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 GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
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 integer modes should be considered for the next mode, and %F means
50 that only float modes should be considered.
52 For some optabs, we store the operation by RTL codes. These are only
53 used for comparisons. In that case, %c and %C are the lower-case and
54 upper-case forms of the comparison, respectively. */
56 /* The reason we use \% is to avoid sequences of the form %-capletter-%
57 which SCCS treats as magic. This gets warnings which you should ignore. */
59 const char * const optabs[] =
60 { "extendtab[(int) %B][(int) %A][0] = CODE_FOR_%(extend%a\%b2%)",
61 "extendtab[(int) %B][(int) %A][1] = CODE_FOR_%(zero_extend%a\%b2%)",
62 "fixtab[(int) %A][(int) %B][0] = CODE_FOR_%(fix%F\%a%I\%b2%)",
63 "fixtab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns%F\%a%b2%)",
64 "fixtrunctab[(int) %A][(int) %B][0] = CODE_FOR_%(fix_trunc%F\%a%I\%b2%)",
65 "fixtrunctab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns_trunc%F\%a%I\%b2%)",
66 "floattab[(int) %B][(int) %A][0] = CODE_FOR_%(float%I\%a%F\%b2%)",
67 "floattab[(int) %B][(int) %A][1] = CODE_FOR_%(floatuns%I\%a%F\%b2%)",
68 "add_optab->handlers[(int) %A].insn_code = CODE_FOR_%(add%a3%)",
69 "sub_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sub%a3%)",
70 "smul_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mul%a3%)",
71 "umul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umul%a3_highpart%)",
72 "smul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smul%a3_highpart%)",
73 "smul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(mul%a%b3%)%N",
74 "umul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(umul%a%b3%)%N",
75 "sdiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%I\%a3%)",
76 "udiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udiv%I\%a3%)",
77 "sdivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(divmod%a4%)",
78 "udivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udivmod%a4%)",
79 "smod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mod%a3%)",
80 "umod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umod%a3%)",
81 "flodiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%F\%a3%)",
82 "ftrunc_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ftrunc%F\%a2%)",
83 "and_optab->handlers[(int) %A].insn_code = CODE_FOR_%(and%a3%)",
84 "ior_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ior%a3%)",
85 "xor_optab->handlers[(int) %A].insn_code = CODE_FOR_%(xor%a3%)",
86 "ashl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashl%a3%)",
87 "ashr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashr%a3%)",
88 "lshr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(lshr%a3%)",
89 "rotl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotl%a3%)",
90 "rotr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotr%a3%)",
91 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smin%I\%a3%)",
92 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(min%F\%a3%)",
93 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smax%I\%a3%)",
94 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(max%F\%a3%)",
95 "umin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umin%I\%a3%)",
96 "umax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umax%I\%a3%)",
97 "neg_optab->handlers[(int) %A].insn_code = CODE_FOR_%(neg%a2%)",
98 "abs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(abs%a2%)",
99 "sqrt_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sqrt%a2%)",
100 "sin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sin%a2%)",
101 "cos_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cos%a2%)",
102 "strlen_optab->handlers[(int) %A].insn_code = CODE_FOR_%(strlen%a%)",
103 "one_cmpl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(one_cmpl%a2%)",
104 "ffs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ffs%a2%)",
105 "mov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mov%a%)",
106 "movstrict_optab->handlers[(int) %A].insn_code = CODE_FOR_%(movstrict%a%)",
107 "cmp_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmp%a%)",
108 "tst_optab->handlers[(int) %A].insn_code = CODE_FOR_%(tst%a%)",
109 "bcc_gen_fctn[(int) %C] = gen_%(b%c%)",
110 "setcc_gen_code[(int) %C] = CODE_FOR_%(s%c%)",
111 "movcc_gen_code[(int) %A] = CODE_FOR_%(mov%acc%)",
112 "cbranch_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cbranch%a4%)",
113 "cmov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmov%a6%)",
114 "cstore_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cstore%a4%)",
115 "reload_in_optab[(int) %A] = CODE_FOR_%(reload_in%a%)",
116 "reload_out_optab[(int) %A] = CODE_FOR_%(reload_out%a%)",
117 "movstr_optab[(int) %A] = CODE_FOR_%(movstr%a%)",
118 "clrstr_optab[(int) %A] = CODE_FOR_%(clrstr%a%)" };
120 static void gen_insn PARAMS ((rtx));
126 const char *name = XSTR (insn, 0);
127 int m1 = 0, m2 = 0, op = 0;
130 const char *np, *pp, *p, *q;
132 /* Don't mention instructions whose names are the null string.
133 They are in the machine description just to be recognized. */
137 /* See if NAME matches one of the patterns we have for the optabs we know
140 for (pindex = 0; pindex < sizeof optabs / sizeof optabs[0]; pindex++)
142 int force_float = 0, force_int = 0;
143 int force_consec = 0;
146 for (pp = optabs[pindex]; pp[0] != '%' || pp[1] != '('; pp++)
149 for (pp += 2, np = name; matches && ! (pp[0] == '%' && pp[1] == ')');
170 for (op = 0; op < NUM_RTX_CODE; op++)
172 for (p = GET_RTX_NAME(op), q = np; *p; p++, q++)
176 /* We have to be concerned about matching "gt" and
177 missing "gtu", e.g., so verify we have reached the
178 end of thing we are to match. */
179 if (*p == 0 && *q == 0 && GET_RTX_CLASS(op) == '<')
183 if (op == NUM_RTX_CODE)
186 np += strlen (GET_RTX_NAME(op));
190 /* This loop will stop at the first prefix match, so
191 look through the modes in reverse order, in case
192 EXTRA_CC_MODES was used and CC is a prefix of the
193 CC modes (as it should be). */
194 for (i = ((int) MAX_MACHINE_MODE) - 1; i >= 0; i--)
196 for (p = GET_MODE_NAME(i), q = np; *p; p++, q++)
197 if (TOLOWER (*p) != *q)
201 && (! force_int || mode_class[i] == MODE_INT)
202 && (! force_float || mode_class[i] == MODE_FLOAT))
209 m1 = i, np += strlen (GET_MODE_NAME(i));
211 m2 = i, np += strlen (GET_MODE_NAME(i));
213 force_int = force_float = 0;
221 if (matches && pp[0] == '%' && pp[1] == ')'
223 && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
227 if (pindex == sizeof optabs / sizeof optabs[0])
230 /* We found a match. If this pattern is only conditionally present,
231 write out the "if" and two extra blanks. */
233 if (*XSTR (insn, 2) != 0)
234 printf (" if (HAVE_%s)\n ", name);
238 /* Now write out the initialization, making all required substitutions. */
239 for (pp = optabs[pindex]; *pp; pp++)
247 case 'I': case 'F': case 'N':
250 for (np = GET_MODE_NAME(m1); *np; np++)
251 putchar (TOLOWER (*np));
254 for (np = GET_MODE_NAME(m2); *np; np++)
255 putchar (TOLOWER (*np));
258 printf ("%smode", GET_MODE_NAME(m1));
261 printf ("%smode", GET_MODE_NAME(m2));
264 printf ("%s", GET_RTX_NAME(op));
267 for (np = GET_RTX_NAME(op); *np; np++)
268 putchar (TOUPPER (*np));
280 register PTR val = (PTR) malloc (size);
283 fatal ("virtual memory exhausted");
295 ptr = (PTR) realloc (old, size);
297 ptr = (PTR) malloc (size);
299 fatal ("virtual memory exhausted");
303 extern int main PARAMS ((int, char **));
312 progname = "genopinit";
315 fatal ("No input file name.");
317 if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
318 return (FATAL_EXIT_CODE);
320 printf ("/* Generated automatically by the program `genopinit'\n\
321 from the machine description file `md'. */\n\n");
323 printf ("#include \"config.h\"\n");
324 printf ("#include \"system.h\"\n");
325 printf ("#include \"rtl.h\"\n");
326 printf ("#include \"flags.h\"\n");
327 printf ("#include \"insn-flags.h\"\n");
328 printf ("#include \"insn-codes.h\"\n");
329 printf ("#include \"insn-config.h\"\n");
330 printf ("#include \"recog.h\"\n");
331 printf ("#include \"expr.h\"\n");
332 printf ("#include \"reload.h\"\n\n");
334 printf ("void\ninit_all_optabs ()\n{\n");
336 /* Read the machine description. */
340 int line_no, insn_code_number = 0;
342 desc = read_md_rtx (&line_no, &insn_code_number);
346 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
353 return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
356 /* Define this so we can link with print-rtl.o to get debug_rtx function. */
359 int code ATTRIBUTE_UNUSED;