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, 2006 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, 51 Franklin Street, Fifth Floor, Boston, MA
  20 02110-1301, 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   "usmul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(usmul$a$b3$)$N",
  88   "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
  89   "sdivv_optab->handlers[$A].insn_code = CODE_FOR_$(div$V$I$a3$)",
  90   "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
  91   "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
  92   "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
  93   "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
  94   "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
  95   "fmod_optab->handlers[$A].insn_code = CODE_FOR_$(fmod$a3$)",
  96   "remainder_optab->handlers[$A].insn_code = CODE_FOR_$(remainder$a3$)",
  97   "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
  98   "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
  99   "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
 100   "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
 101   "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
 102   "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
 103   "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
 104   "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
 105   "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
 106   "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$a3$)",
 107   "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$a3$)",
 108   "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
 109   "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
 110   "pow_optab->handlers[$A].insn_code = CODE_FOR_$(pow$a3$)",
 111   "atan2_optab->handlers[$A].insn_code = CODE_FOR_$(atan2$a3$)",
 112   "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
 113   "negv_optab->handlers[$A].insn_code =\n\
 114     neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$F$a2$)",
 115   "negv_optab->handlers[$A].insn_code = CODE_FOR_$(negv$I$a2$)",
 116   "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
 117   "absv_optab->handlers[$A].insn_code =\n\
 118     abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$F$a2$)",
 119   "absv_optab->handlers[$A].insn_code = CODE_FOR_$(absv$I$a2$)",
 120   "copysign_optab->handlers[$A].insn_code = CODE_FOR_$(copysign$F$a3$)",
 121   "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
 122   "floor_optab->handlers[$A].insn_code = CODE_FOR_$(floor$a2$)",
 123   "lfloor_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lfloor$F$a$I$b2$)",
 124   "ceil_optab->handlers[$A].insn_code = CODE_FOR_$(ceil$a2$)",
 125   "lceil_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lceil$F$a$I$b2$)",
 126   "round_optab->handlers[$A].insn_code = CODE_FOR_$(round$a2$)",
 127   "btrunc_optab->handlers[$A].insn_code = CODE_FOR_$(btrunc$a2$)",
 128   "nearbyint_optab->handlers[$A].insn_code = CODE_FOR_$(nearbyint$a2$)",
 129   "rint_optab->handlers[$A].insn_code = CODE_FOR_$(rint$a2$)",
 130   "lrint_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lrint$F$a$I$b2$)",
 131   "lround_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lround$F$a$I$b2$)",
 132   "sincos_optab->handlers[$A].insn_code = CODE_FOR_$(sincos$a3$)",
 133   "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
 134   "asin_optab->handlers[$A].insn_code = CODE_FOR_$(asin$a2$)",
 135   "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
 136   "acos_optab->handlers[$A].insn_code = CODE_FOR_$(acos$a2$)",
 137   "exp_optab->handlers[$A].insn_code = CODE_FOR_$(exp$a2$)",
 138   "exp10_optab->handlers[$A].insn_code = CODE_FOR_$(exp10$a2$)",
 139   "exp2_optab->handlers[$A].insn_code = CODE_FOR_$(exp2$a2$)",
 140   "expm1_optab->handlers[$A].insn_code = CODE_FOR_$(expm1$a2$)",
 141   "ldexp_optab->handlers[$A].insn_code = CODE_FOR_$(ldexp$a3$)",
 142   "logb_optab->handlers[$A].insn_code = CODE_FOR_$(logb$a2$)",
 143   "ilogb_optab->handlers[$A].insn_code = CODE_FOR_$(ilogb$a2$)",
 144   "log_optab->handlers[$A].insn_code = CODE_FOR_$(log$a2$)",
 145   "log10_optab->handlers[$A].insn_code = CODE_FOR_$(log10$a2$)",
 146   "log2_optab->handlers[$A].insn_code = CODE_FOR_$(log2$a2$)",
 147   "log1p_optab->handlers[$A].insn_code = CODE_FOR_$(log1p$a2$)",
 148   "tan_optab->handlers[$A].insn_code = CODE_FOR_$(tan$a2$)",
 149   "atan_optab->handlers[$A].insn_code = CODE_FOR_$(atan$a2$)",
 150   "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
 151   "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
 152   "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
 153   "clz_optab->handlers[$A].insn_code = CODE_FOR_$(clz$a2$)",
 154   "ctz_optab->handlers[$A].insn_code = CODE_FOR_$(ctz$a2$)",
 155   "popcount_optab->handlers[$A].insn_code = CODE_FOR_$(popcount$a2$)",
 156   "parity_optab->handlers[$A].insn_code = CODE_FOR_$(parity$a2$)",
 157   "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
 158   "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
 159   "movmisalign_optab->handlers[$A].insn_code = CODE_FOR_$(movmisalign$a$)",
 160   "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
 161   "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
 162   "addcc_optab->handlers[$A].insn_code = CODE_FOR_$(add$acc$)",
 163   "bcc_gen_fctn[$C] = gen_$(b$c$)",
 164   "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
 165   "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
 166   "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
 167   "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
 168   "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
 169   "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
 170   "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
 171   "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
 172   "movmem_optab[$A] = CODE_FOR_$(movmem$a$)",
 173   "cmpstr_optab[$A] = CODE_FOR_$(cmpstr$a$)",
 174   "cmpstrn_optab[$A] = CODE_FOR_$(cmpstrn$a$)",
 175   "cmpmem_optab[$A] = CODE_FOR_$(cmpmem$a$)",
 176   "setmem_optab[$A] = CODE_FOR_$(setmem$a$)",
 177   "sync_add_optab[$A] = CODE_FOR_$(sync_add$I$a$)",
 178   "sync_sub_optab[$A] = CODE_FOR_$(sync_sub$I$a$)",
 179   "sync_ior_optab[$A] = CODE_FOR_$(sync_ior$I$a$)",
 180   "sync_and_optab[$A] = CODE_FOR_$(sync_and$I$a$)",
 181   "sync_xor_optab[$A] = CODE_FOR_$(sync_xor$I$a$)",
 182   "sync_nand_optab[$A] = CODE_FOR_$(sync_nand$I$a$)",
 183   "sync_old_add_optab[$A] = CODE_FOR_$(sync_old_add$I$a$)",
 184   "sync_old_sub_optab[$A] = CODE_FOR_$(sync_old_sub$I$a$)",
 185   "sync_old_ior_optab[$A] = CODE_FOR_$(sync_old_ior$I$a$)",
 186   "sync_old_and_optab[$A] = CODE_FOR_$(sync_old_and$I$a$)",
 187   "sync_old_xor_optab[$A] = CODE_FOR_$(sync_old_xor$I$a$)",
 188   "sync_old_nand_optab[$A] = CODE_FOR_$(sync_old_nand$I$a$)",
 189   "sync_new_add_optab[$A] = CODE_FOR_$(sync_new_add$I$a$)",
 190   "sync_new_sub_optab[$A] = CODE_FOR_$(sync_new_sub$I$a$)",
 191   "sync_new_ior_optab[$A] = CODE_FOR_$(sync_new_ior$I$a$)",
 192   "sync_new_and_optab[$A] = CODE_FOR_$(sync_new_and$I$a$)",
 193   "sync_new_xor_optab[$A] = CODE_FOR_$(sync_new_xor$I$a$)",
 194   "sync_new_nand_optab[$A] = CODE_FOR_$(sync_new_nand$I$a$)",
 195   "sync_compare_and_swap[$A] = CODE_FOR_$(sync_compare_and_swap$I$a$)",
 196   "sync_compare_and_swap_cc[$A] = CODE_FOR_$(sync_compare_and_swap_cc$I$a$)",
 197   "sync_lock_test_and_set[$A] = CODE_FOR_$(sync_lock_test_and_set$I$a$)",
 198   "sync_lock_release[$A] = CODE_FOR_$(sync_lock_release$I$a$)",
 199   "vec_set_optab->handlers[$A].insn_code = CODE_FOR_$(vec_set$a$)",
 200   "vec_extract_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract$a$)",
 201   "vec_init_optab->handlers[$A].insn_code = CODE_FOR_$(vec_init$a$)",
 202   "vec_shl_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shl_$a$)",
 203   "vec_shr_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shr_$a$)",
 204   "vec_realign_load_optab->handlers[$A].insn_code = CODE_FOR_$(vec_realign_load_$a$)",
 205   "vcond_gen_code[$A] = CODE_FOR_$(vcond$a$)",
 206   "vcondu_gen_code[$A] = CODE_FOR_$(vcondu$a$)",
 207   "ssum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_ssum$I$a3$)",
 208   "usum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_usum$I$a3$)",
 209   "udot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(udot_prod$I$a$)",
 210   "sdot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(sdot_prod$I$a$)",
 211   "reduc_smax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smax_$a$)",
 212   "reduc_umax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umax_$a$)",
 213   "reduc_smin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smin_$a$)",
 214   "reduc_umin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umin_$a$)",
 215   "reduc_splus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_splus_$a$)" ,
 216   "reduc_uplus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_uplus_$a$)"
 217 };
 218
 219 static void gen_insn (rtx);
 220
 221 static void
 222 gen_insn (rtx insn)
 223 {
 224   const char *name = XSTR (insn, 0);
 225   int m1 = 0, m2 = 0, op = 0;
 226   size_t pindex;
 227   int i;
 228   const char *np, *pp, *p, *q;
 229
 230   /* Don't mention instructions whose names are the null string.
 231      They are in the machine description just to be recognized.  */
 232   if (*name == 0)
 233     return;
 234
 235   /* See if NAME matches one of the patterns we have for the optabs we know
 236      about.  */
 237
 238   for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
 239     {
 240       int force_float = 0, force_int = 0, force_partial_int = 0;
 241       int force_consec = 0;
 242       int matches = 1;
 243
 244       for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
 245         ;
 246
 247       for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
 248            pp++)
 249         {
 250           if (*pp != '$')
 251             {
 252               if (*pp != *np++)
 253                 break;
 254             }
 255           else
 256             switch (*++pp)
 257               {
 258               case 'N':
 259                 force_consec = 1;
 260                 break;
 261               case 'I':
 262                 force_int = 1;
 263                 break;
 264               case 'P':
 265                 force_partial_int = 1;
 266                 break;
 267               case 'F':
 268                 force_float = 1;
 269                 break;
 270               case 'V':
 271                 break;
 272               case 'c':
 273                 for (op = 0; op < NUM_RTX_CODE; op++)
 274                   {
 275                     for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
 276                       if (*p != *q)
 277                         break;
 278
 279                     /* We have to be concerned about matching "gt" and
 280                        missing "gtu", e.g., so verify we have reached the
 281                        end of thing we are to match.  */
 282                     if (*p == 0 && *q == 0
 283                         && (GET_RTX_CLASS (op) == RTX_COMPARE
 284                             || GET_RTX_CLASS (op) == RTX_COMM_COMPARE))
 285                       break;
 286                   }
 287
 288                 if (op == NUM_RTX_CODE)
 289                   matches = 0;
 290                 else
 291                   np += strlen (GET_RTX_NAME(op));
 292                 break;
 293               case 'a':
 294               case 'b':
 295                 /* This loop will stop at the first prefix match, so
 296                    look through the modes in reverse order, in case
 297                    there are extra CC modes and CC is a prefix of the
 298                    CC modes (as it should be).  */
 299                 for (i = (MAX_MACHINE_MODE) - 1; i >= 0; i--)
 300                   {
 301                     for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
 302                       if (TOLOWER (*p) != *q)
 303                         break;
 304
 305                     if (*p == 0
 306                         && (! force_int || mode_class[i] == MODE_INT
 307                             || mode_class[i] == MODE_VECTOR_INT)
 308                         && (! force_partial_int
 309                             || mode_class[i] == MODE_INT
 310                             || mode_class[i] == MODE_PARTIAL_INT
 311                             || mode_class[i] == MODE_VECTOR_INT)
 312                         && (! force_float
 313                             || mode_class[i] == MODE_FLOAT
 314                             || mode_class[i] == MODE_DECIMAL_FLOAT
 315                             || mode_class[i] == MODE_COMPLEX_FLOAT
 316                             || mode_class[i] == MODE_VECTOR_FLOAT))
 317                       break;
 318                   }
 319
 320                 if (i < 0)
 321                   matches = 0;
 322                 else if (*pp == 'a')
 323                   m1 = i, np += strlen (GET_MODE_NAME(i));
 324                 else
 325                   m2 = i, np += strlen (GET_MODE_NAME(i));
 326
 327                 force_int = force_partial_int = force_float = 0;
 328                 break;
 329
 330               default:
 331                 gcc_unreachable ();
 332               }
 333         }
 334
 335       if (matches && pp[0] == '$' && pp[1] == ')'
 336           && *np == 0
 337           && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
 338         break;
 339     }
 340
 341   if (pindex == ARRAY_SIZE (optabs))
 342     return;
 343
 344   /* We found a match.  If this pattern is only conditionally present,
 345      write out the "if" and two extra blanks.  */
 346
 347   if (*XSTR (insn, 2) != 0)
 348     printf ("  if (HAVE_%s)\n  ", name);
 349
 350   printf ("  ");
 351
 352   /* Now write out the initialization, making all required substitutions.  */
 353   for (pp = optabs[pindex]; *pp; pp++)
 354     {
 355       if (*pp != '$')
 356         putchar (*pp);
 357       else
 358         switch (*++pp)
 359           {
 360           case '(':  case ')':
 361           case 'I':  case 'F':  case 'N':
 362             break;
 363           case 'V':
 364             if (SCALAR_FLOAT_MODE_P (m1))
 365               printf ("v");
 366             break;
 367           case 'a':
 368             for (np = GET_MODE_NAME(m1); *np; np++)
 369               putchar (TOLOWER (*np));
 370             break;
 371           case 'b':
 372             for (np = GET_MODE_NAME(m2); *np; np++)
 373               putchar (TOLOWER (*np));
 374             break;
 375           case 'A':
 376             printf ("%smode", GET_MODE_NAME(m1));
 377             break;
 378           case 'B':
 379             printf ("%smode", GET_MODE_NAME(m2));
 380             break;
 381           case 'c':
 382             printf ("%s", GET_RTX_NAME(op));
 383             break;
 384           case 'C':
 385             for (np = GET_RTX_NAME(op); *np; np++)
 386               putchar (TOUPPER (*np));
 387             break;
 388           }
 389     }
 390
 391   printf (";\n");
 392 }
 393
 394 extern int main (int, char **);
 395
 396 int
 397 main (int argc, char **argv)
 398 {
 399   rtx desc;
 400
 401   progname = "genopinit";
 402
 403   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
 404     return (FATAL_EXIT_CODE);
 405
 406   printf ("/* Generated automatically by the program `genopinit'\n\
 407 from the machine description file `md'.  */\n\n");
 408
 409   printf ("#include \"config.h\"\n");
 410   printf ("#include \"system.h\"\n");
 411   printf ("#include \"coretypes.h\"\n");
 412   printf ("#include \"tm.h\"\n");
 413   printf ("#include \"rtl.h\"\n");
 414   printf ("#include \"flags.h\"\n");
 415   printf ("#include \"insn-config.h\"\n");
 416   printf ("#include \"recog.h\"\n");
 417   printf ("#include \"expr.h\"\n");
 418   printf ("#include \"optabs.h\"\n");
 419   printf ("#include \"reload.h\"\n\n");
 420
 421   printf ("void\ninit_all_optabs (void)\n{\n");
 422
 423   puts ("\
 424 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 425   int i, j;\n\
 426 #endif\n");
 427
 428   /* Read the machine description.  */
 429
 430   while (1)
 431     {
 432       int line_no, insn_code_number = 0;
 433
 434       desc = read_md_rtx (&line_no, &insn_code_number);
 435       if (desc == NULL)
 436         break;
 437
 438       if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
 439         gen_insn (desc);
 440     }
 441
 442   puts ("\
 443 \n\
 444 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 445   /* This flag says the same insns that convert to a signed fixnum\n\
 446      also convert validly to an unsigned one.  */\n\
 447   for (i = 0; i < NUM_MACHINE_MODES; i++)\n\
 448     for (j = 0; j < NUM_MACHINE_MODES; j++)\n\
 449       ufixtrunc_optab->handlers[i][j].insn_code\n\
 450       = sfixtrunc_optab->handlers[i][j].insn_code;\n\
 451 #endif\n\
 452 }");
 453
 454   fflush (stdout);
 455   return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
 456 }