1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92-6, 1997 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* This is the top level of cc1/c++.
22 It parses command args, opens files, invokes the various passes
23 in the proper order, and counts the time used by each.
24 Error messages and low-level interface to malloc also handled here. */
35 #include <sys/types.h>
42 #include <sys/param.h>
43 /* This is for hpux. It is a real screw. They should change hpux. */
45 #include <sys/times.h>
46 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
47 #undef FFS /* Some systems define this in param.h. */
51 #include <sys/resource.h>
60 #include "insn-attr.h"
67 #ifdef XCOFF_DEBUGGING_INFO
72 /* The extra parameters substantially improve the I/O performance. */
74 vms_fopen (fname
, type
)
78 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
79 fixed arguments, which matches ANSI's specification but not VAXCRTL's
80 pre-ANSI implementation. This hack circumvents the mismatch problem. */
81 FILE *(*vmslib_fopen
)() = (FILE *(*)()) fopen
;
84 return (*vmslib_fopen
) (fname
, type
, "mbc=32",
85 "deq=64", "fop=tef", "shr=nil");
87 return (*vmslib_fopen
) (fname
, type
, "mbc=32");
89 #define fopen vms_fopen
92 #ifndef DEFAULT_GDB_EXTENSIONS
93 #define DEFAULT_GDB_EXTENSIONS 1
96 /* If more than one debugging type is supported, you must define
97 PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
99 This is one long line cause VAXC can't handle a \-newline. */
100 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
101 #ifndef PREFERRED_DEBUGGING_TYPE
102 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
103 #endif /* no PREFERRED_DEBUGGING_TYPE */
104 #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
105 so the following code needn't care. */
106 #ifdef DBX_DEBUGGING_INFO
107 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
109 #ifdef SDB_DEBUGGING_INFO
110 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
112 #ifdef DWARF_DEBUGGING_INFO
113 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
115 #ifdef DWARF2_DEBUGGING_INFO
116 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
118 #ifdef XCOFF_DEBUGGING_INFO
119 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
121 #endif /* More than one debugger format enabled. */
123 /* If still not defined, must have been because no debugging formats
125 #ifndef PREFERRED_DEBUGGING_TYPE
126 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
129 extern int rtx_equal_function_value_matters
;
131 #if ! (defined (VMS) || defined (OS2))
132 extern char **environ
;
134 extern char *version_string
, *language_string
;
136 /* Carry information from ASM_DECLARE_OBJECT_NAME
137 to ASM_FINISH_DECLARE_OBJECT. */
139 extern int size_directive_output
;
140 extern tree last_assemble_variable_decl
;
142 extern void init_lex ();
143 extern void init_decl_processing ();
144 extern void init_obstacks ();
145 extern void init_tree_codes ();
146 extern void init_rtl ();
147 extern void init_regs ();
148 extern void init_optabs ();
149 extern void init_stmt ();
150 extern void init_reg_sets ();
151 extern void dump_flow_info ();
152 extern void dump_sched_info ();
153 extern void dump_local_alloc ();
154 extern void regset_release_memory ();
156 void rest_of_decl_compilation ();
157 void error_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
158 void error_with_decl
PVPROTO((tree decl
, char *s
, ...));
159 void error_for_asm
PVPROTO((rtx insn
, char *s
, ...));
160 void error
PVPROTO((char *s
, ...));
161 void fatal
PVPROTO((char *s
, ...));
162 void warning_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
163 void warning_with_decl
PVPROTO((tree decl
, char *s
, ...));
164 void warning_for_asm
PVPROTO((rtx insn
, char *s
, ...));
165 void warning
PVPROTO((char *s
, ...));
166 void pedwarn
PVPROTO((char *s
, ...));
167 void pedwarn_with_decl
PVPROTO((tree decl
, char *s
, ...));
168 void pedwarn_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
169 void sorry
PVPROTO((char *s
, ...));
170 void really_sorry
PVPROTO((char *s
, ...));
175 void set_target_switch ();
176 static char *decl_name ();
178 void print_version ();
179 int print_single_switch ();
180 void print_switch_values ();
181 /* Length of line when printing switch values. */
185 extern char *sbrk ();
188 /* Name of program invoked, sans directories. */
192 /* Copy of arguments to main. */
196 /* Name of current original source file (what was input to cpp).
197 This comes from each #-command in the actual input. */
199 char *input_filename
;
201 /* Name of top-level original source file (what was input to cpp).
202 This comes from the #-command at the beginning of the actual input.
203 If there isn't any there, then this is the cc1 input file name. */
205 char *main_input_filename
;
208 /* Stream for reading from the input file. */
212 /* Current line number in real source file. */
216 /* Stack of currently pending input files. */
218 struct file_stack
*input_file_stack
;
220 /* Incremented on each change to input_file_stack. */
221 int input_file_stack_tick
;
223 /* FUNCTION_DECL for function now being parsed or compiled. */
225 extern tree current_function_decl
;
227 /* Name to use as base of names for dump output files. */
229 char *dump_base_name
;
231 /* Bit flags that specify the machine subtype we are compiling for.
232 Bits are tested using macros TARGET_... defined in the tm.h file
233 and set by `-m...' switches. Must be defined in rtlanal.c. */
235 extern int target_flags
;
237 /* Flags saying which kinds of debugging dump have been requested. */
240 int rtl_dump_and_exit
= 0;
241 int jump_opt_dump
= 0;
245 int branch_prob_dump
= 0;
247 int combine_dump
= 0;
248 int regmove_dump
= 0;
250 int local_reg_dump
= 0;
251 int global_reg_dump
= 0;
253 int jump2_opt_dump
= 0;
254 int dbr_sched_dump
= 0;
255 int flag_print_asm_name
= 0;
256 int stack_reg_dump
= 0;
258 /* Name for output file of assembly code, specified with -o. */
262 /* Value of the -G xx switch, and whether it was passed or not. */
266 /* Type(s) of debugging information we are producing (if any).
267 See flags.h for the definitions of the different possible
268 types of debugging information. */
269 enum debug_info_type write_symbols
= NO_DEBUG
;
271 /* Level of debugging information we are producing. See flags.h
272 for the definitions of the different possible levels. */
273 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
275 /* Nonzero means use GNU-only extensions in the generated symbolic
276 debugging information. */
277 /* Currently, this only has an effect when write_symbols is set to
278 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
279 int use_gnu_debug_info_extensions
= 0;
281 /* Nonzero means do optimizations. -O.
282 Particular numeric values stand for particular amounts of optimization;
283 thus, -O2 stores 2 here. However, the optimizations beyond the basic
284 ones are not controlled directly by this variable. Instead, they are
285 controlled by individual `flag_...' variables that are defaulted
286 based on this variable. */
290 /* Number of error messages and warning messages so far. */
293 int warningcount
= 0;
296 /* Flag to output bytecode instead of native assembler */
297 int output_bytecode
= 0;
299 /* Pointer to function to compute the name to use to print a declaration.
300 DECL is the declaration in question.
301 VERBOSITY determines what information will be printed:
302 0: DECL_NAME, demangled as necessary.
303 1: and scope information.
304 2: and any other information that might be interesting, such as function
305 parameter types in C++. */
307 char *(*decl_printable_name
) (/* tree decl, int verbosity */);
309 /* Pointer to function to compute rtl for a language-specific tree code. */
311 struct rtx_def
*(*lang_expand_expr
) ();
313 /* Pointer to function to finish handling an incomplete decl at the
314 end of compilation. */
316 void (*incomplete_decl_finalize_hook
) () = 0;
318 /* Highest label number used at the end of reload. */
320 int max_label_num_after_reload
;
322 /* Nonzero if generating code to do profiling. */
324 int profile_flag
= 0;
326 /* Nonzero if generating code to do profiling on a line-by-line basis. */
328 int profile_block_flag
;
330 /* Nonzero if generating code to profile program flow graph arcs. */
332 int profile_arc_flag
= 0;
334 /* Nonzero if generating info for gcov to calculate line test coverage. */
336 int flag_test_coverage
= 0;
338 /* Nonzero indicates that branch taken probabilities should be calculated. */
340 int flag_branch_probabilities
= 0;
342 /* Nonzero for -pedantic switch: warn about anything
343 that standard spec forbids. */
347 /* Temporarily suppress certain warnings.
348 This is set while reading code from a system header file. */
350 int in_system_header
= 0;
352 /* Nonzero means do stupid register allocation.
353 Currently, this is 1 if `optimize' is 0. */
355 int obey_regdecls
= 0;
357 /* Don't print functions as they are compiled and don't print
358 times taken by the various passes. -quiet. */
364 /* Nonzero means `char' should be signed. */
366 int flag_signed_char
;
368 /* Nonzero means give an enum type only as many bytes as it needs. */
370 int flag_short_enums
;
372 /* Nonzero for -fcaller-saves: allocate values in regs that need to
373 be saved across function calls, if that produces overall better code.
374 Optional now, so people can test it. */
376 #ifdef DEFAULT_CALLER_SAVES
377 int flag_caller_saves
= 1;
379 int flag_caller_saves
= 0;
382 /* Nonzero if structures and unions should be returned in memory.
384 This should only be defined if compatibility with another compiler or
385 with an ABI is needed, because it results in slower code. */
387 #ifndef DEFAULT_PCC_STRUCT_RETURN
388 #define DEFAULT_PCC_STRUCT_RETURN 1
391 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
393 int flag_pcc_struct_return
= DEFAULT_PCC_STRUCT_RETURN
;
395 /* Nonzero for -fforce-mem: load memory value into a register
396 before arithmetic on it. This makes better cse but slower compilation. */
398 int flag_force_mem
= 0;
400 /* Nonzero for -fforce-addr: load memory address into a register before
401 reference to memory. This makes better cse but slower compilation. */
403 int flag_force_addr
= 0;
405 /* Nonzero for -fdefer-pop: don't pop args after each function call;
406 instead save them up to pop many calls' args with one insns. */
408 int flag_defer_pop
= 0;
410 /* Nonzero for -ffloat-store: don't allocate floats and doubles
411 in extended-precision registers. */
413 int flag_float_store
= 0;
415 /* Nonzero for -fcse-follow-jumps:
416 have cse follow jumps to do a more extensive job. */
418 int flag_cse_follow_jumps
;
420 /* Nonzero for -fcse-skip-blocks:
421 have cse follow a branch around a block. */
422 int flag_cse_skip_blocks
;
424 /* Nonzero for -fexpensive-optimizations:
425 perform miscellaneous relatively-expensive optimizations. */
426 int flag_expensive_optimizations
;
428 /* Nonzero for -fthread-jumps:
429 have jump optimize output of loop. */
431 int flag_thread_jumps
;
433 /* Nonzero enables strength-reduction in loop.c. */
435 int flag_strength_reduce
= 0;
437 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
438 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
439 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
442 int flag_unroll_loops
;
444 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
445 This is generally not a win. */
447 int flag_unroll_all_loops
;
449 /* Nonzero for -fwritable-strings:
450 store string constants in data segment and don't uniquize them. */
452 int flag_writable_strings
= 0;
454 /* Nonzero means don't put addresses of constant functions in registers.
455 Used for compiling the Unix kernel, where strange substitutions are
456 done on the assembly output. */
458 int flag_no_function_cse
= 0;
460 /* Nonzero for -fomit-frame-pointer:
461 don't make a frame pointer in simple functions that don't require one. */
463 int flag_omit_frame_pointer
= 0;
465 /* Nonzero means place each function into its own section on those platforms
466 which support arbitrary section names and unlimited numbers of sections. */
468 int flag_function_sections
= 0;
470 /* Nonzero to inhibit use of define_optimization peephole opts. */
472 int flag_no_peephole
= 0;
474 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
475 operations in the interest of optimization. For example it allows
476 GCC to assume arguments to sqrt are nonnegative numbers, allowing
477 faster code for sqrt to be generated. */
479 int flag_fast_math
= 0;
481 /* Nonzero means all references through pointers are volatile. */
485 /* Nonzero means treat all global and extern variables as global. */
487 int flag_volatile_global
;
489 /* Nonzero means just do syntax checking; don't output anything. */
491 int flag_syntax_only
= 0;
493 /* Nonzero means to rerun cse after loop optimization. This increases
494 compilation time about 20% and picks up a few more common expressions. */
496 static int flag_rerun_cse_after_loop
;
498 /* Nonzero for -finline-functions: ok to inline functions that look like
499 good inline candidates. */
501 int flag_inline_functions
;
503 /* Nonzero for -fkeep-inline-functions: even if we make a function
504 go inline everywhere, keep its definition around for debugging
507 int flag_keep_inline_functions
;
509 /* Nonzero means that functions will not be inlined. */
513 /* Nonzero means that we should emit static const variables
514 regardless of whether or not optimization is turned on. */
516 int flag_keep_static_consts
= 1;
518 /* Nonzero means we should be saving declaration info into a .X file. */
520 int flag_gen_aux_info
= 0;
522 /* Specified name of aux-info file. */
524 static char *aux_info_file_name
;
526 /* Nonzero means make the text shared if supported. */
528 int flag_shared_data
;
530 /* Nonzero means schedule into delayed branch slots if supported. */
532 int flag_delayed_branch
;
534 /* Nonzero if we are compiling pure (sharable) code.
535 Value is 1 if we are doing reasonable (i.e. simple
536 offset into offset table) pic. Value is 2 if we can
537 only perform register offsets. */
541 /* Nonzero means generate extra code for exception handling and enable
542 exception handling. */
544 int flag_exceptions
= 1;
546 /* Nonzero means don't place uninitialized global data in common storage
551 /* Nonzero means pretend it is OK to examine bits of target floats,
552 even if that isn't true. The resulting code will have incorrect constants,
553 but the same series of instructions that the native compiler would make. */
555 int flag_pretend_float
;
557 /* Nonzero means change certain warnings into errors.
558 Usually these are warnings about failure to conform to some standard. */
560 int flag_pedantic_errors
= 0;
562 /* flag_schedule_insns means schedule insns within basic blocks (before
564 flag_schedule_insns_after_reload means schedule insns after
567 int flag_schedule_insns
= 0;
568 int flag_schedule_insns_after_reload
= 0;
571 /* The following flags have effect only for scheduling before register
574 flag_schedule_interblock means schedule insns accross basic blocks.
575 flag_schedule_speculative means allow speculative motion of non-load insns.
576 flag_schedule_speculative_load means allow speculative motion of some
578 flag_schedule_speculative_load_dangerous allows speculative motion of more
580 flag_schedule_reverse_before_reload means try to reverse original order
582 flag_schedule_reverse_after_reload means try to reverse original order
585 int flag_schedule_interblock
= 1;
586 int flag_schedule_speculative
= 1;
587 int flag_schedule_speculative_load
= 0;
588 int flag_schedule_speculative_load_dangerous
= 0;
589 int flag_schedule_reverse_before_reload
= 0;
590 int flag_schedule_reverse_after_reload
= 0;
593 /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
594 by a cheaper branch, on a count register. */
595 int flag_branch_on_count_reg
;
599 /* -finhibit-size-directive inhibits output of .size for ELF.
600 This is used only for compiling crtstuff.c,
601 and it may be extended to other effects
602 needed for crtstuff.c on other systems. */
603 int flag_inhibit_size_directive
= 0;
605 /* -fverbose-asm causes extra commentary information to be produced in
606 the generated assembly code (to make it more readable). This option
607 is generally only of use to those who actually need to read the
608 generated assembly code (perhaps while debugging the compiler itself).
609 -fverbose-asm is the default. -fno-verbose-asm causes the extra information
610 to be omitted and is useful when comparing two assembler files. */
612 int flag_verbose_asm
= 1;
614 /* -dA causes debug commentary information to be produced in
615 the generated assembly code (to make it more readable). This option
616 is generally only of use to those who actually need to read the
617 generated assembly code (perhaps while debugging the compiler itself).
618 Currently, this switch is only used by dwarfout.c; however, it is intended
619 to be a catchall for printing debug information in the assembler file. */
621 int flag_debug_asm
= 0;
623 /* -fgnu-linker specifies use of the GNU linker for initializations.
624 (Or, more generally, a linker that handles initializations.)
625 -fno-gnu-linker says that collect2 will be used. */
627 int flag_gnu_linker
= 0;
629 int flag_gnu_linker
= 1;
632 /* Tag all structures with __attribute__(packed) */
633 int flag_pack_struct
= 0;
635 /* Emit code to check for stack overflow; also may cause large objects
636 to be allocated dynamically. */
637 int flag_stack_check
;
639 /* -fcheck-memory-usage causes extra code to be generated in order to check
640 memory accesses. This is used by a detector of bad memory accesses such
642 int flag_check_memory_usage
= 0;
644 /* -fprefix-function-name causes function name to be prefixed. This
645 can be used with -fcheck-memory-usage to isolate code compiled with
646 -fcheck-memory-usage. */
647 int flag_prefix_function_name
= 0;
649 int flag_regmove
= 0;
651 /* 1 if alias checking is on (by default, when -O). */
652 int flag_alias_check
= 0;
654 /* 0 if pointer arguments may alias each other. True in C.
655 1 if pointer arguments may not alias each other but may alias
657 2 if pointer arguments may not alias each other and may not
658 alias global variables. True in Fortran.
659 This defaults to 0 for C. */
660 int flag_argument_noalias
= 0;
662 /* Table of language-independent -f options.
663 STRING is the option name. VARIABLE is the address of the variable.
664 ON_VALUE is the value to store in VARIABLE
665 if `-fSTRING' is seen as an option.
666 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
668 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
670 {"float-store", &flag_float_store
, 1},
671 {"volatile", &flag_volatile
, 1},
672 {"volatile-global", &flag_volatile_global
, 1},
673 {"defer-pop", &flag_defer_pop
, 1},
674 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
675 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
676 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
677 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
678 {"thread-jumps", &flag_thread_jumps
, 1},
679 {"strength-reduce", &flag_strength_reduce
, 1},
680 {"unroll-loops", &flag_unroll_loops
, 1},
681 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
682 {"writable-strings", &flag_writable_strings
, 1},
683 {"peephole", &flag_no_peephole
, 0},
684 {"force-mem", &flag_force_mem
, 1},
685 {"force-addr", &flag_force_addr
, 1},
686 {"function-cse", &flag_no_function_cse
, 0},
687 {"inline-functions", &flag_inline_functions
, 1},
688 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
689 {"inline", &flag_no_inline
, 0},
690 {"keep-static-consts", &flag_keep_static_consts
, 1},
691 {"syntax-only", &flag_syntax_only
, 1},
692 {"shared-data", &flag_shared_data
, 1},
693 {"caller-saves", &flag_caller_saves
, 1},
694 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
695 {"reg-struct-return", &flag_pcc_struct_return
, 0},
696 {"delayed-branch", &flag_delayed_branch
, 1},
697 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
698 {"pretend-float", &flag_pretend_float
, 1},
699 {"schedule-insns", &flag_schedule_insns
, 1},
700 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
702 {"sched-interblock",&flag_schedule_interblock
, 1},
703 {"sched-spec",&flag_schedule_speculative
, 1},
704 {"sched-spec-load",&flag_schedule_speculative_load
, 1},
705 {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous
, 1},
706 {"sched-reverse-S",&flag_schedule_reverse_before_reload
, 1},
707 {"sched-reverse-R",&flag_schedule_reverse_after_reload
, 1},
708 {"branch-count-reg",&flag_branch_on_count_reg
, 1},
710 {"pic", &flag_pic
, 1},
711 {"PIC", &flag_pic
, 2},
712 {"exceptions", &flag_exceptions
, 1},
713 {"sjlj-exceptions", &exceptions_via_longjmp
, 1},
714 {"asynchronous-exceptions", &asynchronous_exceptions
, 1},
715 {"profile-arcs", &profile_arc_flag
, 1},
716 {"test-coverage", &flag_test_coverage
, 1},
717 {"branch-probabilities", &flag_branch_probabilities
, 1},
718 {"fast-math", &flag_fast_math
, 1},
719 {"common", &flag_no_common
, 0},
720 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
721 {"function-sections", &flag_function_sections
, 1},
722 {"verbose-asm", &flag_verbose_asm
, 1},
723 {"gnu-linker", &flag_gnu_linker
, 1},
724 {"regmove", &flag_regmove
, 1},
725 {"pack-struct", &flag_pack_struct
, 1},
726 {"stack-check", &flag_stack_check
, 1},
727 {"bytecode", &output_bytecode
, 1},
728 {"alias-check", &flag_alias_check
, 1},
729 {"argument-alias", &flag_argument_noalias
, 0},
730 {"argument-noalias", &flag_argument_noalias
, 1},
731 {"argument-noalias-global", &flag_argument_noalias
, 2},
732 {"check-memory-usage", &flag_check_memory_usage
, 1},
733 {"prefix-function-name", &flag_prefix_function_name
, 1}
736 /* Table of language-specific options. */
738 char *lang_options
[] =
741 "-fallow-single-precision",
743 "-fsigned-bitfields",
744 "-funsigned-bitfields",
745 "-fno-signed-bitfields",
746 "-fno-unsigned-bitfields",
750 "-fno-unsigned-char",
766 "-fno-cond-mismatch",
767 "-fdollars-in-identifiers",
768 "-fno-dollars-in-identifiers",
777 "-Wbad-function-cast",
778 "-Wno-bad-function-cast",
782 "-Wno-char-subscripts",
798 "-Wno-missing-braces",
799 "-Wmissing-declarations",
800 "-Wno-missing-declarations",
801 "-Wmissing-prototypes",
802 "-Wno-missing-prototypes",
804 "-Wno-nested-externs",
808 "-Wno-pointer-arith",
810 "-Wno-redundant-decls",
813 "-Wstrict-prototypes",
814 "-Wno-strict-prototypes",
822 "-Wno-write-strings",
824 /* these are for obj c */
840 /* Options controlling warnings */
842 /* Don't print warning messages. -w. */
844 int inhibit_warnings
= 0;
846 /* Print various extra warnings. -W. */
848 int extra_warnings
= 0;
850 /* Treat warnings as errors. -Werror. */
852 int warnings_are_errors
= 0;
854 /* Nonzero to warn about unused local variables. */
858 /* Nonzero to warn about variables used before they are initialized. */
860 int warn_uninitialized
;
862 /* Nonzero means warn about all declarations which shadow others. */
866 /* Warn if a switch on an enum fails to have a case for every enum value. */
870 /* Nonzero means warn about function definitions that default the return type
871 or that use a null return and have a return-type other than void. */
873 int warn_return_type
;
875 /* Nonzero means warn about pointer casts that increase the required
876 alignment of the target type (and might therefore lead to a crash
877 due to a misaligned access). */
881 /* Nonzero means warn about any identifiers that match in the first N
882 characters. The value N is in `id_clash_len'. */
885 unsigned id_clash_len
;
887 /* Nonzero means warn about any objects definitions whose size is larger
888 than N bytes. Also want about function definitions whose returned
889 values are larger than N bytes. The value N is in `larger_than_size'. */
891 int warn_larger_than
;
892 unsigned larger_than_size
;
894 /* Nonzero means warn if inline function is too large. */
898 /* Warn if a function returns an aggregate,
899 since there are often incompatible calling conventions for doing this. */
901 int warn_aggregate_return
;
903 /* Likewise for -W. */
905 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
907 {"unused", &warn_unused
, 1},
908 {"error", &warnings_are_errors
, 1},
909 {"shadow", &warn_shadow
, 1},
910 {"switch", &warn_switch
, 1},
911 {"aggregate-return", &warn_aggregate_return
, 1},
912 {"cast-align", &warn_cast_align
, 1},
913 {"uninitialized", &warn_uninitialized
, 1},
914 {"inline", &warn_inline
, 1}
917 /* Output files for assembler code (real compiler output)
918 and debugging dumps. */
923 FILE *jump_opt_dump_file
;
925 FILE *loop_dump_file
;
926 FILE *cse2_dump_file
;
927 FILE *branch_prob_dump_file
;
928 FILE *flow_dump_file
;
929 FILE *combine_dump_file
;
930 FILE *regmove_dump_file
;
931 FILE *sched_dump_file
;
932 FILE *local_reg_dump_file
;
933 FILE *global_reg_dump_file
;
934 FILE *sched2_dump_file
;
935 FILE *jump2_opt_dump_file
;
936 FILE *dbr_sched_dump_file
;
937 FILE *stack_reg_dump_file
;
939 /* Time accumulators, to count the total time spent in various passes. */
943 int integration_time
;
948 int branch_prob_time
;
953 int local_alloc_time
;
954 int global_alloc_time
;
957 int shorten_branch_time
;
963 /* Return time used so far, in microseconds. */
973 struct rusage rusage
;
978 int proc_system_time
;
980 int child_system_time
;
992 return (clock() * 1000);
993 #else /* not _WIN32 */
996 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
999 getrusage (0, &rusage
);
1000 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
1001 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
1004 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
1010 #define TIMEVAR(VAR, BODY) \
1011 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
1014 print_time (str
, total
)
1019 "time in %s: %d.%06d\n",
1020 str
, total
/ 1000000, total
% 1000000);
1023 /* Count an error or warning. Return 1 if the message should be printed. */
1026 count_error (warningp
)
1029 if (warningp
&& inhibit_warnings
)
1032 if (warningp
&& !warnings_are_errors
)
1036 static int warning_message
= 0;
1038 if (warningp
&& !warning_message
)
1040 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
1041 warning_message
= 1;
1049 /* Print a fatal error message. NAME is the text.
1050 Also include a system error message based on `errno'. */
1053 pfatal_with_name (name
)
1056 fprintf (stderr
, "%s: ", progname
);
1058 exit (FATAL_EXIT_CODE
);
1062 fatal_io_error (name
)
1065 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
1066 exit (FATAL_EXIT_CODE
);
1069 /* Called to give a better error message for a bad insn rather than
1070 just calling abort(). */
1073 fatal_insn (message
, insn
)
1077 if (!output_bytecode
)
1083 fflush (asm_out_file
);
1085 fflush (aux_info_file
);
1087 fflush (rtl_dump_file
);
1088 if (jump_opt_dump_file
)
1089 fflush (jump_opt_dump_file
);
1091 fflush (cse_dump_file
);
1093 fflush (loop_dump_file
);
1095 fflush (cse2_dump_file
);
1097 fflush (flow_dump_file
);
1098 if (combine_dump_file
)
1099 fflush (combine_dump_file
);
1100 if (regmove_dump_file
)
1101 fflush (regmove_dump_file
);
1102 if (sched_dump_file
)
1103 fflush (sched_dump_file
);
1104 if (local_reg_dump_file
)
1105 fflush (local_reg_dump_file
);
1106 if (global_reg_dump_file
)
1107 fflush (global_reg_dump_file
);
1108 if (sched2_dump_file
)
1109 fflush (sched2_dump_file
);
1110 if (jump2_opt_dump_file
)
1111 fflush (jump2_opt_dump_file
);
1112 if (dbr_sched_dump_file
)
1113 fflush (dbr_sched_dump_file
);
1114 if (stack_reg_dump_file
)
1115 fflush (stack_reg_dump_file
);
1121 /* Called to give a better error message when we don't have an insn to match
1122 what we are looking for or if the insn's constraints aren't satisfied,
1123 rather than just calling abort(). */
1126 fatal_insn_not_found (insn
)
1129 if (INSN_CODE (insn
) < 0)
1130 fatal_insn ("internal error--unrecognizable insn:", insn
);
1132 fatal_insn ("internal error--insn does not satisfy its constraints:", insn
);
1135 /* This is the default decl_printable_name function. */
1138 decl_name (decl
, verbosity
)
1142 return IDENTIFIER_POINTER (DECL_NAME (decl
));
1145 static int need_error_newline
;
1147 /* Function of last error message;
1148 more generally, function such that if next error message is in it
1149 then we don't have to mention the function name. */
1150 static tree last_error_function
= NULL
;
1152 /* Used to detect when input_file_stack has changed since last described. */
1153 static int last_error_tick
;
1155 /* Called when the start of a function definition is parsed,
1156 this function prints on stderr the name of the function. */
1159 announce_function (decl
)
1164 if (rtl_dump_and_exit
)
1165 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1167 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, 2));
1169 need_error_newline
= 1;
1170 last_error_function
= current_function_decl
;
1174 /* The default function to print out name of current function that caused
1178 default_print_error_function (file
)
1181 if (last_error_function
!= current_function_decl
)
1183 char *kind
= "function";
1184 if (current_function_decl
!= 0
1185 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
1189 fprintf (stderr
, "%s: ", file
);
1191 if (current_function_decl
== NULL
)
1192 fprintf (stderr
, "At top level:\n");
1195 char *name
= (*decl_printable_name
) (current_function_decl
, 2);
1196 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
1199 last_error_function
= current_function_decl
;
1203 /* Called by report_error_function to print out function name.
1204 * Default may be overridden by language front-ends. */
1206 void (*print_error_function
) PROTO((char *)) = default_print_error_function
;
1208 /* Prints out, if necessary, the name of the current function
1209 that caused an error. Called from all error and warning functions. */
1212 report_error_function (file
)
1215 struct file_stack
*p
;
1217 if (need_error_newline
)
1219 fprintf (stderr
, "\n");
1220 need_error_newline
= 0;
1223 (*print_error_function
) (file
);
1225 if (input_file_stack
&& input_file_stack
->next
!= 0
1226 && input_file_stack_tick
!= last_error_tick
1227 && file
== input_filename
)
1229 fprintf (stderr
, "In file included");
1230 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1232 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
1234 fprintf (stderr
, ",\n ");
1236 fprintf (stderr
, ":\n");
1237 last_error_tick
= input_file_stack_tick
;
1241 /* Print a message. */
1244 vmessage (prefix
, s
, ap
)
1250 fprintf (stderr
, "%s: ", prefix
);
1253 vfprintf (stderr
, s
, ap
);
1256 HOST_WIDE_INT v1
= va_arg(ap
, HOST_WIDE_INT
);
1257 HOST_WIDE_INT v2
= va_arg(ap
, HOST_WIDE_INT
);
1258 HOST_WIDE_INT v3
= va_arg(ap
, HOST_WIDE_INT
);
1259 HOST_WIDE_INT v4
= va_arg(ap
, HOST_WIDE_INT
);
1260 fprintf (stderr
, s
, v1
, v2
, v3
, v4
);
1265 /* Print a message relevant to line LINE of file FILE. */
1268 v_message_with_file_and_line (file
, line
, prefix
, s
, ap
)
1276 fprintf (stderr
, "%s:%d: ", file
, line
);
1278 fprintf (stderr
, "%s: ", progname
);
1280 vmessage (prefix
, s
, ap
);
1281 fputc ('\n', stderr
);
1284 /* Print a message relevant to the given DECL. */
1287 v_message_with_decl (decl
, prefix
, s
, ap
)
1295 fprintf (stderr
, "%s:%d: ",
1296 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1299 fprintf (stderr
, "%s: ", prefix
);
1301 /* Do magic to get around lack of varargs support for insertion
1302 of arguments into existing list. We know that the decl is first;
1303 we ass_u_me that it will be printed with "%s". */
1305 for (p
= s
; *p
; ++p
)
1309 if (*(p
+ 1) == '%')
1316 if (p
> s
) /* Print the left-hand substring. */
1318 char fmt
[sizeof "%.255s"];
1321 if (width
> 255L) width
= 255L; /* arbitrary */
1322 sprintf (fmt
, "%%.%lds", width
);
1323 fprintf (stderr
, fmt
, s
);
1326 if (*p
== '%') /* Print the name. */
1328 char *n
= (DECL_NAME (decl
)
1329 ? (*decl_printable_name
) (decl
, 2)
1335 if (isalpha (*(p
- 1) & 0xFF))
1340 if (*p
) /* Print the rest of the message. */
1341 vmessage ((char *)NULL
, p
, ap
);
1343 fputc ('\n', stderr
);
1346 /* Figure file and line of the given INSN. */
1349 file_and_line_for_asm (insn
, pfile
, pline
)
1354 rtx body
= PATTERN (insn
);
1357 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1358 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1359 asmop
= SET_SRC (body
);
1360 else if (GET_CODE (body
) == ASM_OPERANDS
)
1362 else if (GET_CODE (body
) == PARALLEL
1363 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1364 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1365 else if (GET_CODE (body
) == PARALLEL
1366 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1367 asmop
= XVECEXP (body
, 0, 0);
1373 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1374 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1378 *pfile
= input_filename
;
1383 /* Report an error at line LINE of file FILE. */
1386 v_error_with_file_and_line (file
, line
, s
, ap
)
1393 report_error_function (file
);
1394 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1398 error_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1410 file
= va_arg (ap
, char *);
1411 line
= va_arg (ap
, int);
1412 s
= va_arg (ap
, char *);
1415 v_error_with_file_and_line (file
, line
, s
, ap
);
1419 /* Report an error at the declaration DECL.
1420 S is a format string which uses %s to substitute the declaration
1421 name; subsequent substitutions are a la printf. */
1424 v_error_with_decl (decl
, s
, ap
)
1430 report_error_function (DECL_SOURCE_FILE (decl
));
1431 v_message_with_decl (decl
, (char *)NULL
, s
, ap
);
1435 error_with_decl
VPROTO((tree decl
, char *s
, ...))
1446 decl
= va_arg (ap
, tree
);
1447 s
= va_arg (ap
, char *);
1450 v_error_with_decl (decl
, s
, ap
);
1454 /* Report an error at the line number of the insn INSN.
1455 This is used only when INSN is an `asm' with operands,
1456 and each ASM_OPERANDS records its own source file and line. */
1459 v_error_for_asm (insn
, s
, ap
)
1468 file_and_line_for_asm (insn
, &file
, &line
);
1469 report_error_function (file
);
1470 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1474 error_for_asm
VPROTO((rtx insn
, char *s
, ...))
1485 insn
= va_arg (ap
, rtx
);
1486 s
= va_arg (ap
, char *);
1489 v_error_for_asm (insn
, s
, ap
);
1493 /* Report an error at the current line number. */
1500 v_error_with_file_and_line (input_filename
, lineno
, s
, ap
);
1504 error
VPROTO((char *s
, ...))
1514 s
= va_arg (ap
, char *);
1521 /* Report a fatal error at the current line number. */
1529 exit (FATAL_EXIT_CODE
);
1533 fatal
VPROTO((char *s
, ...))
1543 s
= va_arg (ap
, char *);
1550 /* Report a warning at line LINE of file FILE. */
1553 v_warning_with_file_and_line (file
, line
, s
, ap
)
1559 if (count_error (1))
1561 report_error_function (file
);
1562 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1567 warning_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1579 file
= va_arg (ap
, char *);
1580 line
= va_arg (ap
, int);
1581 s
= va_arg (ap
, char *);
1584 v_warning_with_file_and_line (file
, line
, s
, ap
);
1588 /* Report a warning at the declaration DECL.
1589 S is a format string which uses %s to substitute the declaration
1590 name; subsequent substitutions are a la printf. */
1593 v_warning_with_decl (decl
, s
, ap
)
1598 if (count_error (1))
1600 report_error_function (DECL_SOURCE_FILE (decl
));
1601 v_message_with_decl (decl
, "warning", s
, ap
);
1606 warning_with_decl
VPROTO((tree decl
, char *s
, ...))
1617 decl
= va_arg (ap
, tree
);
1618 s
= va_arg (ap
, char *);
1621 v_warning_with_decl (decl
, s
, ap
);
1625 /* Report a warning at the line number of the insn INSN.
1626 This is used only when INSN is an `asm' with operands,
1627 and each ASM_OPERANDS records its own source file and line. */
1630 v_warning_for_asm (insn
, s
, ap
)
1635 if (count_error (1))
1640 file_and_line_for_asm (insn
, &file
, &line
);
1641 report_error_function (file
);
1642 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1647 warning_for_asm
VPROTO((rtx insn
, char *s
, ...))
1658 insn
= va_arg (ap
, rtx
);
1659 s
= va_arg (ap
, char *);
1662 v_warning_for_asm (insn
, s
, ap
);
1666 /* Report a warning at the current line number. */
1673 v_warning_with_file_and_line (input_filename
, lineno
, s
, ap
);
1677 warning
VPROTO((char *s
, ...))
1687 s
= va_arg (ap
, char *);
1694 /* These functions issue either warnings or errors depending on
1695 -pedantic-errors. */
1702 if (flag_pedantic_errors
)
1709 pedwarn
VPROTO((char *s
, ...))
1719 s
= va_arg (ap
, char *);
1727 v_pedwarn_with_decl (decl
, s
, ap
)
1732 /* We don't want -pedantic-errors to cause the compilation to fail from
1733 "errors" in system header files. Sometimes fixincludes can't fix what's
1734 broken (eg: unsigned char bitfields - fixing it may change the alignment
1735 which will cause programs to mysteriously fail because the C library
1736 or kernel uses the original layout). There's no point in issuing a
1737 warning either, it's just unnecessary noise. */
1739 if (! DECL_IN_SYSTEM_HEADER (decl
))
1741 if (flag_pedantic_errors
)
1742 v_error_with_decl (decl
, s
, ap
);
1744 v_warning_with_decl (decl
, s
, ap
);
1749 pedwarn_with_decl
VPROTO((tree decl
, char *s
, ...))
1760 decl
= va_arg (ap
, tree
);
1761 s
= va_arg (ap
, char *);
1764 v_pedwarn_with_decl (decl
, s
, ap
);
1769 v_pedwarn_with_file_and_line (file
, line
, s
, ap
)
1775 if (flag_pedantic_errors
)
1776 v_error_with_file_and_line (file
, line
, s
, ap
);
1778 v_warning_with_file_and_line (file
, line
, s
, ap
);
1782 pedwarn_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1794 file
= va_arg (ap
, char *);
1795 line
= va_arg (ap
, int);
1796 s
= va_arg (ap
, char *);
1799 v_pedwarn_with_file_and_line (file
, line
, s
, ap
);
1803 /* Apologize for not implementing some feature. */
1812 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1814 fprintf (stderr
, "%s: ", progname
);
1815 vmessage ("sorry, not implemented", s
, ap
);
1816 fputc ('\n', stderr
);
1820 sorry
VPROTO((char *s
, ...))
1830 s
= va_arg (ap
, char *);
1837 /* Apologize for not implementing some feature, then quit. */
1840 v_really_sorry (s
, ap
)
1846 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1848 fprintf (stderr
, "%s: ", progname
);
1849 vmessage ("sorry, not implemented", s
, ap
);
1850 fatal (" (fatal)\n");
1854 really_sorry
VPROTO((char *s
, ...))
1864 s
= va_arg (ap
, char *);
1867 v_really_sorry (s
, ap
);
1871 /* More 'friendly' abort that prints the line and file.
1872 config.h can #define abort fancy_abort if you like that sort of thing.
1874 I don't think this is actually a good idea.
1875 Other sorts of crashes will look a certain way.
1876 It is a good thing if crashes from calling abort look the same way.
1882 fatal ("internal gcc abort");
1885 /* This calls abort and is used to avoid problems when abort if a macro.
1886 It is used when we need to pass the address of abort. */
1894 /* When `malloc.c' is compiled with `rcheck' defined,
1895 it calls this function to report clobberage. */
1903 /* Same as `malloc' but report error if no memory available. */
1909 register char *value
= (char *) malloc (size
);
1910 if (value
== 0 && size
!= 0)
1911 fatal ("virtual memory exhausted");
1915 /* Same as `realloc' but report error if no memory available. */
1918 xrealloc (ptr
, size
)
1922 char *result
= (char *) realloc (ptr
, size
);
1924 fatal ("virtual memory exhausted");
1928 /* Same as `strdup' but report error if no memory available. */
1934 register char *result
= (char *) malloc (strlen (s
) + 1);
1937 fatal ("virtual memory exhausted");
1942 /* Return the logarithm of X, base 2, considering X unsigned,
1943 if X is a power of 2. Otherwise, returns -1.
1945 This should be used via the `exact_log2' macro. */
1949 register unsigned HOST_WIDE_INT x
;
1951 register int log
= 0;
1952 /* Test for 0 or a power of 2. */
1953 if (x
== 0 || x
!= (x
& -x
))
1955 while ((x
>>= 1) != 0)
1960 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1961 If X is 0, return -1.
1963 This should be used via the floor_log2 macro. */
1967 register unsigned HOST_WIDE_INT x
;
1969 register int log
= -1;
1976 static int float_handler_set
;
1978 jmp_buf float_handler
;
1980 /* Signals actually come here. */
1983 float_signal (signo
)
1984 /* If this is missing, some compilers complain. */
1987 if (float_handled
== 0)
1989 #if defined (USG) || defined (hpux)
1990 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1993 signal (SIGFPE
, float_signal
);
1994 longjmp (float_handler
, 1);
1997 /* Specify where to longjmp to when a floating arithmetic error happens.
1998 If HANDLER is 0, it means don't handle the errors any more. */
2001 set_float_handler (handler
)
2004 float_handled
= (handler
!= 0);
2006 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2008 if (float_handled
&& ! float_handler_set
)
2010 signal (SIGFPE
, float_signal
);
2011 float_handler_set
= 1;
2015 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
2016 error happens, pushing the previous specification into OLD_HANDLER.
2017 Return an indication of whether there was a previous handler in effect. */
2020 push_float_handler (handler
, old_handler
)
2021 jmp_buf handler
, old_handler
;
2023 int was_handled
= float_handled
;
2027 bcopy ((char *) float_handler
, (char *) old_handler
,
2028 sizeof (float_handler
));
2030 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2034 /* Restore the previous specification of whether and where to longjmp to
2035 when a floating arithmetic error happens. */
2038 pop_float_handler (handled
, handler
)
2042 float_handled
= handled
;
2044 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2047 /* Handler for SIGPIPE. */
2051 /* If this is missing, some compilers complain. */
2054 fatal ("output pipe has been closed");
2057 /* Strip off a legitimate source ending from the input string NAME of
2058 length LEN. Rather than having to know the names used by all of
2059 our front ends, we strip off an ending of a period followed by one,
2060 two, or three characters. */
2063 strip_off_ending (name
, len
)
2067 if (len
> 2 && name
[len
- 2] == '.')
2068 name
[len
- 2] = '\0';
2069 else if (len
> 3 && name
[len
- 3] == '.')
2070 name
[len
- 3] = '\0';
2071 else if (len
> 4 && name
[len
- 4] == '.')
2072 name
[len
- 4] = '\0';
2075 /* Output a quoted string. */
2078 output_quoted_string (asm_file
, string
)
2084 putc ('\"', asm_file
);
2085 while ((c
= *string
++) != 0)
2087 if (c
== '\"' || c
== '\\')
2088 putc ('\\', asm_file
);
2091 putc ('\"', asm_file
);
2094 /* Output a file name in the form wanted by System V. */
2097 output_file_directive (asm_file
, input_name
)
2101 int len
= strlen (input_name
);
2102 char *na
= input_name
+ len
;
2104 /* NA gets INPUT_NAME sans directory names. */
2105 while (na
> input_name
)
2112 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2113 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
2115 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2116 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
2118 fprintf (asm_file
, "\t.file\t");
2119 output_quoted_string (asm_file
, na
);
2120 fputc ('\n', asm_file
);
2125 /* Routine to build language identifier for object file. */
2128 output_lang_identify (asm_out_file
)
2131 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2132 char *s
= (char *) alloca (len
);
2133 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
2134 ASM_OUTPUT_LABEL (asm_out_file
, s
);
2137 /* Routine to open a dump file. */
2140 open_dump_file (base_name
, suffix
)
2145 char *dumpname
= (char *) alloca (strlen (base_name
) + strlen (suffix
) + 1);
2147 strcpy (dumpname
, base_name
);
2148 strcat (dumpname
, suffix
);
2149 f
= fopen (dumpname
, "w");
2151 pfatal_with_name (dumpname
);
2155 /* Compile an entire file of output from cpp, named NAME.
2156 Write a file of assembly output and various debugging dumps. */
2165 int name_specified
= name
!= 0;
2167 if (dump_base_name
== 0)
2168 dump_base_name
= name
? name
: "gccdump";
2172 integration_time
= 0;
2177 branch_prob_time
= 0;
2182 local_alloc_time
= 0;
2183 global_alloc_time
= 0;
2186 shorten_branch_time
= 0;
2193 /* Open input file. */
2195 if (name
== 0 || !strcmp (name
, "-"))
2201 finput
= fopen (name
, "r");
2203 pfatal_with_name (name
);
2205 #ifdef IO_BUFFER_SIZE
2206 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
2208 #endif /* !USE_CPPLIB */
2210 /* Initialize data in various passes. */
2219 /* Some of these really don't need to be called when generating bytecode,
2220 but the options would have to be parsed first to know that. -bson */
2222 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2223 || debug_info_level
== DINFO_LEVEL_VERBOSE
2224 || flag_test_coverage
);
2226 init_decl_processing ();
2234 if (flag_caller_saves
)
2235 init_caller_save ();
2237 /* If auxiliary info generation is desired, open the output file.
2238 This goes in the same directory as the source file--unlike
2239 all the other output files. */
2240 if (flag_gen_aux_info
)
2242 aux_info_file
= fopen (aux_info_file_name
, "w");
2243 if (aux_info_file
== 0)
2244 pfatal_with_name (aux_info_file_name
);
2247 /* If rtl dump desired, open the output file. */
2249 rtl_dump_file
= open_dump_file (dump_base_name
, ".rtl");
2251 /* If jump_opt dump desired, open the output file. */
2253 jump_opt_dump_file
= open_dump_file (dump_base_name
, ".jump");
2255 /* If cse dump desired, open the output file. */
2257 cse_dump_file
= open_dump_file (dump_base_name
, ".cse");
2259 /* If loop dump desired, open the output file. */
2261 loop_dump_file
= open_dump_file (dump_base_name
, ".loop");
2263 /* If cse2 dump desired, open the output file. */
2265 cse2_dump_file
= open_dump_file (dump_base_name
, ".cse2");
2267 /* If branch_prob dump desired, open the output file. */
2268 if (branch_prob_dump
)
2269 branch_prob_dump_file
= open_dump_file (dump_base_name
, ".bp");
2271 /* If flow dump desired, open the output file. */
2273 flow_dump_file
= open_dump_file (dump_base_name
, ".flow");
2275 /* If combine dump desired, open the output file. */
2277 combine_dump_file
= open_dump_file (dump_base_name
, ".combine");
2279 /* If regmove dump desired, open the output file. */
2281 regmove_dump_file
= open_dump_file (dump_base_name
, ".regmove");
2283 /* If scheduling dump desired, open the output file. */
2285 sched_dump_file
= open_dump_file (dump_base_name
, ".sched");
2287 /* If local_reg dump desired, open the output file. */
2289 local_reg_dump_file
= open_dump_file (dump_base_name
, ".lreg");
2291 /* If global_reg dump desired, open the output file. */
2292 if (global_reg_dump
)
2293 global_reg_dump_file
= open_dump_file (dump_base_name
, ".greg");
2295 /* If 2nd scheduling dump desired, open the output file. */
2297 sched2_dump_file
= open_dump_file (dump_base_name
, ".sched2");
2299 /* If jump2_opt dump desired, open the output file. */
2301 jump2_opt_dump_file
= open_dump_file (dump_base_name
, ".jump2");
2303 /* If dbr_sched dump desired, open the output file. */
2305 dbr_sched_dump_file
= open_dump_file (dump_base_name
, ".dbr");
2309 /* If stack_reg dump desired, open the output file. */
2311 stack_reg_dump_file
= open_dump_file (dump_base_name
, ".stack");
2315 /* Open assembler code output file. */
2317 if (! name_specified
&& asm_file_name
== 0)
2318 asm_out_file
= stdout
;
2321 int len
= strlen (dump_base_name
);
2322 register char *dumpname
= (char *) xmalloc (len
+ 6);
2323 strcpy (dumpname
, dump_base_name
);
2324 strip_off_ending (dumpname
, len
);
2325 strcat (dumpname
, ".s");
2326 if (asm_file_name
== 0)
2328 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
2329 strcpy (asm_file_name
, dumpname
);
2331 if (!strcmp (asm_file_name
, "-"))
2332 asm_out_file
= stdout
;
2334 asm_out_file
= fopen (asm_file_name
, "w");
2335 if (asm_out_file
== 0)
2336 pfatal_with_name (asm_file_name
);
2339 #ifdef IO_BUFFER_SIZE
2340 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
2341 _IOFBF
, IO_BUFFER_SIZE
);
2344 input_filename
= name
;
2346 /* Put an entry on the input file stack for the main input file. */
2348 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
2349 input_file_stack
->next
= 0;
2350 input_file_stack
->name
= input_filename
;
2352 /* Perform language-specific initialization.
2353 This may set main_input_filename. */
2356 /* If the input doesn't start with a #line, use the input name
2357 as the official input file name. */
2358 if (main_input_filename
== 0)
2359 main_input_filename
= name
;
2361 if (!output_bytecode
)
2363 ASM_FILE_START (asm_out_file
);
2365 #ifdef ASM_COMMENT_START
2366 if (flag_verbose_asm
)
2368 /* Print the list of options in effect. */
2369 print_version (asm_out_file
, ASM_COMMENT_START
);
2370 print_switch_values (asm_out_file
, 0, MAX_LINE
,
2371 ASM_COMMENT_START
, " ", "\n");
2372 /* Add a blank line here so it appears in assembler output but not
2374 fprintf (asm_out_file
, "\n");
2379 /* Output something to inform GDB that this compilation was by GCC. Also
2380 serves to tell GDB file consists of bytecodes. */
2381 if (output_bytecode
)
2382 fprintf (asm_out_file
, "bc_gcc2_compiled.:\n");
2385 #ifndef ASM_IDENTIFY_GCC
2386 fprintf (asm_out_file
, "gcc2_compiled.:\n");
2388 ASM_IDENTIFY_GCC (asm_out_file
);
2392 /* Output something to identify which front-end produced this file. */
2393 #ifdef ASM_IDENTIFY_LANGUAGE
2394 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
2397 #ifndef ASM_OUTPUT_SECTION_NAME
2398 if (flag_function_sections
)
2400 warning ("-ffunction-sections not supported for this target.");
2401 flag_function_sections
= 0;
2405 if (flag_function_sections
2406 && (profile_flag
|| profile_block_flag
))
2408 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2409 flag_function_sections
= 0;
2412 if (flag_function_sections
&& write_symbols
!= NO_DEBUG
)
2413 warning ("-ffunction-sections may affect debugging on some targets.");
2415 if (output_bytecode
)
2417 if (profile_flag
|| profile_block_flag
)
2418 error ("profiling not supported in bytecode compilation");
2422 /* ??? Note: There used to be a conditional here
2423 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2424 This was to guarantee separation between gcc_compiled. and
2425 the first function, for the sake of dbx on Suns.
2426 However, having the extra zero here confused the Emacs
2427 code for unexec, and might confuse other programs too.
2428 Therefore, I took out that change.
2429 In future versions we should find another way to solve
2430 that dbx problem. -- rms, 23 May 93. */
2432 /* Don't let the first function fall at the same address
2433 as gcc_compiled., if profiling. */
2434 if (profile_flag
|| profile_block_flag
)
2435 assemble_zeros (UNITS_PER_WORD
);
2438 /* If dbx symbol table desired, initialize writing it
2439 and output the predefined types. */
2440 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2441 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2442 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
2445 #ifdef SDB_DEBUGGING_INFO
2446 if (write_symbols
== SDB_DEBUG
)
2447 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
2450 #ifdef DWARF_DEBUGGING_INFO
2451 if (write_symbols
== DWARF_DEBUG
)
2452 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
2454 #ifdef DWARF2_DEBUGGING_INFO
2455 if (write_symbols
== DWARF2_DEBUG
)
2456 TIMEVAR (symout_time
, dwarf2out_init (asm_out_file
, main_input_filename
));
2459 /* Initialize yet another pass. */
2461 if (!output_bytecode
)
2462 init_final (main_input_filename
);
2463 init_branch_prob (dump_base_name
);
2465 start_time
= get_run_time ();
2467 /* Call the parser, which parses the entire file
2468 (calling rest_of_compilation for each function). */
2470 if (yyparse () != 0)
2472 if (errorcount
== 0)
2473 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
2475 /* In case there were missing closebraces,
2476 get us back to the global binding level. */
2477 while (! global_bindings_p ())
2481 output_func_start_profiler ();
2483 /* Compilation is now finished except for writing
2484 what's left of the symbol table output. */
2486 parse_time
+= get_run_time () - start_time
;
2488 parse_time
-= integration_time
;
2489 parse_time
-= varconst_time
;
2491 globals
= getdecls ();
2493 /* Really define vars that have had only a tentative definition.
2494 Really output inline functions that must actually be callable
2495 and have not been output so far. */
2498 int len
= list_length (globals
);
2499 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
2504 /* Process the decls in reverse order--earliest first.
2505 Put them into VEC from back to front, then take out from front. */
2507 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
2508 vec
[len
- i
- 1] = decl
;
2510 for (i
= 0; i
< len
; i
++)
2514 /* We're not deferring this any longer. */
2515 DECL_DEFER_OUTPUT (decl
) = 0;
2517 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2518 && incomplete_decl_finalize_hook
!= 0)
2519 (*incomplete_decl_finalize_hook
) (decl
);
2522 /* Now emit any global variables or functions that we have been putting
2523 off. We need to loop in case one of the things emitted here
2524 references another one which comes earlier in the list. */
2528 for (i
= 0; i
< len
; i
++)
2532 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
))
2535 /* Don't write out static consts, unless we still need them.
2537 We also keep static consts if not optimizing (for debugging),
2538 unless the user specified -fno-keep-static-consts.
2539 ??? They might be better written into the debug information.
2540 This is possible when using DWARF.
2542 A language processor that wants static constants to be always
2543 written out (even if it is not used) is responsible for
2544 calling rest_of_decl_compilation itself. E.g. the C front-end
2545 calls rest_of_decl_compilation from finish_decl.
2546 One motivation for this is that is conventional in some
2547 environments to write things like:
2548 static const char rcsid[] = "... version string ...";
2549 intending to force the string to be in the executable.
2551 A language processor that would prefer to have unneeded
2552 static constants "optimized away" would just defer writing
2553 them out until here. E.g. C++ does this, because static
2554 constants are often defined in header files.
2556 ??? A tempting alternative (for both C and C++) would be
2557 to force a constant to be written if and only if it is
2558 defined in a main file, as opposed to an include file. */
2560 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2561 && (! TREE_READONLY (decl
)
2562 || TREE_PUBLIC (decl
)
2563 || (!optimize
&& flag_keep_static_consts
)
2564 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2567 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2570 if (TREE_CODE (decl
) == FUNCTION_DECL
2571 && DECL_INITIAL (decl
) != 0
2572 && DECL_SAVED_INSNS (decl
) != 0
2573 && (flag_keep_inline_functions
2574 || TREE_PUBLIC (decl
)
2575 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2578 temporary_allocation ();
2579 output_inline_function (decl
);
2580 permanent_allocation (1);
2585 /* Now that all possible functions have been output, we can dump
2586 the exception table. */
2588 if (exception_table_p ())
2589 output_exception_table ();
2591 for (i
= 0; i
< len
; i
++)
2595 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2596 && ! TREE_ASM_WRITTEN (decl
))
2597 /* Cancel the RTL for this decl so that, if debugging info
2598 output for global variables is still to come,
2599 this one will be omitted. */
2600 DECL_RTL (decl
) = NULL
;
2602 /* Warn about any function
2603 declared static but not defined.
2604 We don't warn about variables,
2605 because many programs have static variables
2606 that exist only to get some text into the object file. */
2607 if (TREE_CODE (decl
) == FUNCTION_DECL
2609 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2610 && DECL_INITIAL (decl
) == 0
2611 && DECL_EXTERNAL (decl
)
2612 && ! DECL_ARTIFICIAL (decl
)
2613 && ! TREE_PUBLIC (decl
))
2615 pedwarn_with_decl (decl
,
2616 "`%s' declared `static' but never defined");
2617 /* This symbol is effectively an "extern" declaration now. */
2618 TREE_PUBLIC (decl
) = 1;
2619 assemble_external (decl
);
2622 /* Warn about static fns or vars defined but not used,
2623 but not about inline functions or static consts
2624 since defining those in header files is normal practice. */
2626 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2627 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2628 && ! DECL_IN_SYSTEM_HEADER (decl
)
2629 && ! DECL_EXTERNAL (decl
)
2630 && ! TREE_PUBLIC (decl
)
2631 && ! TREE_USED (decl
)
2632 && (TREE_CODE (decl
) == FUNCTION_DECL
|| ! DECL_REGISTER (decl
))
2633 /* The TREE_USED bit for file-scope decls
2634 is kept in the identifier, to handle multiple
2635 external decls in different scopes. */
2636 && ! TREE_USED (DECL_NAME (decl
)))
2637 warning_with_decl (decl
, "`%s' defined but not used");
2639 #ifdef SDB_DEBUGGING_INFO
2640 /* The COFF linker can move initialized global vars to the end.
2641 And that can screw up the symbol ordering.
2642 By putting the symbols in that order to begin with,
2643 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2644 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2645 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2646 && ! DECL_EXTERNAL (decl
)
2647 && DECL_RTL (decl
) != 0)
2648 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2650 /* Output COFF information for non-global
2651 file-scope initialized variables. */
2652 if (write_symbols
== SDB_DEBUG
2653 && TREE_CODE (decl
) == VAR_DECL
2654 && DECL_INITIAL (decl
)
2655 && ! DECL_EXTERNAL (decl
)
2656 && DECL_RTL (decl
) != 0
2657 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2658 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2659 #endif /* SDB_DEBUGGING_INFO */
2660 #ifdef DWARF_DEBUGGING_INFO
2661 /* Output DWARF information for file-scope tentative data object
2662 declarations, file-scope (extern) function declarations (which
2663 had no corresponding body) and file-scope tagged type declarations
2664 and definitions which have not yet been forced out. */
2666 if (write_symbols
== DWARF_DEBUG
2667 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2668 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2670 #ifdef DWARF2_DEBUGGING_INFO
2671 /* Output DWARF2 information for file-scope tentative data object
2672 declarations, file-scope (extern) function declarations (which
2673 had no corresponding body) and file-scope tagged type declarations
2674 and definitions which have not yet been forced out. */
2676 if (write_symbols
== DWARF2_DEBUG
2677 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2678 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2683 /* Write out any pending weak symbol declarations. */
2687 /* Do dbx symbols */
2688 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2689 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2690 TIMEVAR (symout_time
,
2692 dbxout_finish (asm_out_file
, main_input_filename
);
2696 #ifdef DWARF_DEBUGGING_INFO
2697 if (write_symbols
== DWARF_DEBUG
)
2698 TIMEVAR (symout_time
,
2704 #ifdef DWARF2_DEBUGGING_INFO
2705 if (write_symbols
== DWARF2_DEBUG
)
2706 TIMEVAR (symout_time
,
2708 dwarf2out_finish ();
2712 /* Output some stuff at end of file if nec. */
2714 if (!output_bytecode
)
2716 end_final (dump_base_name
);
2717 end_branch_prob (branch_prob_dump_file
);
2720 ASM_FILE_END (asm_out_file
);
2724 /* Language-specific end of compilation actions. */
2728 if (output_bytecode
)
2729 bc_write_file (asm_out_file
);
2731 /* Close the dump files. */
2733 if (flag_gen_aux_info
)
2735 fclose (aux_info_file
);
2737 unlink (aux_info_file_name
);
2741 fclose (rtl_dump_file
);
2744 fclose (jump_opt_dump_file
);
2747 fclose (cse_dump_file
);
2750 fclose (loop_dump_file
);
2753 fclose (cse2_dump_file
);
2755 if (branch_prob_dump
)
2756 fclose (branch_prob_dump_file
);
2759 fclose (flow_dump_file
);
2763 dump_combine_total_stats (combine_dump_file
);
2764 fclose (combine_dump_file
);
2768 fclose (regmove_dump_file
);
2771 fclose (sched_dump_file
);
2774 fclose (local_reg_dump_file
);
2776 if (global_reg_dump
)
2777 fclose (global_reg_dump_file
);
2780 fclose (sched2_dump_file
);
2783 fclose (jump2_opt_dump_file
);
2786 fclose (dbr_sched_dump_file
);
2790 fclose (stack_reg_dump_file
);
2793 /* Close non-debugging input and output files. Take special care to note
2794 whether fclose returns an error, since the pages might still be on the
2795 buffer chain while the file is open. */
2802 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
2803 fatal_io_error (asm_file_name
);
2805 /* Print the times. */
2809 fprintf (stderr
,"\n");
2810 print_time ("parse", parse_time
);
2812 if (!output_bytecode
)
2814 print_time ("integration", integration_time
);
2815 print_time ("jump", jump_time
);
2816 print_time ("cse", cse_time
);
2817 print_time ("loop", loop_time
);
2818 print_time ("cse2", cse2_time
);
2819 print_time ("branch-prob", branch_prob_time
);
2820 print_time ("flow", flow_time
);
2821 print_time ("combine", combine_time
);
2822 print_time ("regmove", regmove_time
);
2823 print_time ("sched", sched_time
);
2824 print_time ("local-alloc", local_alloc_time
);
2825 print_time ("global-alloc", global_alloc_time
);
2826 print_time ("sched2", sched2_time
);
2827 print_time ("dbranch", dbr_sched_time
);
2828 print_time ("shorten-branch", shorten_branch_time
);
2829 print_time ("stack-reg", stack_reg_time
);
2830 print_time ("final", final_time
);
2831 print_time ("varconst", varconst_time
);
2832 print_time ("symout", symout_time
);
2833 print_time ("dump", dump_time
);
2838 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2839 and TYPE_DECL nodes.
2841 This does nothing for local (non-static) variables.
2842 Otherwise, it sets up the RTL and outputs any assembler code
2843 (label definition, storage allocation and initialization).
2845 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2846 the assembler symbol name to be used. TOP_LEVEL is nonzero
2847 if this declaration is not within a function. */
2850 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
2856 /* Declarations of variables, and of functions defined elsewhere. */
2858 /* The most obvious approach, to put an #ifndef around where
2859 this macro is used, doesn't work since it's inside a macro call. */
2860 #ifndef ASM_FINISH_DECLARE_OBJECT
2861 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2864 /* Forward declarations for nested functions are not "external",
2865 but we need to treat them as if they were. */
2866 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
2867 || TREE_CODE (decl
) == FUNCTION_DECL
)
2868 TIMEVAR (varconst_time
,
2870 make_decl_rtl (decl
, asmspec
, top_level
);
2871 /* Initialized extern variable exists to be replaced
2872 with its value, or represents something that will be
2873 output in another file. */
2874 if (! (TREE_CODE (decl
) == VAR_DECL
2875 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
2876 && DECL_INITIAL (decl
) != 0
2877 && DECL_INITIAL (decl
) != error_mark_node
))
2878 /* Don't output anything
2879 when a tentative file-scope definition is seen.
2880 But at end of compilation, do output code for them. */
2881 if (! (! at_end
&& top_level
2882 && (DECL_INITIAL (decl
) == 0
2883 || DECL_INITIAL (decl
) == error_mark_node
)))
2884 assemble_variable (decl
, top_level
, at_end
, 0);
2885 if (!output_bytecode
2886 && decl
== last_assemble_variable_decl
)
2888 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
2892 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
2894 if (decode_reg_name (asmspec
) >= 0)
2896 DECL_RTL (decl
) = 0;
2897 make_decl_rtl (decl
, asmspec
, top_level
);
2900 error ("invalid register name `%s' for register variable", asmspec
);
2902 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2903 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2904 && TREE_CODE (decl
) == TYPE_DECL
)
2905 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
2907 #ifdef SDB_DEBUGGING_INFO
2908 else if (write_symbols
== SDB_DEBUG
&& top_level
2909 && TREE_CODE (decl
) == TYPE_DECL
)
2910 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2914 /* Called after finishing a record, union or enumeral type. */
2917 rest_of_type_compilation (type
, toplev
)
2921 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2922 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2923 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2925 #ifdef SDB_DEBUGGING_INFO
2926 if (write_symbols
== SDB_DEBUG
)
2927 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
2931 /* This is called from finish_function (within yyparse)
2932 after each top-level definition is parsed.
2933 It is supposed to compile that function or variable
2934 and output the assembler code for it.
2935 After we return, the tree storage is freed. */
2938 rest_of_compilation (decl
)
2942 int start_time
= get_run_time ();
2944 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2945 to be restored after we finish compiling the function
2946 (for use when compiling inline calls to this function). */
2947 tree saved_block_tree
= 0;
2948 /* Likewise, for DECL_ARGUMENTS. */
2949 tree saved_arguments
= 0;
2952 if (output_bytecode
)
2955 /* If we are reconsidering an inline function
2956 at the end of compilation, skip the stuff for making it inline. */
2958 if (DECL_SAVED_INSNS (decl
) == 0)
2963 /* If requested, consider whether to make this function inline. */
2964 if (DECL_INLINE (decl
) || flag_inline_functions
)
2965 TIMEVAR (integration_time
,
2967 lose
= function_cannot_inline_p (decl
);
2968 if (lose
|| ! optimize
)
2970 if (warn_inline
&& DECL_INLINE (decl
))
2971 warning_with_decl (decl
, lose
);
2972 DECL_ABSTRACT_ORIGIN (decl
) = 0;
2973 /* Don't really compile an extern inline function.
2974 If we can't make it inline, pretend
2975 it was only declared. */
2976 if (DECL_EXTERNAL (decl
))
2978 DECL_INITIAL (decl
) = 0;
2979 goto exit_rest_of_compilation
;
2983 /* ??? Note that this has the effect of making it look
2984 like "inline" was specified for a function if we choose
2985 to inline it. This isn't quite right, but it's
2986 probably not worth the trouble to fix. */
2987 inlineable
= DECL_INLINE (decl
) = 1;
2990 insns
= get_insns ();
2992 /* Dump the rtl code if we are dumping rtl. */
2997 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
2998 (*decl_printable_name
) (decl
, 2));
2999 if (DECL_SAVED_INSNS (decl
))
3000 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
3001 print_rtl (rtl_dump_file
, insns
);
3002 fflush (rtl_dump_file
);
3005 /* If function is inline, and we don't yet know whether to
3006 compile it by itself, defer decision till end of compilation.
3007 finish_compilation will call rest_of_compilation again
3008 for those functions that need to be output. Also defer those
3009 functions that we are supposed to defer. We cannot defer
3010 functions containing nested functions since the nested function
3011 data is in our non-saved obstack. */
3013 if (! current_function_contains_functions
3014 && (DECL_DEFER_OUTPUT (decl
)
3015 || (DECL_INLINE (decl
)
3016 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
3017 && ! flag_keep_inline_functions
)
3018 || DECL_EXTERNAL (decl
)))))
3020 DECL_DEFER_OUTPUT (decl
) = 1;
3022 /* If -Wreturn-type, we have to do a bit of compilation. */
3023 if (! warn_return_type
)
3025 #ifdef DWARF_DEBUGGING_INFO
3026 /* Generate the DWARF info for the "abstract" instance
3027 of a function which we may later generate inlined and/or
3028 out-of-line instances of. */
3029 if (write_symbols
== DWARF_DEBUG
)
3031 set_decl_abstract_flags (decl
, 1);
3032 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3033 set_decl_abstract_flags (decl
, 0);
3036 #ifdef DWARF2_DEBUGGING_INFO
3037 /* Generate the DWARF2 info for the "abstract" instance
3038 of a function which we may later generate inlined and/or
3039 out-of-line instances of. */
3040 if (write_symbols
== DWARF2_DEBUG
)
3042 set_decl_abstract_flags (decl
, 1);
3043 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3044 set_decl_abstract_flags (decl
, 0);
3047 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
3048 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
3049 goto exit_rest_of_compilation
;
3053 /* If we have to compile the function now, save its rtl and subdecls
3054 so that its compilation will not affect what others get. */
3055 if (inlineable
|| DECL_DEFER_OUTPUT (decl
))
3057 #ifdef DWARF_DEBUGGING_INFO
3058 /* Generate the DWARF info for the "abstract" instance of
3059 a function which we will generate an out-of-line instance
3060 of almost immediately (and which we may also later generate
3061 various inlined instances of). */
3062 if (write_symbols
== DWARF_DEBUG
)
3064 set_decl_abstract_flags (decl
, 1);
3065 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3066 set_decl_abstract_flags (decl
, 0);
3069 #ifdef DWARF2_DEBUGGING_INFO
3070 /* Generate the DWARF2 info for the "abstract" instance of
3071 a function which we will generate an out-of-line instance
3072 of almost immediately (and which we may also later generate
3073 various inlined instances of). */
3074 if (write_symbols
== DWARF2_DEBUG
)
3076 set_decl_abstract_flags (decl
, 1);
3077 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3078 set_decl_abstract_flags (decl
, 0);
3081 saved_block_tree
= DECL_INITIAL (decl
);
3082 saved_arguments
= DECL_ARGUMENTS (decl
);
3083 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
3084 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlineable
;
3087 /* If specified extern inline but we aren't inlining it, we are
3089 if (DECL_INLINE (decl
) && DECL_EXTERNAL (decl
))
3090 goto exit_rest_of_compilation
;
3093 if (! DECL_DEFER_OUTPUT (decl
))
3094 TREE_ASM_WRITTEN (decl
) = 1;
3096 /* Now that integrate will no longer see our rtl, we need not distinguish
3097 between the return value of this function and the return value of called
3099 rtx_equal_function_value_matters
= 0;
3101 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3102 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
3104 goto exit_rest_of_compilation
;
3107 /* Add an unwinder for exception handling, if needed.
3108 This must be done before we finalize PIC code. */
3112 /* If we are doing position-independent code generation, now
3113 is the time to output special prologues and epilogues.
3114 We do not want to do this earlier, because it just clutters
3115 up inline functions with meaningless insns. */
3120 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3121 Note that that may have been done above, in save_for_inline_copying.
3122 The call to resume_temporary_allocation near the end of this function
3123 goes back to the usual state of affairs. This must be done after
3124 we've built up any unwinders for exception handling, and done
3125 the FINALIZE_PIC work, if necessary. */
3127 rtl_in_current_obstack ();
3129 insns
= get_insns ();
3131 /* Copy any shared structure that should not be shared. */
3133 unshare_all_rtl (insns
);
3135 /* Instantiate all virtual registers. */
3137 instantiate_virtual_regs (current_function_decl
, get_insns ());
3139 /* See if we have allocated stack slots that are not directly addressable.
3140 If so, scan all the insns and create explicit address computation
3141 for all references to such slots. */
3142 /* fixup_stack_slots (); */
3144 /* Find all the EH handlers. */
3145 find_exception_handler_labels ();
3147 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3148 are initialized and to compute whether control can drop off the end
3150 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3151 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3153 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3154 if (rtl_dump_and_exit
|| flag_syntax_only
|| DECL_DEFER_OUTPUT (decl
))
3155 goto exit_rest_of_compilation
;
3157 /* Dump rtl code after jump, if we are doing that. */
3162 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
3163 (*decl_printable_name
) (decl
, 2));
3164 print_rtl (jump_opt_dump_file
, insns
);
3165 fflush (jump_opt_dump_file
);
3168 /* Perform common subexpression elimination.
3169 Nonzero value from `cse_main' means that jumps were simplified
3170 and some code may now be unreachable, so do
3171 jump optimization again. */
3176 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
3177 (*decl_printable_name
) (decl
, 2));
3182 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
3184 if (flag_thread_jumps
)
3185 /* Hacks by tiemann & kenner. */
3186 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
3188 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
3190 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
3192 if (tem
|| optimize
> 1)
3193 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3196 /* Dump rtl code after cse, if we are doing that. */
3201 print_rtl (cse_dump_file
, insns
);
3202 fflush (cse_dump_file
);
3208 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
3209 (*decl_printable_name
) (decl
, 2));
3212 /* Move constant computations out of loops. */
3218 loop_optimize (insns
, loop_dump_file
);
3222 /* Dump rtl code after loop opt, if we are doing that. */
3227 print_rtl (loop_dump_file
, insns
);
3228 fflush (loop_dump_file
);
3234 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
3235 (*decl_printable_name
) (decl
, 2));
3238 if (optimize
> 0 && flag_rerun_cse_after_loop
)
3240 /* Running another jump optimization pass before the second
3241 cse pass sometimes simplifies the RTL enough to allow
3242 the second CSE pass to do a better job. Jump_optimize can change
3243 max_reg_num so we must rerun reg_scan afterwards.
3244 ??? Rework to not call reg_scan so often. */
3245 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3246 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3248 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
3249 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
3250 1, cse2_dump_file
));
3252 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3255 if (optimize
> 0 && flag_thread_jumps
)
3257 /* This pass of jump threading straightens out code
3258 that was kinked by loop optimization. */
3259 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3260 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
3262 /* Dump rtl code after cse, if we are doing that. */
3267 print_rtl (cse2_dump_file
, insns
);
3268 fflush (cse2_dump_file
);
3271 if (branch_prob_dump
)
3274 fprintf (branch_prob_dump_file
, "\n;; Function %s\n\n",
3275 (*decl_printable_name
) (decl
, 2));
3278 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
3279 TIMEVAR (branch_prob_time
,
3281 branch_prob (insns
, branch_prob_dump_file
);
3284 if (branch_prob_dump
)
3287 print_rtl (branch_prob_dump_file
, insns
);
3288 fflush (branch_prob_dump_file
);
3290 /* We are no longer anticipating cse in this function, at least. */
3292 cse_not_expected
= 1;
3294 /* Now we choose between stupid (pcc-like) register allocation
3295 (if we got the -noreg switch and not -opt)
3296 and smart register allocation. */
3298 if (optimize
> 0) /* Stupid allocation probably won't work */
3299 obey_regdecls
= 0; /* if optimizations being done. */
3303 /* Print function header into flow dump now
3304 because doing the flow analysis makes some of the dump. */
3309 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
3310 (*decl_printable_name
) (decl
, 2));
3317 regclass (insns
, max_reg_num ());
3318 stupid_life_analysis (insns
, max_reg_num (),
3324 /* Do control and data flow analysis,
3325 and write some of the results to dump file. */
3327 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
3329 if (warn_uninitialized
)
3331 uninitialized_vars_warning (DECL_INITIAL (decl
));
3332 setjmp_args_warning ();
3336 /* Dump rtl after flow analysis. */
3341 print_rtl (flow_dump_file
, insns
);
3342 fflush (flow_dump_file
);
3345 /* If -opt, try combining insns through substitution. */
3348 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
3350 /* Dump rtl code after insn combination. */
3355 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
3356 (*decl_printable_name
) (decl
, 2));
3357 dump_combine_stats (combine_dump_file
);
3358 print_rtl (combine_dump_file
, insns
);
3359 fflush (combine_dump_file
);
3365 fprintf (regmove_dump_file
, "\n;; Function %s\n\n",
3366 (*decl_printable_name
) (decl
, 2));
3369 /* Register allocation pre-pass, to reduce number of moves
3370 necessary for two-address machines. */
3371 if (optimize
> 0 && flag_regmove
)
3372 TIMEVAR (regmove_time
, regmove_optimize (insns
, max_reg_num (),
3373 regmove_dump_file
));
3378 print_rtl (regmove_dump_file
, insns
);
3379 fflush (regmove_dump_file
);
3382 /* Print function header into sched dump now
3383 because doing the sched analysis makes some of the dump. */
3388 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
3389 (*decl_printable_name
) (decl
, 2));
3392 if (optimize
> 0 && flag_schedule_insns
)
3394 /* Do control and data sched analysis,
3395 and write some of the results to dump file. */
3397 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
3400 /* Dump rtl after instruction scheduling. */
3405 print_rtl (sched_dump_file
, insns
);
3406 fflush (sched_dump_file
);
3409 /* Unless we did stupid register allocation,
3410 allocate pseudo-regs that are used only within 1 basic block. */
3413 TIMEVAR (local_alloc_time
,
3415 regclass (insns
, max_reg_num ());
3419 /* Dump rtl code after allocating regs within basic blocks. */
3424 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
3425 (*decl_printable_name
) (decl
, 2));
3426 dump_flow_info (local_reg_dump_file
);
3427 dump_local_alloc (local_reg_dump_file
);
3428 print_rtl (local_reg_dump_file
, insns
);
3429 fflush (local_reg_dump_file
);
3432 if (global_reg_dump
)
3434 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
3435 (*decl_printable_name
) (decl
, 2)));
3437 /* Save the last label number used so far, so reorg can tell
3438 when it's safe to kill spill regs. */
3439 max_label_num_after_reload
= max_label_num ();
3441 /* Unless we did stupid register allocation,
3442 allocate remaining pseudo-regs, then do the reload pass
3443 fixing up any insns that are invalid. */
3445 TIMEVAR (global_alloc_time
,
3448 failure
= global_alloc (global_reg_dump_file
);
3450 failure
= reload (insns
, 0, global_reg_dump_file
);
3453 if (global_reg_dump
)
3456 dump_global_regs (global_reg_dump_file
);
3457 print_rtl (global_reg_dump_file
, insns
);
3458 fflush (global_reg_dump_file
);
3462 goto exit_rest_of_compilation
;
3464 reload_completed
= 1;
3466 /* Do a very simple CSE pass over just the hard registers. */
3468 reload_cse_regs (insns
);
3470 /* On some machines, the prologue and epilogue code, or parts thereof,
3471 can be represented as RTL. Doing so lets us schedule insns between
3472 it and the rest of the code and also allows delayed branch
3473 scheduling to operate in the epilogue. */
3475 thread_prologue_and_epilogue_insns (insns
);
3477 if (optimize
> 0 && flag_schedule_insns_after_reload
)
3482 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
3483 (*decl_printable_name
) (decl
, 2));
3486 /* Do control and data sched analysis again,
3487 and write some more of the results to dump file. */
3489 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
3491 /* Dump rtl after post-reorder instruction scheduling. */
3496 print_rtl (sched2_dump_file
, insns
);
3497 fflush (sched2_dump_file
);
3501 #ifdef LEAF_REGISTERS
3503 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
3507 /* One more attempt to remove jumps to .+1
3508 left by dead-store-elimination.
3509 Also do cross-jumping this time
3510 and delete no-op move insns. */
3514 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
3517 /* Dump rtl code after jump, if we are doing that. */
3522 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
3523 (*decl_printable_name
) (decl
, 2));
3524 print_rtl (jump2_opt_dump_file
, insns
);
3525 fflush (jump2_opt_dump_file
);
3528 /* If a machine dependent reorganization is needed, call it. */
3529 #ifdef MACHINE_DEPENDENT_REORG
3530 MACHINE_DEPENDENT_REORG (insns
);
3533 /* If a scheduling pass for delayed branches is to be done,
3534 call the scheduling code. */
3537 if (optimize
> 0 && flag_delayed_branch
)
3539 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
3544 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
3545 (*decl_printable_name
) (decl
, 2));
3546 print_rtl (dbr_sched_dump_file
, insns
);
3547 fflush (dbr_sched_dump_file
);
3553 /* Shorten branches. */
3554 TIMEVAR (shorten_branch_time
,
3556 shorten_branches (get_insns ());
3560 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
3565 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
3566 (*decl_printable_name
) (decl
, 2));
3567 print_rtl (stack_reg_dump_file
, insns
);
3568 fflush (stack_reg_dump_file
);
3573 /* Now turn the rtl into assembler code. */
3575 TIMEVAR (final_time
,
3580 /* Get the function's name, as described by its RTL.
3581 This may be different from the DECL_NAME name used
3582 in the source file. */
3584 x
= DECL_RTL (decl
);
3585 if (GET_CODE (x
) != MEM
)
3588 if (GET_CODE (x
) != SYMBOL_REF
)
3590 fnname
= XSTR (x
, 0);
3592 assemble_start_function (decl
, fnname
);
3593 final_start_function (insns
, asm_out_file
, optimize
);
3594 final (insns
, asm_out_file
, optimize
, 0);
3595 final_end_function (insns
, asm_out_file
, optimize
);
3596 assemble_end_function (decl
, fnname
);
3597 fflush (asm_out_file
);
3599 /* Release all memory held by regsets now */
3600 regset_release_memory ();
3603 /* Write DBX symbols if requested */
3605 /* Note that for those inline functions where we don't initially
3606 know for certain that we will be generating an out-of-line copy,
3607 the first invocation of this routine (rest_of_compilation) will
3608 skip over this code by doing a `goto exit_rest_of_compilation;'.
3609 Later on, finish_compilation will call rest_of_compilation again
3610 for those inline functions that need to have out-of-line copies
3611 generated. During that call, we *will* be routed past here. */
3613 #ifdef DBX_DEBUGGING_INFO
3614 if (write_symbols
== DBX_DEBUG
)
3615 TIMEVAR (symout_time
, dbxout_function (decl
));
3618 #ifdef DWARF_DEBUGGING_INFO
3619 if (write_symbols
== DWARF_DEBUG
)
3620 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3623 #ifdef DWARF2_DEBUGGING_INFO
3624 if (write_symbols
== DWARF2_DEBUG
)
3625 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3628 exit_rest_of_compilation
:
3630 /* In case the function was not output,
3631 don't leave any temporary anonymous types
3632 queued up for sdb output. */
3633 #ifdef SDB_DEBUGGING_INFO
3634 if (write_symbols
== SDB_DEBUG
)
3635 sdbout_types (NULL_TREE
);
3638 /* Put back the tree of subblocks and list of arguments
3639 from before we copied them.
3640 Code generation and the output of debugging info may have modified
3641 the copy, but the original is unchanged. */
3643 if (saved_block_tree
!= 0)
3645 DECL_INITIAL (decl
) = saved_block_tree
;
3646 DECL_ARGUMENTS (decl
) = saved_arguments
;
3647 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
3650 reload_completed
= 0;
3652 /* Clear out the insn_length contents now that they are no longer valid. */
3653 init_insn_lengths ();
3655 /* Clear out the real_constant_chain before some of the rtx's
3656 it runs through become garbage. */
3658 clear_const_double_mem ();
3660 /* Cancel the effect of rtl_in_current_obstack. */
3662 resume_temporary_allocation ();
3664 /* Show no temporary slots allocated. */
3668 /* The parsing time is all the time spent in yyparse
3669 *except* what is spent in this function. */
3671 parse_time
-= get_run_time () - start_time
;
3674 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3675 Exit code is 35 if can't open files, 34 if fatal error,
3676 33 if had nonfatal errors, else success. */
3679 main (argc
, argv
, envp
)
3686 int flag_print_mem
= 0;
3687 int version_flag
= 0;
3690 /* save in case md file wants to emit args as a comment. */
3694 p
= argv
[0] + strlen (argv
[0]);
3695 while (p
!= argv
[0] && p
[-1] != '/'
3696 #ifdef DIR_SEPARATOR
3697 && p
[-1] != DIR_SEPARATOR
3704 /* Get rid of any avoidable limit on stack size. */
3708 /* Set the stack limit huge so that alloca does not fail. */
3709 getrlimit (RLIMIT_STACK
, &rlim
);
3710 rlim
.rlim_cur
= rlim
.rlim_max
;
3711 setrlimit (RLIMIT_STACK
, &rlim
);
3713 #endif /* RLIMIT_STACK */
3715 signal (SIGFPE
, float_signal
);
3718 signal (SIGPIPE
, pipe_closed
);
3721 decl_printable_name
= decl_name
;
3722 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
3724 /* Initialize whether `char' is signed. */
3725 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
3726 #ifdef DEFAULT_SHORT_ENUMS
3727 /* Initialize how much space enums occupy, by default. */
3728 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
3731 /* Scan to see what optimization level has been specified. That will
3732 determine the default value of many flags. */
3733 for (i
= 1; i
< argc
; i
++)
3735 if (!strcmp (argv
[i
], "-O"))
3739 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
3741 /* Handle -O2, -O3, -O69, ... */
3742 char *p
= &argv
[i
][2];
3746 if (! (c
>= '0' && c
<= '9'))
3749 optimize
= atoi (&argv
[i
][2]);
3753 obey_regdecls
= (optimize
== 0);
3758 flag_thread_jumps
= 1;
3760 flag_delayed_branch
= 1;
3762 #ifdef CAN_DEBUG_WITHOUT_FP
3763 flag_omit_frame_pointer
= 1;
3765 flag_alias_check
= 1;
3770 flag_cse_follow_jumps
= 1;
3771 flag_cse_skip_blocks
= 1;
3772 flag_expensive_optimizations
= 1;
3773 flag_strength_reduce
= 1;
3774 flag_rerun_cse_after_loop
= 1;
3775 flag_caller_saves
= 1;
3777 #ifdef INSN_SCHEDULING
3778 flag_schedule_insns
= 1;
3779 flag_schedule_insns_after_reload
= 1;
3786 flag_inline_functions
= 1;
3789 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3792 set_target_switch ("");
3794 #ifdef OPTIMIZATION_OPTIONS
3795 /* Allow default optimizations to be specified on a per-machine basis. */
3796 OPTIMIZATION_OPTIONS (optimize
);
3799 /* Initialize register usage now so switches may override. */
3802 for (i
= 1; i
< argc
; i
++)
3805 /* If this is a language-specific option,
3806 decode it in a language-specific way. */
3807 for (j
= 0; lang_options
[j
] != 0; j
++)
3808 if (!strncmp (argv
[i
], lang_options
[j
],
3809 strlen (lang_options
[j
])))
3811 if (lang_options
[j
] != 0)
3812 /* If the option is valid for *some* language,
3813 treat it as valid even if this language doesn't understand it. */
3814 lang_decode_option (argv
[i
]);
3815 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
3817 register char *str
= argv
[i
] + 1;
3822 set_target_switch (&str
[1]);
3823 else if (!strcmp (str
, "dumpbase"))
3825 dump_base_name
= argv
[++i
];
3827 else if (str
[0] == 'd')
3829 register char *p
= &str
[1];
3834 branch_prob_dump
= 1;
3838 global_reg_dump
= 1;
3845 cse_dump
= 1, cse2_dump
= 1;
3851 branch_prob_dump
= 1;
3866 global_reg_dump
= 1;
3884 flag_print_asm_name
= 1;
3908 rtl_dump_and_exit
= 1;
3915 else if (str
[0] == 'f')
3917 register char *p
= &str
[1];
3920 /* Some kind of -f option.
3921 P's value is the option sans `-f'.
3922 Search for it in the table of options. */
3925 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
3928 if (!strcmp (p
, f_options
[j
].string
))
3930 *f_options
[j
].variable
= f_options
[j
].on_value
;
3931 /* A goto here would be cleaner,
3932 but breaks the vax pcc. */
3935 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
3936 && ! strcmp (p
+3, f_options
[j
].string
))
3938 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
3946 #ifdef INSN_SCHEDULING
3947 else if (!strncmp (p
, "sched-verbose-",14))
3948 fix_sched_param("verbose",&p
[14]);
3949 else if (!strncmp (p
, "sched-max-",10))
3950 fix_sched_param("max",&p
[10]);
3951 else if (!strncmp (p
, "sched-inter-max-b-",18))
3952 fix_sched_param("interblock-max-blocks",&p
[18]);
3953 else if (!strncmp (p
, "sched-inter-max-i-",18))
3954 fix_sched_param("interblock-max-insns",&p
[18]);
3957 else if (!strncmp (p
, "fixed-", 6))
3958 fix_register (&p
[6], 1, 1);
3959 else if (!strncmp (p
, "call-used-", 10))
3960 fix_register (&p
[10], 0, 1);
3961 else if (!strncmp (p
, "call-saved-", 11))
3962 fix_register (&p
[11], 0, 0);
3964 error ("Invalid option `%s'", argv
[i
]);
3966 else if (str
[0] == 'O')
3968 register char *p
= str
+1;
3969 while (*p
&& *p
>= '0' && *p
<= '9')
3974 error ("Invalid option `%s'", argv
[i
]);
3976 else if (!strcmp (str
, "pedantic"))
3978 else if (!strcmp (str
, "pedantic-errors"))
3979 flag_pedantic_errors
= pedantic
= 1;
3980 else if (!strcmp (str
, "quiet"))
3982 else if (!strcmp (str
, "version"))
3984 else if (!strcmp (str
, "w"))
3985 inhibit_warnings
= 1;
3986 else if (!strcmp (str
, "W"))
3989 /* We save the value of warn_uninitialized, since if they put
3990 -Wuninitialized on the command line, we need to generate a
3991 warning about not using it without also specifying -O. */
3992 if (warn_uninitialized
!= 1)
3993 warn_uninitialized
= 2;
3995 else if (str
[0] == 'W')
3997 register char *p
= &str
[1];
4000 /* Some kind of -W option.
4001 P's value is the option sans `-W'.
4002 Search for it in the table of options. */
4005 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
4008 if (!strcmp (p
, W_options
[j
].string
))
4010 *W_options
[j
].variable
= W_options
[j
].on_value
;
4011 /* A goto here would be cleaner,
4012 but breaks the vax pcc. */
4015 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
4016 && ! strcmp (p
+3, W_options
[j
].string
))
4018 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
4025 else if (!strncmp (p
, "id-clash-", 9))
4031 if (*endp
>= '0' && *endp
<= '9')
4035 error ("Invalid option `%s'", argv
[i
]);
4040 id_clash_len
= atoi (str
+ 10);
4043 else if (!strncmp (p
, "larger-than-", 12))
4045 char *endp
= p
+ 12;
4049 if (*endp
>= '0' && *endp
<= '9')
4053 error ("Invalid option `%s'", argv
[i
]);
4054 goto larger_than_lose
;
4057 warn_larger_than
= 1;
4058 larger_than_size
= atoi (str
+ 13);
4062 error ("Invalid option `%s'", argv
[i
]);
4064 else if (!strcmp (str
, "p"))
4068 else if (!strcmp (str
, "a"))
4070 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
4071 warning ("`-a' option (basic block profile) not supported");
4073 profile_block_flag
= (profile_block_flag
< 2) ? 1 : 3;
4076 else if (!strcmp (str
, "ax"))
4078 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
4079 warning ("`-ax' option (jump profiling) not supported");
4081 profile_block_flag
= (!profile_block_flag
4082 || profile_block_flag
== 2) ? 2 : 3;
4085 else if (str
[0] == 'g')
4089 /* A lot of code assumes write_symbols == NO_DEBUG if the
4090 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
4091 of what debugging type has been selected). This records the
4092 selected type. It is an error to specify more than one
4094 static enum debug_info_type selected_debug_type
= NO_DEBUG
;
4095 /* Non-zero if debugging format has been explicitly set.
4096 -g and -ggdb don't explicitly set the debugging format so
4097 -gdwarf -g3 is equivalent to -gdwarf3. */
4098 static int type_explicitly_set_p
= 0;
4099 /* Table of supported debugging formats. */
4102 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
4103 constant expression, we use NO_DEBUG in its place. */
4104 enum debug_info_type debug_type
;
4105 int use_extensions_p
;
4106 } *da
, debug_args
[] = {
4107 { "g", NO_DEBUG
, DEFAULT_GDB_EXTENSIONS
},
4108 { "ggdb", NO_DEBUG
, 1 },
4109 #ifdef DBX_DEBUGGING_INFO
4110 { "gstabs", DBX_DEBUG
, 0 },
4111 { "gstabs+", DBX_DEBUG
, 1 },
4113 #ifdef DWARF_DEBUGGING_INFO
4114 { "gdwarf", DWARF_DEBUG
, 0 },
4115 { "gdwarf+", DWARF_DEBUG
, 1 },
4117 #ifdef DWARF2_DEBUGGING_INFO
4118 { "gdwarf-2", DWARF2_DEBUG
, 0 },
4120 #ifdef XCOFF_DEBUGGING_INFO
4121 { "gxcoff", XCOFF_DEBUG
, 0 },
4122 { "gxcoff+", XCOFF_DEBUG
, 1 },
4124 #ifdef SDB_DEBUGGING_INFO
4125 { "gcoff", SDB_DEBUG
, 0 },
4129 /* Indexed by enum debug_info_type. */
4130 static char *debug_type_names
[] = {
4131 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
4134 /* Look up STR in the table. */
4135 for (da
= debug_args
; da
->arg
; da
++)
4137 if (! strncmp (str
, da
->arg
, strlen (da
->arg
)))
4139 enum debug_info_type type
= da
->debug_type
;
4142 p
= str
+ strlen (da
->arg
);
4143 if (*p
&& (*p
< '0' || *p
> '9'))
4147 while (*q
&& (*q
>= '0' && *q
<= '9'))
4152 level
= 2; /* default debugging info level */
4153 if (*q
|| level
> 3)
4155 warning ("invalid debug level specification in option: `-%s'",
4157 /* ??? This error message is incorrect in the case of
4159 warning ("no debugging information will be generated");
4163 if (type
== NO_DEBUG
)
4165 type
= PREFERRED_DEBUGGING_TYPE
;
4166 if (len
> 1 && strncmp (str
, "ggdb", len
) == 0)
4168 #ifdef DWARF2_DEBUGGING_INFO
4169 type
= DWARF2_DEBUG
;
4170 #elif defined DBX_DEBUGGING_INFO
4176 if (type
== NO_DEBUG
)
4177 warning ("`-%s' not supported by this configuration of GCC",
4180 /* Does it conflict with an already selected type? */
4181 if (type_explicitly_set_p
4182 /* -g/-ggdb don't conflict with anything */
4183 && da
->debug_type
!= NO_DEBUG
4184 && type
!= selected_debug_type
)
4185 warning ("`-%s' ignored, conflicts with `-g%s'",
4186 str
, debug_type_names
[(int) selected_debug_type
]);
4189 /* If the format has already been set, -g/-ggdb
4190 only change the debug level. */
4191 if (type_explicitly_set_p
4192 && da
->debug_type
== NO_DEBUG
)
4193 ; /* don't change debugging type */
4196 selected_debug_type
= type
;
4197 type_explicitly_set_p
= da
->debug_type
!= NO_DEBUG
;
4199 write_symbols
= (level
== 0
4201 : selected_debug_type
);
4202 use_gnu_debug_info_extensions
= da
->use_extensions_p
;
4203 debug_info_level
= (enum debug_info_level
) level
;
4209 warning ("`-%s' not supported by this configuration of GCC",
4212 else if (!strcmp (str
, "o"))
4214 asm_file_name
= argv
[++i
];
4216 else if (str
[0] == 'G')
4218 g_switch_set
= TRUE
;
4219 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
4221 else if (!strncmp (str
, "aux-info", 8))
4223 flag_gen_aux_info
= 1;
4224 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
4227 error ("Invalid option `%s'", argv
[i
]);
4229 else if (argv
[i
][0] == '+')
4230 error ("Invalid option `%s'", argv
[i
]);
4235 /* Checker uses the frame pointer. */
4236 if (flag_check_memory_usage
)
4237 flag_omit_frame_pointer
= 0;
4239 /* Initialize for bytecode output. A good idea to do this as soon as
4240 possible after the "-f" options have been parsed. */
4241 if (output_bytecode
)
4243 #ifndef TARGET_SUPPORTS_BYTECODE
4244 /* Just die with a fatal error if not supported */
4245 fatal ("-fbytecode not supported for this target");
4253 /* Inlining does not work if not optimizing,
4254 so force it not to be done. */
4258 /* The c_decode_option and lang_decode_option functions set
4259 this to `2' if -Wall is used, so we can avoid giving out
4260 lots of errors for people who don't realize what -Wall does. */
4261 if (warn_uninitialized
== 1)
4262 warning ("-Wuninitialized is not supported without -O");
4265 #ifdef OVERRIDE_OPTIONS
4266 /* Some machines may reject certain combinations of options. */
4270 if (profile_block_flag
== 3)
4272 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
4273 profile_block_flag
= 2;
4276 /* Unrolling all loops implies that standard loop unrolling must also
4278 if (flag_unroll_all_loops
)
4279 flag_unroll_loops
= 1;
4280 /* Loop unrolling requires that strength_reduction be on also. Silently
4281 turn on strength reduction here if it isn't already on. Also, the loop
4282 unrolling code assumes that cse will be run after loop, so that must
4283 be turned on also. */
4284 if (flag_unroll_loops
)
4286 flag_strength_reduce
= 1;
4287 flag_rerun_cse_after_loop
= 1;
4290 /* Warn about options that are not supported on this machine. */
4291 #ifndef INSN_SCHEDULING
4292 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
4293 warning ("instruction scheduling not supported on this target machine");
4296 if (flag_delayed_branch
)
4297 warning ("this target machine does not have delayed branches");
4300 /* If we are in verbose mode, write out the version and maybe all the
4301 option flags in use. */
4304 print_version (stderr
, "");
4306 print_switch_values (stderr
, 0, MAX_LINE
, "", " ", "\n");
4309 compile_file (filename
);
4311 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN32__))
4314 char *lim
= (char *) sbrk (0);
4316 fprintf (stderr
, "Data size %d.\n",
4317 lim
- (char *) &environ
);
4321 system ("ps -l 1>&2");
4324 #endif /* not USG */
4326 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN32) */
4329 exit (FATAL_EXIT_CODE
);
4331 exit (FATAL_EXIT_CODE
);
4332 exit (SUCCESS_EXIT_CODE
);
4336 /* Decode -m switches. */
4338 /* Here is a table, controlled by the tm.h file, listing each -m switch
4339 and which bits in `target_switches' it should set or clear.
4340 If VALUE is positive, it is bits to set.
4341 If VALUE is negative, -VALUE is bits to clear.
4342 (The sign bit is not used so there is no confusion.) */
4344 struct {char *name
; int value
;} target_switches
[]
4347 /* This table is similar, but allows the switch to have a value. */
4349 #ifdef TARGET_OPTIONS
4350 struct {char *prefix
; char ** variable
;} target_options
[]
4354 /* Decode the switch -mNAME. */
4357 set_target_switch (name
)
4363 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4364 if (!strcmp (target_switches
[j
].name
, name
))
4366 if (target_switches
[j
].value
< 0)
4367 target_flags
&= ~-target_switches
[j
].value
;
4369 target_flags
|= target_switches
[j
].value
;
4373 #ifdef TARGET_OPTIONS
4375 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4377 int len
= strlen (target_options
[j
].prefix
);
4378 if (!strncmp (target_options
[j
].prefix
, name
, len
))
4380 *target_options
[j
].variable
= name
+ len
;
4387 error ("Invalid option `%s'", name
);
4390 /* Print version information to FILE.
4391 Each line begins with INDENT (for the case where FILE is the
4392 assembler output file). */
4395 print_version (file
, indent
)
4399 fprintf (file
, "%s%s%s version %s", indent
, *indent
!= 0 ? " " : "",
4400 language_string
, version_string
);
4401 fprintf (file
, " (%s)", TARGET_NAME
);
4404 #define __VERSION__ "[unknown]"
4406 fprintf (file
, " compiled by GNU C version %s.\n", __VERSION__
);
4408 fprintf (file
, " compiled by CC.\n");
4412 /* Print an option value and return the adjusted position in the line.
4413 ??? We don't handle error returns from fprintf (disk full); presumably
4414 other code will catch a disk full though. */
4417 print_single_switch (file
, pos
, max
, indent
, sep
, term
, type
, name
)
4420 char *indent
, *sep
, *term
, *type
, *name
;
4422 /* The ultrix fprintf returns 0 on success, so compute the result we want
4423 here since we need it for the following test. */
4424 int len
= strlen (sep
) + strlen (type
) + strlen (name
);
4429 fprintf (file
, "%s", term
);
4434 fprintf (file
, "%s", indent
);
4435 pos
= strlen (indent
);
4437 fprintf (file
, "%s%s%s", sep
, type
, name
);
4442 /* Print active target switches to FILE.
4443 POS is the current cursor position and MAX is the size of a "line".
4444 Each line begins with INDENT and ends with TERM.
4445 Each switch is separated from the next by SEP. */
4448 print_switch_values (file
, pos
, max
, indent
, sep
, term
)
4451 char *indent
, *sep
, *term
;
4456 /* Print the options as passed. */
4458 pos
= print_single_switch (file
, pos
, max
, indent
, *indent
? " " : "", term
,
4459 "options passed: ", "");
4461 for (p
= &save_argv
[1]; *p
!= NULL
; p
++)
4465 if (strcmp (*p
, "-o") == 0)
4471 if (strcmp (*p
, "-quiet") == 0)
4473 if (strcmp (*p
, "-version") == 0)
4478 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
, *p
, "");
4481 fprintf (file
, "%s", term
);
4483 /* Print the -f and -m options that have been enabled.
4484 We don't handle language specific options but printing argv
4487 pos
= print_single_switch (file
, 0, max
, indent
, *indent
? " " : "", term
,
4488 "options enabled: ", "");
4490 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
4491 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
4492 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4493 "-f", f_options
[j
].string
);
4495 /* Print target specific options. */
4497 flags
= target_flags
;
4498 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4499 if (target_switches
[j
].name
[0] != '\0'
4500 && target_switches
[j
].value
> 0
4501 && ((target_switches
[j
].value
& target_flags
)
4502 == target_switches
[j
].value
))
4504 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4505 "-m", target_switches
[j
].name
);
4506 flags
&= ~ target_switches
[j
].value
;
4509 #ifdef TARGET_OPTIONS
4510 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4511 if (*target_options
[j
].variable
!= NULL
)
4514 sprintf (prefix
, "-m%s", target_options
[j
].prefix
);
4515 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4516 prefix
, *target_options
[j
].variable
);
4520 fprintf (file
, "%s", term
);
4523 /* Record the beginning of a new source file, named FILENAME. */
4526 debug_start_source_file (filename
)
4527 register char *filename
;
4529 #ifdef DBX_DEBUGGING_INFO
4530 if (write_symbols
== DBX_DEBUG
)
4531 dbxout_start_new_source_file (filename
);
4533 #ifdef DWARF_DEBUGGING_INFO
4534 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4535 && write_symbols
== DWARF_DEBUG
)
4536 dwarfout_start_new_source_file (filename
);
4537 #endif /* DWARF_DEBUGGING_INFO */
4538 #ifdef DWARF2_DEBUGGING_INFO
4539 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4540 && write_symbols
== DWARF2_DEBUG
)
4541 dwarf2out_start_source_file (filename
);
4542 #endif /* DWARF2_DEBUGGING_INFO */
4543 #ifdef SDB_DEBUGGING_INFO
4544 if (write_symbols
== SDB_DEBUG
)
4545 sdbout_start_new_source_file (filename
);
4549 /* Record the resumption of a source file. LINENO is the line number in
4550 the source file we are returning to. */
4553 debug_end_source_file (lineno
)
4554 register unsigned lineno
;
4556 #ifdef DBX_DEBUGGING_INFO
4557 if (write_symbols
== DBX_DEBUG
)
4558 dbxout_resume_previous_source_file ();
4560 #ifdef DWARF_DEBUGGING_INFO
4561 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4562 && write_symbols
== DWARF_DEBUG
)
4563 dwarfout_resume_previous_source_file (lineno
);
4564 #endif /* DWARF_DEBUGGING_INFO */
4565 #ifdef DWARF2_DEBUGGING_INFO
4566 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4567 && write_symbols
== DWARF2_DEBUG
)
4568 dwarf2out_end_source_file ();
4569 #endif /* DWARF2_DEBUGGING_INFO */
4570 #ifdef SDB_DEBUGGING_INFO
4571 if (write_symbols
== SDB_DEBUG
)
4572 sdbout_resume_previous_source_file ();
4576 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4577 the tail part of the directive line, i.e. the part which is past the
4578 initial whitespace, #, whitespace, directive-name, whitespace part. */
4581 debug_define (lineno
, buffer
)
4582 register unsigned lineno
;
4583 register char *buffer
;
4585 #ifdef DWARF_DEBUGGING_INFO
4586 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4587 && write_symbols
== DWARF_DEBUG
)
4588 dwarfout_define (lineno
, buffer
);
4589 #endif /* DWARF_DEBUGGING_INFO */
4590 #ifdef DWARF2_DEBUGGING_INFO
4591 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4592 && write_symbols
== DWARF2_DEBUG
)
4593 dwarf2out_define (lineno
, buffer
);
4594 #endif /* DWARF2_DEBUGGING_INFO */
4597 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4598 the tail part of the directive line, i.e. the part which is past the
4599 initial whitespace, #, whitespace, directive-name, whitespace part. */
4602 debug_undef (lineno
, buffer
)
4603 register unsigned lineno
;
4604 register char *buffer
;
4606 #ifdef DWARF_DEBUGGING_INFO
4607 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4608 && write_symbols
== DWARF_DEBUG
)
4609 dwarfout_undef (lineno
, buffer
);
4610 #endif /* DWARF_DEBUGGING_INFO */
4611 #ifdef DWARF2_DEBUGGING_INFO
4612 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4613 && write_symbols
== DWARF2_DEBUG
)
4614 dwarf2out_undef (lineno
, buffer
);
4615 #endif /* DWARF2_DEBUGGING_INFO */