1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* This is the top level of cc1/c++.
22 It parses command args, opens files, invokes the various passes
23 in the proper order, and counts the time used by each.
24 Error messages and low-level interface to malloc also handled here. */
35 #include <sys/types.h>
42 #include <sys/param.h>
43 /* This is for hpux. It is a real screw. They should change hpux. */
45 #include <sys/times.h>
46 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
47 #undef FFS /* Some systems define this in param.h. */
51 #include <sys/resource.h>
60 #include "insn-attr.h"
66 #ifdef XCOFF_DEBUGGING_INFO
71 /* The extra parameters substantially improve the I/O performance. */
73 vms_fopen (fname, type)
77 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
78 fixed arguments, which matches ANSI's specification but not VAXCRTL's
79 pre-ANSI implementation. This hack circumvents the mismatch problem. */
80 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
83 return (*vmslib_fopen) (fname, type, "mbc=32",
84 "deq=64", "fop=tef", "shr=nil");
86 return (*vmslib_fopen) (fname, type, "mbc=32");
88 #define fopen vms_fopen
91 #ifndef DEFAULT_GDB_EXTENSIONS
92 #define DEFAULT_GDB_EXTENSIONS 1
95 extern int rtx_equal_function_value_matters;
97 #if ! (defined (VMS) || defined (OS2))
98 extern char **environ;
100 extern char *version_string, *language_string;
102 /* Carry information from ASM_DECLARE_OBJECT_NAME
103 to ASM_FINISH_DECLARE_OBJECT. */
105 extern int size_directive_output;
106 extern tree last_assemble_variable_decl;
108 extern void init_lex ();
109 extern void init_decl_processing ();
110 extern void init_obstacks ();
111 extern void init_tree_codes ();
112 extern void init_rtl ();
113 extern void init_regs ();
114 extern void init_optabs ();
115 extern void init_stmt ();
116 extern void init_reg_sets ();
117 extern void dump_flow_info ();
118 extern void dump_sched_info ();
119 extern void dump_local_alloc ();
121 void rest_of_decl_compilation ();
122 void error_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
123 void error_with_decl PVPROTO((tree decl, char *s, ...));
124 void error_for_asm PVPROTO((rtx insn, char *s, ...));
125 void error PVPROTO((char *s, ...));
126 void fatal PVPROTO((char *s, ...));
127 void warning_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
128 void warning_with_decl PVPROTO((tree decl, char *s, ...));
129 void warning_for_asm PVPROTO((rtx insn, char *s, ...));
130 void warning PVPROTO((char *s, ...));
131 void pedwarn PVPROTO((char *s, ...));
132 void pedwarn_with_decl PVPROTO((tree decl, char *s, ...));
133 void pedwarn_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
134 void sorry PVPROTO((char *s, ...));
135 void really_sorry PVPROTO((char *s, ...));
140 void set_target_switch ();
141 static void print_switch_values ();
142 static char *decl_name ();
145 extern char *sbrk ();
148 /* Name of program invoked, sans directories. */
152 /* Copy of arguments to main. */
156 /* Name of current original source file (what was input to cpp).
157 This comes from each #-command in the actual input. */
159 char *input_filename;
161 /* Name of top-level original source file (what was input to cpp).
162 This comes from the #-command at the beginning of the actual input.
163 If there isn't any there, then this is the cc1 input file name. */
165 char *main_input_filename;
167 /* Stream for reading from the input file. */
171 /* Current line number in real source file. */
175 /* Stack of currently pending input files. */
177 struct file_stack *input_file_stack;
179 /* Incremented on each change to input_file_stack. */
180 int input_file_stack_tick;
182 /* FUNCTION_DECL for function now being parsed or compiled. */
184 extern tree current_function_decl;
186 /* Name to use as base of names for dump output files. */
188 char *dump_base_name;
190 /* Bit flags that specify the machine subtype we are compiling for.
191 Bits are tested using macros TARGET_... defined in the tm.h file
192 and set by `-m...' switches. Must be defined in rtlanal.c. */
194 extern int target_flags;
196 /* Flags saying which kinds of debugging dump have been requested. */
199 int rtl_dump_and_exit = 0;
200 int jump_opt_dump = 0;
205 int combine_dump = 0;
207 int local_reg_dump = 0;
208 int global_reg_dump = 0;
210 int jump2_opt_dump = 0;
211 int dbr_sched_dump = 0;
212 int flag_print_asm_name = 0;
213 int stack_reg_dump = 0;
215 /* Name for output file of assembly code, specified with -o. */
219 /* Value of the -G xx switch, and whether it was passed or not. */
223 /* Type(s) of debugging information we are producing (if any).
224 See flags.h for the definitions of the different possible
225 types of debugging information. */
226 enum debug_info_type write_symbols = NO_DEBUG;
228 /* Level of debugging information we are producing. See flags.h
229 for the definitions of the different possible levels. */
230 enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
232 /* Nonzero means use GNU-only extensions in the generated symbolic
233 debugging information. */
234 /* Currently, this only has an effect when write_symbols is set to
235 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
236 int use_gnu_debug_info_extensions = 0;
238 /* Nonzero means do optimizations. -O.
239 Particular numeric values stand for particular amounts of optimization;
240 thus, -O2 stores 2 here. However, the optimizations beyond the basic
241 ones are not controlled directly by this variable. Instead, they are
242 controlled by individual `flag_...' variables that are defaulted
243 based on this variable. */
247 /* Number of error messages and warning messages so far. */
250 int warningcount = 0;
253 /* Flag to output bytecode instead of native assembler */
254 int output_bytecode = 0;
256 /* Pointer to function to compute the name to use to print a declaration. */
258 char *(*decl_printable_name) ();
260 /* Pointer to function to compute rtl for a language-specific tree code. */
262 struct rtx_def *(*lang_expand_expr) ();
264 /* Pointer to function to finish handling an incomplete decl at the
265 end of compilation. */
267 void (*incomplete_decl_finalize_hook) () = 0;
269 /* Pointer to function for interim exception handling implementation.
270 This interface will change, and it is only here until a better interface
273 void (*interim_eh_hook) PROTO((tree));
275 /* Nonzero if generating code to do profiling. */
277 int profile_flag = 0;
279 /* Nonzero if generating code to do profiling on a line-by-line basis. */
281 int profile_block_flag;
283 /* Nonzero for -pedantic switch: warn about anything
284 that standard spec forbids. */
288 /* Temporarily suppress certain warnings.
289 This is set while reading code from a system header file. */
291 int in_system_header = 0;
293 /* Nonzero means do stupid register allocation.
294 Currently, this is 1 if `optimize' is 0. */
296 int obey_regdecls = 0;
298 /* Don't print functions as they are compiled and don't print
299 times taken by the various passes. -quiet. */
305 /* Nonzero means `char' should be signed. */
307 int flag_signed_char;
309 /* Nonzero means give an enum type only as many bytes as it needs. */
311 int flag_short_enums;
313 /* Nonzero for -fcaller-saves: allocate values in regs that need to
314 be saved across function calls, if that produces overall better code.
315 Optional now, so people can test it. */
317 #ifdef DEFAULT_CALLER_SAVES
318 int flag_caller_saves = 1;
320 int flag_caller_saves = 0;
323 /* Nonzero if structures and unions should be returned in memory.
325 This should only be defined if compatibility with another compiler or
326 with an ABI is needed, because it results in slower code. */
328 #ifndef DEFAULT_PCC_STRUCT_RETURN
329 #define DEFAULT_PCC_STRUCT_RETURN 1
332 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
334 int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
336 /* Nonzero for -fforce-mem: load memory value into a register
337 before arithmetic on it. This makes better cse but slower compilation. */
339 int flag_force_mem = 0;
341 /* Nonzero for -fforce-addr: load memory address into a register before
342 reference to memory. This makes better cse but slower compilation. */
344 int flag_force_addr = 0;
346 /* Nonzero for -fdefer-pop: don't pop args after each function call;
347 instead save them up to pop many calls' args with one insns. */
349 int flag_defer_pop = 0;
351 /* Nonzero for -ffloat-store: don't allocate floats and doubles
352 in extended-precision registers. */
354 int flag_float_store = 0;
356 /* Nonzero for -fcse-follow-jumps:
357 have cse follow jumps to do a more extensive job. */
359 int flag_cse_follow_jumps;
361 /* Nonzero for -fcse-skip-blocks:
362 have cse follow a branch around a block. */
363 int flag_cse_skip_blocks;
365 /* Nonzero for -fexpensive-optimizations:
366 perform miscellaneous relatively-expensive optimizations. */
367 int flag_expensive_optimizations;
369 /* Nonzero for -fthread-jumps:
370 have jump optimize output of loop. */
372 int flag_thread_jumps;
374 /* Nonzero enables strength-reduction in loop.c. */
376 int flag_strength_reduce = 0;
378 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
379 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
380 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
383 int flag_unroll_loops;
385 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
386 This is generally not a win. */
388 int flag_unroll_all_loops;
390 /* Nonzero for -fwritable-strings:
391 store string constants in data segment and don't uniquize them. */
393 int flag_writable_strings = 0;
395 /* Nonzero means don't put addresses of constant functions in registers.
396 Used for compiling the Unix kernel, where strange substitutions are
397 done on the assembly output. */
399 int flag_no_function_cse = 0;
401 /* Nonzero for -fomit-frame-pointer:
402 don't make a frame pointer in simple functions that don't require one. */
404 int flag_omit_frame_pointer = 0;
406 /* Nonzero to inhibit use of define_optimization peephole opts. */
408 int flag_no_peephole = 0;
410 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
411 operations in the interest of optimization. For example it allows
412 GCC to assume arguments to sqrt are nonnegative numbers, allowing
413 faster code for sqrt to be generated. */
415 int flag_fast_math = 0;
417 /* Nonzero means all references through pointers are volatile. */
421 /* Nonzero means treat all global and extern variables as global. */
423 int flag_volatile_global;
425 /* Nonzero means just do syntax checking; don't output anything. */
427 int flag_syntax_only = 0;
429 /* Nonzero means to rerun cse after loop optimization. This increases
430 compilation time about 20% and picks up a few more common expressions. */
432 static int flag_rerun_cse_after_loop;
434 /* Nonzero for -finline-functions: ok to inline functions that look like
435 good inline candidates. */
437 int flag_inline_functions;
439 /* Nonzero for -fkeep-inline-functions: even if we make a function
440 go inline everywhere, keep its definition around for debugging
443 int flag_keep_inline_functions;
445 /* Nonzero means that functions will not be inlined. */
449 /* Nonzero means we should be saving declaration info into a .X file. */
451 int flag_gen_aux_info = 0;
453 /* Specified name of aux-info file. */
455 static char *aux_info_file_name;
457 /* Nonzero means make the text shared if supported. */
459 int flag_shared_data;
461 /* Nonzero means schedule into delayed branch slots if supported. */
463 int flag_delayed_branch;
465 /* Nonzero means to run cleanups after CALL_EXPRs. */
467 int flag_short_temps;
469 /* Nonzero if we are compiling pure (sharable) code.
470 Value is 1 if we are doing reasonable (i.e. simple
471 offset into offset table) pic. Value is 2 if we can
472 only perform register offsets. */
476 /* Nonzero means place uninitialized global data in the bss section. */
480 /* Nonzero means pretend it is OK to examine bits of target floats,
481 even if that isn't true. The resulting code will have incorrect constants,
482 but the same series of instructions that the native compiler would make. */
484 int flag_pretend_float;
486 /* Nonzero means change certain warnings into errors.
487 Usually these are warnings about failure to conform to some standard. */
489 int flag_pedantic_errors = 0;
491 /* flag_schedule_insns means schedule insns within basic blocks (before
493 flag_schedule_insns_after_reload means schedule insns after
496 int flag_schedule_insns = 0;
497 int flag_schedule_insns_after_reload = 0;
499 /* -finhibit-size-directive inhibits output of .size for ELF.
500 This is used only for compiling crtstuff.c,
501 and it may be extended to other effects
502 needed for crtstuff.c on other systems. */
503 int flag_inhibit_size_directive = 0;
505 /* -fverbose-asm causes extra commentary information to be produced in
506 the generated assembly code (to make it more readable). This option
507 is generally only of use to those who actually need to read the
508 generated assembly code (perhaps while debugging the compiler itself). */
510 int flag_verbose_asm = 0;
512 /* -fgnu-linker specifies use of the GNU linker for initializations.
513 (Or, more generally, a linker that handles initializations.)
514 -fno-gnu-linker says that collect2 will be used. */
516 int flag_gnu_linker = 0;
518 int flag_gnu_linker = 1;
521 /* Tag all structures with __attribute__(packed) */
522 int flag_pack_struct = 0;
524 /* Table of language-independent -f options.
525 STRING is the option name. VARIABLE is the address of the variable.
526 ON_VALUE is the value to store in VARIABLE
527 if `-fSTRING' is seen as an option.
528 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
530 struct { char *string; int *variable; int on_value;} f_options[] =
532 {"float-store", &flag_float_store, 1},
533 {"volatile", &flag_volatile, 1},
534 {"volatile-global", &flag_volatile_global, 1},
535 {"defer-pop", &flag_defer_pop, 1},
536 {"omit-frame-pointer", &flag_omit_frame_pointer, 1},
537 {"cse-follow-jumps", &flag_cse_follow_jumps, 1},
538 {"cse-skip-blocks", &flag_cse_skip_blocks, 1},
539 {"expensive-optimizations", &flag_expensive_optimizations, 1},
540 {"thread-jumps", &flag_thread_jumps, 1},
541 {"strength-reduce", &flag_strength_reduce, 1},
542 {"unroll-loops", &flag_unroll_loops, 1},
543 {"unroll-all-loops", &flag_unroll_all_loops, 1},
544 {"writable-strings", &flag_writable_strings, 1},
545 {"peephole", &flag_no_peephole, 0},
546 {"force-mem", &flag_force_mem, 1},
547 {"force-addr", &flag_force_addr, 1},
548 {"function-cse", &flag_no_function_cse, 0},
549 {"inline-functions", &flag_inline_functions, 1},
550 {"keep-inline-functions", &flag_keep_inline_functions, 1},
551 {"inline", &flag_no_inline, 0},
552 {"syntax-only", &flag_syntax_only, 1},
553 {"shared-data", &flag_shared_data, 1},
554 {"caller-saves", &flag_caller_saves, 1},
555 {"pcc-struct-return", &flag_pcc_struct_return, 1},
556 {"reg-struct-return", &flag_pcc_struct_return, 0},
557 {"delayed-branch", &flag_delayed_branch, 1},
558 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1},
559 {"pretend-float", &flag_pretend_float, 1},
560 {"schedule-insns", &flag_schedule_insns, 1},
561 {"schedule-insns2", &flag_schedule_insns_after_reload, 1},
562 {"pic", &flag_pic, 1},
563 {"PIC", &flag_pic, 2},
564 {"fast-math", &flag_fast_math, 1},
565 {"common", &flag_no_common, 0},
566 {"inhibit-size-directive", &flag_inhibit_size_directive, 1},
567 {"verbose-asm", &flag_verbose_asm, 1},
568 {"gnu-linker", &flag_gnu_linker, 1},
569 {"pack-struct", &flag_pack_struct, 1},
570 {"bytecode", &output_bytecode, 1}
573 /* Table of language-specific options. */
575 char *lang_options[] =
578 "-fallow-single-precision",
580 "-fsigned-bitfields",
581 "-funsigned-bitfields",
582 "-fno-signed-bitfields",
583 "-fno-unsigned-bitfields",
587 "-fno-unsigned-char",
599 "-fno-cond-mismatch",
600 "-fdollars-in-identifiers",
601 "-fno-dollars-in-identifiers",
610 "-Wbad-function-cast",
611 "-Wno-bad-function-cast",
615 "-Wno-char-subscripts",
629 "-Wno-missing-braces",
630 "-Wmissing-declarations",
631 "-Wno-missing-declarations",
632 "-Wmissing-prototypes",
633 "-Wno-missing-prototypes",
635 "-Wno-nested-externs",
639 "-Wno-pointer-arith",
641 "-Wno-redundant-decls",
642 "-Wstrict-prototypes",
643 "-Wno-strict-prototypes",
649 "-Wno-write-strings",
651 /* these are for obj c */
667 /* Options controlling warnings */
669 /* Don't print warning messages. -w. */
671 int inhibit_warnings = 0;
673 /* Print various extra warnings. -W. */
675 int extra_warnings = 0;
677 /* Treat warnings as errors. -Werror. */
679 int warnings_are_errors = 0;
681 /* Nonzero to warn about unused local variables. */
685 /* Nonzero to warn about variables used before they are initialized. */
687 int warn_uninitialized;
689 /* Nonzero means warn about all declarations which shadow others. */
693 /* Warn if a switch on an enum fails to have a case for every enum value. */
697 /* Nonzero means warn about function definitions that default the return type
698 or that use a null return and have a return-type other than void. */
700 int warn_return_type;
702 /* Nonzero means warn about pointer casts that increase the required
703 alignment of the target type (and might therefore lead to a crash
704 due to a misaligned access). */
708 /* Nonzero means warn about any identifiers that match in the first N
709 characters. The value N is in `id_clash_len'. */
712 unsigned id_clash_len;
714 /* Nonzero means warn about any objects definitions whose size is larger
715 than N bytes. Also want about function definitions whose returned
716 values are larger than N bytes. The value N is in `larger_than_size'. */
718 int warn_larger_than;
719 unsigned larger_than_size;
721 /* Nonzero means warn if inline function is too large. */
725 /* Warn if a function returns an aggregate,
726 since there are often incompatible calling conventions for doing this. */
728 int warn_aggregate_return;
730 /* Likewise for -W. */
732 struct { char *string; int *variable; int on_value;} W_options[] =
734 {"unused", &warn_unused, 1},
735 {"error", &warnings_are_errors, 1},
736 {"shadow", &warn_shadow, 1},
737 {"switch", &warn_switch, 1},
738 {"aggregate-return", &warn_aggregate_return, 1},
739 {"cast-align", &warn_cast_align, 1},
740 {"uninitialized", &warn_uninitialized, 1},
741 {"inline", &warn_inline, 1}
744 /* Output files for assembler code (real compiler output)
745 and debugging dumps. */
750 FILE *jump_opt_dump_file;
752 FILE *loop_dump_file;
753 FILE *cse2_dump_file;
754 FILE *flow_dump_file;
755 FILE *combine_dump_file;
756 FILE *sched_dump_file;
757 FILE *local_reg_dump_file;
758 FILE *global_reg_dump_file;
759 FILE *sched2_dump_file;
760 FILE *jump2_opt_dump_file;
761 FILE *dbr_sched_dump_file;
762 FILE *stack_reg_dump_file;
764 /* Time accumulators, to count the total time spent in various passes. */
768 int integration_time;
776 int local_alloc_time;
777 int global_alloc_time;
780 int shorten_branch_time;
786 /* Return time used so far, in microseconds. */
796 struct rusage rusage;
801 int proc_system_time;
803 int child_system_time;
815 return (clock() * 1000);
816 #else /* not _WIN32 */
819 return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
822 getrusage (0, &rusage);
823 return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
824 + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
827 return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
833 #define TIMEVAR(VAR, BODY) \
834 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
837 print_time (str, total)
842 "time in %s: %d.%06d\n",
843 str, total / 1000000, total % 1000000);
846 /* Count an error or warning. Return 1 if the message should be printed. */
849 count_error (warningp)
852 if (warningp && inhibit_warnings)
855 if (warningp && !warnings_are_errors)
859 static int warning_message = 0;
861 if (warningp && !warning_message)
863 fprintf (stderr, "%s: warnings being treated as errors\n", progname);
872 /* Print a fatal error message. NAME is the text.
873 Also include a system error message based on `errno'. */
876 pfatal_with_name (name)
879 fprintf (stderr, "%s: ", progname);
881 exit (FATAL_EXIT_CODE);
885 fatal_io_error (name)
888 fprintf (stderr, "%s: %s: I/O error\n", progname, name);
889 exit (FATAL_EXIT_CODE);
892 /* Called to give a better error message for a bad insn rather than
893 just calling abort(). */
896 fatal_insn (message, insn)
900 if (!output_bytecode)
906 fflush (asm_out_file);
908 fflush (aux_info_file);
910 fflush (rtl_dump_file);
911 if (jump_opt_dump_file)
912 fflush (jump_opt_dump_file);
914 fflush (cse_dump_file);
916 fflush (loop_dump_file);
918 fflush (cse2_dump_file);
920 fflush (flow_dump_file);
921 if (combine_dump_file)
922 fflush (combine_dump_file);
924 fflush (sched_dump_file);
925 if (local_reg_dump_file)
926 fflush (local_reg_dump_file);
927 if (global_reg_dump_file)
928 fflush (global_reg_dump_file);
929 if (sched2_dump_file)
930 fflush (sched2_dump_file);
931 if (jump2_opt_dump_file)
932 fflush (jump2_opt_dump_file);
933 if (dbr_sched_dump_file)
934 fflush (dbr_sched_dump_file);
935 if (stack_reg_dump_file)
936 fflush (stack_reg_dump_file);
940 /* Called to give a better error message when we don't have an insn to match
941 what we are looking for or if the insn's constraints aren't satisfied,
942 rather than just calling abort(). */
945 fatal_insn_not_found (insn)
948 if (INSN_CODE (insn) < 0)
949 fatal_insn ("internal error--unrecognizable insn:", insn);
951 fatal_insn ("internal error--insn does not satisfy its constraints:", insn);
954 /* This is the default decl_printable_name function. */
957 decl_name (decl, kind)
961 return IDENTIFIER_POINTER (DECL_NAME (decl));
964 /* This is the default interim_eh_hook function. */
967 interim_eh (finalization)
970 /* Don't do anything by default. */
973 static int need_error_newline;
975 /* Function of last error message;
976 more generally, function such that if next error message is in it
977 then we don't have to mention the function name. */
978 static tree last_error_function = NULL;
980 /* Used to detect when input_file_stack has changed since last described. */
981 static int last_error_tick;
983 /* Called when the start of a function definition is parsed,
984 this function prints on stderr the name of the function. */
987 announce_function (decl)
993 if (rtl_dump_and_exit)
994 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
996 fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk));
998 need_error_newline = 1;
999 last_error_function = current_function_decl;
1003 /* The default function to print out name of current function that caused
1007 default_print_error_function (file)
1010 if (last_error_function != current_function_decl)
1012 char *kind = "function";
1013 if (current_function_decl != 0
1014 && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
1018 fprintf (stderr, "%s: ", file);
1020 if (current_function_decl == NULL)
1021 fprintf (stderr, "At top level:\n");
1024 char *name = (*decl_printable_name) (current_function_decl, &kind);
1025 fprintf (stderr, "In %s `%s':\n", kind, name);
1028 last_error_function = current_function_decl;
1032 /* Called by report_error_function to print out function name.
1033 * Default may be overridden by language front-ends. */
1035 void (*print_error_function) PROTO((char*)) = default_print_error_function;
1037 /* Prints out, if necessary, the name of the current function
1038 that caused an error. Called from all error and warning functions. */
1041 report_error_function (file)
1044 struct file_stack *p;
1046 if (need_error_newline)
1048 fprintf (stderr, "\n");
1049 need_error_newline = 0;
1052 (*print_error_function) (file);
1054 if (input_file_stack && input_file_stack->next != 0
1055 && input_file_stack_tick != last_error_tick
1056 && file == input_filename)
1058 fprintf (stderr, "In file included");
1059 for (p = input_file_stack->next; p; p = p->next)
1061 fprintf (stderr, " from %s:%d", p->name, p->line);
1063 fprintf (stderr, ",\n ");
1065 fprintf (stderr, ":\n");
1066 last_error_tick = input_file_stack_tick;
1070 /* Print a message. */
1073 vmessage (prefix, s, ap)
1079 fprintf (stderr, "%s: ", prefix);
1082 vfprintf (stderr, s, ap);
1085 HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT);
1086 HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT);
1087 HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT);
1088 HOST_WIDE_INT v4 = va_arg(ap, HOST_WIDE_INT);
1089 fprintf (stderr, s, v1, v2, v3, v4);
1094 /* Print a message relevant to line LINE of file FILE. */
1097 v_message_with_file_and_line (file, line, prefix, s, ap)
1105 fprintf (stderr, "%s:%d: ", file, line);
1107 fprintf (stderr, "%s: ", progname);
1109 vmessage (prefix, s, ap);
1110 fputc ('\n', stderr);
1113 /* Print a message relevant to the given DECL. */
1116 v_message_with_decl (decl, prefix, s, ap)
1124 fprintf (stderr, "%s:%d: ",
1125 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
1128 fprintf (stderr, "%s: ", prefix);
1130 /* Do magic to get around lack of varargs support for insertion
1131 of arguments into existing list. We know that the decl is first;
1132 we ass_u_me that it will be printed with "%s". */
1134 for (p = s; *p; ++p)
1138 if (*(p + 1) == '%')
1145 if (p > s) /* Print the left-hand substring. */
1147 char fmt[sizeof "%.255s"];
1150 if (width > 255L) width = 255L; /* arbitrary */
1151 sprintf (fmt, "%%.%lds", width);
1152 fprintf (stderr, fmt, s);
1155 if (*p == '%') /* Print the name. */
1157 char *n = (DECL_NAME (decl)
1158 ? (*decl_printable_name) (decl, &junk)
1164 if (isalpha (*(p - 1) & 0xFF))
1169 if (*p) /* Print the rest of the message. */
1170 vmessage ((char *)NULL, p, ap);
1172 fputc ('\n', stderr);
1175 /* Figure file and line of the given INSN. */
1178 file_and_line_for_asm (insn, pfile, pline)
1183 rtx body = PATTERN (insn);
1186 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1187 if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
1188 asmop = SET_SRC (body);
1189 else if (GET_CODE (body) == ASM_OPERANDS)
1191 else if (GET_CODE (body) == PARALLEL
1192 && GET_CODE (XVECEXP (body, 0, 0)) == SET)
1193 asmop = SET_SRC (XVECEXP (body, 0, 0));
1194 else if (GET_CODE (body) == PARALLEL
1195 && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
1196 asmop = XVECEXP (body, 0, 0);
1202 *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
1203 *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
1207 *pfile = input_filename;
1212 /* Report an error at line LINE of file FILE. */
1215 v_error_with_file_and_line (file, line, s, ap)
1222 report_error_function (file);
1223 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1227 error_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1239 file = va_arg (ap, char *);
1240 line = va_arg (ap, int);
1241 s = va_arg (ap, char *);
1244 v_error_with_file_and_line (file, line, s, ap);
1248 /* Report an error at the declaration DECL.
1249 S is a format string which uses %s to substitute the declaration
1250 name; subsequent substitutions are a la printf. */
1253 v_error_with_decl (decl, s, ap)
1259 report_error_function (DECL_SOURCE_FILE (decl));
1260 v_message_with_decl (decl, (char *)NULL, s, ap);
1264 error_with_decl VPROTO((tree decl, char *s, ...))
1275 decl = va_arg (ap, tree);
1276 s = va_arg (ap, char *);
1279 v_error_with_decl (decl, s, ap);
1283 /* Report an error at the line number of the insn INSN.
1284 This is used only when INSN is an `asm' with operands,
1285 and each ASM_OPERANDS records its own source file and line. */
1288 v_error_for_asm (insn, s, ap)
1297 file_and_line_for_asm (insn, &file, &line);
1298 report_error_function (file);
1299 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1303 error_for_asm VPROTO((rtx insn, char *s, ...))
1314 insn = va_arg (ap, rtx);
1315 s = va_arg (ap, char *);
1318 v_error_for_asm (insn, s, ap);
1322 /* Report an error at the current line number. */
1329 v_error_with_file_and_line (input_filename, lineno, s, ap);
1333 error VPROTO((char *s, ...))
1343 s = va_arg (ap, char *);
1350 /* Report a fatal error at the current line number. */
1358 exit (FATAL_EXIT_CODE);
1362 fatal VPROTO((char *s, ...))
1372 s = va_arg (ap, char *);
1379 /* Report a warning at line LINE of file FILE. */
1382 v_warning_with_file_and_line (file, line, s, ap)
1388 if (count_error (1))
1390 report_error_function (file);
1391 v_message_with_file_and_line (file, line, "warning", s, ap);
1396 warning_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1408 file = va_arg (ap, char *);
1409 line = va_arg (ap, int);
1410 s = va_arg (ap, char *);
1413 v_warning_with_file_and_line (file, line, s, ap);
1417 /* Report a warning at the declaration DECL.
1418 S is a format string which uses %s to substitute the declaration
1419 name; subsequent substitutions are a la printf. */
1422 v_warning_with_decl (decl, s, ap)
1427 if (count_error (1))
1429 report_error_function (DECL_SOURCE_FILE (decl));
1430 v_message_with_decl (decl, "warning", s, ap);
1435 warning_with_decl VPROTO((tree decl, char *s, ...))
1446 decl = va_arg (ap, tree);
1447 s = va_arg (ap, char *);
1450 v_warning_with_decl (decl, s, ap);
1454 /* Report a warning at the line number of the insn INSN.
1455 This is used only when INSN is an `asm' with operands,
1456 and each ASM_OPERANDS records its own source file and line. */
1459 v_warning_for_asm (insn, s, ap)
1464 if (count_error (1))
1469 file_and_line_for_asm (insn, &file, &line);
1470 report_error_function (file);
1471 v_message_with_file_and_line (file, line, "warning", s, ap);
1476 warning_for_asm VPROTO((rtx insn, char *s, ...))
1487 insn = va_arg (ap, rtx);
1488 s = va_arg (ap, char *);
1491 v_warning_for_asm (insn, s, ap);
1495 /* Report a warning at the current line number. */
1502 v_warning_with_file_and_line (input_filename, lineno, s, ap);
1506 warning VPROTO((char *s, ...))
1516 s = va_arg (ap, char *);
1523 /* These functions issue either warnings or errors depending on
1524 -pedantic-errors. */
1531 if (flag_pedantic_errors)
1538 pedwarn VPROTO((char *s, ...))
1548 s = va_arg (ap, char *);
1556 v_pedwarn_with_decl (decl, s, ap)
1561 /* We don't want -pedantic-errors to cause the compilation to fail from
1562 "errors" in system header files. Sometimes fixincludes can't fix what's
1563 broken (eg: unsigned char bitfields - fixing it may change the alignment
1564 which will cause programs to mysteriously fail because the C library
1565 or kernel uses the original layout). There's no point in issuing a
1566 warning either, it's just unnecessary noise. */
1568 if (! DECL_IN_SYSTEM_HEADER (decl))
1570 if (flag_pedantic_errors)
1571 v_error_with_decl (decl, s, ap);
1573 v_warning_with_decl (decl, s, ap);
1578 pedwarn_with_decl VPROTO((tree decl, char *s, ...))
1589 decl = va_arg (ap, tree);
1590 s = va_arg (ap, char *);
1593 v_pedwarn_with_decl (decl, s, ap);
1598 v_pedwarn_with_file_and_line (file, line, s, ap)
1604 if (flag_pedantic_errors)
1605 v_error_with_file_and_line (file, line, s, ap);
1607 v_warning_with_file_and_line (file, line, s, ap);
1611 pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1623 file = va_arg (ap, char *);
1624 line = va_arg (ap, int);
1625 s = va_arg (ap, char *);
1628 v_pedwarn_with_file_and_line (file, line, s, ap);
1632 /* Apologize for not implementing some feature. */
1641 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1643 fprintf (stderr, "%s: ", progname);
1644 vmessage ("sorry, not implemented", s, ap);
1645 fputc ('\n', stderr);
1649 sorry VPROTO((char *s, ...))
1659 s = va_arg (ap, char *);
1666 /* Apologize for not implementing some feature, then quit. */
1669 v_really_sorry (s, ap)
1675 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1677 fprintf (stderr, "%s: ", progname);
1678 vmessage ("sorry, not implemented", s, ap);
1679 fatal (" (fatal)\n");
1683 really_sorry VPROTO((char *s, ...))
1693 s = va_arg (ap, char *);
1696 v_really_sorry (s, ap);
1700 /* More 'friendly' abort that prints the line and file.
1701 config.h can #define abort fancy_abort if you like that sort of thing.
1703 I don't think this is actually a good idea.
1704 Other sorts of crashes will look a certain way.
1705 It is a good thing if crashes from calling abort look the same way.
1711 fatal ("internal gcc abort");
1714 /* This calls abort and is used to avoid problems when abort if a macro.
1715 It is used when we need to pass the address of abort. */
1723 /* When `malloc.c' is compiled with `rcheck' defined,
1724 it calls this function to report clobberage. */
1732 /* Same as `malloc' but report error if no memory available. */
1738 register char *value = (char *) malloc (size);
1740 fatal ("virtual memory exhausted");
1744 /* Same as `realloc' but report error if no memory available. */
1747 xrealloc (ptr, size)
1751 char *result = (char *) realloc (ptr, size);
1753 fatal ("virtual memory exhausted");
1757 /* Return the logarithm of X, base 2, considering X unsigned,
1758 if X is a power of 2. Otherwise, returns -1.
1760 This should be used via the `exact_log2' macro. */
1764 register unsigned HOST_WIDE_INT x;
1766 register int log = 0;
1767 /* Test for 0 or a power of 2. */
1768 if (x == 0 || x != (x & -x))
1770 while ((x >>= 1) != 0)
1775 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1776 If X is 0, return -1.
1778 This should be used via the floor_log2 macro. */
1782 register unsigned HOST_WIDE_INT x;
1784 register int log = -1;
1792 jmp_buf float_handler;
1794 /* Specify where to longjmp to when a floating arithmetic error happens.
1795 If HANDLER is 0, it means don't handle the errors any more. */
1798 set_float_handler (handler)
1801 float_handled = (handler != 0);
1803 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1806 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1807 error happens, pushing the previous specification into OLD_HANDLER.
1808 Return an indication of whether there was a previous handler in effect. */
1811 push_float_handler (handler, old_handler)
1812 jmp_buf handler, old_handler;
1814 int was_handled = float_handled;
1818 bcopy ((char *) float_handler, (char *) old_handler,
1819 sizeof (float_handler));
1821 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1825 /* Restore the previous specification of whether and where to longjmp to
1826 when a floating arithmetic error happens. */
1829 pop_float_handler (handled, handler)
1833 float_handled = handled;
1835 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1838 /* Signals actually come here. */
1841 float_signal (signo)
1842 /* If this is missing, some compilers complain. */
1845 if (float_handled == 0)
1847 #if defined (USG) || defined (hpux)
1848 signal (SIGFPE, float_signal); /* re-enable the signal catcher */
1851 signal (SIGFPE, float_signal);
1852 longjmp (float_handler, 1);
1855 /* Handler for SIGPIPE. */
1859 /* If this is missing, some compilers complain. */
1862 fatal ("output pipe has been closed");
1865 /* Strip off a legitimate source ending from the input string NAME of
1866 length LEN. Rather than having to know the names used by all of
1867 our front ends, we strip off an ending of a period followed by one,
1868 two, or three characters. */
1871 strip_off_ending (name, len)
1875 if (len > 2 && name[len - 2] == '.')
1876 name[len - 2] = '\0';
1877 else if (len > 3 && name[len - 3] == '.')
1878 name[len - 3] = '\0';
1879 else if (len > 4 && name[len - 4] == '.')
1880 name[len - 4] = '\0';
1883 /* Output a quoted string. */
1885 output_quoted_string (asm_file, string)
1891 putc ('\"', asm_file);
1892 while ((c = *string++) != 0)
1894 if (c == '\"' || c == '\\')
1895 putc ('\\', asm_file);
1898 putc ('\"', asm_file);
1901 /* Output a file name in the form wanted by System V. */
1904 output_file_directive (asm_file, input_name)
1908 int len = strlen (input_name);
1909 char *na = input_name + len;
1911 /* NA gets INPUT_NAME sans directory names. */
1912 while (na > input_name)
1919 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1920 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
1922 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1923 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
1925 fprintf (asm_file, "\t.file\t");
1926 output_quoted_string (asm_file, na);
1927 fputc ('\n', asm_file);
1932 /* Routine to build language identifier for object file. */
1934 output_lang_identify (asm_out_file)
1937 int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
1938 char *s = (char *) alloca (len);
1939 sprintf (s, "__gnu_compiled_%s", lang_identify ());
1940 ASM_OUTPUT_LABEL (asm_out_file, s);
1943 /* Routine to open a dump file. */
1945 open_dump_file (base_name, suffix)
1950 char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1);
1952 strcpy (dumpname, base_name);
1953 strcat (dumpname, suffix);
1954 f = fopen (dumpname, "w");
1956 pfatal_with_name (dumpname);
1960 /* Compile an entire file of output from cpp, named NAME.
1961 Write a file of assembly output and various debugging dumps. */
1970 int name_specified = name != 0;
1972 if (dump_base_name == 0)
1973 dump_base_name = name ? name : "gccdump";
1977 integration_time = 0;
1985 local_alloc_time = 0;
1986 global_alloc_time = 0;
1989 shorten_branch_time = 0;
1995 /* Open input file. */
1997 if (name == 0 || !strcmp (name, "-"))
2003 finput = fopen (name, "r");
2005 pfatal_with_name (name);
2007 #ifdef IO_BUFFER_SIZE
2008 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE);
2011 /* Initialize data in various passes. */
2016 /* Some of these really don't need to be called when generating bytecode,
2017 but the options would have to be parsed first to know that. -bson */
2019 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
2020 || debug_info_level == DINFO_LEVEL_VERBOSE);
2022 init_decl_processing ();
2030 if (flag_caller_saves)
2031 init_caller_save ();
2033 /* If auxiliary info generation is desired, open the output file.
2034 This goes in the same directory as the source file--unlike
2035 all the other output files. */
2036 if (flag_gen_aux_info)
2038 aux_info_file = fopen (aux_info_file_name, "w");
2039 if (aux_info_file == 0)
2040 pfatal_with_name (aux_info_file_name);
2043 /* If rtl dump desired, open the output file. */
2045 rtl_dump_file = open_dump_file (dump_base_name, ".rtl");
2047 /* If jump_opt dump desired, open the output file. */
2049 jump_opt_dump_file = open_dump_file (dump_base_name, ".jump");
2051 /* If cse dump desired, open the output file. */
2053 cse_dump_file = open_dump_file (dump_base_name, ".cse");
2055 /* If loop dump desired, open the output file. */
2057 loop_dump_file = open_dump_file (dump_base_name, ".loop");
2059 /* If cse2 dump desired, open the output file. */
2061 cse2_dump_file = open_dump_file (dump_base_name, ".cse2");
2063 /* If flow dump desired, open the output file. */
2065 flow_dump_file = open_dump_file (dump_base_name, ".flow");
2067 /* If combine dump desired, open the output file. */
2069 combine_dump_file = open_dump_file (dump_base_name, ".combine");
2071 /* If scheduling dump desired, open the output file. */
2073 sched_dump_file = open_dump_file (dump_base_name, ".sched");
2075 /* If local_reg dump desired, open the output file. */
2077 local_reg_dump_file = open_dump_file (dump_base_name, ".lreg");
2079 /* If global_reg dump desired, open the output file. */
2080 if (global_reg_dump)
2081 global_reg_dump_file = open_dump_file (dump_base_name, ".greg");
2083 /* If 2nd scheduling dump desired, open the output file. */
2085 sched2_dump_file = open_dump_file (dump_base_name, ".sched2");
2087 /* If jump2_opt dump desired, open the output file. */
2089 jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2");
2091 /* If dbr_sched dump desired, open the output file. */
2093 dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr");
2097 /* If stack_reg dump desired, open the output file. */
2099 stack_reg_dump_file = open_dump_file (dump_base_name, ".stack");
2103 /* Open assembler code output file. */
2105 if (! name_specified && asm_file_name == 0)
2106 asm_out_file = stdout;
2109 int len = strlen (dump_base_name);
2110 register char *dumpname = (char *) xmalloc (len + 6);
2111 strcpy (dumpname, dump_base_name);
2112 strip_off_ending (dumpname, len);
2113 strcat (dumpname, ".s");
2114 if (asm_file_name == 0)
2116 asm_file_name = (char *) xmalloc (strlen (dumpname) + 1);
2117 strcpy (asm_file_name, dumpname);
2119 if (!strcmp (asm_file_name, "-"))
2120 asm_out_file = stdout;
2122 asm_out_file = fopen (asm_file_name, "w");
2123 if (asm_out_file == 0)
2124 pfatal_with_name (asm_file_name);
2127 #ifdef IO_BUFFER_SIZE
2128 setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
2129 _IOFBF, IO_BUFFER_SIZE);
2132 input_filename = name;
2134 /* Put an entry on the input file stack for the main input file. */
2136 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
2137 input_file_stack->next = 0;
2138 input_file_stack->name = input_filename;
2140 /* Perform language-specific initialization.
2141 This may set main_input_filename. */
2144 /* If the input doesn't start with a #line, use the input name
2145 as the official input file name. */
2146 if (main_input_filename == 0)
2147 main_input_filename = name;
2149 if (!output_bytecode)
2151 ASM_FILE_START (asm_out_file);
2154 /* Output something to inform GDB that this compilation was by GCC. Also
2155 serves to tell GDB file consists of bytecodes. */
2156 if (output_bytecode)
2157 fprintf (asm_out_file, "bc_gcc2_compiled.:\n");
2160 #ifndef ASM_IDENTIFY_GCC
2161 fprintf (asm_out_file, "gcc2_compiled.:\n");
2163 ASM_IDENTIFY_GCC (asm_out_file);
2167 /* Output something to identify which front-end produced this file. */
2168 #ifdef ASM_IDENTIFY_LANGUAGE
2169 ASM_IDENTIFY_LANGUAGE (asm_out_file);
2172 if (output_bytecode)
2174 if (profile_flag || profile_block_flag)
2175 error ("profiling not supported in bytecode compilation");
2179 /* ??? Note: There used to be a conditional here
2180 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2181 This was to guarantee separation between gcc_compiled. and
2182 the first function, for the sake of dbx on Suns.
2183 However, having the extra zero here confused the Emacs
2184 code for unexec, and might confuse other programs too.
2185 Therefore, I took out that change.
2186 In future versions we should find another way to solve
2187 that dbx problem. -- rms, 23 May 93. */
2189 /* Don't let the first function fall at the same address
2190 as gcc_compiled., if profiling. */
2191 if (profile_flag || profile_block_flag)
2192 assemble_zeros (UNITS_PER_WORD);
2195 /* If dbx symbol table desired, initialize writing it
2196 and output the predefined types. */
2197 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2198 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2199 TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
2202 #ifdef SDB_DEBUGGING_INFO
2203 if (write_symbols == SDB_DEBUG)
2204 TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
2207 #ifdef DWARF_DEBUGGING_INFO
2208 if (write_symbols == DWARF_DEBUG)
2209 TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
2212 /* Initialize yet another pass. */
2214 if (!output_bytecode)
2215 init_final (main_input_filename);
2217 start_time = get_run_time ();
2219 /* Call the parser, which parses the entire file
2220 (calling rest_of_compilation for each function). */
2222 if (yyparse () != 0)
2224 if (errorcount == 0)
2225 fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)");
2227 /* In case there were missing closebraces,
2228 get us back to the global binding level. */
2229 while (! global_bindings_p ())
2233 /* Compilation is now finished except for writing
2234 what's left of the symbol table output. */
2236 parse_time += get_run_time () - start_time;
2238 parse_time -= integration_time;
2239 parse_time -= varconst_time;
2241 globals = getdecls ();
2243 /* Really define vars that have had only a tentative definition.
2244 Really output inline functions that must actually be callable
2245 and have not been output so far. */
2248 int len = list_length (globals);
2249 tree *vec = (tree *) alloca (sizeof (tree) * len);
2254 /* Process the decls in reverse order--earliest first.
2255 Put them into VEC from back to front, then take out from front. */
2257 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
2258 vec[len - i - 1] = decl;
2260 for (i = 0; i < len; i++)
2264 /* We're not deferring this any longer. */
2265 DECL_DEFER_OUTPUT (decl) = 0;
2267 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
2268 && incomplete_decl_finalize_hook != 0)
2269 (*incomplete_decl_finalize_hook) (decl);
2272 /* Now emit any global variables or functions that we have been putting
2273 off. We need to loop in case one of the things emitted here
2274 references another one which comes earlier in the list. */
2278 for (i = 0; i < len; i++)
2282 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
2285 /* Don't write out static consts, unless we still need them.
2287 We also keep static consts if not optimizing (for debugging).
2288 ??? They might be better written into the debug information.
2289 This is possible when using DWARF.
2291 A language processor that wants static constants to be always
2292 written out (even if it is not used) is responsible for
2293 calling rest_of_decl_compilation itself. E.g. the C front-end
2294 calls rest_of_decl_compilation from finish_decl.
2295 One motivation for this is that is conventional in some
2296 environments to write things like:
2297 static const char rcsid[] = "... version string ...";
2298 intending to force the string to be in the executable.
2300 A language processor that would prefer to have unneeded
2301 static constants "optimized away" would just defer writing
2302 them out until here. E.g. C++ does this, because static
2303 constants are often defined in header files.
2305 ??? A tempting alternative (for both C and C++) would be
2306 to force a constant to be written if and only if it is
2307 defined in a main file, as opposed to an include file. */
2309 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2310 && (! TREE_READONLY (decl)
2311 || TREE_PUBLIC (decl)
2313 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2316 rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
2319 if (TREE_CODE (decl) == FUNCTION_DECL
2320 && DECL_INITIAL (decl) != 0
2321 && DECL_SAVED_INSNS (decl) != 0
2322 && (flag_keep_inline_functions
2323 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2326 temporary_allocation ();
2327 output_inline_function (decl);
2328 permanent_allocation (1);
2333 for (i = 0; i < len; i++)
2337 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2338 && ! TREE_ASM_WRITTEN (decl))
2339 /* Cancel the RTL for this decl so that, if debugging info
2340 output for global variables is still to come,
2341 this one will be omitted. */
2342 DECL_RTL (decl) = NULL;
2344 /* Warn about any function
2345 declared static but not defined.
2346 We don't warn about variables,
2347 because many programs have static variables
2348 that exist only to get some text into the object file. */
2349 if (TREE_CODE (decl) == FUNCTION_DECL
2351 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
2352 && DECL_INITIAL (decl) == 0
2353 && DECL_EXTERNAL (decl)
2354 && ! TREE_PUBLIC (decl))
2356 pedwarn_with_decl (decl,
2357 "`%s' declared `static' but never defined");
2358 /* This symbol is effectively an "extern" declaration now. */
2359 TREE_PUBLIC (decl) = 1;
2360 assemble_external (decl);
2363 /* Warn about static fns or vars defined but not used,
2364 but not about inline functions or static consts
2365 since defining those in header files is normal practice. */
2367 && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
2368 || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
2369 && ! DECL_IN_SYSTEM_HEADER (decl)
2370 && ! DECL_EXTERNAL (decl)
2371 && ! TREE_PUBLIC (decl)
2372 && ! TREE_USED (decl)
2373 && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
2374 /* The TREE_USED bit for file-scope decls
2375 is kept in the identifier, to handle multiple
2376 external decls in different scopes. */
2377 && ! TREE_USED (DECL_NAME (decl)))
2378 warning_with_decl (decl, "`%s' defined but not used");
2380 #ifdef SDB_DEBUGGING_INFO
2381 /* The COFF linker can move initialized global vars to the end.
2382 And that can screw up the symbol ordering.
2383 By putting the symbols in that order to begin with,
2384 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2385 if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
2386 && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
2387 && ! DECL_EXTERNAL (decl)
2388 && DECL_RTL (decl) != 0)
2389 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2391 /* Output COFF information for non-global
2392 file-scope initialized variables. */
2393 if (write_symbols == SDB_DEBUG
2394 && TREE_CODE (decl) == VAR_DECL
2395 && DECL_INITIAL (decl)
2396 && ! DECL_EXTERNAL (decl)
2397 && DECL_RTL (decl) != 0
2398 && GET_CODE (DECL_RTL (decl)) == MEM)
2399 TIMEVAR (symout_time, sdbout_toplevel_data (decl));
2400 #endif /* SDB_DEBUGGING_INFO */
2401 #ifdef DWARF_DEBUGGING_INFO
2402 /* Output DWARF information for file-scope tentative data object
2403 declarations, file-scope (extern) function declarations (which
2404 had no corresponding body) and file-scope tagged type declarations
2405 and definitions which have not yet been forced out. */
2407 if (write_symbols == DWARF_DEBUG
2408 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
2409 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
2414 /* Write out any pending weak symbol declarations. */
2418 /* Do dbx symbols */
2419 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2420 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2421 TIMEVAR (symout_time,
2423 dbxout_finish (asm_out_file, main_input_filename);
2427 #ifdef DWARF_DEBUGGING_INFO
2428 if (write_symbols == DWARF_DEBUG)
2429 TIMEVAR (symout_time,
2435 /* Output some stuff at end of file if nec. */
2437 if (!output_bytecode)
2439 end_final (main_input_filename);
2442 ASM_FILE_END (asm_out_file);
2446 /* Language-specific end of compilation actions. */
2450 if (output_bytecode)
2451 bc_write_file (asm_out_file);
2453 /* Close the dump files. */
2455 if (flag_gen_aux_info)
2457 fclose (aux_info_file);
2459 unlink (aux_info_file_name);
2463 fclose (rtl_dump_file);
2466 fclose (jump_opt_dump_file);
2469 fclose (cse_dump_file);
2472 fclose (loop_dump_file);
2475 fclose (cse2_dump_file);
2478 fclose (flow_dump_file);
2482 dump_combine_total_stats (combine_dump_file);
2483 fclose (combine_dump_file);
2487 fclose (sched_dump_file);
2490 fclose (local_reg_dump_file);
2492 if (global_reg_dump)
2493 fclose (global_reg_dump_file);
2496 fclose (sched2_dump_file);
2499 fclose (jump2_opt_dump_file);
2502 fclose (dbr_sched_dump_file);
2506 fclose (stack_reg_dump_file);
2509 /* Close non-debugging input and output files. Take special care to note
2510 whether fclose returns an error, since the pages might still be on the
2511 buffer chain while the file is open. */
2514 if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)
2515 fatal_io_error (asm_file_name);
2517 /* Print the times. */
2521 fprintf (stderr,"\n");
2522 print_time ("parse", parse_time);
2524 if (!output_bytecode)
2526 print_time ("integration", integration_time);
2527 print_time ("jump", jump_time);
2528 print_time ("cse", cse_time);
2529 print_time ("loop", loop_time);
2530 print_time ("cse2", cse2_time);
2531 print_time ("flow", flow_time);
2532 print_time ("combine", combine_time);
2533 print_time ("sched", sched_time);
2534 print_time ("local-alloc", local_alloc_time);
2535 print_time ("global-alloc", global_alloc_time);
2536 print_time ("sched2", sched2_time);
2537 print_time ("dbranch", dbr_sched_time);
2538 print_time ("shorten-branch", shorten_branch_time);
2539 print_time ("stack-reg", stack_reg_time);
2540 print_time ("final", final_time);
2541 print_time ("varconst", varconst_time);
2542 print_time ("symout", symout_time);
2543 print_time ("dump", dump_time);
2548 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2549 and TYPE_DECL nodes.
2551 This does nothing for local (non-static) variables.
2552 Otherwise, it sets up the RTL and outputs any assembler code
2553 (label definition, storage allocation and initialization).
2555 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2556 the assembler symbol name to be used. TOP_LEVEL is nonzero
2557 if this declaration is not within a function. */
2560 rest_of_decl_compilation (decl, asmspec, top_level, at_end)
2566 /* Declarations of variables, and of functions defined elsewhere. */
2568 /* The most obvious approach, to put an #ifndef around where
2569 this macro is used, doesn't work since it's inside a macro call. */
2570 #ifndef ASM_FINISH_DECLARE_OBJECT
2571 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2574 /* Forward declarations for nested functions are not "external",
2575 but we need to treat them as if they were. */
2576 if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
2577 || TREE_CODE (decl) == FUNCTION_DECL)
2578 TIMEVAR (varconst_time,
2580 make_decl_rtl (decl, asmspec, top_level);
2581 /* Initialized extern variable exists to be replaced
2582 with its value, or represents something that will be
2583 output in another file. */
2584 if (! (TREE_CODE (decl) == VAR_DECL
2585 && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
2586 && DECL_INITIAL (decl) != 0
2587 && DECL_INITIAL (decl) != error_mark_node))
2588 /* Don't output anything
2589 when a tentative file-scope definition is seen.
2590 But at end of compilation, do output code for them. */
2591 if (! (! at_end && top_level
2592 && (DECL_INITIAL (decl) == 0
2593 || DECL_INITIAL (decl) == error_mark_node)))
2594 assemble_variable (decl, top_level, at_end, 0);
2595 if (decl == last_assemble_variable_decl)
2597 ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
2601 else if (DECL_REGISTER (decl) && asmspec != 0)
2603 if (decode_reg_name (asmspec) >= 0)
2605 DECL_RTL (decl) = 0;
2606 make_decl_rtl (decl, asmspec, top_level);
2609 error ("invalid register name `%s' for register variable", asmspec);
2611 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2612 else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2613 && TREE_CODE (decl) == TYPE_DECL)
2614 TIMEVAR (symout_time, dbxout_symbol (decl, 0));
2616 #ifdef SDB_DEBUGGING_INFO
2617 else if (write_symbols == SDB_DEBUG && top_level
2618 && TREE_CODE (decl) == TYPE_DECL)
2619 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2623 /* Called after finishing a record, union or enumeral type. */
2626 rest_of_type_compilation (type, toplev)
2630 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2631 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2632 TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
2634 #ifdef SDB_DEBUGGING_INFO
2635 if (write_symbols == SDB_DEBUG)
2636 TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
2640 /* This is called from finish_function (within yyparse)
2641 after each top-level definition is parsed.
2642 It is supposed to compile that function or variable
2643 and output the assembler code for it.
2644 After we return, the tree storage is freed. */
2647 rest_of_compilation (decl)
2651 int start_time = get_run_time ();
2653 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2654 to be restored after we finish compiling the function
2655 (for use when compiling inline calls to this function). */
2656 tree saved_block_tree = 0;
2657 /* Likewise, for DECL_ARGUMENTS. */
2658 tree saved_arguments = 0;
2661 if (output_bytecode)
2664 /* If we are reconsidering an inline function
2665 at the end of compilation, skip the stuff for making it inline. */
2667 if (DECL_SAVED_INSNS (decl) == 0)
2669 int specd = DECL_INLINE (decl);
2672 /* If requested, consider whether to make this function inline. */
2673 if (specd || flag_inline_functions)
2674 TIMEVAR (integration_time,
2676 lose = function_cannot_inline_p (decl);
2677 /* If not optimizing, then make sure the DECL_INLINE
2679 if (lose || ! optimize)
2681 if (warn_inline && specd)
2682 warning_with_decl (decl, lose);
2683 DECL_INLINE (decl) = 0;
2684 DECL_ABSTRACT_ORIGIN (decl) = 0;
2685 /* Don't really compile an extern inline function.
2686 If we can't make it inline, pretend
2687 it was only declared. */
2688 if (DECL_EXTERNAL (decl))
2690 DECL_INITIAL (decl) = 0;
2691 goto exit_rest_of_compilation;
2695 DECL_INLINE (decl) = 1;
2698 insns = get_insns ();
2700 /* Dump the rtl code if we are dumping rtl. */
2705 fprintf (rtl_dump_file, "\n;; Function %s\n\n",
2706 IDENTIFIER_POINTER (DECL_NAME (decl)));
2707 if (DECL_SAVED_INSNS (decl))
2708 fprintf (rtl_dump_file, ";; (integrable)\n\n");
2709 print_rtl (rtl_dump_file, insns);
2710 fflush (rtl_dump_file);
2713 /* If function is inline, and we don't yet know whether to
2714 compile it by itself, defer decision till end of compilation.
2715 finish_compilation will call rest_of_compilation again
2716 for those functions that need to be output. Also defer those
2717 functions that we are supposed to defer. We cannot defer
2718 functions containing nested functions since the nested function
2719 data is in our non-saved obstack. */
2721 if (! current_function_contains_functions
2722 && (DECL_DEFER_OUTPUT (decl)
2723 || ((specd || DECL_INLINE (decl))
2724 && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
2725 && ! flag_keep_inline_functions)
2726 || DECL_EXTERNAL (decl)))))
2728 DECL_DEFER_OUTPUT (decl) = 1;
2730 /* If -Wreturn-type, we have to do a bit of compilation. */
2731 if (! warn_return_type)
2733 #ifdef DWARF_DEBUGGING_INFO
2734 /* Generate the DWARF info for the "abstract" instance
2735 of a function which we may later generate inlined and/or
2736 out-of-line instances of. */
2737 if (write_symbols == DWARF_DEBUG)
2739 set_decl_abstract_flags (decl, 1);
2740 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2741 set_decl_abstract_flags (decl, 0);
2744 TIMEVAR (integration_time, save_for_inline_nocopy (decl));
2745 goto exit_rest_of_compilation;
2749 /* If we have to compile the function now, save its rtl and subdecls
2750 so that its compilation will not affect what others get. */
2751 if (DECL_INLINE (decl) || DECL_DEFER_OUTPUT (decl))
2753 #ifdef DWARF_DEBUGGING_INFO
2754 /* Generate the DWARF info for the "abstract" instance of
2755 a function which we will generate an out-of-line instance
2756 of almost immediately (and which we may also later generate
2757 various inlined instances of). */
2758 if (write_symbols == DWARF_DEBUG)
2760 set_decl_abstract_flags (decl, 1);
2761 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2762 set_decl_abstract_flags (decl, 0);
2765 saved_block_tree = DECL_INITIAL (decl);
2766 saved_arguments = DECL_ARGUMENTS (decl);
2767 TIMEVAR (integration_time, save_for_inline_copying (decl));
2770 /* If specified extern inline but we aren't inlining it, we are
2772 if (specd && DECL_EXTERNAL (decl))
2773 goto exit_rest_of_compilation;
2776 if (! DECL_DEFER_OUTPUT (decl))
2777 TREE_ASM_WRITTEN (decl) = 1;
2779 /* Now that integrate will no longer see our rtl, we need not distinguish
2780 between the return value of this function and the return value of called
2782 rtx_equal_function_value_matters = 0;
2784 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
2785 if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
2787 goto exit_rest_of_compilation;
2790 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2791 Note that that may have been done above, in save_for_inline_copying.
2792 The call to resume_temporary_allocation near the end of this function
2793 goes back to the usual state of affairs. */
2795 rtl_in_current_obstack ();
2798 /* If we are doing position-independent code generation, now
2799 is the time to output special prologues and epilogues.
2800 We do not want to do this earlier, because it just clutters
2801 up inline functions with meaningless insns. */
2806 insns = get_insns ();
2808 /* Copy any shared structure that should not be shared. */
2810 unshare_all_rtl (insns);
2812 /* Instantiate all virtual registers. */
2814 instantiate_virtual_regs (current_function_decl, get_insns ());
2816 /* See if we have allocated stack slots that are not directly addressable.
2817 If so, scan all the insns and create explicit address computation
2818 for all references to such slots. */
2819 /* fixup_stack_slots (); */
2821 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
2822 are initialized and to compute whether control can drop off the end
2824 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2825 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2827 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
2828 if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
2829 goto exit_rest_of_compilation;
2831 /* Dump rtl code after jump, if we are doing that. */
2836 fprintf (jump_opt_dump_file, "\n;; Function %s\n\n",
2837 IDENTIFIER_POINTER (DECL_NAME (decl)));
2838 print_rtl (jump_opt_dump_file, insns);
2839 fflush (jump_opt_dump_file);
2842 /* Perform common subexpression elimination.
2843 Nonzero value from `cse_main' means that jumps were simplified
2844 and some code may now be unreachable, so do
2845 jump optimization again. */
2850 fprintf (cse_dump_file, "\n;; Function %s\n\n",
2851 IDENTIFIER_POINTER (DECL_NAME (decl)));
2856 TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
2858 if (flag_thread_jumps)
2859 /* Hacks by tiemann & kenner. */
2860 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
2862 TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
2864 TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ()));
2866 if (tem || optimize > 1)
2867 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2870 /* Dump rtl code after cse, if we are doing that. */
2875 print_rtl (cse_dump_file, insns);
2876 fflush (cse_dump_file);
2882 fprintf (loop_dump_file, "\n;; Function %s\n\n",
2883 IDENTIFIER_POINTER (DECL_NAME (decl)));
2886 /* Move constant computations out of loops. */
2892 loop_optimize (insns, loop_dump_file);
2896 /* Dump rtl code after loop opt, if we are doing that. */
2901 print_rtl (loop_dump_file, insns);
2902 fflush (loop_dump_file);
2908 fprintf (cse2_dump_file, "\n;; Function %s\n\n",
2909 IDENTIFIER_POINTER (DECL_NAME (decl)));
2912 if (optimize > 0 && flag_rerun_cse_after_loop)
2914 /* Running another jump optimization pass before the second
2915 cse pass sometimes simplifies the RTL enough to allow
2916 the second CSE pass to do a better job. Jump_optimize can change
2917 max_reg_num so we must rerun reg_scan afterwards.
2918 ??? Rework to not call reg_scan so often. */
2919 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2920 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2922 TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
2923 TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
2924 1, cse2_dump_file));
2926 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2929 if (optimize > 0 && flag_thread_jumps)
2930 /* This pass of jump threading straightens out code
2931 that was kinked by loop optimization. */
2932 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
2934 /* Dump rtl code after cse, if we are doing that. */
2939 print_rtl (cse2_dump_file, insns);
2940 fflush (cse2_dump_file);
2943 /* We are no longer anticipating cse in this function, at least. */
2945 cse_not_expected = 1;
2947 /* Now we choose between stupid (pcc-like) register allocation
2948 (if we got the -noreg switch and not -opt)
2949 and smart register allocation. */
2951 if (optimize > 0) /* Stupid allocation probably won't work */
2952 obey_regdecls = 0; /* if optimizations being done. */
2956 /* Print function header into flow dump now
2957 because doing the flow analysis makes some of the dump. */
2962 fprintf (flow_dump_file, "\n;; Function %s\n\n",
2963 IDENTIFIER_POINTER (DECL_NAME (decl)));
2970 regclass (insns, max_reg_num ());
2971 stupid_life_analysis (insns, max_reg_num (),
2977 /* Do control and data flow analysis,
2978 and write some of the results to dump file. */
2980 TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (),
2982 if (warn_uninitialized)
2984 uninitialized_vars_warning (DECL_INITIAL (decl));
2985 setjmp_args_warning ();
2989 /* Dump rtl after flow analysis. */
2994 print_rtl (flow_dump_file, insns);
2995 fflush (flow_dump_file);
2998 /* If -opt, try combining insns through substitution. */
3001 TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
3003 /* Dump rtl code after insn combination. */
3008 fprintf (combine_dump_file, "\n;; Function %s\n\n",
3009 IDENTIFIER_POINTER (DECL_NAME (decl)));
3010 dump_combine_stats (combine_dump_file);
3011 print_rtl (combine_dump_file, insns);
3012 fflush (combine_dump_file);
3015 /* Print function header into sched dump now
3016 because doing the sched analysis makes some of the dump. */
3021 fprintf (sched_dump_file, "\n;; Function %s\n\n",
3022 IDENTIFIER_POINTER (DECL_NAME (decl)));
3025 if (optimize > 0 && flag_schedule_insns)
3027 /* Do control and data sched analysis,
3028 and write some of the results to dump file. */
3030 TIMEVAR (sched_time, schedule_insns (sched_dump_file));
3033 /* Dump rtl after instruction scheduling. */
3038 print_rtl (sched_dump_file, insns);
3039 fflush (sched_dump_file);
3042 /* Unless we did stupid register allocation,
3043 allocate pseudo-regs that are used only within 1 basic block. */
3046 TIMEVAR (local_alloc_time,
3048 regclass (insns, max_reg_num ());
3052 /* Dump rtl code after allocating regs within basic blocks. */
3057 fprintf (local_reg_dump_file, "\n;; Function %s\n\n",
3058 IDENTIFIER_POINTER (DECL_NAME (decl)));
3059 dump_flow_info (local_reg_dump_file);
3060 dump_local_alloc (local_reg_dump_file);
3061 print_rtl (local_reg_dump_file, insns);
3062 fflush (local_reg_dump_file);
3065 if (global_reg_dump)
3067 fprintf (global_reg_dump_file, "\n;; Function %s\n\n",
3068 IDENTIFIER_POINTER (DECL_NAME (decl))));
3070 /* Unless we did stupid register allocation,
3071 allocate remaining pseudo-regs, then do the reload pass
3072 fixing up any insns that are invalid. */
3074 TIMEVAR (global_alloc_time,
3077 failure = global_alloc (global_reg_dump_file);
3079 failure = reload (insns, 0, global_reg_dump_file);
3082 if (global_reg_dump)
3085 dump_global_regs (global_reg_dump_file);
3086 print_rtl (global_reg_dump_file, insns);
3087 fflush (global_reg_dump_file);
3091 goto exit_rest_of_compilation;
3093 reload_completed = 1;
3095 /* On some machines, the prologue and epilogue code, or parts thereof,
3096 can be represented as RTL. Doing so lets us schedule insns between
3097 it and the rest of the code and also allows delayed branch
3098 scheduling to operate in the epilogue. */
3100 thread_prologue_and_epilogue_insns (insns);
3102 if (optimize > 0 && flag_schedule_insns_after_reload)
3107 fprintf (sched2_dump_file, "\n;; Function %s\n\n",
3108 IDENTIFIER_POINTER (DECL_NAME (decl)));
3111 /* Do control and data sched analysis again,
3112 and write some more of the results to dump file. */
3114 TIMEVAR (sched2_time, schedule_insns (sched2_dump_file));
3116 /* Dump rtl after post-reorder instruction scheduling. */
3121 print_rtl (sched2_dump_file, insns);
3122 fflush (sched2_dump_file);
3126 #ifdef LEAF_REGISTERS
3128 if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
3132 /* One more attempt to remove jumps to .+1
3133 left by dead-store-elimination.
3134 Also do cross-jumping this time
3135 and delete no-op move insns. */
3139 TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0));
3142 /* Dump rtl code after jump, if we are doing that. */
3147 fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n",
3148 IDENTIFIER_POINTER (DECL_NAME (decl)));
3149 print_rtl (jump2_opt_dump_file, insns);
3150 fflush (jump2_opt_dump_file);
3153 /* If a machine dependent reorganization is needed, call it. */
3154 #ifdef MACHINE_DEPENDENT_REORG
3155 MACHINE_DEPENDENT_REORG (insns);
3158 /* If a scheduling pass for delayed branches is to be done,
3159 call the scheduling code. */
3162 if (optimize > 0 && flag_delayed_branch)
3164 TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file));
3169 fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n",
3170 IDENTIFIER_POINTER (DECL_NAME (decl)));
3171 print_rtl (dbr_sched_dump_file, insns);
3172 fflush (dbr_sched_dump_file);
3178 /* Shorten branches. */
3179 TIMEVAR (shorten_branch_time,
3181 shorten_branches (get_insns ());
3185 TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file));
3190 fprintf (stack_reg_dump_file, "\n;; Function %s\n\n",
3191 IDENTIFIER_POINTER (DECL_NAME (decl)));
3192 print_rtl (stack_reg_dump_file, insns);
3193 fflush (stack_reg_dump_file);
3198 /* Now turn the rtl into assembler code. */
3200 TIMEVAR (final_time,
3205 /* Get the function's name, as described by its RTL.
3206 This may be different from the DECL_NAME name used
3207 in the source file. */
3209 x = DECL_RTL (decl);
3210 if (GET_CODE (x) != MEM)
3213 if (GET_CODE (x) != SYMBOL_REF)
3215 fnname = XSTR (x, 0);
3217 assemble_start_function (decl, fnname);
3218 final_start_function (insns, asm_out_file, optimize);
3219 final (insns, asm_out_file, optimize, 0);
3220 final_end_function (insns, asm_out_file, optimize);
3221 assemble_end_function (decl, fnname);
3222 fflush (asm_out_file);
3225 /* Write DBX symbols if requested */
3227 /* Note that for those inline functions where we don't initially
3228 know for certain that we will be generating an out-of-line copy,
3229 the first invocation of this routine (rest_of_compilation) will
3230 skip over this code by doing a `goto exit_rest_of_compilation;'.
3231 Later on, finish_compilation will call rest_of_compilation again
3232 for those inline functions that need to have out-of-line copies
3233 generated. During that call, we *will* be routed past here. */
3235 #ifdef DBX_DEBUGGING_INFO
3236 if (write_symbols == DBX_DEBUG)
3237 TIMEVAR (symout_time, dbxout_function (decl));
3240 #ifdef DWARF_DEBUGGING_INFO
3241 if (write_symbols == DWARF_DEBUG)
3242 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3245 exit_rest_of_compilation:
3247 /* In case the function was not output,
3248 don't leave any temporary anonymous types
3249 queued up for sdb output. */
3250 #ifdef SDB_DEBUGGING_INFO
3251 if (write_symbols == SDB_DEBUG)
3252 sdbout_types (NULL_TREE);
3255 /* Put back the tree of subblocks and list of arguments
3256 from before we copied them.
3257 Code generation and the output of debugging info may have modified
3258 the copy, but the original is unchanged. */
3260 if (saved_block_tree != 0)
3261 DECL_INITIAL (decl) = saved_block_tree;
3262 if (saved_arguments != 0)
3263 DECL_ARGUMENTS (decl) = saved_arguments;
3265 reload_completed = 0;
3267 /* Clear out the insn_length contents now that they are no longer valid. */
3268 init_insn_lengths ();
3270 /* Clear out the real_constant_chain before some of the rtx's
3271 it runs through become garbage. */
3273 clear_const_double_mem ();
3275 /* Cancel the effect of rtl_in_current_obstack. */
3277 resume_temporary_allocation ();
3279 /* Show no temporary slots allocated. */
3283 /* The parsing time is all the time spent in yyparse
3284 *except* what is spent in this function. */
3286 parse_time -= get_run_time () - start_time;
3289 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3290 Exit code is 35 if can't open files, 34 if fatal error,
3291 33 if had nonfatal errors, else success. */
3294 main (argc, argv, envp)
3301 int flag_print_mem = 0;
3302 int version_flag = 0;
3305 /* save in case md file wants to emit args as a comment. */
3309 p = argv[0] + strlen (argv[0]);
3310 while (p != argv[0] && p[-1] != '/'
3311 #ifdef DIR_SEPARATOR
3312 && p[-1] != DIR_SEPARATOR
3319 /* Get rid of any avoidable limit on stack size. */
3323 /* Set the stack limit huge so that alloca does not fail. */
3324 getrlimit (RLIMIT_STACK, &rlim);
3325 rlim.rlim_cur = rlim.rlim_max;
3326 setrlimit (RLIMIT_STACK, &rlim);
3328 #endif /* RLIMIT_STACK */
3330 signal (SIGFPE, float_signal);
3333 signal (SIGPIPE, pipe_closed);
3336 decl_printable_name = decl_name;
3337 lang_expand_expr = (struct rtx_def *(*)()) do_abort;
3338 interim_eh_hook = interim_eh;
3340 /* Initialize whether `char' is signed. */
3341 flag_signed_char = DEFAULT_SIGNED_CHAR;
3342 #ifdef DEFAULT_SHORT_ENUMS
3343 /* Initialize how much space enums occupy, by default. */
3344 flag_short_enums = DEFAULT_SHORT_ENUMS;
3347 /* Scan to see what optimization level has been specified. That will
3348 determine the default value of many flags. */
3349 for (i = 1; i < argc; i++)
3351 if (!strcmp (argv[i], "-O"))
3355 else if (argv[i][0] == '-' && argv[i][1] == 'O')
3357 /* Handle -O2, -O3, -O69, ... */
3358 char *p = &argv[i][2];
3362 if (! (c >= '0' && c <= '9'))
3365 optimize = atoi (&argv[i][2]);
3369 obey_regdecls = (optimize == 0);
3379 flag_thread_jumps = 1;
3381 flag_delayed_branch = 1;
3383 #ifdef CAN_DEBUG_WITHOUT_FP
3384 flag_omit_frame_pointer = 1;
3390 flag_cse_follow_jumps = 1;
3391 flag_cse_skip_blocks = 1;
3392 flag_expensive_optimizations = 1;
3393 flag_strength_reduce = 1;
3394 flag_rerun_cse_after_loop = 1;
3395 flag_caller_saves = 1;
3397 #ifdef INSN_SCHEDULING
3398 flag_schedule_insns = 1;
3399 flag_schedule_insns_after_reload = 1;
3405 flag_inline_functions = 1;
3408 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3411 set_target_switch ("");
3413 #ifdef OPTIMIZATION_OPTIONS
3414 /* Allow default optimizations to be specified on a per-machine basis. */
3415 OPTIMIZATION_OPTIONS (optimize);
3418 /* Initialize register usage now so switches may override. */
3421 for (i = 1; i < argc; i++)
3424 /* If this is a language-specific option,
3425 decode it in a language-specific way. */
3426 for (j = 0; lang_options[j] != 0; j++)
3427 if (!strncmp (argv[i], lang_options[j],
3428 strlen (lang_options[j])))
3430 if (lang_options[j] != 0)
3431 /* If the option is valid for *some* language,
3432 treat it as valid even if this language doesn't understand it. */
3433 lang_decode_option (argv[i]);
3434 else if (argv[i][0] == '-' && argv[i][1] != 0)
3436 register char *str = argv[i] + 1;
3441 set_target_switch (&str[1]);
3442 else if (!strcmp (str, "dumpbase"))
3444 dump_base_name = argv[++i];
3446 else if (str[0] == 'd')
3448 register char *p = &str[1];
3456 global_reg_dump = 1;
3462 cse_dump = 1, cse2_dump = 1;
3480 global_reg_dump = 1;
3498 flag_print_asm_name = 1;
3520 rtl_dump_and_exit = 1;
3524 else if (str[0] == 'f')
3526 register char *p = &str[1];
3529 /* Some kind of -f option.
3530 P's value is the option sans `-f'.
3531 Search for it in the table of options. */
3534 !found && j < sizeof (f_options) / sizeof (f_options[0]);
3537 if (!strcmp (p, f_options[j].string))
3539 *f_options[j].variable = f_options[j].on_value;
3540 /* A goto here would be cleaner,
3541 but breaks the vax pcc. */
3544 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3545 && ! strcmp (p+3, f_options[j].string))
3547 *f_options[j].variable = ! f_options[j].on_value;
3554 else if (!strncmp (p, "fixed-", 6))
3555 fix_register (&p[6], 1, 1);
3556 else if (!strncmp (p, "call-used-", 10))
3557 fix_register (&p[10], 0, 1);
3558 else if (!strncmp (p, "call-saved-", 11))
3559 fix_register (&p[11], 0, 0);
3561 error ("Invalid option `%s'", argv[i]);
3563 else if (str[0] == 'O')
3565 register char *p = str+1;
3566 while (*p && *p >= '0' && *p <= '9')
3571 error ("Invalid option `%s'", argv[i]);
3573 else if (!strcmp (str, "pedantic"))
3575 else if (!strcmp (str, "pedantic-errors"))
3576 flag_pedantic_errors = pedantic = 1;
3577 else if (!strcmp (str, "quiet"))
3579 else if (!strcmp (str, "version"))
3581 else if (!strcmp (str, "w"))
3582 inhibit_warnings = 1;
3583 else if (!strcmp (str, "W"))
3586 /* We save the value of warn_uninitialized, since if they put
3587 -Wuninitialized on the command line, we need to generate a
3588 warning about not using it without also specifying -O. */
3589 if (warn_uninitialized != 1)
3590 warn_uninitialized = 2;
3592 else if (str[0] == 'W')
3594 register char *p = &str[1];
3597 /* Some kind of -W option.
3598 P's value is the option sans `-W'.
3599 Search for it in the table of options. */
3602 !found && j < sizeof (W_options) / sizeof (W_options[0]);
3605 if (!strcmp (p, W_options[j].string))
3607 *W_options[j].variable = W_options[j].on_value;
3608 /* A goto here would be cleaner,
3609 but breaks the vax pcc. */
3612 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3613 && ! strcmp (p+3, W_options[j].string))
3615 *W_options[j].variable = ! W_options[j].on_value;
3622 else if (!strncmp (p, "id-clash-", 9))
3628 if (*endp >= '0' && *endp <= '9')
3632 error ("Invalid option `%s'", argv[i]);
3637 id_clash_len = atoi (str + 10);
3640 else if (!strncmp (p, "larger-than-", 12))
3642 char *endp = p + 12;
3646 if (*endp >= '0' && *endp <= '9')
3650 error ("Invalid option `%s'", argv[i]);
3651 goto larger_than_lose;
3654 warn_larger_than = 1;
3655 larger_than_size = atoi (str + 13);
3659 error ("Invalid option `%s'", argv[i]);
3661 else if (!strcmp (str, "p"))
3663 if (!output_bytecode)
3666 error ("profiling not supported in bytecode compilation");
3668 else if (!strcmp (str, "a"))
3670 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3671 warning ("`-a' option (basic block profile) not supported");
3673 profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
3676 else if (!strcmp (str, "ax"))
3678 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3679 warning ("`-ax' option (jump profiling) not supported");
3681 profile_block_flag = (!profile_block_flag
3682 || profile_block_flag == 2) ? 2 : 3;
3685 else if (str[0] == 'g')
3692 while (*p && (*p < '0' || *p > '9'))
3696 while (*q && (*q >= '0' && *q <= '9'))
3701 level = 2; /* default debugging info level */
3702 if (*q || level > 3)
3704 warning ("invalid debug level specification in option: `-%s'",
3706 warning ("no debugging information will be generated");
3710 /* If more than one debugging type is supported,
3711 you must define PREFERRED_DEBUGGING_TYPE
3712 to choose a format in a system-dependent way. */
3713 /* This is one long line cause VAXC can't handle a \-newline. */
3714 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
3715 #ifdef PREFERRED_DEBUGGING_TYPE
3716 if (!strncmp (str, "ggdb", len))
3717 write_symbols = PREFERRED_DEBUGGING_TYPE;
3718 #else /* no PREFERRED_DEBUGGING_TYPE */
3719 You Lose! You must define PREFERRED_DEBUGGING_TYPE!
3720 #endif /* no PREFERRED_DEBUGGING_TYPE */
3721 #endif /* More than one debugger format enabled. */
3722 #ifdef DBX_DEBUGGING_INFO
3723 if (write_symbols != NO_DEBUG)
3725 else if (!strncmp (str, "ggdb", len))
3726 write_symbols = DBX_DEBUG;
3727 else if (!strncmp (str, "gstabs", len))
3728 write_symbols = DBX_DEBUG;
3729 else if (!strncmp (str, "gstabs+", len))
3730 write_symbols = DBX_DEBUG;
3732 /* Always enable extensions for -ggdb or -gstabs+,
3733 always disable for -gstabs.
3734 For plain -g, use system-specific default. */
3735 if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len)
3737 use_gnu_debug_info_extensions = 1;
3738 else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len)
3740 use_gnu_debug_info_extensions = 1;
3741 else if (write_symbols == DBX_DEBUG
3742 && !strncmp (str, "gstabs", len) && len >= 2)
3743 use_gnu_debug_info_extensions = 0;
3745 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3746 #endif /* DBX_DEBUGGING_INFO */
3747 #ifdef DWARF_DEBUGGING_INFO
3748 if (write_symbols != NO_DEBUG)
3750 else if (!strncmp (str, "g", len))
3751 write_symbols = DWARF_DEBUG;
3752 else if (!strncmp (str, "ggdb", len))
3753 write_symbols = DWARF_DEBUG;
3754 else if (!strncmp (str, "gdwarf", len))
3755 write_symbols = DWARF_DEBUG;
3757 /* Always enable extensions for -ggdb or -gdwarf+,
3758 always disable for -gdwarf.
3759 For plain -g, use system-specific default. */
3760 if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len)
3762 use_gnu_debug_info_extensions = 1;
3763 else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+"))
3764 use_gnu_debug_info_extensions = 1;
3765 else if (write_symbols == DWARF_DEBUG
3766 && !strncmp (str, "gdwarf", len) && len >= 2)
3767 use_gnu_debug_info_extensions = 0;
3769 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3771 #ifdef SDB_DEBUGGING_INFO
3772 if (write_symbols != NO_DEBUG)
3774 else if (!strncmp (str, "g", len))
3775 write_symbols = SDB_DEBUG;
3776 else if (!strncmp (str, "gdb", len))
3777 write_symbols = SDB_DEBUG;
3778 else if (!strncmp (str, "gcoff", len))
3779 write_symbols = SDB_DEBUG;
3780 #endif /* SDB_DEBUGGING_INFO */
3781 #ifdef XCOFF_DEBUGGING_INFO
3782 if (write_symbols != NO_DEBUG)
3784 else if (!strncmp (str, "g", len))
3785 write_symbols = XCOFF_DEBUG;
3786 else if (!strncmp (str, "ggdb", len))
3787 write_symbols = XCOFF_DEBUG;
3788 else if (!strncmp (str, "gxcoff", len))
3789 write_symbols = XCOFF_DEBUG;
3791 /* Always enable extensions for -ggdb or -gxcoff+,
3792 always disable for -gxcoff.
3793 For plain -g, use system-specific default. */
3794 if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len)
3796 use_gnu_debug_info_extensions = 1;
3797 else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+"))
3798 use_gnu_debug_info_extensions = 1;
3799 else if (write_symbols == XCOFF_DEBUG
3800 && !strncmp (str, "gxcoff", len) && len >= 2)
3801 use_gnu_debug_info_extensions = 0;
3803 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3805 if (write_symbols == NO_DEBUG)
3806 warning ("`-%s' not supported by this configuration of GCC",
3808 else if (level == 0)
3809 write_symbols = NO_DEBUG;
3811 debug_info_level = (enum debug_info_level) level;
3813 else if (!strcmp (str, "o"))
3815 asm_file_name = argv[++i];
3817 else if (str[0] == 'G')
3819 g_switch_set = TRUE;
3820 g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]);
3822 else if (!strncmp (str, "aux-info", 8))
3824 flag_gen_aux_info = 1;
3825 aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
3828 error ("Invalid option `%s'", argv[i]);
3830 else if (argv[i][0] == '+')
3831 error ("Invalid option `%s'", argv[i]);
3836 /* Initialize for bytecode output. A good idea to do this as soon as
3837 possible after the "-f" options have been parsed. */
3838 if (output_bytecode)
3840 #ifndef TARGET_SUPPORTS_BYTECODE
3841 /* Just die with a fatal error if not supported */
3842 fatal ("-fbytecode not supporter for this target");
3850 /* Inlining does not work if not optimizing,
3851 so force it not to be done. */
3855 /* The c_decode_option and lang_decode_option functions set
3856 this to `2' if -Wall is used, so we can avoid giving out
3857 lots of errors for people who don't realize what -Wall does. */
3858 if (warn_uninitialized == 1)
3859 warning ("-Wuninitialized is not supported without -O");
3862 #if defined(DWARF_DEBUGGING_INFO)
3863 if (write_symbols == DWARF_DEBUG
3864 && strcmp (language_string, "GNU C++") == 0)
3866 warning ("-g option not supported for C++ on systems using the DWARF debugging format");
3867 write_symbols = NO_DEBUG;
3869 #endif /* defined(DWARF_DEBUGGING_INFO) */
3871 #ifdef OVERRIDE_OPTIONS
3872 /* Some machines may reject certain combinations of options. */
3876 if (profile_block_flag == 3)
3878 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
3879 profile_block_flag = 2;
3882 /* Unrolling all loops implies that standard loop unrolling must also
3884 if (flag_unroll_all_loops)
3885 flag_unroll_loops = 1;
3886 /* Loop unrolling requires that strength_reduction be on also. Silently
3887 turn on strength reduction here if it isn't already on. Also, the loop
3888 unrolling code assumes that cse will be run after loop, so that must
3889 be turned on also. */
3890 if (flag_unroll_loops)
3892 flag_strength_reduce = 1;
3893 flag_rerun_cse_after_loop = 1;
3896 /* Warn about options that are not supported on this machine. */
3897 #ifndef INSN_SCHEDULING
3898 if (flag_schedule_insns || flag_schedule_insns_after_reload)
3899 warning ("instruction scheduling not supported on this target machine");
3902 if (flag_delayed_branch)
3903 warning ("this target machine does not have delayed branches");
3906 /* If we are in verbose mode, write out the version and maybe all the
3907 option flags in use. */
3910 fprintf (stderr, "%s version %s", language_string, version_string);
3911 #ifdef TARGET_VERSION
3916 #define __VERSION__ "[unknown]"
3918 fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__);
3920 fprintf (stderr, " compiled by CC.\n");
3923 print_switch_values ();
3926 compile_file (filename);
3928 #if !defined(OS2) && !defined(VMS) && !defined(_WIN32)
3931 char *lim = (char *) sbrk (0);
3933 fprintf (stderr, "Data size %d.\n",
3934 lim - (char *) &environ);
3938 system ("ps -l 1>&2");
3941 #endif /* not USG */
3943 #endif /* not OS2 and not VMS and not _WIN32 */
3946 exit (FATAL_EXIT_CODE);
3948 exit (FATAL_EXIT_CODE);
3949 exit (SUCCESS_EXIT_CODE);
3953 /* Decode -m switches. */
3955 /* Here is a table, controlled by the tm.h file, listing each -m switch
3956 and which bits in `target_switches' it should set or clear.
3957 If VALUE is positive, it is bits to set.
3958 If VALUE is negative, -VALUE is bits to clear.
3959 (The sign bit is not used so there is no confusion.) */
3961 struct {char *name; int value;} target_switches []
3964 /* This table is similar, but allows the switch to have a value. */
3966 #ifdef TARGET_OPTIONS
3967 struct {char *prefix; char ** variable;} target_options []
3971 /* Decode the switch -mNAME. */
3974 set_target_switch (name)
3980 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
3981 if (!strcmp (target_switches[j].name, name))
3983 if (target_switches[j].value < 0)
3984 target_flags &= ~-target_switches[j].value;
3986 target_flags |= target_switches[j].value;
3990 #ifdef TARGET_OPTIONS
3992 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
3994 int len = strlen (target_options[j].prefix);
3995 if (!strncmp (target_options[j].prefix, name, len))
3997 *target_options[j].variable = name + len;
4004 error ("Invalid option `%s'", name);
4007 /* Variable used for communication between the following two routines. */
4009 static int line_position;
4011 /* Print an option value and adjust the position in the line. */
4014 print_single_switch (type, name)
4017 fprintf (stderr, " %s%s", type, name);
4019 line_position += strlen (type) + strlen (name) + 1;
4021 if (line_position > 65)
4023 fprintf (stderr, "\n\t");
4028 /* Print default target switches for -version. */
4031 print_switch_values ()
4035 fprintf (stderr, "enabled:");
4038 for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
4039 if (*f_options[j].variable == f_options[j].on_value)
4040 print_single_switch ("-f", f_options[j].string);
4042 for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++)
4043 if (*W_options[j].variable == W_options[j].on_value)
4044 print_single_switch ("-W", W_options[j].string);
4046 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
4047 if (target_switches[j].name[0] != '\0'
4048 && target_switches[j].value > 0
4049 && ((target_switches[j].value & target_flags)
4050 == target_switches[j].value))
4051 print_single_switch ("-m", target_switches[j].name);
4053 fprintf (stderr, "\n");