1 /* Front-end tree definitions for GNU compiler.
2 Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
28 #include "statistics.h"
30 #include "double-int.h"
34 /* Codes of tree nodes */
36 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
37 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
40 #include "all-tree.def"
45 #undef END_OF_BASE_TREE_CODES
47 extern unsigned char tree_contains_struct[MAX_TREE_CODES][64];
48 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) (tree_contains_struct[(CODE)][(STRUCT)])
50 /* Number of language-independent tree codes. */
51 #define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
53 /* Tree code classes. */
55 /* Each tree_code has an associated code class represented by a
58 enum tree_code_class {
59 tcc_exceptional, /* An exceptional code (fits no category). */
60 tcc_constant, /* A constant. */
61 /* Order of tcc_type and tcc_declaration is important. */
62 tcc_type, /* A type object code. */
63 tcc_declaration, /* A declaration (also serving as variable refs). */
64 tcc_reference, /* A reference to storage. */
65 tcc_comparison, /* A comparison expression. */
66 tcc_unary, /* A unary arithmetic expression. */
67 tcc_binary, /* A binary arithmetic expression. */
68 tcc_statement, /* A statement expression, which have side effects
69 but usually no interesting value. */
70 tcc_vl_exp, /* A function call or other expression with a
71 variable-length operand vector. */
72 tcc_expression /* Any other expression. */
75 /* Each tree code class has an associated string representation.
76 These must correspond to the tree_code_class entries. */
78 extern const char *const tree_code_class_strings[];
80 /* Returns the string representing CLASS. */
82 #define TREE_CODE_CLASS_STRING(CLASS)\
83 tree_code_class_strings[(int) (CLASS)]
85 extern const enum tree_code_class tree_code_type[];
86 #define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
88 /* Nonzero if CODE represents an exceptional code. */
90 #define EXCEPTIONAL_CLASS_P(CODE)\
91 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
93 /* Nonzero if CODE represents a constant. */
95 #define CONSTANT_CLASS_P(CODE)\
96 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
98 /* Nonzero if CODE represents a type. */
100 #define TYPE_P(CODE)\
101 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
103 /* Nonzero if CODE represents a declaration. */
105 #define DECL_P(CODE)\
106 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
108 /* Nonzero if DECL represents a VAR_DECL or FUNCTION_DECL. */
110 #define VAR_OR_FUNCTION_DECL_P(DECL)\
111 (TREE_CODE (DECL) == VAR_DECL || TREE_CODE (DECL) == FUNCTION_DECL)
113 /* Nonzero if CODE represents a INDIRECT_REF. Keep these checks in
114 ascending code order. */
116 #define INDIRECT_REF_P(CODE)\
117 (TREE_CODE (CODE) == INDIRECT_REF \
118 || TREE_CODE (CODE) == ALIGN_INDIRECT_REF \
119 || TREE_CODE (CODE) == MISALIGNED_INDIRECT_REF)
121 /* Nonzero if CODE represents a reference. */
123 #define REFERENCE_CLASS_P(CODE)\
124 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
126 /* Nonzero if CODE represents a comparison. */
128 #define COMPARISON_CLASS_P(CODE)\
129 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
131 /* Nonzero if CODE represents a unary arithmetic expression. */
133 #define UNARY_CLASS_P(CODE)\
134 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
136 /* Nonzero if CODE represents a binary arithmetic expression. */
138 #define BINARY_CLASS_P(CODE)\
139 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
141 /* Nonzero if CODE represents a statement expression. */
143 #define STATEMENT_CLASS_P(CODE)\
144 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
146 /* Nonzero if CODE represents a function call-like expression with a
147 variable-length operand vector. */
149 #define VL_EXP_CLASS_P(CODE)\
150 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_vl_exp)
152 /* Nonzero if CODE represents any other expression. */
154 #define EXPRESSION_CLASS_P(CODE)\
155 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
157 /* Returns nonzero iff CODE represents a type or declaration. */
159 #define IS_TYPE_OR_DECL_P(CODE)\
160 (TYPE_P (CODE) || DECL_P (CODE))
162 /* Returns nonzero iff CLASS is the tree-code class of an
165 #define IS_EXPR_CODE_CLASS(CLASS)\
166 ((CLASS) >= tcc_reference && (CLASS) <= tcc_expression)
168 /* Returns nonzero iff NODE is an expression of some kind. */
170 #define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
172 /* Number of argument-words in each kind of tree-node. */
174 extern const unsigned char tree_code_length[];
175 #define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
177 /* Names of tree components. */
179 extern const char *const tree_code_name[];
181 /* A vectors of trees. */
183 DEF_VEC_ALLOC_P(tree,gc);
184 DEF_VEC_ALLOC_P(tree,heap);
187 /* Classify which part of the compiler has defined a given builtin function.
188 Note that we assume below that this is no more than two bits. */
197 /* Names for the above. */
198 extern const char *const built_in_class_names[4];
200 /* Codes that identify the various built in functions
201 so that expand_call can identify them quickly. */
203 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
204 enum built_in_function
206 #include "builtins.def"
208 /* Complex division routines in libgcc. These are done via builtins
209 because emit_library_call_value can't handle complex values. */
210 BUILT_IN_COMPLEX_MUL_MIN,
211 BUILT_IN_COMPLEX_MUL_MAX
212 = BUILT_IN_COMPLEX_MUL_MIN
213 + MAX_MODE_COMPLEX_FLOAT
214 - MIN_MODE_COMPLEX_FLOAT,
216 BUILT_IN_COMPLEX_DIV_MIN,
217 BUILT_IN_COMPLEX_DIV_MAX
218 = BUILT_IN_COMPLEX_DIV_MIN
219 + MAX_MODE_COMPLEX_FLOAT
220 - MIN_MODE_COMPLEX_FLOAT,
222 /* Upper bound on non-language-specific builtins. */
227 /* Names for the above. */
228 extern const char * built_in_names[(int) END_BUILTINS];
230 /* Helper macros for math builtins. */
232 #define BUILTIN_EXP10_P(FN) \
233 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
234 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
236 #define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
237 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
238 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
240 #define BUILTIN_SQRT_P(FN) \
241 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
243 #define BUILTIN_CBRT_P(FN) \
244 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
246 #define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
248 #define CASE_FLT_FN(FN) case FN: case FN##F: case FN##L
249 #define CASE_FLT_FN_REENT(FN) case FN##_R: case FN##F_R: case FN##L_R
250 #define CASE_INT_FN(FN) case FN: case FN##L: case FN##LL
252 /* An array of _DECL trees for the above. */
253 extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
254 extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
256 /* In an OMP_CLAUSE node. */
258 /* Number of operands and names for each clause. */
259 extern unsigned const char omp_clause_num_ops[];
260 extern const char * const omp_clause_code_name[];
262 /* Clause codes. Do not reorder, as this is used to index into the tables
263 omp_clause_num_ops and omp_clause_code_name. */
266 /* Clause zero is special-cased inside the parser
267 (c_parser_omp_variable_list). */
268 OMP_CLAUSE_ERROR = 0,
270 /* OpenMP clause: private (variable_list). */
273 /* OpenMP clause: shared (variable_list). */
276 /* OpenMP clause: firstprivate (variable_list). */
277 OMP_CLAUSE_FIRSTPRIVATE,
279 /* OpenMP clause: lastprivate (variable_list). */
280 OMP_CLAUSE_LASTPRIVATE,
282 /* OpenMP clause: reduction (operator:variable_list).
283 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
284 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
285 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
287 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
288 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. */
289 OMP_CLAUSE_REDUCTION,
291 /* OpenMP clause: copyin (variable_list). */
294 /* OpenMP clause: copyprivate (variable_list). */
295 OMP_CLAUSE_COPYPRIVATE,
297 /* OpenMP clause: if (scalar-expression). */
300 /* OpenMP clause: num_threads (integer-expression). */
301 OMP_CLAUSE_NUM_THREADS,
303 /* OpenMP clause: schedule. */
306 /* OpenMP clause: nowait. */
309 /* OpenMP clause: ordered. */
312 /* OpenMP clause: default. */
315 /* OpenMP clause: collapse (constant-integer-expression). */
318 /* OpenMP clause: untied. */
322 /* The definition of tree nodes fills the next several pages. */
324 /* A tree node can represent a data type, a variable, an expression
325 or a statement. Each node has a TREE_CODE which says what kind of
326 thing it represents. Some common codes are:
327 INTEGER_TYPE -- represents a type of integers.
328 ARRAY_TYPE -- represents a type of pointer.
329 VAR_DECL -- represents a declared variable.
330 INTEGER_CST -- represents a constant integer value.
331 PLUS_EXPR -- represents a sum (an expression).
333 As for the contents of a tree node: there are some fields
334 that all nodes share. Each TREE_CODE has various special-purpose
335 fields as well. The fields of a node are never accessed directly,
336 always through accessor macros. */
338 /* Every kind of tree node starts with this structure,
339 so all nodes have these fields.
341 See the accessor macros, defined below, for documentation of the
345 struct GTY(()) tree_base {
346 ENUM_BITFIELD(tree_code) code : 16;
348 unsigned side_effects_flag : 1;
349 unsigned constant_flag : 1;
350 unsigned addressable_flag : 1;
351 unsigned volatile_flag : 1;
352 unsigned readonly_flag : 1;
353 unsigned unsigned_flag : 1;
354 unsigned asm_written_flag: 1;
355 unsigned nowarning_flag : 1;
357 unsigned used_flag : 1;
358 unsigned nothrow_flag : 1;
359 unsigned static_flag : 1;
360 unsigned public_flag : 1;
361 unsigned private_flag : 1;
362 unsigned protected_flag : 1;
363 unsigned deprecated_flag : 1;
364 unsigned saturating_flag : 1;
366 unsigned default_def_flag : 1;
367 unsigned lang_flag_0 : 1;
368 unsigned lang_flag_1 : 1;
369 unsigned lang_flag_2 : 1;
370 unsigned lang_flag_3 : 1;
371 unsigned lang_flag_4 : 1;
372 unsigned lang_flag_5 : 1;
373 unsigned lang_flag_6 : 1;
375 unsigned visited : 1;
379 union tree_ann_d *ann;
382 struct GTY(()) tree_common {
383 struct tree_base base;
388 /* The following table lists the uses of each of the above flags and
389 for which types of nodes they are defined.
394 VAR_DECL, FUNCTION_DECL, FIELD_DECL, LABEL_DECL
396 CONSTRUCTOR, IDENTIFIER_NODE
397 STMT_EXPR, it means we want the result of the enclosed expression
399 CALL_EXPR_TAILCALL in
408 VAR_DECL, FUNCTION_DECL
411 TREE_NO_TRAMPOLINE in
417 TREE_SYMBOL_REFERENCED in
421 TARGET_EXPR, WITH_CLEANUP_EXPR
423 TRY_CATCH_IS_CLEANUP in
429 EH_FILTER_MUST_NOT_THROW in
432 TYPE_REF_CAN_ALIAS_ALL in
433 POINTER_TYPE, REFERENCE_TYPE
441 CALL_CANNOT_INLINE_P in
447 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
450 VAR_DECL, FUNCTION_DECL
456 CALL_EXPR_VA_ARG_PACK in
459 TYPE_CACHED_VALUES_P in
462 SAVE_EXPR_RESOLVED_P in
465 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
466 OMP_CLAUSE_LASTPRIVATE
468 OMP_CLAUSE_PRIVATE_DEBUG in
476 CALL_EXPR_RETURN_SLOT_OPT in
482 OMP_PARALLEL_COMBINED in
484 OMP_CLAUSE_PRIVATE_OUTER_REF in
508 TREE_THIS_VOLATILE in
531 TYPE_SIZES_GIMPLIFIED in
542 REGISTER_DEFS_IN_THIS_STMT in
543 all expressions (tree-into-ssa.c)
548 VAR_DECL, FUNCTION_DECL
549 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
550 BLOCK, SSA_NAME, STRING_CST
553 all expressions (tree-ssa-dce.c, tree-ssa-pre.c)
572 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
579 IDENTIFIER_TRANSPARENT_ALIAS in
582 STMT_IN_SSA_EDGE_WORKLIST in
583 all expressions (tree-ssa-propagate.c)
585 TYPE_VECTOR_OPAQUE in
591 all trees (used liberally by many passes)
606 SSA_NAME_IS_DEFAULT_DEF in
611 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
612 enum tree_node_structure_enum {
613 #include "treestruct.def"
618 /* Define accessors for the fields that all tree nodes have
619 (though some fields are not used for all kinds of nodes). */
621 /* The tree-code says what kind of node it is.
622 Codes are defined in tree.def. */
623 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->base.code)
624 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->base.code = (VALUE))
626 /* When checking is enabled, errors will be generated if a tree node
627 is accessed incorrectly. The macros die with a fatal error. */
628 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
630 #define TREE_CHECK(T, CODE) __extension__ \
631 ({ __typeof (T) const __t = (T); \
632 if (TREE_CODE (__t) != (CODE)) \
633 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
637 #define TREE_NOT_CHECK(T, CODE) __extension__ \
638 ({ __typeof (T) const __t = (T); \
639 if (TREE_CODE (__t) == (CODE)) \
640 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
644 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
645 ({ __typeof (T) const __t = (T); \
646 if (TREE_CODE (__t) != (CODE1) \
647 && TREE_CODE (__t) != (CODE2)) \
648 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
649 (CODE1), (CODE2), 0); \
652 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
653 ({ __typeof (T) const __t = (T); \
654 if (TREE_CODE (__t) == (CODE1) \
655 || TREE_CODE (__t) == (CODE2)) \
656 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
657 (CODE1), (CODE2), 0); \
660 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
661 ({ __typeof (T) const __t = (T); \
662 if (TREE_CODE (__t) != (CODE1) \
663 && TREE_CODE (__t) != (CODE2) \
664 && TREE_CODE (__t) != (CODE3)) \
665 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
666 (CODE1), (CODE2), (CODE3), 0); \
669 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
670 ({ __typeof (T) const __t = (T); \
671 if (TREE_CODE (__t) == (CODE1) \
672 || TREE_CODE (__t) == (CODE2) \
673 || TREE_CODE (__t) == (CODE3)) \
674 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
675 (CODE1), (CODE2), (CODE3), 0); \
678 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
679 ({ __typeof (T) const __t = (T); \
680 if (TREE_CODE (__t) != (CODE1) \
681 && TREE_CODE (__t) != (CODE2) \
682 && TREE_CODE (__t) != (CODE3) \
683 && TREE_CODE (__t) != (CODE4)) \
684 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
685 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
688 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
689 ({ __typeof (T) const __t = (T); \
690 if (TREE_CODE (__t) == (CODE1) \
691 || TREE_CODE (__t) == (CODE2) \
692 || TREE_CODE (__t) == (CODE3) \
693 || TREE_CODE (__t) == (CODE4)) \
694 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
695 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
698 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
699 ({ __typeof (T) const __t = (T); \
700 if (TREE_CODE (__t) != (CODE1) \
701 && TREE_CODE (__t) != (CODE2) \
702 && TREE_CODE (__t) != (CODE3) \
703 && TREE_CODE (__t) != (CODE4) \
704 && TREE_CODE (__t) != (CODE5)) \
705 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
706 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
709 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
710 ({ __typeof (T) const __t = (T); \
711 if (TREE_CODE (__t) == (CODE1) \
712 || TREE_CODE (__t) == (CODE2) \
713 || TREE_CODE (__t) == (CODE3) \
714 || TREE_CODE (__t) == (CODE4) \
715 || TREE_CODE (__t) == (CODE5)) \
716 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
717 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
720 #define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
721 ({ __typeof (T) const __t = (T); \
722 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
723 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
727 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
728 ({ __typeof (T) const __t = (T); \
729 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
730 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
734 #define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
735 ({ __typeof (T) const __t = (T); \
736 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
737 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
741 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
742 ({ __typeof (T) const __t = (T); \
743 if (TREE_CODE (__t) != OMP_CLAUSE) \
744 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
746 if (__t->omp_clause.code != (CODE)) \
747 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
751 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
752 ({ __typeof (T) const __t = (T); \
753 if (TREE_CODE (__t) != OMP_CLAUSE) \
754 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
756 if ((int) __t->omp_clause.code < (int) (CODE1) \
757 || (int) __t->omp_clause.code > (int) (CODE2)) \
758 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
759 __FUNCTION__, (CODE1), (CODE2)); \
762 /* These checks have to be special cased. */
763 #define EXPR_CHECK(T) __extension__ \
764 ({ __typeof (T) const __t = (T); \
765 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
766 if (!IS_EXPR_CODE_CLASS (__c)) \
767 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
771 /* These checks have to be special cased. */
772 #define NON_TYPE_CHECK(T) __extension__ \
773 ({ __typeof (T) const __t = (T); \
775 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
779 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
780 (*({__typeof (T) const __t = (T); \
781 const int __i = (I); \
782 if (TREE_CODE (__t) != TREE_VEC) \
783 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
785 if (__i < 0 || __i >= __t->vec.length) \
786 tree_vec_elt_check_failed (__i, __t->vec.length, \
787 __FILE__, __LINE__, __FUNCTION__); \
788 &__t->vec.a[__i]; }))
790 #define OMP_CLAUSE_ELT_CHECK(T, I) __extension__ \
791 (*({__typeof (T) const __t = (T); \
792 const int __i = (I); \
793 if (TREE_CODE (__t) != OMP_CLAUSE) \
794 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
796 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
797 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
799 &__t->omp_clause.ops[__i]; }))
801 /* Special checks for TREE_OPERANDs. */
802 #define TREE_OPERAND_CHECK(T, I) __extension__ \
803 (*({__typeof (T) const __t = EXPR_CHECK (T); \
804 const int __i = (I); \
805 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
806 tree_operand_check_failed (__i, __t, \
807 __FILE__, __LINE__, __FUNCTION__); \
808 &__t->exp.operands[__i]; }))
810 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
811 (*({__typeof (T) const __t = (T); \
812 const int __i = (I); \
813 if (TREE_CODE (__t) != CODE) \
814 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
815 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
816 tree_operand_check_failed (__i, __t, \
817 __FILE__, __LINE__, __FUNCTION__); \
818 &__t->exp.operands[__i]; }))
820 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
822 ({__typeof (T) const __t = (T); \
823 const int __i = (I); \
824 if (TREE_CODE (__t) != (CODE)) \
825 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
826 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
827 tree_operand_check_failed (__i, __t, \
828 __FILE__, __LINE__, __FUNCTION__); \
829 &__t->exp.operands[__i]; }))
831 /* Nodes are chained together for many purposes.
832 Types are chained together to record them for being output to the debugger
833 (see the function `chain_type').
834 Decls in the same scope are chained together to record the contents
836 Statement nodes for successive statements used to be chained together.
837 Often lists of things are represented by TREE_LIST nodes that
838 are chained together. */
840 #define TREE_CHAIN(NODE) __extension__ \
841 (*({__typeof (NODE) const __t = (NODE); \
842 &__t->common.chain; }))
844 /* In all nodes that are expressions, this is the data type of the expression.
845 In POINTER_TYPE nodes, this is the type that the pointer points to.
846 In ARRAY_TYPE nodes, this is the type of the elements.
847 In VECTOR_TYPE nodes, this is the type of the elements. */
848 #define TREE_TYPE(NODE) __extension__ \
849 (*({__typeof (NODE) const __t = (NODE); \
850 &__t->common.type; }))
852 extern void tree_contains_struct_check_failed (const_tree,
853 const enum tree_node_structure_enum,
854 const char *, int, const char *)
857 extern void tree_check_failed (const_tree, const char *, int, const char *,
858 ...) ATTRIBUTE_NORETURN;
859 extern void tree_not_check_failed (const_tree, const char *, int, const char *,
860 ...) ATTRIBUTE_NORETURN;
861 extern void tree_class_check_failed (const_tree, const enum tree_code_class,
862 const char *, int, const char *)
864 extern void tree_range_check_failed (const_tree, const char *, int,
865 const char *, enum tree_code,
867 extern void tree_not_class_check_failed (const_tree,
868 const enum tree_code_class,
869 const char *, int, const char *)
871 extern void tree_vec_elt_check_failed (int, int, const char *,
874 extern void phi_node_elt_check_failed (int, int, const char *,
877 extern void tree_operand_check_failed (int, const_tree,
878 const char *, int, const char *)
880 extern void omp_clause_check_failed (const_tree, const char *, int,
881 const char *, enum omp_clause_code)
883 extern void omp_clause_operand_check_failed (int, const_tree, const char *,
886 extern void omp_clause_range_check_failed (const_tree, const char *, int,
887 const char *, enum omp_clause_code,
888 enum omp_clause_code)
891 #else /* not ENABLE_TREE_CHECKING, or not gcc */
893 #define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
894 #define TREE_CHECK(T, CODE) (T)
895 #define TREE_NOT_CHECK(T, CODE) (T)
896 #define TREE_CHECK2(T, CODE1, CODE2) (T)
897 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
898 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
899 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
900 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
901 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
902 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
903 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
904 #define TREE_CLASS_CHECK(T, CODE) (T)
905 #define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
906 #define EXPR_CHECK(T) (T)
907 #define NON_TYPE_CHECK(T) (T)
908 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
909 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
910 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
911 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
912 #define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
913 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
914 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
916 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
917 #define TREE_TYPE(NODE) ((NODE)->common.type)
921 #define TREE_BLOCK(NODE) *(tree_block (NODE))
923 #include "tree-check.h"
925 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
926 #define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
927 #define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
928 #define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
929 #define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
930 #define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
931 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
932 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
933 #define VL_EXP_CHECK(T) TREE_CLASS_CHECK (T, tcc_vl_exp)
934 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
935 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
937 #define RECORD_OR_UNION_CHECK(T) \
938 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
939 #define NOT_RECORD_OR_UNION_CHECK(T) \
940 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
942 #define NUMERICAL_TYPE_CHECK(T) \
943 TREE_CHECK5 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE, \
946 /* Here is how primitive or already-canonicalized types' hash codes
948 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
950 /* A simple hash function for an arbitrary tree node. This must not be
951 used in hash tables which are saved to a PCH. */
952 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
954 /* Tests if CODE is a conversion expr (NOP_EXPR or CONVERT_EXPR). */
955 #define CONVERT_EXPR_CODE_P(CODE) \
956 ((CODE) == NOP_EXPR || (CODE) == CONVERT_EXPR)
958 /* Similarly, but accept an expressions instead of a tree code. */
959 #define CONVERT_EXPR_P(EXP) CONVERT_EXPR_CODE_P (TREE_CODE (EXP))
961 /* Generate case for NOP_EXPR, CONVERT_EXPR. */
963 #define CASE_CONVERT \
967 /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
968 that don't change the machine mode. */
970 #define STRIP_NOPS(EXP) \
971 while ((CONVERT_EXPR_P (EXP) \
972 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
973 && TREE_OPERAND (EXP, 0) != error_mark_node \
974 && (TYPE_MODE (TREE_TYPE (EXP)) \
975 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
976 (EXP) = TREE_OPERAND (EXP, 0)
978 /* Like STRIP_NOPS, but don't let the signedness change either. */
980 #define STRIP_SIGN_NOPS(EXP) \
981 while ((CONVERT_EXPR_P (EXP) \
982 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
983 && TREE_OPERAND (EXP, 0) != error_mark_node \
984 && (TYPE_MODE (TREE_TYPE (EXP)) \
985 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
986 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
987 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
988 && (POINTER_TYPE_P (TREE_TYPE (EXP)) \
989 == POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
990 (EXP) = TREE_OPERAND (EXP, 0)
992 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
994 #define STRIP_TYPE_NOPS(EXP) \
995 while ((CONVERT_EXPR_P (EXP) \
996 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
997 && TREE_OPERAND (EXP, 0) != error_mark_node \
998 && (TREE_TYPE (EXP) \
999 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
1000 (EXP) = TREE_OPERAND (EXP, 0)
1002 /* Remove unnecessary type conversions according to
1003 tree_ssa_useless_type_conversion. */
1005 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
1006 while (tree_ssa_useless_type_conversion (EXP)) \
1007 EXP = TREE_OPERAND (EXP, 0)
1009 /* Nonzero if TYPE represents an integral type. Note that we do not
1010 include COMPLEX types here. Keep these checks in ascending code
1013 #define INTEGRAL_TYPE_P(TYPE) \
1014 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
1015 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
1016 || TREE_CODE (TYPE) == INTEGER_TYPE)
1018 /* Nonzero if TYPE represents a non-saturating fixed-point type. */
1020 #define NON_SAT_FIXED_POINT_TYPE_P(TYPE) \
1021 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && !TYPE_SATURATING (TYPE))
1023 /* Nonzero if TYPE represents a saturating fixed-point type. */
1025 #define SAT_FIXED_POINT_TYPE_P(TYPE) \
1026 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && TYPE_SATURATING (TYPE))
1028 /* Nonzero if TYPE represents a fixed-point type. */
1030 #define FIXED_POINT_TYPE_P(TYPE) (TREE_CODE (TYPE) == FIXED_POINT_TYPE)
1032 /* Nonzero if TYPE represents a scalar floating-point type. */
1034 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
1036 /* Nonzero if TYPE represents a complex floating-point type. */
1038 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
1039 (TREE_CODE (TYPE) == COMPLEX_TYPE \
1040 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1042 /* Nonzero if TYPE represents a vector floating-point type. */
1044 #define VECTOR_FLOAT_TYPE_P(TYPE) \
1045 (TREE_CODE (TYPE) == VECTOR_TYPE \
1046 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1048 /* Nonzero if TYPE represents a floating-point type, including complex
1049 and vector floating-point types. The vector and complex check does
1050 not use the previous two macros to enable early folding. */
1052 #define FLOAT_TYPE_P(TYPE) \
1053 (SCALAR_FLOAT_TYPE_P (TYPE) \
1054 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
1055 || TREE_CODE (TYPE) == VECTOR_TYPE) \
1056 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
1058 /* Nonzero if TYPE represents a decimal floating-point type. */
1059 #define DECIMAL_FLOAT_TYPE_P(TYPE) \
1060 (SCALAR_FLOAT_TYPE_P (TYPE) \
1061 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
1063 /* Nonzero if TYPE represents an aggregate (multi-component) type.
1064 Keep these checks in ascending code order. */
1066 #define AGGREGATE_TYPE_P(TYPE) \
1067 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
1068 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
1070 /* Nonzero if TYPE represents a pointer or reference type.
1071 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
1072 ascending code order. */
1074 #define POINTER_TYPE_P(TYPE) \
1075 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
1077 /* Nonzero if this type is a complete type. */
1078 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
1080 /* Nonzero if this type is the (possibly qualified) void type. */
1081 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
1083 /* Nonzero if this type is complete or is cv void. */
1084 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
1085 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
1087 /* Nonzero if this type is complete or is an array with unspecified bound. */
1088 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1089 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1092 /* Define many boolean fields that all tree nodes have. */
1094 /* In VAR_DECL nodes, nonzero means address of this is needed.
1095 So it cannot be in a register.
1096 In a FUNCTION_DECL, nonzero means its address is needed.
1097 So it must be compiled even if it is an inline function.
1098 In a FIELD_DECL node, it means that the programmer is permitted to
1099 construct the address of this field. This is used for aliasing
1100 purposes: see record_component_aliases.
1101 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1102 In LABEL_DECL nodes, it means a goto for this label has been seen
1103 from a place outside all binding contours that restore stack levels.
1104 In ..._TYPE nodes, it means that objects of this type must
1105 be fully addressable. This means that pieces of this
1106 object cannot go into register parameters, for example.
1107 In IDENTIFIER_NODEs, this means that some extern decl for this name
1108 had its address taken. That matters for inline functions. */
1109 #define TREE_ADDRESSABLE(NODE) ((NODE)->base.addressable_flag)
1111 /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1112 exit of a function. Calls for which this is true are candidates for tail
1113 call optimizations. */
1114 #define CALL_EXPR_TAILCALL(NODE) \
1115 (CALL_EXPR_CHECK(NODE)->base.addressable_flag)
1117 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1118 CASE_LOW operand has been processed. */
1119 #define CASE_LOW_SEEN(NODE) \
1120 (CASE_LABEL_EXPR_CHECK (NODE)->base.addressable_flag)
1122 #define PREDICT_EXPR_OUTCOME(NODE) \
1123 ((enum prediction) (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag))
1124 #define SET_PREDICT_EXPR_OUTCOME(NODE, OUTCOME) \
1125 (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag = (int) OUTCOME)
1126 #define PREDICT_EXPR_PREDICTOR(NODE) \
1127 ((enum br_predictor)tree_low_cst (TREE_OPERAND (PREDICT_EXPR_CHECK (NODE), 0), 0))
1129 /* In a VAR_DECL, nonzero means allocate static storage.
1130 In a FUNCTION_DECL, nonzero if function has been defined.
1131 In a CONSTRUCTOR, nonzero means allocate static storage. */
1132 #define TREE_STATIC(NODE) ((NODE)->base.static_flag)
1134 /* In an ADDR_EXPR, nonzero means do not use a trampoline. */
1135 #define TREE_NO_TRAMPOLINE(NODE) (ADDR_EXPR_CHECK (NODE)->base.static_flag)
1137 /* In a TARGET_EXPR or WITH_CLEANUP_EXPR, means that the pertinent cleanup
1138 should only be executed if an exception is thrown, not on normal exit
1140 #define CLEANUP_EH_ONLY(NODE) ((NODE)->base.static_flag)
1142 /* In a TRY_CATCH_EXPR, means that the handler should be considered a
1143 separate cleanup in honor_protect_cleanup_actions. */
1144 #define TRY_CATCH_IS_CLEANUP(NODE) \
1145 (TRY_CATCH_EXPR_CHECK (NODE)->base.static_flag)
1147 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1148 CASE_HIGH operand has been processed. */
1149 #define CASE_HIGH_SEEN(NODE) \
1150 (CASE_LABEL_EXPR_CHECK (NODE)->base.static_flag)
1152 /* Used to mark a CALL_EXPR as not suitable for inlining. */
1153 #define CALL_CANNOT_INLINE_P(NODE) (CALL_EXPR_CHECK (NODE)->base.static_flag)
1155 /* In an expr node (usually a conversion) this means the node was made
1156 implicitly and should not lead to any sort of warning. In a decl node,
1157 warnings concerning the decl should be suppressed. This is used at
1158 least for used-before-set warnings, and it set after one warning is
1160 #define TREE_NO_WARNING(NODE) ((NODE)->base.nowarning_flag)
1162 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
1163 this string as an argument. */
1164 #define TREE_SYMBOL_REFERENCED(NODE) \
1165 (IDENTIFIER_NODE_CHECK (NODE)->base.static_flag)
1167 /* Nonzero in a pointer or reference type means the data pointed to
1168 by this type can alias anything. */
1169 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1170 (PTR_OR_REF_CHECK (NODE)->base.static_flag)
1172 /* In a MODIFY_EXPR, means that the store in the expression is nontemporal. */
1173 #define MOVE_NONTEMPORAL(NODE) \
1174 (EXPR_CHECK (NODE)->base.static_flag)
1176 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1177 there was an overflow in folding. */
1179 #define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->base.public_flag)
1181 /* TREE_OVERFLOW can only be true for EXPR of CONSTANT_CLASS_P. */
1183 #define TREE_OVERFLOW_P(EXPR) \
1184 (CONSTANT_CLASS_P (EXPR) && TREE_OVERFLOW (EXPR))
1186 /* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1187 nonzero means name is to be accessible from outside this translation unit.
1188 In an IDENTIFIER_NODE, nonzero means an external declaration
1189 accessible from outside this translation unit was previously seen
1190 for this name in an inner scope. */
1191 #define TREE_PUBLIC(NODE) ((NODE)->base.public_flag)
1193 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1194 of cached values, or is something else. */
1195 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->base.public_flag)
1197 /* In a SAVE_EXPR, indicates that the original expression has already
1198 been substituted with a VAR_DECL that contains the value. */
1199 #define SAVE_EXPR_RESOLVED_P(NODE) \
1200 (SAVE_EXPR_CHECK (NODE)->base.public_flag)
1202 /* Set on a CALL_EXPR if this stdarg call should be passed the argument
1204 #define CALL_EXPR_VA_ARG_PACK(NODE) \
1205 (CALL_EXPR_CHECK(NODE)->base.public_flag)
1207 /* In any expression, decl, or constant, nonzero means it has side effects or
1208 reevaluation of the whole expression could produce a different value.
1209 This is set if any subexpression is a function call, a side effect or a
1210 reference to a volatile variable. In a ..._DECL, this is set only if the
1211 declaration said `volatile'. This will never be set for a constant. */
1212 #define TREE_SIDE_EFFECTS(NODE) \
1213 (NON_TYPE_CHECK (NODE)->base.side_effects_flag)
1215 /* In a LABEL_DECL, nonzero means this label had its address taken
1216 and therefore can never be deleted and is a jump target for
1218 #define FORCED_LABEL(NODE) (LABEL_DECL_CHECK (NODE)->base.side_effects_flag)
1220 /* Nonzero means this expression is volatile in the C sense:
1221 its address should be of type `volatile WHATEVER *'.
1222 In other words, the declared item is volatile qualified.
1223 This is used in _DECL nodes and _REF nodes.
1224 On a FUNCTION_DECL node, this means the function does not
1225 return normally. This is the same effect as setting
1226 the attribute noreturn on the function in C.
1228 In a ..._TYPE node, means this type is volatile-qualified.
1229 But use TYPE_VOLATILE instead of this macro when the node is a type,
1230 because eventually we may make that a different bit.
1232 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1233 #define TREE_THIS_VOLATILE(NODE) ((NODE)->base.volatile_flag)
1235 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
1236 accessing the memory pointed to won't generate a trap. However,
1237 this only applies to an object when used appropriately: it doesn't
1238 mean that writing a READONLY mem won't trap. Similarly for
1239 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1241 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1242 (or slice of the array) always belongs to the range of the array.
1243 I.e. that the access will not trap, provided that the access to
1244 the base to the array will not trap. */
1245 #define TREE_THIS_NOTRAP(NODE) ((NODE)->base.nothrow_flag)
1247 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1248 nonzero means it may not be the lhs of an assignment.
1249 Nonzero in a FUNCTION_DECL means this function should be treated
1250 as "const" function (can only read its arguments). */
1251 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->base.readonly_flag)
1253 /* Value of expression is constant. Always on in all ..._CST nodes. May
1254 also appear in an expression or decl where the value is constant. */
1255 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->base.constant_flag)
1257 /* Nonzero if NODE, a type, has had its sizes gimplified. */
1258 #define TYPE_SIZES_GIMPLIFIED(NODE) \
1259 (TYPE_CHECK (NODE)->base.constant_flag)
1261 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1262 #define DECL_UNSIGNED(NODE) \
1263 (DECL_COMMON_CHECK (NODE)->base.unsigned_flag)
1265 /* In integral and pointer types, means an unsigned type. */
1266 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->base.unsigned_flag)
1268 /* Nonzero in a VAR_DECL or STRING_CST means assembler code has been written.
1269 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1270 This is interesting in an inline function, since it might not need
1271 to be compiled separately.
1272 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1273 if the sdb debugging info for the type has been written.
1274 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1275 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1277 #define TREE_ASM_WRITTEN(NODE) ((NODE)->base.asm_written_flag)
1279 /* Nonzero in a _DECL if the name is used in its scope.
1280 Nonzero in an expr node means inhibit warning if value is unused.
1281 In IDENTIFIER_NODEs, this means that some extern decl for this name
1283 In a BLOCK, this means that the block contains variables that are used. */
1284 #define TREE_USED(NODE) ((NODE)->base.used_flag)
1286 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1287 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1288 #define TREE_NOTHROW(NODE) ((NODE)->base.nothrow_flag)
1290 /* In a CALL_EXPR, means that it's safe to use the target of the call
1291 expansion as the return slot for a call that returns in memory. */
1292 #define CALL_EXPR_RETURN_SLOT_OPT(NODE) \
1293 (CALL_EXPR_CHECK (NODE)->base.private_flag)
1295 /* In a RESULT_DECL, PARM_DECL and VAR_DECL, means that it is
1296 passed by invisible reference (and the TREE_TYPE is a pointer to the true
1298 #define DECL_BY_REFERENCE(NODE) \
1299 (TREE_CHECK3 (NODE, VAR_DECL, PARM_DECL, \
1300 RESULT_DECL)->decl_common.decl_by_reference_flag)
1302 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
1303 thunked-to function. */
1304 #define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->base.protected_flag)
1306 /* In a type, nonzero means that all objects of the type are guaranteed by the
1307 language or front-end to be properly aligned, so we can indicate that a MEM
1308 of this type is aligned at least to the alignment of the type, even if it
1309 doesn't appear that it is. We see this, for example, in object-oriented
1310 languages where a tag field may show this is an object of a more-aligned
1311 variant of the more generic type.
1313 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1315 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->base.nothrow_flag)
1317 /* Used in classes in C++. */
1318 #define TREE_PRIVATE(NODE) ((NODE)->base.private_flag)
1319 /* Used in classes in C++. */
1320 #define TREE_PROTECTED(NODE) ((NODE)->base.protected_flag)
1322 /* Nonzero in a _DECL if the use of the name is defined as a
1323 deprecated feature by __attribute__((deprecated)). */
1324 #define TREE_DEPRECATED(NODE) \
1325 ((NODE)->base.deprecated_flag)
1327 /* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1328 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1329 #define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1330 (IDENTIFIER_NODE_CHECK (NODE)->base.deprecated_flag)
1332 /* In fixed-point types, means a saturating type. */
1333 #define TYPE_SATURATING(NODE) ((NODE)->base.saturating_flag)
1335 /* These flags are available for each language front end to use internally. */
1336 #define TREE_LANG_FLAG_0(NODE) ((NODE)->base.lang_flag_0)
1337 #define TREE_LANG_FLAG_1(NODE) ((NODE)->base.lang_flag_1)
1338 #define TREE_LANG_FLAG_2(NODE) ((NODE)->base.lang_flag_2)
1339 #define TREE_LANG_FLAG_3(NODE) ((NODE)->base.lang_flag_3)
1340 #define TREE_LANG_FLAG_4(NODE) ((NODE)->base.lang_flag_4)
1341 #define TREE_LANG_FLAG_5(NODE) ((NODE)->base.lang_flag_5)
1342 #define TREE_LANG_FLAG_6(NODE) ((NODE)->base.lang_flag_6)
1344 /* Define additional fields and accessors for nodes representing constants. */
1346 /* In an INTEGER_CST node. These two together make a 2-word integer.
1347 If the data type is signed, the value is sign-extended to 2 words
1348 even though not all of them may really be in use.
1349 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1350 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1351 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1352 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1354 #define INT_CST_LT(A, B) \
1355 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1356 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1357 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1359 #define INT_CST_LT_UNSIGNED(A, B) \
1360 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1361 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1362 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1363 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1364 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1366 struct GTY(()) tree_int_cst {
1367 struct tree_common common;
1371 /* In a REAL_CST node. struct real_value is an opaque entity, with
1372 manipulators defined in real.h. We don't want tree.h depending on
1373 real.h and transitively on tm.h. */
1376 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1377 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1379 struct GTY(()) tree_real_cst {
1380 struct tree_common common;
1381 struct real_value * real_cst_ptr;
1384 /* In a FIXED_CST node. */
1387 #define TREE_FIXED_CST_PTR(NODE) (FIXED_CST_CHECK (NODE)->fixed_cst.fixed_cst_ptr)
1388 #define TREE_FIXED_CST(NODE) (*TREE_FIXED_CST_PTR (NODE))
1390 struct GTY(()) tree_fixed_cst {
1391 struct tree_common common;
1392 struct fixed_value * fixed_cst_ptr;
1395 /* In a STRING_CST */
1396 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1397 #define TREE_STRING_POINTER(NODE) \
1398 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1400 struct GTY(()) tree_string {
1401 struct tree_common common;
1406 /* In a COMPLEX_CST node. */
1407 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1408 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1410 struct GTY(()) tree_complex {
1411 struct tree_common common;
1416 /* In a VECTOR_CST node. */
1417 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1419 struct GTY(()) tree_vector {
1420 struct tree_common common;
1426 /* Define fields and accessors for some special-purpose tree nodes. */
1428 #define IDENTIFIER_LENGTH(NODE) \
1429 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1430 #define IDENTIFIER_POINTER(NODE) \
1431 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1432 #define IDENTIFIER_HASH_VALUE(NODE) \
1433 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1435 /* Translate a hash table identifier pointer to a tree_identifier
1436 pointer, and vice versa. */
1438 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1439 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1440 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1442 struct GTY(()) tree_identifier {
1443 struct tree_common common;
1444 struct ht_identifier id;
1447 /* In a TREE_LIST node. */
1448 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1449 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1451 struct GTY(()) tree_list {
1452 struct tree_common common;
1457 /* In a TREE_VEC node. */
1458 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1459 #define TREE_VEC_END(NODE) \
1460 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1462 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1464 struct GTY(()) tree_vec {
1465 struct tree_common common;
1467 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1470 /* In a CONSTRUCTOR node. */
1471 #define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1472 #define CONSTRUCTOR_ELT(NODE,IDX) \
1473 (VEC_index (constructor_elt, CONSTRUCTOR_ELTS (NODE), IDX))
1474 #define CONSTRUCTOR_NELTS(NODE) (VEC_length (constructor_elt, CONSTRUCTOR_ELTS (NODE)))
1476 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1477 value of each element (stored within VAL). IX must be a scratch variable
1478 of unsigned integer type. */
1479 #define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1480 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1482 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1486 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1487 the value of each element (stored within VAL) and its index (stored
1488 within INDEX). IX must be a scratch variable of unsigned integer type. */
1489 #define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1490 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1492 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1493 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1497 /* Append a new constructor element to V, with the specified INDEX and VAL. */
1498 #define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1500 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1501 _ce___->index = INDEX; \
1502 _ce___->value = VALUE; \
1505 /* True if NODE, a FIELD_DECL, is to be processed as a bitfield for
1506 constructor output purposes. */
1507 #define CONSTRUCTOR_BITFIELD_P(NODE) \
1508 (DECL_BIT_FIELD (FIELD_DECL_CHECK (NODE)) && DECL_MODE (NODE) != BLKmode)
1510 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1511 element. INDEX can optionally design the position of VALUE: in arrays,
1512 it is the index where VALUE has to be placed; in structures, it is the
1513 FIELD_DECL of the member. */
1514 typedef struct GTY(()) constructor_elt_d {
1519 DEF_VEC_O(constructor_elt);
1520 DEF_VEC_ALLOC_O(constructor_elt,gc);
1522 struct GTY(()) tree_constructor {
1523 struct tree_common common;
1524 VEC(constructor_elt,gc) *elts;
1527 /* Define fields and accessors for some nodes that represent expressions. */
1529 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1530 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1531 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1532 && integer_zerop (TREE_OPERAND (NODE, 0)))
1534 /* In ordinary expression nodes. */
1535 #define TREE_OPERAND_LENGTH(NODE) tree_operand_length (NODE)
1536 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1538 /* In a tcc_vl_exp node, operand 0 is an INT_CST node holding the operand
1539 length. Its value includes the length operand itself; that is,
1540 the minimum valid length is 1.
1541 Note that we have to bypass the use of TREE_OPERAND to access
1542 that field to avoid infinite recursion in expanding the macros. */
1543 #define VL_EXP_OPERAND_LENGTH(NODE) \
1544 ((int)TREE_INT_CST_LOW (VL_EXP_CHECK (NODE)->exp.operands[0]))
1546 /* In a LOOP_EXPR node. */
1547 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1549 /* The source location of this expression. Non-tree_exp nodes such as
1550 decls and constants can be shared among multiple locations, so
1552 #define EXPR_LOCATION(NODE) (EXPR_P ((NODE)) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1553 #define SET_EXPR_LOCATION(NODE, LOCUS) EXPR_CHECK ((NODE))->exp.locus = (LOCUS)
1554 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1555 #define EXPR_LOCUS(NODE) (EXPR_P (NODE) \
1556 ? CONST_CAST (source_location *, &(NODE)->exp.locus) \
1557 : (source_location *) NULL)
1558 #define SET_EXPR_LOCUS(NODE, FROM) set_expr_locus ((NODE), (FROM))
1559 #define EXPR_FILENAME(NODE) LOCATION_FILE (EXPR_CHECK ((NODE))->exp.locus)
1560 #define EXPR_LINENO(NODE) LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1562 /* True if a tree is an expression or statement that can have a
1564 #define CAN_HAVE_LOCATION_P(NODE) (EXPR_P (NODE))
1566 extern void protected_set_expr_location (tree, location_t);
1568 /* In a TARGET_EXPR node. */
1569 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1570 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1571 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1573 /* DECL_EXPR accessor. This gives access to the DECL associated with
1574 the given declaration statement. */
1575 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1577 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1579 /* COMPOUND_LITERAL_EXPR accessors. */
1580 #define COMPOUND_LITERAL_EXPR_DECL_EXPR(NODE) \
1581 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
1582 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
1583 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_EXPR (NODE))
1585 /* SWITCH_EXPR accessors. These give access to the condition, body and
1586 original condition type (before any compiler conversions)
1587 of the switch statement, respectively. */
1588 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1589 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1590 #define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1592 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1593 of a case label, respectively. */
1594 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1595 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1596 #define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1598 /* The operands of a TARGET_MEM_REF. */
1599 #define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1600 #define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1601 #define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1602 #define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1603 #define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1604 #define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1606 /* The operands of a BIND_EXPR. */
1607 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1608 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1609 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1611 /* GOTO_EXPR accessor. This gives access to the label associated with
1612 a goto statement. */
1613 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1615 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1616 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1617 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1619 #define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1620 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1621 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1622 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1623 /* Nonzero if we want to create an ASM_INPUT instead of an
1624 ASM_OPERAND with no operands. */
1625 #define ASM_INPUT_P(NODE) (ASM_EXPR_CHECK (NODE)->base.static_flag)
1626 #define ASM_VOLATILE_P(NODE) (ASM_EXPR_CHECK (NODE)->base.public_flag)
1628 /* COND_EXPR accessors. */
1629 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1630 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1631 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1633 /* Accessors for the chains of recurrences. */
1634 #define CHREC_VAR(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 0)
1635 #define CHREC_LEFT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 1)
1636 #define CHREC_RIGHT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 2)
1637 #define CHREC_VARIABLE(NODE) TREE_INT_CST_LOW (CHREC_VAR (NODE))
1639 /* LABEL_EXPR accessor. This gives access to the label associated with
1640 the given label expression. */
1641 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1643 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1644 accessors for SSA operands. */
1646 /* CATCH_EXPR accessors. */
1647 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1648 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1650 /* EH_FILTER_EXPR accessors. */
1651 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1652 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1653 #define EH_FILTER_MUST_NOT_THROW(NODE) \
1654 (EH_FILTER_EXPR_CHECK (NODE)->base.static_flag)
1656 /* OBJ_TYPE_REF accessors. */
1657 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1658 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1659 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1661 /* ASSERT_EXPR accessors. */
1662 #define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1663 #define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1665 /* CALL_EXPR accessors.
1667 #define CALL_EXPR_FN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 1)
1668 #define CALL_EXPR_STATIC_CHAIN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 2)
1669 #define CALL_EXPR_ARGS(NODE) call_expr_arglist (NODE)
1670 #define CALL_EXPR_ARG(NODE, I) TREE_OPERAND (CALL_EXPR_CHECK (NODE), (I) + 3)
1671 #define call_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
1673 /* CALL_EXPR_ARGP returns a pointer to the argument vector for NODE.
1674 We can't use &CALL_EXPR_ARG (NODE, 0) because that will complain if
1675 the argument count is zero when checking is enabled. Instead, do
1676 the pointer arithmetic to advance past the 3 fixed operands in a
1677 CALL_EXPR. That produces a valid pointer to just past the end of the
1678 operand array, even if it's not valid to dereference it. */
1679 #define CALL_EXPR_ARGP(NODE) \
1680 (&(TREE_OPERAND (CALL_EXPR_CHECK (NODE), 0)) + 3)
1682 /* OpenMP directive and clause accessors. */
1684 #define OMP_BODY(NODE) \
1685 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1686 #define OMP_CLAUSES(NODE) \
1687 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1689 #define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1690 #define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1692 #define OMP_TASK_BODY(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 0)
1693 #define OMP_TASK_CLAUSES(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 1)
1695 #define OMP_TASKREG_CHECK(NODE) TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_TASK)
1696 #define OMP_TASKREG_BODY(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 0)
1697 #define OMP_TASKREG_CLAUSES(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 1)
1699 #define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1700 #define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1701 #define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1702 #define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1703 #define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1704 #define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1706 #define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1707 #define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1709 #define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1711 #define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1712 #define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1714 #define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1716 #define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1718 #define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1719 #define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1721 #define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1722 #define OMP_CLAUSE_DECL(NODE) \
1723 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1724 OMP_CLAUSE_PRIVATE, \
1725 OMP_CLAUSE_COPYPRIVATE), 0)
1727 /* True on an OMP_SECTION statement that was the last lexical member.
1728 This status is meaningful in the implementation of lastprivate. */
1729 #define OMP_SECTION_LAST(NODE) \
1730 (OMP_SECTION_CHECK (NODE)->base.private_flag)
1732 /* True on an OMP_PARALLEL statement if it represents an explicit
1733 combined parallel work-sharing constructs. */
1734 #define OMP_PARALLEL_COMBINED(NODE) \
1735 (OMP_PARALLEL_CHECK (NODE)->base.private_flag)
1737 /* True on a PRIVATE clause if its decl is kept around for debugging
1738 information only and its DECL_VALUE_EXPR is supposed to point
1739 to what it has been remapped to. */
1740 #define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1741 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE)->base.public_flag)
1743 /* True on a PRIVATE clause if ctor needs access to outer region's
1745 #define OMP_CLAUSE_PRIVATE_OUTER_REF(NODE) \
1746 TREE_PRIVATE (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1748 /* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1749 decl is present in the chain. */
1750 #define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1751 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE)->base.public_flag)
1752 #define OMP_CLAUSE_LASTPRIVATE_STMT(NODE) \
1753 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, \
1754 OMP_CLAUSE_LASTPRIVATE),\
1756 #define OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ(NODE) \
1757 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1759 #define OMP_CLAUSE_IF_EXPR(NODE) \
1760 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1761 #define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1762 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1763 #define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1764 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1766 #define OMP_CLAUSE_COLLAPSE_EXPR(NODE) \
1767 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 0)
1768 #define OMP_CLAUSE_COLLAPSE_ITERVAR(NODE) \
1769 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 1)
1770 #define OMP_CLAUSE_COLLAPSE_COUNT(NODE) \
1771 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 2)
1773 #define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1774 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1775 #define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1776 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1777 #define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1778 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1779 #define OMP_CLAUSE_REDUCTION_GIMPLE_INIT(NODE) \
1780 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1781 #define OMP_CLAUSE_REDUCTION_GIMPLE_MERGE(NODE) \
1782 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_merge
1783 #define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1784 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1786 enum omp_clause_schedule_kind
1788 OMP_CLAUSE_SCHEDULE_STATIC,
1789 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1790 OMP_CLAUSE_SCHEDULE_GUIDED,
1791 OMP_CLAUSE_SCHEDULE_AUTO,
1792 OMP_CLAUSE_SCHEDULE_RUNTIME
1795 #define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1796 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1798 enum omp_clause_default_kind
1800 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1801 OMP_CLAUSE_DEFAULT_SHARED,
1802 OMP_CLAUSE_DEFAULT_NONE,
1803 OMP_CLAUSE_DEFAULT_PRIVATE,
1804 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
1807 #define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1808 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1810 struct GTY(()) tree_exp {
1811 struct tree_common common;
1814 tree GTY ((special ("tree_exp"),
1815 desc ("TREE_CODE ((tree) &%0)")))
1819 /* SSA_NAME accessors. */
1821 /* Returns the variable being referenced. Once released, this is the
1822 only field that can be relied upon. */
1823 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1825 /* Returns the statement which defines this SSA name. */
1826 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->ssa_name.def_stmt
1828 /* Returns the SSA version number of this SSA name. Note that in
1829 tree SSA, version numbers are not per variable and may be recycled. */
1830 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1832 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1833 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1835 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1836 SSA_NAME_CHECK (NODE)->base.asm_written_flag
1838 /* Nonzero if this SSA_NAME expression is currently on the free list of
1839 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1840 has no meaning for an SSA_NAME. */
1841 #define SSA_NAME_IN_FREE_LIST(NODE) \
1842 SSA_NAME_CHECK (NODE)->base.nothrow_flag
1844 /* Nonzero if this SSA_NAME is the default definition for the
1845 underlying symbol. A default SSA name is created for symbol S if
1846 the very first reference to S in the function is a read operation.
1847 Default definitions are always created by an empty statement and
1848 belong to no basic block. */
1849 #define SSA_NAME_IS_DEFAULT_DEF(NODE) \
1850 SSA_NAME_CHECK (NODE)->base.default_def_flag
1852 /* Attributes for SSA_NAMEs for pointer-type variables. */
1853 #define SSA_NAME_PTR_INFO(N) \
1854 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1856 #ifndef _TREE_FLOW_H
1857 struct ptr_info_def;
1862 /* Immediate use linking structure. This structure is used for maintaining
1863 a doubly linked list of uses of an SSA_NAME. */
1864 typedef struct GTY(()) ssa_use_operand_d {
1865 struct ssa_use_operand_d* GTY((skip(""))) prev;
1866 struct ssa_use_operand_d* GTY((skip(""))) next;
1867 /* Immediate uses for a given SSA name are maintained as a cyclic
1868 list. To recognize the root of this list, the location field
1869 needs to point to the original SSA name. Since statements and
1870 SSA names are of different data types, we need this union. See
1871 the explanation in struct immediate_use_iterator_d. */
1872 union { gimple stmt; tree ssa_name; } GTY((skip(""))) loc;
1873 tree *GTY((skip(""))) use;
1874 } ssa_use_operand_t;
1876 /* Return the immediate_use information for an SSA_NAME. */
1877 #define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1879 struct GTY(()) tree_ssa_name {
1880 struct tree_common common;
1882 /* _DECL wrapped by this SSA name. */
1885 /* Statement that defines this SSA name. */
1888 /* SSA version number. */
1889 unsigned int version;
1891 /* Pointer attributes used for alias analysis. */
1892 struct ptr_info_def *ptr_info;
1894 /* Immediate uses list for this SSA_NAME. */
1895 struct ssa_use_operand_d imm_uses;
1898 struct GTY(()) phi_arg_d {
1899 /* imm_use MUST be the first element in struct because we do some
1900 pointer arithmetic with it. See phi_arg_index_from_use. */
1901 struct ssa_use_operand_d imm_use;
1906 #define OMP_CLAUSE_CODE(NODE) \
1907 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1909 #define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1910 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1912 #define OMP_CLAUSE_CODE(NODE) \
1913 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1915 #define OMP_CLAUSE_OPERAND(NODE, I) \
1916 OMP_CLAUSE_ELT_CHECK (NODE, I)
1918 struct GTY(()) tree_omp_clause {
1919 struct tree_common common;
1920 enum omp_clause_code code;
1921 union omp_clause_subcode {
1922 enum omp_clause_default_kind default_kind;
1923 enum omp_clause_schedule_kind schedule_kind;
1924 enum tree_code reduction_code;
1925 } GTY ((skip)) subcode;
1927 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1929 gimple_seq gimple_reduction_init;
1930 gimple_seq gimple_reduction_merge;
1932 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1936 struct varray_head_tag;
1938 /* In a BLOCK node. */
1939 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1940 #define BLOCK_NONLOCALIZED_VARS(NODE) (BLOCK_CHECK (NODE)->block.nonlocalized_vars)
1941 #define BLOCK_NUM_NONLOCALIZED_VARS(NODE) VEC_length (tree, BLOCK_NONLOCALIZED_VARS (NODE))
1942 #define BLOCK_NONLOCALIZED_VAR(NODE,N) VEC_index (tree, BLOCK_NONLOCALIZED_VARS (NODE), N)
1943 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1944 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1945 /* Note: when changing this, make sure to find the places
1946 that use chainon or nreverse. */
1947 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1948 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1949 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1951 /* An index number for this block. These values are not guaranteed to
1952 be unique across functions -- whether or not they are depends on
1953 the debugging output format in use. */
1954 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1956 /* If block reordering splits a lexical block into discontiguous
1957 address ranges, we'll make a copy of the original block.
1959 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1960 In that case, we have one source block that has been replicated
1961 (through inlining or unrolling) into many logical blocks, and that
1962 these logical blocks have different physical variables in them.
1964 In this case, we have one logical block split into several
1965 non-contiguous address ranges. Most debug formats can't actually
1966 represent this idea directly, so we fake it by creating multiple
1967 logical blocks with the same variables in them. However, for those
1968 that do support non-contiguous regions, these allow the original
1969 logical block to be reconstructed, along with the set of address
1972 One of the logical block fragments is arbitrarily chosen to be
1973 the ORIGIN. The other fragments will point to the origin via
1974 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1975 be null. The list of fragments will be chained through
1976 BLOCK_FRAGMENT_CHAIN from the origin. */
1978 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1979 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1981 /* For an inlined function, this gives the location where it was called
1982 from. This is only set in the top level block, which corresponds to the
1983 inlined function scope. This is used in the debug output routines. */
1985 #define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1987 struct GTY(()) tree_block {
1988 struct tree_common common;
1990 unsigned abstract_flag : 1;
1991 unsigned block_num : 31;
1996 VEC(tree,gc) *nonlocalized_vars;
2000 tree abstract_origin;
2001 tree fragment_origin;
2002 tree fragment_chain;
2005 /* Define fields and accessors for nodes representing data types. */
2007 /* See tree.def for documentation of the use of these fields.
2008 Look at the documentation of the various ..._TYPE tree codes.
2010 Note that the type.values, type.minval, and type.maxval fields are
2011 overloaded and used for different macros in different kinds of types.
2012 Each macro must check to ensure the tree node is of the proper kind of
2013 type. Note also that some of the front-ends also overload these fields,
2014 so they must be checked as well. */
2016 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
2017 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
2018 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
2019 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
2020 #define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
2021 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
2022 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
2023 #define TYPE_ORIG_SIZE_TYPE(NODE) \
2024 (INTEGER_TYPE_CHECK (NODE)->type.values \
2025 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
2026 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
2027 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
2028 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
2029 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
2030 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
2031 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
2032 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
2033 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
2034 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
2035 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
2036 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
2037 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
2038 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
2039 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
2040 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
2041 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
2042 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
2043 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
2044 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
2046 /* Vector types need to check target flags to determine type. */
2047 extern enum machine_mode vector_type_mode (const_tree);
2048 #define TYPE_MODE(NODE) \
2049 (TREE_CODE (TYPE_CHECK (NODE)) == VECTOR_TYPE \
2050 ? vector_type_mode (NODE) : (NODE)->type.mode)
2051 #define SET_TYPE_MODE(NODE, MODE) \
2052 (TYPE_CHECK (NODE)->type.mode = (MODE))
2054 /* The "canonical" type for this type node, which can be used to
2055 compare the type for equality with another type. If two types are
2056 equal (based on the semantics of the language), then they will have
2057 equivalent TYPE_CANONICAL entries.
2059 As a special case, if TYPE_CANONICAL is NULL_TREE, then it cannot
2060 be used for comparison against other types. Instead, the type is
2061 said to require structural equality checks, described in
2062 TYPE_STRUCTURAL_EQUALITY_P. */
2063 #define TYPE_CANONICAL(NODE) (TYPE_CHECK (NODE)->type.canonical)
2064 /* Indicates that the type node requires structural equality
2065 checks. The compiler will need to look at the composition of the
2066 type to determine whether it is equal to another type, rather than
2067 just comparing canonical type pointers. For instance, we would need
2068 to look at the return and parameter types of a FUNCTION_TYPE
2070 #define TYPE_STRUCTURAL_EQUALITY_P(NODE) (TYPE_CANONICAL (NODE) == NULL_TREE)
2071 /* Sets the TYPE_CANONICAL field to NULL_TREE, indicating that the
2072 type node requires structural equality. */
2073 #define SET_TYPE_STRUCTURAL_EQUALITY(NODE) (TYPE_CANONICAL (NODE) = NULL_TREE)
2074 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
2075 #define TYPE_IBIT(NODE) (GET_MODE_IBIT (TYPE_MODE (NODE)))
2076 #define TYPE_FBIT(NODE) (GET_MODE_FBIT (TYPE_MODE (NODE)))
2078 /* For a VECTOR_TYPE node, this describes a different type which is emitted
2079 in the debugging output. We use this to describe a vector as a
2080 structure containing an array. */
2081 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
2083 /* For record and union types, information about this type, as a base type
2085 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2087 /* For non record and union types, used in a language-dependent way. */
2088 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2090 /* The (language-specific) typed-based alias set for this type.
2091 Objects whose TYPE_ALIAS_SETs are different cannot alias each
2092 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
2093 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
2094 type can alias objects of any type. */
2095 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
2097 /* Nonzero iff the typed-based alias set for this type has been
2099 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
2101 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
2103 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
2105 /* The alignment necessary for objects of this type.
2106 The value is an int, measured in bits. */
2107 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
2109 /* 1 if the alignment for this type was requested by "aligned" attribute,
2110 0 if it is the default for this type. */
2111 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
2113 /* The alignment for NODE, in bytes. */
2114 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
2116 /* If your language allows you to declare types, and you want debug info
2117 for them, then you need to generate corresponding TYPE_DECL nodes.
2118 These "stub" TYPE_DECL nodes have no name, and simply point at the
2119 type node. You then set the TYPE_STUB_DECL field of the type node
2120 to point back at the TYPE_DECL node. This allows the debug routines
2121 to know that the two nodes represent the same type, so that we only
2122 get one debug info record for them. */
2123 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
2125 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
2126 has BLKmode only because it lacks the alignment requirement for
2128 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
2130 /* In an INTEGER_TYPE, it means the type represents a size. We use
2131 this both for validity checking and to permit optimizations that
2132 are unsafe for other types. Note that the C `size_t' type should
2133 *not* have this flag set. The `size_t' type is simply a typedef
2134 for an ordinary integer type that happens to be the type of an
2135 expression returned by `sizeof'; `size_t' has no special
2136 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
2137 always actual sizes. */
2138 #define TYPE_IS_SIZETYPE(NODE) \
2139 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
2141 /* Nonzero in a type considered volatile as a whole. */
2142 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->base.volatile_flag)
2144 /* Means this type is const-qualified. */
2145 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->base.readonly_flag)
2147 /* If nonzero, this type is `restrict'-qualified, in the C sense of
2149 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2151 /* There is a TYPE_QUAL value for each type qualifier. They can be
2152 combined by bitwise-or to form the complete set of qualifiers for a
2155 #define TYPE_UNQUALIFIED 0x0
2156 #define TYPE_QUAL_CONST 0x1
2157 #define TYPE_QUAL_VOLATILE 0x2
2158 #define TYPE_QUAL_RESTRICT 0x4
2160 /* The set of type qualifiers for this type. */
2161 #define TYPE_QUALS(NODE) \
2162 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2163 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2164 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2166 /* These flags are available for each language front end to use internally. */
2167 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2168 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2169 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2170 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2171 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2172 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2173 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2175 /* Used to keep track of visited nodes in tree traversals. This is set to
2176 0 by copy_node and make_node. */
2177 #define TREE_VISITED(NODE) ((NODE)->base.visited)
2179 /* If set in an ARRAY_TYPE, indicates a string type (for languages
2180 that distinguish string from array of char).
2181 If set in a INTEGER_TYPE, indicates a character type. */
2182 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2184 /* If non-NULL, this is an upper bound of the size (in bytes) of an
2185 object of the given ARRAY_TYPE. This allows temporaries to be
2187 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2188 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2190 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2191 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2192 (((unsigned HOST_WIDE_INT) 1) \
2193 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2195 /* Set precision to n when we have 2^n sub-parts of the vector. */
2196 #define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2197 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2199 /* Nonzero in a VECTOR_TYPE if the frontends should not emit warnings
2200 about missing conversions to other vector types of the same size. */
2201 #define TYPE_VECTOR_OPAQUE(NODE) \
2202 (VECTOR_TYPE_CHECK (NODE)->base.deprecated_flag)
2204 /* Indicates that objects of this type must be initialized by calling a
2205 function when they are created. */
2206 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
2207 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2209 /* Indicates that objects of this type (a UNION_TYPE), should be passed
2210 the same way that the first union alternative would be passed. */
2211 #define TYPE_TRANSPARENT_UNION(NODE) \
2212 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2214 /* For an ARRAY_TYPE, indicates that it is not permitted to take the
2215 address of a component of the type. This is the counterpart of
2216 DECL_NONADDRESSABLE_P for arrays, see the definition of this flag. */
2217 #define TYPE_NONALIASED_COMPONENT(NODE) \
2218 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2220 /* Indicated that objects of this type should be laid out in as
2221 compact a way as possible. */
2222 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
2224 /* Used by type_contains_placeholder_p to avoid recomputation.
2225 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2226 this field directly. */
2227 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2228 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2232 struct GTY(()) tree_type {
2233 struct tree_common common;
2240 unsigned int precision : 9;
2241 ENUM_BITFIELD(machine_mode) mode : 7;
2243 unsigned string_flag : 1;
2244 unsigned no_force_blk_flag : 1;
2245 unsigned needs_constructing_flag : 1;
2246 unsigned transparent_union_flag : 1;
2247 unsigned packed_flag : 1;
2248 unsigned restrict_flag : 1;
2249 unsigned contains_placeholder_bits : 2;
2251 unsigned lang_flag_0 : 1;
2252 unsigned lang_flag_1 : 1;
2253 unsigned lang_flag_2 : 1;
2254 unsigned lang_flag_3 : 1;
2255 unsigned lang_flag_4 : 1;
2256 unsigned lang_flag_5 : 1;
2257 unsigned lang_flag_6 : 1;
2258 unsigned user_align : 1;
2261 alias_set_type alias_set;
2264 union tree_type_symtab {
2265 int GTY ((tag ("0"))) address;
2266 const char * GTY ((tag ("1"))) pointer;
2267 struct die_struct * GTY ((tag ("2"))) die;
2268 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2269 descbits ("2"))) symtab;
2278 /* Points to a structure whose details depend on the language in use. */
2279 struct lang_type *lang_specific;
2282 /* Define accessor macros for information about type inheritance
2285 A "basetype" means a particular usage of a data type for inheritance
2286 in another type. Each such basetype usage has its own "binfo"
2287 object to describe it. The binfo object is a TREE_VEC node.
2289 Inheritance is represented by the binfo nodes allocated for a
2290 given type. For example, given types C and D, such that D is
2291 inherited by C, 3 binfo nodes will be allocated: one for describing
2292 the binfo properties of C, similarly one for D, and one for
2293 describing the binfo properties of D as a base type for C.
2294 Thus, given a pointer to class C, one can get a pointer to the binfo
2295 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2297 /* BINFO specific flags. */
2299 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
2300 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->base.static_flag)
2302 /* Flags for language dependent use. */
2303 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2304 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2305 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2306 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2307 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2308 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2309 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2311 /* The actual data type node being inherited in this basetype. */
2312 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2314 /* The offset where this basetype appears in its containing type.
2315 BINFO_OFFSET slot holds the offset (in bytes)
2316 from the base of the complete object to the base of the part of the
2317 object that is allocated on behalf of this `type'.
2318 This is always 0 except when there is multiple inheritance. */
2320 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2321 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2323 /* The virtual function table belonging to this basetype. Virtual
2324 function tables provide a mechanism for run-time method dispatching.
2325 The entries of a virtual function table are language-dependent. */
2327 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2329 /* The virtual functions in the virtual function table. This is
2330 a TREE_LIST that is used as an initial approximation for building
2331 a virtual function table for this basetype. */
2332 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2334 /* A vector of binfos for the direct basetypes inherited by this
2337 If this basetype describes type D as inherited in C, and if the
2338 basetypes of D are E and F, then this vector contains binfos for
2339 inheritance of E and F by C. */
2340 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2342 /* The number of basetypes for NODE. */
2343 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2345 /* Accessor macro to get to the Nth base binfo of this binfo. */
2346 #define BINFO_BASE_BINFO(NODE,N) \
2347 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2348 #define BINFO_BASE_ITERATE(NODE,N,B) \
2349 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2350 #define BINFO_BASE_APPEND(NODE,T) \
2351 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2353 /* For a BINFO record describing a virtual base class, i.e., one where
2354 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2355 base. The actual contents are language-dependent. In the C++
2356 front-end this field is an INTEGER_CST giving an offset into the
2357 vtable where the offset to the virtual base can be found. */
2358 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2360 /* Indicates the accesses this binfo has to its bases. The values are
2361 access_public_node, access_protected_node or access_private_node.
2362 If this array is not present, public access is implied. */
2363 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2365 #define BINFO_BASE_ACCESS(NODE,N) \
2366 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2367 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2368 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2370 /* The index in the VTT where this subobject's sub-VTT can be found.
2371 NULL_TREE if there is no sub-VTT. */
2372 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2374 /* The index in the VTT where the vptr for this subobject can be
2375 found. NULL_TREE if there is no secondary vptr in the VTT. */
2376 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2378 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2379 inheriting this base for non-virtual bases. For virtual bases it
2380 points either to the binfo for which this is a primary binfo, or to
2381 the binfo of the most derived type. */
2382 #define BINFO_INHERITANCE_CHAIN(NODE) \
2383 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2385 struct GTY (()) tree_binfo {
2386 struct tree_common common;
2392 VEC(tree,gc) *base_accesses;
2398 VEC(tree,none) base_binfos;
2402 /* Define fields and accessors for nodes representing declared names. */
2404 /* Nonzero if DECL represents a variable for the SSA passes. */
2405 #define SSA_VAR_P(DECL) \
2406 (TREE_CODE (DECL) == VAR_DECL \
2407 || TREE_CODE (DECL) == PARM_DECL \
2408 || TREE_CODE (DECL) == RESULT_DECL \
2409 || (TREE_CODE (DECL) == SSA_NAME \
2410 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2411 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2412 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
2417 /* Enumerate visibility settings. */
2418 #ifndef SYMBOL_VISIBILITY_DEFINED
2419 #define SYMBOL_VISIBILITY_DEFINED
2420 enum symbol_visibility
2423 VISIBILITY_PROTECTED,
2432 /* This is the name of the object as written by the user.
2433 It is an IDENTIFIER_NODE. */
2434 #define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2436 /* Every ..._DECL node gets a unique number. */
2437 #define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2439 /* These two fields describe where in the source code the declaration
2440 was. If the declaration appears in several places (as for a C
2441 function that is declared first and then defined later), this
2442 information should refer to the definition. */
2443 #define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2444 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2445 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2446 #define DECL_IS_BUILTIN(DECL) \
2447 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2449 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2450 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2451 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2452 points to either the FUNCTION_DECL for the containing function,
2453 the RECORD_TYPE or UNION_TYPE for the containing type, or
2454 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2456 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2457 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2458 struct GTY(()) tree_decl_minimal {
2459 struct tree_common common;
2467 /* For any sort of a ..._DECL node, this points to the original (abstract)
2468 decl node which this decl is an instance of, or else it is NULL indicating
2469 that this decl is not an instance of some other decl. For example,
2470 in a nested declaration of an inline function, this points back to the
2472 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2474 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2475 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2476 #define DECL_ORIGIN(NODE) \
2477 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2479 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2480 inline instance of some original (abstract) decl from an inline function;
2481 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2482 nodes can also have their abstract origin set to themselves. */
2483 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2484 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2486 /* In a DECL this is the field where attributes are stored. */
2487 #define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2489 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
2490 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2491 For a VAR_DECL, holds the initial value.
2492 For a PARM_DECL, used for DECL_ARG_TYPE--default
2493 values for parameters are encoded in the type of the function,
2494 not in the PARM_DECL slot.
2495 For a FIELD_DECL, this is used for enumeration values and the C
2496 frontend uses it for temporarily storing bitwidth of bitfields.
2498 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2499 #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2501 /* Holds the size of the datum, in bits, as a tree expression.
2502 Need not be constant. */
2503 #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2504 /* Likewise for the size in bytes. */
2505 #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2506 /* Holds the alignment required for the datum, in bits. */
2507 #define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.align)
2508 /* The alignment of NODE, in bytes. */
2509 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2510 /* Set if the alignment of this DECL has been set by the user, for
2511 example with an 'aligned' attribute. */
2512 #define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.user_align)
2513 /* Holds the machine mode corresponding to the declaration of a variable or
2514 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2516 #define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2518 /* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2519 operation it is. Note, however, that this field is overloaded, with
2520 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2521 checked before any access to the former. */
2522 #define DECL_FUNCTION_CODE(NODE) \
2523 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_code)
2524 #define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2525 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2527 /* Nonzero for a given ..._DECL node means that the name of this node should
2528 be ignored for symbolic debug purposes. */
2529 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2531 /* Nonzero for a given ..._DECL node means that this node represents an
2532 "abstract instance" of the given declaration (e.g. in the original
2533 declaration of an inline function). When generating symbolic debugging
2534 information, we mustn't try to generate any address information for nodes
2535 marked as "abstract instances" because we don't actually generate
2536 any code or allocate any data space for such instances. */
2537 #define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2539 /* Language-specific decl information. */
2540 #define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2542 /* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2543 do not allocate storage, and refer to a definition elsewhere. Note that
2544 this does not necessarily imply the entity represented by NODE
2545 has no program source-level definition in this translation unit. For
2546 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2547 DECL_EXTERNAL may be true simultaneously; that can be the case for
2548 a C99 "extern inline" function. */
2549 #define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_2)
2551 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2552 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2554 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2556 Also set in some languages for variables, etc., outside the normal
2557 lexical scope, such as class instance variables. */
2558 #define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2560 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2561 Used in FIELD_DECLs for vtable pointers.
2562 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2563 #define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2565 /* Used to indicate that this DECL represents a compiler-generated entity. */
2566 #define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2568 /* Additional flags for language-specific uses. */
2569 #define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2570 #define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2571 #define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2572 #define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2573 #define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2574 #define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2575 #define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2576 #define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2578 /* Used to indicate an alias set for the memory pointed to by this
2579 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2580 pointer (or reference) type. */
2581 #define DECL_POINTER_ALIAS_SET(NODE) \
2582 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2584 /* Nonzero if an alias set has been assigned to this declaration. */
2585 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2586 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2588 /* Nonzero for a decl which is at file scope. */
2589 #define DECL_FILE_SCOPE_P(EXP) \
2590 (! DECL_CONTEXT (EXP) \
2591 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2593 /* Nonzero for a decl that is decorated using attribute used.
2594 This indicates compiler tools that this decl needs to be preserved. */
2595 #define DECL_PRESERVE_P(DECL) \
2596 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2598 /* For function local variables of COMPLEX and VECTOR types,
2599 indicates that the variable is not aliased, and that all
2600 modifications to the variable have been adjusted so that
2601 they are killing assignments. Thus the variable may now
2602 be treated as a GIMPLE register, and use real instead of
2603 virtual ops in SSA form. */
2604 #define DECL_GIMPLE_REG_P(DECL) \
2605 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2607 struct GTY(()) tree_decl_common {
2608 struct tree_decl_minimal common;
2611 ENUM_BITFIELD(machine_mode) mode : 8;
2613 unsigned nonlocal_flag : 1;
2614 unsigned virtual_flag : 1;
2615 unsigned ignored_flag : 1;
2616 unsigned abstract_flag : 1;
2617 unsigned artificial_flag : 1;
2618 unsigned user_align : 1;
2619 unsigned preserve_flag: 1;
2620 unsigned debug_expr_is_from : 1;
2622 unsigned lang_flag_0 : 1;
2623 unsigned lang_flag_1 : 1;
2624 unsigned lang_flag_2 : 1;
2625 unsigned lang_flag_3 : 1;
2626 unsigned lang_flag_4 : 1;
2627 unsigned lang_flag_5 : 1;
2628 unsigned lang_flag_6 : 1;
2629 unsigned lang_flag_7 : 1;
2631 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2632 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2633 unsigned decl_flag_0 : 1;
2634 /* In FIELD_DECL, this is DECL_PACKED. */
2635 unsigned decl_flag_1 : 1;
2636 /* In FIELD_DECL, this is DECL_BIT_FIELD
2637 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2638 In TYPE_DECL, this is TYPE_DECL_SUPRESS_DEBUG. */
2639 unsigned decl_flag_2 : 1;
2640 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2641 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR. */
2642 unsigned decl_flag_3 : 1;
2643 /* Logically, these two would go in a theoretical base shared by var and
2645 unsigned gimple_reg_flag : 1;
2646 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
2647 unsigned decl_by_reference_flag : 1;
2648 /* Padding so that 'off_align' can be on a 32-bit boundary. */
2649 unsigned decl_common_unused : 2;
2651 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
2652 unsigned int off_align : 8;
2657 tree abstract_origin;
2659 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
2662 alias_set_type pointer_alias_set;
2663 /* Points to a structure whose details depend on the language in use. */
2664 struct lang_decl *lang_specific;
2667 extern tree decl_value_expr_lookup (tree);
2668 extern void decl_value_expr_insert (tree, tree);
2670 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2671 if transformations have made this more complicated than evaluating the
2672 decl itself. This should only be used for debugging; once this field has
2673 been set, the decl itself may not legitimately appear in the function. */
2674 #define DECL_HAS_VALUE_EXPR_P(NODE) \
2675 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_3)
2676 #define DECL_VALUE_EXPR(NODE) \
2677 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2678 #define SET_DECL_VALUE_EXPR(NODE, VAL) \
2679 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2681 /* Holds the RTL expression for the value of a variable or function.
2682 This value can be evaluated lazily for functions, variables with
2683 static storage duration, and labels. */
2684 #define DECL_RTL(NODE) \
2685 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2686 ? (NODE)->decl_with_rtl.rtl \
2687 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2689 /* Set the DECL_RTL for NODE to RTL. */
2690 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2692 /* Returns nonzero if NODE is a tree node that can contain RTL. */
2693 #define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2695 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
2696 #define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2698 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2699 NODE1, it will not be set for NODE2; this is a lazy copy. */
2700 #define COPY_DECL_RTL(NODE1, NODE2) \
2701 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2703 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2704 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2706 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2707 #define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2709 struct GTY(()) tree_decl_with_rtl {
2710 struct tree_decl_common common;
2714 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
2715 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2716 of the structure. */
2717 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2719 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2720 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2721 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2722 natural alignment of the field's type). */
2723 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2725 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
2726 if so, the type that was originally specified for it.
2727 TREE_TYPE may have been modified (in finish_struct). */
2728 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2730 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2731 if nonzero, indicates that the field occupies the type. */
2732 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2734 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2735 DECL_FIELD_OFFSET which are known to be always zero.
2736 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2738 #define DECL_OFFSET_ALIGN(NODE) \
2739 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.off_align)
2741 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2742 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
2743 (FIELD_DECL_CHECK (NODE)->decl_common.off_align = exact_log2 ((X) & -(X)))
2744 /* 1 if the alignment for this type was requested by "aligned" attribute,
2745 0 if it is the default for this type. */
2747 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2748 which this FIELD_DECL is defined. This information is needed when
2749 writing debugging information about vfield and vbase decls for C++. */
2750 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2752 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2753 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2755 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2757 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2759 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2760 this component. This makes it possible for Type-Based Alias Analysis
2761 to disambiguate accesses to this field with indirect accesses using
2764 struct S { int i; } s;
2767 If the flag is set on 'i', TBAA computes that s.i and *p never conflict.
2769 From the implementation's viewpoint, the alias set of the type of the
2770 field 'i' (int) will not be recorded as a subset of that of the type of
2771 's' (struct S) in record_component_aliases. The counterpart is that
2772 accesses to s.i must not be given the alias set of the type of 'i'
2773 (int) but instead directly that of the type of 's' (struct S). */
2774 #define DECL_NONADDRESSABLE_P(NODE) \
2775 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_3)
2777 struct GTY(()) tree_field_decl {
2778 struct tree_decl_common common;
2781 tree bit_field_type;
2788 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2789 dense, unique within any one function, and may be used to index arrays.
2790 If the value is -1, then no UID has been assigned. */
2791 #define LABEL_DECL_UID(NODE) \
2792 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2794 /* In LABEL_DECL nodes, nonzero means that an error message about
2795 jumping into such a binding contour has been printed for this label. */
2796 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2798 struct GTY(()) tree_label_decl {
2799 struct tree_decl_with_rtl common;
2802 struct GTY(()) tree_result_decl {
2803 struct tree_decl_with_rtl common;
2806 struct GTY(()) tree_const_decl {
2807 struct tree_decl_with_rtl common;
2810 /* For a PARM_DECL, records the data type used to pass the argument,
2811 which may be different from the type seen in the program. */
2812 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2814 /* For PARM_DECL, holds an RTL for the stack slot or register
2815 where the data was actually passed. */
2816 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2818 struct GTY(()) tree_parm_decl {
2819 struct tree_decl_with_rtl common;
2824 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2825 this variable in a BIND_EXPR. */
2826 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2827 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2829 /* Used to indicate that the linkage status of this DECL is not yet known,
2830 so it should not be output now. */
2831 #define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2833 /* Nonzero for a given ..._DECL node means that no warnings should be
2834 generated just because this node is unused. */
2835 #define DECL_IN_SYSTEM_HEADER(NODE) \
2836 (in_system_header_at (DECL_SOURCE_LOCATION (NODE)))
2838 /* Used to indicate that this DECL has weak linkage. */
2839 #define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2841 /* Used to indicate that the DECL is a dllimport. */
2842 #define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2844 /* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2845 based on a variable with a restrict qualified type. If it is,
2846 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2849 #define DECL_BASED_ON_RESTRICT_P(NODE) \
2850 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2851 #define DECL_GET_RESTRICT_BASE(NODE) \
2852 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2853 #define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2854 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2856 extern tree decl_restrict_base_lookup (tree);
2857 extern void decl_restrict_base_insert (tree, tree);
2859 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2860 not be put out unless it is needed in this translation unit.
2861 Entities like this are shared across translation units (like weak
2862 entities), but are guaranteed to be generated by any translation
2863 unit that needs them, and therefore need not be put out anywhere
2864 where they are not needed. DECL_COMDAT is just a hint to the
2865 back-end; it is up to front-ends which set this flag to ensure
2866 that there will never be any harm, other than bloat, in putting out
2867 something which is DECL_COMDAT. */
2868 #define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2870 /* A replaceable function is one which may be replaced at link-time
2871 with an entirely different definition, provided that the
2872 replacement has the same type. For example, functions declared
2873 with __attribute__((weak)) on most systems are replaceable.
2875 COMDAT functions are not replaceable, since all definitions of the
2876 function must be equivalent. It is important that COMDAT functions
2877 not be treated as replaceable so that use of C++ template
2878 instantiations is not penalized.
2880 For example, DECL_REPLACEABLE is used to determine whether or not a
2881 function (including a template instantiation) which is not
2882 explicitly declared "inline" can be inlined. If the function is
2883 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2884 implementation chosen at link-time may be different. However, a
2885 function that is not DECL_REPLACEABLE can be inlined, since all
2886 versions of the function will be functionally identical. */
2887 #define DECL_REPLACEABLE_P(NODE) \
2888 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2890 /* The name of the object as the assembler will see it (but before any
2891 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2892 as DECL_NAME. It is an IDENTIFIER_NODE. */
2893 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2895 /* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2896 This is true of all DECL nodes except FIELD_DECL. */
2897 #define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2898 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2900 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2901 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2903 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2904 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2906 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2907 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2908 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2910 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2911 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2912 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2913 semantics of using this macro, are different than saying:
2915 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2917 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2919 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2920 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2921 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2922 DECL_ASSEMBLER_NAME (DECL1)) \
2925 /* Records the section name in a section attribute. Used to pass
2926 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2927 #define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2929 /* Value of the decls's visibility attribute */
2930 #define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2932 /* Nonzero means that the decl had its visibility specified rather than
2934 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2936 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2937 multiple translation units should be merged. */
2938 #define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2940 struct GTY(()) tree_decl_with_vis {
2941 struct tree_decl_with_rtl common;
2942 tree assembler_name;
2945 /* Belong to VAR_DECL exclusively. */
2946 unsigned defer_output:1;
2947 unsigned hard_register:1;
2948 unsigned thread_local:1;
2949 unsigned common_flag:1;
2950 unsigned in_text_section : 1;
2951 unsigned dllimport_flag : 1;
2952 unsigned based_on_restrict_p : 1;
2953 /* Used by C++. Might become a generic decl flag. */
2954 unsigned shadowed_for_var_p : 1;
2956 /* Don't belong to VAR_DECL exclusively. */
2957 unsigned weak_flag:1;
2958 unsigned seen_in_bind_expr : 1;
2959 unsigned comdat_flag : 1;
2960 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2961 unsigned visibility_specified : 1;
2962 /* Belong to FUNCTION_DECL exclusively. */
2963 unsigned one_only : 1;
2964 unsigned init_priority_p:1;
2966 /* Belongs to VAR_DECL exclusively. */
2967 ENUM_BITFIELD(tls_model) tls_model : 3;
2968 /* 13 unused bits. */
2971 /* In a VAR_DECL that's static,
2972 nonzero if the space is in the text section. */
2973 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2975 /* Nonzero for a given ..._DECL node means that this node should be
2976 put in .common, if possible. If a DECL_INITIAL is given, and it
2977 is not error_mark_node, then the decl cannot be put in .common. */
2978 #define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2980 /* In a VAR_DECL, nonzero if the decl is a register variable with
2981 an explicit asm specification. */
2982 #define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2984 extern tree decl_debug_expr_lookup (tree);
2985 extern void decl_debug_expr_insert (tree, tree);
2986 /* For VAR_DECL, this is set to either an expression that it was split
2987 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2988 subexpressions that it was split into. */
2989 #define DECL_DEBUG_EXPR(NODE) \
2990 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2992 #define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2993 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2995 /* An initialization priority. */
2996 typedef unsigned short priority_type;
2998 extern priority_type decl_init_priority_lookup (tree);
2999 extern priority_type decl_fini_priority_lookup (tree);
3000 extern void decl_init_priority_insert (tree, priority_type);
3001 extern void decl_fini_priority_insert (tree, priority_type);
3003 /* In a non-local VAR_DECL with static storage duration, true if the
3004 variable has an initialization priority. If false, the variable
3005 will be initialized at the DEFAULT_INIT_PRIORITY. */
3006 #define DECL_HAS_INIT_PRIORITY_P(NODE) \
3007 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
3009 /* For a VAR_DECL or FUNCTION_DECL the initialization priority of
3011 #define DECL_INIT_PRIORITY(NODE) \
3012 (decl_init_priority_lookup (NODE))
3013 /* Set the initialization priority for NODE to VAL. */
3014 #define SET_DECL_INIT_PRIORITY(NODE, VAL) \
3015 (decl_init_priority_insert (NODE, VAL))
3017 /* For a FUNCTION_DECL the finalization priority of NODE. */
3018 #define DECL_FINI_PRIORITY(NODE) \
3019 (decl_fini_priority_lookup (NODE))
3020 /* Set the finalization priority for NODE to VAL. */
3021 #define SET_DECL_FINI_PRIORITY(NODE, VAL) \
3022 (decl_fini_priority_insert (NODE, VAL))
3024 /* The initialization priority for entities for which no explicit
3025 initialization priority has been specified. */
3026 #define DEFAULT_INIT_PRIORITY 65535
3028 /* The maximum allowed initialization priority. */
3029 #define MAX_INIT_PRIORITY 65535
3031 /* The largest priority value reserved for use by system runtime
3033 #define MAX_RESERVED_INIT_PRIORITY 100
3035 /* In a VAR_DECL, the model to use if the data should be allocated from
3036 thread-local storage. */
3037 #define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
3039 /* In a VAR_DECL, nonzero if the data should be allocated from
3040 thread-local storage. */
3041 #define DECL_THREAD_LOCAL_P(NODE) \
3042 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model >= TLS_MODEL_REAL)
3044 struct GTY(()) tree_var_decl {
3045 struct tree_decl_with_vis common;
3049 /* This field is used to reference anything in decl.result and is meant only
3050 for use by the garbage collector. */
3051 #define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
3053 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
3054 Before the struct containing the FUNCTION_DECL is laid out,
3055 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
3056 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
3057 function. When the class is laid out, this pointer is changed
3058 to an INTEGER_CST node which is suitable for use as an index
3059 into the virtual function table.
3060 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
3061 #define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
3064 tree_decl_non_common {
3065 struct tree_decl_with_vis common;
3066 /* C++ uses this in namespaces. */
3068 /* C++ uses this in templates. */
3070 /* Almost all FE's use this. */
3072 /* C++ uses this in namespaces. */
3076 /* In FUNCTION_DECL, holds the decl for the return value. */
3077 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
3079 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
3080 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
3082 /* In a FUNCTION_DECL, the saved representation of the body of the
3084 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3086 /* Nonzero in a FUNCTION_DECL means this function should be treated
3087 as if it were a malloc, meaning it returns a pointer that is
3089 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3091 /* Nonzero in a FUNCTION_DECL means this function should be treated as
3092 C++ operator new, meaning that it returns a pointer for which we
3093 should not use type based aliasing. */
3094 #define DECL_IS_OPERATOR_NEW(NODE) \
3095 (FUNCTION_DECL_CHECK (NODE)->function_decl.operator_new_flag)
3097 /* Nonzero in a FUNCTION_DECL means this function may return more
3099 #define DECL_IS_RETURNS_TWICE(NODE) \
3100 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3102 /* Nonzero in a FUNCTION_DECL means this function should be treated
3103 as "pure" function (like const function, but may read global memory). */
3104 #define DECL_PURE_P(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3106 /* Nonzero only if one of TREE_READONLY or DECL_PURE_P is nonzero AND
3107 the const or pure function may not terminate. When this is nonzero
3108 for a const or pure function, it can be dealt with by cse passes
3109 but cannot be removed by dce passes since you are not allowed to
3110 change an infinite looping program into one that terminates without
3112 #define DECL_LOOPING_CONST_OR_PURE_P(NODE) \
3113 (FUNCTION_DECL_CHECK (NODE)->function_decl.looping_const_or_pure_flag)
3115 /* Nonzero in a FUNCTION_DECL means this function should be treated
3116 as "novops" function (function that does not read global memory,
3117 but may have arbitrary side effects). */
3118 #define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3120 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
3121 at the beginning or end of execution. */
3122 #define DECL_STATIC_CONSTRUCTOR(NODE) \
3123 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3125 #define DECL_STATIC_DESTRUCTOR(NODE) \
3126 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3128 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
3129 be instrumented with calls to support routines. */
3130 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3131 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3133 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3134 disabled in this function. */
3135 #define DECL_NO_LIMIT_STACK(NODE) \
3136 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3138 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3139 static chain is not needed. */
3140 #define DECL_NO_STATIC_CHAIN(NODE) \
3141 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3143 /* Nonzero for a decl that cgraph has decided should be inlined into
3144 at least one call site. It is not meaningful to look at this
3145 directly; always use cgraph_function_possibly_inlined_p. */
3146 #define DECL_POSSIBLY_INLINED(DECL) \
3147 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3149 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3150 such as via the `inline' keyword in C/C++. This flag controls the linkage
3151 semantics of 'inline' */
3152 #define DECL_DECLARED_INLINE_P(NODE) \
3153 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3155 /* Nonzero in a FUNCTION_DECL means this function should not get
3156 -Winline warnings. */
3157 #define DECL_NO_INLINE_WARNING_P(NODE) \
3158 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_inline_warning_flag)
3160 /* Nonzero in a FUNCTION_DECL that should be always inlined by the inliner
3161 disregarding size and cost heuristics. This is equivalent to using
3162 the always_inline attribute without the required diagnostics if the
3163 function cannot be inlined. */
3164 #define DECL_DISREGARD_INLINE_LIMITS(NODE) \
3165 (FUNCTION_DECL_CHECK (NODE)->function_decl.disregard_inline_limits)
3167 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3168 that describes the status of this function. */
3169 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3171 /* In a FUNCTION_DECL, nonzero means a built in function. */
3172 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3174 /* For a builtin function, identify which part of the compiler defined it. */
3175 #define DECL_BUILT_IN_CLASS(NODE) \
3176 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3178 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
3179 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3181 #define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3182 #define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3184 /* In FUNCTION_DECL, the function specific target options to use when compiling
3186 #define DECL_FUNCTION_SPECIFIC_TARGET(NODE) \
3187 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_target)
3189 /* In FUNCTION_DECL, the function specific optimization options to use when
3190 compiling this function. */
3191 #define DECL_FUNCTION_SPECIFIC_OPTIMIZATION(NODE) \
3192 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_optimization)
3194 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3195 arguments/result/saved_tree fields by front ends. It was either inherit
3196 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3197 which seemed a bit strange. */
3199 struct GTY(()) tree_function_decl {
3200 struct tree_decl_non_common common;
3204 /* Function specific options that are used by this function. */
3205 tree function_specific_target; /* target options */
3206 tree function_specific_optimization; /* optimization options */
3208 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
3209 DECL_FUNCTION_CODE. Otherwise unused.
3210 ??? The bitfield needs to be able to hold all target function
3212 ENUM_BITFIELD(built_in_function) function_code : 11;
3213 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3215 unsigned static_ctor_flag : 1;
3216 unsigned static_dtor_flag : 1;
3217 unsigned uninlinable : 1;
3219 unsigned possibly_inlined : 1;
3220 unsigned novops_flag : 1;
3221 unsigned returns_twice_flag : 1;
3222 unsigned malloc_flag : 1;
3223 unsigned operator_new_flag : 1;
3224 unsigned declared_inline_flag : 1;
3225 unsigned regdecl_flag : 1;
3227 unsigned no_inline_warning_flag : 1;
3228 unsigned no_instrument_function_entry_exit : 1;
3229 unsigned no_limit_stack : 1;
3230 unsigned disregard_inline_limits : 1;
3231 unsigned pure_flag : 1;
3232 unsigned looping_const_or_pure_flag : 1;
3238 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3239 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3241 /* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3242 into stabs. Instead it will generate cross reference ('x') of names.
3243 This uses the same flag as DECL_EXTERNAL. */
3244 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3245 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_2)
3247 /* Getter of the imported declaration associated to the
3248 IMPORTED_DECL node. */
3249 #define IMPORTED_DECL_ASSOCIATED_DECL(NODE) \
3250 (DECL_INITIAL (IMPORTED_DECL_CHECK (NODE)))
3252 struct GTY(()) tree_type_decl {
3253 struct tree_decl_non_common common;
3257 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3258 To reduce overhead, the nodes containing the statements are not trees.
3259 This avoids the overhead of tree_common on all linked list elements.
3261 Use the interface in tree-iterator.h to access this node. */
3263 #define STATEMENT_LIST_HEAD(NODE) \
3264 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3265 #define STATEMENT_LIST_TAIL(NODE) \
3266 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3268 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
3270 struct tree_statement_list_node *prev;
3271 struct tree_statement_list_node *next;
3275 struct GTY(()) tree_statement_list
3277 struct tree_common common;
3278 struct tree_statement_list_node *head;
3279 struct tree_statement_list_node *tail;
3283 /* Optimization options used by a function. */
3285 struct GTY(()) tree_optimization_option {
3286 struct tree_common common;
3288 /* The optimization options used by the user. */
3289 struct cl_optimization opts;
3292 #define TREE_OPTIMIZATION(NODE) \
3293 (&OPTIMIZATION_NODE_CHECK (NODE)->optimization.opts)
3295 /* Return a tree node that encapsulates the current optimization options. */
3296 extern tree build_optimization_node (void);
3298 /* Target options used by a function. */
3300 struct GTY(()) tree_target_option {
3301 struct tree_common common;
3303 /* The optimization options used by the user. */
3304 struct cl_target_option opts;
3307 #define TREE_TARGET_OPTION(NODE) \
3308 (&TARGET_OPTION_NODE_CHECK (NODE)->target_option.opts)
3310 /* Return a tree node that encapsulates the current target options. */
3311 extern tree build_target_option_node (void);
3314 /* Define the overall contents of a tree node.
3315 It may be any of the structures declared above
3316 for various types of node. */
3318 union GTY ((ptr_alias (union lang_tree_node),
3319 desc ("tree_node_structure (&%h)"))) tree_node {
3320 struct tree_base GTY ((tag ("TS_BASE"))) base;
3321 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3322 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3323 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3324 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
3325 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3326 struct tree_string GTY ((tag ("TS_STRING"))) string;
3327 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3328 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3329 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3330 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3331 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3332 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3333 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3334 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3335 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3336 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3337 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3338 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3339 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3340 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3341 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3342 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3343 struct tree_list GTY ((tag ("TS_LIST"))) list;
3344 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3345 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3346 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3347 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3348 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3349 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3350 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3351 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3352 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
3353 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
3356 /* Standard named or nameless data types of the C compiler. */
3378 TI_INTEGER_MINUS_ONE,
3395 TI_COMPLEX_INTEGER_TYPE,
3396 TI_COMPLEX_FLOAT_TYPE,
3397 TI_COMPLEX_DOUBLE_TYPE,
3398 TI_COMPLEX_LONG_DOUBLE_TYPE,
3402 TI_LONG_DOUBLE_TYPE,
3406 TI_LONG_DOUBLE_PTR_TYPE,
3407 TI_INTEGER_PTR_TYPE,
3416 TI_VA_LIST_GPR_COUNTER_FIELD,
3417 TI_VA_LIST_FPR_COUNTER_FIELD,
3424 TI_DFLOAT32_PTR_TYPE,
3425 TI_DFLOAT64_PTR_TYPE,
3426 TI_DFLOAT128_PTR_TYPE,
3435 TI_SAT_LLFRACT_TYPE,
3436 TI_SAT_USFRACT_TYPE,
3438 TI_SAT_ULFRACT_TYPE,
3439 TI_SAT_ULLFRACT_TYPE,
3451 TI_SAT_LLACCUM_TYPE,
3452 TI_SAT_USACCUM_TYPE,
3454 TI_SAT_ULACCUM_TYPE,
3455 TI_SAT_ULLACCUM_TYPE,
3501 TI_OPTIMIZATION_DEFAULT,
3502 TI_OPTIMIZATION_CURRENT,
3503 TI_TARGET_OPTION_DEFAULT,
3504 TI_TARGET_OPTION_CURRENT,
3505 TI_CURRENT_TARGET_PRAGMA,
3506 TI_CURRENT_OPTIMIZE_PRAGMA,
3511 extern GTY(()) tree global_trees[TI_MAX];
3513 #define error_mark_node global_trees[TI_ERROR_MARK]
3515 #define intQI_type_node global_trees[TI_INTQI_TYPE]
3516 #define intHI_type_node global_trees[TI_INTHI_TYPE]
3517 #define intSI_type_node global_trees[TI_INTSI_TYPE]
3518 #define intDI_type_node global_trees[TI_INTDI_TYPE]
3519 #define intTI_type_node global_trees[TI_INTTI_TYPE]
3521 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3522 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3523 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3524 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3525 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3527 #define uint32_type_node global_trees[TI_UINT32_TYPE]
3528 #define uint64_type_node global_trees[TI_UINT64_TYPE]
3530 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
3531 #define integer_one_node global_trees[TI_INTEGER_ONE]
3532 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3533 #define size_zero_node global_trees[TI_SIZE_ZERO]
3534 #define size_one_node global_trees[TI_SIZE_ONE]
3535 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3536 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3537 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3539 /* Base access nodes. */
3540 #define access_public_node global_trees[TI_PUBLIC]
3541 #define access_protected_node global_trees[TI_PROTECTED]
3542 #define access_private_node global_trees[TI_PRIVATE]
3544 #define null_pointer_node global_trees[TI_NULL_POINTER]
3546 #define float_type_node global_trees[TI_FLOAT_TYPE]
3547 #define double_type_node global_trees[TI_DOUBLE_TYPE]
3548 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3550 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3551 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3552 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3553 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3555 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3556 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3557 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3558 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3560 #define void_type_node global_trees[TI_VOID_TYPE]
3561 /* The C type `void *'. */
3562 #define ptr_type_node global_trees[TI_PTR_TYPE]
3563 /* The C type `const void *'. */
3564 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3565 /* The C type `size_t'. */
3566 #define size_type_node global_trees[TI_SIZE_TYPE]
3567 #define pid_type_node global_trees[TI_PID_TYPE]
3568 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3569 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3570 #define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3571 #define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3572 /* The C type `FILE *'. */
3573 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3575 #define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
3576 #define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
3577 #define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
3579 /* The decimal floating point types. */
3580 #define dfloat32_type_node global_trees[TI_DFLOAT32_TYPE]
3581 #define dfloat64_type_node global_trees[TI_DFLOAT64_TYPE]
3582 #define dfloat128_type_node global_trees[TI_DFLOAT128_TYPE]
3583 #define dfloat32_ptr_type_node global_trees[TI_DFLOAT32_PTR_TYPE]
3584 #define dfloat64_ptr_type_node global_trees[TI_DFLOAT64_PTR_TYPE]
3585 #define dfloat128_ptr_type_node global_trees[TI_DFLOAT128_PTR_TYPE]
3587 /* The fixed-point types. */
3588 #define sat_short_fract_type_node global_trees[TI_SAT_SFRACT_TYPE]
3589 #define sat_fract_type_node global_trees[TI_SAT_FRACT_TYPE]
3590 #define sat_long_fract_type_node global_trees[TI_SAT_LFRACT_TYPE]
3591 #define sat_long_long_fract_type_node global_trees[TI_SAT_LLFRACT_TYPE]
3592 #define sat_unsigned_short_fract_type_node \
3593 global_trees[TI_SAT_USFRACT_TYPE]
3594 #define sat_unsigned_fract_type_node global_trees[TI_SAT_UFRACT_TYPE]
3595 #define sat_unsigned_long_fract_type_node \
3596 global_trees[TI_SAT_ULFRACT_TYPE]
3597 #define sat_unsigned_long_long_fract_type_node \
3598 global_trees[TI_SAT_ULLFRACT_TYPE]
3599 #define short_fract_type_node global_trees[TI_SFRACT_TYPE]
3600 #define fract_type_node global_trees[TI_FRACT_TYPE]
3601 #define long_fract_type_node global_trees[TI_LFRACT_TYPE]
3602 #define long_long_fract_type_node global_trees[TI_LLFRACT_TYPE]
3603 #define unsigned_short_fract_type_node global_trees[TI_USFRACT_TYPE]
3604 #define unsigned_fract_type_node global_trees[TI_UFRACT_TYPE]
3605 #define unsigned_long_fract_type_node global_trees[TI_ULFRACT_TYPE]
3606 #define unsigned_long_long_fract_type_node \
3607 global_trees[TI_ULLFRACT_TYPE]
3608 #define sat_short_accum_type_node global_trees[TI_SAT_SACCUM_TYPE]
3609 #define sat_accum_type_node global_trees[TI_SAT_ACCUM_TYPE]
3610 #define sat_long_accum_type_node global_trees[TI_SAT_LACCUM_TYPE]
3611 #define sat_long_long_accum_type_node global_trees[TI_SAT_LLACCUM_TYPE]
3612 #define sat_unsigned_short_accum_type_node \
3613 global_trees[TI_SAT_USACCUM_TYPE]
3614 #define sat_unsigned_accum_type_node global_trees[TI_SAT_UACCUM_TYPE]
3615 #define sat_unsigned_long_accum_type_node \
3616 global_trees[TI_SAT_ULACCUM_TYPE]
3617 #define sat_unsigned_long_long_accum_type_node \
3618 global_trees[TI_SAT_ULLACCUM_TYPE]
3619 #define short_accum_type_node global_trees[TI_SACCUM_TYPE]
3620 #define accum_type_node global_trees[TI_ACCUM_TYPE]
3621 #define long_accum_type_node global_trees[TI_LACCUM_TYPE]
3622 #define long_long_accum_type_node global_trees[TI_LLACCUM_TYPE]
3623 #define unsigned_short_accum_type_node global_trees[TI_USACCUM_TYPE]
3624 #define unsigned_accum_type_node global_trees[TI_UACCUM_TYPE]
3625 #define unsigned_long_accum_type_node global_trees[TI_ULACCUM_TYPE]
3626 #define unsigned_long_long_accum_type_node \
3627 global_trees[TI_ULLACCUM_TYPE]
3628 #define qq_type_node global_trees[TI_QQ_TYPE]
3629 #define hq_type_node global_trees[TI_HQ_TYPE]
3630 #define sq_type_node global_trees[TI_SQ_TYPE]
3631 #define dq_type_node global_trees[TI_DQ_TYPE]
3632 #define tq_type_node global_trees[TI_TQ_TYPE]
3633 #define uqq_type_node global_trees[TI_UQQ_TYPE]
3634 #define uhq_type_node global_trees[TI_UHQ_TYPE]
3635 #define usq_type_node global_trees[TI_USQ_TYPE]
3636 #define udq_type_node global_trees[TI_UDQ_TYPE]
3637 #define utq_type_node global_trees[TI_UTQ_TYPE]
3638 #define sat_qq_type_node global_trees[TI_SAT_QQ_TYPE]
3639 #define sat_hq_type_node global_trees[TI_SAT_HQ_TYPE]
3640 #define sat_sq_type_node global_trees[TI_SAT_SQ_TYPE]
3641 #define sat_dq_type_node global_trees[TI_SAT_DQ_TYPE]
3642 #define sat_tq_type_node global_trees[TI_SAT_TQ_TYPE]
3643 #define sat_uqq_type_node global_trees[TI_SAT_UQQ_TYPE]
3644 #define sat_uhq_type_node global_trees[TI_SAT_UHQ_TYPE]
3645 #define sat_usq_type_node global_trees[TI_SAT_USQ_TYPE]
3646 #define sat_udq_type_node global_trees[TI_SAT_UDQ_TYPE]
3647 #define sat_utq_type_node global_trees[TI_SAT_UTQ_TYPE]
3648 #define ha_type_node global_trees[TI_HA_TYPE]
3649 #define sa_type_node global_trees[TI_SA_TYPE]
3650 #define da_type_node global_trees[TI_DA_TYPE]
3651 #define ta_type_node global_trees[TI_TA_TYPE]
3652 #define uha_type_node global_trees[TI_UHA_TYPE]
3653 #define usa_type_node global_trees[TI_USA_TYPE]
3654 #define uda_type_node global_trees[TI_UDA_TYPE]
3655 #define uta_type_node global_trees[TI_UTA_TYPE]
3656 #define sat_ha_type_node global_trees[TI_SAT_HA_TYPE]
3657 #define sat_sa_type_node global_trees[TI_SAT_SA_TYPE]
3658 #define sat_da_type_node global_trees[TI_SAT_DA_TYPE]
3659 #define sat_ta_type_node global_trees[TI_SAT_TA_TYPE]
3660 #define sat_uha_type_node global_trees[TI_SAT_UHA_TYPE]
3661 #define sat_usa_type_node global_trees[TI_SAT_USA_TYPE]
3662 #define sat_uda_type_node global_trees[TI_SAT_UDA_TYPE]
3663 #define sat_uta_type_node global_trees[TI_SAT_UTA_TYPE]
3665 /* The node that should be placed at the end of a parameter list to
3666 indicate that the function does not take a variable number of
3667 arguments. The TREE_VALUE will be void_type_node and there will be
3668 no TREE_CHAIN. Language-independent code should not assume
3669 anything else about this node. */
3670 #define void_list_node global_trees[TI_VOID_LIST_NODE]
3672 #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
3673 #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
3675 /* Optimization options (OPTIMIZATION_NODE) to use for default and current
3677 #define optimization_default_node global_trees[TI_OPTIMIZATION_DEFAULT]
3678 #define optimization_current_node global_trees[TI_OPTIMIZATION_CURRENT]
3680 /* Default/current target options (TARGET_OPTION_NODE). */
3681 #define target_option_default_node global_trees[TI_TARGET_OPTION_DEFAULT]
3682 #define target_option_current_node global_trees[TI_TARGET_OPTION_CURRENT]
3684 /* Default tree list option(), optimize() pragmas to be linked into the
3686 #define current_target_pragma global_trees[TI_CURRENT_TARGET_PRAGMA]
3687 #define current_optimize_pragma global_trees[TI_CURRENT_OPTIMIZE_PRAGMA]
3689 /* An enumeration of the standard C integer types. These must be
3690 ordered so that shorter types appear before longer ones, and so
3691 that signed types appear before unsigned ones, for the correct
3692 functioning of interpret_integer() in c-lex.c. */
3693 enum integer_type_kind
3705 itk_unsigned_long_long,
3709 typedef enum integer_type_kind integer_type_kind;
3711 /* The standard C integer types. Use integer_type_kind to index into
3713 extern GTY(()) tree integer_types[itk_none];
3715 #define char_type_node integer_types[itk_char]
3716 #define signed_char_type_node integer_types[itk_signed_char]
3717 #define unsigned_char_type_node integer_types[itk_unsigned_char]
3718 #define short_integer_type_node integer_types[itk_short]
3719 #define short_unsigned_type_node integer_types[itk_unsigned_short]
3720 #define integer_type_node integer_types[itk_int]
3721 #define unsigned_type_node integer_types[itk_unsigned_int]
3722 #define long_integer_type_node integer_types[itk_long]
3723 #define long_unsigned_type_node integer_types[itk_unsigned_long]
3724 #define long_long_integer_type_node integer_types[itk_long_long]
3725 #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
3727 /* Set to the default thread-local storage (tls) model to use. */
3729 extern enum tls_model flag_tls_default;
3732 /* A pointer-to-function member type looks like:
3739 If __pfn is NULL, it is a NULL pointer-to-member-function.
3741 (Because the vtable is always the first thing in the object, we
3742 don't need its offset.) If the function is virtual, then PFN is
3743 one plus twice the index into the vtable; otherwise, it is just a
3744 pointer to the function.
3746 Unfortunately, using the lowest bit of PFN doesn't work in
3747 architectures that don't impose alignment requirements on function
3748 addresses, or that use the lowest bit to tell one ISA from another,
3749 for example. For such architectures, we use the lowest bit of
3750 DELTA instead of the lowest bit of the PFN, and DELTA will be
3753 enum ptrmemfunc_vbit_where_t
3755 ptrmemfunc_vbit_in_pfn,
3756 ptrmemfunc_vbit_in_delta
3759 #define NULL_TREE (tree) NULL
3761 extern tree decl_assembler_name (tree);
3762 extern bool decl_assembler_name_equal (tree decl, const_tree asmname);
3763 extern hashval_t decl_assembler_name_hash (const_tree asmname);
3765 /* Compute the number of bytes occupied by 'node'. This routine only
3766 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
3768 extern size_t tree_size (const_tree);
3770 /* Compute the number of bytes occupied by a tree with code CODE. This
3771 function cannot be used for TREE_VEC codes, which are of variable
3773 extern size_t tree_code_size (enum tree_code);
3775 /* Lowest level primitive for allocating a node.
3776 The TREE_CODE is the only argument. Contents are initialized
3777 to zero except for a few of the common fields. */
3779 extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
3780 #define make_node(t) make_node_stat (t MEM_STAT_INFO)
3782 /* Make a copy of a node, with all the same contents. */
3784 extern tree copy_node_stat (tree MEM_STAT_DECL);
3785 #define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
3787 /* Make a copy of a chain of TREE_LIST nodes. */
3789 extern tree copy_list (tree);
3792 extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
3793 #define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
3795 /* Make a TREE_VEC. */
3797 extern tree make_tree_vec_stat (int MEM_STAT_DECL);
3798 #define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
3800 /* Return the (unique) IDENTIFIER_NODE node for a given name.
3801 The name is supplied as a char *. */
3803 extern tree get_identifier (const char *);
3805 #if GCC_VERSION >= 3000
3806 #define get_identifier(str) \
3807 (__builtin_constant_p (str) \
3808 ? get_identifier_with_length ((str), strlen (str)) \
3809 : get_identifier (str))
3813 /* Identical to get_identifier, except that the length is assumed
3816 extern tree get_identifier_with_length (const char *, size_t);
3818 /* If an identifier with the name TEXT (a null-terminated string) has
3819 previously been referred to, return that node; otherwise return
3822 extern tree maybe_get_identifier (const char *);
3824 /* Construct various types of nodes. */
3826 extern tree build_nt (enum tree_code, ...);
3827 extern tree build_nt_call_list (tree, tree);
3828 extern tree build_nt_call_vec (tree, VEC(tree,gc) *);
3830 extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
3831 #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
3832 extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3833 #define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
3834 extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
3835 #define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
3836 extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
3837 #define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
3838 extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
3839 tree MEM_STAT_DECL);
3840 #define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
3841 extern tree build5_stat (enum tree_code, tree, tree, tree, tree, tree,
3842 tree MEM_STAT_DECL);
3843 #define build5(c,t1,t2,t3,t4,t5,t6) build5_stat (c,t1,t2,t3,t4,t5,t6 MEM_STAT_INFO)
3844 extern tree build6_stat (enum tree_code, tree, tree, tree, tree, tree,
3845 tree, tree MEM_STAT_DECL);
3846 #define build6(c,t1,t2,t3,t4,t5,t6,t7) \
3847 build6_stat (c,t1,t2,t3,t4,t5,t6,t7 MEM_STAT_INFO)
3849 extern tree build_int_cst (tree, HOST_WIDE_INT);
3850 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
3851 extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
3852 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3853 extern tree build_int_cst_wide_type (tree,
3854 unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3855 extern tree build_vector (tree, tree);
3856 extern tree build_vector_from_ctor (tree, VEC(constructor_elt,gc) *);
3857 extern tree build_constructor (tree, VEC(constructor_elt,gc) *);
3858 extern tree build_constructor_single (tree, tree, tree);
3859 extern tree build_constructor_from_list (tree, tree);
3860 extern tree build_real_from_int_cst (tree, const_tree);
3861 extern tree build_complex (tree, tree, tree);
3862 extern tree build_one_cst (tree);
3863 extern tree build_string (int, const char *);
3864 extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
3865 #define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
3866 extern tree build_tree_list_vec_stat (const VEC(tree,gc) * MEM_STAT_DECL);
3867 #define build_tree_list_vec(v) build_tree_list_vec_stat (v MEM_STAT_INFO)
3868 extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3869 extern tree build_fn_decl (const char *, tree);
3870 #define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
3871 extern tree build_block (tree, tree, tree, tree);
3872 extern tree build_empty_stmt (void);
3873 extern tree build_omp_clause (enum omp_clause_code);
3875 extern tree build_vl_exp_stat (enum tree_code, int MEM_STAT_DECL);
3876 #define build_vl_exp(c,n) build_vl_exp_stat (c,n MEM_STAT_INFO)
3878 extern tree build_call_list (tree, tree, tree);
3879 extern tree build_call_nary (tree, tree, int, ...);
3880 extern tree build_call_valist (tree, tree, int, va_list);
3881 extern tree build_call_array (tree, tree, int, const tree *);
3882 extern tree build_call_vec (tree, tree, VEC(tree,gc) *);
3884 /* Construct various nodes representing data types. */
3886 extern tree make_signed_type (int);
3887 extern tree make_unsigned_type (int);
3888 extern tree signed_or_unsigned_type_for (int, tree);
3889 extern tree signed_type_for (tree);
3890 extern tree unsigned_type_for (tree);
3891 extern void initialize_sizetypes (bool);
3892 extern void set_sizetype (tree);
3893 extern void fixup_unsigned_type (tree);
3894 extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
3895 extern tree build_pointer_type (tree);
3896 extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
3897 extern tree build_reference_type (tree);
3898 extern tree build_vector_type_for_mode (tree, enum machine_mode);
3899 extern tree build_vector_type (tree innertype, int nunits);
3900 extern tree build_opaque_vector_type (tree innertype, int nunits);
3901 extern tree build_type_no_quals (tree);
3902 extern tree build_index_type (tree);
3903 extern tree build_index_2_type (tree, tree);
3904 extern tree build_array_type (tree, tree);
3905 extern tree build_function_type (tree, tree);
3906 extern tree build_function_type_list (tree, ...);
3907 extern tree build_function_type_skip_args (tree, bitmap);
3908 extern tree build_function_decl_skip_args (tree, bitmap);
3909 extern tree build_varargs_function_type_list (tree, ...);
3910 extern tree build_method_type_directly (tree, tree, tree);
3911 extern tree build_method_type (tree, tree);
3912 extern tree build_offset_type (tree, tree);
3913 extern tree build_complex_type (tree);
3914 extern tree build_resx (int);
3915 extern tree array_type_nelts (const_tree);
3916 extern bool in_array_bounds_p (tree);
3917 extern bool range_in_array_bounds_p (tree);
3919 extern tree value_member (tree, tree);
3920 extern tree purpose_member (const_tree, tree);
3922 extern int attribute_list_equal (const_tree, const_tree);
3923 extern int attribute_list_contained (const_tree, const_tree);
3924 extern int tree_int_cst_equal (const_tree, const_tree);
3925 extern int tree_int_cst_lt (const_tree, const_tree);
3926 extern int tree_int_cst_compare (const_tree, const_tree);
3927 extern int host_integerp (const_tree, int);
3928 extern HOST_WIDE_INT tree_low_cst (const_tree, int);
3929 extern int tree_int_cst_msb (const_tree);
3930 extern int tree_int_cst_sgn (const_tree);
3931 extern int tree_int_cst_sign_bit (const_tree);
3932 extern unsigned int tree_int_cst_min_precision (tree, bool);
3933 extern bool tree_expr_nonnegative_p (tree);
3934 extern bool tree_expr_nonnegative_warnv_p (tree, bool *);
3935 extern bool may_negate_without_overflow_p (const_tree);
3936 extern tree strip_array_types (tree);
3937 extern tree excess_precision_type (tree);
3939 /* Construct various nodes representing fract or accum data types. */
3941 extern tree make_fract_type (int, int, int);
3942 extern tree make_accum_type (int, int, int);
3944 #define make_signed_fract_type(P) make_fract_type (P, 0, 0)
3945 #define make_unsigned_fract_type(P) make_fract_type (P, 1, 0)
3946 #define make_sat_signed_fract_type(P) make_fract_type (P, 0, 1)
3947 #define make_sat_unsigned_fract_type(P) make_fract_type (P, 1, 1)
3948 #define make_signed_accum_type(P) make_accum_type (P, 0, 0)
3949 #define make_unsigned_accum_type(P) make_accum_type (P, 1, 0)
3950 #define make_sat_signed_accum_type(P) make_accum_type (P, 0, 1)
3951 #define make_sat_unsigned_accum_type(P) make_accum_type (P, 1, 1)
3953 #define make_or_reuse_signed_fract_type(P) \
3954 make_or_reuse_fract_type (P, 0, 0)
3955 #define make_or_reuse_unsigned_fract_type(P) \
3956 make_or_reuse_fract_type (P, 1, 0)
3957 #define make_or_reuse_sat_signed_fract_type(P) \
3958 make_or_reuse_fract_type (P, 0, 1)
3959 #define make_or_reuse_sat_unsigned_fract_type(P) \
3960 make_or_reuse_fract_type (P, 1, 1)
3961 #define make_or_reuse_signed_accum_type(P) \
3962 make_or_reuse_accum_type (P, 0, 0)
3963 #define make_or_reuse_unsigned_accum_type(P) \
3964 make_or_reuse_accum_type (P, 1, 0)
3965 #define make_or_reuse_sat_signed_accum_type(P) \
3966 make_or_reuse_accum_type (P, 0, 1)
3967 #define make_or_reuse_sat_unsigned_accum_type(P) \
3968 make_or_reuse_accum_type (P, 1, 1)
3970 /* From expmed.c. Since rtl.h is included after tree.h, we can't
3971 put the prototype here. Rtl.h does declare the prototype if
3972 tree.h had been included. */
3974 extern tree make_tree (tree, rtx);
3976 /* Return a type like TTYPE except that its TYPE_ATTRIBUTES
3979 Such modified types already made are recorded so that duplicates
3982 extern tree build_type_attribute_variant (tree, tree);
3983 extern tree build_decl_attribute_variant (tree, tree);
3985 /* Structure describing an attribute and a function to handle it. */
3986 struct attribute_spec
3988 /* The name of the attribute (without any leading or trailing __),
3989 or NULL to mark the end of a table of attributes. */
3990 const char *const name;
3991 /* The minimum length of the list of arguments of the attribute. */
3992 const int min_length;
3993 /* The maximum length of the list of arguments of the attribute
3994 (-1 for no maximum). */
3995 const int max_length;
3996 /* Whether this attribute requires a DECL. If it does, it will be passed
3997 from types of DECLs, function return types and array element types to
3998 the DECLs, function types and array types respectively; but when
3999 applied to a type in any other circumstances, it will be ignored with
4000 a warning. (If greater control is desired for a given attribute,
4001 this should be false, and the flags argument to the handler may be
4002 used to gain greater control in that case.) */
4003 const bool decl_required;
4004 /* Whether this attribute requires a type. If it does, it will be passed
4005 from a DECL to the type of that DECL. */
4006 const bool type_required;
4007 /* Whether this attribute requires a function (or method) type. If it does,
4008 it will be passed from a function pointer type to the target type,
4009 and from a function return type (which is not itself a function
4010 pointer type) to the function type. */
4011 const bool function_type_required;
4012 /* Function to handle this attribute. NODE points to the node to which
4013 the attribute is to be applied. If a DECL, it should be modified in
4014 place; if a TYPE, a copy should be created. NAME is the name of the
4015 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
4016 of the arguments (which may be NULL). FLAGS gives further information
4017 about the context of the attribute. Afterwards, the attributes will
4018 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
4019 unless *NO_ADD_ATTRS is set to true (which should be done on error,
4020 as well as in any other cases when the attributes should not be added
4021 to the DECL or TYPE). Depending on FLAGS, any attributes to be
4022 applied to another type or DECL later may be returned;
4023 otherwise the return value should be NULL_TREE. This pointer may be
4024 NULL if no special handling is required beyond the checks implied
4025 by the rest of this structure. */
4026 tree (*const handler) (tree *node, tree name, tree args,
4027 int flags, bool *no_add_attrs);
4030 /* Flags that may be passed in the third argument of decl_attributes, and
4031 to handler functions for attributes. */
4032 enum attribute_flags
4034 /* The type passed in is the type of a DECL, and any attributes that
4035 should be passed in again to be applied to the DECL rather than the
4036 type should be returned. */
4037 ATTR_FLAG_DECL_NEXT = 1,
4038 /* The type passed in is a function return type, and any attributes that
4039 should be passed in again to be applied to the function type rather
4040 than the return type should be returned. */
4041 ATTR_FLAG_FUNCTION_NEXT = 2,
4042 /* The type passed in is an array element type, and any attributes that
4043 should be passed in again to be applied to the array type rather
4044 than the element type should be returned. */
4045 ATTR_FLAG_ARRAY_NEXT = 4,
4046 /* The type passed in is a structure, union or enumeration type being
4047 created, and should be modified in place. */
4048 ATTR_FLAG_TYPE_IN_PLACE = 8,
4049 /* The attributes are being applied by default to a library function whose
4050 name indicates known behavior, and should be silently ignored if they
4051 are not in fact compatible with the function type. */
4052 ATTR_FLAG_BUILT_IN = 16
4055 /* Default versions of target-overridable functions. */
4057 extern tree merge_decl_attributes (tree, tree);
4058 extern tree merge_type_attributes (tree, tree);
4060 /* Given a tree node and a string, return nonzero if the tree node is
4061 a valid attribute name for the string. */
4063 extern int is_attribute_p (const char *, const_tree);
4065 /* Given an attribute name and a list of attributes, return the list element
4066 of the attribute or NULL_TREE if not found. */
4068 extern tree lookup_attribute (const char *, tree);
4070 /* Remove any instances of attribute ATTR_NAME in LIST and return the
4073 extern tree remove_attribute (const char *, tree);
4075 /* Given two attributes lists, return a list of their union. */
4077 extern tree merge_attributes (tree, tree);
4079 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
4080 /* Given two Windows decl attributes lists, possibly including
4081 dllimport, return a list of their union . */
4082 extern tree merge_dllimport_decl_attributes (tree, tree);
4084 /* Handle a "dllimport" or "dllexport" attribute. */
4085 extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
4088 /* Check whether CAND is suitable to be returned from get_qualified_type
4089 (BASE, TYPE_QUALS). */
4091 extern bool check_qualified_type (const_tree, const_tree, int);
4093 /* Return a version of the TYPE, qualified as indicated by the
4094 TYPE_QUALS, if one exists. If no qualified version exists yet,
4095 return NULL_TREE. */
4097 extern tree get_qualified_type (tree, int);
4099 /* Like get_qualified_type, but creates the type if it does not
4100 exist. This function never returns NULL_TREE. */
4102 extern tree build_qualified_type (tree, int);
4104 /* Like build_qualified_type, but only deals with the `const' and
4105 `volatile' qualifiers. This interface is retained for backwards
4106 compatibility with the various front-ends; new code should use
4107 build_qualified_type instead. */
4109 #define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
4110 build_qualified_type ((TYPE), \
4111 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
4112 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
4114 /* Make a copy of a type node. */
4116 extern tree build_distinct_type_copy (tree);
4117 extern tree build_variant_type_copy (tree);
4119 /* Finish up a builtin RECORD_TYPE. Give it a name and provide its
4120 fields. Optionally specify an alignment, and then lay it out. */
4122 extern void finish_builtin_struct (tree, const char *,
4125 /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
4126 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
4127 node, does nothing except for the first time. */
4129 extern void layout_type (tree);
4131 /* These functions allow a front-end to perform a manual layout of a
4132 RECORD_TYPE. (For instance, if the placement of subsequent fields
4133 depends on the placement of fields so far.) Begin by calling
4134 start_record_layout. Then, call place_field for each of the
4135 fields. Then, call finish_record_layout. See layout_type for the
4136 default way in which these functions are used. */
4138 typedef struct record_layout_info_s
4140 /* The RECORD_TYPE that we are laying out. */
4142 /* The offset into the record so far, in bytes, not including bits in
4145 /* The last known alignment of SIZE. */
4146 unsigned int offset_align;
4147 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
4149 /* The alignment of the record so far, in bits. */
4150 unsigned int record_align;
4151 /* The alignment of the record so far, ignoring #pragma pack and
4152 __attribute__ ((packed)), in bits. */
4153 unsigned int unpacked_align;
4154 /* The previous field layed out. */
4156 /* The static variables (i.e., class variables, as opposed to
4157 instance variables) encountered in T. */
4158 tree pending_statics;