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   "smadd_widen_optab->handlers[$B].insn_code = CODE_FOR_$(madd$a$b4$)$N",
  89   "umadd_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umadd$a$b4$)$N",
  90   "smsub_widen_optab->handlers[$B].insn_code = CODE_FOR_$(msub$a$b4$)$N",
  91   "umsub_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umsub$a$b4$)$N",
  92   "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
  93   "sdivv_optab->handlers[$A].insn_code = CODE_FOR_$(div$V$I$a3$)",
  94   "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
  95   "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
  96   "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
  97   "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
  98   "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
  99   "fmod_optab->handlers[$A].insn_code = CODE_FOR_$(fmod$a3$)",
 100   "remainder_optab->handlers[$A].insn_code = CODE_FOR_$(remainder$a3$)",
 101   "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
 102   "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
 103   "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
 104   "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
 105   "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
 106   "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
 107   "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
 108   "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
 109   "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
 110   "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$a3$)",
 111   "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$a3$)",
 112   "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
 113   "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
 114   "pow_optab->handlers[$A].insn_code = CODE_FOR_$(pow$a3$)",
 115   "atan2_optab->handlers[$A].insn_code = CODE_FOR_$(atan2$a3$)",
 116   "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
 117   "negv_optab->handlers[$A].insn_code =\n\
 118     neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$F$a2$)",
 119   "negv_optab->handlers[$A].insn_code = CODE_FOR_$(negv$I$a2$)",
 120   "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
 121   "absv_optab->handlers[$A].insn_code =\n\
 122     abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$F$a2$)",
 123   "absv_optab->handlers[$A].insn_code = CODE_FOR_$(absv$I$a2$)",
 124   "copysign_optab->handlers[$A].insn_code = CODE_FOR_$(copysign$F$a3$)",
 125   "isinf_optab->handlers[$A].insn_code = CODE_FOR_$(isinf$a2$)",
 126   "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
 127   "floor_optab->handlers[$A].insn_code = CODE_FOR_$(floor$a2$)",
 128   "lfloor_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lfloor$F$a$I$b2$)",
 129   "ceil_optab->handlers[$A].insn_code = CODE_FOR_$(ceil$a2$)",
 130   "lceil_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lceil$F$a$I$b2$)",
 131   "round_optab->handlers[$A].insn_code = CODE_FOR_$(round$a2$)",
 132   "btrunc_optab->handlers[$A].insn_code = CODE_FOR_$(btrunc$a2$)",
 133   "nearbyint_optab->handlers[$A].insn_code = CODE_FOR_$(nearbyint$a2$)",
 134   "rint_optab->handlers[$A].insn_code = CODE_FOR_$(rint$a2$)",
 135   "lrint_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lrint$F$a$I$b2$)",
 136   "lround_optab->handlers[$B][$A].insn_code = CODE_FOR_$(lround$F$a$I$b2$)",
 137   "sincos_optab->handlers[$A].insn_code = CODE_FOR_$(sincos$a3$)",
 138   "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
 139   "asin_optab->handlers[$A].insn_code = CODE_FOR_$(asin$a2$)",
 140   "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
 141   "acos_optab->handlers[$A].insn_code = CODE_FOR_$(acos$a2$)",
 142   "exp_optab->handlers[$A].insn_code = CODE_FOR_$(exp$a2$)",
 143   "exp10_optab->handlers[$A].insn_code = CODE_FOR_$(exp10$a2$)",
 144   "exp2_optab->handlers[$A].insn_code = CODE_FOR_$(exp2$a2$)",
 145   "expm1_optab->handlers[$A].insn_code = CODE_FOR_$(expm1$a2$)",
 146   "ldexp_optab->handlers[$A].insn_code = CODE_FOR_$(ldexp$a3$)",
 147   "scalb_optab->handlers[$A].insn_code = CODE_FOR_$(scalb$a3$)",
 148   "logb_optab->handlers[$A].insn_code = CODE_FOR_$(logb$a2$)",
 149   "ilogb_optab->handlers[$A].insn_code = CODE_FOR_$(ilogb$a2$)",
 150   "log_optab->handlers[$A].insn_code = CODE_FOR_$(log$a2$)",
 151   "log10_optab->handlers[$A].insn_code = CODE_FOR_$(log10$a2$)",
 152   "log2_optab->handlers[$A].insn_code = CODE_FOR_$(log2$a2$)",
 153   "log1p_optab->handlers[$A].insn_code = CODE_FOR_$(log1p$a2$)",
 154   "tan_optab->handlers[$A].insn_code = CODE_FOR_$(tan$a2$)",
 155   "atan_optab->handlers[$A].insn_code = CODE_FOR_$(atan$a2$)",
 156   "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
 157   "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
 158   "bswap_optab->handlers[$A].insn_code = CODE_FOR_$(bswap$a2$)",
 159   "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
 160   "clz_optab->handlers[$A].insn_code = CODE_FOR_$(clz$a2$)",
 161   "ctz_optab->handlers[$A].insn_code = CODE_FOR_$(ctz$a2$)",
 162   "popcount_optab->handlers[$A].insn_code = CODE_FOR_$(popcount$a2$)",
 163   "parity_optab->handlers[$A].insn_code = CODE_FOR_$(parity$a2$)",
 164   "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
 165   "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
 166   "movmisalign_optab->handlers[$A].insn_code = CODE_FOR_$(movmisalign$a$)",
 167   "storent_optab->handlers[$A].insn_code = CODE_FOR_$(storent$a$)",
 168   "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
 169   "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
 170   "addcc_optab->handlers[$A].insn_code = CODE_FOR_$(add$acc$)",
 171   "bcc_gen_fctn[$C] = gen_$(b$c$)",
 172   "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
 173   "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
 174   "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
 175   "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
 176   "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
 177   "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
 178   "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
 179   "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
 180   "signbit_optab[$A] = CODE_FOR_$(signbit$F$a2$)",
 181   "movmem_optab[$A] = CODE_FOR_$(movmem$a$)",
 182   "cmpstr_optab[$A] = CODE_FOR_$(cmpstr$a$)",
 183   "cmpstrn_optab[$A] = CODE_FOR_$(cmpstrn$a$)",
 184   "cmpmem_optab[$A] = CODE_FOR_$(cmpmem$a$)",
 185   "setmem_optab[$A] = CODE_FOR_$(setmem$a$)",
 186   "sync_add_optab[$A] = CODE_FOR_$(sync_add$I$a$)",
 187   "sync_sub_optab[$A] = CODE_FOR_$(sync_sub$I$a$)",
 188   "sync_ior_optab[$A] = CODE_FOR_$(sync_ior$I$a$)",
 189   "sync_and_optab[$A] = CODE_FOR_$(sync_and$I$a$)",
 190   "sync_xor_optab[$A] = CODE_FOR_$(sync_xor$I$a$)",
 191   "sync_nand_optab[$A] = CODE_FOR_$(sync_nand$I$a$)",
 192   "sync_old_add_optab[$A] = CODE_FOR_$(sync_old_add$I$a$)",
 193   "sync_old_sub_optab[$A] = CODE_FOR_$(sync_old_sub$I$a$)",
 194   "sync_old_ior_optab[$A] = CODE_FOR_$(sync_old_ior$I$a$)",
 195   "sync_old_and_optab[$A] = CODE_FOR_$(sync_old_and$I$a$)",
 196   "sync_old_xor_optab[$A] = CODE_FOR_$(sync_old_xor$I$a$)",
 197   "sync_old_nand_optab[$A] = CODE_FOR_$(sync_old_nand$I$a$)",
 198   "sync_new_add_optab[$A] = CODE_FOR_$(sync_new_add$I$a$)",
 199   "sync_new_sub_optab[$A] = CODE_FOR_$(sync_new_sub$I$a$)",
 200   "sync_new_ior_optab[$A] = CODE_FOR_$(sync_new_ior$I$a$)",
 201   "sync_new_and_optab[$A] = CODE_FOR_$(sync_new_and$I$a$)",
 202   "sync_new_xor_optab[$A] = CODE_FOR_$(sync_new_xor$I$a$)",
 203   "sync_new_nand_optab[$A] = CODE_FOR_$(sync_new_nand$I$a$)",
 204   "sync_compare_and_swap[$A] = CODE_FOR_$(sync_compare_and_swap$I$a$)",
 205   "sync_compare_and_swap_cc[$A] = CODE_FOR_$(sync_compare_and_swap_cc$I$a$)",
 206   "sync_lock_test_and_set[$A] = CODE_FOR_$(sync_lock_test_and_set$I$a$)",
 207   "sync_lock_release[$A] = CODE_FOR_$(sync_lock_release$I$a$)",
 208   "vec_set_optab->handlers[$A].insn_code = CODE_FOR_$(vec_set$a$)",
 209   "vec_extract_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract$a$)",
 210   "vec_extract_even_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract_even$a$)",
 211   "vec_extract_odd_optab->handlers[$A].insn_code = CODE_FOR_$(vec_extract_odd$a$)",
 212   "vec_interleave_high_optab->handlers[$A].insn_code = CODE_FOR_$(vec_interleave_high$a$)",
 213   "vec_interleave_low_optab->handlers[$A].insn_code = CODE_FOR_$(vec_interleave_low$a$)",
 214   "vec_init_optab->handlers[$A].insn_code = CODE_FOR_$(vec_init$a$)",
 215   "vec_shl_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shl_$a$)",
 216   "vec_shr_optab->handlers[$A].insn_code = CODE_FOR_$(vec_shr_$a$)",
 217   "vec_realign_load_optab->handlers[$A].insn_code = CODE_FOR_$(vec_realign_load_$a$)",
 218   "vcond_gen_code[$A] = CODE_FOR_$(vcond$a$)",
 219   "vcondu_gen_code[$A] = CODE_FOR_$(vcondu$a$)",
 220   "ssum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_ssum$I$a3$)",
 221   "usum_widen_optab->handlers[$A].insn_code = CODE_FOR_$(widen_usum$I$a3$)",
 222   "udot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(udot_prod$I$a$)",
 223   "sdot_prod_optab->handlers[$A].insn_code = CODE_FOR_$(sdot_prod$I$a$)",
 224   "reduc_smax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smax_$a$)",
 225   "reduc_umax_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umax_$a$)",
 226   "reduc_smin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_smin_$a$)",
 227   "reduc_umin_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_umin_$a$)",
 228   "reduc_splus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_splus_$a$)" ,
 229   "reduc_uplus_optab->handlers[$A].insn_code = CODE_FOR_$(reduc_uplus_$a$)",
 230   "vec_widen_umult_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_umult_hi_$a$)",
 231   "vec_widen_umult_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_umult_lo_$a$)",
 232   "vec_widen_smult_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_smult_hi_$a$)",
 233   "vec_widen_smult_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_widen_smult_lo_$a$)",
 234   "vec_unpacks_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_hi_$a$)",
 235   "vec_unpacks_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_lo_$a$)",
 236   "vec_unpacku_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_hi_$a$)",
 237   "vec_unpacku_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_lo_$a$)",
 238   "vec_unpacks_float_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_float_hi_$a$)",
 239   "vec_unpacks_float_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacks_float_lo_$a$)",
 240   "vec_unpacku_float_hi_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_float_hi_$a$)",
 241   "vec_unpacku_float_lo_optab->handlers[$A].insn_code = CODE_FOR_$(vec_unpacku_float_lo_$a$)",
 242   "vec_pack_trunc_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_trunc_$a$)",
 243   "vec_pack_ssat_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_ssat_$a$)",
 244   "vec_pack_usat_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_usat_$a$)",
 245   "vec_pack_sfix_trunc_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_sfix_trunc_$a$)",
 246   "vec_pack_ufix_trunc_optab->handlers[$A].insn_code = CODE_FOR_$(vec_pack_ufix_trunc_$a$)"
 247 };
 248
 249 static void gen_insn (rtx);
 250
 251 static void
 252 gen_insn (rtx insn)
 253 {
 254   const char *name = XSTR (insn, 0);
 255   int m1 = 0, m2 = 0, op = 0;
 256   size_t pindex;
 257   int i;
 258   const char *np, *pp, *p, *q;
 259
 260   /* Don't mention instructions whose names are the null string.
 261      They are in the machine description just to be recognized.  */
 262   if (*name == 0)
 263     return;
 264
 265   /* See if NAME matches one of the patterns we have for the optabs we know
 266      about.  */
 267
 268   for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
 269     {
 270       int force_float = 0, force_int = 0, force_partial_int = 0;
 271       int force_consec = 0;
 272       int matches = 1;
 273
 274       for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
 275         ;
 276
 277       for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
 278            pp++)
 279         {
 280           if (*pp != '$')
 281             {
 282               if (*pp != *np++)
 283                 break;
 284             }
 285           else
 286             switch (*++pp)
 287               {
 288               case 'N':
 289                 force_consec = 1;
 290                 break;
 291               case 'I':
 292                 force_int = 1;
 293                 break;
 294               case 'P':
 295                 force_partial_int = 1;
 296                 break;
 297               case 'F':
 298                 force_float = 1;
 299                 break;
 300               case 'V':
 301                 break;
 302               case 'c':
 303                 for (op = 0; op < NUM_RTX_CODE; op++)
 304                   {
 305                     for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
 306                       if (*p != *q)
 307                         break;
 308
 309                     /* We have to be concerned about matching "gt" and
 310                        missing "gtu", e.g., so verify we have reached the
 311                        end of thing we are to match.  */
 312                     if (*p == 0 && *q == 0
 313                         && (GET_RTX_CLASS (op) == RTX_COMPARE
 314                             || GET_RTX_CLASS (op) == RTX_COMM_COMPARE))
 315                       break;
 316                   }
 317
 318                 if (op == NUM_RTX_CODE)
 319                   matches = 0;
 320                 else
 321                   np += strlen (GET_RTX_NAME(op));
 322                 break;
 323               case 'a':
 324               case 'b':
 325                 /* This loop will stop at the first prefix match, so
 326                    look through the modes in reverse order, in case
 327                    there are extra CC modes and CC is a prefix of the
 328                    CC modes (as it should be).  */
 329                 for (i = (MAX_MACHINE_MODE) - 1; i >= 0; i--)
 330                   {
 331                     for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
 332                       if (TOLOWER (*p) != *q)
 333                         break;
 334
 335                     if (*p == 0
 336                         && (! force_int || mode_class[i] == MODE_INT
 337                             || mode_class[i] == MODE_VECTOR_INT)
 338                         && (! force_partial_int
 339                             || mode_class[i] == MODE_INT
 340                             || mode_class[i] == MODE_PARTIAL_INT
 341                             || mode_class[i] == MODE_VECTOR_INT)
 342                         && (! force_float
 343                             || mode_class[i] == MODE_FLOAT
 344                             || mode_class[i] == MODE_DECIMAL_FLOAT
 345                             || mode_class[i] == MODE_COMPLEX_FLOAT
 346                             || mode_class[i] == MODE_VECTOR_FLOAT))
 347                       break;
 348                   }
 349
 350                 if (i < 0)
 351                   matches = 0;
 352                 else if (*pp == 'a')
 353                   m1 = i, np += strlen (GET_MODE_NAME(i));
 354                 else
 355                   m2 = i, np += strlen (GET_MODE_NAME(i));
 356
 357                 force_int = force_partial_int = force_float = 0;
 358                 break;
 359
 360               default:
 361                 gcc_unreachable ();
 362               }
 363         }
 364
 365       if (matches && pp[0] == '$' && pp[1] == ')'
 366           && *np == 0
 367           && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
 368         break;
 369     }
 370
 371   if (pindex == ARRAY_SIZE (optabs))
 372     return;
 373
 374   /* We found a match.  If this pattern is only conditionally present,
 375      write out the "if" and two extra blanks.  */
 376
 377   if (*XSTR (insn, 2) != 0)
 378     printf ("  if (HAVE_%s)\n  ", name);
 379
 380   printf ("  ");
 381
 382   /* Now write out the initialization, making all required substitutions.  */
 383   for (pp = optabs[pindex]; *pp; pp++)
 384     {
 385       if (*pp != '$')
 386         putchar (*pp);
 387       else
 388         switch (*++pp)
 389           {
 390           case '(':  case ')':
 391           case 'I':  case 'F':  case 'N':
 392             break;
 393           case 'V':
 394             if (SCALAR_FLOAT_MODE_P (m1))
 395               printf ("v");
 396             break;
 397           case 'a':
 398             for (np = GET_MODE_NAME(m1); *np; np++)
 399               putchar (TOLOWER (*np));
 400             break;
 401           case 'b':
 402             for (np = GET_MODE_NAME(m2); *np; np++)
 403               putchar (TOLOWER (*np));
 404             break;
 405           case 'A':
 406             printf ("%smode", GET_MODE_NAME(m1));
 407             break;
 408           case 'B':
 409             printf ("%smode", GET_MODE_NAME(m2));
 410             break;
 411           case 'c':
 412             printf ("%s", GET_RTX_NAME(op));
 413             break;
 414           case 'C':
 415             for (np = GET_RTX_NAME(op); *np; np++)
 416               putchar (TOUPPER (*np));
 417             break;
 418           }
 419     }
 420
 421   printf (";\n");
 422 }
 423
 424 extern int main (int, char **);
 425
 426 int
 427 main (int argc, char **argv)
 428 {
 429   rtx desc;
 430
 431   progname = "genopinit";
 432
 433   if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
 434     return (FATAL_EXIT_CODE);
 435
 436   printf ("/* Generated automatically by the program `genopinit'\n\
 437 from the machine description file `md'.  */\n\n");
 438
 439   printf ("#include \"config.h\"\n");
 440   printf ("#include \"system.h\"\n");
 441   printf ("#include \"coretypes.h\"\n");
 442   printf ("#include \"tm.h\"\n");
 443   printf ("#include \"rtl.h\"\n");
 444   printf ("#include \"flags.h\"\n");
 445   printf ("#include \"insn-config.h\"\n");
 446   printf ("#include \"recog.h\"\n");
 447   printf ("#include \"expr.h\"\n");
 448   printf ("#include \"optabs.h\"\n");
 449   printf ("#include \"reload.h\"\n\n");
 450
 451   printf ("void\ninit_all_optabs (void)\n{\n");
 452
 453   puts ("\
 454 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 455   int i, j;\n\
 456 #endif\n");
 457
 458   /* Read the machine description.  */
 459
 460   while (1)
 461     {
 462       int line_no, insn_code_number = 0;
 463
 464       desc = read_md_rtx (&line_no, &insn_code_number);
 465       if (desc == NULL)
 466         break;
 467
 468       if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
 469         gen_insn (desc);
 470     }
 471
 472   puts ("\
 473 \n\
 474 #ifdef FIXUNS_TRUNC_LIKE_FIX_TRUNC\n\
 475   /* This flag says the same insns that convert to a signed fixnum\n\
 476      also convert validly to an unsigned one.  */\n\
 477   for (i = 0; i < NUM_MACHINE_MODES; i++)\n\
 478     for (j = 0; j < NUM_MACHINE_MODES; j++)\n\
 479       ufixtrunc_optab->handlers[i][j].insn_code\n\
 480       = sfixtrunc_optab->handlers[i][j].insn_code;\n\
 481 #endif\n\
 482 }");
 483
 484   fflush (stdout);
 485   return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
 486 }