source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/hardware/tools/avr/lib/gcc/avr/4.9.2/plugin/include/c-family/c-common.h @ 4837

Last change on this file since 4837 was 4837, checked in by daduve, 2 years ago

Adding new version

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1/* Definitions for c-common.c.
2   Copyright (C) 1987-2014 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3.  If not see
18<http://www.gnu.org/licenses/>.  */
19
20#ifndef GCC_C_COMMON_H
21#define GCC_C_COMMON_H
22
23#include "splay-tree.h"
24#include "cpplib.h"
25#include "ggc.h"
26#include "tree.h"
27
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)
34#error \
35In order for the format checking to accept the C front end diagnostic \
36framework extensions, you must include this file before diagnostic-core.h \
37never after.
38#endif
39#ifndef GCC_DIAG_STYLE
40#define GCC_DIAG_STYLE __gcc_cdiag__
41#endif
42#include "diagnostic-core.h"
43
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)
50   2: unused
51   3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
52   4: unused
53*/
54
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.  */
60
61enum rid
62{
63  /* Modifiers: */
64  /* C, in empirical order of frequency.  */
65  RID_STATIC = 0,
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,
70
71  /* C extensions */
72  RID_COMPLEX, RID_THREAD, RID_SAT,
73
74  /* C++ */
75  RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
76
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,
80
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,
86  RID_NONATOMIC,
87
88  /* C (reserved and imaginary types not implemented, so any use is a
89     syntax error) */
90  RID_IMAGINARY,
91
92  /* C */
93  RID_INT,     RID_CHAR,   RID_FLOAT,    RID_DOUBLE, RID_VOID,
94  RID_INT128,
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,
98  RID_SIZEOF,
99
100  /* C extensions */
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,
106
107  /* C11 */
108  RID_ALIGNAS, RID_GENERIC,
109
110  /* This means to warn that this is a C++ keyword, and then treat it
111     as a normal identifier.  */
112  RID_CXX_COMPAT_WARN,
113
114  /* GNU transactional memory extension */
115  RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
116
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,
119
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,
130
131  /* casts */
132  RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
133
134  /* C++ extensions */
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,
147
148  /* C++11 */
149  RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
150
151  /* Cilk Plus keywords.  */
152  RID_CILK_SPAWN, RID_CILK_SYNC,
153 
154  /* Objective-C ("AT" reserved words - they are only keywords when
155     they follow '@')  */
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,
164  RID_AT_INTERFACE,
165  RID_AT_IMPLEMENTATION,
166
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 */
172  RID_ADDR_SPACE_1,
173  RID_ADDR_SPACE_2,
174  RID_ADDR_SPACE_3,
175  RID_ADDR_SPACE_4,
176  RID_ADDR_SPACE_5,
177  RID_ADDR_SPACE_6,
178  RID_ADDR_SPACE_7,
179  RID_ADDR_SPACE_8,
180  RID_ADDR_SPACE_9,
181  RID_ADDR_SPACE_10,
182  RID_ADDR_SPACE_11,
183  RID_ADDR_SPACE_12,
184  RID_ADDR_SPACE_13,
185  RID_ADDR_SPACE_14,
186  RID_ADDR_SPACE_15,
187
188  RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
189  RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
190
191  RID_MAX,
192
193  RID_FIRST_MODIFIER = RID_STATIC,
194  RID_LAST_MODIFIER = RID_ONEWAY,
195
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
204};
205
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)
209
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)
213
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)
217
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.
224 */
225#define OBJC_IS_CXX_KEYWORD(rid) \
226  (rid == RID_CLASS                                                     \
227   || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE   \
228   || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
229
230/* The elements of `ridpointers' are identifier nodes for the reserved
231   type names and storage classes.  It is indexed by a RID_... value.  */
232extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
233
234/* Standard named or nameless data types of the C compiler.  */
235
236enum c_tree_index
237{
238    CTI_CHAR16_TYPE,
239    CTI_CHAR32_TYPE,
240    CTI_WCHAR_TYPE,
241    CTI_UNDERLYING_WCHAR_TYPE,
242    CTI_WINT_TYPE,
243    CTI_SIGNED_SIZE_TYPE, /* For format checking only.  */
244    CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only.  */
245    CTI_INTMAX_TYPE,
246    CTI_UINTMAX_TYPE,
247    CTI_WIDEST_INT_LIT_TYPE,
248    CTI_WIDEST_UINT_LIT_TYPE,
249
250    /* Types for <stdint.h>, that may not be defined on all
251       targets.  */
252    CTI_SIG_ATOMIC_TYPE,
253    CTI_INT8_TYPE,
254    CTI_INT16_TYPE,
255    CTI_INT32_TYPE,
256    CTI_INT64_TYPE,
257    CTI_UINT8_TYPE,
258    CTI_UINT16_TYPE,
259    CTI_UINT32_TYPE,
260    CTI_UINT64_TYPE,
261    CTI_INT_LEAST8_TYPE,
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,
269    CTI_INT_FAST8_TYPE,
270    CTI_INT_FAST16_TYPE,
271    CTI_INT_FAST32_TYPE,
272    CTI_INT_FAST64_TYPE,
273    CTI_UINT_FAST8_TYPE,
274    CTI_UINT_FAST16_TYPE,
275    CTI_UINT_FAST32_TYPE,
276    CTI_UINT_FAST64_TYPE,
277    CTI_INTPTR_TYPE,
278    CTI_UINTPTR_TYPE,
279
280    CTI_CHAR_ARRAY_TYPE,
281    CTI_CHAR16_ARRAY_TYPE,
282    CTI_CHAR32_ARRAY_TYPE,
283    CTI_WCHAR_ARRAY_TYPE,
284    CTI_STRING_TYPE,
285    CTI_CONST_STRING_TYPE,
286
287    /* Type for boolean expressions (bool in C++, int in C).  */
288    CTI_TRUTHVALUE_TYPE,
289    CTI_TRUTHVALUE_TRUE,
290    CTI_TRUTHVALUE_FALSE,
291
292    CTI_DEFAULT_FUNCTION_TYPE,
293
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,
299
300    CTI_VOID_ZERO,
301
302    CTI_NULL,
303
304    CTI_MAX
305};
306
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)
313
314/* Identifier part common to the C front ends.  Inherits from
315   tree_identifier, despite appearances.  */
316struct GTY(()) c_common_identifier {
317  struct tree_common common;
318  struct cpp_hashnode node;
319};
320
321/* An entry in the reserved keyword table.  */
322
323struct c_common_resword
324{
325  const char *const word;
326  ENUM_BITFIELD(rid) const rid : 16;
327  const unsigned int disable   : 16;
328};
329
330/* Extra cpp_ttype values for C++.  */
331
332/* A token type for keywords, as opposed to ordinary identifiers.  */
333#define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1))
334
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))
340
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))
347
348/* A token type for pre-parsed C++0x decltype.  */
349#define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
350
351/* The number of token types, including C++-specific ones.  */
352#define N_CP_TTYPES ((int) (CPP_DECLTYPE + 1))
353
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.  */
357
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.  */
368
369/* The reserved keyword table.  */
370extern const struct c_common_resword c_common_reswords[];
371
372/* The number of items in the reserved keyword table.  */
373extern const unsigned int num_c_common_reswords;
374
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]
386
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]
414
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]
418
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]
425
426#define default_function_type           c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
427
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]
432
433/* A node for `((void) 0)'.  */
434#define void_zero_node                  c_global_trees[CTI_VOID_ZERO]
435
436/* The node for C++ `__null'.  */
437#define null_node                       c_global_trees[CTI_NULL]
438
439extern GTY(()) tree c_global_trees[CTI_MAX];
440
441/* In a RECORD_TYPE, a sorted array of the fields of the type, not a
442   tree for size reasons.  */
443struct GTY((variable_size)) sorted_fields_type {
444  int len;
445  tree GTY((length ("%h.len"))) elts[1];
446};
447
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)
451
452typedef enum c_language_kind
453{
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.  */
458}
459c_language_kind;
460
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.  */
463extern c_language_kind c_language;
464
465#define c_dialect_cxx()         ((c_language & clk_cxx) != 0)
466#define c_dialect_objc()        ((c_language & clk_objc) != 0)
467
468/* The various name of operator that appears in error messages. */
469typedef enum ref_operator {
470  /* NULL */
471  RO_NULL,
472  /* array indexing */
473  RO_ARRAY_INDEXING,
474  /* unary * */
475  RO_UNARY_STAR,
476  /* -> */
477  RO_ARROW,
478  /* implicit conversion */
479  RO_IMPLICIT_CONVERSION,
480  /* ->* */
481  RO_ARROW_STAR
482} ref_operator;
483
484/* Information about a statement tree.  */
485
486struct GTY(()) stmt_tree_s {
487  /* A stack of statement lists being collected.  */
488  vec<tree, va_gc> *x_cur_stmt_list;
489
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
496     C++.
497
498     This flag has no effect in C.  */
499  int stmts_are_full_exprs_p;
500};
501
502typedef struct stmt_tree_s *stmt_tree;
503
504/* Global state pertinent to the current function.  Some C dialects
505   extend this structure with additional fields.  */
506
507struct 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;
511
512  /* Vector of locally defined typedefs, for
513     -Wunused-local-typedefs.  */
514  vec<tree, va_gc> *local_typedefs;
515};
516
517#define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
518
519/* When building a statement-tree, this is the current statement list
520   being collected.  */
521#define cur_stmt_list   (stmt_list_stack->last ())
522
523#define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
524
525/* Language-specific hooks.  */
526
527/* If non-NULL, this function is called after a precompile header file
528   is loaded.  */
529extern void (*lang_post_pch_load) (void);
530
531extern void push_file_scope (void);
532extern void pop_file_scope (void);
533extern stmt_tree current_stmt_tree (void);
534extern tree push_stmt_list (void);
535extern tree pop_stmt_list (tree);
536extern tree add_stmt (tree);
537extern void push_cleanup (tree, tree, bool);
538extern tree pushdecl_top_level (tree);
539extern tree pushdecl (tree);
540extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
541                               location_t, tree, tree);
542extern tree build_array_notation_expr (location_t, tree, tree, enum tree_code,
543                                       location_t, tree, tree);
544extern tree build_array_notation_ref (location_t, tree, tree, tree, tree, tree);
545extern tree build_indirect_ref (location_t, tree, ref_operator);
546
547extern int field_decl_cmp (const void *, const void *);
548extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
549                                  void *);
550extern bool has_c_linkage (const_tree decl);
551
552/* Switches common to the C front ends.  */
553
554/* Nonzero means don't output line number information.  */
555
556extern char flag_no_line_commands;
557
558/* Nonzero causes -E output not to be done, but directives such as
559   #define that have side effects are still obeyed.  */
560
561extern char flag_no_output;
562
563/* Nonzero means dump macros in some fashion; contains the 'D', 'M',
564   'N' or 'U' of the command line switch.  */
565
566extern char flag_dump_macros;
567
568/* Nonzero means pass #include lines through to the output.  */
569
570extern char flag_dump_includes;
571
572/* Nonzero means process PCH files while preprocessing.  */
573
574extern bool flag_pch_preprocess;
575
576/* The file name to which we should write a precompiled header, or
577   NULL if no header will be written in this compile.  */
578
579extern const char *pch_file;
580
581/* Nonzero if an ISO standard was selected.  It rejects macros in the
582   user's namespace.  */
583
584extern int flag_iso;
585
586/* C/ObjC language option variables.  */
587
588
589/* Nonzero means allow type mismatches in conditional expressions;
590   just make their values `void'.  */
591
592extern int flag_cond_mismatch;
593
594/* Nonzero means enable C89 Amendment 1 features.  */
595
596extern int flag_isoc94;
597
598/* Nonzero means use the ISO C99 (or C11) dialect of C.  */
599
600extern int flag_isoc99;
601
602/* Nonzero means use the ISO C11 dialect of C.  */
603
604extern int flag_isoc11;
605
606/* Nonzero means that we have builtin functions, and main is an int.  */
607
608extern int flag_hosted;
609
610/* ObjC language option variables.  */
611
612
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.  */
616
617extern int print_struct_values;
618
619/* Tells the compiler what is the constant string class for ObjC.  */
620
621extern const char *constant_string_class_name;
622
623
624/* C++ language option variables.  */
625
626
627/* Nonzero means generate separate instantiation control files and
628   juggle them at link time.  */
629
630extern int flag_use_repository;
631
632/* The supported C++ dialects.  */
633
634enum cxx_dialect {
635  /* C++98 with TC1  */
636  cxx98,
637  cxx03 = cxx98,
638  /* C++11  */
639  cxx0x,
640  cxx11 = cxx0x,
641  /* C++1y (C++17?) */
642  cxx1y
643};
644
645/* The C++ dialect being used. C++98 is the default.  */
646extern enum cxx_dialect cxx_dialect;
647
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.  */
651
652extern int max_tinst_depth;
653
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.  */
659
660extern int c_inhibit_evaluation_warnings;
661
662/* Whether lexing has been completed, so subsequent preprocessor
663   errors should use the compiler's input_location.  */
664
665extern bool done_lexing;
666
667/* C types are partitioned into three subsets: object, function, and
668   incomplete types.  */
669#define C_TYPE_OBJECT_P(type) \
670  (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
671
672#define C_TYPE_INCOMPLETE_P(type) \
673  (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
674
675#define C_TYPE_FUNCTION_P(type) \
676  (TREE_CODE (type) == FUNCTION_TYPE)
677
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))
682
683struct visibility_flags
684{
685  unsigned inpragma : 1;        /* True when in #pragma GCC visibility.  */
686  unsigned inlines_hidden : 1;  /* True when -finlineshidden in effect.  */
687};
688
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
696 */
697enum conversion_safety { SAFE_CONVERSION = 0, UNSAFE_OTHER, UNSAFE_SIGN, UNSAFE_REAL };
698
699/* Global visibility options.  */
700extern struct visibility_flags visibility_options;
701
702/* Attribute table common to the C front ends.  */
703extern const struct attribute_spec c_common_attribute_table[];
704extern const struct attribute_spec c_common_format_attribute_table[];
705
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__).  */
710
711extern tree (*make_fname_decl) (location_t, tree, int);
712
713/* In c-decl.c and cp/tree.c.  FIXME.  */
714extern void c_register_addr_space (const char *str, addr_space_t as);
715
716/* In c-common.c.  */
717extern bool in_late_binary_op;
718extern const char *c_addr_space_name (addr_space_t as);
719extern tree identifier_global_value (tree);
720extern tree c_linkage_bindings (tree);
721extern void record_builtin_type (enum rid, const char *, tree);
722extern tree build_void_list_node (void);
723extern void start_fname_decls (void);
724extern void finish_fname_decls (void);
725extern const char *fname_as_string (int);
726extern tree fname_decl (location_t, unsigned, tree);
727
728extern int check_user_alignment (const_tree, bool);
729extern void check_function_arguments (const_tree, int, tree *);
730extern void check_function_arguments_recurse (void (*)
731                                              (void *, tree,
732                                               unsigned HOST_WIDE_INT),
733                                              void *, tree,
734                                              unsigned HOST_WIDE_INT);
735extern bool check_builtin_function_arguments (tree, int, tree *);
736extern void check_function_format (tree, int, tree *);
737extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
738extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
739extern bool attribute_takes_identifier_p (const_tree);
740extern bool c_common_handle_option (size_t, const char *, int, int, location_t,
741                                    const struct cl_option_handlers *);
742extern bool default_handle_c_option (size_t, const char *, int);
743extern tree c_common_type_for_mode (enum machine_mode, int);
744extern tree c_common_type_for_size (unsigned int, int);
745extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
746                                                int, int);
747extern tree c_common_unsigned_type (tree);
748extern tree c_common_signed_type (tree);
749extern tree c_common_signed_or_unsigned_type (int, tree);
750extern void c_common_init_ts (void);
751extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
752extern enum conversion_safety unsafe_conversion_p (location_t, tree, tree,
753                                                   bool);
754extern bool decl_with_nonnull_addr_p (const_tree);
755extern tree c_fully_fold (tree, bool, bool *);
756extern tree decl_constant_value_for_optimization (tree);
757extern tree c_wrap_maybe_const (tree, bool);
758extern tree c_save_expr (tree);
759extern tree c_common_truthvalue_conversion (location_t, tree);
760extern void c_apply_type_quals_to_decl (int, tree);
761extern unsigned int min_align_of_type (tree);
762extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
763extern tree c_alignof_expr (location_t, tree);
764/* Print an error message for invalid operands to arith operation CODE.
765   NOP_EXPR is used as a special case (see truthvalue_conversion).  */
766extern void binary_op_error (location_t, enum tree_code, tree, tree);
767extern tree fix_string_type (tree);
768extern void constant_expression_warning (tree);
769extern void constant_expression_error (tree);
770extern bool strict_aliasing_warning (tree, tree, tree);
771extern void sizeof_pointer_memaccess_warning (location_t *, tree,
772                                              vec<tree, va_gc> *, tree *,
773                                              bool (*) (tree, tree));
774extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
775extern tree convert_and_check (location_t, tree, tree);
776extern void overflow_warning (location_t, tree);
777extern bool warn_if_unused_value (const_tree, location_t);
778extern void warn_logical_operator (location_t, enum tree_code, tree,
779                                   enum tree_code, tree, enum tree_code, tree);
780extern void check_main_parameter_types (tree decl);
781extern bool c_determine_visibility (tree);
782extern bool vector_types_compatible_elements_p (tree, tree);
783extern void mark_valid_location_for_stdc_pragma (bool);
784extern bool valid_location_for_stdc_pragma_p (void);
785extern void set_float_const_decimal64 (void);
786extern void clear_float_const_decimal64 (void);
787extern bool float_const_decimal64_p (void);
788
789extern bool keyword_begins_type_specifier (enum rid);
790extern bool keyword_is_storage_class_specifier (enum rid);
791extern bool keyword_is_type_qualifier (enum rid);
792extern bool keyword_is_decl_specifier (enum rid);
793extern bool cxx_fundamental_alignment_p (unsigned);
794extern bool pointer_to_zero_sized_aggr_p (tree);
795
796#define c_sizeof(LOC, T)  c_sizeof_or_alignof_type (LOC, T, true, false, 1)
797#define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
798
799/* Subroutine of build_binary_op, used for certain operations.  */
800extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
801
802/* Subroutine of build_binary_op, used for comparison operations.
803   See if the operands have both been converted from subword integer types
804   and, if so, perhaps change them both back to their original type.  */
805extern tree shorten_compare (location_t, tree *, tree *, tree *,
806                             enum tree_code *);
807
808extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
809                             bool = true);
810
811/* Add qualifiers to a type, in the fashion for C.  */
812extern tree c_build_qualified_type (tree, int);
813
814/* Build tree nodes and builtin functions common to both C and C++ language
815   frontends.  */
816extern void c_common_nodes_and_builtins (void);
817
818extern void disable_builtin_function (const char *);
819
820extern void set_compound_literal_name (tree decl);
821
822extern tree build_va_arg (location_t, tree, tree);
823
824extern const unsigned int c_family_lang_mask;
825extern unsigned int c_common_option_lang_mask (void);
826extern void c_common_initialize_diagnostics (diagnostic_context *);
827extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
828extern void c_common_init_options_struct (struct gcc_options *);
829extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
830extern bool c_common_post_options (const char **);
831extern bool c_common_init (void);
832extern void c_common_finish (void);
833extern void c_common_parse_file (void);
834extern alias_set_type c_common_get_alias_set (tree);
835extern void c_register_builtin_type (tree, const char*);
836extern bool c_promoting_integer_type_p (const_tree);
837extern int self_promoting_args_p (const_tree);
838extern tree strip_pointer_operator (tree);
839extern tree strip_pointer_or_array_types (tree);
840extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
841
842/* This is the basic parsing function.  */
843extern void c_parse_file (void);
844
845extern void warn_for_omitted_condop (location_t, tree);
846
847/* These macros provide convenient access to the various _STMT nodes.  */
848
849/* Nonzero if a given STATEMENT_LIST represents the outermost binding
850   if a statement expression.  */
851#define STATEMENT_LIST_STMT_EXPR(NODE) \
852  TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
853
854/* Nonzero if a label has been added to the statement list.  */
855#define STATEMENT_LIST_HAS_LABEL(NODE) \
856  TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
857
858/* C_MAYBE_CONST_EXPR accessors.  */
859#define C_MAYBE_CONST_EXPR_PRE(NODE)                    \
860  TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
861#define C_MAYBE_CONST_EXPR_EXPR(NODE)                   \
862  TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
863#define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE)           \
864  TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
865#define C_MAYBE_CONST_EXPR_NON_CONST(NODE)              \
866  TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
867#define EXPR_INT_CONST_OPERANDS(EXPR)                   \
868  (INTEGRAL_TYPE_P (TREE_TYPE (EXPR))                   \
869   && (TREE_CODE (EXPR) == INTEGER_CST                  \
870       || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR       \
871           && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
872
873/* In a FIELD_DECL, nonzero if the decl was originally a bitfield.  */
874#define DECL_C_BIT_FIELD(NODE) \
875  (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
876#define SET_DECL_C_BIT_FIELD(NODE) \
877  (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
878#define CLEAR_DECL_C_BIT_FIELD(NODE) \
879  (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
880
881extern tree do_case (location_t, tree, tree);
882extern tree build_stmt (location_t, enum tree_code, ...);
883extern tree build_real_imag_expr (location_t, enum tree_code, tree);
884
885/* These functions must be defined by each front-end which implements
886   a variant of the C language.  They are used in c-common.c.  */
887
888extern tree build_unary_op (location_t, enum tree_code, tree, int);
889extern tree build_binary_op (location_t, enum tree_code, tree, tree, int);
890extern tree perform_integral_promotions (tree);
891
892/* These functions must be defined by each front-end which implements
893   a variant of the C language.  They are used by port files.  */
894
895extern tree default_conversion (tree);
896
897/* Given two integer or real types, return the type for their sum.
898   Given two compatible ANSI C types, returns the merged type.  */
899
900extern tree common_type (tree, tree);
901
902extern tree decl_constant_value (tree);
903
904/* Handle increment and decrement of boolean types.  */
905extern tree boolean_increment (enum tree_code, tree);
906
907extern int case_compare (splay_tree_key, splay_tree_key);
908
909extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree);
910
911extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
912
913extern tree build_function_call (location_t, tree, tree);
914
915extern tree build_function_call_vec (location_t, vec<location_t>, tree,
916                                     vec<tree, va_gc> *, vec<tree, va_gc> *);
917
918extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *);
919
920extern tree finish_label_address_expr (tree, location_t);
921
922/* Same function prototype, but the C and C++ front ends have
923   different implementations.  Used in c-common.c.  */
924extern tree lookup_label (tree);
925extern tree lookup_name (tree);
926extern bool lvalue_p (const_tree);
927
928extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
929extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
930extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
931
932extern void init_c_lex (void);
933
934extern void c_cpp_builtins (cpp_reader *);
935extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
936extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int,
937                         const char *, va_list *)
938     ATTRIBUTE_GCC_DIAG(6,0);
939
940extern bool parse_optimize_options (tree, bool);
941
942/* Positive if an implicit `extern "C"' scope has just been entered;
943   negative if such a scope has just been exited.  */
944extern GTY(()) int pending_lang_change;
945
946/* Information recorded about each file examined during compilation.  */
947
948struct c_fileinfo
949{
950  int time;     /* Time spent in the file.  */
951
952  /* Flags used only by C++.
953     INTERFACE_ONLY nonzero means that we are in an "interface" section
954     of the compiler.  INTERFACE_UNKNOWN nonzero means we cannot trust
955     the value of INTERFACE_ONLY.  If INTERFACE_UNKNOWN is zero and
956     INTERFACE_ONLY is zero, it means that we are responsible for
957     exporting definitions that others might need.  */
958  short interface_only;
959  short interface_unknown;
960};
961
962struct c_fileinfo *get_fileinfo (const char *);
963extern void dump_time_statistics (void);
964
965extern bool c_dump_tree (void *, tree);
966
967extern void verify_sequence_points (tree);
968
969extern tree fold_offsetof_1 (tree);
970extern tree fold_offsetof (tree);
971
972/* Places where an lvalue, or modifiable lvalue, may be required.
973   Used to select diagnostic messages in lvalue_error and
974   readonly_error.  */
975enum lvalue_use {
976  lv_assign,
977  lv_increment,
978  lv_decrement,
979  lv_addressof,
980  lv_asm
981};
982
983extern void readonly_error (location_t, tree, enum lvalue_use);
984extern void lvalue_error (location_t, enum lvalue_use);
985extern void invalid_indirection_error (location_t, tree, ref_operator);
986
987extern int complete_array_type (tree *, tree, bool);
988
989extern tree builtin_type_for_size (int, bool);
990
991extern void c_common_mark_addressable_vec (tree);
992
993extern void warn_array_subscript_with_type_char (tree);
994extern void warn_about_parentheses (location_t,
995                                    enum tree_code,
996                                    enum tree_code, tree,
997                                    enum tree_code, tree);
998extern void warn_for_unused_label (tree label);
999extern void warn_for_div_by_zero (location_t, tree divisor);
1000extern void warn_for_sign_compare (location_t,
1001                                   tree orig_op0, tree orig_op1,
1002                                   tree op0, tree op1,
1003                                   tree result_type,
1004                                   enum tree_code resultcode);
1005extern void do_warn_double_promotion (tree, tree, tree, const char *, 
1006                                      location_t);
1007extern void set_underlying_type (tree);
1008extern void record_locally_defined_typedef (tree);
1009extern void maybe_record_typedef_use (tree);
1010extern void maybe_warn_unused_local_typedefs (void);
1011extern vec<tree, va_gc> *make_tree_vector (void);
1012extern void release_tree_vector (vec<tree, va_gc> *);
1013extern vec<tree, va_gc> *make_tree_vector_single (tree);
1014extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1015extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1016
1017/* In c-gimplify.c  */
1018extern void c_genericize (tree);
1019extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1020extern tree c_build_bind_expr (location_t, tree, tree);
1021
1022/* In c-pch.c  */
1023extern void pch_init (void);
1024extern void pch_cpp_save_state (void);
1025extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1026extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1027                               const char *orig);
1028extern void c_common_write_pch (void);
1029extern void c_common_no_more_pch (void);
1030extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1031
1032/* In *-checksum.c */
1033extern const unsigned char executable_checksum[16];
1034
1035/* In c-cppbuiltin.c  */
1036extern void builtin_define_std (const char *macro);
1037extern void builtin_define_with_value (const char *, const char *, int);
1038extern void c_stddef_cpp_builtins (void);
1039extern void fe_file_change (const struct line_map *);
1040extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char);
1041
1042/* In c-ppoutput.c  */
1043extern void init_pp_output (FILE *);
1044extern void preprocess_file (cpp_reader *);
1045extern void pp_file_change (const struct line_map *);
1046extern void pp_dir_change (cpp_reader *, const char *);
1047extern bool check_missing_format_attribute (tree, tree);
1048
1049/* In c-omp.c  */
1050#if HOST_BITS_PER_WIDE_INT >= 64
1051typedef unsigned HOST_WIDE_INT omp_clause_mask;
1052# define OMP_CLAUSE_MASK_1 ((omp_clause_mask) 1)
1053#else
1054struct omp_clause_mask
1055{
1056  inline omp_clause_mask ();
1057  inline omp_clause_mask (unsigned HOST_WIDE_INT l);
1058  inline omp_clause_mask (unsigned HOST_WIDE_INT l,
1059                          unsigned HOST_WIDE_INT h);
1060  inline omp_clause_mask &operator &= (omp_clause_mask);
1061  inline omp_clause_mask &operator |= (omp_clause_mask);
1062  inline omp_clause_mask operator ~ () const;
1063  inline omp_clause_mask operator & (omp_clause_mask) const;
1064  inline omp_clause_mask operator | (omp_clause_mask) const;
1065  inline omp_clause_mask operator >> (int);
1066  inline omp_clause_mask operator << (int);
1067  inline bool operator == (omp_clause_mask) const;
1068  inline bool operator != (omp_clause_mask) const;
1069  unsigned HOST_WIDE_INT low, high;
1070};
1071
1072inline
1073omp_clause_mask::omp_clause_mask ()
1074{
1075}
1076
1077inline
1078omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l)
1079: low (l), high (0)
1080{
1081}
1082
1083inline
1084omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l,
1085                                  unsigned HOST_WIDE_INT h)
1086: low (l), high (h)
1087{
1088}
1089
1090inline omp_clause_mask &
1091omp_clause_mask::operator &= (omp_clause_mask b)
1092{
1093  low &= b.low;
1094  high &= b.high;
1095  return *this;
1096}
1097
1098inline omp_clause_mask &
1099omp_clause_mask::operator |= (omp_clause_mask b)
1100{
1101  low |= b.low;
1102  high |= b.high;
1103  return *this;
1104}
1105
1106inline omp_clause_mask
1107omp_clause_mask::operator ~ () const
1108{
1109  omp_clause_mask ret (~low, ~high);
1110  return ret;
1111}
1112
1113inline omp_clause_mask
1114omp_clause_mask::operator | (omp_clause_mask b) const
1115{
1116  omp_clause_mask ret (low | b.low, high | b.high);
1117  return ret;
1118}
1119
1120inline omp_clause_mask
1121omp_clause_mask::operator & (omp_clause_mask b) const
1122{
1123  omp_clause_mask ret (low & b.low, high & b.high);
1124  return ret;
1125}
1126
1127inline omp_clause_mask
1128omp_clause_mask::operator << (int amount)
1129{
1130  omp_clause_mask ret;
1131  if (amount >= HOST_BITS_PER_WIDE_INT)
1132    {
1133      ret.low = 0;
1134      ret.high = low << (amount - HOST_BITS_PER_WIDE_INT);
1135    }
1136  else if (amount == 0)
1137    ret = *this;
1138  else
1139    {
1140      ret.low = low << amount;
1141      ret.high = (low >> (HOST_BITS_PER_WIDE_INT - amount))
1142                 | (high << amount);
1143    }
1144  return ret;
1145}
1146
1147inline omp_clause_mask
1148omp_clause_mask::operator >> (int amount)
1149{
1150  omp_clause_mask ret;
1151  if (amount >= HOST_BITS_PER_WIDE_INT)
1152    {
1153      ret.low = high >> (amount - HOST_BITS_PER_WIDE_INT);
1154      ret.high = 0;
1155    }
1156  else if (amount == 0)
1157    ret = *this;
1158  else
1159    {
1160      ret.low = (high << (HOST_BITS_PER_WIDE_INT - amount))
1161                 | (low >> amount);
1162      ret.high = high >> amount;
1163    }
1164  return ret;
1165}
1166
1167inline bool
1168omp_clause_mask::operator == (omp_clause_mask b) const
1169{
1170  return low == b.low && high == b.high;
1171}
1172
1173inline bool
1174omp_clause_mask::operator != (omp_clause_mask b) const
1175{
1176  return low != b.low || high != b.high;
1177}
1178
1179# define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1180#endif
1181
1182enum c_omp_clause_split
1183{
1184  C_OMP_CLAUSE_SPLIT_TARGET = 0,
1185  C_OMP_CLAUSE_SPLIT_TEAMS,
1186  C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1187  C_OMP_CLAUSE_SPLIT_PARALLEL,
1188  C_OMP_CLAUSE_SPLIT_FOR,
1189  C_OMP_CLAUSE_SPLIT_SIMD,
1190  C_OMP_CLAUSE_SPLIT_COUNT,
1191  C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR
1192};
1193
1194extern tree c_finish_omp_master (location_t, tree);
1195extern tree c_finish_omp_taskgroup (location_t, tree);
1196extern tree c_finish_omp_critical (location_t, tree, tree);
1197extern tree c_finish_omp_ordered (location_t, tree);
1198extern void c_finish_omp_barrier (location_t);
1199extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1200                                 tree, tree, tree, tree, tree, bool, bool);
1201extern void c_finish_omp_flush (location_t);
1202extern void c_finish_omp_taskwait (location_t);
1203extern void c_finish_omp_taskyield (location_t);
1204extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1205                              tree, tree, tree);
1206extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1207                                 tree, tree *);
1208extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1209extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1210extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1211
1212/* Not in c-omp.c; provided by the front end.  */
1213extern bool c_omp_sharing_predetermined (tree);
1214extern tree c_omp_remap_decl (tree, bool);
1215extern void record_types_used_by_current_var_decl (tree);
1216
1217/* Return next tree in the chain for chain_next walking of tree nodes.  */
1218static inline tree
1219c_tree_chain_next (tree t)
1220{
1221  /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1222     kind of object, never a long chain of nodes.  Prefer
1223     TYPE_NEXT_VARIANT for types.  */
1224  if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1225    return TYPE_NEXT_VARIANT (t);
1226  /* Otherwise, if there is TREE_CHAIN, return it.  */
1227  if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1228    return TREE_CHAIN (t);
1229  return NULL;
1230}
1231
1232/* Mask used by tm_stmt_attr.  */
1233#define TM_STMT_ATTR_OUTER      2
1234#define TM_STMT_ATTR_ATOMIC     4
1235#define TM_STMT_ATTR_RELAXED    8
1236
1237extern int parse_tm_stmt_attr (tree, int);
1238
1239/* Mask used by tm_attr_to_mask and tm_mask_to_attr.  Note that these
1240   are ordered specifically such that more restrictive attributes are
1241   at lower bit positions.  This fact is known by the C++ tm attribute
1242   inheritance code such that least bit extraction (mask & -mask) results
1243   in the most restrictive attribute.  */
1244#define TM_ATTR_SAFE                    1
1245#define TM_ATTR_CALLABLE                2
1246#define TM_ATTR_PURE                    4
1247#define TM_ATTR_IRREVOCABLE             8
1248#define TM_ATTR_MAY_CANCEL_OUTER        16
1249
1250extern int tm_attr_to_mask (tree);
1251extern tree tm_mask_to_attr (int);
1252extern tree find_tm_attribute (tree);
1253
1254/* A suffix-identifier value doublet that represents user-defined literals
1255   for C++-0x.  */
1256enum overflow_type {
1257  OT_UNDERFLOW = -1,
1258  OT_NONE,
1259  OT_OVERFLOW
1260};
1261
1262struct GTY(()) tree_userdef_literal {
1263  struct tree_base base;
1264  tree suffix_id;
1265  tree value;
1266  tree num_string;
1267  enum overflow_type overflow;
1268};
1269
1270#define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1271  (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1272
1273#define USERDEF_LITERAL_VALUE(NODE) \
1274  (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1275
1276#define USERDEF_LITERAL_OVERFLOW(NODE) \
1277  (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1278
1279#define USERDEF_LITERAL_NUM_STRING(NODE) \
1280  (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1281
1282#define USERDEF_LITERAL_TYPE(NODE) \
1283  (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1284
1285extern tree build_userdef_literal (tree suffix_id, tree value,
1286                                   enum overflow_type overflow,
1287                                   tree num_string);
1288
1289extern void convert_vector_to_pointer_for_subscript (location_t, tree*, tree);
1290
1291/* Possibe cases of scalar_to_vector conversion.  */
1292enum stv_conv {
1293  stv_error,        /* Error occurred.  */
1294  stv_nothing,      /* Nothing happened.  */
1295  stv_firstarg,     /* First argument must be expanded.  */
1296  stv_secondarg     /* Second argument must be expanded.  */
1297};
1298
1299extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1300                                       tree op0, tree op1, bool);
1301
1302/* In c-cilkplus.c  */
1303extern tree c_finish_cilk_clauses (tree);
1304extern tree c_validate_cilk_plus_loop (tree *, int *, void *);
1305extern bool c_check_cilk_loop (location_t, tree);
1306
1307/* These #defines allow users to access different operands of the
1308   array notation tree.  */
1309
1310#define ARRAY_NOTATION_CHECK(NODE) TREE_CHECK (NODE, ARRAY_NOTATION_REF)
1311#define ARRAY_NOTATION_ARRAY(NODE) \
1312  TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 0)
1313#define ARRAY_NOTATION_START(NODE) \
1314  TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 1)
1315#define ARRAY_NOTATION_LENGTH(NODE) \
1316  TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 2)
1317#define ARRAY_NOTATION_STRIDE(NODE) \
1318  TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 3)
1319
1320/* This structure holds all the scalar values and its appropriate variable
1321   replacment.  It is mainly used by the function that pulls all the invariant
1322   parts that should be executed only once, which comes with array notation
1323   expressions.  */
1324struct inv_list
1325{
1326  vec<tree, va_gc> *list_values;
1327  vec<tree, va_gc> *replacement;
1328  vec<enum tree_code, va_gc> *additional_tcodes; 
1329};
1330
1331/* This structure holds all the important components that can be extracted
1332   from an ARRAY_NOTATION_REF expression.  It is used to pass array notation
1333   information between the functions that are responsible for expansion.  */
1334typedef struct cilkplus_an_parts
1335{
1336  tree value;
1337  tree start;
1338  tree length;
1339  tree stride;
1340  bool is_vector;
1341} an_parts;
1342
1343/* This structure holds the components necessary to create the loop around
1344   the ARRAY_REF that is created using the ARRAY_NOTATION information.  */
1345
1346typedef struct cilkplus_an_loop_parts
1347{
1348  tree var;         /* Loop induction variable.  */
1349  tree incr;        /* Loop increment/decrement expression.  */
1350  tree cmp;         /* Loop condition.  */
1351  tree ind_init;    /* Initialization of the loop induction variable.  */
1352} an_loop_parts; 
1353
1354/* In array-notation-common.c.  */
1355extern HOST_WIDE_INT extract_sec_implicit_index_arg (location_t, tree);
1356extern bool is_sec_implicit_index_fn (tree);
1357extern void array_notation_init_builtins (void);
1358extern struct c_expr fix_array_notation_expr (location_t, enum tree_code, 
1359                                              struct c_expr);
1360extern bool contains_array_notation_expr (tree);
1361extern tree expand_array_notation_exprs (tree);
1362extern tree fix_conditional_array_notations (tree);
1363extern tree find_correct_array_notation_type (tree);
1364extern bool length_mismatch_in_expr_p (location_t, vec<vec<an_parts> >);
1365extern enum built_in_function is_cilkplus_reduce_builtin (tree);
1366extern bool find_rank (location_t, tree, tree, bool, size_t *);
1367extern void extract_array_notation_exprs (tree, bool, vec<tree, va_gc> **);
1368extern void replace_array_notations (tree *, bool, vec<tree, va_gc> *,
1369                                     vec<tree, va_gc> *);
1370extern tree find_inv_trees (tree *, int *, void *);
1371extern tree replace_inv_trees (tree *, int *, void *);
1372extern tree find_correct_array_notation_type (tree op);
1373extern void cilkplus_extract_an_triplets (vec<tree, va_gc> *, size_t, size_t,
1374                                          vec<vec<an_parts> > *);
1375extern vec <tree, va_gc> *fix_sec_implicit_args
1376  (location_t, vec <tree, va_gc> *, vec<an_loop_parts>, size_t, tree);
1377
1378/* In cilk.c.  */
1379extern tree insert_cilk_frame (tree);
1380extern void cilk_init_builtins (void);
1381extern int gimplify_cilk_spawn (tree *);
1382extern void cilk_install_body_with_frame_cleanup (tree, tree, void *);
1383extern bool cilk_detect_spawn_and_unwrap (tree *);
1384extern bool cilk_set_spawn_marker (location_t, tree);
1385extern tree build_cilk_sync (void);
1386extern tree build_cilk_spawn (location_t, tree);
1387extern tree make_cilk_frame (tree);
1388extern tree create_cilk_function_exit (tree, bool, bool);
1389extern tree cilk_install_body_pedigree_operations (tree);
1390extern void cilk_outline (tree, tree *, void *);
1391extern bool contains_cilk_spawn_stmt (tree);
1392#endif /* ! GCC_C_COMMON_H */
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