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$)",
 152   "bswap_optab->handlers[$A].insn_code = CODE_FOR_$(bswap$a2$)",
 153   "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
 154   "clz_optab->handlers[$A].insn_code = CODE_FOR_$(clz$a2$)",
 155   "ctz_optab->handlers[$A].insn_code = CODE_FOR_$(ctz$a2$)",
 156   "popcount_optab->handlers[$A].insn_code = CODE_FOR_$(popcount$a2$)",
 157   "parity_optab->handlers[$A].insn_code = CODE_FOR_$(parity$a2$)",
 158   "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
 159   "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
 160   "movmisalign_optab->handlers[$A].insn_code = CODE_FOR_$(movmisalign$a$)",
 161   "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
 162   "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
 163   "addcc_optab->handlers[$A].insn_code = CODE_FOR_$(add$acc$)",
 164   "bcc_gen_fctn[$C] = gen_$(b$c$)",
 165   "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
 166   "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
 167   "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
 168   "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
 169   "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
 170   "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
 171   "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
 172   "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
 173   "movmem_optab[$A] = CODE_FOR_$(movmem$a$)",
 174   "cmpstr_optab[$A] = CODE_FOR_$(cmpstr$a$)",
 175   "cmpstrn_optab[$A] = CODE_FOR_$(cmpstrn$a$)",
 176   "cmpmem_optab[$A] = CODE_FOR_$(cmpmem$a$)",
 177   "setmem_optab[$A] = CODE_FOR_$(setmem$a$)",
 178   "sync_add_optab[$A] = CODE_FOR_$(sync_add$I$a$)",
 179   "sync_sub_optab[$A] = CODE_FOR_$(sync_sub$I$a$)",
 180   "sync_ior_optab[$A] = CODE_FOR_$(sync_ior$I$a$)",
 181   "sync_and_optab[$A] = CODE_FOR_$(sync_and$I$a$)",
 182   "sync_xor_optab[$A] = CODE_FOR_$(sync_xor$I$a$)",
 183   "sync_nand_optab[$A] = CODE_FOR_$(sync_nand$I$a$)",
 184   "sync_old_add_optab[$A] = CODE_FOR_$(sync_old_add$I$a$)",
 185   "sync_old_sub_optab[$A] = CODE_FOR_$(sync_old_sub$I$a$)",
 186   "sync_old_ior_optab[$A] = CODE_FOR_$(sync_old_ior$I$a$)",
 187   "sync_old_and_optab[$A] = CODE_FOR_$(sync_old_and$I$a$)",
 188   "sync_old_xor_optab[$A] = CODE_FOR_$(sync_old_xor$I$a$)",
 189   "sync_old_nand_optab[$A] = CODE_FOR_$(sync_old_nand$I$a$)",
 190   "sync_new_add_optab[$A] = CODE_FOR_$(sync_new_add$I$a$)",
 191   "sync_new_sub_optab[$A] = CODE_FOR_$(sync_new_sub$I$a$)",
 192   "sync_new_ior_optab[$A] = CODE_FOR_$(sync_new_ior$I$a$)",
 193   "sync_new_and_optab[$A] = CODE_FOR_$(sync_new_and$I$a$)",
 194   "sync_new_xor_optab[$A] = CODE_FOR_$(sync_new_xor$I$a$)",
 195   "sync_new_nand_optab[$A] = CODE_FOR_$(sync_new_nand$I$a$)",
 196   "sync_compare_and_swap[$A] = CODE_FOR_$(sync_compare_and_swap$I$a$)",
 197   "sync_compare_and_swap_cc[$A] = CODE_FOR_$(sync_compare_and_swap_cc$I$a$)",
 198   "sync_lock_test_and_set[$A] = CODE_FOR_$(sync_lock_test_and_set$I$a$)",
 199   "sync_lock_release[$A] = CODE_FOR_$(sync_lock_release$I$a$)",
 200   "vec_set_optab->handlers[$A].insn_code = CODE_FOR_$(vec_set$a$)",
 201   "vec_extract_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract$a$)",
 202   "vec_extract_even_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract_even$a$)",
 203   "vec_extract_odd_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract_odd$a$)",
 204   "vec_interleave_high_optab->handlers[$A].insn_code = CODE_FOR_$(vec_interleave_high$a$)",
 205   "vec_interleave_low_optab->handlers[$A].insn_code = CODE_FOR_$(vec_interleave_low$a$)",
 206   "vec_init_optab->handlers[$A].insn_code = CODE_FOR_$(vec_init$a$)",
 207   "vec_shl_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shl_$a$)",
 208   "vec_shr_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shr_$a$)",
 209   "vec_realign_load_optab->handlers[$A].insn_code = CODE_FOR_$(vec_realign_load_$a$)",
 210   "vcond_gen_code[$A] = CODE_FOR_$(vcond$a$)",
 211   "vcondu_gen_code[$A] = CODE_FOR_$(vcondu$a$)",
 212   "ssum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_ssum$I$a3$)",
 213   "usum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_usum$I$a3$)",
 214   "udot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(udot_prod$I$a$)",
 215   "sdot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(sdot_prod$I$a$)",
 216   "reduc_smax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smax_$a$)",
 217   "reduc_umax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umax_$a$)",
 218   "reduc_smin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smin_$a$)",
 219   "reduc_umin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umin_$a$)",
 220   "reduc_splus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_splus_$a$)" ,
 221   "reduc_uplus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_uplus_$a$)",
 222   "vec_widen_umult_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_umult_hi_$a$)",
 223   "vec_widen_umult_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_umult_lo_$a$)",
 224   "vec_widen_smult_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_smult_hi_$a$)",
 225   "vec_widen_smult_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_smult_lo_$a$)",
 226   "vec_unpacks_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_hi_$a$)",
 227   "vec_unpacks_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_lo_$a$)",
 228   "vec_unpacku_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_hi_$a$)",
 229   "vec_unpacku_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_lo_$a$)",
 230   "vec_pack_mod_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_mod_$a$)",
 231   "vec_pack_ssat_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_ssat_$a$)",  "vec_pack_usat_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_usat_$a$)"
 232 };
 233
 234 static void gen_insn (rtx);
 235
 236 static void
 237 gen_insn (rtx insn)
 238 {
 239   const char *name = XSTR (insn, 0);
 240   int m1 = 0, m2 = 0, op = 0;
 241   size_t pindex;
 242   int i;
 243   const char *np, *pp, *p, *q;
 244
 245   /* Don't mention instructions whose names are the null string.
 246      They are in the machine description just to be recognized.  */
 247   if (*name == 0)
 248     return;
 249
 250   /* See if NAME matches one of the patterns we have for the optabs we know
 251      about.  */
 252
 253   for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
 254     {
 255       int force_float = 0, force_int = 0, force_partial_int = 0;
 256       int force_consec = 0;
 257       int matches = 1;
 258
 259       for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
 260         ;
 261
 262       for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
 263            pp++)
 264         {
 265           if (*pp != '$')
 266             {
 267               if (*pp != *np++)
 268                 break;
 269             }
 270           else
 271             switch (*++pp)
 272               {
 273               case 'N':
 274                 force_consec = 1;
 275                 break;
 276               case 'I':
 277                 force_int = 1;
 278                 break;
 279               case 'P':
 280                 force_partial_int = 1;
 281                 break;
 282               case 'F':
 283                 force_float = 1;
 284                 break;
 285               case 'V':
 286                 break;
 287               case 'c':
 288                 for (op = 0; op < NUM_RTX_CODE; op++)
 289                   {
 290                     for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
 291                       if (*p != *q)
 292                         break;
 293
 294                     /* We have to be concerned about matching "gt" and
 295                        missing "gtu", e.g., so verify we have reached the
 296                        end of thing we are to match.  */
 297                     if (*p == 0 && *q == 0
 298                         && (GET_RTX_CLASS (op) == RTX_COMPARE
 299                             || GET_RTX_CLASS (op) == RTX_COMM_COMPARE))
 300                       break;
 301                   }
 302
 303                 if (op == NUM_RTX_CODE)
 304                   matches = 0;
 305                 else
 306                   np += strlen (GET_RTX_NAME(op));
 307                 break;
 308               case 'a':
 309               case 'b':
 310                 /* This loop will stop at the first prefix match, so
 311                    look through the modes in reverse order, in case
 312                    there are extra CC modes and CC is a prefix of the
 313                    CC modes (as it should be).  */
 314                 for (i = (MAX_MACHINE_MODE) - 1; i >= 0; i--)
 315                   {
 316                     for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
 317                       if (TOLOWER (*p) != *q)
 318                         break;
 319
 320                     if (*p == 0
 321                         && (! force_int || mode_class[i] == MODE_INT
 322                             || mode_class[i] == MODE_VECTOR_INT)
 323                         && (! force_partial_int
 324                             || mode_class[i] == MODE_INT
 325                             || mode_class[i] == MODE_PARTIAL_INT
 326                             || mode_class[i] == MODE_VECTOR_INT)
 327                         && (! force_float
 328                             || mode_class[i] == MODE_FLOAT
 329                             || mode_class[i] == MODE_DECIMAL_FLOAT
 330                             || mode_class[i] == MODE_COMPLEX_FLOAT
 331                             || mode_class[i] == MODE_VECTOR_FLOAT))
 332                       break;
 333                   }
 334
 335                 if (i < 0)
 336                   matches = 0;
 337                 else if (*pp == 'a')
 338                   m1 = i, np += strlen (GET_MODE_NAME(i));
 339                 else
 340                   m2 = i, np += strlen (GET_MODE_NAME(i));
 341
 342                 force_int = force_partial_int = force_float = 0;
 343                 break;
 344
 345               default:
 346                 gcc_unreachable ();
 347               }
 348         }
 349
 350       if (matches && pp[0] == '$' && pp[1] == ')'
 351           && *np == 0
 352           && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
 353         break;
 354     }
 355
 356   if (pindex == ARRAY_SIZE (optabs))
 357     return;
 358
 359   /* We found a match.  If this pattern is only conditionally present,
 360      write out the "if" and two extra blanks.  */
 361
 362   if (*XSTR (insn, 2) != 0)
 363     printf ("  if (HAVE_%s)\n  ", name);
 364
 365   printf ("  ");
 366
 367   /* Now write out the initialization, making all required substitutions.  */
 368   for (pp = optabs[pindex]; *pp; pp++)
 369     {
 370       if (*pp != '$')
 371         putchar (*pp);
 372       else
 373         switch (*++pp)
 374           {
 375           case '(':  case ')':
 376           case 'I':  case 'F':  case 'N':
 377             break;
 378           case 'V':
 379             if (SCALAR_FLOAT_MODE_P (m1))
 380               printf ("v");
 381             break;
 382           case 'a':
 383             for (np = GET_MODE_NAME(m1); *np; np++)
 384               putchar (TOLOWER (*np));
 385             break;
 386           case 'b':
 387             for (np = GET_MODE_NAME(m2); *np; np++)
 388               putchar (TOLOWER (*np));
 389             break;
 390           case 'A':
 391             printf ("%smode", GET_MODE_NAME(m1));
 392             break;
 393           case 'B':
 394             printf ("%smode", GET_MODE_NAME(m2));
 395             break;
 396           case 'c':
 397             printf ("%s", GET_RTX_NAME(op));
 398             break;
 399           case 'C':
 400             for (np = GET_RTX_NAME(op); *np; np++)
 401               putchar (TOUPPER (*np));
 402             break;
 403           }
 404     }
 405
 406   printf (";\n");
 407 }
 408
 409 extern int main (int, char **);
 410
 411 int
 412 main (int argc, char **argv)
 413 {
 414   rtx desc;
 415
 416   progname = "genopinit";
 417
 418   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
 419     return (FATAL_EXIT_CODE);
 420
 421   printf ("/* Generated automatically by the program `genopinit'\n\
 422 from the machine description file `md'.  */\n\n");
 423
 424   printf ("#include \"config.h\"\n");
 425   printf ("#include \"system.h\"\n");
 426   printf ("#include \"coretypes.h\"\n");
 427   printf ("#include \"tm.h\"\n");
 428   printf ("#include \"rtl.h\"\n");
 429   printf ("#include \"flags.h\"\n");
 430   printf ("#include \"insn-config.h\"\n");
 431   printf ("#include \"recog.h\"\n");
 432   printf ("#include \"expr.h\"\n");
 433   printf ("#include \"optabs.h\"\n");
 434   printf ("#include \"reload.h\"\n\n");
 435
 436   printf ("void\ninit_all_optabs (void)\n{\n");
 437
 438   puts ("\
 439 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 440   int i, j;\n\
 441 #endif\n");
 442
 443   /* Read the machine description.  */
 444
 445   while (1)
 446     {
 447       int line_no, insn_code_number = 0;
 448
 449       desc = read_md_rtx (&line_no, &insn_code_number);
 450       if (desc == NULL)
 451         break;
 452
 453       if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
 454         gen_insn (desc);
 455     }
 456
 457   puts ("\
 458 \n\
 459 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 460   /* This flag says the same insns that convert to a signed fixnum\n\
 461      also convert validly to an unsigned one.  */\n\
 462   for (i = 0; i < NUM_MACHINE_MODES; i++)\n\
 463     for (j = 0; j < NUM_MACHINE_MODES; j++)\n\
 464       ufixtrunc_optab->handlers[i][j].insn_code\n\
 465       = sfixtrunc_optab->handlers[i][j].insn_code;\n\
 466 #endif\n\
 467 }");
 468
 469   fflush (stdout);
 470   return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
 471 }