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 -fcse-skip-blocks:
297 have cse follow a branch around a block. */
298 int flag_cse_skip_blocks
;
300 /* Nonzero for -fexpensive-optimizations:
301 perform miscellaneous relatively-expensive optimizations. */
302 int flag_expensive_optimizations
;
304 /* Nonzero for -fthread-jumps:
305 have jump optimize output of loop. */
307 int flag_thread_jumps
;
309 /* Nonzero enables strength-reduction in loop.c. */
311 int flag_strength_reduce
= 0;
313 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
314 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
315 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
318 int flag_unroll_loops
;
320 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
321 This is generally not a win. */
323 int flag_unroll_all_loops
;
325 /* Nonzero for -fwritable-strings:
326 store string constants in data segment and don't uniquize them. */
328 int flag_writable_strings
= 0;
330 /* Nonzero means don't put addresses of constant functions in registers.
331 Used for compiling the Unix kernel, where strange substitutions are
332 done on the assembly output. */
334 int flag_no_function_cse
= 0;
336 /* Nonzero for -fomit-frame-pointer:
337 don't make a frame pointer in simple functions that don't require one. */
339 int flag_omit_frame_pointer
= 0;
341 /* Nonzero to inhibit use of define_optimization peephole opts. */
343 int flag_no_peephole
= 0;
345 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
346 operations in the interest of optimization. For example it allows
347 GCC to assume arguments to sqrt are nonnegative numbers, allowing
348 faster code for sqrt to be generated. */
350 int flag_fast_math
= 0;
352 /* Nonzero means all references through pointers are volatile. */
356 /* Nonzero means just do syntax checking; don't output anything. */
358 int flag_syntax_only
= 0;
360 /* Nonzero means to rerun cse after loop optimization. This increases
361 compilation time about 20% and picks up a few more common expressions. */
363 static int flag_rerun_cse_after_loop
;
365 /* Nonzero for -finline-functions: ok to inline functions that look like
366 good inline candidates. */
368 int flag_inline_functions
;
370 /* Nonzero for -fkeep-inline-functions: even if we make a function
371 go inline everywhere, keep its defintion around for debugging
374 int flag_keep_inline_functions
;
376 /* Nonzero means that functions declared `inline' will be treated
377 as `static'. Prevents generation of zillions of copies of unused
378 static inline functions; instead, `inlines' are written out
379 only when actually used. Used in conjunction with -g. Also
380 does the right thing with #pragma interface. */
384 /* Nonzero means we should be saving declaration info into a .X file. */
386 int flag_gen_aux_info
= 0;
388 /* Specified name of aux-info file. */
390 static char *aux_info_file_name
;
392 /* Nonzero means make the text shared if supported. */
394 int flag_shared_data
;
396 /* Nonzero means schedule into delayed branch slots if supported. */
398 int flag_delayed_branch
;
400 /* Nonzero if we are compiling pure (sharable) code.
401 Value is 1 if we are doing reasonable (i.e. simple
402 offset into offset table) pic. Value is 2 if we can
403 only perform register offsets. */
407 /* Nonzero means place uninitialized global data in the bss section. */
411 /* Nonzero means pretend it is OK to examine bits of target floats,
412 even if that isn't true. The resulting code will have incorrect constants,
413 but the same series of instructions that the native compiler would make. */
415 int flag_pretend_float
;
417 /* Nonzero means change certain warnings into errors.
418 Usually these are warnings about failure to conform to some standard. */
420 int flag_pedantic_errors
= 0;
422 /* flag_schedule_insns means schedule insns within basic blocks (before
424 flag_schedule_insns_after_reload means schedule insns after
427 int flag_schedule_insns
= 0;
428 int flag_schedule_insns_after_reload
= 0;
430 /* -finhibit-size-directive inhibits output of .size for ELF.
431 This is used only for compiling crtstuff.c,
432 and it may be extended to other effects
433 needed for crtstuff.c on other systems. */
434 int flag_inhibit_size_directive
= 0;
436 /* -fverbose-asm causes extra commentary information to be produced in
437 the generated assembly code (to make it more readable). This option
438 is generally only of use to those who actually need to read the
439 generated assembly code (perhaps while debugging the compiler itself). */
441 int flag_verbose_asm
= 0;
443 /* -fgnu-linker specifies use of the GNU linker for initializations.
444 (Or, more generally, a linker that handles initializations.)
445 -fno-gnu-linker says that collect2 will be used. */
447 int flag_gnu_linker
= 0;
449 int flag_gnu_linker
= 1;
452 /* Table of language-independent -f options.
453 STRING is the option name. VARIABLE is the address of the variable.
454 ON_VALUE is the value to store in VARIABLE
455 if `-fSTRING' is seen as an option.
456 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
458 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
460 {"float-store", &flag_float_store
, 1},
461 {"volatile", &flag_volatile
, 1},
462 {"defer-pop", &flag_defer_pop
, 1},
463 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
464 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
465 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
466 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
467 {"thread-jumps", &flag_thread_jumps
, 1},
468 {"strength-reduce", &flag_strength_reduce
, 1},
469 {"unroll-loops", &flag_unroll_loops
, 1},
470 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
471 {"writable-strings", &flag_writable_strings
, 1},
472 {"peephole", &flag_no_peephole
, 0},
473 {"force-mem", &flag_force_mem
, 1},
474 {"force-addr", &flag_force_addr
, 1},
475 {"function-cse", &flag_no_function_cse
, 0},
476 {"inline-functions", &flag_inline_functions
, 1},
477 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
478 {"inline", &flag_no_inline
, 0},
479 {"syntax-only", &flag_syntax_only
, 1},
480 {"shared-data", &flag_shared_data
, 1},
481 {"caller-saves", &flag_caller_saves
, 1},
482 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
483 {"delayed-branch", &flag_delayed_branch
, 1},
484 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
485 {"pretend-float", &flag_pretend_float
, 1},
486 {"schedule-insns", &flag_schedule_insns
, 1},
487 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
488 {"pic", &flag_pic
, 1},
489 {"PIC", &flag_pic
, 2},
490 {"fast-math", &flag_fast_math
, 1},
491 {"common", &flag_no_common
, 0},
492 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
493 {"verbose-asm", &flag_verbose_asm
, 1},
494 {"gnu-linker", &flag_gnu_linker
, 1}
497 /* Options controlling warnings */
499 /* Don't print warning messages. -w. */
501 int inhibit_warnings
= 0;
503 /* Print various extra warnings. -W. */
505 int extra_warnings
= 0;
507 /* Treat warnings as errors. -Werror. */
509 int warnings_are_errors
= 0;
511 /* Nonzero to warn about unused local variables. */
515 /* Nonzero to warn about variables used before they are initialized. */
517 int warn_uninitialized
;
519 /* Nonzero means warn about all declarations which shadow others. */
523 /* Warn if a switch on an enum fails to have a case for every enum value. */
527 /* Nonzero means warn about function definitions that default the return type
528 or that use a null return and have a return-type other than void. */
530 int warn_return_type
;
532 /* Nonzero means warn about pointer casts that increase the required
533 alignment of the target type (and might therefore lead to a crash
534 due to a misaligned access). */
538 /* Nonzero means warn about any identifiers that match in the first N
539 characters. The value N is in `id_clash_len'. */
544 /* Nonzero means warn if inline function is too large. */
548 /* Warn if a function returns an aggregate,
549 since there are often incompatible calling conventions for doing this. */
551 int warn_aggregate_return
;
553 /* Likewise for -W. */
555 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
557 {"unused", &warn_unused
, 1},
558 {"error", &warnings_are_errors
, 1},
559 {"shadow", &warn_shadow
, 1},
560 {"switch", &warn_switch
, 1},
561 {"return-type", &warn_return_type
, 1},
562 {"aggregate-return", &warn_aggregate_return
, 1},
563 {"cast-align", &warn_cast_align
, 1},
564 {"uninitialized", &warn_uninitialized
, 1},
565 {"inline", &warn_inline
, 1}
568 /* Output files for assembler code (real compiler output)
569 and debugging dumps. */
574 FILE *jump_opt_dump_file
;
576 FILE *loop_dump_file
;
577 FILE *cse2_dump_file
;
578 FILE *flow_dump_file
;
579 FILE *combine_dump_file
;
580 FILE *sched_dump_file
;
581 FILE *local_reg_dump_file
;
582 FILE *global_reg_dump_file
;
583 FILE *sched2_dump_file
;
584 FILE *jump2_opt_dump_file
;
585 FILE *dbr_sched_dump_file
;
586 FILE *stack_reg_dump_file
;
588 /* Time accumulators, to count the total time spent in various passes. */
592 int integration_time
;
600 int local_alloc_time
;
601 int global_alloc_time
;
604 int shorten_branch_time
;
610 /* Return time used so far, in microseconds. */
619 struct rusage rusage
;
624 int proc_system_time
;
626 int child_system_time
;
636 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
639 getrusage (0, &rusage
);
640 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
641 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
644 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
649 #define TIMEVAR(VAR, BODY) \
650 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
653 print_time (str
, total
)
658 "time in %s: %d.%06d\n",
659 str
, total
/ 1000000, total
% 1000000);
662 /* Count an error or warning. Return 1 if the message should be printed. */
665 count_error (warningp
)
668 if (warningp
&& inhibit_warnings
)
671 if (warningp
&& !warnings_are_errors
)
675 static int warning_message
= 0;
677 if (warningp
&& !warning_message
)
679 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
688 /* Print a fatal error message. NAME is the text.
689 Also include a system error message based on `errno'. */
692 pfatal_with_name (name
)
695 fprintf (stderr
, "%s: ", progname
);
701 fatal_io_error (name
)
704 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
717 /* Called to give a better error message when we don't have an insn to match
718 what we are looking for or if the insn's constraints aren't satisfied,
719 rather than just calling abort(). */
722 fatal_insn_not_found (insn
)
725 if (INSN_CODE (insn
) < 0)
726 error ("internal error--unrecognizable insn:", 0);
728 error ("internal error--insn does not satisfy its constraints:", 0);
731 fflush (asm_out_file
);
733 fflush (aux_info_file
);
735 fflush (rtl_dump_file
);
736 if (jump_opt_dump_file
)
737 fflush (jump_opt_dump_file
);
739 fflush (cse_dump_file
);
741 fflush (loop_dump_file
);
743 fflush (cse2_dump_file
);
745 fflush (flow_dump_file
);
746 if (combine_dump_file
)
747 fflush (combine_dump_file
);
749 fflush (sched_dump_file
);
750 if (local_reg_dump_file
)
751 fflush (local_reg_dump_file
);
752 if (global_reg_dump_file
)
753 fflush (global_reg_dump_file
);
754 if (sched2_dump_file
)
755 fflush (sched2_dump_file
);
756 if (jump2_opt_dump_file
)
757 fflush (jump2_opt_dump_file
);
758 if (dbr_sched_dump_file
)
759 fflush (dbr_sched_dump_file
);
760 if (stack_reg_dump_file
)
761 fflush (stack_reg_dump_file
);
765 /* This is the default decl_printable_name function. */
768 decl_name (decl
, kind
)
772 return IDENTIFIER_POINTER (DECL_NAME (decl
));
775 static int need_error_newline
;
777 /* Function of last error message;
778 more generally, function such that if next error message is in it
779 then we don't have to mention the function name. */
780 static tree last_error_function
= NULL
;
782 /* Used to detect when input_file_stack has changed since last described. */
783 static int last_error_tick
;
785 /* Called when the start of a function definition is parsed,
786 this function prints on stderr the name of the function. */
789 announce_function (decl
)
795 if (rtl_dump_and_exit
)
796 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
798 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, &junk
));
800 need_error_newline
= 1;
801 last_error_function
= current_function_decl
;
805 /* Prints out, if necessary, the name of the current function
806 which caused an error. Called from all error and warning functions. */
809 report_error_function (file
)
812 struct file_stack
*p
;
814 if (need_error_newline
)
816 fprintf (stderr
, "\n");
817 need_error_newline
= 0;
820 if (last_error_function
!= current_function_decl
)
822 char *kind
= "function";
823 if (current_function_decl
!= 0
824 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
828 fprintf (stderr
, "%s: ", file
);
830 if (current_function_decl
== NULL
)
831 fprintf (stderr
, "At top level:\n");
834 char *name
= (*decl_printable_name
) (current_function_decl
, &kind
);
835 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
838 last_error_function
= current_function_decl
;
840 if (input_file_stack
&& input_file_stack
->next
!= 0
841 && input_file_stack_tick
!= last_error_tick
)
843 fprintf (stderr
, "In file included");
844 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
846 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
848 fprintf (stderr
, ",");
850 fprintf (stderr
, ":\n");
851 last_error_tick
= input_file_stack_tick
;
855 /* Report an error at the current line number.
856 S and V are a string and an arg for `printf'. */
861 int v
; /* @@also used as pointer */
862 int v2
; /* @@also used as pointer */
864 error_with_file_and_line (input_filename
, lineno
, s
, v
, v2
);
867 /* Report an error at line LINE of file FILE.
868 S and V are a string and an arg for `printf'. */
871 error_with_file_and_line (file
, line
, s
, v
, v2
)
880 report_error_function (file
);
883 fprintf (stderr
, "%s:%d: ", file
, line
);
885 fprintf (stderr
, "%s: ", progname
);
886 fprintf (stderr
, s
, v
, v2
);
887 fprintf (stderr
, "\n");
890 /* Report an error at the declaration DECL.
891 S and V are a string and an arg which uses %s to substitute the declaration name. */
894 error_with_decl (decl
, s
, v
)
902 report_error_function (DECL_SOURCE_FILE (decl
));
904 fprintf (stderr
, "%s:%d: ",
905 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
907 if (DECL_NAME (decl
))
908 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
910 fprintf (stderr
, s
, "((anonymous))", v
);
911 fprintf (stderr
, "\n");
914 /* Report an error at the line number of the insn INSN.
915 S and V are a string and an arg for `printf'.
916 This is used only when INSN is an `asm' with operands,
917 and each ASM_OPERANDS records its own source file and line. */
920 error_for_asm (insn
, s
, v
, v2
)
923 int v
; /* @@also used as pointer */
924 int v2
; /* @@also used as pointer */
928 rtx body
= PATTERN (insn
);
931 /* Find the (or one of the) ASM_OPERANDS in the insn. */
932 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
933 asmop
= SET_SRC (body
);
934 else if (GET_CODE (body
) == ASM_OPERANDS
)
936 else if (GET_CODE (body
) == PARALLEL
937 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
938 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
939 else if (GET_CODE (body
) == PARALLEL
940 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
941 asmop
= XVECEXP (body
, 0, 0);
943 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
944 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
946 error_with_file_and_line (filename
, line
, s
, v
, v2
);
949 /* Report a warning at line LINE.
950 S and V are a string and an arg for `printf'. */
953 warning_with_file_and_line (file
, line
, s
, v
, v2
, v3
)
961 if (count_error (1) == 0)
964 report_error_function (file
);
967 fprintf (stderr
, "%s:%d: ", file
, line
);
969 fprintf (stderr
, "%s: ", progname
);
971 fprintf (stderr
, "warning: ");
972 fprintf (stderr
, s
, v
, v2
, v3
);
973 fprintf (stderr
, "\n");
976 /* Report a warning at the current line number.
977 S and V are a string and an arg for `printf'. */
980 warning (s
, v
, v2
, v3
)
982 int v
; /* @@also used as pointer */
986 warning_with_file_and_line (input_filename
, lineno
, s
, v
, v2
, v3
);
989 /* Report a warning at the declaration DECL.
990 S is string which uses %s to substitute the declaration name.
991 V is a second parameter that S can refer to. */
994 warning_with_decl (decl
, s
, v
)
1001 if (count_error (1) == 0)
1004 report_error_function (DECL_SOURCE_FILE (decl
));
1006 fprintf (stderr
, "%s:%d: ",
1007 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1009 fprintf (stderr
, "warning: ");
1010 if (DECL_NAME (decl
))
1011 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
1013 fprintf (stderr
, s
, "((anonymous))", v
);
1014 fprintf (stderr
, "\n");
1017 /* Report a warning at the line number of the insn INSN.
1018 S and V are a string and an arg for `printf'.
1019 This is used only when INSN is an `asm' with operands,
1020 and each ASM_OPERANDS records its own source file and line. */
1023 warning_for_asm (insn
, s
, v
, v2
)
1026 int v
; /* @@also used as pointer */
1027 int v2
; /* @@also used as pointer */
1031 rtx body
= PATTERN (insn
);
1034 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1035 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1036 asmop
= SET_SRC (body
);
1037 else if (GET_CODE (body
) == ASM_OPERANDS
)
1039 else if (GET_CODE (body
) == PARALLEL
1040 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1041 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1042 else if (GET_CODE (body
) == PARALLEL
1043 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1044 asmop
= XVECEXP (body
, 0, 0);
1046 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1047 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1049 warning_with_file_and_line (filename
, line
, s
, v
, v2
);
1052 /* These functions issue either warnings or errors depending on
1053 -pedantic-errors. */
1058 int v
; /* @@also used as pointer */
1061 if (flag_pedantic_errors
)
1068 pedwarn_with_decl (decl
, s
, v
)
1073 if (flag_pedantic_errors
)
1074 error_with_decl (decl
, s
, v
);
1076 warning_with_decl (decl
, s
, v
);
1080 pedwarn_with_file_and_line (file
, line
, s
, v
, v2
)
1087 if (flag_pedantic_errors
)
1088 error_with_file_and_line (file
, line
, s
, v
, v2
);
1090 warning_with_file_and_line (file
, line
, s
, v
, v2
);
1093 /* Apologize for not implementing some feature.
1094 S, V, and V2 are a string and args for `printf'. */
1103 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1105 fprintf (stderr
, "%s: ", progname
);
1107 fprintf (stderr
, "sorry, not implemented: ");
1108 fprintf (stderr
, s
, v
, v2
);
1109 fprintf (stderr
, "\n");
1112 /* Apologize for not implementing some feature, then quit.
1113 S, V, and V2 are a string and args for `printf'. */
1116 really_sorry (s
, v
, v2
)
1121 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1123 fprintf (stderr
, "c++: ");
1125 fprintf (stderr
, "sorry, not implemented: ");
1126 fprintf (stderr
, s
, v
, v2
);
1127 fatal (" (fatal)\n");
1130 /* More 'friendly' abort that prints the line and file.
1131 config.h can #define abort fancy_abort if you like that sort of thing.
1133 I don't think this is actually a good idea.
1134 Other sorts of crashes will look a certain way.
1135 It is a good thing if crashes from calling abort look the same way.
1141 fatal ("internal gcc abort");
1144 /* This calls abort and is used to avoid problems when abort if a macro.
1145 It is used when we need to pass the address of abort. */
1153 /* When `malloc.c' is compiled with `rcheck' defined,
1154 it calls this function to report clobberage. */
1162 /* Same as `malloc' but report error if no memory available. */
1168 register int value
= (int) malloc (size
);
1170 fatal ("virtual memory exhausted");
1174 /* Same as `realloc' but report error if no memory available. */
1177 xrealloc (ptr
, size
)
1181 int result
= realloc (ptr
, size
);
1183 fatal ("virtual memory exhausted");
1187 /* Return the logarithm of X, base 2, considering X unsigned,
1188 if X is a power of 2. Otherwise, returns -1. */
1192 register unsigned int x
;
1194 register int log
= 0;
1195 /* Test for 0 or a power of 2. */
1196 if (x
== 0 || x
!= (x
& -x
))
1198 while ((x
>>= 1) != 0)
1203 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1204 If X is 0, return -1. */
1208 register unsigned int x
;
1210 register int log
= -1;
1218 jmp_buf float_handler
;
1220 /* Specify where to longjmp to when a floating arithmetic error happens.
1221 If HANDLER is 0, it means don't handle the errors any more. */
1224 set_float_handler (handler
)
1227 float_handled
= (handler
!= 0);
1229 bcopy (handler
, float_handler
, sizeof (float_handler
));
1232 /* Signals actually come here. */
1235 float_signal (signo
)
1236 /* If this is missing, some compilers complain. */
1239 if (float_handled
== 0)
1241 #if defined (USG) || defined (hpux)
1242 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1245 signal (SIGFPE
, float_signal
);
1246 longjmp (float_handler
, 1);
1249 /* Handler for SIGPIPE. */
1253 /* If this is missing, some compilers complain. */
1256 fatal ("output pipe has been closed");
1259 /* Strip off a legitimate source ending from the input string NAME of
1263 strip_off_ending (name
, len
)
1267 if (len
> 2 && ! strcmp (".c", name
+ len
- 2))
1269 else if (len
> 2 && ! strcmp (".m", name
+ len
- 2))
1271 else if (len
> 2 && ! strcmp (".i", name
+ len
- 2))
1273 else if (len
> 3 && ! strcmp (".ii", name
+ len
- 3))
1275 else if (len
> 3 && ! strcmp (".co", name
+ len
- 3))
1277 else if (len
> 3 && ! strcmp (".cc", name
+ len
- 3))
1279 else if (len
> 2 && ! strcmp (".C", name
+ len
- 2))
1281 else if (len
> 4 && ! strcmp (".cxx", name
+ len
- 4))
1283 else if (len
> 2 && ! strcmp (".f", name
+ len
- 2))
1285 else if (len
> 4 && ! strcmp (".ada", name
+ len
- 4))
1289 /* Output a file name in the form wanted by System V. */
1292 output_file_directive (asm_file
, input_name
)
1296 int len
= strlen (input_name
);
1297 char *na
= input_name
+ len
;
1299 /* NA gets INPUT_NAME sans directory names. */
1300 while (na
> input_name
)
1307 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1308 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
1310 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1311 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
1313 fprintf (asm_file
, "\t.file\t\"%s\"\n", na
);
1318 /* Compile an entire file of output from cpp, named NAME.
1319 Write a file of assembly output and various debugging dumps. */
1327 int dump_base_name_length
;
1329 int name_specified
= name
!= 0;
1331 if (dump_base_name
== 0)
1332 dump_base_name
= name
? name
: "gccdump";
1333 dump_base_name_length
= strlen (dump_base_name
);
1337 integration_time
= 0;
1345 local_alloc_time
= 0;
1346 global_alloc_time
= 0;
1349 shorten_branch_time
= 0;
1355 /* Open input file. */
1357 if (name
== 0 || !strcmp (name
, "-"))
1363 finput
= fopen (name
, "r");
1365 pfatal_with_name (name
);
1367 #ifdef IO_BUFFER_SIZE
1368 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
1371 /* Initialize data in various passes. */
1377 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
1378 || debug_info_level
== DINFO_LEVEL_VERBOSE
);
1379 init_decl_processing ();
1386 if (flag_caller_saves
)
1387 init_caller_save ();
1389 /* If auxiliary info generation is desired, open the output file.
1390 This goes in the same directory as the source file--unlike
1391 all the other output files. */
1392 if (flag_gen_aux_info
)
1394 aux_info_file
= fopen (aux_info_file_name
, "w");
1395 if (aux_info_file
== 0)
1396 pfatal_with_name (aux_info_file_name
);
1399 /* If rtl dump desired, open the output file. */
1402 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1403 strcpy (dumpname
, dump_base_name
);
1404 strcat (dumpname
, ".rtl");
1405 rtl_dump_file
= fopen (dumpname
, "w");
1406 if (rtl_dump_file
== 0)
1407 pfatal_with_name (dumpname
);
1410 /* If jump_opt dump desired, open the output file. */
1413 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1414 strcpy (dumpname
, dump_base_name
);
1415 strcat (dumpname
, ".jump");
1416 jump_opt_dump_file
= fopen (dumpname
, "w");
1417 if (jump_opt_dump_file
== 0)
1418 pfatal_with_name (dumpname
);
1421 /* If cse dump desired, open the output file. */
1424 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1425 strcpy (dumpname
, dump_base_name
);
1426 strcat (dumpname
, ".cse");
1427 cse_dump_file
= fopen (dumpname
, "w");
1428 if (cse_dump_file
== 0)
1429 pfatal_with_name (dumpname
);
1432 /* If loop dump desired, open the output file. */
1435 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1436 strcpy (dumpname
, dump_base_name
);
1437 strcat (dumpname
, ".loop");
1438 loop_dump_file
= fopen (dumpname
, "w");
1439 if (loop_dump_file
== 0)
1440 pfatal_with_name (dumpname
);
1443 /* If cse2 dump desired, open the output file. */
1446 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1447 strcpy (dumpname
, dump_base_name
);
1448 strcat (dumpname
, ".cse2");
1449 cse2_dump_file
= fopen (dumpname
, "w");
1450 if (cse2_dump_file
== 0)
1451 pfatal_with_name (dumpname
);
1454 /* If flow dump desired, open the output file. */
1457 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1458 strcpy (dumpname
, dump_base_name
);
1459 strcat (dumpname
, ".flow");
1460 flow_dump_file
= fopen (dumpname
, "w");
1461 if (flow_dump_file
== 0)
1462 pfatal_with_name (dumpname
);
1465 /* If combine dump desired, open the output file. */
1468 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1469 strcpy (dumpname
, dump_base_name
);
1470 strcat (dumpname
, ".combine");
1471 combine_dump_file
= fopen (dumpname
, "w");
1472 if (combine_dump_file
== 0)
1473 pfatal_with_name (dumpname
);
1476 /* If scheduling dump desired, open the output file. */
1479 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1480 strcpy (dumpname
, dump_base_name
);
1481 strcat (dumpname
, ".sched");
1482 sched_dump_file
= fopen (dumpname
, "w");
1483 if (sched_dump_file
== 0)
1484 pfatal_with_name (dumpname
);
1487 /* If local_reg dump desired, open the output file. */
1490 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1491 strcpy (dumpname
, dump_base_name
);
1492 strcat (dumpname
, ".lreg");
1493 local_reg_dump_file
= fopen (dumpname
, "w");
1494 if (local_reg_dump_file
== 0)
1495 pfatal_with_name (dumpname
);
1498 /* If global_reg dump desired, open the output file. */
1499 if (global_reg_dump
)
1501 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1502 strcpy (dumpname
, dump_base_name
);
1503 strcat (dumpname
, ".greg");
1504 global_reg_dump_file
= fopen (dumpname
, "w");
1505 if (global_reg_dump_file
== 0)
1506 pfatal_with_name (dumpname
);
1509 /* If 2nd scheduling dump desired, open the output file. */
1512 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 8);
1513 strcpy (dumpname
, dump_base_name
);
1514 strcat (dumpname
, ".sched2");
1515 sched2_dump_file
= fopen (dumpname
, "w");
1516 if (sched2_dump_file
== 0)
1517 pfatal_with_name (dumpname
);
1520 /* If jump2_opt dump desired, open the output file. */
1523 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1524 strcpy (dumpname
, dump_base_name
);
1525 strcat (dumpname
, ".jump2");
1526 jump2_opt_dump_file
= fopen (dumpname
, "w");
1527 if (jump2_opt_dump_file
== 0)
1528 pfatal_with_name (dumpname
);
1531 /* If dbr_sched dump desired, open the output file. */
1534 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1535 strcpy (dumpname
, dump_base_name
);
1536 strcat (dumpname
, ".dbr");
1537 dbr_sched_dump_file
= fopen (dumpname
, "w");
1538 if (dbr_sched_dump_file
== 0)
1539 pfatal_with_name (dumpname
);
1544 /* If stack_reg dump desired, open the output file. */
1547 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1548 strcpy (dumpname
, dump_base_name
);
1549 strcat (dumpname
, ".stack");
1550 stack_reg_dump_file
= fopen (dumpname
, "w");
1551 if (stack_reg_dump_file
== 0)
1552 pfatal_with_name (dumpname
);
1557 /* Open assembler code output file. */
1559 if (! name_specified
&& asm_file_name
== 0)
1560 asm_out_file
= stdout
;
1563 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1564 int len
= strlen (dump_base_name
);
1565 strcpy (dumpname
, dump_base_name
);
1566 strip_off_ending (dumpname
, len
);
1567 strcat (dumpname
, ".s");
1568 if (asm_file_name
== 0)
1570 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
1571 strcpy (asm_file_name
, dumpname
);
1573 if (!strcmp (asm_file_name
, "-"))
1574 asm_out_file
= stdout
;
1576 asm_out_file
= fopen (asm_file_name
, "w");
1577 if (asm_out_file
== 0)
1578 pfatal_with_name (asm_file_name
);
1581 #ifdef IO_BUFFER_SIZE
1582 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
1583 _IOFBF
, IO_BUFFER_SIZE
);
1586 input_filename
= name
;
1588 /* Perform language-specific initialization.
1589 This may set main_input_filename. */
1592 /* If the input doesn't start with a #line, use the input name
1593 as the official input file name. */
1594 if (main_input_filename
== 0)
1595 main_input_filename
= name
;
1597 /* Put an entry on the input file stack for the main input file. */
1599 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
1600 input_file_stack
->next
= 0;
1601 input_file_stack
->name
= input_filename
;
1603 ASM_FILE_START (asm_out_file
);
1605 /* Output something to inform GDB that this compilation was by GCC. */
1606 #ifndef ASM_IDENTIFY_GCC
1607 fprintf (asm_out_file
, "gcc2_compiled.:\n");
1609 ASM_IDENTIFY_GCC (asm_out_file
);
1611 /* Don't let the first function fall at the same address
1612 as gcc_compiled., if profiling. */
1613 if (profile_flag
|| profile_block_flag
)
1614 assemble_zeros (UNITS_PER_WORD
);
1616 /* If dbx symbol table desired, initialize writing it
1617 and output the predefined types. */
1618 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1619 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1620 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
1623 #ifdef SDB_DEBUGGING_INFO
1624 if (write_symbols
== SDB_DEBUG
)
1625 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
1628 #ifdef DWARF_DEBUGGING_INFO
1629 if (write_symbols
== DWARF_DEBUG
)
1630 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
1633 /* Initialize yet another pass. */
1635 init_final (main_input_filename
);
1637 start_time
= get_run_time ();
1639 /* Call the parser, which parses the entire file
1640 (calling rest_of_compilation for each function). */
1642 if (yyparse () != 0)
1643 if (errorcount
== 0)
1644 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
1646 /* Compilation is now finished except for writing
1647 what's left of the symbol table output. */
1649 parse_time
+= get_run_time () - start_time
;
1651 parse_time
-= integration_time
;
1652 parse_time
-= varconst_time
;
1654 globals
= getdecls ();
1656 /* Really define vars that have had only a tentative definition.
1657 Really output inline functions that must actually be callable
1658 and have not been output so far. */
1661 int len
= list_length (globals
);
1662 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
1666 /* Process the decls in reverse order--earliest first.
1667 Put them into VEC from back to front, then take out from front. */
1669 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
1670 vec
[len
- i
- 1] = decl
;
1672 for (i
= 0; i
< len
; i
++)
1675 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
1676 && ! TREE_ASM_WRITTEN (decl
))
1678 /* Don't write out static consts, unless we used them.
1679 (This used to write them out only if the address was
1680 taken, but that was wrong; if the variable was simply
1681 referred to, it still needs to exist or else it will
1682 be undefined in the linker.) */
1683 if (! TREE_READONLY (decl
)
1684 || TREE_PUBLIC (decl
)
1686 || TREE_ADDRESSABLE (decl
)
1687 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1688 rest_of_decl_compilation (decl
, 0, 1, 1);
1690 /* Cancel the RTL for this decl so that, if debugging info
1691 output for global variables is still to come,
1692 this one will be omitted. */
1693 DECL_RTL (decl
) = NULL
;
1696 if (TREE_CODE (decl
) == FUNCTION_DECL
1697 && ! TREE_ASM_WRITTEN (decl
)
1698 && DECL_INITIAL (decl
) != 0
1699 && (TREE_ADDRESSABLE (decl
)
1700 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1701 && ! TREE_EXTERNAL (decl
))
1702 output_inline_function (decl
);
1704 /* Warn about any function
1705 declared static but not defined.
1706 We don't warn about variables,
1707 because many programs have static variables
1708 that exist only to get some text into the object file. */
1711 || (DECL_NAME (decl
) && TREE_USED (DECL_NAME (decl
))))
1712 && TREE_CODE (decl
) == FUNCTION_DECL
1713 && DECL_INITIAL (decl
) == 0
1714 && TREE_EXTERNAL (decl
)
1715 && ! TREE_PUBLIC (decl
))
1716 warning_with_decl (decl
, "`%s' declared `static' but never defined");
1717 /* Warn about static fns or vars defined but not used,
1718 but not about inline functions
1719 since unused inline statics is normal practice. */
1721 && (TREE_CODE (decl
) == FUNCTION_DECL
1722 || TREE_CODE (decl
) == VAR_DECL
)
1723 && ! TREE_EXTERNAL (decl
)
1724 && ! TREE_PUBLIC (decl
)
1725 && ! TREE_USED (decl
)
1726 && ! TREE_INLINE (decl
)
1727 /* The TREE_USED bit for file-scope decls
1728 is kept in the identifier, to handle multiple
1729 external decls in different scopes. */
1730 && ! TREE_USED (DECL_NAME (decl
)))
1731 warning_with_decl (decl
, "`%s' defined but not used");
1733 #ifdef SDB_DEBUGGING_INFO
1734 /* The COFF linker can move initialized global vars to the end.
1735 And that can screw up the symbol ordering.
1736 By putting the symbols in that order to begin with,
1737 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
1738 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
1739 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
1740 && DECL_RTL (decl
) != 0)
1741 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1743 /* Output COFF information for non-global
1744 file-scope initialized variables. */
1745 if (write_symbols
== SDB_DEBUG
1746 && TREE_CODE (decl
) == VAR_DECL
1747 && DECL_INITIAL (decl
)
1748 && DECL_RTL (decl
) != 0
1749 && GET_CODE (DECL_RTL (decl
)) == MEM
)
1750 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
1751 #endif /* SDB_DEBUGGING_INFO */
1752 #ifdef DWARF_DEBUGGING_INFO
1753 /* Output DWARF information for file-scope tentative data object
1754 declarations, file-scope (extern) function declarations (which
1755 had no corresponding body) and file-scope tagged type declarations
1756 and definitions which have not yet been forced out. */
1758 if (write_symbols
== DWARF_DEBUG
1759 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
1760 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
1765 /* Do dbx symbols */
1766 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1767 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1768 TIMEVAR (symout_time
,
1770 dbxout_finish (asm_out_file
, main_input_filename
);
1774 #ifdef DWARF_DEBUGGING_INFO
1775 if (write_symbols
== DWARF_DEBUG
)
1776 TIMEVAR (symout_time
,
1782 /* Output some stuff at end of file if nec. */
1784 end_final (main_input_filename
);
1787 ASM_FILE_END (asm_out_file
);
1790 after_finish_compilation
:
1792 /* Language-specific end of compilation actions. */
1796 /* Close the dump files. */
1798 if (flag_gen_aux_info
)
1800 fclose (aux_info_file
);
1802 unlink (aux_info_file_name
);
1806 fclose (rtl_dump_file
);
1809 fclose (jump_opt_dump_file
);
1812 fclose (cse_dump_file
);
1815 fclose (loop_dump_file
);
1818 fclose (cse2_dump_file
);
1821 fclose (flow_dump_file
);
1825 dump_combine_total_stats (combine_dump_file
);
1826 fclose (combine_dump_file
);
1830 fclose (sched_dump_file
);
1833 fclose (local_reg_dump_file
);
1835 if (global_reg_dump
)
1836 fclose (global_reg_dump_file
);
1839 fclose (sched2_dump_file
);
1842 fclose (jump2_opt_dump_file
);
1845 fclose (dbr_sched_dump_file
);
1849 fclose (stack_reg_dump_file
);
1852 /* Close non-debugging input and output files. Take special care to note
1853 whether fclose returns an error, since the pages might still be on the
1854 buffer chain while the file is open. */
1857 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
1858 fatal_io_error (asm_file_name
);
1860 /* Print the times. */
1864 fprintf (stderr
,"\n");
1865 print_time ("parse", parse_time
);
1866 print_time ("integration", integration_time
);
1867 print_time ("jump", jump_time
);
1868 print_time ("cse", cse_time
);
1869 print_time ("loop", loop_time
);
1870 print_time ("cse2", cse2_time
);
1871 print_time ("flow", flow_time
);
1872 print_time ("combine", combine_time
);
1873 print_time ("sched", sched_time
);
1874 print_time ("local-alloc", local_alloc_time
);
1875 print_time ("global-alloc", global_alloc_time
);
1876 print_time ("sched2", sched2_time
);
1877 print_time ("dbranch", dbr_sched_time
);
1878 print_time ("shorten-branch", shorten_branch_time
);
1879 print_time ("stack-reg", stack_reg_time
);
1880 print_time ("final", final_time
);
1881 print_time ("varconst", varconst_time
);
1882 print_time ("symout", symout_time
);
1883 print_time ("dump", dump_time
);
1887 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
1888 and TYPE_DECL nodes.
1890 This does nothing for local (non-static) variables.
1891 Otherwise, it sets up the RTL and outputs any assembler code
1892 (label definition, storage allocation and initialization).
1894 DECL is the declaration. If ASMSPEC is nonzero, it specifies
1895 the assembler symbol name to be used. TOP_LEVEL is nonzero
1896 if this declaration is not within a function. */
1899 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
1905 /* Declarations of variables, and of functions defined elsewhere. */
1907 /* Forward declarations for nested functions are not "external",
1908 but we need to treat them as if they were. */
1909 if (TREE_STATIC (decl
) || TREE_EXTERNAL (decl
)
1910 || TREE_CODE (decl
) == FUNCTION_DECL
)
1911 TIMEVAR (varconst_time
,
1913 make_decl_rtl (decl
, asmspec
, top_level
);
1914 /* For a user-invisible decl that should be replaced
1915 by its value when used, don't output anything. */
1916 if (! (TREE_CODE (decl
) == VAR_DECL
1917 && DECL_IGNORED_P (decl
) && TREE_READONLY (decl
)
1918 && DECL_INITIAL (decl
) != 0))
1919 /* Don't output anything
1920 when a tentative file-scope definition is seen.
1921 But at end of compilation, do output code for them. */
1922 if (! (! at_end
&& top_level
1923 && (DECL_INITIAL (decl
) == 0
1924 || DECL_INITIAL (decl
) == error_mark_node
1925 || DECL_IGNORED_P (decl
))))
1926 assemble_variable (decl
, top_level
, at_end
);
1928 else if (TREE_REGDECL (decl
) && asmspec
!= 0)
1930 if (decode_reg_name (asmspec
) >= 0)
1932 DECL_RTL (decl
) = 0;
1933 make_decl_rtl (decl
, asmspec
, top_level
);
1936 error ("invalid register name `%s' for register variable", asmspec
);
1938 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1939 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1940 && TREE_CODE (decl
) == TYPE_DECL
)
1941 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
1943 #ifdef SDB_DEBUGGING_INFO
1944 else if (write_symbols
== SDB_DEBUG
&& top_level
1945 && TREE_CODE (decl
) == TYPE_DECL
)
1946 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1950 /* Called after finishing a record, union or enumeral type. */
1953 rest_of_type_compilation (type
, toplev
)
1957 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1958 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1959 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1961 #ifdef SDB_DEBUGGING_INFO
1962 if (write_symbols
== SDB_DEBUG
)
1963 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1967 /* This is called from finish_function (within yyparse)
1968 after each top-level definition is parsed.
1969 It is supposed to compile that function or variable
1970 and output the assembler code for it.
1971 After we return, the tree storage is freed. */
1974 rest_of_compilation (decl
)
1978 int start_time
= get_run_time ();
1980 /* Nonzero if we have saved the original DECL_INITIAL of the function,
1981 to be restored after we finish compiling the function
1982 (for use when compiling inline calls to this function). */
1983 tree saved_block_tree
= 0;
1986 /* If we are reconsidering an inline function
1987 at the end of compilation, skip the stuff for making it inline. */
1989 if (DECL_SAVED_INSNS (decl
) == 0)
1991 int specd
= TREE_INLINE (decl
);
1994 /* If requested, consider whether to make this function inline. */
1995 if (specd
|| flag_inline_functions
)
1996 TIMEVAR (integration_time
,
1998 lose
= function_cannot_inline_p (decl
);
2001 if (warn_inline
&& specd
)
2002 warning_with_decl (decl
, lose
);
2003 TREE_INLINE (decl
) = 0;
2006 TREE_INLINE (decl
) = 1;
2009 insns
= get_insns ();
2011 /* Dump the rtl code if we are dumping rtl. */
2016 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
2017 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2018 if (DECL_SAVED_INSNS (decl
))
2019 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
2020 print_rtl (rtl_dump_file
, insns
);
2021 fflush (rtl_dump_file
);
2024 /* If function is inline, and we don't yet know whether to
2025 compile it by itself, defer decision till end of compilation.
2026 finish_compilation will call rest_of_compilation again
2027 for those functions that need to be output. */
2029 if (TREE_INLINE (decl
)
2030 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
2031 && ! flag_keep_inline_functions
)
2032 || TREE_EXTERNAL (decl
)))
2034 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
2035 goto exit_rest_of_compilation
;
2038 /* If we have to compile the function now, save its rtl
2039 so that its compilation will not affect what others get. */
2040 if (TREE_INLINE (decl
))
2042 saved_block_tree
= DECL_INITIAL (decl
);
2043 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
2047 /* Suppress warnings for unused static functions
2048 defined (not just declared) in system headers. */
2049 if (in_system_header
&& TREE_STATIC (decl
) && !TREE_INLINE (decl
))
2050 TREE_USED (decl
) = 1;
2052 TREE_ASM_WRITTEN (decl
) = 1;
2054 /* Now that integrate will no longer see our rtl, we need not distinguish
2055 between the return value of this function and the return value of called
2057 rtx_equal_function_value_matters
= 0;
2059 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
2060 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
2062 goto exit_rest_of_compilation
;
2065 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2066 Note that that may have been done above, in save_for_inline_copying.
2067 The call to resume_temporary_allocation near the end of this function
2068 goes back to the usual state of affairs. */
2070 rtl_in_current_obstack ();
2073 /* If we are doing position-independent code generation, now
2074 is the time to output special prologues and epilogues.
2075 We do not want to do this earlier, because it just clutters
2076 up inline functions with meaningless insns. */
2081 insns
= get_insns ();
2083 /* Copy any shared structure that should not be shared. */
2085 unshare_all_rtl (insns
);
2087 /* Instantiate all virtual registers. */
2089 instantiate_virtual_regs (current_function_decl
, get_insns ());
2091 /* See if we have allocated stack slots that are not directly addressable.
2092 If so, scan all the insns and create explicit address computation
2093 for all references to such slots. */
2094 /* fixup_stack_slots (); */
2096 /* Do jump optimization the first time, if -opt.
2097 Also do it if -W, but in that case it doesn't change the rtl code,
2098 it only computes whether control can drop off the end of the function. */
2100 if (optimize
> 0 || extra_warnings
|| warn_return_type
2101 /* If function is `volatile', we should warn if it tries to return. */
2102 || TREE_THIS_VOLATILE (decl
))
2104 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
2105 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
2108 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
2109 if (rtl_dump_and_exit
|| flag_syntax_only
)
2110 goto exit_rest_of_compilation
;
2112 /* Dump rtl code after jump, if we are doing that. */
2117 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
2118 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2119 print_rtl (jump_opt_dump_file
, insns
);
2120 fflush (jump_opt_dump_file
);
2123 /* Perform common subexpression elimination.
2124 Nonzero value from `cse_main' means that jumps were simplified
2125 and some code may now be unreachable, so do
2126 jump optimization again. */
2131 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
2132 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2137 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
2139 if (flag_thread_jumps
)
2140 /* Hacks by tiemann & kenner. */
2141 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2143 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
2145 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
2148 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2151 /* Dump rtl code after cse, if we are doing that. */
2156 print_rtl (cse_dump_file
, insns
);
2157 fflush (cse_dump_file
);
2163 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
2164 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2167 /* Move constant computations out of loops. */
2173 loop_optimize (insns
, loop_dump
? loop_dump_file
: 0);
2177 /* Dump rtl code after loop opt, if we are doing that. */
2182 print_rtl (loop_dump_file
, insns
);
2183 fflush (loop_dump_file
);
2189 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
2190 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2193 if (optimize
> 0 && flag_rerun_cse_after_loop
)
2195 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
2197 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
2198 1, cse2_dump_file
));
2200 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2203 if (optimize
> 0 && flag_thread_jumps
)
2204 /* This pass of jump threading straightens out code
2205 that was kinked by loop optimization. */
2206 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2208 /* Dump rtl code after cse, if we are doing that. */
2213 print_rtl (cse2_dump_file
, insns
);
2214 fflush (cse2_dump_file
);
2217 /* We are no longer anticipating cse in this function, at least. */
2219 cse_not_expected
= 1;
2221 /* Now we choose between stupid (pcc-like) register allocation
2222 (if we got the -noreg switch and not -opt)
2223 and smart register allocation. */
2225 if (optimize
> 0) /* Stupid allocation probably won't work */
2226 obey_regdecls
= 0; /* if optimizations being done. */
2230 /* Print function header into flow dump now
2231 because doing the flow analysis makes some of the dump. */
2236 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
2237 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2244 regclass (insns
, max_reg_num ());
2245 stupid_life_analysis (insns
, max_reg_num (),
2251 /* Do control and data flow analysis,
2252 and write some of the results to dump file. */
2254 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
2256 if (warn_uninitialized
)
2258 uninitialized_vars_warning (DECL_INITIAL (decl
));
2259 setjmp_args_warning ();
2263 /* Dump rtl after flow analysis. */
2268 print_rtl (flow_dump_file
, insns
);
2269 fflush (flow_dump_file
);
2272 /* If -opt, try combining insns through substitution. */
2275 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
2277 /* Dump rtl code after insn combination. */
2282 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
2283 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2284 dump_combine_stats (combine_dump_file
);
2285 print_rtl (combine_dump_file
, insns
);
2286 fflush (combine_dump_file
);
2289 /* Print function header into sched dump now
2290 because doing the sched analysis makes some of the dump. */
2295 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
2296 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2299 if (optimize
> 0 && flag_schedule_insns
)
2301 /* Do control and data sched analysis,
2302 and write some of the results to dump file. */
2304 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
2307 /* Dump rtl after instruction scheduling. */
2312 print_rtl (sched_dump_file
, insns
);
2313 fflush (sched_dump_file
);
2316 /* Unless we did stupid register allocation,
2317 allocate pseudo-regs that are used only within 1 basic block. */
2320 TIMEVAR (local_alloc_time
,
2322 regclass (insns
, max_reg_num ());
2326 /* Dump rtl code after allocating regs within basic blocks. */
2331 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
2332 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2333 dump_flow_info (local_reg_dump_file
);
2334 dump_local_alloc (local_reg_dump_file
);
2335 print_rtl (local_reg_dump_file
, insns
);
2336 fflush (local_reg_dump_file
);
2339 if (global_reg_dump
)
2341 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
2342 IDENTIFIER_POINTER (DECL_NAME (decl
))));
2344 /* Unless we did stupid register allocation,
2345 allocate remaining pseudo-regs, then do the reload pass
2346 fixing up any insns that are invalid. */
2348 TIMEVAR (global_alloc_time
,
2351 failure
= global_alloc (global_reg_dump
? global_reg_dump_file
: 0);
2353 failure
= reload (insns
, 0,
2354 global_reg_dump
? global_reg_dump_file
: 0);
2357 if (global_reg_dump
)
2360 dump_global_regs (global_reg_dump_file
);
2361 print_rtl (global_reg_dump_file
, insns
);
2362 fflush (global_reg_dump_file
);
2366 goto exit_rest_of_compilation
;
2368 reload_completed
= 1;
2370 if (optimize
> 0 && flag_schedule_insns_after_reload
)
2375 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
2376 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2379 /* Do control and data sched analysis again,
2380 and write some more of the results to dump file. */
2382 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
2384 /* Dump rtl after post-reorder instruction scheduling. */
2389 print_rtl (sched2_dump_file
, insns
);
2390 fflush (sched2_dump_file
);
2394 #ifdef LEAF_REGISTERS
2396 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
2400 /* One more attempt to remove jumps to .+1
2401 left by dead-store-elimination.
2402 Also do cross-jumping this time
2403 and delete no-op move insns. */
2407 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
2410 /* Dump rtl code after jump, if we are doing that. */
2415 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
2416 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2417 print_rtl (jump2_opt_dump_file
, insns
);
2418 fflush (jump2_opt_dump_file
);
2421 /* If a scheduling pass for delayed branches is to be done,
2422 call the scheduling code. */
2425 if (optimize
> 0 && flag_delayed_branch
)
2427 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
2432 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
2433 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2434 print_rtl (dbr_sched_dump_file
, insns
);
2435 fflush (dbr_sched_dump_file
);
2442 /* Shorten branches. */
2443 TIMEVAR (shorten_branch_time
,
2445 shorten_branches (get_insns ());
2449 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
2454 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
2455 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2456 print_rtl (stack_reg_dump_file
, insns
);
2457 fflush (stack_reg_dump_file
);
2462 /* Now turn the rtl into assembler code. */
2464 TIMEVAR (final_time
,
2469 /* Get the function's name, as described by its RTL.
2470 This may be different from the DECL_NAME name used
2471 in the source file. */
2473 x
= DECL_RTL (decl
);
2474 if (GET_CODE (x
) != MEM
)
2477 if (GET_CODE (x
) != SYMBOL_REF
)
2479 fnname
= XSTR (x
, 0);
2481 assemble_start_function (decl
, fnname
);
2482 final_start_function (insns
, asm_out_file
, optimize
);
2483 final (insns
, asm_out_file
, optimize
, 0);
2484 final_end_function (insns
, asm_out_file
, optimize
);
2485 assemble_end_function (decl
, fnname
);
2486 fflush (asm_out_file
);
2489 /* Write DBX symbols if requested */
2491 /* Note that for those inline functions where we don't initially
2492 know for certain that we will be generating an out-of-line copy,
2493 the first invocation of this routine (rest_of_compilation) will
2494 skip over this code by doing a `goto exit_rest_of_compilation;'.
2495 Later on, finish_compilation will call rest_of_compilation again
2496 for those inline functions that need to have out-of-line copies
2497 generated. During that call, we *will* be routed past here. */
2499 #ifdef DBX_DEBUGGING_INFO
2500 if (write_symbols
== DBX_DEBUG
)
2501 TIMEVAR (symout_time
, dbxout_function (decl
));
2504 #ifdef DWARF_DEBUGGING_INFO
2505 if (write_symbols
== DWARF_DEBUG
)
2506 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2509 exit_rest_of_compilation
:
2511 /* In case the function was not output,
2512 don't leave any temporary anonymous types
2513 queued up for sdb output. */
2514 #ifdef SDB_DEBUGGING_INFO
2515 if (write_symbols
== SDB_DEBUG
)
2519 /* Put back the tree of subblocks from before we copied it.
2520 Code generation and the output of debugging info may have modified
2521 the copy, but the original is unchanged. */
2523 if (saved_block_tree
!= 0)
2524 DECL_INITIAL (decl
) = saved_block_tree
;
2526 reload_completed
= 0;
2528 /* Clear out the real_constant_chain before some of the rtx's
2529 it runs through become garbage. */
2531 clear_const_double_mem ();
2533 /* Cancel the effect of rtl_in_current_obstack. */
2535 resume_temporary_allocation ();
2537 /* The parsing time is all the time spent in yyparse
2538 *except* what is spent in this function. */
2540 parse_time
-= get_run_time () - start_time
;
2543 /* Entry point of cc1/c++. Decode command args, then call compile_file.
2544 Exit code is 35 if can't open files, 34 if fatal error,
2545 33 if had nonfatal errors, else success. */
2548 main (argc
, argv
, envp
)
2555 int flag_print_mem
= 0;
2556 int version_flag
= 0;
2559 /* save in case md file wants to emit args as a comment. */
2563 p
= argv
[0] + strlen (argv
[0]);
2564 while (p
!= argv
[0] && p
[-1] != '/') --p
;
2568 /* Get rid of any avoidable limit on stack size. */
2572 /* Set the stack limit huge so that alloca does not fail. */
2573 getrlimit (RLIMIT_STACK
, &rlim
);
2574 rlim
.rlim_cur
= rlim
.rlim_max
;
2575 setrlimit (RLIMIT_STACK
, &rlim
);
2577 #endif /* RLIMIT_STACK */
2579 signal (SIGFPE
, float_signal
);
2581 signal (SIGPIPE
, pipe_closed
);
2583 decl_printable_name
= decl_name
;
2584 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
2586 /* Initialize whether `char' is signed. */
2587 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
2588 #ifdef DEFAULT_SHORT_ENUMS
2589 /* Initialize how much space enums occupy, by default. */
2590 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
2593 /* Scan to see what optimization level has been specified. That will
2594 determine the default value of many flags. */
2595 for (i
= 1; i
< argc
; i
++)
2597 if (!strcmp (argv
[i
], "-O"))
2601 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
2603 /* Handle -O2, -O3, -O69, ... */
2604 char *p
= &argv
[i
][2];
2608 if (! (c
>= '0' && c
<= '9'))
2611 optimize
= atoi (&argv
[i
][2]);
2615 obey_regdecls
= (optimize
== 0);
2624 flag_thread_jumps
= 1;
2626 flag_delayed_branch
= 1;
2632 flag_cse_follow_jumps
= 1;
2633 flag_cse_skip_blocks
= 1;
2634 flag_expensive_optimizations
= 1;
2635 flag_strength_reduce
= 1;
2636 flag_rerun_cse_after_loop
= 1;
2637 flag_caller_saves
= 1;
2638 #ifdef INSN_SCHEDULING
2639 flag_schedule_insns
= 1;
2640 flag_schedule_insns_after_reload
= 1;
2644 #ifdef OPTIMIZATION_OPTIONS
2645 /* Allow default optimizations to be specified on a per-machine basis. */
2646 OPTIMIZATION_OPTIONS (optimize
);
2649 /* Initialize register usage now so switches may override. */
2653 set_target_switch ("");
2655 for (i
= 1; i
< argc
; i
++)
2657 if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
2659 register char *str
= argv
[i
] + 1;
2664 set_target_switch (&str
[1]);
2665 else if (!strcmp (str
, "dumpbase"))
2667 dump_base_name
= argv
[++i
];
2669 else if (str
[0] == 'd')
2671 register char *p
= &str
[1];
2679 global_reg_dump
= 1;
2685 cse_dump
= 1, cse2_dump
= 1;
2703 global_reg_dump
= 1;
2721 flag_print_asm_name
= 1;
2743 rtl_dump_and_exit
= 1;
2747 else if (str
[0] == 'f')
2750 register char *p
= &str
[1];
2753 /* Some kind of -f option.
2754 P's value is the option sans `-f'.
2755 Search for it in the table of options. */
2758 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
2761 if (!strcmp (p
, f_options
[j
].string
))
2763 *f_options
[j
].variable
= f_options
[j
].on_value
;
2764 /* A goto here would be cleaner,
2765 but breaks the vax pcc. */
2768 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2769 && ! strcmp (p
+3, f_options
[j
].string
))
2771 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
2778 else if (!strncmp (p
, "fixed-", 6))
2779 fix_register (&p
[6], 1, 1);
2780 else if (!strncmp (p
, "call-used-", 10))
2781 fix_register (&p
[10], 0, 1);
2782 else if (!strncmp (p
, "call-saved-", 11))
2783 fix_register (&p
[11], 0, 0);
2784 else if (! lang_decode_option (argv
[i
]))
2785 error ("Invalid option `%s'", argv
[i
]);
2787 else if (str
[0] == 'O')
2789 register char *p
= str
+1;
2790 while (*p
&& *p
>= '0' && *p
<= '9')
2795 error ("Invalid option `%s'", argv
[i
]);
2797 else if (!strcmp (str
, "pedantic"))
2799 else if (!strcmp (str
, "pedantic-errors"))
2800 flag_pedantic_errors
= pedantic
= 1;
2801 else if (lang_decode_option (argv
[i
]))
2803 else if (!strcmp (str
, "quiet"))
2805 else if (!strcmp (str
, "version"))
2807 else if (!strcmp (str
, "w"))
2808 inhibit_warnings
= 1;
2809 else if (!strcmp (str
, "W"))
2812 warn_uninitialized
= 1;
2814 else if (str
[0] == 'W')
2817 register char *p
= &str
[1];
2820 /* Some kind of -W option.
2821 P's value is the option sans `-W'.
2822 Search for it in the table of options. */
2825 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
2828 if (!strcmp (p
, W_options
[j
].string
))
2830 *W_options
[j
].variable
= W_options
[j
].on_value
;
2831 /* A goto here would be cleaner,
2832 but breaks the vax pcc. */
2835 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2836 && ! strcmp (p
+3, W_options
[j
].string
))
2838 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
2845 else if (!strncmp (p
, "id-clash-", 9))
2851 if (*endp
>= '0' && *endp
<= '9')
2854 error ("Invalid option `%s'", argv
[i
]);
2857 id_clash_len
= atoi (str
+ 10);
2860 error ("Invalid option `%s'", argv
[i
]);
2862 else if (!strcmp (str
, "p"))
2864 else if (!strcmp (str
, "a"))
2866 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
2867 warning ("`-a' option (basic block profile) not supported");
2869 profile_block_flag
= 1;
2872 else if (str
[0] == 'g')
2879 while (*p
&& (*p
< '0' || *p
> '9'))
2883 while (*q
&& (*q
>= '0' && *q
<= '9'))
2888 level
= 2; /* default debugging info level */
2889 if (*q
|| level
> 3)
2891 warning ("invalid debug level specification in option: `-%s'",
2893 warning ("no debugging information will be generated");
2897 /* If more than one debugging type is supported,
2898 you must define PREFERRED_DEBUGGING_TYPE
2899 to choose a format in a system-dependent way. */
2900 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
2901 + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
2902 #ifdef PREFERRED_DEBUGGING_TYPE
2903 if (!strncmp (str
, "ggdb", len
))
2904 write_symbols
= PREFERRED_DEBUGGING_TYPE
;
2905 #else /* no PREFERRED_DEBUGGING_TYPE */
2906 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
2907 #endif /* no PREFERRED_DEBUGGING_TYPE */
2908 #endif /* More than one debugger format enabled. */
2909 #ifdef DBX_DEBUGGING_INFO
2910 if (write_symbols
!= NO_DEBUG
)
2912 else if (!strncmp (str
, "ggdb", len
))
2913 write_symbols
= DBX_DEBUG
;
2914 else if (!strncmp (str
, "gstabs", len
))
2915 write_symbols
= DBX_DEBUG
;
2917 /* Always enable extensions for -ggdb or -gstabs+,
2918 always disable for -gstabs.
2919 For plain -g, use system-specific default. */
2920 if (write_symbols
== DBX_DEBUG
&& !strncmp (str
, "ggdb", len
)
2922 use_gdb_dbx_extensions
= 1;
2923 else if (write_symbols
== DBX_DEBUG
&& !strcmp (str
, "gstabs+"))
2924 use_gdb_dbx_extensions
= 1;
2925 else if (write_symbols
== DBX_DEBUG
2926 && !strncmp (str
, "gstabs", len
) && len
>= 2)
2927 use_gdb_dbx_extensions
= 0;
2929 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2930 #endif /* DBX_DEBUGGING_INFO */
2931 #ifdef DWARF_DEBUGGING_INFO
2932 if (write_symbols
!= NO_DEBUG
)
2934 else if (!strncmp (str
, "ggdb", len
))
2935 write_symbols
= DWARF_DEBUG
;
2936 /* For orthogonality. */
2937 else if (!strncmp (str
, "gdwarf", len
))
2938 write_symbols
= DWARF_DEBUG
;
2940 #ifdef SDB_DEBUGGING_INFO
2941 if (write_symbols
!= NO_DEBUG
)
2943 else if (!strncmp (str
, "ggdb", len
))
2944 write_symbols
= SDB_DEBUG
;
2945 else if (!strncmp (str
, "gcoff", len
))
2946 write_symbols
= SDB_DEBUG
;
2947 #endif /* SDB_DEBUGGING_INFO */
2948 #ifdef XCOFF_DEBUGGING_INFO
2949 if (write_symbols
!= NO_DEBUG
)
2951 else if (!strncmp (str
, "ggdb", len
))
2952 write_symbols
= XCOFF_DEBUG
;
2953 else if (!strncmp (str
, "gxcoff", len
))
2954 write_symbols
= XCOFF_DEBUG
;
2956 /* Always enable extensions for -ggdb,
2957 always disable for -gxcoff.
2958 For plain -g, use system-specific default. */
2959 if (write_symbols
== XCOFF_DEBUG
&& !strncmp (str
, "ggdb", len
)
2961 use_gdb_dbx_extensions
= 1;
2962 else if (write_symbols
== XCOFF_DEBUG
2963 && !strncmp (str
, "gxcoff", len
) && len
>= 2)
2964 use_gdb_dbx_extensions
= 0;
2966 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2968 if (write_symbols
== NO_DEBUG
)
2969 warning ("`-%s' option not supported on this version of GCC", str
);
2970 else if (level
== 0)
2971 write_symbols
= NO_DEBUG
;
2973 debug_info_level
= (enum debug_info_level
) level
;
2975 else if (!strcmp (str
, "o"))
2977 asm_file_name
= argv
[++i
];
2979 else if (str
[0] == 'G')
2981 g_switch_set
= TRUE
;
2982 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
2984 else if (!strncmp (str
, "aux-info", 8))
2986 flag_gen_aux_info
= 1;
2987 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
2990 error ("Invalid option `%s'", argv
[i
]);
2992 else if (argv
[i
][0] == '+')
2994 if (lang_decode_option (argv
[i
]))
2997 error ("Invalid option `%s'", argv
[i
]);
3003 /* Inlining does not work if not optimizing,
3004 so force it not to be done. */
3011 #ifdef OVERRIDE_OPTIONS
3012 /* Some machines may reject certain combinations of options. */
3016 /* Unrolling all loops implies that standard loop unrolling must also
3018 if (flag_unroll_all_loops
)
3019 flag_unroll_loops
= 1;
3020 /* Loop unrolling requires that strength_reduction be on also. Silently
3021 turn on strength reduction here if it isn't already on. Also, the loop
3022 unrolling code assumes that cse will be run after loop, so that must
3023 be turned on also. */
3024 if (flag_unroll_loops
)
3026 flag_strength_reduce
= 1;
3027 flag_rerun_cse_after_loop
= 1;
3030 /* Warn about options that are not supported on this machine. */
3031 #ifndef INSN_SCHEDULING
3032 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
3033 warning ("instruction scheduling not supported on this target machine");
3036 if (flag_delayed_branch
)
3037 warning ("this target machine does not have delayed branches");
3040 /* If we are in verbose mode, write out the version and maybe all the
3041 option flags in use. */
3044 fprintf (stderr
, "%s version %s", language_string
, version_string
);
3045 #ifdef TARGET_VERSION
3050 #define __VERSION__ "[unknown]"
3052 fprintf (stderr
, " compiled by GNU C version %s.\n", __VERSION__
);
3054 fprintf (stderr
, " compiled by CC.\n");
3057 print_switch_values ();
3060 /* Now that register usage is specified, convert it to HARD_REG_SETs. */
3063 compile_file (filename
);
3069 char *lim
= (char *) sbrk (0);
3071 fprintf (stderr
, "Data size %d.\n",
3072 (int) lim
- (int) &environ
);
3076 system ("ps -l 1>&2");
3079 #endif /* not USG */
3081 #endif /* not VMS */
3082 #endif /* not OS2 */
3085 exit (FATAL_EXIT_CODE
);
3087 exit (FATAL_EXIT_CODE
);
3088 exit (SUCCESS_EXIT_CODE
);
3092 /* Decode -m switches. */
3094 /* Here is a table, controlled by the tm.h file, listing each -m switch
3095 and which bits in `target_switches' it should set or clear.
3096 If VALUE is positive, it is bits to set.
3097 If VALUE is negative, -VALUE is bits to clear.
3098 (The sign bit is not used so there is no confusion.) */
3100 struct {char *name
; int value
;} target_switches
[]
3103 /* This table is similar, but allows the switch to have a value. */
3105 #ifdef TARGET_OPTIONS
3106 struct {char *prefix
; char ** variable
;} target_options
[]
3110 /* Decode the switch -mNAME. */
3113 set_target_switch (name
)
3119 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3120 if (!strcmp (target_switches
[j
].name
, name
))
3122 if (target_switches
[j
].value
< 0)
3123 target_flags
&= ~-target_switches
[j
].value
;
3125 target_flags
|= target_switches
[j
].value
;
3129 #ifdef TARGET_OPTIONS
3131 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
3133 int len
= strlen (target_options
[j
].prefix
);
3134 if (!strncmp (target_options
[j
].prefix
, name
, len
))
3136 *target_options
[j
].variable
= name
+ len
;
3143 error ("Invalid option `%s'", name
);
3146 /* Variable used for communication between the following two routines. */
3148 static int line_position
;
3150 /* Print an option value and adjust the position in the line. */
3153 print_single_switch (type
, name
)
3156 fprintf (stderr
, " %s%s", type
, name
);
3158 line_position
+= strlen (type
) + strlen (name
) + 1;
3160 if (line_position
> 65)
3162 fprintf (stderr
, "\n\t");
3167 /* Print default target switches for -version. */
3170 print_switch_values ()
3174 fprintf (stderr
, "enabled:");
3177 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
3178 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
3179 print_single_switch ("-f", f_options
[j
].string
);
3181 for (j
= 0; j
< sizeof W_options
/ sizeof W_options
[0]; j
++)
3182 if (*W_options
[j
].variable
== W_options
[j
].on_value
)
3183 print_single_switch ("-W", W_options
[j
].string
);
3185 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3186 if (target_switches
[j
].name
[0] != '\0'
3187 && target_switches
[j
].value
> 0
3188 && ((target_switches
[j
].value
& target_flags
)
3189 == target_switches
[j
].value
))
3190 print_single_switch ("-m", target_switches
[j
].name
);
3192 fprintf (stderr
, "\n");