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         n_extra_vars = 0
  34         quote = "\042"
  35         comma = ","
  36         FS=SUBSEP
  37         # Default the name of header created from opth-gen.awk to options.h
  38         if (header_name == "") header_name="options.h"
  39 }
  40
  41 # Collect the text and flags of each option into an array
  42         {
  43                 if ($1 == "Language") {
  44                         langs[n_langs] = $2
  45                         n_langs++;
  46                 }
  47                 else if ($1 == "TargetSave") {
  48                         # Make sure the declarations are put in source order
  49                         target_save_decl[n_target_save] = $2
  50                         n_target_save++
  51                 }
  52                 else if ($1 == "Variable") {
  53                         extra_vars[n_extra_vars] = $2
  54                         n_extra_vars++
  55                 }
  56                 else {
  57                         name = opt_args("Mask", $1)
  58                         if (name == "") {
  59                                 opts[n_opts]  = $1
  60                                 flags[n_opts] = $2
  61                                 help[n_opts]  = $3
  62                                 for (i = 4; i <= NF; i++)
  63                                         help[n_opts] = help[n_opts] " " $i
  64                                 n_opts++;
  65                         }
  66                 }
  67         }
  68
  69 # Dump that array of options into a C file.
  70 END {
  71 print "/* This file is auto-generated by optc-gen.awk.  */"
  72 print ""
  73 n_headers = split(header_name, headers, " ")
  74 for (i = 1; i <= n_headers; i++)
  75         print "#include " quote headers[i] quote
  76 print "#include " quote "opts.h" quote
  77 print "#include " quote "intl.h" quote
  78 print ""
  79 print "#ifdef GCC_DRIVER"
  80 print "int target_flags_explicit;"
  81 print "#else"
  82 print "#include " quote "flags.h" quote
  83 print "#include " quote "target.h" quote
  84 print "#endif /* GCC_DRIVER */"
  85 print ""
  86
  87 have_save = 0;
  88 print "struct gcc_options global_options =\n{"
  89 for (i = 0; i < n_extra_vars; i++) {
  90         var = extra_vars[i]
  91         init = extra_vars[i]
  92         if (var ~ "=" ) {
  93                 sub(".*= *", "", init)
  94                 sub(" *=.*", "", var)
  95                 sub("^.*[ *]", "", var)
  96         } else {
  97                 init = "0"
  98         }
  99         var_seen[var] = 1
 100         print "  " init ", /* " var " */"
 101 }
 102 for (i = 0; i < n_opts; i++) {
 103         if (flag_set_p("Save", flags[i]))
 104                 have_save = 1;
 105
 106         name = var_name(flags[i]);
 107         if (name == "")
 108                 continue;
 109
 110         init = opt_args("Init", flags[i])
 111         if (init != "") {
 112                 if (name in var_init && var_init[name] != init)
 113                         print "#error multiple initializers for " name
 114                 var_init[name] = init
 115         }
 116 }
 117 for (i = 0; i < n_opts; i++) {
 118         name = var_name(flags[i]);
 119         if (name == "")
 120                 continue;
 121
 122         if (name in var_seen)
 123                 continue;
 124
 125         if (name in var_init)
 126                 init = var_init[name]
 127         else
 128                 init = "0"
 129
 130         print "  " init ", /* " name " */"
 131
 132         var_seen[name] = 1;
 133 }
 134 for (i = 0; i < n_opts; i++) {
 135         name = static_var(opts[i], flags[i]);
 136         if (name != "") {
 137                 print "  0, /* " name " (private state) */"
 138                 print "#undef x_" name
 139         }
 140 }
 141 print "};"
 142 print ""
 143
 144 print "const char * const lang_names[] =\n{"
 145 for (i = 0; i < n_langs; i++) {
 146         macros[i] = "CL_" langs[i]
 147         gsub( "[^A-Za-z0-9_]", "X", macros[i] )
 148         s = substr("         ", length (macros[i]))
 149         print "  " quote langs[i] quote ","
 150     }
 151
 152 print "  0\n};\n"
 153 print "const unsigned int cl_options_count = N_OPTS;\n"
 154 print "const unsigned int cl_lang_count = " n_langs ";\n"
 155
 156 print "const struct cl_option cl_options[] =\n{"
 157
 158 j = 0
 159 for (i = 0; i < n_opts; i++) {
 160         back_chain[i] = "N_OPTS";
 161         indices[opts[i]] = j;
 162         # Combine the flags of identical switches.  Switches
 163         # appear many times if they are handled by many front
 164         # ends, for example.
 165         while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
 166                 flags[i + 1] = flags[i] " " flags[i + 1];
 167                 if (help[i + 1] == "")
 168                         help[i + 1] = help[i]
 169                 else if (help[i] != "" && help[i + 1] != help[i])
 170                         print "warning: multiple different help strings for " \
 171                                 opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \
 172                                 | "cat 1>&2"
 173                 i++;
 174                 back_chain[i] = "N_OPTS";
 175                 indices[opts[i]] = j;
 176         }
 177         j++;
 178 }
 179
 180 for (i = 0; i < n_opts; i++) {
 181         # With identical flags, pick only the last one.  The
 182         # earlier loop ensured that it has all flags merged,
 183         # and a nonempty help text if one of the texts was nonempty.
 184         while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
 185                 i++;
 186         }
 187
 188         len = length (opts[i]);
 189         enum = opt_enum(opts[i])
 190
 191         # If this switch takes joined arguments, back-chain all
 192         # subsequent switches to it for which it is a prefix.  If
 193         # a later switch S is a longer prefix of a switch T, T
 194         # will be back-chained to S in a later iteration of this
 195         # for() loop, which is what we want.
 196         if (flag_set_p("Joined.*", flags[i])) {
 197                 for (j = i + 1; j < n_opts; j++) {
 198                         if (substr (opts[j], 1, len) != opts[i])
 199                                 break;
 200                         back_chain[j] = enum;
 201                 }
 202         }
 203
 204         s = substr("                                  ", length (opts[i]))
 205         if (i + 1 == n_opts)
 206                 comma = ""
 207
 208         if (help[i] == "")
 209                 hlp = "0"
 210         else
 211                 hlp = quote help[i] quote;
 212
 213         missing_arg_error = opt_args("MissingArgError", flags[i])
 214         if (missing_arg_error == "")
 215                 missing_arg_error = "0"
 216         else
 217                 missing_arg_error = quote missing_arg_error quote
 218
 219
 220         warn_message = opt_args("Warn", flags[i])
 221         if (warn_message == "")
 222                 warn_message = "0"
 223         else
 224                 warn_message = quote warn_message quote
 225
 226         alias_arg = opt_args("Alias", flags[i])
 227         if (alias_arg == "") {
 228                 if (flag_set_p("Ignore", flags[i]))
 229                         alias_data = "NULL, NULL, OPT_SPECIAL_ignore"
 230                 else
 231                         alias_data = "NULL, NULL, N_OPTS"
 232         } else {
 233                 alias_opt = nth_arg(0, alias_arg)
 234                 alias_posarg = nth_arg(1, alias_arg)
 235                 alias_negarg = nth_arg(2, alias_arg)
 236
 237                 if (var_ref(opts[i], flags[i]) != "-1")
 238                         print "#error Alias setting variable"
 239
 240                 if (alias_posarg != "" && alias_negarg == "") {
 241                         if (!flag_set_p("RejectNegative", flags[i]) \
 242                             && opts[i] ~ "^[Wfm]")
 243                                 print "#error Alias with single argument " \
 244                                         "allowing negative form"
 245                 }
 246
 247                 alias_opt = opt_enum(alias_opt)
 248                 if (alias_posarg == "")
 249                         alias_posarg = "NULL"
 250                 else
 251                         alias_posarg = quote alias_posarg quote
 252                 if (alias_negarg == "")
 253                         alias_negarg = "NULL"
 254                 else
 255                         alias_negarg = quote alias_negarg quote
 256                 alias_data = alias_posarg ", " alias_negarg ", " alias_opt
 257         }
 258
 259         neg = opt_args("Negative", flags[i]);
 260         if (neg != "")
 261                 idx = indices[neg]
 262         else {
 263                 if (flag_set_p("RejectNegative", flags[i]))
 264                         idx = -1;
 265                 else {
 266                         if (opts[i] ~ "^[Wfm]")
 267                                 idx = indices[opts[i]];
 268                         else
 269                                 idx = -1;
 270                 }
 271         }
 272         # Split the printf after %u to work around an ia64-hp-hpux11.23
 273         # awk bug.
 274         printf("  { %c-%s%c,\n    %s,\n    %s,\n    %s,\n    %s, %s, %u,",
 275                quote, opts[i], quote, hlp, missing_arg_error, warn_message,
 276                alias_data, back_chain[i], len)
 277         printf(" %d,\n", idx)
 278         condition = opt_args("Condition", flags[i])
 279         cl_flags = switch_flags(flags[i])
 280         if (condition != "")
 281                 printf("#if %s\n" \
 282                        "    %s,\n" \
 283                        "#else\n" \
 284                        "    CL_DISABLED,\n" \
 285                        "#endif\n",
 286                        condition, cl_flags, cl_flags)
 287         else
 288                 printf("    %s,\n", cl_flags)
 289         printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),
 290                var_set(flags[i]), comma)
 291 }
 292
 293 print "};"
 294
 295 print "";
 296 print "#if !defined(GCC_DRIVER) && !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)"
 297 print "";
 298 print "/* Save optimization variables into a structure.  */"
 299 print "void";
 300 print "cl_optimization_save (struct cl_optimization *ptr, struct gcc_options *opts)";
 301 print "{";
 302
 303 n_opt_char = 2;
 304 n_opt_short = 0;
 305 n_opt_int = 0;
 306 n_opt_other = 0;
 307 var_opt_char[0] = "optimize";
 308 var_opt_char[1] = "optimize_size";
 309 var_opt_range["optimize"] = "0, 255";
 310 var_opt_range["optimize_size"] = "0, 255";
 311
 312 # Sort by size to mimic how the structure is laid out to be friendlier to the
 313 # cache.
 314
 315 for (i = 0; i < n_opts; i++) {
 316         if (flag_set_p("Optimization", flags[i])) {
 317                 name = var_name(flags[i])
 318                 if(name == "")
 319                         continue;
 320
 321                 if(name in var_opt_seen)
 322                         continue;
 323
 324                 var_opt_seen[name]++;
 325                 otype = var_type_struct(flags[i]);
 326                 if (otype ~ "^((un)?signed +)?int *$")
 327                         var_opt_int[n_opt_int++] = name;
 328
 329                 else if (otype ~ "^((un)?signed +)?short *$")
 330                         var_opt_short[n_opt_short++] = name;
 331
 332                 else if (otype ~ "^((un)?signed +)?char *$") {
 333                         var_opt_char[n_opt_char++] = name;
 334                         if (otype ~ "^unsigned +char *$")
 335                                 var_opt_range[name] = "0, 255"
 336                         else if (otype ~ "^signed +char *$")
 337                                 var_opt_range[name] = "-128, 127"
 338                 }
 339                 else
 340                         var_opt_other[n_opt_other++] = name;
 341         }
 342 }
 343
 344 for (i = 0; i < n_opt_char; i++) {
 345         name = var_opt_char[i];
 346         if (var_opt_range[name] != "")
 347                 print "  gcc_assert (IN_RANGE (opts->x_" name ", " var_opt_range[name] "));";
 348 }
 349
 350 print "";
 351 for (i = 0; i < n_opt_other; i++) {
 352         print "  ptr->x_" var_opt_other[i] " = opts->x_" var_opt_other[i] ";";
 353 }
 354
 355 for (i = 0; i < n_opt_int; i++) {
 356         print "  ptr->x_" var_opt_int[i] " = opts->x_" var_opt_int[i] ";";
 357 }
 358
 359 for (i = 0; i < n_opt_short; i++) {
 360         print "  ptr->x_" var_opt_short[i] " = opts->x_" var_opt_short[i] ";";
 361 }
 362
 363 for (i = 0; i < n_opt_char; i++) {
 364         print "  ptr->x_" var_opt_char[i] " = opts->x_" var_opt_char[i] ";";
 365 }
 366
 367 print "}";
 368
 369 print "";
 370 print "/* Restore optimization options from a structure.  */";
 371 print "void";
 372 print "cl_optimization_restore (struct gcc_options *opts, struct cl_optimization *ptr)";
 373 print "{";
 374
 375 for (i = 0; i < n_opt_other; i++) {
 376         print "  opts->x_" var_opt_other[i] " = ptr->x_" var_opt_other[i] ";";
 377 }
 378
 379 for (i = 0; i < n_opt_int; i++) {
 380         print "  opts->x_" var_opt_int[i] " = ptr->x_" var_opt_int[i] ";";
 381 }
 382
 383 for (i = 0; i < n_opt_short; i++) {
 384         print "  opts->x_" var_opt_short[i] " = ptr->x_" var_opt_short[i] ";";
 385 }
 386
 387 for (i = 0; i < n_opt_char; i++) {
 388         print "  opts->x_" var_opt_char[i] " = ptr->x_" var_opt_char[i] ";";
 389 }
 390
 391 print "  targetm.override_options_after_change ();";
 392 print "}";
 393
 394 print "";
 395 print "/* Print optimization options from a structure.  */";
 396 print "void";
 397 print "cl_optimization_print (FILE *file,";
 398 print "                       int indent_to,";
 399 print "                       struct cl_optimization *ptr)";
 400 print "{";
 401
 402 print "  fputs (\"\\n\", file);";
 403 for (i = 0; i < n_opt_other; i++) {
 404         print "  if (ptr->x_" var_opt_other[i] ")";
 405         print "    fprintf (file, \"%*s%s (%#lx)\\n\",";
 406         print "             indent_to, \"\",";
 407         print "             \"" var_opt_other[i] "\",";
 408         print "             (unsigned long)ptr->x_" var_opt_other[i] ");";
 409         print "";
 410 }
 411
 412 for (i = 0; i < n_opt_int; i++) {
 413         print "  if (ptr->x_" var_opt_int[i] ")";
 414         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 415         print "             indent_to, \"\",";
 416         print "             \"" var_opt_int[i] "\",";
 417         print "             ptr->x_" var_opt_int[i] ");";
 418         print "";
 419 }
 420
 421 for (i = 0; i < n_opt_short; i++) {
 422         print "  if (ptr->x_" var_opt_short[i] ")";
 423         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 424         print "             indent_to, \"\",";
 425         print "             \"" var_opt_short[i] "\",";
 426         print "             ptr->x_" var_opt_short[i] ");";
 427         print "";
 428 }
 429
 430 for (i = 0; i < n_opt_char; i++) {
 431         print "  if (ptr->x_" var_opt_char[i] ")";
 432         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 433         print "             indent_to, \"\",";
 434         print "             \"" var_opt_char[i] "\",";
 435         print "             ptr->x_" var_opt_char[i] ");";
 436         print "";
 437 }
 438
 439 print "}";
 440
 441 print "";
 442 print "/* Save selected option variables into a structure.  */"
 443 print "void";
 444 print "cl_target_option_save (struct cl_target_option *ptr, struct gcc_options *opts)";
 445 print "{";
 446
 447 n_target_char = 0;
 448 n_target_short = 0;
 449 n_target_int = 0;
 450 n_target_other = 0;
 451
 452 if (have_save) {
 453         for (i = 0; i < n_opts; i++) {
 454                 if (flag_set_p("Save", flags[i])) {
 455                         name = var_name(flags[i])
 456                         if(name == "")
 457                                 name = "target_flags";
 458
 459                         if(name in var_save_seen)
 460                                 continue;
 461
 462                         var_save_seen[name]++;
 463                         otype = var_type_struct(flags[i])
 464                         if (otype ~ "^((un)?signed +)?int *$")
 465                                 var_target_int[n_target_int++] = name;
 466
 467                         else if (otype ~ "^((un)?signed +)?short *$")
 468                                 var_target_short[n_target_short++] = name;
 469
 470                         else if (otype ~ "^((un)?signed +)?char *$") {
 471                                 var_target_char[n_target_char++] = name;
 472                                 if (otype ~ "^unsigned +char *$")
 473                                         var_target_range[name] = "0, 255"
 474                                 else if (otype ~ "^signed +char *$")
 475                                         var_target_range[name] = "-128, 127"
 476                         }
 477                         else
 478                                 var_target_other[n_target_other++] = name;
 479                 }
 480         }
 481 } else {
 482         var_target_int[n_target_int++] = "target_flags";
 483 }
 484
 485 have_assert = 0;
 486 for (i = 0; i < n_target_char; i++) {
 487         name = var_target_char[i];
 488         if (var_target_range[name] != "") {
 489                 have_assert = 1;
 490                 print "  gcc_assert (IN_RANGE (opts->x_" name ", " var_target_range[name] "));";
 491         }
 492 }
 493
 494 if (have_assert)
 495         print "";
 496
 497 print "  if (targetm.target_option.save)";
 498 print "    targetm.target_option.save (ptr);";
 499 print "";
 500
 501 for (i = 0; i < n_target_other; i++) {
 502         print "  ptr->x_" var_target_other[i] " = opts->x_" var_target_other[i] ";";
 503 }
 504
 505 for (i = 0; i < n_target_int; i++) {
 506         print "  ptr->x_" var_target_int[i] " = opts->x_" var_target_int[i] ";";
 507 }
 508
 509 for (i = 0; i < n_target_short; i++) {
 510         print "  ptr->x_" var_target_short[i] " = opts->x_" var_target_short[i] ";";
 511 }
 512
 513 for (i = 0; i < n_target_char; i++) {
 514         print "  ptr->x_" var_target_char[i] " = opts->x_" var_target_char[i] ";";
 515 }
 516
 517 print "}";
 518
 519 print "";
 520 print "/* Restore selected current options from a structure.  */";
 521 print "void";
 522 print "cl_target_option_restore (struct gcc_options *opts, struct cl_target_option *ptr)";
 523 print "{";
 524
 525 for (i = 0; i < n_target_other; i++) {
 526         print "  opts->x_" var_target_other[i] " = ptr->x_" var_target_other[i] ";";
 527 }
 528
 529 for (i = 0; i < n_target_int; i++) {
 530         print "  opts->x_" var_target_int[i] " = ptr->x_" var_target_int[i] ";";
 531 }
 532
 533 for (i = 0; i < n_target_short; i++) {
 534         print "  opts->x_" var_target_short[i] " = ptr->x_" var_target_short[i] ";";
 535 }
 536
 537 for (i = 0; i < n_target_char; i++) {
 538         print "  opts->x_" var_target_char[i] " = ptr->x_" var_target_char[i] ";";
 539 }
 540
 541 # This must occur after the normal variables in case the code depends on those
 542 # variables.
 543 print "";
 544 print "  if (targetm.target_option.restore)";
 545 print "    targetm.target_option.restore (ptr);";
 546
 547 print "}";
 548
 549 print "";
 550 print "/* Print optimization options from a structure.  */";
 551 print "void";
 552 print "cl_target_option_print (FILE *file,";
 553 print "                        int indent,";
 554 print "                        struct cl_target_option *ptr)";
 555 print "{";
 556
 557 print "  fputs (\"\\n\", file);";
 558 for (i = 0; i < n_target_other; i++) {
 559         print "  if (ptr->x_" var_target_other[i] ")";
 560         print "    fprintf (file, \"%*s%s (%#lx)\\n\",";
 561         print "             indent, \"\",";
 562         print "             \"" var_target_other[i] "\",";
 563         print "             (unsigned long)ptr->x_" var_target_other[i] ");";
 564         print "";
 565 }
 566
 567 for (i = 0; i < n_target_int; i++) {
 568         print "  if (ptr->x_" var_target_int[i] ")";
 569         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 570         print "             indent, \"\",";
 571         print "             \"" var_target_int[i] "\",";
 572         print "             ptr->x_" var_target_int[i] ");";
 573         print "";
 574 }
 575
 576 for (i = 0; i < n_target_short; i++) {
 577         print "  if (ptr->x_" var_target_short[i] ")";
 578         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 579         print "             indent, \"\",";
 580         print "             \"" var_target_short[i] "\",";
 581         print "             ptr->x_" var_target_short[i] ");";
 582         print "";
 583 }
 584
 585 for (i = 0; i < n_target_char; i++) {
 586         print "  if (ptr->x_" var_target_char[i] ")";
 587         print "    fprintf (file, \"%*s%s (%#x)\\n\",";
 588         print "             indent, \"\",";
 589         print "             \"" var_target_char[i] "\",";
 590         print "             ptr->x_" var_target_char[i] ");";
 591         print "";
 592 }
 593
 594 print "";
 595 print "  if (targetm.target_option.print)";
 596 print "    targetm.target_option.print (file, indent, ptr);";
 597
 598 print "}";
 599 print "#endif";
 600
 601 }