1 /* Definitions for c-common.c.
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 #ifndef GCC_C_COMMON_H
21 #define GCC_C_COMMON_H
23 #include "splay-tree.h"
28 /* In order for the format checking to accept the C frontend
29 diagnostic framework extensions, you must include this file before
30 diagnostic-core.h, not after. The C front end formats are a subset of those
31 for C++, so they are the appropriate set to use in common code;
32 cp-tree.h overrides this for C++. */
33 #if defined(GCC_DIAGNOSTIC_CORE_H)
35 In order for the format checking to accept the C front end diagnostic \
36 framework extensions, you must include this file before diagnostic-core.h \
39 #ifndef GCC_DIAG_STYLE
40 #define GCC_DIAG_STYLE __gcc_cdiag__
42 #include "diagnostic-core.h"
44 /* Usage of TREE_LANG_FLAG_?:
45 0: IDENTIFIER_MARKED (used by search routines).
46 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
47 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
48 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
49 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
51 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
55 /* Reserved identifiers. This is the union of all the keywords for C,
56 C++, and Objective-C. All the type modifiers have to be in one
57 block at the beginning, because they are used as mask bits. There
58 are 28 type modifiers; if we add many more we will have to redesign
59 the mask mechanism. */
64 /* C, in empirical order of frequency. */
66 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
67 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
68 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
69 RID_NORETURN, RID_ATOMIC,
72 RID_COMPLEX, RID_THREAD, RID_SAT,
75 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
77 /* ObjC ("PQ" reserved words - they do not appear after a '@' and
78 are keywords only in specific contexts) */
79 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
81 /* ObjC ("PATTR" reserved words - they do not appear after a '@'
82 and are keywords only as property attributes) */
83 RID_GETTER, RID_SETTER,
84 RID_READONLY, RID_READWRITE,
85 RID_ASSIGN, RID_RETAIN, RID_COPY,
88 /* C (reserved and imaginary types not implemented, so any use is a
93 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
95 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
96 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
97 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
101 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
102 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
103 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
104 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
105 RID_FRACT, RID_ACCUM, RID_AUTO_TYPE,
108 RID_ALIGNAS, RID_GENERIC,
110 /* This means to warn that this is a C++ keyword, and then treat it
111 as a normal identifier. */
114 /* GNU transactional memory extension */
115 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
117 /* Too many ways of getting the name of a function as a string */
118 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
120 /* C++ (some of these are keywords in Objective-C as well, but only
121 if they appear after a '@') */
122 RID_BOOL, RID_WCHAR, RID_CLASS,
123 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
124 RID_TEMPLATE, RID_NULL, RID_CATCH,
125 RID_DELETE, RID_FALSE, RID_NAMESPACE,
126 RID_NEW, RID_OFFSETOF, RID_OPERATOR,
127 RID_THIS, RID_THROW, RID_TRUE,
128 RID_TRY, RID_TYPENAME, RID_TYPEID,
129 RID_USING, RID_CHAR16, RID_CHAR32,
132 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
135 RID_BASES, RID_DIRECT_BASES,
136 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR,
137 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN,
138 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY,
139 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR,
140 RID_IS_ABSTRACT, RID_IS_BASE_OF,
141 RID_IS_CLASS, RID_IS_CONVERTIBLE_TO,
142 RID_IS_EMPTY, RID_IS_ENUM,
143 RID_IS_FINAL, RID_IS_LITERAL_TYPE,
144 RID_IS_POD, RID_IS_POLYMORPHIC,
145 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL,
146 RID_IS_UNION, RID_UNDERLYING_TYPE,
149 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
151 /* Cilk Plus keywords. */
152 RID_CILK_SPAWN, RID_CILK_SYNC,
154 /* Objective-C ("AT" reserved words - they are only keywords when
156 RID_AT_ENCODE, RID_AT_END,
157 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
158 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
159 RID_AT_PROTOCOL, RID_AT_SELECTOR,
160 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
161 RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
162 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
163 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
165 RID_AT_IMPLEMENTATION,
167 /* Named address support, mapping the keyword to a particular named address
168 number. Named address space 0 is reserved for the generic address. If
169 there are more than 254 named addresses, the addr_space_t type will need
170 to be grown from an unsigned char to unsigned short. */
171 RID_ADDR_SPACE_0, /* generic address */
188 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
189 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
193 RID_FIRST_MODIFIER = RID_STATIC,
194 RID_LAST_MODIFIER = RID_ONEWAY,
196 RID_FIRST_CXX0X = RID_CONSTEXPR,
197 RID_LAST_CXX0X = RID_STATIC_ASSERT,
198 RID_FIRST_AT = RID_AT_ENCODE,
199 RID_LAST_AT = RID_AT_IMPLEMENTATION,
200 RID_FIRST_PQ = RID_IN,
201 RID_LAST_PQ = RID_ONEWAY,
202 RID_FIRST_PATTR = RID_GETTER,
203 RID_LAST_PATTR = RID_NONATOMIC
206 #define OBJC_IS_AT_KEYWORD(rid) \
207 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
208 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
210 #define OBJC_IS_PQ_KEYWORD(rid) \
211 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
212 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
214 #define OBJC_IS_PATTR_KEYWORD(rid) \
215 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
216 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)
218 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
219 'class') which are shared in a subtle way between Objective-C and
220 C++. When the lexer is lexing in Objective-C/Objective-C++, if it
221 finds '@' followed by one of these identifiers (eg, '@class'), it
222 recognizes the whole as an Objective-C keyword. If the identifier
223 is found elsewhere, it follows the rules of the C/C++ language.
225 #define OBJC_IS_CXX_KEYWORD(rid) \
227 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
228 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
230 /* The elements of `ridpointers' are identifier nodes for the reserved
231 type names and storage classes. It is indexed by a RID_... value. */
232 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
234 /* Standard named or nameless data types of the C compiler. */
241 CTI_UNDERLYING_WCHAR_TYPE,
243 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
244 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
247 CTI_WIDEST_INT_LIT_TYPE,
248 CTI_WIDEST_UINT_LIT_TYPE,
250 /* Types for <stdint.h>, that may not be defined on all
262 CTI_INT_LEAST16_TYPE,
263 CTI_INT_LEAST32_TYPE,
264 CTI_INT_LEAST64_TYPE,
265 CTI_UINT_LEAST8_TYPE,
266 CTI_UINT_LEAST16_TYPE,
267 CTI_UINT_LEAST32_TYPE,
268 CTI_UINT_LEAST64_TYPE,
274 CTI_UINT_FAST16_TYPE,
275 CTI_UINT_FAST32_TYPE,
276 CTI_UINT_FAST64_TYPE,
281 CTI_CHAR16_ARRAY_TYPE,
282 CTI_CHAR32_ARRAY_TYPE,
283 CTI_WCHAR_ARRAY_TYPE,
285 CTI_CONST_STRING_TYPE,
287 /* Type for boolean expressions (bool in C++, int in C). */
290 CTI_TRUTHVALUE_FALSE,
292 CTI_DEFAULT_FUNCTION_TYPE,
294 /* These are not types, but we have to look them up all the time. */
295 CTI_FUNCTION_NAME_DECL,
296 CTI_PRETTY_FUNCTION_NAME_DECL,
297 CTI_C99_FUNCTION_NAME_DECL,
298 CTI_SAVED_FUNCTION_NAME_DECLS,
307 #define C_CPP_HASHNODE(id) \
308 (&(((struct c_common_identifier *) (id))->node))
309 #define C_RID_CODE(id) \
310 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
311 #define C_SET_RID_CODE(id, code) \
312 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
314 /* Identifier part common to the C front ends. Inherits from
315 tree_identifier, despite appearances. */
316 struct GTY(()) c_common_identifier {
317 struct tree_common common;
318 struct cpp_hashnode node;
321 /* An entry in the reserved keyword table. */
323 struct c_common_resword
325 const char *const word;
326 ENUM_BITFIELD(rid) const rid : 16;
327 const unsigned int disable : 16;
330 /* Extra cpp_ttype values for C++. */
332 /* A token type for keywords, as opposed to ordinary identifiers. */
333 #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1))
335 /* A token type for template-ids. If a template-id is processed while
336 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
337 the value of the CPP_TEMPLATE_ID is whatever was returned by
338 cp_parser_template_id. */
339 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
341 /* A token type for nested-name-specifiers. If a
342 nested-name-specifier is processed while parsing tentatively, it is
343 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
344 CPP_NESTED_NAME_SPECIFIER is whatever was returned by
345 cp_parser_nested_name_specifier_opt. */
346 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
348 /* A token type for pre-parsed C++0x decltype. */
349 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
351 /* The number of token types, including C++-specific ones. */
352 #define N_CP_TTYPES ((int) (CPP_DECLTYPE + 1))
354 /* Disable mask. Keywords are disabled if (reswords[i].disable &
355 mask) is _true_. Thus for keywords which are present in all
356 languages the disable field is zero. */
358 #define D_CONLY 0x001 /* C only (not in C++). */
359 #define D_CXXONLY 0x002 /* C++ only (not in C). */
360 #define D_C99 0x004 /* In C, C99 only. */
361 #define D_CXX0X 0x008 /* In C++, C++0X only. */
362 #define D_EXT 0x010 /* GCC extension. */
363 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */
364 #define D_ASM 0x040 /* Disabled by -fno-asm. */
365 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */
366 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */
367 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */
369 /* The reserved keyword table. */
370 extern const struct c_common_resword c_common_reswords[];
372 /* The number of items in the reserved keyword table. */
373 extern const unsigned int num_c_common_reswords;
375 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
376 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
377 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
378 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
379 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
380 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
381 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
382 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
383 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
384 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
385 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
387 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
388 #define int8_type_node c_global_trees[CTI_INT8_TYPE]
389 #define int16_type_node c_global_trees[CTI_INT16_TYPE]
390 #define int32_type_node c_global_trees[CTI_INT32_TYPE]
391 #define int64_type_node c_global_trees[CTI_INT64_TYPE]
392 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
393 #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
394 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
395 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
396 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
397 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
398 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
399 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
400 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
401 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
402 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
403 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
404 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
405 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
406 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
407 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
408 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
409 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
410 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
411 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
412 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
413 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
415 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
416 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
417 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
419 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
420 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
421 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
422 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
423 #define string_type_node c_global_trees[CTI_STRING_TYPE]
424 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
426 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
428 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
429 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
430 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
431 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
433 /* A node for `((void) 0)'. */
434 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
436 /* The node for C++ `__null'. */
437 #define null_node c_global_trees[CTI_NULL]
439 extern GTY(()) tree c_global_trees[CTI_MAX];
441 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a
442 tree for size reasons. */
443 struct GTY((variable_size)) sorted_fields_type {
445 tree GTY((length ("%h.len"))) elts[1];
448 /* Mark which labels are explicitly declared.
449 These may be shadowed, and may be referenced from nested functions. */
450 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
452 typedef enum c_language_kind
454 clk_c = 0, /* C90, C94 or C99 */
455 clk_objc = 1, /* clk_c with ObjC features. */
456 clk_cxx = 2, /* ANSI/ISO C++ */
457 clk_objcxx = 3 /* clk_cxx with ObjC features. */
461 /* To test for a specific language use c_language, defined by each
462 front end. For "ObjC features" or "not C++" use the macros. */
463 extern c_language_kind c_language;
465 #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
466 #define c_dialect_objc() ((c_language & clk_objc) != 0)
468 /* The various name of operator that appears in error messages. */
469 typedef enum ref_operator {
478 /* implicit conversion */
479 RO_IMPLICIT_CONVERSION,
484 /* Information about a statement tree. */
486 struct GTY(()) stmt_tree_s {
487 /* A stack of statement lists being collected. */
488 vec<tree, va_gc> *x_cur_stmt_list;
490 /* In C++, Nonzero if we should treat statements as full
491 expressions. In particular, this variable is non-zero if at the
492 end of a statement we should destroy any temporaries created
493 during that statement. Similarly, if, at the end of a block, we
494 should destroy any local variables in this block. Normally, this
495 variable is nonzero, since those are the normal semantics of
498 This flag has no effect in C. */
499 int stmts_are_full_exprs_p;
502 typedef struct stmt_tree_s *stmt_tree;
504 /* Global state pertinent to the current function. Some C dialects
505 extend this structure with additional fields. */
507 struct GTY(()) c_language_function {
508 /* While we are parsing the function, this contains information
509 about the statement-tree that we are building. */
510 struct stmt_tree_s x_stmt_tree;
512 /* Vector of locally defined typedefs, for
513 -Wunused-local-typedefs. */
514 vec<tree, va_gc> *local_typedefs;
517 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
519 /* When building a statement-tree, this is the current statement list
521 #define cur_stmt_list (stmt_list_stack->last ())
523 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
525 /* Language-specific hooks. */
527 /* If non-NULL, this function is called after a precompile header file
529 extern void (*lang_post_pch_load) (void);
531 extern void push_file_scope (void);
532 extern void pop_file_scope (void);
533 extern stmt_tree current_stmt_tree (void);
534 extern tree push_stmt_list (void);
535 extern tree pop_stmt_list (tree);
536 extern tree add_stmt (tree);
537 extern void push_cleanup (tree, tree, bool);
538 extern tree pushdecl_top_level (tree);
539 extern tree pushdecl (tree);
540 extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
541 location_t, tree, tree);
542 extern tree build_array_notation_expr (location_t, tree, tree, enum tree_code,
543 location_t, tree, tree);
544 extern tree build_array_notation_ref (location_t, tree, tree, tree, tree, tree);
545 extern tree build_indirect_ref (location_t, tree, ref_operator);
547 extern int field_decl_cmp (const void *, const void *);
548 extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
550 extern bool has_c_linkage (const_tree decl);
552 /* Switches common to the C front ends. */
554 /* Nonzero means don't output line number information. */
556 extern char flag_no_line_commands;
558 /* Nonzero causes -E output not to be done, but directives such as
559 #define that have side effects are still obeyed. */
561 extern char flag_no_output;
563 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
564 'N' or 'U' of the command line switch. */
566 extern char flag_dump_macros;
568 /* Nonzero means pass #include lines through to the output. */
570 extern char flag_dump_includes;
572 /* Nonzero means process PCH files while preprocessing. */
574 extern bool flag_pch_preprocess;
576 /* The file name to which we should write a precompiled header, or
577 NULL if no header will be written in this compile. */
579 extern const char *pch_file;
581 /* Nonzero if an ISO standard was selected. It rejects macros in the
586 /* C/ObjC language option variables. */
589 /* Nonzero means allow type mismatches in conditional expressions;
590 just make their values `void'. */
592 extern int flag_cond_mismatch;
594 /* Nonzero means enable C89 Amendment 1 features. */
596 extern int flag_isoc94;
598 /* Nonzero means use the ISO C99 (or C11) dialect of C. */
600 extern int flag_isoc99;
602 /* Nonzero means use the ISO C11 dialect of C. */
604 extern int flag_isoc11;
606 /* Nonzero means that we have builtin functions, and main is an int. */
608 extern int flag_hosted;
610 /* ObjC language option variables. */
613 /* Tells the compiler that this is a special run. Do not perform any
614 compiling, instead we are to test some platform dependent features
615 and output a C header file with appropriate definitions. */
617 extern int print_struct_values;
619 /* Tells the compiler what is the constant string class for ObjC. */
621 extern const char *constant_string_class_name;
624 /* C++ language option variables. */
627 /* Nonzero means generate separate instantiation control files and
628 juggle them at link time. */
630 extern int flag_use_repository;
632 /* The supported C++ dialects. */
645 /* The C++ dialect being used. C++98 is the default. */
646 extern enum cxx_dialect cxx_dialect;
648 /* Maximum template instantiation depth. This limit is rather
649 arbitrary, but it exists to limit the time it takes to notice
650 excessively recursive template instantiations. */
652 extern int max_tinst_depth;
654 /* Nonzero means that we should not issue warnings about problems that
655 occur when the code is executed, because the code being processed
656 is not expected to be executed. This is set during parsing. This
657 is used for cases like sizeof() and "0 ? a : b". This is a count,
658 not a bool, because unexecuted expressions can nest. */
660 extern int c_inhibit_evaluation_warnings;
662 /* Whether lexing has been completed, so subsequent preprocessor
663 errors should use the compiler's input_location. */
665 extern bool done_lexing;
667 /* C types are partitioned into three subsets: object, function, and
669 #define C_TYPE_OBJECT_P(type) \
670 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
672 #define C_TYPE_INCOMPLETE_P(type) \
673 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
675 #define C_TYPE_FUNCTION_P(type) \
676 (TREE_CODE (type) == FUNCTION_TYPE)
678 /* For convenience we define a single macro to identify the class of
679 object or incomplete types. */
680 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
681 (!C_TYPE_FUNCTION_P (type))
683 struct visibility_flags
685 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
686 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
689 /* These enumerators are possible types of unsafe conversions.
690 SAFE_CONVERSION The conversion is safe
691 UNSAFE_OTHER Another type of conversion with problems
692 UNSAFE_SIGN Conversion between signed and unsigned integers
693 which are all warned about immediately, so this is unused
694 UNSAFE_REAL Conversions that reduce the precision of reals
695 including conversions from reals to integers
697 enum conversion_safety { SAFE_CONVERSION = 0, UNSAFE_OTHER, UNSAFE_SIGN, UNSAFE_REAL };
699 /* Global visibility options. */
700 extern struct visibility_flags visibility_options;
702 /* Attribute table common to the C front ends. */
703 extern const struct attribute_spec c_common_attribute_table[];
704 extern const struct attribute_spec c_common_format_attribute_table[];
706 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
707 ID is the identifier to use, NAME is the string.
708 TYPE_DEP indicates whether it depends on type of the function or not
709 (i.e. __PRETTY_FUNCTION__). */
711 extern tree (*make_fname_decl) (location_t, tree, int);
713 /* In c-decl.c and cp/tree.c. FIXME. */
714 extern void c_register_addr_space (const char *str, addr_space_t as);
717 extern bool in_late_binary_op;
718 extern const char *c_addr_space_name (addr_space_t as);
719 extern tree identifier_global_value (tree);
720 extern tree c_linkage_bindings (tree);
721 extern void record_builtin_type (enum rid, const char *, tree);
722 extern tree build_void_list_node (void);
723 extern void start_fname_decls (void);
724 extern void finish_fname_decls (void);
725 extern const char *fname_as_string (int);
726 extern tree fname_decl (location_t, unsigned, tree);
728 extern int check_user_alignment (const_tree, bool);
729 extern void check_function_arguments (const_tree, int, tree *);
730 extern void check_function_arguments_recurse (void (*)
732 unsigned HOST_WIDE_INT),
734 unsigned HOST_WIDE_INT);
735 extern bool check_builtin_function_arguments (tree, int, tree *);
736 extern void check_function_format (tree, int, tree *);
737 extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
738 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
739 extern bool attribute_takes_identifier_p (const_tree);
740 extern bool c_common_handle_option (size_t, const char *, int, int, location_t,
741 const struct cl_option_handlers *);
742 extern bool default_handle_c_option (size_t, const char *, int);
743 extern tree c_common_type_for_mode (enum machine_mode, int);
744 extern tree c_common_type_for_size (unsigned int, int);
745 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
747 extern tree c_common_unsigned_type (tree);
748 extern tree c_common_signed_type (tree);
749 extern tree c_common_signed_or_unsigned_type (int, tree);
750 extern void c_common_init_ts (void);
751 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
752 extern enum conversion_safety unsafe_conversion_p (location_t, tree, tree,
754 extern bool decl_with_nonnull_addr_p (const_tree);
755 extern tree c_fully_fold (tree, bool, bool *);
756 extern tree decl_constant_value_for_optimization (tree);
757 extern tree c_wrap_maybe_const (tree, bool);
758 extern tree c_save_expr (tree);
759 extern tree c_common_truthvalue_conversion (location_t, tree);
760 extern void c_apply_type_quals_to_decl (int, tree);
761 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
762 extern tree c_alignof_expr (location_t, tree);
763 /* Print an error message for invalid operands to arith operation CODE.
764 NOP_EXPR is used as a special case (see truthvalue_conversion). */
765 extern void binary_op_error (location_t, enum tree_code, tree, tree);
766 extern tree fix_string_type (tree);
767 extern void constant_expression_warning (tree);
768 extern void constant_expression_error (tree);
769 extern bool strict_aliasing_warning (tree, tree, tree);
770 extern void sizeof_pointer_memaccess_warning (location_t *, tree,
771 vec<tree, va_gc> *, tree *,
772 bool (*) (tree, tree));
773 extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
774 extern tree convert_and_check (location_t, tree, tree);
775 extern void overflow_warning (location_t, tree);
776 extern bool warn_if_unused_value (const_tree, location_t);
777 extern void warn_logical_operator (location_t, enum tree_code, tree,
778 enum tree_code, tree, enum tree_code, tree);
779 extern void check_main_parameter_types (tree decl);
780 extern bool c_determine_visibility (tree);
781 extern bool vector_types_compatible_elements_p (tree, tree);
782 extern void mark_valid_location_for_stdc_pragma (bool);
783 extern bool valid_location_for_stdc_pragma_p (void);
784 extern void set_float_const_decimal64 (void);
785 extern void clear_float_const_decimal64 (void);
786 extern bool float_const_decimal64_p (void);
788 extern bool keyword_begins_type_specifier (enum rid);
789 extern bool keyword_is_storage_class_specifier (enum rid);
790 extern bool keyword_is_type_qualifier (enum rid);
791 extern bool keyword_is_decl_specifier (enum rid);
792 extern bool cxx_fundamental_alignment_p (unsigned);
793 extern bool pointer_to_zero_sized_aggr_p (tree);
795 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
796 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
798 /* Subroutine of build_binary_op, used for certain operations. */
799 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
801 /* Subroutine of build_binary_op, used for comparison operations.
802 See if the operands have both been converted from subword integer types
803 and, if so, perhaps change them both back to their original type. */
804 extern tree shorten_compare (location_t, tree *, tree *, tree *,
807 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
810 /* Add qualifiers to a type, in the fashion for C. */
811 extern tree c_build_qualified_type (tree, int);
813 /* Build tree nodes and builtin functions common to both C and C++ language
815 extern void c_common_nodes_and_builtins (void);
817 extern void disable_builtin_function (const char *);
819 extern void set_compound_literal_name (tree decl);
821 extern tree build_va_arg (location_t, tree, tree);
823 extern const unsigned int c_family_lang_mask;
824 extern unsigned int c_common_option_lang_mask (void);
825 extern void c_common_initialize_diagnostics (diagnostic_context *);
826 extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
827 extern void c_common_init_options_struct (struct gcc_options *);
828 extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
829 extern bool c_common_post_options (const char **);
830 extern bool c_common_init (void);
831 extern void c_common_finish (void);
832 extern void c_common_parse_file (void);
833 extern alias_set_type c_common_get_alias_set (tree);
834 extern void c_register_builtin_type (tree, const char*);
835 extern bool c_promoting_integer_type_p (const_tree);
836 extern int self_promoting_args_p (const_tree);
837 extern tree strip_pointer_operator (tree);
838 extern tree strip_pointer_or_array_types (tree);
839 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
841 /* This is the basic parsing function. */
842 extern void c_parse_file (void);
844 extern void warn_for_omitted_condop (location_t, tree);
846 /* These macros provide convenient access to the various _STMT nodes. */
848 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
849 if a statement expression. */
850 #define STATEMENT_LIST_STMT_EXPR(NODE) \
851 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
853 /* Nonzero if a label has been added to the statement list. */
854 #define STATEMENT_LIST_HAS_LABEL(NODE) \
855 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
857 /* C_MAYBE_CONST_EXPR accessors. */
858 #define C_MAYBE_CONST_EXPR_PRE(NODE) \
859 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
860 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
861 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
862 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
863 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
864 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
865 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
866 #define EXPR_INT_CONST_OPERANDS(EXPR) \
867 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
868 && (TREE_CODE (EXPR) == INTEGER_CST \
869 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
870 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
872 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
873 #define DECL_C_BIT_FIELD(NODE) \
874 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
875 #define SET_DECL_C_BIT_FIELD(NODE) \
876 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
877 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
878 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
880 extern tree do_case (location_t, tree, tree);
881 extern tree build_stmt (location_t, enum tree_code, ...);
882 extern tree build_real_imag_expr (location_t, enum tree_code, tree);
884 /* These functions must be defined by each front-end which implements
885 a variant of the C language. They are used in c-common.c. */
887 extern tree build_unary_op (location_t, enum tree_code, tree, int);
888 extern tree build_binary_op (location_t, enum tree_code, tree, tree, int);
889 extern tree perform_integral_promotions (tree);
891 /* These functions must be defined by each front-end which implements
892 a variant of the C language. They are used by port files. */
894 extern tree default_conversion (tree);
896 /* Given two integer or real types, return the type for their sum.
897 Given two compatible ANSI C types, returns the merged type. */
899 extern tree common_type (tree, tree);
901 extern tree decl_constant_value (tree);
903 /* Handle increment and decrement of boolean types. */
904 extern tree boolean_increment (enum tree_code, tree);
906 extern int case_compare (splay_tree_key, splay_tree_key);
908 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree);
910 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
912 extern tree build_function_call (location_t, tree, tree);
914 extern tree build_function_call_vec (location_t, vec<location_t>, tree,
915 vec<tree, va_gc> *, vec<tree, va_gc> *);
917 extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *);
919 extern tree finish_label_address_expr (tree, location_t);
921 /* Same function prototype, but the C and C++ front ends have
922 different implementations. Used in c-common.c. */
923 extern tree lookup_label (tree);
924 extern tree lookup_name (tree);
925 extern bool lvalue_p (const_tree);
927 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
928 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
929 extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
931 extern void init_c_lex (void);
933 extern void c_cpp_builtins (cpp_reader *);
934 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
935 extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int,
936 const char *, va_list *)
937 ATTRIBUTE_GCC_DIAG(6,0);
939 extern bool parse_optimize_options (tree, bool);
941 /* Positive if an implicit `extern "C"' scope has just been entered;
942 negative if such a scope has just been exited. */
943 extern GTY(()) int pending_lang_change;
945 /* Information recorded about each file examined during compilation. */
949 int time; /* Time spent in the file. */
951 /* Flags used only by C++.
952 INTERFACE_ONLY nonzero means that we are in an "interface" section
953 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
954 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
955 INTERFACE_ONLY is zero, it means that we are responsible for
956 exporting definitions that others might need. */
957 short interface_only;
958 short interface_unknown;
961 struct c_fileinfo *get_fileinfo (const char *);
962 extern void dump_time_statistics (void);
964 extern bool c_dump_tree (void *, tree);
966 extern void verify_sequence_points (tree);
968 extern tree fold_offsetof_1 (tree);
969 extern tree fold_offsetof (tree);
971 /* Places where an lvalue, or modifiable lvalue, may be required.
972 Used to select diagnostic messages in lvalue_error and
982 extern void readonly_error (location_t, tree, enum lvalue_use);
983 extern void lvalue_error (location_t, enum lvalue_use);
984 extern void invalid_indirection_error (location_t, tree, ref_operator);
986 extern int complete_array_type (tree *, tree, bool);
988 extern tree builtin_type_for_size (int, bool);
990 extern void c_common_mark_addressable_vec (tree);
992 extern void warn_array_subscript_with_type_char (tree);
993 extern void warn_about_parentheses (location_t,
995 enum tree_code, tree,
996 enum tree_code, tree);
997 extern void warn_for_unused_label (tree label);
998 extern void warn_for_div_by_zero (location_t, tree divisor);
999 extern void warn_for_sign_compare (location_t,
1000 tree orig_op0, tree orig_op1,
1003 enum tree_code resultcode);
1004 extern void do_warn_double_promotion (tree, tree, tree, const char *,
1006 extern void set_underlying_type (tree);
1007 extern void record_locally_defined_typedef (tree);
1008 extern void maybe_record_typedef_use (tree);
1009 extern void maybe_warn_unused_local_typedefs (void);
1010 extern vec<tree, va_gc> *make_tree_vector (void);
1011 extern void release_tree_vector (vec<tree, va_gc> *);
1012 extern vec<tree, va_gc> *make_tree_vector_single (tree);
1013 extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1014 extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1016 /* Used for communication between c_common_type_for_mode and
1017 c_register_builtin_type. */
1018 extern GTY(()) tree registered_builtin_types;
1020 /* In c-gimplify.c */
1021 extern void c_genericize (tree);
1022 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1023 extern tree c_build_bind_expr (location_t, tree, tree);
1026 extern void pch_init (void);
1027 extern void pch_cpp_save_state (void);
1028 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1029 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1031 extern void c_common_write_pch (void);
1032 extern void c_common_no_more_pch (void);
1033 extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1035 /* In *-checksum.c */
1036 extern const unsigned char executable_checksum[16];
1038 /* In c-cppbuiltin.c */
1039 extern void builtin_define_std (const char *macro);
1040 extern void builtin_define_with_value (const char *, const char *, int);
1041 extern void c_stddef_cpp_builtins (void);
1042 extern void fe_file_change (const struct line_map *);
1043 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char);
1045 /* In c-ppoutput.c */
1046 extern void init_pp_output (FILE *);
1047 extern void preprocess_file (cpp_reader *);
1048 extern void pp_file_change (const struct line_map *);
1049 extern void pp_dir_change (cpp_reader *, const char *);
1050 extern bool check_missing_format_attribute (tree, tree);
1053 #if HOST_BITS_PER_WIDE_INT >= 64
1054 typedef unsigned HOST_WIDE_INT omp_clause_mask;
1055 # define OMP_CLAUSE_MASK_1 ((omp_clause_mask) 1)
1057 struct omp_clause_mask
1059 inline omp_clause_mask ();
1060 inline omp_clause_mask (unsigned HOST_WIDE_INT l);
1061 inline omp_clause_mask (unsigned HOST_WIDE_INT l,
1062 unsigned HOST_WIDE_INT h);
1063 inline omp_clause_mask &operator &= (omp_clause_mask);
1064 inline omp_clause_mask &operator |= (omp_clause_mask);
1065 inline omp_clause_mask operator ~ () const;
1066 inline omp_clause_mask operator & (omp_clause_mask) const;
1067 inline omp_clause_mask operator | (omp_clause_mask) const;
1068 inline omp_clause_mask operator >> (int);
1069 inline omp_clause_mask operator << (int);
1070 inline bool operator == (omp_clause_mask) const;
1071 inline bool operator != (omp_clause_mask) const;
1072 unsigned HOST_WIDE_INT low, high;
1076 omp_clause_mask::omp_clause_mask ()
1081 omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l)
1087 omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l,
1088 unsigned HOST_WIDE_INT h)
1093 inline omp_clause_mask &
1094 omp_clause_mask::operator &= (omp_clause_mask b)
1101 inline omp_clause_mask &
1102 omp_clause_mask::operator |= (omp_clause_mask b)
1109 inline omp_clause_mask
1110 omp_clause_mask::operator ~ () const
1112 omp_clause_mask ret (~low, ~high);
1116 inline omp_clause_mask
1117 omp_clause_mask::operator | (omp_clause_mask b) const
1119 omp_clause_mask ret (low | b.low, high | b.high);
1123 inline omp_clause_mask
1124 omp_clause_mask::operator & (omp_clause_mask b) const
1126 omp_clause_mask ret (low & b.low, high & b.high);
1130 inline omp_clause_mask
1131 omp_clause_mask::operator << (int amount)
1133 omp_clause_mask ret;
1134 if (amount >= HOST_BITS_PER_WIDE_INT)
1137 ret.high = low << (amount - HOST_BITS_PER_WIDE_INT);
1139 else if (amount == 0)
1143 ret.low = low << amount;
1144 ret.high = (low >> (HOST_BITS_PER_WIDE_INT - amount))
1150 inline omp_clause_mask
1151 omp_clause_mask::operator >> (int amount)
1153 omp_clause_mask ret;
1154 if (amount >= HOST_BITS_PER_WIDE_INT)
1156 ret.low = high >> (amount - HOST_BITS_PER_WIDE_INT);
1159 else if (amount == 0)
1163 ret.low = (high << (HOST_BITS_PER_WIDE_INT - amount))
1165 ret.high = high >> amount;
1171 omp_clause_mask::operator == (omp_clause_mask b) const
1173 return low == b.low && high == b.high;
1177 omp_clause_mask::operator != (omp_clause_mask b) const
1179 return low != b.low || high != b.high;
1182 # define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1185 enum c_omp_clause_split
1187 C_OMP_CLAUSE_SPLIT_TARGET = 0,
1188 C_OMP_CLAUSE_SPLIT_TEAMS,
1189 C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1190 C_OMP_CLAUSE_SPLIT_PARALLEL,
1191 C_OMP_CLAUSE_SPLIT_FOR,
1192 C_OMP_CLAUSE_SPLIT_SIMD,
1193 C_OMP_CLAUSE_SPLIT_COUNT,
1194 C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR
1197 extern tree c_finish_omp_master (location_t, tree);
1198 extern tree c_finish_omp_taskgroup (location_t, tree);
1199 extern tree c_finish_omp_critical (location_t, tree, tree);
1200 extern tree c_finish_omp_ordered (location_t, tree);
1201 extern void c_finish_omp_barrier (location_t);
1202 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1203 tree, tree, tree, tree, tree, bool, bool);
1204 extern void c_finish_omp_flush (location_t);
1205 extern void c_finish_omp_taskwait (location_t);
1206 extern void c_finish_omp_taskyield (location_t);
1207 extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1209 extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1211 extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1212 extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1213 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1215 /* Not in c-omp.c; provided by the front end. */
1216 extern bool c_omp_sharing_predetermined (tree);
1217 extern tree c_omp_remap_decl (tree, bool);
1218 extern void record_types_used_by_current_var_decl (tree);
1220 /* Return next tree in the chain for chain_next walking of tree nodes. */
1222 c_tree_chain_next (tree t)
1224 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1225 kind of object, never a long chain of nodes. Prefer
1226 TYPE_NEXT_VARIANT for types. */
1227 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1228 return TYPE_NEXT_VARIANT (t);
1229 /* Otherwise, if there is TREE_CHAIN, return it. */
1230 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1231 return TREE_CHAIN (t);
1235 /* Mask used by tm_stmt_attr. */
1236 #define TM_STMT_ATTR_OUTER 2
1237 #define TM_STMT_ATTR_ATOMIC 4
1238 #define TM_STMT_ATTR_RELAXED 8
1240 extern int parse_tm_stmt_attr (tree, int);
1242 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1243 are ordered specifically such that more restrictive attributes are
1244 at lower bit positions. This fact is known by the C++ tm attribute
1245 inheritance code such that least bit extraction (mask & -mask) results
1246 in the most restrictive attribute. */
1247 #define TM_ATTR_SAFE 1
1248 #define TM_ATTR_CALLABLE 2
1249 #define TM_ATTR_PURE 4
1250 #define TM_ATTR_IRREVOCABLE 8
1251 #define TM_ATTR_MAY_CANCEL_OUTER 16
1253 extern int tm_attr_to_mask (tree);
1254 extern tree tm_mask_to_attr (int);
1255 extern tree find_tm_attribute (tree);
1257 /* A suffix-identifier value doublet that represents user-defined literals
1259 enum overflow_type {
1265 struct GTY(()) tree_userdef_literal {
1266 struct tree_base base;
1270 enum overflow_type overflow;
1273 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1274 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1276 #define USERDEF_LITERAL_VALUE(NODE) \
1277 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1279 #define USERDEF_LITERAL_OVERFLOW(NODE) \
1280 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1282 #define USERDEF_LITERAL_NUM_STRING(NODE) \
1283 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1285 #define USERDEF_LITERAL_TYPE(NODE) \
1286 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1288 extern tree build_userdef_literal (tree suffix_id, tree value,
1289 enum overflow_type overflow,
1292 extern void convert_vector_to_pointer_for_subscript (location_t, tree*, tree);
1294 /* Possibe cases of scalar_to_vector conversion. */
1296 stv_error, /* Error occurred. */
1297 stv_nothing, /* Nothing happened. */
1298 stv_firstarg, /* First argument must be expanded. */
1299 stv_secondarg /* Second argument must be expanded. */
1302 extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1303 tree op0, tree op1, bool);
1305 /* In c-cilkplus.c */
1306 extern tree c_finish_cilk_clauses (tree);
1307 extern tree c_validate_cilk_plus_loop (tree *, int *, void *);
1308 extern bool c_check_cilk_loop (location_t, tree);
1310 /* These #defines allow users to access different operands of the
1311 array notation tree. */
1313 #define ARRAY_NOTATION_CHECK(NODE) TREE_CHECK (NODE, ARRAY_NOTATION_REF)
1314 #define ARRAY_NOTATION_ARRAY(NODE) \
1315 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 0)
1316 #define ARRAY_NOTATION_START(NODE) \
1317 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 1)
1318 #define ARRAY_NOTATION_LENGTH(NODE) \
1319 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 2)
1320 #define ARRAY_NOTATION_STRIDE(NODE) \
1321 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 3)
1323 /* This structure holds all the scalar values and its appropriate variable
1324 replacment. It is mainly used by the function that pulls all the invariant
1325 parts that should be executed only once, which comes with array notation
1329 vec<tree, va_gc> *list_values;
1330 vec<tree, va_gc> *replacement;
1331 vec<enum tree_code, va_gc> *additional_tcodes;
1334 /* This structure holds all the important components that can be extracted
1335 from an ARRAY_NOTATION_REF expression. It is used to pass array notation
1336 information between the functions that are responsible for expansion. */
1337 typedef struct cilkplus_an_parts
1346 /* This structure holds the components necessary to create the loop around
1347 the ARRAY_REF that is created using the ARRAY_NOTATION information. */
1349 typedef struct cilkplus_an_loop_parts
1351 tree var; /* Loop induction variable. */
1352 tree incr; /* Loop increment/decrement expression. */
1353 tree cmp; /* Loop condition. */
1354 tree ind_init; /* Initialization of the loop induction variable. */
1357 /* In array-notation-common.c. */
1358 extern HOST_WIDE_INT extract_sec_implicit_index_arg (location_t, tree);
1359 extern bool is_sec_implicit_index_fn (tree);
1360 extern void array_notation_init_builtins (void);
1361 extern struct c_expr fix_array_notation_expr (location_t, enum tree_code,
1363 extern bool contains_array_notation_expr (tree);
1364 extern tree expand_array_notation_exprs (tree);
1365 extern tree fix_conditional_array_notations (tree);
1366 extern tree find_correct_array_notation_type (tree);
1367 extern bool length_mismatch_in_expr_p (location_t, vec<vec<an_parts> >);
1368 extern enum built_in_function is_cilkplus_reduce_builtin (tree);
1369 extern bool find_rank (location_t, tree, tree, bool, size_t *);
1370 extern void extract_array_notation_exprs (tree, bool, vec<tree, va_gc> **);
1371 extern void replace_array_notations (tree *, bool, vec<tree, va_gc> *,
1372 vec<tree, va_gc> *);
1373 extern tree find_inv_trees (tree *, int *, void *);
1374 extern tree replace_inv_trees (tree *, int *, void *);
1375 extern tree find_correct_array_notation_type (tree op);
1376 extern void cilkplus_extract_an_triplets (vec<tree, va_gc> *, size_t, size_t,
1377 vec<vec<an_parts> > *);
1378 extern vec <tree, va_gc> *fix_sec_implicit_args
1379 (location_t, vec <tree, va_gc> *, vec<an_loop_parts>, size_t, tree);
1382 extern tree insert_cilk_frame (tree);
1383 extern void cilk_init_builtins (void);
1384 extern int gimplify_cilk_spawn (tree *);
1385 extern void cilk_install_body_with_frame_cleanup (tree, tree, void *);
1386 extern bool cilk_detect_spawn_and_unwrap (tree *);
1387 extern bool cilk_set_spawn_marker (location_t, tree);
1388 extern tree build_cilk_sync (void);
1389 extern tree build_cilk_spawn (location_t, tree);
1390 extern tree make_cilk_frame (tree);
1391 extern tree create_cilk_function_exit (tree, bool, bool);
1392 extern tree cilk_install_body_pedigree_operations (tree);
1393 extern void cilk_outline (tree, tree *, void *);
1394 extern bool contains_cilk_spawn_stmt (tree);
1395 #endif /* ! GCC_C_COMMON_H */