1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92-6, 1997 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, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, 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>
42 #include <sys/param.h>
43 /* This is for hpux. It is a real screw. They should change hpux. */
45 #include <sys/times.h>
46 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
47 #undef FFS /* Some systems define this in param.h. */
51 #include <sys/resource.h>
60 #include "insn-attr.h"
67 #ifdef XCOFF_DEBUGGING_INFO
72 /* The extra parameters substantially improve the I/O performance. */
74 vms_fopen (fname
, type
)
78 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
79 fixed arguments, which matches ANSI's specification but not VAXCRTL's
80 pre-ANSI implementation. This hack circumvents the mismatch problem. */
81 FILE *(*vmslib_fopen
)() = (FILE *(*)()) fopen
;
84 return (*vmslib_fopen
) (fname
, type
, "mbc=32",
85 "deq=64", "fop=tef", "shr=nil");
87 return (*vmslib_fopen
) (fname
, type
, "mbc=32");
89 #define fopen vms_fopen
92 #ifndef DEFAULT_GDB_EXTENSIONS
93 #define DEFAULT_GDB_EXTENSIONS 1
96 /* If more than one debugging type is supported, you must define
97 PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
99 This is one long line cause VAXC can't handle a \-newline. */
100 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
101 #ifndef PREFERRED_DEBUGGING_TYPE
102 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
103 #endif /* no PREFERRED_DEBUGGING_TYPE */
104 #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
105 so the following code needn't care. */
106 #ifdef DBX_DEBUGGING_INFO
107 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
109 #ifdef SDB_DEBUGGING_INFO
110 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
112 #ifdef DWARF_DEBUGGING_INFO
113 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
115 #ifdef DWARF2_DEBUGGING_INFO
116 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
118 #ifdef XCOFF_DEBUGGING_INFO
119 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
121 #endif /* More than one debugger format enabled. */
123 /* If still not defined, must have been because no debugging formats
125 #ifndef PREFERRED_DEBUGGING_TYPE
126 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
129 extern int rtx_equal_function_value_matters
;
131 #if ! (defined (VMS) || defined (OS2))
132 extern char **environ
;
134 extern char *version_string
, *language_string
;
136 /* Carry information from ASM_DECLARE_OBJECT_NAME
137 to ASM_FINISH_DECLARE_OBJECT. */
139 extern int size_directive_output
;
140 extern tree last_assemble_variable_decl
;
142 extern void init_lex ();
143 extern void init_decl_processing ();
144 extern void init_obstacks ();
145 extern void init_tree_codes ();
146 extern void init_rtl ();
147 extern void init_regs ();
148 extern void init_optabs ();
149 extern void init_stmt ();
150 extern void init_reg_sets ();
151 extern void dump_flow_info ();
152 extern void dump_sched_info ();
153 extern void dump_local_alloc ();
154 extern void regset_release_memory ();
156 void rest_of_decl_compilation ();
157 void error_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
158 void error_with_decl
PVPROTO((tree decl
, char *s
, ...));
159 void error_for_asm
PVPROTO((rtx insn
, char *s
, ...));
160 void error
PVPROTO((char *s
, ...));
161 void fatal
PVPROTO((char *s
, ...));
162 void warning_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
163 void warning_with_decl
PVPROTO((tree decl
, char *s
, ...));
164 void warning_for_asm
PVPROTO((rtx insn
, char *s
, ...));
165 void warning
PVPROTO((char *s
, ...));
166 void pedwarn
PVPROTO((char *s
, ...));
167 void pedwarn_with_decl
PVPROTO((tree decl
, char *s
, ...));
168 void pedwarn_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
169 void sorry
PVPROTO((char *s
, ...));
170 void really_sorry
PVPROTO((char *s
, ...));
175 void set_target_switch ();
176 static char *decl_name ();
178 void print_version ();
179 int print_single_switch ();
180 void print_switch_values ();
181 /* Length of line when printing switch values. */
185 extern char *sbrk ();
188 /* Name of program invoked, sans directories. */
192 /* Copy of arguments to main. */
196 /* Name of current original source file (what was input to cpp).
197 This comes from each #-command in the actual input. */
199 char *input_filename
;
201 /* Name of top-level original source file (what was input to cpp).
202 This comes from the #-command at the beginning of the actual input.
203 If there isn't any there, then this is the cc1 input file name. */
205 char *main_input_filename
;
207 /* Stream for reading from the input file. */
211 /* Current line number in real source file. */
215 /* Stack of currently pending input files. */
217 struct file_stack
*input_file_stack
;
219 /* Incremented on each change to input_file_stack. */
220 int input_file_stack_tick
;
222 /* FUNCTION_DECL for function now being parsed or compiled. */
224 extern tree current_function_decl
;
226 /* Name to use as base of names for dump output files. */
228 char *dump_base_name
;
230 /* Bit flags that specify the machine subtype we are compiling for.
231 Bits are tested using macros TARGET_... defined in the tm.h file
232 and set by `-m...' switches. Must be defined in rtlanal.c. */
234 extern int target_flags
;
236 /* Flags saying which kinds of debugging dump have been requested. */
239 int rtl_dump_and_exit
= 0;
240 int jump_opt_dump
= 0;
244 int branch_prob_dump
= 0;
246 int combine_dump
= 0;
248 int local_reg_dump
= 0;
249 int global_reg_dump
= 0;
251 int jump2_opt_dump
= 0;
252 int dbr_sched_dump
= 0;
253 int flag_print_asm_name
= 0;
254 int stack_reg_dump
= 0;
256 /* Name for output file of assembly code, specified with -o. */
260 /* Value of the -G xx switch, and whether it was passed or not. */
264 /* Type(s) of debugging information we are producing (if any).
265 See flags.h for the definitions of the different possible
266 types of debugging information. */
267 enum debug_info_type write_symbols
= NO_DEBUG
;
269 /* Level of debugging information we are producing. See flags.h
270 for the definitions of the different possible levels. */
271 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
273 /* Nonzero means use GNU-only extensions in the generated symbolic
274 debugging information. */
275 /* Currently, this only has an effect when write_symbols is set to
276 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
277 int use_gnu_debug_info_extensions
= 0;
279 /* Nonzero means do optimizations. -O.
280 Particular numeric values stand for particular amounts of optimization;
281 thus, -O2 stores 2 here. However, the optimizations beyond the basic
282 ones are not controlled directly by this variable. Instead, they are
283 controlled by individual `flag_...' variables that are defaulted
284 based on this variable. */
288 /* Number of error messages and warning messages so far. */
291 int warningcount
= 0;
294 /* Flag to output bytecode instead of native assembler */
295 int output_bytecode
= 0;
297 /* Pointer to function to compute the name to use to print a declaration.
298 DECL is the declaration in question.
299 VERBOSITY determines what information will be printed:
300 0: DECL_NAME, demangled as necessary.
301 1: and scope information.
302 2: and any other information that might be interesting, such as function
303 parameter types in C++. */
305 char *(*decl_printable_name
) (/* tree decl, int verbosity */);
307 /* Pointer to function to compute rtl for a language-specific tree code. */
309 struct rtx_def
*(*lang_expand_expr
) ();
311 /* Pointer to function to finish handling an incomplete decl at the
312 end of compilation. */
314 void (*incomplete_decl_finalize_hook
) () = 0;
316 /* Highest label number used at the end of reload. */
318 int max_label_num_after_reload
;
320 /* Nonzero if generating code to do profiling. */
322 int profile_flag
= 0;
324 /* Nonzero if generating code to do profiling on a line-by-line basis. */
326 int profile_block_flag
;
328 /* Nonzero if generating code to profile program flow graph arcs. */
330 int profile_arc_flag
= 0;
332 /* Nonzero if generating info for gcov to calculate line test coverage. */
334 int flag_test_coverage
= 0;
336 /* Nonzero indicates that branch taken probabilities should be calculated. */
338 int flag_branch_probabilities
= 0;
340 /* Nonzero for -pedantic switch: warn about anything
341 that standard spec forbids. */
345 /* Temporarily suppress certain warnings.
346 This is set while reading code from a system header file. */
348 int in_system_header
= 0;
350 /* Nonzero means do stupid register allocation.
351 Currently, this is 1 if `optimize' is 0. */
353 int obey_regdecls
= 0;
355 /* Don't print functions as they are compiled and don't print
356 times taken by the various passes. -quiet. */
362 /* Nonzero means `char' should be signed. */
364 int flag_signed_char
;
366 /* Nonzero means give an enum type only as many bytes as it needs. */
368 int flag_short_enums
;
370 /* Nonzero for -fcaller-saves: allocate values in regs that need to
371 be saved across function calls, if that produces overall better code.
372 Optional now, so people can test it. */
374 #ifdef DEFAULT_CALLER_SAVES
375 int flag_caller_saves
= 1;
377 int flag_caller_saves
= 0;
380 /* Nonzero if structures and unions should be returned in memory.
382 This should only be defined if compatibility with another compiler or
383 with an ABI is needed, because it results in slower code. */
385 #ifndef DEFAULT_PCC_STRUCT_RETURN
386 #define DEFAULT_PCC_STRUCT_RETURN 1
389 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
391 int flag_pcc_struct_return
= DEFAULT_PCC_STRUCT_RETURN
;
393 /* Nonzero for -fforce-mem: load memory value into a register
394 before arithmetic on it. This makes better cse but slower compilation. */
396 int flag_force_mem
= 0;
398 /* Nonzero for -fforce-addr: load memory address into a register before
399 reference to memory. This makes better cse but slower compilation. */
401 int flag_force_addr
= 0;
403 /* Nonzero for -fdefer-pop: don't pop args after each function call;
404 instead save them up to pop many calls' args with one insns. */
406 int flag_defer_pop
= 0;
408 /* Nonzero for -ffloat-store: don't allocate floats and doubles
409 in extended-precision registers. */
411 int flag_float_store
= 0;
413 /* Nonzero for -fcse-follow-jumps:
414 have cse follow jumps to do a more extensive job. */
416 int flag_cse_follow_jumps
;
418 /* Nonzero for -fcse-skip-blocks:
419 have cse follow a branch around a block. */
420 int flag_cse_skip_blocks
;
422 /* Nonzero for -fexpensive-optimizations:
423 perform miscellaneous relatively-expensive optimizations. */
424 int flag_expensive_optimizations
;
426 /* Nonzero for -fthread-jumps:
427 have jump optimize output of loop. */
429 int flag_thread_jumps
;
431 /* Nonzero enables strength-reduction in loop.c. */
433 int flag_strength_reduce
= 0;
435 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
436 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
437 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
440 int flag_unroll_loops
;
442 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
443 This is generally not a win. */
445 int flag_unroll_all_loops
;
447 /* Nonzero for -fwritable-strings:
448 store string constants in data segment and don't uniquize them. */
450 int flag_writable_strings
= 0;
452 /* Nonzero means don't put addresses of constant functions in registers.
453 Used for compiling the Unix kernel, where strange substitutions are
454 done on the assembly output. */
456 int flag_no_function_cse
= 0;
458 /* Nonzero for -fomit-frame-pointer:
459 don't make a frame pointer in simple functions that don't require one. */
461 int flag_omit_frame_pointer
= 0;
463 /* Nonzero means place each function into its own section on those platforms
464 which support arbitrary section names and unlimited numbers of sections. */
466 int flag_function_sections
= 0;
468 /* Nonzero to inhibit use of define_optimization peephole opts. */
470 int flag_no_peephole
= 0;
472 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
473 operations in the interest of optimization. For example it allows
474 GCC to assume arguments to sqrt are nonnegative numbers, allowing
475 faster code for sqrt to be generated. */
477 int flag_fast_math
= 0;
479 /* Nonzero means all references through pointers are volatile. */
483 /* Nonzero means treat all global and extern variables as global. */
485 int flag_volatile_global
;
487 /* Nonzero means just do syntax checking; don't output anything. */
489 int flag_syntax_only
= 0;
491 /* Nonzero means to rerun cse after loop optimization. This increases
492 compilation time about 20% and picks up a few more common expressions. */
494 static int flag_rerun_cse_after_loop
;
496 /* Nonzero for -finline-functions: ok to inline functions that look like
497 good inline candidates. */
499 int flag_inline_functions
;
501 /* Nonzero for -fkeep-inline-functions: even if we make a function
502 go inline everywhere, keep its definition around for debugging
505 int flag_keep_inline_functions
;
507 /* Nonzero means that functions will not be inlined. */
511 /* Nonzero means that we should emit static const variables
512 regardless of whether or not optimization is turned on. */
514 int flag_keep_static_consts
= 1;
516 /* Nonzero means we should be saving declaration info into a .X file. */
518 int flag_gen_aux_info
= 0;
520 /* Specified name of aux-info file. */
522 static char *aux_info_file_name
;
524 /* Nonzero means make the text shared if supported. */
526 int flag_shared_data
;
528 /* Nonzero means schedule into delayed branch slots if supported. */
530 int flag_delayed_branch
;
532 /* Nonzero if we are compiling pure (sharable) code.
533 Value is 1 if we are doing reasonable (i.e. simple
534 offset into offset table) pic. Value is 2 if we can
535 only perform register offsets. */
539 /* Nonzero means generate extra code for exception handling and enable
540 exception handling. */
542 int flag_exceptions
= 1;
544 /* Nonzero means don't place uninitialized global data in common storage
549 /* Nonzero means pretend it is OK to examine bits of target floats,
550 even if that isn't true. The resulting code will have incorrect constants,
551 but the same series of instructions that the native compiler would make. */
553 int flag_pretend_float
;
555 /* Nonzero means change certain warnings into errors.
556 Usually these are warnings about failure to conform to some standard. */
558 int flag_pedantic_errors
= 0;
560 /* flag_schedule_insns means schedule insns within basic blocks (before
562 flag_schedule_insns_after_reload means schedule insns after
565 int flag_schedule_insns
= 0;
566 int flag_schedule_insns_after_reload
= 0;
568 /* -finhibit-size-directive inhibits output of .size for ELF.
569 This is used only for compiling crtstuff.c,
570 and it may be extended to other effects
571 needed for crtstuff.c on other systems. */
572 int flag_inhibit_size_directive
= 0;
574 /* -fverbose-asm causes extra commentary information to be produced in
575 the generated assembly code (to make it more readable). This option
576 is generally only of use to those who actually need to read the
577 generated assembly code (perhaps while debugging the compiler itself).
578 -fverbose-asm is the default. -fno-verbose-asm causes the extra information
579 to be omitted and is useful when comparing two assembler files. */
581 int flag_verbose_asm
= 1;
583 /* -dA causes debug commentary information to be produced in
584 the generated assembly code (to make it more readable). This option
585 is generally only of use to those who actually need to read the
586 generated assembly code (perhaps while debugging the compiler itself).
587 Currently, this switch is only used by dwarfout.c; however, it is intended
588 to be a catchall for printing debug information in the assembler file. */
590 int flag_debug_asm
= 0;
592 /* -fgnu-linker specifies use of the GNU linker for initializations.
593 (Or, more generally, a linker that handles initializations.)
594 -fno-gnu-linker says that collect2 will be used. */
596 int flag_gnu_linker
= 0;
598 int flag_gnu_linker
= 1;
601 /* Tag all structures with __attribute__(packed) */
602 int flag_pack_struct
= 0;
604 /* Table of language-independent -f options.
605 STRING is the option name. VARIABLE is the address of the variable.
606 ON_VALUE is the value to store in VARIABLE
607 if `-fSTRING' is seen as an option.
608 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
610 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
612 {"float-store", &flag_float_store
, 1},
613 {"volatile", &flag_volatile
, 1},
614 {"volatile-global", &flag_volatile_global
, 1},
615 {"defer-pop", &flag_defer_pop
, 1},
616 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
617 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
618 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
619 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
620 {"thread-jumps", &flag_thread_jumps
, 1},
621 {"strength-reduce", &flag_strength_reduce
, 1},
622 {"unroll-loops", &flag_unroll_loops
, 1},
623 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
624 {"writable-strings", &flag_writable_strings
, 1},
625 {"peephole", &flag_no_peephole
, 0},
626 {"force-mem", &flag_force_mem
, 1},
627 {"force-addr", &flag_force_addr
, 1},
628 {"function-cse", &flag_no_function_cse
, 0},
629 {"inline-functions", &flag_inline_functions
, 1},
630 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
631 {"inline", &flag_no_inline
, 0},
632 {"keep-static-consts", &flag_keep_static_consts
, 1},
633 {"syntax-only", &flag_syntax_only
, 1},
634 {"shared-data", &flag_shared_data
, 1},
635 {"caller-saves", &flag_caller_saves
, 1},
636 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
637 {"reg-struct-return", &flag_pcc_struct_return
, 0},
638 {"delayed-branch", &flag_delayed_branch
, 1},
639 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
640 {"pretend-float", &flag_pretend_float
, 1},
641 {"schedule-insns", &flag_schedule_insns
, 1},
642 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
643 {"pic", &flag_pic
, 1},
644 {"PIC", &flag_pic
, 2},
645 {"exceptions", &flag_exceptions
, 1},
646 {"sjlj-exceptions", &exceptions_via_longjmp
, 1},
647 {"asynchronous-exceptions", &asynchronous_exceptions
, 1},
648 {"profile-arcs", &profile_arc_flag
, 1},
649 {"test-coverage", &flag_test_coverage
, 1},
650 {"branch-probabilities", &flag_branch_probabilities
, 1},
651 {"fast-math", &flag_fast_math
, 1},
652 {"common", &flag_no_common
, 0},
653 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
654 {"function-sections", &flag_function_sections
, 1},
655 {"verbose-asm", &flag_verbose_asm
, 1},
656 {"gnu-linker", &flag_gnu_linker
, 1},
657 {"pack-struct", &flag_pack_struct
, 1},
658 {"bytecode", &output_bytecode
, 1}
661 /* Table of language-specific options. */
663 char *lang_options
[] =
666 "-fallow-single-precision",
668 "-fsigned-bitfields",
669 "-funsigned-bitfields",
670 "-fno-signed-bitfields",
671 "-fno-unsigned-bitfields",
675 "-fno-unsigned-char",
691 "-fno-cond-mismatch",
692 "-fdollars-in-identifiers",
693 "-fno-dollars-in-identifiers",
702 "-Wbad-function-cast",
703 "-Wno-bad-function-cast",
707 "-Wno-char-subscripts",
723 "-Wno-missing-braces",
724 "-Wmissing-declarations",
725 "-Wno-missing-declarations",
726 "-Wmissing-prototypes",
727 "-Wno-missing-prototypes",
729 "-Wno-nested-externs",
733 "-Wno-pointer-arith",
735 "-Wno-redundant-decls",
738 "-Wstrict-prototypes",
739 "-Wno-strict-prototypes",
747 "-Wno-write-strings",
749 /* these are for obj c */
765 /* Options controlling warnings */
767 /* Don't print warning messages. -w. */
769 int inhibit_warnings
= 0;
771 /* Print various extra warnings. -W. */
773 int extra_warnings
= 0;
775 /* Treat warnings as errors. -Werror. */
777 int warnings_are_errors
= 0;
779 /* Nonzero to warn about unused local variables. */
783 /* Nonzero to warn about variables used before they are initialized. */
785 int warn_uninitialized
;
787 /* Nonzero means warn about all declarations which shadow others. */
791 /* Warn if a switch on an enum fails to have a case for every enum value. */
795 /* Nonzero means warn about function definitions that default the return type
796 or that use a null return and have a return-type other than void. */
798 int warn_return_type
;
800 /* Nonzero means warn about pointer casts that increase the required
801 alignment of the target type (and might therefore lead to a crash
802 due to a misaligned access). */
806 /* Nonzero means warn about any identifiers that match in the first N
807 characters. The value N is in `id_clash_len'. */
810 unsigned id_clash_len
;
812 /* Nonzero means warn about any objects definitions whose size is larger
813 than N bytes. Also want about function definitions whose returned
814 values are larger than N bytes. The value N is in `larger_than_size'. */
816 int warn_larger_than
;
817 unsigned larger_than_size
;
819 /* Nonzero means warn if inline function is too large. */
823 /* Warn if a function returns an aggregate,
824 since there are often incompatible calling conventions for doing this. */
826 int warn_aggregate_return
;
828 /* Likewise for -W. */
830 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
832 {"unused", &warn_unused
, 1},
833 {"error", &warnings_are_errors
, 1},
834 {"shadow", &warn_shadow
, 1},
835 {"switch", &warn_switch
, 1},
836 {"aggregate-return", &warn_aggregate_return
, 1},
837 {"cast-align", &warn_cast_align
, 1},
838 {"uninitialized", &warn_uninitialized
, 1},
839 {"inline", &warn_inline
, 1}
842 /* Output files for assembler code (real compiler output)
843 and debugging dumps. */
848 FILE *jump_opt_dump_file
;
850 FILE *loop_dump_file
;
851 FILE *cse2_dump_file
;
852 FILE *branch_prob_dump_file
;
853 FILE *flow_dump_file
;
854 FILE *combine_dump_file
;
855 FILE *sched_dump_file
;
856 FILE *local_reg_dump_file
;
857 FILE *global_reg_dump_file
;
858 FILE *sched2_dump_file
;
859 FILE *jump2_opt_dump_file
;
860 FILE *dbr_sched_dump_file
;
861 FILE *stack_reg_dump_file
;
863 /* Time accumulators, to count the total time spent in various passes. */
867 int integration_time
;
872 int branch_prob_time
;
876 int local_alloc_time
;
877 int global_alloc_time
;
880 int shorten_branch_time
;
886 /* Return time used so far, in microseconds. */
896 struct rusage rusage
;
901 int proc_system_time
;
903 int child_system_time
;
915 return (clock() * 1000);
916 #else /* not _WIN32 */
919 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
922 getrusage (0, &rusage
);
923 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
924 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
927 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
933 #define TIMEVAR(VAR, BODY) \
934 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
937 print_time (str
, total
)
942 "time in %s: %d.%06d\n",
943 str
, total
/ 1000000, total
% 1000000);
946 /* Count an error or warning. Return 1 if the message should be printed. */
949 count_error (warningp
)
952 if (warningp
&& inhibit_warnings
)
955 if (warningp
&& !warnings_are_errors
)
959 static int warning_message
= 0;
961 if (warningp
&& !warning_message
)
963 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
972 /* Print a fatal error message. NAME is the text.
973 Also include a system error message based on `errno'. */
976 pfatal_with_name (name
)
979 fprintf (stderr
, "%s: ", progname
);
981 exit (FATAL_EXIT_CODE
);
985 fatal_io_error (name
)
988 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
989 exit (FATAL_EXIT_CODE
);
992 /* Called to give a better error message for a bad insn rather than
993 just calling abort(). */
996 fatal_insn (message
, insn
)
1000 if (!output_bytecode
)
1006 fflush (asm_out_file
);
1008 fflush (aux_info_file
);
1010 fflush (rtl_dump_file
);
1011 if (jump_opt_dump_file
)
1012 fflush (jump_opt_dump_file
);
1014 fflush (cse_dump_file
);
1016 fflush (loop_dump_file
);
1018 fflush (cse2_dump_file
);
1020 fflush (flow_dump_file
);
1021 if (combine_dump_file
)
1022 fflush (combine_dump_file
);
1023 if (sched_dump_file
)
1024 fflush (sched_dump_file
);
1025 if (local_reg_dump_file
)
1026 fflush (local_reg_dump_file
);
1027 if (global_reg_dump_file
)
1028 fflush (global_reg_dump_file
);
1029 if (sched2_dump_file
)
1030 fflush (sched2_dump_file
);
1031 if (jump2_opt_dump_file
)
1032 fflush (jump2_opt_dump_file
);
1033 if (dbr_sched_dump_file
)
1034 fflush (dbr_sched_dump_file
);
1035 if (stack_reg_dump_file
)
1036 fflush (stack_reg_dump_file
);
1042 /* Called to give a better error message when we don't have an insn to match
1043 what we are looking for or if the insn's constraints aren't satisfied,
1044 rather than just calling abort(). */
1047 fatal_insn_not_found (insn
)
1050 if (INSN_CODE (insn
) < 0)
1051 fatal_insn ("internal error--unrecognizable insn:", insn
);
1053 fatal_insn ("internal error--insn does not satisfy its constraints:", insn
);
1056 /* This is the default decl_printable_name function. */
1059 decl_name (decl
, verbosity
)
1063 return IDENTIFIER_POINTER (DECL_NAME (decl
));
1066 static int need_error_newline
;
1068 /* Function of last error message;
1069 more generally, function such that if next error message is in it
1070 then we don't have to mention the function name. */
1071 static tree last_error_function
= NULL
;
1073 /* Used to detect when input_file_stack has changed since last described. */
1074 static int last_error_tick
;
1076 /* Called when the start of a function definition is parsed,
1077 this function prints on stderr the name of the function. */
1080 announce_function (decl
)
1085 if (rtl_dump_and_exit
)
1086 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1088 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, 2));
1090 need_error_newline
= 1;
1091 last_error_function
= current_function_decl
;
1095 /* The default function to print out name of current function that caused
1099 default_print_error_function (file
)
1102 if (last_error_function
!= current_function_decl
)
1104 char *kind
= "function";
1105 if (current_function_decl
!= 0
1106 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
1110 fprintf (stderr
, "%s: ", file
);
1112 if (current_function_decl
== NULL
)
1113 fprintf (stderr
, "At top level:\n");
1116 char *name
= (*decl_printable_name
) (current_function_decl
, 2);
1117 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
1120 last_error_function
= current_function_decl
;
1124 /* Called by report_error_function to print out function name.
1125 * Default may be overridden by language front-ends. */
1127 void (*print_error_function
) PROTO((char *)) = default_print_error_function
;
1129 /* Prints out, if necessary, the name of the current function
1130 that caused an error. Called from all error and warning functions. */
1133 report_error_function (file
)
1136 struct file_stack
*p
;
1138 if (need_error_newline
)
1140 fprintf (stderr
, "\n");
1141 need_error_newline
= 0;
1144 (*print_error_function
) (file
);
1146 if (input_file_stack
&& input_file_stack
->next
!= 0
1147 && input_file_stack_tick
!= last_error_tick
1148 && file
== input_filename
)
1150 fprintf (stderr
, "In file included");
1151 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1153 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
1155 fprintf (stderr
, ",\n ");
1157 fprintf (stderr
, ":\n");
1158 last_error_tick
= input_file_stack_tick
;
1162 /* Print a message. */
1165 vmessage (prefix
, s
, ap
)
1171 fprintf (stderr
, "%s: ", prefix
);
1174 vfprintf (stderr
, s
, ap
);
1177 HOST_WIDE_INT v1
= va_arg(ap
, HOST_WIDE_INT
);
1178 HOST_WIDE_INT v2
= va_arg(ap
, HOST_WIDE_INT
);
1179 HOST_WIDE_INT v3
= va_arg(ap
, HOST_WIDE_INT
);
1180 HOST_WIDE_INT v4
= va_arg(ap
, HOST_WIDE_INT
);
1181 fprintf (stderr
, s
, v1
, v2
, v3
, v4
);
1186 /* Print a message relevant to line LINE of file FILE. */
1189 v_message_with_file_and_line (file
, line
, prefix
, s
, ap
)
1197 fprintf (stderr
, "%s:%d: ", file
, line
);
1199 fprintf (stderr
, "%s: ", progname
);
1201 vmessage (prefix
, s
, ap
);
1202 fputc ('\n', stderr
);
1205 /* Print a message relevant to the given DECL. */
1208 v_message_with_decl (decl
, prefix
, s
, ap
)
1216 fprintf (stderr
, "%s:%d: ",
1217 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1220 fprintf (stderr
, "%s: ", prefix
);
1222 /* Do magic to get around lack of varargs support for insertion
1223 of arguments into existing list. We know that the decl is first;
1224 we ass_u_me that it will be printed with "%s". */
1226 for (p
= s
; *p
; ++p
)
1230 if (*(p
+ 1) == '%')
1237 if (p
> s
) /* Print the left-hand substring. */
1239 char fmt
[sizeof "%.255s"];
1242 if (width
> 255L) width
= 255L; /* arbitrary */
1243 sprintf (fmt
, "%%.%lds", width
);
1244 fprintf (stderr
, fmt
, s
);
1247 if (*p
== '%') /* Print the name. */
1249 char *n
= (DECL_NAME (decl
)
1250 ? (*decl_printable_name
) (decl
, 2)
1256 if (isalpha (*(p
- 1) & 0xFF))
1261 if (*p
) /* Print the rest of the message. */
1262 vmessage ((char *)NULL
, p
, ap
);
1264 fputc ('\n', stderr
);
1267 /* Figure file and line of the given INSN. */
1270 file_and_line_for_asm (insn
, pfile
, pline
)
1275 rtx body
= PATTERN (insn
);
1278 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1279 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1280 asmop
= SET_SRC (body
);
1281 else if (GET_CODE (body
) == ASM_OPERANDS
)
1283 else if (GET_CODE (body
) == PARALLEL
1284 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1285 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1286 else if (GET_CODE (body
) == PARALLEL
1287 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1288 asmop
= XVECEXP (body
, 0, 0);
1294 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1295 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1299 *pfile
= input_filename
;
1304 /* Report an error at line LINE of file FILE. */
1307 v_error_with_file_and_line (file
, line
, s
, ap
)
1314 report_error_function (file
);
1315 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1319 error_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1331 file
= va_arg (ap
, char *);
1332 line
= va_arg (ap
, int);
1333 s
= va_arg (ap
, char *);
1336 v_error_with_file_and_line (file
, line
, s
, ap
);
1340 /* Report an error at the declaration DECL.
1341 S is a format string which uses %s to substitute the declaration
1342 name; subsequent substitutions are a la printf. */
1345 v_error_with_decl (decl
, s
, ap
)
1351 report_error_function (DECL_SOURCE_FILE (decl
));
1352 v_message_with_decl (decl
, (char *)NULL
, s
, ap
);
1356 error_with_decl
VPROTO((tree decl
, char *s
, ...))
1367 decl
= va_arg (ap
, tree
);
1368 s
= va_arg (ap
, char *);
1371 v_error_with_decl (decl
, s
, ap
);
1375 /* Report an error at the line number of the insn INSN.
1376 This is used only when INSN is an `asm' with operands,
1377 and each ASM_OPERANDS records its own source file and line. */
1380 v_error_for_asm (insn
, s
, ap
)
1389 file_and_line_for_asm (insn
, &file
, &line
);
1390 report_error_function (file
);
1391 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1395 error_for_asm
VPROTO((rtx insn
, char *s
, ...))
1406 insn
= va_arg (ap
, rtx
);
1407 s
= va_arg (ap
, char *);
1410 v_error_for_asm (insn
, s
, ap
);
1414 /* Report an error at the current line number. */
1421 v_error_with_file_and_line (input_filename
, lineno
, s
, ap
);
1425 error
VPROTO((char *s
, ...))
1435 s
= va_arg (ap
, char *);
1442 /* Report a fatal error at the current line number. */
1450 exit (FATAL_EXIT_CODE
);
1454 fatal
VPROTO((char *s
, ...))
1464 s
= va_arg (ap
, char *);
1471 /* Report a warning at line LINE of file FILE. */
1474 v_warning_with_file_and_line (file
, line
, s
, ap
)
1480 if (count_error (1))
1482 report_error_function (file
);
1483 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1488 warning_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1500 file
= va_arg (ap
, char *);
1501 line
= va_arg (ap
, int);
1502 s
= va_arg (ap
, char *);
1505 v_warning_with_file_and_line (file
, line
, s
, ap
);
1509 /* Report a warning at the declaration DECL.
1510 S is a format string which uses %s to substitute the declaration
1511 name; subsequent substitutions are a la printf. */
1514 v_warning_with_decl (decl
, s
, ap
)
1519 if (count_error (1))
1521 report_error_function (DECL_SOURCE_FILE (decl
));
1522 v_message_with_decl (decl
, "warning", s
, ap
);
1527 warning_with_decl
VPROTO((tree decl
, char *s
, ...))
1538 decl
= va_arg (ap
, tree
);
1539 s
= va_arg (ap
, char *);
1542 v_warning_with_decl (decl
, s
, ap
);
1546 /* Report a warning at the line number of the insn INSN.
1547 This is used only when INSN is an `asm' with operands,
1548 and each ASM_OPERANDS records its own source file and line. */
1551 v_warning_for_asm (insn
, s
, ap
)
1556 if (count_error (1))
1561 file_and_line_for_asm (insn
, &file
, &line
);
1562 report_error_function (file
);
1563 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1568 warning_for_asm
VPROTO((rtx insn
, char *s
, ...))
1579 insn
= va_arg (ap
, rtx
);
1580 s
= va_arg (ap
, char *);
1583 v_warning_for_asm (insn
, s
, ap
);
1587 /* Report a warning at the current line number. */
1594 v_warning_with_file_and_line (input_filename
, lineno
, s
, ap
);
1598 warning
VPROTO((char *s
, ...))
1608 s
= va_arg (ap
, char *);
1615 /* These functions issue either warnings or errors depending on
1616 -pedantic-errors. */
1623 if (flag_pedantic_errors
)
1630 pedwarn
VPROTO((char *s
, ...))
1640 s
= va_arg (ap
, char *);
1648 v_pedwarn_with_decl (decl
, s
, ap
)
1653 /* We don't want -pedantic-errors to cause the compilation to fail from
1654 "errors" in system header files. Sometimes fixincludes can't fix what's
1655 broken (eg: unsigned char bitfields - fixing it may change the alignment
1656 which will cause programs to mysteriously fail because the C library
1657 or kernel uses the original layout). There's no point in issuing a
1658 warning either, it's just unnecessary noise. */
1660 if (! DECL_IN_SYSTEM_HEADER (decl
))
1662 if (flag_pedantic_errors
)
1663 v_error_with_decl (decl
, s
, ap
);
1665 v_warning_with_decl (decl
, s
, ap
);
1670 pedwarn_with_decl
VPROTO((tree decl
, char *s
, ...))
1681 decl
= va_arg (ap
, tree
);
1682 s
= va_arg (ap
, char *);
1685 v_pedwarn_with_decl (decl
, s
, ap
);
1690 v_pedwarn_with_file_and_line (file
, line
, s
, ap
)
1696 if (flag_pedantic_errors
)
1697 v_error_with_file_and_line (file
, line
, s
, ap
);
1699 v_warning_with_file_and_line (file
, line
, s
, ap
);
1703 pedwarn_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1715 file
= va_arg (ap
, char *);
1716 line
= va_arg (ap
, int);
1717 s
= va_arg (ap
, char *);
1720 v_pedwarn_with_file_and_line (file
, line
, s
, ap
);
1724 /* Apologize for not implementing some feature. */
1733 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1735 fprintf (stderr
, "%s: ", progname
);
1736 vmessage ("sorry, not implemented", s
, ap
);
1737 fputc ('\n', stderr
);
1741 sorry
VPROTO((char *s
, ...))
1751 s
= va_arg (ap
, char *);
1758 /* Apologize for not implementing some feature, then quit. */
1761 v_really_sorry (s
, ap
)
1767 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1769 fprintf (stderr
, "%s: ", progname
);
1770 vmessage ("sorry, not implemented", s
, ap
);
1771 fatal (" (fatal)\n");
1775 really_sorry
VPROTO((char *s
, ...))
1785 s
= va_arg (ap
, char *);
1788 v_really_sorry (s
, ap
);
1792 /* More 'friendly' abort that prints the line and file.
1793 config.h can #define abort fancy_abort if you like that sort of thing.
1795 I don't think this is actually a good idea.
1796 Other sorts of crashes will look a certain way.
1797 It is a good thing if crashes from calling abort look the same way.
1803 fatal ("internal gcc abort");
1806 /* This calls abort and is used to avoid problems when abort if a macro.
1807 It is used when we need to pass the address of abort. */
1815 /* When `malloc.c' is compiled with `rcheck' defined,
1816 it calls this function to report clobberage. */
1824 /* Same as `malloc' but report error if no memory available. */
1830 register char *value
= (char *) malloc (size
);
1831 if (value
== 0 && size
!= 0)
1832 fatal ("virtual memory exhausted");
1836 /* Same as `realloc' but report error if no memory available. */
1839 xrealloc (ptr
, size
)
1843 char *result
= (char *) realloc (ptr
, size
);
1845 fatal ("virtual memory exhausted");
1849 /* Same as `strdup' but report error if no memory available. */
1855 register char *result
= (char *) malloc (strlen (s
) + 1);
1858 fatal ("virtual memory exhausted");
1863 /* Return the logarithm of X, base 2, considering X unsigned,
1864 if X is a power of 2. Otherwise, returns -1.
1866 This should be used via the `exact_log2' macro. */
1870 register unsigned HOST_WIDE_INT x
;
1872 register int log
= 0;
1873 /* Test for 0 or a power of 2. */
1874 if (x
== 0 || x
!= (x
& -x
))
1876 while ((x
>>= 1) != 0)
1881 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1882 If X is 0, return -1.
1884 This should be used via the floor_log2 macro. */
1888 register unsigned HOST_WIDE_INT x
;
1890 register int log
= -1;
1897 static int float_handler_set
;
1899 jmp_buf float_handler
;
1901 /* Signals actually come here. */
1904 float_signal (signo
)
1905 /* If this is missing, some compilers complain. */
1908 if (float_handled
== 0)
1910 #if defined (USG) || defined (hpux)
1911 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1914 signal (SIGFPE
, float_signal
);
1915 longjmp (float_handler
, 1);
1918 /* Specify where to longjmp to when a floating arithmetic error happens.
1919 If HANDLER is 0, it means don't handle the errors any more. */
1922 set_float_handler (handler
)
1925 float_handled
= (handler
!= 0);
1927 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1929 if (float_handled
&& ! float_handler_set
)
1931 signal (SIGFPE
, float_signal
);
1932 float_handler_set
= 1;
1936 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1937 error happens, pushing the previous specification into OLD_HANDLER.
1938 Return an indication of whether there was a previous handler in effect. */
1941 push_float_handler (handler
, old_handler
)
1942 jmp_buf handler
, old_handler
;
1944 int was_handled
= float_handled
;
1948 bcopy ((char *) float_handler
, (char *) old_handler
,
1949 sizeof (float_handler
));
1951 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1955 /* Restore the previous specification of whether and where to longjmp to
1956 when a floating arithmetic error happens. */
1959 pop_float_handler (handled
, handler
)
1963 float_handled
= handled
;
1965 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1968 /* Handler for SIGPIPE. */
1972 /* If this is missing, some compilers complain. */
1975 fatal ("output pipe has been closed");
1978 /* Strip off a legitimate source ending from the input string NAME of
1979 length LEN. Rather than having to know the names used by all of
1980 our front ends, we strip off an ending of a period followed by one,
1981 two, or three characters. */
1984 strip_off_ending (name
, len
)
1988 if (len
> 2 && name
[len
- 2] == '.')
1989 name
[len
- 2] = '\0';
1990 else if (len
> 3 && name
[len
- 3] == '.')
1991 name
[len
- 3] = '\0';
1992 else if (len
> 4 && name
[len
- 4] == '.')
1993 name
[len
- 4] = '\0';
1996 /* Output a quoted string. */
1999 output_quoted_string (asm_file
, string
)
2005 putc ('\"', asm_file
);
2006 while ((c
= *string
++) != 0)
2008 if (c
== '\"' || c
== '\\')
2009 putc ('\\', asm_file
);
2012 putc ('\"', asm_file
);
2015 /* Output a file name in the form wanted by System V. */
2018 output_file_directive (asm_file
, input_name
)
2022 int len
= strlen (input_name
);
2023 char *na
= input_name
+ len
;
2025 /* NA gets INPUT_NAME sans directory names. */
2026 while (na
> input_name
)
2033 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2034 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
2036 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2037 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
2039 fprintf (asm_file
, "\t.file\t");
2040 output_quoted_string (asm_file
, na
);
2041 fputc ('\n', asm_file
);
2046 /* Routine to build language identifier for object file. */
2049 output_lang_identify (asm_out_file
)
2052 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2053 char *s
= (char *) alloca (len
);
2054 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
2055 ASM_OUTPUT_LABEL (asm_out_file
, s
);
2058 /* Routine to open a dump file. */
2061 open_dump_file (base_name
, suffix
)
2066 char *dumpname
= (char *) alloca (strlen (base_name
) + strlen (suffix
) + 1);
2068 strcpy (dumpname
, base_name
);
2069 strcat (dumpname
, suffix
);
2070 f
= fopen (dumpname
, "w");
2072 pfatal_with_name (dumpname
);
2076 /* Compile an entire file of output from cpp, named NAME.
2077 Write a file of assembly output and various debugging dumps. */
2086 int name_specified
= name
!= 0;
2088 if (dump_base_name
== 0)
2089 dump_base_name
= name
? name
: "gccdump";
2093 integration_time
= 0;
2098 branch_prob_time
= 0;
2102 local_alloc_time
= 0;
2103 global_alloc_time
= 0;
2106 shorten_branch_time
= 0;
2112 /* Open input file. */
2114 if (name
== 0 || !strcmp (name
, "-"))
2120 finput
= fopen (name
, "r");
2122 pfatal_with_name (name
);
2124 #ifdef IO_BUFFER_SIZE
2125 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
2128 /* Initialize data in various passes. */
2133 /* Some of these really don't need to be called when generating bytecode,
2134 but the options would have to be parsed first to know that. -bson */
2136 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2137 || debug_info_level
== DINFO_LEVEL_VERBOSE
2138 || flag_test_coverage
);
2140 init_decl_processing ();
2148 if (flag_caller_saves
)
2149 init_caller_save ();
2151 /* If auxiliary info generation is desired, open the output file.
2152 This goes in the same directory as the source file--unlike
2153 all the other output files. */
2154 if (flag_gen_aux_info
)
2156 aux_info_file
= fopen (aux_info_file_name
, "w");
2157 if (aux_info_file
== 0)
2158 pfatal_with_name (aux_info_file_name
);
2161 /* If rtl dump desired, open the output file. */
2163 rtl_dump_file
= open_dump_file (dump_base_name
, ".rtl");
2165 /* If jump_opt dump desired, open the output file. */
2167 jump_opt_dump_file
= open_dump_file (dump_base_name
, ".jump");
2169 /* If cse dump desired, open the output file. */
2171 cse_dump_file
= open_dump_file (dump_base_name
, ".cse");
2173 /* If loop dump desired, open the output file. */
2175 loop_dump_file
= open_dump_file (dump_base_name
, ".loop");
2177 /* If cse2 dump desired, open the output file. */
2179 cse2_dump_file
= open_dump_file (dump_base_name
, ".cse2");
2181 /* If branch_prob dump desired, open the output file. */
2182 if (branch_prob_dump
)
2183 branch_prob_dump_file
= open_dump_file (dump_base_name
, ".bp");
2185 /* If flow dump desired, open the output file. */
2187 flow_dump_file
= open_dump_file (dump_base_name
, ".flow");
2189 /* If combine dump desired, open the output file. */
2191 combine_dump_file
= open_dump_file (dump_base_name
, ".combine");
2193 /* If scheduling dump desired, open the output file. */
2195 sched_dump_file
= open_dump_file (dump_base_name
, ".sched");
2197 /* If local_reg dump desired, open the output file. */
2199 local_reg_dump_file
= open_dump_file (dump_base_name
, ".lreg");
2201 /* If global_reg dump desired, open the output file. */
2202 if (global_reg_dump
)
2203 global_reg_dump_file
= open_dump_file (dump_base_name
, ".greg");
2205 /* If 2nd scheduling dump desired, open the output file. */
2207 sched2_dump_file
= open_dump_file (dump_base_name
, ".sched2");
2209 /* If jump2_opt dump desired, open the output file. */
2211 jump2_opt_dump_file
= open_dump_file (dump_base_name
, ".jump2");
2213 /* If dbr_sched dump desired, open the output file. */
2215 dbr_sched_dump_file
= open_dump_file (dump_base_name
, ".dbr");
2219 /* If stack_reg dump desired, open the output file. */
2221 stack_reg_dump_file
= open_dump_file (dump_base_name
, ".stack");
2225 /* Open assembler code output file. */
2227 if (! name_specified
&& asm_file_name
== 0)
2228 asm_out_file
= stdout
;
2231 int len
= strlen (dump_base_name
);
2232 register char *dumpname
= (char *) xmalloc (len
+ 6);
2233 strcpy (dumpname
, dump_base_name
);
2234 strip_off_ending (dumpname
, len
);
2235 strcat (dumpname
, ".s");
2236 if (asm_file_name
== 0)
2238 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
2239 strcpy (asm_file_name
, dumpname
);
2241 if (!strcmp (asm_file_name
, "-"))
2242 asm_out_file
= stdout
;
2244 asm_out_file
= fopen (asm_file_name
, "w");
2245 if (asm_out_file
== 0)
2246 pfatal_with_name (asm_file_name
);
2249 #ifdef IO_BUFFER_SIZE
2250 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
2251 _IOFBF
, IO_BUFFER_SIZE
);
2254 input_filename
= name
;
2256 /* Put an entry on the input file stack for the main input file. */
2258 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
2259 input_file_stack
->next
= 0;
2260 input_file_stack
->name
= input_filename
;
2262 /* Perform language-specific initialization.
2263 This may set main_input_filename. */
2266 /* If the input doesn't start with a #line, use the input name
2267 as the official input file name. */
2268 if (main_input_filename
== 0)
2269 main_input_filename
= name
;
2271 if (!output_bytecode
)
2273 ASM_FILE_START (asm_out_file
);
2275 #ifdef ASM_COMMENT_START
2276 if (flag_verbose_asm
)
2278 /* Print the list of options in effect. */
2279 print_version (asm_out_file
, ASM_COMMENT_START
);
2280 print_switch_values (asm_out_file
, 0, MAX_LINE
,
2281 ASM_COMMENT_START
, " ", "\n");
2282 /* Add a blank line here so it appears in assembler output but not
2284 fprintf (asm_out_file
, "\n");
2289 /* Output something to inform GDB that this compilation was by GCC. Also
2290 serves to tell GDB file consists of bytecodes. */
2291 if (output_bytecode
)
2292 fprintf (asm_out_file
, "bc_gcc2_compiled.:\n");
2295 #ifndef ASM_IDENTIFY_GCC
2296 fprintf (asm_out_file
, "gcc2_compiled.:\n");
2298 ASM_IDENTIFY_GCC (asm_out_file
);
2302 /* Output something to identify which front-end produced this file. */
2303 #ifdef ASM_IDENTIFY_LANGUAGE
2304 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
2307 #ifndef ASM_OUTPUT_SECTION_NAME
2308 if (flag_function_sections
)
2310 warning ("-ffunction-sections not supported for this target.");
2311 flag_function_sections
= 0;
2315 if (flag_function_sections
2316 && (profile_flag
|| profile_block_flag
))
2318 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2319 flag_function_sections
= 0;
2322 if (flag_function_sections
&& write_symbols
!= NO_DEBUG
)
2323 warning ("-ffunction-sections may affect debugging on some targets.");
2325 if (output_bytecode
)
2327 if (profile_flag
|| profile_block_flag
)
2328 error ("profiling not supported in bytecode compilation");
2332 /* ??? Note: There used to be a conditional here
2333 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2334 This was to guarantee separation between gcc_compiled. and
2335 the first function, for the sake of dbx on Suns.
2336 However, having the extra zero here confused the Emacs
2337 code for unexec, and might confuse other programs too.
2338 Therefore, I took out that change.
2339 In future versions we should find another way to solve
2340 that dbx problem. -- rms, 23 May 93. */
2342 /* Don't let the first function fall at the same address
2343 as gcc_compiled., if profiling. */
2344 if (profile_flag
|| profile_block_flag
)
2345 assemble_zeros (UNITS_PER_WORD
);
2348 /* If dbx symbol table desired, initialize writing it
2349 and output the predefined types. */
2350 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2351 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2352 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
2355 #ifdef SDB_DEBUGGING_INFO
2356 if (write_symbols
== SDB_DEBUG
)
2357 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
2360 #ifdef DWARF_DEBUGGING_INFO
2361 if (write_symbols
== DWARF_DEBUG
)
2362 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
2364 #ifdef DWARF2_DEBUGGING_INFO
2365 if (write_symbols
== DWARF2_DEBUG
)
2366 TIMEVAR (symout_time
, dwarf2out_init (asm_out_file
, main_input_filename
));
2369 /* Initialize yet another pass. */
2371 if (!output_bytecode
)
2372 init_final (main_input_filename
);
2373 init_branch_prob (dump_base_name
);
2375 start_time
= get_run_time ();
2377 /* Call the parser, which parses the entire file
2378 (calling rest_of_compilation for each function). */
2380 if (yyparse () != 0)
2382 if (errorcount
== 0)
2383 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
2385 /* In case there were missing closebraces,
2386 get us back to the global binding level. */
2387 while (! global_bindings_p ())
2391 output_func_start_profiler ();
2393 /* Compilation is now finished except for writing
2394 what's left of the symbol table output. */
2396 parse_time
+= get_run_time () - start_time
;
2398 parse_time
-= integration_time
;
2399 parse_time
-= varconst_time
;
2401 globals
= getdecls ();
2403 /* Really define vars that have had only a tentative definition.
2404 Really output inline functions that must actually be callable
2405 and have not been output so far. */
2408 int len
= list_length (globals
);
2409 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
2414 /* Process the decls in reverse order--earliest first.
2415 Put them into VEC from back to front, then take out from front. */
2417 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
2418 vec
[len
- i
- 1] = decl
;
2420 for (i
= 0; i
< len
; i
++)
2424 /* We're not deferring this any longer. */
2425 DECL_DEFER_OUTPUT (decl
) = 0;
2427 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2428 && incomplete_decl_finalize_hook
!= 0)
2429 (*incomplete_decl_finalize_hook
) (decl
);
2432 /* Now emit any global variables or functions that we have been putting
2433 off. We need to loop in case one of the things emitted here
2434 references another one which comes earlier in the list. */
2438 for (i
= 0; i
< len
; i
++)
2442 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
))
2445 /* Don't write out static consts, unless we still need them.
2447 We also keep static consts if not optimizing (for debugging),
2448 unless the user specified -fno-keep-static-consts.
2449 ??? They might be better written into the debug information.
2450 This is possible when using DWARF.
2452 A language processor that wants static constants to be always
2453 written out (even if it is not used) is responsible for
2454 calling rest_of_decl_compilation itself. E.g. the C front-end
2455 calls rest_of_decl_compilation from finish_decl.
2456 One motivation for this is that is conventional in some
2457 environments to write things like:
2458 static const char rcsid[] = "... version string ...";
2459 intending to force the string to be in the executable.
2461 A language processor that would prefer to have unneeded
2462 static constants "optimized away" would just defer writing
2463 them out until here. E.g. C++ does this, because static
2464 constants are often defined in header files.
2466 ??? A tempting alternative (for both C and C++) would be
2467 to force a constant to be written if and only if it is
2468 defined in a main file, as opposed to an include file. */
2470 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2471 && (! TREE_READONLY (decl
)
2472 || TREE_PUBLIC (decl
)
2473 || (!optimize
&& flag_keep_static_consts
)
2474 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2477 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2480 if (TREE_CODE (decl
) == FUNCTION_DECL
2481 && DECL_INITIAL (decl
) != 0
2482 && DECL_SAVED_INSNS (decl
) != 0
2483 && (flag_keep_inline_functions
2484 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2487 temporary_allocation ();
2488 output_inline_function (decl
);
2489 permanent_allocation (1);
2494 /* Now that all possible functions have been output, we can dump
2495 the exception table. */
2497 if (exception_table_p ())
2498 output_exception_table ();
2500 for (i
= 0; i
< len
; i
++)
2504 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2505 && ! TREE_ASM_WRITTEN (decl
))
2506 /* Cancel the RTL for this decl so that, if debugging info
2507 output for global variables is still to come,
2508 this one will be omitted. */
2509 DECL_RTL (decl
) = NULL
;
2511 /* Warn about any function
2512 declared static but not defined.
2513 We don't warn about variables,
2514 because many programs have static variables
2515 that exist only to get some text into the object file. */
2516 if (TREE_CODE (decl
) == FUNCTION_DECL
2518 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2519 && DECL_INITIAL (decl
) == 0
2520 && DECL_EXTERNAL (decl
)
2521 && ! DECL_ARTIFICIAL (decl
)
2522 && ! TREE_PUBLIC (decl
))
2524 pedwarn_with_decl (decl
,
2525 "`%s' declared `static' but never defined");
2526 /* This symbol is effectively an "extern" declaration now. */
2527 TREE_PUBLIC (decl
) = 1;
2528 assemble_external (decl
);
2531 /* Warn about static fns or vars defined but not used,
2532 but not about inline functions or static consts
2533 since defining those in header files is normal practice. */
2535 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2536 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2537 && ! DECL_IN_SYSTEM_HEADER (decl
)
2538 && ! DECL_EXTERNAL (decl
)
2539 && ! TREE_PUBLIC (decl
)
2540 && ! TREE_USED (decl
)
2541 && (TREE_CODE (decl
) == FUNCTION_DECL
|| ! DECL_REGISTER (decl
))
2542 /* The TREE_USED bit for file-scope decls
2543 is kept in the identifier, to handle multiple
2544 external decls in different scopes. */
2545 && ! TREE_USED (DECL_NAME (decl
)))
2546 warning_with_decl (decl
, "`%s' defined but not used");
2548 #ifdef SDB_DEBUGGING_INFO
2549 /* The COFF linker can move initialized global vars to the end.
2550 And that can screw up the symbol ordering.
2551 By putting the symbols in that order to begin with,
2552 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2553 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2554 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2555 && ! DECL_EXTERNAL (decl
)
2556 && DECL_RTL (decl
) != 0)
2557 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2559 /* Output COFF information for non-global
2560 file-scope initialized variables. */
2561 if (write_symbols
== SDB_DEBUG
2562 && TREE_CODE (decl
) == VAR_DECL
2563 && DECL_INITIAL (decl
)
2564 && ! DECL_EXTERNAL (decl
)
2565 && DECL_RTL (decl
) != 0
2566 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2567 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2568 #endif /* SDB_DEBUGGING_INFO */
2569 #ifdef DWARF_DEBUGGING_INFO
2570 /* Output DWARF information for file-scope tentative data object
2571 declarations, file-scope (extern) function declarations (which
2572 had no corresponding body) and file-scope tagged type declarations
2573 and definitions which have not yet been forced out. */
2575 if (write_symbols
== DWARF_DEBUG
2576 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2577 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2579 #ifdef DWARF2_DEBUGGING_INFO
2580 /* Output DWARF2 information for file-scope tentative data object
2581 declarations, file-scope (extern) function declarations (which
2582 had no corresponding body) and file-scope tagged type declarations
2583 and definitions which have not yet been forced out. */
2585 if (write_symbols
== DWARF2_DEBUG
2586 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2587 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2592 /* Write out any pending weak symbol declarations. */
2596 /* Do dbx symbols */
2597 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2598 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2599 TIMEVAR (symout_time
,
2601 dbxout_finish (asm_out_file
, main_input_filename
);
2605 #ifdef DWARF_DEBUGGING_INFO
2606 if (write_symbols
== DWARF_DEBUG
)
2607 TIMEVAR (symout_time
,
2613 #ifdef DWARF2_DEBUGGING_INFO
2614 if (write_symbols
== DWARF2_DEBUG
)
2615 TIMEVAR (symout_time
,
2617 dwarf2out_finish ();
2621 /* Output some stuff at end of file if nec. */
2623 if (!output_bytecode
)
2625 end_final (dump_base_name
);
2626 end_branch_prob (branch_prob_dump_file
);
2629 ASM_FILE_END (asm_out_file
);
2633 /* Language-specific end of compilation actions. */
2637 if (output_bytecode
)
2638 bc_write_file (asm_out_file
);
2640 /* Close the dump files. */
2642 if (flag_gen_aux_info
)
2644 fclose (aux_info_file
);
2646 unlink (aux_info_file_name
);
2650 fclose (rtl_dump_file
);
2653 fclose (jump_opt_dump_file
);
2656 fclose (cse_dump_file
);
2659 fclose (loop_dump_file
);
2662 fclose (cse2_dump_file
);
2664 if (branch_prob_dump
)
2665 fclose (branch_prob_dump_file
);
2668 fclose (flow_dump_file
);
2672 dump_combine_total_stats (combine_dump_file
);
2673 fclose (combine_dump_file
);
2677 fclose (sched_dump_file
);
2680 fclose (local_reg_dump_file
);
2682 if (global_reg_dump
)
2683 fclose (global_reg_dump_file
);
2686 fclose (sched2_dump_file
);
2689 fclose (jump2_opt_dump_file
);
2692 fclose (dbr_sched_dump_file
);
2696 fclose (stack_reg_dump_file
);
2699 /* Close non-debugging input and output files. Take special care to note
2700 whether fclose returns an error, since the pages might still be on the
2701 buffer chain while the file is open. */
2704 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
2705 fatal_io_error (asm_file_name
);
2707 /* Print the times. */
2711 fprintf (stderr
,"\n");
2712 print_time ("parse", parse_time
);
2714 if (!output_bytecode
)
2716 print_time ("integration", integration_time
);
2717 print_time ("jump", jump_time
);
2718 print_time ("cse", cse_time
);
2719 print_time ("loop", loop_time
);
2720 print_time ("cse2", cse2_time
);
2721 print_time ("branch-prob", branch_prob_time
);
2722 print_time ("flow", flow_time
);
2723 print_time ("combine", combine_time
);
2724 print_time ("sched", sched_time
);
2725 print_time ("local-alloc", local_alloc_time
);
2726 print_time ("global-alloc", global_alloc_time
);
2727 print_time ("sched2", sched2_time
);
2728 print_time ("dbranch", dbr_sched_time
);
2729 print_time ("shorten-branch", shorten_branch_time
);
2730 print_time ("stack-reg", stack_reg_time
);
2731 print_time ("final", final_time
);
2732 print_time ("varconst", varconst_time
);
2733 print_time ("symout", symout_time
);
2734 print_time ("dump", dump_time
);
2739 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2740 and TYPE_DECL nodes.
2742 This does nothing for local (non-static) variables.
2743 Otherwise, it sets up the RTL and outputs any assembler code
2744 (label definition, storage allocation and initialization).
2746 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2747 the assembler symbol name to be used. TOP_LEVEL is nonzero
2748 if this declaration is not within a function. */
2751 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
2757 /* Declarations of variables, and of functions defined elsewhere. */
2759 /* The most obvious approach, to put an #ifndef around where
2760 this macro is used, doesn't work since it's inside a macro call. */
2761 #ifndef ASM_FINISH_DECLARE_OBJECT
2762 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2765 /* Forward declarations for nested functions are not "external",
2766 but we need to treat them as if they were. */
2767 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
2768 || TREE_CODE (decl
) == FUNCTION_DECL
)
2769 TIMEVAR (varconst_time
,
2771 make_decl_rtl (decl
, asmspec
, top_level
);
2772 /* Initialized extern variable exists to be replaced
2773 with its value, or represents something that will be
2774 output in another file. */
2775 if (! (TREE_CODE (decl
) == VAR_DECL
2776 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
2777 && DECL_INITIAL (decl
) != 0
2778 && DECL_INITIAL (decl
) != error_mark_node
))
2779 /* Don't output anything
2780 when a tentative file-scope definition is seen.
2781 But at end of compilation, do output code for them. */
2782 if (! (! at_end
&& top_level
2783 && (DECL_INITIAL (decl
) == 0
2784 || DECL_INITIAL (decl
) == error_mark_node
)))
2785 assemble_variable (decl
, top_level
, at_end
, 0);
2786 if (!output_bytecode
2787 && decl
== last_assemble_variable_decl
)
2789 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
2793 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
2795 if (decode_reg_name (asmspec
) >= 0)
2797 DECL_RTL (decl
) = 0;
2798 make_decl_rtl (decl
, asmspec
, top_level
);
2801 error ("invalid register name `%s' for register variable", asmspec
);
2803 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2804 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2805 && TREE_CODE (decl
) == TYPE_DECL
)
2806 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
2808 #ifdef SDB_DEBUGGING_INFO
2809 else if (write_symbols
== SDB_DEBUG
&& top_level
2810 && TREE_CODE (decl
) == TYPE_DECL
)
2811 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2815 /* Called after finishing a record, union or enumeral type. */
2818 rest_of_type_compilation (type
, toplev
)
2822 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2823 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2824 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2826 #ifdef SDB_DEBUGGING_INFO
2827 if (write_symbols
== SDB_DEBUG
)
2828 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2832 /* This is called from finish_function (within yyparse)
2833 after each top-level definition is parsed.
2834 It is supposed to compile that function or variable
2835 and output the assembler code for it.
2836 After we return, the tree storage is freed. */
2839 rest_of_compilation (decl
)
2843 int start_time
= get_run_time ();
2845 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2846 to be restored after we finish compiling the function
2847 (for use when compiling inline calls to this function). */
2848 tree saved_block_tree
= 0;
2849 /* Likewise, for DECL_ARGUMENTS. */
2850 tree saved_arguments
= 0;
2853 if (output_bytecode
)
2856 /* If we are reconsidering an inline function
2857 at the end of compilation, skip the stuff for making it inline. */
2859 if (DECL_SAVED_INSNS (decl
) == 0)
2864 /* If requested, consider whether to make this function inline. */
2865 if (DECL_INLINE (decl
) || flag_inline_functions
)
2866 TIMEVAR (integration_time
,
2868 lose
= function_cannot_inline_p (decl
);
2869 if (lose
|| ! optimize
)
2871 if (warn_inline
&& DECL_INLINE (decl
))
2872 warning_with_decl (decl
, lose
);
2873 DECL_ABSTRACT_ORIGIN (decl
) = 0;
2874 /* Don't really compile an extern inline function.
2875 If we can't make it inline, pretend
2876 it was only declared. */
2877 if (DECL_EXTERNAL (decl
))
2879 DECL_INITIAL (decl
) = 0;
2880 goto exit_rest_of_compilation
;
2884 /* ??? Note that this has the effect of making it look
2885 like "inline" was specified for a function if we choose
2886 to inline it. This isn't quite right, but it's
2887 probably not worth the trouble to fix. */
2888 inlineable
= DECL_INLINE (decl
) = 1;
2891 insns
= get_insns ();
2893 /* Dump the rtl code if we are dumping rtl. */
2898 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
2899 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2900 if (DECL_SAVED_INSNS (decl
))
2901 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
2902 print_rtl (rtl_dump_file
, insns
);
2903 fflush (rtl_dump_file
);
2906 /* If function is inline, and we don't yet know whether to
2907 compile it by itself, defer decision till end of compilation.
2908 finish_compilation will call rest_of_compilation again
2909 for those functions that need to be output. Also defer those
2910 functions that we are supposed to defer. We cannot defer
2911 functions containing nested functions since the nested function
2912 data is in our non-saved obstack. */
2914 if (! current_function_contains_functions
2915 && (DECL_DEFER_OUTPUT (decl
)
2916 || (DECL_INLINE (decl
)
2917 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
2918 && ! flag_keep_inline_functions
)
2919 || DECL_EXTERNAL (decl
)))))
2921 DECL_DEFER_OUTPUT (decl
) = 1;
2923 /* If -Wreturn-type, we have to do a bit of compilation. */
2924 if (! warn_return_type
)
2926 #ifdef DWARF_DEBUGGING_INFO
2927 /* Generate the DWARF info for the "abstract" instance
2928 of a function which we may later generate inlined and/or
2929 out-of-line instances of. */
2930 if (write_symbols
== DWARF_DEBUG
)
2932 set_decl_abstract_flags (decl
, 1);
2933 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2934 set_decl_abstract_flags (decl
, 0);
2937 #ifdef DWARF2_DEBUGGING_INFO
2938 /* Generate the DWARF2 info for the "abstract" instance
2939 of a function which we may later generate inlined and/or
2940 out-of-line instances of. */
2941 if (write_symbols
== DWARF2_DEBUG
)
2943 set_decl_abstract_flags (decl
, 1);
2944 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2945 set_decl_abstract_flags (decl
, 0);
2948 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
2949 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
2950 goto exit_rest_of_compilation
;
2954 /* If we have to compile the function now, save its rtl and subdecls
2955 so that its compilation will not affect what others get. */
2956 if (inlineable
|| DECL_DEFER_OUTPUT (decl
))
2958 #ifdef DWARF_DEBUGGING_INFO
2959 /* Generate the DWARF info for the "abstract" instance of
2960 a function which we will generate an out-of-line instance
2961 of almost immediately (and which we may also later generate
2962 various inlined instances of). */
2963 if (write_symbols
== DWARF_DEBUG
)
2965 set_decl_abstract_flags (decl
, 1);
2966 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2967 set_decl_abstract_flags (decl
, 0);
2970 #ifdef DWARF2_DEBUGGING_INFO
2971 /* Generate the DWARF2 info for the "abstract" instance of
2972 a function which we will generate an out-of-line instance
2973 of almost immediately (and which we may also later generate
2974 various inlined instances of). */
2975 if (write_symbols
== DWARF2_DEBUG
)
2977 set_decl_abstract_flags (decl
, 1);
2978 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2979 set_decl_abstract_flags (decl
, 0);
2982 saved_block_tree
= DECL_INITIAL (decl
);
2983 saved_arguments
= DECL_ARGUMENTS (decl
);
2984 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
2985 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
2988 /* If specified extern inline but we aren't inlining it, we are
2990 if (DECL_INLINE (decl
) && DECL_EXTERNAL (decl
))
2991 goto exit_rest_of_compilation
;
2994 if (! DECL_DEFER_OUTPUT (decl
))
2995 TREE_ASM_WRITTEN (decl
) = 1;
2997 /* Now that integrate will no longer see our rtl, we need not distinguish
2998 between the return value of this function and the return value of called
3000 rtx_equal_function_value_matters
= 0;
3002 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3003 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
3005 goto exit_rest_of_compilation
;
3008 /* Add an unwinder for exception handling, if needed.
3009 This must be done before we finalize PIC code. */
3013 /* If we are doing position-independent code generation, now
3014 is the time to output special prologues and epilogues.
3015 We do not want to do this earlier, because it just clutters
3016 up inline functions with meaningless insns. */
3021 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3022 Note that that may have been done above, in save_for_inline_copying.
3023 The call to resume_temporary_allocation near the end of this function
3024 goes back to the usual state of affairs. This must be done after
3025 we've built up any unwinders for exception handling, and done
3026 the FINALIZE_PIC work, if necessary. */
3028 rtl_in_current_obstack ();
3030 insns
= get_insns ();
3032 /* Copy any shared structure that should not be shared. */
3034 unshare_all_rtl (insns
);
3036 /* Instantiate all virtual registers. */
3038 instantiate_virtual_regs (current_function_decl
, get_insns ());
3040 /* See if we have allocated stack slots that are not directly addressable.
3041 If so, scan all the insns and create explicit address computation
3042 for all references to such slots. */
3043 /* fixup_stack_slots (); */
3045 /* Find all the EH handlers. */
3046 find_exception_handler_labels ();
3048 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3049 are initialized and to compute whether control can drop off the end
3051 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3052 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3054 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3055 if (rtl_dump_and_exit
|| flag_syntax_only
|| DECL_DEFER_OUTPUT (decl
))
3056 goto exit_rest_of_compilation
;
3058 /* Dump rtl code after jump, if we are doing that. */
3063 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
3064 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3065 print_rtl (jump_opt_dump_file
, insns
);
3066 fflush (jump_opt_dump_file
);
3069 /* Perform common subexpression elimination.
3070 Nonzero value from `cse_main' means that jumps were simplified
3071 and some code may now be unreachable, so do
3072 jump optimization again. */
3077 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
3078 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3083 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
3085 if (flag_thread_jumps
)
3086 /* Hacks by tiemann & kenner. */
3087 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
3089 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
3091 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
3093 if (tem
|| optimize
> 1)
3094 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3097 /* Dump rtl code after cse, if we are doing that. */
3102 print_rtl (cse_dump_file
, insns
);
3103 fflush (cse_dump_file
);
3109 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
3110 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3113 /* Move constant computations out of loops. */
3119 loop_optimize (insns
, loop_dump_file
);
3123 /* Dump rtl code after loop opt, if we are doing that. */
3128 print_rtl (loop_dump_file
, insns
);
3129 fflush (loop_dump_file
);
3135 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
3136 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3139 if (optimize
> 0 && flag_rerun_cse_after_loop
)
3141 /* Running another jump optimization pass before the second
3142 cse pass sometimes simplifies the RTL enough to allow
3143 the second CSE pass to do a better job. Jump_optimize can change
3144 max_reg_num so we must rerun reg_scan afterwards.
3145 ??? Rework to not call reg_scan so often. */
3146 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3147 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3149 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
3150 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
3151 1, cse2_dump_file
));
3153 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3156 if (optimize
> 0 && flag_thread_jumps
)
3158 /* This pass of jump threading straightens out code
3159 that was kinked by loop optimization. */
3160 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3161 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
3163 /* Dump rtl code after cse, if we are doing that. */
3168 print_rtl (cse2_dump_file
, insns
);
3169 fflush (cse2_dump_file
);
3172 if (branch_prob_dump
)
3175 fprintf (branch_prob_dump_file
, "\n;; Function %s\n\n",
3176 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3179 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
3180 TIMEVAR (branch_prob_time
,
3182 branch_prob (insns
, branch_prob_dump_file
);
3185 if (branch_prob_dump
)
3188 print_rtl (branch_prob_dump_file
, insns
);
3189 fflush (branch_prob_dump_file
);
3191 /* We are no longer anticipating cse in this function, at least. */
3193 cse_not_expected
= 1;
3195 /* Now we choose between stupid (pcc-like) register allocation
3196 (if we got the -noreg switch and not -opt)
3197 and smart register allocation. */
3199 if (optimize
> 0) /* Stupid allocation probably won't work */
3200 obey_regdecls
= 0; /* if optimizations being done. */
3204 /* Print function header into flow dump now
3205 because doing the flow analysis makes some of the dump. */
3210 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
3211 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3218 regclass (insns
, max_reg_num ());
3219 stupid_life_analysis (insns
, max_reg_num (),
3225 /* Do control and data flow analysis,
3226 and write some of the results to dump file. */
3228 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
3230 if (warn_uninitialized
)
3232 uninitialized_vars_warning (DECL_INITIAL (decl
));
3233 setjmp_args_warning ();
3237 /* Dump rtl after flow analysis. */
3242 print_rtl (flow_dump_file
, insns
);
3243 fflush (flow_dump_file
);
3246 /* If -opt, try combining insns through substitution. */
3249 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
3251 /* Dump rtl code after insn combination. */
3256 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
3257 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3258 dump_combine_stats (combine_dump_file
);
3259 print_rtl (combine_dump_file
, insns
);
3260 fflush (combine_dump_file
);
3263 /* Print function header into sched dump now
3264 because doing the sched analysis makes some of the dump. */
3269 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
3270 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3273 if (optimize
> 0 && flag_schedule_insns
)
3275 /* Do control and data sched analysis,
3276 and write some of the results to dump file. */
3278 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
3281 /* Dump rtl after instruction scheduling. */
3286 print_rtl (sched_dump_file
, insns
);
3287 fflush (sched_dump_file
);
3290 /* Unless we did stupid register allocation,
3291 allocate pseudo-regs that are used only within 1 basic block. */
3294 TIMEVAR (local_alloc_time
,
3296 regclass (insns
, max_reg_num ());
3300 /* Dump rtl code after allocating regs within basic blocks. */
3305 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
3306 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3307 dump_flow_info (local_reg_dump_file
);
3308 dump_local_alloc (local_reg_dump_file
);
3309 print_rtl (local_reg_dump_file
, insns
);
3310 fflush (local_reg_dump_file
);
3313 if (global_reg_dump
)
3315 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
3316 IDENTIFIER_POINTER (DECL_NAME (decl
))));
3318 /* Save the last label number used so far, so reorg can tell
3319 when it's safe to kill spill regs. */
3320 max_label_num_after_reload
= max_label_num ();
3322 /* Unless we did stupid register allocation,
3323 allocate remaining pseudo-regs, then do the reload pass
3324 fixing up any insns that are invalid. */
3326 TIMEVAR (global_alloc_time
,
3329 failure
= global_alloc (global_reg_dump_file
);
3331 failure
= reload (insns
, 0, global_reg_dump_file
);
3334 if (global_reg_dump
)
3337 dump_global_regs (global_reg_dump_file
);
3338 print_rtl (global_reg_dump_file
, insns
);
3339 fflush (global_reg_dump_file
);
3343 goto exit_rest_of_compilation
;
3345 reload_completed
= 1;
3347 /* On some machines, the prologue and epilogue code, or parts thereof,
3348 can be represented as RTL. Doing so lets us schedule insns between
3349 it and the rest of the code and also allows delayed branch
3350 scheduling to operate in the epilogue. */
3352 thread_prologue_and_epilogue_insns (insns
);
3354 if (optimize
> 0 && flag_schedule_insns_after_reload
)
3359 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
3360 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3363 /* Do control and data sched analysis again,
3364 and write some more of the results to dump file. */
3366 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
3368 /* Dump rtl after post-reorder instruction scheduling. */
3373 print_rtl (sched2_dump_file
, insns
);
3374 fflush (sched2_dump_file
);
3378 #ifdef LEAF_REGISTERS
3380 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
3384 /* One more attempt to remove jumps to .+1
3385 left by dead-store-elimination.
3386 Also do cross-jumping this time
3387 and delete no-op move insns. */
3391 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
3394 /* Dump rtl code after jump, if we are doing that. */
3399 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
3400 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3401 print_rtl (jump2_opt_dump_file
, insns
);
3402 fflush (jump2_opt_dump_file
);
3405 /* If a machine dependent reorganization is needed, call it. */
3406 #ifdef MACHINE_DEPENDENT_REORG
3407 MACHINE_DEPENDENT_REORG (insns
);
3410 /* If a scheduling pass for delayed branches is to be done,
3411 call the scheduling code. */
3414 if (optimize
> 0 && flag_delayed_branch
)
3416 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
3421 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
3422 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3423 print_rtl (dbr_sched_dump_file
, insns
);
3424 fflush (dbr_sched_dump_file
);
3430 /* Shorten branches. */
3431 TIMEVAR (shorten_branch_time
,
3433 shorten_branches (get_insns ());
3437 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
3442 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
3443 IDENTIFIER_POINTER (DECL_NAME (decl
)));
3444 print_rtl (stack_reg_dump_file
, insns
);
3445 fflush (stack_reg_dump_file
);
3450 /* Now turn the rtl into assembler code. */
3452 TIMEVAR (final_time
,
3457 /* Get the function's name, as described by its RTL.
3458 This may be different from the DECL_NAME name used
3459 in the source file. */
3461 x
= DECL_RTL (decl
);
3462 if (GET_CODE (x
) != MEM
)
3465 if (GET_CODE (x
) != SYMBOL_REF
)
3467 fnname
= XSTR (x
, 0);
3469 assemble_start_function (decl
, fnname
);
3470 final_start_function (insns
, asm_out_file
, optimize
);
3471 final (insns
, asm_out_file
, optimize
, 0);
3472 final_end_function (insns
, asm_out_file
, optimize
);
3473 assemble_end_function (decl
, fnname
);
3474 fflush (asm_out_file
);
3476 /* Release all memory held by regsets now */
3477 regset_release_memory ();
3480 /* Write DBX symbols if requested */
3482 /* Note that for those inline functions where we don't initially
3483 know for certain that we will be generating an out-of-line copy,
3484 the first invocation of this routine (rest_of_compilation) will
3485 skip over this code by doing a `goto exit_rest_of_compilation;'.
3486 Later on, finish_compilation will call rest_of_compilation again
3487 for those inline functions that need to have out-of-line copies
3488 generated. During that call, we *will* be routed past here. */
3490 #ifdef DBX_DEBUGGING_INFO
3491 if (write_symbols
== DBX_DEBUG
)
3492 TIMEVAR (symout_time
, dbxout_function (decl
));
3495 #ifdef DWARF_DEBUGGING_INFO
3496 if (write_symbols
== DWARF_DEBUG
)
3497 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3500 #ifdef DWARF2_DEBUGGING_INFO
3501 if (write_symbols
== DWARF2_DEBUG
)
3502 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3505 exit_rest_of_compilation
:
3507 /* In case the function was not output,
3508 don't leave any temporary anonymous types
3509 queued up for sdb output. */
3510 #ifdef SDB_DEBUGGING_INFO
3511 if (write_symbols
== SDB_DEBUG
)
3512 sdbout_types (NULL_TREE
);
3515 /* Put back the tree of subblocks and list of arguments
3516 from before we copied them.
3517 Code generation and the output of debugging info may have modified
3518 the copy, but the original is unchanged. */
3520 if (saved_block_tree
!= 0)
3522 DECL_INITIAL (decl
) = saved_block_tree
;
3523 DECL_ARGUMENTS (decl
) = saved_arguments
;
3524 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
3527 reload_completed
= 0;
3529 /* Clear out the insn_length contents now that they are no longer valid. */
3530 init_insn_lengths ();
3532 /* Clear out the real_constant_chain before some of the rtx's
3533 it runs through become garbage. */
3535 clear_const_double_mem ();
3537 /* Cancel the effect of rtl_in_current_obstack. */
3539 resume_temporary_allocation ();
3541 /* Show no temporary slots allocated. */
3545 /* The parsing time is all the time spent in yyparse
3546 *except* what is spent in this function. */
3548 parse_time
-= get_run_time () - start_time
;
3551 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3552 Exit code is 35 if can't open files, 34 if fatal error,
3553 33 if had nonfatal errors, else success. */
3556 main (argc
, argv
, envp
)
3563 int flag_print_mem
= 0;
3564 int version_flag
= 0;
3567 /* save in case md file wants to emit args as a comment. */
3571 p
= argv
[0] + strlen (argv
[0]);
3572 while (p
!= argv
[0] && p
[-1] != '/'
3573 #ifdef DIR_SEPARATOR
3574 && p
[-1] != DIR_SEPARATOR
3581 /* Get rid of any avoidable limit on stack size. */
3585 /* Set the stack limit huge so that alloca does not fail. */
3586 getrlimit (RLIMIT_STACK
, &rlim
);
3587 rlim
.rlim_cur
= rlim
.rlim_max
;
3588 setrlimit (RLIMIT_STACK
, &rlim
);
3590 #endif /* RLIMIT_STACK */
3592 signal (SIGFPE
, float_signal
);
3595 signal (SIGPIPE
, pipe_closed
);
3598 decl_printable_name
= decl_name
;
3599 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
3601 /* Initialize whether `char' is signed. */
3602 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
3603 #ifdef DEFAULT_SHORT_ENUMS
3604 /* Initialize how much space enums occupy, by default. */
3605 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
3608 /* Scan to see what optimization level has been specified. That will
3609 determine the default value of many flags. */
3610 for (i
= 1; i
< argc
; i
++)
3612 if (!strcmp (argv
[i
], "-O"))
3616 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
3618 /* Handle -O2, -O3, -O69, ... */
3619 char *p
= &argv
[i
][2];
3623 if (! (c
>= '0' && c
<= '9'))
3626 optimize
= atoi (&argv
[i
][2]);
3630 obey_regdecls
= (optimize
== 0);
3635 flag_thread_jumps
= 1;
3637 flag_delayed_branch
= 1;
3639 #ifdef CAN_DEBUG_WITHOUT_FP
3640 flag_omit_frame_pointer
= 1;
3646 flag_cse_follow_jumps
= 1;
3647 flag_cse_skip_blocks
= 1;
3648 flag_expensive_optimizations
= 1;
3649 flag_strength_reduce
= 1;
3650 flag_rerun_cse_after_loop
= 1;
3651 flag_caller_saves
= 1;
3653 #ifdef INSN_SCHEDULING
3654 flag_schedule_insns
= 1;
3655 flag_schedule_insns_after_reload
= 1;
3661 flag_inline_functions
= 1;
3664 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3667 set_target_switch ("");
3669 #ifdef OPTIMIZATION_OPTIONS
3670 /* Allow default optimizations to be specified on a per-machine basis. */
3671 OPTIMIZATION_OPTIONS (optimize
);
3674 /* Initialize register usage now so switches may override. */
3677 for (i
= 1; i
< argc
; i
++)
3680 /* If this is a language-specific option,
3681 decode it in a language-specific way. */
3682 for (j
= 0; lang_options
[j
] != 0; j
++)
3683 if (!strncmp (argv
[i
], lang_options
[j
],
3684 strlen (lang_options
[j
])))
3686 if (lang_options
[j
] != 0)
3687 /* If the option is valid for *some* language,
3688 treat it as valid even if this language doesn't understand it. */
3689 lang_decode_option (argv
[i
]);
3690 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
3692 register char *str
= argv
[i
] + 1;
3697 set_target_switch (&str
[1]);
3698 else if (!strcmp (str
, "dumpbase"))
3700 dump_base_name
= argv
[++i
];
3702 else if (str
[0] == 'd')
3704 register char *p
= &str
[1];
3709 branch_prob_dump
= 1;
3713 global_reg_dump
= 1;
3719 cse_dump
= 1, cse2_dump
= 1;
3725 branch_prob_dump
= 1;
3740 global_reg_dump
= 1;
3758 flag_print_asm_name
= 1;
3779 rtl_dump_and_exit
= 1;
3786 else if (str
[0] == 'f')
3788 register char *p
= &str
[1];
3791 /* Some kind of -f option.
3792 P's value is the option sans `-f'.
3793 Search for it in the table of options. */
3796 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
3799 if (!strcmp (p
, f_options
[j
].string
))
3801 *f_options
[j
].variable
= f_options
[j
].on_value
;
3802 /* A goto here would be cleaner,
3803 but breaks the vax pcc. */
3806 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3807 && ! strcmp (p
+3, f_options
[j
].string
))
3809 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
3816 else if (!strncmp (p
, "fixed-", 6))
3817 fix_register (&p
[6], 1, 1);
3818 else if (!strncmp (p
, "call-used-", 10))
3819 fix_register (&p
[10], 0, 1);
3820 else if (!strncmp (p
, "call-saved-", 11))
3821 fix_register (&p
[11], 0, 0);
3823 error ("Invalid option `%s'", argv
[i
]);
3825 else if (str
[0] == 'O')
3827 register char *p
= str
+1;
3828 while (*p
&& *p
>= '0' && *p
<= '9')
3833 error ("Invalid option `%s'", argv
[i
]);
3835 else if (!strcmp (str
, "pedantic"))
3837 else if (!strcmp (str
, "pedantic-errors"))
3838 flag_pedantic_errors
= pedantic
= 1;
3839 else if (!strcmp (str
, "quiet"))
3841 else if (!strcmp (str
, "version"))
3843 else if (!strcmp (str
, "w"))
3844 inhibit_warnings
= 1;
3845 else if (!strcmp (str
, "W"))
3848 /* We save the value of warn_uninitialized, since if they put
3849 -Wuninitialized on the command line, we need to generate a
3850 warning about not using it without also specifying -O. */
3851 if (warn_uninitialized
!= 1)
3852 warn_uninitialized
= 2;
3854 else if (str
[0] == 'W')
3856 register char *p
= &str
[1];
3859 /* Some kind of -W option.
3860 P's value is the option sans `-W'.
3861 Search for it in the table of options. */
3864 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
3867 if (!strcmp (p
, W_options
[j
].string
))
3869 *W_options
[j
].variable
= W_options
[j
].on_value
;
3870 /* A goto here would be cleaner,
3871 but breaks the vax pcc. */
3874 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3875 && ! strcmp (p
+3, W_options
[j
].string
))
3877 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
3884 else if (!strncmp (p
, "id-clash-", 9))
3890 if (*endp
>= '0' && *endp
<= '9')
3894 error ("Invalid option `%s'", argv
[i
]);
3899 id_clash_len
= atoi (str
+ 10);
3902 else if (!strncmp (p
, "larger-than-", 12))
3904 char *endp
= p
+ 12;
3908 if (*endp
>= '0' && *endp
<= '9')
3912 error ("Invalid option `%s'", argv
[i
]);
3913 goto larger_than_lose
;
3916 warn_larger_than
= 1;
3917 larger_than_size
= atoi (str
+ 13);
3921 error ("Invalid option `%s'", argv
[i
]);
3923 else if (!strcmp (str
, "p"))
3927 else if (!strcmp (str
, "a"))
3929 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3930 warning ("`-a' option (basic block profile) not supported");
3932 profile_block_flag
= (profile_block_flag
< 2) ? 1 : 3;
3935 else if (!strcmp (str
, "ax"))
3937 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3938 warning ("`-ax' option (jump profiling) not supported");
3940 profile_block_flag
= (!profile_block_flag
3941 || profile_block_flag
== 2) ? 2 : 3;
3944 else if (str
[0] == 'g')
3948 /* A lot of code assumes write_symbols == NO_DEBUG if the
3949 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
3950 of what debugging type has been selected). This records the
3951 selected type. It is an error to specify more than one
3953 static enum debug_info_type selected_debug_type
= NO_DEBUG
;
3954 /* Non-zero if debugging format has been explicitly set.
3955 -g and -ggdb don't explicitly set the debugging format so
3956 -gdwarf -g3 is equivalent to -gdwarf3. */
3957 static int type_explicitly_set_p
= 0;
3958 /* Table of supported debugging formats. */
3961 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
3962 constant expression, we use NO_DEBUG in its place. */
3963 enum debug_info_type debug_type
;
3964 int use_extensions_p
;
3965 } *da
, debug_args
[] = {
3966 { "g", NO_DEBUG
, DEFAULT_GDB_EXTENSIONS
},
3967 { "ggdb", NO_DEBUG
, 1 },
3968 #ifdef DBX_DEBUGGING_INFO
3969 { "gstabs", DBX_DEBUG
, 0 },
3970 { "gstabs+", DBX_DEBUG
, 1 },
3972 #ifdef DWARF_DEBUGGING_INFO
3973 { "gdwarf", DWARF_DEBUG
, 0 },
3974 { "gdwarf+", DWARF_DEBUG
, 1 },
3976 #ifdef DWARF2_DEBUGGING_INFO
3977 { "gdwarf-2", DWARF2_DEBUG
, 0 },
3979 #ifdef XCOFF_DEBUGGING_INFO
3980 { "gxcoff", XCOFF_DEBUG
, 0 },
3981 { "gxcoff+", XCOFF_DEBUG
, 1 },
3983 #ifdef SDB_DEBUGGING_INFO
3984 { "gcoff", SDB_DEBUG
, 0 },
3988 /* Indexed by enum debug_info_type. */
3989 static char *debug_type_names
[] = {
3990 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
3993 /* Look up STR in the table. */
3994 for (da
= debug_args
; da
->arg
; da
++)
3996 if (! strncmp (str
, da
->arg
, strlen (da
->arg
)))
3998 enum debug_info_type type
= da
->debug_type
;
4001 p
= str
+ strlen (da
->arg
);
4002 if (*p
&& (*p
< '0' || *p
> '9'))
4005 while (*q
&& (*q
>= '0' && *q
<= '9'))
4010 level
= 2; /* default debugging info level */
4011 if (*q
|| level
> 3)
4013 warning ("invalid debug level specification in option: `-%s'",
4015 /* ??? This error message is incorrect in the case of
4017 warning ("no debugging information will be generated");
4021 if (type
== NO_DEBUG
)
4023 type
= PREFERRED_DEBUGGING_TYPE
;
4024 if (len
> 1 && strncmp (str
, "ggdb", len
) == 0)
4026 #ifdef DWARF2_DEBUGGING_INFO
4027 type
= DWARF2_DEBUG
;
4028 #elif defined DBX_DEBUGGING_INFO
4034 if (type
== NO_DEBUG
)
4035 warning ("`-%s' not supported by this configuration of GCC",
4038 /* Does it conflict with an already selected type? */
4039 if (type_explicitly_set_p
4040 /* -g/-ggdb don't conflict with anything */
4041 && da
->debug_type
!= NO_DEBUG
4042 && type
!= selected_debug_type
)
4043 warning ("`-%s' ignored, conflicts with `-g%s'",
4044 str
, debug_type_names
[(int) selected_debug_type
]);
4047 /* If the format has already been set, -g/-ggdb
4048 only change the debug level. */
4049 if (type_explicitly_set_p
4050 && da
->debug_type
== NO_DEBUG
)
4051 ; /* don't change debugging type */
4054 selected_debug_type
= type
;
4055 type_explicitly_set_p
= da
->debug_type
!= NO_DEBUG
;
4057 write_symbols
= (level
== 0
4059 : selected_debug_type
);
4060 use_gnu_debug_info_extensions
= da
->use_extensions_p
;
4061 debug_info_level
= (enum debug_info_level
) level
;
4067 warning ("`-%s' not supported by this configuration of GCC",
4070 else if (!strcmp (str
, "o"))
4072 asm_file_name
= argv
[++i
];
4074 else if (str
[0] == 'G')
4076 g_switch_set
= TRUE
;
4077 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
4079 else if (!strncmp (str
, "aux-info", 8))
4081 flag_gen_aux_info
= 1;
4082 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
4085 error ("Invalid option `%s'", argv
[i
]);
4087 else if (argv
[i
][0] == '+')
4088 error ("Invalid option `%s'", argv
[i
]);
4093 /* Initialize for bytecode output. A good idea to do this as soon as
4094 possible after the "-f" options have been parsed. */
4095 if (output_bytecode
)
4097 #ifndef TARGET_SUPPORTS_BYTECODE
4098 /* Just die with a fatal error if not supported */
4099 fatal ("-fbytecode not supported for this target");
4107 /* Inlining does not work if not optimizing,
4108 so force it not to be done. */
4112 /* The c_decode_option and lang_decode_option functions set
4113 this to `2' if -Wall is used, so we can avoid giving out
4114 lots of errors for people who don't realize what -Wall does. */
4115 if (warn_uninitialized
== 1)
4116 warning ("-Wuninitialized is not supported without -O");
4119 #ifdef OVERRIDE_OPTIONS
4120 /* Some machines may reject certain combinations of options. */
4124 if (profile_block_flag
== 3)
4126 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
4127 profile_block_flag
= 2;
4130 /* Unrolling all loops implies that standard loop unrolling must also
4132 if (flag_unroll_all_loops
)
4133 flag_unroll_loops
= 1;
4134 /* Loop unrolling requires that strength_reduction be on also. Silently
4135 turn on strength reduction here if it isn't already on. Also, the loop
4136 unrolling code assumes that cse will be run after loop, so that must
4137 be turned on also. */
4138 if (flag_unroll_loops
)
4140 flag_strength_reduce
= 1;
4141 flag_rerun_cse_after_loop
= 1;
4144 /* Warn about options that are not supported on this machine. */
4145 #ifndef INSN_SCHEDULING
4146 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
4147 warning ("instruction scheduling not supported on this target machine");
4150 if (flag_delayed_branch
)
4151 warning ("this target machine does not have delayed branches");
4154 /* If we are in verbose mode, write out the version and maybe all the
4155 option flags in use. */
4158 print_version (stderr
, "");
4160 print_switch_values (stderr
, 0, MAX_LINE
, "", " ", "\n");
4163 compile_file (filename
);
4165 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN32__))
4168 char *lim
= (char *) sbrk (0);
4170 fprintf (stderr
, "Data size %d.\n",
4171 lim
- (char *) &environ
);
4175 system ("ps -l 1>&2");
4178 #endif /* not USG */
4180 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN32) */
4183 exit (FATAL_EXIT_CODE
);
4185 exit (FATAL_EXIT_CODE
);
4186 exit (SUCCESS_EXIT_CODE
);
4190 /* Decode -m switches. */
4192 /* Here is a table, controlled by the tm.h file, listing each -m switch
4193 and which bits in `target_switches' it should set or clear.
4194 If VALUE is positive, it is bits to set.
4195 If VALUE is negative, -VALUE is bits to clear.
4196 (The sign bit is not used so there is no confusion.) */
4198 struct {char *name
; int value
;} target_switches
[]
4201 /* This table is similar, but allows the switch to have a value. */
4203 #ifdef TARGET_OPTIONS
4204 struct {char *prefix
; char ** variable
;} target_options
[]
4208 /* Decode the switch -mNAME. */
4211 set_target_switch (name
)
4217 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4218 if (!strcmp (target_switches
[j
].name
, name
))
4220 if (target_switches
[j
].value
< 0)
4221 target_flags
&= ~-target_switches
[j
].value
;
4223 target_flags
|= target_switches
[j
].value
;
4227 #ifdef TARGET_OPTIONS
4229 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4231 int len
= strlen (target_options
[j
].prefix
);
4232 if (!strncmp (target_options
[j
].prefix
, name
, len
))
4234 *target_options
[j
].variable
= name
+ len
;
4241 error ("Invalid option `%s'", name
);
4244 /* Print version information to FILE.
4245 Each line begins with INDENT (for the case where FILE is the
4246 assembler output file). */
4249 print_version (file
, indent
)
4253 fprintf (file
, "%s%s%s version %s", indent
, *indent
!= 0 ? " " : "",
4254 language_string
, version_string
);
4255 fprintf (file
, " (%s)", TARGET_NAME
);
4258 #define __VERSION__ "[unknown]"
4260 fprintf (file
, " compiled by GNU C version %s.\n", __VERSION__
);
4262 fprintf (file
, " compiled by CC.\n");
4266 /* Print an option value and return the adjusted position in the line.
4267 ??? We don't handle error returns from fprintf (disk full); presumably
4268 other code will catch a disk full though. */
4271 print_single_switch (file
, pos
, max
, indent
, sep
, term
, type
, name
)
4274 char *indent
, *sep
, *term
, *type
, *name
;
4276 /* The ultrix fprintf returns 0 on success, so compute the result we want
4277 here since we need it for the following test. */
4278 int len
= strlen (sep
) + strlen (type
) + strlen (name
);
4283 fprintf (file
, "%s", term
);
4288 fprintf (file
, "%s", indent
);
4289 pos
= strlen (indent
);
4291 fprintf (file
, "%s%s%s", sep
, type
, name
);
4296 /* Print active target switches to FILE.
4297 POS is the current cursor position and MAX is the size of a "line".
4298 Each line begins with INDENT and ends with TERM.
4299 Each switch is separated from the next by SEP. */
4302 print_switch_values (file
, pos
, max
, indent
, sep
, term
)
4305 char *indent
, *sep
, *term
;
4310 /* Print the options as passed. */
4312 pos
= print_single_switch (file
, pos
, max
, indent
, *indent
? " " : "", term
,
4313 "options passed: ", "");
4315 for (p
= &save_argv
[1]; *p
!= NULL
; p
++)
4319 if (strcmp (*p
, "-o") == 0)
4325 if (strcmp (*p
, "-quiet") == 0)
4327 if (strcmp (*p
, "-version") == 0)
4332 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
, *p
, "");
4335 fprintf (file
, "%s", term
);
4337 /* Print the -f and -m options that have been enabled.
4338 We don't handle language specific options but printing argv
4341 pos
= print_single_switch (file
, 0, max
, indent
, *indent
? " " : "", term
,
4342 "options enabled: ", "");
4344 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
4345 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
4346 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4347 "-f", f_options
[j
].string
);
4349 /* Print target specific options. */
4351 flags
= target_flags
;
4352 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4353 if (target_switches
[j
].name
[0] != '\0'
4354 && target_switches
[j
].value
> 0
4355 && ((target_switches
[j
].value
& target_flags
)
4356 == target_switches
[j
].value
))
4358 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4359 "-m", target_switches
[j
].name
);
4360 flags
&= ~ target_switches
[j
].value
;
4363 #ifdef TARGET_OPTIONS
4364 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4365 if (*target_options
[j
].variable
!= NULL
)
4368 sprintf (prefix
, "-m%s", target_options
[j
].prefix
);
4369 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4370 prefix
, *target_options
[j
].variable
);
4374 fprintf (file
, "%s", term
);
4377 /* Record the beginning of a new source file, named FILENAME. */
4380 debug_start_source_file (filename
)
4381 register char *filename
;
4383 #ifdef DBX_DEBUGGING_INFO
4384 if (write_symbols
== DBX_DEBUG
)
4385 dbxout_start_new_source_file (filename
);
4387 #ifdef DWARF_DEBUGGING_INFO
4388 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4389 && write_symbols
== DWARF_DEBUG
)
4390 dwarfout_start_new_source_file (filename
);
4391 #endif /* DWARF_DEBUGGING_INFO */
4392 #ifdef DWARF2_DEBUGGING_INFO
4393 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4394 && write_symbols
== DWARF2_DEBUG
)
4395 dwarf2out_start_source_file (filename
);
4396 #endif /* DWARF2_DEBUGGING_INFO */
4397 #ifdef SDB_DEBUGGING_INFO
4398 if (write_symbols
== SDB_DEBUG
)
4399 sdbout_start_new_source_file (filename
);
4403 /* Record the resumption of a source file. LINENO is the line number in
4404 the source file we are returning to. */
4407 debug_end_source_file (lineno
)
4408 register unsigned lineno
;
4410 #ifdef DBX_DEBUGGING_INFO
4411 if (write_symbols
== DBX_DEBUG
)
4412 dbxout_resume_previous_source_file ();
4414 #ifdef DWARF_DEBUGGING_INFO
4415 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4416 && write_symbols
== DWARF_DEBUG
)
4417 dwarfout_resume_previous_source_file (lineno
);
4418 #endif /* DWARF_DEBUGGING_INFO */
4419 #ifdef DWARF2_DEBUGGING_INFO
4420 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4421 && write_symbols
== DWARF2_DEBUG
)
4422 dwarf2out_end_source_file ();
4423 #endif /* DWARF2_DEBUGGING_INFO */
4424 #ifdef SDB_DEBUGGING_INFO
4425 if (write_symbols
== SDB_DEBUG
)
4426 sdbout_resume_previous_source_file ();
4430 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4431 the tail part of the directive line, i.e. the part which is past the
4432 initial whitespace, #, whitespace, directive-name, whitespace part. */
4435 debug_define (lineno
, buffer
)
4436 register unsigned lineno
;
4437 register char *buffer
;
4439 #ifdef DWARF_DEBUGGING_INFO
4440 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4441 && write_symbols
== DWARF_DEBUG
)
4442 dwarfout_define (lineno
, buffer
);
4443 #endif /* DWARF_DEBUGGING_INFO */
4444 #ifdef DWARF2_DEBUGGING_INFO
4445 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4446 && write_symbols
== DWARF2_DEBUG
)
4447 dwarf2out_define (lineno
, buffer
);
4448 #endif /* DWARF2_DEBUGGING_INFO */
4451 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4452 the tail part of the directive line, i.e. the part which is past the
4453 initial whitespace, #, whitespace, directive-name, whitespace part. */
4456 debug_undef (lineno
, buffer
)
4457 register unsigned lineno
;
4458 register char *buffer
;
4460 #ifdef DWARF_DEBUGGING_INFO
4461 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4462 && write_symbols
== DWARF_DEBUG
)
4463 dwarfout_undef (lineno
, buffer
);
4464 #endif /* DWARF_DEBUGGING_INFO */
4465 #ifdef DWARF2_DEBUGGING_INFO
4466 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4467 && write_symbols
== DWARF2_DEBUG
)
4468 dwarf2out_undef (lineno
, buffer
);
4469 #endif /* DWARF2_DEBUGGING_INFO */