1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* This is the top level of cc1/c++.
22 It parses command args, opens files, invokes the various passes
23 in the proper order, and counts the time used by each.
24 Error messages and low-level interface to malloc also handled here. */
27 #include <sys/types.h>
36 #include <sys/param.h>
37 /* This is for hpux. It is a real screw. They should change hpux. */
39 #include <sys/times.h>
40 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
41 #undef FFS /* Some systems define this in param.h. */
45 #include <sys/resource.h>
51 /* #include "c-tree.h" */
54 #include "insn-attr.h"
56 #ifdef XCOFF_DEBUGGING_INFO
61 /* The extra parameters substantially improve the I/O performance. */
63 VMS_fopen (fname
, type
)
67 if (strcmp (type
, "w") == 0)
68 return fopen (fname
, type
, "mbc=16", "deq=64", "fop=tef", "shr=nil");
69 return fopen (fname
, type
, "mbc=16");
71 #define fopen VMS_fopen
74 #ifndef DEFAULT_GDB_EXTENSIONS
75 #define DEFAULT_GDB_EXTENSIONS 1
78 extern int rtx_equal_function_value_matters
;
80 extern char **environ
;
81 extern char *version_string
, *language_string
;
83 extern void init_lex ();
84 extern void init_decl_processing ();
85 extern void init_obstacks ();
86 extern void init_tree_codes ();
87 extern void init_rtl ();
88 extern void init_optabs ();
89 extern void init_stmt ();
90 extern void init_reg_sets ();
91 extern void dump_flow_info ();
92 extern void dump_sched_info ();
93 extern void dump_local_alloc ();
95 void rest_of_decl_compilation ();
97 void error_with_file_and_line ();
102 void set_target_switch ();
103 static void print_switch_values ();
104 static char *decl_name ();
106 /* Name of program invoked, sans directories. */
110 /* Copy of arguments to main. */
114 /* Name of current original source file (what was input to cpp).
115 This comes from each #-command in the actual input. */
117 char *input_filename
;
119 /* Name of top-level original source file (what was input to cpp).
120 This comes from the #-command at the beginning of the actual input.
121 If there isn't any there, then this is the cc1 input file name. */
123 char *main_input_filename
;
125 /* Stream for reading from the input file. */
129 /* Current line number in real source file. */
133 /* Stack of currently pending input files. */
135 struct file_stack
*input_file_stack
;
137 /* Incremented on each change to input_file_stack. */
138 int input_file_stack_tick
;
140 /* FUNCTION_DECL for function now being parsed or compiled. */
142 extern tree current_function_decl
;
144 /* Name to use as base of names for dump output files. */
146 char *dump_base_name
;
148 /* Bit flags that specify the machine subtype we are compiling for.
149 Bits are tested using macros TARGET_... defined in the tm.h file
150 and set by `-m...' switches. Must be defined in rtlanal.c. */
152 extern int target_flags
;
154 /* Flags saying which kinds of debugging dump have been requested. */
157 int rtl_dump_and_exit
= 0;
158 int jump_opt_dump
= 0;
163 int combine_dump
= 0;
165 int local_reg_dump
= 0;
166 int global_reg_dump
= 0;
168 int jump2_opt_dump
= 0;
169 int dbr_sched_dump
= 0;
170 int flag_print_asm_name
= 0;
171 int stack_reg_dump
= 0;
173 /* Name for output file of assembly code, specified with -o. */
177 /* Value of the -G xx switch, and whether it was passed or not. */
181 /* Type(s) of debugging information we are producing (if any).
182 See flags.h for the definitions of the different possible
183 types of debugging information. */
184 enum debug_info_type write_symbols
= NO_DEBUG
;
186 /* Level of debugging information we are producing. See flags.h
187 for the definitions of the different possible levels. */
188 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
190 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
191 /* Nonzero means can use our own extensions to DBX format.
192 Relevant only when write_symbols == DBX_DEBUG or XCOFF_DEBUG. */
193 int use_gdb_dbx_extensions
= 0;
196 /* Nonzero means do optimizations. -O.
197 Particular numeric values stand for particular amounts of optimization;
198 thus, -O2 stores 2 here. However, the optimizations beyond the basic
199 ones are not controlled directly by this variable. Instead, they are
200 controlled by individual `flag_...' variables that are defaulted
201 based on this variable. */
205 /* Number of error messages and warning messages so far. */
208 int warningcount
= 0;
211 /* Pointer to function to compute the name to use to print a declaration. */
213 char *(*decl_printable_name
) ();
215 /* Pointer to function to compute rtl for a language-specific tree code. */
217 struct rtx_def
*(*lang_expand_expr
) ();
219 /* Nonzero if generating code to do profiling. */
221 int profile_flag
= 0;
223 /* Nonzero if generating code to do profiling on a line-by-line basis. */
225 int profile_block_flag
;
227 /* Nonzero for -pedantic switch: warn about anything
228 that standard spec forbids. */
232 /* Temporarily suppress certain warnings.
233 This is set while reading code from a system header file. */
235 int in_system_header
= 0;
237 /* Nonzero means do stupid register allocation.
238 Currently, this is 1 if `optimize' is 0. */
240 int obey_regdecls
= 0;
242 /* Don't print functions as they are compiled and don't print
243 times taken by the various passes. -quiet. */
249 /* Nonzero means `char' should be signed. */
251 int flag_signed_char
;
253 /* Nonzero means give an enum type only as many bytes as it needs. */
255 int flag_short_enums
;
257 /* Nonzero for -fcaller-saves: allocate values in regs that need to
258 be saved across function calls, if that produces overall better code.
259 Optional now, so people can test it. */
261 #ifdef DEFAULT_CALLER_SAVES
262 int flag_caller_saves
= 1;
264 int flag_caller_saves
= 0;
267 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
269 int flag_pcc_struct_return
= 0;
271 /* Nonzero for -fforce-mem: load memory value into a register
272 before arithmetic on it. This makes better cse but slower compilation. */
274 int flag_force_mem
= 0;
276 /* Nonzero for -fforce-addr: load memory address into a register before
277 reference to memory. This makes better cse but slower compilation. */
279 int flag_force_addr
= 0;
281 /* Nonzero for -fdefer-pop: don't pop args after each function call;
282 instead save them up to pop many calls' args with one insns. */
284 int flag_defer_pop
= 1;
286 /* Nonzero for -ffloat-store: don't allocate floats and doubles
287 in extended-precision registers. */
289 int flag_float_store
= 0;
291 /* Nonzero for -fcse-follow-jumps:
292 have cse follow jumps to do a more extensive job. */
294 int flag_cse_follow_jumps
;
296 /* Nonzero for -fexpensive-optimizations:
297 perform miscellaneous relatively-expensive optimizations. */
298 int flag_expensive_optimizations
;
300 /* Nonzero for -fthread-jumps:
301 have jump optimize output of loop. */
303 int flag_thread_jumps
;
305 /* Nonzero enables strength-reduction in loop.c. */
307 int flag_strength_reduce
= 0;
309 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
310 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
311 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
314 int flag_unroll_loops
;
316 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
317 This is generally not a win. */
319 int flag_unroll_all_loops
;
321 /* Nonzero for -fwritable-strings:
322 store string constants in data segment and don't uniquize them. */
324 int flag_writable_strings
= 0;
326 /* Nonzero means don't put addresses of constant functions in registers.
327 Used for compiling the Unix kernel, where strange substitutions are
328 done on the assembly output. */
330 int flag_no_function_cse
= 0;
332 /* Nonzero for -fomit-frame-pointer:
333 don't make a frame pointer in simple functions that don't require one. */
335 int flag_omit_frame_pointer
= 0;
337 /* Nonzero to inhibit use of define_optimization peephole opts. */
339 int flag_no_peephole
= 0;
341 /* Nonzero means all references through pointers are volatile. */
345 /* Nonzero means just do syntax checking; don't output anything. */
347 int flag_syntax_only
= 0;
349 /* Nonzero means to rerun cse after loop optimization. This increases
350 compilation time about 20% and picks up a few more common expressions. */
352 static int flag_rerun_cse_after_loop
;
354 /* Nonzero for -finline-functions: ok to inline functions that look like
355 good inline candidates. */
357 int flag_inline_functions
;
359 /* Nonzero for -fkeep-inline-functions: even if we make a function
360 go inline everywhere, keep its defintion around for debugging
363 int flag_keep_inline_functions
;
365 /* Nonzero means that functions declared `inline' will be treated
366 as `static'. Prevents generation of zillions of copies of unused
367 static inline functions; instead, `inlines' are written out
368 only when actually used. Used in conjunction with -g. Also
369 does the right thing with #pragma interface. */
373 /* Nonzero means we should be saving declaration info into a .X file. */
375 int flag_gen_aux_info
= 0;
377 /* Specified name of aux-info file. */
379 static char *aux_info_file_name
;
381 /* Nonzero means make the text shared if supported. */
383 int flag_shared_data
;
385 /* Nonzero means schedule into delayed branch slots if supported. */
387 int flag_delayed_branch
;
389 /* Nonzero if we are compiling pure (sharable) code.
390 Value is 1 if we are doing reasonable (i.e. simple
391 offset into offset table) pic. Value is 2 if we can
392 only perform register offsets. */
396 /* Nonzero means place uninitialized global data in the bss section. */
400 /* Nonzero means pretend it is OK to examine bits of target floats,
401 even if that isn't true. The resulting code will have incorrect constants,
402 but the same series of instructions that the native compiler would make. */
404 int flag_pretend_float
;
406 /* Nonzero means change certain warnings into errors.
407 Usually these are warnings about failure to conform to some standard. */
409 int flag_pedantic_errors
= 0;
411 /* flag_schedule_insns means schedule insns within basic blocks (before
413 flag_schedule_insns_after_reload means schedule insns after
416 int flag_schedule_insns
= 0;
417 int flag_schedule_insns_after_reload
= 0;
419 /* -finhibit-size-directive inhibits output of .size for ELF.
420 This is used only for compiling crtstuff.c,
421 and it may be extended to other effects
422 needed for crtstuff.c on other systems. */
423 int flag_inhibit_size_directive
= 0;
425 /* -fgnu-linker specifies use of the GNU linker for initializations.
426 -fno-gnu-linker says that collect will be used. */
427 int flag_gnu_linker
= 1;
429 /* Table of language-independent -f options.
430 STRING is the option name. VARIABLE is the address of the variable.
431 ON_VALUE is the value to store in VARIABLE
432 if `-fSTRING' is seen as an option.
433 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
435 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
437 {"float-store", &flag_float_store
, 1},
438 {"volatile", &flag_volatile
, 1},
439 {"defer-pop", &flag_defer_pop
, 1},
440 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
441 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
442 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
443 {"thread-jumps", &flag_thread_jumps
, 1},
444 {"strength-reduce", &flag_strength_reduce
, 1},
445 {"unroll-loops", &flag_unroll_loops
, 1},
446 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
447 {"writable-strings", &flag_writable_strings
, 1},
448 {"peephole", &flag_no_peephole
, 0},
449 {"force-mem", &flag_force_mem
, 1},
450 {"force-addr", &flag_force_addr
, 1},
451 {"function-cse", &flag_no_function_cse
, 0},
452 {"inline-functions", &flag_inline_functions
, 1},
453 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
454 {"inline", &flag_no_inline
, 0},
455 {"syntax-only", &flag_syntax_only
, 1},
456 {"shared-data", &flag_shared_data
, 1},
457 {"caller-saves", &flag_caller_saves
, 1},
458 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
459 {"delayed-branch", &flag_delayed_branch
, 1},
460 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
461 {"pretend-float", &flag_pretend_float
, 1},
462 {"schedule-insns", &flag_schedule_insns
, 1},
463 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
464 {"pic", &flag_pic
, 1},
465 {"PIC", &flag_pic
, 2},
466 {"common", &flag_no_common
, 0},
467 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
468 {"gnu-linker", &flag_gnu_linker
, 1}
471 /* Options controlling warnings */
473 /* Don't print warning messages. -w. */
475 int inhibit_warnings
= 0;
477 /* Print various extra warnings. -W. */
479 int extra_warnings
= 0;
481 /* Treat warnings as errors. -Werror. */
483 int warnings_are_errors
= 0;
485 /* Nonzero to warn about unused local variables. */
489 /* Nonzero to warn about variables used before they are initialized. */
491 int warn_uninitialized
;
493 /* Nonzero means warn about all declarations which shadow others. */
497 /* Warn if a switch on an enum fails to have a case for every enum value. */
501 /* Nonzero means warn about function definitions that default the return type
502 or that use a null return and have a return-type other than void. */
504 int warn_return_type
;
506 /* Nonzero means warn about pointer casts that increase the required
507 alignment of the target type (and might therefore lead to a crash
508 due to a misaligned access). */
512 /* Nonzero means warn about any identifiers that match in the first N
513 characters. The value N is in `id_clash_len'. */
518 /* Nonzero means warn if inline function is too large. */
522 /* Warn if a function returns an aggregate,
523 since there are often incompatible calling conventions for doing this. */
525 int warn_aggregate_return
;
527 /* Likewise for -W. */
529 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
531 {"unused", &warn_unused
, 1},
532 {"error", &warnings_are_errors
, 1},
533 {"shadow", &warn_shadow
, 1},
534 {"switch", &warn_switch
, 1},
535 {"return-type", &warn_return_type
, 1},
536 {"aggregate-return", &warn_aggregate_return
, 1},
537 {"cast-align", &warn_cast_align
, 1},
538 {"uninitialized", &warn_uninitialized
, 1},
539 {"inline", &warn_inline
, 1}
542 /* Output files for assembler code (real compiler output)
543 and debugging dumps. */
548 FILE *jump_opt_dump_file
;
550 FILE *loop_dump_file
;
551 FILE *cse2_dump_file
;
552 FILE *flow_dump_file
;
553 FILE *combine_dump_file
;
554 FILE *sched_dump_file
;
555 FILE *local_reg_dump_file
;
556 FILE *global_reg_dump_file
;
557 FILE *sched2_dump_file
;
558 FILE *jump2_opt_dump_file
;
559 FILE *dbr_sched_dump_file
;
560 FILE *stack_reg_dump_file
;
562 /* Time accumulators, to count the total time spent in various passes. */
566 int integration_time
;
574 int local_alloc_time
;
575 int global_alloc_time
;
578 int shorten_branch_time
;
584 /* Return time used so far, in microseconds. */
593 struct rusage rusage
;
598 int proc_system_time
;
600 int child_system_time
;
610 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
613 getrusage (0, &rusage
);
614 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
615 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
618 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
623 #define TIMEVAR(VAR, BODY) \
624 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
627 print_time (str
, total
)
632 "time in %s: %d.%06d\n",
633 str
, total
/ 1000000, total
% 1000000);
636 /* Count an error or warning. Return 1 if the message should be printed. */
639 count_error (warningp
)
642 if (warningp
&& inhibit_warnings
)
645 if (warningp
&& !warnings_are_errors
)
649 static int warning_message
= 0;
651 if (warningp
&& !warning_message
)
653 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
662 /* Print a fatal error message. NAME is the text.
663 Also include a system error message based on `errno'. */
666 pfatal_with_name (name
)
669 fprintf (stderr
, "%s: ", progname
);
675 fatal_io_error (name
)
678 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
691 /* Called to give a better error message when we don't have an insn to match
692 what we are looking for or if the insn's constraints aren't satisfied,
693 rather than just calling abort(). */
696 fatal_insn_not_found (insn
)
699 if (INSN_CODE (insn
) < 0)
700 error ("internal error--unrecognizable insn:", 0);
702 error ("internal error--insn does not satisfy its constraints:", 0);
705 fflush (asm_out_file
);
707 fflush (aux_info_file
);
709 fflush (rtl_dump_file
);
710 if (jump_opt_dump_file
)
711 fflush (jump_opt_dump_file
);
713 fflush (cse_dump_file
);
715 fflush (loop_dump_file
);
717 fflush (cse2_dump_file
);
719 fflush (flow_dump_file
);
720 if (combine_dump_file
)
721 fflush (combine_dump_file
);
723 fflush (sched_dump_file
);
724 if (local_reg_dump_file
)
725 fflush (local_reg_dump_file
);
726 if (global_reg_dump_file
)
727 fflush (global_reg_dump_file
);
728 if (sched2_dump_file
)
729 fflush (sched2_dump_file
);
730 if (jump2_opt_dump_file
)
731 fflush (jump2_opt_dump_file
);
732 if (dbr_sched_dump_file
)
733 fflush (dbr_sched_dump_file
);
734 if (stack_reg_dump_file
)
735 fflush (stack_reg_dump_file
);
739 /* This is the default decl_printable_name function. */
742 decl_name (decl
, kind
)
746 return IDENTIFIER_POINTER (DECL_NAME (decl
));
749 static int need_error_newline
;
751 /* Function of last error message;
752 more generally, function such that if next error message is in it
753 then we don't have to mention the function name. */
754 static tree last_error_function
= NULL
;
756 /* Used to detect when input_file_stack has changed since last described. */
757 static int last_error_tick
;
759 /* Called when the start of a function definition is parsed,
760 this function prints on stderr the name of the function. */
763 announce_function (decl
)
769 if (rtl_dump_and_exit
)
770 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
772 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, &junk
));
774 need_error_newline
= 1;
775 last_error_function
= current_function_decl
;
779 /* Prints out, if necessary, the name of the current function
780 which caused an error. Called from all error and warning functions. */
783 report_error_function (file
)
786 struct file_stack
*p
;
788 if (need_error_newline
)
790 fprintf (stderr
, "\n");
791 need_error_newline
= 0;
794 if (last_error_function
!= current_function_decl
)
796 char *kind
= "function";
797 if (current_function_decl
!= 0
798 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
802 fprintf (stderr
, "%s: ", file
);
804 if (current_function_decl
== NULL
)
805 fprintf (stderr
, "At top level:\n");
808 char *name
= (*decl_printable_name
) (current_function_decl
, &kind
);
809 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
812 last_error_function
= current_function_decl
;
814 if (input_file_stack
&& input_file_stack
->next
!= 0
815 && input_file_stack_tick
!= last_error_tick
)
817 fprintf (stderr
, "In file included");
818 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
820 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
822 fprintf (stderr
, ",");
824 fprintf (stderr
, ":\n");
825 last_error_tick
= input_file_stack_tick
;
829 /* Report an error at the current line number.
830 S and V are a string and an arg for `printf'. */
835 int v
; /* @@also used as pointer */
836 int v2
; /* @@also used as pointer */
838 error_with_file_and_line (input_filename
, lineno
, s
, v
, v2
);
841 /* Report an error at line LINE of file FILE.
842 S and V are a string and an arg for `printf'. */
845 error_with_file_and_line (file
, line
, s
, v
, v2
)
854 report_error_function (file
);
857 fprintf (stderr
, "%s:%d: ", file
, line
);
859 fprintf (stderr
, "%s: ", progname
);
860 fprintf (stderr
, s
, v
, v2
);
861 fprintf (stderr
, "\n");
864 /* Report an error at the declaration DECL.
865 S and V are a string and an arg which uses %s to substitute the declaration name. */
868 error_with_decl (decl
, s
, v
)
876 report_error_function (DECL_SOURCE_FILE (decl
));
878 fprintf (stderr
, "%s:%d: ",
879 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
881 if (DECL_NAME (decl
))
882 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
884 fprintf (stderr
, s
, "((anonymous))", v
);
885 fprintf (stderr
, "\n");
888 /* Report an error at the line number of the insn INSN.
889 S and V are a string and an arg for `printf'.
890 This is used only when INSN is an `asm' with operands,
891 and each ASM_OPERANDS records its own source file and line. */
894 error_for_asm (insn
, s
, v
, v2
)
897 int v
; /* @@also used as pointer */
898 int v2
; /* @@also used as pointer */
902 rtx body
= PATTERN (insn
);
905 /* Find the (or one of the) ASM_OPERANDS in the insn. */
906 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
907 asmop
= SET_SRC (body
);
908 else if (GET_CODE (body
) == ASM_OPERANDS
)
910 else if (GET_CODE (body
) == PARALLEL
911 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
912 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
913 else if (GET_CODE (body
) == PARALLEL
914 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
915 asmop
= XVECEXP (body
, 0, 0);
917 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
918 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
920 error_with_file_and_line (filename
, line
, s
, v
, v2
);
923 /* Report a warning at line LINE.
924 S and V are a string and an arg for `printf'. */
927 warning_with_file_and_line (file
, line
, s
, v
, v2
, v3
)
935 if (count_error (1) == 0)
938 report_error_function (file
);
941 fprintf (stderr
, "%s:%d: ", file
, line
);
943 fprintf (stderr
, "%s: ", progname
);
945 fprintf (stderr
, "warning: ");
946 fprintf (stderr
, s
, v
, v2
, v3
);
947 fprintf (stderr
, "\n");
950 /* Report a warning at the current line number.
951 S and V are a string and an arg for `printf'. */
954 warning (s
, v
, v2
, v3
)
956 int v
; /* @@also used as pointer */
960 warning_with_file_and_line (input_filename
, lineno
, s
, v
, v2
, v3
);
963 /* Report a warning at the declaration DECL.
964 S is string which uses %s to substitute the declaration name.
965 V is a second parameter that S can refer to. */
968 warning_with_decl (decl
, s
, v
)
975 if (count_error (1) == 0)
978 report_error_function (DECL_SOURCE_FILE (decl
));
980 fprintf (stderr
, "%s:%d: ",
981 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
983 fprintf (stderr
, "warning: ");
984 if (DECL_NAME (decl
))
985 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
987 fprintf (stderr
, s
, "((anonymous))", v
);
988 fprintf (stderr
, "\n");
991 /* Report a warning at the line number of the insn INSN.
992 S and V are a string and an arg for `printf'.
993 This is used only when INSN is an `asm' with operands,
994 and each ASM_OPERANDS records its own source file and line. */
997 warning_for_asm (insn
, s
, v
, v2
)
1000 int v
; /* @@also used as pointer */
1001 int v2
; /* @@also used as pointer */
1005 rtx body
= PATTERN (insn
);
1008 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1009 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1010 asmop
= SET_SRC (body
);
1011 else if (GET_CODE (body
) == ASM_OPERANDS
)
1013 else if (GET_CODE (body
) == PARALLEL
1014 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1015 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1016 else if (GET_CODE (body
) == PARALLEL
1017 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1018 asmop
= XVECEXP (body
, 0, 0);
1020 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1021 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1023 warning_with_file_and_line (filename
, line
, s
, v
, v2
);
1026 /* These functions issue either warnings or errors depending on
1027 -pedantic-errors. */
1032 int v
; /* @@also used as pointer */
1035 if (flag_pedantic_errors
)
1042 pedwarn_with_decl (decl
, s
, v
)
1047 if (flag_pedantic_errors
)
1048 error_with_decl (decl
, s
, v
);
1050 warning_with_decl (decl
, s
, v
);
1054 pedwarn_with_file_and_line (file
, line
, s
, v
, v2
)
1061 if (flag_pedantic_errors
)
1062 error_with_file_and_line (file
, line
, s
, v
, v2
);
1064 warning_with_file_and_line (file
, line
, s
, v
, v2
);
1067 /* Apologize for not implementing some feature.
1068 S, V, and V2 are a string and args for `printf'. */
1077 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1079 fprintf (stderr
, "%s: ", progname
);
1081 fprintf (stderr
, "sorry, not implemented: ");
1082 fprintf (stderr
, s
, v
, v2
);
1083 fprintf (stderr
, "\n");
1086 /* Apologize for not implementing some feature, then quit.
1087 S, V, and V2 are a string and args for `printf'. */
1090 really_sorry (s
, v
, v2
)
1095 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1097 fprintf (stderr
, "c++: ");
1099 fprintf (stderr
, "sorry, not implemented: ");
1100 fprintf (stderr
, s
, v
, v2
);
1101 fatal (" (fatal)\n");
1104 /* More 'friendly' abort that prints the line and file.
1105 config.h can #define abort fancy_abort if you like that sort of thing.
1107 I don't think this is actually a good idea.
1108 Other sorts of crashes will look a certain way.
1109 It is a good thing if crashes from calling abort look the same way.
1115 fatal ("internal gcc abort");
1118 /* This calls abort and is used to avoid problems when abort if a macro.
1119 It is used when we need to pass the address of abort. */
1127 /* When `malloc.c' is compiled with `rcheck' defined,
1128 it calls this function to report clobberage. */
1136 /* Same as `malloc' but report error if no memory available. */
1142 register int value
= (int) malloc (size
);
1144 fatal ("virtual memory exhausted");
1148 /* Same as `realloc' but report error if no memory available. */
1151 xrealloc (ptr
, size
)
1155 int result
= realloc (ptr
, size
);
1157 fatal ("virtual memory exhausted");
1161 /* Return the logarithm of X, base 2, considering X unsigned,
1162 if X is a power of 2. Otherwise, returns -1. */
1166 register unsigned int x
;
1168 register int log
= 0;
1169 /* Test for 0 or a power of 2. */
1170 if (x
== 0 || x
!= (x
& -x
))
1172 while ((x
>>= 1) != 0)
1177 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1178 If X is 0, return -1. */
1182 register unsigned int x
;
1184 register int log
= -1;
1192 jmp_buf float_handler
;
1194 /* Specify where to longjmp to when a floating arithmetic error happens.
1195 If HANDLER is 0, it means don't handle the errors any more. */
1198 set_float_handler (handler
)
1201 float_handled
= (handler
!= 0);
1203 bcopy (handler
, float_handler
, sizeof (float_handler
));
1206 /* Signals actually come here. */
1209 float_signal (signo
)
1210 /* If this is missing, some compilers complain. */
1213 if (float_handled
== 0)
1215 #if defined (USG) || defined (hpux)
1216 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1219 signal (SIGFPE
, float_signal
);
1220 longjmp (float_handler
, 1);
1223 /* Handler for SIGPIPE. */
1227 /* If this is missing, some compilers complain. */
1230 fatal ("output pipe has been closed");
1233 /* Strip off a legitimate source ending from the input string NAME of
1237 strip_off_ending (name
, len
)
1241 if (len
> 2 && ! strcmp (".c", name
+ len
- 2))
1243 else if (len
> 2 && ! strcmp (".m", name
+ len
- 2))
1245 else if (len
> 2 && ! strcmp (".i", name
+ len
- 2))
1247 else if (len
> 3 && ! strcmp (".ii", name
+ len
- 3))
1249 else if (len
> 3 && ! strcmp (".co", name
+ len
- 3))
1251 else if (len
> 3 && ! strcmp (".cc", name
+ len
- 3))
1253 else if (len
> 2 && ! strcmp (".f", name
+ len
- 2))
1255 else if (len
> 4 && ! strcmp (".ada", name
+ len
- 4))
1259 /* Output a file name in the form wanted by System V. */
1262 output_file_directive (asm_file
, input_name
)
1266 int len
= strlen (input_name
);
1267 char *na
= input_name
+ len
;
1269 /* NA gets INPUT_NAME sans directory names. */
1270 while (na
> input_name
)
1277 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1278 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
1280 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1281 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
1283 fprintf (asm_file
, "\t.file\t\"%s\"\n", na
);
1288 /* Compile an entire file of output from cpp, named NAME.
1289 Write a file of assembly output and various debugging dumps. */
1297 int dump_base_name_length
;
1299 int name_specified
= name
!= 0;
1301 if (dump_base_name
== 0)
1302 dump_base_name
= name
? name
: "gccdump";
1303 dump_base_name_length
= strlen (dump_base_name
);
1307 integration_time
= 0;
1315 local_alloc_time
= 0;
1316 global_alloc_time
= 0;
1319 shorten_branch_time
= 0;
1325 /* Open input file. */
1327 if (name
== 0 || !strcmp (name
, "-"))
1333 finput
= fopen (name
, "r");
1335 pfatal_with_name (name
);
1337 /* Initialize data in various passes. */
1343 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
1344 || debug_info_level
== DINFO_LEVEL_VERBOSE
);
1345 init_decl_processing ();
1352 if (flag_caller_saves
)
1353 init_caller_save ();
1355 /* If auxiliary info generation is desired, open the output file.
1356 This goes in the same directory as the source file--unlike
1357 all the other output files. */
1358 if (flag_gen_aux_info
)
1360 aux_info_file
= fopen (aux_info_file_name
, "w");
1361 if (aux_info_file
== 0)
1362 pfatal_with_name (aux_info_file_name
);
1365 /* If rtl dump desired, open the output file. */
1368 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1369 strcpy (dumpname
, dump_base_name
);
1370 strcat (dumpname
, ".rtl");
1371 rtl_dump_file
= fopen (dumpname
, "w");
1372 if (rtl_dump_file
== 0)
1373 pfatal_with_name (dumpname
);
1376 /* If jump_opt dump desired, open the output file. */
1379 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1380 strcpy (dumpname
, dump_base_name
);
1381 strcat (dumpname
, ".jump");
1382 jump_opt_dump_file
= fopen (dumpname
, "w");
1383 if (jump_opt_dump_file
== 0)
1384 pfatal_with_name (dumpname
);
1387 /* If cse dump desired, open the output file. */
1390 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1391 strcpy (dumpname
, dump_base_name
);
1392 strcat (dumpname
, ".cse");
1393 cse_dump_file
= fopen (dumpname
, "w");
1394 if (cse_dump_file
== 0)
1395 pfatal_with_name (dumpname
);
1398 /* If loop dump desired, open the output file. */
1401 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1402 strcpy (dumpname
, dump_base_name
);
1403 strcat (dumpname
, ".loop");
1404 loop_dump_file
= fopen (dumpname
, "w");
1405 if (loop_dump_file
== 0)
1406 pfatal_with_name (dumpname
);
1409 /* If cse2 dump desired, open the output file. */
1412 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1413 strcpy (dumpname
, dump_base_name
);
1414 strcat (dumpname
, ".cse2");
1415 cse2_dump_file
= fopen (dumpname
, "w");
1416 if (cse2_dump_file
== 0)
1417 pfatal_with_name (dumpname
);
1420 /* If flow dump desired, open the output file. */
1423 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1424 strcpy (dumpname
, dump_base_name
);
1425 strcat (dumpname
, ".flow");
1426 flow_dump_file
= fopen (dumpname
, "w");
1427 if (flow_dump_file
== 0)
1428 pfatal_with_name (dumpname
);
1431 /* If combine dump desired, open the output file. */
1434 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1435 strcpy (dumpname
, dump_base_name
);
1436 strcat (dumpname
, ".combine");
1437 combine_dump_file
= fopen (dumpname
, "w");
1438 if (combine_dump_file
== 0)
1439 pfatal_with_name (dumpname
);
1442 /* If scheduling dump desired, open the output file. */
1445 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1446 strcpy (dumpname
, dump_base_name
);
1447 strcat (dumpname
, ".sched");
1448 sched_dump_file
= fopen (dumpname
, "w");
1449 if (sched_dump_file
== 0)
1450 pfatal_with_name (dumpname
);
1453 /* If local_reg dump desired, open the output file. */
1456 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1457 strcpy (dumpname
, dump_base_name
);
1458 strcat (dumpname
, ".lreg");
1459 local_reg_dump_file
= fopen (dumpname
, "w");
1460 if (local_reg_dump_file
== 0)
1461 pfatal_with_name (dumpname
);
1464 /* If global_reg dump desired, open the output file. */
1465 if (global_reg_dump
)
1467 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1468 strcpy (dumpname
, dump_base_name
);
1469 strcat (dumpname
, ".greg");
1470 global_reg_dump_file
= fopen (dumpname
, "w");
1471 if (global_reg_dump_file
== 0)
1472 pfatal_with_name (dumpname
);
1475 /* If 2nd scheduling dump desired, open the output file. */
1478 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 8);
1479 strcpy (dumpname
, dump_base_name
);
1480 strcat (dumpname
, ".sched2");
1481 sched2_dump_file
= fopen (dumpname
, "w");
1482 if (sched2_dump_file
== 0)
1483 pfatal_with_name (dumpname
);
1486 /* If jump2_opt dump desired, open the output file. */
1489 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1490 strcpy (dumpname
, dump_base_name
);
1491 strcat (dumpname
, ".jump2");
1492 jump2_opt_dump_file
= fopen (dumpname
, "w");
1493 if (jump2_opt_dump_file
== 0)
1494 pfatal_with_name (dumpname
);
1497 /* If dbr_sched dump desired, open the output file. */
1500 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1501 strcpy (dumpname
, dump_base_name
);
1502 strcat (dumpname
, ".dbr");
1503 dbr_sched_dump_file
= fopen (dumpname
, "w");
1504 if (dbr_sched_dump_file
== 0)
1505 pfatal_with_name (dumpname
);
1510 /* If stack_reg dump desired, open the output file. */
1513 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1514 strcpy (dumpname
, dump_base_name
);
1515 strcat (dumpname
, ".stack");
1516 stack_reg_dump_file
= fopen (dumpname
, "w");
1517 if (stack_reg_dump_file
== 0)
1518 pfatal_with_name (dumpname
);
1523 /* Open assembler code output file. */
1525 if (! name_specified
&& asm_file_name
== 0)
1526 asm_out_file
= stdout
;
1529 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1530 int len
= strlen (dump_base_name
);
1531 strcpy (dumpname
, dump_base_name
);
1532 strip_off_ending (dumpname
, len
);
1533 strcat (dumpname
, ".s");
1534 if (asm_file_name
== 0)
1536 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
1537 strcpy (asm_file_name
, dumpname
);
1539 if (!strcmp (asm_file_name
, "-"))
1540 asm_out_file
= stdout
;
1542 asm_out_file
= fopen (asm_file_name
, "w");
1543 if (asm_out_file
== 0)
1544 pfatal_with_name (asm_file_name
);
1547 #ifdef IO_BUFFER_SIZE
1548 setvbuf (asm_out_file
, xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
1551 input_filename
= name
;
1553 /* Perform language-specific initialization.
1554 This may set main_input_filename. */
1557 /* If the input doesn't start with a #line, use the input name
1558 as the official input file name. */
1559 if (main_input_filename
== 0)
1560 main_input_filename
= name
;
1562 /* Put an entry on the input file stack for the main input file. */
1564 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
1565 input_file_stack
->next
= 0;
1566 input_file_stack
->name
= input_filename
;
1568 ASM_FILE_START (asm_out_file
);
1570 /* Output something to inform GDB that this compilation was by GCC. */
1571 #ifndef ASM_IDENTIFY_GCC
1572 fprintf (asm_out_file
, "gcc2_compiled.:\n");
1574 ASM_IDENTIFY_GCC (asm_out_file
);
1576 /* Don't let the first function fall at the same address
1577 as gcc_compiled., if profiling. */
1578 if (profile_flag
|| profile_block_flag
)
1579 assemble_zeros (UNITS_PER_WORD
);
1581 /* If dbx symbol table desired, initialize writing it
1582 and output the predefined types. */
1583 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1584 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1585 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
1588 #ifdef SDB_DEBUGGING_INFO
1589 if (write_symbols
== SDB_DEBUG
)
1590 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
1593 #ifdef DWARF_DEBUGGING_INFO
1594 if (write_symbols
== DWARF_DEBUG
)
1595 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
1598 /* Initialize yet another pass. */
1600 init_final (main_input_filename
);
1602 start_time
= get_run_time ();
1604 /* Call the parser, which parses the entire file
1605 (calling rest_of_compilation for each function). */
1607 if (yyparse () != 0)
1608 if (errorcount
== 0)
1609 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
1611 /* Compilation is now finished except for writing
1612 what's left of the symbol table output. */
1614 parse_time
+= get_run_time () - start_time
;
1616 parse_time
-= integration_time
;
1617 parse_time
-= varconst_time
;
1619 globals
= getdecls ();
1621 /* Really define vars that have had only a tentative definition.
1622 Really output inline functions that must actually be callable
1623 and have not been output so far. */
1626 int len
= list_length (globals
);
1627 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
1631 /* Process the decls in reverse order--earliest first.
1632 Put them into VEC from back to front, then take out from front. */
1634 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
1635 vec
[len
- i
- 1] = decl
;
1637 for (i
= 0; i
< len
; i
++)
1640 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
1641 && ! TREE_ASM_WRITTEN (decl
))
1643 /* Don't write out static consts, unless we used them.
1644 (This used to write them out only if the address was
1645 taken, but that was wrong; if the variable was simply
1646 referred to, it still needs to exist or else it will
1647 be undefined in the linker.) */
1648 if (! TREE_READONLY (decl
)
1649 || TREE_PUBLIC (decl
)
1651 || TREE_ADDRESSABLE (decl
)
1652 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1653 rest_of_decl_compilation (decl
, 0, 1, 1);
1655 /* Cancel the RTL for this decl so that, if debugging info
1656 output for global variables is still to come,
1657 this one will be omitted. */
1658 DECL_RTL (decl
) = NULL
;
1661 if (TREE_CODE (decl
) == FUNCTION_DECL
1662 && ! TREE_ASM_WRITTEN (decl
)
1663 && DECL_INITIAL (decl
) != 0
1664 && (TREE_ADDRESSABLE (decl
)
1665 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1666 && ! TREE_EXTERNAL (decl
))
1667 output_inline_function (decl
);
1669 /* Warn about any function
1670 declared static but not defined.
1671 We don't warn about variables,
1672 because many programs have static variables
1673 that exist only to get some text into the object file. */
1676 || (DECL_NAME (decl
) && TREE_USED (DECL_NAME (decl
))))
1677 && TREE_CODE (decl
) == FUNCTION_DECL
1678 && DECL_INITIAL (decl
) == 0
1679 && TREE_EXTERNAL (decl
)
1680 && ! TREE_PUBLIC (decl
))
1681 warning_with_decl (decl
, "`%s' declared `static' but never defined");
1682 /* Warn about static fns or vars defined but not used,
1683 but not about inline functions
1684 since unused inline statics is normal practice. */
1686 && (TREE_CODE (decl
) == FUNCTION_DECL
1687 || TREE_CODE (decl
) == VAR_DECL
)
1688 && ! TREE_EXTERNAL (decl
)
1689 && ! TREE_PUBLIC (decl
)
1690 && ! TREE_USED (decl
)
1691 && ! TREE_INLINE (decl
)
1692 /* The TREE_USED bit for file-scope decls
1693 is kept in the identifier, to handle multiple
1694 external decls in different scopes. */
1695 && ! TREE_USED (DECL_NAME (decl
)))
1696 warning_with_decl (decl
, "`%s' defined but not used");
1698 #ifdef SDB_DEBUGGING_INFO
1699 /* The COFF linker can move initialized global vars to the end.
1700 And that can screw up the symbol ordering.
1701 By putting the symbols in that order to begin with,
1702 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
1703 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
1704 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
1705 && DECL_RTL (decl
) != 0)
1706 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1708 /* Output COFF information for non-global
1709 file-scope initialized variables. */
1710 if (write_symbols
== SDB_DEBUG
1711 && TREE_CODE (decl
) == VAR_DECL
1712 && DECL_INITIAL (decl
)
1713 && DECL_RTL (decl
) != 0
1714 && GET_CODE (DECL_RTL (decl
)) == MEM
)
1715 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
1716 #endif /* SDB_DEBUGGING_INFO */
1717 #ifdef DWARF_DEBUGGING_INFO
1718 /* Output DWARF information for file-scope tenative data object
1719 declarations, file-scope (extern) function declarations (which
1720 had no corresponding body) and file-scope tagged type declarations
1721 and definitions which have not yet been forced out. */
1723 if (write_symbols
== DWARF_DEBUG
1724 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
1725 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
1730 /* Do dbx symbols */
1731 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1732 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1733 TIMEVAR (symout_time
,
1735 dbxout_finish (asm_out_file
, main_input_filename
);
1739 #ifdef DWARF_DEBUGGING_INFO
1740 if (write_symbols
== DWARF_DEBUG
)
1741 TIMEVAR (symout_time
,
1747 /* Output some stuff at end of file if nec. */
1749 end_final (main_input_filename
);
1752 ASM_FILE_END (asm_out_file
);
1755 after_finish_compilation
:
1757 /* Language-specific end of compilation actions. */
1761 /* Close the dump files. */
1763 if (flag_gen_aux_info
)
1765 fclose (aux_info_file
);
1767 unlink (aux_info_file_name
);
1771 fclose (rtl_dump_file
);
1774 fclose (jump_opt_dump_file
);
1777 fclose (cse_dump_file
);
1780 fclose (loop_dump_file
);
1783 fclose (cse2_dump_file
);
1786 fclose (flow_dump_file
);
1790 dump_combine_total_stats (combine_dump_file
);
1791 fclose (combine_dump_file
);
1795 fclose (sched_dump_file
);
1798 fclose (local_reg_dump_file
);
1800 if (global_reg_dump
)
1801 fclose (global_reg_dump_file
);
1804 fclose (sched2_dump_file
);
1807 fclose (jump2_opt_dump_file
);
1810 fclose (dbr_sched_dump_file
);
1814 fclose (stack_reg_dump_file
);
1817 /* Close non-debugging input and output files. Take special care to note
1818 whether fclose returns an error, since the pages might still be on the
1819 buffer chain while the file is open. */
1822 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
1823 fatal_io_error (asm_file_name
);
1825 /* Print the times. */
1829 fprintf (stderr
,"\n");
1830 print_time ("parse", parse_time
);
1831 print_time ("integration", integration_time
);
1832 print_time ("jump", jump_time
);
1833 print_time ("cse", cse_time
);
1834 print_time ("loop", loop_time
);
1835 print_time ("cse2", cse2_time
);
1836 print_time ("flow", flow_time
);
1837 print_time ("combine", combine_time
);
1838 print_time ("sched", sched_time
);
1839 print_time ("local-alloc", local_alloc_time
);
1840 print_time ("global-alloc", global_alloc_time
);
1841 print_time ("sched2", sched2_time
);
1842 print_time ("dbranch", dbr_sched_time
);
1843 print_time ("shorten-branch", shorten_branch_time
);
1844 print_time ("stack-reg", stack_reg_time
);
1845 print_time ("final", final_time
);
1846 print_time ("varconst", varconst_time
);
1847 print_time ("symout", symout_time
);
1848 print_time ("dump", dump_time
);
1852 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
1853 and TYPE_DECL nodes.
1855 This does nothing for local (non-static) variables.
1856 Otherwise, it sets up the RTL and outputs any assembler code
1857 (label definition, storage allocation and initialization).
1859 DECL is the declaration. If ASMSPEC is nonzero, it specifies
1860 the assembler symbol name to be used. TOP_LEVEL is nonzero
1861 if this declaration is not within a function. */
1864 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
1870 /* Declarations of variables, and of functions defined elsewhere. */
1872 /* Forward declarations for nested functions are not "external",
1873 but we need to treat them as if they were. */
1874 if (TREE_STATIC (decl
) || TREE_EXTERNAL (decl
)
1875 || TREE_CODE (decl
) == FUNCTION_DECL
)
1876 TIMEVAR (varconst_time
,
1878 make_decl_rtl (decl
, asmspec
, top_level
);
1879 /* Don't output anything
1880 when a tentative file-scope definition is seen.
1881 But at end of compilation, do output code for them. */
1882 if (! (! at_end
&& top_level
1883 && (DECL_INITIAL (decl
) == 0
1884 || DECL_INITIAL (decl
) == error_mark_node
)))
1885 assemble_variable (decl
, top_level
, at_end
);
1887 else if (TREE_REGDECL (decl
) && asmspec
!= 0)
1889 if (decode_reg_name (asmspec
) >= 0)
1891 DECL_RTL (decl
) = 0;
1892 make_decl_rtl (decl
, asmspec
, top_level
);
1895 error ("invalid register name `%s' for register variable", asmspec
);
1897 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1898 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1899 && TREE_CODE (decl
) == TYPE_DECL
)
1900 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
1902 #ifdef SDB_DEBUGGING_INFO
1903 else if (write_symbols
== SDB_DEBUG
&& top_level
1904 && TREE_CODE (decl
) == TYPE_DECL
)
1905 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1909 /* Called after finishing a record, union or enumeral type. */
1912 rest_of_type_compilation (type
, toplev
)
1916 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1917 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1918 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1920 #ifdef SDB_DEBUGGING_INFO
1921 if (write_symbols
== SDB_DEBUG
)
1922 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1926 /* This is called from finish_function (within yyparse)
1927 after each top-level definition is parsed.
1928 It is supposed to compile that function or variable
1929 and output the assembler code for it.
1930 After we return, the tree storage is freed. */
1933 rest_of_compilation (decl
)
1937 int start_time
= get_run_time ();
1939 /* Nonzero if we have saved the original DECL_INITIAL of the function,
1940 to be restored after we finish compiling the function
1941 (for use when compiling inline calls to this function). */
1942 tree saved_block_tree
= 0;
1944 /* If we are reconsidering an inline function
1945 at the end of compilation, skip the stuff for making it inline. */
1947 if (DECL_SAVED_INSNS (decl
) == 0)
1949 int specd
= TREE_INLINE (decl
);
1952 /* If requested, consider whether to make this function inline. */
1953 if (specd
|| flag_inline_functions
)
1954 TIMEVAR (integration_time
,
1956 lose
= function_cannot_inline_p (decl
);
1959 if (warn_inline
&& specd
)
1960 warning_with_decl (decl
, lose
);
1961 TREE_INLINE (decl
) = 0;
1964 TREE_INLINE (decl
) = 1;
1967 insns
= get_insns ();
1969 /* Dump the rtl code if we are dumping rtl. */
1974 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
1975 IDENTIFIER_POINTER (DECL_NAME (decl
)));
1976 if (DECL_SAVED_INSNS (decl
))
1977 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
1978 print_rtl (rtl_dump_file
, insns
);
1979 fflush (rtl_dump_file
);
1982 /* If function is inline, and we don't yet know whether to
1983 compile it by itself, defer decision till end of compilation.
1984 finish_compilation will call rest_of_compilation again
1985 for those functions that need to be output. */
1987 if (TREE_INLINE (decl
)
1988 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
1989 && ! flag_keep_inline_functions
)
1990 || TREE_EXTERNAL (decl
)))
1992 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
1993 goto exit_rest_of_compilation
;
1996 /* If we have to compile the function now, save its rtl
1997 so that its compilation will not affect what others get. */
1998 if (TREE_INLINE (decl
))
2000 saved_block_tree
= DECL_INITIAL (decl
);
2001 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
2005 /* Suppress warnings for unused static functions
2006 defined (not just declared) in system headers. */
2007 if (in_system_header
&& TREE_STATIC (decl
) && !TREE_INLINE (decl
))
2008 TREE_USED (decl
) = 1;
2010 TREE_ASM_WRITTEN (decl
) = 1;
2012 /* Now that integrate will no longer see our rtl, we need not distinguish
2013 between the return value of this function and the return value of called
2015 rtx_equal_function_value_matters
= 0;
2017 if (rtl_dump_and_exit
|| flag_syntax_only
)
2019 goto exit_rest_of_compilation
;
2022 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2023 Note that that may have been done above, in save_for_inline_copying.
2024 The call to resume_temporary_allocation near the end of this function
2025 goes back to the usual state of affairs. */
2027 rtl_in_current_obstack ();
2030 /* If we are doing position-independent code generation, now
2031 is the time to output special prologues and epilogues.
2032 We do not want to do this earlier, because it just clutters
2033 up inline functions with meaningless insns. */
2038 insns
= get_insns ();
2040 /* Copy any shared structure that should not be shared. */
2042 unshare_all_rtl (insns
);
2044 /* Instantiate all virtual registers. */
2046 instantiate_virtual_regs (current_function_decl
, get_insns ());
2048 /* See if we have allocated stack slots that are not directly addressable.
2049 If so, scan all the insns and create explicit address computation
2050 for all references to such slots. */
2051 /* fixup_stack_slots (); */
2053 /* Do jump optimization the first time, if -opt.
2054 Also do it if -W, but in that case it doesn't change the rtl code,
2055 it only computes whether control can drop off the end of the function. */
2057 if (optimize
> 0 || extra_warnings
|| warn_return_type
2058 /* If function is `volatile', we should warn if it tries to return. */
2059 || TREE_THIS_VOLATILE (decl
))
2061 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
2062 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
2065 /* Dump rtl code after jump, if we are doing that. */
2070 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
2071 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2072 print_rtl (jump_opt_dump_file
, insns
);
2073 fflush (jump_opt_dump_file
);
2076 /* Perform common subexpression elimination.
2077 Nonzero value from `cse_main' means that jumps were simplified
2078 and some code may now be unreachable, so do
2079 jump optimization again. */
2084 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
2085 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2090 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
2092 if (flag_thread_jumps
)
2093 /* Hacks by tiemann & kenner. */
2094 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2096 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
2098 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
2101 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2104 /* Dump rtl code after cse, if we are doing that. */
2109 print_rtl (cse_dump_file
, insns
);
2110 fflush (cse_dump_file
);
2116 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
2117 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2120 /* Move constant computations out of loops. */
2126 loop_optimize (insns
, loop_dump
? loop_dump_file
: 0);
2130 /* Dump rtl code after loop opt, if we are doing that. */
2135 print_rtl (loop_dump_file
, insns
);
2136 fflush (loop_dump_file
);
2142 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
2143 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2146 if (optimize
> 0 && flag_rerun_cse_after_loop
)
2148 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
2150 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
2151 1, cse2_dump_file
));
2153 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2156 if (optimize
> 0 && flag_thread_jumps
)
2157 /* This pass of jump threading straightens out code
2158 that was kinked by loop optimization. */
2159 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2161 /* Dump rtl code after cse, if we are doing that. */
2166 print_rtl (cse2_dump_file
, insns
);
2167 fflush (cse2_dump_file
);
2170 /* We are no longer anticipating cse in this function, at least. */
2172 cse_not_expected
= 1;
2174 /* Now we choose between stupid (pcc-like) register allocation
2175 (if we got the -noreg switch and not -opt)
2176 and smart register allocation. */
2178 if (optimize
> 0) /* Stupid allocation probably won't work */
2179 obey_regdecls
= 0; /* if optimizations being done. */
2183 /* Print function header into flow dump now
2184 because doing the flow analysis makes some of the dump. */
2189 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
2190 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2197 regclass (insns
, max_reg_num ());
2198 stupid_life_analysis (insns
, max_reg_num (),
2204 /* Do control and data flow analysis,
2205 and write some of the results to dump file. */
2207 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
2209 if (warn_uninitialized
)
2211 uninitialized_vars_warning (DECL_INITIAL (decl
));
2212 setjmp_args_warning ();
2216 /* Dump rtl after flow analysis. */
2221 print_rtl (flow_dump_file
, insns
);
2222 fflush (flow_dump_file
);
2225 /* If -opt, try combining insns through substitution. */
2228 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
2230 /* Dump rtl code after insn combination. */
2235 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
2236 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2237 dump_combine_stats (combine_dump_file
);
2238 print_rtl (combine_dump_file
, insns
);
2239 fflush (combine_dump_file
);
2242 /* Print function header into sched dump now
2243 because doing the sched analysis makes some of the dump. */
2248 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
2249 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2252 if (optimize
> 0 && flag_schedule_insns
)
2254 /* Do control and data sched analysis,
2255 and write some of the results to dump file. */
2257 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
2260 /* Dump rtl after instruction scheduling. */
2265 print_rtl (sched_dump_file
, insns
);
2266 fflush (sched_dump_file
);
2269 /* Unless we did stupid register allocation,
2270 allocate pseudo-regs that are used only within 1 basic block. */
2273 TIMEVAR (local_alloc_time
,
2275 regclass (insns
, max_reg_num ());
2279 /* Dump rtl code after allocating regs within basic blocks. */
2284 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
2285 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2286 dump_flow_info (local_reg_dump_file
);
2287 dump_local_alloc (local_reg_dump_file
);
2288 print_rtl (local_reg_dump_file
, insns
);
2289 fflush (local_reg_dump_file
);
2292 if (global_reg_dump
)
2294 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
2295 IDENTIFIER_POINTER (DECL_NAME (decl
))));
2297 /* Unless we did stupid register allocation,
2298 allocate remaining pseudo-regs, then do the reload pass
2299 fixing up any insns that are invalid. */
2301 TIMEVAR (global_alloc_time
,
2304 global_alloc (global_reg_dump
? global_reg_dump_file
: 0);
2307 global_reg_dump
? global_reg_dump_file
: 0);
2310 if (global_reg_dump
)
2313 dump_global_regs (global_reg_dump_file
);
2314 print_rtl (global_reg_dump_file
, insns
);
2315 fflush (global_reg_dump_file
);
2318 reload_completed
= 1;
2320 if (optimize
> 0 && flag_schedule_insns_after_reload
)
2325 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
2326 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2329 /* Do control and data sched analysis again,
2330 and write some more of the results to dump file. */
2332 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
2334 /* Dump rtl after post-reorder instruction scheduling. */
2339 print_rtl (sched2_dump_file
, insns
);
2340 fflush (sched2_dump_file
);
2344 #ifdef LEAF_REGISTERS
2346 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
2350 /* One more attempt to remove jumps to .+1
2351 left by dead-store-elimination.
2352 Also do cross-jumping this time
2353 and delete no-op move insns. */
2357 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
2360 /* Dump rtl code after jump, if we are doing that. */
2365 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
2366 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2367 print_rtl (jump2_opt_dump_file
, insns
);
2368 fflush (jump2_opt_dump_file
);
2371 /* If a scheduling pass for delayed branches is to be done,
2372 call the scheduling code. */
2375 if (optimize
> 0 && flag_delayed_branch
)
2377 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
2382 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
2383 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2384 print_rtl (dbr_sched_dump_file
, insns
);
2385 fflush (dbr_sched_dump_file
);
2392 /* Shorten branches. */
2393 TIMEVAR (shorten_branch_time
,
2395 shorten_branches (get_insns ());
2399 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
2404 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
2405 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2406 print_rtl (stack_reg_dump_file
, insns
);
2407 fflush (stack_reg_dump_file
);
2412 /* Now turn the rtl into assembler code. */
2414 TIMEVAR (final_time
,
2419 /* Get the function's name, as described by its RTL.
2420 This may be different from the DECL_NAME name used
2421 in the source file. */
2423 x
= DECL_RTL (decl
);
2424 if (GET_CODE (x
) != MEM
)
2427 if (GET_CODE (x
) != SYMBOL_REF
)
2429 fnname
= XSTR (x
, 0);
2431 assemble_start_function (decl
, fnname
);
2432 final_start_function (insns
, asm_out_file
, optimize
);
2433 final (insns
, asm_out_file
, optimize
, 0);
2434 final_end_function (insns
, asm_out_file
, optimize
);
2435 assemble_end_function (decl
, fnname
);
2436 fflush (asm_out_file
);
2439 /* Write DBX symbols if requested */
2441 /* Note that for those inline functions where we don't initially
2442 know for certain that we will be generating an out-of-line copy,
2443 the first invocation of this routine (rest_of_compilation) will
2444 skip over this code by doing a `goto exit_rest_of_compilation;'.
2445 Later on, finish_compilation will call rest_of_compilation again
2446 for those inline functions that need to have out-of-line copies
2447 generated. During that call, we *will* be routed past here. */
2449 #ifdef DBX_DEBUGGING_INFO
2450 if (write_symbols
== DBX_DEBUG
)
2451 TIMEVAR (symout_time
, dbxout_function (decl
));
2454 #ifdef DWARF_DEBUGGING_INFO
2455 if (write_symbols
== DWARF_DEBUG
)
2456 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2459 exit_rest_of_compilation
:
2461 /* In case the function was not output,
2462 don't leave any temporary anonymous types
2463 queued up for sdb output. */
2464 #ifdef SDB_DEBUGGING_INFO
2465 if (write_symbols
== SDB_DEBUG
)
2469 /* Put back the tree of subblocks from before we copied it.
2470 Code generation and the output of debugging info may have modified
2471 the copy, but the original is unchanged. */
2473 if (saved_block_tree
!= 0)
2474 DECL_INITIAL (decl
) = saved_block_tree
;
2476 reload_completed
= 0;
2478 /* Clear out the real_constant_chain before some of the rtx's
2479 it runs through become garbage. */
2481 clear_const_double_mem ();
2483 /* Cancel the effect of rtl_in_current_obstack. */
2485 resume_temporary_allocation ();
2487 /* The parsing time is all the time spent in yyparse
2488 *except* what is spent in this function. */
2490 parse_time
-= get_run_time () - start_time
;
2493 /* Entry point of cc1/c++. Decode command args, then call compile_file.
2494 Exit code is 35 if can't open files, 34 if fatal error,
2495 33 if had nonfatal errors, else success. */
2498 main (argc
, argv
, envp
)
2505 int flag_print_mem
= 0;
2506 int version_flag
= 0;
2509 /* save in case md file wants to emit args as a comment. */
2513 p
= argv
[0] + strlen (argv
[0]);
2514 while (p
!= argv
[0] && p
[-1] != '/') --p
;
2518 /* Get rid of any avoidable limit on stack size. */
2522 /* Set the stack limit huge so that alloca does not fail. */
2523 getrlimit (RLIMIT_STACK
, &rlim
);
2524 rlim
.rlim_cur
= rlim
.rlim_max
;
2525 setrlimit (RLIMIT_STACK
, &rlim
);
2527 #endif /* RLIMIT_STACK */
2529 signal (SIGFPE
, float_signal
);
2531 signal (SIGPIPE
, pipe_closed
);
2533 decl_printable_name
= decl_name
;
2534 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
2536 /* Initialize whether `char' is signed. */
2537 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
2538 #ifdef DEFAULT_SHORT_ENUMS
2539 /* Initialize how much space enums occupy, by default. */
2540 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
2543 /* Scan to see what optimization level has been specified. That will
2544 determine the default value of many flags. */
2545 for (i
= 1; i
< argc
; i
++)
2547 if (!strcmp (argv
[i
], "-O"))
2551 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
2553 /* Handle -O2, -O3, -O69, ... */
2554 char *p
= &argv
[i
][2];
2558 if (! (c
>= '0' && c
<= '9'))
2561 optimize
= atoi (&argv
[i
][2]);
2565 obey_regdecls
= (optimize
== 0);
2574 flag_thread_jumps
= 1;
2576 flag_delayed_branch
= 1;
2582 flag_cse_follow_jumps
= 1;
2583 flag_expensive_optimizations
= 1;
2584 flag_strength_reduce
= 1;
2585 flag_rerun_cse_after_loop
= 1;
2586 flag_caller_saves
= 1;
2587 #ifdef INSN_SCHEDULING
2588 flag_schedule_insns
= 1;
2589 flag_schedule_insns_after_reload
= 1;
2593 #ifdef OPTIMIZATION_OPTIONS
2594 /* Allow default optimizations to be specified on a per-machine basis. */
2595 OPTIMIZATION_OPTIONS (optimize
);
2598 /* Initialize register usage now so switches may override. */
2602 set_target_switch ("");
2604 for (i
= 1; i
< argc
; i
++)
2606 if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
2608 register char *str
= argv
[i
] + 1;
2613 set_target_switch (&str
[1]);
2614 else if (!strcmp (str
, "dumpbase"))
2616 dump_base_name
= argv
[++i
];
2618 else if (str
[0] == 'd')
2620 register char *p
= &str
[1];
2628 global_reg_dump
= 1;
2634 cse_dump
= 1, cse2_dump
= 1;
2652 global_reg_dump
= 1;
2670 flag_print_asm_name
= 1;
2692 rtl_dump_and_exit
= 1;
2696 else if (str
[0] == 'f')
2699 register char *p
= &str
[1];
2702 /* Some kind of -f option.
2703 P's value is the option sans `-f'.
2704 Search for it in the table of options. */
2707 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
2710 if (!strcmp (p
, f_options
[j
].string
))
2712 *f_options
[j
].variable
= f_options
[j
].on_value
;
2713 /* A goto here would be cleaner,
2714 but breaks the vax pcc. */
2717 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2718 && ! strcmp (p
+3, f_options
[j
].string
))
2720 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
2727 else if (!strncmp (p
, "fixed-", 6))
2728 fix_register (&p
[6], 1, 1);
2729 else if (!strncmp (p
, "call-used-", 10))
2730 fix_register (&p
[10], 0, 1);
2731 else if (!strncmp (p
, "call-saved-", 11))
2732 fix_register (&p
[11], 0, 0);
2733 else if (! lang_decode_option (argv
[i
]))
2734 error ("Invalid option `%s'", argv
[i
]);
2736 else if (str
[0] == 'O')
2738 register char *p
= str
+1;
2739 while (*p
&& *p
>= '0' && *p
<= '9')
2744 error ("Invalid option `%s'", argv
[i
]);
2746 else if (!strcmp (str
, "pedantic"))
2748 else if (!strcmp (str
, "pedantic-errors"))
2749 flag_pedantic_errors
= pedantic
= 1;
2750 else if (lang_decode_option (argv
[i
]))
2752 else if (!strcmp (str
, "quiet"))
2754 else if (!strcmp (str
, "version"))
2756 else if (!strcmp (str
, "w"))
2757 inhibit_warnings
= 1;
2758 else if (!strcmp (str
, "W"))
2761 warn_uninitialized
= 1;
2763 else if (str
[0] == 'W')
2766 register char *p
= &str
[1];
2769 /* Some kind of -W option.
2770 P's value is the option sans `-W'.
2771 Search for it in the table of options. */
2774 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
2777 if (!strcmp (p
, W_options
[j
].string
))
2779 *W_options
[j
].variable
= W_options
[j
].on_value
;
2780 /* A goto here would be cleaner,
2781 but breaks the vax pcc. */
2784 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2785 && ! strcmp (p
+3, W_options
[j
].string
))
2787 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
2794 else if (!strncmp (p
, "id-clash-", 9))
2800 if (*endp
>= '0' && *endp
<= '9')
2803 error ("Invalid option `%s'", argv
[i
]);
2806 id_clash_len
= atoi (str
+ 10);
2809 error ("Invalid option `%s'", argv
[i
]);
2811 else if (!strcmp (str
, "p"))
2813 else if (!strcmp (str
, "a"))
2815 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
2816 warning ("`-a' option (basic block profile) not supported");
2818 profile_block_flag
= 1;
2821 else if (str
[0] == 'g')
2828 while (*p
&& (*p
< '0' || *p
> '9'))
2832 while (*q
&& (*q
>= '0' && *q
<= '9'))
2837 level
= 2; /* default debugging info level */
2838 if (*q
|| level
> 3)
2840 warning ("invalid debug level specification in option: `-%s'",
2842 warning ("no debugging information will be generated");
2846 /* If more than one debugging type is supported,
2847 you must define PREFERRED_DEBUGGING_TYPE
2848 to choose a format in a system-dependent way. */
2849 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
2850 + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
2851 #ifdef PREFERRED_DEBUGGING_TYPE
2852 if (!strncmp (str
, "ggdb", len
))
2853 write_symbols
= PREFERRED_DEBUGGING_TYPE
;
2854 #else /* no PREFERRED_DEBUGGING_TYPE */
2855 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
2856 #endif /* no PREFERRED_DEBUGGING_TYPE */
2857 #endif /* More than one debugger format enabled. */
2858 #ifdef DBX_DEBUGGING_INFO
2859 if (write_symbols
!= NO_DEBUG
)
2861 else if (!strncmp (str
, "ggdb", len
))
2862 write_symbols
= DBX_DEBUG
;
2863 else if (!strncmp (str
, "gstabs", len
))
2864 write_symbols
= DBX_DEBUG
;
2866 /* Always enable extensions for -ggdb or -gstabs+,
2867 always disable for -gstabs.
2868 For plain -g, use system-specific default. */
2869 if (write_symbols
== DBX_DEBUG
&& !strncmp (str
, "ggdb", len
)
2871 use_gdb_dbx_extensions
= 1;
2872 else if (write_symbols
== DBX_DEBUG
&& !strcmp (str
, "gstabs+"))
2873 use_gdb_dbx_extensions
= 1;
2874 else if (write_symbols
== DBX_DEBUG
2875 && !strncmp (str
, "gstabs", len
) && len
>= 2)
2876 use_gdb_dbx_extensions
= 0;
2878 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2879 #endif /* DBX_DEBUGGING_INFO */
2880 #ifdef DWARF_DEBUGGING_INFO
2881 if (write_symbols
!= NO_DEBUG
)
2883 else if (!strncmp (str
, "ggdb", len
))
2884 write_symbols
= DWARF_DEBUG
;
2885 /* For orthogonality. */
2886 else if (!strncmp (str
, "gdwarf", len
))
2887 write_symbols
= DWARF_DEBUG
;
2889 #ifdef SDB_DEBUGGING_INFO
2890 if (write_symbols
!= NO_DEBUG
)
2892 else if (!strncmp (str
, "ggdb", len
))
2893 write_symbols
= SDB_DEBUG
;
2894 else if (!strncmp (str
, "gcoff", len
))
2895 write_symbols
= SDB_DEBUG
;
2896 #endif /* SDB_DEBUGGING_INFO */
2897 #ifdef XCOFF_DEBUGGING_INFO
2898 if (write_symbols
!= NO_DEBUG
)
2900 else if (!strncmp (str
, "ggdb", len
))
2901 write_symbols
= XCOFF_DEBUG
;
2902 else if (!strncmp (str
, "gxcoff", len
))
2903 write_symbols
= XCOFF_DEBUG
;
2905 /* Always enable extensions for -ggdb,
2906 always disable for -gxcoff.
2907 For plain -g, use system-specific default. */
2908 if (write_symbols
== XCOFF_DEBUG
&& !strncmp (str
, "ggdb", len
)
2910 use_gdb_dbx_extensions
= 1;
2911 else if (write_symbols
== DBX_DEBUG
2912 && !strncmp (str
, "gxcoff", len
) && len
>= 2)
2913 use_gdb_dbx_extensions
= 0;
2915 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2917 if (write_symbols
== NO_DEBUG
)
2918 warning ("`-%s' option not supported on this version of GCC", str
);
2919 else if (level
== 0)
2920 write_symbols
= NO_DEBUG
;
2922 debug_info_level
= level
;
2924 else if (!strcmp (str
, "o"))
2926 asm_file_name
= argv
[++i
];
2928 else if (str
[0] == 'G')
2930 g_switch_set
= TRUE
;
2931 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
2933 else if (!strncmp (str
, "aux-info", 8))
2935 flag_gen_aux_info
= 1;
2936 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
2939 error ("Invalid option `%s'", argv
[i
]);
2941 else if (argv
[i
][0] == '+')
2943 if (lang_decode_option (argv
[i
]))
2946 error ("Invalid option `%s'", argv
[i
]);
2952 /* Inlining does not work if not optimizing,
2953 so force it not to be done. */
2960 #ifdef OVERRIDE_OPTIONS
2961 /* Some machines may reject certain combinations of options. */
2965 /* Unrolling all loops implies that standard loop unrolling must also
2967 if (flag_unroll_all_loops
)
2968 flag_unroll_loops
= 1;
2969 /* Loop unrolling requires that strength_reduction be on also. Silently
2970 turn on strength reduction here if it isn't already on. Also, the loop
2971 unrolling code assumes that cse will be run after loop, so that must
2972 be turned on also. */
2973 if (flag_unroll_loops
)
2975 flag_strength_reduce
= 1;
2976 flag_rerun_cse_after_loop
= 1;
2979 /* Warn about options that are not supported on this machine. */
2980 #ifndef INSN_SCHEDULING
2981 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
2982 warning ("instruction scheduling not supported on this target machine");
2985 if (flag_delayed_branch
)
2986 warning ("this target machine does not have delayed branches");
2989 /* If we are in verbose mode, write out the version and maybe all the
2990 option flags in use. */
2993 fprintf (stderr
, "%s version %s", language_string
, version_string
);
2994 #ifdef TARGET_VERSION
2999 #define __VERSION__ "[unknown]"
3001 fprintf (stderr
, " compiled by GNU C version %s.\n", __VERSION__
);
3003 fprintf (stderr
, " compiled by CC.\n");
3006 print_switch_values ();
3009 /* Now that register usage is specified, convert it to HARD_REG_SETs. */
3012 compile_file (filename
);
3017 char *lim
= (char *) sbrk (0);
3019 fprintf (stderr
, "Data size %d.\n",
3020 (int) lim
- (int) &environ
);
3024 system ("ps -l 1>&2");
3027 #endif /* not USG */
3029 #endif /* not VMS */
3032 exit (FATAL_EXIT_CODE
);
3034 exit (FATAL_EXIT_CODE
);
3035 exit (SUCCESS_EXIT_CODE
);
3039 /* Decode -m switches. */
3041 /* Here is a table, controlled by the tm.h file, listing each -m switch
3042 and which bits in `target_switches' it should set or clear.
3043 If VALUE is positive, it is bits to set.
3044 If VALUE is negative, -VALUE is bits to clear.
3045 (The sign bit is not used so there is no confusion.) */
3047 struct {char *name
; int value
;} target_switches
[]
3050 /* This table is similar, but allows the switch to have a value. */
3052 #ifdef TARGET_OPTIONS
3053 struct {char *prefix
; char ** variable
;} target_options
[]
3057 /* Decode the switch -mNAME. */
3060 set_target_switch (name
)
3066 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3067 if (!strcmp (target_switches
[j
].name
, name
))
3069 if (target_switches
[j
].value
< 0)
3070 target_flags
&= ~-target_switches
[j
].value
;
3072 target_flags
|= target_switches
[j
].value
;
3076 #ifdef TARGET_OPTIONS
3078 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
3080 int len
= strlen (target_options
[j
].prefix
);
3081 if (!strncmp (target_options
[j
].prefix
, name
, len
))
3083 *target_options
[j
].variable
= name
+ len
;
3090 error ("Invalid option `%s'", name
);
3093 /* Variable used for communication between the following two routines. */
3095 static int line_position
;
3097 /* Print an option value and adjust the position in the line. */
3100 print_single_switch (type
, name
)
3103 fprintf (stderr
, " %s%s", type
, name
);
3105 line_position
+= strlen (type
) + strlen (name
) + 1;
3107 if (line_position
> 65)
3109 fprintf (stderr
, "\n\t");
3114 /* Print default target switches for -version. */
3117 print_switch_values ()
3121 fprintf (stderr
, "enabled:");
3124 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
3125 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
3126 print_single_switch ("-f", f_options
[j
].string
);
3128 for (j
= 0; j
< sizeof W_options
/ sizeof W_options
[0]; j
++)
3129 if (*W_options
[j
].variable
== W_options
[j
].on_value
)
3130 print_single_switch ("-W", W_options
[j
].string
);
3132 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3133 if (target_switches
[j
].name
[0] != '\0'
3134 && target_switches
[j
].value
> 0
3135 && ((target_switches
[j
].value
& target_flags
)
3136 == target_switches
[j
].value
))
3137 print_single_switch ("-m", target_switches
[j
].name
);
3139 fprintf (stderr
, "\n");