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>
39 #ifdef HAVE_SYS_PARAM_H
40 #include <sys/param.h>
43 #undef FLOAT /* This is for hpux. They should change hpux. */
44 #undef FFS /* Some systems define this in param.h. */
46 #ifdef TIME_WITH_SYS_TIME
47 # include <sys/time.h>
51 # include <sys/time.h>
57 #ifdef HAVE_SYS_RESOURCE_H
58 # include <sys/resource.h>
61 #ifdef HAVE_SYS_TIMES_H
62 # include <sys/times.h>
69 #include "insn-attr.h"
76 #ifdef XCOFF_DEBUGGING_INFO
81 /* The extra parameters substantially improve the I/O performance. */
83 vms_fopen (fname
, type
)
87 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
88 fixed arguments, which matches ANSI's specification but not VAXCRTL's
89 pre-ANSI implementation. This hack circumvents the mismatch problem. */
90 FILE *(*vmslib_fopen
)() = (FILE *(*)()) fopen
;
93 return (*vmslib_fopen
) (fname
, type
, "mbc=32",
94 "deq=64", "fop=tef", "shr=nil");
96 return (*vmslib_fopen
) (fname
, type
, "mbc=32");
98 #define fopen vms_fopen
101 #ifndef DEFAULT_GDB_EXTENSIONS
102 #define DEFAULT_GDB_EXTENSIONS 1
105 /* If more than one debugging type is supported, you must define
106 PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
108 This is one long line cause VAXC can't handle a \-newline. */
109 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
110 #ifndef PREFERRED_DEBUGGING_TYPE
111 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
112 #endif /* no PREFERRED_DEBUGGING_TYPE */
113 #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
114 so the following code needn't care. */
115 #ifdef DBX_DEBUGGING_INFO
116 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
118 #ifdef SDB_DEBUGGING_INFO
119 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
121 #ifdef DWARF_DEBUGGING_INFO
122 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
124 #ifdef DWARF2_DEBUGGING_INFO
125 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
127 #ifdef XCOFF_DEBUGGING_INFO
128 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
130 #endif /* More than one debugger format enabled. */
132 /* If still not defined, must have been because no debugging formats
134 #ifndef PREFERRED_DEBUGGING_TYPE
135 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
138 extern int rtx_equal_function_value_matters
;
140 #if ! (defined (VMS) || defined (OS2))
141 extern char **environ
;
143 extern char *version_string
, *language_string
;
145 /* Carry information from ASM_DECLARE_OBJECT_NAME
146 to ASM_FINISH_DECLARE_OBJECT. */
148 extern int size_directive_output
;
149 extern tree last_assemble_variable_decl
;
151 extern void init_lex ();
152 extern void init_decl_processing ();
153 extern void init_obstacks ();
154 extern void init_tree_codes ();
155 extern void init_rtl ();
156 extern void init_regs ();
157 extern void init_optabs ();
158 extern void init_stmt ();
159 extern void init_reg_sets ();
160 extern void dump_flow_info ();
161 extern void dump_sched_info ();
162 extern void dump_local_alloc ();
163 extern void regset_release_memory ();
165 void rest_of_decl_compilation ();
166 void error_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
167 void error_with_decl
PVPROTO((tree decl
, char *s
, ...));
168 void error_for_asm
PVPROTO((rtx insn
, char *s
, ...));
169 void error
PVPROTO((char *s
, ...));
170 void fatal
PVPROTO((char *s
, ...));
171 void warning_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
172 void warning_with_decl
PVPROTO((tree decl
, char *s
, ...));
173 void warning_for_asm
PVPROTO((rtx insn
, char *s
, ...));
174 void warning
PVPROTO((char *s
, ...));
175 void pedwarn
PVPROTO((char *s
, ...));
176 void pedwarn_with_decl
PVPROTO((tree decl
, char *s
, ...));
177 void pedwarn_with_file_and_line
PVPROTO((char *file
, int line
, char *s
, ...));
178 void sorry
PVPROTO((char *s
, ...));
179 void really_sorry
PVPROTO((char *s
, ...));
184 void set_target_switch ();
185 static char *decl_name ();
187 void print_version ();
188 int print_single_switch ();
189 void print_switch_values ();
190 /* Length of line when printing switch values. */
194 extern char *sbrk ();
197 /* Name of program invoked, sans directories. */
201 /* Copy of arguments to main. */
205 /* Name of current original source file (what was input to cpp).
206 This comes from each #-command in the actual input. */
208 char *input_filename
;
210 /* Name of top-level original source file (what was input to cpp).
211 This comes from the #-command at the beginning of the actual input.
212 If there isn't any there, then this is the cc1 input file name. */
214 char *main_input_filename
;
217 /* Stream for reading from the input file. */
221 /* Current line number in real source file. */
225 /* Stack of currently pending input files. */
227 struct file_stack
*input_file_stack
;
229 /* Incremented on each change to input_file_stack. */
230 int input_file_stack_tick
;
232 /* FUNCTION_DECL for function now being parsed or compiled. */
234 extern tree current_function_decl
;
236 /* Name to use as base of names for dump output files. */
238 char *dump_base_name
;
240 /* Bit flags that specify the machine subtype we are compiling for.
241 Bits are tested using macros TARGET_... defined in the tm.h file
242 and set by `-m...' switches. Must be defined in rtlanal.c. */
244 extern int target_flags
;
246 /* Flags saying which kinds of debugging dump have been requested. */
249 int rtl_dump_and_exit
= 0;
250 int jump_opt_dump
= 0;
251 int addressof_dump
= 0;
255 int branch_prob_dump
= 0;
257 int combine_dump
= 0;
258 int regmove_dump
= 0;
260 int local_reg_dump
= 0;
261 int global_reg_dump
= 0;
263 int jump2_opt_dump
= 0;
264 int dbr_sched_dump
= 0;
265 int flag_print_asm_name
= 0;
266 int stack_reg_dump
= 0;
268 /* Name for output file of assembly code, specified with -o. */
272 /* Value of the -G xx switch, and whether it was passed or not. */
276 /* Type(s) of debugging information we are producing (if any).
277 See flags.h for the definitions of the different possible
278 types of debugging information. */
279 enum debug_info_type write_symbols
= NO_DEBUG
;
281 /* Level of debugging information we are producing. See flags.h
282 for the definitions of the different possible levels. */
283 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
285 /* Nonzero means use GNU-only extensions in the generated symbolic
286 debugging information. */
287 /* Currently, this only has an effect when write_symbols is set to
288 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
289 int use_gnu_debug_info_extensions
= 0;
291 /* Nonzero means do optimizations. -O.
292 Particular numeric values stand for particular amounts of optimization;
293 thus, -O2 stores 2 here. However, the optimizations beyond the basic
294 ones are not controlled directly by this variable. Instead, they are
295 controlled by individual `flag_...' variables that are defaulted
296 based on this variable. */
300 /* Number of error messages and warning messages so far. */
303 int warningcount
= 0;
306 /* Flag to output bytecode instead of native assembler */
307 int output_bytecode
= 0;
309 /* Pointer to function to compute the name to use to print a declaration.
310 DECL is the declaration in question.
311 VERBOSITY determines what information will be printed:
312 0: DECL_NAME, demangled as necessary.
313 1: and scope information.
314 2: and any other information that might be interesting, such as function
315 parameter types in C++. */
317 char *(*decl_printable_name
) (/* tree decl, int verbosity */);
319 /* Pointer to function to compute rtl for a language-specific tree code. */
321 struct rtx_def
*(*lang_expand_expr
) ();
323 /* Pointer to function to finish handling an incomplete decl at the
324 end of compilation. */
326 void (*incomplete_decl_finalize_hook
) () = 0;
328 /* Highest label number used at the end of reload. */
330 int max_label_num_after_reload
;
332 /* Nonzero if generating code to do profiling. */
334 int profile_flag
= 0;
336 /* Nonzero if generating code to do profiling on a line-by-line basis. */
338 int profile_block_flag
;
340 /* Nonzero if generating code to profile program flow graph arcs. */
342 int profile_arc_flag
= 0;
344 /* Nonzero if generating info for gcov to calculate line test coverage. */
346 int flag_test_coverage
= 0;
348 /* Nonzero indicates that branch taken probabilities should be calculated. */
350 int flag_branch_probabilities
= 0;
352 /* Nonzero for -pedantic switch: warn about anything
353 that standard spec forbids. */
357 /* Temporarily suppress certain warnings.
358 This is set while reading code from a system header file. */
360 int in_system_header
= 0;
362 /* Nonzero means do stupid register allocation.
363 Currently, this is 1 if `optimize' is 0. */
365 int obey_regdecls
= 0;
367 /* Don't print functions as they are compiled and don't print
368 times taken by the various passes. -quiet. */
374 /* Nonzero means `char' should be signed. */
376 int flag_signed_char
;
378 /* Nonzero means give an enum type only as many bytes as it needs. */
380 int flag_short_enums
;
382 /* Nonzero for -fcaller-saves: allocate values in regs that need to
383 be saved across function calls, if that produces overall better code.
384 Optional now, so people can test it. */
386 #ifdef DEFAULT_CALLER_SAVES
387 int flag_caller_saves
= 1;
389 int flag_caller_saves
= 0;
392 /* Nonzero if structures and unions should be returned in memory.
394 This should only be defined if compatibility with another compiler or
395 with an ABI is needed, because it results in slower code. */
397 #ifndef DEFAULT_PCC_STRUCT_RETURN
398 #define DEFAULT_PCC_STRUCT_RETURN 1
401 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
403 int flag_pcc_struct_return
= DEFAULT_PCC_STRUCT_RETURN
;
405 /* Nonzero for -fforce-mem: load memory value into a register
406 before arithmetic on it. This makes better cse but slower compilation. */
408 int flag_force_mem
= 0;
410 /* Nonzero for -fforce-addr: load memory address into a register before
411 reference to memory. This makes better cse but slower compilation. */
413 int flag_force_addr
= 0;
415 /* Nonzero for -fdefer-pop: don't pop args after each function call;
416 instead save them up to pop many calls' args with one insns. */
418 int flag_defer_pop
= 0;
420 /* Nonzero for -ffloat-store: don't allocate floats and doubles
421 in extended-precision registers. */
423 int flag_float_store
= 0;
425 /* Nonzero for -fcse-follow-jumps:
426 have cse follow jumps to do a more extensive job. */
428 int flag_cse_follow_jumps
;
430 /* Nonzero for -fcse-skip-blocks:
431 have cse follow a branch around a block. */
432 int flag_cse_skip_blocks
;
434 /* Nonzero for -fexpensive-optimizations:
435 perform miscellaneous relatively-expensive optimizations. */
436 int flag_expensive_optimizations
;
438 /* Nonzero for -fthread-jumps:
439 have jump optimize output of loop. */
441 int flag_thread_jumps
;
443 /* Nonzero enables strength-reduction in loop.c. */
445 int flag_strength_reduce
= 0;
447 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
448 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
449 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
452 int flag_unroll_loops
;
454 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
455 This is generally not a win. */
457 int flag_unroll_all_loops
;
459 /* Nonzero forces all invariant computations in loops to be moved
462 int flag_move_all_movables
= 0;
464 /* Nonzero forces all general induction variables in loops to be
467 int flag_reduce_all_givs
= 0;
469 /* Nonzero for -fwritable-strings:
470 store string constants in data segment and don't uniquize them. */
472 int flag_writable_strings
= 0;
474 /* Nonzero means don't put addresses of constant functions in registers.
475 Used for compiling the Unix kernel, where strange substitutions are
476 done on the assembly output. */
478 int flag_no_function_cse
= 0;
480 /* Nonzero for -fomit-frame-pointer:
481 don't make a frame pointer in simple functions that don't require one. */
483 int flag_omit_frame_pointer
= 0;
485 /* Nonzero means place each function into its own section on those platforms
486 which support arbitrary section names and unlimited numbers of sections. */
488 int flag_function_sections
= 0;
490 /* Nonzero to inhibit use of define_optimization peephole opts. */
492 int flag_no_peephole
= 0;
494 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
495 operations in the interest of optimization. For example it allows
496 GCC to assume arguments to sqrt are nonnegative numbers, allowing
497 faster code for sqrt to be generated. */
499 int flag_fast_math
= 0;
501 /* Nonzero means all references through pointers are volatile. */
505 /* Nonzero means treat all global and extern variables as global. */
507 int flag_volatile_global
;
509 /* Nonzero means just do syntax checking; don't output anything. */
511 int flag_syntax_only
= 0;
513 /* Nonzero means to rerun cse after loop optimization. This increases
514 compilation time about 20% and picks up a few more common expressions. */
516 static int flag_rerun_cse_after_loop
;
518 /* Nonzero means to run loop optimizations twice. */
520 int flag_rerun_loop_opt
;
522 /* Nonzero for -finline-functions: ok to inline functions that look like
523 good inline candidates. */
525 int flag_inline_functions
;
527 /* Nonzero for -fkeep-inline-functions: even if we make a function
528 go inline everywhere, keep its definition around for debugging
531 int flag_keep_inline_functions
;
533 /* Nonzero means that functions will not be inlined. */
537 /* Nonzero means that we should emit static const variables
538 regardless of whether or not optimization is turned on. */
540 int flag_keep_static_consts
= 1;
542 /* Nonzero means we should be saving declaration info into a .X file. */
544 int flag_gen_aux_info
= 0;
546 /* Specified name of aux-info file. */
548 static char *aux_info_file_name
;
550 /* Nonzero means make the text shared if supported. */
552 int flag_shared_data
;
554 /* Nonzero means schedule into delayed branch slots if supported. */
556 int flag_delayed_branch
;
558 /* Nonzero if we are compiling pure (sharable) code.
559 Value is 1 if we are doing reasonable (i.e. simple
560 offset into offset table) pic. Value is 2 if we can
561 only perform register offsets. */
565 /* Nonzero means generate extra code for exception handling and enable
566 exception handling. */
568 int flag_exceptions
= 2;
570 /* Nonzero means don't place uninitialized global data in common storage
575 /* Nonzero means pretend it is OK to examine bits of target floats,
576 even if that isn't true. The resulting code will have incorrect constants,
577 but the same series of instructions that the native compiler would make. */
579 int flag_pretend_float
;
581 /* Nonzero means change certain warnings into errors.
582 Usually these are warnings about failure to conform to some standard. */
584 int flag_pedantic_errors
= 0;
586 /* flag_schedule_insns means schedule insns within basic blocks (before
588 flag_schedule_insns_after_reload means schedule insns after
591 int flag_schedule_insns
= 0;
592 int flag_schedule_insns_after_reload
= 0;
595 /* The following flags have effect only for scheduling before register
598 flag_schedule_interblock means schedule insns accross basic blocks.
599 flag_schedule_speculative means allow speculative motion of non-load insns.
600 flag_schedule_speculative_load means allow speculative motion of some
602 flag_schedule_speculative_load_dangerous allows speculative motion of more
604 flag_schedule_reverse_before_reload means try to reverse original order
606 flag_schedule_reverse_after_reload means try to reverse original order
609 int flag_schedule_interblock
= 1;
610 int flag_schedule_speculative
= 1;
611 int flag_schedule_speculative_load
= 0;
612 int flag_schedule_speculative_load_dangerous
= 0;
613 int flag_schedule_reverse_before_reload
= 0;
614 int flag_schedule_reverse_after_reload
= 0;
617 /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
618 by a cheaper branch, on a count register. */
619 int flag_branch_on_count_reg
;
623 /* -finhibit-size-directive inhibits output of .size for ELF.
624 This is used only for compiling crtstuff.c,
625 and it may be extended to other effects
626 needed for crtstuff.c on other systems. */
627 int flag_inhibit_size_directive
= 0;
629 /* -fverbose-asm causes extra commentary information to be produced in
630 the generated assembly code (to make it more readable). This option
631 is generally only of use to those who actually need to read the
632 generated assembly code (perhaps while debugging the compiler itself).
633 -fno-verbose-asm, the default, causes the extra information
634 to be omitted and is useful when comparing two assembler files. */
636 int flag_verbose_asm
= 0;
638 /* -dA causes debug commentary information to be produced in
639 the generated assembly code (to make it more readable). This option
640 is generally only of use to those who actually need to read the
641 generated assembly code (perhaps while debugging the compiler itself).
642 Currently, this switch is only used by dwarfout.c; however, it is intended
643 to be a catchall for printing debug information in the assembler file. */
645 int flag_debug_asm
= 0;
647 /* -fgnu-linker specifies use of the GNU linker for initializations.
648 (Or, more generally, a linker that handles initializations.)
649 -fno-gnu-linker says that collect2 will be used. */
651 int flag_gnu_linker
= 0;
653 int flag_gnu_linker
= 1;
656 /* Tag all structures with __attribute__(packed) */
657 int flag_pack_struct
= 0;
659 /* Emit code to check for stack overflow; also may cause large objects
660 to be allocated dynamically. */
661 int flag_stack_check
;
663 /* -fcheck-memory-usage causes extra code to be generated in order to check
664 memory accesses. This is used by a detector of bad memory accesses such
666 int flag_check_memory_usage
= 0;
668 /* -fprefix-function-name causes function name to be prefixed. This
669 can be used with -fcheck-memory-usage to isolate code compiled with
670 -fcheck-memory-usage. */
671 int flag_prefix_function_name
= 0;
673 int flag_regmove
= 0;
675 /* 0 if pointer arguments may alias each other. True in C.
676 1 if pointer arguments may not alias each other but may alias
678 2 if pointer arguments may not alias each other and may not
679 alias global variables. True in Fortran.
680 This defaults to 0 for C. */
681 int flag_argument_noalias
= 0;
683 /* Table of language-independent -f options.
684 STRING is the option name. VARIABLE is the address of the variable.
685 ON_VALUE is the value to store in VARIABLE
686 if `-fSTRING' is seen as an option.
687 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
689 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
691 {"float-store", &flag_float_store
, 1},
692 {"volatile", &flag_volatile
, 1},
693 {"volatile-global", &flag_volatile_global
, 1},
694 {"defer-pop", &flag_defer_pop
, 1},
695 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
696 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
697 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
698 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
699 {"thread-jumps", &flag_thread_jumps
, 1},
700 {"strength-reduce", &flag_strength_reduce
, 1},
701 {"unroll-loops", &flag_unroll_loops
, 1},
702 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
703 {"move-all-movables", &flag_move_all_movables
, 1},
704 {"reduce-all-givs", &flag_reduce_all_givs
, 1},
705 {"writable-strings", &flag_writable_strings
, 1},
706 {"peephole", &flag_no_peephole
, 0},
707 {"force-mem", &flag_force_mem
, 1},
708 {"force-addr", &flag_force_addr
, 1},
709 {"function-cse", &flag_no_function_cse
, 0},
710 {"inline-functions", &flag_inline_functions
, 1},
711 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
712 {"inline", &flag_no_inline
, 0},
713 {"keep-static-consts", &flag_keep_static_consts
, 1},
714 {"syntax-only", &flag_syntax_only
, 1},
715 {"shared-data", &flag_shared_data
, 1},
716 {"caller-saves", &flag_caller_saves
, 1},
717 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
718 {"reg-struct-return", &flag_pcc_struct_return
, 0},
719 {"delayed-branch", &flag_delayed_branch
, 1},
720 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
721 {"rerun-loop-opt", &flag_rerun_loop_opt
, 1},
722 {"pretend-float", &flag_pretend_float
, 1},
723 {"schedule-insns", &flag_schedule_insns
, 1},
724 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
726 {"sched-interblock",&flag_schedule_interblock
, 1},
727 {"sched-spec",&flag_schedule_speculative
, 1},
728 {"sched-spec-load",&flag_schedule_speculative_load
, 1},
729 {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous
, 1},
730 {"sched-reverse-S",&flag_schedule_reverse_before_reload
, 1},
731 {"sched-reverse-R",&flag_schedule_reverse_after_reload
, 1},
732 {"branch-count-reg",&flag_branch_on_count_reg
, 1},
734 {"pic", &flag_pic
, 1},
735 {"PIC", &flag_pic
, 2},
736 {"exceptions", &flag_exceptions
, 1},
737 {"sjlj-exceptions", &exceptions_via_longjmp
, 1},
738 {"asynchronous-exceptions", &asynchronous_exceptions
, 1},
739 {"profile-arcs", &profile_arc_flag
, 1},
740 {"test-coverage", &flag_test_coverage
, 1},
741 {"branch-probabilities", &flag_branch_probabilities
, 1},
742 {"fast-math", &flag_fast_math
, 1},
743 {"common", &flag_no_common
, 0},
744 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
745 {"function-sections", &flag_function_sections
, 1},
746 {"verbose-asm", &flag_verbose_asm
, 1},
747 {"gnu-linker", &flag_gnu_linker
, 1},
748 {"regmove", &flag_regmove
, 1},
749 {"pack-struct", &flag_pack_struct
, 1},
750 {"stack-check", &flag_stack_check
, 1},
751 {"bytecode", &output_bytecode
, 1},
752 {"argument-alias", &flag_argument_noalias
, 0},
753 {"argument-noalias", &flag_argument_noalias
, 1},
754 {"argument-noalias-global", &flag_argument_noalias
, 2},
755 {"check-memory-usage", &flag_check_memory_usage
, 1},
756 {"prefix-function-name", &flag_prefix_function_name
, 1}
759 /* Table of language-specific options. */
761 char *lang_options
[] =
764 "-fallow-single-precision",
766 "-fsigned-bitfields",
767 "-funsigned-bitfields",
768 "-fno-signed-bitfields",
769 "-fno-unsigned-bitfields",
773 "-fno-unsigned-char",
789 "-fno-cond-mismatch",
790 "-fdollars-in-identifiers",
791 "-fno-dollars-in-identifiers",
800 "-Wbad-function-cast",
801 "-Wno-bad-function-cast",
805 "-Wno-char-subscripts",
816 "-Wimplicit-function-declaration",
817 "-Wno-implicit-function-declaration",
818 "-Werror-implicit-function-declaration",
826 "-Wno-missing-braces",
827 "-Wmissing-declarations",
828 "-Wno-missing-declarations",
829 "-Wmissing-prototypes",
830 "-Wno-missing-prototypes",
832 "-Wno-nested-externs",
836 "-Wno-pointer-arith",
838 "-Wno-redundant-decls",
841 "-Wstrict-prototypes",
842 "-Wno-strict-prototypes",
850 "-Wno-write-strings",
852 /* these are for obj c */
863 "-print-objc-runtime-info",
869 /* Options controlling warnings */
871 /* Don't print warning messages. -w. */
873 int inhibit_warnings
= 0;
875 /* Print various extra warnings. -W. */
877 int extra_warnings
= 0;
879 /* Treat warnings as errors. -Werror. */
881 int warnings_are_errors
= 0;
883 /* Nonzero to warn about unused local variables. */
887 /* Nonzero to warn about variables used before they are initialized. */
889 int warn_uninitialized
;
891 /* Nonzero means warn about all declarations which shadow others. */
895 /* Warn if a switch on an enum fails to have a case for every enum value. */
899 /* Nonzero means warn about function definitions that default the return type
900 or that use a null return and have a return-type other than void. */
902 int warn_return_type
;
904 /* Nonzero means warn about pointer casts that increase the required
905 alignment of the target type (and might therefore lead to a crash
906 due to a misaligned access). */
910 /* Nonzero means warn about any identifiers that match in the first N
911 characters. The value N is in `id_clash_len'. */
914 unsigned id_clash_len
;
916 /* Nonzero means warn about any objects definitions whose size is larger
917 than N bytes. Also want about function definitions whose returned
918 values are larger than N bytes. The value N is in `larger_than_size'. */
920 int warn_larger_than
;
921 unsigned larger_than_size
;
923 /* Nonzero means warn if inline function is too large. */
927 /* Warn if a function returns an aggregate,
928 since there are often incompatible calling conventions for doing this. */
930 int warn_aggregate_return
;
932 /* Likewise for -W. */
934 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
936 {"unused", &warn_unused
, 1},
937 {"error", &warnings_are_errors
, 1},
938 {"shadow", &warn_shadow
, 1},
939 {"switch", &warn_switch
, 1},
940 {"aggregate-return", &warn_aggregate_return
, 1},
941 {"cast-align", &warn_cast_align
, 1},
942 {"uninitialized", &warn_uninitialized
, 1},
943 {"inline", &warn_inline
, 1}
946 /* Output files for assembler code (real compiler output)
947 and debugging dumps. */
952 FILE *jump_opt_dump_file
;
953 FILE *addressof_dump_file
;
955 FILE *loop_dump_file
;
956 FILE *cse2_dump_file
;
957 FILE *branch_prob_dump_file
;
958 FILE *flow_dump_file
;
959 FILE *combine_dump_file
;
960 FILE *regmove_dump_file
;
961 FILE *sched_dump_file
;
962 FILE *local_reg_dump_file
;
963 FILE *global_reg_dump_file
;
964 FILE *sched2_dump_file
;
965 FILE *jump2_opt_dump_file
;
966 FILE *dbr_sched_dump_file
;
967 FILE *stack_reg_dump_file
;
969 /* Time accumulators, to count the total time spent in various passes. */
973 int integration_time
;
978 int branch_prob_time
;
983 int local_alloc_time
;
984 int global_alloc_time
;
987 int shorten_branch_time
;
993 /* Return time used so far, in microseconds. */
998 #if !defined (_WIN32) || defined (__CYGWIN32__)
1003 struct rusage rusage
;
1008 int proc_system_time
;
1009 int child_user_time
;
1010 int child_system_time
;
1020 #else /* not BeOS */
1021 #if defined (_WIN32) && !defined (__CYGWIN32__)
1025 return (clock() * 1000);
1026 #else /* not _WIN32 */
1029 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
1032 getrusage (0, &rusage
);
1033 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
1034 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
1036 times ((void *) &vms_times
);
1037 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
1041 #endif /* __BEOS__ */
1044 #define TIMEVAR(VAR, BODY) \
1045 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
1048 print_time (str
, total
)
1053 "time in %s: %d.%06d\n",
1054 str
, total
/ 1000000, total
% 1000000);
1057 /* Count an error or warning. Return 1 if the message should be printed. */
1060 count_error (warningp
)
1063 if (warningp
&& inhibit_warnings
)
1066 if (warningp
&& !warnings_are_errors
)
1070 static int warning_message
= 0;
1072 if (warningp
&& !warning_message
)
1074 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
1075 warning_message
= 1;
1083 /* Print a fatal error message. NAME is the text.
1084 Also include a system error message based on `errno'. */
1087 pfatal_with_name (name
)
1090 fprintf (stderr
, "%s: ", progname
);
1092 exit (FATAL_EXIT_CODE
);
1096 fatal_io_error (name
)
1099 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
1100 exit (FATAL_EXIT_CODE
);
1103 /* Called to give a better error message for a bad insn rather than
1104 just calling abort(). */
1107 fatal_insn (message
, insn
)
1111 if (!output_bytecode
)
1117 fflush (asm_out_file
);
1119 fflush (aux_info_file
);
1121 fflush (rtl_dump_file
);
1122 if (jump_opt_dump_file
)
1123 fflush (jump_opt_dump_file
);
1124 if (addressof_dump_file
)
1125 fflush (addressof_dump_file
);
1127 fflush (cse_dump_file
);
1129 fflush (loop_dump_file
);
1131 fflush (cse2_dump_file
);
1133 fflush (flow_dump_file
);
1134 if (combine_dump_file
)
1135 fflush (combine_dump_file
);
1136 if (regmove_dump_file
)
1137 fflush (regmove_dump_file
);
1138 if (sched_dump_file
)
1139 fflush (sched_dump_file
);
1140 if (local_reg_dump_file
)
1141 fflush (local_reg_dump_file
);
1142 if (global_reg_dump_file
)
1143 fflush (global_reg_dump_file
);
1144 if (sched2_dump_file
)
1145 fflush (sched2_dump_file
);
1146 if (jump2_opt_dump_file
)
1147 fflush (jump2_opt_dump_file
);
1148 if (dbr_sched_dump_file
)
1149 fflush (dbr_sched_dump_file
);
1150 if (stack_reg_dump_file
)
1151 fflush (stack_reg_dump_file
);
1157 /* Called to give a better error message when we don't have an insn to match
1158 what we are looking for or if the insn's constraints aren't satisfied,
1159 rather than just calling abort(). */
1162 fatal_insn_not_found (insn
)
1165 if (INSN_CODE (insn
) < 0)
1166 fatal_insn ("internal error--unrecognizable insn:", insn
);
1168 fatal_insn ("internal error--insn does not satisfy its constraints:", insn
);
1171 /* This is the default decl_printable_name function. */
1174 decl_name (decl
, verbosity
)
1178 return IDENTIFIER_POINTER (DECL_NAME (decl
));
1181 static int need_error_newline
;
1183 /* Function of last error message;
1184 more generally, function such that if next error message is in it
1185 then we don't have to mention the function name. */
1186 static tree last_error_function
= NULL
;
1188 /* Used to detect when input_file_stack has changed since last described. */
1189 static int last_error_tick
;
1191 /* Called when the start of a function definition is parsed,
1192 this function prints on stderr the name of the function. */
1195 announce_function (decl
)
1200 if (rtl_dump_and_exit
)
1201 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1203 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, 2));
1205 need_error_newline
= 1;
1206 last_error_function
= current_function_decl
;
1210 /* The default function to print out name of current function that caused
1214 default_print_error_function (file
)
1217 if (last_error_function
!= current_function_decl
)
1219 char *kind
= "function";
1220 if (current_function_decl
!= 0
1221 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
1225 fprintf (stderr
, "%s: ", file
);
1227 if (current_function_decl
== NULL
)
1228 fprintf (stderr
, "At top level:\n");
1231 char *name
= (*decl_printable_name
) (current_function_decl
, 2);
1232 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
1235 last_error_function
= current_function_decl
;
1239 /* Called by report_error_function to print out function name.
1240 * Default may be overridden by language front-ends. */
1242 void (*print_error_function
) PROTO((char *)) = default_print_error_function
;
1244 /* Prints out, if necessary, the name of the current function
1245 that caused an error. Called from all error and warning functions. */
1248 report_error_function (file
)
1251 struct file_stack
*p
;
1253 if (need_error_newline
)
1255 fprintf (stderr
, "\n");
1256 need_error_newline
= 0;
1259 (*print_error_function
) (file
);
1261 if (input_file_stack
&& input_file_stack
->next
!= 0
1262 && input_file_stack_tick
!= last_error_tick
1263 && file
== input_filename
)
1265 fprintf (stderr
, "In file included");
1266 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1268 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
1270 fprintf (stderr
, ",\n ");
1272 fprintf (stderr
, ":\n");
1273 last_error_tick
= input_file_stack_tick
;
1277 /* Print a message. */
1280 vmessage (prefix
, s
, ap
)
1286 fprintf (stderr
, "%s: ", prefix
);
1289 vfprintf (stderr
, s
, ap
);
1292 HOST_WIDE_INT v1
= va_arg(ap
, HOST_WIDE_INT
);
1293 HOST_WIDE_INT v2
= va_arg(ap
, HOST_WIDE_INT
);
1294 HOST_WIDE_INT v3
= va_arg(ap
, HOST_WIDE_INT
);
1295 HOST_WIDE_INT v4
= va_arg(ap
, HOST_WIDE_INT
);
1296 fprintf (stderr
, s
, v1
, v2
, v3
, v4
);
1301 /* Print a message relevant to line LINE of file FILE. */
1304 v_message_with_file_and_line (file
, line
, prefix
, s
, ap
)
1312 fprintf (stderr
, "%s:%d: ", file
, line
);
1314 fprintf (stderr
, "%s: ", progname
);
1316 vmessage (prefix
, s
, ap
);
1317 fputc ('\n', stderr
);
1320 /* Print a message relevant to the given DECL. */
1323 v_message_with_decl (decl
, prefix
, s
, ap
)
1331 fprintf (stderr
, "%s:%d: ",
1332 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1335 fprintf (stderr
, "%s: ", prefix
);
1337 /* Do magic to get around lack of varargs support for insertion
1338 of arguments into existing list. We know that the decl is first;
1339 we ass_u_me that it will be printed with "%s". */
1341 for (p
= s
; *p
; ++p
)
1345 if (*(p
+ 1) == '%')
1352 if (p
> s
) /* Print the left-hand substring. */
1354 char fmt
[sizeof "%.255s"];
1357 if (width
> 255L) width
= 255L; /* arbitrary */
1358 sprintf (fmt
, "%%.%lds", width
);
1359 fprintf (stderr
, fmt
, s
);
1362 if (*p
== '%') /* Print the name. */
1364 char *n
= (DECL_NAME (decl
)
1365 ? (*decl_printable_name
) (decl
, 2)
1371 if (isalpha (*(p
- 1) & 0xFF))
1376 if (*p
) /* Print the rest of the message. */
1377 vmessage ((char *)NULL
, p
, ap
);
1379 fputc ('\n', stderr
);
1382 /* Figure file and line of the given INSN. */
1385 file_and_line_for_asm (insn
, pfile
, pline
)
1390 rtx body
= PATTERN (insn
);
1393 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1394 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1395 asmop
= SET_SRC (body
);
1396 else if (GET_CODE (body
) == ASM_OPERANDS
)
1398 else if (GET_CODE (body
) == PARALLEL
1399 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1400 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1401 else if (GET_CODE (body
) == PARALLEL
1402 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1403 asmop
= XVECEXP (body
, 0, 0);
1409 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1410 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1414 *pfile
= input_filename
;
1419 /* Report an error at line LINE of file FILE. */
1422 v_error_with_file_and_line (file
, line
, s
, ap
)
1429 report_error_function (file
);
1430 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1434 error_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1446 file
= va_arg (ap
, char *);
1447 line
= va_arg (ap
, int);
1448 s
= va_arg (ap
, char *);
1451 v_error_with_file_and_line (file
, line
, s
, ap
);
1455 /* Report an error at the declaration DECL.
1456 S is a format string which uses %s to substitute the declaration
1457 name; subsequent substitutions are a la printf. */
1460 v_error_with_decl (decl
, s
, ap
)
1466 report_error_function (DECL_SOURCE_FILE (decl
));
1467 v_message_with_decl (decl
, (char *)NULL
, s
, ap
);
1471 error_with_decl
VPROTO((tree decl
, char *s
, ...))
1482 decl
= va_arg (ap
, tree
);
1483 s
= va_arg (ap
, char *);
1486 v_error_with_decl (decl
, s
, ap
);
1490 /* Report an error at the line number of the insn INSN.
1491 This is used only when INSN is an `asm' with operands,
1492 and each ASM_OPERANDS records its own source file and line. */
1495 v_error_for_asm (insn
, s
, ap
)
1504 file_and_line_for_asm (insn
, &file
, &line
);
1505 report_error_function (file
);
1506 v_message_with_file_and_line (file
, line
, (char *)NULL
, s
, ap
);
1510 error_for_asm
VPROTO((rtx insn
, char *s
, ...))
1521 insn
= va_arg (ap
, rtx
);
1522 s
= va_arg (ap
, char *);
1525 v_error_for_asm (insn
, s
, ap
);
1529 /* Report an error at the current line number. */
1536 v_error_with_file_and_line (input_filename
, lineno
, s
, ap
);
1540 error
VPROTO((char *s
, ...))
1550 s
= va_arg (ap
, char *);
1557 /* Report a fatal error at the current line number. */
1565 exit (FATAL_EXIT_CODE
);
1569 fatal
VPROTO((char *s
, ...))
1579 s
= va_arg (ap
, char *);
1586 /* Report a warning at line LINE of file FILE. */
1589 v_warning_with_file_and_line (file
, line
, s
, ap
)
1595 if (count_error (1))
1597 report_error_function (file
);
1598 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1603 warning_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1615 file
= va_arg (ap
, char *);
1616 line
= va_arg (ap
, int);
1617 s
= va_arg (ap
, char *);
1620 v_warning_with_file_and_line (file
, line
, s
, ap
);
1624 /* Report a warning at the declaration DECL.
1625 S is a format string which uses %s to substitute the declaration
1626 name; subsequent substitutions are a la printf. */
1629 v_warning_with_decl (decl
, s
, ap
)
1634 if (count_error (1))
1636 report_error_function (DECL_SOURCE_FILE (decl
));
1637 v_message_with_decl (decl
, "warning", s
, ap
);
1642 warning_with_decl
VPROTO((tree decl
, char *s
, ...))
1653 decl
= va_arg (ap
, tree
);
1654 s
= va_arg (ap
, char *);
1657 v_warning_with_decl (decl
, s
, ap
);
1661 /* Report a warning at the line number of the insn INSN.
1662 This is used only when INSN is an `asm' with operands,
1663 and each ASM_OPERANDS records its own source file and line. */
1666 v_warning_for_asm (insn
, s
, ap
)
1671 if (count_error (1))
1676 file_and_line_for_asm (insn
, &file
, &line
);
1677 report_error_function (file
);
1678 v_message_with_file_and_line (file
, line
, "warning", s
, ap
);
1683 warning_for_asm
VPROTO((rtx insn
, char *s
, ...))
1694 insn
= va_arg (ap
, rtx
);
1695 s
= va_arg (ap
, char *);
1698 v_warning_for_asm (insn
, s
, ap
);
1702 /* Report a warning at the current line number. */
1709 v_warning_with_file_and_line (input_filename
, lineno
, s
, ap
);
1713 warning
VPROTO((char *s
, ...))
1723 s
= va_arg (ap
, char *);
1730 /* These functions issue either warnings or errors depending on
1731 -pedantic-errors. */
1738 if (flag_pedantic_errors
)
1745 pedwarn
VPROTO((char *s
, ...))
1755 s
= va_arg (ap
, char *);
1763 v_pedwarn_with_decl (decl
, s
, ap
)
1768 /* We don't want -pedantic-errors to cause the compilation to fail from
1769 "errors" in system header files. Sometimes fixincludes can't fix what's
1770 broken (eg: unsigned char bitfields - fixing it may change the alignment
1771 which will cause programs to mysteriously fail because the C library
1772 or kernel uses the original layout). There's no point in issuing a
1773 warning either, it's just unnecessary noise. */
1775 if (! DECL_IN_SYSTEM_HEADER (decl
))
1777 if (flag_pedantic_errors
)
1778 v_error_with_decl (decl
, s
, ap
);
1780 v_warning_with_decl (decl
, s
, ap
);
1785 pedwarn_with_decl
VPROTO((tree decl
, char *s
, ...))
1796 decl
= va_arg (ap
, tree
);
1797 s
= va_arg (ap
, char *);
1800 v_pedwarn_with_decl (decl
, s
, ap
);
1805 v_pedwarn_with_file_and_line (file
, line
, s
, ap
)
1811 if (flag_pedantic_errors
)
1812 v_error_with_file_and_line (file
, line
, s
, ap
);
1814 v_warning_with_file_and_line (file
, line
, s
, ap
);
1818 pedwarn_with_file_and_line
VPROTO((char *file
, int line
, char *s
, ...))
1830 file
= va_arg (ap
, char *);
1831 line
= va_arg (ap
, int);
1832 s
= va_arg (ap
, char *);
1835 v_pedwarn_with_file_and_line (file
, line
, s
, ap
);
1839 /* Apologize for not implementing some feature. */
1848 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1850 fprintf (stderr
, "%s: ", progname
);
1851 vmessage ("sorry, not implemented", s
, ap
);
1852 fputc ('\n', stderr
);
1856 sorry
VPROTO((char *s
, ...))
1866 s
= va_arg (ap
, char *);
1873 /* Apologize for not implementing some feature, then quit. */
1876 v_really_sorry (s
, ap
)
1882 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1884 fprintf (stderr
, "%s: ", progname
);
1885 vmessage ("sorry, not implemented", s
, ap
);
1886 fatal (" (fatal)\n");
1890 really_sorry
VPROTO((char *s
, ...))
1900 s
= va_arg (ap
, char *);
1903 v_really_sorry (s
, ap
);
1907 /* More 'friendly' abort that prints the line and file.
1908 config.h can #define abort fancy_abort if you like that sort of thing.
1910 I don't think this is actually a good idea.
1911 Other sorts of crashes will look a certain way.
1912 It is a good thing if crashes from calling abort look the same way.
1918 fatal ("internal gcc abort");
1921 /* This calls abort and is used to avoid problems when abort if a macro.
1922 It is used when we need to pass the address of abort. */
1930 /* When `malloc.c' is compiled with `rcheck' defined,
1931 it calls this function to report clobberage. */
1939 /* Same as `malloc' but report error if no memory available. */
1945 register char *value
= (char *) malloc (size
);
1946 if (value
== 0 && size
!= 0)
1947 fatal ("virtual memory exhausted");
1951 /* Same as `realloc' but report error if no memory available.
1952 Also handle null PTR even if the vendor realloc gets it wrong. */
1955 xrealloc (ptr
, size
)
1960 ? (char *) realloc (ptr
, size
)
1961 : (char *) malloc (size
));
1963 fatal ("virtual memory exhausted");
1967 /* Same as `strdup' but report error if no memory available. */
1973 register char *result
= (char *) malloc (strlen (s
) + 1);
1976 fatal ("virtual memory exhausted");
1981 /* Return the logarithm of X, base 2, considering X unsigned,
1982 if X is a power of 2. Otherwise, returns -1.
1984 This should be used via the `exact_log2' macro. */
1988 register unsigned HOST_WIDE_INT x
;
1990 register int log
= 0;
1991 /* Test for 0 or a power of 2. */
1992 if (x
== 0 || x
!= (x
& -x
))
1994 while ((x
>>= 1) != 0)
1999 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
2000 If X is 0, return -1.
2002 This should be used via the floor_log2 macro. */
2006 register unsigned HOST_WIDE_INT x
;
2008 register int log
= -1;
2015 static int float_handler_set
;
2017 jmp_buf float_handler
;
2019 /* Signals actually come here. */
2022 float_signal (signo
)
2023 /* If this is missing, some compilers complain. */
2026 if (float_handled
== 0)
2028 #if defined (USG) || defined (hpux)
2029 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
2032 signal (SIGFPE
, float_signal
);
2033 longjmp (float_handler
, 1);
2036 /* Specify where to longjmp to when a floating arithmetic error happens.
2037 If HANDLER is 0, it means don't handle the errors any more. */
2040 set_float_handler (handler
)
2043 float_handled
= (handler
!= 0);
2045 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2047 if (float_handled
&& ! float_handler_set
)
2049 signal (SIGFPE
, float_signal
);
2050 float_handler_set
= 1;
2054 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
2055 error happens, pushing the previous specification into OLD_HANDLER.
2056 Return an indication of whether there was a previous handler in effect. */
2059 push_float_handler (handler
, old_handler
)
2060 jmp_buf handler
, old_handler
;
2062 int was_handled
= float_handled
;
2066 bcopy ((char *) float_handler
, (char *) old_handler
,
2067 sizeof (float_handler
));
2069 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2073 /* Restore the previous specification of whether and where to longjmp to
2074 when a floating arithmetic error happens. */
2077 pop_float_handler (handled
, handler
)
2081 float_handled
= handled
;
2083 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2086 /* Handler for SIGPIPE. */
2090 /* If this is missing, some compilers complain. */
2093 fatal ("output pipe has been closed");
2096 /* Strip off a legitimate source ending from the input string NAME of
2097 length LEN. Rather than having to know the names used by all of
2098 our front ends, we strip off an ending of a period followed by one,
2099 two, or three characters. */
2102 strip_off_ending (name
, len
)
2106 if (len
> 2 && name
[len
- 2] == '.')
2107 name
[len
- 2] = '\0';
2108 else if (len
> 3 && name
[len
- 3] == '.')
2109 name
[len
- 3] = '\0';
2110 else if (len
> 4 && name
[len
- 4] == '.')
2111 name
[len
- 4] = '\0';
2114 /* Output a quoted string. */
2117 output_quoted_string (asm_file
, string
)
2121 #ifdef OUTPUT_QUOTED_STRING
2122 OUTPUT_QUOTED_STRING (asm_file
, string
);
2126 putc ('\"', asm_file
);
2127 while ((c
= *string
++) != 0)
2129 if (c
== '\"' || c
== '\\')
2130 putc ('\\', asm_file
);
2133 putc ('\"', asm_file
);
2137 /* Output a file name in the form wanted by System V. */
2140 output_file_directive (asm_file
, input_name
)
2144 int len
= strlen (input_name
);
2145 char *na
= input_name
+ len
;
2147 /* NA gets INPUT_NAME sans directory names. */
2148 while (na
> input_name
)
2155 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2156 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
2158 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2159 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
2161 fprintf (asm_file
, "\t.file\t");
2162 output_quoted_string (asm_file
, na
);
2163 fputc ('\n', asm_file
);
2168 /* Routine to build language identifier for object file. */
2171 output_lang_identify (asm_out_file
)
2174 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2175 char *s
= (char *) alloca (len
);
2176 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
2177 ASM_OUTPUT_LABEL (asm_out_file
, s
);
2180 /* Routine to open a dump file. */
2183 open_dump_file (base_name
, suffix
)
2188 char *dumpname
= (char *) alloca (strlen (base_name
) + strlen (suffix
) + 1);
2190 strcpy (dumpname
, base_name
);
2191 strcat (dumpname
, suffix
);
2192 f
= fopen (dumpname
, "w");
2194 pfatal_with_name (dumpname
);
2198 /* Compile an entire file of output from cpp, named NAME.
2199 Write a file of assembly output and various debugging dumps. */
2208 int name_specified
= name
!= 0;
2210 if (dump_base_name
== 0)
2211 dump_base_name
= name
? name
: "gccdump";
2215 integration_time
= 0;
2220 branch_prob_time
= 0;
2225 local_alloc_time
= 0;
2226 global_alloc_time
= 0;
2229 shorten_branch_time
= 0;
2236 /* Open input file. */
2238 if (name
== 0 || !strcmp (name
, "-"))
2244 finput
= fopen (name
, "r");
2246 pfatal_with_name (name
);
2248 #ifdef IO_BUFFER_SIZE
2249 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
2251 #endif /* !USE_CPPLIB */
2253 /* Initialize data in various passes. */
2262 /* Some of these really don't need to be called when generating bytecode,
2263 but the options would have to be parsed first to know that. -bson */
2265 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2266 || debug_info_level
== DINFO_LEVEL_VERBOSE
2267 || flag_test_coverage
);
2269 init_decl_processing ();
2278 if (flag_caller_saves
)
2279 init_caller_save ();
2281 /* If auxiliary info generation is desired, open the output file.
2282 This goes in the same directory as the source file--unlike
2283 all the other output files. */
2284 if (flag_gen_aux_info
)
2286 aux_info_file
= fopen (aux_info_file_name
, "w");
2287 if (aux_info_file
== 0)
2288 pfatal_with_name (aux_info_file_name
);
2291 /* If rtl dump desired, open the output file. */
2293 rtl_dump_file
= open_dump_file (dump_base_name
, ".rtl");
2295 /* If jump_opt dump desired, open the output file. */
2297 jump_opt_dump_file
= open_dump_file (dump_base_name
, ".jump");
2299 /* If addressof dump desired, open the output file. */
2301 addressof_dump_file
= open_dump_file (dump_base_name
, ".addressof");
2303 /* If cse dump desired, open the output file. */
2305 cse_dump_file
= open_dump_file (dump_base_name
, ".cse");
2307 /* If loop dump desired, open the output file. */
2309 loop_dump_file
= open_dump_file (dump_base_name
, ".loop");
2311 /* If cse2 dump desired, open the output file. */
2313 cse2_dump_file
= open_dump_file (dump_base_name
, ".cse2");
2315 /* If branch_prob dump desired, open the output file. */
2316 if (branch_prob_dump
)
2317 branch_prob_dump_file
= open_dump_file (dump_base_name
, ".bp");
2319 /* If flow dump desired, open the output file. */
2321 flow_dump_file
= open_dump_file (dump_base_name
, ".flow");
2323 /* If combine dump desired, open the output file. */
2325 combine_dump_file
= open_dump_file (dump_base_name
, ".combine");
2327 /* If regmove dump desired, open the output file. */
2329 regmove_dump_file
= open_dump_file (dump_base_name
, ".regmove");
2331 /* If scheduling dump desired, open the output file. */
2333 sched_dump_file
= open_dump_file (dump_base_name
, ".sched");
2335 /* If local_reg dump desired, open the output file. */
2337 local_reg_dump_file
= open_dump_file (dump_base_name
, ".lreg");
2339 /* If global_reg dump desired, open the output file. */
2340 if (global_reg_dump
)
2341 global_reg_dump_file
= open_dump_file (dump_base_name
, ".greg");
2343 /* If 2nd scheduling dump desired, open the output file. */
2345 sched2_dump_file
= open_dump_file (dump_base_name
, ".sched2");
2347 /* If jump2_opt dump desired, open the output file. */
2349 jump2_opt_dump_file
= open_dump_file (dump_base_name
, ".jump2");
2351 /* If dbr_sched dump desired, open the output file. */
2353 dbr_sched_dump_file
= open_dump_file (dump_base_name
, ".dbr");
2357 /* If stack_reg dump desired, open the output file. */
2359 stack_reg_dump_file
= open_dump_file (dump_base_name
, ".stack");
2363 /* Open assembler code output file. */
2365 if (! name_specified
&& asm_file_name
== 0)
2366 asm_out_file
= stdout
;
2369 int len
= strlen (dump_base_name
);
2370 register char *dumpname
= (char *) xmalloc (len
+ 6);
2371 strcpy (dumpname
, dump_base_name
);
2372 strip_off_ending (dumpname
, len
);
2373 strcat (dumpname
, ".s");
2374 if (asm_file_name
== 0)
2376 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
2377 strcpy (asm_file_name
, dumpname
);
2379 if (!strcmp (asm_file_name
, "-"))
2380 asm_out_file
= stdout
;
2382 asm_out_file
= fopen (asm_file_name
, "w");
2383 if (asm_out_file
== 0)
2384 pfatal_with_name (asm_file_name
);
2387 #ifdef IO_BUFFER_SIZE
2388 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
2389 _IOFBF
, IO_BUFFER_SIZE
);
2392 input_filename
= name
;
2394 /* Put an entry on the input file stack for the main input file. */
2396 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
2397 input_file_stack
->next
= 0;
2398 input_file_stack
->name
= input_filename
;
2400 /* Gross. Gross. lang_init is (I think) the first callback into
2401 the language front end, and is thus the first opportunity to
2402 have the selected language override the default value for any
2405 So the default value for flag_exceptions is 2 (uninitialized).
2406 If we encounter -fno-exceptions or -fexceptions, then flag_exceptions
2407 will be set to zero or one respectively.
2409 flag_exceptions can also be set by lang_init to something other
2410 than the default "uninitialized" value of 2.
2412 After lang_init, if the value is still 2, then we default to
2413 -fno-exceptions (value will be reset to zero).
2415 When our EH mechanism is low enough overhead that we can enable
2416 it by default for languages other than C++, then all this braindamage
2419 /* Perform language-specific initialization.
2420 This may set main_input_filename. */
2423 if (flag_exceptions
== 2)
2424 flag_exceptions
= 0;
2426 /* If the input doesn't start with a #line, use the input name
2427 as the official input file name. */
2428 if (main_input_filename
== 0)
2429 main_input_filename
= name
;
2431 if (!output_bytecode
)
2433 ASM_FILE_START (asm_out_file
);
2435 #ifdef ASM_COMMENT_START
2436 if (flag_verbose_asm
)
2438 /* Print the list of options in effect. */
2439 print_version (asm_out_file
, ASM_COMMENT_START
);
2440 print_switch_values (asm_out_file
, 0, MAX_LINE
,
2441 ASM_COMMENT_START
, " ", "\n");
2442 /* Add a blank line here so it appears in assembler output but not
2444 fprintf (asm_out_file
, "\n");
2449 /* Output something to inform GDB that this compilation was by GCC. Also
2450 serves to tell GDB file consists of bytecodes. */
2451 if (output_bytecode
)
2452 fprintf (asm_out_file
, "bc_gcc2_compiled.:\n");
2455 #ifndef ASM_IDENTIFY_GCC
2456 fprintf (asm_out_file
, "gcc2_compiled.:\n");
2458 ASM_IDENTIFY_GCC (asm_out_file
);
2462 /* Output something to identify which front-end produced this file. */
2463 #ifdef ASM_IDENTIFY_LANGUAGE
2464 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
2467 #ifndef ASM_OUTPUT_SECTION_NAME
2468 if (flag_function_sections
)
2470 warning ("-ffunction-sections not supported for this target.");
2471 flag_function_sections
= 0;
2475 if (flag_function_sections
2476 && (profile_flag
|| profile_block_flag
))
2478 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2479 flag_function_sections
= 0;
2482 if (flag_function_sections
&& write_symbols
!= NO_DEBUG
)
2483 warning ("-ffunction-sections may affect debugging on some targets.");
2485 if (output_bytecode
)
2487 if (profile_flag
|| profile_block_flag
)
2488 error ("profiling not supported in bytecode compilation");
2492 /* ??? Note: There used to be a conditional here
2493 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2494 This was to guarantee separation between gcc_compiled. and
2495 the first function, for the sake of dbx on Suns.
2496 However, having the extra zero here confused the Emacs
2497 code for unexec, and might confuse other programs too.
2498 Therefore, I took out that change.
2499 In future versions we should find another way to solve
2500 that dbx problem. -- rms, 23 May 93. */
2502 /* Don't let the first function fall at the same address
2503 as gcc_compiled., if profiling. */
2504 if (profile_flag
|| profile_block_flag
)
2505 assemble_zeros (UNITS_PER_WORD
);
2508 /* If dbx symbol table desired, initialize writing it
2509 and output the predefined types. */
2510 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2511 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2512 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
2515 #ifdef SDB_DEBUGGING_INFO
2516 if (write_symbols
== SDB_DEBUG
)
2517 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
2520 #ifdef DWARF_DEBUGGING_INFO
2521 if (write_symbols
== DWARF_DEBUG
)
2522 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
2524 #ifdef DWARF2_UNWIND_INFO
2525 if (dwarf2out_do_frame ())
2526 dwarf2out_frame_init ();
2528 #ifdef DWARF2_DEBUGGING_INFO
2529 if (write_symbols
== DWARF2_DEBUG
)
2530 TIMEVAR (symout_time
, dwarf2out_init (asm_out_file
, main_input_filename
));
2533 /* Initialize yet another pass. */
2535 if (!output_bytecode
)
2536 init_final (main_input_filename
);
2537 init_branch_prob (dump_base_name
);
2539 start_time
= get_run_time ();
2541 /* Call the parser, which parses the entire file
2542 (calling rest_of_compilation for each function). */
2544 if (yyparse () != 0)
2546 if (errorcount
== 0)
2547 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
2549 /* In case there were missing closebraces,
2550 get us back to the global binding level. */
2551 while (! global_bindings_p ())
2555 output_func_start_profiler ();
2557 /* Compilation is now finished except for writing
2558 what's left of the symbol table output. */
2560 parse_time
+= get_run_time () - start_time
;
2562 parse_time
-= integration_time
;
2563 parse_time
-= varconst_time
;
2565 globals
= getdecls ();
2567 /* Really define vars that have had only a tentative definition.
2568 Really output inline functions that must actually be callable
2569 and have not been output so far. */
2572 int len
= list_length (globals
);
2573 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
2578 /* Process the decls in reverse order--earliest first.
2579 Put them into VEC from back to front, then take out from front. */
2581 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
2582 vec
[len
- i
- 1] = decl
;
2584 for (i
= 0; i
< len
; i
++)
2588 /* We're not deferring this any longer. */
2589 DECL_DEFER_OUTPUT (decl
) = 0;
2591 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2592 && incomplete_decl_finalize_hook
!= 0)
2593 (*incomplete_decl_finalize_hook
) (decl
);
2596 /* Now emit any global variables or functions that we have been putting
2597 off. We need to loop in case one of the things emitted here
2598 references another one which comes earlier in the list. */
2602 for (i
= 0; i
< len
; i
++)
2606 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
))
2609 /* Don't write out static consts, unless we still need them.
2611 We also keep static consts if not optimizing (for debugging),
2612 unless the user specified -fno-keep-static-consts.
2613 ??? They might be better written into the debug information.
2614 This is possible when using DWARF.
2616 A language processor that wants static constants to be always
2617 written out (even if it is not used) is responsible for
2618 calling rest_of_decl_compilation itself. E.g. the C front-end
2619 calls rest_of_decl_compilation from finish_decl.
2620 One motivation for this is that is conventional in some
2621 environments to write things like:
2622 static const char rcsid[] = "... version string ...";
2623 intending to force the string to be in the executable.
2625 A language processor that would prefer to have unneeded
2626 static constants "optimized away" would just defer writing
2627 them out until here. E.g. C++ does this, because static
2628 constants are often defined in header files.
2630 ??? A tempting alternative (for both C and C++) would be
2631 to force a constant to be written if and only if it is
2632 defined in a main file, as opposed to an include file. */
2634 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2635 && (! TREE_READONLY (decl
)
2636 || TREE_PUBLIC (decl
)
2637 || (!optimize
&& flag_keep_static_consts
)
2638 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2641 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2644 if (TREE_CODE (decl
) == FUNCTION_DECL
2645 && DECL_INITIAL (decl
) != 0
2646 && DECL_SAVED_INSNS (decl
) != 0
2647 && (flag_keep_inline_functions
2648 || TREE_PUBLIC (decl
)
2649 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2652 temporary_allocation ();
2653 output_inline_function (decl
);
2654 permanent_allocation (1);
2659 /* Now that all possible functions have been output, we can dump
2660 the exception table. */
2662 output_exception_table ();
2664 for (i
= 0; i
< len
; i
++)
2668 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2669 && ! TREE_ASM_WRITTEN (decl
))
2670 /* Cancel the RTL for this decl so that, if debugging info
2671 output for global variables is still to come,
2672 this one will be omitted. */
2673 DECL_RTL (decl
) = NULL
;
2675 /* Warn about any function
2676 declared static but not defined.
2677 We don't warn about variables,
2678 because many programs have static variables
2679 that exist only to get some text into the object file. */
2680 if (TREE_CODE (decl
) == FUNCTION_DECL
2682 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2683 && DECL_INITIAL (decl
) == 0
2684 && DECL_EXTERNAL (decl
)
2685 && ! DECL_ARTIFICIAL (decl
)
2686 && ! TREE_PUBLIC (decl
))
2688 pedwarn_with_decl (decl
,
2689 "`%s' declared `static' but never defined");
2690 /* This symbol is effectively an "extern" declaration now. */
2691 TREE_PUBLIC (decl
) = 1;
2692 assemble_external (decl
);
2695 /* Warn about static fns or vars defined but not used,
2696 but not about inline functions or static consts
2697 since defining those in header files is normal practice. */
2699 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2700 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2701 && ! DECL_IN_SYSTEM_HEADER (decl
)
2702 && ! DECL_EXTERNAL (decl
)
2703 && ! TREE_PUBLIC (decl
)
2704 && ! TREE_USED (decl
)
2705 && (TREE_CODE (decl
) == FUNCTION_DECL
|| ! DECL_REGISTER (decl
))
2706 /* The TREE_USED bit for file-scope decls
2707 is kept in the identifier, to handle multiple
2708 external decls in different scopes. */
2709 && ! TREE_USED (DECL_NAME (decl
)))
2710 warning_with_decl (decl
, "`%s' defined but not used");
2712 #ifdef SDB_DEBUGGING_INFO
2713 /* The COFF linker can move initialized global vars to the end.
2714 And that can screw up the symbol ordering.
2715 By putting the symbols in that order to begin with,
2716 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2717 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2718 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2719 && ! DECL_EXTERNAL (decl
)
2720 && DECL_RTL (decl
) != 0)
2721 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2723 /* Output COFF information for non-global
2724 file-scope initialized variables. */
2725 if (write_symbols
== SDB_DEBUG
2726 && TREE_CODE (decl
) == VAR_DECL
2727 && DECL_INITIAL (decl
)
2728 && ! DECL_EXTERNAL (decl
)
2729 && DECL_RTL (decl
) != 0
2730 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2731 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2732 #endif /* SDB_DEBUGGING_INFO */
2733 #ifdef DWARF_DEBUGGING_INFO
2734 /* Output DWARF information for file-scope tentative data object
2735 declarations, file-scope (extern) function declarations (which
2736 had no corresponding body) and file-scope tagged type declarations
2737 and definitions which have not yet been forced out. */
2739 if (write_symbols
== DWARF_DEBUG
2740 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2741 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2743 #ifdef DWARF2_DEBUGGING_INFO
2744 /* Output DWARF2 information for file-scope tentative data object
2745 declarations, file-scope (extern) function declarations (which
2746 had no corresponding body) and file-scope tagged type declarations
2747 and definitions which have not yet been forced out. */
2749 if (write_symbols
== DWARF2_DEBUG
2750 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2751 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2756 /* Write out any pending weak symbol declarations. */
2760 /* Do dbx symbols */
2761 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2762 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2763 TIMEVAR (symout_time
,
2765 dbxout_finish (asm_out_file
, main_input_filename
);
2769 #ifdef DWARF_DEBUGGING_INFO
2770 if (write_symbols
== DWARF_DEBUG
)
2771 TIMEVAR (symout_time
,
2777 #ifdef DWARF2_UNWIND_INFO
2778 if (dwarf2out_do_frame ())
2779 dwarf2out_frame_finish ();
2782 #ifdef DWARF2_DEBUGGING_INFO
2783 if (write_symbols
== DWARF2_DEBUG
)
2784 TIMEVAR (symout_time
,
2786 dwarf2out_finish ();
2790 /* Output some stuff at end of file if nec. */
2792 if (!output_bytecode
)
2794 end_final (dump_base_name
);
2795 end_branch_prob (branch_prob_dump_file
);
2798 ASM_FILE_END (asm_out_file
);
2802 /* Language-specific end of compilation actions. */
2806 if (output_bytecode
)
2807 bc_write_file (asm_out_file
);
2809 /* Close the dump files. */
2811 if (flag_gen_aux_info
)
2813 fclose (aux_info_file
);
2815 unlink (aux_info_file_name
);
2819 fclose (rtl_dump_file
);
2822 fclose (jump_opt_dump_file
);
2825 fclose (addressof_dump_file
);
2828 fclose (cse_dump_file
);
2831 fclose (loop_dump_file
);
2834 fclose (cse2_dump_file
);
2836 if (branch_prob_dump
)
2837 fclose (branch_prob_dump_file
);
2840 fclose (flow_dump_file
);
2844 dump_combine_total_stats (combine_dump_file
);
2845 fclose (combine_dump_file
);
2849 fclose (regmove_dump_file
);
2852 fclose (sched_dump_file
);
2855 fclose (local_reg_dump_file
);
2857 if (global_reg_dump
)
2858 fclose (global_reg_dump_file
);
2861 fclose (sched2_dump_file
);
2864 fclose (jump2_opt_dump_file
);
2867 fclose (dbr_sched_dump_file
);
2871 fclose (stack_reg_dump_file
);
2874 /* Close non-debugging input and output files. Take special care to note
2875 whether fclose returns an error, since the pages might still be on the
2876 buffer chain while the file is open. */
2883 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
2884 fatal_io_error (asm_file_name
);
2886 /* Print the times. */
2890 fprintf (stderr
,"\n");
2891 print_time ("parse", parse_time
);
2893 if (!output_bytecode
)
2895 print_time ("integration", integration_time
);
2896 print_time ("jump", jump_time
);
2897 print_time ("cse", cse_time
);
2898 print_time ("loop", loop_time
);
2899 print_time ("cse2", cse2_time
);
2900 print_time ("branch-prob", branch_prob_time
);
2901 print_time ("flow", flow_time
);
2902 print_time ("combine", combine_time
);
2903 print_time ("regmove", regmove_time
);
2904 print_time ("sched", sched_time
);
2905 print_time ("local-alloc", local_alloc_time
);
2906 print_time ("global-alloc", global_alloc_time
);
2907 print_time ("sched2", sched2_time
);
2908 print_time ("dbranch", dbr_sched_time
);
2909 print_time ("shorten-branch", shorten_branch_time
);
2910 print_time ("stack-reg", stack_reg_time
);
2911 print_time ("final", final_time
);
2912 print_time ("varconst", varconst_time
);
2913 print_time ("symout", symout_time
);
2914 print_time ("dump", dump_time
);
2919 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2920 and TYPE_DECL nodes.
2922 This does nothing for local (non-static) variables.
2923 Otherwise, it sets up the RTL and outputs any assembler code
2924 (label definition, storage allocation and initialization).
2926 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2927 the assembler symbol name to be used. TOP_LEVEL is nonzero
2928 if this declaration is not within a function. */
2931 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
2937 /* Declarations of variables, and of functions defined elsewhere. */
2939 /* The most obvious approach, to put an #ifndef around where
2940 this macro is used, doesn't work since it's inside a macro call. */
2941 #ifndef ASM_FINISH_DECLARE_OBJECT
2942 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2945 /* Forward declarations for nested functions are not "external",
2946 but we need to treat them as if they were. */
2947 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
2948 || TREE_CODE (decl
) == FUNCTION_DECL
)
2949 TIMEVAR (varconst_time
,
2951 make_decl_rtl (decl
, asmspec
, top_level
);
2952 /* Initialized extern variable exists to be replaced
2953 with its value, or represents something that will be
2954 output in another file. */
2955 if (! (TREE_CODE (decl
) == VAR_DECL
2956 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
2957 && DECL_INITIAL (decl
) != 0
2958 && DECL_INITIAL (decl
) != error_mark_node
))
2959 /* Don't output anything
2960 when a tentative file-scope definition is seen.
2961 But at end of compilation, do output code for them. */
2962 if (! (! at_end
&& top_level
2963 && (DECL_INITIAL (decl
) == 0
2964 || DECL_INITIAL (decl
) == error_mark_node
)))
2965 assemble_variable (decl
, top_level
, at_end
, 0);
2966 if (!output_bytecode
2967 && decl
== last_assemble_variable_decl
)
2969 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
2973 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
2975 if (decode_reg_name (asmspec
) >= 0)
2977 DECL_RTL (decl
) = 0;
2978 make_decl_rtl (decl
, asmspec
, top_level
);
2981 error ("invalid register name `%s' for register variable", asmspec
);
2983 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2984 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
2985 && TREE_CODE (decl
) == TYPE_DECL
)
2986 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
2988 #ifdef SDB_DEBUGGING_INFO
2989 else if (write_symbols
== SDB_DEBUG
&& top_level
2990 && TREE_CODE (decl
) == TYPE_DECL
)
2991 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2995 /* Called after finishing a record, union or enumeral type. */
2998 rest_of_type_compilation (type
, toplev
)
3002 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3003 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
3004 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
3006 #ifdef SDB_DEBUGGING_INFO
3007 if (write_symbols
== SDB_DEBUG
)
3008 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
3012 /* This is called from finish_function (within yyparse)
3013 after each top-level definition is parsed.
3014 It is supposed to compile that function or variable
3015 and output the assembler code for it.
3016 After we return, the tree storage is freed. */
3019 rest_of_compilation (decl
)
3023 int start_time
= get_run_time ();
3025 /* Nonzero if we have saved the original DECL_INITIAL of the function,
3026 to be restored after we finish compiling the function
3027 (for use when compiling inline calls to this function). */
3028 tree saved_block_tree
= 0;
3029 /* Likewise, for DECL_ARGUMENTS. */
3030 tree saved_arguments
= 0;
3033 if (output_bytecode
)
3036 /* If we are reconsidering an inline function
3037 at the end of compilation, skip the stuff for making it inline. */
3039 if (DECL_SAVED_INSNS (decl
) == 0)
3044 /* If requested, consider whether to make this function inline. */
3045 if (DECL_INLINE (decl
) || flag_inline_functions
)
3046 TIMEVAR (integration_time
,
3048 lose
= function_cannot_inline_p (decl
);
3049 if (lose
|| ! optimize
)
3051 if (warn_inline
&& DECL_INLINE (decl
))
3052 warning_with_decl (decl
, lose
);
3053 DECL_ABSTRACT_ORIGIN (decl
) = 0;
3054 /* Don't really compile an extern inline function.
3055 If we can't make it inline, pretend
3056 it was only declared. */
3057 if (DECL_EXTERNAL (decl
))
3059 DECL_INITIAL (decl
) = 0;
3060 goto exit_rest_of_compilation
;
3064 /* ??? Note that this has the effect of making it look
3065 like "inline" was specified for a function if we choose
3066 to inline it. This isn't quite right, but it's
3067 probably not worth the trouble to fix. */
3068 inlinable
= DECL_INLINE (decl
) = 1;
3071 insns
= get_insns ();
3073 /* Dump the rtl code if we are dumping rtl. */
3078 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
3079 (*decl_printable_name
) (decl
, 2));
3080 if (DECL_SAVED_INSNS (decl
))
3081 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
3082 print_rtl (rtl_dump_file
, insns
);
3083 fflush (rtl_dump_file
);
3086 /* If we can, defer compiling inlines until EOF.
3087 save_for_inline_copying can be extremely expensive. */
3088 if (inlinable
&& ! decl_function_context (decl
))
3089 DECL_DEFER_OUTPUT (decl
) = 1;
3091 /* If function is inline, and we don't yet know whether to
3092 compile it by itself, defer decision till end of compilation.
3093 finish_compilation will call rest_of_compilation again
3094 for those functions that need to be output. Also defer those
3095 functions that we are supposed to defer. We cannot defer
3096 functions containing nested functions since the nested function
3097 data is in our non-saved obstack. */
3099 /* If this is a nested inline, remove ADDRESSOF now so we can
3100 finish compiling ourselves. Otherwise, wait until EOF.
3101 We have to do this because the purge_addressof transformation
3102 changes the DECL_RTL for many variables, which confuses integrate. */
3105 if (decl_function_context (decl
))
3106 purge_addressof (insns
);
3108 DECL_DEFER_OUTPUT (decl
) = 1;
3111 if (! current_function_contains_functions
3112 && (DECL_DEFER_OUTPUT (decl
)
3113 || (DECL_INLINE (decl
)
3114 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
3115 && ! flag_keep_inline_functions
)
3116 || DECL_EXTERNAL (decl
)))))
3118 DECL_DEFER_OUTPUT (decl
) = 1;
3120 /* If -Wreturn-type, we have to do a bit of compilation.
3121 However, if we just fall through we will call
3122 save_for_inline_copying() which results in excessive
3123 memory use. Instead, we just want to call
3124 jump_optimize() to figure out whether or not we can fall
3125 off the end of the function; we do the minimum amount of
3126 work necessary to make that safe. And, we set optimize
3127 to zero to keep jump_optimize from working too hard. */
3128 if (warn_return_type
)
3130 int saved_optimize
= optimize
;
3132 find_exception_handler_labels ();
3133 jump_optimize (get_insns(), 0, 0, 0);
3134 optimize
= saved_optimize
;
3137 #ifdef DWARF_DEBUGGING_INFO
3138 /* Generate the DWARF info for the "abstract" instance
3139 of a function which we may later generate inlined and/or
3140 out-of-line instances of. */
3141 if (write_symbols
== DWARF_DEBUG
)
3143 set_decl_abstract_flags (decl
, 1);
3144 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3145 set_decl_abstract_flags (decl
, 0);
3148 #ifdef DWARF2_DEBUGGING_INFO
3149 /* Generate the DWARF2 info for the "abstract" instance
3150 of a function which we may later generate inlined and/or
3151 out-of-line instances of. */
3152 if (write_symbols
== DWARF2_DEBUG
)
3154 set_decl_abstract_flags (decl
, 1);
3155 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3156 set_decl_abstract_flags (decl
, 0);
3159 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
3160 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlinable
;
3161 goto exit_rest_of_compilation
;
3164 /* If we have to compile the function now, save its rtl and subdecls
3165 so that its compilation will not affect what others get. */
3166 if (inlinable
|| DECL_DEFER_OUTPUT (decl
))
3168 #ifdef DWARF_DEBUGGING_INFO
3169 /* Generate the DWARF info for the "abstract" instance of
3170 a function which we will generate an out-of-line instance
3171 of almost immediately (and which we may also later generate
3172 various inlined instances of). */
3173 if (write_symbols
== DWARF_DEBUG
)
3175 set_decl_abstract_flags (decl
, 1);
3176 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3177 set_decl_abstract_flags (decl
, 0);
3180 #ifdef DWARF2_DEBUGGING_INFO
3181 /* Generate the DWARF2 info for the "abstract" instance of
3182 a function which we will generate an out-of-line instance
3183 of almost immediately (and which we may also later generate
3184 various inlined instances of). */
3185 if (write_symbols
== DWARF2_DEBUG
)
3187 set_decl_abstract_flags (decl
, 1);
3188 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3189 set_decl_abstract_flags (decl
, 0);
3192 saved_block_tree
= DECL_INITIAL (decl
);
3193 saved_arguments
= DECL_ARGUMENTS (decl
);
3194 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
3195 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl
)) = inlinable
;
3198 /* If specified extern inline but we aren't inlining it, we are
3200 if (DECL_INLINE (decl
) && DECL_EXTERNAL (decl
))
3201 goto exit_rest_of_compilation
;
3204 if (! DECL_DEFER_OUTPUT (decl
))
3205 TREE_ASM_WRITTEN (decl
) = 1;
3207 /* Now that integrate will no longer see our rtl, we need not distinguish
3208 between the return value of this function and the return value of called
3210 rtx_equal_function_value_matters
= 0;
3212 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3213 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
3215 goto exit_rest_of_compilation
;
3218 /* Emit code to get eh context, if needed. */
3222 /* If we are doing position-independent code generation, now
3223 is the time to output special prologues and epilogues.
3224 We do not want to do this earlier, because it just clutters
3225 up inline functions with meaningless insns. */
3230 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3231 Note that that may have been done above, in save_for_inline_copying.
3232 The call to resume_temporary_allocation near the end of this function
3233 goes back to the usual state of affairs. This must be done after
3234 we've built up any unwinders for exception handling, and done
3235 the FINALIZE_PIC work, if necessary. */
3237 rtl_in_current_obstack ();
3239 insns
= get_insns ();
3241 /* Copy any shared structure that should not be shared. */
3243 unshare_all_rtl (insns
);
3245 /* Instantiate all virtual registers. */
3247 instantiate_virtual_regs (current_function_decl
, get_insns ());
3249 /* See if we have allocated stack slots that are not directly addressable.
3250 If so, scan all the insns and create explicit address computation
3251 for all references to such slots. */
3252 /* fixup_stack_slots (); */
3254 /* Find all the EH handlers. */
3255 find_exception_handler_labels ();
3257 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3258 are initialized and to compute whether control can drop off the end
3260 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3261 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3263 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3264 if (rtl_dump_and_exit
|| flag_syntax_only
|| DECL_DEFER_OUTPUT (decl
))
3265 goto exit_rest_of_compilation
;
3267 /* Dump rtl code after jump, if we are doing that. */
3272 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
3273 (*decl_printable_name
) (decl
, 2));
3274 print_rtl (jump_opt_dump_file
, insns
);
3275 fflush (jump_opt_dump_file
);
3278 /* Perform common subexpression elimination.
3279 Nonzero value from `cse_main' means that jumps were simplified
3280 and some code may now be unreachable, so do
3281 jump optimization again. */
3286 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
3287 (*decl_printable_name
) (decl
, 2));
3292 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
3294 if (flag_thread_jumps
)
3295 /* Hacks by tiemann & kenner. */
3296 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
3298 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
3300 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
3302 if (tem
|| optimize
> 1)
3303 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3306 /* Dump rtl code after cse, if we are doing that. */
3311 print_rtl (cse_dump_file
, insns
);
3312 fflush (cse_dump_file
);
3315 purge_addressof (insns
);
3316 reg_scan (insns
, max_reg_num (), 1);
3321 fprintf (addressof_dump_file
, "\n;; Function %s\n\n",
3322 (*decl_printable_name
) (decl
, 2));
3323 print_rtl (addressof_dump_file
, insns
);
3324 fflush (addressof_dump_file
);
3330 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
3331 (*decl_printable_name
) (decl
, 2));
3334 /* Move constant computations out of loops. */
3340 if (flag_rerun_loop_opt
)
3342 /* We only want to perform unrolling once. */
3344 loop_optimize (insns
, loop_dump_file
, 0);
3346 /* The regscan pass may not be necessary, but let's
3347 be safe until we can prove otherwise. */
3348 reg_scan (insns
, max_reg_num (), 1);
3350 loop_optimize (insns
, loop_dump_file
, flag_unroll_loops
);
3354 /* Dump rtl code after loop opt, if we are doing that. */
3359 print_rtl (loop_dump_file
, insns
);
3360 fflush (loop_dump_file
);
3366 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
3367 (*decl_printable_name
) (decl
, 2));
3370 if (optimize
> 0 && flag_rerun_cse_after_loop
)
3372 /* Running another jump optimization pass before the second
3373 cse pass sometimes simplifies the RTL enough to allow
3374 the second CSE pass to do a better job. Jump_optimize can change
3375 max_reg_num so we must rerun reg_scan afterwards.
3376 ??? Rework to not call reg_scan so often. */
3377 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3378 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
3380 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
3381 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
3382 1, cse2_dump_file
));
3384 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
3387 if (optimize
> 0 && flag_thread_jumps
)
3389 /* This pass of jump threading straightens out code
3390 that was kinked by loop optimization. */
3391 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3392 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
3394 /* Dump rtl code after cse, if we are doing that. */
3399 print_rtl (cse2_dump_file
, insns
);
3400 fflush (cse2_dump_file
);
3403 if (branch_prob_dump
)
3406 fprintf (branch_prob_dump_file
, "\n;; Function %s\n\n",
3407 (*decl_printable_name
) (decl
, 2));
3410 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
3411 TIMEVAR (branch_prob_time
,
3413 branch_prob (insns
, branch_prob_dump_file
);
3416 if (branch_prob_dump
)
3419 print_rtl (branch_prob_dump_file
, insns
);
3420 fflush (branch_prob_dump_file
);
3422 /* We are no longer anticipating cse in this function, at least. */
3424 cse_not_expected
= 1;
3426 /* Now we choose between stupid (pcc-like) register allocation
3427 (if we got the -noreg switch and not -opt)
3428 and smart register allocation. */
3430 if (optimize
> 0) /* Stupid allocation probably won't work */
3431 obey_regdecls
= 0; /* if optimizations being done. */
3435 /* Print function header into flow dump now
3436 because doing the flow analysis makes some of the dump. */
3441 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
3442 (*decl_printable_name
) (decl
, 2));
3449 regclass (insns
, max_reg_num ());
3450 stupid_life_analysis (insns
, max_reg_num (),
3456 /* Do control and data flow analysis,
3457 and write some of the results to dump file. */
3459 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
3461 if (warn_uninitialized
)
3463 uninitialized_vars_warning (DECL_INITIAL (decl
));
3464 setjmp_args_warning ();
3468 /* Dump rtl after flow analysis. */
3473 print_rtl_with_bb (flow_dump_file
, insns
);
3474 fflush (flow_dump_file
);
3477 /* If -opt, try combining insns through substitution. */
3480 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
3482 /* Dump rtl code after insn combination. */
3487 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
3488 (*decl_printable_name
) (decl
, 2));
3489 dump_combine_stats (combine_dump_file
);
3490 print_rtl_with_bb (combine_dump_file
, insns
);
3491 fflush (combine_dump_file
);
3497 fprintf (regmove_dump_file
, "\n;; Function %s\n\n",
3498 (*decl_printable_name
) (decl
, 2));
3501 /* Register allocation pre-pass, to reduce number of moves
3502 necessary for two-address machines. */
3503 if (optimize
> 0 && flag_regmove
)
3504 TIMEVAR (regmove_time
, regmove_optimize (insns
, max_reg_num (),
3505 regmove_dump_file
));
3510 print_rtl_with_bb (regmove_dump_file
, insns
);
3511 fflush (regmove_dump_file
);
3514 /* Print function header into sched dump now
3515 because doing the sched analysis makes some of the dump. */
3520 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
3521 (*decl_printable_name
) (decl
, 2));
3524 if (optimize
> 0 && flag_schedule_insns
)
3526 /* Do control and data sched analysis,
3527 and write some of the results to dump file. */
3529 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
3532 /* Dump rtl after instruction scheduling. */
3537 print_rtl_with_bb (sched_dump_file
, insns
);
3538 fflush (sched_dump_file
);
3541 /* Unless we did stupid register allocation,
3542 allocate pseudo-regs that are used only within 1 basic block. */
3545 TIMEVAR (local_alloc_time
,
3547 regclass (insns
, max_reg_num ());
3551 /* Dump rtl code after allocating regs within basic blocks. */
3556 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
3557 (*decl_printable_name
) (decl
, 2));
3558 dump_flow_info (local_reg_dump_file
);
3559 dump_local_alloc (local_reg_dump_file
);
3560 print_rtl_with_bb (local_reg_dump_file
, insns
);
3561 fflush (local_reg_dump_file
);
3564 if (global_reg_dump
)
3566 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
3567 (*decl_printable_name
) (decl
, 2)));
3569 /* Save the last label number used so far, so reorg can tell
3570 when it's safe to kill spill regs. */
3571 max_label_num_after_reload
= max_label_num ();
3573 /* Unless we did stupid register allocation,
3574 allocate remaining pseudo-regs, then do the reload pass
3575 fixing up any insns that are invalid. */
3577 TIMEVAR (global_alloc_time
,
3580 failure
= global_alloc (global_reg_dump_file
);
3582 failure
= reload (insns
, 0, global_reg_dump_file
);
3585 if (global_reg_dump
)
3588 dump_global_regs (global_reg_dump_file
);
3589 print_rtl_with_bb (global_reg_dump_file
, insns
);
3590 fflush (global_reg_dump_file
);
3594 goto exit_rest_of_compilation
;
3596 reload_completed
= 1;
3598 /* Do a very simple CSE pass over just the hard registers. */
3600 reload_cse_regs (insns
);
3602 /* On some machines, the prologue and epilogue code, or parts thereof,
3603 can be represented as RTL. Doing so lets us schedule insns between
3604 it and the rest of the code and also allows delayed branch
3605 scheduling to operate in the epilogue. */
3607 thread_prologue_and_epilogue_insns (insns
);
3609 if (optimize
> 0 && flag_schedule_insns_after_reload
)
3614 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
3615 (*decl_printable_name
) (decl
, 2));
3618 /* Do control and data sched analysis again,
3619 and write some more of the results to dump file. */
3621 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
3623 /* Dump rtl after post-reorder instruction scheduling. */
3628 print_rtl_with_bb (sched2_dump_file
, insns
);
3629 fflush (sched2_dump_file
);
3633 #ifdef LEAF_REGISTERS
3635 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
3639 /* One more attempt to remove jumps to .+1
3640 left by dead-store-elimination.
3641 Also do cross-jumping this time
3642 and delete no-op move insns. */
3646 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
3649 /* Dump rtl code after jump, if we are doing that. */
3654 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
3655 (*decl_printable_name
) (decl
, 2));
3656 print_rtl_with_bb (jump2_opt_dump_file
, insns
);
3657 fflush (jump2_opt_dump_file
);
3660 /* If a machine dependent reorganization is needed, call it. */
3661 #ifdef MACHINE_DEPENDENT_REORG
3662 MACHINE_DEPENDENT_REORG (insns
);
3665 /* If a scheduling pass for delayed branches is to be done,
3666 call the scheduling code. */
3669 if (optimize
> 0 && flag_delayed_branch
)
3671 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
3676 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
3677 (*decl_printable_name
) (decl
, 2));
3678 print_rtl_with_bb (dbr_sched_dump_file
, insns
);
3679 fflush (dbr_sched_dump_file
);
3685 /* Shorten branches. */
3686 TIMEVAR (shorten_branch_time
,
3688 shorten_branches (get_insns ());
3692 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
3697 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
3698 (*decl_printable_name
) (decl
, 2));
3699 print_rtl_with_bb (stack_reg_dump_file
, insns
);
3700 fflush (stack_reg_dump_file
);
3705 /* Now turn the rtl into assembler code. */
3707 TIMEVAR (final_time
,
3712 /* Get the function's name, as described by its RTL.
3713 This may be different from the DECL_NAME name used
3714 in the source file. */
3716 x
= DECL_RTL (decl
);
3717 if (GET_CODE (x
) != MEM
)
3720 if (GET_CODE (x
) != SYMBOL_REF
)
3722 fnname
= XSTR (x
, 0);
3724 assemble_start_function (decl
, fnname
);
3725 final_start_function (insns
, asm_out_file
, optimize
);
3726 final (insns
, asm_out_file
, optimize
, 0);
3727 final_end_function (insns
, asm_out_file
, optimize
);
3728 assemble_end_function (decl
, fnname
);
3729 fflush (asm_out_file
);
3731 /* Release all memory held by regsets now */
3732 regset_release_memory ();
3735 /* Write DBX symbols if requested */
3737 /* Note that for those inline functions where we don't initially
3738 know for certain that we will be generating an out-of-line copy,
3739 the first invocation of this routine (rest_of_compilation) will
3740 skip over this code by doing a `goto exit_rest_of_compilation;'.
3741 Later on, finish_compilation will call rest_of_compilation again
3742 for those inline functions that need to have out-of-line copies
3743 generated. During that call, we *will* be routed past here. */
3745 #ifdef DBX_DEBUGGING_INFO
3746 if (write_symbols
== DBX_DEBUG
)
3747 TIMEVAR (symout_time
, dbxout_function (decl
));
3750 #ifdef DWARF_DEBUGGING_INFO
3751 if (write_symbols
== DWARF_DEBUG
)
3752 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3755 #ifdef DWARF2_DEBUGGING_INFO
3756 if (write_symbols
== DWARF2_DEBUG
)
3757 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3760 exit_rest_of_compilation
:
3762 /* In case the function was not output,
3763 don't leave any temporary anonymous types
3764 queued up for sdb output. */
3765 #ifdef SDB_DEBUGGING_INFO
3766 if (write_symbols
== SDB_DEBUG
)
3767 sdbout_types (NULL_TREE
);
3770 /* Put back the tree of subblocks and list of arguments
3771 from before we copied them.
3772 Code generation and the output of debugging info may have modified
3773 the copy, but the original is unchanged. */
3775 if (saved_block_tree
!= 0)
3777 DECL_INITIAL (decl
) = saved_block_tree
;
3778 DECL_ARGUMENTS (decl
) = saved_arguments
;
3779 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
3782 reload_completed
= 0;
3784 /* Clear out the insn_length contents now that they are no longer valid. */
3785 init_insn_lengths ();
3787 /* Clear out the real_constant_chain before some of the rtx's
3788 it runs through become garbage. */
3790 clear_const_double_mem ();
3792 /* Cancel the effect of rtl_in_current_obstack. */
3794 resume_temporary_allocation ();
3796 /* Show no temporary slots allocated. */
3800 /* The parsing time is all the time spent in yyparse
3801 *except* what is spent in this function. */
3803 parse_time
-= get_run_time () - start_time
;
3806 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3807 Exit code is 35 if can't open files, 34 if fatal error,
3808 33 if had nonfatal errors, else success. */
3811 main (argc
, argv
, envp
)
3818 int flag_print_mem
= 0;
3819 int version_flag
= 0;
3822 /* save in case md file wants to emit args as a comment. */
3826 p
= argv
[0] + strlen (argv
[0]);
3827 while (p
!= argv
[0] && p
[-1] != '/'
3828 #ifdef DIR_SEPARATOR
3829 && p
[-1] != DIR_SEPARATOR
3835 #if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
3836 /* Get rid of any avoidable limit on stack size. */
3840 /* Set the stack limit huge so that alloca does not fail. */
3841 getrlimit (RLIMIT_STACK
, &rlim
);
3842 rlim
.rlim_cur
= rlim
.rlim_max
;
3843 setrlimit (RLIMIT_STACK
, &rlim
);
3847 signal (SIGFPE
, float_signal
);
3850 signal (SIGPIPE
, pipe_closed
);
3853 decl_printable_name
= decl_name
;
3854 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
3856 /* Initialize whether `char' is signed. */
3857 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
3858 #ifdef DEFAULT_SHORT_ENUMS
3859 /* Initialize how much space enums occupy, by default. */
3860 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
3863 /* Scan to see what optimization level has been specified. That will
3864 determine the default value of many flags. */
3865 for (i
= 1; i
< argc
; i
++)
3867 if (!strcmp (argv
[i
], "-O"))
3871 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
3873 /* Handle -O2, -O3, -O69, ... */
3874 char *p
= &argv
[i
][2];
3878 if (! (c
>= '0' && c
<= '9'))
3881 optimize
= atoi (&argv
[i
][2]);
3885 obey_regdecls
= (optimize
== 0);
3890 flag_thread_jumps
= 1;
3892 flag_delayed_branch
= 1;
3894 #ifdef CAN_DEBUG_WITHOUT_FP
3895 flag_omit_frame_pointer
= 1;
3901 flag_cse_follow_jumps
= 1;
3902 flag_cse_skip_blocks
= 1;
3903 flag_expensive_optimizations
= 1;
3904 flag_strength_reduce
= 1;
3905 flag_rerun_cse_after_loop
= 1;
3906 flag_rerun_loop_opt
= 1;
3907 flag_caller_saves
= 1;
3909 #ifdef INSN_SCHEDULING
3910 flag_schedule_insns
= 1;
3911 flag_schedule_insns_after_reload
= 1;
3918 flag_inline_functions
= 1;
3921 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3924 set_target_switch ("");
3926 #ifdef OPTIMIZATION_OPTIONS
3927 /* Allow default optimizations to be specified on a per-machine basis. */
3928 OPTIMIZATION_OPTIONS (optimize
);
3931 /* Initialize register usage now so switches may override. */
3934 for (i
= 1; i
< argc
; i
++)
3937 /* If this is a language-specific option,
3938 decode it in a language-specific way. */
3939 for (j
= 0; lang_options
[j
] != 0; j
++)
3940 if (!strncmp (argv
[i
], lang_options
[j
],
3941 strlen (lang_options
[j
])))
3943 if (lang_options
[j
] != 0)
3944 /* If the option is valid for *some* language,
3945 treat it as valid even if this language doesn't understand it. */
3946 lang_decode_option (argv
[i
]);
3947 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
3949 register char *str
= argv
[i
] + 1;
3954 set_target_switch (&str
[1]);
3955 else if (!strcmp (str
, "dumpbase"))
3957 dump_base_name
= argv
[++i
];
3959 else if (str
[0] == 'd')
3961 register char *p
= &str
[1];
3966 branch_prob_dump
= 1;
3970 global_reg_dump
= 1;
3978 cse_dump
= 1, cse2_dump
= 1;
3984 branch_prob_dump
= 1;
3999 global_reg_dump
= 1;
4020 flag_print_asm_name
= 1;
4044 rtl_dump_and_exit
= 1;
4051 else if (str
[0] == 'f')
4053 register char *p
= &str
[1];
4056 /* Some kind of -f option.
4057 P's value is the option sans `-f'.
4058 Search for it in the table of options. */
4061 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
4064 if (!strcmp (p
, f_options
[j
].string
))
4066 *f_options
[j
].variable
= f_options
[j
].on_value
;
4067 /* A goto here would be cleaner,
4068 but breaks the vax pcc. */
4071 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
4072 && ! strcmp (p
+3, f_options
[j
].string
))
4074 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
4082 #ifdef INSN_SCHEDULING
4083 else if (!strncmp (p
, "sched-verbose-",14))
4084 fix_sched_param("verbose",&p
[14]);
4085 else if (!strncmp (p
, "sched-max-",10))
4086 fix_sched_param("max",&p
[10]);
4087 else if (!strncmp (p
, "sched-inter-max-b-",18))
4088 fix_sched_param("interblock-max-blocks",&p
[18]);
4089 else if (!strncmp (p
, "sched-inter-max-i-",18))
4090 fix_sched_param("interblock-max-insns",&p
[18]);
4093 else if (!strncmp (p
, "fixed-", 6))
4094 fix_register (&p
[6], 1, 1);
4095 else if (!strncmp (p
, "call-used-", 10))
4096 fix_register (&p
[10], 0, 1);
4097 else if (!strncmp (p
, "call-saved-", 11))
4098 fix_register (&p
[11], 0, 0);
4100 error ("Invalid option `%s'", argv
[i
]);
4102 else if (str
[0] == 'O')
4104 register char *p
= str
+1;
4105 while (*p
&& *p
>= '0' && *p
<= '9')
4110 error ("Invalid option `%s'", argv
[i
]);
4112 else if (!strcmp (str
, "pedantic"))
4114 else if (!strcmp (str
, "pedantic-errors"))
4115 flag_pedantic_errors
= pedantic
= 1;
4116 else if (!strcmp (str
, "quiet"))
4118 else if (!strcmp (str
, "version"))
4120 else if (!strcmp (str
, "w"))
4121 inhibit_warnings
= 1;
4122 else if (!strcmp (str
, "W"))
4125 /* We save the value of warn_uninitialized, since if they put
4126 -Wuninitialized on the command line, we need to generate a
4127 warning about not using it without also specifying -O. */
4128 if (warn_uninitialized
!= 1)
4129 warn_uninitialized
= 2;
4131 else if (str
[0] == 'W')
4133 register char *p
= &str
[1];
4136 /* Some kind of -W option.
4137 P's value is the option sans `-W'.
4138 Search for it in the table of options. */
4141 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
4144 if (!strcmp (p
, W_options
[j
].string
))
4146 *W_options
[j
].variable
= W_options
[j
].on_value
;
4147 /* A goto here would be cleaner,
4148 but breaks the vax pcc. */
4151 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
4152 && ! strcmp (p
+3, W_options
[j
].string
))
4154 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
4161 else if (!strncmp (p
, "id-clash-", 9))
4167 if (*endp
>= '0' && *endp
<= '9')
4171 error ("Invalid option `%s'", argv
[i
]);
4176 id_clash_len
= atoi (str
+ 10);
4179 else if (!strncmp (p
, "larger-than-", 12))
4181 char *endp
= p
+ 12;
4185 if (*endp
>= '0' && *endp
<= '9')
4189 error ("Invalid option `%s'", argv
[i
]);
4190 goto larger_than_lose
;
4193 warn_larger_than
= 1;
4194 larger_than_size
= atoi (str
+ 13);
4198 error ("Invalid option `%s'", argv
[i
]);
4200 else if (!strcmp (str
, "p"))
4204 else if (!strcmp (str
, "a"))
4206 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
4207 warning ("`-a' option (basic block profile) not supported");
4209 profile_block_flag
= (profile_block_flag
< 2) ? 1 : 3;
4212 else if (!strcmp (str
, "ax"))
4214 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
4215 warning ("`-ax' option (jump profiling) not supported");
4217 profile_block_flag
= (!profile_block_flag
4218 || profile_block_flag
== 2) ? 2 : 3;
4221 else if (str
[0] == 'g')
4225 /* A lot of code assumes write_symbols == NO_DEBUG if the
4226 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
4227 of what debugging type has been selected). This records the
4228 selected type. It is an error to specify more than one
4230 static enum debug_info_type selected_debug_type
= NO_DEBUG
;
4231 /* Non-zero if debugging format has been explicitly set.
4232 -g and -ggdb don't explicitly set the debugging format so
4233 -gdwarf -g3 is equivalent to -gdwarf3. */
4234 static int type_explicitly_set_p
= 0;
4235 /* Table of supported debugging formats. */
4238 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
4239 constant expression, we use NO_DEBUG in its place. */
4240 enum debug_info_type debug_type
;
4241 int use_extensions_p
;
4242 } *da
, debug_args
[] = {
4243 { "g", NO_DEBUG
, DEFAULT_GDB_EXTENSIONS
},
4244 { "ggdb", NO_DEBUG
, 1 },
4245 #ifdef DBX_DEBUGGING_INFO
4246 { "gstabs", DBX_DEBUG
, 0 },
4247 { "gstabs+", DBX_DEBUG
, 1 },
4249 #ifdef DWARF_DEBUGGING_INFO
4250 { "gdwarf", DWARF_DEBUG
, 0 },
4251 { "gdwarf+", DWARF_DEBUG
, 1 },
4253 #ifdef DWARF2_DEBUGGING_INFO
4254 { "gdwarf-2", DWARF2_DEBUG
, 0 },
4256 #ifdef XCOFF_DEBUGGING_INFO
4257 { "gxcoff", XCOFF_DEBUG
, 0 },
4258 { "gxcoff+", XCOFF_DEBUG
, 1 },
4260 #ifdef SDB_DEBUGGING_INFO
4261 { "gcoff", SDB_DEBUG
, 0 },
4265 /* Indexed by enum debug_info_type. */
4266 static char *debug_type_names
[] = {
4267 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
4270 /* Look up STR in the table. */
4271 for (da
= debug_args
; da
->arg
; da
++)
4273 if (! strncmp (str
, da
->arg
, strlen (da
->arg
)))
4275 enum debug_info_type type
= da
->debug_type
;
4278 p
= str
+ strlen (da
->arg
);
4279 if (*p
&& (*p
< '0' || *p
> '9'))
4283 while (*q
&& (*q
>= '0' && *q
<= '9'))
4288 if (len
> 1 && !strncmp (str
, "gdwarf", len
))
4290 error ("use -gdwarf -g%d for DWARF v1, level %d",
4293 error ("use -gdwarf-2 for DWARF v2");
4297 level
= 2; /* default debugging info level */
4298 if (*q
|| level
> 3)
4300 warning ("invalid debug level specification in option: `-%s'",
4302 /* ??? This error message is incorrect in the case of
4304 warning ("no debugging information will be generated");
4308 if (type
== NO_DEBUG
)
4310 type
= PREFERRED_DEBUGGING_TYPE
;
4311 if (len
> 1 && strncmp (str
, "ggdb", len
) == 0)
4313 #ifdef DWARF2_DEBUGGING_INFO
4314 type
= DWARF2_DEBUG
;
4316 #ifdef DBX_DEBUGGING_INFO
4323 if (type
== NO_DEBUG
)
4324 warning ("`-%s' not supported by this configuration of GCC",
4327 /* Does it conflict with an already selected type? */
4328 if (type_explicitly_set_p
4329 /* -g/-ggdb don't conflict with anything */
4330 && da
->debug_type
!= NO_DEBUG
4331 && type
!= selected_debug_type
)
4332 warning ("`-%s' ignored, conflicts with `-g%s'",
4333 str
, debug_type_names
[(int) selected_debug_type
]);
4336 /* If the format has already been set, -g/-ggdb
4337 only change the debug level. */
4338 if (type_explicitly_set_p
4339 && da
->debug_type
== NO_DEBUG
)
4340 ; /* don't change debugging type */
4343 selected_debug_type
= type
;
4344 type_explicitly_set_p
= da
->debug_type
!= NO_DEBUG
;
4346 write_symbols
= (level
== 0
4348 : selected_debug_type
);
4349 use_gnu_debug_info_extensions
= da
->use_extensions_p
;
4350 debug_info_level
= (enum debug_info_level
) level
;
4356 warning ("`-%s' not supported by this configuration of GCC",
4359 else if (!strcmp (str
, "o"))
4361 asm_file_name
= argv
[++i
];
4363 else if (str
[0] == 'G')
4365 g_switch_set
= TRUE
;
4366 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
4368 else if (!strncmp (str
, "aux-info", 8))
4370 flag_gen_aux_info
= 1;
4371 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
4374 error ("Invalid option `%s'", argv
[i
]);
4376 else if (argv
[i
][0] == '+')
4377 error ("Invalid option `%s'", argv
[i
]);
4382 /* Checker uses the frame pointer. */
4383 if (flag_check_memory_usage
)
4384 flag_omit_frame_pointer
= 0;
4386 /* Initialize for bytecode output. A good idea to do this as soon as
4387 possible after the "-f" options have been parsed. */
4388 if (output_bytecode
)
4390 #ifndef TARGET_SUPPORTS_BYTECODE
4391 /* Just die with a fatal error if not supported */
4392 fatal ("-fbytecode not supported for this target");
4400 /* Inlining does not work if not optimizing,
4401 so force it not to be done. */
4405 /* The c_decode_option and lang_decode_option functions set
4406 this to `2' if -Wall is used, so we can avoid giving out
4407 lots of errors for people who don't realize what -Wall does. */
4408 if (warn_uninitialized
== 1)
4409 warning ("-Wuninitialized is not supported without -O");
4412 #ifdef OVERRIDE_OPTIONS
4413 /* Some machines may reject certain combinations of options. */
4417 if (exceptions_via_longjmp
== 2)
4419 #ifdef DWARF2_UNWIND_INFO
4420 exceptions_via_longjmp
= ! DWARF2_UNWIND_INFO
;
4422 exceptions_via_longjmp
= 1;
4426 if (profile_block_flag
== 3)
4428 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
4429 profile_block_flag
= 2;
4432 /* Unrolling all loops implies that standard loop unrolling must also
4434 if (flag_unroll_all_loops
)
4435 flag_unroll_loops
= 1;
4436 /* Loop unrolling requires that strength_reduction be on also. Silently
4437 turn on strength reduction here if it isn't already on. Also, the loop
4438 unrolling code assumes that cse will be run after loop, so that must
4439 be turned on also. */
4440 if (flag_unroll_loops
)
4442 flag_strength_reduce
= 1;
4443 flag_rerun_cse_after_loop
= 1;
4446 /* Warn about options that are not supported on this machine. */
4447 #ifndef INSN_SCHEDULING
4448 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
4449 warning ("instruction scheduling not supported on this target machine");
4452 if (flag_delayed_branch
)
4453 warning ("this target machine does not have delayed branches");
4456 /* If we are in verbose mode, write out the version and maybe all the
4457 option flags in use. */
4460 print_version (stderr
, "");
4462 print_switch_values (stderr
, 0, MAX_LINE
, "", " ", "\n");
4465 compile_file (filename
);
4467 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN32__))
4470 char *lim
= (char *) sbrk (0);
4472 fprintf (stderr
, "Data size %d.\n",
4473 lim
- (char *) &environ
);
4478 system ("ps -l 1>&2");
4481 #endif /* not USG */
4484 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN32) */
4487 exit (FATAL_EXIT_CODE
);
4489 exit (FATAL_EXIT_CODE
);
4490 exit (SUCCESS_EXIT_CODE
);
4494 /* Decode -m switches. */
4496 /* Here is a table, controlled by the tm.h file, listing each -m switch
4497 and which bits in `target_switches' it should set or clear.
4498 If VALUE is positive, it is bits to set.
4499 If VALUE is negative, -VALUE is bits to clear.
4500 (The sign bit is not used so there is no confusion.) */
4502 struct {char *name
; int value
;} target_switches
[]
4505 /* This table is similar, but allows the switch to have a value. */
4507 #ifdef TARGET_OPTIONS
4508 struct {char *prefix
; char ** variable
;} target_options
[]
4512 /* Decode the switch -mNAME. */
4515 set_target_switch (name
)
4521 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4522 if (!strcmp (target_switches
[j
].name
, name
))
4524 if (target_switches
[j
].value
< 0)
4525 target_flags
&= ~-target_switches
[j
].value
;
4527 target_flags
|= target_switches
[j
].value
;
4531 #ifdef TARGET_OPTIONS
4533 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4535 int len
= strlen (target_options
[j
].prefix
);
4536 if (!strncmp (target_options
[j
].prefix
, name
, len
))
4538 *target_options
[j
].variable
= name
+ len
;
4545 error ("Invalid option `%s'", name
);
4548 /* Print version information to FILE.
4549 Each line begins with INDENT (for the case where FILE is the
4550 assembler output file). */
4553 print_version (file
, indent
)
4557 fprintf (file
, "%s%s%s version %s", indent
, *indent
!= 0 ? " " : "",
4558 language_string
, version_string
);
4559 fprintf (file
, " (%s)", TARGET_NAME
);
4562 #define __VERSION__ "[unknown]"
4564 fprintf (file
, " compiled by GNU C version %s.\n", __VERSION__
);
4566 fprintf (file
, " compiled by CC.\n");
4570 /* Print an option value and return the adjusted position in the line.
4571 ??? We don't handle error returns from fprintf (disk full); presumably
4572 other code will catch a disk full though. */
4575 print_single_switch (file
, pos
, max
, indent
, sep
, term
, type
, name
)
4578 char *indent
, *sep
, *term
, *type
, *name
;
4580 /* The ultrix fprintf returns 0 on success, so compute the result we want
4581 here since we need it for the following test. */
4582 int len
= strlen (sep
) + strlen (type
) + strlen (name
);
4587 fprintf (file
, "%s", term
);
4592 fprintf (file
, "%s", indent
);
4593 pos
= strlen (indent
);
4595 fprintf (file
, "%s%s%s", sep
, type
, name
);
4600 /* Print active target switches to FILE.
4601 POS is the current cursor position and MAX is the size of a "line".
4602 Each line begins with INDENT and ends with TERM.
4603 Each switch is separated from the next by SEP. */
4606 print_switch_values (file
, pos
, max
, indent
, sep
, term
)
4609 char *indent
, *sep
, *term
;
4614 /* Print the options as passed. */
4616 pos
= print_single_switch (file
, pos
, max
, indent
, *indent
? " " : "", term
,
4617 "options passed: ", "");
4619 for (p
= &save_argv
[1]; *p
!= NULL
; p
++)
4623 if (strcmp (*p
, "-o") == 0)
4629 if (strcmp (*p
, "-quiet") == 0)
4631 if (strcmp (*p
, "-version") == 0)
4636 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
, *p
, "");
4639 fprintf (file
, "%s", term
);
4641 /* Print the -f and -m options that have been enabled.
4642 We don't handle language specific options but printing argv
4645 pos
= print_single_switch (file
, 0, max
, indent
, *indent
? " " : "", term
,
4646 "options enabled: ", "");
4648 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
4649 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
4650 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4651 "-f", f_options
[j
].string
);
4653 /* Print target specific options. */
4655 flags
= target_flags
;
4656 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
4657 if (target_switches
[j
].name
[0] != '\0'
4658 && target_switches
[j
].value
> 0
4659 && ((target_switches
[j
].value
& target_flags
)
4660 == target_switches
[j
].value
))
4662 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4663 "-m", target_switches
[j
].name
);
4664 flags
&= ~ target_switches
[j
].value
;
4667 #ifdef TARGET_OPTIONS
4668 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
4669 if (*target_options
[j
].variable
!= NULL
)
4672 sprintf (prefix
, "-m%s", target_options
[j
].prefix
);
4673 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
4674 prefix
, *target_options
[j
].variable
);
4678 fprintf (file
, "%s", term
);
4681 /* Record the beginning of a new source file, named FILENAME. */
4684 debug_start_source_file (filename
)
4685 register char *filename
;
4687 #ifdef DBX_DEBUGGING_INFO
4688 if (write_symbols
== DBX_DEBUG
)
4689 dbxout_start_new_source_file (filename
);
4691 #ifdef DWARF_DEBUGGING_INFO
4692 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4693 && write_symbols
== DWARF_DEBUG
)
4694 dwarfout_start_new_source_file (filename
);
4695 #endif /* DWARF_DEBUGGING_INFO */
4696 #ifdef DWARF2_DEBUGGING_INFO
4697 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4698 && write_symbols
== DWARF2_DEBUG
)
4699 dwarf2out_start_source_file (filename
);
4700 #endif /* DWARF2_DEBUGGING_INFO */
4701 #ifdef SDB_DEBUGGING_INFO
4702 if (write_symbols
== SDB_DEBUG
)
4703 sdbout_start_new_source_file (filename
);
4707 /* Record the resumption of a source file. LINENO is the line number in
4708 the source file we are returning to. */
4711 debug_end_source_file (lineno
)
4712 register unsigned lineno
;
4714 #ifdef DBX_DEBUGGING_INFO
4715 if (write_symbols
== DBX_DEBUG
)
4716 dbxout_resume_previous_source_file ();
4718 #ifdef DWARF_DEBUGGING_INFO
4719 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4720 && write_symbols
== DWARF_DEBUG
)
4721 dwarfout_resume_previous_source_file (lineno
);
4722 #endif /* DWARF_DEBUGGING_INFO */
4723 #ifdef DWARF2_DEBUGGING_INFO
4724 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4725 && write_symbols
== DWARF2_DEBUG
)
4726 dwarf2out_end_source_file ();
4727 #endif /* DWARF2_DEBUGGING_INFO */
4728 #ifdef SDB_DEBUGGING_INFO
4729 if (write_symbols
== SDB_DEBUG
)
4730 sdbout_resume_previous_source_file ();
4734 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4735 the tail part of the directive line, i.e. the part which is past the
4736 initial whitespace, #, whitespace, directive-name, whitespace part. */
4739 debug_define (lineno
, buffer
)
4740 register unsigned lineno
;
4741 register char *buffer
;
4743 #ifdef DWARF_DEBUGGING_INFO
4744 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4745 && write_symbols
== DWARF_DEBUG
)
4746 dwarfout_define (lineno
, buffer
);
4747 #endif /* DWARF_DEBUGGING_INFO */
4748 #ifdef DWARF2_DEBUGGING_INFO
4749 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4750 && write_symbols
== DWARF2_DEBUG
)
4751 dwarf2out_define (lineno
, buffer
);
4752 #endif /* DWARF2_DEBUGGING_INFO */
4755 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
4756 the tail part of the directive line, i.e. the part which is past the
4757 initial whitespace, #, whitespace, directive-name, whitespace part. */
4760 debug_undef (lineno
, buffer
)
4761 register unsigned lineno
;
4762 register char *buffer
;
4764 #ifdef DWARF_DEBUGGING_INFO
4765 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4766 && write_symbols
== DWARF_DEBUG
)
4767 dwarfout_undef (lineno
, buffer
);
4768 #endif /* DWARF_DEBUGGING_INFO */
4769 #ifdef DWARF2_DEBUGGING_INFO
4770 if (debug_info_level
== DINFO_LEVEL_VERBOSE
4771 && write_symbols
== DWARF2_DEBUG
)
4772 dwarf2out_undef (lineno
, buffer
);
4773 #endif /* DWARF2_DEBUGGING_INFO */