Remove some compile time warnings about duplicate definitions.
[official-gcc.git] / gcc / genopinit.c
blob85fa6433f35e204a00f3f22b1dabf6ae5e335905
1 /* Generate code to initialize optabs from machine description.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
5 This file is part of GCC.
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.
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.
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. */
23 #include "hconfig.h"
24 #include "system.h"
25 #include "rtl.h"
26 #include "errors.h"
27 #include "gensupport.h"
30 /* Many parts of GCC use arrays that are indexed by machine mode and
31 contain the insn codes for pattern in the MD file that perform a given
32 operation on operands of that mode.
34 These patterns are present in the MD file with names that contain
35 the mode(s) used and the name of the operation. This program
36 writes a function `init_all_optabs' that initializes the optabs with
37 all the insn codes of the relevant patterns present in the MD file.
39 This array contains a list of optabs that need to be initialized. Within
40 each string, the name of the pattern to be matched against is delimited
41 with $( and $). In the string, $a and $b are used to match a short mode
42 name (the part of the mode name not including `mode' and converted to
43 lower-case). When writing out the initializer, the entire string is
44 used. $A and $B are replaced with the full name of the mode; $a and $b
45 are replaced with the short form of the name, as above.
47 If $N is present in the pattern, it means the two modes must be consecutive
48 widths in the same mode class (e.g, QImode and HImode). $I means that
49 only full integer modes should be considered for the next mode, and $F
50 means that only float modes should be considered.
51 $P means that both full and partial integer modes should be considered.
53 $V means to emit 'v' if the first mode is a MODE_FLOAT mode.
55 For some optabs, we store the operation by RTL codes. These are only
56 used for comparisons. In that case, $c and $C are the lower-case and
57 upper-case forms of the comparison, respectively. */
59 static const char * const optabs[] =
60 { "extendtab[$B][$A][0] = CODE_FOR_$(extend$a$b2$)",
61 "extendtab[$B][$A][1] = CODE_FOR_$(zero_extend$a$b2$)",
62 "fixtab[$A][$B][0] = CODE_FOR_$(fix$F$a$I$b2$)",
63 "fixtab[$A][$B][1] = CODE_FOR_$(fixuns$F$a$b2$)",
64 "fixtrunctab[$A][$B][0] = CODE_FOR_$(fix_trunc$F$a$I$b2$)",
65 "fixtrunctab[$A][$B][1] = CODE_FOR_$(fixuns_trunc$F$a$I$b2$)",
66 "floattab[$B][$A][0] = CODE_FOR_$(float$I$a$F$b2$)",
67 "floattab[$B][$A][1] = CODE_FOR_$(floatuns$I$a$F$b2$)",
68 "add_optab->handlers[$A].insn_code = CODE_FOR_$(add$P$a3$)",
69 "addv_optab->handlers[(int) $A].insn_code =\n\
70 add_optab->handlers[(int) $A].insn_code = CODE_FOR_$(add$F$a3$)",
71 "addv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(addv$I$a3$)",
72 "sub_optab->handlers[$A].insn_code = CODE_FOR_$(sub$P$a3$)",
73 "subv_optab->handlers[(int) $A].insn_code =\n\
74 sub_optab->handlers[(int) $A].insn_code = CODE_FOR_$(sub$F$a3$)",
75 "subv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(subv$I$a3$)",
76 "smul_optab->handlers[$A].insn_code = CODE_FOR_$(mul$P$a3$)",
77 "smulv_optab->handlers[(int) $A].insn_code =\n\
78 smul_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mul$F$a3$)",
79 "smulv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mulv$I$a3$)",
80 "umul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(umul$a3_highpart$)",
81 "smul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(smul$a3_highpart$)",
82 "smul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(mul$a$b3$)$N",
83 "umul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umul$a$b3$)$N",
84 "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
85 "sdivv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(div$V$I$a3$)",
86 "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
87 "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
88 "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
89 "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
90 "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
91 "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
92 "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
93 "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
94 "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
95 "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
96 "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
97 "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
98 "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
99 "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
100 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$I$a3$)",
101 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(min$F$a3$)",
102 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$I$a3$)",
103 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(max$F$a3$)",
104 "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
105 "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
106 "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
107 "negv_optab->handlers[(int) $A].insn_code =\n\
108 neg_optab->handlers[(int) $A].insn_code = CODE_FOR_$(neg$F$a2$)",
109 "negv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(negv$I$a2$)",
110 "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
111 "absv_optab->handlers[(int) $A].insn_code =\n\
112 abs_optab->handlers[(int) $A].insn_code = CODE_FOR_$(abs$F$a2$)",
113 "absv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(absv$I$a2$)",
114 "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
115 "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
116 "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
117 "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
118 "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
119 "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
120 "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
121 "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
122 "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
123 "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
124 "bcc_gen_fctn[$C] = gen_$(b$c$)",
125 "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
126 "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
127 "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
128 "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
129 "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
130 "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
131 "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
132 "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
133 "movstr_optab[$A] = CODE_FOR_$(movstr$a$)",
134 "clrstr_optab[$A] = CODE_FOR_$(clrstr$a$)" };
136 static void gen_insn PARAMS ((rtx));
138 static void
139 gen_insn (insn)
140 rtx insn;
142 const char *name = XSTR (insn, 0);
143 int m1 = 0, m2 = 0, op = 0;
144 size_t pindex;
145 int i;
146 const char *np, *pp, *p, *q;
148 /* Don't mention instructions whose names are the null string.
149 They are in the machine description just to be recognized. */
150 if (*name == 0)
151 return;
153 /* See if NAME matches one of the patterns we have for the optabs we know
154 about. */
156 for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
158 int force_float = 0, force_int = 0, force_partial_int = 0;
159 int force_consec = 0;
160 int matches = 1;
162 for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
165 for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
166 pp++)
168 if (*pp != '$')
170 if (*pp != *np++)
171 break;
173 else
174 switch (*++pp)
176 case 'N':
177 force_consec = 1;
178 break;
179 case 'I':
180 force_int = 1;
181 break;
182 case 'P':
183 force_partial_int = 1;
184 break;
185 case 'F':
186 force_float = 1;
187 break;
188 case 'V':
189 break;
190 case 'c':
191 for (op = 0; op < NUM_RTX_CODE; op++)
193 for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
194 if (*p != *q)
195 break;
197 /* We have to be concerned about matching "gt" and
198 missing "gtu", e.g., so verify we have reached the
199 end of thing we are to match. */
200 if (*p == 0 && *q == 0 && GET_RTX_CLASS(op) == '<')
201 break;
204 if (op == NUM_RTX_CODE)
205 matches = 0;
206 else
207 np += strlen (GET_RTX_NAME(op));
208 break;
209 case 'a':
210 case 'b':
211 /* This loop will stop at the first prefix match, so
212 look through the modes in reverse order, in case
213 EXTRA_CC_MODES was used and CC is a prefix of the
214 CC modes (as it should be). */
215 for (i = ((int) MAX_MACHINE_MODE) - 1; i >= 0; i--)
217 for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
218 if (TOLOWER (*p) != *q)
219 break;
221 if (*p == 0
222 && (! force_int || mode_class[i] == MODE_INT)
223 && (! force_partial_int
224 || mode_class[i] == MODE_INT
225 || mode_class[i] == MODE_PARTIAL_INT)
226 && (! force_float || mode_class[i] == MODE_FLOAT))
227 break;
230 if (i < 0)
231 matches = 0;
232 else if (*pp == 'a')
233 m1 = i, np += strlen (GET_MODE_NAME(i));
234 else
235 m2 = i, np += strlen (GET_MODE_NAME(i));
237 force_int = force_partial_int = force_float = 0;
238 break;
240 default:
241 abort ();
245 if (matches && pp[0] == '$' && pp[1] == ')'
246 && *np == 0
247 && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
248 break;
251 if (pindex == ARRAY_SIZE (optabs))
252 return;
254 /* We found a match. If this pattern is only conditionally present,
255 write out the "if" and two extra blanks. */
257 if (*XSTR (insn, 2) != 0)
258 printf (" if (HAVE_%s)\n ", name);
260 printf (" ");
262 /* Now write out the initialization, making all required substitutions. */
263 for (pp = optabs[pindex]; *pp; pp++)
265 if (*pp != '$')
266 putchar (*pp);
267 else
268 switch (*++pp)
270 case '(': case ')':
271 case 'I': case 'F': case 'N':
272 break;
273 case 'V':
274 if (GET_MODE_CLASS (m1) == MODE_FLOAT)
275 printf ("v");
276 break;
277 case 'a':
278 for (np = GET_MODE_NAME(m1); *np; np++)
279 putchar (TOLOWER (*np));
280 break;
281 case 'b':
282 for (np = GET_MODE_NAME(m2); *np; np++)
283 putchar (TOLOWER (*np));
284 break;
285 case 'A':
286 printf ("(int) %smode", GET_MODE_NAME(m1));
287 break;
288 case 'B':
289 printf ("(int) %smode", GET_MODE_NAME(m2));
290 break;
291 case 'c':
292 printf ("%s", GET_RTX_NAME(op));
293 break;
294 case 'C':
295 printf ("(int) ");
296 for (np = GET_RTX_NAME(op); *np; np++)
297 putchar (TOUPPER (*np));
298 break;
302 printf (";\n");
305 extern int main PARAMS ((int, char **));
308 main (argc, argv)
309 int argc;
310 char **argv;
312 rtx desc;
314 progname = "genopinit";
316 if (argc <= 1)
317 fatal ("No input file name.");
319 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
320 return (FATAL_EXIT_CODE);
322 printf ("/* Generated automatically by the program `genopinit'\n\
323 from the machine description file `md'. */\n\n");
325 printf ("#include \"config.h\"\n");
326 printf ("#include \"system.h\"\n");
327 printf ("#include \"rtl.h\"\n");
328 printf ("#include \"flags.h\"\n");
329 printf ("#include \"insn-config.h\"\n");
330 printf ("#include \"recog.h\"\n");
331 printf ("#include \"expr.h\"\n");
332 printf ("#include \"optabs.h\"\n");
333 printf ("#include \"reload.h\"\n\n");
335 printf ("void\ninit_all_optabs ()\n{\n");
337 /* Read the machine description. */
339 while (1)
341 int line_no, insn_code_number = 0;
343 desc = read_md_rtx (&line_no, &insn_code_number);
344 if (desc == NULL)
345 break;
347 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
348 gen_insn (desc);
351 printf ("}\n");
353 fflush (stdout);
354 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
357 /* Define this so we can link with print-rtl.o to get debug_rtx function. */
358 const char *
359 get_insn_name (code)
360 int code ATTRIBUTE_UNUSED;
362 return NULL;