1 /* Top level of GCC compilers (cc1, cc1plus, etc.)
2 Copyright (C) 1987-2020 Free Software Foundation, Inc.
4 This file is part of GCC.
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
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
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/>. */
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. */
27 #include "coretypes.h"
33 #include "alloc-pool.h"
37 #include "optabs-libfuncs.h"
38 #include "insn-config.h"
43 #include "diagnostic.h"
45 #include "tree-inline.h"
46 #include "realmpfr.h" /* For GMP/MPFR/MPC versions, in print_version. */
49 #include "insn-attr.h"
54 #include "tree-diagnostic.h"
57 #include "dwarf2asm.h"
59 #include "common/common-target.h"
60 #include "langhooks.h"
61 #include "cfgloop.h" /* for init_set_costs */
62 #include "hosthooks.h"
64 #include "opts-diagnostic.h"
65 #include "stringpool.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"
79 #include "omp-offload.h"
80 #include "hsa-common.h"
81 #include "edit-context.h"
82 #include "tree-pass.h"
84 #include "ipa-fnsummary.h"
85 #include "dump-context.h"
86 #include "print-tree.h"
87 #include "optinfo-emit-json.h"
89 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO)
93 #ifdef XCOFF_DEBUGGING_INFO
94 #include "xcoffout.h" /* Needed for external data declarations. */
100 #include <isl/version.h>
103 static void general_init (const char *, bool);
104 static void do_compile ();
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 *);
109 static void finalize (bool);
111 static void crash_signal (int) ATTRIBUTE_NORETURN
;
112 static void compile_file (void);
114 /* True if we don't need a backend (e.g. preprocessing only). */
115 static bool no_backend
;
117 /* Length of line when printing switch values. */
120 /* Decoded options, and number of such options. */
121 struct cl_decoded_option
*save_decoded_options
;
122 unsigned int save_decoded_options_count
;
124 /* Used to enable -fvar-tracking, -fweb and -frename-registers according
125 to optimize in process_options (). */
126 #define AUTODETECT_VALUE 2
128 /* Debug hooks - dependent upon command line options. */
130 const struct gcc_debug_hooks
*debug_hooks
;
132 /* The FUNCTION_DECL for the function currently being compiled,
133 or 0 if between functions. */
134 tree current_function_decl
;
136 /* Set to the FUNC_BEGIN label of the current function, or NULL
138 const char * current_function_func_begin_label
;
140 /* A random sequence of characters, unless overridden by user. */
141 static const char *flag_random_seed
;
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. */
148 /* Random number for this compilation */
149 HOST_WIDE_INT random_seed
;
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. */
162 class target_flag_state default_target_flag_state
;
163 #if SWITCHABLE_TARGET
164 class target_flag_state
*this_target_flag_state
= &default_target_flag_state
;
166 #define this_target_flag_state (&default_target_flag_state)
169 /* The user symbol prefix after having resolved same. */
170 const char *user_label_prefix
;
172 /* Output files for assembler code (real compiler output)
173 and debugging dumps. */
177 FILE *callgraph_info_file
= NULL
;
178 static bitmap callgraph_info_external_printed
;
179 FILE *stack_usage_file
= NULL
;
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
186 static const char *src_pwd
;
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
194 set_src_pwd (const char *pwd
)
198 if (strcmp (src_pwd
, pwd
) == 0)
204 src_pwd
= xstrdup (pwd
);
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
225 /* Called when the start of a function definition is parsed,
226 this function prints on stderr the name of the function. */
228 announce_function (tree decl
)
232 if (rtl_dump_and_exit
)
233 fprintf (stderr
, "%s ",
234 identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl
))));
236 fprintf (stderr
, " %s",
237 identifier_to_locale (lang_hooks
.decl_printable_name (decl
, 2)));
239 pp_needs_newline (global_dc
->printer
) = true;
240 diagnostic_set_last_function (global_dc
, (diagnostic_info
*) NULL
);
244 /* Initialize local_tick with the time of day, or -1 if
245 flag_random_seed is set. */
248 init_local_tick (void)
250 if (!flag_random_seed
)
252 #ifdef HAVE_GETTIMEOFDAY
256 gettimeofday (&tv
, NULL
);
257 local_tick
= (unsigned) tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
261 time_t now
= time (NULL
);
263 if (now
!= (time_t)-1)
264 local_tick
= (unsigned) now
;
272 /* Obtain the random_seed. Unless NOINIT, initialize it if
273 it's not provided in the command line. */
276 get_random_seed (bool noinit
)
278 if (!random_seed
&& !noinit
)
280 int fd
= open ("/dev/urandom", O_RDONLY
);
283 if (read (fd
, &random_seed
, sizeof (random_seed
))
284 != sizeof (random_seed
))
289 random_seed
= local_tick
^ getpid ();
294 /* Set flag_random_seed to VAL, and if non-null, reinitialize random_seed. */
297 set_random_seed (const char *val
)
299 flag_random_seed
= val
;
300 if (flag_random_seed
)
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
);
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. */
316 crash_signal (int signo
)
318 signal (signo
, SIG_DFL
);
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
)
324 output_operand_lossage ("unrecoverable error");
325 exit (FATAL_EXIT_CODE
);
328 internal_error ("%s", strsignal (signo
));
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. */
336 wrapup_global_declaration_1 (tree decl
)
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;
344 if (VAR_P (decl
) && DECL_SIZE (decl
) == 0)
345 lang_hooks
.finish_incomplete_decl (decl
);
348 /* A subroutine of wrapup_global_declarations. Decide whether or not DECL
349 needs to be output. Return true if it is output. */
352 wrapup_global_declaration_2 (tree decl
)
354 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
)
355 || (VAR_P (decl
) && DECL_HAS_VALUE_EXPR_P (decl
)))
358 /* Don't write out static consts, unless we still need them.
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.
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.
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.
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. */
383 if (VAR_P (decl
) && TREE_STATIC (decl
))
387 node
= varpool_node::get (decl
);
389 if (!node
&& flag_ltrans
)
391 else if (node
&& node
->definition
)
393 else if (node
&& node
->alias
)
395 else if (!symtab
->global_info_ready
397 || TREE_USED (DECL_ASSEMBLER_NAME (decl
))))
399 else if (node
&& node
->analyzed
)
401 else if (DECL_COMDAT (decl
))
403 else if (TREE_READONLY (decl
) && !TREE_PUBLIC (decl
)
404 && (optimize
|| !flag_keep_static_consts
405 || DECL_ARTIFICIAL (decl
)))
410 rest_of_decl_compilation (decl
, 1, 1);
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. */
424 wrapup_global_declarations (tree
*vec
, int len
)
426 bool reconsider
, output_something
= false;
429 for (i
= 0; i
< len
; i
++)
430 wrapup_global_declaration_1 (vec
[i
]);
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. */
438 for (i
= 0; i
< len
; i
++)
439 reconsider
|= wrapup_global_declaration_2 (vec
[i
]);
441 output_something
= true;
445 return output_something
;
448 /* Compile an entire translation unit. Write a file of assembly
449 output and various debugging dumps. */
454 timevar_start (TV_PHASE_PARSING
);
455 timevar_push (TV_PARSE_GLOBAL
);
457 /* Parse entire file and generate initial debug information. */
458 lang_hooks
.parse_file ();
460 timevar_pop (TV_PARSE_GLOBAL
);
461 timevar_stop (TV_PHASE_PARSING
);
463 if (flag_dump_locations
)
464 dump_location_info (stderr
);
466 /* Compilation is now finished except for writing
467 what's left of the symbol table output. */
469 if (flag_syntax_only
|| flag_wpa
)
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
;
477 ggc_protect_identifiers
= false;
479 /* Run the actual compilation process. */
482 timevar_start (TV_PHASE_OPT_GEN
);
483 symtab
->finalize_compilation_unit ();
484 timevar_stop (TV_PHASE_OPT_GEN
);
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
491 if (lang_hooks
.decls
.post_compilation_parsing_cleanups
)
492 lang_hooks
.decls
.post_compilation_parsing_cleanups ();
494 dump_context::get ().finish_any_json_writer ();
499 timevar_start (TV_PHASE_LATE_ASM
);
501 /* Compilation unit is finalized. When producing non-fat LTO object, we are
502 basically finished. */
503 if ((in_lto_p
&& flag_incremental_link
!= INCREMENTAL_LINK_LTO
)
504 || !flag_lto
|| flag_fat_lto_objects
)
506 /* File-scope initialization for AddressSanitizer. */
507 if (flag_sanitize
& SANITIZE_ADDRESS
)
510 if (flag_sanitize
& SANITIZE_THREAD
)
517 output_shared_constant_pool ();
518 output_object_blocks ();
519 finish_tm_clone_pairs ();
521 /* Write out any pending weak symbol declarations. */
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 ();
528 /* Do dbx symbols. */
529 timevar_push (TV_SYMOUT
);
531 #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO
532 dwarf2out_frame_finish ();
536 (*debug_hooks
->finish
) (main_input_filename
);
538 timevar_pop (TV_SYMOUT
);
540 /* Output some stuff at end of file if nec. */
542 dw2_output_indirect_constants ();
544 /* Flush any pending external directives. */
545 process_pending_assemble_externals ();
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
)
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);
559 ASM_OUTPUT_COMMON (asm_out_file
, "__gnu_lto_slim",
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. */
570 const char *pkg_version
= "(GNU) ";
573 if (strcmp ("(GCC) ", pkgversion_string
))
574 pkg_version
= pkgversion_string
;
576 ident_str
= ACONCAT (("GCC: ", pkg_version
, version_string
, NULL
));
577 targetm
.asm_out
.output_ident (ident_str
);
580 /* Auto profile finalization. */
581 if (flag_auto_profile
)
584 /* Invoke registered plugin callbacks. */
585 invoke_plugin_callbacks (PLUGIN_FINISH_UNIT
, NULL
);
587 /* This must be at the end. Some target ports emit end of file directives
588 into the assembly file here, and hence we cannot output anything to the
589 assembly file after this point. */
590 targetm
.asm_out
.file_end ();
592 timevar_stop (TV_PHASE_LATE_ASM
);
595 /* Print version information to FILE.
596 Each line begins with INDENT (for the case where FILE is the
597 assembler output file).
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).
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
609 print_version (FILE *file
, const char *indent
, bool show_global_state
)
611 static const char fmt1
[] =
613 N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ")
615 N_("%s%s%s %sversion %s (%s) compiled by CC, ")
618 static const char fmt2
[] =
619 N_("GMP version %s, MPFR version %s, MPC version %s, isl version %s\n");
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");
625 #define __VERSION__ "[?]"
628 file
== stderr
? _(fmt1
) : fmt1
,
629 indent
, *indent
!= 0 ? " " : "",
630 lang_hooks
.name
, pkgversion_string
, version_string
, TARGET_NAME
,
631 indent
, __VERSION__
);
633 /* We need to stringify the GMP macro values. Ugh, gmp_version has
634 two string formats, "i.j.k" and "i.j" when k is zero. As of
635 gmp-4.3.0, GMP always uses the 3 number format. */
636 #define GCC_GMP_STRINGIFY_VERSION3(X) #X
637 #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3 (X)
638 #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z))
639 #define GCC_GMP_VERSION \
640 GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL)
641 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0
642 #define GCC_GMP_STRINGIFY_VERSION \
643 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION) "." \
644 GCC_GMP_STRINGIFY_VERSION2 (__GNU_MP_VERSION_MINOR)
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)
652 file
== stderr
? _(fmt2
) : fmt2
,
653 GCC_GMP_STRINGIFY_VERSION
, MPFR_VERSION_STRING
, MPC_VERSION_STRING
,
660 if (strcmp (GCC_GMP_STRINGIFY_VERSION
, gmp_version
))
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 ()))
667 file
== stderr
? _(fmt3
) : fmt3
,
668 indent
, *indent
!= 0 ? " " : "",
669 "MPFR", MPFR_VERSION_STRING
, mpfr_get_version ());
670 if (strcmp (MPC_VERSION_STRING
, mpc_get_version ()))
672 file
== stderr
? _(fmt3
) : fmt3
,
673 indent
, *indent
!= 0 ? " " : "",
674 "MPC", MPC_VERSION_STRING
, mpc_get_version ());
676 if (show_global_state
)
679 file
== stderr
? _(fmt4
) : fmt4
,
680 indent
, *indent
!= 0 ? " " : "",
681 param_ggc_min_expand
, param_ggc_min_heapsize
);
683 print_plugins_versions (file
, indent
);
688 print_to_asm_out_file (print_switch_type type
, const char * text
)
690 bool prepend_sep
= true;
694 case SWITCH_TYPE_LINE_END
:
695 putc ('\n', asm_out_file
);
698 case SWITCH_TYPE_LINE_START
:
699 fputs (ASM_COMMENT_START
, asm_out_file
);
700 return strlen (ASM_COMMENT_START
);
702 case SWITCH_TYPE_DESCRIPTIVE
:
703 if (ASM_COMMENT_START
[0] == 0)
706 case SWITCH_TYPE_PASSED
:
707 case SWITCH_TYPE_ENABLED
:
709 fputc (' ', asm_out_file
);
710 fputs (text
, asm_out_file
);
711 /* No need to return the length here as
712 print_single_switch has already done it. */
721 print_to_stderr (print_switch_type type
, const char * text
)
725 case SWITCH_TYPE_LINE_END
:
729 case SWITCH_TYPE_LINE_START
:
732 case SWITCH_TYPE_PASSED
:
733 case SWITCH_TYPE_ENABLED
:
737 case SWITCH_TYPE_DESCRIPTIVE
:
738 fputs (text
, stderr
);
739 /* No need to return the length here as
740 print_single_switch has already done it. */
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. */
753 print_single_switch (print_switch_fn_type print_fn
,
755 print_switch_type type
,
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;
764 && pos
+ len
> MAX_LINE
)
766 print_fn (SWITCH_TYPE_LINE_END
, NULL
);
771 pos
+= print_fn (SWITCH_TYPE_LINE_START
, NULL
);
773 print_fn (type
, text
);
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. */
783 print_switch_values (print_switch_fn_type print_fn
)
788 /* Print the options as passed. */
789 pos
= print_single_switch (print_fn
, pos
,
790 SWITCH_TYPE_DESCRIPTIVE
, _("options passed: "));
792 for (j
= 1; j
< save_decoded_options_count
; j
++)
794 switch (save_decoded_options
[j
].opt_index
)
799 case OPT_dumpbase_ext
:
807 pos
= print_single_switch (print_fn
, pos
, SWITCH_TYPE_PASSED
,
808 save_decoded_options
[j
].orig_option_with_args_text
);
812 print_fn (SWITCH_TYPE_LINE_END
, NULL
);
814 /* Print the -f and -m options that have been enabled.
815 We don't handle language specific options but printing argv
817 pos
= print_single_switch (print_fn
, 0,
818 SWITCH_TYPE_DESCRIPTIVE
, _("options enabled: "));
820 unsigned lang_mask
= lang_hooks
.option_lang_mask ();
821 for (j
= 0; j
< cl_options_count
; j
++)
822 if (cl_options
[j
].cl_report
823 && option_enabled (j
, lang_mask
, &global_options
) > 0)
824 pos
= print_single_switch (print_fn
, pos
,
825 SWITCH_TYPE_ENABLED
, cl_options
[j
].opt_text
);
827 print_fn (SWITCH_TYPE_LINE_END
, NULL
);
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. */
835 init_asm_output (const char *name
)
837 if (name
== NULL
&& asm_file_name
== 0)
838 asm_out_file
= stdout
;
841 if (asm_file_name
== 0)
843 int len
= strlen (dump_base_name
);
844 char *dumpname
= XNEWVEC (char, len
+ 6);
846 memcpy (dumpname
, dump_base_name
, len
+ 1);
847 strip_off_ending (dumpname
, len
);
848 strcat (dumpname
, ".s");
849 asm_file_name
= dumpname
;
851 if (!strcmp (asm_file_name
, "-"))
852 asm_out_file
= stdout
;
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");
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",
862 if (asm_out_file
== 0)
863 fatal_error (UNKNOWN_LOCATION
,
864 "cannot open %qs for writing: %m", asm_file_name
);
867 if (!flag_syntax_only
)
869 targetm
.asm_out
.file_start ();
871 if (flag_record_gcc_switches
)
873 if (targetm
.asm_out
.record_gcc_switches
)
875 /* Let the target know that we are about to start recording. */
876 targetm
.asm_out
.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE
,
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
,
885 inform (UNKNOWN_LOCATION
,
886 "%<-frecord-gcc-switches%> is not supported by "
887 "the current target");
890 if (flag_verbose_asm
)
892 /* Print the list of switches in effect
893 into the assembler file as comments. */
894 print_version (asm_out_file
, ASM_COMMENT_START
, true);
895 print_switch_values (print_to_asm_out_file
);
896 putc ('\n', asm_out_file
);
901 /* A helper function; used as the reallocator function for cpp's line
904 realloc_for_line_map (void *ptr
, size_t len
)
906 return ggc_realloc (ptr
, len
);
909 /* A helper function: used as the allocator function for
910 identifier_to_locale. */
912 alloc_for_identifier_to_locale (size_t len
)
914 return ggc_alloc_atomic (len
);
917 /* Output stack usage information. */
919 output_stack_usage_1 (FILE *cf
)
921 static bool warning_issued
= false;
922 enum stack_usage_kind_type
{ STATIC
= 0, DYNAMIC
, DYNAMIC_BOUNDED
};
923 const char *stack_usage_kind_str
[] = {
928 HOST_WIDE_INT stack_usage
= current_function_static_stack_size
;
929 enum stack_usage_kind_type stack_usage_kind
;
935 warning (0, "stack usage computation not supported for this target");
936 warning_issued
= true;
941 stack_usage_kind
= STATIC
;
943 /* Add the maximum amount of space pushed onto the stack. */
944 if (maybe_ne (current_function_pushed_stack_size
, 0))
947 if (current_function_pushed_stack_size
.is_constant (&extra
))
949 stack_usage
+= extra
;
950 stack_usage_kind
= DYNAMIC_BOUNDED
;
954 extra
= constant_lower_bound (current_function_pushed_stack_size
);
955 stack_usage
+= extra
;
956 stack_usage_kind
= DYNAMIC
;
960 /* Now on to the tricky part: dynamic stack allocation. */
961 if (current_function_allocates_dynamic_stack_space
)
963 if (stack_usage_kind
!= DYNAMIC
)
965 if (current_function_has_unbounded_dynamic_stack_size
)
966 stack_usage_kind
= DYNAMIC
;
968 stack_usage_kind
= DYNAMIC_BOUNDED
;
971 /* Add the size even in the unbounded case, this can't hurt. */
972 stack_usage
+= current_function_dynamic_stack_size
;
975 if (cf
&& flag_callgraph_info
& CALLGRAPH_INFO_STACK_USAGE
)
976 fprintf (cf
, "\\n" HOST_WIDE_INT_PRINT_DEC
" bytes (%s)",
978 stack_usage_kind_str
[stack_usage_kind
]);
980 if (stack_usage_file
)
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
]);
988 if (warn_stack_usage
>= 0 && warn_stack_usage
< HOST_WIDE_INT_MAX
)
990 const location_t loc
= DECL_SOURCE_LOCATION (current_function_decl
);
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
)
996 if (stack_usage_kind
== DYNAMIC_BOUNDED
)
998 OPT_Wstack_usage_
, "stack usage might be %wu bytes",
1001 warning_at (loc
, OPT_Wstack_usage_
, "stack usage is %wu bytes",
1007 /* Dump placeholder node for indirect calls in VCG format. */
1009 #define INDIRECT_CALL_NAME "__indirect_call"
1012 dump_final_node_vcg_start (FILE *f
, tree decl
)
1014 fputs ("node: { title: \"", f
);
1016 print_decl_identifier (f
, decl
, PRINT_DECL_UNIQUE_NAME
);
1018 fputs (INDIRECT_CALL_NAME
, f
);
1019 fputs ("\" label: \"", f
);
1022 print_decl_identifier (f
, decl
, PRINT_DECL_NAME
);
1024 print_decl_identifier (f
, decl
, PRINT_DECL_ORIGIN
);
1027 fputs ("Indirect Call Placeholder", f
);
1030 /* Dump final cgraph edge in VCG format. */
1033 dump_final_callee_vcg (FILE *f
, location_t location
, tree callee
)
1035 if ((!callee
|| DECL_EXTERNAL (callee
))
1036 && bitmap_set_bit (callgraph_info_external_printed
,
1037 callee
? DECL_UID (callee
) + 1 : 0))
1039 dump_final_node_vcg_start (f
, callee
);
1040 fputs ("\" shape : ellipse }\n", f
);
1043 fputs ("edge: { sourcename: \"", f
);
1044 print_decl_identifier (f
, current_function_decl
, PRINT_DECL_UNIQUE_NAME
);
1045 fputs ("\" targetname: \"", f
);
1047 print_decl_identifier (f
, callee
, PRINT_DECL_UNIQUE_NAME
);
1049 fputs (INDIRECT_CALL_NAME
, f
);
1050 if (LOCATION_LOCUS (location
) != UNKNOWN_LOCATION
)
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
);
1057 fputs ("\" }\n", f
);
1060 /* Dump final cgraph node in VCG format. */
1063 dump_final_node_vcg (FILE *f
)
1065 dump_final_node_vcg_start (f
, current_function_decl
);
1067 if (flag_stack_usage_info
1068 || (flag_callgraph_info
& CALLGRAPH_INFO_STACK_USAGE
))
1069 output_stack_usage_1 (f
);
1071 if (flag_callgraph_info
& CALLGRAPH_INFO_DYNAMIC_ALLOC
)
1073 fprintf (f
, "\\n%u dynamic objects", vec_safe_length (cfun
->su
->dallocs
));
1076 callinfo_dalloc
*cda
;
1077 FOR_EACH_VEC_SAFE_ELT (cfun
->su
->dallocs
, i
, cda
)
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
);
1084 vec_free (cfun
->su
->dallocs
);
1085 cfun
->su
->dallocs
= NULL
;
1088 fputs ("\" }\n", f
);
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
;
1098 /* Output stack usage and callgraph info, as requested. */
1100 output_stack_usage (void)
1102 if (flag_callgraph_info
)
1103 dump_final_node_vcg (callgraph_info_file
);
1105 output_stack_usage_1 (NULL
);
1108 /* Open an auxiliary output file. */
1110 open_auxiliary_file (const char *ext
)
1115 filename
= concat (aux_base_name
, ".", ext
, NULL
);
1116 file
= fopen (filename
, "w");
1118 fatal_error (input_location
, "cannot open %s for writing: %m", filename
);
1123 /* Alternative diagnostics callback for reentered ICE reporting. */
1126 internal_error_reentered (diagnostic_context
*, const char *, va_list *)
1128 /* Flush the dump file if emergency_dump_function itself caused an ICE. */
1133 /* Auxiliary callback for the diagnostics code. */
1136 internal_error_function (diagnostic_context
*, const char *, va_list *)
1138 global_dc
->internal_error
= internal_error_reentered
;
1140 emergency_dump_function ();
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]. */
1147 general_init (const char *argv0
, bool init_signals
)
1151 p
= argv0
+ strlen (argv0
);
1152 while (p
!= argv0
&& !IS_DIR_SEPARATOR (p
[-1]))
1156 xmalloc_set_program_name (progname
);
1160 /* Unlock the stdio streams. */
1161 unlock_std_streams ();
1163 gcc_init_libintl ();
1165 identifier_to_locale_alloc
= alloc_for_identifier_to_locale
;
1166 identifier_to_locale_free
= ggc_free
;
1168 /* Initialize the diagnostics reporting machinery, so option parsing
1169 can give warnings and errors. */
1170 diagnostic_initialize (global_dc
, N_OPTS
);
1171 global_dc
->lang_mask
= lang_hooks
.option_lang_mask ();
1172 /* Set a default printer. Language specific initializations will
1173 override it later. */
1174 tree_diagnostics_defaults (global_dc
);
1176 global_dc
->show_caret
1177 = global_options_init
.x_flag_diagnostics_show_caret
;
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
;
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
;
1188 global_dc
->show_option_requested
1189 = global_options_init
.x_flag_diagnostics_show_option
;
1190 global_dc
->min_margin_width
1191 = global_options_init
.x_diagnostics_minimum_margin_width
;
1192 global_dc
->show_column
1193 = global_options_init
.x_flag_show_column
;
1194 global_dc
->internal_error
= internal_error_function
;
1195 global_dc
->option_enabled
= option_enabled
;
1196 global_dc
->option_state
= &global_options
;
1197 global_dc
->option_name
= option_name
;
1198 global_dc
->get_option_url
= get_option_url
;
1202 /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
1204 signal (SIGSEGV
, crash_signal
);
1207 signal (SIGILL
, crash_signal
);
1210 signal (SIGBUS
, crash_signal
);
1213 signal (SIGABRT
, crash_signal
);
1215 #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT)
1216 signal (SIGIOT
, crash_signal
);
1219 signal (SIGFPE
, crash_signal
);
1222 /* Other host-specific signal setup. */
1223 (*host_hooks
.extra_signals
)();
1226 /* Initialize the garbage-collector, string pools and tree type hash
1230 input_location
= UNKNOWN_LOCATION
;
1231 line_table
= ggc_alloc
<line_maps
> ();
1232 linemap_init (line_table
, BUILTINS_LOCATION
);
1233 line_table
->reallocator
= realloc_for_line_map
;
1234 line_table
->round_alloc_size
= ggc_round_alloc_size
;
1235 line_table
->default_range_bits
= 5;
1238 /* Initialize register usage now so switches may override. */
1241 /* Create the singleton holder for global state. This creates the
1243 g
= new gcc::context ();
1245 /* Allow languages and middle-end to register their dumps before the
1246 optimization passes. */
1247 g
->get_dumps ()->register_dumps ();
1249 /* Create the passes. */
1250 g
->set_passes (new gcc::pass_manager (g
));
1252 symtab
= new (ggc_alloc
<symbol_table
> ()) symbol_table ();
1254 statistics_early_init ();
1255 debuginfo_early_init ();
1258 /* Return true if the current target supports -fsection-anchors. */
1261 target_supports_section_anchors_p (void)
1263 if (targetm
.min_anchor_offset
== 0 && targetm
.max_anchor_offset
== 0)
1266 if (targetm
.asm_out
.output_anchor
== NULL
)
1272 /* Parse "N[:M][:...]" into struct align_flags A.
1273 VALUES contains parsed values (in reverse order), all processed
1274 values are popped. */
1277 read_log_maxskip (auto_vec
<unsigned> &values
, align_flags_tuple
*a
)
1279 unsigned n
= values
.pop ();
1281 a
->log
= floor_log2 (n
* 2 - 1);
1283 if (values
.is_empty ())
1284 a
->maxskip
= n
? n
- 1 : 0;
1287 unsigned m
= values
.pop ();
1288 /* -falign-foo=N:M means M-1 max bytes of padding, not M. */
1294 /* Normalize the tuple. */
1298 /* Parse "N[:M[:N2[:M2]]]" string FLAG into a pair of struct align_flags. */
1301 parse_N_M (const char *flag
, align_flags
&a
)
1305 static hash_map
<nofree_string_hash
, align_flags
> cache
;
1306 align_flags
*entry
= cache
.get (flag
);
1313 auto_vec
<unsigned> result_values
;
1314 bool r
= parse_and_check_align_values (flag
, NULL
, result_values
, false,
1319 /* Reverse values for easier manipulation. */
1320 result_values
.reverse ();
1322 read_log_maxskip (result_values
, &a
.levels
[0]);
1323 if (!result_values
.is_empty ())
1324 read_log_maxskip (result_values
, &a
.levels
[1]);
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:
1334 Now this behavior (and more) can be explicitly requested:
1335 -falign-functions=16:10:8
1336 Retain old behavior if N2 is missing: */
1338 int align
= 1 << a
.levels
[0].log
;
1339 int subalign
= 1 << SUBALIGN_LOG
;
1341 if (a
.levels
[0].log
> SUBALIGN_LOG
1342 && a
.levels
[0].maxskip
>= subalign
- 1)
1344 /* Set N2 unless subalign can never have any effect. */
1345 if (align
> a
.levels
[0].maxskip
+ 1)
1347 a
.levels
[1].log
= SUBALIGN_LOG
;
1348 a
.levels
[1].normalize ();
1354 /* Cache seen value. */
1355 cache
.put (flag
, a
);
1359 /* Process -falign-foo=N[:M[:N2[:M2]]] options. */
1362 parse_alignment_opts (void)
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
);
1370 /* Process the options that have been parsed. */
1372 process_options (void)
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
;
1378 maximum_field_alignment
= initial_max_fld_align
* BITS_PER_UNIT
;
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
);
1386 /* Some machines may reject certain combinations of options. */
1387 location_t saved_location
= input_location
;
1388 input_location
= UNKNOWN_LOCATION
;
1389 targetm
.target_option
.override ();
1390 input_location
= saved_location
;
1392 if (flag_diagnostics_generate_patch
)
1393 global_dc
->edit_context_ptr
= new edit_context ();
1395 /* Avoid any informative notes in the second run of -fcompare-debug. */
1396 if (flag_compare_debug
)
1397 diagnostic_inhibit_notes (global_dc
);
1399 if (flag_section_anchors
&& !target_supports_section_anchors_p ())
1401 warning_at (UNKNOWN_LOCATION
, OPT_fsection_anchors
,
1402 "this target does not support %qs",
1403 "-fsection-anchors");
1404 flag_section_anchors
= 0;
1407 if (flag_short_enums
== 2)
1408 flag_short_enums
= targetm
.default_short_enums ();
1410 /* Set aux_base_name if not already set. */
1413 else if (dump_base_name
)
1415 const char *name
= dump_base_name
;
1418 if (dump_base_ext
&& (len
= strlen (dump_base_ext
))
1419 && (nlen
= strlen (name
)) && nlen
> len
1420 && strcmp (name
+ nlen
- len
, dump_base_ext
) == 0)
1422 char *p
= xstrndup (name
, nlen
- len
);
1426 aux_base_name
= name
;
1429 aux_base_name
= "gccaux";
1433 || flag_loop_nest_optimize
1434 || flag_graphite_identity
1435 || flag_loop_parallelize_all
)
1436 sorry ("Graphite loop optimizations cannot be used (isl is not available) "
1437 "(%<-fgraphite%>, %<-fgraphite-identity%>, "
1438 "%<-floop-nest-optimize%>, %<-floop-parallelize-all%>)");
1441 if (flag_cf_protection
!= CF_NONE
1442 && !(flag_cf_protection
& CF_SET
))
1444 if (flag_cf_protection
== CF_FULL
)
1446 error_at (UNKNOWN_LOCATION
,
1447 "%<-fcf-protection=full%> is not supported for this "
1449 flag_cf_protection
= CF_NONE
;
1451 if (flag_cf_protection
== CF_BRANCH
)
1453 error_at (UNKNOWN_LOCATION
,
1454 "%<-fcf-protection=branch%> is not supported for this "
1456 flag_cf_protection
= CF_NONE
;
1458 if (flag_cf_protection
== CF_RETURN
)
1460 error_at (UNKNOWN_LOCATION
,
1461 "%<-fcf-protection=return%> is not supported for this "
1463 flag_cf_protection
= CF_NONE
;
1467 /* One region RA really helps to decrease the code size. */
1468 if (flag_ira_region
== IRA_REGION_AUTODETECT
)
1470 = optimize_size
|| !optimize
? IRA_REGION_ONE
: IRA_REGION_MIXED
;
1472 if (!abi_version_at_least (2))
1474 /* -fabi-version=1 support was removed after GCC 4.9. */
1475 error_at (UNKNOWN_LOCATION
,
1476 "%<-fabi-version=1%> is no longer supported");
1477 flag_abi_version
= 2;
1480 /* Unrolling all loops implies that standard loop unrolling must also
1482 if (flag_unroll_all_loops
)
1483 flag_unroll_loops
= 1;
1485 /* web and rename-registers help when run after loop unrolling. */
1486 if (flag_web
== AUTODETECT_VALUE
)
1487 flag_web
= flag_unroll_loops
;
1489 if (flag_rename_registers
== AUTODETECT_VALUE
)
1490 flag_rename_registers
= flag_unroll_loops
;
1492 if (flag_non_call_exceptions
)
1493 flag_asynchronous_unwind_tables
= 1;
1494 if (flag_asynchronous_unwind_tables
)
1495 flag_unwind_tables
= 1;
1497 if (flag_value_profile_transformations
)
1498 flag_profile_values
= 1;
1500 /* Warn about options that are not supported on this machine. */
1501 #ifndef INSN_SCHEDULING
1502 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
1503 warning_at (UNKNOWN_LOCATION
, 0,
1504 "instruction scheduling not supported on this target machine");
1506 if (!DELAY_SLOTS
&& flag_delayed_branch
)
1507 warning_at (UNKNOWN_LOCATION
, 0,
1508 "this target machine does not have delayed branches");
1510 user_label_prefix
= USER_LABEL_PREFIX
;
1511 if (flag_leading_underscore
!= -1)
1513 /* If the default prefix is more complicated than "" or "_",
1514 issue a warning and ignore this option. */
1515 if (user_label_prefix
[0] == 0 ||
1516 (user_label_prefix
[0] == '_' && user_label_prefix
[1] == 0))
1518 user_label_prefix
= flag_leading_underscore
? "_" : "";
1521 warning_at (UNKNOWN_LOCATION
, 0,
1522 "%<-f%sleading-underscore%> not supported on this "
1523 "target machine", flag_leading_underscore
? "" : "no-");
1526 /* If we are in verbose mode, write out the version and maybe all the
1527 option flags in use. */
1530 print_version (stderr
, "", true);
1532 print_switch_values (print_to_stderr
);
1535 if (flag_syntax_only
)
1537 write_symbols
= NO_DEBUG
;
1543 if (debug_info_level
== DINFO_LEVEL_NONE
)
1545 debug_info_level
= DINFO_LEVEL_NORMAL
;
1547 if (write_symbols
== NO_DEBUG
)
1548 write_symbols
= PREFERRED_DEBUGGING_TYPE
;
1551 debug_info_level
= DINFO_LEVEL_NONE
;
1554 if (flag_dump_final_insns
&& !flag_syntax_only
&& !no_backend
)
1556 FILE *final_output
= fopen (flag_dump_final_insns
, "w");
1559 error_at (UNKNOWN_LOCATION
,
1560 "could not open final insn dump file %qs: %m",
1561 flag_dump_final_insns
);
1562 flag_dump_final_insns
= NULL
;
1564 else if (fclose (final_output
))
1566 error_at (UNKNOWN_LOCATION
,
1567 "could not close zeroed insn dump file %qs: %m",
1568 flag_dump_final_insns
);
1569 flag_dump_final_insns
= NULL
;
1573 /* A lot of code assumes write_symbols == NO_DEBUG if the debugging
1575 if (debug_info_level
== DINFO_LEVEL_NONE
)
1576 write_symbols
= NO_DEBUG
;
1578 if (write_symbols
== NO_DEBUG
)
1580 #if defined(DBX_DEBUGGING_INFO)
1581 else if (write_symbols
== DBX_DEBUG
)
1582 debug_hooks
= &dbx_debug_hooks
;
1584 #if defined(XCOFF_DEBUGGING_INFO)
1585 else if (write_symbols
== XCOFF_DEBUG
)
1586 debug_hooks
= &xcoff_debug_hooks
;
1588 #ifdef DWARF2_DEBUGGING_INFO
1589 else if (write_symbols
== DWARF2_DEBUG
)
1590 debug_hooks
= &dwarf2_debug_hooks
;
1592 #ifdef VMS_DEBUGGING_INFO
1593 else if (write_symbols
== VMS_DEBUG
|| write_symbols
== VMS_AND_DWARF2_DEBUG
)
1594 debug_hooks
= &vmsdbg_debug_hooks
;
1596 #ifdef DWARF2_LINENO_DEBUGGING_INFO
1597 else if (write_symbols
== DWARF2_DEBUG
)
1598 debug_hooks
= &dwarf2_lineno_debug_hooks
;
1601 error_at (UNKNOWN_LOCATION
,
1602 "target system does not support the %qs debug format",
1603 debug_type_names
[write_symbols
]);
1605 /* We know which debug output will be used so we can set flag_var_tracking
1606 and flag_var_tracking_uninit if the user has not specified them. */
1607 if (debug_info_level
< DINFO_LEVEL_NORMAL
1608 || debug_hooks
->var_location
== do_nothing_debug_hooks
.var_location
)
1610 if (flag_var_tracking
== 1
1611 || flag_var_tracking_uninit
== 1)
1613 if (debug_info_level
< DINFO_LEVEL_NORMAL
)
1614 warning_at (UNKNOWN_LOCATION
, 0,
1615 "variable tracking requested, but useless unless "
1616 "producing debug info");
1618 warning_at (UNKNOWN_LOCATION
, 0,
1619 "variable tracking requested, but not supported "
1620 "by this debug format");
1622 flag_var_tracking
= 0;
1623 flag_var_tracking_uninit
= 0;
1626 /* The debug hooks are used to implement -fdump-go-spec because it
1627 gives a simple and stable API for all the information we need to
1629 if (flag_dump_go_spec
!= NULL
)
1630 debug_hooks
= dump_go_spec_init (flag_dump_go_spec
, debug_hooks
);
1632 /* If the user specifically requested variable tracking with tagging
1633 uninitialized variables, we need to turn on variable tracking.
1634 (We already determined above that variable tracking is feasible.) */
1635 if (flag_var_tracking_uninit
== 1)
1636 flag_var_tracking
= 1;
1638 if (flag_var_tracking
== AUTODETECT_VALUE
)
1639 flag_var_tracking
= optimize
>= 1;
1641 if (flag_var_tracking_uninit
== AUTODETECT_VALUE
)
1642 flag_var_tracking_uninit
= flag_var_tracking
;
1644 if (flag_var_tracking_assignments
== AUTODETECT_VALUE
)
1645 flag_var_tracking_assignments
1646 = (flag_var_tracking
1647 && !(flag_selective_scheduling
|| flag_selective_scheduling2
));
1649 if (flag_var_tracking_assignments_toggle
)
1650 flag_var_tracking_assignments
= !flag_var_tracking_assignments
;
1652 if (flag_var_tracking_assignments
&& !flag_var_tracking
)
1653 flag_var_tracking
= flag_var_tracking_assignments
= -1;
1655 if (flag_var_tracking_assignments
1656 && (flag_selective_scheduling
|| flag_selective_scheduling2
))
1657 warning_at (UNKNOWN_LOCATION
, 0,
1658 "var-tracking-assignments changes selective scheduling");
1660 if (debug_nonbind_markers_p
== AUTODETECT_VALUE
)
1661 debug_nonbind_markers_p
1663 && debug_info_level
>= DINFO_LEVEL_NORMAL
1664 && (write_symbols
== DWARF2_DEBUG
1665 || write_symbols
== VMS_AND_DWARF2_DEBUG
)
1666 && !(flag_selective_scheduling
|| flag_selective_scheduling2
));
1668 if (dwarf2out_as_loc_support
== AUTODETECT_VALUE
)
1669 dwarf2out_as_loc_support
1670 = dwarf2out_default_as_loc_support ();
1671 if (dwarf2out_as_locview_support
== AUTODETECT_VALUE
)
1672 dwarf2out_as_locview_support
1673 = dwarf2out_default_as_locview_support ();
1675 if (debug_variable_location_views
== AUTODETECT_VALUE
)
1677 debug_variable_location_views
1678 = (flag_var_tracking
1679 && debug_info_level
>= DINFO_LEVEL_NORMAL
1680 && (write_symbols
== DWARF2_DEBUG
1681 || write_symbols
== VMS_AND_DWARF2_DEBUG
)
1683 && dwarf2out_as_loc_support
1684 && dwarf2out_as_locview_support
);
1686 else if (debug_variable_location_views
== -1 && dwarf_version
!= 5)
1688 warning_at (UNKNOWN_LOCATION
, 0,
1689 "without %<-gdwarf-5%>, "
1690 "%<-gvariable-location-views=incompat5%> "
1691 "is equivalent to %<-gvariable-location-views%>");
1692 debug_variable_location_views
= 1;
1695 if (debug_internal_reset_location_views
== 2)
1697 debug_internal_reset_location_views
1698 = (debug_variable_location_views
1699 && targetm
.reset_location_view
);
1701 else if (debug_internal_reset_location_views
1702 && !debug_variable_location_views
)
1704 warning_at (UNKNOWN_LOCATION
, 0,
1705 "%<-ginternal-reset-location-views%> is forced disabled "
1706 "without %<-gvariable-location-views%>");
1707 debug_internal_reset_location_views
= 0;
1710 if (debug_inline_points
== AUTODETECT_VALUE
)
1711 debug_inline_points
= debug_variable_location_views
;
1712 else if (debug_inline_points
&& !debug_nonbind_markers_p
)
1714 warning_at (UNKNOWN_LOCATION
, 0,
1715 "%<-ginline-points%> is forced disabled without "
1716 "%<-gstatement-frontiers%>");
1717 debug_inline_points
= 0;
1720 if (flag_tree_cselim
== AUTODETECT_VALUE
)
1722 if (HAVE_conditional_move
)
1723 flag_tree_cselim
= 1;
1725 flag_tree_cselim
= 0;
1728 /* If auxiliary info generation is desired, open the output file.
1729 This goes in the same directory as the source file--unlike
1730 all the other output files. */
1731 if (flag_gen_aux_info
)
1733 aux_info_file
= fopen (aux_info_file_name
, "w");
1734 if (aux_info_file
== 0)
1735 fatal_error (UNKNOWN_LOCATION
,
1736 "cannot open %s: %m", aux_info_file_name
);
1739 if (!targetm_common
.have_named_sections
)
1741 if (flag_function_sections
)
1743 warning_at (UNKNOWN_LOCATION
, 0,
1744 "%<-ffunction-sections%> not supported for this target");
1745 flag_function_sections
= 0;
1747 if (flag_data_sections
)
1749 warning_at (UNKNOWN_LOCATION
, 0,
1750 "%<-fdata-sections%> not supported for this target");
1751 flag_data_sections
= 0;
1755 if (flag_prefetch_loop_arrays
> 0 && !targetm
.code_for_prefetch
)
1757 warning_at (UNKNOWN_LOCATION
, 0,
1758 "%<-fprefetch-loop-arrays%> not supported for this target");
1759 flag_prefetch_loop_arrays
= 0;
1761 else if (flag_prefetch_loop_arrays
> 0 && !targetm
.have_prefetch ())
1763 warning_at (UNKNOWN_LOCATION
, 0,
1764 "%<-fprefetch-loop-arrays%> not supported for this target "
1765 "(try %<-march%> switches)");
1766 flag_prefetch_loop_arrays
= 0;
1769 /* This combination of options isn't handled for i386 targets and doesn't
1770 make much sense anyway, so don't allow it. */
1771 if (flag_prefetch_loop_arrays
> 0 && optimize_size
)
1773 warning_at (UNKNOWN_LOCATION
, 0,
1774 "%<-fprefetch-loop-arrays%> is not supported with %<-Os%>");
1775 flag_prefetch_loop_arrays
= 0;
1778 /* The presence of IEEE signaling NaNs, implies all math can trap. */
1779 if (flag_signaling_nans
)
1780 flag_trapping_math
= 1;
1782 /* We cannot reassociate if we want traps or signed zeros. */
1783 if (flag_associative_math
&& (flag_trapping_math
|| flag_signed_zeros
))
1785 warning_at (UNKNOWN_LOCATION
, 0,
1786 "%<-fassociative-math%> disabled; other options take "
1788 flag_associative_math
= 0;
1791 /* -fstack-clash-protection is not currently supported on targets
1792 where the stack grows up. */
1793 if (flag_stack_clash_protection
&& !STACK_GROWS_DOWNWARD
)
1795 warning_at (UNKNOWN_LOCATION
, 0,
1796 "%<-fstack-clash-protection%> is not supported on targets "
1797 "where the stack grows from lower to higher addresses");
1798 flag_stack_clash_protection
= 0;
1801 /* We cannot support -fstack-check= and -fstack-clash-protection at
1803 if (flag_stack_check
!= NO_STACK_CHECK
&& flag_stack_clash_protection
)
1805 warning_at (UNKNOWN_LOCATION
, 0,
1806 "%<-fstack-check=%> and %<-fstack-clash_protection%> are "
1807 "mutually exclusive; disabling %<-fstack-check=%>");
1808 flag_stack_check
= NO_STACK_CHECK
;
1811 /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */
1812 if (flag_cx_limited_range
)
1813 flag_complex_method
= 0;
1815 /* With -fcx-fortran-rules, we do something in-between cheap and C99. */
1816 if (flag_cx_fortran_rules
)
1817 flag_complex_method
= 1;
1819 /* Targets must be able to place spill slots at lower addresses. If the
1820 target already uses a soft frame pointer, the transition is trivial. */
1821 if (!FRAME_GROWS_DOWNWARD
&& flag_stack_protect
)
1823 warning_at (UNKNOWN_LOCATION
, 0,
1824 "%<-fstack-protector%> not supported for this target");
1825 flag_stack_protect
= 0;
1827 if (!flag_stack_protect
)
1828 warn_stack_protect
= 0;
1830 /* Address Sanitizer needs porting to each target architecture. */
1832 if ((flag_sanitize
& SANITIZE_ADDRESS
)
1833 && (!FRAME_GROWS_DOWNWARD
|| targetm
.asan_shadow_offset
== NULL
))
1835 warning_at (UNKNOWN_LOCATION
, 0,
1836 "%<-fsanitize=address%> and %<-fsanitize=kernel-address%> "
1837 "are not supported for this target");
1838 flag_sanitize
&= ~SANITIZE_ADDRESS
;
1841 /* Do not use IPA optimizations for register allocation if profiler is active
1842 or patchable function entries are inserted for run-time instrumentation
1843 or port does not emit prologue and epilogue as RTL. */
1844 if (profile_flag
|| function_entry_patch_area_size
1845 || !targetm
.have_prologue () || !targetm
.have_epilogue ())
1848 /* Enable -Werror=coverage-mismatch when -Werror and -Wno-error
1849 have not been set. */
1850 if (!global_options_set
.x_warnings_are_errors
1851 && warn_coverage_mismatch
1852 && (global_dc
->classify_diagnostic
[OPT_Wcoverage_mismatch
] ==
1854 diagnostic_classify_diagnostic (global_dc
, OPT_Wcoverage_mismatch
,
1855 DK_ERROR
, UNKNOWN_LOCATION
);
1857 /* Save the current optimization options. */
1858 optimization_default_node
= build_optimization_node (&global_options
);
1859 optimization_current_node
= optimization_default_node
;
1861 if (flag_checking
>= 2)
1862 hash_table_sanitize_eq_limit
1863 = param_hash_table_verification_limit
;
1865 if (flag_large_source_files
)
1866 line_table
->default_range_bits
= 0;
1868 /* Please don't change global_options after this point, those changes won't
1869 be reflected in optimization_{default,current}_node. */
1872 /* This function can be called multiple times to reinitialize the compiler
1873 back end when register classes or instruction sets have changed,
1874 before each function. */
1876 backend_init_target (void)
1878 /* This depends on stack_pointer_rtx. */
1879 init_fake_stack_mems ();
1881 /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is
1883 init_alias_target ();
1885 /* Depends on HARD_FRAME_POINTER_REGNUM. */
1889 /* Depends on the enabled attribute. */
1892 /* The following initialization functions need to generate rtl, so
1893 provide a dummy function context for them. */
1894 init_dummy_function_start ();
1896 /* rtx_cost is mode-dependent, so cached values need to be recomputed
1897 on a mode change. */
1899 init_lower_subreg ();
1902 init_expr_target ();
1905 /* We may need to recompute regno_save_code[] and regno_restore_code[]
1906 after a mode change as well. */
1907 caller_save_initialized_p
= false;
1909 expand_dummy_function_end ();
1912 /* Initialize the compiler back end. This function is called only once,
1913 when starting the compiler. */
1920 init_inline_once ();
1921 init_varasm_once ();
1922 save_register_info ();
1924 /* Middle end needs this initialization for default mem attributes
1925 used by early calls to make_decl_rtl. */
1928 /* Middle end needs this initialization for mode tables used to assign
1929 modes to vector variables. */
1933 /* Initialize things that are both lang-dependent and target-dependent.
1934 This function can be called more than once if target parameters change. */
1936 lang_dependent_init_target (void)
1938 /* This creates various _DECL nodes, so needs to be called after the
1939 front end is initialized. It also depends on the HAVE_xxx macros
1940 generated from the target machine description. */
1943 gcc_assert (!this_target_rtl
->target_specific_initialized
);
1946 /* Perform initializations that are lang-dependent or target-dependent.
1947 but matters only for late optimizations and RTL generation. */
1949 static int rtl_initialized
;
1952 initialize_rtl (void)
1954 auto_timevar
tv (g_timer
, TV_INITIALIZE_RTL
);
1956 /* Initialization done just once per compilation, but delayed
1957 till code generation. */
1958 if (!rtl_initialized
)
1960 rtl_initialized
= true;
1962 /* Target specific RTL backend initialization. */
1963 if (!this_target_rtl
->target_specific_initialized
)
1965 backend_init_target ();
1966 this_target_rtl
->target_specific_initialized
= true;
1970 /* Language-dependent initialization. Returns nonzero on success. */
1972 lang_dependent_init (const char *name
)
1974 location_t save_loc
= input_location
;
1975 if (!dump_base_name
)
1977 dump_base_name
= name
&& name
[0] ? name
: "gccdump";
1979 /* We do not want to derive a non-empty dumpbase-ext from an
1980 explicit -dumpbase argument, only from a defaulted
1984 const char *base
= lbasename (dump_base_name
);
1985 const char *ext
= strrchr (base
, '.');
1987 dump_base_ext
= ext
;
1991 /* Other front-end initialization. */
1992 input_location
= BUILTINS_LOCATION
;
1993 if (lang_hooks
.init () == 0)
1995 input_location
= save_loc
;
1999 init_asm_output (name
);
2001 if (!flag_generate_lto
&& !flag_compare_debug
)
2003 /* If stack usage information is desired, open the output file. */
2004 if (flag_stack_usage
)
2005 stack_usage_file
= open_auxiliary_file ("su");
2007 /* If call graph information is desired, open the output file. */
2008 if (flag_callgraph_info
)
2010 callgraph_info_file
= open_auxiliary_file ("ci");
2011 /* Write the file header. */
2012 fprintf (callgraph_info_file
,
2013 "graph: { title: \"%s\"\n", main_input_filename
);
2014 bitmap_obstack_initialize (NULL
);
2015 callgraph_info_external_printed
= BITMAP_ALLOC (NULL
);
2019 flag_stack_usage
= flag_callgraph_info
= false;
2022 /* This creates various _DECL nodes, so needs to be called after the
2023 front end is initialized. */
2026 /* Do the target-specific parts of the initialization. */
2027 lang_dependent_init_target ();
2031 /* If dbx symbol table desired, initialize writing it and output the
2032 predefined types. */
2033 timevar_push (TV_SYMOUT
);
2035 /* Now we have the correct original filename, we can initialize
2037 (*debug_hooks
->init
) (name
);
2039 timevar_pop (TV_SYMOUT
);
2046 /* Reinitialize everything when target parameters, such as register usage,
2049 target_reinit (void)
2051 struct rtl_data saved_x_rtl
;
2052 rtx
*saved_regno_reg_rtx
;
2053 tree saved_optimization_current_node
;
2054 struct target_optabs
*saved_this_fn_optabs
;
2056 /* Temporarily switch to the default optimization node, so that
2057 *this_target_optabs is set to the default, not reflecting
2058 whatever a previous function used for the optimize
2060 saved_optimization_current_node
= optimization_current_node
;
2061 saved_this_fn_optabs
= this_fn_optabs
;
2062 if (saved_optimization_current_node
!= optimization_default_node
)
2064 optimization_current_node
= optimization_default_node
;
2065 cl_optimization_restore
2067 TREE_OPTIMIZATION (optimization_default_node
));
2069 this_fn_optabs
= this_target_optabs
;
2071 /* Save *crtl and regno_reg_rtx around the reinitialization
2072 to allow target_reinit being called even after prepare_function_start. */
2073 saved_regno_reg_rtx
= regno_reg_rtx
;
2074 if (saved_regno_reg_rtx
)
2076 saved_x_rtl
= *crtl
;
2077 memset (crtl
, '\0', sizeof (*crtl
));
2078 regno_reg_rtx
= NULL
;
2081 this_target_rtl
->target_specific_initialized
= false;
2083 /* This initializes hard_frame_pointer, and calls init_reg_modes_target()
2084 to initialize reg_raw_mode[]. */
2087 /* This invokes target hooks to set fixed_reg[] etc, which is
2091 /* Reinitialize lang-dependent parts. */
2092 lang_dependent_init_target ();
2094 /* Restore the original optimization node. */
2095 if (saved_optimization_current_node
!= optimization_default_node
)
2097 optimization_current_node
= saved_optimization_current_node
;
2098 cl_optimization_restore (&global_options
,
2099 TREE_OPTIMIZATION (optimization_current_node
));
2101 this_fn_optabs
= saved_this_fn_optabs
;
2103 /* Restore regno_reg_rtx at the end, as free_after_compilation from
2104 expand_dummy_function_end clears it. */
2105 if (saved_regno_reg_rtx
)
2107 *crtl
= saved_x_rtl
;
2108 regno_reg_rtx
= saved_regno_reg_rtx
;
2109 saved_regno_reg_rtx
= NULL
;
2114 dump_memory_report (const char *header
)
2116 /* Print significant header. */
2117 fputc ('\n', stderr
);
2118 for (unsigned i
= 0; i
< 80; i
++)
2119 fputc ('#', stderr
);
2120 fprintf (stderr
, "\n# %-77s#\n", header
);
2121 for (unsigned i
= 0; i
< 80; i
++)
2122 fputc ('#', stderr
);
2123 fputs ("\n\n", stderr
);
2125 dump_line_table_statistics ();
2126 ggc_print_statistics ();
2127 stringpool_statistics ();
2128 dump_tree_statistics ();
2129 dump_gimple_statistics ();
2130 dump_rtx_statistics ();
2131 dump_alloc_pool_statistics ();
2132 dump_bitmap_statistics ();
2133 dump_hash_table_loc_statistics ();
2134 dump_vec_loc_statistics ();
2135 dump_ggc_loc_statistics ();
2136 dump_alias_stats (stderr
);
2137 dump_pta_stats (stderr
);
2140 /* Clean up: close opened files, etc. */
2143 finalize (bool no_backend
)
2145 /* Close the dump files. */
2146 if (flag_gen_aux_info
)
2148 fclose (aux_info_file
);
2149 aux_info_file
= NULL
;
2151 unlink (aux_info_file_name
);
2154 /* Close non-debugging input and output files. Take special care to note
2155 whether fclose returns an error, since the pages might still be on the
2156 buffer chain while the file is open. */
2160 if (ferror (asm_out_file
) != 0)
2161 fatal_error (input_location
, "error writing to %s: %m", asm_file_name
);
2162 if (fclose (asm_out_file
) != 0)
2163 fatal_error (input_location
, "error closing %s: %m", asm_file_name
);
2164 asm_out_file
= NULL
;
2167 if (stack_usage_file
)
2169 fclose (stack_usage_file
);
2170 stack_usage_file
= NULL
;
2173 if (callgraph_info_file
)
2175 fputs ("}\n", callgraph_info_file
);
2176 fclose (callgraph_info_file
);
2177 callgraph_info_file
= NULL
;
2178 BITMAP_FREE (callgraph_info_external_printed
);
2179 bitmap_obstack_release (NULL
);
2183 coverage_remove_note_file ();
2190 g
->get_passes ()->finish_optimization_passes ();
2196 dump_memory_report ("Final");
2199 dump_profile_report ();
2201 /* Language-specific end of compilation actions. */
2202 lang_hooks
.finish ();
2206 standard_type_bitsize (int bitsize
)
2208 /* As a special exception, we always want __int128 enabled if possible. */
2211 if (bitsize
== CHAR_TYPE_SIZE
2212 || bitsize
== SHORT_TYPE_SIZE
2213 || bitsize
== INT_TYPE_SIZE
2214 || bitsize
== LONG_TYPE_SIZE
2215 || bitsize
== LONG_LONG_TYPE_SIZE
)
2220 /* Initialize the compiler, and compile the input file. */
2226 /* Don't do any more if an error has already occurred. */
2231 timevar_start (TV_PHASE_SETUP
);
2233 if (flag_save_optimization_record
)
2235 dump_context::get ().set_json_writer (new optrecord_json_writer ());
2238 /* This must be run always, because it is needed to compute the FP
2239 predefined macros, such as __LDBL_MAX__, for targets using non
2240 default FP formats. */
2241 init_adjust_machine_modes ();
2242 init_derived_machine_modes ();
2244 /* This must happen after the backend has a chance to process
2245 command line options, but before the parsers are
2247 for (i
= 0; i
< NUM_INT_N_ENTS
; i
++)
2248 if (targetm
.scalar_mode_supported_p (int_n_data
[i
].m
)
2249 && ! standard_type_bitsize (int_n_data
[i
].bitsize
))
2250 int_n_enabled_p
[i
] = true;
2252 int_n_enabled_p
[i
] = false;
2254 /* Initialize mpfrs exponent range. This is important to get
2255 underflow/overflow in a reasonable timeframe. */
2259 FOR_EACH_MODE_IN_CLASS (mode
, MODE_FLOAT
)
2260 if (SCALAR_FLOAT_MODE_P (mode
))
2262 const real_format
*fmt
= REAL_MODE_FORMAT (mode
);
2265 /* fmt->emin - fmt->p + 1 should be enough but the
2266 back-and-forth dance in real_to_decimal_for_mode we
2267 do for checking fails due to rounding effects then. */
2268 if ((fmt
->emin
- fmt
->p
) < min_exp
)
2269 min_exp
= fmt
->emin
- fmt
->p
;
2270 if (fmt
->emax
> max_exp
)
2271 max_exp
= fmt
->emax
;
2274 /* E.g. mpc_norm assumes it can square a number without bothering with
2275 with range scaling, so until that is fixed, double the minimum
2276 and maximum exponents, plus add some buffer for arithmetics
2277 on the squared numbers. */
2278 if (mpfr_set_emin (2 * (min_exp
- 1))
2279 || mpfr_set_emax (2 * (max_exp
+ 1)))
2280 sorry ("mpfr not configured to handle all floating modes");
2282 /* Set up the back-end if requested. */
2286 /* Language-dependent initialization. Returns true on success. */
2287 if (lang_dependent_init (main_input_filename
))
2289 /* Initialize yet another pass. */
2291 ggc_protect_identifiers
= true;
2293 symtab
->initialize ();
2294 init_final (main_input_filename
);
2295 coverage_init (aux_base_name
);
2298 invoke_plugin_callbacks (PLUGIN_START_UNIT
, NULL
);
2300 timevar_stop (TV_PHASE_SETUP
);
2306 timevar_stop (TV_PHASE_SETUP
);
2309 timevar_start (TV_PHASE_FINALIZE
);
2311 finalize (no_backend
);
2313 timevar_stop (TV_PHASE_FINALIZE
);
2317 toplev::toplev (timer
*external_timer
,
2319 : m_use_TV_TOTAL (external_timer
== NULL
),
2320 m_init_signals (init_signals
)
2323 g_timer
= external_timer
;
2328 if (g_timer
&& m_use_TV_TOTAL
)
2330 g_timer
->stop (TV_TOTAL
);
2331 g_timer
->print (stderr
);
2337 /* Potentially call timevar_init (which will create g_timevars if it
2338 doesn't already exist). */
2341 toplev::start_timevars ()
2343 if (time_report
|| !quiet_flag
|| flag_detailed_statistics
)
2346 timevar_start (TV_TOTAL
);
2349 /* Handle -fself-test. */
2352 toplev::run_self_tests ()
2356 error_at (UNKNOWN_LOCATION
, "self-tests incompatible with %<-E%>");
2360 /* Reset some state. */
2361 input_location
= UNKNOWN_LOCATION
;
2362 bitmap_obstack_initialize (NULL
);
2364 /* Run the tests; any failures will lead to an abort of the process.
2365 Use "make selftests-gdb" to run under the debugger. */
2366 ::selftest::run_tests ();
2369 bitmap_obstack_release (NULL
);
2371 inform (UNKNOWN_LOCATION
, "self-tests are not enabled in this build");
2372 #endif /* #if CHECKING_P */
2375 /* Entry point of cc1, cc1plus, jc1, f771, etc.
2376 Exit code is FATAL_EXIT_CODE if can't open files or if there were
2377 any errors, or SUCCESS_EXIT_CODE if compilation succeeded.
2379 It is not safe to call this function more than once. */
2382 toplev::main (int argc
, char **argv
)
2384 /* Parsing and gimplification sometimes need quite large stack.
2385 Increase stack size limits if possible. */
2386 stack_limit_increase (64 * 1024 * 1024);
2388 expandargv (&argc
, &argv
);
2390 /* Initialization of GCC's environment, and diagnostics. */
2391 general_init (argv
[0], m_init_signals
);
2393 /* One-off initialization of options that does not need to be
2394 repeated when options are added for particular functions. */
2395 init_options_once ();
2396 init_opts_obstack ();
2398 /* Initialize global options structures; this must be repeated for
2399 each structure used for parsing options. */
2400 init_options_struct (&global_options
, &global_options_set
);
2401 lang_hooks
.init_options_struct (&global_options
);
2403 /* Init GGC heuristics must be caller after we initialize
2405 init_ggc_heuristics ();
2407 /* Convert the options to an array. */
2408 decode_cmdline_options_to_array_default_mask (argc
,
2409 CONST_CAST2 (const char **,
2411 &save_decoded_options
,
2412 &save_decoded_options_count
);
2414 /* Perform language-specific options initialization. */
2415 lang_hooks
.init_options (save_decoded_options_count
, save_decoded_options
);
2417 /* Parse the options and do minimal processing; basically just
2418 enough to default flags appropriately. */
2419 decode_options (&global_options
, &global_options_set
,
2420 save_decoded_options
, save_decoded_options_count
,
2421 UNKNOWN_LOCATION
, global_dc
,
2422 targetm
.target_option
.override
);
2424 handle_common_deferred_options ();
2428 initialize_plugins ();
2431 print_version (stderr
, "", true);
2434 print_plugins_help (stderr
, "");
2436 /* Exit early if we can (e.g. -help). */
2437 if (!exit_after_options
)
2444 if (warningcount
|| errorcount
|| werrorcount
)
2445 print_ignored_options ();
2450 /* Invoke registered plugin callbacks if any. Some plugins could
2451 emit some diagnostics here. */
2452 invoke_plugin_callbacks (PLUGIN_FINISH
, NULL
);
2454 if (flag_diagnostics_generate_patch
)
2456 gcc_assert (global_dc
->edit_context_ptr
);
2459 pp_show_color (&pp
) = pp_show_color (global_dc
->printer
);
2460 global_dc
->edit_context_ptr
->print_diff (&pp
, true);
2464 diagnostic_finish (global_dc
);
2466 finalize_plugins ();
2468 after_memory_report
= true;
2470 if (seen_error () || werrorcount
)
2471 return (FATAL_EXIT_CODE
);
2473 return (SUCCESS_EXIT_CODE
);
2476 /* For those that want to, this function aims to clean up enough state that
2477 you can call toplev::main again. */
2479 toplev::finalize (void)
2481 rtl_initialized
= false;
2482 this_target_rtl
->target_specific_initialized
= false;
2484 /* Needs to be called before cgraph_c_finalize since it uses symtab. */
2485 ipa_reference_c_finalize ();
2486 ipa_fnsummary_c_finalize ();
2488 cgraph_c_finalize ();
2489 cgraphunit_c_finalize ();
2490 dwarf2out_c_finalize ();
2492 ipa_cp_c_finalize ();
2493 ira_costs_c_finalize ();
2495 /* save_decoded_options uses opts_obstack, so these must
2496 be cleaned up together. */
2497 obstack_free (&opts_obstack
, NULL
);
2498 XDELETEVEC (save_decoded_options
);
2499 save_decoded_options
= NULL
;
2500 save_decoded_options_count
= 0;
2502 /* Clean up the context (and pass_manager etc). */