1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2016 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
25 /* This file contains all the data structures that define the 'tree' type.
26 There are no accessor macros nor functions in this file. Only the
27 basic data structures, extern declarations and type definitions. */
29 /*---------------------------------------------------------------------------
30 Forward type declarations. Mostly to avoid including unnecessary headers
31 ---------------------------------------------------------------------------*/
36 struct range_info_def
;
40 /*---------------------------------------------------------------------------
42 ---------------------------------------------------------------------------*/
43 /* Nonzero if this is a call to a function whose return value depends
44 solely on its arguments, has no side effects, and does not read
45 global memory. This corresponds to TREE_READONLY for function
47 #define ECF_CONST (1 << 0)
49 /* Nonzero if this is a call to "pure" function (like const function,
50 but may read memory. This corresponds to DECL_PURE_P for function
52 #define ECF_PURE (1 << 1)
54 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no
55 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P
57 #define ECF_LOOPING_CONST_OR_PURE (1 << 2)
59 /* Nonzero if this call will never return. */
60 #define ECF_NORETURN (1 << 3)
62 /* Nonzero if this is a call to malloc or a related function. */
63 #define ECF_MALLOC (1 << 4)
65 /* Nonzero if it is plausible that this is a call to alloca. */
66 #define ECF_MAY_BE_ALLOCA (1 << 5)
68 /* Nonzero if this is a call to a function that won't throw an exception. */
69 #define ECF_NOTHROW (1 << 6)
71 /* Nonzero if this is a call to setjmp or a related function. */
72 #define ECF_RETURNS_TWICE (1 << 7)
74 /* Nonzero if this call replaces the current stack frame. */
75 #define ECF_SIBCALL (1 << 8)
77 /* Function does not read or write memory (but may have side effects, so
78 it does not necessarily fit ECF_CONST). */
79 #define ECF_NOVOPS (1 << 9)
81 /* The function does not lead to calls within current function unit. */
82 #define ECF_LEAF (1 << 10)
84 /* Nonzero if this call returns its first argument. */
85 #define ECF_RET1 (1 << 11)
87 /* Nonzero if this call does not affect transactions. */
88 #define ECF_TM_PURE (1 << 12)
90 /* Nonzero if this call is into the transaction runtime library. */
91 #define ECF_TM_BUILTIN (1 << 13)
93 /* Call argument flags. */
94 /* Nonzero if the argument is not dereferenced recursively, thus only
95 directly reachable memory is read or written. */
96 #define EAF_DIRECT (1 << 0)
98 /* Nonzero if memory reached by the argument is not clobbered. */
99 #define EAF_NOCLOBBER (1 << 1)
101 /* Nonzero if the argument does not escape. */
102 #define EAF_NOESCAPE (1 << 2)
104 /* Nonzero if the argument is not used by the function. */
105 #define EAF_UNUSED (1 << 3)
107 /* Call return flags. */
108 /* Mask for the argument number that is returned. Lower two bits of
109 the return flags, encodes argument slots zero to three. */
110 #define ERF_RETURN_ARG_MASK (3)
112 /* Nonzero if the return value is equal to the argument number
113 flags & ERF_RETURN_ARG_MASK. */
114 #define ERF_RETURNS_ARG (1 << 2)
116 /* Nonzero if the return value does not alias with anything. Functions
117 with the malloc attribute have this set on their return value. */
118 #define ERF_NOALIAS (1 << 3)
121 /*---------------------------------------------------------------------------
123 ---------------------------------------------------------------------------*/
124 /* Codes of tree nodes. */
125 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
126 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
129 #include "all-tree.def"
134 #undef END_OF_BASE_TREE_CODES
136 /* Number of language-independent tree codes. */
137 #define NUM_TREE_CODES \
138 ((int) LAST_AND_UNUSED_TREE_CODE)
140 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
141 (tree_contains_struct[(CODE)][(STRUCT)])
144 /* Classify which part of the compiler has defined a given builtin function.
145 Note that we assume below that this is no more than two bits. */
146 enum built_in_class
{
153 /* Last marker used for LTO stremaing of built_in_class. We can not add it
154 to the enum since we need the enumb to fit in 2 bits. */
155 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
157 /* Codes that identify the various built in functions
158 so that expand_call can identify them quickly. */
159 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
160 enum built_in_function
{
161 #include "builtins.def"
165 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
166 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
167 ENUM##_CHKP = ENUM + BEGIN_CHKP_BUILTINS + 1,
168 #include "builtins.def"
170 END_CHKP_BUILTINS
= BEGIN_CHKP_BUILTINS
* 2 + 1,
172 /* Complex division routines in libgcc. These are done via builtins
173 because emit_library_call_value can't handle complex values. */
174 BUILT_IN_COMPLEX_MUL_MIN
,
175 BUILT_IN_COMPLEX_MUL_MAX
176 = BUILT_IN_COMPLEX_MUL_MIN
177 + MAX_MODE_COMPLEX_FLOAT
178 - MIN_MODE_COMPLEX_FLOAT
,
180 BUILT_IN_COMPLEX_DIV_MIN
,
181 BUILT_IN_COMPLEX_DIV_MAX
182 = BUILT_IN_COMPLEX_DIV_MIN
183 + MAX_MODE_COMPLEX_FLOAT
184 - MIN_MODE_COMPLEX_FLOAT
,
186 /* Upper bound on non-language-specific builtins. */
190 /* Internal functions. */
192 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
193 #include "internal-fn.def"
197 /* An enum that combines target-independent built-in functions with
198 internal functions, so that they can be treated in a similar way.
199 The numbers for built-in functions are the same as for the
200 built_in_function enum. The numbers for internal functions
201 start at END_BUITLINS. */
203 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
204 CFN_##ENUM = int (ENUM),
205 #include "builtins.def"
207 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
208 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
209 CFN_##ENUM##_CHKP = int (ENUM##_CHKP),
210 #include "builtins.def"
212 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
213 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
214 #include "internal-fn.def"
219 /* Tree code classes. Each tree_code has an associated code class
220 represented by a TREE_CODE_CLASS. */
221 enum tree_code_class
{
222 tcc_exceptional
, /* An exceptional code (fits no category). */
223 tcc_constant
, /* A constant. */
224 /* Order of tcc_type and tcc_declaration is important. */
225 tcc_type
, /* A type object code. */
226 tcc_declaration
, /* A declaration (also serving as variable refs). */
227 tcc_reference
, /* A reference to storage. */
228 tcc_comparison
, /* A comparison expression. */
229 tcc_unary
, /* A unary arithmetic expression. */
230 tcc_binary
, /* A binary arithmetic expression. */
231 tcc_statement
, /* A statement expression, which have side effects
232 but usually no interesting value. */
233 tcc_vl_exp
, /* A function call or other expression with a
234 variable-length operand vector. */
235 tcc_expression
/* Any other expression. */
238 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
239 the tables omp_clause_num_ops and omp_clause_code_name. */
240 enum omp_clause_code
{
241 /* Clause zero is special-cased inside the parser
242 (c_parser_omp_variable_list). */
243 OMP_CLAUSE_ERROR
= 0,
245 /* OpenACC/OpenMP clause: private (variable_list). */
248 /* OpenMP clause: shared (variable_list). */
251 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
252 OMP_CLAUSE_FIRSTPRIVATE
,
254 /* OpenMP clause: lastprivate (variable_list). */
255 OMP_CLAUSE_LASTPRIVATE
,
257 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
258 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
259 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
260 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
262 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
263 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
264 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
265 VAR_DECL placeholder, used like the above for C/C++ array
267 OMP_CLAUSE_REDUCTION
,
269 /* OpenMP clause: copyin (variable_list). */
272 /* OpenMP clause: copyprivate (variable_list). */
273 OMP_CLAUSE_COPYPRIVATE
,
275 /* OpenMP clause: linear (variable-list[:linear-step]). */
278 /* OpenMP clause: aligned (variable-list[:alignment]). */
281 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
284 /* OpenMP clause: uniform (argument-list). */
287 /* OpenMP clause: to (extended-list).
288 Only when it appears in declare target. */
289 OMP_CLAUSE_TO_DECLARE
,
291 /* OpenMP clause: link (variable-list). */
294 /* OpenMP clause: from (variable-list). */
297 /* OpenMP clause: to (variable-list). */
300 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
301 device, host (self), present, present_or_copy (pcopy), present_or_copyin
302 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
305 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
308 /* OpenACC clause: use_device (variable_list).
309 OpenMP clause: use_device_ptr (variable-list). */
310 OMP_CLAUSE_USE_DEVICE_PTR
,
312 /* OpenMP clause: is_device_ptr (variable-list). */
313 OMP_CLAUSE_IS_DEVICE_PTR
,
315 /* Internal structure to hold OpenACC cache directive's variable-list.
316 #pragma acc cache (variable-list). */
319 /* OpenACC clause: device_resident (variable_list). */
320 OMP_CLAUSE_DEVICE_RESIDENT
,
322 /* OpenACC clause: gang [(gang-argument-list)].
324 gang-argument-list: [gang-argument-list, ] gang-argument
325 gang-argument: [num:] integer-expression
326 | static: size-expression
327 size-expression: * | integer-expression. */
330 /* OpenACC clause: async [(integer-expression)]. */
333 /* OpenACC clause: wait [(integer-expression-list)]. */
336 /* OpenACC clause: auto. */
339 /* OpenACC clause: seq. */
342 /* Internal clause: temporary for combined loops expansion. */
343 OMP_CLAUSE__LOOPTEMP_
,
345 /* OpenACC/OpenMP clause: if (scalar-expression). */
348 /* OpenMP clause: num_threads (integer-expression). */
349 OMP_CLAUSE_NUM_THREADS
,
351 /* OpenMP clause: schedule. */
354 /* OpenMP clause: nowait. */
357 /* OpenMP clause: ordered [(constant-integer-expression)]. */
360 /* OpenMP clause: default. */
363 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
366 /* OpenMP clause: untied. */
369 /* OpenMP clause: final (scalar-expression). */
372 /* OpenMP clause: mergeable. */
373 OMP_CLAUSE_MERGEABLE
,
375 /* OpenMP clause: device (integer-expression). */
378 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
379 OMP_CLAUSE_DIST_SCHEDULE
,
381 /* OpenMP clause: inbranch. */
384 /* OpenMP clause: notinbranch. */
385 OMP_CLAUSE_NOTINBRANCH
,
387 /* OpenMP clause: num_teams(integer-expression). */
388 OMP_CLAUSE_NUM_TEAMS
,
390 /* OpenMP clause: thread_limit(integer-expression). */
391 OMP_CLAUSE_THREAD_LIMIT
,
393 /* OpenMP clause: proc_bind ({master,close,spread}). */
394 OMP_CLAUSE_PROC_BIND
,
396 /* OpenMP clause: safelen (constant-integer-expression). */
399 /* OpenMP clause: simdlen (constant-integer-expression). */
402 /* OpenMP clause: for. */
405 /* OpenMP clause: parallel. */
408 /* OpenMP clause: sections. */
411 /* OpenMP clause: taskgroup. */
412 OMP_CLAUSE_TASKGROUP
,
414 /* OpenMP clause: priority (integer-expression). */
417 /* OpenMP clause: grainsize (integer-expression). */
418 OMP_CLAUSE_GRAINSIZE
,
420 /* OpenMP clause: num_tasks (integer-expression). */
421 OMP_CLAUSE_NUM_TASKS
,
423 /* OpenMP clause: nogroup. */
426 /* OpenMP clause: threads. */
429 /* OpenMP clause: simd. */
432 /* OpenMP clause: hint (integer-expression). */
435 /* OpenMP clause: defaultmap (tofrom: scalar). */
436 OMP_CLAUSE_DEFAULTMAP
,
438 /* Internally used only clause, holding SIMD uid. */
439 OMP_CLAUSE__SIMDUID_
,
441 /* Internally used only clause, holding _Cilk_for # of iterations
443 OMP_CLAUSE__CILK_FOR_COUNT_
,
445 /* OpenACC clause: independent. */
446 OMP_CLAUSE_INDEPENDENT
,
448 /* OpenACC clause: worker [( [num:] integer-expression)]. */
451 /* OpenACC clause: vector [( [length:] integer-expression)]. */
454 /* OpenACC clause: num_gangs (integer-expression). */
455 OMP_CLAUSE_NUM_GANGS
,
457 /* OpenACC clause: num_workers (integer-expression). */
458 OMP_CLAUSE_NUM_WORKERS
,
460 /* OpenACC clause: vector_length (integer-expression). */
461 OMP_CLAUSE_VECTOR_LENGTH
,
463 /* OpenACC clause: tile ( size-expr-list ). */
466 /* OpenMP internal-only clause to specify grid dimensions of a gridified
472 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
473 enum tree_node_structure_enum
{
474 #include "treestruct.def"
479 enum omp_clause_schedule_kind
{
480 OMP_CLAUSE_SCHEDULE_STATIC
,
481 OMP_CLAUSE_SCHEDULE_DYNAMIC
,
482 OMP_CLAUSE_SCHEDULE_GUIDED
,
483 OMP_CLAUSE_SCHEDULE_AUTO
,
484 OMP_CLAUSE_SCHEDULE_RUNTIME
,
485 OMP_CLAUSE_SCHEDULE_CILKFOR
,
486 OMP_CLAUSE_SCHEDULE_MASK
= (1 << 3) - 1,
487 OMP_CLAUSE_SCHEDULE_MONOTONIC
= (1 << 3),
488 OMP_CLAUSE_SCHEDULE_NONMONOTONIC
= (1 << 4),
489 OMP_CLAUSE_SCHEDULE_LAST
= 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC
- 1
492 enum omp_clause_default_kind
{
493 OMP_CLAUSE_DEFAULT_UNSPECIFIED
,
494 OMP_CLAUSE_DEFAULT_SHARED
,
495 OMP_CLAUSE_DEFAULT_NONE
,
496 OMP_CLAUSE_DEFAULT_PRIVATE
,
497 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
,
498 OMP_CLAUSE_DEFAULT_LAST
501 /* There is a TYPE_QUAL value for each type qualifier. They can be
502 combined by bitwise-or to form the complete set of qualifiers for a
505 TYPE_UNQUALIFIED
= 0x0,
506 TYPE_QUAL_CONST
= 0x1,
507 TYPE_QUAL_VOLATILE
= 0x2,
508 TYPE_QUAL_RESTRICT
= 0x4,
509 TYPE_QUAL_ATOMIC
= 0x8
512 /* Standard named or nameless data types of the C compiler. */
542 TI_INTEGER_MINUS_ONE
,
559 TI_COMPLEX_INTEGER_TYPE
,
560 TI_COMPLEX_FLOAT_TYPE
,
561 TI_COMPLEX_DOUBLE_TYPE
,
562 TI_COMPLEX_LONG_DOUBLE_TYPE
,
570 TI_LONG_DOUBLE_PTR_TYPE
,
580 TI_VA_LIST_GPR_COUNTER_FIELD
,
581 TI_VA_LIST_FPR_COUNTER_FIELD
,
584 TI_POINTER_SIZED_TYPE
,
586 TI_POINTER_BOUNDS_TYPE
,
591 TI_DFLOAT32_PTR_TYPE
,
592 TI_DFLOAT64_PTR_TYPE
,
593 TI_DFLOAT128_PTR_TYPE
,
606 TI_SAT_ULLFRACT_TYPE
,
622 TI_SAT_ULLACCUM_TYPE
,
668 TI_OPTIMIZATION_DEFAULT
,
669 TI_OPTIMIZATION_CURRENT
,
670 TI_TARGET_OPTION_DEFAULT
,
671 TI_TARGET_OPTION_CURRENT
,
672 TI_CURRENT_TARGET_PRAGMA
,
673 TI_CURRENT_OPTIMIZE_PRAGMA
,
678 /* An enumeration of the standard C integer types. These must be
679 ordered so that shorter types appear before longer ones, and so
680 that signed types appear before unsigned ones, for the correct
681 functioning of interpret_integer() in c-lex.c. */
682 enum integer_type_kind
{
693 itk_unsigned_long_long
,
707 /* A pointer-to-function member type looks like:
714 If __pfn is NULL, it is a NULL pointer-to-member-function.
716 (Because the vtable is always the first thing in the object, we
717 don't need its offset.) If the function is virtual, then PFN is
718 one plus twice the index into the vtable; otherwise, it is just a
719 pointer to the function.
721 Unfortunately, using the lowest bit of PFN doesn't work in
722 architectures that don't impose alignment requirements on function
723 addresses, or that use the lowest bit to tell one ISA from another,
724 for example. For such architectures, we use the lowest bit of
725 DELTA instead of the lowest bit of the PFN, and DELTA will be
727 enum ptrmemfunc_vbit_where_t
{
728 ptrmemfunc_vbit_in_pfn
,
729 ptrmemfunc_vbit_in_delta
732 /* Flags that may be passed in the third argument of decl_attributes, and
733 to handler functions for attributes. */
734 enum attribute_flags
{
735 /* The type passed in is the type of a DECL, and any attributes that
736 should be passed in again to be applied to the DECL rather than the
737 type should be returned. */
738 ATTR_FLAG_DECL_NEXT
= 1,
739 /* The type passed in is a function return type, and any attributes that
740 should be passed in again to be applied to the function type rather
741 than the return type should be returned. */
742 ATTR_FLAG_FUNCTION_NEXT
= 2,
743 /* The type passed in is an array element type, and any attributes that
744 should be passed in again to be applied to the array type rather
745 than the element type should be returned. */
746 ATTR_FLAG_ARRAY_NEXT
= 4,
747 /* The type passed in is a structure, union or enumeration type being
748 created, and should be modified in place. */
749 ATTR_FLAG_TYPE_IN_PLACE
= 8,
750 /* The attributes are being applied by default to a library function whose
751 name indicates known behavior, and should be silently ignored if they
752 are not in fact compatible with the function type. */
753 ATTR_FLAG_BUILT_IN
= 16,
754 /* A given attribute has been parsed as a C++-11 attribute. */
758 /* Types used to represent sizes. */
759 enum size_type_kind
{
760 stk_sizetype
, /* Normal representation of sizes in bytes. */
761 stk_ssizetype
, /* Signed representation of sizes in bytes. */
762 stk_bitsizetype
, /* Normal representation of sizes in bits. */
763 stk_sbitsizetype
, /* Signed representation of sizes in bits. */
767 enum operand_equal_flag
{
770 OEP_MATCH_SIDE_EFFECTS
= 4,
772 /* Internal within operand_equal_p: */
773 OEP_NO_HASH_CHECK
= 16,
774 /* Internal within inchash::add_expr: */
778 /* Enum and arrays used for tree allocation stats.
779 Keep in sync with tree.c:tree_node_kind_names. */
780 enum tree_node_kind
{
800 enum annot_expr_kind
{
801 annot_expr_ivdep_kind
,
802 annot_expr_no_vector_kind
,
803 annot_expr_vector_kind
,
807 /*---------------------------------------------------------------------------
809 ---------------------------------------------------------------------------*/
810 /* When processing aliases at the symbol table level, we need the
811 declaration of target. For this reason we need to queue aliases and
812 process them after all declarations has been produced. */
813 struct GTY(()) alias_pair
{
818 /* An initialization priority. */
819 typedef unsigned short priority_type
;
821 /* The type of a callback function for walking over tree structure. */
822 typedef tree (*walk_tree_fn
) (tree
*, int *, void *);
824 /* The type of a callback function that represents a custom walk_tree. */
825 typedef tree (*walk_tree_lh
) (tree
*, int *, tree (*) (tree
*, int *, void *),
826 void *, hash_set
<tree
> *);
829 /*---------------------------------------------------------------------------
831 ---------------------------------------------------------------------------*/
832 /* A tree node can represent a data type, a variable, an expression
833 or a statement. Each node has a TREE_CODE which says what kind of
834 thing it represents. Some common codes are:
835 INTEGER_TYPE -- represents a type of integers.
836 ARRAY_TYPE -- represents a type of pointer.
837 VAR_DECL -- represents a declared variable.
838 INTEGER_CST -- represents a constant integer value.
839 PLUS_EXPR -- represents a sum (an expression).
841 As for the contents of a tree node: there are some fields
842 that all nodes share. Each TREE_CODE has various special-purpose
843 fields as well. The fields of a node are never accessed directly,
844 always through accessor macros. */
846 /* Every kind of tree node starts with this structure,
847 so all nodes have these fields.
849 See the accessor macros, defined below, for documentation of the
850 fields, and the table below which connects the fields and the
853 struct GTY(()) tree_base
{
854 ENUM_BITFIELD(tree_code
) code
: 16;
856 unsigned side_effects_flag
: 1;
857 unsigned constant_flag
: 1;
858 unsigned addressable_flag
: 1;
859 unsigned volatile_flag
: 1;
860 unsigned readonly_flag
: 1;
861 unsigned asm_written_flag
: 1;
862 unsigned nowarning_flag
: 1;
863 unsigned visited
: 1;
865 unsigned used_flag
: 1;
866 unsigned nothrow_flag
: 1;
867 unsigned static_flag
: 1;
868 unsigned public_flag
: 1;
869 unsigned private_flag
: 1;
870 unsigned protected_flag
: 1;
871 unsigned deprecated_flag
: 1;
872 unsigned default_def_flag
: 1;
875 /* The bits in the following structure should only be used with
876 accessor macros that constrain inputs with tree checking. */
878 unsigned lang_flag_0
: 1;
879 unsigned lang_flag_1
: 1;
880 unsigned lang_flag_2
: 1;
881 unsigned lang_flag_3
: 1;
882 unsigned lang_flag_4
: 1;
883 unsigned lang_flag_5
: 1;
884 unsigned lang_flag_6
: 1;
885 unsigned saturating_flag
: 1;
887 unsigned unsigned_flag
: 1;
888 unsigned packed_flag
: 1;
889 unsigned user_align
: 1;
890 unsigned nameless_flag
: 1;
891 unsigned atomic_flag
: 1;
896 /* This field is only used with TREE_TYPE nodes; the only reason it is
897 present in tree_base instead of tree_type is to save space. The size
898 of the field must be large enough to hold addr_space_t values. */
899 unsigned address_space
: 8;
902 /* The following fields are present in tree_base to save space. The
903 nodes using them do not require any of the flags above and so can
904 make better use of the 4-byte sized word. */
906 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
908 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
909 its native precision. */
910 unsigned char unextended
;
912 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
913 wider precisions based on its TYPE_SIGN. */
914 unsigned char extended
;
916 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
917 offset_int precision, with smaller integers being extended
918 according to their TYPE_SIGN. This is equal to one of the two
919 fields above but is cached for speed. */
920 unsigned char offset
;
923 /* VEC length. This field is only used with TREE_VEC. */
926 /* SSA version number. This field is only used with SSA_NAME. */
927 unsigned int version
;
929 /* Internal function code. */
930 enum internal_fn ifn
;
932 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
933 expression trees and specify known data non-dependences. For
934 two memory references in a function they are known to not
935 alias if dependence_info.clique are equal and dependence_info.base
938 unsigned short clique
;
944 /* The following table lists the uses of each of the above flags and
945 for which types of nodes they are defined.
950 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
953 CONSTRUCTOR, IDENTIFIER_NODE
956 CALL_EXPR_TAILCALL in
962 PREDICT_EXPR_OUTCOME in
968 VAR_DECL, FUNCTION_DECL
971 TREE_NO_TRAMPOLINE in
977 TREE_SYMBOL_REFERENCED in
981 TARGET_EXPR, WITH_CLEANUP_EXPR
983 TRY_CATCH_IS_CLEANUP in
989 TYPE_REF_CAN_ALIAS_ALL in
990 POINTER_TYPE, REFERENCE_TYPE
998 TRANSACTION_EXPR_OUTER in
1001 SSA_NAME_ANTI_RANGE_P in
1010 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1013 VAR_DECL, FUNCTION_DECL
1016 CONSTRUCTOR_NO_CLEARING in
1022 CALL_EXPR_VA_ARG_PACK in
1025 TYPE_CACHED_VALUES_P in
1028 SAVE_EXPR_RESOLVED_P in
1031 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1032 OMP_CLAUSE_LASTPRIVATE
1034 OMP_CLAUSE_PRIVATE_DEBUG in
1037 OMP_CLAUSE_LINEAR_NO_COPYIN in
1040 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1043 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1044 OMP_CLAUSE_REDUCTION
1046 TRANSACTION_EXPR_RELAXED in
1054 CALL_EXPR_RETURN_SLOT_OPT in
1060 OMP_PARALLEL_COMBINED in
1063 OMP_ATOMIC_SEQ_CST in
1066 OMP_CLAUSE_PRIVATE_OUTER_REF in
1069 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1072 TYPE_REF_IS_RVALUE in
1084 CALL_FROM_THUNK_P and
1085 CALL_ALLOCA_FOR_VAR_P in
1088 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1093 TREE_SIDE_EFFECTS in
1103 TREE_THIS_VOLATILE in
1126 TYPE_SIZES_GIMPLIFIED in
1140 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1141 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1144 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1164 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1166 SSA_NAME_IN_FREE_LIST in
1178 IDENTIFIER_TRANSPARENT_ALIAS in
1184 all trees (used liberally by many passes)
1188 TYPE_REVERSE_STORAGE_ORDER in
1189 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1194 VAR_DECL_IS_VIRTUAL_OPERAND in
1209 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1211 TYPE_VECTOR_OPAQUE in
1214 SSA_NAME_IS_DEFAULT_DEF in
1217 DECL_NONLOCAL_FRAME in
1220 REF_REVERSE_STORAGE_ORDER in
1221 BIT_FIELD_REF, MEM_REF
1224 struct GTY(()) tree_typed
{
1225 struct tree_base base
;
1229 struct GTY(()) tree_common
{
1230 struct tree_typed typed
;
1234 struct GTY(()) tree_int_cst
{
1235 struct tree_typed typed
;
1236 HOST_WIDE_INT val
[1];
1240 struct GTY(()) tree_real_cst
{
1241 struct tree_typed typed
;
1242 struct real_value
* real_cst_ptr
;
1245 struct GTY(()) tree_fixed_cst
{
1246 struct tree_typed typed
;
1247 struct fixed_value
* fixed_cst_ptr
;
1250 struct GTY(()) tree_string
{
1251 struct tree_typed typed
;
1256 struct GTY(()) tree_complex
{
1257 struct tree_typed typed
;
1262 struct GTY(()) tree_vector
{
1263 struct tree_typed typed
;
1264 tree
GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts
[1];
1267 struct GTY(()) tree_identifier
{
1268 struct tree_common common
;
1269 struct ht_identifier id
;
1272 struct GTY(()) tree_list
{
1273 struct tree_common common
;
1278 struct GTY(()) tree_vec
{
1279 struct tree_common common
;
1280 tree
GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a
[1];
1283 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1284 element. INDEX can optionally design the position of VALUE: in arrays,
1285 it is the index where VALUE has to be placed; in structures, it is the
1286 FIELD_DECL of the member. */
1287 struct GTY(()) constructor_elt
{
1292 struct GTY(()) tree_constructor
{
1293 struct tree_typed typed
;
1294 vec
<constructor_elt
, va_gc
> *elts
;
1297 enum omp_clause_depend_kind
1299 OMP_CLAUSE_DEPEND_IN
,
1300 OMP_CLAUSE_DEPEND_OUT
,
1301 OMP_CLAUSE_DEPEND_INOUT
,
1302 OMP_CLAUSE_DEPEND_SOURCE
,
1303 OMP_CLAUSE_DEPEND_SINK
,
1304 OMP_CLAUSE_DEPEND_LAST
1307 enum omp_clause_proc_bind_kind
1309 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1310 OMP_CLAUSE_PROC_BIND_FALSE
= 0,
1311 OMP_CLAUSE_PROC_BIND_TRUE
= 1,
1312 OMP_CLAUSE_PROC_BIND_MASTER
= 2,
1313 OMP_CLAUSE_PROC_BIND_CLOSE
= 3,
1314 OMP_CLAUSE_PROC_BIND_SPREAD
= 4,
1315 OMP_CLAUSE_PROC_BIND_LAST
1318 enum omp_clause_linear_kind
1320 OMP_CLAUSE_LINEAR_DEFAULT
,
1321 OMP_CLAUSE_LINEAR_REF
,
1322 OMP_CLAUSE_LINEAR_VAL
,
1323 OMP_CLAUSE_LINEAR_UVAL
1326 struct GTY(()) tree_exp
{
1327 struct tree_typed typed
;
1329 tree
GTY ((special ("tree_exp"),
1330 desc ("TREE_CODE ((tree) &%0)")))
1334 /* Immediate use linking structure. This structure is used for maintaining
1335 a doubly linked list of uses of an SSA_NAME. */
1336 struct GTY(()) ssa_use_operand_t
{
1337 struct ssa_use_operand_t
* GTY((skip(""))) prev
;
1338 struct ssa_use_operand_t
* GTY((skip(""))) next
;
1339 /* Immediate uses for a given SSA name are maintained as a cyclic
1340 list. To recognize the root of this list, the location field
1341 needs to point to the original SSA name. Since statements and
1342 SSA names are of different data types, we need this union. See
1343 the explanation in struct imm_use_iterator. */
1344 union { gimple
*stmt
; tree ssa_name
; } GTY((skip(""))) loc
;
1345 tree
*GTY((skip(""))) use
;
1348 struct GTY(()) tree_ssa_name
{
1349 struct tree_typed typed
;
1351 /* _DECL wrapped by this SSA name. */
1354 /* Statement that defines this SSA name. */
1357 /* Value range information. */
1358 union ssa_name_info_type
{
1359 /* Pointer attributes used for alias analysis. */
1360 struct GTY ((tag ("0"))) ptr_info_def
*ptr_info
;
1361 /* Value range attributes used for zero/sign extension elimination. */
1362 struct GTY ((tag ("1"))) range_info_def
*range_info
;
1363 } GTY ((desc ("%1.typed.type ?" \
1364 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info
;
1366 /* Immediate uses list for this SSA_NAME. */
1367 struct ssa_use_operand_t imm_uses
;
1370 struct GTY(()) phi_arg_d
{
1371 /* imm_use MUST be the first element in struct because we do some
1372 pointer arithmetic with it. See phi_arg_index_from_use. */
1373 struct ssa_use_operand_t imm_use
;
1378 struct GTY(()) tree_omp_clause
{
1379 struct tree_common common
;
1381 enum omp_clause_code code
;
1382 union omp_clause_subcode
{
1383 enum omp_clause_default_kind default_kind
;
1384 enum omp_clause_schedule_kind schedule_kind
;
1385 enum omp_clause_depend_kind depend_kind
;
1386 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1387 unsigned int map_kind
;
1388 enum omp_clause_proc_bind_kind proc_bind_kind
;
1389 enum tree_code reduction_code
;
1390 enum omp_clause_linear_kind linear_kind
;
1391 enum tree_code if_modifier
;
1392 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1393 construct describes. */
1394 unsigned int dimension
;
1395 } GTY ((skip
)) subcode
;
1397 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1399 gimple_seq gimple_reduction_init
;
1400 gimple_seq gimple_reduction_merge
;
1402 tree
GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1406 struct GTY(()) tree_block
{
1407 struct tree_base base
;
1410 unsigned abstract_flag
: 1;
1411 unsigned block_num
: 31;
1414 location_t end_locus
;
1417 vec
<tree
, va_gc
> *nonlocalized_vars
;
1421 tree abstract_origin
;
1422 tree fragment_origin
;
1423 tree fragment_chain
;
1425 /* Pointer to the DWARF lexical block. */
1426 struct die_struct
*die
;
1429 struct GTY(()) tree_type_common
{
1430 struct tree_common common
;
1436 unsigned int precision
: 10;
1437 unsigned no_force_blk_flag
: 1;
1438 unsigned needs_constructing_flag
: 1;
1439 unsigned transparent_aggr_flag
: 1;
1440 unsigned restrict_flag
: 1;
1441 unsigned contains_placeholder_bits
: 2;
1443 ENUM_BITFIELD(machine_mode
) mode
: 8;
1445 unsigned string_flag
: 1;
1446 unsigned lang_flag_0
: 1;
1447 unsigned lang_flag_1
: 1;
1448 unsigned lang_flag_2
: 1;
1449 unsigned lang_flag_3
: 1;
1450 unsigned lang_flag_4
: 1;
1451 unsigned lang_flag_5
: 1;
1452 unsigned lang_flag_6
: 1;
1454 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1455 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1456 the latter being usually the larger. For ELF it is 8<<28,
1457 so we need to store the value 32 (not 31, as we need the zero
1458 as well), hence six bits. */
1460 unsigned spare
: 26;
1461 alias_set_type alias_set
;
1464 union tree_type_symtab
{
1465 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address
;
1466 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer
;
1467 struct die_struct
* GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die
;
1468 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab
;
1476 struct GTY(()) tree_type_with_lang_specific
{
1477 struct tree_type_common common
;
1478 /* Points to a structure whose details depend on the language in use. */
1479 struct lang_type
*lang_specific
;
1482 struct GTY(()) tree_type_non_common
{
1483 struct tree_type_with_lang_specific with_lang_specific
;
1490 struct GTY (()) tree_binfo
{
1491 struct tree_common common
;
1497 vec
<tree
, va_gc
> *base_accesses
;
1503 vec
<tree
, va_gc
> base_binfos
;
1506 struct GTY(()) tree_decl_minimal
{
1507 struct tree_common common
;
1514 struct GTY(()) tree_decl_common
{
1515 struct tree_decl_minimal common
;
1518 ENUM_BITFIELD(machine_mode
) mode
: 8;
1520 unsigned nonlocal_flag
: 1;
1521 unsigned virtual_flag
: 1;
1522 unsigned ignored_flag
: 1;
1523 unsigned abstract_flag
: 1;
1524 unsigned artificial_flag
: 1;
1525 unsigned preserve_flag
: 1;
1526 unsigned debug_expr_is_from
: 1;
1528 unsigned lang_flag_0
: 1;
1529 unsigned lang_flag_1
: 1;
1530 unsigned lang_flag_2
: 1;
1531 unsigned lang_flag_3
: 1;
1532 unsigned lang_flag_4
: 1;
1533 unsigned lang_flag_5
: 1;
1534 unsigned lang_flag_6
: 1;
1535 unsigned lang_flag_7
: 1;
1536 unsigned lang_flag_8
: 1;
1538 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1539 unsigned decl_flag_0
: 1;
1540 /* In FIELD_DECL, this is DECL_BIT_FIELD
1541 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1542 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1543 unsigned decl_flag_1
: 1;
1544 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1545 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1546 DECL_HAS_VALUE_EXPR_P. */
1547 unsigned decl_flag_2
: 1;
1549 unsigned decl_flag_3
: 1;
1550 /* Logically, these two would go in a theoretical base shared by var and
1552 unsigned gimple_reg_flag
: 1;
1553 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1554 unsigned decl_by_reference_flag
: 1;
1555 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1556 unsigned decl_read_flag
: 1;
1557 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1558 unsigned decl_nonshareable_flag
: 1;
1560 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1561 unsigned int off_align
: 6;
1563 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1564 unsigned int align
: 6;
1566 /* 20 bits unused. */
1568 /* UID for points-to sets, stable over copying from inlining. */
1569 unsigned int pt_uid
;
1574 tree abstract_origin
;
1576 /* Points to a structure whose details depend on the language in use. */
1577 struct lang_decl
*lang_specific
;
1580 struct GTY(()) tree_decl_with_rtl
{
1581 struct tree_decl_common common
;
1585 struct GTY(()) tree_field_decl
{
1586 struct tree_decl_common common
;
1589 tree bit_field_type
;
1595 struct GTY(()) tree_label_decl
{
1596 struct tree_decl_with_rtl common
;
1598 int eh_landing_pad_nr
;
1601 struct GTY(()) tree_result_decl
{
1602 struct tree_decl_with_rtl common
;
1605 struct GTY(()) tree_const_decl
{
1606 struct tree_decl_common common
;
1609 struct GTY(()) tree_parm_decl
{
1610 struct tree_decl_with_rtl common
;
1614 struct GTY(()) tree_decl_with_vis
{
1615 struct tree_decl_with_rtl common
;
1616 tree assembler_name
;
1617 struct symtab_node
*symtab_node
;
1619 /* Belong to VAR_DECL exclusively. */
1620 unsigned defer_output
: 1;
1621 unsigned hard_register
: 1;
1622 unsigned common_flag
: 1;
1623 unsigned in_text_section
: 1;
1624 unsigned in_constant_pool
: 1;
1625 unsigned dllimport_flag
: 1;
1626 /* Don't belong to VAR_DECL exclusively. */
1627 unsigned weak_flag
: 1;
1629 unsigned seen_in_bind_expr
: 1;
1630 unsigned comdat_flag
: 1;
1631 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1632 ENUM_BITFIELD(symbol_visibility
) visibility
: 2;
1633 unsigned visibility_specified
: 1;
1635 /* Belong to FUNCTION_DECL exclusively. */
1636 unsigned init_priority_p
: 1;
1637 /* Used by C++ only. Might become a generic decl flag. */
1638 unsigned shadowed_for_var_p
: 1;
1639 /* Belong to FUNCTION_DECL exclusively. */
1640 unsigned cxx_constructor
: 1;
1641 /* Belong to FUNCTION_DECL exclusively. */
1642 unsigned cxx_destructor
: 1;
1643 /* Belong to FUNCTION_DECL exclusively. */
1645 /* Belong to FUNCTION_DECL exclusively. */
1646 unsigned regdecl_flag
: 1;
1647 /* 14 unused bits. */
1650 struct GTY(()) tree_var_decl
{
1651 struct tree_decl_with_vis common
;
1654 struct GTY(()) tree_decl_non_common
{
1655 struct tree_decl_with_vis common
;
1656 /* Almost all FE's use this. */
1660 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1661 arguments/result/saved_tree fields by front ends. It was either inherit
1662 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1663 which seemed a bit strange. */
1665 struct GTY(()) tree_function_decl
{
1666 struct tree_decl_non_common common
;
1670 /* Arguments of the function. */
1672 /* The personality function. Used for stack unwinding. */
1675 /* Function specific options that are used by this function. */
1676 tree function_specific_target
; /* target options */
1677 tree function_specific_optimization
; /* optimization options */
1679 /* Generic function body. */
1681 /* Index within a virtual table. */
1684 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1685 DECL_FUNCTION_CODE. Otherwise unused.
1686 ??? The bitfield needs to be able to hold all target function
1688 ENUM_BITFIELD(built_in_function
) function_code
: 12;
1689 ENUM_BITFIELD(built_in_class
) built_in_class
: 2;
1691 unsigned static_ctor_flag
: 1;
1692 unsigned static_dtor_flag
: 1;
1694 unsigned uninlinable
: 1;
1695 unsigned possibly_inlined
: 1;
1696 unsigned novops_flag
: 1;
1697 unsigned returns_twice_flag
: 1;
1698 unsigned malloc_flag
: 1;
1699 unsigned operator_new_flag
: 1;
1700 unsigned declared_inline_flag
: 1;
1701 unsigned no_inline_warning_flag
: 1;
1703 unsigned no_instrument_function_entry_exit
: 1;
1704 unsigned no_limit_stack
: 1;
1705 unsigned disregard_inline_limits
: 1;
1706 unsigned pure_flag
: 1;
1707 unsigned looping_const_or_pure_flag
: 1;
1708 unsigned has_debug_args_flag
: 1;
1709 unsigned tm_clone_flag
: 1;
1710 unsigned versioned_function
: 1;
1714 struct GTY(()) tree_translation_unit_decl
{
1715 struct tree_decl_common common
;
1716 /* Source language of this translation unit. Used for DWARF output. */
1717 const char * GTY((skip(""))) language
;
1718 /* TODO: Non-optimization used to build this translation unit. */
1719 /* TODO: Root of a partial DWARF tree for global types and decls. */
1722 struct GTY(()) tree_type_decl
{
1723 struct tree_decl_non_common common
;
1727 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1729 struct tree_statement_list_node
*prev
;
1730 struct tree_statement_list_node
*next
;
1734 struct GTY(()) tree_statement_list
1736 struct tree_typed typed
;
1737 struct tree_statement_list_node
*head
;
1738 struct tree_statement_list_node
*tail
;
1742 /* Optimization options used by a function. */
1744 struct GTY(()) tree_optimization_option
{
1745 struct tree_common common
;
1747 /* The optimization options used by the user. */
1748 struct cl_optimization
*opts
;
1750 /* Target optabs for this set of optimization options. This is of
1751 type `struct target_optabs *'. */
1752 void *GTY ((atomic
)) optabs
;
1754 /* The value of this_target_optabs against which the optabs above were
1756 struct target_optabs
*GTY ((skip
)) base_optabs
;
1759 /* Forward declaration, defined in target-globals.h. */
1761 struct GTY(()) target_globals
;
1763 /* Target options used by a function. */
1765 struct GTY(()) tree_target_option
{
1766 struct tree_common common
;
1768 /* Target globals for the corresponding target option. */
1769 struct target_globals
*globals
;
1771 /* The optimization options used by the user. */
1772 struct cl_target_option
*opts
;
1775 /* Define the overall contents of a tree node.
1776 It may be any of the structures declared above
1777 for various types of node. */
1778 union GTY ((ptr_alias (union lang_tree_node
),
1779 desc ("tree_node_structure (&%h)"), variable_size
)) tree_node
{
1780 struct tree_base
GTY ((tag ("TS_BASE"))) base
;
1781 struct tree_typed
GTY ((tag ("TS_TYPED"))) typed
;
1782 struct tree_common
GTY ((tag ("TS_COMMON"))) common
;
1783 struct tree_int_cst
GTY ((tag ("TS_INT_CST"))) int_cst
;
1784 struct tree_real_cst
GTY ((tag ("TS_REAL_CST"))) real_cst
;
1785 struct tree_fixed_cst
GTY ((tag ("TS_FIXED_CST"))) fixed_cst
;
1786 struct tree_vector
GTY ((tag ("TS_VECTOR"))) vector
;
1787 struct tree_string
GTY ((tag ("TS_STRING"))) string
;
1788 struct tree_complex
GTY ((tag ("TS_COMPLEX"))) complex;
1789 struct tree_identifier
GTY ((tag ("TS_IDENTIFIER"))) identifier
;
1790 struct tree_decl_minimal
GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal
;
1791 struct tree_decl_common
GTY ((tag ("TS_DECL_COMMON"))) decl_common
;
1792 struct tree_decl_with_rtl
GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl
;
1793 struct tree_decl_non_common
GTY ((tag ("TS_DECL_NON_COMMON")))
1795 struct tree_parm_decl
GTY ((tag ("TS_PARM_DECL"))) parm_decl
;
1796 struct tree_decl_with_vis
GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis
;
1797 struct tree_var_decl
GTY ((tag ("TS_VAR_DECL"))) var_decl
;
1798 struct tree_field_decl
GTY ((tag ("TS_FIELD_DECL"))) field_decl
;
1799 struct tree_label_decl
GTY ((tag ("TS_LABEL_DECL"))) label_decl
;
1800 struct tree_result_decl
GTY ((tag ("TS_RESULT_DECL"))) result_decl
;
1801 struct tree_const_decl
GTY ((tag ("TS_CONST_DECL"))) const_decl
;
1802 struct tree_type_decl
GTY ((tag ("TS_TYPE_DECL"))) type_decl
;
1803 struct tree_function_decl
GTY ((tag ("TS_FUNCTION_DECL"))) function_decl
;
1804 struct tree_translation_unit_decl
GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1805 translation_unit_decl
;
1806 struct tree_type_common
GTY ((tag ("TS_TYPE_COMMON"))) type_common
;
1807 struct tree_type_with_lang_specific
GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1808 type_with_lang_specific
;
1809 struct tree_type_non_common
GTY ((tag ("TS_TYPE_NON_COMMON")))
1811 struct tree_list
GTY ((tag ("TS_LIST"))) list
;
1812 struct tree_vec
GTY ((tag ("TS_VEC"))) vec
;
1813 struct tree_exp
GTY ((tag ("TS_EXP"))) exp
;
1814 struct tree_ssa_name
GTY ((tag ("TS_SSA_NAME"))) ssa_name
;
1815 struct tree_block
GTY ((tag ("TS_BLOCK"))) block
;
1816 struct tree_binfo
GTY ((tag ("TS_BINFO"))) binfo
;
1817 struct tree_statement_list
GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list
;
1818 struct tree_constructor
GTY ((tag ("TS_CONSTRUCTOR"))) constructor
;
1819 struct tree_omp_clause
GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause
;
1820 struct tree_optimization_option
GTY ((tag ("TS_OPTIMIZATION"))) optimization
;
1821 struct tree_target_option
GTY ((tag ("TS_TARGET_OPTION"))) target_option
;
1824 /* Structure describing an attribute and a function to handle it. */
1825 struct attribute_spec
{
1826 /* The name of the attribute (without any leading or trailing __),
1827 or NULL to mark the end of a table of attributes. */
1829 /* The minimum length of the list of arguments of the attribute. */
1831 /* The maximum length of the list of arguments of the attribute
1832 (-1 for no maximum). */
1834 /* Whether this attribute requires a DECL. If it does, it will be passed
1835 from types of DECLs, function return types and array element types to
1836 the DECLs, function types and array types respectively; but when
1837 applied to a type in any other circumstances, it will be ignored with
1838 a warning. (If greater control is desired for a given attribute,
1839 this should be false, and the flags argument to the handler may be
1840 used to gain greater control in that case.) */
1842 /* Whether this attribute requires a type. If it does, it will be passed
1843 from a DECL to the type of that DECL. */
1845 /* Whether this attribute requires a function (or method) type. If it does,
1846 it will be passed from a function pointer type to the target type,
1847 and from a function return type (which is not itself a function
1848 pointer type) to the function type. */
1849 bool function_type_required
;
1850 /* Function to handle this attribute. NODE points to the node to which
1851 the attribute is to be applied. If a DECL, it should be modified in
1852 place; if a TYPE, a copy should be created. NAME is the name of the
1853 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1854 of the arguments (which may be NULL). FLAGS gives further information
1855 about the context of the attribute. Afterwards, the attributes will
1856 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1857 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1858 as well as in any other cases when the attributes should not be added
1859 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1860 applied to another type or DECL later may be returned;
1861 otherwise the return value should be NULL_TREE. This pointer may be
1862 NULL if no special handling is required beyond the checks implied
1863 by the rest of this structure. */
1864 tree (*handler
) (tree
*node
, tree name
, tree args
,
1865 int flags
, bool *no_add_attrs
);
1866 /* Specifies if attribute affects type's identity. */
1867 bool affects_type_identity
;
1870 /* These functions allow a front-end to perform a manual layout of a
1871 RECORD_TYPE. (For instance, if the placement of subsequent fields
1872 depends on the placement of fields so far.) Begin by calling
1873 start_record_layout. Then, call place_field for each of the
1874 fields. Then, call finish_record_layout. See layout_type for the
1875 default way in which these functions are used. */
1876 typedef struct record_layout_info_s
{
1877 /* The RECORD_TYPE that we are laying out. */
1879 /* The offset into the record so far, in bytes, not including bits in
1882 /* The last known alignment of SIZE. */
1883 unsigned int offset_align
;
1884 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1886 /* The alignment of the record so far, in bits. */
1887 unsigned int record_align
;
1888 /* The alignment of the record so far, ignoring #pragma pack and
1889 __attribute__ ((packed)), in bits. */
1890 unsigned int unpacked_align
;
1891 /* The previous field laid out. */
1893 /* The static variables (i.e., class variables, as opposed to
1894 instance variables) encountered in T. */
1895 vec
<tree
, va_gc
> *pending_statics
;
1896 /* Bits remaining in the current alignment group */
1897 int remaining_in_alignment
;
1898 /* True if we've seen a packed field that didn't have normal
1899 alignment anyway. */
1900 int packed_maybe_necessary
;
1901 } *record_layout_info
;
1903 /* Iterator for going through the function arguments. */
1904 struct function_args_iterator
{
1905 tree next
; /* TREE_LIST pointing to the next argument */
1908 /* Structures to map from a tree to another tree. */
1909 struct GTY(()) tree_map_base
{
1913 /* Map from a tree to another tree. */
1915 struct GTY((for_user
)) tree_map
{
1916 struct tree_map_base base
;
1921 /* Map from a decl tree to another tree. */
1922 struct GTY((for_user
)) tree_decl_map
{
1923 struct tree_map_base base
;
1927 /* Map from a tree to an int. */
1928 struct GTY((for_user
)) tree_int_map
{
1929 struct tree_map_base base
;
1933 /* Map from a decl tree to a tree vector. */
1934 struct GTY((for_user
)) tree_vec_map
{
1935 struct tree_map_base base
;
1936 vec
<tree
, va_gc
> *to
;
1939 /* Abstract iterators for CALL_EXPRs. These static inline definitions
1940 have to go towards the end of tree.h so that union tree_node is fully
1941 defined by this point. */
1943 /* Structure containing iterator state. */
1944 struct call_expr_arg_iterator
{
1945 tree t
; /* the call_expr */
1946 int n
; /* argument count */
1947 int i
; /* next argument index */
1950 struct const_call_expr_arg_iterator
{
1951 const_tree t
; /* the call_expr */
1952 int n
; /* argument count */
1953 int i
; /* next argument index */
1956 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
1957 function, and flags. */
1958 struct GTY(()) builtin_info_type
{
1960 /* Whether the user can use <xxx> instead of explicitly using calls
1961 to __builtin_<xxx>. */
1962 unsigned implicit_p
: 1;
1963 /* Whether the user has provided a declaration of <xxx>. */
1964 unsigned declared_p
: 1;
1968 /*---------------------------------------------------------------------------
1970 ---------------------------------------------------------------------------*/
1971 /* Matrix describing the structures contained in a given tree code. */
1972 extern unsigned char tree_contains_struct
[MAX_TREE_CODES
][64];
1974 /* Class of tree given its code. */
1975 extern const enum tree_code_class tree_code_type
[];
1977 /* Each tree code class has an associated string representation.
1978 These must correspond to the tree_code_class entries. */
1979 extern const char *const tree_code_class_strings
[];
1981 /* Number of argument-words in each kind of tree-node. */
1982 extern const unsigned char tree_code_length
[];
1984 /* Vector of all alias pairs for global symbols. */
1985 extern GTY(()) vec
<alias_pair
, va_gc
> *alias_pairs
;
1987 /* Names of all the built_in classes. */
1988 extern const char *const built_in_class_names
[BUILT_IN_LAST
];
1990 /* Names of all the built_in functions. */
1991 extern const char * built_in_names
[(int) END_BUILTINS
];
1993 /* Number of operands and names for each OMP_CLAUSE node. */
1994 extern unsigned const char omp_clause_num_ops
[];
1995 extern const char * const omp_clause_code_name
[];
1997 /* A vector of all translation-units. */
1998 extern GTY (()) vec
<tree
, va_gc
> *all_translation_units
;
2000 /* Vector of standard trees used by the C compiler. */
2001 extern GTY(()) tree global_trees
[TI_MAX
];
2003 /* The standard C integer types. Use integer_type_kind to index into
2005 extern GTY(()) tree integer_types
[itk_none
];
2007 /* Types used to represent sizes. */
2008 extern GTY(()) tree sizetype_tab
[(int) stk_type_kind_last
];
2010 /* Arrays for keeping track of tree node statistics. */
2011 extern int tree_node_counts
[];
2012 extern int tree_node_sizes
[];
2014 /* True if we are in gimple form and the actions of the folders need to
2015 be restricted. False if we are not in gimple form and folding is not
2016 restricted to creating gimple expressions. */
2017 extern bool in_gimple_form
;
2019 /* Functional interface to the builtin functions. */
2020 extern GTY(()) builtin_info_type builtin_info
[(int)END_BUILTINS
];
2022 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2023 extern unsigned int maximum_field_alignment
;
2025 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2026 extern GTY(()) tree current_function_decl
;
2028 /* Nonzero means a FUNC_BEGIN label was emitted. */
2029 extern GTY(()) const char * current_function_func_begin_label
;
2031 #endif // GCC_TREE_CORE_H