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;
365 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;
374 unsigned visited : 1;
378 union tree_ann_d *ann;
381 struct GTY(()) tree_common {
382 struct tree_base base;
387 /* The following table lists the uses of each of the above flags and
388 for which types of nodes they are defined.
393 VAR_DECL, FUNCTION_DECL, FIELD_DECL, LABEL_DECL
395 CONSTRUCTOR, IDENTIFIER_NODE
396 STMT_EXPR, it means we want the result of the enclosed expression
398 CALL_EXPR_TAILCALL in
407 VAR_DECL, FUNCTION_DECL
410 TREE_NO_TRAMPOLINE in
416 TREE_SYMBOL_REFERENCED in
420 TARGET_EXPR, WITH_CLEANUP_EXPR
422 TRY_CATCH_IS_CLEANUP in
428 EH_FILTER_MUST_NOT_THROW in
431 TYPE_REF_CAN_ALIAS_ALL in
432 POINTER_TYPE, REFERENCE_TYPE
440 CALL_CANNOT_INLINE_P in
446 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
449 VAR_DECL, FUNCTION_DECL
455 CALL_EXPR_VA_ARG_PACK in
458 TYPE_CACHED_VALUES_P in
461 SAVE_EXPR_RESOLVED_P in
464 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
465 OMP_CLAUSE_LASTPRIVATE
467 OMP_CLAUSE_PRIVATE_DEBUG in
475 CALL_EXPR_RETURN_SLOT_OPT in
479 PARM_DECL, RESULT_DECL, VAR_DECL (only !TREE_STATIC)
484 OMP_PARALLEL_COMBINED in
486 OMP_CLAUSE_PRIVATE_OUTER_REF in
510 TREE_THIS_VOLATILE in
533 TYPE_SIZES_GIMPLIFIED in
544 REGISTER_DEFS_IN_THIS_STMT in
545 all expressions (tree-into-ssa.c)
550 VAR_DECL, FUNCTION_DECL
551 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
552 BLOCK, SSA_NAME, STRING_CST
555 all expressions (tree-ssa-dce.c, tree-ssa-pre.c)
574 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
581 IDENTIFIER_TRANSPARENT_ALIAS in
584 STMT_IN_SSA_EDGE_WORKLIST in
585 all expressions (tree-ssa-propagate.c)
587 TYPE_VECTOR_OPAQUE in
593 all trees (used liberally by many passes)
608 SSA_NAME_IS_DEFAULT_DEF in
613 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
614 enum tree_node_structure_enum {
615 #include "treestruct.def"
620 /* Define accessors for the fields that all tree nodes have
621 (though some fields are not used for all kinds of nodes). */
623 /* The tree-code says what kind of node it is.
624 Codes are defined in tree.def. */
625 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->base.code)
626 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->base.code = (VALUE))
628 /* When checking is enabled, errors will be generated if a tree node
629 is accessed incorrectly. The macros die with a fatal error. */
630 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
632 #define TREE_CHECK(T, CODE) __extension__ \
633 ({ __typeof (T) const __t = (T); \
634 if (TREE_CODE (__t) != (CODE)) \
635 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
639 #define TREE_NOT_CHECK(T, CODE) __extension__ \
640 ({ __typeof (T) const __t = (T); \
641 if (TREE_CODE (__t) == (CODE)) \
642 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
646 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
647 ({ __typeof (T) const __t = (T); \
648 if (TREE_CODE (__t) != (CODE1) \
649 && TREE_CODE (__t) != (CODE2)) \
650 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
651 (CODE1), (CODE2), 0); \
654 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
655 ({ __typeof (T) const __t = (T); \
656 if (TREE_CODE (__t) == (CODE1) \
657 || TREE_CODE (__t) == (CODE2)) \
658 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
659 (CODE1), (CODE2), 0); \
662 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
663 ({ __typeof (T) const __t = (T); \
664 if (TREE_CODE (__t) != (CODE1) \
665 && TREE_CODE (__t) != (CODE2) \
666 && TREE_CODE (__t) != (CODE3)) \
667 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
668 (CODE1), (CODE2), (CODE3), 0); \
671 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
672 ({ __typeof (T) const __t = (T); \
673 if (TREE_CODE (__t) == (CODE1) \
674 || TREE_CODE (__t) == (CODE2) \
675 || TREE_CODE (__t) == (CODE3)) \
676 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
677 (CODE1), (CODE2), (CODE3), 0); \
680 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
681 ({ __typeof (T) const __t = (T); \
682 if (TREE_CODE (__t) != (CODE1) \
683 && TREE_CODE (__t) != (CODE2) \
684 && TREE_CODE (__t) != (CODE3) \
685 && TREE_CODE (__t) != (CODE4)) \
686 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
687 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
690 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
691 ({ __typeof (T) const __t = (T); \
692 if (TREE_CODE (__t) == (CODE1) \
693 || TREE_CODE (__t) == (CODE2) \
694 || TREE_CODE (__t) == (CODE3) \
695 || TREE_CODE (__t) == (CODE4)) \
696 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
697 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
700 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
701 ({ __typeof (T) const __t = (T); \
702 if (TREE_CODE (__t) != (CODE1) \
703 && TREE_CODE (__t) != (CODE2) \
704 && TREE_CODE (__t) != (CODE3) \
705 && TREE_CODE (__t) != (CODE4) \
706 && TREE_CODE (__t) != (CODE5)) \
707 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
708 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
711 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
712 ({ __typeof (T) const __t = (T); \
713 if (TREE_CODE (__t) == (CODE1) \
714 || TREE_CODE (__t) == (CODE2) \
715 || TREE_CODE (__t) == (CODE3) \
716 || TREE_CODE (__t) == (CODE4) \
717 || TREE_CODE (__t) == (CODE5)) \
718 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
719 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
722 #define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
723 ({ __typeof (T) const __t = (T); \
724 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
725 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
729 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
730 ({ __typeof (T) const __t = (T); \
731 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
732 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
736 #define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
737 ({ __typeof (T) const __t = (T); \
738 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
739 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
743 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
744 ({ __typeof (T) const __t = (T); \
745 if (TREE_CODE (__t) != OMP_CLAUSE) \
746 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
748 if (__t->omp_clause.code != (CODE)) \
749 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
753 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
754 ({ __typeof (T) const __t = (T); \
755 if (TREE_CODE (__t) != OMP_CLAUSE) \
756 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
758 if ((int) __t->omp_clause.code < (int) (CODE1) \
759 || (int) __t->omp_clause.code > (int) (CODE2)) \
760 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
761 __FUNCTION__, (CODE1), (CODE2)); \
764 /* These checks have to be special cased. */
765 #define EXPR_CHECK(T) __extension__ \
766 ({ __typeof (T) const __t = (T); \
767 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
768 if (!IS_EXPR_CODE_CLASS (__c)) \
769 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
773 /* These checks have to be special cased. */
774 #define NON_TYPE_CHECK(T) __extension__ \
775 ({ __typeof (T) const __t = (T); \
777 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
781 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
782 (*({__typeof (T) const __t = (T); \
783 const int __i = (I); \
784 if (TREE_CODE (__t) != TREE_VEC) \
785 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
787 if (__i < 0 || __i >= __t->vec.length) \
788 tree_vec_elt_check_failed (__i, __t->vec.length, \
789 __FILE__, __LINE__, __FUNCTION__); \
790 &__t->vec.a[__i]; }))
792 #define OMP_CLAUSE_ELT_CHECK(T, I) __extension__ \
793 (*({__typeof (T) const __t = (T); \
794 const int __i = (I); \
795 if (TREE_CODE (__t) != OMP_CLAUSE) \
796 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
798 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
799 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
801 &__t->omp_clause.ops[__i]; }))
803 /* Special checks for TREE_OPERANDs. */
804 #define TREE_OPERAND_CHECK(T, I) __extension__ \
805 (*({__typeof (T) const __t = EXPR_CHECK (T); \
806 const int __i = (I); \
807 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
808 tree_operand_check_failed (__i, __t, \
809 __FILE__, __LINE__, __FUNCTION__); \
810 &__t->exp.operands[__i]; }))
812 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
813 (*({__typeof (T) const __t = (T); \
814 const int __i = (I); \
815 if (TREE_CODE (__t) != CODE) \
816 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
817 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
818 tree_operand_check_failed (__i, __t, \
819 __FILE__, __LINE__, __FUNCTION__); \
820 &__t->exp.operands[__i]; }))
822 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
824 ({__typeof (T) const __t = (T); \
825 const int __i = (I); \
826 if (TREE_CODE (__t) != (CODE)) \
827 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
828 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
829 tree_operand_check_failed (__i, __t, \
830 __FILE__, __LINE__, __FUNCTION__); \
831 &__t->exp.operands[__i]; }))
833 /* Nodes are chained together for many purposes.
834 Types are chained together to record them for being output to the debugger
835 (see the function `chain_type').
836 Decls in the same scope are chained together to record the contents
838 Statement nodes for successive statements used to be chained together.
839 Often lists of things are represented by TREE_LIST nodes that
840 are chained together. */
842 #define TREE_CHAIN(NODE) __extension__ \
843 (*({__typeof (NODE) const __t = (NODE); \
844 &__t->common.chain; }))
846 /* In all nodes that are expressions, this is the data type of the expression.
847 In POINTER_TYPE nodes, this is the type that the pointer points to.
848 In ARRAY_TYPE nodes, this is the type of the elements.
849 In VECTOR_TYPE nodes, this is the type of the elements. */
850 #define TREE_TYPE(NODE) __extension__ \
851 (*({__typeof (NODE) const __t = (NODE); \
852 &__t->common.type; }))
854 extern void tree_contains_struct_check_failed (const_tree,
855 const enum tree_node_structure_enum,
856 const char *, int, const char *)
859 extern void tree_check_failed (const_tree, const char *, int, const char *,
860 ...) ATTRIBUTE_NORETURN;
861 extern void tree_not_check_failed (const_tree, const char *, int, const char *,
862 ...) ATTRIBUTE_NORETURN;
863 extern void tree_class_check_failed (const_tree, const enum tree_code_class,
864 const char *, int, const char *)
866 extern void tree_range_check_failed (const_tree, const char *, int,
867 const char *, enum tree_code,
869 extern void tree_not_class_check_failed (const_tree,
870 const enum tree_code_class,
871 const char *, int, const char *)
873 extern void tree_vec_elt_check_failed (int, int, const char *,
876 extern void phi_node_elt_check_failed (int, int, const char *,
879 extern void tree_operand_check_failed (int, const_tree,
880 const char *, int, const char *)
882 extern void omp_clause_check_failed (const_tree, const char *, int,
883 const char *, enum omp_clause_code)
885 extern void omp_clause_operand_check_failed (int, const_tree, const char *,
888 extern void omp_clause_range_check_failed (const_tree, const char *, int,
889 const char *, enum omp_clause_code,
890 enum omp_clause_code)
893 #else /* not ENABLE_TREE_CHECKING, or not gcc */
895 #define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
896 #define TREE_CHECK(T, CODE) (T)
897 #define TREE_NOT_CHECK(T, CODE) (T)
898 #define TREE_CHECK2(T, CODE1, CODE2) (T)
899 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
900 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
901 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
902 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
903 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
904 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
905 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
906 #define TREE_CLASS_CHECK(T, CODE) (T)
907 #define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
908 #define EXPR_CHECK(T) (T)
909 #define NON_TYPE_CHECK(T) (T)
910 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
911 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
912 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
913 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
914 #define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
915 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
916 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
918 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
919 #define TREE_TYPE(NODE) ((NODE)->common.type)
923 #define TREE_BLOCK(NODE) *(tree_block (NODE))
925 #include "tree-check.h"
927 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
928 #define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
929 #define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
930 #define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
931 #define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
932 #define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
933 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
934 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
935 #define VL_EXP_CHECK(T) TREE_CLASS_CHECK (T, tcc_vl_exp)
936 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
937 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
939 #define RECORD_OR_UNION_CHECK(T) \
940 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
941 #define NOT_RECORD_OR_UNION_CHECK(T) \
942 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
944 #define NUMERICAL_TYPE_CHECK(T) \
945 TREE_CHECK5 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE, \
948 /* Here is how primitive or already-canonicalized types' hash codes
950 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
952 /* A simple hash function for an arbitrary tree node. This must not be
953 used in hash tables which are saved to a PCH. */
954 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
956 /* Tests if CODE is a conversion expr (NOP_EXPR or CONVERT_EXPR). */
957 #define CONVERT_EXPR_CODE_P(CODE) \
958 ((CODE) == NOP_EXPR || (CODE) == CONVERT_EXPR)
960 /* Similarly, but accept an expressions instead of a tree code. */
961 #define CONVERT_EXPR_P(EXP) CONVERT_EXPR_CODE_P (TREE_CODE (EXP))
963 /* Generate case for NOP_EXPR, CONVERT_EXPR. */
965 #define CASE_CONVERT \
969 /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
970 that don't change the machine mode. */
972 #define STRIP_NOPS(EXP) \
973 while ((CONVERT_EXPR_P (EXP) \
974 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
975 && TREE_OPERAND (EXP, 0) != error_mark_node \
976 && (TYPE_MODE (TREE_TYPE (EXP)) \
977 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
978 (EXP) = TREE_OPERAND (EXP, 0)
980 /* Like STRIP_NOPS, but don't let the signedness change either. */
982 #define STRIP_SIGN_NOPS(EXP) \
983 while ((CONVERT_EXPR_P (EXP) \
984 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
985 && TREE_OPERAND (EXP, 0) != error_mark_node \
986 && (TYPE_MODE (TREE_TYPE (EXP)) \
987 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
988 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
989 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
990 && (POINTER_TYPE_P (TREE_TYPE (EXP)) \
991 == POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
992 (EXP) = TREE_OPERAND (EXP, 0)
994 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
996 #define STRIP_TYPE_NOPS(EXP) \
997 while ((CONVERT_EXPR_P (EXP) \
998 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
999 && TREE_OPERAND (EXP, 0) != error_mark_node \
1000 && (TREE_TYPE (EXP) \
1001 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
1002 (EXP) = TREE_OPERAND (EXP, 0)
1004 /* Remove unnecessary type conversions according to
1005 tree_ssa_useless_type_conversion. */
1007 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
1008 while (tree_ssa_useless_type_conversion (EXP)) \
1009 EXP = TREE_OPERAND (EXP, 0)
1011 /* Nonzero if TYPE represents an integral type. Note that we do not
1012 include COMPLEX types here. Keep these checks in ascending code
1015 #define INTEGRAL_TYPE_P(TYPE) \
1016 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
1017 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
1018 || TREE_CODE (TYPE) == INTEGER_TYPE)
1020 /* Nonzero if TYPE represents a non-saturating fixed-point type. */
1022 #define NON_SAT_FIXED_POINT_TYPE_P(TYPE) \
1023 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && !TYPE_SATURATING (TYPE))
1025 /* Nonzero if TYPE represents a saturating fixed-point type. */
1027 #define SAT_FIXED_POINT_TYPE_P(TYPE) \
1028 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && TYPE_SATURATING (TYPE))
1030 /* Nonzero if TYPE represents a fixed-point type. */
1032 #define FIXED_POINT_TYPE_P(TYPE) (TREE_CODE (TYPE) == FIXED_POINT_TYPE)
1034 /* Nonzero if TYPE represents a scalar floating-point type. */
1036 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
1038 /* Nonzero if TYPE represents a complex floating-point type. */
1040 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
1041 (TREE_CODE (TYPE) == COMPLEX_TYPE \
1042 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1044 /* Nonzero if TYPE represents a vector floating-point type. */
1046 #define VECTOR_FLOAT_TYPE_P(TYPE) \
1047 (TREE_CODE (TYPE) == VECTOR_TYPE \
1048 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1050 /* Nonzero if TYPE represents a floating-point type, including complex
1051 and vector floating-point types. The vector and complex check does
1052 not use the previous two macros to enable early folding. */
1054 #define FLOAT_TYPE_P(TYPE) \
1055 (SCALAR_FLOAT_TYPE_P (TYPE) \
1056 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
1057 || TREE_CODE (TYPE) == VECTOR_TYPE) \
1058 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
1060 /* Nonzero if TYPE represents a decimal floating-point type. */
1061 #define DECIMAL_FLOAT_TYPE_P(TYPE) \
1062 (SCALAR_FLOAT_TYPE_P (TYPE) \
1063 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
1065 /* Nonzero if TYPE represents an aggregate (multi-component) type.
1066 Keep these checks in ascending code order. */
1068 #define AGGREGATE_TYPE_P(TYPE) \
1069 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
1070 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
1072 /* Nonzero if TYPE represents a pointer or reference type.
1073 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
1074 ascending code order. */
1076 #define POINTER_TYPE_P(TYPE) \
1077 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
1079 /* Nonzero if this type is a complete type. */
1080 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
1082 /* Nonzero if this type is the (possibly qualified) void type. */
1083 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
1085 /* Nonzero if this type is complete or is cv void. */
1086 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
1087 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
1089 /* Nonzero if this type is complete or is an array with unspecified bound. */
1090 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1091 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1094 /* Define many boolean fields that all tree nodes have. */
1096 /* In VAR_DECL nodes, nonzero means address of this is needed.
1097 So it cannot be in a register.
1098 In a FUNCTION_DECL, nonzero means its address is needed.
1099 So it must be compiled even if it is an inline function.
1100 In a FIELD_DECL node, it means that the programmer is permitted to
1101 construct the address of this field. This is used for aliasing
1102 purposes: see record_component_aliases.
1103 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1104 In LABEL_DECL nodes, it means a goto for this label has been seen
1105 from a place outside all binding contours that restore stack levels.
1106 In ..._TYPE nodes, it means that objects of this type must
1107 be fully addressable. This means that pieces of this
1108 object cannot go into register parameters, for example.
1109 In IDENTIFIER_NODEs, this means that some extern decl for this name
1110 had its address taken. That matters for inline functions. */
1111 #define TREE_ADDRESSABLE(NODE) ((NODE)->base.addressable_flag)
1113 /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1114 exit of a function. Calls for which this is true are candidates for tail
1115 call optimizations. */
1116 #define CALL_EXPR_TAILCALL(NODE) \
1117 (CALL_EXPR_CHECK(NODE)->base.addressable_flag)
1119 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1120 CASE_LOW operand has been processed. */
1121 #define CASE_LOW_SEEN(NODE) \
1122 (CASE_LABEL_EXPR_CHECK (NODE)->base.addressable_flag)
1124 #define PREDICT_EXPR_OUTCOME(NODE) \
1125 ((enum prediction) (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag))
1126 #define SET_PREDICT_EXPR_OUTCOME(NODE, OUTCOME) \
1127 (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag = (int) OUTCOME)
1128 #define PREDICT_EXPR_PREDICTOR(NODE) \
1129 ((enum br_predictor)tree_low_cst (TREE_OPERAND (PREDICT_EXPR_CHECK (NODE), 0), 0))
1131 /* In a VAR_DECL, nonzero means allocate static storage.
1132 In a FUNCTION_DECL, nonzero if function has been defined.
1133 In a CONSTRUCTOR, nonzero means allocate static storage. */
1134 #define TREE_STATIC(NODE) ((NODE)->base.static_flag)
1136 /* In an ADDR_EXPR, nonzero means do not use a trampoline. */
1137 #define TREE_NO_TRAMPOLINE(NODE) (ADDR_EXPR_CHECK (NODE)->base.static_flag)
1139 /* In a TARGET_EXPR or WITH_CLEANUP_EXPR, means that the pertinent cleanup
1140 should only be executed if an exception is thrown, not on normal exit
1142 #define CLEANUP_EH_ONLY(NODE) ((NODE)->base.static_flag)
1144 /* In a TRY_CATCH_EXPR, means that the handler should be considered a
1145 separate cleanup in honor_protect_cleanup_actions. */
1146 #define TRY_CATCH_IS_CLEANUP(NODE) \
1147 (TRY_CATCH_EXPR_CHECK (NODE)->base.static_flag)
1149 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1150 CASE_HIGH operand has been processed. */
1151 #define CASE_HIGH_SEEN(NODE) \
1152 (CASE_LABEL_EXPR_CHECK (NODE)->base.static_flag)
1154 /* Used to mark a CALL_EXPR as not suitable for inlining. */
1155 #define CALL_CANNOT_INLINE_P(NODE) (CALL_EXPR_CHECK (NODE)->base.static_flag)
1157 /* In an expr node (usually a conversion) this means the node was made
1158 implicitly and should not lead to any sort of warning. In a decl node,
1159 warnings concerning the decl should be suppressed. This is used at
1160 least for used-before-set warnings, and it set after one warning is
1162 #define TREE_NO_WARNING(NODE) ((NODE)->base.nowarning_flag)
1164 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
1165 this string as an argument. */
1166 #define TREE_SYMBOL_REFERENCED(NODE) \
1167 (IDENTIFIER_NODE_CHECK (NODE)->base.static_flag)
1169 /* Nonzero in a pointer or reference type means the data pointed to
1170 by this type can alias anything. */
1171 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1172 (PTR_OR_REF_CHECK (NODE)->base.static_flag)
1174 /* In a MODIFY_EXPR, means that the store in the expression is nontemporal. */
1175 #define MOVE_NONTEMPORAL(NODE) \
1176 (EXPR_CHECK (NODE)->base.static_flag)
1178 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1179 there was an overflow in folding. */
1181 #define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->base.public_flag)
1183 /* TREE_OVERFLOW can only be true for EXPR of CONSTANT_CLASS_P. */
1185 #define TREE_OVERFLOW_P(EXPR) \
1186 (CONSTANT_CLASS_P (EXPR) && TREE_OVERFLOW (EXPR))
1188 /* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1189 nonzero means name is to be accessible from outside this translation unit.
1190 In an IDENTIFIER_NODE, nonzero means an external declaration
1191 accessible from outside this translation unit was previously seen
1192 for this name in an inner scope. */
1193 #define TREE_PUBLIC(NODE) ((NODE)->base.public_flag)
1195 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1196 of cached values, or is something else. */
1197 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->base.public_flag)
1199 /* In a SAVE_EXPR, indicates that the original expression has already
1200 been substituted with a VAR_DECL that contains the value. */
1201 #define SAVE_EXPR_RESOLVED_P(NODE) \
1202 (SAVE_EXPR_CHECK (NODE)->base.public_flag)
1204 /* Set on a CALL_EXPR if this stdarg call should be passed the argument
1206 #define CALL_EXPR_VA_ARG_PACK(NODE) \
1207 (CALL_EXPR_CHECK(NODE)->base.public_flag)
1209 /* In any expression, decl, or constant, nonzero means it has side effects or
1210 reevaluation of the whole expression could produce a different value.
1211 This is set if any subexpression is a function call, a side effect or a
1212 reference to a volatile variable. In a ..._DECL, this is set only if the
1213 declaration said `volatile'. This will never be set for a constant. */
1214 #define TREE_SIDE_EFFECTS(NODE) \
1215 (NON_TYPE_CHECK (NODE)->base.side_effects_flag)
1217 /* In a LABEL_DECL, nonzero means this label had its address taken
1218 and therefore can never be deleted and is a jump target for
1220 #define FORCED_LABEL(NODE) (LABEL_DECL_CHECK (NODE)->base.side_effects_flag)
1222 /* Nonzero means this expression is volatile in the C sense:
1223 its address should be of type `volatile WHATEVER *'.
1224 In other words, the declared item is volatile qualified.
1225 This is used in _DECL nodes and _REF nodes.
1226 On a FUNCTION_DECL node, this means the function does not
1227 return normally. This is the same effect as setting
1228 the attribute noreturn on the function in C.
1230 In a ..._TYPE node, means this type is volatile-qualified.
1231 But use TYPE_VOLATILE instead of this macro when the node is a type,
1232 because eventually we may make that a different bit.
1234 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1235 #define TREE_THIS_VOLATILE(NODE) ((NODE)->base.volatile_flag)
1237 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
1238 accessing the memory pointed to won't generate a trap. However,
1239 this only applies to an object when used appropriately: it doesn't
1240 mean that writing a READONLY mem won't trap. Similarly for
1241 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1243 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1244 (or slice of the array) always belongs to the range of the array.
1245 I.e. that the access will not trap, provided that the access to
1246 the base to the array will not trap. */
1247 #define TREE_THIS_NOTRAP(NODE) ((NODE)->base.nothrow_flag)
1249 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1250 nonzero means it may not be the lhs of an assignment.
1251 Nonzero in a FUNCTION_DECL means this function should be treated
1252 as "const" function (can only read its arguments). */
1253 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->base.readonly_flag)
1255 /* Value of expression is constant. Always on in all ..._CST nodes. May
1256 also appear in an expression or decl where the value is constant. */
1257 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->base.constant_flag)
1259 /* Nonzero if NODE, a type, has had its sizes gimplified. */
1260 #define TYPE_SIZES_GIMPLIFIED(NODE) \
1261 (TYPE_CHECK (NODE)->base.constant_flag)
1263 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1264 #define DECL_UNSIGNED(NODE) \
1265 (DECL_COMMON_CHECK (NODE)->base.unsigned_flag)
1267 /* In integral and pointer types, means an unsigned type. */
1268 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->base.unsigned_flag)
1270 /* Nonzero in a VAR_DECL or STRING_CST means assembler code has been written.
1271 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1272 This is interesting in an inline function, since it might not need
1273 to be compiled separately.
1274 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1275 if the sdb debugging info for the type has been written.
1276 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1277 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1279 #define TREE_ASM_WRITTEN(NODE) ((NODE)->base.asm_written_flag)
1281 /* Nonzero in a _DECL if the name is used in its scope.
1282 Nonzero in an expr node means inhibit warning if value is unused.
1283 In IDENTIFIER_NODEs, this means that some extern decl for this name
1285 In a BLOCK, this means that the block contains variables that are used. */
1286 #define TREE_USED(NODE) ((NODE)->base.used_flag)
1288 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1289 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1290 #define TREE_NOTHROW(NODE) ((NODE)->base.nothrow_flag)
1292 /* In a CALL_EXPR, means that it's safe to use the target of the call
1293 expansion as the return slot for a call that returns in memory. */
1294 #define CALL_EXPR_RETURN_SLOT_OPT(NODE) \
1295 (CALL_EXPR_CHECK (NODE)->base.private_flag)
1297 /* In a RESULT_DECL, PARM_DECL or VAR_DECL without TREE_STATIC, means that it is
1298 passed by invisible reference (and the TREE_TYPE is a pointer to the true
1300 #define DECL_BY_REFERENCE(NODE) (DECL_COMMON_CHECK (NODE)->base.private_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 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1506 element. INDEX can optionally design the position of VALUE: in arrays,
1507 it is the index where VALUE has to be placed; in structures, it is the
1508 FIELD_DECL of the member. */
1509 typedef struct GTY(()) constructor_elt_d {
1514 DEF_VEC_O(constructor_elt);
1515 DEF_VEC_ALLOC_O(constructor_elt,gc);
1517 struct GTY(()) tree_constructor {
1518 struct tree_common common;
1519 VEC(constructor_elt,gc) *elts;
1522 /* Define fields and accessors for some nodes that represent expressions. */
1524 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1525 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1526 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1527 && integer_zerop (TREE_OPERAND (NODE, 0)))
1529 /* In ordinary expression nodes. */
1530 #define TREE_OPERAND_LENGTH(NODE) tree_operand_length (NODE)
1531 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1533 /* In a tcc_vl_exp node, operand 0 is an INT_CST node holding the operand
1534 length. Its value includes the length operand itself; that is,
1535 the minimum valid length is 1.
1536 Note that we have to bypass the use of TREE_OPERAND to access
1537 that field to avoid infinite recursion in expanding the macros. */
1538 #define VL_EXP_OPERAND_LENGTH(NODE) \
1539 ((int)TREE_INT_CST_LOW (VL_EXP_CHECK (NODE)->exp.operands[0]))
1541 /* In a LOOP_EXPR node. */
1542 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1544 /* The source location of this expression. Non-tree_exp nodes such as
1545 decls and constants can be shared among multiple locations, so
1547 #define EXPR_LOCATION(NODE) (EXPR_P ((NODE)) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1548 #define SET_EXPR_LOCATION(NODE, LOCUS) EXPR_CHECK ((NODE))->exp.locus = (LOCUS)
1549 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1550 #define EXPR_LOCUS(NODE) (EXPR_P (NODE) \
1551 ? CONST_CAST (source_location *, &(NODE)->exp.locus) \
1552 : (source_location *) NULL)
1553 #define SET_EXPR_LOCUS(NODE, FROM) set_expr_locus ((NODE), (FROM))
1554 #define EXPR_FILENAME(NODE) LOCATION_FILE (EXPR_CHECK ((NODE))->exp.locus)
1555 #define EXPR_LINENO(NODE) LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1557 /* True if a tree is an expression or statement that can have a
1559 #define CAN_HAVE_LOCATION_P(NODE) (EXPR_P (NODE))
1561 extern void protected_set_expr_location (tree, location_t);
1563 /* In a TARGET_EXPR node. */
1564 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1565 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1566 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1568 /* DECL_EXPR accessor. This gives access to the DECL associated with
1569 the given declaration statement. */
1570 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1572 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1574 /* COMPOUND_LITERAL_EXPR accessors. */
1575 #define COMPOUND_LITERAL_EXPR_DECL_EXPR(NODE) \
1576 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
1577 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
1578 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_EXPR (NODE))
1580 /* SWITCH_EXPR accessors. These give access to the condition, body and
1581 original condition type (before any compiler conversions)
1582 of the switch statement, respectively. */
1583 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1584 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1585 #define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1587 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1588 of a case label, respectively. */
1589 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1590 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1591 #define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1593 /* The operands of a TARGET_MEM_REF. */
1594 #define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1595 #define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1596 #define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1597 #define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1598 #define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1599 #define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1601 /* The operands of a BIND_EXPR. */
1602 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1603 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1604 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1606 /* GOTO_EXPR accessor. This gives access to the label associated with
1607 a goto statement. */
1608 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1610 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1611 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1612 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1614 #define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1615 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1616 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1617 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1618 /* Nonzero if we want to create an ASM_INPUT instead of an
1619 ASM_OPERAND with no operands. */
1620 #define ASM_INPUT_P(NODE) (ASM_EXPR_CHECK (NODE)->base.static_flag)
1621 #define ASM_VOLATILE_P(NODE) (ASM_EXPR_CHECK (NODE)->base.public_flag)
1623 /* COND_EXPR accessors. */
1624 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1625 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1626 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1628 /* Accessors for the chains of recurrences. */
1629 #define CHREC_VAR(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 0)
1630 #define CHREC_LEFT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 1)
1631 #define CHREC_RIGHT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 2)
1632 #define CHREC_VARIABLE(NODE) TREE_INT_CST_LOW (CHREC_VAR (NODE))
1634 /* LABEL_EXPR accessor. This gives access to the label associated with
1635 the given label expression. */
1636 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1638 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1639 accessors for SSA operands. */
1641 /* CATCH_EXPR accessors. */
1642 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1643 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1645 /* EH_FILTER_EXPR accessors. */
1646 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1647 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1648 #define EH_FILTER_MUST_NOT_THROW(NODE) \
1649 (EH_FILTER_EXPR_CHECK (NODE)->base.static_flag)
1651 /* CHANGE_DYNAMIC_TYPE_EXPR accessors. */
1652 #define CHANGE_DYNAMIC_TYPE_NEW_TYPE(NODE) \
1653 TREE_OPERAND (CHANGE_DYNAMIC_TYPE_EXPR_CHECK (NODE), 0)
1654 #define CHANGE_DYNAMIC_TYPE_LOCATION(NODE) \
1655 TREE_OPERAND (CHANGE_DYNAMIC_TYPE_EXPR_CHECK (NODE), 1)
1657 /* OBJ_TYPE_REF accessors. */
1658 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1659 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1660 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1662 /* ASSERT_EXPR accessors. */
1663 #define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1664 #define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1666 /* CALL_EXPR accessors.
1668 #define CALL_EXPR_FN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 1)
1669 #define CALL_EXPR_STATIC_CHAIN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 2)
1670 #define CALL_EXPR_ARGS(NODE) call_expr_arglist (NODE)
1671 #define CALL_EXPR_ARG(NODE, I) TREE_OPERAND (CALL_EXPR_CHECK (NODE), (I) + 3)
1672 #define call_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
1674 /* CALL_EXPR_ARGP returns a pointer to the argument vector for NODE.
1675 We can't use &CALL_EXPR_ARG (NODE, 0) because that will complain if
1676 the argument count is zero when checking is enabled. Instead, do
1677 the pointer arithmetic to advance past the 3 fixed operands in a
1678 CALL_EXPR. That produces a valid pointer to just past the end of the
1679 operand array, even if it's not valid to dereference it. */
1680 #define CALL_EXPR_ARGP(NODE) \
1681 (&(TREE_OPERAND (CALL_EXPR_CHECK (NODE), 0)) + 3)
1683 /* OpenMP directive and clause accessors. */
1685 #define OMP_BODY(NODE) \
1686 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1687 #define OMP_CLAUSES(NODE) \
1688 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1690 #define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1691 #define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1693 #define OMP_TASK_BODY(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 0)
1694 #define OMP_TASK_CLAUSES(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 1)
1696 #define OMP_TASKREG_CHECK(NODE) TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_TASK)
1697 #define OMP_TASKREG_BODY(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 0)
1698 #define OMP_TASKREG_CLAUSES(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 1)
1700 #define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1701 #define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1702 #define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1703 #define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1704 #define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1705 #define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1707 #define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1708 #define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1710 #define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1712 #define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1713 #define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1715 #define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1717 #define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1719 #define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1720 #define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1722 #define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1723 #define OMP_CLAUSE_DECL(NODE) \
1724 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1725 OMP_CLAUSE_PRIVATE, \
1726 OMP_CLAUSE_COPYPRIVATE), 0)
1728 /* True on an OMP_SECTION statement that was the last lexical member.
1729 This status is meaningful in the implementation of lastprivate. */
1730 #define OMP_SECTION_LAST(NODE) \
1731 (OMP_SECTION_CHECK (NODE)->base.private_flag)
1733 /* True on an OMP_PARALLEL statement if it represents an explicit
1734 combined parallel work-sharing constructs. */
1735 #define OMP_PARALLEL_COMBINED(NODE) \
1736 (OMP_PARALLEL_CHECK (NODE)->base.private_flag)
1738 /* True on a PRIVATE clause if its decl is kept around for debugging
1739 information only and its DECL_VALUE_EXPR is supposed to point
1740 to what it has been remapped to. */
1741 #define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1742 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE)->base.public_flag)
1744 /* True on a PRIVATE clause if ctor needs access to outer region's
1746 #define OMP_CLAUSE_PRIVATE_OUTER_REF(NODE) \
1747 TREE_PRIVATE (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1749 /* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1750 decl is present in the chain. */
1751 #define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1752 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE)->base.public_flag)
1753 #define OMP_CLAUSE_LASTPRIVATE_STMT(NODE) \
1754 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, \
1755 OMP_CLAUSE_LASTPRIVATE),\
1757 #define OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ(NODE) \
1758 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1760 #define OMP_CLAUSE_IF_EXPR(NODE) \
1761 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1762 #define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1763 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1764 #define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1765 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1767 #define OMP_CLAUSE_COLLAPSE_EXPR(NODE) \
1768 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 0)
1769 #define OMP_CLAUSE_COLLAPSE_ITERVAR(NODE) \
1770 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 1)
1771 #define OMP_CLAUSE_COLLAPSE_COUNT(NODE) \
1772 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 2)
1774 #define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1775 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1776 #define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1777 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1778 #define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1779 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1780 #define OMP_CLAUSE_REDUCTION_GIMPLE_INIT(NODE) \
1781 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1782 #define OMP_CLAUSE_REDUCTION_GIMPLE_MERGE(NODE) \
1783 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_merge
1784 #define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1785 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1787 enum omp_clause_schedule_kind
1789 OMP_CLAUSE_SCHEDULE_STATIC,
1790 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1791 OMP_CLAUSE_SCHEDULE_GUIDED,
1792 OMP_CLAUSE_SCHEDULE_AUTO,
1793 OMP_CLAUSE_SCHEDULE_RUNTIME
1796 #define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1797 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1799 enum omp_clause_default_kind
1801 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1802 OMP_CLAUSE_DEFAULT_SHARED,
1803 OMP_CLAUSE_DEFAULT_NONE,
1804 OMP_CLAUSE_DEFAULT_PRIVATE,
1805 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
1808 #define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1809 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1811 struct GTY(()) tree_exp {
1812 struct tree_common common;
1815 tree GTY ((special ("tree_exp"),
1816 desc ("TREE_CODE ((tree) &%0)")))
1820 /* SSA_NAME accessors. */
1822 /* Returns the variable being referenced. Once released, this is the
1823 only field that can be relied upon. */
1824 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1826 /* Returns the statement which defines this SSA name. */
1827 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->ssa_name.def_stmt
1829 /* Returns the SSA version number of this SSA name. Note that in
1830 tree SSA, version numbers are not per variable and may be recycled. */
1831 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1833 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1834 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1836 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1837 SSA_NAME_CHECK (NODE)->base.asm_written_flag
1839 /* Nonzero if this SSA_NAME expression is currently on the free list of
1840 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1841 has no meaning for an SSA_NAME. */
1842 #define SSA_NAME_IN_FREE_LIST(NODE) \
1843 SSA_NAME_CHECK (NODE)->base.nothrow_flag
1845 /* Nonzero if this SSA_NAME is the default definition for the
1846 underlying symbol. A default SSA name is created for symbol S if
1847 the very first reference to S in the function is a read operation.
1848 Default definitions are always created by an empty statement and
1849 belong to no basic block. */
1850 #define SSA_NAME_IS_DEFAULT_DEF(NODE) \
1851 SSA_NAME_CHECK (NODE)->base.default_def_flag
1853 /* Attributes for SSA_NAMEs for pointer-type variables. */
1854 #define SSA_NAME_PTR_INFO(N) \
1855 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1857 /* Get the value of this SSA_NAME, if available. */
1858 #define SSA_NAME_VALUE(N) \
1859 SSA_NAME_CHECK (N)->ssa_name.value_handle
1861 #ifndef _TREE_FLOW_H
1862 struct ptr_info_def;
1867 /* Immediate use linking structure. This structure is used for maintaining
1868 a doubly linked list of uses of an SSA_NAME. */
1869 typedef struct GTY(()) ssa_use_operand_d {
1870 struct ssa_use_operand_d* GTY((skip(""))) prev;
1871 struct ssa_use_operand_d* GTY((skip(""))) next;
1872 /* Immediate uses for a given SSA name are maintained as a cyclic
1873 list. To recognize the root of this list, the location field
1874 needs to point to the original SSA name. Since statements and
1875 SSA names are of different data types, we need this union. See
1876 the explanation in struct immediate_use_iterator_d. */
1877 union { gimple stmt; tree ssa_name; } GTY((skip(""))) loc;
1878 tree *GTY((skip(""))) use;
1879 } ssa_use_operand_t;
1881 /* Return the immediate_use information for an SSA_NAME. */
1882 #define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1884 struct GTY(()) tree_ssa_name {
1885 struct tree_common common;
1887 /* _DECL wrapped by this SSA name. */
1890 /* Statement that defines this SSA name. */
1893 /* SSA version number. */
1894 unsigned int version;
1896 /* Pointer attributes used for alias analysis. */
1897 struct ptr_info_def *ptr_info;
1899 /* Value for SSA name used by various passes.
1901 Right now only invariants are allowed to persist beyond a pass in
1902 this field; in the future we will allow VALUE_HANDLEs to persist
1906 /* Immediate uses list for this SSA_NAME. */
1907 struct ssa_use_operand_d imm_uses;
1910 struct GTY(()) phi_arg_d {
1911 /* imm_use MUST be the first element in struct because we do some
1912 pointer arithmetic with it. See phi_arg_index_from_use. */
1913 struct ssa_use_operand_d imm_use;
1918 #define OMP_CLAUSE_CODE(NODE) \
1919 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1921 #define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1922 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1924 #define OMP_CLAUSE_CODE(NODE) \
1925 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1927 #define OMP_CLAUSE_OPERAND(NODE, I) \
1928 OMP_CLAUSE_ELT_CHECK (NODE, I)
1930 struct GTY(()) tree_omp_clause {
1931 struct tree_common common;
1932 enum omp_clause_code code;
1933 union omp_clause_subcode {
1934 enum omp_clause_default_kind default_kind;
1935 enum omp_clause_schedule_kind schedule_kind;
1936 enum tree_code reduction_code;
1937 } GTY ((skip)) subcode;
1939 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1941 gimple_seq gimple_reduction_init;
1942 gimple_seq gimple_reduction_merge;
1944 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1948 struct varray_head_tag;
1950 /* In a BLOCK node. */
1951 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1952 #define BLOCK_NONLOCALIZED_VARS(NODE) (BLOCK_CHECK (NODE)->block.nonlocalized_vars)
1953 #define BLOCK_NUM_NONLOCALIZED_VARS(NODE) VEC_length (tree, BLOCK_NONLOCALIZED_VARS (NODE))
1954 #define BLOCK_NONLOCALIZED_VAR(NODE,N) VEC_index (tree, BLOCK_NONLOCALIZED_VARS (NODE), N)
1955 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1956 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1957 /* Note: when changing this, make sure to find the places
1958 that use chainon or nreverse. */
1959 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1960 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1961 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1963 /* An index number for this block. These values are not guaranteed to
1964 be unique across functions -- whether or not they are depends on
1965 the debugging output format in use. */
1966 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1968 /* If block reordering splits a lexical block into discontiguous
1969 address ranges, we'll make a copy of the original block.
1971 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1972 In that case, we have one source block that has been replicated
1973 (through inlining or unrolling) into many logical blocks, and that
1974 these logical blocks have different physical variables in them.
1976 In this case, we have one logical block split into several
1977 non-contiguous address ranges. Most debug formats can't actually
1978 represent this idea directly, so we fake it by creating multiple
1979 logical blocks with the same variables in them. However, for those
1980 that do support non-contiguous regions, these allow the original
1981 logical block to be reconstructed, along with the set of address
1984 One of the logical block fragments is arbitrarily chosen to be
1985 the ORIGIN. The other fragments will point to the origin via
1986 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1987 be null. The list of fragments will be chained through
1988 BLOCK_FRAGMENT_CHAIN from the origin. */
1990 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1991 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1993 /* For an inlined function, this gives the location where it was called
1994 from. This is only set in the top level block, which corresponds to the
1995 inlined function scope. This is used in the debug output routines. */
1997 #define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1999 struct GTY(()) tree_block {
2000 struct tree_common common;
2002 unsigned abstract_flag : 1;
2003 unsigned block_num : 31;
2008 VEC(tree,gc) *nonlocalized_vars;
2012 tree abstract_origin;
2013 tree fragment_origin;
2014 tree fragment_chain;
2017 /* Define fields and accessors for nodes representing data types. */
2019 /* See tree.def for documentation of the use of these fields.
2020 Look at the documentation of the various ..._TYPE tree codes.
2022 Note that the type.values, type.minval, and type.maxval fields are
2023 overloaded and used for different macros in different kinds of types.
2024 Each macro must check to ensure the tree node is of the proper kind of
2025 type. Note also that some of the front-ends also overload these fields,
2026 so they must be checked as well. */
2028 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
2029 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
2030 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
2031 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
2032 #define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
2033 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
2034 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
2035 #define TYPE_ORIG_SIZE_TYPE(NODE) \
2036 (INTEGER_TYPE_CHECK (NODE)->type.values \
2037 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
2038 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
2039 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
2040 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
2041 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
2042 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
2043 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
2044 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
2045 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
2046 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
2047 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
2048 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
2049 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
2050 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
2051 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
2052 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
2053 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
2054 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
2055 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
2056 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
2058 /* Vector types need to check target flags to determine type. */
2059 extern enum machine_mode vector_type_mode (const_tree);
2060 #define TYPE_MODE(NODE) \
2061 (TREE_CODE (TYPE_CHECK (NODE)) == VECTOR_TYPE \
2062 ? vector_type_mode (NODE) : (NODE)->type.mode)
2063 #define SET_TYPE_MODE(NODE, MODE) \
2064 (TYPE_CHECK (NODE)->type.mode = (MODE))
2066 /* The "canonical" type for this type node, which can be used to
2067 compare the type for equality with another type. If two types are
2068 equal (based on the semantics of the language), then they will have
2069 equivalent TYPE_CANONICAL entries.
2071 As a special case, if TYPE_CANONICAL is NULL_TREE, then it cannot
2072 be used for comparison against other types. Instead, the type is
2073 said to require structural equality checks, described in
2074 TYPE_STRUCTURAL_EQUALITY_P. */
2075 #define TYPE_CANONICAL(NODE) (TYPE_CHECK (NODE)->type.canonical)
2076 /* Indicates that the type node requires structural equality
2077 checks. The compiler will need to look at the composition of the
2078 type to determine whether it is equal to another type, rather than
2079 just comparing canonical type pointers. For instance, we would need
2080 to look at the return and parameter types of a FUNCTION_TYPE
2082 #define TYPE_STRUCTURAL_EQUALITY_P(NODE) (TYPE_CANONICAL (NODE) == NULL_TREE)
2083 /* Sets the TYPE_CANONICAL field to NULL_TREE, indicating that the
2084 type node requires structural equality. */
2085 #define SET_TYPE_STRUCTURAL_EQUALITY(NODE) (TYPE_CANONICAL (NODE) = NULL_TREE)
2086 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
2087 #define TYPE_IBIT(NODE) (GET_MODE_IBIT (TYPE_MODE (NODE)))
2088 #define TYPE_FBIT(NODE) (GET_MODE_FBIT (TYPE_MODE (NODE)))
2090 /* For a VECTOR_TYPE node, this describes a different type which is emitted
2091 in the debugging output. We use this to describe a vector as a
2092 structure containing an array. */
2093 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
2095 /* For record and union types, information about this type, as a base type
2097 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2099 /* For non record and union types, used in a language-dependent way. */
2100 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2102 /* The (language-specific) typed-based alias set for this type.
2103 Objects whose TYPE_ALIAS_SETs are different cannot alias each
2104 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
2105 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
2106 type can alias objects of any type. */
2107 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
2109 /* Nonzero iff the typed-based alias set for this type has been
2111 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
2113 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
2115 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
2117 /* The alignment necessary for objects of this type.
2118 The value is an int, measured in bits. */
2119 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
2121 /* 1 if the alignment for this type was requested by "aligned" attribute,
2122 0 if it is the default for this type. */
2123 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
2125 /* The alignment for NODE, in bytes. */
2126 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
2128 /* If your language allows you to declare types, and you want debug info
2129 for them, then you need to generate corresponding TYPE_DECL nodes.
2130 These "stub" TYPE_DECL nodes have no name, and simply point at the
2131 type node. You then set the TYPE_STUB_DECL field of the type node
2132 to point back at the TYPE_DECL node. This allows the debug routines
2133 to know that the two nodes represent the same type, so that we only
2134 get one debug info record for them. */
2135 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
2137 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
2138 has BLKmode only because it lacks the alignment requirement for
2140 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
2142 /* In an INTEGER_TYPE, it means the type represents a size. We use
2143 this both for validity checking and to permit optimizations that
2144 are unsafe for other types. Note that the C `size_t' type should
2145 *not* have this flag set. The `size_t' type is simply a typedef
2146 for an ordinary integer type that happens to be the type of an
2147 expression returned by `sizeof'; `size_t' has no special
2148 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
2149 always actual sizes. */
2150 #define TYPE_IS_SIZETYPE(NODE) \
2151 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
2153 /* Nonzero in a type considered volatile as a whole. */
2154 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->base.volatile_flag)
2156 /* Means this type is const-qualified. */
2157 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->base.readonly_flag)
2159 /* If nonzero, this type is `restrict'-qualified, in the C sense of
2161 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2163 /* There is a TYPE_QUAL value for each type qualifier. They can be
2164 combined by bitwise-or to form the complete set of qualifiers for a
2167 #define TYPE_UNQUALIFIED 0x0
2168 #define TYPE_QUAL_CONST 0x1
2169 #define TYPE_QUAL_VOLATILE 0x2
2170 #define TYPE_QUAL_RESTRICT 0x4
2172 /* The set of type qualifiers for this type. */
2173 #define TYPE_QUALS(NODE) \
2174 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2175 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2176 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2178 /* These flags are available for each language front end to use internally. */
2179 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2180 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2181 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2182 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2183 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2184 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2185 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2187 /* Used to keep track of visited nodes in tree traversals. This is set to
2188 0 by copy_node and make_node. */
2189 #define TREE_VISITED(NODE) ((NODE)->base.visited)
2191 /* If set in an ARRAY_TYPE, indicates a string type (for languages
2192 that distinguish string from array of char).
2193 If set in a INTEGER_TYPE, indicates a character type. */
2194 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2196 /* If non-NULL, this is an upper bound of the size (in bytes) of an
2197 object of the given ARRAY_TYPE. This allows temporaries to be
2199 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2200 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2202 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2203 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2204 (((unsigned HOST_WIDE_INT) 1) \
2205 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2207 /* Set precision to n when we have 2^n sub-parts of the vector. */
2208 #define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2209 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2211 /* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
2212 uses are to be substituted for uses of the TREE_CHAINed identifier. */
2213 #define TYPE_VECTOR_OPAQUE(NODE) \
2214 (VECTOR_TYPE_CHECK (NODE)->base.deprecated_flag)
2216 /* Indicates that objects of this type must be initialized by calling a
2217 function when they are created. */
2218 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
2219 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2221 /* Indicates that objects of this type (a UNION_TYPE), should be passed
2222 the same way that the first union alternative would be passed. */
2223 #define TYPE_TRANSPARENT_UNION(NODE) \
2224 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2226 /* For an ARRAY_TYPE, indicates that it is not permitted to take the
2227 address of a component of the type. This is the counterpart of
2228 DECL_NONADDRESSABLE_P for arrays, see the definition of this flag. */
2229 #define TYPE_NONALIASED_COMPONENT(NODE) \
2230 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2232 /* Indicated that objects of this type should be laid out in as
2233 compact a way as possible. */
2234 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
2236 /* Used by type_contains_placeholder_p to avoid recomputation.
2237 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2238 this field directly. */
2239 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2240 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2244 struct GTY(()) tree_type {
2245 struct tree_common common;
2252 unsigned int precision : 9;
2253 ENUM_BITFIELD(machine_mode) mode : 7;
2255 unsigned string_flag : 1;
2256 unsigned no_force_blk_flag : 1;
2257 unsigned needs_constructing_flag : 1;
2258 unsigned transparent_union_flag : 1;
2259 unsigned packed_flag : 1;
2260 unsigned restrict_flag : 1;
2261 unsigned contains_placeholder_bits : 2;
2263 unsigned lang_flag_0 : 1;
2264 unsigned lang_flag_1 : 1;
2265 unsigned lang_flag_2 : 1;
2266 unsigned lang_flag_3 : 1;
2267 unsigned lang_flag_4 : 1;
2268 unsigned lang_flag_5 : 1;
2269 unsigned lang_flag_6 : 1;
2270 unsigned user_align : 1;
2273 alias_set_type alias_set;
2276 union tree_type_symtab {
2277 int GTY ((tag ("0"))) address;
2278 const char * GTY ((tag ("1"))) pointer;
2279 struct die_struct * GTY ((tag ("2"))) die;
2280 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2281 descbits ("2"))) symtab;
2290 /* Points to a structure whose details depend on the language in use. */
2291 struct lang_type *lang_specific;
2294 /* Define accessor macros for information about type inheritance
2297 A "basetype" means a particular usage of a data type for inheritance
2298 in another type. Each such basetype usage has its own "binfo"
2299 object to describe it. The binfo object is a TREE_VEC node.
2301 Inheritance is represented by the binfo nodes allocated for a
2302 given type. For example, given types C and D, such that D is
2303 inherited by C, 3 binfo nodes will be allocated: one for describing
2304 the binfo properties of C, similarly one for D, and one for
2305 describing the binfo properties of D as a base type for C.
2306 Thus, given a pointer to class C, one can get a pointer to the binfo
2307 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2309 /* BINFO specific flags. */
2311 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
2312 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->base.static_flag)
2314 /* Flags for language dependent use. */
2315 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2316 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2317 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2318 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2319 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2320 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2321 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2323 /* The actual data type node being inherited in this basetype. */
2324 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2326 /* The offset where this basetype appears in its containing type.
2327 BINFO_OFFSET slot holds the offset (in bytes)
2328 from the base of the complete object to the base of the part of the
2329 object that is allocated on behalf of this `type'.
2330 This is always 0 except when there is multiple inheritance. */
2332 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2333 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2335 /* The virtual function table belonging to this basetype. Virtual
2336 function tables provide a mechanism for run-time method dispatching.
2337 The entries of a virtual function table are language-dependent. */
2339 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2341 /* The virtual functions in the virtual function table. This is
2342 a TREE_LIST that is used as an initial approximation for building
2343 a virtual function table for this basetype. */
2344 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2346 /* A vector of binfos for the direct basetypes inherited by this
2349 If this basetype describes type D as inherited in C, and if the
2350 basetypes of D are E and F, then this vector contains binfos for
2351 inheritance of E and F by C. */
2352 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2354 /* The number of basetypes for NODE. */
2355 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2357 /* Accessor macro to get to the Nth base binfo of this binfo. */
2358 #define BINFO_BASE_BINFO(NODE,N) \
2359 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2360 #define BINFO_BASE_ITERATE(NODE,N,B) \
2361 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2362 #define BINFO_BASE_APPEND(NODE,T) \
2363 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2365 /* For a BINFO record describing a virtual base class, i.e., one where
2366 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2367 base. The actual contents are language-dependent. In the C++
2368 front-end this field is an INTEGER_CST giving an offset into the
2369 vtable where the offset to the virtual base can be found. */
2370 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2372 /* Indicates the accesses this binfo has to its bases. The values are
2373 access_public_node, access_protected_node or access_private_node.
2374 If this array is not present, public access is implied. */
2375 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2377 #define BINFO_BASE_ACCESS(NODE,N) \
2378 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2379 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2380 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2382 /* The index in the VTT where this subobject's sub-VTT can be found.
2383 NULL_TREE if there is no sub-VTT. */
2384 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2386 /* The index in the VTT where the vptr for this subobject can be
2387 found. NULL_TREE if there is no secondary vptr in the VTT. */
2388 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2390 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2391 inheriting this base for non-virtual bases. For virtual bases it
2392 points either to the binfo for which this is a primary binfo, or to
2393 the binfo of the most derived type. */
2394 #define BINFO_INHERITANCE_CHAIN(NODE) \
2395 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2397 struct GTY (()) tree_binfo {
2398 struct tree_common common;
2404 VEC(tree,gc) *base_accesses;
2410 VEC(tree,none) base_binfos;
2414 /* Define fields and accessors for nodes representing declared names. */
2416 /* Nonzero if DECL represents a variable for the SSA passes. */
2417 #define SSA_VAR_P(DECL) \
2418 (TREE_CODE (DECL) == VAR_DECL \
2419 || TREE_CODE (DECL) == PARM_DECL \
2420 || TREE_CODE (DECL) == RESULT_DECL \
2421 || (TREE_CODE (DECL) == SSA_NAME \
2422 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2423 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2424 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
2429 /* Enumerate visibility settings. */
2430 #ifndef SYMBOL_VISIBILITY_DEFINED
2431 #define SYMBOL_VISIBILITY_DEFINED
2432 enum symbol_visibility
2435 VISIBILITY_PROTECTED,
2444 /* This is the name of the object as written by the user.
2445 It is an IDENTIFIER_NODE. */
2446 #define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2448 /* Every ..._DECL node gets a unique number. */
2449 #define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2451 /* These two fields describe where in the source code the declaration
2452 was. If the declaration appears in several places (as for a C
2453 function that is declared first and then defined later), this
2454 information should refer to the definition. */
2455 #define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2456 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2457 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2458 #define DECL_IS_BUILTIN(DECL) \
2459 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2461 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2462 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2463 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2464 points to either the FUNCTION_DECL for the containing function,
2465 the RECORD_TYPE or UNION_TYPE for the containing type, or
2466 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2468 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2469 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2470 struct GTY(()) tree_decl_minimal {
2471 struct tree_common common;
2479 /* For any sort of a ..._DECL node, this points to the original (abstract)
2480 decl node which this decl is an instance of, or else it is NULL indicating
2481 that this decl is not an instance of some other decl. For example,
2482 in a nested declaration of an inline function, this points back to the
2484 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2486 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2487 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2488 #define DECL_ORIGIN(NODE) \
2489 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2491 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2492 inline instance of some original (abstract) decl from an inline function;
2493 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2494 nodes can also have their abstract origin set to themselves. */
2495 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2496 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2498 /* In a DECL this is the field where attributes are stored. */
2499 #define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2501 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
2502 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2503 For a VAR_DECL, holds the initial value.
2504 For a PARM_DECL, used for DECL_ARG_TYPE--default
2505 values for parameters are encoded in the type of the function,
2506 not in the PARM_DECL slot.
2507 For a FIELD_DECL, this is used for enumeration values and the C
2508 frontend uses it for temporarily storing bitwidth of bitfields.
2510 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2511 #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2513 /* Holds the size of the datum, in bits, as a tree expression.
2514 Need not be constant. */
2515 #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2516 /* Likewise for the size in bytes. */
2517 #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2518 /* Holds the alignment required for the datum, in bits. */
2519 #define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.align)
2520 /* The alignment of NODE, in bytes. */
2521 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2522 /* Set if the alignment of this DECL has been set by the user, for
2523 example with an 'aligned' attribute. */
2524 #define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.user_align)
2525 /* Holds the machine mode corresponding to the declaration of a variable or
2526 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2528 #define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2530 /* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2531 operation it is. Note, however, that this field is overloaded, with
2532 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2533 checked before any access to the former. */
2534 #define DECL_FUNCTION_CODE(NODE) \
2535 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_code)
2536 #define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2537 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2539 /* Nonzero for a given ..._DECL node means that the name of this node should
2540 be ignored for symbolic debug purposes. */
2541 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2543 /* Nonzero for a given ..._DECL node means that this node represents an
2544 "abstract instance" of the given declaration (e.g. in the original
2545 declaration of an inline function). When generating symbolic debugging
2546 information, we mustn't try to generate any address information for nodes
2547 marked as "abstract instances" because we don't actually generate
2548 any code or allocate any data space for such instances. */
2549 #define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2551 /* Language-specific decl information. */
2552 #define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2554 /* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2555 do not allocate storage, and refer to a definition elsewhere. Note that
2556 this does not necessarily imply the entity represented by NODE
2557 has no program source-level definition in this translation unit. For
2558 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2559 DECL_EXTERNAL may be true simultaneously; that can be the case for
2560 a C99 "extern inline" function. */
2561 #define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_2)
2563 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2564 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2566 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2568 Also set in some languages for variables, etc., outside the normal
2569 lexical scope, such as class instance variables. */
2570 #define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2572 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2573 Used in FIELD_DECLs for vtable pointers.
2574 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2575 #define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2577 /* Used to indicate that this DECL represents a compiler-generated entity. */
2578 #define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2580 /* Additional flags for language-specific uses. */
2581 #define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2582 #define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2583 #define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2584 #define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2585 #define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2586 #define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2587 #define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2588 #define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2590 /* Used to indicate an alias set for the memory pointed to by this
2591 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2592 pointer (or reference) type. */
2593 #define DECL_POINTER_ALIAS_SET(NODE) \
2594 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2596 /* Nonzero if an alias set has been assigned to this declaration. */
2597 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2598 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2600 /* Nonzero for a decl which is at file scope. */
2601 #define DECL_FILE_SCOPE_P(EXP) \
2602 (! DECL_CONTEXT (EXP) \
2603 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2605 /* Nonzero for a decl that is decorated using attribute used.
2606 This indicates compiler tools that this decl needs to be preserved. */
2607 #define DECL_PRESERVE_P(DECL) \
2608 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2610 /* For function local variables of COMPLEX and VECTOR types,
2611 indicates that the variable is not aliased, and that all
2612 modifications to the variable have been adjusted so that
2613 they are killing assignments. Thus the variable may now
2614 be treated as a GIMPLE register, and use real instead of
2615 virtual ops in SSA form. */
2616 #define DECL_GIMPLE_REG_P(DECL) \
2617 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2619 /* For a DECL with pointer type, this is set if Type Based Alias
2620 Analysis should not be applied to this DECL. */
2621 #define DECL_NO_TBAA_P(DECL) \
2622 DECL_COMMON_CHECK (DECL)->decl_common.no_tbaa_flag
2624 struct GTY(()) tree_decl_common {
2625 struct tree_decl_minimal common;
2628 ENUM_BITFIELD(machine_mode) mode : 8;
2630 unsigned nonlocal_flag : 1;
2631 unsigned virtual_flag : 1;
2632 unsigned ignored_flag : 1;
2633 unsigned abstract_flag : 1;
2634 unsigned artificial_flag : 1;
2635 unsigned user_align : 1;
2636 unsigned preserve_flag: 1;
2637 unsigned debug_expr_is_from : 1;
2639 unsigned lang_flag_0 : 1;
2640 unsigned lang_flag_1 : 1;
2641 unsigned lang_flag_2 : 1;
2642 unsigned lang_flag_3 : 1;
2643 unsigned lang_flag_4 : 1;
2644 unsigned lang_flag_5 : 1;
2645 unsigned lang_flag_6 : 1;
2646 unsigned lang_flag_7 : 1;
2648 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2649 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2650 unsigned decl_flag_0 : 1;
2651 /* In FIELD_DECL, this is DECL_PACKED. */
2652 unsigned decl_flag_1 : 1;
2653 /* In FIELD_DECL, this is DECL_BIT_FIELD
2654 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2655 In TYPE_DECL, this is TYPE_DECL_SUPRESS_DEBUG. */
2656 unsigned decl_flag_2 : 1;
2657 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2658 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR. */
2659 unsigned decl_flag_3 : 1;
2660 /* Logically, these two would go in a theoretical base shared by var and
2662 unsigned gimple_reg_flag : 1;
2663 /* In a DECL with pointer type, set if no TBAA should be done. */
2664 unsigned no_tbaa_flag : 1;
2665 /* Padding so that 'off_align' can be on a 32-bit boundary. */
2666 unsigned decl_common_unused : 2;
2668 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
2669 unsigned int off_align : 8;
2674 tree abstract_origin;
2676 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
2679 alias_set_type pointer_alias_set;
2680 /* Points to a structure whose details depend on the language in use. */
2681 struct lang_decl *lang_specific;
2684 extern tree decl_value_expr_lookup (tree);
2685 extern void decl_value_expr_insert (tree, tree);
2687 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2688 if transformations have made this more complicated than evaluating the
2689 decl itself. This should only be used for debugging; once this field has
2690 been set, the decl itself may not legitimately appear in the function. */
2691 #define DECL_HAS_VALUE_EXPR_P(NODE) \
2692 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_3)
2693 #define DECL_VALUE_EXPR(NODE) \
2694 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2695 #define SET_DECL_VALUE_EXPR(NODE, VAL) \
2696 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2698 /* Holds the RTL expression for the value of a variable or function.
2699 This value can be evaluated lazily for functions, variables with
2700 static storage duration, and labels. */
2701 #define DECL_RTL(NODE) \
2702 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2703 ? (NODE)->decl_with_rtl.rtl \
2704 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2706 /* Set the DECL_RTL for NODE to RTL. */
2707 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2709 /* Returns nonzero if NODE is a tree node that can contain RTL. */
2710 #define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2712 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
2713 #define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2715 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2716 NODE1, it will not be set for NODE2; this is a lazy copy. */
2717 #define COPY_DECL_RTL(NODE1, NODE2) \
2718 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2720 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2721 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2723 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2724 #define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2726 struct GTY(()) tree_decl_with_rtl {
2727 struct tree_decl_common common;
2731 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
2732 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2733 of the structure. */
2734 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2736 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2737 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2738 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2739 natural alignment of the field's type). */
2740 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2742 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
2743 if so, the type that was originally specified for it.
2744 TREE_TYPE may have been modified (in finish_struct). */
2745 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2747 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2748 if nonzero, indicates that the field occupies the type. */
2749 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2751 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2752 DECL_FIELD_OFFSET which are known to be always zero.
2753 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2755 #define DECL_OFFSET_ALIGN(NODE) \
2756 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.off_align)
2758 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2759 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
2760 (FIELD_DECL_CHECK (NODE)->decl_common.off_align = exact_log2 ((X) & -(X)))
2761 /* 1 if the alignment for this type was requested by "aligned" attribute,
2762 0 if it is the default for this type. */
2764 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2765 which this FIELD_DECL is defined. This information is needed when
2766 writing debugging information about vfield and vbase decls for C++. */
2767 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2769 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2770 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2772 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2774 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2776 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2777 this component. This makes it possible for Type-Based Alias Analysis
2778 to disambiguate accesses to this field with indirect accesses using
2781 struct S { int i; } s;
2784 If the flag is set on 'i', TBAA computes that s.i and *p never conflict.
2786 From the implementation's viewpoint, the alias set of the type of the
2787 field 'i' (int) will not be recorded as a subset of that of the type of
2788 's' (struct S) in record_component_aliases. The counterpart is that
2789 accesses to s.i must not be given the alias set of the type of 'i'
2790 (int) but instead directly that of the type of 's' (struct S). */
2791 #define DECL_NONADDRESSABLE_P(NODE) \
2792 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_3)
2794 struct GTY(()) tree_field_decl {
2795 struct tree_decl_common common;
2798 tree bit_field_type;
2805 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2806 dense, unique within any one function, and may be used to index arrays.
2807 If the value is -1, then no UID has been assigned. */
2808 #define LABEL_DECL_UID(NODE) \
2809 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2811 /* In LABEL_DECL nodes, nonzero means that an error message about
2812 jumping into such a binding contour has been printed for this label. */
2813 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2815 struct GTY(()) tree_label_decl {
2816 struct tree_decl_with_rtl common;
2819 struct GTY(()) tree_result_decl {
2820 struct tree_decl_with_rtl common;
2823 struct GTY(()) tree_const_decl {
2824 struct tree_decl_with_rtl common;
2827 /* For a PARM_DECL, records the data type used to pass the argument,
2828 which may be different from the type seen in the program. */
2829 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2831 /* For PARM_DECL, holds an RTL for the stack slot or register
2832 where the data was actually passed. */
2833 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2835 struct GTY(()) tree_parm_decl {
2836 struct tree_decl_with_rtl common;
2841 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2842 this variable in a BIND_EXPR. */
2843 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2844 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2846 /* Used to indicate that the linkage status of this DECL is not yet known,
2847 so it should not be output now. */
2848 #define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2850 /* Nonzero for a given ..._DECL node means that no warnings should be
2851 generated just because this node is unused. */
2852 #define DECL_IN_SYSTEM_HEADER(NODE) \
2853 (in_system_header_at (DECL_SOURCE_LOCATION (NODE)))
2855 /* Used to indicate that this DECL has weak linkage. */
2856 #define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2858 /* Used to indicate that the DECL is a dllimport. */
2859 #define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2861 /* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2862 based on a variable with a restrict qualified type. If it is,
2863 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2866 #define DECL_BASED_ON_RESTRICT_P(NODE) \
2867 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2868 #define DECL_GET_RESTRICT_BASE(NODE) \
2869 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2870 #define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2871 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2873 extern tree decl_restrict_base_lookup (tree);
2874 extern void decl_restrict_base_insert (tree, tree);
2876 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2877 not be put out unless it is needed in this translation unit.
2878 Entities like this are shared across translation units (like weak
2879 entities), but are guaranteed to be generated by any translation
2880 unit that needs them, and therefore need not be put out anywhere
2881 where they are not needed. DECL_COMDAT is just a hint to the
2882 back-end; it is up to front-ends which set this flag to ensure
2883 that there will never be any harm, other than bloat, in putting out
2884 something which is DECL_COMDAT. */
2885 #define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2887 /* A replaceable function is one which may be replaced at link-time
2888 with an entirely different definition, provided that the
2889 replacement has the same type. For example, functions declared
2890 with __attribute__((weak)) on most systems are replaceable.
2892 COMDAT functions are not replaceable, since all definitions of the
2893 function must be equivalent. It is important that COMDAT functions
2894 not be treated as replaceable so that use of C++ template
2895 instantiations is not penalized.
2897 For example, DECL_REPLACEABLE is used to determine whether or not a
2898 function (including a template instantiation) which is not
2899 explicitly declared "inline" can be inlined. If the function is
2900 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2901 implementation chosen at link-time may be different. However, a
2902 function that is not DECL_REPLACEABLE can be inlined, since all
2903 versions of the function will be functionally identical. */
2904 #define DECL_REPLACEABLE_P(NODE) \
2905 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2907 /* The name of the object as the assembler will see it (but before any
2908 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2909 as DECL_NAME. It is an IDENTIFIER_NODE. */
2910 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2912 /* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2913 This is true of all DECL nodes except FIELD_DECL. */
2914 #define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2915 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2917 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2918 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2920 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2921 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2923 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2924 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2925 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2927 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2928 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2929 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2930 semantics of using this macro, are different than saying:
2932 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2934 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2936 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2937 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2938 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2939 DECL_ASSEMBLER_NAME (DECL1)) \
2942 /* Records the section name in a section attribute. Used to pass
2943 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2944 #define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2946 /* Value of the decls's visibility attribute */
2947 #define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2949 /* Nonzero means that the decl had its visibility specified rather than
2951 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2953 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2954 multiple translation units should be merged. */
2955 #define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2957 struct GTY(()) tree_decl_with_vis {
2958 struct tree_decl_with_rtl common;
2959 tree assembler_name;
2962 /* Belong to VAR_DECL exclusively. */
2963 unsigned defer_output:1;
2964 unsigned hard_register:1;
2965 unsigned thread_local:1;
2966 unsigned common_flag:1;
2967 unsigned in_text_section : 1;
2968 unsigned dllimport_flag : 1;
2969 unsigned based_on_restrict_p : 1;
2970 /* Used by C++. Might become a generic decl flag. */
2971 unsigned shadowed_for_var_p : 1;
2973 /* Don't belong to VAR_DECL exclusively. */
2974 unsigned weak_flag:1;
2975 unsigned seen_in_bind_expr : 1;
2976 unsigned comdat_flag : 1;
2977 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2978 unsigned visibility_specified : 1;
2979 /* Belong to FUNCTION_DECL exclusively. */
2980 unsigned one_only : 1;
2981 unsigned init_priority_p:1;
2983 /* Belongs to VAR_DECL exclusively. */
2984 ENUM_BITFIELD(tls_model) tls_model : 3;
2985 /* 13 unused bits. */
2988 /* In a VAR_DECL that's static,
2989 nonzero if the space is in the text section. */
2990 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2992 /* Nonzero for a given ..._DECL node means that this node should be
2993 put in .common, if possible. If a DECL_INITIAL is given, and it
2994 is not error_mark_node, then the decl cannot be put in .common. */
2995 #define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2997 /* In a VAR_DECL, nonzero if the decl is a register variable with
2998 an explicit asm specification. */
2999 #define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
3001 extern tree decl_debug_expr_lookup (tree);
3002 extern void decl_debug_expr_insert (tree, tree);
3003 /* For VAR_DECL, this is set to either an expression that it was split
3004 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
3005 subexpressions that it was split into. */
3006 #define DECL_DEBUG_EXPR(NODE) \
3007 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
3009 #define SET_DECL_DEBUG_EXPR(NODE, VAL) \
3010 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
3012 /* An initialization priority. */
3013 typedef unsigned short priority_type;
3015 extern priority_type decl_init_priority_lookup (tree);
3016 extern priority_type decl_fini_priority_lookup (tree);
3017 extern void decl_init_priority_insert (tree, priority_type);
3018 extern void decl_fini_priority_insert (tree, priority_type);
3020 /* In a non-local VAR_DECL with static storage duration, true if the
3021 variable has an initialization priority. If false, the variable
3022 will be initialized at the DEFAULT_INIT_PRIORITY. */
3023 #define DECL_HAS_INIT_PRIORITY_P(NODE) \
3024 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
3026 /* For a VAR_DECL or FUNCTION_DECL the initialization priority of
3028 #define DECL_INIT_PRIORITY(NODE) \
3029 (decl_init_priority_lookup (NODE))
3030 /* Set the initialization priority for NODE to VAL. */
3031 #define SET_DECL_INIT_PRIORITY(NODE, VAL) \
3032 (decl_init_priority_insert (NODE, VAL))
3034 /* For a FUNCTION_DECL the finalization priority of NODE. */
3035 #define DECL_FINI_PRIORITY(NODE) \
3036 (decl_fini_priority_lookup (NODE))
3037 /* Set the finalization priority for NODE to VAL. */
3038 #define SET_DECL_FINI_PRIORITY(NODE, VAL) \
3039 (decl_fini_priority_insert (NODE, VAL))
3041 /* The initialization priority for entities for which no explicit
3042 initialization priority has been specified. */
3043 #define DEFAULT_INIT_PRIORITY 65535
3045 /* The maximum allowed initialization priority. */
3046 #define MAX_INIT_PRIORITY 65535
3048 /* The largest priority value reserved for use by system runtime
3050 #define MAX_RESERVED_INIT_PRIORITY 100
3052 /* In a VAR_DECL, the model to use if the data should be allocated from
3053 thread-local storage. */
3054 #define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
3056 /* In a VAR_DECL, nonzero if the data should be allocated from
3057 thread-local storage. */
3058 #define DECL_THREAD_LOCAL_P(NODE) \
3059 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model >= TLS_MODEL_REAL)
3061 struct GTY(()) tree_var_decl {
3062 struct tree_decl_with_vis common;
3066 /* This field is used to reference anything in decl.result and is meant only
3067 for use by the garbage collector. */
3068 #define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
3070 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
3071 Before the struct containing the FUNCTION_DECL is laid out,
3072 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
3073 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
3074 function. When the class is laid out, this pointer is changed
3075 to an INTEGER_CST node which is suitable for use as an index
3076 into the virtual function table.
3077 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
3078 #define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
3081 tree_decl_non_common {
3082 struct tree_decl_with_vis common;
3083 /* C++ uses this in namespaces. */
3085 /* C++ uses this in templates. */
3087 /* Almost all FE's use this. */
3089 /* C++ uses this in namespaces. */
3093 /* In FUNCTION_DECL, holds the decl for the return value. */
3094 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
3096 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
3097 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
3099 /* In a FUNCTION_DECL, the saved representation of the body of the
3101 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3103 /* Nonzero in a FUNCTION_DECL means this function should be treated
3104 as if it were a malloc, meaning it returns a pointer that is
3106 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3108 /* Nonzero in a FUNCTION_DECL means this function should be treated as
3109 C++ operator new, meaning that it returns a pointer for which we
3110 should not use type based aliasing. */
3111 #define DECL_IS_OPERATOR_NEW(NODE) \
3112 (FUNCTION_DECL_CHECK (NODE)->function_decl.operator_new_flag)
3114 /* Nonzero in a FUNCTION_DECL means this function may return more
3116 #define DECL_IS_RETURNS_TWICE(NODE) \
3117 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3119 /* Nonzero in a FUNCTION_DECL means this function should be treated
3120 as "pure" function (like const function, but may read global memory). */
3121 #define DECL_PURE_P(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3123 /* Nonzero only if one of TREE_READONLY or DECL_PURE_P is nonzero AND
3124 the const or pure function may not terminate. When this is nonzero
3125 for a const or pure function, it can be dealt with by cse passes
3126 but cannot be removed by dce passes since you are not allowed to
3127 change an infinite looping program into one that terminates without
3129 #define DECL_LOOPING_CONST_OR_PURE_P(NODE) \
3130 (FUNCTION_DECL_CHECK (NODE)->function_decl.looping_const_or_pure_flag)
3132 /* Nonzero in a FUNCTION_DECL means this function should be treated
3133 as "novops" function (function that does not read global memory,
3134 but may have arbitrary side effects). */
3135 #define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3137 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
3138 at the beginning or end of execution. */
3139 #define DECL_STATIC_CONSTRUCTOR(NODE) \
3140 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3142 #define DECL_STATIC_DESTRUCTOR(NODE) \
3143 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3145 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
3146 be instrumented with calls to support routines. */
3147 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3148 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3150 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3151 disabled in this function. */
3152 #define DECL_NO_LIMIT_STACK(NODE) \
3153 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3155 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3156 static chain is not needed. */
3157 #define DECL_NO_STATIC_CHAIN(NODE) \
3158 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3160 /* Nonzero for a decl that cgraph has decided should be inlined into
3161 at least one call site. It is not meaningful to look at this
3162 directly; always use cgraph_function_possibly_inlined_p. */
3163 #define DECL_POSSIBLY_INLINED(DECL) \
3164 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3166 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3167 such as via the `inline' keyword in C/C++. This flag controls the linkage
3168 semantics of 'inline' */
3169 #define DECL_DECLARED_INLINE_P(NODE) \
3170 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3172 /* Nonzero in a FUNCTION_DECL means this function should not get
3173 -Winline warnings. */
3174 #define DECL_NO_INLINE_WARNING_P(NODE) \
3175 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_inline_warning_flag)
3177 /* Nonzero in a FUNCTION_DECL that should be always inlined by the inliner
3178 disregarding size and cost heuristics. This is equivalent to using
3179 the always_inline attribute without the required diagnostics if the
3180 function cannot be inlined. */
3181 #define DECL_DISREGARD_INLINE_LIMITS(NODE) \
3182 (FUNCTION_DECL_CHECK (NODE)->function_decl.disregard_inline_limits)
3184 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3185 that describes the status of this function. */
3186 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3188 /* In a FUNCTION_DECL, nonzero means a built in function. */
3189 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3191 /* For a builtin function, identify which part of the compiler defined it. */
3192 #define DECL_BUILT_IN_CLASS(NODE) \
3193 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3195 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
3196 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3198 #define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3199 #define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3201 /* In FUNCTION_DECL, the function specific target options to use when compiling
3203 #define DECL_FUNCTION_SPECIFIC_TARGET(NODE) \
3204 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_target)
3206 /* In FUNCTION_DECL, the function specific optimization options to use when
3207 compiling this function. */
3208 #define DECL_FUNCTION_SPECIFIC_OPTIMIZATION(NODE) \
3209 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_optimization)
3211 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3212 arguments/result/saved_tree fields by front ends. It was either inherit
3213 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3214 which seemed a bit strange. */
3216 struct GTY(()) tree_function_decl {
3217 struct tree_decl_non_common common;
3221 /* Function specific options that are used by this function. */
3222 tree function_specific_target; /* target options */
3223 tree function_specific_optimization; /* optimization options */
3225 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
3226 DECL_FUNCTION_CODE. Otherwise unused.
3227 ??? The bitfield needs to be able to hold all target function
3229 ENUM_BITFIELD(built_in_function) function_code : 11;
3230 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3232 unsigned static_ctor_flag : 1;
3233 unsigned static_dtor_flag : 1;
3234 unsigned uninlinable : 1;
3236 unsigned possibly_inlined : 1;
3237 unsigned novops_flag : 1;
3238 unsigned returns_twice_flag : 1;
3239 unsigned malloc_flag : 1;
3240 unsigned operator_new_flag : 1;
3241 unsigned declared_inline_flag : 1;
3242 unsigned regdecl_flag : 1;
3244 unsigned no_inline_warning_flag : 1;
3245 unsigned no_instrument_function_entry_exit : 1;
3246 unsigned no_limit_stack : 1;
3247 unsigned disregard_inline_limits : 1;
3248 unsigned pure_flag : 1;
3249 unsigned looping_const_or_pure_flag : 1;
3255 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3256 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3258 /* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3259 into stabs. Instead it will generate cross reference ('x') of names.
3260 This uses the same flag as DECL_EXTERNAL. */
3261 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3262 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_2)
3264 /* Getter of the imported declaration associated to the
3265 IMPORTED_DECL node. */
3266 #define IMPORTED_DECL_ASSOCIATED_DECL(NODE) \
3267 (DECL_INITIAL (IMPORTED_DECL_CHECK (NODE)))
3269 struct GTY(()) tree_type_decl {
3270 struct tree_decl_non_common common;
3274 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3275 To reduce overhead, the nodes containing the statements are not trees.
3276 This avoids the overhead of tree_common on all linked list elements.
3278 Use the interface in tree-iterator.h to access this node. */
3280 #define STATEMENT_LIST_HEAD(NODE) \
3281 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3282 #define STATEMENT_LIST_TAIL(NODE) \
3283 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3285 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
3287 struct tree_statement_list_node *prev;
3288 struct tree_statement_list_node *next;
3292 struct GTY(()) tree_statement_list
3294 struct tree_common common;
3295 struct tree_statement_list_node *head;
3296 struct tree_statement_list_node *tail;
3300 /* Optimization options used by a function. */
3302 struct GTY(()) tree_optimization_option {
3303 struct tree_common common;
3305 /* The optimization options used by the user. */
3306 struct cl_optimization opts;
3309 #define TREE_OPTIMIZATION(NODE) \
3310 (&OPTIMIZATION_NODE_CHECK (NODE)->optimization.opts)
3312 /* Return a tree node that encapsulates the current optimization options. */
3313 extern tree build_optimization_node (void);
3315 /* Target options used by a function. */
3317 struct GTY(()) tree_target_option {
3318 struct tree_common common;
3320 /* The optimization options used by the user. */
3321 struct cl_target_option opts;
3324 #define TREE_TARGET_OPTION(NODE) \
3325 (&TARGET_OPTION_NODE_CHECK (NODE)->target_option.opts)
3327 /* Return a tree node that encapsulates the current target options. */
3328 extern tree build_target_option_node (void);
3331 /* Define the overall contents of a tree node.
3332 It may be any of the structures declared above
3333 for various types of node. */
3335 union GTY ((ptr_alias (union lang_tree_node),
3336 desc ("tree_node_structure (&%h)"))) tree_node {
3337 struct tree_base GTY ((tag ("TS_BASE"))) base;
3338 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3339 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3340 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3341 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
3342 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3343 struct tree_string GTY ((tag ("TS_STRING"))) string;
3344 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3345 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3346 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3347 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3348 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3349 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3350 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3351 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3352 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3353 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3354 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3355 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3356 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3357 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3358 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3359 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3360 struct tree_list GTY ((tag ("TS_LIST"))) list;
3361 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3362 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3363 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3364 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3365 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3366 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3367 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3368 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3369 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
3370 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
3373 /* Standard named or nameless data types of the C compiler. */
3395 TI_INTEGER_MINUS_ONE,
3412 TI_COMPLEX_INTEGER_TYPE,
3413 TI_COMPLEX_FLOAT_TYPE,
3414 TI_COMPLEX_DOUBLE_TYPE,
3415 TI_COMPLEX_LONG_DOUBLE_TYPE,
3419 TI_LONG_DOUBLE_TYPE,
3423 TI_LONG_DOUBLE_PTR_TYPE,
3424 TI_INTEGER_PTR_TYPE,
3433 TI_VA_LIST_GPR_COUNTER_FIELD,
3434 TI_VA_LIST_FPR_COUNTER_FIELD,
3441 TI_DFLOAT32_PTR_TYPE,
3442 TI_DFLOAT64_PTR_TYPE,
3443 TI_DFLOAT128_PTR_TYPE,
3452 TI_SAT_LLFRACT_TYPE,
3453 TI_SAT_USFRACT_TYPE,
3455 TI_SAT_ULFRACT_TYPE,
3456 TI_SAT_ULLFRACT_TYPE,
3468 TI_SAT_LLACCUM_TYPE,
3469 TI_SAT_USACCUM_TYPE,
3471 TI_SAT_ULACCUM_TYPE,
3472 TI_SAT_ULLACCUM_TYPE,
3518 TI_OPTIMIZATION_DEFAULT,
3519 TI_OPTIMIZATION_CURRENT,
3520 TI_TARGET_OPTION_DEFAULT,
3521 TI_TARGET_OPTION_CURRENT,
3522 TI_CURRENT_TARGET_PRAGMA,
3523 TI_CURRENT_OPTIMIZE_PRAGMA,
3528 extern GTY(()) tree global_trees[TI_MAX];
3530 #define error_mark_node global_trees[TI_ERROR_MARK]
3532 #define intQI_type_node global_trees[TI_INTQI_TYPE]
3533 #define intHI_type_node global_trees[TI_INTHI_TYPE]
3534 #define intSI_type_node global_trees[TI_INTSI_TYPE]
3535 #define intDI_type_node global_trees[TI_INTDI_TYPE]
3536 #define intTI_type_node global_trees[TI_INTTI_TYPE]
3538 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3539 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3540 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3541 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3542 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3544 #define uint32_type_node global_trees[TI_UINT32_TYPE]
3545 #define uint64_type_node global_trees[TI_UINT64_TYPE]
3547 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
3548 #define integer_one_node global_trees[TI_INTEGER_ONE]
3549 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3550 #define size_zero_node global_trees[TI_SIZE_ZERO]
3551 #define size_one_node global_trees[TI_SIZE_ONE]
3552 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3553 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3554 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3556 /* Base access nodes. */
3557 #define access_public_node global_trees[TI_PUBLIC]
3558 #define access_protected_node global_trees[TI_PROTECTED]
3559 #define access_private_node global_trees[TI_PRIVATE]
3561 #define null_pointer_node global_trees[TI_NULL_POINTER]
3563 #define float_type_node global_trees[TI_FLOAT_TYPE]
3564 #define double_type_node global_trees[TI_DOUBLE_TYPE]
3565 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3567 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3568 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3569 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3570 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3572 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3573 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3574 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3575 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3577 #define void_type_node global_trees[TI_VOID_TYPE]
3578 /* The C type `void *'. */
3579 #define ptr_type_node global_trees[TI_PTR_TYPE]
3580 /* The C type `const void *'. */
3581 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3582 /* The C type `size_t'. */
3583 #define size_type_node global_trees[TI_SIZE_TYPE]
3584 #define pid_type_node global_trees[TI_PID_TYPE]
3585 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3586 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3587 #define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3588 #define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3589 /* The C type `FILE *'. */
3590 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3592 #define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
3593 #define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
3594 #define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
3596 /* The decimal floating point types. */
3597 #define dfloat32_type_node global_trees[TI_DFLOAT32_TYPE]
3598 #define dfloat64_type_node global_trees[TI_DFLOAT64_TYPE]
3599 #define dfloat128_type_node global_trees[TI_DFLOAT128_TYPE]
3600 #define dfloat32_ptr_type_node global_trees[TI_DFLOAT32_PTR_TYPE]
3601 #define dfloat64_ptr_type_node global_trees[TI_DFLOAT64_PTR_TYPE]
3602 #define dfloat128_ptr_type_node global_trees[TI_DFLOAT128_PTR_TYPE]
3604 /* The fixed-point types. */
3605 #define sat_short_fract_type_node global_trees[TI_SAT_SFRACT_TYPE]
3606 #define sat_fract_type_node global_trees[TI_SAT_FRACT_TYPE]
3607 #define sat_long_fract_type_node global_trees[TI_SAT_LFRACT_TYPE]
3608 #define sat_long_long_fract_type_node global_trees[TI_SAT_LLFRACT_TYPE]
3609 #define sat_unsigned_short_fract_type_node \
3610 global_trees[TI_SAT_USFRACT_TYPE]
3611 #define sat_unsigned_fract_type_node global_trees[TI_SAT_UFRACT_TYPE]
3612 #define sat_unsigned_long_fract_type_node \
3613 global_trees[TI_SAT_ULFRACT_TYPE]
3614 #define sat_unsigned_long_long_fract_type_node \
3615 global_trees[TI_SAT_ULLFRACT_TYPE]
3616 #define short_fract_type_node global_trees[TI_SFRACT_TYPE]
3617 #define fract_type_node global_trees[TI_FRACT_TYPE]
3618 #define long_fract_type_node global_trees[TI_LFRACT_TYPE]
3619 #define long_long_fract_type_node global_trees[TI_LLFRACT_TYPE]
3620 #define unsigned_short_fract_type_node global_trees[TI_USFRACT_TYPE]
3621 #define unsigned_fract_type_node global_trees[TI_UFRACT_TYPE]
3622 #define unsigned_long_fract_type_node global_trees[TI_ULFRACT_TYPE]
3623 #define unsigned_long_long_fract_type_node \
3624 global_trees[TI_ULLFRACT_TYPE]
3625 #define sat_short_accum_type_node global_trees[TI_SAT_SACCUM_TYPE]
3626 #define sat_accum_type_node global_trees[TI_SAT_ACCUM_TYPE]
3627 #define sat_long_accum_type_node global_trees[TI_SAT_LACCUM_TYPE]
3628 #define sat_long_long_accum_type_node global_trees[TI_SAT_LLACCUM_TYPE]
3629 #define sat_unsigned_short_accum_type_node \
3630 global_trees[TI_SAT_USACCUM_TYPE]
3631 #define sat_unsigned_accum_type_node global_trees[TI_SAT_UACCUM_TYPE]
3632 #define sat_unsigned_long_accum_type_node \
3633 global_trees[TI_SAT_ULACCUM_TYPE]
3634 #define sat_unsigned_long_long_accum_type_node \
3635 global_trees[TI_SAT_ULLACCUM_TYPE]
3636 #define short_accum_type_node global_trees[TI_SACCUM_TYPE]
3637 #define accum_type_node global_trees[TI_ACCUM_TYPE]
3638 #define long_accum_type_node global_trees[TI_LACCUM_TYPE]
3639 #define long_long_accum_type_node global_trees[TI_LLACCUM_TYPE]
3640 #define unsigned_short_accum_type_node global_trees[TI_USACCUM_TYPE]
3641 #define unsigned_accum_type_node global_trees[TI_UACCUM_TYPE]
3642 #define unsigned_long_accum_type_node global_trees[TI_ULACCUM_TYPE]
3643 #define unsigned_long_long_accum_type_node \
3644 global_trees[TI_ULLACCUM_TYPE]
3645 #define qq_type_node global_trees[TI_QQ_TYPE]
3646 #define hq_type_node global_trees[TI_HQ_TYPE]
3647 #define sq_type_node global_trees[TI_SQ_TYPE]
3648 #define dq_type_node global_trees[TI_DQ_TYPE]
3649 #define tq_type_node global_trees[TI_TQ_TYPE]
3650 #define uqq_type_node global_trees[TI_UQQ_TYPE]
3651 #define uhq_type_node global_trees[TI_UHQ_TYPE]
3652 #define usq_type_node global_trees[TI_USQ_TYPE]
3653 #define udq_type_node global_trees[TI_UDQ_TYPE]
3654 #define utq_type_node global_trees[TI_UTQ_TYPE]
3655 #define sat_qq_type_node global_trees[TI_SAT_QQ_TYPE]
3656 #define sat_hq_type_node global_trees[TI_SAT_HQ_TYPE]
3657 #define sat_sq_type_node global_trees[TI_SAT_SQ_TYPE]
3658 #define sat_dq_type_node global_trees[TI_SAT_DQ_TYPE]
3659 #define sat_tq_type_node global_trees[TI_SAT_TQ_TYPE]
3660 #define sat_uqq_type_node global_trees[TI_SAT_UQQ_TYPE]
3661 #define sat_uhq_type_node global_trees[TI_SAT_UHQ_TYPE]
3662 #define sat_usq_type_node global_trees[TI_SAT_USQ_TYPE]
3663 #define sat_udq_type_node global_trees[TI_SAT_UDQ_TYPE]
3664 #define sat_utq_type_node global_trees[TI_SAT_UTQ_TYPE]
3665 #define ha_type_node global_trees[TI_HA_TYPE]
3666 #define sa_type_node global_trees[TI_SA_TYPE]
3667 #define da_type_node global_trees[TI_DA_TYPE]
3668 #define ta_type_node global_trees[TI_TA_TYPE]
3669 #define uha_type_node global_trees[TI_UHA_TYPE]
3670 #define usa_type_node global_trees[TI_USA_TYPE]
3671 #define uda_type_node global_trees[TI_UDA_TYPE]
3672 #define uta_type_node global_trees[TI_UTA_TYPE]
3673 #define sat_ha_type_node global_trees[TI_SAT_HA_TYPE]
3674 #define sat_sa_type_node global_trees[TI_SAT_SA_TYPE]
3675 #define sat_da_type_node global_trees[TI_SAT_DA_TYPE]
3676 #define sat_ta_type_node global_trees[TI_SAT_TA_TYPE]
3677 #define sat_uha_type_node global_trees[TI_SAT_UHA_TYPE]
3678 #define sat_usa_type_node global_trees[TI_SAT_USA_TYPE]
3679 #define sat_uda_type_node global_trees[TI_SAT_UDA_TYPE]
3680 #define sat_uta_type_node global_trees[TI_SAT_UTA_TYPE]
3682 /* The node that should be placed at the end of a parameter list to
3683 indicate that the function does not take a variable number of
3684 arguments. The TREE_VALUE will be void_type_node and there will be
3685 no TREE_CHAIN. Language-independent code should not assume
3686 anything else about this node. */
3687 #define void_list_node global_trees[TI_VOID_LIST_NODE]
3689 #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
3690 #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
3692 /* Optimization options (OPTIMIZATION_NODE) to use for default and current
3694 #define optimization_default_node global_trees[TI_OPTIMIZATION_DEFAULT]
3695 #define optimization_current_node global_trees[TI_OPTIMIZATION_CURRENT]
3697 /* Default/current target options (TARGET_OPTION_NODE). */
3698 #define target_option_default_node global_trees[TI_TARGET_OPTION_DEFAULT]
3699 #define target_option_current_node global_trees[TI_TARGET_OPTION_CURRENT]
3701 /* Default tree list option(), optimize() pragmas to be linked into the
3703 #define current_target_pragma global_trees[TI_CURRENT_TARGET_PRAGMA]
3704 #define current_optimize_pragma global_trees[TI_CURRENT_OPTIMIZE_PRAGMA]
3706 /* An enumeration of the standard C integer types. These must be
3707 ordered so that shorter types appear before longer ones, and so
3708 that signed types appear before unsigned ones, for the correct
3709 functioning of interpret_integer() in c-lex.c. */
3710 enum integer_type_kind
3722 itk_unsigned_long_long,
3726 typedef enum integer_type_kind integer_type_kind;
3728 /* The standard C integer types. Use integer_type_kind to index into
3730 extern GTY(()) tree integer_types[itk_none];
3732 #define char_type_node integer_types[itk_char]
3733 #define signed_char_type_node integer_types[itk_signed_char]
3734 #define unsigned_char_type_node integer_types[itk_unsigned_char]
3735 #define short_integer_type_node integer_types[itk_short]
3736 #define short_unsigned_type_node integer_types[itk_unsigned_short]
3737 #define integer_type_node integer_types[itk_int]
3738 #define unsigned_type_node integer_types[itk_unsigned_int]
3739 #define long_integer_type_node integer_types[itk_long]
3740 #define long_unsigned_type_node integer_types[itk_unsigned_long]
3741 #define long_long_integer_type_node integer_types[itk_long_long]
3742 #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
3744 /* Set to the default thread-local storage (tls) model to use. */
3746 extern enum tls_model flag_tls_default;
3749 /* A pointer-to-function member type looks like:
3756 If __pfn is NULL, it is a NULL pointer-to-member-function.
3758 (Because the vtable is always the first thing in the object, we
3759 don't need its offset.) If the function is virtual, then PFN is
3760 one plus twice the index into the vtable; otherwise, it is just a
3761 pointer to the function.
3763 Unfortunately, using the lowest bit of PFN doesn't work in
3764 architectures that don't impose alignment requirements on function
3765 addresses, or that use the lowest bit to tell one ISA from another,
3766 for example. For such architectures, we use the lowest bit of
3767 DELTA instead of the lowest bit of the PFN, and DELTA will be
3770 enum ptrmemfunc_vbit_where_t
3772 ptrmemfunc_vbit_in_pfn,
3773 ptrmemfunc_vbit_in_delta
3776 #define NULL_TREE (tree) NULL
3778 extern tree decl_assembler_name (tree);
3779 extern bool decl_assembler_name_equal (tree decl, const_tree asmname);
3780 extern hashval_t decl_assembler_name_hash (const_tree asmname);
3782 /* Compute the number of bytes occupied by 'node'. This routine only
3783 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
3785 extern size_t tree_size (const_tree);
3787 /* Compute the number of bytes occupied by a tree with code CODE. This
3788 function cannot be used for TREE_VEC codes, which are of variable
3790 extern size_t tree_code_size (enum tree_code);
3792 /* Lowest level primitive for allocating a node.
3793 The TREE_CODE is the only argument. Contents are initialized
3794 to zero except for a few of the common fields. */
3796 extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
3797 #define make_node(t) make_node_stat (t MEM_STAT_INFO)
3799 /* Make a copy of a node, with all the same contents. */
3801 extern tree copy_node_stat (tree MEM_STAT_DECL);
3802 #define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
3804 /* Make a copy of a chain of TREE_LIST nodes. */
3806 extern tree copy_list (tree);
3809 extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
3810 #define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
3812 /* Make a TREE_VEC. */
3814 extern tree make_tree_vec_stat (int MEM_STAT_DECL);
3815 #define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
3817 /* Return the (unique) IDENTIFIER_NODE node for a given name.
3818 The name is supplied as a char *. */
3820 extern tree get_identifier (const char *);
3822 #if GCC_VERSION >= 3000
3823 #define get_identifier(str) \
3824 (__builtin_constant_p (str) \
3825 ? get_identifier_with_length ((str), strlen (str)) \
3826 : get_identifier (str))
3830 /* Identical to get_identifier, except that the length is assumed
3833 extern tree get_identifier_with_length (const char *, size_t);
3835 /* If an identifier with the name TEXT (a null-terminated string) has
3836 previously been referred to, return that node; otherwise return
3839 extern tree maybe_get_identifier (const char *);
3841 /* Construct various types of nodes. */
3843 extern tree build_nt (enum tree_code, ...);
3844 extern tree build_nt_call_list (tree, tree);
3846 extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
3847 #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
3848 extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3849 #define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
3850 extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
3851 #define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
3852 extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
3853 #define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
3854 extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
3855 tree MEM_STAT_DECL);
3856 #define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
3857 extern tree build5_stat (enum tree_code, tree, tree, tree, tree, tree,
3858 tree MEM_STAT_DECL);
3859 #define build5(c,t1,t2,t3,t4,t5,t6) build5_stat (c,t1,t2,t3,t4,t5,t6 MEM_STAT_INFO)
3860 extern tree build6_stat (enum tree_code, tree, tree, tree, tree, tree,
3861 tree, tree MEM_STAT_DECL);
3862 #define build6(c,t1,t2,t3,t4,t5,t6,t7) \
3863 build6_stat (c,t1,t2,t3,t4,t5,t6,t7 MEM_STAT_INFO)
3865 extern tree build_int_cst (tree, HOST_WIDE_INT);
3866 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
3867 extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
3868 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3869 extern tree build_int_cst_wide_type (tree,
3870 unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3871 extern tree build_vector (tree, tree);
3872 extern tree build_vector_from_ctor (tree, VEC(constructor_elt,gc) *);
3873 extern tree build_constructor (tree, VEC(constructor_elt,gc) *);
3874 extern tree build_constructor_single (tree, tree, tree);
3875 extern tree build_constructor_from_list (tree, tree);
3876 extern tree build_real_from_int_cst (tree, const_tree);
3877 extern tree build_complex (tree, tree, tree);
3878 extern tree build_one_cst (tree);
3879 extern tree build_string (int, const char *);
3880 extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
3881 #define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
3882 extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3883 extern tree build_fn_decl (const char *, tree);
3884 #define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
3885 extern tree build_block (tree, tree, tree, tree);
3886 extern tree build_empty_stmt (void);
3887 extern tree build_omp_clause (enum omp_clause_code);
3889 extern tree build_vl_exp_stat (enum tree_code, int MEM_STAT_DECL);
3890 #define build_vl_exp(c,n) build_vl_exp_stat (c,n MEM_STAT_INFO)
3892 extern tree build_call_list (tree, tree, tree);
3893 extern tree build_call_nary (tree, tree, int, ...);
3894 extern tree build_call_valist (tree, tree, int, va_list);
3895 extern tree build_call_array (tree, tree, int, tree*);
3897 /* Construct various nodes representing data types. */
3899 extern tree make_signed_type (int);
3900 extern tree make_unsigned_type (int);
3901 extern tree signed_or_unsigned_type_for (int, tree);
3902 extern tree signed_type_for (tree);
3903 extern tree unsigned_type_for (tree);
3904 extern void initialize_sizetypes (bool);
3905 extern void set_sizetype (tree);
3906 extern void fixup_unsigned_type (tree);
3907 extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
3908 extern tree build_pointer_type (tree);
3909 extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
3910 extern tree build_reference_type (tree);
3911 extern tree build_vector_type_for_mode (tree, enum machine_mode);
3912 extern tree build_vector_type (tree innertype, int nunits);
3913 extern tree build_opaque_vector_type (tree innertype, int nunits);
3914 extern tree build_type_no_quals (tree);
3915 extern tree build_index_type (tree);
3916 extern tree build_index_2_type (tree, tree);
3917 extern tree build_array_type (tree, tree);
3918 extern tree build_function_type (tree, tree);
3919 extern tree build_function_type_list (tree, ...);
3920 extern tree build_function_type_skip_args (tree, bitmap);
3921 extern tree build_function_decl_skip_args (tree, bitmap);
3922 extern tree build_varargs_function_type_list (tree, ...);
3923 extern tree build_method_type_directly (tree, tree, tree);
3924 extern tree build_method_type (tree, tree);
3925 extern tree build_offset_type (tree, tree);
3926 extern tree build_complex_type (tree);
3927 extern tree build_resx (int);
3928 extern tree array_type_nelts (const_tree);
3929 extern bool in_array_bounds_p (tree);
3930 extern bool range_in_array_bounds_p (tree);
3932 extern tree value_member (tree, tree);
3933 extern tree purpose_member (const_tree, tree);
3935 extern int attribute_list_equal (const_tree, const_tree);
3936 extern int attribute_list_contained (const_tree, const_tree);
3937 extern int tree_int_cst_equal (const_tree, const_tree);
3938 extern int tree_int_cst_lt (const_tree, const_tree);
3939 extern int tree_int_cst_compare (const_tree, const_tree);
3940 extern int host_integerp (const_tree, int);
3941 extern HOST_WIDE_INT tree_low_cst (const_tree, int);
3942 extern int tree_int_cst_msb (const_tree);
3943 extern int tree_int_cst_sgn (const_tree);
3944 extern int tree_int_cst_sign_bit (const_tree);
3945 extern unsigned int tree_int_cst_min_precision (tree, bool);
3946 extern bool tree_expr_nonnegative_p (tree);
3947 extern bool tree_expr_nonnegative_warnv_p (tree, bool *);
3948 extern bool may_negate_without_overflow_p (const_tree);
3949 extern tree strip_array_types (tree);
3950 extern tree excess_precision_type (tree);
3952 /* Construct various nodes representing fract or accum data types. */
3954 extern tree make_fract_type (int, int, int);
3955 extern tree make_accum_type (int, int, int);
3957 #define make_signed_fract_type(P) make_fract_type (P, 0, 0)
3958 #define make_unsigned_fract_type(P) make_fract_type (P, 1, 0)
3959 #define make_sat_signed_fract_type(P) make_fract_type (P, 0, 1)
3960 #define make_sat_unsigned_fract_type(P) make_fract_type (P, 1, 1)
3961 #define make_signed_accum_type(P) make_accum_type (P, 0, 0)
3962 #define make_unsigned_accum_type(P) make_accum_type (P, 1, 0)
3963 #define make_sat_signed_accum_type(P) make_accum_type (P, 0, 1)
3964 #define make_sat_unsigned_accum_type(P) make_accum_type (P, 1, 1)
3966 #define make_or_reuse_signed_fract_type(P) \
3967 make_or_reuse_fract_type (P, 0, 0)
3968 #define make_or_reuse_unsigned_fract_type(P) \
3969 make_or_reuse_fract_type (P, 1, 0)
3970 #define make_or_reuse_sat_signed_fract_type(P) \
3971 make_or_reuse_fract_type (P, 0, 1)
3972 #define make_or_reuse_sat_unsigned_fract_type(P) \
3973 make_or_reuse_fract_type (P, 1, 1)
3974 #define make_or_reuse_signed_accum_type(P) \
3975 make_or_reuse_accum_type (P, 0, 0)
3976 #define make_or_reuse_unsigned_accum_type(P) \
3977 make_or_reuse_accum_type (P, 1, 0)
3978 #define make_or_reuse_sat_signed_accum_type(P) \
3979 make_or_reuse_accum_type (P, 0, 1)
3980 #define make_or_reuse_sat_unsigned_accum_type(P) \
3981 make_or_reuse_accum_type (P, 1, 1)
3983 /* From expmed.c. Since rtl.h is included after tree.h, we can't
3984 put the prototype here. Rtl.h does declare the prototype if
3985 tree.h had been included. */
3987 extern tree make_tree (tree, rtx);
3989 /* Return a type like TTYPE except that its TYPE_ATTRIBUTES
3992 Such modified types already made are recorded so that duplicates
3995 extern tree build_type_attribute_variant (tree, tree);
3996 extern tree build_decl_attribute_variant (tree, tree);
3998 /* Structure describing an attribute and a function to handle it. */
3999 struct attribute_spec
4001 /* The name of the attribute (without any leading or trailing __),
4002 or NULL to mark the end of a table of attributes. */
4003 const char *const name;
4004 /* The minimum length of the list of arguments of the attribute. */
4005 const int min_length;
4006 /* The maximum length of the list of arguments of the attribute
4007 (-1 for no maximum). */
4008 const int max_length;
4009 /* Whether this attribute requires a DECL. If it does, it will be passed
4010 from types of DECLs, function return types and array element types to
4011 the DECLs, function types and array types respectively; but when
4012 applied to a type in any other circumstances, it will be ignored with
4013 a warning. (If greater control is desired for a given attribute,
4014 this should be false, and the flags argument to the handler may be
4015 used to gain greater control in that case.) */
4016 const bool decl_required;
4017 /* Whether this attribute requires a type. If it does, it will be passed
4018 from a DECL to the type of that DECL. */
4019 const bool type_required;
4020 /* Whether this attribute requires a function (or method) type. If it does,
4021 it will be passed from a function pointer type to the target type,
4022 and from a function return type (which is not itself a function
4023 pointer type) to the function type. */
4024 const bool function_type_required;
4025 /* Function to handle this attribute. NODE points to the node to which
4026 the attribute is to be applied. If a DECL, it should be modified in
4027 place; if a TYPE, a copy should be created. NAME is the name of the
4028 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
4029 of the arguments (which may be NULL). FLAGS gives further information
4030 about the context of the attribute. Afterwards, the attributes will
4031 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
4032 unless *NO_ADD_ATTRS is set to true (which should be done on error,
4033 as well as in any other cases when the attributes should not be added
4034 to the DECL or TYPE). Depending on FLAGS, any attributes to be
4035 applied to another type or DECL later may be returned;
4036 otherwise the return value should be NULL_TREE. This pointer may be
4037 NULL if no special handling is required beyond the checks implied
4038 by the rest of this structure. */
4039 tree (*const handler) (tree *node, tree name, tree args,
4040 int flags, bool *no_add_attrs);
4043 /* Flags that may be passed in the third argument of decl_attributes, and
4044 to handler functions for attributes. */
4045 enum attribute_flags
4047 /* The type passed in is the type of a DECL, and any attributes that
4048 should be passed in again to be applied to the DECL rather than the
4049 type should be returned. */
4050 ATTR_FLAG_DECL_NEXT = 1,
4051 /* The type passed in is a function return type, and any attributes that
4052 should be passed in again to be applied to the function type rather
4053 than the return type should be returned. */
4054 ATTR_FLAG_FUNCTION_NEXT = 2,
4055 /* The type passed in is an array element type, and any attributes that
4056 should be passed in again to be applied to the array type rather
4057 than the element type should be returned. */
4058 ATTR_FLAG_ARRAY_NEXT = 4,
4059 /* The type passed in is a structure, union or enumeration type being
4060 created, and should be modified in place. */
4061 ATTR_FLAG_TYPE_IN_PLACE = 8,
4062 /* The attributes are being applied by default to a library function whose
4063 name indicates known behavior, and should be silently ignored if they
4064 are not in fact compatible with the function type. */
4065 ATTR_FLAG_BUILT_IN = 16
4068 /* Default versions of target-overridable functions. */
4070 extern tree merge_decl_attributes (tree, tree);
4071 extern tree merge_type_attributes (tree, tree);
4073 /* Given a tree node and a string, return nonzero if the tree node is
4074 a valid attribute name for the string. */
4076 extern int is_attribute_p (const char *, const_tree);
4078 /* Given an attribute name and a list of attributes, return the list element
4079 of the attribute or NULL_TREE if not found. */
4081 extern tree lookup_attribute (const char *, tree);
4083 /* Remove any instances of attribute ATTR_NAME in LIST and return the
4086 extern tree remove_attribute (const char *, tree);
4088 /* Given two attributes lists, return a list of their union. */
4090 extern tree merge_attributes (tree, tree);
4092 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
4093 /* Given two Windows decl attributes lists, possibly including
4094 dllimport, return a list of their union . */
4095 extern tree merge_dllimport_decl_attributes (tree, tree);
4097 /* Handle a "dllimport" or "dllexport" attribute. */
4098 extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
4101 /* Check whether CAND is suitable to be returned from get_qualified_type
4102 (BASE, TYPE_QUALS). */
4104 extern bool check_qualified_type (const_tree, const_tree, int);
4106 /* Return a version of the TYPE, qualified as indicated by the
4107 TYPE_QUALS, if one exists. If no qualified version exists yet,
4108 return NULL_TREE. */
4110 extern tree get_qualified_type (tree, int);
4112 /* Like get_qualified_type, but creates the type if it does not
4113 exist. This function never returns NULL_TREE. */
4115 extern tree build_qualified_type (tree, int);
4117 /* Like build_qualified_type, but only deals with the `const' and
4118 `volatile' qualifiers. This interface is retained for backwards
4119 compatibility with the various front-ends; new code should use
4120 build_qualified_type instead. */
4122 #define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
4123 build_qualified_type ((TYPE), \
4124 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
4125 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
4127 /* Make a copy of a type node. */
4129 extern tree build_distinct_type_copy (tree);
4130 extern tree build_variant_type_copy (tree);
4132 /* Finish up a builtin RECORD_TYPE. Give it a name and provide its
4133 fields. Optionally specify an alignment, and then lay it out. */
4135 extern void finish_builtin_struct (tree, const char *,
4138 /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
4139 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
4140 node, does nothing except for the first time. */
4142 extern void layout_type (tree);
4144 /* These functions allow a front-end to perform a manual layout of a
4145 RECORD_TYPE. (For instance, if the placement of subsequent fields
4146 depends on the placement of fields so far.) Begin by calling
4147 start_record_layout. Then, call place_field for each of the
4148 fields. Then, call finish_record_layout. See layout_type for the
4149 default way in which these functions are used. */
4151 typedef struct record_layout_info_s
4153 /* The RECORD_TYPE that we are laying out. */
4155 /* The offset into the record so far, in bytes, not including bits in
4158 /* The last known alignment of SIZE. */
4159 unsigned int offset_align;
4160 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
4162 /* The alignment of the record so far, in bits. */
4163 unsigned int record_align;
4164 /* The alignment of the record so far, ignoring #pragma pack and
4165 __attribute__ ((packed)), in bits. */
4166 unsigned int unpacked_align;
4167 /* The previous field layed out. */
4169 /* The static variables (i.e., class variables, as opposed to
4170 instance variables) encountered in T. */
4171 tree pending_statics;
4172 /* Bits remaining in the current alignment group */
4173 int remaining_in_alignment;
4174 /* True if we've seen a packed field that didn't have normal
4175 alignment anyway. */
4176 int packed_maybe_necessary;
4177 } *record_layout_info;
4179 extern record_layout_info start_record_layout (tree);
4180 extern tree bit_from_pos (tree, tree);
4181 extern tree byte_from_pos (tree, tree);
4182 extern void pos_from_bit (tree *, tree *, unsigned int, tree);
4183 extern void normalize_offset (tree *, tree *, unsigned int);
4184 extern tree rli_size_unit_so_far (record_layout_info);
4185 extern tree rli_size_so_far (record_layout_info);
4186 extern void normalize_rli (record_layout_info);
4187 extern void place_field (record_layout_info, tree);
4188 extern void compute_record_mode (tree);
4189 extern void finish_record_layout (record_layout_info, int);
4191 /* Given a hashcode and a ..._TYPE node (for which the hashcode was made),
4192 return a canonicalized ..._TYPE node, so that duplicates are not made.
4193 How the hash code is computed is up to the caller, as long as any two
4194 callers that could hash identical-looking type nodes agree. */
4196 extern tree type_hash_canon (unsigned int, tree);
4198 /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node,
4199 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE
4200 fields. Call this only once for any given decl node.
4202 Second argument is the boundary that this field can be assumed to
4203 be starting at (in bits). Zero means it can be assumed aligned
4204 on any boundary that may be needed. */
4206 extern void layout_decl (tree, unsigned);
4208 /* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
4209 a previous call to layout_decl and calls it again. */
4211 extern void relayout_decl (tree);
4213 /* Return the mode for data of a given size SIZE and mode class CLASS.
4214 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
4215 The value is BLKmode if no other mode is found. This is like
4216 mode_for_size, but is passed a tree. */
4218 extern enum machine_mode mode_for_size_tree (const_tree, enum mode_class, int);
4220 /* Return an expr equal to X but certainly not valid as an lvalue. */
4222 extern tree non_lvalue (tree);
4224 extern tree convert (tree, tree);
4225 extern unsigned int expr_align (const_tree);
4226 extern tree expr_first (tree);
4227 extern tree expr_last (tree);
4228 extern tree size_in_bytes (const_tree);
4229 extern HOST_WIDE_INT int_size_in_bytes (const_tree);
4230 extern HOST_WIDE_INT max_int_size_in_bytes (const_tree);
4231 extern tree bit_position (const_tree);
4232 extern HOST_WIDE_INT int_bit_position (const_tree);
4233 extern tree byte_position (const_tree);
4234 extern HOST_WIDE_INT int_byte_position (const_tree);
4236 /* Define data structures, macros, and functions for handling sizes
4237 and the various types used to represent sizes. */
4241 SIZETYPE, /* Normal representation of sizes in bytes. */
4242 SSIZETYPE, /* Signed representation of sizes in bytes. */
4243 BITSIZETYPE, /* Normal representation of sizes in bits. */
4244 SBITSIZETYPE, /* Signed representation of sizes in bits. */
4247 extern GTY(()) tree sizetype_tab[(int) TYPE_KIND_LAST];
4249 #define sizetype sizetype_tab[(int) SIZETYPE]
4250 #define bitsizetype sizetype_tab[(int) BITSIZETYPE]
4251 #define ssizetype sizetype_tab[(int) SSIZETYPE]
4252 #define sbitsizetype sizetype_tab[(int) SBITSIZETYPE]
4254 extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
4255 extern tree size_binop (enum tree_code, tree, tree);
4256 extern tree size_diffop (tree, tree);
4258 #define size_int(L) size_int_kind (L, SIZETYPE)
4259 #define ssize_int(L) size_int_kind (L, SSIZETYPE)
4260 #define bitsize_int(L) size_int_kind (L, BITSIZETYPE)
4261 #define sbitsize_int(L) size_int_kind (L, SBITSIZETYPE)
4263 extern tree round_up (tree, int);
4264 extern tree round_down (tree, int);
4265 extern tree get_pending_sizes (void);
4266 extern void put_pending_size (tree);
4267 extern void put_pending_sizes (tree);
4269 /* Type for sizes of data-type. */
4271 #define BITS_PER_UNIT_LOG \
4272 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \
4273 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
4274 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
4276 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
4277 extern unsigned int maximum_field_alignment;
4278 /* and its original value in bytes, specified via -fpack-struct=<value>. */
4279 extern unsigned int initial_max_fld_align;
4281 /* Concatenate two lists (chains of TREE_LIST nodes) X and Y
4282 by making the last node in X point to Y.
4283 Returns X, except if X is 0 returns Y. */
4285 extern tree chainon (tree, tree);
4287 /* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
4289 extern tree tree_cons_stat (tree, tree, tree MEM_STAT_DECL);
4290 #define tree_cons(t,q,w) tree_cons_stat (t,q,w MEM_STAT_INFO)
4292 /* Return the last tree node in a chain. */
4294 extern tree tree_last (tree);
4296 /* Return the node in a chain whose TREE_VALUE is x, NULL if not found. */
4298 extern tree tree_find_value (tree, tree);
4300 /* Reverse the order of elements in a chain, and return the new head. */
4302 extern tree nreverse (tree);
4304 /* Returns the length of a chain of nodes
4305 (number of chain pointers to follow before reaching a null pointer). */
4307 extern int list_length (const_tree);
4309 /* Returns the number of FIELD_DECLs in a type. */
4311 extern int fields_length (const_tree);
4313 /* Given an initializer INIT, return TRUE if INIT is zero or some
4314 aggregate of zeros. Otherwise return FALSE. */
4316 extern bool initializer_zerop (const_tree);
4318 /* Given a CONSTRUCTOR CTOR, return the elements as a TREE_LIST. */
4320 extern tree ctor_to_list (tree);
4322 /* Examine CTOR to discover:
4323 * how many scalar fields are set to nonzero values,
4324 and place it in *P_NZ_ELTS;
4325 * how many scalar fields in total are in CTOR,
4326 and place it in *P_ELT_COUNT.
4327 * if a type is a union, and the initializer from the constructor
4328 is not the largest element in the union, then set *p_must_clear.
4330 Return whether or not CTOR is a valid static constant initializer, the same
4331 as "initializer_constant_valid_p (CTOR, TREE_TYPE (CTOR)) != 0". */
4333 extern bool categorize_ctor_elements (const_tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
4336 extern HOST_WIDE_INT count_type_elements (const_tree, bool);
4338 /* integer_zerop (tree x) is nonzero if X is an integer constant of value 0. */
4340 extern int integer_zerop (const_tree);
4342 /* integer_onep (tree x) is nonzero if X is an integer constant of value 1. */
4344 extern int integer_onep (const_tree);
4346 /* integer_all_onesp (tree x) is nonzero if X is an integer constant
4347 all of whose significant bits are 1. */
4349 extern int integer_all_onesp (const_tree);
4351 /* integer_pow2p (tree x) is nonzero is X is an integer constant with
4352 exactly one bit 1. */
4354 extern int integer_pow2p (const_tree);
4356 /* integer_nonzerop (tree x) is nonzero if X is an integer constant
4357 with a nonzero value. */
4359 extern int integer_nonzerop (const_tree);
4361 extern bool cst_and_fits_in_hwi (const_tree);
4362 extern tree num_ending_zeros (const_tree);
4364 /* fixed_zerop (tree x) is nonzero if X is a fixed-point constant of
4367 extern int fixed_zerop (const_tree);
4369 /* staticp (tree x) is nonzero if X is a reference to data allocated
4370 at a fixed address in memory. Returns the outermost data. */
4372 extern tree staticp (tree);
4374 /* save_expr (EXP) returns an expression equivalent to EXP
4375 but it can be used multiple times within context CTX
4376 and only evaluate EXP once. */
4378 extern tree save_expr (tree);
4380 /* Look inside EXPR and into any simple arithmetic operations. Return
4381 the innermost non-arithmetic node. */
4383 extern tree skip_simple_arithmetic (tree);
4385 /* Return which tree structure is used by T. */
4387 enum tree_node_structure_enum tree_node_structure (const_tree);
4389 /* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
4390 or offset that depends on a field within a record.
4392 Note that we only allow such expressions within simple arithmetic
4395 extern bool contains_placeholder_p (const_tree);
4397 /* This macro calls the above function but short-circuits the common
4398 case of a constant to save time. Also check for null. */
4400 #define CONTAINS_PLACEHOLDER_P(EXP) \
4401 ((EXP) != 0 && ! TREE_CONSTANT (EXP) && contains_placeholder_p (EXP))
4403 /* Return 1 if any part of the computation of TYPE involves a PLACEHOLDER_EXPR.
4404 This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and field
4407 extern bool type_contains_placeholder_p (tree);
4409 /* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
4410 return a tree with all occurrences of references to F in a
4411 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP
4412 contains only arithmetic expressions. */
4414 extern tree substitute_in_expr (tree, tree, tree);
4416 /* This macro calls the above function but short-circuits the common
4417 case of a constant to save time and also checks for NULL. */
4419 #define SUBSTITUTE_IN_EXPR(EXP, F, R) \
4420 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) : substitute_in_expr (EXP, F, R))
4422 /* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
4423 for it within OBJ, a tree that is an object or a chain of references. */
4425 extern tree substitute_placeholder_in_expr (tree, tree);
4427 /* This macro calls the above function but short-circuits the common
4428 case of a constant to save time and also checks for NULL. */
4430 #define SUBSTITUTE_PLACEHOLDER_IN_EXPR(EXP, OBJ) \
4431 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) \
4432 : substitute_placeholder_in_expr (EXP, OBJ))
4434 /* variable_size (EXP) is like save_expr (EXP) except that it
4435 is for the special case of something that is part of a
4436 variable size for a data type. It makes special arrangements
4437 to compute the value at the right time when the data type
4438 belongs to a function parameter. */
4440 extern tree variable_size (tree);
4442 /* stabilize_reference (EXP) returns a reference equivalent to EXP
4443 but it can be used multiple times
4444 and only evaluate the subexpressions once. */
4446 extern tree stabilize_reference (tree);
4448 /* Subroutine of stabilize_reference; this is called for subtrees of
4449 references. Any expression with side-effects must be put in a SAVE_EXPR
4450 to ensure that it is only evaluated once. */
4452 extern tree stabilize_reference_1 (tree);
4454 /* Return EXP, stripped of any conversions to wider types
4455 in such a way that the result of converting to type FOR_TYPE
4456 is the same as if EXP were converted to FOR_TYPE.
4457 If FOR_TYPE is 0, it signifies EXP's type. */
4459 extern tree get_unwidened (tree, tree);
4461 /* Return OP or a simpler expression for a narrower value
4462 which can be sign-extended or zero-extended to give back OP.
4463 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
4464 or 0 if the value should be sign-extended. */
4466 extern tree get_narrower (tree, int *);
4468 /* Return true if T is an expression that get_inner_reference handles. */
4471 handled_component_p (const_tree t)
4473 switch (TREE_CODE (t))
4478 case ARRAY_RANGE_REF:
4479 case VIEW_CONVERT_EXPR:
4489 /* Given an expression EXP that is a handled_component_p,
4490 look for the ultimate containing object, which is returned and specify
4491 the access position and size. */
4493 extern tree get_inner_reference (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
4494 tree *, enum machine_mode *, int *, int *,
4497 /* Given an expression EXP that may be a COMPONENT_REF, an ARRAY_REF or an
4498 ARRAY_RANGE_REF, look for whether EXP or any nested component-refs within
4499 EXP is marked as PACKED. */
4501 extern bool contains_packed_reference (const_tree exp);
4503 /* Return a tree of sizetype representing the size, in bytes, of the element
4504 of EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
4506 extern tree array_ref_element_size (tree);
4508 /* Return a tree representing the lower bound of the array mentioned in
4509 EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
4511 extern tree array_ref_low_bound (tree);
4513 /* Return a tree representing the upper bound of the array mentioned in
4514 EXP, an ARRAY_REF or an ARRAY_RANGE_REF. */
4516 extern tree array_ref_up_bound (tree);
4518 /* Return a tree representing the offset, in bytes, of the field referenced
4519 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
4521 extern tree component_ref_field_offset (tree);
4523 /* Given a DECL or TYPE, return the scope in which it was declared, or
4524 NUL_TREE if there is no containing scope. */
4526 extern tree get_containing_scope (const_tree);
4528 /* Return the FUNCTION_DECL which provides this _DECL with its context,
4530 extern tree decl_function_context (const_tree);
4532 /* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides
4533 this _DECL with its context, or zero if none. */
4534 extern tree decl_type_context (const_tree);
4536 /* Return 1 if EXPR is the real constant zero. */
4537 extern int real_zerop (const_tree);
4539 /* Declare commonly used variables for tree structure. */
4541 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
4542 Zero means allow extended lvalues. */
4544 extern int pedantic_lvalues;
4546 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
4548 extern GTY(()) tree current_function_decl;
4550 /* Nonzero means a FUNC_BEGIN label was emitted. */
4551 extern GTY(()) const char * current_function_func_begin_label;
4553 /* Iterator for going through the function arguments. */
4555 tree fntype; /* function type declaration */
4556 tree next; /* TREE_LIST pointing to the next argument */
4557 } function_args_iterator;
4559 /* Initialize the iterator I with arguments from function FNDECL */
4562 function_args_iter_init (function_args_iterator *i, tree fntype)
4565 i->next = TYPE_ARG_TYPES (fntype);
4568 /* Return a pointer that holds the next argument if there are more arguments to
4569 handle, otherwise return NULL. */
4571 static inline tree *
4572 function_args_iter_cond_ptr (function_args_iterator *i)
4574 return (i->next) ? &TREE_VALUE (i->next) : NULL;
4577 /* Return the next argument if there are more arguments to handle, otherwise
4581 function_args_iter_cond (function_args_iterator *i)
4583 return (i->next) ? TREE_VALUE (i->next) : NULL_TREE;
4586 /* Advance to the next argument. */
4588 function_args_iter_next (function_args_iterator *i)
4590 gcc_assert (i->next != NULL_TREE);
4591 i->next = TREE_CHAIN (i->next);
4594 /* We set BLOCK_SOURCE_LOCATION only to inlined function entry points. */
4597 inlined_function_outer_scope_p (const_tree block)
4599 return BLOCK_SOURCE_LOCATION (block) != UNKNOWN_LOCATION;
4602 /* Loop over all function arguments of FNTYPE. In each iteration, PTR is set
4603 to point to the next tree element. ITER is an instance of
4604 function_args_iterator used to iterate the arguments. */
4605 #define FOREACH_FUNCTION_ARGS_PTR(FNTYPE, PTR, ITER) \
4606 for (function_args_iter_init (&(ITER), (FNTYPE)); \
4607 (PTR = function_args_iter_cond_ptr (&(ITER))) != NULL; \
4608 function_args_iter_next (&(ITER)))
4610 /* Loop over all function arguments of FNTYPE. In each iteration, TREE is set
4611 to the next tree element. ITER is an instance of function_args_iterator
4612 used to iterate the arguments. */
4613 #define FOREACH_FUNCTION_ARGS(FNTYPE, TREE, ITER) \
4614 for (function_args_iter_init (&(ITER), (FNTYPE)); \
4615 (TREE = function_args_iter_cond (&(ITER))) != NULL_TREE; \
4616 function_args_iter_next (&(ITER)))
4621 extern unsigned crc32_string (unsigned, const char *);
4622 extern void clean_symbol_name (char *);
4623 extern tree get_file_function_name (const char *);
4624 extern tree get_callee_fndecl (const_tree);
4625 extern void change_decl_assembler_name (tree, tree);
4626 extern int type_num_arguments (const_tree);
4627 extern bool associative_tree_code (enum tree_code);
4628 extern bool commutative_tree_code (enum tree_code);
4629 extern tree upper_bound_in_type (tree, tree);
4630 extern tree lower_bound_in_type (tree, tree);
4631 extern int operand_equal_for_phi_arg_p (const_tree, const_tree);
4632 extern tree call_expr_arg (tree, int);
4633 extern tree *call_expr_argp (tree, int);
4634 extern tree call_expr_arglist (tree);
4635 extern tree create_artificial_label (void);
4636 extern const char *get_name (tree);
4637 extern bool stdarg_p (tree);
4638 extern bool prototype_p (tree);
4639 extern bool auto_var_in_fn_p (const_tree, const_tree);
4642 extern tree unshare_expr (tree);
4646 extern void expand_expr_stmt (tree);
4647 extern int warn_if_unused_value (const_tree, location_t);
4648 extern void expand_label (tree);
4649 extern void expand_goto (tree);
4651 extern rtx expand_stack_save (void);
4652 extern void expand_stack_restore (tree);
4653 extern void expand_return (tree);
4656 extern void using_eh_for_cleanups (void);
4658 /* In fold-const.c */
4660 /* Non-zero if we are folding constants inside an initializer; zero
4662 extern int folding_initializer;
4664 /* Convert between trees and native memory representation. */
4665 extern int native_encode_expr (const_tree, unsigned char *, int);
4666 extern tree native_interpret_expr (tree, const unsigned char *, int);
4668 /* Fold constants as much as possible in an expression.
4669 Returns the simplified expression.
4670 Acts only on the top level of the expression;
4671 if the argument itself cannot be simplified, its
4672 subexpressions are not changed. */
4674 extern tree fold (tree);
4675 extern tree fold_unary (enum tree_code, tree, tree);
4676 extern tree fold_unary_ignore_overflow (enum tree_code, tree, tree);
4677 extern tree fold_binary (enum tree_code, tree, tree, tree);
4678 extern tree fold_ternary (enum tree_code, tree, tree, tree, tree);
4679 extern tree fold_build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
4680 #define fold_build1(c,t1,t2) fold_build1_stat (c, t1, t2 MEM_STAT_INFO)
4681 extern tree fold_build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
4682 #define fold_build2(c,t1,t2,t3) fold_build2_stat (c, t1, t2, t3 MEM_STAT_INFO)
4683 extern tree fold_build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
4684 #define fold_build3(c,t1,t2,t3,t4) fold_build3_stat (c, t1, t2, t3, t4 MEM_STAT_INFO)
4685 extern tree fold_build1_initializer (enum tree_code, tree, tree);
4686 extern tree fold_build2_initializer (enum tree_code, tree, tree, tree);
4687 extern tree fold_build3_initializer (enum tree_code, tree, tree, tree, tree);
4688 extern tree fold_build_call_array (tree, tree, int, tree *);
4689 extern tree fold_build_call_array_initializer (tree, tree, int, tree *);
4690 extern bool fold_convertible_p (const_tree, const_tree);
4691 extern tree fold_convert (tree, tree);
4692 extern tree fold_single_bit_test (enum tree_code, tree, tree, tree);
4693 extern tree fold_ignored_result (tree);
4694 extern tree fold_abs_const (tree, tree);
4695 extern tree fold_indirect_ref_1 (tree, tree);
4696 extern void fold_defer_overflow_warnings (void);
4697 extern void fold_undefer_overflow_warnings (bool, const_gimple, int);
4698 extern void fold_undefer_and_ignore_overflow_warnings (void);
4699 extern bool fold_deferring_overflow_warnings_p (void);
4700 extern tree maybe_fold_offset_to_reference (tree, tree, tree);
4701 extern tree maybe_fold_offset_to_address (tree, tree, tree);
4702 extern tree maybe_fold_stmt_addition (tree, tree, tree);
4704 extern tree force_fit_type_double (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4707 extern int fit_double_type (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4708 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, const_tree);
4709 extern int add_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4710 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4711 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4713 #define add_double(l1,h1,l2,h2,lv,hv) \
4714 add_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4715 extern int neg_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4716 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4717 extern int mul_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4718 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4719 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4721 #define mul_double(l1,h1,l2,h2,lv,hv) \
4722 mul_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4723 extern void lshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4724 HOST_WIDE_INT, unsigned int,
4725 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4726 extern void rshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4727 HOST_WIDE_INT, unsigned int,
4728 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4729 extern void lrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4730 HOST_WIDE_INT, unsigned int,
4731 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4732 extern void rrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4733 HOST_WIDE_INT, unsigned int,
4734 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4736 extern int div_and_round_double (enum tree_code, int, unsigned HOST_WIDE_INT,
4737 HOST_WIDE_INT, unsigned HOST_WIDE_INT,
4738 HOST_WIDE_INT, unsigned HOST_WIDE_INT *,
4739 HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
4742 enum operand_equal_flag
4748 extern int operand_equal_p (const_tree, const_tree, unsigned int);
4749 extern int multiple_of_p (tree, const_tree, const_tree);
4750 extern tree omit_one_operand (tree, tree, tree);
4751 extern tree omit_two_operands (tree, tree, tree, tree);
4752 extern tree invert_truthvalue (tree);
4753 extern tree fold_truth_not_expr (tree);
4754 extern tree fold_unary_to_constant (enum tree_code, tree, tree);
4755 extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree);
4756 extern tree fold_read_from_constant_string (tree);
4757 extern tree int_const_binop (enum tree_code, const_tree, const_tree, int);
4758 extern tree build_fold_addr_expr (tree);
4759 extern tree fold_build_cleanup_point_expr (tree type, tree expr);
4760 extern tree fold_strip_sign_ops (tree);
4761 extern tree build_fold_addr_expr_with_type (tree, tree);
4762 extern tree build_fold_indirect_ref (tree);
4763 extern tree fold_indirect_ref (tree);
4764 extern tree constant_boolean_node (int, tree);
4765 extern tree build_low_bits_mask (tree, unsigned);
4766 extern tree div_if_zero_remainder (enum tree_code, const_tree, const_tree);
4768 extern bool tree_swap_operands_p (const_tree, const_tree, bool);
4769 extern enum tree_code swap_tree_comparison (enum tree_code);
4771 extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
4772 extern enum tree_code invert_tree_comparison (enum tree_code, bool);
4774 extern bool tree_expr_nonzero_p (tree);
4775 extern bool tree_unary_nonzero_warnv_p (enum tree_code, tree, tree, bool *);
4776 extern bool tree_binary_nonzero_warnv_p (enum tree_code, tree, tree, tree op1,
4778 extern bool tree_single_nonzero_warnv_p (tree, bool *);
4779 extern bool tree_expr_nonzero_warnv_p (tree, bool *);
4780 extern bool tree_unary_nonnegative_warnv_p (enum tree_code, tree, tree, bool *);
4781 extern bool tree_binary_nonnegative_warnv_p (enum tree_code, tree, tree, tree,
4783 extern bool tree_single_nonnegative_warnv_p (tree t, bool *strict_overflow_p);
4784 extern bool tree_invalid_nonnegative_warnv_p (tree t, bool *strict_overflow_p);
4785 extern bool tree_call_nonnegative_warnv_p (tree, tree, tree, tree, bool *);
4787 extern bool tree_expr_nonzero_warnv_p (tree, bool *);
4789 extern bool fold_real_zero_addition_p (const_tree, const_tree, int);
4790 extern tree combine_comparisons (enum tree_code, enum tree_code,
4791 enum tree_code, tree, tree, tree);
4793 /* Return nonzero if CODE is a tree code that represents a truth value. */
4795 truth_value_p (enum tree_code code)
4797 return (TREE_CODE_CLASS (code) == tcc_comparison
4798 || code == TRUTH_AND_EXPR || code == TRUTH_ANDIF_EXPR
4799 || code == TRUTH_OR_EXPR || code == TRUTH_ORIF_EXPR
4800 || code == TRUTH_XOR_EXPR || code == TRUTH_NOT_EXPR);
4805 extern tree fold_call_expr (tree, bool);
4806 extern tree fold_builtin_fputs (tree, tree, bool, bool, tree);
4807 extern tree fold_builtin_strcpy (tree, tree, tree, tree);
4808 extern tree fold_builtin_strncpy (tree, tree, tree, tree, tree);
4809 extern tree fold_builtin_memory_chk (tree, tree, tree, tree, tree, tree, bool,
4810 enum built_in_function);
4811 extern tree fold_builtin_stxcpy_chk (tree, tree, tree, tree, tree, bool,
4812 enum built_in_function);
4813 extern tree fold_builtin_strncpy_chk (tree, tree, tree, tree, tree);
4814 extern tree fold_builtin_snprintf_chk (tree, tree, enum built_in_function);
4815 extern bool fold_builtin_next_arg (tree, bool);
4816 extern enum built_in_function builtin_mathfn_code (const_tree);
4817 extern tree build_function_call_expr (tree, tree);
4818 extern tree fold_builtin_call_array (tree, tree, int, tree *);
4819 extern void debug_fold_checksum (const_tree);
4820 extern tree build_call_expr (tree, int, ...);
4821 extern tree mathfn_built_in (tree, enum built_in_function fn);
4822 extern tree strip_float_extensions (tree);
4823 extern tree c_strlen (tree, int);
4824 extern tree std_gimplify_va_arg_expr (tree, tree, gimple_seq *, gimple_seq *);
4825 extern tree build_va_arg_indirect_ref (tree);
4826 extern tree build_string_literal (int, const char *);
4827 extern bool validate_arglist (const_tree, ...);
4828 extern rtx builtin_memset_read_str (void *, HOST_WIDE_INT, enum machine_mode);
4829 extern int get_pointer_alignment (tree, unsigned int);
4830 extern bool is_builtin_name(const char*);
4831 extern int get_object_alignment (tree, unsigned int, unsigned int);
4832 extern tree fold_call_stmt (gimple, bool);
4833 extern tree gimple_fold_builtin_snprintf_chk (gimple, tree, enum built_in_function);
4836 extern tree strip_float_extensions (tree);
4839 extern int really_constant_p (const_tree);
4840 extern bool decl_address_invariant_p (const_tree);
4841 extern bool decl_address_ip_invariant_p (const_tree);
4842 extern int int_fits_type_p (const_tree, const_tree);
4843 #ifndef GENERATOR_FILE
4844 extern void get_type_static_bounds (const_tree, mpz_t, mpz_t);
4846 extern bool variably_modified_type_p (tree, tree);
4847 extern int tree_log2 (const_tree);
4848 extern int tree_floor_log2 (const_tree);
4849 extern int simple_cst_equal (const_tree, const_tree);
4850 extern hashval_t iterative_hash_expr (const_tree, hashval_t);
4851 extern hashval_t iterative_hash_exprs_commutative (const_tree,
4852 const_tree, hashval_t);
4853 extern hashval_t iterative_hash_hashval_t (hashval_t, hashval_t);
4854 extern int compare_tree_int (const_tree, unsigned HOST_WIDE_INT);
4855 extern int type_list_equal (const_tree, const_tree);
4856 extern int chain_member (const_tree, const_tree);
4857 extern tree type_hash_lookup (unsigned int, tree);
4858 extern void type_hash_add (unsigned int, tree);
4859 extern int simple_cst_list_equal (const_tree, const_tree);
4860 extern void dump_tree_statistics (void);
4861 extern void expand_function_end (void);
4862 extern void expand_function_start (tree);
4863 extern void stack_protect_prologue (void);
4864 extern void stack_protect_epilogue (void);
4865 extern void recompute_tree_invariant_for_addr_expr (tree);
4866 extern bool needs_to_live_in_memory (const_tree);
4867 extern tree reconstruct_complex_type (tree, tree);
4869 extern int real_onep (const_tree);
4870 extern int real_twop (const_tree);
4871 extern int real_minus_onep (const_tree);
4872 extern void init_ttree (void);
4873 extern void build_common_tree_nodes (bool, bool);
4874 extern void build_common_tree_nodes_2 (int);
4875 extern void build_common_builtin_nodes (void);
4876 extern tree build_nonstandard_integer_type (unsigned HOST_WIDE_INT, int);
4877 extern tree build_range_type (tree, tree, tree);
4878 extern HOST_WIDE_INT int_cst_value (const_tree);
4879 extern tree build_addr (tree, tree);
4881 extern bool fields_compatible_p (const_tree, const_tree);
4882 extern tree find_compatible_field (tree, tree);
4884 extern void set_expr_locus (tree, source_location *);
4886 extern tree *tree_block (tree);
4887 extern location_t *block_nonartificial_location (tree);
4888 extern location_t tree_nonartificial_location (tree);
4891 extern void expand_main_function (void);
4892 extern void init_dummy_function_start (void);
4893 extern void expand_dummy_function_end (void);
4894 extern unsigned int init_function_for_compilation (void);
4895 extern void allocate_struct_function (tree, bool);
4896 extern void push_struct_function (tree fndecl);
4897 extern void init_function_start (tree);
4898 extern bool use_register_for_decl (const_tree);
4899 extern void generate_setjmp_warnings (void);
4900 extern void init_temp_slots (void);
4901 extern void free_temp_slots (void);
4902 extern void pop_temp_slots (void);
4903 extern void push_temp_slots (void);
4904 extern void preserve_temp_slots (rtx);
4905 extern int aggregate_value_p (const_tree, const_tree);
4906 extern void push_function_context (void);
4907 extern void pop_function_context (void);
4908 extern gimple_seq gimplify_parameters (void);
4910 /* In print-rtl.c */
4912 extern void print_rtl (FILE *, const_rtx);
4915 /* In print-tree.c */
4916 extern void debug_tree (tree);
4918 extern void dump_addr (FILE*, const char *, const void *);
4919 extern void print_node (FILE *, const char *, tree, int);
4920 extern void print_node_brief (FILE *, const char *, const_tree, int);
4921 extern void indent_to (FILE *, int);
4924 /* In tree-inline.c: */
4925 extern bool debug_find_tree (tree, tree);
4926 /* This is in tree-inline.c since the routine uses
4927 data structures from the inliner. */
4928 extern tree unsave_expr_now (tree);
4929 extern tree build_duplicate_type (tree);
4933 /* Nonzero if this is a call to a function whose return value depends
4934 solely on its arguments, has no side effects, and does not read
4935 global memory. This corresponds to TREE_READONLY for function
4937 #define ECF_CONST (1 << 0)
4938 /* Nonzero if this is a call to "pure" function (like const function,
4939 but may read memory. This corresponds to DECL_PURE_P for function
4941 #define ECF_PURE (1 << 1)
4942 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no
4943 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P
4944 for function decls.*/
4945 #define ECF_LOOPING_CONST_OR_PURE (1 << 2)
4946 /* Nonzero if this call will never return. */
4947 #define ECF_NORETURN (1 << 3)
4948 /* Nonzero if this is a call to malloc or a related function. */
4949 #define ECF_MALLOC (1 << 4)
4950 /* Nonzero if it is plausible that this is a call to alloca. */
4951 #define ECF_MAY_BE_ALLOCA (1 << 5)
4952 /* Nonzero if this is a call to a function that won't throw an exception. */
4953 #define ECF_NOTHROW (1 << 6)
4954 /* Nonzero if this is a call to setjmp or a related function. */
4955 #define ECF_RETURNS_TWICE (1 << 7)
4956 /* Nonzero if this call replaces the current stack frame. */
4957 #define ECF_SIBCALL (1 << 8)
4958 /* Function does not read or write memory (but may have side effects, so
4959 it does not necessarily fit ECF_CONST). */
4960 #define ECF_NOVOPS (1 << 9)
4962 extern int flags_from_decl_or_type (const_tree);
4963 extern int call_expr_flags (const_tree);
4965 extern int setjmp_call_p (const_tree);
4966 extern bool gimple_alloca_call_p (const_gimple);
4967 extern bool alloca_call_p (const_tree);
4968 extern bool must_pass_in_stack_var_size (enum machine_mode, const_tree);
4969 extern bool must_pass_in_stack_var_size_or_pad (enum machine_mode, const_tree);
4970 extern tree block_ultimate_origin (const_tree);
4974 extern const struct attribute_spec *lookup_attribute_spec (tree);
4976 /* Process the attributes listed in ATTRIBUTES and install them in *NODE,
4977 which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
4978 it should be modified in place; if a TYPE, a copy should be created
4979 unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
4980 information, in the form of a bitwise OR of flags in enum attribute_flags
4981 from tree.h. Depending on these flags, some attributes may be
4982 returned to be applied at a later stage (for example, to apply
4983 a decl attribute to the declaration rather than to its type). */
4984 extern tree decl_attributes (tree *, tree, int);
4986 /* In integrate.c */
4987 extern void set_decl_abstract_flags (tree, int);
4988 extern void set_decl_origin_self (tree);
4990 /* In stor-layout.c */
4991 extern void set_min_and_max_values_for_integral_type (tree, int, bool);
4992 extern void fixup_signed_type (tree);
4993 extern void internal_reference_types (void);
4994 extern unsigned int update_alignment_for_field (record_layout_info, tree,
4997 extern void make_decl_rtl (tree);
4998 extern void make_decl_one_only (tree);
4999 extern int supports_one_only (void);
5000 extern void resolve_unique_section (tree, int, int);
5001 extern void mark_referenced (tree);
5002 extern void mark_decl_referenced (tree);
5003 extern void notice_global_symbol (tree);
5004 extern void set_user_assembler_name (tree, const char *);
5005 extern void process_pending_assemble_externals (void);
5006 extern void finish_aliases_1 (void);
5007 extern void finish_aliases_2 (void);
5008 extern tree emutls_decl (tree);
5011 extern void expand_computed_goto (tree);
5012 extern bool parse_output_constraint (const char **, int, int, int,
5013 bool *, bool *, bool *);
5014 extern bool parse_input_constraint (const char **, int, int, int, int,
5015 const char * const *, bool *, bool *);
5016 extern void expand_asm_expr (tree);
5017 extern tree resolve_asm_operand_names (tree, tree, tree);
5018 extern void expand_case (tree);
5019 extern void expand_decl (tree);
5021 /* Silly ifdef to avoid having all includers depend on hard-reg-set.h. */
5022 extern tree tree_overlaps_hard_reg_set (tree, HARD_REG_SET *);
5026 /* Interface of the DWARF2 unwind info support. */
5028 /* Generate a new label for the CFI info to refer to. */
5030 extern char *dwarf2out_cfi_label (void);
5032 /* Entry point to update the canonical frame address (CFA). */
5034 extern void dwarf2out_def_cfa (const char *, unsigned, HOST_WIDE_INT);
5036 /* Add the CFI for saving a register window. */
5038 extern void dwarf2out_window_save (const char *);
5040 /* Add a CFI to update the running total of the size of arguments pushed
5043 extern void dwarf2out_args_size (const char *, HOST_WIDE_INT);
5045 /* Entry point for saving a register to the stack. */
5047 extern void dwarf2out_reg_save (const char *, unsigned, HOST_WIDE_INT);
5049 /* Entry point for saving the return address in the stack. */
5051 extern void dwarf2out_return_save (const char *, HOST_WIDE_INT);
5053 /* Entry point for saving the return address in a register. */
5055 extern void dwarf2out_return_reg (const char *, unsigned);
5057 /* Entry point for saving the first register into the second. */
5059 extern void dwarf2out_reg_save_reg (const char *, rtx, rtx);
5061 /* In tree-inline.c */
5063 /* The type of a set of already-visited pointers. Functions for creating
5064 and manipulating it are declared in pointer-set.h */
5065 struct pointer_set_t;
5067 /* The type of a callback function for walking over tree structure. */
5069 typedef tree (*walk_tree_fn) (tree *, int *, void *);
5071 /* The type of a callback function that represents a custom walk_tree. */
5073 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
5074 void *, struct pointer_set_t*);
5076 extern tree walk_tree_1 (tree*, walk_tree_fn, void*, struct pointer_set_t*,
5078 extern tree walk_tree_without_duplicates_1 (tree*, walk_tree_fn, void*,
5080 #define walk_tree(a,b,c,d) \
5081 walk_tree_1 (a, b, c, d, NULL)
5082 #define walk_tree_without_duplicates(a,b,c) \
5083 walk_tree_without_duplicates_1 (a, b, c, NULL)
5085 /* Assign the RTX to declaration. */
5087 extern void set_decl_rtl (tree, rtx);
5088 extern void set_decl_incoming_rtl (tree, rtx, bool);
5090 /* Enum and arrays used for tree allocation stats.
5091 Keep in sync with tree.c:tree_node_kind_names. */
5115 extern int tree_node_counts[];
5116 extern int tree_node_sizes[];
5118 /* True if we are in gimple form and the actions of the folders need to
5119 be restricted. False if we are not in gimple form and folding is not
5120 restricted to creating gimple expressions. */
5121 extern bool in_gimple_form;
5123 /* In tree-gimple.c. */
5124 extern tree get_base_address (tree t);
5126 /* In tree-vectorizer.c. */
5127 extern void vect_set_verbosity_level (const char *);
5131 struct GTY(()) tree_map_base {
5135 extern int tree_map_base_eq (const void *, const void *);
5136 extern unsigned int tree_map_base_hash (const void *);
5137 extern int tree_map_base_marked_p (const void *);
5138 extern bool list_equal_p (const_tree, const_tree);
5140 /* Map from a tree to another tree. */
5142 struct GTY(()) tree_map {
5143 struct tree_map_base base;
5148 #define tree_map_eq tree_map_base_eq
5149 extern unsigned int tree_map_hash (const void *);
5150 #define tree_map_marked_p tree_map_base_marked_p
5152 /* Map from a tree to an int. */
5154 struct GTY(()) tree_int_map {
5155 struct tree_map_base base;
5159 #define tree_int_map_eq tree_map_base_eq
5160 #define tree_int_map_hash tree_map_base_hash
5161 #define tree_int_map_marked_p tree_map_base_marked_p
5163 /* Map from a tree to initialization/finalization priorities. */
5165 struct GTY(()) tree_priority_map {
5166 struct tree_map_base base;
5171 #define tree_priority_map_eq tree_map_base_eq
5172 #define tree_priority_map_hash tree_map_base_hash
5173 #define tree_priority_map_marked_p tree_map_base_marked_p
5175 /* In tree-ssa-address.c. */
5176 extern tree tree_mem_ref_addr (tree, tree);
5177 extern void copy_mem_ref_info (tree, tree);
5180 extern bool ssa_name_nonnegative_p (const_tree);
5182 /* In tree-object-size.c. */
5183 extern void init_object_sizes (void);
5184 extern void fini_object_sizes (void);
5185 extern unsigned HOST_WIDE_INT compute_builtin_object_size (tree, int);
5188 extern unsigned HOST_WIDE_INT highest_pow2_factor (const_tree);
5190 /* In tree-inline.c. */
5192 void init_inline_once (void);
5194 /* Compute the number of operands in an expression node NODE. For
5195 tcc_vl_exp nodes like CALL_EXPRs, this is stored in the node itself,
5196 otherwise it is looked up from the node's code. */
5198 tree_operand_length (const_tree node)
5200 if (VL_EXP_CLASS_P (node))
5201 return VL_EXP_OPERAND_LENGTH (node);
5203 return TREE_CODE_LENGTH (TREE_CODE (node));
5206 /* Abstract iterators for CALL_EXPRs. These static inline definitions
5207 have to go towards the end of tree.h so that union tree_node is fully
5208 defined by this point. */
5210 /* Structure containing iterator state. */
5211 typedef struct GTY (()) call_expr_arg_iterator_d {
5212 tree t; /* the call_expr */
5213 int n; /* argument count */
5214 int i; /* next argument index */
5215 } call_expr_arg_iterator;
5217 typedef struct GTY (()) const_call_expr_arg_iterator_d {
5218 const_tree t; /* the call_expr */
5219 int n; /* argument count */
5220 int i; /* next argument index */
5221 } const_call_expr_arg_iterator;
5223 /* Initialize the abstract argument list iterator object ITER with the
5224 arguments from CALL_EXPR node EXP. */
5226 init_call_expr_arg_iterator (tree exp, call_expr_arg_iterator *iter)
5229 iter->n = call_expr_nargs (exp);
5234 init_const_call_expr_arg_iterator (const_tree exp, const_call_expr_arg_iterator *iter)
5237 iter->n = call_expr_nargs (exp);
5241 /* Return the next argument from abstract argument list iterator object ITER,
5242 and advance its state. Return NULL_TREE if there are no more arguments. */
5244 next_call_expr_arg (call_expr_arg_iterator *iter)
5247 if (iter->i >= iter->n)
5249 result = CALL_EXPR_ARG (iter->t, iter->i);
5254 static inline const_tree
5255 next_const_call_expr_arg (const_call_expr_arg_iterator *iter)
5258 if (iter->i >= iter->n)
5260 result = CALL_EXPR_ARG (iter->t, iter->i);
5265 /* Initialize the abstract argument list iterator object ITER, then advance
5266 past and return the first argument. Useful in for expressions, e.g.
5267 for (arg = first_call_expr_arg (exp, &iter); arg;
5268 arg = next_call_expr_arg (&iter)) */
5270 first_call_expr_arg (tree exp, call_expr_arg_iterator *iter)
5272 init_call_expr_arg_iterator (exp, iter);
5273 return next_call_expr_arg (iter);
5276 static inline const_tree
5277 first_const_call_expr_arg (const_tree exp, const_call_expr_arg_iterator *iter)
5279 init_const_call_expr_arg_iterator (exp, iter);
5280 return next_const_call_expr_arg (iter);
5283 /* Test whether there are more arguments in abstract argument list iterator
5284 ITER, without changing its state. */
5286 more_call_expr_args_p (const call_expr_arg_iterator *iter)
5288 return (iter->i < iter->n);
5292 more_const_call_expr_args_p (const const_call_expr_arg_iterator *iter)
5294 return (iter->i < iter->n);
5297 /* Iterate through each argument ARG of CALL_EXPR CALL, using variable ITER
5298 (of type call_expr_arg_iterator) to hold the iteration state. */
5299 #define FOR_EACH_CALL_EXPR_ARG(arg, iter, call) \
5300 for ((arg) = first_call_expr_arg ((call), &(iter)); (arg); \
5301 (arg) = next_call_expr_arg (&(iter)))
5303 #define FOR_EACH_CONST_CALL_EXPR_ARG(arg, iter, call) \
5304 for ((arg) = first_const_call_expr_arg ((call), &(iter)); (arg); \
5305 (arg) = next_const_call_expr_arg (&(iter)))
5307 #endif /* GCC_TREE_H */