1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92, 93, 1994 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. */
35 #include <sys/types.h>
41 #include <sys/param.h>
42 /* This is for hpux. It is a real screw. They should change hpux. */
44 #include <sys/times.h>
45 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
46 #undef FFS /* Some systems define this in param.h. */
50 #include <sys/resource.h>
56 /* #include "c-tree.h" */
59 #include "insn-attr.h"
62 #ifdef XCOFF_DEBUGGING_INFO
70 /* The extra parameters substantially improve the I/O performance. */
72 VMS_fopen (fname
, type
)
76 if (strcmp (type
, "w") == 0)
77 return fopen (fname
, type
, "mbc=16", "deq=64", "fop=tef", "shr=nil");
78 return fopen (fname
, type
, "mbc=16");
80 #define fopen VMS_fopen
83 #ifndef DEFAULT_GDB_EXTENSIONS
84 #define DEFAULT_GDB_EXTENSIONS 1
87 extern int rtx_equal_function_value_matters
;
89 #if ! (defined (VMS) || defined (OS2))
90 extern char **environ
;
92 extern char *version_string
, *language_string
;
94 /* Carry information from ASM_DECLARE_OBJECT_NAME
95 to ASM_FINISH_DECLARE_OBJECT. */
97 extern int size_directive_output
;
98 extern tree last_assemble_variable_decl
;
100 extern void init_lex ();
101 extern void init_decl_processing ();
102 extern void init_obstacks ();
103 extern void init_tree_codes ();
104 extern void init_rtl ();
105 extern void init_regs ();
106 extern void init_optabs ();
107 extern void init_stmt ();
108 extern void init_reg_sets ();
109 extern void dump_flow_info ();
110 extern void dump_sched_info ();
111 extern void dump_local_alloc ();
113 void rest_of_decl_compilation ();
114 void error_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
115 void error_with_decl
PVPROTO((tree decl
, char *s
, ...));
116 void error_for_asm
PVPROTO((rtx insn
, char *s
, ...));
117 void error
PVPROTO((char *s
, ...));
118 void fatal
PVPROTO((char *s
, ...));
119 void warning_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
120 void warning_with_decl
PVPROTO((tree decl
, char *s
, ...));
121 void warning_for_asm
PVPROTO((rtx insn
, char *s
, ...));
122 void warning
PVPROTO((char *s
, ...));
123 void pedwarn
PVPROTO((char *s
, ...));
124 void pedwarn_with_decl
PVPROTO((tree decl
, char *s
, ...));
125 void pedwarn_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
126 void sorry
PVPROTO((char *s
, ...));
127 void really_sorry
PVPROTO((char *s
, ...));
132 void set_target_switch ();
133 static void print_switch_values ();
134 static char *decl_name ();
136 /* Name of program invoked, sans directories. */
140 /* Copy of arguments to main. */
144 /* Name of current original source file (what was input to cpp).
145 This comes from each #-command in the actual input. */
147 char *input_filename
;
149 /* Name of top-level original source file (what was input to cpp).
150 This comes from the #-command at the beginning of the actual input.
151 If there isn't any there, then this is the cc1 input file name. */
153 char *main_input_filename
;
155 /* Stream for reading from the input file. */
159 /* Current line number in real source file. */
163 /* Stack of currently pending input files. */
165 struct file_stack
*input_file_stack
;
167 /* Incremented on each change to input_file_stack. */
168 int input_file_stack_tick
;
170 /* FUNCTION_DECL for function now being parsed or compiled. */
172 extern tree current_function_decl
;
174 /* Name to use as base of names for dump output files. */
176 char *dump_base_name
;
178 /* Bit flags that specify the machine subtype we are compiling for.
179 Bits are tested using macros TARGET_... defined in the tm.h file
180 and set by `-m...' switches. Must be defined in rtlanal.c. */
182 extern int target_flags
;
184 /* Flags saying which kinds of debugging dump have been requested. */
187 int rtl_dump_and_exit
= 0;
188 int jump_opt_dump
= 0;
193 int combine_dump
= 0;
195 int local_reg_dump
= 0;
196 int global_reg_dump
= 0;
198 int jump2_opt_dump
= 0;
199 int dbr_sched_dump
= 0;
200 int flag_print_asm_name
= 0;
201 int stack_reg_dump
= 0;
203 /* Name for output file of assembly code, specified with -o. */
207 /* Value of the -G xx switch, and whether it was passed or not. */
211 /* Type(s) of debugging information we are producing (if any).
212 See flags.h for the definitions of the different possible
213 types of debugging information. */
214 enum debug_info_type write_symbols
= NO_DEBUG
;
216 /* Level of debugging information we are producing. See flags.h
217 for the definitions of the different possible levels. */
218 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
220 /* Nonzero means use GNU-only extensions in the generated symbolic
221 debugging information. */
222 /* Currently, this only has an effect when write_symbols is set to
223 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
224 int use_gnu_debug_info_extensions
= 0;
226 /* Nonzero means do optimizations. -O.
227 Particular numeric values stand for particular amounts of optimization;
228 thus, -O2 stores 2 here. However, the optimizations beyond the basic
229 ones are not controlled directly by this variable. Instead, they are
230 controlled by individual `flag_...' variables that are defaulted
231 based on this variable. */
235 /* Number of error messages and warning messages so far. */
238 int warningcount
= 0;
241 /* Flag to output bytecode instead of native assembler */
242 int output_bytecode
= 0;
244 /* Pointer to function to compute the name to use to print a declaration. */
246 char *(*decl_printable_name
) ();
248 /* Pointer to function to compute rtl for a language-specific tree code. */
250 struct rtx_def
*(*lang_expand_expr
) ();
252 /* Pointer to function to finish handling an incomplete decl at the
253 end of compilation. */
255 void (*incomplete_decl_finalize_hook
) () = 0;
257 /* Nonzero if generating code to do profiling. */
259 int profile_flag
= 0;
261 /* Nonzero if generating code to do profiling on a line-by-line basis. */
263 int profile_block_flag
;
265 /* Nonzero for -pedantic switch: warn about anything
266 that standard spec forbids. */
270 /* Temporarily suppress certain warnings.
271 This is set while reading code from a system header file. */
273 int in_system_header
= 0;
275 /* Nonzero means do stupid register allocation.
276 Currently, this is 1 if `optimize' is 0. */
278 int obey_regdecls
= 0;
280 /* Don't print functions as they are compiled and don't print
281 times taken by the various passes. -quiet. */
287 /* Nonzero means `char' should be signed. */
289 int flag_signed_char
;
291 /* Nonzero means give an enum type only as many bytes as it needs. */
293 int flag_short_enums
;
295 /* Nonzero for -fcaller-saves: allocate values in regs that need to
296 be saved across function calls, if that produces overall better code.
297 Optional now, so people can test it. */
299 #ifdef DEFAULT_CALLER_SAVES
300 int flag_caller_saves
= 1;
302 int flag_caller_saves
= 0;
305 /* Nonzero if structures and unions should be returned in memory.
307 This should only be defined if compatibility with another compiler or
308 with an ABI is needed, because it results in slower code. */
310 #ifndef DEFAULT_PCC_STRUCT_RETURN
311 #define DEFAULT_PCC_STRUCT_RETURN 1
314 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
316 int flag_pcc_struct_return
= DEFAULT_PCC_STRUCT_RETURN
;
318 /* Nonzero for -fforce-mem: load memory value into a register
319 before arithmetic on it. This makes better cse but slower compilation. */
321 int flag_force_mem
= 0;
323 /* Nonzero for -fforce-addr: load memory address into a register before
324 reference to memory. This makes better cse but slower compilation. */
326 int flag_force_addr
= 0;
328 /* Nonzero for -fdefer-pop: don't pop args after each function call;
329 instead save them up to pop many calls' args with one insns. */
331 int flag_defer_pop
= 0;
333 /* Nonzero for -ffloat-store: don't allocate floats and doubles
334 in extended-precision registers. */
336 int flag_float_store
= 0;
338 /* Nonzero for -fcse-follow-jumps:
339 have cse follow jumps to do a more extensive job. */
341 int flag_cse_follow_jumps
;
343 /* Nonzero for -fcse-skip-blocks:
344 have cse follow a branch around a block. */
345 int flag_cse_skip_blocks
;
347 /* Nonzero for -fexpensive-optimizations:
348 perform miscellaneous relatively-expensive optimizations. */
349 int flag_expensive_optimizations
;
351 /* Nonzero for -fthread-jumps:
352 have jump optimize output of loop. */
354 int flag_thread_jumps
;
356 /* Nonzero enables strength-reduction in loop.c. */
358 int flag_strength_reduce
= 0;
360 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
361 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
362 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
365 int flag_unroll_loops
;
367 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
368 This is generally not a win. */
370 int flag_unroll_all_loops
;
372 /* Nonzero for -fwritable-strings:
373 store string constants in data segment and don't uniquize them. */
375 int flag_writable_strings
= 0;
377 /* Nonzero means don't put addresses of constant functions in registers.
378 Used for compiling the Unix kernel, where strange substitutions are
379 done on the assembly output. */
381 int flag_no_function_cse
= 0;
383 /* Nonzero for -fomit-frame-pointer:
384 don't make a frame pointer in simple functions that don't require one. */
386 int flag_omit_frame_pointer
= 0;
388 /* Nonzero to inhibit use of define_optimization peephole opts. */
390 int flag_no_peephole
= 0;
392 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
393 operations in the interest of optimization. For example it allows
394 GCC to assume arguments to sqrt are nonnegative numbers, allowing
395 faster code for sqrt to be generated. */
397 int flag_fast_math
= 0;
399 /* Nonzero means all references through pointers are volatile. */
403 /* Nonzero means treat all global and extern variables as global. */
405 int flag_volatile_global
;
407 /* Nonzero means just do syntax checking; don't output anything. */
409 int flag_syntax_only
= 0;
411 /* Nonzero means to rerun cse after loop optimization. This increases
412 compilation time about 20% and picks up a few more common expressions. */
414 static int flag_rerun_cse_after_loop
;
416 /* Nonzero for -finline-functions: ok to inline functions that look like
417 good inline candidates. */
419 int flag_inline_functions
;
421 /* Nonzero for -fkeep-inline-functions: even if we make a function
422 go inline everywhere, keep its definition around for debugging
425 int flag_keep_inline_functions
;
427 /* Nonzero means that functions declared `inline' will be treated
428 as `static'. Prevents generation of zillions of copies of unused
429 static inline functions; instead, `inlines' are written out
430 only when actually used. Used in conjunction with -g. Also
431 does the right thing with #pragma interface. */
435 /* Nonzero means we should be saving declaration info into a .X file. */
437 int flag_gen_aux_info
= 0;
439 /* Specified name of aux-info file. */
441 static char *aux_info_file_name
;
443 /* Nonzero means make the text shared if supported. */
445 int flag_shared_data
;
447 /* Nonzero means schedule into delayed branch slots if supported. */
449 int flag_delayed_branch
;
451 /* Nonzero if we are compiling pure (sharable) code.
452 Value is 1 if we are doing reasonable (i.e. simple
453 offset into offset table) pic. Value is 2 if we can
454 only perform register offsets. */
458 /* Nonzero means place uninitialized global data in the bss section. */
462 /* Nonzero means pretend it is OK to examine bits of target floats,
463 even if that isn't true. The resulting code will have incorrect constants,
464 but the same series of instructions that the native compiler would make. */
466 int flag_pretend_float
;
468 /* Nonzero means change certain warnings into errors.
469 Usually these are warnings about failure to conform to some standard. */
471 int flag_pedantic_errors
= 0;
473 /* flag_schedule_insns means schedule insns within basic blocks (before
475 flag_schedule_insns_after_reload means schedule insns after
478 int flag_schedule_insns
= 0;
479 int flag_schedule_insns_after_reload
= 0;
481 /* -finhibit-size-directive inhibits output of .size for ELF.
482 This is used only for compiling crtstuff.c,
483 and it may be extended to other effects
484 needed for crtstuff.c on other systems. */
485 int flag_inhibit_size_directive
= 0;
487 /* -fverbose-asm causes extra commentary information to be produced in
488 the generated assembly code (to make it more readable). This option
489 is generally only of use to those who actually need to read the
490 generated assembly code (perhaps while debugging the compiler itself). */
492 int flag_verbose_asm
= 0;
494 /* -fgnu-linker specifies use of the GNU linker for initializations.
495 (Or, more generally, a linker that handles initializations.)
496 -fno-gnu-linker says that collect2 will be used. */
498 int flag_gnu_linker
= 0;
500 int flag_gnu_linker
= 1;
503 /* Table of language-independent -f options.
504 STRING is the option name. VARIABLE is the address of the variable.
505 ON_VALUE is the value to store in VARIABLE
506 if `-fSTRING' is seen as an option.
507 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
509 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
511 {"float-store", &flag_float_store
, 1},
512 {"volatile", &flag_volatile
, 1},
513 {"volatile-global", &flag_volatile_global
, 1},
514 {"defer-pop", &flag_defer_pop
, 1},
515 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
516 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
517 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
518 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
519 {"thread-jumps", &flag_thread_jumps
, 1},
520 {"strength-reduce", &flag_strength_reduce
, 1},
521 {"unroll-loops", &flag_unroll_loops
, 1},
522 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
523 {"writable-strings", &flag_writable_strings
, 1},
524 {"peephole", &flag_no_peephole
, 0},
525 {"force-mem", &flag_force_mem
, 1},
526 {"force-addr", &flag_force_addr
, 1},
527 {"function-cse", &flag_no_function_cse
, 0},
528 {"inline-functions", &flag_inline_functions
, 1},
529 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
530 {"inline", &flag_no_inline
, 0},
531 {"syntax-only", &flag_syntax_only
, 1},
532 {"shared-data", &flag_shared_data
, 1},
533 {"caller-saves", &flag_caller_saves
, 1},
534 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
535 {"reg-struct-return", &flag_pcc_struct_return
, 0},
536 {"delayed-branch", &flag_delayed_branch
, 1},
537 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
538 {"pretend-float", &flag_pretend_float
, 1},
539 {"schedule-insns", &flag_schedule_insns
, 1},
540 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
541 {"pic", &flag_pic
, 1},
542 {"PIC", &flag_pic
, 2},
543 {"fast-math", &flag_fast_math
, 1},
544 {"common", &flag_no_common
, 0},
545 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
546 {"verbose-asm", &flag_verbose_asm
, 1},
547 {"gnu-linker", &flag_gnu_linker
, 1},
548 {"bytecode", &output_bytecode
, 1}
551 /* Table of language-specific options. */
553 char *lang_options
[] =
556 "-fallow-single-precision",
558 "-fsigned-bitfields",
559 "-funsigned-bitfields",
560 "-fno-signed-bitfields",
561 "-fno-unsigned-bitfields",
565 "-fno-unsigned-char",
577 "-fno-cond-mismatch",
578 "-fdollars-in-identifiers",
579 "-fno-dollars-in-identifiers",
591 "-Wno-char-subscripts",
605 "-Wno-missing-braces",
606 "-Wmissing-declarations",
607 "-Wno-missing-declarations",
608 "-Wmissing-prototypes",
609 "-Wno-missing-prototypes",
611 "-Wno-nested-externs",
615 "-Wno-pointer-arith",
617 "-Wno-redundant-decls",
618 "-Wstrict-prototypes",
619 "-Wno-strict-prototypes",
625 "-Wno-write-strings",
627 /* These are for C++. */
628 "-+e0", /* gcc.c tacks the `-' on the front. */
633 "-falt-external-templates",
634 "-fno-alt-external-templates",
636 "-fno-ansi-exceptions",
637 "-fansi-overloading",
638 "-fno-ansi-overloading",
642 "-fno-conserve-space",
644 "-fno-default-inline",
647 "-felide-constructors",
648 "-fno-elide-constructors",
650 "-fno-enum-int-equiv",
651 "-fexternal-templates",
652 "-fno-external-templates",
655 "-fhandle-exceptions",
656 "-fno-handle-exceptions",
657 "-fhandle-signatures",
658 "-fno-handle-signatures",
661 "-fimplement-inlines",
662 "-fno-implement-inlines",
666 "-fno-memoize-lookups",
668 "-fno-nonnull-objects",
670 "-fno-save-memoized",
671 "-fspring-exceptions",
672 "-fno-spring-exceptions",
675 "-fstrict-prototype",
676 "-fno-strict-prototype",
677 "-fthis-is-variable",
678 "-fno-this-is-variable",
680 "-fno-vtable-thunks",
686 "-Woverloaded-virtual",
687 "-Wno-overloaded-virtual",
690 "-Wtemplate-debugging",
691 "-Wno-template-debugging",
692 "-Wctor-dtor-privacy",
693 "-Wno-ctor-dtor-privacy",
695 "-Wno-extern-inline",
697 /* these are for obj c */
709 /* This is for GNAT and is temporary. */
714 /* Options controlling warnings */
716 /* Don't print warning messages. -w. */
718 int inhibit_warnings
= 0;
720 /* Print various extra warnings. -W. */
722 int extra_warnings
= 0;
724 /* Treat warnings as errors. -Werror. */
726 int warnings_are_errors
= 0;
728 /* Nonzero to warn about unused local variables. */
732 /* Nonzero to warn about variables used before they are initialized. */
734 int warn_uninitialized
;
736 /* Nonzero means warn about all declarations which shadow others. */
740 /* Warn if a switch on an enum fails to have a case for every enum value. */
744 /* Nonzero means warn about function definitions that default the return type
745 or that use a null return and have a return-type other than void. */
747 int warn_return_type
;
749 /* Nonzero means warn about pointer casts that increase the required
750 alignment of the target type (and might therefore lead to a crash
751 due to a misaligned access). */
755 /* Nonzero means warn about any identifiers that match in the first N
756 characters. The value N is in `id_clash_len'. */
759 unsigned id_clash_len
;
761 /* Nonzero means warn about any objects definitions whose size is larger
762 than N bytes. Also want about function definitions whose returned
763 values are larger than N bytes. The value N is in `larger_than_size'. */
765 int warn_larger_than
;
766 unsigned larger_than_size
;
768 /* Nonzero means warn if inline function is too large. */
772 /* Warn if a function returns an aggregate,
773 since there are often incompatible calling conventions for doing this. */
775 int warn_aggregate_return
;
777 /* Likewise for -W. */
779 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
781 {"unused", &warn_unused
, 1},
782 {"error", &warnings_are_errors
, 1},
783 {"shadow", &warn_shadow
, 1},
784 {"switch", &warn_switch
, 1},
785 {"aggregate-return", &warn_aggregate_return
, 1},
786 {"cast-align", &warn_cast_align
, 1},
787 {"uninitialized", &warn_uninitialized
, 1},
788 {"inline", &warn_inline
, 1}
791 /* Output files for assembler code (real compiler output)
792 and debugging dumps. */
797 FILE *jump_opt_dump_file
;
799 FILE *loop_dump_file
;
800 FILE *cse2_dump_file
;
801 FILE *flow_dump_file
;
802 FILE *combine_dump_file
;
803 FILE *sched_dump_file
;
804 FILE *local_reg_dump_file
;
805 FILE *global_reg_dump_file
;
806 FILE *sched2_dump_file
;
807 FILE *jump2_opt_dump_file
;
808 FILE *dbr_sched_dump_file
;
809 FILE *stack_reg_dump_file
;
811 /* Time accumulators, to count the total time spent in various passes. */
815 int integration_time
;
823 int local_alloc_time
;
824 int global_alloc_time
;
827 int shorten_branch_time
;
833 /* Return time used so far, in microseconds. */
842 struct rusage rusage
;
847 int proc_system_time
;
849 int child_system_time
;
859 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
862 getrusage (0, &rusage
);
863 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
864 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
867 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
872 #define TIMEVAR(VAR, BODY) \
873 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
876 print_time (str
, total
)
881 "time in %s: %d.%06d\n",
882 str
, total
/ 1000000, total
% 1000000);
885 /* Count an error or warning. Return 1 if the message should be printed. */
888 count_error (warningp
)
891 if (warningp
&& inhibit_warnings
)
894 if (warningp
&& !warnings_are_errors
)
898 static int warning_message
= 0;
900 if (warningp
&& !warning_message
)
902 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
911 /* Print a fatal error message. NAME is the text.
912 Also include a system error message based on `errno'. */
915 pfatal_with_name (name
)
918 fprintf (stderr
, "%s: ", progname
);
924 fatal_io_error (name
)
927 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
931 /* Called to give a better error message when we don't have an insn to match
932 what we are looking for or if the insn's constraints aren't satisfied,
933 rather than just calling abort(). */
936 fatal_insn_not_found (insn
)
939 if (!output_bytecode
)
941 if (INSN_CODE (insn
) < 0)
942 error ("internal error--unrecognizable insn:");
944 error ("internal error--insn does not satisfy its constraints:");
948 fflush (asm_out_file
);
950 fflush (aux_info_file
);
952 fflush (rtl_dump_file
);
953 if (jump_opt_dump_file
)
954 fflush (jump_opt_dump_file
);
956 fflush (cse_dump_file
);
958 fflush (loop_dump_file
);
960 fflush (cse2_dump_file
);
962 fflush (flow_dump_file
);
963 if (combine_dump_file
)
964 fflush (combine_dump_file
);
966 fflush (sched_dump_file
);
967 if (local_reg_dump_file
)
968 fflush (local_reg_dump_file
);
969 if (global_reg_dump_file
)
970 fflush (global_reg_dump_file
);
971 if (sched2_dump_file
)
972 fflush (sched2_dump_file
);
973 if (jump2_opt_dump_file
)
974 fflush (jump2_opt_dump_file
);
975 if (dbr_sched_dump_file
)
976 fflush (dbr_sched_dump_file
);
977 if (stack_reg_dump_file
)
978 fflush (stack_reg_dump_file
);
982 /* This is the default decl_printable_name function. */
985 decl_name (decl
, kind
)
989 return IDENTIFIER_POINTER (DECL_NAME (decl
));
992 static int need_error_newline
;
994 /* Function of last error message;
995 more generally, function such that if next error message is in it
996 then we don't have to mention the function name. */
997 static tree last_error_function
= NULL
;
999 /* Used to detect when input_file_stack has changed since last described. */
1000 static int last_error_tick
;
1002 /* Called when the start of a function definition is parsed,
1003 this function prints on stderr the name of the function. */
1006 announce_function (decl
)
1012 if (rtl_dump_and_exit
)
1013 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1015 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, &junk
));
1017 need_error_newline
= 1;
1018 last_error_function
= current_function_decl
;
1022 /* Prints out, if necessary, the name of the current function
1023 which caused an error. Called from all error and warning functions. */
1026 report_error_function (file
)
1029 struct file_stack
*p
;
1031 if (need_error_newline
)
1033 fprintf (stderr
, "\n");
1034 need_error_newline
= 0;
1037 if (last_error_function
!= current_function_decl
)
1039 char *kind
= "function";
1040 if (current_function_decl
!= 0
1041 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
1045 fprintf (stderr
, "%s: ", file
);
1047 if (current_function_decl
== NULL
)
1048 fprintf (stderr
, "At top level:\n");
1051 char *name
= (*decl_printable_name
) (current_function_decl
, &kind
);
1052 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
1055 last_error_function
= current_function_decl
;
1057 if (input_file_stack
&& input_file_stack
->next
!= 0
1058 && input_file_stack_tick
!= last_error_tick
)
1060 fprintf (stderr
, "In file included");
1061 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1063 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
1065 fprintf (stderr
, ",\n ");
1067 fprintf (stderr
, ":\n");
1068 last_error_tick
= input_file_stack_tick
;
1072 /* Print a message. */
1075 vmessage (prefix
, s
, ap
)
1081 fprintf (stderr
, "%s: ", prefix
);
1084 vfprintf (stderr
, s
, ap
);
1087 HOST_WIDE_INT v1
= va_arg(ap
, HOST_WIDE_INT
);
1088 HOST_WIDE_INT v2
= va_arg(ap
, HOST_WIDE_INT
);
1089 HOST_WIDE_INT v3
= va_arg(ap
, HOST_WIDE_INT
);
1090 fprintf (stderr
, s
, v1
, v2
, v3
);
1095 /* Print a message relevant to line LINE of file FILE. */
1098 v_message_with_file_and_line (file
, line
, prefix
, s
, ap
)
1106 fprintf (stderr
, "%s:%d: ", file
, line
);
1108 fprintf (stderr
, "%s: ", progname
);
1110 vmessage (prefix
, s
, ap
);
1111 fputc ('\n', stderr
);
1114 /* Print a message relevant to the given DECL. */
1117 v_message_with_decl (decl
, prefix
, s
, ap
)
1125 fprintf (stderr
, "%s:%d: ",
1126 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1129 fprintf (stderr
, "%s: ", prefix
);
1131 /* Do magic to get around lack of varargs support for insertion
1132 of arguments into existing list. We know that the decl is first;
1133 we ass_u_me that it will be printed with "%s". */
1135 for (p
= s
; *p
; ++p
)
1139 if (*(p
+ 1) == '%')
1147 fwrite (s
, p
- s
, 1, stderr
);
1151 char *n
= (DECL_NAME (decl
)
1152 ? (*decl_printable_name
) (decl
, &junk
)
1158 if (isalpha (*(p
- 1) & 0xFF))
1164 vmessage ((char *)NULL
, p
, ap
);
1166 fputc ('\n', stderr
);
1169 /* Figure file and line of the given INSN. */
1172 file_and_line_for_asm (insn
, pfile
, pline
)
1177 rtx body
= PATTERN (insn
);
1180 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1181 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1182 asmop
= SET_SRC (body
);
1183 else if (GET_CODE (body
) == ASM_OPERANDS
)
1185 else if (GET_CODE (body
) == PARALLEL
1186 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1187 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1188 else if (GET_CODE (body
) == PARALLEL
1189 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1190 asmop
= XVECEXP (body
, 0, 0);
1196 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1197 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1201 *pfile
= input_filename
;
1206 /* Report an error at line LINE of file FILE. */
1209 v_error_with_file_and_line (file
, line
, s
, ap
)
1216 report_error_function (file
);
1217 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1221 error_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1233 file
= va_arg (ap
, char *);
1234 line
= va_arg (ap
, int);
1235 s
= va_arg (ap
, char *);
1238 v_error_with_file_and_line (file
, line
, s
, ap
);
1242 /* Report an error at the declaration DECL.
1243 S is a format string which uses %s to substitute the declaration
1244 name; subsequent substitutions are a la printf. */
1247 v_error_with_decl (decl
, s
, ap
)
1253 report_error_function (DECL_SOURCE_FILE (decl
));
1254 v_message_with_decl (decl
, (char *)NULL
, s
, ap
);
1258 error_with_decl
VPROTO((tree decl
, char *s
, ...))
1269 decl
= va_arg (ap
, tree
);
1270 s
= va_arg (ap
, char *);
1273 v_error_with_decl (decl
, s
, ap
);
1277 /* Report an error at the line number of the insn INSN.
1278 This is used only when INSN is an `asm' with operands,
1279 and each ASM_OPERANDS records its own source file and line. */
1282 v_error_for_asm (insn
, s
, ap
)
1291 file_and_line_for_asm (insn
, &file
, &line
);
1292 report_error_function (file
);
1293 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1297 error_for_asm
VPROTO((rtx insn
, char *s
, ...))
1308 insn
= va_arg (ap
, rtx
);
1309 s
= va_arg (ap
, char *);
1312 v_error_for_asm (insn
, s
, ap
);
1316 /* Report an error at the current line number. */
1323 v_error_with_file_and_line (input_filename
, lineno
, s
, ap
);
1327 error
VPROTO((char *s
, ...))
1337 s
= va_arg (ap
, char *);
1344 /* Report a fatal error at the current line number. */
1356 fatal
VPROTO((char *s
, ...))
1366 s
= va_arg (ap
, char *);
1373 /* Report a warning at line LINE of file FILE. */
1376 v_warning_with_file_and_line (file
, line
, s
, ap
)
1382 if (count_error (1))
1384 report_error_function (file
);
1385 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1390 warning_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1402 file
= va_arg (ap
, char *);
1403 line
= va_arg (ap
, int);
1404 s
= va_arg (ap
, char *);
1407 v_warning_with_file_and_line (file
, line
, s
, ap
);
1411 /* Report a warning at the declaration DECL.
1412 S is a format string which uses %s to substitute the declaration
1413 name; subsequent substitutions are a la printf. */
1416 v_warning_with_decl (decl
, s
, ap
)
1421 if (count_error (1))
1423 report_error_function (DECL_SOURCE_FILE (decl
));
1424 v_message_with_decl (decl
, "warning", s
, ap
);
1429 warning_with_decl
VPROTO((tree decl
, char *s
, ...))
1440 decl
= va_arg (ap
, tree
);
1441 s
= va_arg (ap
, char *);
1444 v_warning_with_decl (decl
, s
, ap
);
1448 /* Report a warning at the line number of the insn INSN.
1449 This is used only when INSN is an `asm' with operands,
1450 and each ASM_OPERANDS records its own source file and line. */
1453 v_warning_for_asm (insn
, s
, ap
)
1458 if (count_error (1))
1463 file_and_line_for_asm (insn
, &file
, &line
);
1464 report_error_function (file
);
1465 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1470 warning_for_asm
VPROTO((rtx insn
, char *s
, ...))
1481 insn
= va_arg (ap
, rtx
);
1482 s
= va_arg (ap
, char *);
1485 v_warning_for_asm (insn
, s
, ap
);
1489 /* Report a warning at the current line number. */
1496 v_warning_with_file_and_line (input_filename
, lineno
, s
, ap
);
1500 warning
VPROTO((char *s
, ...))
1510 s
= va_arg (ap
, char *);
1517 /* These functions issue either warnings or errors depending on
1518 -pedantic-errors. */
1525 if (flag_pedantic_errors
)
1532 pedwarn
VPROTO((char *s
, ...))
1542 s
= va_arg (ap
, char *);
1550 v_pedwarn_with_decl (decl
, s
, ap
)
1555 /* We don't want -pedantic-errors to cause the compilation to fail from
1556 "errors" in system header files. Sometimes fixincludes can't fix what's
1557 broken (eg: unsigned char bitfields - fixing it may change the alignment
1558 which will cause programs to mysteriously fail because the C library
1559 or kernel uses the original layout).
1561 ??? In fact, we may wish not to issue any message in this case. */
1563 if (flag_pedantic_errors
&& ! DECL_IN_SYSTEM_HEADER (decl
))
1564 v_error_with_decl (decl
, s
, ap
);
1566 v_warning_with_decl (decl
, s
, ap
);
1570 pedwarn_with_decl
VPROTO((tree decl
, char *s
, ...))
1581 decl
= va_arg (ap
, tree
);
1582 s
= va_arg (ap
, char *);
1585 v_pedwarn_with_decl (decl
, s
, ap
);
1590 v_pedwarn_with_file_and_line (file
, line
, s
, ap
)
1596 if (flag_pedantic_errors
)
1597 v_error_with_file_and_line (file
, line
, s
, ap
);
1599 v_warning_with_file_and_line (file
, line
, s
, ap
);
1603 pedwarn_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1615 file
= va_arg (ap
, char *);
1616 line
= va_arg (ap
, int);
1617 s
= va_arg (ap
, char *);
1620 v_pedwarn_with_file_and_line (file
, line
, s
, ap
);
1624 /* Apologize for not implementing some feature. */
1633 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1635 fprintf (stderr
, "%s: ", progname
);
1636 vmessage ("sorry, not implemented", s
, ap
);
1637 fputc ('\n', stderr
);
1641 sorry
VPROTO((char *s
, ...))
1651 s
= va_arg (ap
, char *);
1658 /* Apologize for not implementing some feature, then quit. */
1661 v_really_sorry (s
, ap
)
1667 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1669 fprintf (stderr
, "%s: ", progname
);
1670 vmessage ("sorry, not implemented", s
, ap
);
1671 fatal (" (fatal)\n");
1675 really_sorry
VPROTO((char *s
, ...))
1685 s
= va_arg (ap
, char *);
1688 v_really_sorry (s
, ap
);
1692 /* More 'friendly' abort that prints the line and file.
1693 config.h can #define abort fancy_abort if you like that sort of thing.
1695 I don't think this is actually a good idea.
1696 Other sorts of crashes will look a certain way.
1697 It is a good thing if crashes from calling abort look the same way.
1703 fatal ("internal gcc abort");
1706 /* This calls abort and is used to avoid problems when abort if a macro.
1707 It is used when we need to pass the address of abort. */
1715 /* When `malloc.c' is compiled with `rcheck' defined,
1716 it calls this function to report clobberage. */
1724 /* Same as `malloc' but report error if no memory available. */
1730 register char *value
= (char *) malloc (size
);
1732 fatal ("virtual memory exhausted");
1736 /* Same as `realloc' but report error if no memory available. */
1739 xrealloc (ptr
, size
)
1743 char *result
= (char *) realloc (ptr
, size
);
1745 fatal ("virtual memory exhausted");
1749 /* Return the logarithm of X, base 2, considering X unsigned,
1750 if X is a power of 2. Otherwise, returns -1.
1752 This should be used via the `exact_log2' macro. */
1756 register unsigned HOST_WIDE_INT x
;
1758 register int log
= 0;
1759 /* Test for 0 or a power of 2. */
1760 if (x
== 0 || x
!= (x
& -x
))
1762 while ((x
>>= 1) != 0)
1767 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1768 If X is 0, return -1.
1770 This should be used via the floor_log2 macro. */
1774 register unsigned HOST_WIDE_INT x
;
1776 register int log
= -1;
1784 jmp_buf float_handler
;
1786 /* Specify where to longjmp to when a floating arithmetic error happens.
1787 If HANDLER is 0, it means don't handle the errors any more. */
1790 set_float_handler (handler
)
1793 float_handled
= (handler
!= 0);
1795 bcopy (handler
, float_handler
, sizeof (float_handler
));
1798 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1799 error happens, pushing the previous specification into OLD_HANDLER.
1800 Return an indication of whether there was a previous handler in effect. */
1803 push_float_handler (handler
, old_handler
)
1804 jmp_buf handler
, old_handler
;
1806 int was_handled
= float_handled
;
1810 bcopy (float_handler
, old_handler
, sizeof (float_handler
));
1811 bcopy (handler
, float_handler
, sizeof (float_handler
));
1815 /* Restore the previous specification of whether and where to longjmp to
1816 when a floating arithmetic error happens. */
1819 pop_float_handler (handled
, handler
)
1823 float_handled
= handled
;
1825 bcopy (handler
, float_handler
, sizeof (float_handler
));
1828 /* Signals actually come here. */
1831 float_signal (signo
)
1832 /* If this is missing, some compilers complain. */
1835 if (float_handled
== 0)
1837 #if defined (USG) || defined (hpux)
1838 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1841 signal (SIGFPE
, float_signal
);
1842 longjmp (float_handler
, 1);
1845 /* Handler for SIGPIPE. */
1849 /* If this is missing, some compilers complain. */
1852 fatal ("output pipe has been closed");
1855 /* Strip off a legitimate source ending from the input string NAME of
1859 strip_off_ending (name
, len
)
1863 if (len
> 2 && ! strcmp (".c", name
+ len
- 2))
1865 else if (len
> 2 && ! strcmp (".m", name
+ len
- 2))
1867 else if (len
> 2 && ! strcmp (".i", name
+ len
- 2))
1869 else if (len
> 3 && ! strcmp (".ii", name
+ len
- 3))
1871 else if (len
> 3 && ! strcmp (".co", name
+ len
- 3))
1873 else if (len
> 3 && ! strcmp (".cc", name
+ len
- 3))
1875 else if (len
> 2 && ! strcmp (".C", name
+ len
- 2))
1877 else if (len
> 4 && ! strcmp (".cxx", name
+ len
- 4))
1879 else if (len
> 4 && ! strcmp (".cpp", name
+ len
- 4))
1881 else if (len
> 2 && ! strcmp (".f", name
+ len
- 2))
1883 /* Ada will use extensions like .ada, .adb, and .ads, so just test
1885 else if (len
> 4 && ! strncmp (".ad", name
+ len
- 4, 3))
1887 else if (len
> 4 && ! strcmp (".atr", name
+ len
- 4))
1891 /* Output a quoted string. */
1893 output_quoted_string (asm_file
, string
)
1899 putc ('\"', asm_file
);
1900 while ((c
= *string
++) != 0)
1902 if (c
== '\"' || c
== '\\')
1903 putc ('\\', asm_file
);
1906 putc ('\"', asm_file
);
1909 /* Output a file name in the form wanted by System V. */
1912 output_file_directive (asm_file
, input_name
)
1916 int len
= strlen (input_name
);
1917 char *na
= input_name
+ len
;
1919 /* NA gets INPUT_NAME sans directory names. */
1920 while (na
> input_name
)
1927 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1928 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
1930 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1931 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
1933 fprintf (asm_file
, "\t.file\t");
1934 output_quoted_string (asm_file
, na
);
1935 fputc ('\n', asm_file
);
1940 /* Routine to build language identifier for object file. */
1942 output_lang_identify (asm_out_file
)
1945 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
1946 char *s
= (char *) alloca (len
);
1947 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
1948 ASM_OUTPUT_LABEL (asm_out_file
, s
);
1951 /* Routine to open a dump file. */
1953 open_dump_file (base_name
, suffix
)
1958 char *dumpname
= (char *) alloca (strlen (base_name
) + strlen (suffix
) + 1);
1960 strcpy (dumpname
, base_name
);
1961 strcat (dumpname
, suffix
);
1962 f
= fopen (dumpname
, "w");
1964 pfatal_with_name (dumpname
);
1968 /* Compile an entire file of output from cpp, named NAME.
1969 Write a file of assembly output and various debugging dumps. */
1978 int name_specified
= name
!= 0;
1980 if (dump_base_name
== 0)
1981 dump_base_name
= name
? name
: "gccdump";
1985 integration_time
= 0;
1993 local_alloc_time
= 0;
1994 global_alloc_time
= 0;
1997 shorten_branch_time
= 0;
2003 /* Open input file. */
2005 if (name
== 0 || !strcmp (name
, "-"))
2011 finput
= fopen (name
, "r");
2013 pfatal_with_name (name
);
2015 #ifdef IO_BUFFER_SIZE
2016 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
2019 /* Initialize data in various passes. */
2024 /* Some of these really don't need to be called when generating bytecode,
2025 but the options would have to be parsed first to know that. -bson */
2028 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2029 || debug_info_level
== DINFO_LEVEL_VERBOSE
);
2030 init_decl_processing ();
2038 if (flag_caller_saves
)
2039 init_caller_save ();
2041 /* If auxiliary info generation is desired, open the output file.
2042 This goes in the same directory as the source file--unlike
2043 all the other output files. */
2044 if (flag_gen_aux_info
)
2046 aux_info_file
= fopen (aux_info_file_name
, "w");
2047 if (aux_info_file
== 0)
2048 pfatal_with_name (aux_info_file_name
);
2051 /* If rtl dump desired, open the output file. */
2053 rtl_dump_file
= open_dump_file (dump_base_name
, ".rtl");
2055 /* If jump_opt dump desired, open the output file. */
2057 jump_opt_dump_file
= open_dump_file (dump_base_name
, ".jump");
2059 /* If cse dump desired, open the output file. */
2061 cse_dump_file
= open_dump_file (dump_base_name
, ".cse");
2063 /* If loop dump desired, open the output file. */
2065 loop_dump_file
= open_dump_file (dump_base_name
, ".loop");
2067 /* If cse2 dump desired, open the output file. */
2069 cse2_dump_file
= open_dump_file (dump_base_name
, ".cse2");
2071 /* If flow dump desired, open the output file. */
2073 flow_dump_file
= open_dump_file (dump_base_name
, ".flow");
2075 /* If combine dump desired, open the output file. */
2077 combine_dump_file
= open_dump_file (dump_base_name
, ".combine");
2079 /* If scheduling dump desired, open the output file. */
2081 sched_dump_file
= open_dump_file (dump_base_name
, ".sched");
2083 /* If local_reg dump desired, open the output file. */
2085 local_reg_dump_file
= open_dump_file (dump_base_name
, ".lreg");
2087 /* If global_reg dump desired, open the output file. */
2088 if (global_reg_dump
)
2089 global_reg_dump_file
= open_dump_file (dump_base_name
, ".greg");
2091 /* If 2nd scheduling dump desired, open the output file. */
2093 sched2_dump_file
= open_dump_file (dump_base_name
, ".sched2");
2095 /* If jump2_opt dump desired, open the output file. */
2097 jump2_opt_dump_file
= open_dump_file (dump_base_name
, ".jump2");
2099 /* If dbr_sched dump desired, open the output file. */
2101 dbr_sched_dump_file
= open_dump_file (dump_base_name
, ".dbr");
2105 /* If stack_reg dump desired, open the output file. */
2107 stack_reg_dump_file
= open_dump_file (dump_base_name
, ".stack");
2111 /* Open assembler code output file. */
2113 if (! name_specified
&& asm_file_name
== 0)
2114 asm_out_file
= stdout
;
2117 int len
= strlen (dump_base_name
);
2118 register char *dumpname
= (char *) xmalloc (len
+ 6);
2119 strcpy (dumpname
, dump_base_name
);
2120 strip_off_ending (dumpname
, len
);
2121 strcat (dumpname
, ".s");
2122 if (asm_file_name
== 0)
2124 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
2125 strcpy (asm_file_name
, dumpname
);
2127 if (!strcmp (asm_file_name
, "-"))
2128 asm_out_file
= stdout
;
2130 asm_out_file
= fopen (asm_file_name
, "w");
2131 if (asm_out_file
== 0)
2132 pfatal_with_name (asm_file_name
);
2135 #ifdef IO_BUFFER_SIZE
2136 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
2137 _IOFBF
, IO_BUFFER_SIZE
);
2140 input_filename
= name
;
2142 /* Perform language-specific initialization.
2143 This may set main_input_filename. */
2146 /* If the input doesn't start with a #line, use the input name
2147 as the official input file name. */
2148 if (main_input_filename
== 0)
2149 main_input_filename
= name
;
2151 /* Put an entry on the input file stack for the main input file. */
2153 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
2154 input_file_stack
->next
= 0;
2155 input_file_stack
->name
= input_filename
;
2157 if (!output_bytecode
)
2159 ASM_FILE_START (asm_out_file
);
2162 /* Output something to inform GDB that this compilation was by GCC. Also
2163 serves to tell GDB file consists of bytecodes. */
2164 if (output_bytecode
)
2165 fprintf (asm_out_file
, "bc_gcc2_compiled.:\n");
2168 #ifndef ASM_IDENTIFY_GCC
2169 fprintf (asm_out_file
, "gcc2_compiled.:\n");
2171 ASM_IDENTIFY_GCC (asm_out_file
);
2175 /* Output something to identify which front-end produced this file. */
2176 #ifdef ASM_IDENTIFY_LANGUAGE
2177 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
2180 if (output_bytecode
)
2182 if (profile_flag
|| profile_block_flag
)
2183 error ("profiling not supported in bytecode compilation");
2187 /* ??? Note: There used to be a conditional here
2188 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2189 This was to guarantee separation between gcc_compiled. and
2190 the first function, for the sake of dbx on Suns.
2191 However, having the extra zero here confused the Emacs
2192 code for unexec, and might confuse other programs too.
2193 Therefore, I took out that change.
2194 In future versions we should find another way to solve
2195 that dbx problem. -- rms, 23 May 93. */
2197 /* Don't let the first function fall at the same address
2198 as gcc_compiled., if profiling. */
2199 if (profile_flag
|| profile_block_flag
)
2200 assemble_zeros (UNITS_PER_WORD
);
2203 /* If dbx symbol table desired, initialize writing it
2204 and output the predefined types. */
2205 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2206 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2207 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
2210 #ifdef SDB_DEBUGGING_INFO
2211 if (write_symbols
== SDB_DEBUG
)
2212 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
2215 #ifdef DWARF_DEBUGGING_INFO
2216 if (write_symbols
== DWARF_DEBUG
)
2217 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
2220 /* Initialize yet another pass. */
2222 if (!output_bytecode
)
2223 init_final (main_input_filename
);
2225 start_time
= get_run_time ();
2227 /* Call the parser, which parses the entire file
2228 (calling rest_of_compilation for each function). */
2230 if (yyparse () != 0)
2232 if (errorcount
== 0)
2233 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
2235 /* In case there were missing closebraces,
2236 get us back to the global binding level. */
2237 while (! global_bindings_p ())
2241 /* Compilation is now finished except for writing
2242 what's left of the symbol table output. */
2244 parse_time
+= get_run_time () - start_time
;
2246 parse_time
-= integration_time
;
2247 parse_time
-= varconst_time
;
2249 globals
= getdecls ();
2251 /* Really define vars that have had only a tentative definition.
2252 Really output inline functions that must actually be callable
2253 and have not been output so far. */
2256 int len
= list_length (globals
);
2257 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
2261 /* Process the decls in reverse order--earliest first.
2262 Put them into VEC from back to front, then take out from front. */
2264 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
2265 vec
[len
- i
- 1] = decl
;
2267 for (i
= 0; i
< len
; i
++)
2270 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2271 && incomplete_decl_finalize_hook
!= 0)
2272 (*incomplete_decl_finalize_hook
) (decl
);
2274 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2275 && ! TREE_ASM_WRITTEN (decl
))
2277 /* Don't write out static consts, unless we used them.
2278 (This used to write them out only if the address was
2279 taken, but that was wrong; if the variable was simply
2280 referred to, it still needs to exist or else it will
2281 be undefined in the linker.) */
2282 if (! TREE_READONLY (decl
)
2283 || TREE_PUBLIC (decl
)
2285 || TREE_ADDRESSABLE (decl
)
2286 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
2287 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2289 /* Cancel the RTL for this decl so that, if debugging info
2290 output for global variables is still to come,
2291 this one will be omitted. */
2292 DECL_RTL (decl
) = NULL
;
2295 if (TREE_CODE (decl
) == FUNCTION_DECL
2296 && ! TREE_ASM_WRITTEN (decl
)
2297 && DECL_INITIAL (decl
) != 0
2298 && (TREE_ADDRESSABLE (decl
)
2299 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
2300 && ! DECL_EXTERNAL (decl
))
2302 temporary_allocation ();
2303 output_inline_function (decl
);
2304 permanent_allocation (1);
2307 /* Warn about any function
2308 declared static but not defined.
2309 We don't warn about variables,
2310 because many programs have static variables
2311 that exist only to get some text into the object file. */
2314 || (DECL_NAME (decl
) && TREE_USED (DECL_NAME (decl
))))
2315 && TREE_CODE (decl
) == FUNCTION_DECL
2316 && DECL_INITIAL (decl
) == 0
2317 && DECL_EXTERNAL (decl
)
2318 && ! TREE_PUBLIC (decl
))
2320 /* This should be a pedwarn, except that there is
2321 no easy way to prevent it from happening when the
2322 name is used only inside a sizeof.
2323 This at least avoids being incorrect. */
2324 warning_with_decl (decl
,
2325 "`%s' declared `static' but never defined");
2326 /* This symbol is effectively an "extern" declaration now. */
2327 TREE_PUBLIC (decl
) = 1;
2328 assemble_external (decl
);
2331 /* Warn about static fns or vars defined but not used,
2332 but not about inline functions or static consts
2333 since defining those in header files is normal practice. */
2335 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2336 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2337 && ! DECL_IN_SYSTEM_HEADER (decl
)
2338 && ! DECL_EXTERNAL (decl
)
2339 && ! TREE_PUBLIC (decl
)
2340 && ! TREE_USED (decl
)
2341 && ! DECL_REGISTER (decl
)
2342 /* The TREE_USED bit for file-scope decls
2343 is kept in the identifier, to handle multiple
2344 external decls in different scopes. */
2345 && ! TREE_USED (DECL_NAME (decl
)))
2346 warning_with_decl (decl
, "`%s' defined but not used");
2348 #ifdef SDB_DEBUGGING_INFO
2349 /* The COFF linker can move initialized global vars to the end.
2350 And that can screw up the symbol ordering.
2351 By putting the symbols in that order to begin with,
2352 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2353 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2354 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2355 && DECL_RTL (decl
) != 0)
2356 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2358 /* Output COFF information for non-global
2359 file-scope initialized variables. */
2360 if (write_symbols
== SDB_DEBUG
2361 && TREE_CODE (decl
) == VAR_DECL
2362 && DECL_INITIAL (decl
)
2363 && DECL_RTL (decl
) != 0
2364 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2365 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2366 #endif /* SDB_DEBUGGING_INFO */
2367 #ifdef DWARF_DEBUGGING_INFO
2368 /* Output DWARF information for file-scope tentative data object
2369 declarations, file-scope (extern) function declarations (which
2370 had no corresponding body) and file-scope tagged type declarations
2371 and definitions which have not yet been forced out. */
2373 if (write_symbols
== DWARF_DEBUG
2374 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2375 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2380 /* Do dbx symbols */
2381 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2382 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2383 TIMEVAR (symout_time
,
2385 dbxout_finish (asm_out_file
, main_input_filename
);
2389 #ifdef DWARF_DEBUGGING_INFO
2390 if (write_symbols
== DWARF_DEBUG
)
2391 TIMEVAR (symout_time
,
2397 /* Output some stuff at end of file if nec. */
2399 if (!output_bytecode
)
2401 end_final (main_input_filename
);
2404 ASM_FILE_END (asm_out_file
);
2408 /* Language-specific end of compilation actions. */
2412 if (output_bytecode
)
2413 bc_write_file (asm_out_file
);
2415 /* Close the dump files. */
2417 if (flag_gen_aux_info
)
2419 fclose (aux_info_file
);
2421 unlink (aux_info_file_name
);
2425 fclose (rtl_dump_file
);
2428 fclose (jump_opt_dump_file
);
2431 fclose (cse_dump_file
);
2434 fclose (loop_dump_file
);
2437 fclose (cse2_dump_file
);
2440 fclose (flow_dump_file
);
2444 dump_combine_total_stats (combine_dump_file
);
2445 fclose (combine_dump_file
);
2449 fclose (sched_dump_file
);
2452 fclose (local_reg_dump_file
);
2454 if (global_reg_dump
)
2455 fclose (global_reg_dump_file
);
2458 fclose (sched2_dump_file
);
2461 fclose (jump2_opt_dump_file
);
2464 fclose (dbr_sched_dump_file
);
2468 fclose (stack_reg_dump_file
);
2471 /* Close non-debugging input and output files. Take special care to note
2472 whether fclose returns an error, since the pages might still be on the
2473 buffer chain while the file is open. */
2476 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
2477 fatal_io_error (asm_file_name
);
2479 /* Print the times. */
2483 fprintf (stderr
,"\n");
2484 print_time ("parse", parse_time
);
2486 if (!output_bytecode
)
2488 print_time ("integration", integration_time
);
2489 print_time ("jump", jump_time
);
2490 print_time ("cse", cse_time
);
2491 print_time ("loop", loop_time
);
2492 print_time ("cse2", cse2_time
);
2493 print_time ("flow", flow_time
);
2494 print_time ("combine", combine_time
);
2495 print_time ("sched", sched_time
);
2496 print_time ("local-alloc", local_alloc_time
);
2497 print_time ("global-alloc", global_alloc_time
);
2498 print_time ("sched2", sched2_time
);
2499 print_time ("dbranch", dbr_sched_time
);
2500 print_time ("shorten-branch", shorten_branch_time
);
2501 print_time ("stack-reg", stack_reg_time
);
2502 print_time ("final", final_time
);
2503 print_time ("varconst", varconst_time
);
2504 print_time ("symout", symout_time
);
2505 print_time ("dump", dump_time
);
2510 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2511 and TYPE_DECL nodes.
2513 This does nothing for local (non-static) variables.
2514 Otherwise, it sets up the RTL and outputs any assembler code
2515 (label definition, storage allocation and initialization).
2517 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2518 the assembler symbol name to be used. TOP_LEVEL is nonzero
2519 if this declaration is not within a function. */
2522 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
2528 /* Declarations of variables, and of functions defined elsewhere. */
2530 /* The most obvious approach, to put an #ifndef around where
2531 this macro is used, doesn't work since it's inside a macro call. */
2532 #ifndef ASM_FINISH_DECLARE_OBJECT
2533 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2536 /* Forward declarations for nested functions are not "external",
2537 but we need to treat them as if they were. */
2538 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
2539 || TREE_CODE (decl
) == FUNCTION_DECL
)
2540 TIMEVAR (varconst_time
,
2542 make_decl_rtl (decl
, asmspec
, top_level
);
2543 /* Initialized extern variable exists to be replaced
2544 with its value, or represents something that will be
2545 output in another file. */
2546 if (! (TREE_CODE (decl
) == VAR_DECL
2547 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
2548 && DECL_INITIAL (decl
) != 0
2549 && DECL_INITIAL (decl
) != error_mark_node
))
2550 /* Don't output anything
2551 when a tentative file-scope definition is seen.
2552 But at end of compilation, do output code for them. */
2553 if (! (! at_end
&& top_level
2554 && (DECL_INITIAL (decl
) == 0
2555 || DECL_INITIAL (decl
) == error_mark_node
)))
2556 assemble_variable (decl
, top_level
, at_end
, 0);
2557 if (decl
== last_assemble_variable_decl
)
2559 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
2563 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
2565 if (decode_reg_name (asmspec
) >= 0)
2567 DECL_RTL (decl
) = 0;
2568 make_decl_rtl (decl
, asmspec
, top_level
);
2571 error ("invalid register name `%s' for register variable", asmspec
);
2573 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2574 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2575 && TREE_CODE (decl
) == TYPE_DECL
)
2576 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
2578 #ifdef SDB_DEBUGGING_INFO
2579 else if (write_symbols
== SDB_DEBUG
&& top_level
2580 && TREE_CODE (decl
) == TYPE_DECL
)
2581 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2585 /* Called after finishing a record, union or enumeral type. */
2588 rest_of_type_compilation (type
, toplev
)
2592 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2593 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2594 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2596 #ifdef SDB_DEBUGGING_INFO
2597 if (write_symbols
== SDB_DEBUG
)
2598 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2602 /* This is called from finish_function (within yyparse)
2603 after each top-level definition is parsed.
2604 It is supposed to compile that function or variable
2605 and output the assembler code for it.
2606 After we return, the tree storage is freed. */
2609 rest_of_compilation (decl
)
2613 int start_time
= get_run_time ();
2615 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2616 to be restored after we finish compiling the function
2617 (for use when compiling inline calls to this function). */
2618 tree saved_block_tree
= 0;
2619 /* Likewise, for DECL_ARGUMENTS. */
2620 tree saved_arguments
= 0;
2623 if (output_bytecode
)
2626 /* If we are reconsidering an inline function
2627 at the end of compilation, skip the stuff for making it inline. */
2629 if (DECL_SAVED_INSNS (decl
) == 0)
2631 int specd
= DECL_INLINE (decl
);
2634 /* If requested, consider whether to make this function inline. */
2635 if (specd
|| flag_inline_functions
)
2636 TIMEVAR (integration_time
,
2638 lose
= function_cannot_inline_p (decl
);
2639 /* If not optimzing, then make sure the DECL_INLINE
2641 if (lose
|| ! optimize
)
2643 if (warn_inline
&& specd
)
2644 warning_with_decl (decl
, lose
);
2645 DECL_INLINE (decl
) = 0;
2646 /* Don't really compile an extern inline function.
2647 If we can't make it inline, pretend
2648 it was only declared. */
2649 if (DECL_EXTERNAL (decl
))
2651 DECL_INITIAL (decl
) = 0;
2652 goto exit_rest_of_compilation
;
2656 DECL_INLINE (decl
) = 1;
2659 insns
= get_insns ();
2661 /* Dump the rtl code if we are dumping rtl. */
2666 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
2667 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2668 if (DECL_SAVED_INSNS (decl
))
2669 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
2670 print_rtl (rtl_dump_file
, insns
);
2671 fflush (rtl_dump_file
);
2674 /* If function is inline, and we don't yet know whether to
2675 compile it by itself, defer decision till end of compilation.
2676 finish_compilation will call rest_of_compilation again
2677 for those functions that need to be output. Also defer those
2678 functions that were marked inline but weren't inlined; they
2679 may never be used. */
2681 if ((specd
|| DECL_INLINE (decl
))
2682 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
2683 && ! flag_keep_inline_functions
)
2684 || DECL_EXTERNAL (decl
)))
2686 #ifdef DWARF_DEBUGGING_INFO
2687 /* Generate the DWARF info for the "abstract" instance
2688 of a function which we may later generate inlined and/or
2689 out-of-line instances of. */
2690 if (write_symbols
== DWARF_DEBUG
)
2692 set_decl_abstract_flags (decl
, 1);
2693 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2694 set_decl_abstract_flags (decl
, 0);
2697 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
2698 goto exit_rest_of_compilation
;
2701 /* If we have to compile the function now, save its rtl and subdecls
2702 so that its compilation will not affect what others get. */
2703 if (DECL_INLINE (decl
))
2705 #ifdef DWARF_DEBUGGING_INFO
2706 /* Generate the DWARF info for the "abstract" instance of
2707 a function which we will generate an out-of-line instance
2708 of almost immediately (and which we may also later generate
2709 various inlined instances of). */
2710 if (write_symbols
== DWARF_DEBUG
)
2712 set_decl_abstract_flags (decl
, 1);
2713 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2714 set_decl_abstract_flags (decl
, 0);
2717 saved_block_tree
= DECL_INITIAL (decl
);
2718 saved_arguments
= DECL_ARGUMENTS (decl
);
2719 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
2723 TREE_ASM_WRITTEN (decl
) = 1;
2725 /* Now that integrate will no longer see our rtl, we need not distinguish
2726 between the return value of this function and the return value of called
2728 rtx_equal_function_value_matters
= 0;
2730 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
2731 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
2733 goto exit_rest_of_compilation
;
2736 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2737 Note that that may have been done above, in save_for_inline_copying.
2738 The call to resume_temporary_allocation near the end of this function
2739 goes back to the usual state of affairs. */
2741 rtl_in_current_obstack ();
2744 /* If we are doing position-independent code generation, now
2745 is the time to output special prologues and epilogues.
2746 We do not want to do this earlier, because it just clutters
2747 up inline functions with meaningless insns. */
2752 insns
= get_insns ();
2754 /* Copy any shared structure that should not be shared. */
2756 unshare_all_rtl (insns
);
2758 /* Instantiate all virtual registers. */
2760 instantiate_virtual_regs (current_function_decl
, get_insns ());
2762 /* See if we have allocated stack slots that are not directly addressable.
2763 If so, scan all the insns and create explicit address computation
2764 for all references to such slots. */
2765 /* fixup_stack_slots (); */
2767 /* Do jump optimization the first time, if -opt.
2768 Also do it if -W, but in that case it doesn't change the rtl code,
2769 it only computes whether control can drop off the end of the function. */
2771 if (optimize
> 0 || extra_warnings
|| warn_return_type
2772 /* If function is `noreturn', we should warn if it tries to return. */
2773 || TREE_THIS_VOLATILE (decl
))
2775 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
2776 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
2779 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
2780 if (rtl_dump_and_exit
|| flag_syntax_only
)
2781 goto exit_rest_of_compilation
;
2783 /* Dump rtl code after jump, if we are doing that. */
2788 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
2789 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2790 print_rtl (jump_opt_dump_file
, insns
);
2791 fflush (jump_opt_dump_file
);
2794 /* Perform common subexpression elimination.
2795 Nonzero value from `cse_main' means that jumps were simplified
2796 and some code may now be unreachable, so do
2797 jump optimization again. */
2802 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
2803 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2808 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
2810 if (flag_thread_jumps
)
2811 /* Hacks by tiemann & kenner. */
2812 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
2814 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
2816 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
2819 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2822 /* Dump rtl code after cse, if we are doing that. */
2827 print_rtl (cse_dump_file
, insns
);
2828 fflush (cse_dump_file
);
2834 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
2835 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2838 /* Move constant computations out of loops. */
2844 loop_optimize (insns
, loop_dump_file
);
2848 /* Dump rtl code after loop opt, if we are doing that. */
2853 print_rtl (loop_dump_file
, insns
);
2854 fflush (loop_dump_file
);
2860 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
2861 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2864 if (optimize
> 0 && flag_rerun_cse_after_loop
)
2866 /* Running another jump optimization pass before the second
2867 cse pass sometimes simplifies the RTL enough to allow
2868 the second CSE pass to do a better job. Jump_optimize can change
2869 max_reg_num so we must rerun reg_scan afterwards.
2870 ??? Rework to not call reg_scan so often. */
2871 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
2872 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
2874 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
2875 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
2876 1, cse2_dump_file
));
2878 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2881 if (optimize
> 0 && flag_thread_jumps
)
2882 /* This pass of jump threading straightens out code
2883 that was kinked by loop optimization. */
2884 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2886 /* Dump rtl code after cse, if we are doing that. */
2891 print_rtl (cse2_dump_file
, insns
);
2892 fflush (cse2_dump_file
);
2895 /* We are no longer anticipating cse in this function, at least. */
2897 cse_not_expected
= 1;
2899 /* Now we choose between stupid (pcc-like) register allocation
2900 (if we got the -noreg switch and not -opt)
2901 and smart register allocation. */
2903 if (optimize
> 0) /* Stupid allocation probably won't work */
2904 obey_regdecls
= 0; /* if optimizations being done. */
2908 /* Print function header into flow dump now
2909 because doing the flow analysis makes some of the dump. */
2914 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
2915 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2922 regclass (insns
, max_reg_num ());
2923 stupid_life_analysis (insns
, max_reg_num (),
2929 /* Do control and data flow analysis,
2930 and write some of the results to dump file. */
2932 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
2934 if (warn_uninitialized
)
2936 uninitialized_vars_warning (DECL_INITIAL (decl
));
2937 setjmp_args_warning ();
2941 /* Dump rtl after flow analysis. */
2946 print_rtl (flow_dump_file
, insns
);
2947 fflush (flow_dump_file
);
2950 /* If -opt, try combining insns through substitution. */
2953 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
2955 /* Dump rtl code after insn combination. */
2960 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
2961 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2962 dump_combine_stats (combine_dump_file
);
2963 print_rtl (combine_dump_file
, insns
);
2964 fflush (combine_dump_file
);
2967 /* Print function header into sched dump now
2968 because doing the sched analysis makes some of the dump. */
2973 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
2974 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2977 if (optimize
> 0 && flag_schedule_insns
)
2979 /* Do control and data sched analysis,
2980 and write some of the results to dump file. */
2982 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
2985 /* Dump rtl after instruction scheduling. */
2990 print_rtl (sched_dump_file
, insns
);
2991 fflush (sched_dump_file
);
2994 /* Unless we did stupid register allocation,
2995 allocate pseudo-regs that are used only within 1 basic block. */
2998 TIMEVAR (local_alloc_time
,
3000 regclass (insns
, max_reg_num ());
3004 /* Dump rtl code after allocating regs within basic blocks. */
3009 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
3010 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3011 dump_flow_info (local_reg_dump_file
);
3012 dump_local_alloc (local_reg_dump_file
);
3013 print_rtl (local_reg_dump_file
, insns
);
3014 fflush (local_reg_dump_file
);
3017 if (global_reg_dump
)
3019 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
3020 IDENTIFIER_POINTER (DECL_NAME (decl
))));
3022 /* Unless we did stupid register allocation,
3023 allocate remaining pseudo-regs, then do the reload pass
3024 fixing up any insns that are invalid. */
3026 TIMEVAR (global_alloc_time
,
3029 failure
= global_alloc (global_reg_dump_file
);
3031 failure
= reload (insns
, 0, global_reg_dump_file
);
3034 if (global_reg_dump
)
3037 dump_global_regs (global_reg_dump_file
);
3038 print_rtl (global_reg_dump_file
, insns
);
3039 fflush (global_reg_dump_file
);
3043 goto exit_rest_of_compilation
;
3045 reload_completed
= 1;
3047 /* On some machines, the prologue and epilogue code, or parts thereof,
3048 can be represented as RTL. Doing so lets us schedule insns between
3049 it and the rest of the code and also allows delayed branch
3050 scheduling to operate in the epilogue. */
3052 thread_prologue_and_epilogue_insns (insns
);
3054 if (optimize
> 0 && flag_schedule_insns_after_reload
)
3059 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
3060 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3063 /* Do control and data sched analysis again,
3064 and write some more of the results to dump file. */
3066 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
3068 /* Dump rtl after post-reorder instruction scheduling. */
3073 print_rtl (sched2_dump_file
, insns
);
3074 fflush (sched2_dump_file
);
3078 #ifdef LEAF_REGISTERS
3080 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
3084 /* One more attempt to remove jumps to .+1
3085 left by dead-store-elimination.
3086 Also do cross-jumping this time
3087 and delete no-op move insns. */
3091 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
3094 /* Dump rtl code after jump, if we are doing that. */
3099 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
3100 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3101 print_rtl (jump2_opt_dump_file
, insns
);
3102 fflush (jump2_opt_dump_file
);
3105 /* If a machine dependent reorganization is needed, call it. */
3106 #ifdef MACHINE_DEPENDENT_REORG
3107 MACHINE_DEPENDENT_REORG (insns
);
3110 /* If a scheduling pass for delayed branches is to be done,
3111 call the scheduling code. */
3114 if (optimize
> 0 && flag_delayed_branch
)
3116 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
3121 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
3122 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3123 print_rtl (dbr_sched_dump_file
, insns
);
3124 fflush (dbr_sched_dump_file
);
3131 /* Shorten branches. */
3132 TIMEVAR (shorten_branch_time
,
3134 shorten_branches (get_insns ());
3138 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
3143 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
3144 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3145 print_rtl (stack_reg_dump_file
, insns
);
3146 fflush (stack_reg_dump_file
);
3151 /* Now turn the rtl into assembler code. */
3153 TIMEVAR (final_time
,
3158 /* Get the function's name, as described by its RTL.
3159 This may be different from the DECL_NAME name used
3160 in the source file. */
3162 x
= DECL_RTL (decl
);
3163 if (GET_CODE (x
) != MEM
)
3166 if (GET_CODE (x
) != SYMBOL_REF
)
3168 fnname
= XSTR (x
, 0);
3170 assemble_start_function (decl
, fnname
);
3171 final_start_function (insns
, asm_out_file
, optimize
);
3172 final (insns
, asm_out_file
, optimize
, 0);
3173 final_end_function (insns
, asm_out_file
, optimize
);
3174 assemble_end_function (decl
, fnname
);
3175 fflush (asm_out_file
);
3178 /* Write DBX symbols if requested */
3180 /* Note that for those inline functions where we don't initially
3181 know for certain that we will be generating an out-of-line copy,
3182 the first invocation of this routine (rest_of_compilation) will
3183 skip over this code by doing a `goto exit_rest_of_compilation;'.
3184 Later on, finish_compilation will call rest_of_compilation again
3185 for those inline functions that need to have out-of-line copies
3186 generated. During that call, we *will* be routed past here. */
3188 #ifdef DBX_DEBUGGING_INFO
3189 if (write_symbols
== DBX_DEBUG
)
3190 TIMEVAR (symout_time
, dbxout_function (decl
));
3193 #ifdef DWARF_DEBUGGING_INFO
3194 if (write_symbols
== DWARF_DEBUG
)
3195 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3198 exit_rest_of_compilation
:
3200 /* In case the function was not output,
3201 don't leave any temporary anonymous types
3202 queued up for sdb output. */
3203 #ifdef SDB_DEBUGGING_INFO
3204 if (write_symbols
== SDB_DEBUG
)
3205 sdbout_types (NULL_TREE
);
3208 /* Put back the tree of subblocks and list of arguments
3209 from before we copied them.
3210 Code generation and the output of debugging info may have modified
3211 the copy, but the original is unchanged. */
3213 if (saved_block_tree
!= 0)
3214 DECL_INITIAL (decl
) = saved_block_tree
;
3215 if (saved_arguments
!= 0)
3216 DECL_ARGUMENTS (decl
) = saved_arguments
;
3218 reload_completed
= 0;
3220 /* Clear out the real_constant_chain before some of the rtx's
3221 it runs through become garbage. */
3223 clear_const_double_mem ();
3225 /* Cancel the effect of rtl_in_current_obstack. */
3227 resume_temporary_allocation ();
3229 /* The parsing time is all the time spent in yyparse
3230 *except* what is spent in this function. */
3232 parse_time
-= get_run_time () - start_time
;
3235 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3236 Exit code is 35 if can't open files, 34 if fatal error,
3237 33 if had nonfatal errors, else success. */
3240 main (argc
, argv
, envp
)
3247 int flag_print_mem
= 0;
3248 int version_flag
= 0;
3251 /* save in case md file wants to emit args as a comment. */
3255 p
= argv
[0] + strlen (argv
[0]);
3256 while (p
!= argv
[0] && p
[-1] != '/') --p
;
3260 /* Get rid of any avoidable limit on stack size. */
3264 /* Set the stack limit huge so that alloca does not fail. */
3265 getrlimit (RLIMIT_STACK
, &rlim
);
3266 rlim
.rlim_cur
= rlim
.rlim_max
;
3267 setrlimit (RLIMIT_STACK
, &rlim
);
3269 #endif /* RLIMIT_STACK */
3271 signal (SIGFPE
, float_signal
);
3274 signal (SIGPIPE
, pipe_closed
);
3277 decl_printable_name
= decl_name
;
3278 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
3280 /* Initialize whether `char' is signed. */
3281 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
3282 #ifdef DEFAULT_SHORT_ENUMS
3283 /* Initialize how much space enums occupy, by default. */
3284 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
3287 /* Scan to see what optimization level has been specified. That will
3288 determine the default value of many flags. */
3289 for (i
= 1; i
< argc
; i
++)
3291 if (!strcmp (argv
[i
], "-O"))
3295 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
3297 /* Handle -O2, -O3, -O69, ... */
3298 char *p
= &argv
[i
][2];
3302 if (! (c
>= '0' && c
<= '9'))
3305 optimize
= atoi (&argv
[i
][2]);
3309 obey_regdecls
= (optimize
== 0);
3319 flag_thread_jumps
= 1;
3321 flag_delayed_branch
= 1;
3323 #ifdef CAN_DEBUG_WITHOUT_FP
3324 flag_omit_frame_pointer
= 1;
3330 flag_cse_follow_jumps
= 1;
3331 flag_cse_skip_blocks
= 1;
3332 flag_expensive_optimizations
= 1;
3333 flag_strength_reduce
= 1;
3334 flag_rerun_cse_after_loop
= 1;
3335 flag_caller_saves
= 1;
3336 #ifdef INSN_SCHEDULING
3337 flag_schedule_insns
= 1;
3338 flag_schedule_insns_after_reload
= 1;
3344 flag_inline_functions
= 1;
3347 #ifdef OPTIMIZATION_OPTIONS
3348 /* Allow default optimizations to be specified on a per-machine basis. */
3349 OPTIMIZATION_OPTIONS (optimize
);
3352 /* Initialize register usage now so switches may override. */
3356 set_target_switch ("");
3358 for (i
= 1; i
< argc
; i
++)
3361 /* If this is a language-specific option,
3362 decode it in a language-specific way. */
3363 for (j
= 0; lang_options
[j
] != 0; j
++)
3364 if (!strncmp (argv
[i
], lang_options
[j
],
3365 strlen (lang_options
[j
])))
3367 if (lang_options
[j
] != 0)
3368 /* If the option is valid for *some* language,
3369 treat it as valid even if this language doesn't understand it. */
3370 lang_decode_option (argv
[i
]);
3371 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
3373 register char *str
= argv
[i
] + 1;
3378 set_target_switch (&str
[1]);
3379 else if (!strcmp (str
, "dumpbase"))
3381 dump_base_name
= argv
[++i
];
3383 else if (str
[0] == 'd')
3385 register char *p
= &str
[1];
3393 global_reg_dump
= 1;
3399 cse_dump
= 1, cse2_dump
= 1;
3417 global_reg_dump
= 1;
3435 flag_print_asm_name
= 1;
3457 rtl_dump_and_exit
= 1;
3461 else if (str
[0] == 'f')
3463 register char *p
= &str
[1];
3466 /* Some kind of -f option.
3467 P's value is the option sans `-f'.
3468 Search for it in the table of options. */
3471 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
3474 if (!strcmp (p
, f_options
[j
].string
))
3476 *f_options
[j
].variable
= f_options
[j
].on_value
;
3477 /* A goto here would be cleaner,
3478 but breaks the vax pcc. */
3481 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3482 && ! strcmp (p
+3, f_options
[j
].string
))
3484 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
3491 else if (!strncmp (p
, "fixed-", 6))
3492 fix_register (&p
[6], 1, 1);
3493 else if (!strncmp (p
, "call-used-", 10))
3494 fix_register (&p
[10], 0, 1);
3495 else if (!strncmp (p
, "call-saved-", 11))
3496 fix_register (&p
[11], 0, 0);
3498 error ("Invalid option `%s'", argv
[i
]);
3500 else if (str
[0] == 'O')
3502 register char *p
= str
+1;
3503 while (*p
&& *p
>= '0' && *p
<= '9')
3508 error ("Invalid option `%s'", argv
[i
]);
3510 else if (!strcmp (str
, "pedantic"))
3512 else if (!strcmp (str
, "pedantic-errors"))
3513 flag_pedantic_errors
= pedantic
= 1;
3514 else if (!strcmp (str
, "quiet"))
3516 else if (!strcmp (str
, "version"))
3518 else if (!strcmp (str
, "w"))
3519 inhibit_warnings
= 1;
3520 else if (!strcmp (str
, "W"))
3523 /* We save the value of warn_uninitialized, since if they put
3524 -Wuninitialized on the command line, we need to generate a
3525 warning about not using it without also specifying -O. */
3526 if (warn_uninitialized
!= 1)
3527 warn_uninitialized
= 2;
3529 else if (str
[0] == 'W')
3531 register char *p
= &str
[1];
3534 /* Some kind of -W option.
3535 P's value is the option sans `-W'.
3536 Search for it in the table of options. */
3539 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
3542 if (!strcmp (p
, W_options
[j
].string
))
3544 *W_options
[j
].variable
= W_options
[j
].on_value
;
3545 /* A goto here would be cleaner,
3546 but breaks the vax pcc. */
3549 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3550 && ! strcmp (p
+3, W_options
[j
].string
))
3552 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
3559 else if (!strncmp (p
, "id-clash-", 9))
3565 if (*endp
>= '0' && *endp
<= '9')
3569 error ("Invalid option `%s'", argv
[i
]);
3574 id_clash_len
= atoi (str
+ 10);
3577 else if (!strncmp (p
, "larger-than-", 12))
3579 char *endp
= p
+ 12;
3583 if (*endp
>= '0' && *endp
<= '9')
3587 error ("Invalid option `%s'", argv
[i
]);
3588 goto larger_than_lose
;
3591 warn_larger_than
= 1;
3592 larger_than_size
= atoi (str
+ 13);
3596 error ("Invalid option `%s'", argv
[i
]);
3598 else if (!strcmp (str
, "p"))
3600 if (!output_bytecode
)
3603 error ("profiling not supported in bytecode compilation");
3605 else if (!strcmp (str
, "a"))
3607 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3608 warning ("`-a' option (basic block profile) not supported");
3610 profile_block_flag
= 1;
3613 else if (str
[0] == 'g')
3620 while (*p
&& (*p
< '0' || *p
> '9'))
3624 while (*q
&& (*q
>= '0' && *q
<= '9'))
3629 level
= 2; /* default debugging info level */
3630 if (*q
|| level
> 3)
3632 warning ("invalid debug level specification in option: `-%s'",
3634 warning ("no debugging information will be generated");
3638 /* If more than one debugging type is supported,
3639 you must define PREFERRED_DEBUGGING_TYPE
3640 to choose a format in a system-dependent way. */
3641 /* This is one long line cause VAXC can't handle a \-newline. */
3642 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
3643 #ifdef PREFERRED_DEBUGGING_TYPE
3644 if (!strncmp (str
, "ggdb", len
))
3645 write_symbols
= PREFERRED_DEBUGGING_TYPE
;
3646 #else /* no PREFERRED_DEBUGGING_TYPE */
3647 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
3648 #endif /* no PREFERRED_DEBUGGING_TYPE */
3649 #endif /* More than one debugger format enabled. */
3650 #ifdef DBX_DEBUGGING_INFO
3651 if (write_symbols
!= NO_DEBUG
)
3653 else if (!strncmp (str
, "ggdb", len
))
3654 write_symbols
= DBX_DEBUG
;
3655 else if (!strncmp (str
, "gstabs", len
))
3656 write_symbols
= DBX_DEBUG
;
3657 else if (!strncmp (str
, "gstabs+", len
))
3658 write_symbols
= DBX_DEBUG
;
3660 /* Always enable extensions for -ggdb or -gstabs+,
3661 always disable for -gstabs.
3662 For plain -g, use system-specific default. */
3663 if (write_symbols
== DBX_DEBUG
&& !strncmp (str
, "ggdb", len
)
3665 use_gnu_debug_info_extensions
= 1;
3666 else if (write_symbols
== DBX_DEBUG
&& !strncmp (str
, "gstabs+", len
)
3668 use_gnu_debug_info_extensions
= 1;
3669 else if (write_symbols
== DBX_DEBUG
3670 && !strncmp (str
, "gstabs", len
) && len
>= 2)
3671 use_gnu_debug_info_extensions
= 0;
3673 use_gnu_debug_info_extensions
= DEFAULT_GDB_EXTENSIONS
;
3674 #endif /* DBX_DEBUGGING_INFO */
3675 #ifdef DWARF_DEBUGGING_INFO
3676 if (write_symbols
!= NO_DEBUG
)
3678 else if (!strncmp (str
, "g", len
))
3679 write_symbols
= DWARF_DEBUG
;
3680 else if (!strncmp (str
, "ggdb", len
))
3681 write_symbols
= DWARF_DEBUG
;
3682 else if (!strncmp (str
, "gdwarf", len
))
3683 write_symbols
= DWARF_DEBUG
;
3685 /* Always enable extensions for -ggdb or -gdwarf+,
3686 always disable for -gdwarf.
3687 For plain -g, use system-specific default. */
3688 if (write_symbols
== DWARF_DEBUG
&& !strncmp (str
, "ggdb", len
)
3690 use_gnu_debug_info_extensions
= 1;
3691 else if (write_symbols
== DWARF_DEBUG
&& !strcmp (str
, "gdwarf+"))
3692 use_gnu_debug_info_extensions
= 1;
3693 else if (write_symbols
== DWARF_DEBUG
3694 && !strncmp (str
, "gdwarf", len
) && len
>= 2)
3695 use_gnu_debug_info_extensions
= 0;
3697 use_gnu_debug_info_extensions
= DEFAULT_GDB_EXTENSIONS
;
3699 #ifdef SDB_DEBUGGING_INFO
3700 if (write_symbols
!= NO_DEBUG
)
3702 else if (!strncmp (str
, "g", len
))
3703 write_symbols
= SDB_DEBUG
;
3704 else if (!strncmp (str
, "gdb", len
))
3705 write_symbols
= SDB_DEBUG
;
3706 else if (!strncmp (str
, "gcoff", len
))
3707 write_symbols
= SDB_DEBUG
;
3708 #endif /* SDB_DEBUGGING_INFO */
3709 #ifdef XCOFF_DEBUGGING_INFO
3710 if (write_symbols
!= NO_DEBUG
)
3712 else if (!strncmp (str
, "g", len
))
3713 write_symbols
= XCOFF_DEBUG
;
3714 else if (!strncmp (str
, "ggdb", len
))
3715 write_symbols
= XCOFF_DEBUG
;
3716 else if (!strncmp (str
, "gxcoff", len
))
3717 write_symbols
= XCOFF_DEBUG
;
3719 /* Always enable extensions for -ggdb or -gxcoff+,
3720 always disable for -gxcoff.
3721 For plain -g, use system-specific default. */
3722 if (write_symbols
== XCOFF_DEBUG
&& !strncmp (str
, "ggdb", len
)
3724 use_gnu_debug_info_extensions
= 1;
3725 else if (write_symbols
== XCOFF_DEBUG
&& !strcmp (str
, "gxcoff+"))
3726 use_gnu_debug_info_extensions
= 1;
3727 else if (write_symbols
== XCOFF_DEBUG
3728 && !strncmp (str
, "gxcoff", len
) && len
>= 2)
3729 use_gnu_debug_info_extensions
= 0;
3731 use_gnu_debug_info_extensions
= DEFAULT_GDB_EXTENSIONS
;
3733 if (write_symbols
== NO_DEBUG
)
3734 warning ("`-%s' option not supported on this version of GCC", str
);
3735 else if (level
== 0)
3736 write_symbols
= NO_DEBUG
;
3738 debug_info_level
= (enum debug_info_level
) level
;
3740 else if (!strcmp (str
, "o"))
3742 asm_file_name
= argv
[++i
];
3744 else if (str
[0] == 'G')
3746 g_switch_set
= TRUE
;
3747 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
3749 else if (!strncmp (str
, "aux-info", 8))
3751 flag_gen_aux_info
= 1;
3752 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
3755 error ("Invalid option `%s'", argv
[i
]);
3757 else if (argv
[i
][0] == '+')
3758 error ("Invalid option `%s'", argv
[i
]);
3763 /* Initialize for bytecode output. A good idea to do this as soon as
3764 possible after the "-f" options have been parsed. */
3765 if (output_bytecode
)
3767 #ifndef TARGET_SUPPORTS_BYTECODE
3768 /* Just die with a fatal error if not supported */
3769 fatal ("-fbytecode not supporter for this target");
3777 /* Inlining does not work if not optimizing,
3778 so force it not to be done. */
3782 /* The c_decode_option and lang_decode_option functions set
3783 this to `2' if -Wall is used, so we can avoid giving out
3784 lots of errors for people who don't realize what -Wall does. */
3785 if (warn_uninitialized
== 1)
3786 warning ("-Wuninitialized is not supported without -O");
3789 #if defined(DWARF_DEBUGGING_INFO)
3790 if (write_symbols
== DWARF_DEBUG
3791 && strcmp (language_string
, "GNU C++") == 0)
3793 warning ("-g option not supported for C++ on SVR4 systems");
3794 write_symbols
= NO_DEBUG
;
3796 #endif /* defined(DWARF_DEBUGGING_INFO) */
3798 #ifdef OVERRIDE_OPTIONS
3799 /* Some machines may reject certain combinations of options. */
3803 /* Unrolling all loops implies that standard loop unrolling must also
3805 if (flag_unroll_all_loops
)
3806 flag_unroll_loops
= 1;
3807 /* Loop unrolling requires that strength_reduction be on also. Silently
3808 turn on strength reduction here if it isn't already on. Also, the loop
3809 unrolling code assumes that cse will be run after loop, so that must
3810 be turned on also. */
3811 if (flag_unroll_loops
)
3813 flag_strength_reduce
= 1;
3814 flag_rerun_cse_after_loop
= 1;
3817 /* Warn about options that are not supported on this machine. */
3818 #ifndef INSN_SCHEDULING
3819 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
3820 warning ("instruction scheduling not supported on this target machine");
3823 if (flag_delayed_branch
)
3824 warning ("this target machine does not have delayed branches");
3827 /* If we are in verbose mode, write out the version and maybe all the
3828 option flags in use. */
3831 fprintf (stderr
, "%s version %s", language_string
, version_string
);
3832 #ifdef TARGET_VERSION
3837 #define __VERSION__ "[unknown]"
3839 fprintf (stderr
, " compiled by GNU C version %s.\n", __VERSION__
);
3841 fprintf (stderr
, " compiled by CC.\n");
3844 print_switch_values ();
3847 compile_file (filename
);
3853 char *lim
= (char *) sbrk (0);
3855 fprintf (stderr
, "Data size %d.\n",
3856 lim
- (char *) &environ
);
3860 system ("ps -l 1>&2");
3863 #endif /* not USG */
3865 #endif /* not VMS */
3866 #endif /* not OS2 */
3869 exit (FATAL_EXIT_CODE
);
3871 exit (FATAL_EXIT_CODE
);
3872 exit (SUCCESS_EXIT_CODE
);
3876 /* Decode -m switches. */
3878 /* Here is a table, controlled by the tm.h file, listing each -m switch
3879 and which bits in `target_switches' it should set or clear.
3880 If VALUE is positive, it is bits to set.
3881 If VALUE is negative, -VALUE is bits to clear.
3882 (The sign bit is not used so there is no confusion.) */
3884 struct {char *name
; int value
;} target_switches
[]
3887 /* This table is similar, but allows the switch to have a value. */
3889 #ifdef TARGET_OPTIONS
3890 struct {char *prefix
; char ** variable
;} target_options
[]
3894 /* Decode the switch -mNAME. */
3897 set_target_switch (name
)
3903 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3904 if (!strcmp (target_switches
[j
].name
, name
))
3906 if (target_switches
[j
].value
< 0)
3907 target_flags
&= ~-target_switches
[j
].value
;
3909 target_flags
|= target_switches
[j
].value
;
3913 #ifdef TARGET_OPTIONS
3915 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
3917 int len
= strlen (target_options
[j
].prefix
);
3918 if (!strncmp (target_options
[j
].prefix
, name
, len
))
3920 *target_options
[j
].variable
= name
+ len
;
3927 error ("Invalid option `%s'", name
);
3930 /* Variable used for communication between the following two routines. */
3932 static int line_position
;
3934 /* Print an option value and adjust the position in the line. */
3937 print_single_switch (type
, name
)
3940 fprintf (stderr
, " %s%s", type
, name
);
3942 line_position
+= strlen (type
) + strlen (name
) + 1;
3944 if (line_position
> 65)
3946 fprintf (stderr
, "\n\t");
3951 /* Print default target switches for -version. */
3954 print_switch_values ()
3958 fprintf (stderr
, "enabled:");
3961 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
3962 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
3963 print_single_switch ("-f", f_options
[j
].string
);
3965 for (j
= 0; j
< sizeof W_options
/ sizeof W_options
[0]; j
++)
3966 if (*W_options
[j
].variable
== W_options
[j
].on_value
)
3967 print_single_switch ("-W", W_options
[j
].string
);
3969 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3970 if (target_switches
[j
].name
[0] != '\0'
3971 && target_switches
[j
].value
> 0
3972 && ((target_switches
[j
].value
& target_flags
)
3973 == target_switches
[j
].value
))
3974 print_single_switch ("-m", target_switches
[j
].name
);
3976 fprintf (stderr
, "\n");