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 (ALIGN/MISALIGNED_)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. Similarly for
905 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
907 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
908 (or slice of the array) always belongs to the range of the array.
909 I.e. that the access will not trap, provided that the access to
910 the base to the array will not trap. */
911 #define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
913 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
914 nonzero means it may not be the lhs of an assignment. */
915 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)
917 /* Nonzero if NODE is a _DECL with TREE_READONLY set. */
918 #define TREE_READONLY_DECL_P(NODE)\
919 (DECL_P (NODE) && TREE_READONLY (NODE))
921 /* Value of expression is constant. Always on in all ..._CST nodes. May
922 also appear in an expression or decl where the value is constant. */
923 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->common.constant_flag)
925 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
926 #define DECL_UNSIGNED(NODE) (DECL_CHECK (NODE)->common.unsigned_flag)
928 /* In a BIT_FIELD_REF, means the bitfield is to be interpreted as unsigned. */
929 #define BIT_FIELD_REF_UNSIGNED(NODE) \
930 (BIT_FIELD_REF_CHECK (NODE)->common.unsigned_flag)
932 /* In integral and pointer types, means an unsigned type. */
933 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->common.unsigned_flag)
935 #define TYPE_TRAP_SIGNED(NODE) \
936 (flag_trapv && ! TYPE_UNSIGNED (NODE))
938 /* Nonzero in a VAR_DECL means assembler code has been written.
939 Nonzero in a FUNCTION_DECL means that the function has been compiled.
940 This is interesting in an inline function, since it might not need
941 to be compiled separately.
942 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
943 if the sdb debugging info for the type has been written.
944 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
945 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
947 #define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag)
949 /* Nonzero in a _DECL if the name is used in its scope.
950 Nonzero in an expr node means inhibit warning if value is unused.
951 In IDENTIFIER_NODEs, this means that some extern decl for this name
953 #define TREE_USED(NODE) ((NODE)->common.used_flag)
955 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
956 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
957 #define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
959 /* In a CALL_EXPR, means that the address of the return slot is part of the
961 #define CALL_EXPR_HAS_RETURN_SLOT_ADDR(NODE) ((NODE)->common.private_flag)
963 /* In a RESULT_DECL or PARM_DECL, means that it is passed by invisible
964 reference (and the TREE_TYPE is a pointer to the true type). */
965 #define DECL_BY_REFERENCE(NODE) (DECL_CHECK (NODE)->common.private_flag)
967 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
968 thunked-to function. */
969 #define CALL_FROM_THUNK_P(NODE) ((NODE)->common.protected_flag)
971 /* In a type, nonzero means that all objects of the type are guaranteed by the
972 language or front-end to be properly aligned, so we can indicate that a MEM
973 of this type is aligned at least to the alignment of the type, even if it
974 doesn't appear that it is. We see this, for example, in object-oriented
975 languages where a tag field may show this is an object of a more-aligned
976 variant of the more generic type.
978 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
980 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->common.nothrow_flag)
982 /* Used in classes in C++. */
983 #define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
984 /* Used in classes in C++.
985 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */
986 #define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag)
988 /* Nonzero in an IDENTIFIER_NODE if the use of the name is defined as a
989 deprecated feature by __attribute__((deprecated)). */
990 #define TREE_DEPRECATED(NODE) ((NODE)->common.deprecated_flag)
992 /* Value of expression is function invariant. A strict subset of
993 TREE_CONSTANT, such an expression is constant over any one function
994 invocation, though not across different invocations. May appear in
995 any expression node. */
996 #define TREE_INVARIANT(NODE) ((NODE)->common.invariant_flag)
998 /* These flags are available for each language front end to use internally. */
999 #define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
1000 #define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
1001 #define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2)
1002 #define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3)
1003 #define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4)
1004 #define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5)
1005 #define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6)
1007 /* Define additional fields and accessors for nodes representing constants. */
1009 /* In an INTEGER_CST node. These two together make a 2-word integer.
1010 If the data type is signed, the value is sign-extended to 2 words
1011 even though not all of them may really be in use.
1012 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1013 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1014 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1015 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1017 #define INT_CST_LT(A, B) \
1018 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1019 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1020 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1022 #define INT_CST_LT_UNSIGNED(A, B) \
1023 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1024 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1025 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1026 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1027 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1029 struct tree_int_cst GTY(())
1031 struct tree_common common;
1032 /* A sub-struct is necessary here because the function `const_hash'
1033 wants to scan both words as a unit and taking the address of the
1034 sub-struct yields the properly inclusive bounded pointer. */
1035 struct tree_int_cst_lowhi {
1036 unsigned HOST_WIDE_INT low;
1041 /* In a REAL_CST node. struct real_value is an opaque entity, with
1042 manipulators defined in real.h. We don't want tree.h depending on
1043 real.h and transitively on tm.h. */
1046 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1047 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1049 struct tree_real_cst GTY(())
1051 struct tree_common common;
1052 struct real_value * real_cst_ptr;
1055 /* In a STRING_CST */
1056 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1057 #define TREE_STRING_POINTER(NODE) (STRING_CST_CHECK (NODE)->string.str)
1059 struct tree_string GTY(())
1061 struct tree_common common;
1066 /* In a COMPLEX_CST node. */
1067 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1068 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1070 struct tree_complex GTY(())
1072 struct tree_common common;
1077 /* In a VECTOR_CST node. */
1078 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1080 struct tree_vector GTY(())
1082 struct tree_common common;
1088 /* Define fields and accessors for some special-purpose tree nodes. */
1090 #define IDENTIFIER_LENGTH(NODE) \
1091 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1092 #define IDENTIFIER_POINTER(NODE) \
1093 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1094 #define IDENTIFIER_HASH_VALUE(NODE) \
1095 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1097 /* Translate a hash table identifier pointer to a tree_identifier
1098 pointer, and vice versa. */
1100 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1101 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1102 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1104 struct tree_identifier GTY(())
1106 struct tree_common common;
1107 struct ht_identifier id;
1110 /* In a TREE_LIST node. */
1111 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1112 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1114 struct tree_list GTY(())
1116 struct tree_common common;
1121 /* In a TREE_VEC node. */
1122 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1123 #define TREE_VEC_END(NODE) \
1124 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1126 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1128 struct tree_vec GTY(())
1130 struct tree_common common;
1132 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1135 /* Define fields and accessors for some nodes that represent expressions. */
1137 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1138 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1139 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1140 && integer_zerop (TREE_OPERAND (NODE, 0)))
1142 /* In a CONSTRUCTOR node. */
1143 #define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND_CHECK_CODE (NODE, CONSTRUCTOR, 0)
1145 /* In ordinary expression nodes. */
1146 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1147 #define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity)
1149 /* In INDIRECT_REF, ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF. */
1150 #define REF_ORIGINAL(NODE) TREE_CHAIN (TREE_CHECK3 (NODE, \
1151 INDIRECT_REF, ALIGN_INDIRECT_REF, MISALIGNED_INDIRECT_REF))
1153 /* In a LABELED_BLOCK_EXPR node. */
1154 #define LABELED_BLOCK_LABEL(NODE) \
1155 TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 0)
1156 #define LABELED_BLOCK_BODY(NODE) \
1157 TREE_OPERAND_CHECK_CODE (NODE, LABELED_BLOCK_EXPR, 1)
1159 /* In an EXIT_BLOCK_EXPR node. */
1160 #define EXIT_BLOCK_LABELED_BLOCK(NODE) \
1161 TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 0)
1162 #define EXIT_BLOCK_RETURN(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_BLOCK_EXPR, 1)
1164 /* In a LOOP_EXPR node. */
1165 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1167 #ifdef USE_MAPPED_LOCATION
1168 /* The source location of this expression. Non-tree_exp nodes such as
1169 decls and constants can be shared among multiple locations, so
1171 #define EXPR_LOCATION(NODE) \
1172 (EXPR_P (NODE) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1173 #define SET_EXPR_LOCATION(NODE, FROM) \
1174 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1175 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1176 /* EXPR_LOCUS and SET_EXPR_LOCUS are deprecated. */
1177 #define EXPR_LOCUS(NODE) \
1178 (EXPR_P (NODE) ? &(NODE)->exp.locus : (location_t *)NULL)
1179 #define SET_EXPR_LOCUS(NODE, FROM) \
1180 do { source_location *loc_tmp = FROM; \
1181 EXPR_CHECK (NODE)->exp.locus \
1182 = loc_tmp == NULL ? UNKNOWN_LOCATION : *loc_tmp; } while (0)
1183 #define EXPR_FILENAME(NODE) \
1184 LOCATION_FILE (EXPR_CHECK (NODE)->exp.locus)
1185 #define EXPR_LINENO(NODE) \
1186 LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1188 /* The source location of this expression. Non-tree_exp nodes such as
1189 decls and constants can be shared among multiple locations, so
1191 #define EXPR_LOCUS(NODE) \
1192 (EXPR_P (NODE) ? (NODE)->exp.locus : (location_t *)NULL)
1193 #define SET_EXPR_LOCUS(NODE, FROM) \
1194 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1195 #define SET_EXPR_LOCATION(NODE, FROM) annotate_with_locus (NODE, FROM)
1196 #define EXPR_FILENAME(NODE) \
1197 (EXPR_CHECK (NODE)->exp.locus->file)
1198 #define EXPR_LINENO(NODE) \
1199 (EXPR_CHECK (NODE)->exp.locus->line)
1200 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCUS (NODE) != NULL)
1201 #define EXPR_LOCATION(NODE) \
1202 (EXPR_HAS_LOCATION(NODE) ? *(NODE)->exp.locus : UNKNOWN_LOCATION)
1205 /* In a TARGET_EXPR node. */
1206 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1207 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1208 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1210 /* DECL_EXPR accessor. This gives access to the DECL associated with
1211 the given declaration statement. */
1212 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1214 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1216 /* SWITCH_EXPR accessors. These give access to the condition, body and
1217 original condition type (before any compiler conversions)
1218 of the switch statement, respectively. */
1219 #define SWITCH_COND(NODE) TREE_OPERAND ((NODE), 0)
1220 #define SWITCH_BODY(NODE) TREE_OPERAND ((NODE), 1)
1221 #define SWITCH_LABELS(NODE) TREE_OPERAND ((NODE), 2)
1223 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1224 of a case label, respectively. */
1225 #define CASE_LOW(NODE) TREE_OPERAND ((NODE), 0)
1226 #define CASE_HIGH(NODE) TREE_OPERAND ((NODE), 1)
1227 #define CASE_LABEL(NODE) TREE_OPERAND ((NODE), 2)
1229 /* The operands of a BIND_EXPR. */
1230 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1231 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1232 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1234 /* GOTO_EXPR accessor. This gives access to the label associated with
1235 a goto statement. */
1236 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1238 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1239 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1240 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1242 #define ASM_STRING(NODE) TREE_OPERAND ((NODE), 0)
1243 #define ASM_OUTPUTS(NODE) TREE_OPERAND ((NODE), 1)
1244 #define ASM_INPUTS(NODE) TREE_OPERAND ((NODE), 2)
1245 #define ASM_CLOBBERS(NODE) TREE_OPERAND ((NODE), 3)
1246 /* Nonzero if we want to create an ASM_INPUT instead of an
1247 ASM_OPERAND with no operands. */
1248 #define ASM_INPUT_P(NODE) (TREE_STATIC (NODE))
1249 #define ASM_VOLATILE_P(NODE) (TREE_PUBLIC (NODE))
1251 /* COND_EXPR accessors. */
1252 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1253 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1254 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1256 /* LABEL_EXPR accessor. This gives access to the label associated with
1257 the given label expression. */
1258 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1260 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1261 accessors for SSA operands. */
1263 /* CATCH_EXPR accessors. */
1264 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1265 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1267 /* EH_FILTER_EXPR accessors. */
1268 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1269 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1270 #define EH_FILTER_MUST_NOT_THROW(NODE) TREE_STATIC (EH_FILTER_EXPR_CHECK (NODE))
1272 /* OBJ_TYPE_REF accessors. */
1273 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1274 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1275 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1277 struct tree_exp GTY(())
1279 struct tree_common common;
1283 tree GTY ((special ("tree_exp"),
1284 desc ("TREE_CODE ((tree) &%0)")))
1288 /* SSA_NAME accessors. */
1290 /* Returns the variable being referenced. Once released, this is the
1291 only field that can be relied upon. */
1292 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1294 /* Returns the statement which defines this reference. Note that
1295 we use the same field when chaining SSA_NAME nodes together on
1296 the SSA_NAME freelist. */
1297 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->common.chain
1299 /* Returns the SSA version number of this SSA name. Note that in
1300 tree SSA, version numbers are not per variable and may be recycled. */
1301 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1303 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1304 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1306 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1307 SSA_NAME_CHECK (NODE)->common.asm_written_flag
1309 /* Nonzero if this SSA_NAME expression is currently on the free list of
1310 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1311 has no meaning for an SSA_NAME. */
1312 #define SSA_NAME_IN_FREE_LIST(NODE) \
1313 SSA_NAME_CHECK (NODE)->common.nothrow_flag
1315 /* Attributes for SSA_NAMEs for pointer-type variables. */
1316 #define SSA_NAME_PTR_INFO(N) \
1317 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1319 /* Get the value of this SSA_NAME, if available. */
1320 #define SSA_NAME_VALUE(N) \
1321 SSA_NAME_CHECK (N)->ssa_name.value_handle
1323 /* Auxiliary pass-specific data. */
1324 #define SSA_NAME_AUX(N) \
1325 SSA_NAME_CHECK (N)->ssa_name.aux
1327 #ifndef _TREE_FLOW_H
1328 struct ptr_info_def;
1331 struct tree_ssa_name GTY(())
1333 struct tree_common common;
1335 /* _DECL wrapped by this SSA name. */
1340 /* SSA version number. */
1341 unsigned int version;
1343 /* Pointer attributes used for alias analysis. */
1344 struct ptr_info_def *ptr_info;
1346 /* Value for SSA name used by various passes.
1348 Right now only invariants are allowed to persist beyond a pass in
1349 this field; in the future we will allow VALUE_HANDLEs to persist
1353 /* Auxiliary information stored with the ssa name. */
1354 PTR GTY((skip)) aux;
1357 /* In a PHI_NODE node. */
1358 #define PHI_RESULT_TREE(NODE) PHI_NODE_CHECK (NODE)->phi.result
1359 #define PHI_ARG_DEF_TREE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).def
1361 /* PHI_NODEs for each basic block are chained together in a single linked
1362 list. The head of the list is linked from the block annotation, and
1363 the link to the next PHI is in PHI_CHAIN. */
1364 #define PHI_CHAIN(NODE) TREE_CHAIN (PHI_NODE_CHECK (NODE))
1366 /* Nonzero if the PHI node was rewritten by a previous pass through the
1368 #define PHI_REWRITTEN(NODE) PHI_NODE_CHECK (NODE)->phi.rewritten
1369 #define PHI_NUM_ARGS(NODE) PHI_NODE_CHECK (NODE)->phi.num_args
1370 #define PHI_ARG_CAPACITY(NODE) PHI_NODE_CHECK (NODE)->phi.capacity
1371 #define PHI_ARG_ELT(NODE, I) PHI_NODE_ELT_CHECK (NODE, I)
1372 #define PHI_ARG_EDGE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).e
1373 #define PHI_ARG_NONZERO(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).nonzero
1374 #define PHI_BB(NODE) PHI_NODE_CHECK (NODE)->phi.bb
1375 #define PHI_DF(NODE) PHI_NODE_CHECK (NODE)->phi.df
1379 struct phi_arg_d GTY(())
1382 struct edge_def * GTY((skip (""))) e;
1386 struct tree_phi_node GTY(())
1388 struct tree_common common;
1393 /* Nonzero if the PHI node was rewritten by a previous pass through the
1397 /* Basic block to that the phi node belongs. */
1398 struct basic_block_def *bb;
1400 /* Dataflow information. */
1401 struct dataflow_d *df;
1403 struct phi_arg_d GTY ((length ("((tree)&%h)->phi.capacity"))) a[1];
1407 struct varray_head_tag;
1409 /* In a BLOCK node. */
1410 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1411 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1412 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1413 /* Note: when changing this, make sure to find the places
1414 that use chainon or nreverse. */
1415 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1416 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1417 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1419 /* Nonzero means that this block is prepared to handle exceptions
1420 listed in the BLOCK_VARS slot. */
1421 #define BLOCK_HANDLER_BLOCK(NODE) \
1422 (BLOCK_CHECK (NODE)->block.handler_block_flag)
1424 /* An index number for this block. These values are not guaranteed to
1425 be unique across functions -- whether or not they are depends on
1426 the debugging output format in use. */
1427 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1429 /* If block reordering splits a lexical block into discontiguous
1430 address ranges, we'll make a copy of the original block.
1432 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1433 In that case, we have one source block that has been replicated
1434 (through inlining or unrolling) into many logical blocks, and that
1435 these logical blocks have different physical variables in them.
1437 In this case, we have one logical block split into several
1438 non-contiguous address ranges. Most debug formats can't actually
1439 represent this idea directly, so we fake it by creating multiple
1440 logical blocks with the same variables in them. However, for those
1441 that do support non-contiguous regions, these allow the original
1442 logical block to be reconstructed, along with the set of address
1445 One of the logical block fragments is arbitrarily chosen to be
1446 the ORIGIN. The other fragments will point to the origin via
1447 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1448 be null. The list of fragments will be chained through
1449 BLOCK_FRAGMENT_CHAIN from the origin. */
1451 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1452 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1454 struct tree_block GTY(())
1456 struct tree_common common;
1458 unsigned handler_block_flag : 1;
1459 unsigned abstract_flag : 1;
1460 unsigned block_num : 30;
1465 tree abstract_origin;
1466 tree fragment_origin;
1467 tree fragment_chain;
1470 /* Define fields and accessors for nodes representing data types. */
1472 /* See tree.def for documentation of the use of these fields.
1473 Look at the documentation of the various ..._TYPE tree codes.
1475 Note that the type.values, type.minval, and type.maxval fields are
1476 overloaded and used for different macros in different kinds of types.
1477 Each macro must check to ensure the tree node is of the proper kind of
1478 type. Note also that some of the front-ends also overload these fields,
1479 so they must be checked as well. */
1481 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
1482 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
1483 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
1484 #define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode)
1485 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
1486 #define TYPE_DOMAIN(NODE) (SET_OR_ARRAY_CHECK (NODE)->type.values)
1487 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
1488 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
1489 #define TYPE_ORIG_SIZE_TYPE(NODE) \
1490 (INTEGER_TYPE_CHECK (NODE)->type.values \
1491 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
1492 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
1493 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
1494 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
1495 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
1496 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
1497 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
1498 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
1499 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
1500 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
1501 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
1502 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
1503 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
1504 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
1505 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
1506 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
1507 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
1508 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
1509 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
1510 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
1511 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
1513 /* For a VECTOR_TYPE node, this describes a different type which is emitted
1514 in the debugging output. We use this to describe a vector as a
1515 structure containing an array. */
1516 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
1518 /* For record and union types, information about this type, as a base type
1520 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1522 /* For non record and union types, used in a language-dependent way. */
1523 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1525 /* The (language-specific) typed-based alias set for this type.
1526 Objects whose TYPE_ALIAS_SETs are different cannot alias each
1527 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
1528 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
1529 type can alias objects of any type. */
1530 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
1532 /* Nonzero iff the typed-based alias set for this type has been
1534 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
1536 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
1538 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
1540 /* The alignment necessary for objects of this type.
1541 The value is an int, measured in bits. */
1542 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
1544 /* 1 if the alignment for this type was requested by "aligned" attribute,
1545 0 if it is the default for this type. */
1546 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
1548 /* The alignment for NODE, in bytes. */
1549 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
1551 /* If your language allows you to declare types, and you want debug info
1552 for them, then you need to generate corresponding TYPE_DECL nodes.
1553 These "stub" TYPE_DECL nodes have no name, and simply point at the
1554 type node. You then set the TYPE_STUB_DECL field of the type node
1555 to point back at the TYPE_DECL node. This allows the debug routines
1556 to know that the two nodes represent the same type, so that we only
1557 get one debug info record for them. */
1558 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
1560 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
1561 has BLKmode only because it lacks the alignment requirement for
1563 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
1565 /* In an INTEGER_TYPE, it means the type represents a size. We use
1566 this both for validity checking and to permit optimizations that
1567 are unsafe for other types. Note that the C `size_t' type should
1568 *not* have this flag set. The `size_t' type is simply a typedef
1569 for an ordinary integer type that happens to be the type of an
1570 expression returned by `sizeof'; `size_t' has no special
1571 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
1572 always actual sizes. */
1573 #define TYPE_IS_SIZETYPE(NODE) \
1574 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1576 /* In a FUNCTION_TYPE, indicates that the function returns with the stack
1577 pointer depressed. */
1578 #define TYPE_RETURNS_STACK_DEPRESSED(NODE) \
1579 (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1581 /* Nonzero in a type considered volatile as a whole. */
1582 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->common.volatile_flag)
1584 /* Means this type is const-qualified. */
1585 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->common.readonly_flag)
1587 /* If nonzero, this type is `restrict'-qualified, in the C sense of
1589 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
1591 /* There is a TYPE_QUAL value for each type qualifier. They can be
1592 combined by bitwise-or to form the complete set of qualifiers for a
1595 #define TYPE_UNQUALIFIED 0x0
1596 #define TYPE_QUAL_CONST 0x1
1597 #define TYPE_QUAL_VOLATILE 0x2
1598 #define TYPE_QUAL_RESTRICT 0x4
1600 /* The set of type qualifiers for this type. */
1601 #define TYPE_QUALS(NODE) \
1602 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
1603 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
1604 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
1606 /* These flags are available for each language front end to use internally. */
1607 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
1608 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
1609 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
1610 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
1611 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
1612 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
1613 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
1615 /* Used to keep track of visited nodes in tree traversals. This is set to
1616 0 by copy_node and make_node. */
1617 #define TREE_VISITED(NODE) ((NODE)->common.visited)
1619 /* If set in an ARRAY_TYPE, indicates a string type (for languages
1620 that distinguish string from array of char).
1621 If set in a SET_TYPE, indicates a bitstring type. */
1622 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
1624 /* If non-NULL, this is an upper bound of the size (in bytes) of an
1625 object of the given ARRAY_TYPE. This allows temporaries to be
1627 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
1628 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
1630 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
1631 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
1632 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
1634 /* Indicates that objects of this type must be initialized by calling a
1635 function when they are created. */
1636 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
1637 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
1639 /* Indicates that objects of this type (a UNION_TYPE), should be passed
1640 the same way that the first union alternative would be passed. */
1641 #define TYPE_TRANSPARENT_UNION(NODE) \
1642 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
1644 /* For an ARRAY_TYPE, indicates that it is not permitted to
1645 take the address of a component of the type. */
1646 #define TYPE_NONALIASED_COMPONENT(NODE) \
1647 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
1649 /* Indicated that objects of this type should be laid out in as
1650 compact a way as possible. */
1651 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
1653 /* Used by type_contains_placeholder_p to avoid recomputation.
1654 Values are: 0 (unknown), 1 (false), 2 (true). Never access
1655 this field directly. */
1656 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
1657 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
1661 struct tree_type GTY(())
1663 struct tree_common common;
1670 unsigned int precision : 9;
1671 ENUM_BITFIELD(machine_mode) mode : 7;
1673 unsigned string_flag : 1;
1674 unsigned no_force_blk_flag : 1;
1675 unsigned needs_constructing_flag : 1;
1676 unsigned transparent_union_flag : 1;
1677 unsigned packed_flag : 1;
1678 unsigned restrict_flag : 1;
1679 unsigned contains_placeholder_bits : 2;
1681 unsigned lang_flag_0 : 1;
1682 unsigned lang_flag_1 : 1;
1683 unsigned lang_flag_2 : 1;
1684 unsigned lang_flag_3 : 1;
1685 unsigned lang_flag_4 : 1;
1686 unsigned lang_flag_5 : 1;
1687 unsigned lang_flag_6 : 1;
1688 unsigned user_align : 1;
1693 union tree_type_symtab {
1694 int GTY ((tag ("0"))) address;
1695 char * GTY ((tag ("1"))) pointer;
1696 struct die_struct * GTY ((tag ("2"))) die;
1697 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
1698 descbits ("2"))) symtab;
1706 HOST_WIDE_INT alias_set;
1707 /* Points to a structure whose details depend on the language in use. */
1708 struct lang_type *lang_specific;
1711 /* Define accessor macros for information about type inheritance
1714 A "basetype" means a particular usage of a data type for inheritance
1715 in another type. Each such basetype usage has its own "binfo"
1716 object to describe it. The binfo object is a TREE_VEC node.
1718 Inheritance is represented by the binfo nodes allocated for a
1719 given type. For example, given types C and D, such that D is
1720 inherited by C, 3 binfo nodes will be allocated: one for describing
1721 the binfo properties of C, similarly one for D, and one for
1722 describing the binfo properties of D as a base type for C.
1723 Thus, given a pointer to class C, one can get a pointer to the binfo
1724 of D acting as a basetype for C by looking at C's binfo's basetypes. */
1726 /* BINFO specific flags. */
1728 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
1729 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->common.static_flag)
1731 /* Flags for language dependent use. */
1732 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
1733 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
1734 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
1735 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
1736 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
1737 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
1738 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
1740 /* The actual data type node being inherited in this basetype. */
1741 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
1743 /* The offset where this basetype appears in its containing type.
1744 BINFO_OFFSET slot holds the offset (in bytes)
1745 from the base of the complete object to the base of the part of the
1746 object that is allocated on behalf of this `type'.
1747 This is always 0 except when there is multiple inheritance. */
1749 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
1750 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
1752 /* The virtual function table belonging to this basetype. Virtual
1753 function tables provide a mechanism for run-time method dispatching.
1754 The entries of a virtual function table are language-dependent. */
1756 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
1758 /* The virtual functions in the virtual function table. This is
1759 a TREE_LIST that is used as an initial approximation for building
1760 a virtual function table for this basetype. */
1761 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
1763 /* A vector of binfos for the direct basetypes inherited by this
1766 If this basetype describes type D as inherited in C, and if the
1767 basetypes of D are E and F, then this vector contains binfos for
1768 inheritance of E and F by C. */
1769 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
1771 /* The number of basetypes for NODE. */
1772 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
1774 /* Accessor macro to get to the Nth base binfo of this binfo. */
1775 #define BINFO_BASE_BINFO(NODE,N) \
1776 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
1777 #define BINFO_BASE_ITERATE(NODE,N,B) \
1778 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
1779 #define BINFO_BASE_APPEND(NODE,T) \
1780 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
1782 /* For a BINFO record describing a virtual base class, i.e., one where
1783 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
1784 base. The actual contents are language-dependent. In the C++
1785 front-end this field is an INTEGER_CST giving an offset into the
1786 vtable where the offset to the virtual base can be found. */
1787 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
1789 /* Indicates the accesses this binfo has to its bases. The values are
1790 access_public_node, access_protected_node or access_private_node.
1791 If this array is not present, public access is implied. */
1792 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
1794 #define BINFO_BASE_ACCESS(NODE,N) \
1795 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
1796 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
1797 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
1799 /* The index in the VTT where this subobject's sub-VTT can be found.
1800 NULL_TREE if there is no sub-VTT. */
1801 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
1803 /* The index in the VTT where the vptr for this subobject can be
1804 found. NULL_TREE if there is no secondary vptr in the VTT. */
1805 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
1807 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
1808 inheriting this base for non-virtual bases. For virtual bases it
1809 points either to the binfo for which this is a primary binfo, or to
1810 the binfo of the most derived type. */
1811 #define BINFO_INHERITANCE_CHAIN(NODE) \
1812 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
1814 struct tree_binfo GTY (())
1816 struct tree_common common;
1822 VEC(tree) *base_accesses;
1828 VEC(tree) base_binfos;
1832 /* Define fields and accessors for nodes representing declared names. */
1834 /* Nonzero if DECL represents a variable for the SSA passes. */
1835 #define SSA_VAR_P(DECL) \
1836 (TREE_CODE (DECL) == VAR_DECL \
1837 || TREE_CODE (DECL) == PARM_DECL \
1838 || TREE_CODE (DECL) == RESULT_DECL \
1839 || (TREE_CODE (DECL) == SSA_NAME \
1840 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
1841 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
1842 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL)))
1844 /* This is the name of the object as written by the user.
1845 It is an IDENTIFIER_NODE. */
1846 #define DECL_NAME(NODE) (DECL_CHECK (NODE)->decl.name)
1848 /* The name of the object as the assembler will see it (but before any
1849 translations made by ASM_OUTPUT_LABELREF). Often this is the same
1850 as DECL_NAME. It is an IDENTIFIER_NODE. */
1851 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
1853 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
1854 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
1856 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
1857 (DECL_CHECK (NODE)->decl.assembler_name != NULL_TREE)
1859 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
1860 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
1861 (DECL_CHECK (NODE)->decl.assembler_name = (NAME))
1863 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
1864 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
1865 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
1866 semantics of using this macro, are different than saying:
1868 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
1870 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
1872 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
1873 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
1874 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
1875 DECL_ASSEMBLER_NAME (DECL1)) \
1878 /* Records the section name in a section attribute. Used to pass
1879 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
1880 #define DECL_SECTION_NAME(NODE) (DECL_CHECK (NODE)->decl.section_name)
1882 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
1883 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
1884 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
1885 points to either the FUNCTION_DECL for the containing function,
1886 the RECORD_TYPE or UNION_TYPE for the containing type, or
1887 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
1889 #define DECL_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context)
1890 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.context)
1891 /* In a DECL this is the field where attributes are stored. */
1892 #define DECL_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.attributes)
1893 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
1894 byte containing the bit closest to the beginning of the structure. */
1895 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.arguments)
1896 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
1897 field from DECL_FIELD_OFFSET. */
1898 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.u2.t)
1899 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
1900 if so, the type that was originally specified for it.
1901 TREE_TYPE may have been modified (in finish_struct). */
1902 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->decl.result)
1903 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
1904 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
1906 #define DECL_ARGUMENTS(NODE) (DECL_CHECK (NODE)->decl.arguments)
1907 /* This field is used to reference anything in decl.result and is meant only
1908 for use by the garbage collector. */
1909 #define DECL_RESULT_FLD(NODE) (DECL_CHECK (NODE)->decl.result)
1910 /* In FUNCTION_DECL, holds the decl for the return value. */
1911 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.result)
1912 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
1913 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl.result)
1914 /* In PARM_DECL, holds the type as written (perhaps a function or array). */
1915 #define DECL_ARG_TYPE_AS_WRITTEN(NODE) (PARM_DECL_CHECK (NODE)->decl.result)
1916 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
1917 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
1918 For a VAR_DECL, holds the initial value.
1919 For a PARM_DECL, not used--default
1920 values for parameters are encoded in the type of the function,
1921 not in the PARM_DECL slot.
1923 ??? Need to figure out some way to check this isn't a PARM_DECL. */
1924 #define DECL_INITIAL(NODE) (DECL_CHECK (NODE)->decl.initial)
1925 /* For a PARM_DECL, records the data type used to pass the argument,
1926 which may be different from the type seen in the program. */
1927 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl.initial)
1928 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
1929 if nonzero, indicates that the field occupies the type. */
1930 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->decl.initial)
1931 /* These two fields describe where in the source code the declaration
1932 was. If the declaration appears in several places (as for a C
1933 function that is declared first and then defined later), this
1934 information should refer to the definition. */
1935 #define DECL_SOURCE_LOCATION(NODE) (DECL_CHECK (NODE)->decl.locus)
1936 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
1937 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
1938 #ifdef USE_MAPPED_LOCATION
1939 #define DECL_IS_BUILTIN(DECL) \
1940 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
1942 #define DECL_IS_BUILTIN(DECL) (DECL_SOURCE_LINE(DECL) == 0)
1944 /* Holds the size of the datum, in bits, as a tree expression.
1945 Need not be constant. */
1946 #define DECL_SIZE(NODE) (DECL_CHECK (NODE)->decl.size)
1947 /* Likewise for the size in bytes. */
1948 #define DECL_SIZE_UNIT(NODE) (DECL_CHECK (NODE)->decl.size_unit)
1949 /* Holds the alignment required for the datum, in bits. */
1950 #define DECL_ALIGN(NODE) (DECL_CHECK (NODE)->decl.u1.a.align)
1951 /* The alignment of NODE, in bytes. */
1952 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
1953 /* For FIELD_DECLs, off_align holds the number of low-order bits of
1954 DECL_FIELD_OFFSET which are known to be always zero.
1955 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
1957 #define DECL_OFFSET_ALIGN(NODE) \
1958 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align)
1959 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
1960 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
1961 (FIELD_DECL_CHECK (NODE)->decl.u1.a.off_align = exact_log2 ((X) & -(X)))
1962 /* 1 if the alignment for this type was requested by "aligned" attribute,
1963 0 if it is the default for this type. */
1964 #define DECL_USER_ALIGN(NODE) (DECL_CHECK (NODE)->decl.user_align)
1965 /* Holds the machine mode corresponding to the declaration of a variable or
1966 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
1968 #define DECL_MODE(NODE) (DECL_CHECK (NODE)->decl.mode)
1969 /* Holds the RTL expression for the value of a variable or function.
1970 This value can be evaluated lazily for functions, variables with
1971 static storage duration, and labels. */
1972 #define DECL_RTL(NODE) \
1973 (DECL_CHECK (NODE)->decl.rtl \
1974 ? (NODE)->decl.rtl \
1975 : (make_decl_rtl (NODE), (NODE)->decl.rtl))
1976 /* Set the DECL_RTL for NODE to RTL. */
1977 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
1978 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
1979 #define DECL_RTL_SET_P(NODE) (DECL_CHECK (NODE)->decl.rtl != NULL)
1980 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
1981 NODE1, it will not be set for NODE2; this is a lazy copy. */
1982 #define COPY_DECL_RTL(NODE1, NODE2) \
1983 (DECL_CHECK (NODE2)->decl.rtl = DECL_CHECK (NODE1)->decl.rtl)
1984 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
1985 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
1987 /* For PARM_DECL, holds an RTL for the stack slot or register
1988 where the data was actually passed. */
1989 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->decl.u2.r)
1991 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
1992 that describes the status of this function. */
1993 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u2.f)
1995 /* For FUNCTION_DECL, if it is built-in,
1996 this identifies which built-in operation it is. */
1997 #define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.u1.f)
1999 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
2000 Before the struct containing the FUNCTION_DECL is laid out,
2001 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
2002 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
2003 function. When the class is laid out, this pointer is changed
2004 to an INTEGER_CST node which is suitable for use as an index
2005 into the virtual function table. */
2006 #define DECL_VINDEX(NODE) (DECL_CHECK (NODE)->decl.vindex)
2008 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2009 which this FIELD_DECL is defined. This information is needed when
2010 writing debugging information about vfield and vbase decls for C++. */
2011 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.vindex)
2013 /* Every ..._DECL node gets a unique number. */
2014 #define DECL_UID(NODE) (DECL_CHECK (NODE)->decl.uid)
2016 /* For any sort of a ..._DECL node, this points to the original (abstract)
2017 decl node which this decl is an instance of, or else it is NULL indicating
2018 that this decl is not an instance of some other decl. For example,
2019 in a nested declaration of an inline function, this points back to the
2021 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_CHECK (NODE)->decl.abstract_origin)
2023 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2024 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2025 #define DECL_ORIGIN(NODE) \
2026 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2028 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2029 inline instance of some original (abstract) decl from an inline function;
2030 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2031 nodes can also have their abstract origin set to themselves. */
2032 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2033 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2035 /* Nonzero if a _DECL means that the name of this decl should be ignored
2036 for symbolic debug purposes. */
2037 #define DECL_IGNORED_P(NODE) (DECL_CHECK (NODE)->decl.ignored_flag)
2039 /* Nonzero for a given ..._DECL node means that this node represents an
2040 "abstract instance" of the given declaration (e.g. in the original
2041 declaration of an inline function). When generating symbolic debugging
2042 information, we mustn't try to generate any address information for nodes
2043 marked as "abstract instances" because we don't actually generate
2044 any code or allocate any data space for such instances. */
2045 #define DECL_ABSTRACT(NODE) (DECL_CHECK (NODE)->decl.abstract_flag)
2047 /* Nonzero if a _DECL means that no warnings should be generated just
2048 because this decl is unused. */
2049 #define DECL_IN_SYSTEM_HEADER(NODE) \
2050 (DECL_CHECK (NODE)->decl.in_system_header_flag)
2052 /* Nonzero for a given ..._DECL node means that this node should be
2053 put in .common, if possible. If a DECL_INITIAL is given, and it
2054 is not error_mark_node, then the decl cannot be put in .common. */
2055 #define DECL_COMMON(NODE) (DECL_CHECK (NODE)->decl.common_flag)
2057 /* Language-specific decl information. */
2058 #define DECL_LANG_SPECIFIC(NODE) (DECL_CHECK (NODE)->decl.lang_specific)
2060 /* In a VAR_DECL or FUNCTION_DECL,
2061 nonzero means external reference:
2062 do not allocate storage, and refer to a definition elsewhere. */
2063 #define DECL_EXTERNAL(NODE) (DECL_CHECK (NODE)->decl.external_flag)
2065 /* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
2067 #define DEFAULT_INIT_PRIORITY 65535
2068 #define MAX_INIT_PRIORITY 65535
2069 #define MAX_RESERVED_INIT_PRIORITY 100
2072 nonzero means the detail info about this type is not dumped into stabs.
2073 Instead it will generate cross reference ('x') of names.
2074 This uses the same flag as DECL_EXTERNAL. */
2075 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
2076 (TYPE_DECL_CHECK (NODE)->decl.external_flag)
2078 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2079 #define DECL_REGISTER(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag)
2081 /* In LABEL_DECL nodes, nonzero means that an error message about
2082 jumping into such a binding contour has been printed for this label. */
2083 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl.regdecl_flag)
2085 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2086 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl.regdecl_flag)
2088 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
2089 static chain is not needed. */
2090 #define DECL_NO_STATIC_CHAIN(NODE) \
2091 (FUNCTION_DECL_CHECK (NODE)->decl.regdecl_flag)
2093 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2094 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2096 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2098 Also set in some languages for variables, etc., outside the normal
2099 lexical scope, such as class instance variables. */
2100 #define DECL_NONLOCAL(NODE) (DECL_CHECK (NODE)->decl.nonlocal_flag)
2102 /* Nonzero in a FUNCTION_DECL means this function can be substituted
2103 where it is called. */
2104 #define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inline_flag)
2106 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
2107 such as via the `inline' keyword in C/C++. This flag controls the linkage
2108 semantics of 'inline'; whether or not the function is inlined is
2109 controlled by DECL_INLINE. */
2110 #define DECL_DECLARED_INLINE_P(NODE) \
2111 (FUNCTION_DECL_CHECK (NODE)->decl.declared_inline_flag)
2113 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2114 this variable in a BIND_EXPR. */
2115 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2116 (DECL_CHECK (NODE)->decl.seen_in_bind_expr)
2118 /* In a VAR_DECL, nonzero if the decl is a register variable with
2119 an explicit asm specification. */
2120 #define DECL_HARD_REGISTER(NODE) (DECL_CHECK (NODE)->decl.inline_flag)
2122 /* Value of the decls's visibility attribute */
2123 #define DECL_VISIBILITY(NODE) (DECL_CHECK (NODE)->decl.visibility)
2125 /* Nonzero means that the decl had its visibility specified rather than
2127 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_CHECK (NODE)->decl.visibility_specified)
2129 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
2130 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.uninlinable)
2132 /* In a VAR_DECL, nonzero if the data should be allocated from
2133 thread-local storage. */
2134 #define DECL_THREAD_LOCAL(NODE) (VAR_DECL_CHECK (NODE)->decl.thread_local_flag)
2136 /* In a FUNCTION_DECL, the saved representation of the body of the
2138 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.saved_tree)
2140 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2141 if transformations have made this more complicated than evaluating the
2142 decl itself. This should only be used for debugging; once this field has
2143 been set, the decl itself may not legitimately appear in the function. */
2144 #define DECL_VALUE_EXPR(NODE) \
2145 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl.saved_tree)
2147 /* List of FUNCTION_DECLs inlined into this function's body. */
2148 #define DECL_INLINED_FNS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inlined_fns)
2150 /* Nonzero in a FUNCTION_DECL means this function should be treated
2151 as if it were a malloc, meaning it returns a pointer that is
2153 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.malloc_flag)
2155 /* Nonzero in a FUNCTION_DECL means this function should be treated
2156 as "pure" function (like const function, but may read global memory). */
2157 #define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.pure_flag)
2159 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2161 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl.bit_field_flag)
2163 /* Unused in FUNCTION_DECL. */
2165 /* In a VAR_DECL that's static,
2166 nonzero if the space is in the text section. */
2167 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl.bit_field_flag)
2169 /* In a FUNCTION_DECL, nonzero means a built in function. */
2170 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
2172 /* For a builtin function, identify which part of the compiler defined it. */
2173 #define DECL_BUILT_IN_CLASS(NODE) \
2174 (FUNCTION_DECL_CHECK (NODE)->decl.built_in_class)
2176 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2177 Used in FIELD_DECLs for vtable pointers.
2178 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2179 #define DECL_VIRTUAL_P(NODE) (DECL_CHECK (NODE)->decl.virtual_flag)
2181 /* Used to indicate that the linkage status of this DECL is not yet known,
2182 so it should not be output now. */
2183 #define DECL_DEFER_OUTPUT(NODE) (DECL_CHECK (NODE)->decl.defer_output)
2185 /* Used in PARM_DECLs whose type are unions to indicate that the
2186 argument should be passed in the same way that the first union
2187 alternative would be passed. */
2188 #define DECL_TRANSPARENT_UNION(NODE) \
2189 (PARM_DECL_CHECK (NODE)->decl.transparent_union)
2191 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
2192 at the beginning or end of execution. */
2193 #define DECL_STATIC_CONSTRUCTOR(NODE) \
2194 (FUNCTION_DECL_CHECK (NODE)->decl.static_ctor_flag)
2196 #define DECL_STATIC_DESTRUCTOR(NODE) \
2197 (FUNCTION_DECL_CHECK (NODE)->decl.static_dtor_flag)
2199 /* Used to indicate that this DECL represents a compiler-generated entity. */
2200 #define DECL_ARTIFICIAL(NODE) (DECL_CHECK (NODE)->decl.artificial_flag)
2202 /* Used to indicate that this DECL has weak linkage. */
2203 #define DECL_WEAK(NODE) (DECL_CHECK (NODE)->decl.weak_flag)
2205 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2206 multiple translation units should be merged. */
2207 #define DECL_ONE_ONLY(NODE) (DECL_CHECK (NODE)->decl.transparent_union)
2209 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2210 not be put out unless it is needed in this translation unit.
2211 Entities like this are shared across translation units (like weak
2212 entities), but are guaranteed to be generated by any translation
2213 unit that needs them, and therefore need not be put out anywhere
2214 where they are not needed. DECL_COMDAT is just a hint to the
2215 back-end; it is up to front-ends which set this flag to ensure
2216 that there will never be any harm, other than bloat, in putting out
2217 something which is DECL_COMDAT. */
2218 #define DECL_COMDAT(NODE) (DECL_CHECK (NODE)->decl.comdat_flag)
2220 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
2221 be instrumented with calls to support routines. */
2222 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
2223 (FUNCTION_DECL_CHECK (NODE)->decl.no_instrument_function_entry_exit)
2225 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
2226 disabled in this function. */
2227 #define DECL_NO_LIMIT_STACK(NODE) \
2228 (FUNCTION_DECL_CHECK (NODE)->decl.no_limit_stack)
2230 /* Additional flags for language-specific uses. */
2231 #define DECL_LANG_FLAG_0(NODE) (DECL_CHECK (NODE)->decl.lang_flag_0)
2232 #define DECL_LANG_FLAG_1(NODE) (DECL_CHECK (NODE)->decl.lang_flag_1)
2233 #define DECL_LANG_FLAG_2(NODE) (DECL_CHECK (NODE)->decl.lang_flag_2)
2234 #define DECL_LANG_FLAG_3(NODE) (DECL_CHECK (NODE)->decl.lang_flag_3)
2235 #define DECL_LANG_FLAG_4(NODE) (DECL_CHECK (NODE)->decl.lang_flag_4)
2236 #define DECL_LANG_FLAG_5(NODE) (DECL_CHECK (NODE)->decl.lang_flag_5)
2237 #define DECL_LANG_FLAG_6(NODE) (DECL_CHECK (NODE)->decl.lang_flag_6)
2238 #define DECL_LANG_FLAG_7(NODE) (DECL_CHECK (NODE)->decl.lang_flag_7)
2240 /* Used to indicate that the pointer to this DECL cannot be treated as
2241 an address constant. */
2242 #define DECL_NON_ADDR_CONST_P(NODE) (DECL_CHECK (NODE)->decl.non_addr_const_p)
2244 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2246 #define DECL_NONADDRESSABLE_P(NODE) \
2247 (FIELD_DECL_CHECK (NODE)->decl.non_addressable)
2249 /* Used to indicate an alias set for the memory pointed to by this
2250 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2251 pointer (or reference) type. */
2252 #define DECL_POINTER_ALIAS_SET(NODE) \
2253 (DECL_CHECK (NODE)->decl.pointer_alias_set)
2255 /* Used to store the alias_var for a DECL node. */
2256 #define DECL_PTA_ALIASVAR(NODE) \
2257 (DECL_CHECK (NODE)->decl.alias_var)
2259 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2260 dense, unique within any one function, and may be used to index arrays.
2261 If the value is -1, then no UID has been assigned. */
2262 #define LABEL_DECL_UID(NODE) \
2263 (LABEL_DECL_CHECK (NODE)->decl.pointer_alias_set)
2265 /* Nonzero if an alias set has been assigned to this declaration. */
2266 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2267 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2269 /* Nonzero for a decl which is at file scope. */
2270 #define DECL_FILE_SCOPE_P(EXP) \
2271 (! DECL_CONTEXT (EXP) \
2272 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2274 /* Nonzero for a decl that cgraph has decided should be inlined into
2275 at least one call site. It is not meaningful to look at this
2276 directly; always use cgraph_function_possibly_inlined_p. */
2277 #define DECL_POSSIBLY_INLINED(DECL) \
2278 FUNCTION_DECL_CHECK (DECL)->decl.possibly_inlined
2280 /* Nonzero for a decl that is decorated using attribute used.
2281 This indicates compiler tools that this decl needs to be preserved. */
2282 #define DECL_PRESERVE_P(DECL) \
2283 DECL_CHECK (DECL)->decl.preserve_flag
2285 /* Internal to the gimplifier. Indicates that the value is a formal
2286 temporary controlled by the gimplifier. */
2287 #define DECL_GIMPLE_FORMAL_TEMP_P(DECL) \
2288 DECL_CHECK (DECL)->decl.gimple_formal_temp
2290 /* Enumerate visibility settings. */
2291 #ifndef SYMBOL_VISIBILITY_DEFINED
2292 #define SYMBOL_VISIBILITY_DEFINED
2293 enum symbol_visibility
2296 VISIBILITY_INTERNAL,
2298 VISIBILITY_PROTECTED
2303 union alias_var_def;
2304 struct tree_decl GTY(())
2306 struct tree_common common;
2310 ENUM_BITFIELD(machine_mode) mode : 8;
2312 unsigned external_flag : 1;
2313 unsigned nonlocal_flag : 1;
2314 unsigned regdecl_flag : 1;
2315 unsigned inline_flag : 1;
2316 unsigned bit_field_flag : 1;
2317 unsigned virtual_flag : 1;
2318 unsigned ignored_flag : 1;
2319 unsigned abstract_flag : 1;
2321 unsigned in_system_header_flag : 1;
2322 unsigned common_flag : 1;
2323 unsigned defer_output : 1;
2324 unsigned transparent_union : 1;
2325 unsigned static_ctor_flag : 1;
2326 unsigned static_dtor_flag : 1;
2327 unsigned artificial_flag : 1;
2328 unsigned weak_flag : 1;
2330 unsigned non_addr_const_p : 1;
2331 unsigned no_instrument_function_entry_exit : 1;
2332 unsigned comdat_flag : 1;
2333 unsigned malloc_flag : 1;
2334 unsigned no_limit_stack : 1;
2335 ENUM_BITFIELD(built_in_class) built_in_class : 2;
2336 unsigned pure_flag : 1;
2338 unsigned non_addressable : 1;
2339 unsigned user_align : 1;
2340 unsigned uninlinable : 1;
2341 unsigned thread_local_flag : 1;
2342 unsigned declared_inline_flag : 1;
2343 unsigned seen_in_bind_expr : 1;
2344 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2345 unsigned visibility_specified : 1;
2347 unsigned lang_flag_0 : 1;
2348 unsigned lang_flag_1 : 1;
2349 unsigned lang_flag_2 : 1;
2350 unsigned lang_flag_3 : 1;
2351 unsigned lang_flag_4 : 1;
2352 unsigned lang_flag_5 : 1;
2353 unsigned lang_flag_6 : 1;
2354 unsigned lang_flag_7 : 1;
2356 unsigned possibly_inlined : 1;
2357 unsigned preserve_flag: 1;
2358 unsigned gimple_formal_temp : 1;
2359 /* 13 unused bits. */
2361 union tree_decl_u1 {
2362 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
2363 DECL_FUNCTION_CODE. */
2364 enum built_in_function f;
2365 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this
2366 is used by language-dependent code. */
2368 /* DECL_ALIGN and DECL_OFFSET_ALIGN. (These are not used for
2370 struct tree_decl_u1_a {
2371 unsigned int align : 24;
2372 unsigned int off_align : 8;
2379 tree arguments; /* Also used for DECL_FIELD_OFFSET */
2380 tree result; /* Also used for DECL_BIT_FIELD_TYPE */
2381 tree initial; /* Also used for DECL_QUALIFIER */
2382 tree abstract_origin;
2383 tree assembler_name;
2386 rtx rtl; /* RTL representation for object. */
2388 /* In FUNCTION_DECL, if it is inline, holds the saved insn chain.
2389 In FIELD_DECL, is DECL_FIELD_BIT_OFFSET.
2390 In PARM_DECL, holds an RTL for the stack slot
2391 of register where the data was actually passed.
2392 Used by Chill and Java in LABEL_DECL and by C++ and Java in VAR_DECL. */
2393 union tree_decl_u2 {
2394 struct function * GTY ((tag ("FUNCTION_DECL"))) f;
2395 rtx GTY ((tag ("PARM_DECL"))) r;
2396 tree GTY ((tag ("FIELD_DECL"))) t;
2397 int GTY ((tag ("VAR_DECL"))) i;
2398 } GTY ((desc ("TREE_CODE((tree) &(%0))"))) u2;
2400 /* In a FUNCTION_DECL, this is DECL_SAVED_TREE.
2401 In a VAR_DECL or PARM_DECL, this is DECL_VALUE_EXPR. */
2404 /* In a FUNCTION_DECL, these are function data which is to be kept
2405 as long as FUNCTION_DECL is kept. */
2409 HOST_WIDE_INT pointer_alias_set;
2410 union alias_var_def *GTY ((skip(""))) alias_var;
2411 /* Points to a structure whose details depend on the language in use. */
2412 struct lang_decl *lang_specific;
2416 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
2417 To reduce overhead, the nodes containing the statements are not trees.
2418 This avoids the overhead of tree_common on all linked list elements.
2420 Use the interface in tree-iterator.h to access this node. */
2422 #define STATEMENT_LIST_HEAD(NODE) \
2423 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
2424 #define STATEMENT_LIST_TAIL(NODE) \
2425 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
2427 struct tree_statement_list_node
2428 GTY ((chain_next ("%h.next"), chain_prev ("%h.prev")))
2430 struct tree_statement_list_node *prev;
2431 struct tree_statement_list_node *next;
2435 struct tree_statement_list
2438 struct tree_common common;
2439 struct tree_statement_list_node *head;
2440 struct tree_statement_list_node *tail;
2443 #define VALUE_HANDLE_ID(NODE) \
2444 (VALUE_HANDLE_CHECK (NODE)->value_handle.id)
2446 #define VALUE_HANDLE_EXPR_SET(NODE) \
2447 (VALUE_HANDLE_CHECK (NODE)->value_handle.expr_set)
2449 /* Defined and used in tree-ssa-pre.c. */
2452 struct tree_value_handle GTY(())
2454 struct tree_common common;
2456 /* The set of expressions represented by this handle. */
2457 struct value_set * GTY ((skip)) expr_set;
2459 /* Unique ID for this value handle. IDs are handed out in a
2460 conveniently dense form starting at 0, so that we can make
2461 bitmaps of value handles. */
2465 enum tree_node_structure_enum {
2487 /* Define the overall contents of a tree node.
2488 It may be any of the structures declared above
2489 for various types of node. */
2491 union tree_node GTY ((ptr_alias (union lang_tree_node),
2492 desc ("tree_node_structure (&%h)")))
2494 struct tree_common GTY ((tag ("TS_COMMON"))) common;
2495 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
2496 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
2497 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
2498 struct tree_string GTY ((tag ("TS_STRING"))) string;
2499 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
2500 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
2501 struct tree_decl GTY ((tag ("TS_DECL"))) decl;
2502 struct tree_type GTY ((tag ("TS_TYPE"))) type;
2503 struct tree_list GTY ((tag ("TS_LIST"))) list;
2504 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
2505 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
2506 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
2507 struct tree_phi_node GTY ((tag ("TS_PHI_NODE"))) phi;
2508 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
2509 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
2510 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
2511 struct tree_value_handle GTY ((tag ("TS_VALUE_HANDLE"))) value_handle;
2514 /* Standard named or nameless data types of the C compiler. */
2533 TI_INTEGER_MINUS_ONE,
2550 TI_COMPLEX_INTEGER_TYPE,
2551 TI_COMPLEX_FLOAT_TYPE,
2552 TI_COMPLEX_DOUBLE_TYPE,
2553 TI_COMPLEX_LONG_DOUBLE_TYPE,
2557 TI_LONG_DOUBLE_TYPE,
2561 TI_LONG_DOUBLE_PTR_TYPE,
2562 TI_INTEGER_PTR_TYPE,
2581 extern GTY(()) tree global_trees[TI_MAX];
2583 #define error_mark_node global_trees[TI_ERROR_MARK]
2585 #define intQI_type_node global_trees[TI_INTQI_TYPE]
2586 #define intHI_type_node global_trees[TI_INTHI_TYPE]
2587 #define intSI_type_node global_trees[TI_INTSI_TYPE]
2588 #define intDI_type_node global_trees[TI_INTDI_TYPE]
2589 #define intTI_type_node global_trees[TI_INTTI_TYPE]
2591 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
2592 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
2593 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
2594 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
2595 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
2597 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
2598 #define integer_one_node global_trees[TI_INTEGER_ONE]
2599 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
2600 #define size_zero_node global_trees[TI_SIZE_ZERO]
2601 #define size_one_node global_trees[TI_SIZE_ONE]
2602 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
2603 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
2604 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
2606 /* Base access nodes. */
2607 #define access_public_node global_trees[TI_PUBLIC]
2608 #define access_protected_node global_trees[TI_PROTECTED]
2609 #define access_private_node global_trees[TI_PRIVATE]
2611 #define null_pointer_node global_trees[TI_NULL_POINTER]
2613 #define float_type_node global_trees[TI_FLOAT_TYPE]
2614 #define double_type_node global_trees[TI_DOUBLE_TYPE]
2615 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
2617 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
2618 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
2619 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
2620 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
2622 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
2623 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
2624 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
2625 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
2627 #define void_type_node global_trees[TI_VOID_TYPE]
2628 /* The C type `void *'. */
2629 #define ptr_type_node global_trees[TI_PTR_TYPE]
2630 /* The C type `const void *'. */
2631 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
2632 /* The C type `size_t'. */
2633 #define size_type_node global_trees[TI_SIZE_TYPE]
2634 #define pid_type_node global_trees[TI_PID_TYPE]
2635 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
2636 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
2637 /* The C type `FILE *'. */
2638 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
2640 #define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
2641 #define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
2642 #define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
2644 /* The node that should be placed at the end of a parameter list to
2645 indicate that the function does not take a variable number of
2646 arguments. The TREE_VALUE will be void_type_node and there will be
2647 no TREE_CHAIN. Language-independent code should not assume
2648 anything else about this node. */
2649 #define void_list_node global_trees[TI_VOID_LIST_NODE]
2651 #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
2652 #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
2654 /* An enumeration of the standard C integer types. These must be
2655 ordered so that shorter types appear before longer ones, and so
2656 that signed types appear before unsigned ones, for the correct
2657 functioning of interpret_integer() in c-lex.c. */
2658 enum integer_type_kind
2670 itk_unsigned_long_long,
2674 typedef enum integer_type_kind integer_type_kind;
2676 /* The standard C integer types. Use integer_type_kind to index into
2678 extern GTY(()) tree integer_types[itk_none];
2680 #define char_type_node integer_types[itk_char]
2681 #define signed_char_type_node integer_types[itk_signed_char]
2682 #define unsigned_char_type_node integer_types[itk_unsigned_char]
2683 #define short_integer_type_node integer_types[itk_short]
2684 #define short_unsigned_type_node integer_types[itk_unsigned_short]
2685 #define integer_type_node integer_types[itk_int]
2686 #define unsigned_type_node integer_types[itk_unsigned_int]
2687 #define long_integer_type_node integer_types[itk_long]
2688 #define long_unsigned_type_node integer_types[itk_unsigned_long]
2689 #define long_long_integer_type_node integer_types[itk_long_long]
2690 #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
2692 /* Set to the default thread-local storage (tls) model to use. */
2694 extern enum tls_model flag_tls_default;
2697 /* A pointer-to-function member type looks like:
2704 If __pfn is NULL, it is a NULL pointer-to-member-function.
2706 (Because the vtable is always the first thing in the object, we
2707 don't need its offset.) If the function is virtual, then PFN is
2708 one plus twice the index into the vtable; otherwise, it is just a
2709 pointer to the function.
2711 Unfortunately, using the lowest bit of PFN doesn't work in
2712 architectures that don't impose alignment requirements on function
2713 addresses, or that use the lowest bit to tell one ISA from another,
2714 for example. For such architectures, we use the lowest bit of
2715 DELTA instead of the lowest bit of the PFN, and DELTA will be
2718 enum ptrmemfunc_vbit_where_t
2720 ptrmemfunc_vbit_in_pfn,
2721 ptrmemfunc_vbit_in_delta
2724 #define NULL_TREE (tree) NULL
2726 extern GTY(()) tree frame_base_decl;
2727 extern tree decl_assembler_name (tree);
2729 /* Compute the number of bytes occupied by 'node'. This routine only
2730 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
2732 extern size_t tree_size (tree);
2734 /* Compute the number of bytes occupied by a tree with code CODE. This
2735 function cannot be used for TREE_VEC or PHI_NODE codes, which are of
2737 extern size_t tree_code_size (enum tree_code);
2739 /* Lowest level primitive for allocating a node.
2740 The TREE_CODE is the only argument. Contents are initialized
2741 to zero except for a few of the common fields. */
2743 extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
2744 #define make_node(t) make_node_stat (t MEM_STAT_INFO)
2746 /* Make a copy of a node, with all the same contents. */
2748 extern tree copy_node_stat (tree MEM_STAT_DECL);
2749 #define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
2751 /* Make a copy of a chain of TREE_LIST nodes. */
2753 extern tree copy_list (tree);
2756 extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
2757 #define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
2759 /* Make a TREE_VEC. */
2761 extern tree make_tree_vec_stat (int MEM_STAT_DECL);
2762 #define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
2764 /* Tree nodes for SSA analysis. */
2766 extern tree make_phi_node (tree, int);
2767 extern void init_phinodes (void);
2768 extern void fini_phinodes (void);
2769 extern void release_phi_node (tree);
2770 #ifdef GATHER_STATISTICS
2771 extern void phinodes_print_statistics (void);
2774 extern void init_ssanames (void);
2775 extern void fini_ssanames (void);
2776 extern tree make_ssa_name (tree, tree);
2777 extern tree duplicate_ssa_name (tree, tree);
2778 extern void release_ssa_name (tree);
2779 extern void release_defs (tree);
2780 extern void replace_ssa_name_symbol (tree, tree);
2782 #ifdef GATHER_STATISTICS
2783 extern void ssanames_print_statistics (void);
2786 extern void mark_for_rewrite (tree);
2787 extern void unmark_all_for_rewrite (void);
2788 extern bool marked_for_rewrite_p (tree);
2789 extern bool any_marked_for_rewrite_p (void);
2790 extern struct bitmap_head_def *marked_ssa_names (void);
2793 /* Return the (unique) IDENTIFIER_NODE node for a given name.
2794 The name is supplied as a char *. */
2796 extern tree get_identifier (const char *);
2798 #if GCC_VERSION >= 3000
2799 #define get_identifier(str) \
2800 (__builtin_constant_p (str) \
2801 ? get_identifier_with_length ((str), strlen (str)) \
2802 : get_identifier (str))
2806 /* Identical to get_identifier, except that the length is assumed
2809 extern tree get_identifier_with_length (const char *, size_t);
2811 /* If an identifier with the name TEXT (a null-terminated string) has
2812 previously been referred to, return that node; otherwise return
2815 extern tree maybe_get_identifier (const char *);
2817 /* Construct various types of nodes. */
2819 extern tree build (enum tree_code, tree, ...);
2820 extern tree build_nt (enum tree_code, ...);
2822 #if GCC_VERSION >= 3000 || __STDC_VERSION__ >= 199901L
2823 /* Use preprocessor trickery to map "build" to "buildN" where N is the
2824 expected number of arguments. This is used for both efficiency (no
2825 varargs), and checking (verifying number of passed arguments). */
2826 #define build(code, ...) \
2827 _buildN1(build, _buildC1(__VA_ARGS__))(code, __VA_ARGS__)
2828 #define _buildN1(BASE, X) _buildN2(BASE, X)
2829 #define _buildN2(BASE, X) BASE##X
2830 #define _buildC1(...) _buildC2(__VA_ARGS__,9,8,7,6,5,4,3,2,1,0,0)
2831 #define _buildC2(x,a1,a2,a3,a4,a5,a6,a7,a8,a9,c,...) c
2834 extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
2835 #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
2836 extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
2837 #define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
2838 extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
2839 #define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
2840 extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
2841 #define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
2842 extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
2843 tree MEM_STAT_DECL);
2844 #define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
2846 extern tree build_int_cst (tree, HOST_WIDE_INT);
2847 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
2848 extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
2849 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
2850 extern tree build_vector (tree, tree);
2851 extern tree build_constructor (tree, tree);
2852 extern tree build_real_from_int_cst (tree, tree);
2853 extern tree build_complex (tree, tree, tree);
2854 extern tree build_string (int, const char *);
2855 extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
2856 #define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
2857 extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
2858 #define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
2859 extern tree build_block (tree, tree, tree, tree, tree);
2860 #ifndef USE_MAPPED_LOCATION
2861 extern void annotate_with_file_line (tree, const char *, int);
2862 extern void annotate_with_locus (tree, location_t);
2864 extern tree build_empty_stmt (void);
2866 /* Construct various nodes representing data types. */
2868 extern tree make_signed_type (int);
2869 extern tree make_unsigned_type (int);
2870 extern tree signed_type_for (tree);
2871 extern tree unsigned_type_for (tree);
2872 extern void initialize_sizetypes (bool);
2873 extern void set_sizetype (tree);
2874 extern void fixup_unsigned_type (tree);
2875 extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
2876 extern tree build_pointer_type (tree);
2877 extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
2878 extern tree build_reference_type (tree);
2879 extern tree build_vector_type_for_mode (tree, enum machine_mode);
2880 extern tree build_vector_type (tree innertype, int nunits);
2881 extern tree build_type_no_quals (tree);
2882 extern tree build_index_type (tree);
2883 extern tree build_index_2_type (tree, tree);
2884 extern tree build_array_type (tree, tree);
2885 extern tree build_function_type (tree, tree);
2886 extern tree build_function_type_list (tree, ...);
2887 extern tree build_method_type_directly (tree, tree, tree);
2888 extern tree build_method_type (tree, tree);
2889 extern tree build_offset_type (tree, tree);
2890 extern tree build_complex_type (tree);
2891 extern tree array_type_nelts (tree);
2892 extern bool in_array_bounds_p (tree);
2894 extern tree value_member (tree, tree);
2895 extern tree purpose_member (tree, tree);
2897 extern int attribute_list_equal (tree, tree);
2898 extern int attribute_list_contained (tree, tree);
2899 extern int tree_int_cst_equal (tree, tree);
2900 extern int tree_int_cst_lt (tree, tree);
2901 extern int tree_int_cst_compare (tree, tree);
2902 extern int host_integerp (tree, int);
2903 extern HOST_WIDE_INT tree_low_cst (tree, int);
2904 extern int tree_int_cst_msb (tree);
2905 extern int tree_int_cst_sgn (tree);
2906 extern int tree_expr_nonnegative_p (tree);
2907 extern bool may_negate_without_overflow_p (tree);
2908 extern tree get_inner_array_type (tree);
2910 /* From expmed.c. Since rtl.h is included after tree.h, we can't
2911 put the prototype here. Rtl.h does declare the prototype if
2912 tree.h had been included. */
2914 extern tree make_tree (tree, rtx);
2916 /* Return a type like TTYPE except that its TYPE_ATTRIBUTES
2919 Such modified types already made are recorded so that duplicates
2922 extern tree build_type_attribute_variant (tree, tree);
2923 extern tree build_decl_attribute_variant (tree, tree);
2925 /* Structure describing an attribute and a function to handle it. */
2926 struct attribute_spec
2928 /* The name of the attribute (without any leading or trailing __),
2929 or NULL to mark the end of a table of attributes. */
2930 const char *const name;
2931 /* The minimum length of the list of arguments of the attribute. */
2932 const int min_length;
2933 /* The maximum length of the list of arguments of the attribute
2934 (-1 for no maximum). */
2935 const int max_length;
2936 /* Whether this attribute requires a DECL. If it does, it will be passed
2937 from types of DECLs, function return types and array element types to
2938 the DECLs, function types and array types respectively; but when
2939 applied to a type in any other circumstances, it will be ignored with
2940 a warning. (If greater control is desired for a given attribute,
2941 this should be false, and the flags argument to the handler may be
2942 used to gain greater control in that case.) */
2943 const bool decl_required;
2944 /* Whether this attribute requires a type. If it does, it will be passed
2945 from a DECL to the type of that DECL. */
2946 const bool type_required;
2947 /* Whether this attribute requires a function (or method) type. If it does,
2948 it will be passed from a function pointer type to the target type,
2949 and from a function return type (which is not itself a function
2950 pointer type) to the function type. */
2951 const bool function_type_required;
2952 /* Function to handle this attribute. NODE points to the node to which
2953 the attribute is to be applied. If a DECL, it should be modified in
2954 place; if a TYPE, a copy should be created. NAME is the name of the
2955 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
2956 of the arguments (which may be NULL). FLAGS gives further information
2957 about the context of the attribute. Afterwards, the attributes will
2958 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
2959 unless *NO_ADD_ATTRS is set to true (which should be done on error,
2960 as well as in any other cases when the attributes should not be added
2961 to the DECL or TYPE). Depending on FLAGS, any attributes to be
2962 applied to another type or DECL later may be returned;
2963 otherwise the return value should be NULL_TREE. This pointer may be
2964 NULL if no special handling is required beyond the checks implied
2965 by the rest of this structure. */
2966 tree (*const handler) (tree *node, tree name, tree args,
2967 int flags, bool *no_add_attrs);
2970 /* Flags that may be passed in the third argument of decl_attributes, and
2971 to handler functions for attributes. */
2972 enum attribute_flags
2974 /* The type passed in is the type of a DECL, and any attributes that
2975 should be passed in again to be applied to the DECL rather than the
2976 type should be returned. */
2977 ATTR_FLAG_DECL_NEXT = 1,
2978 /* The type passed in is a function return type, and any attributes that
2979 should be passed in again to be applied to the function type rather
2980 than the return type should be returned. */
2981 ATTR_FLAG_FUNCTION_NEXT = 2,
2982 /* The type passed in is an array element type, and any attributes that
2983 should be passed in again to be applied to the array type rather
2984 than the element type should be returned. */
2985 ATTR_FLAG_ARRAY_NEXT = 4,
2986 /* The type passed in is a structure, union or enumeration type being
2987 created, and should be modified in place. */
2988 ATTR_FLAG_TYPE_IN_PLACE = 8,
2989 /* The attributes are being applied by default to a library function whose
2990 name indicates known behavior, and should be silently ignored if they
2991 are not in fact compatible with the function type. */
2992 ATTR_FLAG_BUILT_IN = 16
2995 /* Default versions of target-overridable functions. */
2997 extern tree merge_decl_attributes (tree, tree);
2998 extern tree merge_type_attributes (tree, tree);
2999 extern void default_register_cpp_builtins (struct cpp_reader *);
3001 /* Return 1 if an attribute and its arguments are valid for a decl or type. */
3003 extern int valid_machine_attribute (tree, tree, tree, tree);
3005 /* Given a tree node and a string, return nonzero if the tree node is
3006 a valid attribute name for the string. */
3008 extern int is_attribute_p (const char *, tree);
3010 /* Given an attribute name and a list of attributes, return the list element
3011 of the attribute or NULL_TREE if not found. */
3013 extern tree lookup_attribute (const char *, tree);
3015 /* Given two attributes lists, return a list of their union. */
3017 extern tree merge_attributes (tree, tree);
3019 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
3020 /* Given two Windows decl attributes lists, possibly including
3021 dllimport, return a list of their union . */
3022 extern tree merge_dllimport_decl_attributes (tree, tree);
3024 /* Handle a "dllimport" or "dllexport" attribute. */
3025 extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
3028 /* Check whether CAND is suitable to be returned from get_qualified_type
3029 (BASE, TYPE_QUALS). */
3031 extern bool check_qualified_type (tree, tree, int);
3033 /* Return a version of the TYPE, qualified as indicated by the
3034 TYPE_QUALS, if one exists. If no qualified version exists yet,
3035 return NULL_TREE. */
3037 extern tree get_qualified_type (tree, int);
3039 /* Like get_qualified_type, but creates the type if it does not
3040 exist. This function never returns NULL_TREE. */
3042 extern tree build_qualified_type (tree, int);
3044 /* Like build_qualified_type, but only deals with the `const' and
3045 `volatile' qualifiers. This interface is retained for backwards
3046 compatibility with the various front-ends; new code should use
3047 build_qualified_type instead. */
3049 #define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
3050 build_qualified_type ((TYPE), \
3051 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
3052 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
3054 /* Make a copy of a type node. */
3056 extern tree build_distinct_type_copy (tree);
3057 extern tree build_variant_type_copy (tree);
3059 /* Finish up a builtin RECORD_TYPE. Give it a name and provide its
3060 fields. Optionally specify an alignment, and then lay it out. */
3062 extern void finish_builtin_struct (tree, const char *,
3065 /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
3066 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
3067 node, does nothing except for the first time. */
3069 extern void layout_type (tree);
3071 /* These functions allow a front-end to perform a manual layout of a
3072 RECORD_TYPE. (For instance, if the placement of subsequent fields
3073 depends on the placement of fields so far.) Begin by calling
3074 start_record_layout. Then, call place_field for each of the
3075 fields. Then, call finish_record_layout. See layout_type for the
3076 default way in which these functions are used. */
3078 typedef struct record_layout_info_s
3080 /* The RECORD_TYPE that we are laying out. */
3082 /* The offset into the record so far, in bytes, not including bits in
3085 /* The last known alignment of SIZE. */
3086 unsigned int offset_align;
3087 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
3089 /* The alignment of the record so far, in bits. */
3090 unsigned int record_align;
3091 /* The alignment of the record so far, ignoring #pragma pack and
3092 __attribute__ ((packed)), in bits. */
3093 unsigned int unpacked_align;
3094 /* The previous field layed out. */
3096 /* The static variables (i.e., class variables, as opposed to
3097 instance variables) encountered in T. */
3098 tree pending_statics;
3099 /* Bits remaining in the current alignment group */
3100 int remaining_in_alignment;
3101 /* True if we've seen a packed field that didn't have normal
3102 alignment anyway. */
3103 int packed_maybe_necessary;
3104 } *record_layout_info;
3106 extern void set_lang_adjust_rli (void (*) (record_layout_info));
3107 extern record_layout_info start_record_layout (tree);
3108 extern tree bit_from_pos (tree, tree);
3109 extern tree byte_from_pos (tree, tree);
3110 extern void pos_from_bit (tree *, tree *, unsigned int, tree);
3111 extern void normalize_offset (tree *, tree *, unsigned int);
3112 extern tree rli_size_unit_so_far (record_layout_info);
3113 extern tree rli_size_so_far (record_layout_info);
3114 extern void normalize_rli (record_layout_info);
3115 extern void place_field (record_layout_info, tree);
3116 extern void compute_record_mode (tree);
3117 extern void finish_record_layout (record_layout_info, int);
3119 /* Given a hashcode and a ..._TYPE node (for which the hashcode was made),
3120 return a canonicalized ..._TYPE node, so that duplicates are not made.
3121 How the hash code is computed is up to the caller, as long as any two
3122 callers that could hash identical-looking type nodes agree. */
3124 extern tree type_hash_canon (unsigned int, tree);
3126 /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node,
3127 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE
3128 fields. Call this only once for any given decl node.
3130 Second argument is the boundary that this field can be assumed to
3131 be starting at (in bits). Zero means it can be assumed aligned
3132 on any boundary that may be needed. */
3134 extern void layout_decl (tree, unsigned);
3136 /* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
3137 a previous call to layout_decl and calls it again. */
3139 extern void relayout_decl (tree);
3141 /* Return the mode for data of a given size SIZE and mode class CLASS.
3142 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
3143 The value is BLKmode if no other mode is found. This is like
3144 mode_for_size, but is passed a tree. */
3146 extern enum machine_mode mode_for_size_tree (tree, enum mode_class, int);
3148 /* Return an expr equal to X but certainly not valid as an lvalue. */
3150 extern tree non_lvalue (tree);
3151 extern tree pedantic_non_lvalue (tree);
3153 extern tree convert (tree, tree);
3154 extern unsigned int expr_align (tree);
3155 extern tree expr_first (tree);
3156 extern tree expr_last (tree);
3157 extern tree expr_only (tree);
3158 extern tree size_in_bytes (tree);
3159 extern HOST_WIDE_INT int_size_in_bytes (tree);
3160 extern tree bit_position (tree);
3161 extern HOST_WIDE_INT int_bit_position (tree);
3162 extern tree byte_position (tree);
3163 extern HOST_WIDE_INT int_byte_position (tree);
3165 /* Define data structures, macros, and functions for handling sizes
3166 and the various types used to represent sizes. */
3170 SIZETYPE, /* Normal representation of sizes in bytes. */
3171 SSIZETYPE, /* Signed representation of sizes in bytes. */
3172 BITSIZETYPE, /* Normal representation of sizes in bits. */
3173 SBITSIZETYPE, /* Signed representation of sizes in bits. */
3176 extern GTY(()) tree sizetype_tab[(int) TYPE_KIND_LAST];
3178 #define sizetype sizetype_tab[(int) SIZETYPE]
3179 #define bitsizetype sizetype_tab[(int) BITSIZETYPE]
3180 #define ssizetype sizetype_tab[(int) SSIZETYPE]
3181 #define sbitsizetype sizetype_tab[(int) SBITSIZETYPE]
3183 extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
3184 extern tree size_binop (enum tree_code, tree, tree);
3185 extern tree size_diffop (tree, tree);
3187 #define size_int(L) size_int_kind (L, SIZETYPE)
3188 #define ssize_int(L) size_int_kind (L, SSIZETYPE)
3189 #define bitsize_int(L) size_int_kind (L, BITSIZETYPE)
3190 #define sbitsize_int(L) size_int_kind (L, SBITSIZETYPE)
3192 extern tree round_up (tree, int);
3193 extern tree round_down (tree, int);
3194 extern tree get_pending_sizes (void);
3195 extern void put_pending_size (tree);
3196 extern void put_pending_sizes (tree);
3198 /* Type for sizes of data-type. */
3200 #define BITS_PER_UNIT_LOG \
3201 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \
3202 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
3203 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
3205 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
3206 extern unsigned int maximum_field_alignment;
3207 /* and its original value in bytes, specified via -fpack-struct=<value>. */
3208 extern unsigned int initial_max_fld_align;
3210 /* If nonzero, the alignment of a bitstring or (power-)set value, in bits. */
3211 extern unsigned int set_alignment;
3213 /* Concatenate two lists (chains of TREE_LIST nodes) X and Y
3214 by making the last node in X point to Y.
3215 Returns X, except if X is 0 returns Y. */
3217 extern tree chainon (tree, tree);
3219 /* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
3221 extern tree tree_cons_stat (tree, tree, tree MEM_STAT_DECL);
3222 #define tree_cons(t,q,w) tree_cons_stat (t,q,w MEM_STAT_INFO)
3224 /* Return the last tree node in a chain. */
3226 extern tree tree_last (tree);
3228 /* Reverse the order of elements in a chain, and return the new head. */
3230 extern tree nreverse (tree);
3232 /* Returns the length of a chain of nodes
3233 (number of chain pointers to follow before reaching a null pointer). */
3235 extern int list_length (tree);
3237 /* Returns the number of FIELD_DECLs in a type. */
3239 extern int fields_length (tree);
3241 /* Given an initializer INIT, return TRUE if INIT is zero or some
3242 aggregate of zeros. Otherwise return FALSE. */
3244 extern bool initializer_zerop (tree);
3246 extern void categorize_ctor_elements (tree, HOST_WIDE_INT *, HOST_WIDE_INT *);
3247 extern HOST_WIDE_INT count_type_elements (tree);
3248 extern int mostly_zeros_p (tree);
3250 /* add_var_to_bind_expr (bind_expr, var) binds var to bind_expr. */
3252 extern void add_var_to_bind_expr (tree, tree);
3254 /* integer_zerop (tree x) is nonzero if X is an integer constant of value 0. */
3256 extern int integer_zerop (tree);
3258 /* integer_onep (tree x) is nonzero if X is an integer constant of value 1. */
3260 extern int integer_onep (tree);
3262 /* integer_all_onesp (tree x) is nonzero if X is an integer constant
3263 all of whose significant bits are 1. */
3265 extern int integer_all_onesp (tree);
3267 /* integer_pow2p (tree x) is nonzero is X is an integer constant with
3268 exactly one bit 1. */
3270 extern int integer_pow2p (tree);
3272 /* integer_nonzerop (tree x) is nonzero if X is an integer constant
3273 with a nonzero value. */
3275 extern int integer_nonzerop (tree);
3277 extern bool zero_p (tree);
3278 extern bool cst_and_fits_in_hwi (tree);
3280 /* staticp (tree x) is nonzero if X is a reference to data allocated
3281 at a fixed address in memory. Returns the outermost data. */
3283 extern tree staticp (tree);
3285 /* save_expr (EXP) returns an expression equivalent to EXP
3286 but it can be used multiple times within context CTX
3287 and only evaluate EXP once. */
3289 extern tree save_expr (tree);
3291 /* Look inside EXPR and into any simple arithmetic operations. Return
3292 the innermost non-arithmetic node. */
3294 extern tree skip_simple_arithmetic (tree);
3296 /* Returns the index of the first non-tree operand for CODE, or the number
3297 of operands if all are trees. */
3299 extern int first_rtl_op (enum tree_code);
3301 /* Return which tree structure is used by T. */
3303 enum tree_node_structure_enum tree_node_structure (tree);
3305 /* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
3306 or offset that depends on a field within a record.
3308 Note that we only allow such expressions within simple arithmetic
3311 extern bool contains_placeholder_p (tree);
3313 /* This macro calls the above function but short-circuits the common
3314 case of a constant to save time. Also check for null. */
3316 #define CONTAINS_PLACEHOLDER_P(EXP) \
3317 ((EXP) != 0 && ! TREE_CONSTANT (EXP) && contains_placeholder_p (EXP))
3319 /* Return 1 if any part of the computation of TYPE involves a PLACEHOLDER_EXPR.
3320 This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and field
3323 extern bool type_contains_placeholder_p (tree);
3325 /* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
3326 return a tree with all occurrences of references to F in a
3327 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP
3328 contains only arithmetic expressions. */
3330 extern tree substitute_in_expr (tree, tree, tree);
3332 /* This macro calls the above function but short-circuits the common
3333 case of a constant to save time and also checks for NULL. */
3335 #define SUBSTITUTE_IN_EXPR(EXP, F, R) \
3336 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) : substitute_in_expr (EXP, F, R))
3338 /* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
3339 for it within OBJ, a tree that is an object or a chain of references. */
3341 extern tree substitute_placeholder_in_expr (tree, tree);
3343 /* This macro calls the above function but short-circuits the common
3344 case of a constant to save time and also checks for NULL. */
3346 #define SUBSTITUTE_PLACEHOLDER_IN_EXPR(EXP, OBJ) \
3347 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) \
3348 : substitute_placeholder_in_expr (EXP, OBJ))
3350 /* variable_size (EXP) is like save_expr (EXP) except that it
3351 is for the special case of something that is part of a
3352 variable size for a data type. It makes special arrangements
3353 to compute the value at the right time when the data type
3354 belongs to a function parameter. */
3356 extern tree variable_size (tree);
3358 /* stabilize_reference (EXP) returns a reference equivalent to EXP
3359 but it can be used multiple times
3360 and only evaluate the subexpressions once. */
3362 extern tree stabilize_reference (tree);
3364 /* Subroutine of stabilize_reference; this is called for subtrees of
3365 references. Any expression with side-effects must be put in a SAVE_EXPR
3366 to ensure that it is only evaluated once. */
3368 extern tree stabilize_reference_1 (tree);
3370 /* Return EXP, stripped of any conversions to wider types
3371 in such a way that the result of converting to type FOR_TYPE
3372 is the same as if EXP were converted to FOR_TYPE.
3373 If FOR_TYPE is 0, it signifies EXP's type. */
3375 extern tree get_unwidened (tree, tree);
3377 /* Return OP or a simpler expression for a narrower value
3378 which can be sign-extended or zero-extended to give back OP.
3379 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
3380 or 0 if the value should be sign-extended. */
3382 extern tree get_narrower (tree, int *);
3384 /* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF,
3385 look for nested component-refs or array-refs at constant positions
3386 and find the ultimate containing object, which is returned. */
3388 extern tree get_inner_reference (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
3389 tree *, enum machine_mode *, int *, int *);
3391 /* Return 1 if T is an expression that get_inner_reference handles. */
3393 extern int handled_component_p (tree);
3395 /* Return a tree of sizetype representing the size, in bytes, of the element
3396 of EXP, an ARRAY_REF. */
3398 extern tree array_ref_element_size (tree);
3400 /* Return a tree representing the lower bound of the array mentioned in
3401 EXP, an ARRAY_REF. */
3403 extern tree array_ref_low_bound (tree);
3405 /* Return a tree representing the upper bound of the array mentioned in
3406 EXP, an ARRAY_REF. */
3408 extern tree array_ref_up_bound (tree);
3410 /* Return a tree representing the offset, in bytes, of the field referenced
3411 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
3413 extern tree component_ref_field_offset (tree);
3415 /* Given a DECL or TYPE, return the scope in which it was declared, or
3416 NUL_TREE if there is no containing scope. */
3418 extern tree get_containing_scope (tree);
3420 /* Return the FUNCTION_DECL which provides this _DECL with its context,
3422 extern tree decl_function_context (tree);
3424 /* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides
3425 this _DECL with its context, or zero if none. */
3426 extern tree decl_type_context (tree);
3428 /* Return 1 if EXPR is the real constant zero. */
3429 extern int real_zerop (tree);
3431 /* Declare commonly used variables for tree structure. */
3433 /* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
3434 Zero means allow extended lvalues. */
3436 extern int pedantic_lvalues;
3438 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
3440 extern GTY(()) tree current_function_decl;
3442 /* Nonzero means a FUNC_BEGIN label was emitted. */
3443 extern GTY(()) const char * current_function_func_begin_label;
3446 extern unsigned crc32_string (unsigned, const char *);
3447 extern void clean_symbol_name (char *);
3448 extern tree get_file_function_name_long (const char *);
3449 extern tree get_set_constructor_bits (tree, char *, int);
3450 extern tree get_set_constructor_bytes (tree, unsigned char *, int);
3451 extern tree get_callee_fndecl (tree);
3452 extern void change_decl_assembler_name (tree, tree);
3453 extern int type_num_arguments (tree);
3454 extern bool associative_tree_code (enum tree_code);
3455 extern bool commutative_tree_code (enum tree_code);
3460 extern void expand_expr_stmt (tree);
3461 extern void expand_expr_stmt_value (tree, int, int);
3462 extern int warn_if_unused_value (tree, location_t);
3463 extern void expand_decl_init (tree);
3464 extern void expand_label (tree);
3465 extern void expand_goto (tree);
3466 extern void expand_asm (tree, int);
3468 extern rtx expand_stack_save (void);
3469 extern void expand_stack_restore (tree);
3470 extern void expand_return (tree);
3471 extern int is_body_block (tree);
3474 extern void using_eh_for_cleanups (void);
3476 /* In fold-const.c */
3478 /* Fold constants as much as possible in an expression.
3479 Returns the simplified expression.
3480 Acts only on the top level of the expression;
3481 if the argument itself cannot be simplified, its
3482 subexpressions are not changed. */
3484 extern tree fold (tree);
3485 extern tree fold_initializer (tree);
3486 extern tree fold_convert (tree, tree);
3487 extern tree fold_single_bit_test (enum tree_code, tree, tree, tree);
3488 extern tree fold_ignored_result (tree);
3489 extern tree fold_abs_const (tree, tree);
3491 extern tree force_fit_type (tree, int, bool, bool);
3493 extern int add_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3494 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3495 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3496 extern int neg_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3497 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3498 extern int mul_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3499 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3500 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3501 extern void lshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3502 HOST_WIDE_INT, unsigned int,
3503 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
3504 extern void rshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3505 HOST_WIDE_INT, unsigned int,
3506 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
3507 extern void lrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3508 HOST_WIDE_INT, unsigned int,
3509 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3510 extern void rrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
3511 HOST_WIDE_INT, unsigned int,
3512 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
3514 extern int div_and_round_double (enum tree_code, int, unsigned HOST_WIDE_INT,
3515 HOST_WIDE_INT, unsigned HOST_WIDE_INT,
3516 HOST_WIDE_INT, unsigned HOST_WIDE_INT *,
3517 HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
3520 enum operand_equal_flag
3526 extern int operand_equal_p (tree, tree, unsigned int);
3528 extern tree omit_one_operand (tree, tree, tree);
3529 extern tree omit_two_operands (tree, tree, tree, tree);
3530 extern tree invert_truthvalue (tree);
3531 extern tree nondestructive_fold_unary_to_constant (enum tree_code, tree, tree);
3532 extern tree nondestructive_fold_binary_to_constant (enum tree_code, tree, tree, tree);
3533 extern tree fold_read_from_constant_string (tree);
3534 extern tree int_const_binop (enum tree_code, tree, tree, int);
3535 extern tree build_fold_addr_expr (tree);
3536 extern tree build_fold_addr_expr_with_type (tree, tree);
3537 extern tree build_fold_indirect_ref (tree);
3538 extern tree constant_boolean_node (int, tree);
3540 extern bool tree_swap_operands_p (tree, tree, bool);
3541 extern enum tree_code swap_tree_comparison (enum tree_code);
3543 extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
3546 extern tree fold_builtin (tree, bool);
3547 extern tree fold_builtin_fputs (tree, bool, bool, tree);
3548 extern tree fold_builtin_strcpy (tree, tree);
3549 extern tree fold_builtin_strncpy (tree, tree);
3550 extern enum built_in_function builtin_mathfn_code (tree);
3551 extern tree build_function_call_expr (tree, tree);
3552 extern tree mathfn_built_in (tree, enum built_in_function fn);
3553 extern tree strip_float_extensions (tree);
3554 extern tree c_strlen (tree, int);
3555 extern tree std_gimplify_va_arg_expr (tree, tree, tree *, tree *);
3556 extern tree build_va_arg_indirect_ref (tree);
3559 extern tree strip_float_extensions (tree);
3562 extern void record_component_aliases (tree);
3563 extern HOST_WIDE_INT get_alias_set (tree);
3564 extern int alias_sets_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
3565 extern int alias_sets_might_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
3566 extern int objects_must_conflict_p (tree, tree);
3569 extern int really_constant_p (tree);
3570 extern int int_fits_type_p (tree, tree);
3571 extern bool variably_modified_type_p (tree, tree);
3572 extern int tree_log2 (tree);
3573 extern int tree_floor_log2 (tree);
3574 extern int simple_cst_equal (tree, tree);
3575 extern unsigned int iterative_hash_expr (tree, unsigned int);
3576 extern int compare_tree_int (tree, unsigned HOST_WIDE_INT);
3577 extern int type_list_equal (tree, tree);
3578 extern int chain_member (tree, tree);
3579 extern tree type_hash_lookup (unsigned int, tree);
3580 extern void type_hash_add (unsigned int, tree);
3581 extern int simple_cst_list_equal (tree, tree);
3582 extern void dump_tree_statistics (void);
3583 extern void expand_function_end (void);
3584 extern void expand_function_start (tree);
3585 extern void expand_pending_sizes (tree);
3586 extern void recompute_tree_invarant_for_addr_expr (tree);
3587 extern bool is_global_var (tree t);
3588 extern bool needs_to_live_in_memory (tree);
3589 extern tree reconstruct_complex_type (tree, tree);
3591 extern int real_onep (tree);
3592 extern int real_twop (tree);
3593 extern int real_minus_onep (tree);
3594 extern void init_ttree (void);
3595 extern void build_common_tree_nodes (bool, bool);
3596 extern void build_common_tree_nodes_2 (int);
3597 extern tree build_nonstandard_integer_type (unsigned HOST_WIDE_INT, int);
3598 extern tree build_range_type (tree, tree, tree);
3599 extern HOST_WIDE_INT int_cst_value (tree);
3600 extern tree tree_fold_gcd (tree, tree);
3601 extern tree build_addr (tree);
3603 extern bool fields_compatible_p (tree, tree);
3604 extern tree find_compatible_field (tree, tree);
3607 extern void expand_main_function (void);
3608 extern void init_dummy_function_start (void);
3609 extern void expand_dummy_function_end (void);
3610 extern void init_function_for_compilation (void);
3611 extern void allocate_struct_function (tree);
3612 extern void init_function_start (tree);
3613 extern bool use_register_for_decl (tree);
3614 extern void assign_parms (tree);
3615 extern void setjmp_vars_warning (tree);
3616 extern void setjmp_args_warning (void);
3617 extern void init_temp_slots (void);
3618 extern void combine_temp_slots (void);
3619 extern void free_temp_slots (void);
3620 extern void pop_temp_slots (void);
3621 extern void push_temp_slots (void);
3622 extern void preserve_temp_slots (rtx);
3623 extern void preserve_rtl_expr_temps (tree);
3624 extern int aggregate_value_p (tree, tree);
3625 extern void push_function_context (void);
3626 extern void pop_function_context (void);
3627 extern void push_function_context_to (tree);
3628 extern void pop_function_context_from (tree);
3630 /* In print-rtl.c */
3632 extern void print_rtl (FILE *, rtx);
3635 /* In print-tree.c */
3636 extern void debug_tree (tree);
3638 extern void print_node (FILE *, const char *, tree, int);
3639 extern void print_node_brief (FILE *, const char *, tree, int);
3640 extern void indent_to (FILE *, int);
3643 /* In tree-inline.c: */
3644 extern bool debug_find_tree (tree, tree);
3645 /* This is in tree-inline.c since the routine uses
3646 data structures from the inliner. */
3647 extern tree unsave_expr_now (tree);
3650 extern rtx expand_builtin_return_addr (enum built_in_function, int, rtx);
3651 extern void check_max_integer_computation_mode (tree);
3654 extern rtx emit_line_note (location_t);
3658 /* Nonzero if this is a call to a `const' function. */
3660 /* Nonzero if this is a call to a `volatile' function. */
3661 #define ECF_NORETURN 2
3662 /* Nonzero if this is a call to malloc or a related function. */
3663 #define ECF_MALLOC 4
3664 /* Nonzero if it is plausible that this is a call to alloca. */
3665 #define ECF_MAY_BE_ALLOCA 8
3666 /* Nonzero if this is a call to a function that won't throw an exception. */
3667 #define ECF_NOTHROW 16
3668 /* Nonzero if this is a call to setjmp or a related function. */
3669 #define ECF_RETURNS_TWICE 32
3670 /* Nonzero if this is a call to `longjmp'. */
3671 #define ECF_LONGJMP 64
3672 /* Nonzero if this is a syscall that makes a new process in the image of
3674 #define ECF_SIBCALL 128
3675 /* Nonzero if this is a call to "pure" function (like const function,
3676 but may read memory. */
3677 #define ECF_PURE 256
3678 /* Nonzero if this is a call to a function that returns with the stack
3679 pointer depressed. */
3680 #define ECF_SP_DEPRESSED 512
3681 /* Nonzero if this call is known to always return. */
3682 #define ECF_ALWAYS_RETURN 1024
3683 /* Create libcall block around the call. */
3684 #define ECF_LIBCALL_BLOCK 2048
3686 extern int flags_from_decl_or_type (tree);
3687 extern int call_expr_flags (tree);
3689 extern int setjmp_call_p (tree);
3690 extern bool alloca_call_p (tree);
3691 extern bool must_pass_in_stack_var_size (enum machine_mode, tree);
3692 extern bool must_pass_in_stack_var_size_or_pad (enum machine_mode, tree);
3696 /* Process the attributes listed in ATTRIBUTES and install them in *NODE,
3697 which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
3698 it should be modified in place; if a TYPE, a copy should be created
3699 unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
3700 information, in the form of a bitwise OR of flags in enum attribute_flags
3701 from tree.h. Depending on these flags, some attributes may be
3702 returned to be applied at a later stage (for example, to apply
3703 a decl attribute to the declaration rather than to its type). */
3704 extern tree decl_attributes (tree *, tree, int);
3706 /* In integrate.c */
3707 extern void set_decl_abstract_flags (tree, int);
3708 extern void set_decl_origin_self (tree);
3710 /* In stor-layout.c */
3711 extern void set_min_and_max_values_for_integral_type (tree, int, bool);
3712 extern void fixup_signed_type (tree);
3713 extern void internal_reference_types (void);
3714 extern unsigned int update_alignment_for_field (record_layout_info, tree,
3717 extern void make_decl_rtl (tree);
3718 extern void make_decl_one_only (tree);
3719 extern int supports_one_only (void);
3720 extern void variable_section (tree, int);
3721 enum tls_model decl_tls_model (tree);
3722 extern void resolve_unique_section (tree, int, int);
3723 extern void mark_referenced (tree);
3724 extern void mark_decl_referenced (tree);
3725 extern void notice_global_symbol (tree);
3726 extern void set_user_assembler_name (tree, const char *);
3729 extern void expand_computed_goto (tree);
3730 extern bool parse_output_constraint (const char **, int, int, int,
3731 bool *, bool *, bool *);
3732 extern bool parse_input_constraint (const char **, int, int, int, int,
3733 const char * const *, bool *, bool *);
3734 extern void expand_asm_operands (tree, tree, tree, tree, int, location_t);
3735 extern void expand_asm_expr (tree);
3736 extern bool asm_op_is_mem_input (tree, tree);
3737 extern tree resolve_asm_operand_names (tree, tree, tree);
3738 extern void expand_case (tree);
3739 extern void expand_decl (tree);
3740 extern void expand_anon_union_decl (tree, tree, tree);
3742 /* In gimplify.c. */
3743 extern tree create_artificial_label (void);
3744 extern void gimplify_function_tree (tree);
3745 extern const char *get_name (tree);
3746 extern tree unshare_expr (tree);
3747 extern void sort_case_labels (tree);
3749 /* If KIND=='I', return a suitable global initializer (constructor) name.
3750 If KIND=='D', return a suitable global clean-up (destructor) name. */
3751 extern tree get_file_function_name (int);
3753 /* Interface of the DWARF2 unwind info support. */
3755 /* Generate a new label for the CFI info to refer to. */
3757 extern char *dwarf2out_cfi_label (void);
3759 /* Entry point to update the canonical frame address (CFA). */
3761 extern void dwarf2out_def_cfa (const char *, unsigned, HOST_WIDE_INT);
3763 /* Add the CFI for saving a register window. */
3765 extern void dwarf2out_window_save (const char *);
3767 /* Add a CFI to update the running total of the size of arguments pushed
3770 extern void dwarf2out_args_size (const char *, HOST_WIDE_INT);
3772 /* Entry point for saving a register to the stack. */
3774 extern void dwarf2out_reg_save (const char *, unsigned, HOST_WIDE_INT);
3776 /* Entry point for saving the return address in the stack. */
3778 extern void dwarf2out_return_save (const char *, HOST_WIDE_INT);
3780 /* Entry point for saving the return address in a register. */
3782 extern void dwarf2out_return_reg (const char *, unsigned);
3784 /* In tree-inline.c */
3786 /* The type of a callback function for walking over tree structure. */
3788 typedef tree (*walk_tree_fn) (tree *, int *, void *);
3789 extern tree walk_tree (tree*, walk_tree_fn, void*, void*);
3790 extern tree walk_tree_without_duplicates (tree*, walk_tree_fn, void*);
3792 /* In tree-dump.c */
3794 /* Different tree dump places. When you add new tree dump places,
3795 extend the DUMP_FILES array in tree-dump.c. */
3796 enum tree_dump_index
3798 TDI_none, /* No dump */
3799 TDI_tu, /* dump the whole translation unit. */
3800 TDI_class, /* dump class hierarchy. */
3801 TDI_original, /* dump each function before optimizing it */
3802 TDI_generic, /* dump each function after genericizing it */
3803 TDI_nested, /* dump each function after unnesting it */
3804 TDI_inlined, /* dump each function after inlining
3806 TDI_vcg, /* create a VCG graph file for each
3807 function's flowgraph. */
3808 TDI_tree_all, /* enable all the GENERIC/GIMPLE dumps. */
3809 TDI_rtl_all, /* enable all the RTL dumps. */
3810 TDI_ipa_all, /* enable all the IPA dumps. */
3812 TDI_cgraph, /* dump function call graph. */
3814 DFI_MIN, /* For now, RTL dumps are placed here. */
3815 DFI_sibling = DFI_MIN,
3845 DFI_branch_target_load,
3855 /* Bit masks to control dumping. Not all values are applicable to
3856 all dumps. Add new ones at the end. When you define new
3857 values, extend the DUMP_OPTIONS array in tree-dump.c */
3858 #define TDF_ADDRESS (1 << 0) /* dump node addresses */
3859 #define TDF_SLIM (1 << 1) /* don't go wild following links */
3860 #define TDF_RAW (1 << 2) /* don't unparse the function */
3861 #define TDF_DETAILS (1 << 3) /* show more detailed info about
3863 #define TDF_STATS (1 << 4) /* dump various statistics about
3865 #define TDF_BLOCKS (1 << 5) /* display basic block boundaries */
3866 #define TDF_VOPS (1 << 6) /* display virtual operands */
3867 #define TDF_LINENO (1 << 7) /* display statement line numbers */
3868 #define TDF_UID (1 << 8) /* display decl UIDs */
3870 #define TDF_TREE (1 << 9) /* is a tree dump */
3871 #define TDF_RTL (1 << 10) /* is a RTL dump */
3872 #define TDF_IPA (1 << 11) /* is an IPA dump */
3874 typedef struct dump_info *dump_info_p;
3876 extern char *get_dump_file_name (enum tree_dump_index);
3877 extern int dump_flag (dump_info_p, int, tree);
3878 extern int dump_enabled_p (enum tree_dump_index);
3879 extern int dump_initialized_p (enum tree_dump_index);
3880 extern FILE *dump_begin (enum tree_dump_index, int *);
3881 extern void dump_end (enum tree_dump_index, FILE *);
3882 extern void dump_node (tree, int, FILE *);
3883 extern int dump_switch_p (const char *);
3884 extern const char *dump_flag_name (enum tree_dump_index);
3885 /* Assign the RTX to declaration. */
3887 extern void set_decl_rtl (tree, rtx);
3888 extern void set_decl_incoming_rtl (tree, rtx);
3890 /* Enum and arrays used for tree allocation stats.
3891 Keep in sync with tree.c:tree_node_kind_names. */
3914 extern int tree_node_counts[];
3915 extern int tree_node_sizes[];
3917 /* True if we are in gimple form and the actions of the folders need to
3918 be restricted. False if we are not in gimple form and folding is not
3919 restricted to creating gimple expressions. */
3920 extern bool in_gimple_form;
3922 /* In tree-ssa-loop-niter.c. */
3923 tree lower_bound_in_type (tree, tree);
3924 tree upper_bound_in_type (tree, tree);
3926 /* In tree-ssa-threadupdate.c. */
3927 extern bool thread_through_all_blocks (void);
3929 /* In tree-gimple.c. */
3930 extern tree get_base_address (tree t);
3932 #endif /* GCC_TREE_H */
OSDN Git Service
