gcc/rtl.c

   1 /* RTL utility routines.
   2    Copyright (C) 1987, 1988, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
   3    2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* This file is compiled twice: once for the generator programs
  22    once for the compiler.  */
  23 #ifdef GENERATOR_FILE
  24 #include "bconfig.h"
  25 #else
  26 #include "config.h"
  27 #endif
  28
  29 #include "system.h"
  30 #include "coretypes.h"
  31 #include "tm.h"
  32 #include "rtl.h"
  33 #include "real.h"
  34 #include "ggc.h"
  35 #ifdef GENERATOR_FILE
  36 # include "errors.h"
  37 #else
  38 # include "toplev.h"
  39 #endif
  40
  41 \f
  42 /* Indexed by rtx code, gives number of operands for an rtx with that code.
  43    Does NOT include rtx header data (code and links).  */
  44
  45 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   sizeof FORMAT - 1 ,
  46
  47 const unsigned char rtx_length[NUM_RTX_CODE] = {
  48 #include "rtl.def"
  49 };
  50
  51 #undef DEF_RTL_EXPR
  52
  53 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string.  */
  54
  55 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   NAME ,
  56
  57 const char * const rtx_name[NUM_RTX_CODE] = {
  58 #include "rtl.def"              /* rtl expressions are documented here */
  59 };
  60
  61 #undef DEF_RTL_EXPR
  62
  63 /* Indexed by rtx code, gives a sequence of operand-types for
  64    rtx's of that code.  The sequence is a C string in which
  65    each character describes one operand.  */
  66
  67 const char * const rtx_format[NUM_RTX_CODE] = {
  68   /* "*" undefined.
  69          can cause a warning message
  70      "0" field is unused (or used in a phase-dependent manner)
  71          prints nothing
  72      "i" an integer
  73          prints the integer
  74      "n" like "i", but prints entries from `note_insn_name'
  75      "w" an integer of width HOST_BITS_PER_WIDE_INT
  76          prints the integer
  77      "s" a pointer to a string
  78          prints the string
  79      "S" like "s", but optional:
  80          the containing rtx may end before this operand
  81      "T" like "s", but treated specially by the RTL reader;
  82          only found in machine description patterns.
  83      "e" a pointer to an rtl expression
  84          prints the expression
  85      "E" a pointer to a vector that points to a number of rtl expressions
  86          prints a list of the rtl expressions
  87      "V" like "E", but optional:
  88          the containing rtx may end before this operand
  89      "u" a pointer to another insn
  90          prints the uid of the insn.
  91      "b" is a pointer to a bitmap header.
  92      "B" is a basic block pointer.
  93      "t" is a tree pointer.  */
  94
  95 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   FORMAT ,
  96 #include "rtl.def"              /* rtl expressions are defined here */
  97 #undef DEF_RTL_EXPR
  98 };
  99
 100 /* Indexed by rtx code, gives a character representing the "class" of
 101    that rtx code.  See rtl.def for documentation on the defined classes.  */
 102
 103 const enum rtx_class rtx_class[NUM_RTX_CODE] = {
 104 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   CLASS,
 105 #include "rtl.def"              /* rtl expressions are defined here */
 106 #undef DEF_RTL_EXPR
 107 };
 108
 109 /* Indexed by rtx code, gives the size of the rtx in bytes.  */
 110
 111 const unsigned char rtx_code_size[NUM_RTX_CODE] = {
 112 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)                         \
 113   ((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE || (ENUM) == CONST_FIXED\
 114    ? RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (HOST_WIDE_INT)        \
 115    : RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (rtunion)),
 116
 117 #include "rtl.def"
 118 #undef DEF_RTL_EXPR
 119 };
 120
 121 /* Names for kinds of NOTEs and REG_NOTEs.  */
 122
 123 const char * const note_insn_name[NOTE_INSN_MAX] =
 124 {
 125 #define DEF_INSN_NOTE(NAME) #NAME,
 126 #include "insn-notes.def"
 127 #undef DEF_INSN_NOTE
 128 };
 129
 130 const char * const reg_note_name[REG_NOTE_MAX] =
 131 {
 132 #define DEF_REG_NOTE(NAME) #NAME,
 133 #include "reg-notes.def"
 134 #undef DEF_REG_NOTE
 135 };
 136
 137 #ifdef GATHER_STATISTICS
 138 static int rtx_alloc_counts[(int) LAST_AND_UNUSED_RTX_CODE];
 139 static int rtx_alloc_sizes[(int) LAST_AND_UNUSED_RTX_CODE];
 140 static int rtvec_alloc_counts;
 141 static int rtvec_alloc_sizes;
 142 #endif
 143
 144 \f
 145 /* Allocate an rtx vector of N elements.
 146    Store the length, and initialize all elements to zero.  */
 147
 148 rtvec
 149 rtvec_alloc (int n)
 150 {
 151   rtvec rt;
 152
 153   rt = ggc_alloc_rtvec (n);
 154   /* Clear out the vector.  */
 155   memset (&rt->elem[0], 0, n * sizeof (rtx));
 156
 157   PUT_NUM_ELEM (rt, n);
 158
 159 #ifdef GATHER_STATISTICS
 160   rtvec_alloc_counts++;
 161   rtvec_alloc_sizes += n * sizeof (rtx);
 162 #endif
 163
 164   return rt;
 165 }
 166
 167 /* Return the number of bytes occupied by rtx value X.  */
 168
 169 unsigned int
 170 rtx_size (const_rtx x)
 171 {
 172   if (GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_HAS_BLOCK_INFO_P (x))
 173     return RTX_HDR_SIZE + sizeof (struct block_symbol);
 174   return RTX_CODE_SIZE (GET_CODE (x));
 175 }
 176
 177 /* Allocate an rtx of code CODE.  The CODE is stored in the rtx;
 178    all the rest is initialized to zero.  */
 179
 180 rtx
 181 rtx_alloc_stat (RTX_CODE code MEM_STAT_DECL)
 182 {
 183   rtx rt;
 184
 185   rt = (rtx) ggc_alloc_zone_pass_stat (RTX_CODE_SIZE (code), &rtl_zone);
 186
 187   /* We want to clear everything up to the FLD array.  Normally, this
 188      is one int, but we don't want to assume that and it isn't very
 189      portable anyway; this is.  */
 190
 191   memset (rt, 0, RTX_HDR_SIZE);
 192   PUT_CODE (rt, code);
 193
 194 #ifdef GATHER_STATISTICS
 195   rtx_alloc_counts[code]++;
 196   rtx_alloc_sizes[code] += RTX_CODE_SIZE (code);
 197 #endif
 198
 199   return rt;
 200 }
 201
 202 \f
 203 /* Return true if ORIG is a sharable CONST.  */
 204
 205 bool
 206 shared_const_p (const_rtx orig)
 207 {
 208   gcc_assert (GET_CODE (orig) == CONST);
 209
 210   /* CONST can be shared if it contains a SYMBOL_REF.  If it contains
 211      a LABEL_REF, it isn't sharable.  */
 212   return (GET_CODE (XEXP (orig, 0)) == PLUS
 213           && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
 214           && CONST_INT_P(XEXP (XEXP (orig, 0), 1)));
 215 }
 216
 217
 218 /* Create a new copy of an rtx.
 219    Recursively copies the operands of the rtx,
 220    except for those few rtx codes that are sharable.  */
 221
 222 rtx
 223 copy_rtx (rtx orig)
 224 {
 225   rtx copy;
 226   int i, j;
 227   RTX_CODE code;
 228   const char *format_ptr;
 229
 230   code = GET_CODE (orig);
 231
 232   switch (code)
 233     {
 234     case REG:
 235     case CONST_INT:
 236     case CONST_DOUBLE:
 237     case CONST_FIXED:
 238     case CONST_VECTOR:
 239     case SYMBOL_REF:
 240     case CODE_LABEL:
 241     case PC:
 242     case CC0:
 243     case SCRATCH:
 244       /* SCRATCH must be shared because they represent distinct values.  */
 245       return orig;
 246     case CLOBBER:
 247       if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER)
 248         return orig;
 249       break;
 250
 251     case CONST:
 252       if (shared_const_p (orig))
 253         return orig;
 254       break;
 255
 256       /* A MEM with a constant address is not sharable.  The problem is that
 257          the constant address may need to be reloaded.  If the mem is shared,
 258          then reloading one copy of this mem will cause all copies to appear
 259          to have been reloaded.  */
 260
 261     default:
 262       break;
 263     }
 264
 265   /* Copy the various flags, fields, and other information.  We assume
 266      that all fields need copying, and then clear the fields that should
 267      not be copied.  That is the sensible default behavior, and forces
 268      us to explicitly document why we are *not* copying a flag.  */
 269   copy = shallow_copy_rtx (orig);
 270
 271   /* We do not copy the USED flag, which is used as a mark bit during
 272      walks over the RTL.  */
 273   RTX_FLAG (copy, used) = 0;
 274
 275   /* We do not copy FRAME_RELATED for INSNs.  */
 276   if (INSN_P (orig))
 277     RTX_FLAG (copy, frame_related) = 0;
 278   RTX_FLAG (copy, jump) = RTX_FLAG (orig, jump);
 279   RTX_FLAG (copy, call) = RTX_FLAG (orig, call);
 280
 281   format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
 282
 283   for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
 284     switch (*format_ptr++)
 285       {
 286       case 'e':
 287         if (XEXP (orig, i) != NULL)
 288           XEXP (copy, i) = copy_rtx (XEXP (orig, i));
 289         break;
 290
 291       case 'E':
 292       case 'V':
 293         if (XVEC (orig, i) != NULL)
 294           {
 295             XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
 296             for (j = 0; j < XVECLEN (copy, i); j++)
 297               XVECEXP (copy, i, j) = copy_rtx (XVECEXP (orig, i, j));
 298           }
 299         break;
 300
 301       case 't':
 302       case 'w':
 303       case 'i':
 304       case 's':
 305       case 'S':
 306       case 'T':
 307       case 'u':
 308       case 'B':
 309       case '0':
 310         /* These are left unchanged.  */
 311         break;
 312
 313       default:
 314         gcc_unreachable ();
 315       }
 316   return copy;
 317 }
 318
 319 /* Create a new copy of an rtx.  Only copy just one level.  */
 320
 321 rtx
 322 shallow_copy_rtx_stat (const_rtx orig MEM_STAT_DECL)
 323 {
 324   const unsigned int size = rtx_size (orig);
 325   rtx const copy = (rtx) ggc_alloc_zone_pass_stat (size, &rtl_zone);
 326   return (rtx) memcpy (copy, orig, size);
 327 }
 328 \f
 329 /* Nonzero when we are generating CONCATs.  */
 330 int generating_concat_p;
 331
 332 /* Nonzero when we are expanding trees to RTL.  */
 333 int currently_expanding_to_rtl;
 334
 335 \f
 336
 337 /* Same as rtx_equal_p, but call CB on each pair of rtx if CB is not NULL.
 338    When the callback returns true, we continue with the new pair.
 339    Whenever changing this function check if rtx_equal_p below doesn't need
 340    changing as well.  */
 341
 342 int
 343 rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
 344 {
 345   int i;
 346   int j;
 347   enum rtx_code code;
 348   const char *fmt;
 349   rtx nx, ny;
 350
 351   if (x == y)
 352     return 1;
 353   if (x == 0 || y == 0)
 354     return 0;
 355
 356   /* Invoke the callback first.  */
 357   if (cb != NULL
 358       && ((*cb) (&x, &y, &nx, &ny)))
 359     return rtx_equal_p_cb (nx, ny, cb);
 360
 361   code = GET_CODE (x);
 362   /* Rtx's of different codes cannot be equal.  */
 363   if (code != GET_CODE (y))
 364     return 0;
 365
 366   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
 367      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
 368
 369   if (GET_MODE (x) != GET_MODE (y))
 370     return 0;
 371
 372   /* Some RTL can be compared nonrecursively.  */
 373   switch (code)
 374     {
 375     case REG:
 376       return (REGNO (x) == REGNO (y));
 377
 378     case LABEL_REF:
 379       return XEXP (x, 0) == XEXP (y, 0);
 380
 381     case SYMBOL_REF:
 382       return XSTR (x, 0) == XSTR (y, 0);
 383
 384     case SCRATCH:
 385     case CONST_DOUBLE:
 386     case CONST_INT:
 387     case CONST_FIXED:
 388       return 0;
 389
 390     default:
 391       break;
 392     }
 393
 394   /* Compare the elements.  If any pair of corresponding elements
 395      fail to match, return 0 for the whole thing.  */
 396
 397   fmt = GET_RTX_FORMAT (code);
 398   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
 399     {
 400       switch (fmt[i])
 401         {
 402         case 'w':
 403           if (XWINT (x, i) != XWINT (y, i))
 404             return 0;
 405           break;
 406
 407         case 'n':
 408         case 'i':
 409           if (XINT (x, i) != XINT (y, i))
 410             return 0;
 411           break;
 412
 413         case 'V':
 414         case 'E':
 415           /* Two vectors must have the same length.  */
 416           if (XVECLEN (x, i) != XVECLEN (y, i))
 417             return 0;
 418
 419           /* And the corresponding elements must match.  */
 420           for (j = 0; j < XVECLEN (x, i); j++)
 421             if (rtx_equal_p_cb (XVECEXP (x, i, j),
 422                                 XVECEXP (y, i, j), cb) == 0)
 423               return 0;
 424           break;
 425
 426         case 'e':
 427           if (rtx_equal_p_cb (XEXP (x, i), XEXP (y, i), cb) == 0)
 428             return 0;
 429           break;
 430
 431         case 'S':
 432         case 's':
 433           if ((XSTR (x, i) || XSTR (y, i))
 434               && (! XSTR (x, i) || ! XSTR (y, i)
 435                   || strcmp (XSTR (x, i), XSTR (y, i))))
 436             return 0;
 437           break;
 438
 439         case 'u':
 440           /* These are just backpointers, so they don't matter.  */
 441           break;
 442
 443         case '0':
 444         case 't':
 445           break;
 446
 447           /* It is believed that rtx's at this level will never
 448              contain anything but integers and other rtx's,
 449              except for within LABEL_REFs and SYMBOL_REFs.  */
 450         default:
 451           gcc_unreachable ();
 452         }
 453     }
 454   return 1;
 455 }
 456
 457 /* Return 1 if X and Y are identical-looking rtx's.
 458    This is the Lisp function EQUAL for rtx arguments.
 459    Whenever changing this function check if rtx_equal_p_cb above doesn't need
 460    changing as well.  */
 461
 462 int
 463 rtx_equal_p (const_rtx x, const_rtx y)
 464 {
 465   int i;
 466   int j;
 467   enum rtx_code code;
 468   const char *fmt;
 469
 470   if (x == y)
 471     return 1;
 472   if (x == 0 || y == 0)
 473     return 0;
 474
 475   code = GET_CODE (x);
 476   /* Rtx's of different codes cannot be equal.  */
 477   if (code != GET_CODE (y))
 478     return 0;
 479
 480   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
 481      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
 482
 483   if (GET_MODE (x) != GET_MODE (y))
 484     return 0;
 485
 486   /* Some RTL can be compared nonrecursively.  */
 487   switch (code)
 488     {
 489     case REG:
 490       return (REGNO (x) == REGNO (y));
 491
 492     case LABEL_REF:
 493       return XEXP (x, 0) == XEXP (y, 0);
 494
 495     case SYMBOL_REF:
 496       return XSTR (x, 0) == XSTR (y, 0);
 497
 498     case SCRATCH:
 499     case CONST_DOUBLE:
 500     case CONST_INT:
 501     case CONST_FIXED:
 502       return 0;
 503
 504     default:
 505       break;
 506     }
 507
 508   /* Compare the elements.  If any pair of corresponding elements
 509      fail to match, return 0 for the whole thing.  */
 510
 511   fmt = GET_RTX_FORMAT (code);
 512   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
 513     {
 514       switch (fmt[i])
 515         {
 516         case 'w':
 517           if (XWINT (x, i) != XWINT (y, i))
 518             return 0;
 519           break;
 520
 521         case 'n':
 522         case 'i':
 523           if (XINT (x, i) != XINT (y, i))
 524             return 0;
 525           break;
 526
 527         case 'V':
 528         case 'E':
 529           /* Two vectors must have the same length.  */
 530           if (XVECLEN (x, i) != XVECLEN (y, i))
 531             return 0;
 532
 533           /* And the corresponding elements must match.  */
 534           for (j = 0; j < XVECLEN (x, i); j++)
 535             if (rtx_equal_p (XVECEXP (x, i, j),  XVECEXP (y, i, j)) == 0)
 536               return 0;
 537           break;
 538
 539         case 'e':
 540           if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0)
 541             return 0;
 542           break;
 543
 544         case 'S':
 545         case 's':
 546           if ((XSTR (x, i) || XSTR (y, i))
 547               && (! XSTR (x, i) || ! XSTR (y, i)
 548                   || strcmp (XSTR (x, i), XSTR (y, i))))
 549             return 0;
 550           break;
 551
 552         case 'u':
 553           /* These are just backpointers, so they don't matter.  */
 554           break;
 555
 556         case '0':
 557         case 't':
 558           break;
 559
 560           /* It is believed that rtx's at this level will never
 561              contain anything but integers and other rtx's,
 562              except for within LABEL_REFs and SYMBOL_REFs.  */
 563         default:
 564           gcc_unreachable ();
 565         }
 566     }
 567   return 1;
 568 }
 569
 570 void
 571 dump_rtx_statistics (void)
 572 {
 573 #ifdef GATHER_STATISTICS
 574   int i;
 575   int total_counts = 0;
 576   int total_sizes = 0;
 577   fprintf (stderr, "\nRTX Kind               Count      Bytes\n");
 578   fprintf (stderr, "---------------------------------------\n");
 579   for (i = 0; i < LAST_AND_UNUSED_RTX_CODE; i++)
 580     if (rtx_alloc_counts[i])
 581       {
 582         fprintf (stderr, "%-20s %7d %10d\n", GET_RTX_NAME (i),
 583                  rtx_alloc_counts[i], rtx_alloc_sizes[i]);
 584         total_counts += rtx_alloc_counts[i];
 585         total_sizes += rtx_alloc_sizes[i];
 586       }
 587   if (rtvec_alloc_counts)
 588     {
 589       fprintf (stderr, "%-20s %7d %10d\n", "rtvec",
 590                rtvec_alloc_counts, rtvec_alloc_sizes);
 591       total_counts += rtvec_alloc_counts;
 592       total_sizes += rtvec_alloc_sizes;
 593     }
 594   fprintf (stderr, "---------------------------------------\n");
 595   fprintf (stderr, "%-20s %7d %10d\n",
 596            "Total", total_counts, total_sizes);
 597   fprintf (stderr, "---------------------------------------\n");
 598 #endif
 599 }
 600 \f
 601 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
 602 void
 603 rtl_check_failed_bounds (const_rtx r, int n, const char *file, int line,
 604                          const char *func)
 605 {
 606   internal_error
 607     ("RTL check: access of elt %d of '%s' with last elt %d in %s, at %s:%d",
 608      n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r)) - 1,
 609      func, trim_filename (file), line);
 610 }
 611
 612 void
 613 rtl_check_failed_type1 (const_rtx r, int n, int c1, const char *file, int line,
 614                         const char *func)
 615 {
 616   internal_error
 617     ("RTL check: expected elt %d type '%c', have '%c' (rtx %s) in %s, at %s:%d",
 618      n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
 619      func, trim_filename (file), line);
 620 }
 621
 622 void
 623 rtl_check_failed_type2 (const_rtx r, int n, int c1, int c2, const char *file,
 624                         int line, const char *func)
 625 {
 626   internal_error
 627     ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s) in %s, at %s:%d",
 628      n, c1, c2, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
 629      func, trim_filename (file), line);
 630 }
 631
 632 void
 633 rtl_check_failed_code1 (const_rtx r, enum rtx_code code, const char *file,
 634                         int line, const char *func)
 635 {
 636   internal_error ("RTL check: expected code '%s', have '%s' in %s, at %s:%d",
 637                   GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)), func,
 638                   trim_filename (file), line);
 639 }
 640
 641 void
 642 rtl_check_failed_code2 (const_rtx r, enum rtx_code code1, enum rtx_code code2,
 643                         const char *file, int line, const char *func)
 644 {
 645   internal_error
 646     ("RTL check: expected code '%s' or '%s', have '%s' in %s, at %s:%d",
 647      GET_RTX_NAME (code1), GET_RTX_NAME (code2), GET_RTX_NAME (GET_CODE (r)),
 648      func, trim_filename (file), line);
 649 }
 650
 651 void
 652 rtl_check_failed_code_mode (const_rtx r, enum rtx_code code, enum machine_mode mode,
 653                             bool not_mode, const char *file, int line,
 654                             const char *func)
 655 {
 656   internal_error ((not_mode
 657                    ? ("RTL check: expected code '%s' and not mode '%s', "
 658                       "have code '%s' and mode '%s' in %s, at %s:%d")
 659                    : ("RTL check: expected code '%s' and mode '%s', "
 660                       "have code '%s' and mode '%s' in %s, at %s:%d")),
 661                   GET_RTX_NAME (code), GET_MODE_NAME (mode),
 662                   GET_RTX_NAME (GET_CODE (r)), GET_MODE_NAME (GET_MODE (r)),
 663                   func, trim_filename (file), line);
 664 }
 665
 666 /* Report that line LINE of FILE tried to access the block symbol fields
 667    of a non-block symbol.  FUNC is the function that contains the line.  */
 668
 669 void
 670 rtl_check_failed_block_symbol (const char *file, int line, const char *func)
 671 {
 672   internal_error
 673     ("RTL check: attempt to treat non-block symbol as a block symbol "
 674      "in %s, at %s:%d", func, trim_filename (file), line);
 675 }
 676
 677 /* XXX Maybe print the vector?  */
 678 void
 679 rtvec_check_failed_bounds (const_rtvec r, int n, const char *file, int line,
 680                            const char *func)
 681 {
 682   internal_error
 683     ("RTL check: access of elt %d of vector with last elt %d in %s, at %s:%d",
 684      n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);
 685 }
 686 #endif /* ENABLE_RTL_CHECKING */
 687
 688 #if defined ENABLE_RTL_FLAG_CHECKING
 689 void
 690 rtl_check_failed_flag (const char *name, const_rtx r, const char *file,
 691                        int line, const char *func)
 692 {
 693   internal_error
 694     ("RTL flag check: %s used with unexpected rtx code '%s' in %s, at %s:%d",
 695      name, GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);
 696 }
 697 #endif /* ENABLE_RTL_FLAG_CHECKING */