23 24#ifndef GCC_C_COMMON_H 25#define GCC_C_COMMON_H 26 27#include "splay-tree.h" 28#include "cpplib.h" 29 30/* Usage of TREE_LANG_FLAG_?: 31 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT). 32 TREE_NEGATED_INT (in INTEGER_CST). 33 IDENTIFIER_MARKED (used by search routines). 34 SCOPE_BEGIN_P (in SCOPE_STMT) 35 DECL_PRETTY_FUNCTION_P (in VAR_DECL) 36 NEW_FOR_SCOPE_P (in FOR_STMT) 37 ASM_INPUT_P (in ASM_STMT) 38 STMT_EXPR_NO_SCOPE (in STMT_EXPR) 39 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) 40 STMT_IS_FULL_EXPR_P (in _STMT) 41 2: STMT_LINENO_FOR_FN_P (in _STMT) 42 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT) 43 COMPOUND_STMT_BODY_BLOCK (in COMPOUND_STMT) 44 4: SCOPE_PARTIAL_P (in SCOPE_STMT) 45*/ 46 47/* Reserved identifiers. This is the union of all the keywords for C, 48 C++, and Objective C. All the type modifiers have to be in one 49 block at the beginning, because they are used as mask bits. There 50 are 27 type modifiers; if we add many more we will have to redesign 51 the mask mechanism. */ 52 53enum rid 54{ 55 /* Modifiers: */ 56 /* C, in empirical order of frequency. */ 57 RID_STATIC = 0, 58 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, 59 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, 60 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, 61 62 /* C extensions */ 63 RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX, 64 65 /* C++ */ 66 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, 67 68 /* ObjC */ 69 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, 70 71 /* C */ 72 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 73 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 74 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 75 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 76 RID_SIZEOF, 77 78 /* C extensions */ 79 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 80 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE, 81 RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P, 82 83 /* Too many ways of getting the name of a function as a string */ 84 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 85 86 /* C++ */ 87 RID_BOOL, RID_WCHAR, RID_CLASS, 88 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 89 RID_TEMPLATE, RID_NULL, RID_CATCH, 90 RID_DELETE, RID_FALSE, RID_NAMESPACE, 91 RID_NEW, RID_OPERATOR, RID_THIS, 92 RID_THROW, RID_TRUE, RID_TRY, 93 RID_TYPENAME, RID_TYPEID, RID_USING, 94 95 /* casts */ 96 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 97 98 /* alternate spellings */ 99 RID_AND, RID_AND_EQ, RID_NOT, RID_NOT_EQ, 100 RID_OR, RID_OR_EQ, RID_XOR, RID_XOR_EQ, 101 RID_BITAND, RID_BITOR, RID_COMPL, 102 103 /* Objective C */ 104 RID_ID, RID_AT_ENCODE, RID_AT_END, 105 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 106 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, 107 RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE, 108 RID_AT_IMPLEMENTATION, 109 110 RID_MAX, 111 112 RID_FIRST_MODIFIER = RID_STATIC, 113 RID_LAST_MODIFIER = RID_ONEWAY, 114 115 RID_FIRST_AT = RID_AT_ENCODE, 116 RID_LAST_AT = RID_AT_IMPLEMENTATION, 117 RID_FIRST_PQ = RID_IN, 118 RID_LAST_PQ = RID_ONEWAY 119}; 120 121#define OBJC_IS_AT_KEYWORD(rid) \ 122 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \ 123 (unsigned int)(rid) <= (unsigned int)RID_LAST_AT) 124 125#define OBJC_IS_PQ_KEYWORD(rid) \ 126 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \ 127 (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ) 128 129/* The elements of `ridpointers' are identifier nodes for the reserved 130 type names and storage classes. It is indexed by a RID_... value. */ 131extern tree *ridpointers; 132 133/* Standard named or nameless data types of the C compiler. */ 134 135enum c_tree_index 136{ 137 CTI_WCHAR_TYPE, 138 CTI_SIGNED_WCHAR_TYPE, 139 CTI_UNSIGNED_WCHAR_TYPE, 140 CTI_WINT_TYPE, 141 CTI_C_SIZE_TYPE, /* The type used for the size_t typedef and the 142 result type of sizeof (an ordinary type without 143 TYPE_IS_SIZETYPE set, unlike the internal 144 sizetype). */ 145 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 146 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 147 CTI_INTMAX_TYPE, 148 CTI_UINTMAX_TYPE, 149 CTI_WIDEST_INT_LIT_TYPE, 150 CTI_WIDEST_UINT_LIT_TYPE, 151 152 CTI_CHAR_ARRAY_TYPE, 153 CTI_WCHAR_ARRAY_TYPE, 154 CTI_INT_ARRAY_TYPE, 155 CTI_STRING_TYPE, 156 CTI_CONST_STRING_TYPE, 157 158 /* Type for boolean expressions (bool in C++, int in C). */ 159 CTI_BOOLEAN_TYPE, 160 CTI_BOOLEAN_TRUE, 161 CTI_BOOLEAN_FALSE, 162 /* C99's _Bool type. */ 163 CTI_C_BOOL_TYPE, 164 CTI_C_BOOL_TRUE, 165 CTI_C_BOOL_FALSE, 166 CTI_DEFAULT_FUNCTION_TYPE, 167 168 CTI_G77_INTEGER_TYPE, 169 CTI_G77_UINTEGER_TYPE, 170 CTI_G77_LONGINT_TYPE, 171 CTI_G77_ULONGINT_TYPE, 172 173 /* These are not types, but we have to look them up all the time. */ 174 CTI_FUNCTION_NAME_DECL, 175 CTI_PRETTY_FUNCTION_NAME_DECL, 176 CTI_C99_FUNCTION_NAME_DECL, 177 CTI_SAVED_FUNCTION_NAME_DECLS, 178 179 CTI_VOID_ZERO, 180 181 CTI_MAX 182}; 183 184#define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code) 185 186/* Identifier part common to the C front ends. Inherits from 187 tree_identifier, despite appearances. */ 188struct c_common_identifier 189{ 190 struct tree_common common; 191 struct cpp_hashnode node; 192}; 193 194#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 195#define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] 196#define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] 197#define wint_type_node c_global_trees[CTI_WINT_TYPE] 198#define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE] 199#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 200#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 201#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 202#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 203#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 204#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 205 206#define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE] 207#define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE] 208#define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE] 209 210#define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE] 211#define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE] 212#define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE] 213 214#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 215#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 216#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] 217#define string_type_node c_global_trees[CTI_STRING_TYPE] 218#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 219 220#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 221 222/* g77 integer types, which which must be kept in sync with f/com.h */ 223#define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE] 224#define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE] 225#define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE] 226#define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE] 227 228#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 229#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 230#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 231#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 232 233/* A node for `((void) 0)'. */ 234#define void_zero_node c_global_trees[CTI_VOID_ZERO] 235 236extern tree c_global_trees[CTI_MAX]; 237 238/* Mark which labels are explicitly declared. 239 These may be shadowed, and may be referenced from nested functions. */ 240#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 241 242/* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a 243 warning if they undergo concatenation. */ 244#define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE) 245 246typedef enum c_language_kind 247{ 248 clk_c, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, 249 etc. */ 250 clk_cplusplus, /* ANSI/ISO C++ */ 251 clk_objective_c /* Objective C */ 252} 253c_language_kind; 254 255/* Information about a statement tree. */ 256 257struct stmt_tree_s { 258 /* The last statement added to the tree. */ 259 tree x_last_stmt; 260 /* The type of the last expression statement. (This information is 261 needed to implement the statement-expression extension.) */ 262 tree x_last_expr_type; 263 /* The last filename we recorded. */ 264 const char *x_last_expr_filename; 265 /* In C++, Non-zero if we should treat statements as full 266 expressions. In particular, this variable is no-zero if at the 267 end of a statement we should destroy any temporaries created 268 during that statement. Similarly, if, at the end of a block, we 269 should destroy any local variables in this block. Normally, this 270 variable is non-zero, since those are the normal semantics of 271 C++. 272 273 However, in order to represent aggregate initialization code as 274 tree structure, we use statement-expressions. The statements 275 within the statement expression should not result in cleanups 276 being run until the entire enclosing statement is complete. 277 278 This flag has no effect in C. */ 279 int stmts_are_full_exprs_p; 280}; 281 282typedef struct stmt_tree_s *stmt_tree; 283 284/* Global state pertinent to the current function. Some C dialects 285 extend this structure with additional fields. */ 286 287struct language_function { 288 /* While we are parsing the function, this contains information 289 about the statement-tree that we are building. */ 290 struct stmt_tree_s x_stmt_tree; 291 /* The stack of SCOPE_STMTs for the current function. */ 292 tree x_scope_stmt_stack; 293}; 294 295/* When building a statement-tree, this is the last statement added to 296 the tree. */ 297 298#define last_tree (current_stmt_tree ()->x_last_stmt) 299 300/* The type of the last expression-statement we have seen. */ 301 302#define last_expr_type (current_stmt_tree ()->x_last_expr_type) 303 304/* The name of the last file we have seen. */ 305 306#define last_expr_filename (current_stmt_tree ()->x_last_expr_filename) 307 308/* LAST_TREE contains the last statement parsed. These are chained 309 together through the TREE_CHAIN field, but often need to be 310 re-organized since the parse is performed bottom-up. This macro 311 makes LAST_TREE the indicated SUBSTMT of STMT. */ 312 313#define RECHAIN_STMTS(stmt, substmt) \ 314 do { \ 315 substmt = TREE_CHAIN (stmt); \ 316 TREE_CHAIN (stmt) = NULL_TREE; \ 317 last_tree = stmt; \ 318 } while (0) 319 320/* Language-specific hooks. */ 321 322extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); 323extern void (*lang_expand_stmt) PARAMS ((tree)); 324extern void (*lang_expand_decl_stmt) PARAMS ((tree)); 325extern void (*lang_expand_function_end) PARAMS ((void)); 326 327/* Callback that determines if it's ok for a function to have no 328 noreturn attribute. */ 329extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree)); 330 331 332extern stmt_tree current_stmt_tree PARAMS ((void)); 333extern tree *current_scope_stmt_stack PARAMS ((void)); 334extern void begin_stmt_tree PARAMS ((tree *)); 335extern tree add_stmt PARAMS ((tree)); 336extern void add_decl_stmt PARAMS ((tree)); 337extern tree add_scope_stmt PARAMS ((int, int)); 338extern void finish_stmt_tree PARAMS ((tree *)); 339 340extern int statement_code_p PARAMS ((enum tree_code)); 341extern tree walk_stmt_tree PARAMS ((tree *, 342 walk_tree_fn, 343 void *)); 344extern void prep_stmt PARAMS ((tree)); 345extern void expand_stmt PARAMS ((tree)); 346extern void mark_stmt_tree PARAMS ((void *)); 347extern void shadow_warning PARAMS ((const char *, 348 tree, tree)); 349extern tree c_begin_if_stmt PARAMS ((void)); 350extern tree c_begin_while_stmt PARAMS ((void)); 351extern void c_finish_while_stmt_cond PARAMS ((tree, tree)); 352 353 354/* Extra information associated with a DECL. Other C dialects extend 355 this structure in various ways. The C front-end only uses this 356 structure for FUNCTION_DECLs; all other DECLs have a NULL 357 DECL_LANG_SPECIFIC field. */ 358 359struct c_lang_decl { 360 unsigned declared_inline : 1; 361}; 362 363/* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is 364 the approximate number of statements in this function. There is 365 no need for this number to be exact; it is only used in various 366 heuristics regarding optimization. */ 367#define DECL_NUM_STMTS(NODE) \ 368 (FUNCTION_DECL_CHECK (NODE)->decl.u1.i) 369 370extern void c_mark_lang_decl PARAMS ((struct c_lang_decl *)); 371 372/* The variant of the C language being processed. Each C language 373 front-end defines this variable. */ 374 375extern c_language_kind c_language; 376 377/* Nonzero means give string constants the type `const char *', rather 378 than `char *'. */ 379 380extern int flag_const_strings; 381 382/* Nonzero means give `double' the same size as `float'. */ 383 384extern int flag_short_double; 385 386/* Nonzero means give `wchar_t' the same size as `short'. */ 387 388extern int flag_short_wchar; 389 390/* Warn about *printf or *scanf format/argument anomalies. */ 391 392extern int warn_format; 393 394/* Warn about Y2K problems with strftime formats. */ 395 396extern int warn_format_y2k; 397 398/* Warn about excess arguments to formats. */ 399 400extern int warn_format_extra_args; 401 402/* Warn about non-literal format arguments. */ 403 404extern int warn_format_nonliteral; 405 406/* Warn about possible security problems with calls to format functions. */ 407 408extern int warn_format_security; 409 410/* Warn about possible violations of sequence point rules. */ 411 412extern int warn_sequence_point; 413 414/* Warn about functions which might be candidates for format attributes. */ 415 416extern int warn_missing_format_attribute; 417
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422/* Nonzero means warn about sizeof (function) or addition/subtraction 423 of function pointers. */ 424 425extern int warn_pointer_arith; 426 427/* Nonzero means to warn about compile-time division by zero. */ 428extern int warn_div_by_zero; 429 430/* Nonzero means do some things the same way PCC does. */ 431 432extern int flag_traditional; 433 434/* Nonzero means enable C89 Amendment 1 features. */ 435 436extern int flag_isoc94; 437 438/* Nonzero means use the ISO C99 dialect of C. */ 439 440extern int flag_isoc99; 441 442/* Nonzero means allow the BSD kernel printf enhancments. */ 443 444extern int flag_bsd_format; 445 446/* Nonzero means environment is hosted (i.e., not freestanding) */ 447 448extern int flag_hosted; 449 450/* Nonzero means add default format_arg attributes for functions not 451 in ISO C. */ 452 453extern int flag_noniso_default_format_attributes; 454 455/* Nonzero means don't recognize any builtin functions. */ 456 457extern int flag_no_builtin; 458 459/* Nonzero means don't recognize the non-ANSI builtin functions. 460 -ansi sets this. */ 461 462extern int flag_no_nonansi_builtin; 463 464/* Nonzero means warn about suggesting putting in ()'s. */ 465 466extern int warn_parentheses; 467 468/* Warn if a type conversion is done that might have confusing results. */ 469 470extern int warn_conversion; 471 472/* Nonzero means warn about usage of long long, 473 when `-pedantic' and not C99. */ 474 475extern int warn_long_long; 476 477/* C types are partitioned into three subsets: object, function, and 478 incomplete types. */ 479#define C_TYPE_OBJECT_P(type) \ 480 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 481 482#define C_TYPE_INCOMPLETE_P(type) \ 483 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 484 485#define C_TYPE_FUNCTION_P(type) \ 486 (TREE_CODE (type) == FUNCTION_TYPE) 487 488/* For convenience we define a single macro to identify the class of 489 object or incomplete types. */ 490#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 491 (!C_TYPE_FUNCTION_P (type)) 492 493/* Record in each node resulting from a binary operator 494 what operator was specified for it. */ 495#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) 496 497/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 498 ID is the identifier to use, NAME is the string. 499 TYPE_DEP indicates whether it depends on type of the function or not 500 (i.e. __PRETTY_FUNCTION__). */ 501 502extern tree (*make_fname_decl) PARAMS ((tree, int)); 503 504extern tree identifier_global_value PARAMS ((tree)); 505extern void record_builtin_type PARAMS ((enum rid, 506 const char *, tree)); 507extern tree build_void_list_node PARAMS ((void)); 508extern void start_fname_decls PARAMS ((void)); 509extern void finish_fname_decls PARAMS ((void)); 510extern const char *fname_as_string PARAMS ((int)); 511extern tree fname_decl PARAMS ((unsigned, tree)); 512extern const char *fname_string PARAMS ((unsigned)); 513 514extern void check_function_format PARAMS ((int *, tree, tree)); 515extern void set_Wformat PARAMS ((int)); 516extern tree handle_format_attribute PARAMS ((tree *, tree, tree, 517 int, bool *)); 518extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree, 519 int, bool *)); 520extern void c_common_insert_default_attributes PARAMS ((tree)); 521extern void c_apply_type_quals_to_decl PARAMS ((int, tree)); 522extern tree c_sizeof PARAMS ((tree)); 523extern tree c_alignof PARAMS ((tree)); 524extern tree c_alignof_expr PARAMS ((tree)); 525/* Print an error message for invalid operands to arith operation CODE. 526 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 527extern void binary_op_error PARAMS ((enum tree_code)); 528extern tree c_expand_expr_stmt PARAMS ((tree)); 529extern void c_expand_start_cond PARAMS ((tree, int, tree)); 530extern void c_finish_then PARAMS ((void)); 531extern void c_expand_start_else PARAMS ((void)); 532extern void c_finish_else PARAMS ((void)); 533extern void c_expand_end_cond PARAMS ((void)); 534/* Validate the expression after `case' and apply default promotions. */ 535extern tree check_case_value PARAMS ((tree)); 536/* Concatenate a list of STRING_CST nodes into one STRING_CST. */ 537extern tree combine_strings PARAMS ((tree)); 538extern void constant_expression_warning PARAMS ((tree)); 539extern tree convert_and_check PARAMS ((tree, tree)); 540extern void overflow_warning PARAMS ((tree)); 541extern void unsigned_conversion_warning PARAMS ((tree, tree)); 542 543/* Read the rest of the current #-directive line. */ 544extern char *get_directive_line PARAMS ((void)); 545#define GET_DIRECTIVE_LINE() get_directive_line () 546 547/* Subroutine of build_binary_op, used for comparison operations. 548 See if the operands have both been converted from subword integer types 549 and, if so, perhaps change them both back to their original type. */ 550extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *)); 551 552extern tree pointer_int_sum PARAMS ((enum tree_code, tree, tree)); 553extern unsigned int min_precision PARAMS ((tree, int)); 554 555/* Add qualifiers to a type, in the fashion for C. */ 556extern tree c_build_qualified_type PARAMS ((tree, int)); 557 558/* Build tree nodes and builtin functions common to both C and C++ language 559 frontends. */ 560extern void c_common_nodes_and_builtins PARAMS ((void)); 561 562extern void disable_builtin_function PARAMS ((const char *)); 563 564extern tree build_va_arg PARAMS ((tree, tree)); 565 566extern void c_common_init_options PARAMS ((enum c_language_kind)); 567extern void c_common_post_options PARAMS ((void)); 568extern const char *c_common_init PARAMS ((const char *)); 569extern void c_common_finish PARAMS ((void)); 570extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree)); 571extern bool c_promoting_integer_type_p PARAMS ((tree)); 572extern int self_promoting_args_p PARAMS ((tree)); 573extern tree simple_type_promotes_to PARAMS ((tree)); 574extern tree strip_array_types PARAMS ((tree)); 575 576/* These macros provide convenient access to the various _STMT nodes. */ 577 578/* Nonzero if this statement should be considered a full-expression, 579 i.e., if temporaries created during this statement should have 580 their destructors run at the end of this statement. (In C, this 581 will always be false, since there are no destructors.) */ 582#define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE)) 583 584/* IF_STMT accessors. These give access to the condition of the if 585 statement, the then block of the if statement, and the else block 586 of the if statement if it exists. */ 587#define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0) 588#define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1) 589#define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2) 590 591/* WHILE_STMT accessors. These give access to the condition of the 592 while statement and the body of the while statement, respectively. */ 593#define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) 594#define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) 595 596/* DO_STMT accessors. These give access to the condition of the do 597 statement and the body of the do statement, respectively. */ 598#define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) 599#define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) 600 601/* RETURN_STMT accessors. These give the expression associated with a 602 return statement, and whether it should be ignored when expanding 603 (as opposed to inlining). */ 604#define RETURN_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0) 605 606/* EXPR_STMT accessor. This gives the expression associated with an 607 expression statement. */ 608#define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0) 609 610/* FOR_STMT accessors. These give access to the init statement, 611 condition, update expression, and body of the for statement, 612 respectively. */ 613#define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) 614#define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) 615#define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) 616#define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) 617 618/* SWITCH_STMT accessors. These give access to the condition, body and 619 original condition type (before any compiler conversions) 620 of the switch statement, respectively. */ 621#define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) 622#define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) 623#define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) 624 625/* CASE_LABEL accessors. These give access to the high and low values 626 of a case label, respectively. */ 627#define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0) 628#define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1) 629#define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2) 630 631/* GOTO_STMT accessor. This gives access to the label associated with 632 a goto statement. */ 633#define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0) 634/* True for goto created artifically by the compiler. */ 635#define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE))) 636 637/* COMPOUND_STMT accessor. This gives access to the TREE_LIST of 638 statements associated with a compound statement. The result is the 639 first statement in the list. Succeeding nodes can be accessed by 640 calling TREE_CHAIN on a node in the list. */ 641#define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0) 642 643/* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the 644 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and 645 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the 646 statement. */ 647#define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0) 648#define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1) 649#define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2) 650#define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3) 651#define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4) 652 653/* DECL_STMT accessor. This gives access to the DECL associated with 654 the given declaration statement. */ 655#define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0) 656 657/* STMT_EXPR accessor. */ 658#define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0) 659 660/* Nonzero if this statement-expression does not have an associated scope. */ 661#define STMT_EXPR_NO_SCOPE(NODE) \ 662 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE)) 663 664/* LABEL_STMT accessor. This gives access to the label associated with 665 the given label statement. */ 666#define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0) 667 668/* COMPOUND_LITERAL_EXPR accessors. */ 669#define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \ 670 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) 671#define COMPOUND_LITERAL_EXPR_DECL(NODE) \ 672 DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE)) 673 674/* Nonzero if this SCOPE_STMT is for the beginning of a scope. */ 675#define SCOPE_BEGIN_P(NODE) \ 676 (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE))) 677 678/* Nonzero if this SCOPE_STMT is for the end of a scope. */ 679#define SCOPE_END_P(NODE) \ 680 (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE))) 681 682/* The BLOCK containing the declarations contained in this scope. */ 683#define SCOPE_STMT_BLOCK(NODE) \ 684 (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0)) 685 686/* Nonzero for a SCOPE_STMT if there were no variables in this scope. */ 687#define SCOPE_NULLIFIED_P(NODE) \ 688 (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE) 689 690/* Nonzero for a SCOPE_STMT which represents a lexical scope, but 691 which should be treated as non-existent from the point of view of 692 running cleanup actions. */ 693#define SCOPE_NO_CLEANUPS_P(NODE) \ 694 (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE))) 695 696/* Nonzero for a SCOPE_STMT if this statement is for a partial scope. 697 For example, in: 698 699 S s; 700 l: 701 S s2; 702 goto l; 703 704 there is (implicitly) a new scope after `l', even though there are 705 no curly braces. In particular, when we hit the goto, we must 706 destroy s2 and then re-construct it. For the implicit scope, 707 SCOPE_PARTIAL_P will be set. */ 708#define SCOPE_PARTIAL_P(NODE) \ 709 (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE))) 710 711/* Nonzero for an ASM_STMT if the assembly statement is volatile. */ 712#define ASM_VOLATILE_P(NODE) \ 713 (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE) 714 715/* The VAR_DECL to clean up in a CLEANUP_STMT. */ 716#define CLEANUP_DECL(NODE) \ 717 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0) 718/* The cleanup to run in a CLEANUP_STMT. */ 719#define CLEANUP_EXPR(NODE) \ 720 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1) 721 722/* The filename we are changing to as of this FILE_STMT. */ 723#define FILE_STMT_FILENAME_NODE(NODE) \ 724 (TREE_OPERAND (FILE_STMT_CHECK (NODE), 0)) 725#define FILE_STMT_FILENAME(NODE) \ 726 (IDENTIFIER_POINTER (FILE_STMT_FILENAME_NODE (NODE))) 727 728/* The line-number at which a statement began. But if 729 STMT_LINENO_FOR_FN_P does holds, then this macro gives the 730 line number for the end of the current function instead. */ 731#define STMT_LINENO(NODE) \ 732 (TREE_COMPLEXITY ((NODE))) 733 734/* If non-zero, the STMT_LINENO for NODE is the line at which the 735 function ended. */ 736#define STMT_LINENO_FOR_FN_P(NODE) \ 737 (TREE_LANG_FLAG_2 ((NODE))) 738 739/* Nonzero if we want the new ISO rules for pushing a new scope for `for' 740 initialization variables. */ 741#define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE)) 742 743/* Nonzero if we want to create an ASM_INPUT instead of an 744 ASM_OPERAND with no operands. */ 745#define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE)) 746 747#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, 748 749enum c_tree_code { 750 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE, 751#include "c-common.def" 752 LAST_C_TREE_CODE 753}; 754 755#undef DEFTREECODE 756 757extern void add_c_tree_codes PARAMS ((void)); 758extern void genrtl_do_pushlevel PARAMS ((void)); 759extern void genrtl_goto_stmt PARAMS ((tree)); 760extern void genrtl_expr_stmt PARAMS ((tree)); 761extern void genrtl_expr_stmt_value PARAMS ((tree, int, int)); 762extern void genrtl_decl_stmt PARAMS ((tree)); 763extern void genrtl_if_stmt PARAMS ((tree)); 764extern void genrtl_while_stmt PARAMS ((tree)); 765extern void genrtl_do_stmt PARAMS ((tree)); 766extern void genrtl_return_stmt PARAMS ((tree)); 767extern void genrtl_for_stmt PARAMS ((tree)); 768extern void genrtl_break_stmt PARAMS ((void)); 769extern void genrtl_continue_stmt PARAMS ((void)); 770extern void genrtl_scope_stmt PARAMS ((tree)); 771extern void genrtl_switch_stmt PARAMS ((tree)); 772extern void genrtl_case_label PARAMS ((tree)); 773extern void genrtl_compound_stmt PARAMS ((tree)); 774extern void genrtl_asm_stmt PARAMS ((tree, tree, 775 tree, tree, 776 tree, int)); 777extern void genrtl_decl_cleanup PARAMS ((tree)); 778extern int stmts_are_full_exprs_p PARAMS ((void)); 779extern int anon_aggr_type_p PARAMS ((tree)); 780 781/* For a VAR_DECL that is an anonymous union, these are the various 782 sub-variables that make up the anonymous union. */ 783#define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE)) 784 785/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 786#define DECL_C_BIT_FIELD(NODE) \ 787 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 788#define SET_DECL_C_BIT_FIELD(NODE) \ 789 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 790#define CLEAR_DECL_C_BIT_FIELD(NODE) \ 791 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 792 793/* In a VAR_DECL, nonzero if the decl is a register variable with 794 an explicit asm specification. */ 795#define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL)) 796 797extern void emit_local_var PARAMS ((tree)); 798extern void make_rtl_for_local_static PARAMS ((tree)); 799extern tree expand_cond PARAMS ((tree)); 800extern tree c_expand_return PARAMS ((tree)); 801extern tree do_case PARAMS ((tree, tree)); 802extern tree build_stmt PARAMS ((enum tree_code, ...)); 803extern tree build_case_label PARAMS ((tree, tree, tree)); 804extern tree build_continue_stmt PARAMS ((void)); 805extern tree build_break_stmt PARAMS ((void)); 806extern tree build_return_stmt PARAMS ((tree)); 807 808#define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE) 809 810/* Used by the C++ frontend to mark the block around the member 811 initializers and cleanups. */ 812#define COMPOUND_STMT_BODY_BLOCK(NODE) TREE_LANG_FLAG_3 (NODE) 813 814extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int)); 815 816/* These functions must be defined by each front-end which implements 817 a variant of the C language. They are used in c-common.c. */ 818 819extern tree build_unary_op PARAMS ((enum tree_code, 820 tree, int)); 821extern tree build_binary_op PARAMS ((enum tree_code, 822 tree, tree, int)); 823extern int lvalue_p PARAMS ((tree)); 824extern tree default_conversion PARAMS ((tree)); 825 826/* Given two integer or real types, return the type for their sum. 827 Given two compatible ANSI C types, returns the merged type. */ 828 829extern tree common_type PARAMS ((tree, tree)); 830 831extern tree expand_tree_builtin PARAMS ((tree, tree, tree)); 832 833extern tree decl_constant_value PARAMS ((tree)); 834 835/* Handle increment and decrement of boolean types. */ 836extern tree boolean_increment PARAMS ((enum tree_code, 837 tree)); 838 839/* Hook currently used only by the C++ front end to reset internal state 840 after entering or leaving a header file. */ 841extern void extract_interface_info PARAMS ((void)); 842 843extern void mark_c_language_function PARAMS ((struct language_function *)); 844 845extern int case_compare PARAMS ((splay_tree_key, 846 splay_tree_key)); 847 848extern tree c_add_case_label PARAMS ((splay_tree, 849 tree, tree, 850 tree)); 851 852extern tree build_function_call PARAMS ((tree, tree)); 853 854extern tree finish_label_address_expr PARAMS ((tree)); 855 856/* Same function prototype, but the C and C++ front ends have 857 different implementations. Used in c-common.c. */ 858extern tree lookup_label PARAMS ((tree)); 859 860/* enum expand_modified is in expr.h, as is the macro below. */ 861 862#ifdef QUEUED_VAR 863extern rtx c_expand_expr PARAMS ((tree, rtx, enum machine_mode, 864 enum expand_modifier)); 865#endif 866 867extern int c_safe_from_p PARAMS ((rtx, tree)); 868 869extern int c_staticp PARAMS ((tree)); 870 871extern int c_unsafe_for_reeval PARAMS ((tree)); 872 873/* Information recorded about each file examined during compilation. */ 874 875struct c_fileinfo 876{ 877 int time; /* Time spent in the file. */ 878 short interface_only; /* Flags - used only by C++ */ 879 short interface_unknown; 880}; 881 882struct c_fileinfo *get_fileinfo PARAMS ((const char *)); 883extern void dump_time_statistics PARAMS ((void)); 884 885#endif /* ! GCC_C_COMMON_H */
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