Mercurial > hg > CbC > CbC_gcc
annotate gcc/toplev.c @ 59:5b5b9ea5b220
fix
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 15 Feb 2010 17:22:24 +0900 |
| parents | 77e2b8dfacca |
| children | b7f97abdc517 |
| 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, | |
|
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3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
| 0 | 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" | |
|
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87 #include "tree-ssa-alias.h" |
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88 #include "plugin.h" |
| 0 | 89 |
| 90 #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
| 91 #include "dwarf2out.h" | |
| 92 #endif | |
| 93 | |
| 94 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) | |
| 95 #include "dbxout.h" | |
| 96 #endif | |
| 97 | |
| 98 #ifdef SDB_DEBUGGING_INFO | |
| 99 #include "sdbout.h" | |
| 100 #endif | |
| 101 | |
| 102 #ifdef XCOFF_DEBUGGING_INFO | |
| 103 #include "xcoffout.h" /* Needed for external data | |
| 104 declarations for e.g. AIX 4.x. */ | |
| 105 #endif | |
| 106 | |
| 107 static void general_init (const char *); | |
| 108 static void do_compile (void); | |
| 109 static void process_options (void); | |
| 110 static void backend_init (void); | |
| 111 static int lang_dependent_init (const char *); | |
| 112 static void init_asm_output (const char *); | |
| 113 static void finalize (void); | |
| 114 | |
| 115 static void crash_signal (int) ATTRIBUTE_NORETURN; | |
| 116 static void setup_core_dumping (void); | |
| 117 static void compile_file (void); | |
| 118 | |
| 119 /* Nonzero to dump debug info whilst parsing (-dy option). */ | |
| 120 static int set_yydebug; | |
| 121 | |
| 122 /* True if we don't need a backend (e.g. preprocessing only). */ | |
| 123 static bool no_backend; | |
| 124 | |
| 125 /* Length of line when printing switch values. */ | |
| 126 #define MAX_LINE 75 | |
| 127 | |
| 128 /* Name of program invoked, sans directories. */ | |
| 129 | |
| 130 const char *progname; | |
| 131 | |
| 132 /* Copy of argument vector to toplev_main. */ | |
| 133 static const char **save_argv; | |
| 134 | |
| 135 /* Name of top-level original source file (what was input to cpp). | |
| 136 This comes from the #-command at the beginning of the actual input. | |
| 137 If there isn't any there, then this is the cc1 input file name. */ | |
| 138 | |
| 139 const char *main_input_filename; | |
| 140 | |
| 141 /* Used to enable -fvar-tracking, -fweb and -frename-registers according | |
| 142 to optimize and default_debug_hooks in process_options (). */ | |
| 143 #define AUTODETECT_VALUE 2 | |
| 144 | |
| 145 /* Current position in real source file. */ | |
| 146 | |
| 147 location_t input_location; | |
| 148 | |
| 149 struct line_maps *line_table; | |
| 150 | |
| 151 /* Name to use as base of names for dump output files. */ | |
| 152 | |
| 153 const char *dump_base_name; | |
| 154 | |
| 155 /* Name to use as a base for auxiliary output files. */ | |
| 156 | |
| 157 const char *aux_base_name; | |
| 158 | |
| 159 /* Prefix for profile data files */ | |
| 160 const char *profile_data_prefix; | |
| 161 | |
| 162 /* A mask of target_flags that includes bit X if X was set or cleared | |
| 163 on the command line. */ | |
| 164 | |
| 165 int target_flags_explicit; | |
| 166 | |
| 167 /* Debug hooks - dependent upon command line options. */ | |
| 168 | |
| 169 const struct gcc_debug_hooks *debug_hooks; | |
| 170 | |
| 171 /* Debug hooks - target default. */ | |
| 172 | |
| 173 static const struct gcc_debug_hooks *default_debug_hooks; | |
| 174 | |
| 175 /* Other flags saying which kinds of debugging dump have been requested. */ | |
| 176 | |
| 177 int rtl_dump_and_exit; | |
| 178 int flag_print_asm_name; | |
| 179 enum graph_dump_types graph_dump_format; | |
| 180 | |
| 181 /* Name for output file of assembly code, specified with -o. */ | |
| 182 | |
| 183 const char *asm_file_name; | |
| 184 | |
| 185 /* Nonzero means do optimizations. -O. | |
| 186 Particular numeric values stand for particular amounts of optimization; | |
| 187 thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
| 188 ones are not controlled directly by this variable. Instead, they are | |
| 189 controlled by individual `flag_...' variables that are defaulted | |
| 190 based on this variable. */ | |
| 191 | |
| 192 int optimize = 0; | |
| 193 | |
| 194 /* Nonzero means optimize for size. -Os. | |
| 195 The only valid values are zero and nonzero. When optimize_size is | |
| 196 nonzero, optimize defaults to 2, but certain individual code | |
| 197 bloating optimizations are disabled. */ | |
| 198 | |
| 199 int optimize_size = 0; | |
| 200 | |
|
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201 /* True if this is the lto front end. This is used to disable |
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202 gimple generation and lowering passes that are normally run on the |
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203 output of a front end. These passes must be bypassed for lto since |
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204 they have already been done before the gimple was written. */ |
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205 |
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206 bool in_lto_p = false; |
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207 |
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208 /* Nonzero if we should write GIMPLE bytecode for link-time optimization. */ |
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209 |
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210 int flag_generate_lto; |
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211 |
| 0 | 212 /* The FUNCTION_DECL for the function currently being compiled, |
| 213 or 0 if between functions. */ | |
| 214 tree current_function_decl; | |
| 215 | |
| 216 /* Set to the FUNC_BEGIN label of the current function, or NULL | |
| 217 if none. */ | |
| 218 const char * current_function_func_begin_label; | |
| 219 | |
| 220 /* Nonzero means to collect statistics which might be expensive | |
| 221 and to print them when we are done. */ | |
| 222 int flag_detailed_statistics = 0; | |
| 223 | |
| 224 /* A random sequence of characters, unless overridden by user. */ | |
| 225 static const char *flag_random_seed; | |
| 226 | |
| 227 /* A local time stamp derived from the time of compilation. It will be | |
| 228 zero if the system cannot provide a time. It will be -1u, if the | |
| 229 user has specified a particular random seed. */ | |
| 230 unsigned local_tick; | |
| 231 | |
| 232 /* -f flags. */ | |
| 233 | |
| 234 /* Nonzero means `char' should be signed. */ | |
| 235 | |
| 236 int flag_signed_char; | |
| 237 | |
| 238 /* Nonzero means give an enum type only as many bytes as it needs. A value | |
| 239 of 2 means it has not yet been initialized. */ | |
| 240 | |
| 241 int flag_short_enums; | |
| 242 | |
| 243 /* Nonzero if structures and unions should be returned in memory. | |
| 244 | |
| 245 This should only be defined if compatibility with another compiler or | |
| 246 with an ABI is needed, because it results in slower code. */ | |
| 247 | |
| 248 #ifndef DEFAULT_PCC_STRUCT_RETURN | |
| 249 #define DEFAULT_PCC_STRUCT_RETURN 1 | |
| 250 #endif | |
| 251 | |
| 252 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ | |
| 253 | |
| 254 int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; | |
| 255 | |
| 256 /* 0 means straightforward implementation of complex divide acceptable. | |
| 257 1 means wide ranges of inputs must work for complex divide. | |
| 258 2 means C99-like requirements for complex multiply and divide. */ | |
| 259 | |
| 260 int flag_complex_method = 1; | |
| 261 | |
| 262 /* Nonzero means we should be saving declaration info into a .X file. */ | |
| 263 | |
| 264 int flag_gen_aux_info = 0; | |
| 265 | |
| 266 /* Specified name of aux-info file. */ | |
| 267 | |
| 268 const char *aux_info_file_name; | |
| 269 | |
| 270 /* Nonzero if we are compiling code for a shared library, zero for | |
| 271 executable. */ | |
| 272 | |
| 273 int flag_shlib; | |
| 274 | |
| 275 /* Generate code for GNU or NeXT Objective-C runtime environment. */ | |
| 276 | |
| 277 #ifdef NEXT_OBJC_RUNTIME | |
| 278 int flag_next_runtime = 1; | |
| 279 #else | |
| 280 int flag_next_runtime = 0; | |
| 281 #endif | |
| 282 | |
| 283 /* Set to the default thread-local storage (tls) model to use. */ | |
| 284 | |
| 285 enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
| 286 | |
| 287 /* Set the default region and algorithm for the integrated register | |
| 288 allocator. */ | |
| 289 | |
| 290 enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB; | |
| 291 enum ira_region flag_ira_region = IRA_REGION_MIXED; | |
| 292 | |
| 293 /* Set the default value for -fira-verbose. */ | |
| 294 | |
| 295 unsigned int flag_ira_verbose = 5; | |
| 296 | |
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297 /* Set the default for excess precision. */ |
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298 |
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299 enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT; |
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300 enum excess_precision flag_excess_precision = EXCESS_PRECISION_DEFAULT; |
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301 |
| 0 | 302 /* Nonzero means change certain warnings into errors. |
| 303 Usually these are warnings about failure to conform to some standard. */ | |
| 304 | |
| 305 int flag_pedantic_errors = 0; | |
| 306 | |
| 307 /* Nonzero means make permerror produce warnings instead of errors. */ | |
| 308 | |
| 309 int flag_permissive = 0; | |
| 310 | |
| 311 /* -dA causes debug commentary information to be produced in | |
| 312 the generated assembly code (to make it more readable). This option | |
| 313 is generally only of use to those who actually need to read the | |
| 314 generated assembly code (perhaps while debugging the compiler itself). | |
| 315 Currently, this switch is only used by dwarfout.c; however, it is intended | |
| 316 to be a catchall for printing debug information in the assembler file. */ | |
| 317 | |
| 318 int flag_debug_asm = 0; | |
| 319 | |
| 320 /* -dP causes the rtl to be emitted as a comment in assembly. */ | |
| 321 | |
| 322 int flag_dump_rtl_in_asm = 0; | |
| 323 | |
| 324 /* When non-NULL, indicates that whenever space is allocated on the | |
| 325 stack, the resulting stack pointer must not pass this | |
| 326 address---that is, for stacks that grow downward, the stack pointer | |
| 327 must always be greater than or equal to this address; for stacks | |
| 328 that grow upward, the stack pointer must be less than this address. | |
| 329 At present, the rtx may be either a REG or a SYMBOL_REF, although | |
| 330 the support provided depends on the backend. */ | |
| 331 rtx stack_limit_rtx; | |
| 332 | |
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333 /* Positive if we should track variables, negative if we should run |
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334 the var-tracking pass only to discard debug annotations, zero if |
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335 we're not to run it. When flag_var_tracking == AUTODETECT_VALUE it |
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336 will be set according to optimize, debug_info_level and debug_hooks |
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337 in process_options (). */ |
| 0 | 338 int flag_var_tracking = AUTODETECT_VALUE; |
| 339 | |
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340 /* Positive if we should track variables at assignments, negative if |
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341 we should run the var-tracking pass only to discard debug |
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342 annotations. When flag_var_tracking_assignments == |
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343 AUTODETECT_VALUE it will be set according to flag_var_tracking. */ |
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344 int flag_var_tracking_assignments = AUTODETECT_VALUE; |
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345 |
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346 /* Nonzero if we should toggle flag_var_tracking_assignments after |
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347 processing options and computing its default. */ |
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348 int flag_var_tracking_assignments_toggle = 0; |
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349 |
| 0 | 350 /* Type of stack check. */ |
| 351 enum stack_check_type flag_stack_check = NO_STACK_CHECK; | |
| 352 | |
| 353 /* True if the user has tagged the function with the 'section' | |
| 354 attribute. */ | |
| 355 | |
| 356 bool user_defined_section_attribute = false; | |
| 357 | |
| 358 /* Values of the -falign-* flags: how much to align labels in code. | |
| 359 0 means `use default', 1 means `don't align'. | |
| 360 For each variable, there is an _log variant which is the power | |
| 361 of two not less than the variable, for .align output. */ | |
| 362 | |
| 363 int align_loops_log; | |
| 364 int align_loops_max_skip; | |
| 365 int align_jumps_log; | |
| 366 int align_jumps_max_skip; | |
| 367 int align_labels_log; | |
| 368 int align_labels_max_skip; | |
| 369 int align_functions_log; | |
| 370 | |
| 371 typedef struct | |
| 372 { | |
| 373 const char *const string; | |
| 374 int *const variable; | |
| 375 const int on_value; | |
| 376 } | |
| 377 lang_independent_options; | |
| 378 | |
| 379 /* Nonzero if subexpressions must be evaluated from left-to-right. */ | |
| 380 int flag_evaluation_order = 0; | |
| 381 | |
| 382 /* The user symbol prefix after having resolved same. */ | |
| 383 const char *user_label_prefix; | |
| 384 | |
| 385 static const param_info lang_independent_params[] = { | |
| 386 #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ | |
| 387 { OPTION, DEFAULT, false, MIN, MAX, HELP }, | |
| 388 #include "params.def" | |
| 389 #undef DEFPARAM | |
| 390 { NULL, 0, false, 0, 0, NULL } | |
| 391 }; | |
| 392 | |
| 393 /* Output files for assembler code (real compiler output) | |
| 394 and debugging dumps. */ | |
| 395 | |
| 396 FILE *asm_out_file; | |
| 397 FILE *aux_info_file; | |
| 398 FILE *dump_file = NULL; | |
| 399 const char *dump_file_name; | |
| 400 | |
| 401 /* The current working directory of a translation. It's generally the | |
| 402 directory from which compilation was initiated, but a preprocessed | |
| 403 file may specify the original directory in which it was | |
| 404 created. */ | |
| 405 | |
| 406 static const char *src_pwd; | |
| 407 | |
| 408 /* Initialize src_pwd with the given string, and return true. If it | |
| 409 was already initialized, return false. As a special case, it may | |
| 410 be called with a NULL argument to test whether src_pwd has NOT been | |
| 411 initialized yet. */ | |
| 412 | |
| 413 bool | |
| 414 set_src_pwd (const char *pwd) | |
| 415 { | |
| 416 if (src_pwd) | |
| 417 { | |
| 418 if (strcmp (src_pwd, pwd) == 0) | |
| 419 return true; | |
| 420 else | |
| 421 return false; | |
| 422 } | |
| 423 | |
| 424 src_pwd = xstrdup (pwd); | |
| 425 return true; | |
| 426 } | |
| 427 | |
| 428 /* Return the directory from which the translation unit was initiated, | |
| 429 in case set_src_pwd() was not called before to assign it a | |
| 430 different value. */ | |
| 431 | |
| 432 const char * | |
| 433 get_src_pwd (void) | |
| 434 { | |
| 435 if (! src_pwd) | |
| 436 { | |
| 437 src_pwd = getpwd (); | |
| 438 if (!src_pwd) | |
| 439 src_pwd = "."; | |
| 440 } | |
| 441 | |
| 442 return src_pwd; | |
| 443 } | |
| 444 | |
| 445 /* Called when the start of a function definition is parsed, | |
| 446 this function prints on stderr the name of the function. */ | |
| 447 void | |
| 448 announce_function (tree decl) | |
| 449 { | |
| 450 if (!quiet_flag) | |
| 451 { | |
| 452 if (rtl_dump_and_exit) | |
|
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453 fprintf (stderr, "%s ", |
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454 identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl)))); |
| 0 | 455 else |
|
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456 fprintf (stderr, " %s", |
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457 identifier_to_locale (lang_hooks.decl_printable_name (decl, 2))); |
| 0 | 458 fflush (stderr); |
| 459 pp_needs_newline (global_dc->printer) = true; | |
| 460 diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); | |
| 461 } | |
| 462 } | |
| 463 | |
| 464 /* Initialize local_tick with the time of day, or -1 if | |
| 465 flag_random_seed is set. */ | |
| 466 | |
| 467 static void | |
| 468 init_local_tick (void) | |
| 469 { | |
| 470 if (!flag_random_seed) | |
| 471 { | |
| 472 /* Get some more or less random data. */ | |
| 473 #ifdef HAVE_GETTIMEOFDAY | |
| 474 { | |
| 475 struct timeval tv; | |
| 476 | |
| 477 gettimeofday (&tv, NULL); | |
| 478 local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
| 479 } | |
| 480 #else | |
| 481 { | |
| 482 time_t now = time (NULL); | |
| 483 | |
| 484 if (now != (time_t)-1) | |
| 485 local_tick = (unsigned) now; | |
| 486 } | |
| 487 #endif | |
| 488 } | |
| 489 else | |
| 490 local_tick = -1; | |
| 491 } | |
| 492 | |
| 493 /* Set up a default flag_random_seed and local_tick, unless the user | |
| 494 already specified one. Must be called after init_local_tick. */ | |
| 495 | |
| 496 static void | |
| 497 init_random_seed (void) | |
| 498 { | |
| 499 unsigned HOST_WIDE_INT value; | |
| 500 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
| 501 | |
| 502 value = local_tick ^ getpid (); | |
| 503 | |
| 504 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
| 505 flag_random_seed = random_seed; | |
| 506 } | |
| 507 | |
| 508 /* Obtain the random_seed string. Unless NOINIT, initialize it if | |
| 509 it's not provided in the command line. */ | |
| 510 | |
| 511 const char * | |
| 512 get_random_seed (bool noinit) | |
| 513 { | |
| 514 if (!flag_random_seed && !noinit) | |
| 515 init_random_seed (); | |
| 516 return flag_random_seed; | |
| 517 } | |
| 518 | |
| 519 /* Modify the random_seed string to VAL. Return its previous | |
| 520 value. */ | |
| 521 | |
| 522 const char * | |
| 523 set_random_seed (const char *val) | |
| 524 { | |
| 525 const char *old = flag_random_seed; | |
| 526 flag_random_seed = val; | |
| 527 return old; | |
| 528 } | |
| 529 | |
| 530 /* Decode the string P as an integral parameter. | |
| 531 If the string is indeed an integer return its numeric value else | |
| 532 issue an Invalid Option error for the option PNAME and return DEFVAL. | |
| 533 If PNAME is zero just return DEFVAL, do not call error. */ | |
| 534 | |
| 535 int | |
| 536 read_integral_parameter (const char *p, const char *pname, const int defval) | |
| 537 { | |
| 538 const char *endp = p; | |
| 539 | |
| 540 while (*endp) | |
| 541 { | |
| 542 if (ISDIGIT (*endp)) | |
| 543 endp++; | |
| 544 else | |
| 545 break; | |
| 546 } | |
| 547 | |
| 548 if (*endp != 0) | |
| 549 { | |
| 550 if (pname != 0) | |
| 551 error ("invalid option argument %qs", pname); | |
| 552 return defval; | |
| 553 } | |
| 554 | |
| 555 return atoi (p); | |
| 556 } | |
| 557 | |
|
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558 #if GCC_VERSION < 3004 |
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559 |
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560 /* The functions floor_log2 and exact_log2 are defined as inline |
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561 functions in toplev.h if GCC_VERSION >= 3004. The definitions here |
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562 are used for older versions of gcc. */ |
| 0 | 563 |
| 564 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
| 565 If X is 0, return -1. */ | |
| 566 | |
| 567 int | |
| 568 floor_log2 (unsigned HOST_WIDE_INT x) | |
| 569 { | |
| 570 int t = 0; | |
| 571 | |
| 572 if (x == 0) | |
| 573 return -1; | |
| 574 | |
| 575 if (HOST_BITS_PER_WIDE_INT > 64) | |
| 576 if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) | |
| 577 t += 64; | |
| 578 if (HOST_BITS_PER_WIDE_INT > 32) | |
| 579 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) | |
| 580 t += 32; | |
| 581 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) | |
| 582 t += 16; | |
| 583 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) | |
| 584 t += 8; | |
| 585 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) | |
| 586 t += 4; | |
| 587 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) | |
| 588 t += 2; | |
| 589 if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) | |
| 590 t += 1; | |
| 591 | |
| 592 return t; | |
| 593 } | |
| 594 | |
| 595 /* Return the logarithm of X, base 2, considering X unsigned, | |
| 596 if X is a power of 2. Otherwise, returns -1. */ | |
| 597 | |
| 598 int | |
| 599 exact_log2 (unsigned HOST_WIDE_INT x) | |
| 600 { | |
| 601 if (x != (x & -x)) | |
| 602 return -1; | |
| 603 return floor_log2 (x); | |
| 604 } | |
| 605 | |
|
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606 #endif /* GCC_VERSION < 3004 */ |
| 0 | 607 |
| 608 /* Handler for fatal signals, such as SIGSEGV. These are transformed | |
| 609 into ICE messages, which is much more user friendly. In case the | |
| 610 error printer crashes, reset the signal to prevent infinite recursion. */ | |
| 611 | |
| 612 static void | |
| 613 crash_signal (int signo) | |
| 614 { | |
| 615 signal (signo, SIG_DFL); | |
| 616 | |
| 617 /* If we crashed while processing an ASM statement, then be a little more | |
| 618 graceful. It's most likely the user's fault. */ | |
| 619 if (this_is_asm_operands) | |
| 620 { | |
| 621 output_operand_lossage ("unrecoverable error"); | |
| 622 exit (FATAL_EXIT_CODE); | |
| 623 } | |
| 624 | |
| 625 internal_error ("%s", strsignal (signo)); | |
| 626 } | |
| 627 | |
| 628 /* Arrange to dump core on error. (The regular error message is still | |
| 629 printed first, except in the case of abort().) */ | |
| 630 | |
| 631 static void | |
| 632 setup_core_dumping (void) | |
| 633 { | |
| 634 #ifdef SIGABRT | |
| 635 signal (SIGABRT, SIG_DFL); | |
| 636 #endif | |
| 637 #if defined(HAVE_SETRLIMIT) | |
| 638 { | |
| 639 struct rlimit rlim; | |
| 640 if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
| 641 fatal_error ("getting core file size maximum limit: %m"); | |
| 642 rlim.rlim_cur = rlim.rlim_max; | |
| 643 if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
| 644 fatal_error ("setting core file size limit to maximum: %m"); | |
| 645 } | |
| 646 #endif | |
| 647 diagnostic_abort_on_error (global_dc); | |
| 648 } | |
| 649 | |
| 650 | |
| 651 /* Strip off a legitimate source ending from the input string NAME of | |
| 652 length LEN. Rather than having to know the names used by all of | |
| 653 our front ends, we strip off an ending of a period followed by | |
| 654 up to five characters. (Java uses ".class".) */ | |
| 655 | |
| 656 void | |
| 657 strip_off_ending (char *name, int len) | |
| 658 { | |
| 659 int i; | |
| 660 for (i = 2; i < 6 && len > i; i++) | |
| 661 { | |
| 662 if (name[len - i] == '.') | |
| 663 { | |
| 664 name[len - i] = '\0'; | |
| 665 break; | |
| 666 } | |
| 667 } | |
| 668 } | |
| 669 | |
| 670 /* Output a quoted string. */ | |
| 671 | |
| 672 void | |
| 673 output_quoted_string (FILE *asm_file, const char *string) | |
| 674 { | |
| 675 #ifdef OUTPUT_QUOTED_STRING | |
| 676 OUTPUT_QUOTED_STRING (asm_file, string); | |
| 677 #else | |
| 678 char c; | |
| 679 | |
| 680 putc ('\"', asm_file); | |
| 681 while ((c = *string++) != 0) | |
| 682 { | |
| 683 if (ISPRINT (c)) | |
| 684 { | |
| 685 if (c == '\"' || c == '\\') | |
| 686 putc ('\\', asm_file); | |
| 687 putc (c, asm_file); | |
| 688 } | |
| 689 else | |
| 690 fprintf (asm_file, "\\%03o", (unsigned char) c); | |
| 691 } | |
| 692 putc ('\"', asm_file); | |
| 693 #endif | |
| 694 } | |
| 695 | |
| 696 /* Output a file name in the form wanted by System V. */ | |
| 697 | |
| 698 void | |
| 699 output_file_directive (FILE *asm_file, const char *input_name) | |
| 700 { | |
| 701 int len; | |
| 702 const char *na; | |
| 703 | |
| 704 if (input_name == NULL) | |
| 705 input_name = "<stdin>"; | |
| 706 else | |
| 707 input_name = remap_debug_filename (input_name); | |
| 708 | |
| 709 len = strlen (input_name); | |
| 710 na = input_name + len; | |
| 711 | |
| 712 /* NA gets INPUT_NAME sans directory names. */ | |
| 713 while (na > input_name) | |
| 714 { | |
| 715 if (IS_DIR_SEPARATOR (na[-1])) | |
| 716 break; | |
| 717 na--; | |
| 718 } | |
| 719 | |
| 720 #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
| 721 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
| 722 #else | |
| 723 fprintf (asm_file, "\t.file\t"); | |
| 724 output_quoted_string (asm_file, na); | |
|
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725 putc ('\n', asm_file); |
| 0 | 726 #endif |
| 727 } | |
| 728 | |
| 729 /* A subroutine of wrapup_global_declarations. We've come to the end of | |
| 730 the compilation unit. All deferred variables should be undeferred, | |
| 731 and all incomplete decls should be finalized. */ | |
| 732 | |
| 733 void | |
| 734 wrapup_global_declaration_1 (tree decl) | |
| 735 { | |
| 736 /* We're not deferring this any longer. Assignment is conditional to | |
| 737 avoid needlessly dirtying PCH pages. */ | |
| 738 if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
| 739 && DECL_DEFER_OUTPUT (decl) != 0) | |
| 740 DECL_DEFER_OUTPUT (decl) = 0; | |
| 741 | |
| 742 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
| 743 lang_hooks.finish_incomplete_decl (decl); | |
| 744 } | |
| 745 | |
| 746 /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
| 747 needs to be output. Return true if it is output. */ | |
| 748 | |
| 749 bool | |
| 750 wrapup_global_declaration_2 (tree decl) | |
| 751 { | |
| 752 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
| 753 return false; | |
| 754 | |
| 755 /* Don't write out static consts, unless we still need them. | |
| 756 | |
| 757 We also keep static consts if not optimizing (for debugging), | |
| 758 unless the user specified -fno-keep-static-consts. | |
| 759 ??? They might be better written into the debug information. | |
| 760 This is possible when using DWARF. | |
| 761 | |
| 762 A language processor that wants static constants to be always | |
| 763 written out (even if it is not used) is responsible for | |
| 764 calling rest_of_decl_compilation itself. E.g. the C front-end | |
| 765 calls rest_of_decl_compilation from finish_decl. | |
| 766 One motivation for this is that is conventional in some | |
| 767 environments to write things like: | |
| 768 static const char rcsid[] = "... version string ..."; | |
| 769 intending to force the string to be in the executable. | |
| 770 | |
| 771 A language processor that would prefer to have unneeded | |
| 772 static constants "optimized away" would just defer writing | |
| 773 them out until here. E.g. C++ does this, because static | |
| 774 constants are often defined in header files. | |
| 775 | |
| 776 ??? A tempting alternative (for both C and C++) would be | |
| 777 to force a constant to be written if and only if it is | |
| 778 defined in a main file, as opposed to an include file. */ | |
| 779 | |
| 780 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
| 781 { | |
| 782 struct varpool_node *node; | |
| 783 bool needed = true; | |
| 784 node = varpool_node (decl); | |
| 785 | |
| 786 if (node->finalized) | |
| 787 needed = false; | |
| 788 else if (node->alias) | |
| 789 needed = false; | |
| 790 else if (!cgraph_global_info_ready | |
| 791 && (TREE_USED (decl) | |
| 792 || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
| 793 /* needed */; | |
| 794 else if (node->needed) | |
| 795 /* needed */; | |
| 796 else if (DECL_COMDAT (decl)) | |
| 797 needed = false; | |
| 798 else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
| 799 && (optimize || !flag_keep_static_consts | |
| 800 || DECL_ARTIFICIAL (decl))) | |
| 801 needed = false; | |
| 802 | |
| 803 if (needed) | |
| 804 { | |
| 805 rest_of_decl_compilation (decl, 1, 1); | |
| 806 return true; | |
| 807 } | |
| 808 } | |
| 809 | |
| 810 return false; | |
| 811 } | |
| 812 | |
| 813 /* Do any final processing required for the declarations in VEC, of | |
| 814 which there are LEN. We write out inline functions and variables | |
| 815 that have been deferred until this point, but which are required. | |
| 816 Returns nonzero if anything was put out. */ | |
| 817 | |
| 818 bool | |
| 819 wrapup_global_declarations (tree *vec, int len) | |
| 820 { | |
| 821 bool reconsider, output_something = false; | |
| 822 int i; | |
| 823 | |
| 824 for (i = 0; i < len; i++) | |
| 825 wrapup_global_declaration_1 (vec[i]); | |
| 826 | |
| 827 /* Now emit any global variables or functions that we have been | |
| 828 putting off. We need to loop in case one of the things emitted | |
| 829 here references another one which comes earlier in the list. */ | |
| 830 do | |
| 831 { | |
| 832 reconsider = false; | |
| 833 for (i = 0; i < len; i++) | |
| 834 reconsider |= wrapup_global_declaration_2 (vec[i]); | |
| 835 if (reconsider) | |
| 836 output_something = true; | |
| 837 } | |
| 838 while (reconsider); | |
| 839 | |
| 840 return output_something; | |
| 841 } | |
| 842 | |
| 843 /* A subroutine of check_global_declarations. Issue appropriate warnings | |
| 844 for the global declaration DECL. */ | |
| 845 | |
| 846 void | |
| 847 check_global_declaration_1 (tree decl) | |
| 848 { | |
| 849 /* Warn about any function declared static but not defined. We don't | |
| 850 warn about variables, because many programs have static variables | |
| 851 that exist only to get some text into the object file. */ | |
| 852 if (TREE_CODE (decl) == FUNCTION_DECL | |
| 853 && DECL_INITIAL (decl) == 0 | |
| 854 && DECL_EXTERNAL (decl) | |
| 855 && ! DECL_ARTIFICIAL (decl) | |
| 856 && ! TREE_NO_WARNING (decl) | |
| 857 && ! TREE_PUBLIC (decl) | |
| 858 && (warn_unused_function | |
| 859 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
| 860 { | |
| 861 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
| 862 pedwarn (input_location, 0, "%q+F used but never defined", decl); | |
| 863 else | |
| 864 warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl); | |
| 865 /* This symbol is effectively an "extern" declaration now. */ | |
| 866 TREE_PUBLIC (decl) = 1; | |
| 867 assemble_external (decl); | |
| 868 } | |
| 869 | |
| 870 /* Warn about static fns or vars defined but not used. */ | |
| 871 if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
| 872 /* We don't warn about "static const" variables because the | |
| 873 "rcs_id" idiom uses that construction. */ | |
| 874 || (warn_unused_variable | |
| 875 && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
| 876 && ! DECL_IN_SYSTEM_HEADER (decl) | |
| 877 && ! TREE_USED (decl) | |
| 878 /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
| 879 to handle multiple external decls in different scopes. */ | |
| 880 && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) | |
| 881 && ! DECL_EXTERNAL (decl) | |
| 882 && ! TREE_PUBLIC (decl) | |
| 883 /* A volatile variable might be used in some non-obvious way. */ | |
| 884 && ! TREE_THIS_VOLATILE (decl) | |
| 885 /* Global register variables must be declared to reserve them. */ | |
| 886 && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
| 887 /* Otherwise, ask the language. */ | |
| 888 && lang_hooks.decls.warn_unused_global (decl)) | |
|
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889 warning ((TREE_CODE (decl) == FUNCTION_DECL) |
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890 ? OPT_Wunused_function |
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891 : OPT_Wunused_variable, |
| 0 | 892 "%q+D defined but not used", decl); |
| 893 } | |
| 894 | |
| 895 /* Issue appropriate warnings for the global declarations in VEC (of | |
| 896 which there are LEN). */ | |
| 897 | |
| 898 void | |
| 899 check_global_declarations (tree *vec, int len) | |
| 900 { | |
| 901 int i; | |
| 902 | |
| 903 for (i = 0; i < len; i++) | |
| 904 check_global_declaration_1 (vec[i]); | |
| 905 } | |
| 906 | |
| 907 /* Emit debugging information for all global declarations in VEC. */ | |
| 908 | |
| 909 void | |
| 910 emit_debug_global_declarations (tree *vec, int len) | |
| 911 { | |
| 912 int i; | |
| 913 | |
| 914 /* Avoid confusing the debug information machinery when there are errors. */ | |
| 915 if (errorcount != 0 || sorrycount != 0) | |
| 916 return; | |
| 917 | |
| 918 timevar_push (TV_SYMOUT); | |
| 919 for (i = 0; i < len; i++) | |
| 920 debug_hooks->global_decl (vec[i]); | |
| 921 timevar_pop (TV_SYMOUT); | |
| 922 } | |
| 923 | |
| 924 /* Warn about a use of an identifier which was marked deprecated. */ | |
| 925 void | |
|
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926 warn_deprecated_use (tree node, tree attr) |
| 0 | 927 { |
|
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928 const char *msg; |
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
929 |
| 0 | 930 if (node == 0 || !warn_deprecated_decl) |
| 931 return; | |
| 932 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
933 if (!attr) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
934 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
935 if (DECL_P (node)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
936 attr = DECL_ATTRIBUTES (node); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
937 else if (TYPE_P (node)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
938 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
939 tree decl = TYPE_STUB_DECL (node); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
940 if (decl) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
941 attr = lookup_attribute ("deprecated", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
942 TYPE_ATTRIBUTES (TREE_TYPE (decl))); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
943 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
944 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
945 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
946 if (attr) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
947 attr = lookup_attribute ("deprecated", attr); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
948 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
949 if (attr) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
950 msg = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr))); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
951 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
952 msg = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
953 |
| 0 | 954 if (DECL_P (node)) |
| 955 { | |
| 956 expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
957 if (msg) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
958 warning (OPT_Wdeprecated_declarations, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
959 "%qD is deprecated (declared at %s:%d): %s", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
960 node, xloc.file, xloc.line, msg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
961 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
962 warning (OPT_Wdeprecated_declarations, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
963 "%qD is deprecated (declared at %s:%d)", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
964 node, xloc.file, xloc.line); |
| 0 | 965 } |
| 966 else if (TYPE_P (node)) | |
| 967 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
968 tree what = NULL_TREE; |
| 0 | 969 tree decl = TYPE_STUB_DECL (node); |
| 970 | |
| 971 if (TYPE_NAME (node)) | |
| 972 { | |
| 973 if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
974 what = TYPE_NAME (node); |
| 0 | 975 else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL |
| 976 && DECL_NAME (TYPE_NAME (node))) | |
|
55
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update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
977 what = DECL_NAME (TYPE_NAME (node)); |
| 0 | 978 } |
| 979 | |
| 980 if (decl) | |
| 981 { | |
| 982 expanded_location xloc | |
| 983 = expand_location (DECL_SOURCE_LOCATION (decl)); | |
| 984 if (what) | |
|
55
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
985 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
986 if (msg) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
987 warning (OPT_Wdeprecated_declarations, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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19
diff
changeset
|
988 "%qE is deprecated (declared at %s:%d): %s", |
|
77e2b8dfacca
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parents:
19
diff
changeset
|
989 what, xloc.file, xloc.line, msg); |
|
77e2b8dfacca
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parents:
19
diff
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|
990 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
991 warning (OPT_Wdeprecated_declarations, |
|
77e2b8dfacca
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parents:
19
diff
changeset
|
992 "%qE is deprecated (declared at %s:%d)", what, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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19
diff
changeset
|
993 xloc.file, xloc.line); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
994 } |
| 0 | 995 else |
|
55
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parents:
19
diff
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|
996 { |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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19
diff
changeset
|
997 if (msg) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
998 warning (OPT_Wdeprecated_declarations, |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
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|
999 "type is deprecated (declared at %s:%d): %s", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1000 xloc.file, xloc.line, msg); |
|
77e2b8dfacca
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1001 else |
|
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update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
19
diff
changeset
|
1002 warning (OPT_Wdeprecated_declarations, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
19
diff
changeset
|
1003 "type is deprecated (declared at %s:%d)", |
|
77e2b8dfacca
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19
diff
changeset
|
1004 xloc.file, xloc.line); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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19
diff
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|
1005 } |
| 0 | 1006 } |
| 1007 else | |
| 1008 { | |
| 1009 if (what) | |
|
55
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diff
changeset
|
1010 { |
|
77e2b8dfacca
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19
diff
changeset
|
1011 if (msg) |
|
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parents:
19
diff
changeset
|
1012 warning (OPT_Wdeprecated_declarations, "%qE is deprecated: %s", |
|
77e2b8dfacca
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19
diff
changeset
|
1013 what, msg); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1014 else |
|
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update it from 4.4.3 to 4.5.0
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changeset
|
1015 warning (OPT_Wdeprecated_declarations, "%qE is deprecated", what); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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19
diff
changeset
|
1016 } |
| 0 | 1017 else |
|
55
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19
diff
changeset
|
1018 { |
|
77e2b8dfacca
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diff
changeset
|
1019 if (msg) |
|
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diff
changeset
|
1020 warning (OPT_Wdeprecated_declarations, "type is deprecated: %s", |
|
77e2b8dfacca
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19
diff
changeset
|
1021 msg); |
|
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|
1022 else |
|
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changeset
|
1023 warning (OPT_Wdeprecated_declarations, "type is deprecated"); |
|
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diff
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|
1024 } |
| 0 | 1025 } |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 /* Compile an entire translation unit. Write a file of assembly | |
| 1030 output and various debugging dumps. */ | |
| 1031 | |
| 1032 static void | |
| 1033 compile_file (void) | |
| 1034 { | |
| 1035 /* Initialize yet another pass. */ | |
| 1036 | |
| 1037 ggc_protect_identifiers = true; | |
| 1038 | |
| 1039 init_cgraph (); | |
| 1040 init_final (main_input_filename); | |
| 1041 coverage_init (aux_base_name); | |
| 1042 statistics_init (); | |
|
55
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update it from 4.4.3 to 4.5.0
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|
1043 invoke_plugin_callbacks (PLUGIN_START_UNIT, NULL); |
| 0 | 1044 |
| 1045 timevar_push (TV_PARSE); | |
| 1046 | |
| 1047 /* Call the parser, which parses the entire file (calling | |
| 1048 rest_of_compilation for each function). */ | |
| 1049 lang_hooks.parse_file (set_yydebug); | |
| 1050 | |
| 1051 /* Compilation is now finished except for writing | |
| 1052 what's left of the symbol table output. */ | |
| 1053 timevar_pop (TV_PARSE); | |
| 1054 | |
| 1055 if (flag_syntax_only) | |
| 1056 return; | |
| 1057 | |
| 1058 ggc_protect_identifiers = false; | |
| 1059 | |
|
55
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diff
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|
1060 /* This must also call cgraph_finalize_compilation_unit. */ |
| 0 | 1061 lang_hooks.decls.final_write_globals (); |
| 1062 | |
| 1063 if (errorcount || sorrycount) | |
| 1064 return; | |
| 1065 | |
| 1066 varpool_assemble_pending_decls (); | |
| 1067 finish_aliases_2 (); | |
| 1068 | |
| 1069 /* Likewise for mudflap static object registrations. */ | |
| 1070 if (flag_mudflap) | |
| 1071 mudflap_finish_file (); | |
| 1072 | |
| 1073 /* Likewise for emulated thread-local storage. */ | |
| 1074 if (!targetm.have_tls) | |
| 1075 emutls_finish (); | |
| 1076 | |
| 1077 output_shared_constant_pool (); | |
| 1078 output_object_blocks (); | |
| 1079 | |
| 1080 /* Write out any pending weak symbol declarations. */ | |
| 1081 weak_finish (); | |
| 1082 | |
| 1083 /* Do dbx symbols. */ | |
| 1084 timevar_push (TV_SYMOUT); | |
| 1085 | |
| 1086 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO | |
| 1087 if (dwarf2out_do_frame ()) | |
| 1088 dwarf2out_frame_finish (); | |
| 1089 #endif | |
| 1090 | |
| 1091 (*debug_hooks->finish) (main_input_filename); | |
| 1092 timevar_pop (TV_SYMOUT); | |
| 1093 | |
| 1094 /* Output some stuff at end of file if nec. */ | |
| 1095 | |
| 1096 dw2_output_indirect_constants (); | |
| 1097 | |
| 1098 /* Flush any pending external directives. */ | |
| 1099 process_pending_assemble_externals (); | |
| 1100 | |
|
55
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diff
changeset
|
1101 /* Emit LTO marker if LTO info has been previously emitted. This is |
|
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19
diff
changeset
|
1102 used by collect2 to determine whether an object file contains IL. |
|
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19
diff
changeset
|
1103 We used to emit an undefined reference here, but this produces |
|
77e2b8dfacca
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19
diff
changeset
|
1104 link errors if an object file with IL is stored into a shared |
|
77e2b8dfacca
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19
diff
changeset
|
1105 library without invoking lto1. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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19
diff
changeset
|
1106 if (flag_generate_lto) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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diff
changeset
|
1107 fprintf (asm_out_file,"\t.comm\tgnu_lto_v1,1,1\n"); |
|
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parents:
19
diff
changeset
|
1108 |
| 0 | 1109 /* Attach a special .ident directive to the end of the file to identify |
| 1110 the version of GCC which compiled this code. The format of the .ident | |
| 1111 string is patterned after the ones produced by native SVR4 compilers. */ | |
| 1112 #ifdef IDENT_ASM_OP | |
| 1113 if (!flag_no_ident) | |
| 1114 { | |
| 1115 const char *pkg_version = "(GNU) "; | |
| 1116 | |
| 1117 if (strcmp ("(GCC) ", pkgversion_string)) | |
| 1118 pkg_version = pkgversion_string; | |
| 1119 fprintf (asm_out_file, "%s\"GCC: %s%s\"\n", | |
| 1120 IDENT_ASM_OP, pkg_version, version_string); | |
| 1121 } | |
| 1122 #endif | |
| 1123 | |
|
55
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update it from 4.4.3 to 4.5.0
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19
diff
changeset
|
1124 /* Invoke registered plugin callbacks. */ |
|
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update it from 4.4.3 to 4.5.0
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19
diff
changeset
|
1125 invoke_plugin_callbacks (PLUGIN_FINISH_UNIT, NULL); |
|
77e2b8dfacca
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parents:
19
diff
changeset
|
1126 |
| 0 | 1127 /* This must be at the end. Some target ports emit end of file directives |
| 1128 into the assembly file here, and hence we can not output anything to the | |
| 1129 assembly file after this point. */ | |
| 1130 targetm.asm_out.file_end (); | |
| 1131 } | |
| 1132 | |
| 1133 /* Parse a -d... command line switch. */ | |
| 1134 | |
| 1135 void | |
| 1136 decode_d_option (const char *arg) | |
| 1137 { | |
| 1138 int c; | |
| 1139 | |
| 1140 while (*arg) | |
| 1141 switch (c = *arg++) | |
| 1142 { | |
| 1143 case 'A': | |
| 1144 flag_debug_asm = 1; | |
| 1145 break; | |
| 1146 case 'p': | |
| 1147 flag_print_asm_name = 1; | |
| 1148 break; | |
| 1149 case 'P': | |
| 1150 flag_dump_rtl_in_asm = 1; | |
| 1151 flag_print_asm_name = 1; | |
| 1152 break; | |
| 1153 case 'v': | |
| 1154 graph_dump_format = vcg; | |
| 1155 break; | |
| 1156 case 'x': | |
| 1157 rtl_dump_and_exit = 1; | |
| 1158 break; | |
| 1159 case 'y': | |
| 1160 set_yydebug = 1; | |
| 1161 break; | |
| 1162 case 'D': /* These are handled by the preprocessor. */ | |
| 1163 case 'I': | |
| 1164 case 'M': | |
| 1165 case 'N': | |
| 1166 case 'U': | |
| 1167 break; | |
| 1168 case 'H': | |
| 1169 setup_core_dumping(); | |
| 1170 break; | |
| 1171 case 'a': | |
| 1172 enable_rtl_dump_file (); | |
| 1173 break; | |
| 1174 | |
| 1175 default: | |
| 1176 warning (0, "unrecognized gcc debugging option: %c", c); | |
| 1177 break; | |
| 1178 } | |
| 1179 } | |
| 1180 | |
| 1181 /* Indexed by enum debug_info_type. */ | |
| 1182 const char *const debug_type_names[] = | |
| 1183 { | |
| 1184 "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" | |
| 1185 }; | |
| 1186 | |
| 1187 /* Print version information to FILE. | |
| 1188 Each line begins with INDENT (for the case where FILE is the | |
| 1189 assembler output file). */ | |
| 1190 | |
| 1191 void | |
| 1192 print_version (FILE *file, const char *indent) | |
| 1193 { | |
| 1194 static const char fmt1[] = | |
| 1195 #ifdef __GNUC__ | |
| 1196 N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") | |
| 1197 #else | |
| 1198 N_("%s%s%s %sversion %s (%s) compiled by CC, ") | |
| 1199 #endif | |
| 1200 ; | |
| 1201 static const char fmt2[] = | |
|
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1202 N_("GMP version %s, MPFR version %s, MPC version %s\n"); |
| 0 | 1203 static const char fmt3[] = |
| 1204 N_("%s%swarning: %s header version %s differs from library version %s.\n"); | |
| 1205 static const char fmt4[] = | |
| 1206 N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); | |
| 1207 #ifndef __VERSION__ | |
| 1208 #define __VERSION__ "[?]" | |
| 1209 #endif | |
| 1210 fprintf (file, | |
| 1211 file == stderr ? _(fmt1) : fmt1, | |
| 1212 indent, *indent != 0 ? " " : "", | |
| 1213 lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, | |
| 1214 indent, __VERSION__); | |
| 1215 | |
| 1216 /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
|
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1217 two string formats, "i.j.k" and "i.j" when k is zero. As of |
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1218 gmp-4.3.0, GMP always uses the 3 number format. */ |
| 0 | 1219 #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
| 1220 #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X) | |
|
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1221 #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
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1222 #define GCC_GMP_VERSION \ |
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1223 GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) |
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1224 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 |
| 0 | 1225 #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ |
| 1226 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) | |
| 1227 #else | |
| 1228 #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ | |
| 1229 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \ | |
| 1230 GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL) | |
| 1231 #endif | |
| 1232 fprintf (file, | |
| 1233 file == stderr ? _(fmt2) : fmt2, | |
|
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1234 GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING, MPC_VERSION_STRING); |
| 0 | 1235 if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) |
| 1236 fprintf (file, | |
| 1237 file == stderr ? _(fmt3) : fmt3, | |
| 1238 indent, *indent != 0 ? " " : "", | |
| 1239 "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); | |
| 1240 if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
| 1241 fprintf (file, | |
| 1242 file == stderr ? _(fmt3) : fmt3, | |
| 1243 indent, *indent != 0 ? " " : "", | |
| 1244 "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); | |
|
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1245 if (strcmp (MPC_VERSION_STRING, mpc_get_version ())) |
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1246 fprintf (file, |
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1247 file == stderr ? _(fmt3) : fmt3, |
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1248 indent, *indent != 0 ? " " : "", |
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1249 "MPC", MPC_VERSION_STRING, mpc_get_version ()); |
| 0 | 1250 fprintf (file, |
| 1251 file == stderr ? _(fmt4) : fmt4, | |
| 1252 indent, *indent != 0 ? " " : "", | |
| 1253 PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
|
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1254 |
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1255 print_plugins_versions (file, indent); |
| 0 | 1256 } |
| 1257 | |
| 1258 #ifdef ASM_COMMENT_START | |
| 1259 static int | |
| 1260 print_to_asm_out_file (print_switch_type type, const char * text) | |
| 1261 { | |
| 1262 bool prepend_sep = true; | |
| 1263 | |
| 1264 switch (type) | |
| 1265 { | |
| 1266 case SWITCH_TYPE_LINE_END: | |
| 1267 putc ('\n', asm_out_file); | |
| 1268 return 1; | |
| 1269 | |
| 1270 case SWITCH_TYPE_LINE_START: | |
| 1271 fputs (ASM_COMMENT_START, asm_out_file); | |
| 1272 return strlen (ASM_COMMENT_START); | |
| 1273 | |
| 1274 case SWITCH_TYPE_DESCRIPTIVE: | |
| 1275 if (ASM_COMMENT_START[0] == 0) | |
| 1276 prepend_sep = false; | |
| 1277 /* Drop through. */ | |
| 1278 case SWITCH_TYPE_PASSED: | |
| 1279 case SWITCH_TYPE_ENABLED: | |
| 1280 if (prepend_sep) | |
| 1281 fputc (' ', asm_out_file); | |
|
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1282 fputs (text, asm_out_file); |
| 0 | 1283 /* No need to return the length here as |
| 1284 print_single_switch has already done it. */ | |
| 1285 return 0; | |
| 1286 | |
| 1287 default: | |
| 1288 return -1; | |
| 1289 } | |
| 1290 } | |
| 1291 #endif | |
| 1292 | |
| 1293 static int | |
| 1294 print_to_stderr (print_switch_type type, const char * text) | |
| 1295 { | |
| 1296 switch (type) | |
| 1297 { | |
| 1298 case SWITCH_TYPE_LINE_END: | |
| 1299 putc ('\n', stderr); | |
| 1300 return 1; | |
| 1301 | |
| 1302 case SWITCH_TYPE_LINE_START: | |
| 1303 return 0; | |
|
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1304 |
| 0 | 1305 case SWITCH_TYPE_PASSED: |
| 1306 case SWITCH_TYPE_ENABLED: | |
| 1307 fputc (' ', stderr); | |
| 1308 /* Drop through. */ | |
| 1309 | |
| 1310 case SWITCH_TYPE_DESCRIPTIVE: | |
|
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1311 fputs (text, stderr); |
| 0 | 1312 /* No need to return the length here as |
| 1313 print_single_switch has already done it. */ | |
| 1314 return 0; | |
| 1315 | |
| 1316 default: | |
| 1317 return -1; | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 /* Print an option value and return the adjusted position in the line. | |
| 1322 ??? print_fn doesn't handle errors, eg disk full; presumably other | |
| 1323 code will catch a disk full though. */ | |
| 1324 | |
| 1325 static int | |
| 1326 print_single_switch (print_switch_fn_type print_fn, | |
| 1327 int pos, | |
| 1328 print_switch_type type, | |
| 1329 const char * text) | |
| 1330 { | |
| 1331 /* The ultrix fprintf returns 0 on success, so compute the result | |
| 1332 we want here since we need it for the following test. The +1 | |
| 1333 is for the separator character that will probably be emitted. */ | |
| 1334 int len = strlen (text) + 1; | |
| 1335 | |
| 1336 if (pos != 0 | |
| 1337 && pos + len > MAX_LINE) | |
| 1338 { | |
| 1339 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1340 pos = 0; | |
| 1341 } | |
| 1342 | |
| 1343 if (pos == 0) | |
| 1344 pos += print_fn (SWITCH_TYPE_LINE_START, NULL); | |
| 1345 | |
| 1346 print_fn (type, text); | |
| 1347 return pos + len; | |
| 1348 } | |
| 1349 | |
| 1350 /* Print active target switches using PRINT_FN. | |
| 1351 POS is the current cursor position and MAX is the size of a "line". | |
| 1352 Each line begins with INDENT and ends with TERM. | |
| 1353 Each switch is separated from the next by SEP. */ | |
| 1354 | |
| 1355 static void | |
| 1356 print_switch_values (print_switch_fn_type print_fn) | |
| 1357 { | |
| 1358 int pos = 0; | |
| 1359 size_t j; | |
| 1360 const char **p; | |
| 1361 | |
| 1362 /* Fill in the -frandom-seed option, if the user didn't pass it, so | |
| 1363 that it can be printed below. This helps reproducibility. */ | |
| 1364 if (!flag_random_seed) | |
| 1365 init_random_seed (); | |
| 1366 | |
| 1367 /* Print the options as passed. */ | |
| 1368 pos = print_single_switch (print_fn, pos, | |
| 1369 SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
| 1370 | |
| 1371 for (p = &save_argv[1]; *p != NULL; p++) | |
| 1372 { | |
| 1373 if (**p == '-') | |
| 1374 { | |
| 1375 /* Ignore these. */ | |
| 1376 if (strcmp (*p, "-o") == 0 | |
| 1377 || strcmp (*p, "-dumpbase") == 0 | |
| 1378 || strcmp (*p, "-auxbase") == 0) | |
| 1379 { | |
| 1380 if (p[1] != NULL) | |
| 1381 p++; | |
| 1382 continue; | |
| 1383 } | |
| 1384 | |
| 1385 if (strcmp (*p, "-quiet") == 0 | |
| 1386 || strcmp (*p, "-version") == 0) | |
| 1387 continue; | |
| 1388 | |
| 1389 if ((*p)[1] == 'd') | |
| 1390 continue; | |
| 1391 } | |
| 1392 | |
| 1393 pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
| 1394 } | |
| 1395 | |
| 1396 if (pos > 0) | |
| 1397 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1398 | |
| 1399 /* Print the -f and -m options that have been enabled. | |
| 1400 We don't handle language specific options but printing argv | |
| 1401 should suffice. */ | |
| 1402 pos = print_single_switch (print_fn, 0, | |
| 1403 SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
| 1404 | |
| 1405 for (j = 0; j < cl_options_count; j++) | |
| 1406 if ((cl_options[j].flags & CL_REPORT) | |
| 1407 && option_enabled (j) > 0) | |
| 1408 pos = print_single_switch (print_fn, pos, | |
| 1409 SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
| 1410 | |
| 1411 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 1412 } | |
| 1413 | |
| 1414 /* Open assembly code output file. Do this even if -fsyntax-only is | |
| 1415 on, because then the driver will have provided the name of a | |
| 1416 temporary file or bit bucket for us. NAME is the file specified on | |
| 1417 the command line, possibly NULL. */ | |
| 1418 static void | |
| 1419 init_asm_output (const char *name) | |
| 1420 { | |
| 1421 if (name == NULL && asm_file_name == 0) | |
| 1422 asm_out_file = stdout; | |
| 1423 else | |
| 1424 { | |
| 1425 if (asm_file_name == 0) | |
| 1426 { | |
| 1427 int len = strlen (dump_base_name); | |
| 1428 char *dumpname = XNEWVEC (char, len + 6); | |
| 1429 | |
| 1430 memcpy (dumpname, dump_base_name, len + 1); | |
| 1431 strip_off_ending (dumpname, len); | |
| 1432 strcat (dumpname, ".s"); | |
| 1433 asm_file_name = dumpname; | |
| 1434 } | |
| 1435 if (!strcmp (asm_file_name, "-")) | |
| 1436 asm_out_file = stdout; | |
| 1437 else | |
| 1438 asm_out_file = fopen (asm_file_name, "w+b"); | |
| 1439 if (asm_out_file == 0) | |
| 1440 fatal_error ("can%'t open %s for writing: %m", asm_file_name); | |
| 1441 } | |
| 1442 | |
| 1443 if (!flag_syntax_only) | |
| 1444 { | |
| 1445 targetm.asm_out.file_start (); | |
| 1446 | |
| 1447 if (flag_record_gcc_switches) | |
| 1448 { | |
| 1449 if (targetm.asm_out.record_gcc_switches) | |
| 1450 { | |
| 1451 /* Let the target know that we are about to start recording. */ | |
| 1452 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 1453 NULL); | |
| 1454 /* Now record the switches. */ | |
| 1455 print_switch_values (targetm.asm_out.record_gcc_switches); | |
| 1456 /* Let the target know that the recording is over. */ | |
| 1457 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 1458 NULL); | |
| 1459 } | |
| 1460 else | |
| 1461 inform (input_location, "-frecord-gcc-switches is not supported by the current target"); | |
| 1462 } | |
| 1463 | |
| 1464 #ifdef ASM_COMMENT_START | |
| 1465 if (flag_verbose_asm) | |
| 1466 { | |
| 1467 /* Print the list of switches in effect | |
| 1468 into the assembler file as comments. */ | |
| 1469 print_version (asm_out_file, ASM_COMMENT_START); | |
| 1470 print_switch_values (print_to_asm_out_file); | |
|
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1471 putc ('\n', asm_out_file); |
| 0 | 1472 } |
| 1473 #endif | |
| 1474 } | |
| 1475 } | |
| 1476 | |
| 1477 /* Return true if the state of option OPTION should be stored in PCH files | |
| 1478 and checked by default_pch_valid_p. Store the option's current state | |
| 1479 in STATE if so. */ | |
| 1480 | |
| 1481 static inline bool | |
| 1482 option_affects_pch_p (int option, struct cl_option_state *state) | |
| 1483 { | |
| 1484 if ((cl_options[option].flags & CL_TARGET) == 0) | |
| 1485 return false; | |
| 1486 if (cl_options[option].flag_var == &target_flags) | |
| 1487 if (targetm.check_pch_target_flags) | |
| 1488 return false; | |
| 1489 return get_option_state (option, state); | |
| 1490 } | |
| 1491 | |
| 1492 /* Default version of get_pch_validity. | |
| 1493 By default, every flag difference is fatal; that will be mostly right for | |
| 1494 most targets, but completely right for very few. */ | |
| 1495 | |
| 1496 void * | |
| 1497 default_get_pch_validity (size_t *len) | |
| 1498 { | |
| 1499 struct cl_option_state state; | |
| 1500 size_t i; | |
| 1501 char *result, *r; | |
| 1502 | |
| 1503 *len = 2; | |
| 1504 if (targetm.check_pch_target_flags) | |
| 1505 *len += sizeof (target_flags); | |
| 1506 for (i = 0; i < cl_options_count; i++) | |
| 1507 if (option_affects_pch_p (i, &state)) | |
| 1508 *len += state.size; | |
| 1509 | |
| 1510 result = r = XNEWVEC (char, *len); | |
| 1511 r[0] = flag_pic; | |
| 1512 r[1] = flag_pie; | |
| 1513 r += 2; | |
| 1514 if (targetm.check_pch_target_flags) | |
| 1515 { | |
| 1516 memcpy (r, &target_flags, sizeof (target_flags)); | |
| 1517 r += sizeof (target_flags); | |
| 1518 } | |
| 1519 | |
| 1520 for (i = 0; i < cl_options_count; i++) | |
| 1521 if (option_affects_pch_p (i, &state)) | |
| 1522 { | |
| 1523 memcpy (r, state.data, state.size); | |
| 1524 r += state.size; | |
| 1525 } | |
| 1526 | |
| 1527 return result; | |
| 1528 } | |
| 1529 | |
| 1530 /* Return a message which says that a PCH file was created with a different | |
| 1531 setting of OPTION. */ | |
| 1532 | |
| 1533 static const char * | |
| 1534 pch_option_mismatch (const char *option) | |
| 1535 { | |
| 1536 char *r; | |
| 1537 | |
| 1538 asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
| 1539 if (r == NULL) | |
| 1540 return _("out of memory"); | |
| 1541 return r; | |
| 1542 } | |
| 1543 | |
| 1544 /* Default version of pch_valid_p. */ | |
| 1545 | |
| 1546 const char * | |
| 1547 default_pch_valid_p (const void *data_p, size_t len) | |
| 1548 { | |
| 1549 struct cl_option_state state; | |
| 1550 const char *data = (const char *)data_p; | |
| 1551 size_t i; | |
| 1552 | |
| 1553 /* -fpic and -fpie also usually make a PCH invalid. */ | |
| 1554 if (data[0] != flag_pic) | |
| 1555 return _("created and used with different settings of -fpic"); | |
| 1556 if (data[1] != flag_pie) | |
| 1557 return _("created and used with different settings of -fpie"); | |
| 1558 data += 2; | |
| 1559 | |
| 1560 /* Check target_flags. */ | |
| 1561 if (targetm.check_pch_target_flags) | |
| 1562 { | |
| 1563 int tf; | |
| 1564 const char *r; | |
| 1565 | |
| 1566 memcpy (&tf, data, sizeof (target_flags)); | |
| 1567 data += sizeof (target_flags); | |
| 1568 len -= sizeof (target_flags); | |
| 1569 r = targetm.check_pch_target_flags (tf); | |
| 1570 if (r != NULL) | |
| 1571 return r; | |
| 1572 } | |
| 1573 | |
| 1574 for (i = 0; i < cl_options_count; i++) | |
| 1575 if (option_affects_pch_p (i, &state)) | |
| 1576 { | |
| 1577 if (memcmp (data, state.data, state.size) != 0) | |
| 1578 return pch_option_mismatch (cl_options[i].opt_text); | |
| 1579 data += state.size; | |
| 1580 len -= state.size; | |
| 1581 } | |
| 1582 | |
| 1583 return NULL; | |
| 1584 } | |
| 1585 | |
| 1586 /* Default tree printer. Handles declarations only. */ | |
|
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1587 bool |
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1588 default_tree_printer (pretty_printer *pp, text_info *text, const char *spec, |
| 0 | 1589 int precision, bool wide, bool set_locus, bool hash) |
| 1590 { | |
| 1591 tree t; | |
| 1592 | |
| 1593 /* FUTURE: %+x should set the locus. */ | |
| 1594 if (precision != 0 || wide || hash) | |
| 1595 return false; | |
| 1596 | |
| 1597 switch (*spec) | |
| 1598 { | |
|
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1599 case 'E': |
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1600 t = va_arg (*text->args_ptr, tree); |
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1601 if (TREE_CODE (t) == IDENTIFIER_NODE) |
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1602 { |
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1603 pp_identifier (pp, IDENTIFIER_POINTER (t)); |
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1604 return true; |
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1605 } |
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1606 break; |
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1607 |
| 0 | 1608 case 'D': |
| 1609 t = va_arg (*text->args_ptr, tree); | |
| 1610 if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) | |
| 1611 t = DECL_DEBUG_EXPR (t); | |
| 1612 break; | |
| 1613 | |
| 1614 case 'F': | |
| 1615 case 'T': | |
| 1616 t = va_arg (*text->args_ptr, tree); | |
| 1617 break; | |
| 1618 | |
| 1619 default: | |
| 1620 return false; | |
| 1621 } | |
| 1622 | |
| 1623 if (set_locus && text->locus) | |
| 1624 *text->locus = DECL_SOURCE_LOCATION (t); | |
| 1625 | |
| 1626 if (DECL_P (t)) | |
| 1627 { | |
| 1628 const char *n = DECL_NAME (t) | |
|
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1629 ? identifier_to_locale (lang_hooks.decl_printable_name (t, 2)) |
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1630 : _("<anonymous>"); |
| 0 | 1631 pp_string (pp, n); |
| 1632 } | |
| 1633 else | |
| 1634 dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0); | |
| 1635 | |
| 1636 return true; | |
| 1637 } | |
| 1638 | |
| 1639 /* A helper function; used as the reallocator function for cpp's line | |
| 1640 table. */ | |
| 1641 static void * | |
| 1642 realloc_for_line_map (void *ptr, size_t len) | |
| 1643 { | |
| 1644 return ggc_realloc (ptr, len); | |
| 1645 } | |
| 1646 | |
| 1647 /* Initialization of the front end environment, before command line | |
| 1648 options are parsed. Signal handlers, internationalization etc. | |
| 1649 ARGV0 is main's argv[0]. */ | |
| 1650 static void | |
| 1651 general_init (const char *argv0) | |
| 1652 { | |
| 1653 const char *p; | |
| 1654 | |
| 1655 p = argv0 + strlen (argv0); | |
| 1656 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
| 1657 --p; | |
| 1658 progname = p; | |
| 1659 | |
| 1660 xmalloc_set_program_name (progname); | |
| 1661 | |
| 1662 hex_init (); | |
| 1663 | |
| 1664 /* Unlock the stdio streams. */ | |
| 1665 unlock_std_streams (); | |
| 1666 | |
| 1667 gcc_init_libintl (); | |
| 1668 | |
| 1669 /* Initialize the diagnostics reporting machinery, so option parsing | |
| 1670 can give warnings and errors. */ | |
| 1671 diagnostic_initialize (global_dc); | |
| 1672 /* Set a default printer. Language specific initializations will | |
| 1673 override it later. */ | |
| 1674 pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
| 1675 | |
| 1676 /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ | |
| 1677 #ifdef SIGSEGV | |
| 1678 signal (SIGSEGV, crash_signal); | |
| 1679 #endif | |
| 1680 #ifdef SIGILL | |
| 1681 signal (SIGILL, crash_signal); | |
| 1682 #endif | |
| 1683 #ifdef SIGBUS | |
| 1684 signal (SIGBUS, crash_signal); | |
| 1685 #endif | |
| 1686 #ifdef SIGABRT | |
| 1687 signal (SIGABRT, crash_signal); | |
| 1688 #endif | |
| 1689 #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
| 1690 signal (SIGIOT, crash_signal); | |
| 1691 #endif | |
| 1692 #ifdef SIGFPE | |
| 1693 signal (SIGFPE, crash_signal); | |
| 1694 #endif | |
| 1695 | |
| 1696 /* Other host-specific signal setup. */ | |
| 1697 (*host_hooks.extra_signals)(); | |
| 1698 | |
| 1699 /* Initialize the garbage-collector, string pools and tree type hash | |
| 1700 table. */ | |
| 1701 init_ggc (); | |
| 1702 init_stringpool (); | |
| 1703 line_table = GGC_NEW (struct line_maps); | |
| 1704 linemap_init (line_table); | |
| 1705 line_table->reallocator = realloc_for_line_map; | |
| 1706 init_ttree (); | |
| 1707 | |
| 1708 /* Initialize register usage now so switches may override. */ | |
| 1709 init_reg_sets (); | |
| 1710 | |
| 1711 /* Register the language-independent parameters. */ | |
| 1712 add_params (lang_independent_params, LAST_PARAM); | |
| 1713 | |
| 1714 /* This must be done after add_params but before argument processing. */ | |
| 1715 init_ggc_heuristics(); | |
| 1716 init_optimization_passes (); | |
| 1717 statistics_early_init (); | |
| 1718 } | |
| 1719 | |
| 1720 /* Return true if the current target supports -fsection-anchors. */ | |
| 1721 | |
| 1722 static bool | |
| 1723 target_supports_section_anchors_p (void) | |
| 1724 { | |
| 1725 if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
| 1726 return false; | |
| 1727 | |
| 1728 if (targetm.asm_out.output_anchor == NULL) | |
| 1729 return false; | |
| 1730 | |
| 1731 return true; | |
| 1732 } | |
| 1733 | |
| 1734 /* Default the align_* variables to 1 if they're still unset, and | |
| 1735 set up the align_*_log variables. */ | |
| 1736 static void | |
| 1737 init_alignments (void) | |
| 1738 { | |
| 1739 if (align_loops <= 0) | |
| 1740 align_loops = 1; | |
| 1741 if (align_loops_max_skip > align_loops) | |
| 1742 align_loops_max_skip = align_loops - 1; | |
| 1743 align_loops_log = floor_log2 (align_loops * 2 - 1); | |
| 1744 if (align_jumps <= 0) | |
| 1745 align_jumps = 1; | |
| 1746 if (align_jumps_max_skip > align_jumps) | |
| 1747 align_jumps_max_skip = align_jumps - 1; | |
| 1748 align_jumps_log = floor_log2 (align_jumps * 2 - 1); | |
| 1749 if (align_labels <= 0) | |
| 1750 align_labels = 1; | |
| 1751 align_labels_log = floor_log2 (align_labels * 2 - 1); | |
| 1752 if (align_labels_max_skip > align_labels) | |
| 1753 align_labels_max_skip = align_labels - 1; | |
| 1754 if (align_functions <= 0) | |
| 1755 align_functions = 1; | |
| 1756 align_functions_log = floor_log2 (align_functions * 2 - 1); | |
| 1757 } | |
| 1758 | |
| 1759 /* Process the options that have been parsed. */ | |
| 1760 static void | |
| 1761 process_options (void) | |
| 1762 { | |
| 1763 /* Just in case lang_hooks.post_options ends up calling a debug_hook. | |
| 1764 This can happen with incorrect pre-processed input. */ | |
| 1765 debug_hooks = &do_nothing_debug_hooks; | |
| 1766 | |
| 1767 /* This replaces set_Wunused. */ | |
| 1768 if (warn_unused_function == -1) | |
| 1769 warn_unused_function = warn_unused; | |
| 1770 if (warn_unused_label == -1) | |
| 1771 warn_unused_label = warn_unused; | |
| 1772 /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */ | |
| 1773 if (warn_unused_parameter == -1) | |
| 1774 warn_unused_parameter = (warn_unused && extra_warnings); | |
| 1775 if (warn_unused_variable == -1) | |
| 1776 warn_unused_variable = warn_unused; | |
| 1777 if (warn_unused_value == -1) | |
| 1778 warn_unused_value = warn_unused; | |
| 1779 | |
|
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1780 /* This replaces set_Wextra. */ |
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1781 if (warn_uninitialized == -1) |
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1782 warn_uninitialized = extra_warnings; |
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1783 |
| 0 | 1784 /* Allow the front end to perform consistency checks and do further |
| 1785 initialization based on the command line options. This hook also | |
| 1786 sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
| 1787 so we can correctly initialize debug output. */ | |
| 1788 no_backend = lang_hooks.post_options (&main_input_filename); | |
| 1789 | |
| 1790 #ifdef OVERRIDE_OPTIONS | |
| 1791 /* Some machines may reject certain combinations of options. */ | |
| 1792 OVERRIDE_OPTIONS; | |
| 1793 #endif | |
| 1794 | |
| 1795 if (flag_section_anchors && !target_supports_section_anchors_p ()) | |
| 1796 { | |
| 1797 warning (OPT_fsection_anchors, | |
| 1798 "this target does not support %qs", "-fsection-anchors"); | |
| 1799 flag_section_anchors = 0; | |
| 1800 } | |
| 1801 | |
| 1802 if (flag_short_enums == 2) | |
| 1803 flag_short_enums = targetm.default_short_enums (); | |
| 1804 | |
| 1805 /* Set aux_base_name if not already set. */ | |
| 1806 if (aux_base_name) | |
| 1807 ; | |
| 1808 else if (main_input_filename) | |
| 1809 { | |
| 1810 char *name = xstrdup (lbasename (main_input_filename)); | |
| 1811 | |
| 1812 strip_off_ending (name, strlen (name)); | |
| 1813 aux_base_name = name; | |
| 1814 } | |
| 1815 else | |
| 1816 aux_base_name = "gccaux"; | |
| 1817 | |
| 1818 #ifndef HAVE_cloog | |
| 1819 if (flag_graphite | |
| 1820 || flag_loop_block | |
| 1821 || flag_loop_interchange | |
| 1822 || flag_loop_strip_mine | |
|
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1823 || flag_graphite_identity |
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1824 || flag_loop_parallelize_all) |
| 0 | 1825 sorry ("Graphite loop optimizations cannot be used"); |
| 1826 #endif | |
| 1827 | |
| 1828 /* Unrolling all loops implies that standard loop unrolling must also | |
| 1829 be done. */ | |
| 1830 if (flag_unroll_all_loops) | |
| 1831 flag_unroll_loops = 1; | |
| 1832 | |
| 1833 /* The loop unrolling code assumes that cse will be run after loop. | |
| 1834 web and rename-registers also help when run after loop unrolling. */ | |
| 1835 if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
| 1836 flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
|
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1837 |
| 0 | 1838 if (flag_web == AUTODETECT_VALUE) |
| 1839 flag_web = flag_unroll_loops || flag_peel_loops; | |
|
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1840 |
| 0 | 1841 if (flag_rename_registers == AUTODETECT_VALUE) |
| 1842 flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
| 1843 | |
| 1844 if (flag_non_call_exceptions) | |
| 1845 flag_asynchronous_unwind_tables = 1; | |
| 1846 if (flag_asynchronous_unwind_tables) | |
| 1847 flag_unwind_tables = 1; | |
| 1848 | |
| 1849 if (flag_value_profile_transformations) | |
| 1850 flag_profile_values = 1; | |
| 1851 | |
| 1852 /* Warn about options that are not supported on this machine. */ | |
| 1853 #ifndef INSN_SCHEDULING | |
| 1854 if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
| 1855 warning (0, "instruction scheduling not supported on this target machine"); | |
| 1856 #endif | |
| 1857 #ifndef DELAY_SLOTS | |
| 1858 if (flag_delayed_branch) | |
| 1859 warning (0, "this target machine does not have delayed branches"); | |
| 1860 #endif | |
| 1861 | |
| 1862 user_label_prefix = USER_LABEL_PREFIX; | |
| 1863 if (flag_leading_underscore != -1) | |
| 1864 { | |
| 1865 /* If the default prefix is more complicated than "" or "_", | |
| 1866 issue a warning and ignore this option. */ | |
| 1867 if (user_label_prefix[0] == 0 || | |
| 1868 (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
| 1869 { | |
| 1870 user_label_prefix = flag_leading_underscore ? "_" : ""; | |
| 1871 } | |
| 1872 else | |
| 1873 warning (0, "-f%sleading-underscore not supported on this target machine", | |
| 1874 flag_leading_underscore ? "" : "no-"); | |
| 1875 } | |
| 1876 | |
| 1877 /* If we are in verbose mode, write out the version and maybe all the | |
| 1878 option flags in use. */ | |
| 1879 if (version_flag) | |
| 1880 { | |
| 1881 print_version (stderr, ""); | |
| 1882 if (! quiet_flag) | |
| 1883 print_switch_values (print_to_stderr); | |
| 1884 } | |
| 1885 | |
| 1886 if (flag_syntax_only) | |
| 1887 { | |
| 1888 write_symbols = NO_DEBUG; | |
| 1889 profile_flag = 0; | |
| 1890 } | |
| 1891 | |
|
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1892 if (flag_gtoggle) |
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1893 { |
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1894 if (debug_info_level == DINFO_LEVEL_NONE) |
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1895 { |
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1896 debug_info_level = DINFO_LEVEL_NORMAL; |
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1897 |
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1898 if (write_symbols == NO_DEBUG) |
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1899 write_symbols = PREFERRED_DEBUGGING_TYPE; |
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1900 } |
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1901 else |
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1902 debug_info_level = DINFO_LEVEL_NONE; |
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1903 } |
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1904 |
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1905 if (flag_dump_final_insns && !flag_syntax_only && !no_backend) |
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1906 { |
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1907 FILE *final_output = fopen (flag_dump_final_insns, "w"); |
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1908 if (!final_output) |
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1909 { |
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1910 error ("could not open final insn dump file %qs: %s", |
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1911 flag_dump_final_insns, strerror (errno)); |
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1912 flag_dump_final_insns = NULL; |
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1913 } |
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1914 else if (fclose (final_output)) |
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1915 { |
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1916 error ("could not close zeroed insn dump file %qs: %s", |
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1917 flag_dump_final_insns, strerror (errno)); |
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1918 flag_dump_final_insns = NULL; |
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1919 } |
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1920 } |
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1921 |
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1922 /* Unless over-ridden for the target, assume that all DWARF levels |
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1923 may be emitted, if DWARF2_DEBUG is selected. */ |
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1924 if (dwarf_strict < 0) |
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1925 dwarf_strict = 0; |
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1926 |
| 0 | 1927 /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
| 1928 level is 0. */ | |
| 1929 if (debug_info_level == DINFO_LEVEL_NONE) | |
| 1930 write_symbols = NO_DEBUG; | |
| 1931 | |
| 1932 /* Now we know write_symbols, set up the debug hooks based on it. | |
| 1933 By default we do nothing for debug output. */ | |
| 1934 if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) | |
| 1935 default_debug_hooks = &do_nothing_debug_hooks; | |
| 1936 #if defined(DBX_DEBUGGING_INFO) | |
| 1937 else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
| 1938 default_debug_hooks = &dbx_debug_hooks; | |
| 1939 #endif | |
| 1940 #if defined(XCOFF_DEBUGGING_INFO) | |
| 1941 else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
| 1942 default_debug_hooks = &xcoff_debug_hooks; | |
| 1943 #endif | |
| 1944 #ifdef SDB_DEBUGGING_INFO | |
| 1945 else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
| 1946 default_debug_hooks = &sdb_debug_hooks; | |
| 1947 #endif | |
| 1948 #ifdef DWARF2_DEBUGGING_INFO | |
| 1949 else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
| 1950 default_debug_hooks = &dwarf2_debug_hooks; | |
| 1951 #endif | |
| 1952 #ifdef VMS_DEBUGGING_INFO | |
| 1953 else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
| 1954 || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
| 1955 default_debug_hooks = &vmsdbg_debug_hooks; | |
| 1956 #endif | |
| 1957 | |
| 1958 if (write_symbols == NO_DEBUG) | |
| 1959 ; | |
| 1960 #if defined(DBX_DEBUGGING_INFO) | |
| 1961 else if (write_symbols == DBX_DEBUG) | |
| 1962 debug_hooks = &dbx_debug_hooks; | |
| 1963 #endif | |
| 1964 #if defined(XCOFF_DEBUGGING_INFO) | |
| 1965 else if (write_symbols == XCOFF_DEBUG) | |
| 1966 debug_hooks = &xcoff_debug_hooks; | |
| 1967 #endif | |
| 1968 #ifdef SDB_DEBUGGING_INFO | |
| 1969 else if (write_symbols == SDB_DEBUG) | |
| 1970 debug_hooks = &sdb_debug_hooks; | |
| 1971 #endif | |
| 1972 #ifdef DWARF2_DEBUGGING_INFO | |
| 1973 else if (write_symbols == DWARF2_DEBUG) | |
| 1974 debug_hooks = &dwarf2_debug_hooks; | |
| 1975 #endif | |
| 1976 #ifdef VMS_DEBUGGING_INFO | |
| 1977 else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
| 1978 debug_hooks = &vmsdbg_debug_hooks; | |
| 1979 #endif | |
| 1980 else | |
| 1981 error ("target system does not support the \"%s\" debug format", | |
| 1982 debug_type_names[write_symbols]); | |
| 1983 | |
|
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1984 /* We know which debug output will be used so we can set flag_var_tracking |
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1985 and flag_var_tracking_uninit if the user has not specified them. */ |
| 0 | 1986 if (debug_info_level < DINFO_LEVEL_NORMAL |
| 1987 || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
| 1988 { | |
| 1989 if (flag_var_tracking == 1 | |
| 1990 || flag_var_tracking_uninit == 1) | |
| 1991 { | |
| 1992 if (debug_info_level < DINFO_LEVEL_NORMAL) | |
| 1993 warning (0, "variable tracking requested, but useless unless " | |
| 1994 "producing debug info"); | |
| 1995 else | |
| 1996 warning (0, "variable tracking requested, but not supported " | |
| 1997 "by this debug format"); | |
| 1998 } | |
| 1999 flag_var_tracking = 0; | |
| 2000 flag_var_tracking_uninit = 0; | |
| 2001 } | |
| 2002 | |
|
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2003 /* If the user specifically requested variable tracking with tagging |
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2004 uninitialized variables, we need to turn on variable tracking. |
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2005 (We already determined above that variable tracking is feasible.) */ |
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2006 if (flag_var_tracking_uninit) |
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2007 flag_var_tracking = 1; |
| 0 | 2008 |
| 2009 if (flag_var_tracking == AUTODETECT_VALUE) | |
| 2010 flag_var_tracking = optimize >= 1; | |
| 2011 | |
|
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2012 if (flag_var_tracking_assignments == AUTODETECT_VALUE) |
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2013 flag_var_tracking_assignments = flag_var_tracking |
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2014 && !(flag_selective_scheduling || flag_selective_scheduling2); |
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2015 |
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2016 if (flag_var_tracking_assignments_toggle) |
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2017 flag_var_tracking_assignments = !flag_var_tracking_assignments; |
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2018 |
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2019 if (flag_var_tracking_assignments && !flag_var_tracking) |
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2020 flag_var_tracking = flag_var_tracking_assignments = -1; |
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2021 |
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2022 if (flag_var_tracking_assignments |
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2023 && (flag_selective_scheduling || flag_selective_scheduling2)) |
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2024 warning (0, "var-tracking-assignments changes selective scheduling"); |
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2025 |
| 0 | 2026 if (flag_tree_cselim == AUTODETECT_VALUE) |
| 2027 #ifdef HAVE_conditional_move | |
| 2028 flag_tree_cselim = 1; | |
| 2029 #else | |
| 2030 flag_tree_cselim = 0; | |
| 2031 #endif | |
| 2032 | |
| 2033 /* If auxiliary info generation is desired, open the output file. | |
| 2034 This goes in the same directory as the source file--unlike | |
| 2035 all the other output files. */ | |
| 2036 if (flag_gen_aux_info) | |
| 2037 { | |
| 2038 aux_info_file = fopen (aux_info_file_name, "w"); | |
| 2039 if (aux_info_file == 0) | |
| 2040 fatal_error ("can%'t open %s: %m", aux_info_file_name); | |
| 2041 } | |
| 2042 | |
| 2043 if (! targetm.have_named_sections) | |
| 2044 { | |
| 2045 if (flag_function_sections) | |
| 2046 { | |
| 2047 warning (0, "-ffunction-sections not supported for this target"); | |
| 2048 flag_function_sections = 0; | |
| 2049 } | |
| 2050 if (flag_data_sections) | |
| 2051 { | |
| 2052 warning (0, "-fdata-sections not supported for this target"); | |
| 2053 flag_data_sections = 0; | |
| 2054 } | |
| 2055 } | |
| 2056 | |
| 2057 if (flag_function_sections && profile_flag) | |
| 2058 { | |
| 2059 warning (0, "-ffunction-sections disabled; it makes profiling impossible"); | |
| 2060 flag_function_sections = 0; | |
| 2061 } | |
| 2062 | |
| 2063 #ifndef HAVE_prefetch | |
| 2064 if (flag_prefetch_loop_arrays) | |
| 2065 { | |
| 2066 warning (0, "-fprefetch-loop-arrays not supported for this target"); | |
| 2067 flag_prefetch_loop_arrays = 0; | |
| 2068 } | |
| 2069 #else | |
| 2070 if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
| 2071 { | |
| 2072 warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); | |
| 2073 flag_prefetch_loop_arrays = 0; | |
| 2074 } | |
| 2075 #endif | |
| 2076 | |
| 2077 /* This combination of options isn't handled for i386 targets and doesn't | |
| 2078 make much sense anyway, so don't allow it. */ | |
| 2079 if (flag_prefetch_loop_arrays && optimize_size) | |
| 2080 { | |
| 2081 warning (0, "-fprefetch-loop-arrays is not supported with -Os"); | |
| 2082 flag_prefetch_loop_arrays = 0; | |
| 2083 } | |
| 2084 | |
| 2085 /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
| 2086 if (flag_signaling_nans) | |
| 2087 flag_trapping_math = 1; | |
| 2088 | |
|
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2089 /* We cannot reassociate if we want traps or signed zeros. */ |
| 0 | 2090 if (flag_associative_math && (flag_trapping_math || flag_signed_zeros)) |
| 2091 { | |
| 2092 warning (0, "-fassociative-math disabled; other options take precedence"); | |
| 2093 flag_associative_math = 0; | |
| 2094 } | |
| 2095 | |
| 2096 /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ | |
| 2097 if (flag_cx_limited_range) | |
| 2098 flag_complex_method = 0; | |
| 2099 | |
| 2100 /* With -fcx-fortran-rules, we do something in-between cheap and C99. */ | |
| 2101 if (flag_cx_fortran_rules) | |
| 2102 flag_complex_method = 1; | |
| 2103 | |
| 2104 /* Targets must be able to place spill slots at lower addresses. If the | |
| 2105 target already uses a soft frame pointer, the transition is trivial. */ | |
| 2106 if (!FRAME_GROWS_DOWNWARD && flag_stack_protect) | |
| 2107 { | |
| 2108 warning (0, "-fstack-protector not supported for this target"); | |
| 2109 flag_stack_protect = 0; | |
| 2110 } | |
| 2111 if (!flag_stack_protect) | |
| 2112 warn_stack_protect = 0; | |
| 2113 | |
| 2114 /* ??? Unwind info is not correct around the CFG unless either a frame | |
| 2115 pointer is present or A_O_A is set. Fixing this requires rewriting | |
| 2116 unwind info generation to be aware of the CFG and propagating states | |
| 2117 around edges. */ | |
| 2118 if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS | |
| 2119 && flag_omit_frame_pointer) | |
| 2120 { | |
| 2121 warning (0, "unwind tables currently require a frame pointer " | |
| 2122 "for correctness"); | |
| 2123 flag_omit_frame_pointer = 0; | |
| 2124 } | |
| 2125 } | |
| 2126 | |
| 2127 /* This function can be called multiple times to reinitialize the compiler | |
| 2128 back end when register classes or instruction sets have changed, | |
| 2129 before each function. */ | |
| 2130 static void | |
| 2131 backend_init_target (void) | |
| 2132 { | |
| 2133 /* Initialize alignment variables. */ | |
| 2134 init_alignments (); | |
| 2135 | |
| 2136 /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target() | |
| 2137 to initialize reg_raw_mode[]. */ | |
| 2138 init_emit_regs (); | |
| 2139 | |
| 2140 /* This invokes target hooks to set fixed_reg[] etc, which is | |
| 2141 mode-dependent. */ | |
| 2142 init_regs (); | |
| 2143 | |
| 2144 /* This depends on stack_pointer_rtx. */ | |
| 2145 init_fake_stack_mems (); | |
| 2146 | |
| 2147 /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is | |
| 2148 mode-dependent. */ | |
| 2149 init_alias_target (); | |
| 2150 | |
| 2151 /* Depends on HARD_FRAME_POINTER_REGNUM. */ | |
| 2152 init_reload (); | |
| 2153 | |
| 2154 /* The following initialization functions need to generate rtl, so | |
| 2155 provide a dummy function context for them. */ | |
| 2156 init_dummy_function_start (); | |
| 2157 | |
| 2158 /* rtx_cost is mode-dependent, so cached values need to be recomputed | |
| 2159 on a mode change. */ | |
| 2160 init_expmed (); | |
| 2161 | |
| 2162 /* We may need to recompute regno_save_code[] and regno_restore_code[] | |
| 2163 after a mode change as well. */ | |
| 2164 if (flag_caller_saves) | |
| 2165 init_caller_save (); | |
| 2166 expand_dummy_function_end (); | |
| 2167 } | |
| 2168 | |
| 2169 /* Initialize the compiler back end. This function is called only once, | |
| 2170 when starting the compiler. */ | |
| 2171 static void | |
| 2172 backend_init (void) | |
| 2173 { | |
|
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2174 init_emit_once (); |
| 0 | 2175 |
| 2176 init_rtlanal (); | |
| 2177 init_inline_once (); | |
| 2178 init_varasm_once (); | |
| 2179 save_register_info (); | |
| 2180 | |
| 2181 /* Initialize the target-specific back end pieces. */ | |
| 2182 ira_init_once (); | |
| 2183 backend_init_target (); | |
| 2184 } | |
| 2185 | |
|
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2186 /* Initialize excess precision settings. */ |
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2187 static void |
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2188 init_excess_precision (void) |
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2189 { |
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2190 /* Adjust excess precision handling based on the target options. If |
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2191 the front end cannot handle it, flag_excess_precision_cmdline |
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2192 will already have been set accordingly in the post_options |
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2193 hook. */ |
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2194 gcc_assert (flag_excess_precision_cmdline != EXCESS_PRECISION_DEFAULT); |
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2195 flag_excess_precision = flag_excess_precision_cmdline; |
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2196 if (flag_unsafe_math_optimizations) |
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2197 flag_excess_precision = EXCESS_PRECISION_FAST; |
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2198 if (flag_excess_precision == EXCESS_PRECISION_STANDARD) |
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2199 { |
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2200 int flt_eval_method = TARGET_FLT_EVAL_METHOD; |
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2201 switch (flt_eval_method) |
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2202 { |
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2203 case -1: |
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2204 case 0: |
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2205 /* Either the target acts unpredictably (-1) or has all the |
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2206 operations required not to have excess precision (0). */ |
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2207 flag_excess_precision = EXCESS_PRECISION_FAST; |
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2208 break; |
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2209 case 1: |
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2210 case 2: |
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2211 /* In these cases, predictable excess precision makes |
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2212 sense. */ |
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2213 break; |
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2214 default: |
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2215 /* Any other implementation-defined FLT_EVAL_METHOD values |
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2216 require the compiler to handle the associated excess |
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2217 precision rules in excess_precision_type. */ |
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2218 gcc_unreachable (); |
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2219 } |
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2220 } |
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2221 } |
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2222 |
| 0 | 2223 /* Initialize things that are both lang-dependent and target-dependent. |
| 2224 This function can be called more than once if target parameters change. */ | |
| 2225 static void | |
| 2226 lang_dependent_init_target (void) | |
| 2227 { | |
|
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2228 /* This determines excess precision settings. */ |
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2229 init_excess_precision (); |
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2230 |
| 0 | 2231 /* This creates various _DECL nodes, so needs to be called after the |
| 2232 front end is initialized. It also depends on the HAVE_xxx macros | |
| 2233 generated from the target machine description. */ | |
| 2234 init_optabs (); | |
| 2235 | |
| 2236 /* The following initialization functions need to generate rtl, so | |
| 2237 provide a dummy function context for them. */ | |
| 2238 init_dummy_function_start (); | |
| 2239 | |
| 2240 /* Do the target-specific parts of expr initialization. */ | |
| 2241 init_expr_target (); | |
| 2242 | |
| 2243 /* Although the actions of these functions are language-independent, | |
| 2244 they use optabs, so we cannot call them from backend_init. */ | |
| 2245 init_set_costs (); | |
| 2246 ira_init (); | |
| 2247 | |
| 2248 expand_dummy_function_end (); | |
| 2249 } | |
| 2250 | |
| 2251 /* Language-dependent initialization. Returns nonzero on success. */ | |
| 2252 static int | |
| 2253 lang_dependent_init (const char *name) | |
| 2254 { | |
| 2255 location_t save_loc = input_location; | |
| 2256 if (dump_base_name == 0) | |
| 2257 dump_base_name = name && name[0] ? name : "gccdump"; | |
| 2258 | |
| 2259 /* Other front-end initialization. */ | |
| 2260 input_location = BUILTINS_LOCATION; | |
| 2261 if (lang_hooks.init () == 0) | |
| 2262 return 0; | |
| 2263 input_location = save_loc; | |
| 2264 | |
| 2265 init_asm_output (name); | |
| 2266 | |
| 2267 /* This creates various _DECL nodes, so needs to be called after the | |
| 2268 front end is initialized. */ | |
| 2269 init_eh (); | |
| 2270 | |
| 2271 /* Do the target-specific parts of the initialization. */ | |
| 2272 lang_dependent_init_target (); | |
| 2273 | |
| 2274 /* If dbx symbol table desired, initialize writing it and output the | |
| 2275 predefined types. */ | |
| 2276 timevar_push (TV_SYMOUT); | |
| 2277 | |
| 2278 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO | |
| 2279 if (dwarf2out_do_frame ()) | |
| 2280 dwarf2out_frame_init (); | |
| 2281 #endif | |
| 2282 | |
| 2283 /* Now we have the correct original filename, we can initialize | |
| 2284 debug output. */ | |
| 2285 (*debug_hooks->init) (name); | |
| 2286 | |
| 2287 timevar_pop (TV_SYMOUT); | |
| 2288 | |
| 2289 return 1; | |
| 2290 } | |
| 2291 | |
| 2292 | |
| 2293 /* Reinitialize everything when target parameters, such as register usage, | |
| 2294 have changed. */ | |
| 2295 void | |
| 2296 target_reinit (void) | |
| 2297 { | |
| 2298 /* Reinitialize RTL backend. */ | |
| 2299 backend_init_target (); | |
| 2300 | |
| 2301 /* Reinitialize lang-dependent parts. */ | |
| 2302 lang_dependent_init_target (); | |
| 2303 } | |
| 2304 | |
| 2305 void | |
| 2306 dump_memory_report (bool final) | |
| 2307 { | |
| 2308 ggc_print_statistics (); | |
| 2309 stringpool_statistics (); | |
| 2310 dump_tree_statistics (); | |
| 2311 dump_gimple_statistics (); | |
| 2312 dump_rtx_statistics (); | |
| 2313 dump_varray_statistics (); | |
| 2314 dump_alloc_pool_statistics (); | |
| 2315 dump_bitmap_statistics (); | |
| 2316 dump_vec_loc_statistics (); | |
| 2317 dump_ggc_loc_statistics (final); | |
|
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2318 dump_alias_stats (stderr); |
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2319 dump_pta_stats (stderr); |
| 0 | 2320 } |
| 2321 | |
| 2322 /* Clean up: close opened files, etc. */ | |
| 2323 | |
| 2324 static void | |
| 2325 finalize (void) | |
| 2326 { | |
| 2327 /* Close the dump files. */ | |
| 2328 if (flag_gen_aux_info) | |
| 2329 { | |
| 2330 fclose (aux_info_file); | |
| 2331 if (errorcount) | |
| 2332 unlink (aux_info_file_name); | |
| 2333 } | |
| 2334 | |
| 2335 /* Close non-debugging input and output files. Take special care to note | |
| 2336 whether fclose returns an error, since the pages might still be on the | |
| 2337 buffer chain while the file is open. */ | |
| 2338 | |
| 2339 if (asm_out_file) | |
| 2340 { | |
| 2341 if (ferror (asm_out_file) != 0) | |
| 2342 fatal_error ("error writing to %s: %m", asm_file_name); | |
| 2343 if (fclose (asm_out_file) != 0) | |
| 2344 fatal_error ("error closing %s: %m", asm_file_name); | |
|
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2345 if (flag_wpa) |
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2346 unlink_if_ordinary (asm_file_name); |
| 0 | 2347 } |
| 2348 | |
| 2349 statistics_fini (); | |
| 2350 finish_optimization_passes (); | |
| 2351 | |
| 2352 ira_finish_once (); | |
| 2353 | |
| 2354 if (mem_report) | |
| 2355 dump_memory_report (true); | |
| 2356 | |
| 2357 /* Language-specific end of compilation actions. */ | |
| 2358 lang_hooks.finish (); | |
| 2359 } | |
| 2360 | |
| 2361 /* Initialize the compiler, and compile the input file. */ | |
| 2362 static void | |
| 2363 do_compile (void) | |
| 2364 { | |
| 2365 /* Initialize timing first. The C front ends read the main file in | |
| 2366 the post_options hook, and C++ does file timings. */ | |
| 2367 if (time_report || !quiet_flag || flag_detailed_statistics) | |
| 2368 timevar_init (); | |
| 2369 timevar_start (TV_TOTAL); | |
| 2370 | |
| 2371 process_options (); | |
| 2372 | |
| 2373 /* Don't do any more if an error has already occurred. */ | |
| 2374 if (!errorcount) | |
| 2375 { | |
| 2376 /* This must be run always, because it is needed to compute the FP | |
| 2377 predefined macros, such as __LDBL_MAX__, for targets using non | |
| 2378 default FP formats. */ | |
| 2379 init_adjust_machine_modes (); | |
| 2380 | |
| 2381 /* Set up the back-end if requested. */ | |
| 2382 if (!no_backend) | |
| 2383 backend_init (); | |
| 2384 | |
| 2385 /* Language-dependent initialization. Returns true on success. */ | |
| 2386 if (lang_dependent_init (main_input_filename)) | |
| 2387 compile_file (); | |
| 2388 | |
| 2389 finalize (); | |
| 2390 } | |
| 2391 | |
| 2392 /* Stop timing and print the times. */ | |
| 2393 timevar_stop (TV_TOTAL); | |
| 2394 timevar_print (stderr); | |
| 2395 } | |
| 2396 | |
| 2397 /* Entry point of cc1, cc1plus, jc1, f771, etc. | |
| 2398 Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
| 2399 any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
| 2400 | |
| 2401 It is not safe to call this function more than once. */ | |
| 2402 | |
| 2403 int | |
|
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2404 toplev_main (int argc, char **argv) |
| 0 | 2405 { |
|
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2406 expandargv (&argc, &argv); |
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2407 |
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2408 save_argv = CONST_CAST2 (const char **, char **, argv); |
| 0 | 2409 |
| 2410 /* Initialization of GCC's environment, and diagnostics. */ | |
| 2411 general_init (argv[0]); | |
| 2412 | |
| 2413 /* Parse the options and do minimal processing; basically just | |
| 2414 enough to default flags appropriately. */ | |
|
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2415 decode_options (argc, CONST_CAST2 (const char **, char **, argv)); |
| 0 | 2416 |
| 2417 init_local_tick (); | |
| 2418 | |
|
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2419 initialize_plugins (); |
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2420 |
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2421 if (version_flag) |
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2422 print_version (stderr, ""); |
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2423 |
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2424 if (help_flag) |
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2425 print_plugins_help (stderr, ""); |
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2426 |
| 0 | 2427 /* Exit early if we can (e.g. -help). */ |
| 2428 if (!exit_after_options) | |
| 2429 do_compile (); | |
| 2430 | |
|
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2431 if (warningcount || errorcount) |
| 0 | 2432 print_ignored_options (); |
| 2433 | |
|
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2434 /* Invoke registered plugin callbacks if any. */ |
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2435 invoke_plugin_callbacks (PLUGIN_FINISH, NULL); |
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2436 |
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2437 finalize_plugins (); |
| 0 | 2438 if (errorcount || sorrycount) |
| 2439 return (FATAL_EXIT_CODE); | |
| 2440 | |
| 2441 return (SUCCESS_EXIT_CODE); | |
| 2442 } |