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$)",
96   "drem_optab->handlers[$A].insn_code = CODE_FOR_$(drem$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$)",
123   "lfloor_optab->handlers[$A].insn_code = CODE_FOR_$(lfloor$a2$)",
124   "ceil_optab->handlers[$A].insn_code = CODE_FOR_$(ceil$a2$)",
125   "lceil_optab->handlers[$A].insn_code = CODE_FOR_$(lceil$a2$)",
126   "round_optab->handlers[$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$)",
130   "lrint_optab->handlers[$A].insn_code = CODE_FOR_$(lrint$a2$)",
131   "sincos_optab->handlers[$A].insn_code = CODE_FOR_$(sincos$a3$)",
132   "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
133   "asin_optab->handlers[$A].insn_code = CODE_FOR_$(asin$a2$)",
134   "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
135   "acos_optab->handlers[$A].insn_code = CODE_FOR_$(acos$a2$)",
136   "exp_optab->handlers[$A].insn_code = CODE_FOR_$(exp$a2$)",
137   "exp10_optab->handlers[$A].insn_code = CODE_FOR_$(exp10$a2$)",
138   "exp2_optab->handlers[$A].insn_code = CODE_FOR_$(exp2$a2$)",
139   "expm1_optab->handlers[$A].insn_code = CODE_FOR_$(expm1$a2$)",
140   "ldexp_optab->handlers[$A].insn_code = CODE_FOR_$(ldexp$a3$)",
141   "logb_optab->handlers[$A].insn_code = CODE_FOR_$(logb$a2$)",
142   "ilogb_optab->handlers[$A].insn_code = CODE_FOR_$(ilogb$a2$)",
143   "log_optab->handlers[$A].insn_code = CODE_FOR_$(log$a2$)",
144   "log10_optab->handlers[$A].insn_code = CODE_FOR_$(log10$a2$)",
145   "log2_optab->handlers[$A].insn_code = CODE_FOR_$(log2$a2$)",
146   "log1p_optab->handlers[$A].insn_code = CODE_FOR_$(log1p$a2$)",
147   "tan_optab->handlers[$A].insn_code = CODE_FOR_$(tan$a2$)",
148   "atan_optab->handlers[$A].insn_code = CODE_FOR_$(atan$a2$)",
149   "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
150   "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
151   "bswap_optab->handlers[$A].insn_code = CODE_FOR_$(bswap$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$)"
217 };
218 
219 static void gen_insn (rtx);
220 
221 static void
gen_insn(rtx insn)222 gen_insn (rtx insn)
223 {
224   const char *name = XSTR (insn, 0);
225   int m1 = 0, m2 = 0, op = 0;
226   size_t pindex;
227   int i;
228   const char *np, *pp, *p, *q;
229 
230   /* Don't mention instructions whose names are the null string.
231      They are in the machine description just to be recognized.  */
232   if (*name == 0)
233     return;
234 
235   /* See if NAME matches one of the patterns we have for the optabs we know
236      about.  */
237 
238   for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
239     {
240       int force_float = 0, force_int = 0, force_partial_int = 0;
241       int force_consec = 0;
242       int matches = 1;
243 
244       for (pp = optabs[pindex]; pp[0] != '$' || 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
main(int argc,char ** argv)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 }
457