1/* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 3 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to the Free 19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2002110-1301, USA. */ 21 22#ifndef GCC_RTL_H 23#define GCC_RTL_H 24 25#include <sys/param.h> 26#ifndef __PAST_END 27# define __PAST_END(array, offset) (((typeof(*(array)) *)(array))[offset]) 28#endif 29 30#include "statistics.h" 31#include "machmode.h" 32#include "input.h" 33#include "real.h" 34#include "vec.h" 35 36#undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 37#undef FLOAT /* Likewise. */ 38#undef ABS /* Likewise. */ 39#undef PC /* Likewise. */ 40 41/* Value used by some passes to "recognize" noop moves as valid 42 instructions. */ 43#define NOOP_MOVE_INSN_CODE INT_MAX 44 45/* Register Transfer Language EXPRESSIONS CODES */ 46 47#define RTX_CODE enum rtx_code 48enum rtx_code { 49 50#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , 51#include "rtl.def" /* rtl expressions are documented here */ 52#undef DEF_RTL_EXPR 53 54 LAST_AND_UNUSED_RTX_CODE}; /* A convenient way to get a value for 55 NUM_RTX_CODE. 56 Assumes default enum value assignment. */ 57 58#define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 59 /* The cast here, saves many elsewhere. */ 60 61/* Register Transfer Language EXPRESSIONS CODE CLASSES */ 62 63enum rtx_class { 64 /* We check bit 0-1 of some rtx class codes in the predicates below. */ 65 66 /* Bit 0 = comparison if 0, arithmetic is 1 67 Bit 1 = 1 if commutative. */ 68 RTX_COMPARE, /* 0 */ 69 RTX_COMM_COMPARE, 70 RTX_BIN_ARITH, 71 RTX_COMM_ARITH, 72 73 /* Must follow the four preceding values. */ 74 RTX_UNARY, /* 4 */ 75 76 RTX_EXTRA, 77 RTX_MATCH, 78 RTX_INSN, 79 80 /* Bit 0 = 1 if constant. */ 81 RTX_OBJ, /* 8 */ 82 RTX_CONST_OBJ, 83 84 RTX_TERNARY, 85 RTX_BITFIELD_OPS, 86 RTX_AUTOINC 87}; 88 89#define RTX_OBJ_MASK (~1) 90#define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) 91#define RTX_COMPARE_MASK (~1) 92#define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) 93#define RTX_ARITHMETIC_MASK (~1) 94#define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) 95#define RTX_BINARY_MASK (~3) 96#define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) 97#define RTX_COMMUTATIVE_MASK (~2) 98#define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) 99#define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) 100 101extern const unsigned char rtx_length[NUM_RTX_CODE]; 102#define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 103 104extern const char * const rtx_name[NUM_RTX_CODE]; 105#define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 106 107extern const char * const rtx_format[NUM_RTX_CODE]; 108#define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 109 110extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 111#define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 112 113extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 114extern const unsigned char rtx_next[NUM_RTX_CODE]; 115 116/* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 117 relative to which the offsets are calculated, as explained in rtl.def. */ 118typedef struct 119{ 120 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 121 unsigned min_align: 8; 122 /* Flags: */ 123 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 124 unsigned min_after_vec: 1; /* minimum address target label is 125 after the ADDR_DIFF_VEC. */ 126 unsigned max_after_vec: 1; /* maximum address target label is 127 after the ADDR_DIFF_VEC. */ 128 unsigned min_after_base: 1; /* minimum address target label is 129 after BASE. */ 130 unsigned max_after_base: 1; /* maximum address target label is 131 after BASE. */ 132 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 133 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 134 unsigned : 2; 135 unsigned scale : 8; 136} addr_diff_vec_flags; 137 138/* Structure used to describe the attributes of a MEM. These are hashed 139 so MEMs that the same attributes share a data structure. This means 140 they cannot be modified in place. If any element is nonzero, it means 141 the value of the corresponding attribute is unknown. */ 142/* ALIGN and SIZE are the alignment and size of the MEM itself, 143 while EXPR can describe a larger underlying object, which might have a 144 stricter alignment; OFFSET is the offset of the MEM within that object. */ 145typedef struct mem_attrs GTY(()) 146{ 147 HOST_WIDE_INT alias; /* Memory alias set. */ 148 tree expr; /* expr corresponding to MEM. */ 149 rtx offset; /* Offset from start of DECL, as CONST_INT. */ 150 rtx size; /* Size in bytes, as a CONST_INT. */ 151 unsigned int align; /* Alignment of MEM in bits. */ 152} mem_attrs; 153 154/* Structure used to describe the attributes of a REG in similar way as 155 mem_attrs does for MEM above. */ 156 157typedef struct reg_attrs GTY(()) 158{ 159 tree decl; /* decl corresponding to REG. */ 160 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 161} reg_attrs; 162 163/* Common union for an element of an rtx. */ 164 165union rtunion_def 166{ 167 int rt_int; 168 unsigned int rt_uint; 169 const char *rt_str; 170 rtx rt_rtx; 171 rtvec rt_rtvec; 172 enum machine_mode rt_type; 173 addr_diff_vec_flags rt_addr_diff_vec_flags; 174 struct cselib_val_struct *rt_cselib; 175 struct bitmap_head_def *rt_bit; 176 tree rt_tree; 177 struct basic_block_def *rt_bb; 178 mem_attrs *rt_mem; 179 reg_attrs *rt_reg; 180 struct constant_descriptor_rtx *rt_constant; 181}; 182typedef union rtunion_def rtunion; 183 184/* This structure remembers the position of a SYMBOL_REF within an 185 object_block structure. A SYMBOL_REF only provides this information 186 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 187struct block_symbol GTY(()) { 188 /* The usual SYMBOL_REF fields. */ 189 rtunion GTY ((skip)) fld[3]; 190 191 /* The block that contains this object. */ 192 struct object_block *block; 193 194 /* The offset of this object from the start of its block. It is negative 195 if the symbol has not yet been assigned an offset. */ 196 HOST_WIDE_INT offset; 197}; 198 199DEF_VEC_P(rtx); 200DEF_VEC_ALLOC_P(rtx,heap); 201DEF_VEC_ALLOC_P(rtx,gc); 202 203/* Describes a group of objects that are to be placed together in such 204 a way that their relative positions are known. */ 205struct object_block GTY(()) 206{ 207 /* The section in which these objects should be placed. */ 208 section *sect; 209 210 /* The alignment of the first object, measured in bits. */ 211 unsigned int alignment; 212 213 /* The total size of the objects, measured in bytes. */ 214 HOST_WIDE_INT size; 215 216 /* The SYMBOL_REFs for each object. The vector is sorted in 217 order of increasing offset and the following conditions will 218 hold for each element X: 219 220 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 221 !SYMBOL_REF_ANCHOR_P (X) 222 SYMBOL_REF_BLOCK (X) == [address of this structure] 223 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 224 VEC(rtx,gc) *objects; 225 226 /* All the anchor SYMBOL_REFs used to address these objects, sorted 227 in order of increasing offset, and then increasing TLS model. 228 The following conditions will hold for each element X in this vector: 229 230 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 231 SYMBOL_REF_ANCHOR_P (X) 232 SYMBOL_REF_BLOCK (X) == [address of this structure] 233 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 234 VEC(rtx,gc) *anchors; 235}; 236 237/* RTL expression ("rtx"). */ 238 239struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"), 240 chain_prev ("RTX_PREV (&%h)"))) 241{ 242 /* The kind of expression this is. */ 243 ENUM_BITFIELD(rtx_code) code: 16; 244 245 /* The kind of value the expression has. */ 246 ENUM_BITFIELD(machine_mode) mode : 8; 247 248 /* 1 in a MEM if we should keep the alias set for this mem unchanged 249 when we access a component. 250 1 in a CALL_INSN if it is a sibling call. 251 1 in a SET that is for a return. 252 In a CODE_LABEL, part of the two-bit alternate entry field. */ 253 unsigned int jump : 1; 254 /* In a CODE_LABEL, part of the two-bit alternate entry field. 255 1 in a MEM if it cannot trap. */ 256 unsigned int call : 1; 257 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 258 1 in a SUBREG if it references an unsigned object whose mode has been 259 from a promoted to a wider mode. 260 1 in a SYMBOL_REF if it addresses something in the per-function 261 constants pool. 262 1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call. 263 1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */ 264 unsigned int unchanging : 1; 265 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 266 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 267 if it has been deleted. 268 1 in a REG expression if corresponds to a variable declared by the user, 269 0 for an internally generated temporary. 270 1 in a SUBREG with a negative value. 271 1 in a LABEL_REF or in a REG_LABEL note for a non-local label. 272 In a SYMBOL_REF, this flag is used for machine-specific purposes. */ 273 unsigned int volatil : 1; 274 /* 1 in a MEM referring to a field of an aggregate. 275 0 if the MEM was a variable or the result of a * operator in C; 276 1 if it was the result of a . or -> operator (on a struct) in C. 277 1 in a REG if the register is used only in exit code a loop. 278 1 in a SUBREG expression if was generated from a variable with a 279 promoted mode. 280 1 in a CODE_LABEL if the label is used for nonlocal gotos 281 and must not be deleted even if its count is zero. 282 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 283 together with the preceding insn. Valid only within sched. 284 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 285 from the target of a branch. Valid from reorg until end of compilation; 286 cleared before used. */ 287 unsigned int in_struct : 1; 288 /* At the end of RTL generation, 1 if this rtx is used. This is used for 289 copying shared structure. See `unshare_all_rtl'. 290 In a REG, this is not needed for that purpose, and used instead 291 in `leaf_renumber_regs_insn'. 292 1 in a SYMBOL_REF, means that emit_library_call 293 has used it as the function. */ 294 unsigned int used : 1; 295 /* 1 in an INSN or a SET if this rtx is related to the call frame, 296 either changing how we compute the frame address or saving and 297 restoring registers in the prologue and epilogue. 298 1 in a REG or MEM if it is a pointer. 299 1 in a SYMBOL_REF if it addresses something in the per-function 300 constant string pool. */ 301 unsigned frame_related : 1; 302 /* 1 in a REG or PARALLEL that is the current function's return value. 303 1 in a MEM if it refers to a scalar. 304 1 in a SYMBOL_REF for a weak symbol. */ 305 unsigned return_val : 1; 306 307 /* The first element of the operands of this rtx. 308 The number of operands and their types are controlled 309 by the `code' field, according to rtl.def. */ 310 union u { 311 rtunion fld[1]; 312 HOST_WIDE_INT hwint[1]; 313 struct block_symbol block_sym; 314 struct real_value rv; 315 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 316}; 317 318/* The size in bytes of an rtx header (code, mode and flags). */ 319#define RTX_HDR_SIZE offsetof (struct rtx_def, u) 320 321/* The size in bytes of an rtx with code CODE. */ 322#define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 323 324#define NULL_RTX (rtx) 0 325 326/* The "next" and "previous" RTX, relative to this one. */ 327 328#define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 329 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 330 331/* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 332 */ 333#define RTX_PREV(X) ((INSN_P (X) \ 334 || NOTE_P (X) \ 335 || BARRIER_P (X) \ 336 || LABEL_P (X)) \ 337 && PREV_INSN (X) != NULL \ 338 && NEXT_INSN (PREV_INSN (X)) == X \ 339 ? PREV_INSN (X) : NULL) 340 341/* Define macros to access the `code' field of the rtx. */ 342 343#define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 344#define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 345 346#define GET_MODE(RTX) ((enum machine_mode) (RTX)->mode) 347#define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 348 349/* RTL vector. These appear inside RTX's when there is a need 350 for a variable number of things. The principle use is inside 351 PARALLEL expressions. */ 352 353struct rtvec_def GTY(()) { 354 int num_elem; /* number of elements */ 355 rtx GTY ((length ("%h.num_elem"))) elem[1]; 356}; 357 358#define NULL_RTVEC (rtvec) 0 359 360#define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 361#define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 362 363/* Predicate yielding nonzero iff X is an rtx for a register. */ 364#define REG_P(X) (GET_CODE (X) == REG) 365 366/* Predicate yielding nonzero iff X is an rtx for a memory location. */ 367#define MEM_P(X) (GET_CODE (X) == MEM) 368 369/* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 370#define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 371 372/* Predicate yielding nonzero iff X is a label insn. */ 373#define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 374 375/* Predicate yielding nonzero iff X is a jump insn. */ 376#define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 377 378/* Predicate yielding nonzero iff X is a call insn. */ 379#define CALL_P(X) (GET_CODE (X) == CALL_INSN) 380 381/* Predicate yielding nonzero iff X is an insn that cannot jump. */ 382#define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 383 384/* Predicate yielding nonzero iff X is a real insn. */ 385#define INSN_P(X) \ 386 (NONJUMP_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 387 388/* Predicate yielding nonzero iff X is a note insn. */ 389#define NOTE_P(X) (GET_CODE (X) == NOTE) 390 391/* Predicate yielding nonzero iff X is a barrier insn. */ 392#define BARRIER_P(X) (GET_CODE (X) == BARRIER) 393 394/* Predicate yielding nonzero iff X is a data for a jump table. */ 395#define JUMP_TABLE_DATA_P(INSN) \ 396 (JUMP_P (INSN) && (GET_CODE (PATTERN (INSN)) == ADDR_VEC || \ 397 GET_CODE (PATTERN (INSN)) == ADDR_DIFF_VEC)) 398 399/* 1 if X is a unary operator. */ 400 401#define UNARY_P(X) \ 402 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 403 404/* 1 if X is a binary operator. */ 405 406#define BINARY_P(X) \ 407 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 408 409/* 1 if X is an arithmetic operator. */ 410 411#define ARITHMETIC_P(X) \ 412 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 413 == RTX_ARITHMETIC_RESULT) 414 415/* 1 if X is an arithmetic operator. */ 416 417#define COMMUTATIVE_ARITH_P(X) \ 418 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 419 420/* 1 if X is a commutative arithmetic operator or a comparison operator. 421 These two are sometimes selected together because it is possible to 422 swap the two operands. */ 423 424#define SWAPPABLE_OPERANDS_P(X) \ 425 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 426 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 427 | (1 << RTX_COMPARE))) 428 429/* 1 if X is a non-commutative operator. */ 430 431#define NON_COMMUTATIVE_P(X) \ 432 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 433 == RTX_NON_COMMUTATIVE_RESULT) 434 435/* 1 if X is a commutative operator on integers. */ 436 437#define COMMUTATIVE_P(X) \ 438 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 439 == RTX_COMMUTATIVE_RESULT) 440 441/* 1 if X is a relational operator. */ 442 443#define COMPARISON_P(X) \ 444 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 445 446/* 1 if X is a constant value that is an integer. */ 447 448#define CONSTANT_P(X) \ 449 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 450 451/* 1 if X can be used to represent an object. */ 452#define OBJECT_P(X) \ 453 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 454 455/* General accessor macros for accessing the fields of an rtx. */ 456 457#if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 458/* The bit with a star outside the statement expr and an & inside is 459 so that N can be evaluated only once. */ 460#define RTL_CHECK1(RTX, N, C1) __extension__ \ 461(*({ rtx const _rtx = (RTX); const int _n = (N); \ 462 const enum rtx_code _code = GET_CODE (_rtx); \ 463 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 464 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 465 __FUNCTION__); \ 466 if (GET_RTX_FORMAT(_code)[_n] != C1) \ 467 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 468 __FUNCTION__); \ 469 &_rtx->u.fld[_n]; })) 470 471#define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 472(*({ rtx const _rtx = (RTX); const int _n = (N); \ 473 const enum rtx_code _code = GET_CODE (_rtx); \ 474 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 475 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 476 __FUNCTION__); \ 477 if (GET_RTX_FORMAT(_code)[_n] != C1 \ 478 && GET_RTX_FORMAT(_code)[_n] != C2) \ 479 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 480 __FUNCTION__); \ 481 &_rtx->u.fld[_n]; })) 482 483#define RTL_CHECKC1(RTX, N, C) __extension__ \ 484(*({ rtx const _rtx = (RTX); const int _n = (N); \ 485 if (GET_CODE (_rtx) != (C)) \ 486 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 487 __FUNCTION__); \ 488 &_rtx->u.fld[_n]; })) 489 490#define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 491(*({ rtx const _rtx = (RTX); const int _n = (N); \ 492 const enum rtx_code _code = GET_CODE (_rtx); \ 493 if (_code != (C1) && _code != (C2)) \ 494 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 495 __FUNCTION__); \ 496 &_rtx->u.fld[_n]; })) 497 498#define RTVEC_ELT(RTVEC, I) __extension__ \ 499(*({ rtvec const _rtvec = (RTVEC); const int _i = (I); \ 500 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 501 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 502 __FUNCTION__); \ 503 &_rtvec->elem[_i]; })) 504 505#define XWINT(RTX, N) __extension__ \ 506(*({ rtx const _rtx = (RTX); const int _n = (N); \ 507 const enum rtx_code _code = GET_CODE (_rtx); \ 508 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 509 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 510 __FUNCTION__); \ 511 if (GET_RTX_FORMAT(_code)[_n] != 'w') \ 512 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 513 __FUNCTION__); \ 514 &_rtx->u.hwint[_n]; })) 515 516#define XCWINT(RTX, N, C) __extension__ \ 517(*({ rtx const _rtx = (RTX); \ 518 if (GET_CODE (_rtx) != (C)) \ 519 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 520 __FUNCTION__); \ 521 &_rtx->u.hwint[N]; })) 522 523#define XCMWINT(RTX, N, C, M) __extension__ \ 524(*({ rtx const _rtx = (RTX); \ 525 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 526 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 527 __LINE__, __FUNCTION__); \ 528 &_rtx->u.hwint[N]; })) 529 530#define XCNMPRV(RTX, C, M) __extension__ \ 531({ rtx const _rtx = (RTX); \ 532 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 533 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 534 __LINE__, __FUNCTION__); \ 535 &_rtx->u.rv; }) 536 537#define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 538({ rtx const _symbol = (RTX); \ 539 unsigned int flags = RTL_CHECKC1 (_symbol, 1, SYMBOL_REF).rt_int; \ 540 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 541 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 542 __FUNCTION__); \ 543 &_symbol->u.block_sym; }) 544 545extern void rtl_check_failed_bounds (rtx, int, const char *, int, 546 const char *) 547 ATTRIBUTE_NORETURN; 548extern void rtl_check_failed_type1 (rtx, int, int, const char *, int, 549 const char *) 550 ATTRIBUTE_NORETURN; 551extern void rtl_check_failed_type2 (rtx, int, int, int, const char *, 552 int, const char *) 553 ATTRIBUTE_NORETURN; 554extern void rtl_check_failed_code1 (rtx, enum rtx_code, const char *, 555 int, const char *) 556 ATTRIBUTE_NORETURN; 557extern void rtl_check_failed_code2 (rtx, enum rtx_code, enum rtx_code, 558 const char *, int, const char *) 559 ATTRIBUTE_NORETURN; 560extern void rtl_check_failed_code_mode (rtx, enum rtx_code, enum machine_mode, 561 bool, const char *, int, const char *) 562 ATTRIBUTE_NORETURN; 563extern void rtl_check_failed_block_symbol (const char *, int, const char *) 564 ATTRIBUTE_NORETURN; 565extern void rtvec_check_failed_bounds (rtvec, int, const char *, int, 566 const char *) 567 ATTRIBUTE_NORETURN; 568 569#else /* not ENABLE_RTL_CHECKING */ 570 571#define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 572#define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 573#define RTL_CHECKC1(RTX, N, C) __PAST_END((RTX)->u.fld, N) 574#define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 575#define RTVEC_ELT(RTVEC, I) __PAST_END((RTVEC)->elem, I) 576#define XWINT(RTX, N) ((RTX)->u.hwint[N]) 577#define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 578#define XCMWINT(RTX, N, C, M) __PAST_END((RTX)->u.hwint, N) 579#define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 580#define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 581#define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 582 583#endif 584 585/* General accessor macros for accessing the flags of an rtx. */ 586 587/* Access an individual rtx flag, with no checking of any kind. */ 588#define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 589 590#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 591#define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 592({ rtx const _rtx = (RTX); \ 593 if (GET_CODE(_rtx) != C1) \ 594 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 595 __FUNCTION__); \ 596 _rtx; }) 597 598#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 599({ rtx const _rtx = (RTX); \ 600 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2) \ 601 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 602 __FUNCTION__); \ 603 _rtx; }) 604 605#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 606({ rtx const _rtx = (RTX); \ 607 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 608 && GET_CODE(_rtx) != C3) \ 609 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 610 __FUNCTION__); \ 611 _rtx; }) 612 613#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 614({ rtx const _rtx = (RTX); \ 615 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 616 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4) \ 617 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 618 __FUNCTION__); \ 619 _rtx; }) 620 621#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 622({ rtx const _rtx = (RTX); \ 623 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 624 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 625 && GET_CODE(_rtx) != C5) \ 626 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 627 __FUNCTION__); \ 628 _rtx; }) 629 630#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 631 __extension__ \ 632({ rtx const _rtx = (RTX); \ 633 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 634 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 635 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6) \ 636 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 637 __FUNCTION__); \ 638 _rtx; }) 639 640#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 641 __extension__ \ 642({ rtx const _rtx = (RTX); \ 643 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 644 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 645 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 646 && GET_CODE(_rtx) != C7) \ 647 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 648 __FUNCTION__); \ 649 _rtx; }) 650 651#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) \ 652 __extension__ \ 653({ rtx const _rtx = (RTX); \ 654 if (GET_CODE(_rtx) != C1 && GET_CODE(_rtx) != C2 \ 655 && GET_CODE(_rtx) != C3 && GET_CODE(_rtx) != C4 \ 656 && GET_CODE(_rtx) != C5 && GET_CODE(_rtx) != C6 \ 657 && GET_CODE(_rtx) != C7 && GET_CODE(_rtx) != C8) \ 658 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 659 __FUNCTION__); \ 660 _rtx; }) 661 662extern void rtl_check_failed_flag (const char *, rtx, const char *, 663 int, const char *) 664 ATTRIBUTE_NORETURN 665 ; 666 667#else /* not ENABLE_RTL_FLAG_CHECKING */ 668 669#define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 670#define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 671#define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 672#define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 673#define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 674#define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 675#define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 676#define RTL_FLAG_CHECK8(NAME, RTX, C1, C2, C3, C4, C5, C6, C7, C8) (RTX) 677#endif 678 679#define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 680#define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 681#define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 682#define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 683#define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 684#define XBITMAP(RTX, N) (RTL_CHECK1 (RTX, N, 'b').rt_bit) 685#define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 686#define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 687#define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 688 689#define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 690#define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 691 692/* These are like XINT, etc. except that they expect a '0' field instead 693 of the normal type code. */ 694 695#define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 696#define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 697#define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 698#define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 699#define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 700#define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 701#define X0BITMAP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bit) 702#define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 703#define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 704#define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 705#define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 706#define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 707#define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 708#define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 709 710/* Access a '0' field with any type. */ 711#define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 712 713#define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 714#define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 715#define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 716#define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 717#define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 718#define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 719#define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit) 720#define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 721#define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 722#define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 723 724#define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 725#define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 726 727#define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 728 729/* ACCESS MACROS for particular fields of insns. */ 730 731/* Holds a unique number for each insn. 732 These are not necessarily sequentially increasing. */ 733#define INSN_UID(INSN) XINT (INSN, 0) 734 735/* Chain insns together in sequence. */ 736#define PREV_INSN(INSN) XEXP (INSN, 1) 737#define NEXT_INSN(INSN) XEXP (INSN, 2) 738 739#define BLOCK_FOR_INSN(INSN) XBBDEF (INSN, 3) 740#define INSN_LOCATOR(INSN) XINT (INSN, 4) 741/* The body of an insn. */ 742#define PATTERN(INSN) XEXP (INSN, 5) 743 744/* Code number of instruction, from when it was recognized. 745 -1 means this instruction has not been recognized yet. */ 746#define INSN_CODE(INSN) XINT (INSN, 6) 747 748/* Set up in flow.c; empty before then. 749 Holds a chain of INSN_LIST rtx's whose first operands point at 750 previous insns with direct data-flow connections to this one. 751 That means that those insns set variables whose next use is in this insn. 752 They are always in the same basic block as this insn. */ 753#define LOG_LINKS(INSN) XEXP(INSN, 7) 754 755#define RTX_FRAME_RELATED_P(RTX) \ 756 (RTL_FLAG_CHECK5("RTX_FRAME_RELATED_P", (RTX), INSN, CALL_INSN, \ 757 JUMP_INSN, BARRIER, SET)->frame_related) 758 759/* 1 if RTX is an insn that has been deleted. */ 760#define INSN_DELETED_P(RTX) \ 761 (RTL_FLAG_CHECK6("INSN_DELETED_P", (RTX), INSN, CALL_INSN, JUMP_INSN, \ 762 CODE_LABEL, BARRIER, NOTE)->volatil) 763 764/* 1 if RTX is a call to a const or pure function. */ 765#define CONST_OR_PURE_CALL_P(RTX) \ 766 (RTL_FLAG_CHECK3("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN, NOTE, \ 767 EXPR_LIST)->unchanging) 768 769/* 1 if RTX is a call_insn for a sibling call. */ 770#define SIBLING_CALL_P(RTX) \ 771 (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 772 773/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 774#define INSN_ANNULLED_BRANCH_P(RTX) \ 775 (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging) 776 777/* 1 if RTX is an insn in a delay slot and is from the target of the branch. 778 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 779 executed if the branch is taken. For annulled branches with this bit 780 clear, the insn should be executed only if the branch is not taken. */ 781#define INSN_FROM_TARGET_P(RTX) \ 782 (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) 783 784/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 785 See the comments for ADDR_DIFF_VEC in rtl.def. */ 786#define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) 787 788/* In a VALUE, the value cselib has assigned to RTX. 789 This is a "struct cselib_val_struct", see cselib.h. */ 790#define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) 791 792/* Holds a list of notes on what this insn does to various REGs. 793 It is a chain of EXPR_LIST rtx's, where the second operand is the 794 chain pointer and the first operand is the REG being described. 795 The mode field of the EXPR_LIST contains not a real machine mode 796 but a value from enum reg_note. */ 797#define REG_NOTES(INSN) XEXP(INSN, 8) 798 799enum reg_note 800{ 801#define DEF_REG_NOTE(NAME) NAME, 802#include "reg-notes.def" 803#undef DEF_REG_NOTE 804 REG_NOTE_MAX 805}; 806 807/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 808#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 809#define PUT_REG_NOTE_KIND(LINK, KIND) \ 810 PUT_MODE (LINK, (enum machine_mode) (KIND)) 811 812/* Names for REG_NOTE's in EXPR_LIST insn's. */ 813 814extern const char * const reg_note_name[]; 815#define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 816 817/* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 818 USE and CLOBBER expressions. 819 USE expressions list the registers filled with arguments that 820 are passed to the function. 821 CLOBBER expressions document the registers explicitly clobbered 822 by this CALL_INSN. 823 Pseudo registers can not be mentioned in this list. */ 824#define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 9) 825 826/* The label-number of a code-label. The assembler label 827 is made from `L' and the label-number printed in decimal. 828 Label numbers are unique in a compilation. */ 829#define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) 830 831/* In a NOTE that is a line number, this is a string for the file name that the 832 line is in. We use the same field to record block numbers temporarily in 833 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 834 between ints and pointers if we use a different macro for the block number.) 835 */ 836 837/* Opaque data. */ 838#define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 4, NOTE) 839#define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 4, NOTE) 840#ifdef USE_MAPPED_LOCATION 841#define NOTE_SOURCE_LOCATION(INSN) XCUINT (INSN, 5, NOTE) 842#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \ 843 (XLOC) = expand_location (NOTE_SOURCE_LOCATION (INSN)) 844#define SET_INSN_DELETED(INSN) \ 845 (PUT_CODE (INSN, NOTE), NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED) 846#else 847#define NOTE_EXPANDED_LOCATION(XLOC, INSN) \ 848 ((XLOC).file = NOTE_SOURCE_FILE (INSN), \ 849 (XLOC).line = NOTE_LINE_NUMBER (INSN)) 850#define NOTE_SOURCE_FILE(INSN) XCSTR (INSN, 4, NOTE) 851#define SET_INSN_DELETED(INSN) \ 852 (PUT_CODE (INSN, NOTE), NOTE_SOURCE_FILE (INSN) = 0, \ 853 NOTE_LINE_NUMBER (INSN) = NOTE_INSN_DELETED) 854#endif 855#define NOTE_BLOCK(INSN) XCTREE (INSN, 4, NOTE) 856#define NOTE_EH_HANDLER(INSN) XCINT (INSN, 4, NOTE) 857#define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 4, NOTE) 858#define NOTE_EXPECTED_VALUE(INSN) XCEXP (INSN, 4, NOTE) 859#define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 4, NOTE) 860 861/* In a NOTE that is a line number, this is the line number. 862 Other kinds of NOTEs are identified by negative numbers here. */ 863#define NOTE_LINE_NUMBER(INSN) XCINT (INSN, 5, NOTE) 864 865/* Nonzero if INSN is a note marking the beginning of a basic block. */ 866#define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 867 (GET_CODE (INSN) == NOTE \ 868 && NOTE_LINE_NUMBER (INSN) == NOTE_INSN_BASIC_BLOCK) 869 870/* Variable declaration and the location of a variable. */ 871#define NOTE_VAR_LOCATION_DECL(INSN) (XCTREE (XCEXP (INSN, 4, NOTE), \ 872 0, VAR_LOCATION)) 873#define NOTE_VAR_LOCATION_LOC(INSN) (XCEXP (XCEXP (INSN, 4, NOTE), \ 874 1, VAR_LOCATION)) 875 876/* Codes that appear in the NOTE_LINE_NUMBER field for kinds of notes 877 that are not line numbers. These codes are all negative. 878 879 Notice that we do not try to use zero here for any of 880 the special note codes because sometimes the source line 881 actually can be zero! This happens (for example) when we 882 are generating code for the per-translation-unit constructor 883 and destructor routines for some C++ translation unit. */ 884 885enum insn_note 886{ 887 /* Keep all of these numbers negative. Adjust as needed. */ 888 NOTE_INSN_BIAS = -100, 889 890#define DEF_INSN_NOTE(NAME) NAME, 891#include "insn-notes.def" 892#undef DEF_INSN_NOTE 893 894 NOTE_INSN_MAX 895}; 896 897/* Names for NOTE insn's other than line numbers. */ 898 899extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; 900#define GET_NOTE_INSN_NAME(NOTE_CODE) \ 901 (note_insn_name[(NOTE_CODE) - (int) NOTE_INSN_BIAS]) 902 903/* The name of a label, in case it corresponds to an explicit label 904 in the input source code. */ 905#define LABEL_NAME(RTX) XCSTR (RTX, 7, CODE_LABEL) 906 907/* In jump.c, each label contains a count of the number 908 of LABEL_REFs that point at it, so unused labels can be deleted. */ 909#define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) 910 911/* Labels carry a two-bit field composed of the ->jump and ->call 912 bits. This field indicates whether the label is an alternate 913 entry point, and if so, what kind. */ 914enum label_kind 915{ 916 LABEL_NORMAL = 0, /* ordinary label */ 917 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 918 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 919 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 920}; 921 922#if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 923 924/* Retrieve the kind of LABEL. */ 925#define LABEL_KIND(LABEL) __extension__ \ 926({ rtx const _label = (LABEL); \ 927 if (GET_CODE (_label) != CODE_LABEL) \ 928 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 929 __FUNCTION__); \ 930 (enum label_kind) ((_label->jump << 1) | _label->call); }) 931 932/* Set the kind of LABEL. */ 933#define SET_LABEL_KIND(LABEL, KIND) do { \ 934 rtx _label = (LABEL); \ 935 unsigned int _kind = (KIND); \ 936 if (GET_CODE (_label) != CODE_LABEL) \ 937 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 938 __FUNCTION__); \ 939 _label->jump = ((_kind >> 1) & 1); \ 940 _label->call = (_kind & 1); \ 941} while (0) 942 943#else 944 945/* Retrieve the kind of LABEL. */ 946#define LABEL_KIND(LABEL) \ 947 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 948 949/* Set the kind of LABEL. */ 950#define SET_LABEL_KIND(LABEL, KIND) do { \ 951 rtx _label = (LABEL); \ 952 unsigned int _kind = (KIND); \ 953 _label->jump = ((_kind >> 1) & 1); \ 954 _label->call = (_kind & 1); \ 955} while (0) 956 957#endif /* rtl flag checking */ 958 959#define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 960 961/* In jump.c, each JUMP_INSN can point to a label that it can jump to, 962 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 963 be decremented and possibly the label can be deleted. */ 964#define JUMP_LABEL(INSN) XCEXP (INSN, 9, JUMP_INSN) 965 966/* Once basic blocks are found in flow.c, 967 each CODE_LABEL starts a chain that goes through 968 all the LABEL_REFs that jump to that label. 969 The chain eventually winds up at the CODE_LABEL: it is circular. */ 970#define LABEL_REFS(LABEL) XCEXP (LABEL, 5, CODE_LABEL) 971 972/* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds 973 the number the register originally had; for a pseudo register turned into 974 a hard reg this will hold the old pseudo register number. */ 975 976#define REGNO(RTX) XCUINT (RTX, 0, REG) 977#define ORIGINAL_REGNO(RTX) X0UINT (RTX, 1) 978 979/* 1 if RTX is a reg or parallel that is the current function's return 980 value. */ 981#define REG_FUNCTION_VALUE_P(RTX) \ 982 (RTL_FLAG_CHECK2("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 983 984/* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 985#define REG_USERVAR_P(RTX) \ 986 (RTL_FLAG_CHECK1("REG_USERVAR_P", (RTX), REG)->volatil) 987 988/* 1 if RTX is a reg that holds a pointer value. */ 989#define REG_POINTER(RTX) \ 990 (RTL_FLAG_CHECK1("REG_POINTER", (RTX), REG)->frame_related) 991 992/* 1 if RTX is a mem that holds a pointer value. */ 993#define MEM_POINTER(RTX) \ 994 (RTL_FLAG_CHECK1("MEM_POINTER", (RTX), MEM)->frame_related) 995 996/* 1 if the given register REG corresponds to a hard register. */ 997#define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 998 999/* 1 if the given register number REG_NO corresponds to a hard register. */ 1000#define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1001 1002/* For a CONST_INT rtx, INTVAL extracts the integer. */ 1003#define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) 1004#define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1005 1006/* For a CONST_DOUBLE: 1007 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1008 low-order word and ..._HIGH the high-order. 1009 For a float, there is a REAL_VALUE_TYPE structure, and 1010 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1011#define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1012#define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1013#define CONST_DOUBLE_REAL_VALUE(r) \ 1014 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1015 1016/* For a CONST_VECTOR, return element #n. */ 1017#define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1018 1019/* For a CONST_VECTOR, return the number of elements in a vector. */ 1020#define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1021 1022/* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1023 SUBREG_BYTE extracts the byte-number. */ 1024 1025#define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1026#define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1027 1028/* in rtlanal.c */ 1029/* Return the right cost to give to an operation 1030 to make the cost of the corresponding register-to-register instruction 1031 N times that of a fast register-to-register instruction. */ 1032#define COSTS_N_INSNS(N) ((N) * 4) 1033 1034/* Maximum cost of an rtl expression. This value has the special meaning 1035 not to use an rtx with this cost under any circumstances. */ 1036#define MAX_COST INT_MAX 1037 1038extern void init_rtlanal (void); 1039extern int rtx_cost (rtx, enum rtx_code); 1040extern int address_cost (rtx, enum machine_mode); 1041extern unsigned int subreg_lsb (rtx); 1042extern unsigned int subreg_lsb_1 (enum machine_mode, enum machine_mode, 1043 unsigned int); 1044extern unsigned int subreg_regno_offset (unsigned int, enum machine_mode, 1045 unsigned int, enum machine_mode); 1046extern bool subreg_offset_representable_p (unsigned int, enum machine_mode, 1047 unsigned int, enum machine_mode); 1048extern unsigned int subreg_regno (rtx); 1049extern unsigned HOST_WIDE_INT nonzero_bits (rtx, enum machine_mode); 1050extern unsigned int num_sign_bit_copies (rtx, enum machine_mode); 1051extern bool constant_pool_constant_p (rtx); 1052extern bool truncated_to_mode (enum machine_mode, rtx); 1053 1054 1055/* 1 if RTX is a subreg containing a reg that is already known to be 1056 sign- or zero-extended from the mode of the subreg to the mode of 1057 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 1058 extension. 1059 1060 When used as a LHS, is means that this extension must be done 1061 when assigning to SUBREG_REG. */ 1062 1063#define SUBREG_PROMOTED_VAR_P(RTX) \ 1064 (RTL_FLAG_CHECK1("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 1065 1066#define SUBREG_PROMOTED_UNSIGNED_SET(RTX, VAL) \ 1067do { \ 1068 rtx const _rtx = RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_SET", (RTX), SUBREG); \ 1069 if ((VAL) < 0) \ 1070 _rtx->volatil = 1; \ 1071 else { \ 1072 _rtx->volatil = 0; \ 1073 _rtx->unchanging = (VAL); \ 1074 } \ 1075} while (0) 1076#define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 1077 ((RTL_FLAG_CHECK1("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) \ 1078 ? -1 : (RTX)->unchanging) 1079 1080/* Access various components of an ASM_OPERANDS rtx. */ 1081 1082#define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 1083#define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 1084#define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 1085#define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 1086#define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 1087#define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 1088#define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 1089#define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 1090 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 1091#define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 1092 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 1093#define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 1094 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 1095#ifdef USE_MAPPED_LOCATION 1096#define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 5, ASM_OPERANDS) 1097#else 1098#define ASM_OPERANDS_SOURCE_FILE(RTX) XCSTR (RTX, 5, ASM_OPERANDS) 1099#define ASM_OPERANDS_SOURCE_LINE(RTX) XCINT (RTX, 6, ASM_OPERANDS) 1100#endif 1101 1102/* 1 if RTX is a mem that is statically allocated in read-only memory. */ 1103#define MEM_READONLY_P(RTX) \ 1104 (RTL_FLAG_CHECK1("MEM_READONLY_P", (RTX), MEM)->unchanging) 1105 1106/* 1 if RTX is a mem and we should keep the alias set for this mem 1107 unchanged when we access a component. Set to 1, or example, when we 1108 are already in a non-addressable component of an aggregate. */ 1109#define MEM_KEEP_ALIAS_SET_P(RTX) \ 1110 (RTL_FLAG_CHECK1("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 1111 1112/* 1 if RTX is a mem or asm_operand for a volatile reference. */ 1113#define MEM_VOLATILE_P(RTX) \ 1114 (RTL_FLAG_CHECK3("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 1115 ASM_INPUT)->volatil) 1116 1117/* 1 if RTX is a mem that refers to an aggregate, either to the 1118 aggregate itself or to a field of the aggregate. If zero, RTX may 1119 or may not be such a reference. */ 1120#define MEM_IN_STRUCT_P(RTX) \ 1121 (RTL_FLAG_CHECK1("MEM_IN_STRUCT_P", (RTX), MEM)->in_struct) 1122 1123/* 1 if RTX is a MEM that refers to a scalar. If zero, RTX may or may 1124 not refer to a scalar. */ 1125#define MEM_SCALAR_P(RTX) \ 1126 (RTL_FLAG_CHECK1("MEM_SCALAR_P", (RTX), MEM)->return_val) 1127 1128/* 1 if RTX is a mem that cannot trap. */ 1129#define MEM_NOTRAP_P(RTX) \ 1130 (RTL_FLAG_CHECK1("MEM_NOTRAP_P", (RTX), MEM)->call) 1131 1132/* If VAL is nonzero, set MEM_IN_STRUCT_P and clear MEM_SCALAR_P in 1133 RTX. Otherwise, vice versa. Use this macro only when you are 1134 *sure* that you know that the MEM is in a structure, or is a 1135 scalar. VAL is evaluated only once. */ 1136#define MEM_SET_IN_STRUCT_P(RTX, VAL) \ 1137do { \ 1138 if (VAL) \ 1139 { \ 1140 MEM_IN_STRUCT_P (RTX) = 1; \ 1141 MEM_SCALAR_P (RTX) = 0; \ 1142 } \ 1143 else \ 1144 { \ 1145 MEM_IN_STRUCT_P (RTX) = 0; \ 1146 MEM_SCALAR_P (RTX) = 1; \ 1147 } \ 1148} while (0) 1149 1150/* The memory attribute block. We provide access macros for each value 1151 in the block and provide defaults if none specified. */ 1152#define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 1153 1154/* The register attribute block. We provide access macros for each value 1155 in the block and provide defaults if none specified. */ 1156#define REG_ATTRS(RTX) X0REGATTR (RTX, 2) 1157 1158/* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 1159 set, and may alias anything. Otherwise, the MEM can only alias 1160 MEMs in a conflicting alias set. This value is set in a 1161 language-dependent manner in the front-end, and should not be 1162 altered in the back-end. These set numbers are tested with 1163 alias_sets_conflict_p. */ 1164#define MEM_ALIAS_SET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->alias) 1165 1166/* For a MEM rtx, the decl it is known to refer to, if it is known to 1167 refer to part of a DECL. It may also be a COMPONENT_REF. */ 1168#define MEM_EXPR(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->expr) 1169 1170/* For a MEM rtx, the offset from the start of MEM_EXPR, if known, as a 1171 RTX that is always a CONST_INT. */ 1172#define MEM_OFFSET(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->offset) 1173 1174/* For a MEM rtx, the size in bytes of the MEM, if known, as an RTX that 1175 is always a CONST_INT. */ 1176#define MEM_SIZE(RTX) \ 1177(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->size \ 1178 : GET_MODE (RTX) != BLKmode ? GEN_INT (GET_MODE_SIZE (GET_MODE (RTX))) \ 1179 : 0) 1180 1181/* For a MEM rtx, the alignment in bits. We can use the alignment of the 1182 mode as a default when STRICT_ALIGNMENT, but not if not. */ 1183#define MEM_ALIGN(RTX) \ 1184(MEM_ATTRS (RTX) != 0 ? MEM_ATTRS (RTX)->align \ 1185 : (STRICT_ALIGNMENT && GET_MODE (RTX) != BLKmode \ 1186 ? GET_MODE_ALIGNMENT (GET_MODE (RTX)) : BITS_PER_UNIT)) 1187 1188/* For a REG rtx, the decl it is known to refer to, if it is known to 1189 refer to part of a DECL. */ 1190#define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 1191 1192/* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 1193 HOST_WIDE_INT. */ 1194#define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 1195 1196/* Copy the attributes that apply to memory locations from RHS to LHS. */ 1197#define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 1198 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 1199 MEM_IN_STRUCT_P (LHS) = MEM_IN_STRUCT_P (RHS), \ 1200 MEM_SCALAR_P (LHS) = MEM_SCALAR_P (RHS), \ 1201 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 1202 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 1203 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 1204 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 1205 1206/* 1 if RTX is a label_ref for a nonlocal label. */ 1207/* Likewise in an expr_list for a reg_label note. */ 1208#define LABEL_REF_NONLOCAL_P(RTX) \ 1209 (RTL_FLAG_CHECK2("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF, \ 1210 REG_LABEL)->volatil) 1211 1212/* 1 if RTX is a code_label that should always be considered to be needed. */ 1213#define LABEL_PRESERVE_P(RTX) \ 1214 (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 1215 1216/* During sched, 1 if RTX is an insn that must be scheduled together 1217 with the preceding insn. */ 1218#define SCHED_GROUP_P(RTX) \ 1219 (RTL_FLAG_CHECK3("SCHED_GROUP_P", (RTX), INSN, JUMP_INSN, CALL_INSN \ 1220 )->in_struct) 1221 1222/* For a SET rtx, SET_DEST is the place that is set 1223 and SET_SRC is the value it is set to. */ 1224#define SET_DEST(RTX) XC2EXP(RTX, 0, SET, CLOBBER) 1225#define SET_SRC(RTX) XCEXP(RTX, 1, SET) 1226#define SET_IS_RETURN_P(RTX) \ 1227 (RTL_FLAG_CHECK1("SET_IS_RETURN_P", (RTX), SET)->jump) 1228 1229/* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 1230#define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 1231#define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 1232 1233/* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 1234 conditionally executing the code on, COND_EXEC_CODE is the code 1235 to execute if the condition is true. */ 1236#define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 1237#define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 1238 1239/* 1 if RTX is a symbol_ref that addresses this function's rtl 1240 constants pool. */ 1241#define CONSTANT_POOL_ADDRESS_P(RTX) \ 1242 (RTL_FLAG_CHECK1("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 1243 1244/* 1 if RTX is a symbol_ref that addresses a value in the file's 1245 tree constant pool. This information is private to varasm.c. */ 1246#define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 1247 (RTL_FLAG_CHECK1("TREE_CONSTANT_POOL_ADDRESS_P", \ 1248 (RTX), SYMBOL_REF)->frame_related) 1249 1250/* Used if RTX is a symbol_ref, for machine-specific purposes. */ 1251#define SYMBOL_REF_FLAG(RTX) \ 1252 (RTL_FLAG_CHECK1("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 1253 1254/* 1 if RTX is a symbol_ref that has been the library function in 1255 emit_library_call. */ 1256#define SYMBOL_REF_USED(RTX) \ 1257 (RTL_FLAG_CHECK1("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 1258 1259/* 1 if RTX is a symbol_ref for a weak symbol. */ 1260#define SYMBOL_REF_WEAK(RTX) \ 1261 (RTL_FLAG_CHECK1("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 1262 1263/* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 1264 SYMBOL_REF_CONSTANT. */ 1265#define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 2) 1266 1267/* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 1268 pool symbol. */ 1269#define SET_SYMBOL_REF_DECL(RTX, DECL) \ 1270 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 2) = (DECL)) 1271 1272/* The tree (decl or constant) associated with the symbol, or null. */ 1273#define SYMBOL_REF_DECL(RTX) \ 1274 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 2)) 1275 1276/* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 1277#define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 1278 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 2) = (C)) 1279 1280/* The rtx constant pool entry for a symbol, or null. */ 1281#define SYMBOL_REF_CONSTANT(RTX) \ 1282 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 2) : NULL) 1283 1284/* A set of flags on a symbol_ref that are, in some respects, redundant with 1285 information derivable from the tree decl associated with this symbol. 1286 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 1287 decl. In some cases this is a bug. But beyond that, it's nice to cache 1288 this information to avoid recomputing it. Finally, this allows space for 1289 the target to store more than one bit of information, as with 1290 SYMBOL_REF_FLAG. */ 1291#define SYMBOL_REF_FLAGS(RTX) X0INT ((RTX), 1) 1292 1293/* These flags are common enough to be defined for all targets. They 1294 are computed by the default version of targetm.encode_section_info. */ 1295 1296/* Set if this symbol is a function. */ 1297#define SYMBOL_FLAG_FUNCTION (1 << 0) 1298#define SYMBOL_REF_FUNCTION_P(RTX) \ 1299 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 1300/* Set if targetm.binds_local_p is true. */ 1301#define SYMBOL_FLAG_LOCAL (1 << 1) 1302#define SYMBOL_REF_LOCAL_P(RTX) \ 1303 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 1304/* Set if targetm.in_small_data_p is true. */ 1305#define SYMBOL_FLAG_SMALL (1 << 2) 1306#define SYMBOL_REF_SMALL_P(RTX) \ 1307 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 1308/* The three-bit field at [5:3] is true for TLS variables; use 1309 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 1310#define SYMBOL_FLAG_TLS_SHIFT 3 1311#define SYMBOL_REF_TLS_MODEL(RTX) \ 1312 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 1313/* Set if this symbol is not defined in this translation unit. */ 1314#define SYMBOL_FLAG_EXTERNAL (1 << 6) 1315#define SYMBOL_REF_EXTERNAL_P(RTX) \ 1316 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 1317/* Set if this symbol has a block_symbol structure associated with it. */ 1318#define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 1319#define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 1320 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 1321/* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 1322 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 1323#define SYMBOL_FLAG_ANCHOR (1 << 8) 1324#define SYMBOL_REF_ANCHOR_P(RTX) \ 1325 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 1326 1327/* Subsequent bits are available for the target to use. */ 1328#define SYMBOL_FLAG_MACH_DEP_SHIFT 9 1329#define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 1330 1331/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 1332 structure to which the symbol belongs, or NULL if it has not been 1333 assigned a block. */ 1334#define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 1335 1336/* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 1337 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 1338 RTX has not yet been assigned to a block, or it has not been given an 1339 offset within that block. */ 1340#define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 1341 1342/* Define a macro to look for REG_INC notes, 1343 but save time on machines where they never exist. */ 1344 1345#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) 1346#define FIND_REG_INC_NOTE(INSN, REG) \ 1347 ((REG) != NULL_RTX && REG_P ((REG)) \ 1348 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 1349 : find_reg_note ((INSN), REG_INC, (REG))) 1350#else 1351#define FIND_REG_INC_NOTE(INSN, REG) 0 1352#endif 1353 1354/* Indicate whether the machine has any sort of auto increment addressing. 1355 If not, we can avoid checking for REG_INC notes. */ 1356 1357#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT)) 1358#define AUTO_INC_DEC 1359#endif 1360 1361#ifndef HAVE_PRE_INCREMENT 1362#define HAVE_PRE_INCREMENT 0 1363#endif 1364 1365#ifndef HAVE_PRE_DECREMENT 1366#define HAVE_PRE_DECREMENT 0 1367#endif 1368 1369#ifndef HAVE_POST_INCREMENT 1370#define HAVE_POST_INCREMENT 0 1371#endif 1372 1373#ifndef HAVE_POST_DECREMENT 1374#define HAVE_POST_DECREMENT 0 1375#endif 1376 1377#ifndef HAVE_POST_MODIFY_DISP 1378#define HAVE_POST_MODIFY_DISP 0 1379#endif 1380 1381#ifndef HAVE_POST_MODIFY_REG 1382#define HAVE_POST_MODIFY_REG 0 1383#endif 1384 1385#ifndef HAVE_PRE_MODIFY_DISP 1386#define HAVE_PRE_MODIFY_DISP 0 1387#endif 1388 1389#ifndef HAVE_PRE_MODIFY_REG 1390#define HAVE_PRE_MODIFY_REG 0 1391#endif 1392 1393 1394/* Some architectures do not have complete pre/post increment/decrement 1395 instruction sets, or only move some modes efficiently. These macros 1396 allow us to tune autoincrement generation. */ 1397 1398#ifndef USE_LOAD_POST_INCREMENT 1399#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1400#endif 1401 1402#ifndef USE_LOAD_POST_DECREMENT 1403#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1404#endif 1405 1406#ifndef USE_LOAD_PRE_INCREMENT 1407#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1408#endif 1409 1410#ifndef USE_LOAD_PRE_DECREMENT 1411#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1412#endif 1413 1414#ifndef USE_STORE_POST_INCREMENT 1415#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 1416#endif 1417 1418#ifndef USE_STORE_POST_DECREMENT 1419#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 1420#endif 1421 1422#ifndef USE_STORE_PRE_INCREMENT 1423#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 1424#endif 1425 1426#ifndef USE_STORE_PRE_DECREMENT 1427#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 1428#endif 1429 1430/* Nonzero when we are generating CONCATs. */ 1431extern int generating_concat_p; 1432 1433/* Nonzero when we are expanding trees to RTL. */ 1434extern int currently_expanding_to_rtl; 1435 1436/* Generally useful functions. */ 1437 1438/* In expmed.c */ 1439extern int ceil_log2 (unsigned HOST_WIDE_INT); 1440 1441/* In builtins.c */ 1442extern rtx expand_builtin_expect_jump (tree, rtx, rtx); 1443 1444/* In explow.c */ 1445extern void set_stack_check_libfunc (rtx); 1446extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, enum machine_mode); 1447extern rtx plus_constant (rtx, HOST_WIDE_INT); 1448 1449/* In emit-rtl.c */ 1450extern rtvec gen_rtvec (int, ...); 1451extern rtx copy_insn_1 (rtx); 1452extern rtx copy_insn (rtx); 1453extern rtx gen_int_mode (HOST_WIDE_INT, enum machine_mode); 1454extern rtx emit_copy_of_insn_after (rtx, rtx); 1455extern void set_reg_attrs_from_mem (rtx, rtx); 1456extern void set_mem_attrs_from_reg (rtx, rtx); 1457extern void set_reg_attrs_for_parm (rtx, rtx); 1458extern int mem_expr_equal_p (tree, tree); 1459 1460/* In rtl.c */ 1461extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 1462#define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 1463 1464extern rtvec rtvec_alloc (int); 1465extern rtx copy_rtx (rtx); 1466extern void dump_rtx_statistics (void); 1467 1468/* In emit-rtl.c */ 1469extern rtx copy_rtx_if_shared (rtx); 1470 1471/* In rtl.c */ 1472extern unsigned int rtx_size (rtx); 1473extern rtx shallow_copy_rtx_stat (rtx MEM_STAT_DECL); 1474#define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 1475extern int rtx_equal_p (rtx, rtx); 1476 1477/* In emit-rtl.c */ 1478extern rtvec gen_rtvec_v (int, rtx *); 1479extern rtx gen_reg_rtx (enum machine_mode); 1480extern rtx gen_rtx_REG_offset (rtx, enum machine_mode, unsigned int, int); 1481extern rtx gen_label_rtx (void); 1482extern rtx gen_lowpart_common (enum machine_mode, rtx); 1483 1484/* In cse.c */ 1485extern rtx gen_lowpart_if_possible (enum machine_mode, rtx); 1486 1487/* In emit-rtl.c */ 1488extern rtx gen_highpart (enum machine_mode, rtx); 1489extern rtx gen_highpart_mode (enum machine_mode, enum machine_mode, rtx); 1490extern rtx operand_subword (rtx, unsigned int, int, enum machine_mode); 1491 1492/* In emit-rtl.c */ 1493extern rtx operand_subword_force (rtx, unsigned int, enum machine_mode); 1494extern int subreg_lowpart_p (rtx); 1495extern unsigned int subreg_lowpart_offset (enum machine_mode, 1496 enum machine_mode); 1497extern unsigned int subreg_highpart_offset (enum machine_mode, 1498 enum machine_mode); 1499extern rtx make_safe_from (rtx, rtx); 1500extern rtx convert_memory_address (enum machine_mode, rtx); 1501extern rtx get_insns (void); 1502extern const char *get_insn_name (int); 1503extern rtx get_last_insn (void); 1504extern rtx get_last_insn_anywhere (void); 1505extern rtx get_first_nonnote_insn (void); 1506extern rtx get_last_nonnote_insn (void); 1507extern void start_sequence (void); 1508extern void push_to_sequence (rtx); 1509extern void end_sequence (void); 1510extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 1511 enum machine_mode); 1512 1513/* In loop-iv.c */ 1514 1515extern rtx lowpart_subreg (enum machine_mode, rtx, enum machine_mode); 1516 1517/* In varasm.c */ 1518extern rtx force_const_mem (enum machine_mode, rtx); 1519 1520/* In varasm.c */ 1521 1522struct function; 1523extern rtx get_pool_constant (rtx); 1524extern rtx get_pool_constant_mark (rtx, bool *); 1525extern enum machine_mode get_pool_mode (rtx); 1526extern rtx simplify_subtraction (rtx); 1527 1528/* In function.c */ 1529extern rtx assign_stack_local (enum machine_mode, HOST_WIDE_INT, int); 1530extern rtx assign_stack_temp (enum machine_mode, HOST_WIDE_INT, int); 1531extern rtx assign_stack_temp_for_type (enum machine_mode, 1532 HOST_WIDE_INT, int, tree); 1533extern rtx assign_temp (tree, int, int, int); 1534 1535/* In emit-rtl.c */ 1536extern rtx emit_insn_before (rtx, rtx); 1537extern rtx emit_insn_before_noloc (rtx, rtx); 1538extern rtx emit_insn_before_setloc (rtx, rtx, int); 1539extern rtx emit_jump_insn_before (rtx, rtx); 1540extern rtx emit_jump_insn_before_noloc (rtx, rtx); 1541extern rtx emit_jump_insn_before_setloc (rtx, rtx, int); 1542extern rtx emit_call_insn_before (rtx, rtx); 1543extern rtx emit_call_insn_before_noloc (rtx, rtx); 1544extern rtx emit_call_insn_before_setloc (rtx, rtx, int); 1545extern rtx emit_barrier_before (rtx); 1546extern rtx emit_label_before (rtx, rtx); 1547extern rtx emit_note_before (int, rtx); 1548extern rtx emit_insn_after (rtx, rtx); 1549extern rtx emit_insn_after_noloc (rtx, rtx); 1550extern rtx emit_insn_after_setloc (rtx, rtx, int); 1551extern rtx emit_jump_insn_after (rtx, rtx); 1552extern rtx emit_jump_insn_after_noloc (rtx, rtx); 1553extern rtx emit_jump_insn_after_setloc (rtx, rtx, int); 1554extern rtx emit_call_insn_after (rtx, rtx); 1555extern rtx emit_call_insn_after_noloc (rtx, rtx); 1556extern rtx emit_call_insn_after_setloc (rtx, rtx, int); 1557extern rtx emit_barrier_after (rtx); 1558extern rtx emit_label_after (rtx, rtx); 1559extern rtx emit_note_after (int, rtx); 1560extern rtx emit_note_copy_after (rtx, rtx); 1561extern rtx emit_insn (rtx); 1562extern rtx emit_jump_insn (rtx); 1563extern rtx emit_call_insn (rtx); 1564extern rtx emit_label (rtx); 1565extern rtx emit_barrier (void); 1566extern rtx emit_note (int); 1567extern rtx emit_note_copy (rtx); 1568extern rtx emit_line_note (location_t); 1569extern rtx make_insn_raw (rtx); 1570extern rtx make_jump_insn_raw (rtx); 1571extern void add_function_usage_to (rtx, rtx); 1572extern rtx last_call_insn (void); 1573extern rtx previous_insn (rtx); 1574extern rtx next_insn (rtx); 1575extern rtx prev_nonnote_insn (rtx); 1576extern rtx next_nonnote_insn (rtx); 1577extern rtx prev_real_insn (rtx); 1578extern rtx next_real_insn (rtx); 1579extern rtx prev_active_insn (rtx); 1580extern rtx next_active_insn (rtx); 1581extern int active_insn_p (rtx); 1582extern rtx prev_label (rtx); 1583extern rtx next_label (rtx); 1584extern rtx skip_consecutive_labels (rtx); 1585extern rtx next_cc0_user (rtx); 1586extern rtx prev_cc0_setter (rtx); 1587 1588/* In cfglayout.c */ 1589extern int insn_line (rtx); 1590extern const char * insn_file (rtx); 1591extern int locator_line (int); 1592extern const char * locator_file (int); 1593extern int prologue_locator, epilogue_locator; 1594 1595/* In jump.c */ 1596extern enum rtx_code reverse_condition (enum rtx_code); 1597extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 1598extern enum rtx_code swap_condition (enum rtx_code); 1599extern enum rtx_code unsigned_condition (enum rtx_code); 1600extern enum rtx_code signed_condition (enum rtx_code); 1601extern void mark_jump_label (rtx, rtx, int); 1602extern unsigned int cleanup_barriers (void); 1603 1604/* In jump.c */ 1605extern bool squeeze_notes (rtx *, rtx *); 1606extern rtx delete_related_insns (rtx); 1607extern void delete_jump (rtx); 1608extern rtx get_label_before (rtx); 1609extern rtx get_label_after (rtx); 1610extern rtx follow_jumps (rtx); 1611 1612/* In recog.c */ 1613extern rtx *find_constant_term_loc (rtx *); 1614 1615/* In emit-rtl.c */ 1616extern rtx try_split (rtx, rtx, int); 1617extern int split_branch_probability; 1618 1619/* In unknown file */ 1620extern rtx split_insns (rtx, rtx); 1621 1622/* In simplify-rtx.c */ 1623extern rtx simplify_const_unary_operation (enum rtx_code, enum machine_mode, 1624 rtx, enum machine_mode); 1625extern rtx simplify_unary_operation (enum rtx_code, enum machine_mode, rtx, 1626 enum machine_mode); 1627extern rtx simplify_const_binary_operation (enum rtx_code, enum machine_mode, 1628 rtx, rtx); 1629extern rtx simplify_binary_operation (enum rtx_code, enum machine_mode, rtx, 1630 rtx); 1631extern rtx simplify_ternary_operation (enum rtx_code, enum machine_mode, 1632 enum machine_mode, rtx, rtx, rtx); 1633extern rtx simplify_const_relational_operation (enum rtx_code, 1634 enum machine_mode, rtx, rtx); 1635extern rtx simplify_relational_operation (enum rtx_code, enum machine_mode, 1636 enum machine_mode, rtx, rtx); 1637extern rtx simplify_gen_binary (enum rtx_code, enum machine_mode, rtx, rtx); 1638extern rtx simplify_gen_unary (enum rtx_code, enum machine_mode, rtx, 1639 enum machine_mode); 1640extern rtx simplify_gen_ternary (enum rtx_code, enum machine_mode, 1641 enum machine_mode, rtx, rtx, rtx); 1642extern rtx simplify_gen_relational (enum rtx_code, enum machine_mode, 1643 enum machine_mode, rtx, rtx); 1644extern rtx simplify_subreg (enum machine_mode, rtx, enum machine_mode, 1645 unsigned int); 1646extern rtx simplify_gen_subreg (enum machine_mode, rtx, enum machine_mode, 1647 unsigned int); 1648extern rtx simplify_replace_rtx (rtx, rtx, rtx); 1649extern rtx simplify_rtx (rtx); 1650extern rtx avoid_constant_pool_reference (rtx); 1651extern bool constant_pool_reference_p (rtx x); 1652extern bool mode_signbit_p (enum machine_mode, rtx); 1653 1654/* In regclass.c */ 1655extern enum machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 1656 bool); 1657 1658/* In emit-rtl.c */ 1659extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 1660 1661/* Functions in rtlanal.c */ 1662 1663/* Single set is implemented as macro for performance reasons. */ 1664#define single_set(I) (INSN_P (I) \ 1665 ? (GET_CODE (PATTERN (I)) == SET \ 1666 ? PATTERN (I) : single_set_1 (I)) \ 1667 : NULL_RTX) 1668#define single_set_1(I) single_set_2 (I, PATTERN (I)) 1669 1670/* Structure used for passing data to REPLACE_LABEL. */ 1671typedef struct replace_label_data 1672{ 1673 rtx r1; 1674 rtx r2; 1675 bool update_label_nuses; 1676} replace_label_data; 1677 1678extern int rtx_addr_can_trap_p (rtx); 1679extern bool nonzero_address_p (rtx); 1680extern int rtx_unstable_p (rtx); 1681extern int rtx_varies_p (rtx, int); 1682extern int rtx_addr_varies_p (rtx, int); 1683extern HOST_WIDE_INT get_integer_term (rtx); 1684extern rtx get_related_value (rtx); 1685extern int reg_mentioned_p (rtx, rtx); 1686extern int count_occurrences (rtx, rtx, int); 1687extern int reg_referenced_p (rtx, rtx); 1688extern int reg_used_between_p (rtx, rtx, rtx); 1689extern int reg_set_between_p (rtx, rtx, rtx); 1690extern int commutative_operand_precedence (rtx); 1691extern int swap_commutative_operands_p (rtx, rtx); 1692extern int modified_between_p (rtx, rtx, rtx); 1693extern int no_labels_between_p (rtx, rtx); 1694extern int modified_in_p (rtx, rtx); 1695extern int reg_set_p (rtx, rtx); 1696extern rtx single_set_2 (rtx, rtx); 1697extern int multiple_sets (rtx); 1698extern int set_noop_p (rtx); 1699extern int noop_move_p (rtx); 1700extern rtx find_last_value (rtx, rtx *, rtx, int); 1701extern int refers_to_regno_p (unsigned int, unsigned int, rtx, rtx *); 1702extern int reg_overlap_mentioned_p (rtx, rtx); 1703extern rtx set_of (rtx, rtx); 1704extern void note_stores (rtx, void (*) (rtx, rtx, void *), void *); 1705extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 1706extern int dead_or_set_p (rtx, rtx); 1707extern int dead_or_set_regno_p (rtx, unsigned int); 1708extern rtx find_reg_note (rtx, enum reg_note, rtx); 1709extern rtx find_regno_note (rtx, enum reg_note, unsigned int); 1710extern rtx find_reg_equal_equiv_note (rtx); 1711extern int find_reg_fusage (rtx, enum rtx_code, rtx); 1712extern int find_regno_fusage (rtx, enum rtx_code, unsigned int); 1713extern int pure_call_p (rtx); 1714extern void remove_note (rtx, rtx); 1715extern int side_effects_p (rtx); 1716extern int volatile_refs_p (rtx); 1717extern int volatile_insn_p (rtx); 1718extern int may_trap_p (rtx); 1719extern int may_trap_after_code_motion_p (rtx); 1720extern int may_trap_or_fault_p (rtx); 1721extern int inequality_comparisons_p (rtx); 1722extern rtx replace_rtx (rtx, rtx, rtx); 1723extern int replace_label (rtx *, void *); 1724extern int rtx_referenced_p (rtx, rtx); 1725extern bool tablejump_p (rtx, rtx *, rtx *); 1726extern int computed_jump_p (rtx); 1727typedef int (*rtx_function) (rtx *, void *); 1728extern int for_each_rtx (rtx *, rtx_function, void *); 1729extern rtx regno_use_in (unsigned int, rtx); 1730extern int auto_inc_p (rtx); 1731extern int in_expr_list_p (rtx, rtx); 1732extern void remove_node_from_expr_list (rtx, rtx *); 1733extern int loc_mentioned_in_p (rtx *, rtx); 1734extern rtx find_first_parameter_load (rtx, rtx); 1735extern bool keep_with_call_p (rtx); 1736extern bool label_is_jump_target_p (rtx, rtx); 1737extern int insn_rtx_cost (rtx); 1738 1739/* Given an insn and condition, return a canonical description of 1740 the test being made. */ 1741extern rtx canonicalize_condition (rtx, rtx, int, rtx *, rtx, int, int); 1742 1743/* Given a JUMP_INSN, return a canonical description of the test 1744 being made. */ 1745extern rtx get_condition (rtx, rtx *, int, int); 1746 1747 1748/* flow.c */ 1749 1750extern rtx find_use_as_address (rtx, rtx, HOST_WIDE_INT); 1751 1752/* lists.c */ 1753 1754void free_EXPR_LIST_list (rtx *); 1755void free_INSN_LIST_list (rtx *); 1756void free_EXPR_LIST_node (rtx); 1757void free_INSN_LIST_node (rtx); 1758rtx alloc_INSN_LIST (rtx, rtx); 1759rtx alloc_EXPR_LIST (int, rtx, rtx); 1760void free_DEPS_LIST_list (rtx *); 1761rtx alloc_DEPS_LIST (rtx, rtx, int); 1762void remove_free_DEPS_LIST_elem (rtx, rtx *); 1763void remove_free_INSN_LIST_elem (rtx, rtx *); 1764rtx remove_list_elem (rtx, rtx *); 1765rtx copy_DEPS_LIST_list (rtx); 1766 1767/* regclass.c */ 1768 1769/* Maximum number of parallel sets and clobbers in any insn in this fn. 1770 Always at least 3, since the combiner could put that many together 1771 and we want this to remain correct for all the remaining passes. */ 1772 1773extern int max_parallel; 1774 1775/* Free up register info memory. */ 1776extern void free_reg_info (void); 1777 1778/* recog.c */ 1779extern int asm_noperands (rtx); 1780extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 1781 enum machine_mode *); 1782 1783extern enum reg_class reg_preferred_class (int); 1784extern enum reg_class reg_alternate_class (int); 1785 1786extern void split_all_insns (int); 1787extern unsigned int split_all_insns_noflow (void); 1788 1789#define MAX_SAVED_CONST_INT 64 1790extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 1791 1792#define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 1793#define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 1794#define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 1795#define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 1796extern GTY(()) rtx const_true_rtx; 1797 1798extern GTY(()) rtx const_tiny_rtx[3][(int) MAX_MACHINE_MODE]; 1799 1800/* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 1801 same as VOIDmode. */ 1802 1803#define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 1804 1805/* Likewise, for the constants 1 and 2. */ 1806 1807#define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 1808#define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 1809 1810/* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 1811 is used to represent the frame pointer. This is because the 1812 hard frame pointer and the automatic variables are separated by an amount 1813 that cannot be determined until after register allocation. We can assume 1814 that in this case ELIMINABLE_REGS will be defined, one action of which 1815 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 1816#ifndef HARD_FRAME_POINTER_REGNUM 1817#define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 1818#endif 1819 1820/* Index labels for global_rtl. */ 1821enum global_rtl_index 1822{ 1823 GR_PC, 1824 GR_CC0, 1825 GR_STACK_POINTER, 1826 GR_FRAME_POINTER, 1827/* For register elimination to work properly these hard_frame_pointer_rtx, 1828 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 1829 the same register. */ 1830#if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1831 GR_ARG_POINTER = GR_FRAME_POINTER, 1832#endif 1833#if HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM 1834 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 1835#else 1836 GR_HARD_FRAME_POINTER, 1837#endif 1838#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 1839#if HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 1840 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 1841#else 1842 GR_ARG_POINTER, 1843#endif 1844#endif 1845 GR_VIRTUAL_INCOMING_ARGS, 1846 GR_VIRTUAL_STACK_ARGS, 1847 GR_VIRTUAL_STACK_DYNAMIC, 1848 GR_VIRTUAL_OUTGOING_ARGS, 1849 GR_VIRTUAL_CFA, 1850 1851 GR_MAX 1852}; 1853 1854/* Pointers to standard pieces of rtx are stored here. */ 1855extern GTY(()) rtx global_rtl[GR_MAX]; 1856 1857/* Standard pieces of rtx, to be substituted directly into things. */ 1858#define pc_rtx (global_rtl[GR_PC]) 1859#define cc0_rtx (global_rtl[GR_CC0]) 1860 1861/* All references to certain hard regs, except those created 1862 by allocating pseudo regs into them (when that's possible), 1863 go through these unique rtx objects. */ 1864#define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 1865#define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 1866#define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 1867#define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 1868 1869extern GTY(()) rtx pic_offset_table_rtx; 1870extern GTY(()) rtx static_chain_rtx; 1871extern GTY(()) rtx static_chain_incoming_rtx; 1872extern GTY(()) rtx return_address_pointer_rtx; 1873 1874/* Include the RTL generation functions. */ 1875 1876#ifndef GENERATOR_FILE 1877#include "genrtl.h" 1878#ifndef USE_MAPPED_LOCATION 1879#undef gen_rtx_ASM_OPERANDS 1880#define gen_rtx_ASM_OPERANDS(MODE, ARG0, ARG1, ARG2, ARG3, ARG4, LOC) \ 1881 gen_rtx_fmt_ssiEEsi (ASM_OPERANDS, (MODE), (ARG0), (ARG1), (ARG2), (ARG3), (ARG4), (LOC).file, (LOC).line) 1882#endif 1883#endif 1884 1885/* There are some RTL codes that require special attention; the 1886 generation functions included above do the raw handling. If you 1887 add to this list, modify special_rtx in gengenrtl.c as well. */ 1888 1889extern rtx gen_rtx_CONST_INT (enum machine_mode, HOST_WIDE_INT); 1890extern rtx gen_rtx_CONST_VECTOR (enum machine_mode, rtvec); 1891extern rtx gen_raw_REG (enum machine_mode, int); 1892extern rtx gen_rtx_REG (enum machine_mode, unsigned); 1893extern rtx gen_rtx_SUBREG (enum machine_mode, rtx, int); 1894extern rtx gen_rtx_MEM (enum machine_mode, rtx); 1895 1896#define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 1897 1898/* Virtual registers are used during RTL generation to refer to locations into 1899 the stack frame when the actual location isn't known until RTL generation 1900 is complete. The routine instantiate_virtual_regs replaces these with 1901 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 1902 a constant. */ 1903 1904#define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 1905 1906/* This points to the first word of the incoming arguments passed on the stack, 1907 either by the caller or by the callee when pretending it was passed by the 1908 caller. */ 1909 1910#define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 1911 1912#define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 1913 1914/* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 1915 variable on the stack. Otherwise, it points to the first variable on 1916 the stack. */ 1917 1918#define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 1919 1920#define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 1921 1922/* This points to the location of dynamically-allocated memory on the stack 1923 immediately after the stack pointer has been adjusted by the amount 1924 desired. */ 1925 1926#define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 1927 1928#define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 1929 1930/* This points to the location in the stack at which outgoing arguments should 1931 be written when the stack is pre-pushed (arguments pushed using push 1932 insns always use sp). */ 1933 1934#define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 1935 1936#define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 1937 1938/* This points to the Canonical Frame Address of the function. This 1939 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 1940 but is calculated relative to the arg pointer for simplicity; the 1941 frame pointer nor stack pointer are necessarily fixed relative to 1942 the CFA until after reload. */ 1943 1944#define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 1945 1946#define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 1947 1948#define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 1949 1950/* Nonzero if REGNUM is a pointer into the stack frame. */ 1951#define REGNO_PTR_FRAME_P(REGNUM) \ 1952 ((REGNUM) == STACK_POINTER_REGNUM \ 1953 || (REGNUM) == FRAME_POINTER_REGNUM \ 1954 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 1955 || (REGNUM) == ARG_POINTER_REGNUM \ 1956 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 1957 && (REGNUM) <= LAST_VIRTUAL_REGISTER)) 1958 1959/* REGNUM never really appearing in the INSN stream. */ 1960#define INVALID_REGNUM (~(unsigned int) 0) 1961 1962extern rtx output_constant_def (tree, int); 1963extern rtx lookup_constant_def (tree); 1964 1965/* Nonzero after the second flow pass has completed. 1966 Set to 1 or 0 by toplev.c */ 1967extern int flow2_completed; 1968 1969/* Nonzero after end of reload pass. 1970 Set to 1 or 0 by reload1.c. */ 1971 1972extern int reload_completed; 1973 1974/* Nonzero after thread_prologue_and_epilogue_insns has run. */ 1975extern int epilogue_completed; 1976 1977/* Set to 1 while reload_as_needed is operating. 1978 Required by some machines to handle any generated moves differently. */ 1979 1980extern int reload_in_progress; 1981 1982#ifdef STACK_REGS 1983/* Nonzero after end of regstack pass. 1984 Set to 1 or 0 by reg-stack.c. */ 1985extern int regstack_completed; 1986#endif 1987 1988/* If this is nonzero, we do not bother generating VOLATILE 1989 around volatile memory references, and we are willing to 1990 output indirect addresses. If cse is to follow, we reject 1991 indirect addresses so a useful potential cse is generated; 1992 if it is used only once, instruction combination will produce 1993 the same indirect address eventually. */ 1994extern int cse_not_expected; 1995 1996/* Set to nonzero before life analysis to indicate that it is unsafe to 1997 generate any new pseudo registers. */ 1998extern int no_new_pseudos; 1999 2000/* Translates rtx code to tree code, for those codes needed by 2001 REAL_ARITHMETIC. The function returns an int because the caller may not 2002 know what `enum tree_code' means. */ 2003 2004extern int rtx_to_tree_code (enum rtx_code); 2005 2006/* In cse.c */ 2007extern int delete_trivially_dead_insns (rtx, int); 2008extern int cse_main (rtx, int); 2009extern int exp_equiv_p (rtx, rtx, int, bool); 2010extern unsigned hash_rtx (rtx x, enum machine_mode, int *, int *, bool); 2011 2012/* In jump.c */ 2013extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 2014extern int condjump_p (rtx); 2015extern int any_condjump_p (rtx); 2016extern int any_uncondjump_p (rtx); 2017extern rtx pc_set (rtx); 2018extern rtx condjump_label (rtx); 2019extern int simplejump_p (rtx); 2020extern int returnjump_p (rtx); 2021extern int onlyjump_p (rtx); 2022extern int only_sets_cc0_p (rtx); 2023extern int sets_cc0_p (rtx); 2024extern int invert_jump_1 (rtx, rtx); 2025extern int invert_jump (rtx, rtx, int); 2026extern int rtx_renumbered_equal_p (rtx, rtx); 2027extern int true_regnum (rtx); 2028extern unsigned int reg_or_subregno (rtx); 2029extern int redirect_jump_1 (rtx, rtx); 2030extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 2031extern int redirect_jump (rtx, rtx, int); 2032extern void rebuild_jump_labels (rtx); 2033extern rtx reversed_comparison (rtx, enum machine_mode); 2034extern enum rtx_code reversed_comparison_code (rtx, rtx); 2035extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, 2036 rtx, rtx, rtx); 2037extern void delete_for_peephole (rtx, rtx); 2038extern int condjump_in_parallel_p (rtx); 2039extern unsigned int purge_line_number_notes (void); 2040 2041/* In emit-rtl.c. */ 2042extern int max_reg_num (void); 2043extern int max_label_num (void); 2044extern int get_first_label_num (void); 2045extern void maybe_set_first_label_num (rtx); 2046extern void delete_insns_since (rtx); 2047extern void mark_reg_pointer (rtx, int); 2048extern void mark_user_reg (rtx); 2049extern void reset_used_flags (rtx); 2050extern void set_used_flags (rtx); 2051extern void reorder_insns (rtx, rtx, rtx); 2052extern void reorder_insns_nobb (rtx, rtx, rtx); 2053extern int get_max_uid (void); 2054extern int in_sequence_p (void); 2055extern void force_next_line_note (void); 2056extern void init_emit (void); 2057extern void init_emit_once (int); 2058extern void push_topmost_sequence (void); 2059extern void pop_topmost_sequence (void); 2060extern void set_new_first_and_last_insn (rtx, rtx); 2061extern unsigned int unshare_all_rtl (void); 2062extern void unshare_all_rtl_again (rtx); 2063extern void unshare_all_rtl_in_chain (rtx); 2064extern void verify_rtl_sharing (void); 2065extern void set_first_insn (rtx); 2066extern void set_last_insn (rtx); 2067extern void link_cc0_insns (rtx); 2068extern void add_insn (rtx); 2069extern void add_insn_before (rtx, rtx); 2070extern void add_insn_after (rtx, rtx); 2071extern void remove_insn (rtx); 2072extern void emit_insn_after_with_line_notes (rtx, rtx, rtx); 2073extern rtx emit (rtx); 2074extern void renumber_insns (void); 2075extern rtx delete_insn (rtx); 2076extern rtx entry_of_function (void); 2077extern void emit_insn_at_entry (rtx); 2078extern void delete_insn_chain (rtx, rtx); 2079extern rtx unlink_insn_chain (rtx, rtx); 2080extern rtx delete_insn_and_edges (rtx); 2081extern void delete_insn_chain_and_edges (rtx, rtx); 2082extern rtx gen_lowpart_SUBREG (enum machine_mode, rtx); 2083extern rtx gen_const_mem (enum machine_mode, rtx); 2084extern rtx gen_frame_mem (enum machine_mode, rtx); 2085extern rtx gen_tmp_stack_mem (enum machine_mode, rtx); 2086extern bool validate_subreg (enum machine_mode, enum machine_mode, 2087 rtx, unsigned int); 2088 2089/* In combine.c */ 2090extern unsigned int extended_count (rtx, enum machine_mode, int); 2091extern rtx remove_death (unsigned int, rtx); 2092extern void dump_combine_stats (FILE *); 2093extern void dump_combine_total_stats (FILE *); 2094 2095/* In sched-vis.c. */ 2096extern void print_rtl_slim_with_bb (FILE *, rtx, int); 2097extern void dump_insn_slim (FILE *f, rtx x); 2098extern void debug_insn_slim (rtx x); 2099 2100/* In sched-rgn.c. */ 2101extern void schedule_insns (void); 2102 2103/* In sched-ebb.c. */ 2104extern void schedule_ebbs (void); 2105 2106/* In haifa-sched.c. */ 2107extern void fix_sched_param (const char *, const char *); 2108 2109/* In print-rtl.c */ 2110extern const char *print_rtx_head; 2111extern void debug_rtx (rtx); 2112extern void debug_rtx_list (rtx, int); 2113extern void debug_rtx_range (rtx, rtx); 2114extern rtx debug_rtx_find (rtx, int); 2115extern void print_mem_expr (FILE *, tree); 2116extern void print_rtl (FILE *, rtx); 2117extern void print_simple_rtl (FILE *, rtx); 2118extern int print_rtl_single (FILE *, rtx); 2119extern void print_inline_rtx (FILE *, rtx, int); 2120 2121/* In bt-load.c */ 2122extern void branch_target_load_optimize (bool); 2123 2124/* In function.c */ 2125extern void reposition_prologue_and_epilogue_notes (rtx); 2126extern void thread_prologue_and_epilogue_insns (rtx); 2127extern int prologue_epilogue_contains (rtx); 2128extern int sibcall_epilogue_contains (rtx); 2129extern void mark_temp_addr_taken (rtx); 2130extern void update_temp_slot_address (rtx, rtx); 2131 2132/* In stmt.c */ 2133extern void expand_null_return (void); 2134extern void expand_naked_return (void); 2135extern void emit_jump (rtx); 2136 2137/* In expr.c */ 2138extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 2139 unsigned int, int); 2140 2141/* In flow.c */ 2142extern void delete_dead_jumptables (void); 2143extern void print_rtl_with_bb (FILE *, rtx); 2144extern void dump_flow_info (FILE *, int); 2145 2146/* In expmed.c */ 2147extern void init_expmed (void); 2148extern void expand_inc (rtx, rtx); 2149extern void expand_dec (rtx, rtx); 2150 2151/* In gcse.c */ 2152extern bool can_copy_p (enum machine_mode); 2153extern rtx fis_get_condition (rtx); 2154 2155/* In global.c */ 2156extern void mark_elimination (int, int); 2157extern void dump_global_regs (FILE *); 2158#ifdef HARD_CONST 2159/* Yes, this ifdef is silly, but HARD_REG_SET is not always defined. */ 2160extern void retry_global_alloc (int, HARD_REG_SET); 2161#endif 2162extern void build_insn_chain (rtx); 2163 2164/* In regclass.c */ 2165extern int reg_classes_intersect_p (enum reg_class, enum reg_class); 2166extern int reg_class_subset_p (enum reg_class, enum reg_class); 2167extern void globalize_reg (int); 2168extern void init_reg_modes_once (void); 2169extern void init_regs (void); 2170extern void init_fake_stack_mems (void); 2171extern void init_reg_sets (void); 2172extern void regclass_init (void); 2173extern void regclass (rtx, int); 2174extern void reg_scan (rtx, unsigned int); 2175extern void fix_register (const char *, int, int); 2176extern void init_subregs_of_mode (void); 2177extern void record_subregs_of_mode (rtx); 2178#ifdef HARD_CONST 2179extern void cannot_change_mode_set_regs (HARD_REG_SET *, 2180 enum machine_mode, unsigned int); 2181#endif 2182extern bool invalid_mode_change_p (unsigned int, enum reg_class, 2183 enum machine_mode); 2184 2185/* In reorg.c */ 2186extern void dbr_schedule (rtx); 2187 2188/* In local-alloc.c */ 2189extern void dump_local_alloc (FILE *); 2190 2191/* In reload1.c */ 2192extern int function_invariant_p (rtx); 2193 2194/* In calls.c */ 2195enum libcall_type 2196{ 2197 LCT_NORMAL = 0, 2198 LCT_CONST = 1, 2199 LCT_PURE = 2, 2200 LCT_CONST_MAKE_BLOCK = 3, 2201 LCT_PURE_MAKE_BLOCK = 4, 2202 LCT_NORETURN = 5, 2203 LCT_THROW = 6, 2204 LCT_RETURNS_TWICE = 7 2205}; 2206 2207extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int, 2208 ...); 2209extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 2210 enum machine_mode, int, ...); 2211 2212/* In varasm.c */ 2213extern void init_varasm_once (void); 2214extern enum tls_model decl_default_tls_model (tree); 2215 2216/* In rtl.c */ 2217extern void traverse_md_constants (int (*) (void **, void *), void *); 2218struct md_constant { char *name, *value; }; 2219 2220/* In read-rtl.c */ 2221extern int read_skip_spaces (FILE *); 2222extern bool read_rtx (FILE *, rtx *, int *); 2223extern void copy_rtx_ptr_loc (const void *, const void *); 2224extern void print_rtx_ptr_loc (const void *); 2225extern const char *join_c_conditions (const char *, const char *); 2226extern void print_c_condition (const char *); 2227extern const char *read_rtx_filename; 2228extern int read_rtx_lineno; 2229 2230/* In alias.c */ 2231extern void clear_reg_alias_info (rtx); 2232extern rtx canon_rtx (rtx); 2233extern int true_dependence (rtx, enum machine_mode, rtx, int (*)(rtx, int)); 2234extern rtx get_addr (rtx); 2235extern int canon_true_dependence (rtx, enum machine_mode, rtx, rtx, 2236 int (*)(rtx, int)); 2237extern int read_dependence (rtx, rtx); 2238extern int anti_dependence (rtx, rtx); 2239extern int output_dependence (rtx, rtx); 2240extern void init_alias_once (void); 2241extern void init_alias_analysis (void); 2242extern void end_alias_analysis (void); 2243extern bool memory_modified_in_insn_p (rtx, rtx); 2244extern rtx find_base_term (rtx); 2245extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int); 2246extern rtx get_reg_known_value (unsigned int); 2247extern bool get_reg_known_equiv_p (unsigned int); 2248 2249#ifdef STACK_REGS 2250extern int stack_regs_mentioned (rtx insn); 2251#endif 2252 2253/* In toplev.c */ 2254extern GTY(()) rtx stack_limit_rtx; 2255 2256/* In predict.c */ 2257extern void invert_br_probabilities (rtx); 2258extern bool expensive_function_p (int); 2259/* In tracer.c */ 2260extern void tracer (unsigned int); 2261 2262/* In var-tracking.c */ 2263extern unsigned int variable_tracking_main (void); 2264 2265/* In stor-layout.c. */ 2266extern void get_mode_bounds (enum machine_mode, int, enum machine_mode, 2267 rtx *, rtx *); 2268 2269/* In loop-unswitch.c */ 2270extern rtx reversed_condition (rtx); 2271extern rtx compare_and_jump_seq (rtx, rtx, enum rtx_code, rtx, int, rtx); 2272 2273/* In loop-iv.c */ 2274extern rtx canon_condition (rtx); 2275extern void simplify_using_condition (rtx, rtx *, struct bitmap_head_def *); 2276 2277struct rtl_hooks 2278{ 2279 rtx (*gen_lowpart) (enum machine_mode, rtx); 2280 rtx (*gen_lowpart_no_emit) (enum machine_mode, rtx); 2281 rtx (*reg_nonzero_bits) (rtx, enum machine_mode, rtx, enum machine_mode, 2282 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 2283 rtx (*reg_num_sign_bit_copies) (rtx, enum machine_mode, rtx, enum machine_mode, 2284 unsigned int, unsigned int *); 2285 bool (*reg_truncated_to_mode) (enum machine_mode, rtx); 2286 2287 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 2288}; 2289 2290/* Each pass can provide its own. */ 2291extern struct rtl_hooks rtl_hooks; 2292 2293/* ... but then it has to restore these. */ 2294extern const struct rtl_hooks general_rtl_hooks; 2295 2296/* Keep this for the nonce. */ 2297#define gen_lowpart rtl_hooks.gen_lowpart 2298 2299#endif /* ! GCC_RTL_H */ 2300