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
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
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
25 #include "coretypes.h"
29 #include "gensupport.h"
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.
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.
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.
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.
55 $V means to emit 'v' if the first mode is a MODE_FLOAT mode.
57 For some optabs, we store the operation by RTL codes. These are only
58 used for comparisons. In that case, $c and $C are the lower-case and
59 upper-case forms of the comparison, respectively. */
61 static const char * const optabs[] =
62 { "extendtab[$B][$A][0] = CODE_FOR_$(extend$a$b2$)",
63 "extendtab[$B][$A][1] = CODE_FOR_$(zero_extend$a$b2$)",
64 "fixtab[$A][$B][0] = CODE_FOR_$(fix$F$a$I$b2$)",
65 "fixtab[$A][$B][1] = CODE_FOR_$(fixuns$F$a$b2$)",
66 "fixtrunctab[$A][$B][0] = CODE_FOR_$(fix_trunc$F$a$I$b2$)",
67 "fixtrunctab[$A][$B][1] = CODE_FOR_$(fixuns_trunc$F$a$I$b2$)",
68 "floattab[$B][$A][0] = CODE_FOR_$(float$I$a$F$b2$)",
69 "floattab[$B][$A][1] = CODE_FOR_$(floatuns$I$a$F$b2$)",
70 "add_optab->handlers[$A].insn_code = CODE_FOR_$(add$P$a3$)",
71 "addv_optab->handlers[(int) $A].insn_code =\n\
72 add_optab->handlers[(int) $A].insn_code = CODE_FOR_$(add$F$a3$)",
73 "addv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(addv$I$a3$)",
74 "sub_optab->handlers[$A].insn_code = CODE_FOR_$(sub$P$a3$)",
75 "subv_optab->handlers[(int) $A].insn_code =\n\
76 sub_optab->handlers[(int) $A].insn_code = CODE_FOR_$(sub$F$a3$)",
77 "subv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(subv$I$a3$)",
78 "smul_optab->handlers[$A].insn_code = CODE_FOR_$(mul$P$a3$)",
79 "smulv_optab->handlers[(int) $A].insn_code =\n\
80 smul_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mul$F$a3$)",
81 "smulv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mulv$I$a3$)",
82 "umul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(umul$a3_highpart$)",
83 "smul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(smul$a3_highpart$)",
84 "smul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(mul$a$b3$)$N",
85 "umul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umul$a$b3$)$N",
86 "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
87 "sdivv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(div$V$I$a3$)",
88 "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
89 "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
90 "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
91 "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
92 "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
93 "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
94 "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
95 "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
96 "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
97 "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
98 "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
99 "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
100 "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
101 "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
102 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$I$a3$)",
103 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(min$F$a3$)",
104 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$I$a3$)",
105 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(max$F$a3$)",
106 "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
107 "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
108 "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
109 "negv_optab->handlers[(int) $A].insn_code =\n\
110 neg_optab->handlers[(int) $A].insn_code = CODE_FOR_$(neg$F$a2$)",
111 "negv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(negv$I$a2$)",
112 "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
113 "absv_optab->handlers[(int) $A].insn_code =\n\
114 abs_optab->handlers[(int) $A].insn_code = CODE_FOR_$(abs$F$a2$)",
115 "absv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(absv$I$a2$)",
116 "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
117 "floor_optab->handlers[$A].insn_code = CODE_FOR_$(floor$a2$)",
118 "ceil_optab->handlers[$A].insn_code = CODE_FOR_$(ceil$a2$)",
119 "round_optab->handlers[$A].insn_code = CODE_FOR_$(round$a2$)",
120 "trunc_optab->handlers[$A].insn_code = CODE_FOR_$(trunc$a2$)",
121 "nearbyint_optab->handlers[$A].insn_code = CODE_FOR_$(nearbyint$a2$)",
122 "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
123 "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
124 "exp_optab->handlers[$A].insn_code = CODE_FOR_$(exp$a2$)",
125 "log_optab->handlers[$A].insn_code = CODE_FOR_$(log$a2$)",
126 "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
127 "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
128 "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
129 "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
130 "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
131 "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
132 "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
133 "bcc_gen_fctn[$C] = gen_$(b$c$)",
134 "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
135 "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
136 "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
137 "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
138 "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
139 "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
140 "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
141 "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
142 "movstr_optab[$A] = CODE_FOR_$(movstr$a$)",
143 "clrstr_optab[$A] = CODE_FOR_$(clrstr$a$)" };
145 static void gen_insn PARAMS ((rtx));
151 const char *name = XSTR (insn, 0);
152 int m1 = 0, m2 = 0, op = 0;
155 const char *np, *pp, *p, *q;
157 /* Don't mention instructions whose names are the null string.
158 They are in the machine description just to be recognized. */
162 /* See if NAME matches one of the patterns we have for the optabs we know
165 for (pindex = 0; pindex < ARRAY_SIZE (optabs); pindex++)
167 int force_float = 0, force_int = 0, force_partial_int = 0;
168 int force_consec = 0;
171 for (pp = optabs[pindex]; pp[0] != '$' || pp[1] != '('; pp++)
174 for (pp += 2, np = name; matches && ! (pp[0] == '$' && pp[1] == ')');
192 force_partial_int = 1;
200 for (op = 0; op < NUM_RTX_CODE; op++)
202 for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
206 /* We have to be concerned about matching "gt" and
207 missing "gtu", e.g., so verify we have reached the
208 end of thing we are to match. */
209 if (*p == 0 && *q == 0 && GET_RTX_CLASS(op) == '<')
213 if (op == NUM_RTX_CODE)
216 np += strlen (GET_RTX_NAME(op));
220 /* This loop will stop at the first prefix match, so
221 look through the modes in reverse order, in case
222 EXTRA_CC_MODES was used and CC is a prefix of the
223 CC modes (as it should be). */
224 for (i = ((int) MAX_MACHINE_MODE) - 1; i >= 0; i--)
226 for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
227 if (TOLOWER (*p) != *q)
231 && (! force_int || mode_class[i] == MODE_INT
232 || mode_class[i] == MODE_VECTOR_INT)
233 && (! force_partial_int
234 || mode_class[i] == MODE_INT
235 || mode_class[i] == MODE_PARTIAL_INT
236 || mode_class[i] == MODE_VECTOR_INT)
237 && (! force_float || mode_class[i] == MODE_FLOAT
238 || mode_class[i] == MODE_VECTOR_FLOAT))
245 m1 = i, np += strlen (GET_MODE_NAME(i));
247 m2 = i, np += strlen (GET_MODE_NAME(i));
249 force_int = force_partial_int = force_float = 0;
257 if (matches && pp[0] == '$' && pp[1] == ')'
259 && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
263 if (pindex == ARRAY_SIZE (optabs))
266 /* We found a match. If this pattern is only conditionally present,
267 write out the "if" and two extra blanks. */
269 if (*XSTR (insn, 2) != 0)
270 printf (" if (HAVE_%s)\n ", name);
274 /* Now write out the initialization, making all required substitutions. */
275 for (pp = optabs[pindex]; *pp; pp++)
283 case 'I': case 'F': case 'N':
286 if (GET_MODE_CLASS (m1) == MODE_FLOAT)
290 for (np = GET_MODE_NAME(m1); *np; np++)
291 putchar (TOLOWER (*np));
294 for (np = GET_MODE_NAME(m2); *np; np++)
295 putchar (TOLOWER (*np));
298 printf ("(int) %smode", GET_MODE_NAME(m1));
301 printf ("(int) %smode", GET_MODE_NAME(m2));
304 printf ("%s", GET_RTX_NAME(op));
308 for (np = GET_RTX_NAME(op); *np; np++)
309 putchar (TOUPPER (*np));
317 extern int main PARAMS ((int, char **));
326 progname = "genopinit";
329 fatal ("no input file name");
331 if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
332 return (FATAL_EXIT_CODE);
334 printf ("/* Generated automatically by the program `genopinit'\n\
335 from the machine description file `md'. */\n\n");
337 printf ("#include \"config.h\"\n");
338 printf ("#include \"system.h\"\n");
339 printf ("#include \"coretypes.h\"\n");
340 printf ("#include \"tm.h\"\n");
341 printf ("#include \"rtl.h\"\n");
342 printf ("#include \"flags.h\"\n");
343 printf ("#include \"insn-config.h\"\n");
344 printf ("#include \"recog.h\"\n");
345 printf ("#include \"expr.h\"\n");
346 printf ("#include \"optabs.h\"\n");
347 printf ("#include \"reload.h\"\n\n");
349 printf ("void\ninit_all_optabs ()\n{\n");
351 /* Read the machine description. */
355 int line_no, insn_code_number = 0;
357 desc = read_md_rtx (&line_no, &insn_code_number);
361 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
368 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
371 /* Define this so we can link with print-rtl.o to get debug_rtx function. */
374 int code ATTRIBUTE_UNUSED;