1 /* Generate code to initialize optabs from machine description.
2 Copyright (C) 1993, 94-98, 1999 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. */
27 static struct obstack obstack
;
28 struct obstack
*rtl_obstack
= &obstack
;
30 #define obstack_chunk_alloc xmalloc
31 #define obstack_chunk_free free
33 void fatal
PVPROTO ((const char *, ...))
34 ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN
;
36 /* Many parts of GCC use arrays that are indexed by machine mode and
37 contain the insn codes for pattern in the MD file that perform a given
38 operation on operands of that mode.
40 These patterns are present in the MD file with names that contain
41 the mode(s) used and the name of the operation. This program
42 writes a function `init_all_optabs' that initializes the optabs with
43 all the insn codes of the relevant patterns present in the MD file.
45 This array contains a list of optabs that need to be initialized. Within
46 each string, the name of the pattern to be matched against is delimited
47 with %( and %). In the string, %a and %b are used to match a short mode
48 name (the part of the mode name not including `mode' and converted to
49 lower-case). When writing out the initializer, the entire string is
50 used. %A and %B are replaced with the full name of the mode; %a and %b
51 are replaced with the short form of the name, as above.
53 If %N is present in the pattern, it means the two modes must be consecutive
54 widths in the same mode class (e.g, QImode and HImode). %I means that
55 only integer modes should be considered for the next mode, and %F means
56 that only float modes should be considered.
58 For some optabs, we store the operation by RTL codes. These are only
59 used for comparisons. In that case, %c and %C are the lower-case and
60 upper-case forms of the comparison, respectively. */
62 /* The reason we use \% is to avoid sequences of the form %-capletter-%
63 which SCCS treats as magic. This gets warnings which you should ignore. */
65 const char *optabs
[] =
66 { "extendtab[(int) %B][(int) %A][0] = CODE_FOR_%(extend%a\%b2%)",
67 "extendtab[(int) %B][(int) %A][1] = CODE_FOR_%(zero_extend%a\%b2%)",
68 "fixtab[(int) %A][(int) %B][0] = CODE_FOR_%(fix%F\%a%I\%b2%)",
69 "fixtab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns%F\%a%b2%)",
70 "fixtrunctab[(int) %A][(int) %B][0] = CODE_FOR_%(fix_trunc%F\%a%I\%b2%)",
71 "fixtrunctab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns_trunc%F\%a%I\%b2%)",
72 "floattab[(int) %B][(int) %A][0] = CODE_FOR_%(float%I\%a%F\%b2%)",
73 "floattab[(int) %B][(int) %A][1] = CODE_FOR_%(floatuns%I\%a%F\%b2%)",
74 "add_optab->handlers[(int) %A].insn_code = CODE_FOR_%(add%a3%)",
75 "sub_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sub%a3%)",
76 "smul_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mul%a3%)",
77 "umul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umul%a3_highpart%)",
78 "smul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smul%a3_highpart%)",
79 "smul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(mul%a%b3%)%N",
80 "umul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(umul%a%b3%)%N",
81 "sdiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%I\%a3%)",
82 "udiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udiv%I\%a3%)",
83 "sdivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(divmod%a4%)",
84 "udivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udivmod%a4%)",
85 "smod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mod%a3%)",
86 "umod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umod%a3%)",
87 "flodiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%F\%a3%)",
88 "ftrunc_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ftrunc%F\%a2%)",
89 "and_optab->handlers[(int) %A].insn_code = CODE_FOR_%(and%a3%)",
90 "ior_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ior%a3%)",
91 "xor_optab->handlers[(int) %A].insn_code = CODE_FOR_%(xor%a3%)",
92 "ashl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashl%a3%)",
93 "ashr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashr%a3%)",
94 "lshr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(lshr%a3%)",
95 "rotl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotl%a3%)",
96 "rotr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotr%a3%)",
97 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smin%I\%a3%)",
98 "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(min%F\%a3%)",
99 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smax%I\%a3%)",
100 "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(max%F\%a3%)",
101 "umin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umin%I\%a3%)",
102 "umax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umax%I\%a3%)",
103 "neg_optab->handlers[(int) %A].insn_code = CODE_FOR_%(neg%a2%)",
104 "abs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(abs%a2%)",
105 "sqrt_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sqrt%a2%)",
106 "sin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sin%a2%)",
107 "cos_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cos%a2%)",
108 "strlen_optab->handlers[(int) %A].insn_code = CODE_FOR_%(strlen%a%)",
109 "one_cmpl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(one_cmpl%a2%)",
110 "ffs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ffs%a2%)",
111 "mov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mov%a%)",
112 "movstrict_optab->handlers[(int) %A].insn_code = CODE_FOR_%(movstrict%a%)",
113 "cmp_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmp%a%)",
114 "tst_optab->handlers[(int) %A].insn_code = CODE_FOR_%(tst%a%)",
115 "bcc_gen_fctn[(int) %C] = gen_%(b%c%)",
116 "setcc_gen_code[(int) %C] = CODE_FOR_%(s%c%)",
117 "movcc_gen_code[(int) %A] = CODE_FOR_%(mov%acc%)",
118 "reload_in_optab[(int) %A] = CODE_FOR_%(reload_in%a%)",
119 "reload_out_optab[(int) %A] = CODE_FOR_%(reload_out%a%)",
120 "movstr_optab[(int) %A] = CODE_FOR_%(movstr%a%)",
121 "clrstr_optab[(int) %A] = CODE_FOR_%(clrstr%a%)" };
123 /* Allow linking with print-rtl.c. */
124 char **insn_name_ptr
;
126 static void gen_insn
PROTO((rtx
));
132 char *name
= XSTR (insn
, 0);
136 const char *np
, *pp
, *p
, *q
;
138 /* Don't mention instructions whose names are the null string.
139 They are in the machine description just to be recognized. */
143 /* See if NAME matches one of the patterns we have for the optabs we know
146 for (pindex
= 0; pindex
< sizeof optabs
/ sizeof optabs
[0]; pindex
++)
148 int force_float
= 0, force_int
= 0;
149 int force_consec
= 0;
152 for (pp
= optabs
[pindex
]; pp
[0] != '%' || pp
[1] != '('; pp
++)
155 for (pp
+= 2, np
= name
; matches
&& ! (pp
[0] == '%' && pp
[1] == ')');
176 for (op
= 0; op
< NUM_RTX_CODE
; op
++)
178 for (p
= GET_RTX_NAME(op
), q
= np
; *p
; p
++, q
++)
182 /* We have to be concerned about matching "gt" and
183 missing "gtu", e.g., so verify we have reached the
184 end of thing we are to match. */
185 if (*p
== 0 && *q
== 0 && GET_RTX_CLASS(op
) == '<')
189 if (op
== NUM_RTX_CODE
)
192 np
+= strlen (GET_RTX_NAME(op
));
196 /* This loop will stop at the first prefix match, so
197 look through the modes in reverse order, in case
198 EXTRA_CC_MODES was used and CC is a prefix of the
199 CC modes (as it should be). */
200 for (i
= ((int) MAX_MACHINE_MODE
) - 1; i
>= 0; i
--)
202 for (p
= GET_MODE_NAME(i
), q
= np
; *p
; p
++, q
++)
203 if (tolower ((unsigned char)*p
) != *q
)
207 && (! force_int
|| mode_class
[i
] == MODE_INT
)
208 && (! force_float
|| mode_class
[i
] == MODE_FLOAT
))
215 m1
= i
, np
+= strlen (GET_MODE_NAME(i
));
217 m2
= i
, np
+= strlen (GET_MODE_NAME(i
));
219 force_int
= force_float
= 0;
227 if (matches
&& pp
[0] == '%' && pp
[1] == ')'
229 && (! force_consec
|| (int) GET_MODE_WIDER_MODE(m1
) == m2
))
233 if (pindex
== sizeof optabs
/ sizeof optabs
[0])
236 /* We found a match. If this pattern is only conditionally present,
237 write out the "if" and two extra blanks. */
239 if (*XSTR (insn
, 2) != 0)
240 printf (" if (HAVE_%s)\n ", name
);
244 /* Now write out the initialization, making all required substitutions. */
245 for (pp
= optabs
[pindex
]; *pp
; pp
++)
253 case 'I': case 'F': case 'N':
256 for (np
= GET_MODE_NAME(m1
); *np
; np
++)
257 printf ("%c", tolower ((unsigned char)*np
));
260 for (np
= GET_MODE_NAME(m2
); *np
; np
++)
261 printf ("%c", tolower ((unsigned char)*np
));
264 printf ("%smode", GET_MODE_NAME(m1
));
267 printf ("%smode", GET_MODE_NAME(m2
));
270 printf ("%s", GET_RTX_NAME(op
));
273 for (np
= GET_RTX_NAME(op
); *np
; np
++)
274 printf ("%c", toupper ((unsigned char)*np
));
286 register PTR val
= (PTR
) malloc (size
);
289 fatal ("virtual memory exhausted");
301 ptr
= (PTR
) realloc (old
, size
);
303 ptr
= (PTR
) malloc (size
);
305 fatal ("virtual memory exhausted");
310 fatal
VPROTO ((const char *format
, ...))
312 #ifndef ANSI_PROTOTYPES
317 VA_START (ap
, format
);
319 #ifndef ANSI_PROTOTYPES
320 format
= va_arg (ap
, const char *);
323 fprintf (stderr
, "genopinit: ");
324 vfprintf (stderr
, format
, ap
);
326 fprintf (stderr
, "\n");
327 exit (FATAL_EXIT_CODE
);
339 obstack_init (rtl_obstack
);
342 fatal ("No input file name.");
344 infile
= fopen (argv
[1], "r");
348 exit (FATAL_EXIT_CODE
);
353 printf ("/* Generated automatically by the program `genopinit'\n\
354 from the machine description file `md'. */\n\n");
356 printf ("#include \"config.h\"\n");
357 printf ("#include \"system.h\"\n");
358 printf ("#include \"rtl.h\"\n");
359 printf ("#include \"flags.h\"\n");
360 printf ("#include \"insn-flags.h\"\n");
361 printf ("#include \"insn-codes.h\"\n");
362 printf ("#include \"insn-config.h\"\n");
363 printf ("#include \"recog.h\"\n");
364 printf ("#include \"expr.h\"\n");
365 printf ("#include \"reload.h\"\n\n");
367 printf ("void\ninit_all_optabs ()\n{\n");
369 /* Read the machine description. */
373 c
= read_skip_spaces (infile
);
378 desc
= read_rtx (infile
);
379 if (GET_CODE (desc
) == DEFINE_INSN
|| GET_CODE (desc
) == DEFINE_EXPAND
)
386 exit (ferror (stdout
) != 0 ? FATAL_EXIT_CODE
: SUCCESS_EXIT_CODE
);