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 present, present_or_copy (pcopy), present_or_copyin (pcopyin),
263 present_or_copyout (pcopyout), present_or_create (pcreate)}
266 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
269 /* OpenACC clause: host (variable_list). */
272 /* OpenACC clause: device (variable_list). */
273 OMP_CLAUSE_OACC_DEVICE
,
275 /* OpenACC clause: device_resident (variable_list). */
276 OMP_CLAUSE_DEVICE_RESIDENT
,
278 /* OpenACC clause: use_device (variable_list). */
279 OMP_CLAUSE_USE_DEVICE
,
281 /* OpenACC clause: gang [(gang-argument-list)].
283 gang-argument-list: [gang-argument-list, ] gang-argument
284 gang-argument: [num:] integer-expression
285 | static: size-expression
286 size-expression: * | integer-expression. */
289 /* OpenACC clause: async [(integer-expression)]. */
292 /* OpenACC clause/directive: wait [(integer-expression-list)]. */
295 /* Internal structure to hold OpenACC cache directive's variable-list.
296 #pragma acc cache (variable-list). */
299 /* Internal clause: temporary for combined loops expansion. */
300 OMP_CLAUSE__LOOPTEMP_
,
302 /* OpenMP/OpenACC clause: if (scalar-expression). */
305 /* OpenMP clause: num_threads (integer-expression). */
306 OMP_CLAUSE_NUM_THREADS
,
308 /* OpenMP clause: schedule. */
311 /* OpenMP clause: nowait. */
314 /* OpenMP clause: ordered. */
315 /* OpenACC clause: seq. */
318 /* OpenMP clause: default. */
321 /* OpenMP/OpenACC clause: collapse (constant-integer-expression). */
324 /* OpenMP clause: untied. */
327 /* OpenMP clause: final (scalar-expression). */
330 /* OpenMP clause: mergeable. */
331 OMP_CLAUSE_MERGEABLE
,
333 /* OpenMP clause: device (integer-expression). */
336 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
337 OMP_CLAUSE_DIST_SCHEDULE
,
339 /* OpenMP clause: inbranch. */
342 /* OpenMP clause: notinbranch. */
343 OMP_CLAUSE_NOTINBRANCH
,
345 /* OpenMP clause: num_teams(integer-expression). */
346 OMP_CLAUSE_NUM_TEAMS
,
348 /* OpenMP clause: thread_limit(integer-expression). */
349 OMP_CLAUSE_THREAD_LIMIT
,
351 /* OpenMP clause: proc_bind ({master,close,spread}). */
352 OMP_CLAUSE_PROC_BIND
,
354 /* OpenMP clause: safelen (constant-integer-expression). */
357 /* OpenMP clause: simdlen (constant-integer-expression). */
360 /* OpenMP clause: for. */
363 /* OpenMP clause: parallel. */
366 /* OpenMP clause: sections. */
369 /* OpenMP clause: taskgroup. */
370 OMP_CLAUSE_TASKGROUP
,
372 /* Internally used only clause, holding SIMD uid. */
373 OMP_CLAUSE__SIMDUID_
,
375 /* Internally used only clause, holding _Cilk_for # of iterations
377 OMP_CLAUSE__CILK_FOR_COUNT_
,
379 /* OpenACC clause: independent. */
380 OMP_CLAUSE_INDEPENDENT
,
382 /* OpenACC clause: worker [( [num:] integer-expression)]. */
385 /* OpenACC clause: vector [( [length:] integer-expression)]. */
388 /* OpenACC clause: num_gangs (integer-expression). */
389 OMP_CLAUSE_NUM_GANGS
,
391 /* OpenACC clause: num_workers (integer-expression). */
392 OMP_CLAUSE_NUM_WORKERS
,
394 /* OpenACC clause: vector_length (integer-expression). */
395 OMP_CLAUSE_VECTOR_LENGTH
399 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
400 enum tree_node_structure_enum
{
401 #include "treestruct.def"
406 enum omp_clause_schedule_kind
{
407 OMP_CLAUSE_SCHEDULE_STATIC
,
408 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
409 OMP_CLAUSE_SCHEDULE_GUIDED
,
410 OMP_CLAUSE_SCHEDULE_AUTO
,
411 OMP_CLAUSE_SCHEDULE_RUNTIME
,
412 OMP_CLAUSE_SCHEDULE_CILKFOR
,
413 OMP_CLAUSE_SCHEDULE_LAST
416 enum omp_clause_default_kind
{
417 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
418 OMP_CLAUSE_DEFAULT_SHARED
,
419 OMP_CLAUSE_DEFAULT_NONE
,
420 OMP_CLAUSE_DEFAULT_PRIVATE
,
421 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
422 OMP_CLAUSE_DEFAULT_LAST
425 /* There is a TYPE_QUAL value for each type qualifier. They can be
426 combined by bitwise-or to form the complete set of qualifiers for a
429 TYPE_UNQUALIFIED
= 0x0,
430 TYPE_QUAL_CONST
= 0x1,
431 TYPE_QUAL_VOLATILE
= 0x2,
432 TYPE_QUAL_RESTRICT
= 0x4,
433 TYPE_QUAL_ATOMIC
= 0x8
436 /* Enumerate visibility settings. */
437 #ifndef SYMBOL_VISIBILITY_DEFINED
438 #define SYMBOL_VISIBILITY_DEFINED
439 enum symbol_visibility
{
441 VISIBILITY_PROTECTED
,
445 #endif // SYMBOL_VISIBILITY_DEFINED
447 /* Standard named or nameless data types of the C compiler. */
477 TI_INTEGER_MINUS_ONE
,
494 TI_COMPLEX_INTEGER_TYPE
,
495 TI_COMPLEX_FLOAT_TYPE
,
496 TI_COMPLEX_DOUBLE_TYPE
,
497 TI_COMPLEX_LONG_DOUBLE_TYPE
,
505 TI_LONG_DOUBLE_PTR_TYPE
,
515 TI_VA_LIST_GPR_COUNTER_FIELD
,
516 TI_VA_LIST_FPR_COUNTER_FIELD
,
519 TI_POINTER_SIZED_TYPE
,
524 TI_DFLOAT32_PTR_TYPE
,
525 TI_DFLOAT64_PTR_TYPE
,
526 TI_DFLOAT128_PTR_TYPE
,
539 TI_SAT_ULLFRACT_TYPE
,
555 TI_SAT_ULLACCUM_TYPE
,
601 TI_OPTIMIZATION_DEFAULT
,
602 TI_OPTIMIZATION_CURRENT
,
603 TI_TARGET_OPTION_DEFAULT
,
604 TI_TARGET_OPTION_CURRENT
,
605 TI_CURRENT_TARGET_PRAGMA
,
606 TI_CURRENT_OPTIMIZE_PRAGMA
,
611 /* An enumeration of the standard C integer types. These must be
612 ordered so that shorter types appear before longer ones, and so
613 that signed types appear before unsigned ones, for the correct
614 functioning of interpret_integer() in c-lex.c. */
615 enum integer_type_kind
{
626 itk_unsigned_long_long
,
640 /* A pointer-to-function member type looks like:
647 If __pfn is NULL, it is a NULL pointer-to-member-function.
649 (Because the vtable is always the first thing in the object, we
650 don't need its offset.) If the function is virtual, then PFN is
651 one plus twice the index into the vtable; otherwise, it is just a
652 pointer to the function.
654 Unfortunately, using the lowest bit of PFN doesn't work in
655 architectures that don't impose alignment requirements on function
656 addresses, or that use the lowest bit to tell one ISA from another,
657 for example. For such architectures, we use the lowest bit of
658 DELTA instead of the lowest bit of the PFN, and DELTA will be
660 enum ptrmemfunc_vbit_where_t
{
661 ptrmemfunc_vbit_in_pfn
,
662 ptrmemfunc_vbit_in_delta
665 /* Flags that may be passed in the third argument of decl_attributes, and
666 to handler functions for attributes. */
667 enum attribute_flags
{
668 /* The type passed in is the type of a DECL, and any attributes that
669 should be passed in again to be applied to the DECL rather than the
670 type should be returned. */
671 ATTR_FLAG_DECL_NEXT
= 1,
672 /* The type passed in is a function return type, and any attributes that
673 should be passed in again to be applied to the function type rather
674 than the return type should be returned. */
675 ATTR_FLAG_FUNCTION_NEXT
= 2,
676 /* The type passed in is an array element type, and any attributes that
677 should be passed in again to be applied to the array type rather
678 than the element type should be returned. */
679 ATTR_FLAG_ARRAY_NEXT
= 4,
680 /* The type passed in is a structure, union or enumeration type being
681 created, and should be modified in place. */
682 ATTR_FLAG_TYPE_IN_PLACE
= 8,
683 /* The attributes are being applied by default to a library function whose
684 name indicates known behavior, and should be silently ignored if they
685 are not in fact compatible with the function type. */
686 ATTR_FLAG_BUILT_IN
= 16,
687 /* A given attribute has been parsed as a C++-11 attribute. */
691 /* Types used to represent sizes. */
692 enum size_type_kind
{
693 stk_sizetype
, /* Normal representation of sizes in bytes. */
694 stk_ssizetype
, /* Signed representation of sizes in bytes. */
695 stk_bitsizetype
, /* Normal representation of sizes in bits. */
696 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
700 enum operand_equal_flag
{
703 OEP_CONSTANT_ADDRESS_OF
= 4
706 /* Enum and arrays used for tree allocation stats.
707 Keep in sync with tree.c:tree_node_kind_names. */
708 enum tree_node_kind
{
728 enum annot_expr_kind
{
729 annot_expr_ivdep_kind
,
730 annot_expr_no_vector_kind
,
731 annot_expr_vector_kind
,
735 /* Internal functions. */
737 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
738 #include "internal-fn.def"
739 #undef DEF_INTERNAL_FN
743 /*---------------------------------------------------------------------------
745 ---------------------------------------------------------------------------*/
746 /* When processing aliases at the symbol table level, we need the
747 declaration of target. For this reason we need to queue aliases and
748 process them after all declarations has been produced. */
749 struct GTY(()) alias_pair
{
754 /* An initialization priority. */
755 typedef unsigned short priority_type
;
757 /* The type of a callback function for walking over tree structure. */
758 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
760 /* The type of a callback function that represents a custom walk_tree. */
761 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
762 void *, hash_set
<tree
> *);
765 /*---------------------------------------------------------------------------
767 ---------------------------------------------------------------------------*/
768 /* A tree node can represent a data type, a variable, an expression
769 or a statement. Each node has a TREE_CODE which says what kind of
770 thing it represents. Some common codes are:
771 INTEGER_TYPE -- represents a type of integers.
772 ARRAY_TYPE -- represents a type of pointer.
773 VAR_DECL -- represents a declared variable.
774 INTEGER_CST -- represents a constant integer value.
775 PLUS_EXPR -- represents a sum (an expression).
777 As for the contents of a tree node: there are some fields
778 that all nodes share. Each TREE_CODE has various special-purpose
779 fields as well. The fields of a node are never accessed directly,
780 always through accessor macros. */
782 /* Every kind of tree node starts with this structure,
783 so all nodes have these fields.
785 See the accessor macros, defined below, for documentation of the
786 fields, and the table below which connects the fields and the
789 struct GTY(()) tree_base
{
790 ENUM_BITFIELD(tree_code
) code
: 16;
792 unsigned side_effects_flag
: 1;
793 unsigned constant_flag
: 1;
794 unsigned addressable_flag
: 1;
795 unsigned volatile_flag
: 1;
796 unsigned readonly_flag
: 1;
797 unsigned asm_written_flag
: 1;
798 unsigned nowarning_flag
: 1;
799 unsigned visited
: 1;
801 unsigned used_flag
: 1;
802 unsigned nothrow_flag
: 1;
803 unsigned static_flag
: 1;
804 unsigned public_flag
: 1;
805 unsigned private_flag
: 1;
806 unsigned protected_flag
: 1;
807 unsigned deprecated_flag
: 1;
808 unsigned default_def_flag
: 1;
811 /* The bits in the following structure should only be used with
812 accessor macros that constrain inputs with tree checking. */
814 unsigned lang_flag_0
: 1;
815 unsigned lang_flag_1
: 1;
816 unsigned lang_flag_2
: 1;
817 unsigned lang_flag_3
: 1;
818 unsigned lang_flag_4
: 1;
819 unsigned lang_flag_5
: 1;
820 unsigned lang_flag_6
: 1;
821 unsigned saturating_flag
: 1;
823 unsigned unsigned_flag
: 1;
824 unsigned packed_flag
: 1;
825 unsigned user_align
: 1;
826 unsigned nameless_flag
: 1;
827 unsigned atomic_flag
: 1;
832 /* This field is only used with TREE_TYPE nodes; the only reason it is
833 present in tree_base instead of tree_type is to save space. The size
834 of the field must be large enough to hold addr_space_t values. */
835 unsigned address_space
: 8;
838 /* The following fields are present in tree_base to save space. The
839 nodes using them do not require any of the flags above and so can
840 make better use of the 4-byte sized word. */
842 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
844 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
845 its native precision. */
846 unsigned char unextended
;
848 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
849 wider precisions based on its TYPE_SIGN. */
850 unsigned char extended
;
852 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
853 offset_int precision, with smaller integers being extended
854 according to their TYPE_SIGN. This is equal to one of the two
855 fields above but is cached for speed. */
856 unsigned char offset
;
859 /* VEC length. This field is only used with TREE_VEC. */
862 /* SSA version number. This field is only used with SSA_NAME. */
863 unsigned int version
;
865 /* Internal function code. */
866 enum internal_fn ifn
;
870 /* The following table lists the uses of each of the above flags and
871 for which types of nodes they are defined.
876 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
879 CONSTRUCTOR, IDENTIFIER_NODE
882 CALL_EXPR_TAILCALL in
888 PREDICT_EXPR_OUTCOME in
894 VAR_DECL, FUNCTION_DECL
897 TREE_NO_TRAMPOLINE in
903 TREE_SYMBOL_REFERENCED in
907 TARGET_EXPR, WITH_CLEANUP_EXPR
909 TRY_CATCH_IS_CLEANUP in
915 TYPE_REF_CAN_ALIAS_ALL in
916 POINTER_TYPE, REFERENCE_TYPE
924 TRANSACTION_EXPR_OUTER in
927 SSA_NAME_ANTI_RANGE_P in
933 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
936 VAR_DECL, FUNCTION_DECL
939 CONSTRUCTOR_NO_CLEARING in
945 CALL_EXPR_VA_ARG_PACK in
948 TYPE_CACHED_VALUES_P in
951 SAVE_EXPR_RESOLVED_P in
954 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
955 OMP_CLAUSE_LASTPRIVATE
957 OMP_CLAUSE_PRIVATE_DEBUG in
960 OMP_CLAUSE_LINEAR_NO_COPYIN in
963 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
966 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
969 TRANSACTION_EXPR_RELAXED in
977 CALL_EXPR_RETURN_SLOT_OPT in
983 OMP_PARALLEL_COMBINED in
986 OMP_ATOMIC_SEQ_CST in
989 OMP_CLAUSE_PRIVATE_OUTER_REF in
992 OMP_CLAUSE_LINEAR_NO_COPYOUT in
995 TYPE_REF_IS_RVALUE in
1007 CALL_FROM_THUNK_P and
1008 CALL_ALLOCA_FOR_VAR_P in
1011 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1016 TREE_SIDE_EFFECTS in
1026 TREE_THIS_VOLATILE in
1049 TYPE_SIZES_GIMPLIFIED in
1063 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1064 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1067 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1087 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1089 SSA_NAME_IN_FREELIST in
1101 IDENTIFIER_TRANSPARENT_ALIAS in
1107 all trees (used liberally by many passes)
1114 VAR_DECL_IS_VIRTUAL_OPERAND in
1128 TYPE_VECTOR_OPAQUE in
1131 SSA_NAME_IS_DEFAULT_DEF in
1134 DECL_NONLOCAL_FRAME in
1138 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1141 struct GTY(()) tree_typed
{
1142 struct tree_base base
;
1146 struct GTY(()) tree_common
{
1147 struct tree_typed typed
;
1151 struct GTY(()) tree_int_cst
{
1152 struct tree_typed typed
;
1153 HOST_WIDE_INT val
[1];
1157 struct GTY(()) tree_real_cst
{
1158 struct tree_typed typed
;
1159 struct real_value
* real_cst_ptr
;
1162 struct GTY(()) tree_fixed_cst
{
1163 struct tree_typed typed
;
1164 struct fixed_value
* fixed_cst_ptr
;
1167 struct GTY(()) tree_string
{
1168 struct tree_typed typed
;
1173 struct GTY(()) tree_complex
{
1174 struct tree_typed typed
;
1179 struct GTY(()) tree_vector
{
1180 struct tree_typed typed
;
1181 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1184 struct GTY(()) tree_identifier
{
1185 struct tree_common common
;
1186 struct ht_identifier id
;
1189 struct GTY(()) tree_list
{
1190 struct tree_common common
;
1195 struct GTY(()) tree_vec
{
1196 struct tree_common common
;
1197 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1200 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1201 element. INDEX can optionally design the position of VALUE: in arrays,
1202 it is the index where VALUE has to be placed; in structures, it is the
1203 FIELD_DECL of the member. */
1204 struct GTY(()) constructor_elt
{
1209 struct GTY(()) tree_constructor
{
1210 struct tree_typed typed
;
1211 vec
<constructor_elt
, va_gc
> *elts
;
1214 enum omp_clause_depend_kind
1216 OMP_CLAUSE_DEPEND_IN
,
1217 OMP_CLAUSE_DEPEND_OUT
,
1218 OMP_CLAUSE_DEPEND_INOUT
,
1219 OMP_CLAUSE_DEPEND_LAST
1222 enum omp_clause_map_kind
1224 /* If not already present, allocate. */
1225 OMP_CLAUSE_MAP_ALLOC
= 0,
1226 /* ..., and copy to device. */
1227 OMP_CLAUSE_MAP_TO
= 1 << 0,
1228 /* ..., and copy from device. */
1229 OMP_CLAUSE_MAP_FROM
= 1 << 1,
1230 /* ..., and copy to and from device. */
1231 OMP_CLAUSE_MAP_TOFROM
= OMP_CLAUSE_MAP_TO
| OMP_CLAUSE_MAP_FROM
,
1232 /* Special map kinds. */
1233 OMP_CLAUSE_MAP_SPECIAL
= 1 << 2,
1234 /* The following kind is an internal only map kind, used for pointer based
1235 array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
1236 which is implicitly POINTER_SIZE_UNITS, but the bias. */
1237 OMP_CLAUSE_MAP_POINTER
= OMP_CLAUSE_MAP_SPECIAL
,
1238 /* Also internal, behaves like OMP_CLAUS_MAP_TO, but additionally any
1239 OMP_CLAUSE_MAP_POINTER records consecutive after it which have addresses
1240 falling into that range will not be ignored if OMP_CLAUSE_MAP_TO_PSET
1241 wasn't mapped already. */
1242 OMP_CLAUSE_MAP_TO_PSET
,
1243 /* The following are only valid for OpenACC. */
1244 /* Flag to force a specific behavior (or else, a run-time error). */
1245 OMP_CLAUSE_MAP_FORCE
= 1 << 3,
1247 OMP_CLAUSE_MAP_FORCE_ALLOC
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_ALLOC
,
1248 /* ..., and copy to device. */
1249 OMP_CLAUSE_MAP_FORCE_TO
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_TO
,
1250 /* ..., and copy from device. */
1251 OMP_CLAUSE_MAP_FORCE_FROM
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_FROM
,
1252 /* ..., and copy to and from device. */
1253 OMP_CLAUSE_MAP_FORCE_TOFROM
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_TOFROM
,
1254 /* Must already be present. */
1255 OMP_CLAUSE_MAP_FORCE_PRESENT
= OMP_CLAUSE_MAP_FORCE
| OMP_CLAUSE_MAP_SPECIAL
,
1256 /* Deallocate a mapping, without copying from device. */
1257 OMP_CLAUSE_MAP_FORCE_DEALLOC
,
1258 /* Is a device pointer. OMP_CLAUSE_SIZE for these is unused; is implicitly
1259 POINTER_SIZE / BITS_PER_UNIT. */
1260 OMP_CLAUSE_MAP_FORCE_DEVICEPTR
,
1266 enum omp_clause_proc_bind_kind
1268 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1269 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1270 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1271 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1272 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1273 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1274 OMP_CLAUSE_PROC_BIND_LAST
1277 struct GTY(()) tree_exp
{
1278 struct tree_typed typed
;
1280 tree
GTY ((special ("tree_exp"),
1281 desc ("TREE_CODE ((tree) &%0)")))
1285 /* Immediate use linking structure. This structure is used for maintaining
1286 a doubly linked list of uses of an SSA_NAME. */
1287 struct GTY(()) ssa_use_operand_t
{
1288 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1289 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1290 /* Immediate uses for a given SSA name are maintained as a cyclic
1291 list. To recognize the root of this list, the location field
1292 needs to point to the original SSA name. Since statements and
1293 SSA names are of different data types, we need this union. See
1294 the explanation in struct imm_use_iterator. */
1295 union { gimple stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1296 tree
*GTY((skip(""))) use
;
1299 struct GTY(()) tree_ssa_name
{
1300 struct tree_typed typed
;
1302 /* _DECL wrapped by this SSA name. */
1305 /* Statement that defines this SSA name. */
1308 /* Value range information. */
1309 union ssa_name_info_type
{
1310 /* Pointer attributes used for alias analysis. */
1311 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1312 /* Value range attributes used for zero/sign extension elimination. */
1313 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1314 } GTY ((desc ("%1.typed.type ?" \
1315 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1317 /* Immediate uses list for this SSA_NAME. */
1318 struct ssa_use_operand_t imm_uses
;
1321 struct GTY(()) phi_arg_d
{
1322 /* imm_use MUST be the first element in struct because we do some
1323 pointer arithmetic with it. See phi_arg_index_from_use. */
1324 struct ssa_use_operand_t imm_use
;
1329 struct GTY(()) tree_omp_clause
{
1330 struct tree_common common
;
1332 enum omp_clause_code code
;
1333 union omp_clause_subcode
{
1334 enum omp_clause_default_kind default_kind
;
1335 enum omp_clause_schedule_kind schedule_kind
;
1336 enum omp_clause_depend_kind depend_kind
;
1337 enum omp_clause_map_kind map_kind
;
1338 enum omp_clause_proc_bind_kind proc_bind_kind
;
1339 enum tree_code reduction_code
;
1340 } GTY ((skip
)) subcode
;
1342 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1344 gimple_seq gimple_reduction_init
;
1345 gimple_seq gimple_reduction_merge
;
1347 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1351 struct GTY(()) tree_block
{
1352 struct tree_base base
;
1355 unsigned abstract_flag
: 1;
1356 unsigned block_num
: 31;
1359 location_t end_locus
;
1362 vec
<tree
, va_gc
> *nonlocalized_vars
;
1366 tree abstract_origin
;
1367 tree fragment_origin
;
1368 tree fragment_chain
;
1371 struct GTY(()) tree_type_common
{
1372 struct tree_common common
;
1378 unsigned int precision
: 10;
1379 unsigned no_force_blk_flag
: 1;
1380 unsigned needs_constructing_flag
: 1;
1381 unsigned transparent_aggr_flag
: 1;
1382 unsigned restrict_flag
: 1;
1383 unsigned contains_placeholder_bits
: 2;
1385 ENUM_BITFIELD(machine_mode
) mode
: 8;
1387 unsigned string_flag
: 1;
1388 unsigned lang_flag_0
: 1;
1389 unsigned lang_flag_1
: 1;
1390 unsigned lang_flag_2
: 1;
1391 unsigned lang_flag_3
: 1;
1392 unsigned lang_flag_4
: 1;
1393 unsigned lang_flag_5
: 1;
1394 unsigned lang_flag_6
: 1;
1397 alias_set_type alias_set
;
1400 union tree_type_symtab
{
1401 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1402 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1403 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1404 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1412 struct GTY(()) tree_type_with_lang_specific
{
1413 struct tree_type_common common
;
1414 /* Points to a structure whose details depend on the language in use. */
1415 struct lang_type
*lang_specific
;
1418 struct GTY(()) tree_type_non_common
{
1419 struct tree_type_with_lang_specific with_lang_specific
;
1426 struct GTY (()) tree_binfo
{
1427 struct tree_common common
;
1433 vec
<tree
, va_gc
> *base_accesses
;
1439 vec
<tree
, va_gc
> base_binfos
;
1442 struct GTY(()) tree_decl_minimal
{
1443 struct tree_common common
;
1450 struct GTY(()) tree_decl_common
{
1451 struct tree_decl_minimal common
;
1454 ENUM_BITFIELD(machine_mode
) mode
: 8;
1456 unsigned nonlocal_flag
: 1;
1457 unsigned virtual_flag
: 1;
1458 unsigned ignored_flag
: 1;
1459 unsigned abstract_flag
: 1;
1460 unsigned artificial_flag
: 1;
1461 unsigned preserve_flag
: 1;
1462 unsigned debug_expr_is_from
: 1;
1464 unsigned lang_flag_0
: 1;
1465 unsigned lang_flag_1
: 1;
1466 unsigned lang_flag_2
: 1;
1467 unsigned lang_flag_3
: 1;
1468 unsigned lang_flag_4
: 1;
1469 unsigned lang_flag_5
: 1;
1470 unsigned lang_flag_6
: 1;
1471 unsigned lang_flag_7
: 1;
1472 unsigned lang_flag_8
: 1;
1474 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1475 unsigned decl_flag_0
: 1;
1476 /* In FIELD_DECL, this is DECL_BIT_FIELD
1477 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1478 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1479 unsigned decl_flag_1
: 1;
1480 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1481 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1482 DECL_HAS_VALUE_EXPR_P. */
1483 unsigned decl_flag_2
: 1;
1485 unsigned decl_flag_3
: 1;
1486 /* Logically, these two would go in a theoretical base shared by var and
1488 unsigned gimple_reg_flag
: 1;
1489 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1490 unsigned decl_by_reference_flag
: 1;
1491 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1492 unsigned decl_read_flag
: 1;
1493 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1494 unsigned decl_nonshareable_flag
: 1;
1496 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1497 unsigned int off_align
: 8;
1499 /* 24 bits unused. */
1501 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1504 /* UID for points-to sets, stable over copying from inlining. */
1505 unsigned int pt_uid
;
1510 tree abstract_origin
;
1512 /* Points to a structure whose details depend on the language in use. */
1513 struct lang_decl
*lang_specific
;
1516 struct GTY(()) tree_decl_with_rtl
{
1517 struct tree_decl_common common
;
1521 struct GTY(()) tree_field_decl
{
1522 struct tree_decl_common common
;
1525 tree bit_field_type
;
1531 struct GTY(()) tree_label_decl
{
1532 struct tree_decl_with_rtl common
;
1534 int eh_landing_pad_nr
;
1537 struct GTY(()) tree_result_decl
{
1538 struct tree_decl_with_rtl common
;
1541 struct GTY(()) tree_const_decl
{
1542 struct tree_decl_common common
;
1545 struct GTY(()) tree_parm_decl
{
1546 struct tree_decl_with_rtl common
;
1550 struct GTY(()) tree_decl_with_vis
{
1551 struct tree_decl_with_rtl common
;
1552 tree assembler_name
;
1553 struct symtab_node
*symtab_node
;
1555 /* Belong to VAR_DECL exclusively. */
1556 unsigned defer_output
: 1;
1557 unsigned hard_register
: 1;
1558 unsigned common_flag
: 1;
1559 unsigned in_text_section
: 1;
1560 unsigned in_constant_pool
: 1;
1561 unsigned dllimport_flag
: 1;
1562 /* Don't belong to VAR_DECL exclusively. */
1563 unsigned weak_flag
: 1;
1565 unsigned seen_in_bind_expr
: 1;
1566 unsigned comdat_flag
: 1;
1567 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1568 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1569 unsigned visibility_specified
: 1;
1571 /* Belong to FUNCTION_DECL exclusively. */
1572 unsigned init_priority_p
: 1;
1573 /* Used by C++ only. Might become a generic decl flag. */
1574 unsigned shadowed_for_var_p
: 1;
1575 /* Belong to FUNCTION_DECL exclusively. */
1576 unsigned cxx_constructor
: 1;
1577 /* Belong to FUNCTION_DECL exclusively. */
1578 unsigned cxx_destructor
: 1;
1579 /* Belong to FUNCTION_DECL exclusively. */
1581 /* Belong to FUNCTION_DECL exclusively. */
1582 unsigned regdecl_flag
: 1;
1583 /* 14 unused bits. */
1586 struct GTY(()) tree_var_decl
{
1587 struct tree_decl_with_vis common
;
1590 struct GTY(()) tree_decl_non_common
{
1591 struct tree_decl_with_vis common
;
1592 /* Almost all FE's use this. */
1596 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1597 arguments/result/saved_tree fields by front ends. It was either inherit
1598 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1599 which seemed a bit strange. */
1601 struct GTY(()) tree_function_decl
{
1602 struct tree_decl_non_common common
;
1606 /* Arguments of the function. */
1608 /* The personality function. Used for stack unwinding. */
1611 /* Function specific options that are used by this function. */
1612 tree function_specific_target
; /* target options */
1613 tree function_specific_optimization
; /* optimization options */
1615 /* Generic function body. */
1617 /* Index within a virtual table. */
1620 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1621 DECL_FUNCTION_CODE. Otherwise unused.
1622 ??? The bitfield needs to be able to hold all target function
1624 ENUM_BITFIELD(built_in_function
) function_code
: 12;
1625 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1627 unsigned static_ctor_flag
: 1;
1628 unsigned static_dtor_flag
: 1;
1630 unsigned uninlinable
: 1;
1631 unsigned possibly_inlined
: 1;
1632 unsigned novops_flag
: 1;
1633 unsigned returns_twice_flag
: 1;
1634 unsigned malloc_flag
: 1;
1635 unsigned operator_new_flag
: 1;
1636 unsigned declared_inline_flag
: 1;
1637 unsigned no_inline_warning_flag
: 1;
1639 unsigned no_instrument_function_entry_exit
: 1;
1640 unsigned no_limit_stack
: 1;
1641 unsigned disregard_inline_limits
: 1;
1642 unsigned pure_flag
: 1;
1643 unsigned looping_const_or_pure_flag
: 1;
1644 unsigned has_debug_args_flag
: 1;
1645 unsigned tm_clone_flag
: 1;
1646 unsigned versioned_function
: 1;
1650 struct GTY(()) tree_translation_unit_decl
{
1651 struct tree_decl_common common
;
1652 /* Source language of this translation unit. Used for DWARF output. */
1653 const char * GTY((skip(""))) language
;
1654 /* TODO: Non-optimization used to build this translation unit. */
1655 /* TODO: Root of a partial DWARF tree for global types and decls. */
1658 struct GTY(()) tree_type_decl
{
1659 struct tree_decl_non_common common
;
1663 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1665 struct tree_statement_list_node
*prev
;
1666 struct tree_statement_list_node
*next
;
1670 struct GTY(()) tree_statement_list
1672 struct tree_typed typed
;
1673 struct tree_statement_list_node
*head
;
1674 struct tree_statement_list_node
*tail
;
1678 /* Optimization options used by a function. */
1680 struct GTY(()) tree_optimization_option
{
1681 struct tree_common common
;
1683 /* The optimization options used by the user. */
1684 struct cl_optimization opts
;
1686 /* Target optabs for this set of optimization options. This is of
1687 type `struct target_optabs *'. */
1688 void *GTY ((atomic
)) optabs
;
1690 /* The value of this_target_optabs against which the optabs above were
1692 struct target_optabs
*GTY ((skip
)) base_optabs
;
1695 /* Forward declaration, defined in target-globals.h. */
1697 struct GTY(()) target_globals
;
1699 /* Target options used by a function. */
1701 struct GTY(()) tree_target_option
{
1702 struct tree_common common
;
1704 /* Target globals for the corresponding target option. */
1705 struct target_globals
*globals
;
1707 /* The optimization options used by the user. */
1708 struct cl_target_option opts
;
1711 /* Define the overall contents of a tree node.
1712 It may be any of the structures declared above
1713 for various types of node. */
1714 union GTY ((ptr_alias (union lang_tree_node
),
1715 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1716 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1717 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1718 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1719 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1720 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1721 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1722 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1723 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1724 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1725 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1726 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1727 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1728 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1729 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1731 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1732 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1733 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1734 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1735 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1736 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1737 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1738 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1739 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1740 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1741 translation_unit_decl
;
1742 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1743 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1744 type_with_lang_specific
;
1745 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1747 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1748 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1749 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1750 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1751 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1752 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1753 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1754 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1755 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1756 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1757 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1760 /* Structure describing an attribute and a function to handle it. */
1761 struct attribute_spec
{
1762 /* The name of the attribute (without any leading or trailing __),
1763 or NULL to mark the end of a table of attributes. */
1765 /* The minimum length of the list of arguments of the attribute. */
1767 /* The maximum length of the list of arguments of the attribute
1768 (-1 for no maximum). */
1770 /* Whether this attribute requires a DECL. If it does, it will be passed
1771 from types of DECLs, function return types and array element types to
1772 the DECLs, function types and array types respectively; but when
1773 applied to a type in any other circumstances, it will be ignored with
1774 a warning. (If greater control is desired for a given attribute,
1775 this should be false, and the flags argument to the handler may be
1776 used to gain greater control in that case.) */
1778 /* Whether this attribute requires a type. If it does, it will be passed
1779 from a DECL to the type of that DECL. */
1781 /* Whether this attribute requires a function (or method) type. If it does,
1782 it will be passed from a function pointer type to the target type,
1783 and from a function return type (which is not itself a function
1784 pointer type) to the function type. */
1785 bool function_type_required
;
1786 /* Function to handle this attribute. NODE points to the node to which
1787 the attribute is to be applied. If a DECL, it should be modified in
1788 place; if a TYPE, a copy should be created. NAME is the name of the
1789 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1790 of the arguments (which may be NULL). FLAGS gives further information
1791 about the context of the attribute. Afterwards, the attributes will
1792 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1793 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1794 as well as in any other cases when the attributes should not be added
1795 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1796 applied to another type or DECL later may be returned;
1797 otherwise the return value should be NULL_TREE. This pointer may be
1798 NULL if no special handling is required beyond the checks implied
1799 by the rest of this structure. */
1800 tree (*handler
) (tree
*node
, tree name
, tree args
,
1801 int flags
, bool *no_add_attrs
);
1802 /* Specifies if attribute affects type's identity. */
1803 bool affects_type_identity
;
1806 /* These functions allow a front-end to perform a manual layout of a
1807 RECORD_TYPE. (For instance, if the placement of subsequent fields
1808 depends on the placement of fields so far.) Begin by calling
1809 start_record_layout. Then, call place_field for each of the
1810 fields. Then, call finish_record_layout. See layout_type for the
1811 default way in which these functions are used. */
1812 typedef struct record_layout_info_s
{
1813 /* The RECORD_TYPE that we are laying out. */
1815 /* The offset into the record so far, in bytes, not including bits in
1818 /* The last known alignment of SIZE. */
1819 unsigned int offset_align
;
1820 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1822 /* The alignment of the record so far, in bits. */
1823 unsigned int record_align
;
1824 /* The alignment of the record so far, ignoring #pragma pack and
1825 __attribute__ ((packed)), in bits. */
1826 unsigned int unpacked_align
;
1827 /* The previous field laid out. */
1829 /* The static variables (i.e., class variables, as opposed to
1830 instance variables) encountered in T. */
1831 vec
<tree
, va_gc
> *pending_statics
;
1832 /* Bits remaining in the current alignment group */
1833 int remaining_in_alignment
;
1834 /* True if we've seen a packed field that didn't have normal
1835 alignment anyway. */
1836 int packed_maybe_necessary
;
1837 } *record_layout_info
;
1839 /* Iterator for going through the function arguments. */
1840 struct function_args_iterator
{
1841 tree next
; /* TREE_LIST pointing to the next argument */
1844 /* Structures to map from a tree to another tree. */
1845 struct GTY(()) tree_map_base
{
1849 /* Map from a tree to another tree. */
1851 struct GTY(()) tree_map
{
1852 struct tree_map_base base
;
1857 /* Map from a decl tree to another tree. */
1858 struct GTY(()) tree_decl_map
{
1859 struct tree_map_base base
;
1863 /* Map from a tree to an int. */
1864 struct GTY(()) tree_int_map
{
1865 struct tree_map_base base
;
1869 /* Map from a decl tree to a tree vector. */
1870 struct GTY(()) tree_vec_map
{
1871 struct tree_map_base base
;
1872 vec
<tree
, va_gc
> *to
;
1875 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1876 have to go towards the end of tree.h so that union tree_node is fully
1877 defined by this point. */
1879 /* Structure containing iterator state. */
1880 struct call_expr_arg_iterator
{
1881 tree t
; /* the call_expr */
1882 int n
; /* argument count */
1883 int i
; /* next argument index */
1886 struct const_call_expr_arg_iterator
{
1887 const_tree t
; /* the call_expr */
1888 int n
; /* argument count */
1889 int i
; /* next argument index */
1892 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1893 function, and a flag that says if the function is available implicitly, or
1894 whether the user has to code explicit calls to __builtin_<xxx>. */
1895 struct GTY(()) builtin_info_type
{
1896 tree decl
[(int)END_BUILTINS
];
1897 bool implicit_p
[(int)END_BUILTINS
];
1901 /*---------------------------------------------------------------------------
1903 ---------------------------------------------------------------------------*/
1904 /* Matrix describing the structures contained in a given tree code. */
1905 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1907 /* Class of tree given its code. */
1908 extern const enum tree_code_class tree_code_type
[];
1910 /* Each tree code class has an associated string representation.
1911 These must correspond to the tree_code_class entries. */
1912 extern const char *const tree_code_class_strings
[];
1914 /* Number of argument-words in each kind of tree-node. */
1915 extern const unsigned char tree_code_length
[];
1917 /* Vector of all alias pairs for global symbols. */
1918 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1920 /* Names of all the built_in classes. */
1921 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1923 /* Names of all the built_in functions. */
1924 extern const char * built_in_names
[(int) END_BUILTINS
];
1926 /* Number of operands and names for each OMP_CLAUSE node. */
1927 extern unsigned const char omp_clause_num_ops
[];
1928 extern const char * const omp_clause_code_name
[];
1930 /* A vector of all translation-units. */
1931 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
1933 /* Vector of standard trees used by the C compiler. */
1934 extern GTY(()) tree global_trees
[TI_MAX
];
1936 /* The standard C integer types. Use integer_type_kind to index into
1938 extern GTY(()) tree integer_types
[itk_none
];
1940 /* Types used to represent sizes. */
1941 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
1943 /* Arrays for keeping track of tree node statistics. */
1944 extern int tree_node_counts
[];
1945 extern int tree_node_sizes
[];
1947 /* True if we are in gimple form and the actions of the folders need to
1948 be restricted. False if we are not in gimple form and folding is not
1949 restricted to creating gimple expressions. */
1950 extern bool in_gimple_form
;
1952 /* Functional interface to the builtin functions. */
1953 extern GTY(()) builtin_info_type builtin_info
;
1955 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
1956 extern unsigned int maximum_field_alignment
;
1958 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
1959 Zero means allow extended lvalues. */
1960 extern int pedantic_lvalues
;
1962 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
1963 extern GTY(()) tree current_function_decl
;
1965 /* Nonzero means a FUNC_BEGIN label was emitted. */
1966 extern GTY(()) const char * current_function_func_begin_label
;
1968 #endif // GCC_TREE_CORE_H