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 /* Highest label number used at the end of reload. */
277 int max_label_num_after_reload;
279 /* Nonzero if generating code to do profiling. */
281 int profile_flag = 0;
283 /* Nonzero if generating code to do profiling on a line-by-line basis. */
285 int profile_block_flag;
287 /* Nonzero for -pedantic switch: warn about anything
288 that standard spec forbids. */
292 /* Temporarily suppress certain warnings.
293 This is set while reading code from a system header file. */
295 int in_system_header = 0;
297 /* Nonzero means do stupid register allocation.
298 Currently, this is 1 if `optimize' is 0. */
300 int obey_regdecls = 0;
302 /* Don't print functions as they are compiled and don't print
303 times taken by the various passes. -quiet. */
309 /* Nonzero means `char' should be signed. */
311 int flag_signed_char;
313 /* Nonzero means give an enum type only as many bytes as it needs. */
315 int flag_short_enums;
317 /* Nonzero for -fcaller-saves: allocate values in regs that need to
318 be saved across function calls, if that produces overall better code.
319 Optional now, so people can test it. */
321 #ifdef DEFAULT_CALLER_SAVES
322 int flag_caller_saves = 1;
324 int flag_caller_saves = 0;
327 /* Nonzero if structures and unions should be returned in memory.
329 This should only be defined if compatibility with another compiler or
330 with an ABI is needed, because it results in slower code. */
332 #ifndef DEFAULT_PCC_STRUCT_RETURN
333 #define DEFAULT_PCC_STRUCT_RETURN 1
336 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
338 int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
340 /* Nonzero for -fforce-mem: load memory value into a register
341 before arithmetic on it. This makes better cse but slower compilation. */
343 int flag_force_mem = 0;
345 /* Nonzero for -fforce-addr: load memory address into a register before
346 reference to memory. This makes better cse but slower compilation. */
348 int flag_force_addr = 0;
350 /* Nonzero for -fdefer-pop: don't pop args after each function call;
351 instead save them up to pop many calls' args with one insns. */
353 int flag_defer_pop = 0;
355 /* Nonzero for -ffloat-store: don't allocate floats and doubles
356 in extended-precision registers. */
358 int flag_float_store = 0;
360 /* Nonzero for -fcse-follow-jumps:
361 have cse follow jumps to do a more extensive job. */
363 int flag_cse_follow_jumps;
365 /* Nonzero for -fcse-skip-blocks:
366 have cse follow a branch around a block. */
367 int flag_cse_skip_blocks;
369 /* Nonzero for -fexpensive-optimizations:
370 perform miscellaneous relatively-expensive optimizations. */
371 int flag_expensive_optimizations;
373 /* Nonzero for -fthread-jumps:
374 have jump optimize output of loop. */
376 int flag_thread_jumps;
378 /* Nonzero enables strength-reduction in loop.c. */
380 int flag_strength_reduce = 0;
382 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
383 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
384 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
387 int flag_unroll_loops;
389 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
390 This is generally not a win. */
392 int flag_unroll_all_loops;
394 /* Nonzero for -fwritable-strings:
395 store string constants in data segment and don't uniquize them. */
397 int flag_writable_strings = 0;
399 /* Nonzero means don't put addresses of constant functions in registers.
400 Used for compiling the Unix kernel, where strange substitutions are
401 done on the assembly output. */
403 int flag_no_function_cse = 0;
405 /* Nonzero for -fomit-frame-pointer:
406 don't make a frame pointer in simple functions that don't require one. */
408 int flag_omit_frame_pointer = 0;
410 /* Nonzero means place each function into its own section on those platforms
411 which support arbitrary section names and unlimited numbers of sections. */
413 int flag_function_sections = 0;
415 /* Nonzero to inhibit use of define_optimization peephole opts. */
417 int flag_no_peephole = 0;
419 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
420 operations in the interest of optimization. For example it allows
421 GCC to assume arguments to sqrt are nonnegative numbers, allowing
422 faster code for sqrt to be generated. */
424 int flag_fast_math = 0;
426 /* Nonzero means all references through pointers are volatile. */
430 /* Nonzero means treat all global and extern variables as global. */
432 int flag_volatile_global;
434 /* Nonzero means just do syntax checking; don't output anything. */
436 int flag_syntax_only = 0;
438 /* Nonzero means to rerun cse after loop optimization. This increases
439 compilation time about 20% and picks up a few more common expressions. */
441 static int flag_rerun_cse_after_loop;
443 /* Nonzero for -finline-functions: ok to inline functions that look like
444 good inline candidates. */
446 int flag_inline_functions;
448 /* Nonzero for -fkeep-inline-functions: even if we make a function
449 go inline everywhere, keep its definition around for debugging
452 int flag_keep_inline_functions;
454 /* Nonzero means that functions will not be inlined. */
458 /* Nonzero means we should be saving declaration info into a .X file. */
460 int flag_gen_aux_info = 0;
462 /* Specified name of aux-info file. */
464 static char *aux_info_file_name;
466 /* Nonzero means make the text shared if supported. */
468 int flag_shared_data;
470 /* Nonzero means schedule into delayed branch slots if supported. */
472 int flag_delayed_branch;
474 /* Nonzero means to run cleanups after CALL_EXPRs. */
476 int flag_short_temps;
478 /* Nonzero if we are compiling pure (sharable) code.
479 Value is 1 if we are doing reasonable (i.e. simple
480 offset into offset table) pic. Value is 2 if we can
481 only perform register offsets. */
485 /* Nonzero means place uninitialized global data in the bss section. */
489 /* Nonzero means pretend it is OK to examine bits of target floats,
490 even if that isn't true. The resulting code will have incorrect constants,
491 but the same series of instructions that the native compiler would make. */
493 int flag_pretend_float;
495 /* Nonzero means change certain warnings into errors.
496 Usually these are warnings about failure to conform to some standard. */
498 int flag_pedantic_errors = 0;
500 /* flag_schedule_insns means schedule insns within basic blocks (before
502 flag_schedule_insns_after_reload means schedule insns after
505 int flag_schedule_insns = 0;
506 int flag_schedule_insns_after_reload = 0;
508 /* -finhibit-size-directive inhibits output of .size for ELF.
509 This is used only for compiling crtstuff.c,
510 and it may be extended to other effects
511 needed for crtstuff.c on other systems. */
512 int flag_inhibit_size_directive = 0;
514 /* -fverbose-asm causes extra commentary information to be produced in
515 the generated assembly code (to make it more readable). This option
516 is generally only of use to those who actually need to read the
517 generated assembly code (perhaps while debugging the compiler itself). */
519 int flag_verbose_asm = 0;
521 /* -fgnu-linker specifies use of the GNU linker for initializations.
522 (Or, more generally, a linker that handles initializations.)
523 -fno-gnu-linker says that collect2 will be used. */
525 int flag_gnu_linker = 0;
527 int flag_gnu_linker = 1;
530 /* Tag all structures with __attribute__(packed) */
531 int flag_pack_struct = 0;
533 /* Table of language-independent -f options.
534 STRING is the option name. VARIABLE is the address of the variable.
535 ON_VALUE is the value to store in VARIABLE
536 if `-fSTRING' is seen as an option.
537 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
539 struct { char *string; int *variable; int on_value;} f_options[] =
541 {"float-store", &flag_float_store, 1},
542 {"volatile", &flag_volatile, 1},
543 {"volatile-global", &flag_volatile_global, 1},
544 {"defer-pop", &flag_defer_pop, 1},
545 {"omit-frame-pointer", &flag_omit_frame_pointer, 1},
546 {"cse-follow-jumps", &flag_cse_follow_jumps, 1},
547 {"cse-skip-blocks", &flag_cse_skip_blocks, 1},
548 {"expensive-optimizations", &flag_expensive_optimizations, 1},
549 {"thread-jumps", &flag_thread_jumps, 1},
550 {"strength-reduce", &flag_strength_reduce, 1},
551 {"unroll-loops", &flag_unroll_loops, 1},
552 {"unroll-all-loops", &flag_unroll_all_loops, 1},
553 {"writable-strings", &flag_writable_strings, 1},
554 {"peephole", &flag_no_peephole, 0},
555 {"force-mem", &flag_force_mem, 1},
556 {"force-addr", &flag_force_addr, 1},
557 {"function-cse", &flag_no_function_cse, 0},
558 {"inline-functions", &flag_inline_functions, 1},
559 {"keep-inline-functions", &flag_keep_inline_functions, 1},
560 {"inline", &flag_no_inline, 0},
561 {"syntax-only", &flag_syntax_only, 1},
562 {"shared-data", &flag_shared_data, 1},
563 {"caller-saves", &flag_caller_saves, 1},
564 {"pcc-struct-return", &flag_pcc_struct_return, 1},
565 {"reg-struct-return", &flag_pcc_struct_return, 0},
566 {"delayed-branch", &flag_delayed_branch, 1},
567 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1},
568 {"pretend-float", &flag_pretend_float, 1},
569 {"schedule-insns", &flag_schedule_insns, 1},
570 {"schedule-insns2", &flag_schedule_insns_after_reload, 1},
571 {"pic", &flag_pic, 1},
572 {"PIC", &flag_pic, 2},
573 {"fast-math", &flag_fast_math, 1},
574 {"common", &flag_no_common, 0},
575 {"inhibit-size-directive", &flag_inhibit_size_directive, 1},
576 {"function-sections", &flag_function_sections, 1},
577 {"verbose-asm", &flag_verbose_asm, 1},
578 {"gnu-linker", &flag_gnu_linker, 1},
579 {"pack-struct", &flag_pack_struct, 1},
580 {"bytecode", &output_bytecode, 1}
583 /* Table of language-specific options. */
585 char *lang_options[] =
588 "-fallow-single-precision",
590 "-fsigned-bitfields",
591 "-funsigned-bitfields",
592 "-fno-signed-bitfields",
593 "-fno-unsigned-bitfields",
597 "-fno-unsigned-char",
609 "-fno-cond-mismatch",
610 "-fdollars-in-identifiers",
611 "-fno-dollars-in-identifiers",
620 "-Wbad-function-cast",
621 "-Wno-bad-function-cast",
625 "-Wno-char-subscripts",
639 "-Wno-missing-braces",
640 "-Wmissing-declarations",
641 "-Wno-missing-declarations",
642 "-Wmissing-prototypes",
643 "-Wno-missing-prototypes",
645 "-Wno-nested-externs",
649 "-Wno-pointer-arith",
651 "-Wno-redundant-decls",
654 "-Wstrict-prototypes",
655 "-Wno-strict-prototypes",
661 "-Wno-write-strings",
663 /* these are for obj c */
679 /* Options controlling warnings */
681 /* Don't print warning messages. -w. */
683 int inhibit_warnings = 0;
685 /* Print various extra warnings. -W. */
687 int extra_warnings = 0;
689 /* Treat warnings as errors. -Werror. */
691 int warnings_are_errors = 0;
693 /* Nonzero to warn about unused local variables. */
697 /* Nonzero to warn about variables used before they are initialized. */
699 int warn_uninitialized;
701 /* Nonzero means warn about all declarations which shadow others. */
705 /* Warn if a switch on an enum fails to have a case for every enum value. */
709 /* Nonzero means warn about function definitions that default the return type
710 or that use a null return and have a return-type other than void. */
712 int warn_return_type;
714 /* Nonzero means warn about pointer casts that increase the required
715 alignment of the target type (and might therefore lead to a crash
716 due to a misaligned access). */
720 /* Nonzero means warn about any identifiers that match in the first N
721 characters. The value N is in `id_clash_len'. */
724 unsigned id_clash_len;
726 /* Nonzero means warn about any objects definitions whose size is larger
727 than N bytes. Also want about function definitions whose returned
728 values are larger than N bytes. The value N is in `larger_than_size'. */
730 int warn_larger_than;
731 unsigned larger_than_size;
733 /* Nonzero means warn if inline function is too large. */
737 /* Warn if a function returns an aggregate,
738 since there are often incompatible calling conventions for doing this. */
740 int warn_aggregate_return;
742 /* Likewise for -W. */
744 struct { char *string; int *variable; int on_value;} W_options[] =
746 {"unused", &warn_unused, 1},
747 {"error", &warnings_are_errors, 1},
748 {"shadow", &warn_shadow, 1},
749 {"switch", &warn_switch, 1},
750 {"aggregate-return", &warn_aggregate_return, 1},
751 {"cast-align", &warn_cast_align, 1},
752 {"uninitialized", &warn_uninitialized, 1},
753 {"inline", &warn_inline, 1}
756 /* Output files for assembler code (real compiler output)
757 and debugging dumps. */
762 FILE *jump_opt_dump_file;
764 FILE *loop_dump_file;
765 FILE *cse2_dump_file;
766 FILE *flow_dump_file;
767 FILE *combine_dump_file;
768 FILE *sched_dump_file;
769 FILE *local_reg_dump_file;
770 FILE *global_reg_dump_file;
771 FILE *sched2_dump_file;
772 FILE *jump2_opt_dump_file;
773 FILE *dbr_sched_dump_file;
774 FILE *stack_reg_dump_file;
776 /* Time accumulators, to count the total time spent in various passes. */
780 int integration_time;
788 int local_alloc_time;
789 int global_alloc_time;
792 int shorten_branch_time;
798 /* Return time used so far, in microseconds. */
808 struct rusage rusage;
813 int proc_system_time;
815 int child_system_time;
827 return (clock() * 1000);
828 #else /* not _WIN32 */
831 return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
834 getrusage (0, &rusage);
835 return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
836 + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
839 return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
845 #define TIMEVAR(VAR, BODY) \
846 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
849 print_time (str, total)
854 "time in %s: %d.%06d\n",
855 str, total / 1000000, total % 1000000);
858 /* Count an error or warning. Return 1 if the message should be printed. */
861 count_error (warningp)
864 if (warningp && inhibit_warnings)
867 if (warningp && !warnings_are_errors)
871 static int warning_message = 0;
873 if (warningp && !warning_message)
875 fprintf (stderr, "%s: warnings being treated as errors\n", progname);
884 /* Print a fatal error message. NAME is the text.
885 Also include a system error message based on `errno'. */
888 pfatal_with_name (name)
891 fprintf (stderr, "%s: ", progname);
893 exit (FATAL_EXIT_CODE);
897 fatal_io_error (name)
900 fprintf (stderr, "%s: %s: I/O error\n", progname, name);
901 exit (FATAL_EXIT_CODE);
904 /* Called to give a better error message for a bad insn rather than
905 just calling abort(). */
908 fatal_insn (message, insn)
912 if (!output_bytecode)
918 fflush (asm_out_file);
920 fflush (aux_info_file);
922 fflush (rtl_dump_file);
923 if (jump_opt_dump_file)
924 fflush (jump_opt_dump_file);
926 fflush (cse_dump_file);
928 fflush (loop_dump_file);
930 fflush (cse2_dump_file);
932 fflush (flow_dump_file);
933 if (combine_dump_file)
934 fflush (combine_dump_file);
936 fflush (sched_dump_file);
937 if (local_reg_dump_file)
938 fflush (local_reg_dump_file);
939 if (global_reg_dump_file)
940 fflush (global_reg_dump_file);
941 if (sched2_dump_file)
942 fflush (sched2_dump_file);
943 if (jump2_opt_dump_file)
944 fflush (jump2_opt_dump_file);
945 if (dbr_sched_dump_file)
946 fflush (dbr_sched_dump_file);
947 if (stack_reg_dump_file)
948 fflush (stack_reg_dump_file);
954 /* Called to give a better error message when we don't have an insn to match
955 what we are looking for or if the insn's constraints aren't satisfied,
956 rather than just calling abort(). */
959 fatal_insn_not_found (insn)
962 if (INSN_CODE (insn) < 0)
963 fatal_insn ("internal error--unrecognizable insn:", insn);
965 fatal_insn ("internal error--insn does not satisfy its constraints:", insn);
968 /* This is the default decl_printable_name function. */
971 decl_name (decl, kind)
975 return IDENTIFIER_POINTER (DECL_NAME (decl));
978 /* This is the default interim_eh_hook function. */
981 interim_eh (finalization)
984 /* Don't do anything by default. */
987 static int need_error_newline;
989 /* Function of last error message;
990 more generally, function such that if next error message is in it
991 then we don't have to mention the function name. */
992 static tree last_error_function = NULL;
994 /* Used to detect when input_file_stack has changed since last described. */
995 static int last_error_tick;
997 /* Called when the start of a function definition is parsed,
998 this function prints on stderr the name of the function. */
1001 announce_function (decl)
1007 if (rtl_dump_and_exit)
1008 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
1010 fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk));
1012 need_error_newline = 1;
1013 last_error_function = current_function_decl;
1017 /* The default function to print out name of current function that caused
1021 default_print_error_function (file)
1024 if (last_error_function != current_function_decl)
1026 char *kind = "function";
1027 if (current_function_decl != 0
1028 && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
1032 fprintf (stderr, "%s: ", file);
1034 if (current_function_decl == NULL)
1035 fprintf (stderr, "At top level:\n");
1038 char *name = (*decl_printable_name) (current_function_decl, &kind);
1039 fprintf (stderr, "In %s `%s':\n", kind, name);
1042 last_error_function = current_function_decl;
1046 /* Called by report_error_function to print out function name.
1047 * Default may be overridden by language front-ends. */
1049 void (*print_error_function) PROTO((char*)) = default_print_error_function;
1051 /* Prints out, if necessary, the name of the current function
1052 that caused an error. Called from all error and warning functions. */
1055 report_error_function (file)
1058 struct file_stack *p;
1060 if (need_error_newline)
1062 fprintf (stderr, "\n");
1063 need_error_newline = 0;
1066 (*print_error_function) (file);
1068 if (input_file_stack && input_file_stack->next != 0
1069 && input_file_stack_tick != last_error_tick
1070 && file == input_filename)
1072 fprintf (stderr, "In file included");
1073 for (p = input_file_stack->next; p; p = p->next)
1075 fprintf (stderr, " from %s:%d", p->name, p->line);
1077 fprintf (stderr, ",\n ");
1079 fprintf (stderr, ":\n");
1080 last_error_tick = input_file_stack_tick;
1084 /* Print a message. */
1087 vmessage (prefix, s, ap)
1093 fprintf (stderr, "%s: ", prefix);
1096 vfprintf (stderr, s, ap);
1099 HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT);
1100 HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT);
1101 HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT);
1102 HOST_WIDE_INT v4 = va_arg(ap, HOST_WIDE_INT);
1103 fprintf (stderr, s, v1, v2, v3, v4);
1108 /* Print a message relevant to line LINE of file FILE. */
1111 v_message_with_file_and_line (file, line, prefix, s, ap)
1119 fprintf (stderr, "%s:%d: ", file, line);
1121 fprintf (stderr, "%s: ", progname);
1123 vmessage (prefix, s, ap);
1124 fputc ('\n', stderr);
1127 /* Print a message relevant to the given DECL. */
1130 v_message_with_decl (decl, prefix, s, ap)
1138 fprintf (stderr, "%s:%d: ",
1139 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
1142 fprintf (stderr, "%s: ", prefix);
1144 /* Do magic to get around lack of varargs support for insertion
1145 of arguments into existing list. We know that the decl is first;
1146 we ass_u_me that it will be printed with "%s". */
1148 for (p = s; *p; ++p)
1152 if (*(p + 1) == '%')
1159 if (p > s) /* Print the left-hand substring. */
1161 char fmt[sizeof "%.255s"];
1164 if (width > 255L) width = 255L; /* arbitrary */
1165 sprintf (fmt, "%%.%lds", width);
1166 fprintf (stderr, fmt, s);
1169 if (*p == '%') /* Print the name. */
1171 char *n = (DECL_NAME (decl)
1172 ? (*decl_printable_name) (decl, &junk)
1178 if (isalpha (*(p - 1) & 0xFF))
1183 if (*p) /* Print the rest of the message. */
1184 vmessage ((char *)NULL, p, ap);
1186 fputc ('\n', stderr);
1189 /* Figure file and line of the given INSN. */
1192 file_and_line_for_asm (insn, pfile, pline)
1197 rtx body = PATTERN (insn);
1200 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1201 if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
1202 asmop = SET_SRC (body);
1203 else if (GET_CODE (body) == ASM_OPERANDS)
1205 else if (GET_CODE (body) == PARALLEL
1206 && GET_CODE (XVECEXP (body, 0, 0)) == SET)
1207 asmop = SET_SRC (XVECEXP (body, 0, 0));
1208 else if (GET_CODE (body) == PARALLEL
1209 && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
1210 asmop = XVECEXP (body, 0, 0);
1216 *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
1217 *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
1221 *pfile = input_filename;
1226 /* Report an error at line LINE of file FILE. */
1229 v_error_with_file_and_line (file, line, s, ap)
1236 report_error_function (file);
1237 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1241 error_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1253 file = va_arg (ap, char *);
1254 line = va_arg (ap, int);
1255 s = va_arg (ap, char *);
1258 v_error_with_file_and_line (file, line, s, ap);
1262 /* Report an error at the declaration DECL.
1263 S is a format string which uses %s to substitute the declaration
1264 name; subsequent substitutions are a la printf. */
1267 v_error_with_decl (decl, s, ap)
1273 report_error_function (DECL_SOURCE_FILE (decl));
1274 v_message_with_decl (decl, (char *)NULL, s, ap);
1278 error_with_decl VPROTO((tree decl, char *s, ...))
1289 decl = va_arg (ap, tree);
1290 s = va_arg (ap, char *);
1293 v_error_with_decl (decl, s, ap);
1297 /* Report an error at the line number of the insn INSN.
1298 This is used only when INSN is an `asm' with operands,
1299 and each ASM_OPERANDS records its own source file and line. */
1302 v_error_for_asm (insn, s, ap)
1311 file_and_line_for_asm (insn, &file, &line);
1312 report_error_function (file);
1313 v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
1317 error_for_asm VPROTO((rtx insn, char *s, ...))
1328 insn = va_arg (ap, rtx);
1329 s = va_arg (ap, char *);
1332 v_error_for_asm (insn, s, ap);
1336 /* Report an error at the current line number. */
1343 v_error_with_file_and_line (input_filename, lineno, s, ap);
1347 error VPROTO((char *s, ...))
1357 s = va_arg (ap, char *);
1364 /* Report a fatal error at the current line number. */
1372 exit (FATAL_EXIT_CODE);
1376 fatal VPROTO((char *s, ...))
1386 s = va_arg (ap, char *);
1393 /* Report a warning at line LINE of file FILE. */
1396 v_warning_with_file_and_line (file, line, s, ap)
1402 if (count_error (1))
1404 report_error_function (file);
1405 v_message_with_file_and_line (file, line, "warning", s, ap);
1410 warning_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1422 file = va_arg (ap, char *);
1423 line = va_arg (ap, int);
1424 s = va_arg (ap, char *);
1427 v_warning_with_file_and_line (file, line, s, ap);
1431 /* Report a warning at the declaration DECL.
1432 S is a format string which uses %s to substitute the declaration
1433 name; subsequent substitutions are a la printf. */
1436 v_warning_with_decl (decl, s, ap)
1441 if (count_error (1))
1443 report_error_function (DECL_SOURCE_FILE (decl));
1444 v_message_with_decl (decl, "warning", s, ap);
1449 warning_with_decl VPROTO((tree decl, char *s, ...))
1460 decl = va_arg (ap, tree);
1461 s = va_arg (ap, char *);
1464 v_warning_with_decl (decl, s, ap);
1468 /* Report a warning at the line number of the insn INSN.
1469 This is used only when INSN is an `asm' with operands,
1470 and each ASM_OPERANDS records its own source file and line. */
1473 v_warning_for_asm (insn, s, ap)
1478 if (count_error (1))
1483 file_and_line_for_asm (insn, &file, &line);
1484 report_error_function (file);
1485 v_message_with_file_and_line (file, line, "warning", s, ap);
1490 warning_for_asm VPROTO((rtx insn, char *s, ...))
1501 insn = va_arg (ap, rtx);
1502 s = va_arg (ap, char *);
1505 v_warning_for_asm (insn, s, ap);
1509 /* Report a warning at the current line number. */
1516 v_warning_with_file_and_line (input_filename, lineno, s, ap);
1520 warning VPROTO((char *s, ...))
1530 s = va_arg (ap, char *);
1537 /* These functions issue either warnings or errors depending on
1538 -pedantic-errors. */
1545 if (flag_pedantic_errors)
1552 pedwarn VPROTO((char *s, ...))
1562 s = va_arg (ap, char *);
1570 v_pedwarn_with_decl (decl, s, ap)
1575 /* We don't want -pedantic-errors to cause the compilation to fail from
1576 "errors" in system header files. Sometimes fixincludes can't fix what's
1577 broken (eg: unsigned char bitfields - fixing it may change the alignment
1578 which will cause programs to mysteriously fail because the C library
1579 or kernel uses the original layout). There's no point in issuing a
1580 warning either, it's just unnecessary noise. */
1582 if (! DECL_IN_SYSTEM_HEADER (decl))
1584 if (flag_pedantic_errors)
1585 v_error_with_decl (decl, s, ap);
1587 v_warning_with_decl (decl, s, ap);
1592 pedwarn_with_decl VPROTO((tree decl, char *s, ...))
1603 decl = va_arg (ap, tree);
1604 s = va_arg (ap, char *);
1607 v_pedwarn_with_decl (decl, s, ap);
1612 v_pedwarn_with_file_and_line (file, line, s, ap)
1618 if (flag_pedantic_errors)
1619 v_error_with_file_and_line (file, line, s, ap);
1621 v_warning_with_file_and_line (file, line, s, ap);
1625 pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...))
1637 file = va_arg (ap, char *);
1638 line = va_arg (ap, int);
1639 s = va_arg (ap, char *);
1642 v_pedwarn_with_file_and_line (file, line, s, ap);
1646 /* Apologize for not implementing some feature. */
1655 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1657 fprintf (stderr, "%s: ", progname);
1658 vmessage ("sorry, not implemented", s, ap);
1659 fputc ('\n', stderr);
1663 sorry VPROTO((char *s, ...))
1673 s = va_arg (ap, char *);
1680 /* Apologize for not implementing some feature, then quit. */
1683 v_really_sorry (s, ap)
1689 fprintf (stderr, "%s:%d: ", input_filename, lineno);
1691 fprintf (stderr, "%s: ", progname);
1692 vmessage ("sorry, not implemented", s, ap);
1693 fatal (" (fatal)\n");
1697 really_sorry VPROTO((char *s, ...))
1707 s = va_arg (ap, char *);
1710 v_really_sorry (s, ap);
1714 /* More 'friendly' abort that prints the line and file.
1715 config.h can #define abort fancy_abort if you like that sort of thing.
1717 I don't think this is actually a good idea.
1718 Other sorts of crashes will look a certain way.
1719 It is a good thing if crashes from calling abort look the same way.
1725 fatal ("internal gcc abort");
1728 /* This calls abort and is used to avoid problems when abort if a macro.
1729 It is used when we need to pass the address of abort. */
1737 /* When `malloc.c' is compiled with `rcheck' defined,
1738 it calls this function to report clobberage. */
1746 /* Same as `malloc' but report error if no memory available. */
1752 register char *value = (char *) malloc (size);
1754 fatal ("virtual memory exhausted");
1758 /* Same as `realloc' but report error if no memory available. */
1761 xrealloc (ptr, size)
1765 char *result = (char *) realloc (ptr, size);
1767 fatal ("virtual memory exhausted");
1771 /* Same as `strdup' but report error if no memory available. */
1777 register char *result = (char *) malloc (strlen (s) + 1);
1780 fatal ("virtual memory exhausted");
1785 /* Return the logarithm of X, base 2, considering X unsigned,
1786 if X is a power of 2. Otherwise, returns -1.
1788 This should be used via the `exact_log2' macro. */
1792 register unsigned HOST_WIDE_INT x;
1794 register int log = 0;
1795 /* Test for 0 or a power of 2. */
1796 if (x == 0 || x != (x & -x))
1798 while ((x >>= 1) != 0)
1803 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1804 If X is 0, return -1.
1806 This should be used via the floor_log2 macro. */
1810 register unsigned HOST_WIDE_INT x;
1812 register int log = -1;
1820 jmp_buf float_handler;
1822 /* Specify where to longjmp to when a floating arithmetic error happens.
1823 If HANDLER is 0, it means don't handle the errors any more. */
1826 set_float_handler (handler)
1829 float_handled = (handler != 0);
1831 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1834 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
1835 error happens, pushing the previous specification into OLD_HANDLER.
1836 Return an indication of whether there was a previous handler in effect. */
1839 push_float_handler (handler, old_handler)
1840 jmp_buf handler, old_handler;
1842 int was_handled = float_handled;
1846 bcopy ((char *) float_handler, (char *) old_handler,
1847 sizeof (float_handler));
1849 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1853 /* Restore the previous specification of whether and where to longjmp to
1854 when a floating arithmetic error happens. */
1857 pop_float_handler (handled, handler)
1861 float_handled = handled;
1863 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
1866 /* Signals actually come here. */
1869 float_signal (signo)
1870 /* If this is missing, some compilers complain. */
1873 if (float_handled == 0)
1875 #if defined (USG) || defined (hpux)
1876 signal (SIGFPE, float_signal); /* re-enable the signal catcher */
1879 signal (SIGFPE, float_signal);
1880 longjmp (float_handler, 1);
1883 /* Handler for SIGPIPE. */
1887 /* If this is missing, some compilers complain. */
1890 fatal ("output pipe has been closed");
1893 /* Strip off a legitimate source ending from the input string NAME of
1894 length LEN. Rather than having to know the names used by all of
1895 our front ends, we strip off an ending of a period followed by one,
1896 two, or three characters. */
1899 strip_off_ending (name, len)
1903 if (len > 2 && name[len - 2] == '.')
1904 name[len - 2] = '\0';
1905 else if (len > 3 && name[len - 3] == '.')
1906 name[len - 3] = '\0';
1907 else if (len > 4 && name[len - 4] == '.')
1908 name[len - 4] = '\0';
1911 /* Output a quoted string. */
1913 output_quoted_string (asm_file, string)
1919 putc ('\"', asm_file);
1920 while ((c = *string++) != 0)
1922 if (c == '\"' || c == '\\')
1923 putc ('\\', asm_file);
1926 putc ('\"', asm_file);
1929 /* Output a file name in the form wanted by System V. */
1932 output_file_directive (asm_file, input_name)
1936 int len = strlen (input_name);
1937 char *na = input_name + len;
1939 /* NA gets INPUT_NAME sans directory names. */
1940 while (na > input_name)
1947 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1948 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
1950 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1951 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
1953 fprintf (asm_file, "\t.file\t");
1954 output_quoted_string (asm_file, na);
1955 fputc ('\n', asm_file);
1960 /* Routine to build language identifier for object file. */
1962 output_lang_identify (asm_out_file)
1965 int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
1966 char *s = (char *) alloca (len);
1967 sprintf (s, "__gnu_compiled_%s", lang_identify ());
1968 ASM_OUTPUT_LABEL (asm_out_file, s);
1971 /* Routine to open a dump file. */
1973 open_dump_file (base_name, suffix)
1978 char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1);
1980 strcpy (dumpname, base_name);
1981 strcat (dumpname, suffix);
1982 f = fopen (dumpname, "w");
1984 pfatal_with_name (dumpname);
1988 /* Compile an entire file of output from cpp, named NAME.
1989 Write a file of assembly output and various debugging dumps. */
1998 int name_specified = name != 0;
2000 if (dump_base_name == 0)
2001 dump_base_name = name ? name : "gccdump";
2005 integration_time = 0;
2013 local_alloc_time = 0;
2014 global_alloc_time = 0;
2017 shorten_branch_time = 0;
2023 /* Open input file. */
2025 if (name == 0 || !strcmp (name, "-"))
2031 finput = fopen (name, "r");
2033 pfatal_with_name (name);
2035 #ifdef IO_BUFFER_SIZE
2036 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE);
2039 /* Initialize data in various passes. */
2044 /* Some of these really don't need to be called when generating bytecode,
2045 but the options would have to be parsed first to know that. -bson */
2047 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
2048 || debug_info_level == DINFO_LEVEL_VERBOSE);
2050 init_decl_processing ();
2058 if (flag_caller_saves)
2059 init_caller_save ();
2061 /* If auxiliary info generation is desired, open the output file.
2062 This goes in the same directory as the source file--unlike
2063 all the other output files. */
2064 if (flag_gen_aux_info)
2066 aux_info_file = fopen (aux_info_file_name, "w");
2067 if (aux_info_file == 0)
2068 pfatal_with_name (aux_info_file_name);
2071 /* If rtl dump desired, open the output file. */
2073 rtl_dump_file = open_dump_file (dump_base_name, ".rtl");
2075 /* If jump_opt dump desired, open the output file. */
2077 jump_opt_dump_file = open_dump_file (dump_base_name, ".jump");
2079 /* If cse dump desired, open the output file. */
2081 cse_dump_file = open_dump_file (dump_base_name, ".cse");
2083 /* If loop dump desired, open the output file. */
2085 loop_dump_file = open_dump_file (dump_base_name, ".loop");
2087 /* If cse2 dump desired, open the output file. */
2089 cse2_dump_file = open_dump_file (dump_base_name, ".cse2");
2091 /* If flow dump desired, open the output file. */
2093 flow_dump_file = open_dump_file (dump_base_name, ".flow");
2095 /* If combine dump desired, open the output file. */
2097 combine_dump_file = open_dump_file (dump_base_name, ".combine");
2099 /* If scheduling dump desired, open the output file. */
2101 sched_dump_file = open_dump_file (dump_base_name, ".sched");
2103 /* If local_reg dump desired, open the output file. */
2105 local_reg_dump_file = open_dump_file (dump_base_name, ".lreg");
2107 /* If global_reg dump desired, open the output file. */
2108 if (global_reg_dump)
2109 global_reg_dump_file = open_dump_file (dump_base_name, ".greg");
2111 /* If 2nd scheduling dump desired, open the output file. */
2113 sched2_dump_file = open_dump_file (dump_base_name, ".sched2");
2115 /* If jump2_opt dump desired, open the output file. */
2117 jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2");
2119 /* If dbr_sched dump desired, open the output file. */
2121 dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr");
2125 /* If stack_reg dump desired, open the output file. */
2127 stack_reg_dump_file = open_dump_file (dump_base_name, ".stack");
2131 /* Open assembler code output file. */
2133 if (! name_specified && asm_file_name == 0)
2134 asm_out_file = stdout;
2137 int len = strlen (dump_base_name);
2138 register char *dumpname = (char *) xmalloc (len + 6);
2139 strcpy (dumpname, dump_base_name);
2140 strip_off_ending (dumpname, len);
2141 strcat (dumpname, ".s");
2142 if (asm_file_name == 0)
2144 asm_file_name = (char *) xmalloc (strlen (dumpname) + 1);
2145 strcpy (asm_file_name, dumpname);
2147 if (!strcmp (asm_file_name, "-"))
2148 asm_out_file = stdout;
2150 asm_out_file = fopen (asm_file_name, "w");
2151 if (asm_out_file == 0)
2152 pfatal_with_name (asm_file_name);
2155 #ifdef IO_BUFFER_SIZE
2156 setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
2157 _IOFBF, IO_BUFFER_SIZE);
2160 input_filename = name;
2162 /* Put an entry on the input file stack for the main input file. */
2164 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
2165 input_file_stack->next = 0;
2166 input_file_stack->name = input_filename;
2168 /* Perform language-specific initialization.
2169 This may set main_input_filename. */
2172 /* If the input doesn't start with a #line, use the input name
2173 as the official input file name. */
2174 if (main_input_filename == 0)
2175 main_input_filename = name;
2177 if (!output_bytecode)
2179 ASM_FILE_START (asm_out_file);
2182 /* Output something to inform GDB that this compilation was by GCC. Also
2183 serves to tell GDB file consists of bytecodes. */
2184 if (output_bytecode)
2185 fprintf (asm_out_file, "bc_gcc2_compiled.:\n");
2188 #ifndef ASM_IDENTIFY_GCC
2189 fprintf (asm_out_file, "gcc2_compiled.:\n");
2191 ASM_IDENTIFY_GCC (asm_out_file);
2195 /* Output something to identify which front-end produced this file. */
2196 #ifdef ASM_IDENTIFY_LANGUAGE
2197 ASM_IDENTIFY_LANGUAGE (asm_out_file);
2200 #ifndef ASM_OUTPUT_SECTION_NAME
2201 if (flag_function_sections)
2203 warning ("-ffunction-sections not supported for this target.");
2204 flag_function_sections = 0;
2208 if (flag_function_sections
2209 && (profile_flag || profile_block_flag))
2211 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2212 flag_function_sections = 0;
2215 if (flag_function_sections && write_symbols != NO_DEBUG)
2216 warning ("-ffunction-sections may affect debugging on some targets.");
2218 if (output_bytecode)
2220 if (profile_flag || profile_block_flag)
2221 error ("profiling not supported in bytecode compilation");
2225 /* ??? Note: There used to be a conditional here
2226 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2227 This was to guarantee separation between gcc_compiled. and
2228 the first function, for the sake of dbx on Suns.
2229 However, having the extra zero here confused the Emacs
2230 code for unexec, and might confuse other programs too.
2231 Therefore, I took out that change.
2232 In future versions we should find another way to solve
2233 that dbx problem. -- rms, 23 May 93. */
2235 /* Don't let the first function fall at the same address
2236 as gcc_compiled., if profiling. */
2237 if (profile_flag || profile_block_flag)
2238 assemble_zeros (UNITS_PER_WORD);
2241 /* If dbx symbol table desired, initialize writing it
2242 and output the predefined types. */
2243 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2244 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2245 TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
2248 #ifdef SDB_DEBUGGING_INFO
2249 if (write_symbols == SDB_DEBUG)
2250 TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
2253 #ifdef DWARF_DEBUGGING_INFO
2254 if (write_symbols == DWARF_DEBUG)
2255 TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
2258 /* Initialize yet another pass. */
2260 if (!output_bytecode)
2261 init_final (main_input_filename);
2263 start_time = get_run_time ();
2265 /* Call the parser, which parses the entire file
2266 (calling rest_of_compilation for each function). */
2268 if (yyparse () != 0)
2270 if (errorcount == 0)
2271 fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)");
2273 /* In case there were missing closebraces,
2274 get us back to the global binding level. */
2275 while (! global_bindings_p ())
2279 /* Compilation is now finished except for writing
2280 what's left of the symbol table output. */
2282 parse_time += get_run_time () - start_time;
2284 parse_time -= integration_time;
2285 parse_time -= varconst_time;
2287 globals = getdecls ();
2289 /* Really define vars that have had only a tentative definition.
2290 Really output inline functions that must actually be callable
2291 and have not been output so far. */
2294 int len = list_length (globals);
2295 tree *vec = (tree *) alloca (sizeof (tree) * len);
2300 /* Process the decls in reverse order--earliest first.
2301 Put them into VEC from back to front, then take out from front. */
2303 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
2304 vec[len - i - 1] = decl;
2306 for (i = 0; i < len; i++)
2310 /* We're not deferring this any longer. */
2311 DECL_DEFER_OUTPUT (decl) = 0;
2313 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
2314 && incomplete_decl_finalize_hook != 0)
2315 (*incomplete_decl_finalize_hook) (decl);
2318 /* Now emit any global variables or functions that we have been putting
2319 off. We need to loop in case one of the things emitted here
2320 references another one which comes earlier in the list. */
2324 for (i = 0; i < len; i++)
2328 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
2331 /* Don't write out static consts, unless we still need them.
2333 We also keep static consts if not optimizing (for debugging).
2334 ??? They might be better written into the debug information.
2335 This is possible when using DWARF.
2337 A language processor that wants static constants to be always
2338 written out (even if it is not used) is responsible for
2339 calling rest_of_decl_compilation itself. E.g. the C front-end
2340 calls rest_of_decl_compilation from finish_decl.
2341 One motivation for this is that is conventional in some
2342 environments to write things like:
2343 static const char rcsid[] = "... version string ...";
2344 intending to force the string to be in the executable.
2346 A language processor that would prefer to have unneeded
2347 static constants "optimized away" would just defer writing
2348 them out until here. E.g. C++ does this, because static
2349 constants are often defined in header files.
2351 ??? A tempting alternative (for both C and C++) would be
2352 to force a constant to be written if and only if it is
2353 defined in a main file, as opposed to an include file. */
2355 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2356 && (! TREE_READONLY (decl)
2357 || TREE_PUBLIC (decl)
2359 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2362 rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
2365 if (TREE_CODE (decl) == FUNCTION_DECL
2366 && DECL_INITIAL (decl) != 0
2367 && DECL_SAVED_INSNS (decl) != 0
2368 && (flag_keep_inline_functions
2369 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2372 temporary_allocation ();
2373 output_inline_function (decl);
2374 permanent_allocation (1);
2379 for (i = 0; i < len; i++)
2383 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2384 && ! TREE_ASM_WRITTEN (decl))
2385 /* Cancel the RTL for this decl so that, if debugging info
2386 output for global variables is still to come,
2387 this one will be omitted. */
2388 DECL_RTL (decl) = NULL;
2390 /* Warn about any function
2391 declared static but not defined.
2392 We don't warn about variables,
2393 because many programs have static variables
2394 that exist only to get some text into the object file. */
2395 if (TREE_CODE (decl) == FUNCTION_DECL
2397 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
2398 && DECL_INITIAL (decl) == 0
2399 && DECL_EXTERNAL (decl)
2400 && ! TREE_PUBLIC (decl))
2402 pedwarn_with_decl (decl,
2403 "`%s' declared `static' but never defined");
2404 /* This symbol is effectively an "extern" declaration now. */
2405 TREE_PUBLIC (decl) = 1;
2406 assemble_external (decl);
2409 /* Warn about static fns or vars defined but not used,
2410 but not about inline functions or static consts
2411 since defining those in header files is normal practice. */
2413 && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
2414 || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
2415 && ! DECL_IN_SYSTEM_HEADER (decl)
2416 && ! DECL_EXTERNAL (decl)
2417 && ! TREE_PUBLIC (decl)
2418 && ! TREE_USED (decl)
2419 && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
2420 /* The TREE_USED bit for file-scope decls
2421 is kept in the identifier, to handle multiple
2422 external decls in different scopes. */
2423 && ! TREE_USED (DECL_NAME (decl)))
2424 warning_with_decl (decl, "`%s' defined but not used");
2426 #ifdef SDB_DEBUGGING_INFO
2427 /* The COFF linker can move initialized global vars to the end.
2428 And that can screw up the symbol ordering.
2429 By putting the symbols in that order to begin with,
2430 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2431 if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
2432 && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
2433 && ! DECL_EXTERNAL (decl)
2434 && DECL_RTL (decl) != 0)
2435 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2437 /* Output COFF information for non-global
2438 file-scope initialized variables. */
2439 if (write_symbols == SDB_DEBUG
2440 && TREE_CODE (decl) == VAR_DECL
2441 && DECL_INITIAL (decl)
2442 && ! DECL_EXTERNAL (decl)
2443 && DECL_RTL (decl) != 0
2444 && GET_CODE (DECL_RTL (decl)) == MEM)
2445 TIMEVAR (symout_time, sdbout_toplevel_data (decl));
2446 #endif /* SDB_DEBUGGING_INFO */
2447 #ifdef DWARF_DEBUGGING_INFO
2448 /* Output DWARF information for file-scope tentative data object
2449 declarations, file-scope (extern) function declarations (which
2450 had no corresponding body) and file-scope tagged type declarations
2451 and definitions which have not yet been forced out. */
2453 if (write_symbols == DWARF_DEBUG
2454 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
2455 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
2460 /* Write out any pending weak symbol declarations. */
2464 /* Do dbx symbols */
2465 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2466 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2467 TIMEVAR (symout_time,
2469 dbxout_finish (asm_out_file, main_input_filename);
2473 #ifdef DWARF_DEBUGGING_INFO
2474 if (write_symbols == DWARF_DEBUG)
2475 TIMEVAR (symout_time,
2481 /* Output some stuff at end of file if nec. */
2483 if (!output_bytecode)
2485 end_final (main_input_filename);
2488 ASM_FILE_END (asm_out_file);
2492 /* Language-specific end of compilation actions. */
2496 if (output_bytecode)
2497 bc_write_file (asm_out_file);
2499 /* Close the dump files. */
2501 if (flag_gen_aux_info)
2503 fclose (aux_info_file);
2505 unlink (aux_info_file_name);
2509 fclose (rtl_dump_file);
2512 fclose (jump_opt_dump_file);
2515 fclose (cse_dump_file);
2518 fclose (loop_dump_file);
2521 fclose (cse2_dump_file);
2524 fclose (flow_dump_file);
2528 dump_combine_total_stats (combine_dump_file);
2529 fclose (combine_dump_file);
2533 fclose (sched_dump_file);
2536 fclose (local_reg_dump_file);
2538 if (global_reg_dump)
2539 fclose (global_reg_dump_file);
2542 fclose (sched2_dump_file);
2545 fclose (jump2_opt_dump_file);
2548 fclose (dbr_sched_dump_file);
2552 fclose (stack_reg_dump_file);
2555 /* Close non-debugging input and output files. Take special care to note
2556 whether fclose returns an error, since the pages might still be on the
2557 buffer chain while the file is open. */
2560 if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)
2561 fatal_io_error (asm_file_name);
2563 /* Print the times. */
2567 fprintf (stderr,"\n");
2568 print_time ("parse", parse_time);
2570 if (!output_bytecode)
2572 print_time ("integration", integration_time);
2573 print_time ("jump", jump_time);
2574 print_time ("cse", cse_time);
2575 print_time ("loop", loop_time);
2576 print_time ("cse2", cse2_time);
2577 print_time ("flow", flow_time);
2578 print_time ("combine", combine_time);
2579 print_time ("sched", sched_time);
2580 print_time ("local-alloc", local_alloc_time);
2581 print_time ("global-alloc", global_alloc_time);
2582 print_time ("sched2", sched2_time);
2583 print_time ("dbranch", dbr_sched_time);
2584 print_time ("shorten-branch", shorten_branch_time);
2585 print_time ("stack-reg", stack_reg_time);
2586 print_time ("final", final_time);
2587 print_time ("varconst", varconst_time);
2588 print_time ("symout", symout_time);
2589 print_time ("dump", dump_time);
2594 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
2595 and TYPE_DECL nodes.
2597 This does nothing for local (non-static) variables.
2598 Otherwise, it sets up the RTL and outputs any assembler code
2599 (label definition, storage allocation and initialization).
2601 DECL is the declaration. If ASMSPEC is nonzero, it specifies
2602 the assembler symbol name to be used. TOP_LEVEL is nonzero
2603 if this declaration is not within a function. */
2606 rest_of_decl_compilation (decl, asmspec, top_level, at_end)
2612 /* Declarations of variables, and of functions defined elsewhere. */
2614 /* The most obvious approach, to put an #ifndef around where
2615 this macro is used, doesn't work since it's inside a macro call. */
2616 #ifndef ASM_FINISH_DECLARE_OBJECT
2617 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
2620 /* Forward declarations for nested functions are not "external",
2621 but we need to treat them as if they were. */
2622 if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
2623 || TREE_CODE (decl) == FUNCTION_DECL)
2624 TIMEVAR (varconst_time,
2626 make_decl_rtl (decl, asmspec, top_level);
2627 /* Initialized extern variable exists to be replaced
2628 with its value, or represents something that will be
2629 output in another file. */
2630 if (! (TREE_CODE (decl) == VAR_DECL
2631 && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
2632 && DECL_INITIAL (decl) != 0
2633 && DECL_INITIAL (decl) != error_mark_node))
2634 /* Don't output anything
2635 when a tentative file-scope definition is seen.
2636 But at end of compilation, do output code for them. */
2637 if (! (! at_end && top_level
2638 && (DECL_INITIAL (decl) == 0
2639 || DECL_INITIAL (decl) == error_mark_node)))
2640 assemble_variable (decl, top_level, at_end, 0);
2641 if (decl == last_assemble_variable_decl)
2643 ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
2647 else if (DECL_REGISTER (decl) && asmspec != 0)
2649 if (decode_reg_name (asmspec) >= 0)
2651 DECL_RTL (decl) = 0;
2652 make_decl_rtl (decl, asmspec, top_level);
2655 error ("invalid register name `%s' for register variable", asmspec);
2657 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2658 else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2659 && TREE_CODE (decl) == TYPE_DECL)
2660 TIMEVAR (symout_time, dbxout_symbol (decl, 0));
2662 #ifdef SDB_DEBUGGING_INFO
2663 else if (write_symbols == SDB_DEBUG && top_level
2664 && TREE_CODE (decl) == TYPE_DECL)
2665 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2669 /* Called after finishing a record, union or enumeral type. */
2672 rest_of_type_compilation (type, toplev)
2676 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2677 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2678 TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
2680 #ifdef SDB_DEBUGGING_INFO
2681 if (write_symbols == SDB_DEBUG)
2682 TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
2686 /* This is called from finish_function (within yyparse)
2687 after each top-level definition is parsed.
2688 It is supposed to compile that function or variable
2689 and output the assembler code for it.
2690 After we return, the tree storage is freed. */
2693 rest_of_compilation (decl)
2697 int start_time = get_run_time ();
2699 /* Nonzero if we have saved the original DECL_INITIAL of the function,
2700 to be restored after we finish compiling the function
2701 (for use when compiling inline calls to this function). */
2702 tree saved_block_tree = 0;
2703 /* Likewise, for DECL_ARGUMENTS. */
2704 tree saved_arguments = 0;
2707 if (output_bytecode)
2710 /* If we are reconsidering an inline function
2711 at the end of compilation, skip the stuff for making it inline. */
2713 if (DECL_SAVED_INSNS (decl) == 0)
2718 /* If requested, consider whether to make this function inline. */
2719 if (DECL_INLINE (decl) || flag_inline_functions)
2720 TIMEVAR (integration_time,
2722 lose = function_cannot_inline_p (decl);
2723 if (lose || ! optimize)
2725 if (warn_inline && DECL_INLINE (decl))
2726 warning_with_decl (decl, lose);
2727 DECL_ABSTRACT_ORIGIN (decl) = 0;
2728 /* Don't really compile an extern inline function.
2729 If we can't make it inline, pretend
2730 it was only declared. */
2731 if (DECL_EXTERNAL (decl))
2733 DECL_INITIAL (decl) = 0;
2734 goto exit_rest_of_compilation;
2738 /* ??? Note that this has the effect of making it look
2739 like "inline" was specified for a function if we choose
2740 to inline it. This isn't quite right, but it's
2741 probably not worth the trouble to fix. */
2742 inlineable = DECL_INLINE (decl) = 1;
2745 insns = get_insns ();
2747 /* Dump the rtl code if we are dumping rtl. */
2752 fprintf (rtl_dump_file, "\n;; Function %s\n\n",
2753 IDENTIFIER_POINTER (DECL_NAME (decl)));
2754 if (DECL_SAVED_INSNS (decl))
2755 fprintf (rtl_dump_file, ";; (integrable)\n\n");
2756 print_rtl (rtl_dump_file, insns);
2757 fflush (rtl_dump_file);
2760 /* If function is inline, and we don't yet know whether to
2761 compile it by itself, defer decision till end of compilation.
2762 finish_compilation will call rest_of_compilation again
2763 for those functions that need to be output. Also defer those
2764 functions that we are supposed to defer. We cannot defer
2765 functions containing nested functions since the nested function
2766 data is in our non-saved obstack. */
2768 if (! current_function_contains_functions
2769 && (DECL_DEFER_OUTPUT (decl)
2770 || (DECL_INLINE (decl)
2771 && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
2772 && ! flag_keep_inline_functions)
2773 || DECL_EXTERNAL (decl)))))
2775 DECL_DEFER_OUTPUT (decl) = 1;
2777 /* If -Wreturn-type, we have to do a bit of compilation. */
2778 if (! warn_return_type)
2780 #ifdef DWARF_DEBUGGING_INFO
2781 /* Generate the DWARF info for the "abstract" instance
2782 of a function which we may later generate inlined and/or
2783 out-of-line instances of. */
2784 if (write_symbols == DWARF_DEBUG)
2786 set_decl_abstract_flags (decl, 1);
2787 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2788 set_decl_abstract_flags (decl, 0);
2791 TIMEVAR (integration_time, save_for_inline_nocopy (decl));
2792 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
2793 goto exit_rest_of_compilation;
2797 /* If we have to compile the function now, save its rtl and subdecls
2798 so that its compilation will not affect what others get. */
2799 if (inlineable || DECL_DEFER_OUTPUT (decl))
2801 #ifdef DWARF_DEBUGGING_INFO
2802 /* Generate the DWARF info for the "abstract" instance of
2803 a function which we will generate an out-of-line instance
2804 of almost immediately (and which we may also later generate
2805 various inlined instances of). */
2806 if (write_symbols == DWARF_DEBUG)
2808 set_decl_abstract_flags (decl, 1);
2809 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
2810 set_decl_abstract_flags (decl, 0);
2813 saved_block_tree = DECL_INITIAL (decl);
2814 saved_arguments = DECL_ARGUMENTS (decl);
2815 TIMEVAR (integration_time, save_for_inline_copying (decl));
2816 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
2819 /* If specified extern inline but we aren't inlining it, we are
2821 if (DECL_INLINE (decl) && DECL_EXTERNAL (decl))
2822 goto exit_rest_of_compilation;
2825 if (! DECL_DEFER_OUTPUT (decl))
2826 TREE_ASM_WRITTEN (decl) = 1;
2828 /* Now that integrate will no longer see our rtl, we need not distinguish
2829 between the return value of this function and the return value of called
2831 rtx_equal_function_value_matters = 0;
2833 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
2834 if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
2836 goto exit_rest_of_compilation;
2839 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2840 Note that that may have been done above, in save_for_inline_copying.
2841 The call to resume_temporary_allocation near the end of this function
2842 goes back to the usual state of affairs. */
2844 rtl_in_current_obstack ();
2847 /* If we are doing position-independent code generation, now
2848 is the time to output special prologues and epilogues.
2849 We do not want to do this earlier, because it just clutters
2850 up inline functions with meaningless insns. */
2855 insns = get_insns ();
2857 /* Copy any shared structure that should not be shared. */
2859 unshare_all_rtl (insns);
2861 /* Instantiate all virtual registers. */
2863 instantiate_virtual_regs (current_function_decl, get_insns ());
2865 /* See if we have allocated stack slots that are not directly addressable.
2866 If so, scan all the insns and create explicit address computation
2867 for all references to such slots. */
2868 /* fixup_stack_slots (); */
2870 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
2871 are initialized and to compute whether control can drop off the end
2873 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2874 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2876 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
2877 if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
2878 goto exit_rest_of_compilation;
2880 /* Dump rtl code after jump, if we are doing that. */
2885 fprintf (jump_opt_dump_file, "\n;; Function %s\n\n",
2886 IDENTIFIER_POINTER (DECL_NAME (decl)));
2887 print_rtl (jump_opt_dump_file, insns);
2888 fflush (jump_opt_dump_file);
2891 /* Perform common subexpression elimination.
2892 Nonzero value from `cse_main' means that jumps were simplified
2893 and some code may now be unreachable, so do
2894 jump optimization again. */
2899 fprintf (cse_dump_file, "\n;; Function %s\n\n",
2900 IDENTIFIER_POINTER (DECL_NAME (decl)));
2905 TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
2907 if (flag_thread_jumps)
2908 /* Hacks by tiemann & kenner. */
2909 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
2911 TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
2913 TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ()));
2915 if (tem || optimize > 1)
2916 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2919 /* Dump rtl code after cse, if we are doing that. */
2924 print_rtl (cse_dump_file, insns);
2925 fflush (cse_dump_file);
2931 fprintf (loop_dump_file, "\n;; Function %s\n\n",
2932 IDENTIFIER_POINTER (DECL_NAME (decl)));
2935 /* Move constant computations out of loops. */
2941 loop_optimize (insns, loop_dump_file);
2945 /* Dump rtl code after loop opt, if we are doing that. */
2950 print_rtl (loop_dump_file, insns);
2951 fflush (loop_dump_file);
2957 fprintf (cse2_dump_file, "\n;; Function %s\n\n",
2958 IDENTIFIER_POINTER (DECL_NAME (decl)));
2961 if (optimize > 0 && flag_rerun_cse_after_loop)
2963 /* Running another jump optimization pass before the second
2964 cse pass sometimes simplifies the RTL enough to allow
2965 the second CSE pass to do a better job. Jump_optimize can change
2966 max_reg_num so we must rerun reg_scan afterwards.
2967 ??? Rework to not call reg_scan so often. */
2968 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
2969 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
2971 TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
2972 TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
2973 1, cse2_dump_file));
2975 TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
2978 if (optimize > 0 && flag_thread_jumps)
2979 /* This pass of jump threading straightens out code
2980 that was kinked by loop optimization. */
2981 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
2983 /* Dump rtl code after cse, if we are doing that. */
2988 print_rtl (cse2_dump_file, insns);
2989 fflush (cse2_dump_file);
2992 /* We are no longer anticipating cse in this function, at least. */
2994 cse_not_expected = 1;
2996 /* Now we choose between stupid (pcc-like) register allocation
2997 (if we got the -noreg switch and not -opt)
2998 and smart register allocation. */
3000 if (optimize > 0) /* Stupid allocation probably won't work */
3001 obey_regdecls = 0; /* if optimizations being done. */
3005 /* Print function header into flow dump now
3006 because doing the flow analysis makes some of the dump. */
3011 fprintf (flow_dump_file, "\n;; Function %s\n\n",
3012 IDENTIFIER_POINTER (DECL_NAME (decl)));
3019 regclass (insns, max_reg_num ());
3020 stupid_life_analysis (insns, max_reg_num (),
3026 /* Do control and data flow analysis,
3027 and write some of the results to dump file. */
3029 TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (),
3031 if (warn_uninitialized)
3033 uninitialized_vars_warning (DECL_INITIAL (decl));
3034 setjmp_args_warning ();
3038 /* Dump rtl after flow analysis. */
3043 print_rtl (flow_dump_file, insns);
3044 fflush (flow_dump_file);
3047 /* If -opt, try combining insns through substitution. */
3050 TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
3052 /* Dump rtl code after insn combination. */
3057 fprintf (combine_dump_file, "\n;; Function %s\n\n",
3058 IDENTIFIER_POINTER (DECL_NAME (decl)));
3059 dump_combine_stats (combine_dump_file);
3060 print_rtl (combine_dump_file, insns);
3061 fflush (combine_dump_file);
3064 /* Print function header into sched dump now
3065 because doing the sched analysis makes some of the dump. */
3070 fprintf (sched_dump_file, "\n;; Function %s\n\n",
3071 IDENTIFIER_POINTER (DECL_NAME (decl)));
3074 if (optimize > 0 && flag_schedule_insns)
3076 /* Do control and data sched analysis,
3077 and write some of the results to dump file. */
3079 TIMEVAR (sched_time, schedule_insns (sched_dump_file));
3082 /* Dump rtl after instruction scheduling. */
3087 print_rtl (sched_dump_file, insns);
3088 fflush (sched_dump_file);
3091 /* Unless we did stupid register allocation,
3092 allocate pseudo-regs that are used only within 1 basic block. */
3095 TIMEVAR (local_alloc_time,
3097 regclass (insns, max_reg_num ());
3101 /* Dump rtl code after allocating regs within basic blocks. */
3106 fprintf (local_reg_dump_file, "\n;; Function %s\n\n",
3107 IDENTIFIER_POINTER (DECL_NAME (decl)));
3108 dump_flow_info (local_reg_dump_file);
3109 dump_local_alloc (local_reg_dump_file);
3110 print_rtl (local_reg_dump_file, insns);
3111 fflush (local_reg_dump_file);
3114 if (global_reg_dump)
3116 fprintf (global_reg_dump_file, "\n;; Function %s\n\n",
3117 IDENTIFIER_POINTER (DECL_NAME (decl))));
3119 /* Save the last label number used so far, so reorg can tell
3120 when it's safe to kill spill regs. */
3121 max_label_num_after_reload = max_label_num ();
3123 /* Unless we did stupid register allocation,
3124 allocate remaining pseudo-regs, then do the reload pass
3125 fixing up any insns that are invalid. */
3127 TIMEVAR (global_alloc_time,
3130 failure = global_alloc (global_reg_dump_file);
3132 failure = reload (insns, 0, global_reg_dump_file);
3135 if (global_reg_dump)
3138 dump_global_regs (global_reg_dump_file);
3139 print_rtl (global_reg_dump_file, insns);
3140 fflush (global_reg_dump_file);
3144 goto exit_rest_of_compilation;
3146 reload_completed = 1;
3148 /* On some machines, the prologue and epilogue code, or parts thereof,
3149 can be represented as RTL. Doing so lets us schedule insns between
3150 it and the rest of the code and also allows delayed branch
3151 scheduling to operate in the epilogue. */
3153 thread_prologue_and_epilogue_insns (insns);
3155 if (optimize > 0 && flag_schedule_insns_after_reload)
3160 fprintf (sched2_dump_file, "\n;; Function %s\n\n",
3161 IDENTIFIER_POINTER (DECL_NAME (decl)));
3164 /* Do control and data sched analysis again,
3165 and write some more of the results to dump file. */
3167 TIMEVAR (sched2_time, schedule_insns (sched2_dump_file));
3169 /* Dump rtl after post-reorder instruction scheduling. */
3174 print_rtl (sched2_dump_file, insns);
3175 fflush (sched2_dump_file);
3179 #ifdef LEAF_REGISTERS
3181 if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
3185 /* One more attempt to remove jumps to .+1
3186 left by dead-store-elimination.
3187 Also do cross-jumping this time
3188 and delete no-op move insns. */
3192 TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0));
3195 /* Dump rtl code after jump, if we are doing that. */
3200 fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n",
3201 IDENTIFIER_POINTER (DECL_NAME (decl)));
3202 print_rtl (jump2_opt_dump_file, insns);
3203 fflush (jump2_opt_dump_file);
3206 /* If a machine dependent reorganization is needed, call it. */
3207 #ifdef MACHINE_DEPENDENT_REORG
3208 MACHINE_DEPENDENT_REORG (insns);
3211 /* If a scheduling pass for delayed branches is to be done,
3212 call the scheduling code. */
3215 if (optimize > 0 && flag_delayed_branch)
3217 TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file));
3222 fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n",
3223 IDENTIFIER_POINTER (DECL_NAME (decl)));
3224 print_rtl (dbr_sched_dump_file, insns);
3225 fflush (dbr_sched_dump_file);
3231 /* Shorten branches. */
3232 TIMEVAR (shorten_branch_time,
3234 shorten_branches (get_insns ());
3238 TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file));
3243 fprintf (stack_reg_dump_file, "\n;; Function %s\n\n",
3244 IDENTIFIER_POINTER (DECL_NAME (decl)));
3245 print_rtl (stack_reg_dump_file, insns);
3246 fflush (stack_reg_dump_file);
3251 /* Now turn the rtl into assembler code. */
3253 TIMEVAR (final_time,
3258 /* Get the function's name, as described by its RTL.
3259 This may be different from the DECL_NAME name used
3260 in the source file. */
3262 x = DECL_RTL (decl);
3263 if (GET_CODE (x) != MEM)
3266 if (GET_CODE (x) != SYMBOL_REF)
3268 fnname = XSTR (x, 0);
3270 assemble_start_function (decl, fnname);
3271 final_start_function (insns, asm_out_file, optimize);
3272 final (insns, asm_out_file, optimize, 0);
3273 final_end_function (insns, asm_out_file, optimize);
3274 assemble_end_function (decl, fnname);
3275 fflush (asm_out_file);
3278 /* Write DBX symbols if requested */
3280 /* Note that for those inline functions where we don't initially
3281 know for certain that we will be generating an out-of-line copy,
3282 the first invocation of this routine (rest_of_compilation) will
3283 skip over this code by doing a `goto exit_rest_of_compilation;'.
3284 Later on, finish_compilation will call rest_of_compilation again
3285 for those inline functions that need to have out-of-line copies
3286 generated. During that call, we *will* be routed past here. */
3288 #ifdef DBX_DEBUGGING_INFO
3289 if (write_symbols == DBX_DEBUG)
3290 TIMEVAR (symout_time, dbxout_function (decl));
3293 #ifdef DWARF_DEBUGGING_INFO
3294 if (write_symbols == DWARF_DEBUG)
3295 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3298 exit_rest_of_compilation:
3300 /* In case the function was not output,
3301 don't leave any temporary anonymous types
3302 queued up for sdb output. */
3303 #ifdef SDB_DEBUGGING_INFO
3304 if (write_symbols == SDB_DEBUG)
3305 sdbout_types (NULL_TREE);
3308 /* Put back the tree of subblocks and list of arguments
3309 from before we copied them.
3310 Code generation and the output of debugging info may have modified
3311 the copy, but the original is unchanged. */
3313 if (saved_block_tree != 0)
3314 DECL_INITIAL (decl) = saved_block_tree;
3315 if (saved_arguments != 0)
3316 DECL_ARGUMENTS (decl) = saved_arguments;
3318 reload_completed = 0;
3320 /* Clear out the insn_length contents now that they are no longer valid. */
3321 init_insn_lengths ();
3323 /* Clear out the real_constant_chain before some of the rtx's
3324 it runs through become garbage. */
3326 clear_const_double_mem ();
3328 /* Cancel the effect of rtl_in_current_obstack. */
3330 resume_temporary_allocation ();
3332 /* Show no temporary slots allocated. */
3336 /* The parsing time is all the time spent in yyparse
3337 *except* what is spent in this function. */
3339 parse_time -= get_run_time () - start_time;
3342 /* Entry point of cc1/c++. Decode command args, then call compile_file.
3343 Exit code is 35 if can't open files, 34 if fatal error,
3344 33 if had nonfatal errors, else success. */
3347 main (argc, argv, envp)
3354 int flag_print_mem = 0;
3355 int version_flag = 0;
3358 /* save in case md file wants to emit args as a comment. */
3362 p = argv[0] + strlen (argv[0]);
3363 while (p != argv[0] && p[-1] != '/'
3364 #ifdef DIR_SEPARATOR
3365 && p[-1] != DIR_SEPARATOR
3372 /* Get rid of any avoidable limit on stack size. */
3376 /* Set the stack limit huge so that alloca does not fail. */
3377 getrlimit (RLIMIT_STACK, &rlim);
3378 rlim.rlim_cur = rlim.rlim_max;
3379 setrlimit (RLIMIT_STACK, &rlim);
3381 #endif /* RLIMIT_STACK */
3383 signal (SIGFPE, float_signal);
3386 signal (SIGPIPE, pipe_closed);
3389 decl_printable_name = decl_name;
3390 lang_expand_expr = (struct rtx_def *(*)()) do_abort;
3391 interim_eh_hook = interim_eh;
3393 /* Initialize whether `char' is signed. */
3394 flag_signed_char = DEFAULT_SIGNED_CHAR;
3395 #ifdef DEFAULT_SHORT_ENUMS
3396 /* Initialize how much space enums occupy, by default. */
3397 flag_short_enums = DEFAULT_SHORT_ENUMS;
3400 /* Scan to see what optimization level has been specified. That will
3401 determine the default value of many flags. */
3402 for (i = 1; i < argc; i++)
3404 if (!strcmp (argv[i], "-O"))
3408 else if (argv[i][0] == '-' && argv[i][1] == 'O')
3410 /* Handle -O2, -O3, -O69, ... */
3411 char *p = &argv[i][2];
3415 if (! (c >= '0' && c <= '9'))
3418 optimize = atoi (&argv[i][2]);
3422 obey_regdecls = (optimize == 0);
3432 flag_thread_jumps = 1;
3434 flag_delayed_branch = 1;
3436 #ifdef CAN_DEBUG_WITHOUT_FP
3437 flag_omit_frame_pointer = 1;
3443 flag_cse_follow_jumps = 1;
3444 flag_cse_skip_blocks = 1;
3445 flag_expensive_optimizations = 1;
3446 flag_strength_reduce = 1;
3447 flag_rerun_cse_after_loop = 1;
3448 flag_caller_saves = 1;
3450 #ifdef INSN_SCHEDULING
3451 flag_schedule_insns = 1;
3452 flag_schedule_insns_after_reload = 1;
3458 flag_inline_functions = 1;
3461 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
3464 set_target_switch ("");
3466 #ifdef OPTIMIZATION_OPTIONS
3467 /* Allow default optimizations to be specified on a per-machine basis. */
3468 OPTIMIZATION_OPTIONS (optimize);
3471 /* Initialize register usage now so switches may override. */
3474 for (i = 1; i < argc; i++)
3477 /* If this is a language-specific option,
3478 decode it in a language-specific way. */
3479 for (j = 0; lang_options[j] != 0; j++)
3480 if (!strncmp (argv[i], lang_options[j],
3481 strlen (lang_options[j])))
3483 if (lang_options[j] != 0)
3484 /* If the option is valid for *some* language,
3485 treat it as valid even if this language doesn't understand it. */
3486 lang_decode_option (argv[i]);
3487 else if (argv[i][0] == '-' && argv[i][1] != 0)
3489 register char *str = argv[i] + 1;
3494 set_target_switch (&str[1]);
3495 else if (!strcmp (str, "dumpbase"))
3497 dump_base_name = argv[++i];
3499 else if (str[0] == 'd')
3501 register char *p = &str[1];
3509 global_reg_dump = 1;
3515 cse_dump = 1, cse2_dump = 1;
3533 global_reg_dump = 1;
3551 flag_print_asm_name = 1;
3573 rtl_dump_and_exit = 1;
3577 else if (str[0] == 'f')
3579 register char *p = &str[1];
3582 /* Some kind of -f option.
3583 P's value is the option sans `-f'.
3584 Search for it in the table of options. */
3587 !found && j < sizeof (f_options) / sizeof (f_options[0]);
3590 if (!strcmp (p, f_options[j].string))
3592 *f_options[j].variable = f_options[j].on_value;
3593 /* A goto here would be cleaner,
3594 but breaks the vax pcc. */
3597 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3598 && ! strcmp (p+3, f_options[j].string))
3600 *f_options[j].variable = ! f_options[j].on_value;
3607 else if (!strncmp (p, "fixed-", 6))
3608 fix_register (&p[6], 1, 1);
3609 else if (!strncmp (p, "call-used-", 10))
3610 fix_register (&p[10], 0, 1);
3611 else if (!strncmp (p, "call-saved-", 11))
3612 fix_register (&p[11], 0, 0);
3614 error ("Invalid option `%s'", argv[i]);
3616 else if (str[0] == 'O')
3618 register char *p = str+1;
3619 while (*p && *p >= '0' && *p <= '9')
3624 error ("Invalid option `%s'", argv[i]);
3626 else if (!strcmp (str, "pedantic"))
3628 else if (!strcmp (str, "pedantic-errors"))
3629 flag_pedantic_errors = pedantic = 1;
3630 else if (!strcmp (str, "quiet"))
3632 else if (!strcmp (str, "version"))
3634 else if (!strcmp (str, "w"))
3635 inhibit_warnings = 1;
3636 else if (!strcmp (str, "W"))
3639 /* We save the value of warn_uninitialized, since if they put
3640 -Wuninitialized on the command line, we need to generate a
3641 warning about not using it without also specifying -O. */
3642 if (warn_uninitialized != 1)
3643 warn_uninitialized = 2;
3645 else if (str[0] == 'W')
3647 register char *p = &str[1];
3650 /* Some kind of -W option.
3651 P's value is the option sans `-W'.
3652 Search for it in the table of options. */
3655 !found && j < sizeof (W_options) / sizeof (W_options[0]);
3658 if (!strcmp (p, W_options[j].string))
3660 *W_options[j].variable = W_options[j].on_value;
3661 /* A goto here would be cleaner,
3662 but breaks the vax pcc. */
3665 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
3666 && ! strcmp (p+3, W_options[j].string))
3668 *W_options[j].variable = ! W_options[j].on_value;
3675 else if (!strncmp (p, "id-clash-", 9))
3681 if (*endp >= '0' && *endp <= '9')
3685 error ("Invalid option `%s'", argv[i]);
3690 id_clash_len = atoi (str + 10);
3693 else if (!strncmp (p, "larger-than-", 12))
3695 char *endp = p + 12;
3699 if (*endp >= '0' && *endp <= '9')
3703 error ("Invalid option `%s'", argv[i]);
3704 goto larger_than_lose;
3707 warn_larger_than = 1;
3708 larger_than_size = atoi (str + 13);
3712 error ("Invalid option `%s'", argv[i]);
3714 else if (!strcmp (str, "p"))
3718 else if (!strcmp (str, "a"))
3720 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3721 warning ("`-a' option (basic block profile) not supported");
3723 profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
3726 else if (!strcmp (str, "ax"))
3728 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
3729 warning ("`-ax' option (jump profiling) not supported");
3731 profile_block_flag = (!profile_block_flag
3732 || profile_block_flag == 2) ? 2 : 3;
3735 else if (str[0] == 'g')
3742 while (*p && (*p < '0' || *p > '9'))
3746 while (*q && (*q >= '0' && *q <= '9'))
3751 level = 2; /* default debugging info level */
3752 if (*q || level > 3)
3754 warning ("invalid debug level specification in option: `-%s'",
3756 warning ("no debugging information will be generated");
3760 /* If more than one debugging type is supported,
3761 you must define PREFERRED_DEBUGGING_TYPE
3762 to choose a format in a system-dependent way. */
3763 /* This is one long line cause VAXC can't handle a \-newline. */
3764 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
3765 #ifdef PREFERRED_DEBUGGING_TYPE
3766 if (!strncmp (str, "ggdb", len))
3767 write_symbols = PREFERRED_DEBUGGING_TYPE;
3768 #else /* no PREFERRED_DEBUGGING_TYPE */
3769 You Lose! You must define PREFERRED_DEBUGGING_TYPE!
3770 #endif /* no PREFERRED_DEBUGGING_TYPE */
3771 #endif /* More than one debugger format enabled. */
3772 #ifdef DBX_DEBUGGING_INFO
3773 if (write_symbols != NO_DEBUG)
3775 else if (!strncmp (str, "ggdb", len))
3776 write_symbols = DBX_DEBUG;
3777 else if (!strncmp (str, "gstabs", len))
3778 write_symbols = DBX_DEBUG;
3779 else if (!strncmp (str, "gstabs+", len))
3780 write_symbols = DBX_DEBUG;
3782 /* Always enable extensions for -ggdb or -gstabs+,
3783 always disable for -gstabs.
3784 For plain -g, use system-specific default. */
3785 if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len)
3787 use_gnu_debug_info_extensions = 1;
3788 else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len)
3790 use_gnu_debug_info_extensions = 1;
3791 else if (write_symbols == DBX_DEBUG
3792 && !strncmp (str, "gstabs", len) && len >= 2)
3793 use_gnu_debug_info_extensions = 0;
3795 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3796 #endif /* DBX_DEBUGGING_INFO */
3797 #ifdef DWARF_DEBUGGING_INFO
3798 if (write_symbols != NO_DEBUG)
3800 else if (!strncmp (str, "g", len))
3801 write_symbols = DWARF_DEBUG;
3802 else if (!strncmp (str, "ggdb", len))
3803 write_symbols = DWARF_DEBUG;
3804 else if (!strncmp (str, "gdwarf", len))
3805 write_symbols = DWARF_DEBUG;
3807 /* Always enable extensions for -ggdb or -gdwarf+,
3808 always disable for -gdwarf.
3809 For plain -g, use system-specific default. */
3810 if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len)
3812 use_gnu_debug_info_extensions = 1;
3813 else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+"))
3814 use_gnu_debug_info_extensions = 1;
3815 else if (write_symbols == DWARF_DEBUG
3816 && !strncmp (str, "gdwarf", len) && len >= 2)
3817 use_gnu_debug_info_extensions = 0;
3819 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3821 #ifdef SDB_DEBUGGING_INFO
3822 if (write_symbols != NO_DEBUG)
3824 else if (!strncmp (str, "g", len))
3825 write_symbols = SDB_DEBUG;
3826 else if (!strncmp (str, "gdb", len))
3827 write_symbols = SDB_DEBUG;
3828 else if (!strncmp (str, "gcoff", len))
3829 write_symbols = SDB_DEBUG;
3830 #endif /* SDB_DEBUGGING_INFO */
3831 #ifdef XCOFF_DEBUGGING_INFO
3832 if (write_symbols != NO_DEBUG)
3834 else if (!strncmp (str, "g", len))
3835 write_symbols = XCOFF_DEBUG;
3836 else if (!strncmp (str, "ggdb", len))
3837 write_symbols = XCOFF_DEBUG;
3838 else if (!strncmp (str, "gxcoff", len))
3839 write_symbols = XCOFF_DEBUG;
3841 /* Always enable extensions for -ggdb or -gxcoff+,
3842 always disable for -gxcoff.
3843 For plain -g, use system-specific default. */
3844 if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len)
3846 use_gnu_debug_info_extensions = 1;
3847 else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+"))
3848 use_gnu_debug_info_extensions = 1;
3849 else if (write_symbols == XCOFF_DEBUG
3850 && !strncmp (str, "gxcoff", len) && len >= 2)
3851 use_gnu_debug_info_extensions = 0;
3853 use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
3855 if (write_symbols == NO_DEBUG)
3856 warning ("`-%s' not supported by this configuration of GCC",
3858 else if (level == 0)
3859 write_symbols = NO_DEBUG;
3861 debug_info_level = (enum debug_info_level) level;
3863 else if (!strcmp (str, "o"))
3865 asm_file_name = argv[++i];
3867 else if (str[0] == 'G')
3869 g_switch_set = TRUE;
3870 g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]);
3872 else if (!strncmp (str, "aux-info", 8))
3874 flag_gen_aux_info = 1;
3875 aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
3878 error ("Invalid option `%s'", argv[i]);
3880 else if (argv[i][0] == '+')
3881 error ("Invalid option `%s'", argv[i]);
3886 /* Initialize for bytecode output. A good idea to do this as soon as
3887 possible after the "-f" options have been parsed. */
3888 if (output_bytecode)
3890 #ifndef TARGET_SUPPORTS_BYTECODE
3891 /* Just die with a fatal error if not supported */
3892 fatal ("-fbytecode not supporter for this target");
3900 /* Inlining does not work if not optimizing,
3901 so force it not to be done. */
3905 /* The c_decode_option and lang_decode_option functions set
3906 this to `2' if -Wall is used, so we can avoid giving out
3907 lots of errors for people who don't realize what -Wall does. */
3908 if (warn_uninitialized == 1)
3909 warning ("-Wuninitialized is not supported without -O");
3912 #if defined(DWARF_DEBUGGING_INFO)
3913 if (write_symbols == DWARF_DEBUG
3914 && strcmp (language_string, "GNU C++") == 0)
3916 warning ("-g option not supported for C++ on systems using the DWARF debugging format");
3917 write_symbols = NO_DEBUG;
3919 #endif /* defined(DWARF_DEBUGGING_INFO) */
3921 #ifdef OVERRIDE_OPTIONS
3922 /* Some machines may reject certain combinations of options. */
3926 if (profile_block_flag == 3)
3928 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
3929 profile_block_flag = 2;
3932 /* Unrolling all loops implies that standard loop unrolling must also
3934 if (flag_unroll_all_loops)
3935 flag_unroll_loops = 1;
3936 /* Loop unrolling requires that strength_reduction be on also. Silently
3937 turn on strength reduction here if it isn't already on. Also, the loop
3938 unrolling code assumes that cse will be run after loop, so that must
3939 be turned on also. */
3940 if (flag_unroll_loops)
3942 flag_strength_reduce = 1;
3943 flag_rerun_cse_after_loop = 1;
3946 /* Warn about options that are not supported on this machine. */
3947 #ifndef INSN_SCHEDULING
3948 if (flag_schedule_insns || flag_schedule_insns_after_reload)
3949 warning ("instruction scheduling not supported on this target machine");
3952 if (flag_delayed_branch)
3953 warning ("this target machine does not have delayed branches");
3956 /* If we are in verbose mode, write out the version and maybe all the
3957 option flags in use. */
3960 fprintf (stderr, "%s version %s", language_string, version_string);
3961 #ifdef TARGET_VERSION
3966 #define __VERSION__ "[unknown]"
3968 fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__);
3970 fprintf (stderr, " compiled by CC.\n");
3973 print_switch_values ();
3976 compile_file (filename);
3978 #if !defined(OS2) && !defined(VMS) && !defined(_WIN32)
3981 char *lim = (char *) sbrk (0);
3983 fprintf (stderr, "Data size %d.\n",
3984 lim - (char *) &environ);
3988 system ("ps -l 1>&2");
3991 #endif /* not USG */
3993 #endif /* not OS2 and not VMS and not _WIN32 */
3996 exit (FATAL_EXIT_CODE);
3998 exit (FATAL_EXIT_CODE);
3999 exit (SUCCESS_EXIT_CODE);
4003 /* Decode -m switches. */
4005 /* Here is a table, controlled by the tm.h file, listing each -m switch
4006 and which bits in `target_switches' it should set or clear.
4007 If VALUE is positive, it is bits to set.
4008 If VALUE is negative, -VALUE is bits to clear.
4009 (The sign bit is not used so there is no confusion.) */
4011 struct {char *name; int value;} target_switches []
4014 /* This table is similar, but allows the switch to have a value. */
4016 #ifdef TARGET_OPTIONS
4017 struct {char *prefix; char ** variable;} target_options []
4021 /* Decode the switch -mNAME. */
4024 set_target_switch (name)
4030 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
4031 if (!strcmp (target_switches[j].name, name))
4033 if (target_switches[j].value < 0)
4034 target_flags &= ~-target_switches[j].value;
4036 target_flags |= target_switches[j].value;
4040 #ifdef TARGET_OPTIONS
4042 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
4044 int len = strlen (target_options[j].prefix);
4045 if (!strncmp (target_options[j].prefix, name, len))
4047 *target_options[j].variable = name + len;
4054 error ("Invalid option `%s'", name);
4057 /* Variable used for communication between the following two routines. */
4059 static int line_position;
4061 /* Print an option value and adjust the position in the line. */
4064 print_single_switch (type, name)
4067 fprintf (stderr, " %s%s", type, name);
4069 line_position += strlen (type) + strlen (name) + 1;
4071 if (line_position > 65)
4073 fprintf (stderr, "\n\t");
4078 /* Print default target switches for -version. */
4081 print_switch_values ()
4085 fprintf (stderr, "enabled:");
4088 for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
4089 if (*f_options[j].variable == f_options[j].on_value)
4090 print_single_switch ("-f", f_options[j].string);
4092 for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++)
4093 if (*W_options[j].variable == W_options[j].on_value)
4094 print_single_switch ("-W", W_options[j].string);
4096 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
4097 if (target_switches[j].name[0] != '\0'
4098 && target_switches[j].value > 0
4099 && ((target_switches[j].value & target_flags)
4100 == target_switches[j].value))
4101 print_single_switch ("-m", target_switches[j].name);
4103 fprintf (stderr, "\n");