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3b80f6ca | 1 | /* Generate code to allocate RTL structures. |
23a5b65a | 2 | Copyright (C) 1997-2014 Free Software Foundation, Inc. |
3b80f6ca | 3 | |
1322177d | 4 | This file is part of GCC. |
3b80f6ca | 5 | |
1322177d LB |
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 | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 9 | version. |
3b80f6ca | 10 | |
1322177d LB |
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. | |
3b80f6ca RH |
15 | |
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
3b80f6ca RH |
19 | |
20 | ||
4977bab6 | 21 | #include "bconfig.h" |
b04cd507 | 22 | #include "system.h" |
aa0b4465 | 23 | |
8f9eb495 | 24 | struct rtx_definition |
3b80f6ca | 25 | { |
8b60264b | 26 | const char *const enumname, *const name, *const format; |
3b80f6ca RH |
27 | }; |
28 | ||
0974c7d7 ZW |
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 | ||
9a238586 | 34 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { #ENUM, NAME, FORMAT }, |
3b80f6ca | 35 | |
8f9eb495 AJ |
36 | static const struct rtx_definition defs[] = |
37 | { | |
3b80f6ca RH |
38 | #include "rtl.def" /* rtl expressions are documented here */ |
39 | }; | |
c3284718 | 40 | #define NUM_RTX_CODE ARRAY_SIZE (defs) |
3b80f6ca | 41 | |
0b5826ac | 42 | static const char *formats[NUM_RTX_CODE]; |
c5c76735 | 43 | \f |
0133b7d9 RH |
44 | /* Decode a format letter into a C type string. */ |
45 | ||
3b80f6ca | 46 | static const char * |
3d7aafde | 47 | type_from_format (int c) |
3b80f6ca RH |
48 | { |
49 | switch (c) | |
50 | { | |
51 | case 'i': | |
c5c76735 JL |
52 | return "int "; |
53 | ||
3b80f6ca | 54 | case 'w': |
c5c76735 JL |
55 | return "HOST_WIDE_INT "; |
56 | ||
3b80f6ca | 57 | case 's': |
3cce094d | 58 | return "const char *"; |
c5c76735 JL |
59 | |
60 | case 'e': case 'u': | |
61 | return "rtx "; | |
62 | ||
3b80f6ca | 63 | case 'E': |
c5c76735 | 64 | return "rtvec "; |
0dfa1860 | 65 | case 't': |
b8244d74 | 66 | return "tree "; |
c8ea9a0f | 67 | case 'B': |
b8244d74 | 68 | return "basic_block "; |
3b80f6ca | 69 | default: |
b2d59f6f | 70 | gcc_unreachable (); |
3b80f6ca RH |
71 | } |
72 | } | |
73 | ||
0133b7d9 RH |
74 | /* Decode a format letter into the proper accessor function. */ |
75 | ||
3b80f6ca | 76 | static const char * |
3d7aafde | 77 | accessor_from_format (int c) |
3b80f6ca RH |
78 | { |
79 | switch (c) | |
80 | { | |
81 | case 'i': | |
82 | return "XINT"; | |
c5c76735 | 83 | |
3b80f6ca RH |
84 | case 'w': |
85 | return "XWINT"; | |
c5c76735 | 86 | |
3b80f6ca RH |
87 | case 's': |
88 | return "XSTR"; | |
c5c76735 JL |
89 | |
90 | case 'e': case 'u': | |
3b80f6ca | 91 | return "XEXP"; |
c5c76735 | 92 | |
3b80f6ca RH |
93 | case 'E': |
94 | return "XVEC"; | |
c5c76735 | 95 | |
0dfa1860 MM |
96 | case 't': |
97 | return "XTREE"; | |
c5c76735 | 98 | |
c8ea9a0f JH |
99 | case 'B': |
100 | return "XBBDEF"; | |
10d1bb36 JH |
101 | |
102 | default: | |
b2d59f6f | 103 | gcc_unreachable (); |
3b80f6ca RH |
104 | } |
105 | } | |
106 | ||
c5c76735 JL |
107 | /* Return nonzero if we should ignore FMT, an RTL format, when making |
108 | the list of formats we write routines to create. */ | |
0133b7d9 | 109 | |
3b80f6ca | 110 | static int |
3d7aafde | 111 | special_format (const char *fmt) |
3b80f6ca RH |
112 | { |
113 | return (strchr (fmt, '*') != 0 | |
114 | || strchr (fmt, 'V') != 0 | |
115 | || strchr (fmt, 'S') != 0 | |
116 | || strchr (fmt, 'n') != 0); | |
117 | } | |
118 | ||
5692c7bc ZW |
119 | /* Return nonzero if the RTL code given by index IDX is one that we should |
120 | generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
121 | is a wrapper in emit-rtl.c). */ | |
0133b7d9 | 122 | |
3b80f6ca | 123 | static int |
3d7aafde | 124 | special_rtx (int idx) |
3b80f6ca | 125 | { |
a756c6be DM |
126 | return (strcmp (defs[idx].enumname, "INSN_LIST") == 0 |
127 | || strcmp (defs[idx].enumname, "CONST_INT") == 0 | |
41472af8 | 128 | || strcmp (defs[idx].enumname, "REG") == 0 |
ddef6bc7 | 129 | || strcmp (defs[idx].enumname, "SUBREG") == 0 |
a06e3c40 | 130 | || strcmp (defs[idx].enumname, "MEM") == 0 |
3810076b BS |
131 | || strcmp (defs[idx].enumname, "PC") == 0 |
132 | || strcmp (defs[idx].enumname, "CC0") == 0 | |
133 | || strcmp (defs[idx].enumname, "RETURN") == 0 | |
26898771 | 134 | || strcmp (defs[idx].enumname, "SIMPLE_RETURN") == 0 |
a06e3c40 | 135 | || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); |
3b80f6ca RH |
136 | } |
137 | ||
5692c7bc ZW |
138 | /* Return nonzero if the RTL code given by index IDX is one that we should |
139 | generate no macro for at all (because gen_rtx_FOO is never used or | |
140 | cannot have the obvious interface). */ | |
141 | ||
142 | static int | |
3d7aafde | 143 | excluded_rtx (int idx) |
5692c7bc | 144 | { |
fcc74520 RS |
145 | return (strcmp (defs[idx].enumname, "VAR_LOCATION") == 0 |
146 | || strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0 | |
147 | || strcmp (defs[idx].enumname, "CONST_WIDE_INT") == 0 | |
148 | || strcmp (defs[idx].enumname, "CONST_FIXED") == 0); | |
5692c7bc ZW |
149 | } |
150 | ||
dc297297 | 151 | /* Place a list of all format specifiers we use into the array FORMAT. */ |
0133b7d9 | 152 | |
3b80f6ca | 153 | static void |
3d7aafde | 154 | find_formats (void) |
3b80f6ca | 155 | { |
3ef996b0 | 156 | unsigned int i; |
3b80f6ca | 157 | |
3ef996b0 | 158 | for (i = 0; i < NUM_RTX_CODE; i++) |
3b80f6ca RH |
159 | { |
160 | const char **f; | |
161 | ||
162 | if (special_format (defs[i].format)) | |
163 | continue; | |
164 | ||
c5c76735 | 165 | for (f = formats; *f; f++) |
0133b7d9 | 166 | if (! strcmp (*f, defs[i].format)) |
3b80f6ca RH |
167 | break; |
168 | ||
c5c76735 | 169 | if (*f == 0) |
3b80f6ca RH |
170 | *f = defs[i].format; |
171 | } | |
172 | } | |
173 | ||
3b80f6ca | 174 | |
c5c76735 JL |
175 | /* Generate macros to generate RTL of code IDX using the functions we |
176 | write. */ | |
0133b7d9 | 177 | |
8f9eb495 | 178 | static void |
3d7aafde | 179 | genmacro (int idx) |
3b80f6ca RH |
180 | { |
181 | const char *p; | |
182 | int i; | |
183 | ||
c5c76735 JL |
184 | /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to |
185 | gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
3b80f6ca | 186 | |
5692c7bc ZW |
187 | if (excluded_rtx (idx)) |
188 | /* Don't define a macro for this code. */ | |
189 | return; | |
190 | ||
c5c76735 JL |
191 | printf ("#define gen_rtx_%s%s(MODE", |
192 | special_rtx (idx) ? "raw_" : "", defs[idx].enumname); | |
193 | ||
194 | for (p = defs[idx].format, i = 0; *p != 0; p++) | |
3b80f6ca | 195 | if (*p != '0') |
c5c76735 JL |
196 | printf (", ARG%d", i++); |
197 | ||
198 | printf (") \\\n gen_rtx_fmt_%s (%s, (MODE)", | |
199 | defs[idx].format, defs[idx].enumname); | |
3b80f6ca | 200 | |
c5c76735 | 201 | for (p = defs[idx].format, i = 0; *p != 0; p++) |
3b80f6ca | 202 | if (*p != '0') |
c5c76735 JL |
203 | printf (", (ARG%d)", i++); |
204 | ||
f8a83ee3 | 205 | puts (")"); |
3b80f6ca RH |
206 | } |
207 | ||
c5c76735 JL |
208 | /* Generate the code for the function to generate RTL whose |
209 | format is FORMAT. */ | |
0133b7d9 | 210 | |
3b80f6ca | 211 | static void |
3d7aafde | 212 | gendef (const char *format) |
3b80f6ca RH |
213 | { |
214 | const char *p; | |
215 | int i, j; | |
8f9eb495 | 216 | |
c5c76735 JL |
217 | /* Start by writing the definition of the function name and the types |
218 | of the arguments. */ | |
3b80f6ca | 219 | |
6ac9d3a3 | 220 | printf ("static inline rtx\ngen_rtx_fmt_%s_stat (RTX_CODE code, enum machine_mode mode", format); |
c5c76735 | 221 | for (p = format, i = 0; *p != 0; p++) |
3b80f6ca | 222 | if (*p != '0') |
6906ba40 | 223 | printf (",\n\t%sarg%d", type_from_format (*p), i++); |
3b80f6ca | 224 | |
9dbe7947 | 225 | puts (" MEM_STAT_DECL)"); |
c5c76735 JL |
226 | |
227 | /* Now write out the body of the function itself, which allocates | |
228 | the memory and initializes it. */ | |
f8a83ee3 ZW |
229 | puts ("{"); |
230 | puts (" rtx rt;"); | |
9dbe7947 | 231 | puts (" rt = rtx_alloc_stat (code PASS_MEM_STAT);\n"); |
f8a83ee3 | 232 | |
f8a83ee3 | 233 | puts (" PUT_MODE (rt, mode);"); |
3b80f6ca RH |
234 | |
235 | for (p = format, i = j = 0; *p ; ++p, ++i) | |
236 | if (*p != '0') | |
c5c76735 | 237 | printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); |
f8a83ee3 ZW |
238 | else |
239 | printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
3b80f6ca | 240 | |
f8a83ee3 | 241 | puts ("\n return rt;\n}\n"); |
6ac9d3a3 JH |
242 | printf ("#define gen_rtx_fmt_%s(c, m", format); |
243 | for (p = format, i = 0; *p != 0; p++) | |
244 | if (*p != '0') | |
245 | printf (", p%i",i++); | |
246 | printf (")\\\n gen_rtx_fmt_%s_stat (c, m", format); | |
247 | for (p = format, i = 0; *p != 0; p++) | |
248 | if (*p != '0') | |
249 | printf (", p%i",i++); | |
250 | printf (" MEM_STAT_INFO)\n\n"); | |
3b80f6ca RH |
251 | } |
252 | ||
c5c76735 | 253 | /* Generate the documentation header for files we write. */ |
0133b7d9 | 254 | |
3b80f6ca | 255 | static void |
3d7aafde | 256 | genlegend (void) |
3b80f6ca | 257 | { |
f8a83ee3 | 258 | puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); |
3b80f6ca RH |
259 | } |
260 | ||
c5c76735 | 261 | /* Generate the text of the header file we make, genrtl.h. */ |
0133b7d9 | 262 | |
3b80f6ca | 263 | static void |
3d7aafde | 264 | genheader (void) |
3b80f6ca | 265 | { |
3ef996b0 | 266 | unsigned int i; |
3b80f6ca | 267 | const char **fmt; |
0313e85b ZW |
268 | |
269 | puts ("#ifndef GCC_GENRTL_H"); | |
270 | puts ("#define GCC_GENRTL_H\n"); | |
9dbe7947 | 271 | puts ("#include \"statistics.h\"\n"); |
0313e85b | 272 | |
3b80f6ca | 273 | for (fmt = formats; *fmt; ++fmt) |
6ac9d3a3 | 274 | gendef (*fmt); |
3b80f6ca | 275 | |
f8a83ee3 | 276 | putchar ('\n'); |
3b80f6ca | 277 | |
3ef996b0 | 278 | for (i = 0; i < NUM_RTX_CODE; i++) |
c5c76735 JL |
279 | if (! special_format (defs[i].format)) |
280 | genmacro (i); | |
0313e85b ZW |
281 | |
282 | puts ("\n#endif /* GCC_GENRTL_H */"); | |
3b80f6ca RH |
283 | } |
284 | ||
6ac9d3a3 | 285 | /* This is the main program. */ |
c5c76735 | 286 | |
3b80f6ca | 287 | int |
6ac9d3a3 | 288 | main (void) |
3b80f6ca | 289 | { |
3b80f6ca | 290 | find_formats (); |
c5c76735 | 291 | genlegend (); |
3b80f6ca | 292 | |
6ac9d3a3 | 293 | genheader (); |
3b80f6ca | 294 | |
0313e85b ZW |
295 | if (ferror (stdout) || fflush (stdout) || fclose (stdout)) |
296 | return FATAL_EXIT_CODE; | |
297 | ||
298 | return SUCCESS_EXIT_CODE; | |
3b80f6ca | 299 | } |