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gcc.gnu.org Git - gcc.git/blob - gcc/genopinit.c
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
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 full integer modes should be considered for the next mode, and $F
50 means that only float modes should be considered.
51 $P means that both full and partial integer modes should be considered.
53 $V means to emit 'v' if the first mode is a MODE_FLOAT mode.
55 For some optabs, we store the operation by RTL codes. These are only
56 used for comparisons. In that case, $c and $C are the lower-case and
57 upper-case forms of the comparison, respectively. */
59 static const char * const optabs
[] =
60 { "extendtab[$B][$A][0] = CODE_FOR_$(extend$a$b2$)",
61 "extendtab[$B][$A][1] = CODE_FOR_$(zero_extend$a$b2$)",
62 "fixtab[$A][$B][0] = CODE_FOR_$(fix$F$a$I$b2$)",
63 "fixtab[$A][$B][1] = CODE_FOR_$(fixuns$F$a$b2$)",
64 "fixtrunctab[$A][$B][0] = CODE_FOR_$(fix_trunc$F$a$I$b2$)",
65 "fixtrunctab[$A][$B][1] = CODE_FOR_$(fixuns_trunc$F$a$I$b2$)",
66 "floattab[$B][$A][0] = CODE_FOR_$(float$I$a$F$b2$)",
67 "floattab[$B][$A][1] = CODE_FOR_$(floatuns$I$a$F$b2$)",
68 "add_optab->handlers[$A].insn_code = CODE_FOR_$(add$P$a3$)",
69 "addv_optab->handlers[(int) $A].insn_code =\n\
70 add_optab->handlers[(int) $A].insn_code = CODE_FOR_$(add$F$a3$)",
71 "addv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(addv$I$a3$)",
72 "sub_optab->handlers[$A].insn_code = CODE_FOR_$(sub$P$a3$)",
73 "subv_optab->handlers[(int) $A].insn_code =\n\
74 sub_optab->handlers[(int) $A].insn_code = CODE_FOR_$(sub$F$a3$)",
75 "subv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(subv$I$a3$)",
76 "smul_optab->handlers[$A].insn_code = CODE_FOR_$(mul$P$a3$)",
77 "smulv_optab->handlers[(int) $A].insn_code =\n\
78 smul_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mul$F$a3$)",
79 "smulv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(mulv$I$a3$)",
80 "umul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(umul$a3_highpart$)",
81 "smul_highpart_optab->handlers[$A].insn_code = CODE_FOR_$(smul$a3_highpart$)",
82 "smul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(mul$a$b3$)$N",
83 "umul_widen_optab->handlers[$B].insn_code = CODE_FOR_$(umul$a$b3$)$N",
84 "sdiv_optab->handlers[$A].insn_code = CODE_FOR_$(div$a3$)",
85 "sdivv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(div$V$I$a3$)",
86 "udiv_optab->handlers[$A].insn_code = CODE_FOR_$(udiv$I$a3$)",
87 "sdivmod_optab->handlers[$A].insn_code = CODE_FOR_$(divmod$a4$)",
88 "udivmod_optab->handlers[$A].insn_code = CODE_FOR_$(udivmod$a4$)",
89 "smod_optab->handlers[$A].insn_code = CODE_FOR_$(mod$a3$)",
90 "umod_optab->handlers[$A].insn_code = CODE_FOR_$(umod$a3$)",
91 "ftrunc_optab->handlers[$A].insn_code = CODE_FOR_$(ftrunc$F$a2$)",
92 "and_optab->handlers[$A].insn_code = CODE_FOR_$(and$a3$)",
93 "ior_optab->handlers[$A].insn_code = CODE_FOR_$(ior$a3$)",
94 "xor_optab->handlers[$A].insn_code = CODE_FOR_$(xor$a3$)",
95 "ashl_optab->handlers[$A].insn_code = CODE_FOR_$(ashl$a3$)",
96 "ashr_optab->handlers[$A].insn_code = CODE_FOR_$(ashr$a3$)",
97 "lshr_optab->handlers[$A].insn_code = CODE_FOR_$(lshr$a3$)",
98 "rotl_optab->handlers[$A].insn_code = CODE_FOR_$(rotl$a3$)",
99 "rotr_optab->handlers[$A].insn_code = CODE_FOR_$(rotr$a3$)",
100 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(smin$I$a3$)",
101 "smin_optab->handlers[$A].insn_code = CODE_FOR_$(min$F$a3$)",
102 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(smax$I$a3$)",
103 "smax_optab->handlers[$A].insn_code = CODE_FOR_$(max$F$a3$)",
104 "umin_optab->handlers[$A].insn_code = CODE_FOR_$(umin$I$a3$)",
105 "umax_optab->handlers[$A].insn_code = CODE_FOR_$(umax$I$a3$)",
106 "neg_optab->handlers[$A].insn_code = CODE_FOR_$(neg$P$a2$)",
107 "negv_optab->handlers[(int) $A].insn_code =\n\
108 neg_optab->handlers[(int) $A].insn_code = CODE_FOR_$(neg$F$a2$)",
109 "negv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(negv$I$a2$)",
110 "abs_optab->handlers[$A].insn_code = CODE_FOR_$(abs$P$a2$)",
111 "absv_optab->handlers[(int) $A].insn_code =\n\
112 abs_optab->handlers[(int) $A].insn_code = CODE_FOR_$(abs$F$a2$)",
113 "absv_optab->handlers[(int) $A].insn_code = CODE_FOR_$(absv$I$a2$)",
114 "sqrt_optab->handlers[$A].insn_code = CODE_FOR_$(sqrt$a2$)",
115 "sin_optab->handlers[$A].insn_code = CODE_FOR_$(sin$a2$)",
116 "cos_optab->handlers[$A].insn_code = CODE_FOR_$(cos$a2$)",
117 "strlen_optab->handlers[$A].insn_code = CODE_FOR_$(strlen$a$)",
118 "one_cmpl_optab->handlers[$A].insn_code = CODE_FOR_$(one_cmpl$a2$)",
119 "ffs_optab->handlers[$A].insn_code = CODE_FOR_$(ffs$a2$)",
120 "mov_optab->handlers[$A].insn_code = CODE_FOR_$(mov$a$)",
121 "movstrict_optab->handlers[$A].insn_code = CODE_FOR_$(movstrict$a$)",
122 "cmp_optab->handlers[$A].insn_code = CODE_FOR_$(cmp$a$)",
123 "tst_optab->handlers[$A].insn_code = CODE_FOR_$(tst$a$)",
124 "bcc_gen_fctn[$C] = gen_$(b$c$)",
125 "setcc_gen_code[$C] = CODE_FOR_$(s$c$)",
126 "movcc_gen_code[$A] = CODE_FOR_$(mov$acc$)",
127 "cbranch_optab->handlers[$A].insn_code = CODE_FOR_$(cbranch$a4$)",
128 "cmov_optab->handlers[$A].insn_code = CODE_FOR_$(cmov$a6$)",
129 "cstore_optab->handlers[$A].insn_code = CODE_FOR_$(cstore$a4$)",
130 "push_optab->handlers[$A].insn_code = CODE_FOR_$(push$a1$)",
131 "reload_in_optab[$A] = CODE_FOR_$(reload_in$a$)",
132 "reload_out_optab[$A] = CODE_FOR_$(reload_out$a$)",
133 "movstr_optab[$A] = CODE_FOR_$(movstr$a$)",
134 "clrstr_optab[$A] = CODE_FOR_$(clrstr$a$)" };
136 static void gen_insn
PARAMS ((rtx
));
142 const char *name
= XSTR (insn
, 0);
143 int m1
= 0, m2
= 0, op
= 0;
146 const char *np
, *pp
, *p
, *q
;
148 /* Don't mention instructions whose names are the null string.
149 They are in the machine description just to be recognized. */
153 /* See if NAME matches one of the patterns we have for the optabs we know
156 for (pindex
= 0; pindex
< ARRAY_SIZE (optabs
); pindex
++)
158 int force_float
= 0, force_int
= 0, force_partial_int
= 0;
159 int force_consec
= 0;
162 for (pp
= optabs
[pindex
]; pp
[0] != '$' || pp
[1] != '('; pp
++)
165 for (pp
+= 2, np
= name
; matches
&& ! (pp
[0] == '$' && pp
[1] == ')');
183 force_partial_int
= 1;
191 for (op
= 0; op
< NUM_RTX_CODE
; op
++)
193 for (p
= GET_RTX_NAME(op
), q
= np
; *p
; p
++, q
++)
197 /* We have to be concerned about matching "gt" and
198 missing "gtu", e.g., so verify we have reached the
199 end of thing we are to match. */
200 if (*p
== 0 && *q
== 0 && GET_RTX_CLASS(op
) == '<')
204 if (op
== NUM_RTX_CODE
)
207 np
+= strlen (GET_RTX_NAME(op
));
211 /* This loop will stop at the first prefix match, so
212 look through the modes in reverse order, in case
213 EXTRA_CC_MODES was used and CC is a prefix of the
214 CC modes (as it should be). */
215 for (i
= ((int) MAX_MACHINE_MODE
) - 1; i
>= 0; i
--)
217 for (p
= GET_MODE_NAME(i
), q
= np
; *p
; p
++, q
++)
218 if (TOLOWER (*p
) != *q
)
222 && (! force_int
|| mode_class
[i
] == MODE_INT
223 || mode_class
[i
] == MODE_VECTOR_INT
)
224 && (! force_partial_int
225 || mode_class
[i
] == MODE_INT
226 || mode_class
[i
] == MODE_PARTIAL_INT
227 || mode_class
[i
] == MODE_VECTOR_INT
)
228 && (! force_float
|| mode_class
[i
] == MODE_FLOAT
229 || mode_class
[i
] == MODE_VECTOR_FLOAT
))
236 m1
= i
, np
+= strlen (GET_MODE_NAME(i
));
238 m2
= i
, np
+= strlen (GET_MODE_NAME(i
));
240 force_int
= force_partial_int
= force_float
= 0;
248 if (matches
&& pp
[0] == '$' && pp
[1] == ')'
250 && (! force_consec
|| (int) GET_MODE_WIDER_MODE(m1
) == m2
))
254 if (pindex
== ARRAY_SIZE (optabs
))
257 /* We found a match. If this pattern is only conditionally present,
258 write out the "if" and two extra blanks. */
260 if (*XSTR (insn
, 2) != 0)
261 printf (" if (HAVE_%s)\n ", name
);
265 /* Now write out the initialization, making all required substitutions. */
266 for (pp
= optabs
[pindex
]; *pp
; pp
++)
274 case 'I': case 'F': case 'N':
277 if (GET_MODE_CLASS (m1
) == MODE_FLOAT
)
281 for (np
= GET_MODE_NAME(m1
); *np
; np
++)
282 putchar (TOLOWER (*np
));
285 for (np
= GET_MODE_NAME(m2
); *np
; np
++)
286 putchar (TOLOWER (*np
));
289 printf ("(int) %smode", GET_MODE_NAME(m1
));
292 printf ("(int) %smode", GET_MODE_NAME(m2
));
295 printf ("%s", GET_RTX_NAME(op
));
299 for (np
= GET_RTX_NAME(op
); *np
; np
++)
300 putchar (TOUPPER (*np
));
308 extern int main
PARAMS ((int, char **));
317 progname
= "genopinit";
320 fatal ("no input file name");
322 if (init_md_reader_args (argc
, argv
) != SUCCESS_EXIT_CODE
)
323 return (FATAL_EXIT_CODE
);
325 printf ("/* Generated automatically by the program `genopinit'\n\
326 from the machine description file `md'. */\n\n");
328 printf ("#include \"config.h\"\n");
329 printf ("#include \"system.h\"\n");
330 printf ("#include \"rtl.h\"\n");
331 printf ("#include \"flags.h\"\n");
332 printf ("#include \"insn-config.h\"\n");
333 printf ("#include \"recog.h\"\n");
334 printf ("#include \"expr.h\"\n");
335 printf ("#include \"optabs.h\"\n");
336 printf ("#include \"reload.h\"\n\n");
338 printf ("void\ninit_all_optabs ()\n{\n");
340 /* Read the machine description. */
344 int line_no
, insn_code_number
= 0;
346 desc
= read_md_rtx (&line_no
, &insn_code_number
);
350 if (GET_CODE (desc
) == DEFINE_INSN
|| GET_CODE (desc
) == DEFINE_EXPAND
)
357 return (ferror (stdout
) != 0 ? FATAL_EXIT_CODE
: SUCCESS_EXIT_CODE
);
360 /* Define this so we can link with print-rtl.o to get debug_rtx function. */
363 int code ATTRIBUTE_UNUSED
;
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