1 /* Parser for C and Objective-C.
2 Copyright (C) 1987-2013 Free Software Foundation, Inc.
4 Parser actions based on the old Bison parser; structure somewhat
5 influenced by and fragments based on the C++ parser.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
25 Make sure all relevant comments, and all relevant code from all
26 actions, brought over from old parser. Verify exact correspondence
29 Add testcases covering every input symbol in every state in old and
32 Include full syntax for GNU C, including erroneous cases accepted
33 with error messages, in syntax productions in comments.
35 Make more diagnostics in the front end generally take an explicit
36 location rather than implicitly using input_location. */
40 #include "coretypes.h"
41 #include "tm.h" /* For rtl.h: needs enum reg_class. */
43 #include "stringpool.h"
45 #include "stor-layout.h"
47 #include "trans-mem.h"
48 #include "langhooks.h"
52 #include "c-family/c-pragma.h"
57 #include "c-family/c-common.h"
58 #include "c-family/c-objc.h"
66 /* Initialization routine for this file. */
71 /* The only initialization required is of the reserved word
77 /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in
78 the c_token structure. */
79 gcc_assert (RID_MAX
<= 255);
86 mask
|= D_ASM
| D_EXT
;
90 if (!c_dialect_objc ())
91 mask
|= D_OBJC
| D_CXX_OBJC
;
93 ridpointers
= ggc_alloc_cleared_vec_tree ((int) RID_MAX
);
94 for (i
= 0; i
< num_c_common_reswords
; i
++)
96 /* If a keyword is disabled, do not enter it into the table
97 and so create a canonical spelling that isn't a keyword. */
98 if (c_common_reswords
[i
].disable
& mask
)
101 && (c_common_reswords
[i
].disable
& D_CXXWARN
))
103 id
= get_identifier (c_common_reswords
[i
].word
);
104 C_SET_RID_CODE (id
, RID_CXX_COMPAT_WARN
);
105 C_IS_RESERVED_WORD (id
) = 1;
110 id
= get_identifier (c_common_reswords
[i
].word
);
111 C_SET_RID_CODE (id
, c_common_reswords
[i
].rid
);
112 C_IS_RESERVED_WORD (id
) = 1;
113 ridpointers
[(int) c_common_reswords
[i
].rid
] = id
;
117 /* The C lexer intermediates between the lexer in cpplib and c-lex.c
118 and the C parser. Unlike the C++ lexer, the parser structure
119 stores the lexer information instead of using a separate structure.
120 Identifiers are separated into ordinary identifiers, type names,
121 keywords and some other Objective-C types of identifiers, and some
122 look-ahead is maintained.
124 ??? It might be a good idea to lex the whole file up front (as for
125 C++). It would then be possible to share more of the C and C++
126 lexer code, if desired. */
128 /* The following local token type is used. */
131 #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1))
133 /* More information about the type of a CPP_NAME token. */
134 typedef enum c_id_kind
{
135 /* An ordinary identifier. */
137 /* An identifier declared as a typedef name. */
139 /* An identifier declared as an Objective-C class name. */
141 /* An address space identifier. */
143 /* Not an identifier. */
147 /* A single C token after string literal concatenation and conversion
148 of preprocessing tokens to tokens. */
149 typedef struct GTY (()) c_token
{
150 /* The kind of token. */
151 ENUM_BITFIELD (cpp_ttype
) type
: 8;
152 /* If this token is a CPP_NAME, this value indicates whether also
153 declared as some kind of type. Otherwise, it is C_ID_NONE. */
154 ENUM_BITFIELD (c_id_kind
) id_kind
: 8;
155 /* If this token is a keyword, this value indicates which keyword.
156 Otherwise, this value is RID_MAX. */
157 ENUM_BITFIELD (rid
) keyword
: 8;
158 /* If this token is a CPP_PRAGMA, this indicates the pragma that
159 was seen. Otherwise it is PRAGMA_NONE. */
160 ENUM_BITFIELD (pragma_kind
) pragma_kind
: 8;
161 /* The location at which this token was found. */
163 /* The value associated with this token, if any. */
167 /* A parser structure recording information about the state and
168 context of parsing. Includes lexer information with up to two
169 tokens of look-ahead; more are not needed for C. */
170 typedef struct GTY(()) c_parser
{
171 /* The look-ahead tokens. */
172 c_token
* GTY((skip
)) tokens
;
173 /* Buffer for look-ahead tokens. */
174 c_token tokens_buf
[2];
175 /* How many look-ahead tokens are available (0, 1 or 2, or
176 more if parsing from pre-lexed tokens). */
177 unsigned int tokens_avail
;
178 /* True if a syntax error is being recovered from; false otherwise.
179 c_parser_error sets this flag. It should clear this flag when
180 enough tokens have been consumed to recover from the error. */
181 BOOL_BITFIELD error
: 1;
182 /* True if we're processing a pragma, and shouldn't automatically
183 consume CPP_PRAGMA_EOL. */
184 BOOL_BITFIELD in_pragma
: 1;
185 /* True if we're parsing the outermost block of an if statement. */
186 BOOL_BITFIELD in_if_block
: 1;
187 /* True if we want to lex an untranslated string. */
188 BOOL_BITFIELD lex_untranslated_string
: 1;
190 /* Objective-C specific parser/lexer information. */
192 /* True if we are in a context where the Objective-C "PQ" keywords
193 are considered keywords. */
194 BOOL_BITFIELD objc_pq_context
: 1;
195 /* True if we are parsing a (potential) Objective-C foreach
196 statement. This is set to true after we parsed 'for (' and while
197 we wait for 'in' or ';' to decide if it's a standard C for loop or an
198 Objective-C foreach loop. */
199 BOOL_BITFIELD objc_could_be_foreach_context
: 1;
200 /* The following flag is needed to contextualize Objective-C lexical
201 analysis. In some cases (e.g., 'int NSObject;'), it is
202 undesirable to bind an identifier to an Objective-C class, even
203 if a class with that name exists. */
204 BOOL_BITFIELD objc_need_raw_identifier
: 1;
205 /* Nonzero if we're processing a __transaction statement. The value
206 is 1 | TM_STMT_ATTR_*. */
207 unsigned int in_transaction
: 4;
208 /* True if we are in a context where the Objective-C "Property attribute"
209 keywords are valid. */
210 BOOL_BITFIELD objc_property_attr_context
: 1;
212 /* Cilk Plus specific parser/lexer information. */
214 /* Buffer to hold all the tokens from parsing the vector attribute for the
215 SIMD-enabled functions (formerly known as elemental functions). */
216 vec
<c_token
, va_gc
> *cilk_simd_fn_tokens
;
220 /* The actual parser and external interface. ??? Does this need to be
221 garbage-collected? */
223 static GTY (()) c_parser
*the_parser
;
225 /* Read in and lex a single token, storing it in *TOKEN. */
228 c_lex_one_token (c_parser
*parser
, c_token
*token
)
230 timevar_push (TV_LEX
);
232 token
->type
= c_lex_with_flags (&token
->value
, &token
->location
, NULL
,
233 (parser
->lex_untranslated_string
234 ? C_LEX_STRING_NO_TRANSLATE
: 0));
235 token
->id_kind
= C_ID_NONE
;
236 token
->keyword
= RID_MAX
;
237 token
->pragma_kind
= PRAGMA_NONE
;
245 bool objc_force_identifier
= parser
->objc_need_raw_identifier
;
246 if (c_dialect_objc ())
247 parser
->objc_need_raw_identifier
= false;
249 if (C_IS_RESERVED_WORD (token
->value
))
251 enum rid rid_code
= C_RID_CODE (token
->value
);
253 if (rid_code
== RID_CXX_COMPAT_WARN
)
255 warning_at (token
->location
,
257 "identifier %qE conflicts with C++ keyword",
260 else if (rid_code
>= RID_FIRST_ADDR_SPACE
261 && rid_code
<= RID_LAST_ADDR_SPACE
)
263 token
->id_kind
= C_ID_ADDRSPACE
;
264 token
->keyword
= rid_code
;
267 else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code
))
269 /* We found an Objective-C "pq" keyword (in, out,
270 inout, bycopy, byref, oneway). They need special
271 care because the interpretation depends on the
273 if (parser
->objc_pq_context
)
275 token
->type
= CPP_KEYWORD
;
276 token
->keyword
= rid_code
;
279 else if (parser
->objc_could_be_foreach_context
280 && rid_code
== RID_IN
)
282 /* We are in Objective-C, inside a (potential)
283 foreach context (which means after having
284 parsed 'for (', but before having parsed ';'),
285 and we found 'in'. We consider it the keyword
286 which terminates the declaration at the
287 beginning of a foreach-statement. Note that
288 this means you can't use 'in' for anything else
289 in that context; in particular, in Objective-C
290 you can't use 'in' as the name of the running
291 variable in a C for loop. We could potentially
292 try to add code here to disambiguate, but it
293 seems a reasonable limitation. */
294 token
->type
= CPP_KEYWORD
;
295 token
->keyword
= rid_code
;
298 /* Else, "pq" keywords outside of the "pq" context are
299 not keywords, and we fall through to the code for
302 else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code
))
304 /* We found an Objective-C "property attribute"
305 keyword (getter, setter, readonly, etc). These are
306 only valid in the property context. */
307 if (parser
->objc_property_attr_context
)
309 token
->type
= CPP_KEYWORD
;
310 token
->keyword
= rid_code
;
313 /* Else they are not special keywords.
316 else if (c_dialect_objc ()
317 && (OBJC_IS_AT_KEYWORD (rid_code
)
318 || OBJC_IS_CXX_KEYWORD (rid_code
)))
320 /* We found one of the Objective-C "@" keywords (defs,
321 selector, synchronized, etc) or one of the
322 Objective-C "cxx" keywords (class, private,
323 protected, public, try, catch, throw) without a
324 preceding '@' sign. Do nothing and fall through to
325 the code for normal tokens (in C++ we would still
326 consider the CXX ones keywords, but not in C). */
331 token
->type
= CPP_KEYWORD
;
332 token
->keyword
= rid_code
;
337 decl
= lookup_name (token
->value
);
340 if (TREE_CODE (decl
) == TYPE_DECL
)
342 token
->id_kind
= C_ID_TYPENAME
;
346 else if (c_dialect_objc ())
348 tree objc_interface_decl
= objc_is_class_name (token
->value
);
349 /* Objective-C class names are in the same namespace as
350 variables and typedefs, and hence are shadowed by local
352 if (objc_interface_decl
353 && (!objc_force_identifier
|| global_bindings_p ()))
355 token
->value
= objc_interface_decl
;
356 token
->id_kind
= C_ID_CLASSNAME
;
360 token
->id_kind
= C_ID_ID
;
364 /* This only happens in Objective-C; it must be a keyword. */
365 token
->type
= CPP_KEYWORD
;
366 switch (C_RID_CODE (token
->value
))
368 /* Replace 'class' with '@class', 'private' with '@private',
369 etc. This prevents confusion with the C++ keyword
370 'class', and makes the tokens consistent with other
371 Objective-C 'AT' keywords. For example '@class' is
372 reported as RID_AT_CLASS which is consistent with
373 '@synchronized', which is reported as
376 case RID_CLASS
: token
->keyword
= RID_AT_CLASS
; break;
377 case RID_PRIVATE
: token
->keyword
= RID_AT_PRIVATE
; break;
378 case RID_PROTECTED
: token
->keyword
= RID_AT_PROTECTED
; break;
379 case RID_PUBLIC
: token
->keyword
= RID_AT_PUBLIC
; break;
380 case RID_THROW
: token
->keyword
= RID_AT_THROW
; break;
381 case RID_TRY
: token
->keyword
= RID_AT_TRY
; break;
382 case RID_CATCH
: token
->keyword
= RID_AT_CATCH
; break;
383 default: token
->keyword
= C_RID_CODE (token
->value
);
388 case CPP_CLOSE_PAREN
:
390 /* These tokens may affect the interpretation of any identifiers
391 following, if doing Objective-C. */
392 if (c_dialect_objc ())
393 parser
->objc_need_raw_identifier
= false;
396 /* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */
397 token
->pragma_kind
= (enum pragma_kind
) TREE_INT_CST_LOW (token
->value
);
403 timevar_pop (TV_LEX
);
406 /* Return a pointer to the next token from PARSER, reading it in if
409 static inline c_token
*
410 c_parser_peek_token (c_parser
*parser
)
412 if (parser
->tokens_avail
== 0)
414 c_lex_one_token (parser
, &parser
->tokens
[0]);
415 parser
->tokens_avail
= 1;
417 return &parser
->tokens
[0];
420 /* Return true if the next token from PARSER has the indicated
424 c_parser_next_token_is (c_parser
*parser
, enum cpp_ttype type
)
426 return c_parser_peek_token (parser
)->type
== type
;
429 /* Return true if the next token from PARSER does not have the
433 c_parser_next_token_is_not (c_parser
*parser
, enum cpp_ttype type
)
435 return !c_parser_next_token_is (parser
, type
);
438 /* Return true if the next token from PARSER is the indicated
442 c_parser_next_token_is_keyword (c_parser
*parser
, enum rid keyword
)
444 return c_parser_peek_token (parser
)->keyword
== keyword
;
447 /* Return a pointer to the next-but-one token from PARSER, reading it
448 in if necessary. The next token is already read in. */
451 c_parser_peek_2nd_token (c_parser
*parser
)
453 if (parser
->tokens_avail
>= 2)
454 return &parser
->tokens
[1];
455 gcc_assert (parser
->tokens_avail
== 1);
456 gcc_assert (parser
->tokens
[0].type
!= CPP_EOF
);
457 gcc_assert (parser
->tokens
[0].type
!= CPP_PRAGMA_EOL
);
458 c_lex_one_token (parser
, &parser
->tokens
[1]);
459 parser
->tokens_avail
= 2;
460 return &parser
->tokens
[1];
463 /* Return true if TOKEN can start a type name,
466 c_token_starts_typename (c_token
*token
)
471 switch (token
->id_kind
)
480 gcc_assert (c_dialect_objc ());
486 switch (token
->keyword
)
521 if (c_dialect_objc ())
529 enum c_lookahead_kind
{
530 /* Always treat unknown identifiers as typenames. */
533 /* Could be parsing a nonabstract declarator. Only treat an identifier
534 as a typename if followed by another identifier or a star. */
535 cla_nonabstract_decl
,
537 /* Never treat identifiers as typenames. */
541 /* Return true if the next token from PARSER can start a type name,
542 false otherwise. LA specifies how to do lookahead in order to
543 detect unknown type names. If unsure, pick CLA_PREFER_ID. */
546 c_parser_next_tokens_start_typename (c_parser
*parser
, enum c_lookahead_kind la
)
548 c_token
*token
= c_parser_peek_token (parser
);
549 if (c_token_starts_typename (token
))
552 /* Try a bit harder to detect an unknown typename. */
553 if (la
!= cla_prefer_id
554 && token
->type
== CPP_NAME
555 && token
->id_kind
== C_ID_ID
557 /* Do not try too hard when we could have "object in array". */
558 && !parser
->objc_could_be_foreach_context
560 && (la
== cla_prefer_type
561 || c_parser_peek_2nd_token (parser
)->type
== CPP_NAME
562 || c_parser_peek_2nd_token (parser
)->type
== CPP_MULT
)
564 /* Only unknown identifiers. */
565 && !lookup_name (token
->value
))
571 /* Return true if TOKEN is a type qualifier, false otherwise. */
573 c_token_is_qualifier (c_token
*token
)
578 switch (token
->id_kind
)
586 switch (token
->keyword
)
604 /* Return true if the next token from PARSER is a type qualifier,
607 c_parser_next_token_is_qualifier (c_parser
*parser
)
609 c_token
*token
= c_parser_peek_token (parser
);
610 return c_token_is_qualifier (token
);
613 /* Return true if TOKEN can start declaration specifiers, false
616 c_token_starts_declspecs (c_token
*token
)
621 switch (token
->id_kind
)
630 gcc_assert (c_dialect_objc ());
636 switch (token
->keyword
)
680 if (c_dialect_objc ())
689 /* Return true if TOKEN can start declaration specifiers or a static
690 assertion, false otherwise. */
692 c_token_starts_declaration (c_token
*token
)
694 if (c_token_starts_declspecs (token
)
695 || token
->keyword
== RID_STATIC_ASSERT
)
701 /* Return true if the next token from PARSER can start declaration
702 specifiers, false otherwise. */
704 c_parser_next_token_starts_declspecs (c_parser
*parser
)
706 c_token
*token
= c_parser_peek_token (parser
);
708 /* In Objective-C, a classname normally starts a declspecs unless it
709 is immediately followed by a dot. In that case, it is the
710 Objective-C 2.0 "dot-syntax" for class objects, ie, calls the
711 setter/getter on the class. c_token_starts_declspecs() can't
712 differentiate between the two cases because it only checks the
713 current token, so we have a special check here. */
714 if (c_dialect_objc ()
715 && token
->type
== CPP_NAME
716 && token
->id_kind
== C_ID_CLASSNAME
717 && c_parser_peek_2nd_token (parser
)->type
== CPP_DOT
)
720 return c_token_starts_declspecs (token
);
723 /* Return true if the next tokens from PARSER can start declaration
724 specifiers or a static assertion, false otherwise. */
726 c_parser_next_tokens_start_declaration (c_parser
*parser
)
728 c_token
*token
= c_parser_peek_token (parser
);
731 if (c_dialect_objc ()
732 && token
->type
== CPP_NAME
733 && token
->id_kind
== C_ID_CLASSNAME
734 && c_parser_peek_2nd_token (parser
)->type
== CPP_DOT
)
737 /* Labels do not start declarations. */
738 if (token
->type
== CPP_NAME
739 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
)
742 if (c_token_starts_declaration (token
))
745 if (c_parser_next_tokens_start_typename (parser
, cla_nonabstract_decl
))
751 /* Consume the next token from PARSER. */
754 c_parser_consume_token (c_parser
*parser
)
756 gcc_assert (parser
->tokens_avail
>= 1);
757 gcc_assert (parser
->tokens
[0].type
!= CPP_EOF
);
758 gcc_assert (!parser
->in_pragma
|| parser
->tokens
[0].type
!= CPP_PRAGMA_EOL
);
759 gcc_assert (parser
->error
|| parser
->tokens
[0].type
!= CPP_PRAGMA
);
760 if (parser
->tokens
!= &parser
->tokens_buf
[0])
762 else if (parser
->tokens_avail
== 2)
763 parser
->tokens
[0] = parser
->tokens
[1];
764 parser
->tokens_avail
--;
767 /* Expect the current token to be a #pragma. Consume it and remember
768 that we've begun parsing a pragma. */
771 c_parser_consume_pragma (c_parser
*parser
)
773 gcc_assert (!parser
->in_pragma
);
774 gcc_assert (parser
->tokens_avail
>= 1);
775 gcc_assert (parser
->tokens
[0].type
== CPP_PRAGMA
);
776 if (parser
->tokens
!= &parser
->tokens_buf
[0])
778 else if (parser
->tokens_avail
== 2)
779 parser
->tokens
[0] = parser
->tokens
[1];
780 parser
->tokens_avail
--;
781 parser
->in_pragma
= true;
784 /* Update the global input_location from TOKEN. */
786 c_parser_set_source_position_from_token (c_token
*token
)
788 if (token
->type
!= CPP_EOF
)
790 input_location
= token
->location
;
794 /* Issue a diagnostic of the form
795 FILE:LINE: MESSAGE before TOKEN
796 where TOKEN is the next token in the input stream of PARSER.
797 MESSAGE (specified by the caller) is usually of the form "expected
800 Do not issue a diagnostic if still recovering from an error.
802 ??? This is taken from the C++ parser, but building up messages in
803 this way is not i18n-friendly and some other approach should be
807 c_parser_error (c_parser
*parser
, const char *gmsgid
)
809 c_token
*token
= c_parser_peek_token (parser
);
812 parser
->error
= true;
815 /* This diagnostic makes more sense if it is tagged to the line of
816 the token we just peeked at. */
817 c_parser_set_source_position_from_token (token
);
818 c_parse_error (gmsgid
,
819 /* Because c_parse_error does not understand
820 CPP_KEYWORD, keywords are treated like
822 (token
->type
== CPP_KEYWORD
? CPP_NAME
: token
->type
),
823 /* ??? The C parser does not save the cpp flags of a
824 token, we need to pass 0 here and we will not get
825 the source spelling of some tokens but rather the
826 canonical spelling. */
827 token
->value
, /*flags=*/0);
830 /* If the next token is of the indicated TYPE, consume it. Otherwise,
831 issue the error MSGID. If MSGID is NULL then a message has already
832 been produced and no message will be produced this time. Returns
833 true if found, false otherwise. */
836 c_parser_require (c_parser
*parser
,
840 if (c_parser_next_token_is (parser
, type
))
842 c_parser_consume_token (parser
);
847 c_parser_error (parser
, msgid
);
852 /* If the next token is the indicated keyword, consume it. Otherwise,
853 issue the error MSGID. Returns true if found, false otherwise. */
856 c_parser_require_keyword (c_parser
*parser
,
860 if (c_parser_next_token_is_keyword (parser
, keyword
))
862 c_parser_consume_token (parser
);
867 c_parser_error (parser
, msgid
);
872 /* Like c_parser_require, except that tokens will be skipped until the
873 desired token is found. An error message is still produced if the
874 next token is not as expected. If MSGID is NULL then a message has
875 already been produced and no message will be produced this
879 c_parser_skip_until_found (c_parser
*parser
,
883 unsigned nesting_depth
= 0;
885 if (c_parser_require (parser
, type
, msgid
))
888 /* Skip tokens until the desired token is found. */
891 /* Peek at the next token. */
892 c_token
*token
= c_parser_peek_token (parser
);
893 /* If we've reached the token we want, consume it and stop. */
894 if (token
->type
== type
&& !nesting_depth
)
896 c_parser_consume_token (parser
);
900 /* If we've run out of tokens, stop. */
901 if (token
->type
== CPP_EOF
)
903 if (token
->type
== CPP_PRAGMA_EOL
&& parser
->in_pragma
)
905 if (token
->type
== CPP_OPEN_BRACE
906 || token
->type
== CPP_OPEN_PAREN
907 || token
->type
== CPP_OPEN_SQUARE
)
909 else if (token
->type
== CPP_CLOSE_BRACE
910 || token
->type
== CPP_CLOSE_PAREN
911 || token
->type
== CPP_CLOSE_SQUARE
)
913 if (nesting_depth
-- == 0)
916 /* Consume this token. */
917 c_parser_consume_token (parser
);
919 parser
->error
= false;
922 /* Skip tokens until the end of a parameter is found, but do not
923 consume the comma, semicolon or closing delimiter. */
926 c_parser_skip_to_end_of_parameter (c_parser
*parser
)
928 unsigned nesting_depth
= 0;
932 c_token
*token
= c_parser_peek_token (parser
);
933 if ((token
->type
== CPP_COMMA
|| token
->type
== CPP_SEMICOLON
)
936 /* If we've run out of tokens, stop. */
937 if (token
->type
== CPP_EOF
)
939 if (token
->type
== CPP_PRAGMA_EOL
&& parser
->in_pragma
)
941 if (token
->type
== CPP_OPEN_BRACE
942 || token
->type
== CPP_OPEN_PAREN
943 || token
->type
== CPP_OPEN_SQUARE
)
945 else if (token
->type
== CPP_CLOSE_BRACE
946 || token
->type
== CPP_CLOSE_PAREN
947 || token
->type
== CPP_CLOSE_SQUARE
)
949 if (nesting_depth
-- == 0)
952 /* Consume this token. */
953 c_parser_consume_token (parser
);
955 parser
->error
= false;
958 /* Expect to be at the end of the pragma directive and consume an
959 end of line marker. */
962 c_parser_skip_to_pragma_eol (c_parser
*parser
)
964 gcc_assert (parser
->in_pragma
);
965 parser
->in_pragma
= false;
967 if (!c_parser_require (parser
, CPP_PRAGMA_EOL
, "expected end of line"))
970 c_token
*token
= c_parser_peek_token (parser
);
971 if (token
->type
== CPP_EOF
)
973 if (token
->type
== CPP_PRAGMA_EOL
)
975 c_parser_consume_token (parser
);
978 c_parser_consume_token (parser
);
981 parser
->error
= false;
984 /* Skip tokens until we have consumed an entire block, or until we
985 have consumed a non-nested ';'. */
988 c_parser_skip_to_end_of_block_or_statement (c_parser
*parser
)
990 unsigned nesting_depth
= 0;
991 bool save_error
= parser
->error
;
997 /* Peek at the next token. */
998 token
= c_parser_peek_token (parser
);
1000 switch (token
->type
)
1005 case CPP_PRAGMA_EOL
:
1006 if (parser
->in_pragma
)
1011 /* If the next token is a ';', we have reached the
1012 end of the statement. */
1015 /* Consume the ';'. */
1016 c_parser_consume_token (parser
);
1021 case CPP_CLOSE_BRACE
:
1022 /* If the next token is a non-nested '}', then we have
1023 reached the end of the current block. */
1024 if (nesting_depth
== 0 || --nesting_depth
== 0)
1026 c_parser_consume_token (parser
);
1031 case CPP_OPEN_BRACE
:
1032 /* If it the next token is a '{', then we are entering a new
1033 block. Consume the entire block. */
1038 /* If we see a pragma, consume the whole thing at once. We
1039 have some safeguards against consuming pragmas willy-nilly.
1040 Normally, we'd expect to be here with parser->error set,
1041 which disables these safeguards. But it's possible to get
1042 here for secondary error recovery, after parser->error has
1044 c_parser_consume_pragma (parser
);
1045 c_parser_skip_to_pragma_eol (parser
);
1046 parser
->error
= save_error
;
1053 c_parser_consume_token (parser
);
1057 parser
->error
= false;
1060 /* CPP's options (initialized by c-opts.c). */
1061 extern cpp_options
*cpp_opts
;
1063 /* Save the warning flags which are controlled by __extension__. */
1066 disable_extension_diagnostics (void)
1069 | (warn_pointer_arith
<< 1)
1070 | (warn_traditional
<< 2)
1072 | (warn_long_long
<< 4)
1073 | (warn_cxx_compat
<< 5)
1074 | (warn_overlength_strings
<< 6));
1075 cpp_opts
->cpp_pedantic
= pedantic
= 0;
1076 warn_pointer_arith
= 0;
1077 cpp_opts
->cpp_warn_traditional
= warn_traditional
= 0;
1079 cpp_opts
->cpp_warn_long_long
= warn_long_long
= 0;
1080 warn_cxx_compat
= 0;
1081 warn_overlength_strings
= 0;
1085 /* Restore the warning flags which are controlled by __extension__.
1086 FLAGS is the return value from disable_extension_diagnostics. */
1089 restore_extension_diagnostics (int flags
)
1091 cpp_opts
->cpp_pedantic
= pedantic
= flags
& 1;
1092 warn_pointer_arith
= (flags
>> 1) & 1;
1093 cpp_opts
->cpp_warn_traditional
= warn_traditional
= (flags
>> 2) & 1;
1094 flag_iso
= (flags
>> 3) & 1;
1095 cpp_opts
->cpp_warn_long_long
= warn_long_long
= (flags
>> 4) & 1;
1096 warn_cxx_compat
= (flags
>> 5) & 1;
1097 warn_overlength_strings
= (flags
>> 6) & 1;
1100 /* Possibly kinds of declarator to parse. */
1101 typedef enum c_dtr_syn
{
1102 /* A normal declarator with an identifier. */
1104 /* An abstract declarator (maybe empty). */
1106 /* A parameter declarator: may be either, but after a type name does
1107 not redeclare a typedef name as an identifier if it can
1108 alternatively be interpreted as a typedef name; see DR#009,
1109 applied in C90 TC1, omitted from C99 and reapplied in C99 TC2
1110 following DR#249. For example, given a typedef T, "int T" and
1111 "int *T" are valid parameter declarations redeclaring T, while
1112 "int (T)" and "int * (T)" and "int (T[])" and "int (T (int))" are
1113 abstract declarators rather than involving redundant parentheses;
1114 the same applies with attributes inside the parentheses before
1119 /* The binary operation precedence levels, where 0 is a dummy lowest level
1120 used for the bottom of the stack. */
1121 enum c_parser_prec
{
1136 static void c_parser_external_declaration (c_parser
*);
1137 static void c_parser_asm_definition (c_parser
*);
1138 static void c_parser_declaration_or_fndef (c_parser
*, bool, bool, bool,
1139 bool, bool, tree
*, vec
<c_token
>);
1140 static void c_parser_static_assert_declaration_no_semi (c_parser
*);
1141 static void c_parser_static_assert_declaration (c_parser
*);
1142 static void c_parser_declspecs (c_parser
*, struct c_declspecs
*, bool, bool,
1143 bool, bool, bool, enum c_lookahead_kind
);
1144 static struct c_typespec
c_parser_enum_specifier (c_parser
*);
1145 static struct c_typespec
c_parser_struct_or_union_specifier (c_parser
*);
1146 static tree
c_parser_struct_declaration (c_parser
*);
1147 static struct c_typespec
c_parser_typeof_specifier (c_parser
*);
1148 static tree
c_parser_alignas_specifier (c_parser
*);
1149 static struct c_declarator
*c_parser_declarator (c_parser
*, bool, c_dtr_syn
,
1151 static struct c_declarator
*c_parser_direct_declarator (c_parser
*, bool,
1153 static struct c_declarator
*c_parser_direct_declarator_inner (c_parser
*,
1155 struct c_declarator
*);
1156 static struct c_arg_info
*c_parser_parms_declarator (c_parser
*, bool, tree
);
1157 static struct c_arg_info
*c_parser_parms_list_declarator (c_parser
*, tree
,
1159 static struct c_parm
*c_parser_parameter_declaration (c_parser
*, tree
);
1160 static tree
c_parser_simple_asm_expr (c_parser
*);
1161 static tree
c_parser_attributes (c_parser
*);
1162 static struct c_type_name
*c_parser_type_name (c_parser
*);
1163 static struct c_expr
c_parser_initializer (c_parser
*);
1164 static struct c_expr
c_parser_braced_init (c_parser
*, tree
, bool);
1165 static void c_parser_initelt (c_parser
*, struct obstack
*);
1166 static void c_parser_initval (c_parser
*, struct c_expr
*,
1168 static tree
c_parser_compound_statement (c_parser
*);
1169 static void c_parser_compound_statement_nostart (c_parser
*);
1170 static void c_parser_label (c_parser
*);
1171 static void c_parser_statement (c_parser
*);
1172 static void c_parser_statement_after_labels (c_parser
*);
1173 static void c_parser_if_statement (c_parser
*);
1174 static void c_parser_switch_statement (c_parser
*);
1175 static void c_parser_while_statement (c_parser
*, bool);
1176 static void c_parser_do_statement (c_parser
*, bool);
1177 static void c_parser_for_statement (c_parser
*, bool);
1178 static tree
c_parser_asm_statement (c_parser
*);
1179 static tree
c_parser_asm_operands (c_parser
*);
1180 static tree
c_parser_asm_goto_operands (c_parser
*);
1181 static tree
c_parser_asm_clobbers (c_parser
*);
1182 static struct c_expr
c_parser_expr_no_commas (c_parser
*, struct c_expr
*,
1184 static struct c_expr
c_parser_conditional_expression (c_parser
*,
1185 struct c_expr
*, tree
);
1186 static struct c_expr
c_parser_binary_expression (c_parser
*, struct c_expr
*,
1188 static struct c_expr
c_parser_cast_expression (c_parser
*, struct c_expr
*);
1189 static struct c_expr
c_parser_unary_expression (c_parser
*);
1190 static struct c_expr
c_parser_sizeof_expression (c_parser
*);
1191 static struct c_expr
c_parser_alignof_expression (c_parser
*);
1192 static struct c_expr
c_parser_postfix_expression (c_parser
*);
1193 static struct c_expr
c_parser_postfix_expression_after_paren_type (c_parser
*,
1194 struct c_type_name
*,
1196 static struct c_expr
c_parser_postfix_expression_after_primary (c_parser
*,
1199 static tree
c_parser_transaction (c_parser
*, enum rid
);
1200 static struct c_expr
c_parser_transaction_expression (c_parser
*, enum rid
);
1201 static tree
c_parser_transaction_cancel (c_parser
*);
1202 static struct c_expr
c_parser_expression (c_parser
*);
1203 static struct c_expr
c_parser_expression_conv (c_parser
*);
1204 static vec
<tree
, va_gc
> *c_parser_expr_list (c_parser
*, bool, bool,
1205 vec
<tree
, va_gc
> **, location_t
*,
1207 static void c_parser_omp_construct (c_parser
*);
1208 static void c_parser_omp_threadprivate (c_parser
*);
1209 static void c_parser_omp_barrier (c_parser
*);
1210 static void c_parser_omp_flush (c_parser
*);
1211 static void c_parser_omp_taskwait (c_parser
*);
1212 static void c_parser_omp_taskyield (c_parser
*);
1213 static void c_parser_omp_cancel (c_parser
*);
1214 static void c_parser_omp_cancellation_point (c_parser
*);
1216 enum pragma_context
{ pragma_external
, pragma_struct
, pragma_param
,
1217 pragma_stmt
, pragma_compound
};
1218 static bool c_parser_pragma (c_parser
*, enum pragma_context
);
1219 static bool c_parser_omp_target (c_parser
*, enum pragma_context
);
1220 static void c_parser_omp_end_declare_target (c_parser
*);
1221 static void c_parser_omp_declare (c_parser
*, enum pragma_context
);
1223 /* These Objective-C parser functions are only ever called when
1224 compiling Objective-C. */
1225 static void c_parser_objc_class_definition (c_parser
*, tree
);
1226 static void c_parser_objc_class_instance_variables (c_parser
*);
1227 static void c_parser_objc_class_declaration (c_parser
*);
1228 static void c_parser_objc_alias_declaration (c_parser
*);
1229 static void c_parser_objc_protocol_definition (c_parser
*, tree
);
1230 static bool c_parser_objc_method_type (c_parser
*);
1231 static void c_parser_objc_method_definition (c_parser
*);
1232 static void c_parser_objc_methodprotolist (c_parser
*);
1233 static void c_parser_objc_methodproto (c_parser
*);
1234 static tree
c_parser_objc_method_decl (c_parser
*, bool, tree
*, tree
*);
1235 static tree
c_parser_objc_type_name (c_parser
*);
1236 static tree
c_parser_objc_protocol_refs (c_parser
*);
1237 static void c_parser_objc_try_catch_finally_statement (c_parser
*);
1238 static void c_parser_objc_synchronized_statement (c_parser
*);
1239 static tree
c_parser_objc_selector (c_parser
*);
1240 static tree
c_parser_objc_selector_arg (c_parser
*);
1241 static tree
c_parser_objc_receiver (c_parser
*);
1242 static tree
c_parser_objc_message_args (c_parser
*);
1243 static tree
c_parser_objc_keywordexpr (c_parser
*);
1244 static void c_parser_objc_at_property_declaration (c_parser
*);
1245 static void c_parser_objc_at_synthesize_declaration (c_parser
*);
1246 static void c_parser_objc_at_dynamic_declaration (c_parser
*);
1247 static bool c_parser_objc_diagnose_bad_element_prefix
1248 (c_parser
*, struct c_declspecs
*);
1250 /* Cilk Plus supporting routines. */
1251 static void c_parser_cilk_simd (c_parser
*);
1252 static bool c_parser_cilk_verify_simd (c_parser
*, enum pragma_context
);
1253 static tree
c_parser_array_notation (location_t
, c_parser
*, tree
, tree
);
1254 static tree
c_parser_cilk_clause_vectorlength (c_parser
*, tree
, bool);
1256 /* Parse a translation unit (C90 6.7, C99 6.9).
1259 external-declarations
1261 external-declarations:
1262 external-declaration
1263 external-declarations external-declaration
1272 c_parser_translation_unit (c_parser
*parser
)
1274 if (c_parser_next_token_is (parser
, CPP_EOF
))
1276 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
1277 "ISO C forbids an empty translation unit");
1281 void *obstack_position
= obstack_alloc (&parser_obstack
, 0);
1282 mark_valid_location_for_stdc_pragma (false);
1286 c_parser_external_declaration (parser
);
1287 obstack_free (&parser_obstack
, obstack_position
);
1289 while (c_parser_next_token_is_not (parser
, CPP_EOF
));
1293 /* Parse an external declaration (C90 6.7, C99 6.9).
1295 external-declaration:
1301 external-declaration:
1304 __extension__ external-declaration
1308 external-declaration:
1309 objc-class-definition
1310 objc-class-declaration
1311 objc-alias-declaration
1312 objc-protocol-definition
1313 objc-method-definition
1318 c_parser_external_declaration (c_parser
*parser
)
1321 switch (c_parser_peek_token (parser
)->type
)
1324 switch (c_parser_peek_token (parser
)->keyword
)
1327 ext
= disable_extension_diagnostics ();
1328 c_parser_consume_token (parser
);
1329 c_parser_external_declaration (parser
);
1330 restore_extension_diagnostics (ext
);
1333 c_parser_asm_definition (parser
);
1335 case RID_AT_INTERFACE
:
1336 case RID_AT_IMPLEMENTATION
:
1337 gcc_assert (c_dialect_objc ());
1338 c_parser_objc_class_definition (parser
, NULL_TREE
);
1341 gcc_assert (c_dialect_objc ());
1342 c_parser_objc_class_declaration (parser
);
1345 gcc_assert (c_dialect_objc ());
1346 c_parser_objc_alias_declaration (parser
);
1348 case RID_AT_PROTOCOL
:
1349 gcc_assert (c_dialect_objc ());
1350 c_parser_objc_protocol_definition (parser
, NULL_TREE
);
1352 case RID_AT_PROPERTY
:
1353 gcc_assert (c_dialect_objc ());
1354 c_parser_objc_at_property_declaration (parser
);
1356 case RID_AT_SYNTHESIZE
:
1357 gcc_assert (c_dialect_objc ());
1358 c_parser_objc_at_synthesize_declaration (parser
);
1360 case RID_AT_DYNAMIC
:
1361 gcc_assert (c_dialect_objc ());
1362 c_parser_objc_at_dynamic_declaration (parser
);
1365 gcc_assert (c_dialect_objc ());
1366 c_parser_consume_token (parser
);
1367 objc_finish_implementation ();
1374 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
1375 "ISO C does not allow extra %<;%> outside of a function");
1376 c_parser_consume_token (parser
);
1379 mark_valid_location_for_stdc_pragma (true);
1380 c_parser_pragma (parser
, pragma_external
);
1381 mark_valid_location_for_stdc_pragma (false);
1385 if (c_dialect_objc ())
1387 c_parser_objc_method_definition (parser
);
1390 /* Else fall through, and yield a syntax error trying to parse
1391 as a declaration or function definition. */
1394 /* A declaration or a function definition (or, in Objective-C,
1395 an @interface or @protocol with prefix attributes). We can
1396 only tell which after parsing the declaration specifiers, if
1397 any, and the first declarator. */
1398 c_parser_declaration_or_fndef (parser
, true, true, true, false, true,
1404 static void c_finish_omp_declare_simd (c_parser
*, tree
, tree
, vec
<c_token
>);
1406 /* Parse a declaration or function definition (C90 6.5, 6.7.1, C99
1407 6.7, 6.9.1). If FNDEF_OK is true, a function definition is
1408 accepted; otherwise (old-style parameter declarations) only other
1409 declarations are accepted. If STATIC_ASSERT_OK is true, a static
1410 assertion is accepted; otherwise (old-style parameter declarations)
1411 it is not. If NESTED is true, we are inside a function or parsing
1412 old-style parameter declarations; any functions encountered are
1413 nested functions and declaration specifiers are required; otherwise
1414 we are at top level and functions are normal functions and
1415 declaration specifiers may be optional. If EMPTY_OK is true, empty
1416 declarations are OK (subject to all other constraints); otherwise
1417 (old-style parameter declarations) they are diagnosed. If
1418 START_ATTR_OK is true, the declaration specifiers may start with
1419 attributes; otherwise they may not.
1420 OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed
1421 declaration when parsing an Objective-C foreach statement.
1424 declaration-specifiers init-declarator-list[opt] ;
1425 static_assert-declaration
1427 function-definition:
1428 declaration-specifiers[opt] declarator declaration-list[opt]
1433 declaration-list declaration
1435 init-declarator-list:
1437 init-declarator-list , init-declarator
1440 declarator simple-asm-expr[opt] attributes[opt]
1441 declarator simple-asm-expr[opt] attributes[opt] = initializer
1445 nested-function-definition:
1446 declaration-specifiers declarator declaration-list[opt]
1450 attributes objc-class-definition
1451 attributes objc-category-definition
1452 attributes objc-protocol-definition
1454 The simple-asm-expr and attributes are GNU extensions.
1456 This function does not handle __extension__; that is handled in its
1457 callers. ??? Following the old parser, __extension__ may start
1458 external declarations, declarations in functions and declarations
1459 at the start of "for" loops, but not old-style parameter
1462 C99 requires declaration specifiers in a function definition; the
1463 absence is diagnosed through the diagnosis of implicit int. In GNU
1464 C we also allow but diagnose declarations without declaration
1465 specifiers, but only at top level (elsewhere they conflict with
1468 In Objective-C, declarations of the looping variable in a foreach
1469 statement are exceptionally terminated by 'in' (for example, 'for
1470 (NSObject *object in array) { ... }').
1475 threadprivate-directive */
1478 c_parser_declaration_or_fndef (c_parser
*parser
, bool fndef_ok
,
1479 bool static_assert_ok
, bool empty_ok
,
1480 bool nested
, bool start_attr_ok
,
1481 tree
*objc_foreach_object_declaration
,
1482 vec
<c_token
> omp_declare_simd_clauses
)
1484 struct c_declspecs
*specs
;
1486 tree all_prefix_attrs
;
1487 bool diagnosed_no_specs
= false;
1488 location_t here
= c_parser_peek_token (parser
)->location
;
1490 if (static_assert_ok
1491 && c_parser_next_token_is_keyword (parser
, RID_STATIC_ASSERT
))
1493 c_parser_static_assert_declaration (parser
);
1496 specs
= build_null_declspecs ();
1498 /* Try to detect an unknown type name when we have "A B" or "A *B". */
1499 if (c_parser_peek_token (parser
)->type
== CPP_NAME
1500 && c_parser_peek_token (parser
)->id_kind
== C_ID_ID
1501 && (c_parser_peek_2nd_token (parser
)->type
== CPP_NAME
1502 || c_parser_peek_2nd_token (parser
)->type
== CPP_MULT
)
1503 && (!nested
|| !lookup_name (c_parser_peek_token (parser
)->value
)))
1505 error_at (here
, "unknown type name %qE",
1506 c_parser_peek_token (parser
)->value
);
1508 /* Parse declspecs normally to get a correct pointer type, but avoid
1509 a further "fails to be a type name" error. Refuse nested functions
1510 since it is not how the user likely wants us to recover. */
1511 c_parser_peek_token (parser
)->type
= CPP_KEYWORD
;
1512 c_parser_peek_token (parser
)->keyword
= RID_VOID
;
1513 c_parser_peek_token (parser
)->value
= error_mark_node
;
1517 c_parser_declspecs (parser
, specs
, true, true, start_attr_ok
,
1518 true, true, cla_nonabstract_decl
);
1521 c_parser_skip_to_end_of_block_or_statement (parser
);
1524 if (nested
&& !specs
->declspecs_seen_p
)
1526 c_parser_error (parser
, "expected declaration specifiers");
1527 c_parser_skip_to_end_of_block_or_statement (parser
);
1530 finish_declspecs (specs
);
1531 bool auto_type_p
= specs
->typespec_word
== cts_auto_type
;
1532 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
1535 error_at (here
, "%<__auto_type%> in empty declaration");
1540 shadow_tag_warned (specs
, 1);
1541 pedwarn (here
, 0, "empty declaration");
1543 c_parser_consume_token (parser
);
1547 /* Provide better error recovery. Note that a type name here is usually
1548 better diagnosed as a redeclaration. */
1550 && specs
->typespec_kind
== ctsk_tagdef
1551 && c_parser_next_token_starts_declspecs (parser
)
1552 && !c_parser_next_token_is (parser
, CPP_NAME
))
1554 c_parser_error (parser
, "expected %<;%>, identifier or %<(%>");
1555 parser
->error
= false;
1556 shadow_tag_warned (specs
, 1);
1559 else if (c_dialect_objc () && !auto_type_p
)
1561 /* Prefix attributes are an error on method decls. */
1562 switch (c_parser_peek_token (parser
)->type
)
1566 if (c_parser_objc_diagnose_bad_element_prefix (parser
, specs
))
1570 warning_at (c_parser_peek_token (parser
)->location
,
1572 "prefix attributes are ignored for methods");
1573 specs
->attrs
= NULL_TREE
;
1576 c_parser_objc_method_definition (parser
);
1578 c_parser_objc_methodproto (parser
);
1584 /* This is where we parse 'attributes @interface ...',
1585 'attributes @implementation ...', 'attributes @protocol ...'
1586 (where attributes could be, for example, __attribute__
1589 switch (c_parser_peek_token (parser
)->keyword
)
1591 case RID_AT_INTERFACE
:
1593 if (c_parser_objc_diagnose_bad_element_prefix (parser
, specs
))
1595 c_parser_objc_class_definition (parser
, specs
->attrs
);
1599 case RID_AT_IMPLEMENTATION
:
1601 if (c_parser_objc_diagnose_bad_element_prefix (parser
, specs
))
1605 warning_at (c_parser_peek_token (parser
)->location
,
1607 "prefix attributes are ignored for implementations");
1608 specs
->attrs
= NULL_TREE
;
1610 c_parser_objc_class_definition (parser
, NULL_TREE
);
1614 case RID_AT_PROTOCOL
:
1616 if (c_parser_objc_diagnose_bad_element_prefix (parser
, specs
))
1618 c_parser_objc_protocol_definition (parser
, specs
->attrs
);
1625 case RID_AT_PROPERTY
:
1628 c_parser_error (parser
, "unexpected attribute");
1629 specs
->attrs
= NULL
;
1637 pending_xref_error ();
1638 prefix_attrs
= specs
->attrs
;
1639 all_prefix_attrs
= prefix_attrs
;
1640 specs
->attrs
= NULL_TREE
;
1643 struct c_declarator
*declarator
;
1647 /* Declaring either one or more declarators (in which case we
1648 should diagnose if there were no declaration specifiers) or a
1649 function definition (in which case the diagnostic for
1650 implicit int suffices). */
1651 declarator
= c_parser_declarator (parser
,
1652 specs
->typespec_kind
!= ctsk_none
,
1653 C_DTR_NORMAL
, &dummy
);
1654 if (declarator
== NULL
)
1656 if (omp_declare_simd_clauses
.exists ()
1657 || !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
1658 c_finish_omp_declare_simd (parser
, NULL_TREE
, NULL_TREE
,
1659 omp_declare_simd_clauses
);
1660 c_parser_skip_to_end_of_block_or_statement (parser
);
1663 if (auto_type_p
&& declarator
->kind
!= cdk_id
)
1666 "%<__auto_type%> requires a plain identifier"
1668 c_parser_skip_to_end_of_block_or_statement (parser
);
1671 if (c_parser_next_token_is (parser
, CPP_EQ
)
1672 || c_parser_next_token_is (parser
, CPP_COMMA
)
1673 || c_parser_next_token_is (parser
, CPP_SEMICOLON
)
1674 || c_parser_next_token_is_keyword (parser
, RID_ASM
)
1675 || c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
)
1676 || c_parser_next_token_is_keyword (parser
, RID_IN
))
1678 tree asm_name
= NULL_TREE
;
1679 tree postfix_attrs
= NULL_TREE
;
1680 if (!diagnosed_no_specs
&& !specs
->declspecs_seen_p
)
1682 diagnosed_no_specs
= true;
1683 pedwarn (here
, 0, "data definition has no type or storage class");
1685 /* Having seen a data definition, there cannot now be a
1686 function definition. */
1688 if (c_parser_next_token_is_keyword (parser
, RID_ASM
))
1689 asm_name
= c_parser_simple_asm_expr (parser
);
1690 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
1691 postfix_attrs
= c_parser_attributes (parser
);
1692 if (c_parser_next_token_is (parser
, CPP_EQ
))
1696 location_t init_loc
;
1697 c_parser_consume_token (parser
);
1700 start_init (NULL_TREE
, asm_name
, global_bindings_p ());
1701 init_loc
= c_parser_peek_token (parser
)->location
;
1702 init
= c_parser_expr_no_commas (parser
, NULL
);
1703 if (TREE_CODE (init
.value
) == COMPONENT_REF
1704 && DECL_C_BIT_FIELD (TREE_OPERAND (init
.value
, 1)))
1706 "%<__auto_type%> used with a bit-field"
1708 init
= convert_lvalue_to_rvalue (init_loc
, init
, true, true);
1709 tree init_type
= TREE_TYPE (init
.value
);
1710 /* As with typeof, remove _Atomic and const
1711 qualifiers from atomic types. */
1712 if (init_type
!= error_mark_node
&& TYPE_ATOMIC (init_type
))
1714 = c_build_qualified_type (init_type
,
1715 (TYPE_QUALS (init_type
)
1716 & ~(TYPE_QUAL_ATOMIC
1717 | TYPE_QUAL_CONST
)));
1718 bool vm_type
= variably_modified_type_p (init_type
,
1721 init
.value
= c_save_expr (init
.value
);
1723 specs
->typespec_kind
= ctsk_typeof
;
1724 specs
->locations
[cdw_typedef
] = init_loc
;
1725 specs
->typedef_p
= true;
1726 specs
->type
= init_type
;
1729 bool maybe_const
= true;
1730 tree type_expr
= c_fully_fold (init
.value
, false,
1732 specs
->expr_const_operands
&= maybe_const
;
1734 specs
->expr
= build2 (COMPOUND_EXPR
,
1735 TREE_TYPE (type_expr
),
1736 specs
->expr
, type_expr
);
1738 specs
->expr
= type_expr
;
1740 d
= start_decl (declarator
, specs
, true,
1741 chainon (postfix_attrs
, all_prefix_attrs
));
1743 d
= error_mark_node
;
1744 if (omp_declare_simd_clauses
.exists ()
1745 || !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
1746 c_finish_omp_declare_simd (parser
, d
, NULL_TREE
,
1747 omp_declare_simd_clauses
);
1751 /* The declaration of the variable is in effect while
1752 its initializer is parsed. */
1753 d
= start_decl (declarator
, specs
, true,
1754 chainon (postfix_attrs
, all_prefix_attrs
));
1756 d
= error_mark_node
;
1757 if (omp_declare_simd_clauses
.exists ()
1758 || !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
1759 c_finish_omp_declare_simd (parser
, d
, NULL_TREE
,
1760 omp_declare_simd_clauses
);
1761 start_init (d
, asm_name
, global_bindings_p ());
1762 init_loc
= c_parser_peek_token (parser
)->location
;
1763 init
= c_parser_initializer (parser
);
1766 if (d
!= error_mark_node
)
1768 maybe_warn_string_init (TREE_TYPE (d
), init
);
1769 finish_decl (d
, init_loc
, init
.value
,
1770 init
.original_type
, asm_name
);
1778 "%<__auto_type%> requires an initialized "
1779 "data declaration");
1780 c_parser_skip_to_end_of_block_or_statement (parser
);
1783 tree d
= start_decl (declarator
, specs
, false,
1784 chainon (postfix_attrs
,
1786 if (omp_declare_simd_clauses
.exists ()
1787 || !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
1789 tree parms
= NULL_TREE
;
1790 if (d
&& TREE_CODE (d
) == FUNCTION_DECL
)
1792 struct c_declarator
*ce
= declarator
;
1794 if (ce
->kind
== cdk_function
)
1796 parms
= ce
->u
.arg_info
->parms
;
1800 ce
= ce
->declarator
;
1803 temp_store_parm_decls (d
, parms
);
1804 c_finish_omp_declare_simd (parser
, d
, parms
,
1805 omp_declare_simd_clauses
);
1807 temp_pop_parm_decls ();
1810 finish_decl (d
, UNKNOWN_LOCATION
, NULL_TREE
,
1811 NULL_TREE
, asm_name
);
1813 if (c_parser_next_token_is_keyword (parser
, RID_IN
))
1816 *objc_foreach_object_declaration
= d
;
1818 *objc_foreach_object_declaration
= error_mark_node
;
1821 if (c_parser_next_token_is (parser
, CPP_COMMA
))
1826 "%<__auto_type%> may only be used with"
1827 " a single declarator");
1828 c_parser_skip_to_end_of_block_or_statement (parser
);
1831 c_parser_consume_token (parser
);
1832 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
1833 all_prefix_attrs
= chainon (c_parser_attributes (parser
),
1836 all_prefix_attrs
= prefix_attrs
;
1839 else if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
1841 c_parser_consume_token (parser
);
1844 else if (c_parser_next_token_is_keyword (parser
, RID_IN
))
1846 /* This can only happen in Objective-C: we found the
1847 'in' that terminates the declaration inside an
1848 Objective-C foreach statement. Do not consume the
1849 token, so that the caller can use it to determine
1850 that this indeed is a foreach context. */
1855 c_parser_error (parser
, "expected %<,%> or %<;%>");
1856 c_parser_skip_to_end_of_block_or_statement (parser
);
1860 else if (auto_type_p
)
1863 "%<__auto_type%> requires an initialized data declaration");
1864 c_parser_skip_to_end_of_block_or_statement (parser
);
1869 c_parser_error (parser
, "expected %<=%>, %<,%>, %<;%>, "
1870 "%<asm%> or %<__attribute__%>");
1871 c_parser_skip_to_end_of_block_or_statement (parser
);
1874 /* Function definition (nested or otherwise). */
1877 pedwarn (here
, OPT_Wpedantic
, "ISO C forbids nested functions");
1878 c_push_function_context ();
1880 if (!start_function (specs
, declarator
, all_prefix_attrs
))
1882 /* This can appear in many cases looking nothing like a
1883 function definition, so we don't give a more specific
1884 error suggesting there was one. */
1885 c_parser_error (parser
, "expected %<=%>, %<,%>, %<;%>, %<asm%> "
1886 "or %<__attribute__%>");
1888 c_pop_function_context ();
1892 if (DECL_DECLARED_INLINE_P (current_function_decl
))
1893 tv
= TV_PARSE_INLINE
;
1898 /* Parse old-style parameter declarations. ??? Attributes are
1899 not allowed to start declaration specifiers here because of a
1900 syntax conflict between a function declaration with attribute
1901 suffix and a function definition with an attribute prefix on
1902 first old-style parameter declaration. Following the old
1903 parser, they are not accepted on subsequent old-style
1904 parameter declarations either. However, there is no
1905 ambiguity after the first declaration, nor indeed on the
1906 first as long as we don't allow postfix attributes after a
1907 declarator with a nonempty identifier list in a definition;
1908 and postfix attributes have never been accepted here in
1909 function definitions either. */
1910 while (c_parser_next_token_is_not (parser
, CPP_EOF
)
1911 && c_parser_next_token_is_not (parser
, CPP_OPEN_BRACE
))
1912 c_parser_declaration_or_fndef (parser
, false, false, false,
1913 true, false, NULL
, vNULL
);
1914 store_parm_decls ();
1915 if (omp_declare_simd_clauses
.exists ()
1916 || !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
1917 c_finish_omp_declare_simd (parser
, current_function_decl
, NULL_TREE
,
1918 omp_declare_simd_clauses
);
1919 DECL_STRUCT_FUNCTION (current_function_decl
)->function_start_locus
1920 = c_parser_peek_token (parser
)->location
;
1921 fnbody
= c_parser_compound_statement (parser
);
1922 if (flag_enable_cilkplus
&& contains_array_notation_expr (fnbody
))
1923 fnbody
= expand_array_notation_exprs (fnbody
);
1926 tree decl
= current_function_decl
;
1927 /* Mark nested functions as needing static-chain initially.
1928 lower_nested_functions will recompute it but the
1929 DECL_STATIC_CHAIN flag is also used before that happens,
1930 by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */
1931 DECL_STATIC_CHAIN (decl
) = 1;
1934 c_pop_function_context ();
1935 add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl
), DECL_EXPR
, decl
));
1948 /* Parse an asm-definition (asm() outside a function body). This is a
1956 c_parser_asm_definition (c_parser
*parser
)
1958 tree asm_str
= c_parser_simple_asm_expr (parser
);
1960 add_asm_node (asm_str
);
1961 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
1964 /* Parse a static assertion (C11 6.7.10).
1966 static_assert-declaration:
1967 static_assert-declaration-no-semi ;
1971 c_parser_static_assert_declaration (c_parser
*parser
)
1973 c_parser_static_assert_declaration_no_semi (parser
);
1975 || !c_parser_require (parser
, CPP_SEMICOLON
, "expected %<;%>"))
1976 c_parser_skip_to_end_of_block_or_statement (parser
);
1979 /* Parse a static assertion (C11 6.7.10), without the trailing
1982 static_assert-declaration-no-semi:
1983 _Static_assert ( constant-expression , string-literal )
1987 c_parser_static_assert_declaration_no_semi (c_parser
*parser
)
1989 location_t assert_loc
, value_loc
;
1993 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_STATIC_ASSERT
));
1994 assert_loc
= c_parser_peek_token (parser
)->location
;
1998 pedwarn (assert_loc
, OPT_Wpedantic
,
1999 "ISO C99 does not support %<_Static_assert%>");
2001 pedwarn (assert_loc
, OPT_Wpedantic
,
2002 "ISO C90 does not support %<_Static_assert%>");
2004 c_parser_consume_token (parser
);
2005 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
2007 value_loc
= c_parser_peek_token (parser
)->location
;
2008 value
= c_parser_expr_no_commas (parser
, NULL
).value
;
2009 parser
->lex_untranslated_string
= true;
2010 if (!c_parser_require (parser
, CPP_COMMA
, "expected %<,%>"))
2012 parser
->lex_untranslated_string
= false;
2015 switch (c_parser_peek_token (parser
)->type
)
2021 case CPP_UTF8STRING
:
2022 string
= c_parser_peek_token (parser
)->value
;
2023 c_parser_consume_token (parser
);
2024 parser
->lex_untranslated_string
= false;
2027 c_parser_error (parser
, "expected string literal");
2028 parser
->lex_untranslated_string
= false;
2031 c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
2033 if (!INTEGRAL_TYPE_P (TREE_TYPE (value
)))
2035 error_at (value_loc
, "expression in static assertion is not an integer");
2038 if (TREE_CODE (value
) != INTEGER_CST
)
2040 value
= c_fully_fold (value
, false, NULL
);
2041 if (TREE_CODE (value
) == INTEGER_CST
)
2042 pedwarn (value_loc
, OPT_Wpedantic
, "expression in static assertion "
2043 "is not an integer constant expression");
2045 if (TREE_CODE (value
) != INTEGER_CST
)
2047 error_at (value_loc
, "expression in static assertion is not constant");
2050 constant_expression_warning (value
);
2051 if (integer_zerop (value
))
2052 error_at (assert_loc
, "static assertion failed: %E", string
);
2055 /* Parse some declaration specifiers (possibly none) (C90 6.5, C99
2056 6.7), adding them to SPECS (which may already include some).
2057 Storage class specifiers are accepted iff SCSPEC_OK; type
2058 specifiers are accepted iff TYPESPEC_OK; alignment specifiers are
2059 accepted iff ALIGNSPEC_OK; attributes are accepted at the start
2060 iff START_ATTR_OK; __auto_type is accepted iff AUTO_TYPE_OK.
2062 declaration-specifiers:
2063 storage-class-specifier declaration-specifiers[opt]
2064 type-specifier declaration-specifiers[opt]
2065 type-qualifier declaration-specifiers[opt]
2066 function-specifier declaration-specifiers[opt]
2067 alignment-specifier declaration-specifiers[opt]
2069 Function specifiers (inline) are from C99, and are currently
2070 handled as storage class specifiers, as is __thread. Alignment
2071 specifiers are from C11.
2073 C90 6.5.1, C99 6.7.1:
2074 storage-class-specifier:
2082 (_Thread_local is new in C11.)
2089 (_Noreturn is new in C11.)
2091 C90 6.5.2, C99 6.7.2:
2104 [_Imaginary removed in C99 TC2]
2105 struct-or-union-specifier
2108 atomic-type-specifier
2110 (_Bool and _Complex are new in C99.)
2111 (atomic-type-specifier is new in C11.)
2113 C90 6.5.3, C99 6.7.3:
2119 address-space-qualifier
2122 (restrict is new in C99.)
2123 (_Atomic is new in C11.)
2127 declaration-specifiers:
2128 attributes declaration-specifiers[opt]
2134 identifier recognized by the target
2136 storage-class-specifier:
2150 (_Fract, _Accum, and _Sat are new from ISO/IEC DTR 18037:
2151 http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf)
2153 atomic-type-specifier
2154 _Atomic ( type-name )
2159 class-name objc-protocol-refs[opt]
2160 typedef-name objc-protocol-refs
2165 c_parser_declspecs (c_parser
*parser
, struct c_declspecs
*specs
,
2166 bool scspec_ok
, bool typespec_ok
, bool start_attr_ok
,
2167 bool alignspec_ok
, bool auto_type_ok
,
2168 enum c_lookahead_kind la
)
2170 bool attrs_ok
= start_attr_ok
;
2171 bool seen_type
= specs
->typespec_kind
!= ctsk_none
;
2174 gcc_assert (la
== cla_prefer_id
);
2176 while (c_parser_next_token_is (parser
, CPP_NAME
)
2177 || c_parser_next_token_is (parser
, CPP_KEYWORD
)
2178 || (c_dialect_objc () && c_parser_next_token_is (parser
, CPP_LESS
)))
2180 struct c_typespec t
;
2183 location_t loc
= c_parser_peek_token (parser
)->location
;
2185 /* If we cannot accept a type, exit if the next token must start
2186 one. Also, if we already have seen a tagged definition,
2187 a typename would be an error anyway and likely the user
2188 has simply forgotten a semicolon, so we exit. */
2189 if ((!typespec_ok
|| specs
->typespec_kind
== ctsk_tagdef
)
2190 && c_parser_next_tokens_start_typename (parser
, la
)
2191 && !c_parser_next_token_is_qualifier (parser
))
2194 if (c_parser_next_token_is (parser
, CPP_NAME
))
2196 c_token
*name_token
= c_parser_peek_token (parser
);
2197 tree value
= name_token
->value
;
2198 c_id_kind kind
= name_token
->id_kind
;
2200 if (kind
== C_ID_ADDRSPACE
)
2203 = name_token
->keyword
- RID_FIRST_ADDR_SPACE
;
2204 declspecs_add_addrspace (name_token
->location
, specs
, as
);
2205 c_parser_consume_token (parser
);
2210 gcc_assert (!c_parser_next_token_is_qualifier (parser
));
2212 /* If we cannot accept a type, and the next token must start one,
2213 exit. Do the same if we already have seen a tagged definition,
2214 since it would be an error anyway and likely the user has simply
2215 forgotten a semicolon. */
2216 if (seen_type
|| !c_parser_next_tokens_start_typename (parser
, la
))
2219 /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or
2220 a C_ID_CLASSNAME. */
2221 c_parser_consume_token (parser
);
2224 if (kind
== C_ID_ID
)
2226 error ("unknown type name %qE", value
);
2227 t
.kind
= ctsk_typedef
;
2228 t
.spec
= error_mark_node
;
2230 else if (kind
== C_ID_TYPENAME
2231 && (!c_dialect_objc ()
2232 || c_parser_next_token_is_not (parser
, CPP_LESS
)))
2234 t
.kind
= ctsk_typedef
;
2235 /* For a typedef name, record the meaning, not the name.
2236 In case of 'foo foo, bar;'. */
2237 t
.spec
= lookup_name (value
);
2241 tree proto
= NULL_TREE
;
2242 gcc_assert (c_dialect_objc ());
2244 if (c_parser_next_token_is (parser
, CPP_LESS
))
2245 proto
= c_parser_objc_protocol_refs (parser
);
2246 t
.spec
= objc_get_protocol_qualified_type (value
, proto
);
2249 t
.expr_const_operands
= true;
2250 declspecs_add_type (name_token
->location
, specs
, t
);
2253 if (c_parser_next_token_is (parser
, CPP_LESS
))
2255 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>" -
2256 nisse@lysator.liu.se. */
2258 gcc_assert (c_dialect_objc ());
2259 if (!typespec_ok
|| seen_type
)
2261 proto
= c_parser_objc_protocol_refs (parser
);
2263 t
.spec
= objc_get_protocol_qualified_type (NULL_TREE
, proto
);
2265 t
.expr_const_operands
= true;
2266 declspecs_add_type (loc
, specs
, t
);
2269 gcc_assert (c_parser_next_token_is (parser
, CPP_KEYWORD
));
2270 switch (c_parser_peek_token (parser
)->keyword
)
2283 /* TODO: Distinguish between function specifiers (inline, noreturn)
2284 and storage class specifiers, either here or in
2285 declspecs_add_scspec. */
2286 declspecs_add_scspec (loc
, specs
,
2287 c_parser_peek_token (parser
)->value
);
2288 c_parser_consume_token (parser
);
2316 if (c_dialect_objc ())
2317 parser
->objc_need_raw_identifier
= true;
2318 t
.kind
= ctsk_resword
;
2319 t
.spec
= c_parser_peek_token (parser
)->value
;
2321 t
.expr_const_operands
= true;
2322 declspecs_add_type (loc
, specs
, t
);
2323 c_parser_consume_token (parser
);
2330 t
= c_parser_enum_specifier (parser
);
2331 declspecs_add_type (loc
, specs
, t
);
2339 t
= c_parser_struct_or_union_specifier (parser
);
2340 invoke_plugin_callbacks (PLUGIN_FINISH_TYPE
, t
.spec
);
2341 declspecs_add_type (loc
, specs
, t
);
2344 /* ??? The old parser rejected typeof after other type
2345 specifiers, but is a syntax error the best way of
2347 if (!typespec_ok
|| seen_type
)
2351 t
= c_parser_typeof_specifier (parser
);
2352 declspecs_add_type (loc
, specs
, t
);
2355 /* C parser handling of Objective-C constructs needs
2356 checking for correct lvalue-to-rvalue conversions, and
2357 the code in build_modify_expr handling various
2358 Objective-C cases, and that in build_unary_op handling
2359 Objective-C cases for increment / decrement, also needs
2360 updating; uses of TYPE_MAIN_VARIANT in objc_compare_types
2361 and objc_types_are_equivalent may also need updates. */
2362 if (c_dialect_objc ())
2363 sorry ("%<_Atomic%> in Objective-C");
2364 /* C parser handling of OpenMP constructs needs checking for
2365 correct lvalue-to-rvalue conversions. */
2367 sorry ("%<_Atomic%> with OpenMP");
2371 pedwarn (loc
, OPT_Wpedantic
,
2372 "ISO C99 does not support the %<_Atomic%> qualifier");
2374 pedwarn (loc
, OPT_Wpedantic
,
2375 "ISO C90 does not support the %<_Atomic%> qualifier");
2379 value
= c_parser_peek_token (parser
)->value
;
2380 c_parser_consume_token (parser
);
2381 if (typespec_ok
&& c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
2383 /* _Atomic ( type-name ). */
2385 c_parser_consume_token (parser
);
2386 struct c_type_name
*type
= c_parser_type_name (parser
);
2387 t
.kind
= ctsk_typeof
;
2388 t
.spec
= error_mark_node
;
2390 t
.expr_const_operands
= true;
2392 t
.spec
= groktypename (type
, &t
.expr
,
2393 &t
.expr_const_operands
);
2394 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
2396 if (t
.spec
!= error_mark_node
)
2398 if (TREE_CODE (t
.spec
) == ARRAY_TYPE
)
2399 error_at (loc
, "%<_Atomic%>-qualified array type");
2400 else if (TREE_CODE (t
.spec
) == FUNCTION_TYPE
)
2401 error_at (loc
, "%<_Atomic%>-qualified function type");
2402 else if (TYPE_QUALS (t
.spec
) != TYPE_UNQUALIFIED
)
2403 error_at (loc
, "%<_Atomic%> applied to a qualified type");
2405 t
.spec
= c_build_qualified_type (t
.spec
, TYPE_QUAL_ATOMIC
);
2407 declspecs_add_type (loc
, specs
, t
);
2410 declspecs_add_qual (loc
, specs
, value
);
2416 declspecs_add_qual (loc
, specs
, c_parser_peek_token (parser
)->value
);
2417 c_parser_consume_token (parser
);
2422 attrs
= c_parser_attributes (parser
);
2423 declspecs_add_attrs (loc
, specs
, attrs
);
2428 align
= c_parser_alignas_specifier (parser
);
2429 declspecs_add_alignas (loc
, specs
, align
);
2438 /* Parse an enum specifier (C90 6.5.2.2, C99 6.7.2.2).
2441 enum attributes[opt] identifier[opt] { enumerator-list } attributes[opt]
2442 enum attributes[opt] identifier[opt] { enumerator-list , } attributes[opt]
2443 enum attributes[opt] identifier
2445 The form with trailing comma is new in C99. The forms with
2446 attributes are GNU extensions. In GNU C, we accept any expression
2447 without commas in the syntax (assignment expressions, not just
2448 conditional expressions); assignment expressions will be diagnosed
2453 enumerator-list , enumerator
2456 enumeration-constant
2457 enumeration-constant = constant-expression
2460 static struct c_typespec
2461 c_parser_enum_specifier (c_parser
*parser
)
2463 struct c_typespec ret
;
2465 tree ident
= NULL_TREE
;
2466 location_t enum_loc
;
2467 location_t ident_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
2468 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_ENUM
));
2469 enum_loc
= c_parser_peek_token (parser
)->location
;
2470 c_parser_consume_token (parser
);
2471 attrs
= c_parser_attributes (parser
);
2472 enum_loc
= c_parser_peek_token (parser
)->location
;
2473 /* Set the location in case we create a decl now. */
2474 c_parser_set_source_position_from_token (c_parser_peek_token (parser
));
2475 if (c_parser_next_token_is (parser
, CPP_NAME
))
2477 ident
= c_parser_peek_token (parser
)->value
;
2478 ident_loc
= c_parser_peek_token (parser
)->location
;
2479 enum_loc
= ident_loc
;
2480 c_parser_consume_token (parser
);
2482 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
2484 /* Parse an enum definition. */
2485 struct c_enum_contents the_enum
;
2488 /* We chain the enumerators in reverse order, then put them in
2489 forward order at the end. */
2491 timevar_push (TV_PARSE_ENUM
);
2492 type
= start_enum (enum_loc
, &the_enum
, ident
);
2494 c_parser_consume_token (parser
);
2502 location_t comma_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
2503 location_t decl_loc
, value_loc
;
2504 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
2506 c_parser_error (parser
, "expected identifier");
2507 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
, NULL
);
2508 values
= error_mark_node
;
2511 token
= c_parser_peek_token (parser
);
2512 enum_id
= token
->value
;
2513 /* Set the location in case we create a decl now. */
2514 c_parser_set_source_position_from_token (token
);
2515 decl_loc
= value_loc
= token
->location
;
2516 c_parser_consume_token (parser
);
2517 if (c_parser_next_token_is (parser
, CPP_EQ
))
2519 c_parser_consume_token (parser
);
2520 value_loc
= c_parser_peek_token (parser
)->location
;
2521 enum_value
= c_parser_expr_no_commas (parser
, NULL
).value
;
2524 enum_value
= NULL_TREE
;
2525 enum_decl
= build_enumerator (decl_loc
, value_loc
,
2526 &the_enum
, enum_id
, enum_value
);
2527 TREE_CHAIN (enum_decl
) = values
;
2530 if (c_parser_next_token_is (parser
, CPP_COMMA
))
2532 comma_loc
= c_parser_peek_token (parser
)->location
;
2534 c_parser_consume_token (parser
);
2536 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
2538 if (seen_comma
&& !flag_isoc99
)
2539 pedwarn (comma_loc
, OPT_Wpedantic
, "comma at end of enumerator list");
2540 c_parser_consume_token (parser
);
2545 c_parser_error (parser
, "expected %<,%> or %<}%>");
2546 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
, NULL
);
2547 values
= error_mark_node
;
2551 postfix_attrs
= c_parser_attributes (parser
);
2552 ret
.spec
= finish_enum (type
, nreverse (values
),
2553 chainon (attrs
, postfix_attrs
));
2554 ret
.kind
= ctsk_tagdef
;
2555 ret
.expr
= NULL_TREE
;
2556 ret
.expr_const_operands
= true;
2557 timevar_pop (TV_PARSE_ENUM
);
2562 c_parser_error (parser
, "expected %<{%>");
2563 ret
.spec
= error_mark_node
;
2564 ret
.kind
= ctsk_tagref
;
2565 ret
.expr
= NULL_TREE
;
2566 ret
.expr_const_operands
= true;
2569 ret
= parser_xref_tag (ident_loc
, ENUMERAL_TYPE
, ident
);
2570 /* In ISO C, enumerated types can be referred to only if already
2572 if (pedantic
&& !COMPLETE_TYPE_P (ret
.spec
))
2575 pedwarn (enum_loc
, OPT_Wpedantic
,
2576 "ISO C forbids forward references to %<enum%> types");
2581 /* Parse a struct or union specifier (C90 6.5.2.1, C99 6.7.2.1).
2583 struct-or-union-specifier:
2584 struct-or-union attributes[opt] identifier[opt]
2585 { struct-contents } attributes[opt]
2586 struct-or-union attributes[opt] identifier
2589 struct-declaration-list
2591 struct-declaration-list:
2592 struct-declaration ;
2593 struct-declaration-list struct-declaration ;
2600 struct-declaration-list struct-declaration
2602 struct-declaration-list:
2603 struct-declaration-list ;
2606 (Note that in the syntax here, unlike that in ISO C, the semicolons
2607 are included here rather than in struct-declaration, in order to
2608 describe the syntax with extra semicolons and missing semicolon at
2613 struct-declaration-list:
2614 @defs ( class-name )
2616 (Note this does not include a trailing semicolon, but can be
2617 followed by further declarations, and gets a pedwarn-if-pedantic
2618 when followed by a semicolon.) */
2620 static struct c_typespec
2621 c_parser_struct_or_union_specifier (c_parser
*parser
)
2623 struct c_typespec ret
;
2625 tree ident
= NULL_TREE
;
2626 location_t struct_loc
;
2627 location_t ident_loc
= UNKNOWN_LOCATION
;
2628 enum tree_code code
;
2629 switch (c_parser_peek_token (parser
)->keyword
)
2640 struct_loc
= c_parser_peek_token (parser
)->location
;
2641 c_parser_consume_token (parser
);
2642 attrs
= c_parser_attributes (parser
);
2644 /* Set the location in case we create a decl now. */
2645 c_parser_set_source_position_from_token (c_parser_peek_token (parser
));
2647 if (c_parser_next_token_is (parser
, CPP_NAME
))
2649 ident
= c_parser_peek_token (parser
)->value
;
2650 ident_loc
= c_parser_peek_token (parser
)->location
;
2651 struct_loc
= ident_loc
;
2652 c_parser_consume_token (parser
);
2654 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
2656 /* Parse a struct or union definition. Start the scope of the
2657 tag before parsing components. */
2658 struct c_struct_parse_info
*struct_info
;
2659 tree type
= start_struct (struct_loc
, code
, ident
, &struct_info
);
2661 /* We chain the components in reverse order, then put them in
2662 forward order at the end. Each struct-declaration may
2663 declare multiple components (comma-separated), so we must use
2664 chainon to join them, although when parsing each
2665 struct-declaration we can use TREE_CHAIN directly.
2667 The theory behind all this is that there will be more
2668 semicolon separated fields than comma separated fields, and
2669 so we'll be minimizing the number of node traversals required
2672 timevar_push (TV_PARSE_STRUCT
);
2673 contents
= NULL_TREE
;
2674 c_parser_consume_token (parser
);
2675 /* Handle the Objective-C @defs construct,
2676 e.g. foo(sizeof(struct{ @defs(ClassName) }));. */
2677 if (c_parser_next_token_is_keyword (parser
, RID_AT_DEFS
))
2680 gcc_assert (c_dialect_objc ());
2681 c_parser_consume_token (parser
);
2682 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
2684 if (c_parser_next_token_is (parser
, CPP_NAME
)
2685 && c_parser_peek_token (parser
)->id_kind
== C_ID_CLASSNAME
)
2687 name
= c_parser_peek_token (parser
)->value
;
2688 c_parser_consume_token (parser
);
2692 c_parser_error (parser
, "expected class name");
2693 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
2696 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
2698 contents
= nreverse (objc_get_class_ivars (name
));
2701 /* Parse the struct-declarations and semicolons. Problems with
2702 semicolons are diagnosed here; empty structures are diagnosed
2707 /* Parse any stray semicolon. */
2708 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
2710 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
2711 "extra semicolon in struct or union specified");
2712 c_parser_consume_token (parser
);
2715 /* Stop if at the end of the struct or union contents. */
2716 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
2718 c_parser_consume_token (parser
);
2721 /* Accept #pragmas at struct scope. */
2722 if (c_parser_next_token_is (parser
, CPP_PRAGMA
))
2724 c_parser_pragma (parser
, pragma_struct
);
2727 /* Parse some comma-separated declarations, but not the
2728 trailing semicolon if any. */
2729 decls
= c_parser_struct_declaration (parser
);
2730 contents
= chainon (decls
, contents
);
2731 /* If no semicolon follows, either we have a parse error or
2732 are at the end of the struct or union and should
2734 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
2735 c_parser_consume_token (parser
);
2738 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
2739 pedwarn (c_parser_peek_token (parser
)->location
, 0,
2740 "no semicolon at end of struct or union");
2741 else if (parser
->error
2742 || !c_parser_next_token_starts_declspecs (parser
))
2744 c_parser_error (parser
, "expected %<;%>");
2745 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
, NULL
);
2749 /* If we come here, we have already emitted an error
2750 for an expected `;', identifier or `(', and we also
2751 recovered already. Go on with the next field. */
2754 postfix_attrs
= c_parser_attributes (parser
);
2755 ret
.spec
= finish_struct (struct_loc
, type
, nreverse (contents
),
2756 chainon (attrs
, postfix_attrs
), struct_info
);
2757 ret
.kind
= ctsk_tagdef
;
2758 ret
.expr
= NULL_TREE
;
2759 ret
.expr_const_operands
= true;
2760 timevar_pop (TV_PARSE_STRUCT
);
2765 c_parser_error (parser
, "expected %<{%>");
2766 ret
.spec
= error_mark_node
;
2767 ret
.kind
= ctsk_tagref
;
2768 ret
.expr
= NULL_TREE
;
2769 ret
.expr_const_operands
= true;
2772 ret
= parser_xref_tag (ident_loc
, code
, ident
);
2776 /* Parse a struct-declaration (C90 6.5.2.1, C99 6.7.2.1), *without*
2777 the trailing semicolon.
2780 specifier-qualifier-list struct-declarator-list
2781 static_assert-declaration-no-semi
2783 specifier-qualifier-list:
2784 type-specifier specifier-qualifier-list[opt]
2785 type-qualifier specifier-qualifier-list[opt]
2786 attributes specifier-qualifier-list[opt]
2788 struct-declarator-list:
2790 struct-declarator-list , attributes[opt] struct-declarator
2793 declarator attributes[opt]
2794 declarator[opt] : constant-expression attributes[opt]
2799 __extension__ struct-declaration
2800 specifier-qualifier-list
2802 Unlike the ISO C syntax, semicolons are handled elsewhere. The use
2803 of attributes where shown is a GNU extension. In GNU C, we accept
2804 any expression without commas in the syntax (assignment
2805 expressions, not just conditional expressions); assignment
2806 expressions will be diagnosed as non-constant. */
2809 c_parser_struct_declaration (c_parser
*parser
)
2811 struct c_declspecs
*specs
;
2813 tree all_prefix_attrs
;
2815 location_t decl_loc
;
2816 if (c_parser_next_token_is_keyword (parser
, RID_EXTENSION
))
2820 ext
= disable_extension_diagnostics ();
2821 c_parser_consume_token (parser
);
2822 decl
= c_parser_struct_declaration (parser
);
2823 restore_extension_diagnostics (ext
);
2826 if (c_parser_next_token_is_keyword (parser
, RID_STATIC_ASSERT
))
2828 c_parser_static_assert_declaration_no_semi (parser
);
2831 specs
= build_null_declspecs ();
2832 decl_loc
= c_parser_peek_token (parser
)->location
;
2833 /* Strictly by the standard, we shouldn't allow _Alignas here,
2834 but it appears to have been intended to allow it there, so
2835 we're keeping it as it is until WG14 reaches a conclusion
2837 <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1731.pdf> */
2838 c_parser_declspecs (parser
, specs
, false, true, true,
2839 true, false, cla_nonabstract_decl
);
2842 if (!specs
->declspecs_seen_p
)
2844 c_parser_error (parser
, "expected specifier-qualifier-list");
2847 finish_declspecs (specs
);
2848 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
)
2849 || c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
2852 if (specs
->typespec_kind
== ctsk_none
)
2854 pedwarn (decl_loc
, OPT_Wpedantic
,
2855 "ISO C forbids member declarations with no members");
2856 shadow_tag_warned (specs
, pedantic
);
2861 /* Support for unnamed structs or unions as members of
2862 structs or unions (which is [a] useful and [b] supports
2866 ret
= grokfield (c_parser_peek_token (parser
)->location
,
2867 build_id_declarator (NULL_TREE
), specs
,
2870 decl_attributes (&ret
, attrs
, 0);
2875 /* Provide better error recovery. Note that a type name here is valid,
2876 and will be treated as a field name. */
2877 if (specs
->typespec_kind
== ctsk_tagdef
2878 && TREE_CODE (specs
->type
) != ENUMERAL_TYPE
2879 && c_parser_next_token_starts_declspecs (parser
)
2880 && !c_parser_next_token_is (parser
, CPP_NAME
))
2882 c_parser_error (parser
, "expected %<;%>, identifier or %<(%>");
2883 parser
->error
= false;
2887 pending_xref_error ();
2888 prefix_attrs
= specs
->attrs
;
2889 all_prefix_attrs
= prefix_attrs
;
2890 specs
->attrs
= NULL_TREE
;
2894 /* Declaring one or more declarators or un-named bit-fields. */
2895 struct c_declarator
*declarator
;
2897 if (c_parser_next_token_is (parser
, CPP_COLON
))
2898 declarator
= build_id_declarator (NULL_TREE
);
2900 declarator
= c_parser_declarator (parser
,
2901 specs
->typespec_kind
!= ctsk_none
,
2902 C_DTR_NORMAL
, &dummy
);
2903 if (declarator
== NULL
)
2905 c_parser_skip_to_end_of_block_or_statement (parser
);
2908 if (c_parser_next_token_is (parser
, CPP_COLON
)
2909 || c_parser_next_token_is (parser
, CPP_COMMA
)
2910 || c_parser_next_token_is (parser
, CPP_SEMICOLON
)
2911 || c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
)
2912 || c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
2914 tree postfix_attrs
= NULL_TREE
;
2915 tree width
= NULL_TREE
;
2917 if (c_parser_next_token_is (parser
, CPP_COLON
))
2919 c_parser_consume_token (parser
);
2920 width
= c_parser_expr_no_commas (parser
, NULL
).value
;
2922 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
2923 postfix_attrs
= c_parser_attributes (parser
);
2924 d
= grokfield (c_parser_peek_token (parser
)->location
,
2925 declarator
, specs
, width
, &all_prefix_attrs
);
2926 decl_attributes (&d
, chainon (postfix_attrs
,
2927 all_prefix_attrs
), 0);
2928 DECL_CHAIN (d
) = decls
;
2930 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
2931 all_prefix_attrs
= chainon (c_parser_attributes (parser
),
2934 all_prefix_attrs
= prefix_attrs
;
2935 if (c_parser_next_token_is (parser
, CPP_COMMA
))
2936 c_parser_consume_token (parser
);
2937 else if (c_parser_next_token_is (parser
, CPP_SEMICOLON
)
2938 || c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
2940 /* Semicolon consumed in caller. */
2945 c_parser_error (parser
, "expected %<,%>, %<;%> or %<}%>");
2951 c_parser_error (parser
,
2952 "expected %<:%>, %<,%>, %<;%>, %<}%> or "
2953 "%<__attribute__%>");
2960 /* Parse a typeof specifier (a GNU extension).
2963 typeof ( expression )
2964 typeof ( type-name )
2967 static struct c_typespec
2968 c_parser_typeof_specifier (c_parser
*parser
)
2970 struct c_typespec ret
;
2971 ret
.kind
= ctsk_typeof
;
2972 ret
.spec
= error_mark_node
;
2973 ret
.expr
= NULL_TREE
;
2974 ret
.expr_const_operands
= true;
2975 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_TYPEOF
));
2976 c_parser_consume_token (parser
);
2977 c_inhibit_evaluation_warnings
++;
2979 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
2981 c_inhibit_evaluation_warnings
--;
2985 if (c_parser_next_tokens_start_typename (parser
, cla_prefer_id
))
2987 struct c_type_name
*type
= c_parser_type_name (parser
);
2988 c_inhibit_evaluation_warnings
--;
2992 ret
.spec
= groktypename (type
, &ret
.expr
, &ret
.expr_const_operands
);
2993 pop_maybe_used (variably_modified_type_p (ret
.spec
, NULL_TREE
));
2999 location_t here
= c_parser_peek_token (parser
)->location
;
3000 struct c_expr expr
= c_parser_expression (parser
);
3001 c_inhibit_evaluation_warnings
--;
3003 if (TREE_CODE (expr
.value
) == COMPONENT_REF
3004 && DECL_C_BIT_FIELD (TREE_OPERAND (expr
.value
, 1)))
3005 error_at (here
, "%<typeof%> applied to a bit-field");
3006 mark_exp_read (expr
.value
);
3007 ret
.spec
= TREE_TYPE (expr
.value
);
3008 was_vm
= variably_modified_type_p (ret
.spec
, NULL_TREE
);
3009 /* This is returned with the type so that when the type is
3010 evaluated, this can be evaluated. */
3012 ret
.expr
= c_fully_fold (expr
.value
, false, &ret
.expr_const_operands
);
3013 pop_maybe_used (was_vm
);
3014 /* For use in macros such as those in <stdatomic.h>, remove
3015 _Atomic and const qualifiers from atomic types. (Possibly
3016 all qualifiers should be removed; const can be an issue for
3017 more macros using typeof than just the <stdatomic.h>
3019 if (ret
.spec
!= error_mark_node
&& TYPE_ATOMIC (ret
.spec
))
3020 ret
.spec
= c_build_qualified_type (ret
.spec
,
3021 (TYPE_QUALS (ret
.spec
)
3022 & ~(TYPE_QUAL_ATOMIC
3023 | TYPE_QUAL_CONST
)));
3025 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
3029 /* Parse an alignment-specifier.
3033 alignment-specifier:
3034 _Alignas ( type-name )
3035 _Alignas ( constant-expression )
3039 c_parser_alignas_specifier (c_parser
* parser
)
3041 tree ret
= error_mark_node
;
3042 location_t loc
= c_parser_peek_token (parser
)->location
;
3043 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_ALIGNAS
));
3044 c_parser_consume_token (parser
);
3048 pedwarn (loc
, OPT_Wpedantic
,
3049 "ISO C99 does not support %<_Alignas%>");
3051 pedwarn (loc
, OPT_Wpedantic
,
3052 "ISO C90 does not support %<_Alignas%>");
3054 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
3056 if (c_parser_next_tokens_start_typename (parser
, cla_prefer_id
))
3058 struct c_type_name
*type
= c_parser_type_name (parser
);
3060 ret
= c_sizeof_or_alignof_type (loc
, groktypename (type
, NULL
, NULL
),
3064 ret
= c_parser_expr_no_commas (parser
, NULL
).value
;
3065 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
3069 /* Parse a declarator, possibly an abstract declarator (C90 6.5.4,
3070 6.5.5, C99 6.7.5, 6.7.6). If TYPE_SEEN_P then a typedef name may
3071 be redeclared; otherwise it may not. KIND indicates which kind of
3072 declarator is wanted. Returns a valid declarator except in the
3073 case of a syntax error in which case NULL is returned. *SEEN_ID is
3074 set to true if an identifier being declared is seen; this is used
3075 to diagnose bad forms of abstract array declarators and to
3076 determine whether an identifier list is syntactically permitted.
3079 pointer[opt] direct-declarator
3083 ( attributes[opt] declarator )
3084 direct-declarator array-declarator
3085 direct-declarator ( parameter-type-list )
3086 direct-declarator ( identifier-list[opt] )
3089 * type-qualifier-list[opt]
3090 * type-qualifier-list[opt] pointer
3092 type-qualifier-list:
3095 type-qualifier-list type-qualifier
3096 type-qualifier-list attributes
3099 [ type-qualifier-list[opt] assignment-expression[opt] ]
3100 [ static type-qualifier-list[opt] assignment-expression ]
3101 [ type-qualifier-list static assignment-expression ]
3102 [ type-qualifier-list[opt] * ]
3104 parameter-type-list:
3106 parameter-list , ...
3109 parameter-declaration
3110 parameter-list , parameter-declaration
3112 parameter-declaration:
3113 declaration-specifiers declarator attributes[opt]
3114 declaration-specifiers abstract-declarator[opt] attributes[opt]
3118 identifier-list , identifier
3120 abstract-declarator:
3122 pointer[opt] direct-abstract-declarator
3124 direct-abstract-declarator:
3125 ( attributes[opt] abstract-declarator )
3126 direct-abstract-declarator[opt] array-declarator
3127 direct-abstract-declarator[opt] ( parameter-type-list[opt] )
3132 direct-declarator ( parameter-forward-declarations
3133 parameter-type-list[opt] )
3135 direct-abstract-declarator:
3136 direct-abstract-declarator[opt] ( parameter-forward-declarations
3137 parameter-type-list[opt] )
3139 parameter-forward-declarations:
3141 parameter-forward-declarations parameter-list ;
3143 The uses of attributes shown above are GNU extensions.
3145 Some forms of array declarator are not included in C99 in the
3146 syntax for abstract declarators; these are disallowed elsewhere.
3147 This may be a defect (DR#289).
3149 This function also accepts an omitted abstract declarator as being
3150 an abstract declarator, although not part of the formal syntax. */
3152 static struct c_declarator
*
3153 c_parser_declarator (c_parser
*parser
, bool type_seen_p
, c_dtr_syn kind
,
3156 /* Parse any initial pointer part. */
3157 if (c_parser_next_token_is (parser
, CPP_MULT
))
3159 struct c_declspecs
*quals_attrs
= build_null_declspecs ();
3160 struct c_declarator
*inner
;
3161 c_parser_consume_token (parser
);
3162 c_parser_declspecs (parser
, quals_attrs
, false, false, true,
3163 false, false, cla_prefer_id
);
3164 inner
= c_parser_declarator (parser
, type_seen_p
, kind
, seen_id
);
3168 return make_pointer_declarator (quals_attrs
, inner
);
3170 /* Now we have a direct declarator, direct abstract declarator or
3171 nothing (which counts as a direct abstract declarator here). */
3172 return c_parser_direct_declarator (parser
, type_seen_p
, kind
, seen_id
);
3175 /* Parse a direct declarator or direct abstract declarator; arguments
3176 as c_parser_declarator. */
3178 static struct c_declarator
*
3179 c_parser_direct_declarator (c_parser
*parser
, bool type_seen_p
, c_dtr_syn kind
,
3182 /* The direct declarator must start with an identifier (possibly
3183 omitted) or a parenthesized declarator (possibly abstract). In
3184 an ordinary declarator, initial parentheses must start a
3185 parenthesized declarator. In an abstract declarator or parameter
3186 declarator, they could start a parenthesized declarator or a
3187 parameter list. To tell which, the open parenthesis and any
3188 following attributes must be read. If a declaration specifier
3189 follows, then it is a parameter list; if the specifier is a
3190 typedef name, there might be an ambiguity about redeclaring it,
3191 which is resolved in the direction of treating it as a typedef
3192 name. If a close parenthesis follows, it is also an empty
3193 parameter list, as the syntax does not permit empty abstract
3194 declarators. Otherwise, it is a parenthesized declarator (in
3195 which case the analysis may be repeated inside it, recursively).
3197 ??? There is an ambiguity in a parameter declaration "int
3198 (__attribute__((foo)) x)", where x is not a typedef name: it
3199 could be an abstract declarator for a function, or declare x with
3200 parentheses. The proper resolution of this ambiguity needs
3201 documenting. At present we follow an accident of the old
3202 parser's implementation, whereby the first parameter must have
3203 some declaration specifiers other than just attributes. Thus as
3204 a parameter declaration it is treated as a parenthesized
3205 parameter named x, and as an abstract declarator it is
3208 ??? Also following the old parser, attributes inside an empty
3209 parameter list are ignored, making it a list not yielding a
3210 prototype, rather than giving an error or making it have one
3211 parameter with implicit type int.
3213 ??? Also following the old parser, typedef names may be
3214 redeclared in declarators, but not Objective-C class names. */
3216 if (kind
!= C_DTR_ABSTRACT
3217 && c_parser_next_token_is (parser
, CPP_NAME
)
3219 && (c_parser_peek_token (parser
)->id_kind
== C_ID_TYPENAME
3220 || c_parser_peek_token (parser
)->id_kind
== C_ID_CLASSNAME
))
3221 || c_parser_peek_token (parser
)->id_kind
== C_ID_ID
))
3223 struct c_declarator
*inner
3224 = build_id_declarator (c_parser_peek_token (parser
)->value
);
3226 inner
->id_loc
= c_parser_peek_token (parser
)->location
;
3227 c_parser_consume_token (parser
);
3228 return c_parser_direct_declarator_inner (parser
, *seen_id
, inner
);
3231 if (kind
!= C_DTR_NORMAL
3232 && c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
))
3234 struct c_declarator
*inner
= build_id_declarator (NULL_TREE
);
3235 return c_parser_direct_declarator_inner (parser
, *seen_id
, inner
);
3238 /* Either we are at the end of an abstract declarator, or we have
3241 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
3244 struct c_declarator
*inner
;
3245 c_parser_consume_token (parser
);
3246 attrs
= c_parser_attributes (parser
);
3247 if (kind
!= C_DTR_NORMAL
3248 && (c_parser_next_token_starts_declspecs (parser
)
3249 || c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
)))
3251 struct c_arg_info
*args
3252 = c_parser_parms_declarator (parser
, kind
== C_DTR_NORMAL
,
3259 = build_function_declarator (args
,
3260 build_id_declarator (NULL_TREE
));
3261 return c_parser_direct_declarator_inner (parser
, *seen_id
,
3265 /* A parenthesized declarator. */
3266 inner
= c_parser_declarator (parser
, type_seen_p
, kind
, seen_id
);
3267 if (inner
!= NULL
&& attrs
!= NULL
)
3268 inner
= build_attrs_declarator (attrs
, inner
);
3269 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3271 c_parser_consume_token (parser
);
3275 return c_parser_direct_declarator_inner (parser
, *seen_id
, inner
);
3279 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
3286 if (kind
== C_DTR_NORMAL
)
3288 c_parser_error (parser
, "expected identifier or %<(%>");
3292 return build_id_declarator (NULL_TREE
);
3296 /* Parse part of a direct declarator or direct abstract declarator,
3297 given that some (in INNER) has already been parsed; ID_PRESENT is
3298 true if an identifier is present, false for an abstract
3301 static struct c_declarator
*
3302 c_parser_direct_declarator_inner (c_parser
*parser
, bool id_present
,
3303 struct c_declarator
*inner
)
3305 /* Parse a sequence of array declarators and parameter lists. */
3306 if (c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
))
3308 location_t brace_loc
= c_parser_peek_token (parser
)->location
;
3309 struct c_declarator
*declarator
;
3310 struct c_declspecs
*quals_attrs
= build_null_declspecs ();
3313 struct c_expr dimen
;
3314 dimen
.value
= NULL_TREE
;
3315 dimen
.original_code
= ERROR_MARK
;
3316 dimen
.original_type
= NULL_TREE
;
3317 c_parser_consume_token (parser
);
3318 c_parser_declspecs (parser
, quals_attrs
, false, false, true,
3319 false, false, cla_prefer_id
);
3320 static_seen
= c_parser_next_token_is_keyword (parser
, RID_STATIC
);
3322 c_parser_consume_token (parser
);
3323 if (static_seen
&& !quals_attrs
->declspecs_seen_p
)
3324 c_parser_declspecs (parser
, quals_attrs
, false, false, true,
3325 false, false, cla_prefer_id
);
3326 if (!quals_attrs
->declspecs_seen_p
)
3328 /* If "static" is present, there must be an array dimension.
3329 Otherwise, there may be a dimension, "*", or no
3334 dimen
= c_parser_expr_no_commas (parser
, NULL
);
3338 if (c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
3340 dimen
.value
= NULL_TREE
;
3343 else if (flag_enable_cilkplus
3344 && c_parser_next_token_is (parser
, CPP_COLON
))
3346 dimen
.value
= error_mark_node
;
3348 error_at (c_parser_peek_token (parser
)->location
,
3349 "array notations cannot be used in declaration");
3350 c_parser_consume_token (parser
);
3352 else if (c_parser_next_token_is (parser
, CPP_MULT
))
3354 if (c_parser_peek_2nd_token (parser
)->type
== CPP_CLOSE_SQUARE
)
3356 dimen
.value
= NULL_TREE
;
3358 c_parser_consume_token (parser
);
3363 dimen
= c_parser_expr_no_commas (parser
, NULL
);
3369 dimen
= c_parser_expr_no_commas (parser
, NULL
);
3372 if (c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
3373 c_parser_consume_token (parser
);
3374 else if (flag_enable_cilkplus
3375 && c_parser_next_token_is (parser
, CPP_COLON
))
3377 error_at (c_parser_peek_token (parser
)->location
,
3378 "array notations cannot be used in declaration");
3379 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
3384 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
3389 dimen
= convert_lvalue_to_rvalue (brace_loc
, dimen
, true, true);
3390 declarator
= build_array_declarator (brace_loc
, dimen
.value
, quals_attrs
,
3391 static_seen
, star_seen
);
3392 if (declarator
== NULL
)
3394 inner
= set_array_declarator_inner (declarator
, inner
);
3395 return c_parser_direct_declarator_inner (parser
, id_present
, inner
);
3397 else if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
3400 struct c_arg_info
*args
;
3401 c_parser_consume_token (parser
);
3402 attrs
= c_parser_attributes (parser
);
3403 args
= c_parser_parms_declarator (parser
, id_present
, attrs
);
3408 inner
= build_function_declarator (args
, inner
);
3409 return c_parser_direct_declarator_inner (parser
, id_present
, inner
);
3415 /* Parse a parameter list or identifier list, including the closing
3416 parenthesis but not the opening one. ATTRS are the attributes at
3417 the start of the list. ID_LIST_OK is true if an identifier list is
3418 acceptable; such a list must not have attributes at the start. */
3420 static struct c_arg_info
*
3421 c_parser_parms_declarator (c_parser
*parser
, bool id_list_ok
, tree attrs
)
3424 declare_parm_level ();
3425 /* If the list starts with an identifier, it is an identifier list.
3426 Otherwise, it is either a prototype list or an empty list. */
3429 && c_parser_next_token_is (parser
, CPP_NAME
)
3430 && c_parser_peek_token (parser
)->id_kind
== C_ID_ID
3432 /* Look ahead to detect typos in type names. */
3433 && c_parser_peek_2nd_token (parser
)->type
!= CPP_NAME
3434 && c_parser_peek_2nd_token (parser
)->type
!= CPP_MULT
3435 && c_parser_peek_2nd_token (parser
)->type
!= CPP_OPEN_PAREN
3436 && c_parser_peek_2nd_token (parser
)->type
!= CPP_OPEN_SQUARE
)
3438 tree list
= NULL_TREE
, *nextp
= &list
;
3439 while (c_parser_next_token_is (parser
, CPP_NAME
)
3440 && c_parser_peek_token (parser
)->id_kind
== C_ID_ID
)
3442 *nextp
= build_tree_list (NULL_TREE
,
3443 c_parser_peek_token (parser
)->value
);
3444 nextp
= & TREE_CHAIN (*nextp
);
3445 c_parser_consume_token (parser
);
3446 if (c_parser_next_token_is_not (parser
, CPP_COMMA
))
3448 c_parser_consume_token (parser
);
3449 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3451 c_parser_error (parser
, "expected identifier");
3455 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3457 struct c_arg_info
*ret
= build_arg_info ();
3459 c_parser_consume_token (parser
);
3465 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
3473 struct c_arg_info
*ret
= c_parser_parms_list_declarator (parser
, attrs
,
3480 /* Parse a parameter list (possibly empty), including the closing
3481 parenthesis but not the opening one. ATTRS are the attributes at
3482 the start of the list. EXPR is NULL or an expression that needs to
3483 be evaluated for the side effects of array size expressions in the
3486 static struct c_arg_info
*
3487 c_parser_parms_list_declarator (c_parser
*parser
, tree attrs
, tree expr
)
3489 bool bad_parm
= false;
3491 /* ??? Following the old parser, forward parameter declarations may
3492 use abstract declarators, and if no real parameter declarations
3493 follow the forward declarations then this is not diagnosed. Also
3494 note as above that attributes are ignored as the only contents of
3495 the parentheses, or as the only contents after forward
3497 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3499 struct c_arg_info
*ret
= build_arg_info ();
3500 c_parser_consume_token (parser
);
3503 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
3505 struct c_arg_info
*ret
= build_arg_info ();
3507 if (flag_allow_parameterless_variadic_functions
)
3509 /* F (...) is allowed. */
3510 ret
->types
= NULL_TREE
;
3514 /* Suppress -Wold-style-definition for this case. */
3515 ret
->types
= error_mark_node
;
3516 error_at (c_parser_peek_token (parser
)->location
,
3517 "ISO C requires a named argument before %<...%>");
3519 c_parser_consume_token (parser
);
3520 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3522 c_parser_consume_token (parser
);
3527 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
3532 /* Nonempty list of parameters, either terminated with semicolon
3533 (forward declarations; recurse) or with close parenthesis (normal
3534 function) or with ", ... )" (variadic function). */
3537 /* Parse a parameter. */
3538 struct c_parm
*parm
= c_parser_parameter_declaration (parser
, attrs
);
3543 push_parm_decl (parm
, &expr
);
3544 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
3547 c_parser_consume_token (parser
);
3548 mark_forward_parm_decls ();
3549 new_attrs
= c_parser_attributes (parser
);
3550 return c_parser_parms_list_declarator (parser
, new_attrs
, expr
);
3552 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3554 c_parser_consume_token (parser
);
3558 return get_parm_info (false, expr
);
3560 if (!c_parser_require (parser
, CPP_COMMA
,
3561 "expected %<;%>, %<,%> or %<)%>"))
3563 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
3566 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
3568 c_parser_consume_token (parser
);
3569 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3571 c_parser_consume_token (parser
);
3575 return get_parm_info (true, expr
);
3579 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
3587 /* Parse a parameter declaration. ATTRS are the attributes at the
3588 start of the declaration if it is the first parameter. */
3590 static struct c_parm
*
3591 c_parser_parameter_declaration (c_parser
*parser
, tree attrs
)
3593 struct c_declspecs
*specs
;
3594 struct c_declarator
*declarator
;
3596 tree postfix_attrs
= NULL_TREE
;
3599 /* Accept #pragmas between parameter declarations. */
3600 while (c_parser_next_token_is (parser
, CPP_PRAGMA
))
3601 c_parser_pragma (parser
, pragma_param
);
3603 if (!c_parser_next_token_starts_declspecs (parser
))
3605 c_token
*token
= c_parser_peek_token (parser
);
3608 c_parser_set_source_position_from_token (token
);
3609 if (c_parser_next_tokens_start_typename (parser
, cla_prefer_type
))
3611 error ("unknown type name %qE", token
->value
);
3612 parser
->error
= true;
3614 /* ??? In some Objective-C cases '...' isn't applicable so there
3615 should be a different message. */
3617 c_parser_error (parser
,
3618 "expected declaration specifiers or %<...%>");
3619 c_parser_skip_to_end_of_parameter (parser
);
3622 specs
= build_null_declspecs ();
3625 declspecs_add_attrs (input_location
, specs
, attrs
);
3628 c_parser_declspecs (parser
, specs
, true, true, true, true, false,
3629 cla_nonabstract_decl
);
3630 finish_declspecs (specs
);
3631 pending_xref_error ();
3632 prefix_attrs
= specs
->attrs
;
3633 specs
->attrs
= NULL_TREE
;
3634 declarator
= c_parser_declarator (parser
,
3635 specs
->typespec_kind
!= ctsk_none
,
3636 C_DTR_PARM
, &dummy
);
3637 if (declarator
== NULL
)
3639 c_parser_skip_until_found (parser
, CPP_COMMA
, NULL
);
3642 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
3643 postfix_attrs
= c_parser_attributes (parser
);
3644 return build_c_parm (specs
, chainon (postfix_attrs
, prefix_attrs
),
3648 /* Parse a string literal in an asm expression. It should not be
3649 translated, and wide string literals are an error although
3650 permitted by the syntax. This is a GNU extension.
3655 ??? At present, following the old parser, the caller needs to have
3656 set lex_untranslated_string to 1. It would be better to follow the
3657 C++ parser rather than using this kludge. */
3660 c_parser_asm_string_literal (c_parser
*parser
)
3663 int save_flag
= warn_overlength_strings
;
3664 warn_overlength_strings
= 0;
3665 if (c_parser_next_token_is (parser
, CPP_STRING
))
3667 str
= c_parser_peek_token (parser
)->value
;
3668 c_parser_consume_token (parser
);
3670 else if (c_parser_next_token_is (parser
, CPP_WSTRING
))
3672 error_at (c_parser_peek_token (parser
)->location
,
3673 "wide string literal in %<asm%>");
3674 str
= build_string (1, "");
3675 c_parser_consume_token (parser
);
3679 c_parser_error (parser
, "expected string literal");
3682 warn_overlength_strings
= save_flag
;
3686 /* Parse a simple asm expression. This is used in restricted
3687 contexts, where a full expression with inputs and outputs does not
3688 make sense. This is a GNU extension.
3691 asm ( asm-string-literal )
3695 c_parser_simple_asm_expr (c_parser
*parser
)
3698 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_ASM
));
3699 /* ??? Follow the C++ parser rather than using the
3700 lex_untranslated_string kludge. */
3701 parser
->lex_untranslated_string
= true;
3702 c_parser_consume_token (parser
);
3703 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
3705 parser
->lex_untranslated_string
= false;
3708 str
= c_parser_asm_string_literal (parser
);
3709 parser
->lex_untranslated_string
= false;
3710 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
3712 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
3719 c_parser_attribute_any_word (c_parser
*parser
)
3721 tree attr_name
= NULL_TREE
;
3723 if (c_parser_next_token_is (parser
, CPP_KEYWORD
))
3725 /* ??? See comment above about what keywords are accepted here. */
3727 switch (c_parser_peek_token (parser
)->keyword
)
3758 case RID_TRANSACTION_ATOMIC
:
3759 case RID_TRANSACTION_CANCEL
:
3771 /* Accept __attribute__((__const)) as __attribute__((const)) etc. */
3772 attr_name
= ridpointers
[(int) c_parser_peek_token (parser
)->keyword
];
3774 else if (c_parser_next_token_is (parser
, CPP_NAME
))
3775 attr_name
= c_parser_peek_token (parser
)->value
;
3780 /* Returns true of NAME is an IDENTIFIER_NODE with identiifer "vector,"
3781 "__vector" or "__vector__." */
3784 is_cilkplus_vector_p (tree name
)
3786 if (flag_enable_cilkplus
&& is_attribute_p ("vector", name
))
3791 #define CILK_SIMD_FN_CLAUSE_MASK \
3792 ((OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_VECTORLENGTH) \
3793 | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_LINEAR) \
3794 | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_UNIFORM) \
3795 | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_MASK) \
3796 | (OMP_CLAUSE_MASK_1 << PRAGMA_CILK_CLAUSE_NOMASK))
3798 /* Parses the vector attribute of SIMD enabled functions in Cilk Plus.
3799 VEC_TOKEN is the "vector" token that is replaced with "simd" and
3800 pushed into the token list.
3803 vector (<vector attributes>). */
3806 c_parser_cilk_simd_fn_vector_attrs (c_parser
*parser
, c_token vec_token
)
3808 gcc_assert (is_cilkplus_vector_p (vec_token
.value
));
3810 int paren_scope
= 0;
3811 vec_safe_push (parser
->cilk_simd_fn_tokens
, vec_token
);
3812 /* Consume the "vector" token. */
3813 c_parser_consume_token (parser
);
3815 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
3817 c_parser_consume_token (parser
);
3820 while (paren_scope
> 0)
3822 c_token
*token
= c_parser_peek_token (parser
);
3823 if (token
->type
== CPP_OPEN_PAREN
)
3825 else if (token
->type
== CPP_CLOSE_PAREN
)
3827 /* Do not push the last ')' since we are not pushing the '('. */
3828 if (!(token
->type
== CPP_CLOSE_PAREN
&& paren_scope
== 0))
3829 vec_safe_push (parser
->cilk_simd_fn_tokens
, *token
);
3830 c_parser_consume_token (parser
);
3833 /* Since we are converting an attribute to a pragma, we need to end the
3834 attribute with PRAGMA_EOL. */
3836 memset (&eol_token
, 0, sizeof (eol_token
));
3837 eol_token
.type
= CPP_PRAGMA_EOL
;
3838 vec_safe_push (parser
->cilk_simd_fn_tokens
, eol_token
);
3841 /* Add 2 CPP_EOF at the end of PARSER->ELEM_FN_TOKENS vector. */
3844 c_finish_cilk_simd_fn_tokens (c_parser
*parser
)
3846 c_token last_token
= parser
->cilk_simd_fn_tokens
->last ();
3848 /* c_parser_attributes is called in several places, so if these EOF
3849 tokens are already inserted, then don't do them again. */
3850 if (last_token
.type
== CPP_EOF
)
3853 /* Two CPP_EOF token are added as a safety net since the normal C
3854 front-end has two token look-ahead. */
3856 eof_token
.type
= CPP_EOF
;
3857 vec_safe_push (parser
->cilk_simd_fn_tokens
, eof_token
);
3858 vec_safe_push (parser
->cilk_simd_fn_tokens
, eof_token
);
3861 /* Parse (possibly empty) attributes. This is a GNU extension.
3865 attributes attribute
3868 __attribute__ ( ( attribute-list ) )
3872 attribute_list , attrib
3877 any-word ( identifier )
3878 any-word ( identifier , nonempty-expr-list )
3879 any-word ( expr-list )
3881 where the "identifier" must not be declared as a type, and
3882 "any-word" may be any identifier (including one declared as a
3883 type), a reserved word storage class specifier, type specifier or
3884 type qualifier. ??? This still leaves out most reserved keywords
3885 (following the old parser), shouldn't we include them, and why not
3886 allow identifiers declared as types to start the arguments? */
3889 c_parser_attributes (c_parser
*parser
)
3891 tree attrs
= NULL_TREE
;
3892 while (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
3894 /* ??? Follow the C++ parser rather than using the
3895 lex_untranslated_string kludge. */
3896 parser
->lex_untranslated_string
= true;
3897 c_parser_consume_token (parser
);
3898 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
3900 parser
->lex_untranslated_string
= false;
3903 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
3905 parser
->lex_untranslated_string
= false;
3906 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
3909 /* Parse the attribute list. */
3910 while (c_parser_next_token_is (parser
, CPP_COMMA
)
3911 || c_parser_next_token_is (parser
, CPP_NAME
)
3912 || c_parser_next_token_is (parser
, CPP_KEYWORD
))
3914 tree attr
, attr_name
, attr_args
;
3915 vec
<tree
, va_gc
> *expr_list
;
3916 if (c_parser_next_token_is (parser
, CPP_COMMA
))
3918 c_parser_consume_token (parser
);
3922 attr_name
= c_parser_attribute_any_word (parser
);
3923 if (attr_name
== NULL
)
3925 if (is_cilkplus_vector_p (attr_name
))
3927 c_token
*v_token
= c_parser_peek_token (parser
);
3928 c_parser_cilk_simd_fn_vector_attrs (parser
, *v_token
);
3931 c_parser_consume_token (parser
);
3932 if (c_parser_next_token_is_not (parser
, CPP_OPEN_PAREN
))
3934 attr
= build_tree_list (attr_name
, NULL_TREE
);
3935 attrs
= chainon (attrs
, attr
);
3938 c_parser_consume_token (parser
);
3939 /* Parse the attribute contents. If they start with an
3940 identifier which is followed by a comma or close
3941 parenthesis, then the arguments start with that
3942 identifier; otherwise they are an expression list.
3943 In objective-c the identifier may be a classname. */
3944 if (c_parser_next_token_is (parser
, CPP_NAME
)
3945 && (c_parser_peek_token (parser
)->id_kind
== C_ID_ID
3946 || (c_dialect_objc ()
3947 && c_parser_peek_token (parser
)->id_kind
== C_ID_CLASSNAME
))
3948 && ((c_parser_peek_2nd_token (parser
)->type
== CPP_COMMA
)
3949 || (c_parser_peek_2nd_token (parser
)->type
3950 == CPP_CLOSE_PAREN
)))
3952 tree arg1
= c_parser_peek_token (parser
)->value
;
3953 c_parser_consume_token (parser
);
3954 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3955 attr_args
= build_tree_list (NULL_TREE
, arg1
);
3959 c_parser_consume_token (parser
);
3960 expr_list
= c_parser_expr_list (parser
, false, true,
3962 tree_list
= build_tree_list_vec (expr_list
);
3963 attr_args
= tree_cons (NULL_TREE
, arg1
, tree_list
);
3964 release_tree_vector (expr_list
);
3969 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3970 attr_args
= NULL_TREE
;
3973 expr_list
= c_parser_expr_list (parser
, false, true,
3975 attr_args
= build_tree_list_vec (expr_list
);
3976 release_tree_vector (expr_list
);
3979 attr
= build_tree_list (attr_name
, attr_args
);
3980 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3981 c_parser_consume_token (parser
);
3984 parser
->lex_untranslated_string
= false;
3985 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
3989 attrs
= chainon (attrs
, attr
);
3991 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
3992 c_parser_consume_token (parser
);
3995 parser
->lex_untranslated_string
= false;
3996 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
4000 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
4001 c_parser_consume_token (parser
);
4004 parser
->lex_untranslated_string
= false;
4005 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
4009 parser
->lex_untranslated_string
= false;
4012 if (flag_enable_cilkplus
&& !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
4013 c_finish_cilk_simd_fn_tokens (parser
);
4017 /* Parse a type name (C90 6.5.5, C99 6.7.6).
4020 specifier-qualifier-list abstract-declarator[opt]
4023 static struct c_type_name
*
4024 c_parser_type_name (c_parser
*parser
)
4026 struct c_declspecs
*specs
= build_null_declspecs ();
4027 struct c_declarator
*declarator
;
4028 struct c_type_name
*ret
;
4030 c_parser_declspecs (parser
, specs
, false, true, true, false, false,
4032 if (!specs
->declspecs_seen_p
)
4034 c_parser_error (parser
, "expected specifier-qualifier-list");
4037 if (specs
->type
!= error_mark_node
)
4039 pending_xref_error ();
4040 finish_declspecs (specs
);
4042 declarator
= c_parser_declarator (parser
,
4043 specs
->typespec_kind
!= ctsk_none
,
4044 C_DTR_ABSTRACT
, &dummy
);
4045 if (declarator
== NULL
)
4047 ret
= XOBNEW (&parser_obstack
, struct c_type_name
);
4049 ret
->declarator
= declarator
;
4053 /* Parse an initializer (C90 6.5.7, C99 6.7.8).
4056 assignment-expression
4057 { initializer-list }
4058 { initializer-list , }
4061 designation[opt] initializer
4062 initializer-list , designation[opt] initializer
4069 designator-list designator
4076 [ constant-expression ]
4088 [ constant-expression ... constant-expression ]
4090 Any expression without commas is accepted in the syntax for the
4091 constant-expressions, with non-constant expressions rejected later.
4093 This function is only used for top-level initializers; for nested
4094 ones, see c_parser_initval. */
4096 static struct c_expr
4097 c_parser_initializer (c_parser
*parser
)
4099 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
4100 return c_parser_braced_init (parser
, NULL_TREE
, false);
4104 location_t loc
= c_parser_peek_token (parser
)->location
;
4105 ret
= c_parser_expr_no_commas (parser
, NULL
);
4106 if (TREE_CODE (ret
.value
) != STRING_CST
4107 && TREE_CODE (ret
.value
) != COMPOUND_LITERAL_EXPR
)
4108 ret
= convert_lvalue_to_rvalue (loc
, ret
, true, true);
4113 /* Parse a braced initializer list. TYPE is the type specified for a
4114 compound literal, and NULL_TREE for other initializers and for
4115 nested braced lists. NESTED_P is true for nested braced lists,
4116 false for the list of a compound literal or the list that is the
4117 top-level initializer in a declaration. */
4119 static struct c_expr
4120 c_parser_braced_init (c_parser
*parser
, tree type
, bool nested_p
)
4123 struct obstack braced_init_obstack
;
4124 location_t brace_loc
= c_parser_peek_token (parser
)->location
;
4125 gcc_obstack_init (&braced_init_obstack
);
4126 gcc_assert (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
));
4127 c_parser_consume_token (parser
);
4129 push_init_level (0, &braced_init_obstack
);
4131 really_start_incremental_init (type
);
4132 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
4134 pedwarn (brace_loc
, OPT_Wpedantic
, "ISO C forbids empty initializer braces");
4138 /* Parse a non-empty initializer list, possibly with a trailing
4142 c_parser_initelt (parser
, &braced_init_obstack
);
4145 if (c_parser_next_token_is (parser
, CPP_COMMA
))
4146 c_parser_consume_token (parser
);
4149 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
4153 if (c_parser_next_token_is_not (parser
, CPP_CLOSE_BRACE
))
4155 ret
.value
= error_mark_node
;
4156 ret
.original_code
= ERROR_MARK
;
4157 ret
.original_type
= NULL
;
4158 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
, "expected %<}%>");
4159 pop_init_level (0, &braced_init_obstack
);
4160 obstack_free (&braced_init_obstack
, NULL
);
4163 c_parser_consume_token (parser
);
4164 ret
= pop_init_level (0, &braced_init_obstack
);
4165 obstack_free (&braced_init_obstack
, NULL
);
4169 /* Parse a nested initializer, including designators. */
4172 c_parser_initelt (c_parser
*parser
, struct obstack
* braced_init_obstack
)
4174 /* Parse any designator or designator list. A single array
4175 designator may have the subsequent "=" omitted in GNU C, but a
4176 longer list or a structure member designator may not. */
4177 if (c_parser_next_token_is (parser
, CPP_NAME
)
4178 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
)
4180 /* Old-style structure member designator. */
4181 set_init_label (c_parser_peek_token (parser
)->value
,
4182 braced_init_obstack
);
4183 /* Use the colon as the error location. */
4184 pedwarn (c_parser_peek_2nd_token (parser
)->location
, OPT_Wpedantic
,
4185 "obsolete use of designated initializer with %<:%>");
4186 c_parser_consume_token (parser
);
4187 c_parser_consume_token (parser
);
4191 /* des_seen is 0 if there have been no designators, 1 if there
4192 has been a single array designator and 2 otherwise. */
4194 /* Location of a designator. */
4195 location_t des_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
4196 while (c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
)
4197 || c_parser_next_token_is (parser
, CPP_DOT
))
4199 int des_prev
= des_seen
;
4201 des_loc
= c_parser_peek_token (parser
)->location
;
4204 if (c_parser_next_token_is (parser
, CPP_DOT
))
4207 c_parser_consume_token (parser
);
4208 if (c_parser_next_token_is (parser
, CPP_NAME
))
4210 set_init_label (c_parser_peek_token (parser
)->value
,
4211 braced_init_obstack
);
4212 c_parser_consume_token (parser
);
4217 init
.value
= error_mark_node
;
4218 init
.original_code
= ERROR_MARK
;
4219 init
.original_type
= NULL
;
4220 c_parser_error (parser
, "expected identifier");
4221 c_parser_skip_until_found (parser
, CPP_COMMA
, NULL
);
4222 process_init_element (init
, false, braced_init_obstack
);
4229 location_t ellipsis_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
4230 /* ??? Following the old parser, [ objc-receiver
4231 objc-message-args ] is accepted as an initializer,
4232 being distinguished from a designator by what follows
4233 the first assignment expression inside the square
4234 brackets, but after a first array designator a
4235 subsequent square bracket is for Objective-C taken to
4236 start an expression, using the obsolete form of
4237 designated initializer without '=', rather than
4238 possibly being a second level of designation: in LALR
4239 terms, the '[' is shifted rather than reducing
4240 designator to designator-list. */
4241 if (des_prev
== 1 && c_dialect_objc ())
4243 des_seen
= des_prev
;
4246 if (des_prev
== 0 && c_dialect_objc ())
4248 /* This might be an array designator or an
4249 Objective-C message expression. If the former,
4250 continue parsing here; if the latter, parse the
4251 remainder of the initializer given the starting
4252 primary-expression. ??? It might make sense to
4253 distinguish when des_prev == 1 as well; see
4254 previous comment. */
4256 struct c_expr mexpr
;
4257 c_parser_consume_token (parser
);
4258 if (c_parser_peek_token (parser
)->type
== CPP_NAME
4259 && ((c_parser_peek_token (parser
)->id_kind
4261 || (c_parser_peek_token (parser
)->id_kind
4262 == C_ID_CLASSNAME
)))
4264 /* Type name receiver. */
4265 tree id
= c_parser_peek_token (parser
)->value
;
4266 c_parser_consume_token (parser
);
4267 rec
= objc_get_class_reference (id
);
4268 goto parse_message_args
;
4270 first
= c_parser_expr_no_commas (parser
, NULL
).value
;
4271 mark_exp_read (first
);
4272 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
)
4273 || c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
4274 goto array_desig_after_first
;
4275 /* Expression receiver. So far only one part
4276 without commas has been parsed; there might be
4277 more of the expression. */
4279 while (c_parser_next_token_is (parser
, CPP_COMMA
))
4282 location_t comma_loc
, exp_loc
;
4283 comma_loc
= c_parser_peek_token (parser
)->location
;
4284 c_parser_consume_token (parser
);
4285 exp_loc
= c_parser_peek_token (parser
)->location
;
4286 next
= c_parser_expr_no_commas (parser
, NULL
);
4287 next
= convert_lvalue_to_rvalue (exp_loc
, next
,
4289 rec
= build_compound_expr (comma_loc
, rec
, next
.value
);
4292 /* Now parse the objc-message-args. */
4293 args
= c_parser_objc_message_args (parser
);
4294 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
4297 = objc_build_message_expr (rec
, args
);
4298 mexpr
.original_code
= ERROR_MARK
;
4299 mexpr
.original_type
= NULL
;
4300 /* Now parse and process the remainder of the
4301 initializer, starting with this message
4302 expression as a primary-expression. */
4303 c_parser_initval (parser
, &mexpr
, braced_init_obstack
);
4306 c_parser_consume_token (parser
);
4307 first
= c_parser_expr_no_commas (parser
, NULL
).value
;
4308 mark_exp_read (first
);
4309 array_desig_after_first
:
4310 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
4312 ellipsis_loc
= c_parser_peek_token (parser
)->location
;
4313 c_parser_consume_token (parser
);
4314 second
= c_parser_expr_no_commas (parser
, NULL
).value
;
4315 mark_exp_read (second
);
4319 if (c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
4321 c_parser_consume_token (parser
);
4322 set_init_index (first
, second
, braced_init_obstack
);
4324 pedwarn (ellipsis_loc
, OPT_Wpedantic
,
4325 "ISO C forbids specifying range of elements to initialize");
4328 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
4334 if (c_parser_next_token_is (parser
, CPP_EQ
))
4337 pedwarn (des_loc
, OPT_Wpedantic
,
4338 "ISO C90 forbids specifying subobject to initialize");
4339 c_parser_consume_token (parser
);
4344 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
4345 "obsolete use of designated initializer without %<=%>");
4349 init
.value
= error_mark_node
;
4350 init
.original_code
= ERROR_MARK
;
4351 init
.original_type
= NULL
;
4352 c_parser_error (parser
, "expected %<=%>");
4353 c_parser_skip_until_found (parser
, CPP_COMMA
, NULL
);
4354 process_init_element (init
, false, braced_init_obstack
);
4360 c_parser_initval (parser
, NULL
, braced_init_obstack
);
4363 /* Parse a nested initializer; as c_parser_initializer but parses
4364 initializers within braced lists, after any designators have been
4365 applied. If AFTER is not NULL then it is an Objective-C message
4366 expression which is the primary-expression starting the
4370 c_parser_initval (c_parser
*parser
, struct c_expr
*after
,
4371 struct obstack
* braced_init_obstack
)
4374 gcc_assert (!after
|| c_dialect_objc ());
4375 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
) && !after
)
4376 init
= c_parser_braced_init (parser
, NULL_TREE
, true);
4379 location_t loc
= c_parser_peek_token (parser
)->location
;
4380 init
= c_parser_expr_no_commas (parser
, after
);
4381 if (init
.value
!= NULL_TREE
4382 && TREE_CODE (init
.value
) != STRING_CST
4383 && TREE_CODE (init
.value
) != COMPOUND_LITERAL_EXPR
)
4384 init
= convert_lvalue_to_rvalue (loc
, init
, true, true);
4386 process_init_element (init
, false, braced_init_obstack
);
4389 /* Parse a compound statement (possibly a function body) (C90 6.6.2,
4393 { block-item-list[opt] }
4394 { label-declarations block-item-list }
4398 block-item-list block-item
4410 { label-declarations block-item-list }
4413 __extension__ nested-declaration
4414 nested-function-definition
4418 label-declarations label-declaration
4421 __label__ identifier-list ;
4423 Allowing the mixing of declarations and code is new in C99. The
4424 GNU syntax also permits (not shown above) labels at the end of
4425 compound statements, which yield an error. We don't allow labels
4426 on declarations; this might seem like a natural extension, but
4427 there would be a conflict between attributes on the label and
4428 prefix attributes on the declaration. ??? The syntax follows the
4429 old parser in requiring something after label declarations.
4430 Although they are erroneous if the labels declared aren't defined,
4431 is it useful for the syntax to be this way?
4444 cancellation-point-directive */
4447 c_parser_compound_statement (c_parser
*parser
)
4450 location_t brace_loc
;
4451 brace_loc
= c_parser_peek_token (parser
)->location
;
4452 if (!c_parser_require (parser
, CPP_OPEN_BRACE
, "expected %<{%>"))
4454 /* Ensure a scope is entered and left anyway to avoid confusion
4455 if we have just prepared to enter a function body. */
4456 stmt
= c_begin_compound_stmt (true);
4457 c_end_compound_stmt (brace_loc
, stmt
, true);
4458 return error_mark_node
;
4460 stmt
= c_begin_compound_stmt (true);
4461 c_parser_compound_statement_nostart (parser
);
4463 /* If the compound stmt contains array notations, then we expand them. */
4464 if (flag_enable_cilkplus
&& contains_array_notation_expr (stmt
))
4465 stmt
= expand_array_notation_exprs (stmt
);
4466 return c_end_compound_stmt (brace_loc
, stmt
, true);
4469 /* Parse a compound statement except for the opening brace. This is
4470 used for parsing both compound statements and statement expressions
4471 (which follow different paths to handling the opening). */
4474 c_parser_compound_statement_nostart (c_parser
*parser
)
4476 bool last_stmt
= false;
4477 bool last_label
= false;
4478 bool save_valid_for_pragma
= valid_location_for_stdc_pragma_p ();
4479 location_t label_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
4480 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
4482 c_parser_consume_token (parser
);
4485 mark_valid_location_for_stdc_pragma (true);
4486 if (c_parser_next_token_is_keyword (parser
, RID_LABEL
))
4488 /* Read zero or more forward-declarations for labels that nested
4489 functions can jump to. */
4490 mark_valid_location_for_stdc_pragma (false);
4491 while (c_parser_next_token_is_keyword (parser
, RID_LABEL
))
4493 label_loc
= c_parser_peek_token (parser
)->location
;
4494 c_parser_consume_token (parser
);
4495 /* Any identifiers, including those declared as type names,
4500 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
4502 c_parser_error (parser
, "expected identifier");
4506 = declare_label (c_parser_peek_token (parser
)->value
);
4507 C_DECLARED_LABEL_FLAG (label
) = 1;
4508 add_stmt (build_stmt (label_loc
, DECL_EXPR
, label
));
4509 c_parser_consume_token (parser
);
4510 if (c_parser_next_token_is (parser
, CPP_COMMA
))
4511 c_parser_consume_token (parser
);
4515 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
4517 pedwarn (label_loc
, OPT_Wpedantic
, "ISO C forbids label declarations");
4519 /* We must now have at least one statement, label or declaration. */
4520 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
4522 mark_valid_location_for_stdc_pragma (save_valid_for_pragma
);
4523 c_parser_error (parser
, "expected declaration or statement");
4524 c_parser_consume_token (parser
);
4527 while (c_parser_next_token_is_not (parser
, CPP_CLOSE_BRACE
))
4529 location_t loc
= c_parser_peek_token (parser
)->location
;
4530 if (c_parser_next_token_is_keyword (parser
, RID_CASE
)
4531 || c_parser_next_token_is_keyword (parser
, RID_DEFAULT
)
4532 || (c_parser_next_token_is (parser
, CPP_NAME
)
4533 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
))
4535 if (c_parser_next_token_is_keyword (parser
, RID_CASE
))
4536 label_loc
= c_parser_peek_2nd_token (parser
)->location
;
4538 label_loc
= c_parser_peek_token (parser
)->location
;
4541 mark_valid_location_for_stdc_pragma (false);
4542 c_parser_label (parser
);
4544 else if (!last_label
4545 && c_parser_next_tokens_start_declaration (parser
))
4548 mark_valid_location_for_stdc_pragma (false);
4549 c_parser_declaration_or_fndef (parser
, true, true, true, true,
4553 (pedantic
&& !flag_isoc99
)
4555 : OPT_Wdeclaration_after_statement
,
4556 "ISO C90 forbids mixed declarations and code");
4559 else if (!last_label
4560 && c_parser_next_token_is_keyword (parser
, RID_EXTENSION
))
4562 /* __extension__ can start a declaration, but is also an
4563 unary operator that can start an expression. Consume all
4564 but the last of a possible series of __extension__ to
4566 while (c_parser_peek_2nd_token (parser
)->type
== CPP_KEYWORD
4567 && (c_parser_peek_2nd_token (parser
)->keyword
4569 c_parser_consume_token (parser
);
4570 if (c_token_starts_declaration (c_parser_peek_2nd_token (parser
)))
4573 ext
= disable_extension_diagnostics ();
4574 c_parser_consume_token (parser
);
4576 mark_valid_location_for_stdc_pragma (false);
4577 c_parser_declaration_or_fndef (parser
, true, true, true, true,
4579 /* Following the old parser, __extension__ does not
4580 disable this diagnostic. */
4581 restore_extension_diagnostics (ext
);
4583 pedwarn_c90 (loc
, (pedantic
&& !flag_isoc99
)
4585 : OPT_Wdeclaration_after_statement
,
4586 "ISO C90 forbids mixed declarations and code");
4592 else if (c_parser_next_token_is (parser
, CPP_PRAGMA
))
4594 /* External pragmas, and some omp pragmas, are not associated
4595 with regular c code, and so are not to be considered statements
4596 syntactically. This ensures that the user doesn't put them
4597 places that would turn into syntax errors if the directive
4599 if (c_parser_pragma (parser
, pragma_compound
))
4600 last_label
= false, last_stmt
= true;
4602 else if (c_parser_next_token_is (parser
, CPP_EOF
))
4604 mark_valid_location_for_stdc_pragma (save_valid_for_pragma
);
4605 c_parser_error (parser
, "expected declaration or statement");
4608 else if (c_parser_next_token_is_keyword (parser
, RID_ELSE
))
4610 if (parser
->in_if_block
)
4612 mark_valid_location_for_stdc_pragma (save_valid_for_pragma
);
4613 error_at (loc
, """expected %<}%> before %<else%>");
4618 error_at (loc
, "%<else%> without a previous %<if%>");
4619 c_parser_consume_token (parser
);
4628 mark_valid_location_for_stdc_pragma (false);
4629 c_parser_statement_after_labels (parser
);
4632 parser
->error
= false;
4635 error_at (label_loc
, "label at end of compound statement");
4636 c_parser_consume_token (parser
);
4637 /* Restore the value we started with. */
4638 mark_valid_location_for_stdc_pragma (save_valid_for_pragma
);
4641 /* Parse a label (C90 6.6.1, C99 6.8.1).
4644 identifier : attributes[opt]
4645 case constant-expression :
4651 case constant-expression ... constant-expression :
4653 The use of attributes on labels is a GNU extension. The syntax in
4654 GNU C accepts any expressions without commas, non-constant
4655 expressions being rejected later. */
4658 c_parser_label (c_parser
*parser
)
4660 location_t loc1
= c_parser_peek_token (parser
)->location
;
4661 tree label
= NULL_TREE
;
4662 if (c_parser_next_token_is_keyword (parser
, RID_CASE
))
4665 c_parser_consume_token (parser
);
4666 exp1
= c_parser_expr_no_commas (parser
, NULL
).value
;
4667 if (c_parser_next_token_is (parser
, CPP_COLON
))
4669 c_parser_consume_token (parser
);
4670 label
= do_case (loc1
, exp1
, NULL_TREE
);
4672 else if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
4674 c_parser_consume_token (parser
);
4675 exp2
= c_parser_expr_no_commas (parser
, NULL
).value
;
4676 if (c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
4677 label
= do_case (loc1
, exp1
, exp2
);
4680 c_parser_error (parser
, "expected %<:%> or %<...%>");
4682 else if (c_parser_next_token_is_keyword (parser
, RID_DEFAULT
))
4684 c_parser_consume_token (parser
);
4685 if (c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
4686 label
= do_case (loc1
, NULL_TREE
, NULL_TREE
);
4690 tree name
= c_parser_peek_token (parser
)->value
;
4693 location_t loc2
= c_parser_peek_token (parser
)->location
;
4694 gcc_assert (c_parser_next_token_is (parser
, CPP_NAME
));
4695 c_parser_consume_token (parser
);
4696 gcc_assert (c_parser_next_token_is (parser
, CPP_COLON
));
4697 c_parser_consume_token (parser
);
4698 attrs
= c_parser_attributes (parser
);
4699 tlab
= define_label (loc2
, name
);
4702 decl_attributes (&tlab
, attrs
, 0);
4703 label
= add_stmt (build_stmt (loc1
, LABEL_EXPR
, tlab
));
4708 if (c_parser_next_tokens_start_declaration (parser
))
4710 error_at (c_parser_peek_token (parser
)->location
,
4711 "a label can only be part of a statement and "
4712 "a declaration is not a statement");
4713 c_parser_declaration_or_fndef (parser
, /*fndef_ok*/ false,
4714 /*static_assert_ok*/ true,
4715 /*empty_ok*/ true, /*nested*/ true,
4716 /*start_attr_ok*/ true, NULL
,
4722 /* Parse a statement (C90 6.6, C99 6.8).
4727 expression-statement
4735 expression-statement:
4738 selection-statement:
4742 iteration-statement:
4751 return expression[opt] ;
4764 objc-throw-statement
4765 objc-try-catch-statement
4766 objc-synchronized-statement
4768 objc-throw-statement:
4784 parallel-for-construct
4785 parallel-for-simd-construct
4786 parallel-sections-construct
4793 parallel-directive structured-block
4796 for-directive iteration-statement
4799 simd-directive iteration-statements
4802 for-simd-directive iteration-statements
4805 sections-directive section-scope
4808 single-directive structured-block
4810 parallel-for-construct:
4811 parallel-for-directive iteration-statement
4813 parallel-for-simd-construct:
4814 parallel-for-simd-directive iteration-statement
4816 parallel-sections-construct:
4817 parallel-sections-directive section-scope
4820 master-directive structured-block
4823 critical-directive structured-block
4826 atomic-directive expression-statement
4829 ordered-directive structured-block
4831 Transactional Memory:
4834 transaction-statement
4835 transaction-cancel-statement
4839 c_parser_statement (c_parser
*parser
)
4841 while (c_parser_next_token_is_keyword (parser
, RID_CASE
)
4842 || c_parser_next_token_is_keyword (parser
, RID_DEFAULT
)
4843 || (c_parser_next_token_is (parser
, CPP_NAME
)
4844 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
))
4845 c_parser_label (parser
);
4846 c_parser_statement_after_labels (parser
);
4849 /* Parse a statement, other than a labeled statement. */
4852 c_parser_statement_after_labels (c_parser
*parser
)
4854 location_t loc
= c_parser_peek_token (parser
)->location
;
4855 tree stmt
= NULL_TREE
;
4856 bool in_if_block
= parser
->in_if_block
;
4857 parser
->in_if_block
= false;
4858 switch (c_parser_peek_token (parser
)->type
)
4860 case CPP_OPEN_BRACE
:
4861 add_stmt (c_parser_compound_statement (parser
));
4864 switch (c_parser_peek_token (parser
)->keyword
)
4867 c_parser_if_statement (parser
);
4870 c_parser_switch_statement (parser
);
4873 c_parser_while_statement (parser
, false);
4876 c_parser_do_statement (parser
, false);
4879 c_parser_for_statement (parser
, false);
4882 c_parser_consume_token (parser
);
4883 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
4884 if (!flag_enable_cilkplus
)
4885 error_at (loc
, "-fcilkplus must be enabled to use %<_Cilk_sync%>");
4887 add_stmt (build_cilk_sync ());
4890 c_parser_consume_token (parser
);
4891 if (c_parser_next_token_is (parser
, CPP_NAME
))
4893 stmt
= c_finish_goto_label (loc
,
4894 c_parser_peek_token (parser
)->value
);
4895 c_parser_consume_token (parser
);
4897 else if (c_parser_next_token_is (parser
, CPP_MULT
))
4901 c_parser_consume_token (parser
);
4902 val
= c_parser_expression (parser
);
4903 val
= convert_lvalue_to_rvalue (loc
, val
, false, true);
4904 stmt
= c_finish_goto_ptr (loc
, val
.value
);
4907 c_parser_error (parser
, "expected identifier or %<*%>");
4908 goto expect_semicolon
;
4910 c_parser_consume_token (parser
);
4911 stmt
= c_finish_bc_stmt (loc
, &c_cont_label
, false);
4912 goto expect_semicolon
;
4914 c_parser_consume_token (parser
);
4915 stmt
= c_finish_bc_stmt (loc
, &c_break_label
, true);
4916 goto expect_semicolon
;
4918 c_parser_consume_token (parser
);
4919 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
4921 stmt
= c_finish_return (loc
, NULL_TREE
, NULL_TREE
);
4922 c_parser_consume_token (parser
);
4926 struct c_expr expr
= c_parser_expression_conv (parser
);
4927 mark_exp_read (expr
.value
);
4928 stmt
= c_finish_return (loc
, expr
.value
, expr
.original_type
);
4929 goto expect_semicolon
;
4933 stmt
= c_parser_asm_statement (parser
);
4935 case RID_TRANSACTION_ATOMIC
:
4936 case RID_TRANSACTION_RELAXED
:
4937 stmt
= c_parser_transaction (parser
,
4938 c_parser_peek_token (parser
)->keyword
);
4940 case RID_TRANSACTION_CANCEL
:
4941 stmt
= c_parser_transaction_cancel (parser
);
4942 goto expect_semicolon
;
4944 gcc_assert (c_dialect_objc ());
4945 c_parser_consume_token (parser
);
4946 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
4948 stmt
= objc_build_throw_stmt (loc
, NULL_TREE
);
4949 c_parser_consume_token (parser
);
4953 struct c_expr expr
= c_parser_expression (parser
);
4954 expr
= convert_lvalue_to_rvalue (loc
, expr
, false, false);
4955 expr
.value
= c_fully_fold (expr
.value
, false, NULL
);
4956 stmt
= objc_build_throw_stmt (loc
, expr
.value
);
4957 goto expect_semicolon
;
4961 gcc_assert (c_dialect_objc ());
4962 c_parser_objc_try_catch_finally_statement (parser
);
4964 case RID_AT_SYNCHRONIZED
:
4965 gcc_assert (c_dialect_objc ());
4966 c_parser_objc_synchronized_statement (parser
);
4973 c_parser_consume_token (parser
);
4975 case CPP_CLOSE_PAREN
:
4976 case CPP_CLOSE_SQUARE
:
4977 /* Avoid infinite loop in error recovery:
4978 c_parser_skip_until_found stops at a closing nesting
4979 delimiter without consuming it, but here we need to consume
4980 it to proceed further. */
4981 c_parser_error (parser
, "expected statement");
4982 c_parser_consume_token (parser
);
4985 c_parser_pragma (parser
, pragma_stmt
);
4989 stmt
= c_finish_expr_stmt (loc
, c_parser_expression_conv (parser
).value
);
4991 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
4994 /* Two cases cannot and do not have line numbers associated: If stmt
4995 is degenerate, such as "2;", then stmt is an INTEGER_CST, which
4996 cannot hold line numbers. But that's OK because the statement
4997 will either be changed to a MODIFY_EXPR during gimplification of
4998 the statement expr, or discarded. If stmt was compound, but
4999 without new variables, we will have skipped the creation of a
5000 BIND and will have a bare STATEMENT_LIST. But that's OK because
5001 (recursively) all of the component statements should already have
5002 line numbers assigned. ??? Can we discard no-op statements
5004 if (CAN_HAVE_LOCATION_P (stmt
)
5005 && EXPR_LOCATION (stmt
) == UNKNOWN_LOCATION
)
5006 SET_EXPR_LOCATION (stmt
, loc
);
5008 parser
->in_if_block
= in_if_block
;
5011 /* Parse the condition from an if, do, while or for statements. */
5014 c_parser_condition (c_parser
*parser
)
5016 location_t loc
= c_parser_peek_token (parser
)->location
;
5018 cond
= c_parser_expression_conv (parser
).value
;
5019 cond
= c_objc_common_truthvalue_conversion (loc
, cond
);
5020 cond
= c_fully_fold (cond
, false, NULL
);
5021 if (warn_sequence_point
)
5022 verify_sequence_points (cond
);
5026 /* Parse a parenthesized condition from an if, do or while statement.
5032 c_parser_paren_condition (c_parser
*parser
)
5035 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
5036 return error_mark_node
;
5037 cond
= c_parser_condition (parser
);
5038 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
5042 /* Parse a statement which is a block in C99. */
5045 c_parser_c99_block_statement (c_parser
*parser
)
5047 tree block
= c_begin_compound_stmt (flag_isoc99
);
5048 location_t loc
= c_parser_peek_token (parser
)->location
;
5049 c_parser_statement (parser
);
5050 return c_end_compound_stmt (loc
, block
, flag_isoc99
);
5053 /* Parse the body of an if statement. This is just parsing a
5054 statement but (a) it is a block in C99, (b) we track whether the
5055 body is an if statement for the sake of -Wparentheses warnings, (c)
5056 we handle an empty body specially for the sake of -Wempty-body
5057 warnings, and (d) we call parser_compound_statement directly
5058 because c_parser_statement_after_labels resets
5059 parser->in_if_block. */
5062 c_parser_if_body (c_parser
*parser
, bool *if_p
)
5064 tree block
= c_begin_compound_stmt (flag_isoc99
);
5065 location_t body_loc
= c_parser_peek_token (parser
)->location
;
5066 while (c_parser_next_token_is_keyword (parser
, RID_CASE
)
5067 || c_parser_next_token_is_keyword (parser
, RID_DEFAULT
)
5068 || (c_parser_next_token_is (parser
, CPP_NAME
)
5069 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
))
5070 c_parser_label (parser
);
5071 *if_p
= c_parser_next_token_is_keyword (parser
, RID_IF
);
5072 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
5074 location_t loc
= c_parser_peek_token (parser
)->location
;
5075 add_stmt (build_empty_stmt (loc
));
5076 c_parser_consume_token (parser
);
5077 if (!c_parser_next_token_is_keyword (parser
, RID_ELSE
))
5078 warning_at (loc
, OPT_Wempty_body
,
5079 "suggest braces around empty body in an %<if%> statement");
5081 else if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
5082 add_stmt (c_parser_compound_statement (parser
));
5084 c_parser_statement_after_labels (parser
);
5085 return c_end_compound_stmt (body_loc
, block
, flag_isoc99
);
5088 /* Parse the else body of an if statement. This is just parsing a
5089 statement but (a) it is a block in C99, (b) we handle an empty body
5090 specially for the sake of -Wempty-body warnings. */
5093 c_parser_else_body (c_parser
*parser
)
5095 location_t else_loc
= c_parser_peek_token (parser
)->location
;
5096 tree block
= c_begin_compound_stmt (flag_isoc99
);
5097 while (c_parser_next_token_is_keyword (parser
, RID_CASE
)
5098 || c_parser_next_token_is_keyword (parser
, RID_DEFAULT
)
5099 || (c_parser_next_token_is (parser
, CPP_NAME
)
5100 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
))
5101 c_parser_label (parser
);
5102 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
5104 location_t loc
= c_parser_peek_token (parser
)->location
;
5107 "suggest braces around empty body in an %<else%> statement");
5108 add_stmt (build_empty_stmt (loc
));
5109 c_parser_consume_token (parser
);
5112 c_parser_statement_after_labels (parser
);
5113 return c_end_compound_stmt (else_loc
, block
, flag_isoc99
);
5116 /* Parse an if statement (C90 6.6.4, C99 6.8.4).
5119 if ( expression ) statement
5120 if ( expression ) statement else statement
5124 c_parser_if_statement (c_parser
*parser
)
5129 bool first_if
= false;
5130 tree first_body
, second_body
;
5134 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_IF
));
5135 c_parser_consume_token (parser
);
5136 block
= c_begin_compound_stmt (flag_isoc99
);
5137 loc
= c_parser_peek_token (parser
)->location
;
5138 cond
= c_parser_paren_condition (parser
);
5139 in_if_block
= parser
->in_if_block
;
5140 parser
->in_if_block
= true;
5141 first_body
= c_parser_if_body (parser
, &first_if
);
5142 parser
->in_if_block
= in_if_block
;
5143 if (c_parser_next_token_is_keyword (parser
, RID_ELSE
))
5145 c_parser_consume_token (parser
);
5146 second_body
= c_parser_else_body (parser
);
5149 second_body
= NULL_TREE
;
5150 c_finish_if_stmt (loc
, cond
, first_body
, second_body
, first_if
);
5151 if_stmt
= c_end_compound_stmt (loc
, block
, flag_isoc99
);
5153 /* If the if statement contains array notations, then we expand them. */
5154 if (flag_enable_cilkplus
&& contains_array_notation_expr (if_stmt
))
5155 if_stmt
= fix_conditional_array_notations (if_stmt
);
5159 /* Parse a switch statement (C90 6.6.4, C99 6.8.4).
5162 switch (expression) statement
5166 c_parser_switch_statement (c_parser
*parser
)
5169 tree block
, expr
, body
, save_break
;
5170 location_t switch_loc
= c_parser_peek_token (parser
)->location
;
5171 location_t switch_cond_loc
;
5172 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_SWITCH
));
5173 c_parser_consume_token (parser
);
5174 block
= c_begin_compound_stmt (flag_isoc99
);
5175 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
5177 switch_cond_loc
= c_parser_peek_token (parser
)->location
;
5178 ce
= c_parser_expression (parser
);
5179 ce
= convert_lvalue_to_rvalue (switch_cond_loc
, ce
, true, false);
5181 if (flag_enable_cilkplus
&& contains_array_notation_expr (expr
))
5183 error_at (switch_cond_loc
,
5184 "array notations cannot be used as a condition for switch "
5186 expr
= error_mark_node
;
5188 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
5192 switch_cond_loc
= UNKNOWN_LOCATION
;
5193 expr
= error_mark_node
;
5195 c_start_case (switch_loc
, switch_cond_loc
, expr
);
5196 save_break
= c_break_label
;
5197 c_break_label
= NULL_TREE
;
5198 body
= c_parser_c99_block_statement (parser
);
5199 c_finish_case (body
);
5202 location_t here
= c_parser_peek_token (parser
)->location
;
5203 tree t
= build1 (LABEL_EXPR
, void_type_node
, c_break_label
);
5204 SET_EXPR_LOCATION (t
, here
);
5207 c_break_label
= save_break
;
5208 add_stmt (c_end_compound_stmt (switch_loc
, block
, flag_isoc99
));
5211 /* Parse a while statement (C90 6.6.5, C99 6.8.5).
5214 while (expression) statement
5218 c_parser_while_statement (c_parser
*parser
, bool ivdep
)
5220 tree block
, cond
, body
, save_break
, save_cont
;
5222 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_WHILE
));
5223 c_parser_consume_token (parser
);
5224 block
= c_begin_compound_stmt (flag_isoc99
);
5225 loc
= c_parser_peek_token (parser
)->location
;
5226 cond
= c_parser_paren_condition (parser
);
5227 if (flag_enable_cilkplus
&& contains_array_notation_expr (cond
))
5229 error_at (loc
, "array notations cannot be used as a condition for while "
5231 cond
= error_mark_node
;
5234 if (ivdep
&& cond
!= error_mark_node
)
5235 cond
= build2 (ANNOTATE_EXPR
, TREE_TYPE (cond
), cond
,
5236 build_int_cst (integer_type_node
,
5237 annot_expr_ivdep_kind
));
5238 save_break
= c_break_label
;
5239 c_break_label
= NULL_TREE
;
5240 save_cont
= c_cont_label
;
5241 c_cont_label
= NULL_TREE
;
5242 body
= c_parser_c99_block_statement (parser
);
5243 c_finish_loop (loc
, cond
, NULL
, body
, c_break_label
, c_cont_label
, true);
5244 add_stmt (c_end_compound_stmt (loc
, block
, flag_isoc99
));
5245 c_break_label
= save_break
;
5246 c_cont_label
= save_cont
;
5249 /* Parse a do statement (C90 6.6.5, C99 6.8.5).
5252 do statement while ( expression ) ;
5256 c_parser_do_statement (c_parser
*parser
, bool ivdep
)
5258 tree block
, cond
, body
, save_break
, save_cont
, new_break
, new_cont
;
5260 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_DO
));
5261 c_parser_consume_token (parser
);
5262 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
5263 warning_at (c_parser_peek_token (parser
)->location
,
5265 "suggest braces around empty body in %<do%> statement");
5266 block
= c_begin_compound_stmt (flag_isoc99
);
5267 loc
= c_parser_peek_token (parser
)->location
;
5268 save_break
= c_break_label
;
5269 c_break_label
= NULL_TREE
;
5270 save_cont
= c_cont_label
;
5271 c_cont_label
= NULL_TREE
;
5272 body
= c_parser_c99_block_statement (parser
);
5273 c_parser_require_keyword (parser
, RID_WHILE
, "expected %<while%>");
5274 new_break
= c_break_label
;
5275 c_break_label
= save_break
;
5276 new_cont
= c_cont_label
;
5277 c_cont_label
= save_cont
;
5278 cond
= c_parser_paren_condition (parser
);
5279 if (flag_enable_cilkplus
&& contains_array_notation_expr (cond
))
5281 error_at (loc
, "array notations cannot be used as a condition for a "
5282 "do-while statement");
5283 cond
= error_mark_node
;
5285 if (ivdep
&& cond
!= error_mark_node
)
5286 cond
= build2 (ANNOTATE_EXPR
, TREE_TYPE (cond
), cond
,
5287 build_int_cst (integer_type_node
,
5288 annot_expr_ivdep_kind
));
5289 if (!c_parser_require (parser
, CPP_SEMICOLON
, "expected %<;%>"))
5290 c_parser_skip_to_end_of_block_or_statement (parser
);
5291 c_finish_loop (loc
, cond
, NULL
, body
, new_break
, new_cont
, false);
5292 add_stmt (c_end_compound_stmt (loc
, block
, flag_isoc99
));
5295 /* Parse a for statement (C90 6.6.5, C99 6.8.5).
5298 for ( expression[opt] ; expression[opt] ; expression[opt] ) statement
5299 for ( nested-declaration expression[opt] ; expression[opt] ) statement
5301 The form with a declaration is new in C99.
5303 ??? In accordance with the old parser, the declaration may be a
5304 nested function, which is then rejected in check_for_loop_decls,
5305 but does it make any sense for this to be included in the grammar?
5306 Note in particular that the nested function does not include a
5307 trailing ';', whereas the "declaration" production includes one.
5308 Also, can we reject bad declarations earlier and cheaper than
5309 check_for_loop_decls?
5311 In Objective-C, there are two additional variants:
5314 for ( expression in expresssion ) statement
5315 for ( declaration in expression ) statement
5317 This is inconsistent with C, because the second variant is allowed
5318 even if c99 is not enabled.
5320 The rest of the comment documents these Objective-C foreach-statement.
5322 Here is the canonical example of the first variant:
5323 for (object in array) { do something with object }
5324 we call the first expression ("object") the "object_expression" and
5325 the second expression ("array") the "collection_expression".
5326 object_expression must be an lvalue of type "id" (a generic Objective-C
5327 object) because the loop works by assigning to object_expression the
5328 various objects from the collection_expression. collection_expression
5329 must evaluate to something of type "id" which responds to the method
5330 countByEnumeratingWithState:objects:count:.
5332 The canonical example of the second variant is:
5333 for (id object in array) { do something with object }
5334 which is completely equivalent to
5337 for (object in array) { do something with object }
5339 Note that initizializing 'object' in some way (eg, "for ((object =
5340 xxx) in array) { do something with object }") is possibly
5341 technically valid, but completely pointless as 'object' will be
5342 assigned to something else as soon as the loop starts. We should
5343 most likely reject it (TODO).
5345 The beginning of the Objective-C foreach-statement looks exactly
5346 like the beginning of the for-statement, and we can tell it is a
5347 foreach-statement only because the initial declaration or
5348 expression is terminated by 'in' instead of ';'.
5352 c_parser_for_statement (c_parser
*parser
, bool ivdep
)
5354 tree block
, cond
, incr
, save_break
, save_cont
, body
;
5355 /* The following are only used when parsing an ObjC foreach statement. */
5356 tree object_expression
;
5357 /* Silence the bogus uninitialized warning. */
5358 tree collection_expression
= NULL
;
5359 location_t loc
= c_parser_peek_token (parser
)->location
;
5360 location_t for_loc
= c_parser_peek_token (parser
)->location
;
5361 bool is_foreach_statement
= false;
5362 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_FOR
));
5363 c_parser_consume_token (parser
);
5364 /* Open a compound statement in Objective-C as well, just in case this is
5365 as foreach expression. */
5366 block
= c_begin_compound_stmt (flag_isoc99
|| c_dialect_objc ());
5367 cond
= error_mark_node
;
5368 incr
= error_mark_node
;
5369 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
5371 /* Parse the initialization declaration or expression. */
5372 object_expression
= error_mark_node
;
5373 parser
->objc_could_be_foreach_context
= c_dialect_objc ();
5374 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
5376 parser
->objc_could_be_foreach_context
= false;
5377 c_parser_consume_token (parser
);
5378 c_finish_expr_stmt (loc
, NULL_TREE
);
5380 else if (c_parser_next_tokens_start_declaration (parser
))
5382 c_parser_declaration_or_fndef (parser
, true, true, true, true, true,
5383 &object_expression
, vNULL
);
5384 parser
->objc_could_be_foreach_context
= false;
5386 if (c_parser_next_token_is_keyword (parser
, RID_IN
))
5388 c_parser_consume_token (parser
);
5389 is_foreach_statement
= true;
5390 if (check_for_loop_decls (for_loc
, true) == NULL_TREE
)
5391 c_parser_error (parser
, "multiple iterating variables in fast enumeration");
5394 check_for_loop_decls (for_loc
, flag_isoc99
);
5396 else if (c_parser_next_token_is_keyword (parser
, RID_EXTENSION
))
5398 /* __extension__ can start a declaration, but is also an
5399 unary operator that can start an expression. Consume all
5400 but the last of a possible series of __extension__ to
5402 while (c_parser_peek_2nd_token (parser
)->type
== CPP_KEYWORD
5403 && (c_parser_peek_2nd_token (parser
)->keyword
5405 c_parser_consume_token (parser
);
5406 if (c_token_starts_declaration (c_parser_peek_2nd_token (parser
)))
5409 ext
= disable_extension_diagnostics ();
5410 c_parser_consume_token (parser
);
5411 c_parser_declaration_or_fndef (parser
, true, true, true, true,
5412 true, &object_expression
, vNULL
);
5413 parser
->objc_could_be_foreach_context
= false;
5415 restore_extension_diagnostics (ext
);
5416 if (c_parser_next_token_is_keyword (parser
, RID_IN
))
5418 c_parser_consume_token (parser
);
5419 is_foreach_statement
= true;
5420 if (check_for_loop_decls (for_loc
, true) == NULL_TREE
)
5421 c_parser_error (parser
, "multiple iterating variables in fast enumeration");
5424 check_for_loop_decls (for_loc
, flag_isoc99
);
5434 tree init_expression
;
5435 ce
= c_parser_expression (parser
);
5436 init_expression
= ce
.value
;
5437 parser
->objc_could_be_foreach_context
= false;
5438 if (c_parser_next_token_is_keyword (parser
, RID_IN
))
5440 c_parser_consume_token (parser
);
5441 is_foreach_statement
= true;
5442 if (! lvalue_p (init_expression
))
5443 c_parser_error (parser
, "invalid iterating variable in fast enumeration");
5444 object_expression
= c_fully_fold (init_expression
, false, NULL
);
5448 ce
= convert_lvalue_to_rvalue (loc
, ce
, true, false);
5449 init_expression
= ce
.value
;
5450 c_finish_expr_stmt (loc
, init_expression
);
5451 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
5455 /* Parse the loop condition. In the case of a foreach
5456 statement, there is no loop condition. */
5457 gcc_assert (!parser
->objc_could_be_foreach_context
);
5458 if (!is_foreach_statement
)
5460 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
5464 c_parser_error (parser
, "missing loop condition in loop with "
5465 "%<GCC ivdep%> pragma");
5466 cond
= error_mark_node
;
5470 c_parser_consume_token (parser
);
5476 cond
= c_parser_condition (parser
);
5477 if (flag_enable_cilkplus
&& contains_array_notation_expr (cond
))
5479 error_at (loc
, "array notations cannot be used in a "
5480 "condition for a for-loop");
5481 cond
= error_mark_node
;
5483 c_parser_skip_until_found (parser
, CPP_SEMICOLON
,
5486 if (ivdep
&& cond
!= error_mark_node
)
5487 cond
= build2 (ANNOTATE_EXPR
, TREE_TYPE (cond
), cond
,
5488 build_int_cst (integer_type_node
,
5489 annot_expr_ivdep_kind
));
5491 /* Parse the increment expression (the third expression in a
5492 for-statement). In the case of a foreach-statement, this is
5493 the expression that follows the 'in'. */
5494 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
5496 if (is_foreach_statement
)
5498 c_parser_error (parser
, "missing collection in fast enumeration");
5499 collection_expression
= error_mark_node
;
5502 incr
= c_process_expr_stmt (loc
, NULL_TREE
);
5506 if (is_foreach_statement
)
5507 collection_expression
= c_fully_fold (c_parser_expression (parser
).value
,
5511 struct c_expr ce
= c_parser_expression (parser
);
5512 ce
= convert_lvalue_to_rvalue (loc
, ce
, true, false);
5513 incr
= c_process_expr_stmt (loc
, ce
.value
);
5516 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
5518 save_break
= c_break_label
;
5519 c_break_label
= NULL_TREE
;
5520 save_cont
= c_cont_label
;
5521 c_cont_label
= NULL_TREE
;
5522 body
= c_parser_c99_block_statement (parser
);
5523 if (is_foreach_statement
)
5524 objc_finish_foreach_loop (loc
, object_expression
, collection_expression
, body
, c_break_label
, c_cont_label
);
5526 c_finish_loop (loc
, cond
, incr
, body
, c_break_label
, c_cont_label
, true);
5527 add_stmt (c_end_compound_stmt (loc
, block
, flag_isoc99
|| c_dialect_objc ()));
5528 c_break_label
= save_break
;
5529 c_cont_label
= save_cont
;
5532 /* Parse an asm statement, a GNU extension. This is a full-blown asm
5533 statement with inputs, outputs, clobbers, and volatile tag
5537 asm type-qualifier[opt] ( asm-argument ) ;
5538 asm type-qualifier[opt] goto ( asm-goto-argument ) ;
5542 asm-string-literal : asm-operands[opt]
5543 asm-string-literal : asm-operands[opt] : asm-operands[opt]
5544 asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt]
5547 asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \
5550 Qualifiers other than volatile are accepted in the syntax but
5554 c_parser_asm_statement (c_parser
*parser
)
5556 tree quals
, str
, outputs
, inputs
, clobbers
, labels
, ret
;
5557 bool simple
, is_goto
;
5558 location_t asm_loc
= c_parser_peek_token (parser
)->location
;
5559 int section
, nsections
;
5561 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_ASM
));
5562 c_parser_consume_token (parser
);
5563 if (c_parser_next_token_is_keyword (parser
, RID_VOLATILE
))
5565 quals
= c_parser_peek_token (parser
)->value
;
5566 c_parser_consume_token (parser
);
5568 else if (c_parser_next_token_is_keyword (parser
, RID_CONST
)
5569 || c_parser_next_token_is_keyword (parser
, RID_RESTRICT
))
5571 warning_at (c_parser_peek_token (parser
)->location
,
5573 "%E qualifier ignored on asm",
5574 c_parser_peek_token (parser
)->value
);
5576 c_parser_consume_token (parser
);
5582 if (c_parser_next_token_is_keyword (parser
, RID_GOTO
))
5584 c_parser_consume_token (parser
);
5588 /* ??? Follow the C++ parser rather than using the
5589 lex_untranslated_string kludge. */
5590 parser
->lex_untranslated_string
= true;
5593 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
5596 str
= c_parser_asm_string_literal (parser
);
5597 if (str
== NULL_TREE
)
5598 goto error_close_paren
;
5601 outputs
= NULL_TREE
;
5603 clobbers
= NULL_TREE
;
5606 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
) && !is_goto
)
5609 /* Parse each colon-delimited section of operands. */
5610 nsections
= 3 + is_goto
;
5611 for (section
= 0; section
< nsections
; ++section
)
5613 if (!c_parser_require (parser
, CPP_COLON
,
5616 : "expected %<:%> or %<)%>"))
5617 goto error_close_paren
;
5619 /* Once past any colon, we're no longer a simple asm. */
5622 if ((!c_parser_next_token_is (parser
, CPP_COLON
)
5623 && !c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
5628 /* For asm goto, we don't allow output operands, but reserve
5629 the slot for a future extension that does allow them. */
5631 outputs
= c_parser_asm_operands (parser
);
5634 inputs
= c_parser_asm_operands (parser
);
5637 clobbers
= c_parser_asm_clobbers (parser
);
5640 labels
= c_parser_asm_goto_operands (parser
);
5646 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
) && !is_goto
)
5651 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
5653 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
5657 if (!c_parser_require (parser
, CPP_SEMICOLON
, "expected %<;%>"))
5658 c_parser_skip_to_end_of_block_or_statement (parser
);
5660 ret
= build_asm_stmt (quals
, build_asm_expr (asm_loc
, str
, outputs
, inputs
,
5661 clobbers
, labels
, simple
));
5664 parser
->lex_untranslated_string
= false;
5668 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
5672 /* Parse asm operands, a GNU extension.
5676 asm-operands , asm-operand
5679 asm-string-literal ( expression )
5680 [ identifier ] asm-string-literal ( expression )
5684 c_parser_asm_operands (c_parser
*parser
)
5686 tree list
= NULL_TREE
;
5691 if (c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
))
5693 c_parser_consume_token (parser
);
5694 if (c_parser_next_token_is (parser
, CPP_NAME
))
5696 tree id
= c_parser_peek_token (parser
)->value
;
5697 c_parser_consume_token (parser
);
5698 name
= build_string (IDENTIFIER_LENGTH (id
),
5699 IDENTIFIER_POINTER (id
));
5703 c_parser_error (parser
, "expected identifier");
5704 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
5707 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
5712 str
= c_parser_asm_string_literal (parser
);
5713 if (str
== NULL_TREE
)
5715 parser
->lex_untranslated_string
= false;
5716 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
5718 parser
->lex_untranslated_string
= true;
5721 expr
= c_parser_expression (parser
);
5722 mark_exp_read (expr
.value
);
5723 parser
->lex_untranslated_string
= true;
5724 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
5726 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
5729 list
= chainon (list
, build_tree_list (build_tree_list (name
, str
),
5731 if (c_parser_next_token_is (parser
, CPP_COMMA
))
5732 c_parser_consume_token (parser
);
5739 /* Parse asm clobbers, a GNU extension.
5743 asm-clobbers , asm-string-literal
5747 c_parser_asm_clobbers (c_parser
*parser
)
5749 tree list
= NULL_TREE
;
5752 tree str
= c_parser_asm_string_literal (parser
);
5754 list
= tree_cons (NULL_TREE
, str
, list
);
5757 if (c_parser_next_token_is (parser
, CPP_COMMA
))
5758 c_parser_consume_token (parser
);
5765 /* Parse asm goto labels, a GNU extension.
5769 asm-goto-operands , identifier
5773 c_parser_asm_goto_operands (c_parser
*parser
)
5775 tree list
= NULL_TREE
;
5780 if (c_parser_next_token_is (parser
, CPP_NAME
))
5782 c_token
*tok
= c_parser_peek_token (parser
);
5784 label
= lookup_label_for_goto (tok
->location
, name
);
5785 c_parser_consume_token (parser
);
5786 TREE_USED (label
) = 1;
5790 c_parser_error (parser
, "expected identifier");
5794 name
= build_string (IDENTIFIER_LENGTH (name
),
5795 IDENTIFIER_POINTER (name
));
5796 list
= tree_cons (name
, label
, list
);
5797 if (c_parser_next_token_is (parser
, CPP_COMMA
))
5798 c_parser_consume_token (parser
);
5800 return nreverse (list
);
5804 /* Parse an expression other than a compound expression; that is, an
5805 assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not
5806 NULL then it is an Objective-C message expression which is the
5807 primary-expression starting the expression as an initializer.
5809 assignment-expression:
5810 conditional-expression
5811 unary-expression assignment-operator assignment-expression
5813 assignment-operator: one of
5814 = *= /= %= += -= <<= >>= &= ^= |=
5816 In GNU C we accept any conditional expression on the LHS and
5817 diagnose the invalid lvalue rather than producing a syntax
5820 static struct c_expr
5821 c_parser_expr_no_commas (c_parser
*parser
, struct c_expr
*after
,
5822 tree omp_atomic_lhs
)
5824 struct c_expr lhs
, rhs
, ret
;
5825 enum tree_code code
;
5826 location_t op_location
, exp_location
;
5827 gcc_assert (!after
|| c_dialect_objc ());
5828 lhs
= c_parser_conditional_expression (parser
, after
, omp_atomic_lhs
);
5829 op_location
= c_parser_peek_token (parser
)->location
;
5830 switch (c_parser_peek_token (parser
)->type
)
5839 code
= TRUNC_DIV_EXPR
;
5842 code
= TRUNC_MOD_EXPR
;
5857 code
= BIT_AND_EXPR
;
5860 code
= BIT_XOR_EXPR
;
5863 code
= BIT_IOR_EXPR
;
5868 c_parser_consume_token (parser
);
5869 exp_location
= c_parser_peek_token (parser
)->location
;
5870 rhs
= c_parser_expr_no_commas (parser
, NULL
);
5871 rhs
= convert_lvalue_to_rvalue (exp_location
, rhs
, true, true);
5873 ret
.value
= build_modify_expr (op_location
, lhs
.value
, lhs
.original_type
,
5874 code
, exp_location
, rhs
.value
,
5876 if (code
== NOP_EXPR
)
5877 ret
.original_code
= MODIFY_EXPR
;
5880 TREE_NO_WARNING (ret
.value
) = 1;
5881 ret
.original_code
= ERROR_MARK
;
5883 ret
.original_type
= NULL
;
5887 /* Parse a conditional expression (C90 6.3.15, C99 6.5.15). If AFTER
5888 is not NULL then it is an Objective-C message expression which is
5889 the primary-expression starting the expression as an initializer.
5891 conditional-expression:
5892 logical-OR-expression
5893 logical-OR-expression ? expression : conditional-expression
5897 conditional-expression:
5898 logical-OR-expression ? : conditional-expression
5901 static struct c_expr
5902 c_parser_conditional_expression (c_parser
*parser
, struct c_expr
*after
,
5903 tree omp_atomic_lhs
)
5905 struct c_expr cond
, exp1
, exp2
, ret
;
5906 location_t cond_loc
, colon_loc
, middle_loc
;
5908 gcc_assert (!after
|| c_dialect_objc ());
5910 cond
= c_parser_binary_expression (parser
, after
, omp_atomic_lhs
);
5912 if (c_parser_next_token_is_not (parser
, CPP_QUERY
))
5914 cond_loc
= c_parser_peek_token (parser
)->location
;
5915 cond
= convert_lvalue_to_rvalue (cond_loc
, cond
, true, true);
5916 c_parser_consume_token (parser
);
5917 if (c_parser_next_token_is (parser
, CPP_COLON
))
5919 tree eptype
= NULL_TREE
;
5921 middle_loc
= c_parser_peek_token (parser
)->location
;
5922 pedwarn (middle_loc
, OPT_Wpedantic
,
5923 "ISO C forbids omitting the middle term of a ?: expression");
5924 warn_for_omitted_condop (middle_loc
, cond
.value
);
5925 if (TREE_CODE (cond
.value
) == EXCESS_PRECISION_EXPR
)
5927 eptype
= TREE_TYPE (cond
.value
);
5928 cond
.value
= TREE_OPERAND (cond
.value
, 0);
5930 /* Make sure first operand is calculated only once. */
5931 exp1
.value
= c_save_expr (default_conversion (cond
.value
));
5933 exp1
.value
= build1 (EXCESS_PRECISION_EXPR
, eptype
, exp1
.value
);
5934 exp1
.original_type
= NULL
;
5935 cond
.value
= c_objc_common_truthvalue_conversion (cond_loc
, exp1
.value
);
5936 c_inhibit_evaluation_warnings
+= cond
.value
== truthvalue_true_node
;
5941 = c_objc_common_truthvalue_conversion
5942 (cond_loc
, default_conversion (cond
.value
));
5943 c_inhibit_evaluation_warnings
+= cond
.value
== truthvalue_false_node
;
5944 exp1
= c_parser_expression_conv (parser
);
5945 mark_exp_read (exp1
.value
);
5946 c_inhibit_evaluation_warnings
+=
5947 ((cond
.value
== truthvalue_true_node
)
5948 - (cond
.value
== truthvalue_false_node
));
5951 colon_loc
= c_parser_peek_token (parser
)->location
;
5952 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
5954 c_inhibit_evaluation_warnings
-= cond
.value
== truthvalue_true_node
;
5955 ret
.value
= error_mark_node
;
5956 ret
.original_code
= ERROR_MARK
;
5957 ret
.original_type
= NULL
;
5961 location_t exp2_loc
= c_parser_peek_token (parser
)->location
;
5962 exp2
= c_parser_conditional_expression (parser
, NULL
, NULL_TREE
);
5963 exp2
= convert_lvalue_to_rvalue (exp2_loc
, exp2
, true, true);
5965 c_inhibit_evaluation_warnings
-= cond
.value
== truthvalue_true_node
;
5966 ret
.value
= build_conditional_expr (colon_loc
, cond
.value
,
5967 cond
.original_code
== C_MAYBE_CONST_EXPR
,
5968 exp1
.value
, exp1
.original_type
,
5969 exp2
.value
, exp2
.original_type
);
5970 ret
.original_code
= ERROR_MARK
;
5971 if (exp1
.value
== error_mark_node
|| exp2
.value
== error_mark_node
)
5972 ret
.original_type
= NULL
;
5977 /* If both sides are enum type, the default conversion will have
5978 made the type of the result be an integer type. We want to
5979 remember the enum types we started with. */
5980 t1
= exp1
.original_type
? exp1
.original_type
: TREE_TYPE (exp1
.value
);
5981 t2
= exp2
.original_type
? exp2
.original_type
: TREE_TYPE (exp2
.value
);
5982 ret
.original_type
= ((t1
!= error_mark_node
5983 && t2
!= error_mark_node
5984 && (TYPE_MAIN_VARIANT (t1
)
5985 == TYPE_MAIN_VARIANT (t2
)))
5992 /* Parse a binary expression; that is, a logical-OR-expression (C90
5993 6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is
5994 an Objective-C message expression which is the primary-expression
5995 starting the expression as an initializer.
5997 OMP_ATOMIC_LHS is NULL, unless parsing OpenMP #pragma omp atomic,
5998 when it should be the unfolded lhs. In a valid OpenMP source,
5999 one of the operands of the toplevel binary expression must be equal
6000 to it. In that case, just return a build2 created binary operation
6001 rather than result of parser_build_binary_op.
6003 multiplicative-expression:
6005 multiplicative-expression * cast-expression
6006 multiplicative-expression / cast-expression
6007 multiplicative-expression % cast-expression
6009 additive-expression:
6010 multiplicative-expression
6011 additive-expression + multiplicative-expression
6012 additive-expression - multiplicative-expression
6016 shift-expression << additive-expression
6017 shift-expression >> additive-expression
6019 relational-expression:
6021 relational-expression < shift-expression
6022 relational-expression > shift-expression
6023 relational-expression <= shift-expression
6024 relational-expression >= shift-expression
6026 equality-expression:
6027 relational-expression
6028 equality-expression == relational-expression
6029 equality-expression != relational-expression
6033 AND-expression & equality-expression
6035 exclusive-OR-expression:
6037 exclusive-OR-expression ^ AND-expression
6039 inclusive-OR-expression:
6040 exclusive-OR-expression
6041 inclusive-OR-expression | exclusive-OR-expression
6043 logical-AND-expression:
6044 inclusive-OR-expression
6045 logical-AND-expression && inclusive-OR-expression
6047 logical-OR-expression:
6048 logical-AND-expression
6049 logical-OR-expression || logical-AND-expression
6052 static struct c_expr
6053 c_parser_binary_expression (c_parser
*parser
, struct c_expr
*after
,
6054 tree omp_atomic_lhs
)
6056 /* A binary expression is parsed using operator-precedence parsing,
6057 with the operands being cast expressions. All the binary
6058 operators are left-associative. Thus a binary expression is of
6061 E0 op1 E1 op2 E2 ...
6063 which we represent on a stack. On the stack, the precedence
6064 levels are strictly increasing. When a new operator is
6065 encountered of higher precedence than that at the top of the
6066 stack, it is pushed; its LHS is the top expression, and its RHS
6067 is everything parsed until it is popped. When a new operator is
6068 encountered with precedence less than or equal to that at the top
6069 of the stack, triples E[i-1] op[i] E[i] are popped and replaced
6070 by the result of the operation until the operator at the top of
6071 the stack has lower precedence than the new operator or there is
6072 only one element on the stack; then the top expression is the LHS
6073 of the new operator. In the case of logical AND and OR
6074 expressions, we also need to adjust c_inhibit_evaluation_warnings
6075 as appropriate when the operators are pushed and popped. */
6078 /* The expression at this stack level. */
6080 /* The precedence of the operator on its left, PREC_NONE at the
6081 bottom of the stack. */
6082 enum c_parser_prec prec
;
6083 /* The operation on its left. */
6085 /* The source location of this operation. */
6089 /* Location of the binary operator. */
6090 location_t binary_loc
= UNKNOWN_LOCATION
; /* Quiet warning. */
6093 switch (stack[sp].op) \
6095 case TRUTH_ANDIF_EXPR: \
6096 c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \
6097 == truthvalue_false_node); \
6099 case TRUTH_ORIF_EXPR: \
6100 c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \
6101 == truthvalue_true_node); \
6106 stack[sp - 1].expr \
6107 = convert_lvalue_to_rvalue (stack[sp - 1].loc, \
6108 stack[sp - 1].expr, true, true); \
6110 = convert_lvalue_to_rvalue (stack[sp].loc, \
6111 stack[sp].expr, true, true); \
6112 if (__builtin_expect (omp_atomic_lhs != NULL_TREE, 0) && sp == 1 \
6113 && c_parser_peek_token (parser)->type == CPP_SEMICOLON \
6114 && ((1 << stack[sp].prec) \
6115 & (1 << (PREC_BITOR | PREC_BITXOR | PREC_BITAND | PREC_SHIFT \
6116 | PREC_ADD | PREC_MULT))) \
6117 && stack[sp].op != TRUNC_MOD_EXPR \
6118 && stack[0].expr.value != error_mark_node \
6119 && stack[1].expr.value != error_mark_node \
6120 && (c_tree_equal (stack[0].expr.value, omp_atomic_lhs) \
6121 || c_tree_equal (stack[1].expr.value, omp_atomic_lhs))) \
6122 stack[0].expr.value \
6123 = build2 (stack[1].op, TREE_TYPE (stack[0].expr.value), \
6124 stack[0].expr.value, stack[1].expr.value); \
6126 stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \
6128 stack[sp - 1].expr, \
6132 gcc_assert (!after
|| c_dialect_objc ());
6133 stack
[0].loc
= c_parser_peek_token (parser
)->location
;
6134 stack
[0].expr
= c_parser_cast_expression (parser
, after
);
6135 stack
[0].prec
= PREC_NONE
;
6139 enum c_parser_prec oprec
;
6140 enum tree_code ocode
;
6143 switch (c_parser_peek_token (parser
)->type
)
6151 ocode
= TRUNC_DIV_EXPR
;
6155 ocode
= TRUNC_MOD_EXPR
;
6167 ocode
= LSHIFT_EXPR
;
6171 ocode
= RSHIFT_EXPR
;
6185 case CPP_GREATER_EQ
:
6198 oprec
= PREC_BITAND
;
6199 ocode
= BIT_AND_EXPR
;
6202 oprec
= PREC_BITXOR
;
6203 ocode
= BIT_XOR_EXPR
;
6207 ocode
= BIT_IOR_EXPR
;
6210 oprec
= PREC_LOGAND
;
6211 ocode
= TRUTH_ANDIF_EXPR
;
6215 ocode
= TRUTH_ORIF_EXPR
;
6218 /* Not a binary operator, so end of the binary
6222 binary_loc
= c_parser_peek_token (parser
)->location
;
6223 while (oprec
<= stack
[sp
].prec
)
6225 c_parser_consume_token (parser
);
6228 case TRUTH_ANDIF_EXPR
:
6230 = convert_lvalue_to_rvalue (stack
[sp
].loc
,
6231 stack
[sp
].expr
, true, true);
6232 stack
[sp
].expr
.value
= c_objc_common_truthvalue_conversion
6233 (stack
[sp
].loc
, default_conversion (stack
[sp
].expr
.value
));
6234 c_inhibit_evaluation_warnings
+= (stack
[sp
].expr
.value
6235 == truthvalue_false_node
);
6237 case TRUTH_ORIF_EXPR
:
6239 = convert_lvalue_to_rvalue (stack
[sp
].loc
,
6240 stack
[sp
].expr
, true, true);
6241 stack
[sp
].expr
.value
= c_objc_common_truthvalue_conversion
6242 (stack
[sp
].loc
, default_conversion (stack
[sp
].expr
.value
));
6243 c_inhibit_evaluation_warnings
+= (stack
[sp
].expr
.value
6244 == truthvalue_true_node
);
6250 stack
[sp
].loc
= binary_loc
;
6251 stack
[sp
].expr
= c_parser_cast_expression (parser
, NULL
);
6252 stack
[sp
].prec
= oprec
;
6253 stack
[sp
].op
= ocode
;
6254 stack
[sp
].loc
= binary_loc
;
6259 return stack
[0].expr
;
6263 /* Parse a cast expression (C90 6.3.4, C99 6.5.4). If AFTER is not
6264 NULL then it is an Objective-C message expression which is the
6265 primary-expression starting the expression as an initializer.
6269 ( type-name ) unary-expression
6272 static struct c_expr
6273 c_parser_cast_expression (c_parser
*parser
, struct c_expr
*after
)
6275 location_t cast_loc
= c_parser_peek_token (parser
)->location
;
6276 gcc_assert (!after
|| c_dialect_objc ());
6278 return c_parser_postfix_expression_after_primary (parser
,
6280 /* If the expression begins with a parenthesized type name, it may
6281 be either a cast or a compound literal; we need to see whether
6282 the next character is '{' to tell the difference. If not, it is
6283 an unary expression. Full detection of unknown typenames here
6284 would require a 3-token lookahead. */
6285 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
)
6286 && c_token_starts_typename (c_parser_peek_2nd_token (parser
)))
6288 struct c_type_name
*type_name
;
6291 c_parser_consume_token (parser
);
6292 type_name
= c_parser_type_name (parser
);
6293 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
6294 if (type_name
== NULL
)
6296 ret
.value
= error_mark_node
;
6297 ret
.original_code
= ERROR_MARK
;
6298 ret
.original_type
= NULL
;
6302 /* Save casted types in the function's used types hash table. */
6303 used_types_insert (type_name
->specs
->type
);
6305 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
6306 return c_parser_postfix_expression_after_paren_type (parser
, type_name
,
6309 location_t expr_loc
= c_parser_peek_token (parser
)->location
;
6310 expr
= c_parser_cast_expression (parser
, NULL
);
6311 expr
= convert_lvalue_to_rvalue (expr_loc
, expr
, true, true);
6313 ret
.value
= c_cast_expr (cast_loc
, type_name
, expr
.value
);
6314 ret
.original_code
= ERROR_MARK
;
6315 ret
.original_type
= NULL
;
6319 return c_parser_unary_expression (parser
);
6322 /* Parse an unary expression (C90 6.3.3, C99 6.5.3).
6328 unary-operator cast-expression
6329 sizeof unary-expression
6330 sizeof ( type-name )
6332 unary-operator: one of
6338 __alignof__ unary-expression
6339 __alignof__ ( type-name )
6342 (C11 permits _Alignof with type names only.)
6344 unary-operator: one of
6345 __extension__ __real__ __imag__
6347 Transactional Memory:
6350 transaction-expression
6352 In addition, the GNU syntax treats ++ and -- as unary operators, so
6353 they may be applied to cast expressions with errors for non-lvalues
6356 static struct c_expr
6357 c_parser_unary_expression (c_parser
*parser
)
6360 struct c_expr ret
, op
;
6361 location_t op_loc
= c_parser_peek_token (parser
)->location
;
6363 ret
.original_code
= ERROR_MARK
;
6364 ret
.original_type
= NULL
;
6365 switch (c_parser_peek_token (parser
)->type
)
6368 c_parser_consume_token (parser
);
6369 exp_loc
= c_parser_peek_token (parser
)->location
;
6370 op
= c_parser_cast_expression (parser
, NULL
);
6372 /* If there is array notations in op, we expand them. */
6373 if (flag_enable_cilkplus
&& TREE_CODE (op
.value
) == ARRAY_NOTATION_REF
)
6374 return fix_array_notation_expr (exp_loc
, PREINCREMENT_EXPR
, op
);
6377 op
= default_function_array_read_conversion (exp_loc
, op
);
6378 return parser_build_unary_op (op_loc
, PREINCREMENT_EXPR
, op
);
6380 case CPP_MINUS_MINUS
:
6381 c_parser_consume_token (parser
);
6382 exp_loc
= c_parser_peek_token (parser
)->location
;
6383 op
= c_parser_cast_expression (parser
, NULL
);
6385 /* If there is array notations in op, we expand them. */
6386 if (flag_enable_cilkplus
&& TREE_CODE (op
.value
) == ARRAY_NOTATION_REF
)
6387 return fix_array_notation_expr (exp_loc
, PREDECREMENT_EXPR
, op
);
6390 op
= default_function_array_read_conversion (exp_loc
, op
);
6391 return parser_build_unary_op (op_loc
, PREDECREMENT_EXPR
, op
);
6394 c_parser_consume_token (parser
);
6395 op
= c_parser_cast_expression (parser
, NULL
);
6396 mark_exp_read (op
.value
);
6397 return parser_build_unary_op (op_loc
, ADDR_EXPR
, op
);
6399 c_parser_consume_token (parser
);
6400 exp_loc
= c_parser_peek_token (parser
)->location
;
6401 op
= c_parser_cast_expression (parser
, NULL
);
6402 op
= convert_lvalue_to_rvalue (exp_loc
, op
, true, true);
6403 ret
.value
= build_indirect_ref (op_loc
, op
.value
, RO_UNARY_STAR
);
6406 if (!c_dialect_objc () && !in_system_header_at (input_location
))
6409 "traditional C rejects the unary plus operator");
6410 c_parser_consume_token (parser
);
6411 exp_loc
= c_parser_peek_token (parser
)->location
;
6412 op
= c_parser_cast_expression (parser
, NULL
);
6413 op
= convert_lvalue_to_rvalue (exp_loc
, op
, true, true);
6414 return parser_build_unary_op (op_loc
, CONVERT_EXPR
, op
);
6416 c_parser_consume_token (parser
);
6417 exp_loc
= c_parser_peek_token (parser
)->location
;
6418 op
= c_parser_cast_expression (parser
, NULL
);
6419 op
= convert_lvalue_to_rvalue (exp_loc
, op
, true, true);
6420 return parser_build_unary_op (op_loc
, NEGATE_EXPR
, op
);
6422 c_parser_consume_token (parser
);
6423 exp_loc
= c_parser_peek_token (parser
)->location
;
6424 op
= c_parser_cast_expression (parser
, NULL
);
6425 op
= convert_lvalue_to_rvalue (exp_loc
, op
, true, true);
6426 return parser_build_unary_op (op_loc
, BIT_NOT_EXPR
, op
);
6428 c_parser_consume_token (parser
);
6429 exp_loc
= c_parser_peek_token (parser
)->location
;
6430 op
= c_parser_cast_expression (parser
, NULL
);
6431 op
= convert_lvalue_to_rvalue (exp_loc
, op
, true, true);
6432 return parser_build_unary_op (op_loc
, TRUTH_NOT_EXPR
, op
);
6434 /* Refer to the address of a label as a pointer. */
6435 c_parser_consume_token (parser
);
6436 if (c_parser_next_token_is (parser
, CPP_NAME
))
6438 ret
.value
= finish_label_address_expr
6439 (c_parser_peek_token (parser
)->value
, op_loc
);
6440 c_parser_consume_token (parser
);
6444 c_parser_error (parser
, "expected identifier");
6445 ret
.value
= error_mark_node
;
6449 switch (c_parser_peek_token (parser
)->keyword
)
6452 return c_parser_sizeof_expression (parser
);
6454 return c_parser_alignof_expression (parser
);
6456 c_parser_consume_token (parser
);
6457 ext
= disable_extension_diagnostics ();
6458 ret
= c_parser_cast_expression (parser
, NULL
);
6459 restore_extension_diagnostics (ext
);
6462 c_parser_consume_token (parser
);
6463 exp_loc
= c_parser_peek_token (parser
)->location
;
6464 op
= c_parser_cast_expression (parser
, NULL
);
6465 op
= default_function_array_conversion (exp_loc
, op
);
6466 return parser_build_unary_op (op_loc
, REALPART_EXPR
, op
);
6468 c_parser_consume_token (parser
);
6469 exp_loc
= c_parser_peek_token (parser
)->location
;
6470 op
= c_parser_cast_expression (parser
, NULL
);
6471 op
= default_function_array_conversion (exp_loc
, op
);
6472 return parser_build_unary_op (op_loc
, IMAGPART_EXPR
, op
);
6473 case RID_TRANSACTION_ATOMIC
:
6474 case RID_TRANSACTION_RELAXED
:
6475 return c_parser_transaction_expression (parser
,
6476 c_parser_peek_token (parser
)->keyword
);
6478 return c_parser_postfix_expression (parser
);
6481 return c_parser_postfix_expression (parser
);
6485 /* Parse a sizeof expression. */
6487 static struct c_expr
6488 c_parser_sizeof_expression (c_parser
*parser
)
6491 location_t expr_loc
;
6492 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_SIZEOF
));
6493 c_parser_consume_token (parser
);
6494 c_inhibit_evaluation_warnings
++;
6496 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
)
6497 && c_token_starts_typename (c_parser_peek_2nd_token (parser
)))
6499 /* Either sizeof ( type-name ) or sizeof unary-expression
6500 starting with a compound literal. */
6501 struct c_type_name
*type_name
;
6502 c_parser_consume_token (parser
);
6503 expr_loc
= c_parser_peek_token (parser
)->location
;
6504 type_name
= c_parser_type_name (parser
);
6505 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
6506 if (type_name
== NULL
)
6509 c_inhibit_evaluation_warnings
--;
6511 ret
.value
= error_mark_node
;
6512 ret
.original_code
= ERROR_MARK
;
6513 ret
.original_type
= NULL
;
6516 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
6518 expr
= c_parser_postfix_expression_after_paren_type (parser
,
6523 /* sizeof ( type-name ). */
6524 c_inhibit_evaluation_warnings
--;
6526 return c_expr_sizeof_type (expr_loc
, type_name
);
6530 expr_loc
= c_parser_peek_token (parser
)->location
;
6531 expr
= c_parser_unary_expression (parser
);
6533 c_inhibit_evaluation_warnings
--;
6535 mark_exp_read (expr
.value
);
6536 if (TREE_CODE (expr
.value
) == COMPONENT_REF
6537 && DECL_C_BIT_FIELD (TREE_OPERAND (expr
.value
, 1)))
6538 error_at (expr_loc
, "%<sizeof%> applied to a bit-field");
6539 return c_expr_sizeof_expr (expr_loc
, expr
);
6543 /* Parse an alignof expression. */
6545 static struct c_expr
6546 c_parser_alignof_expression (c_parser
*parser
)
6549 location_t loc
= c_parser_peek_token (parser
)->location
;
6550 tree alignof_spelling
= c_parser_peek_token (parser
)->value
;
6551 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_ALIGNOF
));
6552 bool is_c11_alignof
= strcmp (IDENTIFIER_POINTER (alignof_spelling
),
6554 /* A diagnostic is not required for the use of this identifier in
6555 the implementation namespace; only diagnose it for the C11
6556 spelling because of existing code using the other spellings. */
6557 if (!flag_isoc11
&& is_c11_alignof
)
6560 pedwarn (loc
, OPT_Wpedantic
, "ISO C99 does not support %qE",
6563 pedwarn (loc
, OPT_Wpedantic
, "ISO C90 does not support %qE",
6566 c_parser_consume_token (parser
);
6567 c_inhibit_evaluation_warnings
++;
6569 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
)
6570 && c_token_starts_typename (c_parser_peek_2nd_token (parser
)))
6572 /* Either __alignof__ ( type-name ) or __alignof__
6573 unary-expression starting with a compound literal. */
6575 struct c_type_name
*type_name
;
6577 c_parser_consume_token (parser
);
6578 loc
= c_parser_peek_token (parser
)->location
;
6579 type_name
= c_parser_type_name (parser
);
6580 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
6581 if (type_name
== NULL
)
6584 c_inhibit_evaluation_warnings
--;
6586 ret
.value
= error_mark_node
;
6587 ret
.original_code
= ERROR_MARK
;
6588 ret
.original_type
= NULL
;
6591 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
6593 expr
= c_parser_postfix_expression_after_paren_type (parser
,
6598 /* alignof ( type-name ). */
6599 c_inhibit_evaluation_warnings
--;
6601 ret
.value
= c_sizeof_or_alignof_type (loc
, groktypename (type_name
,
6603 false, is_c11_alignof
, 1);
6604 ret
.original_code
= ERROR_MARK
;
6605 ret
.original_type
= NULL
;
6611 expr
= c_parser_unary_expression (parser
);
6613 mark_exp_read (expr
.value
);
6614 c_inhibit_evaluation_warnings
--;
6616 pedwarn (loc
, OPT_Wpedantic
, "ISO C does not allow %<%E (expression)%>",
6618 ret
.value
= c_alignof_expr (loc
, expr
.value
);
6619 ret
.original_code
= ERROR_MARK
;
6620 ret
.original_type
= NULL
;
6625 /* Helper function to read arguments of builtins which are interfaces
6626 for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and
6627 others. The name of the builtin is passed using BNAME parameter.
6628 Function returns true if there were no errors while parsing and
6629 stores the arguments in CEXPR_LIST. */
6631 c_parser_get_builtin_args (c_parser
*parser
, const char *bname
,
6632 vec
<c_expr_t
, va_gc
> **ret_cexpr_list
,
6635 location_t loc
= c_parser_peek_token (parser
)->location
;
6636 vec
<c_expr_t
, va_gc
> *cexpr_list
;
6638 bool saved_force_folding_builtin_constant_p
;
6640 *ret_cexpr_list
= NULL
;
6641 if (c_parser_next_token_is_not (parser
, CPP_OPEN_PAREN
))
6643 error_at (loc
, "cannot take address of %qs", bname
);
6647 c_parser_consume_token (parser
);
6649 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
6651 c_parser_consume_token (parser
);
6655 saved_force_folding_builtin_constant_p
6656 = force_folding_builtin_constant_p
;
6657 force_folding_builtin_constant_p
|= choose_expr_p
;
6658 expr
= c_parser_expr_no_commas (parser
, NULL
);
6659 force_folding_builtin_constant_p
6660 = saved_force_folding_builtin_constant_p
;
6661 vec_alloc (cexpr_list
, 1);
6662 C_EXPR_APPEND (cexpr_list
, expr
);
6663 while (c_parser_next_token_is (parser
, CPP_COMMA
))
6665 c_parser_consume_token (parser
);
6666 expr
= c_parser_expr_no_commas (parser
, NULL
);
6667 C_EXPR_APPEND (cexpr_list
, expr
);
6670 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
6673 *ret_cexpr_list
= cexpr_list
;
6677 /* This represents a single generic-association. */
6679 struct c_generic_association
6681 /* The location of the starting token of the type. */
6682 location_t type_location
;
6683 /* The association's type, or NULL_TREE for 'default'. */
6685 /* The association's expression. */
6686 struct c_expr expression
;
6689 /* Parse a generic-selection. (C11 6.5.1.1).
6692 _Generic ( assignment-expression , generic-assoc-list )
6696 generic-assoc-list , generic-association
6698 generic-association:
6699 type-name : assignment-expression
6700 default : assignment-expression
6703 static struct c_expr
6704 c_parser_generic_selection (c_parser
*parser
)
6706 vec
<c_generic_association
> associations
= vNULL
;
6707 struct c_expr selector
, error_expr
;
6709 struct c_generic_association matched_assoc
;
6710 bool match_found
= false;
6711 location_t generic_loc
, selector_loc
;
6713 error_expr
.original_code
= ERROR_MARK
;
6714 error_expr
.original_type
= NULL
;
6715 error_expr
.value
= error_mark_node
;
6716 matched_assoc
.type_location
= UNKNOWN_LOCATION
;
6717 matched_assoc
.type
= NULL_TREE
;
6718 matched_assoc
.expression
= error_expr
;
6720 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_GENERIC
));
6721 generic_loc
= c_parser_peek_token (parser
)->location
;
6722 c_parser_consume_token (parser
);
6726 pedwarn (generic_loc
, OPT_Wpedantic
,
6727 "ISO C99 does not support %<_Generic%>");
6729 pedwarn (generic_loc
, OPT_Wpedantic
,
6730 "ISO C90 does not support %<_Generic%>");
6733 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
6736 c_inhibit_evaluation_warnings
++;
6737 selector_loc
= c_parser_peek_token (parser
)->location
;
6738 selector
= c_parser_expr_no_commas (parser
, NULL
);
6739 selector
= default_function_array_conversion (selector_loc
, selector
);
6740 c_inhibit_evaluation_warnings
--;
6742 if (selector
.value
== error_mark_node
)
6744 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6747 selector_type
= TREE_TYPE (selector
.value
);
6748 /* In ISO C terms, rvalues (including the controlling expression of
6749 _Generic) do not have qualified types. */
6750 if (TREE_CODE (selector_type
) != ARRAY_TYPE
)
6751 selector_type
= TYPE_MAIN_VARIANT (selector_type
);
6752 /* In ISO C terms, _Noreturn is not part of the type of expressions
6753 such as &abort, but in GCC it is represented internally as a type
6755 if (FUNCTION_POINTER_TYPE_P (selector_type
)
6756 && TYPE_QUALS (TREE_TYPE (selector_type
)) != TYPE_UNQUALIFIED
)
6758 = build_pointer_type (TYPE_MAIN_VARIANT (TREE_TYPE (selector_type
)));
6760 if (!c_parser_require (parser
, CPP_COMMA
, "expected %<,%>"))
6762 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6768 struct c_generic_association assoc
, *iter
;
6770 c_token
*token
= c_parser_peek_token (parser
);
6772 assoc
.type_location
= token
->location
;
6773 if (token
->type
== CPP_KEYWORD
&& token
->keyword
== RID_DEFAULT
)
6775 c_parser_consume_token (parser
);
6776 assoc
.type
= NULL_TREE
;
6780 struct c_type_name
*type_name
;
6782 type_name
= c_parser_type_name (parser
);
6783 if (type_name
== NULL
)
6785 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6788 assoc
.type
= groktypename (type_name
, NULL
, NULL
);
6789 if (assoc
.type
== error_mark_node
)
6791 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6795 if (TREE_CODE (assoc
.type
) == FUNCTION_TYPE
)
6796 error_at (assoc
.type_location
,
6797 "%<_Generic%> association has function type");
6798 else if (!COMPLETE_TYPE_P (assoc
.type
))
6799 error_at (assoc
.type_location
,
6800 "%<_Generic%> association has incomplete type");
6802 if (variably_modified_type_p (assoc
.type
, NULL_TREE
))
6803 error_at (assoc
.type_location
,
6804 "%<_Generic%> association has "
6805 "variable length type");
6808 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
6810 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6814 assoc
.expression
= c_parser_expr_no_commas (parser
, NULL
);
6815 if (assoc
.expression
.value
== error_mark_node
)
6817 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6821 for (ix
= 0; associations
.iterate (ix
, &iter
); ++ix
)
6823 if (assoc
.type
== NULL_TREE
)
6825 if (iter
->type
== NULL_TREE
)
6827 error_at (assoc
.type_location
,
6828 "duplicate %<default%> case in %<_Generic%>");
6829 inform (iter
->type_location
, "original %<default%> is here");
6832 else if (iter
->type
!= NULL_TREE
)
6834 if (comptypes (assoc
.type
, iter
->type
))
6836 error_at (assoc
.type_location
,
6837 "%<_Generic%> specifies two compatible types");
6838 inform (iter
->type_location
, "compatible type is here");
6843 if (assoc
.type
== NULL_TREE
)
6847 matched_assoc
= assoc
;
6851 else if (comptypes (assoc
.type
, selector_type
))
6853 if (!match_found
|| matched_assoc
.type
== NULL_TREE
)
6855 matched_assoc
= assoc
;
6860 error_at (assoc
.type_location
,
6861 "%<_Generic> selector matches multiple associations");
6862 inform (matched_assoc
.type_location
,
6863 "other match is here");
6867 associations
.safe_push (assoc
);
6869 if (c_parser_peek_token (parser
)->type
!= CPP_COMMA
)
6871 c_parser_consume_token (parser
);
6874 associations
.release ();
6876 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
6878 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
6884 error_at (selector_loc
, "%<_Generic%> selector of type %qT is not "
6885 "compatible with any association",
6890 return matched_assoc
.expression
;
6893 associations
.release ();
6897 /* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2).
6901 postfix-expression [ expression ]
6902 postfix-expression ( argument-expression-list[opt] )
6903 postfix-expression . identifier
6904 postfix-expression -> identifier
6905 postfix-expression ++
6906 postfix-expression --
6907 ( type-name ) { initializer-list }
6908 ( type-name ) { initializer-list , }
6910 argument-expression-list:
6912 argument-expression-list , argument-expression
6925 (treated as a keyword in GNU C)
6928 ( compound-statement )
6929 __builtin_va_arg ( assignment-expression , type-name )
6930 __builtin_offsetof ( type-name , offsetof-member-designator )
6931 __builtin_choose_expr ( assignment-expression ,
6932 assignment-expression ,
6933 assignment-expression )
6934 __builtin_types_compatible_p ( type-name , type-name )
6935 __builtin_complex ( assignment-expression , assignment-expression )
6936 __builtin_shuffle ( assignment-expression , assignment-expression )
6937 __builtin_shuffle ( assignment-expression ,
6938 assignment-expression ,
6939 assignment-expression, )
6941 offsetof-member-designator:
6943 offsetof-member-designator . identifier
6944 offsetof-member-designator [ expression ]
6949 [ objc-receiver objc-message-args ]
6950 @selector ( objc-selector-arg )
6951 @protocol ( identifier )
6952 @encode ( type-name )
6954 Classname . identifier
6957 static struct c_expr
6958 c_parser_postfix_expression (c_parser
*parser
)
6960 struct c_expr expr
, e1
;
6961 struct c_type_name
*t1
, *t2
;
6962 location_t loc
= c_parser_peek_token (parser
)->location
;;
6963 expr
.original_code
= ERROR_MARK
;
6964 expr
.original_type
= NULL
;
6965 switch (c_parser_peek_token (parser
)->type
)
6968 expr
.value
= c_parser_peek_token (parser
)->value
;
6969 loc
= c_parser_peek_token (parser
)->location
;
6970 c_parser_consume_token (parser
);
6971 if (TREE_CODE (expr
.value
) == FIXED_CST
6972 && !targetm
.fixed_point_supported_p ())
6974 error_at (loc
, "fixed-point types not supported for this target");
6975 expr
.value
= error_mark_node
;
6982 expr
.value
= c_parser_peek_token (parser
)->value
;
6983 c_parser_consume_token (parser
);
6989 case CPP_UTF8STRING
:
6990 expr
.value
= c_parser_peek_token (parser
)->value
;
6991 expr
.original_code
= STRING_CST
;
6992 c_parser_consume_token (parser
);
6994 case CPP_OBJC_STRING
:
6995 gcc_assert (c_dialect_objc ());
6997 = objc_build_string_object (c_parser_peek_token (parser
)->value
);
6998 c_parser_consume_token (parser
);
7001 switch (c_parser_peek_token (parser
)->id_kind
)
7005 tree id
= c_parser_peek_token (parser
)->value
;
7006 c_parser_consume_token (parser
);
7007 expr
.value
= build_external_ref (loc
, id
,
7008 (c_parser_peek_token (parser
)->type
7010 &expr
.original_type
);
7013 case C_ID_CLASSNAME
:
7015 /* Here we parse the Objective-C 2.0 Class.name dot
7017 tree class_name
= c_parser_peek_token (parser
)->value
;
7019 c_parser_consume_token (parser
);
7020 gcc_assert (c_dialect_objc ());
7021 if (!c_parser_require (parser
, CPP_DOT
, "expected %<.%>"))
7023 expr
.value
= error_mark_node
;
7026 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
7028 c_parser_error (parser
, "expected identifier");
7029 expr
.value
= error_mark_node
;
7032 component
= c_parser_peek_token (parser
)->value
;
7033 c_parser_consume_token (parser
);
7034 expr
.value
= objc_build_class_component_ref (class_name
,
7039 c_parser_error (parser
, "expected expression");
7040 expr
.value
= error_mark_node
;
7044 case CPP_OPEN_PAREN
:
7045 /* A parenthesized expression, statement expression or compound
7047 if (c_parser_peek_2nd_token (parser
)->type
== CPP_OPEN_BRACE
)
7049 /* A statement expression. */
7051 location_t brace_loc
;
7052 c_parser_consume_token (parser
);
7053 brace_loc
= c_parser_peek_token (parser
)->location
;
7054 c_parser_consume_token (parser
);
7055 if (!building_stmt_list_p ())
7057 error_at (loc
, "braced-group within expression allowed "
7058 "only inside a function");
7059 parser
->error
= true;
7060 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
, NULL
);
7061 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7062 expr
.value
= error_mark_node
;
7065 stmt
= c_begin_stmt_expr ();
7066 c_parser_compound_statement_nostart (parser
);
7067 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7069 pedwarn (loc
, OPT_Wpedantic
,
7070 "ISO C forbids braced-groups within expressions");
7071 expr
.value
= c_finish_stmt_expr (brace_loc
, stmt
);
7072 mark_exp_read (expr
.value
);
7074 else if (c_token_starts_typename (c_parser_peek_2nd_token (parser
)))
7076 /* A compound literal. ??? Can we actually get here rather
7077 than going directly to
7078 c_parser_postfix_expression_after_paren_type from
7081 struct c_type_name
*type_name
;
7082 c_parser_consume_token (parser
);
7083 loc
= c_parser_peek_token (parser
)->location
;
7084 type_name
= c_parser_type_name (parser
);
7085 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7087 if (type_name
== NULL
)
7089 expr
.value
= error_mark_node
;
7092 expr
= c_parser_postfix_expression_after_paren_type (parser
,
7098 /* A parenthesized expression. */
7099 c_parser_consume_token (parser
);
7100 expr
= c_parser_expression (parser
);
7101 if (TREE_CODE (expr
.value
) == MODIFY_EXPR
)
7102 TREE_NO_WARNING (expr
.value
) = 1;
7103 if (expr
.original_code
!= C_MAYBE_CONST_EXPR
)
7104 expr
.original_code
= ERROR_MARK
;
7105 /* Don't change EXPR.ORIGINAL_TYPE. */
7106 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7111 switch (c_parser_peek_token (parser
)->keyword
)
7113 case RID_FUNCTION_NAME
:
7114 case RID_PRETTY_FUNCTION_NAME
:
7115 case RID_C99_FUNCTION_NAME
:
7116 expr
.value
= fname_decl (loc
,
7117 c_parser_peek_token (parser
)->keyword
,
7118 c_parser_peek_token (parser
)->value
);
7119 c_parser_consume_token (parser
);
7122 c_parser_consume_token (parser
);
7123 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7125 expr
.value
= error_mark_node
;
7128 e1
= c_parser_expr_no_commas (parser
, NULL
);
7129 mark_exp_read (e1
.value
);
7130 e1
.value
= c_fully_fold (e1
.value
, false, NULL
);
7131 if (!c_parser_require (parser
, CPP_COMMA
, "expected %<,%>"))
7133 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7134 expr
.value
= error_mark_node
;
7137 loc
= c_parser_peek_token (parser
)->location
;
7138 t1
= c_parser_type_name (parser
);
7139 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7143 expr
.value
= error_mark_node
;
7147 tree type_expr
= NULL_TREE
;
7148 expr
.value
= c_build_va_arg (loc
, e1
.value
,
7149 groktypename (t1
, &type_expr
, NULL
));
7152 expr
.value
= build2 (C_MAYBE_CONST_EXPR
,
7153 TREE_TYPE (expr
.value
), type_expr
,
7155 C_MAYBE_CONST_EXPR_NON_CONST (expr
.value
) = true;
7160 c_parser_consume_token (parser
);
7161 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7163 expr
.value
= error_mark_node
;
7166 t1
= c_parser_type_name (parser
);
7168 parser
->error
= true;
7169 if (!c_parser_require (parser
, CPP_COMMA
, "expected %<,%>"))
7170 gcc_assert (parser
->error
);
7173 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7174 expr
.value
= error_mark_node
;
7179 tree type
= groktypename (t1
, NULL
, NULL
);
7181 if (type
== error_mark_node
)
7182 offsetof_ref
= error_mark_node
;
7185 offsetof_ref
= build1 (INDIRECT_REF
, type
, null_pointer_node
);
7186 SET_EXPR_LOCATION (offsetof_ref
, loc
);
7188 /* Parse the second argument to __builtin_offsetof. We
7189 must have one identifier, and beyond that we want to
7190 accept sub structure and sub array references. */
7191 if (c_parser_next_token_is (parser
, CPP_NAME
))
7193 offsetof_ref
= build_component_ref
7194 (loc
, offsetof_ref
, c_parser_peek_token (parser
)->value
);
7195 c_parser_consume_token (parser
);
7196 while (c_parser_next_token_is (parser
, CPP_DOT
)
7197 || c_parser_next_token_is (parser
,
7199 || c_parser_next_token_is (parser
,
7202 if (c_parser_next_token_is (parser
, CPP_DEREF
))
7204 loc
= c_parser_peek_token (parser
)->location
;
7205 offsetof_ref
= build_array_ref (loc
,
7210 else if (c_parser_next_token_is (parser
, CPP_DOT
))
7213 c_parser_consume_token (parser
);
7214 if (c_parser_next_token_is_not (parser
,
7217 c_parser_error (parser
, "expected identifier");
7220 offsetof_ref
= build_component_ref
7222 c_parser_peek_token (parser
)->value
);
7223 c_parser_consume_token (parser
);
7229 loc
= c_parser_peek_token (parser
)->location
;
7230 c_parser_consume_token (parser
);
7231 ce
= c_parser_expression (parser
);
7232 ce
= convert_lvalue_to_rvalue (loc
, ce
, false, false);
7234 idx
= c_fully_fold (idx
, false, NULL
);
7235 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
7237 offsetof_ref
= build_array_ref (loc
, offsetof_ref
, idx
);
7242 c_parser_error (parser
, "expected identifier");
7243 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7245 expr
.value
= fold_offsetof (offsetof_ref
);
7248 case RID_CHOOSE_EXPR
:
7250 vec
<c_expr_t
, va_gc
> *cexpr_list
;
7251 c_expr_t
*e1_p
, *e2_p
, *e3_p
;
7254 c_parser_consume_token (parser
);
7255 if (!c_parser_get_builtin_args (parser
,
7256 "__builtin_choose_expr",
7259 expr
.value
= error_mark_node
;
7263 if (vec_safe_length (cexpr_list
) != 3)
7265 error_at (loc
, "wrong number of arguments to "
7266 "%<__builtin_choose_expr%>");
7267 expr
.value
= error_mark_node
;
7271 e1_p
= &(*cexpr_list
)[0];
7272 e2_p
= &(*cexpr_list
)[1];
7273 e3_p
= &(*cexpr_list
)[2];
7276 mark_exp_read (e2_p
->value
);
7277 mark_exp_read (e3_p
->value
);
7278 if (TREE_CODE (c
) != INTEGER_CST
7279 || !INTEGRAL_TYPE_P (TREE_TYPE (c
)))
7281 "first argument to %<__builtin_choose_expr%> not"
7283 constant_expression_warning (c
);
7284 expr
= integer_zerop (c
) ? *e3_p
: *e2_p
;
7287 case RID_TYPES_COMPATIBLE_P
:
7288 c_parser_consume_token (parser
);
7289 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7291 expr
.value
= error_mark_node
;
7294 t1
= c_parser_type_name (parser
);
7297 expr
.value
= error_mark_node
;
7300 if (!c_parser_require (parser
, CPP_COMMA
, "expected %<,%>"))
7302 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7303 expr
.value
= error_mark_node
;
7306 t2
= c_parser_type_name (parser
);
7309 expr
.value
= error_mark_node
;
7312 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7316 e1
= groktypename (t1
, NULL
, NULL
);
7317 e2
= groktypename (t2
, NULL
, NULL
);
7318 if (e1
== error_mark_node
|| e2
== error_mark_node
)
7320 expr
.value
= error_mark_node
;
7324 e1
= TYPE_MAIN_VARIANT (e1
);
7325 e2
= TYPE_MAIN_VARIANT (e2
);
7328 = comptypes (e1
, e2
) ? integer_one_node
: integer_zero_node
;
7331 case RID_BUILTIN_COMPLEX
:
7333 vec
<c_expr_t
, va_gc
> *cexpr_list
;
7334 c_expr_t
*e1_p
, *e2_p
;
7336 c_parser_consume_token (parser
);
7337 if (!c_parser_get_builtin_args (parser
,
7338 "__builtin_complex",
7339 &cexpr_list
, false))
7341 expr
.value
= error_mark_node
;
7345 if (vec_safe_length (cexpr_list
) != 2)
7347 error_at (loc
, "wrong number of arguments to "
7348 "%<__builtin_complex%>");
7349 expr
.value
= error_mark_node
;
7353 e1_p
= &(*cexpr_list
)[0];
7354 e2_p
= &(*cexpr_list
)[1];
7356 *e1_p
= convert_lvalue_to_rvalue (loc
, *e1_p
, true, true);
7357 if (TREE_CODE (e1_p
->value
) == EXCESS_PRECISION_EXPR
)
7358 e1_p
->value
= convert (TREE_TYPE (e1_p
->value
),
7359 TREE_OPERAND (e1_p
->value
, 0));
7360 *e2_p
= convert_lvalue_to_rvalue (loc
, *e2_p
, true, true);
7361 if (TREE_CODE (e2_p
->value
) == EXCESS_PRECISION_EXPR
)
7362 e2_p
->value
= convert (TREE_TYPE (e2_p
->value
),
7363 TREE_OPERAND (e2_p
->value
, 0));
7364 if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p
->value
))
7365 || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p
->value
))
7366 || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p
->value
))
7367 || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p
->value
)))
7369 error_at (loc
, "%<__builtin_complex%> operand "
7370 "not of real binary floating-point type");
7371 expr
.value
= error_mark_node
;
7374 if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p
->value
))
7375 != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p
->value
)))
7378 "%<__builtin_complex%> operands of different types");
7379 expr
.value
= error_mark_node
;
7383 pedwarn (loc
, OPT_Wpedantic
,
7384 "ISO C90 does not support complex types");
7385 expr
.value
= build2 (COMPLEX_EXPR
,
7388 (TREE_TYPE (e1_p
->value
))),
7389 e1_p
->value
, e2_p
->value
);
7392 case RID_BUILTIN_SHUFFLE
:
7394 vec
<c_expr_t
, va_gc
> *cexpr_list
;
7398 c_parser_consume_token (parser
);
7399 if (!c_parser_get_builtin_args (parser
,
7400 "__builtin_shuffle",
7401 &cexpr_list
, false))
7403 expr
.value
= error_mark_node
;
7407 FOR_EACH_VEC_SAFE_ELT (cexpr_list
, i
, p
)
7408 *p
= convert_lvalue_to_rvalue (loc
, *p
, true, true);
7410 if (vec_safe_length (cexpr_list
) == 2)
7412 c_build_vec_perm_expr
7413 (loc
, (*cexpr_list
)[0].value
,
7414 NULL_TREE
, (*cexpr_list
)[1].value
);
7416 else if (vec_safe_length (cexpr_list
) == 3)
7418 c_build_vec_perm_expr
7419 (loc
, (*cexpr_list
)[0].value
,
7420 (*cexpr_list
)[1].value
,
7421 (*cexpr_list
)[2].value
);
7424 error_at (loc
, "wrong number of arguments to "
7425 "%<__builtin_shuffle%>");
7426 expr
.value
= error_mark_node
;
7430 case RID_AT_SELECTOR
:
7431 gcc_assert (c_dialect_objc ());
7432 c_parser_consume_token (parser
);
7433 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7435 expr
.value
= error_mark_node
;
7439 tree sel
= c_parser_objc_selector_arg (parser
);
7440 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7442 expr
.value
= objc_build_selector_expr (loc
, sel
);
7445 case RID_AT_PROTOCOL
:
7446 gcc_assert (c_dialect_objc ());
7447 c_parser_consume_token (parser
);
7448 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7450 expr
.value
= error_mark_node
;
7453 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
7455 c_parser_error (parser
, "expected identifier");
7456 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7457 expr
.value
= error_mark_node
;
7461 tree id
= c_parser_peek_token (parser
)->value
;
7462 c_parser_consume_token (parser
);
7463 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7465 expr
.value
= objc_build_protocol_expr (id
);
7469 /* Extension to support C-structures in the archiver. */
7470 gcc_assert (c_dialect_objc ());
7471 c_parser_consume_token (parser
);
7472 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
7474 expr
.value
= error_mark_node
;
7477 t1
= c_parser_type_name (parser
);
7480 expr
.value
= error_mark_node
;
7481 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
7484 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7487 tree type
= groktypename (t1
, NULL
, NULL
);
7488 expr
.value
= objc_build_encode_expr (type
);
7492 expr
= c_parser_generic_selection (parser
);
7494 case RID_CILK_SPAWN
:
7495 c_parser_consume_token (parser
);
7496 if (!flag_enable_cilkplus
)
7498 error_at (loc
, "-fcilkplus must be enabled to use "
7500 expr
= c_parser_postfix_expression (parser
);
7501 expr
.value
= error_mark_node
;
7503 if (c_parser_peek_token (parser
)->keyword
== RID_CILK_SPAWN
)
7505 error_at (loc
, "consecutive %<_Cilk_spawn%> keywords "
7506 "are not permitted");
7507 /* Now flush out all the _Cilk_spawns. */
7508 while (c_parser_peek_token (parser
)->keyword
== RID_CILK_SPAWN
)
7509 c_parser_consume_token (parser
);
7510 expr
= c_parser_postfix_expression (parser
);
7514 expr
= c_parser_postfix_expression (parser
);
7515 expr
.value
= build_cilk_spawn (loc
, expr
.value
);
7519 c_parser_error (parser
, "expected expression");
7520 expr
.value
= error_mark_node
;
7524 case CPP_OPEN_SQUARE
:
7525 if (c_dialect_objc ())
7527 tree receiver
, args
;
7528 c_parser_consume_token (parser
);
7529 receiver
= c_parser_objc_receiver (parser
);
7530 args
= c_parser_objc_message_args (parser
);
7531 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
7533 expr
.value
= objc_build_message_expr (receiver
, args
);
7536 /* Else fall through to report error. */
7538 c_parser_error (parser
, "expected expression");
7539 expr
.value
= error_mark_node
;
7542 return c_parser_postfix_expression_after_primary (parser
, loc
, expr
);
7545 /* Parse a postfix expression after a parenthesized type name: the
7546 brace-enclosed initializer of a compound literal, possibly followed
7547 by some postfix operators. This is separate because it is not
7548 possible to tell until after the type name whether a cast
7549 expression has a cast or a compound literal, or whether the operand
7550 of sizeof is a parenthesized type name or starts with a compound
7551 literal. TYPE_LOC is the location where TYPE_NAME starts--the
7552 location of the first token after the parentheses around the type
7555 static struct c_expr
7556 c_parser_postfix_expression_after_paren_type (c_parser
*parser
,
7557 struct c_type_name
*type_name
,
7558 location_t type_loc
)
7564 location_t start_loc
;
7565 tree type_expr
= NULL_TREE
;
7566 bool type_expr_const
= true;
7567 check_compound_literal_type (type_loc
, type_name
);
7568 start_init (NULL_TREE
, NULL
, 0);
7569 type
= groktypename (type_name
, &type_expr
, &type_expr_const
);
7570 start_loc
= c_parser_peek_token (parser
)->location
;
7571 if (type
!= error_mark_node
&& C_TYPE_VARIABLE_SIZE (type
))
7573 error_at (type_loc
, "compound literal has variable size");
7574 type
= error_mark_node
;
7576 init
= c_parser_braced_init (parser
, type
, false);
7578 maybe_warn_string_init (type
, init
);
7580 if (type
!= error_mark_node
7581 && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type
))
7582 && current_function_decl
)
7584 error ("compound literal qualified by address-space qualifier");
7585 type
= error_mark_node
;
7589 pedwarn (start_loc
, OPT_Wpedantic
, "ISO C90 forbids compound literals");
7590 non_const
= ((init
.value
&& TREE_CODE (init
.value
) == CONSTRUCTOR
)
7591 ? CONSTRUCTOR_NON_CONST (init
.value
)
7592 : init
.original_code
== C_MAYBE_CONST_EXPR
);
7593 non_const
|= !type_expr_const
;
7594 expr
.value
= build_compound_literal (start_loc
, type
, init
.value
, non_const
);
7595 expr
.original_code
= ERROR_MARK
;
7596 expr
.original_type
= NULL
;
7599 if (TREE_CODE (expr
.value
) == C_MAYBE_CONST_EXPR
)
7601 gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr
.value
) == NULL_TREE
);
7602 C_MAYBE_CONST_EXPR_PRE (expr
.value
) = type_expr
;
7606 gcc_assert (!non_const
);
7607 expr
.value
= build2 (C_MAYBE_CONST_EXPR
, type
,
7608 type_expr
, expr
.value
);
7611 return c_parser_postfix_expression_after_primary (parser
, start_loc
, expr
);
7614 /* Callback function for sizeof_pointer_memaccess_warning to compare
7618 sizeof_ptr_memacc_comptypes (tree type1
, tree type2
)
7620 return comptypes (type1
, type2
) == 1;
7623 /* Parse a postfix expression after the initial primary or compound
7624 literal; that is, parse a series of postfix operators.
7626 EXPR_LOC is the location of the primary expression. */
7628 static struct c_expr
7629 c_parser_postfix_expression_after_primary (c_parser
*parser
,
7630 location_t expr_loc
,
7633 struct c_expr orig_expr
;
7635 location_t sizeof_arg_loc
[3];
7638 vec
<tree
, va_gc
> *exprlist
;
7639 vec
<tree
, va_gc
> *origtypes
= NULL
;
7642 location_t op_loc
= c_parser_peek_token (parser
)->location
;
7643 switch (c_parser_peek_token (parser
)->type
)
7645 case CPP_OPEN_SQUARE
:
7646 /* Array reference. */
7647 c_parser_consume_token (parser
);
7648 if (flag_enable_cilkplus
7649 && c_parser_peek_token (parser
)->type
== CPP_COLON
)
7650 /* If we are here, then we have something like this:
7653 expr
.value
= c_parser_array_notation (expr_loc
, parser
, NULL_TREE
,
7657 idx
= c_parser_expression (parser
).value
;
7658 /* Here we have 3 options:
7659 1. Array [EXPR] -- Normal Array call.
7660 2. Array [EXPR : EXPR] -- Array notation without stride.
7661 3. Array [EXPR : EXPR : EXPR] -- Array notation with stride.
7663 For 1, we just handle it just like a normal array expression.
7664 For 2 and 3 we handle it like we handle array notations. The
7665 idx value we have above becomes the initial/start index.
7667 if (flag_enable_cilkplus
7668 && c_parser_peek_token (parser
)->type
== CPP_COLON
)
7669 expr
.value
= c_parser_array_notation (expr_loc
, parser
, idx
,
7673 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
,
7675 expr
.value
= build_array_ref (op_loc
, expr
.value
, idx
);
7678 expr
.original_code
= ERROR_MARK
;
7679 expr
.original_type
= NULL
;
7681 case CPP_OPEN_PAREN
:
7682 /* Function call. */
7683 c_parser_consume_token (parser
);
7684 for (i
= 0; i
< 3; i
++)
7686 sizeof_arg
[i
] = NULL_TREE
;
7687 sizeof_arg_loc
[i
] = UNKNOWN_LOCATION
;
7689 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
7692 exprlist
= c_parser_expr_list (parser
, true, false, &origtypes
,
7693 sizeof_arg_loc
, sizeof_arg
);
7694 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
7697 mark_exp_read (expr
.value
);
7698 if (warn_sizeof_pointer_memaccess
)
7699 sizeof_pointer_memaccess_warning (sizeof_arg_loc
,
7700 expr
.value
, exprlist
,
7702 sizeof_ptr_memacc_comptypes
);
7703 /* FIXME diagnostics: Ideally we want the FUNCNAME, not the
7704 "(" after the FUNCNAME, which is what we have now. */
7705 expr
.value
= build_function_call_vec (op_loc
, expr
.value
, exprlist
,
7707 expr
.original_code
= ERROR_MARK
;
7708 if (TREE_CODE (expr
.value
) == INTEGER_CST
7709 && TREE_CODE (orig_expr
.value
) == FUNCTION_DECL
7710 && DECL_BUILT_IN_CLASS (orig_expr
.value
) == BUILT_IN_NORMAL
7711 && DECL_FUNCTION_CODE (orig_expr
.value
) == BUILT_IN_CONSTANT_P
)
7712 expr
.original_code
= C_MAYBE_CONST_EXPR
;
7713 expr
.original_type
= NULL
;
7716 release_tree_vector (exprlist
);
7717 release_tree_vector (origtypes
);
7721 /* Structure element reference. */
7722 c_parser_consume_token (parser
);
7723 expr
= default_function_array_conversion (expr_loc
, expr
);
7724 if (c_parser_next_token_is (parser
, CPP_NAME
))
7725 ident
= c_parser_peek_token (parser
)->value
;
7728 c_parser_error (parser
, "expected identifier");
7729 expr
.value
= error_mark_node
;
7730 expr
.original_code
= ERROR_MARK
;
7731 expr
.original_type
= NULL
;
7734 c_parser_consume_token (parser
);
7735 expr
.value
= build_component_ref (op_loc
, expr
.value
, ident
);
7736 expr
.original_code
= ERROR_MARK
;
7737 if (TREE_CODE (expr
.value
) != COMPONENT_REF
)
7738 expr
.original_type
= NULL
;
7741 /* Remember the original type of a bitfield. */
7742 tree field
= TREE_OPERAND (expr
.value
, 1);
7743 if (TREE_CODE (field
) != FIELD_DECL
)
7744 expr
.original_type
= NULL
;
7746 expr
.original_type
= DECL_BIT_FIELD_TYPE (field
);
7750 /* Structure element reference. */
7751 c_parser_consume_token (parser
);
7752 expr
= convert_lvalue_to_rvalue (expr_loc
, expr
, true, false);
7753 if (c_parser_next_token_is (parser
, CPP_NAME
))
7754 ident
= c_parser_peek_token (parser
)->value
;
7757 c_parser_error (parser
, "expected identifier");
7758 expr
.value
= error_mark_node
;
7759 expr
.original_code
= ERROR_MARK
;
7760 expr
.original_type
= NULL
;
7763 c_parser_consume_token (parser
);
7764 expr
.value
= build_component_ref (op_loc
,
7765 build_indirect_ref (op_loc
,
7769 expr
.original_code
= ERROR_MARK
;
7770 if (TREE_CODE (expr
.value
) != COMPONENT_REF
)
7771 expr
.original_type
= NULL
;
7774 /* Remember the original type of a bitfield. */
7775 tree field
= TREE_OPERAND (expr
.value
, 1);
7776 if (TREE_CODE (field
) != FIELD_DECL
)
7777 expr
.original_type
= NULL
;
7779 expr
.original_type
= DECL_BIT_FIELD_TYPE (field
);
7783 /* Postincrement. */
7784 c_parser_consume_token (parser
);
7785 /* If the expressions have array notations, we expand them. */
7786 if (flag_enable_cilkplus
7787 && TREE_CODE (expr
.value
) == ARRAY_NOTATION_REF
)
7788 expr
= fix_array_notation_expr (expr_loc
, POSTINCREMENT_EXPR
, expr
);
7791 expr
= default_function_array_read_conversion (expr_loc
, expr
);
7792 expr
.value
= build_unary_op (op_loc
,
7793 POSTINCREMENT_EXPR
, expr
.value
, 0);
7795 expr
.original_code
= ERROR_MARK
;
7796 expr
.original_type
= NULL
;
7798 case CPP_MINUS_MINUS
:
7799 /* Postdecrement. */
7800 c_parser_consume_token (parser
);
7801 /* If the expressions have array notations, we expand them. */
7802 if (flag_enable_cilkplus
7803 && TREE_CODE (expr
.value
) == ARRAY_NOTATION_REF
)
7804 expr
= fix_array_notation_expr (expr_loc
, POSTDECREMENT_EXPR
, expr
);
7807 expr
= default_function_array_read_conversion (expr_loc
, expr
);
7808 expr
.value
= build_unary_op (op_loc
,
7809 POSTDECREMENT_EXPR
, expr
.value
, 0);
7811 expr
.original_code
= ERROR_MARK
;
7812 expr
.original_type
= NULL
;
7820 /* Parse an expression (C90 6.3.17, C99 6.5.17).
7823 assignment-expression
7824 expression , assignment-expression
7827 static struct c_expr
7828 c_parser_expression (c_parser
*parser
)
7830 location_t tloc
= c_parser_peek_token (parser
)->location
;
7832 expr
= c_parser_expr_no_commas (parser
, NULL
);
7833 if (c_parser_next_token_is (parser
, CPP_COMMA
))
7834 expr
= convert_lvalue_to_rvalue (tloc
, expr
, true, false);
7835 while (c_parser_next_token_is (parser
, CPP_COMMA
))
7839 location_t loc
= c_parser_peek_token (parser
)->location
;
7840 location_t expr_loc
;
7841 c_parser_consume_token (parser
);
7842 expr_loc
= c_parser_peek_token (parser
)->location
;
7843 lhsval
= expr
.value
;
7844 while (TREE_CODE (lhsval
) == COMPOUND_EXPR
)
7845 lhsval
= TREE_OPERAND (lhsval
, 1);
7846 if (DECL_P (lhsval
) || handled_component_p (lhsval
))
7847 mark_exp_read (lhsval
);
7848 next
= c_parser_expr_no_commas (parser
, NULL
);
7849 next
= convert_lvalue_to_rvalue (expr_loc
, next
, true, false);
7850 expr
.value
= build_compound_expr (loc
, expr
.value
, next
.value
);
7851 expr
.original_code
= COMPOUND_EXPR
;
7852 expr
.original_type
= next
.original_type
;
7857 /* Parse an expression and convert functions or arrays to pointers and
7858 lvalues to rvalues. */
7860 static struct c_expr
7861 c_parser_expression_conv (c_parser
*parser
)
7864 location_t loc
= c_parser_peek_token (parser
)->location
;
7865 expr
= c_parser_expression (parser
);
7866 expr
= convert_lvalue_to_rvalue (loc
, expr
, true, false);
7870 /* Parse a non-empty list of expressions. If CONVERT_P, convert
7871 functions and arrays to pointers and lvalues to rvalues. If
7872 FOLD_P, fold the expressions.
7875 assignment-expression
7876 nonempty-expr-list , assignment-expression
7879 static vec
<tree
, va_gc
> *
7880 c_parser_expr_list (c_parser
*parser
, bool convert_p
, bool fold_p
,
7881 vec
<tree
, va_gc
> **p_orig_types
,
7882 location_t
*sizeof_arg_loc
, tree
*sizeof_arg
)
7884 vec
<tree
, va_gc
> *ret
;
7885 vec
<tree
, va_gc
> *orig_types
;
7887 location_t loc
= c_parser_peek_token (parser
)->location
;
7888 location_t cur_sizeof_arg_loc
= UNKNOWN_LOCATION
;
7889 unsigned int idx
= 0;
7891 ret
= make_tree_vector ();
7892 if (p_orig_types
== NULL
)
7895 orig_types
= make_tree_vector ();
7897 if (sizeof_arg
!= NULL
7898 && c_parser_next_token_is_keyword (parser
, RID_SIZEOF
))
7899 cur_sizeof_arg_loc
= c_parser_peek_2nd_token (parser
)->location
;
7900 expr
= c_parser_expr_no_commas (parser
, NULL
);
7902 expr
= convert_lvalue_to_rvalue (loc
, expr
, true, true);
7904 expr
.value
= c_fully_fold (expr
.value
, false, NULL
);
7905 ret
->quick_push (expr
.value
);
7907 orig_types
->quick_push (expr
.original_type
);
7908 if (sizeof_arg
!= NULL
7909 && cur_sizeof_arg_loc
!= UNKNOWN_LOCATION
7910 && expr
.original_code
== SIZEOF_EXPR
)
7912 sizeof_arg
[0] = c_last_sizeof_arg
;
7913 sizeof_arg_loc
[0] = cur_sizeof_arg_loc
;
7915 while (c_parser_next_token_is (parser
, CPP_COMMA
))
7917 c_parser_consume_token (parser
);
7918 loc
= c_parser_peek_token (parser
)->location
;
7919 if (sizeof_arg
!= NULL
7920 && c_parser_next_token_is_keyword (parser
, RID_SIZEOF
))
7921 cur_sizeof_arg_loc
= c_parser_peek_2nd_token (parser
)->location
;
7923 cur_sizeof_arg_loc
= UNKNOWN_LOCATION
;
7924 expr
= c_parser_expr_no_commas (parser
, NULL
);
7926 expr
= convert_lvalue_to_rvalue (loc
, expr
, true, true);
7928 expr
.value
= c_fully_fold (expr
.value
, false, NULL
);
7929 vec_safe_push (ret
, expr
.value
);
7931 vec_safe_push (orig_types
, expr
.original_type
);
7933 && sizeof_arg
!= NULL
7934 && cur_sizeof_arg_loc
!= UNKNOWN_LOCATION
7935 && expr
.original_code
== SIZEOF_EXPR
)
7937 sizeof_arg
[idx
] = c_last_sizeof_arg
;
7938 sizeof_arg_loc
[idx
] = cur_sizeof_arg_loc
;
7942 *p_orig_types
= orig_types
;
7946 /* Parse Objective-C-specific constructs. */
7948 /* Parse an objc-class-definition.
7950 objc-class-definition:
7951 @interface identifier objc-superclass[opt] objc-protocol-refs[opt]
7952 objc-class-instance-variables[opt] objc-methodprotolist @end
7953 @implementation identifier objc-superclass[opt]
7954 objc-class-instance-variables[opt]
7955 @interface identifier ( identifier ) objc-protocol-refs[opt]
7956 objc-methodprotolist @end
7957 @interface identifier ( ) objc-protocol-refs[opt]
7958 objc-methodprotolist @end
7959 @implementation identifier ( identifier )
7964 "@interface identifier (" must start "@interface identifier (
7965 identifier ) ...": objc-methodprotolist in the first production may
7966 not start with a parenthesized identifier as a declarator of a data
7967 definition with no declaration specifiers if the objc-superclass,
7968 objc-protocol-refs and objc-class-instance-variables are omitted. */
7971 c_parser_objc_class_definition (c_parser
*parser
, tree attributes
)
7976 if (c_parser_next_token_is_keyword (parser
, RID_AT_INTERFACE
))
7978 else if (c_parser_next_token_is_keyword (parser
, RID_AT_IMPLEMENTATION
))
7983 c_parser_consume_token (parser
);
7984 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
7986 c_parser_error (parser
, "expected identifier");
7989 id1
= c_parser_peek_token (parser
)->value
;
7990 c_parser_consume_token (parser
);
7991 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
7993 /* We have a category or class extension. */
7995 tree proto
= NULL_TREE
;
7996 c_parser_consume_token (parser
);
7997 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
7999 if (iface_p
&& c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
8001 /* We have a class extension. */
8006 c_parser_error (parser
, "expected identifier or %<)%>");
8007 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
8013 id2
= c_parser_peek_token (parser
)->value
;
8014 c_parser_consume_token (parser
);
8016 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
8019 objc_start_category_implementation (id1
, id2
);
8022 if (c_parser_next_token_is (parser
, CPP_LESS
))
8023 proto
= c_parser_objc_protocol_refs (parser
);
8024 objc_start_category_interface (id1
, id2
, proto
, attributes
);
8025 c_parser_objc_methodprotolist (parser
);
8026 c_parser_require_keyword (parser
, RID_AT_END
, "expected %<@end%>");
8027 objc_finish_interface ();
8030 if (c_parser_next_token_is (parser
, CPP_COLON
))
8032 c_parser_consume_token (parser
);
8033 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8035 c_parser_error (parser
, "expected identifier");
8038 superclass
= c_parser_peek_token (parser
)->value
;
8039 c_parser_consume_token (parser
);
8042 superclass
= NULL_TREE
;
8045 tree proto
= NULL_TREE
;
8046 if (c_parser_next_token_is (parser
, CPP_LESS
))
8047 proto
= c_parser_objc_protocol_refs (parser
);
8048 objc_start_class_interface (id1
, superclass
, proto
, attributes
);
8051 objc_start_class_implementation (id1
, superclass
);
8052 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
8053 c_parser_objc_class_instance_variables (parser
);
8056 objc_continue_interface ();
8057 c_parser_objc_methodprotolist (parser
);
8058 c_parser_require_keyword (parser
, RID_AT_END
, "expected %<@end%>");
8059 objc_finish_interface ();
8063 objc_continue_implementation ();
8068 /* Parse objc-class-instance-variables.
8070 objc-class-instance-variables:
8071 { objc-instance-variable-decl-list[opt] }
8073 objc-instance-variable-decl-list:
8074 objc-visibility-spec
8075 objc-instance-variable-decl ;
8077 objc-instance-variable-decl-list objc-visibility-spec
8078 objc-instance-variable-decl-list objc-instance-variable-decl ;
8079 objc-instance-variable-decl-list ;
8081 objc-visibility-spec:
8086 objc-instance-variable-decl:
8091 c_parser_objc_class_instance_variables (c_parser
*parser
)
8093 gcc_assert (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
));
8094 c_parser_consume_token (parser
);
8095 while (c_parser_next_token_is_not (parser
, CPP_EOF
))
8098 /* Parse any stray semicolon. */
8099 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
8101 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
8103 c_parser_consume_token (parser
);
8106 /* Stop if at the end of the instance variables. */
8107 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
8109 c_parser_consume_token (parser
);
8112 /* Parse any objc-visibility-spec. */
8113 if (c_parser_next_token_is_keyword (parser
, RID_AT_PRIVATE
))
8115 c_parser_consume_token (parser
);
8116 objc_set_visibility (OBJC_IVAR_VIS_PRIVATE
);
8119 else if (c_parser_next_token_is_keyword (parser
, RID_AT_PROTECTED
))
8121 c_parser_consume_token (parser
);
8122 objc_set_visibility (OBJC_IVAR_VIS_PROTECTED
);
8125 else if (c_parser_next_token_is_keyword (parser
, RID_AT_PUBLIC
))
8127 c_parser_consume_token (parser
);
8128 objc_set_visibility (OBJC_IVAR_VIS_PUBLIC
);
8131 else if (c_parser_next_token_is_keyword (parser
, RID_AT_PACKAGE
))
8133 c_parser_consume_token (parser
);
8134 objc_set_visibility (OBJC_IVAR_VIS_PACKAGE
);
8137 else if (c_parser_next_token_is (parser
, CPP_PRAGMA
))
8139 c_parser_pragma (parser
, pragma_external
);
8143 /* Parse some comma-separated declarations. */
8144 decls
= c_parser_struct_declaration (parser
);
8147 /* There is a syntax error. We want to skip the offending
8148 tokens up to the next ';' (included) or '}'
8151 /* First, skip manually a ')' or ']'. This is because they
8152 reduce the nesting level, so c_parser_skip_until_found()
8153 wouldn't be able to skip past them. */
8154 c_token
*token
= c_parser_peek_token (parser
);
8155 if (token
->type
== CPP_CLOSE_PAREN
|| token
->type
== CPP_CLOSE_SQUARE
)
8156 c_parser_consume_token (parser
);
8158 /* Then, do the standard skipping. */
8159 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
8161 /* We hopefully recovered. Start normal parsing again. */
8162 parser
->error
= false;
8167 /* Comma-separated instance variables are chained together
8168 in reverse order; add them one by one. */
8169 tree ivar
= nreverse (decls
);
8170 for (; ivar
; ivar
= DECL_CHAIN (ivar
))
8171 objc_add_instance_variable (copy_node (ivar
));
8173 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
8177 /* Parse an objc-class-declaration.
8179 objc-class-declaration:
8180 @class identifier-list ;
8184 c_parser_objc_class_declaration (c_parser
*parser
)
8186 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_CLASS
));
8187 c_parser_consume_token (parser
);
8188 /* Any identifiers, including those declared as type names, are OK
8193 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8195 c_parser_error (parser
, "expected identifier");
8196 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
8197 parser
->error
= false;
8200 id
= c_parser_peek_token (parser
)->value
;
8201 objc_declare_class (id
);
8202 c_parser_consume_token (parser
);
8203 if (c_parser_next_token_is (parser
, CPP_COMMA
))
8204 c_parser_consume_token (parser
);
8208 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
8211 /* Parse an objc-alias-declaration.
8213 objc-alias-declaration:
8214 @compatibility_alias identifier identifier ;
8218 c_parser_objc_alias_declaration (c_parser
*parser
)
8221 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_ALIAS
));
8222 c_parser_consume_token (parser
);
8223 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8225 c_parser_error (parser
, "expected identifier");
8226 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
8229 id1
= c_parser_peek_token (parser
)->value
;
8230 c_parser_consume_token (parser
);
8231 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8233 c_parser_error (parser
, "expected identifier");
8234 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
8237 id2
= c_parser_peek_token (parser
)->value
;
8238 c_parser_consume_token (parser
);
8239 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
8240 objc_declare_alias (id1
, id2
);
8243 /* Parse an objc-protocol-definition.
8245 objc-protocol-definition:
8246 @protocol identifier objc-protocol-refs[opt] objc-methodprotolist @end
8247 @protocol identifier-list ;
8249 "@protocol identifier ;" should be resolved as "@protocol
8250 identifier-list ;": objc-methodprotolist may not start with a
8251 semicolon in the first alternative if objc-protocol-refs are
8255 c_parser_objc_protocol_definition (c_parser
*parser
, tree attributes
)
8257 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_PROTOCOL
));
8259 c_parser_consume_token (parser
);
8260 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8262 c_parser_error (parser
, "expected identifier");
8265 if (c_parser_peek_2nd_token (parser
)->type
== CPP_COMMA
8266 || c_parser_peek_2nd_token (parser
)->type
== CPP_SEMICOLON
)
8268 /* Any identifiers, including those declared as type names, are
8273 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8275 c_parser_error (parser
, "expected identifier");
8278 id
= c_parser_peek_token (parser
)->value
;
8279 objc_declare_protocol (id
, attributes
);
8280 c_parser_consume_token (parser
);
8281 if (c_parser_next_token_is (parser
, CPP_COMMA
))
8282 c_parser_consume_token (parser
);
8286 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
8290 tree id
= c_parser_peek_token (parser
)->value
;
8291 tree proto
= NULL_TREE
;
8292 c_parser_consume_token (parser
);
8293 if (c_parser_next_token_is (parser
, CPP_LESS
))
8294 proto
= c_parser_objc_protocol_refs (parser
);
8295 parser
->objc_pq_context
= true;
8296 objc_start_protocol (id
, proto
, attributes
);
8297 c_parser_objc_methodprotolist (parser
);
8298 c_parser_require_keyword (parser
, RID_AT_END
, "expected %<@end%>");
8299 parser
->objc_pq_context
= false;
8300 objc_finish_interface ();
8304 /* Parse an objc-method-type.
8310 Return true if it is a class method (+) and false if it is
8311 an instance method (-).
8314 c_parser_objc_method_type (c_parser
*parser
)
8316 switch (c_parser_peek_token (parser
)->type
)
8319 c_parser_consume_token (parser
);
8322 c_parser_consume_token (parser
);
8329 /* Parse an objc-method-definition.
8331 objc-method-definition:
8332 objc-method-type objc-method-decl ;[opt] compound-statement
8336 c_parser_objc_method_definition (c_parser
*parser
)
8338 bool is_class_method
= c_parser_objc_method_type (parser
);
8339 tree decl
, attributes
= NULL_TREE
, expr
= NULL_TREE
;
8340 parser
->objc_pq_context
= true;
8341 decl
= c_parser_objc_method_decl (parser
, is_class_method
, &attributes
,
8343 if (decl
== error_mark_node
)
8344 return; /* Bail here. */
8346 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
8348 c_parser_consume_token (parser
);
8349 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
8350 "extra semicolon in method definition specified");
8353 if (!c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
8355 c_parser_error (parser
, "expected %<{%>");
8359 parser
->objc_pq_context
= false;
8360 if (objc_start_method_definition (is_class_method
, decl
, attributes
, expr
))
8362 add_stmt (c_parser_compound_statement (parser
));
8363 objc_finish_method_definition (current_function_decl
);
8367 /* This code is executed when we find a method definition
8368 outside of an @implementation context (or invalid for other
8369 reasons). Parse the method (to keep going) but do not emit
8372 c_parser_compound_statement (parser
);
8376 /* Parse an objc-methodprotolist.
8378 objc-methodprotolist:
8380 objc-methodprotolist objc-methodproto
8381 objc-methodprotolist declaration
8382 objc-methodprotolist ;
8386 The declaration is a data definition, which may be missing
8387 declaration specifiers under the same rules and diagnostics as
8388 other data definitions outside functions, and the stray semicolon
8389 is diagnosed the same way as a stray semicolon outside a
8393 c_parser_objc_methodprotolist (c_parser
*parser
)
8397 /* The list is terminated by @end. */
8398 switch (c_parser_peek_token (parser
)->type
)
8401 pedwarn (c_parser_peek_token (parser
)->location
, OPT_Wpedantic
,
8402 "ISO C does not allow extra %<;%> outside of a function");
8403 c_parser_consume_token (parser
);
8407 c_parser_objc_methodproto (parser
);
8410 c_parser_pragma (parser
, pragma_external
);
8415 if (c_parser_next_token_is_keyword (parser
, RID_AT_END
))
8417 else if (c_parser_next_token_is_keyword (parser
, RID_AT_PROPERTY
))
8418 c_parser_objc_at_property_declaration (parser
);
8419 else if (c_parser_next_token_is_keyword (parser
, RID_AT_OPTIONAL
))
8421 objc_set_method_opt (true);
8422 c_parser_consume_token (parser
);
8424 else if (c_parser_next_token_is_keyword (parser
, RID_AT_REQUIRED
))
8426 objc_set_method_opt (false);
8427 c_parser_consume_token (parser
);
8430 c_parser_declaration_or_fndef (parser
, false, false, true,
8431 false, true, NULL
, vNULL
);
8437 /* Parse an objc-methodproto.
8440 objc-method-type objc-method-decl ;
8444 c_parser_objc_methodproto (c_parser
*parser
)
8446 bool is_class_method
= c_parser_objc_method_type (parser
);
8447 tree decl
, attributes
= NULL_TREE
;
8449 /* Remember protocol qualifiers in prototypes. */
8450 parser
->objc_pq_context
= true;
8451 decl
= c_parser_objc_method_decl (parser
, is_class_method
, &attributes
,
8453 /* Forget protocol qualifiers now. */
8454 parser
->objc_pq_context
= false;
8456 /* Do not allow the presence of attributes to hide an erroneous
8457 method implementation in the interface section. */
8458 if (!c_parser_next_token_is (parser
, CPP_SEMICOLON
))
8460 c_parser_error (parser
, "expected %<;%>");
8464 if (decl
!= error_mark_node
)
8465 objc_add_method_declaration (is_class_method
, decl
, attributes
);
8467 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
8470 /* If we are at a position that method attributes may be present, check that
8471 there are not any parsed already (a syntax error) and then collect any
8472 specified at the current location. Finally, if new attributes were present,
8473 check that the next token is legal ( ';' for decls and '{' for defs). */
8476 c_parser_objc_maybe_method_attributes (c_parser
* parser
, tree
* attributes
)
8481 c_parser_error (parser
,
8482 "method attributes must be specified at the end only");
8483 *attributes
= NULL_TREE
;
8487 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
8488 *attributes
= c_parser_attributes (parser
);
8490 /* If there were no attributes here, just report any earlier error. */
8491 if (*attributes
== NULL_TREE
|| bad
)
8494 /* If the attributes are followed by a ; or {, then just report any earlier
8496 if (c_parser_next_token_is (parser
, CPP_SEMICOLON
)
8497 || c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
8500 /* We've got attributes, but not at the end. */
8501 c_parser_error (parser
,
8502 "expected %<;%> or %<{%> after method attribute definition");
8506 /* Parse an objc-method-decl.
8509 ( objc-type-name ) objc-selector
8511 ( objc-type-name ) objc-keyword-selector objc-optparmlist
8512 objc-keyword-selector objc-optparmlist
8515 objc-keyword-selector:
8517 objc-keyword-selector objc-keyword-decl
8520 objc-selector : ( objc-type-name ) identifier
8521 objc-selector : identifier
8522 : ( objc-type-name ) identifier
8526 objc-optparms objc-optellipsis
8530 objc-opt-parms , parameter-declaration
8538 c_parser_objc_method_decl (c_parser
*parser
, bool is_class_method
,
8539 tree
*attributes
, tree
*expr
)
8541 tree type
= NULL_TREE
;
8543 tree parms
= NULL_TREE
;
8544 bool ellipsis
= false;
8545 bool attr_err
= false;
8547 *attributes
= NULL_TREE
;
8548 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
8550 c_parser_consume_token (parser
);
8551 type
= c_parser_objc_type_name (parser
);
8552 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
8554 sel
= c_parser_objc_selector (parser
);
8555 /* If there is no selector, or a colon follows, we have an
8556 objc-keyword-selector. If there is a selector, and a colon does
8557 not follow, that selector ends the objc-method-decl. */
8558 if (!sel
|| c_parser_next_token_is (parser
, CPP_COLON
))
8561 tree list
= NULL_TREE
;
8564 tree atype
= NULL_TREE
, id
, keyworddecl
;
8565 tree param_attr
= NULL_TREE
;
8566 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
8568 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
8570 c_parser_consume_token (parser
);
8571 atype
= c_parser_objc_type_name (parser
);
8572 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
8575 /* New ObjC allows attributes on method parameters. */
8576 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
8577 param_attr
= c_parser_attributes (parser
);
8578 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8580 c_parser_error (parser
, "expected identifier");
8581 return error_mark_node
;
8583 id
= c_parser_peek_token (parser
)->value
;
8584 c_parser_consume_token (parser
);
8585 keyworddecl
= objc_build_keyword_decl (tsel
, atype
, id
, param_attr
);
8586 list
= chainon (list
, keyworddecl
);
8587 tsel
= c_parser_objc_selector (parser
);
8588 if (!tsel
&& c_parser_next_token_is_not (parser
, CPP_COLON
))
8592 attr_err
|= c_parser_objc_maybe_method_attributes (parser
, attributes
) ;
8594 /* Parse the optional parameter list. Optional Objective-C
8595 method parameters follow the C syntax, and may include '...'
8596 to denote a variable number of arguments. */
8597 parms
= make_node (TREE_LIST
);
8598 while (c_parser_next_token_is (parser
, CPP_COMMA
))
8600 struct c_parm
*parm
;
8601 c_parser_consume_token (parser
);
8602 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
8605 c_parser_consume_token (parser
);
8606 attr_err
|= c_parser_objc_maybe_method_attributes
8607 (parser
, attributes
) ;
8610 parm
= c_parser_parameter_declaration (parser
, NULL_TREE
);
8613 parms
= chainon (parms
,
8614 build_tree_list (NULL_TREE
, grokparm (parm
, expr
)));
8619 attr_err
|= c_parser_objc_maybe_method_attributes (parser
, attributes
) ;
8623 c_parser_error (parser
, "objective-c method declaration is expected");
8624 return error_mark_node
;
8628 return error_mark_node
;
8630 return objc_build_method_signature (is_class_method
, type
, sel
, parms
, ellipsis
);
8633 /* Parse an objc-type-name.
8636 objc-type-qualifiers[opt] type-name
8637 objc-type-qualifiers[opt]
8639 objc-type-qualifiers:
8641 objc-type-qualifiers objc-type-qualifier
8643 objc-type-qualifier: one of
8644 in out inout bycopy byref oneway
8648 c_parser_objc_type_name (c_parser
*parser
)
8650 tree quals
= NULL_TREE
;
8651 struct c_type_name
*type_name
= NULL
;
8652 tree type
= NULL_TREE
;
8655 c_token
*token
= c_parser_peek_token (parser
);
8656 if (token
->type
== CPP_KEYWORD
8657 && (token
->keyword
== RID_IN
8658 || token
->keyword
== RID_OUT
8659 || token
->keyword
== RID_INOUT
8660 || token
->keyword
== RID_BYCOPY
8661 || token
->keyword
== RID_BYREF
8662 || token
->keyword
== RID_ONEWAY
))
8664 quals
= chainon (build_tree_list (NULL_TREE
, token
->value
), quals
);
8665 c_parser_consume_token (parser
);
8670 if (c_parser_next_tokens_start_typename (parser
, cla_prefer_type
))
8671 type_name
= c_parser_type_name (parser
);
8673 type
= groktypename (type_name
, NULL
, NULL
);
8675 /* If the type is unknown, and error has already been produced and
8676 we need to recover from the error. In that case, use NULL_TREE
8677 for the type, as if no type had been specified; this will use the
8678 default type ('id') which is good for error recovery. */
8679 if (type
== error_mark_node
)
8682 return build_tree_list (quals
, type
);
8685 /* Parse objc-protocol-refs.
8692 c_parser_objc_protocol_refs (c_parser
*parser
)
8694 tree list
= NULL_TREE
;
8695 gcc_assert (c_parser_next_token_is (parser
, CPP_LESS
));
8696 c_parser_consume_token (parser
);
8697 /* Any identifiers, including those declared as type names, are OK
8702 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
8704 c_parser_error (parser
, "expected identifier");
8707 id
= c_parser_peek_token (parser
)->value
;
8708 list
= chainon (list
, build_tree_list (NULL_TREE
, id
));
8709 c_parser_consume_token (parser
);
8710 if (c_parser_next_token_is (parser
, CPP_COMMA
))
8711 c_parser_consume_token (parser
);
8715 c_parser_require (parser
, CPP_GREATER
, "expected %<>%>");
8719 /* Parse an objc-try-catch-finally-statement.
8721 objc-try-catch-finally-statement:
8722 @try compound-statement objc-catch-list[opt]
8723 @try compound-statement objc-catch-list[opt] @finally compound-statement
8726 @catch ( objc-catch-parameter-declaration ) compound-statement
8727 objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement
8729 objc-catch-parameter-declaration:
8730 parameter-declaration
8733 where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS.
8735 PS: This function is identical to cp_parser_objc_try_catch_finally_statement
8736 for C++. Keep them in sync. */
8739 c_parser_objc_try_catch_finally_statement (c_parser
*parser
)
8741 location_t location
;
8744 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_TRY
));
8745 c_parser_consume_token (parser
);
8746 location
= c_parser_peek_token (parser
)->location
;
8747 objc_maybe_warn_exceptions (location
);
8748 stmt
= c_parser_compound_statement (parser
);
8749 objc_begin_try_stmt (location
, stmt
);
8751 while (c_parser_next_token_is_keyword (parser
, RID_AT_CATCH
))
8753 struct c_parm
*parm
;
8754 tree parameter_declaration
= error_mark_node
;
8755 bool seen_open_paren
= false;
8757 c_parser_consume_token (parser
);
8758 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
8759 seen_open_paren
= true;
8760 if (c_parser_next_token_is (parser
, CPP_ELLIPSIS
))
8762 /* We have "@catch (...)" (where the '...' are literally
8763 what is in the code). Skip the '...'.
8764 parameter_declaration is set to NULL_TREE, and
8765 objc_being_catch_clauses() knows that that means
8767 c_parser_consume_token (parser
);
8768 parameter_declaration
= NULL_TREE
;
8772 /* We have "@catch (NSException *exception)" or something
8773 like that. Parse the parameter declaration. */
8774 parm
= c_parser_parameter_declaration (parser
, NULL_TREE
);
8776 parameter_declaration
= error_mark_node
;
8778 parameter_declaration
= grokparm (parm
, NULL
);
8780 if (seen_open_paren
)
8781 c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
8784 /* If there was no open parenthesis, we are recovering from
8785 an error, and we are trying to figure out what mistake
8786 the user has made. */
8788 /* If there is an immediate closing parenthesis, the user
8789 probably forgot the opening one (ie, they typed "@catch
8790 NSException *e)". Parse the closing parenthesis and keep
8792 if (c_parser_next_token_is (parser
, CPP_CLOSE_PAREN
))
8793 c_parser_consume_token (parser
);
8795 /* If these is no immediate closing parenthesis, the user
8796 probably doesn't know that parenthesis are required at
8797 all (ie, they typed "@catch NSException *e"). So, just
8798 forget about the closing parenthesis and keep going. */
8800 objc_begin_catch_clause (parameter_declaration
);
8801 if (c_parser_require (parser
, CPP_OPEN_BRACE
, "expected %<{%>"))
8802 c_parser_compound_statement_nostart (parser
);
8803 objc_finish_catch_clause ();
8805 if (c_parser_next_token_is_keyword (parser
, RID_AT_FINALLY
))
8807 c_parser_consume_token (parser
);
8808 location
= c_parser_peek_token (parser
)->location
;
8809 stmt
= c_parser_compound_statement (parser
);
8810 objc_build_finally_clause (location
, stmt
);
8812 objc_finish_try_stmt ();
8815 /* Parse an objc-synchronized-statement.
8817 objc-synchronized-statement:
8818 @synchronized ( expression ) compound-statement
8822 c_parser_objc_synchronized_statement (c_parser
*parser
)
8826 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_SYNCHRONIZED
));
8827 c_parser_consume_token (parser
);
8828 loc
= c_parser_peek_token (parser
)->location
;
8829 objc_maybe_warn_exceptions (loc
);
8830 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
8832 struct c_expr ce
= c_parser_expression (parser
);
8833 ce
= convert_lvalue_to_rvalue (loc
, ce
, false, false);
8835 expr
= c_fully_fold (expr
, false, NULL
);
8836 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
8839 expr
= error_mark_node
;
8840 stmt
= c_parser_compound_statement (parser
);
8841 objc_build_synchronized (loc
, expr
, stmt
);
8844 /* Parse an objc-selector; return NULL_TREE without an error if the
8845 next token is not an objc-selector.
8850 enum struct union if else while do for switch case default
8851 break continue return goto asm sizeof typeof __alignof
8852 unsigned long const short volatile signed restrict _Complex
8853 in out inout bycopy byref oneway int char float double void _Bool
8856 ??? Why this selection of keywords but not, for example, storage
8857 class specifiers? */
8860 c_parser_objc_selector (c_parser
*parser
)
8862 c_token
*token
= c_parser_peek_token (parser
);
8863 tree value
= token
->value
;
8864 if (token
->type
== CPP_NAME
)
8866 c_parser_consume_token (parser
);
8869 if (token
->type
!= CPP_KEYWORD
)
8871 switch (token
->keyword
)
8915 c_parser_consume_token (parser
);
8922 /* Parse an objc-selector-arg.
8926 objc-keywordname-list
8928 objc-keywordname-list:
8930 objc-keywordname-list objc-keywordname
8938 c_parser_objc_selector_arg (c_parser
*parser
)
8940 tree sel
= c_parser_objc_selector (parser
);
8941 tree list
= NULL_TREE
;
8942 if (sel
&& c_parser_next_token_is_not (parser
, CPP_COLON
))
8946 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
8948 list
= chainon (list
, build_tree_list (sel
, NULL_TREE
));
8949 sel
= c_parser_objc_selector (parser
);
8950 if (!sel
&& c_parser_next_token_is_not (parser
, CPP_COLON
))
8956 /* Parse an objc-receiver.
8965 c_parser_objc_receiver (c_parser
*parser
)
8967 location_t loc
= c_parser_peek_token (parser
)->location
;
8969 if (c_parser_peek_token (parser
)->type
== CPP_NAME
8970 && (c_parser_peek_token (parser
)->id_kind
== C_ID_TYPENAME
8971 || c_parser_peek_token (parser
)->id_kind
== C_ID_CLASSNAME
))
8973 tree id
= c_parser_peek_token (parser
)->value
;
8974 c_parser_consume_token (parser
);
8975 return objc_get_class_reference (id
);
8977 struct c_expr ce
= c_parser_expression (parser
);
8978 ce
= convert_lvalue_to_rvalue (loc
, ce
, false, false);
8979 return c_fully_fold (ce
.value
, false, NULL
);
8982 /* Parse objc-message-args.
8986 objc-keywordarg-list
8988 objc-keywordarg-list:
8990 objc-keywordarg-list objc-keywordarg
8993 objc-selector : objc-keywordexpr
8998 c_parser_objc_message_args (c_parser
*parser
)
9000 tree sel
= c_parser_objc_selector (parser
);
9001 tree list
= NULL_TREE
;
9002 if (sel
&& c_parser_next_token_is_not (parser
, CPP_COLON
))
9007 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
9008 return error_mark_node
;
9009 keywordexpr
= c_parser_objc_keywordexpr (parser
);
9010 list
= chainon (list
, build_tree_list (sel
, keywordexpr
));
9011 sel
= c_parser_objc_selector (parser
);
9012 if (!sel
&& c_parser_next_token_is_not (parser
, CPP_COLON
))
9018 /* Parse an objc-keywordexpr.
9025 c_parser_objc_keywordexpr (c_parser
*parser
)
9028 vec
<tree
, va_gc
> *expr_list
= c_parser_expr_list (parser
, true, true,
9030 if (vec_safe_length (expr_list
) == 1)
9032 /* Just return the expression, remove a level of
9034 ret
= (*expr_list
)[0];
9038 /* We have a comma expression, we will collapse later. */
9039 ret
= build_tree_list_vec (expr_list
);
9041 release_tree_vector (expr_list
);
9045 /* A check, needed in several places, that ObjC interface, implementation or
9046 method definitions are not prefixed by incorrect items. */
9048 c_parser_objc_diagnose_bad_element_prefix (c_parser
*parser
,
9049 struct c_declspecs
*specs
)
9051 if (!specs
->declspecs_seen_p
|| specs
->non_sc_seen_p
9052 || specs
->typespec_kind
!= ctsk_none
)
9054 c_parser_error (parser
,
9055 "no type or storage class may be specified here,");
9056 c_parser_skip_to_end_of_block_or_statement (parser
);
9062 /* Parse an Objective-C @property declaration. The syntax is:
9064 objc-property-declaration:
9065 '@property' objc-property-attributes[opt] struct-declaration ;
9067 objc-property-attributes:
9068 '(' objc-property-attribute-list ')'
9070 objc-property-attribute-list:
9071 objc-property-attribute
9072 objc-property-attribute-list, objc-property-attribute
9074 objc-property-attribute
9075 'getter' = identifier
9076 'setter' = identifier
9085 @property NSString *name;
9086 @property (readonly) id object;
9087 @property (retain, nonatomic, getter=getTheName) id name;
9088 @property int a, b, c;
9090 PS: This function is identical to cp_parser_objc_at_propery_declaration
9091 for C++. Keep them in sync. */
9093 c_parser_objc_at_property_declaration (c_parser
*parser
)
9095 /* The following variables hold the attributes of the properties as
9096 parsed. They are 'false' or 'NULL_TREE' if the attribute was not
9097 seen. When we see an attribute, we set them to 'true' (if they
9098 are boolean properties) or to the identifier (if they have an
9099 argument, ie, for getter and setter). Note that here we only
9100 parse the list of attributes, check the syntax and accumulate the
9101 attributes that we find. objc_add_property_declaration() will
9102 then process the information. */
9103 bool property_assign
= false;
9104 bool property_copy
= false;
9105 tree property_getter_ident
= NULL_TREE
;
9106 bool property_nonatomic
= false;
9107 bool property_readonly
= false;
9108 bool property_readwrite
= false;
9109 bool property_retain
= false;
9110 tree property_setter_ident
= NULL_TREE
;
9112 /* 'properties' is the list of properties that we read. Usually a
9113 single one, but maybe more (eg, in "@property int a, b, c;" there
9118 loc
= c_parser_peek_token (parser
)->location
;
9119 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_PROPERTY
));
9121 c_parser_consume_token (parser
); /* Eat '@property'. */
9123 /* Parse the optional attribute list... */
9124 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
9127 c_parser_consume_token (parser
);
9129 /* Property attribute keywords are valid now. */
9130 parser
->objc_property_attr_context
= true;
9134 bool syntax_error
= false;
9135 c_token
*token
= c_parser_peek_token (parser
);
9138 if (token
->type
!= CPP_KEYWORD
)
9140 if (token
->type
== CPP_CLOSE_PAREN
)
9141 c_parser_error (parser
, "expected identifier");
9144 c_parser_consume_token (parser
);
9145 c_parser_error (parser
, "unknown property attribute");
9149 keyword
= token
->keyword
;
9150 c_parser_consume_token (parser
);
9153 case RID_ASSIGN
: property_assign
= true; break;
9154 case RID_COPY
: property_copy
= true; break;
9155 case RID_NONATOMIC
: property_nonatomic
= true; break;
9156 case RID_READONLY
: property_readonly
= true; break;
9157 case RID_READWRITE
: property_readwrite
= true; break;
9158 case RID_RETAIN
: property_retain
= true; break;
9162 if (c_parser_next_token_is_not (parser
, CPP_EQ
))
9164 if (keyword
== RID_GETTER
)
9165 c_parser_error (parser
,
9166 "missing %<=%> (after %<getter%> attribute)");
9168 c_parser_error (parser
,
9169 "missing %<=%> (after %<setter%> attribute)");
9170 syntax_error
= true;
9173 c_parser_consume_token (parser
); /* eat the = */
9174 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
9176 c_parser_error (parser
, "expected identifier");
9177 syntax_error
= true;
9180 if (keyword
== RID_SETTER
)
9182 if (property_setter_ident
!= NULL_TREE
)
9183 c_parser_error (parser
, "the %<setter%> attribute may only be specified once");
9185 property_setter_ident
= c_parser_peek_token (parser
)->value
;
9186 c_parser_consume_token (parser
);
9187 if (c_parser_next_token_is_not (parser
, CPP_COLON
))
9188 c_parser_error (parser
, "setter name must terminate with %<:%>");
9190 c_parser_consume_token (parser
);
9194 if (property_getter_ident
!= NULL_TREE
)
9195 c_parser_error (parser
, "the %<getter%> attribute may only be specified once");
9197 property_getter_ident
= c_parser_peek_token (parser
)->value
;
9198 c_parser_consume_token (parser
);
9202 c_parser_error (parser
, "unknown property attribute");
9203 syntax_error
= true;
9210 if (c_parser_next_token_is (parser
, CPP_COMMA
))
9211 c_parser_consume_token (parser
);
9215 parser
->objc_property_attr_context
= false;
9216 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
9218 /* ... and the property declaration(s). */
9219 properties
= c_parser_struct_declaration (parser
);
9221 if (properties
== error_mark_node
)
9223 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
9224 parser
->error
= false;
9228 if (properties
== NULL_TREE
)
9229 c_parser_error (parser
, "expected identifier");
9232 /* Comma-separated properties are chained together in
9233 reverse order; add them one by one. */
9234 properties
= nreverse (properties
);
9236 for (; properties
; properties
= TREE_CHAIN (properties
))
9237 objc_add_property_declaration (loc
, copy_node (properties
),
9238 property_readonly
, property_readwrite
,
9239 property_assign
, property_retain
,
9240 property_copy
, property_nonatomic
,
9241 property_getter_ident
, property_setter_ident
);
9244 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
9245 parser
->error
= false;
9248 /* Parse an Objective-C @synthesize declaration. The syntax is:
9250 objc-synthesize-declaration:
9251 @synthesize objc-synthesize-identifier-list ;
9253 objc-synthesize-identifier-list:
9254 objc-synthesize-identifier
9255 objc-synthesize-identifier-list, objc-synthesize-identifier
9257 objc-synthesize-identifier
9259 identifier = identifier
9262 @synthesize MyProperty;
9263 @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty;
9265 PS: This function is identical to cp_parser_objc_at_synthesize_declaration
9266 for C++. Keep them in sync.
9269 c_parser_objc_at_synthesize_declaration (c_parser
*parser
)
9271 tree list
= NULL_TREE
;
9273 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_SYNTHESIZE
));
9274 loc
= c_parser_peek_token (parser
)->location
;
9276 c_parser_consume_token (parser
);
9279 tree property
, ivar
;
9280 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
9282 c_parser_error (parser
, "expected identifier");
9283 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
9284 /* Once we find the semicolon, we can resume normal parsing.
9285 We have to reset parser->error manually because
9286 c_parser_skip_until_found() won't reset it for us if the
9287 next token is precisely a semicolon. */
9288 parser
->error
= false;
9291 property
= c_parser_peek_token (parser
)->value
;
9292 c_parser_consume_token (parser
);
9293 if (c_parser_next_token_is (parser
, CPP_EQ
))
9295 c_parser_consume_token (parser
);
9296 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
9298 c_parser_error (parser
, "expected identifier");
9299 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
9300 parser
->error
= false;
9303 ivar
= c_parser_peek_token (parser
)->value
;
9304 c_parser_consume_token (parser
);
9308 list
= chainon (list
, build_tree_list (ivar
, property
));
9309 if (c_parser_next_token_is (parser
, CPP_COMMA
))
9310 c_parser_consume_token (parser
);
9314 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
9315 objc_add_synthesize_declaration (loc
, list
);
9318 /* Parse an Objective-C @dynamic declaration. The syntax is:
9320 objc-dynamic-declaration:
9321 @dynamic identifier-list ;
9324 @dynamic MyProperty;
9325 @dynamic MyProperty, AnotherProperty;
9327 PS: This function is identical to cp_parser_objc_at_dynamic_declaration
9328 for C++. Keep them in sync.
9331 c_parser_objc_at_dynamic_declaration (c_parser
*parser
)
9333 tree list
= NULL_TREE
;
9335 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_AT_DYNAMIC
));
9336 loc
= c_parser_peek_token (parser
)->location
;
9338 c_parser_consume_token (parser
);
9342 if (c_parser_next_token_is_not (parser
, CPP_NAME
))
9344 c_parser_error (parser
, "expected identifier");
9345 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, NULL
);
9346 parser
->error
= false;
9349 property
= c_parser_peek_token (parser
)->value
;
9350 list
= chainon (list
, build_tree_list (NULL_TREE
, property
));
9351 c_parser_consume_token (parser
);
9352 if (c_parser_next_token_is (parser
, CPP_COMMA
))
9353 c_parser_consume_token (parser
);
9357 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
9358 objc_add_dynamic_declaration (loc
, list
);
9362 /* Handle pragmas. Some OpenMP pragmas are associated with, and therefore
9363 should be considered, statements. ALLOW_STMT is true if we're within
9364 the context of a function and such pragmas are to be allowed. Returns
9365 true if we actually parsed such a pragma. */
9368 c_parser_pragma (c_parser
*parser
, enum pragma_context context
)
9372 id
= c_parser_peek_token (parser
)->pragma_kind
;
9373 gcc_assert (id
!= PRAGMA_NONE
);
9377 case PRAGMA_OMP_BARRIER
:
9378 if (context
!= pragma_compound
)
9380 if (context
== pragma_stmt
)
9381 c_parser_error (parser
, "%<#pragma omp barrier%> may only be "
9382 "used in compound statements");
9385 c_parser_omp_barrier (parser
);
9388 case PRAGMA_OMP_FLUSH
:
9389 if (context
!= pragma_compound
)
9391 if (context
== pragma_stmt
)
9392 c_parser_error (parser
, "%<#pragma omp flush%> may only be "
9393 "used in compound statements");
9396 c_parser_omp_flush (parser
);
9399 case PRAGMA_OMP_TASKWAIT
:
9400 if (context
!= pragma_compound
)
9402 if (context
== pragma_stmt
)
9403 c_parser_error (parser
, "%<#pragma omp taskwait%> may only be "
9404 "used in compound statements");
9407 c_parser_omp_taskwait (parser
);
9410 case PRAGMA_OMP_TASKYIELD
:
9411 if (context
!= pragma_compound
)
9413 if (context
== pragma_stmt
)
9414 c_parser_error (parser
, "%<#pragma omp taskyield%> may only be "
9415 "used in compound statements");
9418 c_parser_omp_taskyield (parser
);
9421 case PRAGMA_OMP_CANCEL
:
9422 if (context
!= pragma_compound
)
9424 if (context
== pragma_stmt
)
9425 c_parser_error (parser
, "%<#pragma omp cancel%> may only be "
9426 "used in compound statements");
9429 c_parser_omp_cancel (parser
);
9432 case PRAGMA_OMP_CANCELLATION_POINT
:
9433 if (context
!= pragma_compound
)
9435 if (context
== pragma_stmt
)
9436 c_parser_error (parser
, "%<#pragma omp cancellation point%> may "
9437 "only be used in compound statements");
9440 c_parser_omp_cancellation_point (parser
);
9443 case PRAGMA_OMP_THREADPRIVATE
:
9444 c_parser_omp_threadprivate (parser
);
9447 case PRAGMA_OMP_TARGET
:
9448 return c_parser_omp_target (parser
, context
);
9450 case PRAGMA_OMP_END_DECLARE_TARGET
:
9451 c_parser_omp_end_declare_target (parser
);
9454 case PRAGMA_OMP_SECTION
:
9455 error_at (c_parser_peek_token (parser
)->location
,
9456 "%<#pragma omp section%> may only be used in "
9457 "%<#pragma omp sections%> construct");
9458 c_parser_skip_until_found (parser
, CPP_PRAGMA_EOL
, NULL
);
9461 case PRAGMA_OMP_DECLARE_REDUCTION
:
9462 c_parser_omp_declare (parser
, context
);
9465 c_parser_consume_pragma (parser
);
9466 c_parser_skip_to_pragma_eol (parser
);
9467 if (!c_parser_next_token_is_keyword (parser
, RID_FOR
)
9468 && !c_parser_next_token_is_keyword (parser
, RID_WHILE
)
9469 && !c_parser_next_token_is_keyword (parser
, RID_DO
))
9471 c_parser_error (parser
, "for, while or do statement expected");
9474 if (c_parser_next_token_is_keyword (parser
, RID_FOR
))
9475 c_parser_for_statement (parser
, true);
9476 else if (c_parser_next_token_is_keyword (parser
, RID_WHILE
))
9477 c_parser_while_statement (parser
, true);
9479 c_parser_do_statement (parser
, true);
9482 case PRAGMA_GCC_PCH_PREPROCESS
:
9483 c_parser_error (parser
, "%<#pragma GCC pch_preprocess%> must be first");
9484 c_parser_skip_until_found (parser
, CPP_PRAGMA_EOL
, NULL
);
9487 case PRAGMA_CILK_SIMD
:
9488 if (!c_parser_cilk_verify_simd (parser
, context
))
9490 c_parser_consume_pragma (parser
);
9491 c_parser_cilk_simd (parser
);
9495 if (id
< PRAGMA_FIRST_EXTERNAL
)
9497 if (context
!= pragma_stmt
&& context
!= pragma_compound
)
9500 c_parser_error (parser
, "expected declaration specifiers");
9501 c_parser_skip_until_found (parser
, CPP_PRAGMA_EOL
, NULL
);
9504 c_parser_omp_construct (parser
);
9510 c_parser_consume_pragma (parser
);
9511 c_invoke_pragma_handler (id
);
9513 /* Skip to EOL, but suppress any error message. Those will have been
9514 generated by the handler routine through calling error, as opposed
9515 to calling c_parser_error. */
9516 parser
->error
= true;
9517 c_parser_skip_to_pragma_eol (parser
);
9522 /* The interface the pragma parsers have to the lexer. */
9525 pragma_lex (tree
*value
)
9527 c_token
*tok
= c_parser_peek_token (the_parser
);
9528 enum cpp_ttype ret
= tok
->type
;
9530 *value
= tok
->value
;
9531 if (ret
== CPP_PRAGMA_EOL
|| ret
== CPP_EOF
)
9535 if (ret
== CPP_KEYWORD
)
9537 c_parser_consume_token (the_parser
);
9544 c_parser_pragma_pch_preprocess (c_parser
*parser
)
9548 c_parser_consume_pragma (parser
);
9549 if (c_parser_next_token_is (parser
, CPP_STRING
))
9551 name
= c_parser_peek_token (parser
)->value
;
9552 c_parser_consume_token (parser
);
9555 c_parser_error (parser
, "expected string literal");
9556 c_parser_skip_to_pragma_eol (parser
);
9559 c_common_pch_pragma (parse_in
, TREE_STRING_POINTER (name
));
9562 /* OpenMP 2.5 / 3.0 / 3.1 / 4.0 parsing routines. */
9564 /* Returns name of the next clause.
9565 If the clause is not recognized PRAGMA_OMP_CLAUSE_NONE is returned and
9566 the token is not consumed. Otherwise appropriate pragma_omp_clause is
9567 returned and the token is consumed. */
9569 static pragma_omp_clause
9570 c_parser_omp_clause_name (c_parser
*parser
)
9572 pragma_omp_clause result
= PRAGMA_OMP_CLAUSE_NONE
;
9574 if (c_parser_next_token_is_keyword (parser
, RID_IF
))
9575 result
= PRAGMA_OMP_CLAUSE_IF
;
9576 else if (c_parser_next_token_is_keyword (parser
, RID_DEFAULT
))
9577 result
= PRAGMA_OMP_CLAUSE_DEFAULT
;
9578 else if (c_parser_next_token_is_keyword (parser
, RID_FOR
))
9579 result
= PRAGMA_OMP_CLAUSE_FOR
;
9580 else if (c_parser_next_token_is (parser
, CPP_NAME
))
9582 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
9587 if (!strcmp ("aligned", p
))
9588 result
= PRAGMA_OMP_CLAUSE_ALIGNED
;
9591 if (!strcmp ("collapse", p
))
9592 result
= PRAGMA_OMP_CLAUSE_COLLAPSE
;
9593 else if (!strcmp ("copyin", p
))
9594 result
= PRAGMA_OMP_CLAUSE_COPYIN
;
9595 else if (!strcmp ("copyprivate", p
))
9596 result
= PRAGMA_OMP_CLAUSE_COPYPRIVATE
;
9599 if (!strcmp ("depend", p
))
9600 result
= PRAGMA_OMP_CLAUSE_DEPEND
;
9601 else if (!strcmp ("device", p
))
9602 result
= PRAGMA_OMP_CLAUSE_DEVICE
;
9603 else if (!strcmp ("dist_schedule", p
))
9604 result
= PRAGMA_OMP_CLAUSE_DIST_SCHEDULE
;
9607 if (!strcmp ("final", p
))
9608 result
= PRAGMA_OMP_CLAUSE_FINAL
;
9609 else if (!strcmp ("firstprivate", p
))
9610 result
= PRAGMA_OMP_CLAUSE_FIRSTPRIVATE
;
9611 else if (!strcmp ("from", p
))
9612 result
= PRAGMA_OMP_CLAUSE_FROM
;
9615 if (!strcmp ("inbranch", p
))
9616 result
= PRAGMA_OMP_CLAUSE_INBRANCH
;
9619 if (!strcmp ("lastprivate", p
))
9620 result
= PRAGMA_OMP_CLAUSE_LASTPRIVATE
;
9621 else if (!strcmp ("linear", p
))
9622 result
= PRAGMA_OMP_CLAUSE_LINEAR
;
9625 if (!strcmp ("map", p
))
9626 result
= PRAGMA_OMP_CLAUSE_MAP
;
9627 else if (!strcmp ("mergeable", p
))
9628 result
= PRAGMA_OMP_CLAUSE_MERGEABLE
;
9629 else if (flag_enable_cilkplus
&& !strcmp ("mask", p
))
9630 result
= PRAGMA_CILK_CLAUSE_MASK
;
9633 if (!strcmp ("notinbranch", p
))
9634 result
= PRAGMA_OMP_CLAUSE_NOTINBRANCH
;
9635 else if (!strcmp ("nowait", p
))
9636 result
= PRAGMA_OMP_CLAUSE_NOWAIT
;
9637 else if (!strcmp ("num_teams", p
))
9638 result
= PRAGMA_OMP_CLAUSE_NUM_TEAMS
;
9639 else if (!strcmp ("num_threads", p
))
9640 result
= PRAGMA_OMP_CLAUSE_NUM_THREADS
;
9641 else if (flag_enable_cilkplus
&& !strcmp ("nomask", p
))
9642 result
= PRAGMA_CILK_CLAUSE_NOMASK
;
9645 if (!strcmp ("ordered", p
))
9646 result
= PRAGMA_OMP_CLAUSE_ORDERED
;
9649 if (!strcmp ("parallel", p
))
9650 result
= PRAGMA_OMP_CLAUSE_PARALLEL
;
9651 else if (!strcmp ("private", p
))
9652 result
= PRAGMA_OMP_CLAUSE_PRIVATE
;
9653 else if (!strcmp ("proc_bind", p
))
9654 result
= PRAGMA_OMP_CLAUSE_PROC_BIND
;
9657 if (!strcmp ("reduction", p
))
9658 result
= PRAGMA_OMP_CLAUSE_REDUCTION
;
9661 if (!strcmp ("safelen", p
))
9662 result
= PRAGMA_OMP_CLAUSE_SAFELEN
;
9663 else if (!strcmp ("schedule", p
))
9664 result
= PRAGMA_OMP_CLAUSE_SCHEDULE
;
9665 else if (!strcmp ("sections", p
))
9666 result
= PRAGMA_OMP_CLAUSE_SECTIONS
;
9667 else if (!strcmp ("shared", p
))
9668 result
= PRAGMA_OMP_CLAUSE_SHARED
;
9669 else if (!strcmp ("simdlen", p
))
9670 result
= PRAGMA_OMP_CLAUSE_SIMDLEN
;
9673 if (!strcmp ("taskgroup", p
))
9674 result
= PRAGMA_OMP_CLAUSE_TASKGROUP
;
9675 else if (!strcmp ("thread_limit", p
))
9676 result
= PRAGMA_OMP_CLAUSE_THREAD_LIMIT
;
9677 else if (!strcmp ("to", p
))
9678 result
= PRAGMA_OMP_CLAUSE_TO
;
9681 if (!strcmp ("uniform", p
))
9682 result
= PRAGMA_OMP_CLAUSE_UNIFORM
;
9683 else if (!strcmp ("untied", p
))
9684 result
= PRAGMA_OMP_CLAUSE_UNTIED
;
9687 if (flag_enable_cilkplus
&& !strcmp ("vectorlength", p
))
9688 result
= PRAGMA_CILK_CLAUSE_VECTORLENGTH
;
9693 if (result
!= PRAGMA_OMP_CLAUSE_NONE
)
9694 c_parser_consume_token (parser
);
9699 /* Validate that a clause of the given type does not already exist. */
9702 check_no_duplicate_clause (tree clauses
, enum omp_clause_code code
,
9707 for (c
= clauses
; c
; c
= OMP_CLAUSE_CHAIN (c
))
9708 if (OMP_CLAUSE_CODE (c
) == code
)
9710 location_t loc
= OMP_CLAUSE_LOCATION (c
);
9711 error_at (loc
, "too many %qs clauses", name
);
9719 variable-list , identifier
9721 If KIND is nonzero, create the appropriate node and install the
9722 decl in OMP_CLAUSE_DECL and add the node to the head of the list.
9723 If KIND is nonzero, CLAUSE_LOC is the location of the clause.
9725 If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE;
9726 return the list created. */
9729 c_parser_omp_variable_list (c_parser
*parser
,
9730 location_t clause_loc
,
9731 enum omp_clause_code kind
, tree list
)
9733 if (c_parser_next_token_is_not (parser
, CPP_NAME
)
9734 || c_parser_peek_token (parser
)->id_kind
!= C_ID_ID
)
9735 c_parser_error (parser
, "expected identifier");
9737 while (c_parser_next_token_is (parser
, CPP_NAME
)
9738 && c_parser_peek_token (parser
)->id_kind
== C_ID_ID
)
9740 tree t
= lookup_name (c_parser_peek_token (parser
)->value
);
9744 undeclared_variable (c_parser_peek_token (parser
)->location
,
9745 c_parser_peek_token (parser
)->value
);
9746 t
= error_mark_node
;
9749 c_parser_consume_token (parser
);
9751 if (t
== error_mark_node
)
9757 case OMP_CLAUSE_MAP
:
9758 case OMP_CLAUSE_FROM
:
9760 case OMP_CLAUSE_DEPEND
:
9761 while (c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
))
9763 tree low_bound
= NULL_TREE
, length
= NULL_TREE
;
9765 c_parser_consume_token (parser
);
9766 if (!c_parser_next_token_is (parser
, CPP_COLON
))
9767 low_bound
= c_parser_expression (parser
).value
;
9768 if (c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
9769 length
= integer_one_node
;
9773 if (!c_parser_require (parser
, CPP_COLON
,
9776 t
= error_mark_node
;
9779 if (!c_parser_next_token_is (parser
, CPP_CLOSE_SQUARE
))
9780 length
= c_parser_expression (parser
).value
;
9782 /* Look for the closing `]'. */
9783 if (!c_parser_require (parser
, CPP_CLOSE_SQUARE
,
9786 t
= error_mark_node
;
9789 t
= tree_cons (low_bound
, length
, t
);
9796 if (t
!= error_mark_node
)
9798 tree u
= build_omp_clause (clause_loc
, kind
);
9799 OMP_CLAUSE_DECL (u
) = t
;
9800 OMP_CLAUSE_CHAIN (u
) = list
;
9805 list
= tree_cons (t
, NULL_TREE
, list
);
9807 if (c_parser_next_token_is_not (parser
, CPP_COMMA
))
9810 c_parser_consume_token (parser
);
9816 /* Similarly, but expect leading and trailing parenthesis. This is a very
9817 common case for omp clauses. */
9820 c_parser_omp_var_list_parens (c_parser
*parser
, enum omp_clause_code kind
,
9823 /* The clauses location. */
9824 location_t loc
= c_parser_peek_token (parser
)->location
;
9826 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
9828 list
= c_parser_omp_variable_list (parser
, loc
, kind
, list
);
9829 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
9835 collapse ( constant-expression ) */
9838 c_parser_omp_clause_collapse (c_parser
*parser
, tree list
)
9840 tree c
, num
= error_mark_node
;
9844 check_no_duplicate_clause (list
, OMP_CLAUSE_COLLAPSE
, "collapse");
9846 loc
= c_parser_peek_token (parser
)->location
;
9847 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
9849 num
= c_parser_expr_no_commas (parser
, NULL
).value
;
9850 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
9852 if (num
== error_mark_node
)
9854 mark_exp_read (num
);
9855 num
= c_fully_fold (num
, false, NULL
);
9856 if (!INTEGRAL_TYPE_P (TREE_TYPE (num
))
9857 || !tree_fits_shwi_p (num
)
9858 || (n
= tree_to_shwi (num
)) <= 0
9862 "collapse argument needs positive constant integer expression");
9865 c
= build_omp_clause (loc
, OMP_CLAUSE_COLLAPSE
);
9866 OMP_CLAUSE_COLLAPSE_EXPR (c
) = num
;
9867 OMP_CLAUSE_CHAIN (c
) = list
;
9872 copyin ( variable-list ) */
9875 c_parser_omp_clause_copyin (c_parser
*parser
, tree list
)
9877 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_COPYIN
, list
);
9881 copyprivate ( variable-list ) */
9884 c_parser_omp_clause_copyprivate (c_parser
*parser
, tree list
)
9886 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_COPYPRIVATE
, list
);
9890 default ( shared | none ) */
9893 c_parser_omp_clause_default (c_parser
*parser
, tree list
)
9895 enum omp_clause_default_kind kind
= OMP_CLAUSE_DEFAULT_UNSPECIFIED
;
9896 location_t loc
= c_parser_peek_token (parser
)->location
;
9899 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
9901 if (c_parser_next_token_is (parser
, CPP_NAME
))
9903 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
9908 if (strcmp ("none", p
) != 0)
9910 kind
= OMP_CLAUSE_DEFAULT_NONE
;
9914 if (strcmp ("shared", p
) != 0)
9916 kind
= OMP_CLAUSE_DEFAULT_SHARED
;
9923 c_parser_consume_token (parser
);
9928 c_parser_error (parser
, "expected %<none%> or %<shared%>");
9930 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
9932 if (kind
== OMP_CLAUSE_DEFAULT_UNSPECIFIED
)
9935 check_no_duplicate_clause (list
, OMP_CLAUSE_DEFAULT
, "default");
9936 c
= build_omp_clause (loc
, OMP_CLAUSE_DEFAULT
);
9937 OMP_CLAUSE_CHAIN (c
) = list
;
9938 OMP_CLAUSE_DEFAULT_KIND (c
) = kind
;
9944 firstprivate ( variable-list ) */
9947 c_parser_omp_clause_firstprivate (c_parser
*parser
, tree list
)
9949 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_FIRSTPRIVATE
, list
);
9953 final ( expression ) */
9956 c_parser_omp_clause_final (c_parser
*parser
, tree list
)
9958 location_t loc
= c_parser_peek_token (parser
)->location
;
9959 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
9961 tree t
= c_parser_paren_condition (parser
);
9964 check_no_duplicate_clause (list
, OMP_CLAUSE_FINAL
, "final");
9966 c
= build_omp_clause (loc
, OMP_CLAUSE_FINAL
);
9967 OMP_CLAUSE_FINAL_EXPR (c
) = t
;
9968 OMP_CLAUSE_CHAIN (c
) = list
;
9972 c_parser_error (parser
, "expected %<(%>");
9978 if ( expression ) */
9981 c_parser_omp_clause_if (c_parser
*parser
, tree list
)
9983 location_t loc
= c_parser_peek_token (parser
)->location
;
9984 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
9986 tree t
= c_parser_paren_condition (parser
);
9989 check_no_duplicate_clause (list
, OMP_CLAUSE_IF
, "if");
9991 c
= build_omp_clause (loc
, OMP_CLAUSE_IF
);
9992 OMP_CLAUSE_IF_EXPR (c
) = t
;
9993 OMP_CLAUSE_CHAIN (c
) = list
;
9997 c_parser_error (parser
, "expected %<(%>");
10003 lastprivate ( variable-list ) */
10006 c_parser_omp_clause_lastprivate (c_parser
*parser
, tree list
)
10008 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_LASTPRIVATE
, list
);
10015 c_parser_omp_clause_mergeable (c_parser
*parser ATTRIBUTE_UNUSED
, tree list
)
10019 /* FIXME: Should we allow duplicates? */
10020 check_no_duplicate_clause (list
, OMP_CLAUSE_MERGEABLE
, "mergeable");
10022 c
= build_omp_clause (c_parser_peek_token (parser
)->location
,
10023 OMP_CLAUSE_MERGEABLE
);
10024 OMP_CLAUSE_CHAIN (c
) = list
;
10033 c_parser_omp_clause_nowait (c_parser
*parser ATTRIBUTE_UNUSED
, tree list
)
10036 location_t loc
= c_parser_peek_token (parser
)->location
;
10038 check_no_duplicate_clause (list
, OMP_CLAUSE_NOWAIT
, "nowait");
10040 c
= build_omp_clause (loc
, OMP_CLAUSE_NOWAIT
);
10041 OMP_CLAUSE_CHAIN (c
) = list
;
10046 num_threads ( expression ) */
10049 c_parser_omp_clause_num_threads (c_parser
*parser
, tree list
)
10051 location_t num_threads_loc
= c_parser_peek_token (parser
)->location
;
10052 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10054 location_t expr_loc
= c_parser_peek_token (parser
)->location
;
10055 tree c
, t
= c_parser_expression (parser
).value
;
10057 t
= c_fully_fold (t
, false, NULL
);
10059 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10061 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
)))
10063 c_parser_error (parser
, "expected integer expression");
10067 /* Attempt to statically determine when the number isn't positive. */
10068 c
= fold_build2_loc (expr_loc
, LE_EXPR
, boolean_type_node
, t
,
10069 build_int_cst (TREE_TYPE (t
), 0));
10070 if (CAN_HAVE_LOCATION_P (c
))
10071 SET_EXPR_LOCATION (c
, expr_loc
);
10072 if (c
== boolean_true_node
)
10074 warning_at (expr_loc
, 0,
10075 "%<num_threads%> value must be positive");
10076 t
= integer_one_node
;
10079 check_no_duplicate_clause (list
, OMP_CLAUSE_NUM_THREADS
, "num_threads");
10081 c
= build_omp_clause (num_threads_loc
, OMP_CLAUSE_NUM_THREADS
);
10082 OMP_CLAUSE_NUM_THREADS_EXPR (c
) = t
;
10083 OMP_CLAUSE_CHAIN (c
) = list
;
10094 c_parser_omp_clause_ordered (c_parser
*parser
, tree list
)
10098 check_no_duplicate_clause (list
, OMP_CLAUSE_ORDERED
, "ordered");
10100 c
= build_omp_clause (c_parser_peek_token (parser
)->location
,
10101 OMP_CLAUSE_ORDERED
);
10102 OMP_CLAUSE_CHAIN (c
) = list
;
10108 private ( variable-list ) */
10111 c_parser_omp_clause_private (c_parser
*parser
, tree list
)
10113 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_PRIVATE
, list
);
10117 reduction ( reduction-operator : variable-list )
10119 reduction-operator:
10120 One of: + * - & ^ | && ||
10124 reduction-operator:
10125 One of: + * - & ^ | && || max min
10129 reduction-operator:
10130 One of: + * - & ^ | && ||
10134 c_parser_omp_clause_reduction (c_parser
*parser
, tree list
)
10136 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10137 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10139 enum tree_code code
= ERROR_MARK
;
10140 tree reduc_id
= NULL_TREE
;
10142 switch (c_parser_peek_token (parser
)->type
)
10154 code
= BIT_AND_EXPR
;
10157 code
= BIT_XOR_EXPR
;
10160 code
= BIT_IOR_EXPR
;
10163 code
= TRUTH_ANDIF_EXPR
;
10166 code
= TRUTH_ORIF_EXPR
;
10171 = IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
10172 if (strcmp (p
, "min") == 0)
10177 if (strcmp (p
, "max") == 0)
10182 reduc_id
= c_parser_peek_token (parser
)->value
;
10186 c_parser_error (parser
,
10187 "expected %<+%>, %<*%>, %<-%>, %<&%>, "
10188 "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>");
10189 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, 0);
10192 c_parser_consume_token (parser
);
10193 reduc_id
= c_omp_reduction_id (code
, reduc_id
);
10194 if (c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
10198 nl
= c_parser_omp_variable_list (parser
, clause_loc
,
10199 OMP_CLAUSE_REDUCTION
, list
);
10200 for (c
= nl
; c
!= list
; c
= OMP_CLAUSE_CHAIN (c
))
10202 tree type
= TREE_TYPE (OMP_CLAUSE_DECL (c
));
10203 OMP_CLAUSE_REDUCTION_CODE (c
) = code
;
10204 if (code
== ERROR_MARK
10205 || !(INTEGRAL_TYPE_P (type
)
10206 || TREE_CODE (type
) == REAL_TYPE
10207 || TREE_CODE (type
) == COMPLEX_TYPE
))
10208 OMP_CLAUSE_REDUCTION_PLACEHOLDER (c
)
10209 = c_omp_reduction_lookup (reduc_id
,
10210 TYPE_MAIN_VARIANT (type
));
10215 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10221 schedule ( schedule-kind )
10222 schedule ( schedule-kind , expression )
10225 static | dynamic | guided | runtime | auto
10229 c_parser_omp_clause_schedule (c_parser
*parser
, tree list
)
10232 location_t loc
= c_parser_peek_token (parser
)->location
;
10234 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10237 c
= build_omp_clause (loc
, OMP_CLAUSE_SCHEDULE
);
10239 if (c_parser_next_token_is (parser
, CPP_NAME
))
10241 tree kind
= c_parser_peek_token (parser
)->value
;
10242 const char *p
= IDENTIFIER_POINTER (kind
);
10247 if (strcmp ("dynamic", p
) != 0)
10249 OMP_CLAUSE_SCHEDULE_KIND (c
) = OMP_CLAUSE_SCHEDULE_DYNAMIC
;
10253 if (strcmp ("guided", p
) != 0)
10255 OMP_CLAUSE_SCHEDULE_KIND (c
) = OMP_CLAUSE_SCHEDULE_GUIDED
;
10259 if (strcmp ("runtime", p
) != 0)
10261 OMP_CLAUSE_SCHEDULE_KIND (c
) = OMP_CLAUSE_SCHEDULE_RUNTIME
;
10268 else if (c_parser_next_token_is_keyword (parser
, RID_STATIC
))
10269 OMP_CLAUSE_SCHEDULE_KIND (c
) = OMP_CLAUSE_SCHEDULE_STATIC
;
10270 else if (c_parser_next_token_is_keyword (parser
, RID_AUTO
))
10271 OMP_CLAUSE_SCHEDULE_KIND (c
) = OMP_CLAUSE_SCHEDULE_AUTO
;
10275 c_parser_consume_token (parser
);
10276 if (c_parser_next_token_is (parser
, CPP_COMMA
))
10279 c_parser_consume_token (parser
);
10281 here
= c_parser_peek_token (parser
)->location
;
10282 t
= c_parser_expr_no_commas (parser
, NULL
).value
;
10284 t
= c_fully_fold (t
, false, NULL
);
10286 if (OMP_CLAUSE_SCHEDULE_KIND (c
) == OMP_CLAUSE_SCHEDULE_RUNTIME
)
10287 error_at (here
, "schedule %<runtime%> does not take "
10288 "a %<chunk_size%> parameter");
10289 else if (OMP_CLAUSE_SCHEDULE_KIND (c
) == OMP_CLAUSE_SCHEDULE_AUTO
)
10291 "schedule %<auto%> does not take "
10292 "a %<chunk_size%> parameter");
10293 else if (TREE_CODE (TREE_TYPE (t
)) == INTEGER_TYPE
)
10294 OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c
) = t
;
10296 c_parser_error (parser
, "expected integer expression");
10298 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10301 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
10302 "expected %<,%> or %<)%>");
10304 check_no_duplicate_clause (list
, OMP_CLAUSE_SCHEDULE
, "schedule");
10305 OMP_CLAUSE_CHAIN (c
) = list
;
10309 c_parser_error (parser
, "invalid schedule kind");
10310 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, 0);
10315 shared ( variable-list ) */
10318 c_parser_omp_clause_shared (c_parser
*parser
, tree list
)
10320 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_SHARED
, list
);
10327 c_parser_omp_clause_untied (c_parser
*parser ATTRIBUTE_UNUSED
, tree list
)
10331 /* FIXME: Should we allow duplicates? */
10332 check_no_duplicate_clause (list
, OMP_CLAUSE_UNTIED
, "untied");
10334 c
= build_omp_clause (c_parser_peek_token (parser
)->location
,
10335 OMP_CLAUSE_UNTIED
);
10336 OMP_CLAUSE_CHAIN (c
) = list
;
10346 c_parser_omp_clause_branch (c_parser
*parser ATTRIBUTE_UNUSED
,
10347 enum omp_clause_code code
, tree list
)
10349 check_no_duplicate_clause (list
, code
, omp_clause_code_name
[code
]);
10351 tree c
= build_omp_clause (c_parser_peek_token (parser
)->location
, code
);
10352 OMP_CLAUSE_CHAIN (c
) = list
;
10364 c_parser_omp_clause_cancelkind (c_parser
*parser ATTRIBUTE_UNUSED
,
10365 enum omp_clause_code code
, tree list
)
10367 tree c
= build_omp_clause (c_parser_peek_token (parser
)->location
, code
);
10368 OMP_CLAUSE_CHAIN (c
) = list
;
10374 num_teams ( expression ) */
10377 c_parser_omp_clause_num_teams (c_parser
*parser
, tree list
)
10379 location_t num_teams_loc
= c_parser_peek_token (parser
)->location
;
10380 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10382 location_t expr_loc
= c_parser_peek_token (parser
)->location
;
10383 tree c
, t
= c_parser_expression (parser
).value
;
10385 t
= c_fully_fold (t
, false, NULL
);
10387 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10389 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
)))
10391 c_parser_error (parser
, "expected integer expression");
10395 /* Attempt to statically determine when the number isn't positive. */
10396 c
= fold_build2_loc (expr_loc
, LE_EXPR
, boolean_type_node
, t
,
10397 build_int_cst (TREE_TYPE (t
), 0));
10398 if (CAN_HAVE_LOCATION_P (c
))
10399 SET_EXPR_LOCATION (c
, expr_loc
);
10400 if (c
== boolean_true_node
)
10402 warning_at (expr_loc
, 0, "%<num_teams%> value must be positive");
10403 t
= integer_one_node
;
10406 check_no_duplicate_clause (list
, OMP_CLAUSE_NUM_TEAMS
, "num_teams");
10408 c
= build_omp_clause (num_teams_loc
, OMP_CLAUSE_NUM_TEAMS
);
10409 OMP_CLAUSE_NUM_TEAMS_EXPR (c
) = t
;
10410 OMP_CLAUSE_CHAIN (c
) = list
;
10418 thread_limit ( expression ) */
10421 c_parser_omp_clause_thread_limit (c_parser
*parser
, tree list
)
10423 location_t num_teams_loc
= c_parser_peek_token (parser
)->location
;
10424 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10426 location_t expr_loc
= c_parser_peek_token (parser
)->location
;
10427 tree c
, t
= c_parser_expression (parser
).value
;
10429 t
= c_fully_fold (t
, false, NULL
);
10431 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10433 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
)))
10435 c_parser_error (parser
, "expected integer expression");
10439 /* Attempt to statically determine when the number isn't positive. */
10440 c
= fold_build2_loc (expr_loc
, LE_EXPR
, boolean_type_node
, t
,
10441 build_int_cst (TREE_TYPE (t
), 0));
10442 if (CAN_HAVE_LOCATION_P (c
))
10443 SET_EXPR_LOCATION (c
, expr_loc
);
10444 if (c
== boolean_true_node
)
10446 warning_at (expr_loc
, 0, "%<thread_limit%> value must be positive");
10447 t
= integer_one_node
;
10450 check_no_duplicate_clause (list
, OMP_CLAUSE_THREAD_LIMIT
,
10453 c
= build_omp_clause (num_teams_loc
, OMP_CLAUSE_THREAD_LIMIT
);
10454 OMP_CLAUSE_THREAD_LIMIT_EXPR (c
) = t
;
10455 OMP_CLAUSE_CHAIN (c
) = list
;
10463 aligned ( variable-list )
10464 aligned ( variable-list : constant-expression ) */
10467 c_parser_omp_clause_aligned (c_parser
*parser
, tree list
)
10469 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10472 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10475 nl
= c_parser_omp_variable_list (parser
, clause_loc
,
10476 OMP_CLAUSE_ALIGNED
, list
);
10478 if (c_parser_next_token_is (parser
, CPP_COLON
))
10480 c_parser_consume_token (parser
);
10481 tree alignment
= c_parser_expr_no_commas (parser
, NULL
).value
;
10482 mark_exp_read (alignment
);
10483 alignment
= c_fully_fold (alignment
, false, NULL
);
10484 if (!INTEGRAL_TYPE_P (TREE_TYPE (alignment
))
10485 && TREE_CODE (alignment
) != INTEGER_CST
10486 && tree_int_cst_sgn (alignment
) != 1)
10488 error_at (clause_loc
, "%<aligned%> clause alignment expression must "
10489 "be positive constant integer expression");
10490 alignment
= NULL_TREE
;
10493 for (c
= nl
; c
!= list
; c
= OMP_CLAUSE_CHAIN (c
))
10494 OMP_CLAUSE_ALIGNED_ALIGNMENT (c
) = alignment
;
10497 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10502 linear ( variable-list )
10503 linear ( variable-list : expression ) */
10506 c_parser_omp_clause_linear (c_parser
*parser
, tree list
, bool is_cilk_simd_fn
)
10508 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10511 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10514 nl
= c_parser_omp_variable_list (parser
, clause_loc
,
10515 OMP_CLAUSE_LINEAR
, list
);
10517 if (c_parser_next_token_is (parser
, CPP_COLON
))
10519 c_parser_consume_token (parser
);
10520 step
= c_parser_expression (parser
).value
;
10521 mark_exp_read (step
);
10522 step
= c_fully_fold (step
, false, NULL
);
10523 if (is_cilk_simd_fn
&& TREE_CODE (step
) == PARM_DECL
)
10525 sorry ("using parameters for %<linear%> step is not supported yet");
10526 step
= integer_one_node
;
10528 if (!INTEGRAL_TYPE_P (TREE_TYPE (step
)))
10530 error_at (clause_loc
, "%<linear%> clause step expression must "
10532 step
= integer_one_node
;
10537 step
= integer_one_node
;
10539 for (c
= nl
; c
!= list
; c
= OMP_CLAUSE_CHAIN (c
))
10541 OMP_CLAUSE_LINEAR_STEP (c
) = step
;
10544 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10549 safelen ( constant-expression ) */
10552 c_parser_omp_clause_safelen (c_parser
*parser
, tree list
)
10554 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10557 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10560 t
= c_parser_expr_no_commas (parser
, NULL
).value
;
10562 t
= c_fully_fold (t
, false, NULL
);
10563 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
))
10564 && TREE_CODE (t
) != INTEGER_CST
10565 && tree_int_cst_sgn (t
) != 1)
10567 error_at (clause_loc
, "%<safelen%> clause expression must "
10568 "be positive constant integer expression");
10572 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10573 if (t
== NULL_TREE
|| t
== error_mark_node
)
10576 check_no_duplicate_clause (list
, OMP_CLAUSE_SAFELEN
, "safelen");
10578 c
= build_omp_clause (clause_loc
, OMP_CLAUSE_SAFELEN
);
10579 OMP_CLAUSE_SAFELEN_EXPR (c
) = t
;
10580 OMP_CLAUSE_CHAIN (c
) = list
;
10585 simdlen ( constant-expression ) */
10588 c_parser_omp_clause_simdlen (c_parser
*parser
, tree list
)
10590 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10593 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10596 t
= c_parser_expr_no_commas (parser
, NULL
).value
;
10598 t
= c_fully_fold (t
, false, NULL
);
10599 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
))
10600 && TREE_CODE (t
) != INTEGER_CST
10601 && tree_int_cst_sgn (t
) != 1)
10603 error_at (clause_loc
, "%<simdlen%> clause expression must "
10604 "be positive constant integer expression");
10608 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10609 if (t
== NULL_TREE
|| t
== error_mark_node
)
10612 check_no_duplicate_clause (list
, OMP_CLAUSE_SIMDLEN
, "simdlen");
10614 c
= build_omp_clause (clause_loc
, OMP_CLAUSE_SIMDLEN
);
10615 OMP_CLAUSE_SIMDLEN_EXPR (c
) = t
;
10616 OMP_CLAUSE_CHAIN (c
) = list
;
10621 depend ( depend-kind: variable-list )
10624 in | out | inout */
10627 c_parser_omp_clause_depend (c_parser
*parser
, tree list
)
10629 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10630 enum omp_clause_depend_kind kind
= OMP_CLAUSE_DEPEND_INOUT
;
10633 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10636 if (c_parser_next_token_is (parser
, CPP_NAME
))
10638 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
10639 if (strcmp ("in", p
) == 0)
10640 kind
= OMP_CLAUSE_DEPEND_IN
;
10641 else if (strcmp ("inout", p
) == 0)
10642 kind
= OMP_CLAUSE_DEPEND_INOUT
;
10643 else if (strcmp ("out", p
) == 0)
10644 kind
= OMP_CLAUSE_DEPEND_OUT
;
10651 c_parser_consume_token (parser
);
10652 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
10655 nl
= c_parser_omp_variable_list (parser
, clause_loc
,
10656 OMP_CLAUSE_DEPEND
, list
);
10658 for (c
= nl
; c
!= list
; c
= OMP_CLAUSE_CHAIN (c
))
10659 OMP_CLAUSE_DEPEND_KIND (c
) = kind
;
10661 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10665 c_parser_error (parser
, "invalid depend kind");
10667 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10672 map ( map-kind: variable-list )
10673 map ( variable-list )
10676 alloc | to | from | tofrom */
10679 c_parser_omp_clause_map (c_parser
*parser
, tree list
)
10681 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10682 enum omp_clause_map_kind kind
= OMP_CLAUSE_MAP_TOFROM
;
10685 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10688 if (c_parser_next_token_is (parser
, CPP_NAME
)
10689 && c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
)
10691 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
10692 if (strcmp ("alloc", p
) == 0)
10693 kind
= OMP_CLAUSE_MAP_ALLOC
;
10694 else if (strcmp ("to", p
) == 0)
10695 kind
= OMP_CLAUSE_MAP_TO
;
10696 else if (strcmp ("from", p
) == 0)
10697 kind
= OMP_CLAUSE_MAP_FROM
;
10698 else if (strcmp ("tofrom", p
) == 0)
10699 kind
= OMP_CLAUSE_MAP_TOFROM
;
10702 c_parser_error (parser
, "invalid map kind");
10703 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
10707 c_parser_consume_token (parser
);
10708 c_parser_consume_token (parser
);
10711 nl
= c_parser_omp_variable_list (parser
, clause_loc
, OMP_CLAUSE_MAP
, list
);
10713 for (c
= nl
; c
!= list
; c
= OMP_CLAUSE_CHAIN (c
))
10714 OMP_CLAUSE_MAP_KIND (c
) = kind
;
10716 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10721 device ( expression ) */
10724 c_parser_omp_clause_device (c_parser
*parser
, tree list
)
10726 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10727 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10729 tree c
, t
= c_parser_expr_no_commas (parser
, NULL
).value
;
10731 t
= c_fully_fold (t
, false, NULL
);
10733 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10735 if (!INTEGRAL_TYPE_P (TREE_TYPE (t
)))
10737 c_parser_error (parser
, "expected integer expression");
10741 check_no_duplicate_clause (list
, OMP_CLAUSE_DEVICE
, "device");
10743 c
= build_omp_clause (clause_loc
, OMP_CLAUSE_DEVICE
);
10744 OMP_CLAUSE_DEVICE_ID (c
) = t
;
10745 OMP_CLAUSE_CHAIN (c
) = list
;
10753 dist_schedule ( static )
10754 dist_schedule ( static , expression ) */
10757 c_parser_omp_clause_dist_schedule (c_parser
*parser
, tree list
)
10759 tree c
, t
= NULL_TREE
;
10760 location_t loc
= c_parser_peek_token (parser
)->location
;
10762 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10765 if (!c_parser_next_token_is_keyword (parser
, RID_STATIC
))
10767 c_parser_error (parser
, "invalid dist_schedule kind");
10768 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
10773 c_parser_consume_token (parser
);
10774 if (c_parser_next_token_is (parser
, CPP_COMMA
))
10776 c_parser_consume_token (parser
);
10778 t
= c_parser_expr_no_commas (parser
, NULL
).value
;
10780 t
= c_fully_fold (t
, false, NULL
);
10781 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10784 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
10785 "expected %<,%> or %<)%>");
10787 check_no_duplicate_clause (list
, OMP_CLAUSE_SCHEDULE
, "schedule");
10788 if (t
== error_mark_node
)
10791 c
= build_omp_clause (loc
, OMP_CLAUSE_DIST_SCHEDULE
);
10792 OMP_CLAUSE_DIST_SCHEDULE_CHUNK_EXPR (c
) = t
;
10793 OMP_CLAUSE_CHAIN (c
) = list
;
10798 proc_bind ( proc-bind-kind )
10801 master | close | spread */
10804 c_parser_omp_clause_proc_bind (c_parser
*parser
, tree list
)
10806 location_t clause_loc
= c_parser_peek_token (parser
)->location
;
10807 enum omp_clause_proc_bind_kind kind
;
10810 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10813 if (c_parser_next_token_is (parser
, CPP_NAME
))
10815 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
10816 if (strcmp ("master", p
) == 0)
10817 kind
= OMP_CLAUSE_PROC_BIND_MASTER
;
10818 else if (strcmp ("close", p
) == 0)
10819 kind
= OMP_CLAUSE_PROC_BIND_CLOSE
;
10820 else if (strcmp ("spread", p
) == 0)
10821 kind
= OMP_CLAUSE_PROC_BIND_SPREAD
;
10828 c_parser_consume_token (parser
);
10829 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10830 c
= build_omp_clause (clause_loc
, OMP_CLAUSE_PROC_BIND
);
10831 OMP_CLAUSE_PROC_BIND_KIND (c
) = kind
;
10832 OMP_CLAUSE_CHAIN (c
) = list
;
10836 c_parser_error (parser
, "invalid proc_bind kind");
10837 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10842 to ( variable-list ) */
10845 c_parser_omp_clause_to (c_parser
*parser
, tree list
)
10847 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_TO
, list
);
10851 from ( variable-list ) */
10854 c_parser_omp_clause_from (c_parser
*parser
, tree list
)
10856 return c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_FROM
, list
);
10860 uniform ( variable-list ) */
10863 c_parser_omp_clause_uniform (c_parser
*parser
, tree list
)
10865 /* The clauses location. */
10866 location_t loc
= c_parser_peek_token (parser
)->location
;
10868 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
10870 list
= c_parser_omp_variable_list (parser
, loc
, OMP_CLAUSE_UNIFORM
,
10872 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
10877 /* Parse all OpenMP clauses. The set clauses allowed by the directive
10878 is a bitmask in MASK. Return the list of clauses found; the result
10879 of clause default goes in *pdefault. */
10882 c_parser_omp_all_clauses (c_parser
*parser
, omp_clause_mask mask
,
10883 const char *where
, bool finish_p
= true)
10885 tree clauses
= NULL
;
10886 bool first
= true, cilk_simd_fn
= false;
10888 while (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
10891 pragma_omp_clause c_kind
;
10892 const char *c_name
;
10893 tree prev
= clauses
;
10895 if (!first
&& c_parser_next_token_is (parser
, CPP_COMMA
))
10896 c_parser_consume_token (parser
);
10898 here
= c_parser_peek_token (parser
)->location
;
10899 c_kind
= c_parser_omp_clause_name (parser
);
10903 case PRAGMA_OMP_CLAUSE_COLLAPSE
:
10904 clauses
= c_parser_omp_clause_collapse (parser
, clauses
);
10905 c_name
= "collapse";
10907 case PRAGMA_OMP_CLAUSE_COPYIN
:
10908 clauses
= c_parser_omp_clause_copyin (parser
, clauses
);
10911 case PRAGMA_OMP_CLAUSE_COPYPRIVATE
:
10912 clauses
= c_parser_omp_clause_copyprivate (parser
, clauses
);
10913 c_name
= "copyprivate";
10915 case PRAGMA_OMP_CLAUSE_DEFAULT
:
10916 clauses
= c_parser_omp_clause_default (parser
, clauses
);
10917 c_name
= "default";
10919 case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE
:
10920 clauses
= c_parser_omp_clause_firstprivate (parser
, clauses
);
10921 c_name
= "firstprivate";
10923 case PRAGMA_OMP_CLAUSE_FINAL
:
10924 clauses
= c_parser_omp_clause_final (parser
, clauses
);
10927 case PRAGMA_OMP_CLAUSE_IF
:
10928 clauses
= c_parser_omp_clause_if (parser
, clauses
);
10931 case PRAGMA_OMP_CLAUSE_LASTPRIVATE
:
10932 clauses
= c_parser_omp_clause_lastprivate (parser
, clauses
);
10933 c_name
= "lastprivate";
10935 case PRAGMA_OMP_CLAUSE_MERGEABLE
:
10936 clauses
= c_parser_omp_clause_mergeable (parser
, clauses
);
10937 c_name
= "mergeable";
10939 case PRAGMA_OMP_CLAUSE_NOWAIT
:
10940 clauses
= c_parser_omp_clause_nowait (parser
, clauses
);
10943 case PRAGMA_OMP_CLAUSE_NUM_THREADS
:
10944 clauses
= c_parser_omp_clause_num_threads (parser
, clauses
);
10945 c_name
= "num_threads";
10947 case PRAGMA_OMP_CLAUSE_ORDERED
:
10948 clauses
= c_parser_omp_clause_ordered (parser
, clauses
);
10949 c_name
= "ordered";
10951 case PRAGMA_OMP_CLAUSE_PRIVATE
:
10952 clauses
= c_parser_omp_clause_private (parser
, clauses
);
10953 c_name
= "private";
10955 case PRAGMA_OMP_CLAUSE_REDUCTION
:
10956 clauses
= c_parser_omp_clause_reduction (parser
, clauses
);
10957 c_name
= "reduction";
10959 case PRAGMA_OMP_CLAUSE_SCHEDULE
:
10960 clauses
= c_parser_omp_clause_schedule (parser
, clauses
);
10961 c_name
= "schedule";
10963 case PRAGMA_OMP_CLAUSE_SHARED
:
10964 clauses
= c_parser_omp_clause_shared (parser
, clauses
);
10967 case PRAGMA_OMP_CLAUSE_UNTIED
:
10968 clauses
= c_parser_omp_clause_untied (parser
, clauses
);
10971 case PRAGMA_OMP_CLAUSE_INBRANCH
:
10972 case PRAGMA_CILK_CLAUSE_MASK
:
10973 clauses
= c_parser_omp_clause_branch (parser
, OMP_CLAUSE_INBRANCH
,
10975 c_name
= "inbranch";
10977 case PRAGMA_OMP_CLAUSE_NOTINBRANCH
:
10978 case PRAGMA_CILK_CLAUSE_NOMASK
:
10979 clauses
= c_parser_omp_clause_branch (parser
, OMP_CLAUSE_NOTINBRANCH
,
10981 c_name
= "notinbranch";
10983 case PRAGMA_OMP_CLAUSE_PARALLEL
:
10985 = c_parser_omp_clause_cancelkind (parser
, OMP_CLAUSE_PARALLEL
,
10987 c_name
= "parallel";
10991 error_at (here
, "%qs must be the first clause of %qs",
10996 case PRAGMA_OMP_CLAUSE_FOR
:
10998 = c_parser_omp_clause_cancelkind (parser
, OMP_CLAUSE_FOR
,
11002 goto clause_not_first
;
11004 case PRAGMA_OMP_CLAUSE_SECTIONS
:
11006 = c_parser_omp_clause_cancelkind (parser
, OMP_CLAUSE_SECTIONS
,
11008 c_name
= "sections";
11010 goto clause_not_first
;
11012 case PRAGMA_OMP_CLAUSE_TASKGROUP
:
11014 = c_parser_omp_clause_cancelkind (parser
, OMP_CLAUSE_TASKGROUP
,
11016 c_name
= "taskgroup";
11018 goto clause_not_first
;
11020 case PRAGMA_OMP_CLAUSE_TO
:
11021 clauses
= c_parser_omp_clause_to (parser
, clauses
);
11024 case PRAGMA_OMP_CLAUSE_FROM
:
11025 clauses
= c_parser_omp_clause_from (parser
, clauses
);
11028 case PRAGMA_OMP_CLAUSE_UNIFORM
:
11029 clauses
= c_parser_omp_clause_uniform (parser
, clauses
);
11030 c_name
= "uniform";
11032 case PRAGMA_OMP_CLAUSE_NUM_TEAMS
:
11033 clauses
= c_parser_omp_clause_num_teams (parser
, clauses
);
11034 c_name
= "num_teams";
11036 case PRAGMA_OMP_CLAUSE_THREAD_LIMIT
:
11037 clauses
= c_parser_omp_clause_thread_limit (parser
, clauses
);
11038 c_name
= "thread_limit";
11040 case PRAGMA_OMP_CLAUSE_ALIGNED
:
11041 clauses
= c_parser_omp_clause_aligned (parser
, clauses
);
11042 c_name
= "aligned";
11044 case PRAGMA_OMP_CLAUSE_LINEAR
:
11045 if (((mask
>> PRAGMA_CILK_CLAUSE_VECTORLENGTH
) & 1) != 0)
11046 cilk_simd_fn
= true;
11047 clauses
= c_parser_omp_clause_linear (parser
, clauses
, cilk_simd_fn
);
11050 case PRAGMA_OMP_CLAUSE_DEPEND
:
11051 clauses
= c_parser_omp_clause_depend (parser
, clauses
);
11054 case PRAGMA_OMP_CLAUSE_MAP
:
11055 clauses
= c_parser_omp_clause_map (parser
, clauses
);
11058 case PRAGMA_OMP_CLAUSE_DEVICE
:
11059 clauses
= c_parser_omp_clause_device (parser
, clauses
);
11062 case PRAGMA_OMP_CLAUSE_DIST_SCHEDULE
:
11063 clauses
= c_parser_omp_clause_dist_schedule (parser
, clauses
);
11064 c_name
= "dist_schedule";
11066 case PRAGMA_OMP_CLAUSE_PROC_BIND
:
11067 clauses
= c_parser_omp_clause_proc_bind (parser
, clauses
);
11068 c_name
= "proc_bind";
11070 case PRAGMA_OMP_CLAUSE_SAFELEN
:
11071 clauses
= c_parser_omp_clause_safelen (parser
, clauses
);
11072 c_name
= "safelen";
11074 case PRAGMA_CILK_CLAUSE_VECTORLENGTH
:
11075 clauses
= c_parser_cilk_clause_vectorlength (parser
, clauses
, true);
11076 c_name
= "simdlen";
11078 case PRAGMA_OMP_CLAUSE_SIMDLEN
:
11079 clauses
= c_parser_omp_clause_simdlen (parser
, clauses
);
11080 c_name
= "simdlen";
11083 c_parser_error (parser
, "expected %<#pragma omp%> clause");
11089 if (((mask
>> c_kind
) & 1) == 0 && !parser
->error
)
11091 /* Remove the invalid clause(s) from the list to avoid
11092 confusing the rest of the compiler. */
11094 error_at (here
, "%qs is not valid for %qs", c_name
, where
);
11099 c_parser_skip_to_pragma_eol (parser
);
11102 return c_finish_omp_clauses (clauses
);
11111 In practice, we're also interested in adding the statement to an
11112 outer node. So it is convenient if we work around the fact that
11113 c_parser_statement calls add_stmt. */
11116 c_parser_omp_structured_block (c_parser
*parser
)
11118 tree stmt
= push_stmt_list ();
11119 c_parser_statement (parser
);
11120 return pop_stmt_list (stmt
);
11124 # pragma omp atomic new-line
11128 x binop= expr | x++ | ++x | x-- | --x
11130 +, *, -, /, &, ^, |, <<, >>
11132 where x is an lvalue expression with scalar type.
11135 # pragma omp atomic new-line
11138 # pragma omp atomic read new-line
11141 # pragma omp atomic write new-line
11144 # pragma omp atomic update new-line
11147 # pragma omp atomic capture new-line
11150 # pragma omp atomic capture new-line
11158 expression-stmt | x = x binop expr
11160 v = expression-stmt
11162 { v = x; update-stmt; } | { update-stmt; v = x; }
11166 expression-stmt | x = x binop expr | x = expr binop x
11170 { v = x; update-stmt; } | { update-stmt; v = x; } | { v = x; x = expr; }
11172 where x and v are lvalue expressions with scalar type.
11174 LOC is the location of the #pragma token. */
11177 c_parser_omp_atomic (location_t loc
, c_parser
*parser
)
11179 tree lhs
= NULL_TREE
, rhs
= NULL_TREE
, v
= NULL_TREE
;
11180 tree lhs1
= NULL_TREE
, rhs1
= NULL_TREE
;
11181 tree stmt
, orig_lhs
, unfolded_lhs
= NULL_TREE
, unfolded_lhs1
= NULL_TREE
;
11182 enum tree_code code
= OMP_ATOMIC
, opcode
= NOP_EXPR
;
11183 struct c_expr expr
;
11185 bool structured_block
= false;
11186 bool swapped
= false;
11187 bool seq_cst
= false;
11189 if (c_parser_next_token_is (parser
, CPP_NAME
))
11191 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
11193 if (!strcmp (p
, "read"))
11194 code
= OMP_ATOMIC_READ
;
11195 else if (!strcmp (p
, "write"))
11197 else if (!strcmp (p
, "update"))
11199 else if (!strcmp (p
, "capture"))
11200 code
= OMP_ATOMIC_CAPTURE_NEW
;
11204 c_parser_consume_token (parser
);
11206 if (c_parser_next_token_is (parser
, CPP_NAME
))
11208 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
11209 if (!strcmp (p
, "seq_cst"))
11212 c_parser_consume_token (parser
);
11215 c_parser_skip_to_pragma_eol (parser
);
11219 case OMP_ATOMIC_READ
:
11220 case NOP_EXPR
: /* atomic write */
11221 v
= c_parser_unary_expression (parser
).value
;
11222 v
= c_fully_fold (v
, false, NULL
);
11223 if (v
== error_mark_node
)
11225 loc
= c_parser_peek_token (parser
)->location
;
11226 if (!c_parser_require (parser
, CPP_EQ
, "expected %<=%>"))
11228 if (code
== NOP_EXPR
)
11229 lhs
= c_parser_expression (parser
).value
;
11231 lhs
= c_parser_unary_expression (parser
).value
;
11232 lhs
= c_fully_fold (lhs
, false, NULL
);
11233 if (lhs
== error_mark_node
)
11235 if (code
== NOP_EXPR
)
11237 /* atomic write is represented by OMP_ATOMIC with NOP_EXPR
11245 case OMP_ATOMIC_CAPTURE_NEW
:
11246 if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
11248 c_parser_consume_token (parser
);
11249 structured_block
= true;
11253 v
= c_parser_unary_expression (parser
).value
;
11254 v
= c_fully_fold (v
, false, NULL
);
11255 if (v
== error_mark_node
)
11257 if (!c_parser_require (parser
, CPP_EQ
, "expected %<=%>"))
11265 /* For structured_block case we don't know yet whether
11266 old or new x should be captured. */
11268 eloc
= c_parser_peek_token (parser
)->location
;
11269 expr
= c_parser_unary_expression (parser
);
11271 expr
= default_function_array_conversion (eloc
, expr
);
11272 unfolded_lhs
= expr
.value
;
11273 lhs
= c_fully_fold (lhs
, false, NULL
);
11275 switch (TREE_CODE (lhs
))
11279 c_parser_skip_to_end_of_block_or_statement (parser
);
11280 if (structured_block
)
11282 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
11283 c_parser_consume_token (parser
);
11284 else if (code
== OMP_ATOMIC_CAPTURE_NEW
)
11286 c_parser_skip_to_end_of_block_or_statement (parser
);
11287 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
11288 c_parser_consume_token (parser
);
11293 case POSTINCREMENT_EXPR
:
11294 if (code
== OMP_ATOMIC_CAPTURE_NEW
&& !structured_block
)
11295 code
= OMP_ATOMIC_CAPTURE_OLD
;
11297 case PREINCREMENT_EXPR
:
11298 lhs
= TREE_OPERAND (lhs
, 0);
11299 unfolded_lhs
= NULL_TREE
;
11300 opcode
= PLUS_EXPR
;
11301 rhs
= integer_one_node
;
11304 case POSTDECREMENT_EXPR
:
11305 if (code
== OMP_ATOMIC_CAPTURE_NEW
&& !structured_block
)
11306 code
= OMP_ATOMIC_CAPTURE_OLD
;
11308 case PREDECREMENT_EXPR
:
11309 lhs
= TREE_OPERAND (lhs
, 0);
11310 unfolded_lhs
= NULL_TREE
;
11311 opcode
= MINUS_EXPR
;
11312 rhs
= integer_one_node
;
11315 case COMPOUND_EXPR
:
11316 if (TREE_CODE (TREE_OPERAND (lhs
, 0)) == SAVE_EXPR
11317 && TREE_CODE (TREE_OPERAND (lhs
, 1)) == COMPOUND_EXPR
11318 && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs
, 1), 0)) == MODIFY_EXPR
11319 && TREE_OPERAND (TREE_OPERAND (lhs
, 1), 1) == TREE_OPERAND (lhs
, 0)
11320 && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND
11321 (TREE_OPERAND (lhs
, 1), 0), 0)))
11323 /* Undo effects of boolean_increment for post {in,de}crement. */
11324 lhs
= TREE_OPERAND (TREE_OPERAND (lhs
, 1), 0);
11327 if (TREE_CODE (lhs
) == MODIFY_EXPR
11328 && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs
, 0))) == BOOLEAN_TYPE
)
11330 /* Undo effects of boolean_increment. */
11331 if (integer_onep (TREE_OPERAND (lhs
, 1)))
11333 /* This is pre or post increment. */
11334 rhs
= TREE_OPERAND (lhs
, 1);
11335 lhs
= TREE_OPERAND (lhs
, 0);
11336 unfolded_lhs
= NULL_TREE
;
11338 if (code
== OMP_ATOMIC_CAPTURE_NEW
11339 && !structured_block
11340 && TREE_CODE (orig_lhs
) == COMPOUND_EXPR
)
11341 code
= OMP_ATOMIC_CAPTURE_OLD
;
11344 if (TREE_CODE (TREE_OPERAND (lhs
, 1)) == TRUTH_NOT_EXPR
11345 && TREE_OPERAND (lhs
, 0)
11346 == TREE_OPERAND (TREE_OPERAND (lhs
, 1), 0))
11348 /* This is pre or post decrement. */
11349 rhs
= TREE_OPERAND (lhs
, 1);
11350 lhs
= TREE_OPERAND (lhs
, 0);
11351 unfolded_lhs
= NULL_TREE
;
11353 if (code
== OMP_ATOMIC_CAPTURE_NEW
11354 && !structured_block
11355 && TREE_CODE (orig_lhs
) == COMPOUND_EXPR
)
11356 code
= OMP_ATOMIC_CAPTURE_OLD
;
11362 switch (c_parser_peek_token (parser
)->type
)
11365 opcode
= MULT_EXPR
;
11368 opcode
= TRUNC_DIV_EXPR
;
11371 opcode
= PLUS_EXPR
;
11374 opcode
= MINUS_EXPR
;
11376 case CPP_LSHIFT_EQ
:
11377 opcode
= LSHIFT_EXPR
;
11379 case CPP_RSHIFT_EQ
:
11380 opcode
= RSHIFT_EXPR
;
11383 opcode
= BIT_AND_EXPR
;
11386 opcode
= BIT_IOR_EXPR
;
11389 opcode
= BIT_XOR_EXPR
;
11392 c_parser_consume_token (parser
);
11393 eloc
= c_parser_peek_token (parser
)->location
;
11394 expr
= c_parser_expr_no_commas (parser
, NULL
, unfolded_lhs
);
11396 switch (TREE_CODE (rhs1
))
11399 case TRUNC_DIV_EXPR
:
11407 if (c_tree_equal (TREE_OPERAND (rhs1
, 0), unfolded_lhs
))
11409 opcode
= TREE_CODE (rhs1
);
11410 rhs
= c_fully_fold (TREE_OPERAND (rhs1
, 1), false, NULL
);
11411 rhs1
= c_fully_fold (TREE_OPERAND (rhs1
, 0), false, NULL
);
11414 if (c_tree_equal (TREE_OPERAND (rhs1
, 1), unfolded_lhs
))
11416 opcode
= TREE_CODE (rhs1
);
11417 rhs
= c_fully_fold (TREE_OPERAND (rhs1
, 0), false, NULL
);
11418 rhs1
= c_fully_fold (TREE_OPERAND (rhs1
, 1), false, NULL
);
11419 swapped
= !commutative_tree_code (opcode
);
11428 if (c_parser_peek_token (parser
)->type
== CPP_SEMICOLON
)
11430 if (structured_block
&& code
== OMP_ATOMIC_CAPTURE_NEW
)
11432 code
= OMP_ATOMIC_CAPTURE_OLD
;
11435 expr
= default_function_array_read_conversion (eloc
, expr
);
11436 unfolded_lhs1
= expr
.value
;
11437 lhs1
= c_fully_fold (unfolded_lhs1
, false, NULL
);
11439 c_parser_consume_token (parser
);
11442 if (structured_block
)
11445 expr
= default_function_array_read_conversion (eloc
, expr
);
11446 rhs
= c_fully_fold (expr
.value
, false, NULL
);
11451 c_parser_error (parser
, "invalid form of %<#pragma omp atomic%>");
11454 c_parser_error (parser
,
11455 "invalid operator for %<#pragma omp atomic%>");
11459 /* Arrange to pass the location of the assignment operator to
11460 c_finish_omp_atomic. */
11461 loc
= c_parser_peek_token (parser
)->location
;
11462 c_parser_consume_token (parser
);
11463 eloc
= c_parser_peek_token (parser
)->location
;
11464 expr
= c_parser_expression (parser
);
11465 expr
= default_function_array_read_conversion (eloc
, expr
);
11467 rhs
= c_fully_fold (rhs
, false, NULL
);
11471 if (structured_block
&& code
== OMP_ATOMIC_CAPTURE_NEW
)
11473 if (!c_parser_require (parser
, CPP_SEMICOLON
, "expected %<;%>"))
11475 v
= c_parser_unary_expression (parser
).value
;
11476 v
= c_fully_fold (v
, false, NULL
);
11477 if (v
== error_mark_node
)
11479 if (!c_parser_require (parser
, CPP_EQ
, "expected %<=%>"))
11481 eloc
= c_parser_peek_token (parser
)->location
;
11482 expr
= c_parser_unary_expression (parser
);
11484 expr
= default_function_array_read_conversion (eloc
, expr
);
11485 unfolded_lhs1
= expr
.value
;
11486 lhs1
= c_fully_fold (lhs1
, false, NULL
);
11487 if (lhs1
== error_mark_node
)
11490 if (structured_block
)
11492 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
11493 c_parser_require (parser
, CPP_CLOSE_BRACE
, "expected %<}%>");
11496 if (unfolded_lhs
&& unfolded_lhs1
11497 && !c_tree_equal (unfolded_lhs
, unfolded_lhs1
))
11499 error ("%<#pragma omp atomic capture%> uses two different "
11500 "expressions for memory");
11501 stmt
= error_mark_node
;
11504 stmt
= c_finish_omp_atomic (loc
, code
, opcode
, lhs
, rhs
, v
, lhs1
, rhs1
,
11506 if (stmt
!= error_mark_node
)
11509 if (!structured_block
)
11510 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
11515 # pragma omp barrier new-line
11519 c_parser_omp_barrier (c_parser
*parser
)
11521 location_t loc
= c_parser_peek_token (parser
)->location
;
11522 c_parser_consume_pragma (parser
);
11523 c_parser_skip_to_pragma_eol (parser
);
11525 c_finish_omp_barrier (loc
);
11529 # pragma omp critical [(name)] new-line
11532 LOC is the location of the #pragma itself. */
11535 c_parser_omp_critical (location_t loc
, c_parser
*parser
)
11537 tree stmt
, name
= NULL
;
11539 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
11541 c_parser_consume_token (parser
);
11542 if (c_parser_next_token_is (parser
, CPP_NAME
))
11544 name
= c_parser_peek_token (parser
)->value
;
11545 c_parser_consume_token (parser
);
11546 c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
11549 c_parser_error (parser
, "expected identifier");
11551 else if (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
11552 c_parser_error (parser
, "expected %<(%> or end of line");
11553 c_parser_skip_to_pragma_eol (parser
);
11555 stmt
= c_parser_omp_structured_block (parser
);
11556 return c_finish_omp_critical (loc
, stmt
, name
);
11560 # pragma omp flush flush-vars[opt] new-line
11563 ( variable-list ) */
11566 c_parser_omp_flush (c_parser
*parser
)
11568 location_t loc
= c_parser_peek_token (parser
)->location
;
11569 c_parser_consume_pragma (parser
);
11570 if (c_parser_next_token_is (parser
, CPP_OPEN_PAREN
))
11571 c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_ERROR
, NULL
);
11572 else if (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
11573 c_parser_error (parser
, "expected %<(%> or end of line");
11574 c_parser_skip_to_pragma_eol (parser
);
11576 c_finish_omp_flush (loc
);
11579 /* Parse the restricted form of the for statement allowed by OpenMP.
11580 The real trick here is to determine the loop control variable early
11581 so that we can push a new decl if necessary to make it private.
11582 LOC is the location of the OMP in "#pragma omp". */
11585 c_parser_omp_for_loop (location_t loc
, c_parser
*parser
, enum tree_code code
,
11586 tree clauses
, tree
*cclauses
)
11588 tree decl
, cond
, incr
, save_break
, save_cont
, body
, init
, stmt
, cl
;
11589 tree declv
, condv
, incrv
, initv
, ret
= NULL
;
11590 bool fail
= false, open_brace_parsed
= false;
11591 int i
, collapse
= 1, nbraces
= 0;
11592 location_t for_loc
;
11593 vec
<tree
, va_gc
> *for_block
= make_tree_vector ();
11595 for (cl
= clauses
; cl
; cl
= OMP_CLAUSE_CHAIN (cl
))
11596 if (OMP_CLAUSE_CODE (cl
) == OMP_CLAUSE_COLLAPSE
)
11597 collapse
= tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (cl
));
11599 gcc_assert (collapse
>= 1);
11601 declv
= make_tree_vec (collapse
);
11602 initv
= make_tree_vec (collapse
);
11603 condv
= make_tree_vec (collapse
);
11604 incrv
= make_tree_vec (collapse
);
11606 if (!c_parser_next_token_is_keyword (parser
, RID_FOR
))
11608 c_parser_error (parser
, "for statement expected");
11611 for_loc
= c_parser_peek_token (parser
)->location
;
11612 c_parser_consume_token (parser
);
11614 for (i
= 0; i
< collapse
; i
++)
11616 int bracecount
= 0;
11618 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
11621 /* Parse the initialization declaration or expression. */
11622 if (c_parser_next_tokens_start_declaration (parser
))
11625 vec_safe_push (for_block
, c_begin_compound_stmt (true));
11626 c_parser_declaration_or_fndef (parser
, true, true, true, true, true,
11628 decl
= check_for_loop_decls (for_loc
, flag_isoc99
);
11631 if (DECL_INITIAL (decl
) == error_mark_node
)
11632 decl
= error_mark_node
;
11635 else if (c_parser_next_token_is (parser
, CPP_NAME
)
11636 && c_parser_peek_2nd_token (parser
)->type
== CPP_EQ
)
11638 struct c_expr decl_exp
;
11639 struct c_expr init_exp
;
11640 location_t init_loc
;
11642 decl_exp
= c_parser_postfix_expression (parser
);
11643 decl
= decl_exp
.value
;
11645 c_parser_require (parser
, CPP_EQ
, "expected %<=%>");
11647 init_loc
= c_parser_peek_token (parser
)->location
;
11648 init_exp
= c_parser_expr_no_commas (parser
, NULL
);
11649 init_exp
= default_function_array_read_conversion (init_loc
,
11651 init
= build_modify_expr (init_loc
, decl
, decl_exp
.original_type
,
11652 NOP_EXPR
, init_loc
, init_exp
.value
,
11653 init_exp
.original_type
);
11654 init
= c_process_expr_stmt (init_loc
, init
);
11656 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
11661 c_parser_error (parser
,
11662 "expected iteration declaration or initialization");
11663 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
,
11669 /* Parse the loop condition. */
11671 if (c_parser_next_token_is_not (parser
, CPP_SEMICOLON
))
11673 location_t cond_loc
= c_parser_peek_token (parser
)->location
;
11674 struct c_expr cond_expr
11675 = c_parser_binary_expression (parser
, NULL
, NULL_TREE
);
11677 cond
= cond_expr
.value
;
11678 cond
= c_objc_common_truthvalue_conversion (cond_loc
, cond
);
11679 cond
= c_fully_fold (cond
, false, NULL
);
11680 switch (cond_expr
.original_code
)
11688 if (code
== CILK_SIMD
)
11692 /* Can't be cond = error_mark_node, because we want to preserve
11693 the location until c_finish_omp_for. */
11694 cond
= build1 (NOP_EXPR
, boolean_type_node
, error_mark_node
);
11697 protected_set_expr_location (cond
, cond_loc
);
11699 c_parser_skip_until_found (parser
, CPP_SEMICOLON
, "expected %<;%>");
11701 /* Parse the increment expression. */
11703 if (c_parser_next_token_is_not (parser
, CPP_CLOSE_PAREN
))
11705 location_t incr_loc
= c_parser_peek_token (parser
)->location
;
11707 incr
= c_process_expr_stmt (incr_loc
,
11708 c_parser_expression (parser
).value
);
11710 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
11712 if (decl
== NULL
|| decl
== error_mark_node
|| init
== error_mark_node
)
11716 TREE_VEC_ELT (declv
, i
) = decl
;
11717 TREE_VEC_ELT (initv
, i
) = init
;
11718 TREE_VEC_ELT (condv
, i
) = cond
;
11719 TREE_VEC_ELT (incrv
, i
) = incr
;
11723 if (i
== collapse
- 1)
11726 /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed
11727 in between the collapsed for loops to be still considered perfectly
11728 nested. Hopefully the final version clarifies this.
11729 For now handle (multiple) {'s and empty statements. */
11732 if (c_parser_next_token_is_keyword (parser
, RID_FOR
))
11734 c_parser_consume_token (parser
);
11737 else if (c_parser_next_token_is (parser
, CPP_OPEN_BRACE
))
11739 c_parser_consume_token (parser
);
11742 else if (bracecount
11743 && c_parser_next_token_is (parser
, CPP_SEMICOLON
))
11744 c_parser_consume_token (parser
);
11747 c_parser_error (parser
, "not enough perfectly nested loops");
11750 open_brace_parsed
= true;
11760 nbraces
+= bracecount
;
11763 save_break
= c_break_label
;
11764 if (code
== CILK_SIMD
)
11765 c_break_label
= build_int_cst (size_type_node
, 2);
11767 c_break_label
= size_one_node
;
11768 save_cont
= c_cont_label
;
11769 c_cont_label
= NULL_TREE
;
11770 body
= push_stmt_list ();
11772 if (open_brace_parsed
)
11774 location_t here
= c_parser_peek_token (parser
)->location
;
11775 stmt
= c_begin_compound_stmt (true);
11776 c_parser_compound_statement_nostart (parser
);
11777 add_stmt (c_end_compound_stmt (here
, stmt
, true));
11780 add_stmt (c_parser_c99_block_statement (parser
));
11783 tree t
= build1 (LABEL_EXPR
, void_type_node
, c_cont_label
);
11784 SET_EXPR_LOCATION (t
, loc
);
11788 body
= pop_stmt_list (body
);
11789 c_break_label
= save_break
;
11790 c_cont_label
= save_cont
;
11794 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
11796 c_parser_consume_token (parser
);
11799 else if (c_parser_next_token_is (parser
, CPP_SEMICOLON
))
11800 c_parser_consume_token (parser
);
11803 c_parser_error (parser
, "collapsed loops not perfectly nested");
11806 location_t here
= c_parser_peek_token (parser
)->location
;
11807 stmt
= c_begin_compound_stmt (true);
11809 c_parser_compound_statement_nostart (parser
);
11810 body
= c_end_compound_stmt (here
, stmt
, true);
11817 /* Only bother calling c_finish_omp_for if we haven't already generated
11818 an error from the initialization parsing. */
11821 stmt
= c_finish_omp_for (loc
, code
, declv
, initv
, condv
,
11822 incrv
, body
, NULL
);
11825 if (cclauses
!= NULL
11826 && cclauses
[C_OMP_CLAUSE_SPLIT_PARALLEL
] != NULL
)
11829 for (c
= &cclauses
[C_OMP_CLAUSE_SPLIT_PARALLEL
]; *c
; )
11830 if (OMP_CLAUSE_CODE (*c
) != OMP_CLAUSE_FIRSTPRIVATE
11831 && OMP_CLAUSE_CODE (*c
) != OMP_CLAUSE_LASTPRIVATE
)
11832 c
= &OMP_CLAUSE_CHAIN (*c
);
11835 for (i
= 0; i
< collapse
; i
++)
11836 if (TREE_VEC_ELT (declv
, i
) == OMP_CLAUSE_DECL (*c
))
11839 c
= &OMP_CLAUSE_CHAIN (*c
);
11840 else if (OMP_CLAUSE_CODE (*c
) == OMP_CLAUSE_FIRSTPRIVATE
)
11843 "iteration variable %qD should not be firstprivate",
11844 OMP_CLAUSE_DECL (*c
));
11845 *c
= OMP_CLAUSE_CHAIN (*c
);
11849 /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES,
11850 change it to shared (decl) in
11851 OMP_PARALLEL_CLAUSES. */
11852 tree l
= build_omp_clause (OMP_CLAUSE_LOCATION (*c
),
11853 OMP_CLAUSE_LASTPRIVATE
);
11854 OMP_CLAUSE_DECL (l
) = OMP_CLAUSE_DECL (*c
);
11855 OMP_CLAUSE_CHAIN (l
) = clauses
;
11857 OMP_CLAUSE_SET_CODE (*c
, OMP_CLAUSE_SHARED
);
11861 OMP_FOR_CLAUSES (stmt
) = clauses
;
11866 while (!for_block
->is_empty ())
11868 /* FIXME diagnostics: LOC below should be the actual location of
11869 this particular for block. We need to build a list of
11870 locations to go along with FOR_BLOCK. */
11871 stmt
= c_end_compound_stmt (loc
, for_block
->pop (), true);
11874 release_tree_vector (for_block
);
11878 /* Helper function for OpenMP parsing, split clauses and call
11879 finish_omp_clauses on each of the set of clauses afterwards. */
11882 omp_split_clauses (location_t loc
, enum tree_code code
,
11883 omp_clause_mask mask
, tree clauses
, tree
*cclauses
)
11886 c_omp_split_clauses (loc
, code
, mask
, clauses
, cclauses
);
11887 for (i
= 0; i
< C_OMP_CLAUSE_SPLIT_COUNT
; i
++)
11889 cclauses
[i
] = c_finish_omp_clauses (cclauses
[i
]);
11893 #pragma omp simd simd-clause[optseq] new-line
11896 LOC is the location of the #pragma token.
11899 #define OMP_SIMD_CLAUSE_MASK \
11900 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SAFELEN) \
11901 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \
11902 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \
11903 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
11904 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \
11905 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \
11906 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE))
11909 c_parser_omp_simd (location_t loc
, c_parser
*parser
,
11910 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
11912 tree block
, clauses
, ret
;
11914 strcat (p_name
, " simd");
11915 mask
|= OMP_SIMD_CLAUSE_MASK
;
11916 mask
&= ~(OMP_CLAUSE_MASK_1
<< PRAGMA_OMP_CLAUSE_ORDERED
);
11918 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
11921 omp_split_clauses (loc
, OMP_SIMD
, mask
, clauses
, cclauses
);
11922 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_SIMD
];
11925 block
= c_begin_compound_stmt (true);
11926 ret
= c_parser_omp_for_loop (loc
, parser
, OMP_SIMD
, clauses
, cclauses
);
11927 block
= c_end_compound_stmt (loc
, block
, true);
11934 #pragma omp for for-clause[optseq] new-line
11938 #pragma omp for simd for-simd-clause[optseq] new-line
11941 LOC is the location of the #pragma token.
11944 #define OMP_FOR_CLAUSE_MASK \
11945 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
11946 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
11947 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \
11948 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \
11949 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ORDERED) \
11950 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SCHEDULE) \
11951 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE) \
11952 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT))
11955 c_parser_omp_for (location_t loc
, c_parser
*parser
,
11956 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
11958 tree block
, clauses
, ret
;
11960 strcat (p_name
, " for");
11961 mask
|= OMP_FOR_CLAUSE_MASK
;
11963 mask
&= ~(OMP_CLAUSE_MASK_1
<< PRAGMA_OMP_CLAUSE_NOWAIT
);
11965 if (c_parser_next_token_is (parser
, CPP_NAME
))
11967 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
11969 if (strcmp (p
, "simd") == 0)
11971 tree cclauses_buf
[C_OMP_CLAUSE_SPLIT_COUNT
];
11972 if (cclauses
== NULL
)
11973 cclauses
= cclauses_buf
;
11975 c_parser_consume_token (parser
);
11976 if (!flag_openmp
) /* flag_openmp_simd */
11977 return c_parser_omp_simd (loc
, parser
, p_name
, mask
, cclauses
);
11978 block
= c_begin_compound_stmt (true);
11979 ret
= c_parser_omp_simd (loc
, parser
, p_name
, mask
, cclauses
);
11980 block
= c_end_compound_stmt (loc
, block
, true);
11981 if (ret
== NULL_TREE
)
11983 ret
= make_node (OMP_FOR
);
11984 TREE_TYPE (ret
) = void_type_node
;
11985 OMP_FOR_BODY (ret
) = block
;
11986 OMP_FOR_CLAUSES (ret
) = cclauses
[C_OMP_CLAUSE_SPLIT_FOR
];
11987 SET_EXPR_LOCATION (ret
, loc
);
11992 if (!flag_openmp
) /* flag_openmp_simd */
11994 c_parser_skip_to_pragma_eol (parser
);
11998 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
12001 omp_split_clauses (loc
, OMP_FOR
, mask
, clauses
, cclauses
);
12002 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_FOR
];
12005 block
= c_begin_compound_stmt (true);
12006 ret
= c_parser_omp_for_loop (loc
, parser
, OMP_FOR
, clauses
, cclauses
);
12007 block
= c_end_compound_stmt (loc
, block
, true);
12014 # pragma omp master new-line
12017 LOC is the location of the #pragma token.
12021 c_parser_omp_master (location_t loc
, c_parser
*parser
)
12023 c_parser_skip_to_pragma_eol (parser
);
12024 return c_finish_omp_master (loc
, c_parser_omp_structured_block (parser
));
12028 # pragma omp ordered new-line
12031 LOC is the location of the #pragma itself.
12035 c_parser_omp_ordered (location_t loc
, c_parser
*parser
)
12037 c_parser_skip_to_pragma_eol (parser
);
12038 return c_finish_omp_ordered (loc
, c_parser_omp_structured_block (parser
));
12044 { section-sequence }
12047 section-directive[opt] structured-block
12048 section-sequence section-directive structured-block
12050 SECTIONS_LOC is the location of the #pragma omp sections. */
12053 c_parser_omp_sections_scope (location_t sections_loc
, c_parser
*parser
)
12055 tree stmt
, substmt
;
12056 bool error_suppress
= false;
12059 loc
= c_parser_peek_token (parser
)->location
;
12060 if (!c_parser_require (parser
, CPP_OPEN_BRACE
, "expected %<{%>"))
12062 /* Avoid skipping until the end of the block. */
12063 parser
->error
= false;
12067 stmt
= push_stmt_list ();
12069 if (c_parser_peek_token (parser
)->pragma_kind
!= PRAGMA_OMP_SECTION
)
12071 substmt
= c_parser_omp_structured_block (parser
);
12072 substmt
= build1 (OMP_SECTION
, void_type_node
, substmt
);
12073 SET_EXPR_LOCATION (substmt
, loc
);
12074 add_stmt (substmt
);
12079 if (c_parser_next_token_is (parser
, CPP_CLOSE_BRACE
))
12081 if (c_parser_next_token_is (parser
, CPP_EOF
))
12084 loc
= c_parser_peek_token (parser
)->location
;
12085 if (c_parser_peek_token (parser
)->pragma_kind
== PRAGMA_OMP_SECTION
)
12087 c_parser_consume_pragma (parser
);
12088 c_parser_skip_to_pragma_eol (parser
);
12089 error_suppress
= false;
12091 else if (!error_suppress
)
12093 error_at (loc
, "expected %<#pragma omp section%> or %<}%>");
12094 error_suppress
= true;
12097 substmt
= c_parser_omp_structured_block (parser
);
12098 substmt
= build1 (OMP_SECTION
, void_type_node
, substmt
);
12099 SET_EXPR_LOCATION (substmt
, loc
);
12100 add_stmt (substmt
);
12102 c_parser_skip_until_found (parser
, CPP_CLOSE_BRACE
,
12103 "expected %<#pragma omp section%> or %<}%>");
12105 substmt
= pop_stmt_list (stmt
);
12107 stmt
= make_node (OMP_SECTIONS
);
12108 SET_EXPR_LOCATION (stmt
, sections_loc
);
12109 TREE_TYPE (stmt
) = void_type_node
;
12110 OMP_SECTIONS_BODY (stmt
) = substmt
;
12112 return add_stmt (stmt
);
12116 # pragma omp sections sections-clause[optseq] newline
12119 LOC is the location of the #pragma token.
12122 #define OMP_SECTIONS_CLAUSE_MASK \
12123 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12124 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12125 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LASTPRIVATE) \
12126 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \
12127 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT))
12130 c_parser_omp_sections (location_t loc
, c_parser
*parser
,
12131 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
12133 tree block
, clauses
, ret
;
12135 strcat (p_name
, " sections");
12136 mask
|= OMP_SECTIONS_CLAUSE_MASK
;
12138 mask
&= ~(OMP_CLAUSE_MASK_1
<< PRAGMA_OMP_CLAUSE_NOWAIT
);
12140 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
12143 omp_split_clauses (loc
, OMP_SECTIONS
, mask
, clauses
, cclauses
);
12144 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_SECTIONS
];
12147 block
= c_begin_compound_stmt (true);
12148 ret
= c_parser_omp_sections_scope (loc
, parser
);
12150 OMP_SECTIONS_CLAUSES (ret
) = clauses
;
12151 block
= c_end_compound_stmt (loc
, block
, true);
12158 # pragma omp parallel parallel-clause[optseq] new-line
12160 # pragma omp parallel for parallel-for-clause[optseq] new-line
12162 # pragma omp parallel sections parallel-sections-clause[optseq] new-line
12166 # pragma omp parallel for simd parallel-for-simd-clause[optseq] new-line
12169 LOC is the location of the #pragma token.
12172 #define OMP_PARALLEL_CLAUSE_MASK \
12173 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \
12174 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12175 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12176 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \
12177 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \
12178 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYIN) \
12179 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \
12180 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_THREADS) \
12181 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PROC_BIND))
12184 c_parser_omp_parallel (location_t loc
, c_parser
*parser
,
12185 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
12187 tree stmt
, clauses
, block
;
12189 strcat (p_name
, " parallel");
12190 mask
|= OMP_PARALLEL_CLAUSE_MASK
;
12192 if (c_parser_next_token_is_keyword (parser
, RID_FOR
))
12194 tree cclauses_buf
[C_OMP_CLAUSE_SPLIT_COUNT
];
12195 if (cclauses
== NULL
)
12196 cclauses
= cclauses_buf
;
12198 c_parser_consume_token (parser
);
12199 if (!flag_openmp
) /* flag_openmp_simd */
12200 return c_parser_omp_for (loc
, parser
, p_name
, mask
, cclauses
);
12201 block
= c_begin_omp_parallel ();
12202 c_parser_omp_for (loc
, parser
, p_name
, mask
, cclauses
);
12204 = c_finish_omp_parallel (loc
, cclauses
[C_OMP_CLAUSE_SPLIT_PARALLEL
],
12206 OMP_PARALLEL_COMBINED (stmt
) = 1;
12211 error_at (loc
, "expected %<for%> after %qs", p_name
);
12212 c_parser_skip_to_pragma_eol (parser
);
12215 else if (!flag_openmp
) /* flag_openmp_simd */
12217 c_parser_skip_to_pragma_eol (parser
);
12220 else if (c_parser_next_token_is (parser
, CPP_NAME
))
12222 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
12223 if (strcmp (p
, "sections") == 0)
12225 tree cclauses_buf
[C_OMP_CLAUSE_SPLIT_COUNT
];
12226 if (cclauses
== NULL
)
12227 cclauses
= cclauses_buf
;
12229 c_parser_consume_token (parser
);
12230 block
= c_begin_omp_parallel ();
12231 c_parser_omp_sections (loc
, parser
, p_name
, mask
, cclauses
);
12232 stmt
= c_finish_omp_parallel (loc
,
12233 cclauses
[C_OMP_CLAUSE_SPLIT_PARALLEL
],
12235 OMP_PARALLEL_COMBINED (stmt
) = 1;
12240 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
12242 block
= c_begin_omp_parallel ();
12243 c_parser_statement (parser
);
12244 stmt
= c_finish_omp_parallel (loc
, clauses
, block
);
12250 # pragma omp single single-clause[optseq] new-line
12253 LOC is the location of the #pragma.
12256 #define OMP_SINGLE_CLAUSE_MASK \
12257 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12258 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12259 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COPYPRIVATE) \
12260 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOWAIT))
12263 c_parser_omp_single (location_t loc
, c_parser
*parser
)
12265 tree stmt
= make_node (OMP_SINGLE
);
12266 SET_EXPR_LOCATION (stmt
, loc
);
12267 TREE_TYPE (stmt
) = void_type_node
;
12269 OMP_SINGLE_CLAUSES (stmt
)
12270 = c_parser_omp_all_clauses (parser
, OMP_SINGLE_CLAUSE_MASK
,
12271 "#pragma omp single");
12272 OMP_SINGLE_BODY (stmt
) = c_parser_omp_structured_block (parser
);
12274 return add_stmt (stmt
);
12278 # pragma omp task task-clause[optseq] new-line
12280 LOC is the location of the #pragma.
12283 #define OMP_TASK_CLAUSE_MASK \
12284 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF) \
12285 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNTIED) \
12286 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT) \
12287 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12288 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12289 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \
12290 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FINAL) \
12291 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MERGEABLE) \
12292 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEPEND))
12295 c_parser_omp_task (location_t loc
, c_parser
*parser
)
12297 tree clauses
, block
;
12299 clauses
= c_parser_omp_all_clauses (parser
, OMP_TASK_CLAUSE_MASK
,
12300 "#pragma omp task");
12302 block
= c_begin_omp_task ();
12303 c_parser_statement (parser
);
12304 return c_finish_omp_task (loc
, clauses
, block
);
12308 # pragma omp taskwait new-line
12312 c_parser_omp_taskwait (c_parser
*parser
)
12314 location_t loc
= c_parser_peek_token (parser
)->location
;
12315 c_parser_consume_pragma (parser
);
12316 c_parser_skip_to_pragma_eol (parser
);
12318 c_finish_omp_taskwait (loc
);
12322 # pragma omp taskyield new-line
12326 c_parser_omp_taskyield (c_parser
*parser
)
12328 location_t loc
= c_parser_peek_token (parser
)->location
;
12329 c_parser_consume_pragma (parser
);
12330 c_parser_skip_to_pragma_eol (parser
);
12332 c_finish_omp_taskyield (loc
);
12336 # pragma omp taskgroup new-line
12340 c_parser_omp_taskgroup (c_parser
*parser
)
12342 location_t loc
= c_parser_peek_token (parser
)->location
;
12343 c_parser_skip_to_pragma_eol (parser
);
12344 return c_finish_omp_taskgroup (loc
, c_parser_omp_structured_block (parser
));
12348 # pragma omp cancel cancel-clause[optseq] new-line
12350 LOC is the location of the #pragma.
12353 #define OMP_CANCEL_CLAUSE_MASK \
12354 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \
12355 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \
12356 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \
12357 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP) \
12358 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF))
12361 c_parser_omp_cancel (c_parser
*parser
)
12363 location_t loc
= c_parser_peek_token (parser
)->location
;
12365 c_parser_consume_pragma (parser
);
12366 tree clauses
= c_parser_omp_all_clauses (parser
, OMP_CANCEL_CLAUSE_MASK
,
12367 "#pragma omp cancel");
12369 c_finish_omp_cancel (loc
, clauses
);
12373 # pragma omp cancellation point cancelpt-clause[optseq] new-line
12375 LOC is the location of the #pragma.
12378 #define OMP_CANCELLATION_POINT_CLAUSE_MASK \
12379 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PARALLEL) \
12380 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FOR) \
12381 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SECTIONS) \
12382 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TASKGROUP))
12385 c_parser_omp_cancellation_point (c_parser
*parser
)
12387 location_t loc
= c_parser_peek_token (parser
)->location
;
12389 bool point_seen
= false;
12391 c_parser_consume_pragma (parser
);
12392 if (c_parser_next_token_is (parser
, CPP_NAME
))
12394 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
12395 if (strcmp (p
, "point") == 0)
12397 c_parser_consume_token (parser
);
12403 c_parser_error (parser
, "expected %<point%>");
12404 c_parser_skip_to_pragma_eol (parser
);
12409 = c_parser_omp_all_clauses (parser
, OMP_CANCELLATION_POINT_CLAUSE_MASK
,
12410 "#pragma omp cancellation point");
12412 c_finish_omp_cancellation_point (loc
, clauses
);
12416 #pragma omp distribute distribute-clause[optseq] new-line
12419 #define OMP_DISTRIBUTE_CLAUSE_MASK \
12420 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12421 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12422 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DIST_SCHEDULE)\
12423 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_COLLAPSE))
12426 c_parser_omp_distribute (location_t loc
, c_parser
*parser
,
12427 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
12429 tree clauses
, block
, ret
;
12431 strcat (p_name
, " distribute");
12432 mask
|= OMP_DISTRIBUTE_CLAUSE_MASK
;
12434 if (c_parser_next_token_is (parser
, CPP_NAME
))
12436 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
12438 bool parallel
= false;
12440 if (strcmp (p
, "simd") == 0)
12443 parallel
= strcmp (p
, "parallel") == 0;
12444 if (parallel
|| simd
)
12446 tree cclauses_buf
[C_OMP_CLAUSE_SPLIT_COUNT
];
12447 if (cclauses
== NULL
)
12448 cclauses
= cclauses_buf
;
12449 c_parser_consume_token (parser
);
12450 if (!flag_openmp
) /* flag_openmp_simd */
12453 return c_parser_omp_simd (loc
, parser
, p_name
, mask
, cclauses
);
12455 return c_parser_omp_parallel (loc
, parser
, p_name
, mask
,
12458 block
= c_begin_compound_stmt (true);
12460 ret
= c_parser_omp_simd (loc
, parser
, p_name
, mask
, cclauses
);
12462 ret
= c_parser_omp_parallel (loc
, parser
, p_name
, mask
, cclauses
);
12463 block
= c_end_compound_stmt (loc
, block
, true);
12466 ret
= make_node (OMP_DISTRIBUTE
);
12467 TREE_TYPE (ret
) = void_type_node
;
12468 OMP_FOR_BODY (ret
) = block
;
12469 OMP_FOR_CLAUSES (ret
) = cclauses
[C_OMP_CLAUSE_SPLIT_DISTRIBUTE
];
12470 SET_EXPR_LOCATION (ret
, loc
);
12475 if (!flag_openmp
) /* flag_openmp_simd */
12477 c_parser_skip_to_pragma_eol (parser
);
12481 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
12484 omp_split_clauses (loc
, OMP_DISTRIBUTE
, mask
, clauses
, cclauses
);
12485 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_DISTRIBUTE
];
12488 block
= c_begin_compound_stmt (true);
12489 ret
= c_parser_omp_for_loop (loc
, parser
, OMP_DISTRIBUTE
, clauses
, NULL
);
12490 block
= c_end_compound_stmt (loc
, block
, true);
12497 # pragma omp teams teams-clause[optseq] new-line
12498 structured-block */
12500 #define OMP_TEAMS_CLAUSE_MASK \
12501 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_PRIVATE) \
12502 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
12503 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SHARED) \
12504 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_REDUCTION) \
12505 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NUM_TEAMS) \
12506 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_THREAD_LIMIT) \
12507 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEFAULT))
12510 c_parser_omp_teams (location_t loc
, c_parser
*parser
,
12511 char *p_name
, omp_clause_mask mask
, tree
*cclauses
)
12513 tree clauses
, block
, ret
;
12515 strcat (p_name
, " teams");
12516 mask
|= OMP_TEAMS_CLAUSE_MASK
;
12518 if (c_parser_next_token_is (parser
, CPP_NAME
))
12520 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
12521 if (strcmp (p
, "distribute") == 0)
12523 tree cclauses_buf
[C_OMP_CLAUSE_SPLIT_COUNT
];
12524 if (cclauses
== NULL
)
12525 cclauses
= cclauses_buf
;
12527 c_parser_consume_token (parser
);
12528 if (!flag_openmp
) /* flag_openmp_simd */
12529 return c_parser_omp_distribute (loc
, parser
, p_name
, mask
, cclauses
);
12530 block
= c_begin_compound_stmt (true);
12531 ret
= c_parser_omp_distribute (loc
, parser
, p_name
, mask
, cclauses
);
12532 block
= c_end_compound_stmt (loc
, block
, true);
12535 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_TEAMS
];
12536 ret
= make_node (OMP_TEAMS
);
12537 TREE_TYPE (ret
) = void_type_node
;
12538 OMP_TEAMS_CLAUSES (ret
) = clauses
;
12539 OMP_TEAMS_BODY (ret
) = block
;
12540 return add_stmt (ret
);
12543 if (!flag_openmp
) /* flag_openmp_simd */
12545 c_parser_skip_to_pragma_eol (parser
);
12549 clauses
= c_parser_omp_all_clauses (parser
, mask
, p_name
, cclauses
== NULL
);
12552 omp_split_clauses (loc
, OMP_TEAMS
, mask
, clauses
, cclauses
);
12553 clauses
= cclauses
[C_OMP_CLAUSE_SPLIT_TEAMS
];
12556 tree stmt
= make_node (OMP_TEAMS
);
12557 TREE_TYPE (stmt
) = void_type_node
;
12558 OMP_TEAMS_CLAUSES (stmt
) = clauses
;
12559 OMP_TEAMS_BODY (stmt
) = c_parser_omp_structured_block (parser
);
12561 return add_stmt (stmt
);
12565 # pragma omp target data target-data-clause[optseq] new-line
12566 structured-block */
12568 #define OMP_TARGET_DATA_CLAUSE_MASK \
12569 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \
12570 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \
12571 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF))
12574 c_parser_omp_target_data (location_t loc
, c_parser
*parser
)
12576 tree stmt
= make_node (OMP_TARGET_DATA
);
12577 TREE_TYPE (stmt
) = void_type_node
;
12579 OMP_TARGET_DATA_CLAUSES (stmt
)
12580 = c_parser_omp_all_clauses (parser
, OMP_TARGET_DATA_CLAUSE_MASK
,
12581 "#pragma omp target data");
12582 keep_next_level ();
12583 tree block
= c_begin_compound_stmt (true);
12584 add_stmt (c_parser_omp_structured_block (parser
));
12585 OMP_TARGET_DATA_BODY (stmt
) = c_end_compound_stmt (loc
, block
, true);
12587 SET_EXPR_LOCATION (stmt
, loc
);
12588 return add_stmt (stmt
);
12592 # pragma omp target update target-update-clause[optseq] new-line */
12594 #define OMP_TARGET_UPDATE_CLAUSE_MASK \
12595 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_FROM) \
12596 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_TO) \
12597 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \
12598 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF))
12601 c_parser_omp_target_update (location_t loc
, c_parser
*parser
,
12602 enum pragma_context context
)
12604 if (context
== pragma_stmt
)
12607 "%<#pragma omp target update%> may only be "
12608 "used in compound statements");
12609 c_parser_skip_to_pragma_eol (parser
);
12614 = c_parser_omp_all_clauses (parser
, OMP_TARGET_UPDATE_CLAUSE_MASK
,
12615 "#pragma omp target update");
12616 if (find_omp_clause (clauses
, OMP_CLAUSE_TO
) == NULL_TREE
12617 && find_omp_clause (clauses
, OMP_CLAUSE_FROM
) == NULL_TREE
)
12620 "%<#pragma omp target update must contain at least one "
12621 "%<from%> or %<to%> clauses");
12625 tree stmt
= make_node (OMP_TARGET_UPDATE
);
12626 TREE_TYPE (stmt
) = void_type_node
;
12627 OMP_TARGET_UPDATE_CLAUSES (stmt
) = clauses
;
12628 SET_EXPR_LOCATION (stmt
, loc
);
12634 # pragma omp target target-clause[optseq] new-line
12635 structured-block */
12637 #define OMP_TARGET_CLAUSE_MASK \
12638 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_DEVICE) \
12639 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_MAP) \
12640 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_IF))
12643 c_parser_omp_target (c_parser
*parser
, enum pragma_context context
)
12645 location_t loc
= c_parser_peek_token (parser
)->location
;
12646 c_parser_consume_pragma (parser
);
12648 if (context
!= pragma_stmt
&& context
!= pragma_compound
)
12650 c_parser_error (parser
, "expected declaration specifiers");
12651 c_parser_skip_to_pragma_eol (parser
);
12655 if (c_parser_next_token_is (parser
, CPP_NAME
))
12657 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
12659 if (strcmp (p
, "teams") == 0)
12661 tree cclauses
[C_OMP_CLAUSE_SPLIT_COUNT
];
12662 char p_name
[sizeof ("#pragma omp target teams distribute "
12663 "parallel for simd")];
12665 c_parser_consume_token (parser
);
12666 strcpy (p_name
, "#pragma omp target");
12667 if (!flag_openmp
) /* flag_openmp_simd */
12668 return c_parser_omp_teams (loc
, parser
, p_name
,
12669 OMP_TARGET_CLAUSE_MASK
, cclauses
);
12670 keep_next_level ();
12671 tree block
= c_begin_compound_stmt (true);
12672 tree ret
= c_parser_omp_teams (loc
, parser
, p_name
,
12673 OMP_TARGET_CLAUSE_MASK
, cclauses
);
12674 block
= c_end_compound_stmt (loc
, block
, true);
12677 tree stmt
= make_node (OMP_TARGET
);
12678 TREE_TYPE (stmt
) = void_type_node
;
12679 OMP_TARGET_CLAUSES (stmt
) = cclauses
[C_OMP_CLAUSE_SPLIT_TARGET
];
12680 OMP_TARGET_BODY (stmt
) = block
;
12684 else if (!flag_openmp
) /* flag_openmp_simd */
12686 c_parser_skip_to_pragma_eol (parser
);
12689 else if (strcmp (p
, "data") == 0)
12691 c_parser_consume_token (parser
);
12692 c_parser_omp_target_data (loc
, parser
);
12695 else if (strcmp (p
, "update") == 0)
12697 c_parser_consume_token (parser
);
12698 return c_parser_omp_target_update (loc
, parser
, context
);
12702 tree stmt
= make_node (OMP_TARGET
);
12703 TREE_TYPE (stmt
) = void_type_node
;
12705 OMP_TARGET_CLAUSES (stmt
)
12706 = c_parser_omp_all_clauses (parser
, OMP_TARGET_CLAUSE_MASK
,
12707 "#pragma omp target");
12708 keep_next_level ();
12709 tree block
= c_begin_compound_stmt (true);
12710 add_stmt (c_parser_omp_structured_block (parser
));
12711 OMP_TARGET_BODY (stmt
) = c_end_compound_stmt (loc
, block
, true);
12713 SET_EXPR_LOCATION (stmt
, loc
);
12719 # pragma omp declare simd declare-simd-clauses[optseq] new-line */
12721 #define OMP_DECLARE_SIMD_CLAUSE_MASK \
12722 ( (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_SIMDLEN) \
12723 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_LINEAR) \
12724 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_ALIGNED) \
12725 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_UNIFORM) \
12726 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_INBRANCH) \
12727 | (OMP_CLAUSE_MASK_1 << PRAGMA_OMP_CLAUSE_NOTINBRANCH))
12730 c_parser_omp_declare_simd (c_parser
*parser
, enum pragma_context context
)
12732 vec
<c_token
> clauses
= vNULL
;
12733 while (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
12735 c_token
*token
= c_parser_peek_token (parser
);
12736 if (token
->type
== CPP_EOF
)
12738 c_parser_skip_to_pragma_eol (parser
);
12739 clauses
.release ();
12742 clauses
.safe_push (*token
);
12743 c_parser_consume_token (parser
);
12745 clauses
.safe_push (*c_parser_peek_token (parser
));
12746 c_parser_skip_to_pragma_eol (parser
);
12748 while (c_parser_next_token_is (parser
, CPP_PRAGMA
))
12750 if (c_parser_peek_token (parser
)->pragma_kind
12751 != PRAGMA_OMP_DECLARE_REDUCTION
12752 || c_parser_peek_2nd_token (parser
)->type
!= CPP_NAME
12753 || strcmp (IDENTIFIER_POINTER
12754 (c_parser_peek_2nd_token (parser
)->value
),
12757 c_parser_error (parser
,
12758 "%<#pragma omp declare simd%> must be followed by "
12759 "function declaration or definition or another "
12760 "%<#pragma omp declare simd%>");
12761 clauses
.release ();
12764 c_parser_consume_pragma (parser
);
12765 while (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
12767 c_token
*token
= c_parser_peek_token (parser
);
12768 if (token
->type
== CPP_EOF
)
12770 c_parser_skip_to_pragma_eol (parser
);
12771 clauses
.release ();
12774 clauses
.safe_push (*token
);
12775 c_parser_consume_token (parser
);
12777 clauses
.safe_push (*c_parser_peek_token (parser
));
12778 c_parser_skip_to_pragma_eol (parser
);
12781 /* Make sure nothing tries to read past the end of the tokens. */
12783 memset (&eof_token
, 0, sizeof (eof_token
));
12784 eof_token
.type
= CPP_EOF
;
12785 clauses
.safe_push (eof_token
);
12786 clauses
.safe_push (eof_token
);
12790 case pragma_external
:
12791 if (c_parser_next_token_is (parser
, CPP_KEYWORD
)
12792 && c_parser_peek_token (parser
)->keyword
== RID_EXTENSION
)
12794 int ext
= disable_extension_diagnostics ();
12796 c_parser_consume_token (parser
);
12797 while (c_parser_next_token_is (parser
, CPP_KEYWORD
)
12798 && c_parser_peek_token (parser
)->keyword
== RID_EXTENSION
);
12799 c_parser_declaration_or_fndef (parser
, true, true, true, false, true,
12801 restore_extension_diagnostics (ext
);
12804 c_parser_declaration_or_fndef (parser
, true, true, true, false, true,
12807 case pragma_struct
:
12809 c_parser_error (parser
, "%<#pragma omp declare simd%> must be followed by "
12810 "function declaration or definition");
12812 case pragma_compound
:
12814 if (c_parser_next_token_is (parser
, CPP_KEYWORD
)
12815 && c_parser_peek_token (parser
)->keyword
== RID_EXTENSION
)
12817 int ext
= disable_extension_diagnostics ();
12819 c_parser_consume_token (parser
);
12820 while (c_parser_next_token_is (parser
, CPP_KEYWORD
)
12821 && c_parser_peek_token (parser
)->keyword
== RID_EXTENSION
);
12822 if (c_parser_next_tokens_start_declaration (parser
))
12824 c_parser_declaration_or_fndef (parser
, true, true, true, true,
12825 true, NULL
, clauses
);
12826 restore_extension_diagnostics (ext
);
12829 restore_extension_diagnostics (ext
);
12831 else if (c_parser_next_tokens_start_declaration (parser
))
12833 c_parser_declaration_or_fndef (parser
, true, true, true, true, true,
12837 c_parser_error (parser
, "%<#pragma omp declare simd%> must be followed by "
12838 "function declaration or definition");
12841 gcc_unreachable ();
12843 clauses
.release ();
12846 /* Finalize #pragma omp declare simd clauses after FNDECL has been parsed,
12847 and put that into "omp declare simd" attribute. */
12850 c_finish_omp_declare_simd (c_parser
*parser
, tree fndecl
, tree parms
,
12851 vec
<c_token
> clauses
)
12853 if (flag_enable_cilkplus
12854 && clauses
.exists () && !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
12856 error ("%<#pragma omp declare simd%> cannot be used in the same "
12857 "function marked as a Cilk Plus SIMD-enabled function");
12858 vec_free (parser
->cilk_simd_fn_tokens
);
12862 /* Normally first token is CPP_NAME "simd". CPP_EOF there indicates
12863 error has been reported and CPP_PRAGMA that c_finish_omp_declare_simd
12864 has already processed the tokens. */
12865 if (clauses
.exists () && clauses
[0].type
== CPP_EOF
)
12867 if (fndecl
== NULL_TREE
|| TREE_CODE (fndecl
) != FUNCTION_DECL
)
12869 error ("%<#pragma omp declare simd%> not immediately followed by "
12870 "a function declaration or definition");
12871 clauses
[0].type
= CPP_EOF
;
12874 if (clauses
.exists () && clauses
[0].type
!= CPP_NAME
)
12876 error_at (DECL_SOURCE_LOCATION (fndecl
),
12877 "%<#pragma omp declare simd%> not immediately followed by "
12878 "a single function declaration or definition");
12879 clauses
[0].type
= CPP_EOF
;
12883 if (parms
== NULL_TREE
)
12884 parms
= DECL_ARGUMENTS (fndecl
);
12886 unsigned int tokens_avail
= parser
->tokens_avail
;
12887 gcc_assert (parser
->tokens
== &parser
->tokens_buf
[0]);
12888 bool is_cilkplus_cilk_simd_fn
= false;
12890 if (flag_enable_cilkplus
&& !vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
12892 parser
->tokens
= parser
->cilk_simd_fn_tokens
->address ();
12893 parser
->tokens_avail
= vec_safe_length (parser
->cilk_simd_fn_tokens
);
12894 is_cilkplus_cilk_simd_fn
= true;
12898 parser
->tokens
= clauses
.address ();
12899 parser
->tokens_avail
= clauses
.length ();
12902 /* c_parser_omp_declare_simd pushed 2 extra CPP_EOF tokens at the end. */
12903 while (parser
->tokens_avail
> 3)
12905 c_token
*token
= c_parser_peek_token (parser
);
12906 if (!is_cilkplus_cilk_simd_fn
)
12907 gcc_assert (token
->type
== CPP_NAME
12908 && strcmp (IDENTIFIER_POINTER (token
->value
), "simd") == 0);
12910 gcc_assert (token
->type
== CPP_NAME
12911 && is_cilkplus_vector_p (token
->value
));
12912 c_parser_consume_token (parser
);
12913 parser
->in_pragma
= true;
12915 tree c
= NULL_TREE
;
12916 if (is_cilkplus_cilk_simd_fn
)
12917 c
= c_parser_omp_all_clauses (parser
, CILK_SIMD_FN_CLAUSE_MASK
,
12918 "SIMD-enabled functions attribute");
12920 c
= c_parser_omp_all_clauses (parser
, OMP_DECLARE_SIMD_CLAUSE_MASK
,
12921 "#pragma omp declare simd");
12922 c
= c_omp_declare_simd_clauses_to_numbers (parms
, c
);
12923 if (c
!= NULL_TREE
)
12924 c
= tree_cons (NULL_TREE
, c
, NULL_TREE
);
12925 if (is_cilkplus_cilk_simd_fn
)
12927 tree k
= build_tree_list (get_identifier ("cilk simd function"), c
);
12928 TREE_CHAIN (k
) = DECL_ATTRIBUTES (fndecl
);
12929 DECL_ATTRIBUTES (fndecl
) = k
;
12931 c
= build_tree_list (get_identifier ("omp declare simd"), c
);
12932 TREE_CHAIN (c
) = DECL_ATTRIBUTES (fndecl
);
12933 DECL_ATTRIBUTES (fndecl
) = c
;
12936 parser
->tokens
= &parser
->tokens_buf
[0];
12937 parser
->tokens_avail
= tokens_avail
;
12938 if (clauses
.exists ())
12939 clauses
[0].type
= CPP_PRAGMA
;
12941 if (!vec_safe_is_empty (parser
->cilk_simd_fn_tokens
))
12942 vec_free (parser
->cilk_simd_fn_tokens
);
12947 # pragma omp declare target new-line
12948 declarations and definitions
12949 # pragma omp end declare target new-line */
12952 c_parser_omp_declare_target (c_parser
*parser
)
12954 c_parser_skip_to_pragma_eol (parser
);
12955 current_omp_declare_target_attribute
++;
12959 c_parser_omp_end_declare_target (c_parser
*parser
)
12961 location_t loc
= c_parser_peek_token (parser
)->location
;
12962 c_parser_consume_pragma (parser
);
12963 if (c_parser_next_token_is (parser
, CPP_NAME
)
12964 && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
),
12967 c_parser_consume_token (parser
);
12968 if (c_parser_next_token_is (parser
, CPP_NAME
)
12969 && strcmp (IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
),
12971 c_parser_consume_token (parser
);
12974 c_parser_error (parser
, "expected %<target%>");
12975 c_parser_skip_to_pragma_eol (parser
);
12981 c_parser_error (parser
, "expected %<declare%>");
12982 c_parser_skip_to_pragma_eol (parser
);
12985 c_parser_skip_to_pragma_eol (parser
);
12986 if (!current_omp_declare_target_attribute
)
12987 error_at (loc
, "%<#pragma omp end declare target%> without corresponding "
12988 "%<#pragma omp declare target%>");
12990 current_omp_declare_target_attribute
--;
12995 #pragma omp declare reduction (reduction-id : typename-list : expression) \
12996 initializer-clause[opt] new-line
12998 initializer-clause:
12999 initializer (omp_priv = initializer)
13000 initializer (function-name (argument-list)) */
13003 c_parser_omp_declare_reduction (c_parser
*parser
, enum pragma_context context
)
13005 unsigned int tokens_avail
= 0, i
;
13006 vec
<tree
> types
= vNULL
;
13007 vec
<c_token
> clauses
= vNULL
;
13008 enum tree_code reduc_code
= ERROR_MARK
;
13009 tree reduc_id
= NULL_TREE
;
13011 location_t rloc
= c_parser_peek_token (parser
)->location
;
13013 if (context
== pragma_struct
|| context
== pragma_param
)
13015 error ("%<#pragma omp declare reduction%> not at file or block scope");
13019 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
13022 switch (c_parser_peek_token (parser
)->type
)
13025 reduc_code
= PLUS_EXPR
;
13028 reduc_code
= MULT_EXPR
;
13031 reduc_code
= MINUS_EXPR
;
13034 reduc_code
= BIT_AND_EXPR
;
13037 reduc_code
= BIT_XOR_EXPR
;
13040 reduc_code
= BIT_IOR_EXPR
;
13043 reduc_code
= TRUTH_ANDIF_EXPR
;
13046 reduc_code
= TRUTH_ORIF_EXPR
;
13050 p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
13051 if (strcmp (p
, "min") == 0)
13053 reduc_code
= MIN_EXPR
;
13056 if (strcmp (p
, "max") == 0)
13058 reduc_code
= MAX_EXPR
;
13061 reduc_id
= c_parser_peek_token (parser
)->value
;
13064 c_parser_error (parser
,
13065 "expected %<+%>, %<*%>, %<-%>, %<&%>, "
13066 "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or identifier");
13070 tree orig_reduc_id
, reduc_decl
;
13071 orig_reduc_id
= reduc_id
;
13072 reduc_id
= c_omp_reduction_id (reduc_code
, reduc_id
);
13073 reduc_decl
= c_omp_reduction_decl (reduc_id
);
13074 c_parser_consume_token (parser
);
13076 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>"))
13081 location_t loc
= c_parser_peek_token (parser
)->location
;
13082 struct c_type_name
*ctype
= c_parser_type_name (parser
);
13085 type
= groktypename (ctype
, NULL
, NULL
);
13086 if (type
== error_mark_node
)
13088 else if ((INTEGRAL_TYPE_P (type
)
13089 || TREE_CODE (type
) == REAL_TYPE
13090 || TREE_CODE (type
) == COMPLEX_TYPE
)
13091 && orig_reduc_id
== NULL_TREE
)
13092 error_at (loc
, "predeclared arithmetic type in "
13093 "%<#pragma omp declare reduction%>");
13094 else if (TREE_CODE (type
) == FUNCTION_TYPE
13095 || TREE_CODE (type
) == ARRAY_TYPE
)
13096 error_at (loc
, "function or array type in "
13097 "%<#pragma omp declare reduction%>");
13098 else if (TYPE_QUALS_NO_ADDR_SPACE (type
))
13099 error_at (loc
, "const, volatile or restrict qualified type in "
13100 "%<#pragma omp declare reduction%>");
13104 for (t
= DECL_INITIAL (reduc_decl
); t
; t
= TREE_CHAIN (t
))
13105 if (comptypes (TREE_PURPOSE (t
), type
))
13107 error_at (loc
, "redeclaration of %qs "
13108 "%<#pragma omp declare reduction%> for "
13110 IDENTIFIER_POINTER (reduc_id
)
13111 + sizeof ("omp declare reduction ") - 1,
13114 = DECL_SOURCE_LOCATION (TREE_VEC_ELT (TREE_VALUE (t
),
13116 error_at (ploc
, "previous %<#pragma omp declare "
13120 if (t
== NULL_TREE
)
13121 types
.safe_push (type
);
13123 if (c_parser_next_token_is (parser
, CPP_COMMA
))
13124 c_parser_consume_token (parser
);
13132 if (!c_parser_require (parser
, CPP_COLON
, "expected %<:%>")
13133 || types
.is_empty ())
13136 clauses
.release ();
13140 c_token
*token
= c_parser_peek_token (parser
);
13141 if (token
->type
== CPP_EOF
|| token
->type
== CPP_PRAGMA_EOL
)
13143 c_parser_consume_token (parser
);
13145 c_parser_skip_to_pragma_eol (parser
);
13149 if (types
.length () > 1)
13151 while (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
13153 c_token
*token
= c_parser_peek_token (parser
);
13154 if (token
->type
== CPP_EOF
)
13156 clauses
.safe_push (*token
);
13157 c_parser_consume_token (parser
);
13159 clauses
.safe_push (*c_parser_peek_token (parser
));
13160 c_parser_skip_to_pragma_eol (parser
);
13162 /* Make sure nothing tries to read past the end of the tokens. */
13164 memset (&eof_token
, 0, sizeof (eof_token
));
13165 eof_token
.type
= CPP_EOF
;
13166 clauses
.safe_push (eof_token
);
13167 clauses
.safe_push (eof_token
);
13170 int errs
= errorcount
;
13171 FOR_EACH_VEC_ELT (types
, i
, type
)
13173 tokens_avail
= parser
->tokens_avail
;
13174 gcc_assert (parser
->tokens
== &parser
->tokens_buf
[0]);
13175 if (!clauses
.is_empty ())
13177 parser
->tokens
= clauses
.address ();
13178 parser
->tokens_avail
= clauses
.length ();
13179 parser
->in_pragma
= true;
13182 bool nested
= current_function_decl
!= NULL_TREE
;
13184 c_push_function_context ();
13185 tree fndecl
= build_decl (BUILTINS_LOCATION
, FUNCTION_DECL
,
13186 reduc_id
, default_function_type
);
13187 current_function_decl
= fndecl
;
13188 allocate_struct_function (fndecl
, true);
13190 tree stmt
= push_stmt_list ();
13191 /* Intentionally BUILTINS_LOCATION, so that -Wshadow doesn't
13192 warn about these. */
13193 tree omp_out
= build_decl (BUILTINS_LOCATION
, VAR_DECL
,
13194 get_identifier ("omp_out"), type
);
13195 DECL_ARTIFICIAL (omp_out
) = 1;
13196 DECL_CONTEXT (omp_out
) = fndecl
;
13197 pushdecl (omp_out
);
13198 tree omp_in
= build_decl (BUILTINS_LOCATION
, VAR_DECL
,
13199 get_identifier ("omp_in"), type
);
13200 DECL_ARTIFICIAL (omp_in
) = 1;
13201 DECL_CONTEXT (omp_in
) = fndecl
;
13203 struct c_expr combiner
= c_parser_expression (parser
);
13204 struct c_expr initializer
;
13205 tree omp_priv
= NULL_TREE
, omp_orig
= NULL_TREE
;
13207 initializer
.value
= error_mark_node
;
13208 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
13210 else if (c_parser_next_token_is (parser
, CPP_NAME
)
13211 && strcmp (IDENTIFIER_POINTER
13212 (c_parser_peek_token (parser
)->value
),
13213 "initializer") == 0)
13215 c_parser_consume_token (parser
);
13218 omp_priv
= build_decl (BUILTINS_LOCATION
, VAR_DECL
,
13219 get_identifier ("omp_priv"), type
);
13220 DECL_ARTIFICIAL (omp_priv
) = 1;
13221 DECL_INITIAL (omp_priv
) = error_mark_node
;
13222 DECL_CONTEXT (omp_priv
) = fndecl
;
13223 pushdecl (omp_priv
);
13224 omp_orig
= build_decl (BUILTINS_LOCATION
, VAR_DECL
,
13225 get_identifier ("omp_orig"), type
);
13226 DECL_ARTIFICIAL (omp_orig
) = 1;
13227 DECL_CONTEXT (omp_orig
) = fndecl
;
13228 pushdecl (omp_orig
);
13229 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
13231 else if (!c_parser_next_token_is (parser
, CPP_NAME
))
13233 c_parser_error (parser
, "expected %<omp_priv%> or "
13237 else if (strcmp (IDENTIFIER_POINTER
13238 (c_parser_peek_token (parser
)->value
),
13241 if (c_parser_peek_2nd_token (parser
)->type
!= CPP_OPEN_PAREN
13242 || c_parser_peek_token (parser
)->id_kind
!= C_ID_ID
)
13244 c_parser_error (parser
, "expected function-name %<(%>");
13248 initializer
= c_parser_postfix_expression (parser
);
13249 if (initializer
.value
13250 && TREE_CODE (initializer
.value
) == CALL_EXPR
)
13253 tree c
= initializer
.value
;
13254 for (j
= 0; j
< call_expr_nargs (c
); j
++)
13255 if (TREE_CODE (CALL_EXPR_ARG (c
, j
)) == ADDR_EXPR
13256 && TREE_OPERAND (CALL_EXPR_ARG (c
, j
), 0) == omp_priv
)
13258 if (j
== call_expr_nargs (c
))
13259 error ("one of the initializer call arguments should be "
13265 c_parser_consume_token (parser
);
13266 if (!c_parser_require (parser
, CPP_EQ
, "expected %<=%>"))
13270 tree st
= push_stmt_list ();
13271 start_init (omp_priv
, NULL_TREE
, 0);
13272 location_t loc
= c_parser_peek_token (parser
)->location
;
13273 struct c_expr init
= c_parser_initializer (parser
);
13275 finish_decl (omp_priv
, loc
, init
.value
,
13276 init
.original_type
, NULL_TREE
);
13277 pop_stmt_list (st
);
13281 && !c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
13287 c_parser_skip_to_pragma_eol (parser
);
13289 tree t
= tree_cons (type
, make_tree_vec (omp_priv
? 6 : 3),
13290 DECL_INITIAL (reduc_decl
));
13291 DECL_INITIAL (reduc_decl
) = t
;
13292 DECL_SOURCE_LOCATION (omp_out
) = rloc
;
13293 TREE_VEC_ELT (TREE_VALUE (t
), 0) = omp_out
;
13294 TREE_VEC_ELT (TREE_VALUE (t
), 1) = omp_in
;
13295 TREE_VEC_ELT (TREE_VALUE (t
), 2) = combiner
.value
;
13296 walk_tree (&combiner
.value
, c_check_omp_declare_reduction_r
,
13297 &TREE_VEC_ELT (TREE_VALUE (t
), 0), NULL
);
13300 DECL_SOURCE_LOCATION (omp_priv
) = rloc
;
13301 TREE_VEC_ELT (TREE_VALUE (t
), 3) = omp_priv
;
13302 TREE_VEC_ELT (TREE_VALUE (t
), 4) = omp_orig
;
13303 TREE_VEC_ELT (TREE_VALUE (t
), 5) = initializer
.value
;
13304 walk_tree (&initializer
.value
, c_check_omp_declare_reduction_r
,
13305 &TREE_VEC_ELT (TREE_VALUE (t
), 3), NULL
);
13306 walk_tree (&DECL_INITIAL (omp_priv
),
13307 c_check_omp_declare_reduction_r
,
13308 &TREE_VEC_ELT (TREE_VALUE (t
), 3), NULL
);
13312 pop_stmt_list (stmt
);
13314 if (cfun
->language
!= NULL
)
13316 ggc_free (cfun
->language
);
13317 cfun
->language
= NULL
;
13320 current_function_decl
= NULL_TREE
;
13322 c_pop_function_context ();
13324 if (!clauses
.is_empty ())
13326 parser
->tokens
= &parser
->tokens_buf
[0];
13327 parser
->tokens_avail
= tokens_avail
;
13331 if (errs
!= errorcount
)
13335 clauses
.release ();
13341 #pragma omp declare simd declare-simd-clauses[optseq] new-line
13342 #pragma omp declare reduction (reduction-id : typename-list : expression) \
13343 initializer-clause[opt] new-line
13344 #pragma omp declare target new-line */
13347 c_parser_omp_declare (c_parser
*parser
, enum pragma_context context
)
13349 c_parser_consume_pragma (parser
);
13350 if (c_parser_next_token_is (parser
, CPP_NAME
))
13352 const char *p
= IDENTIFIER_POINTER (c_parser_peek_token (parser
)->value
);
13353 if (strcmp (p
, "simd") == 0)
13355 /* c_parser_consume_token (parser); done in
13356 c_parser_omp_declare_simd. */
13357 c_parser_omp_declare_simd (parser
, context
);
13360 if (strcmp (p
, "reduction") == 0)
13362 c_parser_consume_token (parser
);
13363 c_parser_omp_declare_reduction (parser
, context
);
13366 if (!flag_openmp
) /* flag_openmp_simd */
13368 c_parser_skip_to_pragma_eol (parser
);
13371 if (strcmp (p
, "target") == 0)
13373 c_parser_consume_token (parser
);
13374 c_parser_omp_declare_target (parser
);
13379 c_parser_error (parser
, "expected %<simd%> or %<reduction%> "
13381 c_parser_skip_to_pragma_eol (parser
);
13384 /* Main entry point to parsing most OpenMP pragmas. */
13387 c_parser_omp_construct (c_parser
*parser
)
13389 enum pragma_kind p_kind
;
13392 char p_name
[sizeof "#pragma omp teams distribute parallel for simd"];
13393 omp_clause_mask
mask (0);
13395 loc
= c_parser_peek_token (parser
)->location
;
13396 p_kind
= c_parser_peek_token (parser
)->pragma_kind
;
13397 c_parser_consume_pragma (parser
);
13401 case PRAGMA_OMP_ATOMIC
:
13402 c_parser_omp_atomic (loc
, parser
);
13404 case PRAGMA_OMP_CRITICAL
:
13405 stmt
= c_parser_omp_critical (loc
, parser
);
13407 case PRAGMA_OMP_DISTRIBUTE
:
13408 strcpy (p_name
, "#pragma omp");
13409 stmt
= c_parser_omp_distribute (loc
, parser
, p_name
, mask
, NULL
);
13411 case PRAGMA_OMP_FOR
:
13412 strcpy (p_name
, "#pragma omp");
13413 stmt
= c_parser_omp_for (loc
, parser
, p_name
, mask
, NULL
);
13415 case PRAGMA_OMP_MASTER
:
13416 stmt
= c_parser_omp_master (loc
, parser
);
13418 case PRAGMA_OMP_ORDERED
:
13419 stmt
= c_parser_omp_ordered (loc
, parser
);
13421 case PRAGMA_OMP_PARALLEL
:
13422 strcpy (p_name
, "#pragma omp");
13423 stmt
= c_parser_omp_parallel (loc
, parser
, p_name
, mask
, NULL
);
13425 case PRAGMA_OMP_SECTIONS
:
13426 strcpy (p_name
, "#pragma omp");
13427 stmt
= c_parser_omp_sections (loc
, parser
, p_name
, mask
, NULL
);
13429 case PRAGMA_OMP_SIMD
:
13430 strcpy (p_name
, "#pragma omp");
13431 stmt
= c_parser_omp_simd (loc
, parser
, p_name
, mask
, NULL
);
13433 case PRAGMA_OMP_SINGLE
:
13434 stmt
= c_parser_omp_single (loc
, parser
);
13436 case PRAGMA_OMP_TASK
:
13437 stmt
= c_parser_omp_task (loc
, parser
);
13439 case PRAGMA_OMP_TASKGROUP
:
13440 stmt
= c_parser_omp_taskgroup (parser
);
13442 case PRAGMA_OMP_TEAMS
:
13443 strcpy (p_name
, "#pragma omp");
13444 stmt
= c_parser_omp_teams (loc
, parser
, p_name
, mask
, NULL
);
13447 gcc_unreachable ();
13451 gcc_assert (EXPR_LOCATION (stmt
) != UNKNOWN_LOCATION
);
13456 # pragma omp threadprivate (variable-list) */
13459 c_parser_omp_threadprivate (c_parser
*parser
)
13464 c_parser_consume_pragma (parser
);
13465 loc
= c_parser_peek_token (parser
)->location
;
13466 vars
= c_parser_omp_var_list_parens (parser
, OMP_CLAUSE_ERROR
, NULL
);
13468 /* Mark every variable in VARS to be assigned thread local storage. */
13469 for (t
= vars
; t
; t
= TREE_CHAIN (t
))
13471 tree v
= TREE_PURPOSE (t
);
13473 /* FIXME diagnostics: Ideally we should keep individual
13474 locations for all the variables in the var list to make the
13475 following errors more precise. Perhaps
13476 c_parser_omp_var_list_parens() should construct a list of
13477 locations to go along with the var list. */
13479 /* If V had already been marked threadprivate, it doesn't matter
13480 whether it had been used prior to this point. */
13481 if (TREE_CODE (v
) != VAR_DECL
)
13482 error_at (loc
, "%qD is not a variable", v
);
13483 else if (TREE_USED (v
) && !C_DECL_THREADPRIVATE_P (v
))
13484 error_at (loc
, "%qE declared %<threadprivate%> after first use", v
);
13485 else if (! TREE_STATIC (v
) && ! DECL_EXTERNAL (v
))
13486 error_at (loc
, "automatic variable %qE cannot be %<threadprivate%>", v
);
13487 else if (TREE_TYPE (v
) == error_mark_node
)
13489 else if (! COMPLETE_TYPE_P (TREE_TYPE (v
)))
13490 error_at (loc
, "%<threadprivate%> %qE has incomplete type", v
);
13493 if (! DECL_THREAD_LOCAL_P (v
))
13495 DECL_TLS_MODEL (v
) = decl_default_tls_model (v
);
13496 /* If rtl has been already set for this var, call
13497 make_decl_rtl once again, so that encode_section_info
13498 has a chance to look at the new decl flags. */
13499 if (DECL_RTL_SET_P (v
))
13502 C_DECL_THREADPRIVATE_P (v
) = 1;
13506 c_parser_skip_to_pragma_eol (parser
);
13509 /* Cilk Plus <#pragma simd> parsing routines. */
13511 /* Helper function for c_parser_pragma. Perform some sanity checking
13512 for <#pragma simd> constructs. Returns FALSE if there was a
13516 c_parser_cilk_verify_simd (c_parser
*parser
,
13517 enum pragma_context context
)
13519 if (!flag_enable_cilkplus
)
13521 warning (0, "pragma simd ignored because -fcilkplus is not enabled");
13522 c_parser_skip_until_found (parser
, CPP_PRAGMA_EOL
, NULL
);
13525 if (context
== pragma_external
)
13527 c_parser_error (parser
,"pragma simd must be inside a function");
13528 c_parser_skip_until_found (parser
, CPP_PRAGMA_EOL
, NULL
);
13535 This function is shared by SIMD-enabled functions and #pragma simd.
13536 If IS_SIMD_FN is true then it is parsing a SIMD-enabled function and
13537 CLAUSES is unused. The main purpose of this function is to parse a
13538 vectorlength attribute or clause and check for parse errors.
13539 When IS_SIMD_FN is true then the function is merely caching the tokens
13540 in PARSER->CILK_SIMD_FN_TOKENS. If errors are found then the token
13541 cache is cleared since there is no reason to continue.
13543 vectorlength ( constant-expression ) */
13546 c_parser_cilk_clause_vectorlength (c_parser
*parser
, tree clauses
,
13550 check_no_duplicate_clause (clauses
, OMP_CLAUSE_SIMDLEN
, "vectorlength");
13552 /* The vectorlength clause behaves exactly like OpenMP's safelen
13553 clause. Represent it in OpenMP terms. */
13554 check_no_duplicate_clause (clauses
, OMP_CLAUSE_SAFELEN
, "vectorlength");
13556 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
13559 location_t loc
= c_parser_peek_token (parser
)->location
;
13560 tree expr
= c_parser_expr_no_commas (parser
, NULL
).value
;
13561 expr
= c_fully_fold (expr
, false, NULL
);
13563 /* If expr is an error_mark_node then the above function would have
13564 emitted an error. No reason to do it twice. */
13565 if (expr
== error_mark_node
)
13567 else if (!TREE_TYPE (expr
)
13568 || !TREE_CONSTANT (expr
)
13569 || !INTEGRAL_TYPE_P (TREE_TYPE (expr
)))
13571 error_at (loc
, "vectorlength must be an integer constant");
13572 else if (exact_log2 (TREE_INT_CST_LOW (expr
)) == -1)
13573 error_at (loc
, "vectorlength must be a power of 2");
13578 tree u
= build_omp_clause (loc
, OMP_CLAUSE_SIMDLEN
);
13579 OMP_CLAUSE_SIMDLEN_EXPR (u
) = expr
;
13580 OMP_CLAUSE_CHAIN (u
) = clauses
;
13585 tree u
= build_omp_clause (loc
, OMP_CLAUSE_SAFELEN
);
13586 OMP_CLAUSE_SAFELEN_EXPR (u
) = expr
;
13587 OMP_CLAUSE_CHAIN (u
) = clauses
;
13592 c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
13598 linear ( simd-linear-variable-list )
13600 simd-linear-variable-list:
13601 simd-linear-variable
13602 simd-linear-variable-list , simd-linear-variable
13604 simd-linear-variable:
13606 id-expression : simd-linear-step
13609 conditional-expression */
13612 c_parser_cilk_clause_linear (c_parser
*parser
, tree clauses
)
13614 if (!c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
13617 location_t loc
= c_parser_peek_token (parser
)->location
;
13619 if (c_parser_next_token_is_not (parser
, CPP_NAME
)
13620 || c_parser_peek_token (parser
)->id_kind
!= C_ID_ID
)
13621 c_parser_error (parser
, "expected identifier");
13623 while (c_parser_next_token_is (parser
, CPP_NAME
)
13624 && c_parser_peek_token (parser
)->id_kind
== C_ID_ID
)
13626 tree var
= lookup_name (c_parser_peek_token (parser
)->value
);
13630 undeclared_variable (c_parser_peek_token (parser
)->location
,
13631 c_parser_peek_token (parser
)->value
);
13632 c_parser_consume_token (parser
);
13634 else if (var
== error_mark_node
)
13635 c_parser_consume_token (parser
);
13638 tree step
= integer_one_node
;
13640 /* Parse the linear step if present. */
13641 if (c_parser_peek_2nd_token (parser
)->type
== CPP_COLON
)
13643 c_parser_consume_token (parser
);
13644 c_parser_consume_token (parser
);
13646 tree expr
= c_parser_expr_no_commas (parser
, NULL
).value
;
13647 expr
= c_fully_fold (expr
, false, NULL
);
13649 if (TREE_TYPE (expr
)
13650 && INTEGRAL_TYPE_P (TREE_TYPE (expr
))
13651 && (TREE_CONSTANT (expr
)
13655 c_parser_error (parser
,
13656 "step size must be an integer constant "
13657 "expression or an integer variable");
13660 c_parser_consume_token (parser
);
13662 /* Use OMP_CLAUSE_LINEAR, which has the same semantics. */
13663 tree u
= build_omp_clause (loc
, OMP_CLAUSE_LINEAR
);
13664 OMP_CLAUSE_DECL (u
) = var
;
13665 OMP_CLAUSE_LINEAR_STEP (u
) = step
;
13666 OMP_CLAUSE_CHAIN (u
) = clauses
;
13670 if (c_parser_next_token_is_not (parser
, CPP_COMMA
))
13673 c_parser_consume_token (parser
);
13676 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, "expected %<)%>");
13681 /* Returns the name of the next clause. If the clause is not
13682 recognized SIMD_OMP_CLAUSE_NONE is returned and the next token is
13683 not consumed. Otherwise, the appropriate pragma_simd_clause is
13684 returned and the token is consumed. */
13686 static pragma_omp_clause
13687 c_parser_cilk_clause_name (c_parser
*parser
)
13689 pragma_omp_clause result
;
13690 c_token
*token
= c_parser_peek_token (parser
);
13692 if (!token
->value
|| token
->type
!= CPP_NAME
)
13693 return PRAGMA_CILK_CLAUSE_NONE
;
13695 const char *p
= IDENTIFIER_POINTER (token
->value
);
13697 if (!strcmp (p
, "vectorlength"))
13698 result
= PRAGMA_CILK_CLAUSE_VECTORLENGTH
;
13699 else if (!strcmp (p
, "linear"))
13700 result
= PRAGMA_CILK_CLAUSE_LINEAR
;
13701 else if (!strcmp (p
, "private"))
13702 result
= PRAGMA_CILK_CLAUSE_PRIVATE
;
13703 else if (!strcmp (p
, "firstprivate"))
13704 result
= PRAGMA_CILK_CLAUSE_FIRSTPRIVATE
;
13705 else if (!strcmp (p
, "lastprivate"))
13706 result
= PRAGMA_CILK_CLAUSE_LASTPRIVATE
;
13707 else if (!strcmp (p
, "reduction"))
13708 result
= PRAGMA_CILK_CLAUSE_REDUCTION
;
13710 return PRAGMA_CILK_CLAUSE_NONE
;
13712 c_parser_consume_token (parser
);
13716 /* Parse all #<pragma simd> clauses. Return the list of clauses
13720 c_parser_cilk_all_clauses (c_parser
*parser
)
13722 tree clauses
= NULL
;
13724 while (c_parser_next_token_is_not (parser
, CPP_PRAGMA_EOL
))
13726 pragma_omp_clause c_kind
;
13728 c_kind
= c_parser_cilk_clause_name (parser
);
13732 case PRAGMA_CILK_CLAUSE_VECTORLENGTH
:
13733 clauses
= c_parser_cilk_clause_vectorlength (parser
, clauses
, false);
13735 case PRAGMA_CILK_CLAUSE_LINEAR
:
13736 clauses
= c_parser_cilk_clause_linear (parser
, clauses
);
13738 case PRAGMA_CILK_CLAUSE_PRIVATE
:
13739 /* Use the OpenMP counterpart. */
13740 clauses
= c_parser_omp_clause_private (parser
, clauses
);
13742 case PRAGMA_CILK_CLAUSE_FIRSTPRIVATE
:
13743 /* Use the OpenMP counterpart. */
13744 clauses
= c_parser_omp_clause_firstprivate (parser
, clauses
);
13746 case PRAGMA_CILK_CLAUSE_LASTPRIVATE
:
13747 /* Use the OpenMP counterpart. */
13748 clauses
= c_parser_omp_clause_lastprivate (parser
, clauses
);
13750 case PRAGMA_CILK_CLAUSE_REDUCTION
:
13751 /* Use the OpenMP counterpart. */
13752 clauses
= c_parser_omp_clause_reduction (parser
, clauses
);
13755 c_parser_error (parser
, "expected %<#pragma simd%> clause");
13761 c_parser_skip_to_pragma_eol (parser
);
13762 return c_finish_cilk_clauses (clauses
);
13765 /* Main entry point for parsing Cilk Plus <#pragma simd> for
13769 c_parser_cilk_simd (c_parser
*parser
)
13771 tree clauses
= c_parser_cilk_all_clauses (parser
);
13772 tree block
= c_begin_compound_stmt (true);
13773 location_t loc
= c_parser_peek_token (parser
)->location
;
13774 c_parser_omp_for_loop (loc
, parser
, CILK_SIMD
, clauses
, NULL
);
13775 block
= c_end_compound_stmt (loc
, block
, true);
13779 /* Parse a transaction attribute (GCC Extension).
13781 transaction-attribute:
13785 The transactional memory language description is written for C++,
13786 and uses the C++0x attribute syntax. For compatibility, allow the
13787 bracket style for transactions in C as well. */
13790 c_parser_transaction_attributes (c_parser
*parser
)
13792 tree attr_name
, attr
= NULL
;
13794 if (c_parser_next_token_is_keyword (parser
, RID_ATTRIBUTE
))
13795 return c_parser_attributes (parser
);
13797 if (!c_parser_next_token_is (parser
, CPP_OPEN_SQUARE
))
13799 c_parser_consume_token (parser
);
13800 if (!c_parser_require (parser
, CPP_OPEN_SQUARE
, "expected %<[%>"))
13803 attr_name
= c_parser_attribute_any_word (parser
);
13806 c_parser_consume_token (parser
);
13807 attr
= build_tree_list (attr_name
, NULL_TREE
);
13810 c_parser_error (parser
, "expected identifier");
13812 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, "expected %<]%>");
13814 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, "expected %<]%>");
13818 /* Parse a __transaction_atomic or __transaction_relaxed statement
13821 transaction-statement:
13822 __transaction_atomic transaction-attribute[opt] compound-statement
13823 __transaction_relaxed compound-statement
13825 Note that the only valid attribute is: "outer".
13829 c_parser_transaction (c_parser
*parser
, enum rid keyword
)
13831 unsigned int old_in
= parser
->in_transaction
;
13832 unsigned int this_in
= 1, new_in
;
13833 location_t loc
= c_parser_peek_token (parser
)->location
;
13836 gcc_assert ((keyword
== RID_TRANSACTION_ATOMIC
13837 || keyword
== RID_TRANSACTION_RELAXED
)
13838 && c_parser_next_token_is_keyword (parser
, keyword
));
13839 c_parser_consume_token (parser
);
13841 if (keyword
== RID_TRANSACTION_RELAXED
)
13842 this_in
|= TM_STMT_ATTR_RELAXED
;
13845 attrs
= c_parser_transaction_attributes (parser
);
13847 this_in
|= parse_tm_stmt_attr (attrs
, TM_STMT_ATTR_OUTER
);
13850 /* Keep track if we're in the lexical scope of an outer transaction. */
13851 new_in
= this_in
| (old_in
& TM_STMT_ATTR_OUTER
);
13853 parser
->in_transaction
= new_in
;
13854 stmt
= c_parser_compound_statement (parser
);
13855 parser
->in_transaction
= old_in
;
13858 stmt
= c_finish_transaction (loc
, stmt
, this_in
);
13860 error_at (loc
, (keyword
== RID_TRANSACTION_ATOMIC
?
13861 "%<__transaction_atomic%> without transactional memory support enabled"
13862 : "%<__transaction_relaxed %> "
13863 "without transactional memory support enabled"));
13868 /* Parse a __transaction_atomic or __transaction_relaxed expression
13871 transaction-expression:
13872 __transaction_atomic ( expression )
13873 __transaction_relaxed ( expression )
13876 static struct c_expr
13877 c_parser_transaction_expression (c_parser
*parser
, enum rid keyword
)
13880 unsigned int old_in
= parser
->in_transaction
;
13881 unsigned int this_in
= 1;
13882 location_t loc
= c_parser_peek_token (parser
)->location
;
13885 gcc_assert ((keyword
== RID_TRANSACTION_ATOMIC
13886 || keyword
== RID_TRANSACTION_RELAXED
)
13887 && c_parser_next_token_is_keyword (parser
, keyword
));
13888 c_parser_consume_token (parser
);
13890 if (keyword
== RID_TRANSACTION_RELAXED
)
13891 this_in
|= TM_STMT_ATTR_RELAXED
;
13894 attrs
= c_parser_transaction_attributes (parser
);
13896 this_in
|= parse_tm_stmt_attr (attrs
, 0);
13899 parser
->in_transaction
= this_in
;
13900 if (c_parser_require (parser
, CPP_OPEN_PAREN
, "expected %<(%>"))
13902 tree expr
= c_parser_expression (parser
).value
;
13903 ret
.original_type
= TREE_TYPE (expr
);
13904 ret
.value
= build1 (TRANSACTION_EXPR
, ret
.original_type
, expr
);
13905 if (this_in
& TM_STMT_ATTR_RELAXED
)
13906 TRANSACTION_EXPR_RELAXED (ret
.value
) = 1;
13907 SET_EXPR_LOCATION (ret
.value
, loc
);
13908 ret
.original_code
= TRANSACTION_EXPR
;
13909 if (!c_parser_require (parser
, CPP_CLOSE_PAREN
, "expected %<)%>"))
13911 c_parser_skip_until_found (parser
, CPP_CLOSE_PAREN
, NULL
);
13918 ret
.value
= error_mark_node
;
13919 ret
.original_code
= ERROR_MARK
;
13920 ret
.original_type
= NULL
;
13922 parser
->in_transaction
= old_in
;
13925 error_at (loc
, (keyword
== RID_TRANSACTION_ATOMIC
?
13926 "%<__transaction_atomic%> without transactional memory support enabled"
13927 : "%<__transaction_relaxed %> "
13928 "without transactional memory support enabled"));
13933 /* Parse a __transaction_cancel statement (GCC Extension).
13935 transaction-cancel-statement:
13936 __transaction_cancel transaction-attribute[opt] ;
13938 Note that the only valid attribute is "outer".
13942 c_parser_transaction_cancel (c_parser
*parser
)
13944 location_t loc
= c_parser_peek_token (parser
)->location
;
13946 bool is_outer
= false;
13948 gcc_assert (c_parser_next_token_is_keyword (parser
, RID_TRANSACTION_CANCEL
));
13949 c_parser_consume_token (parser
);
13951 attrs
= c_parser_transaction_attributes (parser
);
13953 is_outer
= (parse_tm_stmt_attr (attrs
, TM_STMT_ATTR_OUTER
) != 0);
13957 error_at (loc
, "%<__transaction_cancel%> without "
13958 "transactional memory support enabled");
13961 else if (parser
->in_transaction
& TM_STMT_ATTR_RELAXED
)
13963 error_at (loc
, "%<__transaction_cancel%> within a "
13964 "%<__transaction_relaxed%>");
13969 if ((parser
->in_transaction
& TM_STMT_ATTR_OUTER
) == 0
13970 && !is_tm_may_cancel_outer (current_function_decl
))
13972 error_at (loc
, "outer %<__transaction_cancel%> not "
13973 "within outer %<__transaction_atomic%>");
13974 error_at (loc
, " or a %<transaction_may_cancel_outer%> function");
13978 else if (parser
->in_transaction
== 0)
13980 error_at (loc
, "%<__transaction_cancel%> not within "
13981 "%<__transaction_atomic%>");
13985 return add_stmt (build_tm_abort_call (loc
, is_outer
));
13988 return build1 (NOP_EXPR
, void_type_node
, error_mark_node
);
13991 /* Parse a single source file. */
13994 c_parse_file (void)
13996 /* Use local storage to begin. If the first token is a pragma, parse it.
13997 If it is #pragma GCC pch_preprocess, then this will load a PCH file
13998 which will cause garbage collection. */
14001 memset (&tparser
, 0, sizeof tparser
);
14002 tparser
.tokens
= &tparser
.tokens_buf
[0];
14003 the_parser
= &tparser
;
14005 if (c_parser_peek_token (&tparser
)->pragma_kind
== PRAGMA_GCC_PCH_PREPROCESS
)
14006 c_parser_pragma_pch_preprocess (&tparser
);
14008 the_parser
= ggc_alloc_c_parser ();
14009 *the_parser
= tparser
;
14010 if (tparser
.tokens
== &tparser
.tokens_buf
[0])
14011 the_parser
->tokens
= &the_parser
->tokens_buf
[0];
14013 /* Initialize EH, if we've been told to do so. */
14014 if (flag_exceptions
)
14015 using_eh_for_cleanups ();
14017 c_parser_translation_unit (the_parser
);
14021 /* This function parses Cilk Plus array notation. The starting index is
14022 passed in INITIAL_INDEX and the array name is passes in ARRAY_VALUE. The
14023 return value of this function is a tree_node called VALUE_TREE of type
14024 ARRAY_NOTATION_REF. */
14027 c_parser_array_notation (location_t loc
, c_parser
*parser
, tree initial_index
,
14030 c_token
*token
= NULL
;
14031 tree start_index
= NULL_TREE
, end_index
= NULL_TREE
, stride
= NULL_TREE
;
14032 tree value_tree
= NULL_TREE
, type
= NULL_TREE
, array_type
= NULL_TREE
;
14033 tree array_type_domain
= NULL_TREE
;
14035 if (array_value
== error_mark_node
)
14037 /* No need to continue. If either of these 2 were true, then an error
14038 must be emitted already. Thus, no need to emit them twice. */
14039 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14040 return error_mark_node
;
14043 array_type
= TREE_TYPE (array_value
);
14044 gcc_assert (array_type
);
14045 type
= TREE_TYPE (array_type
);
14046 token
= c_parser_peek_token (parser
);
14048 if (token
->type
== CPP_EOF
)
14050 c_parser_error (parser
, "expected %<:%> or numeral");
14053 else if (token
->type
== CPP_COLON
)
14055 if (!initial_index
)
14057 /* If we are here, then we have a case like this A[:]. */
14058 c_parser_consume_token (parser
);
14059 if (TREE_CODE (array_type
) == POINTER_TYPE
)
14061 error_at (loc
, "start-index and length fields necessary for "
14062 "using array notations in pointers");
14063 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14064 return error_mark_node
;
14066 if (TREE_CODE (array_type
) == FUNCTION_TYPE
)
14068 error_at (loc
, "array notations cannot be used with function "
14070 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14071 return error_mark_node
;
14073 array_type_domain
= TYPE_DOMAIN (array_type
);
14075 if (!array_type_domain
)
14077 error_at (loc
, "start-index and length fields necessary for "
14078 "using array notations in dimensionless arrays");
14079 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14080 return error_mark_node
;
14083 start_index
= TYPE_MINVAL (array_type_domain
);
14084 start_index
= fold_build1 (CONVERT_EXPR
, ptrdiff_type_node
,
14086 if (!TYPE_MAXVAL (array_type_domain
)
14087 || !TREE_CONSTANT (TYPE_MAXVAL (array_type_domain
)))
14089 error_at (loc
, "start-index and length fields necessary for "
14090 "using array notations in variable-length arrays");
14091 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14092 return error_mark_node
;
14094 end_index
= TYPE_MAXVAL (array_type_domain
);
14095 end_index
= fold_build2 (PLUS_EXPR
, TREE_TYPE (end_index
),
14096 end_index
, integer_one_node
);
14097 end_index
= fold_build1 (CONVERT_EXPR
, ptrdiff_type_node
, end_index
);
14098 stride
= build_int_cst (integer_type_node
, 1);
14099 stride
= fold_build1 (CONVERT_EXPR
, ptrdiff_type_node
, stride
);
14101 else if (initial_index
!= error_mark_node
)
14103 /* If we are here, then there should be 2 possibilities:
14104 1. Array [EXPR : EXPR]
14105 2. Array [EXPR : EXPR : EXPR]
14107 start_index
= initial_index
;
14109 if (TREE_CODE (array_type
) == FUNCTION_TYPE
)
14111 error_at (loc
, "array notations cannot be used with function "
14113 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, NULL
);
14114 return error_mark_node
;
14116 c_parser_consume_token (parser
); /* consume the ':' */
14117 struct c_expr ce
= c_parser_expression (parser
);
14118 ce
= convert_lvalue_to_rvalue (loc
, ce
, false, false);
14119 end_index
= ce
.value
;
14120 if (!end_index
|| end_index
== error_mark_node
)
14122 c_parser_skip_to_end_of_block_or_statement (parser
);
14123 return error_mark_node
;
14125 if (c_parser_peek_token (parser
)->type
== CPP_COLON
)
14127 c_parser_consume_token (parser
);
14128 ce
= c_parser_expression (parser
);
14129 ce
= convert_lvalue_to_rvalue (loc
, ce
, false, false);
14131 if (!stride
|| stride
== error_mark_node
)
14133 c_parser_skip_to_end_of_block_or_statement (parser
);
14134 return error_mark_node
;
14139 c_parser_error (parser
, "expected array notation expression");
14142 c_parser_error (parser
, "expected array notation expression");
14144 c_parser_skip_until_found (parser
, CPP_CLOSE_SQUARE
, "expected %<]%>");
14146 value_tree
= build_array_notation_ref (loc
, array_value
, start_index
,
14147 end_index
, stride
, type
);
14148 if (value_tree
!= error_mark_node
)
14149 SET_EXPR_LOCATION (value_tree
, loc
);
14153 #include "gt-c-c-parser.h"