1 /* Front-end tree definitions for GNU compiler.
2 Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
28 #include "statistics.h"
30 #include "double-int.h"
34 /* Codes of tree nodes */
36 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
37 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
40 #include "all-tree.def"
45 #undef END_OF_BASE_TREE_CODES
47 extern unsigned char tree_contains_struct[MAX_TREE_CODES][64];
48 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) (tree_contains_struct[(CODE)][(STRUCT)])
50 /* Number of language-independent tree codes. */
51 #define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
53 /* Tree code classes. */
55 /* Each tree_code has an associated code class represented by a
58 enum tree_code_class {
59 tcc_exceptional, /* An exceptional code (fits no category). */
60 tcc_constant, /* A constant. */
61 /* Order of tcc_type and tcc_declaration is important. */
62 tcc_type, /* A type object code. */
63 tcc_declaration, /* A declaration (also serving as variable refs). */
64 tcc_reference, /* A reference to storage. */
65 tcc_comparison, /* A comparison expression. */
66 tcc_unary, /* A unary arithmetic expression. */
67 tcc_binary, /* A binary arithmetic expression. */
68 tcc_statement, /* A statement expression, which have side effects
69 but usually no interesting value. */
70 tcc_vl_exp, /* A function call or other expression with a
71 variable-length operand vector. */
72 tcc_expression /* Any other expression. */
75 /* Each tree code class has an associated string representation.
76 These must correspond to the tree_code_class entries. */
78 extern const char *const tree_code_class_strings[];
80 /* Returns the string representing CLASS. */
82 #define TREE_CODE_CLASS_STRING(CLASS)\
83 tree_code_class_strings[(int) (CLASS)]
85 extern const enum tree_code_class tree_code_type[];
86 #define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
88 /* Nonzero if CODE represents an exceptional code. */
90 #define EXCEPTIONAL_CLASS_P(CODE)\
91 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
93 /* Nonzero if CODE represents a constant. */
95 #define CONSTANT_CLASS_P(CODE)\
96 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
98 /* Nonzero if CODE represents a type. */
100 #define TYPE_P(CODE)\
101 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
103 /* Nonzero if CODE represents a declaration. */
105 #define DECL_P(CODE)\
106 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
108 /* Nonzero if DECL represents a VAR_DECL or FUNCTION_DECL. */
110 #define VAR_OR_FUNCTION_DECL_P(DECL)\
111 (TREE_CODE (DECL) == VAR_DECL || TREE_CODE (DECL) == FUNCTION_DECL)
113 /* Nonzero if CODE represents a INDIRECT_REF. Keep these checks in
114 ascending code order. */
116 #define INDIRECT_REF_P(CODE)\
117 (TREE_CODE (CODE) == INDIRECT_REF \
118 || TREE_CODE (CODE) == ALIGN_INDIRECT_REF \
119 || TREE_CODE (CODE) == MISALIGNED_INDIRECT_REF)
121 /* Nonzero if CODE represents a reference. */
123 #define REFERENCE_CLASS_P(CODE)\
124 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
126 /* Nonzero if CODE represents a comparison. */
128 #define COMPARISON_CLASS_P(CODE)\
129 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
131 /* Nonzero if CODE represents a unary arithmetic expression. */
133 #define UNARY_CLASS_P(CODE)\
134 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
136 /* Nonzero if CODE represents a binary arithmetic expression. */
138 #define BINARY_CLASS_P(CODE)\
139 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
141 /* Nonzero if CODE represents a statement expression. */
143 #define STATEMENT_CLASS_P(CODE)\
144 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
146 /* Nonzero if CODE represents a function call-like expression with a
147 variable-length operand vector. */
149 #define VL_EXP_CLASS_P(CODE)\
150 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_vl_exp)
152 /* Nonzero if CODE represents any other expression. */
154 #define EXPRESSION_CLASS_P(CODE)\
155 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
157 /* Returns nonzero iff CODE represents a type or declaration. */
159 #define IS_TYPE_OR_DECL_P(CODE)\
160 (TYPE_P (CODE) || DECL_P (CODE))
162 /* Returns nonzero iff CLASS is the tree-code class of an
165 #define IS_EXPR_CODE_CLASS(CLASS)\
166 ((CLASS) >= tcc_reference && (CLASS) <= tcc_expression)
168 /* Returns nonzero iff NODE is an expression of some kind. */
170 #define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
172 /* Number of argument-words in each kind of tree-node. */
174 extern const unsigned char tree_code_length[];
175 #define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
177 /* Names of tree components. */
179 extern const char *const tree_code_name[];
181 /* A vectors of trees. */
183 DEF_VEC_ALLOC_P(tree,gc);
184 DEF_VEC_ALLOC_P(tree,heap);
187 /* Classify which part of the compiler has defined a given builtin function.
188 Note that we assume below that this is no more than two bits. */
197 /* Names for the above. */
198 extern const char *const built_in_class_names[4];
200 /* Codes that identify the various built in functions
201 so that expand_call can identify them quickly. */
203 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
204 enum built_in_function
206 #include "builtins.def"
208 /* Complex division routines in libgcc. These are done via builtins
209 because emit_library_call_value can't handle complex values. */
210 BUILT_IN_COMPLEX_MUL_MIN,
211 BUILT_IN_COMPLEX_MUL_MAX
212 = BUILT_IN_COMPLEX_MUL_MIN
213 + MAX_MODE_COMPLEX_FLOAT
214 - MIN_MODE_COMPLEX_FLOAT,
216 BUILT_IN_COMPLEX_DIV_MIN,
217 BUILT_IN_COMPLEX_DIV_MAX
218 = BUILT_IN_COMPLEX_DIV_MIN
219 + MAX_MODE_COMPLEX_FLOAT
220 - MIN_MODE_COMPLEX_FLOAT,
222 /* Upper bound on non-language-specific builtins. */
227 /* Names for the above. */
228 extern const char * built_in_names[(int) END_BUILTINS];
230 /* Helper macros for math builtins. */
232 #define BUILTIN_EXP10_P(FN) \
233 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
234 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
236 #define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
237 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
238 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
240 #define BUILTIN_SQRT_P(FN) \
241 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
243 #define BUILTIN_CBRT_P(FN) \
244 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
246 #define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
248 #define CASE_FLT_FN(FN) case FN: case FN##F: case FN##L
249 #define CASE_FLT_FN_REENT(FN) case FN##_R: case FN##F_R: case FN##L_R
250 #define CASE_INT_FN(FN) case FN: case FN##L: case FN##LL
252 /* An array of _DECL trees for the above. */
253 extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
254 extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
256 /* In an OMP_CLAUSE node. */
258 /* Number of operands and names for each clause. */
259 extern unsigned const char omp_clause_num_ops[];
260 extern const char * const omp_clause_code_name[];
262 /* Clause codes. Do not reorder, as this is used to index into the tables
263 omp_clause_num_ops and omp_clause_code_name. */
266 /* Clause zero is special-cased inside the parser
267 (c_parser_omp_variable_list). */
268 OMP_CLAUSE_ERROR = 0,
270 /* OpenMP clause: private (variable_list). */
273 /* OpenMP clause: shared (variable_list). */
276 /* OpenMP clause: firstprivate (variable_list). */
277 OMP_CLAUSE_FIRSTPRIVATE,
279 /* OpenMP clause: lastprivate (variable_list). */
280 OMP_CLAUSE_LASTPRIVATE,
282 /* OpenMP clause: reduction (operator:variable_list).
283 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
284 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
285 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
287 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
288 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. */
289 OMP_CLAUSE_REDUCTION,
291 /* OpenMP clause: copyin (variable_list). */
294 /* OpenMP clause: copyprivate (variable_list). */
295 OMP_CLAUSE_COPYPRIVATE,
297 /* OpenMP clause: if (scalar-expression). */
300 /* OpenMP clause: num_threads (integer-expression). */
301 OMP_CLAUSE_NUM_THREADS,
303 /* OpenMP clause: schedule. */
306 /* OpenMP clause: nowait. */
309 /* OpenMP clause: ordered. */
312 /* OpenMP clause: default. */
315 /* OpenMP clause: collapse (constant-integer-expression). */
318 /* OpenMP clause: untied. */
322 /* The definition of tree nodes fills the next several pages. */
324 /* A tree node can represent a data type, a variable, an expression
325 or a statement. Each node has a TREE_CODE which says what kind of
326 thing it represents. Some common codes are:
327 INTEGER_TYPE -- represents a type of integers.
328 ARRAY_TYPE -- represents a type of pointer.
329 VAR_DECL -- represents a declared variable.
330 INTEGER_CST -- represents a constant integer value.
331 PLUS_EXPR -- represents a sum (an expression).
333 As for the contents of a tree node: there are some fields
334 that all nodes share. Each TREE_CODE has various special-purpose
335 fields as well. The fields of a node are never accessed directly,
336 always through accessor macros. */
338 /* Every kind of tree node starts with this structure,
339 so all nodes have these fields.
341 See the accessor macros, defined below, for documentation of the
345 struct GTY(()) tree_base {
346 ENUM_BITFIELD(tree_code) code : 16;
348 unsigned side_effects_flag : 1;
349 unsigned constant_flag : 1;
350 unsigned addressable_flag : 1;
351 unsigned volatile_flag : 1;
352 unsigned readonly_flag : 1;
353 unsigned unsigned_flag : 1;
354 unsigned asm_written_flag: 1;
355 unsigned nowarning_flag : 1;
357 unsigned used_flag : 1;
358 unsigned nothrow_flag : 1;
359 unsigned static_flag : 1;
360 unsigned public_flag : 1;
361 unsigned private_flag : 1;
362 unsigned protected_flag : 1;
363 unsigned deprecated_flag : 1;
364 unsigned saturating_flag : 1;
366 unsigned default_def_flag : 1;
367 unsigned lang_flag_0 : 1;
368 unsigned lang_flag_1 : 1;
369 unsigned lang_flag_2 : 1;
370 unsigned lang_flag_3 : 1;
371 unsigned lang_flag_4 : 1;
372 unsigned lang_flag_5 : 1;
373 unsigned lang_flag_6 : 1;
375 unsigned visited : 1;
376 unsigned packed_flag : 1;
377 unsigned user_align : 1;
381 union tree_ann_d *ann;
384 struct GTY(()) tree_common {
385 struct tree_base base;
390 /* The following table lists the uses of each of the above flags and
391 for which types of nodes they are defined.
396 VAR_DECL, FUNCTION_DECL, FIELD_DECL, LABEL_DECL
398 CONSTRUCTOR, IDENTIFIER_NODE
399 STMT_EXPR, it means we want the result of the enclosed expression
401 CALL_EXPR_TAILCALL in
410 VAR_DECL, FUNCTION_DECL
413 TREE_NO_TRAMPOLINE in
419 TREE_SYMBOL_REFERENCED in
423 TARGET_EXPR, WITH_CLEANUP_EXPR
425 TRY_CATCH_IS_CLEANUP in
431 EH_FILTER_MUST_NOT_THROW in
434 TYPE_REF_CAN_ALIAS_ALL in
435 POINTER_TYPE, REFERENCE_TYPE
443 CALL_CANNOT_INLINE_P in
449 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
452 VAR_DECL, FUNCTION_DECL
458 CALL_EXPR_VA_ARG_PACK in
461 TYPE_CACHED_VALUES_P in
464 SAVE_EXPR_RESOLVED_P in
467 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
468 OMP_CLAUSE_LASTPRIVATE
470 OMP_CLAUSE_PRIVATE_DEBUG in
478 CALL_EXPR_RETURN_SLOT_OPT in
484 OMP_PARALLEL_COMBINED in
486 OMP_CLAUSE_PRIVATE_OUTER_REF in
510 TREE_THIS_VOLATILE in
533 TYPE_SIZES_GIMPLIFIED in
544 REGISTER_DEFS_IN_THIS_STMT in
545 all expressions (tree-into-ssa.c)
550 VAR_DECL, FUNCTION_DECL
551 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
552 BLOCK, SSA_NAME, STRING_CST
555 all expressions (tree-ssa-dce.c, tree-ssa-pre.c)
574 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
581 IDENTIFIER_TRANSPARENT_ALIAS in
584 STMT_IN_SSA_EDGE_WORKLIST in
585 all expressions (tree-ssa-propagate.c)
587 TYPE_VECTOR_OPAQUE in
593 all trees (used liberally by many passes)
608 SSA_NAME_IS_DEFAULT_DEF in
613 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
614 enum tree_node_structure_enum {
615 #include "treestruct.def"
620 /* Define accessors for the fields that all tree nodes have
621 (though some fields are not used for all kinds of nodes). */
623 /* The tree-code says what kind of node it is.
624 Codes are defined in tree.def. */
625 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->base.code)
626 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->base.code = (VALUE))
628 /* When checking is enabled, errors will be generated if a tree node
629 is accessed incorrectly. The macros die with a fatal error. */
630 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
632 #define TREE_CHECK(T, CODE) __extension__ \
633 ({ __typeof (T) const __t = (T); \
634 if (TREE_CODE (__t) != (CODE)) \
635 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
639 #define TREE_NOT_CHECK(T, CODE) __extension__ \
640 ({ __typeof (T) const __t = (T); \
641 if (TREE_CODE (__t) == (CODE)) \
642 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
646 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
647 ({ __typeof (T) const __t = (T); \
648 if (TREE_CODE (__t) != (CODE1) \
649 && TREE_CODE (__t) != (CODE2)) \
650 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
651 (CODE1), (CODE2), 0); \
654 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
655 ({ __typeof (T) const __t = (T); \
656 if (TREE_CODE (__t) == (CODE1) \
657 || TREE_CODE (__t) == (CODE2)) \
658 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
659 (CODE1), (CODE2), 0); \
662 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
663 ({ __typeof (T) const __t = (T); \
664 if (TREE_CODE (__t) != (CODE1) \
665 && TREE_CODE (__t) != (CODE2) \
666 && TREE_CODE (__t) != (CODE3)) \
667 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
668 (CODE1), (CODE2), (CODE3), 0); \
671 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
672 ({ __typeof (T) const __t = (T); \
673 if (TREE_CODE (__t) == (CODE1) \
674 || TREE_CODE (__t) == (CODE2) \
675 || TREE_CODE (__t) == (CODE3)) \
676 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
677 (CODE1), (CODE2), (CODE3), 0); \
680 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
681 ({ __typeof (T) const __t = (T); \
682 if (TREE_CODE (__t) != (CODE1) \
683 && TREE_CODE (__t) != (CODE2) \
684 && TREE_CODE (__t) != (CODE3) \
685 && TREE_CODE (__t) != (CODE4)) \
686 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
687 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
690 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
691 ({ __typeof (T) const __t = (T); \
692 if (TREE_CODE (__t) == (CODE1) \
693 || TREE_CODE (__t) == (CODE2) \
694 || TREE_CODE (__t) == (CODE3) \
695 || TREE_CODE (__t) == (CODE4)) \
696 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
697 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
700 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
701 ({ __typeof (T) const __t = (T); \
702 if (TREE_CODE (__t) != (CODE1) \
703 && TREE_CODE (__t) != (CODE2) \
704 && TREE_CODE (__t) != (CODE3) \
705 && TREE_CODE (__t) != (CODE4) \
706 && TREE_CODE (__t) != (CODE5)) \
707 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
708 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
711 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
712 ({ __typeof (T) const __t = (T); \
713 if (TREE_CODE (__t) == (CODE1) \
714 || TREE_CODE (__t) == (CODE2) \
715 || TREE_CODE (__t) == (CODE3) \
716 || TREE_CODE (__t) == (CODE4) \
717 || TREE_CODE (__t) == (CODE5)) \
718 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
719 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
722 #define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
723 ({ __typeof (T) const __t = (T); \
724 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
725 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
729 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
730 ({ __typeof (T) const __t = (T); \
731 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
732 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
736 #define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
737 ({ __typeof (T) const __t = (T); \
738 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
739 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
743 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
744 ({ __typeof (T) const __t = (T); \
745 if (TREE_CODE (__t) != OMP_CLAUSE) \
746 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
748 if (__t->omp_clause.code != (CODE)) \
749 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
753 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
754 ({ __typeof (T) const __t = (T); \
755 if (TREE_CODE (__t) != OMP_CLAUSE) \
756 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
758 if ((int) __t->omp_clause.code < (int) (CODE1) \
759 || (int) __t->omp_clause.code > (int) (CODE2)) \
760 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
761 __FUNCTION__, (CODE1), (CODE2)); \
764 /* These checks have to be special cased. */
765 #define EXPR_CHECK(T) __extension__ \
766 ({ __typeof (T) const __t = (T); \
767 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
768 if (!IS_EXPR_CODE_CLASS (__c)) \
769 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
773 /* These checks have to be special cased. */
774 #define NON_TYPE_CHECK(T) __extension__ \
775 ({ __typeof (T) const __t = (T); \
777 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
781 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
782 (*({__typeof (T) const __t = (T); \
783 const int __i = (I); \
784 if (TREE_CODE (__t) != TREE_VEC) \
785 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
787 if (__i < 0 || __i >= __t->vec.length) \
788 tree_vec_elt_check_failed (__i, __t->vec.length, \
789 __FILE__, __LINE__, __FUNCTION__); \
790 &__t->vec.a[__i]; }))
792 #define OMP_CLAUSE_ELT_CHECK(T, I) __extension__ \
793 (*({__typeof (T) const __t = (T); \
794 const int __i = (I); \
795 if (TREE_CODE (__t) != OMP_CLAUSE) \
796 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
798 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
799 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
801 &__t->omp_clause.ops[__i]; }))
803 /* Special checks for TREE_OPERANDs. */
804 #define TREE_OPERAND_CHECK(T, I) __extension__ \
805 (*({__typeof (T) const __t = EXPR_CHECK (T); \
806 const int __i = (I); \
807 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
808 tree_operand_check_failed (__i, __t, \
809 __FILE__, __LINE__, __FUNCTION__); \
810 &__t->exp.operands[__i]; }))
812 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
813 (*({__typeof (T) const __t = (T); \
814 const int __i = (I); \
815 if (TREE_CODE (__t) != CODE) \
816 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
817 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
818 tree_operand_check_failed (__i, __t, \
819 __FILE__, __LINE__, __FUNCTION__); \
820 &__t->exp.operands[__i]; }))
822 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
824 ({__typeof (T) const __t = (T); \
825 const int __i = (I); \
826 if (TREE_CODE (__t) != (CODE)) \
827 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
828 if (__i < 0 || __i >= TREE_OPERAND_LENGTH (__t)) \
829 tree_operand_check_failed (__i, __t, \
830 __FILE__, __LINE__, __FUNCTION__); \
831 &__t->exp.operands[__i]; }))
833 /* Nodes are chained together for many purposes.
834 Types are chained together to record them for being output to the debugger
835 (see the function `chain_type').
836 Decls in the same scope are chained together to record the contents
838 Statement nodes for successive statements used to be chained together.
839 Often lists of things are represented by TREE_LIST nodes that
840 are chained together. */
842 #define TREE_CHAIN(NODE) __extension__ \
843 (*({__typeof (NODE) const __t = (NODE); \
844 &__t->common.chain; }))
846 /* In all nodes that are expressions, this is the data type of the expression.
847 In POINTER_TYPE nodes, this is the type that the pointer points to.
848 In ARRAY_TYPE nodes, this is the type of the elements.
849 In VECTOR_TYPE nodes, this is the type of the elements. */
850 #define TREE_TYPE(NODE) __extension__ \
851 (*({__typeof (NODE) const __t = (NODE); \
852 &__t->common.type; }))
854 extern void tree_contains_struct_check_failed (const_tree,
855 const enum tree_node_structure_enum,
856 const char *, int, const char *)
859 extern void tree_check_failed (const_tree, const char *, int, const char *,
860 ...) ATTRIBUTE_NORETURN;
861 extern void tree_not_check_failed (const_tree, const char *, int, const char *,
862 ...) ATTRIBUTE_NORETURN;
863 extern void tree_class_check_failed (const_tree, const enum tree_code_class,
864 const char *, int, const char *)
866 extern void tree_range_check_failed (const_tree, const char *, int,
867 const char *, enum tree_code,
869 extern void tree_not_class_check_failed (const_tree,
870 const enum tree_code_class,
871 const char *, int, const char *)
873 extern void tree_vec_elt_check_failed (int, int, const char *,
876 extern void phi_node_elt_check_failed (int, int, const char *,
879 extern void tree_operand_check_failed (int, const_tree,
880 const char *, int, const char *)
882 extern void omp_clause_check_failed (const_tree, const char *, int,
883 const char *, enum omp_clause_code)
885 extern void omp_clause_operand_check_failed (int, const_tree, const char *,
888 extern void omp_clause_range_check_failed (const_tree, const char *, int,
889 const char *, enum omp_clause_code,
890 enum omp_clause_code)
893 #else /* not ENABLE_TREE_CHECKING, or not gcc */
895 #define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
896 #define TREE_CHECK(T, CODE) (T)
897 #define TREE_NOT_CHECK(T, CODE) (T)
898 #define TREE_CHECK2(T, CODE1, CODE2) (T)
899 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
900 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
901 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
902 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
903 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
904 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
905 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
906 #define TREE_CLASS_CHECK(T, CODE) (T)
907 #define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
908 #define EXPR_CHECK(T) (T)
909 #define NON_TYPE_CHECK(T) (T)
910 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
911 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
912 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
913 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
914 #define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
915 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
916 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
918 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
919 #define TREE_TYPE(NODE) ((NODE)->common.type)
923 #define TREE_BLOCK(NODE) *(tree_block (NODE))
925 #include "tree-check.h"
927 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
928 #define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
929 #define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
930 #define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
931 #define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
932 #define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
933 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
934 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
935 #define VL_EXP_CHECK(T) TREE_CLASS_CHECK (T, tcc_vl_exp)
936 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
937 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
939 #define RECORD_OR_UNION_CHECK(T) \
940 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
941 #define NOT_RECORD_OR_UNION_CHECK(T) \
942 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
944 #define NUMERICAL_TYPE_CHECK(T) \
945 TREE_CHECK5 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE, \
948 /* Here is how primitive or already-canonicalized types' hash codes
950 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
952 /* A simple hash function for an arbitrary tree node. This must not be
953 used in hash tables which are saved to a PCH. */
954 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
956 /* Tests if CODE is a conversion expr (NOP_EXPR or CONVERT_EXPR). */
957 #define CONVERT_EXPR_CODE_P(CODE) \
958 ((CODE) == NOP_EXPR || (CODE) == CONVERT_EXPR)
960 /* Similarly, but accept an expressions instead of a tree code. */
961 #define CONVERT_EXPR_P(EXP) CONVERT_EXPR_CODE_P (TREE_CODE (EXP))
963 /* Generate case for NOP_EXPR, CONVERT_EXPR. */
965 #define CASE_CONVERT \
969 /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
970 that don't change the machine mode. */
972 #define STRIP_NOPS(EXP) \
973 while ((CONVERT_EXPR_P (EXP) \
974 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
975 && TREE_OPERAND (EXP, 0) != error_mark_node \
976 && (TYPE_MODE (TREE_TYPE (EXP)) \
977 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
978 (EXP) = TREE_OPERAND (EXP, 0)
980 /* Like STRIP_NOPS, but don't let the signedness change either. */
982 #define STRIP_SIGN_NOPS(EXP) \
983 while ((CONVERT_EXPR_P (EXP) \
984 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
985 && TREE_OPERAND (EXP, 0) != error_mark_node \
986 && (TYPE_MODE (TREE_TYPE (EXP)) \
987 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
988 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
989 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
990 && (POINTER_TYPE_P (TREE_TYPE (EXP)) \
991 == POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
992 (EXP) = TREE_OPERAND (EXP, 0)
994 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
996 #define STRIP_TYPE_NOPS(EXP) \
997 while ((CONVERT_EXPR_P (EXP) \
998 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
999 && TREE_OPERAND (EXP, 0) != error_mark_node \
1000 && (TREE_TYPE (EXP) \
1001 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
1002 (EXP) = TREE_OPERAND (EXP, 0)
1004 /* Remove unnecessary type conversions according to
1005 tree_ssa_useless_type_conversion. */
1007 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
1008 while (tree_ssa_useless_type_conversion (EXP)) \
1009 EXP = TREE_OPERAND (EXP, 0)
1011 /* Nonzero if TYPE represents an integral type. Note that we do not
1012 include COMPLEX types here. Keep these checks in ascending code
1015 #define INTEGRAL_TYPE_P(TYPE) \
1016 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
1017 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
1018 || TREE_CODE (TYPE) == INTEGER_TYPE)
1020 /* Nonzero if TYPE represents a non-saturating fixed-point type. */
1022 #define NON_SAT_FIXED_POINT_TYPE_P(TYPE) \
1023 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && !TYPE_SATURATING (TYPE))
1025 /* Nonzero if TYPE represents a saturating fixed-point type. */
1027 #define SAT_FIXED_POINT_TYPE_P(TYPE) \
1028 (TREE_CODE (TYPE) == FIXED_POINT_TYPE && TYPE_SATURATING (TYPE))
1030 /* Nonzero if TYPE represents a fixed-point type. */
1032 #define FIXED_POINT_TYPE_P(TYPE) (TREE_CODE (TYPE) == FIXED_POINT_TYPE)
1034 /* Nonzero if TYPE represents a scalar floating-point type. */
1036 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
1038 /* Nonzero if TYPE represents a complex floating-point type. */
1040 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
1041 (TREE_CODE (TYPE) == COMPLEX_TYPE \
1042 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1044 /* Nonzero if TYPE represents a vector floating-point type. */
1046 #define VECTOR_FLOAT_TYPE_P(TYPE) \
1047 (TREE_CODE (TYPE) == VECTOR_TYPE \
1048 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
1050 /* Nonzero if TYPE represents a floating-point type, including complex
1051 and vector floating-point types. The vector and complex check does
1052 not use the previous two macros to enable early folding. */
1054 #define FLOAT_TYPE_P(TYPE) \
1055 (SCALAR_FLOAT_TYPE_P (TYPE) \
1056 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
1057 || TREE_CODE (TYPE) == VECTOR_TYPE) \
1058 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
1060 /* Nonzero if TYPE represents a decimal floating-point type. */
1061 #define DECIMAL_FLOAT_TYPE_P(TYPE) \
1062 (SCALAR_FLOAT_TYPE_P (TYPE) \
1063 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
1065 /* Nonzero if TYPE represents an aggregate (multi-component) type.
1066 Keep these checks in ascending code order. */
1068 #define AGGREGATE_TYPE_P(TYPE) \
1069 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
1070 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
1072 /* Nonzero if TYPE represents a pointer or reference type.
1073 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
1074 ascending code order. */
1076 #define POINTER_TYPE_P(TYPE) \
1077 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
1079 /* Nonzero if this type is a complete type. */
1080 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
1082 /* Nonzero if this type is the (possibly qualified) void type. */
1083 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
1085 /* Nonzero if this type is complete or is cv void. */
1086 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
1087 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
1089 /* Nonzero if this type is complete or is an array with unspecified bound. */
1090 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1091 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1094 /* Define many boolean fields that all tree nodes have. */
1096 /* In VAR_DECL nodes, nonzero means address of this is needed.
1097 So it cannot be in a register.
1098 In a FUNCTION_DECL, nonzero means its address is needed.
1099 So it must be compiled even if it is an inline function.
1100 In a FIELD_DECL node, it means that the programmer is permitted to
1101 construct the address of this field. This is used for aliasing
1102 purposes: see record_component_aliases.
1103 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1104 In LABEL_DECL nodes, it means a goto for this label has been seen
1105 from a place outside all binding contours that restore stack levels.
1106 In ..._TYPE nodes, it means that objects of this type must
1107 be fully addressable. This means that pieces of this
1108 object cannot go into register parameters, for example.
1109 In IDENTIFIER_NODEs, this means that some extern decl for this name
1110 had its address taken. That matters for inline functions. */
1111 #define TREE_ADDRESSABLE(NODE) ((NODE)->base.addressable_flag)
1113 /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1114 exit of a function. Calls for which this is true are candidates for tail
1115 call optimizations. */
1116 #define CALL_EXPR_TAILCALL(NODE) \
1117 (CALL_EXPR_CHECK(NODE)->base.addressable_flag)
1119 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1120 CASE_LOW operand has been processed. */
1121 #define CASE_LOW_SEEN(NODE) \
1122 (CASE_LABEL_EXPR_CHECK (NODE)->base.addressable_flag)
1124 #define PREDICT_EXPR_OUTCOME(NODE) \
1125 ((enum prediction) (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag))
1126 #define SET_PREDICT_EXPR_OUTCOME(NODE, OUTCOME) \
1127 (PREDICT_EXPR_CHECK(NODE)->base.addressable_flag = (int) OUTCOME)
1128 #define PREDICT_EXPR_PREDICTOR(NODE) \
1129 ((enum br_predictor)tree_low_cst (TREE_OPERAND (PREDICT_EXPR_CHECK (NODE), 0), 0))
1131 /* In a VAR_DECL, nonzero means allocate static storage.
1132 In a FUNCTION_DECL, nonzero if function has been defined.
1133 In a CONSTRUCTOR, nonzero means allocate static storage. */
1134 #define TREE_STATIC(NODE) ((NODE)->base.static_flag)
1136 /* In an ADDR_EXPR, nonzero means do not use a trampoline. */
1137 #define TREE_NO_TRAMPOLINE(NODE) (ADDR_EXPR_CHECK (NODE)->base.static_flag)
1139 /* In a TARGET_EXPR or WITH_CLEANUP_EXPR, means that the pertinent cleanup
1140 should only be executed if an exception is thrown, not on normal exit
1142 #define CLEANUP_EH_ONLY(NODE) ((NODE)->base.static_flag)
1144 /* In a TRY_CATCH_EXPR, means that the handler should be considered a
1145 separate cleanup in honor_protect_cleanup_actions. */
1146 #define TRY_CATCH_IS_CLEANUP(NODE) \
1147 (TRY_CATCH_EXPR_CHECK (NODE)->base.static_flag)
1149 /* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1150 CASE_HIGH operand has been processed. */
1151 #define CASE_HIGH_SEEN(NODE) \
1152 (CASE_LABEL_EXPR_CHECK (NODE)->base.static_flag)
1154 /* Used to mark a CALL_EXPR as not suitable for inlining. */
1155 #define CALL_CANNOT_INLINE_P(NODE) (CALL_EXPR_CHECK (NODE)->base.static_flag)
1157 /* In an expr node (usually a conversion) this means the node was made
1158 implicitly and should not lead to any sort of warning. In a decl node,
1159 warnings concerning the decl should be suppressed. This is used at
1160 least for used-before-set warnings, and it set after one warning is
1162 #define TREE_NO_WARNING(NODE) ((NODE)->base.nowarning_flag)
1164 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
1165 this string as an argument. */
1166 #define TREE_SYMBOL_REFERENCED(NODE) \
1167 (IDENTIFIER_NODE_CHECK (NODE)->base.static_flag)
1169 /* Nonzero in a pointer or reference type means the data pointed to
1170 by this type can alias anything. */
1171 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1172 (PTR_OR_REF_CHECK (NODE)->base.static_flag)
1174 /* In a MODIFY_EXPR, means that the store in the expression is nontemporal. */
1175 #define MOVE_NONTEMPORAL(NODE) \
1176 (EXPR_CHECK (NODE)->base.static_flag)
1178 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1179 there was an overflow in folding. */
1181 #define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->base.public_flag)
1183 /* TREE_OVERFLOW can only be true for EXPR of CONSTANT_CLASS_P. */
1185 #define TREE_OVERFLOW_P(EXPR) \
1186 (CONSTANT_CLASS_P (EXPR) && TREE_OVERFLOW (EXPR))
1188 /* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1189 nonzero means name is to be accessible from outside this translation unit.
1190 In an IDENTIFIER_NODE, nonzero means an external declaration
1191 accessible from outside this translation unit was previously seen
1192 for this name in an inner scope. */
1193 #define TREE_PUBLIC(NODE) ((NODE)->base.public_flag)
1195 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1196 of cached values, or is something else. */
1197 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->base.public_flag)
1199 /* In a SAVE_EXPR, indicates that the original expression has already
1200 been substituted with a VAR_DECL that contains the value. */
1201 #define SAVE_EXPR_RESOLVED_P(NODE) \
1202 (SAVE_EXPR_CHECK (NODE)->base.public_flag)
1204 /* Set on a CALL_EXPR if this stdarg call should be passed the argument
1206 #define CALL_EXPR_VA_ARG_PACK(NODE) \
1207 (CALL_EXPR_CHECK(NODE)->base.public_flag)
1209 /* In any expression, decl, or constant, nonzero means it has side effects or
1210 reevaluation of the whole expression could produce a different value.
1211 This is set if any subexpression is a function call, a side effect or a
1212 reference to a volatile variable. In a ..._DECL, this is set only if the
1213 declaration said `volatile'. This will never be set for a constant. */
1214 #define TREE_SIDE_EFFECTS(NODE) \
1215 (NON_TYPE_CHECK (NODE)->base.side_effects_flag)
1217 /* In a LABEL_DECL, nonzero means this label had its address taken
1218 and therefore can never be deleted and is a jump target for
1220 #define FORCED_LABEL(NODE) (LABEL_DECL_CHECK (NODE)->base.side_effects_flag)
1222 /* Nonzero means this expression is volatile in the C sense:
1223 its address should be of type `volatile WHATEVER *'.
1224 In other words, the declared item is volatile qualified.
1225 This is used in _DECL nodes and _REF nodes.
1226 On a FUNCTION_DECL node, this means the function does not
1227 return normally. This is the same effect as setting
1228 the attribute noreturn on the function in C.
1230 In a ..._TYPE node, means this type is volatile-qualified.
1231 But use TYPE_VOLATILE instead of this macro when the node is a type,
1232 because eventually we may make that a different bit.
1234 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1235 #define TREE_THIS_VOLATILE(NODE) ((NODE)->base.volatile_flag)
1237 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
1238 accessing the memory pointed to won't generate a trap. However,
1239 this only applies to an object when used appropriately: it doesn't
1240 mean that writing a READONLY mem won't trap. Similarly for
1241 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1243 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1244 (or slice of the array) always belongs to the range of the array.
1245 I.e. that the access will not trap, provided that the access to
1246 the base to the array will not trap. */
1247 #define TREE_THIS_NOTRAP(NODE) ((NODE)->base.nothrow_flag)
1249 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1250 nonzero means it may not be the lhs of an assignment.
1251 Nonzero in a FUNCTION_DECL means this function should be treated
1252 as "const" function (can only read its arguments). */
1253 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->base.readonly_flag)
1255 /* Value of expression is constant. Always on in all ..._CST nodes. May
1256 also appear in an expression or decl where the value is constant. */
1257 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->base.constant_flag)
1259 /* Nonzero if NODE, a type, has had its sizes gimplified. */
1260 #define TYPE_SIZES_GIMPLIFIED(NODE) \
1261 (TYPE_CHECK (NODE)->base.constant_flag)
1263 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1264 #define DECL_UNSIGNED(NODE) \
1265 (DECL_COMMON_CHECK (NODE)->base.unsigned_flag)
1267 /* In integral and pointer types, means an unsigned type. */
1268 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->base.unsigned_flag)
1270 /* Nonzero in a VAR_DECL or STRING_CST means assembler code has been written.
1271 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1272 This is interesting in an inline function, since it might not need
1273 to be compiled separately.
1274 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1275 if the sdb debugging info for the type has been written.
1276 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1277 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1279 #define TREE_ASM_WRITTEN(NODE) ((NODE)->base.asm_written_flag)
1281 /* Nonzero in a _DECL if the name is used in its scope.
1282 Nonzero in an expr node means inhibit warning if value is unused.
1283 In IDENTIFIER_NODEs, this means that some extern decl for this name
1285 In a BLOCK, this means that the block contains variables that are used. */
1286 #define TREE_USED(NODE) ((NODE)->base.used_flag)
1288 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1289 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1290 #define TREE_NOTHROW(NODE) ((NODE)->base.nothrow_flag)
1292 /* In a CALL_EXPR, means that it's safe to use the target of the call
1293 expansion as the return slot for a call that returns in memory. */
1294 #define CALL_EXPR_RETURN_SLOT_OPT(NODE) \
1295 (CALL_EXPR_CHECK (NODE)->base.private_flag)
1297 /* In a RESULT_DECL, PARM_DECL and VAR_DECL, means that it is
1298 passed by invisible reference (and the TREE_TYPE is a pointer to the true
1300 #define DECL_BY_REFERENCE(NODE) \
1301 (TREE_CHECK3 (NODE, VAR_DECL, PARM_DECL, \
1302 RESULT_DECL)->decl_common.decl_by_reference_flag)
1304 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
1305 thunked-to function. */
1306 #define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->base.protected_flag)
1308 /* In a type, nonzero means that all objects of the type are guaranteed by the
1309 language or front-end to be properly aligned, so we can indicate that a MEM
1310 of this type is aligned at least to the alignment of the type, even if it
1311 doesn't appear that it is. We see this, for example, in object-oriented
1312 languages where a tag field may show this is an object of a more-aligned
1313 variant of the more generic type.
1315 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1317 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->base.nothrow_flag)
1319 /* Used in classes in C++. */
1320 #define TREE_PRIVATE(NODE) ((NODE)->base.private_flag)
1321 /* Used in classes in C++. */
1322 #define TREE_PROTECTED(NODE) ((NODE)->base.protected_flag)
1324 /* Nonzero in a _DECL if the use of the name is defined as a
1325 deprecated feature by __attribute__((deprecated)). */
1326 #define TREE_DEPRECATED(NODE) \
1327 ((NODE)->base.deprecated_flag)
1329 /* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1330 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1331 #define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1332 (IDENTIFIER_NODE_CHECK (NODE)->base.deprecated_flag)
1334 /* In fixed-point types, means a saturating type. */
1335 #define TYPE_SATURATING(NODE) ((NODE)->base.saturating_flag)
1337 /* These flags are available for each language front end to use internally. */
1338 #define TREE_LANG_FLAG_0(NODE) ((NODE)->base.lang_flag_0)
1339 #define TREE_LANG_FLAG_1(NODE) ((NODE)->base.lang_flag_1)
1340 #define TREE_LANG_FLAG_2(NODE) ((NODE)->base.lang_flag_2)
1341 #define TREE_LANG_FLAG_3(NODE) ((NODE)->base.lang_flag_3)
1342 #define TREE_LANG_FLAG_4(NODE) ((NODE)->base.lang_flag_4)
1343 #define TREE_LANG_FLAG_5(NODE) ((NODE)->base.lang_flag_5)
1344 #define TREE_LANG_FLAG_6(NODE) ((NODE)->base.lang_flag_6)
1346 /* Define additional fields and accessors for nodes representing constants. */
1348 /* In an INTEGER_CST node. These two together make a 2-word integer.
1349 If the data type is signed, the value is sign-extended to 2 words
1350 even though not all of them may really be in use.
1351 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1352 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1353 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1354 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1356 #define INT_CST_LT(A, B) \
1357 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1358 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1359 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1361 #define INT_CST_LT_UNSIGNED(A, B) \
1362 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1363 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1364 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1365 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1366 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1368 struct GTY(()) tree_int_cst {
1369 struct tree_common common;
1373 /* In a REAL_CST node. struct real_value is an opaque entity, with
1374 manipulators defined in real.h. We don't want tree.h depending on
1375 real.h and transitively on tm.h. */
1378 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1379 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1381 struct GTY(()) tree_real_cst {
1382 struct tree_common common;
1383 struct real_value * real_cst_ptr;
1386 /* In a FIXED_CST node. */
1389 #define TREE_FIXED_CST_PTR(NODE) (FIXED_CST_CHECK (NODE)->fixed_cst.fixed_cst_ptr)
1390 #define TREE_FIXED_CST(NODE) (*TREE_FIXED_CST_PTR (NODE))
1392 struct GTY(()) tree_fixed_cst {
1393 struct tree_common common;
1394 struct fixed_value * fixed_cst_ptr;
1397 /* In a STRING_CST */
1398 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1399 #define TREE_STRING_POINTER(NODE) \
1400 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1402 struct GTY(()) tree_string {
1403 struct tree_common common;
1408 /* In a COMPLEX_CST node. */
1409 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1410 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1412 struct GTY(()) tree_complex {
1413 struct tree_common common;
1418 /* In a VECTOR_CST node. */
1419 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1421 struct GTY(()) tree_vector {
1422 struct tree_common common;
1428 /* Define fields and accessors for some special-purpose tree nodes. */
1430 #define IDENTIFIER_LENGTH(NODE) \
1431 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1432 #define IDENTIFIER_POINTER(NODE) \
1433 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1434 #define IDENTIFIER_HASH_VALUE(NODE) \
1435 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1437 /* Translate a hash table identifier pointer to a tree_identifier
1438 pointer, and vice versa. */
1440 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1441 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1442 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1444 struct GTY(()) tree_identifier {
1445 struct tree_common common;
1446 struct ht_identifier id;
1449 /* In a TREE_LIST node. */
1450 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1451 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1453 struct GTY(()) tree_list {
1454 struct tree_common common;
1459 /* In a TREE_VEC node. */
1460 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1461 #define TREE_VEC_END(NODE) \
1462 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1464 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1466 struct GTY(()) tree_vec {
1467 struct tree_common common;
1469 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1472 /* In a CONSTRUCTOR node. */
1473 #define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1474 #define CONSTRUCTOR_ELT(NODE,IDX) \
1475 (VEC_index (constructor_elt, CONSTRUCTOR_ELTS (NODE), IDX))
1476 #define CONSTRUCTOR_NELTS(NODE) (VEC_length (constructor_elt, CONSTRUCTOR_ELTS (NODE)))
1478 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1479 value of each element (stored within VAL). IX must be a scratch variable
1480 of unsigned integer type. */
1481 #define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1482 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1484 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1488 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1489 the value of each element (stored within VAL) and its index (stored
1490 within INDEX). IX must be a scratch variable of unsigned integer type. */
1491 #define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1492 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1494 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1495 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1499 /* Append a new constructor element to V, with the specified INDEX and VAL. */
1500 #define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1502 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1503 _ce___->index = INDEX; \
1504 _ce___->value = VALUE; \
1507 /* True if NODE, a FIELD_DECL, is to be processed as a bitfield for
1508 constructor output purposes. */
1509 #define CONSTRUCTOR_BITFIELD_P(NODE) \
1510 (DECL_BIT_FIELD (FIELD_DECL_CHECK (NODE)) && DECL_MODE (NODE) != BLKmode)
1512 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1513 element. INDEX can optionally design the position of VALUE: in arrays,
1514 it is the index where VALUE has to be placed; in structures, it is the
1515 FIELD_DECL of the member. */
1516 typedef struct GTY(()) constructor_elt_d {
1521 DEF_VEC_O(constructor_elt);
1522 DEF_VEC_ALLOC_O(constructor_elt,gc);
1524 struct GTY(()) tree_constructor {
1525 struct tree_common common;
1526 VEC(constructor_elt,gc) *elts;
1529 /* Define fields and accessors for some nodes that represent expressions. */
1531 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1532 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1533 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1534 && integer_zerop (TREE_OPERAND (NODE, 0)))
1536 /* In ordinary expression nodes. */
1537 #define TREE_OPERAND_LENGTH(NODE) tree_operand_length (NODE)
1538 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1540 /* In a tcc_vl_exp node, operand 0 is an INT_CST node holding the operand
1541 length. Its value includes the length operand itself; that is,
1542 the minimum valid length is 1.
1543 Note that we have to bypass the use of TREE_OPERAND to access
1544 that field to avoid infinite recursion in expanding the macros. */
1545 #define VL_EXP_OPERAND_LENGTH(NODE) \
1546 ((int)TREE_INT_CST_LOW (VL_EXP_CHECK (NODE)->exp.operands[0]))
1548 /* In a LOOP_EXPR node. */
1549 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1551 /* The source location of this expression. Non-tree_exp nodes such as
1552 decls and constants can be shared among multiple locations, so
1554 #define EXPR_LOCATION(NODE) (EXPR_P ((NODE)) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1555 #define SET_EXPR_LOCATION(NODE, LOCUS) EXPR_CHECK ((NODE))->exp.locus = (LOCUS)
1556 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1557 #define EXPR_LOCUS(NODE) (EXPR_P (NODE) \
1558 ? CONST_CAST (source_location *, &(NODE)->exp.locus) \
1559 : (source_location *) NULL)
1560 #define SET_EXPR_LOCUS(NODE, FROM) set_expr_locus ((NODE), (FROM))
1561 #define EXPR_FILENAME(NODE) LOCATION_FILE (EXPR_CHECK ((NODE))->exp.locus)
1562 #define EXPR_LINENO(NODE) LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1564 /* True if a tree is an expression or statement that can have a
1566 #define CAN_HAVE_LOCATION_P(NODE) (EXPR_P (NODE))
1568 extern void protected_set_expr_location (tree, location_t);
1570 /* In a TARGET_EXPR node. */
1571 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1572 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1573 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1575 /* DECL_EXPR accessor. This gives access to the DECL associated with
1576 the given declaration statement. */
1577 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1579 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1581 /* COMPOUND_LITERAL_EXPR accessors. */
1582 #define COMPOUND_LITERAL_EXPR_DECL_EXPR(NODE) \
1583 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
1584 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
1585 DECL_EXPR_DECL (COMPOUND_LITERAL_EXPR_DECL_EXPR (NODE))
1587 /* SWITCH_EXPR accessors. These give access to the condition, body and
1588 original condition type (before any compiler conversions)
1589 of the switch statement, respectively. */
1590 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1591 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1592 #define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1594 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1595 of a case label, respectively. */
1596 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1597 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1598 #define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1600 /* The operands of a TARGET_MEM_REF. */
1601 #define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1602 #define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1603 #define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1604 #define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1605 #define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1606 #define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1608 /* The operands of a BIND_EXPR. */
1609 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1610 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1611 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1613 /* GOTO_EXPR accessor. This gives access to the label associated with
1614 a goto statement. */
1615 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1617 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1618 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1619 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1621 #define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1622 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1623 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1624 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1625 /* Nonzero if we want to create an ASM_INPUT instead of an
1626 ASM_OPERAND with no operands. */
1627 #define ASM_INPUT_P(NODE) (ASM_EXPR_CHECK (NODE)->base.static_flag)
1628 #define ASM_VOLATILE_P(NODE) (ASM_EXPR_CHECK (NODE)->base.public_flag)
1630 /* COND_EXPR accessors. */
1631 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1632 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1633 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1635 /* Accessors for the chains of recurrences. */
1636 #define CHREC_VAR(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 0)
1637 #define CHREC_LEFT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 1)
1638 #define CHREC_RIGHT(NODE) TREE_OPERAND (POLYNOMIAL_CHREC_CHECK (NODE), 2)
1639 #define CHREC_VARIABLE(NODE) TREE_INT_CST_LOW (CHREC_VAR (NODE))
1641 /* LABEL_EXPR accessor. This gives access to the label associated with
1642 the given label expression. */
1643 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1645 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1646 accessors for SSA operands. */
1648 /* CATCH_EXPR accessors. */
1649 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1650 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1652 /* EH_FILTER_EXPR accessors. */
1653 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1654 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1655 #define EH_FILTER_MUST_NOT_THROW(NODE) \
1656 (EH_FILTER_EXPR_CHECK (NODE)->base.static_flag)
1658 /* OBJ_TYPE_REF accessors. */
1659 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1660 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1661 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1663 /* ASSERT_EXPR accessors. */
1664 #define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1665 #define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1667 /* CALL_EXPR accessors.
1669 #define CALL_EXPR_FN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 1)
1670 #define CALL_EXPR_STATIC_CHAIN(NODE) TREE_OPERAND (CALL_EXPR_CHECK (NODE), 2)
1671 #define CALL_EXPR_ARGS(NODE) call_expr_arglist (NODE)
1672 #define CALL_EXPR_ARG(NODE, I) TREE_OPERAND (CALL_EXPR_CHECK (NODE), (I) + 3)
1673 #define call_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
1675 /* CALL_EXPR_ARGP returns a pointer to the argument vector for NODE.
1676 We can't use &CALL_EXPR_ARG (NODE, 0) because that will complain if
1677 the argument count is zero when checking is enabled. Instead, do
1678 the pointer arithmetic to advance past the 3 fixed operands in a
1679 CALL_EXPR. That produces a valid pointer to just past the end of the
1680 operand array, even if it's not valid to dereference it. */
1681 #define CALL_EXPR_ARGP(NODE) \
1682 (&(TREE_OPERAND (CALL_EXPR_CHECK (NODE), 0)) + 3)
1684 /* OpenMP directive and clause accessors. */
1686 #define OMP_BODY(NODE) \
1687 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1688 #define OMP_CLAUSES(NODE) \
1689 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1691 #define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1692 #define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1694 #define OMP_TASK_BODY(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 0)
1695 #define OMP_TASK_CLAUSES(NODE) TREE_OPERAND (OMP_TASK_CHECK (NODE), 1)
1697 #define OMP_TASKREG_CHECK(NODE) TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_TASK)
1698 #define OMP_TASKREG_BODY(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 0)
1699 #define OMP_TASKREG_CLAUSES(NODE) TREE_OPERAND (OMP_TASKREG_CHECK (NODE), 1)
1701 #define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1702 #define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1703 #define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1704 #define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1705 #define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1706 #define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1708 #define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1709 #define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1711 #define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1713 #define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1714 #define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1716 #define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1718 #define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1720 #define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1721 #define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1723 #define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1724 #define OMP_CLAUSE_DECL(NODE) \
1725 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1726 OMP_CLAUSE_PRIVATE, \
1727 OMP_CLAUSE_COPYPRIVATE), 0)
1729 /* True on an OMP_SECTION statement that was the last lexical member.
1730 This status is meaningful in the implementation of lastprivate. */
1731 #define OMP_SECTION_LAST(NODE) \
1732 (OMP_SECTION_CHECK (NODE)->base.private_flag)
1734 /* True on an OMP_PARALLEL statement if it represents an explicit
1735 combined parallel work-sharing constructs. */
1736 #define OMP_PARALLEL_COMBINED(NODE) \
1737 (OMP_PARALLEL_CHECK (NODE)->base.private_flag)
1739 /* True on a PRIVATE clause if its decl is kept around for debugging
1740 information only and its DECL_VALUE_EXPR is supposed to point
1741 to what it has been remapped to. */
1742 #define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1743 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE)->base.public_flag)
1745 /* True on a PRIVATE clause if ctor needs access to outer region's
1747 #define OMP_CLAUSE_PRIVATE_OUTER_REF(NODE) \
1748 TREE_PRIVATE (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1750 /* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1751 decl is present in the chain. */
1752 #define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1753 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE)->base.public_flag)
1754 #define OMP_CLAUSE_LASTPRIVATE_STMT(NODE) \
1755 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, \
1756 OMP_CLAUSE_LASTPRIVATE),\
1758 #define OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ(NODE) \
1759 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1761 #define OMP_CLAUSE_IF_EXPR(NODE) \
1762 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1763 #define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1764 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1765 #define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1766 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1768 #define OMP_CLAUSE_COLLAPSE_EXPR(NODE) \
1769 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 0)
1770 #define OMP_CLAUSE_COLLAPSE_ITERVAR(NODE) \
1771 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 1)
1772 #define OMP_CLAUSE_COLLAPSE_COUNT(NODE) \
1773 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_COLLAPSE), 2)
1775 #define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1776 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1777 #define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1778 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1779 #define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1780 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1781 #define OMP_CLAUSE_REDUCTION_GIMPLE_INIT(NODE) \
1782 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_init
1783 #define OMP_CLAUSE_REDUCTION_GIMPLE_MERGE(NODE) \
1784 (OMP_CLAUSE_CHECK (NODE))->omp_clause.gimple_reduction_merge
1785 #define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1786 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1788 enum omp_clause_schedule_kind
1790 OMP_CLAUSE_SCHEDULE_STATIC,
1791 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1792 OMP_CLAUSE_SCHEDULE_GUIDED,
1793 OMP_CLAUSE_SCHEDULE_AUTO,
1794 OMP_CLAUSE_SCHEDULE_RUNTIME
1797 #define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1798 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1800 enum omp_clause_default_kind
1802 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1803 OMP_CLAUSE_DEFAULT_SHARED,
1804 OMP_CLAUSE_DEFAULT_NONE,
1805 OMP_CLAUSE_DEFAULT_PRIVATE,
1806 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE
1809 #define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1810 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1812 struct GTY(()) tree_exp {
1813 struct tree_common common;
1816 tree GTY ((special ("tree_exp"),
1817 desc ("TREE_CODE ((tree) &%0)")))
1821 /* SSA_NAME accessors. */
1823 /* Returns the variable being referenced. Once released, this is the
1824 only field that can be relied upon. */
1825 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1827 /* Returns the statement which defines this SSA name. */
1828 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->ssa_name.def_stmt
1830 /* Returns the SSA version number of this SSA name. Note that in
1831 tree SSA, version numbers are not per variable and may be recycled. */
1832 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1834 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1835 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1837 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1838 SSA_NAME_CHECK (NODE)->base.asm_written_flag
1840 /* Nonzero if this SSA_NAME expression is currently on the free list of
1841 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1842 has no meaning for an SSA_NAME. */
1843 #define SSA_NAME_IN_FREE_LIST(NODE) \
1844 SSA_NAME_CHECK (NODE)->base.nothrow_flag
1846 /* Nonzero if this SSA_NAME is the default definition for the
1847 underlying symbol. A default SSA name is created for symbol S if
1848 the very first reference to S in the function is a read operation.
1849 Default definitions are always created by an empty statement and
1850 belong to no basic block. */
1851 #define SSA_NAME_IS_DEFAULT_DEF(NODE) \
1852 SSA_NAME_CHECK (NODE)->base.default_def_flag
1854 /* Attributes for SSA_NAMEs for pointer-type variables. */
1855 #define SSA_NAME_PTR_INFO(N) \
1856 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1858 #ifndef _TREE_FLOW_H
1859 struct ptr_info_def;
1864 /* Immediate use linking structure. This structure is used for maintaining
1865 a doubly linked list of uses of an SSA_NAME. */
1866 typedef struct GTY(()) ssa_use_operand_d {
1867 struct ssa_use_operand_d* GTY((skip(""))) prev;
1868 struct ssa_use_operand_d* GTY((skip(""))) next;
1869 /* Immediate uses for a given SSA name are maintained as a cyclic
1870 list. To recognize the root of this list, the location field
1871 needs to point to the original SSA name. Since statements and
1872 SSA names are of different data types, we need this union. See
1873 the explanation in struct immediate_use_iterator_d. */
1874 union { gimple stmt; tree ssa_name; } GTY((skip(""))) loc;
1875 tree *GTY((skip(""))) use;
1876 } ssa_use_operand_t;
1878 /* Return the immediate_use information for an SSA_NAME. */
1879 #define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1881 struct GTY(()) tree_ssa_name {
1882 struct tree_common common;
1884 /* _DECL wrapped by this SSA name. */
1887 /* Statement that defines this SSA name. */
1890 /* SSA version number. */
1891 unsigned int version;
1893 /* Pointer attributes used for alias analysis. */
1894 struct ptr_info_def *ptr_info;
1896 /* Immediate uses list for this SSA_NAME. */
1897 struct ssa_use_operand_d imm_uses;
1900 struct GTY(()) phi_arg_d {
1901 /* imm_use MUST be the first element in struct because we do some
1902 pointer arithmetic with it. See phi_arg_index_from_use. */
1903 struct ssa_use_operand_d imm_use;
1908 #define OMP_CLAUSE_CODE(NODE) \
1909 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1911 #define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1912 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1914 #define OMP_CLAUSE_CODE(NODE) \
1915 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1917 #define OMP_CLAUSE_OPERAND(NODE, I) \
1918 OMP_CLAUSE_ELT_CHECK (NODE, I)
1920 struct GTY(()) tree_omp_clause {
1921 struct tree_common common;
1922 enum omp_clause_code code;
1923 union omp_clause_subcode {
1924 enum omp_clause_default_kind default_kind;
1925 enum omp_clause_schedule_kind schedule_kind;
1926 enum tree_code reduction_code;
1927 } GTY ((skip)) subcode;
1929 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1931 gimple_seq gimple_reduction_init;
1932 gimple_seq gimple_reduction_merge;
1934 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1938 struct varray_head_tag;
1940 /* In a BLOCK node. */
1941 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1942 #define BLOCK_NONLOCALIZED_VARS(NODE) (BLOCK_CHECK (NODE)->block.nonlocalized_vars)
1943 #define BLOCK_NUM_NONLOCALIZED_VARS(NODE) VEC_length (tree, BLOCK_NONLOCALIZED_VARS (NODE))
1944 #define BLOCK_NONLOCALIZED_VAR(NODE,N) VEC_index (tree, BLOCK_NONLOCALIZED_VARS (NODE), N)
1945 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1946 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1947 /* Note: when changing this, make sure to find the places
1948 that use chainon or nreverse. */
1949 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1950 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1951 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1953 /* An index number for this block. These values are not guaranteed to
1954 be unique across functions -- whether or not they are depends on
1955 the debugging output format in use. */
1956 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1958 /* If block reordering splits a lexical block into discontiguous
1959 address ranges, we'll make a copy of the original block.
1961 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1962 In that case, we have one source block that has been replicated
1963 (through inlining or unrolling) into many logical blocks, and that
1964 these logical blocks have different physical variables in them.
1966 In this case, we have one logical block split into several
1967 non-contiguous address ranges. Most debug formats can't actually
1968 represent this idea directly, so we fake it by creating multiple
1969 logical blocks with the same variables in them. However, for those
1970 that do support non-contiguous regions, these allow the original
1971 logical block to be reconstructed, along with the set of address
1974 One of the logical block fragments is arbitrarily chosen to be
1975 the ORIGIN. The other fragments will point to the origin via
1976 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1977 be null. The list of fragments will be chained through
1978 BLOCK_FRAGMENT_CHAIN from the origin. */
1980 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1981 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1983 /* For an inlined function, this gives the location where it was called
1984 from. This is only set in the top level block, which corresponds to the
1985 inlined function scope. This is used in the debug output routines. */
1987 #define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1989 struct GTY(()) tree_block {
1990 struct tree_common common;
1992 unsigned abstract_flag : 1;
1993 unsigned block_num : 31;
1998 VEC(tree,gc) *nonlocalized_vars;
2002 tree abstract_origin;
2003 tree fragment_origin;
2004 tree fragment_chain;
2007 /* Define fields and accessors for nodes representing data types. */
2009 /* See tree.def for documentation of the use of these fields.
2010 Look at the documentation of the various ..._TYPE tree codes.
2012 Note that the type.values, type.minval, and type.maxval fields are
2013 overloaded and used for different macros in different kinds of types.
2014 Each macro must check to ensure the tree node is of the proper kind of
2015 type. Note also that some of the front-ends also overload these fields,
2016 so they must be checked as well. */
2018 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
2019 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
2020 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
2021 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
2022 #define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
2023 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
2024 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
2025 #define TYPE_ORIG_SIZE_TYPE(NODE) \
2026 (INTEGER_TYPE_CHECK (NODE)->type.values \
2027 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
2028 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
2029 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
2030 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
2031 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
2032 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
2033 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
2034 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
2035 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
2036 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
2037 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
2038 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
2039 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
2040 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
2041 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
2042 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
2043 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
2044 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
2045 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
2046 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
2048 /* Vector types need to check target flags to determine type. */
2049 extern enum machine_mode vector_type_mode (const_tree);
2050 #define TYPE_MODE(NODE) \
2051 (TREE_CODE (TYPE_CHECK (NODE)) == VECTOR_TYPE \
2052 ? vector_type_mode (NODE) : (NODE)->type.mode)
2053 #define SET_TYPE_MODE(NODE, MODE) \
2054 (TYPE_CHECK (NODE)->type.mode = (MODE))
2056 /* The "canonical" type for this type node, which can be used to
2057 compare the type for equality with another type. If two types are
2058 equal (based on the semantics of the language), then they will have
2059 equivalent TYPE_CANONICAL entries.
2061 As a special case, if TYPE_CANONICAL is NULL_TREE, then it cannot
2062 be used for comparison against other types. Instead, the type is
2063 said to require structural equality checks, described in
2064 TYPE_STRUCTURAL_EQUALITY_P. */
2065 #define TYPE_CANONICAL(NODE) (TYPE_CHECK (NODE)->type.canonical)
2066 /* Indicates that the type node requires structural equality
2067 checks. The compiler will need to look at the composition of the
2068 type to determine whether it is equal to another type, rather than
2069 just comparing canonical type pointers. For instance, we would need
2070 to look at the return and parameter types of a FUNCTION_TYPE
2072 #define TYPE_STRUCTURAL_EQUALITY_P(NODE) (TYPE_CANONICAL (NODE) == NULL_TREE)
2073 /* Sets the TYPE_CANONICAL field to NULL_TREE, indicating that the
2074 type node requires structural equality. */
2075 #define SET_TYPE_STRUCTURAL_EQUALITY(NODE) (TYPE_CANONICAL (NODE) = NULL_TREE)
2076 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
2077 #define TYPE_IBIT(NODE) (GET_MODE_IBIT (TYPE_MODE (NODE)))
2078 #define TYPE_FBIT(NODE) (GET_MODE_FBIT (TYPE_MODE (NODE)))
2080 /* For a VECTOR_TYPE node, this describes a different type which is emitted
2081 in the debugging output. We use this to describe a vector as a
2082 structure containing an array. */
2083 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
2085 /* For record and union types, information about this type, as a base type
2087 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2089 /* For non record and union types, used in a language-dependent way. */
2090 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
2092 /* The (language-specific) typed-based alias set for this type.
2093 Objects whose TYPE_ALIAS_SETs are different cannot alias each
2094 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
2095 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
2096 type can alias objects of any type. */
2097 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
2099 /* Nonzero iff the typed-based alias set for this type has been
2101 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
2103 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
2105 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
2107 /* The alignment necessary for objects of this type.
2108 The value is an int, measured in bits. */
2109 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
2111 /* 1 if the alignment for this type was requested by "aligned" attribute,
2112 0 if it is the default for this type. */
2113 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->common.base.user_align)
2115 /* The alignment for NODE, in bytes. */
2116 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
2118 /* If your language allows you to declare types, and you want debug info
2119 for them, then you need to generate corresponding TYPE_DECL nodes.
2120 These "stub" TYPE_DECL nodes have no name, and simply point at the
2121 type node. You then set the TYPE_STUB_DECL field of the type node
2122 to point back at the TYPE_DECL node. This allows the debug routines
2123 to know that the two nodes represent the same type, so that we only
2124 get one debug info record for them. */
2125 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
2127 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
2128 has BLKmode only because it lacks the alignment requirement for
2130 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
2132 /* In an INTEGER_TYPE, it means the type represents a size. We use
2133 this both for validity checking and to permit optimizations that
2134 are unsafe for other types. Note that the C `size_t' type should
2135 *not* have this flag set. The `size_t' type is simply a typedef
2136 for an ordinary integer type that happens to be the type of an
2137 expression returned by `sizeof'; `size_t' has no special
2138 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
2139 always actual sizes. */
2140 #define TYPE_IS_SIZETYPE(NODE) \
2141 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
2143 /* Nonzero in a type considered volatile as a whole. */
2144 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->base.volatile_flag)
2146 /* Means this type is const-qualified. */
2147 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->base.readonly_flag)
2149 /* If nonzero, this type is `restrict'-qualified, in the C sense of
2151 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2153 /* There is a TYPE_QUAL value for each type qualifier. They can be
2154 combined by bitwise-or to form the complete set of qualifiers for a
2157 #define TYPE_UNQUALIFIED 0x0
2158 #define TYPE_QUAL_CONST 0x1
2159 #define TYPE_QUAL_VOLATILE 0x2
2160 #define TYPE_QUAL_RESTRICT 0x4
2162 /* The set of type qualifiers for this type. */
2163 #define TYPE_QUALS(NODE) \
2164 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2165 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2166 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2168 /* These flags are available for each language front end to use internally. */
2169 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2170 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2171 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2172 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2173 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2174 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2175 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2177 /* Used to keep track of visited nodes in tree traversals. This is set to
2178 0 by copy_node and make_node. */
2179 #define TREE_VISITED(NODE) ((NODE)->base.visited)
2181 /* If set in an ARRAY_TYPE, indicates a string type (for languages
2182 that distinguish string from array of char).
2183 If set in a INTEGER_TYPE, indicates a character type. */
2184 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2186 /* If non-NULL, this is an upper bound of the size (in bytes) of an
2187 object of the given ARRAY_TYPE. This allows temporaries to be
2189 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2190 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2192 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2193 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2194 (((unsigned HOST_WIDE_INT) 1) \
2195 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2197 /* Set precision to n when we have 2^n sub-parts of the vector. */
2198 #define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2199 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2201 /* Nonzero in a VECTOR_TYPE if the frontends should not emit warnings
2202 about missing conversions to other vector types of the same size. */
2203 #define TYPE_VECTOR_OPAQUE(NODE) \
2204 (VECTOR_TYPE_CHECK (NODE)->base.deprecated_flag)
2206 /* Indicates that objects of this type must be initialized by calling a
2207 function when they are created. */
2208 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
2209 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2211 /* Indicates that objects of this type (a UNION_TYPE), should be passed
2212 the same way that the first union alternative would be passed. */
2213 #define TYPE_TRANSPARENT_UNION(NODE) \
2214 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2216 /* For an ARRAY_TYPE, indicates that it is not permitted to take the
2217 address of a component of the type. This is the counterpart of
2218 DECL_NONADDRESSABLE_P for arrays, see the definition of this flag. */
2219 #define TYPE_NONALIASED_COMPONENT(NODE) \
2220 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2222 /* Indicated that objects of this type should be laid out in as
2223 compact a way as possible. */
2224 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->common.base.packed_flag)
2226 /* Used by type_contains_placeholder_p to avoid recomputation.
2227 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2228 this field directly. */
2229 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2230 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2234 struct GTY(()) tree_type {
2235 struct tree_common common;
2242 unsigned int precision : 10;
2243 unsigned no_force_blk_flag : 1;
2244 unsigned needs_constructing_flag : 1;
2245 unsigned transparent_union_flag : 1;
2246 unsigned restrict_flag : 1;
2247 unsigned contains_placeholder_bits : 2;
2249 ENUM_BITFIELD(machine_mode) mode : 8;
2251 unsigned string_flag : 1;
2252 unsigned lang_flag_0 : 1;
2253 unsigned lang_flag_1 : 1;
2254 unsigned lang_flag_2 : 1;
2255 unsigned lang_flag_3 : 1;
2256 unsigned lang_flag_4 : 1;
2257 unsigned lang_flag_5 : 1;
2258 unsigned lang_flag_6 : 1;
2261 alias_set_type alias_set;
2264 union tree_type_symtab {
2265 int GTY ((tag ("0"))) address;
2266 const char * GTY ((tag ("1"))) pointer;
2267 struct die_struct * GTY ((tag ("2"))) die;
2268 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2269 descbits ("2"))) symtab;
2278 /* Points to a structure whose details depend on the language in use. */
2279 struct lang_type *lang_specific;
2282 /* Define accessor macros for information about type inheritance
2285 A "basetype" means a particular usage of a data type for inheritance
2286 in another type. Each such basetype usage has its own "binfo"
2287 object to describe it. The binfo object is a TREE_VEC node.
2289 Inheritance is represented by the binfo nodes allocated for a
2290 given type. For example, given types C and D, such that D is
2291 inherited by C, 3 binfo nodes will be allocated: one for describing
2292 the binfo properties of C, similarly one for D, and one for
2293 describing the binfo properties of D as a base type for C.
2294 Thus, given a pointer to class C, one can get a pointer to the binfo
2295 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2297 /* BINFO specific flags. */
2299 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
2300 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->base.static_flag)
2302 /* Flags for language dependent use. */
2303 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2304 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2305 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2306 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2307 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2308 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2309 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2311 /* The actual data type node being inherited in this basetype. */
2312 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2314 /* The offset where this basetype appears in its containing type.
2315 BINFO_OFFSET slot holds the offset (in bytes)
2316 from the base of the complete object to the base of the part of the
2317 object that is allocated on behalf of this `type'.
2318 This is always 0 except when there is multiple inheritance. */
2320 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2321 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2323 /* The virtual function table belonging to this basetype. Virtual
2324 function tables provide a mechanism for run-time method dispatching.
2325 The entries of a virtual function table are language-dependent. */
2327 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2329 /* The virtual functions in the virtual function table. This is
2330 a TREE_LIST that is used as an initial approximation for building
2331 a virtual function table for this basetype. */
2332 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2334 /* A vector of binfos for the direct basetypes inherited by this
2337 If this basetype describes type D as inherited in C, and if the
2338 basetypes of D are E and F, then this vector contains binfos for
2339 inheritance of E and F by C. */
2340 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2342 /* The number of basetypes for NODE. */
2343 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2345 /* Accessor macro to get to the Nth base binfo of this binfo. */
2346 #define BINFO_BASE_BINFO(NODE,N) \
2347 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2348 #define BINFO_BASE_ITERATE(NODE,N,B) \
2349 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2350 #define BINFO_BASE_APPEND(NODE,T) \
2351 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2353 /* For a BINFO record describing a virtual base class, i.e., one where
2354 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2355 base. The actual contents are language-dependent. In the C++
2356 front-end this field is an INTEGER_CST giving an offset into the
2357 vtable where the offset to the virtual base can be found. */
2358 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2360 /* Indicates the accesses this binfo has to its bases. The values are
2361 access_public_node, access_protected_node or access_private_node.
2362 If this array is not present, public access is implied. */
2363 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2365 #define BINFO_BASE_ACCESS(NODE,N) \
2366 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2367 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2368 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2370 /* The index in the VTT where this subobject's sub-VTT can be found.
2371 NULL_TREE if there is no sub-VTT. */
2372 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2374 /* The index in the VTT where the vptr for this subobject can be
2375 found. NULL_TREE if there is no secondary vptr in the VTT. */
2376 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2378 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2379 inheriting this base for non-virtual bases. For virtual bases it
2380 points either to the binfo for which this is a primary binfo, or to
2381 the binfo of the most derived type. */
2382 #define BINFO_INHERITANCE_CHAIN(NODE) \
2383 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2385 struct GTY (()) tree_binfo {
2386 struct tree_common common;
2392 VEC(tree,gc) *base_accesses;
2398 VEC(tree,none) base_binfos;
2402 /* Define fields and accessors for nodes representing declared names. */
2404 /* Nonzero if DECL represents a variable for the SSA passes. */
2405 #define SSA_VAR_P(DECL) \
2406 (TREE_CODE (DECL) == VAR_DECL \
2407 || TREE_CODE (DECL) == PARM_DECL \
2408 || TREE_CODE (DECL) == RESULT_DECL \
2409 || (TREE_CODE (DECL) == SSA_NAME \
2410 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2411 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2412 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
2417 /* Enumerate visibility settings. */
2418 #ifndef SYMBOL_VISIBILITY_DEFINED
2419 #define SYMBOL_VISIBILITY_DEFINED
2420 enum symbol_visibility
2423 VISIBILITY_PROTECTED,
2432 /* This is the name of the object as written by the user.
2433 It is an IDENTIFIER_NODE. */
2434 #define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2436 /* Every ..._DECL node gets a unique number. */
2437 #define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2439 /* These two fields describe where in the source code the declaration
2440 was. If the declaration appears in several places (as for a C
2441 function that is declared first and then defined later), this
2442 information should refer to the definition. */
2443 #define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2444 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2445 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2446 #define DECL_IS_BUILTIN(DECL) \
2447 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2449 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2450 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2451 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2452 points to either the FUNCTION_DECL for the containing function,
2453 the RECORD_TYPE or UNION_TYPE for the containing type, or
2454 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2456 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2457 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2458 struct GTY(()) tree_decl_minimal {
2459 struct tree_common common;
2467 /* For any sort of a ..._DECL node, this points to the original (abstract)
2468 decl node which this decl is an instance of, or else it is NULL indicating
2469 that this decl is not an instance of some other decl. For example,
2470 in a nested declaration of an inline function, this points back to the
2472 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2474 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2475 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2476 #define DECL_ORIGIN(NODE) \
2477 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2479 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2480 inline instance of some original (abstract) decl from an inline function;
2481 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2482 nodes can also have their abstract origin set to themselves. */
2483 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2484 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2486 /* In a DECL this is the field where attributes are stored. */
2487 #define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2489 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
2490 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2491 For a VAR_DECL, holds the initial value.
2492 For a PARM_DECL, used for DECL_ARG_TYPE--default
2493 values for parameters are encoded in the type of the function,
2494 not in the PARM_DECL slot.
2495 For a FIELD_DECL, this is used for enumeration values and the C
2496 frontend uses it for temporarily storing bitwidth of bitfields.
2498 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2499 #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2501 /* Holds the size of the datum, in bits, as a tree expression.
2502 Need not be constant. */
2503 #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2504 /* Likewise for the size in bytes. */
2505 #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2506 /* Holds the alignment required for the datum, in bits. */
2507 #define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.align)
2508 /* The alignment of NODE, in bytes. */
2509 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2510 /* Set if the alignment of this DECL has been set by the user, for
2511 example with an 'aligned' attribute. */
2512 #define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->common.base.user_align)
2513 /* Holds the machine mode corresponding to the declaration of a variable or
2514 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2516 #define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2518 /* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2519 operation it is. Note, however, that this field is overloaded, with
2520 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2521 checked before any access to the former. */
2522 #define DECL_FUNCTION_CODE(NODE) \
2523 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_code)
2524 #define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2525 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2527 /* Nonzero for a given ..._DECL node means that the name of this node should
2528 be ignored for symbolic debug purposes. */
2529 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2531 /* Nonzero for a given ..._DECL node means that this node represents an
2532 "abstract instance" of the given declaration (e.g. in the original
2533 declaration of an inline function). When generating symbolic debugging
2534 information, we mustn't try to generate any address information for nodes
2535 marked as "abstract instances" because we don't actually generate
2536 any code or allocate any data space for such instances. */
2537 #define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2539 /* Language-specific decl information. */
2540 #define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2542 /* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2543 do not allocate storage, and refer to a definition elsewhere. Note that
2544 this does not necessarily imply the entity represented by NODE
2545 has no program source-level definition in this translation unit. For
2546 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2547 DECL_EXTERNAL may be true simultaneously; that can be the case for
2548 a C99 "extern inline" function. */
2549 #define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_1)
2551 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2552 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2554 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2556 Also set in some languages for variables, etc., outside the normal
2557 lexical scope, such as class instance variables. */
2558 #define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2560 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2561 Used in FIELD_DECLs for vtable pointers.
2562 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2563 #define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2565 /* Used to indicate that this DECL represents a compiler-generated entity. */
2566 #define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2568 /* Additional flags for language-specific uses. */
2569 #define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2570 #define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2571 #define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2572 #define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2573 #define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2574 #define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2575 #define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2576 #define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2578 /* Used to indicate an alias set for the memory pointed to by this
2579 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2580 pointer (or reference) type. */
2581 #define DECL_POINTER_ALIAS_SET(NODE) \
2582 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2584 /* Nonzero if an alias set has been assigned to this declaration. */
2585 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2586 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2588 /* Nonzero for a decl which is at file scope. */
2589 #define DECL_FILE_SCOPE_P(EXP) \
2590 (! DECL_CONTEXT (EXP) \
2591 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2593 /* Nonzero for a decl that is decorated using attribute used.
2594 This indicates compiler tools that this decl needs to be preserved. */
2595 #define DECL_PRESERVE_P(DECL) \
2596 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2598 /* For function local variables of COMPLEX and VECTOR types,
2599 indicates that the variable is not aliased, and that all
2600 modifications to the variable have been adjusted so that
2601 they are killing assignments. Thus the variable may now
2602 be treated as a GIMPLE register, and use real instead of
2603 virtual ops in SSA form. */
2604 #define DECL_GIMPLE_REG_P(DECL) \
2605 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2607 struct GTY(()) tree_decl_common {
2608 struct tree_decl_minimal common;
2611 ENUM_BITFIELD(machine_mode) mode : 8;
2613 unsigned nonlocal_flag : 1;
2614 unsigned virtual_flag : 1;
2615 unsigned ignored_flag : 1;
2616 unsigned abstract_flag : 1;
2617 unsigned artificial_flag : 1;
2618 unsigned preserve_flag: 1;
2619 unsigned debug_expr_is_from : 1;
2621 unsigned lang_flag_0 : 1;
2622 unsigned lang_flag_1 : 1;
2623 unsigned lang_flag_2 : 1;
2624 unsigned lang_flag_3 : 1;
2625 unsigned lang_flag_4 : 1;
2626 unsigned lang_flag_5 : 1;
2627 unsigned lang_flag_6 : 1;
2628 unsigned lang_flag_7 : 1;
2630 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2631 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2632 unsigned decl_flag_0 : 1;
2633 /* In FIELD_DECL, this is DECL_BIT_FIELD
2634 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2635 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
2636 unsigned decl_flag_1 : 1;
2637 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2638 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR_P. */
2639 unsigned decl_flag_2 : 1;
2640 /* Logically, these two would go in a theoretical base shared by var and
2642 unsigned gimple_reg_flag : 1;
2643 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
2644 unsigned decl_by_reference_flag : 1;
2645 /* Padding so that 'off_align' can be on a 32-bit boundary. */
2646 unsigned decl_common_unused : 4;
2648 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
2649 unsigned int off_align : 8;
2654 tree abstract_origin;
2656 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
2659 alias_set_type pointer_alias_set;
2660 /* Points to a structure whose details depend on the language in use. */
2661 struct lang_decl *lang_specific;
2664 extern tree decl_value_expr_lookup (tree);
2665 extern void decl_value_expr_insert (tree, tree);
2667 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2668 if transformations have made this more complicated than evaluating the
2669 decl itself. This should only be used for debugging; once this field has
2670 been set, the decl itself may not legitimately appear in the function. */
2671 #define DECL_HAS_VALUE_EXPR_P(NODE) \
2672 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_2)
2673 #define DECL_VALUE_EXPR(NODE) \
2674 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2675 #define SET_DECL_VALUE_EXPR(NODE, VAL) \
2676 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2678 /* Holds the RTL expression for the value of a variable or function.
2679 This value can be evaluated lazily for functions, variables with
2680 static storage duration, and labels. */
2681 #define DECL_RTL(NODE) \
2682 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2683 ? (NODE)->decl_with_rtl.rtl \
2684 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2686 /* Set the DECL_RTL for NODE to RTL. */
2687 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2689 /* Returns nonzero if NODE is a tree node that can contain RTL. */
2690 #define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2692 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
2693 #define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2695 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2696 NODE1, it will not be set for NODE2; this is a lazy copy. */
2697 #define COPY_DECL_RTL(NODE1, NODE2) \
2698 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2700 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2701 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2703 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2704 #define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2706 struct GTY(()) tree_decl_with_rtl {
2707 struct tree_decl_common common;
2711 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
2712 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2713 of the structure. */
2714 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2716 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2717 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2718 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2719 natural alignment of the field's type). */
2720 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2722 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
2723 if so, the type that was originally specified for it.
2724 TREE_TYPE may have been modified (in finish_struct). */
2725 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2727 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2728 if nonzero, indicates that the field occupies the type. */
2729 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2731 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2732 DECL_FIELD_OFFSET which are known to be always zero.
2733 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2735 #define DECL_OFFSET_ALIGN(NODE) \
2736 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.off_align)
2738 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2739 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
2740 (FIELD_DECL_CHECK (NODE)->decl_common.off_align = exact_log2 ((X) & -(X)))
2741 /* 1 if the alignment for this type was requested by "aligned" attribute,
2742 0 if it is the default for this type. */
2744 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2745 which this FIELD_DECL is defined. This information is needed when
2746 writing debugging information about vfield and vbase decls for C++. */
2747 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2749 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2750 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->common.base.packed_flag)
2752 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2754 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2756 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2757 this component. This makes it possible for Type-Based Alias Analysis
2758 to disambiguate accesses to this field with indirect accesses using
2761 struct S { int i; } s;
2764 If the flag is set on 'i', TBAA computes that s.i and *p never conflict.
2766 From the implementation's viewpoint, the alias set of the type of the
2767 field 'i' (int) will not be recorded as a subset of that of the type of
2768 's' (struct S) in record_component_aliases. The counterpart is that
2769 accesses to s.i must not be given the alias set of the type of 'i'
2770 (int) but instead directly that of the type of 's' (struct S). */
2771 #define DECL_NONADDRESSABLE_P(NODE) \
2772 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2774 struct GTY(()) tree_field_decl {
2775 struct tree_decl_common common;
2778 tree bit_field_type;
2785 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2786 dense, unique within any one function, and may be used to index arrays.
2787 If the value is -1, then no UID has been assigned. */
2788 #define LABEL_DECL_UID(NODE) \
2789 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2791 /* In LABEL_DECL nodes, nonzero means that an error message about
2792 jumping into such a binding contour has been printed for this label. */
2793 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2795 struct GTY(()) tree_label_decl {
2796 struct tree_decl_with_rtl common;
2799 struct GTY(()) tree_result_decl {
2800 struct tree_decl_with_rtl common;
2803 struct GTY(()) tree_const_decl {
2804 struct tree_decl_with_rtl common;
2807 /* For a PARM_DECL, records the data type used to pass the argument,
2808 which may be different from the type seen in the program. */
2809 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2811 /* For PARM_DECL, holds an RTL for the stack slot or register
2812 where the data was actually passed. */
2813 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2815 struct GTY(()) tree_parm_decl {
2816 struct tree_decl_with_rtl common;
2821 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2822 this variable in a BIND_EXPR. */
2823 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2824 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2826 /* Used to indicate that the linkage status of this DECL is not yet known,
2827 so it should not be output now. */
2828 #define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2830 /* Nonzero for a given ..._DECL node means that no warnings should be
2831 generated just because this node is unused. */
2832 #define DECL_IN_SYSTEM_HEADER(NODE) \
2833 (in_system_header_at (DECL_SOURCE_LOCATION (NODE)))
2835 /* Used to indicate that this DECL has weak linkage. */
2836 #define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2838 /* Used to indicate that the DECL is a dllimport. */
2839 #define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2841 /* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2842 based on a variable with a restrict qualified type. If it is,
2843 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2846 #define DECL_BASED_ON_RESTRICT_P(NODE) \
2847 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2848 #define DECL_GET_RESTRICT_BASE(NODE) \
2849 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2850 #define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2851 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2853 extern tree decl_restrict_base_lookup (tree);
2854 extern void decl_restrict_base_insert (tree, tree);
2856 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2857 not be put out unless it is needed in this translation unit.
2858 Entities like this are shared across translation units (like weak
2859 entities), but are guaranteed to be generated by any translation
2860 unit that needs them, and therefore need not be put out anywhere
2861 where they are not needed. DECL_COMDAT is just a hint to the
2862 back-end; it is up to front-ends which set this flag to ensure
2863 that there will never be any harm, other than bloat, in putting out
2864 something which is DECL_COMDAT. */
2865 #define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2867 /* A replaceable function is one which may be replaced at link-time
2868 with an entirely different definition, provided that the
2869 replacement has the same type. For example, functions declared
2870 with __attribute__((weak)) on most systems are replaceable.
2872 COMDAT functions are not replaceable, since all definitions of the
2873 function must be equivalent. It is important that COMDAT functions
2874 not be treated as replaceable so that use of C++ template
2875 instantiations is not penalized.
2877 For example, DECL_REPLACEABLE is used to determine whether or not a
2878 function (including a template instantiation) which is not
2879 explicitly declared "inline" can be inlined. If the function is
2880 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2881 implementation chosen at link-time may be different. However, a
2882 function that is not DECL_REPLACEABLE can be inlined, since all
2883 versions of the function will be functionally identical. */
2884 #define DECL_REPLACEABLE_P(NODE) \
2885 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2887 /* The name of the object as the assembler will see it (but before any
2888 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2889 as DECL_NAME. It is an IDENTIFIER_NODE. */
2890 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2892 /* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2893 This is true of all DECL nodes except FIELD_DECL. */
2894 #define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2895 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2897 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2898 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2900 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2901 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2903 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2904 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2905 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2907 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2908 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2909 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2910 semantics of using this macro, are different than saying:
2912 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2914 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2916 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2917 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2918 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2919 DECL_ASSEMBLER_NAME (DECL1)) \
2922 /* Records the section name in a section attribute. Used to pass
2923 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2924 #define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2926 /* Value of the decls's visibility attribute */
2927 #define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2929 /* Nonzero means that the decl had its visibility specified rather than
2931 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2933 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2934 multiple translation units should be merged. */
2935 #define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2937 struct GTY(()) tree_decl_with_vis {
2938 struct tree_decl_with_rtl common;
2939 tree assembler_name;
2942 /* Belong to VAR_DECL exclusively. */
2943 unsigned defer_output:1;
2944 unsigned hard_register:1;
2945 unsigned thread_local:1;
2946 unsigned common_flag:1;
2947 unsigned in_text_section : 1;
2948 unsigned dllimport_flag : 1;
2949 unsigned based_on_restrict_p : 1;
2950 /* Used by C++. Might become a generic decl flag. */
2951 unsigned shadowed_for_var_p : 1;
2953 /* Don't belong to VAR_DECL exclusively. */
2954 unsigned weak_flag:1;
2955 unsigned seen_in_bind_expr : 1;
2956 unsigned comdat_flag : 1;
2957 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2958 unsigned visibility_specified : 1;
2959 /* Belong to FUNCTION_DECL exclusively. */
2960 unsigned one_only : 1;
2961 unsigned init_priority_p:1;
2963 /* Belongs to VAR_DECL exclusively. */
2964 ENUM_BITFIELD(tls_model) tls_model : 3;
2965 /* 13 unused bits. */
2968 /* In a VAR_DECL that's static,
2969 nonzero if the space is in the text section. */
2970 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2972 /* Nonzero for a given ..._DECL node means that this node should be
2973 put in .common, if possible. If a DECL_INITIAL is given, and it
2974 is not error_mark_node, then the decl cannot be put in .common. */
2975 #define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2977 /* In a VAR_DECL, nonzero if the decl is a register variable with
2978 an explicit asm specification. */
2979 #define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2981 extern tree decl_debug_expr_lookup (tree);
2982 extern void decl_debug_expr_insert (tree, tree);
2983 /* For VAR_DECL, this is set to either an expression that it was split
2984 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2985 subexpressions that it was split into. */
2986 #define DECL_DEBUG_EXPR(NODE) \
2987 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2989 #define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2990 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2992 /* An initialization priority. */
2993 typedef unsigned short priority_type;
2995 extern priority_type decl_init_priority_lookup (tree);
2996 extern priority_type decl_fini_priority_lookup (tree);
2997 extern void decl_init_priority_insert (tree, priority_type);
2998 extern void decl_fini_priority_insert (tree, priority_type);
3000 /* In a non-local VAR_DECL with static storage duration, true if the
3001 variable has an initialization priority. If false, the variable
3002 will be initialized at the DEFAULT_INIT_PRIORITY. */
3003 #define DECL_HAS_INIT_PRIORITY_P(NODE) \
3004 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
3006 /* For a VAR_DECL or FUNCTION_DECL the initialization priority of
3008 #define DECL_INIT_PRIORITY(NODE) \
3009 (decl_init_priority_lookup (NODE))
3010 /* Set the initialization priority for NODE to VAL. */
3011 #define SET_DECL_INIT_PRIORITY(NODE, VAL) \
3012 (decl_init_priority_insert (NODE, VAL))
3014 /* For a FUNCTION_DECL the finalization priority of NODE. */
3015 #define DECL_FINI_PRIORITY(NODE) \
3016 (decl_fini_priority_lookup (NODE))
3017 /* Set the finalization priority for NODE to VAL. */
3018 #define SET_DECL_FINI_PRIORITY(NODE, VAL) \
3019 (decl_fini_priority_insert (NODE, VAL))
3021 /* The initialization priority for entities for which no explicit
3022 initialization priority has been specified. */
3023 #define DEFAULT_INIT_PRIORITY 65535
3025 /* The maximum allowed initialization priority. */
3026 #define MAX_INIT_PRIORITY 65535
3028 /* The largest priority value reserved for use by system runtime
3030 #define MAX_RESERVED_INIT_PRIORITY 100
3032 /* In a VAR_DECL, the model to use if the data should be allocated from
3033 thread-local storage. */
3034 #define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
3036 /* In a VAR_DECL, nonzero if the data should be allocated from
3037 thread-local storage. */
3038 #define DECL_THREAD_LOCAL_P(NODE) \
3039 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model >= TLS_MODEL_REAL)
3041 struct GTY(()) tree_var_decl {
3042 struct tree_decl_with_vis common;
3046 /* This field is used to reference anything in decl.result and is meant only
3047 for use by the garbage collector. */
3048 #define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
3050 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
3051 Before the struct containing the FUNCTION_DECL is laid out,
3052 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
3053 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
3054 function. When the class is laid out, this pointer is changed
3055 to an INTEGER_CST node which is suitable for use as an index
3056 into the virtual function table.
3057 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
3058 #define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
3061 tree_decl_non_common {
3062 struct tree_decl_with_vis common;
3063 /* C++ uses this in namespaces. */
3065 /* C++ uses this in templates. */
3067 /* Almost all FE's use this. */
3069 /* C++ uses this in namespaces. */
3073 /* In FUNCTION_DECL, holds the decl for the return value. */
3074 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
3076 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
3077 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
3079 /* In a FUNCTION_DECL, the saved representation of the body of the
3081 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3083 /* Nonzero in a FUNCTION_DECL means this function should be treated
3084 as if it were a malloc, meaning it returns a pointer that is
3086 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3088 /* Nonzero in a FUNCTION_DECL means this function should be treated as
3089 C++ operator new, meaning that it returns a pointer for which we
3090 should not use type based aliasing. */
3091 #define DECL_IS_OPERATOR_NEW(NODE) \
3092 (FUNCTION_DECL_CHECK (NODE)->function_decl.operator_new_flag)
3094 /* Nonzero in a FUNCTION_DECL means this function may return more
3096 #define DECL_IS_RETURNS_TWICE(NODE) \
3097 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3099 /* Nonzero in a FUNCTION_DECL means this function should be treated
3100 as "pure" function (like const function, but may read global memory). */
3101 #define DECL_PURE_P(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3103 /* Nonzero only if one of TREE_READONLY or DECL_PURE_P is nonzero AND
3104 the const or pure function may not terminate. When this is nonzero
3105 for a const or pure function, it can be dealt with by cse passes
3106 but cannot be removed by dce passes since you are not allowed to
3107 change an infinite looping program into one that terminates without
3109 #define DECL_LOOPING_CONST_OR_PURE_P(NODE) \
3110 (FUNCTION_DECL_CHECK (NODE)->function_decl.looping_const_or_pure_flag)
3112 /* Nonzero in a FUNCTION_DECL means this function should be treated
3113 as "novops" function (function that does not read global memory,
3114 but may have arbitrary side effects). */
3115 #define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3117 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
3118 at the beginning or end of execution. */
3119 #define DECL_STATIC_CONSTRUCTOR(NODE) \
3120 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3122 #define DECL_STATIC_DESTRUCTOR(NODE) \
3123 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3125 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
3126 be instrumented with calls to support routines. */
3127 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3128 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3130 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3131 disabled in this function. */
3132 #define DECL_NO_LIMIT_STACK(NODE) \
3133 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3135 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3136 static chain is not needed. */
3137 #define DECL_NO_STATIC_CHAIN(NODE) \
3138 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3140 /* Nonzero for a decl that cgraph has decided should be inlined into
3141 at least one call site. It is not meaningful to look at this
3142 directly; always use cgraph_function_possibly_inlined_p. */
3143 #define DECL_POSSIBLY_INLINED(DECL) \
3144 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3146 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3147 such as via the `inline' keyword in C/C++. This flag controls the linkage
3148 semantics of 'inline' */
3149 #define DECL_DECLARED_INLINE_P(NODE) \
3150 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3152 /* Nonzero in a FUNCTION_DECL means this function should not get
3153 -Winline warnings. */
3154 #define DECL_NO_INLINE_WARNING_P(NODE) \
3155 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_inline_warning_flag)
3157 /* Nonzero in a FUNCTION_DECL that should be always inlined by the inliner
3158 disregarding size and cost heuristics. This is equivalent to using
3159 the always_inline attribute without the required diagnostics if the
3160 function cannot be inlined. */
3161 #define DECL_DISREGARD_INLINE_LIMITS(NODE) \
3162 (FUNCTION_DECL_CHECK (NODE)->function_decl.disregard_inline_limits)
3164 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3165 that describes the status of this function. */
3166 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3168 /* In a FUNCTION_DECL, nonzero means a built in function. */
3169 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3171 /* For a builtin function, identify which part of the compiler defined it. */
3172 #define DECL_BUILT_IN_CLASS(NODE) \
3173 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3175 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
3176 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3178 #define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3179 #define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3181 /* In FUNCTION_DECL, the function specific target options to use when compiling
3183 #define DECL_FUNCTION_SPECIFIC_TARGET(NODE) \
3184 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_target)
3186 /* In FUNCTION_DECL, the function specific optimization options to use when
3187 compiling this function. */
3188 #define DECL_FUNCTION_SPECIFIC_OPTIMIZATION(NODE) \
3189 (FUNCTION_DECL_CHECK (NODE)->function_decl.function_specific_optimization)
3191 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3192 arguments/result/saved_tree fields by front ends. It was either inherit
3193 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3194 which seemed a bit strange. */
3196 struct GTY(()) tree_function_decl {
3197 struct tree_decl_non_common common;
3201 /* Function specific options that are used by this function. */
3202 tree function_specific_target; /* target options */
3203 tree function_specific_optimization; /* optimization options */
3205 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
3206 DECL_FUNCTION_CODE. Otherwise unused.
3207 ??? The bitfield needs to be able to hold all target function
3209 ENUM_BITFIELD(built_in_function) function_code : 11;
3210 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3212 unsigned static_ctor_flag : 1;
3213 unsigned static_dtor_flag : 1;
3214 unsigned uninlinable : 1;
3216 unsigned possibly_inlined : 1;
3217 unsigned novops_flag : 1;
3218 unsigned returns_twice_flag : 1;
3219 unsigned malloc_flag : 1;
3220 unsigned operator_new_flag : 1;
3221 unsigned declared_inline_flag : 1;
3222 unsigned regdecl_flag : 1;
3224 unsigned no_inline_warning_flag : 1;
3225 unsigned no_instrument_function_entry_exit : 1;
3226 unsigned no_limit_stack : 1;
3227 unsigned disregard_inline_limits : 1;
3228 unsigned pure_flag : 1;
3229 unsigned looping_const_or_pure_flag : 1;
3235 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3236 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3238 /* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3239 into stabs. Instead it will generate cross reference ('x') of names.
3240 This uses the same flag as DECL_EXTERNAL. */
3241 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3242 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_1)
3244 /* Getter of the imported declaration associated to the
3245 IMPORTED_DECL node. */
3246 #define IMPORTED_DECL_ASSOCIATED_DECL(NODE) \
3247 (DECL_INITIAL (IMPORTED_DECL_CHECK (NODE)))
3249 struct GTY(()) tree_type_decl {
3250 struct tree_decl_non_common common;
3254 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3255 To reduce overhead, the nodes containing the statements are not trees.
3256 This avoids the overhead of tree_common on all linked list elements.
3258 Use the interface in tree-iterator.h to access this node. */
3260 #define STATEMENT_LIST_HEAD(NODE) \
3261 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3262 #define STATEMENT_LIST_TAIL(NODE) \
3263 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3265 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
3267 struct tree_statement_list_node *prev;
3268 struct tree_statement_list_node *next;
3272 struct GTY(()) tree_statement_list
3274 struct tree_common common;
3275 struct tree_statement_list_node *head;
3276 struct tree_statement_list_node *tail;
3280 /* Optimization options used by a function. */
3282 struct GTY(()) tree_optimization_option {
3283 struct tree_common common;
3285 /* The optimization options used by the user. */
3286 struct cl_optimization opts;
3289 #define TREE_OPTIMIZATION(NODE) \
3290 (&OPTIMIZATION_NODE_CHECK (NODE)->optimization.opts)
3292 /* Return a tree node that encapsulates the current optimization options. */
3293 extern tree build_optimization_node (void);
3295 /* Target options used by a function. */
3297 struct GTY(()) tree_target_option {
3298 struct tree_common common;
3300 /* The optimization options used by the user. */
3301 struct cl_target_option opts;
3304 #define TREE_TARGET_OPTION(NODE) \
3305 (&TARGET_OPTION_NODE_CHECK (NODE)->target_option.opts)
3307 /* Return a tree node that encapsulates the current target options. */
3308 extern tree build_target_option_node (void);
3311 /* Define the overall contents of a tree node.
3312 It may be any of the structures declared above
3313 for various types of node. */
3315 union GTY ((ptr_alias (union lang_tree_node),
3316 desc ("tree_node_structure (&%h)"))) tree_node {
3317 struct tree_base GTY ((tag ("TS_BASE"))) base;
3318 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3319 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3320 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3321 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
3322 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3323 struct tree_string GTY ((tag ("TS_STRING"))) string;
3324 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3325 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3326 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3327 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3328 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3329 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3330 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3331 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3332 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3333 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3334 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3335 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3336 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3337 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3338 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3339 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3340 struct tree_list GTY ((tag ("TS_LIST"))) list;
3341 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3342 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3343 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3344 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3345 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3346 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3347 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3348 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3349 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
3350 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
3353 /* Standard named or nameless data types of the C compiler. */
3375 TI_INTEGER_MINUS_ONE,
3392 TI_COMPLEX_INTEGER_TYPE,
3393 TI_COMPLEX_FLOAT_TYPE,
3394 TI_COMPLEX_DOUBLE_TYPE,
3395 TI_COMPLEX_LONG_DOUBLE_TYPE,
3399 TI_LONG_DOUBLE_TYPE,
3403 TI_LONG_DOUBLE_PTR_TYPE,
3404 TI_INTEGER_PTR_TYPE,
3413 TI_VA_LIST_GPR_COUNTER_FIELD,
3414 TI_VA_LIST_FPR_COUNTER_FIELD,
3421 TI_DFLOAT32_PTR_TYPE,
3422 TI_DFLOAT64_PTR_TYPE,
3423 TI_DFLOAT128_PTR_TYPE,
3432 TI_SAT_LLFRACT_TYPE,
3433 TI_SAT_USFRACT_TYPE,
3435 TI_SAT_ULFRACT_TYPE,
3436 TI_SAT_ULLFRACT_TYPE,
3448 TI_SAT_LLACCUM_TYPE,
3449 TI_SAT_USACCUM_TYPE,
3451 TI_SAT_ULACCUM_TYPE,
3452 TI_SAT_ULLACCUM_TYPE,
3498 TI_OPTIMIZATION_DEFAULT,
3499 TI_OPTIMIZATION_CURRENT,
3500 TI_TARGET_OPTION_DEFAULT,
3501 TI_TARGET_OPTION_CURRENT,
3502 TI_CURRENT_TARGET_PRAGMA,
3503 TI_CURRENT_OPTIMIZE_PRAGMA,
3508 extern GTY(()) tree global_trees[TI_MAX];
3510 #define error_mark_node global_trees[TI_ERROR_MARK]
3512 #define intQI_type_node global_trees[TI_INTQI_TYPE]
3513 #define intHI_type_node global_trees[TI_INTHI_TYPE]
3514 #define intSI_type_node global_trees[TI_INTSI_TYPE]
3515 #define intDI_type_node global_trees[TI_INTDI_TYPE]
3516 #define intTI_type_node global_trees[TI_INTTI_TYPE]
3518 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3519 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3520 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3521 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3522 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3524 #define uint32_type_node global_trees[TI_UINT32_TYPE]
3525 #define uint64_type_node global_trees[TI_UINT64_TYPE]
3527 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
3528 #define integer_one_node global_trees[TI_INTEGER_ONE]
3529 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3530 #define size_zero_node global_trees[TI_SIZE_ZERO]
3531 #define size_one_node global_trees[TI_SIZE_ONE]
3532 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3533 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3534 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3536 /* Base access nodes. */
3537 #define access_public_node global_trees[TI_PUBLIC]
3538 #define access_protected_node global_trees[TI_PROTECTED]
3539 #define access_private_node global_trees[TI_PRIVATE]
3541 #define null_pointer_node global_trees[TI_NULL_POINTER]
3543 #define float_type_node global_trees[TI_FLOAT_TYPE]
3544 #define double_type_node global_trees[TI_DOUBLE_TYPE]
3545 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3547 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3548 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3549 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]