1 /* Register Transfer Language (RTL) definitions for GCC 2 Copyright (C) 1987-2015 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_RTL_H 21 #define GCC_RTL_H 22 23 #include "statistics.h" 24 #include "machmode.h" 25 #include "input.h" 26 #include "real.h" 27 #include "vec.h" 28 #include "fixed-value.h" 29 #include "alias.h" 30 #include "hashtab.h" 31 #include "wide-int.h" 32 #include "flags.h" 33 #include "is-a.h" 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 42 enum 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 /* The cast here, saves many elsewhere. */ 53 #define NUM_RTX_CODE ((int) LAST_AND_UNUSED_RTX_CODE) 54 55 /* Similar, but since generator files get more entries... */ 56 #ifdef GENERATOR_FILE 57 # define NON_GENERATOR_NUM_RTX_CODE ((int) MATCH_OPERAND) 58 #endif 59 60 /* Register Transfer Language EXPRESSIONS CODE CLASSES */ 61 62 enum rtx_class { 63 /* We check bit 0-1 of some rtx class codes in the predicates below. */ 64 65 /* Bit 0 = comparison if 0, arithmetic is 1 66 Bit 1 = 1 if commutative. */ 67 RTX_COMPARE, /* 0 */ 68 RTX_COMM_COMPARE, 69 RTX_BIN_ARITH, 70 RTX_COMM_ARITH, 71 72 /* Must follow the four preceding values. */ 73 RTX_UNARY, /* 4 */ 74 75 RTX_EXTRA, 76 RTX_MATCH, 77 RTX_INSN, 78 79 /* Bit 0 = 1 if constant. */ 80 RTX_OBJ, /* 8 */ 81 RTX_CONST_OBJ, 82 83 RTX_TERNARY, 84 RTX_BITFIELD_OPS, 85 RTX_AUTOINC 86 }; 87 88 #define RTX_OBJ_MASK (~1) 89 #define RTX_OBJ_RESULT (RTX_OBJ & RTX_OBJ_MASK) 90 #define RTX_COMPARE_MASK (~1) 91 #define RTX_COMPARE_RESULT (RTX_COMPARE & RTX_COMPARE_MASK) 92 #define RTX_ARITHMETIC_MASK (~1) 93 #define RTX_ARITHMETIC_RESULT (RTX_COMM_ARITH & RTX_ARITHMETIC_MASK) 94 #define RTX_BINARY_MASK (~3) 95 #define RTX_BINARY_RESULT (RTX_COMPARE & RTX_BINARY_MASK) 96 #define RTX_COMMUTATIVE_MASK (~2) 97 #define RTX_COMMUTATIVE_RESULT (RTX_COMM_COMPARE & RTX_COMMUTATIVE_MASK) 98 #define RTX_NON_COMMUTATIVE_RESULT (RTX_COMPARE & RTX_COMMUTATIVE_MASK) 99 100 extern const unsigned char rtx_length[NUM_RTX_CODE]; 101 #define GET_RTX_LENGTH(CODE) (rtx_length[(int) (CODE)]) 102 103 extern const char * const rtx_name[NUM_RTX_CODE]; 104 #define GET_RTX_NAME(CODE) (rtx_name[(int) (CODE)]) 105 106 extern const char * const rtx_format[NUM_RTX_CODE]; 107 #define GET_RTX_FORMAT(CODE) (rtx_format[(int) (CODE)]) 108 109 extern const enum rtx_class rtx_class[NUM_RTX_CODE]; 110 #define GET_RTX_CLASS(CODE) (rtx_class[(int) (CODE)]) 111 112 /* True if CODE is part of the insn chain (i.e. has INSN_UID, PREV_INSN 113 and NEXT_INSN fields). */ 114 #define INSN_CHAIN_CODE_P(CODE) IN_RANGE (CODE, DEBUG_INSN, NOTE) 115 116 extern const unsigned char rtx_code_size[NUM_RTX_CODE]; 117 extern const unsigned char rtx_next[NUM_RTX_CODE]; 118 119 /* The flags and bitfields of an ADDR_DIFF_VEC. BASE is the base label 120 relative to which the offsets are calculated, as explained in rtl.def. */ 121 struct addr_diff_vec_flags 122 { 123 /* Set at the start of shorten_branches - ONLY WHEN OPTIMIZING - : */ 124 unsigned min_align: 8; 125 /* Flags: */ 126 unsigned base_after_vec: 1; /* BASE is after the ADDR_DIFF_VEC. */ 127 unsigned min_after_vec: 1; /* minimum address target label is 128 after the ADDR_DIFF_VEC. */ 129 unsigned max_after_vec: 1; /* maximum address target label is 130 after the ADDR_DIFF_VEC. */ 131 unsigned min_after_base: 1; /* minimum address target label is 132 after BASE. */ 133 unsigned max_after_base: 1; /* maximum address target label is 134 after BASE. */ 135 /* Set by the actual branch shortening process - ONLY WHEN OPTIMIZING - : */ 136 unsigned offset_unsigned: 1; /* offsets have to be treated as unsigned. */ 137 unsigned : 2; 138 unsigned scale : 8; 139 }; 140 141 /* Structure used to describe the attributes of a MEM. These are hashed 142 so MEMs that the same attributes share a data structure. This means 143 they cannot be modified in place. */ 144 struct GTY(()) mem_attrs 145 { 146 /* The expression that the MEM accesses, or null if not known. 147 This expression might be larger than the memory reference itself. 148 (In other words, the MEM might access only part of the object.) */ 149 tree expr; 150 151 /* The offset of the memory reference from the start of EXPR. 152 Only valid if OFFSET_KNOWN_P. */ 153 HOST_WIDE_INT offset; 154 155 /* The size of the memory reference in bytes. Only valid if 156 SIZE_KNOWN_P. */ 157 HOST_WIDE_INT size; 158 159 /* The alias set of the memory reference. */ 160 alias_set_type alias; 161 162 /* The alignment of the reference in bits. Always a multiple of 163 BITS_PER_UNIT. Note that EXPR may have a stricter alignment 164 than the memory reference itself. */ 165 unsigned int align; 166 167 /* The address space that the memory reference uses. */ 168 unsigned char addrspace; 169 170 /* True if OFFSET is known. */ 171 bool offset_known_p; 172 173 /* True if SIZE is known. */ 174 bool size_known_p; 175 }; 176 177 /* Structure used to describe the attributes of a REG in similar way as 178 mem_attrs does for MEM above. Note that the OFFSET field is calculated 179 in the same way as for mem_attrs, rather than in the same way as a 180 SUBREG_BYTE. For example, if a big-endian target stores a byte 181 object in the low part of a 4-byte register, the OFFSET field 182 will be -3 rather than 0. */ 183 184 struct GTY((for_user)) reg_attrs { 185 tree decl; /* decl corresponding to REG. */ 186 HOST_WIDE_INT offset; /* Offset from start of DECL. */ 187 }; 188 189 /* Common union for an element of an rtx. */ 190 191 union rtunion 192 { 193 int rt_int; 194 unsigned int rt_uint; 195 const char *rt_str; 196 rtx rt_rtx; 197 rtvec rt_rtvec; 198 machine_mode rt_type; 199 addr_diff_vec_flags rt_addr_diff_vec_flags; 200 struct cselib_val *rt_cselib; 201 tree rt_tree; 202 basic_block rt_bb; 203 mem_attrs *rt_mem; 204 reg_attrs *rt_reg; 205 struct constant_descriptor_rtx *rt_constant; 206 struct dw_cfi_node *rt_cfi; 207 }; 208 209 /* This structure remembers the position of a SYMBOL_REF within an 210 object_block structure. A SYMBOL_REF only provides this information 211 if SYMBOL_REF_HAS_BLOCK_INFO_P is true. */ 212 struct GTY(()) block_symbol { 213 /* The usual SYMBOL_REF fields. */ 214 rtunion GTY ((skip)) fld[2]; 215 216 /* The block that contains this object. */ 217 struct object_block *block; 218 219 /* The offset of this object from the start of its block. It is negative 220 if the symbol has not yet been assigned an offset. */ 221 HOST_WIDE_INT offset; 222 }; 223 224 /* Describes a group of objects that are to be placed together in such 225 a way that their relative positions are known. */ 226 struct GTY((for_user)) object_block { 227 /* The section in which these objects should be placed. */ 228 section *sect; 229 230 /* The alignment of the first object, measured in bits. */ 231 unsigned int alignment; 232 233 /* The total size of the objects, measured in bytes. */ 234 HOST_WIDE_INT size; 235 236 /* The SYMBOL_REFs for each object. The vector is sorted in 237 order of increasing offset and the following conditions will 238 hold for each element X: 239 240 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 241 !SYMBOL_REF_ANCHOR_P (X) 242 SYMBOL_REF_BLOCK (X) == [address of this structure] 243 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 244 vec<rtx, va_gc> *objects; 245 246 /* All the anchor SYMBOL_REFs used to address these objects, sorted 247 in order of increasing offset, and then increasing TLS model. 248 The following conditions will hold for each element X in this vector: 249 250 SYMBOL_REF_HAS_BLOCK_INFO_P (X) 251 SYMBOL_REF_ANCHOR_P (X) 252 SYMBOL_REF_BLOCK (X) == [address of this structure] 253 SYMBOL_REF_BLOCK_OFFSET (X) >= 0. */ 254 vec<rtx, va_gc> *anchors; 255 }; 256 257 struct GTY((variable_size)) hwivec_def { 258 HOST_WIDE_INT elem[1]; 259 }; 260 261 /* Number of elements of the HWIVEC if RTX is a CONST_WIDE_INT. */ 262 #define CWI_GET_NUM_ELEM(RTX) \ 263 ((int)RTL_FLAG_CHECK1("CWI_GET_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem) 264 #define CWI_PUT_NUM_ELEM(RTX, NUM) \ 265 (RTL_FLAG_CHECK1("CWI_PUT_NUM_ELEM", (RTX), CONST_WIDE_INT)->u2.num_elem = (NUM)) 266 267 /* RTL expression ("rtx"). */ 268 269 /* The GTY "desc" and "tag" options below are a kludge: we need a desc 270 field for for gengtype to recognize that inheritance is occurring, 271 so that all subclasses are redirected to the traversal hook for the 272 base class. 273 However, all of the fields are in the base class, and special-casing 274 is at work. Hence we use desc and tag of 0, generating a switch 275 statement of the form: 276 switch (0) 277 { 278 case 0: // all the work happens here 279 } 280 in order to work with the existing special-casing in gengtype. */ 281 282 struct GTY((desc("0"), tag("0"), 283 chain_next ("RTX_NEXT (&%h)"), 284 chain_prev ("RTX_PREV (&%h)"))) rtx_def { 285 /* The kind of expression this is. */ 286 ENUM_BITFIELD(rtx_code) code: 16; 287 288 /* The kind of value the expression has. */ 289 ENUM_BITFIELD(machine_mode) mode : 8; 290 291 /* 1 in a MEM if we should keep the alias set for this mem unchanged 292 when we access a component. 293 1 in a JUMP_INSN if it is a crossing jump. 294 1 in a CALL_INSN if it is a sibling call. 295 1 in a SET that is for a return. 296 In a CODE_LABEL, part of the two-bit alternate entry field. 297 1 in a CONCAT is VAL_EXPR_IS_COPIED in var-tracking.c. 298 1 in a VALUE is SP_BASED_VALUE_P in cselib.c. 299 1 in a SUBREG generated by LRA for reload insns. 300 1 in a CALL for calls instrumented by Pointer Bounds Checker. */ 301 unsigned int jump : 1; 302 /* In a CODE_LABEL, part of the two-bit alternate entry field. 303 1 in a MEM if it cannot trap. 304 1 in a CALL_INSN logically equivalent to 305 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 306 unsigned int call : 1; 307 /* 1 in a REG, MEM, or CONCAT if the value is set at most once, anywhere. 308 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 309 1 in a SYMBOL_REF if it addresses something in the per-function 310 constants pool. 311 1 in a CALL_INSN logically equivalent to ECF_CONST and TREE_READONLY. 312 1 in a NOTE, or EXPR_LIST for a const call. 313 1 in a JUMP_INSN of an annulling branch. 314 1 in a CONCAT is VAL_EXPR_IS_CLOBBERED in var-tracking.c. 315 1 in a preserved VALUE is PRESERVED_VALUE_P in cselib.c. 316 1 in a clobber temporarily created for LRA. */ 317 unsigned int unchanging : 1; 318 /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 319 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE 320 if it has been deleted. 321 1 in a REG expression if corresponds to a variable declared by the user, 322 0 for an internally generated temporary. 323 1 in a SUBREG used for SUBREG_PROMOTED_UNSIGNED_P. 324 1 in a LABEL_REF, REG_LABEL_TARGET or REG_LABEL_OPERAND note for a 325 non-local label. 326 In a SYMBOL_REF, this flag is used for machine-specific purposes. 327 In a PREFETCH, this flag indicates that it should be considered a scheduling 328 barrier. 329 1 in a CONCAT is VAL_NEEDS_RESOLUTION in var-tracking.c. */ 330 unsigned int volatil : 1; 331 /* 1 in a REG if the register is used only in exit code a loop. 332 1 in a SUBREG expression if was generated from a variable with a 333 promoted mode. 334 1 in a CODE_LABEL if the label is used for nonlocal gotos 335 and must not be deleted even if its count is zero. 336 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled 337 together with the preceding insn. Valid only within sched. 338 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and 339 from the target of a branch. Valid from reorg until end of compilation; 340 cleared before used. 341 342 The name of the field is historical. It used to be used in MEMs 343 to record whether the MEM accessed part of a structure. */ 344 unsigned int in_struct : 1; 345 /* At the end of RTL generation, 1 if this rtx is used. This is used for 346 copying shared structure. See `unshare_all_rtl'. 347 In a REG, this is not needed for that purpose, and used instead 348 in `leaf_renumber_regs_insn'. 349 1 in a SYMBOL_REF, means that emit_library_call 350 has used it as the function. 351 1 in a CONCAT is VAL_HOLDS_TRACK_EXPR in var-tracking.c. 352 1 in a VALUE or DEBUG_EXPR is VALUE_RECURSED_INTO in var-tracking.c. */ 353 unsigned int used : 1; 354 /* 1 in an INSN or a SET if this rtx is related to the call frame, 355 either changing how we compute the frame address or saving and 356 restoring registers in the prologue and epilogue. 357 1 in a REG or MEM if it is a pointer. 358 1 in a SYMBOL_REF if it addresses something in the per-function 359 constant string pool. 360 1 in a VALUE is VALUE_CHANGED in var-tracking.c. */ 361 unsigned frame_related : 1; 362 /* 1 in a REG or PARALLEL that is the current function's return value. 363 1 in a SYMBOL_REF for a weak symbol. 364 1 in a CALL_INSN logically equivalent to ECF_PURE and DECL_PURE_P. 365 1 in a CONCAT is VAL_EXPR_HAS_REVERSE in var-tracking.c. 366 1 in a VALUE or DEBUG_EXPR is NO_LOC_P in var-tracking.c. */ 367 unsigned return_val : 1; 368 369 union { 370 /* The final union field is aligned to 64 bits on LP64 hosts, 371 giving a 32-bit gap after the fields above. We optimize the 372 layout for that case and use the gap for extra code-specific 373 information. */ 374 375 /* The ORIGINAL_REGNO of a REG. */ 376 unsigned int original_regno; 377 378 /* The INSN_UID of an RTX_INSN-class code. */ 379 int insn_uid; 380 381 /* The SYMBOL_REF_FLAGS of a SYMBOL_REF. */ 382 unsigned int symbol_ref_flags; 383 384 /* The PAT_VAR_LOCATION_STATUS of a VAR_LOCATION. */ 385 enum var_init_status var_location_status; 386 387 /* In a CONST_WIDE_INT (aka hwivec_def), this is the number of 388 HOST_WIDE_INTs in the hwivec_def. */ 389 unsigned int num_elem; 390 } GTY ((skip)) u2; 391 392 /* The first element of the operands of this rtx. 393 The number of operands and their types are controlled 394 by the `code' field, according to rtl.def. */ 395 union u { 396 rtunion fld[1]; 397 HOST_WIDE_INT hwint[1]; 398 struct block_symbol block_sym; 399 struct real_value rv; 400 struct fixed_value fv; 401 struct hwivec_def hwiv; 402 } GTY ((special ("rtx_def"), desc ("GET_CODE (&%0)"))) u; 403 }; 404 405 /* A node for constructing singly-linked lists of rtx. */ 406 407 class GTY(()) rtx_expr_list : public rtx_def 408 { 409 /* No extra fields, but adds invariant: (GET_CODE (X) == EXPR_LIST). */ 410 411 public: 412 /* Get next in list. */ 413 rtx_expr_list *next () const; 414 415 /* Get at the underlying rtx. */ 416 rtx element () const; 417 }; 418 419 template <> 420 template <> 421 inline bool 422 is_a_helper <rtx_expr_list *>::test (rtx rt) 423 { 424 return rt->code == EXPR_LIST; 425 } 426 427 class GTY(()) rtx_insn_list : public rtx_def 428 { 429 /* No extra fields, but adds invariant: (GET_CODE (X) == INSN_LIST). 430 431 This is an instance of: 432 433 DEF_RTL_EXPR(INSN_LIST, "insn_list", "ue", RTX_EXTRA) 434 435 i.e. a node for constructing singly-linked lists of rtx_insn *, where 436 the list is "external" to the insn (as opposed to the doubly-linked 437 list embedded within rtx_insn itself). */ 438 439 public: 440 /* Get next in list. */ 441 rtx_insn_list *next () const; 442 443 /* Get at the underlying instruction. */ 444 rtx_insn *insn () const; 445 446 }; 447 448 template <> 449 template <> 450 inline bool 451 is_a_helper <rtx_insn_list *>::test (rtx rt) 452 { 453 return rt->code == INSN_LIST; 454 } 455 456 /* A node with invariant GET_CODE (X) == SEQUENCE i.e. a vector of rtx, 457 typically (but not always) of rtx_insn *, used in the late passes. */ 458 459 class GTY(()) rtx_sequence : public rtx_def 460 { 461 /* No extra fields, but adds invariant: (GET_CODE (X) == SEQUENCE). */ 462 463 public: 464 /* Get number of elements in sequence. */ 465 int len () const; 466 467 /* Get i-th element of the sequence. */ 468 rtx element (int index) const; 469 470 /* Get i-th element of the sequence, with a checked cast to 471 rtx_insn *. */ 472 rtx_insn *insn (int index) const; 473 }; 474 475 template <> 476 template <> 477 inline bool 478 is_a_helper <rtx_sequence *>::test (rtx rt) 479 { 480 return rt->code == SEQUENCE; 481 } 482 483 template <> 484 template <> 485 inline bool 486 is_a_helper <const rtx_sequence *>::test (const_rtx rt) 487 { 488 return rt->code == SEQUENCE; 489 } 490 491 class GTY(()) rtx_insn : public rtx_def 492 { 493 public: 494 /* No extra fields, but adds the invariant: 495 496 (INSN_P (X) 497 || NOTE_P (X) 498 || JUMP_TABLE_DATA_P (X) 499 || BARRIER_P (X) 500 || LABEL_P (X)) 501 502 i.e. that we must be able to use the following: 503 INSN_UID () 504 NEXT_INSN () 505 PREV_INSN () 506 i.e. we have an rtx that has an INSN_UID field and can be part of 507 a linked list of insns. 508 */ 509 510 /* Returns true if this insn has been deleted. */ 511 512 bool deleted () const { return volatil; } 513 514 /* Mark this insn as deleted. */ 515 516 void set_deleted () { volatil = true; } 517 518 /* Mark this insn as not deleted. */ 519 520 void set_undeleted () { volatil = false; } 521 }; 522 523 /* Subclasses of rtx_insn. */ 524 525 class GTY(()) rtx_debug_insn : public rtx_insn 526 { 527 /* No extra fields, but adds the invariant: 528 DEBUG_INSN_P (X) aka (GET_CODE (X) == DEBUG_INSN) 529 i.e. an annotation for tracking variable assignments. 530 531 This is an instance of: 532 DEF_RTL_EXPR(DEBUG_INSN, "debug_insn", "uuBeiie", RTX_INSN) 533 from rtl.def. */ 534 }; 535 536 class GTY(()) rtx_nonjump_insn : public rtx_insn 537 { 538 /* No extra fields, but adds the invariant: 539 NONJUMP_INSN_P (X) aka (GET_CODE (X) == INSN) 540 i.e an instruction that cannot jump. 541 542 This is an instance of: 543 DEF_RTL_EXPR(INSN, "insn", "uuBeiie", RTX_INSN) 544 from rtl.def. */ 545 }; 546 547 class GTY(()) rtx_jump_insn : public rtx_insn 548 { 549 /* No extra fields, but adds the invariant: 550 JUMP_P (X) aka (GET_CODE (X) == JUMP_INSN) 551 i.e. an instruction that can possibly jump. 552 553 This is an instance of: 554 DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "uuBeiie0", RTX_INSN) 555 from rtl.def. */ 556 }; 557 558 class GTY(()) rtx_call_insn : public rtx_insn 559 { 560 /* No extra fields, but adds the invariant: 561 CALL_P (X) aka (GET_CODE (X) == CALL_INSN) 562 i.e. an instruction that can possibly call a subroutine 563 but which will not change which instruction comes next 564 in the current function. 565 566 This is an instance of: 567 DEF_RTL_EXPR(CALL_INSN, "call_insn", "uuBeiiee", RTX_INSN) 568 from rtl.def. */ 569 }; 570 571 class GTY(()) rtx_jump_table_data : public rtx_insn 572 { 573 /* No extra fields, but adds the invariant: 574 JUMP_TABLE_DATA_P (X) aka (GET_CODE (INSN) == JUMP_TABLE_DATA) 575 i.e. a data for a jump table, considered an instruction for 576 historical reasons. 577 578 This is an instance of: 579 DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN) 580 from rtl.def. */ 581 582 public: 583 584 /* This can be either: 585 586 (a) a table of absolute jumps, in which case PATTERN (this) is an 587 ADDR_VEC with arg 0 a vector of labels, or 588 589 (b) a table of relative jumps (e.g. for -fPIC), in which case 590 PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and 591 arg 1 the vector of labels. 592 593 This method gets the underlying vec. */ 594 595 inline rtvec get_labels () const; 596 }; 597 598 class GTY(()) rtx_barrier : public rtx_insn 599 { 600 /* No extra fields, but adds the invariant: 601 BARRIER_P (X) aka (GET_CODE (X) == BARRIER) 602 i.e. a marker that indicates that control will not flow through. 603 604 This is an instance of: 605 DEF_RTL_EXPR(BARRIER, "barrier", "uu00000", RTX_EXTRA) 606 from rtl.def. */ 607 }; 608 609 class GTY(()) rtx_code_label : public rtx_insn 610 { 611 /* No extra fields, but adds the invariant: 612 LABEL_P (X) aka (GET_CODE (X) == CODE_LABEL) 613 i.e. a label in the assembler. 614 615 This is an instance of: 616 DEF_RTL_EXPR(CODE_LABEL, "code_label", "uuB00is", RTX_EXTRA) 617 from rtl.def. */ 618 }; 619 620 class GTY(()) rtx_note : public rtx_insn 621 { 622 /* No extra fields, but adds the invariant: 623 NOTE_P(X) aka (GET_CODE (X) == NOTE) 624 i.e. a note about the corresponding source code. 625 626 This is an instance of: 627 DEF_RTL_EXPR(NOTE, "note", "uuB0ni", RTX_EXTRA) 628 from rtl.def. */ 629 }; 630 631 /* The size in bytes of an rtx header (code, mode and flags). */ 632 #define RTX_HDR_SIZE offsetof (struct rtx_def, u) 633 634 /* The size in bytes of an rtx with code CODE. */ 635 #define RTX_CODE_SIZE(CODE) rtx_code_size[CODE] 636 637 #define NULL_RTX (rtx) 0 638 639 /* The "next" and "previous" RTX, relative to this one. */ 640 641 #define RTX_NEXT(X) (rtx_next[GET_CODE (X)] == 0 ? NULL \ 642 : *(rtx *)(((char *)X) + rtx_next[GET_CODE (X)])) 643 644 /* FIXME: the "NEXT_INSN (PREV_INSN (X)) == X" condition shouldn't be needed. 645 */ 646 #define RTX_PREV(X) ((INSN_P (X) \ 647 || NOTE_P (X) \ 648 || JUMP_TABLE_DATA_P (X) \ 649 || BARRIER_P (X) \ 650 || LABEL_P (X)) \ 651 && PREV_INSN (as_a <rtx_insn *> (X)) != NULL \ 652 && NEXT_INSN (PREV_INSN (as_a <rtx_insn *> (X))) == X \ 653 ? PREV_INSN (as_a <rtx_insn *> (X)) : NULL) 654 655 /* Define macros to access the `code' field of the rtx. */ 656 657 #define GET_CODE(RTX) ((enum rtx_code) (RTX)->code) 658 #define PUT_CODE(RTX, CODE) ((RTX)->code = (CODE)) 659 660 #define GET_MODE(RTX) ((machine_mode) (RTX)->mode) 661 #define PUT_MODE(RTX, MODE) ((RTX)->mode = (MODE)) 662 663 /* RTL vector. These appear inside RTX's when there is a need 664 for a variable number of things. The principle use is inside 665 PARALLEL expressions. */ 666 667 struct GTY(()) rtvec_def { 668 int num_elem; /* number of elements */ 669 rtx GTY ((length ("%h.num_elem"))) elem[1]; 670 }; 671 672 #define NULL_RTVEC (rtvec) 0 673 674 #define GET_NUM_ELEM(RTVEC) ((RTVEC)->num_elem) 675 #define PUT_NUM_ELEM(RTVEC, NUM) ((RTVEC)->num_elem = (NUM)) 676 677 /* Predicate yielding nonzero iff X is an rtx for a register. */ 678 #define REG_P(X) (GET_CODE (X) == REG) 679 680 /* Predicate yielding nonzero iff X is an rtx for a memory location. */ 681 #define MEM_P(X) (GET_CODE (X) == MEM) 682 683 #if TARGET_SUPPORTS_WIDE_INT 684 685 /* Match CONST_*s that can represent compile-time constant integers. */ 686 #define CASE_CONST_SCALAR_INT \ 687 case CONST_INT: \ 688 case CONST_WIDE_INT 689 690 /* Match CONST_*s for which pointer equality corresponds to value 691 equality. */ 692 #define CASE_CONST_UNIQUE \ 693 case CONST_INT: \ 694 case CONST_WIDE_INT: \ 695 case CONST_DOUBLE: \ 696 case CONST_FIXED 697 698 /* Match all CONST_* rtxes. */ 699 #define CASE_CONST_ANY \ 700 case CONST_INT: \ 701 case CONST_WIDE_INT: \ 702 case CONST_DOUBLE: \ 703 case CONST_FIXED: \ 704 case CONST_VECTOR 705 706 #else 707 708 /* Match CONST_*s that can represent compile-time constant integers. */ 709 #define CASE_CONST_SCALAR_INT \ 710 case CONST_INT: \ 711 case CONST_DOUBLE 712 713 /* Match CONST_*s for which pointer equality corresponds to value 714 equality. */ 715 #define CASE_CONST_UNIQUE \ 716 case CONST_INT: \ 717 case CONST_DOUBLE: \ 718 case CONST_FIXED 719 720 /* Match all CONST_* rtxes. */ 721 #define CASE_CONST_ANY \ 722 case CONST_INT: \ 723 case CONST_DOUBLE: \ 724 case CONST_FIXED: \ 725 case CONST_VECTOR 726 #endif 727 728 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 729 #define CONST_INT_P(X) (GET_CODE (X) == CONST_INT) 730 731 /* Predicate yielding nonzero iff X is an rtx for a constant integer. */ 732 #define CONST_WIDE_INT_P(X) (GET_CODE (X) == CONST_WIDE_INT) 733 734 /* Predicate yielding nonzero iff X is an rtx for a constant fixed-point. */ 735 #define CONST_FIXED_P(X) (GET_CODE (X) == CONST_FIXED) 736 737 /* Predicate yielding true iff X is an rtx for a double-int 738 or floating point constant. */ 739 #define CONST_DOUBLE_P(X) (GET_CODE (X) == CONST_DOUBLE) 740 741 /* Predicate yielding true iff X is an rtx for a double-int. */ 742 #define CONST_DOUBLE_AS_INT_P(X) \ 743 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == VOIDmode) 744 745 /* Predicate yielding true iff X is an rtx for a integer const. */ 746 #if TARGET_SUPPORTS_WIDE_INT 747 #define CONST_SCALAR_INT_P(X) \ 748 (CONST_INT_P (X) || CONST_WIDE_INT_P (X)) 749 #else 750 #define CONST_SCALAR_INT_P(X) \ 751 (CONST_INT_P (X) || CONST_DOUBLE_AS_INT_P (X)) 752 #endif 753 754 /* Predicate yielding true iff X is an rtx for a double-int. */ 755 #define CONST_DOUBLE_AS_FLOAT_P(X) \ 756 (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != VOIDmode) 757 758 /* Predicate yielding nonzero iff X is a label insn. */ 759 #define LABEL_P(X) (GET_CODE (X) == CODE_LABEL) 760 761 /* Predicate yielding nonzero iff X is a jump insn. */ 762 #define JUMP_P(X) (GET_CODE (X) == JUMP_INSN) 763 764 /* Predicate yielding nonzero iff X is a call insn. */ 765 #define CALL_P(X) (GET_CODE (X) == CALL_INSN) 766 767 /* Predicate yielding nonzero iff X is an insn that cannot jump. */ 768 #define NONJUMP_INSN_P(X) (GET_CODE (X) == INSN) 769 770 /* Predicate yielding nonzero iff X is a debug note/insn. */ 771 #define DEBUG_INSN_P(X) (GET_CODE (X) == DEBUG_INSN) 772 773 /* Predicate yielding nonzero iff X is an insn that is not a debug insn. */ 774 #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) 775 776 /* Nonzero if DEBUG_INSN_P may possibly hold. */ 777 #define MAY_HAVE_DEBUG_INSNS (flag_var_tracking_assignments) 778 779 /* Predicate yielding nonzero iff X is a real insn. */ 780 #define INSN_P(X) \ 781 (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X)) 782 783 /* Predicate yielding nonzero iff X is a note insn. */ 784 #define NOTE_P(X) (GET_CODE (X) == NOTE) 785 786 /* Predicate yielding nonzero iff X is a barrier insn. */ 787 #define BARRIER_P(X) (GET_CODE (X) == BARRIER) 788 789 /* Predicate yielding nonzero iff X is a data for a jump table. */ 790 #define JUMP_TABLE_DATA_P(INSN) (GET_CODE (INSN) == JUMP_TABLE_DATA) 791 792 /* Predicate yielding nonzero iff RTX is a subreg. */ 793 #define SUBREG_P(RTX) (GET_CODE (RTX) == SUBREG) 794 795 template <> 796 template <> 797 inline bool 798 is_a_helper <rtx_insn *>::test (rtx rt) 799 { 800 return (INSN_P (rt) 801 || NOTE_P (rt) 802 || JUMP_TABLE_DATA_P (rt) 803 || BARRIER_P (rt) 804 || LABEL_P (rt)); 805 } 806 807 template <> 808 template <> 809 inline bool 810 is_a_helper <const rtx_insn *>::test (const_rtx rt) 811 { 812 return (INSN_P (rt) 813 || NOTE_P (rt) 814 || JUMP_TABLE_DATA_P (rt) 815 || BARRIER_P (rt) 816 || LABEL_P (rt)); 817 } 818 819 template <> 820 template <> 821 inline bool 822 is_a_helper <rtx_debug_insn *>::test (rtx rt) 823 { 824 return DEBUG_INSN_P (rt); 825 } 826 827 template <> 828 template <> 829 inline bool 830 is_a_helper <rtx_nonjump_insn *>::test (rtx rt) 831 { 832 return NONJUMP_INSN_P (rt); 833 } 834 835 template <> 836 template <> 837 inline bool 838 is_a_helper <rtx_jump_insn *>::test (rtx rt) 839 { 840 return JUMP_P (rt); 841 } 842 843 template <> 844 template <> 845 inline bool 846 is_a_helper <rtx_call_insn *>::test (rtx rt) 847 { 848 return CALL_P (rt); 849 } 850 851 template <> 852 template <> 853 inline bool 854 is_a_helper <rtx_call_insn *>::test (rtx_insn *insn) 855 { 856 return CALL_P (insn); 857 } 858 859 template <> 860 template <> 861 inline bool 862 is_a_helper <rtx_jump_table_data *>::test (rtx rt) 863 { 864 return JUMP_TABLE_DATA_P (rt); 865 } 866 867 template <> 868 template <> 869 inline bool 870 is_a_helper <rtx_jump_table_data *>::test (rtx_insn *insn) 871 { 872 return JUMP_TABLE_DATA_P (insn); 873 } 874 875 template <> 876 template <> 877 inline bool 878 is_a_helper <rtx_barrier *>::test (rtx rt) 879 { 880 return BARRIER_P (rt); 881 } 882 883 template <> 884 template <> 885 inline bool 886 is_a_helper <rtx_code_label *>::test (rtx rt) 887 { 888 return LABEL_P (rt); 889 } 890 891 template <> 892 template <> 893 inline bool 894 is_a_helper <rtx_code_label *>::test (rtx_insn *insn) 895 { 896 return LABEL_P (insn); 897 } 898 899 template <> 900 template <> 901 inline bool 902 is_a_helper <rtx_note *>::test (rtx rt) 903 { 904 return NOTE_P (rt); 905 } 906 907 template <> 908 template <> 909 inline bool 910 is_a_helper <rtx_note *>::test (rtx_insn *insn) 911 { 912 return NOTE_P (insn); 913 } 914 915 /* Predicate yielding nonzero iff X is a return or simple_return. */ 916 #define ANY_RETURN_P(X) \ 917 (GET_CODE (X) == RETURN || GET_CODE (X) == SIMPLE_RETURN) 918 919 /* 1 if X is a unary operator. */ 920 921 #define UNARY_P(X) \ 922 (GET_RTX_CLASS (GET_CODE (X)) == RTX_UNARY) 923 924 /* 1 if X is a binary operator. */ 925 926 #define BINARY_P(X) \ 927 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_BINARY_MASK) == RTX_BINARY_RESULT) 928 929 /* 1 if X is an arithmetic operator. */ 930 931 #define ARITHMETIC_P(X) \ 932 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_ARITHMETIC_MASK) \ 933 == RTX_ARITHMETIC_RESULT) 934 935 /* 1 if X is an arithmetic operator. */ 936 937 #define COMMUTATIVE_ARITH_P(X) \ 938 (GET_RTX_CLASS (GET_CODE (X)) == RTX_COMM_ARITH) 939 940 /* 1 if X is a commutative arithmetic operator or a comparison operator. 941 These two are sometimes selected together because it is possible to 942 swap the two operands. */ 943 944 #define SWAPPABLE_OPERANDS_P(X) \ 945 ((1 << GET_RTX_CLASS (GET_CODE (X))) \ 946 & ((1 << RTX_COMM_ARITH) | (1 << RTX_COMM_COMPARE) \ 947 | (1 << RTX_COMPARE))) 948 949 /* 1 if X is a non-commutative operator. */ 950 951 #define NON_COMMUTATIVE_P(X) \ 952 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 953 == RTX_NON_COMMUTATIVE_RESULT) 954 955 /* 1 if X is a commutative operator on integers. */ 956 957 #define COMMUTATIVE_P(X) \ 958 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMMUTATIVE_MASK) \ 959 == RTX_COMMUTATIVE_RESULT) 960 961 /* 1 if X is a relational operator. */ 962 963 #define COMPARISON_P(X) \ 964 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_COMPARE_MASK) == RTX_COMPARE_RESULT) 965 966 /* 1 if X is a constant value that is an integer. */ 967 968 #define CONSTANT_P(X) \ 969 (GET_RTX_CLASS (GET_CODE (X)) == RTX_CONST_OBJ) 970 971 /* 1 if X can be used to represent an object. */ 972 #define OBJECT_P(X) \ 973 ((GET_RTX_CLASS (GET_CODE (X)) & RTX_OBJ_MASK) == RTX_OBJ_RESULT) 974 975 /* General accessor macros for accessing the fields of an rtx. */ 976 977 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007) 978 /* The bit with a star outside the statement expr and an & inside is 979 so that N can be evaluated only once. */ 980 #define RTL_CHECK1(RTX, N, C1) __extension__ \ 981 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 982 const enum rtx_code _code = GET_CODE (_rtx); \ 983 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 984 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 985 __FUNCTION__); \ 986 if (GET_RTX_FORMAT (_code)[_n] != C1) \ 987 rtl_check_failed_type1 (_rtx, _n, C1, __FILE__, __LINE__, \ 988 __FUNCTION__); \ 989 &_rtx->u.fld[_n]; })) 990 991 #define RTL_CHECK2(RTX, N, C1, C2) __extension__ \ 992 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 993 const enum rtx_code _code = GET_CODE (_rtx); \ 994 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 995 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 996 __FUNCTION__); \ 997 if (GET_RTX_FORMAT (_code)[_n] != C1 \ 998 && GET_RTX_FORMAT (_code)[_n] != C2) \ 999 rtl_check_failed_type2 (_rtx, _n, C1, C2, __FILE__, __LINE__, \ 1000 __FUNCTION__); \ 1001 &_rtx->u.fld[_n]; })) 1002 1003 #define RTL_CHECKC1(RTX, N, C) __extension__ \ 1004 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1005 if (GET_CODE (_rtx) != (C)) \ 1006 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 1007 __FUNCTION__); \ 1008 &_rtx->u.fld[_n]; })) 1009 1010 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__ \ 1011 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1012 const enum rtx_code _code = GET_CODE (_rtx); \ 1013 if (_code != (C1) && _code != (C2)) \ 1014 rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__, \ 1015 __FUNCTION__); \ 1016 &_rtx->u.fld[_n]; })) 1017 1018 #define RTVEC_ELT(RTVEC, I) __extension__ \ 1019 (*({ __typeof (RTVEC) const _rtvec = (RTVEC); const int _i = (I); \ 1020 if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec)) \ 1021 rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__, \ 1022 __FUNCTION__); \ 1023 &_rtvec->elem[_i]; })) 1024 1025 #define XWINT(RTX, N) __extension__ \ 1026 (*({ __typeof (RTX) const _rtx = (RTX); const int _n = (N); \ 1027 const enum rtx_code _code = GET_CODE (_rtx); \ 1028 if (_n < 0 || _n >= GET_RTX_LENGTH (_code)) \ 1029 rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__, \ 1030 __FUNCTION__); \ 1031 if (GET_RTX_FORMAT (_code)[_n] != 'w') \ 1032 rtl_check_failed_type1 (_rtx, _n, 'w', __FILE__, __LINE__, \ 1033 __FUNCTION__); \ 1034 &_rtx->u.hwint[_n]; })) 1035 1036 #define CWI_ELT(RTX, I) __extension__ \ 1037 (*({ __typeof (RTX) const _cwi = (RTX); \ 1038 int _max = CWI_GET_NUM_ELEM (_cwi); \ 1039 const int _i = (I); \ 1040 if (_i < 0 || _i >= _max) \ 1041 cwi_check_failed_bounds (_cwi, _i, __FILE__, __LINE__, \ 1042 __FUNCTION__); \ 1043 &_cwi->u.hwiv.elem[_i]; })) 1044 1045 #define XCWINT(RTX, N, C) __extension__ \ 1046 (*({ __typeof (RTX) const _rtx = (RTX); \ 1047 if (GET_CODE (_rtx) != (C)) \ 1048 rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__, \ 1049 __FUNCTION__); \ 1050 &_rtx->u.hwint[N]; })) 1051 1052 #define XCMWINT(RTX, N, C, M) __extension__ \ 1053 (*({ __typeof (RTX) const _rtx = (RTX); \ 1054 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) != (M)) \ 1055 rtl_check_failed_code_mode (_rtx, (C), (M), false, __FILE__, \ 1056 __LINE__, __FUNCTION__); \ 1057 &_rtx->u.hwint[N]; })) 1058 1059 #define XCNMPRV(RTX, C, M) __extension__ \ 1060 ({ __typeof (RTX) const _rtx = (RTX); \ 1061 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 1062 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 1063 __LINE__, __FUNCTION__); \ 1064 &_rtx->u.rv; }) 1065 1066 #define XCNMPFV(RTX, C, M) __extension__ \ 1067 ({ __typeof (RTX) const _rtx = (RTX); \ 1068 if (GET_CODE (_rtx) != (C) || GET_MODE (_rtx) == (M)) \ 1069 rtl_check_failed_code_mode (_rtx, (C), (M), true, __FILE__, \ 1070 __LINE__, __FUNCTION__); \ 1071 &_rtx->u.fv; }) 1072 1073 #define BLOCK_SYMBOL_CHECK(RTX) __extension__ \ 1074 ({ __typeof (RTX) const _symbol = (RTX); \ 1075 const unsigned int flags = SYMBOL_REF_FLAGS (_symbol); \ 1076 if ((flags & SYMBOL_FLAG_HAS_BLOCK_INFO) == 0) \ 1077 rtl_check_failed_block_symbol (__FILE__, __LINE__, \ 1078 __FUNCTION__); \ 1079 &_symbol->u.block_sym; }) 1080 1081 #define HWIVEC_CHECK(RTX,C) __extension__ \ 1082 ({ __typeof (RTX) const _symbol = (RTX); \ 1083 RTL_CHECKC1 (_symbol, 0, C); \ 1084 &_symbol->u.hwiv; }) 1085 1086 extern void rtl_check_failed_bounds (const_rtx, int, const char *, int, 1087 const char *) 1088 ATTRIBUTE_NORETURN; 1089 extern void rtl_check_failed_type1 (const_rtx, int, int, const char *, int, 1090 const char *) 1091 ATTRIBUTE_NORETURN; 1092 extern void rtl_check_failed_type2 (const_rtx, int, int, int, const char *, 1093 int, const char *) 1094 ATTRIBUTE_NORETURN; 1095 extern void rtl_check_failed_code1 (const_rtx, enum rtx_code, const char *, 1096 int, const char *) 1097 ATTRIBUTE_NORETURN; 1098 extern void rtl_check_failed_code2 (const_rtx, enum rtx_code, enum rtx_code, 1099 const char *, int, const char *) 1100 ATTRIBUTE_NORETURN; 1101 extern void rtl_check_failed_code_mode (const_rtx, enum rtx_code, machine_mode, 1102 bool, const char *, int, const char *) 1103 ATTRIBUTE_NORETURN; 1104 extern void rtl_check_failed_block_symbol (const char *, int, const char *) 1105 ATTRIBUTE_NORETURN; 1106 extern void cwi_check_failed_bounds (const_rtx, int, const char *, int, 1107 const char *) 1108 ATTRIBUTE_NORETURN; 1109 extern void rtvec_check_failed_bounds (const_rtvec, int, const char *, int, 1110 const char *) 1111 ATTRIBUTE_NORETURN; 1112 1113 #else /* not ENABLE_RTL_CHECKING */ 1114 1115 #define RTL_CHECK1(RTX, N, C1) ((RTX)->u.fld[N]) 1116 #define RTL_CHECK2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 1117 #define RTL_CHECKC1(RTX, N, C) ((RTX)->u.fld[N]) 1118 #define RTL_CHECKC2(RTX, N, C1, C2) ((RTX)->u.fld[N]) 1119 #define RTVEC_ELT(RTVEC, I) ((RTVEC)->elem[I]) 1120 #define XWINT(RTX, N) ((RTX)->u.hwint[N]) 1121 #define CWI_ELT(RTX, I) ((RTX)->u.hwiv.elem[I]) 1122 #define XCWINT(RTX, N, C) ((RTX)->u.hwint[N]) 1123 #define XCMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 1124 #define XCNMWINT(RTX, N, C, M) ((RTX)->u.hwint[N]) 1125 #define XCNMPRV(RTX, C, M) (&(RTX)->u.rv) 1126 #define XCNMPFV(RTX, C, M) (&(RTX)->u.fv) 1127 #define BLOCK_SYMBOL_CHECK(RTX) (&(RTX)->u.block_sym) 1128 #define HWIVEC_CHECK(RTX,C) (&(RTX)->u.hwiv) 1129 1130 #endif 1131 1132 /* General accessor macros for accessing the flags of an rtx. */ 1133 1134 /* Access an individual rtx flag, with no checking of any kind. */ 1135 #define RTX_FLAG(RTX, FLAG) ((RTX)->FLAG) 1136 1137 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION >= 2007) 1138 #define RTL_FLAG_CHECK1(NAME, RTX, C1) __extension__ \ 1139 ({ __typeof (RTX) const _rtx = (RTX); \ 1140 if (GET_CODE (_rtx) != C1) \ 1141 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1142 __FUNCTION__); \ 1143 _rtx; }) 1144 1145 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) __extension__ \ 1146 ({ __typeof (RTX) const _rtx = (RTX); \ 1147 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2) \ 1148 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 1149 __FUNCTION__); \ 1150 _rtx; }) 1151 1152 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) __extension__ \ 1153 ({ __typeof (RTX) const _rtx = (RTX); \ 1154 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \ 1155 && GET_CODE (_rtx) != C3) \ 1156 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1157 __FUNCTION__); \ 1158 _rtx; }) 1159 1160 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) __extension__ \ 1161 ({ __typeof (RTX) const _rtx = (RTX); \ 1162 if (GET_CODE (_rtx) != C1 && GET_CODE(_rtx) != C2 \ 1163 && GET_CODE (_rtx) != C3 && GET_CODE(_rtx) != C4) \ 1164 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1165 __FUNCTION__); \ 1166 _rtx; }) 1167 1168 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) __extension__ \ 1169 ({ __typeof (RTX) const _rtx = (RTX); \ 1170 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1171 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1172 && GET_CODE (_rtx) != C5) \ 1173 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1174 __FUNCTION__); \ 1175 _rtx; }) 1176 1177 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) \ 1178 __extension__ \ 1179 ({ __typeof (RTX) const _rtx = (RTX); \ 1180 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1181 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1182 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6) \ 1183 rtl_check_failed_flag (NAME,_rtx, __FILE__, __LINE__, \ 1184 __FUNCTION__); \ 1185 _rtx; }) 1186 1187 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) \ 1188 __extension__ \ 1189 ({ __typeof (RTX) const _rtx = (RTX); \ 1190 if (GET_CODE (_rtx) != C1 && GET_CODE (_rtx) != C2 \ 1191 && GET_CODE (_rtx) != C3 && GET_CODE (_rtx) != C4 \ 1192 && GET_CODE (_rtx) != C5 && GET_CODE (_rtx) != C6 \ 1193 && GET_CODE (_rtx) != C7) \ 1194 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1195 __FUNCTION__); \ 1196 _rtx; }) 1197 1198 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) \ 1199 __extension__ \ 1200 ({ __typeof (RTX) const _rtx = (RTX); \ 1201 if (!INSN_CHAIN_CODE_P (GET_CODE (_rtx))) \ 1202 rtl_check_failed_flag (NAME, _rtx, __FILE__, __LINE__, \ 1203 __FUNCTION__); \ 1204 _rtx; }) 1205 1206 extern void rtl_check_failed_flag (const char *, const_rtx, const char *, 1207 int, const char *) 1208 ATTRIBUTE_NORETURN 1209 ; 1210 1211 #else /* not ENABLE_RTL_FLAG_CHECKING */ 1212 1213 #define RTL_FLAG_CHECK1(NAME, RTX, C1) (RTX) 1214 #define RTL_FLAG_CHECK2(NAME, RTX, C1, C2) (RTX) 1215 #define RTL_FLAG_CHECK3(NAME, RTX, C1, C2, C3) (RTX) 1216 #define RTL_FLAG_CHECK4(NAME, RTX, C1, C2, C3, C4) (RTX) 1217 #define RTL_FLAG_CHECK5(NAME, RTX, C1, C2, C3, C4, C5) (RTX) 1218 #define RTL_FLAG_CHECK6(NAME, RTX, C1, C2, C3, C4, C5, C6) (RTX) 1219 #define RTL_FLAG_CHECK7(NAME, RTX, C1, C2, C3, C4, C5, C6, C7) (RTX) 1220 #define RTL_INSN_CHAIN_FLAG_CHECK(NAME, RTX) (RTX) 1221 #endif 1222 1223 #define XINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_int) 1224 #define XUINT(RTX, N) (RTL_CHECK2 (RTX, N, 'i', 'n').rt_uint) 1225 #define XSTR(RTX, N) (RTL_CHECK2 (RTX, N, 's', 'S').rt_str) 1226 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx) 1227 #define XVEC(RTX, N) (RTL_CHECK2 (RTX, N, 'E', 'V').rt_rtvec) 1228 #define XMODE(RTX, N) (RTL_CHECK1 (RTX, N, 'M').rt_type) 1229 #define XTREE(RTX, N) (RTL_CHECK1 (RTX, N, 't').rt_tree) 1230 #define XBBDEF(RTX, N) (RTL_CHECK1 (RTX, N, 'B').rt_bb) 1231 #define XTMPL(RTX, N) (RTL_CHECK1 (RTX, N, 'T').rt_str) 1232 #define XCFI(RTX, N) (RTL_CHECK1 (RTX, N, 'C').rt_cfi) 1233 1234 #define XVECEXP(RTX, N, M) RTVEC_ELT (XVEC (RTX, N), M) 1235 #define XVECLEN(RTX, N) GET_NUM_ELEM (XVEC (RTX, N)) 1236 1237 /* These are like XINT, etc. except that they expect a '0' field instead 1238 of the normal type code. */ 1239 1240 #define X0INT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_int) 1241 #define X0UINT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_uint) 1242 #define X0STR(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_str) 1243 #define X0EXP(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtx) 1244 #define X0VEC(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_rtvec) 1245 #define X0MODE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_type) 1246 #define X0TREE(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_tree) 1247 #define X0BBDEF(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_bb) 1248 #define X0ADVFLAGS(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_addr_diff_vec_flags) 1249 #define X0CSELIB(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_cselib) 1250 #define X0MEMATTR(RTX, N) (RTL_CHECKC1 (RTX, N, MEM).rt_mem) 1251 #define X0REGATTR(RTX, N) (RTL_CHECKC1 (RTX, N, REG).rt_reg) 1252 #define X0CONSTANT(RTX, N) (RTL_CHECK1 (RTX, N, '0').rt_constant) 1253 1254 /* Access a '0' field with any type. */ 1255 #define X0ANY(RTX, N) RTL_CHECK1 (RTX, N, '0') 1256 1257 #define XCINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_int) 1258 #define XCUINT(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_uint) 1259 #define XCSTR(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_str) 1260 #define XCEXP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtx) 1261 #define XCVEC(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_rtvec) 1262 #define XCMODE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_type) 1263 #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) 1264 #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) 1265 #define XCCFI(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cfi) 1266 #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) 1267 1268 #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) 1269 #define XCVECLEN(RTX, N, C) GET_NUM_ELEM (XCVEC (RTX, N, C)) 1270 1271 #define XC2EXP(RTX, N, C1, C2) (RTL_CHECKC2 (RTX, N, C1, C2).rt_rtx) 1272 1273 1274 /* Methods of rtx_expr_list. */ 1275 1276 inline rtx_expr_list *rtx_expr_list::next () const 1277 { 1278 rtx tmp = XEXP (this, 1); 1279 return safe_as_a <rtx_expr_list *> (tmp); 1280 } 1281 1282 inline rtx rtx_expr_list::element () const 1283 { 1284 return XEXP (this, 0); 1285 } 1286 1287 /* Methods of rtx_insn_list. */ 1288 1289 inline rtx_insn_list *rtx_insn_list::next () const 1290 { 1291 rtx tmp = XEXP (this, 1); 1292 return safe_as_a <rtx_insn_list *> (tmp); 1293 } 1294 1295 inline rtx_insn *rtx_insn_list::insn () const 1296 { 1297 rtx tmp = XEXP (this, 0); 1298 return safe_as_a <rtx_insn *> (tmp); 1299 } 1300 1301 /* Methods of rtx_sequence. */ 1302 1303 inline int rtx_sequence::len () const 1304 { 1305 return XVECLEN (this, 0); 1306 } 1307 1308 inline rtx rtx_sequence::element (int index) const 1309 { 1310 return XVECEXP (this, 0, index); 1311 } 1312 1313 inline rtx_insn *rtx_sequence::insn (int index) const 1314 { 1315 return as_a <rtx_insn *> (XVECEXP (this, 0, index)); 1316 } 1317 1318 /* ACCESS MACROS for particular fields of insns. */ 1319 1320 /* Holds a unique number for each insn. 1321 These are not necessarily sequentially increasing. */ 1322 inline int INSN_UID (const_rtx insn) 1323 { 1324 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID", 1325 (insn))->u2.insn_uid; 1326 } 1327 inline int& INSN_UID (rtx insn) 1328 { 1329 return RTL_INSN_CHAIN_FLAG_CHECK ("INSN_UID", 1330 (insn))->u2.insn_uid; 1331 } 1332 1333 /* Chain insns together in sequence. */ 1334 1335 /* For now these are split in two: an rvalue form: 1336 PREV_INSN/NEXT_INSN 1337 and an lvalue form: 1338 SET_NEXT_INSN/SET_PREV_INSN. */ 1339 1340 inline rtx_insn *PREV_INSN (const rtx_insn *insn) 1341 { 1342 rtx prev = XEXP (insn, 0); 1343 return safe_as_a <rtx_insn *> (prev); 1344 } 1345 1346 inline rtx& SET_PREV_INSN (rtx_insn *insn) 1347 { 1348 return XEXP (insn, 0); 1349 } 1350 1351 inline rtx_insn *NEXT_INSN (const rtx_insn *insn) 1352 { 1353 rtx next = XEXP (insn, 1); 1354 return safe_as_a <rtx_insn *> (next); 1355 } 1356 1357 inline rtx& SET_NEXT_INSN (rtx_insn *insn) 1358 { 1359 return XEXP (insn, 1); 1360 } 1361 1362 inline basic_block BLOCK_FOR_INSN (const_rtx insn) 1363 { 1364 return XBBDEF (insn, 2); 1365 } 1366 1367 inline basic_block& BLOCK_FOR_INSN (rtx insn) 1368 { 1369 return XBBDEF (insn, 2); 1370 } 1371 1372 inline void set_block_for_insn (rtx_insn *insn, basic_block bb) 1373 { 1374 BLOCK_FOR_INSN (insn) = bb; 1375 } 1376 1377 /* The body of an insn. */ 1378 inline rtx PATTERN (const_rtx insn) 1379 { 1380 return XEXP (insn, 3); 1381 } 1382 1383 inline rtx& PATTERN (rtx insn) 1384 { 1385 return XEXP (insn, 3); 1386 } 1387 1388 inline unsigned int INSN_LOCATION (const rtx_insn *insn) 1389 { 1390 return XUINT (insn, 4); 1391 } 1392 1393 inline unsigned int& INSN_LOCATION (rtx_insn *insn) 1394 { 1395 return XUINT (insn, 4); 1396 } 1397 1398 inline bool INSN_HAS_LOCATION (const rtx_insn *insn) 1399 { 1400 return LOCATION_LOCUS (INSN_LOCATION (insn)) != UNKNOWN_LOCATION; 1401 } 1402 1403 /* LOCATION of an RTX if relevant. */ 1404 #define RTL_LOCATION(X) (INSN_P (X) ? \ 1405 INSN_LOCATION (as_a <rtx_insn *> (X)) \ 1406 : UNKNOWN_LOCATION) 1407 1408 /* Code number of instruction, from when it was recognized. 1409 -1 means this instruction has not been recognized yet. */ 1410 #define INSN_CODE(INSN) XINT (INSN, 5) 1411 1412 inline rtvec rtx_jump_table_data::get_labels () const 1413 { 1414 rtx pat = PATTERN (this); 1415 if (GET_CODE (pat) == ADDR_VEC) 1416 return XVEC (pat, 0); 1417 else 1418 return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */ 1419 } 1420 1421 #define RTX_FRAME_RELATED_P(RTX) \ 1422 (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \ 1423 CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related) 1424 1425 /* 1 if JUMP RTX is a crossing jump. */ 1426 #define CROSSING_JUMP_P(RTX) \ 1427 (RTL_FLAG_CHECK1 ("CROSSING_JUMP_P", (RTX), JUMP_INSN)->jump) 1428 1429 /* 1 if RTX is a call to a const function. Built from ECF_CONST and 1430 TREE_READONLY. */ 1431 #define RTL_CONST_CALL_P(RTX) \ 1432 (RTL_FLAG_CHECK1 ("RTL_CONST_CALL_P", (RTX), CALL_INSN)->unchanging) 1433 1434 /* 1 if RTX is a call to a pure function. Built from ECF_PURE and 1435 DECL_PURE_P. */ 1436 #define RTL_PURE_CALL_P(RTX) \ 1437 (RTL_FLAG_CHECK1 ("RTL_PURE_CALL_P", (RTX), CALL_INSN)->return_val) 1438 1439 /* 1 if RTX is a call to a const or pure function. */ 1440 #define RTL_CONST_OR_PURE_CALL_P(RTX) \ 1441 (RTL_CONST_CALL_P (RTX) || RTL_PURE_CALL_P (RTX)) 1442 1443 /* 1 if RTX is a call to a looping const or pure function. Built from 1444 ECF_LOOPING_CONST_OR_PURE and DECL_LOOPING_CONST_OR_PURE_P. */ 1445 #define RTL_LOOPING_CONST_OR_PURE_CALL_P(RTX) \ 1446 (RTL_FLAG_CHECK1 ("CONST_OR_PURE_CALL_P", (RTX), CALL_INSN)->call) 1447 1448 /* 1 if RTX is a call_insn for a sibling call. */ 1449 #define SIBLING_CALL_P(RTX) \ 1450 (RTL_FLAG_CHECK1 ("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) 1451 1452 /* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */ 1453 #define INSN_ANNULLED_BRANCH_P(RTX) \ 1454 (RTL_FLAG_CHECK1 ("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN)->unchanging) 1455 1456 /* 1 if RTX is an insn in a delay slot and is from the target of the branch. 1457 If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be 1458 executed if the branch is taken. For annulled branches with this bit 1459 clear, the insn should be executed only if the branch is not taken. */ 1460 #define INSN_FROM_TARGET_P(RTX) \ 1461 (RTL_FLAG_CHECK3 ("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, \ 1462 CALL_INSN)->in_struct) 1463 1464 /* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. 1465 See the comments for ADDR_DIFF_VEC in rtl.def. */ 1466 #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS (RTX, 4) 1467 1468 /* In a VALUE, the value cselib has assigned to RTX. 1469 This is a "struct cselib_val", see cselib.h. */ 1470 #define CSELIB_VAL_PTR(RTX) X0CSELIB (RTX, 0) 1471 1472 /* Holds a list of notes on what this insn does to various REGs. 1473 It is a chain of EXPR_LIST rtx's, where the second operand is the 1474 chain pointer and the first operand is the REG being described. 1475 The mode field of the EXPR_LIST contains not a real machine mode 1476 but a value from enum reg_note. */ 1477 #define REG_NOTES(INSN) XEXP(INSN, 6) 1478 1479 /* In an ENTRY_VALUE this is the DECL_INCOMING_RTL of the argument in 1480 question. */ 1481 #define ENTRY_VALUE_EXP(RTX) (RTL_CHECKC1 (RTX, 0, ENTRY_VALUE).rt_rtx) 1482 1483 enum reg_note 1484 { 1485 #define DEF_REG_NOTE(NAME) NAME, 1486 #include "reg-notes.def" 1487 #undef DEF_REG_NOTE 1488 REG_NOTE_MAX 1489 }; 1490 1491 /* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */ 1492 #define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK)) 1493 #define PUT_REG_NOTE_KIND(LINK, KIND) \ 1494 PUT_MODE (LINK, (machine_mode) (KIND)) 1495 1496 /* Names for REG_NOTE's in EXPR_LIST insn's. */ 1497 1498 extern const char * const reg_note_name[]; 1499 #define GET_REG_NOTE_NAME(MODE) (reg_note_name[(int) (MODE)]) 1500 1501 /* This field is only present on CALL_INSNs. It holds a chain of EXPR_LIST of 1502 USE and CLOBBER expressions. 1503 USE expressions list the registers filled with arguments that 1504 are passed to the function. 1505 CLOBBER expressions document the registers explicitly clobbered 1506 by this CALL_INSN. 1507 Pseudo registers can not be mentioned in this list. */ 1508 #define CALL_INSN_FUNCTION_USAGE(INSN) XEXP(INSN, 7) 1509 1510 /* The label-number of a code-label. The assembler label 1511 is made from `L' and the label-number printed in decimal. 1512 Label numbers are unique in a compilation. */ 1513 #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 5) 1514 1515 /* In a NOTE that is a line number, this is a string for the file name that the 1516 line is in. We use the same field to record block numbers temporarily in 1517 NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts 1518 between ints and pointers if we use a different macro for the block number.) 1519 */ 1520 1521 /* Opaque data. */ 1522 #define NOTE_DATA(INSN) RTL_CHECKC1 (INSN, 3, NOTE) 1523 #define NOTE_DELETED_LABEL_NAME(INSN) XCSTR (INSN, 3, NOTE) 1524 #define SET_INSN_DELETED(INSN) set_insn_deleted (INSN); 1525 #define NOTE_BLOCK(INSN) XCTREE (INSN, 3, NOTE) 1526 #define NOTE_EH_HANDLER(INSN) XCINT (INSN, 3, NOTE) 1527 #define NOTE_BASIC_BLOCK(INSN) XCBBDEF (INSN, 3, NOTE) 1528 #define NOTE_VAR_LOCATION(INSN) XCEXP (INSN, 3, NOTE) 1529 #define NOTE_CFI(INSN) XCCFI (INSN, 3, NOTE) 1530 #define NOTE_LABEL_NUMBER(INSN) XCINT (INSN, 3, NOTE) 1531 1532 /* In a NOTE that is a line number, this is the line number. 1533 Other kinds of NOTEs are identified by negative numbers here. */ 1534 #define NOTE_KIND(INSN) XCINT (INSN, 4, NOTE) 1535 1536 /* Nonzero if INSN is a note marking the beginning of a basic block. */ 1537 #define NOTE_INSN_BASIC_BLOCK_P(INSN) \ 1538 (NOTE_P (INSN) && NOTE_KIND (INSN) == NOTE_INSN_BASIC_BLOCK) 1539 1540 /* Variable declaration and the location of a variable. */ 1541 #define PAT_VAR_LOCATION_DECL(PAT) (XCTREE ((PAT), 0, VAR_LOCATION)) 1542 #define PAT_VAR_LOCATION_LOC(PAT) (XCEXP ((PAT), 1, VAR_LOCATION)) 1543 1544 /* Initialization status of the variable in the location. Status 1545 can be unknown, uninitialized or initialized. See enumeration 1546 type below. */ 1547 #define PAT_VAR_LOCATION_STATUS(PAT) \ 1548 (RTL_FLAG_CHECK1 ("PAT_VAR_LOCATION_STATUS", PAT, VAR_LOCATION) \ 1549 ->u2.var_location_status) 1550 1551 /* Accessors for a NOTE_INSN_VAR_LOCATION. */ 1552 #define NOTE_VAR_LOCATION_DECL(NOTE) \ 1553 PAT_VAR_LOCATION_DECL (NOTE_VAR_LOCATION (NOTE)) 1554 #define NOTE_VAR_LOCATION_LOC(NOTE) \ 1555 PAT_VAR_LOCATION_LOC (NOTE_VAR_LOCATION (NOTE)) 1556 #define NOTE_VAR_LOCATION_STATUS(NOTE) \ 1557 PAT_VAR_LOCATION_STATUS (NOTE_VAR_LOCATION (NOTE)) 1558 1559 /* The VAR_LOCATION rtx in a DEBUG_INSN. */ 1560 #define INSN_VAR_LOCATION(INSN) PATTERN (INSN) 1561 1562 /* Accessors for a tree-expanded var location debug insn. */ 1563 #define INSN_VAR_LOCATION_DECL(INSN) \ 1564 PAT_VAR_LOCATION_DECL (INSN_VAR_LOCATION (INSN)) 1565 #define INSN_VAR_LOCATION_LOC(INSN) \ 1566 PAT_VAR_LOCATION_LOC (INSN_VAR_LOCATION (INSN)) 1567 #define INSN_VAR_LOCATION_STATUS(INSN) \ 1568 PAT_VAR_LOCATION_STATUS (INSN_VAR_LOCATION (INSN)) 1569 1570 /* Expand to the RTL that denotes an unknown variable location in a 1571 DEBUG_INSN. */ 1572 #define gen_rtx_UNKNOWN_VAR_LOC() (gen_rtx_CLOBBER (VOIDmode, const0_rtx)) 1573 1574 /* Determine whether X is such an unknown location. */ 1575 #define VAR_LOC_UNKNOWN_P(X) \ 1576 (GET_CODE (X) == CLOBBER && XEXP ((X), 0) == const0_rtx) 1577 1578 /* 1 if RTX is emitted after a call, but it should take effect before 1579 the call returns. */ 1580 #define NOTE_DURING_CALL_P(RTX) \ 1581 (RTL_FLAG_CHECK1 ("NOTE_VAR_LOCATION_DURING_CALL_P", (RTX), NOTE)->call) 1582 1583 /* DEBUG_EXPR_DECL corresponding to a DEBUG_EXPR RTX. */ 1584 #define DEBUG_EXPR_TREE_DECL(RTX) XCTREE (RTX, 0, DEBUG_EXPR) 1585 1586 /* VAR_DECL/PARM_DECL DEBUG_IMPLICIT_PTR takes address of. */ 1587 #define DEBUG_IMPLICIT_PTR_DECL(RTX) XCTREE (RTX, 0, DEBUG_IMPLICIT_PTR) 1588 1589 /* PARM_DECL DEBUG_PARAMETER_REF references. */ 1590 #define DEBUG_PARAMETER_REF_DECL(RTX) XCTREE (RTX, 0, DEBUG_PARAMETER_REF) 1591 1592 /* Codes that appear in the NOTE_KIND field for kinds of notes 1593 that are not line numbers. These codes are all negative. 1594 1595 Notice that we do not try to use zero here for any of 1596 the special note codes because sometimes the source line 1597 actually can be zero! This happens (for example) when we 1598 are generating code for the per-translation-unit constructor 1599 and destructor routines for some C++ translation unit. */ 1600 1601 enum insn_note 1602 { 1603 #define DEF_INSN_NOTE(NAME) NAME, 1604 #include "insn-notes.def" 1605 #undef DEF_INSN_NOTE 1606 1607 NOTE_INSN_MAX 1608 }; 1609 1610 /* Names for NOTE insn's other than line numbers. */ 1611 1612 extern const char * const note_insn_name[NOTE_INSN_MAX]; 1613 #define GET_NOTE_INSN_NAME(NOTE_CODE) \ 1614 (note_insn_name[(NOTE_CODE)]) 1615 1616 /* The name of a label, in case it corresponds to an explicit label 1617 in the input source code. */ 1618 #define LABEL_NAME(RTX) XCSTR (RTX, 6, CODE_LABEL) 1619 1620 /* In jump.c, each label contains a count of the number 1621 of LABEL_REFs that point at it, so unused labels can be deleted. */ 1622 #define LABEL_NUSES(RTX) XCINT (RTX, 4, CODE_LABEL) 1623 1624 /* Labels carry a two-bit field composed of the ->jump and ->call 1625 bits. This field indicates whether the label is an alternate 1626 entry point, and if so, what kind. */ 1627 enum label_kind 1628 { 1629 LABEL_NORMAL = 0, /* ordinary label */ 1630 LABEL_STATIC_ENTRY, /* alternate entry point, not exported */ 1631 LABEL_GLOBAL_ENTRY, /* alternate entry point, exported */ 1632 LABEL_WEAK_ENTRY /* alternate entry point, exported as weak symbol */ 1633 }; 1634 1635 #if defined ENABLE_RTL_FLAG_CHECKING && (GCC_VERSION > 2007) 1636 1637 /* Retrieve the kind of LABEL. */ 1638 #define LABEL_KIND(LABEL) __extension__ \ 1639 ({ __typeof (LABEL) const _label = (LABEL); \ 1640 if (! LABEL_P (_label)) \ 1641 rtl_check_failed_flag ("LABEL_KIND", _label, __FILE__, __LINE__, \ 1642 __FUNCTION__); \ 1643 (enum label_kind) ((_label->jump << 1) | _label->call); }) 1644 1645 /* Set the kind of LABEL. */ 1646 #define SET_LABEL_KIND(LABEL, KIND) do { \ 1647 __typeof (LABEL) const _label = (LABEL); \ 1648 const unsigned int _kind = (KIND); \ 1649 if (! LABEL_P (_label)) \ 1650 rtl_check_failed_flag ("SET_LABEL_KIND", _label, __FILE__, __LINE__, \ 1651 __FUNCTION__); \ 1652 _label->jump = ((_kind >> 1) & 1); \ 1653 _label->call = (_kind & 1); \ 1654 } while (0) 1655 1656 #else 1657 1658 /* Retrieve the kind of LABEL. */ 1659 #define LABEL_KIND(LABEL) \ 1660 ((enum label_kind) (((LABEL)->jump << 1) | (LABEL)->call)) 1661 1662 /* Set the kind of LABEL. */ 1663 #define SET_LABEL_KIND(LABEL, KIND) do { \ 1664 rtx const _label = (LABEL); \ 1665 const unsigned int _kind = (KIND); \ 1666 _label->jump = ((_kind >> 1) & 1); \ 1667 _label->call = (_kind & 1); \ 1668 } while (0) 1669 1670 #endif /* rtl flag checking */ 1671 1672 #define LABEL_ALT_ENTRY_P(LABEL) (LABEL_KIND (LABEL) != LABEL_NORMAL) 1673 1674 /* In jump.c, each JUMP_INSN can point to a label that it can jump to, 1675 so that if the JUMP_INSN is deleted, the label's LABEL_NUSES can 1676 be decremented and possibly the label can be deleted. */ 1677 #define JUMP_LABEL(INSN) XCEXP (INSN, 7, JUMP_INSN) 1678 1679 inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn) 1680 { 1681 return safe_as_a <rtx_insn *> (JUMP_LABEL (insn)); 1682 } 1683 1684 /* Once basic blocks are found, each CODE_LABEL starts a chain that 1685 goes through all the LABEL_REFs that jump to that label. The chain 1686 eventually winds up at the CODE_LABEL: it is circular. */ 1687 #define LABEL_REFS(LABEL) XCEXP (LABEL, 3, CODE_LABEL) 1688 1689 /* Get the label that a LABEL_REF references. */ 1690 #define LABEL_REF_LABEL(LABREF) XCEXP (LABREF, 0, LABEL_REF) 1691 1692 1693 /* For a REG rtx, REGNO extracts the register number. REGNO can only 1694 be used on RHS. Use SET_REGNO to change the value. */ 1695 #define REGNO(RTX) (rhs_regno(RTX)) 1696 #define SET_REGNO(RTX,N) \ 1697 (df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N) 1698 #define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N) 1699 1700 /* ORIGINAL_REGNO holds the number the register originally had; for a 1701 pseudo register turned into a hard reg this will hold the old pseudo 1702 register number. */ 1703 #define ORIGINAL_REGNO(RTX) \ 1704 (RTL_FLAG_CHECK1 ("ORIGINAL_REGNO", (RTX), REG)->u2.original_regno) 1705 1706 /* Force the REGNO macro to only be used on the lhs. */ 1707 static inline unsigned int 1708 rhs_regno (const_rtx x) 1709 { 1710 return XCUINT (x, 0, REG); 1711 } 1712 1713 1714 /* 1 if RTX is a reg or parallel that is the current function's return 1715 value. */ 1716 #define REG_FUNCTION_VALUE_P(RTX) \ 1717 (RTL_FLAG_CHECK2 ("REG_FUNCTION_VALUE_P", (RTX), REG, PARALLEL)->return_val) 1718 1719 /* 1 if RTX is a reg that corresponds to a variable declared by the user. */ 1720 #define REG_USERVAR_P(RTX) \ 1721 (RTL_FLAG_CHECK1 ("REG_USERVAR_P", (RTX), REG)->volatil) 1722 1723 /* 1 if RTX is a reg that holds a pointer value. */ 1724 #define REG_POINTER(RTX) \ 1725 (RTL_FLAG_CHECK1 ("REG_POINTER", (RTX), REG)->frame_related) 1726 1727 /* 1 if RTX is a mem that holds a pointer value. */ 1728 #define MEM_POINTER(RTX) \ 1729 (RTL_FLAG_CHECK1 ("MEM_POINTER", (RTX), MEM)->frame_related) 1730 1731 /* 1 if the given register REG corresponds to a hard register. */ 1732 #define HARD_REGISTER_P(REG) (HARD_REGISTER_NUM_P (REGNO (REG))) 1733 1734 /* 1 if the given register number REG_NO corresponds to a hard register. */ 1735 #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) 1736 1737 /* For a CONST_INT rtx, INTVAL extracts the integer. */ 1738 #define INTVAL(RTX) XCWINT (RTX, 0, CONST_INT) 1739 #define UINTVAL(RTX) ((unsigned HOST_WIDE_INT) INTVAL (RTX)) 1740 1741 /* For a CONST_WIDE_INT, CONST_WIDE_INT_NUNITS is the number of 1742 elements actually needed to represent the constant. 1743 CONST_WIDE_INT_ELT gets one of the elements. 0 is the least 1744 significant HOST_WIDE_INT. */ 1745 #define CONST_WIDE_INT_VEC(RTX) HWIVEC_CHECK (RTX, CONST_WIDE_INT) 1746 #define CONST_WIDE_INT_NUNITS(RTX) CWI_GET_NUM_ELEM (RTX) 1747 #define CONST_WIDE_INT_ELT(RTX, N) CWI_ELT (RTX, N) 1748 1749 /* For a CONST_DOUBLE: 1750 #if TARGET_SUPPORTS_WIDE_INT == 0 1751 For a VOIDmode, there are two integers CONST_DOUBLE_LOW is the 1752 low-order word and ..._HIGH the high-order. 1753 #endif 1754 For a float, there is a REAL_VALUE_TYPE structure, and 1755 CONST_DOUBLE_REAL_VALUE(r) is a pointer to it. */ 1756 #define CONST_DOUBLE_LOW(r) XCMWINT (r, 0, CONST_DOUBLE, VOIDmode) 1757 #define CONST_DOUBLE_HIGH(r) XCMWINT (r, 1, CONST_DOUBLE, VOIDmode) 1758 #define CONST_DOUBLE_REAL_VALUE(r) \ 1759 ((const struct real_value *) XCNMPRV (r, CONST_DOUBLE, VOIDmode)) 1760 1761 #define CONST_FIXED_VALUE(r) \ 1762 ((const struct fixed_value *) XCNMPFV (r, CONST_FIXED, VOIDmode)) 1763 #define CONST_FIXED_VALUE_HIGH(r) \ 1764 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.high)) 1765 #define CONST_FIXED_VALUE_LOW(r) \ 1766 ((HOST_WIDE_INT) (CONST_FIXED_VALUE (r)->data.low)) 1767 1768 /* For a CONST_VECTOR, return element #n. */ 1769 #define CONST_VECTOR_ELT(RTX, N) XCVECEXP (RTX, 0, N, CONST_VECTOR) 1770 1771 /* For a CONST_VECTOR, return the number of elements in a vector. */ 1772 #define CONST_VECTOR_NUNITS(RTX) XCVECLEN (RTX, 0, CONST_VECTOR) 1773 1774 /* For a SUBREG rtx, SUBREG_REG extracts the value we want a subreg of. 1775 SUBREG_BYTE extracts the byte-number. */ 1776 1777 #define SUBREG_REG(RTX) XCEXP (RTX, 0, SUBREG) 1778 #define SUBREG_BYTE(RTX) XCUINT (RTX, 1, SUBREG) 1779 1780 /* in rtlanal.c */ 1781 /* Return the right cost to give to an operation 1782 to make the cost of the corresponding register-to-register instruction 1783 N times that of a fast register-to-register instruction. */ 1784 #define COSTS_N_INSNS(N) ((N) * 4) 1785 1786 /* Maximum cost of an rtl expression. This value has the special meaning 1787 not to use an rtx with this cost under any circumstances. */ 1788 #define MAX_COST INT_MAX 1789 1790 /* A structure to hold all available cost information about an rtl 1791 expression. */ 1792 struct full_rtx_costs 1793 { 1794 int speed; 1795 int size; 1796 }; 1797 1798 /* Initialize a full_rtx_costs structure C to the maximum cost. */ 1799 static inline void 1800 init_costs_to_max (struct full_rtx_costs *c) 1801 { 1802 c->speed = MAX_COST; 1803 c->size = MAX_COST; 1804 } 1805 1806 /* Initialize a full_rtx_costs structure C to zero cost. */ 1807 static inline void 1808 init_costs_to_zero (struct full_rtx_costs *c) 1809 { 1810 c->speed = 0; 1811 c->size = 0; 1812 } 1813 1814 /* Compare two full_rtx_costs structures A and B, returning true 1815 if A < B when optimizing for speed. */ 1816 static inline bool 1817 costs_lt_p (struct full_rtx_costs *a, struct full_rtx_costs *b, 1818 bool speed) 1819 { 1820 if (speed) 1821 return (a->speed < b->speed 1822 || (a->speed == b->speed && a->size < b->size)); 1823 else 1824 return (a->size < b->size 1825 || (a->size == b->size && a->speed < b->speed)); 1826 } 1827 1828 /* Increase both members of the full_rtx_costs structure C by the 1829 cost of N insns. */ 1830 static inline void 1831 costs_add_n_insns (struct full_rtx_costs *c, int n) 1832 { 1833 c->speed += COSTS_N_INSNS (n); 1834 c->size += COSTS_N_INSNS (n); 1835 } 1836 1837 /* Describes the shape of a subreg: 1838 1839 inner_mode == the mode of the SUBREG_REG 1840 offset == the SUBREG_BYTE 1841 outer_mode == the mode of the SUBREG itself. */ 1842 struct subreg_shape { 1843 subreg_shape (machine_mode, unsigned int, machine_mode); 1844 bool operator == (const subreg_shape &) const; 1845 bool operator != (const subreg_shape &) const; 1846 unsigned int unique_id () const; 1847 1848 machine_mode inner_mode; 1849 unsigned int offset; 1850 machine_mode outer_mode; 1851 }; 1852 1853 inline 1854 subreg_shape::subreg_shape (machine_mode inner_mode_in, 1855 unsigned int offset_in, 1856 machine_mode outer_mode_in) 1857 : inner_mode (inner_mode_in), offset (offset_in), outer_mode (outer_mode_in) 1858 {} 1859 1860 inline bool 1861 subreg_shape::operator == (const subreg_shape &other) const 1862 { 1863 return (inner_mode == other.inner_mode 1864 && offset == other.offset 1865 && outer_mode == other.outer_mode); 1866 } 1867 1868 inline bool 1869 subreg_shape::operator != (const subreg_shape &other) const 1870 { 1871 return !operator == (other); 1872 } 1873 1874 /* Return an integer that uniquely identifies this shape. Structures 1875 like rtx_def assume that a mode can fit in an 8-bit bitfield and no 1876 current mode is anywhere near being 65536 bytes in size, so the 1877 id comfortably fits in an int. */ 1878 1879 inline unsigned int 1880 subreg_shape::unique_id () const 1881 { 1882 STATIC_ASSERT (MAX_MACHINE_MODE <= 256); 1883 return (int) inner_mode + ((int) outer_mode << 8) + (offset << 16); 1884 } 1885 1886 /* Return the shape of a SUBREG rtx. */ 1887 1888 static inline subreg_shape 1889 shape_of_subreg (const_rtx x) 1890 { 1891 return subreg_shape (GET_MODE (SUBREG_REG (x)), 1892 SUBREG_BYTE (x), GET_MODE (x)); 1893 } 1894 1895 /* Information about an address. This structure is supposed to be able 1896 to represent all supported target addresses. Please extend it if it 1897 is not yet general enough. */ 1898 struct address_info { 1899 /* The mode of the value being addressed, or VOIDmode if this is 1900 a load-address operation with no known address mode. */ 1901 machine_mode mode; 1902 1903 /* The address space. */ 1904 addr_space_t as; 1905 1906 /* A pointer to the top-level address. */ 1907 rtx *outer; 1908 1909 /* A pointer to the inner address, after all address mutations 1910 have been stripped from the top-level address. It can be one 1911 of the following: 1912 1913 - A {PRE,POST}_{INC,DEC} of *BASE. SEGMENT, INDEX and DISP are null. 1914 1915 - A {PRE,POST}_MODIFY of *BASE. In this case either INDEX or DISP 1916 points to the step value, depending on whether the step is variable 1917 or constant respectively. SEGMENT is null. 1918 1919 - A plain sum of the form SEGMENT + BASE + INDEX + DISP, 1920 with null fields evaluating to 0. */ 1921 rtx *inner; 1922 1923 /* Components that make up *INNER. Each one may be null or nonnull. 1924 When nonnull, their meanings are as follows: 1925 1926 - *SEGMENT is the "segment" of memory to which the address refers. 1927 This value is entirely target-specific and is only called a "segment" 1928 because that's its most typical use. It contains exactly one UNSPEC, 1929 pointed to by SEGMENT_TERM. The contents of *SEGMENT do not need 1930 reloading. 1931 1932 - *BASE is a variable expression representing a base address. 1933 It contains exactly one REG, SUBREG or MEM, pointed to by BASE_TERM. 1934 1935 - *INDEX is a variable expression representing an index value. 1936 It may be a scaled expression, such as a MULT. It has exactly 1937 one REG, SUBREG or MEM, pointed to by INDEX_TERM. 1938 1939 - *DISP is a constant, possibly mutated. DISP_TERM points to the 1940 unmutated RTX_CONST_OBJ. */ 1941 rtx *segment; 1942 rtx *base; 1943 rtx *index; 1944 rtx *disp; 1945 1946 rtx *segment_term; 1947 rtx *base_term; 1948 rtx *index_term; 1949 rtx *disp_term; 1950 1951 /* In a {PRE,POST}_MODIFY address, this points to a second copy 1952 of BASE_TERM, otherwise it is null. */ 1953 rtx *base_term2; 1954 1955 /* ADDRESS if this structure describes an address operand, MEM if 1956 it describes a MEM address. */ 1957 enum rtx_code addr_outer_code; 1958 1959 /* If BASE is nonnull, this is the code of the rtx that contains it. */ 1960 enum rtx_code base_outer_code; 1961 1962 /* True if this is an RTX_AUTOINC address. */ 1963 bool autoinc_p; 1964 }; 1965 1966 /* This is used to bundle an rtx and a mode together so that the pair 1967 can be used with the wi:: routines. If we ever put modes into rtx 1968 integer constants, this should go away and then just pass an rtx in. */ 1969 typedef std::pair <rtx, machine_mode> rtx_mode_t; 1970 1971 namespace wi 1972 { 1973 template <> 1974 struct int_traits <rtx_mode_t> 1975 { 1976 static const enum precision_type precision_type = VAR_PRECISION; 1977 static const bool host_dependent_precision = false; 1978 /* This ought to be true, except for the special case that BImode 1979 is canonicalized to STORE_FLAG_VALUE, which might be 1. */ 1980 static const bool is_sign_extended = false; 1981 static unsigned int get_precision (const rtx_mode_t &); 1982 static wi::storage_ref decompose (HOST_WIDE_INT *, unsigned int, 1983 const rtx_mode_t &); 1984 }; 1985 } 1986 1987 inline unsigned int 1988 wi::int_traits <rtx_mode_t>::get_precision (const rtx_mode_t &x) 1989 { 1990 gcc_checking_assert (x.second != BLKmode && x.second != VOIDmode); 1991 return GET_MODE_PRECISION (x.second); 1992 } 1993 1994 inline wi::storage_ref 1995 wi::int_traits <rtx_mode_t>::decompose (HOST_WIDE_INT *, 1996 unsigned int precision, 1997 const rtx_mode_t &x) 1998 { 1999 gcc_checking_assert (precision == get_precision (x)); 2000 switch (GET_CODE (x.first)) 2001 { 2002 case CONST_INT: 2003 if (precision < HOST_BITS_PER_WIDE_INT) 2004 /* Nonzero BImodes are stored as STORE_FLAG_VALUE, which on many 2005 targets is 1 rather than -1. */ 2006 gcc_checking_assert (INTVAL (x.first) 2007 == sext_hwi (INTVAL (x.first), precision) 2008 || (x.second == BImode && INTVAL (x.first) == 1)); 2009 2010 return wi::storage_ref (&INTVAL (x.first), 1, precision); 2011 2012 case CONST_WIDE_INT: 2013 return wi::storage_ref (&CONST_WIDE_INT_ELT (x.first, 0), 2014 CONST_WIDE_INT_NUNITS (x.first), precision); 2015 2016 #if TARGET_SUPPORTS_WIDE_INT == 0 2017 case CONST_DOUBLE: 2018 return wi::storage_ref (&CONST_DOUBLE_LOW (x.first), 2, precision); 2019 #endif 2020 2021 default: 2022 gcc_unreachable (); 2023 } 2024 } 2025 2026 namespace wi 2027 { 2028 hwi_with_prec shwi (HOST_WIDE_INT, machine_mode mode); 2029 wide_int min_value (machine_mode, signop); 2030 wide_int max_value (machine_mode, signop); 2031 } 2032 2033 inline wi::hwi_with_prec 2034 wi::shwi (HOST_WIDE_INT val, machine_mode mode) 2035 { 2036 return shwi (val, GET_MODE_PRECISION (mode)); 2037 } 2038 2039 /* Produce the smallest number that is represented in MODE. The precision 2040 is taken from MODE and the sign from SGN. */ 2041 inline wide_int 2042 wi::min_value (machine_mode mode, signop sgn) 2043 { 2044 return min_value (GET_MODE_PRECISION (mode), sgn); 2045 } 2046 2047 /* Produce the largest number that is represented in MODE. The precision 2048 is taken from MODE and the sign from SGN. */ 2049 inline wide_int 2050 wi::max_value (machine_mode mode, signop sgn) 2051 { 2052 return max_value (GET_MODE_PRECISION (mode), sgn); 2053 } 2054 2055 extern void init_rtlanal (void); 2056 extern int rtx_cost (rtx, enum rtx_code, int, bool); 2057 extern int address_cost (rtx, machine_mode, addr_space_t, bool); 2058 extern void get_full_rtx_cost (rtx, enum rtx_code, int, 2059 struct full_rtx_costs *); 2060 extern unsigned int subreg_lsb (const_rtx); 2061 extern unsigned int subreg_lsb_1 (machine_mode, machine_mode, 2062 unsigned int); 2063 extern unsigned int subreg_regno_offset (unsigned int, machine_mode, 2064 unsigned int, machine_mode); 2065 extern bool subreg_offset_representable_p (unsigned int, machine_mode, 2066 unsigned int, machine_mode); 2067 extern unsigned int subreg_regno (const_rtx); 2068 extern int simplify_subreg_regno (unsigned int, machine_mode, 2069 unsigned int, machine_mode); 2070 extern unsigned int subreg_nregs (const_rtx); 2071 extern unsigned int subreg_nregs_with_regno (unsigned int, const_rtx); 2072 extern unsigned HOST_WIDE_INT nonzero_bits (const_rtx, machine_mode); 2073 extern unsigned int num_sign_bit_copies (const_rtx, machine_mode); 2074 extern bool constant_pool_constant_p (rtx); 2075 extern bool truncated_to_mode (machine_mode, const_rtx); 2076 extern int low_bitmask_len (machine_mode, unsigned HOST_WIDE_INT); 2077 extern void split_double (rtx, rtx *, rtx *); 2078 extern rtx *strip_address_mutations (rtx *, enum rtx_code * = 0); 2079 extern void decompose_address (struct address_info *, rtx *, 2080 machine_mode, addr_space_t, enum rtx_code); 2081 extern void decompose_lea_address (struct address_info *, rtx *); 2082 extern void decompose_mem_address (struct address_info *, rtx); 2083 extern void update_address (struct address_info *); 2084 extern HOST_WIDE_INT get_index_scale (const struct address_info *); 2085 extern enum rtx_code get_index_code (const struct address_info *); 2086 2087 #ifndef GENERATOR_FILE 2088 /* Return the cost of SET X. SPEED_P is true if optimizing for speed 2089 rather than size. */ 2090 2091 static inline int 2092 set_rtx_cost (rtx x, bool speed_p) 2093 { 2094 return rtx_cost (x, INSN, 4, speed_p); 2095 } 2096 2097 /* Like set_rtx_cost, but return both the speed and size costs in C. */ 2098 2099 static inline void 2100 get_full_set_rtx_cost (rtx x, struct full_rtx_costs *c) 2101 { 2102 get_full_rtx_cost (x, INSN, 4, c); 2103 } 2104 2105 /* Return the cost of moving X into a register, relative to the cost 2106 of a register move. SPEED_P is true if optimizing for speed rather 2107 than size. */ 2108 2109 static inline int 2110 set_src_cost (rtx x, bool speed_p) 2111 { 2112 return rtx_cost (x, SET, 1, speed_p); 2113 } 2114 2115 /* Like set_src_cost, but return both the speed and size costs in C. */ 2116 2117 static inline void 2118 get_full_set_src_cost (rtx x, struct full_rtx_costs *c) 2119 { 2120 get_full_rtx_cost (x, SET, 1, c); 2121 } 2122 #endif 2123 2124 /* 1 if RTX is a subreg containing a reg that is already known to be 2125 sign- or zero-extended from the mode of the subreg to the mode of 2126 the reg. SUBREG_PROMOTED_UNSIGNED_P gives the signedness of the 2127 extension. 2128 2129 When used as a LHS, is means that this extension must be done 2130 when assigning to SUBREG_REG. */ 2131 2132 #define SUBREG_PROMOTED_VAR_P(RTX) \ 2133 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED", (RTX), SUBREG)->in_struct) 2134 2135 /* Valid for subregs which are SUBREG_PROMOTED_VAR_P(). In that case 2136 this gives the necessary extensions: 2137 0 - signed (SPR_SIGNED) 2138 1 - normal unsigned (SPR_UNSIGNED) 2139 2 - value is both sign and unsign extended for mode 2140 (SPR_SIGNED_AND_UNSIGNED). 2141 -1 - pointer unsigned, which most often can be handled like unsigned 2142 extension, except for generating instructions where we need to 2143 emit special code (ptr_extend insns) on some architectures 2144 (SPR_POINTER). */ 2145 2146 const int SRP_POINTER = -1; 2147 const int SRP_SIGNED = 0; 2148 const int SRP_UNSIGNED = 1; 2149 const int SRP_SIGNED_AND_UNSIGNED = 2; 2150 2151 /* Sets promoted mode for SUBREG_PROMOTED_VAR_P(). */ 2152 #define SUBREG_PROMOTED_SET(RTX, VAL) \ 2153 do { \ 2154 rtx const _rtx = RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SET", \ 2155 (RTX), SUBREG); \ 2156 switch (VAL) \ 2157 { \ 2158 case SRP_POINTER: \ 2159 _rtx->volatil = 0; \ 2160 _rtx->unchanging = 0; \ 2161 break; \ 2162 case SRP_SIGNED: \ 2163 _rtx->volatil = 0; \ 2164 _rtx->unchanging = 1; \ 2165 break; \ 2166 case SRP_UNSIGNED: \ 2167 _rtx->volatil = 1; \ 2168 _rtx->unchanging = 0; \ 2169 break; \ 2170 case SRP_SIGNED_AND_UNSIGNED: \ 2171 _rtx->volatil = 1; \ 2172 _rtx->unchanging = 1; \ 2173 break; \ 2174 } \ 2175 } while (0) 2176 2177 /* Gets the value stored in promoted mode for SUBREG_PROMOTED_VAR_P(), 2178 including SRP_SIGNED_AND_UNSIGNED if promoted for 2179 both signed and unsigned. */ 2180 #define SUBREG_PROMOTED_GET(RTX) \ 2181 (2 * (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_GET", (RTX), SUBREG)->volatil)\ 2182 + (RTX)->unchanging - 1) 2183 2184 /* Returns sign of promoted mode for SUBREG_PROMOTED_VAR_P(). */ 2185 #define SUBREG_PROMOTED_SIGN(RTX) \ 2186 ((RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGN", (RTX), SUBREG)->volatil) ? 1\ 2187 : (RTX)->unchanging - 1) 2188 2189 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted 2190 for SIGNED type. */ 2191 #define SUBREG_PROMOTED_SIGNED_P(RTX) \ 2192 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_SIGNED_P", (RTX), SUBREG)->unchanging) 2193 2194 /* Predicate to check if RTX of SUBREG_PROMOTED_VAR_P() is promoted 2195 for UNSIGNED type. */ 2196 #define SUBREG_PROMOTED_UNSIGNED_P(RTX) \ 2197 (RTL_FLAG_CHECK1 ("SUBREG_PROMOTED_UNSIGNED_P", (RTX), SUBREG)->volatil) 2198 2199 /* Checks if RTX of SUBREG_PROMOTED_VAR_P() is promoted for given SIGN. */ 2200 #define SUBREG_CHECK_PROMOTED_SIGN(RTX, SIGN) \ 2201 ((SIGN) == SRP_POINTER ? SUBREG_PROMOTED_GET (RTX) == SRP_POINTER \ 2202 : (SIGN) == SRP_SIGNED ? SUBREG_PROMOTED_SIGNED_P (RTX) \ 2203 : SUBREG_PROMOTED_UNSIGNED_P (RTX)) 2204 2205 /* True if the subreg was generated by LRA for reload insns. Such 2206 subregs are valid only during LRA. */ 2207 #define LRA_SUBREG_P(RTX) \ 2208 (RTL_FLAG_CHECK1 ("LRA_SUBREG_P", (RTX), SUBREG)->jump) 2209 2210 /* True if call is instrumented by Pointer Bounds Checker. */ 2211 #define CALL_EXPR_WITH_BOUNDS_P(RTX) \ 2212 (RTL_FLAG_CHECK1 ("CALL_EXPR_WITH_BOUNDS_P", (RTX), CALL)->jump) 2213 2214 /* Access various components of an ASM_OPERANDS rtx. */ 2215 2216 #define ASM_OPERANDS_TEMPLATE(RTX) XCSTR (RTX, 0, ASM_OPERANDS) 2217 #define ASM_OPERANDS_OUTPUT_CONSTRAINT(RTX) XCSTR (RTX, 1, ASM_OPERANDS) 2218 #define ASM_OPERANDS_OUTPUT_IDX(RTX) XCINT (RTX, 2, ASM_OPERANDS) 2219 #define ASM_OPERANDS_INPUT_VEC(RTX) XCVEC (RTX, 3, ASM_OPERANDS) 2220 #define ASM_OPERANDS_INPUT_CONSTRAINT_VEC(RTX) XCVEC (RTX, 4, ASM_OPERANDS) 2221 #define ASM_OPERANDS_INPUT(RTX, N) XCVECEXP (RTX, 3, N, ASM_OPERANDS) 2222 #define ASM_OPERANDS_INPUT_LENGTH(RTX) XCVECLEN (RTX, 3, ASM_OPERANDS) 2223 #define ASM_OPERANDS_INPUT_CONSTRAINT_EXP(RTX, N) \ 2224 XCVECEXP (RTX, 4, N, ASM_OPERANDS) 2225 #define ASM_OPERANDS_INPUT_CONSTRAINT(RTX, N) \ 2226 XSTR (XCVECEXP (RTX, 4, N, ASM_OPERANDS), 0) 2227 #define ASM_OPERANDS_INPUT_MODE(RTX, N) \ 2228 GET_MODE (XCVECEXP (RTX, 4, N, ASM_OPERANDS)) 2229 #define ASM_OPERANDS_LABEL_VEC(RTX) XCVEC (RTX, 5, ASM_OPERANDS) 2230 #define ASM_OPERANDS_LABEL_LENGTH(RTX) XCVECLEN (RTX, 5, ASM_OPERANDS) 2231 #define ASM_OPERANDS_LABEL(RTX, N) XCVECEXP (RTX, 5, N, ASM_OPERANDS) 2232 #define ASM_OPERANDS_SOURCE_LOCATION(RTX) XCUINT (RTX, 6, ASM_OPERANDS) 2233 #define ASM_INPUT_SOURCE_LOCATION(RTX) XCUINT (RTX, 1, ASM_INPUT) 2234 2235 /* 1 if RTX is a mem that is statically allocated in read-only memory. */ 2236 #define MEM_READONLY_P(RTX) \ 2237 (RTL_FLAG_CHECK1 ("MEM_READONLY_P", (RTX), MEM)->unchanging) 2238 2239 /* 1 if RTX is a mem and we should keep the alias set for this mem 2240 unchanged when we access a component. Set to 1, or example, when we 2241 are already in a non-addressable component of an aggregate. */ 2242 #define MEM_KEEP_ALIAS_SET_P(RTX) \ 2243 (RTL_FLAG_CHECK1 ("MEM_KEEP_ALIAS_SET_P", (RTX), MEM)->jump) 2244 2245 /* 1 if RTX is a mem or asm_operand for a volatile reference. */ 2246 #define MEM_VOLATILE_P(RTX) \ 2247 (RTL_FLAG_CHECK3 ("MEM_VOLATILE_P", (RTX), MEM, ASM_OPERANDS, \ 2248 ASM_INPUT)->volatil) 2249 2250 /* 1 if RTX is a mem that cannot trap. */ 2251 #define MEM_NOTRAP_P(RTX) \ 2252 (RTL_FLAG_CHECK1 ("MEM_NOTRAP_P", (RTX), MEM)->call) 2253 2254 /* The memory attribute block. We provide access macros for each value 2255 in the block and provide defaults if none specified. */ 2256 #define MEM_ATTRS(RTX) X0MEMATTR (RTX, 1) 2257 2258 /* The register attribute block. We provide access macros for each value 2259 in the block and provide defaults if none specified. */ 2260 #define REG_ATTRS(RTX) X0REGATTR (RTX, 1) 2261 2262 #ifndef GENERATOR_FILE 2263 /* For a MEM rtx, the alias set. If 0, this MEM is not in any alias 2264 set, and may alias anything. Otherwise, the MEM can only alias 2265 MEMs in a conflicting alias set. This value is set in a 2266 language-dependent manner in the front-end, and should not be 2267 altered in the back-end. These set numbers are tested with 2268 alias_sets_conflict_p. */ 2269 #define MEM_ALIAS_SET(RTX) (get_mem_attrs (RTX)->alias) 2270 2271 /* For a MEM rtx, the decl it is known to refer to, if it is known to 2272 refer to part of a DECL. It may also be a COMPONENT_REF. */ 2273 #define MEM_EXPR(RTX) (get_mem_attrs (RTX)->expr) 2274 2275 /* For a MEM rtx, true if its MEM_OFFSET is known. */ 2276 #define MEM_OFFSET_KNOWN_P(RTX) (get_mem_attrs (RTX)->offset_known_p) 2277 2278 /* For a MEM rtx, the offset from the start of MEM_EXPR. */ 2279 #define MEM_OFFSET(RTX) (get_mem_attrs (RTX)->offset) 2280 2281 /* For a MEM rtx, the address space. */ 2282 #define MEM_ADDR_SPACE(RTX) (get_mem_attrs (RTX)->addrspace) 2283 2284 /* For a MEM rtx, true if its MEM_SIZE is known. */ 2285 #define MEM_SIZE_KNOWN_P(RTX) (get_mem_attrs (RTX)->size_known_p) 2286 2287 /* For a MEM rtx, the size in bytes of the MEM. */ 2288 #define MEM_SIZE(RTX) (get_mem_attrs (RTX)->size) 2289 2290 /* For a MEM rtx, the alignment in bits. We can use the alignment of the 2291 mode as a default when STRICT_ALIGNMENT, but not if not. */ 2292 #define MEM_ALIGN(RTX) (get_mem_attrs (RTX)->align) 2293 #else 2294 #define MEM_ADDR_SPACE(RTX) ADDR_SPACE_GENERIC 2295 #endif 2296 2297 /* For a REG rtx, the decl it is known to refer to, if it is known to 2298 refer to part of a DECL. */ 2299 #define REG_EXPR(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->decl) 2300 2301 /* For a REG rtx, the offset from the start of REG_EXPR, if known, as an 2302 HOST_WIDE_INT. */ 2303 #define REG_OFFSET(RTX) (REG_ATTRS (RTX) == 0 ? 0 : REG_ATTRS (RTX)->offset) 2304 2305 /* Copy the attributes that apply to memory locations from RHS to LHS. */ 2306 #define MEM_COPY_ATTRIBUTES(LHS, RHS) \ 2307 (MEM_VOLATILE_P (LHS) = MEM_VOLATILE_P (RHS), \ 2308 MEM_NOTRAP_P (LHS) = MEM_NOTRAP_P (RHS), \ 2309 MEM_READONLY_P (LHS) = MEM_READONLY_P (RHS), \ 2310 MEM_KEEP_ALIAS_SET_P (LHS) = MEM_KEEP_ALIAS_SET_P (RHS), \ 2311 MEM_POINTER (LHS) = MEM_POINTER (RHS), \ 2312 MEM_ATTRS (LHS) = MEM_ATTRS (RHS)) 2313 2314 /* 1 if RTX is a label_ref for a nonlocal label. */ 2315 /* Likewise in an expr_list for a REG_LABEL_OPERAND or 2316 REG_LABEL_TARGET note. */ 2317 #define LABEL_REF_NONLOCAL_P(RTX) \ 2318 (RTL_FLAG_CHECK1 ("LABEL_REF_NONLOCAL_P", (RTX), LABEL_REF)->volatil) 2319 2320 /* 1 if RTX is a code_label that should always be considered to be needed. */ 2321 #define LABEL_PRESERVE_P(RTX) \ 2322 (RTL_FLAG_CHECK2 ("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) 2323 2324 /* During sched, 1 if RTX is an insn that must be scheduled together 2325 with the preceding insn. */ 2326 #define SCHED_GROUP_P(RTX) \ 2327 (RTL_FLAG_CHECK4 ("SCHED_GROUP_P", (RTX), DEBUG_INSN, INSN, \ 2328 JUMP_INSN, CALL_INSN)->in_struct) 2329 2330 /* For a SET rtx, SET_DEST is the place that is set 2331 and SET_SRC is the value it is set to. */ 2332 #define SET_DEST(RTX) XC2EXP (RTX, 0, SET, CLOBBER) 2333 #define SET_SRC(RTX) XCEXP (RTX, 1, SET) 2334 #define SET_IS_RETURN_P(RTX) \ 2335 (RTL_FLAG_CHECK1 ("SET_IS_RETURN_P", (RTX), SET)->jump) 2336 2337 /* For a TRAP_IF rtx, TRAP_CONDITION is an expression. */ 2338 #define TRAP_CONDITION(RTX) XCEXP (RTX, 0, TRAP_IF) 2339 #define TRAP_CODE(RTX) XCEXP (RTX, 1, TRAP_IF) 2340 2341 /* For a COND_EXEC rtx, COND_EXEC_TEST is the condition to base 2342 conditionally executing the code on, COND_EXEC_CODE is the code 2343 to execute if the condition is true. */ 2344 #define COND_EXEC_TEST(RTX) XCEXP (RTX, 0, COND_EXEC) 2345 #define COND_EXEC_CODE(RTX) XCEXP (RTX, 1, COND_EXEC) 2346 2347 /* 1 if RTX is a symbol_ref that addresses this function's rtl 2348 constants pool. */ 2349 #define CONSTANT_POOL_ADDRESS_P(RTX) \ 2350 (RTL_FLAG_CHECK1 ("CONSTANT_POOL_ADDRESS_P", (RTX), SYMBOL_REF)->unchanging) 2351 2352 /* 1 if RTX is a symbol_ref that addresses a value in the file's 2353 tree constant pool. This information is private to varasm.c. */ 2354 #define TREE_CONSTANT_POOL_ADDRESS_P(RTX) \ 2355 (RTL_FLAG_CHECK1 ("TREE_CONSTANT_POOL_ADDRESS_P", \ 2356 (RTX), SYMBOL_REF)->frame_related) 2357 2358 /* Used if RTX is a symbol_ref, for machine-specific purposes. */ 2359 #define SYMBOL_REF_FLAG(RTX) \ 2360 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAG", (RTX), SYMBOL_REF)->volatil) 2361 2362 /* 1 if RTX is a symbol_ref that has been the library function in 2363 emit_library_call. */ 2364 #define SYMBOL_REF_USED(RTX) \ 2365 (RTL_FLAG_CHECK1 ("SYMBOL_REF_USED", (RTX), SYMBOL_REF)->used) 2366 2367 /* 1 if RTX is a symbol_ref for a weak symbol. */ 2368 #define SYMBOL_REF_WEAK(RTX) \ 2369 (RTL_FLAG_CHECK1 ("SYMBOL_REF_WEAK", (RTX), SYMBOL_REF)->return_val) 2370 2371 /* A pointer attached to the SYMBOL_REF; either SYMBOL_REF_DECL or 2372 SYMBOL_REF_CONSTANT. */ 2373 #define SYMBOL_REF_DATA(RTX) X0ANY ((RTX), 1) 2374 2375 /* Set RTX's SYMBOL_REF_DECL to DECL. RTX must not be a constant 2376 pool symbol. */ 2377 #define SET_SYMBOL_REF_DECL(RTX, DECL) \ 2378 (gcc_assert (!CONSTANT_POOL_ADDRESS_P (RTX)), X0TREE ((RTX), 1) = (DECL)) 2379 2380 /* The tree (decl or constant) associated with the symbol, or null. */ 2381 #define SYMBOL_REF_DECL(RTX) \ 2382 (CONSTANT_POOL_ADDRESS_P (RTX) ? NULL : X0TREE ((RTX), 1)) 2383 2384 /* Set RTX's SYMBOL_REF_CONSTANT to C. RTX must be a constant pool symbol. */ 2385 #define SET_SYMBOL_REF_CONSTANT(RTX, C) \ 2386 (gcc_assert (CONSTANT_POOL_ADDRESS_P (RTX)), X0CONSTANT ((RTX), 1) = (C)) 2387 2388 /* The rtx constant pool entry for a symbol, or null. */ 2389 #define SYMBOL_REF_CONSTANT(RTX) \ 2390 (CONSTANT_POOL_ADDRESS_P (RTX) ? X0CONSTANT ((RTX), 1) : NULL) 2391 2392 /* A set of flags on a symbol_ref that are, in some respects, redundant with 2393 information derivable from the tree decl associated with this symbol. 2394 Except that we build a *lot* of SYMBOL_REFs that aren't associated with a 2395 decl. In some cases this is a bug. But beyond that, it's nice to cache 2396 this information to avoid recomputing it. Finally, this allows space for 2397 the target to store more than one bit of information, as with 2398 SYMBOL_REF_FLAG. */ 2399 #define SYMBOL_REF_FLAGS(RTX) \ 2400 (RTL_FLAG_CHECK1 ("SYMBOL_REF_FLAGS", (RTX), SYMBOL_REF) \ 2401 ->u2.symbol_ref_flags) 2402 2403 /* These flags are common enough to be defined for all targets. They 2404 are computed by the default version of targetm.encode_section_info. */ 2405 2406 /* Set if this symbol is a function. */ 2407 #define SYMBOL_FLAG_FUNCTION (1 << 0) 2408 #define SYMBOL_REF_FUNCTION_P(RTX) \ 2409 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_FUNCTION) != 0) 2410 /* Set if targetm.binds_local_p is true. */ 2411 #define SYMBOL_FLAG_LOCAL (1 << 1) 2412 #define SYMBOL_REF_LOCAL_P(RTX) \ 2413 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_LOCAL) != 0) 2414 /* Set if targetm.in_small_data_p is true. */ 2415 #define SYMBOL_FLAG_SMALL (1 << 2) 2416 #define SYMBOL_REF_SMALL_P(RTX) \ 2417 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_SMALL) != 0) 2418 /* The three-bit field at [5:3] is true for TLS variables; use 2419 SYMBOL_REF_TLS_MODEL to extract the field as an enum tls_model. */ 2420 #define SYMBOL_FLAG_TLS_SHIFT 3 2421 #define SYMBOL_REF_TLS_MODEL(RTX) \ 2422 ((enum tls_model) ((SYMBOL_REF_FLAGS (RTX) >> SYMBOL_FLAG_TLS_SHIFT) & 7)) 2423 /* Set if this symbol is not defined in this translation unit. */ 2424 #define SYMBOL_FLAG_EXTERNAL (1 << 6) 2425 #define SYMBOL_REF_EXTERNAL_P(RTX) \ 2426 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_EXTERNAL) != 0) 2427 /* Set if this symbol has a block_symbol structure associated with it. */ 2428 #define SYMBOL_FLAG_HAS_BLOCK_INFO (1 << 7) 2429 #define SYMBOL_REF_HAS_BLOCK_INFO_P(RTX) \ 2430 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_HAS_BLOCK_INFO) != 0) 2431 /* Set if this symbol is a section anchor. SYMBOL_REF_ANCHOR_P implies 2432 SYMBOL_REF_HAS_BLOCK_INFO_P. */ 2433 #define SYMBOL_FLAG_ANCHOR (1 << 8) 2434 #define SYMBOL_REF_ANCHOR_P(RTX) \ 2435 ((SYMBOL_REF_FLAGS (RTX) & SYMBOL_FLAG_ANCHOR) != 0) 2436 2437 /* Subsequent bits are available for the target to use. */ 2438 #define SYMBOL_FLAG_MACH_DEP_SHIFT 9 2439 #define SYMBOL_FLAG_MACH_DEP (1 << SYMBOL_FLAG_MACH_DEP_SHIFT) 2440 2441 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the object_block 2442 structure to which the symbol belongs, or NULL if it has not been 2443 assigned a block. */ 2444 #define SYMBOL_REF_BLOCK(RTX) (BLOCK_SYMBOL_CHECK (RTX)->block) 2445 2446 /* If SYMBOL_REF_HAS_BLOCK_INFO_P (RTX), this is the offset of RTX from 2447 the first object in SYMBOL_REF_BLOCK (RTX). The value is negative if 2448 RTX has not yet been assigned to a block, or it has not been given an 2449 offset within that block. */ 2450 #define SYMBOL_REF_BLOCK_OFFSET(RTX) (BLOCK_SYMBOL_CHECK (RTX)->offset) 2451 2452 /* True if RTX is flagged to be a scheduling barrier. */ 2453 #define PREFETCH_SCHEDULE_BARRIER_P(RTX) \ 2454 (RTL_FLAG_CHECK1 ("PREFETCH_SCHEDULE_BARRIER_P", (RTX), PREFETCH)->volatil) 2455 2456 /* Indicate whether the machine has any sort of auto increment addressing. 2457 If not, we can avoid checking for REG_INC notes. */ 2458 2459 #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \ 2460 || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT) \ 2461 || defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_POST_MODIFY_DISP) \ 2462 || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_REG)) 2463 #define AUTO_INC_DEC 2464 #endif 2465 2466 /* Define a macro to look for REG_INC notes, 2467 but save time on machines where they never exist. */ 2468 2469 #ifdef AUTO_INC_DEC 2470 #define FIND_REG_INC_NOTE(INSN, REG) \ 2471 ((REG) != NULL_RTX && REG_P ((REG)) \ 2472 ? find_regno_note ((INSN), REG_INC, REGNO (REG)) \ 2473 : find_reg_note ((INSN), REG_INC, (REG))) 2474 #else 2475 #define FIND_REG_INC_NOTE(INSN, REG) 0 2476 #endif 2477 2478 #ifndef HAVE_PRE_INCREMENT 2479 #define HAVE_PRE_INCREMENT 0 2480 #endif 2481 2482 #ifndef HAVE_PRE_DECREMENT 2483 #define HAVE_PRE_DECREMENT 0 2484 #endif 2485 2486 #ifndef HAVE_POST_INCREMENT 2487 #define HAVE_POST_INCREMENT 0 2488 #endif 2489 2490 #ifndef HAVE_POST_DECREMENT 2491 #define HAVE_POST_DECREMENT 0 2492 #endif 2493 2494 #ifndef HAVE_POST_MODIFY_DISP 2495 #define HAVE_POST_MODIFY_DISP 0 2496 #endif 2497 2498 #ifndef HAVE_POST_MODIFY_REG 2499 #define HAVE_POST_MODIFY_REG 0 2500 #endif 2501 2502 #ifndef HAVE_PRE_MODIFY_DISP 2503 #define HAVE_PRE_MODIFY_DISP 0 2504 #endif 2505 2506 #ifndef HAVE_PRE_MODIFY_REG 2507 #define HAVE_PRE_MODIFY_REG 0 2508 #endif 2509 2510 2511 /* Some architectures do not have complete pre/post increment/decrement 2512 instruction sets, or only move some modes efficiently. These macros 2513 allow us to tune autoincrement generation. */ 2514 2515 #ifndef USE_LOAD_POST_INCREMENT 2516 #define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 2517 #endif 2518 2519 #ifndef USE_LOAD_POST_DECREMENT 2520 #define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 2521 #endif 2522 2523 #ifndef USE_LOAD_PRE_INCREMENT 2524 #define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 2525 #endif 2526 2527 #ifndef USE_LOAD_PRE_DECREMENT 2528 #define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 2529 #endif 2530 2531 #ifndef USE_STORE_POST_INCREMENT 2532 #define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT 2533 #endif 2534 2535 #ifndef USE_STORE_POST_DECREMENT 2536 #define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT 2537 #endif 2538 2539 #ifndef USE_STORE_PRE_INCREMENT 2540 #define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT 2541 #endif 2542 2543 #ifndef USE_STORE_PRE_DECREMENT 2544 #define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT 2545 #endif 2546 2547 /* Nonzero when we are generating CONCATs. */ 2548 extern int generating_concat_p; 2549 2550 /* Nonzero when we are expanding trees to RTL. */ 2551 extern int currently_expanding_to_rtl; 2552 2553 /* Generally useful functions. */ 2554 2555 /* In explow.c */ 2556 extern HOST_WIDE_INT trunc_int_for_mode (HOST_WIDE_INT, machine_mode); 2557 extern rtx plus_constant (machine_mode, rtx, HOST_WIDE_INT, bool = false); 2558 2559 /* In rtl.c */ 2560 extern rtx rtx_alloc_stat (RTX_CODE MEM_STAT_DECL); 2561 #define rtx_alloc(c) rtx_alloc_stat (c MEM_STAT_INFO) 2562 extern rtx rtx_alloc_stat_v (RTX_CODE MEM_STAT_DECL, int); 2563 #define rtx_alloc_v(c, SZ) rtx_alloc_stat_v (c MEM_STAT_INFO, SZ) 2564 #define const_wide_int_alloc(NWORDS) \ 2565 rtx_alloc_v (CONST_WIDE_INT, \ 2566 (sizeof (struct hwivec_def) \ 2567 + ((NWORDS)-1) * sizeof (HOST_WIDE_INT))) \ 2568 2569 extern rtvec rtvec_alloc (int); 2570 extern rtvec shallow_copy_rtvec (rtvec); 2571 extern bool shared_const_p (const_rtx); 2572 extern rtx copy_rtx (rtx); 2573 extern void dump_rtx_statistics (void); 2574 2575 /* In emit-rtl.c */ 2576 extern rtx copy_rtx_if_shared (rtx); 2577 2578 /* In rtl.c */ 2579 extern unsigned int rtx_size (const_rtx); 2580 extern rtx shallow_copy_rtx_stat (const_rtx MEM_STAT_DECL); 2581 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO) 2582 extern int rtx_equal_p (const_rtx, const_rtx); 2583 2584 /* In emit-rtl.c */ 2585 extern rtvec gen_rtvec_v (int, rtx *); 2586 extern rtvec gen_rtvec_v (int, rtx_insn **); 2587 extern rtx gen_reg_rtx (machine_mode); 2588 extern rtx gen_rtx_REG_offset (rtx, machine_mode, unsigned int, int); 2589 extern rtx gen_reg_rtx_offset (rtx, machine_mode, int); 2590 extern rtx gen_reg_rtx_and_attrs (rtx); 2591 extern rtx_code_label *gen_label_rtx (void); 2592 extern rtx gen_lowpart_common (machine_mode, rtx); 2593 2594 /* In cse.c */ 2595 extern rtx gen_lowpart_if_possible (machine_mode, rtx); 2596 2597 /* In emit-rtl.c */ 2598 extern rtx gen_highpart (machine_mode, rtx); 2599 extern rtx gen_highpart_mode (machine_mode, machine_mode, rtx); 2600 extern rtx operand_subword (rtx, unsigned int, int, machine_mode); 2601 2602 /* In emit-rtl.c */ 2603 extern rtx operand_subword_force (rtx, unsigned int, machine_mode); 2604 extern bool paradoxical_subreg_p (const_rtx); 2605 extern int subreg_lowpart_p (const_rtx); 2606 extern unsigned int subreg_lowpart_offset (machine_mode, 2607 machine_mode); 2608 extern unsigned int subreg_highpart_offset (machine_mode, 2609 machine_mode); 2610 extern int byte_lowpart_offset (machine_mode, machine_mode); 2611 extern rtx make_safe_from (rtx, rtx); 2612 extern rtx convert_memory_address_addr_space_1 (machine_mode, rtx, 2613 addr_space_t, bool, bool); 2614 extern rtx convert_memory_address_addr_space (machine_mode, rtx, 2615 addr_space_t); 2616 #define convert_memory_address(to_mode,x) \ 2617 convert_memory_address_addr_space ((to_mode), (x), ADDR_SPACE_GENERIC) 2618 extern const char *get_insn_name (int); 2619 extern rtx_insn *get_last_insn_anywhere (void); 2620 extern rtx_insn *get_first_nonnote_insn (void); 2621 extern rtx_insn *get_last_nonnote_insn (void); 2622 extern void start_sequence (void); 2623 extern void push_to_sequence (rtx_insn *); 2624 extern void push_to_sequence2 (rtx_insn *, rtx_insn *); 2625 extern void end_sequence (void); 2626 #if TARGET_SUPPORTS_WIDE_INT == 0 2627 extern double_int rtx_to_double_int (const_rtx); 2628 #endif 2629 extern void cwi_output_hex (FILE *, const_rtx); 2630 #ifndef GENERATOR_FILE 2631 extern rtx immed_wide_int_const (const wide_int_ref &, machine_mode); 2632 #endif 2633 #if TARGET_SUPPORTS_WIDE_INT == 0 2634 extern rtx immed_double_const (HOST_WIDE_INT, HOST_WIDE_INT, 2635 machine_mode); 2636 #endif 2637 2638 /* In loop-iv.c */ 2639 2640 extern rtx lowpart_subreg (machine_mode, rtx, machine_mode); 2641 2642 /* In varasm.c */ 2643 extern rtx force_const_mem (machine_mode, rtx); 2644 2645 /* In varasm.c */ 2646 2647 struct function; 2648 extern rtx get_pool_constant (const_rtx); 2649 extern rtx get_pool_constant_mark (rtx, bool *); 2650 extern machine_mode get_pool_mode (const_rtx); 2651 extern rtx simplify_subtraction (rtx); 2652 extern void decide_function_section (tree); 2653 2654 /* In emit-rtl.c */ 2655 extern rtx_insn *emit_insn_before (rtx, rtx); 2656 extern rtx_insn *emit_insn_before_noloc (rtx, rtx_insn *, basic_block); 2657 extern rtx_insn *emit_insn_before_setloc (rtx, rtx_insn *, int); 2658 extern rtx_insn *emit_jump_insn_before (rtx, rtx); 2659 extern rtx_insn *emit_jump_insn_before_noloc (rtx, rtx_insn *); 2660 extern rtx_insn *emit_jump_insn_before_setloc (rtx, rtx_insn *, int); 2661 extern rtx_insn *emit_call_insn_before (rtx, rtx_insn *); 2662 extern rtx_insn *emit_call_insn_before_noloc (rtx, rtx_insn *); 2663 extern rtx_insn *emit_call_insn_before_setloc (rtx, rtx_insn *, int); 2664 extern rtx_insn *emit_debug_insn_before (rtx, rtx); 2665 extern rtx_insn *emit_debug_insn_before_noloc (rtx, rtx); 2666 extern rtx_insn *emit_debug_insn_before_setloc (rtx, rtx, int); 2667 extern rtx_barrier *emit_barrier_before (rtx); 2668 extern rtx_insn *emit_label_before (rtx, rtx_insn *); 2669 extern rtx_note *emit_note_before (enum insn_note, rtx); 2670 extern rtx_insn *emit_insn_after (rtx, rtx); 2671 extern rtx_insn *emit_insn_after_noloc (rtx, rtx, basic_block); 2672 extern rtx_insn *emit_insn_after_setloc (rtx, rtx, int); 2673 extern rtx_insn *emit_jump_insn_after (rtx, rtx); 2674 extern rtx_insn *emit_jump_insn_after_noloc (rtx, rtx); 2675 extern rtx_insn *emit_jump_insn_after_setloc (rtx, rtx, int); 2676 extern rtx_insn *emit_call_insn_after (rtx, rtx); 2677 extern rtx_insn *emit_call_insn_after_noloc (rtx, rtx); 2678 extern rtx_insn *emit_call_insn_after_setloc (rtx, rtx, int); 2679 extern rtx_insn *emit_debug_insn_after (rtx, rtx); 2680 extern rtx_insn *emit_debug_insn_after_noloc (rtx, rtx); 2681 extern rtx_insn *emit_debug_insn_after_setloc (rtx, rtx, int); 2682 extern rtx_barrier *emit_barrier_after (rtx); 2683 extern rtx_insn *emit_label_after (rtx, rtx_insn *); 2684 extern rtx_note *emit_note_after (enum insn_note, rtx); 2685 extern rtx_insn *emit_insn (rtx); 2686 extern rtx_insn *emit_debug_insn (rtx); 2687 extern rtx_insn *emit_jump_insn (rtx); 2688 extern rtx_insn *emit_call_insn (rtx); 2689 extern rtx_insn *emit_label (rtx); 2690 extern rtx_jump_table_data *emit_jump_table_data (rtx); 2691 extern rtx_barrier *emit_barrier (void); 2692 extern rtx_note *emit_note (enum insn_note); 2693 extern rtx_note *emit_note_copy (rtx_note *); 2694 extern rtx_insn *gen_clobber (rtx); 2695 extern rtx_insn *emit_clobber (rtx); 2696 extern rtx_insn *gen_use (rtx); 2697 extern rtx_insn *emit_use (rtx); 2698 extern rtx_insn *make_insn_raw (rtx); 2699 extern void add_function_usage_to (rtx, rtx); 2700 extern rtx_call_insn *last_call_insn (void); 2701 extern rtx_insn *previous_insn (rtx_insn *); 2702 extern rtx_insn *next_insn (rtx_insn *); 2703 extern rtx_insn *prev_nonnote_insn (rtx); 2704 extern rtx_insn *prev_nonnote_insn_bb (rtx); 2705 extern rtx_insn *next_nonnote_insn (rtx); 2706 extern rtx_insn *next_nonnote_insn_bb (rtx_insn *); 2707 extern rtx_insn *prev_nondebug_insn (rtx); 2708 extern rtx_insn *next_nondebug_insn (rtx); 2709 extern rtx_insn *prev_nonnote_nondebug_insn (rtx); 2710 extern rtx_insn *next_nonnote_nondebug_insn (rtx); 2711 extern rtx_insn *prev_real_insn (rtx); 2712 extern rtx_insn *next_real_insn (rtx); 2713 extern rtx_insn *prev_active_insn (rtx); 2714 extern rtx_insn *next_active_insn (rtx); 2715 extern int active_insn_p (const_rtx); 2716 extern rtx_insn *next_cc0_user (rtx); 2717 extern rtx_insn *prev_cc0_setter (rtx); 2718 2719 /* In emit-rtl.c */ 2720 extern int insn_line (const rtx_insn *); 2721 extern const char * insn_file (const rtx_insn *); 2722 extern tree insn_scope (const rtx_insn *); 2723 extern expanded_location insn_location (const rtx_insn *); 2724 extern location_t prologue_location, epilogue_location; 2725 2726 /* In jump.c */ 2727 extern enum rtx_code reverse_condition (enum rtx_code); 2728 extern enum rtx_code reverse_condition_maybe_unordered (enum rtx_code); 2729 extern enum rtx_code swap_condition (enum rtx_code); 2730 extern enum rtx_code unsigned_condition (enum rtx_code); 2731 extern enum rtx_code signed_condition (enum rtx_code); 2732 extern void mark_jump_label (rtx, rtx_insn *, int); 2733 2734 /* In jump.c */ 2735 extern rtx_insn *delete_related_insns (rtx); 2736 2737 /* In recog.c */ 2738 extern rtx *find_constant_term_loc (rtx *); 2739 2740 /* In emit-rtl.c */ 2741 extern rtx_insn *try_split (rtx, rtx, int); 2742 extern int split_branch_probability; 2743 2744 /* In unknown file */ 2745 extern rtx split_insns (rtx, rtx); 2746 2747 /* In simplify-rtx.c */ 2748 extern rtx simplify_const_unary_operation (enum rtx_code, machine_mode, 2749 rtx, machine_mode); 2750 extern rtx simplify_unary_operation (enum rtx_code, machine_mode, rtx, 2751 machine_mode); 2752 extern rtx simplify_const_binary_operation (enum rtx_code, machine_mode, 2753 rtx, rtx); 2754 extern rtx simplify_binary_operation (enum rtx_code, machine_mode, rtx, 2755 rtx); 2756 extern rtx simplify_ternary_operation (enum rtx_code, machine_mode, 2757 machine_mode, rtx, rtx, rtx); 2758 extern rtx simplify_const_relational_operation (enum rtx_code, 2759 machine_mode, rtx, rtx); 2760 extern rtx simplify_relational_operation (enum rtx_code, machine_mode, 2761 machine_mode, rtx, rtx); 2762 extern rtx simplify_gen_binary (enum rtx_code, machine_mode, rtx, rtx); 2763 extern rtx simplify_gen_unary (enum rtx_code, machine_mode, rtx, 2764 machine_mode); 2765 extern rtx simplify_gen_ternary (enum rtx_code, machine_mode, 2766 machine_mode, rtx, rtx, rtx); 2767 extern rtx simplify_gen_relational (enum rtx_code, machine_mode, 2768 machine_mode, rtx, rtx); 2769 extern rtx simplify_subreg (machine_mode, rtx, machine_mode, 2770 unsigned int); 2771 extern rtx simplify_gen_subreg (machine_mode, rtx, machine_mode, 2772 unsigned int); 2773 extern rtx simplify_replace_fn_rtx (rtx, const_rtx, 2774 rtx (*fn) (rtx, const_rtx, void *), void *); 2775 extern rtx simplify_replace_rtx (rtx, const_rtx, rtx); 2776 extern rtx simplify_rtx (const_rtx); 2777 extern rtx avoid_constant_pool_reference (rtx); 2778 extern rtx delegitimize_mem_from_attrs (rtx); 2779 extern bool mode_signbit_p (machine_mode, const_rtx); 2780 extern bool val_signbit_p (machine_mode, unsigned HOST_WIDE_INT); 2781 extern bool val_signbit_known_set_p (machine_mode, 2782 unsigned HOST_WIDE_INT); 2783 extern bool val_signbit_known_clear_p (machine_mode, 2784 unsigned HOST_WIDE_INT); 2785 2786 /* In reginfo.c */ 2787 extern machine_mode choose_hard_reg_mode (unsigned int, unsigned int, 2788 bool); 2789 #ifdef HARD_CONST 2790 extern const HARD_REG_SET &simplifiable_subregs (const subreg_shape &); 2791 #endif 2792 2793 /* In emit-rtl.c */ 2794 extern rtx set_for_reg_notes (rtx); 2795 extern rtx set_unique_reg_note (rtx, enum reg_note, rtx); 2796 extern rtx set_dst_reg_note (rtx, enum reg_note, rtx, rtx); 2797 extern void set_insn_deleted (rtx); 2798 2799 /* Functions in rtlanal.c */ 2800 2801 extern rtx single_set_2 (const rtx_insn *, const_rtx); 2802 2803 /* Handle the cheap and common cases inline for performance. */ 2804 2805 inline rtx single_set (const rtx_insn *insn) 2806 { 2807 if (!INSN_P (insn)) 2808 return NULL_RTX; 2809 2810 if (GET_CODE (PATTERN (insn)) == SET) 2811 return PATTERN (insn); 2812 2813 /* Defer to the more expensive case. */ 2814 return single_set_2 (insn, PATTERN (insn)); 2815 } 2816 2817 extern machine_mode get_address_mode (rtx mem); 2818 extern int rtx_addr_can_trap_p (const_rtx); 2819 extern bool nonzero_address_p (const_rtx); 2820 extern int rtx_unstable_p (const_rtx); 2821 extern bool rtx_varies_p (const_rtx, bool); 2822 extern bool rtx_addr_varies_p (const_rtx, bool); 2823 extern rtx get_call_rtx_from (rtx); 2824 extern HOST_WIDE_INT get_integer_term (const_rtx); 2825 extern rtx get_related_value (const_rtx); 2826 extern bool offset_within_block_p (const_rtx, HOST_WIDE_INT); 2827 extern void split_const (rtx, rtx *, rtx *); 2828 extern bool unsigned_reg_p (rtx); 2829 extern int reg_mentioned_p (const_rtx, const_rtx); 2830 extern int count_occurrences (const_rtx, const_rtx, int); 2831 extern int reg_referenced_p (const_rtx, const_rtx); 2832 extern int reg_used_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2833 extern int reg_set_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2834 extern int commutative_operand_precedence (rtx); 2835 extern bool swap_commutative_operands_p (rtx, rtx); 2836 extern int modified_between_p (const_rtx, const rtx_insn *, const rtx_insn *); 2837 extern int no_labels_between_p (const rtx_insn *, const rtx_insn *); 2838 extern int modified_in_p (const_rtx, const_rtx); 2839 extern int reg_set_p (const_rtx, const_rtx); 2840 extern int multiple_sets (const_rtx); 2841 extern int set_noop_p (const_rtx); 2842 extern int noop_move_p (const_rtx); 2843 extern bool refers_to_regno_p (unsigned int, unsigned int, const_rtx, rtx *); 2844 extern int reg_overlap_mentioned_p (const_rtx, const_rtx); 2845 extern const_rtx set_of (const_rtx, const_rtx); 2846 extern void record_hard_reg_sets (rtx, const_rtx, void *); 2847 extern void record_hard_reg_uses (rtx *, void *); 2848 #ifdef HARD_CONST 2849 extern void find_all_hard_regs (const_rtx, HARD_REG_SET *); 2850 extern void find_all_hard_reg_sets (const_rtx, HARD_REG_SET *, bool); 2851 #endif 2852 extern void note_stores (const_rtx, void (*) (rtx, const_rtx, void *), void *); 2853 extern void note_uses (rtx *, void (*) (rtx *, void *), void *); 2854 extern int dead_or_set_p (const_rtx, const_rtx); 2855 extern int dead_or_set_regno_p (const_rtx, unsigned int); 2856 extern rtx find_reg_note (const_rtx, enum reg_note, const_rtx); 2857 extern rtx find_regno_note (const_rtx, enum reg_note, unsigned int); 2858 extern rtx find_reg_equal_equiv_note (const_rtx); 2859 extern rtx find_constant_src (const rtx_insn *); 2860 extern int find_reg_fusage (const_rtx, enum rtx_code, const_rtx); 2861 extern int find_regno_fusage (const_rtx, enum rtx_code, unsigned int); 2862 extern rtx alloc_reg_note (enum reg_note, rtx, rtx); 2863 extern void add_reg_note (rtx, enum reg_note, rtx); 2864 extern void add_int_reg_note (rtx, enum reg_note, int); 2865 extern void add_shallow_copy_of_reg_note (rtx, rtx); 2866 extern void remove_note (rtx, const_rtx); 2867 extern void remove_reg_equal_equiv_notes (rtx); 2868 extern void remove_reg_equal_equiv_notes_for_regno (unsigned int); 2869 extern int side_effects_p (const_rtx); 2870 extern int volatile_refs_p (const_rtx); 2871 extern int volatile_insn_p (const_rtx); 2872 extern int may_trap_p_1 (const_rtx, unsigned); 2873 extern int may_trap_p (const_rtx); 2874 extern int may_trap_or_fault_p (const_rtx); 2875 extern bool can_throw_internal (const_rtx); 2876 extern bool can_throw_external (const_rtx); 2877 extern bool insn_could_throw_p (const_rtx); 2878 extern bool insn_nothrow_p (const_rtx); 2879 extern bool can_nonlocal_goto (const_rtx); 2880 extern void copy_reg_eh_region_note_forward (rtx, rtx_insn *, rtx); 2881 extern void copy_reg_eh_region_note_backward (rtx, rtx_insn *, rtx); 2882 extern int inequality_comparisons_p (const_rtx); 2883 extern rtx replace_rtx (rtx, rtx, rtx); 2884 extern void replace_label (rtx *, rtx, rtx, bool); 2885 extern void replace_label_in_insn (rtx_insn *, rtx, rtx, bool); 2886 extern bool rtx_referenced_p (const_rtx, const_rtx); 2887 extern bool tablejump_p (const rtx_insn *, rtx *, rtx_jump_table_data **); 2888 extern int computed_jump_p (const_rtx); 2889 extern bool tls_referenced_p (const_rtx); 2890 2891 /* Overload for refers_to_regno_p for checking a single register. */ 2892 inline bool 2893 refers_to_regno_p (unsigned int regnum, const_rtx x, rtx* loc = NULL) 2894 { 2895 return refers_to_regno_p (regnum, regnum + 1, x, loc); 2896 } 2897 2898 /* Callback for for_each_inc_dec, to process the autoinc operation OP 2899 within MEM that sets DEST to SRC + SRCOFF, or SRC if SRCOFF is 2900 NULL. The callback is passed the same opaque ARG passed to 2901 for_each_inc_dec. Return zero to continue looking for other 2902 autoinc operations or any other value to interrupt the traversal and 2903 return that value to the caller of for_each_inc_dec. */ 2904 typedef int (*for_each_inc_dec_fn) (rtx mem, rtx op, rtx dest, rtx src, 2905 rtx srcoff, void *arg); 2906 extern int for_each_inc_dec (rtx, for_each_inc_dec_fn, void *arg); 2907 2908 typedef int (*rtx_equal_p_callback_function) (const_rtx *, const_rtx *, 2909 rtx *, rtx *); 2910 extern int rtx_equal_p_cb (const_rtx, const_rtx, 2911 rtx_equal_p_callback_function); 2912 2913 typedef int (*hash_rtx_callback_function) (const_rtx, machine_mode, rtx *, 2914 machine_mode *); 2915 extern unsigned hash_rtx_cb (const_rtx, machine_mode, int *, int *, 2916 bool, hash_rtx_callback_function); 2917 2918 extern rtx regno_use_in (unsigned int, rtx); 2919 extern int auto_inc_p (const_rtx); 2920 extern int in_expr_list_p (const_rtx, const_rtx); 2921 extern void remove_node_from_expr_list (const_rtx, rtx_expr_list **); 2922 extern void remove_node_from_insn_list (const rtx_insn *, rtx_insn_list **); 2923 extern int loc_mentioned_in_p (rtx *, const_rtx); 2924 extern rtx_insn *find_first_parameter_load (rtx_insn *, rtx_insn *); 2925 extern bool keep_with_call_p (const rtx_insn *); 2926 extern bool label_is_jump_target_p (const_rtx, const rtx_insn *); 2927 extern int insn_rtx_cost (rtx, bool); 2928 extern unsigned seq_cost (const rtx_insn *, bool); 2929 2930 /* Given an insn and condition, return a canonical description of 2931 the test being made. */ 2932 extern rtx canonicalize_condition (rtx_insn *, rtx, int, rtx_insn **, rtx, 2933 int, int); 2934 2935 /* Given a JUMP_INSN, return a canonical description of the test 2936 being made. */ 2937 extern rtx get_condition (rtx_insn *, rtx_insn **, int, int); 2938 2939 /* Information about a subreg of a hard register. */ 2940 struct subreg_info 2941 { 2942 /* Offset of first hard register involved in the subreg. */ 2943 int offset; 2944 /* Number of hard registers involved in the subreg. In the case of 2945 a paradoxical subreg, this is the number of registers that would 2946 be modified by writing to the subreg; some of them may be don't-care 2947 when reading from the subreg. */ 2948 int nregs; 2949 /* Whether this subreg can be represented as a hard reg with the new 2950 mode (by adding OFFSET to the original hard register). */ 2951 bool representable_p; 2952 }; 2953 2954 extern void subreg_get_info (unsigned int, machine_mode, 2955 unsigned int, machine_mode, 2956 struct subreg_info *); 2957 2958 /* lists.c */ 2959 2960 extern void free_EXPR_LIST_list (rtx_expr_list **); 2961 extern void free_INSN_LIST_list (rtx_insn_list **); 2962 extern void free_EXPR_LIST_node (rtx); 2963 extern void free_INSN_LIST_node (rtx); 2964 extern rtx_insn_list *alloc_INSN_LIST (rtx, rtx); 2965 extern rtx_insn_list *copy_INSN_LIST (rtx_insn_list *); 2966 extern rtx_insn_list *concat_INSN_LIST (rtx_insn_list *, rtx_insn_list *); 2967 extern rtx_expr_list *alloc_EXPR_LIST (int, rtx, rtx); 2968 extern void remove_free_INSN_LIST_elem (rtx_insn *, rtx_insn_list **); 2969 extern rtx remove_list_elem (rtx, rtx *); 2970 extern rtx_insn *remove_free_INSN_LIST_node (rtx_insn_list **); 2971 extern rtx remove_free_EXPR_LIST_node (rtx_expr_list **); 2972 2973 2974 /* reginfo.c */ 2975 2976 /* Resize reg info. */ 2977 extern bool resize_reg_info (void); 2978 /* Free up register info memory. */ 2979 extern void free_reg_info (void); 2980 extern void init_subregs_of_mode (void); 2981 extern void finish_subregs_of_mode (void); 2982 2983 /* recog.c */ 2984 extern rtx extract_asm_operands (rtx); 2985 extern int asm_noperands (const_rtx); 2986 extern const char *decode_asm_operands (rtx, rtx *, rtx **, const char **, 2987 machine_mode *, location_t *); 2988 extern void get_referenced_operands (const char *, bool *, unsigned int); 2989 2990 extern enum reg_class reg_preferred_class (int); 2991 extern enum reg_class reg_alternate_class (int); 2992 extern enum reg_class reg_allocno_class (int); 2993 extern void setup_reg_classes (int, enum reg_class, enum reg_class, 2994 enum reg_class); 2995 2996 extern void split_all_insns (void); 2997 extern unsigned int split_all_insns_noflow (void); 2998 2999 #define MAX_SAVED_CONST_INT 64 3000 extern GTY(()) rtx const_int_rtx[MAX_SAVED_CONST_INT * 2 + 1]; 3001 3002 #define const0_rtx (const_int_rtx[MAX_SAVED_CONST_INT]) 3003 #define const1_rtx (const_int_rtx[MAX_SAVED_CONST_INT+1]) 3004 #define const2_rtx (const_int_rtx[MAX_SAVED_CONST_INT+2]) 3005 #define constm1_rtx (const_int_rtx[MAX_SAVED_CONST_INT-1]) 3006 extern GTY(()) rtx const_true_rtx; 3007 3008 extern GTY(()) rtx const_tiny_rtx[4][(int) MAX_MACHINE_MODE]; 3009 3010 /* Returns a constant 0 rtx in mode MODE. Integer modes are treated the 3011 same as VOIDmode. */ 3012 3013 #define CONST0_RTX(MODE) (const_tiny_rtx[0][(int) (MODE)]) 3014 3015 /* Likewise, for the constants 1 and 2 and -1. */ 3016 3017 #define CONST1_RTX(MODE) (const_tiny_rtx[1][(int) (MODE)]) 3018 #define CONST2_RTX(MODE) (const_tiny_rtx[2][(int) (MODE)]) 3019 #define CONSTM1_RTX(MODE) (const_tiny_rtx[3][(int) (MODE)]) 3020 3021 extern GTY(()) rtx pc_rtx; 3022 extern GTY(()) rtx cc0_rtx; 3023 extern GTY(()) rtx ret_rtx; 3024 extern GTY(()) rtx simple_return_rtx; 3025 3026 /* If HARD_FRAME_POINTER_REGNUM is defined, then a special dummy reg 3027 is used to represent the frame pointer. This is because the 3028 hard frame pointer and the automatic variables are separated by an amount 3029 that cannot be determined until after register allocation. We can assume 3030 that in this case ELIMINABLE_REGS will be defined, one action of which 3031 will be to eliminate FRAME_POINTER_REGNUM into HARD_FRAME_POINTER_REGNUM. */ 3032 #ifndef HARD_FRAME_POINTER_REGNUM 3033 #define HARD_FRAME_POINTER_REGNUM FRAME_POINTER_REGNUM 3034 #endif 3035 3036 #ifndef HARD_FRAME_POINTER_IS_FRAME_POINTER 3037 #define HARD_FRAME_POINTER_IS_FRAME_POINTER \ 3038 (HARD_FRAME_POINTER_REGNUM == FRAME_POINTER_REGNUM) 3039 #endif 3040 3041 #ifndef HARD_FRAME_POINTER_IS_ARG_POINTER 3042 #define HARD_FRAME_POINTER_IS_ARG_POINTER \ 3043 (HARD_FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM) 3044 #endif 3045 3046 /* Index labels for global_rtl. */ 3047 enum global_rtl_index 3048 { 3049 GR_STACK_POINTER, 3050 GR_FRAME_POINTER, 3051 /* For register elimination to work properly these hard_frame_pointer_rtx, 3052 frame_pointer_rtx, and arg_pointer_rtx must be the same if they refer to 3053 the same register. */ 3054 #if FRAME_POINTER_REGNUM == ARG_POINTER_REGNUM 3055 GR_ARG_POINTER = GR_FRAME_POINTER, 3056 #endif 3057 #if HARD_FRAME_POINTER_IS_FRAME_POINTER 3058 GR_HARD_FRAME_POINTER = GR_FRAME_POINTER, 3059 #else 3060 GR_HARD_FRAME_POINTER, 3061 #endif 3062 #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM 3063 #if HARD_FRAME_POINTER_IS_ARG_POINTER 3064 GR_ARG_POINTER = GR_HARD_FRAME_POINTER, 3065 #else 3066 GR_ARG_POINTER, 3067 #endif 3068 #endif 3069 GR_VIRTUAL_INCOMING_ARGS, 3070 GR_VIRTUAL_STACK_ARGS, 3071 GR_VIRTUAL_STACK_DYNAMIC, 3072 GR_VIRTUAL_OUTGOING_ARGS, 3073 GR_VIRTUAL_CFA, 3074 GR_VIRTUAL_PREFERRED_STACK_BOUNDARY, 3075 3076 GR_MAX 3077 }; 3078 3079 /* Target-dependent globals. */ 3080 struct GTY(()) target_rtl { 3081 /* All references to the hard registers in global_rtl_index go through 3082 these unique rtl objects. On machines where the frame-pointer and 3083 arg-pointer are the same register, they use the same unique object. 3084 3085 After register allocation, other rtl objects which used to be pseudo-regs 3086 may be clobbered to refer to the frame-pointer register. 3087 But references that were originally to the frame-pointer can be 3088 distinguished from the others because they contain frame_pointer_rtx. 3089 3090 When to use frame_pointer_rtx and hard_frame_pointer_rtx is a little 3091 tricky: until register elimination has taken place hard_frame_pointer_rtx 3092 should be used if it is being set, and frame_pointer_rtx otherwise. After 3093 register elimination hard_frame_pointer_rtx should always be used. 3094 On machines where the two registers are same (most) then these are the 3095 same. */ 3096 rtx x_global_rtl[GR_MAX]; 3097 3098 /* A unique representation of (REG:Pmode PIC_OFFSET_TABLE_REGNUM). */ 3099 rtx x_pic_offset_table_rtx; 3100 3101 /* A unique representation of (REG:Pmode RETURN_ADDRESS_POINTER_REGNUM). 3102 This is used to implement __builtin_return_address for some machines; 3103 see for instance the MIPS port. */ 3104 rtx x_return_address_pointer_rtx; 3105 3106 /* Commonly used RTL for hard registers. These objects are not 3107 necessarily unique, so we allocate them separately from global_rtl. 3108 They are initialized once per compilation unit, then copied into 3109 regno_reg_rtx at the beginning of each function. */ 3110 rtx x_initial_regno_reg_rtx[FIRST_PSEUDO_REGISTER]; 3111 3112 /* A sample (mem:M stack_pointer_rtx) rtx for each mode M. */ 3113 rtx x_top_of_stack[MAX_MACHINE_MODE]; 3114 3115 /* Static hunks of RTL used by the aliasing code; these are treated 3116 as persistent to avoid unnecessary RTL allocations. */ 3117 rtx x_static_reg_base_value[FIRST_PSEUDO_REGISTER]; 3118 3119 /* The default memory attributes for each mode. */ 3120 struct mem_attrs *x_mode_mem_attrs[(int) MAX_MACHINE_MODE]; 3121 3122 /* Track if RTL has been initialized. */ 3123 bool target_specific_initialized; 3124 }; 3125 3126 extern GTY(()) struct target_rtl default_target_rtl; 3127 #if SWITCHABLE_TARGET 3128 extern struct target_rtl *this_target_rtl; 3129 #else 3130 #define this_target_rtl (&default_target_rtl) 3131 #endif 3132 3133 #define global_rtl \ 3134 (this_target_rtl->x_global_rtl) 3135 #define pic_offset_table_rtx \ 3136 (this_target_rtl->x_pic_offset_table_rtx) 3137 #define return_address_pointer_rtx \ 3138 (this_target_rtl->x_return_address_pointer_rtx) 3139 #define top_of_stack \ 3140 (this_target_rtl->x_top_of_stack) 3141 #define mode_mem_attrs \ 3142 (this_target_rtl->x_mode_mem_attrs) 3143 3144 /* All references to certain hard regs, except those created 3145 by allocating pseudo regs into them (when that's possible), 3146 go through these unique rtx objects. */ 3147 #define stack_pointer_rtx (global_rtl[GR_STACK_POINTER]) 3148 #define frame_pointer_rtx (global_rtl[GR_FRAME_POINTER]) 3149 #define hard_frame_pointer_rtx (global_rtl[GR_HARD_FRAME_POINTER]) 3150 #define arg_pointer_rtx (global_rtl[GR_ARG_POINTER]) 3151 3152 #ifndef GENERATOR_FILE 3153 /* Return the attributes of a MEM rtx. */ 3154 static inline struct mem_attrs * 3155 get_mem_attrs (const_rtx x) 3156 { 3157 struct mem_attrs *attrs; 3158 3159 attrs = MEM_ATTRS (x); 3160 if (!attrs) 3161 attrs = mode_mem_attrs[(int) GET_MODE (x)]; 3162 return attrs; 3163 } 3164 #endif 3165 3166 /* Include the RTL generation functions. */ 3167 3168 #ifndef GENERATOR_FILE 3169 #include "genrtl.h" 3170 #undef gen_rtx_ASM_INPUT 3171 #define gen_rtx_ASM_INPUT(MODE, ARG0) \ 3172 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), 0) 3173 #define gen_rtx_ASM_INPUT_loc(MODE, ARG0, LOC) \ 3174 gen_rtx_fmt_si (ASM_INPUT, (MODE), (ARG0), (LOC)) 3175 #endif 3176 3177 /* There are some RTL codes that require special attention; the 3178 generation functions included above do the raw handling. If you 3179 add to this list, modify special_rtx in gengenrtl.c as well. */ 3180 3181 extern rtx_expr_list *gen_rtx_EXPR_LIST (machine_mode, rtx, rtx); 3182 extern rtx_insn_list *gen_rtx_INSN_LIST (machine_mode, rtx, rtx); 3183 extern rtx_insn * 3184 gen_rtx_INSN (machine_mode mode, rtx_insn *prev_insn, rtx_insn *next_insn, 3185 basic_block bb, rtx pattern, int location, int code, 3186 rtx reg_notes); 3187 extern rtx gen_rtx_CONST_INT (machine_mode, HOST_WIDE_INT); 3188 extern rtx gen_rtx_CONST_VECTOR (machine_mode, rtvec); 3189 extern rtx gen_raw_REG (machine_mode, int); 3190 extern rtx gen_rtx_REG (machine_mode, unsigned); 3191 extern rtx gen_rtx_SUBREG (machine_mode, rtx, int); 3192 extern rtx gen_rtx_MEM (machine_mode, rtx); 3193 extern rtx gen_rtx_VAR_LOCATION (machine_mode, tree, rtx, 3194 enum var_init_status); 3195 3196 #define GEN_INT(N) gen_rtx_CONST_INT (VOIDmode, (N)) 3197 3198 /* Virtual registers are used during RTL generation to refer to locations into 3199 the stack frame when the actual location isn't known until RTL generation 3200 is complete. The routine instantiate_virtual_regs replaces these with 3201 the proper value, which is normally {frame,arg,stack}_pointer_rtx plus 3202 a constant. */ 3203 3204 #define FIRST_VIRTUAL_REGISTER (FIRST_PSEUDO_REGISTER) 3205 3206 /* This points to the first word of the incoming arguments passed on the stack, 3207 either by the caller or by the callee when pretending it was passed by the 3208 caller. */ 3209 3210 #define virtual_incoming_args_rtx (global_rtl[GR_VIRTUAL_INCOMING_ARGS]) 3211 3212 #define VIRTUAL_INCOMING_ARGS_REGNUM (FIRST_VIRTUAL_REGISTER) 3213 3214 /* If FRAME_GROWS_DOWNWARD, this points to immediately above the first 3215 variable on the stack. Otherwise, it points to the first variable on 3216 the stack. */ 3217 3218 #define virtual_stack_vars_rtx (global_rtl[GR_VIRTUAL_STACK_ARGS]) 3219 3220 #define VIRTUAL_STACK_VARS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 1) 3221 3222 /* This points to the location of dynamically-allocated memory on the stack 3223 immediately after the stack pointer has been adjusted by the amount 3224 desired. */ 3225 3226 #define virtual_stack_dynamic_rtx (global_rtl[GR_VIRTUAL_STACK_DYNAMIC]) 3227 3228 #define VIRTUAL_STACK_DYNAMIC_REGNUM ((FIRST_VIRTUAL_REGISTER) + 2) 3229 3230 /* This points to the location in the stack at which outgoing arguments should 3231 be written when the stack is pre-pushed (arguments pushed using push 3232 insns always use sp). */ 3233 3234 #define virtual_outgoing_args_rtx (global_rtl[GR_VIRTUAL_OUTGOING_ARGS]) 3235 3236 #define VIRTUAL_OUTGOING_ARGS_REGNUM ((FIRST_VIRTUAL_REGISTER) + 3) 3237 3238 /* This points to the Canonical Frame Address of the function. This 3239 should correspond to the CFA produced by INCOMING_FRAME_SP_OFFSET, 3240 but is calculated relative to the arg pointer for simplicity; the 3241 frame pointer nor stack pointer are necessarily fixed relative to 3242 the CFA until after reload. */ 3243 3244 #define virtual_cfa_rtx (global_rtl[GR_VIRTUAL_CFA]) 3245 3246 #define VIRTUAL_CFA_REGNUM ((FIRST_VIRTUAL_REGISTER) + 4) 3247 3248 #define LAST_VIRTUAL_POINTER_REGISTER ((FIRST_VIRTUAL_REGISTER) + 4) 3249 3250 /* This is replaced by crtl->preferred_stack_boundary / BITS_PER_UNIT 3251 when finalized. */ 3252 3253 #define virtual_preferred_stack_boundary_rtx \ 3254 (global_rtl[GR_VIRTUAL_PREFERRED_STACK_BOUNDARY]) 3255 3256 #define VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM \ 3257 ((FIRST_VIRTUAL_REGISTER) + 5) 3258 3259 #define LAST_VIRTUAL_REGISTER ((FIRST_VIRTUAL_REGISTER) + 5) 3260 3261 /* Nonzero if REGNUM is a pointer into the stack frame. */ 3262 #define REGNO_PTR_FRAME_P(REGNUM) \ 3263 ((REGNUM) == STACK_POINTER_REGNUM \ 3264 || (REGNUM) == FRAME_POINTER_REGNUM \ 3265 || (REGNUM) == HARD_FRAME_POINTER_REGNUM \ 3266 || (REGNUM) == ARG_POINTER_REGNUM \ 3267 || ((REGNUM) >= FIRST_VIRTUAL_REGISTER \ 3268 && (REGNUM) <= LAST_VIRTUAL_POINTER_REGISTER)) 3269 3270 /* REGNUM never really appearing in the INSN stream. */ 3271 #define INVALID_REGNUM (~(unsigned int) 0) 3272 3273 /* REGNUM for which no debug information can be generated. */ 3274 #define IGNORED_DWARF_REGNUM (INVALID_REGNUM - 1) 3275 3276 extern rtx output_constant_def (tree, int); 3277 extern rtx lookup_constant_def (tree); 3278 3279 /* Nonzero after end of reload pass. 3280 Set to 1 or 0 by reload1.c. */ 3281 3282 extern int reload_completed; 3283 3284 /* Nonzero after thread_prologue_and_epilogue_insns has run. */ 3285 extern int epilogue_completed; 3286 3287 /* Set to 1 while reload_as_needed is operating. 3288 Required by some machines to handle any generated moves differently. */ 3289 3290 extern int reload_in_progress; 3291 3292 /* Set to 1 while in lra. */ 3293 extern int lra_in_progress; 3294 3295 /* This macro indicates whether you may create a new 3296 pseudo-register. */ 3297 3298 #define can_create_pseudo_p() (!reload_in_progress && !reload_completed) 3299 3300 #ifdef STACK_REGS 3301 /* Nonzero after end of regstack pass. 3302 Set to 1 or 0 by reg-stack.c. */ 3303 extern int regstack_completed; 3304 #endif 3305 3306 /* If this is nonzero, we do not bother generating VOLATILE 3307 around volatile memory references, and we are willing to 3308 output indirect addresses. If cse is to follow, we reject 3309 indirect addresses so a useful potential cse is generated; 3310 if it is used only once, instruction combination will produce 3311 the same indirect address eventually. */ 3312 extern int cse_not_expected; 3313 3314 /* Translates rtx code to tree code, for those codes needed by 3315 REAL_ARITHMETIC. The function returns an int because the caller may not 3316 know what `enum tree_code' means. */ 3317 3318 extern int rtx_to_tree_code (enum rtx_code); 3319 3320 /* In cse.c */ 3321 extern int delete_trivially_dead_insns (rtx_insn *, int); 3322 extern int exp_equiv_p (const_rtx, const_rtx, int, bool); 3323 extern unsigned hash_rtx (const_rtx x, machine_mode, int *, int *, bool); 3324 3325 /* In dse.c */ 3326 extern bool check_for_inc_dec (rtx_insn *insn); 3327 3328 /* In jump.c */ 3329 extern int comparison_dominates_p (enum rtx_code, enum rtx_code); 3330 extern bool jump_to_label_p (const rtx_insn *); 3331 extern int condjump_p (const rtx_insn *); 3332 extern int any_condjump_p (const rtx_insn *); 3333 extern int any_uncondjump_p (const rtx_insn *); 3334 extern rtx pc_set (const rtx_insn *); 3335 extern rtx condjump_label (const rtx_insn *); 3336 extern int simplejump_p (const rtx_insn *); 3337 extern int returnjump_p (const rtx_insn *); 3338 extern int eh_returnjump_p (rtx_insn *); 3339 extern int onlyjump_p (const rtx_insn *); 3340 extern int only_sets_cc0_p (const_rtx); 3341 extern int sets_cc0_p (const_rtx); 3342 extern int invert_jump_1 (rtx_insn *, rtx); 3343 extern int invert_jump (rtx_insn *, rtx, int); 3344 extern int rtx_renumbered_equal_p (const_rtx, const_rtx); 3345 extern int true_regnum (const_rtx); 3346 extern unsigned int reg_or_subregno (const_rtx); 3347 extern int redirect_jump_1 (rtx, rtx); 3348 extern void redirect_jump_2 (rtx, rtx, rtx, int, int); 3349 extern int redirect_jump (rtx, rtx, int); 3350 extern void rebuild_jump_labels (rtx_insn *); 3351 extern void rebuild_jump_labels_chain (rtx_insn *); 3352 extern rtx reversed_comparison (const_rtx, machine_mode); 3353 extern enum rtx_code reversed_comparison_code (const_rtx, const_rtx); 3354 extern enum rtx_code reversed_comparison_code_parts (enum rtx_code, const_rtx, 3355 const_rtx, const_rtx); 3356 extern void delete_for_peephole (rtx_insn *, rtx_insn *); 3357 extern int condjump_in_parallel_p (const rtx_insn *); 3358 3359 /* In emit-rtl.c. */ 3360 extern int max_reg_num (void); 3361 extern int max_label_num (void); 3362 extern int get_first_label_num (void); 3363 extern void maybe_set_first_label_num (rtx); 3364 extern void delete_insns_since (rtx_insn *); 3365 extern void mark_reg_pointer (rtx, int); 3366 extern void mark_user_reg (rtx); 3367 extern void reset_used_flags (rtx); 3368 extern void set_used_flags (rtx); 3369 extern void reorder_insns (rtx_insn *, rtx_insn *, rtx_insn *); 3370 extern void reorder_insns_nobb (rtx_insn *, rtx_insn *, rtx_insn *); 3371 extern int get_max_insn_count (void); 3372 extern int in_sequence_p (void); 3373 extern void init_emit (void); 3374 extern void init_emit_regs (void); 3375 extern void init_derived_machine_modes (void); 3376 extern void init_emit_once (void); 3377 extern void push_topmost_sequence (void); 3378 extern void pop_topmost_sequence (void); 3379 extern void set_new_first_and_last_insn (rtx_insn *, rtx_insn *); 3380 extern unsigned int unshare_all_rtl (void); 3381 extern void unshare_all_rtl_again (rtx_insn *); 3382 extern void unshare_all_rtl_in_chain (rtx_insn *); 3383 extern void verify_rtl_sharing (void); 3384 extern void add_insn (rtx_insn *); 3385 extern void add_insn_before (rtx, rtx, basic_block); 3386 extern void add_insn_after (rtx, rtx, basic_block); 3387 extern void remove_insn (rtx); 3388 extern rtx_insn *emit (rtx); 3389 extern void emit_insn_at_entry (rtx); 3390 extern rtx gen_lowpart_SUBREG (machine_mode, rtx); 3391 extern rtx gen_const_mem (machine_mode, rtx); 3392 extern rtx gen_frame_mem (machine_mode, rtx); 3393 extern rtx gen_tmp_stack_mem (machine_mode, rtx); 3394 extern bool validate_subreg (machine_mode, machine_mode, 3395 const_rtx, unsigned int); 3396 3397 /* In combine.c */ 3398 extern unsigned int extended_count (const_rtx, machine_mode, int); 3399 extern rtx remove_death (unsigned int, rtx_insn *); 3400 extern void dump_combine_stats (FILE *); 3401 extern void dump_combine_total_stats (FILE *); 3402 extern rtx make_compound_operation (rtx, enum rtx_code); 3403 3404 /* In sched-rgn.c. */ 3405 extern void schedule_insns (void); 3406 3407 /* In sched-ebb.c. */ 3408 extern void schedule_ebbs (void); 3409 3410 /* In sel-sched-dump.c. */ 3411 extern void sel_sched_fix_param (const char *param, const char *val); 3412 3413 /* In print-rtl.c */ 3414 extern const char *print_rtx_head; 3415 extern void debug (const rtx_def &ref); 3416 extern void debug (const rtx_def *ptr); 3417 extern void debug_rtx (const_rtx); 3418 extern void debug_rtx_list (const rtx_insn *, int); 3419 extern void debug_rtx_range (const rtx_insn *, const rtx_insn *); 3420 extern const_rtx debug_rtx_find (const rtx_insn *, int); 3421 extern void print_mem_expr (FILE *, const_tree); 3422 extern void print_rtl (FILE *, const_rtx); 3423 extern void print_simple_rtl (FILE *, const_rtx); 3424 extern int print_rtl_single (FILE *, const_rtx); 3425 extern int print_rtl_single_with_indent (FILE *, const_rtx, int); 3426 extern void print_inline_rtx (FILE *, const_rtx, int); 3427 3428 /* Functions in sched-vis.c. FIXME: Ideally these functions would 3429 not be in sched-vis.c but in rtl.c, because they are not only used 3430 by the scheduler anymore but for all "slim" RTL dumping. */ 3431 extern void dump_value_slim (FILE *, const_rtx, int); 3432 extern void dump_insn_slim (FILE *, const_rtx); 3433 extern void dump_rtl_slim (FILE *, const rtx_insn *, const rtx_insn *, 3434 int, int); 3435 extern void print_value (pretty_printer *, const_rtx, int); 3436 extern void print_pattern (pretty_printer *, const_rtx, int); 3437 extern void print_insn (pretty_printer *, const_rtx, int); 3438 extern void rtl_dump_bb_for_graph (pretty_printer *, basic_block); 3439 extern const char *str_pattern_slim (const_rtx); 3440 3441 /* In stmt.c */ 3442 extern void expand_null_return (void); 3443 extern void expand_naked_return (void); 3444 extern void emit_jump (rtx); 3445 3446 /* In expr.c */ 3447 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT, 3448 unsigned int, int); 3449 extern HOST_WIDE_INT find_args_size_adjust (rtx_insn *); 3450 extern int fixup_args_size_notes (rtx_insn *, rtx_insn *, int); 3451 3452 /* In expmed.c */ 3453 extern void init_expmed (void); 3454 extern void expand_inc (rtx, rtx); 3455 extern void expand_dec (rtx, rtx); 3456 3457 /* In lower-subreg.c */ 3458 extern void init_lower_subreg (void); 3459 3460 /* In gcse.c */ 3461 extern bool can_copy_p (machine_mode); 3462 extern bool can_assign_to_reg_without_clobbers_p (rtx); 3463 extern rtx fis_get_condition (rtx_insn *); 3464 3465 /* In ira.c */ 3466 #ifdef HARD_CONST 3467 extern HARD_REG_SET eliminable_regset; 3468 #endif 3469 extern void mark_elimination (int, int); 3470 3471 /* In reginfo.c */ 3472 extern int reg_classes_intersect_p (reg_class_t, reg_class_t); 3473 extern int reg_class_subset_p (reg_class_t, reg_class_t); 3474 extern void globalize_reg (tree, int); 3475 extern void init_reg_modes_target (void); 3476 extern void init_regs (void); 3477 extern void reinit_regs (void); 3478 extern void init_fake_stack_mems (void); 3479 extern void save_register_info (void); 3480 extern void init_reg_sets (void); 3481 extern void regclass (rtx, int); 3482 extern void reg_scan (rtx_insn *, unsigned int); 3483 extern void fix_register (const char *, int, int); 3484 #ifdef HARD_CONST 3485 extern const HARD_REG_SET *valid_mode_changes_for_regno (unsigned int); 3486 #endif 3487 3488 /* In reload1.c */ 3489 extern int function_invariant_p (const_rtx); 3490 3491 /* In calls.c */ 3492 enum libcall_type 3493 { 3494 LCT_NORMAL = 0, 3495 LCT_CONST = 1, 3496 LCT_PURE = 2, 3497 LCT_NORETURN = 3, 3498 LCT_THROW = 4, 3499 LCT_RETURNS_TWICE = 5 3500 }; 3501 3502 extern void emit_library_call (rtx, enum libcall_type, machine_mode, int, 3503 ...); 3504 extern rtx emit_library_call_value (rtx, rtx, enum libcall_type, 3505 machine_mode, int, ...); 3506 3507 /* In varasm.c */ 3508 extern void init_varasm_once (void); 3509 3510 extern rtx make_debug_expr_from_rtl (const_rtx); 3511 3512 /* In read-rtl.c */ 3513 extern bool read_rtx (const char *, rtx *); 3514 3515 /* In alias.c */ 3516 extern rtx canon_rtx (rtx); 3517 extern int true_dependence (const_rtx, machine_mode, const_rtx); 3518 extern rtx get_addr (rtx); 3519 extern int canon_true_dependence (const_rtx, machine_mode, rtx, 3520 const_rtx, rtx); 3521 extern int read_dependence (const_rtx, const_rtx); 3522 extern int anti_dependence (const_rtx, const_rtx); 3523 extern int canon_anti_dependence (const_rtx, bool, 3524 const_rtx, machine_mode, rtx); 3525 extern int output_dependence (const_rtx, const_rtx); 3526 extern int canon_output_dependence (const_rtx, bool, 3527 const_rtx, machine_mode, rtx); 3528 extern int may_alias_p (const_rtx, const_rtx); 3529 extern void init_alias_target (void); 3530 extern void init_alias_analysis (void); 3531 extern void end_alias_analysis (void); 3532 extern void vt_equate_reg_base_value (const_rtx, const_rtx); 3533 extern bool memory_modified_in_insn_p (const_rtx, const_rtx); 3534 extern bool memory_must_be_modified_in_insn_p (const_rtx, const_rtx); 3535 extern bool may_be_sp_based_p (rtx); 3536 extern rtx gen_hard_reg_clobber (machine_mode, unsigned int); 3537 extern rtx get_reg_known_value (unsigned int); 3538 extern bool get_reg_known_equiv_p (unsigned int); 3539 extern rtx get_reg_base_value (unsigned int); 3540 3541 #ifdef STACK_REGS 3542 extern int stack_regs_mentioned (const_rtx insn); 3543 #endif 3544 3545 /* In toplev.c */ 3546 extern GTY(()) rtx stack_limit_rtx; 3547 3548 /* In var-tracking.c */ 3549 extern unsigned int variable_tracking_main (void); 3550 3551 /* In stor-layout.c. */ 3552 extern void get_mode_bounds (machine_mode, int, machine_mode, 3553 rtx *, rtx *); 3554 3555 /* In loop-iv.c */ 3556 extern rtx canon_condition (rtx); 3557 extern void simplify_using_condition (rtx, rtx *, bitmap); 3558 3559 /* In final.c */ 3560 extern unsigned int compute_alignments (void); 3561 extern void update_alignments (vec<rtx> &); 3562 extern int asm_str_count (const char *templ); 3563 3564 struct rtl_hooks 3565 { 3566 rtx (*gen_lowpart) (machine_mode, rtx); 3567 rtx (*gen_lowpart_no_emit) (machine_mode, rtx); 3568 rtx (*reg_nonzero_bits) (const_rtx, machine_mode, const_rtx, machine_mode, 3569 unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT *); 3570 rtx (*reg_num_sign_bit_copies) (const_rtx, machine_mode, const_rtx, machine_mode, 3571 unsigned int, unsigned int *); 3572 bool (*reg_truncated_to_mode) (machine_mode, const_rtx); 3573 3574 /* Whenever you add entries here, make sure you adjust rtlhooks-def.h. */ 3575 }; 3576 3577 /* Each pass can provide its own. */ 3578 extern struct rtl_hooks rtl_hooks; 3579 3580 /* ... but then it has to restore these. */ 3581 extern const struct rtl_hooks general_rtl_hooks; 3582 3583 /* Keep this for the nonce. */ 3584 #define gen_lowpart rtl_hooks.gen_lowpart 3585 3586 extern void insn_locations_init (void); 3587 extern void insn_locations_finalize (void); 3588 extern void set_curr_insn_location (location_t); 3589 extern location_t curr_insn_location (void); 3590 3591 /* rtl-error.c */ 3592 extern void _fatal_insn_not_found (const_rtx, const char *, int, const char *) 3593 ATTRIBUTE_NORETURN; 3594 extern void _fatal_insn (const char *, const_rtx, const char *, int, const char *) 3595 ATTRIBUTE_NORETURN; 3596 3597 #define fatal_insn(msgid, insn) \ 3598 _fatal_insn (msgid, insn, __FILE__, __LINE__, __FUNCTION__) 3599 #define fatal_insn_not_found(insn) \ 3600 _fatal_insn_not_found (insn, __FILE__, __LINE__, __FUNCTION__) 3601 3602 /* reginfo.c */ 3603 extern tree GTY(()) global_regs_decl[FIRST_PSEUDO_REGISTER]; 3604 3605 3606 #endif /* ! GCC_RTL_H */ 3607