Mercurial > hg > CbC > CbC_gcc
annotate gcc/gengenrtl.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
children |
rev | line source |
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0 | 1 /* Generate code to allocate RTL structures. |
145 | 2 Copyright (C) 1997-2020 Free Software Foundation, Inc. |
0 | 3 |
4 This file is part of GCC. | |
5 | |
6 GCC is free software; you can redistribute it and/or modify it under | |
7 the terms of the GNU General Public License as published by the Free | |
8 Software Foundation; either version 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with GCC; see the file COPYING3. If not see | |
18 <http://www.gnu.org/licenses/>. */ | |
19 | |
20 | |
21 #include "bconfig.h" | |
22 #include "system.h" | |
23 | |
24 struct rtx_definition | |
25 { | |
26 const char *const enumname, *const name, *const format; | |
27 }; | |
28 | |
29 /* rtl.def needs CONST_DOUBLE_FORMAT, but we don't care what | |
30 CONST_DOUBLE_FORMAT is because we're not going to be generating | |
31 anything for CONST_DOUBLE anyway. */ | |
32 #define CONST_DOUBLE_FORMAT "" | |
33 | |
34 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { #ENUM, NAME, FORMAT }, | |
35 | |
36 static const struct rtx_definition defs[] = | |
37 { | |
38 #include "rtl.def" /* rtl expressions are documented here */ | |
39 }; | |
111 | 40 #define NUM_RTX_CODE ARRAY_SIZE (defs) |
0 | 41 |
42 static const char *formats[NUM_RTX_CODE]; | |
43 | |
44 /* Decode a format letter into a C type string. */ | |
45 | |
46 static const char * | |
47 type_from_format (int c) | |
48 { | |
49 switch (c) | |
50 { | |
51 case 'i': | |
52 return "int "; | |
53 | |
54 case 'w': | |
55 return "HOST_WIDE_INT "; | |
56 | |
131 | 57 case 'p': |
58 return "poly_uint16 "; | |
59 | |
0 | 60 case 's': |
61 return "const char *"; | |
62 | |
63 case 'e': case 'u': | |
64 return "rtx "; | |
65 | |
66 case 'E': | |
67 return "rtvec "; | |
68 case 't': | |
111 | 69 return "tree "; |
0 | 70 case 'B': |
111 | 71 return "basic_block "; |
0 | 72 default: |
73 gcc_unreachable (); | |
74 } | |
75 } | |
76 | |
77 /* Decode a format letter into the proper accessor function. */ | |
78 | |
79 static const char * | |
80 accessor_from_format (int c) | |
81 { | |
82 switch (c) | |
83 { | |
84 case 'i': | |
85 return "XINT"; | |
86 | |
87 case 'w': | |
88 return "XWINT"; | |
89 | |
90 case 's': | |
91 return "XSTR"; | |
92 | |
93 case 'e': case 'u': | |
94 return "XEXP"; | |
95 | |
96 case 'E': | |
97 return "XVEC"; | |
98 | |
99 case 't': | |
100 return "XTREE"; | |
101 | |
102 case 'B': | |
103 return "XBBDEF"; | |
104 | |
105 default: | |
106 gcc_unreachable (); | |
107 } | |
108 } | |
109 | |
110 /* Return nonzero if we should ignore FMT, an RTL format, when making | |
111 the list of formats we write routines to create. */ | |
112 | |
113 static int | |
114 special_format (const char *fmt) | |
115 { | |
116 return (strchr (fmt, '*') != 0 | |
117 || strchr (fmt, 'V') != 0 | |
118 || strchr (fmt, 'S') != 0 | |
111 | 119 || strchr (fmt, 'n') != 0 |
120 || strchr (fmt, 'r') != 0); | |
121 } | |
122 | |
123 /* Return true if CODE always has VOIDmode. */ | |
124 | |
125 static inline bool | |
126 always_void_p (int idx) | |
127 { | |
128 return strcmp (defs[idx].enumname, "SET") == 0; | |
0 | 129 } |
130 | |
131 /* Return nonzero if the RTL code given by index IDX is one that we should | |
132 generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
133 is a wrapper in emit-rtl.c). */ | |
134 | |
135 static int | |
136 special_rtx (int idx) | |
137 { | |
111 | 138 return (strcmp (defs[idx].enumname, "EXPR_LIST") == 0 |
139 || strcmp (defs[idx].enumname, "INSN_LIST") == 0 | |
140 || strcmp (defs[idx].enumname, "INSN") == 0 | |
141 || strcmp (defs[idx].enumname, "CONST_INT") == 0 | |
0 | 142 || strcmp (defs[idx].enumname, "REG") == 0 |
143 || strcmp (defs[idx].enumname, "SUBREG") == 0 | |
144 || strcmp (defs[idx].enumname, "MEM") == 0 | |
111 | 145 || strcmp (defs[idx].enumname, "PC") == 0 |
146 || strcmp (defs[idx].enumname, "CC0") == 0 | |
147 || strcmp (defs[idx].enumname, "RETURN") == 0 | |
148 || strcmp (defs[idx].enumname, "SIMPLE_RETURN") == 0 | |
0 | 149 || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); |
150 } | |
151 | |
152 /* Return nonzero if the RTL code given by index IDX is one that we should | |
153 generate no macro for at all (because gen_rtx_FOO is never used or | |
154 cannot have the obvious interface). */ | |
155 | |
156 static int | |
157 excluded_rtx (int idx) | |
158 { | |
111 | 159 return (strcmp (defs[idx].enumname, "VAR_LOCATION") == 0 |
160 || strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0 | |
161 || strcmp (defs[idx].enumname, "CONST_WIDE_INT") == 0 | |
131 | 162 || strcmp (defs[idx].enumname, "CONST_POLY_INT") == 0 |
111 | 163 || strcmp (defs[idx].enumname, "CONST_FIXED") == 0); |
0 | 164 } |
165 | |
166 /* Place a list of all format specifiers we use into the array FORMAT. */ | |
167 | |
168 static void | |
169 find_formats (void) | |
170 { | |
171 unsigned int i; | |
172 | |
173 for (i = 0; i < NUM_RTX_CODE; i++) | |
174 { | |
175 const char **f; | |
176 | |
177 if (special_format (defs[i].format)) | |
178 continue; | |
179 | |
180 for (f = formats; *f; f++) | |
181 if (! strcmp (*f, defs[i].format)) | |
182 break; | |
183 | |
184 if (*f == 0) | |
185 *f = defs[i].format; | |
186 } | |
187 } | |
188 | |
189 | |
190 /* Generate macros to generate RTL of code IDX using the functions we | |
191 write. */ | |
192 | |
193 static void | |
194 genmacro (int idx) | |
195 { | |
196 const char *p; | |
111 | 197 const char *sep = ""; |
0 | 198 int i; |
199 | |
200 /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to | |
201 gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
202 | |
203 if (excluded_rtx (idx)) | |
204 /* Don't define a macro for this code. */ | |
205 return; | |
206 | |
111 | 207 bool has_mode_p = !always_void_p (idx); |
208 printf ("#define gen_rtx_%s%s(", | |
0 | 209 special_rtx (idx) ? "raw_" : "", defs[idx].enumname); |
111 | 210 if (has_mode_p) |
211 { | |
212 printf ("MODE"); | |
213 sep = ", "; | |
214 } | |
0 | 215 |
216 for (p = defs[idx].format, i = 0; *p != 0; p++) | |
217 if (*p != '0') | |
111 | 218 { |
219 printf ("%sARG%d", sep, i++); | |
220 sep = ", "; | |
221 } | |
0 | 222 |
111 | 223 printf (") \\\n gen_rtx_fmt_%s (%s, %s", |
224 defs[idx].format, defs[idx].enumname, | |
225 has_mode_p ? "(MODE)" : "VOIDmode"); | |
0 | 226 |
227 for (p = defs[idx].format, i = 0; *p != 0; p++) | |
228 if (*p != '0') | |
229 printf (", (ARG%d)", i++); | |
230 | |
231 puts (")"); | |
232 } | |
233 | |
145 | 234 /* Generate the code for functions to generate RTL whose format is FORMAT. */ |
0 | 235 |
236 static void | |
237 gendef (const char *format) | |
238 { | |
239 const char *p; | |
240 int i, j; | |
241 | |
145 | 242 /* Write the definition of the init function name and the types |
0 | 243 of the arguments. */ |
244 | |
145 | 245 puts ("static inline rtx"); |
246 printf ("init_rtx_fmt_%s (rtx rt, machine_mode mode", format); | |
0 | 247 for (p = format, i = 0; *p != 0; p++) |
248 if (*p != '0') | |
249 printf (",\n\t%sarg%d", type_from_format (*p), i++); | |
145 | 250 puts (")"); |
0 | 251 |
145 | 252 /* Now write out the body of the init function itself. */ |
0 | 253 puts ("{"); |
111 | 254 puts (" PUT_MODE_RAW (rt, mode);"); |
0 | 255 |
256 for (p = format, i = j = 0; *p ; ++p, ++i) | |
131 | 257 if (*p == '0') |
258 printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
259 else if (*p == 'p') | |
260 printf (" SUBREG_BYTE (rt) = arg%d;\n", j++); | |
261 else | |
0 | 262 printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); |
263 | |
145 | 264 puts (" return rt;\n}\n"); |
265 | |
266 /* Write the definition of the gen function name and the types | |
267 of the arguments. */ | |
268 | |
269 puts ("static inline rtx"); | |
270 printf ("gen_rtx_fmt_%s_stat (RTX_CODE code, machine_mode mode", format); | |
271 for (p = format, i = 0; *p != 0; p++) | |
272 if (*p != '0') | |
273 printf (",\n\t%sarg%d", type_from_format (*p), i++); | |
274 puts (" MEM_STAT_DECL)"); | |
275 | |
276 /* Now write out the body of the function itself, which allocates | |
277 the memory and initializes it. */ | |
278 puts ("{"); | |
279 puts (" rtx rt;\n"); | |
280 | |
281 puts (" rt = rtx_alloc (code PASS_MEM_STAT);"); | |
282 printf (" return init_rtx_fmt_%s (rt, mode", format); | |
283 for (p = format, i = 0; *p != 0; p++) | |
284 if (*p != '0') | |
285 printf (", arg%d", i++); | |
286 puts (");\n}\n"); | |
287 | |
288 /* Write the definition of gen macro. */ | |
289 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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290 printf ("#define gen_rtx_fmt_%s(c, m", format); |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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291 for (p = format, i = 0; *p != 0; p++) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
292 if (*p != '0') |
145 | 293 printf (", arg%d", i++); |
294 printf (") \\\n gen_rtx_fmt_%s_stat ((c), (m)", format); | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
295 for (p = format, i = 0; *p != 0; p++) |
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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296 if (*p != '0') |
145 | 297 printf (", (arg%d)", i++); |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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298 printf (" MEM_STAT_INFO)\n\n"); |
145 | 299 |
300 /* Write the definition of alloca macro. */ | |
301 | |
302 printf ("#define alloca_rtx_fmt_%s(c, m", format); | |
303 for (p = format, i = 0; *p != 0; p++) | |
304 if (*p != '0') | |
305 printf (", arg%d", i++); | |
306 printf (") \\\n init_rtx_fmt_%s (rtx_alloca ((c)), (m)", format); | |
307 for (p = format, i = 0; *p != 0; p++) | |
308 if (*p != '0') | |
309 printf (", (arg%d)", i++); | |
310 printf (")\n\n"); | |
0 | 311 } |
312 | |
313 /* Generate the documentation header for files we write. */ | |
314 | |
315 static void | |
316 genlegend (void) | |
317 { | |
318 puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); | |
319 } | |
320 | |
321 /* Generate the text of the header file we make, genrtl.h. */ | |
322 | |
323 static void | |
324 genheader (void) | |
325 { | |
326 unsigned int i; | |
327 const char **fmt; | |
328 | |
329 puts ("#ifndef GCC_GENRTL_H"); | |
330 puts ("#define GCC_GENRTL_H\n"); | |
331 puts ("#include \"statistics.h\"\n"); | |
332 | |
333 for (fmt = formats; *fmt; ++fmt) | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
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334 gendef (*fmt); |
0 | 335 |
336 putchar ('\n'); | |
337 | |
338 for (i = 0; i < NUM_RTX_CODE; i++) | |
339 if (! special_format (defs[i].format)) | |
340 genmacro (i); | |
341 | |
342 puts ("\n#endif /* GCC_GENRTL_H */"); | |
343 } | |
344 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
345 /* This is the main program. */ |
0 | 346 |
347 int | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
348 main (void) |
0 | 349 { |
350 find_formats (); | |
351 genlegend (); | |
352 | |
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
353 genheader (); |
0 | 354 |
355 if (ferror (stdout) || fflush (stdout) || fclose (stdout)) | |
356 return FATAL_EXIT_CODE; | |
357 | |
358 return SUCCESS_EXIT_CODE; | |
359 } |