gcc/genopinit.c

   1 /* Generate code to initialize optabs from machine description.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001, 2002, 2003, 2004, 2005 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 2, 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 COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22
  23 #include "bconfig.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "rtl.h"
  28 #include "errors.h"
  29 #include "gensupport.h"
  30
  31
  32 /* Many parts of GCC use arrays that are indexed by machine mode and
  33    contain the insn codes for pattern in the MD file that perform a given
  34    operation on operands of that mode.
  35
  36    These patterns are present in the MD file with names that contain
  37    the mode(s) used and the name of the operation.  This program
  38    writes a function `init_all_optabs' that initializes the optabs with
  39    all the insn codes of the relevant patterns present in the MD file.
  40
  41    This array contains a list of optabs that need to be initialized.  Within
  42    each string, the name of the pattern to be matched against is delimited
  43    with $( and $).  In the string, $a and $b are used to match a short mode
  44    name (the part of the mode name not including `mode' and converted to
  45    lower-case).  When writing out the initializer, the entire string is
  46    used.  $A and $B are replaced with the full name of the mode; $a and $b
  47    are replaced with the short form of the name, as above.
  48
  49    If $N is present in the pattern, it means the two modes must be consecutive
  50    widths in the same mode class (e.g, QImode and HImode).  $I means that
  51    only full integer modes should be considered for the next mode, and $F
  52    means that only float modes should be considered.
  53    $P means that both full and partial integer modes should be considered.
  54
  55    $V means to emit 'v' if the first mode is a MODE_FLOAT mode.
  56
  57    For some optabs, we store the operation by RTL codes.  These are only
  58    used for comparisons.  In that case, $c and $C are the lower-case and
  59    upper-case forms of the comparison, respectively.  */
  60
  61 static const char * const optabs[] =
  62 { "sext_optab->handlers[$B][$A].insn_code = CODE_FOR_$(extend$a$b2$)",
  63   "zext_optab->handlers[$B][$A].insn_code = CODE_FOR_$(zero_extend$a$b2$)",
  64   "sfix_optab->handlers[$B][$A].insn_code = CODE_FOR_$(fix$F$a$I$b2$)",
  65   "ufix_optab->handlers[$B][$A].insn_code = CODE_FOR_$(fixuns$F$a$b2$)",
  66   "sfixtrunc_optab->handlers[$B][$A].insn_code = CODE_FOR_$(fix_trunc$F$a$I$b2$)",
  67   "ufixtrunc_optab->handlers[$B][$A].insn_code = CODE_FOR_$(fixuns_trunc$F$a$I$b2$)",
  68   "sfloat_optab->handlers[$B][$A].insn_code = CODE_FOR_$(float$I$a$F$b2$)",
  69   "ufloat_optab->handlers[$B][$A].insn_code = CODE_FOR_$(floatuns$I$a$F$b2$)",
  70   "trunc_optab->handlers[$B][$A].insn_code = CODE_FOR_$(trunc$a$b2$)",
  71   "add_optab->handlers[$A].insn_code = CODE_FOR_$(add$P$a3$)",
  72   "addv_optab->handlers[$A].insn_code =\n\
  73     add_optab->handlers[$A].insn_code = CODE_FOR_$(add$F$a3$)",
  74   "addv_optab->handlers[$A].insn_code = CODE_FOR_$(addv$I$a3$)",
  75   "sub_optab->handlers[$A].insn_code = CODE_FOR_$(sub$P$a3$)",
  76   "subv_optab->handlers[$A].insn_code =\n\
  77     sub_optab->handlers[$A].insn_code = CODE_FOR_$(sub$F$a3$)",
  78   "subv_optab->handlers[$A].insn_code = CODE_FOR_$(subv$I$a3$)",
  79   "smul_optab->handlers[$A].insn_code = CODE_FOR_$(mul$P$a3$)",
  80   "smulv_optab->handlers[$A].insn_code =\n\
  81     smul_optab->handlers[$A].insn_code = CODE_FOR_$(mul$F$a3$)",
  82   "smulv_optab->handlers[$A].insn_code = CODE_FOR_$(mulv$I$a3$)",
  83   "umul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(umul$a3_highpart$)",
  84   "smul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(smul$a3_highpart$)",
  85   "smul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(mul$a$b3$)$N",
  86   "umul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umul$a$b3$)$N",
  87   "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
  88   "sdivv_optab->handlers[$A].insn_code = CODE_FOR_$(div$V$I$a3$)",
  89   "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
  90   "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
  91   "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
  92   "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
  93   "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
  94   "fmod_optab->handlers[$A].insn_code = CODE_FOR_$(fmod$a3$)",
  95   "drem_optab->handlers[$A].insn_code = CODE_FOR_$(drem$a3$)",
  96   "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
  97   "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
  98   "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
  99   "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
 100   "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
 101   "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
 102   "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
 103   "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
 104   "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
 105   "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$a3$)",
 106   "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$a3$)",
 107   "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
 108   "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
 109   "pow_optab->handlers[$A].insn_code = CODE_FOR_$(pow$a3$)",
 110   "atan2_optab->handlers[$A].insn_code = CODE_FOR_$(atan2$a3$)",
 111   "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
 112   "negv_optab->handlers[$A].insn_code =\n\
 113     neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$F$a2$)",
 114   "negv_optab->handlers[$A].insn_code = CODE_FOR_$(negv$I$a2$)",
 115   "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
 116   "absv_optab->handlers[$A].insn_code =\n\
 117     abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$F$a2$)",
 118   "absv_optab->handlers[$A].insn_code = CODE_FOR_$(absv$I$a2$)",
 119   "copysign_optab->handlers[$A].insn_code = CODE_FOR_$(copysign$F$a3$)",
 120   "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
 121   "floor_optab->handlers[$A].insn_code = CODE_FOR_$(floor$a2$)",
 122   "lfloor_optab->handlers[$A].insn_code = CODE_FOR_$(lfloor$a2$)",
 123   "ceil_optab->handlers[$A].insn_code = CODE_FOR_$(ceil$a2$)",
 124   "lceil_optab->handlers[$A].insn_code = CODE_FOR_$(lceil$a2$)",
 125   "round_optab->handlers[$A].insn_code = CODE_FOR_$(round$a2$)",
 126   "btrunc_optab->handlers[$A].insn_code = CODE_FOR_$(btrunc$a2$)",
 127   "nearbyint_optab->handlers[$A].insn_code = CODE_FOR_$(nearbyint$a2$)",
 128   "rint_optab->handlers[$A].insn_code = CODE_FOR_$(rint$a2$)",
 129   "lrint_optab->handlers[$A].insn_code = CODE_FOR_$(lrint$a2$)",
 130   "sincos_optab->handlers[$A].insn_code = CODE_FOR_$(sincos$a3$)",
 131   "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
 132   "asin_optab->handlers[$A].insn_code = CODE_FOR_$(asin$a2$)",
 133   "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
 134   "acos_optab->handlers[$A].insn_code = CODE_FOR_$(acos$a2$)",
 135   "exp_optab->handlers[$A].insn_code = CODE_FOR_$(exp$a2$)",
 136   "exp10_optab->handlers[$A].insn_code = CODE_FOR_$(exp10$a2$)",
 137   "exp2_optab->handlers[$A].insn_code = CODE_FOR_$(exp2$a2$)",
 138   "expm1_optab->handlers[$A].insn_code = CODE_FOR_$(expm1$a2$)",
 139   "ldexp_optab->handlers[$A].insn_code = CODE_FOR_$(ldexp$a3$)",
 140   "logb_optab->handlers[$A].insn_code = CODE_FOR_$(logb$a2$)",
 141   "ilogb_optab->handlers[$A].insn_code = CODE_FOR_$(ilogb$a2$)",
 142   "log_optab->handlers[$A].insn_code = CODE_FOR_$(log$a2$)",
 143   "log10_optab->handlers[$A].insn_code = CODE_FOR_$(log10$a2$)",
 144   "log2_optab->handlers[$A].insn_code = CODE_FOR_$(log2$a2$)",
 145   "log1p_optab->handlers[$A].insn_code = CODE_FOR_$(log1p$a2$)",
 146   "tan_optab->handlers[$A].insn_code = CODE_FOR_$(tan$a2$)",
 147   "atan_optab->handlers[$A].insn_code = CODE_FOR_$(atan$a2$)",
 148   "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
 149   "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
 150   "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
 151   "clz_optab->handlers[$A].insn_code = CODE_FOR_$(clz$a2$)",
 152   "ctz_optab->handlers[$A].insn_code = CODE_FOR_$(ctz$a2$)",
 153   "popcount_optab->handlers[$A].insn_code = CODE_FOR_$(popcount$a2$)",
 154   "parity_optab->handlers[$A].insn_code = CODE_FOR_$(parity$a2$)",
 155   "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
 156   "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
 157   "movmisalign_optab->handlers[$A].insn_code = CODE_FOR_$(movmisalign$a$)",
 158   "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
 159   "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
 160   "addcc_optab->handlers[$A].insn_code = CODE_FOR_$(add$acc$)",
 161   "bcc_gen_fctn[$C] = gen_$(b$c$)",
 162   "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
 163   "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
 164   "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
 165   "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
 166   "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
 167   "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
 168   "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
 169   "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
 170   "movmem_optab[$A] = CODE_FOR_$(movmem$a$)",
 171   "clrmem_optab[$A] = CODE_FOR_$(clrmem$a$)",
 172   "cmpstr_optab[$A] = CODE_FOR_$(cmpstr$a$)",
 173   "cmpmem_optab[$A] = CODE_FOR_$(cmpmem$a$)",
 174   "sync_add_optab[$A] = CODE_FOR_$(sync_add$I$a$)",
 175   "sync_sub_optab[$A] = CODE_FOR_$(sync_sub$I$a$)",
 176   "sync_ior_optab[$A] = CODE_FOR_$(sync_ior$I$a$)",
 177   "sync_and_optab[$A] = CODE_FOR_$(sync_and$I$a$)",
 178   "sync_xor_optab[$A] = CODE_FOR_$(sync_xor$I$a$)",
 179   "sync_nand_optab[$A] = CODE_FOR_$(sync_nand$I$a$)",
 180   "sync_old_add_optab[$A] = CODE_FOR_$(sync_old_add$I$a$)",
 181   "sync_old_sub_optab[$A] = CODE_FOR_$(sync_old_sub$I$a$)",
 182   "sync_old_ior_optab[$A] = CODE_FOR_$(sync_old_ior$I$a$)",
 183   "sync_old_and_optab[$A] = CODE_FOR_$(sync_old_and$I$a$)",
 184   "sync_old_xor_optab[$A] = CODE_FOR_$(sync_old_xor$I$a$)",
 185   "sync_old_nand_optab[$A] = CODE_FOR_$(sync_old_nand$I$a$)",
 186   "sync_new_add_optab[$A] = CODE_FOR_$(sync_new_add$I$a$)",
 187   "sync_new_sub_optab[$A] = CODE_FOR_$(sync_new_sub$I$a$)",
 188   "sync_new_ior_optab[$A] = CODE_FOR_$(sync_new_ior$I$a$)",
 189   "sync_new_and_optab[$A] = CODE_FOR_$(sync_new_and$I$a$)",
 190   "sync_new_xor_optab[$A] = CODE_FOR_$(sync_new_xor$I$a$)",
 191   "sync_new_nand_optab[$A] = CODE_FOR_$(sync_new_nand$I$a$)",
 192   "sync_compare_and_swap[$A] = CODE_FOR_$(sync_compare_and_swap$I$a$)",
 193   "sync_compare_and_swap_cc[$A] = CODE_FOR_$(sync_compare_and_swap_cc$I$a$)",
 194   "sync_lock_test_and_set[$A] = CODE_FOR_$(sync_lock_test_and_set$I$a$)",
 195   "sync_lock_release[$A] = CODE_FOR_$(sync_lock_release$I$a$)",
 196   "vec_set_optab->handlers[$A].insn_code = CODE_FOR_$(vec_set$a$)",
 197   "vec_extract_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract$a$)",
 198   "vec_init_optab->handlers[$A].insn_code = CODE_FOR_$(vec_init$a$)",
 199   "vec_realign_load_optab->handlers[$A].insn_code = CODE_FOR_$(vec_realign_load_$a$)",
 200   "vcond_gen_code[$A] = CODE_FOR_$(vcond$a$)",
 201   "vcondu_gen_code[$A] = CODE_FOR_$(vcondu$a$)",
 202   "reduc_smax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smax_$a$)",
 203   "reduc_umax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umax_$a$)",
 204   "reduc_smin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smin_$a$)",
 205   "reduc_umin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umin_$a$)",
 206   "reduc_plus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_plus_$a$)"
 207 };
 208
 209 static void gen_insn (rtx);
 210
 211 static void
 212 gen_insn (rtx insn)
 213 {
 214   const char *name = XSTR (insn, 0);
 215   int m1 = 0, m2 = 0, op = 0;
 216   size_t pindex;
 217   int i;
 218   const char *np, *pp, *p, *q;
 219
 220   /* Don't mention instructions whose names are the null string.
 221      They are in the machine description just to be recognized.  */
 222   if (*name == 0)
 223     return;
 224
 225   /* See if NAME matches one of the patterns we have for the optabs we know
 226      about.  */
 227
 228   for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
 229     {
 230       int force_float = 0, force_int = 0, force_partial_int = 0;
 231       int force_consec = 0;
 232       int matches = 1;
 233
 234       for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
 235         ;
 236
 237       for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
 238            pp++)
 239         {
 240           if (*pp != '$')
 241             {
 242               if (*pp != *np++)
 243                 break;
 244             }
 245           else
 246             switch (*++pp)
 247               {
 248               case 'N':
 249                 force_consec = 1;
 250                 break;
 251               case 'I':
 252                 force_int = 1;
 253                 break;
 254               case 'P':
 255                 force_partial_int = 1;
 256                 break;
 257               case 'F':
 258                 force_float = 1;
 259                 break;
 260               case 'V':
 261                 break;
 262               case 'c':
 263                 for (op = 0; op < NUM_RTX_CODE; op++)
 264                   {
 265                     for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
 266                       if (*p != *q)
 267                         break;
 268
 269                     /* We have to be concerned about matching "gt" and
 270                        missing "gtu", e.g., so verify we have reached the
 271                        end of thing we are to match.  */
 272                     if (*p == 0 && *q == 0
 273                         && (GET_RTX_CLASS (op) == RTX_COMPARE
 274                             || GET_RTX_CLASS (op) == RTX_COMM_COMPARE))
 275                       break;
 276                   }
 277
 278                 if (op == NUM_RTX_CODE)
 279                   matches = 0;
 280                 else
 281                   np += strlen (GET_RTX_NAME(op));
 282                 break;
 283               case 'a':
 284               case 'b':
 285                 /* This loop will stop at the first prefix match, so
 286                    look through the modes in reverse order, in case
 287                    there are extra CC modes and CC is a prefix of the
 288                    CC modes (as it should be).  */
 289                 for (i = (MAX_MACHINE_MODE) - 1; i >= 0; i--)
 290                   {
 291                     for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
 292                       if (TOLOWER (*p) != *q)
 293                         break;
 294
 295                     if (*p == 0
 296                         && (! force_int || mode_class[i] == MODE_INT
 297                             || mode_class[i] == MODE_VECTOR_INT)
 298                         && (! force_partial_int
 299                             || mode_class[i] == MODE_INT
 300                             || mode_class[i] == MODE_PARTIAL_INT
 301                             || mode_class[i] == MODE_VECTOR_INT)
 302                         && (! force_float || mode_class[i] == MODE_FLOAT
 303                             || mode_class[i] == MODE_COMPLEX_FLOAT
 304                             || mode_class[i] == MODE_VECTOR_FLOAT))
 305                       break;
 306                   }
 307
 308                 if (i < 0)
 309                   matches = 0;
 310                 else if (*pp == 'a')
 311                   m1 = i, np += strlen (GET_MODE_NAME(i));
 312                 else
 313                   m2 = i, np += strlen (GET_MODE_NAME(i));
 314
 315                 force_int = force_partial_int = force_float = 0;
 316                 break;
 317
 318               default:
 319                 gcc_unreachable ();
 320               }
 321         }
 322
 323       if (matches && pp[0] == '$' && pp[1] == ')'
 324           && *np == 0
 325           && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
 326         break;
 327     }
 328
 329   if (pindex == ARRAY_SIZE (optabs))
 330     return;
 331
 332   /* We found a match.  If this pattern is only conditionally present,
 333      write out the "if" and two extra blanks.  */
 334
 335   if (*XSTR (insn, 2) != 0)
 336     printf ("  if (HAVE_%s)\n  ", name);
 337
 338   printf ("  ");
 339
 340   /* Now write out the initialization, making all required substitutions.  */
 341   for (pp = optabs[pindex]; *pp; pp++)
 342     {
 343       if (*pp != '$')
 344         putchar (*pp);
 345       else
 346         switch (*++pp)
 347           {
 348           case '(':  case ')':
 349           case 'I':  case 'F':  case 'N':
 350             break;
 351           case 'V':
 352             if (GET_MODE_CLASS (m1) == MODE_FLOAT)
 353               printf ("v");
 354             break;
 355           case 'a':
 356             for (np = GET_MODE_NAME(m1); *np; np++)
 357               putchar (TOLOWER (*np));
 358             break;
 359           case 'b':
 360             for (np = GET_MODE_NAME(m2); *np; np++)
 361               putchar (TOLOWER (*np));
 362             break;
 363           case 'A':
 364             printf ("%smode", GET_MODE_NAME(m1));
 365             break;
 366           case 'B':
 367             printf ("%smode", GET_MODE_NAME(m2));
 368             break;
 369           case 'c':
 370             printf ("%s", GET_RTX_NAME(op));
 371             break;
 372           case 'C':
 373             for (np = GET_RTX_NAME(op); *np; np++)
 374               putchar (TOUPPER (*np));
 375             break;
 376           }
 377     }
 378
 379   printf (";\n");
 380 }
 381
 382 extern int main (int, char **);
 383
 384 int
 385 main (int argc, char **argv)
 386 {
 387   rtx desc;
 388
 389   progname = "genopinit";
 390
 391   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
 392     return (FATAL_EXIT_CODE);
 393
 394   printf ("/* Generated automatically by the program `genopinit'\n\
 395 from the machine description file `md'.  */\n\n");
 396
 397   printf ("#include \"config.h\"\n");
 398   printf ("#include \"system.h\"\n");
 399   printf ("#include \"coretypes.h\"\n");
 400   printf ("#include \"tm.h\"\n");
 401   printf ("#include \"rtl.h\"\n");
 402   printf ("#include \"flags.h\"\n");
 403   printf ("#include \"insn-config.h\"\n");
 404   printf ("#include \"recog.h\"\n");
 405   printf ("#include \"expr.h\"\n");
 406   printf ("#include \"optabs.h\"\n");
 407   printf ("#include \"reload.h\"\n\n");
 408
 409   printf ("void\ninit_all_optabs (void)\n{\n");
 410
 411   puts ("\
 412 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 413   int i, j;\n\
 414 #endif\n");
 415
 416   /* Read the machine description.  */
 417
 418   while (1)
 419     {
 420       int line_no, insn_code_number = 0;
 421
 422       desc = read_md_rtx (&line_no, &insn_code_number);
 423       if (desc == NULL)
 424         break;
 425
 426       if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
 427         gen_insn (desc);
 428     }
 429
 430   puts ("\
 431 \n\
 432 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 433   /* This flag says the same insns that convert to a signed fixnum\n\
 434      also convert validly to an unsigned one.  */\n\
 435   for (i = 0; i < NUM_MACHINE_MODES; i++)\n\
 436     for (j = 0; j < NUM_MACHINE_MODES; j++)\n\
 437       ufixtrunc_optab->handlers[i][j].insn_code\n\
 438       = sfixtrunc_optab->handlers[i][j].insn_code;\n\
 439 #endif\n\
 440 }");
 441
 442   fflush (stdout);
 443   return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
 444 }
 445
 446 /* Define this so we can link with print-rtl.o to get debug_rtx function.  */
 447 const char *
 448 get_insn_name (int code ATTRIBUTE_UNUSED)
 449 {
 450   return NULL;
 451 }