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3b80f6ca | 1 | /* Generate code to allocate RTL structures. |
cbe34bb5 | 2 | Copyright (C) 1997-2017 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 | |
9fccb335 RS |
116 | || strchr (fmt, 'n') != 0 |
117 | || strchr (fmt, 'r') != 0); | |
3b80f6ca RH |
118 | } |
119 | ||
f7df4a84 RS |
120 | /* Return true if CODE always has VOIDmode. */ |
121 | ||
122 | static inline bool | |
123 | always_void_p (int idx) | |
124 | { | |
125 | return strcmp (defs[idx].enumname, "SET") == 0; | |
126 | } | |
127 | ||
5692c7bc ZW |
128 | /* Return nonzero if the RTL code given by index IDX is one that we should |
129 | generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
130 | is a wrapper in emit-rtl.c). */ | |
0133b7d9 | 131 | |
3b80f6ca | 132 | static int |
3d7aafde | 133 | special_rtx (int idx) |
3b80f6ca | 134 | { |
38e60c55 DM |
135 | return (strcmp (defs[idx].enumname, "EXPR_LIST") == 0 |
136 | || strcmp (defs[idx].enumname, "INSN_LIST") == 0 | |
d6e1e8b8 | 137 | || strcmp (defs[idx].enumname, "INSN") == 0 |
a756c6be | 138 | || strcmp (defs[idx].enumname, "CONST_INT") == 0 |
41472af8 | 139 | || strcmp (defs[idx].enumname, "REG") == 0 |
ddef6bc7 | 140 | || strcmp (defs[idx].enumname, "SUBREG") == 0 |
a06e3c40 | 141 | || strcmp (defs[idx].enumname, "MEM") == 0 |
3810076b BS |
142 | || strcmp (defs[idx].enumname, "PC") == 0 |
143 | || strcmp (defs[idx].enumname, "CC0") == 0 | |
144 | || strcmp (defs[idx].enumname, "RETURN") == 0 | |
26898771 | 145 | || strcmp (defs[idx].enumname, "SIMPLE_RETURN") == 0 |
a06e3c40 | 146 | || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); |
3b80f6ca RH |
147 | } |
148 | ||
5692c7bc ZW |
149 | /* Return nonzero if the RTL code given by index IDX is one that we should |
150 | generate no macro for at all (because gen_rtx_FOO is never used or | |
151 | cannot have the obvious interface). */ | |
152 | ||
153 | static int | |
3d7aafde | 154 | excluded_rtx (int idx) |
5692c7bc | 155 | { |
fcc74520 RS |
156 | return (strcmp (defs[idx].enumname, "VAR_LOCATION") == 0 |
157 | || strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0 | |
158 | || strcmp (defs[idx].enumname, "CONST_WIDE_INT") == 0 | |
159 | || strcmp (defs[idx].enumname, "CONST_FIXED") == 0); | |
5692c7bc ZW |
160 | } |
161 | ||
dc297297 | 162 | /* Place a list of all format specifiers we use into the array FORMAT. */ |
0133b7d9 | 163 | |
3b80f6ca | 164 | static void |
3d7aafde | 165 | find_formats (void) |
3b80f6ca | 166 | { |
3ef996b0 | 167 | unsigned int i; |
3b80f6ca | 168 | |
3ef996b0 | 169 | for (i = 0; i < NUM_RTX_CODE; i++) |
3b80f6ca RH |
170 | { |
171 | const char **f; | |
172 | ||
173 | if (special_format (defs[i].format)) | |
174 | continue; | |
175 | ||
c5c76735 | 176 | for (f = formats; *f; f++) |
0133b7d9 | 177 | if (! strcmp (*f, defs[i].format)) |
3b80f6ca RH |
178 | break; |
179 | ||
c5c76735 | 180 | if (*f == 0) |
3b80f6ca RH |
181 | *f = defs[i].format; |
182 | } | |
183 | } | |
184 | ||
3b80f6ca | 185 | |
c5c76735 JL |
186 | /* Generate macros to generate RTL of code IDX using the functions we |
187 | write. */ | |
0133b7d9 | 188 | |
8f9eb495 | 189 | static void |
3d7aafde | 190 | genmacro (int idx) |
3b80f6ca RH |
191 | { |
192 | const char *p; | |
f7df4a84 | 193 | const char *sep = ""; |
3b80f6ca RH |
194 | int i; |
195 | ||
c5c76735 JL |
196 | /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to |
197 | gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
3b80f6ca | 198 | |
5692c7bc ZW |
199 | if (excluded_rtx (idx)) |
200 | /* Don't define a macro for this code. */ | |
201 | return; | |
202 | ||
f7df4a84 RS |
203 | bool has_mode_p = !always_void_p (idx); |
204 | printf ("#define gen_rtx_%s%s(", | |
c5c76735 | 205 | special_rtx (idx) ? "raw_" : "", defs[idx].enumname); |
f7df4a84 RS |
206 | if (has_mode_p) |
207 | { | |
208 | printf ("MODE"); | |
209 | sep = ", "; | |
210 | } | |
c5c76735 JL |
211 | |
212 | for (p = defs[idx].format, i = 0; *p != 0; p++) | |
3b80f6ca | 213 | if (*p != '0') |
f7df4a84 RS |
214 | { |
215 | printf ("%sARG%d", sep, i++); | |
216 | sep = ", "; | |
217 | } | |
218 | ||
219 | printf (") \\\n gen_rtx_fmt_%s (%s, %s", | |
220 | defs[idx].format, defs[idx].enumname, | |
221 | has_mode_p ? "(MODE)" : "VOIDmode"); | |
3b80f6ca | 222 | |
c5c76735 | 223 | for (p = defs[idx].format, i = 0; *p != 0; p++) |
3b80f6ca | 224 | if (*p != '0') |
c5c76735 JL |
225 | printf (", (ARG%d)", i++); |
226 | ||
f8a83ee3 | 227 | puts (")"); |
3b80f6ca RH |
228 | } |
229 | ||
c5c76735 JL |
230 | /* Generate the code for the function to generate RTL whose |
231 | format is FORMAT. */ | |
0133b7d9 | 232 | |
3b80f6ca | 233 | static void |
3d7aafde | 234 | gendef (const char *format) |
3b80f6ca RH |
235 | { |
236 | const char *p; | |
237 | int i, j; | |
8f9eb495 | 238 | |
c5c76735 JL |
239 | /* Start by writing the definition of the function name and the types |
240 | of the arguments. */ | |
3b80f6ca | 241 | |
ef4bddc2 | 242 | printf ("static inline rtx\ngen_rtx_fmt_%s_stat (RTX_CODE code, machine_mode mode", format); |
c5c76735 | 243 | for (p = format, i = 0; *p != 0; p++) |
3b80f6ca | 244 | if (*p != '0') |
6906ba40 | 245 | printf (",\n\t%sarg%d", type_from_format (*p), i++); |
3b80f6ca | 246 | |
9dbe7947 | 247 | puts (" MEM_STAT_DECL)"); |
c5c76735 JL |
248 | |
249 | /* Now write out the body of the function itself, which allocates | |
250 | the memory and initializes it. */ | |
f8a83ee3 ZW |
251 | puts ("{"); |
252 | puts (" rtx rt;"); | |
84c2ad23 | 253 | puts (" rt = rtx_alloc (code PASS_MEM_STAT);\n"); |
f8a83ee3 | 254 | |
8deccbb7 | 255 | puts (" PUT_MODE_RAW (rt, mode);"); |
3b80f6ca RH |
256 | |
257 | for (p = format, i = j = 0; *p ; ++p, ++i) | |
258 | if (*p != '0') | |
c5c76735 | 259 | printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); |
f8a83ee3 ZW |
260 | else |
261 | printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
3b80f6ca | 262 | |
f8a83ee3 | 263 | puts ("\n return rt;\n}\n"); |
6ac9d3a3 JH |
264 | printf ("#define gen_rtx_fmt_%s(c, m", format); |
265 | for (p = format, i = 0; *p != 0; p++) | |
266 | if (*p != '0') | |
267 | printf (", p%i",i++); | |
268 | printf (")\\\n gen_rtx_fmt_%s_stat (c, m", format); | |
269 | for (p = format, i = 0; *p != 0; p++) | |
270 | if (*p != '0') | |
271 | printf (", p%i",i++); | |
272 | printf (" MEM_STAT_INFO)\n\n"); | |
3b80f6ca RH |
273 | } |
274 | ||
c5c76735 | 275 | /* Generate the documentation header for files we write. */ |
0133b7d9 | 276 | |
3b80f6ca | 277 | static void |
3d7aafde | 278 | genlegend (void) |
3b80f6ca | 279 | { |
f8a83ee3 | 280 | puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); |
3b80f6ca RH |
281 | } |
282 | ||
c5c76735 | 283 | /* Generate the text of the header file we make, genrtl.h. */ |
0133b7d9 | 284 | |
3b80f6ca | 285 | static void |
3d7aafde | 286 | genheader (void) |
3b80f6ca | 287 | { |
3ef996b0 | 288 | unsigned int i; |
3b80f6ca | 289 | const char **fmt; |
0313e85b ZW |
290 | |
291 | puts ("#ifndef GCC_GENRTL_H"); | |
292 | puts ("#define GCC_GENRTL_H\n"); | |
9dbe7947 | 293 | puts ("#include \"statistics.h\"\n"); |
0313e85b | 294 | |
3b80f6ca | 295 | for (fmt = formats; *fmt; ++fmt) |
6ac9d3a3 | 296 | gendef (*fmt); |
3b80f6ca | 297 | |
f8a83ee3 | 298 | putchar ('\n'); |
3b80f6ca | 299 | |
3ef996b0 | 300 | for (i = 0; i < NUM_RTX_CODE; i++) |
c5c76735 JL |
301 | if (! special_format (defs[i].format)) |
302 | genmacro (i); | |
0313e85b ZW |
303 | |
304 | puts ("\n#endif /* GCC_GENRTL_H */"); | |
3b80f6ca RH |
305 | } |
306 | ||
6ac9d3a3 | 307 | /* This is the main program. */ |
c5c76735 | 308 | |
3b80f6ca | 309 | int |
6ac9d3a3 | 310 | main (void) |
3b80f6ca | 311 | { |
3b80f6ca | 312 | find_formats (); |
c5c76735 | 313 | genlegend (); |
3b80f6ca | 314 | |
6ac9d3a3 | 315 | genheader (); |
3b80f6ca | 316 | |
0313e85b ZW |
317 | if (ferror (stdout) || fflush (stdout) || fclose (stdout)) |
318 | return FATAL_EXIT_CODE; | |
319 | ||
320 | return SUCCESS_EXIT_CODE; | |
3b80f6ca | 321 | } |