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, 675 Mass Ave, Cambridge, MA 02139, USA. */
27 static struct obstack obstack;
28 struct obstack *rtl_obstack = &obstack;
30 #define obstack_chunk_alloc xmalloc
31 #define obstack_chunk_free free
34 extern rtx read_rtx ();
40 /* Many parts of GCC use arrays that are indexed by machine mode and
41 contain the insn codes for pattern in the MD file that perform a given
42 operation on operands of that mode.
44 These patterns are present in the MD file with names that contain
45 the mode(s) used and the name of the operation. This program
46 writes a function `init_all_optabs' that initializes the optabs with
47 all the insn codes of the relevant patterns present in the MD file.
49 This array contains a list of optabs that need to be initialized. Within
50 each string, the name of the pattern to be matched against is delimited
51 with %( and %). In the string, %a and %b are used to match a short mode
52 name (the part of the mode name not including `mode' and converted to
53 lower-case). When writing out the initializer, the entire string is
54 used. %A and %B are replaced with the full name of the mode; %a and %b
55 are replaced with the short form of the name, as above.
57 If %N is present in the pattern, it means the two modes must be consecutive
58 widths in the same mode class (e.g, QImode and HImode). %I means that
59 only integer modes should be considered for the next mode, and %F means
60 that only float modes should be considered.
62 For some optabs, we store the operation by RTL codes. These are only
63 used for comparisons. In that case, %c and %C are the lower-case and
64 upper-case forms of the comparison, respectively. */
66 /* The reason we use \% is to avoid sequences of the form %-capletter-%
67 which SCCS treats as magic. This gets warnings which you should ignore. */
70 { "extendtab[(int) %B][(int) %A][0] = CODE_FOR_%(extend%a\%b2%)",
71 "extendtab[(int) %B][(int) %A][1] = CODE_FOR_%(zero_extend%a\%b2%)",
72 "fixtab[(int) %A][(int) %B][0] = CODE_FOR_%(fix%F\%a%I\%b2%)",
73 "fixtab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns%F\%a%b2%)",
74 "fixtrunctab[(int) %A][(int) %B][0] = CODE_FOR_%(fix_trunc%F\%a%I\%b2%)",
75 "fixtrunctab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns_trunc%F\%a%I\%b2%)",
76 "floattab[(int) %B][(int) %A][0] = CODE_FOR_%(float%I\%a%F\%b2%)",
77 "floattab[(int) %B][(int) %A][1] = CODE_FOR_%(floatuns%I\%a%F\%b2%)",
78 "add_optab->handlers[(int) %A].insn_code = CODE_FOR_%(add%a3%)",
79 "sub_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sub%a3%)",
80 "smul_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mul%a3%)",
81 "umul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umul%a3_highpart%)",
82 "smul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smul%a3_highpart%)",
83 "smul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(mul%a%b3%)%N",
84 "umul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(umul%a%b3%)%N",
85 "sdiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%I\%a3%)",
86 "udiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udiv%I\%a3%)",
87 "sdivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(divmod%a4%)",
88 "udivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udivmod%a4%)",
89 "smod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mod%a3%)",
90 "umod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umod%a3%)",
91 "flodiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%F\%a3%)",
92 "ftrunc_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ftrunc%F\%a2%)",
93 "and_optab->handlers[(int) %A].insn_code = CODE_FOR_%(and%a3%)",
94 "ior_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ior%a3%)",
95 "xor_optab->handlers[(int) %A].insn_code = CODE_FOR_%(xor%a3%)",
96 "ashl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashl%a3%)",
97 "ashr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashr%a3%)",
98 "lshr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(lshr%a3%)",
99 "rotl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotl%a3%)",
100 "rotr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotr%a3%)",
101 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smin%I\%a3%)",
102 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(min%F\%a3%)",
103 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smax%I\%a3%)",
104 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(max%F\%a3%)",
105 "umin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umin%I\%a3%)",
106 "umax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umax%I\%a3%)",
107 "neg_optab->handlers[(int) %A].insn_code = CODE_FOR_%(neg%a2%)",
108 "abs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(abs%a2%)",
109 "sqrt_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sqrt%a2%)",
110 "sin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sin%a2%)",
111 "cos_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cos%a2%)",
112 "strlen_optab->handlers[(int) %A].insn_code = CODE_FOR_%(strlen%a%)",
113 "one_cmpl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(one_cmpl%a2%)",
114 "ffs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ffs%a2%)",
115 "mov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mov%a%)",
116 "movstrict_optab->handlers[(int) %A].insn_code = CODE_FOR_%(movstrict%a%)",
117 "cmp_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmp%a%)",
118 "tst_optab->handlers[(int) %A].insn_code = CODE_FOR_%(tst%a%)",
119 "bcc_gen_fctn[(int) %C] = gen_%(b%c%)",
120 "setcc_gen_code[(int) %C] = CODE_FOR_%(s%c%)",
121 "reload_in_optab[(int) %A] = CODE_FOR_%(reload_in%a%)",
122 "reload_out_optab[(int) %A] = CODE_FOR_%(reload_out%a%)",
123 "movstr_optab[(int) %A] = CODE_FOR_%(movstr%a%)" };
125 /* Allow linking with print-rtl.c. */
126 char **insn_name_ptr;
132 char *name = XSTR (insn, 0);
136 char *np, *pp, *p, *q;
137 struct obstack *obstack_ptr;
139 /* Don't mention instructions whose names are the null string.
140 They are in the machine description just to be recognized. */
144 /* See if NAME matches one of the patterns we have for the optabs we know
147 for (pindex = 0; pindex < sizeof optabs / sizeof optabs[0]; pindex++)
149 int force_float = 0, force_int = 0;
150 int force_consec = 0;
153 for (pp = optabs[pindex]; pp[0] != '%' || pp[1] != '('; pp++)
156 for (pp += 2, np = name; matches && ! (pp[0] == '%' && pp[1] == ')');
177 for (op = 0; op < NUM_RTX_CODE; op++)
179 for (p = rtx_name[op], q = np; *p; p++, q++)
183 /* We have to be concerned about matching "gt" and
184 missing "gtu", e.g., so verify we have reached the
185 end of thing we are to match. We do not have this
186 problem with modes since no mode is a prefix of
188 if (*p == 0 && *q == 0 && rtx_class[op] == '<')
192 if (op == NUM_RTX_CODE)
195 np += strlen (rtx_name[op]);
199 for (i = 0; i < (int) MAX_MACHINE_MODE; i++)
201 for (p = mode_name[i], q = np; *p; p++, q++)
202 if (tolower (*p) != *q)
206 && (! force_int || mode_class[i] == MODE_INT)
207 && (! force_float || mode_class[i] == MODE_FLOAT))
211 if (i == (int) MAX_MACHINE_MODE)
214 m1 = i, np += strlen (mode_name[i]);
216 m2 = i, np += strlen (mode_name[i]);
218 force_int = force_float = 0;
226 if (matches && pp[0] == '%' && pp[1] == ')'
228 && (! force_consec || (int) mode_wider_mode[m1] == m2))
232 if (pindex == sizeof optabs / sizeof optabs[0])
235 /* We found a match. If this pattern is only conditionally present,
236 write out the "if" and two extra blanks. */
238 if (*XSTR (insn, 2) != 0)
239 printf (" if (HAVE_%s)\n ", name);
243 /* Now write out the initialization, making all required substitutions. */
244 for (pp = optabs[pindex]; *pp; pp++)
252 case 'I': case 'F': case 'N':
255 for (np = mode_name[m1]; *np; np++)
256 printf ("%c", tolower (*np));
259 for (np = mode_name[m2]; *np; np++)
260 printf ("%c", tolower (*np));
263 printf ("%smode", mode_name[m1]);
266 printf ("%smode", mode_name[m2]);
269 printf ("%s", rtx_name[op]);
272 for (np = rtx_name[op]; *np; np++)
273 printf ("%c", toupper (*np));
285 register char *val = (char *) malloc (size);
288 fatal ("virtual memory exhausted");
298 char *result = (char *) realloc (ptr, size);
300 fatal ("virtual memory exhausted");
308 fprintf (stderr, "genopinit: ");
309 fprintf (stderr, s, a1, a2);
310 fprintf (stderr, "\n");
311 exit (FATAL_EXIT_CODE);
314 /* More 'friendly' abort that prints the line and file.
315 config.h can #define abort fancy_abort if you like that sort of thing. */
320 fatal ("Internal gcc abort.");
334 obstack_init (rtl_obstack);
337 fatal ("No input file name.");
339 infile = fopen (argv[1], "r");
343 exit (FATAL_EXIT_CODE);
348 printf ("/* Generated automatically by the program `genopinit'\n\
349 from the machine description file `md'. */\n\n");
351 printf ("#include \"config.h\"\n");
352 printf ("#include \"rtl.h\"\n");
353 printf ("#include \"flags.h\"\n");
354 printf ("#include \"insn-flags.h\"\n");
355 printf ("#include \"insn-codes.h\"\n");
356 printf ("#include \"insn-config.h\"\n");
357 printf ("#include \"recog.h\"\n");
358 printf ("#include \"expr.h\"\n");
359 printf ("#include \"reload.h\"\n\n");
361 printf ("void\ninit_all_optabs ()\n{\n");
363 /* Read the machine description. */
367 c = read_skip_spaces (infile);
372 desc = read_rtx (infile);
373 if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
380 exit (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);