a FUNC_BEGIN label was emitted. */
1958 extern GTY(()) const char * current_function_func_begin_label
;
1960 #endif // GCC_TREE_CORE_H