Mercurial > hg > CbC > CbC_gcc
annotate gcc/toplev.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Top level of GCC compilers (cc1, cc1plus, etc.) |
| 145 | 2 Copyright (C) 1987-2020 Free Software Foundation, Inc. |
| 0 | 3 |
| 4 This file is part of GCC. | |
| 5 | |
| 6 GCC is free software; you can redistribute it and/or modify it under | |
| 7 the terms of the GNU General Public License as published by the Free | |
| 8 Software Foundation; either version 3, or (at your option) any later | |
| 9 version. | |
| 10 | |
| 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with GCC; see the file COPYING3. If not see | |
| 18 <http://www.gnu.org/licenses/>. */ | |
| 19 | |
| 20 /* This is the top level of cc1/c++. | |
| 21 It parses command args, opens files, invokes the various passes | |
| 22 in the proper order, and counts the time used by each. | |
| 23 Error messages and low-level interface to malloc also handled here. */ | |
| 24 | |
| 25 #include "config.h" | |
| 26 #include "system.h" | |
| 27 #include "coretypes.h" | |
| 111 | 28 #include "backend.h" |
| 29 #include "target.h" | |
| 30 #include "rtl.h" | |
| 0 | 31 #include "tree.h" |
| 111 | 32 #include "gimple.h" |
| 33 #include "alloc-pool.h" | |
| 34 #include "timevar.h" | |
| 35 #include "memmodel.h" | |
| 36 #include "tm_p.h" | |
| 37 #include "optabs-libfuncs.h" | |
| 38 #include "insn-config.h" | |
| 39 #include "ira.h" | |
| 40 #include "recog.h" | |
| 41 #include "cgraph.h" | |
| 42 #include "coverage.h" | |
| 43 #include "diagnostic.h" | |
| 44 #include "varasm.h" | |
| 45 #include "tree-inline.h" | |
|
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46 #include "realmpfr.h" /* For GMP/MPFR/MPC versions, in print_version. */ |
| 0 | 47 #include "version.h" |
| 48 #include "flags.h" | |
| 49 #include "insn-attr.h" | |
| 50 #include "output.h" | |
| 51 #include "toplev.h" | |
| 52 #include "expr.h" | |
| 53 #include "intl.h" | |
|
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54 #include "tree-diagnostic.h" |
| 0 | 55 #include "reload.h" |
| 111 | 56 #include "lra.h" |
| 0 | 57 #include "dwarf2asm.h" |
| 58 #include "debug.h" | |
| 111 | 59 #include "common/common-target.h" |
| 0 | 60 #include "langhooks.h" |
| 111 | 61 #include "cfgloop.h" /* for init_set_costs */ |
| 0 | 62 #include "hosthooks.h" |
| 63 #include "opts.h" | |
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64 #include "opts-diagnostic.h" |
| 111 | 65 #include "stringpool.h" |
| 66 #include "attribs.h" | |
| 67 #include "asan.h" | |
| 68 #include "tsan.h" | |
| 69 #include "plugin.h" | |
| 70 #include "context.h" | |
| 71 #include "pass_manager.h" | |
| 72 #include "auto-profile.h" | |
| 73 #include "dwarf2out.h" | |
| 74 #include "ipa-reference.h" | |
| 75 #include "symbol-summary.h" | |
| 76 #include "tree-vrp.h" | |
| 77 #include "ipa-prop.h" | |
| 78 #include "gcse.h" | |
| 79 #include "omp-offload.h" | |
| 80 #include "hsa-common.h" | |
| 81 #include "edit-context.h" | |
| 0 | 82 #include "tree-pass.h" |
| 111 | 83 #include "dumpfile.h" |
| 131 | 84 #include "ipa-fnsummary.h" |
| 145 | 85 #include "dump-context.h" |
| 86 #include "print-tree.h" | |
| 131 | 87 #include "optinfo-emit-json.h" |
| 0 | 88 |
| 89 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) | |
| 90 #include "dbxout.h" | |
| 91 #endif | |
| 92 | |
| 93 #ifdef XCOFF_DEBUGGING_INFO | |
| 111 | 94 #include "xcoffout.h" /* Needed for external data declarations. */ |
| 0 | 95 #endif |
| 96 | |
| 111 | 97 #include "selftest.h" |
| 98 | |
| 99 #ifdef HAVE_isl | |
| 100 #include <isl/version.h> | |
| 101 #endif | |
| 102 | |
| 103 static void general_init (const char *, bool); | |
| 104 static void do_compile (); | |
| 0 | 105 static void process_options (void); |
| 106 static void backend_init (void); | |
| 107 static int lang_dependent_init (const char *); | |
| 108 static void init_asm_output (const char *); | |
|
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109 static void finalize (bool); |
| 0 | 110 |
| 111 static void crash_signal (int) ATTRIBUTE_NORETURN; | |
| 112 static void compile_file (void); | |
| 113 | |
| 114 /* True if we don't need a backend (e.g. preprocessing only). */ | |
| 115 static bool no_backend; | |
| 116 | |
| 117 /* Length of line when printing switch values. */ | |
| 118 #define MAX_LINE 75 | |
| 119 | |
|
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120 /* Decoded options, and number of such options. */ |
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121 struct cl_decoded_option *save_decoded_options; |
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122 unsigned int save_decoded_options_count; |
| 0 | 123 |
| 124 /* Used to enable -fvar-tracking, -fweb and -frename-registers according | |
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125 to optimize in process_options (). */ |
| 0 | 126 #define AUTODETECT_VALUE 2 |
| 127 | |
| 128 /* Debug hooks - dependent upon command line options. */ | |
| 129 | |
| 130 const struct gcc_debug_hooks *debug_hooks; | |
| 131 | |
| 132 /* The FUNCTION_DECL for the function currently being compiled, | |
| 133 or 0 if between functions. */ | |
| 134 tree current_function_decl; | |
| 135 | |
| 136 /* Set to the FUNC_BEGIN label of the current function, or NULL | |
| 137 if none. */ | |
| 138 const char * current_function_func_begin_label; | |
| 139 | |
| 140 /* A random sequence of characters, unless overridden by user. */ | |
| 141 static const char *flag_random_seed; | |
| 142 | |
| 143 /* A local time stamp derived from the time of compilation. It will be | |
| 144 zero if the system cannot provide a time. It will be -1u, if the | |
| 145 user has specified a particular random seed. */ | |
| 146 unsigned local_tick; | |
| 147 | |
| 111 | 148 /* Random number for this compilation */ |
| 149 HOST_WIDE_INT random_seed; | |
| 0 | 150 |
| 111 | 151 /* -f flags. */ |
| 0 | 152 |
| 153 /* When non-NULL, indicates that whenever space is allocated on the | |
| 154 stack, the resulting stack pointer must not pass this | |
| 155 address---that is, for stacks that grow downward, the stack pointer | |
| 156 must always be greater than or equal to this address; for stacks | |
| 157 that grow upward, the stack pointer must be less than this address. | |
| 158 At present, the rtx may be either a REG or a SYMBOL_REF, although | |
| 159 the support provided depends on the backend. */ | |
| 160 rtx stack_limit_rtx; | |
| 161 | |
| 145 | 162 class target_flag_state default_target_flag_state; |
|
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163 #if SWITCHABLE_TARGET |
| 145 | 164 class target_flag_state *this_target_flag_state = &default_target_flag_state; |
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165 #else |
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166 #define this_target_flag_state (&default_target_flag_state) |
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167 #endif |
| 0 | 168 |
| 169 /* The user symbol prefix after having resolved same. */ | |
| 170 const char *user_label_prefix; | |
| 171 | |
| 172 /* Output files for assembler code (real compiler output) | |
| 173 and debugging dumps. */ | |
| 174 | |
| 175 FILE *asm_out_file; | |
| 176 FILE *aux_info_file; | |
| 145 | 177 FILE *callgraph_info_file = NULL; |
| 178 static bitmap callgraph_info_external_printed; | |
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179 FILE *stack_usage_file = NULL; |
| 0 | 180 |
| 181 /* The current working directory of a translation. It's generally the | |
| 182 directory from which compilation was initiated, but a preprocessed | |
| 183 file may specify the original directory in which it was | |
| 184 created. */ | |
| 185 | |
| 186 static const char *src_pwd; | |
| 187 | |
| 188 /* Initialize src_pwd with the given string, and return true. If it | |
| 189 was already initialized, return false. As a special case, it may | |
| 190 be called with a NULL argument to test whether src_pwd has NOT been | |
| 191 initialized yet. */ | |
| 192 | |
| 193 bool | |
| 194 set_src_pwd (const char *pwd) | |
| 195 { | |
| 196 if (src_pwd) | |
| 197 { | |
| 198 if (strcmp (src_pwd, pwd) == 0) | |
| 199 return true; | |
| 200 else | |
| 201 return false; | |
| 202 } | |
| 203 | |
| 204 src_pwd = xstrdup (pwd); | |
| 205 return true; | |
| 206 } | |
| 207 | |
| 208 /* Return the directory from which the translation unit was initiated, | |
| 209 in case set_src_pwd() was not called before to assign it a | |
| 210 different value. */ | |
| 211 | |
| 212 const char * | |
| 213 get_src_pwd (void) | |
| 214 { | |
| 215 if (! src_pwd) | |
| 216 { | |
| 217 src_pwd = getpwd (); | |
| 218 if (!src_pwd) | |
| 219 src_pwd = "."; | |
| 220 } | |
| 221 | |
| 222 return src_pwd; | |
| 223 } | |
| 224 | |
| 225 /* Called when the start of a function definition is parsed, | |
| 226 this function prints on stderr the name of the function. */ | |
| 227 void | |
| 228 announce_function (tree decl) | |
| 229 { | |
| 230 if (!quiet_flag) | |
| 231 { | |
| 232 if (rtl_dump_and_exit) | |
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233 fprintf (stderr, "%s ", |
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234 identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl)))); |
| 0 | 235 else |
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236 fprintf (stderr, " %s", |
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237 identifier_to_locale (lang_hooks.decl_printable_name (decl, 2))); |
| 0 | 238 fflush (stderr); |
| 239 pp_needs_newline (global_dc->printer) = true; | |
| 240 diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 /* Initialize local_tick with the time of day, or -1 if | |
| 245 flag_random_seed is set. */ | |
| 246 | |
| 247 static void | |
| 248 init_local_tick (void) | |
| 249 { | |
| 250 if (!flag_random_seed) | |
| 251 { | |
| 252 #ifdef HAVE_GETTIMEOFDAY | |
| 253 { | |
| 254 struct timeval tv; | |
| 255 | |
| 256 gettimeofday (&tv, NULL); | |
| 111 | 257 local_tick = (unsigned) tv.tv_sec * 1000 + tv.tv_usec / 1000; |
| 0 | 258 } |
| 259 #else | |
| 260 { | |
| 261 time_t now = time (NULL); | |
| 262 | |
| 263 if (now != (time_t)-1) | |
| 264 local_tick = (unsigned) now; | |
| 265 } | |
| 266 #endif | |
| 267 } | |
| 268 else | |
| 269 local_tick = -1; | |
| 270 } | |
| 271 | |
| 111 | 272 /* Obtain the random_seed. Unless NOINIT, initialize it if |
| 0 | 273 it's not provided in the command line. */ |
| 274 | |
| 111 | 275 HOST_WIDE_INT |
| 0 | 276 get_random_seed (bool noinit) |
| 277 { | |
| 111 | 278 if (!random_seed && !noinit) |
| 279 { | |
| 280 int fd = open ("/dev/urandom", O_RDONLY); | |
| 281 if (fd >= 0) | |
| 282 { | |
| 283 if (read (fd, &random_seed, sizeof (random_seed)) | |
| 284 != sizeof (random_seed)) | |
| 285 random_seed = 0; | |
| 286 close (fd); | |
| 287 } | |
| 288 if (!random_seed) | |
| 289 random_seed = local_tick ^ getpid (); | |
| 290 } | |
| 291 return random_seed; | |
| 0 | 292 } |
| 293 | |
| 111 | 294 /* Set flag_random_seed to VAL, and if non-null, reinitialize random_seed. */ |
| 0 | 295 |
| 111 | 296 void |
| 0 | 297 set_random_seed (const char *val) |
| 298 { | |
| 299 flag_random_seed = val; | |
| 111 | 300 if (flag_random_seed) |
| 301 { | |
| 302 char *endp; | |
| 303 | |
| 304 /* When the driver passed in a hex number don't crc it again */ | |
| 305 random_seed = strtoul (flag_random_seed, &endp, 0); | |
| 306 if (!(endp > flag_random_seed && *endp == 0)) | |
| 307 random_seed = crc32_string (0, flag_random_seed); | |
| 308 } | |
| 0 | 309 } |
| 310 | |
| 311 /* Handler for fatal signals, such as SIGSEGV. These are transformed | |
| 312 into ICE messages, which is much more user friendly. In case the | |
| 313 error printer crashes, reset the signal to prevent infinite recursion. */ | |
| 314 | |
| 315 static void | |
| 316 crash_signal (int signo) | |
| 317 { | |
| 318 signal (signo, SIG_DFL); | |
| 319 | |
| 320 /* If we crashed while processing an ASM statement, then be a little more | |
| 321 graceful. It's most likely the user's fault. */ | |
| 322 if (this_is_asm_operands) | |
| 323 { | |
| 324 output_operand_lossage ("unrecoverable error"); | |
| 325 exit (FATAL_EXIT_CODE); | |
| 326 } | |
| 327 | |
| 328 internal_error ("%s", strsignal (signo)); | |
| 329 } | |
| 330 | |
| 331 /* A subroutine of wrapup_global_declarations. We've come to the end of | |
| 332 the compilation unit. All deferred variables should be undeferred, | |
| 333 and all incomplete decls should be finalized. */ | |
| 334 | |
| 335 void | |
| 336 wrapup_global_declaration_1 (tree decl) | |
| 337 { | |
| 338 /* We're not deferring this any longer. Assignment is conditional to | |
| 339 avoid needlessly dirtying PCH pages. */ | |
| 340 if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
| 341 && DECL_DEFER_OUTPUT (decl) != 0) | |
| 342 DECL_DEFER_OUTPUT (decl) = 0; | |
| 343 | |
| 111 | 344 if (VAR_P (decl) && DECL_SIZE (decl) == 0) |
| 0 | 345 lang_hooks.finish_incomplete_decl (decl); |
| 346 } | |
| 347 | |
| 348 /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
| 349 needs to be output. Return true if it is output. */ | |
| 350 | |
| 351 bool | |
| 352 wrapup_global_declaration_2 (tree decl) | |
| 353 { | |
| 111 | 354 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl) |
| 355 || (VAR_P (decl) && DECL_HAS_VALUE_EXPR_P (decl))) | |
| 0 | 356 return false; |
| 357 | |
| 358 /* Don't write out static consts, unless we still need them. | |
| 359 | |
| 360 We also keep static consts if not optimizing (for debugging), | |
| 361 unless the user specified -fno-keep-static-consts. | |
| 362 ??? They might be better written into the debug information. | |
| 363 This is possible when using DWARF. | |
| 364 | |
| 365 A language processor that wants static constants to be always | |
| 366 written out (even if it is not used) is responsible for | |
| 367 calling rest_of_decl_compilation itself. E.g. the C front-end | |
| 368 calls rest_of_decl_compilation from finish_decl. | |
| 369 One motivation for this is that is conventional in some | |
| 370 environments to write things like: | |
| 371 static const char rcsid[] = "... version string ..."; | |
| 372 intending to force the string to be in the executable. | |
| 373 | |
| 374 A language processor that would prefer to have unneeded | |
| 375 static constants "optimized away" would just defer writing | |
| 376 them out until here. E.g. C++ does this, because static | |
| 377 constants are often defined in header files. | |
| 378 | |
| 379 ??? A tempting alternative (for both C and C++) would be | |
| 380 to force a constant to be written if and only if it is | |
| 381 defined in a main file, as opposed to an include file. */ | |
| 382 | |
| 111 | 383 if (VAR_P (decl) && TREE_STATIC (decl)) |
| 0 | 384 { |
| 111 | 385 varpool_node *node; |
| 0 | 386 bool needed = true; |
| 111 | 387 node = varpool_node::get (decl); |
| 0 | 388 |
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389 if (!node && flag_ltrans) |
| 0 | 390 needed = false; |
| 111 | 391 else if (node && node->definition) |
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392 needed = false; |
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393 else if (node && node->alias) |
| 0 | 394 needed = false; |
| 111 | 395 else if (!symtab->global_info_ready |
| 0 | 396 && (TREE_USED (decl) |
| 397 || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
| 398 /* needed */; | |
| 111 | 399 else if (node && node->analyzed) |
| 0 | 400 /* needed */; |
| 401 else if (DECL_COMDAT (decl)) | |
| 402 needed = false; | |
| 403 else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
| 404 && (optimize || !flag_keep_static_consts | |
| 405 || DECL_ARTIFICIAL (decl))) | |
| 406 needed = false; | |
| 407 | |
| 408 if (needed) | |
| 409 { | |
| 410 rest_of_decl_compilation (decl, 1, 1); | |
| 411 return true; | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 return false; | |
| 416 } | |
| 417 | |
| 418 /* Do any final processing required for the declarations in VEC, of | |
| 419 which there are LEN. We write out inline functions and variables | |
| 420 that have been deferred until this point, but which are required. | |
| 421 Returns nonzero if anything was put out. */ | |
| 422 | |
| 423 bool | |
| 424 wrapup_global_declarations (tree *vec, int len) | |
| 425 { | |
| 426 bool reconsider, output_something = false; | |
| 427 int i; | |
| 428 | |
| 429 for (i = 0; i < len; i++) | |
| 430 wrapup_global_declaration_1 (vec[i]); | |
| 431 | |
| 432 /* Now emit any global variables or functions that we have been | |
| 433 putting off. We need to loop in case one of the things emitted | |
| 434 here references another one which comes earlier in the list. */ | |
| 435 do | |
| 436 { | |
| 437 reconsider = false; | |
| 438 for (i = 0; i < len; i++) | |
| 439 reconsider |= wrapup_global_declaration_2 (vec[i]); | |
| 440 if (reconsider) | |
| 441 output_something = true; | |
| 442 } | |
| 443 while (reconsider); | |
| 444 | |
| 445 return output_something; | |
| 446 } | |
| 447 | |
| 448 /* Compile an entire translation unit. Write a file of assembly | |
| 449 output and various debugging dumps. */ | |
| 450 | |
| 451 static void | |
| 452 compile_file (void) | |
| 453 { | |
| 111 | 454 timevar_start (TV_PHASE_PARSING); |
| 455 timevar_push (TV_PARSE_GLOBAL); | |
| 0 | 456 |
| 111 | 457 /* Parse entire file and generate initial debug information. */ |
| 458 lang_hooks.parse_file (); | |
| 0 | 459 |
| 111 | 460 timevar_pop (TV_PARSE_GLOBAL); |
| 461 timevar_stop (TV_PHASE_PARSING); | |
| 0 | 462 |
| 111 | 463 if (flag_dump_locations) |
| 464 dump_location_info (stderr); | |
| 0 | 465 |
| 466 /* Compilation is now finished except for writing | |
| 467 what's left of the symbol table output. */ | |
| 468 | |
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469 if (flag_syntax_only || flag_wpa) |
| 0 | 470 return; |
| 111 | 471 |
| 472 /* Reset maximum_field_alignment, it can be adjusted by #pragma pack | |
| 473 and this shouldn't influence any types built by the middle-end | |
| 474 from now on (like gcov_info_type). */ | |
| 475 maximum_field_alignment = initial_max_fld_align * BITS_PER_UNIT; | |
| 0 | 476 |
| 477 ggc_protect_identifiers = false; | |
| 478 | |
| 111 | 479 /* Run the actual compilation process. */ |
| 480 if (!in_lto_p) | |
| 481 { | |
| 482 timevar_start (TV_PHASE_OPT_GEN); | |
| 483 symtab->finalize_compilation_unit (); | |
| 484 timevar_stop (TV_PHASE_OPT_GEN); | |
| 485 } | |
| 486 | |
| 487 /* Perform any post compilation-proper parser cleanups and | |
| 488 processing. This is currently only needed for the C++ parser, | |
| 489 which can be hopefully cleaned up so this hook is no longer | |
| 490 necessary. */ | |
| 491 if (lang_hooks.decls.post_compilation_parsing_cleanups) | |
| 492 lang_hooks.decls.post_compilation_parsing_cleanups (); | |
| 0 | 493 |
| 145 | 494 dump_context::get ().finish_any_json_writer (); |
| 131 | 495 |
|
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496 if (seen_error ()) |
| 0 | 497 return; |
| 498 | |
| 111 | 499 timevar_start (TV_PHASE_LATE_ASM); |
| 0 | 500 |
| 111 | 501 /* Compilation unit is finalized. When producing non-fat LTO object, we are |
| 502 basically finished. */ | |
| 131 | 503 if ((in_lto_p && flag_incremental_link != INCREMENTAL_LINK_LTO) |
| 504 || !flag_lto || flag_fat_lto_objects) | |
| 111 | 505 { |
| 506 /* File-scope initialization for AddressSanitizer. */ | |
| 507 if (flag_sanitize & SANITIZE_ADDRESS) | |
| 508 asan_finish_file (); | |
| 0 | 509 |
| 111 | 510 if (flag_sanitize & SANITIZE_THREAD) |
| 511 tsan_finish_file (); | |
| 512 | |
| 513 omp_finish_file (); | |
| 514 | |
| 515 hsa_output_brig (); | |
| 0 | 516 |
| 111 | 517 output_shared_constant_pool (); |
| 518 output_object_blocks (); | |
| 519 finish_tm_clone_pairs (); | |
|
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520 |
| 111 | 521 /* Write out any pending weak symbol declarations. */ |
| 522 weak_finish (); | |
| 0 | 523 |
| 111 | 524 /* This must be at the end before unwind and debug info. |
| 525 Some target ports emit PIC setup thunks here. */ | |
| 526 targetm.asm_out.code_end (); | |
| 527 | |
| 528 /* Do dbx symbols. */ | |
| 529 timevar_push (TV_SYMOUT); | |
| 0 | 530 |
| 131 | 531 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
| 532 dwarf2out_frame_finish (); | |
| 533 #endif | |
| 0 | 534 |
| 131 | 535 debuginfo_start (); |
| 111 | 536 (*debug_hooks->finish) (main_input_filename); |
| 131 | 537 debuginfo_stop (); |
| 111 | 538 timevar_pop (TV_SYMOUT); |
| 0 | 539 |
| 111 | 540 /* Output some stuff at end of file if nec. */ |
| 541 | |
| 542 dw2_output_indirect_constants (); | |
| 0 | 543 |
| 111 | 544 /* Flush any pending external directives. */ |
| 545 process_pending_assemble_externals (); | |
| 546 } | |
| 0 | 547 |
| 111 | 548 /* Let linker plugin know that this is a slim object and must be LTOed |
| 549 even when user did not ask for it. */ | |
| 550 if (flag_generate_lto && !flag_fat_lto_objects) | |
| 551 { | |
| 552 #if defined ASM_OUTPUT_ALIGNED_DECL_COMMON | |
| 553 ASM_OUTPUT_ALIGNED_DECL_COMMON (asm_out_file, NULL_TREE, "__gnu_lto_slim", | |
| 554 HOST_WIDE_INT_1U, 8); | |
| 555 #elif defined ASM_OUTPUT_ALIGNED_COMMON | |
| 556 ASM_OUTPUT_ALIGNED_COMMON (asm_out_file, "__gnu_lto_slim", | |
| 557 HOST_WIDE_INT_1U, 8); | |
| 558 #else | |
| 559 ASM_OUTPUT_COMMON (asm_out_file, "__gnu_lto_slim", | |
| 560 HOST_WIDE_INT_1U, | |
| 561 HOST_WIDE_INT_1U); | |
|
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562 #endif |
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563 } |
|
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564 |
| 0 | 565 /* Attach a special .ident directive to the end of the file to identify |
| 566 the version of GCC which compiled this code. The format of the .ident | |
| 567 string is patterned after the ones produced by native SVR4 compilers. */ | |
| 568 if (!flag_no_ident) | |
| 569 { | |
| 570 const char *pkg_version = "(GNU) "; | |
| 111 | 571 char *ident_str; |
| 0 | 572 |
| 573 if (strcmp ("(GCC) ", pkgversion_string)) | |
| 574 pkg_version = pkgversion_string; | |
| 111 | 575 |
| 576 ident_str = ACONCAT (("GCC: ", pkg_version, version_string, NULL)); | |
| 577 targetm.asm_out.output_ident (ident_str); | |
| 0 | 578 } |
| 111 | 579 |
| 580 /* Auto profile finalization. */ | |
| 581 if (flag_auto_profile) | |
| 582 end_auto_profile (); | |
| 0 | 583 |
|
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584 /* Invoke registered plugin callbacks. */ |
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585 invoke_plugin_callbacks (PLUGIN_FINISH_UNIT, NULL); |
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586 |
| 0 | 587 /* This must be at the end. Some target ports emit end of file directives |
| 145 | 588 into the assembly file here, and hence we cannot output anything to the |
| 0 | 589 assembly file after this point. */ |
| 590 targetm.asm_out.file_end (); | |
| 111 | 591 |
| 592 timevar_stop (TV_PHASE_LATE_ASM); | |
| 0 | 593 } |
| 594 | |
| 595 /* Print version information to FILE. | |
| 596 Each line begins with INDENT (for the case where FILE is the | |
| 111 | 597 assembler output file). |
| 598 | |
| 599 If SHOW_GLOBAL_STATE is true (for cc1 etc), we are within the compiler | |
| 600 proper and can print pertinent state (e.g. params and plugins). | |
| 601 | |
| 602 If SHOW_GLOBAL_STATE is false (for use by libgccjit), we are outside the | |
| 603 compiler, and we don't hold the mutex on the compiler's global state: | |
| 604 we can't print params and plugins, since they might not be initialized, | |
| 605 or might be being manipulated by a compile running in another | |
| 606 thread. */ | |
| 0 | 607 |
| 608 void | |
| 111 | 609 print_version (FILE *file, const char *indent, bool show_global_state) |
| 0 | 610 { |
| 611 static const char fmt1[] = | |
| 612 #ifdef __GNUC__ | |
| 613 N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") | |
| 614 #else | |
| 615 N_("%s%s%s %sversion %s (%s) compiled by CC, ") | |
| 616 #endif | |
| 617 ; | |
| 618 static const char fmt2[] = | |
| 111 | 619 N_("GMP version %s, MPFR version %s, MPC version %s, isl version %s\n"); |
| 0 | 620 static const char fmt3[] = |
| 621 N_("%s%swarning: %s header version %s differs from library version %s.\n"); | |
| 622 static const char fmt4[] = | |
| 623 N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); | |
| 624 #ifndef __VERSION__ | |
| 625 #define __VERSION__ "[?]" | |
| 626 #endif | |
| 627 fprintf (file, | |
| 628 file == stderr ? _(fmt1) : fmt1, | |
| 629 indent, *indent != 0 ? " " : "", | |
| 630 lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, | |
| 631 indent, __VERSION__); | |
| 632 | |
| 633 /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
|
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634 two string formats, "i.j.k" and "i.j" when k is zero. As of |
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635 gmp-4.3.0, GMP always uses the 3 number format. */ |
| 0 | 636 #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
| 111 | 637 #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3 (X) |
|
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638 #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
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639 #define GCC_GMP_VERSION \ |
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640 GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) |
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641 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 |
| 111 | 642 #define GCC_GMP_STRINGIFY_VERSION \ |
| 643 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION) "." \ | |
| 644 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION_MINOR) | |
| 0 | 645 #else |
| 111 | 646 #define GCC_GMP_STRINGIFY_VERSION \ |
| 647 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION) "." \ | |
| 648 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION_MINOR) "." \ | |
| 649 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION_PATCHLEVEL) | |
| 0 | 650 #endif |
| 651 fprintf (file, | |
| 652 file == stderr ? _(fmt2) : fmt2, | |
| 111 | 653 GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING, MPC_VERSION_STRING, |
| 654 #ifndef HAVE_isl | |
| 655 "none" | |
| 656 #else | |
| 657 isl_version () | |
| 658 #endif | |
| 659 ); | |
| 0 | 660 if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) |
| 661 fprintf (file, | |
| 662 file == stderr ? _(fmt3) : fmt3, | |
| 663 indent, *indent != 0 ? " " : "", | |
| 664 "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); | |
| 665 if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
| 666 fprintf (file, | |
| 667 file == stderr ? _(fmt3) : fmt3, | |
| 668 indent, *indent != 0 ? " " : "", | |
| 669 "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); | |
|
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670 if (strcmp (MPC_VERSION_STRING, mpc_get_version ())) |
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671 fprintf (file, |
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672 file == stderr ? _(fmt3) : fmt3, |
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673 indent, *indent != 0 ? " " : "", |
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674 "MPC", MPC_VERSION_STRING, mpc_get_version ()); |
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675 |
| 111 | 676 if (show_global_state) |
| 677 { | |
| 678 fprintf (file, | |
| 679 file == stderr ? _(fmt4) : fmt4, | |
| 680 indent, *indent != 0 ? " " : "", | |
| 145 | 681 param_ggc_min_expand, param_ggc_min_heapsize); |
| 111 | 682 |
| 683 print_plugins_versions (file, indent); | |
| 684 } | |
| 0 | 685 } |
| 686 | |
| 687 static int | |
| 688 print_to_asm_out_file (print_switch_type type, const char * text) | |
| 689 { | |
| 690 bool prepend_sep = true; | |
| 691 | |
| 692 switch (type) | |
| 693 { | |
| 694 case SWITCH_TYPE_LINE_END: | |
| 695 putc ('\n', asm_out_file); | |
| 696 return 1; | |
| 697 | |
| 698 case SWITCH_TYPE_LINE_START: | |
| 699 fputs (ASM_COMMENT_START, asm_out_file); | |
| 700 return strlen (ASM_COMMENT_START); | |
| 701 | |
| 702 case SWITCH_TYPE_DESCRIPTIVE: | |
| 703 if (ASM_COMMENT_START[0] == 0) | |
| 704 prepend_sep = false; | |
| 111 | 705 /* FALLTHRU */ |
| 0 | 706 case SWITCH_TYPE_PASSED: |
| 707 case SWITCH_TYPE_ENABLED: | |
| 708 if (prepend_sep) | |
| 709 fputc (' ', asm_out_file); | |
|
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710 fputs (text, asm_out_file); |
| 0 | 711 /* No need to return the length here as |
| 712 print_single_switch has already done it. */ | |
| 713 return 0; | |
| 714 | |
| 715 default: | |
| 716 return -1; | |
| 717 } | |
| 718 } | |
| 719 | |
| 720 static int | |
| 721 print_to_stderr (print_switch_type type, const char * text) | |
| 722 { | |
| 723 switch (type) | |
| 724 { | |
| 725 case SWITCH_TYPE_LINE_END: | |
| 726 putc ('\n', stderr); | |
| 727 return 1; | |
| 728 | |
| 729 case SWITCH_TYPE_LINE_START: | |
| 730 return 0; | |
|
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731 |
| 0 | 732 case SWITCH_TYPE_PASSED: |
| 733 case SWITCH_TYPE_ENABLED: | |
| 734 fputc (' ', stderr); | |
| 111 | 735 /* FALLTHRU */ |
| 0 | 736 |
| 737 case SWITCH_TYPE_DESCRIPTIVE: | |
|
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738 fputs (text, stderr); |
| 0 | 739 /* No need to return the length here as |
| 740 print_single_switch has already done it. */ | |
| 741 return 0; | |
| 742 | |
| 743 default: | |
| 744 return -1; | |
| 745 } | |
| 746 } | |
| 747 | |
| 748 /* Print an option value and return the adjusted position in the line. | |
| 749 ??? print_fn doesn't handle errors, eg disk full; presumably other | |
| 750 code will catch a disk full though. */ | |
| 751 | |
| 752 static int | |
| 753 print_single_switch (print_switch_fn_type print_fn, | |
| 754 int pos, | |
| 755 print_switch_type type, | |
| 756 const char * text) | |
| 757 { | |
| 758 /* The ultrix fprintf returns 0 on success, so compute the result | |
| 759 we want here since we need it for the following test. The +1 | |
| 760 is for the separator character that will probably be emitted. */ | |
| 761 int len = strlen (text) + 1; | |
| 762 | |
| 763 if (pos != 0 | |
| 764 && pos + len > MAX_LINE) | |
| 765 { | |
| 766 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 767 pos = 0; | |
| 768 } | |
| 769 | |
| 770 if (pos == 0) | |
| 771 pos += print_fn (SWITCH_TYPE_LINE_START, NULL); | |
| 772 | |
| 773 print_fn (type, text); | |
| 774 return pos + len; | |
| 775 } | |
| 776 | |
| 777 /* Print active target switches using PRINT_FN. | |
| 778 POS is the current cursor position and MAX is the size of a "line". | |
| 779 Each line begins with INDENT and ends with TERM. | |
| 780 Each switch is separated from the next by SEP. */ | |
| 781 | |
| 782 static void | |
| 783 print_switch_values (print_switch_fn_type print_fn) | |
| 784 { | |
| 785 int pos = 0; | |
| 786 size_t j; | |
| 787 | |
| 788 /* Print the options as passed. */ | |
| 789 pos = print_single_switch (print_fn, pos, | |
| 790 SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
| 791 | |
|
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792 for (j = 1; j < save_decoded_options_count; j++) |
| 0 | 793 { |
|
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794 switch (save_decoded_options[j].opt_index) |
| 0 | 795 { |
|
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796 case OPT_o: |
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797 case OPT_d: |
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798 case OPT_dumpbase: |
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799 case OPT_dumpdir: |
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800 case OPT_auxbase: |
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801 case OPT_quiet: |
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802 case OPT_version: |
| 0 | 803 /* Ignore these. */ |
|
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804 continue; |
| 0 | 805 } |
| 806 | |
|
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807 pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, |
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808 save_decoded_options[j].orig_option_with_args_text); |
| 0 | 809 } |
| 810 | |
| 811 if (pos > 0) | |
| 812 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 813 | |
| 814 /* Print the -f and -m options that have been enabled. | |
| 815 We don't handle language specific options but printing argv | |
| 816 should suffice. */ | |
| 817 pos = print_single_switch (print_fn, 0, | |
| 818 SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
| 819 | |
| 145 | 820 unsigned lang_mask = lang_hooks.option_lang_mask (); |
| 0 | 821 for (j = 0; j < cl_options_count; j++) |
| 111 | 822 if (cl_options[j].cl_report |
| 145 | 823 && option_enabled (j, lang_mask, &global_options) > 0) |
| 0 | 824 pos = print_single_switch (print_fn, pos, |
| 825 SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
| 826 | |
| 827 print_fn (SWITCH_TYPE_LINE_END, NULL); | |
| 828 } | |
| 829 | |
| 830 /* Open assembly code output file. Do this even if -fsyntax-only is | |
| 831 on, because then the driver will have provided the name of a | |
| 832 temporary file or bit bucket for us. NAME is the file specified on | |
| 833 the command line, possibly NULL. */ | |
| 834 static void | |
| 835 init_asm_output (const char *name) | |
| 836 { | |
| 837 if (name == NULL && asm_file_name == 0) | |
| 838 asm_out_file = stdout; | |
| 839 else | |
| 840 { | |
| 841 if (asm_file_name == 0) | |
| 842 { | |
| 843 int len = strlen (dump_base_name); | |
| 844 char *dumpname = XNEWVEC (char, len + 6); | |
| 845 | |
| 846 memcpy (dumpname, dump_base_name, len + 1); | |
| 847 strip_off_ending (dumpname, len); | |
| 848 strcat (dumpname, ".s"); | |
| 849 asm_file_name = dumpname; | |
| 850 } | |
| 851 if (!strcmp (asm_file_name, "-")) | |
| 852 asm_out_file = stdout; | |
| 111 | 853 else if (!canonical_filename_eq (asm_file_name, name) |
| 854 || !strcmp (asm_file_name, HOST_BIT_BUCKET)) | |
| 855 asm_out_file = fopen (asm_file_name, "w"); | |
| 0 | 856 else |
| 111 | 857 /* Use UNKOWN_LOCATION to prevent gcc from printing the first |
| 858 line in the current file. */ | |
| 859 fatal_error (UNKNOWN_LOCATION, | |
| 860 "input file %qs is the same as output file", | |
| 861 asm_file_name); | |
| 0 | 862 if (asm_out_file == 0) |
| 111 | 863 fatal_error (UNKNOWN_LOCATION, |
| 145 | 864 "cannot open %qs for writing: %m", asm_file_name); |
| 0 | 865 } |
| 866 | |
| 867 if (!flag_syntax_only) | |
| 868 { | |
| 869 targetm.asm_out.file_start (); | |
| 870 | |
| 871 if (flag_record_gcc_switches) | |
| 872 { | |
| 873 if (targetm.asm_out.record_gcc_switches) | |
| 874 { | |
| 875 /* Let the target know that we are about to start recording. */ | |
| 876 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 877 NULL); | |
| 878 /* Now record the switches. */ | |
| 879 print_switch_values (targetm.asm_out.record_gcc_switches); | |
| 880 /* Let the target know that the recording is over. */ | |
| 881 targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
| 882 NULL); | |
| 883 } | |
| 884 else | |
| 111 | 885 inform (UNKNOWN_LOCATION, |
| 145 | 886 "%<-frecord-gcc-switches%> is not supported by " |
| 111 | 887 "the current target"); |
| 0 | 888 } |
| 889 | |
| 890 if (flag_verbose_asm) | |
| 891 { | |
| 892 /* Print the list of switches in effect | |
| 893 into the assembler file as comments. */ | |
| 111 | 894 print_version (asm_out_file, ASM_COMMENT_START, true); |
| 0 | 895 print_switch_values (print_to_asm_out_file); |
|
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896 putc ('\n', asm_out_file); |
| 0 | 897 } |
| 898 } | |
| 899 } | |
| 900 | |
| 901 /* A helper function; used as the reallocator function for cpp's line | |
| 902 table. */ | |
| 903 static void * | |
| 904 realloc_for_line_map (void *ptr, size_t len) | |
| 905 { | |
| 111 | 906 return ggc_realloc (ptr, len); |
|
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907 } |
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908 |
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909 /* A helper function: used as the allocator function for |
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910 identifier_to_locale. */ |
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911 static void * |
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912 alloc_for_identifier_to_locale (size_t len) |
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913 { |
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914 return ggc_alloc_atomic (len); |
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915 } |
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916 |
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917 /* Output stack usage information. */ |
| 145 | 918 static void |
| 919 output_stack_usage_1 (FILE *cf) | |
|
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920 { |
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921 static bool warning_issued = false; |
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922 enum stack_usage_kind_type { STATIC = 0, DYNAMIC, DYNAMIC_BOUNDED }; |
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923 const char *stack_usage_kind_str[] = { |
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924 "static", |
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925 "dynamic", |
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926 "dynamic,bounded" |
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927 }; |
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928 HOST_WIDE_INT stack_usage = current_function_static_stack_size; |
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929 enum stack_usage_kind_type stack_usage_kind; |
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930 |
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931 if (stack_usage < 0) |
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932 { |
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933 if (!warning_issued) |
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934 { |
| 111 | 935 warning (0, "stack usage computation not supported for this target"); |
|
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936 warning_issued = true; |
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937 } |
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938 return; |
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939 } |
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940 |
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941 stack_usage_kind = STATIC; |
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942 |
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943 /* Add the maximum amount of space pushed onto the stack. */ |
| 131 | 944 if (maybe_ne (current_function_pushed_stack_size, 0)) |
|
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945 { |
| 131 | 946 HOST_WIDE_INT extra; |
| 947 if (current_function_pushed_stack_size.is_constant (&extra)) | |
| 948 { | |
| 949 stack_usage += extra; | |
| 950 stack_usage_kind = DYNAMIC_BOUNDED; | |
| 951 } | |
| 952 else | |
| 953 { | |
| 954 extra = constant_lower_bound (current_function_pushed_stack_size); | |
| 955 stack_usage += extra; | |
| 956 stack_usage_kind = DYNAMIC; | |
| 957 } | |
|
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958 } |
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959 |
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960 /* Now on to the tricky part: dynamic stack allocation. */ |
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961 if (current_function_allocates_dynamic_stack_space) |
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962 { |
| 131 | 963 if (stack_usage_kind != DYNAMIC) |
| 964 { | |
| 965 if (current_function_has_unbounded_dynamic_stack_size) | |
| 966 stack_usage_kind = DYNAMIC; | |
| 967 else | |
| 968 stack_usage_kind = DYNAMIC_BOUNDED; | |
| 969 } | |
|
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970 |
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971 /* Add the size even in the unbounded case, this can't hurt. */ |
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972 stack_usage += current_function_dynamic_stack_size; |
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973 } |
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974 |
| 145 | 975 if (flag_callgraph_info & CALLGRAPH_INFO_STACK_USAGE) |
| 976 fprintf (cf, "\\n" HOST_WIDE_INT_PRINT_DEC " bytes (%s)", | |
| 977 stack_usage, | |
| 978 stack_usage_kind_str[stack_usage_kind]); | |
| 979 | |
| 980 if (stack_usage_file) | |
| 111 | 981 { |
| 145 | 982 print_decl_identifier (stack_usage_file, current_function_decl, |
| 983 PRINT_DECL_ORIGIN | PRINT_DECL_NAME); | |
| 984 fprintf (stack_usage_file, "\t" HOST_WIDE_INT_PRINT_DEC"\t%s\n", | |
| 985 stack_usage, stack_usage_kind_str[stack_usage_kind]); | |
| 111 | 986 } |
| 987 | |
| 131 | 988 if (warn_stack_usage >= 0 && warn_stack_usage < HOST_WIDE_INT_MAX) |
| 111 | 989 { |
| 990 const location_t loc = DECL_SOURCE_LOCATION (current_function_decl); | |
|
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991 |
| 111 | 992 if (stack_usage_kind == DYNAMIC) |
| 993 warning_at (loc, OPT_Wstack_usage_, "stack usage might be unbounded"); | |
| 994 else if (stack_usage > warn_stack_usage) | |
| 995 { | |
| 996 if (stack_usage_kind == DYNAMIC_BOUNDED) | |
| 997 warning_at (loc, | |
| 131 | 998 OPT_Wstack_usage_, "stack usage might be %wu bytes", |
| 111 | 999 stack_usage); |
| 1000 else | |
| 131 | 1001 warning_at (loc, OPT_Wstack_usage_, "stack usage is %wu bytes", |
| 111 | 1002 stack_usage); |
| 1003 } | |
| 1004 } | |
|
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1005 } |
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1006 |
| 145 | 1007 /* Dump placeholder node for indirect calls in VCG format. */ |
| 1008 | |
| 1009 #define INDIRECT_CALL_NAME "__indirect_call" | |
| 1010 | |
| 1011 static void | |
| 1012 dump_final_node_vcg_start (FILE *f, tree decl) | |
| 1013 { | |
| 1014 fputs ("node: { title: \"", f); | |
| 1015 if (decl) | |
| 1016 print_decl_identifier (f, decl, PRINT_DECL_UNIQUE_NAME); | |
| 1017 else | |
| 1018 fputs (INDIRECT_CALL_NAME, f); | |
| 1019 fputs ("\" label: \"", f); | |
| 1020 if (decl) | |
| 1021 { | |
| 1022 print_decl_identifier (f, decl, PRINT_DECL_NAME); | |
| 1023 fputs ("\\n", f); | |
| 1024 print_decl_identifier (f, decl, PRINT_DECL_ORIGIN); | |
| 1025 } | |
| 1026 else | |
| 1027 fputs ("Indirect Call Placeholder", f); | |
| 1028 } | |
| 1029 | |
| 1030 /* Dump final cgraph edge in VCG format. */ | |
| 1031 | |
| 1032 static void | |
| 1033 dump_final_callee_vcg (FILE *f, location_t location, tree callee) | |
| 1034 { | |
| 1035 if ((!callee || DECL_EXTERNAL (callee)) | |
| 1036 && bitmap_set_bit (callgraph_info_external_printed, | |
| 1037 callee ? DECL_UID (callee) + 1 : 0)) | |
| 1038 { | |
| 1039 dump_final_node_vcg_start (f, callee); | |
| 1040 fputs ("\" shape : ellipse }\n", f); | |
| 1041 } | |
| 1042 | |
| 1043 fputs ("edge: { sourcename: \"", f); | |
| 1044 print_decl_identifier (f, current_function_decl, PRINT_DECL_UNIQUE_NAME); | |
| 1045 fputs ("\" targetname: \"", f); | |
| 1046 if (callee) | |
| 1047 print_decl_identifier (f, callee, PRINT_DECL_UNIQUE_NAME); | |
| 1048 else | |
| 1049 fputs (INDIRECT_CALL_NAME, f); | |
| 1050 if (LOCATION_LOCUS (location) != UNKNOWN_LOCATION) | |
| 1051 { | |
| 1052 expanded_location loc; | |
| 1053 fputs ("\" label: \"", f); | |
| 1054 loc = expand_location (location); | |
| 1055 fprintf (f, "%s:%d:%d", loc.file, loc.line, loc.column); | |
| 1056 } | |
| 1057 fputs ("\" }\n", f); | |
| 1058 } | |
| 1059 | |
| 1060 /* Dump final cgraph node in VCG format. */ | |
| 1061 | |
| 1062 static void | |
| 1063 dump_final_node_vcg (FILE *f) | |
| 1064 { | |
| 1065 dump_final_node_vcg_start (f, current_function_decl); | |
| 1066 | |
| 1067 if (flag_stack_usage_info | |
| 1068 || (flag_callgraph_info & CALLGRAPH_INFO_STACK_USAGE)) | |
| 1069 output_stack_usage_1 (f); | |
| 1070 | |
| 1071 if (flag_callgraph_info & CALLGRAPH_INFO_DYNAMIC_ALLOC) | |
| 1072 { | |
| 1073 fprintf (f, "\\n%u dynamic objects", vec_safe_length (cfun->su->dallocs)); | |
| 1074 | |
| 1075 unsigned i; | |
| 1076 callinfo_dalloc *cda; | |
| 1077 FOR_EACH_VEC_SAFE_ELT (cfun->su->dallocs, i, cda) | |
| 1078 { | |
| 1079 expanded_location loc = expand_location (cda->location); | |
| 1080 fprintf (f, "\\n %s", cda->name); | |
| 1081 fprintf (f, " %s:%d:%d", loc.file, loc.line, loc.column); | |
| 1082 } | |
| 1083 | |
| 1084 vec_free (cfun->su->dallocs); | |
| 1085 cfun->su->dallocs = NULL; | |
| 1086 } | |
| 1087 | |
| 1088 fputs ("\" }\n", f); | |
| 1089 | |
| 1090 unsigned i; | |
| 1091 callinfo_callee *c; | |
| 1092 FOR_EACH_VEC_SAFE_ELT (cfun->su->callees, i, c) | |
| 1093 dump_final_callee_vcg (f, c->location, c->decl); | |
| 1094 vec_free (cfun->su->callees); | |
| 1095 cfun->su->callees = NULL; | |
| 1096 } | |
| 1097 | |
| 1098 /* Output stack usage and callgraph info, as requested. */ | |
| 1099 void | |
| 1100 output_stack_usage (void) | |
| 1101 { | |
| 1102 if (flag_callgraph_info) | |
| 1103 dump_final_node_vcg (callgraph_info_file); | |
| 1104 else | |
| 1105 output_stack_usage_1 (NULL); | |
| 1106 } | |
| 1107 | |
|
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1108 /* Open an auxiliary output file. */ |
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1109 static FILE * |
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1110 open_auxiliary_file (const char *ext) |
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1111 { |
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1112 char *filename; |
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1113 FILE *file; |
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1114 |
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1115 filename = concat (aux_base_name, ".", ext, NULL); |
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1116 file = fopen (filename, "w"); |
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1117 if (!file) |
| 145 | 1118 fatal_error (input_location, "cannot open %s for writing: %m", filename); |
|
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1119 free (filename); |
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1120 return file; |
| 0 | 1121 } |
| 1122 | |
| 111 | 1123 /* Alternative diagnostics callback for reentered ICE reporting. */ |
| 1124 | |
| 1125 static void | |
| 1126 internal_error_reentered (diagnostic_context *, const char *, va_list *) | |
| 1127 { | |
| 1128 /* Flush the dump file if emergency_dump_function itself caused an ICE. */ | |
| 1129 if (dump_file) | |
| 1130 fflush (dump_file); | |
| 1131 } | |
| 1132 | |
| 1133 /* Auxiliary callback for the diagnostics code. */ | |
| 1134 | |
| 1135 static void | |
| 1136 internal_error_function (diagnostic_context *, const char *, va_list *) | |
| 1137 { | |
| 1138 global_dc->internal_error = internal_error_reentered; | |
| 1139 warn_if_plugins (); | |
| 1140 emergency_dump_function (); | |
| 1141 } | |
| 1142 | |
| 0 | 1143 /* Initialization of the front end environment, before command line |
| 1144 options are parsed. Signal handlers, internationalization etc. | |
| 1145 ARGV0 is main's argv[0]. */ | |
| 1146 static void | |
| 111 | 1147 general_init (const char *argv0, bool init_signals) |
| 0 | 1148 { |
| 1149 const char *p; | |
| 1150 | |
| 1151 p = argv0 + strlen (argv0); | |
| 1152 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
| 1153 --p; | |
| 1154 progname = p; | |
| 1155 | |
| 1156 xmalloc_set_program_name (progname); | |
| 1157 | |
| 1158 hex_init (); | |
| 1159 | |
| 1160 /* Unlock the stdio streams. */ | |
| 1161 unlock_std_streams (); | |
| 1162 | |
| 1163 gcc_init_libintl (); | |
| 1164 | |
|
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1165 identifier_to_locale_alloc = alloc_for_identifier_to_locale; |
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1166 identifier_to_locale_free = ggc_free; |
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1167 |
| 0 | 1168 /* Initialize the diagnostics reporting machinery, so option parsing |
| 1169 can give warnings and errors. */ | |
|
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1170 diagnostic_initialize (global_dc, N_OPTS); |
| 145 | 1171 global_dc->lang_mask = lang_hooks.option_lang_mask (); |
| 0 | 1172 /* Set a default printer. Language specific initializations will |
| 1173 override it later. */ | |
| 111 | 1174 tree_diagnostics_defaults (global_dc); |
| 1175 | |
| 1176 global_dc->show_caret | |
| 1177 = global_options_init.x_flag_diagnostics_show_caret; | |
| 131 | 1178 global_dc->show_labels_p |
| 1179 = global_options_init.x_flag_diagnostics_show_labels; | |
| 1180 global_dc->show_line_numbers_p | |
| 1181 = global_options_init.x_flag_diagnostics_show_line_numbers; | |
| 145 | 1182 global_dc->show_cwe |
| 1183 = global_options_init.x_flag_diagnostics_show_cwe; | |
| 1184 global_dc->path_format | |
| 1185 = (enum diagnostic_path_format)global_options_init.x_flag_diagnostics_path_format; | |
| 1186 global_dc->show_path_depths | |
| 1187 = global_options_init.x_flag_diagnostics_show_path_depths; | |
|
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1188 global_dc->show_option_requested |
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1189 = global_options_init.x_flag_diagnostics_show_option; |
| 131 | 1190 global_dc->min_margin_width |
| 1191 = global_options_init.x_diagnostics_minimum_margin_width; | |
|
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1192 global_dc->show_column |
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1193 = global_options_init.x_flag_show_column; |
| 111 | 1194 global_dc->internal_error = internal_error_function; |
|
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1195 global_dc->option_enabled = option_enabled; |
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1196 global_dc->option_state = &global_options; |
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1197 global_dc->option_name = option_name; |
| 145 | 1198 global_dc->get_option_url = get_option_url; |
| 0 | 1199 |
| 111 | 1200 if (init_signals) |
| 1201 { | |
| 1202 /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ | |
| 0 | 1203 #ifdef SIGSEGV |
| 111 | 1204 signal (SIGSEGV, crash_signal); |
| 0 | 1205 #endif |
| 1206 #ifdef SIGILL | |
| 111 | 1207 signal (SIGILL, crash_signal); |
| 0 | 1208 #endif |
| 1209 #ifdef SIGBUS | |
| 111 | 1210 signal (SIGBUS, crash_signal); |
| 0 | 1211 #endif |
| 1212 #ifdef SIGABRT | |
| 111 | 1213 signal (SIGABRT, crash_signal); |
| 0 | 1214 #endif |
| 1215 #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
| 111 | 1216 signal (SIGIOT, crash_signal); |
| 0 | 1217 #endif |
| 1218 #ifdef SIGFPE | |
| 111 | 1219 signal (SIGFPE, crash_signal); |
| 0 | 1220 #endif |
| 1221 | |
| 111 | 1222 /* Other host-specific signal setup. */ |
| 1223 (*host_hooks.extra_signals)(); | |
| 1224 } | |
| 0 | 1225 |
| 1226 /* Initialize the garbage-collector, string pools and tree type hash | |
| 1227 table. */ | |
| 1228 init_ggc (); | |
| 1229 init_stringpool (); | |
| 111 | 1230 input_location = UNKNOWN_LOCATION; |
| 1231 line_table = ggc_alloc<line_maps> (); | |
| 1232 linemap_init (line_table, BUILTINS_LOCATION); | |
| 0 | 1233 line_table->reallocator = realloc_for_line_map; |
| 111 | 1234 line_table->round_alloc_size = ggc_round_alloc_size; |
| 1235 line_table->default_range_bits = 5; | |
| 0 | 1236 init_ttree (); |
| 1237 | |
| 1238 /* Initialize register usage now so switches may override. */ | |
| 1239 init_reg_sets (); | |
| 1240 | |
| 111 | 1241 /* Create the singleton holder for global state. This creates the |
| 1242 dump manager. */ | |
| 1243 g = new gcc::context (); | |
| 0 | 1244 |
| 111 | 1245 /* Allow languages and middle-end to register their dumps before the |
| 1246 optimization passes. */ | |
| 1247 g->get_dumps ()->register_dumps (); | |
| 1248 | |
| 1249 /* Create the passes. */ | |
| 1250 g->set_passes (new gcc::pass_manager (g)); | |
| 1251 | |
| 145 | 1252 symtab = new (ggc_alloc <symbol_table> ()) symbol_table (); |
| 111 | 1253 |
| 0 | 1254 statistics_early_init (); |
| 131 | 1255 debuginfo_early_init (); |
| 0 | 1256 } |
| 1257 | |
| 1258 /* Return true if the current target supports -fsection-anchors. */ | |
| 1259 | |
| 1260 static bool | |
| 1261 target_supports_section_anchors_p (void) | |
| 1262 { | |
| 1263 if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
| 1264 return false; | |
| 1265 | |
| 1266 if (targetm.asm_out.output_anchor == NULL) | |
| 1267 return false; | |
| 1268 | |
| 1269 return true; | |
| 1270 } | |
| 1271 | |
| 131 | 1272 /* Parse "N[:M][:...]" into struct align_flags A. |
| 1273 VALUES contains parsed values (in reverse order), all processed | |
| 1274 values are popped. */ | |
| 1275 | |
| 0 | 1276 static void |
| 131 | 1277 read_log_maxskip (auto_vec<unsigned> &values, align_flags_tuple *a) |
| 1278 { | |
| 1279 unsigned n = values.pop (); | |
| 1280 if (n != 0) | |
| 1281 a->log = floor_log2 (n * 2 - 1); | |
| 1282 | |
| 1283 if (values.is_empty ()) | |
| 1284 a->maxskip = n ? n - 1 : 0; | |
| 1285 else | |
| 1286 { | |
| 1287 unsigned m = values.pop (); | |
| 1288 /* -falign-foo=N:M means M-1 max bytes of padding, not M. */ | |
| 1289 if (m > 0) | |
| 1290 m--; | |
| 1291 a->maxskip = m; | |
| 1292 } | |
| 1293 | |
| 1294 /* Normalize the tuple. */ | |
| 1295 a->normalize (); | |
| 1296 } | |
| 1297 | |
| 1298 /* Parse "N[:M[:N2[:M2]]]" string FLAG into a pair of struct align_flags. */ | |
| 1299 | |
| 1300 static void | |
| 1301 parse_N_M (const char *flag, align_flags &a) | |
| 0 | 1302 { |
| 131 | 1303 if (flag) |
| 1304 { | |
| 1305 static hash_map <nofree_string_hash, align_flags> cache; | |
| 1306 align_flags *entry = cache.get (flag); | |
| 1307 if (entry) | |
| 1308 { | |
| 1309 a = *entry; | |
| 1310 return; | |
| 1311 } | |
| 1312 | |
| 1313 auto_vec<unsigned> result_values; | |
| 1314 bool r = parse_and_check_align_values (flag, NULL, result_values, false, | |
| 1315 UNKNOWN_LOCATION); | |
| 1316 if (!r) | |
| 1317 return; | |
| 1318 | |
| 1319 /* Reverse values for easier manipulation. */ | |
| 1320 result_values.reverse (); | |
| 1321 | |
| 1322 read_log_maxskip (result_values, &a.levels[0]); | |
| 1323 if (!result_values.is_empty ()) | |
| 1324 read_log_maxskip (result_values, &a.levels[1]); | |
| 1325 #ifdef SUBALIGN_LOG | |
| 1326 else | |
| 1327 { | |
| 1328 /* N2[:M2] is not specified. This arch has a default for N2. | |
| 1329 Before -falign-foo=N:M:N2:M2 was introduced, x86 had a tweak. | |
| 1330 -falign-functions=N with N > 8 was adding secondary alignment. | |
| 1331 -falign-functions=10 was emitting this before every function: | |
| 1332 .p2align 4,,9 | |
| 1333 .p2align 3 | |
| 1334 Now this behavior (and more) can be explicitly requested: | |
| 1335 -falign-functions=16:10:8 | |
| 1336 Retain old behavior if N2 is missing: */ | |
| 1337 | |
| 1338 int align = 1 << a.levels[0].log; | |
| 1339 int subalign = 1 << SUBALIGN_LOG; | |
| 1340 | |
| 1341 if (a.levels[0].log > SUBALIGN_LOG | |
| 1342 && a.levels[0].maxskip >= subalign - 1) | |
| 1343 { | |
| 1344 /* Set N2 unless subalign can never have any effect. */ | |
| 1345 if (align > a.levels[0].maxskip + 1) | |
| 1346 { | |
| 1347 a.levels[1].log = SUBALIGN_LOG; | |
| 1348 a.levels[1].normalize (); | |
| 1349 } | |
| 1350 } | |
| 1351 } | |
| 1352 #endif | |
| 1353 | |
| 1354 /* Cache seen value. */ | |
| 1355 cache.put (flag, a); | |
| 1356 } | |
| 1357 } | |
| 1358 | |
| 1359 /* Process -falign-foo=N[:M[:N2[:M2]]] options. */ | |
| 1360 | |
| 1361 void | |
| 1362 parse_alignment_opts (void) | |
| 1363 { | |
| 1364 parse_N_M (str_align_loops, align_loops); | |
| 1365 parse_N_M (str_align_jumps, align_jumps); | |
| 1366 parse_N_M (str_align_labels, align_labels); | |
| 1367 parse_N_M (str_align_functions, align_functions); | |
| 0 | 1368 } |
| 1369 | |
| 1370 /* Process the options that have been parsed. */ | |
| 1371 static void | |
| 1372 process_options (void) | |
| 1373 { | |
| 1374 /* Just in case lang_hooks.post_options ends up calling a debug_hook. | |
| 1375 This can happen with incorrect pre-processed input. */ | |
| 1376 debug_hooks = &do_nothing_debug_hooks; | |
| 1377 | |
|
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1378 maximum_field_alignment = initial_max_fld_align * BITS_PER_UNIT; |
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1379 |
| 0 | 1380 /* Allow the front end to perform consistency checks and do further |
| 1381 initialization based on the command line options. This hook also | |
| 1382 sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
| 1383 so we can correctly initialize debug output. */ | |
| 1384 no_backend = lang_hooks.post_options (&main_input_filename); | |
| 1385 | |
| 1386 /* Some machines may reject certain combinations of options. */ | |
| 111 | 1387 location_t saved_location = input_location; |
| 1388 input_location = UNKNOWN_LOCATION; | |
|
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1389 targetm.target_option.override (); |
| 111 | 1390 input_location = saved_location; |
| 1391 | |
| 1392 if (flag_diagnostics_generate_patch) | |
| 1393 global_dc->edit_context_ptr = new edit_context (); | |
| 0 | 1394 |
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1395 /* Avoid any informative notes in the second run of -fcompare-debug. */ |
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1396 if (flag_compare_debug) |
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1397 diagnostic_inhibit_notes (global_dc); |
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1398 |
| 0 | 1399 if (flag_section_anchors && !target_supports_section_anchors_p ()) |
| 1400 { | |
| 111 | 1401 warning_at (UNKNOWN_LOCATION, OPT_fsection_anchors, |
| 1402 "this target does not support %qs", | |
| 1403 "-fsection-anchors"); | |
| 0 | 1404 flag_section_anchors = 0; |
| 1405 } | |
| 1406 | |
| 1407 if (flag_short_enums == 2) | |
| 1408 flag_short_enums = targetm.default_short_enums (); | |
| 1409 | |
| 1410 /* Set aux_base_name if not already set. */ | |
| 1411 if (aux_base_name) | |
| 1412 ; | |
| 1413 else if (main_input_filename) | |
| 1414 { | |
| 1415 char *name = xstrdup (lbasename (main_input_filename)); | |
| 1416 | |
| 1417 strip_off_ending (name, strlen (name)); | |
| 1418 aux_base_name = name; | |
| 1419 } | |
| 1420 else | |
| 1421 aux_base_name = "gccaux"; | |
| 1422 | |
| 111 | 1423 #ifndef HAVE_isl |
| 0 | 1424 if (flag_graphite |
| 111 | 1425 || flag_loop_nest_optimize |
|
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1426 || flag_graphite_identity |
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1427 || flag_loop_parallelize_all) |
| 111 | 1428 sorry ("Graphite loop optimizations cannot be used (isl is not available) " |
| 145 | 1429 "(%<-fgraphite%>, %<-fgraphite-identity%>, " |
| 1430 "%<-floop-nest-optimize%>, %<-floop-parallelize-all%>)"); | |
| 0 | 1431 #endif |
| 1432 | |
| 111 | 1433 if (flag_cf_protection != CF_NONE |
| 1434 && !(flag_cf_protection & CF_SET)) | |
| 1435 { | |
| 1436 if (flag_cf_protection == CF_FULL) | |
| 1437 { | |
| 1438 error_at (UNKNOWN_LOCATION, | |
| 1439 "%<-fcf-protection=full%> is not supported for this " | |
| 1440 "target"); | |
| 1441 flag_cf_protection = CF_NONE; | |
| 1442 } | |
| 1443 if (flag_cf_protection == CF_BRANCH) | |
| 1444 { | |
| 1445 error_at (UNKNOWN_LOCATION, | |
| 1446 "%<-fcf-protection=branch%> is not supported for this " | |
| 1447 "target"); | |
| 1448 flag_cf_protection = CF_NONE; | |
| 1449 } | |
| 1450 if (flag_cf_protection == CF_RETURN) | |
| 1451 { | |
| 1452 error_at (UNKNOWN_LOCATION, | |
| 1453 "%<-fcf-protection=return%> is not supported for this " | |
| 1454 "target"); | |
| 1455 flag_cf_protection = CF_NONE; | |
| 1456 } | |
| 1457 } | |
| 1458 | |
| 1459 /* One region RA really helps to decrease the code size. */ | |
| 1460 if (flag_ira_region == IRA_REGION_AUTODETECT) | |
| 1461 flag_ira_region | |
| 1462 = optimize_size || !optimize ? IRA_REGION_ONE : IRA_REGION_MIXED; | |
| 1463 | |
| 1464 if (!abi_version_at_least (2)) | |
| 1465 { | |
| 1466 /* -fabi-version=1 support was removed after GCC 4.9. */ | |
| 1467 error_at (UNKNOWN_LOCATION, | |
| 1468 "%<-fabi-version=1%> is no longer supported"); | |
| 1469 flag_abi_version = 2; | |
| 1470 } | |
| 1471 | |
| 0 | 1472 /* Unrolling all loops implies that standard loop unrolling must also |
| 1473 be done. */ | |
| 1474 if (flag_unroll_all_loops) | |
| 1475 flag_unroll_loops = 1; | |
| 1476 | |
|
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1477 /* web and rename-registers help when run after loop unrolling. */ |
| 0 | 1478 if (flag_web == AUTODETECT_VALUE) |
| 111 | 1479 flag_web = flag_unroll_loops; |
|
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1480 |
| 0 | 1481 if (flag_rename_registers == AUTODETECT_VALUE) |
| 111 | 1482 flag_rename_registers = flag_unroll_loops; |
| 0 | 1483 |
| 1484 if (flag_non_call_exceptions) | |
| 1485 flag_asynchronous_unwind_tables = 1; | |
| 1486 if (flag_asynchronous_unwind_tables) | |
| 1487 flag_unwind_tables = 1; | |
| 1488 | |
| 1489 if (flag_value_profile_transformations) | |
| 1490 flag_profile_values = 1; | |
| 1491 | |
| 1492 /* Warn about options that are not supported on this machine. */ | |
| 1493 #ifndef INSN_SCHEDULING | |
| 1494 if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
| 111 | 1495 warning_at (UNKNOWN_LOCATION, 0, |
| 1496 "instruction scheduling not supported on this target machine"); | |
| 0 | 1497 #endif |
| 111 | 1498 if (!DELAY_SLOTS && flag_delayed_branch) |
| 1499 warning_at (UNKNOWN_LOCATION, 0, | |
| 1500 "this target machine does not have delayed branches"); | |
| 0 | 1501 |
| 1502 user_label_prefix = USER_LABEL_PREFIX; | |
| 1503 if (flag_leading_underscore != -1) | |
| 1504 { | |
| 1505 /* If the default prefix is more complicated than "" or "_", | |
| 1506 issue a warning and ignore this option. */ | |
| 1507 if (user_label_prefix[0] == 0 || | |
| 1508 (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
| 1509 { | |
| 1510 user_label_prefix = flag_leading_underscore ? "_" : ""; | |
| 1511 } | |
| 1512 else | |
| 111 | 1513 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1514 "%<-f%sleading-underscore%> not supported on this " |
| 111 | 1515 "target machine", flag_leading_underscore ? "" : "no-"); |
| 0 | 1516 } |
| 1517 | |
| 1518 /* If we are in verbose mode, write out the version and maybe all the | |
| 1519 option flags in use. */ | |
| 1520 if (version_flag) | |
| 1521 { | |
| 111 | 1522 print_version (stderr, "", true); |
| 0 | 1523 if (! quiet_flag) |
| 1524 print_switch_values (print_to_stderr); | |
| 1525 } | |
| 1526 | |
| 1527 if (flag_syntax_only) | |
| 1528 { | |
| 1529 write_symbols = NO_DEBUG; | |
| 1530 profile_flag = 0; | |
| 1531 } | |
| 1532 | |
|
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|
1533 if (flag_gtoggle) |
|
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|
1534 { |
|
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|
1535 if (debug_info_level == DINFO_LEVEL_NONE) |
|
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|
1536 { |
|
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|
1537 debug_info_level = DINFO_LEVEL_NORMAL; |
|
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|
1538 |
|
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|
1539 if (write_symbols == NO_DEBUG) |
|
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|
1540 write_symbols = PREFERRED_DEBUGGING_TYPE; |
|
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|
1541 } |
|
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|
1542 else |
|
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|
1543 debug_info_level = DINFO_LEVEL_NONE; |
|
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|
1544 } |
|
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|
1545 |
|
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|
1546 if (flag_dump_final_insns && !flag_syntax_only && !no_backend) |
|
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|
1547 { |
|
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|
1548 FILE *final_output = fopen (flag_dump_final_insns, "w"); |
|
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|
1549 if (!final_output) |
|
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|
1550 { |
| 111 | 1551 error_at (UNKNOWN_LOCATION, |
| 1552 "could not open final insn dump file %qs: %m", | |
| 1553 flag_dump_final_insns); | |
|
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|
1554 flag_dump_final_insns = NULL; |
|
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|
1555 } |
|
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|
1556 else if (fclose (final_output)) |
|
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|
1557 { |
| 111 | 1558 error_at (UNKNOWN_LOCATION, |
| 1559 "could not close zeroed insn dump file %qs: %m", | |
| 1560 flag_dump_final_insns); | |
|
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|
1561 flag_dump_final_insns = NULL; |
|
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|
1562 } |
|
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|
1563 } |
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1564 |
| 0 | 1565 /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
| 1566 level is 0. */ | |
| 1567 if (debug_info_level == DINFO_LEVEL_NONE) | |
| 1568 write_symbols = NO_DEBUG; | |
| 1569 | |
| 1570 if (write_symbols == NO_DEBUG) | |
| 1571 ; | |
| 1572 #if defined(DBX_DEBUGGING_INFO) | |
| 1573 else if (write_symbols == DBX_DEBUG) | |
| 1574 debug_hooks = &dbx_debug_hooks; | |
| 1575 #endif | |
| 1576 #if defined(XCOFF_DEBUGGING_INFO) | |
| 1577 else if (write_symbols == XCOFF_DEBUG) | |
| 1578 debug_hooks = &xcoff_debug_hooks; | |
| 1579 #endif | |
| 1580 #ifdef DWARF2_DEBUGGING_INFO | |
| 1581 else if (write_symbols == DWARF2_DEBUG) | |
| 1582 debug_hooks = &dwarf2_debug_hooks; | |
| 1583 #endif | |
| 1584 #ifdef VMS_DEBUGGING_INFO | |
| 1585 else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
| 1586 debug_hooks = &vmsdbg_debug_hooks; | |
| 1587 #endif | |
| 111 | 1588 #ifdef DWARF2_LINENO_DEBUGGING_INFO |
| 1589 else if (write_symbols == DWARF2_DEBUG) | |
| 1590 debug_hooks = &dwarf2_lineno_debug_hooks; | |
| 1591 #endif | |
| 0 | 1592 else |
| 111 | 1593 error_at (UNKNOWN_LOCATION, |
| 1594 "target system does not support the %qs debug format", | |
| 1595 debug_type_names[write_symbols]); | |
| 0 | 1596 |
|
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1597 /* We know which debug output will be used so we can set flag_var_tracking |
|
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|
1598 and flag_var_tracking_uninit if the user has not specified them. */ |
| 0 | 1599 if (debug_info_level < DINFO_LEVEL_NORMAL |
| 1600 || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
| 1601 { | |
| 1602 if (flag_var_tracking == 1 | |
| 1603 || flag_var_tracking_uninit == 1) | |
| 1604 { | |
| 1605 if (debug_info_level < DINFO_LEVEL_NORMAL) | |
| 111 | 1606 warning_at (UNKNOWN_LOCATION, 0, |
| 1607 "variable tracking requested, but useless unless " | |
| 1608 "producing debug info"); | |
| 0 | 1609 else |
| 111 | 1610 warning_at (UNKNOWN_LOCATION, 0, |
| 1611 "variable tracking requested, but not supported " | |
| 1612 "by this debug format"); | |
| 0 | 1613 } |
| 1614 flag_var_tracking = 0; | |
| 1615 flag_var_tracking_uninit = 0; | |
| 1616 } | |
| 1617 | |
|
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|
1618 /* The debug hooks are used to implement -fdump-go-spec because it |
|
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|
1619 gives a simple and stable API for all the information we need to |
|
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|
1620 dump. */ |
|
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|
1621 if (flag_dump_go_spec != NULL) |
|
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|
1622 debug_hooks = dump_go_spec_init (flag_dump_go_spec, debug_hooks); |
|
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|
1623 |
|
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|
1624 /* If the user specifically requested variable tracking with tagging |
|
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|
1625 uninitialized variables, we need to turn on variable tracking. |
|
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|
1626 (We already determined above that variable tracking is feasible.) */ |
| 111 | 1627 if (flag_var_tracking_uninit == 1) |
|
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|
1628 flag_var_tracking = 1; |
| 0 | 1629 |
| 1630 if (flag_var_tracking == AUTODETECT_VALUE) | |
| 1631 flag_var_tracking = optimize >= 1; | |
| 1632 | |
| 111 | 1633 if (flag_var_tracking_uninit == AUTODETECT_VALUE) |
| 1634 flag_var_tracking_uninit = flag_var_tracking; | |
| 1635 | |
|
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|
1636 if (flag_var_tracking_assignments == AUTODETECT_VALUE) |
| 131 | 1637 flag_var_tracking_assignments |
| 1638 = (flag_var_tracking | |
| 1639 && !(flag_selective_scheduling || flag_selective_scheduling2)); | |
|
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|
1640 |
|
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|
1641 if (flag_var_tracking_assignments_toggle) |
|
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|
1642 flag_var_tracking_assignments = !flag_var_tracking_assignments; |
|
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|
1643 |
|
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|
1644 if (flag_var_tracking_assignments && !flag_var_tracking) |
|
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|
1645 flag_var_tracking = flag_var_tracking_assignments = -1; |
|
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|
1646 |
|
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|
1647 if (flag_var_tracking_assignments |
|
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|
1648 && (flag_selective_scheduling || flag_selective_scheduling2)) |
| 111 | 1649 warning_at (UNKNOWN_LOCATION, 0, |
| 1650 "var-tracking-assignments changes selective scheduling"); | |
|
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|
1651 |
| 131 | 1652 if (debug_nonbind_markers_p == AUTODETECT_VALUE) |
| 1653 debug_nonbind_markers_p | |
| 1654 = (optimize | |
| 1655 && debug_info_level >= DINFO_LEVEL_NORMAL | |
| 1656 && (write_symbols == DWARF2_DEBUG | |
| 1657 || write_symbols == VMS_AND_DWARF2_DEBUG) | |
| 1658 && !(flag_selective_scheduling || flag_selective_scheduling2)); | |
| 1659 | |
| 1660 if (dwarf2out_as_loc_support == AUTODETECT_VALUE) | |
| 1661 dwarf2out_as_loc_support | |
| 1662 = dwarf2out_default_as_loc_support (); | |
| 1663 if (dwarf2out_as_locview_support == AUTODETECT_VALUE) | |
| 1664 dwarf2out_as_locview_support | |
| 1665 = dwarf2out_default_as_locview_support (); | |
| 1666 | |
| 1667 if (debug_variable_location_views == AUTODETECT_VALUE) | |
| 1668 { | |
| 1669 debug_variable_location_views | |
| 1670 = (flag_var_tracking | |
| 1671 && debug_info_level >= DINFO_LEVEL_NORMAL | |
| 1672 && (write_symbols == DWARF2_DEBUG | |
| 1673 || write_symbols == VMS_AND_DWARF2_DEBUG) | |
| 1674 && !dwarf_strict | |
| 1675 && dwarf2out_as_loc_support | |
| 1676 && dwarf2out_as_locview_support); | |
| 1677 } | |
| 1678 else if (debug_variable_location_views == -1 && dwarf_version != 5) | |
| 1679 { | |
| 1680 warning_at (UNKNOWN_LOCATION, 0, | |
| 145 | 1681 "without %<-gdwarf-5%>, " |
| 1682 "%<-gvariable-location-views=incompat5%> " | |
| 1683 "is equivalent to %<-gvariable-location-views%>"); | |
| 131 | 1684 debug_variable_location_views = 1; |
| 1685 } | |
| 1686 | |
| 1687 if (debug_internal_reset_location_views == 2) | |
| 1688 { | |
| 1689 debug_internal_reset_location_views | |
| 1690 = (debug_variable_location_views | |
| 1691 && targetm.reset_location_view); | |
| 1692 } | |
| 1693 else if (debug_internal_reset_location_views | |
| 1694 && !debug_variable_location_views) | |
| 1695 { | |
| 1696 warning_at (UNKNOWN_LOCATION, 0, | |
| 145 | 1697 "%<-ginternal-reset-location-views%> is forced disabled " |
| 1698 "without %<-gvariable-location-views%>"); | |
| 131 | 1699 debug_internal_reset_location_views = 0; |
| 1700 } | |
| 1701 | |
| 1702 if (debug_inline_points == AUTODETECT_VALUE) | |
| 1703 debug_inline_points = debug_variable_location_views; | |
| 1704 else if (debug_inline_points && !debug_nonbind_markers_p) | |
| 1705 { | |
| 1706 warning_at (UNKNOWN_LOCATION, 0, | |
| 145 | 1707 "%<-ginline-points%> is forced disabled without " |
| 1708 "%<-gstatement-frontiers%>"); | |
| 131 | 1709 debug_inline_points = 0; |
| 1710 } | |
| 1711 | |
| 0 | 1712 if (flag_tree_cselim == AUTODETECT_VALUE) |
| 111 | 1713 { |
| 1714 if (HAVE_conditional_move) | |
| 1715 flag_tree_cselim = 1; | |
| 1716 else | |
| 1717 flag_tree_cselim = 0; | |
| 1718 } | |
| 0 | 1719 |
| 1720 /* If auxiliary info generation is desired, open the output file. | |
| 1721 This goes in the same directory as the source file--unlike | |
| 1722 all the other output files. */ | |
| 1723 if (flag_gen_aux_info) | |
| 1724 { | |
| 1725 aux_info_file = fopen (aux_info_file_name, "w"); | |
| 1726 if (aux_info_file == 0) | |
| 111 | 1727 fatal_error (UNKNOWN_LOCATION, |
| 145 | 1728 "cannot open %s: %m", aux_info_file_name); |
| 0 | 1729 } |
| 1730 | |
| 111 | 1731 if (!targetm_common.have_named_sections) |
| 0 | 1732 { |
| 1733 if (flag_function_sections) | |
| 1734 { | |
| 111 | 1735 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1736 "%<-ffunction-sections%> not supported for this target"); |
| 0 | 1737 flag_function_sections = 0; |
| 1738 } | |
| 1739 if (flag_data_sections) | |
| 1740 { | |
| 111 | 1741 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1742 "%<-fdata-sections%> not supported for this target"); |
| 0 | 1743 flag_data_sections = 0; |
| 1744 } | |
| 1745 } | |
| 1746 | |
| 111 | 1747 if (flag_prefetch_loop_arrays > 0 && !targetm.code_for_prefetch) |
| 0 | 1748 { |
| 111 | 1749 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1750 "%<-fprefetch-loop-arrays%> not supported for this target"); |
| 0 | 1751 flag_prefetch_loop_arrays = 0; |
| 1752 } | |
| 111 | 1753 else if (flag_prefetch_loop_arrays > 0 && !targetm.have_prefetch ()) |
| 0 | 1754 { |
| 111 | 1755 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1756 "%<-fprefetch-loop-arrays%> not supported for this target " |
| 1757 "(try %<-march%> switches)"); | |
| 0 | 1758 flag_prefetch_loop_arrays = 0; |
| 1759 } | |
| 1760 | |
| 1761 /* This combination of options isn't handled for i386 targets and doesn't | |
| 1762 make much sense anyway, so don't allow it. */ | |
|
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|
1763 if (flag_prefetch_loop_arrays > 0 && optimize_size) |
| 0 | 1764 { |
| 111 | 1765 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1766 "%<-fprefetch-loop-arrays%> is not supported with %<-Os%>"); |
| 0 | 1767 flag_prefetch_loop_arrays = 0; |
| 1768 } | |
| 1769 | |
| 1770 /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
| 1771 if (flag_signaling_nans) | |
| 1772 flag_trapping_math = 1; | |
| 1773 | |
|
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|
1774 /* We cannot reassociate if we want traps or signed zeros. */ |
| 0 | 1775 if (flag_associative_math && (flag_trapping_math || flag_signed_zeros)) |
| 1776 { | |
| 111 | 1777 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1778 "%<-fassociative-math%> disabled; other options take " |
| 111 | 1779 "precedence"); |
| 0 | 1780 flag_associative_math = 0; |
| 1781 } | |
| 1782 | |
| 111 | 1783 /* -fstack-clash-protection is not currently supported on targets |
| 1784 where the stack grows up. */ | |
| 1785 if (flag_stack_clash_protection && !STACK_GROWS_DOWNWARD) | |
| 1786 { | |
| 1787 warning_at (UNKNOWN_LOCATION, 0, | |
| 1788 "%<-fstack-clash-protection%> is not supported on targets " | |
| 1789 "where the stack grows from lower to higher addresses"); | |
| 1790 flag_stack_clash_protection = 0; | |
| 1791 } | |
| 1792 | |
| 145 | 1793 /* We cannot support -fstack-check= and -fstack-clash-protection at |
| 111 | 1794 the same time. */ |
| 1795 if (flag_stack_check != NO_STACK_CHECK && flag_stack_clash_protection) | |
| 1796 { | |
| 1797 warning_at (UNKNOWN_LOCATION, 0, | |
| 1798 "%<-fstack-check=%> and %<-fstack-clash_protection%> are " | |
| 145 | 1799 "mutually exclusive; disabling %<-fstack-check=%>"); |
| 111 | 1800 flag_stack_check = NO_STACK_CHECK; |
| 1801 } | |
| 1802 | |
| 0 | 1803 /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ |
| 1804 if (flag_cx_limited_range) | |
| 1805 flag_complex_method = 0; | |
| 1806 | |
| 1807 /* With -fcx-fortran-rules, we do something in-between cheap and C99. */ | |
| 1808 if (flag_cx_fortran_rules) | |
| 1809 flag_complex_method = 1; | |
| 1810 | |
| 1811 /* Targets must be able to place spill slots at lower addresses. If the | |
| 1812 target already uses a soft frame pointer, the transition is trivial. */ | |
| 1813 if (!FRAME_GROWS_DOWNWARD && flag_stack_protect) | |
| 1814 { | |
| 111 | 1815 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1816 "%<-fstack-protector%> not supported for this target"); |
| 0 | 1817 flag_stack_protect = 0; |
| 1818 } | |
| 1819 if (!flag_stack_protect) | |
| 1820 warn_stack_protect = 0; | |
| 1821 | |
| 111 | 1822 /* Address Sanitizer needs porting to each target architecture. */ |
| 1823 | |
| 1824 if ((flag_sanitize & SANITIZE_ADDRESS) | |
| 145 | 1825 && (!FRAME_GROWS_DOWNWARD || targetm.asan_shadow_offset == NULL)) |
| 0 | 1826 { |
| 111 | 1827 warning_at (UNKNOWN_LOCATION, 0, |
| 145 | 1828 "%<-fsanitize=address%> and %<-fsanitize=kernel-address%> " |
| 111 | 1829 "are not supported for this target"); |
| 1830 flag_sanitize &= ~SANITIZE_ADDRESS; | |
| 1831 } | |
| 1832 | |
| 1833 /* Do not use IPA optimizations for register allocation if profiler is active | |
| 1834 or patchable function entries are inserted for run-time instrumentation | |
| 1835 or port does not emit prologue and epilogue as RTL. */ | |
| 1836 if (profile_flag || function_entry_patch_area_size | |
| 1837 || !targetm.have_prologue () || !targetm.have_epilogue ()) | |
| 1838 flag_ipa_ra = 0; | |
| 1839 | |
| 1840 /* Enable -Werror=coverage-mismatch when -Werror and -Wno-error | |
| 1841 have not been set. */ | |
| 1842 if (!global_options_set.x_warnings_are_errors | |
| 1843 && warn_coverage_mismatch | |
| 1844 && (global_dc->classify_diagnostic[OPT_Wcoverage_mismatch] == | |
| 1845 DK_UNSPECIFIED)) | |
| 1846 diagnostic_classify_diagnostic (global_dc, OPT_Wcoverage_mismatch, | |
| 1847 DK_ERROR, UNKNOWN_LOCATION); | |
| 1848 | |
|
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1849 /* Save the current optimization options. */ |
| 111 | 1850 optimization_default_node = build_optimization_node (&global_options); |
|
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1851 optimization_current_node = optimization_default_node; |
| 111 | 1852 |
| 145 | 1853 if (flag_checking >= 2) |
| 1854 hash_table_sanitize_eq_limit | |
| 1855 = param_hash_table_verification_limit; | |
| 1856 | |
| 111 | 1857 /* Please don't change global_options after this point, those changes won't |
| 1858 be reflected in optimization_{default,current}_node. */ | |
| 0 | 1859 } |
| 1860 | |
| 1861 /* This function can be called multiple times to reinitialize the compiler | |
| 1862 back end when register classes or instruction sets have changed, | |
| 1863 before each function. */ | |
| 1864 static void | |
| 1865 backend_init_target (void) | |
| 1866 { | |
| 1867 /* This depends on stack_pointer_rtx. */ | |
| 1868 init_fake_stack_mems (); | |
| 1869 | |
| 1870 /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is | |
| 1871 mode-dependent. */ | |
| 1872 init_alias_target (); | |
| 1873 | |
| 1874 /* Depends on HARD_FRAME_POINTER_REGNUM. */ | |
| 111 | 1875 if (!ira_use_lra_p) |
| 1876 init_reload (); | |
| 1877 | |
| 1878 /* Depends on the enabled attribute. */ | |
| 1879 recog_init (); | |
| 0 | 1880 |
| 1881 /* The following initialization functions need to generate rtl, so | |
| 1882 provide a dummy function context for them. */ | |
| 1883 init_dummy_function_start (); | |
| 1884 | |
| 1885 /* rtx_cost is mode-dependent, so cached values need to be recomputed | |
| 1886 on a mode change. */ | |
| 1887 init_expmed (); | |
| 111 | 1888 init_lower_subreg (); |
| 1889 init_set_costs (); | |
| 1890 | |
| 1891 init_expr_target (); | |
| 1892 ira_init (); | |
| 0 | 1893 |
| 1894 /* We may need to recompute regno_save_code[] and regno_restore_code[] | |
| 1895 after a mode change as well. */ | |
|
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1896 caller_save_initialized_p = false; |
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1897 |
| 0 | 1898 expand_dummy_function_end (); |
| 1899 } | |
| 1900 | |
| 1901 /* Initialize the compiler back end. This function is called only once, | |
| 1902 when starting the compiler. */ | |
| 1903 static void | |
| 1904 backend_init (void) | |
| 1905 { | |
|
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1906 init_emit_once (); |
| 0 | 1907 |
| 1908 init_rtlanal (); | |
| 1909 init_inline_once (); | |
| 1910 init_varasm_once (); | |
| 1911 save_register_info (); | |
| 1912 | |
| 111 | 1913 /* Middle end needs this initialization for default mem attributes |
| 1914 used by early calls to make_decl_rtl. */ | |
| 1915 init_emit_regs (); | |
| 1916 | |
| 1917 /* Middle end needs this initialization for mode tables used to assign | |
| 1918 modes to vector variables. */ | |
| 1919 init_regs (); | |
| 0 | 1920 } |
| 1921 | |
| 1922 /* Initialize things that are both lang-dependent and target-dependent. | |
| 1923 This function can be called more than once if target parameters change. */ | |
| 1924 static void | |
| 1925 lang_dependent_init_target (void) | |
| 1926 { | |
| 1927 /* This creates various _DECL nodes, so needs to be called after the | |
| 1928 front end is initialized. It also depends on the HAVE_xxx macros | |
| 1929 generated from the target machine description. */ | |
| 1930 init_optabs (); | |
| 1931 | |
| 111 | 1932 gcc_assert (!this_target_rtl->target_specific_initialized); |
| 1933 } | |
| 1934 | |
| 1935 /* Perform initializations that are lang-dependent or target-dependent. | |
| 1936 but matters only for late optimizations and RTL generation. */ | |
| 0 | 1937 |
| 111 | 1938 static int rtl_initialized; |
| 1939 | |
| 1940 void | |
| 1941 initialize_rtl (void) | |
| 1942 { | |
| 1943 auto_timevar tv (g_timer, TV_INITIALIZE_RTL); | |
| 0 | 1944 |
| 111 | 1945 /* Initialization done just once per compilation, but delayed |
| 1946 till code generation. */ | |
| 1947 if (!rtl_initialized) | |
| 1948 ira_init_once (); | |
| 1949 rtl_initialized = true; | |
| 0 | 1950 |
| 111 | 1951 /* Target specific RTL backend initialization. */ |
| 1952 if (!this_target_rtl->target_specific_initialized) | |
| 1953 { | |
| 1954 backend_init_target (); | |
| 1955 this_target_rtl->target_specific_initialized = true; | |
| 1956 } | |
| 0 | 1957 } |
| 1958 | |
| 1959 /* Language-dependent initialization. Returns nonzero on success. */ | |
| 1960 static int | |
| 1961 lang_dependent_init (const char *name) | |
| 1962 { | |
| 1963 location_t save_loc = input_location; | |
| 1964 if (dump_base_name == 0) | |
| 1965 dump_base_name = name && name[0] ? name : "gccdump"; | |
| 1966 | |
| 1967 /* Other front-end initialization. */ | |
| 1968 input_location = BUILTINS_LOCATION; | |
| 1969 if (lang_hooks.init () == 0) | |
| 1970 return 0; | |
| 1971 input_location = save_loc; | |
| 1972 | |
| 111 | 1973 if (!flag_wpa) |
| 1974 { | |
| 1975 init_asm_output (name); | |
| 0 | 1976 |
| 111 | 1977 /* If stack usage information is desired, open the output file. */ |
| 145 | 1978 if (flag_stack_usage && !flag_generate_lto) |
| 111 | 1979 stack_usage_file = open_auxiliary_file ("su"); |
| 145 | 1980 |
| 1981 /* If call graph information is desired, open the output file. */ | |
| 1982 if (flag_callgraph_info && !flag_generate_lto) | |
| 1983 { | |
| 1984 callgraph_info_file = open_auxiliary_file ("ci"); | |
| 1985 /* Write the file header. */ | |
| 1986 fprintf (callgraph_info_file, | |
| 1987 "graph: { title: \"%s\"\n", main_input_filename); | |
| 1988 bitmap_obstack_initialize (NULL); | |
| 1989 callgraph_info_external_printed = BITMAP_ALLOC (NULL); | |
| 1990 } | |
| 111 | 1991 } |
|
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1992 |
| 0 | 1993 /* This creates various _DECL nodes, so needs to be called after the |
| 1994 front end is initialized. */ | |
| 1995 init_eh (); | |
| 1996 | |
| 1997 /* Do the target-specific parts of the initialization. */ | |
| 1998 lang_dependent_init_target (); | |
| 1999 | |
| 111 | 2000 if (!flag_wpa) |
| 2001 { | |
| 2002 /* If dbx symbol table desired, initialize writing it and output the | |
| 2003 predefined types. */ | |
| 2004 timevar_push (TV_SYMOUT); | |
| 0 | 2005 |
| 111 | 2006 /* Now we have the correct original filename, we can initialize |
| 2007 debug output. */ | |
| 2008 (*debug_hooks->init) (name); | |
| 0 | 2009 |
| 111 | 2010 timevar_pop (TV_SYMOUT); |
| 2011 } | |
| 0 | 2012 |
| 2013 return 1; | |
| 2014 } | |
| 2015 | |
| 2016 | |
| 2017 /* Reinitialize everything when target parameters, such as register usage, | |
| 2018 have changed. */ | |
| 2019 void | |
| 2020 target_reinit (void) | |
| 2021 { | |
|
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2022 struct rtl_data saved_x_rtl; |
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2023 rtx *saved_regno_reg_rtx; |
| 111 | 2024 tree saved_optimization_current_node; |
| 2025 struct target_optabs *saved_this_fn_optabs; | |
| 2026 | |
| 2027 /* Temporarily switch to the default optimization node, so that | |
| 2028 *this_target_optabs is set to the default, not reflecting | |
| 2029 whatever a previous function used for the optimize | |
| 2030 attribute. */ | |
| 2031 saved_optimization_current_node = optimization_current_node; | |
| 2032 saved_this_fn_optabs = this_fn_optabs; | |
| 2033 if (saved_optimization_current_node != optimization_default_node) | |
| 2034 { | |
| 2035 optimization_current_node = optimization_default_node; | |
| 2036 cl_optimization_restore | |
| 2037 (&global_options, | |
| 2038 TREE_OPTIMIZATION (optimization_default_node)); | |
| 2039 } | |
| 2040 this_fn_optabs = this_target_optabs; | |
|
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2041 |
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2042 /* Save *crtl and regno_reg_rtx around the reinitialization |
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2043 to allow target_reinit being called even after prepare_function_start. */ |
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2044 saved_regno_reg_rtx = regno_reg_rtx; |
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2045 if (saved_regno_reg_rtx) |
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2046 { |
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2047 saved_x_rtl = *crtl; |
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2048 memset (crtl, '\0', sizeof (*crtl)); |
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2049 regno_reg_rtx = NULL; |
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2050 } |
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2051 |
| 111 | 2052 this_target_rtl->target_specific_initialized = false; |
| 2053 | |
| 2054 /* This initializes hard_frame_pointer, and calls init_reg_modes_target() | |
| 2055 to initialize reg_raw_mode[]. */ | |
| 2056 init_emit_regs (); | |
| 2057 | |
| 2058 /* This invokes target hooks to set fixed_reg[] etc, which is | |
| 2059 mode-dependent. */ | |
| 2060 init_regs (); | |
| 0 | 2061 |
| 2062 /* Reinitialize lang-dependent parts. */ | |
| 2063 lang_dependent_init_target (); | |
|
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2064 |
| 111 | 2065 /* Restore the original optimization node. */ |
| 2066 if (saved_optimization_current_node != optimization_default_node) | |
| 2067 { | |
| 2068 optimization_current_node = saved_optimization_current_node; | |
| 2069 cl_optimization_restore (&global_options, | |
| 2070 TREE_OPTIMIZATION (optimization_current_node)); | |
| 2071 } | |
| 2072 this_fn_optabs = saved_this_fn_optabs; | |
| 2073 | |
| 2074 /* Restore regno_reg_rtx at the end, as free_after_compilation from | |
|
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2075 expand_dummy_function_end clears it. */ |
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2076 if (saved_regno_reg_rtx) |
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2077 { |
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2078 *crtl = saved_x_rtl; |
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2079 regno_reg_rtx = saved_regno_reg_rtx; |
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2080 saved_regno_reg_rtx = NULL; |
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2081 } |
| 0 | 2082 } |
| 2083 | |
| 2084 void | |
| 145 | 2085 dump_memory_report (const char *header) |
| 0 | 2086 { |
| 145 | 2087 /* Print significant header. */ |
| 2088 fputc ('\n', stderr); | |
| 2089 for (unsigned i = 0; i < 80; i++) | |
| 2090 fputc ('#', stderr); | |
| 2091 fprintf (stderr, "\n# %-77s#\n", header); | |
| 2092 for (unsigned i = 0; i < 80; i++) | |
| 2093 fputc ('#', stderr); | |
| 2094 fputs ("\n\n", stderr); | |
| 2095 | |
| 111 | 2096 dump_line_table_statistics (); |
| 0 | 2097 ggc_print_statistics (); |
| 2098 stringpool_statistics (); | |
| 2099 dump_tree_statistics (); | |
| 2100 dump_gimple_statistics (); | |
| 2101 dump_rtx_statistics (); | |
| 2102 dump_alloc_pool_statistics (); | |
| 2103 dump_bitmap_statistics (); | |
| 111 | 2104 dump_hash_table_loc_statistics (); |
| 0 | 2105 dump_vec_loc_statistics (); |
| 145 | 2106 dump_ggc_loc_statistics (); |
|
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2107 dump_alias_stats (stderr); |
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2108 dump_pta_stats (stderr); |
| 0 | 2109 } |
| 2110 | |
| 2111 /* Clean up: close opened files, etc. */ | |
| 2112 | |
| 2113 static void | |
|
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2114 finalize (bool no_backend) |
| 0 | 2115 { |
| 2116 /* Close the dump files. */ | |
| 2117 if (flag_gen_aux_info) | |
| 2118 { | |
| 2119 fclose (aux_info_file); | |
| 111 | 2120 aux_info_file = NULL; |
|
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2121 if (seen_error ()) |
| 0 | 2122 unlink (aux_info_file_name); |
| 2123 } | |
| 2124 | |
| 2125 /* Close non-debugging input and output files. Take special care to note | |
| 2126 whether fclose returns an error, since the pages might still be on the | |
| 2127 buffer chain while the file is open. */ | |
| 2128 | |
| 2129 if (asm_out_file) | |
| 2130 { | |
| 2131 if (ferror (asm_out_file) != 0) | |
| 111 | 2132 fatal_error (input_location, "error writing to %s: %m", asm_file_name); |
| 0 | 2133 if (fclose (asm_out_file) != 0) |
| 111 | 2134 fatal_error (input_location, "error closing %s: %m", asm_file_name); |
| 2135 asm_out_file = NULL; | |
| 0 | 2136 } |
| 2137 | |
|
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2138 if (stack_usage_file) |
| 111 | 2139 { |
| 2140 fclose (stack_usage_file); | |
| 2141 stack_usage_file = NULL; | |
| 2142 } | |
| 2143 | |
| 145 | 2144 if (callgraph_info_file) |
| 2145 { | |
| 2146 fputs ("}\n", callgraph_info_file); | |
| 2147 fclose (callgraph_info_file); | |
| 2148 callgraph_info_file = NULL; | |
| 2149 BITMAP_FREE (callgraph_info_external_printed); | |
| 2150 bitmap_obstack_release (NULL); | |
| 2151 } | |
| 2152 | |
| 111 | 2153 if (seen_error ()) |
| 2154 coverage_remove_note_file (); | |
| 0 | 2155 |
|
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2156 if (!no_backend) |
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2157 { |
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2158 statistics_fini (); |
| 131 | 2159 debuginfo_fini (); |
|
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2160 |
| 111 | 2161 g->get_passes ()->finish_optimization_passes (); |
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2162 |
| 111 | 2163 lra_finish_once (); |
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|
2164 } |
| 0 | 2165 |
| 2166 if (mem_report) | |
| 145 | 2167 dump_memory_report ("Final"); |
| 0 | 2168 |
| 111 | 2169 if (profile_report) |
| 2170 dump_profile_report (); | |
| 2171 | |
| 0 | 2172 /* Language-specific end of compilation actions. */ |
| 2173 lang_hooks.finish (); | |
| 2174 } | |
| 2175 | |
| 111 | 2176 static bool |
| 2177 standard_type_bitsize (int bitsize) | |
| 2178 { | |
| 2179 /* As a special exception, we always want __int128 enabled if possible. */ | |
| 2180 if (bitsize == 128) | |
| 2181 return false; | |
| 2182 if (bitsize == CHAR_TYPE_SIZE | |
| 2183 || bitsize == SHORT_TYPE_SIZE | |
| 2184 || bitsize == INT_TYPE_SIZE | |
| 2185 || bitsize == LONG_TYPE_SIZE | |
| 2186 || bitsize == LONG_LONG_TYPE_SIZE) | |
| 2187 return true; | |
| 2188 return false; | |
| 2189 } | |
| 2190 | |
| 0 | 2191 /* Initialize the compiler, and compile the input file. */ |
| 2192 static void | |
| 111 | 2193 do_compile () |
| 0 | 2194 { |
| 2195 process_options (); | |
| 2196 | |
| 2197 /* Don't do any more if an error has already occurred. */ | |
|
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2198 if (!seen_error ()) |
| 0 | 2199 { |
| 111 | 2200 int i; |
| 2201 | |
| 2202 timevar_start (TV_PHASE_SETUP); | |
| 2203 | |
| 145 | 2204 if (flag_save_optimization_record) |
| 2205 { | |
| 2206 dump_context::get ().set_json_writer (new optrecord_json_writer ()); | |
| 2207 } | |
| 131 | 2208 |
| 0 | 2209 /* This must be run always, because it is needed to compute the FP |
| 2210 predefined macros, such as __LDBL_MAX__, for targets using non | |
| 2211 default FP formats. */ | |
| 2212 init_adjust_machine_modes (); | |
| 111 | 2213 init_derived_machine_modes (); |
| 2214 | |
| 2215 /* This must happen after the backend has a chance to process | |
| 2216 command line options, but before the parsers are | |
| 2217 initialized. */ | |
| 2218 for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
| 2219 if (targetm.scalar_mode_supported_p (int_n_data[i].m) | |
| 2220 && ! standard_type_bitsize (int_n_data[i].bitsize)) | |
| 2221 int_n_enabled_p[i] = true; | |
| 2222 else | |
| 2223 int_n_enabled_p[i] = false; | |
| 0 | 2224 |
| 145 | 2225 /* Initialize mpfrs exponent range. This is important to get |
| 2226 underflow/overflow in a reasonable timeframe. */ | |
| 2227 machine_mode mode; | |
| 2228 int min_exp = -1; | |
| 2229 int max_exp = 1; | |
| 2230 FOR_EACH_MODE_IN_CLASS (mode, MODE_FLOAT) | |
| 2231 if (SCALAR_FLOAT_MODE_P (mode)) | |
| 2232 { | |
| 2233 const real_format *fmt = REAL_MODE_FORMAT (mode); | |
| 2234 if (fmt) | |
| 2235 { | |
| 2236 /* fmt->emin - fmt->p + 1 should be enough but the | |
| 2237 back-and-forth dance in real_to_decimal_for_mode we | |
| 2238 do for checking fails due to rounding effects then. */ | |
| 2239 if ((fmt->emin - fmt->p) < min_exp) | |
| 2240 min_exp = fmt->emin - fmt->p; | |
| 2241 if (fmt->emax > max_exp) | |
| 2242 max_exp = fmt->emax; | |
| 2243 } | |
| 2244 } | |
| 2245 /* E.g. mpc_norm assumes it can square a number without bothering with | |
| 2246 with range scaling, so until that is fixed, double the minimum | |
| 2247 and maximum exponents, plus add some buffer for arithmetics | |
| 2248 on the squared numbers. */ | |
| 2249 if (mpfr_set_emin (2 * (min_exp - 1)) | |
| 2250 || mpfr_set_emax (2 * (max_exp + 1))) | |
| 2251 sorry ("mpfr not configured to handle all floating modes"); | |
| 2252 | |
| 0 | 2253 /* Set up the back-end if requested. */ |
| 2254 if (!no_backend) | |
| 2255 backend_init (); | |
| 2256 | |
| 2257 /* Language-dependent initialization. Returns true on success. */ | |
| 2258 if (lang_dependent_init (main_input_filename)) | |
| 111 | 2259 { |
| 2260 /* Initialize yet another pass. */ | |
| 2261 | |
| 2262 ggc_protect_identifiers = true; | |
| 2263 | |
| 2264 symtab->initialize (); | |
| 2265 init_final (main_input_filename); | |
| 2266 coverage_init (aux_base_name); | |
| 2267 statistics_init (); | |
| 131 | 2268 debuginfo_init (); |
| 111 | 2269 invoke_plugin_callbacks (PLUGIN_START_UNIT, NULL); |
| 2270 | |
| 2271 timevar_stop (TV_PHASE_SETUP); | |
| 2272 | |
| 2273 compile_file (); | |
| 2274 } | |
| 2275 else | |
| 2276 { | |
| 2277 timevar_stop (TV_PHASE_SETUP); | |
| 2278 } | |
| 2279 | |
| 2280 timevar_start (TV_PHASE_FINALIZE); | |
| 0 | 2281 |
|
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|
2282 finalize (no_backend); |
| 111 | 2283 |
| 2284 timevar_stop (TV_PHASE_FINALIZE); | |
| 0 | 2285 } |
| 111 | 2286 } |
| 2287 | |
| 2288 toplev::toplev (timer *external_timer, | |
| 2289 bool init_signals) | |
| 2290 : m_use_TV_TOTAL (external_timer == NULL), | |
| 2291 m_init_signals (init_signals) | |
| 2292 { | |
| 2293 if (external_timer) | |
| 2294 g_timer = external_timer; | |
| 2295 } | |
| 2296 | |
| 2297 toplev::~toplev () | |
| 2298 { | |
| 2299 if (g_timer && m_use_TV_TOTAL) | |
| 2300 { | |
| 2301 g_timer->stop (TV_TOTAL); | |
| 2302 g_timer->print (stderr); | |
| 2303 delete g_timer; | |
| 2304 g_timer = NULL; | |
| 2305 } | |
| 2306 } | |
| 2307 | |
| 2308 /* Potentially call timevar_init (which will create g_timevars if it | |
| 2309 doesn't already exist). */ | |
| 0 | 2310 |
| 111 | 2311 void |
| 2312 toplev::start_timevars () | |
| 2313 { | |
| 2314 if (time_report || !quiet_flag || flag_detailed_statistics) | |
| 2315 timevar_init (); | |
| 2316 | |
| 2317 timevar_start (TV_TOTAL); | |
| 2318 } | |
| 2319 | |
| 2320 /* Handle -fself-test. */ | |
| 2321 | |
| 2322 void | |
| 2323 toplev::run_self_tests () | |
| 2324 { | |
| 2325 if (no_backend) | |
| 2326 { | |
| 145 | 2327 error_at (UNKNOWN_LOCATION, "self-tests incompatible with %<-E%>"); |
| 111 | 2328 return; |
| 2329 } | |
| 2330 #if CHECKING_P | |
| 2331 /* Reset some state. */ | |
| 2332 input_location = UNKNOWN_LOCATION; | |
| 2333 bitmap_obstack_initialize (NULL); | |
| 2334 | |
| 2335 /* Run the tests; any failures will lead to an abort of the process. | |
| 2336 Use "make selftests-gdb" to run under the debugger. */ | |
| 2337 ::selftest::run_tests (); | |
| 2338 | |
| 2339 /* Cleanup. */ | |
| 2340 bitmap_obstack_release (NULL); | |
| 2341 #else | |
| 2342 inform (UNKNOWN_LOCATION, "self-tests are not enabled in this build"); | |
| 2343 #endif /* #if CHECKING_P */ | |
| 0 | 2344 } |
| 2345 | |
| 2346 /* Entry point of cc1, cc1plus, jc1, f771, etc. | |
| 2347 Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
| 2348 any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
| 2349 | |
| 2350 It is not safe to call this function more than once. */ | |
| 2351 | |
| 2352 int | |
| 111 | 2353 toplev::main (int argc, char **argv) |
| 0 | 2354 { |
| 111 | 2355 /* Parsing and gimplification sometimes need quite large stack. |
| 2356 Increase stack size limits if possible. */ | |
| 2357 stack_limit_increase (64 * 1024 * 1024); | |
| 2358 | |
|
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2359 expandargv (&argc, &argv); |
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2360 |
| 0 | 2361 /* Initialization of GCC's environment, and diagnostics. */ |
| 111 | 2362 general_init (argv[0], m_init_signals); |
| 0 | 2363 |
|
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2364 /* One-off initialization of options that does not need to be |
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2365 repeated when options are added for particular functions. */ |
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2366 init_options_once (); |
| 111 | 2367 init_opts_obstack (); |
|
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2368 |
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2369 /* Initialize global options structures; this must be repeated for |
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2370 each structure used for parsing options. */ |
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2371 init_options_struct (&global_options, &global_options_set); |
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2372 lang_hooks.init_options_struct (&global_options); |
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2373 |
| 145 | 2374 /* Init GGC heuristics must be caller after we initialize |
| 2375 options. */ | |
| 2376 init_ggc_heuristics (); | |
| 2377 | |
|
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2378 /* Convert the options to an array. */ |
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2379 decode_cmdline_options_to_array_default_mask (argc, |
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2380 CONST_CAST2 (const char **, |
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2381 char **, argv), |
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2382 &save_decoded_options, |
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2383 &save_decoded_options_count); |
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2384 |
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2385 /* Perform language-specific options initialization. */ |
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2386 lang_hooks.init_options (save_decoded_options_count, save_decoded_options); |
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2387 |
| 0 | 2388 /* Parse the options and do minimal processing; basically just |
| 2389 enough to default flags appropriately. */ | |
|
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2390 decode_options (&global_options, &global_options_set, |
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2391 save_decoded_options, save_decoded_options_count, |
| 111 | 2392 UNKNOWN_LOCATION, global_dc, |
| 2393 targetm.target_option.override); | |
|
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2394 |
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2395 handle_common_deferred_options (); |
| 0 | 2396 |
| 2397 init_local_tick (); | |
| 2398 | |
|
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2399 initialize_plugins (); |
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2400 |
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2401 if (version_flag) |
| 111 | 2402 print_version (stderr, "", true); |
|
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2403 |
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2404 if (help_flag) |
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2405 print_plugins_help (stderr, ""); |
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2406 |
| 0 | 2407 /* Exit early if we can (e.g. -help). */ |
| 2408 if (!exit_after_options) | |
| 111 | 2409 { |
| 2410 if (m_use_TV_TOTAL) | |
| 2411 start_timevars (); | |
| 2412 do_compile (); | |
| 2413 } | |
| 2414 | |
| 2415 if (warningcount || errorcount || werrorcount) | |
| 2416 print_ignored_options (); | |
| 2417 | |
| 2418 if (flag_self_test) | |
| 2419 run_self_tests (); | |
| 0 | 2420 |
| 111 | 2421 /* Invoke registered plugin callbacks if any. Some plugins could |
| 2422 emit some diagnostics here. */ | |
| 2423 invoke_plugin_callbacks (PLUGIN_FINISH, NULL); | |
| 2424 | |
| 2425 if (flag_diagnostics_generate_patch) | |
| 2426 { | |
| 2427 gcc_assert (global_dc->edit_context_ptr); | |
| 2428 | |
| 2429 pretty_printer pp; | |
| 2430 pp_show_color (&pp) = pp_show_color (global_dc->printer); | |
| 2431 global_dc->edit_context_ptr->print_diff (&pp, true); | |
| 2432 pp_flush (&pp); | |
| 2433 } | |
| 2434 | |
|
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2435 diagnostic_finish (global_dc); |
| 0 | 2436 |
| 111 | 2437 finalize_plugins (); |
|
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2438 |
| 111 | 2439 after_memory_report = true; |
| 2440 | |
| 2441 if (seen_error () || werrorcount) | |
| 0 | 2442 return (FATAL_EXIT_CODE); |
| 2443 | |
| 2444 return (SUCCESS_EXIT_CODE); | |
| 2445 } | |
| 111 | 2446 |
| 2447 /* For those that want to, this function aims to clean up enough state that | |
| 2448 you can call toplev::main again. */ | |
| 2449 void | |
| 2450 toplev::finalize (void) | |
| 2451 { | |
| 2452 rtl_initialized = false; | |
| 2453 this_target_rtl->target_specific_initialized = false; | |
| 2454 | |
| 2455 /* Needs to be called before cgraph_c_finalize since it uses symtab. */ | |
| 2456 ipa_reference_c_finalize (); | |
| 131 | 2457 ipa_fnsummary_c_finalize (); |
| 111 | 2458 |
| 2459 cgraph_c_finalize (); | |
| 2460 cgraphunit_c_finalize (); | |
| 2461 dwarf2out_c_finalize (); | |
| 2462 gcse_c_finalize (); | |
| 2463 ipa_cp_c_finalize (); | |
| 2464 ira_costs_c_finalize (); | |
| 2465 | |
| 2466 /* save_decoded_options uses opts_obstack, so these must | |
| 2467 be cleaned up together. */ | |
| 2468 obstack_free (&opts_obstack, NULL); | |
| 2469 XDELETEVEC (save_decoded_options); | |
| 2470 save_decoded_options = NULL; | |
| 2471 save_decoded_options_count = 0; | |
| 2472 | |
| 2473 /* Clean up the context (and pass_manager etc). */ | |
| 2474 delete g; | |
| 2475 g = NULL; | |
| 2476 | |
| 2477 } |