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3b80f6ca | 1 | /* Generate code to allocate RTL structures. |
8d9254fc | 2 | Copyright (C) 1997-2020 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 | ||
91914e56 RS |
57 | case 'p': |
58 | return "poly_uint16 "; | |
59 | ||
3b80f6ca | 60 | case 's': |
3cce094d | 61 | return "const char *"; |
c5c76735 JL |
62 | |
63 | case 'e': case 'u': | |
64 | return "rtx "; | |
65 | ||
3b80f6ca | 66 | case 'E': |
c5c76735 | 67 | return "rtvec "; |
0dfa1860 | 68 | case 't': |
b8244d74 | 69 | return "tree "; |
c8ea9a0f | 70 | case 'B': |
b8244d74 | 71 | return "basic_block "; |
3b80f6ca | 72 | default: |
b2d59f6f | 73 | gcc_unreachable (); |
3b80f6ca RH |
74 | } |
75 | } | |
76 | ||
0133b7d9 RH |
77 | /* Decode a format letter into the proper accessor function. */ |
78 | ||
3b80f6ca | 79 | static const char * |
3d7aafde | 80 | accessor_from_format (int c) |
3b80f6ca RH |
81 | { |
82 | switch (c) | |
83 | { | |
84 | case 'i': | |
85 | return "XINT"; | |
c5c76735 | 86 | |
3b80f6ca RH |
87 | case 'w': |
88 | return "XWINT"; | |
c5c76735 | 89 | |
3b80f6ca RH |
90 | case 's': |
91 | return "XSTR"; | |
c5c76735 JL |
92 | |
93 | case 'e': case 'u': | |
3b80f6ca | 94 | return "XEXP"; |
c5c76735 | 95 | |
3b80f6ca RH |
96 | case 'E': |
97 | return "XVEC"; | |
c5c76735 | 98 | |
0dfa1860 MM |
99 | case 't': |
100 | return "XTREE"; | |
c5c76735 | 101 | |
c8ea9a0f JH |
102 | case 'B': |
103 | return "XBBDEF"; | |
10d1bb36 JH |
104 | |
105 | default: | |
b2d59f6f | 106 | gcc_unreachable (); |
3b80f6ca RH |
107 | } |
108 | } | |
109 | ||
c5c76735 JL |
110 | /* Return nonzero if we should ignore FMT, an RTL format, when making |
111 | the list of formats we write routines to create. */ | |
0133b7d9 | 112 | |
3b80f6ca | 113 | static int |
3d7aafde | 114 | special_format (const char *fmt) |
3b80f6ca RH |
115 | { |
116 | return (strchr (fmt, '*') != 0 | |
117 | || strchr (fmt, 'V') != 0 | |
118 | || strchr (fmt, 'S') != 0 | |
9fccb335 RS |
119 | || strchr (fmt, 'n') != 0 |
120 | || strchr (fmt, 'r') != 0); | |
3b80f6ca RH |
121 | } |
122 | ||
f7df4a84 RS |
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; | |
129 | } | |
130 | ||
5692c7bc ZW |
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). */ | |
0133b7d9 | 134 | |
3b80f6ca | 135 | static int |
3d7aafde | 136 | special_rtx (int idx) |
3b80f6ca | 137 | { |
38e60c55 DM |
138 | return (strcmp (defs[idx].enumname, "EXPR_LIST") == 0 |
139 | || strcmp (defs[idx].enumname, "INSN_LIST") == 0 | |
d6e1e8b8 | 140 | || strcmp (defs[idx].enumname, "INSN") == 0 |
a756c6be | 141 | || strcmp (defs[idx].enumname, "CONST_INT") == 0 |
41472af8 | 142 | || strcmp (defs[idx].enumname, "REG") == 0 |
ddef6bc7 | 143 | || strcmp (defs[idx].enumname, "SUBREG") == 0 |
a06e3c40 | 144 | || strcmp (defs[idx].enumname, "MEM") == 0 |
3810076b BS |
145 | || strcmp (defs[idx].enumname, "PC") == 0 |
146 | || strcmp (defs[idx].enumname, "CC0") == 0 | |
147 | || strcmp (defs[idx].enumname, "RETURN") == 0 | |
26898771 | 148 | || strcmp (defs[idx].enumname, "SIMPLE_RETURN") == 0 |
a06e3c40 | 149 | || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); |
3b80f6ca RH |
150 | } |
151 | ||
5692c7bc ZW |
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 | |
3d7aafde | 157 | excluded_rtx (int idx) |
5692c7bc | 158 | { |
fcc74520 RS |
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 | |
0c12fc9b | 162 | || strcmp (defs[idx].enumname, "CONST_POLY_INT") == 0 |
fcc74520 | 163 | || strcmp (defs[idx].enumname, "CONST_FIXED") == 0); |
5692c7bc ZW |
164 | } |
165 | ||
dc297297 | 166 | /* Place a list of all format specifiers we use into the array FORMAT. */ |
0133b7d9 | 167 | |
3b80f6ca | 168 | static void |
3d7aafde | 169 | find_formats (void) |
3b80f6ca | 170 | { |
3ef996b0 | 171 | unsigned int i; |
3b80f6ca | 172 | |
3ef996b0 | 173 | for (i = 0; i < NUM_RTX_CODE; i++) |
3b80f6ca RH |
174 | { |
175 | const char **f; | |
176 | ||
177 | if (special_format (defs[i].format)) | |
178 | continue; | |
179 | ||
c5c76735 | 180 | for (f = formats; *f; f++) |
0133b7d9 | 181 | if (! strcmp (*f, defs[i].format)) |
3b80f6ca RH |
182 | break; |
183 | ||
c5c76735 | 184 | if (*f == 0) |
3b80f6ca RH |
185 | *f = defs[i].format; |
186 | } | |
187 | } | |
188 | ||
3b80f6ca | 189 | |
c5c76735 JL |
190 | /* Generate macros to generate RTL of code IDX using the functions we |
191 | write. */ | |
0133b7d9 | 192 | |
8f9eb495 | 193 | static void |
3d7aafde | 194 | genmacro (int idx) |
3b80f6ca RH |
195 | { |
196 | const char *p; | |
f7df4a84 | 197 | const char *sep = ""; |
3b80f6ca RH |
198 | int i; |
199 | ||
c5c76735 JL |
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. */ | |
3b80f6ca | 202 | |
5692c7bc ZW |
203 | if (excluded_rtx (idx)) |
204 | /* Don't define a macro for this code. */ | |
205 | return; | |
206 | ||
f7df4a84 RS |
207 | bool has_mode_p = !always_void_p (idx); |
208 | printf ("#define gen_rtx_%s%s(", | |
c5c76735 | 209 | special_rtx (idx) ? "raw_" : "", defs[idx].enumname); |
f7df4a84 RS |
210 | if (has_mode_p) |
211 | { | |
212 | printf ("MODE"); | |
213 | sep = ", "; | |
214 | } | |
c5c76735 JL |
215 | |
216 | for (p = defs[idx].format, i = 0; *p != 0; p++) | |
3b80f6ca | 217 | if (*p != '0') |
f7df4a84 RS |
218 | { |
219 | printf ("%sARG%d", sep, i++); | |
220 | sep = ", "; | |
221 | } | |
222 | ||
223 | printf (") \\\n gen_rtx_fmt_%s (%s, %s", | |
224 | defs[idx].format, defs[idx].enumname, | |
225 | has_mode_p ? "(MODE)" : "VOIDmode"); | |
3b80f6ca | 226 | |
c5c76735 | 227 | for (p = defs[idx].format, i = 0; *p != 0; p++) |
3b80f6ca | 228 | if (*p != '0') |
c5c76735 JL |
229 | printf (", (ARG%d)", i++); |
230 | ||
f8a83ee3 | 231 | puts (")"); |
3b80f6ca RH |
232 | } |
233 | ||
20fa157e | 234 | /* Generate the code for functions to generate RTL whose format is FORMAT. */ |
0133b7d9 | 235 | |
3b80f6ca | 236 | static void |
3d7aafde | 237 | gendef (const char *format) |
3b80f6ca RH |
238 | { |
239 | const char *p; | |
240 | int i, j; | |
8f9eb495 | 241 | |
20fa157e | 242 | /* Write the definition of the init function name and the types |
c5c76735 | 243 | of the arguments. */ |
3b80f6ca | 244 | |
20fa157e IL |
245 | puts ("static inline rtx"); |
246 | printf ("init_rtx_fmt_%s (rtx rt, machine_mode mode", format); | |
c5c76735 | 247 | for (p = format, i = 0; *p != 0; p++) |
3b80f6ca | 248 | if (*p != '0') |
6906ba40 | 249 | printf (",\n\t%sarg%d", type_from_format (*p), i++); |
20fa157e | 250 | puts (")"); |
3b80f6ca | 251 | |
20fa157e | 252 | /* Now write out the body of the init function itself. */ |
f8a83ee3 | 253 | puts ("{"); |
8deccbb7 | 254 | puts (" PUT_MODE_RAW (rt, mode);"); |
3b80f6ca RH |
255 | |
256 | for (p = format, i = j = 0; *p ; ++p, ++i) | |
91914e56 | 257 | if (*p == '0') |
f8a83ee3 | 258 | printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); |
91914e56 RS |
259 | else if (*p == 'p') |
260 | printf (" SUBREG_BYTE (rt) = arg%d;\n", j++); | |
261 | else | |
262 | printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); | |
3b80f6ca | 263 | |
20fa157e IL |
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 | ||
6ac9d3a3 JH |
290 | printf ("#define gen_rtx_fmt_%s(c, m", format); |
291 | for (p = format, i = 0; *p != 0; p++) | |
292 | if (*p != '0') | |
20fa157e IL |
293 | printf (", arg%d", i++); |
294 | printf (") \\\n gen_rtx_fmt_%s_stat ((c), (m)", format); | |
6ac9d3a3 JH |
295 | for (p = format, i = 0; *p != 0; p++) |
296 | if (*p != '0') | |
20fa157e | 297 | printf (", (arg%d)", i++); |
6ac9d3a3 | 298 | printf (" MEM_STAT_INFO)\n\n"); |
20fa157e IL |
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"); | |
3b80f6ca RH |
311 | } |
312 | ||
c5c76735 | 313 | /* Generate the documentation header for files we write. */ |
0133b7d9 | 314 | |
3b80f6ca | 315 | static void |
3d7aafde | 316 | genlegend (void) |
3b80f6ca | 317 | { |
f8a83ee3 | 318 | puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); |
3b80f6ca RH |
319 | } |
320 | ||
c5c76735 | 321 | /* Generate the text of the header file we make, genrtl.h. */ |
0133b7d9 | 322 | |
3b80f6ca | 323 | static void |
3d7aafde | 324 | genheader (void) |
3b80f6ca | 325 | { |
3ef996b0 | 326 | unsigned int i; |
3b80f6ca | 327 | const char **fmt; |
0313e85b ZW |
328 | |
329 | puts ("#ifndef GCC_GENRTL_H"); | |
330 | puts ("#define GCC_GENRTL_H\n"); | |
9dbe7947 | 331 | puts ("#include \"statistics.h\"\n"); |
0313e85b | 332 | |
3b80f6ca | 333 | for (fmt = formats; *fmt; ++fmt) |
6ac9d3a3 | 334 | gendef (*fmt); |
3b80f6ca | 335 | |
f8a83ee3 | 336 | putchar ('\n'); |
3b80f6ca | 337 | |
3ef996b0 | 338 | for (i = 0; i < NUM_RTX_CODE; i++) |
c5c76735 JL |
339 | if (! special_format (defs[i].format)) |
340 | genmacro (i); | |
0313e85b ZW |
341 | |
342 | puts ("\n#endif /* GCC_GENRTL_H */"); | |
3b80f6ca RH |
343 | } |
344 | ||
6ac9d3a3 | 345 | /* This is the main program. */ |
c5c76735 | 346 | |
3b80f6ca | 347 | int |
6ac9d3a3 | 348 | main (void) |
3b80f6ca | 349 | { |
3b80f6ca | 350 | find_formats (); |
c5c76735 | 351 | genlegend (); |
3b80f6ca | 352 | |
6ac9d3a3 | 353 | genheader (); |
3b80f6ca | 354 | |
0313e85b ZW |
355 | if (ferror (stdout) || fflush (stdout) || fclose (stdout)) |
356 | return FATAL_EXIT_CODE; | |
357 | ||
358 | return SUCCESS_EXIT_CODE; | |
3b80f6ca | 359 | } |