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 clause: private (variable_list). */
219 /* OpenMP clause: shared (variable_list). */
222 /* OpenMP clause: firstprivate (variable_list). */
223 OMP_CLAUSE_FIRSTPRIVATE
,
225 /* OpenMP clause: lastprivate (variable_list). */
226 OMP_CLAUSE_LASTPRIVATE
,
228 /* OpenMP clause: reduction (operator:variable_list).
229 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
230 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
231 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
233 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
234 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. */
235 OMP_CLAUSE_REDUCTION
,
237 /* OpenMP clause: copyin (variable_list). */
240 /* OpenMP clause: copyprivate (variable_list). */
241 OMP_CLAUSE_COPYPRIVATE
,
243 /* OpenMP clause: linear (variable-list[:linear-step]). */
246 /* OpenMP clause: aligned (variable-list[:alignment]). */
249 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
252 /* OpenMP clause: uniform (argument-list). */
255 /* OpenMP clause: from (variable-list). */
258 /* OpenMP clause: to (variable-list). */
261 /* OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
264 /* Internal clause: temporary for combined loops expansion. */
265 OMP_CLAUSE__LOOPTEMP_
,
267 /* OpenMP clause: if (scalar-expression). */
270 /* OpenMP clause: num_threads (integer-expression). */
271 OMP_CLAUSE_NUM_THREADS
,
273 /* OpenMP clause: schedule. */
276 /* OpenMP clause: nowait. */
279 /* OpenMP clause: ordered. */
282 /* OpenMP clause: default. */
285 /* OpenMP clause: collapse (constant-integer-expression). */
288 /* OpenMP clause: untied. */
291 /* OpenMP clause: final (scalar-expression). */
294 /* OpenMP clause: mergeable. */
295 OMP_CLAUSE_MERGEABLE
,
297 /* OpenMP clause: device (integer-expression). */
300 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
301 OMP_CLAUSE_DIST_SCHEDULE
,
303 /* OpenMP clause: inbranch. */
306 /* OpenMP clause: notinbranch. */
307 OMP_CLAUSE_NOTINBRANCH
,
309 /* OpenMP clause: num_teams(integer-expression). */
310 OMP_CLAUSE_NUM_TEAMS
,
312 /* OpenMP clause: thread_limit(integer-expression). */
313 OMP_CLAUSE_THREAD_LIMIT
,
315 /* OpenMP clause: proc_bind ({master,close,spread}). */
316 OMP_CLAUSE_PROC_BIND
,
318 /* OpenMP clause: safelen (constant-integer-expression). */
321 /* OpenMP clause: simdlen (constant-integer-expression). */
324 /* OpenMP clause: for. */
327 /* OpenMP clause: parallel. */
330 /* OpenMP clause: sections. */
333 /* OpenMP clause: taskgroup. */
334 OMP_CLAUSE_TASKGROUP
,
336 /* Internally used only clause, holding SIMD uid. */
337 OMP_CLAUSE__SIMDUID_
,
339 /* Internally used only clause, holding _Cilk_for # of iterations
341 OMP_CLAUSE__CILK_FOR_COUNT_
345 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
346 enum tree_node_structure_enum
{
347 #include "treestruct.def"
352 enum omp_clause_schedule_kind
{
353 OMP_CLAUSE_SCHEDULE_STATIC
,
354 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
355 OMP_CLAUSE_SCHEDULE_GUIDED
,
356 OMP_CLAUSE_SCHEDULE_AUTO
,
357 OMP_CLAUSE_SCHEDULE_RUNTIME
,
358 OMP_CLAUSE_SCHEDULE_CILKFOR
,
359 OMP_CLAUSE_SCHEDULE_LAST
362 enum omp_clause_default_kind
{
363 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
364 OMP_CLAUSE_DEFAULT_SHARED
,
365 OMP_CLAUSE_DEFAULT_NONE
,
366 OMP_CLAUSE_DEFAULT_PRIVATE
,
367 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
368 OMP_CLAUSE_DEFAULT_LAST
371 /* There is a TYPE_QUAL value for each type qualifier. They can be
372 combined by bitwise-or to form the complete set of qualifiers for a
375 TYPE_UNQUALIFIED
= 0x0,
376 TYPE_QUAL_CONST
= 0x1,
377 TYPE_QUAL_VOLATILE
= 0x2,
378 TYPE_QUAL_RESTRICT
= 0x4,
379 TYPE_QUAL_ATOMIC
= 0x8
382 /* Enumerate visibility settings. */
383 #ifndef SYMBOL_VISIBILITY_DEFINED
384 #define SYMBOL_VISIBILITY_DEFINED
385 enum symbol_visibility
{
387 VISIBILITY_PROTECTED
,
391 #endif // SYMBOL_VISIBILITY_DEFINED
393 /* Standard named or nameless data types of the C compiler. */
423 TI_INTEGER_MINUS_ONE
,
440 TI_COMPLEX_INTEGER_TYPE
,
441 TI_COMPLEX_FLOAT_TYPE
,
442 TI_COMPLEX_DOUBLE_TYPE
,
443 TI_COMPLEX_LONG_DOUBLE_TYPE
,
451 TI_LONG_DOUBLE_PTR_TYPE
,
461 TI_VA_LIST_GPR_COUNTER_FIELD
,
462 TI_VA_LIST_FPR_COUNTER_FIELD
,
465 TI_POINTER_SIZED_TYPE
,
467 TI_POINTER_BOUNDS_TYPE
,
472 TI_DFLOAT32_PTR_TYPE
,
473 TI_DFLOAT64_PTR_TYPE
,
474 TI_DFLOAT128_PTR_TYPE
,
487 TI_SAT_ULLFRACT_TYPE
,
503 TI_SAT_ULLACCUM_TYPE
,
549 TI_OPTIMIZATION_DEFAULT
,
550 TI_OPTIMIZATION_CURRENT
,
551 TI_TARGET_OPTION_DEFAULT
,
552 TI_TARGET_OPTION_CURRENT
,
553 TI_CURRENT_TARGET_PRAGMA
,
554 TI_CURRENT_OPTIMIZE_PRAGMA
,
559 /* An enumeration of the standard C integer types. These must be
560 ordered so that shorter types appear before longer ones, and so
561 that signed types appear before unsigned ones, for the correct
562 functioning of interpret_integer() in c-lex.c. */
563 enum integer_type_kind
{
574 itk_unsigned_long_long
,
588 /* A pointer-to-function member type looks like:
595 If __pfn is NULL, it is a NULL pointer-to-member-function.
597 (Because the vtable is always the first thing in the object, we
598 don't need its offset.) If the function is virtual, then PFN is
599 one plus twice the index into the vtable; otherwise, it is just a
600 pointer to the function.
602 Unfortunately, using the lowest bit of PFN doesn't work in
603 architectures that don't impose alignment requirements on function
604 addresses, or that use the lowest bit to tell one ISA from another,
605 for example. For such architectures, we use the lowest bit of
606 DELTA instead of the lowest bit of the PFN, and DELTA will be
608 enum ptrmemfunc_vbit_where_t
{
609 ptrmemfunc_vbit_in_pfn
,
610 ptrmemfunc_vbit_in_delta
613 /* Flags that may be passed in the third argument of decl_attributes, and
614 to handler functions for attributes. */
615 enum attribute_flags
{
616 /* The type passed in is the type of a DECL, and any attributes that
617 should be passed in again to be applied to the DECL rather than the
618 type should be returned. */
619 ATTR_FLAG_DECL_NEXT
= 1,
620 /* The type passed in is a function return type, and any attributes that
621 should be passed in again to be applied to the function type rather
622 than the return type should be returned. */
623 ATTR_FLAG_FUNCTION_NEXT
= 2,
624 /* The type passed in is an array element type, and any attributes that
625 should be passed in again to be applied to the array type rather
626 than the element type should be returned. */
627 ATTR_FLAG_ARRAY_NEXT
= 4,
628 /* The type passed in is a structure, union or enumeration type being
629 created, and should be modified in place. */
630 ATTR_FLAG_TYPE_IN_PLACE
= 8,
631 /* The attributes are being applied by default to a library function whose
632 name indicates known behavior, and should be silently ignored if they
633 are not in fact compatible with the function type. */
634 ATTR_FLAG_BUILT_IN
= 16,
635 /* A given attribute has been parsed as a C++-11 attribute. */
639 /* Types used to represent sizes. */
640 enum size_type_kind
{
641 stk_sizetype
, /* Normal representation of sizes in bytes. */
642 stk_ssizetype
, /* Signed representation of sizes in bytes. */
643 stk_bitsizetype
, /* Normal representation of sizes in bits. */
644 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
648 enum operand_equal_flag
{
651 OEP_CONSTANT_ADDRESS_OF
= 4
654 /* Enum and arrays used for tree allocation stats.
655 Keep in sync with tree.c:tree_node_kind_names. */
656 enum tree_node_kind
{
676 enum annot_expr_kind
{
677 annot_expr_ivdep_kind
,
678 annot_expr_no_vector_kind
,
679 annot_expr_vector_kind
,
683 /* Internal functions. */
685 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
686 #include "internal-fn.def"
687 #undef DEF_INTERNAL_FN
691 /*---------------------------------------------------------------------------
693 ---------------------------------------------------------------------------*/
694 /* When processing aliases at the symbol table level, we need the
695 declaration of target. For this reason we need to queue aliases and
696 process them after all declarations has been produced. */
697 struct GTY(()) alias_pair
{
702 /* An initialization priority. */
703 typedef unsigned short priority_type
;
705 /* The type of a callback function for walking over tree structure. */
706 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
708 /* The type of a callback function that represents a custom walk_tree. */
709 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
710 void *, hash_set
<tree
> *);
713 /*---------------------------------------------------------------------------
715 ---------------------------------------------------------------------------*/
716 /* A tree node can represent a data type, a variable, an expression
717 or a statement. Each node has a TREE_CODE which says what kind of
718 thing it represents. Some common codes are:
719 INTEGER_TYPE -- represents a type of integers.
720 ARRAY_TYPE -- represents a type of pointer.
721 VAR_DECL -- represents a declared variable.
722 INTEGER_CST -- represents a constant integer value.
723 PLUS_EXPR -- represents a sum (an expression).
725 As for the contents of a tree node: there are some fields
726 that all nodes share. Each TREE_CODE has various special-purpose
727 fields as well. The fields of a node are never accessed directly,
728 always through accessor macros. */
730 /* Every kind of tree node starts with this structure,
731 so all nodes have these fields.
733 See the accessor macros, defined below, for documentation of the
734 fields, and the table below which connects the fields and the
737 struct GTY(()) tree_base
{
738 ENUM_BITFIELD(tree_code
) code
: 16;
740 unsigned side_effects_flag
: 1;
741 unsigned constant_flag
: 1;
742 unsigned addressable_flag
: 1;
743 unsigned volatile_flag
: 1;
744 unsigned readonly_flag
: 1;
745 unsigned asm_written_flag
: 1;
746 unsigned nowarning_flag
: 1;
747 unsigned visited
: 1;
749 unsigned used_flag
: 1;
750 unsigned nothrow_flag
: 1;
751 unsigned static_flag
: 1;
752 unsigned public_flag
: 1;
753 unsigned private_flag
: 1;
754 unsigned protected_flag
: 1;
755 unsigned deprecated_flag
: 1;
756 unsigned default_def_flag
: 1;
759 /* The bits in the following structure should only be used with
760 accessor macros that constrain inputs with tree checking. */
762 unsigned lang_flag_0
: 1;
763 unsigned lang_flag_1
: 1;
764 unsigned lang_flag_2
: 1;
765 unsigned lang_flag_3
: 1;
766 unsigned lang_flag_4
: 1;
767 unsigned lang_flag_5
: 1;
768 unsigned lang_flag_6
: 1;
769 unsigned saturating_flag
: 1;
771 unsigned unsigned_flag
: 1;
772 unsigned packed_flag
: 1;
773 unsigned user_align
: 1;
774 unsigned nameless_flag
: 1;
775 unsigned atomic_flag
: 1;
780 /* This field is only used with TREE_TYPE nodes; the only reason it is
781 present in tree_base instead of tree_type is to save space. The size
782 of the field must be large enough to hold addr_space_t values. */
783 unsigned address_space
: 8;
786 /* The following fields are present in tree_base to save space. The
787 nodes using them do not require any of the flags above and so can
788 make better use of the 4-byte sized word. */
790 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
792 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
793 its native precision. */
794 unsigned char unextended
;
796 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
797 wider precisions based on its TYPE_SIGN. */
798 unsigned char extended
;
800 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
801 offset_int precision, with smaller integers being extended
802 according to their TYPE_SIGN. This is equal to one of the two
803 fields above but is cached for speed. */
804 unsigned char offset
;
807 /* VEC length. This field is only used with TREE_VEC. */
810 /* SSA version number. This field is only used with SSA_NAME. */
811 unsigned int version
;
813 /* Internal function code. */
814 enum internal_fn ifn
;
818 /* The following table lists the uses of each of the above flags and
819 for which types of nodes they are defined.
824 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
827 CONSTRUCTOR, IDENTIFIER_NODE
830 CALL_EXPR_TAILCALL in
836 PREDICT_EXPR_OUTCOME in
842 VAR_DECL, FUNCTION_DECL
845 TREE_NO_TRAMPOLINE in
851 TREE_SYMBOL_REFERENCED in
855 TARGET_EXPR, WITH_CLEANUP_EXPR
857 TRY_CATCH_IS_CLEANUP in
863 TYPE_REF_CAN_ALIAS_ALL in
864 POINTER_TYPE, REFERENCE_TYPE
872 TRANSACTION_EXPR_OUTER in
875 SSA_NAME_ANTI_RANGE_P in
881 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
884 VAR_DECL, FUNCTION_DECL
887 CONSTRUCTOR_NO_CLEARING in
893 CALL_EXPR_VA_ARG_PACK in
896 TYPE_CACHED_VALUES_P in
899 SAVE_EXPR_RESOLVED_P in
902 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
903 OMP_CLAUSE_LASTPRIVATE
905 OMP_CLAUSE_PRIVATE_DEBUG in
908 OMP_CLAUSE_LINEAR_NO_COPYIN in
911 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
914 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
917 TRANSACTION_EXPR_RELAXED in
925 CALL_EXPR_RETURN_SLOT_OPT in
931 OMP_PARALLEL_COMBINED in
934 OMP_ATOMIC_SEQ_CST in
937 OMP_CLAUSE_PRIVATE_OUTER_REF in
940 OMP_CLAUSE_LINEAR_NO_COPYOUT in
943 TYPE_REF_IS_RVALUE in
955 CALL_FROM_THUNK_P and
956 CALL_ALLOCA_FOR_VAR_P in
959 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
974 TREE_THIS_VOLATILE in
997 TYPE_SIZES_GIMPLIFIED in
1011 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1012 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1015 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1035 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1037 SSA_NAME_IN_FREELIST in
1049 IDENTIFIER_TRANSPARENT_ALIAS in
1055 all trees (used liberally by many passes)
1062 VAR_DECL_IS_VIRTUAL_OPERAND in
1076 TYPE_VECTOR_OPAQUE in
1079 SSA_NAME_IS_DEFAULT_DEF in
1082 DECL_NONLOCAL_FRAME in
1086 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1089 struct GTY(()) tree_typed
{
1090 struct tree_base base
;
1094 struct GTY(()) tree_common
{
1095 struct tree_typed typed
;
1099 struct GTY(()) tree_int_cst
{
1100 struct tree_typed typed
;
1101 HOST_WIDE_INT val
[1];
1105 struct GTY(()) tree_real_cst
{
1106 struct tree_typed typed
;
1107 struct real_value
* real_cst_ptr
;
1110 struct GTY(()) tree_fixed_cst
{
1111 struct tree_typed typed
;
1112 struct fixed_value
* fixed_cst_ptr
;
1115 struct GTY(()) tree_string
{
1116 struct tree_typed typed
;
1121 struct GTY(()) tree_complex
{
1122 struct tree_typed typed
;
1127 struct GTY(()) tree_vector
{
1128 struct tree_typed typed
;
1129 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1132 struct GTY(()) tree_identifier
{
1133 struct tree_common common
;
1134 struct ht_identifier id
;
1137 struct GTY(()) tree_list
{
1138 struct tree_common common
;
1143 struct GTY(()) tree_vec
{
1144 struct tree_common common
;
1145 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1148 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1149 element. INDEX can optionally design the position of VALUE: in arrays,
1150 it is the index where VALUE has to be placed; in structures, it is the
1151 FIELD_DECL of the member. */
1152 struct GTY(()) constructor_elt
{
1157 struct GTY(()) tree_constructor
{
1158 struct tree_typed typed
;
1159 vec
<constructor_elt
, va_gc
> *elts
;
1162 enum omp_clause_depend_kind
1164 OMP_CLAUSE_DEPEND_IN
,
1165 OMP_CLAUSE_DEPEND_OUT
,
1166 OMP_CLAUSE_DEPEND_INOUT
,
1167 OMP_CLAUSE_DEPEND_LAST
1170 enum omp_clause_map_kind
1172 OMP_CLAUSE_MAP_ALLOC
,
1174 OMP_CLAUSE_MAP_FROM
,
1175 OMP_CLAUSE_MAP_TOFROM
,
1176 /* The following kind is an internal only map kind, used for pointer based
1177 array sections. OMP_CLAUSE_SIZE for these is not the pointer size,
1178 which is implicitly POINTER_SIZE_UNITS, but the bias. */
1179 OMP_CLAUSE_MAP_POINTER
,
1180 /* Also internal, behaves like OMP_CLAUS_MAP_TO, but additionally any
1181 OMP_CLAUSE_MAP_POINTER records consecutive after it which have addresses
1182 falling into that range will not be ignored if OMP_CLAUSE_MAP_TO_PSET
1183 wasn't mapped already. */
1184 OMP_CLAUSE_MAP_TO_PSET
,
1188 enum omp_clause_proc_bind_kind
1190 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1191 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1192 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1193 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1194 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1195 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1196 OMP_CLAUSE_PROC_BIND_LAST
1199 struct GTY(()) tree_exp
{
1200 struct tree_typed typed
;
1202 tree
GTY ((special ("tree_exp"),
1203 desc ("TREE_CODE ((tree) &%0)")))
1207 /* Immediate use linking structure. This structure is used for maintaining
1208 a doubly linked list of uses of an SSA_NAME. */
1209 struct GTY(()) ssa_use_operand_t
{
1210 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1211 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1212 /* Immediate uses for a given SSA name are maintained as a cyclic
1213 list. To recognize the root of this list, the location field
1214 needs to point to the original SSA name. Since statements and
1215 SSA names are of different data types, we need this union. See
1216 the explanation in struct imm_use_iterator. */
1217 union { gimple stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1218 tree
*GTY((skip(""))) use
;
1221 struct GTY(()) tree_ssa_name
{
1222 struct tree_typed typed
;
1224 /* _DECL wrapped by this SSA name. */
1227 /* Statement that defines this SSA name. */
1230 /* Value range information. */
1231 union ssa_name_info_type
{
1232 /* Pointer attributes used for alias analysis. */
1233 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1234 /* Value range attributes used for zero/sign extension elimination. */
1235 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1236 } GTY ((desc ("%1.typed.type ?" \
1237 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1239 /* Immediate uses list for this SSA_NAME. */
1240 struct ssa_use_operand_t imm_uses
;
1243 struct GTY(()) phi_arg_d
{
1244 /* imm_use MUST be the first element in struct because we do some
1245 pointer arithmetic with it. See phi_arg_index_from_use. */
1246 struct ssa_use_operand_t imm_use
;
1251 struct GTY(()) tree_omp_clause
{
1252 struct tree_common common
;
1254 enum omp_clause_code code
;
1255 union omp_clause_subcode
{
1256 enum omp_clause_default_kind default_kind
;
1257 enum omp_clause_schedule_kind schedule_kind
;
1258 enum omp_clause_depend_kind depend_kind
;
1259 enum omp_clause_map_kind map_kind
;
1260 enum omp_clause_proc_bind_kind proc_bind_kind
;
1261 enum tree_code reduction_code
;
1262 } GTY ((skip
)) subcode
;
1264 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1266 gimple_seq gimple_reduction_init
;
1267 gimple_seq gimple_reduction_merge
;
1269 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1273 struct GTY(()) tree_block
{
1274 struct tree_base base
;
1277 unsigned abstract_flag
: 1;
1278 unsigned block_num
: 31;
1281 location_t end_locus
;
1284 vec
<tree
, va_gc
> *nonlocalized_vars
;
1288 tree abstract_origin
;
1289 tree fragment_origin
;
1290 tree fragment_chain
;
1293 struct GTY(()) tree_type_common
{
1294 struct tree_common common
;
1300 unsigned int precision
: 10;
1301 unsigned no_force_blk_flag
: 1;
1302 unsigned needs_constructing_flag
: 1;
1303 unsigned transparent_aggr_flag
: 1;
1304 unsigned restrict_flag
: 1;
1305 unsigned contains_placeholder_bits
: 2;
1307 ENUM_BITFIELD(machine_mode
) mode
: 8;
1309 unsigned string_flag
: 1;
1310 unsigned lang_flag_0
: 1;
1311 unsigned lang_flag_1
: 1;
1312 unsigned lang_flag_2
: 1;
1313 unsigned lang_flag_3
: 1;
1314 unsigned lang_flag_4
: 1;
1315 unsigned lang_flag_5
: 1;
1316 unsigned lang_flag_6
: 1;
1319 alias_set_type alias_set
;
1322 union tree_type_symtab
{
1323 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1324 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1325 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1326 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1334 struct GTY(()) tree_type_with_lang_specific
{
1335 struct tree_type_common common
;
1336 /* Points to a structure whose details depend on the language in use. */
1337 struct lang_type
*lang_specific
;
1340 struct GTY(()) tree_type_non_common
{
1341 struct tree_type_with_lang_specific with_lang_specific
;
1348 struct GTY (()) tree_binfo
{
1349 struct tree_common common
;
1355 vec
<tree
, va_gc
> *base_accesses
;
1361 vec
<tree
, va_gc
> base_binfos
;
1364 struct GTY(()) tree_decl_minimal
{
1365 struct tree_common common
;
1372 struct GTY(()) tree_decl_common
{
1373 struct tree_decl_minimal common
;
1376 ENUM_BITFIELD(machine_mode
) mode
: 8;
1378 unsigned nonlocal_flag
: 1;
1379 unsigned virtual_flag
: 1;
1380 unsigned ignored_flag
: 1;
1381 unsigned abstract_flag
: 1;
1382 unsigned artificial_flag
: 1;
1383 unsigned preserve_flag
: 1;
1384 unsigned debug_expr_is_from
: 1;
1386 unsigned lang_flag_0
: 1;
1387 unsigned lang_flag_1
: 1;
1388 unsigned lang_flag_2
: 1;
1389 unsigned lang_flag_3
: 1;
1390 unsigned lang_flag_4
: 1;
1391 unsigned lang_flag_5
: 1;
1392 unsigned lang_flag_6
: 1;
1393 unsigned lang_flag_7
: 1;
1394 unsigned lang_flag_8
: 1;
1396 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1397 unsigned decl_flag_0
: 1;
1398 /* In FIELD_DECL, this is DECL_BIT_FIELD
1399 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1400 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1401 unsigned decl_flag_1
: 1;
1402 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1403 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1404 DECL_HAS_VALUE_EXPR_P. */
1405 unsigned decl_flag_2
: 1;
1407 unsigned decl_flag_3
: 1;
1408 /* Logically, these two would go in a theoretical base shared by var and
1410 unsigned gimple_reg_flag
: 1;
1411 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1412 unsigned decl_by_reference_flag
: 1;
1413 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1414 unsigned decl_read_flag
: 1;
1415 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1416 unsigned decl_nonshareable_flag
: 1;
1418 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1419 unsigned int off_align
: 8;
1421 /* 24 bits unused. */
1423 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1426 /* UID for points-to sets, stable over copying from inlining. */
1427 unsigned int pt_uid
;
1432 tree abstract_origin
;
1434 /* Points to a structure whose details depend on the language in use. */
1435 struct lang_decl
*lang_specific
;
1438 struct GTY(()) tree_decl_with_rtl
{
1439 struct tree_decl_common common
;
1443 struct GTY(()) tree_field_decl
{
1444 struct tree_decl_common common
;
1447 tree bit_field_type
;
1453 struct GTY(()) tree_label_decl
{
1454 struct tree_decl_with_rtl common
;
1456 int eh_landing_pad_nr
;
1459 struct GTY(()) tree_result_decl
{
1460 struct tree_decl_with_rtl common
;
1463 struct GTY(()) tree_const_decl
{
1464 struct tree_decl_common common
;
1467 struct GTY(()) tree_parm_decl
{
1468 struct tree_decl_with_rtl common
;
1472 struct GTY(()) tree_decl_with_vis
{
1473 struct tree_decl_with_rtl common
;
1474 tree assembler_name
;
1475 struct symtab_node
*symtab_node
;
1477 /* Belong to VAR_DECL exclusively. */
1478 unsigned defer_output
: 1;
1479 unsigned hard_register
: 1;
1480 unsigned common_flag
: 1;
1481 unsigned in_text_section
: 1;
1482 unsigned in_constant_pool
: 1;
1483 unsigned dllimport_flag
: 1;
1484 /* Don't belong to VAR_DECL exclusively. */
1485 unsigned weak_flag
: 1;
1487 unsigned seen_in_bind_expr
: 1;
1488 unsigned comdat_flag
: 1;
1489 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1490 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1491 unsigned visibility_specified
: 1;
1493 /* Belong to FUNCTION_DECL exclusively. */
1494 unsigned init_priority_p
: 1;
1495 /* Used by C++ only. Might become a generic decl flag. */
1496 unsigned shadowed_for_var_p
: 1;
1497 /* Belong to FUNCTION_DECL exclusively. */
1498 unsigned cxx_constructor
: 1;
1499 /* Belong to FUNCTION_DECL exclusively. */
1500 unsigned cxx_destructor
: 1;
1501 /* Belong to FUNCTION_DECL exclusively. */
1503 /* Belong to FUNCTION_DECL exclusively. */
1504 unsigned regdecl_flag
: 1;
1505 /* 14 unused bits. */
1508 struct GTY(()) tree_var_decl
{
1509 struct tree_decl_with_vis common
;
1512 struct GTY(()) tree_decl_non_common
{
1513 struct tree_decl_with_vis common
;
1514 /* Almost all FE's use this. */
1518 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1519 arguments/result/saved_tree fields by front ends. It was either inherit
1520 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1521 which seemed a bit strange. */
1523 struct GTY(()) tree_function_decl
{
1524 struct tree_decl_non_common common
;
1528 /* Arguments of the function. */
1530 /* The personality function. Used for stack unwinding. */
1533 /* Function specific options that are used by this function. */
1534 tree function_specific_target
; /* target options */
1535 tree function_specific_optimization
; /* optimization options */
1537 /* Generic function body. */
1539 /* Index within a virtual table. */
1542 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1543 DECL_FUNCTION_CODE. Otherwise unused.
1544 ??? The bitfield needs to be able to hold all target function
1546 ENUM_BITFIELD(built_in_function
) function_code
: 12;
1547 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1549 unsigned static_ctor_flag
: 1;
1550 unsigned static_dtor_flag
: 1;
1552 unsigned uninlinable
: 1;
1553 unsigned possibly_inlined
: 1;
1554 unsigned novops_flag
: 1;
1555 unsigned returns_twice_flag
: 1;
1556 unsigned malloc_flag
: 1;
1557 unsigned operator_new_flag
: 1;
1558 unsigned declared_inline_flag
: 1;
1559 unsigned no_inline_warning_flag
: 1;
1561 unsigned no_instrument_function_entry_exit
: 1;
1562 unsigned no_limit_stack
: 1;
1563 unsigned disregard_inline_limits
: 1;
1564 unsigned pure_flag
: 1;
1565 unsigned looping_const_or_pure_flag
: 1;
1566 unsigned has_debug_args_flag
: 1;
1567 unsigned tm_clone_flag
: 1;
1568 unsigned versioned_function
: 1;
1572 struct GTY(()) tree_translation_unit_decl
{
1573 struct tree_decl_common common
;
1574 /* Source language of this translation unit. Used for DWARF output. */
1575 const char * GTY((skip(""))) language
;
1576 /* TODO: Non-optimization used to build this translation unit. */
1577 /* TODO: Root of a partial DWARF tree for global types and decls. */
1580 struct GTY(()) tree_type_decl
{
1581 struct tree_decl_non_common common
;
1585 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1587 struct tree_statement_list_node
*prev
;
1588 struct tree_statement_list_node
*next
;
1592 struct GTY(()) tree_statement_list
1594 struct tree_typed typed
;
1595 struct tree_statement_list_node
*head
;
1596 struct tree_statement_list_node
*tail
;
1600 /* Optimization options used by a function. */
1602 struct GTY(()) tree_optimization_option
{
1603 struct tree_common common
;
1605 /* The optimization options used by the user. */
1606 struct cl_optimization opts
;
1608 /* Target optabs for this set of optimization options. This is of
1609 type `struct target_optabs *'. */
1610 void *GTY ((atomic
)) optabs
;
1612 /* The value of this_target_optabs against which the optabs above were
1614 struct target_optabs
*GTY ((skip
)) base_optabs
;
1617 /* Forward declaration, defined in target-globals.h. */
1619 struct GTY(()) target_globals
;
1621 /* Target options used by a function. */
1623 struct GTY(()) tree_target_option
{
1624 struct tree_common common
;
1626 /* Target globals for the corresponding target option. */
1627 struct target_globals
*globals
;
1629 /* The optimization options used by the user. */
1630 struct cl_target_option opts
;
1633 /* Define the overall contents of a tree node.
1634 It may be any of the structures declared above
1635 for various types of node. */
1636 union GTY ((ptr_alias (union lang_tree_node
),
1637 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1638 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1639 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1640 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1641 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1642 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1643 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1644 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1645 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1646 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1647 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1648 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1649 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1650 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1651 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1653 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1654 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1655 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1656 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1657 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1658 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1659 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1660 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1661 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1662 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1663 translation_unit_decl
;
1664 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1665 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1666 type_with_lang_specific
;
1667 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1669 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1670 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1671 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1672 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1673 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1674 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1675 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1676 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1677 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1678 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1679 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1682 /* Structure describing an attribute and a function to handle it. */
1683 struct attribute_spec
{
1684 /* The name of the attribute (without any leading or trailing __),
1685 or NULL to mark the end of a table of attributes. */
1687 /* The minimum length of the list of arguments of the attribute. */
1689 /* The maximum length of the list of arguments of the attribute
1690 (-1 for no maximum). */
1692 /* Whether this attribute requires a DECL. If it does, it will be passed
1693 from types of DECLs, function return types and array element types to
1694 the DECLs, function types and array types respectively; but when
1695 applied to a type in any other circumstances, it will be ignored with
1696 a warning. (If greater control is desired for a given attribute,
1697 this should be false, and the flags argument to the handler may be
1698 used to gain greater control in that case.) */
1700 /* Whether this attribute requires a type. If it does, it will be passed
1701 from a DECL to the type of that DECL. */
1703 /* Whether this attribute requires a function (or method) type. If it does,
1704 it will be passed from a function pointer type to the target type,
1705 and from a function return type (which is not itself a function
1706 pointer type) to the function type. */
1707 bool function_type_required
;
1708 /* Function to handle this attribute. NODE points to the node to which
1709 the attribute is to be applied. If a DECL, it should be modified in
1710 place; if a TYPE, a copy should be created. NAME is the name of the
1711 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1712 of the arguments (which may be NULL). FLAGS gives further information
1713 about the context of the attribute. Afterwards, the attributes will
1714 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1715 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1716 as well as in any other cases when the attributes should not be added
1717 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1718 applied to another type or DECL later may be returned;
1719 otherwise the return value should be NULL_TREE. This pointer may be
1720 NULL if no special handling is required beyond the checks implied
1721 by the rest of this structure. */
1722 tree (*handler
) (tree
*node
, tree name
, tree args
,
1723 int flags
, bool *no_add_attrs
);
1724 /* Specifies if attribute affects type's identity. */
1725 bool affects_type_identity
;
1728 /* These functions allow a front-end to perform a manual layout of a
1729 RECORD_TYPE. (For instance, if the placement of subsequent fields
1730 depends on the placement of fields so far.) Begin by calling
1731 start_record_layout. Then, call place_field for each of the
1732 fields. Then, call finish_record_layout. See layout_type for the
1733 default way in which these functions are used. */
1734 typedef struct record_layout_info_s
{
1735 /* The RECORD_TYPE that we are laying out. */
1737 /* The offset into the record so far, in bytes, not including bits in
1740 /* The last known alignment of SIZE. */
1741 unsigned int offset_align
;
1742 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1744 /* The alignment of the record so far, in bits. */
1745 unsigned int record_align
;
1746 /* The alignment of the record so far, ignoring #pragma pack and
1747 __attribute__ ((packed)), in bits. */
1748 unsigned int unpacked_align
;
1749 /* The previous field laid out. */
1751 /* The static variables (i.e., class variables, as opposed to
1752 instance variables) encountered in T. */
1753 vec
<tree
, va_gc
> *pending_statics
;
1754 /* Bits remaining in the current alignment group */
1755 int remaining_in_alignment
;
1756 /* True if we've seen a packed field that didn't have normal
1757 alignment anyway. */
1758 int packed_maybe_necessary
;
1759 } *record_layout_info
;
1761 /* Iterator for going through the function arguments. */
1762 struct function_args_iterator
{
1763 tree next
; /* TREE_LIST pointing to the next argument */
1766 /* Structures to map from a tree to another tree. */
1767 struct GTY(()) tree_map_base
{
1771 /* Map from a tree to another tree. */
1773 struct GTY(()) tree_map
{
1774 struct tree_map_base base
;
1779 /* Map from a decl tree to another tree. */
1780 struct GTY(()) tree_decl_map
{
1781 struct tree_map_base base
;
1785 /* Map from a tree to an int. */
1786 struct GTY(()) tree_int_map
{
1787 struct tree_map_base base
;
1791 /* Map from a decl tree to a tree vector. */
1792 struct GTY(()) tree_vec_map
{
1793 struct tree_map_base base
;
1794 vec
<tree
, va_gc
> *to
;
1797 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1798 have to go towards the end of tree.h so that union tree_node is fully
1799 defined by this point. */
1801 /* Structure containing iterator state. */
1802 struct call_expr_arg_iterator
{
1803 tree t
; /* the call_expr */
1804 int n
; /* argument count */
1805 int i
; /* next argument index */
1808 struct const_call_expr_arg_iterator
{
1809 const_tree t
; /* the call_expr */
1810 int n
; /* argument count */
1811 int i
; /* next argument index */
1814 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1815 function, and a flag that says if the function is available implicitly, or
1816 whether the user has to code explicit calls to __builtin_<xxx>. */
1817 struct GTY(()) builtin_info_type
{
1818 tree decl
[(int)END_BUILTINS
];
1819 bool implicit_p
[(int)END_BUILTINS
];
1823 /*---------------------------------------------------------------------------
1825 ---------------------------------------------------------------------------*/
1826 /* Matrix describing the structures contained in a given tree code. */
1827 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1829 /* Class of tree given its code. */
1830 extern const enum tree_code_class tree_code_type
[];
1832 /* Each tree code class has an associated string representation.
1833 These must correspond to the tree_code_class entries. */
1834 extern const char *const tree_code_class_strings
[];
1836 /* Number of argument-words in each kind of tree-node. */
1837 extern const unsigned char tree_code_length
[];
1839 /* Vector of all alias pairs for global symbols. */
1840 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1842 /* Names of all the built_in classes. */
1843 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1845 /* Names of all the built_in functions. */
1846 extern const char * built_in_names
[(int) END_BUILTINS
];
1848 /* Number of operands and names for each OMP_CLAUSE node. */
1849 extern unsigned const char omp_clause_num_ops
[];
1850 extern const char * const omp_clause_code_name
[];
1852 /* A vector of all translation-units. */
1853 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
1855 /* Vector of standard trees used by the C compiler. */
1856 extern GTY(()) tree global_trees
[TI_MAX
];
1858 /* The standard C integer types. Use integer_type_kind to index into
1860 extern GTY(()) tree integer_types
[itk_none
];
1862 /* Types used to represent sizes. */
1863 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
1865 /* Arrays for keeping track of tree node statistics. */
1866 extern int tree_node_counts
[];
1867 extern int tree_node_sizes
[];
1869 /* True if we are in gimple form and the actions of the folders need to
1870 be restricted. False if we are not in gimple form and folding is not
1871 restricted to creating gimple expressions. */
1872 extern bool in_gimple_form
;
1874 /* Functional interface to the builtin functions. */
1875 extern GTY(()) builtin_info_type builtin_info
;
1877 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
1878 extern unsigned int maximum_field_alignment
;
1880 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
1881 extern GTY(()) tree current_function_decl
;
1883 /* Nonzero means a FUNC_BEGIN label was emitted. */
1884 extern GTY(()) const char * current_function_func_begin_label
;
1886 #endif // GCC_TREE_CORE_H