Daily bump.
[official-gcc.git] / gcc / genopinit.c
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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 || mode_class[i] == MODE_VECTOR_INT)
224 && (! force_partial_int
225 || mode_class[i] == MODE_INT
226 || mode_class[i] == MODE_PARTIAL_INT
227 || mode_class[i] == MODE_VECTOR_INT)
228 && (! force_float || mode_class[i] == MODE_FLOAT
229 || mode_class[i] == MODE_VECTOR_FLOAT))
230 break;
233 if (i < 0)
234 matches = 0;
235 else if (*pp == 'a')
236 m1 = i, np += strlen (GET_MODE_NAME(i));
237 else
238 m2 = i, np += strlen (GET_MODE_NAME(i));
240 force_int = force_partial_int = force_float = 0;
241 break;
243 default:
244 abort ();
248 if (matches && pp[0] == '$' && pp[1] == ')'
249 && *np == 0
250 && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
251 break;
254 if (pindex == ARRAY_SIZE (optabs))
255 return;
257 /* We found a match. If this pattern is only conditionally present,
258 write out the "if" and two extra blanks. */
260 if (*XSTR (insn, 2) != 0)
261 printf (" if (HAVE_%s)\n ", name);
263 printf (" ");
265 /* Now write out the initialization, making all required substitutions. */
266 for (pp = optabs[pindex]; *pp; pp++)
268 if (*pp != '$')
269 putchar (*pp);
270 else
271 switch (*++pp)
273 case '(': case ')':
274 case 'I': case 'F': case 'N':
275 break;
276 case 'V':
277 if (GET_MODE_CLASS (m1) == MODE_FLOAT)
278 printf ("v");
279 break;
280 case 'a':
281 for (np = GET_MODE_NAME(m1); *np; np++)
282 putchar (TOLOWER (*np));
283 break;
284 case 'b':
285 for (np = GET_MODE_NAME(m2); *np; np++)
286 putchar (TOLOWER (*np));
287 break;
288 case 'A':
289 printf ("(int) %smode", GET_MODE_NAME(m1));
290 break;
291 case 'B':
292 printf ("(int) %smode", GET_MODE_NAME(m2));
293 break;
294 case 'c':
295 printf ("%s", GET_RTX_NAME(op));
296 break;
297 case 'C':
298 printf ("(int) ");
299 for (np = GET_RTX_NAME(op); *np; np++)
300 putchar (TOUPPER (*np));
301 break;
305 printf (";\n");
308 extern int main PARAMS ((int, char **));
311 main (argc, argv)
312 int argc;
313 char **argv;
315 rtx desc;
317 progname = "genopinit";
319 if (argc <= 1)
320 fatal ("no input file name");
322 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
323 return (FATAL_EXIT_CODE);
325 printf ("/* Generated automatically by the program `genopinit'\n\
326 from the machine description file `md'. */\n\n");
328 printf ("#include \"config.h\"\n");
329 printf ("#include \"system.h\"\n");
330 printf ("#include \"rtl.h\"\n");
331 printf ("#include \"flags.h\"\n");
332 printf ("#include \"insn-config.h\"\n");
333 printf ("#include \"recog.h\"\n");
334 printf ("#include \"expr.h\"\n");
335 printf ("#include \"optabs.h\"\n");
336 printf ("#include \"reload.h\"\n\n");
338 printf ("void\ninit_all_optabs ()\n{\n");
340 /* Read the machine description. */
342 while (1)
344 int line_no, insn_code_number = 0;
346 desc = read_md_rtx (&line_no, &insn_code_number);
347 if (desc == NULL)
348 break;
350 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
351 gen_insn (desc);
354 printf ("}\n");
356 fflush (stdout);
357 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
360 /* Define this so we can link with print-rtl.o to get debug_rtx function. */
361 const char *
362 get_insn_name (code)
363 int code ATTRIBUTE_UNUSED;
365 return NULL;