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);
186 /* We have to be able to tell cgraph about the needed-ness of the target
187 of an alias. This requires that the decl have been defined. Aliases
188 that precede their definition have to be queued for later processing. */
190 typedef struct GTY(()) alias_pair
196 /* Define gc'd vector type. */
197 DEF_VEC_O(alias_pair);
198 DEF_VEC_ALLOC_O(alias_pair,gc);
200 extern GTY(()) VEC(alias_pair,gc) * alias_pairs;
203 /* Classify which part of the compiler has defined a given builtin function.
204 Note that we assume below that this is no more than two bits. */
213 /* Names for the above. */
214 extern const char *const built_in_class_names[4];
216 /* Codes that identify the various built in functions
217 so that expand_call can identify them quickly. */
219 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
220 enum built_in_function
222 #include "builtins.def"
224 /* Complex division routines in libgcc. These are done via builtins
225 because emit_library_call_value can't handle complex values. */
226 BUILT_IN_COMPLEX_MUL_MIN,
227 BUILT_IN_COMPLEX_MUL_MAX
228 = BUILT_IN_COMPLEX_MUL_MIN
229 + MAX_MODE_COMPLEX_FLOAT
230 - MIN_MODE_COMPLEX_FLOAT,
232 BUILT_IN_COMPLEX_DIV_MIN,
233 BUILT_IN_COMPLEX_DIV_MAX
234 = BUILT_IN_COMPLEX_DIV_MIN
235 + MAX_MODE_COMPLEX_FLOAT
236 - MIN_MODE_COMPLEX_FLOAT,
238 /* Upper bound on non-language-specific builtins. */
243 /* Names for the above. */
244 extern const char * built_in_names[(int) END_BUILTINS];
246 /* Helper macros for math builtins. */
248 #define BUILTIN_EXP10_P(FN) \
249 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
250 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
252 #define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
253 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
254 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
256 #define BUILTIN_SQRT_P(FN) \
257 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
259 #define BUILTIN_CBRT_P(FN) \
260 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
262 #define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
264 #define CASE_FLT_FN(FN) case FN: case FN##F: case FN##L
265 #define CASE_FLT_FN_REENT(FN) case FN##_R: case FN##F_R: case FN##L_R
266 #define CASE_INT_FN(FN) case FN: case FN##L: case FN##LL
268 /* An array of _DECL trees for the above. */
269 extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
270 extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
272 /* In an OMP_CLAUSE node. */
274 /* Number of operands and names for each clause. */
275 extern unsigned const char omp_clause_num_ops[];
276 extern const char * const omp_clause_code_name[];
278 /* Clause codes. Do not reorder, as this is used to index into the tables
279 omp_clause_num_ops and omp_clause_code_name. */
282 /* Clause zero is special-cased inside the parser
283 (c_parser_omp_variable_list). */
284 OMP_CLAUSE_ERROR = 0,
286 /* OpenMP clause: private (variable_list). */
289 /* OpenMP clause: shared (variable_list). */
292 /* OpenMP clause: firstprivate (variable_list). */
293 OMP_CLAUSE_FIRSTPRIVATE,
295 /* OpenMP clause: lastprivate (variable_list). */
296 OMP_CLAUSE_LASTPRIVATE,
298 /* OpenMP clause: reduction (operator:variable_list).
299 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
300 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
301 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
303 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
304 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. */
305 OMP_CLAUSE_REDUCTION,
307 /* OpenMP clause: copyin (variable_list). */
310 /* OpenMP clause: copyprivate (variable_list). */
311 OMP_CLAUSE_COPYPRIVATE,
313 /* OpenMP clause: if (scalar-expression). */
316 /* OpenMP clause: num_threads (integer-expression). */
317 OMP_CLAUSE_NUM_THREADS,
319 /* OpenMP clause: schedule. */
322 /* OpenMP clause: nowait. */
325 /* OpenMP clause: ordered. */
328 /* OpenMP clause: default. */
331 /* OpenMP clause: collapse (constant-integer-expression). */
334 /* OpenMP clause: untied. */
338 /* The definition of tree nodes fills the next several pages. */
340 /* A tree node can represent a data type, a variable, an expression
341 or a statement. Each node has a TREE_CODE which says what kind of
342 thing it represents. Some common codes are:
343 INTEGER_TYPE -- represents a type of integers.
344 ARRAY_TYPE -- represents a type of pointer.
345 VAR_DECL -- represents a declared variable.
346 INTEGER_CST -- represents a constant integer value.
347 PLUS_EXPR -- represents a sum (an expression).
349 As for the contents of a tree node: there are some fields
350 that all nodes share. Each TREE_CODE has various special-purpose
351 fields as well. The fields of a node are never accessed directly,
352 always through accessor macros. */
354 /* Every kind of tree node starts with this structure,
355 so all nodes have these fields.
357 See the accessor macros, defined below, for documentation of the
361 struct GTY(()) tree_base {
362 ENUM_BITFIELD(tree_code) code : 16;
364 unsigned side_effects_flag : 1;
365 unsigned constant_flag : 1;
366 unsigned addressable_flag : 1;
367 unsigned volatile_flag : 1;
368 unsigned readonly_flag : 1;
369 unsigned unsigned_flag : 1;
370 unsigned asm_written_flag: 1;
371 unsigned nowarning_flag : 1;
373 unsigned used_flag : 1;
374 unsigned nothrow_flag : 1;
375 unsigned static_flag : 1;
376 unsigned public_flag : 1;
377 unsigned private_flag : 1;
378 unsigned protected_flag : 1;
379 unsigned deprecated_flag : 1;
380 unsigned saturating_flag : 1;
382 unsigned default_def_flag : 1;
383 unsigned lang_flag_0 : 1;
384 unsigned lang_flag_1 : 1;
385 unsigned lang_flag_2 : 1;
386 unsigned lang_flag_3 : 1;
387 unsigned lang_flag_4 : 1;
388 unsigned lang_flag_5 : 1;
389 unsigned lang_flag_6 : 1;
391 unsigned visited : 1;
392 unsigned packed_flag : 1;
393 unsigned user_align : 1;
397 union tree_ann_d *ann;
400 struct GTY(()) tree_common {
401 struct tree_base base;
406 /* The following table lists the uses of each of the above flags and
407 for which types of nodes they are defined.
412 VAR_DECL, FUNCTION_DECL, FIELD_DECL, LABEL_DECL
414 CONSTRUCTOR, IDENTIFIER_NODE
415 STMT_EXPR, it means we want the result of the enclosed expression
417 CALL_EXPR_TAILCALL in
426 VAR_DECL, FUNCTION_DECL
429 TREE_NO_TRAMPOLINE in
435 TREE_SYMBOL_REFERENCED in
439 TARGET_EXPR, WITH_CLEANUP_EXPR
441 TRY_CATCH_IS_CLEANUP in
447 EH_FILTER_MUST_NOT_THROW in
450 TYPE_REF_CAN_ALIAS_ALL in
451 POINTER_TYPE, REFERENCE_TYPE
459 CALL_CANNOT_INLINE_P in
465 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
468 VAR_DECL, FUNCTION_DECL
474 CALL_EXPR_VA_ARG_PACK in
477 TYPE_CACHED_VALUES_P in
480 SAVE_EXPR_RESOLVED_P in
483 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
484 OMP_CLAUSE_LASTPRIVATE
486 OMP_CLAUSE_PRIVATE_DEBUG in
494 CALL_EXPR_RETURN_SLOT_OPT in
500 OMP_PARALLEL_COMBINED in
502 OMP_CLAUSE_PRIVATE_OUTER_REF in
526 TREE_THIS_VOLATILE in
549 TYPE_SIZES_GIMPLIFIED in
560 REGISTER_DEFS_IN_THIS_STMT in
561 all expressions (tree-into-ssa.c)
566 VAR_DECL, FUNCTION_DECL
567 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
568 BLOCK, SSA_NAME, STRING_CST
571 all expressions (tree-ssa-dce.c, tree-ssa-pre.c)
590 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
598 IDENTIFIER_TRANSPARENT_ALIAS in
601 STMT_IN_SSA_EDGE_WORKLIST in
602 all expressions (tree-ssa-propagate.c)
607 all trees (used liberally by many passes)
622 TYPE_VECTOR_OPAQUE in
625 SSA_NAME_IS_DEFAULT_DEF in
630 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
631 enum tree_node_structure_enum {
632 #include "treestruct.def"
637 /* Define accessors for the fields that all tree nodes have
638 (though some fields are not used for all kinds of nodes). */
640 /* The tree-code says what kind of node it is.
641 Codes are defined in tree.def. */
642 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->base.code)
643 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->base.code = (VALUE))
645 /* When checking is enabled, errors will be generated if a tree node
646 is accessed incorrectly. The macros die with a fatal error. */
647 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
649 #define TREE_CHECK(T, CODE) __extension__ \
650 ({ __typeof (T) const __t = (T); \
651 if (TREE_CODE (__t) != (CODE)) \
652 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
656 #define TREE_NOT_CHECK(T, CODE) __extension__ \
657 ({ __typeof (T) const __t = (T); \
658 if (TREE_CODE (__t) == (CODE)) \
659 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
663 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
664 ({ __typeof (T) const __t = (T); \
665 if (TREE_CODE (__t) != (CODE1) \
666 && TREE_CODE (__t) != (CODE2)) \
667 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
668 (CODE1), (CODE2), 0); \
671 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
672 ({ __typeof (T) const __t = (T); \
673 if (TREE_CODE (__t) == (CODE1) \
674 || TREE_CODE (__t) == (CODE2)) \
675 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
676 (CODE1), (CODE2), 0); \
679 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
680 ({ __typeof (T) const __t = (T); \
681 if (TREE_CODE (__t) != (CODE1) \
682 && TREE_CODE (__t) != (CODE2) \
683 && TREE_CODE (__t) != (CODE3)) \
684 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
685 (CODE1), (CODE2), (CODE3), 0); \
688 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
689 ({ __typeof (T) const __t = (T); \
690 if (TREE_CODE (__t) == (CODE1) \
691 || TREE_CODE (__t) == (CODE2) \
692 || TREE_CODE (__t) == (CODE3)) \
693 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
694 (CODE1), (CODE2), (CODE3), 0); \
697 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
698 ({ __typeof (T) const __t = (T); \
699 if (TREE_CODE (__t) != (CODE1) \
700 && TREE_CODE (__t) != (CODE2) \
701 && TREE_CODE (__t) != (CODE3) \
702 && TREE_CODE (__t) != (CODE4)) \
703 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
704 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
707 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
708 ({ __typeof (T) const __t = (T); \
709 if (TREE_CODE (__t) == (CODE1) \
710 || TREE_CODE (__t) == (CODE2) \
711 || TREE_CODE (__t) == (CODE3) \
712 || TREE_CODE (__t) == (CODE4)) \
713 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
714 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
717 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
718 ({ __typeof (T) const __t = (T); \
719 if (TREE_CODE (__t) != (CODE1) \
720 && TREE_CODE (__t) != (CODE2) \
721 && TREE_CODE (__t) != (CODE3) \
722 && TREE_CODE (__t) != (CODE4) \
723 && TREE_CODE (__t) != (CODE5)) \
724 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
725 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
728 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
729 ({ __typeof (T) const __t = (T); \
730 if (TREE_CODE (__t) == (CODE1) \
731 || TREE_CODE (__t) == (CODE2) \
732 || TREE_CODE (__t) == (CODE3) \
733 || TREE_CODE (__t) == (CODE4) \
734 || TREE_CODE (__t) == (CODE5)) \
735 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
736 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
739 #define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
740 ({ __typeof (T) const __t = (T); \
741 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
742 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
746 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
747 ({ __typeof (T) const __t = (T); \
748 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
749 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
753 #define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
754 ({ __typeof (T) const __t = (T); \
755 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
756 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
760 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
761 ({ __typeof (T) const __t = (T); \
762 if (TREE_CODE (__t) != OMP_CLAUSE) \
763 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
765 if (__t->omp_clause.code != (CODE)) \
766 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
770 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
771 ({ __typeof (T) const __t = (T); \
772 if (TREE_CODE (__t) != OMP_CLAUSE) \
773 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
775 if ((int) __t->omp_clause.code < (int) (CODE1) \
776 || (int) __t->omp_clause.code > (int) (CODE2)) \
777 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
778 __FUNCTION__, (CODE1), (CODE2)); \
781 /* These checks have to be special cased. */
782 #define EXPR_CHECK(T) __extension__ \
783 ({ __typeof (T) const __t = (T); \
784 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
785 if (!IS_EXPR_CODE_CLASS (__c)) \
786 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
790 /* These checks have to be special cased. */
791 #define NON_TYPE_CHECK(T) __extension__ \
792 ({ __typeof (T) const __t = (T); \
794 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
798 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
799 (*({__typeof (T) const __t = (T); \
800 const int __i = (I); \
801 if (TREE_CODE (__t) != TREE_VEC) \
802 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
804 if (__i < 0 || __i >= __t->vec.length) \
805 tree_vec_elt_check_failed (__i, __t->vec.length, \
806 __FILE__, __LINE__, __FUNCTION__); \
807 &__t->vec.a[__i]; }))
809 #define OMP_CLAUSE_ELT_CHECK(T, I) __extension__ \
810 (*({__typeof (T) const __t = (T); \
811 const int __i = (I); \
812 if (TREE_CODE (__t) != OMP_CLAUSE) \
813 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
815 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
816 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
818 &__t->omp_clause.ops[__i]; }))
820 /* Special checks for TREE_OPERANDs. */
821 #define TREE_OPERAND_CHECK(T, I) __extension__ \
822 (*({__typeof (T) const __t = EXPR_CHECK (T); \
823 const int __i = (I); \
824 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
825 tree_operand_check_failed (__i, __t, \
826 __FILE__, __LINE__, __FUNCTION__); \
827 &__t->exp.operands[__i]; }))
829 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
830 (*({__typeof (T) const __t = (T); \
831 const int __i = (I); \
832 if (TREE_CODE (__t) != CODE) \
833 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
834 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
835 tree_operand_check_failed (__i, __t, \
836 __FILE__, __LINE__, __FUNCTION__); \
837 &__t->exp.operands[__i]; }))
839 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
841 ({__typeof (T) const __t = (T); \
842 const int __i = (I); \
843 if (TREE_CODE (__t) != (CODE)) \
844 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
845 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
846 tree_operand_check_failed (__i, __t, \
847 __FILE__, __LINE__, __FUNCTION__); \
848 &__t->exp.operands[__i]; }))
850 /* Nodes are chained together for many purposes.
851 Types are chained together to record them for being output to the debugger
852 (see the function `chain_type').
853 Decls in the same scope are chained together to record the contents
855 Statement nodes for successive statements used to be chained together.
856 Often lists of things are represented by TREE_LIST nodes that
857 are chained together. */
859 #define TREE_CHAIN(NODE) __extension__ \
860 (*({__typeof (NODE) const __t = (NODE); \
861 &__t->common.chain; }))
863 /* In all nodes that are expressions, this is the data type of the expression.
864 In POINTER_TYPE nodes, this is the type that the pointer points to.
865 In ARRAY_TYPE nodes, this is the type of the elements.
866 In VECTOR_TYPE nodes, this is the type of the elements. */
867 #define TREE_TYPE(NODE) __extension__ \
868 (*({__typeof (NODE) const __t = (NODE); \
869 &__t->common.type; }))
871 extern void tree_contains_struct_check_failed (const_tree,
872 const enum tree_node_structure_enum,
873 const char *, int, const char *)
876 extern void tree_check_failed (const_tree, const char *, int, const char *,
877 ...) ATTRIBUTE_NORETURN;
878 extern void tree_not_check_failed (const_tree, const char *, int, const char *,
879 ...) ATTRIBUTE_NORETURN;
880 extern void tree_class_check_failed (const_tree, const enum tree_code_class,
881 const char *, int, const char *)
883 extern void tree_range_check_failed (const_tree, const char *, int,
884 const char *, enum tree_code,
886 extern void tree_not_class_check_failed (const_tree,
887 const enum tree_code_class,
888 const char *, int, const char *)
890 extern void tree_vec_elt_check_failed (int, int, const char *,
893 extern void phi_node_elt_check_failed (int, int, const char *,
896 extern void tree_operand_check_failed (int, const_tree,
897 const char *, int, const char *)
899 extern void omp_clause_check_failed (const_tree, const char *, int,
900 const char *, enum omp_clause_code)
902 extern void omp_clause_operand_check_failed (int, const_tree, const char *,
905 extern void omp_clause_range_check_failed (const_tree, const char *, int,
906 const char *, enum omp_clause_code,
907 enum omp_clause_code)
910 #else /* not ENABLE_TREE_CHECKING, or not gcc */
912 #define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
913 #define TREE_CHECK(T, CODE) (T)
914 #define TREE_NOT_CHECK(T, CODE) (T)
915 #define TREE_CHECK2(T, CODE1, CODE2) (T)
916 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
917 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
918 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
919 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
920 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
921 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
922 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
923 #define TREE_CLASS_CHECK(T, CODE) (T)
924 #define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
925 #define EXPR_CHECK(T) (T)
926 #define NON_TYPE_CHECK(T) (T)
927 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
928 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
929 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
930 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
931 #define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
932 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
933 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
935 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
936 #define TREE_TYPE(NODE) ((NODE)->common.type)
940 #define TREE_BLOCK(NODE) *(tree_block (NODE))
942 #include "tree-check.h"
944 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
945 #define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
946 #define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
947 #define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
948 #define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
949 #define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
950 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
951 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
952 #define VL_EXP_CHECK(T) TREE_CLASS_CHECK (T, tcc_vl_exp)
953 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
954 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
956 #define RECORD_OR_UNION_CHECK(T) \
957 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
958 #define NOT_RECORD_OR_UNION_CHECK(T) \
959 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
961 #define NUMERICAL_TYPE_CHECK(T) \
962 TREE_CHECK5 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE, \
965 /* Here is how primitive or already-canonicalized types' hash codes
967 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
969 /* A simple hash function for an arbitrary tree node. This must not be
970 used in hash tables which are saved to a PCH. */
971 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
973 /* Tests if CODE is a conversion expr (NOP_EXPR or CONVERT_EXPR). */
974 #define CONVERT_EXPR_CODE_P(CODE) \
975 ((CODE) == NOP_EXPR || (CODE) == CONVERT_EXPR)
977 /* Similarly, but accept an expressions instead of a tree code. */
978 #define CONVERT_EXPR_P(EXP) CONVERT_EXPR_CODE_P (TREE_CODE (EXP))
980 /* Generate case for NOP_EXPR, CONVERT_EXPR. */
982 #define CASE_CONVERT \
986 /* Given an expression as a tree, strip any conversion that generates
987 no instruction. Accepts both tree and const_tree arguments since
988 we are not modifying the tree itself. */
990 #define STRIP_NOPS(EXP) \
991 (EXP) = tree_strip_nop_conversions (CONST_CAST_TREE (EXP))
993 /* Like STRIP_NOPS, but don't let the signedness change either. */
995 #define STRIP_SIGN_NOPS(EXP) \
996 (EXP) = tree_strip_sign_nop_conversions (CONST_CAST_TREE (EXP))
998 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
1000 #define STRIP_TYPE_NOPS(EXP) \
1001 while ((CONVERT_EXPR_P (EXP) \
1002 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
1003 && TREE_OPERAND (EXP, 0) != error_mark_node \
1004 && (TREE_TYPE (EXP) \
1005 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
1006 (EXP) = TREE_OPERAND (EXP, 0)
1008 /* Remove unnecessary type conversions according to
1009 tree_ssa_useless_type_conversion. */
1011 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
1012 (EXP) = tree_ssa_strip_useless_type_conversions (EXP)
1014 /* Nonzero if TYPE represents an integral type. Note that we do not
1015 include COMPLEX types here. Keep these checks in ascending code
1018 #define INTEGRAL_TYPE_P(TYPE) \
1019 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
1020 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
1021 || TREE_CODE (TYPE) == INTEGER_TYPE)
1023 /* Nonzero if TYPE represents a non-saturating fixed-point type. */
1025 #define NON_SAT_FIXED_POINT_TYPE_P(TYPE) \
1026 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && !TYPE_SATURATING (TYPE))
1028 /* Nonzero if TYPE represents a saturating fixed-point type. */
1030 #define SAT_FIXED_POINT_TYPE_P(TYPE) \
1031 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && TYPE_SATURATING (TYPE))
1033 /* Nonzero if TYPE represents a fixed-point type. */
1035 #define FIXED_POINT_TYPE_P(TYPE) (TREE_CODE (TYPE) == FIXED_POINT_TYPE)
1037 /* Nonzero if TYPE represents a scalar floating-point type. */
1039 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
1041 /* Nonzero if TYPE represents a complex floating-point type. */
1043 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
1044 (TREE_CODE (TYPE) == COMPLEX_TYPE \
1045 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1047 /* Nonzero if TYPE represents a vector floating-point type. */
1049 #define VECTOR_FLOAT_TYPE_P(TYPE) \
1050 (TREE_CODE (TYPE) == VECTOR_TYPE \
1051 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1053 /* Nonzero if TYPE represents a floating-point type, including complex
1054 and vector floating-point types. The vector and complex check does
1055 not use the previous two macros to enable early folding. */
1057 #define FLOAT_TYPE_P(TYPE) \
1058 (SCALAR_FLOAT_TYPE_P (TYPE) \
1059 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
1060 || TREE_CODE (TYPE) == VECTOR_TYPE) \
1061 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
1063 /* Nonzero if TYPE represents a decimal floating-point type. */
1064 #define DECIMAL_FLOAT_TYPE_P(TYPE) \
1065 (SCALAR_FLOAT_TYPE_P (TYPE) \
1066 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
1068 /* Nonzero if TYPE represents an aggregate (multi-component) type.
1069 Keep these checks in ascending code order. */
1071 #define AGGREGATE_TYPE_P(TYPE) \
1072 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
1073 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
1075 /* Nonzero if TYPE represents a pointer or reference type.
1076 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
1077 ascending code order. */
1079 #define POINTER_TYPE_P(TYPE) \
1080 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
1082 /* Nonzero if this type is a complete type. */
1083 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
1085 /* Nonzero if this type is the (possibly qualified) void type. */
1086 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
1088 /* Nonzero if this type is complete or is cv void. */
1089 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
1090 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
1092 /* Nonzero if this type is complete or is an array with unspecified bound. */
1093 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1094 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1097 /* Define many boolean fields that all tree nodes have. */
1099 /* In VAR_DECL nodes, nonzero means address of this is needed.
1100 So it cannot be in a register.
1101 In a FUNCTION_DECL, nonzero means its address is needed.
1102 So it must be compiled even if it is an inline function.
1103 In a FIELD_DECL node, it means that the programmer is permitted to
1104 construct the address of this field. This is used for aliasing
1105 purposes: see record_component_aliases.
1106 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1107 In LABEL_DECL nodes, it means a goto for this label has been seen
1108 from a place outside all binding contours that restore stack levels.
1109 In ..._TYPE nodes, it means that objects of this type must
1110 be fully addressable. This means that pieces of this
1111 object cannot go into register parameters, for example.
1112 In IDENTIFIER_NODEs, this means that some extern decl for this name
1113 had its address taken. That matters for inline functions. */
1114 #define TREE_ADDRESSABLE(NODE) ((NODE)->base.addressable_flag)
1116 /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1117 exit of a function. Calls for which this is true are candidates for tail
1118 call optimizations. */
1119 #define CALL_EXPR_TAILCALL(NODE) \
1120 (CALL_EXPR_CHECK(NODE)->base.addressable_flag)
1122 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1123 CASE_LOW operand has been processed. */
1124 #define CASE_LOW_SEEN(NODE) \
1125 (CASE_LABEL_EXPR_CHECK (NODE)->base.addressable_flag)
1127 #define PREDICT_EXPR_OUTCOME(NODE) \
1128 ((enum prediction) (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag))
1129 #define SET_PREDICT_EXPR_OUTCOME(NODE, OUTCOME) \
1130 (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag = (int) OUTCOME)
1131 #define PREDICT_EXPR_PREDICTOR(NODE) \
1132 ((enum br_predictor)tree_low_cst (TREE_OPERAND (PREDICT_EXPR_CHECK (NODE), 0), 0))
1134 /* In a VAR_DECL, nonzero means allocate static storage.
1135 In a FUNCTION_DECL, nonzero if function has been defined.
1136 In a CONSTRUCTOR, nonzero means allocate static storage. */
1137 #define TREE_STATIC(NODE) ((NODE)->base.static_flag)
1139 /* In an ADDR_EXPR, nonzero means do not use a trampoline. */
1140 #define TREE_NO_TRAMPOLINE(NODE) (ADDR_EXPR_CHECK (NODE)->base.static_flag)
1142 /* In a TARGET_EXPR or WITH_CLEANUP_EXPR, means that the pertinent cleanup
1143 should only be executed if an exception is thrown, not on normal exit
1145 #define CLEANUP_EH_ONLY(NODE) ((NODE)->base.static_flag)
1147 /* In a TRY_CATCH_EXPR, means that the handler should be considered a
1148 separate cleanup in honor_protect_cleanup_actions. */
1149 #define TRY_CATCH_IS_CLEANUP(NODE) \
1150 (TRY_CATCH_EXPR_CHECK (NODE)->base.static_flag)
1152 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1153 CASE_HIGH operand has been processed. */
1154 #define CASE_HIGH_SEEN(NODE) \
1155 (CASE_LABEL_EXPR_CHECK (NODE)->base.static_flag)
1157 /* Used to mark a CALL_EXPR as not suitable for inlining. */
1158 #define CALL_CANNOT_INLINE_P(NODE) (CALL_EXPR_CHECK (NODE)->base.static_flag)
1160 /* In an expr node (usually a conversion) this means the node was made
1161 implicitly and should not lead to any sort of warning. In a decl node,
1162 warnings concerning the decl should be suppressed. This is used at
1163 least for used-before-set warnings, and it set after one warning is
1165 #define TREE_NO_WARNING(NODE) ((NODE)->base.nowarning_flag)
1167 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
1168 this string as an argument. */
1169 #define TREE_SYMBOL_REFERENCED(NODE) \
1170 (IDENTIFIER_NODE_CHECK (NODE)->base.static_flag)
1172 /* Nonzero in a pointer or reference type means the data pointed to
1173 by this type can alias anything. */
1174 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1175 (PTR_OR_REF_CHECK (NODE)->base.static_flag)
1177 /* In a MODIFY_EXPR, means that the store in the expression is nontemporal. */
1178 #define MOVE_NONTEMPORAL(NODE) \
1179 (EXPR_CHECK (NODE)->base.static_flag)
1181 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1182 there was an overflow in folding. */
1184 #define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->base.public_flag)
1186 /* TREE_OVERFLOW can only be true for EXPR of CONSTANT_CLASS_P. */
1188 #define TREE_OVERFLOW_P(EXPR) \
1189 (CONSTANT_CLASS_P (EXPR) && TREE_OVERFLOW (EXPR))
1191 /* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1192 nonzero means name is to be accessible from outside this translation unit.
1193 In an IDENTIFIER_NODE, nonzero means an external declaration
1194 accessible from outside this translation unit was previously seen
1195 for this name in an inner scope. */
1196 #define TREE_PUBLIC(NODE) ((NODE)->base.public_flag)
1198 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1199 of cached values, or is something else. */
1200 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->base.public_flag)
1202 /* In a SAVE_EXPR, indicates that the original expression has already
1203 been substituted with a VAR_DECL that contains the value. */
1204 #define SAVE_EXPR_RESOLVED_P(NODE) \
1205 (SAVE_EXPR_CHECK (NODE)->base.public_flag)
1207 /* Set on a CALL_EXPR if this stdarg call should be passed the argument
1209 #define CALL_EXPR_VA_ARG_PACK(NODE) \
1210 (CALL_EXPR_CHECK(NODE)->base.public_flag)
1212 /* In any expression, decl, or constant, nonzero means it has side effects or
1213 reevaluation of the whole expression could produce a different value.
1214 This is set if any subexpression is a function call, a side effect or a
1215 reference to a volatile variable. In a ..._DECL, this is set only if the
1216 declaration said `volatile'. This will never be set for a constant. */
1217 #define TREE_SIDE_EFFECTS(NODE) \
1218 (NON_TYPE_CHECK (NODE)->base.side_effects_flag)
1220 /* In a LABEL_DECL, nonzero means this label had its address taken
1221 and therefore can never be deleted and is a jump target for
1223 #define FORCED_LABEL(NODE) (LABEL_DECL_CHECK (NODE)->base.side_effects_flag)
1225 /* Nonzero means this expression is volatile in the C sense:
1226 its address should be of type `volatile WHATEVER *'.
1227 In other words, the declared item is volatile qualified.
1228 This is used in _DECL nodes and _REF nodes.
1229 On a FUNCTION_DECL node, this means the function does not
1230 return normally. This is the same effect as setting
1231 the attribute noreturn on the function in C.
1233 In a ..._TYPE node, means this type is volatile-qualified.
1234 But use TYPE_VOLATILE instead of this macro when the node is a type,
1235 because eventually we may make that a different bit.
1237 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1238 #define TREE_THIS_VOLATILE(NODE) ((NODE)->base.volatile_flag)
1240 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
1241 accessing the memory pointed to won't generate a trap. However,
1242 this only applies to an object when used appropriately: it doesn't
1243 mean that writing a READONLY mem won't trap. Similarly for
1244 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1246 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1247 (or slice of the array) always belongs to the range of the array.
1248 I.e. that the access will not trap, provided that the access to
1249 the base to the array will not trap. */
1250 #define TREE_THIS_NOTRAP(NODE) ((NODE)->base.nothrow_flag)
1252 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1253 nonzero means it may not be the lhs of an assignment.
1254 Nonzero in a FUNCTION_DECL means this function should be treated
1255 as "const" function (can only read its arguments). */
1256 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->base.readonly_flag)
1258 /* Value of expression is constant. Always on in all ..._CST nodes. May
1259 also appear in an expression or decl where the value is constant. */
1260 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->base.constant_flag)
1262 /* Nonzero if NODE, a type, has had its sizes gimplified. */
1263 #define TYPE_SIZES_GIMPLIFIED(NODE) \
1264 (TYPE_CHECK (NODE)->base.constant_flag)
1266 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1267 #define DECL_UNSIGNED(NODE) \
1268 (DECL_COMMON_CHECK (NODE)->base.unsigned_flag)
1270 /* In integral and pointer types, means an unsigned type. */
1271 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->base.unsigned_flag)
1273 /* Nonzero in a VAR_DECL or STRING_CST means assembler code has been written.
1274 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1275 This is interesting in an inline function, since it might not need
1276 to be compiled separately.
1277 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1278 if the debugging info for the type has been written.
1279 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1280 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1282 #define TREE_ASM_WRITTEN(NODE) ((NODE)->base.asm_written_flag)
1284 /* Nonzero in a _DECL if the name is used in its scope.
1285 Nonzero in an expr node means inhibit warning if value is unused.
1286 In IDENTIFIER_NODEs, this means that some extern decl for this name
1288 In a BLOCK, this means that the block contains variables that are used. */
1289 #define TREE_USED(NODE) ((NODE)->base.used_flag)
1291 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1292 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1293 #define TREE_NOTHROW(NODE) ((NODE)->base.nothrow_flag)
1295 /* In a CALL_EXPR, means that it's safe to use the target of the call
1296 expansion as the return slot for a call that returns in memory. */
1297 #define CALL_EXPR_RETURN_SLOT_OPT(NODE) \
1298 (CALL_EXPR_CHECK (NODE)->base.private_flag)
1300 /* In a RESULT_DECL, PARM_DECL and VAR_DECL, means that it is
1301 passed by invisible reference (and the TREE_TYPE is a pointer to the true
1303 #define DECL_BY_REFERENCE(NODE) \
1304 (TREE_CHECK3 (NODE, VAR_DECL, PARM_DECL, \
1305 RESULT_DECL)->decl_common.decl_by_reference_flag)
1307 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
1308 thunked-to function. */
1309 #define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->base.protected_flag)
1311 /* In a type, nonzero means that all objects of the type are guaranteed by the
1312 language or front-end to be properly aligned, so we can indicate that a MEM
1313 of this type is aligned at least to the alignment of the type, even if it
1314 doesn't appear that it is. We see this, for example, in object-oriented
1315 languages where a tag field may show this is an object of a more-aligned
1316 variant of the more generic type.
1318 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1320 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->base.nothrow_flag)
1322 /* Used in classes in C++. */
1323 #define TREE_PRIVATE(NODE) ((NODE)->base.private_flag)
1324 /* Used in classes in C++. */
1325 #define TREE_PROTECTED(NODE) ((NODE)->base.protected_flag)
1327 /* Nonzero in a _DECL if the use of the name is defined as a
1328 deprecated feature by __attribute__((deprecated)). */
1329 #define TREE_DEPRECATED(NODE) \
1330 ((NODE)->base.deprecated_flag)
1332 /* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1333 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1334 #define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1335 (IDENTIFIER_NODE_CHECK (NODE)->base.deprecated_flag)
1337 /* In fixed-point types, means a saturating type. */
1338 #define TYPE_SATURATING(NODE) ((NODE)->base.saturating_flag)
1340 /* These flags are available for each language front end to use internally. */
1341 #define TREE_LANG_FLAG_0(NODE) ((NODE)->base.lang_flag_0)
1342 #define TREE_LANG_FLAG_1(NODE) ((NODE)->base.lang_flag_1)
1343 #define TREE_LANG_FLAG_2(NODE) ((NODE)->base.lang_flag_2)
1344 #define TREE_LANG_FLAG_3(NODE) ((NODE)->base.lang_flag_3)
1345 #define TREE_LANG_FLAG_4(NODE) ((NODE)->base.lang_flag_4)
1346 #define TREE_LANG_FLAG_5(NODE) ((NODE)->base.lang_flag_5)
1347 #define TREE_LANG_FLAG_6(NODE) ((NODE)->base.lang_flag_6)
1349 /* Define additional fields and accessors for nodes representing constants. */
1351 /* In an INTEGER_CST node. These two together make a 2-word integer.
1352 If the data type is signed, the value is sign-extended to 2 words
1353 even though not all of them may really be in use.
1354 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1355 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1356 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1357 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1359 #define INT_CST_LT(A, B) \
1360 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1361 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1362 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1364 #define INT_CST_LT_UNSIGNED(A, B) \
1365 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1366 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1367 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1368 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1369 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1371 struct GTY(()) tree_int_cst {
1372 struct tree_common common;
1376 /* In a REAL_CST node. struct real_value is an opaque entity, with
1377 manipulators defined in real.h. We don't want tree.h depending on
1378 real.h and transitively on tm.h. */
1381 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1382 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1384 struct GTY(()) tree_real_cst {
1385 struct tree_common common;
1386 struct real_value * real_cst_ptr;
1389 /* In a FIXED_CST node. */
1392 #define TREE_FIXED_CST_PTR(NODE) (FIXED_CST_CHECK (NODE)->fixed_cst.fixed_cst_ptr)
1393 #define TREE_FIXED_CST(NODE) (*TREE_FIXED_CST_PTR (NODE))
1395 struct GTY(()) tree_fixed_cst {
1396 struct tree_common common;
1397 struct fixed_value * fixed_cst_ptr;
1400 /* In a STRING_CST */
1401 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1402 #define TREE_STRING_POINTER(NODE) \
1403 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1405 struct GTY(()) tree_string {
1406 struct tree_common common;
1411 /* In a COMPLEX_CST node. */
1412 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1413 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1415 struct GTY(()) tree_complex {
1416 struct tree_common common;
1421 /* In a VECTOR_CST node. */
1422 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1424 struct GTY(()) tree_vector {
1425 struct tree_common common;
1431 /* Define fields and accessors for some special-purpose tree nodes. */
1433 #define IDENTIFIER_LENGTH(NODE) \
1434 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1435 #define IDENTIFIER_POINTER(NODE) \
1436 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1437 #define IDENTIFIER_HASH_VALUE(NODE) \
1438 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1440 /* Translate a hash table identifier pointer to a tree_identifier
1441 pointer, and vice versa. */
1443 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1444 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1445 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1447 struct GTY(()) tree_identifier {
1448 struct tree_common common;
1449 struct ht_identifier id;
1452 /* In a TREE_LIST node. */
1453 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1454 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1456 struct GTY(()) tree_list {
1457 struct tree_common common;
1462 /* In a TREE_VEC node. */
1463 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1464 #define TREE_VEC_END(NODE) \
1465 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1467 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1469 struct GTY(()) tree_vec {
1470 struct tree_common common;
1472 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1475 /* In a CONSTRUCTOR node. */
1476 #define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1477 #define CONSTRUCTOR_ELT(NODE,IDX) \
1478 (VEC_index (constructor_elt, CONSTRUCTOR_ELTS (NODE), IDX))
1479 #define CONSTRUCTOR_NELTS(NODE) (VEC_length (constructor_elt, CONSTRUCTOR_ELTS (NODE)))
1481 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1482 value of each element (stored within VAL). IX must be a scratch variable
1483 of unsigned integer type. */
1484 #define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1485 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1487 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1491 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1492 the value of each element (stored within VAL) and its index (stored
1493 within INDEX). IX must be a scratch variable of unsigned integer type. */
1494 #define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1495 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1497 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1498 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1502 /* Append a new constructor element to V, with the specified INDEX and VAL. */
1503 #define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1505 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1506 _ce___->index = INDEX; \
1507 _ce___->value = VALUE; \
1510 /* True if NODE, a FIELD_DECL, is to be processed as a bitfield for
1511 constructor output purposes. */
1512 #define CONSTRUCTOR_BITFIELD_P(NODE) \
1513 (DECL_BIT_FIELD (FIELD_DECL_CHECK (NODE)) && DECL_MODE (NODE) != BLKmode)
1515 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1516 element. INDEX can optionally design the position of VALUE: in arrays,
1517 it is the index where VALUE has to be placed; in structures, it is the
1518 FIELD_DECL of the member. */
1519 typedef struct GTY(()) constructor_elt_d {
1524 DEF_VEC_O(constructor_elt);
1525 DEF_VEC_ALLOC_O(constructor_elt,gc);
1527 struct GTY(()) tree_constructor {
1528 struct tree_common common;
1529 VEC(constructor_elt,gc) *elts;
1532 /* Define fields and accessors for some nodes that represent expressions. */
1534 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1535 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1536 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1537 && integer_zerop (TREE_OPERAND (NODE, 0)))
1539 /* In ordinary expression nodes. */
1540 #define TREE_OPERAND_LENGTH(NODE) tree_operand_length (NODE)
1541 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1543 /* In a tcc_vl_exp node, operand 0 is an INT_CST node holding the operand
1544 length. Its value includes the length operand itself; that is,
1545 the minimum valid length is 1.
1546 Note that we have to bypass the use of TREE_OPERAND to access
1547 that field to avoid infinite recursion in expanding the macros. */
1548 #define VL_EXP_OPERAND_LENGTH(NODE) \
1549 ((int)TREE_INT_CST_LOW (VL_EXP_CHECK (NODE)->exp.operands[0]))
1551 /* Nonzero if is_gimple_debug() may possibly hold. */
1552 #define MAY_HAVE_DEBUG_STMTS (flag_var_tracking_assignments)
1554 /* In a LOOP_EXPR node. */
1555 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1557 /* The source location of this expression. Non-tree_exp nodes such as
1558 decls and constants can be shared among multiple locations, so
1560 #define EXPR_LOCATION(NODE) (EXPR_P ((NODE)) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1561 #define SET_EXPR_LOCATION(NODE, LOCUS) EXPR_CHECK ((NODE))->exp.locus = (LOCUS)
1562 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1563 #define EXPR_FILENAME(NODE) LOCATION_FILE (EXPR_CHECK ((NODE))->exp.locus)
1564 #define EXPR_LINENO(NODE) LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1566 /* True if a tree is an expression or statement that can have a
1568 #define CAN_HAVE_LOCATION_P(NODE) ((NODE) && EXPR_P (NODE))
1570 extern void protected_set_expr_location (tree, location_t);
1572 /* In a TARGET_EXPR node. */
1573 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1574 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1575 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1577 /* DECL_EXPR accessor. This gives access to the DECL associated with
1578 the given declaration statement. */
1579 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1581 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1583 /* COMPOUND_LITERAL_EXPR accessors. */
1584 #define COMPOUND_LITERAL_EXPR_DECL_EXPR(NODE) \
1585 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
1586 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
1587 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_EXPR (NODE))
1589 /* SWITCH_EXPR accessors. These give access to the condition, body and
1590 original condition type (before any compiler conversions)
1591 of the switch statement, respectively. */
1592 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1593 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1594 #define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1596 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1597 of a case label, respectively. */
1598 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1599 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1600 #define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1602 /* The operands of a TARGET_MEM_REF. */
1603 #define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1604 #define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1605 #define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1606 #define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1607 #define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1608 #define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1610 /* The operands of a BIND_EXPR. */
1611 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1612 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1613 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1615 /* GOTO_EXPR accessor. This gives access to the label associated with
1616 a goto statement. */
1617 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1619 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1620 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1621 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1623 #define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1624 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1625 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1626 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1627 /* Nonzero if we want to create an ASM_INPUT instead of an
1628 ASM_OPERAND with no operands. */
1629 #define ASM_INPUT_P(NODE) (ASM_EXPR_CHECK (NODE)->base.static_flag)
1630 #define ASM_VOLATILE_P(NODE) (ASM_EXPR_CHECK (NODE)->base.public_flag)
1632 /* COND_EXPR accessors. */
1633 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1634 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1635 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1637 /* Accessors for the chains of recurrences. */
1638 #define CHREC_VAR(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 0)
1639 #define CHREC_LEFT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 1)
1640 #define CHREC_RIGHT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 2)
1641 #define CHREC_VARIABLE(NODE) TREE_INT_CST_LOW (CHREC_VAR (NODE))
1643 /* LABEL_EXPR accessor. This gives access to the label associated with
1644 the given label expression. */
1645 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1647 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1648 accessors for SSA operands. */
1650 /* CATCH_EXPR accessors. */
1651 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1652 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1654 /* EH_FILTER_EXPR accessors. */
1655 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1656 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1657 #define EH_FILTER_MUST_NOT_THROW(NODE) \
1658 (EH_FILTER_EXPR_CHECK (NODE)->base.static_flag)
1660 /* OBJ_TYPE_REF accessors. */
1661 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1662 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1663 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1665 /* ASSERT_EXPR accessors. */
1666 #define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1667 #define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1669 /* CALL_EXPR accessors.
1671 #define CALL_EXPR_FN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 1)
1672 #define CALL_EXPR_STATIC_CHAIN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 2)
1673 #define CALL_EXPR_ARGS(NODE) call_expr_arglist (NODE)
1674 #define CALL_EXPR_ARG(NODE, I) TREE_OPERAND (CALL_EXPR_CHECK (NODE), (I) + 3)
1675 #define call_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
1677 /* CALL_EXPR_ARGP returns a pointer to the argument vector for NODE.
1678 We can't use &CALL_EXPR_ARG (NODE, 0) because that will complain if
1679 the argument count is zero when checking is enabled. Instead, do
1680 the pointer arithmetic to advance past the 3 fixed operands in a
1681 CALL_EXPR. That produces a valid pointer to just past the end of the
1682 operand array, even if it's not valid to dereference it. */
1683 #define CALL_EXPR_ARGP(NODE) \
1684 (&(TREE_OPERAND (CALL_EXPR_CHECK (NODE), 0)) + 3)
1686 /* OpenMP directive and clause accessors. */
1688 #define OMP_BODY(NODE) \
1689 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1690 #define OMP_CLAUSES(NODE) \
1691 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1693 #define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1694 #define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1696 #define OMP_TASK_BODY(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 0)
1697 #define OMP_TASK_CLAUSES(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 1)
1699 #define OMP_TASKREG_CHECK(NODE) TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_TASK)
1700 #define OMP_TASKREG_BODY(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 0)
1701 #define OMP_TASKREG_CLAUSES(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 1)
1703 #define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1704 #define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1705 #define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1706 #define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1707 #define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1708 #define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1710 #define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1711 #define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1713 #define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1715 #define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1716 #define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1718 #define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1720 #define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1722 #define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1723 #define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1725 #define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1726 #define OMP_CLAUSE_DECL(NODE) \
1727 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1728 OMP_CLAUSE_PRIVATE, \
1729 OMP_CLAUSE_COPYPRIVATE), 0)
1730 #define OMP_CLAUSE_HAS_LOCATION(NODE) \
1731 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.locus != UNKNOWN_LOCATION)
1732 #define OMP_CLAUSE_LOCATION(NODE) (OMP_CLAUSE_CHECK (NODE))->omp_clause.locus
1734 /* True on an OMP_SECTION statement that was the last lexical member.
1735 This status is meaningful in the implementation of lastprivate. */
1736 #define OMP_SECTION_LAST(NODE) \
1737 (OMP_SECTION_CHECK (NODE)->base.private_flag)
1739 /* True on an OMP_PARALLEL statement if it represents an explicit
1740 combined parallel work-sharing constructs. */
1741 #define OMP_PARALLEL_COMBINED(NODE) \
1742 (OMP_PARALLEL_CHECK (NODE)->base.private_flag)
1744 /* True on a PRIVATE clause if its decl is kept around for debugging
1745 information only and its DECL_VALUE_EXPR is supposed to point
1746 to what it has been remapped to. */
1747 #define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1748 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE)->base.public_flag)
1750 /* True on a PRIVATE clause if ctor needs access to outer region's
1752 #define OMP_CLAUSE_PRIVATE_OUTER_REF(NODE) \
1753 TREE_PRIVATE (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1755 /* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1756 decl is present in the chain. */
1757 #define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1758 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE)->base.public_flag)
1759 #define OMP_CLAUSE_LASTPRIVATE_STMT(NODE) \
1760 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, \
1761 OMP_CLAUSE_LASTPRIVATE),\
1763 #define OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ(NODE) \
1764 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1766 #define OMP_CLAUSE_IF_EXPR(NODE) \
1767 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1768 #define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1769 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1770 #define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1771 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1773 #define OMP_CLAUSE_COLLAPSE_EXPR(NODE) \
1774 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 0)
1775 #define OMP_CLAUSE_COLLAPSE_ITERVAR(NODE) \
1776 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 1)
1777 #define OMP_CLAUSE_COLLAPSE_COUNT(NODE) \
1778 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 2)
1780 #define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1781 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1782 #define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1783 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1784 #define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1785 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1786 #define OMP_CLAUSE_REDUCTION_GIMPLE_INIT(NODE) \
1787 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1788 #define OMP_CLAUSE_REDUCTION_GIMPLE_MERGE(NODE) \
1789 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_merge
1790 #define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1791 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1793 enum omp_clause_schedule_kind
1795 OMP_CLAUSE_SCHEDULE_STATIC,
1796 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1797 OMP_CLAUSE_SCHEDULE_GUIDED,
1798 OMP_CLAUSE_SCHEDULE_AUTO,
1799 OMP_CLAUSE_SCHEDULE_RUNTIME
1802 #define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1803 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1805 enum omp_clause_default_kind
1807 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1808 OMP_CLAUSE_DEFAULT_SHARED,
1809 OMP_CLAUSE_DEFAULT_NONE,
1810 OMP_CLAUSE_DEFAULT_PRIVATE,
1811 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
1814 #define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1815 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1817 struct GTY(()) tree_exp {
1818 struct tree_common common;
1821 tree GTY ((special ("tree_exp"),
1822 desc ("TREE_CODE ((tree) &%0)")))
1826 /* SSA_NAME accessors. */
1828 /* Returns the variable being referenced. Once released, this is the
1829 only field that can be relied upon. */
1830 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1832 /* Returns the statement which defines this SSA name. */
1833 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->ssa_name.def_stmt
1835 /* Returns the SSA version number of this SSA name. Note that in
1836 tree SSA, version numbers are not per variable and may be recycled. */
1837 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1839 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1840 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1842 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1843 SSA_NAME_CHECK (NODE)->base.asm_written_flag
1845 /* Nonzero if this SSA_NAME expression is currently on the free list of
1846 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1847 has no meaning for an SSA_NAME. */
1848 #define SSA_NAME_IN_FREE_LIST(NODE) \
1849 SSA_NAME_CHECK (NODE)->base.nothrow_flag
1851 /* Nonzero if this SSA_NAME is the default definition for the
1852 underlying symbol. A default SSA name is created for symbol S if
1853 the very first reference to S in the function is a read operation.
1854 Default definitions are always created by an empty statement and
1855 belong to no basic block. */
1856 #define SSA_NAME_IS_DEFAULT_DEF(NODE) \
1857 SSA_NAME_CHECK (NODE)->base.default_def_flag
1859 /* Attributes for SSA_NAMEs for pointer-type variables. */
1860 #define SSA_NAME_PTR_INFO(N) \
1861 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1863 #ifndef _TREE_FLOW_H
1864 struct ptr_info_def;
1869 /* Immediate use linking structure. This structure is used for maintaining
1870 a doubly linked list of uses of an SSA_NAME. */
1871 typedef struct GTY(()) ssa_use_operand_d {
1872 struct ssa_use_operand_d* GTY((skip(""))) prev;
1873 struct ssa_use_operand_d* GTY((skip(""))) next;
1874 /* Immediate uses for a given SSA name are maintained as a cyclic
1875 list. To recognize the root of this list, the location field
1876 needs to point to the original SSA name. Since statements and
1877 SSA names are of different data types, we need this union. See
1878 the explanation in struct immediate_use_iterator_d. */
1879 union { gimple stmt; tree ssa_name; } GTY((skip(""))) loc;
1880 tree *GTY((skip(""))) use;
1881 } ssa_use_operand_t;
1883 /* Return the immediate_use information for an SSA_NAME. */
1884 #define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1886 struct GTY(()) tree_ssa_name {
1887 struct tree_common common;
1889 /* _DECL wrapped by this SSA name. */
1892 /* Statement that defines this SSA name. */
1895 /* SSA version number. */
1896 unsigned int version;
1898 /* Pointer attributes used for alias analysis. */
1899 struct ptr_info_def *ptr_info;
1901 /* Immediate uses list for this SSA_NAME. */
1902 struct ssa_use_operand_d imm_uses;
1905 struct GTY(()) phi_arg_d {
1906 /* imm_use MUST be the first element in struct because we do some
1907 pointer arithmetic with it. See phi_arg_index_from_use. */
1908 struct ssa_use_operand_d imm_use;
1914 #define OMP_CLAUSE_CODE(NODE) \
1915 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1917 #define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1918 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1920 #define OMP_CLAUSE_CODE(NODE) \
1921 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1923 #define OMP_CLAUSE_OPERAND(NODE, I) \
1924 OMP_CLAUSE_ELT_CHECK (NODE, I)
1926 struct GTY(()) tree_omp_clause {
1927 struct tree_common common;
1929 enum omp_clause_code code;
1930 union omp_clause_subcode {
1931 enum omp_clause_default_kind default_kind;
1932 enum omp_clause_schedule_kind schedule_kind;
1933 enum tree_code reduction_code;
1934 } GTY ((skip)) subcode;
1936 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1938 gimple_seq gimple_reduction_init;
1939 gimple_seq gimple_reduction_merge;
1941 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1945 struct varray_head_tag;
1947 /* In a BLOCK node. */
1948 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1949 #define BLOCK_NONLOCALIZED_VARS(NODE) (BLOCK_CHECK (NODE)->block.nonlocalized_vars)
1950 #define BLOCK_NUM_NONLOCALIZED_VARS(NODE) VEC_length (tree, BLOCK_NONLOCALIZED_VARS (NODE))
1951 #define BLOCK_NONLOCALIZED_VAR(NODE,N) VEC_index (tree, BLOCK_NONLOCALIZED_VARS (NODE), N)
1952 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1953 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1954 /* Note: when changing this, make sure to find the places
1955 that use chainon or nreverse. */
1956 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1957 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1958 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1960 /* An index number for this block. These values are not guaranteed to
1961 be unique across functions -- whether or not they are depends on
1962 the debugging output format in use. */
1963 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1965 /* If block reordering splits a lexical block into discontiguous
1966 address ranges, we'll make a copy of the original block.
1968 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1969 In that case, we have one source block that has been replicated
1970 (through inlining or unrolling) into many logical blocks, and that
1971 these logical blocks have different physical variables in them.
1973 In this case, we have one logical block split into several
1974 non-contiguous address ranges. Most debug formats can't actually
1975 represent this idea directly, so we fake it by creating multiple
1976 logical blocks with the same variables in them. However, for those
1977 that do support non-contiguous regions, these allow the original
1978 logical block to be reconstructed, along with the set of address
1981 One of the logical block fragments is arbitrarily chosen to be
1982 the ORIGIN. The other fragments will point to the origin via
1983 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1984 be null. The list of fragments will be chained through
1985 BLOCK_FRAGMENT_CHAIN from the origin. */
1987 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1988 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1990 /* For an inlined function, this gives the location where it was called
1991 from. This is only set in the top level block, which corresponds to the
1992 inlined function scope. This is used in the debug output routines. */
1994 #define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1996 struct GTY(()) tree_block {
1997 struct tree_common common;
1999 unsigned abstract_flag : 1;
2000 unsigned block_num : 31;
2005 VEC(tree,gc) *nonlocalized_vars;
2009 tree abstract_origin;
2010 tree fragment_origin;
2011 tree fragment_chain;
2014 /* Define fields and accessors for nodes representing data types. */
2016 /* See tree.def for documentation of the use of these fields.
2017 Look at the documentation of the various ..._TYPE tree codes.
2019 Note that the type.values, type.minval, and type.maxval fields are
2020 overloaded and used for different macros in different kinds of types.
2021 Each macro must check to ensure the tree node is of the proper kind of
2022 type. Note also that some of the front-ends also overload these fields,
2023 so they must be checked as well. */
2025 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
2026 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
2027 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
2028 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
2029 #define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
2030 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
2031 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
2032 #define TYPE_ORIG_SIZE_TYPE(NODE) \
2033 (INTEGER_TYPE_CHECK (NODE)->type.values \
2034 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
2035 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
2036 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
2037 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
2038 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
2039 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
2040 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
2041 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
2042 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
2043 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
2044 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
2045 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
2046 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
2047 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
2048 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
2049 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
2050 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
2051 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
2052 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
2053 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
2054 #define TYPE_MAXVAL(NODE) (TYPE_CHECK (NODE)->type.maxval)
2055 #define TYPE_MINVAL(NODE) (TYPE_CHECK (NODE)->type.minval)
2057 /* Vector types need to check target flags to determine type. */
2058 extern enum machine_mode vector_type_mode (const_tree);
2059 #define TYPE_MODE(NODE) \
2060 (TREE_CODE (TYPE_CHECK (NODE)) == VECTOR_TYPE \
2061 ? vector_type_mode (NODE) : (NODE)->type.mode)
2062 #define SET_TYPE_MODE(NODE, MODE) \
2063 (TYPE_CHECK (NODE)->type.mode = (MODE))
2065 /* The "canonical" type for this type node, which can be used to
2066 compare the type for equality with another type. If two types are
2067 equal (based on the semantics of the language), then they will have
2068 equivalent TYPE_CANONICAL entries.
2070 As a special case, if TYPE_CANONICAL is NULL_TREE, then it cannot
2071 be used for comparison against other types. Instead, the type is
2072 said to require structural equality checks, described in
2073 TYPE_STRUCTURAL_EQUALITY_P. */
2074 #define TYPE_CANONICAL(NODE) (TYPE_CHECK (NODE)->type.canonical)
2075 /* Indicates that the type node requires structural equality
2076 checks. The compiler will need to look at the composition of the
2077 type to determine whether it is equal to another type, rather than
2078 just comparing canonical type pointers. For instance, we would need
2079 to look at the return and parameter types of a FUNCTION_TYPE
2081 #define TYPE_STRUCTURAL_EQUALITY_P(NODE) (TYPE_CANONICAL (NODE) == NULL_TREE)
2082 /* Sets the TYPE_CANONICAL field to NULL_TREE, indicating that the
2083 type node requires structural equality. */
2084 #define SET_TYPE_STRUCTURAL_EQUALITY(NODE) (TYPE_CANONICAL (NODE) = NULL_TREE)
2085 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
2086 #define TYPE_IBIT(NODE) (GET_MODE_IBIT (TYPE_MODE (NODE)))
2087 #define TYPE_FBIT(NODE) (GET_MODE_FBIT (TYPE_MODE (NODE)))
2089 /* For a VECTOR_TYPE node, this describes a different type which is emitted
2090 in the debugging output. We use this to describe a vector as a
2091 structure containing an array. */
2092 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
2094 /* For record and union types, information about this type, as a base type
2096 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2098 /* For non record and union types, used in a language-dependent way. */
2099 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2101 /* The (language-specific) typed-based alias set for this type.
2102 Objects whose TYPE_ALIAS_SETs are different cannot alias each
2103 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
2104 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
2105 type can alias objects of any type. */
2106 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
2108 /* Nonzero iff the typed-based alias set for this type has been
2110 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
2112 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
2114 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
2116 /* The alignment necessary for objects of this type.
2117 The value is an int, measured in bits. */
2118 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
2120 /* 1 if the alignment for this type was requested by "aligned" attribute,
2121 0 if it is the default for this type. */
2122 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->common.base.user_align)
2124 /* The alignment for NODE, in bytes. */
2125 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
2127 /* If your language allows you to declare types, and you want debug info
2128 for them, then you need to generate corresponding TYPE_DECL nodes.
2129 These "stub" TYPE_DECL nodes have no name, and simply point at the
2130 type node. You then set the TYPE_STUB_DECL field of the type node
2131 to point back at the TYPE_DECL node. This allows the debug routines
2132 to know that the two nodes represent the same type, so that we only
2133 get one debug info record for them. */
2134 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
2136 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
2137 has BLKmode only because it lacks the alignment requirement for
2139 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
2141 /* In an INTEGER_TYPE, it means the type represents a size. We use
2142 this both for validity checking and to permit optimizations that
2143 are unsafe for other types. Note that the C `size_t' type should
2144 *not* have this flag set. The `size_t' type is simply a typedef
2145 for an ordinary integer type that happens to be the type of an
2146 expression returned by `sizeof'; `size_t' has no special
2147 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
2148 always actual sizes. */
2149 #define TYPE_IS_SIZETYPE(NODE) \
2150 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
2152 /* Nonzero in a type considered volatile as a whole. */
2153 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->base.volatile_flag)
2155 /* Means this type is const-qualified. */
2156 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->base.readonly_flag)
2158 /* If nonzero, this type is `restrict'-qualified, in the C sense of
2160 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2162 /* There is a TYPE_QUAL value for each type qualifier. They can be
2163 combined by bitwise-or to form the complete set of qualifiers for a
2166 #define TYPE_UNQUALIFIED 0x0
2167 #define TYPE_QUAL_CONST 0x1
2168 #define TYPE_QUAL_VOLATILE 0x2
2169 #define TYPE_QUAL_RESTRICT 0x4
2171 /* The set of type qualifiers for this type. */
2172 #define TYPE_QUALS(NODE) \
2173 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2174 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2175 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2177 /* These flags are available for each language front end to use internally. */
2178 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2179 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2180 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2181 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2182 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2183 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2184 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2186 /* Used to keep track of visited nodes in tree traversals. This is set to
2187 0 by copy_node and make_node. */
2188 #define TREE_VISITED(NODE) ((NODE)->base.visited)
2190 /* If set in an ARRAY_TYPE, indicates a string type (for languages
2191 that distinguish string from array of char).
2192 If set in a INTEGER_TYPE, indicates a character type. */
2193 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2195 /* If non-NULL, this is an upper bound of the size (in bytes) of an
2196 object of the given ARRAY_TYPE. This allows temporaries to be
2198 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2199 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2201 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2202 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2203 (((unsigned HOST_WIDE_INT) 1) \
2204 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2206 /* Set precision to n when we have 2^n sub-parts of the vector. */
2207 #define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2208 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2210 /* Nonzero in a VECTOR_TYPE if the frontends should not emit warnings
2211 about missing conversions to other vector types of the same size. */
2212 #define TYPE_VECTOR_OPAQUE(NODE) \
2213 (VECTOR_TYPE_CHECK (NODE)->base.default_def_flag)
2215 /* Indicates that objects of this type must be initialized by calling a
2216 function when they are created. */
2217 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
2218 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2220 /* Indicates that objects of this type (a UNION_TYPE), should be passed
2221 the same way that the first union alternative would be passed. */
2222 #define TYPE_TRANSPARENT_UNION(NODE) \
2223 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2225 /* For an ARRAY_TYPE, indicates that it is not permitted to take the
2226 address of a component of the type. This is the counterpart of
2227 DECL_NONADDRESSABLE_P for arrays, see the definition of this flag. */
2228 #define TYPE_NONALIASED_COMPONENT(NODE) \
2229 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2231 /* Indicated that objects of this type should be laid out in as
2232 compact a way as possible. */
2233 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->common.base.packed_flag)
2235 /* Used by type_contains_placeholder_p to avoid recomputation.
2236 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2237 this field directly. */
2238 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2239 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2243 struct GTY(()) tree_type {
2244 struct tree_common common;
2251 unsigned int precision : 10;
2252 unsigned no_force_blk_flag : 1;
2253 unsigned needs_constructing_flag : 1;
2254 unsigned transparent_union_flag : 1;
2255 unsigned restrict_flag : 1;
2256 unsigned contains_placeholder_bits : 2;
2258 ENUM_BITFIELD(machine_mode) mode : 8;
2260 unsigned string_flag : 1;
2261 unsigned lang_flag_0 : 1;
2262 unsigned lang_flag_1 : 1;
2263 unsigned lang_flag_2 : 1;
2264 unsigned lang_flag_3 : 1;
2265 unsigned lang_flag_4 : 1;
2266 unsigned lang_flag_5 : 1;
2267 unsigned lang_flag_6 : 1;
2270 alias_set_type alias_set;
2273 union tree_type_symtab {
2274 int GTY ((tag ("0"))) address;
2275 const char * GTY ((tag ("1"))) pointer;
2276 struct die_struct * GTY ((tag ("2"))) die;
2277 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2278 descbits ("2"))) symtab;
2287 /* Points to a structure whose details depend on the language in use. */
2288 struct lang_type *lang_specific;
2291 /* Define accessor macros for information about type inheritance
2294 A "basetype" means a particular usage of a data type for inheritance
2295 in another type. Each such basetype usage has its own "binfo"
2296 object to describe it. The binfo object is a TREE_VEC node.
2298 Inheritance is represented by the binfo nodes allocated for a
2299 given type. For example, given types C and D, such that D is
2300 inherited by C, 3 binfo nodes will be allocated: one for describing
2301 the binfo properties of C, similarly one for D, and one for
2302 describing the binfo properties of D as a base type for C.
2303 Thus, given a pointer to class C, one can get a pointer to the binfo
2304 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2306 /* BINFO specific flags. */
2308 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
2309 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->base.static_flag)
2311 /* Flags for language dependent use. */
2312 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2313 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2314 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2315 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2316 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2317 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2318 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2320 /* The actual data type node being inherited in this basetype. */
2321 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2323 /* The offset where this basetype appears in its containing type.
2324 BINFO_OFFSET slot holds the offset (in bytes)
2325 from the base of the complete object to the base of the part of the
2326 object that is allocated on behalf of this `type'.
2327 This is always 0 except when there is multiple inheritance. */
2329 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2330 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2332 /* The virtual function table belonging to this basetype. Virtual
2333 function tables provide a mechanism for run-time method dispatching.
2334 The entries of a virtual function table are language-dependent. */
2336 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2338 /* The virtual functions in the virtual function table. This is
2339 a TREE_LIST that is used as an initial approximation for building
2340 a virtual function table for this basetype. */
2341 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2343 /* A vector of binfos for the direct basetypes inherited by this
2346 If this basetype describes type D as inherited in C, and if the
2347 basetypes of D are E and F, then this vector contains binfos for
2348 inheritance of E and F by C. */
2349 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2351 /* The number of basetypes for NODE. */
2352 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2354 /* Accessor macro to get to the Nth base binfo of this binfo. */
2355 #define BINFO_BASE_BINFO(NODE,N) \
2356 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2357 #define BINFO_BASE_ITERATE(NODE,N,B) \
2358 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2359 #define BINFO_BASE_APPEND(NODE,T) \
2360 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2362 /* For a BINFO record describing a virtual base class, i.e., one where
2363 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2364 base. The actual contents are language-dependent. In the C++
2365 front-end this field is an INTEGER_CST giving an offset into the
2366 vtable where the offset to the virtual base can be found. */
2367 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2369 /* Indicates the accesses this binfo has to its bases. The values are
2370 access_public_node, access_protected_node or access_private_node.
2371 If this array is not present, public access is implied. */
2372 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2374 #define BINFO_BASE_ACCESS(NODE,N) \
2375 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2376 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2377 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2379 /* The index in the VTT where this subobject's sub-VTT can be found.
2380 NULL_TREE if there is no sub-VTT. */
2381 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2383 /* The index in the VTT where the vptr for this subobject can be
2384 found. NULL_TREE if there is no secondary vptr in the VTT. */
2385 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2387 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2388 inheriting this base for non-virtual bases. For virtual bases it
2389 points either to the binfo for which this is a primary binfo, or to
2390 the binfo of the most derived type. */
2391 #define BINFO_INHERITANCE_CHAIN(NODE) \
2392 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2394 struct GTY (()) tree_binfo {
2395 struct tree_common common;
2401 VEC(tree,gc) *base_accesses;
2407 VEC(tree,none) base_binfos;
2411 /* Define fields and accessors for nodes representing declared names. */
2413 /* Nonzero if DECL represents a variable for the SSA passes. */
2414 #define SSA_VAR_P(DECL) \
2415 (TREE_CODE (DECL) == VAR_DECL \
2416 || TREE_CODE (DECL) == PARM_DECL \
2417 || TREE_CODE (DECL) == RESULT_DECL \
2418 || (TREE_CODE (DECL) == SSA_NAME \
2419 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2420 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2421 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
2426 /* Enumerate visibility settings. */
2427 #ifndef SYMBOL_VISIBILITY_DEFINED
2428 #define SYMBOL_VISIBILITY_DEFINED
2429 enum symbol_visibility
2432 VISIBILITY_PROTECTED,
2441 /* This is the name of the object as written by the user.
2442 It is an IDENTIFIER_NODE. */
2443 #define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2445 /* Every ..._DECL node gets a unique number. */
2446 #define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2448 /* These two fields describe where in the source code the declaration
2449 was. If the declaration appears in several places (as for a C
2450 function that is declared first and then defined later), this
2451 information should refer to the definition. */
2452 #define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2453 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2454 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2455 #define DECL_IS_BUILTIN(DECL) \
2456 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2458 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2459 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2460 PARM_DECL, FUNCTION_DECL, LABEL_DECL, RESULT_DECL, and CONST_DECL
2461 nodes, this points to either the FUNCTION_DECL for the containing
2462 function, the RECORD_TYPE or UNION_TYPE for the containing type, or
2463 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2465 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2466 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2467 struct GTY(()) tree_decl_minimal {
2468 struct tree_common common;
2476 /* For any sort of a ..._DECL node, this points to the original (abstract)
2477 decl node which this decl is an instance of, or else it is NULL indicating
2478 that this decl is not an instance of some other decl. For example,
2479 in a nested declaration of an inline function, this points back to the
2481 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2483 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2484 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2485 #define DECL_ORIGIN(NODE) \
2486 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2488 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2489 inline instance of some original (abstract) decl from an inline function;
2490 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2491 nodes can also have their abstract origin set to themselves. */
2492 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2493 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2495 /* In a DECL this is the field where attributes are stored. */
2496 #define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2498 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
2499 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2500 For a VAR_DECL, holds the initial value.
2501 For a PARM_DECL, used for DECL_ARG_TYPE--default
2502 values for parameters are encoded in the type of the function,
2503 not in the PARM_DECL slot.
2504 For a FIELD_DECL, this is used for enumeration values and the C
2505 frontend uses it for temporarily storing bitwidth of bitfields.
2507 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2508 #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2510 /* Holds the size of the datum, in bits, as a tree expression.
2511 Need not be constant. */
2512 #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2513 /* Likewise for the size in bytes. */
2514 #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2515 /* Holds the alignment required for the datum, in bits. */
2516 #define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.align)
2517 /* The alignment of NODE, in bytes. */
2518 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2519 /* Set if the alignment of this DECL has been set by the user, for
2520 example with an 'aligned' attribute. */
2521 #define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->common.base.user_align)
2522 /* Holds the machine mode corresponding to the declaration of a variable or
2523 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2525 #define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2527 /* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2528 operation it is. Note, however, that this field is overloaded, with
2529 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2530 checked before any access to the former. */
2531 #define DECL_FUNCTION_CODE(NODE) \
2532 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_code)
2533 #define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2534 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2536 /* Nonzero for a given ..._DECL node means that the name of this node should
2537 be ignored for symbolic debug purposes. */
2538 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2540 /* Nonzero for a given ..._DECL node means that this node represents an
2541 "abstract instance" of the given declaration (e.g. in the original
2542 declaration of an inline function). When generating symbolic debugging
2543 information, we mustn't try to generate any address information for nodes
2544 marked as "abstract instances" because we don't actually generate
2545 any code or allocate any data space for such instances. */
2546 #define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2548 /* Language-specific decl information. */
2549 #define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2551 /* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2552 do not allocate storage, and refer to a definition elsewhere. Note that
2553 this does not necessarily imply the entity represented by NODE
2554 has no program source-level definition in this translation unit. For
2555 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2556 DECL_EXTERNAL may be true simultaneously; that can be the case for
2557 a C99 "extern inline" function. */
2558 #define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_1)
2560 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2561 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2563 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2565 Also set in some languages for variables, etc., outside the normal
2566 lexical scope, such as class instance variables. */
2567 #define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2569 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2570 Used in FIELD_DECLs for vtable pointers.
2571 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2572 #define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2574 /* Used to indicate that this DECL represents a compiler-generated entity. */
2575 #define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2577 /* Additional flags for language-specific uses. */
2578 #define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2579 #define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2580 #define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2581 #define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2582 #define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2583 #define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2584 #define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2585 #define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2587 /* Nonzero for a decl which is at file scope. */
2588 #define DECL_FILE_SCOPE_P(EXP) \
2589 (! DECL_CONTEXT (EXP) \
2590 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2592 /* Nonzero for a decl that is decorated using attribute used.
2593 This indicates compiler tools that this decl needs to be preserved. */
2594 #define DECL_PRESERVE_P(DECL) \
2595 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2597 /* For function local variables of COMPLEX and VECTOR types,
2598 indicates that the variable is not aliased, and that all
2599 modifications to the variable have been adjusted so that
2600 they are killing assignments. Thus the variable may now
2601 be treated as a GIMPLE register, and use real instead of
2602 virtual ops in SSA form. */
2603 #define DECL_GIMPLE_REG_P(DECL) \
2604 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2606 struct GTY(()) tree_decl_common {
2607 struct tree_decl_minimal common;
2610 ENUM_BITFIELD(machine_mode) mode : 8;
2612 unsigned nonlocal_flag : 1;
2613 unsigned virtual_flag : 1;
2614 unsigned ignored_flag : 1;
2615 unsigned abstract_flag : 1;
2616 unsigned artificial_flag : 1;
2617 unsigned preserve_flag: 1;
2618 unsigned debug_expr_is_from : 1;
2620 unsigned lang_flag_0 : 1;
2621 unsigned lang_flag_1 : 1;
2622 unsigned lang_flag_2 : 1;
2623 unsigned lang_flag_3 : 1;
2624 unsigned lang_flag_4 : 1;
2625 unsigned lang_flag_5 : 1;
2626 unsigned lang_flag_6 : 1;
2627 unsigned lang_flag_7 : 1;
2629 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2630 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2631 unsigned decl_flag_0 : 1;
2632 /* In FIELD_DECL, this is DECL_BIT_FIELD
2633 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2634 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
2635 unsigned decl_flag_1 : 1;
2636 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2637 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR_P. */
2638 unsigned decl_flag_2 : 1;
2639 /* Logically, these two would go in a theoretical base shared by var and
2641 unsigned gimple_reg_flag : 1;
2642 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
2643 unsigned decl_by_reference_flag : 1;
2644 /* Padding so that 'off_align' can be on a 32-bit boundary. */
2645 unsigned decl_common_unused : 4;
2647 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
2648 unsigned int off_align : 8;
2653 tree abstract_origin;
2655 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
2659 /* Points to a structure whose details depend on the language in use. */
2660 struct lang_decl *lang_specific;
2663 extern tree decl_value_expr_lookup (tree);
2664 extern void decl_value_expr_insert (tree, tree);
2666 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2667 if transformations have made this more complicated than evaluating the
2668 decl itself. This should only be used for debugging; once this field has
2669 been set, the decl itself may not legitimately appear in the function. */
2670 #define DECL_HAS_VALUE_EXPR_P(NODE) \
2671 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_2)
2672 #define DECL_VALUE_EXPR(NODE) \
2673 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2674 #define SET_DECL_VALUE_EXPR(NODE, VAL) \
2675 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2677 /* Holds the RTL expression for the value of a variable or function.
2678 This value can be evaluated lazily for functions, variables with
2679 static storage duration, and labels. */
2680 #define DECL_RTL(NODE) \
2681 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2682 ? (NODE)->decl_with_rtl.rtl \
2683 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2685 /* Set the DECL_RTL for NODE to RTL. */
2686 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2688 /* Returns nonzero if NODE is a tree node that can contain RTL. */
2689 #define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2691 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
2692 #define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2694 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2695 NODE1, it will not be set for NODE2; this is a lazy copy. */
2696 #define COPY_DECL_RTL(NODE1, NODE2) \
2697 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2699 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2700 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2702 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2703 #define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2705 struct GTY(()) tree_decl_with_rtl {
2706 struct tree_decl_common common;
2710 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
2711 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2712 of the structure. */
2713 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2715 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2716 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2717 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2718 natural alignment of the field's type). */
2719 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2721 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
2722 if so, the type that was originally specified for it.
2723 TREE_TYPE may have been modified (in finish_struct). */
2724 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2726 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2727 if nonzero, indicates that the field occupies the type. */
2728 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2730 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2731 DECL_FIELD_OFFSET which are known to be always zero.
2732 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2734 #define DECL_OFFSET_ALIGN(NODE) \
2735 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.off_align)
2737 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2738 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
2739 (FIELD_DECL_CHECK (NODE)->decl_common.off_align = exact_log2 ((X) & -(X)))
2740 /* 1 if the alignment for this type was requested by "aligned" attribute,
2741 0 if it is the default for this type. */
2743 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2744 which this FIELD_DECL is defined. This information is needed when
2745 writing debugging information about vfield and vbase decls for C++. */
2746 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2748 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2749 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->common.base.packed_flag)
2751 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2753 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2755 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2756 this component. This makes it possible for Type-Based Alias Analysis
2757 to disambiguate accesses to this field with indirect accesses using
2760 struct S { int i; } s;
2763 If the flag is set on 'i', TBAA computes that s.i and *p never conflict.
2765 From the implementation's viewpoint, the alias set of the type of the
2766 field 'i' (int) will not be recorded as a subset of that of the type of
2767 's' (struct S) in record_component_aliases. The counterpart is that
2768 accesses to s.i must not be given the alias set of the type of 'i'
2769 (int) but instead directly that of the type of 's' (struct S). */
2770 #define DECL_NONADDRESSABLE_P(NODE) \
2771 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2773 struct GTY(()) tree_field_decl {
2774 struct tree_decl_common common;
2777 tree bit_field_type;
2784 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2785 dense, unique within any one function, and may be used to index arrays.
2786 If the value is -1, then no UID has been assigned. */
2787 #define LABEL_DECL_UID(NODE) \
2788 (LABEL_DECL_CHECK (NODE)->decl_common.label_decl_uid)
2790 /* In LABEL_DECL nodes, nonzero means that an error message about
2791 jumping into such a binding contour has been printed for this label. */
2792 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2794 struct GTY(()) tree_label_decl {
2795 struct tree_decl_with_rtl common;
2798 struct GTY(()) tree_result_decl {
2799 struct tree_decl_with_rtl common;
2802 struct GTY(()) tree_const_decl {
2803 struct tree_decl_with_rtl common;
2806 /* For a PARM_DECL, records the data type used to pass the argument,
2807 which may be different from the type seen in the program. */
2808 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2810 /* For PARM_DECL, holds an RTL for the stack slot or register
2811 where the data was actually passed. */
2812 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2814 struct GTY(()) tree_parm_decl {
2815 struct tree_decl_with_rtl common;
2820 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2821 this variable in a BIND_EXPR. */
2822 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2823 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2825 /* Used to indicate that the linkage status of this DECL is not yet known,
2826 so it should not be output now. */
2827 #define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2829 /* Nonzero for a given ..._DECL node means that no warnings should be
2830 generated just because this node is unused. */
2831 #define DECL_IN_SYSTEM_HEADER(NODE) \
2832 (in_system_header_at (DECL_SOURCE_LOCATION (NODE)))
2834 /* Used to indicate that this DECL has weak linkage. */
2835 #define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2837 /* Used to indicate that the DECL is a dllimport. */
2838 #define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2840 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2841 not be put out unless it is needed in this translation unit.
2842 Entities like this are shared across translation units (like weak
2843 entities), but are guaranteed to be generated by any translation
2844 unit that needs them, and therefore need not be put out anywhere
2845 where they are not needed. DECL_COMDAT is just a hint to the
2846 back-end; it is up to front-ends which set this flag to ensure
2847 that there will never be any harm, other than bloat, in putting out
2848 something which is DECL_COMDAT. */
2849 #define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2851 #define DECL_COMDAT_GROUP(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_group)
2853 /* A replaceable function is one which may be replaced at link-time
2854 with an entirely different definition, provided that the
2855 replacement has the same type. For example, functions declared
2856 with __attribute__((weak)) on most systems are replaceable.
2858 COMDAT functions are not replaceable, since all definitions of the
2859 function must be equivalent. It is important that COMDAT functions
2860 not be treated as replaceable so that use of C++ template
2861 instantiations is not penalized.
2863 For example, DECL_REPLACEABLE is used to determine whether or not a
2864 function (including a template instantiation) which is not
2865 explicitly declared "inline" can be inlined. If the function is
2866 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2867 implementation chosen at link-time may be different. However, a
2868 function that is not DECL_REPLACEABLE can be inlined, since all
2869 versions of the function will be functionally identical. */
2870 #define DECL_REPLACEABLE_P(NODE) \
2871 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2873 /* The name of the object as the assembler will see it (but before any
2874 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2875 as DECL_NAME. It is an IDENTIFIER_NODE. */
2876 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2878 /* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2879 This is true of all DECL nodes except FIELD_DECL. */
2880 #define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2881 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2883 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2884 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2886 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2887 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2889 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2890 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2891 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2893 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2894 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2895 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2896 semantics of using this macro, are different than saying:
2898 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2900 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2902 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2903 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2904 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2905 DECL_ASSEMBLER_NAME (DECL1)) \
2908 /* Records the section name in a section attribute. Used to pass
2909 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2910 #define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2912 /* Value of the decls's visibility attribute */
2913 #define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2915 /* Nonzero means that the decl had its visibility specified rather than
2917 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2919 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2920 multiple translation units should be merged. */
2921 #define DECL_ONE_ONLY(NODE) (DECL_COMDAT_GROUP (NODE) != NULL_TREE)
2923 struct GTY(()) tree_decl_with_vis {
2924 struct tree_decl_with_rtl common;
2925 tree assembler_name;
2929 /* Belong to VAR_DECL exclusively. */
2930 unsigned defer_output : 1;
2931 unsigned hard_register : 1;
2932 unsigned thread_local : 1;
2933 unsigned common_flag : 1;
2934 unsigned in_text_section : 1;
2935 unsigned dllimport_flag : 1;
2936 /* Used by C++. Might become a generic decl flag. */
2937 unsigned shadowed_for_var_p : 1;
2938 /* Don't belong to VAR_DECL exclusively. */
2939 unsigned weak_flag : 1;
2941 unsigned seen_in_bind_expr : 1;
2942 unsigned comdat_flag : 1;
2943 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2944 unsigned visibility_specified : 1;
2945 /* Belongs to VAR_DECL exclusively. */
2946 ENUM_BITFIELD(tls_model) tls_model : 3;
2948 /* Belong to FUNCTION_DECL exclusively. */
2949 unsigned init_priority_p : 1;
2950 /* 15 unused bits. */
2953 /* In a VAR_DECL that's static,
2954 nonzero if the space is in the text section. */
2955 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2957 /* Nonzero for a given ..._DECL node means that this node should be
2958 put in .common, if possible. If a DECL_INITIAL is given, and it
2959 is not error_mark_node, then the decl cannot be put in .common. */
2960 #define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2962 /* In a VAR_DECL, nonzero if the decl is a register variable with
2963 an explicit asm specification. */
2964 #define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2966 extern tree decl_debug_expr_lookup (tree);
2967 extern void decl_debug_expr_insert (tree, tree);
2968 /* For VAR_DECL, this is set to either an expression that it was split
2969 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2970 subexpressions that it was split into. */
2971 #define DECL_DEBUG_EXPR(NODE) \
2972 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2974 #define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2975 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2977 /* An initialization priority. */
2978 typedef unsigned short priority_type;
2980 extern priority_type decl_init_priority_lookup (tree);
2981 extern priority_type decl_fini_priority_lookup (tree);
2982 extern void decl_init_priority_insert (tree, priority_type);
2983 extern void decl_fini_priority_insert (tree, priority_type);
2985 /* In a non-local VAR_DECL with static storage duration, true if the
2986 variable has an initialization priority. If false, the variable
2987 will be initialized at the DEFAULT_INIT_PRIORITY. */
2988 #define DECL_HAS_INIT_PRIORITY_P(NODE) \
2989 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
2991 /* For a VAR_DECL or FUNCTION_DECL the initialization priority of
2993 #define DECL_INIT_PRIORITY(NODE) \
2994 (decl_init_priority_lookup (NODE))
2995 /* Set the initialization priority for NODE to VAL. */
2996 #define SET_DECL_INIT_PRIORITY(NODE, VAL) \
2997 (decl_init_priority_insert (NODE, VAL))
2999 /* For a FUNCTION_DECL the finalization priority of NODE. */
3000 #define DECL_FINI_PRIORITY(NODE) \
3001 (decl_fini_priority_lookup (NODE))
3002 /* Set the finalization priority for NODE to VAL. */
3003 #define SET_DECL_FINI_PRIORITY(NODE, VAL) \
3004 (decl_fini_priority_insert (NODE, VAL))
3006 /* The initialization priority for entities for which no explicit
3007 initialization priority has been specified. */
3008 #define DEFAULT_INIT_PRIORITY 65535
3010 /* The maximum allowed initialization priority. */
3011 #define MAX_INIT_PRIORITY 65535
3013 /* The largest priority value reserved for use by system runtime
3015 #define MAX_RESERVED_INIT_PRIORITY 100
3017 /* In a VAR_DECL, the model to use if the data should be allocated from
3018 thread-local storage. */
3019 #define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
3021 /* In a VAR_DECL, nonzero if the data should be allocated from
3022 thread-local storage. */
3023 #define DECL_THREAD_LOCAL_P(NODE) \
3024 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model >= TLS_MODEL_REAL)
3026 struct GTY(()) tree_var_decl {
3027 struct tree_decl_with_vis common;
3031 /* This field is used to reference anything in decl.result and is meant only
3032 for use by the garbage collector. */
3033 #define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
3035 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
3036 Before the struct containing the FUNCTION_DECL is laid out,
3037 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
3038 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
3039 function. When the class is laid out, this pointer is changed
3040 to an INTEGER_CST node which is suitable for use as an index
3041 into the virtual function table.
3042 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
3043 #define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
3046 tree_decl_non_common {
3047 struct tree_decl_with_vis common;
3048 /* C++ uses this in namespaces. */
3050 /* C++ uses this in templates. */
3052 /* Almost all FE's use this. */
3054 /* C++ uses this in namespaces. */
3058 /* In FUNCTION_DECL, holds the decl for the return value. */
3059 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
3061 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
3062 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
3064 /* In a FUNCTION_DECL, the saved representation of the body of the
3066 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3068 /* Nonzero in a FUNCTION_DECL means this function should be treated
3069 as if it were a malloc, meaning it returns a pointer that is
3071 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3073 /* Nonzero in a FUNCTION_DECL means this function should be treated as
3074 C++ operator new, meaning that it returns a pointer for which we
3075 should not use type based aliasing. */
3076 #define DECL_IS_OPERATOR_NEW(NODE) \
3077 (FUNCTION_DECL_CHECK (NODE)->function_decl.operator_new_flag)
3079 /* Nonzero in a FUNCTION_DECL means this function may return more
3081 #define DECL_IS_RETURNS_TWICE(NODE) \
3082 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3084 /* Nonzero in a FUNCTION_DECL means this function should be treated
3085 as "pure" function (like const function, but may read global memory). */
3086 #define DECL_PURE_P(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3088 /* Nonzero only if one of TREE_READONLY or DECL_PURE_P is nonzero AND
3089 the const or pure function may not terminate. When this is nonzero
3090 for a const or pure function, it can be dealt with by cse passes
3091 but cannot be removed by dce passes since you are not allowed to
3092 change an infinite looping program into one that terminates without
3094 #define DECL_LOOPING_CONST_OR_PURE_P(NODE) \
3095 (FUNCTION_DECL_CHECK (NODE)->function_decl.looping_const_or_pure_flag)
3097 /* Nonzero in a FUNCTION_DECL means this function should be treated
3098 as "novops" function (function that does not read global memory,
3099 but may have arbitrary side effects). */
3100 #define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3102 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
3103 at the beginning or end of execution. */
3104 #define DECL_STATIC_CONSTRUCTOR(NODE) \
3105 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3107 #define DECL_STATIC_DESTRUCTOR(NODE) \
3108 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3110 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
3111 be instrumented with calls to support routines. */
3112 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3113 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3115 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3116 disabled in this function. */
3117 #define DECL_NO_LIMIT_STACK(NODE) \
3118 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3120 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3121 static chain is not needed. */
3122 #define DECL_NO_STATIC_CHAIN(NODE) \
3123 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3125 /* Nonzero for a decl that cgraph has decided should be inlined into
3126 at least one call site. It is not meaningful to look at this
3127 directly; always use cgraph_function_possibly_inlined_p. */
3128 #define DECL_POSSIBLY_INLINED(DECL) \
3129 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3131 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3132 such as via the `inline' keyword in C/C++. This flag controls the linkage
3133 semantics of 'inline' */
3134 #define DECL_DECLARED_INLINE_P(NODE) \
3135 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3137 /* Nonzero in a FUNCTION_DECL means this function should not get
3138 -Winline warnings. */
3139 #define DECL_NO_INLINE_WARNING_P(NODE) \
3140 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_inline_warning_flag)
3142 /* Nonzero in a FUNCTION_DECL that should be always inlined by the inliner
3143 disregarding size and cost heuristics. This is equivalent to using
3144 the always_inline attribute without the required diagnostics if the
3145 function cannot be inlined. */
3146 #define DECL_DISREGARD_INLINE_LIMITS(NODE) \
3147 (FUNCTION_DECL_CHECK (NODE)->function_decl.disregard_inline_limits)
3149 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3150 that describes the status of this function. */
3151 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3153 /* In a FUNCTION_DECL, nonzero means a built in function. */
3154 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3156 /* For a builtin function, identify which part of the compiler defined it. */
3157 #define DECL_BUILT_IN_CLASS(NODE) \
3158 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3160 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
3161 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3163 #define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3164 #define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3166 /* In FUNCTION_DECL, the function specific target options to use when compiling
3168 #define DECL_FUNCTION_SPECIFIC_TARGET(NODE) \
3169 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_target)
3171 /* In FUNCTION_DECL, the function specific optimization options to use when
3172 compiling this function. */
3173 #define DECL_FUNCTION_SPECIFIC_OPTIMIZATION(NODE) \
3174 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_optimization)
3176 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3177 arguments/result/saved_tree fields by front ends. It was either inherit
3178 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3179 which seemed a bit strange. */
3181 struct GTY(()) tree_function_decl {
3182 struct tree_decl_non_common common;
3186 /* Function specific options that are used by this function. */
3187 tree function_specific_target; /* target options */
3188 tree function_specific_optimization; /* optimization options */
3190 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
3191 DECL_FUNCTION_CODE. Otherwise unused.
3192 ??? The bitfield needs to be able to hold all target function
3194 ENUM_BITFIELD(built_in_function) function_code : 11;
3195 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3197 unsigned static_ctor_flag : 1;
3198 unsigned static_dtor_flag : 1;
3199 unsigned uninlinable : 1;
3201 unsigned possibly_inlined : 1;
3202 unsigned novops_flag : 1;
3203 unsigned returns_twice_flag : 1;
3204 unsigned malloc_flag : 1;
3205 unsigned operator_new_flag : 1;
3206 unsigned declared_inline_flag : 1;
3207 unsigned regdecl_flag : 1;
3209 unsigned no_inline_warning_flag : 1;
3210 unsigned no_instrument_function_entry_exit : 1;
3211 unsigned no_limit_stack : 1;
3212 unsigned disregard_inline_limits : 1;
3213 unsigned pure_flag : 1;
3214 unsigned looping_const_or_pure_flag : 1;
3220 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3221 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3223 /* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3224 into stabs. Instead it will generate cross reference ('x') of names.
3225 This uses the same flag as DECL_EXTERNAL. */
3226 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3227 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_1)
3229 /* Getter of the imported declaration associated to the
3230 IMPORTED_DECL node. */
3231 #define IMPORTED_DECL_ASSOCIATED_DECL(NODE) \
3232 (DECL_INITIAL (IMPORTED_DECL_CHECK (NODE)))
3234 struct GTY(()) tree_type_decl {
3235 struct tree_decl_non_common common;
3239 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3240 To reduce overhead, the nodes containing the statements are not trees.
3241 This avoids the overhead of tree_common on all linked list elements.
3243 Use the interface in tree-iterator.h to access this node. */
3245 #define STATEMENT_LIST_HEAD(NODE) \
3246 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3247 #define STATEMENT_LIST_TAIL(NODE) \
3248 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3250 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
3252 struct tree_statement_list_node *prev;
3253 struct tree_statement_list_node *next;
3257 struct GTY(()) tree_statement_list
3259 struct tree_common common;
3260 struct tree_statement_list_node *head;
3261 struct tree_statement_list_node *tail;
3265 /* Optimization options used by a function. */
3267 struct GTY(()) tree_optimization_option {
3268 struct tree_common common;
3270 /* The optimization options used by the user. */
3271 struct cl_optimization opts;
3274 #define TREE_OPTIMIZATION(NODE) \
3275 (&OPTIMIZATION_NODE_CHECK (NODE)->optimization.opts)
3277 /* Return a tree node that encapsulates the current optimization options. */
3278 extern tree build_optimization_node (void);
3280 /* Target options used by a function. */
3282 struct GTY(()) tree_target_option {
3283 struct tree_common common;
3285 /* The optimization options used by the user. */
3286 struct cl_target_option opts;
3289 #define TREE_TARGET_OPTION(NODE) \
3290 (&TARGET_OPTION_NODE_CHECK (NODE)->target_option.opts)
3292 /* Return a tree node that encapsulates the current target options. */
3293 extern tree build_target_option_node (void);
3296 /* Define the overall contents of a tree node.
3297 It may be any of the structures declared above
3298 for various types of node. */
3300 union GTY ((ptr_alias (union lang_tree_node),
3301 desc ("tree_node_structure (&%h)"))) tree_node {
3302 struct tree_base GTY ((tag ("TS_BASE"))) base;
3303 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3304 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3305 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3306 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
3307 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3308 struct tree_string GTY ((tag ("TS_STRING"))) string;
3309 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3310 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3311 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3312 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3313 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3314 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3315 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3316 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3317 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3318 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3319 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3320 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3321 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3322 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3323 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3324 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3325 struct tree_list GTY ((tag ("TS_LIST"))) list;
3326 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3327 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3328 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3329 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3330 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3331 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3332 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3333 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3334 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
3335 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
3338 /* Standard named or nameless data types of the C compiler. */
3360 TI_INTEGER_MINUS_ONE,
3377 TI_COMPLEX_INTEGER_TYPE,
3378 TI_COMPLEX_FLOAT_TYPE,
3379 TI_COMPLEX_DOUBLE_TYPE,
3380 TI_COMPLEX_LONG_DOUBLE_TYPE,
3384 TI_LONG_DOUBLE_TYPE,
3388 TI_LONG_DOUBLE_PTR_TYPE,
3389 TI_INTEGER_PTR_TYPE,
3398 TI_VA_LIST_GPR_COUNTER_FIELD,
3399 TI_VA_LIST_FPR_COUNTER_FIELD,
3406 TI_DFLOAT32_PTR_TYPE,
3407 TI_DFLOAT64_PTR_TYPE,
3408 TI_DFLOAT128_PTR_TYPE,
3417 TI_SAT_LLFRACT_TYPE,
3418 TI_SAT_USFRACT_TYPE,
3420 TI_SAT_ULFRACT_TYPE,
3421 TI_SAT_ULLFRACT_TYPE,
3433 TI_SAT_LLACCUM_TYPE,
3434 TI_SAT_USACCUM_TYPE,
3436 TI_SAT_ULACCUM_TYPE,
3437 TI_SAT_ULLACCUM_TYPE,
3483 TI_OPTIMIZATION_DEFAULT,
3484 TI_OPTIMIZATION_CURRENT,
3485 TI_TARGET_OPTION_DEFAULT,
3486 TI_TARGET_OPTION_CURRENT,
3487 TI_CURRENT_TARGET_PRAGMA,
3488 TI_CURRENT_OPTIMIZE_PRAGMA,
3493 extern GTY(()) tree global_trees[TI_MAX];
3495 #define error_mark_node global_trees[TI_ERROR_MARK]
3497 #define intQI_type_node global_trees[TI_INTQI_TYPE]
3498 #define intHI_type_node global_trees[TI_INTHI_TYPE]
3499 #define intSI_type_node global_trees[TI_INTSI_TYPE]
3500 #define intDI_type_node global_trees[TI_INTDI_TYPE]
3501 #define intTI_type_node global_trees[TI_INTTI_TYPE]
3503 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3504 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3505 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3506 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3507 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3509 #define uint32_type_node global_trees[TI_UINT32_TYPE]
3510 #define uint64_type_node global_trees[TI_UINT64_TYPE]
3512 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
3513 #define integer_one_node global_trees[TI_INTEGER_ONE]
3514 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3515 #define size_zero_node global_trees[TI_SIZE_ZERO]
3516 #define size_one_node global_trees[TI_SIZE_ONE]
3517 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3518 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3519 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3521 /* Base access nodes. */
3522 #define access_public_node global_trees[TI_PUBLIC]
3523 #define access_protected_node global_trees[TI_PROTECTED]
3524 #define access_private_node global_trees[TI_PRIVATE]
3526 #define null_pointer_node global_trees[TI_NULL_POINTER]
3528 #define float_type_node global_trees[TI_FLOAT_TYPE]
3529 #define double_type_node global_trees[TI_DOUBLE_TYPE]
3530 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3532 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3533 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3534 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3535 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3537 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3538 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3539 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3540 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3542 #define void_type_node global_trees[TI_VOID_TYPE]
3543 /* The C type `void *'. */
3544 #define ptr_type_node global_trees[TI_PTR_TYPE]
3545 /* The C type `const void *'. */
3546 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3547 /* The C type `size_t'. */
3548 #define size_type_node global_trees[TI_SIZE_TYPE]
3549 #define pid_type_node global_trees[TI_PID_TYPE]
3550 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3551 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3552 #define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3553 #define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3554 /* The C type `FILE *'. */
3555 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3557 #define boolean_type_node