1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92-5, 1996 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",
644 "-Wstrict-prototypes",
645 "-Wno-strict-prototypes",
651 "-Wno-write-strings",
653 /* these are for obj c */
669 /* Options controlling warnings */
671 /* Don't print warning messages. -w. */
673 int inhibit_warnings = 0;
675 /* Print various extra warnings. -W. */
677 int extra_warnings = 0;
679 /* Treat warnings as errors. -Werror. */
681 int warnings_are_errors = 0;
683 /* Nonzero to warn about unused local variables. */
687 /* Nonzero to warn about variables used before they are initialized. */
689 int warn_uninitialized;
691 /* Nonzero means warn about all declarations which shadow others. */
695 /* Warn if a switch on an enum fails to have a case for every enum value. */
699 /* Nonzero means warn about function definitions that default the return type
700 or that use a null return and have a return-type other than void. */
702 int warn_return_type;
704 /* Nonzero means warn about pointer casts that increase the required
705 alignment of the target type (and might therefore lead to a crash
706 due to a misaligned access). */
710 /* Nonzero means warn about any identifiers that match in the first N
711 characters. The value N is in `id_clash_len'. */
714 unsigned id_clash_len;
716 /* Nonzero means warn about any objects definitions whose size is larger
717 than N bytes. Also want about function definitions whose returned
718 values are larger than N bytes. The value N is in `larger_than_size'. */
720 int warn_larger_than;
721 unsigned larger_than_size;
723 /* Nonzero means warn if inline function is too large. */
727 /* Warn if a function returns an aggregate,
728 since there are often incompatible calling conventions for doing this. */
730 int warn_aggregate_return;
732 /* Likewise for -W. */
734 struct { char *string; int *variable; int on_value;} W_options[] =
736 {"unused", &warn_unused, 1},
737 {"error", &warnings_are_errors, 1},
738 {"shadow", &warn_shadow, 1},
739 {"switch", &warn_switch, 1},
740 {"aggregate-return", &warn_aggregate_return, 1},
741 {"cast-align", &warn_cast_align, 1},
742 {"uninitialized", &warn_uninitialized, 1},
743 {"inline", &warn_inline, 1}
746 /* Output files for assembler code (real compiler output)
747 and debugging dumps. */
752 FILE *jump_opt_dump_file;
754 FILE *loop_dump_file;
755 FILE *cse2_dump_file;
756 FILE *flow_dump_file;
757 FILE *combine_dump_file;
758 FILE *sched_dump_file;
759 FILE *local_reg_dump_file;
760 FILE *global_reg_dump_file;
761 FILE *sched2_dump_file;
762 FILE *jump2_opt_dump_file;
763 FILE *dbr_sched_dump_file;
764 FILE *stack_reg_dump_file;
766 /* Time accumulators, to count the total time spent in various passes. */
770 int integration_time;
778 int local_alloc_time;
779 int global_alloc_time;
782 int shorten_branch_time;
788 /* Return time used so far, in microseconds. */
798 struct rusage rusage;
803 int proc_system_time;
805 int child_system_time;
817 return (clock() * 1000);
818 #else /* not _WIN32 */
821 return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
824 getrusage (0, &rusage);
825 return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
826 + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
829 return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
835 #define TIMEVAR(VAR, BODY) \
836 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
839 print_time (str, total)
844 "time in %s: %d.%06d\n",
845 str, total / 1000000, total % 1000000);
848 /* Count an error or warning. Return 1 if the message should be printed. */
851 count_error (warningp)
854 if (warningp && inhibit_warnings)
857 if (warningp && !warnings_are_errors)
861 static int warning_message = 0;
863 if (warningp && !warning_message)
865 fprintf (stderr, "%s: warnings being treated as errors\n", progname);
874 /* Print a fatal error message. NAME is the text.
875 Also include a system error message based on `errno'. */
878 pfatal_with_name (name)
881 fprintf (stderr, "%s: ", progname);
883 exit (FATAL_EXIT_CODE);
887 fatal_io_error (name)
890 fprintf (stderr, "%s: %s: I/O error\n", progname, name);
891 exit (FATAL_EXIT_CODE);
894 /* Called to give a better error message for a bad insn rather than
895 just calling abort(). */
898 fatal_insn (message, insn)
902 if (!output_bytecode)
908 fflush (asm_out_file);
910 fflush (aux_info_file);
912 fflush (rtl_dump_file);
913 if (jump_opt_dump_file)
914 fflush (jump_opt_dump_file);
916 fflush (cse_dump_file);
918 fflush (loop_dump_file);
920 fflush (cse2_dump_file);
922 fflush (flow_dump_file);
923 if (combine_dump_file)
924 fflush (combine_dump_file);
926 fflush (sched_dump_file);
927 if (local_reg_dump_file)
928 fflush (local_reg_dump_file);
929 if (global_reg_dump_file)
930 fflush (global_reg_dump_file);
931 if (sched2_dump_file)
932 fflush (sched2_dump_file);
933 if (jump2_opt_dump_file)
934 fflush (jump2_opt_dump_file);
935 if (dbr_sched_dump_file)
936 fflush (dbr_sched_dump_file);
937 if (stack_reg_dump_file)
938 fflush (stack_reg_dump_file);
944 /* Called to give a better error message when we don't have an insn to match
945 what we are looking for or if the insn's constraints aren't satisfied,
946 rather than just calling abort(). */
949 fatal_insn_not_found (insn)
952 if (INSN_CODE (insn) < 0)
953 fatal_insn ("internal error--unrecognizable insn:", insn);
955 fatal_insn ("internal error--insn does not satisfy its constraints:", insn);
958 /* This is the default decl_printable_name function. */
961 decl_name (decl, kind)
965 return IDENTIFIER_POINTER (DECL_NAME (decl));
968 /* This is the default interim_eh_hook function. */
971 interim_eh (finalization)
974 /* Don't do anything by default. */
977 static int need_error_newline;
979 /* Function of last error message;
980 more generally, function such that if next error message is in it
981 then we don't have to mention the function name. */
982 static tree last_error_function = NULL;
984 /* Used to detect when input_file_stack has changed since last described. */
985 static int last_error_tick;
987 /* Called when the start of a function definition is parsed,
988 this function prints on stderr the name of the function. */
991 announce_function (decl)
997 if (rtl_dump_and_exit)
998 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
1000 fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk));
1002 need_error_newline = 1;
1003 last_error_function = current_function_decl;
1007 /* The default function to print out name of current function that caused
1011 default_print_error_function (file)
1014 if (last_error_function != current_function_decl)
1016 char *kind = "function";
1017 if (current_function_decl != 0
1018 && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
1022 fprintf (stderr, "%s: ", file);
1024 if (current_function_decl == NULL)
1025 fprintf (stderr, "At top level:\n");
1028 char *name = (*decl_printable_name) (current_function_decl, &kind);
1029 fprintf (stderr, "In %s `%s':\n", kind, name);
1032 last_error_function = current_function_decl;
1036 /* Called by report_error_function to print out function name.
1037 * Default may be overridden by language front-ends. */
1039 void (*print_error_function) PROTO((char*)) = default_print_error_function;
1041 /* Prints out, if necessary, the name of the current function
1042 that caused an error. Called from all error and warning functions. */
1045 report_error_function (file)
1048 struct file_stack *p;
1050 if (need_error_newline)
1052 fprintf (stderr, "\n");
1053 need_error_newline = 0;
1056 (*print_error_function) (file);
1058 if (input_file_stack && input_file_stack->next != 0
1059 && input_file_stack_tick != last_error_tick
1060 && file == input_filename)
1062 fprintf (stderr, "In file included");
1063 for (p = input_file_stack->next; p; p = p->next)
1065 fprintf (stderr, " from %s:%d", p->name, p->line);
1067 fprintf (stderr, ",\n ");
1069 fprintf (stderr, ":\n");
1070 last_error_tick = input_file_stack_tick;
1074 /* Print a message. */
1077 vmessage (prefix, s, ap)
1083 fprintf (stderr, "%s: ", prefix);
1086 vfprintf (stderr, s, ap);
1089 HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT);
1090 HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT);
1091 HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT);
1092 HOST_WIDE_INT v4 = va_arg(ap, HOST_WIDE_INT);
1093 fprintf (stderr, s, v1, v2, v3, v4);
1098 /* Print a message relevant to line LINE of file FILE. */
1101 v_message_with_file_and_line (file, line, prefix, s, ap)
1109 fprintf (stderr, "%s:%d: ", file, line);
1111 fprintf (stderr, "%s: ", progname);
1113 vmessage (prefix, s, ap);
1114 fputc ('\n', stderr);
1117 /* Print a message relevant to the given DECL. */
1120 v_message_with_decl (decl, prefix, s, ap)
1128 fprintf (stderr, "%s:%d: ",
1129 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
1132 fprintf (stderr, "%s: ", prefix);
1134 /* Do magic to get around lack of varargs support for insertion
1135 of arguments into existing list. We know that the decl is first;
1136 we ass_u_me that it will be printed with "%s". */
1138 for (p = s; *p; ++p)
1142 if (*(p + 1) == '%')
1149 if (p > s) /* Print the left-hand substring. */
1151 char fmt[sizeof "%.255s"];
1154 if (width > 255L) width = 255L; /* arbitrary */
1155 sprintf (fmt, "%%.%lds", width);
1156 fprintf (stderr, fmt, s);
1159 if (*p == '%') /* Print the name. */
1161 char *n = (DECL_NAME (decl)
1162 ? (*decl_printable_name) (decl, &junk)
1168 if (isalpha (*(p - 1) & 0xFF))
1173 if (*p) /* Print the rest of the message. */
1174 vmessage ((char *)NULL, p, ap);
1176 fputc ('\n', stderr);
1179 /* Figure file and line of the given INSN. */
1182 file_and_line_for_asm (insn, pfile, pline)
1187 rtx body = PATTERN (insn);
1190 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1191 if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
1192 asmop = SET_SRC (body);
1193 else if (GET_CODE (body) == ASM_OPERANDS)
1195 else if (GET_CODE (body) == PARALLEL
1196 && GET_CODE (XVECEXP (body, 0, 0)) == SET)
1197 asmop = SET_SRC (XVECEXP (body, 0, 0));
1198 else if (GET_CODE (body) == PARALLEL
1199 && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
1200 asmop = XVECEXP (body, 0, 0);
1206 *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
1207 *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
1211 *pfile = input_filename;
1216 /* Report an error at line LINE of file FILE. */
1219 v_error_with_file_and_line (file, line, s, ap)
1226 report_error_function (file);
1227 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1231 error_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1243 file = va_arg (ap, char *);
1244 line = va_arg (ap, int);
1245 s = va_arg (ap, char *);
1248 v_error_with_file_and_line (file, line, s, ap);
1252 /* Report an error at the declaration DECL.
1253 S is a format string which uses %s to substitute the declaration
1254 name; subsequent substitutions are a la printf. */
1257 v_error_with_decl (decl, s, ap)
1263 report_error_function (DECL_SOURCE_FILE (decl));
1264 v_message_with_decl (decl, (char *)NULL, s, ap);
1268 error_with_decl VPROTO((tree decl, char *s, ...))
1279 decl = va_arg (ap, tree);
1280 s = va_arg (ap, char *);
1283 v_error_with_decl (decl, s, ap);
1287 /* Report an error at the line number of the insn INSN.
1288 This is used only when INSN is an `asm' with operands,
1289 and each ASM_OPERANDS records its own source file and line. */
1292 v_error_for_asm (insn, s, ap)
1301 file_and_line_for_asm (insn, &file, &line);
1302 report_error_function (file);
1303 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1307 error_for_asm VPROTO((rtx insn, char *s, ...))
1318 insn = va_arg (ap, rtx);
1319 s = va_arg (ap, char *);
1322 v_error_for_asm (insn, s, ap);
1326 /* Report an error at the current line number. */
1333 v_error_with_file_and_line (input_filename, lineno, s, ap);
1337 error VPROTO((char *s, ...))
1347 s = va_arg (ap, char *);
1354 /* Report a fatal error at the current line number. */
1362 exit (FATAL_EXIT_CODE);
1366 fatal VPROTO((char *s, ...))
1376 s = va_arg (ap, char *);
1383 /* Report a warning at line LINE of file FILE. */
1386 v_warning_with_file_and_line (file, line, s, ap)
1392 if (count_error (1))
1394 report_error_function (file);
1395 v_message_with_file_and_line (file, line, "warning", s, ap);
1400 warning_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1412 file = va_arg (ap, char *);
1413 line = va_arg (ap, int);
1414 s = va_arg (ap, char *);
1417 v_warning_with_file_and_line (file, line, s, ap);
1421 /* Report a warning at the declaration DECL.
1422 S is a format string which uses %s to substitute the declaration
1423 name; subsequent substitutions are a la printf. */
1426 v_warning_with_decl (decl, s, ap)
1431 if (count_error (1))
1433 report_error_function (DECL_SOURCE_FILE (decl));
1434 v_message_with_decl (decl, "warning", s, ap);
1439 warning_with_decl VPROTO((tree decl, char *s, ...))
1450 decl = va_arg (ap, tree);
1451 s = va_arg (ap, char *);
1454 v_warning_with_decl (decl, s, ap);
1458 /* Report a warning at the line number of the insn INSN.
1459 This is used only when INSN is an `asm' with operands,
1460 and each ASM_OPERANDS records its own source file and line. */
1463 v_warning_for_asm (insn, s, ap)
1468 if (count_error (1))
1473 file_and_line_for_asm (insn, &file, &line);
1474 report_error_function (file);
1475 v_message_with_file_and_line (file, line, "warning", s, ap);
1480 warning_for_asm VPROTO((rtx insn, char *s, ...))
1491 insn = va_arg (ap, rtx);
1492 s = va_arg (ap, char *);
1495 v_warning_for_asm (insn, s, ap);
1499 /* Report a warning at the current line number. */
1506 v_warning_with_file_and_line (input_filename, lineno, s, ap);
1510 warning VPROTO((char *s, ...))
1520 s = va_arg (ap, char *);
1527 /* These functions issue either warnings or errors depending on
1528 -pedantic-errors. */
1535 if (flag_pedantic_errors)
1542 pedwarn VPROTO((char *s, ...))
1552 s = va_arg (ap, char *);
1560 v_pedwarn_with_decl (decl, s, ap)
1565 /* We don't want -pedantic-errors to cause the compilation to fail from
1566 "errors" in system header files. Sometimes fixincludes can't fix what's
1567 broken (eg: unsigned char bitfields - fixing it may change the alignment
1568 which will cause programs to mysteriously fail because the C library
1569 or kernel uses the original layout). There's no point in issuing a
1570 warning either, it's just unnecessary noise. */
1572 if (! DECL_IN_SYSTEM_HEADER (decl))
1574 if (flag_pedantic_errors)
1575 v_error_with_decl (decl, s, ap);
1577 v_warning_with_decl (decl, s, ap);
1582 pedwarn_with_decl VPROTO((tree decl, char *s, ...))
1593 decl = va_arg (ap, tree);
1594 s = va_arg (ap, char *);
1597 v_pedwarn_with_decl (decl, s, ap);
1602 v_pedwarn_with_file_and_line (file, line, s, ap)
1608 if (flag_pedantic_errors)
1609 v_error_with_file_and_line (file, line, s, ap);
1611 v_warning_with_file_and_line (file, line, s, ap);
1615 pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1627 file = va_arg (ap, char *);
1628 line = va_arg (ap, int);
1629 s = va_arg (ap, char *);
1632 v_pedwarn_with_file_and_line (file, line, s, ap);
1636 /* Apologize for not implementing some feature. */
1645 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1647 fprintf (stderr, "%s: ", progname);
1648 vmessage ("sorry, not implemented", s, ap);
1649 fputc ('\n', stderr);
1653 sorry VPROTO((char *s, ...))
1663 s = va_arg (ap, char *);
1670 /* Apologize for not implementing some feature, then quit. */
1673 v_really_sorry (s, ap)
1679 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1681 fprintf (stderr, "%s: ", progname);
1682 vmessage ("sorry, not implemented", s, ap);
1683 fatal (" (fatal)\n");
1687 really_sorry VPROTO((char *s, ...))
1697 s = va_arg (ap, char *);
1700 v_really_sorry (s, ap);
1704 /* More 'friendly' abort that prints the line and file.
1705 config.h can #define abort fancy_abort if you like that sort of thing.
1707 I don't think this is actually a good idea.
1708 Other sorts of crashes will look a certain way.
1709 It is a good thing if crashes from calling abort look the same way.
1715 fatal ("internal gcc abort");
1718 /* This calls abort and is used to avoid problems when abort if a macro.
1719 It is used when we need to pass the address of abort. */
1727 /* When `malloc.c' is compiled with `rcheck' defined,
1728 it calls this function to report clobberage. */
1736 /* Same as `malloc' but report error if no memory available. */
1742 register char *value = (char *) malloc (size);
1744 fatal ("virtual memory exhausted");
1748 /* Same as `realloc' but report error if no memory available. */
1751 xrealloc (ptr, size)
1755 char *result = (char *) realloc (ptr, size);
1757 fatal ("virtual memory exhausted");
1761 /* Same as `strdup' but report error if no memory available. */
1767 register char *result = (char *) malloc (strlen (s) + 1);
1770 fatal ("virtual memory exhausted");
1775 /* Return the logarithm of X, base 2, considering X unsigned,
1776 if X is a power of 2. Otherwise, returns -1.
1778 This should be used via the `exact_log2' macro. */
1782 register unsigned HOST_WIDE_INT x;
1784 register int log = 0;
1785 /* Test for 0 or a power of 2. */
1786 if (x == 0 || x != (x & -x))
1788 while ((x >>= 1) != 0)
1793 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1794 If X is 0, return -1.
1796 This should be used via the floor_log2 macro. */
1800 register unsigned HOST_WIDE_INT x;
1802 register int log = -1;
1810 jmp_buf float_handler;
1812 /* Specify where to longjmp to when a floating arithmetic error happens.
1813 If HANDLER is 0, it means don't handle the errors any more. */
1816 set_float_handler (handler)
1819 float_handled = (handler != 0);
1821 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1824 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1825 error happens, pushing the previous specification into OLD_HANDLER.
1826 Return an indication of whether there was a previous handler in effect. */
1829 push_float_handler (handler, old_handler)
1830 jmp_buf handler, old_handler;
1832 int was_handled = float_handled;
1836 bcopy ((char *) float_handler, (char *) old_handler,
1837 sizeof (float_handler));
1839 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1843 /* Restore the previous specification of whether and where to longjmp to
1844 when a floating arithmetic error happens. */
1847 pop_float_handler (handled, handler)
1851 float_handled = handled;
1853 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1856 /* Signals actually come here. */
1859 float_signal (signo)
1860 /* If this is missing, some compilers complain. */
1863 if (float_handled == 0)
1865 #if defined (USG) || defined (hpux)
1866 signal (SIGFPE, float_signal); /* re-enable the signal catcher */
1869 signal (SIGFPE, float_signal);
1870 longjmp (float_handler, 1);
1873 /* Handler for SIGPIPE. */
1877 /* If this is missing, some compilers complain. */
1880 fatal ("output pipe has been closed");
1883 /* Strip off a legitimate source ending from the input string NAME of
1884 length LEN. Rather than having to know the names used by all of
1885 our front ends, we strip off an ending of a period followed by one,
1886 two, or three characters. */
1889 strip_off_ending (name, len)
1893 if (len > 2 && name[len - 2] == '.')
1894 name[len - 2] = '\0';
1895 else if (len > 3 && name[len - 3] == '.')
1896 name[len - 3] = '\0';
1897 else if (len > 4 && name[len - 4] == '.')
1898 name[len - 4] = '\0';
1901 /* Output a quoted string. */
1903 output_quoted_string (asm_file, string)
1909 putc ('\"', asm_file);
1910 while ((c = *string++) != 0)
1912 if (c == '\"' || c == '\\')
1913 putc ('\\', asm_file);
1916 putc ('\"', asm_file);
1919 /* Output a file name in the form wanted by System V. */
1922 output_file_directive (asm_file, input_name)
1926 int len = strlen (input_name);
1927 char *na = input_name + len;
1929 /* NA gets INPUT_NAME sans directory names. */
1930 while (na > input_name)
1937 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1938 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
1940 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1941 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
1943 fprintf (asm_file, "\t.file\t");
1944 output_quoted_string (asm_file, na);
1945 fputc ('\n', asm_file);
1950 /* Routine to build language identifier for object file. */
1952 output_lang_identify (asm_out_file)
1955 int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
1956 char *s = (char *) alloca (len);
1957 sprintf (s, "__gnu_compiled_%s", lang_identify ());
1958 ASM_OUTPUT_LABEL (asm_out_file, s);
1961 /* Routine to open a dump file. */
1963 open_dump_file (base_name, suffix)
1968 char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1);
1970 strcpy (dumpname, base_name);
1971 strcat (dumpname, suffix);
1972 f = fopen (dumpname, "w");
1974 pfatal_with_name (dumpname);
1978 /* Compile an entire file of output from cpp, named NAME.
1979 Write a file of assembly output and various debugging dumps. */
1988 int name_specified = name != 0;
1990 if (dump_base_name == 0)
1991 dump_base_name = name ? name : "gccdump";
1995 integration_time = 0;
2003 local_alloc_time = 0;
2004 global_alloc_time = 0;
2007 shorten_branch_time = 0;
2013 /* Open input file. */
2015 if (name == 0 || !strcmp (name, "-"))
2021 finput = fopen (name, "r");
2023 pfatal_with_name (name);
2025 #ifdef IO_BUFFER_SIZE
2026 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE);
2029 /* Initialize data in various passes. */
2034 /* Some of these really don't need to be called when generating bytecode,
2035 but the options would have to be parsed first to know that. -bson */
2037 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
2038 || debug_info_level == DINFO_LEVEL_VERBOSE);
2040 init_decl_processing ();
2048 if (flag_caller_saves)
2049 init_caller_save ();
2051 /* If auxiliary info generation is desired, open the output file.
2052 This goes in the same directory as the source file--unlike
2053 all the other output files. */
2054 if (flag_gen_aux_info)
2056 aux_info_file = fopen (aux_info_file_name, "w");
2057 if (aux_info_file == 0)
2058 pfatal_with_name (aux_info_file_name);
2061 /* If rtl dump desired, open the output file. */
2063 rtl_dump_file = open_dump_file (dump_base_name, ".rtl");
2065 /* If jump_opt dump desired, open the output file. */
2067 jump_opt_dump_file = open_dump_file (dump_base_name, ".jump");
2069 /* If cse dump desired, open the output file. */
2071 cse_dump_file = open_dump_file (dump_base_name, ".cse");
2073 /* If loop dump desired, open the output file. */
2075 loop_dump_file = open_dump_file (dump_base_name, ".loop");
2077 /* If cse2 dump desired, open the output file. */
2079 cse2_dump_file = open_dump_file (dump_base_name, ".cse2");
2081 /* If flow dump desired, open the output file. */
2083 flow_dump_file = open_dump_file (dump_base_name, ".flow");
2085 /* If combine dump desired, open the output file. */
2087 combine_dump_file = open_dump_file (dump_base_name, ".combine");
2089 /* If scheduling dump desired, open the output file. */
2091 sched_dump_file = open_dump_file (dump_base_name, ".sched");
2093 /* If local_reg dump desired, open the output file. */
2095 local_reg_dump_file = open_dump_file (dump_base_name, ".lreg");
2097 /* If global_reg dump desired, open the output file. */
2098 if (global_reg_dump)
2099 global_reg_dump_file = open_dump_file (dump_base_name, ".greg");
2101 /* If 2nd scheduling dump desired, open the output file. */
2103 sched2_dump_file = open_dump_file (dump_base_name, ".sched2");
2105 /* If jump2_opt dump desired, open the output file. */
2107 jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2");
2109 /* If dbr_sched dump desired, open the output file. */
2111 dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr");
2115 /* If stack_reg dump desired, open the output file. */
2117 stack_reg_dump_file = open_dump_file (dump_base_name, ".stack");
2121 /* Open assembler code output file. */
2123 if (! name_specified && asm_file_name == 0)
2124 asm_out_file = stdout;
2127 int len = strlen (dump_base_name);
2128 register char *dumpname = (char *) xmalloc (len + 6);
2129 strcpy (dumpname, dump_base_name);
2130 strip_off_ending (dumpname, len);
2131 strcat (dumpname, ".s");
2132 if (asm_file_name == 0)
2134 asm_file_name = (char *) xmalloc (strlen (dumpname) + 1);
2135 strcpy (asm_file_name, dumpname);
2137 if (!strcmp (asm_file_name, "-"))
2138 asm_out_file = stdout;
2140 asm_out_file = fopen (asm_file_name, "w");
2141 if (asm_out_file == 0)
2142 pfatal_with_name (asm_file_name);
2145 #ifdef IO_BUFFER_SIZE
2146 setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
2147 _IOFBF, IO_BUFFER_SIZE);
2150 input_filename = name;
2152 /* Put an entry on the input file stack for the main input file. */
2154 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
2155 input_file_stack->next = 0;
2156 input_file_stack->name = input_filename;
2158 /* Perform language-specific initialization.
2159 This may set main_input_filename. */
2162 /* If the input doesn't start with a #line, use the input name
2163 as the official input file name. */
2164 if (main_input_filename == 0)
2165 main_input_filename = name;
2167 if (!output_bytecode)
2169 ASM_FILE_START (asm_out_file);
2172 /* Output something to inform GDB that this compilation was by GCC. Also
2173 serves to tell GDB file consists of bytecodes. */
2174 if (output_bytecode)
2175 fprintf (asm_out_file, "bc_gcc2_compiled.:\n");
2178 #ifndef ASM_IDENTIFY_GCC
2179 fprintf (asm_out_file, "gcc2_compiled.:\n");
2181 ASM_IDENTIFY_GCC (asm_out_file);
2185 /* Output something to identify which front-end produced this file. */
2186 #ifdef ASM_IDENTIFY_LANGUAGE
2187 ASM_IDENTIFY_LANGUAGE (asm_out_file);
2190 if (output_bytecode)
2192 if (profile_flag || profile_block_flag)
2193 error ("profiling not supported in bytecode compilation");
2197 /* ??? Note: There used to be a conditional here
2198 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2199 This was to guarantee separation between gcc_compiled. and
2200 the first function, for the sake of dbx on Suns.
2201 However, having the extra zero here confused the Emacs
2202 code for unexec, and might confuse other programs too.
2203 Therefore, I took out that change.
2204 In future versions we should find another way to solve
2205 that dbx problem. -- rms, 23 May 93. */
2207 /* Don't let the first function fall at the same address
2208 as gcc_compiled., if profiling. */
2209 if (profile_flag || profile_block_flag)
2210 assemble_zeros (UNITS_PER_WORD);
2213 /* If dbx symbol table desired, initialize writing it
2214 and output the predefined types. */
2215 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2216 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2217 TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
2220 #ifdef SDB_DEBUGGING_INFO
2221 if (write_symbols == SDB_DEBUG)
2222 TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
2225 #ifdef DWARF_DEBUGGING_INFO
2226 if (write_symbols == DWARF_DEBUG)
2227 TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
2230 /* Initialize yet another pass. */
2232 if (!output_bytecode)
2233 init_final (main_input_filename);
2235 start_time = get_run_time ();
2237 /* Call the parser, which parses the entire file
2238 (calling rest_of_compilation for each function). */
2240 if (yyparse () != 0)
2242 if (errorcount == 0)
2243 fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)");
2245 /* In case there were missing closebraces,
2246 get us back to the global binding level. */
2247 while (! global_bindings_p ())
2251 /* Compilation is now finished except for writing
2252 what's left of the symbol table output. */
2254 parse_time += get_run_time () - start_time;
2256 parse_time -= integration_time;
2257 parse_time -= varconst_time;
2259 globals = getdecls ();
2261 /* Really define vars that have had only a tentative definition.
2262 Really output inline functions that must actually be callable
2263 and have not been output so far. */
2266 int len = list_length (globals);
2267 tree *vec = (tree *) alloca (sizeof (tree) * len);
2272 /* Process the decls in reverse order--earliest first.
2273 Put them into VEC from back to front, then take out from front. */
2275 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
2276 vec[len - i - 1] = decl;
2278 for (i = 0; i < len; i++)
2282 /* We're not deferring this any longer. */
2283 DECL_DEFER_OUTPUT (decl) = 0;
2285 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
2286 && incomplete_decl_finalize_hook != 0)
2287 (*incomplete_decl_finalize_hook) (decl);
2290 /* Now emit any global variables or functions that we have been putting
2291 off. We need to loop in case one of the things emitted here
2292 references another one which comes earlier in the list. */
2296 for (i = 0; i < len; i++)
2300 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
2303 /* Don't write out static consts, unless we still need them.
2305 We also keep static consts if not optimizing (for debugging).
2306 ??? They might be better written into the debug information.
2307 This is possible when using DWARF.
2309 A language processor that wants static constants to be always
2310 written out (even if it is not used) is responsible for
2311 calling rest_of_decl_compilation itself. E.g. the C front-end
2312 calls rest_of_decl_compilation from finish_decl.
2313 One motivation for this is that is conventional in some
2314 environments to write things like:
2315 static const char rcsid[] = "... version string ...";
2316 intending to force the string to be in the executable.
2318 A language processor that would prefer to have unneeded
2319 static constants "optimized away" would just defer writing
2320 them out until here. E.g. C++ does this, because static
2321 constants are often defined in header files.
2323 ??? A tempting alternative (for both C and C++) would be
2324 to force a constant to be written if and only if it is
2325 defined in a main file, as opposed to an include file. */
2327 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2328 && (! TREE_READONLY (decl)
2329 || TREE_PUBLIC (decl)
2331 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2334 rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
2337 if (TREE_CODE (decl) == FUNCTION_DECL
2338 && DECL_INITIAL (decl) != 0
2339 && DECL_SAVED_INSNS (decl) != 0
2340 && (flag_keep_inline_functions
2341 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2344 temporary_allocation ();
2345 output_inline_function (decl);
2346 permanent_allocation (1);
2351 for (i = 0; i < len; i++)
2355 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2356 && ! TREE_ASM_WRITTEN (decl))
2357 /* Cancel the RTL for this decl so that, if debugging info
2358 output for global variables is still to come,
2359 this one will be omitted. */
2360 DECL_RTL (decl) = NULL;
2362 /* Warn about any function
2363 declared static but not defined.
2364 We don't warn about variables,
2365 because many programs have static variables
2366 that exist only to get some text into the object file. */
2367 if (TREE_CODE (decl) == FUNCTION_DECL
2369 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
2370 && DECL_INITIAL (decl) == 0
2371 && DECL_EXTERNAL (decl)
2372 && ! TREE_PUBLIC (decl))
2374 pedwarn_with_decl (decl,
2375 "`%s' declared `static' but never defined");
2376 /* This symbol is effectively an "extern" declaration now. */
2377 TREE_PUBLIC (decl) = 1;
2378 assemble_external (decl);
2381 /* Warn about static fns or vars defined but not used,
2382 but not about inline functions or static consts
2383 since defining those in header files is normal practice. */
2385 && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
2386 || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
2387 && ! DECL_IN_SYSTEM_HEADER (decl)
2388 && ! DECL_EXTERNAL (decl)
2389 && ! TREE_PUBLIC (decl)
2390 && ! TREE_USED (decl)
2391 && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
2392 /* The TREE_USED bit for file-scope decls
2393 is kept in the identifier, to handle multiple
2394 external decls in different scopes. */
2395 && ! TREE_USED (DECL_NAME (decl)))
2396 warning_with_decl (decl, "`%s' defined but not used");
2398 #ifdef SDB_DEBUGGING_INFO
2399 /* The COFF linker can move initialized global vars to the end.
2400 And that can screw up the symbol ordering.
2401 By putting the symbols in that order to begin with,
2402 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2403 if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
2404 && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
2405 && ! DECL_EXTERNAL (decl)
2406 && DECL_RTL (decl) != 0)
2407 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2409 /* Output COFF information for non-global
2410 file-scope initialized variables. */
2411 if (write_symbols == SDB_DEBUG
2412 && TREE_CODE (decl) == VAR_DECL
2413 && DECL_INITIAL (decl)
2414 && ! DECL_EXTERNAL (decl)
2415 && DECL_RTL (decl) != 0
2416 && GET_CODE (DECL_RTL (decl)) == MEM)
2417 TIMEVAR (symout_time, sdbout_toplevel_data (decl));
2418 #endif /* SDB_DEBUGGING_INFO */
2419 #ifdef DWARF_DEBUGGING_INFO
2420 /* Output DWARF information for file-scope tentative data object
2421 declarations, file-scope (extern) function declarations (which
2422 had no corresponding body) and file-scope tagged type declarations
2423 and definitions which have not yet been forced out. */
2425 if (write_symbols == DWARF_DEBUG
2426 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
2427 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
2432 /* Write out any pending weak symbol declarations. */
2436 /* Do dbx symbols */
2437 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2438 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2439 TIMEVAR (symout_time,
2441 dbxout_finish (asm_out_file, main_input_filename);
2445 #ifdef DWARF_DEBUGGING_INFO
2446 if (write_symbols == DWARF_DEBUG)
2447 TIMEVAR (symout_time,
2453 /* Output some stuff at end of file if nec. */
2455 if (!output_bytecode)
2457 end_final (main_input_filename);
2460 ASM_FILE_END (asm_out_file);
2464 /* Language-specific end of compilation actions. */
2468 if (output_bytecode)
2469 bc_write_file (asm_out_file);
2471 /* Close the dump files. */
2473 if (flag_gen_aux_info)
2475 fclose (aux_info_file);
2477 unlink (aux_info_file_name);
2481 fclose (rtl_dump_file);
2484 fclose (jump_opt_dump_file);
2487 fclose (cse_dump_file);
2490 fclose (loop_dump_file);
2493 fclose (cse2_dump_file);
2496 fclose (flow_dump_file);
2500 dump_combine_total_stats (combine_dump_file);
2501 fclose (combine_dump_file);
2505 fclose (sched_dump_file);
2508 fclose (local_reg_dump_file);
2510 if (global_reg_dump)
2511 fclose (global_reg_dump_file);
2514 fclose (sched2_dump_file);
2517 fclose (jump2_opt_dump_file);
2520 fclose (dbr_sched_dump_file);
2524 fclose (stack_reg_dump_file);
2527 /* Close non-debugging input and output files. Take special care to note
2528 whether fclose returns an error, since the pages might still be on the
2529 buffer chain while the file is open. */
2532 if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)
2533 fatal_io_error (asm_file_name);
2535 /* Print the times. */
2539 fprintf (stderr,"\n");
2540 print_time ("parse", parse_time);
2542 if (!output_bytecode)
2544 print_time ("integration", integration_time);
2545 print_time ("jump", jump_time);
2546 print_time ("cse", cse_time);
2547 print_time ("loop", loop_time);
2548 print_time ("cse2", cse2_time);
2549 print_time ("flow", flow_time);
2550 print_time ("combine", combine_time);
2551 print_time ("sched", sched_time);
2552 print_time ("local-alloc", local_alloc_time);
2553 print_time ("global-alloc", global_alloc_time);
2554 print_time ("sched2", sched2_time);
2555 print_time ("dbranch", dbr_sched_time);
2556 print_time ("shorten-branch", shorten_branch_time);
2557 print_time ("stack-reg", stack_reg_time);
2558 print_time ("final", final_time);
2559 print_time ("varconst", varconst_time);
2560 print_time ("symout", symout_time);
2561 print_time ("dump", dump_time);
2566 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2567 and TYPE_DECL nodes.
2569 This does nothing for local (non-static) variables.
2570 Otherwise, it sets up the RTL and outputs any assembler code
2571 (label definition, storage allocation and initialization).
2573 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2574 the assembler symbol name to be used. TOP_LEVEL is nonzero
2575 if this declaration is not within a function. */
2578 rest_of_decl_compilation (decl, asmspec, top_level, at_end)
2584 /* Declarations of variables, and of functions defined elsewhere. */
2586 /* The most obvious approach, to put an #ifndef around where
2587 this macro is used, doesn't work since it's inside a macro call. */
2588 #ifndef ASM_FINISH_DECLARE_OBJECT
2589 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2592 /* Forward declarations for nested functions are not "external",
2593 but we need to treat them as if they were. */
2594 if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
2595 || TREE_CODE (decl) == FUNCTION_DECL)
2596 TIMEVAR (varconst_time,
2598 make_decl_rtl (decl, asmspec, top_level);
2599 /* Initialized extern variable exists to be replaced
2600 with its value, or represents something that will be
2601 output in another file. */
2602 if (! (TREE_CODE (decl) == VAR_DECL
2603 && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
2604 && DECL_INITIAL (decl) != 0
2605 && DECL_INITIAL (decl) != error_mark_node))
2606 /* Don't output anything
2607 when a tentative file-scope definition is seen.
2608 But at end of compilation, do output code for them. */
2609 if (! (! at_end && top_level
2610 && (DECL_INITIAL (decl) == 0
2611 || DECL_INITIAL (decl) == error_mark_node)))
2612 assemble_variable (decl, top_level, at_end, 0);
2613 if (decl == last_assemble_variable_decl)
2615 ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
2619 else if (DECL_REGISTER (decl) && asmspec != 0)
2621 if (decode_reg_name (asmspec) >= 0)
2623 DECL_RTL (decl) = 0;
2624 make_decl_rtl (decl, asmspec, top_level);
2627 error ("invalid register name `%s' for register variable", asmspec);
2629 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2630 else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2631 && TREE_CODE (decl) == TYPE_DECL)
2632 TIMEVAR (symout_time, dbxout_symbol (decl, 0));
2634 #ifdef SDB_DEBUGGING_INFO
2635 else if (write_symbols == SDB_DEBUG && top_level
2636 && TREE_CODE (decl) == TYPE_DECL)
2637 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2641 /* Called after finishing a record, union or enumeral type. */
2644 rest_of_type_compilation (type, toplev)
2648 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2649 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2650 TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
2652 #ifdef SDB_DEBUGGING_INFO
2653 if (write_symbols == SDB_DEBUG)
2654 TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
2658 /* This is called from finish_function (within yyparse)
2659 after each top-level definition is parsed.
2660 It is supposed to compile that function or variable
2661 and output the assembler code for it.
2662 After we return, the tree storage is freed. */
2665 rest_of_compilation (decl)
2669 int start_time = get_run_time ();
2671 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2672 to be restored after we finish compiling the function
2673 (for use when compiling inline calls to this function). */
2674 tree saved_block_tree = 0;
2675 /* Likewise, for DECL_ARGUMENTS. */
2676 tree saved_arguments = 0;
2679 if (output_bytecode)
2682 /* If we are reconsidering an inline function
2683 at the end of compilation, skip the stuff for making it inline. */
2685 if (DECL_SAVED_INSNS (decl) == 0)
2690 /* If requested, consider whether to make this function inline. */
2691 if (DECL_INLINE (decl) || flag_inline_functions)
2692 TIMEVAR (integration_time,
2694 lose = function_cannot_inline_p (decl);
2695 if (lose || ! optimize)
2697 if (warn_inline && DECL_INLINE (decl))
2698 warning_with_decl (decl, lose);
2699 DECL_ABSTRACT_ORIGIN (decl) = 0;
2700 /* Don't really compile an extern inline function.
2701 If we can't make it inline, pretend
2702 it was only declared. */
2703 if (DECL_EXTERNAL (decl))
2705 DECL_INITIAL (decl) = 0;
2706 goto exit_rest_of_compilation;
2710 /* ??? Note that this has the effect of making it look
2711 like "inline" was specified for a function if we choose
2712 to inline it. This isn't quite right, but it's
2713 probably not worth the trouble to fix. */
2714 inlineable = DECL_INLINE (decl) = 1;
2717 insns = get_insns ();
2719 /* Dump the rtl code if we are dumping rtl. */
2724 fprintf (rtl_dump_file, "\n;; Function %s\n\n",
2725 IDENTIFIER_POINTER (DECL_NAME (decl)));
2726 if (DECL_SAVED_INSNS (decl))
2727 fprintf (rtl_dump_file, ";; (integrable)\n\n");
2728 print_rtl (rtl_dump_file, insns);
2729 fflush (rtl_dump_file);
2732 /* If function is inline, and we don't yet know whether to
2733 compile it by itself, defer decision till end of compilation.
2734 finish_compilation will call rest_of_compilation again
2735 for those functions that need to be output. Also defer those
2736 functions that we are supposed to defer. We cannot defer
2737 functions containing nested functions since the nested function
2738 data is in our non-saved obstack. */
2740 if (! current_function_contains_functions
2741 && (DECL_DEFER_OUTPUT (decl)
2742 || (DECL_INLINE (decl)
2743 && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
2744 && ! flag_keep_inline_functions)
2745 || DECL_EXTERNAL (decl)))))
2747 DECL_DEFER_OUTPUT (decl) = 1;
2749 /* If -Wreturn-type, we have to do a bit of compilation. */
2750 if (! warn_return_type)
2752 #ifdef DWARF_DEBUGGING_INFO
2753 /* Generate the DWARF info for the "abstract" instance
2754 of a function which we may later generate inlined and/or
2755 out-of-line instances of. */
2756 if (write_symbols == DWARF_DEBUG)
2758 set_decl_abstract_flags (decl, 1);
2759 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2760 set_decl_abstract_flags (decl, 0);
2763 TIMEVAR (integration_time, save_for_inline_nocopy (decl));
2764 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
2765 goto exit_rest_of_compilation;
2769 /* If we have to compile the function now, save its rtl and subdecls
2770 so that its compilation will not affect what others get. */
2771 if (inlineable || DECL_DEFER_OUTPUT (decl))
2773 #ifdef DWARF_DEBUGGING_INFO
2774 /* Generate the DWARF info for the "abstract" instance of
2775 a function which we will generate an out-of-line instance
2776 of almost immediately (and which we may also later generate
2777 various inlined instances of). */
2778 if (write_symbols == DWARF_DEBUG)
2780 set_decl_abstract_flags (decl, 1);
2781 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2782 set_decl_abstract_flags (decl, 0);
2785 saved_block_tree = DECL_INITIAL (decl);
2786 saved_arguments = DECL_ARGUMENTS (decl);
2787 TIMEVAR (integration_time, save_for_inline_copying (decl));
2788 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
2791 /* If specified extern inline but we aren't inlining it, we are
2793 if (DECL_INLINE (decl) && DECL_EXTERNAL (decl))
2794 goto exit_rest_of_compilation;
2797 if (! DECL_DEFER_OUTPUT (decl))
2798 TREE_ASM_WRITTEN (decl) = 1;
2800 /* Now that integrate will no longer see our rtl, we need not distinguish
2801 between the return value of this function and the return value of called
2803 rtx_equal_function_value_matters = 0;
2805 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
2806 if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
2808 goto exit_rest_of_compilation;
2811 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2812 Note that that may have been done above, in save_for_inline_copying.
2813 The call to resume_temporary_allocation near the end of this function
2814 goes back to the usual state of affairs. */
2816 rtl_in_current_obstack ();
2819 /* If we are doing position-independent code generation, now
2820 is the time to output special prologues and epilogues.
2821 We do not want to do this earlier, because it just clutters
2822 up inline functions with meaningless insns. */
2827 insns = get_insns ();
2829 /* Copy any shared structure that should not be shared. */
2831 unshare_all_rtl (insns);
2833 /* Instantiate all virtual registers. */
2835 instantiate_virtual_regs (current_function_decl, get_insns ());
2837 /* See if we have allocated stack slots that are not directly addressable.
2838 If so, scan all the insns and create explicit address computation
2839 for all references to such slots. */
2840 /* fixup_stack_slots (); */
2842 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
2843 are initialized and to compute whether control can drop off the end
2845 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2846 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2848 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
2849 if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
2850 goto exit_rest_of_compilation;
2852 /* Dump rtl code after jump, if we are doing that. */
2857 fprintf (jump_opt_dump_file, "\n;; Function %s\n\n",
2858 IDENTIFIER_POINTER (DECL_NAME (decl)));
2859 print_rtl (jump_opt_dump_file, insns);
2860 fflush (jump_opt_dump_file);
2863 /* Perform common subexpression elimination.
2864 Nonzero value from `cse_main' means that jumps were simplified
2865 and some code may now be unreachable, so do
2866 jump optimization again. */
2871 fprintf (cse_dump_file, "\n;; Function %s\n\n",
2872 IDENTIFIER_POINTER (DECL_NAME (decl)));
2877 TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
2879 if (flag_thread_jumps)
2880 /* Hacks by tiemann & kenner. */
2881 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
2883 TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
2885 TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ()));
2887 if (tem || optimize > 1)
2888 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2891 /* Dump rtl code after cse, if we are doing that. */
2896 print_rtl (cse_dump_file, insns);
2897 fflush (cse_dump_file);
2903 fprintf (loop_dump_file, "\n;; Function %s\n\n",
2904 IDENTIFIER_POINTER (DECL_NAME (decl)));
2907 /* Move constant computations out of loops. */
2913 loop_optimize (insns, loop_dump_file);
2917 /* Dump rtl code after loop opt, if we are doing that. */
2922 print_rtl (loop_dump_file, insns);
2923 fflush (loop_dump_file);
2929 fprintf (cse2_dump_file, "\n;; Function %s\n\n",
2930 IDENTIFIER_POINTER (DECL_NAME (decl)));
2933 if (optimize > 0 && flag_rerun_cse_after_loop)
2935 /* Running another jump optimization pass before the second
2936 cse pass sometimes simplifies the RTL enough to allow
2937 the second CSE pass to do a better job. Jump_optimize can change
2938 max_reg_num so we must rerun reg_scan afterwards.
2939 ??? Rework to not call reg_scan so often. */
2940 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2941 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2943 TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
2944 TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
2945 1, cse2_dump_file));
2947 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2950 if (optimize > 0 && flag_thread_jumps)
2951 /* This pass of jump threading straightens out code
2952 that was kinked by loop optimization. */
2953 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
2955 /* Dump rtl code after cse, if we are doing that. */
2960 print_rtl (cse2_dump_file, insns);
2961 fflush (cse2_dump_file);
2964 /* We are no longer anticipating cse in this function, at least. */
2966 cse_not_expected = 1;
2968 /* Now we choose between stupid (pcc-like) register allocation
2969 (if we got the -noreg switch and not -opt)
2970 and smart register allocation. */
2972 if (optimize > 0) /* Stupid allocation probably won't work */
2973 obey_regdecls = 0; /* if optimizations being done. */
2977 /* Print function header into flow dump now
2978 because doing the flow analysis makes some of the dump. */
2983 fprintf (flow_dump_file, "\n;; Function %s\n\n",
2984 IDENTIFIER_POINTER (DECL_NAME (decl)));
2991 regclass (insns, max_reg_num ());
2992 stupid_life_analysis (insns, max_reg_num (),
2998 /* Do control and data flow analysis,
2999 and write some of the results to dump file. */
3001 TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (),
3003 if (warn_uninitialized)
3005 uninitialized_vars_warning (DECL_INITIAL (decl));
3006 setjmp_args_warning ();
3010 /* Dump rtl after flow analysis. */
3015 print_rtl (flow_dump_file, insns);
3016 fflush (flow_dump_file);
3019 /* If -opt, try combining insns through substitution. */
3022 TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
3024 /* Dump rtl code after insn combination. */
3029 fprintf (combine_dump_file, "\n;; Function %s\n\n",
3030 IDENTIFIER_POINTER (DECL_NAME (decl)));
3031 dump_combine_stats (combine_dump_file);
3032 print_rtl (combine_dump_file, insns);
3033 fflush (combine_dump_file);
3036 /* Print function header into sched dump now
3037 because doing the sched analysis makes some of the dump. */
3042 fprintf (sched_dump_file, "\n;; Function %s\n\n",
3043 IDENTIFIER_POINTER (DECL_NAME (decl)));
3046 if (optimize > 0 && flag_schedule_insns)
3048 /* Do control and data sched analysis,
3049 and write some of the results to dump file. */
3051 TIMEVAR (sched_time, schedule_insns (sched_dump_file));
3054 /* Dump rtl after instruction scheduling. */
3059 print_rtl (sched_dump_file, insns);
3060 fflush (sched_dump_file);
3063 /* Unless we did stupid register allocation,
3064 allocate pseudo-regs that are used only within 1 basic block. */
3067 TIMEVAR (local_alloc_time,
3069 regclass (insns, max_reg_num ());
3073 /* Dump rtl code after allocating regs within basic blocks. */
3078 fprintf (local_reg_dump_file, "\n;; Function %s\n\n",
3079 IDENTIFIER_POINTER (DECL_NAME (decl)));
3080 dump_flow_info (local_reg_dump_file);
3081 dump_local_alloc (local_reg_dump_file);
3082 print_rtl (local_reg_dump_file, insns);
3083 fflush (local_reg_dump_file);
3086 if (global_reg_dump)
3088 fprintf (global_reg_dump_file, "\n;; Function %s\n\n",
3089 IDENTIFIER_POINTER (DECL_NAME (decl))));
3091 /* Unless we did stupid register allocation,
3092 allocate remaining pseudo-regs, then do the reload pass
3093 fixing up any insns that are invalid. */
3095 TIMEVAR (global_alloc_time,
3098 failure = global_alloc (global_reg_dump_file);
3100 failure = reload (insns, 0, global_reg_dump_file);
3103 if (global_reg_dump)
3106 dump_global_regs (global_reg_dump_file);
3107 print_rtl (global_reg_dump_file, insns);
3108 fflush (global_reg_dump_file);
3112 goto exit_rest_of_compilation;
3114 reload_completed = 1;
3116 /* On some machines, the prologue and epilogue code, or parts thereof,
3117 can be represented as RTL. Doing so lets us schedule insns between
3118 it and the rest of the code and also allows delayed branch
3119 scheduling to operate in the epilogue. */
3121 thread_prologue_and_epilogue_insns (insns);
3123 if (optimize > 0 && flag_schedule_insns_after_reload)
3128 fprintf (sched2_dump_file, "\n;; Function %s\n\n",
3129 IDENTIFIER_POINTER (DECL_NAME (decl)));
3132 /* Do control and data sched analysis again,
3133 and write some more of the results to dump file. */
3135 TIMEVAR (sched2_time, schedule_insns (sched2_dump_file));
3137 /* Dump rtl after post-reorder instruction scheduling. */
3142 print_rtl (sched2_dump_file, insns);
3143 fflush (sched2_dump_file);
3147 #ifdef LEAF_REGISTERS
3149 if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
3153 /* One more attempt to remove jumps to .+1
3154 left by dead-store-elimination.
3155 Also do cross-jumping this time
3156 and delete no-op move insns. */
3160 TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0));
3163 /* Dump rtl code after jump, if we are doing that. */
3168 fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n",
3169 IDENTIFIER_POINTER (DECL_NAME (decl)));
3170 print_rtl (jump2_opt_dump_file, insns);
3171 fflush (jump2_opt_dump_file);
3174 /* If a machine dependent reorganization is needed, call it. */
3175 #ifdef MACHINE_DEPENDENT_REORG
3176 MACHINE_DEPENDENT_REORG (insns);
3179 /* If a scheduling pass for delayed branches is to be done,
3180 call the scheduling code. */
3183 if (optimize > 0 && flag_delayed_branch)
3185 TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file));
3190 fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n",
3191 IDENTIFIER_POINTER (DECL_NAME (decl)));
3192 print_rtl (dbr_sched_dump_file, insns);
3193 fflush (dbr_sched_dump_file);
3199 /* Shorten branches. */
3200 TIMEVAR (shorten_branch_time,
3202 shorten_branches (get_insns ());
3206 TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file));
3211 fprintf (stack_reg_dump_file, "\n;; Function %s\n\n",
3212 IDENTIFIER_POINTER (DECL_NAME (decl)));
3213 print_rtl (stack_reg_dump_file, insns);
3214 fflush (stack_reg_dump_file);
3219 /* Now turn the rtl into assembler code. */
3221 TIMEVAR (final_time,
3226 /* Get the function's name, as described by its RTL.
3227 This may be different from the DECL_NAME name used
3228 in the source file. */
3230 x = DECL_RTL (decl);
3231 if (GET_CODE (x) != MEM)
3234 if (GET_CODE (x) != SYMBOL_REF)
3236 fnname = XSTR (x, 0);
3238 assemble_start_function (decl, fnname);
3239 final_start_function (insns, asm_out_file, optimize);
3240 final (insns, asm_out_file, optimize, 0);
3241 final_end_function (insns, asm_out_file, optimize);
3242 assemble_end_function (decl, fnname);
3243 fflush (asm_out_file);
3246 /* Write DBX symbols if requested */
3248 /* Note that for those inline functions where we don't initially
3249 know for certain that we will be generating an out-of-line copy,
3250 the first invocation of this routine (rest_of_compilation) will
3251 skip over this code by doing a `goto exit_rest_of_compilation;'.
3252 Later on, finish_compilation will call rest_of_compilation again
3253 for those inline functions that need to have out-of-line copies
3254 generated. During that call, we *will* be routed past here. */
3256 #ifdef DBX_DEBUGGING_INFO
3257 if (write_symbols == DBX_DEBUG)
3258 TIMEVAR (symout_time, dbxout_function (decl));
3261 #ifdef DWARF_DEBUGGING_INFO
3262 if (write_symbols == DWARF_DEBUG)
3263 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3266 exit_rest_of_compilation:
3268 /* In case the function was not output,
3269 don't leave any temporary anonymous types
3270 queued up for sdb output. */
3271 #ifdef SDB_DEBUGGING_INFO
3272 if (write_symbols == SDB_DEBUG)
3273 sdbout_types (NULL_TREE);
3276 /* Put back the tree of subblocks and list of arguments
3277 from before we copied them.
3278 Code generation and the output of debugging info may have modified
3279 the copy, but the original is unchanged. */
3281 if (saved_block_tree != 0)
3282 DECL_INITIAL (decl) = saved_block_tree;
3283 if (saved_arguments != 0)
3284 DECL_ARGUMENTS (decl) = saved_arguments;
3286 reload_completed = 0;
3288 /* Clear out the insn_length contents now that they are no longer valid. */
3289 init_insn_lengths ();
3291 /* Clear out the real_constant_chain before some of the rtx's
3292 it runs through become garbage. */
3294 clear_const_double_mem ();
3296 /* Cancel the effect of rtl_in_current_obstack. */
3298 resume_temporary_allocation ();
3300 /* Show no temporary slots allocated. */
3304 /* The parsing time is all the time spent in yyparse
3305 *except* what is spent in this function. */
3307 parse_time -= get_run_time () - start_time;
3310 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3311 Exit code is 35 if can't open files, 34 if fatal error,
3312 33 if had nonfatal errors, else success. */
3315 main (argc, argv, envp)
3322 int flag_print_mem = 0;
3323 int version_flag = 0;
3326 /* save in case md file wants to emit args as a comment. */
3330 p = argv[0] + strlen (argv[0]);
3331 while (p != argv[0] && p[-1] != '/'
3332 #ifdef DIR_SEPARATOR
3333 && p[-1] != DIR_SEPARATOR
3340 /* Get rid of any avoidable limit on stack size. */
3344 /* Set the stack limit huge so that alloca does not fail. */
3345 getrlimit (RLIMIT_STACK, &rlim);
3346 rlim.rlim_cur = rlim.rlim_max;
3347 setrlimit (RLIMIT_STACK, &rlim);
3349 #endif /* RLIMIT_STACK */
3351 signal (SIGFPE, float_signal);
3354 signal (SIGPIPE, pipe_closed);
3357 decl_printable_name = decl_name;
3358 lang_expand_expr = (struct rtx_def *(*)()) do_abort;
3359 interim_eh_hook = interim_eh;
3361 /* Initialize whether `char' is signed. */
3362 flag_signed_char = DEFAULT_SIGNED_CHAR;
3363 #ifdef DEFAULT_SHORT_ENUMS
3364 /* Initialize how much space enums occupy, by default. */
3365 flag_short_enums = DEFAULT_SHORT_ENUMS;
3368 /* Scan to see what optimization level has been specified. That will
3369 determine the default value of many flags. */
3370 for (i = 1; i < argc; i++)
3372 if (!strcmp (argv[i], "-O"))
3376 else if (argv[i][0] == '-' && argv[i][1] == 'O')
3378 /* Handle -O2, -O3, -O69, ... */
3379 char *p = &argv[i][2];
3383 if (! (c >= '0' && c <= '9'))
3386 optimize = atoi (&argv[i][2]);
3390 obey_regdecls = (optimize == 0);
3400 flag_thread_jumps = 1;
3402 flag_delayed_branch = 1;
3404 #ifdef CAN_DEBUG_WITHOUT_FP
3405 flag_omit_frame_pointer = 1;
3411 flag_cse_follow_jumps = 1;
3412 flag_cse_skip_blocks = 1;
3413 flag_expensive_optimizations = 1;
3414 flag_strength_reduce = 1;
3415 flag_rerun_cse_after_loop = 1;
3416 flag_caller_saves = 1;
3418 #ifdef INSN_SCHEDULING
3419 flag_schedule_insns = 1;
3420 flag_schedule_insns_after_reload = 1;
3426 flag_inline_functions = 1;
3429 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3432 set_target_switch ("");
3434 #ifdef OPTIMIZATION_OPTIONS
3435 /* Allow default optimizations to be specified on a per-machine basis. */
3436 OPTIMIZATION_OPTIONS (optimize);
3439 /* Initialize register usage now so switches may override. */
3442 for (i = 1; i < argc; i++)
3445 /* If this is a language-specific option,
3446 decode it in a language-specific way. */
3447 for (j = 0; lang_options[j] != 0; j++)
3448 if (!strncmp (argv[i], lang_options[j],
3449 strlen (lang_options[j])))
3451 if (lang_options[j] != 0)
3452 /* If the option is valid for *some* language,
3453 treat it as valid even if this language doesn't understand it. */
3454 lang_decode_option (argv[i]);
3455 else if (argv[i][0] == '-' && argv[i][1] != 0)
3457 register char *str = argv[i] + 1;
3462 set_target_switch (&str[1]);
3463 else if (!strcmp (str, "dumpbase"))
3465 dump_base_name = argv[++i];
3467 else if (str[0] == 'd')
3469 register char *p = &str[1];
3477 global_reg_dump = 1;
3483 cse_dump = 1, cse2_dump = 1;
3501 global_reg_dump = 1;
3519 flag_print_asm_name = 1;
3541 rtl_dump_and_exit = 1;
3545 else if (str[0] == 'f')
3547 register char *p = &str[1];
3550 /* Some kind of -f option.
3551 P's value is the option sans `-f'.
3552 Search for it in the table of options. */
3555 !found && j < sizeof (f_options) / sizeof (f_options[0]);
3558 if (!strcmp (p, f_options[j].string))
3560 *f_options[j].variable = f_options[j].on_value;
3561 /* A goto here would be cleaner,
3562 but breaks the vax pcc. */
3565 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3566 && ! strcmp (p+3, f_options[j].string))
3568 *f_options[j].variable = ! f_options[j].on_value;
3575 else if (!strncmp (p, "fixed-", 6))
3576 fix_register (&p[6], 1, 1);
3577 else if (!strncmp (p, "call-used-", 10))
3578 fix_register (&p[10], 0, 1);
3579 else if (!strncmp (p, "call-saved-", 11))
3580 fix_register (&p[11], 0, 0);
3582 error ("Invalid option `%s'", argv[i]);
3584 else if (str[0] == 'O')
3586 register char *p = str+1;
3587 while (*p && *p >= '0' && *p <= '9')
3592 error ("Invalid option `%s'", argv[i]);
3594 else if (!strcmp (str, "pedantic"))
3596 else if (!strcmp (str, "pedantic-errors"))
3597 flag_pedantic_errors = pedantic = 1;
3598 else if (!strcmp (str, "quiet"))
3600 else if (!strcmp (str, "version"))
3602 else if (!strcmp (str, "w"))
3603 inhibit_warnings = 1;
3604 else if (!strcmp (str, "W"))
3607 /* We save the value of warn_uninitialized, since if they put
3608 -Wuninitialized on the command line, we need to generate a
3609 warning about not using it without also specifying -O. */
3610 if (warn_uninitialized != 1)
3611 warn_uninitialized = 2;
3613 else if (str[0] == 'W')
3615 register char *p = &str[1];
3618 /* Some kind of -W option.
3619 P's value is the option sans `-W'.
3620 Search for it in the table of options. */
3623 !found && j < sizeof (W_options) / sizeof (W_options[0]);
3626 if (!strcmp (p, W_options[j].string))
3628 *W_options[j].variable = W_options[j].on_value;
3629 /* A goto here would be cleaner,
3630 but breaks the vax pcc. */
3633 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3634 && ! strcmp (p+3, W_options[j].string))
3636 *W_options[j].variable = ! W_options[j].on_value;
3643 else if (!strncmp (p, "id-clash-", 9))
3649 if (*endp >= '0' && *endp <= '9')
3653 error ("Invalid option `%s'", argv[i]);
3658 id_clash_len = atoi (str + 10);
3661 else if (!strncmp (p, "larger-than-", 12))
3663 char *endp = p + 12;
3667 if (*endp >= '0' && *endp <= '9')
3671 error ("Invalid option `%s'", argv[i]);
3672 goto larger_than_lose;
3675 warn_larger_than = 1;
3676 larger_than_size = atoi (str + 13);
3680 error ("Invalid option `%s'", argv[i]);
3682 else if (!strcmp (str, "p"))
3686 else if (!strcmp (str, "a"))
3688 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3689 warning ("`-a' option (basic block profile) not supported");
3691 profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
3694 else if (!strcmp (str, "ax"))
3696 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3697 warning ("`-ax' option (jump profiling) not supported");
3699 profile_block_flag = (!profile_block_flag
3700 || profile_block_flag == 2) ? 2 : 3;
3703 else if (str[0] == 'g')
3710 while (*p && (*p < '0' || *p > '9'))
3714 while (*q && (*q >= '0' && *q <= '9'))
3719 level = 2; /* default debugging info level */
3720 if (*q || level > 3)
3722 warning ("invalid debug level specification in option: `-%s'",
3724 warning ("no debugging information will be generated");
3728 /* If more than one debugging type is supported,
3729 you must define PREFERRED_DEBUGGING_TYPE
3730 to choose a format in a system-dependent way. */
3731 /* This is one long line cause VAXC can't handle a \-newline. */
3732 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
3733 #ifdef PREFERRED_DEBUGGING_TYPE
3734 if (!strncmp (str, "ggdb", len))
3735 write_symbols = PREFERRED_DEBUGGING_TYPE;
3736 #else /* no PREFERRED_DEBUGGING_TYPE */
3737 You Lose! You must define PREFERRED_DEBUGGING_TYPE!
3738 #endif /* no PREFERRED_DEBUGGING_TYPE */
3739 #endif /* More than one debugger format enabled. */
3740 #ifdef DBX_DEBUGGING_INFO
3741 if (write_symbols != NO_DEBUG)
3743 else if (!strncmp (str, "ggdb", len))
3744 write_symbols = DBX_DEBUG;
3745 else if (!strncmp (str, "gstabs", len))
3746 write_symbols = DBX_DEBUG;
3747 else if (!strncmp (str, "gstabs+", len))
3748 write_symbols = DBX_DEBUG;
3750 /* Always enable extensions for -ggdb or -gstabs+,
3751 always disable for -gstabs.
3752 For plain -g, use system-specific default. */
3753 if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len)
3755 use_gnu_debug_info_extensions = 1;
3756 else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len)
3758 use_gnu_debug_info_extensions = 1;
3759 else if (write_symbols == DBX_DEBUG
3760 && !strncmp (str, "gstabs", len) && len >= 2)
3761 use_gnu_debug_info_extensions = 0;
3763 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3764 #endif /* DBX_DEBUGGING_INFO */
3765 #ifdef DWARF_DEBUGGING_INFO
3766 if (write_symbols != NO_DEBUG)
3768 else if (!strncmp (str, "g", len))
3769 write_symbols = DWARF_DEBUG;
3770 else if (!strncmp (str, "ggdb", len))
3771 write_symbols = DWARF_DEBUG;
3772 else if (!strncmp (str, "gdwarf", len))
3773 write_symbols = DWARF_DEBUG;
3775 /* Always enable extensions for -ggdb or -gdwarf+,
3776 always disable for -gdwarf.
3777 For plain -g, use system-specific default. */
3778 if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len)
3780 use_gnu_debug_info_extensions = 1;
3781 else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+"))
3782 use_gnu_debug_info_extensions = 1;
3783 else if (write_symbols == DWARF_DEBUG
3784 && !strncmp (str, "gdwarf", len) && len >= 2)
3785 use_gnu_debug_info_extensions = 0;
3787 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3789 #ifdef SDB_DEBUGGING_INFO
3790 if (write_symbols != NO_DEBUG)
3792 else if (!strncmp (str, "g", len))
3793 write_symbols = SDB_DEBUG;
3794 else if (!strncmp (str, "gdb", len))
3795 write_symbols = SDB_DEBUG;
3796 else if (!strncmp (str, "gcoff", len))
3797 write_symbols = SDB_DEBUG;
3798 #endif /* SDB_DEBUGGING_INFO */
3799 #ifdef XCOFF_DEBUGGING_INFO
3800 if (write_symbols != NO_DEBUG)
3802 else if (!strncmp (str, "g", len))
3803 write_symbols = XCOFF_DEBUG;
3804 else if (!strncmp (str, "ggdb", len))
3805 write_symbols = XCOFF_DEBUG;
3806 else if (!strncmp (str, "gxcoff", len))
3807 write_symbols = XCOFF_DEBUG;
3809 /* Always enable extensions for -ggdb or -gxcoff+,
3810 always disable for -gxcoff.
3811 For plain -g, use system-specific default. */
3812 if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len)
3814 use_gnu_debug_info_extensions = 1;
3815 else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+"))
3816 use_gnu_debug_info_extensions = 1;
3817 else if (write_symbols == XCOFF_DEBUG
3818 && !strncmp (str, "gxcoff", len) && len >= 2)
3819 use_gnu_debug_info_extensions = 0;
3821 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3823 if (write_symbols == NO_DEBUG)
3824 warning ("`-%s' not supported by this configuration of GCC",
3826 else if (level == 0)
3827 write_symbols = NO_DEBUG;
3829 debug_info_level = (enum debug_info_level) level;
3831 else if (!strcmp (str, "o"))
3833 asm_file_name = argv[++i];
3835 else if (str[0] == 'G')
3837 g_switch_set = TRUE;
3838 g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]);
3840 else if (!strncmp (str, "aux-info", 8))
3842 flag_gen_aux_info = 1;
3843 aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
3846 error ("Invalid option `%s'", argv[i]);
3848 else if (argv[i][0] == '+')
3849 error ("Invalid option `%s'", argv[i]);
3854 /* Initialize for bytecode output. A good idea to do this as soon as
3855 possible after the "-f" options have been parsed. */
3856 if (output_bytecode)
3858 #ifndef TARGET_SUPPORTS_BYTECODE
3859 /* Just die with a fatal error if not supported */
3860 fatal ("-fbytecode not supporter for this target");
3868 /* Inlining does not work if not optimizing,
3869 so force it not to be done. */
3873 /* The c_decode_option and lang_decode_option functions set
3874 this to `2' if -Wall is used, so we can avoid giving out
3875 lots of errors for people who don't realize what -Wall does. */
3876 if (warn_uninitialized == 1)
3877 warning ("-Wuninitialized is not supported without -O");
3880 #if defined(DWARF_DEBUGGING_INFO)
3881 if (write_symbols == DWARF_DEBUG
3882 && strcmp (language_string, "GNU C++") == 0)
3884 warning ("-g option not supported for C++ on systems using the DWARF debugging format");
3885 write_symbols = NO_DEBUG;
3887 #endif /* defined(DWARF_DEBUGGING_INFO) */
3889 #ifdef OVERRIDE_OPTIONS
3890 /* Some machines may reject certain combinations of options. */
3894 if (profile_block_flag == 3)
3896 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
3897 profile_block_flag = 2;
3900 /* Unrolling all loops implies that standard loop unrolling must also
3902 if (flag_unroll_all_loops)
3903 flag_unroll_loops = 1;
3904 /* Loop unrolling requires that strength_reduction be on also. Silently
3905 turn on strength reduction here if it isn't already on. Also, the loop
3906 unrolling code assumes that cse will be run after loop, so that must
3907 be turned on also. */
3908 if (flag_unroll_loops)
3910 flag_strength_reduce = 1;
3911 flag_rerun_cse_after_loop = 1;
3914 /* Warn about options that are not supported on this machine. */
3915 #ifndef INSN_SCHEDULING
3916 if (flag_schedule_insns || flag_schedule_insns_after_reload)
3917 warning ("instruction scheduling not supported on this target machine");
3920 if (flag_delayed_branch)
3921 warning ("this target machine does not have delayed branches");
3924 /* If we are in verbose mode, write out the version and maybe all the
3925 option flags in use. */
3928 fprintf (stderr, "%s version %s", language_string, version_string);
3929 #ifdef TARGET_VERSION
3934 #define __VERSION__ "[unknown]"
3936 fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__);
3938 fprintf (stderr, " compiled by CC.\n");
3941 print_switch_values ();
3944 compile_file (filename);
3946 #if !defined(OS2) && !defined(VMS) && !defined(_WIN32)
3949 char *lim = (char *) sbrk (0);
3951 fprintf (stderr, "Data size %d.\n",
3952 lim - (char *) &environ);
3956 system ("ps -l 1>&2");
3959 #endif /* not USG */
3961 #endif /* not OS2 and not VMS and not _WIN32 */
3964 exit (FATAL_EXIT_CODE);
3966 exit (FATAL_EXIT_CODE);
3967 exit (SUCCESS_EXIT_CODE);
3971 /* Decode -m switches. */
3973 /* Here is a table, controlled by the tm.h file, listing each -m switch
3974 and which bits in `target_switches' it should set or clear.
3975 If VALUE is positive, it is bits to set.
3976 If VALUE is negative, -VALUE is bits to clear.
3977 (The sign bit is not used so there is no confusion.) */
3979 struct {char *name; int value;} target_switches []
3982 /* This table is similar, but allows the switch to have a value. */
3984 #ifdef TARGET_OPTIONS
3985 struct {char *prefix; char ** variable;} target_options []
3989 /* Decode the switch -mNAME. */
3992 set_target_switch (name)
3998 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
3999 if (!strcmp (target_switches[j].name, name))
4001 if (target_switches[j].value < 0)
4002 target_flags &= ~-target_switches[j].value;
4004 target_flags |= target_switches[j].value;
4008 #ifdef TARGET_OPTIONS
4010 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
4012 int len = strlen (target_options[j].prefix);
4013 if (!strncmp (target_options[j].prefix, name, len))
4015 *target_options[j].variable = name + len;
4022 error ("Invalid option `%s'", name);
4025 /* Variable used for communication between the following two routines. */
4027 static int line_position;
4029 /* Print an option value and adjust the position in the line. */
4032 print_single_switch (type, name)
4035 fprintf (stderr, " %s%s", type, name);
4037 line_position += strlen (type) + strlen (name) + 1;
4039 if (line_position > 65)
4041 fprintf (stderr, "\n\t");
4046 /* Print default target switches for -version. */
4049 print_switch_values ()
4053 fprintf (stderr, "enabled:");
4056 for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
4057 if (*f_options[j].variable == f_options[j].on_value)
4058 print_single_switch ("-f", f_options[j].string);
4060 for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++)
4061 if (*W_options[j].variable == W_options[j].on_value)
4062 print_single_switch ("-W", W_options[j].string);
4064 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
4065 if (target_switches[j].name[0] != '\0'
4066 && target_switches[j].value > 0
4067 && ((target_switches[j].value & target_flags)
4068 == target_switches[j].value))
4069 print_single_switch ("-m", target_switches[j].name);
4071 fprintf (stderr, "\n");