1/* Front-end tree definitions for GNU compiler.
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2 Copyright (C) 1989, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
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2 Copyright (C) 1989, 93-98, 1999 Free Software Foundation, Inc. |
3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU CC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 59 Temple Place - Suite 330, 19Boston, MA 02111-1307, USA. */ 20 21#include "machmode.h" 22 23#ifndef RTX_CODE 24struct rtx_def; 25#endif 26 27/* Codes of tree nodes */ 28 29#define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM, 30 31enum tree_code { 32#include "tree.def" 33 34 LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for 35 NUM_TREE_CODE. */ 36}; 37 38#undef DEFTREECODE 39 40/* Number of tree codes. */ 41#define NUM_TREE_CODES ((int)LAST_AND_UNUSED_TREE_CODE) 42 43/* Indexed by enum tree_code, contains a character which is 44 `<' for a comparison expression, `1', for a unary arithmetic 45 expression, `2' for a binary arithmetic expression, `e' for 46 other types of expressions, `r' for a reference, `c' for a 47 constant, `d' for a decl, `t' for a type, `s' for a statement, 48 and `x' for anything else (TREE_LIST, IDENTIFIER, etc). */ 49 50#define MAX_TREE_CODES 256 51extern char tree_code_type[MAX_TREE_CODES]; 52#define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)] 53 54/* Returns non-zero iff CLASS is the tree-code class of an 55 expression. */ 56 57#define IS_EXPR_CODE_CLASS(CLASS) \ 58 (CLASS == '<' || CLASS == '1' || CLASS == '2' || CLASS == 'e') 59 60/* Number of argument-words in each kind of tree-node. */ 61 62extern int tree_code_length[MAX_TREE_CODES]; 63 64/* Names of tree components. */ 65 66extern char *tree_code_name[MAX_TREE_CODES]; 67 68/* Codes that identify the various built in functions 69 so that expand_call can identify them quickly. */ 70 71enum built_in_function 72{ 73 NOT_BUILT_IN, 74 BUILT_IN_ALLOCA, 75 BUILT_IN_ABS, 76 BUILT_IN_FABS, 77 BUILT_IN_LABS, 78 BUILT_IN_FFS, 79 BUILT_IN_DIV, 80 BUILT_IN_LDIV, 81 BUILT_IN_FFLOOR, 82 BUILT_IN_FCEIL, 83 BUILT_IN_FMOD, 84 BUILT_IN_FREM, 85 BUILT_IN_MEMCPY, 86 BUILT_IN_MEMCMP, 87 BUILT_IN_MEMSET, 88 BUILT_IN_STRCPY, 89 BUILT_IN_STRCMP, 90 BUILT_IN_STRLEN, 91 BUILT_IN_FSQRT, 92 BUILT_IN_SIN, 93 BUILT_IN_COS, 94 BUILT_IN_GETEXP, 95 BUILT_IN_GETMAN, 96 BUILT_IN_SAVEREGS, 97 BUILT_IN_CLASSIFY_TYPE, 98 BUILT_IN_NEXT_ARG, 99 BUILT_IN_ARGS_INFO, 100 BUILT_IN_CONSTANT_P, 101 BUILT_IN_FRAME_ADDRESS, 102 BUILT_IN_RETURN_ADDRESS, 103 BUILT_IN_AGGREGATE_INCOMING_ADDRESS,
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104 BUILT_IN_CALLER_RETURN_ADDRESS,
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104 BUILT_IN_APPLY_ARGS, 105 BUILT_IN_APPLY, 106 BUILT_IN_RETURN, 107 BUILT_IN_SETJMP, 108 BUILT_IN_LONGJMP, 109 BUILT_IN_TRAP, 110 111 /* Various hooks for the DWARF 2 __throw routine. */
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113 BUILT_IN_FP, BUILT_IN_SP,
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112 BUILT_IN_UNWIND_INIT,
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113 BUILT_IN_DWARF_CFA, |
114 BUILT_IN_DWARF_FP_REGNUM, 115 BUILT_IN_DWARF_REG_SIZE, 116 BUILT_IN_FROB_RETURN_ADDR, 117 BUILT_IN_EXTRACT_RETURN_ADDR,
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119 BUILT_IN_SET_RETURN_ADDR_REG,
120 BUILT_IN_EH_STUB_OLD,
121 BUILT_IN_EH_STUB,
122 BUILT_IN_SET_EH_REGS,
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118 BUILT_IN_EH_RETURN, |
119 120 /* C++ extensions */ 121 BUILT_IN_NEW, 122 BUILT_IN_VEC_NEW, 123 BUILT_IN_DELETE, 124 BUILT_IN_VEC_DELETE, 125 126 /* Upper bound on non-language-specific builtins. */ 127 END_BUILTINS 128}; 129 130/* The definition of tree nodes fills the next several pages. */ 131 132/* A tree node can represent a data type, a variable, an expression 133 or a statement. Each node has a TREE_CODE which says what kind of 134 thing it represents. Some common codes are: 135 INTEGER_TYPE -- represents a type of integers. 136 ARRAY_TYPE -- represents a type of pointer. 137 VAR_DECL -- represents a declared variable. 138 INTEGER_CST -- represents a constant integer value. 139 PLUS_EXPR -- represents a sum (an expression). 140 141 As for the contents of a tree node: there are some fields 142 that all nodes share. Each TREE_CODE has various special-purpose 143 fields as well. The fields of a node are never accessed directly, 144 always through accessor macros. */ 145 146/* This type is used everywhere to refer to a tree node. */ 147 148typedef union tree_node *tree; 149 150/* Every kind of tree node starts with this structure, 151 so all nodes have these fields. 152 153 See the accessor macros, defined below, for documentation of the fields. 154 155 DO NOT change the layout of tree_common unless absolutely necessary. Some 156 front-ends (namely g++) depend on the internal layout of this tructure. 157 See my_tree_cons in the cp subdir for such uglyness. Ugh. */ 158 159struct tree_common 160{ 161 union tree_node *chain; 162 union tree_node *type; 163#ifdef ONLY_INT_FIELDS 164 unsigned int code : 8; 165#else 166 enum tree_code code : 8; 167#endif 168 169 unsigned side_effects_flag : 1; 170 unsigned constant_flag : 1; 171 unsigned permanent_flag : 1; 172 unsigned addressable_flag : 1; 173 unsigned volatile_flag : 1; 174 unsigned readonly_flag : 1; 175 unsigned unsigned_flag : 1; 176 unsigned asm_written_flag: 1; 177 178 unsigned used_flag : 1; 179 unsigned raises_flag : 1; 180 unsigned static_flag : 1; 181 unsigned public_flag : 1; 182 unsigned private_flag : 1; 183 unsigned protected_flag : 1; 184 185 unsigned lang_flag_0 : 1; 186 unsigned lang_flag_1 : 1; 187 unsigned lang_flag_2 : 1; 188 unsigned lang_flag_3 : 1; 189 unsigned lang_flag_4 : 1; 190 unsigned lang_flag_5 : 1; 191 unsigned lang_flag_6 : 1; 192 /* There is room for three more flags. */ 193}; 194 195/* The following table lists the uses of each of the above flags and 196 for which types of nodes they are defined. Note that expressions 197 include decls. 198 199 addressable_flag: 200 201 TREE_ADDRESSABLE in 202 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, LABEL_DECL, ..._TYPE 203 IDENTIFIER_NODE 204 205 static_flag: 206 207 TREE_STATIC in 208 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR 209 TREE_NO_UNUSED_WARNING in 210 CONVERT_EXPR, NOP_EXPR, COMPOUND_EXPR 211 TREE_VIA_VIRTUAL in 212 TREE_LIST or TREE_VEC 213 TREE_CONSTANT_OVERFLOW in 214 INTEGER_CST, REAL_CST, COMPLEX_CST 215 TREE_SYMBOL_REFERENCED in 216 IDENTIFIER_NODE 217 218 public_flag: 219 220 TREE_OVERFLOW in 221 INTEGER_CST, REAL_CST, COMPLEX_CST 222 TREE_PUBLIC in 223 VAR_DECL or FUNCTION_DECL 224 TREE_VIA_PUBLIC in 225 TREE_LIST or TREE_VEC
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226 EXPR_WFL_EMIT_LINE_NOTE in 227 EXPR_WITH_FILE_LOCATION |
228 229 private_flag: 230 231 TREE_VIA_PRIVATE in 232 TREE_LIST or TREE_VEC 233 TREE_PRIVATE in 234 ??? unspecified nodes 235 236 protected_flag: 237 238 TREE_VIA_PROTECTED in 239 TREE_LIST 240 TREE_PROTECTED in 241 BLOCK 242 ??? unspecified nodes 243 244 side_effects_flag: 245 246 TREE_SIDE_EFFECTS in 247 all expressions 248 249 volatile_flag: 250 251 TREE_THIS_VOLATILE in 252 all expressions 253 TYPE_VOLATILE in 254 ..._TYPE 255 256 readonly_flag: 257 258 TREE_READONLY in 259 all expressions 260 ITERATOR_BOUND_P in 261 VAR_DECL if iterator (C) 262 TYPE_READONLY in 263 ..._TYPE 264 265 constant_flag: 266 267 TREE_CONSTANT in 268 all expressions 269 270 permanent_flag: TREE_PERMANENT in all nodes 271 272 unsigned_flag: 273 274 TREE_UNSIGNED in 275 INTEGER_TYPE, ENUMERAL_TYPE, FIELD_DECL 276 DECL_BUILT_IN_NONANSI in 277 FUNCTION_DECL 278 TREE_PARMLIST in 279 TREE_PARMLIST (C++) 280 SAVE_EXPR_NOPLACEHOLDER in 281 SAVE_EXPR 282 283 asm_written_flag: 284 285 TREE_ASM_WRITTEN in 286 VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE 287 BLOCK 288 289 used_flag: 290 291 TREE_USED in 292 expressions, IDENTIFIER_NODE 293 294 raises_flag: 295 296 TREE_RAISES in 297 expressions 298 299 */ 300/* Define accessors for the fields that all tree nodes have 301 (though some fields are not used for all kinds of nodes). */ 302 303/* The tree-code says what kind of node it is. 304 Codes are defined in tree.def. */ 305#define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code) 306#define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (int) (VALUE)) 307 308/* When checking is enabled, errors will be generated if a tree node 309 is accessed incorrectly. The macros abort with a fatal error, 310 except for the *1 variants, which just return 0 on failure. The 311 latter variants should only be used for combination checks, which 312 succeed when one of the checks succeed. The CHAIN_CHECK macro helps 313 defining such checks. */ 314 315#ifdef ENABLE_CHECKING 316#define DO_CHECK(FUNC, t, param) FUNC (t, param, __FILE__, __LINE__, 0) 317#define DO_CHECK1(FUNC, t, param) FUNC (t, param, __FILE__, __LINE__, 1) 318#define CHAIN_CHECK(t, c1, c2) (c1 (t) ? t : c2 (t)) 319#else 320#define DO_CHECK(FUNC, t, param) (t) 321#define DO_CHECK1(FUNC, t, param) (t) 322#define CHAIN_CHECK(t, c1, c2) (t) 323#endif 324 325#define TREE_CHECK(t, code) DO_CHECK (tree_check, t, code) 326#define TREE_CHECK1(t, code) DO_CHECK1 (tree_check, t, code) 327 328#include "tree-check.h" 329
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332#define TYPE_CHECK(t) DO_CHECK (tree_class_check, t, 't')
333#define TYPE_CHECK1(t) DO_CHECK1 (tree_class_check, t, 't')
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330#define TYPE_CHECK(tree) DO_CHECK (tree_class_check, tree, 't') 331#define TYPE_CHECK1(tree) DO_CHECK1 (tree_class_check, tree, 't') |
332#define DECL_CHECK(t) DO_CHECK (tree_class_check, t, 'd') 333#define DECL_CHECK1(t) DO_CHECK1 (tree_class_check, t, 'd') 334#define CST_CHECK(t) DO_CHECK (tree_class_check, t, 'c') 335#define CST_CHECK1(t) DO_CHECK1 (tree_class_check, t, 'c') 336#define EXPR_CHECK(t) DO_CHECK (expr_check, t, 0) 337 338/* Chained checks. The last check has to succeed, the others may fail. */ 339#define CST_OR_CONSTRUCTOR_CHECK(t) \ 340 CHAIN_CHECK (t, CST_CHECK1, CONSTRUCTOR_CHECK) 341 342/* In all nodes that are expressions, this is the data type of the expression. 343 In POINTER_TYPE nodes, this is the type that the pointer points to. 344 In ARRAY_TYPE nodes, this is the type of the elements. */ 345#define TREE_TYPE(NODE) ((NODE)->common.type) 346 347/* Nodes are chained together for many purposes. 348 Types are chained together to record them for being output to the debugger 349 (see the function `chain_type'). 350 Decls in the same scope are chained together to record the contents 351 of the scope. 352 Statement nodes for successive statements used to be chained together. 353 Often lists of things are represented by TREE_LIST nodes that 354 are chained together. */ 355 356#define TREE_CHAIN(NODE) ((NODE)->common.chain) 357 358/* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs 359 that don't change the machine mode. */ 360 361#define STRIP_NOPS(EXP) \ 362 while ((TREE_CODE (EXP) == NOP_EXPR \ 363 || TREE_CODE (EXP) == CONVERT_EXPR \ 364 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ 365 && (TYPE_MODE (TREE_TYPE (EXP)) \ 366 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \ 367 (EXP) = TREE_OPERAND (EXP, 0); 368 369/* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */ 370 371#define STRIP_TYPE_NOPS(EXP) \ 372 while ((TREE_CODE (EXP) == NOP_EXPR \ 373 || TREE_CODE (EXP) == CONVERT_EXPR \ 374 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ 375 && (TREE_TYPE (EXP) \ 376 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \ 377 (EXP) = TREE_OPERAND (EXP, 0); 378 379/* Nonzero if TYPE represents an integral type. Note that we do not 380 include COMPLEX types here. */ 381 382#define INTEGRAL_TYPE_P(TYPE) \ 383 (TREE_CODE (TYPE) == INTEGER_TYPE || TREE_CODE (TYPE) == ENUMERAL_TYPE \ 384 || TREE_CODE (TYPE) == BOOLEAN_TYPE || TREE_CODE (TYPE) == CHAR_TYPE) 385 386/* Nonzero if TYPE represents a floating-point type, including complex 387 floating-point types. */ 388 389#define FLOAT_TYPE_P(TYPE) \ 390 (TREE_CODE (TYPE) == REAL_TYPE \ 391 || (TREE_CODE (TYPE) == COMPLEX_TYPE \ 392 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)) 393 394/* Nonzero if TYPE represents an aggregate (multi-component) type. */ 395 396#define AGGREGATE_TYPE_P(TYPE) \ 397 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \ 398 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE \ 399 || TREE_CODE (TYPE) == SET_TYPE) 400 401/* Nonzero if TYPE represents a pointer type. */ 402 403#define POINTER_TYPE_P(TYPE) \ 404 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE) 405 406/* Nonzero if TYPE represents a type. */ 407 408#define TYPE_P(TYPE) (TREE_CODE_CLASS (TREE_CODE (TYPE)) == 't') 409 410/* Define many boolean fields that all tree nodes have. */ 411 412/* In VAR_DECL nodes, nonzero means address of this is needed. 413 So it cannot be in a register. 414 In a FUNCTION_DECL, nonzero means its address is needed. 415 So it must be compiled even if it is an inline function. 416 In CONSTRUCTOR nodes, it means object constructed must be in memory. 417 In LABEL_DECL nodes, it means a goto for this label has been seen 418 from a place outside all binding contours that restore stack levels. 419 In ..._TYPE nodes, it means that objects of this type must 420 be fully addressable. This means that pieces of this 421 object cannot go into register parameters, for example. 422 In IDENTIFIER_NODEs, this means that some extern decl for this name 423 had its address taken. That matters for inline functions. */ 424#define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag) 425 426/* In a VAR_DECL, nonzero means allocate static storage. 427 In a FUNCTION_DECL, nonzero if function has been defined. 428 In a CONSTRUCTOR, nonzero means allocate static storage. */ 429#define TREE_STATIC(NODE) ((NODE)->common.static_flag) 430 431/* In a CONVERT_EXPR, NOP_EXPR or COMPOUND_EXPR, this means the node was 432 made implicitly and should not lead to an "unused value" warning. */ 433#define TREE_NO_UNUSED_WARNING(NODE) ((NODE)->common.static_flag) 434 435/* Nonzero for a TREE_LIST or TREE_VEC node means that the derivation 436 chain is via a `virtual' declaration. */ 437#define TREE_VIA_VIRTUAL(NODE) ((NODE)->common.static_flag) 438 439/* In an INTEGER_CST, REAL_CST, or COMPLEX_CST, this means there was an 440 overflow in folding. This is distinct from TREE_OVERFLOW because ANSI C 441 requires a diagnostic when overflows occur in constant expressions. */ 442#define TREE_CONSTANT_OVERFLOW(NODE) ((NODE)->common.static_flag) 443 444/* In an IDENTIFIER_NODE, this means that assemble_name was called with 445 this string as an argument. */ 446#define TREE_SYMBOL_REFERENCED(NODE) ((NODE)->common.static_flag) 447 448/* In an INTEGER_CST, REAL_CST, of COMPLEX_CST, this means there was an 449 overflow in folding, and no warning has been issued for this subexpression. 450 TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW, but not vice versa. */ 451#define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag) 452 453/* In a VAR_DECL or FUNCTION_DECL, 454 nonzero means name is to be accessible from outside this module. 455 In an identifier node, nonzero means an external declaration 456 accessible from outside this module was previously seen 457 for this name in an inner scope. */ 458#define TREE_PUBLIC(NODE) ((NODE)->common.public_flag) 459 460/* Nonzero for TREE_LIST or TREE_VEC node means that the path to the 461 base class is via a `public' declaration, which preserves public 462 fields from the base class as public. */ 463#define TREE_VIA_PUBLIC(NODE) ((NODE)->common.public_flag) 464 465/* Ditto, for `private' declarations. */ 466#define TREE_VIA_PRIVATE(NODE) ((NODE)->common.private_flag) 467 468/* Nonzero for TREE_LIST node means that the path to the 469 base class is via a `protected' declaration, which preserves 470 protected fields from the base class as protected. 471 OVERLOADED. */ 472#define TREE_VIA_PROTECTED(NODE) ((NODE)->common.protected_flag) 473 474/* In any expression, nonzero means it has side effects or reevaluation 475 of the whole expression could produce a different value. 476 This is set if any subexpression is a function call, a side effect 477 or a reference to a volatile variable. 478 In a ..._DECL, this is set only if the declaration said `volatile'. */ 479#define TREE_SIDE_EFFECTS(NODE) ((NODE)->common.side_effects_flag) 480 481/* Nonzero means this expression is volatile in the C sense: 482 its address should be of type `volatile WHATEVER *'. 483 In other words, the declared item is volatile qualified. 484 This is used in _DECL nodes and _REF nodes. 485 486 In a ..._TYPE node, means this type is volatile-qualified. 487 But use TYPE_VOLATILE instead of this macro when the node is a type, 488 because eventually we may make that a different bit. 489 490 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */ 491#define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag) 492 493/* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node, 494 nonzero means it may not be the lhs of an assignment. 495 In a ..._TYPE node, means this type is const-qualified 496 (but the macro TYPE_READONLY should be used instead of this macro 497 when the node is a type). */ 498#define TREE_READONLY(NODE) ((NODE)->common.readonly_flag) 499 500/* Value of expression is constant. 501 Always appears in all ..._CST nodes. 502 May also appear in an arithmetic expression, an ADDR_EXPR or a CONSTRUCTOR 503 if the value is constant. */ 504#define TREE_CONSTANT(NODE) ((NODE)->common.constant_flag) 505 506/* Nonzero means permanent node; 507 node will continue to exist for the entire compiler run. 508 Otherwise it will be recycled at the end of the function. */ 509#define TREE_PERMANENT(NODE) ((NODE)->common.permanent_flag) 510 511/* In INTEGER_TYPE or ENUMERAL_TYPE nodes, means an unsigned type. 512 In FIELD_DECL nodes, means an unsigned bit field. 513 The same bit is used in functions as DECL_BUILT_IN_NONANSI. */ 514#define TREE_UNSIGNED(NODE) ((NODE)->common.unsigned_flag) 515 516/* Nonzero in a VAR_DECL means assembler code has been written. 517 Nonzero in a FUNCTION_DECL means that the function has been compiled. 518 This is interesting in an inline function, since it might not need 519 to be compiled separately. 520 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE 521 if the sdb debugging info for the type has been written. 522 In a BLOCK node, nonzero if reorder_blocks has already seen this block. */ 523#define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag) 524 525/* Nonzero in a _DECL if the name is used in its scope. 526 Nonzero in an expr node means inhibit warning if value is unused. 527 In IDENTIFIER_NODEs, this means that some extern decl for this name 528 was used. */ 529#define TREE_USED(NODE) ((NODE)->common.used_flag) 530 531/* Nonzero for a tree node whose evaluation could result 532 in the raising of an exception. Not implemented yet. */ 533#define TREE_RAISES(NODE) ((NODE)->common.raises_flag) 534 535/* Used in classes in C++. */ 536#define TREE_PRIVATE(NODE) ((NODE)->common.private_flag) 537/* Used in classes in C++. 538 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */ 539#define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag) 540 541/* These flags are available for each language front end to use internally. */ 542#define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0) 543#define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1) 544#define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2) 545#define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3) 546#define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4) 547#define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5) 548#define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6) 549 550/* Define additional fields and accessors for nodes representing constants. */ 551 552/* In an INTEGER_CST node. These two together make a 2-word integer. 553 If the data type is signed, the value is sign-extended to 2 words 554 even though not all of them may really be in use. 555 In an unsigned constant shorter than 2 words, the extra bits are 0. */ 556#define TREE_INT_CST_LOW(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst_low) 557#define TREE_INT_CST_HIGH(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst_high) 558 559#define INT_CST_LT(A, B) \ 560(TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \ 561 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \ 562 && ((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (A) \ 563 < (unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (B)))) 564 565#define INT_CST_LT_UNSIGNED(A, B) \ 566(((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ 567 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \ 568 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ 569 == (unsigned HOST_WIDE_INT ) TREE_INT_CST_HIGH (B)) \ 570 && (((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (A) \ 571 < (unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (B))))) 572 573struct tree_int_cst 574{ 575 char common[sizeof (struct tree_common)]; 576 struct rtx_def *rtl; /* acts as link to register transfer language 577 (rtl) info */ 578 HOST_WIDE_INT int_cst_low; 579 HOST_WIDE_INT int_cst_high; 580}; 581 582/* In REAL_CST, STRING_CST, COMPLEX_CST nodes, and CONSTRUCTOR nodes, 583 and generally in all kinds of constants that could 584 be given labels (rather than being immediate). */ 585 586#define TREE_CST_RTL(NODE) (CST_OR_CONSTRUCTOR_CHECK (NODE)->real_cst.rtl) 587 588/* In a REAL_CST node. */ 589/* We can represent a real value as either a `double' or a string. 590 Strings don't allow for any optimization, but they do allow 591 for cross-compilation. */ 592 593#define TREE_REAL_CST(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst) 594 595#include "real.h" 596 597struct tree_real_cst 598{ 599 char common[sizeof (struct tree_common)]; 600 struct rtx_def *rtl; /* acts as link to register transfer language 601 (rtl) info */ 602 REAL_VALUE_TYPE real_cst; 603}; 604 605/* In a STRING_CST */ 606#define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length) 607#define TREE_STRING_POINTER(NODE) (STRING_CST_CHECK (NODE)->string.pointer) 608 609struct tree_string 610{ 611 char common[sizeof (struct tree_common)]; 612 struct rtx_def *rtl; /* acts as link to register transfer language 613 (rtl) info */ 614 int length; 615 char *pointer; 616}; 617 618/* In a COMPLEX_CST node. */ 619#define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real) 620#define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag) 621 622struct tree_complex 623{ 624 char common[sizeof (struct tree_common)]; 625 struct rtx_def *rtl; /* acts as link to register transfer language 626 (rtl) info */ 627 union tree_node *real; 628 union tree_node *imag; 629}; 630 631/* Define fields and accessors for some special-purpose tree nodes. */ 632 633#define IDENTIFIER_LENGTH(NODE) (IDENTIFIER_NODE_CHECK (NODE)->identifier.length) 634#define IDENTIFIER_POINTER(NODE) (IDENTIFIER_NODE_CHECK (NODE)->identifier.pointer) 635 636struct tree_identifier 637{ 638 char common[sizeof (struct tree_common)]; 639 int length; 640 char *pointer; 641}; 642 643/* In a TREE_LIST node. */ 644#define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose) 645#define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value) 646 647struct tree_list 648{ 649 char common[sizeof (struct tree_common)]; 650 union tree_node *purpose; 651 union tree_node *value; 652}; 653 654/* In a TREE_VEC node. */ 655#define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length) 656#define TREE_VEC_ELT(NODE,I) (TREE_VEC_CHECK (NODE)->vec.a[I]) 657#define TREE_VEC_END(NODE) ((void) TREE_VEC_CHECK (NODE),&((NODE)->vec.a[(NODE)->vec.length])) 658 659struct tree_vec 660{ 661 char common[sizeof (struct tree_common)]; 662 int length; 663 union tree_node *a[1]; 664}; 665 666/* Define fields and accessors for some nodes that represent expressions. */ 667 668/* In a SAVE_EXPR node. */ 669#define SAVE_EXPR_CONTEXT(NODE) TREE_OPERAND(NODE, 1) 670#define SAVE_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[2]) 671#define SAVE_EXPR_NOPLACEHOLDER(NODE) TREE_UNSIGNED (NODE) 672 673/* In a RTL_EXPR node. */ 674#define RTL_EXPR_SEQUENCE(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[0]) 675#define RTL_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[1]) 676 677/* In a CALL_EXPR node. */ 678#define CALL_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[2]) 679 680/* In a CONSTRUCTOR node. */ 681#define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND (NODE, 1) 682 683/* In ordinary expression nodes. */ 684#define TREE_OPERAND(NODE, I) (EXPR_CHECK (NODE)->exp.operands[I]) 685#define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity) 686
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689/* In expression with file location information. */
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687/* In a LABELED_BLOCK_EXPR node. */ 688#define LABELED_BLOCK_LABEL(NODE) TREE_OPERAND (NODE, 0) 689#define LABELED_BLOCK_BODY(NODE) TREE_OPERAND (NODE, 1) 690 691/* In a EXIT_BLOCK_EXPR node. */ 692#define EXIT_BLOCK_LABELED_BLOCK(NODE) TREE_OPERAND (NODE, 0) 693#define EXIT_BLOCK_RETURN(NODE) TREE_OPERAND (NODE, 1) 694 695/* In a LOOP_EXPR node. */ 696#define LOOP_EXPR_BODY(NODE) TREE_OPERAND (NODE, 0) 697 698/* In a EXPR_WITH_FILE_LOCATION node. */ |
699#define EXPR_WFL_NODE(NODE) TREE_OPERAND((NODE), 0) 700#define EXPR_WFL_FILENAME(NODE) (IDENTIFIER_POINTER ((NODE)->common.chain)) 701#define EXPR_WFL_FILENAME_NODE(NODE) ((NODE)->common.chain) 702#define EXPR_WFL_LINENO(NODE) (EXPR_CHECK (NODE)->exp.complexity >> 12) 703#define EXPR_WFL_COLNO(NODE) (EXPR_CHECK (NODE)->exp.complexity & 0xfff) 704#define EXPR_WFL_LINECOL(NODE) (EXPR_CHECK (NODE)->exp.complexity) 705#define EXPR_WFL_SET_LINECOL(NODE, LINE, COL) \ 706 (EXPR_WFL_LINECOL(NODE) = ((LINE) << 12) | ((COL) & 0xfff))
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698#define EXPR_WFL_EMIT_LINE_NOTE(NODE) ((NODE)->common.lang_flag_0)
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707#define EXPR_WFL_EMIT_LINE_NOTE(NODE) ((NODE)->common.public_flag) |
708 709struct tree_exp 710{ 711 char common[sizeof (struct tree_common)]; 712 int complexity; 713 union tree_node *operands[1]; 714}; 715 716/* In a BLOCK node. */ 717#define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars) 718#define BLOCK_TYPE_TAGS(NODE) (BLOCK_CHECK (NODE)->block.type_tags) 719#define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks) 720#define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext) 721/* Note: when changing this, make sure to find the places 722 that use chainon or nreverse. */ 723#define BLOCK_CHAIN(NODE) TREE_CHAIN (NODE) 724#define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin) 725#define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag) 726#define BLOCK_END_NOTE(NODE) (BLOCK_CHECK (NODE)->block.end_note) 727/* Nonzero means that this block has separate live range regions */ 728#define BLOCK_LIVE_RANGE_FLAG(NOTE) (BLOCK_CHECK (NOTE)->block.live_range_flag) 729 730/* Nonzero means that this block has a variable declared in it 731 that is split into separate live ranges. */ 732#define BLOCK_LIVE_RANGE_VAR_FLAG(NOTE) (BLOCK_CHECK (NOTE)->block.live_range_var_flag) 733 734/* Index for marking the start of the block for live ranges. */ 735#define BLOCK_LIVE_RANGE_START(NOTE) (BLOCK_CHECK (NOTE)->block.live_range_start) 736 737/* Index for marking the end of the block for live ranges. */ 738#define BLOCK_LIVE_RANGE_END(NOTE) (BLOCK_CHECK (NOTE)->block.live_range_end) 739 740/* Nonzero means that this block is prepared to handle exceptions 741 listed in the BLOCK_VARS slot. */ 742#define BLOCK_HANDLER_BLOCK(NODE) (BLOCK_CHECK (NODE)->block.handler_block_flag) 743 744struct tree_block 745{ 746 char common[sizeof (struct tree_common)]; 747 748 unsigned handler_block_flag : 1; 749 unsigned abstract_flag : 1; 750 unsigned live_range_flag : 1; 751 unsigned live_range_var_flag : 1; 752 753 union tree_node *vars; 754 union tree_node *type_tags; 755 union tree_node *subblocks; 756 union tree_node *supercontext; 757 union tree_node *abstract_origin; 758 struct rtx_def *end_note; 759 int live_range_start; 760 int live_range_end; 761}; 762 763/* Define fields and accessors for nodes representing data types. */ 764 765/* See tree.def for documentation of the use of these fields. 766 Look at the documentation of the various ..._TYPE tree codes. */ 767 768#define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid) 769#define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size) 770#define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit) 771#define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode) 772#define TYPE_VALUES(NODE) (TYPE_CHECK (NODE)->type.values) 773#define TYPE_DOMAIN(NODE) (TYPE_CHECK (NODE)->type.values) 774#define TYPE_FIELDS(NODE) (TYPE_CHECK (NODE)->type.values) 775#define TYPE_METHODS(NODE) (TYPE_CHECK (NODE)->type.maxval) 776#define TYPE_VFIELD(NODE) (TYPE_CHECK (NODE)->type.minval) 777#define TYPE_ARG_TYPES(NODE) (TYPE_CHECK (NODE)->type.values) 778#define TYPE_METHOD_BASETYPE(NODE) (TYPE_CHECK (NODE)->type.maxval) 779#define TYPE_OFFSET_BASETYPE(NODE) (TYPE_CHECK (NODE)->type.maxval) 780#define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to) 781#define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to) 782#define TYPE_MIN_VALUE(NODE) (TYPE_CHECK (NODE)->type.minval) 783#define TYPE_MAX_VALUE(NODE) (TYPE_CHECK (NODE)->type.maxval) 784#define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision) 785#define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address) 786#define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer) 787#define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name) 788#define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant) 789#define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
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781#define TYPE_BINFO(NODE) (TYPE_CHECK (NODE)->type.binfo)
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790#define TYPE_NONCOPIED_PARTS(NODE) (TYPE_CHECK (NODE)->type.noncopied_parts) 791#define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context) 792#define TYPE_OBSTACK(NODE) (TYPE_CHECK (NODE)->type.obstack) 793#define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific) 794
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795/* For aggregate types, information about this type, as a base type 796 for itself. Used in a language-dependent way for types that are 797 neither a RECORD_TYPE, QUAL_UNION_TYPE, nor a UNION_TYPE. */ 798#define TYPE_BINFO(NODE) (TYPE_CHECK (NODE)->type.binfo) 799 |
800/* The (language-specific) typed-based alias set for this type. 801 Objects whose TYPE_ALIAS_SETs are different cannot alias each 802 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been 803 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this 804 type can alias objects of any type. */ 805#define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set) 806 807/* Nonzero iff the typed-based alias set for this type has been 808 calculated. */ 809#define TYPE_ALIAS_SET_KNOWN_P(NODE) \ 810 (TYPE_CHECK (NODE)->type.alias_set != -1) 811 812/* A TREE_LIST of IDENTIFIER nodes of the attributes that apply 813 to this type. */ 814#define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes) 815 816/* The alignment necessary for objects of this type. 817 The value is an int, measured in bits. */ 818#define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align) 819 820#define TYPE_STUB_DECL(NODE) (TREE_CHAIN (NODE)) 821 822/* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type 823 has BLKmode only because it lacks the alignment requirement for 824 its size. */ 825#define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag) 826 827/* Nonzero in a type considered volatile as a whole. */ 828#define TYPE_VOLATILE(NODE) ((NODE)->common.volatile_flag) 829 830/* Means this type is const-qualified. */ 831#define TYPE_READONLY(NODE) ((NODE)->common.readonly_flag) 832
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833/* If nonzero, this type is `restrict'-qualified, in the C sense of 834 the term. */ 835#define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag) 836 837/* There is a TYPE_QUAL value for each type qualifier. They can be 838 combined by bitwise-or to form the complete set of qualifiers for a 839 type. */ 840 841#define TYPE_UNQUALIFIED 0x0 842#define TYPE_QUAL_CONST 0x1 843#define TYPE_QUAL_VOLATILE 0x2 844#define TYPE_QUAL_RESTRICT 0x4 845 846/* The set of type qualifiers for this type. */ 847#define TYPE_QUALS(NODE) \ 848 ((TYPE_READONLY(NODE) * TYPE_QUAL_CONST) | \ 849 (TYPE_VOLATILE(NODE) * TYPE_QUAL_VOLATILE) | \ 850 (TYPE_RESTRICT(NODE) * TYPE_QUAL_RESTRICT)) 851 |
852/* These flags are available for each language front end to use internally. */ 853#define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0) 854#define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1) 855#define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2) 856#define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3) 857#define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4) 858#define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5) 859#define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6) 860 861/* If set in an ARRAY_TYPE, indicates a string type (for languages 862 that distinguish string from array of char). 863 If set in a SET_TYPE, indicates a bitstring type. */ 864#define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag) 865 866/* If non-NULL, this is a upper bound of the size (in bytes) of an 867 object of the given ARRAY_TYPE. This allows temporaries to be allocated. */ 868#define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) TYPE_MAX_VALUE (ARRAY_TYPE) 869 870/* Indicates that objects of this type must be initialized by calling a 871 function when they are created. */ 872#define TYPE_NEEDS_CONSTRUCTING(NODE) (TYPE_CHECK (NODE)->type.needs_constructing_flag) 873 874/* Indicates that objects of this type (a UNION_TYPE), should be passed 875 the same way that the first union alternative would be passed. */ 876#define TYPE_TRANSPARENT_UNION(NODE) (TYPE_CHECK (NODE)->type.transparent_union_flag) 877 878/* Indicated that objects of this type should be laid out in as 879 compact a way as possible. */ 880#define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag) 881 882struct tree_type 883{ 884 char common[sizeof (struct tree_common)]; 885 union tree_node *values; 886 union tree_node *size; 887 union tree_node *size_unit; 888 union tree_node *attributes; 889 unsigned uid; 890 891 unsigned char precision; 892#ifdef ONLY_INT_FIELDS 893 int mode : 8; 894#else 895 enum machine_mode mode : 8; 896#endif 897 898 unsigned string_flag : 1; 899 unsigned no_force_blk_flag : 1; 900 unsigned needs_constructing_flag : 1; 901 unsigned transparent_union_flag : 1; 902 unsigned packed_flag : 1;
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903 unsigned restrict_flag : 1; 904 |
905 unsigned lang_flag_0 : 1; 906 unsigned lang_flag_1 : 1; 907 unsigned lang_flag_2 : 1; 908 unsigned lang_flag_3 : 1; 909 unsigned lang_flag_4 : 1; 910 unsigned lang_flag_5 : 1; 911 unsigned lang_flag_6 : 1;
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878 /* room for 4 more bits */
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912 /* room for 3 more bits */ |
913 914 unsigned int align; 915 union tree_node *pointer_to; 916 union tree_node *reference_to; 917 union {int address; char *pointer; } symtab; 918 union tree_node *name; 919 union tree_node *minval; 920 union tree_node *maxval; 921 union tree_node *next_variant; 922 union tree_node *main_variant; 923 union tree_node *binfo; 924 union tree_node *noncopied_parts; 925 union tree_node *context; 926 struct obstack *obstack; 927 int alias_set; 928 /* Points to a structure whose details depend on the language in use. */ 929 struct lang_type *lang_specific; 930}; 931 932/* Define accessor macros for information about type inheritance 933 and basetypes. 934 935 A "basetype" means a particular usage of a data type for inheritance 936 in another type. Each such basetype usage has its own "binfo" 937 object to describe it. The binfo object is a TREE_VEC node. 938 939 Inheritance is represented by the binfo nodes allocated for a 940 given type. For example, given types C and D, such that D is 941 inherited by C, 3 binfo nodes will be allocated: one for describing 942 the binfo properties of C, similarly one for D, and one for 943 describing the binfo properties of D as a base type for C. 944 Thus, given a pointer to class C, one can get a pointer to the binfo 945 of D acting as a basetype for C by looking at C's binfo's basetypes. */ 946 947/* The actual data type node being inherited in this basetype. */ 948#define BINFO_TYPE(NODE) TREE_TYPE (NODE) 949 950/* The offset where this basetype appears in its containing type. 951 BINFO_OFFSET slot holds the offset (in bytes) 952 from the base of the complete object to the base of the part of the 953 object that is allocated on behalf of this `type'. 954 This is always 0 except when there is multiple inheritance. */ 955 956#define BINFO_OFFSET(NODE) TREE_VEC_ELT ((NODE), 1) 957#define TYPE_BINFO_OFFSET(NODE) BINFO_OFFSET (TYPE_BINFO (NODE)) 958#define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE))) 959 960/* The virtual function table belonging to this basetype. Virtual 961 function tables provide a mechanism for run-time method dispatching. 962 The entries of a virtual function table are language-dependent. */ 963 964#define BINFO_VTABLE(NODE) TREE_VEC_ELT ((NODE), 2) 965#define TYPE_BINFO_VTABLE(NODE) BINFO_VTABLE (TYPE_BINFO (NODE)) 966 967/* The virtual functions in the virtual function table. This is 968 a TREE_LIST that is used as an initial approximation for building 969 a virtual function table for this basetype. */ 970#define BINFO_VIRTUALS(NODE) TREE_VEC_ELT ((NODE), 3) 971#define TYPE_BINFO_VIRTUALS(NODE) BINFO_VIRTUALS (TYPE_BINFO (NODE)) 972 973/* A vector of additional binfos for the types inherited by this basetype. 974 975 If this basetype describes type D as inherited in C, 976 and if the basetypes of D are E anf F, 977 then this vector contains binfos for inheritance of E and F by C. 978 979 ??? This could probably be done by just allocating the 980 base types at the end of this TREE_VEC (instead of using 981 another TREE_VEC). This would simplify the calculation 982 of how many basetypes a given type had. */ 983#define BINFO_BASETYPES(NODE) TREE_VEC_ELT ((NODE), 4) 984#define TYPE_BINFO_BASETYPES(NODE) TREE_VEC_ELT (TYPE_BINFO (NODE), 4) 985 986/* Accessor macro to get to the Nth basetype of this basetype. */ 987#define BINFO_BASETYPE(NODE,N) TREE_VEC_ELT (BINFO_BASETYPES (NODE), (N)) 988#define TYPE_BINFO_BASETYPE(NODE,N) BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (NODE)), (N))) 989 990/* For a BINFO record describing an inheritance, this yields a pointer 991 to the artificial FIELD_DECL node which contains the "virtual base 992 class pointer" for the given inheritance. */ 993#define BINFO_VPTR_FIELD(NODE) TREE_VEC_ELT ((NODE), 5) 994 995/* The size of a base class subobject of this type. Not all frontends 996 currently allocate the space for this field. */ 997#define BINFO_SIZE(NODE) TREE_VEC_ELT ((NODE), 6) 998#define TYPE_BINFO_SIZE(NODE) BINFO_SIZE (TYPE_BINFO (NODE)) 999 1000/* Slot used to build a chain that represents a use of inheritance. 1001 For example, if X is derived from Y, and Y is derived from Z, 1002 then this field can be used to link the binfo node for X to 1003 the binfo node for X's Y to represent the use of inheritance 1004 from X to Y. Similarly, this slot of the binfo node for X's Y 1005 can point to the Z from which Y is inherited (in X's inheritance 1006 hierarchy). In this fashion, one can represent and traverse specific 1007 uses of inheritance using the binfo nodes themselves (instead of 1008 consing new space pointing to binfo nodes). 1009 It is up to the language-dependent front-ends to maintain 1010 this information as necessary. */ 1011#define BINFO_INHERITANCE_CHAIN(NODE) TREE_VEC_ELT ((NODE), 0) 1012 1013/* Define fields and accessors for nodes representing declared names. */ 1014
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1015/* Nonzero if DECL represents a decl. */ 1016#define DECL_P(DECL) (TREE_CODE_CLASS (TREE_CODE (DECL)) == 'd') |
1017/* This is the name of the object as written by the user. 1018 It is an IDENTIFIER_NODE. */ 1019#define DECL_NAME(NODE) (DECL_CHECK (NODE)->decl.name) 1020/* This is the name of the object as the assembler will see it 1021 (but before any translations made by ASM_OUTPUT_LABELREF). 1022 Often this is the same as DECL_NAME. 1023 It is an IDENTIFIER_NODE. */ 1024#define DECL_ASSEMBLER_NAME(NODE) (DECL_CHECK (NODE)->decl.assembler_name) 1025/* Records the section name in a section attribute. Used to pass 1026 the name from decl_attributes to make_function_rtl and make_decl_rtl. */ 1027#define DECL_SECTION_NAME(NODE) (DECL_CHECK (NODE)->decl.section_name) 1028/* For FIELD_DECLs, this is the 1029 RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE node that the field is 1030 a member of. For VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL, 1031 and CONST_DECL nodes, this points to either the FUNCTION_DECL for the 1032 containing function, the RECORD_TYPE or UNION_TYPE for the containing 1033 type, or NULL_TREE if the given decl has "file scope". */ 1034#define DECL_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context) 1035#define DECL_FIELD_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context) 1036/* In a DECL this is the field where configuration dependent machine 1037 attributes are store */ 1038#define DECL_MACHINE_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.machine_attributes) 1039/* In a FIELD_DECL, this is the field position, counting in bits, 1040 of the bit closest to the beginning of the structure. */ 1041#define DECL_FIELD_BITPOS(NODE) (DECL_CHECK (NODE)->decl.arguments) 1042/* In a FIELD_DECL, this indicates whether the field was a bit-field and 1043 if so, the type that was originally specified for it. 1044 TREE_TYPE may have been modified (in finish_struct). */ 1045#define DECL_BIT_FIELD_TYPE(NODE) (DECL_CHECK (NODE)->decl.result) 1046/* In FUNCTION_DECL, a chain of ..._DECL nodes. */ 1047/* VAR_DECL and PARM_DECL reserve the arguments slot 1048 for language-specific uses. */ 1049#define DECL_ARGUMENTS(NODE) (DECL_CHECK (NODE)->decl.arguments) 1050/* In FUNCTION_DECL, holds the decl for the return value. */ 1051#define DECL_RESULT(NODE) (DECL_CHECK (NODE)->decl.result) 1052/* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */ 1053#define DECL_ORIGINAL_TYPE(NODE) (DECL_CHECK (NODE)->decl.result) 1054/* In PARM_DECL, holds the type as written (perhaps a function or array). */ 1055#define DECL_ARG_TYPE_AS_WRITTEN(NODE) (DECL_CHECK (NODE)->decl.result) 1056/* For a FUNCTION_DECL, holds the tree of BINDINGs. 1057 For a VAR_DECL, holds the initial value. 1058 For a PARM_DECL, not used--default 1059 values for parameters are encoded in the type of the function, 1060 not in the PARM_DECL slot. */ 1061#define DECL_INITIAL(NODE) (DECL_CHECK (NODE)->decl.initial) 1062/* For a PARM_DECL, records the data type used to pass the argument, 1063 which may be different from the type seen in the program. */ 1064#define DECL_ARG_TYPE(NODE) (DECL_CHECK (NODE)->decl.initial) /* In PARM_DECL. */ 1065/* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which 1066 if nonzero, indicates that the field occupies the type. */ 1067#define DECL_QUALIFIER(NODE) (DECL_CHECK (NODE)->decl.initial) 1068/* These two fields describe where in the source code the declaration was. */ 1069#define DECL_SOURCE_FILE(NODE) (DECL_CHECK (NODE)->decl.filename) 1070#define DECL_SOURCE_LINE(NODE) (DECL_CHECK (NODE)->decl.linenum) 1071/* Holds the size of the datum, as a tree expression. 1072 Need not be constant. */ 1073#define DECL_SIZE(NODE) (DECL_CHECK (NODE)->decl.size) 1074/* Holds the alignment required for the datum. */ 1075#define DECL_ALIGN(NODE) (DECL_CHECK (NODE)->decl.frame_size.u) 1076/* Holds the machine mode corresponding to the declaration of a variable or 1077 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a 1078 FIELD_DECL. */ 1079#define DECL_MODE(NODE) (DECL_CHECK (NODE)->decl.mode) 1080/* Holds the RTL expression for the value of a variable or function. If 1081 PROMOTED_MODE is defined, the mode of this expression may not be same 1082 as DECL_MODE. In that case, DECL_MODE contains the mode corresponding 1083 to the variable's data type, while the mode 1084 of DECL_RTL is the mode actually used to contain the data. */ 1085#define DECL_RTL(NODE) (DECL_CHECK (NODE)->decl.rtl) 1086/* Holds an INSN_LIST of all of the live ranges in which the variable 1087 has been moved to a possibly different register. */ 1088#define DECL_LIVE_RANGE_RTL(NODE) (DECL_CHECK (NODE)->decl.live_range_rtl) 1089/* For PARM_DECL, holds an RTL for the stack slot or register 1090 where the data was actually passed. */ 1091#define DECL_INCOMING_RTL(NODE) (DECL_CHECK (NODE)->decl.saved_insns.r) 1092/* For FUNCTION_DECL, if it is inline, holds the saved insn chain. */ 1093#define DECL_SAVED_INSNS(NODE) (DECL_CHECK (NODE)->decl.saved_insns.r) 1094/* For FUNCTION_DECL, if it is inline, 1095 holds the size of the stack frame, as an integer. */ 1096#define DECL_FRAME_SIZE(NODE) (DECL_CHECK (NODE)->decl.frame_size.i) 1097/* For FUNCTION_DECL, if it is built-in, 1098 this identifies which built-in operation it is. */ 1099#define DECL_FUNCTION_CODE(NODE) (DECL_CHECK (NODE)->decl.frame_size.f) 1100#define DECL_SET_FUNCTION_CODE(NODE,VAL) (DECL_CHECK (NODE)->decl.frame_size.f = (VAL)) 1101/* For a FIELD_DECL, holds the size of the member as an integer. */ 1102#define DECL_FIELD_SIZE(NODE) (DECL_CHECK (NODE)->decl.saved_insns.i) 1103 1104/* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways. 1105 Before the struct containing the FUNCTION_DECL is laid out, 1106 DECL_VINDEX may point to a FUNCTION_DECL in a base class which 1107 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual 1108 function. When the class is laid out, this pointer is changed 1109 to an INTEGER_CST node which is suitable for use as an index 1110 into the virtual function table. */ 1111#define DECL_VINDEX(NODE) (DECL_CHECK (NODE)->decl.vindex) 1112/* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in 1113 which this FIELD_DECL is defined. This information is needed when 1114 writing debugging information about vfield and vbase decls for C++. */ 1115#define DECL_FCONTEXT(NODE) (DECL_CHECK (NODE)->decl.vindex) 1116 1117/* Every ..._DECL node gets a unique number. */ 1118#define DECL_UID(NODE) (DECL_CHECK (NODE)->decl.uid) 1119 1120/* For any sort of a ..._DECL node, this points to the original (abstract) 1121 decl node which this decl is an instance of, or else it is NULL indicating 1122 that this decl is not an instance of some other decl. For example, 1123 in a nested declaration of an inline function, this points back to the 1124 definition. */ 1125#define DECL_ABSTRACT_ORIGIN(NODE) (DECL_CHECK (NODE)->decl.abstract_origin) 1126
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1127/* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract 1128 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */ 1129#define DECL_ORIGIN(NODE) \ 1130 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : NODE) 1131 |
1132/* Nonzero for any sort of ..._DECL node means this decl node represents 1133 an inline instance of some original (abstract) decl from an inline function; 1134 suppress any warnings about shadowing some other variable. */ 1135#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != (tree) 0) 1136 1137/* Nonzero if a _DECL means that the name of this decl should be ignored 1138 for symbolic debug purposes. */ 1139#define DECL_IGNORED_P(NODE) (DECL_CHECK (NODE)->decl.ignored_flag) 1140 1141/* Nonzero for a given ..._DECL node means that this node represents an 1142 "abstract instance" of the given declaration (e.g. in the original 1143 declaration of an inline function). When generating symbolic debugging 1144 information, we mustn't try to generate any address information for nodes 1145 marked as "abstract instances" because we don't actually generate 1146 any code or allocate any data space for such instances. */ 1147#define DECL_ABSTRACT(NODE) (DECL_CHECK (NODE)->decl.abstract_flag) 1148 1149/* Nonzero if a _DECL means that no warnings should be generated just 1150 because this decl is unused. */ 1151#define DECL_IN_SYSTEM_HEADER(NODE) (DECL_CHECK (NODE)->decl.in_system_header_flag) 1152 1153/* Nonzero for a given ..._DECL node means that this node should be 1154 put in .common, if possible. If a DECL_INITIAL is given, and it 1155 is not error_mark_node, then the decl cannot be put in .common. */ 1156#define DECL_COMMON(NODE) (DECL_CHECK (NODE)->decl.common_flag) 1157 1158/* Language-specific decl information. */ 1159#define DECL_LANG_SPECIFIC(NODE) (DECL_CHECK (NODE)->decl.lang_specific) 1160 1161/* In a VAR_DECL or FUNCTION_DECL, 1162 nonzero means external reference: 1163 do not allocate storage, and refer to a definition elsewhere. */ 1164#define DECL_EXTERNAL(NODE) (DECL_CHECK (NODE)->decl.external_flag) 1165
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1166/* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority 1167 initializatons. */ 1168#define DEFAULT_INIT_PRIORITY 65535 1169#define MAX_INIT_PRIORITY 65535 1170#define MAX_RESERVED_INIT_PRIORITY 100 1171 |
1172/* In a TYPE_DECL 1173 nonzero means the detail info about this type is not dumped into stabs. 1174 Instead it will generate cross reference ('x') of names. 1175 This uses the same flag as DECL_EXTERNAL. */ 1176#define TYPE_DECL_SUPPRESS_DEBUG(NODE) (DECL_CHECK (NODE)->decl.external_flag) 1177 1178 1179/* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */ 1180#define DECL_REGISTER(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag) 1181/* In LABEL_DECL nodes, nonzero means that an error message about 1182 jumping into such a binding contour has been printed for this label. */ 1183#define DECL_ERROR_ISSUED(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag) 1184/* In a FIELD_DECL, indicates this field should be bit-packed. */ 1185#define DECL_PACKED(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag) 1186/* In a FUNCTION_DECL with a non-zero DECL_CONTEXT, indicates that a 1187 static chain is not needed. */ 1188#define DECL_NO_STATIC_CHAIN(NODE) (DECL_CHECK (NODE)->decl.regdecl_flag) 1189 1190/* Nonzero in a ..._DECL means this variable is ref'd from a nested function. 1191 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes. 1192 1193 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted. 1194 1195 Also set in some languages for variables, etc., outside the normal 1196 lexical scope, such as class instance variables. */ 1197#define DECL_NONLOCAL(NODE) (DECL_CHECK (NODE)->decl.nonlocal_flag) 1198 1199/* Nonzero in a FUNCTION_DECL means this function can be substituted 1200 where it is called. */ 1201#define DECL_INLINE(NODE) (DECL_CHECK (NODE)->decl.inline_flag) 1202 1203/* Nonzero in a FUNCTION_DECL means this is a built-in function 1204 that is not specified by ansi C and that users are supposed to be allowed 1205 to redefine for any purpose whatever. */ 1206#define DECL_BUILT_IN_NONANSI(NODE) ((NODE)->common.unsigned_flag) 1207 1208/* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed 1209 specially. */ 1210#define DECL_BIT_FIELD(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag) 1211/* In a LABEL_DECL, nonzero means label was defined inside a binding 1212 contour that restored a stack level and which is now exited. */ 1213#define DECL_TOO_LATE(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag) 1214/* In a FUNCTION_DECL, nonzero means a built in function. */ 1215#define DECL_BUILT_IN(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag) 1216/* In a VAR_DECL that's static, 1217 nonzero if the space is in the text section. */ 1218#define DECL_IN_TEXT_SECTION(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag) 1219 1220/* Used in VAR_DECLs to indicate that the variable is a vtable. 1221 Used in FIELD_DECLs for vtable pointers. 1222 Used in FUNCTION_DECLs to indicate that the function is virtual. */ 1223#define DECL_VIRTUAL_P(NODE) (DECL_CHECK (NODE)->decl.virtual_flag) 1224 1225/* Used to indicate that the linkage status of this DECL is not yet known, 1226 so it should not be output now. */ 1227#define DECL_DEFER_OUTPUT(NODE) (DECL_CHECK (NODE)->decl.defer_output) 1228 1229/* Used in PARM_DECLs whose type are unions to indicate that the 1230 argument should be passed in the same way that the first union 1231 alternative would be passed. */ 1232#define DECL_TRANSPARENT_UNION(NODE) (DECL_CHECK (NODE)->decl.transparent_union) 1233 1234/* Used in FUNCTION_DECLs to indicate that they should be run automatically 1235 at the beginning or end of execution. */ 1236#define DECL_STATIC_CONSTRUCTOR(NODE) (DECL_CHECK (NODE)->decl.static_ctor_flag) 1237#define DECL_STATIC_DESTRUCTOR(NODE) (DECL_CHECK (NODE)->decl.static_dtor_flag) 1238 1239/* Used to indicate that this DECL represents a compiler-generated entity. */ 1240#define DECL_ARTIFICIAL(NODE) (DECL_CHECK (NODE)->decl.artificial_flag) 1241 1242/* Used to indicate that this DECL has weak linkage. */ 1243#define DECL_WEAK(NODE) (DECL_CHECK (NODE)->decl.weak_flag) 1244 1245/* Used in TREE_PUBLIC decls to indicate that copies of this DECL in 1246 multiple translation units should be merged. */ 1247#define DECL_ONE_ONLY(NODE) (DECL_CHECK (NODE)->decl.transparent_union) 1248
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1249/* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need 1250 not be put out unless it is needed in this translation unit. 1251 Entities like this are shared across translation units (like weak 1252 entities), but are guaranteed to be generated by any translation 1253 unit that needs them, and therefore need not be put out anywhere 1254 where they are not needed. DECL_COMDAT is just a hint to the 1255 back-end; it is up to front-ends which set this flag to ensure 1256 that there will never be any harm, other than bloat, in putting out 1257 something which is DECL_COMDAT. */ 1258#define DECL_COMDAT(NODE) (DECL_CHECK (NODE)->decl.comdat_flag) 1259 1260/* Used in FUNCTION_DECLs to indicate that function entry and exit should 1261 be instrumented with calls to support routines. */ 1262#define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) ((NODE)->decl.no_instrument_function_entry_exit) 1263 1264/* Used in FUNCTION_DECLs to indicate that in this function, 1265 check-memory-usage should be disabled. */ 1266#define DECL_NO_CHECK_MEMORY_USAGE(NODE) ((NODE)->decl.no_check_memory_usage) 1267 |
1268/* Additional flags for language-specific uses. */ 1269#define DECL_LANG_FLAG_0(NODE) (DECL_CHECK (NODE)->decl.lang_flag_0) 1270#define DECL_LANG_FLAG_1(NODE) (DECL_CHECK (NODE)->decl.lang_flag_1) 1271#define DECL_LANG_FLAG_2(NODE) (DECL_CHECK (NODE)->decl.lang_flag_2) 1272#define DECL_LANG_FLAG_3(NODE) (DECL_CHECK (NODE)->decl.lang_flag_3) 1273#define DECL_LANG_FLAG_4(NODE) (DECL_CHECK (NODE)->decl.lang_flag_4) 1274#define DECL_LANG_FLAG_5(NODE) (DECL_CHECK (NODE)->decl.lang_flag_5) 1275#define DECL_LANG_FLAG_6(NODE) (DECL_CHECK (NODE)->decl.lang_flag_6) 1276#define DECL_LANG_FLAG_7(NODE) (DECL_CHECK (NODE)->decl.lang_flag_7) 1277 1278/* Used to indicate that the pointer to this DECL cannot be treated as 1279 an address constant. */ 1280#define DECL_NON_ADDR_CONST_P(NODE) (DECL_CHECK (NODE)->decl.non_addr_const_p) 1281
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1282/* Used to indicate an alias set for the memory pointed to by this 1283 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have 1284 pointer (or reference) type. */ 1285#define DECL_POINTER_ALIAS_SET(NODE) \ 1286 (DECL_CHECK (NODE)->decl.pointer_alias_set) 1287 1288/* Nonzero if an alias set has been assigned to this declaration. */ 1289#define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \ 1290 (DECL_POINTER_ALIAS_SET (NODE) != - 1) 1291 |
1292struct tree_decl 1293{ 1294 char common[sizeof (struct tree_common)]; 1295 char *filename; 1296 int linenum; 1297 unsigned int uid; 1298 union tree_node *size; 1299#ifdef ONLY_INT_FIELDS 1300 int mode : 8; 1301#else 1302 enum machine_mode mode : 8; 1303#endif 1304 1305 unsigned external_flag : 1; 1306 unsigned nonlocal_flag : 1; 1307 unsigned regdecl_flag : 1; 1308 unsigned inline_flag : 1; 1309 unsigned bit_field_flag : 1; 1310 unsigned virtual_flag : 1; 1311 unsigned ignored_flag : 1; 1312 unsigned abstract_flag : 1; 1313 1314 unsigned in_system_header_flag : 1; 1315 unsigned common_flag : 1; 1316 unsigned defer_output : 1; 1317 unsigned transparent_union : 1; 1318 unsigned static_ctor_flag : 1; 1319 unsigned static_dtor_flag : 1; 1320 unsigned artificial_flag : 1; 1321 unsigned weak_flag : 1;
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1246 /* room for no more */
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1322 1323 unsigned lang_flag_0 : 1; 1324 unsigned lang_flag_1 : 1; 1325 unsigned lang_flag_2 : 1; 1326 unsigned lang_flag_3 : 1; 1327 unsigned lang_flag_4 : 1; 1328 unsigned lang_flag_5 : 1; 1329 unsigned lang_flag_6 : 1; 1330 unsigned lang_flag_7 : 1; 1331 1332 unsigned non_addr_const_p : 1;
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1333 unsigned no_instrument_function_entry_exit : 1; 1334 unsigned no_check_memory_usage : 1; 1335 unsigned comdat_flag : 1; |
1336 1337 /* For a FUNCTION_DECL, if inline, this is the size of frame needed. 1338 If built-in, this is the code for which built-in function. 1339 For other kinds of decls, this is DECL_ALIGN. */ 1340 union { 1341 int i; 1342 unsigned int u; 1343 enum built_in_function f; 1344 } frame_size; 1345 1346 union tree_node *name; 1347 union tree_node *context; 1348 union tree_node *arguments; 1349 union tree_node *result; 1350 union tree_node *initial; 1351 union tree_node *abstract_origin; 1352 union tree_node *assembler_name; 1353 union tree_node *section_name; 1354 union tree_node *machine_attributes; 1355 struct rtx_def *rtl; /* acts as link to register transfer language 1356 (rtl) info */ 1357 struct rtx_def *live_range_rtl; 1358 /* For FUNCTION_DECLs: points to insn that constitutes its definition 1359 on the permanent obstack. For FIELD_DECL, this is DECL_FIELD_SIZE. */ 1360 union { 1361 struct rtx_def *r; 1362 HOST_WIDE_INT i; 1363 } saved_insns; 1364 union tree_node *vindex;
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1365 int pointer_alias_set; |
1366 /* Points to a structure whose details depend on the language in use. */ 1367 struct lang_decl *lang_specific; 1368}; 1369 1370/* Define the overall contents of a tree node. 1371 It may be any of the structures declared above 1372 for various types of node. */ 1373 1374union tree_node 1375{ 1376 struct tree_common common; 1377 struct tree_int_cst int_cst; 1378 struct tree_real_cst real_cst; 1379 struct tree_string string; 1380 struct tree_complex complex; 1381 struct tree_identifier identifier; 1382 struct tree_decl decl; 1383 struct tree_type type; 1384 struct tree_list list; 1385 struct tree_vec vec; 1386 struct tree_exp exp; 1387 struct tree_block block; 1388 }; 1389
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1311#include "gansidecl.h"
1312
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1390#define NULL_TREE (tree) NULL 1391 1392/* The following functions accept a wide integer argument. Rather than 1393 having to cast on every function call, we use a macro instead, that is 1394 defined here and in rtl.h. */ 1395 1396#ifndef exact_log2 1397#define exact_log2(N) exact_log2_wide ((unsigned HOST_WIDE_INT) (N)) 1398#define floor_log2(N) floor_log2_wide ((unsigned HOST_WIDE_INT) (N)) 1399#endif 1400extern int exact_log2_wide PROTO((unsigned HOST_WIDE_INT)); 1401extern int floor_log2_wide PROTO((unsigned HOST_WIDE_INT)); 1402
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1326#if 0
1327/* At present, don't prototype xrealloc, since all of the callers don't
1328 cast their pointers to char *, and all of the xrealloc's don't use
1329 void * yet. */
1330extern char *xmalloc PROTO((size_t));
1331extern char *xcalloc PROTO((size_t, size_t));
1332extern char *xrealloc PROTO((void *, size_t));
1333#else
1334extern char *xmalloc ();
1335extern char *xcalloc ();
1336extern char *xrealloc ();
1337#endif
1338
1339extern char *xstrdup PROTO((char *));
1340
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1403extern char *oballoc PROTO((int)); 1404extern char *permalloc PROTO((int)); 1405extern char *savealloc PROTO((int)); 1406extern char *expralloc PROTO((int)); 1407 1408/* Lowest level primitive for allocating a node. 1409 The TREE_CODE is the only argument. Contents are initialized 1410 to zero except for a few of the common fields. */ 1411 1412extern tree make_node PROTO((enum tree_code)); 1413 1414/* Make a copy of a node, with all the same contents except 1415 for TREE_PERMANENT. (The copy is permanent 1416 iff nodes being made now are permanent.) */ 1417 1418extern tree copy_node PROTO((tree)); 1419 1420/* Make a copy of a chain of TREE_LIST nodes. */ 1421 1422extern tree copy_list PROTO((tree)); 1423 1424/* Make a TREE_VEC. */ 1425 1426extern tree make_tree_vec PROTO((int)); 1427 1428/* Return the (unique) IDENTIFIER_NODE node for a given name. 1429 The name is supplied as a char *. */ 1430
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1369extern tree get_identifier PROTO((char *));
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1431extern tree get_identifier PROTO((const char *)); |
1432 1433/* If an identifier with the name TEXT (a null-terminated string) has 1434 previously been referred to, return that node; otherwise return 1435 NULL_TREE. */ 1436
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1375extern tree maybe_get_identifier PROTO((char *));
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1437extern tree maybe_get_identifier PROTO((const char *)); |
1438 1439/* Construct various types of nodes. */ 1440 1441#define build_int_2(LO,HI) \ 1442 build_int_2_wide ((HOST_WIDE_INT) (LO), (HOST_WIDE_INT) (HI)) 1443 1444extern tree build PVPROTO((enum tree_code, tree, ...)); 1445extern tree build_nt PVPROTO((enum tree_code, ...)); 1446extern tree build_parse_node PVPROTO((enum tree_code, ...)); 1447 1448extern tree build_int_2_wide PROTO((HOST_WIDE_INT, HOST_WIDE_INT)); 1449extern tree build_real PROTO((tree, REAL_VALUE_TYPE)); 1450extern tree build_real_from_int_cst PROTO((tree, tree)); 1451extern tree build_complex PROTO((tree, tree, tree));
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1390extern tree build_string PROTO((int, char *));
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1452extern tree build_string PROTO((int, const char *)); |
1453extern tree build1 PROTO((enum tree_code, tree, tree)); 1454extern tree build_tree_list PROTO((tree, tree)); 1455extern tree build_decl_list PROTO((tree, tree)); 1456extern tree build_expr_list PROTO((tree, tree)); 1457extern tree build_decl PROTO((enum tree_code, tree, tree)); 1458extern tree build_block PROTO((tree, tree, tree, tree, tree));
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1397extern tree build_expr_wfl PROTO((tree, char *, int, int));
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1459extern tree build_expr_wfl PROTO((tree, const char *, int, int)); |
1460 1461/* Construct various nodes representing data types. */ 1462 1463extern tree make_signed_type PROTO((int)); 1464extern tree make_unsigned_type PROTO((int)); 1465extern void set_sizetype PROTO((tree)); 1466extern tree signed_or_unsigned_type PROTO((int, tree)); 1467extern void fixup_unsigned_type PROTO((tree)); 1468extern tree build_pointer_type PROTO((tree)); 1469extern tree build_reference_type PROTO((tree)); 1470extern tree build_index_type PROTO((tree)); 1471extern tree build_index_2_type PROTO((tree, tree)); 1472extern tree build_array_type PROTO((tree, tree)); 1473extern tree build_function_type PROTO((tree, tree)); 1474extern tree build_method_type PROTO((tree, tree)); 1475extern tree build_offset_type PROTO((tree, tree)); 1476extern tree build_complex_type PROTO((tree)); 1477extern tree array_type_nelts PROTO((tree)); 1478 1479extern tree value_member PROTO((tree, tree)); 1480extern tree purpose_member PROTO((tree, tree)); 1481extern tree binfo_member PROTO((tree, tree)); 1482extern int attribute_hash_list PROTO((tree)); 1483extern int attribute_list_equal PROTO((tree, tree)); 1484extern int attribute_list_contained PROTO((tree, tree)); 1485extern int tree_int_cst_equal PROTO((tree, tree)); 1486extern int tree_int_cst_lt PROTO((tree, tree)); 1487extern int tree_int_cst_sgn PROTO((tree)); 1488extern int index_type_equal PROTO((tree, tree)); 1489extern tree get_inner_array_type PROTO((tree)); 1490 1491/* From expmed.c. Since rtl.h is included after tree.h, we can't 1492 put the prototype here. Rtl.h does declare the prototype if 1493 tree.h had been included. */ 1494 1495extern tree make_tree PROTO((tree, struct rtx_def *)); 1496 1497/* Return a type like TTYPE except that its TYPE_ATTRIBUTES 1498 is ATTRIBUTE. 1499 1500 Such modified types already made are recorded so that duplicates 1501 are not made. */ 1502 1503extern tree build_type_attribute_variant PROTO((tree, tree)); 1504extern tree build_decl_attribute_variant PROTO((tree, tree)); 1505 1506extern tree merge_machine_decl_attributes PROTO((tree, tree)); 1507extern tree merge_machine_type_attributes PROTO((tree, tree)); 1508 1509/* Split a list of declspecs and attributes into two. */ 1510 1511extern void split_specs_attrs PROTO((tree, tree *, tree *)); 1512 1513/* Strip attributes from a list of combined specs and attrs. */ 1514 1515extern tree strip_attrs PROTO((tree)); 1516 1517/* Return 1 if an attribute and its arguments are valid for a decl or type. */ 1518 1519extern int valid_machine_attribute PROTO((tree, tree, tree, tree)); 1520 1521/* Given a tree node and a string, return non-zero if the tree node is 1522 a valid attribute name for the string. */ 1523
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1462extern int is_attribute_p PROTO((char *, tree));
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1524extern int is_attribute_p PROTO((const char *, tree)); |
1525 1526/* Given an attribute name and a list of attributes, return the list element 1527 of the attribute or NULL_TREE if not found. */ 1528
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1467extern tree lookup_attribute PROTO((char *, tree));
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1529extern tree lookup_attribute PROTO((const char *, tree)); |
1530 1531/* Given two attributes lists, return a list of their union. */ 1532 1533extern tree merge_attributes PROTO((tree, tree)); 1534
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1473/* Given a type node TYPE, and CONSTP and VOLATILEP, return a type
1474 for the same kind of data as TYPE describes.
1475 Variants point to the "main variant" (which has neither CONST nor VOLATILE)
1476 via TYPE_MAIN_VARIANT, and it points to a chain of other variants
1477 so that duplicate variants are never made.
1478 Only main variants should ever appear as types of expressions. */
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1535/* Given a type node TYPE and a TYPE_QUALIFIER_SET, return a type for 1536 the same kind of data as TYPE describes. Variants point to the 1537 "main variant" (which has no qualifiers set) via TYPE_MAIN_VARIANT, 1538 and it points to a chain of other variants so that duplicate 1539 variants are never made. Only main variants should ever appear as 1540 types of expressions. */ |
1541
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1480extern tree build_type_variant PROTO((tree, int, int));
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1542extern tree build_qualified_type PROTO((tree, int)); |
1543
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1544/* Like build_qualified_type, but only deals with the `const' and 1545 `volatile' qualifiers. This interface is retained for backwards 1546 compatiblity with the various front-ends; new code should use 1547 build_qualified_type instead. */ 1548 1549#define build_type_variant(TYPE, CONST_P, VOLATILE_P) \ 1550 build_qualified_type (TYPE, \ 1551 ((CONST_P) ? TYPE_QUAL_CONST : 0) \ 1552 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0)) 1553 |
1554/* Make a copy of a type node. */ 1555 1556extern tree build_type_copy PROTO((tree)); 1557 1558/* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT, 1559 TYPE_ALIGN and TYPE_MODE fields. 1560 If called more than once on one node, does nothing except 1561 for the first time. */ 1562 1563extern void layout_type PROTO((tree)); 1564 1565/* Given a hashcode and a ..._TYPE node (for which the hashcode was made), 1566 return a canonicalized ..._TYPE node, so that duplicates are not made. 1567 How the hash code is computed is up to the caller, as long as any two 1568 callers that could hash identical-looking type nodes agree. */ 1569 1570extern tree type_hash_canon PROTO((int, tree)); 1571 1572/* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node, 1573 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE 1574 fields. Call this only once for any given decl node. 1575 1576 Second argument is the boundary that this field can be assumed to 1577 be starting at (in bits). Zero means it can be assumed aligned 1578 on any boundary that may be needed. */ 1579 1580extern void layout_decl PROTO((tree, unsigned)); 1581 1582/* Return an expr equal to X but certainly not valid as an lvalue. */ 1583 1584extern tree non_lvalue PROTO((tree)); 1585extern tree pedantic_non_lvalue PROTO((tree)); 1586 1587extern tree convert PROTO((tree, tree)); 1588extern tree size_in_bytes PROTO((tree)); 1589extern HOST_WIDE_INT int_size_in_bytes PROTO((tree)); 1590extern tree size_binop PROTO((enum tree_code, tree, tree)); 1591extern tree ssize_binop PROTO((enum tree_code, tree, tree)); 1592extern tree size_int_wide PROTO((unsigned HOST_WIDE_INT, 1593 unsigned HOST_WIDE_INT, int)); 1594#define size_int(L) size_int_2 ((L), 0, 0) 1595#define bitsize_int(L, H) size_int_2 ((L), (H), 1) 1596#define size_int_2(L, H, T) \ 1597 size_int_wide ((unsigned HOST_WIDE_INT) (L), \ 1598 (unsigned HOST_WIDE_INT) (H), (T)) 1599 1600extern tree round_up PROTO((tree, int)); 1601extern tree get_pending_sizes PROTO((void)); 1602extern void put_pending_sizes PROTO((tree)); 1603 1604/* Type for sizes of data-type. */ 1605 1606#define BITS_PER_UNIT_LOG \ 1607 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \ 1608 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \ 1609 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256)) 1610 1611struct sizetype_tab 1612{ 1613 tree xsizetype, xbitsizetype; 1614 tree xssizetype, xusizetype; 1615 tree xsbitsizetype, xubitsizetype; 1616}; 1617 1618extern struct sizetype_tab sizetype_tab; 1619 1620#define sizetype sizetype_tab.xsizetype 1621#define bitsizetype sizetype_tab.xbitsizetype 1622#define ssizetype sizetype_tab.xssizetype 1623#define usizetype sizetype_tab.xusizetype 1624#define sbitsizetype sizetype_tab.xsbitsizetype 1625#define ubitsizetype sizetype_tab.xubitsizetype 1626 1627/* If nonzero, an upper limit on alignment of structure fields, in bits. */ 1628extern int maximum_field_alignment; 1629 1630/* If non-zero, the alignment of a bitstring or (power-)set value, in bits. */ 1631extern int set_alignment; 1632 1633/* Concatenate two lists (chains of TREE_LIST nodes) X and Y 1634 by making the last node in X point to Y. 1635 Returns X, except if X is 0 returns Y. */ 1636 1637extern tree chainon PROTO((tree, tree)); 1638 1639/* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */ 1640 1641extern tree tree_cons PROTO((tree, tree, tree)); 1642extern tree perm_tree_cons PROTO((tree, tree, tree)); 1643extern tree temp_tree_cons PROTO((tree, tree, tree)); 1644extern tree saveable_tree_cons PROTO((tree, tree, tree)); 1645extern tree decl_tree_cons PROTO((tree, tree, tree)); 1646extern tree expr_tree_cons PROTO((tree, tree, tree)); 1647 1648/* Return the last tree node in a chain. */ 1649 1650extern tree tree_last PROTO((tree)); 1651 1652/* Reverse the order of elements in a chain, and return the new head. */ 1653 1654extern tree nreverse PROTO((tree)); 1655 1656/* Returns the length of a chain of nodes 1657 (number of chain pointers to follow before reaching a null pointer). */ 1658 1659extern int list_length PROTO((tree)); 1660 1661/* integer_zerop (tree x) is nonzero if X is an integer constant of value 0 */ 1662 1663extern int integer_zerop PROTO((tree)); 1664 1665/* integer_onep (tree x) is nonzero if X is an integer constant of value 1 */ 1666 1667extern int integer_onep PROTO((tree)); 1668 1669/* integer_all_onesp (tree x) is nonzero if X is an integer constant 1670 all of whose significant bits are 1. */ 1671 1672extern int integer_all_onesp PROTO((tree)); 1673 1674/* integer_pow2p (tree x) is nonzero is X is an integer constant with 1675 exactly one bit 1. */ 1676 1677extern int integer_pow2p PROTO((tree)); 1678 1679/* staticp (tree x) is nonzero if X is a reference to data allocated 1680 at a fixed address in memory. */ 1681 1682extern int staticp PROTO((tree)); 1683 1684/* Gets an error if argument X is not an lvalue. 1685 Also returns 1 if X is an lvalue, 0 if not. */ 1686
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1615extern int lvalue_or_else PROTO((tree, char *));
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1687extern int lvalue_or_else PROTO((tree, const char *)); |
1688 1689/* save_expr (EXP) returns an expression equivalent to EXP 1690 but it can be used multiple times within context CTX 1691 and only evaluate EXP once. */ 1692 1693extern tree save_expr PROTO((tree)); 1694 1695/* Returns the index of the first non-tree operand for CODE, or the number 1696 of operands if all are trees. */ 1697 1698extern int first_rtl_op PROTO((enum tree_code)); 1699 1700/* unsave_expr (EXP) returns an expression equivalent to EXP but it 1701 can be used multiple times and will evaluate EXP, in its entirety 1702 each time. */ 1703 1704extern tree unsave_expr PROTO((tree)); 1705 1706/* unsave_expr_now (EXP) resets EXP in place, so that it can be 1707 expanded again. */ 1708 1709extern tree unsave_expr_now PROTO((tree)); 1710 1711/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size 1712 or offset that depends on a field within a record. 1713 1714 Note that we only allow such expressions within simple arithmetic 1715 or a COND_EXPR. */ 1716 1717extern int contains_placeholder_p PROTO((tree)); 1718 1719/* Return 1 if EXP contains any expressions that produce cleanups for an 1720 outer scope to deal with. Used by fold. */ 1721 1722extern int has_cleanups PROTO((tree)); 1723 1724/* Given a tree EXP, a FIELD_DECL F, and a replacement value R, 1725 return a tree with all occurrences of references to F in a 1726 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP 1727 contains only arithmetic expressions. */ 1728 1729extern tree substitute_in_expr PROTO((tree, tree, tree)); 1730 1731/* variable_size (EXP) is like save_expr (EXP) except that it 1732 is for the special case of something that is part of a 1733 variable size for a data type. It makes special arrangements 1734 to compute the value at the right time when the data type 1735 belongs to a function parameter. */ 1736 1737extern tree variable_size PROTO((tree)); 1738 1739/* stabilize_reference (EXP) returns an reference equivalent to EXP 1740 but it can be used multiple times 1741 and only evaluate the subexpressions once. */ 1742 1743extern tree stabilize_reference PROTO((tree)); 1744 1745/* Subroutine of stabilize_reference; this is called for subtrees of 1746 references. Any expression with side-effects must be put in a SAVE_EXPR 1747 to ensure that it is only evaluated once. */ 1748 1749extern tree stabilize_reference_1 PROTO((tree)); 1750 1751/* Return EXP, stripped of any conversions to wider types 1752 in such a way that the result of converting to type FOR_TYPE 1753 is the same as if EXP were converted to FOR_TYPE. 1754 If FOR_TYPE is 0, it signifies EXP's type. */ 1755 1756extern tree get_unwidened PROTO((tree, tree)); 1757 1758/* Return OP or a simpler expression for a narrower value 1759 which can be sign-extended or zero-extended to give back OP. 1760 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended 1761 or 0 if the value should be sign-extended. */ 1762 1763extern tree get_narrower PROTO((tree, int *)); 1764 1765/* Given MODE and UNSIGNEDP, return a suitable type-tree 1766 with that mode. 1767 The definition of this resides in language-specific code 1768 as the repertoire of available types may vary. */ 1769 1770extern tree type_for_mode PROTO((enum machine_mode, int)); 1771 1772/* Given PRECISION and UNSIGNEDP, return a suitable type-tree 1773 for an integer type with at least that precision. 1774 The definition of this resides in language-specific code 1775 as the repertoire of available types may vary. */ 1776 1777extern tree type_for_size PROTO((unsigned, int)); 1778 1779/* Given an integer type T, return a type like T but unsigned. 1780 If T is unsigned, the value is T. 1781 The definition of this resides in language-specific code 1782 as the repertoire of available types may vary. */ 1783 1784extern tree unsigned_type PROTO((tree)); 1785 1786/* Given an integer type T, return a type like T but signed. 1787 If T is signed, the value is T. 1788 The definition of this resides in language-specific code 1789 as the repertoire of available types may vary. */ 1790 1791extern tree signed_type PROTO((tree)); 1792 1793/* This function must be defined in the language-specific files. 1794 expand_expr calls it to build the cleanup-expression for a TARGET_EXPR. 1795 This is defined in a language-specific file. */ 1796 1797extern tree maybe_build_cleanup PROTO((tree)); 1798 1799/* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF, 1800 look for nested component-refs or array-refs at constant positions 1801 and find the ultimate containing object, which is returned. */ 1802 1803extern tree get_inner_reference PROTO((tree, int *, int *, tree *, 1804 enum machine_mode *, int *, 1805 int *, int *)); 1806 1807/* Return the FUNCTION_DECL which provides this _DECL with its context, 1808 or zero if none. */ 1809extern tree decl_function_context PROTO((tree)); 1810 1811/* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides 1812 this _DECL with its context, or zero if none. */ 1813extern tree decl_type_context PROTO((tree)); 1814 1815/* Given the FUNCTION_DECL for the current function, 1816 return zero if it is ok for this function to be inline. 1817 Otherwise return a warning message with a single %s 1818 for the function's name. */ 1819
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1748extern char *function_cannot_inline_p PROTO((tree));
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1820extern const char *function_cannot_inline_p PROTO((tree)); |
1821 1822/* Return 1 if EXPR is the real constant zero. */ 1823extern int real_zerop PROTO((tree)); 1824 1825/* Declare commonly used variables for tree structure. */ 1826 1827/* An integer constant with value 0 */ 1828extern tree integer_zero_node; 1829 1830/* An integer constant with value 1 */ 1831extern tree integer_one_node; 1832 1833/* An integer constant with value 0 whose type is sizetype. */ 1834extern tree size_zero_node; 1835 1836/* An integer constant with value 1 whose type is sizetype. */ 1837extern tree size_one_node; 1838 1839/* A constant of type pointer-to-int and value 0 */ 1840extern tree null_pointer_node; 1841 1842/* A node of type ERROR_MARK. */ 1843extern tree error_mark_node; 1844 1845/* The type node for the void type. */ 1846extern tree void_type_node; 1847 1848/* The type node for the ordinary (signed) integer type. */ 1849extern tree integer_type_node; 1850 1851/* The type node for the unsigned integer type. */ 1852extern tree unsigned_type_node; 1853 1854/* The type node for the ordinary character type. */ 1855extern tree char_type_node; 1856 1857/* Points to the name of the input file from which the current input 1858 being parsed originally came (before it went into cpp). */ 1859extern char *input_filename; 1860 1861/* Current line number in input file. */ 1862extern int lineno; 1863 1864/* Nonzero for -pedantic switch: warn about anything 1865 that standard C forbids. */ 1866extern int pedantic; 1867 1868/* Nonzero means lvalues are limited to those valid in pedantic ANSI C. 1869 Zero means allow extended lvalues. */ 1870 1871extern int pedantic_lvalues; 1872 1873/* Nonzero means can safely call expand_expr now; 1874 otherwise layout_type puts variable sizes onto `pending_sizes' instead. */ 1875 1876extern int immediate_size_expand; 1877 1878/* Points to the FUNCTION_DECL of the function whose body we are reading. */ 1879 1880extern tree current_function_decl; 1881 1882/* Nonzero if function being compiled can call setjmp. */ 1883 1884extern int current_function_calls_setjmp; 1885 1886/* Nonzero if function being compiled can call longjmp. */ 1887 1888extern int current_function_calls_longjmp; 1889 1890/* Nonzero means all ..._TYPE nodes should be allocated permanently. */ 1891 1892extern int all_types_permanent; 1893 1894/* Pointer to function to compute the name to use to print a declaration. 1895 DECL is the declaration in question. 1896 VERBOSITY determines what information will be printed: 1897 0: DECL_NAME, demangled as necessary. 1898 1: and scope information. 1899 2: and any other information that might be interesting, such as function 1900 parameter types in C++. */ 1901 1902extern char *(*decl_printable_name) PROTO((tree, int)); 1903 1904/* Pointer to function to finish handling an incomplete decl at the 1905 end of compilation. */ 1906 1907extern void (*incomplete_decl_finalize_hook) PROTO((tree)); 1908 1909/* In tree.c */ 1910extern char *perm_calloc PROTO((int, long)); 1911extern tree get_file_function_name PROTO((int));
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1912extern tree get_file_function_name_long PROTO((const char *)); |
1913extern tree get_set_constructor_bits PROTO((tree, char *, int)); 1914extern tree get_set_constructor_bytes PROTO((tree, 1915 unsigned char *, int)); 1916extern int get_alias_set PROTO((tree));
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1917extern int new_alias_set PROTO((void)); |
1918extern int (*lang_get_alias_set) PROTO((tree)); 1919 1920/* In stmt.c */ 1921 1922extern void expand_fixups PROTO((struct rtx_def *)); 1923extern tree expand_start_stmt_expr PROTO((void)); 1924extern tree expand_end_stmt_expr PROTO((tree)); 1925extern void expand_expr_stmt PROTO((tree)); 1926extern int warn_if_unused_value PROTO((tree)); 1927extern void expand_decl_init PROTO((tree)); 1928extern void clear_last_expr PROTO((void)); 1929extern void expand_label PROTO((tree)); 1930extern void expand_goto PROTO((tree)); 1931extern void expand_asm PROTO((tree)); 1932extern void expand_start_cond PROTO((tree, int)); 1933extern void expand_end_cond PROTO((void)); 1934extern void expand_start_else PROTO((void)); 1935extern void expand_start_elseif PROTO((tree)); 1936extern struct nesting *expand_start_loop PROTO((int)); 1937extern struct nesting *expand_start_loop_continue_elsewhere PROTO((int)); 1938extern void expand_loop_continue_here PROTO((void)); 1939extern void expand_end_loop PROTO((void)); 1940extern int expand_continue_loop PROTO((struct nesting *)); 1941extern int expand_exit_loop PROTO((struct nesting *)); 1942extern int expand_exit_loop_if_false PROTO((struct nesting *, 1943 tree)); 1944extern int expand_exit_something PROTO((void)); 1945 1946extern void expand_null_return PROTO((void)); 1947extern void expand_return PROTO((tree));
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1948extern int optimize_tail_recursion PROTO((tree, struct rtx_def *)); |
1949extern void expand_start_bindings PROTO((int)); 1950extern void expand_end_bindings PROTO((tree, int, int)); 1951extern void start_cleanup_deferral PROTO((void)); 1952extern void end_cleanup_deferral PROTO((void)); 1953extern void mark_block_as_eh_region PROTO((void)); 1954extern void mark_block_as_not_eh_region PROTO((void)); 1955extern int is_eh_region PROTO((void)); 1956extern int conditional_context PROTO((void)); 1957extern tree last_cleanup_this_contour PROTO((void)); 1958extern int expand_dhc_cleanup PROTO((tree)); 1959extern int expand_dcc_cleanup PROTO((tree)); 1960extern void expand_start_case PROTO((int, tree, tree,
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1886 char *));
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1961 const char *)); |
1962extern void expand_end_case PROTO((tree)); 1963extern int pushcase PROTO((tree, 1964 tree (*) (tree, tree), 1965 tree, tree *)); 1966extern int pushcase_range PROTO((tree, tree, 1967 tree (*) (tree, tree), 1968 tree, tree *)); 1969extern void using_eh_for_cleanups PROTO((void));
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1970extern int stmt_loop_nest_empty PROTO((void)); |
1971 1972/* In fold-const.c */ 1973 1974/* Fold constants as much as possible in an expression. 1975 Returns the simplified expression. 1976 Acts only on the top level of the expression; 1977 if the argument itself cannot be simplified, its 1978 subexpressions are not changed. */ 1979 1980extern tree fold PROTO((tree)); 1981 1982extern int force_fit_type PROTO((tree, int)); 1983extern int add_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1984 HOST_WIDE_INT, HOST_WIDE_INT, 1985 HOST_WIDE_INT *, HOST_WIDE_INT *)); 1986extern int neg_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1987 HOST_WIDE_INT *, HOST_WIDE_INT *)); 1988extern int mul_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1989 HOST_WIDE_INT, HOST_WIDE_INT, 1990 HOST_WIDE_INT *, HOST_WIDE_INT *)); 1991extern void lshift_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1992 HOST_WIDE_INT, int, HOST_WIDE_INT *, 1993 HOST_WIDE_INT *, int)); 1994extern void rshift_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1995 HOST_WIDE_INT, int, 1996 HOST_WIDE_INT *, HOST_WIDE_INT *, int)); 1997extern void lrotate_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 1998 HOST_WIDE_INT, int, HOST_WIDE_INT *, 1999 HOST_WIDE_INT *)); 2000extern void rrotate_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, 2001 HOST_WIDE_INT, int, HOST_WIDE_INT *, 2002 HOST_WIDE_INT *)); 2003extern int operand_equal_p PROTO((tree, tree, int)); 2004extern tree invert_truthvalue PROTO((tree)); 2005 2006/* Interface of the DWARF2 unwind info support. */ 2007 2008/* Decide whether we want to emit frame unwind information for the current 2009 translation unit. */ 2010 2011extern int dwarf2out_do_frame PROTO((void)); 2012 2013/* Generate a new label for the CFI info to refer to. */ 2014 2015extern char *dwarf2out_cfi_label PROTO((void)); 2016 2017/* Entry point to update the canonical frame address (CFA). */ 2018 2019extern void dwarf2out_def_cfa PROTO((char *, unsigned, long)); 2020 2021/* Add the CFI for saving a register window. */ 2022 2023extern void dwarf2out_window_save PROTO((char *)); 2024 2025/* Add a CFI to update the running total of the size of arguments pushed 2026 onto the stack. */ 2027 2028extern void dwarf2out_args_size PROTO((char *, long)); 2029 2030/* Entry point for saving a register to the stack. */ 2031 2032extern void dwarf2out_reg_save PROTO((char *, unsigned, long)); 2033 2034/* Entry point for saving the return address in the stack. */ 2035 2036extern void dwarf2out_return_save PROTO((char *, long)); 2037 2038/* Entry point for saving the return address in a register. */ 2039 2040extern void dwarf2out_return_reg PROTO((char *, unsigned)); 2041 2042/* Output a marker (i.e. a label) for the beginning of a function, before 2043 the prologue. */ 2044 2045extern void dwarf2out_begin_prologue PROTO((void)); 2046 2047/* Output a marker (i.e. a label) for the absolute end of the generated 2048 code for a function definition. */ 2049 2050extern void dwarf2out_end_epilogue PROTO((void)); 2051 2052/* The language front-end must define these functions. */ 2053 2054/* Function of no arguments for initializing options. */ 2055extern void lang_init_options PROTO((void)); 2056 2057/* Function of no arguments for initializing lexical scanning. */ 2058extern void init_lex PROTO((void)); 2059/* Function of no arguments for initializing the symbol table. */ 2060extern void init_decl_processing PROTO((void)); 2061 2062/* Functions called with no arguments at the beginning and end or processing 2063 the input source file. */ 2064extern void lang_init PROTO((void)); 2065extern void lang_finish PROTO((void)); 2066 2067/* Function to identify which front-end produced the output file. */ 2068extern char *lang_identify PROTO((void)); 2069 2070/* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy. */ 2071extern void copy_lang_decl PROTO((tree)); 2072 2073/* Function called with no arguments to parse and compile the input. */ 2074extern int yyparse PROTO((void)); 2075/* Function called with option as argument 2076 to decode options starting with -f or -W or +. 2077 It should return nonzero if it handles the option. */ 2078extern int lang_decode_option PROTO((int, char **)); 2079 2080/* Functions for processing symbol declarations. */ 2081/* Function to enter a new lexical scope. 2082 Takes one argument: always zero when called from outside the front end. */ 2083extern void pushlevel PROTO((int)); 2084/* Function to exit a lexical scope. It returns a BINDING for that scope. 2085 Takes three arguments: 2086 KEEP -- nonzero if there were declarations in this scope. 2087 REVERSE -- reverse the order of decls before returning them. 2088 FUNCTIONBODY -- nonzero if this level is the body of a function. */ 2089extern tree poplevel PROTO((int, int, int)); 2090/* Set the BLOCK node for the current scope level. */ 2091extern void set_block PROTO((tree)); 2092/* Function to add a decl to the current scope level. 2093 Takes one argument, a decl to add. 2094 Returns that decl, or, if the same symbol is already declared, may 2095 return a different decl for that name. */ 2096extern tree pushdecl PROTO((tree)); 2097/* Function to return the chain of decls so far in the current scope level. */ 2098extern tree getdecls PROTO((void)); 2099/* Function to return the chain of structure tags in the current scope level. */ 2100extern tree gettags PROTO((void)); 2101 2102extern tree build_range_type PROTO((tree, tree, tree)); 2103 2104/* Call when starting to parse a declaration: 2105 make expressions in the declaration last the length of the function. 2106 Returns an argument that should be passed to resume_momentary later. */ 2107extern int suspend_momentary PROTO((void)); 2108 2109extern int allocation_temporary_p PROTO((void)); 2110 2111/* Call when finished parsing a declaration: 2112 restore the treatment of node-allocation that was 2113 in effect before the suspension. 2114 YES should be the value previously returned by suspend_momentary. */ 2115extern void resume_momentary PROTO((int)); 2116 2117/* Called after finishing a record, union or enumeral type. */ 2118extern void rest_of_type_compilation PROTO((tree, int)); 2119 2120/* Save the current set of obstacks, but don't change them. */ 2121extern void push_obstacks_nochange PROTO((void)); 2122 2123extern void permanent_allocation PROTO((int)); 2124 2125extern void push_momentary PROTO((void)); 2126 2127extern void clear_momentary PROTO((void)); 2128 2129extern void pop_momentary PROTO((void)); 2130 2131extern void end_temporary_allocation PROTO((void)); 2132 2133/* Pop the obstack selection stack. */ 2134extern void pop_obstacks PROTO((void)); 2135 2136/* In tree.c */ 2137extern int really_constant_p PROTO ((tree)); 2138extern void push_obstacks PROTO ((struct obstack *, 2139 struct obstack *)); 2140extern void pop_momentary_nofree PROTO ((void)); 2141extern void preserve_momentary PROTO ((void)); 2142extern void saveable_allocation PROTO ((void)); 2143extern void temporary_allocation PROTO ((void)); 2144extern void resume_temporary_allocation PROTO ((void)); 2145extern tree get_file_function_name PROTO ((int)); 2146extern void set_identifier_size PROTO ((int)); 2147extern int int_fits_type_p PROTO ((tree, tree)); 2148extern int tree_log2 PROTO ((tree)); 2149extern void preserve_initializer PROTO ((void)); 2150extern void preserve_data PROTO ((void)); 2151extern int object_permanent_p PROTO ((tree)); 2152extern int type_precision PROTO ((tree)); 2153extern int simple_cst_equal PROTO ((tree, tree)); 2154extern int type_list_equal PROTO ((tree, tree)); 2155extern int chain_member PROTO ((tree, tree)); 2156extern int chain_member_purpose PROTO ((tree, tree)); 2157extern int chain_member_value PROTO ((tree, tree)); 2158extern tree listify PROTO ((tree)); 2159extern tree type_hash_lookup PROTO ((int, tree)); 2160extern void type_hash_add PROTO ((int, tree)); 2161extern int type_hash_list PROTO ((tree)); 2162extern int simple_cst_list_equal PROTO ((tree, tree)); 2163extern void debug_obstack PROTO ((char *)); 2164extern void rtl_in_current_obstack PROTO ((void)); 2165extern void rtl_in_saveable_obstack PROTO ((void)); 2166extern void init_tree_codes PROTO ((void)); 2167extern void dump_tree_statistics PROTO ((void));
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2092extern void print_obstack_statistics PROTO ((char *, struct obstack *));
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2168extern void print_obstack_statistics PROTO ((const char *, 2169 struct obstack *)); |
2170#ifdef BUFSIZ
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2094extern void print_obstack_name PROTO ((char *, FILE *, char *));
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2171extern void print_obstack_name PROTO ((char *, FILE *, const char *)); |
2172#endif 2173extern void expand_function_end PROTO ((char *, int, int)); 2174extern void expand_function_start PROTO ((tree, int)); 2175extern int real_onep PROTO ((tree)); 2176extern int real_twop PROTO ((tree)); 2177extern void start_identifier_warnings PROTO ((void)); 2178extern void gcc_obstack_init PROTO ((struct obstack *)); 2179extern void init_obstacks PROTO ((void)); 2180extern void obfree PROTO ((char *));
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2104extern tree tree_check PROTO ((tree, enum tree_code, char*, int, int));
2105extern tree tree_class_check PROTO ((tree, char, char*, int, int));
2106extern tree expr_check PROTO ((tree, int, char*, int, int));
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2181extern tree tree_check PROTO ((tree, enum tree_code, 2182 const char *, int, int)); 2183extern tree tree_class_check PROTO ((tree, char, const char *, 2184 int, int)); 2185extern tree expr_check PROTO ((tree, int, const char *, 2186 int, int)); |
2187 2188/* In function.c */ 2189extern void setjmp_protect_args PROTO ((void)); 2190extern void setjmp_protect PROTO ((tree)); 2191extern void expand_main_function PROTO ((void)); 2192extern void mark_varargs PROTO ((void)); 2193extern void init_function_start PROTO ((tree, char *, int)); 2194extern void assign_parms PROTO ((tree, int)); 2195extern void put_var_into_stack PROTO ((tree)); 2196extern void uninitialized_vars_warning PROTO ((tree)); 2197extern void setjmp_args_warning PROTO ((void)); 2198extern void mark_all_temps_used PROTO ((void)); 2199extern void init_temp_slots PROTO ((void)); 2200extern void combine_temp_slots PROTO ((void)); 2201extern void free_temp_slots PROTO ((void)); 2202extern void pop_temp_slots PROTO ((void)); 2203extern void push_temp_slots PROTO ((void)); 2204extern void preserve_temp_slots PROTO ((struct rtx_def *)); 2205extern int aggregate_value_p PROTO ((tree)); 2206extern tree reorder_blocks PROTO ((tree *, tree, 2207 struct rtx_def *)); 2208extern void free_temps_for_rtl_expr PROTO ((tree)); 2209extern void instantiate_virtual_regs PROTO ((tree, struct rtx_def *)); 2210extern int max_parm_reg_num PROTO ((void)); 2211extern void push_function_context PROTO ((void)); 2212extern void pop_function_context PROTO ((void)); 2213extern void push_function_context_to PROTO ((tree)); 2214extern void pop_function_context_from PROTO ((tree)); 2215 2216/* In print-rtl.c */ 2217#ifdef BUFSIZ 2218extern void print_rtl PROTO ((FILE *, struct rtx_def *)); 2219#endif 2220 2221/* In print-tree.c */ 2222extern void debug_tree PROTO ((tree)); 2223#ifdef BUFSIZ
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2144extern void print_node PROTO ((FILE *, char *, tree, int));
2145extern void print_node_brief PROTO ((FILE *, char *, tree, int));
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2224extern void print_node PROTO ((FILE *, const char *, tree, int)); 2225extern void print_node_brief PROTO ((FILE *, const char *, tree, int)); |
2226extern void indent_to PROTO ((FILE *, int)); 2227#endif 2228 2229/* In expr.c */ 2230extern void emit_queue PROTO ((void)); 2231extern int apply_args_register_offset PROTO ((int)); 2232extern struct rtx_def *expand_builtin_return_addr 2233 PROTO ((enum built_in_function, int, struct rtx_def *)); 2234extern void do_pending_stack_adjust PROTO ((void)); 2235extern struct rtx_def *expand_assignment PROTO ((tree, tree, int, int)); 2236extern struct rtx_def *store_expr PROTO ((tree, struct rtx_def *, 2237 int)); 2238extern void check_max_integer_computation_mode PROTO ((tree)); 2239 2240/* In emit-rtl.c */ 2241extern void start_sequence_for_rtl_expr PROTO ((tree)); 2242extern struct rtx_def *emit_line_note_after PROTO ((char *, int, 2243 struct rtx_def *)); 2244extern struct rtx_def *emit_line_note PROTO ((char *, int)); 2245extern struct rtx_def *emit_line_note_force PROTO ((char *, int)); 2246 2247/* In c-typeck.c */ 2248extern int mark_addressable PROTO ((tree)); 2249extern void incomplete_type_error PROTO ((tree, tree)); 2250 2251/* In c-lang.c */ 2252extern void print_lang_statistics PROTO ((void)); 2253 2254/* In c-common.c */ 2255extern tree truthvalue_conversion PROTO ((tree)); 2256extern int min_precision PROTO ((tree, int)); 2257extern void split_specs_attrs PROTO ((tree, tree *, tree *)); 2258 2259/* In c-decl.c */ 2260#ifdef BUFSIZ 2261extern void print_lang_decl PROTO ((FILE *, tree, int)); 2262extern void print_lang_type PROTO ((FILE *, tree, int)); 2263extern void print_lang_identifier PROTO ((FILE *, tree, int)); 2264#endif 2265extern int global_bindings_p PROTO ((void)); 2266extern void insert_block PROTO ((tree)); 2267 2268/* In integrate.c */ 2269extern void save_for_inline_nocopy PROTO ((tree)); 2270extern void save_for_inline_copying PROTO ((tree)); 2271extern void set_decl_abstract_flags PROTO ((tree, int)); 2272extern void output_inline_function PROTO ((tree)); 2273 2274/* In c-lex.c */ 2275extern void set_yydebug PROTO ((int)); 2276 2277/* In stor-layout.c */ 2278extern void fixup_signed_type PROTO ((tree)); 2279 2280/* varasm.c */
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2201extern void make_decl_rtl PROTO ((tree, char *, int));
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2281extern void make_decl_rtl PROTO ((tree, const char *, int)); |
2282extern void make_decl_one_only PROTO ((tree)); 2283extern int supports_one_only PROTO ((void)); 2284extern void variable_section PROTO ((tree, int)); 2285 2286/* In fold-const.c */ 2287extern int div_and_round_double PROTO ((enum tree_code, int, 2288 HOST_WIDE_INT, HOST_WIDE_INT, 2289 HOST_WIDE_INT, HOST_WIDE_INT, 2290 HOST_WIDE_INT *, 2291 HOST_WIDE_INT *, 2292 HOST_WIDE_INT *, 2293 HOST_WIDE_INT *)); 2294 2295/* In stmt.c */ 2296extern void emit_nop PROTO ((void)); 2297extern void expand_computed_goto PROTO ((tree)); 2298extern struct rtx_def *label_rtx PROTO ((tree)); 2299extern void expand_asm_operands PROTO ((tree, tree, tree, tree, int, 2300 char *, int)); 2301extern int any_pending_cleanups PROTO ((int)); 2302extern void init_stmt PROTO ((void)); 2303extern void init_stmt_for_function PROTO ((void)); 2304extern void remember_end_note PROTO ((tree)); 2305extern int drop_through_at_end_p PROTO ((void)); 2306extern void expand_start_target_temps PROTO ((void)); 2307extern void expand_end_target_temps PROTO ((void)); 2308extern void expand_elseif PROTO ((tree)); 2309extern void expand_decl PROTO ((tree)); 2310extern int expand_decl_cleanup PROTO ((tree, tree)); 2311extern void expand_anon_union_decl PROTO ((tree, tree, tree)); 2312extern void move_cleanups_up PROTO ((void)); 2313extern void expand_start_case_dummy PROTO ((void)); 2314extern void expand_end_case_dummy PROTO ((void)); 2315extern tree case_index_expr_type PROTO ((void)); 2316extern HOST_WIDE_INT all_cases_count PROTO ((tree, int *)); 2317extern void check_for_full_enumeration_handling PROTO ((tree)); 2318extern void declare_nonlocal_label PROTO ((tree)); 2319#ifdef BUFSIZ 2320extern void lang_print_xnode PROTO ((FILE *, tree, int)); 2321#endif 2322 2323 2324/* If KIND=='I', return a suitable global initializer (constructor) name. 2325 If KIND=='D', return a suitable global clean-up (destructor) name. */ 2326extern tree get_file_function_name PROTO((int)); 2327 2328/* Interface of the DWARF2 unwind info support. */ 2329 2330/* Decide whether we want to emit frame unwind information for the current 2331 translation unit. */ 2332 2333extern int dwarf2out_do_frame PROTO((void)); 2334 2335/* Generate a new label for the CFI info to refer to. */ 2336 2337extern char *dwarf2out_cfi_label PROTO((void)); 2338 2339/* Entry point to update the canonical frame address (CFA). */ 2340 2341extern void dwarf2out_def_cfa PROTO((char *, unsigned, long)); 2342 2343/* Add the CFI for saving a register window. */ 2344 2345extern void dwarf2out_window_save PROTO((char *)); 2346 2347/* Add a CFI to update the running total of the size of arguments pushed 2348 onto the stack. */ 2349 2350extern void dwarf2out_args_size PROTO((char *, long)); 2351 2352/* Entry point for saving a register to the stack. */ 2353 2354extern void dwarf2out_reg_save PROTO((char *, unsigned, long)); 2355 2356/* Entry point for saving the return address in the stack. */ 2357 2358extern void dwarf2out_return_save PROTO((char *, long)); 2359 2360/* Entry point for saving the return address in a register. */ 2361 2362extern void dwarf2out_return_reg PROTO((char *, unsigned)); 2363 2364/* Output a marker (i.e. a label) for the beginning of a function, before 2365 the prologue. */ 2366 2367extern void dwarf2out_begin_prologue PROTO((void)); 2368 2369/* Output a marker (i.e. a label) for the absolute end of the generated 2370 code for a function definition. */ 2371 2372extern void dwarf2out_end_epilogue PROTO((void));
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