Mercurial > hg > CbC > CbC_gcc
annotate gcc/genoutput.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Generate code from to output assembler insns as recognized from rtl. |
| 145 | 2 Copyright (C) 1987-2020 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 /* This program reads the machine description for the compiler target machine | |
| 22 and produces a file containing these things: | |
| 23 | |
|
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
|
24 1. An array of `struct insn_data_d', which is indexed by insn code number, |
| 0 | 25 which contains: |
| 26 | |
| 27 a. `name' is the name for that pattern. Nameless patterns are | |
| 28 given a name. | |
| 29 | |
| 30 b. `output' hold either the output template, an array of output | |
| 31 templates, or an output function. | |
| 32 | |
| 33 c. `genfun' is the function to generate a body for that pattern, | |
| 34 given operands as arguments. | |
| 35 | |
| 36 d. `n_operands' is the number of distinct operands in the pattern | |
| 37 for that insn, | |
| 38 | |
| 39 e. `n_dups' is the number of match_dup's that appear in the insn's | |
| 40 pattern. This says how many elements of `recog_data.dup_loc' are | |
| 41 significant after an insn has been recognized. | |
| 42 | |
| 43 f. `n_alternatives' is the number of alternatives in the constraints | |
| 44 of each pattern. | |
| 45 | |
| 46 g. `output_format' tells what type of thing `output' is. | |
| 47 | |
| 48 h. `operand' is the base of an array of operand data for the insn. | |
| 49 | |
| 50 2. An array of `struct insn_operand data', used by `operand' above. | |
| 51 | |
| 52 a. `predicate', an int-valued function, is the match_operand predicate | |
| 53 for this operand. | |
| 54 | |
| 55 b. `constraint' is the constraint for this operand. | |
| 56 | |
| 57 c. `address_p' indicates that the operand appears within ADDRESS | |
| 58 rtx's. | |
| 59 | |
| 60 d. `mode' is the machine mode that that operand is supposed to have. | |
| 61 | |
| 62 e. `strict_low', is nonzero for operands contained in a STRICT_LOW_PART. | |
| 63 | |
| 64 f. `eliminable', is nonzero for operands that are matched normally by | |
| 65 MATCH_OPERAND; it is zero for operands that should not be changed during | |
| 66 register elimination such as MATCH_OPERATORs. | |
| 67 | |
| 111 | 68 g. `allows_mem', is true for operands that accept MEM rtxes. |
| 69 | |
| 0 | 70 The code number of an insn is simply its position in the machine |
| 71 description; code numbers are assigned sequentially to entries in | |
| 72 the description, starting with code number 0. | |
| 73 | |
| 74 Thus, the following entry in the machine description | |
| 75 | |
| 76 (define_insn "clrdf" | |
| 77 [(set (match_operand:DF 0 "general_operand" "") | |
| 78 (const_int 0))] | |
| 79 "" | |
| 80 "clrd %0") | |
| 81 | |
| 82 assuming it is the 25th entry present, would cause | |
| 83 insn_data[24].template to be "clrd %0", and | |
| 84 insn_data[24].n_operands to be 1. */ | |
| 85 | |
| 86 #include "bconfig.h" | |
| 87 #include "system.h" | |
| 88 #include "coretypes.h" | |
| 89 #include "tm.h" | |
| 90 #include "rtl.h" | |
| 91 #include "errors.h" | |
|
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
|
92 #include "read-md.h" |
| 0 | 93 #include "gensupport.h" |
| 94 | |
| 95 /* No instruction can have more operands than this. Sorry for this | |
| 96 arbitrary limit, but what machine will have an instruction with | |
| 97 this many operands? */ | |
| 98 | |
| 99 #define MAX_MAX_OPERANDS 40 | |
| 100 | |
| 111 | 101 static char general_mem[] = { TARGET_MEM_CONSTRAINT, 0 }; |
| 102 | |
| 0 | 103 static int n_occurrences (int, const char *); |
| 104 static const char *strip_whitespace (const char *); | |
| 105 | |
| 106 /* This counts all operands used in the md file. The first is null. */ | |
| 107 | |
| 108 static int next_operand_number = 1; | |
| 109 | |
| 110 /* Record in this chain all information about the operands we will output. */ | |
| 111 | |
| 112 struct operand_data | |
| 113 { | |
| 114 struct operand_data *next; | |
| 115 int index; | |
| 116 const char *predicate; | |
| 117 const char *constraint; | |
| 111 | 118 machine_mode mode; |
| 0 | 119 unsigned char n_alternatives; |
| 120 char address_p; | |
| 121 char strict_low; | |
| 122 char eliminable; | |
| 123 char seen; | |
| 124 }; | |
| 125 | |
| 126 /* Begin with a null operand at index 0. */ | |
| 127 | |
| 128 static struct operand_data null_operand = | |
| 129 { | |
| 111 | 130 0, 0, "", "", E_VOIDmode, 0, 0, 0, 0, 0 |
| 0 | 131 }; |
| 132 | |
| 133 static struct operand_data *odata = &null_operand; | |
| 134 static struct operand_data **odata_end = &null_operand.next; | |
| 135 | |
| 136 /* Must match the constants in recog.h. */ | |
| 137 | |
| 138 #define INSN_OUTPUT_FORMAT_NONE 0 /* abort */ | |
| 139 #define INSN_OUTPUT_FORMAT_SINGLE 1 /* const char * */ | |
| 140 #define INSN_OUTPUT_FORMAT_MULTI 2 /* const char * const * */ | |
| 141 #define INSN_OUTPUT_FORMAT_FUNCTION 3 /* const char * (*)(...) */ | |
| 142 | |
| 143 /* Record in this chain all information that we will output, | |
| 144 associated with the code number of the insn. */ | |
| 145 | |
| 145 | 146 class data |
| 0 | 147 { |
| 145 | 148 public: |
| 149 class data *next; | |
| 0 | 150 const char *name; |
| 151 const char *template_code; | |
| 111 | 152 file_location loc; |
| 0 | 153 int code_number; |
| 111 | 154 int n_generator_args; /* Number of arguments passed to generator */ |
| 0 | 155 int n_operands; /* Number of operands this insn recognizes */ |
| 156 int n_dups; /* Number times match_dup appears in pattern */ | |
| 157 int n_alternatives; /* Number of alternatives in each constraint */ | |
| 158 int operand_number; /* Operand index in the big array. */ | |
| 159 int output_format; /* INSN_OUTPUT_FORMAT_*. */ | |
| 160 struct operand_data operand[MAX_MAX_OPERANDS]; | |
| 161 }; | |
| 162 | |
| 163 /* This variable points to the first link in the insn chain. */ | |
| 145 | 164 static class data *idata; |
| 0 | 165 |
| 111 | 166 /* This variable points to the end of the insn chain. This is where |
| 167 everything relevant from the machien description is appended to. */ | |
| 145 | 168 static class data **idata_end; |
| 111 | 169 |
| 0 | 170 |
| 171 static void output_prologue (void); | |
| 172 static void output_operand_data (void); | |
| 173 static void output_insn_data (void); | |
| 174 static void output_get_insn_name (void); | |
| 145 | 175 static void scan_operands (class data *, rtx, int, int); |
| 0 | 176 static int compare_operands (struct operand_data *, |
| 177 struct operand_data *); | |
| 145 | 178 static void place_operands (class data *); |
| 179 static void process_template (class data *, const char *); | |
| 180 static void validate_insn_alternatives (class data *); | |
| 181 static void validate_insn_operands (class data *); | |
| 0 | 182 |
| 145 | 183 class constraint_data |
| 0 | 184 { |
| 145 | 185 public: |
| 186 class constraint_data *next_this_letter; | |
| 111 | 187 file_location loc; |
| 0 | 188 unsigned int namelen; |
| 111 | 189 char name[1]; |
| 0 | 190 }; |
| 191 | |
| 111 | 192 /* All machine-independent constraint characters (except digits) that |
| 193 are handled outside the define*_constraint mechanism. */ | |
| 194 static const char indep_constraints[] = ",=+%*?!^$#&g"; | |
| 0 | 195 |
| 145 | 196 static class constraint_data * |
| 0 | 197 constraints_by_letter_table[1 << CHAR_BIT]; |
| 198 | |
| 111 | 199 static int mdep_constraint_len (const char *, file_location, int); |
| 200 static void note_constraint (md_rtx_info *); | |
| 0 | 201 |
| 202 static void | |
| 203 output_prologue (void) | |
| 204 { | |
| 205 printf ("/* Generated automatically by the program `genoutput'\n\ | |
| 206 from the machine description file `md'. */\n\n"); | |
| 207 | |
| 131 | 208 printf ("#define IN_TARGET_CODE 1\n"); |
| 0 | 209 printf ("#include \"config.h\"\n"); |
| 210 printf ("#include \"system.h\"\n"); | |
| 211 printf ("#include \"coretypes.h\"\n"); | |
| 111 | 212 printf ("#include \"backend.h\"\n"); |
| 213 printf ("#include \"predict.h\"\n"); | |
| 214 printf ("#include \"tree.h\"\n"); | |
| 215 printf ("#include \"rtl.h\"\n"); | |
| 0 | 216 printf ("#include \"flags.h\"\n"); |
| 111 | 217 printf ("#include \"alias.h\"\n"); |
| 218 printf ("#include \"varasm.h\"\n"); | |
| 219 printf ("#include \"stor-layout.h\"\n"); | |
| 220 printf ("#include \"calls.h\"\n"); | |
| 221 printf ("#include \"insn-config.h\"\n"); | |
| 222 printf ("#include \"expmed.h\"\n"); | |
| 223 printf ("#include \"dojump.h\"\n"); | |
| 224 printf ("#include \"explow.h\"\n"); | |
| 225 printf ("#include \"memmodel.h\"\n"); | |
| 226 printf ("#include \"emit-rtl.h\"\n"); | |
| 227 printf ("#include \"stmt.h\"\n"); | |
| 0 | 228 printf ("#include \"expr.h\"\n"); |
| 229 printf ("#include \"insn-codes.h\"\n"); | |
| 230 printf ("#include \"tm_p.h\"\n"); | |
| 231 printf ("#include \"regs.h\"\n"); | |
| 232 printf ("#include \"conditions.h\"\n"); | |
| 233 printf ("#include \"insn-attr.h\"\n\n"); | |
| 234 printf ("#include \"recog.h\"\n\n"); | |
|
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
|
235 printf ("#include \"diagnostic-core.h\"\n"); |
| 0 | 236 printf ("#include \"output.h\"\n"); |
| 237 printf ("#include \"target.h\"\n"); | |
| 238 printf ("#include \"tm-constrs.h\"\n"); | |
| 239 } | |
| 240 | |
| 241 static void | |
| 242 output_operand_data (void) | |
| 243 { | |
| 244 struct operand_data *d; | |
| 245 | |
| 246 printf ("\nstatic const struct insn_operand_data operand_data[] = \n{\n"); | |
| 247 | |
| 248 for (d = odata; d; d = d->next) | |
| 249 { | |
| 111 | 250 struct pred_data *pred; |
| 251 | |
| 0 | 252 printf (" {\n"); |
| 253 | |
| 254 printf (" %s,\n", | |
| 255 d->predicate && d->predicate[0] ? d->predicate : "0"); | |
| 256 | |
| 257 printf (" \"%s\",\n", d->constraint ? d->constraint : ""); | |
| 258 | |
| 111 | 259 printf (" E_%smode,\n", GET_MODE_NAME (d->mode)); |
| 0 | 260 |
| 261 printf (" %d,\n", d->strict_low); | |
| 262 | |
|
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
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263 printf (" %d,\n", d->constraint == NULL ? 1 : 0); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
264 |
| 111 | 265 printf (" %d,\n", d->eliminable); |
| 0 | 266 |
| 111 | 267 pred = NULL; |
| 268 if (d->predicate) | |
| 269 pred = lookup_predicate (d->predicate); | |
| 270 printf (" %d\n", pred && pred->codes[MEM]); | |
| 271 | |
| 272 printf (" },\n"); | |
| 0 | 273 } |
| 111 | 274 printf ("};\n\n\n"); |
| 0 | 275 } |
| 276 | |
| 277 static void | |
| 278 output_insn_data (void) | |
| 279 { | |
| 145 | 280 class data *d; |
| 0 | 281 int name_offset = 0; |
| 282 int next_name_offset; | |
| 283 const char * last_name = 0; | |
| 284 const char * next_name = 0; | |
| 145 | 285 class data *n; |
| 0 | 286 |
| 287 for (n = idata, next_name_offset = 1; n; n = n->next, next_name_offset++) | |
| 288 if (n->name) | |
| 289 { | |
| 290 next_name = n->name; | |
| 291 break; | |
| 292 } | |
| 293 | |
| 294 printf ("#if GCC_VERSION >= 2007\n__extension__\n#endif\n"); | |
|
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 printf ("\nconst struct insn_data_d insn_data[] = \n{\n"); |
| 0 | 296 |
| 297 for (d = idata; d; d = d->next) | |
| 298 { | |
| 111 | 299 printf (" /* %s:%d */\n", d->loc.filename, d->loc.lineno); |
| 0 | 300 printf (" {\n"); |
| 301 | |
| 302 if (d->name) | |
| 303 { | |
| 304 printf (" \"%s\",\n", d->name); | |
| 305 name_offset = 0; | |
| 306 last_name = d->name; | |
| 307 next_name = 0; | |
| 308 for (n = d->next, next_name_offset = 1; n; | |
| 309 n = n->next, next_name_offset++) | |
| 310 { | |
| 311 if (n->name) | |
| 312 { | |
| 313 next_name = n->name; | |
| 314 break; | |
| 315 } | |
| 316 } | |
| 317 } | |
| 318 else | |
| 319 { | |
| 320 name_offset++; | |
| 321 if (next_name && (last_name == 0 | |
| 322 || name_offset > next_name_offset / 2)) | |
| 323 printf (" \"%s-%d\",\n", next_name, | |
| 324 next_name_offset - name_offset); | |
| 325 else | |
| 326 printf (" \"%s+%d\",\n", last_name, name_offset); | |
| 327 } | |
| 328 | |
| 329 switch (d->output_format) | |
| 330 { | |
| 331 case INSN_OUTPUT_FORMAT_NONE: | |
| 111 | 332 printf ("#if HAVE_DESIGNATED_UNION_INITIALIZERS\n"); |
| 0 | 333 printf (" { 0 },\n"); |
| 334 printf ("#else\n"); | |
| 335 printf (" { 0, 0, 0 },\n"); | |
| 336 printf ("#endif\n"); | |
| 337 break; | |
| 338 case INSN_OUTPUT_FORMAT_SINGLE: | |
| 339 { | |
| 340 const char *p = d->template_code; | |
| 341 char prev = 0; | |
| 342 | |
| 111 | 343 printf ("#if HAVE_DESIGNATED_UNION_INITIALIZERS\n"); |
| 0 | 344 printf (" { .single =\n"); |
| 345 printf ("#else\n"); | |
| 346 printf (" {\n"); | |
| 347 printf ("#endif\n"); | |
| 348 printf (" \""); | |
| 349 while (*p) | |
| 350 { | |
| 351 if (IS_VSPACE (*p) && prev != '\\') | |
| 352 { | |
| 353 /* Preserve two consecutive \n's or \r's, but treat \r\n | |
| 354 as a single newline. */ | |
| 355 if (*p == '\n' && prev != '\r') | |
| 356 printf ("\\n\\\n"); | |
| 357 } | |
| 358 else | |
| 359 putchar (*p); | |
| 360 prev = *p; | |
| 361 ++p; | |
| 362 } | |
| 363 printf ("\",\n"); | |
| 111 | 364 printf ("#if HAVE_DESIGNATED_UNION_INITIALIZERS\n"); |
| 0 | 365 printf (" },\n"); |
| 366 printf ("#else\n"); | |
| 367 printf (" 0, 0 },\n"); | |
| 368 printf ("#endif\n"); | |
| 369 } | |
| 370 break; | |
| 371 case INSN_OUTPUT_FORMAT_MULTI: | |
| 111 | 372 printf ("#if HAVE_DESIGNATED_UNION_INITIALIZERS\n"); |
| 0 | 373 printf (" { .multi = output_%d },\n", d->code_number); |
| 374 printf ("#else\n"); | |
| 375 printf (" { 0, output_%d, 0 },\n", d->code_number); | |
| 376 printf ("#endif\n"); | |
| 377 break; | |
| 378 case INSN_OUTPUT_FORMAT_FUNCTION: | |
| 111 | 379 printf ("#if HAVE_DESIGNATED_UNION_INITIALIZERS\n"); |
| 0 | 380 printf (" { .function = output_%d },\n", d->code_number); |
| 381 printf ("#else\n"); | |
| 382 printf (" { 0, 0, output_%d },\n", d->code_number); | |
| 383 printf ("#endif\n"); | |
| 384 break; | |
| 385 default: | |
| 386 gcc_unreachable (); | |
| 387 } | |
| 388 | |
| 389 if (d->name && d->name[0] != '*') | |
| 111 | 390 printf (" { (insn_gen_fn::stored_funcptr) gen_%s },\n", d->name); |
| 0 | 391 else |
| 111 | 392 printf (" { 0 },\n"); |
| 0 | 393 |
| 394 printf (" &operand_data[%d],\n", d->operand_number); | |
| 111 | 395 printf (" %d,\n", d->n_generator_args); |
| 0 | 396 printf (" %d,\n", d->n_operands); |
| 397 printf (" %d,\n", d->n_dups); | |
| 398 printf (" %d,\n", d->n_alternatives); | |
| 399 printf (" %d\n", d->output_format); | |
| 400 | |
| 111 | 401 printf (" },\n"); |
| 0 | 402 } |
| 403 printf ("};\n\n\n"); | |
| 404 } | |
| 405 | |
| 406 static void | |
| 407 output_get_insn_name (void) | |
| 408 { | |
| 409 printf ("const char *\n"); | |
| 410 printf ("get_insn_name (int code)\n"); | |
| 411 printf ("{\n"); | |
| 412 printf (" if (code == NOOP_MOVE_INSN_CODE)\n"); | |
| 413 printf (" return \"NOOP_MOVE\";\n"); | |
| 414 printf (" else\n"); | |
| 415 printf (" return insn_data[code].name;\n"); | |
| 416 printf ("}\n"); | |
| 417 } | |
| 418 | |
| 419 | |
| 111 | 420 /* Stores the operand data into `d->operand[i]'. |
| 0 | 421 |
| 422 THIS_ADDRESS_P is nonzero if the containing rtx was an ADDRESS. | |
| 423 THIS_STRICT_LOW is nonzero if the containing rtx was a STRICT_LOW_PART. */ | |
| 424 | |
| 425 static void | |
| 145 | 426 scan_operands (class data *d, rtx part, int this_address_p, |
| 0 | 427 int this_strict_low) |
| 428 { | |
| 429 int i, j; | |
| 430 const char *format_ptr; | |
| 431 int opno; | |
| 432 | |
| 433 if (part == 0) | |
| 434 return; | |
| 435 | |
| 436 switch (GET_CODE (part)) | |
| 437 { | |
| 438 case MATCH_OPERAND: | |
| 439 opno = XINT (part, 0); | |
| 111 | 440 if (opno >= MAX_MAX_OPERANDS) |
| 0 | 441 { |
| 111 | 442 error_at (d->loc, "maximum number of operands exceeded"); |
| 0 | 443 return; |
| 444 } | |
| 445 if (d->operand[opno].seen) | |
| 111 | 446 error_at (d->loc, "repeated operand number %d\n", opno); |
| 0 | 447 |
| 448 d->operand[opno].seen = 1; | |
| 449 d->operand[opno].mode = GET_MODE (part); | |
| 450 d->operand[opno].strict_low = this_strict_low; | |
| 451 d->operand[opno].predicate = XSTR (part, 1); | |
| 452 d->operand[opno].constraint = strip_whitespace (XSTR (part, 2)); | |
| 453 d->operand[opno].n_alternatives | |
| 454 = n_occurrences (',', d->operand[opno].constraint) + 1; | |
| 455 d->operand[opno].address_p = this_address_p; | |
| 456 d->operand[opno].eliminable = 1; | |
| 457 return; | |
| 458 | |
| 459 case MATCH_SCRATCH: | |
| 460 opno = XINT (part, 0); | |
| 111 | 461 if (opno >= MAX_MAX_OPERANDS) |
| 0 | 462 { |
| 111 | 463 error_at (d->loc, "maximum number of operands exceeded"); |
| 0 | 464 return; |
| 465 } | |
| 466 if (d->operand[opno].seen) | |
| 111 | 467 error_at (d->loc, "repeated operand number %d\n", opno); |
| 0 | 468 |
| 469 d->operand[opno].seen = 1; | |
| 470 d->operand[opno].mode = GET_MODE (part); | |
| 471 d->operand[opno].strict_low = 0; | |
| 472 d->operand[opno].predicate = "scratch_operand"; | |
| 473 d->operand[opno].constraint = strip_whitespace (XSTR (part, 1)); | |
| 474 d->operand[opno].n_alternatives | |
| 475 = n_occurrences (',', d->operand[opno].constraint) + 1; | |
| 476 d->operand[opno].address_p = 0; | |
| 477 d->operand[opno].eliminable = 0; | |
| 478 return; | |
| 479 | |
| 480 case MATCH_OPERATOR: | |
| 481 case MATCH_PARALLEL: | |
| 482 opno = XINT (part, 0); | |
| 111 | 483 if (opno >= MAX_MAX_OPERANDS) |
| 0 | 484 { |
| 111 | 485 error_at (d->loc, "maximum number of operands exceeded"); |
| 0 | 486 return; |
| 487 } | |
| 488 if (d->operand[opno].seen) | |
| 111 | 489 error_at (d->loc, "repeated operand number %d\n", opno); |
| 0 | 490 |
| 491 d->operand[opno].seen = 1; | |
| 492 d->operand[opno].mode = GET_MODE (part); | |
| 493 d->operand[opno].strict_low = 0; | |
| 494 d->operand[opno].predicate = XSTR (part, 1); | |
| 495 d->operand[opno].constraint = 0; | |
| 496 d->operand[opno].address_p = 0; | |
| 497 d->operand[opno].eliminable = 0; | |
| 498 for (i = 0; i < XVECLEN (part, 2); i++) | |
| 499 scan_operands (d, XVECEXP (part, 2, i), 0, 0); | |
| 500 return; | |
| 501 | |
| 502 case STRICT_LOW_PART: | |
| 503 scan_operands (d, XEXP (part, 0), 0, 1); | |
| 504 return; | |
| 505 | |
| 506 default: | |
| 507 break; | |
| 508 } | |
| 509 | |
| 510 format_ptr = GET_RTX_FORMAT (GET_CODE (part)); | |
| 511 | |
| 512 for (i = 0; i < GET_RTX_LENGTH (GET_CODE (part)); i++) | |
| 513 switch (*format_ptr++) | |
| 514 { | |
| 515 case 'e': | |
| 516 case 'u': | |
| 517 scan_operands (d, XEXP (part, i), 0, 0); | |
| 518 break; | |
| 519 case 'E': | |
| 520 if (XVEC (part, i) != NULL) | |
| 521 for (j = 0; j < XVECLEN (part, i); j++) | |
| 522 scan_operands (d, XVECEXP (part, i, j), 0, 0); | |
| 523 break; | |
| 524 } | |
| 525 } | |
| 526 | |
| 527 /* Compare two operands for content equality. */ | |
| 528 | |
| 529 static int | |
| 530 compare_operands (struct operand_data *d0, struct operand_data *d1) | |
| 531 { | |
| 532 const char *p0, *p1; | |
| 533 | |
| 534 p0 = d0->predicate; | |
| 535 if (!p0) | |
| 536 p0 = ""; | |
| 537 p1 = d1->predicate; | |
| 538 if (!p1) | |
| 539 p1 = ""; | |
| 540 if (strcmp (p0, p1) != 0) | |
| 541 return 0; | |
| 542 | |
| 543 p0 = d0->constraint; | |
| 544 if (!p0) | |
| 545 p0 = ""; | |
| 546 p1 = d1->constraint; | |
| 547 if (!p1) | |
| 548 p1 = ""; | |
| 549 if (strcmp (p0, p1) != 0) | |
| 550 return 0; | |
| 551 | |
| 552 if (d0->mode != d1->mode) | |
| 553 return 0; | |
| 554 | |
| 555 if (d0->strict_low != d1->strict_low) | |
| 556 return 0; | |
| 557 | |
| 558 if (d0->eliminable != d1->eliminable) | |
| 559 return 0; | |
| 560 | |
| 561 return 1; | |
| 562 } | |
| 563 | |
| 564 /* Scan the list of operands we've already committed to output and either | |
| 565 find a subsequence that is the same, or allocate a new one at the end. */ | |
| 566 | |
| 567 static void | |
| 145 | 568 place_operands (class data *d) |
| 0 | 569 { |
| 570 struct operand_data *od, *od2; | |
| 571 int i; | |
| 572 | |
| 573 if (d->n_operands == 0) | |
| 574 { | |
| 575 d->operand_number = 0; | |
| 576 return; | |
| 577 } | |
| 578 | |
| 579 /* Brute force substring search. */ | |
| 580 for (od = odata, i = 0; od; od = od->next, i = 0) | |
| 581 if (compare_operands (od, &d->operand[0])) | |
| 582 { | |
| 583 od2 = od->next; | |
| 584 i = 1; | |
| 585 while (1) | |
| 586 { | |
| 587 if (i == d->n_operands) | |
| 588 goto full_match; | |
| 589 if (od2 == NULL) | |
| 590 goto partial_match; | |
| 591 if (! compare_operands (od2, &d->operand[i])) | |
| 592 break; | |
| 593 ++i, od2 = od2->next; | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 /* Either partial match at the end of the list, or no match. In either | |
| 598 case, we tack on what operands are remaining to the end of the list. */ | |
| 599 partial_match: | |
| 600 d->operand_number = next_operand_number - i; | |
| 601 for (; i < d->n_operands; ++i) | |
| 602 { | |
| 603 od2 = &d->operand[i]; | |
| 604 *odata_end = od2; | |
| 605 odata_end = &od2->next; | |
| 606 od2->index = next_operand_number++; | |
| 607 } | |
| 608 *odata_end = NULL; | |
| 609 return; | |
| 610 | |
| 611 full_match: | |
| 612 d->operand_number = od->index; | |
| 613 return; | |
| 614 } | |
| 615 | |
| 616 | |
| 617 /* Process an assembler template from a define_insn or a define_peephole. | |
| 618 It is either the assembler code template, a list of assembler code | |
| 619 templates, or C code to generate the assembler code template. */ | |
| 620 | |
| 621 static void | |
| 145 | 622 process_template (class data *d, const char *template_code) |
| 0 | 623 { |
| 624 const char *cp; | |
| 625 int i; | |
| 626 | |
| 627 /* Templates starting with * contain straight code to be run. */ | |
| 628 if (template_code[0] == '*') | |
| 629 { | |
| 630 d->template_code = 0; | |
| 631 d->output_format = INSN_OUTPUT_FORMAT_FUNCTION; | |
| 632 | |
| 633 puts ("\nstatic const char *"); | |
| 111 | 634 printf ("output_%d (rtx *operands ATTRIBUTE_UNUSED, rtx_insn *insn ATTRIBUTE_UNUSED)\n", |
| 0 | 635 d->code_number); |
| 636 puts ("{"); | |
| 111 | 637 rtx_reader_ptr->print_md_ptr_loc (template_code); |
| 0 | 638 puts (template_code + 1); |
| 639 puts ("}"); | |
| 640 } | |
| 641 | |
| 642 /* If the assembler code template starts with a @ it is a newline-separated | |
| 643 list of assembler code templates, one for each alternative. */ | |
| 644 else if (template_code[0] == '@') | |
| 645 { | |
| 111 | 646 int found_star = 0; |
| 647 | |
| 648 for (cp = &template_code[1]; *cp; ) | |
| 649 { | |
| 650 while (ISSPACE (*cp)) | |
| 651 cp++; | |
| 652 if (*cp == '*') | |
| 653 found_star = 1; | |
| 654 while (!IS_VSPACE (*cp) && *cp != '\0') | |
| 655 ++cp; | |
| 656 } | |
| 0 | 657 d->template_code = 0; |
| 111 | 658 if (found_star) |
| 659 { | |
| 660 d->output_format = INSN_OUTPUT_FORMAT_FUNCTION; | |
| 661 puts ("\nstatic const char *"); | |
| 662 printf ("output_%d (rtx *operands ATTRIBUTE_UNUSED, " | |
| 663 "rtx_insn *insn ATTRIBUTE_UNUSED)\n", d->code_number); | |
| 664 puts ("{"); | |
| 665 puts (" switch (which_alternative)\n {"); | |
| 666 } | |
| 667 else | |
| 668 { | |
| 669 d->output_format = INSN_OUTPUT_FORMAT_MULTI; | |
| 670 printf ("\nstatic const char * const output_%d[] = {\n", | |
| 671 d->code_number); | |
| 672 } | |
| 0 | 673 |
| 674 for (i = 0, cp = &template_code[1]; *cp; ) | |
| 675 { | |
| 111 | 676 const char *ep, *sp, *bp; |
| 0 | 677 |
| 678 while (ISSPACE (*cp)) | |
| 679 cp++; | |
| 680 | |
| 111 | 681 bp = cp; |
| 682 if (found_star) | |
| 683 { | |
| 684 printf (" case %d:", i); | |
| 685 if (*cp == '*') | |
| 686 { | |
| 687 printf ("\n "); | |
| 688 cp++; | |
| 689 } | |
| 690 else | |
| 691 printf (" return \""); | |
| 692 } | |
| 693 else | |
| 694 printf (" \""); | |
| 0 | 695 |
| 696 for (ep = sp = cp; !IS_VSPACE (*ep) && *ep != '\0'; ++ep) | |
| 697 if (!ISSPACE (*ep)) | |
| 698 sp = ep + 1; | |
| 699 | |
| 700 if (sp != ep) | |
| 111 | 701 message_at (d->loc, "trailing whitespace in output template"); |
| 0 | 702 |
| 703 while (cp < sp) | |
| 704 { | |
| 705 putchar (*cp); | |
| 706 cp++; | |
| 707 } | |
| 708 | |
| 111 | 709 if (!found_star) |
| 710 puts ("\","); | |
| 711 else if (*bp != '*') | |
| 712 puts ("\";"); | |
| 713 else | |
| 714 { | |
| 715 /* The usual action will end with a return. | |
| 716 If there is neither break or return at the end, this is | |
| 717 assumed to be intentional; this allows to have multiple | |
| 718 consecutive alternatives share some code. */ | |
| 719 puts (""); | |
| 720 } | |
| 0 | 721 i++; |
| 722 } | |
| 723 if (i == 1) | |
| 111 | 724 message_at (d->loc, "'@' is redundant for output template with" |
| 725 " single alternative"); | |
| 0 | 726 if (i != d->n_alternatives) |
| 111 | 727 error_at (d->loc, "wrong number of alternatives in the output" |
| 728 " template"); | |
| 0 | 729 |
| 111 | 730 if (found_star) |
| 731 puts (" default: gcc_unreachable ();\n }\n}"); | |
| 732 else | |
| 733 printf ("};\n"); | |
| 0 | 734 } |
| 735 else | |
| 736 { | |
| 737 d->template_code = template_code; | |
| 738 d->output_format = INSN_OUTPUT_FORMAT_SINGLE; | |
| 739 } | |
| 740 } | |
| 741 | |
| 742 /* Check insn D for consistency in number of constraint alternatives. */ | |
| 743 | |
| 744 static void | |
| 145 | 745 validate_insn_alternatives (class data *d) |
| 0 | 746 { |
| 747 int n = 0, start; | |
| 748 | |
| 749 /* Make sure all the operands have the same number of alternatives | |
| 750 in their constraints. Let N be that number. */ | |
| 751 for (start = 0; start < d->n_operands; start++) | |
| 752 if (d->operand[start].n_alternatives > 0) | |
| 753 { | |
| 754 int len, i; | |
| 755 const char *p; | |
| 756 char c; | |
| 757 int which_alternative = 0; | |
| 758 int alternative_count_unsure = 0; | |
| 111 | 759 bool seen_write = false; |
| 0 | 760 |
| 761 for (p = d->operand[start].constraint; (c = *p); p += len) | |
| 762 { | |
| 111 | 763 if ((c == '%' || c == '=' || c == '+') |
| 764 && p != d->operand[start].constraint) | |
| 765 error_at (d->loc, "character '%c' can only be used at the" | |
| 766 " beginning of a constraint string", c); | |
| 767 | |
| 768 if (c == '=' || c == '+') | |
| 769 seen_write = true; | |
| 770 | |
| 771 /* Earlyclobber operands must always be marked write-only | |
| 772 or read/write. */ | |
| 773 if (!seen_write && c == '&') | |
| 774 error_at (d->loc, "earlyclobber operands may not be" | |
| 775 " read-only in alternative %d", which_alternative); | |
| 776 | |
| 0 | 777 if (ISSPACE (c) || strchr (indep_constraints, c)) |
| 778 len = 1; | |
| 779 else if (ISDIGIT (c)) | |
| 780 { | |
| 781 const char *q = p; | |
| 782 do | |
| 783 q++; | |
| 784 while (ISDIGIT (*q)); | |
| 785 len = q - p; | |
| 786 } | |
| 787 else | |
| 111 | 788 len = mdep_constraint_len (p, d->loc, start); |
| 0 | 789 |
| 790 if (c == ',') | |
| 791 { | |
| 792 which_alternative++; | |
| 793 continue; | |
| 794 } | |
| 795 | |
| 796 for (i = 1; i < len; i++) | |
| 797 if (p[i] == '\0') | |
| 798 { | |
| 111 | 799 error_at (d->loc, "NUL in alternative %d of operand %d", |
| 800 which_alternative, start); | |
| 0 | 801 alternative_count_unsure = 1; |
| 802 break; | |
| 803 } | |
| 804 else if (strchr (",#*", p[i])) | |
| 805 { | |
| 111 | 806 error_at (d->loc, "'%c' in alternative %d of operand %d", |
| 807 p[i], which_alternative, start); | |
| 0 | 808 alternative_count_unsure = 1; |
| 809 } | |
| 810 } | |
|
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811 if (!alternative_count_unsure) |
| 0 | 812 { |
|
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813 if (n == 0) |
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814 n = d->operand[start].n_alternatives; |
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815 else if (n != d->operand[start].n_alternatives) |
| 111 | 816 error_at (d->loc, "wrong number of alternatives in operand %d", |
| 817 start); | |
| 0 | 818 } |
| 819 } | |
| 820 | |
| 821 /* Record the insn's overall number of alternatives. */ | |
| 822 d->n_alternatives = n; | |
| 823 } | |
| 824 | |
| 825 /* Verify that there are no gaps in operand numbers for INSNs. */ | |
| 826 | |
| 827 static void | |
| 145 | 828 validate_insn_operands (class data *d) |
| 0 | 829 { |
| 830 int i; | |
| 831 | |
| 832 for (i = 0; i < d->n_operands; ++i) | |
| 833 if (d->operand[i].seen == 0) | |
| 111 | 834 error_at (d->loc, "missing operand %d", i); |
| 0 | 835 } |
|
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836 |
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837 static void |
| 145 | 838 validate_optab_operands (class data *d) |
|
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839 { |
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840 if (!d->name || d->name[0] == '\0' || d->name[0] == '*') |
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841 return; |
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842 |
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843 /* Miscellaneous tests. */ |
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844 if (strncmp (d->name, "cstore", 6) == 0 |
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845 && d->name[strlen (d->name) - 1] == '4' |
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846 && d->operand[0].mode == VOIDmode) |
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847 { |
| 111 | 848 message_at (d->loc, "missing mode for operand 0 of cstore"); |
|
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849 have_error = 1; |
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850 } |
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851 } |
| 0 | 852 |
| 853 /* Look at a define_insn just read. Assign its code number. Record | |
| 854 on idata the template and the number of arguments. If the insn has | |
| 855 a hairy output action, output a function for now. */ | |
| 856 | |
| 857 static void | |
| 111 | 858 gen_insn (md_rtx_info *info) |
| 0 | 859 { |
| 111 | 860 struct pattern_stats stats; |
| 861 rtx insn = info->def; | |
| 862 data *d = new data; | |
| 0 | 863 int i; |
| 864 | |
| 111 | 865 d->code_number = info->index; |
| 866 d->loc = info->loc; | |
| 0 | 867 if (XSTR (insn, 0)[0]) |
| 868 d->name = XSTR (insn, 0); | |
| 869 else | |
| 870 d->name = 0; | |
| 871 | |
| 872 /* Build up the list in the same order as the insns are seen | |
| 873 in the machine description. */ | |
| 874 d->next = 0; | |
| 875 *idata_end = d; | |
| 876 idata_end = &d->next; | |
| 877 | |
| 878 memset (d->operand, 0, sizeof (d->operand)); | |
| 879 | |
| 880 for (i = 0; i < XVECLEN (insn, 1); i++) | |
| 881 scan_operands (d, XVECEXP (insn, 1, i), 0, 0); | |
| 882 | |
| 111 | 883 get_pattern_stats (&stats, XVEC (insn, 1)); |
| 884 d->n_generator_args = stats.num_generator_args; | |
| 885 d->n_operands = stats.num_insn_operands; | |
| 886 d->n_dups = stats.num_dups; | |
| 0 | 887 |
| 888 validate_insn_operands (d); | |
| 889 validate_insn_alternatives (d); | |
|
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890 validate_optab_operands (d); |
| 0 | 891 place_operands (d); |
| 892 process_template (d, XTMPL (insn, 3)); | |
| 893 } | |
| 894 | |
| 895 /* Look at a define_peephole just read. Assign its code number. | |
| 896 Record on idata the template and the number of arguments. | |
| 897 If the insn has a hairy output action, output it now. */ | |
| 898 | |
| 899 static void | |
| 111 | 900 gen_peephole (md_rtx_info *info) |
| 0 | 901 { |
| 111 | 902 struct pattern_stats stats; |
| 903 data *d = new data; | |
| 0 | 904 int i; |
| 905 | |
| 111 | 906 d->code_number = info->index; |
| 907 d->loc = info->loc; | |
| 0 | 908 d->name = 0; |
| 909 | |
| 910 /* Build up the list in the same order as the insns are seen | |
| 911 in the machine description. */ | |
| 912 d->next = 0; | |
| 913 *idata_end = d; | |
| 914 idata_end = &d->next; | |
| 915 | |
| 916 memset (d->operand, 0, sizeof (d->operand)); | |
| 917 | |
| 918 /* Get the number of operands by scanning all the patterns of the | |
| 919 peephole optimizer. But ignore all the rest of the information | |
| 920 thus obtained. */ | |
| 111 | 921 rtx peep = info->def; |
| 0 | 922 for (i = 0; i < XVECLEN (peep, 0); i++) |
| 923 scan_operands (d, XVECEXP (peep, 0, i), 0, 0); | |
| 924 | |
| 111 | 925 get_pattern_stats (&stats, XVEC (peep, 0)); |
| 926 d->n_generator_args = 0; | |
| 927 d->n_operands = stats.num_insn_operands; | |
| 0 | 928 d->n_dups = 0; |
| 929 | |
| 930 validate_insn_alternatives (d); | |
| 931 place_operands (d); | |
| 932 process_template (d, XTMPL (peep, 2)); | |
| 933 } | |
| 934 | |
| 935 /* Process a define_expand just read. Assign its code number, | |
| 936 only for the purposes of `insn_gen_function'. */ | |
| 937 | |
| 938 static void | |
| 111 | 939 gen_expand (md_rtx_info *info) |
| 0 | 940 { |
| 111 | 941 struct pattern_stats stats; |
| 942 rtx insn = info->def; | |
| 943 data *d = new data; | |
| 0 | 944 int i; |
| 945 | |
| 111 | 946 d->code_number = info->index; |
| 947 d->loc = info->loc; | |
| 0 | 948 if (XSTR (insn, 0)[0]) |
| 949 d->name = XSTR (insn, 0); | |
| 950 else | |
| 951 d->name = 0; | |
| 952 | |
| 953 /* Build up the list in the same order as the insns are seen | |
| 954 in the machine description. */ | |
| 955 d->next = 0; | |
| 956 *idata_end = d; | |
| 957 idata_end = &d->next; | |
| 958 | |
| 959 memset (d->operand, 0, sizeof (d->operand)); | |
| 960 | |
| 961 /* Scan the operands to get the specified predicates and modes, | |
| 962 since expand_binop needs to know them. */ | |
| 963 | |
| 964 if (XVEC (insn, 1)) | |
| 965 for (i = 0; i < XVECLEN (insn, 1); i++) | |
| 966 scan_operands (d, XVECEXP (insn, 1, i), 0, 0); | |
| 967 | |
| 111 | 968 get_pattern_stats (&stats, XVEC (insn, 1)); |
| 969 d->n_generator_args = stats.num_generator_args; | |
| 970 d->n_operands = stats.num_insn_operands; | |
| 971 d->n_dups = stats.num_dups; | |
| 0 | 972 d->template_code = 0; |
| 973 d->output_format = INSN_OUTPUT_FORMAT_NONE; | |
| 974 | |
| 975 validate_insn_alternatives (d); | |
|
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976 validate_optab_operands (d); |
| 0 | 977 place_operands (d); |
| 978 } | |
| 979 | |
| 980 static void | |
| 111 | 981 init_insn_for_nothing (void) |
| 0 | 982 { |
| 145 | 983 idata = XCNEW (class data); |
| 111 | 984 new (idata) data (); |
| 985 idata->name = "*placeholder_for_nothing"; | |
| 986 idata->loc = file_location ("<internal>", 0, 0); | |
| 987 idata_end = &idata->next; | |
| 0 | 988 } |
| 989 | |
| 111 | 990 extern int main (int, const char **); |
| 0 | 991 |
| 992 int | |
| 111 | 993 main (int argc, const char **argv) |
| 0 | 994 { |
| 111 | 995 progname = "genoutput"; |
| 0 | 996 |
| 111 | 997 init_insn_for_nothing (); |
| 0 | 998 |
|
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changeset
|
999 if (!init_rtx_reader_args (argc, argv)) |
| 0 | 1000 return (FATAL_EXIT_CODE); |
| 1001 | |
| 1002 output_prologue (); | |
| 1003 | |
| 1004 /* Read the machine description. */ | |
| 1005 | |
| 111 | 1006 md_rtx_info info; |
| 1007 while (read_md_rtx (&info)) | |
| 1008 switch (GET_CODE (info.def)) | |
| 1009 { | |
| 1010 case DEFINE_INSN: | |
| 1011 gen_insn (&info); | |
| 1012 break; | |
| 0 | 1013 |
| 111 | 1014 case DEFINE_PEEPHOLE: |
| 1015 gen_peephole (&info); | |
| 0 | 1016 break; |
| 1017 | |
| 111 | 1018 case DEFINE_EXPAND: |
| 1019 gen_expand (&info); | |
| 1020 break; | |
| 0 | 1021 |
| 111 | 1022 case DEFINE_CONSTRAINT: |
| 1023 case DEFINE_REGISTER_CONSTRAINT: | |
| 1024 case DEFINE_ADDRESS_CONSTRAINT: | |
| 1025 case DEFINE_MEMORY_CONSTRAINT: | |
| 1026 case DEFINE_SPECIAL_MEMORY_CONSTRAINT: | |
| 1027 note_constraint (&info); | |
| 1028 break; | |
| 0 | 1029 |
| 111 | 1030 default: |
| 1031 break; | |
| 1032 } | |
| 0 | 1033 |
| 111 | 1034 printf ("\n\n"); |
| 0 | 1035 output_operand_data (); |
| 1036 output_insn_data (); | |
| 1037 output_get_insn_name (); | |
| 1038 | |
| 1039 fflush (stdout); | |
| 1040 return (ferror (stdout) != 0 || have_error | |
| 1041 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); | |
| 1042 } | |
| 1043 | |
| 1044 /* Return the number of occurrences of character C in string S or | |
| 1045 -1 if S is the null string. */ | |
| 1046 | |
| 1047 static int | |
| 1048 n_occurrences (int c, const char *s) | |
| 1049 { | |
| 1050 int n = 0; | |
| 1051 | |
| 1052 if (s == 0 || *s == '\0') | |
| 1053 return -1; | |
| 1054 | |
| 1055 while (*s) | |
| 1056 n += (*s++ == c); | |
| 1057 | |
| 1058 return n; | |
| 1059 } | |
| 1060 | |
| 1061 /* Remove whitespace in `s' by moving up characters until the end. | |
| 1062 Return a new string. */ | |
| 1063 | |
| 1064 static const char * | |
| 1065 strip_whitespace (const char *s) | |
| 1066 { | |
| 1067 char *p, *q; | |
| 1068 char ch; | |
| 1069 | |
| 1070 if (s == 0) | |
| 1071 return 0; | |
| 1072 | |
| 1073 p = q = XNEWVEC (char, strlen (s) + 1); | |
| 1074 while ((ch = *s++) != '\0') | |
| 1075 if (! ISSPACE (ch)) | |
| 1076 *p++ = ch; | |
| 1077 | |
| 1078 *p = '\0'; | |
| 1079 return q; | |
| 1080 } | |
| 1081 | |
| 111 | 1082 /* Record just enough information about the constraint in *INFO to allow |
| 1083 checking of operand constraint strings above, in validate_insn_alternatives. | |
| 1084 Does not validate most properties of the constraint itself; does enforce | |
| 1085 no duplicate names, no overlap with MI constraints, and no prefixes. */ | |
| 0 | 1086 static void |
| 111 | 1087 note_constraint (md_rtx_info *info) |
| 0 | 1088 { |
| 111 | 1089 rtx exp = info->def; |
| 0 | 1090 const char *name = XSTR (exp, 0); |
| 145 | 1091 class constraint_data **iter, **slot, *new_cdata; |
| 0 | 1092 |
| 111 | 1093 if (strcmp (name, "TARGET_MEM_CONSTRAINT") == 0) |
| 1094 name = general_mem; | |
| 1095 unsigned int namelen = strlen (name); | |
| 1096 | |
| 1097 if (strchr (indep_constraints, name[0])) | |
| 0 | 1098 { |
| 1099 if (name[1] == '\0') | |
| 111 | 1100 error_at (info->loc, "constraint letter '%s' cannot be " |
| 1101 "redefined by the machine description", name); | |
| 0 | 1102 else |
| 111 | 1103 error_at (info->loc, "constraint name '%s' cannot be defined by " |
| 1104 "the machine description, as it begins with '%c'", | |
| 1105 name, name[0]); | |
| 0 | 1106 return; |
| 1107 } | |
| 1108 | |
| 1109 slot = &constraints_by_letter_table[(unsigned int)name[0]]; | |
| 1110 for (iter = slot; *iter; iter = &(*iter)->next_this_letter) | |
| 1111 { | |
| 1112 /* This causes slot to end up pointing to the | |
| 1113 next_this_letter field of the last constraint with a name | |
| 1114 of equal or greater length than the new constraint; hence | |
| 1115 the new constraint will be inserted after all previous | |
| 1116 constraints with names of the same length. */ | |
| 1117 if ((*iter)->namelen >= namelen) | |
| 1118 slot = iter; | |
| 1119 | |
| 1120 if (!strcmp ((*iter)->name, name)) | |
| 1121 { | |
| 111 | 1122 error_at (info->loc, "redefinition of constraint '%s'", name); |
| 1123 message_at ((*iter)->loc, "previous definition is here"); | |
| 0 | 1124 return; |
| 1125 } | |
| 1126 else if (!strncmp ((*iter)->name, name, (*iter)->namelen)) | |
| 1127 { | |
| 111 | 1128 error_at (info->loc, "defining constraint '%s' here", name); |
| 1129 message_at ((*iter)->loc, "renders constraint '%s' " | |
| 1130 "(defined here) a prefix", (*iter)->name); | |
| 0 | 1131 return; |
| 1132 } | |
| 1133 else if (!strncmp ((*iter)->name, name, namelen)) | |
| 1134 { | |
| 111 | 1135 error_at (info->loc, "constraint '%s' is a prefix", name); |
| 1136 message_at ((*iter)->loc, "of constraint '%s' " | |
| 1137 "(defined here)", (*iter)->name); | |
| 0 | 1138 return; |
| 1139 } | |
| 1140 } | |
| 145 | 1141 new_cdata = XNEWVAR (class constraint_data, |
| 1142 sizeof (class constraint_data) + namelen); | |
| 111 | 1143 new (new_cdata) constraint_data (); |
| 1144 strcpy (CONST_CAST (char *, new_cdata->name), name); | |
| 0 | 1145 new_cdata->namelen = namelen; |
| 111 | 1146 new_cdata->loc = info->loc; |
| 0 | 1147 new_cdata->next_this_letter = *slot; |
| 1148 *slot = new_cdata; | |
| 1149 } | |
| 1150 | |
| 1151 /* Return the length of the constraint name beginning at position S | |
| 1152 of an operand constraint string, or issue an error message if there | |
| 1153 is no such constraint. Does not expect to be called for generic | |
| 1154 constraints. */ | |
| 1155 static int | |
| 111 | 1156 mdep_constraint_len (const char *s, file_location loc, int opno) |
| 0 | 1157 { |
| 145 | 1158 class constraint_data *p; |
| 0 | 1159 |
| 1160 p = constraints_by_letter_table[(unsigned int)s[0]]; | |
| 1161 | |
| 1162 if (p) | |
| 1163 for (; p; p = p->next_this_letter) | |
| 1164 if (!strncmp (s, p->name, p->namelen)) | |
| 1165 return p->namelen; | |
| 1166 | |
| 111 | 1167 error_at (loc, "error: undefined machine-specific constraint " |
| 1168 "at this point: \"%s\"", s); | |
| 1169 message_at (loc, "note: in operand %d", opno); | |
| 0 | 1170 return 1; /* safe */ |
| 1171 } |