gcc/optc-gen.awk

   1 #  Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010
   2 #  Free Software Foundation, Inc.
   3 #  Contributed by Kelley Cook, June 2004.
   4 #  Original code from Neil Booth, May 2003.
   5 #
   6 # This program is free software; you can redistribute it and/or modify it
   7 # under the terms of the GNU General Public License as published by the
   8 # Free Software Foundation; either version 3, or (at your option) any
   9 # later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; see the file COPYING3.  If not see
  18 # <http://www.gnu.org/licenses/>.
  19
  20 # This Awk script reads in the option records generated from
  21 # opt-gather.awk, combines the flags of duplicate options and generates a
  22 # C file.
  23 #
  24 # This program uses functions from opt-functions.awk
  25 #
  26 # Usage: awk -f opt-functions.awk -f optc-gen.awk \
  27 #            [-v header_name=header.h] < inputfile > options.c
  28
  29 BEGIN {
  30         n_opts = 0
  31         n_langs = 0
  32         n_target_save = 0
  33         quote = "\042"
  34         comma = ","
  35         FS=SUBSEP
  36         # Default the name of header created from opth-gen.awk to options.h
  37         if (header_name == "") header_name="options.h"
  38 }
  39
  40 # Collect the text and flags of each option into an array
  41         {
  42                 if ($1 == "Language") {
  43                         langs[n_langs] = $2
  44                         n_langs++;
  45                 }
  46                 else if ($1 == "TargetSave") {
  47                         # Make sure the declarations are put in source order
  48                         target_save_decl[n_target_save] = $2
  49                         n_target_save++
  50                 }
  51                 else {
  52                         name = opt_args("Mask", $1)
  53                         if (name == "") {
  54                                 opts[n_opts]  = $1
  55                                 flags[n_opts] = $2
  56                                 help[n_opts]  = $3
  57                                 for (i = 4; i <= NF; i++)
  58                                         help[n_opts] = help[n_opts] " " $i
  59                                 n_opts++;
  60                         }
  61                 }
  62         }
  63
  64 # Dump that array of options into a C file.
  65 END {
  66 print "/* This file is auto-generated by optc-gen.awk.  */"
  67 print ""
  68 n_headers = split(header_name, headers, " ")
  69 for (i = 1; i <= n_headers; i++)
  70         print "#include " quote headers[i] quote
  71 print "#include " quote "opts.h" quote
  72 print "#include " quote "intl.h" quote
  73 print ""
  74 print "#ifdef GCC_DRIVER"
  75 print "int target_flags;"
  76 print "#else"
  77 print "#include " quote "flags.h" quote
  78 print "#include " quote "target.h" quote
  79 print "#endif /* GCC_DRIVER */"
  80 print ""
  81
  82 have_save = 0;
  83 for (i = 0; i < n_opts; i++) {
  84         if (flag_set_p("Save", flags[i]))
  85                 have_save = 1;
  86
  87         name = var_name(flags[i]);
  88         if (name == "")
  89                 continue;
  90
  91         if (flag_set_p("VarExists", flags[i])) {
  92                 # Need it for the gcc driver.
  93                 if (name in var_seen)
  94                         continue;
  95                 init = ""
  96                 gcc_driver = 1
  97         }
  98         else {
  99                 init = opt_args("Init", flags[i])
 100                 if (init != "")
 101                         init = " = " init;
 102                 else if (name in var_seen)
 103                         continue;
 104                 gcc_driver = 0
 105         }
 106
 107         if (gcc_driver == 1)
 108                 print "#ifdef GCC_DRIVER"
 109         print "/* Set by -" opts[i] "."
 110         print "   " help[i] "  */"
 111         print var_type(flags[i]) name init ";"
 112         if (gcc_driver == 1)
 113                 print "#endif /* GCC_DRIVER */"
 114         print ""
 115
 116         var_seen[name] = 1;
 117 }
 118
 119 print ""
 120 print "/* Local state variables.  */"
 121 for (i = 0; i < n_opts; i++) {
 122         name = static_var(opts[i], flags[i]);
 123         if (name != "")
 124                 print "static " var_type(flags[i]) name ";"
 125 }
 126 print ""
 127
 128 print "const char * const lang_names[] =\n{"
 129 for (i = 0; i < n_langs; i++) {
 130         macros[i] = "CL_" langs[i]
 131         gsub( "[^A-Za-z0-9_]", "X", macros[i] )
 132         s = substr("         ", length (macros[i]))
 133         print "  " quote langs[i] quote ","
 134     }
 135
 136 print "  0\n};\n"
 137 print "const unsigned int cl_options_count = N_OPTS;\n"
 138 print "const unsigned int cl_lang_count = " n_langs ";\n"
 139
 140 print "const struct cl_option cl_options[] =\n{"
 141
 142 j = 0
 143 for (i = 0; i < n_opts; i++) {
 144         back_chain[i] = "N_OPTS";
 145         indices[opts[i]] = j;
 146         # Combine the flags of identical switches.  Switches
 147         # appear many times if they are handled by many front
 148         # ends, for example.
 149         while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
 150                 flags[i + 1] = flags[i] " " flags[i + 1];
 151                 if (help[i + 1] == "")
 152                         help[i + 1] = help[i]
 153                 else if (help[i] != "" && help[i + 1] != help[i])
 154                         print "warning: multiple different help strings for " \
 155                                 opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \
 156                                 | "cat 1>&2"
 157                 i++;
 158                 back_chain[i] = "N_OPTS";
 159                 indices[opts[i]] = j;
 160         }
 161         j++;
 162 }
 163
 164 for (i = 0; i < n_opts; i++) {
 165         # With identical flags, pick only the last one.  The
 166         # earlier loop ensured that it has all flags merged,
 167         # and a nonempty help text if one of the texts was nonempty.
 168         while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
 169                 i++;
 170         }
 171
 172         len = length (opts[i]);
 173         enum = "OPT_" opts[i]
 174         if (opts[i] == "finline-limit=" || opts[i] == "Wlarger-than=" \
 175             || opts[i] == "ftemplate-depth=")
 176                 enum = enum "eq"
 177         gsub ("[^A-Za-z0-9]", "_", enum)
 178
 179         # If this switch takes joined arguments, back-chain all
 180         # subsequent switches to it for which it is a prefix.  If
 181         # a later switch S is a longer prefix of a switch T, T
 182         # will be back-chained to S in a later iteration of this
 183         # for() loop, which is what we want.
 184         if (flag_set_p("Joined.*", flags[i])) {
 185                 for (j = i + 1; j < n_opts; j++) {
 186                         if (substr (opts[j], 1, len) != opts[i])
 187                                 break;
 188                         back_chain[j] = enum;
 189                 }
 190         }
 191
 192         s = substr("                                  ", length (opts[i]))
 193         if (i + 1 == n_opts)
 194                 comma = ""
 195
 196         if (help[i] == "")
 197                 hlp = "0"
 198         else
 199                 hlp = quote help[i] quote;
 200
 201         neg = opt_args("Negative", flags[i]);
 202         if (neg != "")
 203                 idx = indices[neg]
 204         else {
 205                 if (flag_set_p("RejectNegative", flags[i]))
 206                         idx = -1;
 207                 else {
 208                         if (opts[i] ~ "^[Wfm]")
 209                                 idx = indices[opts[i]];
 210                         else
 211                                 idx = -1;
 212                 }
 213         }
 214         # Split the printf after %u to work around an ia64-hp-hpux11.23
 215         # awk bug.
 216         printf("  { %c-%s%c,\n    %s,\n    %s, %u,",
 217                quote, opts[i], quote, hlp, back_chain[i], len)
 218         printf(" %d,\n", idx)
 219         condition = opt_args("Condition", flags[i])
 220         cl_flags = switch_flags(flags[i])
 221         if (condition != "")
 222                 printf("#if %s\n" \
 223                        "    %s,\n" \
 224                        "#else\n" \
 225                        "    CL_DISABLED,\n" \
 226                        "#endif\n",
 227                        condition, cl_flags, cl_flags)
 228         else
 229                 printf("    %s,\n", cl_flags)
 230         printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),
 231                var_set(flags[i]), comma)
 232 }
 233
 234 print "};"
 235
 236 print "";
 237 print "#if !defined(GCC_DRIVER) && !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)"
 238 print "";
 239 print "/* Save optimization variables into a structure.  */"
 240 print "void";
 241 print "cl_optimization_save (struct cl_optimization *ptr)";
 242 print "{";
 243
 244 n_opt_char = 2;
 245 n_opt_short = 0;
 246 n_opt_int = 0;
 247 n_opt_other = 0;
 248 var_opt_char[0] = "optimize";
 249 var_opt_char[1] = "optimize_size";
 250 var_opt_range["optimize"] = "0, 255";
 251 var_opt_range["optimize_size"] = "0, 255";
 252
 253 # Sort by size to mimic how the structure is laid out to be friendlier to the
 254 # cache.
 255
 256 for (i = 0; i < n_opts; i++) {
 257         if (flag_set_p("Optimization", flags[i])) {
 258                 name = var_name(flags[i])
 259                 if(name == "")
 260                         continue;
 261
 262                 if(name in var_opt_seen)
 263                         continue;
 264
 265                 var_opt_seen[name]++;
 266                 otype = var_type_struct(flags[i]);
 267                 if (otype ~ "^((un)?signed +)?int *$")
 268                         var_opt_int[n_opt_int++] = name;
 269
 270                 else if (otype ~ "^((un)?signed +)?short *$")
 271                         var_opt_short[n_opt_short++] = name;
 272
 273                 else if (otype ~ "^((un)?signed +)?char *$") {
 274                         var_opt_char[n_opt_char++] = name;
 275                         if (otype ~ "^unsigned +char *$")
 276                                 var_opt_range[name] = "0, 255"
 277                         else if (otype ~ "^signed +char *$")
 278                                 var_opt_range[name] = "-128, 127"
 279                 }
 280                 else
 281                         var_opt_other[n_opt_other++] = name;
 282         }
 283 }
 284
 285 for (i = 0; i < n_opt_char; i++) {
 286         name = var_opt_char[i];
 287         if (var_opt_range[name] != "")
 288                 print "  gcc_assert (IN_RANGE (" name ", " var_opt_range[name] "));";
 289 }
 290
 291 print "";
 292 for (i = 0; i < n_opt_other; i++) {
 293         print "  ptr->" var_opt_other[i] " = " var_opt_other[i] ";";
 294 }
 295
 296 for (i = 0; i < n_opt_int; i++) {
 297         print "  ptr->" var_opt_int[i] " = " var_opt_int[i] ";";
 298 }
 299
 300 for (i = 0; i < n_opt_short; i++) {
 301         print "  ptr->" var_opt_short[i] " = " var_opt_short[i] ";";
 302 }
 303
 304 for (i = 0; i < n_opt_char; i++) {
 305         print "  ptr->" var_opt_char[i] " = " var_opt_char[i] ";";
 306 }
 307
 308 print "}";
 309
 310 print "";
 311 print "/* Restore optimization options from a structure.  */";
 312 print "void";
 313 print "cl_optimization_restore (struct cl_optimization *ptr)";
 314 print "{";
 315
 316 for (i = 0; i < n_opt_other; i++) {
 317         print "  " var_opt_other[i] " = ptr->" var_opt_other[i] ";";
 318 }
 319
 320 for (i = 0; i < n_opt_int; i++) {
 321         print "  " var_opt_int[i] " = ptr->" var_opt_int[i] ";";
 322 }
 323
 324 for (i = 0; i < n_opt_short; i++) {
 325         print "  " var_opt_short[i] " = ptr->" var_opt_short[i] ";";
 326 }
 327
 328 for (i = 0; i < n_opt_char; i++) {
 329         print "  " var_opt_char[i] " = ptr->" var_opt_char[i] ";";
 330 }
 331
 332 print "  targetm.override_options_after_change ();";
 333 print "}";
 334
 335 print "";
 336 print "/* Print optimization options from a structure.  */";
 337 print "void";
 338 print "cl_optimization_print (FILE *file,";
 339 print "                       int indent_to,";
 340 print "                       struct cl_optimization *ptr)";
 341 print "{";
 342
 343 print "  fputs (\"\\n\", file);";
 344 for (i = 0; i < n_opt_other; i++) {
 345         print "  if (ptr->" var_opt_other[i] ")";
 346         print "    fprintf (file, \"%*s%s (0x%lx)\\n\",";
 347         print "             indent_to, \"\",";
 348         print "             \"" var_opt_other[i] "\",";
 349         print "             (unsigned long)ptr->" var_opt_other[i] ");";
 350         print "";
 351 }
 352
 353 for (i = 0; i < n_opt_int; i++) {
 354         print "  if (ptr->" var_opt_int[i] ")";
 355         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 356         print "             indent_to, \"\",";
 357         print "             \"" var_opt_int[i] "\",";
 358         print "             ptr->" var_opt_int[i] ");";
 359         print "";
 360 }
 361
 362 for (i = 0; i < n_opt_short; i++) {
 363         print "  if (ptr->" var_opt_short[i] ")";
 364         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 365         print "             indent_to, \"\",";
 366         print "             \"" var_opt_short[i] "\",";
 367         print "             ptr->" var_opt_short[i] ");";
 368         print "";
 369 }
 370
 371 for (i = 0; i < n_opt_char; i++) {
 372         print "  if (ptr->" var_opt_char[i] ")";
 373         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 374         print "             indent_to, \"\",";
 375         print "             \"" var_opt_char[i] "\",";
 376         print "             ptr->" var_opt_char[i] ");";
 377         print "";
 378 }
 379
 380 print "}";
 381
 382 print "";
 383 print "/* Save selected option variables into a structure.  */"
 384 print "void";
 385 print "cl_target_option_save (struct cl_target_option *ptr)";
 386 print "{";
 387
 388 n_target_char = 0;
 389 n_target_short = 0;
 390 n_target_int = 0;
 391 n_target_other = 0;
 392
 393 if (have_save) {
 394         for (i = 0; i < n_opts; i++) {
 395                 if (flag_set_p("Save", flags[i])) {
 396                         name = var_name(flags[i])
 397                         if(name == "")
 398                                 name = "target_flags";
 399
 400                         if(name in var_save_seen)
 401                                 continue;
 402
 403                         var_save_seen[name]++;
 404                         otype = var_type_struct(flags[i])
 405                         if (otype ~ "^((un)?signed +)?int *$")
 406                                 var_target_int[n_target_int++] = name;
 407
 408                         else if (otype ~ "^((un)?signed +)?short *$")
 409                                 var_target_short[n_target_short++] = name;
 410
 411                         else if (otype ~ "^((un)?signed +)?char *$") {
 412                                 var_target_char[n_target_char++] = name;
 413                                 if (otype ~ "^unsigned +char *$")
 414                                         var_target_range[name] = "0, 255"
 415                                 else if (otype ~ "^signed +char *$")
 416                                         var_target_range[name] = "-128, 127"
 417                         }
 418                         else
 419                                 var_target_other[n_target_other++] = name;
 420                 }
 421         }
 422 } else {
 423         var_target_int[n_target_int++] = "target_flags";
 424 }
 425
 426 have_assert = 0;
 427 for (i = 0; i < n_target_char; i++) {
 428         name = var_target_char[i];
 429         if (var_target_range[name] != "") {
 430                 have_assert = 1;
 431                 print "  gcc_assert (IN_RANGE (" name ", " var_target_range[name] "));";
 432         }
 433 }
 434
 435 if (have_assert)
 436         print "";
 437
 438 print "  if (targetm.target_option.save)";
 439 print "    targetm.target_option.save (ptr);";
 440 print "";
 441
 442 for (i = 0; i < n_target_other; i++) {
 443         print "  ptr->" var_target_other[i] " = " var_target_other[i] ";";
 444 }
 445
 446 for (i = 0; i < n_target_int; i++) {
 447         print "  ptr->" var_target_int[i] " = " var_target_int[i] ";";
 448 }
 449
 450 for (i = 0; i < n_target_short; i++) {
 451         print "  ptr->" var_target_short[i] " = " var_target_short[i] ";";
 452 }
 453
 454 for (i = 0; i < n_target_char; i++) {
 455         print "  ptr->" var_target_char[i] " = " var_target_char[i] ";";
 456 }
 457
 458 print "}";
 459
 460 print "";
 461 print "/* Restore selected current options from a structure.  */";
 462 print "void";
 463 print "cl_target_option_restore (struct cl_target_option *ptr)";
 464 print "{";
 465
 466 for (i = 0; i < n_target_other; i++) {
 467         print "  " var_target_other[i] " = ptr->" var_target_other[i] ";";
 468 }
 469
 470 for (i = 0; i < n_target_int; i++) {
 471         print "  " var_target_int[i] " = ptr->" var_target_int[i] ";";
 472 }
 473
 474 for (i = 0; i < n_target_short; i++) {
 475         print "  " var_target_short[i] " = ptr->" var_target_short[i] ";";
 476 }
 477
 478 for (i = 0; i < n_target_char; i++) {
 479         print "  " var_target_char[i] " = ptr->" var_target_char[i] ";";
 480 }
 481
 482 # This must occur after the normal variables in case the code depends on those
 483 # variables.
 484 print "";
 485 print "  if (targetm.target_option.restore)";
 486 print "    targetm.target_option.restore (ptr);";
 487
 488 print "}";
 489
 490 print "";
 491 print "/* Print optimization options from a structure.  */";
 492 print "void";
 493 print "cl_target_option_print (FILE *file,";
 494 print "                        int indent,";
 495 print "                        struct cl_target_option *ptr)";
 496 print "{";
 497
 498 print "  fputs (\"\\n\", file);";
 499 for (i = 0; i < n_target_other; i++) {
 500         print "  if (ptr->" var_target_other[i] ")";
 501         print "    fprintf (file, \"%*s%s (0x%lx)\\n\",";
 502         print "             indent, \"\",";
 503         print "             \"" var_target_other[i] "\",";
 504         print "             (unsigned long)ptr->" var_target_other[i] ");";
 505         print "";
 506 }
 507
 508 for (i = 0; i < n_target_int; i++) {
 509         print "  if (ptr->" var_target_int[i] ")";
 510         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 511         print "             indent, \"\",";
 512         print "             \"" var_target_int[i] "\",";
 513         print "             ptr->" var_target_int[i] ");";
 514         print "";
 515 }
 516
 517 for (i = 0; i < n_target_short; i++) {
 518         print "  if (ptr->" var_target_short[i] ")";
 519         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 520         print "             indent, \"\",";
 521         print "             \"" var_target_short[i] "\",";
 522         print "             ptr->" var_target_short[i] ");";
 523         print "";
 524 }
 525
 526 for (i = 0; i < n_target_char; i++) {
 527         print "  if (ptr->" var_target_char[i] ")";
 528         print "    fprintf (file, \"%*s%s (0x%x)\\n\",";
 529         print "             indent, \"\",";
 530         print "             \"" var_target_char[i] "\",";
 531         print "             ptr->" var_target_char[i] ");";
 532         print "";
 533 }
 534
 535 print "";
 536 print "  if (targetm.target_option.print)";
 537 print "    targetm.target_option.print (file, indent, ptr);";
 538
 539 print "}";
 540 print "#endif";
 541
 542 }