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 #ifdef DWARF2_DEBUGGING_INFO
130 #undef PREFERRED_DEBUGGING_TYPE
131 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
134 extern int rtx_equal_function_value_matters
;
136 #if ! (defined (VMS) || defined (OS2))
137 extern char **environ
;
139 extern char *version_string
, *language_string
;
141 /* Carry information from ASM_DECLARE_OBJECT_NAME
142 to ASM_FINISH_DECLARE_OBJECT. */
144 extern int size_directive_output
;
145 extern tree last_assemble_variable_decl
;
147 extern void init_lex ();
148 extern void init_decl_processing ();
149 extern void init_obstacks ();
150 extern void init_tree_codes ();
151 extern void init_rtl ();
152 extern void init_regs ();
153 extern void init_optabs ();
154 extern void init_stmt ();
155 extern void init_reg_sets ();
156 extern void dump_flow_info ();
157 extern void dump_sched_info ();
158 extern void dump_local_alloc ();
159 extern void regset_release_memory ();
161 void rest_of_decl_compilation ();
162 void error_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
163 void error_with_decl
PVPROTO((tree decl
, char *s
, ...));
164 void error_for_asm
PVPROTO((rtx insn
, char *s
, ...));
165 void error
PVPROTO((char *s
, ...));
166 void fatal
PVPROTO((char *s
, ...));
167 void warning_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
168 void warning_with_decl
PVPROTO((tree decl
, char *s
, ...));
169 void warning_for_asm
PVPROTO((rtx insn
, char *s
, ...));
170 void warning
PVPROTO((char *s
, ...));
171 void pedwarn
PVPROTO((char *s
, ...));
172 void pedwarn_with_decl
PVPROTO((tree decl
, char *s
, ...));
173 void pedwarn_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
174 void sorry
PVPROTO((char *s
, ...));
175 void really_sorry
PVPROTO((char *s
, ...));
180 void set_target_switch ();
181 static char *decl_name ();
183 void print_version ();
184 int print_single_switch ();
185 void print_switch_values ();
186 /* Length of line when printing switch values. */
190 extern char *sbrk ();
193 /* Name of program invoked, sans directories. */
197 /* Copy of arguments to main. */
201 /* Name of current original source file (what was input to cpp).
202 This comes from each #-command in the actual input. */
204 char *input_filename
;
206 /* Name of top-level original source file (what was input to cpp).
207 This comes from the #-command at the beginning of the actual input.
208 If there isn't any there, then this is the cc1 input file name. */
210 char *main_input_filename
;
213 /* Stream for reading from the input file. */
217 /* Current line number in real source file. */
221 /* Stack of currently pending input files. */
223 struct file_stack
*input_file_stack
;
225 /* Incremented on each change to input_file_stack. */
226 int input_file_stack_tick
;
228 /* FUNCTION_DECL for function now being parsed or compiled. */
230 extern tree current_function_decl
;
232 /* Name to use as base of names for dump output files. */
234 char *dump_base_name
;
236 /* Bit flags that specify the machine subtype we are compiling for.
237 Bits are tested using macros TARGET_... defined in the tm.h file
238 and set by `-m...' switches. Must be defined in rtlanal.c. */
240 extern int target_flags
;
242 /* Flags saying which kinds of debugging dump have been requested. */
245 int rtl_dump_and_exit
= 0;
246 int jump_opt_dump
= 0;
247 int addressof_dump
= 0;
251 int branch_prob_dump
= 0;
253 int combine_dump
= 0;
255 int local_reg_dump
= 0;
256 int global_reg_dump
= 0;
258 int jump2_opt_dump
= 0;
259 int dbr_sched_dump
= 0;
260 int flag_print_asm_name
= 0;
261 int stack_reg_dump
= 0;
263 /* Name for output file of assembly code, specified with -o. */
267 /* Value of the -G xx switch, and whether it was passed or not. */
271 /* Type(s) of debugging information we are producing (if any).
272 See flags.h for the definitions of the different possible
273 types of debugging information. */
274 enum debug_info_type write_symbols
= NO_DEBUG
;
276 /* Level of debugging information we are producing. See flags.h
277 for the definitions of the different possible levels. */
278 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
280 /* Nonzero means use GNU-only extensions in the generated symbolic
281 debugging information. */
282 /* Currently, this only has an effect when write_symbols is set to
283 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
284 int use_gnu_debug_info_extensions
= 0;
286 /* Nonzero means do optimizations. -O.
287 Particular numeric values stand for particular amounts of optimization;
288 thus, -O2 stores 2 here. However, the optimizations beyond the basic
289 ones are not controlled directly by this variable. Instead, they are
290 controlled by individual `flag_...' variables that are defaulted
291 based on this variable. */
295 /* Number of error messages and warning messages so far. */
298 int warningcount
= 0;
301 /* Flag to output bytecode instead of native assembler */
302 int output_bytecode
= 0;
304 /* Pointer to function to compute the name to use to print a declaration.
305 DECL is the declaration in question.
306 VERBOSITY determines what information will be printed:
307 0: DECL_NAME, demangled as necessary.
308 1: and scope information.
309 2: and any other information that might be interesting, such as function
310 parameter types in C++. */
312 char *(*decl_printable_name
) (/* tree decl, int verbosity */);
314 /* Pointer to function to compute rtl for a language-specific tree code. */
316 struct rtx_def
*(*lang_expand_expr
) ();
318 /* Pointer to function to finish handling an incomplete decl at the
319 end of compilation. */
321 void (*incomplete_decl_finalize_hook
) () = 0;
323 /* Highest label number used at the end of reload. */
325 int max_label_num_after_reload
;
327 /* Nonzero if generating code to do profiling. */
329 int profile_flag
= 0;
331 /* Nonzero if generating code to do profiling on a line-by-line basis. */
333 int profile_block_flag
;
335 /* Nonzero if generating code to profile program flow graph arcs. */
337 int profile_arc_flag
= 0;
339 /* Nonzero if generating info for gcov to calculate line test coverage. */
341 int flag_test_coverage
= 0;
343 /* Nonzero indicates that branch taken probabilities should be calculated. */
345 int flag_branch_probabilities
= 0;
347 /* Nonzero for -pedantic switch: warn about anything
348 that standard spec forbids. */
352 /* Temporarily suppress certain warnings.
353 This is set while reading code from a system header file. */
355 int in_system_header
= 0;
357 /* Nonzero means do stupid register allocation.
358 Currently, this is 1 if `optimize' is 0. */
360 int obey_regdecls
= 0;
362 /* Don't print functions as they are compiled and don't print
363 times taken by the various passes. -quiet. */
369 /* Nonzero means `char' should be signed. */
371 int flag_signed_char
;
373 /* Nonzero means give an enum type only as many bytes as it needs. */
375 int flag_short_enums
;
377 /* Nonzero for -fcaller-saves: allocate values in regs that need to
378 be saved across function calls, if that produces overall better code.
379 Optional now, so people can test it. */
381 #ifdef DEFAULT_CALLER_SAVES
382 int flag_caller_saves
= 1;
384 int flag_caller_saves
= 0;
387 /* Nonzero if structures and unions should be returned in memory.
389 This should only be defined if compatibility with another compiler or
390 with an ABI is needed, because it results in slower code. */
392 #ifndef DEFAULT_PCC_STRUCT_RETURN
393 #define DEFAULT_PCC_STRUCT_RETURN 1
396 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
398 int flag_pcc_struct_return
= DEFAULT_PCC_STRUCT_RETURN
;
400 /* Nonzero for -fforce-mem: load memory value into a register
401 before arithmetic on it. This makes better cse but slower compilation. */
403 int flag_force_mem
= 0;
405 /* Nonzero for -fforce-addr: load memory address into a register before
406 reference to memory. This makes better cse but slower compilation. */
408 int flag_force_addr
= 0;
410 /* Nonzero for -fdefer-pop: don't pop args after each function call;
411 instead save them up to pop many calls' args with one insns. */
413 int flag_defer_pop
= 0;
415 /* Nonzero for -ffloat-store: don't allocate floats and doubles
416 in extended-precision registers. */
418 int flag_float_store
= 0;
420 /* Nonzero for -fcse-follow-jumps:
421 have cse follow jumps to do a more extensive job. */
423 int flag_cse_follow_jumps
;
425 /* Nonzero for -fcse-skip-blocks:
426 have cse follow a branch around a block. */
427 int flag_cse_skip_blocks
;
429 /* Nonzero for -fexpensive-optimizations:
430 perform miscellaneous relatively-expensive optimizations. */
431 int flag_expensive_optimizations
;
433 /* Nonzero for -fthread-jumps:
434 have jump optimize output of loop. */
436 int flag_thread_jumps
;
438 /* Nonzero enables strength-reduction in loop.c. */
440 int flag_strength_reduce
= 0;
442 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
443 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
444 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
447 int flag_unroll_loops
;
449 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
450 This is generally not a win. */
452 int flag_unroll_all_loops
;
454 /* Nonzero for -fwritable-strings:
455 store string constants in data segment and don't uniquize them. */
457 int flag_writable_strings
= 0;
459 /* Nonzero means don't put addresses of constant functions in registers.
460 Used for compiling the Unix kernel, where strange substitutions are
461 done on the assembly output. */
463 int flag_no_function_cse
= 0;
465 /* Nonzero for -fomit-frame-pointer:
466 don't make a frame pointer in simple functions that don't require one. */
468 int flag_omit_frame_pointer
= 0;
470 /* Nonzero means place each function into its own section on those platforms
471 which support arbitrary section names and unlimited numbers of sections. */
473 int flag_function_sections
= 0;
475 /* Nonzero to inhibit use of define_optimization peephole opts. */
477 int flag_no_peephole
= 0;
479 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
480 operations in the interest of optimization. For example it allows
481 GCC to assume arguments to sqrt are nonnegative numbers, allowing
482 faster code for sqrt to be generated. */
484 int flag_fast_math
= 0;
486 /* Nonzero means all references through pointers are volatile. */
490 /* Nonzero means treat all global and extern variables as global. */
492 int flag_volatile_global
;
494 /* Nonzero means just do syntax checking; don't output anything. */
496 int flag_syntax_only
= 0;
498 /* Nonzero means to rerun cse after loop optimization. This increases
499 compilation time about 20% and picks up a few more common expressions. */
501 static int flag_rerun_cse_after_loop
;
503 /* Nonzero for -finline-functions: ok to inline functions that look like
504 good inline candidates. */
506 int flag_inline_functions
;
508 /* Nonzero for -fkeep-inline-functions: even if we make a function
509 go inline everywhere, keep its definition around for debugging
512 int flag_keep_inline_functions
;
514 /* Nonzero means that functions will not be inlined. */
518 /* Nonzero means that we should emit static const variables
519 regardless of whether or not optimization is turned on. */
521 int flag_keep_static_consts
= 1;
523 /* Nonzero means we should be saving declaration info into a .X file. */
525 int flag_gen_aux_info
= 0;
527 /* Specified name of aux-info file. */
529 static char *aux_info_file_name
;
531 /* Nonzero means make the text shared if supported. */
533 int flag_shared_data
;
535 /* Nonzero means schedule into delayed branch slots if supported. */
537 int flag_delayed_branch
;
539 /* Nonzero if we are compiling pure (sharable) code.
540 Value is 1 if we are doing reasonable (i.e. simple
541 offset into offset table) pic. Value is 2 if we can
542 only perform register offsets. */
546 /* Nonzero means generate extra code for exception handling and enable
547 exception handling. */
549 int flag_exceptions
= 1;
551 /* Nonzero means don't place uninitialized global data in common storage
556 /* Nonzero means pretend it is OK to examine bits of target floats,
557 even if that isn't true. The resulting code will have incorrect constants,
558 but the same series of instructions that the native compiler would make. */
560 int flag_pretend_float
;
562 /* Nonzero means change certain warnings into errors.
563 Usually these are warnings about failure to conform to some standard. */
565 int flag_pedantic_errors
= 0;
567 /* flag_schedule_insns means schedule insns within basic blocks (before
569 flag_schedule_insns_after_reload means schedule insns after
572 int flag_schedule_insns
= 0;
573 int flag_schedule_insns_after_reload
= 0;
575 /* -finhibit-size-directive inhibits output of .size for ELF.
576 This is used only for compiling crtstuff.c,
577 and it may be extended to other effects
578 needed for crtstuff.c on other systems. */
579 int flag_inhibit_size_directive
= 0;
581 /* -fverbose-asm causes extra commentary information to be produced in
582 the generated assembly code (to make it more readable). This option
583 is generally only of use to those who actually need to read the
584 generated assembly code (perhaps while debugging the compiler itself).
585 -fverbose-asm is the default. -fno-verbose-asm causes the extra information
586 to be omitted and is useful when comparing two assembler files. */
588 int flag_verbose_asm
= 1;
590 /* -dA causes debug commentary information to be produced in
591 the generated assembly code (to make it more readable). This option
592 is generally only of use to those who actually need to read the
593 generated assembly code (perhaps while debugging the compiler itself).
594 Currently, this switch is only used by dwarfout.c; however, it is intended
595 to be a catchall for printing debug information in the assembler file. */
597 int flag_debug_asm
= 0;
599 /* -fgnu-linker specifies use of the GNU linker for initializations.
600 (Or, more generally, a linker that handles initializations.)
601 -fno-gnu-linker says that collect2 will be used. */
603 int flag_gnu_linker
= 0;
605 int flag_gnu_linker
= 1;
608 /* Tag all structures with __attribute__(packed) */
609 int flag_pack_struct
= 0;
611 /* Emit code to check for stack overflow; also may cause large objects
612 to be allocated dynamically. */
613 int flag_stack_check
;
615 /* Table of language-independent -f options.
616 STRING is the option name. VARIABLE is the address of the variable.
617 ON_VALUE is the value to store in VARIABLE
618 if `-fSTRING' is seen as an option.
619 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
621 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
623 {"float-store", &flag_float_store
, 1},
624 {"volatile", &flag_volatile
, 1},
625 {"volatile-global", &flag_volatile_global
, 1},
626 {"defer-pop", &flag_defer_pop
, 1},
627 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
628 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
629 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
630 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
631 {"thread-jumps", &flag_thread_jumps
, 1},
632 {"strength-reduce", &flag_strength_reduce
, 1},
633 {"unroll-loops", &flag_unroll_loops
, 1},
634 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
635 {"writable-strings", &flag_writable_strings
, 1},
636 {"peephole", &flag_no_peephole
, 0},
637 {"force-mem", &flag_force_mem
, 1},
638 {"force-addr", &flag_force_addr
, 1},
639 {"function-cse", &flag_no_function_cse
, 0},
640 {"inline-functions", &flag_inline_functions
, 1},
641 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
642 {"inline", &flag_no_inline
, 0},
643 {"keep-static-consts", &flag_keep_static_consts
, 1},
644 {"syntax-only", &flag_syntax_only
, 1},
645 {"shared-data", &flag_shared_data
, 1},
646 {"caller-saves", &flag_caller_saves
, 1},
647 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
648 {"reg-struct-return", &flag_pcc_struct_return
, 0},
649 {"delayed-branch", &flag_delayed_branch
, 1},
650 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
651 {"pretend-float", &flag_pretend_float
, 1},
652 {"schedule-insns", &flag_schedule_insns
, 1},
653 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
654 {"pic", &flag_pic
, 1},
655 {"PIC", &flag_pic
, 2},
656 {"exceptions", &flag_exceptions
, 1},
657 {"sjlj-exceptions", &exceptions_via_longjmp
, 1},
658 {"asynchronous-exceptions", &asynchronous_exceptions
, 1},
659 {"profile-arcs", &profile_arc_flag
, 1},
660 {"test-coverage", &flag_test_coverage
, 1},
661 {"branch-probabilities", &flag_branch_probabilities
, 1},
662 {"fast-math", &flag_fast_math
, 1},
663 {"common", &flag_no_common
, 0},
664 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
665 {"function-sections", &flag_function_sections
, 1},
666 {"verbose-asm", &flag_verbose_asm
, 1},
667 {"gnu-linker", &flag_gnu_linker
, 1},
668 {"pack-struct", &flag_pack_struct
, 1},
669 {"stack-check", &flag_stack_check
, 1},
670 {"bytecode", &output_bytecode
, 1}
673 /* Table of language-specific options. */
675 char *lang_options
[] =
678 "-fallow-single-precision",
680 "-fsigned-bitfields",
681 "-funsigned-bitfields",
682 "-fno-signed-bitfields",
683 "-fno-unsigned-bitfields",
687 "-fno-unsigned-char",
703 "-fno-cond-mismatch",
704 "-fdollars-in-identifiers",
705 "-fno-dollars-in-identifiers",
714 "-Wbad-function-cast",
715 "-Wno-bad-function-cast",
719 "-Wno-char-subscripts",
735 "-Wno-missing-braces",
736 "-Wmissing-declarations",
737 "-Wno-missing-declarations",
738 "-Wmissing-prototypes",
739 "-Wno-missing-prototypes",
741 "-Wno-nested-externs",
745 "-Wno-pointer-arith",
747 "-Wno-redundant-decls",
750 "-Wstrict-prototypes",
751 "-Wno-strict-prototypes",
759 "-Wno-write-strings",
761 /* these are for obj c */
777 /* Options controlling warnings */
779 /* Don't print warning messages. -w. */
781 int inhibit_warnings
= 0;
783 /* Print various extra warnings. -W. */
785 int extra_warnings
= 0;
787 /* Treat warnings as errors. -Werror. */
789 int warnings_are_errors
= 0;
791 /* Nonzero to warn about unused local variables. */
795 /* Nonzero to warn about variables used before they are initialized. */
797 int warn_uninitialized
;
799 /* Nonzero means warn about all declarations which shadow others. */
803 /* Warn if a switch on an enum fails to have a case for every enum value. */
807 /* Nonzero means warn about function definitions that default the return type
808 or that use a null return and have a return-type other than void. */
810 int warn_return_type
;
812 /* Nonzero means warn about pointer casts that increase the required
813 alignment of the target type (and might therefore lead to a crash
814 due to a misaligned access). */
818 /* Nonzero means warn about any identifiers that match in the first N
819 characters. The value N is in `id_clash_len'. */
822 unsigned id_clash_len
;
824 /* Nonzero means warn about any objects definitions whose size is larger
825 than N bytes. Also want about function definitions whose returned
826 values are larger than N bytes. The value N is in `larger_than_size'. */
828 int warn_larger_than
;
829 unsigned larger_than_size
;
831 /* Nonzero means warn if inline function is too large. */
835 /* Warn if a function returns an aggregate,
836 since there are often incompatible calling conventions for doing this. */
838 int warn_aggregate_return
;
840 /* Likewise for -W. */
842 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
844 {"unused", &warn_unused
, 1},
845 {"error", &warnings_are_errors
, 1},
846 {"shadow", &warn_shadow
, 1},
847 {"switch", &warn_switch
, 1},
848 {"aggregate-return", &warn_aggregate_return
, 1},
849 {"cast-align", &warn_cast_align
, 1},
850 {"uninitialized", &warn_uninitialized
, 1},
851 {"inline", &warn_inline
, 1}
854 /* Output files for assembler code (real compiler output)
855 and debugging dumps. */
860 FILE *jump_opt_dump_file
;
861 FILE *addressof_dump_file
;
863 FILE *loop_dump_file
;
864 FILE *cse2_dump_file
;
865 FILE *branch_prob_dump_file
;
866 FILE *flow_dump_file
;
867 FILE *combine_dump_file
;
868 FILE *sched_dump_file
;
869 FILE *local_reg_dump_file
;
870 FILE *global_reg_dump_file
;
871 FILE *sched2_dump_file
;
872 FILE *jump2_opt_dump_file
;
873 FILE *dbr_sched_dump_file
;
874 FILE *stack_reg_dump_file
;
876 /* Time accumulators, to count the total time spent in various passes. */
880 int integration_time
;
885 int branch_prob_time
;
889 int local_alloc_time
;
890 int global_alloc_time
;
893 int shorten_branch_time
;
899 /* Return time used so far, in microseconds. */
909 struct rusage rusage
;
914 int proc_system_time
;
916 int child_system_time
;
928 return (clock() * 1000);
929 #else /* not _WIN32 */
932 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
935 getrusage (0, &rusage
);
936 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
937 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
940 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
946 #define TIMEVAR(VAR, BODY) \
947 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
950 print_time (str
, total
)
955 "time in %s: %d.%06d\n",
956 str
, total
/ 1000000, total
% 1000000);
959 /* Count an error or warning. Return 1 if the message should be printed. */
962 count_error (warningp
)
965 if (warningp
&& inhibit_warnings
)
968 if (warningp
&& !warnings_are_errors
)
972 static int warning_message
= 0;
974 if (warningp
&& !warning_message
)
976 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
985 /* Print a fatal error message. NAME is the text.
986 Also include a system error message based on `errno'. */
989 pfatal_with_name (name
)
992 fprintf (stderr
, "%s: ", progname
);
994 exit (FATAL_EXIT_CODE
);
998 fatal_io_error (name
)
1001 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
1002 exit (FATAL_EXIT_CODE
);
1005 /* Called to give a better error message for a bad insn rather than
1006 just calling abort(). */
1009 fatal_insn (message
, insn
)
1013 if (!output_bytecode
)
1019 fflush (asm_out_file
);
1021 fflush (aux_info_file
);
1023 fflush (rtl_dump_file
);
1024 if (jump_opt_dump_file
)
1025 fflush (jump_opt_dump_file
);
1026 if (addressof_dump_file
)
1027 fflush (addressof_dump_file
);
1029 fflush (cse_dump_file
);
1031 fflush (loop_dump_file
);
1033 fflush (cse2_dump_file
);
1035 fflush (flow_dump_file
);
1036 if (combine_dump_file
)
1037 fflush (combine_dump_file
);
1038 if (sched_dump_file
)
1039 fflush (sched_dump_file
);
1040 if (local_reg_dump_file
)
1041 fflush (local_reg_dump_file
);
1042 if (global_reg_dump_file
)
1043 fflush (global_reg_dump_file
);
1044 if (sched2_dump_file
)
1045 fflush (sched2_dump_file
);
1046 if (jump2_opt_dump_file
)
1047 fflush (jump2_opt_dump_file
);
1048 if (dbr_sched_dump_file
)
1049 fflush (dbr_sched_dump_file
);
1050 if (stack_reg_dump_file
)
1051 fflush (stack_reg_dump_file
);
1057 /* Called to give a better error message when we don't have an insn to match
1058 what we are looking for or if the insn's constraints aren't satisfied,
1059 rather than just calling abort(). */
1062 fatal_insn_not_found (insn
)
1065 if (INSN_CODE (insn
) < 0)
1066 fatal_insn ("internal error--unrecognizable insn:", insn
);
1068 fatal_insn ("internal error--insn does not satisfy its constraints:", insn
);
1071 /* This is the default decl_printable_name function. */
1074 decl_name (decl
, verbosity
)
1078 return IDENTIFIER_POINTER (DECL_NAME (decl
));
1081 static int need_error_newline
;
1083 /* Function of last error message;
1084 more generally, function such that if next error message is in it
1085 then we don't have to mention the function name. */
1086 static tree last_error_function
= NULL
;
1088 /* Used to detect when input_file_stack has changed since last described. */
1089 static int last_error_tick
;
1091 /* Called when the start of a function definition is parsed,
1092 this function prints on stderr the name of the function. */
1095 announce_function (decl
)
1100 if (rtl_dump_and_exit
)
1101 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1103 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, 2));
1105 need_error_newline
= 1;
1106 last_error_function
= current_function_decl
;
1110 /* The default function to print out name of current function that caused
1114 default_print_error_function (file
)
1117 if (last_error_function
!= current_function_decl
)
1119 char *kind
= "function";
1120 if (current_function_decl
!= 0
1121 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
1125 fprintf (stderr
, "%s: ", file
);
1127 if (current_function_decl
== NULL
)
1128 fprintf (stderr
, "At top level:\n");
1131 char *name
= (*decl_printable_name
) (current_function_decl
, 2);
1132 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
1135 last_error_function
= current_function_decl
;
1139 /* Called by report_error_function to print out function name.
1140 * Default may be overridden by language front-ends. */
1142 void (*print_error_function
) PROTO((char *)) = default_print_error_function
;
1144 /* Prints out, if necessary, the name of the current function
1145 that caused an error. Called from all error and warning functions. */
1148 report_error_function (file
)
1151 struct file_stack
*p
;
1153 if (need_error_newline
)
1155 fprintf (stderr
, "\n");
1156 need_error_newline
= 0;
1159 (*print_error_function
) (file
);
1161 if (input_file_stack
&& input_file_stack
->next
!= 0
1162 && input_file_stack_tick
!= last_error_tick
1163 && file
== input_filename
)
1165 fprintf (stderr
, "In file included");
1166 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1168 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
1170 fprintf (stderr
, ",\n ");
1172 fprintf (stderr
, ":\n");
1173 last_error_tick
= input_file_stack_tick
;
1177 /* Print a message. */
1180 vmessage (prefix
, s
, ap
)
1186 fprintf (stderr
, "%s: ", prefix
);
1189 vfprintf (stderr
, s
, ap
);
1192 HOST_WIDE_INT v1
= va_arg(ap
, HOST_WIDE_INT
);
1193 HOST_WIDE_INT v2
= va_arg(ap
, HOST_WIDE_INT
);
1194 HOST_WIDE_INT v3
= va_arg(ap
, HOST_WIDE_INT
);
1195 HOST_WIDE_INT v4
= va_arg(ap
, HOST_WIDE_INT
);
1196 fprintf (stderr
, s
, v1
, v2
, v3
, v4
);
1201 /* Print a message relevant to line LINE of file FILE. */
1204 v_message_with_file_and_line (file
, line
, prefix
, s
, ap
)
1212 fprintf (stderr
, "%s:%d: ", file
, line
);
1214 fprintf (stderr
, "%s: ", progname
);
1216 vmessage (prefix
, s
, ap
);
1217 fputc ('\n', stderr
);
1220 /* Print a message relevant to the given DECL. */
1223 v_message_with_decl (decl
, prefix
, s
, ap
)
1231 fprintf (stderr
, "%s:%d: ",
1232 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1235 fprintf (stderr
, "%s: ", prefix
);
1237 /* Do magic to get around lack of varargs support for insertion
1238 of arguments into existing list. We know that the decl is first;
1239 we ass_u_me that it will be printed with "%s". */
1241 for (p
= s
; *p
; ++p
)
1245 if (*(p
+ 1) == '%')
1252 if (p
> s
) /* Print the left-hand substring. */
1254 char fmt
[sizeof "%.255s"];
1257 if (width
> 255L) width
= 255L; /* arbitrary */
1258 sprintf (fmt
, "%%.%lds", width
);
1259 fprintf (stderr
, fmt
, s
);
1262 if (*p
== '%') /* Print the name. */
1264 char *n
= (DECL_NAME (decl
)
1265 ? (*decl_printable_name
) (decl
, 2)
1271 if (isalpha (*(p
- 1) & 0xFF))
1276 if (*p
) /* Print the rest of the message. */
1277 vmessage ((char *)NULL
, p
, ap
);
1279 fputc ('\n', stderr
);
1282 /* Figure file and line of the given INSN. */
1285 file_and_line_for_asm (insn
, pfile
, pline
)
1290 rtx body
= PATTERN (insn
);
1293 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1294 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1295 asmop
= SET_SRC (body
);
1296 else if (GET_CODE (body
) == ASM_OPERANDS
)
1298 else if (GET_CODE (body
) == PARALLEL
1299 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1300 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1301 else if (GET_CODE (body
) == PARALLEL
1302 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1303 asmop
= XVECEXP (body
, 0, 0);
1309 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1310 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1314 *pfile
= input_filename
;
1319 /* Report an error at line LINE of file FILE. */
1322 v_error_with_file_and_line (file
, line
, s
, ap
)
1329 report_error_function (file
);
1330 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1334 error_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1346 file
= va_arg (ap
, char *);
1347 line
= va_arg (ap
, int);
1348 s
= va_arg (ap
, char *);
1351 v_error_with_file_and_line (file
, line
, s
, ap
);
1355 /* Report an error at the declaration DECL.
1356 S is a format string which uses %s to substitute the declaration
1357 name; subsequent substitutions are a la printf. */
1360 v_error_with_decl (decl
, s
, ap
)
1366 report_error_function (DECL_SOURCE_FILE (decl
));
1367 v_message_with_decl (decl
, (char *)NULL
, s
, ap
);
1371 error_with_decl
VPROTO((tree decl
, char *s
, ...))
1382 decl
= va_arg (ap
, tree
);
1383 s
= va_arg (ap
, char *);
1386 v_error_with_decl (decl
, s
, ap
);
1390 /* Report an error at the line number of the insn INSN.
1391 This is used only when INSN is an `asm' with operands,
1392 and each ASM_OPERANDS records its own source file and line. */
1395 v_error_for_asm (insn
, s
, ap
)
1404 file_and_line_for_asm (insn
, &file
, &line
);
1405 report_error_function (file
);
1406 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1410 error_for_asm
VPROTO((rtx insn
, char *s
, ...))
1421 insn
= va_arg (ap
, rtx
);
1422 s
= va_arg (ap
, char *);
1425 v_error_for_asm (insn
, s
, ap
);
1429 /* Report an error at the current line number. */
1436 v_error_with_file_and_line (input_filename
, lineno
, s
, ap
);
1440 error
VPROTO((char *s
, ...))
1450 s
= va_arg (ap
, char *);
1457 /* Report a fatal error at the current line number. */
1465 exit (FATAL_EXIT_CODE
);
1469 fatal
VPROTO((char *s
, ...))
1479 s
= va_arg (ap
, char *);
1486 /* Report a warning at line LINE of file FILE. */
1489 v_warning_with_file_and_line (file
, line
, s
, ap
)
1495 if (count_error (1))
1497 report_error_function (file
);
1498 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1503 warning_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1515 file
= va_arg (ap
, char *);
1516 line
= va_arg (ap
, int);
1517 s
= va_arg (ap
, char *);
1520 v_warning_with_file_and_line (file
, line
, s
, ap
);
1524 /* Report a warning at the declaration DECL.
1525 S is a format string which uses %s to substitute the declaration
1526 name; subsequent substitutions are a la printf. */
1529 v_warning_with_decl (decl
, s
, ap
)
1534 if (count_error (1))
1536 report_error_function (DECL_SOURCE_FILE (decl
));
1537 v_message_with_decl (decl
, "warning", s
, ap
);
1542 warning_with_decl
VPROTO((tree decl
, char *s
, ...))
1553 decl
= va_arg (ap
, tree
);
1554 s
= va_arg (ap
, char *);
1557 v_warning_with_decl (decl
, s
, ap
);
1561 /* Report a warning at the line number of the insn INSN.
1562 This is used only when INSN is an `asm' with operands,
1563 and each ASM_OPERANDS records its own source file and line. */
1566 v_warning_for_asm (insn
, s
, ap
)
1571 if (count_error (1))
1576 file_and_line_for_asm (insn
, &file
, &line
);
1577 report_error_function (file
);
1578 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1583 warning_for_asm
VPROTO((rtx insn
, char *s
, ...))
1594 insn
= va_arg (ap
, rtx
);
1595 s
= va_arg (ap
, char *);
1598 v_warning_for_asm (insn
, s
, ap
);
1602 /* Report a warning at the current line number. */
1609 v_warning_with_file_and_line (input_filename
, lineno
, s
, ap
);
1613 warning
VPROTO((char *s
, ...))
1623 s
= va_arg (ap
, char *);
1630 /* These functions issue either warnings or errors depending on
1631 -pedantic-errors. */
1638 if (flag_pedantic_errors
)
1645 pedwarn
VPROTO((char *s
, ...))
1655 s
= va_arg (ap
, char *);
1663 v_pedwarn_with_decl (decl
, s
, ap
)
1668 /* We don't want -pedantic-errors to cause the compilation to fail from
1669 "errors" in system header files. Sometimes fixincludes can't fix what's
1670 broken (eg: unsigned char bitfields - fixing it may change the alignment
1671 which will cause programs to mysteriously fail because the C library
1672 or kernel uses the original layout). There's no point in issuing a
1673 warning either, it's just unnecessary noise. */
1675 if (! DECL_IN_SYSTEM_HEADER (decl
))
1677 if (flag_pedantic_errors
)
1678 v_error_with_decl (decl
, s
, ap
);
1680 v_warning_with_decl (decl
, s
, ap
);
1685 pedwarn_with_decl
VPROTO((tree decl
, char *s
, ...))
1696 decl
= va_arg (ap
, tree
);
1697 s
= va_arg (ap
, char *);
1700 v_pedwarn_with_decl (decl
, s
, ap
);
1705 v_pedwarn_with_file_and_line (file
, line
, s
, ap
)
1711 if (flag_pedantic_errors
)
1712 v_error_with_file_and_line (file
, line
, s
, ap
);
1714 v_warning_with_file_and_line (file
, line
, s
, ap
);
1718 pedwarn_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1730 file
= va_arg (ap
, char *);
1731 line
= va_arg (ap
, int);
1732 s
= va_arg (ap
, char *);
1735 v_pedwarn_with_file_and_line (file
, line
, s
, ap
);
1739 /* Apologize for not implementing some feature. */
1748 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1750 fprintf (stderr
, "%s: ", progname
);
1751 vmessage ("sorry, not implemented", s
, ap
);
1752 fputc ('\n', stderr
);
1756 sorry
VPROTO((char *s
, ...))
1766 s
= va_arg (ap
, char *);
1773 /* Apologize for not implementing some feature, then quit. */
1776 v_really_sorry (s
, ap
)
1782 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1784 fprintf (stderr
, "%s: ", progname
);
1785 vmessage ("sorry, not implemented", s
, ap
);
1786 fatal (" (fatal)\n");
1790 really_sorry
VPROTO((char *s
, ...))
1800 s
= va_arg (ap
, char *);
1803 v_really_sorry (s
, ap
);
1807 /* More 'friendly' abort that prints the line and file.
1808 config.h can #define abort fancy_abort if you like that sort of thing.
1810 I don't think this is actually a good idea.
1811 Other sorts of crashes will look a certain way.
1812 It is a good thing if crashes from calling abort look the same way.
1818 fatal ("internal gcc abort");
1821 /* This calls abort and is used to avoid problems when abort if a macro.
1822 It is used when we need to pass the address of abort. */
1830 /* When `malloc.c' is compiled with `rcheck' defined,
1831 it calls this function to report clobberage. */
1839 /* Same as `malloc' but report error if no memory available. */
1845 register char *value
= (char *) malloc (size
);
1846 if (value
== 0 && size
!= 0)
1847 fatal ("virtual memory exhausted");
1851 /* Same as `realloc' but report error if no memory available. */
1854 xrealloc (ptr
, size
)
1858 char *result
= (char *) realloc (ptr
, size
);
1860 fatal ("virtual memory exhausted");
1864 /* Same as `strdup' but report error if no memory available. */
1870 register char *result
= (char *) malloc (strlen (s
) + 1);
1873 fatal ("virtual memory exhausted");
1878 /* Return the logarithm of X, base 2, considering X unsigned,
1879 if X is a power of 2. Otherwise, returns -1.
1881 This should be used via the `exact_log2' macro. */
1885 register unsigned HOST_WIDE_INT x
;
1887 register int log
= 0;
1888 /* Test for 0 or a power of 2. */
1889 if (x
== 0 || x
!= (x
& -x
))
1891 while ((x
>>= 1) != 0)
1896 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1897 If X is 0, return -1.
1899 This should be used via the floor_log2 macro. */
1903 register unsigned HOST_WIDE_INT x
;
1905 register int log
= -1;
1912 static int float_handler_set
;
1914 jmp_buf float_handler
;
1916 /* Signals actually come here. */
1919 float_signal (signo
)
1920 /* If this is missing, some compilers complain. */
1923 if (float_handled
== 0)
1925 #if defined (USG) || defined (hpux)
1926 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1929 signal (SIGFPE
, float_signal
);
1930 longjmp (float_handler
, 1);
1933 /* Specify where to longjmp to when a floating arithmetic error happens.
1934 If HANDLER is 0, it means don't handle the errors any more. */
1937 set_float_handler (handler
)
1940 float_handled
= (handler
!= 0);
1942 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1944 if (float_handled
&& ! float_handler_set
)
1946 signal (SIGFPE
, float_signal
);
1947 float_handler_set
= 1;
1951 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1952 error happens, pushing the previous specification into OLD_HANDLER.
1953 Return an indication of whether there was a previous handler in effect. */
1956 push_float_handler (handler
, old_handler
)
1957 jmp_buf handler
, old_handler
;
1959 int was_handled
= float_handled
;
1963 bcopy ((char *) float_handler
, (char *) old_handler
,
1964 sizeof (float_handler
));
1966 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1970 /* Restore the previous specification of whether and where to longjmp to
1971 when a floating arithmetic error happens. */
1974 pop_float_handler (handled
, handler
)
1978 float_handled
= handled
;
1980 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
1983 /* Handler for SIGPIPE. */
1987 /* If this is missing, some compilers complain. */
1990 fatal ("output pipe has been closed");
1993 /* Strip off a legitimate source ending from the input string NAME of
1994 length LEN. Rather than having to know the names used by all of
1995 our front ends, we strip off an ending of a period followed by one,
1996 two, or three characters. */
1999 strip_off_ending (name
, len
)
2003 if (len
> 2 && name
[len
- 2] == '.')
2004 name
[len
- 2] = '\0';
2005 else if (len
> 3 && name
[len
- 3] == '.')
2006 name
[len
- 3] = '\0';
2007 else if (len
> 4 && name
[len
- 4] == '.')
2008 name
[len
- 4] = '\0';
2011 /* Output a quoted string. */
2014 output_quoted_string (asm_file
, string
)
2020 putc ('\"', asm_file
);
2021 while ((c
= *string
++) != 0)
2023 if (c
== '\"' || c
== '\\')
2024 putc ('\\', asm_file
);
2027 putc ('\"', asm_file
);
2030 /* Output a file name in the form wanted by System V. */
2033 output_file_directive (asm_file
, input_name
)
2037 int len
= strlen (input_name
);
2038 char *na
= input_name
+ len
;
2040 /* NA gets INPUT_NAME sans directory names. */
2041 while (na
> input_name
)
2048 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2049 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
2051 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2052 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
2054 fprintf (asm_file
, "\t.file\t");
2055 output_quoted_string (asm_file
, na
);
2056 fputc ('\n', asm_file
);
2061 /* Routine to build language identifier for object file. */
2064 output_lang_identify (asm_out_file
)
2067 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2068 char *s
= (char *) alloca (len
);
2069 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
2070 ASM_OUTPUT_LABEL (asm_out_file
, s
);
2073 /* Routine to open a dump file. */
2076 open_dump_file (base_name
, suffix
)
2081 char *dumpname
= (char *) alloca (strlen (base_name
) + strlen (suffix
) + 1);
2083 strcpy (dumpname
, base_name
);
2084 strcat (dumpname
, suffix
);
2085 f
= fopen (dumpname
, "w");
2087 pfatal_with_name (dumpname
);
2091 /* Compile an entire file of output from cpp, named NAME.
2092 Write a file of assembly output and various debugging dumps. */
2101 int name_specified
= name
!= 0;
2103 if (dump_base_name
== 0)
2104 dump_base_name
= name
? name
: "gccdump";
2108 integration_time
= 0;
2113 branch_prob_time
= 0;
2117 local_alloc_time
= 0;
2118 global_alloc_time
= 0;
2121 shorten_branch_time
= 0;
2128 /* Open input file. */
2130 if (name
== 0 || !strcmp (name
, "-"))
2136 finput
= fopen (name
, "r");
2138 pfatal_with_name (name
);
2140 #ifdef IO_BUFFER_SIZE
2141 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
2143 #endif /* !USE_CPPLIB */
2145 /* Initialize data in various passes. */
2154 /* Some of these really don't need to be called when generating bytecode,
2155 but the options would have to be parsed first to know that. -bson */
2157 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2158 || debug_info_level
== DINFO_LEVEL_VERBOSE
2159 || flag_test_coverage
);
2161 init_decl_processing ();
2169 if (flag_caller_saves
)
2170 init_caller_save ();
2172 /* If auxiliary info generation is desired, open the output file.
2173 This goes in the same directory as the source file--unlike
2174 all the other output files. */
2175 if (flag_gen_aux_info
)
2177 aux_info_file
= fopen (aux_info_file_name
, "w");
2178 if (aux_info_file
== 0)
2179 pfatal_with_name (aux_info_file_name
);
2182 /* If rtl dump desired, open the output file. */
2184 rtl_dump_file
= open_dump_file (dump_base_name
, ".rtl");
2186 /* If jump_opt dump desired, open the output file. */
2188 jump_opt_dump_file
= open_dump_file (dump_base_name
, ".jump");
2190 /* If addressof dump desired, open the output file. */
2192 addressof_dump_file
= open_dump_file (dump_base_name
, ".addressof");
2194 /* If cse dump desired, open the output file. */
2196 cse_dump_file
= open_dump_file (dump_base_name
, ".cse");
2198 /* If loop dump desired, open the output file. */
2200 loop_dump_file
= open_dump_file (dump_base_name
, ".loop");
2202 /* If cse2 dump desired, open the output file. */
2204 cse2_dump_file
= open_dump_file (dump_base_name
, ".cse2");
2206 /* If branch_prob dump desired, open the output file. */
2207 if (branch_prob_dump
)
2208 branch_prob_dump_file
= open_dump_file (dump_base_name
, ".bp");
2210 /* If flow dump desired, open the output file. */
2212 flow_dump_file
= open_dump_file (dump_base_name
, ".flow");
2214 /* If combine dump desired, open the output file. */
2216 combine_dump_file
= open_dump_file (dump_base_name
, ".combine");
2218 /* If scheduling dump desired, open the output file. */
2220 sched_dump_file
= open_dump_file (dump_base_name
, ".sched");
2222 /* If local_reg dump desired, open the output file. */
2224 local_reg_dump_file
= open_dump_file (dump_base_name
, ".lreg");
2226 /* If global_reg dump desired, open the output file. */
2227 if (global_reg_dump
)
2228 global_reg_dump_file
= open_dump_file (dump_base_name
, ".greg");
2230 /* If 2nd scheduling dump desired, open the output file. */
2232 sched2_dump_file
= open_dump_file (dump_base_name
, ".sched2");
2234 /* If jump2_opt dump desired, open the output file. */
2236 jump2_opt_dump_file
= open_dump_file (dump_base_name
, ".jump2");
2238 /* If dbr_sched dump desired, open the output file. */
2240 dbr_sched_dump_file
= open_dump_file (dump_base_name
, ".dbr");
2244 /* If stack_reg dump desired, open the output file. */
2246 stack_reg_dump_file
= open_dump_file (dump_base_name
, ".stack");
2250 /* Open assembler code output file. */
2252 if (! name_specified
&& asm_file_name
== 0)
2253 asm_out_file
= stdout
;
2256 int len
= strlen (dump_base_name
);
2257 register char *dumpname
= (char *) xmalloc (len
+ 6);
2258 strcpy (dumpname
, dump_base_name
);
2259 strip_off_ending (dumpname
, len
);
2260 strcat (dumpname
, ".s");
2261 if (asm_file_name
== 0)
2263 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
2264 strcpy (asm_file_name
, dumpname
);
2266 if (!strcmp (asm_file_name
, "-"))
2267 asm_out_file
= stdout
;
2269 asm_out_file
= fopen (asm_file_name
, "w");
2270 if (asm_out_file
== 0)
2271 pfatal_with_name (asm_file_name
);
2274 #ifdef IO_BUFFER_SIZE
2275 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
2276 _IOFBF
, IO_BUFFER_SIZE
);
2279 input_filename
= name
;
2281 /* Put an entry on the input file stack for the main input file. */
2283 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
2284 input_file_stack
->next
= 0;
2285 input_file_stack
->name
= input_filename
;
2287 /* Perform language-specific initialization.
2288 This may set main_input_filename. */
2291 /* If the input doesn't start with a #line, use the input name
2292 as the official input file name. */
2293 if (main_input_filename
== 0)
2294 main_input_filename
= name
;
2296 if (!output_bytecode
)
2298 ASM_FILE_START (asm_out_file
);
2300 #ifdef ASM_COMMENT_START
2301 if (flag_verbose_asm
)
2303 /* Print the list of options in effect. */
2304 print_version (asm_out_file
, ASM_COMMENT_START
);
2305 print_switch_values (asm_out_file
, 0, MAX_LINE
,
2306 ASM_COMMENT_START
, " ", "\n");
2307 /* Add a blank line here so it appears in assembler output but not
2309 fprintf (asm_out_file
, "\n");
2314 /* Output something to inform GDB that this compilation was by GCC. Also
2315 serves to tell GDB file consists of bytecodes. */
2316 if (output_bytecode
)
2317 fprintf (asm_out_file
, "bc_gcc2_compiled.:\n");
2320 #ifndef ASM_IDENTIFY_GCC
2321 fprintf (asm_out_file
, "gcc2_compiled.:\n");
2323 ASM_IDENTIFY_GCC (asm_out_file
);
2327 /* Output something to identify which front-end produced this file. */
2328 #ifdef ASM_IDENTIFY_LANGUAGE
2329 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
2332 #ifndef ASM_OUTPUT_SECTION_NAME
2333 if (flag_function_sections
)
2335 warning ("-ffunction-sections not supported for this target.");
2336 flag_function_sections
= 0;
2340 if (flag_function_sections
2341 && (profile_flag
|| profile_block_flag
))
2343 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2344 flag_function_sections
= 0;
2347 if (flag_function_sections
&& write_symbols
!= NO_DEBUG
)
2348 warning ("-ffunction-sections may affect debugging on some targets.");
2350 if (output_bytecode
)
2352 if (profile_flag
|| profile_block_flag
)
2353 error ("profiling not supported in bytecode compilation");
2357 /* ??? Note: There used to be a conditional here
2358 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2359 This was to guarantee separation between gcc_compiled. and
2360 the first function, for the sake of dbx on Suns.
2361 However, having the extra zero here confused the Emacs
2362 code for unexec, and might confuse other programs too.
2363 Therefore, I took out that change.
2364 In future versions we should find another way to solve
2365 that dbx problem. -- rms, 23 May 93. */
2367 /* Don't let the first function fall at the same address
2368 as gcc_compiled., if profiling. */
2369 if (profile_flag
|| profile_block_flag
)
2370 assemble_zeros (UNITS_PER_WORD
);
2373 /* If dbx symbol table desired, initialize writing it
2374 and output the predefined types. */
2375 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2376 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2377 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
2380 #ifdef SDB_DEBUGGING_INFO
2381 if (write_symbols
== SDB_DEBUG
)
2382 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
2385 #ifdef DWARF_DEBUGGING_INFO
2386 if (write_symbols
== DWARF_DEBUG
)
2387 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
2389 #ifdef DWARF2_DEBUGGING_INFO
2390 if (write_symbols
== DWARF2_DEBUG
)
2391 TIMEVAR (symout_time
, dwarf2out_init (asm_out_file
, main_input_filename
));
2394 /* Initialize yet another pass. */
2396 if (!output_bytecode
)
2397 init_final (main_input_filename
);
2398 init_branch_prob (dump_base_name
);
2400 start_time
= get_run_time ();
2402 /* Call the parser, which parses the entire file
2403 (calling rest_of_compilation for each function). */
2405 if (yyparse () != 0)
2407 if (errorcount
== 0)
2408 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
2410 /* In case there were missing closebraces,
2411 get us back to the global binding level. */
2412 while (! global_bindings_p ())
2416 output_func_start_profiler ();
2418 /* Compilation is now finished except for writing
2419 what's left of the symbol table output. */
2421 parse_time
+= get_run_time () - start_time
;
2423 parse_time
-= integration_time
;
2424 parse_time
-= varconst_time
;
2426 globals
= getdecls ();
2428 /* Really define vars that have had only a tentative definition.
2429 Really output inline functions that must actually be callable
2430 and have not been output so far. */
2433 int len
= list_length (globals
);
2434 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
2439 /* Process the decls in reverse order--earliest first.
2440 Put them into VEC from back to front, then take out from front. */
2442 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
2443 vec
[len
- i
- 1] = decl
;
2445 for (i
= 0; i
< len
; i
++)
2449 /* We're not deferring this any longer. */
2450 DECL_DEFER_OUTPUT (decl
) = 0;
2452 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2453 && incomplete_decl_finalize_hook
!= 0)
2454 (*incomplete_decl_finalize_hook
) (decl
);
2457 /* Now emit any global variables or functions that we have been putting
2458 off. We need to loop in case one of the things emitted here
2459 references another one which comes earlier in the list. */
2463 for (i
= 0; i
< len
; i
++)
2467 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
))
2470 /* Don't write out static consts, unless we still need them.
2472 We also keep static consts if not optimizing (for debugging),
2473 unless the user specified -fno-keep-static-consts.
2474 ??? They might be better written into the debug information.
2475 This is possible when using DWARF.
2477 A language processor that wants static constants to be always
2478 written out (even if it is not used) is responsible for
2479 calling rest_of_decl_compilation itself. E.g. the C front-end
2480 calls rest_of_decl_compilation from finish_decl.
2481 One motivation for this is that is conventional in some
2482 environments to write things like:
2483 static const char rcsid[] = "... version string ...";
2484 intending to force the string to be in the executable.
2486 A language processor that would prefer to have unneeded
2487 static constants "optimized away" would just defer writing
2488 them out until here. E.g. C++ does this, because static
2489 constants are often defined in header files.
2491 ??? A tempting alternative (for both C and C++) would be
2492 to force a constant to be written if and only if it is
2493 defined in a main file, as opposed to an include file. */
2495 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2496 && (! TREE_READONLY (decl
)
2497 || TREE_PUBLIC (decl
)
2498 || (!optimize
&& flag_keep_static_consts
)
2499 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2502 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2505 if (TREE_CODE (decl
) == FUNCTION_DECL
2506 && DECL_INITIAL (decl
) != 0
2507 && DECL_SAVED_INSNS (decl
) != 0
2508 && (flag_keep_inline_functions
2509 || TREE_PUBLIC (decl
)
2510 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2513 temporary_allocation ();
2514 output_inline_function (decl
);
2515 permanent_allocation (1);
2520 /* Now that all possible functions have been output, we can dump
2521 the exception table. */
2523 if (exception_table_p ())
2524 output_exception_table ();
2526 for (i
= 0; i
< len
; i
++)
2530 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2531 && ! TREE_ASM_WRITTEN (decl
))
2532 /* Cancel the RTL for this decl so that, if debugging info
2533 output for global variables is still to come,
2534 this one will be omitted. */
2535 DECL_RTL (decl
) = NULL
;
2537 /* Warn about any function
2538 declared static but not defined.
2539 We don't warn about variables,
2540 because many programs have static variables
2541 that exist only to get some text into the object file. */
2542 if (TREE_CODE (decl
) == FUNCTION_DECL
2544 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2545 && DECL_INITIAL (decl
) == 0
2546 && DECL_EXTERNAL (decl
)
2547 && ! DECL_ARTIFICIAL (decl
)
2548 && ! TREE_PUBLIC (decl
))
2550 pedwarn_with_decl (decl
,
2551 "`%s' declared `static' but never defined");
2552 /* This symbol is effectively an "extern" declaration now. */
2553 TREE_PUBLIC (decl
) = 1;
2554 assemble_external (decl
);
2557 /* Warn about static fns or vars defined but not used,
2558 but not about inline functions or static consts
2559 since defining those in header files is normal practice. */
2561 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2562 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2563 && ! DECL_IN_SYSTEM_HEADER (decl
)
2564 && ! DECL_EXTERNAL (decl
)
2565 && ! TREE_PUBLIC (decl
)
2566 && ! TREE_USED (decl
)
2567 && (TREE_CODE (decl
) == FUNCTION_DECL
|| ! DECL_REGISTER (decl
))
2568 /* The TREE_USED bit for file-scope decls
2569 is kept in the identifier, to handle multiple
2570 external decls in different scopes. */
2571 && ! TREE_USED (DECL_NAME (decl
)))
2572 warning_with_decl (decl
, "`%s' defined but not used");
2574 #ifdef SDB_DEBUGGING_INFO
2575 /* The COFF linker can move initialized global vars to the end.
2576 And that can screw up the symbol ordering.
2577 By putting the symbols in that order to begin with,
2578 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2579 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2580 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2581 && ! DECL_EXTERNAL (decl
)
2582 && DECL_RTL (decl
) != 0)
2583 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2585 /* Output COFF information for non-global
2586 file-scope initialized variables. */
2587 if (write_symbols
== SDB_DEBUG
2588 && TREE_CODE (decl
) == VAR_DECL
2589 && DECL_INITIAL (decl
)
2590 && ! DECL_EXTERNAL (decl
)
2591 && DECL_RTL (decl
) != 0
2592 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2593 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2594 #endif /* SDB_DEBUGGING_INFO */
2595 #ifdef DWARF_DEBUGGING_INFO
2596 /* Output DWARF information for file-scope tentative data object
2597 declarations, file-scope (extern) function declarations (which
2598 had no corresponding body) and file-scope tagged type declarations
2599 and definitions which have not yet been forced out. */
2601 if (write_symbols
== DWARF_DEBUG
2602 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2603 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2605 #ifdef DWARF2_DEBUGGING_INFO
2606 /* Output DWARF2 information for file-scope tentative data object
2607 declarations, file-scope (extern) function declarations (which
2608 had no corresponding body) and file-scope tagged type declarations
2609 and definitions which have not yet been forced out. */
2611 if (write_symbols
== DWARF2_DEBUG
2612 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2613 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2618 /* Write out any pending weak symbol declarations. */
2622 /* Do dbx symbols */
2623 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2624 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2625 TIMEVAR (symout_time
,
2627 dbxout_finish (asm_out_file
, main_input_filename
);
2631 #ifdef DWARF_DEBUGGING_INFO
2632 if (write_symbols
== DWARF_DEBUG
)
2633 TIMEVAR (symout_time
,
2639 #ifdef DWARF2_DEBUGGING_INFO
2640 if (write_symbols
== DWARF2_DEBUG
)
2641 TIMEVAR (symout_time
,
2643 dwarf2out_finish ();
2647 /* Output some stuff at end of file if nec. */
2649 if (!output_bytecode
)
2651 end_final (dump_base_name
);
2652 end_branch_prob (branch_prob_dump_file
);
2655 ASM_FILE_END (asm_out_file
);
2659 /* Language-specific end of compilation actions. */
2663 if (output_bytecode
)
2664 bc_write_file (asm_out_file
);
2666 /* Close the dump files. */
2668 if (flag_gen_aux_info
)
2670 fclose (aux_info_file
);
2672 unlink (aux_info_file_name
);
2676 fclose (rtl_dump_file
);
2679 fclose (jump_opt_dump_file
);
2682 fclose (addressof_dump_file
);
2685 fclose (cse_dump_file
);
2688 fclose (loop_dump_file
);
2691 fclose (cse2_dump_file
);
2693 if (branch_prob_dump
)
2694 fclose (branch_prob_dump_file
);
2697 fclose (flow_dump_file
);
2701 dump_combine_total_stats (combine_dump_file
);
2702 fclose (combine_dump_file
);
2706 fclose (sched_dump_file
);
2709 fclose (local_reg_dump_file
);
2711 if (global_reg_dump
)
2712 fclose (global_reg_dump_file
);
2715 fclose (sched2_dump_file
);
2718 fclose (jump2_opt_dump_file
);
2721 fclose (dbr_sched_dump_file
);
2725 fclose (stack_reg_dump_file
);
2728 /* Close non-debugging input and output files. Take special care to note
2729 whether fclose returns an error, since the pages might still be on the
2730 buffer chain while the file is open. */
2737 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
2738 fatal_io_error (asm_file_name
);
2740 /* Print the times. */
2744 fprintf (stderr
,"\n");
2745 print_time ("parse", parse_time
);
2747 if (!output_bytecode
)
2749 print_time ("integration", integration_time
);
2750 print_time ("jump", jump_time
);
2751 print_time ("cse", cse_time
);
2752 print_time ("loop", loop_time
);
2753 print_time ("cse2", cse2_time
);
2754 print_time ("branch-prob", branch_prob_time
);
2755 print_time ("flow", flow_time
);
2756 print_time ("combine", combine_time
);
2757 print_time ("sched", sched_time
);
2758 print_time ("local-alloc", local_alloc_time
);
2759 print_time ("global-alloc", global_alloc_time
);
2760 print_time ("sched2", sched2_time
);
2761 print_time ("dbranch", dbr_sched_time
);
2762 print_time ("shorten-branch", shorten_branch_time
);
2763 print_time ("stack-reg", stack_reg_time
);
2764 print_time ("final", final_time
);
2765 print_time ("varconst", varconst_time
);
2766 print_time ("symout", symout_time
);
2767 print_time ("dump", dump_time
);
2772 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2773 and TYPE_DECL nodes.
2775 This does nothing for local (non-static) variables.
2776 Otherwise, it sets up the RTL and outputs any assembler code
2777 (label definition, storage allocation and initialization).
2779 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2780 the assembler symbol name to be used. TOP_LEVEL is nonzero
2781 if this declaration is not within a function. */
2784 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
2790 /* Declarations of variables, and of functions defined elsewhere. */
2792 /* The most obvious approach, to put an #ifndef around where
2793 this macro is used, doesn't work since it's inside a macro call. */
2794 #ifndef ASM_FINISH_DECLARE_OBJECT
2795 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2798 /* Forward declarations for nested functions are not "external",
2799 but we need to treat them as if they were. */
2800 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
2801 || TREE_CODE (decl
) == FUNCTION_DECL
)
2802 TIMEVAR (varconst_time
,
2804 make_decl_rtl (decl
, asmspec
, top_level
);
2805 /* Initialized extern variable exists to be replaced
2806 with its value, or represents something that will be
2807 output in another file. */
2808 if (! (TREE_CODE (decl
) == VAR_DECL
2809 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
2810 && DECL_INITIAL (decl
) != 0
2811 && DECL_INITIAL (decl
) != error_mark_node
))
2812 /* Don't output anything
2813 when a tentative file-scope definition is seen.
2814 But at end of compilation, do output code for them. */
2815 if (! (! at_end
&& top_level
2816 && (DECL_INITIAL (decl
) == 0
2817 || DECL_INITIAL (decl
) == error_mark_node
)))
2818 assemble_variable (decl
, top_level
, at_end
, 0);
2819 if (!output_bytecode
2820 && decl
== last_assemble_variable_decl
)
2822 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
2826 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
2828 if (decode_reg_name (asmspec
) >= 0)
2830 DECL_RTL (decl
) = 0;
2831 make_decl_rtl (decl
, asmspec
, top_level
);
2834 error ("invalid register name `%s' for register variable", asmspec
);
2836 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2837 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2838 && TREE_CODE (decl
) == TYPE_DECL
)
2839 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
2841 #ifdef SDB_DEBUGGING_INFO
2842 else if (write_symbols
== SDB_DEBUG
&& top_level
2843 && TREE_CODE (decl
) == TYPE_DECL
)
2844 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2848 /* Called after finishing a record, union or enumeral type. */
2851 rest_of_type_compilation (type
, toplev
)
2855 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2856 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2857 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2859 #ifdef SDB_DEBUGGING_INFO
2860 if (write_symbols
== SDB_DEBUG
)
2861 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2865 /* This is called from finish_function (within yyparse)
2866 after each top-level definition is parsed.
2867 It is supposed to compile that function or variable
2868 and output the assembler code for it.
2869 After we return, the tree storage is freed. */
2872 rest_of_compilation (decl
)
2876 int start_time
= get_run_time ();
2878 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2879 to be restored after we finish compiling the function
2880 (for use when compiling inline calls to this function). */
2881 tree saved_block_tree
= 0;
2882 /* Likewise, for DECL_ARGUMENTS. */
2883 tree saved_arguments
= 0;
2886 if (output_bytecode
)
2889 /* If we are reconsidering an inline function
2890 at the end of compilation, skip the stuff for making it inline. */
2892 if (DECL_SAVED_INSNS (decl
) == 0)
2897 /* If requested, consider whether to make this function inline. */
2898 if (DECL_INLINE (decl
) || flag_inline_functions
)
2899 TIMEVAR (integration_time
,
2901 lose
= function_cannot_inline_p (decl
);
2902 if (lose
|| ! optimize
)
2904 if (warn_inline
&& DECL_INLINE (decl
))
2905 warning_with_decl (decl
, lose
);
2906 DECL_ABSTRACT_ORIGIN (decl
) = 0;
2907 /* Don't really compile an extern inline function.
2908 If we can't make it inline, pretend
2909 it was only declared. */
2910 if (DECL_EXTERNAL (decl
))
2912 DECL_INITIAL (decl
) = 0;
2913 goto exit_rest_of_compilation
;
2917 /* ??? Note that this has the effect of making it look
2918 like "inline" was specified for a function if we choose
2919 to inline it. This isn't quite right, but it's
2920 probably not worth the trouble to fix. */
2921 inlineable
= DECL_INLINE (decl
) = 1;
2924 insns
= get_insns ();
2926 /* Dump the rtl code if we are dumping rtl. */
2931 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
2932 (*decl_printable_name
) (decl
, 2));
2933 if (DECL_SAVED_INSNS (decl
))
2934 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
2935 print_rtl (rtl_dump_file
, insns
);
2936 fflush (rtl_dump_file
);
2939 /* If function is inline, and we don't yet know whether to
2940 compile it by itself, defer decision till end of compilation.
2941 finish_compilation will call rest_of_compilation again
2942 for those functions that need to be output. Also defer those
2943 functions that we are supposed to defer. We cannot defer
2944 functions containing nested functions since the nested function
2945 data is in our non-saved obstack. */
2947 /* If this is a nested inline, remove ADDRESSOF now so we can
2948 finish compiling ourselves. Otherwise, wait until EOF.
2949 We have to do this because the purge_addressof transformation
2950 changes the DECL_RTL for many variables, which confuses integrate. */
2951 if (DECL_INLINE (decl
))
2953 if (decl_function_context (decl
))
2954 purge_addressof (insns
);
2956 DECL_DEFER_OUTPUT (decl
) = 1;
2959 if (! current_function_contains_functions
2960 && (DECL_DEFER_OUTPUT (decl
)
2961 || (DECL_INLINE (decl
)
2962 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
2963 && ! flag_keep_inline_functions
)
2964 || DECL_EXTERNAL (decl
)))))
2966 DECL_DEFER_OUTPUT (decl
) = 1;
2968 /* If -Wreturn-type, we have to do a bit of compilation. */
2969 if (! warn_return_type
)
2971 #ifdef DWARF_DEBUGGING_INFO
2972 /* Generate the DWARF info for the "abstract" instance
2973 of a function which we may later generate inlined and/or
2974 out-of-line instances of. */
2975 if (write_symbols
== DWARF_DEBUG
)
2977 set_decl_abstract_flags (decl
, 1);
2978 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2979 set_decl_abstract_flags (decl
, 0);
2982 #ifdef DWARF2_DEBUGGING_INFO
2983 /* Generate the DWARF2 info for the "abstract" instance
2984 of a function which we may later generate inlined and/or
2985 out-of-line instances of. */
2986 if (write_symbols
== DWARF2_DEBUG
)
2988 set_decl_abstract_flags (decl
, 1);
2989 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2990 set_decl_abstract_flags (decl
, 0);
2993 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
2994 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
2995 goto exit_rest_of_compilation
;
2999 /* If we have to compile the function now, save its rtl and subdecls
3000 so that its compilation will not affect what others get. */
3001 if (inlineable
|| DECL_DEFER_OUTPUT (decl
))
3003 #ifdef DWARF_DEBUGGING_INFO
3004 /* Generate the DWARF info for the "abstract" instance of
3005 a function which we will generate an out-of-line instance
3006 of almost immediately (and which we may also later generate
3007 various inlined instances of). */
3008 if (write_symbols
== DWARF_DEBUG
)
3010 set_decl_abstract_flags (decl
, 1);
3011 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3012 set_decl_abstract_flags (decl
, 0);
3015 #ifdef DWARF2_DEBUGGING_INFO
3016 /* Generate the DWARF2 info for the "abstract" instance of
3017 a function which we will generate an out-of-line instance
3018 of almost immediately (and which we may also later generate
3019 various inlined instances of). */
3020 if (write_symbols
== DWARF2_DEBUG
)
3022 set_decl_abstract_flags (decl
, 1);
3023 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3024 set_decl_abstract_flags (decl
, 0);
3027 saved_block_tree
= DECL_INITIAL (decl
);
3028 saved_arguments
= DECL_ARGUMENTS (decl
);
3029 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
3030 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
3033 /* If specified extern inline but we aren't inlining it, we are
3035 if (DECL_INLINE (decl
) && DECL_EXTERNAL (decl
))
3036 goto exit_rest_of_compilation
;
3039 if (! DECL_DEFER_OUTPUT (decl
))
3040 TREE_ASM_WRITTEN (decl
) = 1;
3042 /* Now that integrate will no longer see our rtl, we need not distinguish
3043 between the return value of this function and the return value of called
3045 rtx_equal_function_value_matters
= 0;
3047 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3048 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
3050 goto exit_rest_of_compilation
;
3053 /* Add an unwinder for exception handling, if needed.
3054 This must be done before we finalize PIC code. */
3058 /* If we are doing position-independent code generation, now
3059 is the time to output special prologues and epilogues.
3060 We do not want to do this earlier, because it just clutters
3061 up inline functions with meaningless insns. */
3066 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3067 Note that that may have been done above, in save_for_inline_copying.
3068 The call to resume_temporary_allocation near the end of this function
3069 goes back to the usual state of affairs. This must be done after
3070 we've built up any unwinders for exception handling, and done
3071 the FINALIZE_PIC work, if necessary. */
3073 rtl_in_current_obstack ();
3075 insns
= get_insns ();
3077 /* Copy any shared structure that should not be shared. */
3079 unshare_all_rtl (insns
);
3081 /* Instantiate all virtual registers. */
3083 instantiate_virtual_regs (current_function_decl
, get_insns ());
3085 /* See if we have allocated stack slots that are not directly addressable.
3086 If so, scan all the insns and create explicit address computation
3087 for all references to such slots. */
3088 /* fixup_stack_slots (); */
3090 /* Find all the EH handlers. */
3091 find_exception_handler_labels ();
3093 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3094 are initialized and to compute whether control can drop off the end
3096 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3097 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3099 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3100 if (rtl_dump_and_exit
|| flag_syntax_only
|| DECL_DEFER_OUTPUT (decl
))
3101 goto exit_rest_of_compilation
;
3103 /* Dump rtl code after jump, if we are doing that. */
3108 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
3109 (*decl_printable_name
) (decl
, 2));
3110 print_rtl (jump_opt_dump_file
, insns
);
3111 fflush (jump_opt_dump_file
);
3114 /* Perform common subexpression elimination.
3115 Nonzero value from `cse_main' means that jumps were simplified
3116 and some code may now be unreachable, so do
3117 jump optimization again. */
3122 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
3123 (*decl_printable_name
) (decl
, 2));
3128 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
3130 if (flag_thread_jumps
)
3131 /* Hacks by tiemann & kenner. */
3132 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
3134 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
3136 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
3138 if (tem
|| optimize
> 1)
3139 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3142 /* Dump rtl code after cse, if we are doing that. */
3147 print_rtl (cse_dump_file
, insns
);
3148 fflush (cse_dump_file
);
3151 purge_addressof (insns
);
3152 reg_scan (insns
, max_reg_num (), 1);
3157 fprintf (addressof_dump_file
, "\n;; Function %s\n\n",
3158 (*decl_printable_name
) (decl
, 2));
3159 print_rtl (addressof_dump_file
, insns
);
3160 fflush (addressof_dump_file
);
3166 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
3167 (*decl_printable_name
) (decl
, 2));
3170 /* Move constant computations out of loops. */
3176 loop_optimize (insns
, loop_dump_file
);
3180 /* Dump rtl code after loop opt, if we are doing that. */
3185 print_rtl (loop_dump_file
, insns
);
3186 fflush (loop_dump_file
);
3192 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
3193 (*decl_printable_name
) (decl
, 2));
3196 if (optimize
> 0 && flag_rerun_cse_after_loop
)
3198 /* Running another jump optimization pass before the second
3199 cse pass sometimes simplifies the RTL enough to allow
3200 the second CSE pass to do a better job. Jump_optimize can change
3201 max_reg_num so we must rerun reg_scan afterwards.
3202 ??? Rework to not call reg_scan so often. */
3203 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3204 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3206 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
3207 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
3208 1, cse2_dump_file
));
3210 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3213 if (optimize
> 0 && flag_thread_jumps
)
3215 /* This pass of jump threading straightens out code
3216 that was kinked by loop optimization. */
3217 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3218 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
3220 /* Dump rtl code after cse, if we are doing that. */
3225 print_rtl (cse2_dump_file
, insns
);
3226 fflush (cse2_dump_file
);
3229 if (branch_prob_dump
)
3232 fprintf (branch_prob_dump_file
, "\n;; Function %s\n\n",
3233 (*decl_printable_name
) (decl
, 2));
3236 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
3237 TIMEVAR (branch_prob_time
,
3239 branch_prob (insns
, branch_prob_dump_file
);
3242 if (branch_prob_dump
)
3245 print_rtl (branch_prob_dump_file
, insns
);
3246 fflush (branch_prob_dump_file
);
3248 /* We are no longer anticipating cse in this function, at least. */
3250 cse_not_expected
= 1;
3252 /* Now we choose between stupid (pcc-like) register allocation
3253 (if we got the -noreg switch and not -opt)
3254 and smart register allocation. */
3256 if (optimize
> 0) /* Stupid allocation probably won't work */
3257 obey_regdecls
= 0; /* if optimizations being done. */
3261 /* Print function header into flow dump now
3262 because doing the flow analysis makes some of the dump. */
3267 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
3268 (*decl_printable_name
) (decl
, 2));
3275 regclass (insns
, max_reg_num ());
3276 stupid_life_analysis (insns
, max_reg_num (),
3282 /* Do control and data flow analysis,
3283 and write some of the results to dump file. */
3285 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
3287 if (warn_uninitialized
)
3289 uninitialized_vars_warning (DECL_INITIAL (decl
));
3290 setjmp_args_warning ();
3294 /* Dump rtl after flow analysis. */
3299 print_rtl (flow_dump_file
, insns
);
3300 fflush (flow_dump_file
);
3303 /* If -opt, try combining insns through substitution. */
3306 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
3308 /* Dump rtl code after insn combination. */
3313 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
3314 (*decl_printable_name
) (decl
, 2));
3315 dump_combine_stats (combine_dump_file
);
3316 print_rtl (combine_dump_file
, insns
);
3317 fflush (combine_dump_file
);
3320 /* Print function header into sched dump now
3321 because doing the sched analysis makes some of the dump. */
3326 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
3327 (*decl_printable_name
) (decl
, 2));
3330 if (optimize
> 0 && flag_schedule_insns
)
3332 /* Do control and data sched analysis,
3333 and write some of the results to dump file. */
3335 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
3338 /* Dump rtl after instruction scheduling. */
3343 print_rtl (sched_dump_file
, insns
);
3344 fflush (sched_dump_file
);
3347 /* Unless we did stupid register allocation,
3348 allocate pseudo-regs that are used only within 1 basic block. */
3351 TIMEVAR (local_alloc_time
,
3353 regclass (insns
, max_reg_num ());
3357 /* Dump rtl code after allocating regs within basic blocks. */
3362 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
3363 (*decl_printable_name
) (decl
, 2));
3364 dump_flow_info (local_reg_dump_file
);
3365 dump_local_alloc (local_reg_dump_file
);
3366 print_rtl (local_reg_dump_file
, insns
);
3367 fflush (local_reg_dump_file
);
3370 if (global_reg_dump
)
3372 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
3373 (*decl_printable_name
) (decl
, 2)));
3375 /* Save the last label number used so far, so reorg can tell
3376 when it's safe to kill spill regs. */
3377 max_label_num_after_reload
= max_label_num ();
3379 /* Unless we did stupid register allocation,
3380 allocate remaining pseudo-regs, then do the reload pass
3381 fixing up any insns that are invalid. */
3383 TIMEVAR (global_alloc_time
,
3386 failure
= global_alloc (global_reg_dump_file
);
3388 failure
= reload (insns
, 0, global_reg_dump_file
);
3391 if (global_reg_dump
)
3394 dump_global_regs (global_reg_dump_file
);
3395 print_rtl (global_reg_dump_file
, insns
);
3396 fflush (global_reg_dump_file
);
3400 goto exit_rest_of_compilation
;
3402 reload_completed
= 1;
3404 /* Do a very simple CSE pass over just the hard registers. */
3406 reload_cse_regs (insns
);
3408 /* On some machines, the prologue and epilogue code, or parts thereof,
3409 can be represented as RTL. Doing so lets us schedule insns between
3410 it and the rest of the code and also allows delayed branch
3411 scheduling to operate in the epilogue. */
3413 thread_prologue_and_epilogue_insns (insns
);
3415 if (optimize
> 0 && flag_schedule_insns_after_reload
)
3420 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
3421 (*decl_printable_name
) (decl
, 2));
3424 /* Do control and data sched analysis again,
3425 and write some more of the results to dump file. */
3427 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
3429 /* Dump rtl after post-reorder instruction scheduling. */
3434 print_rtl (sched2_dump_file
, insns
);
3435 fflush (sched2_dump_file
);
3439 #ifdef LEAF_REGISTERS
3441 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
3445 /* One more attempt to remove jumps to .+1
3446 left by dead-store-elimination.
3447 Also do cross-jumping this time
3448 and delete no-op move insns. */
3452 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
3455 /* Dump rtl code after jump, if we are doing that. */
3460 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
3461 (*decl_printable_name
) (decl
, 2));
3462 print_rtl (jump2_opt_dump_file
, insns
);
3463 fflush (jump2_opt_dump_file
);
3466 /* If a machine dependent reorganization is needed, call it. */
3467 #ifdef MACHINE_DEPENDENT_REORG
3468 MACHINE_DEPENDENT_REORG (insns
);
3471 /* If a scheduling pass for delayed branches is to be done,
3472 call the scheduling code. */
3475 if (optimize
> 0 && flag_delayed_branch
)
3477 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
3482 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
3483 (*decl_printable_name
) (decl
, 2));
3484 print_rtl (dbr_sched_dump_file
, insns
);
3485 fflush (dbr_sched_dump_file
);
3491 /* Shorten branches. */
3492 TIMEVAR (shorten_branch_time
,
3494 shorten_branches (get_insns ());
3498 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
3503 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
3504 (*decl_printable_name
) (decl
, 2));
3505 print_rtl (stack_reg_dump_file
, insns
);
3506 fflush (stack_reg_dump_file
);
3511 /* Now turn the rtl into assembler code. */
3513 TIMEVAR (final_time
,
3518 /* Get the function's name, as described by its RTL.
3519 This may be different from the DECL_NAME name used
3520 in the source file. */
3522 x
= DECL_RTL (decl
);
3523 if (GET_CODE (x
) != MEM
)
3526 if (GET_CODE (x
) != SYMBOL_REF
)
3528 fnname
= XSTR (x
, 0);
3530 assemble_start_function (decl
, fnname
);
3531 final_start_function (insns
, asm_out_file
, optimize
);
3532 final (insns
, asm_out_file
, optimize
, 0);
3533 final_end_function (insns
, asm_out_file
, optimize
);
3534 assemble_end_function (decl
, fnname
);
3535 fflush (asm_out_file
);
3537 /* Release all memory held by regsets now */
3538 regset_release_memory ();
3541 /* Write DBX symbols if requested */
3543 /* Note that for those inline functions where we don't initially
3544 know for certain that we will be generating an out-of-line copy,
3545 the first invocation of this routine (rest_of_compilation) will
3546 skip over this code by doing a `goto exit_rest_of_compilation;'.
3547 Later on, finish_compilation will call rest_of_compilation again
3548 for those inline functions that need to have out-of-line copies
3549 generated. During that call, we *will* be routed past here. */
3551 #ifdef DBX_DEBUGGING_INFO
3552 if (write_symbols
== DBX_DEBUG
)
3553 TIMEVAR (symout_time
, dbxout_function (decl
));
3556 #ifdef DWARF_DEBUGGING_INFO
3557 if (write_symbols
== DWARF_DEBUG
)
3558 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3561 #ifdef DWARF2_DEBUGGING_INFO
3562 if (write_symbols
== DWARF2_DEBUG
)
3563 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3566 exit_rest_of_compilation
:
3568 /* In case the function was not output,
3569 don't leave any temporary anonymous types
3570 queued up for sdb output. */
3571 #ifdef SDB_DEBUGGING_INFO
3572 if (write_symbols
== SDB_DEBUG
)
3573 sdbout_types (NULL_TREE
);
3576 /* Put back the tree of subblocks and list of arguments
3577 from before we copied them.
3578 Code generation and the output of debugging info may have modified
3579 the copy, but the original is unchanged. */
3581 if (saved_block_tree
!= 0)
3583 DECL_INITIAL (decl
) = saved_block_tree
;
3584 DECL_ARGUMENTS (decl
) = saved_arguments
;
3585 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
3588 reload_completed
= 0;
3590 /* Clear out the insn_length contents now that they are no longer valid. */
3591 init_insn_lengths ();
3593 /* Clear out the real_constant_chain before some of the rtx's
3594 it runs through become garbage. */
3596 clear_const_double_mem ();
3598 /* Cancel the effect of rtl_in_current_obstack. */
3600 resume_temporary_allocation ();
3602 /* Show no temporary slots allocated. */
3606 /* The parsing time is all the time spent in yyparse
3607 *except* what is spent in this function. */
3609 parse_time
-= get_run_time () - start_time
;
3612 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3613 Exit code is 35 if can't open files, 34 if fatal error,
3614 33 if had nonfatal errors, else success. */
3617 main (argc
, argv
, envp
)
3624 int flag_print_mem
= 0;
3625 int version_flag
= 0;
3628 /* save in case md file wants to emit args as a comment. */
3632 p
= argv
[0] + strlen (argv
[0]);
3633 while (p
!= argv
[0] && p
[-1] != '/'
3634 #ifdef DIR_SEPARATOR
3635 && p
[-1] != DIR_SEPARATOR
3642 /* Get rid of any avoidable limit on stack size. */
3646 /* Set the stack limit huge so that alloca does not fail. */
3647 getrlimit (RLIMIT_STACK
, &rlim
);
3648 rlim
.rlim_cur
= rlim
.rlim_max
;
3649 setrlimit (RLIMIT_STACK
, &rlim
);
3651 #endif /* RLIMIT_STACK */
3653 signal (SIGFPE
, float_signal
);
3656 signal (SIGPIPE
, pipe_closed
);
3659 decl_printable_name
= decl_name
;
3660 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
3662 /* Initialize whether `char' is signed. */
3663 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
3664 #ifdef DEFAULT_SHORT_ENUMS
3665 /* Initialize how much space enums occupy, by default. */
3666 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
3669 /* Scan to see what optimization level has been specified. That will
3670 determine the default value of many flags. */
3671 for (i
= 1; i
< argc
; i
++)
3673 if (!strcmp (argv
[i
], "-O"))
3677 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
3679 /* Handle -O2, -O3, -O69, ... */
3680 char *p
= &argv
[i
][2];
3684 if (! (c
>= '0' && c
<= '9'))
3687 optimize
= atoi (&argv
[i
][2]);
3691 obey_regdecls
= (optimize
== 0);
3696 flag_thread_jumps
= 1;
3698 flag_delayed_branch
= 1;
3700 #ifdef CAN_DEBUG_WITHOUT_FP
3701 flag_omit_frame_pointer
= 1;
3707 flag_cse_follow_jumps
= 1;
3708 flag_cse_skip_blocks
= 1;
3709 flag_expensive_optimizations
= 1;
3710 flag_strength_reduce
= 1;
3711 flag_rerun_cse_after_loop
= 1;
3712 flag_caller_saves
= 1;
3714 #ifdef INSN_SCHEDULING
3715 flag_schedule_insns
= 1;
3716 flag_schedule_insns_after_reload
= 1;
3722 flag_inline_functions
= 1;
3725 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3728 set_target_switch ("");
3730 #ifdef OPTIMIZATION_OPTIONS
3731 /* Allow default optimizations to be specified on a per-machine basis. */
3732 OPTIMIZATION_OPTIONS (optimize
);
3735 /* Initialize register usage now so switches may override. */
3738 for (i
= 1; i
< argc
; i
++)
3741 /* If this is a language-specific option,
3742 decode it in a language-specific way. */
3743 for (j
= 0; lang_options
[j
] != 0; j
++)
3744 if (!strncmp (argv
[i
], lang_options
[j
],
3745 strlen (lang_options
[j
])))
3747 if (lang_options
[j
] != 0)
3748 /* If the option is valid for *some* language,
3749 treat it as valid even if this language doesn't understand it. */
3750 lang_decode_option (argv
[i
]);
3751 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
3753 register char *str
= argv
[i
] + 1;
3758 set_target_switch (&str
[1]);
3759 else if (!strcmp (str
, "dumpbase"))
3761 dump_base_name
= argv
[++i
];
3763 else if (str
[0] == 'd')
3765 register char *p
= &str
[1];
3770 branch_prob_dump
= 1;
3774 global_reg_dump
= 1;
3781 cse_dump
= 1, cse2_dump
= 1;
3787 branch_prob_dump
= 1;
3802 global_reg_dump
= 1;
3823 flag_print_asm_name
= 1;
3844 rtl_dump_and_exit
= 1;
3851 else if (str
[0] == 'f')
3853 register char *p
= &str
[1];
3856 /* Some kind of -f option.
3857 P's value is the option sans `-f'.
3858 Search for it in the table of options. */
3861 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
3864 if (!strcmp (p
, f_options
[j
].string
))
3866 *f_options
[j
].variable
= f_options
[j
].on_value
;
3867 /* A goto here would be cleaner,
3868 but breaks the vax pcc. */
3871 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3872 && ! strcmp (p
+3, f_options
[j
].string
))
3874 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
3881 else if (!strncmp (p
, "fixed-", 6))
3882 fix_register (&p
[6], 1, 1);
3883 else if (!strncmp (p
, "call-used-", 10))
3884 fix_register (&p
[10], 0, 1);
3885 else if (!strncmp (p
, "call-saved-", 11))
3886 fix_register (&p
[11], 0, 0);
3888 error ("Invalid option `%s'", argv
[i
]);
3890 else if (str
[0] == 'O')
3892 register char *p
= str
+1;
3893 while (*p
&& *p
>= '0' && *p
<= '9')
3898 error ("Invalid option `%s'", argv
[i
]);
3900 else if (!strcmp (str
, "pedantic"))
3902 else if (!strcmp (str
, "pedantic-errors"))
3903 flag_pedantic_errors
= pedantic
= 1;
3904 else if (!strcmp (str
, "quiet"))
3906 else if (!strcmp (str
, "version"))
3908 else if (!strcmp (str
, "w"))
3909 inhibit_warnings
= 1;
3910 else if (!strcmp (str
, "W"))
3913 /* We save the value of warn_uninitialized, since if they put
3914 -Wuninitialized on the command line, we need to generate a
3915 warning about not using it without also specifying -O. */
3916 if (warn_uninitialized
!= 1)
3917 warn_uninitialized
= 2;
3919 else if (str
[0] == 'W')
3921 register char *p
= &str
[1];
3924 /* Some kind of -W option.
3925 P's value is the option sans `-W'.
3926 Search for it in the table of options. */
3929 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
3932 if (!strcmp (p
, W_options
[j
].string
))
3934 *W_options
[j
].variable
= W_options
[j
].on_value
;
3935 /* A goto here would be cleaner,
3936 but breaks the vax pcc. */
3939 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3940 && ! strcmp (p
+3, W_options
[j
].string
))
3942 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
3949 else if (!strncmp (p
, "id-clash-", 9))
3955 if (*endp
>= '0' && *endp
<= '9')
3959 error ("Invalid option `%s'", argv
[i
]);
3964 id_clash_len
= atoi (str
+ 10);
3967 else if (!strncmp (p
, "larger-than-", 12))
3969 char *endp
= p
+ 12;
3973 if (*endp
>= '0' && *endp
<= '9')
3977 error ("Invalid option `%s'", argv
[i
]);
3978 goto larger_than_lose
;
3981 warn_larger_than
= 1;
3982 larger_than_size
= atoi (str
+ 13);
3986 error ("Invalid option `%s'", argv
[i
]);
3988 else if (!strcmp (str
, "p"))
3992 else if (!strcmp (str
, "a"))
3994 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3995 warning ("`-a' option (basic block profile) not supported");
3997 profile_block_flag
= (profile_block_flag
< 2) ? 1 : 3;
4000 else if (!strcmp (str
, "ax"))
4002 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
4003 warning ("`-ax' option (jump profiling) not supported");
4005 profile_block_flag
= (!profile_block_flag
4006 || profile_block_flag
== 2) ? 2 : 3;
4009 else if (str
[0] == 'g')
4013 /* A lot of code assumes write_symbols == NO_DEBUG if the
4014 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
4015 of what debugging type has been selected). This records the
4016 selected type. It is an error to specify more than one
4018 static enum debug_info_type selected_debug_type
= NO_DEBUG
;
4019 /* Non-zero if debugging format has been explicitly set.
4020 -g and -ggdb don't explicitly set the debugging format so
4021 -gdwarf -g3 is equivalent to -gdwarf3. */
4022 static int type_explicitly_set_p
= 0;
4023 /* Table of supported debugging formats. */
4026 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
4027 constant expression, we use NO_DEBUG in its place. */
4028 enum debug_info_type debug_type
;
4029 int use_extensions_p
;
4030 } *da
, debug_args
[] = {
4031 { "g", NO_DEBUG
, DEFAULT_GDB_EXTENSIONS
},
4032 { "ggdb", NO_DEBUG
, 1 },
4033 #ifdef DBX_DEBUGGING_INFO
4034 { "gstabs", DBX_DEBUG
, 0 },
4035 { "gstabs+", DBX_DEBUG
, 1 },
4037 #ifdef DWARF_DEBUGGING_INFO
4038 { "gdwarf", DWARF_DEBUG
, 0 },
4039 { "gdwarf+", DWARF_DEBUG
, 1 },
4041 #ifdef DWARF2_DEBUGGING_INFO
4042 { "gdwarf-2", DWARF2_DEBUG
, 0 },
4044 #ifdef XCOFF_DEBUGGING_INFO
4045 { "gxcoff", XCOFF_DEBUG
, 0 },
4046 { "gxcoff+", XCOFF_DEBUG
, 1 },
4048 #ifdef SDB_DEBUGGING_INFO
4049 { "gcoff", SDB_DEBUG
, 0 },
4053 /* Indexed by enum debug_info_type. */
4054 static char *debug_type_names
[] = {
4055 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
4058 /* Look up STR in the table. */
4059 for (da
= debug_args
; da
->arg
; da
++)
4061 if (! strncmp (str
, da
->arg
, strlen (da
->arg
)))
4063 enum debug_info_type type
= da
->debug_type
;
4066 p
= str
+ strlen (da
->arg
);
4067 if (*p
&& (*p
< '0' || *p
> '9'))
4070 while (*q
&& (*q
>= '0' && *q
<= '9'))
4075 level
= 2; /* default debugging info level */
4076 if (*q
|| level
> 3)
4078 warning ("invalid debug level specification in option: `-%s'",
4080 /* ??? This error message is incorrect in the case of
4082 warning ("no debugging information will be generated");
4086 if (type
== NO_DEBUG
)
4088 type
= PREFERRED_DEBUGGING_TYPE
;
4089 if (len
> 1 && strncmp (str
, "ggdb", len
) == 0)
4091 #ifdef DWARF2_DEBUGGING_INFO
4092 type
= DWARF2_DEBUG
;
4093 #elif defined DBX_DEBUGGING_INFO
4099 if (type
== NO_DEBUG
)
4100 warning ("`-%s' not supported by this configuration of GCC",
4103 /* Does it conflict with an already selected type? */
4104 if (type_explicitly_set_p
4105 /* -g/-ggdb don't conflict with anything */
4106 && da
->debug_type
!= NO_DEBUG
4107 && type
!= selected_debug_type
)
4108 warning ("`-%s' ignored, conflicts with `-g%s'",
4109 str
, debug_type_names
[(int) selected_debug_type
]);
4112 /* If the format has already been set, -g/-ggdb
4113 only change the debug level. */
4114 if (type_explicitly_set_p
4115 && da
->debug_type
== NO_DEBUG
)
4116 ; /* don't change debugging type */
4119 selected_debug_type
= type
;
4120 type_explicitly_set_p
= da
->debug_type
!= NO_DEBUG
;
4122 write_symbols
= (level
== 0
4124 : selected_debug_type
);
4125 use_gnu_debug_info_extensions
= da
->use_extensions_p
;
4126 debug_info_level
= (enum debug_info_level
) level
;
4132 warning ("`-%s' not supported by this configuration of GCC",
4135 else if (!strcmp (str
, "o"))
4137 asm_file_name
= argv
[++i
];
4139 else if (str
[0] == 'G')
4141 g_switch_set
= TRUE
;
4142 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
4144 else if (!strncmp (str
, "aux-info", 8))
4146 flag_gen_aux_info
= 1;
4147 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
4150 error ("Invalid option `%s'", argv
[i
]);
4152 else if (argv
[i
][0] == '+')
4153 error ("Invalid option `%s'", argv
[i
]);
4158 /* Initialize for bytecode output. A good idea to do this as soon as
4159 possible after the "-f" options have been parsed. */
4160 if (output_bytecode
)
4162 #ifndef TARGET_SUPPORTS_BYTECODE
4163 /* Just die with a fatal error if not supported */
4164 fatal ("-fbytecode not supported for this target");
4172 /* Inlining does not work if not optimizing,
4173 so force it not to be done. */
4177 /* The c_decode_option and lang_decode_option functions set
4178 this to `2' if -Wall is used, so we can avoid giving out
4179 lots of errors for people who don't realize what -Wall does. */
4180 if (warn_uninitialized
== 1)
4181 warning ("-Wuninitialized is not supported without -O");
4184 #ifdef OVERRIDE_OPTIONS
4185 /* Some machines may reject certain combinations of options. */
4189 if (profile_block_flag
== 3)
4191 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
4192 profile_block_flag
= 2;
4195 /* Unrolling all loops implies that standard loop unrolling must also
4197 if (flag_unroll_all_loops
)
4198 flag_unroll_loops
= 1;
4199 /* Loop unrolling requires that strength_reduction be on also. Silently
4200 turn on strength reduction here if it isn't already on. Also, the loop
4201 unrolling code assumes that cse will be run after loop, so that must
4202 be turned on also. */
4203 if (flag_unroll_loops
)
4205 flag_strength_reduce
= 1;
4206 flag_rerun_cse_after_loop
= 1;
4209 /* Warn about options that are not supported on this machine. */
4210 #ifndef INSN_SCHEDULING
4211 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
4212 warning ("instruction scheduling not supported on this target machine");
4215 if (flag_delayed_branch
)
4216 warning ("this target machine does not have delayed branches");
4219 /* If we are in verbose mode, write out the version and maybe all the
4220 option flags in use. */
4223 print_version (stderr
, "");
4225 print_switch_values (stderr
, 0, MAX_LINE
, "", " ", "\n");
4228 compile_file (filename
);
4230 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN32__))
4233 char *lim
= (char *) sbrk (0);
4235 fprintf (stderr
, "Data size %d.\n",
4236 lim
- (char *) &environ
);
4240 system ("ps -l 1>&2");
4243 #endif /* not USG */
4245 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN32) */
4248 exit (FATAL_EXIT_CODE
);
4250 exit (FATAL_EXIT_CODE
);
4251 exit (SUCCESS_EXIT_CODE
);
4255 /* Decode -m switches. */
4257 /* Here is a table, controlled by the tm.h file, listing each -m switch
4258 and which bits in `target_switches' it should set or clear.
4259 If VALUE is positive, it is bits to set.
4260 If VALUE is negative, -VALUE is bits to clear.
4261 (The sign bit is not used so there is no confusion.) */
4263 struct {char *name
; int value
;} target_switches
[]
4266 /* This table is similar, but allows the switch to have a value. */
4268 #ifdef TARGET_OPTIONS
4269 struct {char *prefix
; char ** variable
;} target_options
[]
4273 /* Decode the switch -mNAME. */
4276 set_target_switch (name
)
4282 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4283 if (!strcmp (target_switches
[j
].name
, name
))
4285 if (target_switches
[j
].value
< 0)
4286 target_flags
&= ~-target_switches
[j
].value
;
4288 target_flags
|= target_switches
[j
].value
;
4292 #ifdef TARGET_OPTIONS
4294 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4296 int len
= strlen (target_options
[j
].prefix
);
4297 if (!strncmp (target_options
[j
].prefix
, name
, len
))
4299 *target_options
[j
].variable
= name
+ len
;
4306 error ("Invalid option `%s'", name
);
4309 /* Print version information to FILE.
4310 Each line begins with INDENT (for the case where FILE is the
4311 assembler output file). */
4314 print_version (file
, indent
)
4318 fprintf (file
, "%s%s%s version %s", indent
, *indent
!= 0 ? " " : "",
4319 language_string
, version_string
);
4320 fprintf (file
, " (%s)", TARGET_NAME
);
4323 #define __VERSION__ "[unknown]"
4325 fprintf (file
, " compiled by GNU C version %s.\n", __VERSION__
);
4327 fprintf (file
, " compiled by CC.\n");
4331 /* Print an option value and return the adjusted position in the line.
4332 ??? We don't handle error returns from fprintf (disk full); presumably
4333 other code will catch a disk full though. */
4336 print_single_switch (file
, pos
, max
, indent
, sep
, term
, type
, name
)
4339 char *indent
, *sep
, *term
, *type
, *name
;
4341 /* The ultrix fprintf returns 0 on success, so compute the result we want
4342 here since we need it for the following test. */
4343 int len
= strlen (sep
) + strlen (type
) + strlen (name
);
4348 fprintf (file
, "%s", term
);
4353 fprintf (file
, "%s", indent
);
4354 pos
= strlen (indent
);
4356 fprintf (file
, "%s%s%s", sep
, type
, name
);
4361 /* Print active target switches to FILE.
4362 POS is the current cursor position and MAX is the size of a "line".
4363 Each line begins with INDENT and ends with TERM.
4364 Each switch is separated from the next by SEP. */
4367 print_switch_values (file
, pos
, max
, indent
, sep
, term
)
4370 char *indent
, *sep
, *term
;
4375 /* Print the options as passed. */
4377 pos
= print_single_switch (file
, pos
, max
, indent
, *indent
? " " : "", term
,
4378 "options passed: ", "");
4380 for (p
= &save_argv
[1]; *p
!= NULL
; p
++)
4384 if (strcmp (*p
, "-o") == 0)
4390 if (strcmp (*p
, "-quiet") == 0)
4392 if (strcmp (*p
, "-version") == 0)
4397 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
, *p
, "");
4400 fprintf (file
, "%s", term
);
4402 /* Print the -f and -m options that have been enabled.
4403 We don't handle language specific options but printing argv
4406 pos
= print_single_switch (file
, 0, max
, indent
, *indent
? " " : "", term
,
4407 "options enabled: ", "");
4409 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
4410 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
4411 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4412 "-f", f_options
[j
].string
);
4414 /* Print target specific options. */
4416 flags
= target_flags
;
4417 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4418 if (target_switches
[j
].name
[0] != '\0'
4419 && target_switches
[j
].value
> 0
4420 && ((target_switches
[j
].value
& target_flags
)
4421 == target_switches
[j
].value
))
4423 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4424 "-m", target_switches
[j
].name
);
4425 flags
&= ~ target_switches
[j
].value
;
4428 #ifdef TARGET_OPTIONS
4429 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4430 if (*target_options
[j
].variable
!= NULL
)
4433 sprintf (prefix
, "-m%s", target_options
[j
].prefix
);
4434 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4435 prefix
, *target_options
[j
].variable
);
4439 fprintf (file
, "%s", term
);
4442 /* Record the beginning of a new source file, named FILENAME. */
4445 debug_start_source_file (filename
)
4446 register char *filename
;
4448 #ifdef DBX_DEBUGGING_INFO
4449 if (write_symbols
== DBX_DEBUG
)
4450 dbxout_start_new_source_file (filename
);
4452 #ifdef DWARF_DEBUGGING_INFO
4453 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4454 && write_symbols
== DWARF_DEBUG
)
4455 dwarfout_start_new_source_file (filename
);
4456 #endif /* DWARF_DEBUGGING_INFO */
4457 #ifdef DWARF2_DEBUGGING_INFO
4458 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4459 && write_symbols
== DWARF2_DEBUG
)
4460 dwarf2out_start_source_file (filename
);
4461 #endif /* DWARF2_DEBUGGING_INFO */
4462 #ifdef SDB_DEBUGGING_INFO
4463 if (write_symbols
== SDB_DEBUG
)
4464 sdbout_start_new_source_file (filename
);
4468 /* Record the resumption of a source file. LINENO is the line number in
4469 the source file we are returning to. */
4472 debug_end_source_file (lineno
)
4473 register unsigned lineno
;
4475 #ifdef DBX_DEBUGGING_INFO
4476 if (write_symbols
== DBX_DEBUG
)
4477 dbxout_resume_previous_source_file ();
4479 #ifdef DWARF_DEBUGGING_INFO
4480 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4481 && write_symbols
== DWARF_DEBUG
)
4482 dwarfout_resume_previous_source_file (lineno
);
4483 #endif /* DWARF_DEBUGGING_INFO */
4484 #ifdef DWARF2_DEBUGGING_INFO
4485 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4486 && write_symbols
== DWARF2_DEBUG
)
4487 dwarf2out_end_source_file ();
4488 #endif /* DWARF2_DEBUGGING_INFO */
4489 #ifdef SDB_DEBUGGING_INFO
4490 if (write_symbols
== SDB_DEBUG
)
4491 sdbout_resume_previous_source_file ();
4495 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4496 the tail part of the directive line, i.e. the part which is past the
4497 initial whitespace, #, whitespace, directive-name, whitespace part. */
4500 debug_define (lineno
, buffer
)
4501 register unsigned lineno
;
4502 register char *buffer
;
4504 #ifdef DWARF_DEBUGGING_INFO
4505 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4506 && write_symbols
== DWARF_DEBUG
)
4507 dwarfout_define (lineno
, buffer
);
4508 #endif /* DWARF_DEBUGGING_INFO */
4509 #ifdef DWARF2_DEBUGGING_INFO
4510 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4511 && write_symbols
== DWARF2_DEBUG
)
4512 dwarf2out_define (lineno
, buffer
);
4513 #endif /* DWARF2_DEBUGGING_INFO */
4516 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4517 the tail part of the directive line, i.e. the part which is past the
4518 initial whitespace, #, whitespace, directive-name, whitespace part. */
4521 debug_undef (lineno
, buffer
)
4522 register unsigned lineno
;
4523 register char *buffer
;
4525 #ifdef DWARF_DEBUGGING_INFO
4526 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4527 && write_symbols
== DWARF_DEBUG
)
4528 dwarfout_undef (lineno
, buffer
);
4529 #endif /* DWARF_DEBUGGING_INFO */
4530 #ifdef DWARF2_DEBUGGING_INFO
4531 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4532 && write_symbols
== DWARF2_DEBUG
)
4533 dwarf2out_undef (lineno
, buffer
);
4534 #endif /* DWARF2_DEBUGGING_INFO */