gcc/rtl.c

   1 /* RTL utility routines.
   2    Copyright (C) 1987-2014 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 /* This file is compiled twice: once for the generator programs
  21    once for the compiler.  */
  22 #ifdef GENERATOR_FILE
  23 #include "bconfig.h"
  24 #else
  25 #include "config.h"
  26 #endif
  27
  28 #include "system.h"
  29 #include "coretypes.h"
  30 #include "tm.h"
  31 #include "rtl.h"
  32 #include "ggc.h"
  33 #ifdef GENERATOR_FILE
  34 # include "errors.h"
  35 #else
  36 # include "diagnostic-core.h"
  37 #endif
  38
  39 \f
  40 /* Indexed by rtx code, gives number of operands for an rtx with that code.
  41    Does NOT include rtx header data (code and links).  */
  42
  43 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   sizeof FORMAT - 1 ,
  44
  45 const unsigned char rtx_length[NUM_RTX_CODE] = {
  46 #include "rtl.def"
  47 };
  48
  49 #undef DEF_RTL_EXPR
  50
  51 /* Indexed by rtx code, gives the name of that kind of rtx, as a C string.  */
  52
  53 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   NAME ,
  54
  55 const char * const rtx_name[NUM_RTX_CODE] = {
  56 #include "rtl.def"              /* rtl expressions are documented here */
  57 };
  58
  59 #undef DEF_RTL_EXPR
  60
  61 /* Indexed by rtx code, gives a sequence of operand-types for
  62    rtx's of that code.  The sequence is a C string in which
  63    each character describes one operand.  */
  64
  65 const char * const rtx_format[NUM_RTX_CODE] = {
  66   /* "*" undefined.
  67          can cause a warning message
  68      "0" field is unused (or used in a phase-dependent manner)
  69          prints nothing
  70      "i" an integer
  71          prints the integer
  72      "n" like "i", but prints entries from `note_insn_name'
  73      "w" an integer of width HOST_BITS_PER_WIDE_INT
  74          prints the integer
  75      "s" a pointer to a string
  76          prints the string
  77      "S" like "s", but optional:
  78          the containing rtx may end before this operand
  79      "T" like "s", but treated specially by the RTL reader;
  80          only found in machine description patterns.
  81      "e" a pointer to an rtl expression
  82          prints the expression
  83      "E" a pointer to a vector that points to a number of rtl expressions
  84          prints a list of the rtl expressions
  85      "V" like "E", but optional:
  86          the containing rtx may end before this operand
  87      "u" a pointer to another insn
  88          prints the uid of the insn.
  89      "b" is a pointer to a bitmap header.
  90      "B" is a basic block pointer.
  91      "t" is a tree pointer.  */
  92
  93 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   FORMAT ,
  94 #include "rtl.def"              /* rtl expressions are defined here */
  95 #undef DEF_RTL_EXPR
  96 };
  97
  98 /* Indexed by rtx code, gives a character representing the "class" of
  99    that rtx code.  See rtl.def for documentation on the defined classes.  */
 100
 101 const enum rtx_class rtx_class[NUM_RTX_CODE] = {
 102 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)   CLASS,
 103 #include "rtl.def"              /* rtl expressions are defined here */
 104 #undef DEF_RTL_EXPR
 105 };
 106
 107 /* Indexed by rtx code, gives the size of the rtx in bytes.  */
 108
 109 const unsigned char rtx_code_size[NUM_RTX_CODE] = {
 110 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS)                         \
 111   (((ENUM) == CONST_INT || (ENUM) == CONST_DOUBLE                       \
 112     || (ENUM) == CONST_FIXED)                                           \
 113    ? RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (HOST_WIDE_INT)        \
 114    : RTX_HDR_SIZE + (sizeof FORMAT - 1) * sizeof (rtunion)),
 115
 116 #include "rtl.def"
 117 #undef DEF_RTL_EXPR
 118 };
 119
 120 /* Names for kinds of NOTEs and REG_NOTEs.  */
 121
 122 const char * const note_insn_name[NOTE_INSN_MAX] =
 123 {
 124 #define DEF_INSN_NOTE(NAME) #NAME,
 125 #include "insn-notes.def"
 126 #undef DEF_INSN_NOTE
 127 };
 128
 129 const char * const reg_note_name[REG_NOTE_MAX] =
 130 {
 131 #define DEF_REG_NOTE(NAME) #NAME,
 132 #include "reg-notes.def"
 133 #undef DEF_REG_NOTE
 134 };
 135
 136 static int rtx_alloc_counts[(int) LAST_AND_UNUSED_RTX_CODE];
 137 static int rtx_alloc_sizes[(int) LAST_AND_UNUSED_RTX_CODE];
 138 static int rtvec_alloc_counts;
 139 static int rtvec_alloc_sizes;
 140
 141 \f
 142 /* Allocate an rtx vector of N elements.
 143    Store the length, and initialize all elements to zero.  */
 144
 145 rtvec
 146 rtvec_alloc (int n)
 147 {
 148   rtvec rt;
 149
 150   rt = ggc_alloc_rtvec_sized (n);
 151   /* Clear out the vector.  */
 152   memset (&rt->elem[0], 0, n * sizeof (rtx));
 153
 154   PUT_NUM_ELEM (rt, n);
 155
 156   if (GATHER_STATISTICS)
 157     {
 158       rtvec_alloc_counts++;
 159       rtvec_alloc_sizes += n * sizeof (rtx);
 160     }
 161
 162   return rt;
 163 }
 164
 165 /* Create a bitwise copy of VEC.  */
 166
 167 rtvec
 168 shallow_copy_rtvec (rtvec vec)
 169 {
 170   rtvec newvec;
 171   int n;
 172
 173   n = GET_NUM_ELEM (vec);
 174   newvec = rtvec_alloc (n);
 175   memcpy (&newvec->elem[0], &vec->elem[0], sizeof (rtx) * n);
 176   return newvec;
 177 }
 178
 179 /* Return the number of bytes occupied by rtx value X.  */
 180
 181 unsigned int
 182 rtx_size (const_rtx x)
 183 {
 184   if (GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_HAS_BLOCK_INFO_P (x))
 185     return RTX_HDR_SIZE + sizeof (struct block_symbol);
 186   return RTX_CODE_SIZE (GET_CODE (x));
 187 }
 188
 189 /* Allocate an rtx of code CODE.  The CODE is stored in the rtx;
 190    all the rest is initialized to zero.  */
 191
 192 rtx
 193 rtx_alloc_stat (RTX_CODE code MEM_STAT_DECL)
 194 {
 195   rtx rt = ggc_alloc_rtx_def_stat (RTX_CODE_SIZE (code) PASS_MEM_STAT);
 196
 197   /* We want to clear everything up to the FLD array.  Normally, this
 198      is one int, but we don't want to assume that and it isn't very
 199      portable anyway; this is.  */
 200
 201   memset (rt, 0, RTX_HDR_SIZE);
 202   PUT_CODE (rt, code);
 203
 204   if (GATHER_STATISTICS)
 205     {
 206       rtx_alloc_counts[code]++;
 207       rtx_alloc_sizes[code] += RTX_CODE_SIZE (code);
 208     }
 209
 210   return rt;
 211 }
 212
 213 \f
 214 /* Return true if ORIG is a sharable CONST.  */
 215
 216 bool
 217 shared_const_p (const_rtx orig)
 218 {
 219   gcc_assert (GET_CODE (orig) == CONST);
 220
 221   /* CONST can be shared if it contains a SYMBOL_REF.  If it contains
 222      a LABEL_REF, it isn't sharable.  */
 223   return (GET_CODE (XEXP (orig, 0)) == PLUS
 224           && GET_CODE (XEXP (XEXP (orig, 0), 0)) == SYMBOL_REF
 225           && CONST_INT_P (XEXP (XEXP (orig, 0), 1)));
 226 }
 227
 228
 229 /* Create a new copy of an rtx.
 230    Recursively copies the operands of the rtx,
 231    except for those few rtx codes that are sharable.  */
 232
 233 rtx
 234 copy_rtx (rtx orig)
 235 {
 236   rtx copy;
 237   int i, j;
 238   RTX_CODE code;
 239   const char *format_ptr;
 240
 241   code = GET_CODE (orig);
 242
 243   switch (code)
 244     {
 245     case REG:
 246     case DEBUG_EXPR:
 247     case VALUE:
 248     CASE_CONST_ANY:
 249     case SYMBOL_REF:
 250     case CODE_LABEL:
 251     case PC:
 252     case CC0:
 253     case RETURN:
 254     case SIMPLE_RETURN:
 255     case SCRATCH:
 256       /* SCRATCH must be shared because they represent distinct values.  */
 257       return orig;
 258     case CLOBBER:
 259       /* Share clobbers of hard registers (like cc0), but do not share pseudo reg
 260          clobbers or clobbers of hard registers that originated as pseudos.
 261          This is needed to allow safe register renaming.  */
 262       if (REG_P (XEXP (orig, 0)) && REGNO (XEXP (orig, 0)) < FIRST_PSEUDO_REGISTER
 263           && ORIGINAL_REGNO (XEXP (orig, 0)) == REGNO (XEXP (orig, 0)))
 264         return orig;
 265       break;
 266
 267     case CONST:
 268       if (shared_const_p (orig))
 269         return orig;
 270       break;
 271
 272       /* A MEM with a constant address is not sharable.  The problem is that
 273          the constant address may need to be reloaded.  If the mem is shared,
 274          then reloading one copy of this mem will cause all copies to appear
 275          to have been reloaded.  */
 276
 277     default:
 278       break;
 279     }
 280
 281   /* Copy the various flags, fields, and other information.  We assume
 282      that all fields need copying, and then clear the fields that should
 283      not be copied.  That is the sensible default behavior, and forces
 284      us to explicitly document why we are *not* copying a flag.  */
 285   copy = shallow_copy_rtx (orig);
 286
 287   /* We do not copy the USED flag, which is used as a mark bit during
 288      walks over the RTL.  */
 289   RTX_FLAG (copy, used) = 0;
 290
 291   format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
 292
 293   for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
 294     switch (*format_ptr++)
 295       {
 296       case 'e':
 297         if (XEXP (orig, i) != NULL)
 298           XEXP (copy, i) = copy_rtx (XEXP (orig, i));
 299         break;
 300
 301       case 'E':
 302       case 'V':
 303         if (XVEC (orig, i) != NULL)
 304           {
 305             XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
 306             for (j = 0; j < XVECLEN (copy, i); j++)
 307               XVECEXP (copy, i, j) = copy_rtx (XVECEXP (orig, i, j));
 308           }
 309         break;
 310
 311       case 't':
 312       case 'w':
 313       case 'i':
 314       case 's':
 315       case 'S':
 316       case 'T':
 317       case 'u':
 318       case 'B':
 319       case '0':
 320         /* These are left unchanged.  */
 321         break;
 322
 323       default:
 324         gcc_unreachable ();
 325       }
 326   return copy;
 327 }
 328
 329 /* Create a new copy of an rtx.  Only copy just one level.  */
 330
 331 rtx
 332 shallow_copy_rtx_stat (const_rtx orig MEM_STAT_DECL)
 333 {
 334   const unsigned int size = rtx_size (orig);
 335   rtx const copy = ggc_alloc_rtx_def_stat (size PASS_MEM_STAT);
 336   return (rtx) memcpy (copy, orig, size);
 337 }
 338 \f
 339 /* Nonzero when we are generating CONCATs.  */
 340 int generating_concat_p;
 341
 342 /* Nonzero when we are expanding trees to RTL.  */
 343 int currently_expanding_to_rtl;
 344
 345 \f
 346
 347 /* Same as rtx_equal_p, but call CB on each pair of rtx if CB is not NULL.
 348    When the callback returns true, we continue with the new pair.
 349    Whenever changing this function check if rtx_equal_p below doesn't need
 350    changing as well.  */
 351
 352 int
 353 rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
 354 {
 355   int i;
 356   int j;
 357   enum rtx_code code;
 358   const char *fmt;
 359   rtx nx, ny;
 360
 361   if (x == y)
 362     return 1;
 363   if (x == 0 || y == 0)
 364     return 0;
 365
 366   /* Invoke the callback first.  */
 367   if (cb != NULL
 368       && ((*cb) (&x, &y, &nx, &ny)))
 369     return rtx_equal_p_cb (nx, ny, cb);
 370
 371   code = GET_CODE (x);
 372   /* Rtx's of different codes cannot be equal.  */
 373   if (code != GET_CODE (y))
 374     return 0;
 375
 376   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
 377      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
 378
 379   if (GET_MODE (x) != GET_MODE (y))
 380     return 0;
 381
 382   /* MEMs referring to different address space are not equivalent.  */
 383   if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
 384     return 0;
 385
 386   /* Some RTL can be compared nonrecursively.  */
 387   switch (code)
 388     {
 389     case REG:
 390       return (REGNO (x) == REGNO (y));
 391
 392     case LABEL_REF:
 393       return XEXP (x, 0) == XEXP (y, 0);
 394
 395     case SYMBOL_REF:
 396       return XSTR (x, 0) == XSTR (y, 0);
 397
 398     case DEBUG_EXPR:
 399     case VALUE:
 400     case SCRATCH:
 401     CASE_CONST_UNIQUE:
 402       return 0;
 403
 404     case DEBUG_IMPLICIT_PTR:
 405       return DEBUG_IMPLICIT_PTR_DECL (x)
 406              == DEBUG_IMPLICIT_PTR_DECL (y);
 407
 408     case DEBUG_PARAMETER_REF:
 409       return DEBUG_PARAMETER_REF_DECL (x)
 410              == DEBUG_PARAMETER_REF_DECL (x);
 411
 412     case ENTRY_VALUE:
 413       return rtx_equal_p_cb (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y), cb);
 414
 415     default:
 416       break;
 417     }
 418
 419   /* Compare the elements.  If any pair of corresponding elements
 420      fail to match, return 0 for the whole thing.  */
 421
 422   fmt = GET_RTX_FORMAT (code);
 423   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
 424     {
 425       switch (fmt[i])
 426         {
 427         case 'w':
 428           if (XWINT (x, i) != XWINT (y, i))
 429             return 0;
 430           break;
 431
 432         case 'n':
 433         case 'i':
 434           if (XINT (x, i) != XINT (y, i))
 435             {
 436 #ifndef GENERATOR_FILE
 437               if (((code == ASM_OPERANDS && i == 6)
 438                    || (code == ASM_INPUT && i == 1))
 439                   && XINT (x, i) == XINT (y, i))
 440                 break;
 441 #endif
 442               return 0;
 443             }
 444           break;
 445
 446         case 'V':
 447         case 'E':
 448           /* Two vectors must have the same length.  */
 449           if (XVECLEN (x, i) != XVECLEN (y, i))
 450             return 0;
 451
 452           /* And the corresponding elements must match.  */
 453           for (j = 0; j < XVECLEN (x, i); j++)
 454             if (rtx_equal_p_cb (XVECEXP (x, i, j),
 455                                 XVECEXP (y, i, j), cb) == 0)
 456               return 0;
 457           break;
 458
 459         case 'e':
 460           if (rtx_equal_p_cb (XEXP (x, i), XEXP (y, i), cb) == 0)
 461             return 0;
 462           break;
 463
 464         case 'S':
 465         case 's':
 466           if ((XSTR (x, i) || XSTR (y, i))
 467               && (! XSTR (x, i) || ! XSTR (y, i)
 468                   || strcmp (XSTR (x, i), XSTR (y, i))))
 469             return 0;
 470           break;
 471
 472         case 'u':
 473           /* These are just backpointers, so they don't matter.  */
 474           break;
 475
 476         case '0':
 477         case 't':
 478           break;
 479
 480           /* It is believed that rtx's at this level will never
 481              contain anything but integers and other rtx's,
 482              except for within LABEL_REFs and SYMBOL_REFs.  */
 483         default:
 484           gcc_unreachable ();
 485         }
 486     }
 487   return 1;
 488 }
 489
 490 /* Return 1 if X and Y are identical-looking rtx's.
 491    This is the Lisp function EQUAL for rtx arguments.
 492    Whenever changing this function check if rtx_equal_p_cb above doesn't need
 493    changing as well.  */
 494
 495 int
 496 rtx_equal_p (const_rtx x, const_rtx y)
 497 {
 498   int i;
 499   int j;
 500   enum rtx_code code;
 501   const char *fmt;
 502
 503   if (x == y)
 504     return 1;
 505   if (x == 0 || y == 0)
 506     return 0;
 507
 508   code = GET_CODE (x);
 509   /* Rtx's of different codes cannot be equal.  */
 510   if (code != GET_CODE (y))
 511     return 0;
 512
 513   /* (MULT:SI x y) and (MULT:HI x y) are NOT equivalent.
 514      (REG:SI x) and (REG:HI x) are NOT equivalent.  */
 515
 516   if (GET_MODE (x) != GET_MODE (y))
 517     return 0;
 518
 519   /* MEMs referring to different address space are not equivalent.  */
 520   if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
 521     return 0;
 522
 523   /* Some RTL can be compared nonrecursively.  */
 524   switch (code)
 525     {
 526     case REG:
 527       return (REGNO (x) == REGNO (y));
 528
 529     case LABEL_REF:
 530       return XEXP (x, 0) == XEXP (y, 0);
 531
 532     case SYMBOL_REF:
 533       return XSTR (x, 0) == XSTR (y, 0);
 534
 535     case DEBUG_EXPR:
 536     case VALUE:
 537     case SCRATCH:
 538     CASE_CONST_UNIQUE:
 539       return 0;
 540
 541     case DEBUG_IMPLICIT_PTR:
 542       return DEBUG_IMPLICIT_PTR_DECL (x)
 543              == DEBUG_IMPLICIT_PTR_DECL (y);
 544
 545     case DEBUG_PARAMETER_REF:
 546       return DEBUG_PARAMETER_REF_DECL (x)
 547              == DEBUG_PARAMETER_REF_DECL (y);
 548
 549     case ENTRY_VALUE:
 550       return rtx_equal_p (ENTRY_VALUE_EXP (x), ENTRY_VALUE_EXP (y));
 551
 552     default:
 553       break;
 554     }
 555
 556   /* Compare the elements.  If any pair of corresponding elements
 557      fail to match, return 0 for the whole thing.  */
 558
 559   fmt = GET_RTX_FORMAT (code);
 560   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
 561     {
 562       switch (fmt[i])
 563         {
 564         case 'w':
 565           if (XWINT (x, i) != XWINT (y, i))
 566             return 0;
 567           break;
 568
 569         case 'n':
 570         case 'i':
 571           if (XINT (x, i) != XINT (y, i))
 572             {
 573 #ifndef GENERATOR_FILE
 574               if (((code == ASM_OPERANDS && i == 6)
 575                    || (code == ASM_INPUT && i == 1))
 576                   && XINT (x, i) == XINT (y, i))
 577                 break;
 578 #endif
 579               return 0;
 580             }
 581           break;
 582
 583         case 'V':
 584         case 'E':
 585           /* Two vectors must have the same length.  */
 586           if (XVECLEN (x, i) != XVECLEN (y, i))
 587             return 0;
 588
 589           /* And the corresponding elements must match.  */
 590           for (j = 0; j < XVECLEN (x, i); j++)
 591             if (rtx_equal_p (XVECEXP (x, i, j),  XVECEXP (y, i, j)) == 0)
 592               return 0;
 593           break;
 594
 595         case 'e':
 596           if (rtx_equal_p (XEXP (x, i), XEXP (y, i)) == 0)
 597             return 0;
 598           break;
 599
 600         case 'S':
 601         case 's':
 602           if ((XSTR (x, i) || XSTR (y, i))
 603               && (! XSTR (x, i) || ! XSTR (y, i)
 604                   || strcmp (XSTR (x, i), XSTR (y, i))))
 605             return 0;
 606           break;
 607
 608         case 'u':
 609           /* These are just backpointers, so they don't matter.  */
 610           break;
 611
 612         case '0':
 613         case 't':
 614           break;
 615
 616           /* It is believed that rtx's at this level will never
 617              contain anything but integers and other rtx's,
 618              except for within LABEL_REFs and SYMBOL_REFs.  */
 619         default:
 620           gcc_unreachable ();
 621         }
 622     }
 623   return 1;
 624 }
 625
 626 /* Iteratively hash rtx X.  */
 627
 628 hashval_t
 629 iterative_hash_rtx (const_rtx x, hashval_t hash)
 630 {
 631   enum rtx_code code;
 632   enum machine_mode mode;
 633   int i, j;
 634   const char *fmt;
 635
 636   if (x == NULL_RTX)
 637     return hash;
 638   code = GET_CODE (x);
 639   hash = iterative_hash_object (code, hash);
 640   mode = GET_MODE (x);
 641   hash = iterative_hash_object (mode, hash);
 642   switch (code)
 643     {
 644     case REG:
 645       i = REGNO (x);
 646       return iterative_hash_object (i, hash);
 647     case CONST_INT:
 648       return iterative_hash_object (INTVAL (x), hash);
 649     case SYMBOL_REF:
 650       if (XSTR (x, 0))
 651         return iterative_hash (XSTR (x, 0), strlen (XSTR (x, 0)) + 1,
 652                                hash);
 653       return hash;
 654     case LABEL_REF:
 655     case DEBUG_EXPR:
 656     case VALUE:
 657     case SCRATCH:
 658     case CONST_DOUBLE:
 659     case CONST_FIXED:
 660     case DEBUG_IMPLICIT_PTR:
 661     case DEBUG_PARAMETER_REF:
 662       return hash;
 663     default:
 664       break;
 665     }
 666
 667   fmt = GET_RTX_FORMAT (code);
 668   for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
 669     switch (fmt[i])
 670       {
 671       case 'w':
 672         hash = iterative_hash_object (XWINT (x, i), hash);
 673         break;
 674       case 'n':
 675       case 'i':
 676         hash = iterative_hash_object (XINT (x, i), hash);
 677         break;
 678       case 'V':
 679       case 'E':
 680         j = XVECLEN (x, i);
 681         hash = iterative_hash_object (j, hash);
 682         for (j = 0; j < XVECLEN (x, i); j++)
 683           hash = iterative_hash_rtx (XVECEXP (x, i, j), hash);
 684         break;
 685       case 'e':
 686         hash = iterative_hash_rtx (XEXP (x, i), hash);
 687         break;
 688       case 'S':
 689       case 's':
 690         if (XSTR (x, i))
 691           hash = iterative_hash (XSTR (x, 0), strlen (XSTR (x, 0)) + 1,
 692                                  hash);
 693         break;
 694       default:
 695         break;
 696       }
 697   return hash;
 698 }
 699
 700 void
 701 dump_rtx_statistics (void)
 702 {
 703   int i;
 704   int total_counts = 0;
 705   int total_sizes = 0;
 706
 707   if (! GATHER_STATISTICS)
 708     {
 709       fprintf (stderr, "No RTX statistics\n");
 710       return;
 711     }
 712
 713   fprintf (stderr, "\nRTX Kind               Count      Bytes\n");
 714   fprintf (stderr, "---------------------------------------\n");
 715   for (i = 0; i < LAST_AND_UNUSED_RTX_CODE; i++)
 716     if (rtx_alloc_counts[i])
 717       {
 718         fprintf (stderr, "%-20s %7d %10d\n", GET_RTX_NAME (i),
 719                  rtx_alloc_counts[i], rtx_alloc_sizes[i]);
 720         total_counts += rtx_alloc_counts[i];
 721         total_sizes += rtx_alloc_sizes[i];
 722       }
 723   if (rtvec_alloc_counts)
 724     {
 725       fprintf (stderr, "%-20s %7d %10d\n", "rtvec",
 726                rtvec_alloc_counts, rtvec_alloc_sizes);
 727       total_counts += rtvec_alloc_counts;
 728       total_sizes += rtvec_alloc_sizes;
 729     }
 730   fprintf (stderr, "---------------------------------------\n");
 731   fprintf (stderr, "%-20s %7d %10d\n",
 732            "Total", total_counts, total_sizes);
 733   fprintf (stderr, "---------------------------------------\n");
 734 }
 735 \f
 736 #if defined ENABLE_RTL_CHECKING && (GCC_VERSION >= 2007)
 737 void
 738 rtl_check_failed_bounds (const_rtx r, int n, const char *file, int line,
 739                          const char *func)
 740 {
 741   internal_error
 742     ("RTL check: access of elt %d of '%s' with last elt %d in %s, at %s:%d",
 743      n, GET_RTX_NAME (GET_CODE (r)), GET_RTX_LENGTH (GET_CODE (r)) - 1,
 744      func, trim_filename (file), line);
 745 }
 746
 747 void
 748 rtl_check_failed_type1 (const_rtx r, int n, int c1, const char *file, int line,
 749                         const char *func)
 750 {
 751   internal_error
 752     ("RTL check: expected elt %d type '%c', have '%c' (rtx %s) in %s, at %s:%d",
 753      n, c1, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
 754      func, trim_filename (file), line);
 755 }
 756
 757 void
 758 rtl_check_failed_type2 (const_rtx r, int n, int c1, int c2, const char *file,
 759                         int line, const char *func)
 760 {
 761   internal_error
 762     ("RTL check: expected elt %d type '%c' or '%c', have '%c' (rtx %s) in %s, at %s:%d",
 763      n, c1, c2, GET_RTX_FORMAT (GET_CODE (r))[n], GET_RTX_NAME (GET_CODE (r)),
 764      func, trim_filename (file), line);
 765 }
 766
 767 void
 768 rtl_check_failed_code1 (const_rtx r, enum rtx_code code, const char *file,
 769                         int line, const char *func)
 770 {
 771   internal_error ("RTL check: expected code '%s', have '%s' in %s, at %s:%d",
 772                   GET_RTX_NAME (code), GET_RTX_NAME (GET_CODE (r)), func,
 773                   trim_filename (file), line);
 774 }
 775
 776 void
 777 rtl_check_failed_code2 (const_rtx r, enum rtx_code code1, enum rtx_code code2,
 778                         const char *file, int line, const char *func)
 779 {
 780   internal_error
 781     ("RTL check: expected code '%s' or '%s', have '%s' in %s, at %s:%d",
 782      GET_RTX_NAME (code1), GET_RTX_NAME (code2), GET_RTX_NAME (GET_CODE (r)),
 783      func, trim_filename (file), line);
 784 }
 785
 786 void
 787 rtl_check_failed_code_mode (const_rtx r, enum rtx_code code, enum machine_mode mode,
 788                             bool not_mode, const char *file, int line,
 789                             const char *func)
 790 {
 791   internal_error ((not_mode
 792                    ? ("RTL check: expected code '%s' and not mode '%s', "
 793                       "have code '%s' and mode '%s' in %s, at %s:%d")
 794                    : ("RTL check: expected code '%s' and mode '%s', "
 795                       "have code '%s' and mode '%s' in %s, at %s:%d")),
 796                   GET_RTX_NAME (code), GET_MODE_NAME (mode),
 797                   GET_RTX_NAME (GET_CODE (r)), GET_MODE_NAME (GET_MODE (r)),
 798                   func, trim_filename (file), line);
 799 }
 800
 801 /* Report that line LINE of FILE tried to access the block symbol fields
 802    of a non-block symbol.  FUNC is the function that contains the line.  */
 803
 804 void
 805 rtl_check_failed_block_symbol (const char *file, int line, const char *func)
 806 {
 807   internal_error
 808     ("RTL check: attempt to treat non-block symbol as a block symbol "
 809      "in %s, at %s:%d", func, trim_filename (file), line);
 810 }
 811
 812 /* XXX Maybe print the vector?  */
 813 void
 814 rtvec_check_failed_bounds (const_rtvec r, int n, const char *file, int line,
 815                            const char *func)
 816 {
 817   internal_error
 818     ("RTL check: access of elt %d of vector with last elt %d in %s, at %s:%d",
 819      n, GET_NUM_ELEM (r) - 1, func, trim_filename (file), line);
 820 }
 821 #endif /* ENABLE_RTL_CHECKING */
 822
 823 #if defined ENABLE_RTL_FLAG_CHECKING
 824 void
 825 rtl_check_failed_flag (const char *name, const_rtx r, const char *file,
 826                        int line, const char *func)
 827 {
 828   internal_error
 829     ("RTL flag check: %s used with unexpected rtx code '%s' in %s, at %s:%d",
 830      name, GET_RTX_NAME (GET_CODE (r)), func, trim_filename (file), line);
 831 }
 832 #endif /* ENABLE_RTL_FLAG_CHECKING */