1 /* Generate code to initialize optabs from machine description.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
28 static struct obstack obstack;
29 struct obstack *rtl_obstack = &obstack;
31 #define obstack_chunk_alloc xmalloc
32 #define obstack_chunk_free free
35 extern rtx read_rtx ();
41 /* Many parts of GCC use arrays that are indexed by machine mode and
42 contain the insn codes for pattern in the MD file that perform a given
43 operation on operands of that mode.
45 These patterns are present in the MD file with names that contain
46 the mode(s) used and the name of the operation. This program
47 writes a function `init_all_optabs' that initializes the optabs with
48 all the insn codes of the relevant patterns present in the MD file.
50 This array contains a list of optabs that need to be initialized. Within
51 each string, the name of the pattern to be matched against is delimited
52 with %( and %). In the string, %a and %b are used to match a short mode
53 name (the part of the mode name not including `mode' and converted to
54 lower-case). When writing out the initializer, the entire string is
55 used. %A and %B are replaced with the full name of the mode; %a and %b
56 are replaced with the short form of the name, as above.
58 If %N is present in the pattern, it means the two modes must be consecutive
59 widths in the same mode class (e.g, QImode and HImode). %I means that
60 only integer modes should be considered for the next mode, and %F means
61 that only float modes should be considered.
63 For some optabs, we store the operation by RTL codes. These are only
64 used for comparisons. In that case, %c and %C are the lower-case and
65 upper-case forms of the comparison, respectively. */
67 /* The reason we use \% is to avoid sequences of the form %-capletter-%
68 which SCCS treats as magic. This gets warnings which you should ignore. */
71 { "extendtab[(int) %B][(int) %A][0] = CODE_FOR_%(extend%a\%b2%)",
72 "extendtab[(int) %B][(int) %A][1] = CODE_FOR_%(zero_extend%a\%b2%)",
73 "fixtab[(int) %A][(int) %B][0] = CODE_FOR_%(fix%F\%a%I\%b2%)",
74 "fixtab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns%F\%a%b2%)",
75 "fixtrunctab[(int) %A][(int) %B][0] = CODE_FOR_%(fix_trunc%F\%a%I\%b2%)",
76 "fixtrunctab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns_trunc%F\%a%I\%b2%)",
77 "floattab[(int) %B][(int) %A][0] = CODE_FOR_%(float%I\%a%F\%b2%)",
78 "floattab[(int) %B][(int) %A][1] = CODE_FOR_%(floatuns%I\%a%F\%b2%)",
79 "add_optab->handlers[(int) %A].insn_code = CODE_FOR_%(add%a3%)",
80 "sub_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sub%a3%)",
81 "smul_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mul%a3%)",
82 "umul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umul%a3_highpart%)",
83 "smul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smul%a3_highpart%)",
84 "smul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(mul%a%b3%)%N",
85 "umul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(umul%a%b3%)%N",
86 "sdiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%I\%a3%)",
87 "udiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udiv%I\%a3%)",
88 "sdivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(divmod%a4%)",
89 "udivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udivmod%a4%)",
90 "smod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mod%a3%)",
91 "umod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umod%a3%)",
92 "flodiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%F\%a3%)",
93 "ftrunc_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ftrunc%F\%a2%)",
94 "and_optab->handlers[(int) %A].insn_code = CODE_FOR_%(and%a3%)",
95 "ior_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ior%a3%)",
96 "xor_optab->handlers[(int) %A].insn_code = CODE_FOR_%(xor%a3%)",
97 "ashl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashl%a3%)",
98 "ashr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashr%a3%)",
99 "lshr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(lshr%a3%)",
100 "rotl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotl%a3%)",
101 "rotr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotr%a3%)",
102 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smin%I\%a3%)",
103 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(min%F\%a3%)",
104 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smax%I\%a3%)",
105 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(max%F\%a3%)",
106 "umin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umin%I\%a3%)",
107 "umax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umax%I\%a3%)",
108 "neg_optab->handlers[(int) %A].insn_code = CODE_FOR_%(neg%a2%)",
109 "abs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(abs%a2%)",
110 "sqrt_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sqrt%a2%)",
111 "sin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sin%a2%)",
112 "cos_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cos%a2%)",
113 "strlen_optab->handlers[(int) %A].insn_code = CODE_FOR_%(strlen%a%)",
114 "one_cmpl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(one_cmpl%a2%)",
115 "ffs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ffs%a2%)",
116 "mov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mov%a%)",
117 "movstrict_optab->handlers[(int) %A].insn_code = CODE_FOR_%(movstrict%a%)",
118 "cmp_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmp%a%)",
119 "tst_optab->handlers[(int) %A].insn_code = CODE_FOR_%(tst%a%)",
120 "bcc_gen_fctn[(int) %C] = gen_%(b%c%)",
121 "setcc_gen_code[(int) %C] = CODE_FOR_%(s%c%)",
122 "movcc_gen_code[(int) %A] = CODE_FOR_%(mov%acc%)",
123 "reload_in_optab[(int) %A] = CODE_FOR_%(reload_in%a%)",
124 "reload_out_optab[(int) %A] = CODE_FOR_%(reload_out%a%)",
125 "movstr_optab[(int) %A] = CODE_FOR_%(movstr%a%)" };
127 /* Allow linking with print-rtl.c. */
128 char **insn_name_ptr;
134 char *name = XSTR (insn, 0);
138 char *np, *pp, *p, *q;
139 struct obstack *obstack_ptr;
141 /* Don't mention instructions whose names are the null string.
142 They are in the machine description just to be recognized. */
146 /* See if NAME matches one of the patterns we have for the optabs we know
149 for (pindex = 0; pindex < sizeof optabs / sizeof optabs[0]; pindex++)
151 int force_float = 0, force_int = 0;
152 int force_consec = 0;
155 for (pp = optabs[pindex]; pp[0] != '%' || pp[1] != '('; pp++)
158 for (pp += 2, np = name; matches && ! (pp[0] == '%' && pp[1] == ')');
179 for (op = 0; op < NUM_RTX_CODE; op++)
181 for (p = rtx_name[op], q = np; *p; p++, q++)
185 /* We have to be concerned about matching "gt" and
186 missing "gtu", e.g., so verify we have reached the
187 end of thing we are to match. We do not have this
188 problem with modes since no mode is a prefix of
190 if (*p == 0 && *q == 0 && rtx_class[op] == '<')
194 if (op == NUM_RTX_CODE)
197 np += strlen (rtx_name[op]);
201 for (i = 0; i < (int) MAX_MACHINE_MODE; i++)
203 for (p = mode_name[i], q = np; *p; p++, q++)
204 if (tolower (*p) != *q)
208 && (! force_int || mode_class[i] == MODE_INT)
209 && (! force_float || mode_class[i] == MODE_FLOAT))
213 if (i == (int) MAX_MACHINE_MODE)
216 m1 = i, np += strlen (mode_name[i]);
218 m2 = i, np += strlen (mode_name[i]);
220 force_int = force_float = 0;
228 if (matches && pp[0] == '%' && pp[1] == ')'
230 && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2))
234 if (pindex == sizeof optabs / sizeof optabs[0])
237 /* We found a match. If this pattern is only conditionally present,
238 write out the "if" and two extra blanks. */
240 if (*XSTR (insn, 2) != 0)
241 printf (" if (HAVE_%s)\n ", name);
245 /* Now write out the initialization, making all required substitutions. */
246 for (pp = optabs[pindex]; *pp; pp++)
254 case 'I': case 'F': case 'N':
257 for (np = mode_name[m1]; *np; np++)
258 printf ("%c", tolower (*np));
261 for (np = mode_name[m2]; *np; np++)
262 printf ("%c", tolower (*np));
265 printf ("%smode", mode_name[m1]);
268 printf ("%smode", mode_name[m2]);
271 printf ("%s", rtx_name[op]);
274 for (np = rtx_name[op]; *np; np++)
275 printf ("%c", toupper (*np));
287 register char *val = (char *) malloc (size);
290 fatal ("virtual memory exhausted");
300 char *result = (char *) realloc (ptr, size);
302 fatal ("virtual memory exhausted");
310 fprintf (stderr, "genopinit: ");
311 fprintf (stderr, s, a1, a2);
312 fprintf (stderr, "\n");
313 exit (FATAL_EXIT_CODE);
316 /* More 'friendly' abort that prints the line and file.
317 config.h can #define abort fancy_abort if you like that sort of thing. */
322 fatal ("Internal gcc abort.");
336 obstack_init (rtl_obstack);
339 fatal ("No input file name.");
341 infile = fopen (argv[1], "r");
345 exit (FATAL_EXIT_CODE);
350 printf ("/* Generated automatically by the program `genopinit'\n\
351 from the machine description file `md'. */\n\n");
353 printf ("#include \"config.h\"\n");
354 printf ("#include \"rtl.h\"\n");
355 printf ("#include \"flags.h\"\n");
356 printf ("#include \"insn-flags.h\"\n");
357 printf ("#include \"insn-codes.h\"\n");
358 printf ("#include \"insn-config.h\"\n");
359 printf ("#include \"recog.h\"\n");
360 printf ("#include \"expr.h\"\n");
361 printf ("#include \"reload.h\"\n\n");
363 printf ("void\ninit_all_optabs ()\n{\n");
365 /* Read the machine description. */
369 c = read_skip_spaces (infile);
374 desc = read_rtx (infile);
375 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
382 exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);