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