Mercurial > hg > CbC > CbC_gcc
annotate gcc/toplev.c @ 37:d096b2ff82d9
Added tag gcc.4.4.2 for changeset 855418dad1a3
| author | e075725 |
|---|---|
| date | Tue, 22 Dec 2009 21:52:56 +0900 |
| parents | 58ad6c70ea60 |
| children | 77e2b8dfacca |
| rev | line source |
|---|---|
| 0 | 1 /* Top level of GCC compilers (cc1, cc1plus, etc.) |
| 2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
| 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 | |
| 4 Free Software Foundation, Inc. | |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 /* This is the top level of cc1/c++. | |
| 23 It parses command args, opens files, invokes the various passes | |
| 24 in the proper order, and counts the time used by each. | |
| 25 Error messages and low-level interface to malloc also handled here. */ | |
| 26 | |
| 27 #include "config.h" | |
| 28 #undef FLOAT /* This is for hpux. They should change hpux. */ | |
| 29 #undef FFS /* Some systems define this in param.h. */ | |
| 30 #include "system.h" | |
| 31 #include "coretypes.h" | |
| 32 #include "tm.h" | |
| 33 #include <signal.h> | |
| 34 | |
| 35 #ifdef HAVE_SYS_RESOURCE_H | |
| 36 # include <sys/resource.h> | |
| 37 #endif | |
| 38 | |
| 39 #ifdef HAVE_SYS_TIMES_H | |
| 40 # include <sys/times.h> | |
| 41 #endif | |
| 42 | |
| 43 #include "line-map.h" | |
| 44 #include "input.h" | |
| 45 #include "tree.h" | |
| 46 #include "version.h" | |
| 47 #include "rtl.h" | |
| 48 #include "tm_p.h" | |
| 49 #include "flags.h" | |
| 50 #include "insn-attr.h" | |
| 51 #include "insn-config.h" | |
| 52 #include "insn-flags.h" | |
| 53 #include "hard-reg-set.h" | |
| 54 #include "recog.h" | |
| 55 #include "output.h" | |
| 56 #include "except.h" | |
| 57 #include "function.h" | |
| 58 #include "toplev.h" | |
| 59 #include "expr.h" | |
| 60 #include "basic-block.h" | |
| 61 #include "intl.h" | |
| 62 #include "ggc.h" | |
| 63 #include "graph.h" | |
| 64 #include "regs.h" | |
| 65 #include "timevar.h" | |
| 66 #include "diagnostic.h" | |
| 67 #include "params.h" | |
| 68 #include "reload.h" | |
| 69 #include "ira.h" | |
| 70 #include "dwarf2asm.h" | |
| 71 #include "integrate.h" | |
| 72 #include "real.h" | |
| 73 #include "debug.h" | |
| 74 #include "target.h" | |
| 75 #include "langhooks.h" | |
| 76 #include "cfglayout.h" | |
| 77 #include "cfgloop.h" | |
| 78 #include "hosthooks.h" | |
| 79 #include "cgraph.h" | |
| 80 #include "opts.h" | |
| 81 #include "coverage.h" | |
| 82 #include "value-prof.h" | |
| 83 #include "alloc-pool.h" | |
| 84 #include "tree-mudflap.h" | |
| 85 #include "tree-pass.h" | |
| 86 #include "gimple.h" | |
| 87 | |
| 88 #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
| 89 #include "dwarf2out.h" | |
| 90 #endif | |
| 91 | |
| 92 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) | |
| 93 #include "dbxout.h" | |
| 94 #endif | |
| 95 | |
| 96 #ifdef SDB_DEBUGGING_INFO | |
| 97 #include "sdbout.h" | |
| 98 #endif | |
| 99 | |
| 100 #ifdef XCOFF_DEBUGGING_INFO | |
| 101 #include "xcoffout.h" /* Needed for external data | |
| 102 declarations for e.g. AIX 4.x. */ | |
| 103 #endif | |
| 104 | |
| 105 static void general_init (const char *); | |
| 106 static void do_compile (void); | |
| 107 static void process_options (void); | |
| 108 static void backend_init (void); | |
| 109 static int lang_dependent_init (const char *); | |
| 110 static void init_asm_output (const char *); | |
| 111 static void finalize (void); | |
| 112 | |
| 113 static void crash_signal (int) ATTRIBUTE_NORETURN; | |
| 114 static void setup_core_dumping (void); | |
| 115 static void compile_file (void); | |
| 116 | |
| 117 /* Nonzero to dump debug info whilst parsing (-dy option). */ | |
| 118 static int set_yydebug; | |
| 119 | |
| 120 /* True if we don't need a backend (e.g. preprocessing only). */ | |
| 121 static bool no_backend; | |
| 122 | |
| 123 /* Length of line when printing switch values. */ | |
| 124 #define MAX_LINE 75 | |
| 125 | |
| 126 /* Name of program invoked, sans directories. */ | |
| 127 | |
| 128 const char *progname; | |
| 129 | |
| 130 /* Copy of argument vector to toplev_main. */ | |
| 131 static const char **save_argv; | |
| 132 | |
| 133 /* Name of top-level original source file (what was input to cpp). | |
| 134 This comes from the #-command at the beginning of the actual input. | |
| 135 If there isn't any there, then this is the cc1 input file name. */ | |
| 136 | |
| 137 const char *main_input_filename; | |
| 138 | |
| 139 /* Used to enable -fvar-tracking, -fweb and -frename-registers according | |
| 140 to optimize and default_debug_hooks in process_options (). */ | |
| 141 #define AUTODETECT_VALUE 2 | |
| 142 | |
| 143 /* Current position in real source file. */ | |
| 144 | |
| 145 location_t input_location; | |
| 146 | |
| 147 struct line_maps *line_table; | |
| 148 | |
| 149 /* Name to use as base of names for dump output files. */ | |
| 150 | |
| 151 const char *dump_base_name; | |
| 152 | |
| 153 /* Name to use as a base for auxiliary output files. */ | |
| 154 | |
| 155 const char *aux_base_name; | |
| 156 | |
| 157 /* Prefix for profile data files */ | |
| 158 const char *profile_data_prefix; | |
| 159 | |
| 160 /* A mask of target_flags that includes bit X if X was set or cleared | |
| 161 on the command line. */ | |
| 162 | |
| 163 int target_flags_explicit; | |
| 164 | |
| 165 /* Debug hooks - dependent upon command line options. */ | |
| 166 | |
| 167 const struct gcc_debug_hooks *debug_hooks; | |
| 168 | |
| 169 /* Debug hooks - target default. */ | |
| 170 | |
| 171 static const struct gcc_debug_hooks *default_debug_hooks; | |
| 172 | |
| 173 /* Other flags saying which kinds of debugging dump have been requested. */ | |
| 174 | |
| 175 int rtl_dump_and_exit; | |
| 176 int flag_print_asm_name; | |
| 177 enum graph_dump_types graph_dump_format; | |
| 178 | |
| 179 /* Name for output file of assembly code, specified with -o. */ | |
| 180 | |
| 181 const char *asm_file_name; | |
| 182 | |
| 183 /* Nonzero means do optimizations. -O. | |
| 184 Particular numeric values stand for particular amounts of optimization; | |
| 185 thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
| 186 ones are not controlled directly by this variable. Instead, they are | |
| 187 controlled by individual `flag_...' variables that are defaulted | |
| 188 based on this variable. */ | |
| 189 | |
| 190 int optimize = 0; | |
| 191 | |
| 192 /* Nonzero means optimize for size. -Os. | |
| 193 The only valid values are zero and nonzero. When optimize_size is | |
| 194 nonzero, optimize defaults to 2, but certain individual code | |
| 195 bloating optimizations are disabled. */ | |
| 196 | |
| 197 int optimize_size = 0; | |
| 198 | |
| 199 /* The FUNCTION_DECL for the function currently being compiled, | |
| 200 or 0 if between functions. */ | |
| 201 tree current_function_decl; | |
| 202 | |
| 203 /* Set to the FUNC_BEGIN label of the current function, or NULL | |
| 204 if none. */ | |
| 205 const char * current_function_func_begin_label; | |
| 206 | |
| 207 /* Nonzero means to collect statistics which might be expensive | |
| 208 and to print them when we are done. */ | |
| 209 int flag_detailed_statistics = 0; | |
| 210 | |
| 211 /* A random sequence of characters, unless overridden by user. */ | |
| 212 static const char *flag_random_seed; | |
| 213 | |
| 214 /* A local time stamp derived from the time of compilation. It will be | |
| 215 zero if the system cannot provide a time. It will be -1u, if the | |
| 216 user has specified a particular random seed. */ | |
| 217 unsigned local_tick; | |
| 218 | |
| 219 /* -f flags. */ | |
| 220 | |
| 221 /* Nonzero means `char' should be signed. */ | |
| 222 | |
| 223 int flag_signed_char; | |
| 224 | |
| 225 /* Nonzero means give an enum type only as many bytes as it needs. A value | |
| 226 of 2 means it has not yet been initialized. */ | |
| 227 | |
| 228 int flag_short_enums; | |
| 229 | |
| 230 /* Nonzero if structures and unions should be returned in memory. | |
| 231 | |
| 232 This should only be defined if compatibility with another compiler or | |
| 233 with an ABI is needed, because it results in slower code. */ | |
| 234 | |
| 235 #ifndef DEFAULT_PCC_STRUCT_RETURN | |
| 236 #define DEFAULT_PCC_STRUCT_RETURN 1 | |
| 237 #endif | |
| 238 | |
| 239 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ | |
| 240 | |
| 241 int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; | |
| 242 | |
| 243 /* 0 means straightforward implementation of complex divide acceptable. | |
| 244 1 means wide ranges of inputs must work for complex divide. | |
| 245 2 means C99-like requirements for complex multiply and divide. */ | |
| 246 | |
| 247 int flag_complex_method = 1; | |
| 248 | |
| 249 /* Nonzero means we should be saving declaration info into a .X file. */ | |
| 250 | |
| 251 int flag_gen_aux_info = 0; | |
| 252 | |
| 253 /* Specified name of aux-info file. */ | |
| 254 | |
| 255 const char *aux_info_file_name; | |
| 256 | |
| 257 /* Nonzero if we are compiling code for a shared library, zero for | |
| 258 executable. */ | |
| 259 | |
| 260 int flag_shlib; | |
| 261 | |
| 262 /* Generate code for GNU or NeXT Objective-C runtime environment. */ | |
| 263 | |
| 264 #ifdef NEXT_OBJC_RUNTIME | |
| 265 int flag_next_runtime = 1; | |
| 266 #else | |
| 267 int flag_next_runtime = 0; | |
| 268 #endif | |
| 269 | |
| 270 /* Set to the default thread-local storage (tls) model to use. */ | |
| 271 | |
| 272 enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
| 273 | |
| 274 /* Set the default region and algorithm for the integrated register | |
| 275 allocator. */ | |
| 276 | |
| 277 enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB; | |
| 278 enum ira_region flag_ira_region = IRA_REGION_MIXED; | |
| 279 | |
| 280 /* Set the default value for -fira-verbose. */ | |
| 281 | |
| 282 unsigned int flag_ira_verbose = 5; | |
| 283 | |
| 284 /* Nonzero means change certain warnings into errors. | |
| 285 Usually these are warnings about failure to conform to some standard. */ | |
| 286 | |
| 287 int flag_pedantic_errors = 0; | |
| 288 | |
| 289 /* Nonzero means make permerror produce warnings instead of errors. */ | |
| 290 | |
| 291 int flag_permissive = 0; | |
| 292 | |
| 293 /* -dA causes debug commentary information to be produced in | |
| 294 the generated assembly code (to make it more readable). This option | |
| 295 is generally only of use to those who actually need to read the | |
| 296 generated assembly code (perhaps while debugging the compiler itself). | |
| 297 Currently, this switch is only used by dwarfout.c; however, it is intended | |
| 298 to be a catchall for printing debug information in the assembler file. */ | |
| 299 | |
| 300 int flag_debug_asm = 0; | |
| 301 | |
| 302 /* -dP causes the rtl to be emitted as a comment in assembly. */ | |
| 303 | |
| 304 int flag_dump_rtl_in_asm = 0; | |
| 305 | |
| 306 /* When non-NULL, indicates that whenever space is allocated on the | |
| 307 stack, the resulting stack pointer must not pass this | |
| 308 address---that is, for stacks that grow downward, the stack pointer | |
| 309 must always be greater than or equal to this address; for stacks | |
| 310 that grow upward, the stack pointer must be less than this address. | |
| 311 At present, the rtx may be either a REG or a SYMBOL_REF, although | |
| 312 the support provided depends on the backend. */ | |
| 313 rtx stack_limit_rtx; | |
| 314 | |
| 315 /* Nonzero if we should track variables. When | |
| 316 flag_var_tracking == AUTODETECT_VALUE it will be set according | |
| 317 to optimize, debug_info_level and debug_hooks in process_options (). */ | |
| 318 int flag_var_tracking = AUTODETECT_VALUE; | |
| 319 | |
| 320 /* Type of stack check. */ | |
| 321 enum stack_check_type flag_stack_check = NO_STACK_CHECK; | |
| 322 | |
| 323 /* True if the user has tagged the function with the 'section' | |
| 324 attribute. */ | |
| 325 | |
| 326 bool user_defined_section_attribute = false; | |
| 327 | |
| 328 /* Values of the -falign-* flags: how much to align labels in code. | |
| 329 0 means `use default', 1 means `don't align'. | |
| 330 For each variable, there is an _log variant which is the power | |
| 331 of two not less than the variable, for .align output. */ | |
| 332 | |
| 333 int align_loops_log; | |
| 334 int align_loops_max_skip; | |
| 335 int align_jumps_log; | |
| 336 int align_jumps_max_skip; | |
| 337 int align_labels_log; | |
| 338 int align_labels_max_skip; | |
| 339 int align_functions_log; | |
| 340 | |
| 341 typedef struct | |
| 342 { | |
| 343 const char *const string; | |
| 344 int *const variable; | |
| 345 const int on_value; | |
| 346 } | |
| 347 lang_independent_options; | |
| 348 | |
| 349 /* Nonzero if subexpressions must be evaluated from left-to-right. */ | |
| 350 int flag_evaluation_order = 0; | |
| 351 | |
| 352 /* The user symbol prefix after having resolved same. */ | |
| 353 const char *user_label_prefix; | |
| 354 | |
| 355 static const param_info lang_independent_params[] = { | |
| 356 #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ | |
| 357 { OPTION, DEFAULT, false, MIN, MAX, HELP }, | |
| 358 #include "params.def" | |
| 359 #undef DEFPARAM | |
| 360 { NULL, 0, false, 0, 0, NULL } | |
| 361 }; | |
| 362 | |
| 363 /* Output files for assembler code (real compiler output) | |
| 364 and debugging dumps. */ | |
| 365 | |
| 366 FILE *asm_out_file; | |
| 367 FILE *aux_info_file; | |
| 368 FILE *dump_file = NULL; | |
| 369 const char *dump_file_name; | |
| 370 | |
| 371 /* The current working directory of a translation. It's generally the | |
| 372 directory from which compilation was initiated, but a preprocessed | |
| 373 file may specify the original directory in which it was | |
| 374 created. */ | |
| 375 | |
| 376 static const char *src_pwd; | |
| 377 | |
| 378 /* Initialize src_pwd with the given string, and return true. If it | |
| 379 was already initialized, return false. As a special case, it may | |
| 380 be called with a NULL argument to test whether src_pwd has NOT been | |
| 381 initialized yet. */ | |
| 382 | |
| 383 bool | |
| 384 set_src_pwd (const char *pwd) | |
| 385 { | |
| 386 if (src_pwd) | |
| 387 { | |
| 388 if (strcmp (src_pwd, pwd) == 0) | |
| 389 return true; | |
| 390 else | |
| 391 return false; | |
| 392 } | |
| 393 | |
| 394 src_pwd = xstrdup (pwd); | |
| 395 return true; | |
| 396 } | |
| 397 | |
| 398 /* Return the directory from which the translation unit was initiated, | |
| 399 in case set_src_pwd() was not called before to assign it a | |
| 400 different value. */ | |
| 401 | |
| 402 const char * | |
| 403 get_src_pwd (void) | |
| 404 { | |
| 405 if (! src_pwd) | |
| 406 { | |
| 407 src_pwd = getpwd (); | |
| 408 if (!src_pwd) | |
| 409 src_pwd = "."; | |
| 410 } | |
| 411 | |
| 412 return src_pwd; | |
| 413 } | |
| 414 | |
| 415 /* Called when the start of a function definition is parsed, | |
| 416 this function prints on stderr the name of the function. */ | |
| 417 void | |
| 418 announce_function (tree decl) | |
| 419 { | |
| 420 if (!quiet_flag) | |
| 421 { | |
| 422 if (rtl_dump_and_exit) | |
| 423 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); | |
| 424 else | |
| 425 fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2)); | |
| 426 fflush (stderr); | |
| 427 pp_needs_newline (global_dc->printer) = true; | |
| 428 diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); | |
| 429 } | |
| 430 } | |
| 431 | |
| 432 /* Initialize local_tick with the time of day, or -1 if | |
| 433 flag_random_seed is set. */ | |
| 434 | |
| 435 static void | |
| 436 init_local_tick (void) | |
| 437 { | |
| 438 if (!flag_random_seed) | |
| 439 { | |
| 440 /* Get some more or less random data. */ | |
| 441 #ifdef HAVE_GETTIMEOFDAY | |
| 442 { | |
| 443 struct timeval tv; | |
| 444 | |
| 445 gettimeofday (&tv, NULL); | |
| 446 local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
| 447 } | |
| 448 #else | |
| 449 { | |
| 450 time_t now = time (NULL); | |
| 451 | |
| 452 if (now != (time_t)-1) | |
| 453 local_tick = (unsigned) now; | |
| 454 } | |
| 455 #endif | |
| 456 } | |
| 457 else | |
| 458 local_tick = -1; | |
| 459 } | |
| 460 | |
| 461 /* Set up a default flag_random_seed and local_tick, unless the user | |
| 462 already specified one. Must be called after init_local_tick. */ | |
| 463 | |
| 464 static void | |
| 465 init_random_seed (void) | |
| 466 { | |
| 467 unsigned HOST_WIDE_INT value; | |
| 468 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
| 469 | |
| 470 value = local_tick ^ getpid (); | |
| 471 | |
| 472 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
| 473 flag_random_seed = random_seed; | |
| 474 } | |
| 475 | |
| 476 /* Obtain the random_seed string. Unless NOINIT, initialize it if | |
| 477 it's not provided in the command line. */ | |
| 478 | |
| 479 const char * | |
| 480 get_random_seed (bool noinit) | |
| 481 { | |
| 482 if (!flag_random_seed && !noinit) | |
| 483 init_random_seed (); | |
| 484 return flag_random_seed; | |
| 485 } | |
| 486 | |
| 487 /* Modify the random_seed string to VAL. Return its previous | |
| 488 value. */ | |
| 489 | |
| 490 const char * | |
| 491 set_random_seed (const char *val) | |
| 492 { | |
| 493 const char *old = flag_random_seed; | |
| 494 flag_random_seed = val; | |
| 495 return old; | |
| 496 } | |
| 497 | |
| 498 /* Decode the string P as an integral parameter. | |
| 499 If the string is indeed an integer return its numeric value else | |
| 500 issue an Invalid Option error for the option PNAME and return DEFVAL. | |
| 501 If PNAME is zero just return DEFVAL, do not call error. */ | |
| 502 | |
| 503 int | |
| 504 read_integral_parameter (const char *p, const char *pname, const int defval) | |
| 505 { | |
| 506 const char *endp = p; | |
| 507 | |
| 508 while (*endp) | |
| 509 { | |
| 510 if (ISDIGIT (*endp)) | |
| 511 endp++; | |
| 512 else | |
| 513 break; | |
| 514 } | |
| 515 | |
| 516 if (*endp != 0) | |
| 517 { | |
| 518 if (pname != 0) | |
| 519 error ("invalid option argument %qs", pname); | |
| 520 return defval; | |
| 521 } | |
| 522 | |
| 523 return atoi (p); | |
| 524 } | |
| 525 | |
| 526 /* When compiling with a recent enough GCC, we use the GNU C "extern inline" | |
| 527 for floor_log2 and exact_log2; see toplev.h. That construct, however, | |
| 528 conflicts with the ISO C++ One Definition Rule. */ | |
| 529 | |
| 530 #if GCC_VERSION < 3004 || !defined (__cplusplus) | |
| 531 | |
| 532 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
| 533 If X is 0, return -1. */ | |
| 534 | |
| 535 int | |
| 536 floor_log2 (unsigned HOST_WIDE_INT x) | |
| 537 { | |
| 538 int t = 0; | |
| 539 | |
| 540 if (x == 0) | |
| 541 return -1; | |
| 542 | |
| 543 #ifdef CLZ_HWI | |
| 544 t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); | |
| 545 #else | |
| 546 if (HOST_BITS_PER_WIDE_INT > 64) | |
| 547 if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) | |
| 548 t += 64; | |
| 549 if (HOST_BITS_PER_WIDE_INT > 32) | |
| 550 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) | |
| 551 t += 32; | |
| 552 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) | |
| 553 t += 16; | |
| 554 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) | |
| 555 t += 8; | |
| 556 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) | |
| 557 t += 4; | |
| 558 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) | |
| 559 t += 2; | |
| 560 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) | |
| 561 t += 1; | |
| 562 #endif | |
| 563 | |
| 564 return t; | |
| 565 } | |
| 566 | |
| 567 /* Return the logarithm of X, base 2, considering X unsigned, | |
| 568 if X is a power of 2. Otherwise, returns -1. */ | |
| 569 | |
| 570 int | |
| 571 exact_log2 (unsigned HOST_WIDE_INT x) | |
| 572 { | |
| 573 if (x != (x & -x)) | |
| 574 return -1; | |
| 575 #ifdef CTZ_HWI | |
| 576 return x ? CTZ_HWI (x) : -1; | |
| 577 #else | |
| 578 return floor_log2 (x); | |
| 579 #endif | |
| 580 } | |
| 581 | |
| 582 #endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */ | |
| 583 | |
| 584 /* Handler for fatal signals, such as SIGSEGV. These are transformed | |
| 585 into ICE messages, which is much more user friendly. In case the | |
| 586 error printer crashes, reset the signal to prevent infinite recursion. */ | |
| 587 | |
| 588 static void | |
| 589 crash_signal (int signo) | |
| 590 { | |
| 591 signal (signo, SIG_DFL); | |
| 592 | |
| 593 /* If we crashed while processing an ASM statement, then be a little more | |
| 594 graceful. It's most likely the user's fault. */ | |
| 595 if (this_is_asm_operands) | |
| 596 { | |
| 597 output_operand_lossage ("unrecoverable error"); | |
| 598 exit (FATAL_EXIT_CODE); | |
| 599 } | |
| 600 | |
| 601 internal_error ("%s", strsignal (signo)); | |
| 602 } | |
| 603 | |
| 604 /* Arrange to dump core on error. (The regular error message is still | |
| 605 printed first, except in the case of abort().) */ | |
| 606 | |
| 607 static void | |
| 608 setup_core_dumping (void) | |
| 609 { | |
| 610 #ifdef SIGABRT | |
| 611 signal (SIGABRT, SIG_DFL); | |
| 612 #endif | |
| 613 #if defined(HAVE_SETRLIMIT) | |
| 614 { | |
| 615 struct rlimit rlim; | |
| 616 if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
| 617 fatal_error ("getting core file size maximum limit: %m"); | |
| 618 rlim.rlim_cur = rlim.rlim_max; | |
| 619 if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
| 620 fatal_error ("setting core file size limit to maximum: %m"); | |
| 621 } | |
| 622 #endif | |
| 623 diagnostic_abort_on_error (global_dc); | |
| 624 } | |
| 625 | |
| 626 | |
| 627 /* Strip off a legitimate source ending from the input string NAME of | |
| 628 length LEN. Rather than having to know the names used by all of | |
| 629 our front ends, we strip off an ending of a period followed by | |
| 630 up to five characters. (Java uses ".class".) */ | |
| 631 | |
| 632 void | |
| 633 strip_off_ending (char *name, int len) | |
| 634 { | |
| 635 int i; | |
| 636 for (i = 2; i < 6 && len > i; i++) | |
| 637 { | |
| 638 if (name[len - i] == '.') | |
| 639 { | |
| 640 name[len - i] = '\0'; | |
| 641 break; | |
| 642 } | |
| 643 } | |
| 644 } | |
| 645 | |
| 646 /* Output a quoted string. */ | |
| 647 | |
| 648 void | |
| 649 output_quoted_string (FILE *asm_file, const char *string) | |
| 650 { | |
| 651 #ifdef OUTPUT_QUOTED_STRING | |
| 652 OUTPUT_QUOTED_STRING (asm_file, string); | |
| 653 #else | |
| 654 char c; | |
| 655 | |
| 656 putc ('\"', asm_file); | |
| 657 while ((c = *string++) != 0) | |
| 658 { | |
| 659 if (ISPRINT (c)) | |
| 660 { | |
| 661 if (c == '\"' || c == '\\') | |
| 662 putc ('\\', asm_file); | |
| 663 putc (c, asm_file); | |
| 664 } | |
| 665 else | |
| 666 fprintf (asm_file, "\\%03o", (unsigned char) c); | |
| 667 } | |
| 668 putc ('\"', asm_file); | |
| 669 #endif | |
| 670 } | |
| 671 | |
| 672 /* Output a file name in the form wanted by System V. */ | |
| 673 | |
| 674 void | |
| 675 output_file_directive (FILE *asm_file, const char *input_name) | |
| 676 { | |
| 677 int len; | |
| 678 const char *na; | |
| 679 | |
| 680 if (input_name == NULL) | |
| 681 input_name = "<stdin>"; | |
| 682 else | |
| 683 input_name = remap_debug_filename (input_name); | |
| 684 | |
| 685 len = strlen (input_name); | |
| 686 na = input_name + len; | |
| 687 | |
| 688 /* NA gets INPUT_NAME sans directory names. */ | |
| 689 while (na > input_name) | |
| 690 { | |
| 691 if (IS_DIR_SEPARATOR (na[-1])) | |
| 692 break; | |
| 693 na--; | |
| 694 } | |
| 695 | |
| 696 #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
| 697 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
| 698 #else | |
| 699 fprintf (asm_file, "\t.file\t"); | |
| 700 output_quoted_string (asm_file, na); | |
| 701 fputc ('\n', asm_file); | |
| 702 #endif | |
| 703 } | |
| 704 | |
| 705 /* A subroutine of wrapup_global_declarations. We've come to the end of | |
| 706 the compilation unit. All deferred variables should be undeferred, | |
| 707 and all incomplete decls should be finalized. */ | |
| 708 | |
| 709 void | |
| 710 wrapup_global_declaration_1 (tree decl) | |
| 711 { | |
| 712 /* We're not deferring this any longer. Assignment is conditional to | |
| 713 avoid needlessly dirtying PCH pages. */ | |
| 714 if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
| 715 && DECL_DEFER_OUTPUT (decl) != 0) | |
| 716 DECL_DEFER_OUTPUT (decl) = 0; | |
| 717 | |
| 718 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
| 719 lang_hooks.finish_incomplete_decl (decl); | |
| 720 } | |
| 721 | |
| 722 /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
| 723 needs to be output. Return true if it is output. */ | |
| 724 | |
| 725 bool | |
| 726 wrapup_global_declaration_2 (tree decl) | |
| 727 { | |
| 728 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
| 729 return false; | |
| 730 | |
| 731 /* Don't write out static consts, unless we still need them. | |
| 732 | |
| 733 We also keep static consts if not optimizing (for debugging), | |
| 734 unless the user specified -fno-keep-static-consts. | |
| 735 ??? They might be better written into the debug information. | |
| 736 This is possible when using DWARF. | |
| 737 | |
| 738 A language processor that wants static constants to be always | |
| 739 written out (even if it is not used) is responsible for | |
| 740 calling rest_of_decl_compilation itself. E.g. the C front-end | |
| 741 calls rest_of_decl_compilation from finish_decl. | |
| 742 One motivation for this is that is conventional in some | |
| 743 environments to write things like: | |
| 744 static const char rcsid[] = "... version string ..."; | |
| 745 intending to force the string to be in the executable. | |
| 746 | |
| 747 A language processor that would prefer to have unneeded | |
| 748 static constants "optimized away" would just defer writing | |
| 749 them out until here. E.g. C++ does this, because static | |
| 750 constants are often defined in header files. | |
| 751 | |
| 752 ??? A tempting alternative (for both C and C++) would be | |
| 753 to force a constant to be written if and only if it is | |
| 754 defined in a main file, as opposed to an include file. */ | |
| 755 | |
| 756 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
| 757 { | |
| 758 struct varpool_node *node; | |
| 759 bool needed = true; | |
| 760 node = varpool_node (decl); | |
| 761 | |
| 762 if (node->finalized) | |
| 763 needed = false; | |
| 764 else if (node->alias) | |
| 765 needed = false; | |
| 766 else if (!cgraph_global_info_ready | |
| 767 && (TREE_USED (decl) | |
| 768 || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
| 769 /* needed */; | |
| 770 else if (node->needed) | |
| 771 /* needed */; | |
| 772 else if (DECL_COMDAT (decl)) | |
| 773 needed = false; | |
| 774 else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
| 775 && (optimize || !flag_keep_static_consts | |
| 776 || DECL_ARTIFICIAL (decl))) | |
| 777 needed = false; | |
| 778 | |
| 779 if (needed) | |
| 780 { | |
| 781 rest_of_decl_compilation (decl, 1, 1); | |
| 782 return true; | |
| 783 } | |
| 784 } | |
| 785 | |
| 786 return false; | |
| 787 } | |
| 788 | |
| 789 /* Do any final processing required for the declarations in VEC, of | |
| 790 which there are LEN. We write out inline functions and variables | |
| 791 that have been deferred until this point, but which are required. | |
| 792 Returns nonzero if anything was put out. */ | |
| 793 | |
| 794 bool | |
| 795 wrapup_global_declarations (tree *vec, int len) | |
| 796 { | |
| 797 bool reconsider, output_something = false; | |
| 798 int i; | |
| 799 | |
| 800 for (i = 0; i < len; i++) | |
| 801 wrapup_global_declaration_1 (vec[i]); | |
| 802 | |
| 803 /* Now emit any global variables or functions that we have been | |
| 804 putting off. We need to loop in case one of the things emitted | |
| 805 here references another one which comes earlier in the list. */ | |
| 806 do | |
| 807 { | |
| 808 reconsider = false; | |
| 809 for (i = 0; i < len; i++) | |
| 810 reconsider |= wrapup_global_declaration_2 (vec[i]); | |
| 811 if (reconsider) | |
| 812 output_something = true; | |
| 813 } | |
| 814 while (reconsider); | |
| 815 | |
| 816 return output_something; | |
| 817 } | |
| 818 | |
| 819 /* A subroutine of check_global_declarations. Issue appropriate warnings | |
| 820 for the global declaration DECL. */ | |
| 821 | |
| 822 void | |
| 823 check_global_declaration_1 (tree decl) | |
| 824 { | |
| 825 /* Warn about any function declared static but not defined. We don't | |
| 826 warn about variables, because many programs have static variables | |
| 827 that exist only to get some text into the object file. */ | |
| 828 if (TREE_CODE (decl) == FUNCTION_DECL | |
| 829 && DECL_INITIAL (decl) == 0 | |
| 830 && DECL_EXTERNAL (decl) | |
| 831 && ! DECL_ARTIFICIAL (decl) | |
| 832 && ! TREE_NO_WARNING (decl) | |
| 833 && ! TREE_PUBLIC (decl) | |
| 834 && (warn_unused_function | |
| 835 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
| 836 { | |
| 837 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
| 838 pedwarn (input_location, 0, "%q+F used but never defined", decl); | |
| 839 else | |
| 840 warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl); | |
| 841 /* This symbol is effectively an "extern" declaration now. */ | |
| 842 TREE_PUBLIC (decl) = 1; | |
| 843 assemble_external (decl); | |
| 844 } | |
| 845 | |
| 846 /* Warn about static fns or vars defined but not used. */ | |
| 847 if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
| 848 /* We don't warn about "static const" variables because the | |
| 849 "rcs_id" idiom uses that construction. */ | |
| 850 || (warn_unused_variable | |
| 851 && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
| 852 && ! DECL_IN_SYSTEM_HEADER (decl) | |
| 853 && ! TREE_USED (decl) | |
| 854 /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
| 855 to handle multiple external decls in different scopes. */ | |
| 856 && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) | |
| 857 && ! DECL_EXTERNAL (decl) | |
| 858 && ! TREE_PUBLIC (decl) | |
| 859 /* A volatile variable might be used in some non-obvious way. */ | |
| 860 && ! TREE_THIS_VOLATILE (decl) | |
| 861 /* Global register variables must be declared to reserve them. */ | |
| 862 && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
| 863 /* Otherwise, ask the language. */ | |
| 864 && lang_hooks.decls.warn_unused_global (decl)) | |
| 865 warning ((TREE_CODE (decl) == FUNCTION_DECL) | |
| 866 ? OPT_Wunused_function | |
| 867 : OPT_Wunused_variable, | |
| 868 "%q+D defined but not used", decl); | |
| 869 } | |
| 870 | |
| 871 /* Issue appropriate warnings for the global declarations in VEC (of | |
| 872 which there are LEN). */ | |
| 873 | |
| 874 void | |
| 875 check_global_declarations (tree *vec, int len) | |
| 876 { | |
| 877 int i; | |
| 878 | |
| 879 for (i = 0; i < len; i++) | |
| 880 check_global_declaration_1 (vec[i]); | |
| 881 } | |
| 882 | |
| 883 /* Emit debugging information for all global declarations in VEC. */ | |
| 884 | |
| 885 void | |
| 886 emit_debug_global_declarations (tree *vec, int len) | |
| 887 { | |
| 888 int i; | |
| 889 | |
| 890 /* Avoid confusing the debug information machinery when there are errors. */ | |
| 891 if (errorcount != 0 || sorrycount != 0) | |
| 892 return; | |
| 893 | |
| 894 timevar_push (TV_SYMOUT); | |
| 895 for (i = 0; i < len; i++) | |
| 896 debug_hooks->global_decl (vec[i]); | |
| 897 timevar_pop (TV_SYMOUT); | |
| 898 } | |
| 899 | |
| 900 /* Warn about a use of an identifier which was marked deprecated. */ | |
| 901 void | |
| 902 warn_deprecated_use (tree node) | |
| 903 { | |
| 904 if (node == 0 || !warn_deprecated_decl) | |
| 905 return; | |
| 906 | |
| 907 if (DECL_P (node)) | |
| 908 { | |
| 909 expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
| 910 warning (OPT_Wdeprecated_declarations, | |
| 911 "%qD is deprecated (declared at %s:%d)", | |
| 912 node, xloc.file, xloc.line); | |
| 913 } | |
| 914 else if (TYPE_P (node)) | |
| 915 { | |
| 916 const char *what = NULL; | |
| 917 tree decl = TYPE_STUB_DECL (node); | |
| 918 | |
| 919 if (TYPE_NAME (node)) | |
| 920 { | |
| 921 if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
| 922 what = IDENTIFIER_POINTER (TYPE_NAME (node)); | |
| 923 else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL | |
| 924 && DECL_NAME (TYPE_NAME (node))) | |
| 925 what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); | |
| 926 } | |
| 927 | |
| 928 if (decl) | |
| 929 { | |
| 930 expanded_location xloc | |
| 931 = expand_location (DECL_SOURCE_LOCATION (decl)); | |
| 932 if (what) | |
| 933 warning (OPT_Wdeprecated_declarations, | |
| 934 "%qs is deprecated (declared at %s:%d)", what, | |
| 935 xloc.file, xloc.line); | |
| 936 else | |
| 937 warning (OPT_Wdeprecated_declarations, | |
| 938 "type is deprecated (declared at %s:%d)", | |
| 939 xloc.file, xloc.line); | |
| 940 } | |
| 941 else | |
| 942 { | |
| 943 if (what) | |
| 944 warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what); | |
| 945 else | |
| 946 warning (OPT_Wdeprecated_declarations, "type is deprecated"); | |
| 947 } | |
| 948 } | |
| 949 } | |
| 950 | |
| 951 /* Compile an entire translation unit. Write a file of assembly | |
| 952 output and various debugging dumps. */ | |
| 953 | |
| 954 static void | |
| 955 compile_file (void) | |
| 956 { | |
| 957 /* Initialize yet another pass. */ | |
| 958 | |
| 959 ggc_protect_identifiers = true; | |
| 960 | |
| 961 init_cgraph (); | |
| 962 init_final (main_input_filename); | |
| 963 coverage_init (aux_base_name); | |
| 964 statistics_init (); | |
| 965 | |
| 966 timevar_push (TV_PARSE); | |
| 967 | |
| 968 /* Call the parser, which parses the entire file (calling | |
| 969 rest_of_compilation for each function). */ | |
| 970 lang_hooks.parse_file (set_yydebug); | |
| 971 | |
| 972 /* Compilation is now finished except for writing | |
| 973 what's left of the symbol table output. */ | |
| 974 timevar_pop (TV_PARSE); | |
| 975 | |
| 976 if (flag_syntax_only) | |
| 977 return; | |
| 978 | |
| 979 ggc_protect_identifiers = false; | |
| 980 | |
| 981 lang_hooks.decls.final_write_globals (); | |
| 982 | |
| 983 if (errorcount || sorrycount) | |
| 984 return; | |
| 985 | |
| 986 varpool_assemble_pending_decls (); | |
| 987 finish_aliases_2 (); | |
| 988 | |
| 989 /* This must occur after the loop to output deferred functions. | |
| 990 Else the coverage initializer would not be emitted if all the | |
| 991 functions in this compilation unit were deferred. */ | |
| 992 coverage_finish (); | |
| 993 | |
| 994 /* Likewise for mudflap static object registrations. */ | |
| 995 if (flag_mudflap) | |
| 996 mudflap_finish_file (); | |
| 997 | |
| 998 /* Likewise for emulated thread-local storage. */ | |
| 999 if (!targetm.have_tls) | |
| 1000 emutls_finish (); | |
| 1001 | |
| 1002 output_shared_constant_pool (); | |
| 1003 output_object_blocks (); | |
| 1004 | |
| 1005 /* Write out any pending weak symbol declarations. */ | |
| 1006 weak_finish (); | |
| 1007 | |
| 1008 /* Do dbx symbols. */ | |
| 1009 timevar_push (TV_SYMOUT); | |
| 1010 | |
| 1011 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO | |
| 1012 if (dwarf2out_do_frame ()) | |
| 1013 dwarf2out_frame_finish (); | |
| 1014 #endif | |
| 1015 | |
| 1016 (*debug_hooks->finish) (main_input_filename); | |
| 1017 timevar_pop (TV_SYMOUT); | |
| 1018 | |
| 1019 /* Output some stuff at end of file if nec. */ | |
| 1020 | |
| 1021 dw2_output_indirect_constants (); | |
| 1022 | |
| 1023 /* Flush any pending external directives. */ | |
| 1024 process_pending_assemble_externals (); | |
| 1025 | |
| 1026 /* Attach a special .ident directive to the end of the file to identify | |
| 1027 the version of GCC which compiled this code. The format of the .ident | |
| 1028 string is patterned after the ones produced by native SVR4 compilers. */ | |
| 1029 #ifdef IDENT_ASM_OP | |
| 1030 if (!flag_no_ident) | |
| 1031 { | |
| 1032 const char *pkg_version = "(GNU) "; | |
| 1033 | |
| 1034 if (strcmp ("(GCC) ", pkgversion_string)) | |
| 1035 pkg_version = pkgversion_string; | |
| 1036 fprintf (asm_out_file, "%s\"GCC: %s%s\"\n", | |
| 1037 IDENT_ASM_OP, pkg_version, version_string); | |
| 1038 } | |
| 1039 #endif | |
| 1040 | |
| 1041 /* This must be at the end. Some target ports emit end of file directives | |
| 1042 into the assembly file here, and hence we can not output anything to the | |
| 1043 assembly file after this point. */ | |
| 1044 targetm.asm_out.file_end (); | |
| 1045 } | |
| 1046 | |
| 1047 /* Parse a -d... command line switch. */ | |
| 1048 | |
| 1049 void | |
| 1050 decode_d_option (const char *arg) | |
| 1051 { | |
| 1052 int c; | |
| 1053 | |
| 1054 while (*arg) | |
| 1055 switch (c = *arg++) | |
| 1056 { | |
| 1057 case 'A': | |
| 1058 flag_debug_asm = 1; | |
| 1059 break; | |
| 1060 case 'p': | |
| 1061 flag_print_asm_name = 1; | |
| 1062 break; | |
| 1063 case 'P': | |
| 1064 flag_dump_rtl_in_asm = 1; | |
| 1065 flag_print_asm_name = 1; | |
| 1066 break; | |
| 1067 case 'v': | |
| 1068 graph_dump_format = vcg; | |
| 1069 break; | |
| 1070 case 'x': | |
| 1071 rtl_dump_and_exit = 1; | |
| 1072 break; | |
| 1073 case 'y': | |
| 1074 set_yydebug = 1; | |
| 1075 break; | |
| 1076 case 'D': /* These are handled by the preprocessor. */ | |
| 1077 case 'I': | |
| 1078 case 'M': | |
| 1079 case 'N': | |
| 1080 case 'U': | |
| 1081 break; | |
| 1082 case 'H': | |
| 1083 setup_core_dumping(); | |
| 1084 break; | |
| 1085 case 'a': | |
| 1086 enable_rtl_dump_file (); | |
| 1087 break; | |
| 1088 | |
| 1089 default: | |
| 1090 warning (0, "unrecognized gcc debugging option: %c", c); | |
| 1091 break; | |
| 1092 } | |
| 1093 } | |
| 1094 | |
| 1095 /* Indexed by enum debug_info_type. */ | |
| 1096 const char *const debug_type_names[] = | |
| 1097 { | |
| 1098 "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" | |
| 1099 }; | |
| 1100 | |
| 1101 /* Print version information to FILE. | |
| 1102 Each line begins with INDENT (for the case where FILE is the | |
| 1103 assembler output file). */ | |
| 1104 | |
| 1105 void | |
| 1106 print_version (FILE *file, const char *indent) | |
| 1107 { | |
| 1108 static const char fmt1[] = | |
| 1109 #ifdef __GNUC__ | |
| 1110 N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") | |
| 1111 #else | |
| 1112 N_("%s%s%s %sversion %s (%s) compiled by CC, ") | |
| 1113 #endif | |
| 1114 ; | |
| 1115 static const char fmt2[] = | |
| 1116 N_("GMP version %s, MPFR version %s.\n"); | |
| 1117 static const char fmt3[] = | |
| 1118 N_("%s%swarning: %s header version %s differs from library version %s.\n"); | |
| 1119 static const char fmt4[] = | |
| 1120 N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); | |
| 1121 #ifndef __VERSION__ | |
| 1122 #define __VERSION__ "[?]" | |
| 1123 #endif | |
| 1124 fprintf (file, | |
| 1125 file == stderr ? _(fmt1) : fmt1, | |
| 1126 indent, *indent != 0 ? " " : "", | |
| 1127 lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, | |
| 1128 indent, __VERSION__); | |
| 1129 | |
| 1130 /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
|
19
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1131 two string formats, "i.j.k" and "i.j" when k is zero. As of |
|
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1132 gmp-4.3.0, GMP always uses the 3 number format. */ |
| 0 | 1133 #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
| 1134 #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X) | |
|
19
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1135 #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
|
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1136 #define GCC_GMP_VERSION \ |
|
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1137 GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) |
|
58ad6c70ea60
update gcc from 4.4.0 to 4.4.1.
kent@firefly.cr.ie.u-ryukyu.ac.jp
parents:
0
diff
changeset
|
1138 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 |
| 0 | 1139 #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ |
| 1140 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) | |
| 1141 #else | |
| 1142 #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ | |
| 1143 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \ | |
| 1144 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL) | |
| 1145 #endif | |
| 1146 fprintf (file, | |
| 1147 file == stderr ? _(fmt2) : fmt2, | |
| 1148 GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING); | |
| 1149 if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) | |
| 1150 fprintf (file, | |
| 1151 file == stderr ? _(fmt3) : fmt3, | |
| 1152 indent, *indent != 0 ? " " : "", | |
| 1153 "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); | |
| 1154 if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
| 1155 fprintf (file, | |
| 1156 file == stderr ? _(fmt3) : fmt3, | |
| 1157 indent, *indent != 0 ? " " : "", | |
| 1158 "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); | |
| 1159 fprintf (file, | |
| 1160 file == stderr ? _(fmt4) : fmt4, | |
| 1161 indent, *indent != 0 ? " " : "", | |
| 1162 PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
| 1163 } | |
| 1164 | |
| 1165 #ifdef ASM_COMMENT_START | |
| 1166 static int | |
| 1167 print_to_asm_out_file (print_switch_type type, const char * text) | |
| 1168 { | |
| 1169 bool prepend_sep = true; | |
| 1170 | |
| 1171 switch (type) | |
| 1172 { | |
| 1173 case SWITCH_TYPE_LINE_END: | |
| 1174 putc ('\n', asm_out_file); | |
| 1175 return 1; | |
| 1176 | |
| 1177 case SWITCH_TYPE_LINE_START: | |
| 1178 fputs (ASM_COMMENT_START, asm_out_file); | |
| 1179 return strlen (ASM_COMMENT_START); | |
| 1180 | |
| 1181 case SWITCH_TYPE_DESCRIPTIVE: | |
| 1182 if (ASM_COMMENT_START[0] == 0) | |
| 1183 prepend_sep = false; | |
| 1184 /* Drop through. */ | |
| 1185 case SWITCH_TYPE_PASSED: | |
| 1186 case SWITCH_TYPE_ENABLED: | |
| 1187 if (prepend_sep) | |
| 1188 fputc (' ', asm_out_file); | |
| 1189 fprintf (asm_out_file, text); | |
| 1190 /* No need to return the length here as | |
| 1191 print_single_switch has already done it. */ | |
| 1192 return 0; | |
| 1193 | |
| 1194 default: | |
| 1195 return -1; | |
| 1196 } | |
| 1197 } | |
| 1198 #endif | |
| 1199 | |
| 1200 static int | |
| 1201 print_to_stderr (print_switch_type type, const char * text) | |
| 1202 { | |
| 1203 switch (type) | |
| 1204 { | |
| 1205 case SWITCH_TYPE_LINE_END: | |
| 1206 putc ('\n', stderr); | |
| 1207 return 1; | |
| 1208 | |
| 1209 case SWITCH_TYPE_LINE_START: | |
| 1210 return 0; | |
| 1211 | |
| 1212 case SWITCH_TYPE_PASSED: | |
| 1213 case SWITCH_TYPE_ENABLED: | |
| 1214 fputc (' ', stderr); | |
| 1215 /* Drop through. */ | |
| 1216 | |
| 1217 case SWITCH_TYPE_DESCRIPTIVE: | |
| 1218 fprintf (stderr, text); | |
| 1219 /* No need to return the length here as | |
| 1220 print_single_switch has already done it. */ | |
| 1221 return 0; | |
| 1222 | |
| 1223 default: | |
| 1224 return -1; | |
| 1225 } | |
| 1226 } | |
| 1227 | |
| 1228 /* Print an option value and return the adjusted position in the line. | |
| 1229 ??? print_fn doesn't handle errors, eg disk full; presumably other | |
| 1230 code will catch a disk full though. */ | |
| 1231 | |
| 1232 static int | |
| 1233 print_single_switch (print_switch_fn_type print_fn, | |
| 1234 int pos, | |
| 1235 print_switch_type type, | |
| 1236 const char * text) | |
| 1237 { | |
| 1238 /* The ultrix fprintf returns 0 on success, so compute the result | |
| 1239 we want here since we need it for the following test. The +1 | |
| 1240 is for the separator character that will probably be emitted. */ | |
| 1241 int len = strlen (text) + 1; | |
| 1242 | |
| 1243 if (pos != 0 | |
| 1244 && pos + len > MAX_LINE) | |
| 1245 { | |
| 1246 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1247 pos = 0; | |
| 1248 } | |
| 1249 | |
| 1250 if (pos == 0) | |
| 1251 pos += print_fn (SWITCH_TYPE_LINE_START, NULL); | |
| 1252 | |
| 1253 print_fn (type, text); | |
| 1254 return pos + len; | |
| 1255 } | |
| 1256 | |
| 1257 /* Print active target switches using PRINT_FN. | |
| 1258 POS is the current cursor position and MAX is the size of a "line". | |
| 1259 Each line begins with INDENT and ends with TERM. | |
| 1260 Each switch is separated from the next by SEP. */ | |
| 1261 | |
| 1262 static void | |
| 1263 print_switch_values (print_switch_fn_type print_fn) | |
| 1264 { | |
| 1265 int pos = 0; | |
| 1266 size_t j; | |
| 1267 const char **p; | |
| 1268 | |
| 1269 /* Fill in the -frandom-seed option, if the user didn't pass it, so | |
| 1270 that it can be printed below. This helps reproducibility. */ | |
| 1271 if (!flag_random_seed) | |
| 1272 init_random_seed (); | |
| 1273 | |
| 1274 /* Print the options as passed. */ | |
| 1275 pos = print_single_switch (print_fn, pos, | |
| 1276 SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
| 1277 | |
| 1278 for (p = &save_argv[1]; *p != NULL; p++) | |
| 1279 { | |
| 1280 if (**p == '-') | |
| 1281 { | |
| 1282 /* Ignore these. */ | |
| 1283 if (strcmp (*p, "-o") == 0 | |
| 1284 || strcmp (*p, "-dumpbase") == 0 | |
| 1285 || strcmp (*p, "-auxbase") == 0) | |
| 1286 { | |
| 1287 if (p[1] != NULL) | |
| 1288 p++; | |
| 1289 continue; | |
| 1290 } | |
| 1291 | |
| 1292 if (strcmp (*p, "-quiet") == 0 | |
| 1293 || strcmp (*p, "-version") == 0) | |
| 1294 continue; | |
| 1295 | |
| 1296 if ((*p)[1] == 'd') | |
| 1297 continue; | |
| 1298 } | |
| 1299 | |
| 1300 pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
| 1301 } | |
| 1302 | |
| 1303 if (pos > 0) | |
| 1304 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1305 | |
| 1306 /* Print the -f and -m options that have been enabled. | |
| 1307 We don't handle language specific options but printing argv | |
| 1308 should suffice. */ | |
| 1309 pos = print_single_switch (print_fn, 0, | |
| 1310 SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
| 1311 | |
| 1312 for (j = 0; j < cl_options_count; j++) | |
| 1313 if ((cl_options[j].flags & CL_REPORT) | |
| 1314 && option_enabled (j) > 0) | |
| 1315 pos = print_single_switch (print_fn, pos, | |
| 1316 SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
| 1317 | |
| 1318 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1319 } | |
| 1320 | |
| 1321 /* Open assembly code output file. Do this even if -fsyntax-only is | |
| 1322 on, because then the driver will have provided the name of a | |
| 1323 temporary file or bit bucket for us. NAME is the file specified on | |
| 1324 the command line, possibly NULL. */ | |
| 1325 static void | |
| 1326 init_asm_output (const char *name) | |
| 1327 { | |
| 1328 if (name == NULL && asm_file_name == 0) | |
| 1329 asm_out_file = stdout; | |
| 1330 else | |
| 1331 { | |
| 1332 if (asm_file_name == 0) | |
| 1333 { | |
| 1334 int len = strlen (dump_base_name); | |
| 1335 char *dumpname = XNEWVEC (char, len + 6); | |
| 1336 | |
| 1337 memcpy (dumpname, dump_base_name, len + 1); | |
| 1338 strip_off_ending (dumpname, len); | |
| 1339 strcat (dumpname, ".s"); | |
| 1340 asm_file_name = dumpname; | |
| 1341 } | |
| 1342 if (!strcmp (asm_file_name, "-")) | |
| 1343 asm_out_file = stdout; | |
| 1344 else | |
| 1345 asm_out_file = fopen (asm_file_name, "w+b"); | |
| 1346 if (asm_out_file == 0) | |
| 1347 fatal_error ("can%'t open %s for writing: %m", asm_file_name); | |
| 1348 } | |
| 1349 | |
| 1350 if (!flag_syntax_only) | |
| 1351 { | |
| 1352 targetm.asm_out.file_start (); | |
| 1353 | |
| 1354 if (flag_record_gcc_switches) | |
| 1355 { | |
| 1356 if (targetm.asm_out.record_gcc_switches) | |
| 1357 { | |
| 1358 /* Let the target know that we are about to start recording. */ | |
| 1359 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 1360 NULL); | |
| 1361 /* Now record the switches. */ | |
| 1362 print_switch_values (targetm.asm_out.record_gcc_switches); | |
| 1363 /* Let the target know that the recording is over. */ | |
| 1364 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 1365 NULL); | |
| 1366 } | |
| 1367 else | |
| 1368 inform (input_location, "-frecord-gcc-switches is not supported by the current target"); | |
| 1369 } | |
| 1370 | |
| 1371 #ifdef ASM_COMMENT_START | |
| 1372 if (flag_verbose_asm) | |
| 1373 { | |
| 1374 /* Print the list of switches in effect | |
| 1375 into the assembler file as comments. */ | |
| 1376 print_version (asm_out_file, ASM_COMMENT_START); | |
| 1377 print_switch_values (print_to_asm_out_file); | |
| 1378 fprintf (asm_out_file, "\n"); | |
| 1379 } | |
| 1380 #endif | |
| 1381 } | |
| 1382 } | |
| 1383 | |
| 1384 /* Return true if the state of option OPTION should be stored in PCH files | |
| 1385 and checked by default_pch_valid_p. Store the option's current state | |
| 1386 in STATE if so. */ | |
| 1387 | |
| 1388 static inline bool | |
| 1389 option_affects_pch_p (int option, struct cl_option_state *state) | |
| 1390 { | |
| 1391 if ((cl_options[option].flags & CL_TARGET) == 0) | |
| 1392 return false; | |
| 1393 if (cl_options[option].flag_var == &target_flags) | |
| 1394 if (targetm.check_pch_target_flags) | |
| 1395 return false; | |
| 1396 return get_option_state (option, state); | |
| 1397 } | |
| 1398 | |
| 1399 /* Default version of get_pch_validity. | |
| 1400 By default, every flag difference is fatal; that will be mostly right for | |
| 1401 most targets, but completely right for very few. */ | |
| 1402 | |
| 1403 void * | |
| 1404 default_get_pch_validity (size_t *len) | |
| 1405 { | |
| 1406 struct cl_option_state state; | |
| 1407 size_t i; | |
| 1408 char *result, *r; | |
| 1409 | |
| 1410 *len = 2; | |
| 1411 if (targetm.check_pch_target_flags) | |
| 1412 *len += sizeof (target_flags); | |
| 1413 for (i = 0; i < cl_options_count; i++) | |
| 1414 if (option_affects_pch_p (i, &state)) | |
| 1415 *len += state.size; | |
| 1416 | |
| 1417 result = r = XNEWVEC (char, *len); | |
| 1418 r[0] = flag_pic; | |
| 1419 r[1] = flag_pie; | |
| 1420 r += 2; | |
| 1421 if (targetm.check_pch_target_flags) | |
| 1422 { | |
| 1423 memcpy (r, &target_flags, sizeof (target_flags)); | |
| 1424 r += sizeof (target_flags); | |
| 1425 } | |
| 1426 | |
| 1427 for (i = 0; i < cl_options_count; i++) | |
| 1428 if (option_affects_pch_p (i, &state)) | |
| 1429 { | |
| 1430 memcpy (r, state.data, state.size); | |
| 1431 r += state.size; | |
| 1432 } | |
| 1433 | |
| 1434 return result; | |
| 1435 } | |
| 1436 | |
| 1437 /* Return a message which says that a PCH file was created with a different | |
| 1438 setting of OPTION. */ | |
| 1439 | |
| 1440 static const char * | |
| 1441 pch_option_mismatch (const char *option) | |
| 1442 { | |
| 1443 char *r; | |
| 1444 | |
| 1445 asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
| 1446 if (r == NULL) | |
| 1447 return _("out of memory"); | |
| 1448 return r; | |
| 1449 } | |
| 1450 | |
| 1451 /* Default version of pch_valid_p. */ | |
| 1452 | |
| 1453 const char * | |
| 1454 default_pch_valid_p (const void *data_p, size_t len) | |
| 1455 { | |
| 1456 struct cl_option_state state; | |
| 1457 const char *data = (const char *)data_p; | |
| 1458 size_t i; | |
| 1459 | |
| 1460 /* -fpic and -fpie also usually make a PCH invalid. */ | |
| 1461 if (data[0] != flag_pic) | |
| 1462 return _("created and used with different settings of -fpic"); | |
| 1463 if (data[1] != flag_pie) | |
| 1464 return _("created and used with different settings of -fpie"); | |
| 1465 data += 2; | |
| 1466 | |
| 1467 /* Check target_flags. */ | |
| 1468 if (targetm.check_pch_target_flags) | |
| 1469 { | |
| 1470 int tf; | |
| 1471 const char *r; | |
| 1472 | |
| 1473 memcpy (&tf, data, sizeof (target_flags)); | |
| 1474 data += sizeof (target_flags); | |
| 1475 len -= sizeof (target_flags); | |
| 1476 r = targetm.check_pch_target_flags (tf); | |
| 1477 if (r != NULL) | |
| 1478 return r; | |
| 1479 } | |
| 1480 | |
| 1481 for (i = 0; i < cl_options_count; i++) | |
| 1482 if (option_affects_pch_p (i, &state)) | |
| 1483 { | |
| 1484 if (memcmp (data, state.data, state.size) != 0) | |
| 1485 return pch_option_mismatch (cl_options[i].opt_text); | |
| 1486 data += state.size; | |
| 1487 len -= state.size; | |
| 1488 } | |
| 1489 | |
| 1490 return NULL; | |
| 1491 } | |
| 1492 | |
| 1493 /* Default tree printer. Handles declarations only. */ | |
| 1494 static bool | |
| 1495 default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, | |
| 1496 int precision, bool wide, bool set_locus, bool hash) | |
| 1497 { | |
| 1498 tree t; | |
| 1499 | |
| 1500 /* FUTURE: %+x should set the locus. */ | |
| 1501 if (precision != 0 || wide || hash) | |
| 1502 return false; | |
| 1503 | |
| 1504 switch (*spec) | |
| 1505 { | |
| 1506 case 'D': | |
| 1507 t = va_arg (*text->args_ptr, tree); | |
| 1508 if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) | |
| 1509 t = DECL_DEBUG_EXPR (t); | |
| 1510 break; | |
| 1511 | |
| 1512 case 'F': | |
| 1513 case 'T': | |
| 1514 t = va_arg (*text->args_ptr, tree); | |
| 1515 break; | |
| 1516 | |
| 1517 default: | |
| 1518 return false; | |
| 1519 } | |
| 1520 | |
| 1521 if (set_locus && text->locus) | |
| 1522 *text->locus = DECL_SOURCE_LOCATION (t); | |
| 1523 | |
| 1524 if (DECL_P (t)) | |
| 1525 { | |
| 1526 const char *n = DECL_NAME (t) | |
| 1527 ? lang_hooks.decl_printable_name (t, 2) | |
| 1528 : "<anonymous>"; | |
| 1529 pp_string (pp, n); | |
| 1530 } | |
| 1531 else | |
| 1532 dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0); | |
| 1533 | |
| 1534 return true; | |
| 1535 } | |
| 1536 | |
| 1537 /* A helper function; used as the reallocator function for cpp's line | |
| 1538 table. */ | |
| 1539 static void * | |
| 1540 realloc_for_line_map (void *ptr, size_t len) | |
| 1541 { | |
| 1542 return ggc_realloc (ptr, len); | |
| 1543 } | |
| 1544 | |
| 1545 /* Initialization of the front end environment, before command line | |
| 1546 options are parsed. Signal handlers, internationalization etc. | |
| 1547 ARGV0 is main's argv[0]. */ | |
| 1548 static void | |
| 1549 general_init (const char *argv0) | |
| 1550 { | |
| 1551 const char *p; | |
| 1552 | |
| 1553 p = argv0 + strlen (argv0); | |
| 1554 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
| 1555 --p; | |
| 1556 progname = p; | |
| 1557 | |
| 1558 xmalloc_set_program_name (progname); | |
| 1559 | |
| 1560 hex_init (); | |
| 1561 | |
| 1562 /* Unlock the stdio streams. */ | |
| 1563 unlock_std_streams (); | |
| 1564 | |
| 1565 gcc_init_libintl (); | |
| 1566 | |
| 1567 /* Initialize the diagnostics reporting machinery, so option parsing | |
| 1568 can give warnings and errors. */ | |
| 1569 diagnostic_initialize (global_dc); | |
| 1570 /* Set a default printer. Language specific initializations will | |
| 1571 override it later. */ | |
| 1572 pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
| 1573 | |
| 1574 /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ | |
| 1575 #ifdef SIGSEGV | |
| 1576 signal (SIGSEGV, crash_signal); | |
| 1577 #endif | |
| 1578 #ifdef SIGILL | |
| 1579 signal (SIGILL, crash_signal); | |
| 1580 #endif | |
| 1581 #ifdef SIGBUS | |
| 1582 signal (SIGBUS, crash_signal); | |
| 1583 #endif | |
| 1584 #ifdef SIGABRT | |
| 1585 signal (SIGABRT, crash_signal); | |
| 1586 #endif | |
| 1587 #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
| 1588 signal (SIGIOT, crash_signal); | |
| 1589 #endif | |
| 1590 #ifdef SIGFPE | |
| 1591 signal (SIGFPE, crash_signal); | |
| 1592 #endif | |
| 1593 | |
| 1594 /* Other host-specific signal setup. */ | |
| 1595 (*host_hooks.extra_signals)(); | |
| 1596 | |
| 1597 /* Initialize the garbage-collector, string pools and tree type hash | |
| 1598 table. */ | |
| 1599 init_ggc (); | |
| 1600 init_stringpool (); | |
| 1601 line_table = GGC_NEW (struct line_maps); | |
| 1602 linemap_init (line_table); | |
| 1603 line_table->reallocator = realloc_for_line_map; | |
| 1604 init_ttree (); | |
| 1605 | |
| 1606 /* Initialize register usage now so switches may override. */ | |
| 1607 init_reg_sets (); | |
| 1608 | |
| 1609 /* Register the language-independent parameters. */ | |
| 1610 add_params (lang_independent_params, LAST_PARAM); | |
| 1611 | |
| 1612 /* This must be done after add_params but before argument processing. */ | |
| 1613 init_ggc_heuristics(); | |
| 1614 init_optimization_passes (); | |
| 1615 statistics_early_init (); | |
| 1616 } | |
| 1617 | |
| 1618 /* Return true if the current target supports -fsection-anchors. */ | |
| 1619 | |
| 1620 static bool | |
| 1621 target_supports_section_anchors_p (void) | |
| 1622 { | |
| 1623 if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
| 1624 return false; | |
| 1625 | |
| 1626 if (targetm.asm_out.output_anchor == NULL) | |
| 1627 return false; | |
| 1628 | |
| 1629 return true; | |
| 1630 } | |
| 1631 | |
| 1632 /* Default the align_* variables to 1 if they're still unset, and | |
| 1633 set up the align_*_log variables. */ | |
| 1634 static void | |
| 1635 init_alignments (void) | |
| 1636 { | |
| 1637 if (align_loops <= 0) | |
| 1638 align_loops = 1; | |
| 1639 if (align_loops_max_skip > align_loops) | |
| 1640 align_loops_max_skip = align_loops - 1; | |
| 1641 align_loops_log = floor_log2 (align_loops * 2 - 1); | |
| 1642 if (align_jumps <= 0) | |
| 1643 align_jumps = 1; | |
| 1644 if (align_jumps_max_skip > align_jumps) | |
| 1645 align_jumps_max_skip = align_jumps - 1; | |
| 1646 align_jumps_log = floor_log2 (align_jumps * 2 - 1); | |
| 1647 if (align_labels <= 0) | |
| 1648 align_labels = 1; | |
| 1649 align_labels_log = floor_log2 (align_labels * 2 - 1); | |
| 1650 if (align_labels_max_skip > align_labels) | |
| 1651 align_labels_max_skip = align_labels - 1; | |
| 1652 if (align_functions <= 0) | |
| 1653 align_functions = 1; | |
| 1654 align_functions_log = floor_log2 (align_functions * 2 - 1); | |
| 1655 } | |
| 1656 | |
| 1657 /* Process the options that have been parsed. */ | |
| 1658 static void | |
| 1659 process_options (void) | |
| 1660 { | |
| 1661 /* Just in case lang_hooks.post_options ends up calling a debug_hook. | |
| 1662 This can happen with incorrect pre-processed input. */ | |
| 1663 debug_hooks = &do_nothing_debug_hooks; | |
| 1664 | |
| 1665 /* This replaces set_Wunused. */ | |
| 1666 if (warn_unused_function == -1) | |
| 1667 warn_unused_function = warn_unused; | |
| 1668 if (warn_unused_label == -1) | |
| 1669 warn_unused_label = warn_unused; | |
| 1670 /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */ | |
| 1671 if (warn_unused_parameter == -1) | |
| 1672 warn_unused_parameter = (warn_unused && extra_warnings); | |
| 1673 if (warn_unused_variable == -1) | |
| 1674 warn_unused_variable = warn_unused; | |
| 1675 if (warn_unused_value == -1) | |
| 1676 warn_unused_value = warn_unused; | |
| 1677 | |
| 1678 /* Allow the front end to perform consistency checks and do further | |
| 1679 initialization based on the command line options. This hook also | |
| 1680 sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
| 1681 so we can correctly initialize debug output. */ | |
| 1682 no_backend = lang_hooks.post_options (&main_input_filename); | |
| 1683 | |
| 1684 #ifdef OVERRIDE_OPTIONS | |
| 1685 /* Some machines may reject certain combinations of options. */ | |
| 1686 OVERRIDE_OPTIONS; | |
| 1687 #endif | |
| 1688 | |
| 1689 if (flag_section_anchors && !target_supports_section_anchors_p ()) | |
| 1690 { | |
| 1691 warning (OPT_fsection_anchors, | |
| 1692 "this target does not support %qs", "-fsection-anchors"); | |
| 1693 flag_section_anchors = 0; | |
| 1694 } | |
| 1695 | |
| 1696 if (flag_short_enums == 2) | |
| 1697 flag_short_enums = targetm.default_short_enums (); | |
| 1698 | |
| 1699 /* Set aux_base_name if not already set. */ | |
| 1700 if (aux_base_name) | |
| 1701 ; | |
| 1702 else if (main_input_filename) | |
| 1703 { | |
| 1704 char *name = xstrdup (lbasename (main_input_filename)); | |
| 1705 | |
| 1706 strip_off_ending (name, strlen (name)); | |
| 1707 aux_base_name = name; | |
| 1708 } | |
| 1709 else | |
| 1710 aux_base_name = "gccaux"; | |
| 1711 | |
| 1712 #ifndef HAVE_cloog | |
| 1713 if (flag_graphite | |
| 1714 || flag_loop_block | |
| 1715 || flag_loop_interchange | |
| 1716 || flag_loop_strip_mine | |
| 1717 || flag_graphite_identity) | |
| 1718 sorry ("Graphite loop optimizations cannot be used"); | |
| 1719 #endif | |
| 1720 | |
| 1721 /* Unrolling all loops implies that standard loop unrolling must also | |
| 1722 be done. */ | |
| 1723 if (flag_unroll_all_loops) | |
| 1724 flag_unroll_loops = 1; | |
| 1725 | |
| 1726 /* The loop unrolling code assumes that cse will be run after loop. | |
| 1727 web and rename-registers also help when run after loop unrolling. */ | |
| 1728 | |
| 1729 if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
| 1730 flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
| 1731 if (flag_web == AUTODETECT_VALUE) | |
| 1732 flag_web = flag_unroll_loops || flag_peel_loops; | |
| 1733 if (flag_rename_registers == AUTODETECT_VALUE) | |
| 1734 flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
| 1735 | |
| 1736 if (flag_non_call_exceptions) | |
| 1737 flag_asynchronous_unwind_tables = 1; | |
| 1738 if (flag_asynchronous_unwind_tables) | |
| 1739 flag_unwind_tables = 1; | |
| 1740 | |
| 1741 if (flag_value_profile_transformations) | |
| 1742 flag_profile_values = 1; | |
| 1743 | |
| 1744 /* Warn about options that are not supported on this machine. */ | |
| 1745 #ifndef INSN_SCHEDULING | |
| 1746 if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
| 1747 warning (0, "instruction scheduling not supported on this target machine"); | |
| 1748 #endif | |
| 1749 #ifndef DELAY_SLOTS | |
| 1750 if (flag_delayed_branch) | |
| 1751 warning (0, "this target machine does not have delayed branches"); | |
| 1752 #endif | |
| 1753 | |
| 1754 user_label_prefix = USER_LABEL_PREFIX; | |
| 1755 if (flag_leading_underscore != -1) | |
| 1756 { | |
| 1757 /* If the default prefix is more complicated than "" or "_", | |
| 1758 issue a warning and ignore this option. */ | |
| 1759 if (user_label_prefix[0] == 0 || | |
| 1760 (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
| 1761 { | |
| 1762 user_label_prefix = flag_leading_underscore ? "_" : ""; | |
| 1763 } | |
| 1764 else | |
| 1765 warning (0, "-f%sleading-underscore not supported on this target machine", | |
| 1766 flag_leading_underscore ? "" : "no-"); | |
| 1767 } | |
| 1768 | |
| 1769 /* If we are in verbose mode, write out the version and maybe all the | |
| 1770 option flags in use. */ | |
| 1771 if (version_flag) | |
| 1772 { | |
| 1773 print_version (stderr, ""); | |
| 1774 if (! quiet_flag) | |
| 1775 print_switch_values (print_to_stderr); | |
| 1776 } | |
| 1777 | |
| 1778 if (flag_syntax_only) | |
| 1779 { | |
| 1780 write_symbols = NO_DEBUG; | |
| 1781 profile_flag = 0; | |
| 1782 } | |
| 1783 | |
| 1784 /* A lot of code assumes write_symbols == NO_DEBUG if the debugging | |
| 1785 level is 0. */ | |
| 1786 if (debug_info_level == DINFO_LEVEL_NONE) | |
| 1787 write_symbols = NO_DEBUG; | |
| 1788 | |
| 1789 /* Now we know write_symbols, set up the debug hooks based on it. | |
| 1790 By default we do nothing for debug output. */ | |
| 1791 if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) | |
| 1792 default_debug_hooks = &do_nothing_debug_hooks; | |
| 1793 #if defined(DBX_DEBUGGING_INFO) | |
| 1794 else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
| 1795 default_debug_hooks = &dbx_debug_hooks; | |
| 1796 #endif | |
| 1797 #if defined(XCOFF_DEBUGGING_INFO) | |
| 1798 else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
| 1799 default_debug_hooks = &xcoff_debug_hooks; | |
| 1800 #endif | |
| 1801 #ifdef SDB_DEBUGGING_INFO | |
| 1802 else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
| 1803 default_debug_hooks = &sdb_debug_hooks; | |
| 1804 #endif | |
| 1805 #ifdef DWARF2_DEBUGGING_INFO | |
| 1806 else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
| 1807 default_debug_hooks = &dwarf2_debug_hooks; | |
| 1808 #endif | |
| 1809 #ifdef VMS_DEBUGGING_INFO | |
| 1810 else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
| 1811 || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
| 1812 default_debug_hooks = &vmsdbg_debug_hooks; | |
| 1813 #endif | |
| 1814 | |
| 1815 if (write_symbols == NO_DEBUG) | |
| 1816 ; | |
| 1817 #if defined(DBX_DEBUGGING_INFO) | |
| 1818 else if (write_symbols == DBX_DEBUG) | |
| 1819 debug_hooks = &dbx_debug_hooks; | |
| 1820 #endif | |
| 1821 #if defined(XCOFF_DEBUGGING_INFO) | |
| 1822 else if (write_symbols == XCOFF_DEBUG) | |
| 1823 debug_hooks = &xcoff_debug_hooks; | |
| 1824 #endif | |
| 1825 #ifdef SDB_DEBUGGING_INFO | |
| 1826 else if (write_symbols == SDB_DEBUG) | |
| 1827 debug_hooks = &sdb_debug_hooks; | |
| 1828 #endif | |
| 1829 #ifdef DWARF2_DEBUGGING_INFO | |
| 1830 else if (write_symbols == DWARF2_DEBUG) | |
| 1831 debug_hooks = &dwarf2_debug_hooks; | |
| 1832 #endif | |
| 1833 #ifdef VMS_DEBUGGING_INFO | |
| 1834 else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
| 1835 debug_hooks = &vmsdbg_debug_hooks; | |
| 1836 #endif | |
| 1837 else | |
| 1838 error ("target system does not support the \"%s\" debug format", | |
| 1839 debug_type_names[write_symbols]); | |
| 1840 | |
| 1841 /* Now we know which debug output will be used so we can set | |
| 1842 flag_var_tracking, flag_rename_registers if the user has | |
| 1843 not specified them. */ | |
| 1844 if (debug_info_level < DINFO_LEVEL_NORMAL | |
| 1845 || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
| 1846 { | |
| 1847 if (flag_var_tracking == 1 | |
| 1848 || flag_var_tracking_uninit == 1) | |
| 1849 { | |
| 1850 if (debug_info_level < DINFO_LEVEL_NORMAL) | |
| 1851 warning (0, "variable tracking requested, but useless unless " | |
| 1852 "producing debug info"); | |
| 1853 else | |
| 1854 warning (0, "variable tracking requested, but not supported " | |
| 1855 "by this debug format"); | |
| 1856 } | |
| 1857 flag_var_tracking = 0; | |
| 1858 flag_var_tracking_uninit = 0; | |
| 1859 } | |
| 1860 | |
| 1861 if (flag_rename_registers == AUTODETECT_VALUE) | |
| 1862 flag_rename_registers = default_debug_hooks->var_location | |
| 1863 != do_nothing_debug_hooks.var_location; | |
| 1864 | |
| 1865 if (flag_var_tracking == AUTODETECT_VALUE) | |
| 1866 flag_var_tracking = optimize >= 1; | |
| 1867 | |
| 1868 if (flag_tree_cselim == AUTODETECT_VALUE) | |
| 1869 #ifdef HAVE_conditional_move | |
| 1870 flag_tree_cselim = 1; | |
| 1871 #else | |
| 1872 flag_tree_cselim = 0; | |
| 1873 #endif | |
| 1874 | |
| 1875 /* If the user specifically requested variable tracking with tagging | |
| 1876 uninitialized variables, we need to turn on variable tracking. | |
| 1877 (We already determined above that variable tracking is feasible.) */ | |
| 1878 if (flag_var_tracking_uninit) | |
| 1879 flag_var_tracking = 1; | |
| 1880 | |
| 1881 /* If auxiliary info generation is desired, open the output file. | |
| 1882 This goes in the same directory as the source file--unlike | |
| 1883 all the other output files. */ | |
| 1884 if (flag_gen_aux_info) | |
| 1885 { | |
| 1886 aux_info_file = fopen (aux_info_file_name, "w"); | |
| 1887 if (aux_info_file == 0) | |
| 1888 fatal_error ("can%'t open %s: %m", aux_info_file_name); | |
| 1889 } | |
| 1890 | |
| 1891 if (! targetm.have_named_sections) | |
| 1892 { | |
| 1893 if (flag_function_sections) | |
| 1894 { | |
| 1895 warning (0, "-ffunction-sections not supported for this target"); | |
| 1896 flag_function_sections = 0; | |
| 1897 } | |
| 1898 if (flag_data_sections) | |
| 1899 { | |
| 1900 warning (0, "-fdata-sections not supported for this target"); | |
| 1901 flag_data_sections = 0; | |
| 1902 } | |
| 1903 } | |
| 1904 | |
| 1905 if (flag_function_sections && profile_flag) | |
| 1906 { | |
| 1907 warning (0, "-ffunction-sections disabled; it makes profiling impossible"); | |
| 1908 flag_function_sections = 0; | |
| 1909 } | |
| 1910 | |
| 1911 #ifndef HAVE_prefetch | |
| 1912 if (flag_prefetch_loop_arrays) | |
| 1913 { | |
| 1914 warning (0, "-fprefetch-loop-arrays not supported for this target"); | |
| 1915 flag_prefetch_loop_arrays = 0; | |
| 1916 } | |
| 1917 #else | |
| 1918 if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
| 1919 { | |
| 1920 warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); | |
| 1921 flag_prefetch_loop_arrays = 0; | |
| 1922 } | |
| 1923 #endif | |
| 1924 | |
| 1925 /* This combination of options isn't handled for i386 targets and doesn't | |
| 1926 make much sense anyway, so don't allow it. */ | |
| 1927 if (flag_prefetch_loop_arrays && optimize_size) | |
| 1928 { | |
| 1929 warning (0, "-fprefetch-loop-arrays is not supported with -Os"); | |
| 1930 flag_prefetch_loop_arrays = 0; | |
| 1931 } | |
| 1932 | |
| 1933 /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
| 1934 if (flag_signaling_nans) | |
| 1935 flag_trapping_math = 1; | |
| 1936 | |
| 1937 /* We cannot reassociate if we want traps or signed zeros. */ | |
| 1938 if (flag_associative_math && (flag_trapping_math || flag_signed_zeros)) | |
| 1939 { | |
| 1940 warning (0, "-fassociative-math disabled; other options take precedence"); | |
| 1941 flag_associative_math = 0; | |
| 1942 } | |
| 1943 | |
| 1944 /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ | |
| 1945 if (flag_cx_limited_range) | |
| 1946 flag_complex_method = 0; | |
| 1947 | |
| 1948 /* With -fcx-fortran-rules, we do something in-between cheap and C99. */ | |
| 1949 if (flag_cx_fortran_rules) | |
| 1950 flag_complex_method = 1; | |
| 1951 | |
| 1952 /* Targets must be able to place spill slots at lower addresses. If the | |
| 1953 target already uses a soft frame pointer, the transition is trivial. */ | |
| 1954 if (!FRAME_GROWS_DOWNWARD && flag_stack_protect) | |
| 1955 { | |
| 1956 warning (0, "-fstack-protector not supported for this target"); | |
| 1957 flag_stack_protect = 0; | |
| 1958 } | |
| 1959 if (!flag_stack_protect) | |
| 1960 warn_stack_protect = 0; | |
| 1961 | |
| 1962 /* ??? Unwind info is not correct around the CFG unless either a frame | |
| 1963 pointer is present or A_O_A is set. Fixing this requires rewriting | |
| 1964 unwind info generation to be aware of the CFG and propagating states | |
| 1965 around edges. */ | |
| 1966 if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS | |
| 1967 && flag_omit_frame_pointer) | |
| 1968 { | |
| 1969 warning (0, "unwind tables currently require a frame pointer " | |
| 1970 "for correctness"); | |
| 1971 flag_omit_frame_pointer = 0; | |
| 1972 } | |
| 1973 } | |
| 1974 | |
| 1975 /* This function can be called multiple times to reinitialize the compiler | |
| 1976 back end when register classes or instruction sets have changed, | |
| 1977 before each function. */ | |
| 1978 static void | |
| 1979 backend_init_target (void) | |
| 1980 { | |
| 1981 /* Initialize alignment variables. */ | |
| 1982 init_alignments (); | |
| 1983 | |
| 1984 /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target() | |
| 1985 to initialize reg_raw_mode[]. */ | |
| 1986 init_emit_regs (); | |
| 1987 | |
| 1988 /* This invokes target hooks to set fixed_reg[] etc, which is | |
| 1989 mode-dependent. */ | |
| 1990 init_regs (); | |
| 1991 | |
| 1992 /* This depends on stack_pointer_rtx. */ | |
| 1993 init_fake_stack_mems (); | |
| 1994 | |
| 1995 /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is | |
| 1996 mode-dependent. */ | |
| 1997 init_alias_target (); | |
| 1998 | |
| 1999 /* Depends on HARD_FRAME_POINTER_REGNUM. */ | |
| 2000 init_reload (); | |
| 2001 | |
| 2002 /* The following initialization functions need to generate rtl, so | |
| 2003 provide a dummy function context for them. */ | |
| 2004 init_dummy_function_start (); | |
| 2005 | |
| 2006 /* rtx_cost is mode-dependent, so cached values need to be recomputed | |
| 2007 on a mode change. */ | |
| 2008 init_expmed (); | |
| 2009 | |
| 2010 /* We may need to recompute regno_save_code[] and regno_restore_code[] | |
| 2011 after a mode change as well. */ | |
| 2012 if (flag_caller_saves) | |
| 2013 init_caller_save (); | |
| 2014 expand_dummy_function_end (); | |
| 2015 } | |
| 2016 | |
| 2017 /* Initialize the compiler back end. This function is called only once, | |
| 2018 when starting the compiler. */ | |
| 2019 static void | |
| 2020 backend_init (void) | |
| 2021 { | |
| 2022 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL | |
| 2023 || debug_info_level == DINFO_LEVEL_VERBOSE | |
| 2024 #ifdef VMS_DEBUGGING_INFO | |
| 2025 /* Enable line number info for traceback. */ | |
| 2026 || debug_info_level > DINFO_LEVEL_NONE | |
| 2027 #endif | |
| 2028 || flag_test_coverage); | |
| 2029 | |
| 2030 init_rtlanal (); | |
| 2031 init_inline_once (); | |
| 2032 init_varasm_once (); | |
| 2033 save_register_info (); | |
| 2034 | |
| 2035 /* Initialize the target-specific back end pieces. */ | |
| 2036 ira_init_once (); | |
| 2037 backend_init_target (); | |
| 2038 } | |
| 2039 | |
| 2040 /* Initialize things that are both lang-dependent and target-dependent. | |
| 2041 This function can be called more than once if target parameters change. */ | |
| 2042 static void | |
| 2043 lang_dependent_init_target (void) | |
| 2044 { | |
| 2045 /* This creates various _DECL nodes, so needs to be called after the | |
| 2046 front end is initialized. It also depends on the HAVE_xxx macros | |
| 2047 generated from the target machine description. */ | |
| 2048 init_optabs (); | |
| 2049 | |
| 2050 /* The following initialization functions need to generate rtl, so | |
| 2051 provide a dummy function context for them. */ | |
| 2052 init_dummy_function_start (); | |
| 2053 | |
| 2054 /* Do the target-specific parts of expr initialization. */ | |
| 2055 init_expr_target (); | |
| 2056 | |
| 2057 /* Although the actions of these functions are language-independent, | |
| 2058 they use optabs, so we cannot call them from backend_init. */ | |
| 2059 init_set_costs (); | |
| 2060 ira_init (); | |
| 2061 | |
| 2062 expand_dummy_function_end (); | |
| 2063 } | |
| 2064 | |
| 2065 /* Language-dependent initialization. Returns nonzero on success. */ | |
| 2066 static int | |
| 2067 lang_dependent_init (const char *name) | |
| 2068 { | |
| 2069 location_t save_loc = input_location; | |
| 2070 if (dump_base_name == 0) | |
| 2071 dump_base_name = name && name[0] ? name : "gccdump"; | |
| 2072 | |
| 2073 /* Other front-end initialization. */ | |
| 2074 input_location = BUILTINS_LOCATION; | |
| 2075 if (lang_hooks.init () == 0) | |
| 2076 return 0; | |
| 2077 input_location = save_loc; | |
| 2078 | |
| 2079 init_asm_output (name); | |
| 2080 | |
| 2081 /* This creates various _DECL nodes, so needs to be called after the | |
| 2082 front end is initialized. */ | |
| 2083 init_eh (); | |
| 2084 | |
| 2085 /* Do the target-specific parts of the initialization. */ | |
| 2086 lang_dependent_init_target (); | |
| 2087 | |
| 2088 /* If dbx symbol table desired, initialize writing it and output the | |
| 2089 predefined types. */ | |
| 2090 timevar_push (TV_SYMOUT); | |
| 2091 | |
| 2092 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO | |
| 2093 if (dwarf2out_do_frame ()) | |
| 2094 dwarf2out_frame_init (); | |
| 2095 #endif | |
| 2096 | |
| 2097 /* Now we have the correct original filename, we can initialize | |
| 2098 debug output. */ | |
| 2099 (*debug_hooks->init) (name); | |
| 2100 | |
| 2101 timevar_pop (TV_SYMOUT); | |
| 2102 | |
| 2103 return 1; | |
| 2104 } | |
| 2105 | |
| 2106 | |
| 2107 /* Reinitialize everything when target parameters, such as register usage, | |
| 2108 have changed. */ | |
| 2109 void | |
| 2110 target_reinit (void) | |
| 2111 { | |
| 2112 /* Reinitialize RTL backend. */ | |
| 2113 backend_init_target (); | |
| 2114 | |
| 2115 /* Reinitialize lang-dependent parts. */ | |
| 2116 lang_dependent_init_target (); | |
| 2117 } | |
| 2118 | |
| 2119 void | |
| 2120 dump_memory_report (bool final) | |
| 2121 { | |
| 2122 ggc_print_statistics (); | |
| 2123 stringpool_statistics (); | |
| 2124 dump_tree_statistics (); | |
| 2125 dump_gimple_statistics (); | |
| 2126 dump_rtx_statistics (); | |
| 2127 dump_varray_statistics (); | |
| 2128 dump_alloc_pool_statistics (); | |
| 2129 dump_bitmap_statistics (); | |
| 2130 dump_vec_loc_statistics (); | |
| 2131 dump_ggc_loc_statistics (final); | |
| 2132 } | |
| 2133 | |
| 2134 /* Clean up: close opened files, etc. */ | |
| 2135 | |
| 2136 static void | |
| 2137 finalize (void) | |
| 2138 { | |
| 2139 /* Close the dump files. */ | |
| 2140 if (flag_gen_aux_info) | |
| 2141 { | |
| 2142 fclose (aux_info_file); | |
| 2143 if (errorcount) | |
| 2144 unlink (aux_info_file_name); | |
| 2145 } | |
| 2146 | |
| 2147 /* Close non-debugging input and output files. Take special care to note | |
| 2148 whether fclose returns an error, since the pages might still be on the | |
| 2149 buffer chain while the file is open. */ | |
| 2150 | |
| 2151 if (asm_out_file) | |
| 2152 { | |
| 2153 if (ferror (asm_out_file) != 0) | |
| 2154 fatal_error ("error writing to %s: %m", asm_file_name); | |
| 2155 if (fclose (asm_out_file) != 0) | |
| 2156 fatal_error ("error closing %s: %m", asm_file_name); | |
| 2157 } | |
| 2158 | |
| 2159 statistics_fini (); | |
| 2160 finish_optimization_passes (); | |
| 2161 | |
| 2162 ira_finish_once (); | |
| 2163 | |
| 2164 if (mem_report) | |
| 2165 dump_memory_report (true); | |
| 2166 | |
| 2167 /* Language-specific end of compilation actions. */ | |
| 2168 lang_hooks.finish (); | |
| 2169 } | |
| 2170 | |
| 2171 /* Initialize the compiler, and compile the input file. */ | |
| 2172 static void | |
| 2173 do_compile (void) | |
| 2174 { | |
| 2175 /* Initialize timing first. The C front ends read the main file in | |
| 2176 the post_options hook, and C++ does file timings. */ | |
| 2177 if (time_report || !quiet_flag || flag_detailed_statistics) | |
| 2178 timevar_init (); | |
| 2179 timevar_start (TV_TOTAL); | |
| 2180 | |
| 2181 process_options (); | |
| 2182 | |
| 2183 /* Don't do any more if an error has already occurred. */ | |
| 2184 if (!errorcount) | |
| 2185 { | |
| 2186 /* This must be run always, because it is needed to compute the FP | |
| 2187 predefined macros, such as __LDBL_MAX__, for targets using non | |
| 2188 default FP formats. */ | |
| 2189 init_adjust_machine_modes (); | |
| 2190 | |
| 2191 /* Set up the back-end if requested. */ | |
| 2192 if (!no_backend) | |
| 2193 backend_init (); | |
| 2194 | |
| 2195 /* Language-dependent initialization. Returns true on success. */ | |
| 2196 if (lang_dependent_init (main_input_filename)) | |
| 2197 compile_file (); | |
| 2198 | |
| 2199 finalize (); | |
| 2200 } | |
| 2201 | |
| 2202 /* Stop timing and print the times. */ | |
| 2203 timevar_stop (TV_TOTAL); | |
| 2204 timevar_print (stderr); | |
| 2205 } | |
| 2206 | |
| 2207 /* Entry point of cc1, cc1plus, jc1, f771, etc. | |
| 2208 Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
| 2209 any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
| 2210 | |
| 2211 It is not safe to call this function more than once. */ | |
| 2212 | |
| 2213 int | |
| 2214 toplev_main (unsigned int argc, const char **argv) | |
| 2215 { | |
| 2216 save_argv = argv; | |
| 2217 | |
| 2218 /* Initialization of GCC's environment, and diagnostics. */ | |
| 2219 general_init (argv[0]); | |
| 2220 | |
| 2221 /* Parse the options and do minimal processing; basically just | |
| 2222 enough to default flags appropriately. */ | |
| 2223 decode_options (argc, argv); | |
| 2224 | |
| 2225 init_local_tick (); | |
| 2226 | |
| 2227 /* Exit early if we can (e.g. -help). */ | |
| 2228 if (!exit_after_options) | |
| 2229 do_compile (); | |
| 2230 | |
| 2231 if (warningcount || errorcount) | |
| 2232 print_ignored_options (); | |
| 2233 | |
| 2234 if (errorcount || sorrycount) | |
| 2235 return (FATAL_EXIT_CODE); | |
| 2236 | |
| 2237 return (SUCCESS_EXIT_CODE); | |
| 2238 } |