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 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
27 #include "statistics.h"
30 /* Codes of tree nodes */
32 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
37 LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for
43 /* Number of language-independent tree codes. */
44 #define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
46 /* Tree code classes. */
48 /* Each tree_code has an associated code class represented by a
51 enum tree_code_class {
52 tcc_exceptional, /* An exceptional code (fits no category). */
53 tcc_constant, /* A constant. */
54 tcc_type, /* A type object code. */
55 tcc_declaration, /* A declaration (also serving as variable refs). */
56 tcc_reference, /* A reference to storage. */
57 tcc_comparison, /* A comparison expression. */
58 tcc_unary, /* A unary arithmetic expression. */
59 tcc_binary, /* A binary arithmetic expression. */
60 tcc_statement, /* A statement expression, which have side effects
61 but usually no interesting value. */
62 tcc_expression /* Any other expression. */
65 /* Each tree code class has an associated string representation.
66 These must correspond to the tree_code_class entries. */
68 extern const char *const tree_code_class_strings[];
70 /* Returns the string representing CLASS. */
72 #define TREE_CODE_CLASS_STRING(CLASS)\
73 tree_code_class_strings[(int) (CLASS)]
75 #define MAX_TREE_CODES 256
76 extern const enum tree_code_class tree_code_type[];
77 #define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
79 /* Nonzero if CODE represents an exceptional code. */
81 #define EXCEPTIONAL_CLASS_P(CODE)\
82 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
84 /* Nonzero if CODE represents a constant. */
86 #define CONSTANT_CLASS_P(CODE)\
87 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
89 /* Nonzero if CODE represents a type. */
92 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
94 /* Nonzero if CODE represents a declaration. */
97 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
99 /* Nonzero if CODE represents a reference. */
101 #define REFERENCE_CLASS_P(CODE)\
102 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
104 /* Nonzero if CODE represents a comparison. */
106 #define COMPARISON_CLASS_P(CODE)\
107 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
109 /* Nonzero if CODE represents a unary arithmetic expression. */
111 #define UNARY_CLASS_P(CODE)\
112 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
114 /* Nonzero if CODE represents a binary arithmetic expression. */
116 #define BINARY_CLASS_P(CODE)\
117 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
119 /* Nonzero if CODE represents a statement expression. */
121 #define STATEMENT_CLASS_P(CODE)\
122 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
124 /* Nonzero if CODE represents any other expression. */
126 #define EXPRESSION_CLASS_P(CODE)\
127 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
129 /* Returns nonzero iff CLASS is not the tree code of a type. */
131 #define IS_NON_TYPE_CODE_CLASS(CLASS) ((CLASS) != tcc_type)
133 /* Returns nonzero iff CODE represents a type or declaration. */
135 #define IS_TYPE_OR_DECL_P(CODE)\
136 (TYPE_P (CODE) || DECL_P (CODE))
138 /* Returns nonzero iff CLASS is the tree-code class of an
141 #define IS_EXPR_CODE_CLASS(CLASS)\
142 (((CLASS) >= tcc_reference) && ((CLASS) <= tcc_expression))
144 /* Returns nonzero iff NODE is an expression of some kind. */
146 #define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
148 /* Number of argument-words in each kind of tree-node. */
150 extern const unsigned char tree_code_length[];
151 #define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
153 /* Names of tree components. */
155 extern const char *const tree_code_name[];
157 /* A garbage collected vector of trees. */
161 /* Classify which part of the compiler has defined a given builtin function.
162 Note that we assume below that this is no more than two bits. */
171 /* Names for the above. */
172 extern const char *const built_in_class_names[4];
174 /* Codes that identify the various built in functions
175 so that expand_call can identify them quickly. */
177 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM) ENUM,
178 enum built_in_function
180 #include "builtins.def"
182 /* Upper bound on non-language-specific builtins. */
187 /* Names for the above. */
188 extern const char *const built_in_names[(int) END_BUILTINS];
190 /* Helper macros for math builtins. */
192 #define BUILTIN_EXP10_P(FN) \
193 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
194 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
196 #define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
197 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
198 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
200 #define BUILTIN_SQRT_P(FN) \
201 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
203 #define BUILTIN_CBRT_P(FN) \
204 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
206 #define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
208 /* An array of _DECL trees for the above. */
209 extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
210 extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
212 /* The definition of tree nodes fills the next several pages. */
214 /* A tree node can represent a data type, a variable, an expression
215 or a statement. Each node has a TREE_CODE which says what kind of
216 thing it represents. Some common codes are:
217 INTEGER_TYPE -- represents a type of integers.
218 ARRAY_TYPE -- represents a type of pointer.
219 VAR_DECL -- represents a declared variable.
220 INTEGER_CST -- represents a constant integer value.
221 PLUS_EXPR -- represents a sum (an expression).
223 As for the contents of a tree node: there are some fields
224 that all nodes share. Each TREE_CODE has various special-purpose
225 fields as well. The fields of a node are never accessed directly,
226 always through accessor macros. */
228 /* Every kind of tree node starts with this structure,
229 so all nodes have these fields.
231 See the accessor macros, defined below, for documentation of the
235 struct tree_common GTY(())
239 union tree_ann_d *ann;
241 ENUM_BITFIELD(tree_code) code : 8;
243 unsigned side_effects_flag : 1;
244 unsigned constant_flag : 1;
245 unsigned addressable_flag : 1;
246 unsigned volatile_flag : 1;
247 unsigned readonly_flag : 1;
248 unsigned unsigned_flag : 1;
249 unsigned asm_written_flag: 1;
250 unsigned nowarning_flag : 1;
252 unsigned used_flag : 1;
253 unsigned nothrow_flag : 1;
254 unsigned static_flag : 1;
255 unsigned public_flag : 1;
256 unsigned private_flag : 1;
257 unsigned protected_flag : 1;
258 unsigned deprecated_flag : 1;
259 unsigned invariant_flag : 1;
261 unsigned lang_flag_0 : 1;
262 unsigned lang_flag_1 : 1;
263 unsigned lang_flag_2 : 1;
264 unsigned lang_flag_3 : 1;
265 unsigned lang_flag_4 : 1;
266 unsigned lang_flag_5 : 1;
267 unsigned lang_flag_6 : 1;
268 unsigned visited : 1;
271 /* The following table lists the uses of each of the above flags and
272 for which types of nodes they are defined. Note that expressions
278 VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL,
279 ..._TYPE, IDENTIFIER_NODE.
280 In a STMT_EXPR, it means we want the result of the enclosed
282 CALL_EXPR_TAILCALL in CALL_EXPR
287 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR
290 TREE_CONSTANT_OVERFLOW in
291 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
292 TREE_SYMBOL_REFERENCED in
295 TARGET_EXPR, WITH_CLEANUP_EXPR
298 EH_FILTER_MUST_NOT_THROW in EH_FILTER_EXPR
299 TYPE_REF_CAN_ALIAS_ALL in
300 POINTER_TYPE, REFERENCE_TYPE
305 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
306 ??? and other expressions?
308 VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
311 TYPE_CACHED_VALUES_P in
313 SAVE_EXPR_RESOLVED_P in
320 CALL_EXPR_HAS_RETURN_SLOT_ADDR in
323 PARM_DECL, RESULT_DECL
345 TREE_THIS_VOLATILE in
370 BIT_FIELD_REF_UNSIGNED in
376 VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
382 expressions, IDENTIFIER_NODE
387 CALL_EXPR, FUNCTION_DECL
393 INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
402 Used in tree traversals to mark visited nodes.
412 ... any expr or decl node
415 /* Define accessors for the fields that all tree nodes have
416 (though some fields are not used for all kinds of nodes). */
418 /* The tree-code says what kind of node it is.
419 Codes are defined in tree.def. */
420 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code)
421 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (VALUE))
423 /* When checking is enabled, errors will be generated if a tree node
424 is accessed incorrectly. The macros abort with a fatal error. */
425 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
427 #define TREE_CHECK(T, CODE) __extension__ \
428 ({ const tree __t = (T); \
429 if (TREE_CODE (__t) != (CODE)) \
430 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
434 #define TREE_NOT_CHECK(T, CODE) __extension__ \
435 ({ const tree __t = (T); \
436 if (TREE_CODE (__t) == (CODE)) \
437 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
441 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
442 ({ const tree __t = (T); \
443 if (TREE_CODE (__t) != (CODE1) \
444 && TREE_CODE (__t) != (CODE2)) \
445 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
446 (CODE1), (CODE2), 0); \
449 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
450 ({ const tree __t = (T); \
451 if (TREE_CODE (__t) == (CODE1) \
452 || TREE_CODE (__t) == (CODE2)) \
453 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
454 (CODE1), (CODE2), 0); \
457 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
458 ({ const tree __t = (T); \
459 if (TREE_CODE (__t) != (CODE1) \
460 && TREE_CODE (__t) != (CODE2) \
461 && TREE_CODE (__t) != (CODE3)) \
462 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
463 (CODE1), (CODE2), (CODE3), 0); \
466 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
467 ({ const tree __t = (T); \
468 if (TREE_CODE (__t) == (CODE1) \
469 || TREE_CODE (__t) == (CODE2) \
470 || TREE_CODE (__t) == (CODE3)) \
471 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
472 (CODE1), (CODE2), (CODE3), 0); \
475 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
476 ({ const tree __t = (T); \
477 if (TREE_CODE (__t) != (CODE1) \
478 && TREE_CODE (__t) != (CODE2) \
479 && TREE_CODE (__t) != (CODE3) \
480 && TREE_CODE (__t) != (CODE4)) \
481 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
482 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
485 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
486 ({ const tree __t = (T); \
487 if (TREE_CODE (__t) == (CODE1) \
488 || TREE_CODE (__t) == (CODE2) \
489 || TREE_CODE (__t) == (CODE3) \
490 || TREE_CODE (__t) == (CODE4)) \
491 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
492 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
495 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
496 ({ const tree __t = (T); \
497 if (TREE_CODE (__t) != (CODE1) \
498 && TREE_CODE (__t) != (CODE2) \
499 && TREE_CODE (__t) != (CODE3) \
500 && TREE_CODE (__t) != (CODE4) \
501 && TREE_CODE (__t) != (CODE5)) \
502 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
503 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
506 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
507 ({ const tree __t = (T); \
508 if (TREE_CODE (__t) == (CODE1) \
509 || TREE_CODE (__t) == (CODE2) \
510 || TREE_CODE (__t) == (CODE3) \
511 || TREE_CODE (__t) == (CODE4) \
512 || TREE_CODE (__t) == (CODE5)) \
513 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
514 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
517 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
518 ({ const tree __t = (T); \
519 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
520 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
524 /* These checks have to be special cased. */
525 #define EXPR_CHECK(T) __extension__ \
526 ({ const tree __t = (T); \
527 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
528 if (!IS_EXPR_CODE_CLASS (__c)) \
529 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
533 /* These checks have to be special cased. */
534 #define NON_TYPE_CHECK(T) __extension__ \
535 ({ const tree __t = (T); \
536 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
537 if (!IS_NON_TYPE_CODE_CLASS (__c)) \
538 tree_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
542 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
543 (*({const tree __t = (T); \
544 const int __i = (I); \
545 if (TREE_CODE (__t) != TREE_VEC) \
546 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
548 if (__i < 0 || __i >= __t->vec.length) \
549 tree_vec_elt_check_failed (__i, __t->vec.length, \
550 __FILE__, __LINE__, __FUNCTION__); \
551 &__t->vec.a[__i]; }))
553 #define PHI_NODE_ELT_CHECK(t, i) __extension__ \
554 (*({const tree __t = t; \
555 const int __i = (i); \
556 if (TREE_CODE (__t) != PHI_NODE) \
557 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
559 if (__i < 0 || __i >= __t->phi.capacity) \
560 phi_node_elt_check_failed (__i, __t->phi.num_args, \
561 __FILE__, __LINE__, __FUNCTION__); \
562 &__t->phi.a[__i]; }))
564 /* Special checks for TREE_OPERANDs. */
565 #define TREE_OPERAND_CHECK(T, I) __extension__ \
566 (*({const tree __t = EXPR_CHECK (T); \
567 const int __i = (I); \
568 if (__i < 0 || __i >= TREE_CODE_LENGTH (TREE_CODE (__t))) \
569 tree_operand_check_failed (__i, TREE_CODE (__t), \
570 __FILE__, __LINE__, __FUNCTION__); \
571 &__t->exp.operands[__i]; }))
573 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
574 (*({const tree __t = (T); \
575 const int __i = (I); \
576 if (TREE_CODE (__t) != CODE) \
577 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
578 if (__i < 0 || __i >= TREE_CODE_LENGTH (CODE)) \
579 tree_operand_check_failed (__i, (CODE), \
580 __FILE__, __LINE__, __FUNCTION__); \
581 &__t->exp.operands[__i]; }))
583 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
585 ({const tree __t = (T); \
586 const int __i = (I); \
587 if (TREE_CODE (__t) != (CODE)) \
588 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
589 if (__i < 0 || __i >= TREE_CODE_LENGTH ((CODE))) \
590 tree_operand_check_failed (__i, (CODE), \
591 __FILE__, __LINE__, __FUNCTION__); \
592 &__t->exp.operands[__i]; }))
594 extern void tree_check_failed (const tree, const char *, int, const char *,
595 ...) ATTRIBUTE_NORETURN;
596 extern void tree_not_check_failed (const tree, const char *, int, const char *,
597 ...) ATTRIBUTE_NORETURN;
598 extern void tree_class_check_failed (const tree, const enum tree_code_class,
599 const char *, int, const char *)
601 extern void tree_vec_elt_check_failed (int, int, const char *,
604 extern void phi_node_elt_check_failed (int, int, const char *,
607 extern void tree_operand_check_failed (int, enum tree_code,
608 const char *, int, const char *)
611 #else /* not ENABLE_TREE_CHECKING, or not gcc */
613 #define TREE_CHECK(T, CODE) (T)
614 #define TREE_NOT_CHECK(T, CODE) (T)
615 #define TREE_CHECK2(T, CODE1, CODE2) (T)
616 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
617 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
618 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
619 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
620 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
621 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
622 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
623 #define TREE_CLASS_CHECK(T, CODE) (T)
624 #define EXPR_CHECK(T) (T)
625 #define NON_TYPE_CHECK(T) (T)
626 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
627 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
628 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
629 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
630 #define PHI_NODE_ELT_CHECK(T, i) ((T)->phi.a[i])
634 #define TREE_BLOCK(NODE) ((NODE)->exp.block)
636 #include "tree-check.h"
638 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
639 #define DECL_CHECK(T) TREE_CLASS_CHECK (T, tcc_declaration)
640 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
641 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
642 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
643 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
645 #define SET_OR_ARRAY_CHECK(T) \
646 TREE_CHECK2 (T, ARRAY_TYPE, SET_TYPE)
648 #define RECORD_OR_UNION_CHECK(T) \
649 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
650 #define NOT_RECORD_OR_UNION_CHECK(T) \
651 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
653 #define NUMERICAL_TYPE_CHECK(T) \
654 TREE_CHECK5 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, \
655 CHAR_TYPE, REAL_TYPE)
657 /* In all nodes that are expressions, this is the data type of the expression.
658 In POINTER_TYPE nodes, this is the type that the pointer points to.
659 In ARRAY_TYPE nodes, this is the type of the elements.
660 In VECTOR_TYPE nodes, this is the type of the elements. */
661 #define TREE_TYPE(NODE) ((NODE)->common.type)
663 /* Here is how primitive or already-canonicalized types' hash codes
665 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
667 /* A simple hash function for an arbitrary tree node. This must not be
668 used in hash tables which are saved to a PCH. */
669 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
671 /* Nodes are chained together for many purposes.
672 Types are chained together to record them for being output to the debugger
673 (see the function `chain_type').
674 Decls in the same scope are chained together to record the contents
676 Statement nodes for successive statements used to be chained together.
677 Often lists of things are represented by TREE_LIST nodes that
678 are chained together. */
680 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
682 /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
683 that don't change the machine mode. */
685 #define STRIP_NOPS(EXP) \
686 while ((TREE_CODE (EXP) == NOP_EXPR \
687 || TREE_CODE (EXP) == CONVERT_EXPR \
688 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
689 && TREE_OPERAND (EXP, 0) != error_mark_node \
690 && (TYPE_MODE (TREE_TYPE (EXP)) \
691 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
692 (EXP) = TREE_OPERAND (EXP, 0)
694 /* Like STRIP_NOPS, but don't let the signedness change either. */
696 #define STRIP_SIGN_NOPS(EXP) \
697 while ((TREE_CODE (EXP) == NOP_EXPR \
698 || TREE_CODE (EXP) == CONVERT_EXPR \
699 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
700 && TREE_OPERAND (EXP, 0) != error_mark_node \
701 && (TYPE_MODE (TREE_TYPE (EXP)) \
702 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
703 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
704 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
705 (EXP) = TREE_OPERAND (EXP, 0)
707 /* Like STRIP_NOPS, but don't alter the TREE_TYPE main variant either. */
709 #define STRIP_MAIN_TYPE_NOPS(EXP) \
710 while ((TREE_CODE (EXP) == NOP_EXPR \
711 || TREE_CODE (EXP) == CONVERT_EXPR \
712 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
713 && TREE_OPERAND (EXP, 0) != error_mark_node \
714 && (TYPE_MAIN_VARIANT (TREE_TYPE (EXP)) \
715 == TYPE_MAIN_VARIANT (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
716 (EXP) = TREE_OPERAND (EXP, 0)
718 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
720 #define STRIP_TYPE_NOPS(EXP) \
721 while ((TREE_CODE (EXP) == NOP_EXPR \
722 || TREE_CODE (EXP) == CONVERT_EXPR \
723 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
724 && TREE_OPERAND (EXP, 0) != error_mark_node \
725 && (TREE_TYPE (EXP) \
726 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
727 (EXP) = TREE_OPERAND (EXP, 0)
729 /* Remove unnecessary type conversions according to
730 tree_ssa_useless_type_conversion. */
732 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
733 while (tree_ssa_useless_type_conversion (EXP)) \
734 EXP = TREE_OPERAND (EXP, 0)
736 /* Nonzero if TYPE represents an integral type. Note that we do not
737 include COMPLEX types here. */
739 #define INTEGRAL_TYPE_P(TYPE) \
740 (TREE_CODE (TYPE) == INTEGER_TYPE || TREE_CODE (TYPE) == ENUMERAL_TYPE \
741 || TREE_CODE (TYPE) == BOOLEAN_TYPE || TREE_CODE (TYPE) == CHAR_TYPE)
743 /* Nonzero if TYPE represents a scalar floating-point type. */
745 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
747 /* Nonzero if TYPE represents a complex floating-point type. */
749 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
750 (TREE_CODE (TYPE) == COMPLEX_TYPE \
751 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
753 /* Nonzero if TYPE represents a vector floating-point type. */
755 #define VECTOR_FLOAT_TYPE_P(TYPE) \
756 (TREE_CODE (TYPE) == VECTOR_TYPE \
757 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
759 /* Nonzero if TYPE represents a floating-point type, including complex
760 and vector floating-point types. */
762 #define FLOAT_TYPE_P(TYPE) \
763 (SCALAR_FLOAT_TYPE_P (TYPE) || COMPLEX_FLOAT_TYPE_P (TYPE) \
764 || VECTOR_FLOAT_TYPE_P (TYPE))
766 /* Nonzero if TYPE represents an aggregate (multi-component) type. */
768 #define AGGREGATE_TYPE_P(TYPE) \
769 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
770 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE \
771 || TREE_CODE (TYPE) == SET_TYPE)
773 /* Nonzero if TYPE represents a pointer or reference type.
774 (It should be renamed to INDIRECT_TYPE_P.) */
776 #define POINTER_TYPE_P(TYPE) \
777 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
779 /* Nonzero if this type is a complete type. */
780 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
782 /* Nonzero if this type is the (possibly qualified) void type. */
783 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
785 /* Nonzero if this type is complete or is cv void. */
786 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
787 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
789 /* Nonzero if this type is complete or is an array with unspecified bound. */
790 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
791 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
794 /* Define many boolean fields that all tree nodes have. */
796 /* In VAR_DECL nodes, nonzero means address of this is needed.
797 So it cannot be in a register.
798 In a FUNCTION_DECL, nonzero means its address is needed.
799 So it must be compiled even if it is an inline function.
800 In a FIELD_DECL node, it means that the programmer is permitted to
801 construct the address of this field. This is used for aliasing
802 purposes: see record_component_aliases.
803 In CONSTRUCTOR nodes, it means object constructed must be in memory.
804 In LABEL_DECL nodes, it means a goto for this label has been seen
805 from a place outside all binding contours that restore stack levels.
806 In ..._TYPE nodes, it means that objects of this type must
807 be fully addressable. This means that pieces of this
808 object cannot go into register parameters, for example.
809 In IDENTIFIER_NODEs, this means that some extern decl for this name
810 had its address taken. That matters for inline functions. */
811 #define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag)
813 #define CALL_EXPR_TAILCALL(NODE) (CALL_EXPR_CHECK(NODE)->common.addressable_flag)
815 /* In a VAR_DECL, nonzero means allocate static storage.
816 In a FUNCTION_DECL, nonzero if function has been defined.
817 In a CONSTRUCTOR, nonzero means allocate static storage.
819 ??? This is also used in lots of other nodes in unclear ways which
820 should be cleaned up some day. */
821 #define TREE_STATIC(NODE) ((NODE)->common.static_flag)
823 /* In a TARGET_EXPR, WITH_CLEANUP_EXPR, means that the pertinent cleanup
824 should only be executed if an exception is thrown, not on normal exit
826 #define CLEANUP_EH_ONLY(NODE) ((NODE)->common.static_flag)
828 /* In an expr node (usually a conversion) this means the node was made
829 implicitly and should not lead to any sort of warning. In a decl node,
830 warnings concerning the decl should be suppressed. This is used at
831 least for used-before-set warnings, and it set after one warning is
833 #define TREE_NO_WARNING(NODE) ((NODE)->common.nowarning_flag)
835 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST this means
836 there was an overflow in folding. This is distinct from
837 TREE_OVERFLOW because ANSI C requires a diagnostic when overflows
838 occur in constant expressions. */
839 #define TREE_CONSTANT_OVERFLOW(NODE) (CST_CHECK (NODE)->common.static_flag)
841 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
842 this string as an argument. */
843 #define TREE_SYMBOL_REFERENCED(NODE) \
844 (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
846 /* Nonzero in a pointer or reference type means the data pointed to
847 by this type can alias anything. */
848 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
849 (PTR_OR_REF_CHECK (NODE)->common.static_flag)
851 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
852 there was an overflow in folding, and no warning has been issued
853 for this subexpression. TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW,
856 ??? Apparently, lots of code assumes this is defined in all
858 #define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag)
860 /* In a VAR_DECL or FUNCTION_DECL,
861 nonzero means name is to be accessible from outside this module.
862 In an IDENTIFIER_NODE, nonzero means an external declaration
863 accessible from outside this module was previously seen
864 for this name in an inner scope. */
865 #define TREE_PUBLIC(NODE) ((NODE)->common.public_flag)
867 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
868 of cached values, or is something else. */
869 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->common.public_flag)
871 /* In a SAVE_EXPR, indicates that the original expression has already
872 been substituted with a VAR_DECL that contains the value. */
873 #define SAVE_EXPR_RESOLVED_P(NODE) \
874 (TREE_CHECK (NODE, SAVE_EXPR)->common.public_flag)
876 /* In any expression, decl, or constant, nonzero means it has side effects or
877 reevaluation of the whole expression could produce a different value.
878 This is set if any subexpression is a function call, a side effect or a
879 reference to a volatile variable. In a ..._DECL, this is set only if the
880 declaration said `volatile'. This will never be set for a constant. */
881 #define TREE_SIDE_EFFECTS(NODE) \
882 (NON_TYPE_CHECK (NODE)->common.side_effects_flag)
884 /* In a LABEL_DECL, nonzero means this label had its address taken
885 and therefore can never be deleted and is a jump target for
887 #define FORCED_LABEL(NODE) ((NODE)->common.side_effects_flag)
889 /* Nonzero means this expression is volatile in the C sense:
890 its address should be of type `volatile WHATEVER *'.
891 In other words, the declared item is volatile qualified.
892 This is used in _DECL nodes and _REF nodes.
894 In a ..._TYPE node, means this type is volatile-qualified.
895 But use TYPE_VOLATILE instead of this macro when the node is a type,
896 because eventually we may make that a different bit.
898 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
899 #define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag)
901 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
902 accessing the memory pointed to won't generate a trap. However,
903 this only applies to an object when used appropriately: it doesn't
904 mean that writing a READONLY mem won't trap.
906 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
907 (or slice of the array) always belongs to the range of the array.
908 I.e. that the access will not trap, provided that the access to
909 the base to the array will not trap. */
910 #define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
912 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
913 nonzero means it may not be the lhs of an assignment. */
914 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)
916 /* Nonzero if NODE is a _DECL with TREE_READONLY set. */
917 #define TREE_READONLY_DECL_P(NODE)\
918 (DECL_P (NODE) && TREE_READONLY (NODE))
920 /* Value of expression is constant. Always on in all ..._CST nodes. May
921 also appear in an expression or decl where the value is constant. */
922 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->common.constant_flag)
924 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
925 #define DECL_UNSIGNED(NODE) (DECL_CHECK (NODE)->common.unsigned_flag)
927 /* In a BIT_FIELD_REF, means the bitfield is to be interpreted as unsigned. */
928 #define BIT_FIELD_REF_UNSIGNED(NODE) \
929 (BIT_FIELD_REF_CHECK (NODE)->common.unsigned_flag)
931 /* In integral and pointer types, means an unsigned type. */
932 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->common.unsigned_flag)
934 #define TYPE_TRAP_SIGNED(NODE) \
935 (flag_trapv && ! TYPE_UNSIGNED (NODE))
937 /* Nonzero in a VAR_DECL means assembler code has been written.
938 Nonzero in a FUNCTION_DECL means that the function has been compiled.
939 This is interesting in an inline function, since it might not need
940 to be compiled separately.
941 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
942 if the sdb debugging info for the type has been written.
943 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
944 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
946 #define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag)
948 /* Nonzero in a _DECL if the name is used in its scope.
949 Nonzero in an expr node means inhibit warning if value is unused.
950 In IDENTIFIER_NODEs, this means that some extern decl for this name
952 #define TREE_USED(NODE) ((NODE)->common.used_flag)
954 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
955 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
956 #define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
958 /* In a CALL_EXPR, means that the address of the return slot is part of the
960 #define CALL_EXPR_HAS_RETURN_SLOT_ADDR(NODE) ((NODE)->common.private_flag)
962 /* In a RESULT_DECL or PARM_DECL, means that it is passed by invisible
963 reference (and the TREE_TYPE is a pointer to the true type). */
964 #define DECL_BY_REFERENCE(NODE) (DECL_CHECK (NODE)->common.private_flag)
966 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
967 thunked-to function. */
968 #define CALL_FROM_THUNK_P(NODE) ((NODE)->common.protected_flag)
970 /* In a type, nonzero means that all objects of the type are guaranteed by the
971 language or front-end to be properly aligned, so we can indicate that a MEM
972 of this type is aligned at least to the alignment of the type, even if it
973 doesn't appear that it is. We see this, for example, in object-oriented
974 languages where a tag field may show this is an object of a more-aligned
975 variant of the more generic type.
977 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
979 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->common.nothrow_flag)
981 /* Used in classes in C++. */
982 #define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
983 /* Used in classes in C++.
984 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */
985 #define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag)
987 /* Nonzero in an IDENTIFIER_NODE if the use of the name is defined as a
988 deprecated feature by __attribute__((deprecated)). */
989 #define TREE_DEPRECATED(NODE) ((NODE)->common.deprecated_flag)
991 /* Value of expression is function invariant. A strict subset of
992 TREE_CONSTANT, such an expression is constant over any one function
993 invocation, though not across different invocations. May appear in
994 any expression node. */
995 #define TREE_INVARIANT(NODE) ((NODE)->common.invariant_flag)
997 /* These flags are available for each language front end to use internally. */
998 #define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
999 #define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
1000 #define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2)
1001 #define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3)
1002 #define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4)
1003 #define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5)
1004 #define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6)
1006 /* Define additional fields and accessors for nodes representing constants. */
1008 /* In an INTEGER_CST node. These two together make a 2-word integer.
1009 If the data type is signed, the value is sign-extended to 2 words
1010 even though not all of them may really be in use.
1011 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1012 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1013 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1014 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1016 #define INT_CST_LT(A, B) \
1017 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1018 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1019 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1021 #define INT_CST_LT_UNSIGNED(A, B) \
1022 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1023 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1024 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1025 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1026 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1028 struct tree_int_cst GTY(())
1030 struct tree_common common;
1031 /* A sub-struct is necessary here because the function `const_hash'
1032 wants to scan both words as a unit and taking the address of the
1033 sub-struct yields the properly inclusive bounded pointer. */
1034 struct tree_int_cst_lowhi {
1035 unsigned HOST_WIDE_INT low;
1040 /* In a REAL_CST node. struct real_value is an opaque entity, with
1041 manipulators defined in real.h. We don't want tree.h depending on
1042 real.h and transitively on tm.h. */
1045 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1046 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1048 struct tree_real_cst GTY(())
1050 struct tree_common common;
1051 struct real_value * real_cst_ptr;
1054 /* In a STRING_CST */
1055 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1056 #define TREE_STRING_POINTER(NODE) (STRING_CST_CHECK (NODE)->string.str)
1058 struct tree_string GTY(())
1060 struct tree_common common;
1065 /* In a COMPLEX_CST node. */
1066 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1067 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1069 struct tree_complex GTY(())
1071 struct tree_common common;
1076 /* In a VECTOR_CST node. */
1077 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1079 struct tree_vector GTY(())
1081 struct tree_common common;
1087 /* Define fields and accessors for some special-purpose tree nodes. */
1089 #define IDENTIFIER_LENGTH(NODE) \
1090 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1091 #define IDENTIFIER_POINTER(NODE) \
1092 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1093 #define IDENTIFIER_HASH_VALUE(NODE) \
1094 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1096 /* Translate a hash table identifier pointer to a tree_identifier
1097 pointer, and vice versa. */
1099 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1100 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1101 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1103 struct tree_identifier GTY(())
1105 struct tree_common common;
1106 struct ht_identifier id;
1109 /* In a TREE_LIST node. */
1110 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1111 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1113 struct tree_list GTY(())
1115 struct tree_common common;
1120 /* In a TREE_VEC node. */
1121 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1122 #define TREE_VEC_END(NODE) \
1123 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1125 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1127 struct tree_vec GTY(())
1129 struct tree_common common;
1131 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1134 /* Define fields and accessors for some nodes that represent expressions. */
1136 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1137 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1138 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1139 && integer_zerop (TREE_OPERAND (NODE, 0)))
1141 /* In a CONSTRUCTOR node. */
1142 #define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND_CHECK_CODE (NODE, CONSTRUCTOR, 0)
1144 /* In ordinary expression nodes. */
1145 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1146 #define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity)
1148 /* In INDIRECT_REF. */
1149 #define REF_ORIGINAL(NODE) TREE_CHAIN (TREE_CHECK (NODE, INDIRECT_REF))
1151 /* In a LABELED_BLOCK_EXPR node. */
1152 #define LABELED_BLOCK_LABEL(NODE) \
1153 TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 0)
1154 #define LABELED_BLOCK_BODY(NODE) \
1155 TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 1)
1157 /* In an EXIT_BLOCK_EXPR node. */
1158 #define EXIT_BLOCK_LABELED_BLOCK(NODE) \
1159 TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 0)
1160 #define EXIT_BLOCK_RETURN(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 1)
1162 /* In a LOOP_EXPR node. */
1163 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1165 #ifdef USE_MAPPED_LOCATION
1166 /* The source location of this expression. Non-tree_exp nodes such as
1167 decls and constants can be shared among multiple locations, so
1169 #define EXPR_LOCATION(NODE) \
1170 (EXPR_P (NODE) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1171 #define SET_EXPR_LOCATION(NODE, FROM) \
1172 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1173 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1174 /* EXPR_LOCUS and SET_EXPR_LOCUS are deprecated. */
1175 #define EXPR_LOCUS(NODE) \
1176 (EXPR_P (NODE) ? &(NODE)->exp.locus : (location_t *)NULL)
1177 #define SET_EXPR_LOCUS(NODE, FROM) \
1178 do { source_location *loc_tmp = FROM; \
1179 EXPR_CHECK (NODE)->exp.locus \
1180 = loc_tmp == NULL ? UNKNOWN_LOCATION : *loc_tmp; } while (0)
1181 #define EXPR_FILENAME(NODE) \
1182 LOCATION_FILE (EXPR_CHECK (NODE)->exp.locus)
1183 #define EXPR_LINENO(NODE) \
1184 LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1186 /* The source location of this expression. Non-tree_exp nodes such as
1187 decls and constants can be shared among multiple locations, so
1189 #define EXPR_LOCUS(NODE) \
1190 (EXPR_P (NODE) ? (NODE)->exp.locus : (location_t *)NULL)
1191 #define SET_EXPR_LOCUS(NODE, FROM) \
1192 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1193 #define SET_EXPR_LOCATION(NODE, FROM) annotate_with_locus (NODE, FROM)
1194 #define EXPR_FILENAME(NODE) \
1195 (EXPR_CHECK (NODE)->exp.locus->file)
1196 #define EXPR_LINENO(NODE) \
1197 (EXPR_CHECK (NODE)->exp.locus->line)
1198 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCUS (NODE) != NULL)
1199 #define EXPR_LOCATION(NODE) \
1200 (EXPR_HAS_LOCATION(NODE) ? *(NODE)->exp.locus : UNKNOWN_LOCATION)
1203 /* In a TARGET_EXPR node. */
1204 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1205 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1206 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1208 /* DECL_EXPR accessor. This gives access to the DECL associated with
1209 the given declaration statement. */
1210 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1212 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1214 /* SWITCH_EXPR accessors. These give access to the condition, body and
1215 original condition type (before any compiler conversions)
1216 of the switch statement, respectively. */
1217 #define SWITCH_COND(NODE) TREE_OPERAND ((NODE), 0)
1218 #define SWITCH_BODY(NODE) TREE_OPERAND ((NODE), 1)
1219 #define SWITCH_LABELS(NODE) TREE_OPERAND ((NODE), 2)
1221 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1222 of a case label, respectively. */
1223 #define CASE_LOW(NODE) TREE_OPERAND ((NODE), 0)
1224 #define CASE_HIGH(NODE) TREE_OPERAND ((NODE), 1)
1225 #define CASE_LABEL(NODE) TREE_OPERAND ((NODE), 2)
1227 /* The operands of a BIND_EXPR. */
1228 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1229 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1230 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1232 /* GOTO_EXPR accessor. This gives access to the label associated with
1233 a goto statement. */
1234 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1236 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1237 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1238 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1240 #define ASM_STRING(NODE) TREE_OPERAND ((NODE), 0)
1241 #define ASM_OUTPUTS(NODE) TREE_OPERAND ((NODE), 1)
1242 #define ASM_INPUTS(NODE) TREE_OPERAND ((NODE), 2)
1243 #define ASM_CLOBBERS(NODE) TREE_OPERAND ((NODE), 3)
1244 /* Nonzero if we want to create an ASM_INPUT instead of an
1245 ASM_OPERAND with no operands. */
1246 #define ASM_INPUT_P(NODE) (TREE_STATIC (NODE))
1247 #define ASM_VOLATILE_P(NODE) (TREE_PUBLIC (NODE))
1249 /* COND_EXPR accessors. */
1250 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1251 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1252 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1254 /* LABEL_EXPR accessor. This gives access to the label associated with
1255 the given label expression. */
1256 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1258 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1259 accessors for SSA operands. */
1261 /* CATCH_EXPR accessors. */
1262 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1263 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1265 /* EH_FILTER_EXPR accessors. */
1266 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1267 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1268 #define EH_FILTER_MUST_NOT_THROW(NODE) TREE_STATIC (EH_FILTER_EXPR_CHECK (NODE))
1270 /* OBJ_TYPE_REF accessors. */
1271 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1272 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1273 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1275 struct tree_exp GTY(())
1277 struct tree_common common;
1281 tree GTY ((special ("tree_exp"),
1282 desc ("TREE_CODE ((tree) &%0)")))
1286 /* SSA_NAME accessors. */
1288 /* Returns the variable being referenced. Once released, this is the
1289 only field that can be relied upon. */
1290 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1292 /* Returns the statement which defines this reference. Note that
1293 we use the same field when chaining SSA_NAME nodes together on
1294 the SSA_NAME freelist. */
1295 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->common.chain
1297 /* Returns the SSA version number of this SSA name. Note that in
1298 tree SSA, version numbers are not per variable and may be recycled. */
1299 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1301 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1302 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1304 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1305 SSA_NAME_CHECK (NODE)->common.asm_written_flag
1307 /* Nonzero if this SSA_NAME expression is currently on the free list of
1308 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1309 has no meaning for an SSA_NAME. */
1310 #define SSA_NAME_IN_FREE_LIST(NODE) \
1311 SSA_NAME_CHECK (NODE)->common.nothrow_flag
1313 /* If NAME is equivalent to some other SSA_NAME or an invariant, then
1314 return the equivalent SSA_NAME or invariant, else return NULL. */
1315 #define SSA_NAME_EQUIV(NAME) __extension__ \
1316 ({ tree equiv = SSA_NAME_CHECK (NAME)->ssa_name.equiv; \
1317 if (equiv && TREE_CODE (equiv) == SSA_NAME) \
1318 equiv = ssa_name (SSA_NAME_VERSION (equiv)); \
1322 /* Record that NAME (an SSA_NAME) is equivalent to EQUIV. */
1324 #define SET_SSA_NAME_EQUIV(NAME, EQUIV)\
1325 SSA_NAME_CHECK (NAME)->ssa_name.equiv = (EQUIV);
1327 /* Attributes for SSA_NAMEs for pointer-type variables. */
1328 #define SSA_NAME_PTR_INFO(N) \
1329 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1331 /* Get the value of this SSA_NAME, if available. */
1332 #define SSA_NAME_VALUE(N) \
1333 SSA_NAME_CHECK (N)->ssa_name.value_handle
1335 /* Auxiliary pass-specific data. */
1336 #define SSA_NAME_AUX(N) \
1337 SSA_NAME_CHECK (N)->ssa_name.aux
1339 #ifndef _TREE_FLOW_H
1340 struct ptr_info_def;
1343 struct tree_ssa_name GTY(())
1345 struct tree_common common;
1347 /* _DECL wrapped by this SSA name. */
1352 /* SSA version number. */
1353 unsigned int version;
1355 /* Pointer attributes used for alias analysis. */
1356 struct ptr_info_def *ptr_info;
1358 /* Value for SSA name used by GVN. */
1359 tree GTY((skip)) value_handle;
1361 /* Auxiliary information stored with the ssa name. */
1362 PTR GTY((skip)) aux;
1365 /* In a PHI_NODE node. */
1366 #define PHI_RESULT_TREE(NODE) PHI_NODE_CHECK (NODE)->phi.result
1367 #define PHI_ARG_DEF_TREE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).def
1369 /* PHI_NODEs for each basic block are chained together in a single linked
1370 list. The head of the list is linked from the block annotation, and
1371 the link to the next PHI is in PHI_CHAIN. */
1372 #define PHI_CHAIN(NODE) TREE_CHAIN (PHI_NODE_CHECK (NODE))
1374 /* Nonzero if the PHI node was rewritten by a previous pass through the
1376 #define PHI_REWRITTEN(NODE) PHI_NODE_CHECK (NODE)->phi.rewritten
1377 #define PHI_NUM_ARGS(NODE) PHI_NODE_CHECK (NODE)->phi.num_args
1378 #define PHI_ARG_CAPACITY(NODE) PHI_NODE_CHECK (NODE)->phi.capacity
1379 #define PHI_ARG_ELT(NODE, I) PHI_NODE_ELT_CHECK (NODE, I)
1380 #define PHI_ARG_EDGE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).e
1381 #define PHI_ARG_NONZERO(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).nonzero
1382 #define PHI_BB(NODE) PHI_NODE_CHECK (NODE)->phi.bb
1383 #define PHI_DF(NODE) PHI_NODE_CHECK (NODE)->phi.df
1387 struct phi_arg_d GTY(())
1390 struct edge_def * GTY((skip (""))) e;
1394 struct tree_phi_node GTY(())
1396 struct tree_common common;
1401 /* Nonzero if the PHI node was rewritten by a previous pass through the
1405 /* Basic block to that the phi node belongs. */
1406 struct basic_block_def *bb;
1408 /* Dataflow information. */
1409 struct dataflow_d *df;
1411 struct phi_arg_d GTY ((length ("((tree)&%h)->phi.capacity"))) a[1];
1415 struct varray_head_tag;
1417 /* In a BLOCK node. */
1418 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1419 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1420 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1421 /* Note: when changing this, make sure to find the places
1422 that use chainon or nreverse. */
1423 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1424 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1425 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1427 /* Nonzero means that this block is prepared to handle exceptions
1428 listed in the BLOCK_VARS slot. */
1429 #define BLOCK_HANDLER_BLOCK(NODE) \
1430 (BLOCK_CHECK (NODE)->block.handler_block_flag)
1432 /* An index number for this block. These values are not guaranteed to
1433 be unique across functions -- whether or not they are depends on
1434 the debugging output format in use. */
1435 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1437 /* If block reordering splits a lexical block into discontiguous
1438 address ranges, we'll make a copy of the original block.
1440 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1441 In that case, we have one source block that has been replicated
1442 (through inlining or unrolling) into many logical blocks, and that
1443 these logical blocks have different physical variables in them.
1445 In this case, we have one logical block split into several
1446 non-contiguous address ranges. Most debug formats can't actually
1447 represent this idea directly, so we fake it by creating multiple
1448 logical blocks with the same variables in them. However, for those
1449 that do support non-contiguous regions, these allow the original
1450 logical block to be reconstructed, along with the set of address
1453 One of the logical block fragments is arbitrarily chosen to be
1454 the ORIGIN. The other fragments will point to the origin via
1455 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1456 be null. The list of fragments will be chained through
1457 BLOCK_FRAGMENT_CHAIN from the origin. */
1459 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1460 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1462 struct tree_block GTY(())
1464 struct tree_common common;
1466 unsigned handler_block_flag : 1;
1467 unsigned abstract_flag : 1;
1468 unsigned block_num : 30;
1473 tree abstract_origin;
1474 tree fragment_origin;
1475 tree fragment_chain;
1478 /* Define fields and accessors for nodes representing data types. */
1480 /* See tree.def for documentation of the use of these fields.
1481 Look at the documentation of the various ..._TYPE tree codes.
1483 Note that the type.values, type.minval, and type.maxval fields are
1484 overloaded and used for different macros in different kinds of types.
1485 Each macro must check to ensure the tree node is of the proper kind of
1486 type. Note also that some of the front-ends also overload these fields,
1487 so they must be checked as well. */
1489 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
1490 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
1491 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
1492 #define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode)
1493 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
1494 #define TYPE_DOMAIN(NODE) (SET_OR_ARRAY_CHECK (NODE)->type.values)
1495 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
1496 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
1497 #define TYPE_ORIG_SIZE_TYPE(NODE) \
1498 (INTEGER_TYPE_CHECK (NODE)->type.values \
1499 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
1500 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
1501 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
1502 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
1503 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
1504 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
1505 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
1506 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
1507 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
1508 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
1509 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
1510 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
1511 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
1512 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
1513 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
1514 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
1515 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
1516 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
1517 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
1518 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
1519 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
1521 /* For a VECTOR_TYPE node, this describes a different type which is emitted
1522 in the debugging output. We use this to describe a vector as a
1523 structure containing an array. */
1524 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
1526 /* For record and union types, information about this type, as a base type
1528 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1530 /* For non record and union types, used in a language-dependent way. */
1531 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1533 /* The (language-specific) typed-based alias set for this type.
1534 Objects whose TYPE_ALIAS_SETs are different cannot alias each
1535 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
1536 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
1537 type can alias objects of any type. */
1538 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
1540 /* Nonzero iff the typed-based alias set for this type has been
1542 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
1544 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
1546 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
1548 /* The alignment necessary for objects of this type.
1549 The value is an int, measured in bits. */
1550 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
1552 /* 1 if the alignment for this type was requested by "aligned" attribute,
1553 0 if it is the default for this type. */
1554 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
1556 /* The alignment for NODE, in bytes. */
1557 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
1559 /* If your language allows you to declare types, and you want debug info
1560 for them, then you need to generate corresponding TYPE_DECL nodes.
1561 These "stub" TYPE_DECL nodes have no name, and simply point at the
1562 type node. You then set the TYPE_STUB_DECL field of the type node
1563 to point back at the TYPE_DECL node. This allows the debug routines
1564 to know that the two nodes represent the same type, so that we only
1565 get one debug info record for them. */
1566 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
1568 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
1569 has BLKmode only because it lacks the alignment requirement for
1571 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
1573 /* In an INTEGER_TYPE, it means the type represents a size. We use
1574 this both for validity checking and to permit optimizations that
1575 are unsafe for other types. Note that the C `size_t' type should
1576 *not* have this flag set. The `size_t' type is simply a typedef
1577 for an ordinary integer type that happens to be the type of an
1578 expression returned by `sizeof'; `size_t' has no special
1579 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
1580 always actual sizes. */
1581 #define TYPE_IS_SIZETYPE(NODE) \
1582 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1584 /* In a FUNCTION_TYPE, indicates that the function returns with the stack
1585 pointer depressed. */
1586 #define TYPE_RETURNS_STACK_DEPRESSED(NODE) \
1587 (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1589 /* Nonzero in a type considered volatile as a whole. */
1590 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->common.volatile_flag)
1592 /* Means this type is const-qualified. */
1593 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->common.readonly_flag)
1595 /* If nonzero, this type is `restrict'-qualified, in the C sense of
1597 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
1599 /* There is a TYPE_QUAL value for each type qualifier. They can be
1600 combined by bitwise-or to form the complete set of qualifiers for a
1603 #define TYPE_UNQUALIFIED 0x0
1604 #define TYPE_QUAL_CONST 0x1
1605 #define TYPE_QUAL_VOLATILE 0x2
1606 #define TYPE_QUAL_RESTRICT 0x4
1608 /* The set of type qualifiers for this type. */
1609 #define TYPE_QUALS(NODE) \
1610 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
1611 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
1612 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
1614 /* These flags are available for each language front end to use internally. */
1615 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
1616 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
1617 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
1618 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
1619 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
1620 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
1621 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
1623 /* Used to keep track of visited nodes in tree traversals. This is set to
1624 0 by copy_node and make_node. */
1625 #define TREE_VISITED(NODE) ((NODE)->common.visited)
1627 /* If set in an ARRAY_TYPE, indicates a string type (for languages
1628 that distinguish string from array of char).
1629 If set in a SET_TYPE, indicates a bitstring type. */
1630 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
1632 /* If non-NULL, this is an upper bound of the size (in bytes) of an
1633 object of the given ARRAY_TYPE. This allows temporaries to be
1635 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
1636 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
1638 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
1639 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
1640 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
1642 /* Indicates that objects of this type must be initialized by calling a
1643 function when they are created. */
1644 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
1645 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
1647 /* Indicates that objects of this type (a UNION_TYPE), should be passed
1648 the same way that the first union alternative would be passed. */
1649 #define TYPE_TRANSPARENT_UNION(NODE) \
1650 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
1652 /* For an ARRAY_TYPE, indicates that it is not permitted to
1653 take the address of a component of the type. */
1654 #define TYPE_NONALIASED_COMPONENT(NODE) \
1655 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
1657 /* Indicated that objects of this type should be laid out in as
1658 compact a way as possible. */
1659 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
1661 /* Used by type_contains_placeholder_p to avoid recomputation.
1662 Values are: 0 (unknown), 1 (false), 2 (true). Never access
1663 this field directly. */
1664 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
1665 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
1669 struct tree_type GTY(())
1671 struct tree_common common;
1678 unsigned int precision : 9;
1679 ENUM_BITFIELD(machine_mode) mode : 7;
1681 unsigned string_flag : 1;
1682 unsigned no_force_blk_flag : 1;
1683 unsigned needs_constructing_flag : 1;
1684 unsigned transparent_union_flag : 1;
1685 unsigned packed_flag : 1;
1686 unsigned restrict_flag : 1;
1687 unsigned contains_placeholder_bits : 2;
1689 unsigned lang_flag_0 : 1;
1690 unsigned lang_flag_1 : 1;
1691 unsigned lang_flag_2 : 1;
1692 unsigned lang_flag_3 : 1;
1693 unsigned lang_flag_4 : 1;
1694 unsigned lang_flag_5 : 1;
1695 unsigned lang_flag_6 : 1;
1696 unsigned user_align : 1;
1701 union tree_type_symtab {
1702 int GTY ((tag ("0"))) address;
1703 char * GTY ((tag ("1"))) pointer;
1704 struct die_struct * GTY ((tag ("2"))) die;
1705 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
1706 descbits ("2"))) symtab;
1714 HOST_WIDE_INT alias_set;
1715 /* Points to a structure whose details depend on the language in use. */
1716 struct lang_type *lang_specific;
1719 /* Define accessor macros for information about type inheritance
1722 A "basetype" means a particular usage of a data type for inheritance
1723 in another type. Each such basetype usage has its own "binfo"
1724 object to describe it. The binfo object is a TREE_VEC node.
1726 Inheritance is represented by the binfo nodes allocated for a
1727 given type. For example, given types C and D, such that D is
1728 inherited by C, 3 binfo nodes will be allocated: one for describing
1729 the binfo properties of C, similarly one for D, and one for
1730 describing the binfo properties of D as a base type for C.
1731 Thus, given a pointer to class C, one can get a pointer to the binfo
1732 of D acting as a basetype for C by looking at C's binfo's basetypes. */
1734 /* BINFO specific flags. */
1736 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
1737 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->common.static_flag)
1739 /* Flags for language dependent use. */
1740 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
1741 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
1742 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
1743 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
1744 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
1745 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
1746 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
1748 /* The actual data type node being inherited in this basetype. */
1749 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
1751 /* The offset where this basetype appears in its containing type.
1752 BINFO_OFFSET slot holds the offset (in bytes)
1753 from the base of the complete object to the base of the part of the
1754 object that is allocated on behalf of this `type'.
1755 This is always 0 except when there is multiple inheritance. */
1757 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
1758 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
1760 /* The virtual function table belonging to this basetype. Virtual
1761 function tables provide a mechanism for run-time method dispatching.
1762 The entries of a virtual function table are language-dependent. */
1764 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
1766 /* The virtual functions in the virtual function table. This is
1767 a TREE_LIST that is used as an initial approximation for building
1768 a virtual function table for this basetype. */
1769 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
1771 /* A vector of binfos for the direct basetypes inherited by this
1774 If this basetype describes type D as inherited in C, and if the
1775 basetypes of D are E and F, then this vector contains binfos for
1776 inheritance of E and F by C. */
1777 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
1779 /* The number of basetypes for NODE. */
1780 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
1782 /* Accessor macro to get to the Nth base binfo of this binfo. */
1783 #define BINFO_BASE_BINFO(NODE,N) \
1784 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
1785 #define BINFO_BASE_ITERATE(NODE,N,B) \
1786 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
1787 #define BINFO_BASE_APPEND(NODE,T) \
1788 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
1790 /* For a BINFO record describing a virtual base class, i.e., one where
1791 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
1792 base. The actual contents are language-dependent. In the C++
1793 front-end this field is an INTEGER_CST giving an offset into the
1794 vtable where the offset to the virtual base can be found. */
1795 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
1797 /* Indicates the accesses this binfo has to its bases. The values are
1798 access_public_node, access_protected_node or access_private_node.
1799 If this array is not present, public access is implied. */
1800 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
1802 #define BINFO_BASE_ACCESS(NODE,N) \
1803 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
1804 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
1805 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
1807 /* The index in the VTT where this subobject's sub-VTT can be found.
1808 NULL_TREE if there is no sub-VTT. */
1809 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
1811 /* The index in the VTT where the vptr for this subobject can be
1812 found. NULL_TREE if there is no secondary vptr in the VTT. */
1813 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
1815 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
1816 inheriting this base for non-virtual bases. For virtual bases it
1817 points either to the binfo for which this is a primary binfo, or to
1818 the binfo of the most derived type. */
1819 #define BINFO_INHERITANCE_CHAIN(NODE) \
1820 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
1822 struct tree_binfo GTY (())
1824 struct tree_common common;
1830 VEC(tree) *base_accesses;
1836 VEC(tree) base_binfos;
1840 /* Define fields and accessors for nodes representing declared names. */
1842 /* Nonzero if DECL represents a variable for the SSA passes. */
1843 #define SSA_VAR_P(DECL) \
1844 (TREE_CODE (DECL) == VAR_DECL \
1845 || TREE_CODE (DECL) == PARM_DECL \
1846 || TREE_CODE (DECL) == RESULT_DECL \
1847 || (TREE_CODE (DECL) == SSA_NAME \
1848 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
1849 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
1850 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
1852 /* This is the name of the object as written by the user.
1853 It is an IDENTIFIER_NODE. */
1854 #define DECL_NAME(NODE) (DECL_CHECK (NODE)->decl.name)
1856 /* The name of the object as the assembler will see it (but before any
1857 translations made by ASM_OUTPUT_LABELREF). Often this is the same
1858 as DECL_NAME. It is an IDENTIFIER_NODE. */
1859 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
1861 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
1862 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
1864 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
1865 (DECL_CHECK (NODE)->decl.assembler_name != NULL_TREE)
1867 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
1868 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
1869 (DECL_CHECK (NODE)->decl.assembler_name = (NAME))
1871 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
1872 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
1873 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
1874 semantics of using this macro, are different than saying:
1876 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
1878 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
1880 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
1881 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
1882 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
1883 DECL_ASSEMBLER_NAME (DECL1)) \
1886 /* Records the section name in a section attribute. Used to pass
1887 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
1888 #define DECL_SECTION_NAME(NODE) (DECL_CHECK (NODE)->decl.section_name)
1890 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
1891 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
1892 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
1893 points to either the FUNCTION_DECL for the containing function,
1894 the RECORD_TYPE or UNION_TYPE for the containing type, or
1895 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
1897 #define DECL_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context)
1898 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.context)
1899 /* In a DECL this is the field where attributes are stored. */
1900 #define DECL_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.attributes)
1901 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
1902 byte containing the bit closest to the beginning of the structure. */
1903 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.arguments)
1904 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
1905 field from DECL_FIELD_OFFSET. */
1906 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.u2.t)
1907 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
1908 if so, the type that was originally specified for it.
1909 TREE_TYPE may have been modified (in finish_struct). */
1910 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->decl.result)
1911 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
1912 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
1914 #define DECL_ARGUMENTS(NODE) (DECL_CHECK (NODE)->decl.arguments)
1915 /* This field is used to reference anything in decl.result and is meant only
1916 for use by the garbage collector. */
1917 #define DECL_RESULT_FLD(NODE) (DECL_CHECK (NODE)->decl.result)
1918 /* In FUNCTION_DECL, holds the decl for the return value. */
1919 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.result)
1920 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
1921 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl.result)
1922 /* In PARM_DECL, holds the type as written (perhaps a function or array). */
1923 #define DECL_ARG_TYPE_AS_WRITTEN(NODE) (PARM_DECL_CHECK (NODE)->decl.result)
1924 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
1925 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
1926 For a VAR_DECL, holds the initial value.
1927 For a PARM_DECL, not used--default
1928 values for parameters are encoded in the type of the function,
1929 not in the PARM_DECL slot.
1931 ??? Need to figure out some way to check this isn't a PARM_DECL. */
1932 #define DECL_INITIAL(NODE) (DECL_CHECK (NODE)->decl.initial)
1933 /* For a PARM_DECL, records the data type used to pass the argument,
1934 which may be different from the type seen in the program. */
1935 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl.initial)
1936 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
1937 if nonzero, indicates that the field occupies the type. */
1938 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->decl.initial)
1939 /* These two fields describe where in the source code the declaration
1940 was. If the declaration appears in several places (as for a C
1941 function that is declared first and then defined later), this
1942 information should refer to the definition. */
1943 #define DECL_SOURCE_LOCATION(NODE) (DECL_CHECK (NODE)->decl.locus)
1944 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
1945 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
1946 #ifdef USE_MAPPED_LOCATION
1947 #define DECL_IS_BUILTIN(DECL) \
1948 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
1950 #define DECL_IS_BUILTIN(DECL) (DECL_SOURCE_LINE(DECL) == 0)
1952 /* Holds the size of the datum, in bits, as a tree expression.
1953 Need not be constant. */
1954 #define DECL_SIZE(NODE) (DECL_CHECK (NODE)->decl.size)
1955 /* Likewise for the size in bytes. */
1956 #define DECL_SIZE_UNIT(NODE) (DECL_CHECK (NODE)->decl.size_unit)
1957 /* Holds the alignment required for the datum, in bits. */
1958 #define DECL_ALIGN(NODE) (DECL_CHECK (NODE)->decl.u1.a.align)
1959 /* The alignment of NODE, in bytes. */
1960 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
1961 /* For FIELD_DECLs, off_align holds the number of low-order bits of
1962 DECL_FIELD_OFFSET which are known to be always zero.
1963 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
1965 #define DECL_OFFSET_ALIGN(NODE) \
1966 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align)
1967 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
1968 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
1969 (FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align = exact_log2 ((X) & -(X)))
1970 /* 1 if the alignment for this type was requested by "aligned" attribute,
1971 0 if it is the default for this type. */
1972 #define DECL_USER_ALIGN(NODE) (DECL_CHECK (NODE)->decl.user_align)
1973 /* Holds the machine mode corresponding to the declaration of a variable or
1974 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
1976 #define DECL_MODE(NODE) (DECL_CHECK (NODE)->decl.mode)
1977 /* Holds the RTL expression for the value of a variable or function.
1978 This value can be evaluated lazily for functions, variables with
1979 static storage duration, and labels. */
1980 #define DECL_RTL(NODE) \
1981 (DECL_CHECK (NODE)->decl.rtl \
1982 ? (NODE)->decl.rtl \
1983 : (make_decl_rtl (NODE), (NODE)->decl.rtl))
1984 /* Set the DECL_RTL for NODE to RTL. */
1985 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
1986 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
1987 #define DECL_RTL_SET_P(NODE) (DECL_CHECK (NODE)->decl.rtl != NULL)
1988 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
1989 NODE1, it will not be set for NODE2; this is a lazy copy. */
1990 #define COPY_DECL_RTL(NODE1, NODE2) \
1991 (DECL_CHECK (NODE2)->decl.rtl = DECL_CHECK (NODE1)->decl.rtl)
1992 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
1993 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
1995 /* For PARM_DECL, holds an RTL for the stack slot or register
1996 where the data was actually passed. */
1997 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->decl.u2.r)
1999 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
2000 that describes the status of this function. */
2001 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u2.f)
2003 /* For FUNCTION_DECL, if it is built-in,
2004 this identifies which built-in operation it is. */
2005 #define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u1.f)
2007 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
2008 Before the struct containing the FUNCTION_DECL is laid out,
2009 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
2010 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
2011 function. When the class is laid out, this pointer is changed
2012 to an INTEGER_CST node which is suitable for use as an index
2013 into the virtual function table. */
2014 #define DECL_VINDEX(NODE) (DECL_CHECK (NODE)->decl.vindex)
2016 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2017 which this FIELD_DECL is defined. This information is needed when
2018 writing debugging information about vfield and vbase decls for C++. */
2019 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.vindex)
2021 /* Every ..._DECL node gets a unique number. */
2022 #define DECL_UID(NODE) (DECL_CHECK (NODE)->decl.uid)
2024 /* For any sort of a ..._DECL node, this points to the original (abstract)
2025 decl node which this decl is an instance of, or else it is NULL indicating
2026 that this decl is not an instance of some other decl. For example,
2027 in a nested declaration of an inline function, this points back to the
2029 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_CHECK (NODE)->decl.abstract_origin)
2031 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2032 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2033 #define DECL_ORIGIN(NODE) \
2034 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2036 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2037 inline instance of some original (abstract) decl from an inline function;
2038 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2039 nodes can also have their abstract origin set to themselves. */
2040 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2041 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2043 /* Nonzero if a _DECL means that the name of this decl should be ignored
2044 for symbolic debug purposes. */
2045 #define DECL_IGNORED_P(NODE) (DECL_CHECK (NODE)->decl.ignored_flag)
2047 /* Nonzero for a given ..._DECL node means that this node represents an
2048 "abstract instance" of the given declaration (e.g. in the original
2049 declaration of an inline function). When generating symbolic debugging
2050 information, we mustn't try to generate any address information for nodes
2051 marked as "abstract instances" because we don't actually generate
2052 any code or allocate any data space for such instances. */
2053 #define DECL_ABSTRACT(NODE) (DECL_CHECK (NODE)->decl.abstract_flag)
2055 /* Nonzero if a _DECL means that no warnings should be generated just
2056 because this decl is unused. */
2057 #define DECL_IN_SYSTEM_HEADER(NODE) \
2058 (DECL_CHECK (NODE)->decl.in_system_header_flag)
2060 /* Nonzero for a given ..._DECL node means that this node should be
2061 put in .common, if possible. If a DECL_INITIAL is given, and it
2062 is not error_mark_node, then the decl cannot be put in .common. */
2063 #define DECL_COMMON(NODE) (DECL_CHECK (NODE)->decl.common_flag)
2065 /* Language-specific decl information. */
2066 #define DECL_LANG_SPECIFIC(NODE) (DECL_CHECK (NODE)->decl.lang_specific)
2068 /* In a VAR_DECL or FUNCTION_DECL,
2069 nonzero means external reference:
2070 do not allocate storage, and refer to a definition elsewhere. */
2071 #define DECL_EXTERNAL(NODE) (DECL_CHECK (NODE)->decl.external_flag)
2073 /* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
2075 #define DEFAULT_INIT_PRIORITY 65535
2076 #define MAX_INIT_PRIORITY 65535
2077 #define MAX_RESERVED_INIT_PRIORITY 100
2080 nonzero means the detail info about this type is not dumped into stabs.
2081 Instead it will generate cross reference ('x') of names.
2082 This uses the same flag as DECL_EXTERNAL. */
2083 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
2084 (TYPE_DECL_CHECK (NODE)->decl.external_flag)
2086 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2087 #define DECL_REGISTER(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag)
2089 /* In LABEL_DECL nodes, nonzero means that an error message about
2090 jumping into such a binding contour has been printed for this label. */
2091 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl.regdecl_flag)
2093 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2094 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl.regdecl_flag)
2096 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
2097 static chain is not needed. */
2098 #define DECL_NO_STATIC_CHAIN(NODE) \
2099 (FUNCTION_DECL_CHECK (NODE)->decl.regdecl_flag)
2101 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2102 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2104 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2106 Also set in some languages for variables, etc., outside the normal
2107 lexical scope, such as class instance variables. */
2108 #define DECL_NONLOCAL(NODE) (DECL_CHECK (NODE)->decl.nonlocal_flag)
2110 /* Nonzero in a FUNCTION_DECL means this function can be substituted
2111 where it is called. */
2112 #define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inline_flag)
2114 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
2115 such as via the `inline' keyword in C/C++. This flag controls the linkage
2116 semantics of 'inline'; whether or not the function is inlined is
2117 controlled by DECL_INLINE. */
2118 #define DECL_DECLARED_INLINE_P(NODE) \
2119 (FUNCTION_DECL_CHECK (NODE)->decl.declared_inline_flag)
2121 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2122 this variable in a BIND_EXPR. */
2123 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2124 (DECL_CHECK (NODE)->decl.seen_in_bind_expr)
2126 /* In a VAR_DECL, nonzero if the decl is a register variable with
2127 an explicit asm specification. */
2128 #define DECL_HARD_REGISTER(NODE) (DECL_CHECK (NODE)->decl.inline_flag)
2130 /* Value of the decls's visibility attribute */
2131 #define DECL_VISIBILITY(NODE) (DECL_CHECK (NODE)->decl.visibility)
2133 /* Nonzero means that the decl had its visibility specified rather than
2135 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_CHECK (NODE)->decl.visibility_specified)
2137 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
2138 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.uninlinable)
2140 /* In a VAR_DECL, nonzero if the data should be allocated from
2141 thread-local storage. */
2142 #define DECL_THREAD_LOCAL(NODE) (VAR_DECL_CHECK (NODE)->decl.thread_local_flag)
2144 /* In a FUNCTION_DECL, the saved representation of the body of the
2146 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.saved_tree)
2148 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2149 if transformations have made this more complicated than evaluating the
2150 decl itself. This should only be used for debugging; once this field has
2151 been set, the decl itself may not legitimately appear in the function. */
2152 #define DECL_VALUE_EXPR(NODE) \
2153 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl.saved_tree)
2155 /* List of FUNCTION_DECLs inlined into this function's body. */
2156 #define DECL_INLINED_FNS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inlined_fns)
2158 /* Nonzero in a FUNCTION_DECL means this function should be treated
2159 as if it were a malloc, meaning it returns a pointer that is
2161 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.malloc_flag)
2163 /* Nonzero in a FUNCTION_DECL means this function should be treated
2164 as "pure" function (like const function, but may read global memory). */
2165 #define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.pure_flag)
2167 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2169 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl.bit_field_flag)
2171 /* Unused in FUNCTION_DECL. */
2173 /* In a VAR_DECL that's static,
2174 nonzero if the space is in the text section. */
2175 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl.bit_field_flag)
2177 /* In a FUNCTION_DECL, nonzero means a built in function. */
2178 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
2180 /* For a builtin function, identify which part of the compiler defined it. */
2181 #define DECL_BUILT_IN_CLASS(NODE) \
2182 (FUNCTION_DECL_CHECK (NODE)->decl.built_in_class)
2184 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2185 Used in FIELD_DECLs for vtable pointers.
2186 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2187 #define DECL_VIRTUAL_P(NODE) (DECL_CHECK (NODE)->decl.virtual_flag)
2189 /* Used to indicate that the linkage status of this DECL is not yet known,
2190 so it should not be output now. */
2191 #define DECL_DEFER_OUTPUT(NODE) (DECL_CHECK (NODE)->decl.defer_output)
2193 /* Used in PARM_DECLs whose type are unions to indicate that the
2194 argument should be passed in the same way that the first union
2195 alternative would be passed. */
2196 #define DECL_TRANSPARENT_UNION(NODE) \
2197 (PARM_DECL_CHECK (NODE)->decl.transparent_union)
2199 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
2200 at the beginning or end of execution. */
2201 #define DECL_STATIC_CONSTRUCTOR(NODE) \
2202 (FUNCTION_DECL_CHECK (NODE)->decl.static_ctor_flag)
2204 #define DECL_STATIC_DESTRUCTOR(NODE) \
2205 (FUNCTION_DECL_CHECK (NODE)->decl.static_dtor_flag)
2207 /* Used to indicate that this DECL represents a compiler-generated entity. */
2208 #define DECL_ARTIFICIAL(NODE) (DECL_CHECK (NODE)->decl.artificial_flag)
2210 /* Used to indicate that this DECL has weak linkage. */
2211 #define DECL_WEAK(NODE) (DECL_CHECK (NODE)->decl.weak_flag)
2213 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2214 multiple translation units should be merged. */
2215 #define DECL_ONE_ONLY(NODE) (DECL_CHECK (NODE)->decl.transparent_union)
2217 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2218 not be put out unless it is needed in this translation unit.
2219 Entities like this are shared across translation units (like weak
2220 entities), but are guaranteed to be generated by any translation
2221 unit that needs them, and therefore need not be put out anywhere
2222 where they are not needed. DECL_COMDAT is just a hint to the
2223 back-end; it is up to front-ends which set this flag to ensure
2224 that there will never be any harm, other than bloat, in putting out
2225 something which is DECL_COMDAT. */
2226 #define DECL_COMDAT(NODE) (DECL_CHECK (NODE)->decl.comdat_flag)
2228 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
2229 be instrumented with calls to support routines. */
2230 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
2231 (FUNCTION_DECL_CHECK (NODE)->decl.no_instrument_function_entry_exit)
2233 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
2234 disabled in this function. */
2235 #define DECL_NO_LIMIT_STACK(NODE) \
2236 (FUNCTION_DECL_CHECK (NODE)->decl.no_limit_stack)
2238 /* Additional flags for language-specific uses. */
2239 #define DECL_LANG_FLAG_0(NODE) (DECL_CHECK (NODE)->decl.lang_flag_0)
2240 #define DECL_LANG_FLAG_1(NODE) (DECL_CHECK (NODE)->decl.lang_flag_1)
2241 #define DECL_LANG_FLAG_2(NODE) (DECL_CHECK (NODE)->decl.lang_flag_2)
2242 #define DECL_LANG_FLAG_3(NODE) (DECL_CHECK (NODE)->decl.lang_flag_3)
2243 #define DECL_LANG_FLAG_4(NODE) (DECL_CHECK (NODE)->decl.lang_flag_4)
2244 #define DECL_LANG_FLAG_5(NODE) (DECL_CHECK (NODE)->decl.lang_flag_5)
2245 #define DECL_LANG_FLAG_6(NODE) (DECL_CHECK (NODE)->decl.lang_flag_6)
2246 #define DECL_LANG_FLAG_7(NODE) (DECL_CHECK (NODE)->decl.lang_flag_7)
2248 /* Used to indicate that the pointer to this DECL cannot be treated as
2249 an address constant. */
2250 #define DECL_NON_ADDR_CONST_P(NODE) (DECL_CHECK (NODE)->decl.non_addr_const_p)
2252 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2254 #define DECL_NONADDRESSABLE_P(NODE) \
2255 (FIELD_DECL_CHECK (NODE)->decl.non_addressable)
2257 /* Used to indicate an alias set for the memory pointed to by this
2258 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2259 pointer (or reference) type. */
2260 #define DECL_POINTER_ALIAS_SET(NODE) \
2261 (DECL_CHECK (NODE)->decl.pointer_alias_set)
2263 /* Used to store the alias_var for a DECL node. */
2264 #define DECL_PTA_ALIASVAR(NODE) \
2265 (DECL_CHECK (NODE)->decl.alias_var)
2267 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2268 dense, unique within any one function, and may be used to index arrays.
2269 If the value is -1, then no UID has been assigned. */
2270 #define LABEL_DECL_UID(NODE) \
2271 (LABEL_DECL_CHECK (NODE)->decl.pointer_alias_set)
2273 /* Nonzero if an alias set has been assigned to this declaration. */
2274 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2275 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2277 /* Nonzero for a decl which is at file scope. */
2278 #define DECL_FILE_SCOPE_P(EXP) \
2279 (! DECL_CONTEXT (EXP) \
2280 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2282 /* Nonzero for a decl that cgraph has decided should be inlined into
2283 at least one call site. It is not meaningful to look at this
2284 directly; always use cgraph_function_possibly_inlined_p. */
2285 #define DECL_POSSIBLY_INLINED(DECL) \
2286 FUNCTION_DECL_CHECK (DECL)->decl.possibly_inlined
2288 /* Nonzero for a decl that is decorated using attribute used.
2289 This indicates compiler tools that this decl needs to be preserved. */
2290 #define DECL_PRESERVE_P(DECL) \
2291 DECL_CHECK (DECL)->decl.preserve_flag
2293 /* Internal to the gimplifier. Indicates that the value is a formal
2294 temporary controlled by the gimplifier. */
2295 #define DECL_GIMPLE_FORMAL_TEMP_P(DECL) \
2296 DECL_CHECK (DECL)->decl.gimple_formal_temp
2298 /* Enumerate visibility settings. */
2299 #ifndef SYMBOL_VISIBILITY_DEFINED
2300 #define SYMBOL_VISIBILITY_DEFINED
2301 enum symbol_visibility
2304 VISIBILITY_INTERNAL,
2306 VISIBILITY_PROTECTED
2311 union alias_var_def;
2312 struct tree_decl GTY(())
2314 struct tree_common common;
2318 ENUM_BITFIELD(machine_mode) mode : 8;
2320 unsigned external_flag : 1;
2321 unsigned nonlocal_flag : 1;
2322 unsigned regdecl_flag : 1;
2323 unsigned inline_flag : 1;
2324 unsigned bit_field_flag : 1;
2325 unsigned virtual_flag : 1;
2326 unsigned ignored_flag : 1;
2327 unsigned abstract_flag : 1;
2329 unsigned in_system_header_flag : 1;
2330 unsigned common_flag : 1;
2331 unsigned defer_output : 1;
2332 unsigned transparent_union : 1;
2333 unsigned static_ctor_flag : 1;
2334 unsigned static_dtor_flag : 1;
2335 unsigned artificial_flag : 1;
2336 unsigned weak_flag : 1;
2338 unsigned non_addr_const_p : 1;
2339 unsigned no_instrument_function_entry_exit : 1;
2340 unsigned comdat_flag : 1;
2341 unsigned malloc_flag : 1;
2342 unsigned no_limit_stack : 1;
2343 ENUM_BITFIELD(built_in_class) built_in_class : 2;
2344 unsigned pure_flag : 1;
2346 unsigned non_addressable : 1;
2347 unsigned user_align : 1;
2348 unsigned uninlinable : 1;
2349 unsigned thread_local_flag : 1;
2350 unsigned declared_inline_flag : 1;
2351 unsigned seen_in_bind_expr : 1;
2352 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2353 unsigned visibility_specified : 1;
2355 unsigned lang_flag_0 : 1;
2356 unsigned lang_flag_1 : 1;
2357 unsigned lang_flag_2 : 1;
2358 unsigned lang_flag_3 : 1;
2359 unsigned lang_flag_4 : 1;
2360 unsigned lang_flag_5 : 1;
2361 unsigned lang_flag_6 : 1;
2362 unsigned lang_flag_7 : 1;
2364 unsigned possibly_inlined : 1;
2365 unsigned preserve_flag: 1;
2366 unsigned gimple_formal_temp : 1;
2367 /* 13 unused bits. */
2369 union tree_decl_u1 {
2370 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
2371 DECL_FUNCTION_CODE. */
2372 enum built_in_function f;
2373 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this
2374 is used by language-dependent code. */
2376 /* DECL_ALIGN and DECL_OFFSET_ALIGN. (These are not used for
2378 struct tree_decl_u1_a {
2379 unsigned int align : 24;
2380 unsigned int off_align : 8;
2387 tree arguments; /* Also used for DECL_FIELD_OFFSET */
2388 tree result; /* Also used for DECL_BIT_FIELD_TYPE */
2389 tree initial; /* Also used for DECL_QUALIFIER */
2390 tree abstract_origin;
2391 tree assembler_name;
2394 rtx rtl; /* RTL representation for object. */
2396 /* In FUNCTION_DECL, if it is inline, holds the saved insn chain.
2397 In FIELD_DECL, is DECL_FIELD_BIT_OFFSET.
2398 In PARM_DECL, holds an RTL for the stack slot
2399 of register where the data was actually passed.
2400 Used by Chill and Java in LABEL_DECL and by C++ and Java in VAR_DECL. */
2401 union tree_decl_u2 {
2402 struct function * GTY ((tag ("FUNCTION_DECL"))) f;
2403 rtx GTY ((tag ("PARM_DECL"))) r;
2404 tree GTY ((tag ("FIELD_DECL"))) t;
2405 int GTY ((tag ("VAR_DECL"))) i;
2406 } GTY ((desc ("TREE_CODE((tree) &(%0))"))) u2;
2408 /* In a FUNCTION_DECL, this is DECL_SAVED_TREE.
2409 In a VAR_DECL or PARM_DECL, this is DECL_VALUE_EXPR. */
2412 /* In a FUNCTION_DECL, these are function data which is to be kept
2413 as long as FUNCTION_DECL is kept. */
2417 HOST_WIDE_INT pointer_alias_set;
2418 union alias_var_def *GTY ((skip(""))) alias_var;
2419 /* Points to a structure whose details depend on the language in use. */
2420 struct lang_decl *lang_specific;
2424 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
2425 To reduce overhead, the nodes containing the statements are not trees.
2426 This avoids the overhead of tree_common on all linked list elements.
2428 Use the interface in tree-iterator.h to access this node. */
2430 #define STATEMENT_LIST_HEAD(NODE) \
2431 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
2432 #define STATEMENT_LIST_TAIL(NODE) \
2433 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
2435 struct tree_statement_list_node
2436 GTY ((chain_next ("%h.next"), chain_prev ("%h.prev")))
2438 struct tree_statement_list_node *prev;
2439 struct tree_statement_list_node *next;
2443 struct tree_statement_list
2446 struct tree_common common;
2447 struct tree_statement_list_node *head;
2448 struct tree_statement_list_node *tail;
2451 #define VALUE_HANDLE_ID(NODE) \
2452 (VALUE_HANDLE_CHECK (NODE)->value_handle.id)
2454 #define VALUE_HANDLE_EXPR_SET(NODE) \
2455 (VALUE_HANDLE_CHECK (NODE)->value_handle.expr_set)
2457 /* Defined and used in tree-ssa-pre.c. */
2460 struct tree_value_handle GTY(())
2462 struct tree_common common;
2464 /* The set of expressions represented by this handle. */
2465 struct value_set * GTY ((skip)) expr_set;
2467 /* Unique ID for this value handle. IDs are handed out in a
2468 conveniently dense form starting at 0, so that we can make
2469 bitmaps of value handles. */
2473 enum tree_node_structure_enum {
2495 /* Define the overall contents of a tree node.
2496 It may be any of the structures declared above
2497 for various types of node. */
2499 union tree_node GTY ((ptr_alias (union lang_tree_node),
2500 desc ("tree_node_structure (&%h)")))
2502 struct tree_common GTY ((tag ("TS_COMMON"))) common;
2503 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
2504 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
2505 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
2506 struct tree_string GTY ((tag ("TS_STRING"))) string;
2507 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
2508 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
2509 struct tree_decl GTY ((tag ("TS_DECL"))) decl;
2510 struct tree_type GTY ((tag ("TS_TYPE"))) type;
2511 struct tree_list GTY ((tag ("TS_LIST"))) list;
2512 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
2513 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
2514 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
2515 struct tree_phi_node GTY ((tag ("TS_PHI_NODE"))) phi;
2516 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
2517 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
2518 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
2519 struct tree_value_handle GTY ((tag ("TS_VALUE_HANDLE"))) value_handle;
2522 /* Standard named or nameless data types of the C compiler. */
2541 TI_INTEGER_MINUS_ONE,
2558 TI_COMPLEX_INTEGER_TYPE,
2559 TI_COMPLEX_FLOAT_TYPE,
2560 TI_COMPLEX_DOUBLE_TYPE,
2561 TI_COMPLEX_LONG_DOUBLE_TYPE,
2565 TI_LONG_DOUBLE_TYPE,
2569 TI_LONG_DOUBLE_PTR_TYPE,
2570 TI_INTEGER_PTR_TYPE,
2589 extern GTY(()) tree global_trees[TI_MAX];
2591 #define error_mark_node global_trees[TI_ERROR_MARK]
2593 #define intQI_type_node global_trees[TI_INTQI_TYPE]
2594 #define intHI_type_node global_trees[TI_INTHI_TYPE]
2595 #define intSI_type_node global_trees[TI_INTSI_TYPE]
2596 #define intDI_type_node global_trees[TI_INTDI_TYPE]
2597 #define intTI_type_node global_trees[TI_INTTI_TYPE]
2599 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
2600 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
2601 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
2602 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
2603 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
2605 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
2606 #define integer_one_node global_trees[TI_INTEGER_ONE]
2607 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
2608 #define size_zero_node global_trees[TI_SIZE_ZERO]
2609 #define size_one_node global_trees[TI_SIZE_ONE]
2610 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
2611 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
2612 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
2614 /* Base access nodes. */
2615 #define access_public_node global_trees[TI_PUBLIC]
2616 #define access_protected_node global_trees[TI_PROTECTED]
2617 #define access_private_node global_trees[TI_PRIVATE]
2619 #define null_pointer_node global_trees[TI_NULL_POINTER]
2621 #define float_type_node global_trees[TI_FLOAT_TYPE]
2622 #define double_type_node global_trees[TI_DOUBLE_TYPE]
2623 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
2625 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
2626 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
2627 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
2628 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
2630 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
2631 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
2632 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
2633 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
2635 #define void_type_node global_trees[TI_VOID_TYPE]
2636 /* The C type `void *'. */
2637 #define ptr_type_node global_trees[TI_PTR_TYPE]
2638 /* The C type `const void *'. */
2639 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
2640 /* The C type `size_t'. */
2641 #define size_type_node global_trees[TI_SIZE_TYPE]
2642 #define pid_type_node global_trees[TI_PID_TYPE]
2643 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
2644 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
2645 /* The C type `FILE *'. */
2646 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
2648 #define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
2649 #define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
2650 #define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
2652 /* The node that should be placed at the end of a parameter list to
2653 indicate that the function does not take a variable number of
2654 arguments. The TREE_VALUE will be void_type_node and there will be
2655 no TREE_CHAIN. Language-independent code should not assume
2656 anything else about this node. */
2657 #define void_list_node global_trees[TI_VOID_LIST_NODE]
2659 #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
2660 #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
2662 /* An enumeration of the standard C integer types. These must be
2663 ordered so that shorter types appear before longer ones, and so
2664 that signed types appear before unsigned ones, for the correct
2665 functioning of interpret_integer() in c-lex.c. */
2666 enum integer_type_kind
2678 itk_unsigned_long_long,
2682 typedef enum integer_type_kind integer_type_kind;
2684 /* The standard C integer types. Use integer_type_kind to index into
2686 extern GTY(()) tree integer_types[itk_none];
2688 #define char_type_node integer_types[itk_char]
2689 #define signed_char_type_node integer_types[itk_signed_char]
2690 #define unsigned_char_type_node integer_types[itk_unsigned_char]
2691 #define short_integer_type_node integer_types[itk_short]
2692 #define short_unsigned_type_node integer_types[itk_unsigned_short]
2693 #define integer_type_node integer_types[itk_int]
2694 #define unsigned_type_node integer_types[itk_unsigned_int]
2695 #define long_integer_type_node integer_types[itk_long]
2696 #define long_unsigned_type_node integer_types[itk_unsigned_long]
2697 #define long_long_integer_type_node integer_types[itk_long_long]
2698 #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
2700 /* Set to the default thread-local storage (tls) model to use. */
2702 extern enum tls_model flag_tls_default;
2705 /* A pointer-to-function member type looks like:
2712 If __pfn is NULL, it is a NULL pointer-to-member-function.
2714 (Because the vtable is always the first thing in the object, we
2715 don't need its offset.) If the function is virtual, then PFN is
2716 one plus twice the index into the vtable; otherwise, it is just a
2717 pointer to the function.
2719 Unfortunately, using the lowest bit of PFN doesn't work in
2720 architectures that don't impose alignment requirements on function
2721 addresses, or that use the lowest bit to tell one ISA from another,
2722 for example. For such architectures, we use the lowest bit of
2723 DELTA instead of the lowest bit of the PFN, and DELTA will be
2726 enum ptrmemfunc_vbit_where_t
2728 ptrmemfunc_vbit_in_pfn,
2729 ptrmemfunc_vbit_in_delta
2732 #define NULL_TREE (tree) NULL
2734 extern GTY(()) tree frame_base_decl;
2735 extern tree decl_assembler_name (tree);
2737 /* Compute the number of bytes occupied by 'node'. This routine only
2738 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
2740 extern size_t tree_size (tree);
2742 /* Compute the number of bytes occupied by a tree with code CODE. This
2743 function cannot be used for TREE_VEC or PHI_NODE codes, which are of
2745 extern size_t tree_code_size (enum tree_code);
2747 /* Lowest level primitive for allocating a node.
2748 The TREE_CODE is the only argument. Contents are initialized
2749 to zero except for a few of the common fields. */
2751 extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
2752 #define make_node(t) make_node_stat (t MEM_STAT_INFO)
2754 /* Make a copy of a node, with all the same contents. */
2756 extern tree copy_node_stat (tree MEM_STAT_DECL);
2757 #define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
2759 /* Make a copy of a chain of TREE_LIST nodes. */
2761 extern tree copy_list (tree);
2764 extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
2765 #define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
2767 /* Make a TREE_VEC. */
2769 extern tree make_tree_vec_stat (int MEM_STAT_DECL);
2770 #define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
2772 /* Tree nodes for SSA analysis. */
2774 extern tree make_phi_node (tree, int);
2775 extern void init_phinodes (void);
2776 extern void fini_phinodes (void);
2777 extern void release_phi_node (tree);
2778 #ifdef GATHER_STATISTICS
2779 extern void phinodes_print_statistics (void);
2782 extern void init_ssanames (void);
2783 extern void fini_ssanames (void);
2784 extern tree make_ssa_name (tree, tree);
2785 extern tree duplicate_ssa_name (tree, tree);
2786 extern void release_ssa_name (tree);
2787 extern void release_defs (tree);
2788 extern void replace_ssa_name_symbol (tree, tree);
2790 #ifdef GATHER_STATISTICS
2791 extern void ssanames_print_statistics (void);
2794 extern void mark_for_rewrite (tree);
2795 extern void unmark_all_for_rewrite (void);
2796 extern bool marked_for_rewrite_p (tree);
2797 extern bool any_marked_for_rewrite_p (void);
2798 extern struct bitmap_head_def *marked_ssa_names (void);
2801 /* Return the (unique) IDENTIFIER_NODE node for a given name.
2802 The name is supplied as a char *. */
2804 extern tree get_identifier (const char *);
2806 #if GCC_VERSION >= 3000
2807 #define get_identifier(str) \
2808 (__builtin_constant_p (str) \
2809 ? get_identifier_with_length ((str), strlen (str)) \
2810 : get_identifier (str))
2814 /* Identical to get_identifier, except that the length is assumed
2817 extern tree get_identifier_with_length (const char *, size_t);
2819 /* If an identifier with the name TEXT (a null-terminated string) has
2820 previously been referred to, return that node; otherwise return
2823 extern tree maybe_get_identifier (const char *);
2825 /* Construct various types of nodes. */
2827 extern tree build (enum tree_code, tree, ...);
2828 extern tree build_nt (enum tree_code, ...);
2830 #if GCC_VERSION >= 3000 || __STDC_VERSION__ >= 199901L
2831 /* Use preprocessor trickery to map "build" to "buildN" where N is the
2832 expected number of arguments. This is used for both efficiency (no
2833 varargs), and checking (verifying number of passed arguments). */
2834 #define build(code, ...) \
2835 _buildN1(build, _buildC1(__VA_ARGS__))(code, __VA_ARGS__)
2836 #define _buildN1(BASE, X) _buildN2(BASE, X)
2837 #define _buildN2(BASE, X) BASE##X
2838 #define _buildC1(...) _buildC2(__VA_ARGS__,9,8,7,6,5,4,3,2,1,0,0)
2839 #define _buildC2(x,a1,a2,a3,a4,a5,a6,a7,a8,a9,c,...) c
2842 extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
2843 #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
2844 extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
2845 #define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
2846 extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
2847 #define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
2848 extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
2849 #define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
2850 extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
2851 tree MEM_STAT_DECL);
2852 #define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
2854 extern tree build_int_cst (tree, HOST_WIDE_INT);
2855 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
2856 extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
2857 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
2858 extern tree build_vector (tree, tree);
2859 extern tree build_constructor (tree, tree);
2860 extern tree build_real_from_int_cst (tree, tree);
2861 extern tree build_complex (tree, tree, tree);
2862 extern tree build_string (int, const char *);
2863 extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
2864 #define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
2865 extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
2866 #define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
2867 extern tree build_block (tree, tree, tree, tree, tree);
2868 #ifndef USE_MAPPED_LOCATION
2869 extern void annotate_with_file_line (tree, const char *, int);
2870 extern void annotate_with_locus (tree, location_t);
2872 extern tree build_empty_stmt (void);
2874 /* Construct various nodes representing data types. */
2876 extern tree make_signed_type (int);
2877 extern tree make_unsigned_type (int);
2878 extern tree signed_type_for (tree);
2879 extern tree unsigned_type_for (tree);
2880 extern void initialize_sizetypes (bool);
2881 extern void set_sizetype (tree);
2882 extern void fixup_unsigned_type (tree);
2883 extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
2884 extern tree build_pointer_type (tree);
2885 extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
2886 extern tree build_reference_type (tree);
2887 extern tree build_vector_type_for_mode (tree, enum machine_mode);
2888 extern tree build_vector_type (tree innertype, int nunits);
2889 extern tree build_type_no_quals (tree);
2890 extern tree build_index_type (tree);
2891 extern tree build_index_2_type (tree, tree);
2892 extern tree build_array_type (tree, tree);
2893 extern tree build_function_type (tree, tree);
2894 extern tree build_function_type_list (tree, ...);
2895 extern tree build_method_type_directly (tree, tree, tree);
2896 extern tree build_method_type (tree, tree);
2897 extern tree build_offset_type (tree, tree);
2898 extern tree build_complex_type (tree);
2899 extern tree array_type_nelts (tree);
2900 extern bool in_array_bounds_p (tree);
2902 extern tree value_member (tree, tree);
2903 extern tree purpose_member (tree, tree);
2905 extern int attribute_list_equal (tree, tree);
2906 extern int attribute_list_contained (tree, tree);
2907 extern int tree_int_cst_equal (tree, tree);
2908 extern int tree_int_cst_lt (tree, tree);
2909 extern int tree_int_cst_compare (tree, tree);
2910 extern int host_integerp (tree, int);
2911 extern HOST_WIDE_INT tree_low_cst (tree, int);
2912 extern int tree_int_cst_msb (tree);
2913 extern int tree_int_cst_sgn (tree);
2914 extern int tree_expr_nonnegative_p (tree);
2915 extern bool may_negate_without_overflow_p (tree);
2916 extern tree get_inner_array_type (tree);
2918 /* From expmed.c. Since rtl.h is included after tree.h, we can't
2919 put the prototype here. Rtl.h does declare the prototype if
2920 tree.h had been included. */
2922 extern tree make_tree (tree, rtx);
2924 /* Return a type like TTYPE except that its TYPE_ATTRIBUTES
2927 Such modified types already made are recorded so that duplicates
2930 extern tree build_type_attribute_variant (tree, tree);
2931 extern tree build_decl_attribute_variant (tree, tree);
2933 /* Structure describing an attribute and a function to handle it. */
2934 struct attribute_spec
2936 /* The name of the attribute (without any leading or trailing __),
2937 or NULL to mark the end of a table of attributes. */
2938 const char *const name;
2939 /* The minimum length of the list of arguments of the attribute. */
2940 const int min_length;
2941 /* The maximum length of the list of arguments of the attribute
2942 (-1 for no maximum). */
2943 const int max_length;
2944 /* Whether this attribute requires a DECL. If it does, it will be passed
2945 from types of DECLs, function return types and array element types to
2946 the DECLs, function types and array types respectively; but when
2947 applied to a type in any other circumstances, it will be ignored with
2948 a warning. (If greater control is desired for a given attribute,
2949 this should be false, and the flags argument to the handler may be
2950 used to gain greater control in that case.) */
2951 const bool decl_required;
2952 /* Whether this attribute requires a type. If it does, it will be passed
2953 from a DECL to the type of that DECL. */
2954 const bool type_required;
2955 /* Whether this attribute requires a function (or method) type. If it does,
2956 it will be passed from a function pointer type to the target type,
2957 and from a function return type (which is not itself a function
2958 pointer type) to the function type. */
2959 const bool function_type_required;
2960 /* Function to handle this attribute. NODE points to the node to which
2961 the attribute is to be applied. If a DECL, it should be modified in
2962 place; if a TYPE, a copy should be created. NAME is the name of the
2963 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
2964 of the arguments (which may be NULL). FLAGS gives further information
2965 about the context of the attribute. Afterwards, the attributes will
2966 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
2967 unless *NO_ADD_ATTRS is set to true (which should be done on error,
2968 as well as in any other cases when the attributes should not be added
2969 to the DECL or TYPE). Depending on FLAGS, any attributes to be
2970 applied to another type or DECL later may be returned;
2971 otherwise the return value should be NULL_TREE. This pointer may be
2972 NULL if no special handling is required beyond the checks implied
2973 by the rest of this structure. */
2974 tree (*const handler) (tree *node, tree name, tree args,
2975 int flags, bool *no_add_attrs);
2978 /* Flags that may be passed in the third argument of decl_attributes, and
2979 to handler functions for attributes. */
2980 enum attribute_flags
2982 /* The type passed in is the type of a DECL, and any attributes that
2983 should be passed in again to be applied to the DECL rather than the
2984 type should be returned. */
2985 ATTR_FLAG_DECL_NEXT = 1,
2986 /* The type passed in is a function return type, and any attributes that
2987 should be passed in again to be applied to the function type rather
2988 than the return type should be returned. */
2989 ATTR_FLAG_FUNCTION_NEXT = 2,
2990 /* The type passed in is an array element type, and any attributes that
2991 should be passed in again to be applied to the array type rather
2992 than the element type should be returned. */
2993 ATTR_FLAG_ARRAY_NEXT = 4,
2994 /* The type passed in is a structure, union or enumeration type being
2995 created, and should be modified in place. */
2996 ATTR_FLAG_TYPE_IN_PLACE = 8,
2997 /* The attributes are being applied by default to a library function whose
2998 name indicates known behavior, and should be silently ignored if they
2999 are not in fact compatible with the function type. */
3000 ATTR_FLAG_BUILT_IN = 16
3003 /* Default versions of target-overridable functions. */
3005 extern tree merge_decl_attributes (tree, tree);
3006 extern tree merge_type_attributes (tree, tree);
3007 extern void default_register_cpp_builtins (struct cpp_reader *);
3009 /* Return 1 if an attribute and its arguments are valid for a decl or type. */
3011 extern int valid_machine_attribute (tree, tree, tree, tree);
3013 /* Given a tree node and a string, return nonzero if the tree node is
3014 a valid attribute name for the string. */
3016 extern int is_attribute_p (const char *, tree);
3018 /* Given an attribute name and a list of attributes, return the list element
3019 of the attribute or NULL_TREE if not found. */
3021 extern tree lookup_attribute (const char *, tree);
3023 /* Given two attributes lists, return a list of their union. */
3025 extern tree merge_attributes (tree, tree);
3027 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
3028 /* Given two Windows decl attributes lists, possibly including
3029 dllimport, return a list of their union . */
3030 extern tree merge_dllimport_decl_attributes (tree, tree);
3032 /* Handle a "dllimport" or "dllexport" attribute. */
3033 extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
3036 /* Check whether CAND is suitable to be returned from get_qualified_type
3037 (BASE, TYPE_QUALS). */
3039 extern bool check_qualified_type (tree, tree, int);
3041 /* Return a version of the TYPE, qualified as indicated by the
3042 TYPE_QUALS, if one exists. If no qualified version exists yet,
3043 return NULL_TREE. */
3045 extern tree get_qualified_type (tree, int);
3047 /* Like get_qualified_type, but creates the type if it does not
3048 exist. This function never returns NULL_TREE. */
3050 extern tree build_qualified_type (tree, int);
3052 /* Like build_qualified_type, but only deals with the `const' and
3053 `volatile' qualifiers. This interface is retained for backwards
3054 compatibility with the various front-ends; new code should use
3055 build_qualified_type instead. */
3057 #define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
3058 build_qualified_type ((TYPE), \
3059 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
3060 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
3062 /* Make a copy of a type node. */
3064 extern tree build_distinct_type_copy (tree);
3065 extern tree build_variant_type_copy (tree);
3067 /* Finish up a builtin RECORD_TYPE. Give it a name and provide its
3068 fields. Optionally specify an alignment, and then lay it out. */
3070 extern void finish_builtin_struct (tree, const char *,
3073 /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
3074 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
3075 node, does nothing except for the first time. */
3077 extern void layout_type (tree);
3079 /* These functions allow a front-end to perform a manual layout of a
3080 RECORD_TYPE. (For instance, if the placement of subsequent fields
3081 depends on the placement of fields so far.) Begin by calling
3082 start_record_layout. Then, call place_field for each of the
3083 fields. Then, call finish_record_layout. See layout_type for the
3084 default way in which these functions are used. */
3086 typedef struct record_layout_info_s
3088 /* The RECORD_TYPE that we are laying out. */
3090 /* The offset into the record so far, in bytes, not including bits in
3093 /* The last known alignment of SIZE. */
3094 unsigned int offset_align;
3095 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
3097 /* The alignment of the record so far, in bits. */
3098 unsigned int record_align;
3099 /* The alignment of the record so far, ignoring #pragma pack and
3100 __attribute__ ((packed)), in bits. */
3101 unsigned int unpacked_align;
3102 /* The previous field layed out. */
3104 /* The static variables (i.e., class variables, as opposed to
3105 instance variables) encountered in T. */
3106 tree pending_statics;
3107 /* Bits remaining in the current alignment group */
3108 int remaining_in_alignment;
3109 /* True if we've seen a packed field that didn't have normal
3110 alignment anyway. */
3111 int packed_maybe_necessary;
3112 } *record_layout_info;
3114 extern void set_lang_adjust_rli (void (*) (record_layout_info));
3115 extern record_layout_info start_record_layout (tree);
3116 extern tree bit_from_pos (tree, tree);
3117 extern tree byte_from_pos (tree, tree);
3118 extern void pos_from_bit (tree *, tree *, unsigned int, tree);
3119 extern void normalize_offset (tree *, tree *, unsigned int);
3120 extern tree rli_size_unit_so_far (record_layout_info);
3121 extern tree rli_size_so_far (record_layout_info);
3122 extern void normalize_rli (record_layout_info);
3123 extern void place_field (record_layout_info, tree);
3124 extern void compute_record_mode (tree);
3125 extern void finish_record_layout (record_layout_info, int);
3127 /* Given a hashcode and a ..._TYPE node (for which the hashcode was made),
3128 return a canonicalized ..._TYPE node, so that duplicates are not made.
3129 How the hash code is computed is up to the caller, as long as any two
3130 callers that could hash identical-looking type nodes agree. */
3132 extern tree type_hash_canon (unsigned int, tree);
3134 /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node,
3135 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE
3136 fields. Call this only once for any given decl node.
3138 Second argument is the boundary that this field can be assumed to
3139 be starting at (in bits). Zero means it can be assumed aligned
3140 on any boundary that may be needed. */
3142 extern void layout_decl (tree, unsigned);
3144 /* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
3145 a previous call to layout_decl and calls it again. */
3147 extern void relayout_decl (tree);
3149 /* Return the mode for data of a given size SIZE and mode class CLASS.
3150 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
3151 The value is BLKmode if no other mode is found. This is like
3152 mode_for_size, but is passed a tree. */
3154 extern enum machine_mode mode_for_size_tree (tree, enum mode_class, int);
3156 /* Return an expr equal to X but certainly not valid as an lvalue. */
3158 extern tree non_lvalue (tree);
3159 extern tree pedantic_non_lvalue (tree);
3161 extern tree convert (tree, tree);
3162 extern unsigned int expr_align (tree);
3163 extern tree expr_first (tree);
3164 extern tree expr_last (tree);
3165 extern tree expr_only (tree);
3166 extern tree size_in_bytes (tree);
3167 extern HOST_WIDE_INT int_size_in_bytes (tree);
3168 extern tree bit_position (tree);
3169 extern HOST_WIDE_INT int_bit_position (tree);
3170 extern tree byte_position (tree);
3171 extern HOST_WIDE_INT int_byte_position (tree);
3173 /* Define data structures, macros, and functions for handling sizes
3174 and the various types used to represent sizes. */
3178 SIZETYPE, /* Normal representation of sizes in bytes. */
3179 SSIZETYPE, /* Signed representation of sizes in bytes. */
3180 BITSIZETYPE, /* Normal representation of sizes in bits. */
3181 SBITSIZETYPE, /* Signed representation of sizes in bits. */
3184 extern GTY(()) tree sizetype_tab[(int) TYPE_KIND_LAST];
3186 #define sizetype sizetype_tab[(int) SIZETYPE]
3187 #define bitsizetype sizetype_tab[(int) BITSIZETYPE]
3188 #define ssizetype sizetype_tab[(int) SSIZETYPE]
3189 #define sbitsizetype sizetype_tab[(int) SBITSIZETYPE]
3191 extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
3192 extern tree size_binop (enum tree_code, tree, tree);
3193 extern tree size_diffop (tree, tree);
3195 #define size_int(L) size_int_kind (L, SIZETYPE)
3196 #define ssize_int(L) size_int_kind (L, SSIZETYPE)
3197 #define bitsize_int(L) size_int_kind (L, BITSIZETYPE)
3198 #define sbitsize_int(L) size_int_kind (L, SBITSIZETYPE)
3200 extern tree round_up (tree, int);
3201 extern tree round_down (tree, int);
3202 extern tree get_pending_sizes (void);
3203 extern void put_pending_size (tree);
3204 extern void put_pending_sizes (tree);
3206 /* Type for sizes of data-type. */
3208 #define BITS_PER_UNIT_LOG \
3209 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \
3210 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
3211 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
3213 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
3214 extern unsigned int maximum_field_alignment;
3215 /* and its original value in bytes, specified via -fpack-struct=<value>. */
3216 extern unsigned int initial_max_fld_align;
3218 /* If nonzero, the alignment of a bitstring or (power-)set value, in bits. */
3219 extern unsigned int set_alignment;
3221 /* Concatenate two lists (chains of TREE_LIST nodes) X and Y
3222 by making the last node in X point to Y.
3223 Returns X, except if X is 0 returns Y. */
3225 extern tree chainon (tree, tree);
3227 /* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
3229 extern tree tree_cons_stat (tree, tree, tree MEM_STAT_DECL);
3230 #define tree_cons(t,q,w) tree_cons_stat (t,q,w MEM_STAT_INFO)
3232 /* Return the last tree node in a chain. */
3234 extern tree tree_last (tree);
3236 /* Reverse the order of elements in a chain, and return the new head. */
3238 extern tree nreverse (tree);
3240 /* Returns the length of a chain of nodes
3241 (number of chain pointers to follow before reaching a null pointer). */
3243 extern int list_length (tree);
3245 /* Returns the number of FIELD_DECLs in a type. */
3247 extern int fields_length (tree);
3249 /* Given an initializer INIT, return TRUE if INIT is zero or some
3250 aggregate of zeros. Otherwise return FALSE. */
3252 extern bool initializer_zerop (tree);
3254 extern void categorize_ctor_elements (tree, HOST_WIDE_INT *, HOST_WIDE_INT *);
3255 extern HOST_WIDE_INT count_type_elements (tree);
3256 extern int mostly_zeros_p (tree);
3258 /* add_var_to_bind_expr (bind_expr, var) binds var to bind_expr. */
3260 extern void add_var_to_bind_expr (tree, tree);
3262 /* integer_zerop (tree x) is nonzero if X is an integer constant of value 0 */
3264 extern int integer_zerop (tree);
3266 /* integer_onep (tree x) is nonzero if X is an integer constant of value 1 */
3268 extern int integer_onep (tree);
3270 /* integer_all_onesp (tree x) is nonzero if X is an integer constant
3271 all of whose significant bits are 1. */
3273 extern int integer_all_onesp (tree);
3275 /* integer_pow2p (tree x) is nonzero is X is an integer constant with
3276 exactly one bit 1. */
3278 extern int integer_pow2p (tree);
3280 /* integer_nonzerop (tree x) is nonzero if X is an integer constant
3281 with a nonzero value. */
3283 extern int integer_nonzerop (tree);
3285 extern bool zero_p (tree);
3286 extern bool cst_and_fits_in_hwi (tree);
3288 /* staticp (tree x) is nonzero if X is a reference to data allocated
3289 at a fixed address in memory. Returns the outermost data. */
3291 extern tree staticp (tree);
3293 /* save_expr (EXP) returns an expression equivalent to EXP
3294 but it can be used multiple times within context CTX
3295 and only evaluate EXP once. */
3297 extern tree save_expr (tree);
3299 /* Look inside EXPR and into any simple arithmetic operations. Return
3300 the innermost non-arithmetic node. */
3302 extern tree skip_simple_arithmetic (tree);
3304 /* Returns the index of the first non-tree operand for CODE, or the number
3305 of operands if all are trees. */
3307 extern int first_rtl_op (enum tree_code);
3309 /* Return which tree structure is used by T. */
3311 enum tree_node_structure_enum tree_node_structure (tree);
3313 /* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
3314 or offset that depends on a field within a record.
3316 Note that we only allow such expressions within simple arithmetic
3319 extern bool contains_placeholder_p (tree);
3321 /* This macro calls the above function but short-circuits the common
3322 case of a constant to save time. Also check for null. */
3324 #define CONTAINS_PLACEHOLDER_P(EXP) \
3325 ((EXP) != 0 && ! TREE_CONSTANT (EXP) && contains_placeholder_p (EXP))
3327 /* Return 1 if any part of the computation of TYPE involves a PLACEHOLDER_EXPR.
3328 This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and field
3331 extern bool type_contains_placeholder_p (tree);
3333 /* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
3334 return a tree with all occurrences of references to F in a
3335 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP
3336 contains only arithmetic expressions. */
3338 extern tree substitute_in_expr (tree, tree, tree);
3340 /* This macro calls the above function but short-circuits the common
3341 case of a constant to save time and also checks for NULL. */
3343 #define SUBSTITUTE_IN_EXPR(EXP, F, R) \
3344 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) : substitute_in_expr (EXP, F, R))
3346 /* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
3347 for it within OBJ, a tree that is an object or a chain of references. */
3349 extern tree substitute_placeholder_in_expr (tree, tree);
3351 /* This macro calls the above function but short-circuits the common
3352 case of a constant to save time and also checks for NULL. */
3354 #define SUBSTITUTE_PLACEHOLDER_IN_EXPR(EXP, OBJ) \
3355 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) \
3356 : substitute_placeholder_in_expr (EXP, OBJ))
3358 /* variable_size (EXP) is like save_expr (EXP) except that it
3359 is for the special case of something that is part of a
3360 variable size for a data type. It makes special arrangements
3361 to compute the value at the right time when the data type
3362 belongs to a function parameter. */
3364 extern tree variable_size (tree);
3366 /* stabilize_reference (EXP) returns a reference equivalent to EXP
3367 but it can be used multiple times
3368 and only evaluate the subexpressions once. */
3370 extern tree stabilize_reference (tree);
3372 /* Subroutine of stabilize_reference; this is called for subtrees of
3373 references. Any expression with side-effects must be put in a SAVE_EXPR
3374 to ensure that it is only evaluated once. */
3376 extern tree stabilize_reference_1 (tree);
3378 /* Return EXP, stripped of any conversions to wider types
3379 in such a way that the result of converting to type FOR_TYPE
3380 is the same as if EXP were converted to FOR_TYPE.
3381 If FOR_TYPE is 0, it signifies EXP's type. */
3383 extern tree get_unwidened (tree, tree);
3385 /* Return OP or a simpler expression for a narrower value
3386 which can be sign-extended or zero-extended to give back OP.
3387 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
3388 or 0 if the value should be sign-extended. */
3390 extern tree get_narrower (tree, int *);
3392 /* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF,
3393 look for nested component-refs or array-refs at constant positions
3394 and find the ultimate containing object, which is returned. */
3396 extern tree get_inner_reference (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
3397 tree *, enum machine_mode *, int *, int *);
3399 /* Return 1 if T is an expression that get_inner_reference handles. */
3401 extern int handled_component_p (tree);
3403 /* Return a tree of sizetype representing the size, in bytes, of the element
3404 of EXP, an ARRAY_REF. */
3406 extern tree array_ref_element_size (tree);
3408 /* Return a tree representing the lower bound of the array mentioned in
3409 EXP, an ARRAY_REF. */
3411 extern tree array_ref_low_bound (tree);
3413 /* Return a tree representing the upper bound of the array mentioned in
3414 EXP, an ARRAY_REF. */
3416 extern tree array_ref_up_bound (tree);
3418 /* Return a tree representing the offset, in bytes, of the field referenced
3419 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
3421 extern tree component_ref_field_offset (tree);
3423 /* Given a DECL or TYPE, return the scope in which it was declared, or
3424 NUL_TREE if there is no containing scope. */
3426 extern tree get_containing_scope (tree);
3428 /* Return the FUNCTION_DECL which provides this _DECL with its context,
3430 extern tree decl_function_context (tree);
3432 /* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides
3433 this _DECL with its context, or zero if none. */
3434 extern tree decl_type_context (tree);
3436 /* Return 1 if EXPR is the real constant zero. */
3437 extern int real_zerop (tree);
3439 /* Declare commonly used variables for tree structure. */
3441 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
3442 Zero means allow extended lvalues. */
3444 extern int pedantic_lvalues;
3446 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
3448 extern GTY(()) tree current_function_decl;
3450 /* Nonzero means a FUNC_BEGIN label was emitted. */
3451 extern GTY(()) const char * current_function_func_begin_label;
3454 extern unsigned crc32_string (unsigned, const char *);
3455 extern void clean_symbol_name (char *);
3456 extern tree get_file_function_name_long (const char *);
3457 extern tree get_set_constructor_bits (tree, char *, int);
3458 extern tree get_set_constructor_bytes (tree, unsigned char *, int);
3459 extern tree get_callee_fndecl (tree);
3460 extern void change_decl_assembler_name (tree, tree);
3461 extern int type_num_arguments (tree);
3462 extern bool associative_tree_code (enum tree_code);
3463 extern bool commutative_tree_code (enum tree_code);
3468 extern void expand_expr_stmt (tree);
3469 extern void expand_expr_stmt_value (tree, int, int);
3470 extern int warn_if_unused_value (tree, location_t);
3471 extern void expand_decl_init (tree);
3472 extern void expand_label (tree);
3473 extern void expand_goto (tree);
3474 extern void expand_asm (tree, int);
3476 extern rtx expand_stack_save (void);
3477 extern void expand_stack_restore (tree);
3478 extern void expand_return (tree);
3479 extern int is_body_block (tree);
3482 extern void using_eh_for_cleanups (void);
3484 /* In fold-const.c */
3486 /* Fold constants as much as possible in an expression.
3487 Returns the simplified expression.
3488 Acts only on the top level of the expression;
3489 if the argument itself cannot be simplified, its
3490 subexpressions are not changed. */
3492 extern tree fold (tree);
3493 extern tree fold_initializer (tree);
3494 extern tree fold_convert (tree, tree);
3495 extern tree fold_single_bit_test (enum tree_code, tree, tree, tree);
3496 extern tree fold_ignored_result (tree);
3497 extern tree fold_abs_const (tree, tree);
3499 extern tree force_fit_type (tree, int, bool, bool);
3501 extern int add_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3502 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3503 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3504 extern int neg_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3505 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3506 extern int mul_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3507 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3508 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3509 extern void lshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3510 HOST_WIDE_INT, unsigned int,
3511 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
3512 extern void rshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3513 HOST_WIDE_INT, unsigned int,
3514 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
3515 extern void lrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3516 HOST_WIDE_INT, unsigned int,
3517 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3518 extern void rrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3519 HOST_WIDE_INT, unsigned int,
3520 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3522 extern int div_and_round_double (enum tree_code, int, unsigned HOST_WIDE_INT,
3523 HOST_WIDE_INT, unsigned HOST_WIDE_INT,
3524 HOST_WIDE_INT, unsigned HOST_WIDE_INT *,
3525 HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
3528 enum operand_equal_flag
3534 extern int operand_equal_p (tree, tree, unsigned int);
3536 extern tree omit_one_operand (tree, tree, tree);
3537 extern tree omit_two_operands (tree, tree, tree, tree);
3538 extern tree invert_truthvalue (tree);
3539 extern tree nondestructive_fold_unary_to_constant (enum tree_code, tree, tree);
3540 extern tree nondestructive_fold_binary_to_constant (enum tree_code, tree, tree, tree);
3541 extern tree fold_read_from_constant_string (tree);
3542 extern tree int_const_binop (enum tree_code, tree, tree, int);
3543 extern tree build_fold_addr_expr (tree);
3544 extern tree build_fold_addr_expr_with_type (tree, tree);
3545 extern tree build_fold_indirect_ref (tree);
3546 extern tree constant_boolean_node (int, tree);
3548 extern bool tree_swap_operands_p (tree, tree, bool);
3549 extern enum tree_code swap_tree_comparison (enum tree_code);
3551 extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
3554 extern tree fold_builtin (tree, bool);
3555 extern tree fold_builtin_fputs (tree, bool, bool, tree);
3556 extern tree fold_builtin_strcpy (tree, tree);
3557 extern tree fold_builtin_strncpy (tree, tree);
3558 extern enum built_in_function builtin_mathfn_code (tree);
3559 extern tree build_function_call_expr (tree, tree);
3560 extern tree mathfn_built_in (tree, enum built_in_function fn);
3561 extern tree strip_float_extensions (tree);
3562 extern tree c_strlen (tree, int);
3563 extern tree std_gimplify_va_arg_expr (tree, tree, tree *, tree *);
3564 extern tree build_va_arg_indirect_ref (tree);
3567 extern tree strip_float_extensions (tree);
3570 extern void record_component_aliases (tree);
3571 extern HOST_WIDE_INT get_alias_set (tree);
3572 extern int alias_sets_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
3573 extern int alias_sets_might_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
3574 extern int objects_must_conflict_p (tree, tree);
3577 extern int really_constant_p (tree);
3578 extern int int_fits_type_p (tree, tree);
3579 extern bool variably_modified_type_p (tree, tree);
3580 extern int tree_log2 (tree);
3581 extern int tree_floor_log2 (tree);
3582 extern int simple_cst_equal (tree, tree);
3583 extern unsigned int iterative_hash_expr (tree, unsigned int);
3584 extern int compare_tree_int (tree, unsigned HOST_WIDE_INT);
3585 extern int type_list_equal (tree, tree);
3586 extern int chain_member (tree, tree);
3587 extern tree type_hash_lookup (unsigned int, tree);
3588 extern void type_hash_add (unsigned int, tree);
3589 extern int simple_cst_list_equal (tree, tree);
3590 extern void dump_tree_statistics (void);
3591 extern void expand_function_end (void);
3592 extern void expand_function_start (tree);
3593 extern void expand_pending_sizes (tree);
3594 extern void recompute_tree_invarant_for_addr_expr (tree);
3595 extern bool is_global_var (tree t);
3596 extern bool needs_to_live_in_memory (tree);
3597 extern tree reconstruct_complex_type (tree, tree);
3599 extern int real_onep (tree);
3600 extern int real_twop (tree);
3601 extern int real_minus_onep (tree);
3602 extern void init_ttree (void);
3603 extern void build_common_tree_nodes (bool, bool);
3604 extern void build_common_tree_nodes_2 (int);
3605 extern tree build_nonstandard_integer_type (unsigned HOST_WIDE_INT, int);
3606 extern tree build_range_type (tree, tree, tree);
3607 extern HOST_WIDE_INT int_cst_value (tree);
3608 extern tree tree_fold_gcd (tree, tree);
3609 extern tree build_addr (tree);
3611 extern bool fields_compatible_p (tree, tree);
3612 extern tree find_compatible_field (tree, tree);
3615 extern void expand_main_function (void);
3616 extern void init_dummy_function_start (void);
3617 extern void expand_dummy_function_end (void);
3618 extern void init_function_for_compilation (void);
3619 extern void allocate_struct_function (tree);
3620 extern void init_function_start (tree);
3621 extern bool use_register_for_decl (tree);
3622 extern void assign_parms (tree);
3623 extern void setjmp_vars_warning (tree);
3624 extern void setjmp_args_warning (void);
3625 extern void init_temp_slots (void);
3626 extern void combine_temp_slots (void);
3627 extern void free_temp_slots (void);
3628 extern void pop_temp_slots (void);
3629 extern void push_temp_slots (void);
3630 extern void preserve_temp_slots (rtx);
3631 extern void preserve_rtl_expr_temps (tree);
3632 extern int aggregate_value_p (tree, tree);
3633 extern void push_function_context (void);
3634 extern void pop_function_context (void);
3635 extern void push_function_context_to (tree);
3636 extern void pop_function_context_from (tree);
3638 /* In print-rtl.c */
3640 extern void print_rtl (FILE *, rtx);
3643 /* In print-tree.c */
3644 extern void debug_tree (tree);
3646 extern void print_node (FILE *, const char *, tree, int);
3647 extern void print_node_brief (FILE *, const char *, tree, int);
3648 extern void indent_to (FILE *, int);
3651 /* In tree-inline.c: */
3652 extern bool debug_find_tree (tree, tree);
3653 /* This is in tree-inline.c since the routine uses
3654 data structures from the inliner. */
3655 extern tree unsave_expr_now (tree);
3658 extern rtx expand_builtin_return_addr (enum built_in_function, int, rtx);
3659 extern void check_max_integer_computation_mode (tree);
3662 extern rtx emit_line_note (location_t);
3666 /* Nonzero if this is a call to a `const' function. */
3668 /* Nonzero if this is a call to a `volatile' function. */
3669 #define ECF_NORETURN 2
3670 /* Nonzero if this is a call to malloc or a related function. */
3671 #define ECF_MALLOC 4
3672 /* Nonzero if it is plausible that this is a call to alloca. */
3673 #define ECF_MAY_BE_ALLOCA 8
3674 /* Nonzero if this is a call to a function that won't throw an exception. */
3675 #define ECF_NOTHROW 16
3676 /* Nonzero if this is a call to setjmp or a related function. */
3677 #define ECF_RETURNS_TWICE 32
3678 /* Nonzero if this is a call to `longjmp'. */
3679 #define ECF_LONGJMP 64
3680 /* Nonzero if this is a syscall that makes a new process in the image of
3682 #define ECF_SIBCALL 128
3683 /* Nonzero if this is a call to "pure" function (like const function,
3684 but may read memory. */
3685 #define ECF_PURE 256
3686 /* Nonzero if this is a call to a function that returns with the stack
3687 pointer depressed. */
3688 #define ECF_SP_DEPRESSED 512
3689 /* Nonzero if this call is known to always return. */
3690 #define ECF_ALWAYS_RETURN 1024
3691 /* Create libcall block around the call. */
3692 #define ECF_LIBCALL_BLOCK 2048
3694 extern int flags_from_decl_or_type (tree);
3695 extern int call_expr_flags (tree);
3697 extern int setjmp_call_p (tree);
3698 extern bool alloca_call_p (tree);
3699 extern bool must_pass_in_stack_var_size (enum machine_mode, tree);
3700 extern bool must_pass_in_stack_var_size_or_pad (enum machine_mode, tree);
3704 /* Process the attributes listed in ATTRIBUTES and install them in *NODE,
3705 which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
3706 it should be modified in place; if a TYPE, a copy should be created
3707 unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
3708 information, in the form of a bitwise OR of flags in enum attribute_flags
3709 from tree.h. Depending on these flags, some attributes may be
3710 returned to be applied at a later stage (for example, to apply
3711 a decl attribute to the declaration rather than to its type). */
3712 extern tree decl_attributes (tree *, tree, int);
3714 /* In integrate.c */
3715 extern void set_decl_abstract_flags (tree, int);
3716 extern void set_decl_origin_self (tree);
3718 /* In stor-layout.c */
3719 extern void set_min_and_max_values_for_integral_type (tree, int, bool);
3720 extern void fixup_signed_type (tree);
3721 extern void internal_reference_types (void);
3722 extern unsigned int update_alignment_for_field (record_layout_info, tree,
3725 extern void make_decl_rtl (tree);
3726 extern void make_decl_one_only (tree);
3727 extern int supports_one_only (void);
3728 extern void variable_section (tree, int);
3729 enum tls_model decl_tls_model (tree);
3730 extern void resolve_unique_section (tree, int, int);
3731 extern void mark_referenced (tree);
3732 extern void mark_decl_referenced (tree);
3733 extern void notice_global_symbol (tree);
3734 extern void set_user_assembler_name (tree, const char *);
3737 extern void expand_computed_goto (tree);
3738 extern bool parse_output_constraint (const char **, int, int, int,
3739 bool *, bool *, bool *);
3740 extern bool parse_input_constraint (const char **, int, int, int, int,
3741 const char * const *, bool *, bool *);
3742 extern void expand_asm_operands (tree, tree, tree, tree, int, location_t);
3743 extern void expand_asm_expr (tree);
3744 extern bool asm_op_is_mem_input (tree, tree);
3745 extern tree resolve_asm_operand_names (tree, tree, tree);
3746 extern void expand_case (tree);
3747 extern void expand_decl (tree);
3748 extern void expand_anon_union_decl (tree, tree, tree);
3750 /* In gimplify.c. */
3751 extern tree create_artificial_label (void);
3752 extern void gimplify_function_tree (tree);
3753 extern const char *get_name (tree);
3754 extern tree unshare_expr (tree);
3755 extern void sort_case_labels (tree);
3757 /* If KIND=='I', return a suitable global initializer (constructor) name.
3758 If KIND=='D', return a suitable global clean-up (destructor) name. */
3759 extern tree get_file_function_name (int);
3761 /* Interface of the DWARF2 unwind info support. */
3763 /* Generate a new label for the CFI info to refer to. */
3765 extern char *dwarf2out_cfi_label (void);
3767 /* Entry point to update the canonical frame address (CFA). */
3769 extern void dwarf2out_def_cfa (const char *, unsigned, HOST_WIDE_INT);
3771 /* Add the CFI for saving a register window. */
3773 extern void dwarf2out_window_save (const char *);
3775 /* Add a CFI to update the running total of the size of arguments pushed
3778 extern void dwarf2out_args_size (const char *, HOST_WIDE_INT);
3780 /* Entry point for saving a register to the stack. */
3782 extern void dwarf2out_reg_save (const char *, unsigned, HOST_WIDE_INT);
3784 /* Entry point for saving the return address in the stack. */
3786 extern void dwarf2out_return_save (const char *, HOST_WIDE_INT);
3788 /* Entry point for saving the return address in a register. */
3790 extern void dwarf2out_return_reg (const char *, unsigned);
3792 /* In tree-inline.c */
3794 /* The type of a callback function for walking over tree structure. */
3796 typedef tree (*walk_tree_fn) (tree *, int *, void *);
3797 extern tree walk_tree (tree*, walk_tree_fn, void*, void*);
3798 extern tree walk_tree_without_duplicates (tree*, walk_tree_fn, void*);
3800 /* In tree-dump.c */
3802 /* Different tree dump places. When you add new tree dump places,
3803 extend the DUMP_FILES array in tree-dump.c. */
3804 enum tree_dump_index
3806 TDI_none, /* No dump */
3807 TDI_tu, /* dump the whole translation unit. */
3808 TDI_class, /* dump class hierarchy. */
3809 TDI_original, /* dump each function before optimizing it */
3810 TDI_generic, /* dump each function after genericizing it */
3811 TDI_nested, /* dump each function after unnesting it */
3812 TDI_inlined, /* dump each function after inlining
3814 TDI_vcg, /* create a VCG graph file for each
3815 function's flowgraph. */
3816 TDI_tree_all, /* enable all the GENERIC/GIMPLE dumps. */
3817 TDI_rtl_all, /* enable all the RTL dumps. */
3818 TDI_ipa_all, /* enable all the IPA dumps. */
3820 TDI_cgraph, /* dump function call graph. */
3822 DFI_MIN, /* For now, RTL dumps are placed here. */
3823 DFI_sibling = DFI_MIN,
3853 DFI_branch_target_load,
3863 /* Bit masks to control dumping. Not all values are applicable to
3864 all dumps. Add new ones at the end. When you define new
3865 values, extend the DUMP_OPTIONS array in tree-dump.c */
3866 #define TDF_ADDRESS (1 << 0) /* dump node addresses */
3867 #define TDF_SLIM (1 << 1) /* don't go wild following links */
3868 #define TDF_RAW (1 << 2) /* don't unparse the function */
3869 #define TDF_DETAILS (1 << 3) /* show more detailed info about
3871 #define TDF_STATS (1 << 4) /* dump various statistics about
3873 #define TDF_BLOCKS (1 << 5) /* display basic block boundaries */
3874 #define TDF_VOPS (1 << 6) /* display virtual operands */
3875 #define TDF_LINENO (1 << 7) /* display statement line numbers */
3876 #define TDF_UID (1 << 8) /* display decl UIDs */
3878 #define TDF_TREE (1 << 9) /* is a tree dump */
3879 #define TDF_RTL (1 << 10) /* is a RTL dump */
3880 #define TDF_IPA (1 << 11) /* is an IPA dump */
3882 typedef struct dump_info *dump_info_p;
3884 extern char *get_dump_file_name (enum tree_dump_index);
3885 extern int dump_flag (dump_info_p, int, tree);
3886 extern int dump_enabled_p (enum tree_dump_index);
3887 extern int dump_initialized_p (enum tree_dump_index);
3888 extern FILE *dump_begin (enum tree_dump_index, int *);
3889 extern void dump_end (enum tree_dump_index, FILE *);
3890 extern void dump_node (tree, int, FILE *);
3891 extern int dump_switch_p (const char *);
3892 extern const char *dump_flag_name (enum tree_dump_index);
3893 /* Assign the RTX to declaration. */
3895 extern void set_decl_rtl (tree, rtx);
3896 extern void set_decl_incoming_rtl (tree, rtx);
3898 /* Enum and arrays used for tree allocation stats.
3899 Keep in sync with tree.c:tree_node_kind_names. */
3922 extern int tree_node_counts[];
3923 extern int tree_node_sizes[];
3925 /* True if we are in gimple form and the actions of the folders need to
3926 be restricted. False if we are not in gimple form and folding is not
3927 restricted to creating gimple expressions. */
3928 extern bool in_gimple_form;
3930 /* In tree-ssa-loop-niter.c. */
3931 tree lower_bound_in_type (tree, tree);
3932 tree upper_bound_in_type (tree, tree);
3934 /* In tree-ssa-threadupdate.c. */
3935 extern bool thread_through_all_blocks (void);
3937 /* In tree-gimple.c. */
3938 extern tree get_base_address (tree t);
3940 #endif /* GCC_TREE_H */
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