1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 1988, 1989, 1992 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, 675 Mass Ave, Cambridge, MA 02139, 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. */
27 #include <sys/types.h>
36 #include <sys/param.h>
37 /* This is for hpux. It is a real screw. They should change hpux. */
39 #include <sys/times.h>
40 #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
41 #undef FFS /* Some systems define this in param.h. */
45 #include <sys/resource.h>
51 /* #include "c-tree.h" */
54 #include "insn-attr.h"
56 #ifdef XCOFF_DEBUGGING_INFO
61 /* The extra parameters substantially improve the I/O performance. */
63 VMS_fopen (fname
, type
)
67 if (strcmp (type
, "w") == 0)
68 return fopen (fname
, type
, "mbc=16", "deq=64", "fop=tef", "shr=nil");
69 return fopen (fname
, type
, "mbc=16");
71 #define fopen VMS_fopen
74 #ifndef DEFAULT_GDB_EXTENSIONS
75 #define DEFAULT_GDB_EXTENSIONS 1
78 extern int rtx_equal_function_value_matters
;
80 extern char **environ
;
81 extern char *version_string
, *language_string
;
83 extern void init_lex ();
84 extern void init_decl_processing ();
85 extern void init_obstacks ();
86 extern void init_tree_codes ();
87 extern void init_rtl ();
88 extern void init_optabs ();
89 extern void init_stmt ();
90 extern void init_reg_sets ();
91 extern void dump_flow_info ();
92 extern void dump_sched_info ();
93 extern void dump_local_alloc ();
95 void rest_of_decl_compilation ();
97 void error_with_file_and_line ();
102 void set_target_switch ();
103 static void print_switch_values ();
104 static char *decl_name ();
106 /* Name of program invoked, sans directories. */
110 /* Copy of arguments to main. */
114 /* Name of current original source file (what was input to cpp).
115 This comes from each #-command in the actual input. */
117 char *input_filename
;
119 /* Name of top-level original source file (what was input to cpp).
120 This comes from the #-command at the beginning of the actual input.
121 If there isn't any there, then this is the cc1 input file name. */
123 char *main_input_filename
;
125 /* Stream for reading from the input file. */
129 /* Current line number in real source file. */
133 /* Stack of currently pending input files. */
135 struct file_stack
*input_file_stack
;
137 /* Incremented on each change to input_file_stack. */
138 int input_file_stack_tick
;
140 /* FUNCTION_DECL for function now being parsed or compiled. */
142 extern tree current_function_decl
;
144 /* Name to use as base of names for dump output files. */
146 char *dump_base_name
;
148 /* Bit flags that specify the machine subtype we are compiling for.
149 Bits are tested using macros TARGET_... defined in the tm.h file
150 and set by `-m...' switches. Must be defined in rtlanal.c. */
152 extern int target_flags
;
154 /* Flags saying which kinds of debugging dump have been requested. */
157 int rtl_dump_and_exit
= 0;
158 int jump_opt_dump
= 0;
163 int combine_dump
= 0;
165 int local_reg_dump
= 0;
166 int global_reg_dump
= 0;
168 int jump2_opt_dump
= 0;
169 int dbr_sched_dump
= 0;
170 int flag_print_asm_name
= 0;
171 int stack_reg_dump
= 0;
173 /* Name for output file of assembly code, specified with -o. */
177 /* Value of the -G xx switch, and whether it was passed or not. */
181 /* Type(s) of debugging information we are producing (if any).
182 See flags.h for the definitions of the different possible
183 types of debugging information. */
184 enum debug_info_type write_symbols
= NO_DEBUG
;
186 /* Level of debugging information we are producing. See flags.h
187 for the definitions of the different possible levels. */
188 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
190 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
191 /* Nonzero means can use our own extensions to DBX format.
192 Relevant only when write_symbols == DBX_DEBUG or XCOFF_DEBUG. */
193 int use_gdb_dbx_extensions
= 0;
196 /* Nonzero means do optimizations. -O.
197 Particular numeric values stand for particular amounts of optimization;
198 thus, -O2 stores 2 here. However, the optimizations beyond the basic
199 ones are not controlled directly by this variable. Instead, they are
200 controlled by individual `flag_...' variables that are defaulted
201 based on this variable. */
205 /* Number of error messages and warning messages so far. */
208 int warningcount
= 0;
211 /* Pointer to function to compute the name to use to print a declaration. */
213 char *(*decl_printable_name
) ();
215 /* Pointer to function to compute rtl for a language-specific tree code. */
217 struct rtx_def
*(*lang_expand_expr
) ();
219 /* Nonzero if generating code to do profiling. */
221 int profile_flag
= 0;
223 /* Nonzero if generating code to do profiling on a line-by-line basis. */
225 int profile_block_flag
;
227 /* Nonzero for -pedantic switch: warn about anything
228 that standard spec forbids. */
232 /* Temporarily suppress certain warnings.
233 This is set while reading code from a system header file. */
235 int in_system_header
= 0;
237 /* Nonzero means do stupid register allocation.
238 Currently, this is 1 if `optimize' is 0. */
240 int obey_regdecls
= 0;
242 /* Don't print functions as they are compiled and don't print
243 times taken by the various passes. -quiet. */
249 /* Nonzero means `char' should be signed. */
251 int flag_signed_char
;
253 /* Nonzero means give an enum type only as many bytes as it needs. */
255 int flag_short_enums
;
257 /* Nonzero for -fcaller-saves: allocate values in regs that need to
258 be saved across function calls, if that produces overall better code.
259 Optional now, so people can test it. */
261 #ifdef DEFAULT_CALLER_SAVES
262 int flag_caller_saves
= 1;
264 int flag_caller_saves
= 0;
267 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
269 int flag_pcc_struct_return
= 0;
271 /* Nonzero for -fforce-mem: load memory value into a register
272 before arithmetic on it. This makes better cse but slower compilation. */
274 int flag_force_mem
= 0;
276 /* Nonzero for -fforce-addr: load memory address into a register before
277 reference to memory. This makes better cse but slower compilation. */
279 int flag_force_addr
= 0;
281 /* Nonzero for -fdefer-pop: don't pop args after each function call;
282 instead save them up to pop many calls' args with one insns. */
284 int flag_defer_pop
= 1;
286 /* Nonzero for -ffloat-store: don't allocate floats and doubles
287 in extended-precision registers. */
289 int flag_float_store
= 0;
291 /* Nonzero for -fcse-follow-jumps:
292 have cse follow jumps to do a more extensive job. */
294 int flag_cse_follow_jumps
;
296 /* Nonzero for -fcse-skip-blocks:
297 have cse follow a branch around a block. */
298 int flag_cse_skip_blocks
;
300 /* Nonzero for -fexpensive-optimizations:
301 perform miscellaneous relatively-expensive optimizations. */
302 int flag_expensive_optimizations
;
304 /* Nonzero for -fthread-jumps:
305 have jump optimize output of loop. */
307 int flag_thread_jumps
;
309 /* Nonzero enables strength-reduction in loop.c. */
311 int flag_strength_reduce
= 0;
313 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
314 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
315 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
318 int flag_unroll_loops
;
320 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
321 This is generally not a win. */
323 int flag_unroll_all_loops
;
325 /* Nonzero for -fwritable-strings:
326 store string constants in data segment and don't uniquize them. */
328 int flag_writable_strings
= 0;
330 /* Nonzero means don't put addresses of constant functions in registers.
331 Used for compiling the Unix kernel, where strange substitutions are
332 done on the assembly output. */
334 int flag_no_function_cse
= 0;
336 /* Nonzero for -fomit-frame-pointer:
337 don't make a frame pointer in simple functions that don't require one. */
339 int flag_omit_frame_pointer
= 0;
341 /* Nonzero to inhibit use of define_optimization peephole opts. */
343 int flag_no_peephole
= 0;
345 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
346 operations in the interest of optimization. For example it allows
347 GCC to assume arguments to sqrt are nonnegative numbers, allowing
348 faster code for sqrt to be generated. */
350 int flag_fast_math
= 0;
352 /* Nonzero means all references through pointers are volatile. */
356 /* Nonzero means just do syntax checking; don't output anything. */
358 int flag_syntax_only
= 0;
360 /* Nonzero means to rerun cse after loop optimization. This increases
361 compilation time about 20% and picks up a few more common expressions. */
363 static int flag_rerun_cse_after_loop
;
365 /* Nonzero for -finline-functions: ok to inline functions that look like
366 good inline candidates. */
368 int flag_inline_functions
;
370 /* Nonzero for -fkeep-inline-functions: even if we make a function
371 go inline everywhere, keep its defintion around for debugging
374 int flag_keep_inline_functions
;
376 /* Nonzero means that functions declared `inline' will be treated
377 as `static'. Prevents generation of zillions of copies of unused
378 static inline functions; instead, `inlines' are written out
379 only when actually used. Used in conjunction with -g. Also
380 does the right thing with #pragma interface. */
384 /* Nonzero means we should be saving declaration info into a .X file. */
386 int flag_gen_aux_info
= 0;
388 /* Specified name of aux-info file. */
390 static char *aux_info_file_name
;
392 /* Nonzero means make the text shared if supported. */
394 int flag_shared_data
;
396 /* Nonzero means schedule into delayed branch slots if supported. */
398 int flag_delayed_branch
;
400 /* Nonzero if we are compiling pure (sharable) code.
401 Value is 1 if we are doing reasonable (i.e. simple
402 offset into offset table) pic. Value is 2 if we can
403 only perform register offsets. */
407 /* Nonzero means place uninitialized global data in the bss section. */
411 /* Nonzero means pretend it is OK to examine bits of target floats,
412 even if that isn't true. The resulting code will have incorrect constants,
413 but the same series of instructions that the native compiler would make. */
415 int flag_pretend_float
;
417 /* Nonzero means change certain warnings into errors.
418 Usually these are warnings about failure to conform to some standard. */
420 int flag_pedantic_errors
= 0;
422 /* flag_schedule_insns means schedule insns within basic blocks (before
424 flag_schedule_insns_after_reload means schedule insns after
427 int flag_schedule_insns
= 0;
428 int flag_schedule_insns_after_reload
= 0;
430 /* -finhibit-size-directive inhibits output of .size for ELF.
431 This is used only for compiling crtstuff.c,
432 and it may be extended to other effects
433 needed for crtstuff.c on other systems. */
434 int flag_inhibit_size_directive
= 0;
436 /* -fgnu-linker specifies use of the GNU linker for initializations.
437 (Or, more generally, a linker that handles initializations.)
438 -fno-gnu-linker says that collect2 will be used. */
440 int flag_gnu_linker
= 0;
442 int flag_gnu_linker
= 1;
445 /* Table of language-independent -f options.
446 STRING is the option name. VARIABLE is the address of the variable.
447 ON_VALUE is the value to store in VARIABLE
448 if `-fSTRING' is seen as an option.
449 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
451 struct { char *string
; int *variable
; int on_value
;} f_options
[] =
453 {"float-store", &flag_float_store
, 1},
454 {"volatile", &flag_volatile
, 1},
455 {"defer-pop", &flag_defer_pop
, 1},
456 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1},
457 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1},
458 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1},
459 {"expensive-optimizations", &flag_expensive_optimizations
, 1},
460 {"thread-jumps", &flag_thread_jumps
, 1},
461 {"strength-reduce", &flag_strength_reduce
, 1},
462 {"unroll-loops", &flag_unroll_loops
, 1},
463 {"unroll-all-loops", &flag_unroll_all_loops
, 1},
464 {"writable-strings", &flag_writable_strings
, 1},
465 {"peephole", &flag_no_peephole
, 0},
466 {"force-mem", &flag_force_mem
, 1},
467 {"force-addr", &flag_force_addr
, 1},
468 {"function-cse", &flag_no_function_cse
, 0},
469 {"inline-functions", &flag_inline_functions
, 1},
470 {"keep-inline-functions", &flag_keep_inline_functions
, 1},
471 {"inline", &flag_no_inline
, 0},
472 {"syntax-only", &flag_syntax_only
, 1},
473 {"shared-data", &flag_shared_data
, 1},
474 {"caller-saves", &flag_caller_saves
, 1},
475 {"pcc-struct-return", &flag_pcc_struct_return
, 1},
476 {"delayed-branch", &flag_delayed_branch
, 1},
477 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1},
478 {"pretend-float", &flag_pretend_float
, 1},
479 {"schedule-insns", &flag_schedule_insns
, 1},
480 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1},
481 {"pic", &flag_pic
, 1},
482 {"PIC", &flag_pic
, 2},
483 {"fast-math", &flag_fast_math
, 1},
484 {"common", &flag_no_common
, 0},
485 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1},
486 {"gnu-linker", &flag_gnu_linker
, 1}
489 /* Options controlling warnings */
491 /* Don't print warning messages. -w. */
493 int inhibit_warnings
= 0;
495 /* Print various extra warnings. -W. */
497 int extra_warnings
= 0;
499 /* Treat warnings as errors. -Werror. */
501 int warnings_are_errors
= 0;
503 /* Nonzero to warn about unused local variables. */
507 /* Nonzero to warn about variables used before they are initialized. */
509 int warn_uninitialized
;
511 /* Nonzero means warn about all declarations which shadow others. */
515 /* Warn if a switch on an enum fails to have a case for every enum value. */
519 /* Nonzero means warn about function definitions that default the return type
520 or that use a null return and have a return-type other than void. */
522 int warn_return_type
;
524 /* Nonzero means warn about pointer casts that increase the required
525 alignment of the target type (and might therefore lead to a crash
526 due to a misaligned access). */
530 /* Nonzero means warn about any identifiers that match in the first N
531 characters. The value N is in `id_clash_len'. */
536 /* Nonzero means warn if inline function is too large. */
540 /* Warn if a function returns an aggregate,
541 since there are often incompatible calling conventions for doing this. */
543 int warn_aggregate_return
;
545 /* Likewise for -W. */
547 struct { char *string
; int *variable
; int on_value
;} W_options
[] =
549 {"unused", &warn_unused
, 1},
550 {"error", &warnings_are_errors
, 1},
551 {"shadow", &warn_shadow
, 1},
552 {"switch", &warn_switch
, 1},
553 {"return-type", &warn_return_type
, 1},
554 {"aggregate-return", &warn_aggregate_return
, 1},
555 {"cast-align", &warn_cast_align
, 1},
556 {"uninitialized", &warn_uninitialized
, 1},
557 {"inline", &warn_inline
, 1}
560 /* Output files for assembler code (real compiler output)
561 and debugging dumps. */
566 FILE *jump_opt_dump_file
;
568 FILE *loop_dump_file
;
569 FILE *cse2_dump_file
;
570 FILE *flow_dump_file
;
571 FILE *combine_dump_file
;
572 FILE *sched_dump_file
;
573 FILE *local_reg_dump_file
;
574 FILE *global_reg_dump_file
;
575 FILE *sched2_dump_file
;
576 FILE *jump2_opt_dump_file
;
577 FILE *dbr_sched_dump_file
;
578 FILE *stack_reg_dump_file
;
580 /* Time accumulators, to count the total time spent in various passes. */
584 int integration_time
;
592 int local_alloc_time
;
593 int global_alloc_time
;
596 int shorten_branch_time
;
602 /* Return time used so far, in microseconds. */
611 struct rusage rusage
;
616 int proc_system_time
;
618 int child_system_time
;
628 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / HZ
);
631 getrusage (0, &rusage
);
632 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
633 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
636 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
641 #define TIMEVAR(VAR, BODY) \
642 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
645 print_time (str
, total
)
650 "time in %s: %d.%06d\n",
651 str
, total
/ 1000000, total
% 1000000);
654 /* Count an error or warning. Return 1 if the message should be printed. */
657 count_error (warningp
)
660 if (warningp
&& inhibit_warnings
)
663 if (warningp
&& !warnings_are_errors
)
667 static int warning_message
= 0;
669 if (warningp
&& !warning_message
)
671 fprintf (stderr
, "%s: warnings being treated as errors\n", progname
);
680 /* Print a fatal error message. NAME is the text.
681 Also include a system error message based on `errno'. */
684 pfatal_with_name (name
)
687 fprintf (stderr
, "%s: ", progname
);
693 fatal_io_error (name
)
696 fprintf (stderr
, "%s: %s: I/O error\n", progname
, name
);
709 /* Called to give a better error message when we don't have an insn to match
710 what we are looking for or if the insn's constraints aren't satisfied,
711 rather than just calling abort(). */
714 fatal_insn_not_found (insn
)
717 if (INSN_CODE (insn
) < 0)
718 error ("internal error--unrecognizable insn:", 0);
720 error ("internal error--insn does not satisfy its constraints:", 0);
723 fflush (asm_out_file
);
725 fflush (aux_info_file
);
727 fflush (rtl_dump_file
);
728 if (jump_opt_dump_file
)
729 fflush (jump_opt_dump_file
);
731 fflush (cse_dump_file
);
733 fflush (loop_dump_file
);
735 fflush (cse2_dump_file
);
737 fflush (flow_dump_file
);
738 if (combine_dump_file
)
739 fflush (combine_dump_file
);
741 fflush (sched_dump_file
);
742 if (local_reg_dump_file
)
743 fflush (local_reg_dump_file
);
744 if (global_reg_dump_file
)
745 fflush (global_reg_dump_file
);
746 if (sched2_dump_file
)
747 fflush (sched2_dump_file
);
748 if (jump2_opt_dump_file
)
749 fflush (jump2_opt_dump_file
);
750 if (dbr_sched_dump_file
)
751 fflush (dbr_sched_dump_file
);
752 if (stack_reg_dump_file
)
753 fflush (stack_reg_dump_file
);
757 /* This is the default decl_printable_name function. */
760 decl_name (decl
, kind
)
764 return IDENTIFIER_POINTER (DECL_NAME (decl
));
767 static int need_error_newline
;
769 /* Function of last error message;
770 more generally, function such that if next error message is in it
771 then we don't have to mention the function name. */
772 static tree last_error_function
= NULL
;
774 /* Used to detect when input_file_stack has changed since last described. */
775 static int last_error_tick
;
777 /* Called when the start of a function definition is parsed,
778 this function prints on stderr the name of the function. */
781 announce_function (decl
)
787 if (rtl_dump_and_exit
)
788 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
790 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, &junk
));
792 need_error_newline
= 1;
793 last_error_function
= current_function_decl
;
797 /* Prints out, if necessary, the name of the current function
798 which caused an error. Called from all error and warning functions. */
801 report_error_function (file
)
804 struct file_stack
*p
;
806 if (need_error_newline
)
808 fprintf (stderr
, "\n");
809 need_error_newline
= 0;
812 if (last_error_function
!= current_function_decl
)
814 char *kind
= "function";
815 if (current_function_decl
!= 0
816 && TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
)
820 fprintf (stderr
, "%s: ", file
);
822 if (current_function_decl
== NULL
)
823 fprintf (stderr
, "At top level:\n");
826 char *name
= (*decl_printable_name
) (current_function_decl
, &kind
);
827 fprintf (stderr
, "In %s `%s':\n", kind
, name
);
830 last_error_function
= current_function_decl
;
832 if (input_file_stack
&& input_file_stack
->next
!= 0
833 && input_file_stack_tick
!= last_error_tick
)
835 fprintf (stderr
, "In file included");
836 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
838 fprintf (stderr
, " from %s:%d", p
->name
, p
->line
);
840 fprintf (stderr
, ",");
842 fprintf (stderr
, ":\n");
843 last_error_tick
= input_file_stack_tick
;
847 /* Report an error at the current line number.
848 S and V are a string and an arg for `printf'. */
853 int v
; /* @@also used as pointer */
854 int v2
; /* @@also used as pointer */
856 error_with_file_and_line (input_filename
, lineno
, s
, v
, v2
);
859 /* Report an error at line LINE of file FILE.
860 S and V are a string and an arg for `printf'. */
863 error_with_file_and_line (file
, line
, s
, v
, v2
)
872 report_error_function (file
);
875 fprintf (stderr
, "%s:%d: ", file
, line
);
877 fprintf (stderr
, "%s: ", progname
);
878 fprintf (stderr
, s
, v
, v2
);
879 fprintf (stderr
, "\n");
882 /* Report an error at the declaration DECL.
883 S and V are a string and an arg which uses %s to substitute the declaration name. */
886 error_with_decl (decl
, s
, v
)
894 report_error_function (DECL_SOURCE_FILE (decl
));
896 fprintf (stderr
, "%s:%d: ",
897 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
899 if (DECL_NAME (decl
))
900 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
902 fprintf (stderr
, s
, "((anonymous))", v
);
903 fprintf (stderr
, "\n");
906 /* Report an error at the line number of the insn INSN.
907 S and V are a string and an arg for `printf'.
908 This is used only when INSN is an `asm' with operands,
909 and each ASM_OPERANDS records its own source file and line. */
912 error_for_asm (insn
, s
, v
, v2
)
915 int v
; /* @@also used as pointer */
916 int v2
; /* @@also used as pointer */
920 rtx body
= PATTERN (insn
);
923 /* Find the (or one of the) ASM_OPERANDS in the insn. */
924 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
925 asmop
= SET_SRC (body
);
926 else if (GET_CODE (body
) == ASM_OPERANDS
)
928 else if (GET_CODE (body
) == PARALLEL
929 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
930 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
931 else if (GET_CODE (body
) == PARALLEL
932 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
933 asmop
= XVECEXP (body
, 0, 0);
935 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
936 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
938 error_with_file_and_line (filename
, line
, s
, v
, v2
);
941 /* Report a warning at line LINE.
942 S and V are a string and an arg for `printf'. */
945 warning_with_file_and_line (file
, line
, s
, v
, v2
, v3
)
953 if (count_error (1) == 0)
956 report_error_function (file
);
959 fprintf (stderr
, "%s:%d: ", file
, line
);
961 fprintf (stderr
, "%s: ", progname
);
963 fprintf (stderr
, "warning: ");
964 fprintf (stderr
, s
, v
, v2
, v3
);
965 fprintf (stderr
, "\n");
968 /* Report a warning at the current line number.
969 S and V are a string and an arg for `printf'. */
972 warning (s
, v
, v2
, v3
)
974 int v
; /* @@also used as pointer */
978 warning_with_file_and_line (input_filename
, lineno
, s
, v
, v2
, v3
);
981 /* Report a warning at the declaration DECL.
982 S is string which uses %s to substitute the declaration name.
983 V is a second parameter that S can refer to. */
986 warning_with_decl (decl
, s
, v
)
993 if (count_error (1) == 0)
996 report_error_function (DECL_SOURCE_FILE (decl
));
998 fprintf (stderr
, "%s:%d: ",
999 DECL_SOURCE_FILE (decl
), DECL_SOURCE_LINE (decl
));
1001 fprintf (stderr
, "warning: ");
1002 if (DECL_NAME (decl
))
1003 fprintf (stderr
, s
, (*decl_printable_name
) (decl
, &junk
), v
);
1005 fprintf (stderr
, s
, "((anonymous))", v
);
1006 fprintf (stderr
, "\n");
1009 /* Report a warning at the line number of the insn INSN.
1010 S and V are a string and an arg for `printf'.
1011 This is used only when INSN is an `asm' with operands,
1012 and each ASM_OPERANDS records its own source file and line. */
1015 warning_for_asm (insn
, s
, v
, v2
)
1018 int v
; /* @@also used as pointer */
1019 int v2
; /* @@also used as pointer */
1023 rtx body
= PATTERN (insn
);
1026 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1027 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1028 asmop
= SET_SRC (body
);
1029 else if (GET_CODE (body
) == ASM_OPERANDS
)
1031 else if (GET_CODE (body
) == PARALLEL
1032 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1033 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1034 else if (GET_CODE (body
) == PARALLEL
1035 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1036 asmop
= XVECEXP (body
, 0, 0);
1038 filename
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1039 line
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1041 warning_with_file_and_line (filename
, line
, s
, v
, v2
);
1044 /* These functions issue either warnings or errors depending on
1045 -pedantic-errors. */
1050 int v
; /* @@also used as pointer */
1053 if (flag_pedantic_errors
)
1060 pedwarn_with_decl (decl
, s
, v
)
1065 if (flag_pedantic_errors
)
1066 error_with_decl (decl
, s
, v
);
1068 warning_with_decl (decl
, s
, v
);
1072 pedwarn_with_file_and_line (file
, line
, s
, v
, v2
)
1079 if (flag_pedantic_errors
)
1080 error_with_file_and_line (file
, line
, s
, v
, v2
);
1082 warning_with_file_and_line (file
, line
, s
, v
, v2
);
1085 /* Apologize for not implementing some feature.
1086 S, V, and V2 are a string and args for `printf'. */
1095 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1097 fprintf (stderr
, "%s: ", progname
);
1099 fprintf (stderr
, "sorry, not implemented: ");
1100 fprintf (stderr
, s
, v
, v2
);
1101 fprintf (stderr
, "\n");
1104 /* Apologize for not implementing some feature, then quit.
1105 S, V, and V2 are a string and args for `printf'. */
1108 really_sorry (s
, v
, v2
)
1113 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
1115 fprintf (stderr
, "c++: ");
1117 fprintf (stderr
, "sorry, not implemented: ");
1118 fprintf (stderr
, s
, v
, v2
);
1119 fatal (" (fatal)\n");
1122 /* More 'friendly' abort that prints the line and file.
1123 config.h can #define abort fancy_abort if you like that sort of thing.
1125 I don't think this is actually a good idea.
1126 Other sorts of crashes will look a certain way.
1127 It is a good thing if crashes from calling abort look the same way.
1133 fatal ("internal gcc abort");
1136 /* This calls abort and is used to avoid problems when abort if a macro.
1137 It is used when we need to pass the address of abort. */
1145 /* When `malloc.c' is compiled with `rcheck' defined,
1146 it calls this function to report clobberage. */
1154 /* Same as `malloc' but report error if no memory available. */
1160 register int value
= (int) malloc (size
);
1162 fatal ("virtual memory exhausted");
1166 /* Same as `realloc' but report error if no memory available. */
1169 xrealloc (ptr
, size
)
1173 int result
= realloc (ptr
, size
);
1175 fatal ("virtual memory exhausted");
1179 /* Return the logarithm of X, base 2, considering X unsigned,
1180 if X is a power of 2. Otherwise, returns -1. */
1184 register unsigned int x
;
1186 register int log
= 0;
1187 /* Test for 0 or a power of 2. */
1188 if (x
== 0 || x
!= (x
& -x
))
1190 while ((x
>>= 1) != 0)
1195 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
1196 If X is 0, return -1. */
1200 register unsigned int x
;
1202 register int log
= -1;
1210 jmp_buf float_handler
;
1212 /* Specify where to longjmp to when a floating arithmetic error happens.
1213 If HANDLER is 0, it means don't handle the errors any more. */
1216 set_float_handler (handler
)
1219 float_handled
= (handler
!= 0);
1221 bcopy (handler
, float_handler
, sizeof (float_handler
));
1224 /* Signals actually come here. */
1227 float_signal (signo
)
1228 /* If this is missing, some compilers complain. */
1231 if (float_handled
== 0)
1233 #if defined (USG) || defined (hpux)
1234 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
1237 signal (SIGFPE
, float_signal
);
1238 longjmp (float_handler
, 1);
1241 /* Handler for SIGPIPE. */
1245 /* If this is missing, some compilers complain. */
1248 fatal ("output pipe has been closed");
1251 /* Strip off a legitimate source ending from the input string NAME of
1255 strip_off_ending (name
, len
)
1259 if (len
> 2 && ! strcmp (".c", name
+ len
- 2))
1261 else if (len
> 2 && ! strcmp (".m", name
+ len
- 2))
1263 else if (len
> 2 && ! strcmp (".i", name
+ len
- 2))
1265 else if (len
> 3 && ! strcmp (".ii", name
+ len
- 3))
1267 else if (len
> 3 && ! strcmp (".co", name
+ len
- 3))
1269 else if (len
> 3 && ! strcmp (".cc", name
+ len
- 3))
1271 else if (len
> 2 && ! strcmp (".f", name
+ len
- 2))
1273 else if (len
> 4 && ! strcmp (".ada", name
+ len
- 4))
1277 /* Output a file name in the form wanted by System V. */
1280 output_file_directive (asm_file
, input_name
)
1284 int len
= strlen (input_name
);
1285 char *na
= input_name
+ len
;
1287 /* NA gets INPUT_NAME sans directory names. */
1288 while (na
> input_name
)
1295 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
1296 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
1298 #ifdef ASM_OUTPUT_SOURCE_FILENAME
1299 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
1301 fprintf (asm_file
, "\t.file\t\"%s\"\n", na
);
1306 /* Compile an entire file of output from cpp, named NAME.
1307 Write a file of assembly output and various debugging dumps. */
1315 int dump_base_name_length
;
1317 int name_specified
= name
!= 0;
1319 if (dump_base_name
== 0)
1320 dump_base_name
= name
? name
: "gccdump";
1321 dump_base_name_length
= strlen (dump_base_name
);
1325 integration_time
= 0;
1333 local_alloc_time
= 0;
1334 global_alloc_time
= 0;
1337 shorten_branch_time
= 0;
1343 /* Open input file. */
1345 if (name
== 0 || !strcmp (name
, "-"))
1351 finput
= fopen (name
, "r");
1353 pfatal_with_name (name
);
1355 /* Initialize data in various passes. */
1361 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
1362 || debug_info_level
== DINFO_LEVEL_VERBOSE
);
1363 init_decl_processing ();
1370 if (flag_caller_saves
)
1371 init_caller_save ();
1373 /* If auxiliary info generation is desired, open the output file.
1374 This goes in the same directory as the source file--unlike
1375 all the other output files. */
1376 if (flag_gen_aux_info
)
1378 aux_info_file
= fopen (aux_info_file_name
, "w");
1379 if (aux_info_file
== 0)
1380 pfatal_with_name (aux_info_file_name
);
1383 /* If rtl dump desired, open the output file. */
1386 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1387 strcpy (dumpname
, dump_base_name
);
1388 strcat (dumpname
, ".rtl");
1389 rtl_dump_file
= fopen (dumpname
, "w");
1390 if (rtl_dump_file
== 0)
1391 pfatal_with_name (dumpname
);
1394 /* If jump_opt dump desired, open the output file. */
1397 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1398 strcpy (dumpname
, dump_base_name
);
1399 strcat (dumpname
, ".jump");
1400 jump_opt_dump_file
= fopen (dumpname
, "w");
1401 if (jump_opt_dump_file
== 0)
1402 pfatal_with_name (dumpname
);
1405 /* If cse dump desired, open the output file. */
1408 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1409 strcpy (dumpname
, dump_base_name
);
1410 strcat (dumpname
, ".cse");
1411 cse_dump_file
= fopen (dumpname
, "w");
1412 if (cse_dump_file
== 0)
1413 pfatal_with_name (dumpname
);
1416 /* If loop dump desired, open the output file. */
1419 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1420 strcpy (dumpname
, dump_base_name
);
1421 strcat (dumpname
, ".loop");
1422 loop_dump_file
= fopen (dumpname
, "w");
1423 if (loop_dump_file
== 0)
1424 pfatal_with_name (dumpname
);
1427 /* If cse2 dump desired, open the output file. */
1430 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1431 strcpy (dumpname
, dump_base_name
);
1432 strcat (dumpname
, ".cse2");
1433 cse2_dump_file
= fopen (dumpname
, "w");
1434 if (cse2_dump_file
== 0)
1435 pfatal_with_name (dumpname
);
1438 /* If flow dump desired, open the output file. */
1441 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1442 strcpy (dumpname
, dump_base_name
);
1443 strcat (dumpname
, ".flow");
1444 flow_dump_file
= fopen (dumpname
, "w");
1445 if (flow_dump_file
== 0)
1446 pfatal_with_name (dumpname
);
1449 /* If combine dump desired, open the output file. */
1452 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1453 strcpy (dumpname
, dump_base_name
);
1454 strcat (dumpname
, ".combine");
1455 combine_dump_file
= fopen (dumpname
, "w");
1456 if (combine_dump_file
== 0)
1457 pfatal_with_name (dumpname
);
1460 /* If scheduling dump desired, open the output file. */
1463 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1464 strcpy (dumpname
, dump_base_name
);
1465 strcat (dumpname
, ".sched");
1466 sched_dump_file
= fopen (dumpname
, "w");
1467 if (sched_dump_file
== 0)
1468 pfatal_with_name (dumpname
);
1471 /* If local_reg dump desired, open the output file. */
1474 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1475 strcpy (dumpname
, dump_base_name
);
1476 strcat (dumpname
, ".lreg");
1477 local_reg_dump_file
= fopen (dumpname
, "w");
1478 if (local_reg_dump_file
== 0)
1479 pfatal_with_name (dumpname
);
1482 /* If global_reg dump desired, open the output file. */
1483 if (global_reg_dump
)
1485 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1486 strcpy (dumpname
, dump_base_name
);
1487 strcat (dumpname
, ".greg");
1488 global_reg_dump_file
= fopen (dumpname
, "w");
1489 if (global_reg_dump_file
== 0)
1490 pfatal_with_name (dumpname
);
1493 /* If 2nd scheduling dump desired, open the output file. */
1496 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 8);
1497 strcpy (dumpname
, dump_base_name
);
1498 strcat (dumpname
, ".sched2");
1499 sched2_dump_file
= fopen (dumpname
, "w");
1500 if (sched2_dump_file
== 0)
1501 pfatal_with_name (dumpname
);
1504 /* If jump2_opt dump desired, open the output file. */
1507 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1508 strcpy (dumpname
, dump_base_name
);
1509 strcat (dumpname
, ".jump2");
1510 jump2_opt_dump_file
= fopen (dumpname
, "w");
1511 if (jump2_opt_dump_file
== 0)
1512 pfatal_with_name (dumpname
);
1515 /* If dbr_sched dump desired, open the output file. */
1518 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 7);
1519 strcpy (dumpname
, dump_base_name
);
1520 strcat (dumpname
, ".dbr");
1521 dbr_sched_dump_file
= fopen (dumpname
, "w");
1522 if (dbr_sched_dump_file
== 0)
1523 pfatal_with_name (dumpname
);
1528 /* If stack_reg dump desired, open the output file. */
1531 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 10);
1532 strcpy (dumpname
, dump_base_name
);
1533 strcat (dumpname
, ".stack");
1534 stack_reg_dump_file
= fopen (dumpname
, "w");
1535 if (stack_reg_dump_file
== 0)
1536 pfatal_with_name (dumpname
);
1541 /* Open assembler code output file. */
1543 if (! name_specified
&& asm_file_name
== 0)
1544 asm_out_file
= stdout
;
1547 register char *dumpname
= (char *) xmalloc (dump_base_name_length
+ 6);
1548 int len
= strlen (dump_base_name
);
1549 strcpy (dumpname
, dump_base_name
);
1550 strip_off_ending (dumpname
, len
);
1551 strcat (dumpname
, ".s");
1552 if (asm_file_name
== 0)
1554 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
1555 strcpy (asm_file_name
, dumpname
);
1557 if (!strcmp (asm_file_name
, "-"))
1558 asm_out_file
= stdout
;
1560 asm_out_file
= fopen (asm_file_name
, "w");
1561 if (asm_out_file
== 0)
1562 pfatal_with_name (asm_file_name
);
1565 #ifdef IO_BUFFER_SIZE
1566 setvbuf (asm_out_file
, xmalloc (IO_BUFFER_SIZE
), _IOFBF
, IO_BUFFER_SIZE
);
1569 input_filename
= name
;
1571 /* Perform language-specific initialization.
1572 This may set main_input_filename. */
1575 /* If the input doesn't start with a #line, use the input name
1576 as the official input file name. */
1577 if (main_input_filename
== 0)
1578 main_input_filename
= name
;
1580 /* Put an entry on the input file stack for the main input file. */
1582 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
1583 input_file_stack
->next
= 0;
1584 input_file_stack
->name
= input_filename
;
1586 ASM_FILE_START (asm_out_file
);
1588 /* Output something to inform GDB that this compilation was by GCC. */
1589 #ifndef ASM_IDENTIFY_GCC
1590 fprintf (asm_out_file
, "gcc2_compiled.:\n");
1592 ASM_IDENTIFY_GCC (asm_out_file
);
1594 /* Don't let the first function fall at the same address
1595 as gcc_compiled., if profiling. */
1596 if (profile_flag
|| profile_block_flag
)
1597 assemble_zeros (UNITS_PER_WORD
);
1599 /* If dbx symbol table desired, initialize writing it
1600 and output the predefined types. */
1601 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1602 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1603 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
1606 #ifdef SDB_DEBUGGING_INFO
1607 if (write_symbols
== SDB_DEBUG
)
1608 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
1611 #ifdef DWARF_DEBUGGING_INFO
1612 if (write_symbols
== DWARF_DEBUG
)
1613 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
1616 /* Initialize yet another pass. */
1618 init_final (main_input_filename
);
1620 start_time
= get_run_time ();
1622 /* Call the parser, which parses the entire file
1623 (calling rest_of_compilation for each function). */
1625 if (yyparse () != 0)
1626 if (errorcount
== 0)
1627 fprintf (stderr
, "Errors detected in input file (your bison.simple is out of date)");
1629 /* Compilation is now finished except for writing
1630 what's left of the symbol table output. */
1632 parse_time
+= get_run_time () - start_time
;
1634 parse_time
-= integration_time
;
1635 parse_time
-= varconst_time
;
1637 globals
= getdecls ();
1639 /* Really define vars that have had only a tentative definition.
1640 Really output inline functions that must actually be callable
1641 and have not been output so far. */
1644 int len
= list_length (globals
);
1645 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
1649 /* Process the decls in reverse order--earliest first.
1650 Put them into VEC from back to front, then take out from front. */
1652 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
1653 vec
[len
- i
- 1] = decl
;
1655 for (i
= 0; i
< len
; i
++)
1658 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
1659 && ! TREE_ASM_WRITTEN (decl
))
1661 /* Don't write out static consts, unless we used them.
1662 (This used to write them out only if the address was
1663 taken, but that was wrong; if the variable was simply
1664 referred to, it still needs to exist or else it will
1665 be undefined in the linker.) */
1666 if (! TREE_READONLY (decl
)
1667 || TREE_PUBLIC (decl
)
1669 || TREE_ADDRESSABLE (decl
)
1670 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1671 rest_of_decl_compilation (decl
, 0, 1, 1);
1673 /* Cancel the RTL for this decl so that, if debugging info
1674 output for global variables is still to come,
1675 this one will be omitted. */
1676 DECL_RTL (decl
) = NULL
;
1679 if (TREE_CODE (decl
) == FUNCTION_DECL
1680 && ! TREE_ASM_WRITTEN (decl
)
1681 && DECL_INITIAL (decl
) != 0
1682 && (TREE_ADDRESSABLE (decl
)
1683 || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl
)))
1684 && ! TREE_EXTERNAL (decl
))
1685 output_inline_function (decl
);
1687 /* Warn about any function
1688 declared static but not defined.
1689 We don't warn about variables,
1690 because many programs have static variables
1691 that exist only to get some text into the object file. */
1694 || (DECL_NAME (decl
) && TREE_USED (DECL_NAME (decl
))))
1695 && TREE_CODE (decl
) == FUNCTION_DECL
1696 && DECL_INITIAL (decl
) == 0
1697 && TREE_EXTERNAL (decl
)
1698 && ! TREE_PUBLIC (decl
))
1699 warning_with_decl (decl
, "`%s' declared `static' but never defined");
1700 /* Warn about static fns or vars defined but not used,
1701 but not about inline functions
1702 since unused inline statics is normal practice. */
1704 && (TREE_CODE (decl
) == FUNCTION_DECL
1705 || TREE_CODE (decl
) == VAR_DECL
)
1706 && ! TREE_EXTERNAL (decl
)
1707 && ! TREE_PUBLIC (decl
)
1708 && ! TREE_USED (decl
)
1709 && ! TREE_INLINE (decl
)
1710 /* The TREE_USED bit for file-scope decls
1711 is kept in the identifier, to handle multiple
1712 external decls in different scopes. */
1713 && ! TREE_USED (DECL_NAME (decl
)))
1714 warning_with_decl (decl
, "`%s' defined but not used");
1716 #ifdef SDB_DEBUGGING_INFO
1717 /* The COFF linker can move initialized global vars to the end.
1718 And that can screw up the symbol ordering.
1719 By putting the symbols in that order to begin with,
1720 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
1721 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
1722 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
1723 && DECL_RTL (decl
) != 0)
1724 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1726 /* Output COFF information for non-global
1727 file-scope initialized variables. */
1728 if (write_symbols
== SDB_DEBUG
1729 && TREE_CODE (decl
) == VAR_DECL
1730 && DECL_INITIAL (decl
)
1731 && DECL_RTL (decl
) != 0
1732 && GET_CODE (DECL_RTL (decl
)) == MEM
)
1733 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
1734 #endif /* SDB_DEBUGGING_INFO */
1735 #ifdef DWARF_DEBUGGING_INFO
1736 /* Output DWARF information for file-scope tenative data object
1737 declarations, file-scope (extern) function declarations (which
1738 had no corresponding body) and file-scope tagged type declarations
1739 and definitions which have not yet been forced out. */
1741 if (write_symbols
== DWARF_DEBUG
1742 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
1743 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
1748 /* Do dbx symbols */
1749 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1750 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1751 TIMEVAR (symout_time
,
1753 dbxout_finish (asm_out_file
, main_input_filename
);
1757 #ifdef DWARF_DEBUGGING_INFO
1758 if (write_symbols
== DWARF_DEBUG
)
1759 TIMEVAR (symout_time
,
1765 /* Output some stuff at end of file if nec. */
1767 end_final (main_input_filename
);
1770 ASM_FILE_END (asm_out_file
);
1773 after_finish_compilation
:
1775 /* Language-specific end of compilation actions. */
1779 /* Close the dump files. */
1781 if (flag_gen_aux_info
)
1783 fclose (aux_info_file
);
1785 unlink (aux_info_file_name
);
1789 fclose (rtl_dump_file
);
1792 fclose (jump_opt_dump_file
);
1795 fclose (cse_dump_file
);
1798 fclose (loop_dump_file
);
1801 fclose (cse2_dump_file
);
1804 fclose (flow_dump_file
);
1808 dump_combine_total_stats (combine_dump_file
);
1809 fclose (combine_dump_file
);
1813 fclose (sched_dump_file
);
1816 fclose (local_reg_dump_file
);
1818 if (global_reg_dump
)
1819 fclose (global_reg_dump_file
);
1822 fclose (sched2_dump_file
);
1825 fclose (jump2_opt_dump_file
);
1828 fclose (dbr_sched_dump_file
);
1832 fclose (stack_reg_dump_file
);
1835 /* Close non-debugging input and output files. Take special care to note
1836 whether fclose returns an error, since the pages might still be on the
1837 buffer chain while the file is open. */
1840 if (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0)
1841 fatal_io_error (asm_file_name
);
1843 /* Print the times. */
1847 fprintf (stderr
,"\n");
1848 print_time ("parse", parse_time
);
1849 print_time ("integration", integration_time
);
1850 print_time ("jump", jump_time
);
1851 print_time ("cse", cse_time
);
1852 print_time ("loop", loop_time
);
1853 print_time ("cse2", cse2_time
);
1854 print_time ("flow", flow_time
);
1855 print_time ("combine", combine_time
);
1856 print_time ("sched", sched_time
);
1857 print_time ("local-alloc", local_alloc_time
);
1858 print_time ("global-alloc", global_alloc_time
);
1859 print_time ("sched2", sched2_time
);
1860 print_time ("dbranch", dbr_sched_time
);
1861 print_time ("shorten-branch", shorten_branch_time
);
1862 print_time ("stack-reg", stack_reg_time
);
1863 print_time ("final", final_time
);
1864 print_time ("varconst", varconst_time
);
1865 print_time ("symout", symout_time
);
1866 print_time ("dump", dump_time
);
1870 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
1871 and TYPE_DECL nodes.
1873 This does nothing for local (non-static) variables.
1874 Otherwise, it sets up the RTL and outputs any assembler code
1875 (label definition, storage allocation and initialization).
1877 DECL is the declaration. If ASMSPEC is nonzero, it specifies
1878 the assembler symbol name to be used. TOP_LEVEL is nonzero
1879 if this declaration is not within a function. */
1882 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
1888 /* Declarations of variables, and of functions defined elsewhere. */
1890 /* Forward declarations for nested functions are not "external",
1891 but we need to treat them as if they were. */
1892 if (TREE_STATIC (decl
) || TREE_EXTERNAL (decl
)
1893 || TREE_CODE (decl
) == FUNCTION_DECL
)
1894 TIMEVAR (varconst_time
,
1896 make_decl_rtl (decl
, asmspec
, top_level
);
1897 /* Don't output anything
1898 when a tentative file-scope definition is seen.
1899 But at end of compilation, do output code for them. */
1900 if (! (! at_end
&& top_level
1901 && (DECL_INITIAL (decl
) == 0
1902 || DECL_INITIAL (decl
) == error_mark_node
)))
1903 assemble_variable (decl
, top_level
, at_end
);
1905 else if (TREE_REGDECL (decl
) && asmspec
!= 0)
1907 if (decode_reg_name (asmspec
) >= 0)
1909 DECL_RTL (decl
) = 0;
1910 make_decl_rtl (decl
, asmspec
, top_level
);
1913 error ("invalid register name `%s' for register variable", asmspec
);
1915 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1916 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1917 && TREE_CODE (decl
) == TYPE_DECL
)
1918 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
1920 #ifdef SDB_DEBUGGING_INFO
1921 else if (write_symbols
== SDB_DEBUG
&& top_level
1922 && TREE_CODE (decl
) == TYPE_DECL
)
1923 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
1927 /* Called after finishing a record, union or enumeral type. */
1930 rest_of_type_compilation (type
, toplev
)
1934 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
1935 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
1936 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1938 #ifdef SDB_DEBUGGING_INFO
1939 if (write_symbols
== SDB_DEBUG
)
1940 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
1944 /* This is called from finish_function (within yyparse)
1945 after each top-level definition is parsed.
1946 It is supposed to compile that function or variable
1947 and output the assembler code for it.
1948 After we return, the tree storage is freed. */
1951 rest_of_compilation (decl
)
1955 int start_time
= get_run_time ();
1957 /* Nonzero if we have saved the original DECL_INITIAL of the function,
1958 to be restored after we finish compiling the function
1959 (for use when compiling inline calls to this function). */
1960 tree saved_block_tree
= 0;
1962 /* If we are reconsidering an inline function
1963 at the end of compilation, skip the stuff for making it inline. */
1965 if (DECL_SAVED_INSNS (decl
) == 0)
1967 int specd
= TREE_INLINE (decl
);
1970 /* If requested, consider whether to make this function inline. */
1971 if (specd
|| flag_inline_functions
)
1972 TIMEVAR (integration_time
,
1974 lose
= function_cannot_inline_p (decl
);
1977 if (warn_inline
&& specd
)
1978 warning_with_decl (decl
, lose
);
1979 TREE_INLINE (decl
) = 0;
1982 TREE_INLINE (decl
) = 1;
1985 insns
= get_insns ();
1987 /* Dump the rtl code if we are dumping rtl. */
1992 fprintf (rtl_dump_file
, "\n;; Function %s\n\n",
1993 IDENTIFIER_POINTER (DECL_NAME (decl
)));
1994 if (DECL_SAVED_INSNS (decl
))
1995 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
1996 print_rtl (rtl_dump_file
, insns
);
1997 fflush (rtl_dump_file
);
2000 /* If function is inline, and we don't yet know whether to
2001 compile it by itself, defer decision till end of compilation.
2002 finish_compilation will call rest_of_compilation again
2003 for those functions that need to be output. */
2005 if (TREE_INLINE (decl
)
2006 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
2007 && ! flag_keep_inline_functions
)
2008 || TREE_EXTERNAL (decl
)))
2010 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
2011 goto exit_rest_of_compilation
;
2014 /* If we have to compile the function now, save its rtl
2015 so that its compilation will not affect what others get. */
2016 if (TREE_INLINE (decl
))
2018 saved_block_tree
= DECL_INITIAL (decl
);
2019 TIMEVAR (integration_time
, save_for_inline_copying (decl
));
2023 /* Suppress warnings for unused static functions
2024 defined (not just declared) in system headers. */
2025 if (in_system_header
&& TREE_STATIC (decl
) && !TREE_INLINE (decl
))
2026 TREE_USED (decl
) = 1;
2028 TREE_ASM_WRITTEN (decl
) = 1;
2030 /* Now that integrate will no longer see our rtl, we need not distinguish
2031 between the return value of this function and the return value of called
2033 rtx_equal_function_value_matters
= 0;
2035 if (rtl_dump_and_exit
|| flag_syntax_only
)
2037 goto exit_rest_of_compilation
;
2040 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
2041 Note that that may have been done above, in save_for_inline_copying.
2042 The call to resume_temporary_allocation near the end of this function
2043 goes back to the usual state of affairs. */
2045 rtl_in_current_obstack ();
2048 /* If we are doing position-independent code generation, now
2049 is the time to output special prologues and epilogues.
2050 We do not want to do this earlier, because it just clutters
2051 up inline functions with meaningless insns. */
2056 insns
= get_insns ();
2058 /* Copy any shared structure that should not be shared. */
2060 unshare_all_rtl (insns
);
2062 /* Instantiate all virtual registers. */
2064 instantiate_virtual_regs (current_function_decl
, get_insns ());
2066 /* See if we have allocated stack slots that are not directly addressable.
2067 If so, scan all the insns and create explicit address computation
2068 for all references to such slots. */
2069 /* fixup_stack_slots (); */
2071 /* Do jump optimization the first time, if -opt.
2072 Also do it if -W, but in that case it doesn't change the rtl code,
2073 it only computes whether control can drop off the end of the function. */
2075 if (optimize
> 0 || extra_warnings
|| warn_return_type
2076 /* If function is `volatile', we should warn if it tries to return. */
2077 || TREE_THIS_VOLATILE (decl
))
2079 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
2080 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 1));
2083 /* Dump rtl code after jump, if we are doing that. */
2088 fprintf (jump_opt_dump_file
, "\n;; Function %s\n\n",
2089 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2090 print_rtl (jump_opt_dump_file
, insns
);
2091 fflush (jump_opt_dump_file
);
2094 /* Perform common subexpression elimination.
2095 Nonzero value from `cse_main' means that jumps were simplified
2096 and some code may now be unreachable, so do
2097 jump optimization again. */
2102 fprintf (cse_dump_file
, "\n;; Function %s\n\n",
2103 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2108 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
2110 if (flag_thread_jumps
)
2111 /* Hacks by tiemann & kenner. */
2112 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2114 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
2116 TIMEVAR (cse_time
, delete_dead_from_cse (insns
, max_reg_num ()));
2119 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2122 /* Dump rtl code after cse, if we are doing that. */
2127 print_rtl (cse_dump_file
, insns
);
2128 fflush (cse_dump_file
);
2134 fprintf (loop_dump_file
, "\n;; Function %s\n\n",
2135 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2138 /* Move constant computations out of loops. */
2144 loop_optimize (insns
, loop_dump
? loop_dump_file
: 0);
2148 /* Dump rtl code after loop opt, if we are doing that. */
2153 print_rtl (loop_dump_file
, insns
);
2154 fflush (loop_dump_file
);
2160 fprintf (cse2_dump_file
, "\n;; Function %s\n\n",
2161 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2164 if (optimize
> 0 && flag_rerun_cse_after_loop
)
2166 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
2168 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
2169 1, cse2_dump_file
));
2171 TIMEVAR (jump_time
, jump_optimize (insns
, 0, 0, 0));
2174 if (optimize
> 0 && flag_thread_jumps
)
2175 /* This pass of jump threading straightens out code
2176 that was kinked by loop optimization. */
2177 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
2179 /* Dump rtl code after cse, if we are doing that. */
2184 print_rtl (cse2_dump_file
, insns
);
2185 fflush (cse2_dump_file
);
2188 /* We are no longer anticipating cse in this function, at least. */
2190 cse_not_expected
= 1;
2192 /* Now we choose between stupid (pcc-like) register allocation
2193 (if we got the -noreg switch and not -opt)
2194 and smart register allocation. */
2196 if (optimize
> 0) /* Stupid allocation probably won't work */
2197 obey_regdecls
= 0; /* if optimizations being done. */
2201 /* Print function header into flow dump now
2202 because doing the flow analysis makes some of the dump. */
2207 fprintf (flow_dump_file
, "\n;; Function %s\n\n",
2208 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2215 regclass (insns
, max_reg_num ());
2216 stupid_life_analysis (insns
, max_reg_num (),
2222 /* Do control and data flow analysis,
2223 and write some of the results to dump file. */
2225 TIMEVAR (flow_time
, flow_analysis (insns
, max_reg_num (),
2227 if (warn_uninitialized
)
2229 uninitialized_vars_warning (DECL_INITIAL (decl
));
2230 setjmp_args_warning ();
2234 /* Dump rtl after flow analysis. */
2239 print_rtl (flow_dump_file
, insns
);
2240 fflush (flow_dump_file
);
2243 /* If -opt, try combining insns through substitution. */
2246 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
2248 /* Dump rtl code after insn combination. */
2253 fprintf (combine_dump_file
, "\n;; Function %s\n\n",
2254 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2255 dump_combine_stats (combine_dump_file
);
2256 print_rtl (combine_dump_file
, insns
);
2257 fflush (combine_dump_file
);
2260 /* Print function header into sched dump now
2261 because doing the sched analysis makes some of the dump. */
2266 fprintf (sched_dump_file
, "\n;; Function %s\n\n",
2267 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2270 if (optimize
> 0 && flag_schedule_insns
)
2272 /* Do control and data sched analysis,
2273 and write some of the results to dump file. */
2275 TIMEVAR (sched_time
, schedule_insns (sched_dump_file
));
2278 /* Dump rtl after instruction scheduling. */
2283 print_rtl (sched_dump_file
, insns
);
2284 fflush (sched_dump_file
);
2287 /* Unless we did stupid register allocation,
2288 allocate pseudo-regs that are used only within 1 basic block. */
2291 TIMEVAR (local_alloc_time
,
2293 regclass (insns
, max_reg_num ());
2297 /* Dump rtl code after allocating regs within basic blocks. */
2302 fprintf (local_reg_dump_file
, "\n;; Function %s\n\n",
2303 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2304 dump_flow_info (local_reg_dump_file
);
2305 dump_local_alloc (local_reg_dump_file
);
2306 print_rtl (local_reg_dump_file
, insns
);
2307 fflush (local_reg_dump_file
);
2310 if (global_reg_dump
)
2312 fprintf (global_reg_dump_file
, "\n;; Function %s\n\n",
2313 IDENTIFIER_POINTER (DECL_NAME (decl
))));
2315 /* Unless we did stupid register allocation,
2316 allocate remaining pseudo-regs, then do the reload pass
2317 fixing up any insns that are invalid. */
2319 TIMEVAR (global_alloc_time
,
2322 global_alloc (global_reg_dump
? global_reg_dump_file
: 0);
2325 global_reg_dump
? global_reg_dump_file
: 0);
2328 if (global_reg_dump
)
2331 dump_global_regs (global_reg_dump_file
);
2332 print_rtl (global_reg_dump_file
, insns
);
2333 fflush (global_reg_dump_file
);
2336 reload_completed
= 1;
2338 if (optimize
> 0 && flag_schedule_insns_after_reload
)
2343 fprintf (sched2_dump_file
, "\n;; Function %s\n\n",
2344 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2347 /* Do control and data sched analysis again,
2348 and write some more of the results to dump file. */
2350 TIMEVAR (sched2_time
, schedule_insns (sched2_dump_file
));
2352 /* Dump rtl after post-reorder instruction scheduling. */
2357 print_rtl (sched2_dump_file
, insns
);
2358 fflush (sched2_dump_file
);
2362 #ifdef LEAF_REGISTERS
2364 if (optimize
> 0 && only_leaf_regs_used () && leaf_function_p ())
2368 /* One more attempt to remove jumps to .+1
2369 left by dead-store-elimination.
2370 Also do cross-jumping this time
2371 and delete no-op move insns. */
2375 TIMEVAR (jump_time
, jump_optimize (insns
, 1, 1, 0));
2378 /* Dump rtl code after jump, if we are doing that. */
2383 fprintf (jump2_opt_dump_file
, "\n;; Function %s\n\n",
2384 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2385 print_rtl (jump2_opt_dump_file
, insns
);
2386 fflush (jump2_opt_dump_file
);
2389 /* If a scheduling pass for delayed branches is to be done,
2390 call the scheduling code. */
2393 if (optimize
> 0 && flag_delayed_branch
)
2395 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, dbr_sched_dump_file
));
2400 fprintf (dbr_sched_dump_file
, "\n;; Function %s\n\n",
2401 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2402 print_rtl (dbr_sched_dump_file
, insns
);
2403 fflush (dbr_sched_dump_file
);
2410 /* Shorten branches. */
2411 TIMEVAR (shorten_branch_time
,
2413 shorten_branches (get_insns ());
2417 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, stack_reg_dump_file
));
2422 fprintf (stack_reg_dump_file
, "\n;; Function %s\n\n",
2423 IDENTIFIER_POINTER (DECL_NAME (decl
)));
2424 print_rtl (stack_reg_dump_file
, insns
);
2425 fflush (stack_reg_dump_file
);
2430 /* Now turn the rtl into assembler code. */
2432 TIMEVAR (final_time
,
2437 /* Get the function's name, as described by its RTL.
2438 This may be different from the DECL_NAME name used
2439 in the source file. */
2441 x
= DECL_RTL (decl
);
2442 if (GET_CODE (x
) != MEM
)
2445 if (GET_CODE (x
) != SYMBOL_REF
)
2447 fnname
= XSTR (x
, 0);
2449 assemble_start_function (decl
, fnname
);
2450 final_start_function (insns
, asm_out_file
, optimize
);
2451 final (insns
, asm_out_file
, optimize
, 0);
2452 final_end_function (insns
, asm_out_file
, optimize
);
2453 assemble_end_function (decl
, fnname
);
2454 fflush (asm_out_file
);
2457 /* Write DBX symbols if requested */
2459 /* Note that for those inline functions where we don't initially
2460 know for certain that we will be generating an out-of-line copy,
2461 the first invocation of this routine (rest_of_compilation) will
2462 skip over this code by doing a `goto exit_rest_of_compilation;'.
2463 Later on, finish_compilation will call rest_of_compilation again
2464 for those inline functions that need to have out-of-line copies
2465 generated. During that call, we *will* be routed past here. */
2467 #ifdef DBX_DEBUGGING_INFO
2468 if (write_symbols
== DBX_DEBUG
)
2469 TIMEVAR (symout_time
, dbxout_function (decl
));
2472 #ifdef DWARF_DEBUGGING_INFO
2473 if (write_symbols
== DWARF_DEBUG
)
2474 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
2477 exit_rest_of_compilation
:
2479 /* In case the function was not output,
2480 don't leave any temporary anonymous types
2481 queued up for sdb output. */
2482 #ifdef SDB_DEBUGGING_INFO
2483 if (write_symbols
== SDB_DEBUG
)
2487 /* Put back the tree of subblocks from before we copied it.
2488 Code generation and the output of debugging info may have modified
2489 the copy, but the original is unchanged. */
2491 if (saved_block_tree
!= 0)
2492 DECL_INITIAL (decl
) = saved_block_tree
;
2494 reload_completed
= 0;
2496 /* Clear out the real_constant_chain before some of the rtx's
2497 it runs through become garbage. */
2499 clear_const_double_mem ();
2501 /* Cancel the effect of rtl_in_current_obstack. */
2503 resume_temporary_allocation ();
2505 /* The parsing time is all the time spent in yyparse
2506 *except* what is spent in this function. */
2508 parse_time
-= get_run_time () - start_time
;
2511 /* Entry point of cc1/c++. Decode command args, then call compile_file.
2512 Exit code is 35 if can't open files, 34 if fatal error,
2513 33 if had nonfatal errors, else success. */
2516 main (argc
, argv
, envp
)
2523 int flag_print_mem
= 0;
2524 int version_flag
= 0;
2527 /* save in case md file wants to emit args as a comment. */
2531 p
= argv
[0] + strlen (argv
[0]);
2532 while (p
!= argv
[0] && p
[-1] != '/') --p
;
2536 /* Get rid of any avoidable limit on stack size. */
2540 /* Set the stack limit huge so that alloca does not fail. */
2541 getrlimit (RLIMIT_STACK
, &rlim
);
2542 rlim
.rlim_cur
= rlim
.rlim_max
;
2543 setrlimit (RLIMIT_STACK
, &rlim
);
2545 #endif /* RLIMIT_STACK */
2547 signal (SIGFPE
, float_signal
);
2549 signal (SIGPIPE
, pipe_closed
);
2551 decl_printable_name
= decl_name
;
2552 lang_expand_expr
= (struct rtx_def
*(*)()) do_abort
;
2554 /* Initialize whether `char' is signed. */
2555 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
2556 #ifdef DEFAULT_SHORT_ENUMS
2557 /* Initialize how much space enums occupy, by default. */
2558 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
2561 /* Scan to see what optimization level has been specified. That will
2562 determine the default value of many flags. */
2563 for (i
= 1; i
< argc
; i
++)
2565 if (!strcmp (argv
[i
], "-O"))
2569 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
2571 /* Handle -O2, -O3, -O69, ... */
2572 char *p
= &argv
[i
][2];
2576 if (! (c
>= '0' && c
<= '9'))
2579 optimize
= atoi (&argv
[i
][2]);
2583 obey_regdecls
= (optimize
== 0);
2592 flag_thread_jumps
= 1;
2594 flag_delayed_branch
= 1;
2600 flag_cse_follow_jumps
= 1;
2601 flag_cse_skip_blocks
= 1;
2602 flag_expensive_optimizations
= 1;
2603 flag_strength_reduce
= 1;
2604 flag_rerun_cse_after_loop
= 1;
2605 flag_caller_saves
= 1;
2606 #ifdef INSN_SCHEDULING
2607 flag_schedule_insns
= 1;
2608 flag_schedule_insns_after_reload
= 1;
2612 #ifdef OPTIMIZATION_OPTIONS
2613 /* Allow default optimizations to be specified on a per-machine basis. */
2614 OPTIMIZATION_OPTIONS (optimize
);
2617 /* Initialize register usage now so switches may override. */
2621 set_target_switch ("");
2623 for (i
= 1; i
< argc
; i
++)
2625 if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
2627 register char *str
= argv
[i
] + 1;
2632 set_target_switch (&str
[1]);
2633 else if (!strcmp (str
, "dumpbase"))
2635 dump_base_name
= argv
[++i
];
2637 else if (str
[0] == 'd')
2639 register char *p
= &str
[1];
2647 global_reg_dump
= 1;
2653 cse_dump
= 1, cse2_dump
= 1;
2671 global_reg_dump
= 1;
2689 flag_print_asm_name
= 1;
2711 rtl_dump_and_exit
= 1;
2715 else if (str
[0] == 'f')
2718 register char *p
= &str
[1];
2721 /* Some kind of -f option.
2722 P's value is the option sans `-f'.
2723 Search for it in the table of options. */
2726 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
2729 if (!strcmp (p
, f_options
[j
].string
))
2731 *f_options
[j
].variable
= f_options
[j
].on_value
;
2732 /* A goto here would be cleaner,
2733 but breaks the vax pcc. */
2736 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2737 && ! strcmp (p
+3, f_options
[j
].string
))
2739 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
2746 else if (!strncmp (p
, "fixed-", 6))
2747 fix_register (&p
[6], 1, 1);
2748 else if (!strncmp (p
, "call-used-", 10))
2749 fix_register (&p
[10], 0, 1);
2750 else if (!strncmp (p
, "call-saved-", 11))
2751 fix_register (&p
[11], 0, 0);
2752 else if (! lang_decode_option (argv
[i
]))
2753 error ("Invalid option `%s'", argv
[i
]);
2755 else if (str
[0] == 'O')
2757 register char *p
= str
+1;
2758 while (*p
&& *p
>= '0' && *p
<= '9')
2763 error ("Invalid option `%s'", argv
[i
]);
2765 else if (!strcmp (str
, "pedantic"))
2767 else if (!strcmp (str
, "pedantic-errors"))
2768 flag_pedantic_errors
= pedantic
= 1;
2769 else if (lang_decode_option (argv
[i
]))
2771 else if (!strcmp (str
, "quiet"))
2773 else if (!strcmp (str
, "version"))
2775 else if (!strcmp (str
, "w"))
2776 inhibit_warnings
= 1;
2777 else if (!strcmp (str
, "W"))
2780 warn_uninitialized
= 1;
2782 else if (str
[0] == 'W')
2785 register char *p
= &str
[1];
2788 /* Some kind of -W option.
2789 P's value is the option sans `-W'.
2790 Search for it in the table of options. */
2793 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
2796 if (!strcmp (p
, W_options
[j
].string
))
2798 *W_options
[j
].variable
= W_options
[j
].on_value
;
2799 /* A goto here would be cleaner,
2800 but breaks the vax pcc. */
2803 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
2804 && ! strcmp (p
+3, W_options
[j
].string
))
2806 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
2813 else if (!strncmp (p
, "id-clash-", 9))
2819 if (*endp
>= '0' && *endp
<= '9')
2822 error ("Invalid option `%s'", argv
[i
]);
2825 id_clash_len
= atoi (str
+ 10);
2828 error ("Invalid option `%s'", argv
[i
]);
2830 else if (!strcmp (str
, "p"))
2832 else if (!strcmp (str
, "a"))
2834 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
2835 warning ("`-a' option (basic block profile) not supported");
2837 profile_block_flag
= 1;
2840 else if (str
[0] == 'g')
2847 while (*p
&& (*p
< '0' || *p
> '9'))
2851 while (*q
&& (*q
>= '0' && *q
<= '9'))
2856 level
= 2; /* default debugging info level */
2857 if (*q
|| level
> 3)
2859 warning ("invalid debug level specification in option: `-%s'",
2861 warning ("no debugging information will be generated");
2865 /* If more than one debugging type is supported,
2866 you must define PREFERRED_DEBUGGING_TYPE
2867 to choose a format in a system-dependent way. */
2868 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
2869 + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
2870 #ifdef PREFERRED_DEBUGGING_TYPE
2871 if (!strncmp (str
, "ggdb", len
))
2872 write_symbols
= PREFERRED_DEBUGGING_TYPE
;
2873 #else /* no PREFERRED_DEBUGGING_TYPE */
2874 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
2875 #endif /* no PREFERRED_DEBUGGING_TYPE */
2876 #endif /* More than one debugger format enabled. */
2877 #ifdef DBX_DEBUGGING_INFO
2878 if (write_symbols
!= NO_DEBUG
)
2880 else if (!strncmp (str
, "ggdb", len
))
2881 write_symbols
= DBX_DEBUG
;
2882 else if (!strncmp (str
, "gstabs", len
))
2883 write_symbols
= DBX_DEBUG
;
2885 /* Always enable extensions for -ggdb or -gstabs+,
2886 always disable for -gstabs.
2887 For plain -g, use system-specific default. */
2888 if (write_symbols
== DBX_DEBUG
&& !strncmp (str
, "ggdb", len
)
2890 use_gdb_dbx_extensions
= 1;
2891 else if (write_symbols
== DBX_DEBUG
&& !strcmp (str
, "gstabs+"))
2892 use_gdb_dbx_extensions
= 1;
2893 else if (write_symbols
== DBX_DEBUG
2894 && !strncmp (str
, "gstabs", len
) && len
>= 2)
2895 use_gdb_dbx_extensions
= 0;
2897 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2898 #endif /* DBX_DEBUGGING_INFO */
2899 #ifdef DWARF_DEBUGGING_INFO
2900 if (write_symbols
!= NO_DEBUG
)
2902 else if (!strncmp (str
, "ggdb", len
))
2903 write_symbols
= DWARF_DEBUG
;
2904 /* For orthogonality. */
2905 else if (!strncmp (str
, "gdwarf", len
))
2906 write_symbols
= DWARF_DEBUG
;
2908 #ifdef SDB_DEBUGGING_INFO
2909 if (write_symbols
!= NO_DEBUG
)
2911 else if (!strncmp (str
, "ggdb", len
))
2912 write_symbols
= SDB_DEBUG
;
2913 else if (!strncmp (str
, "gcoff", len
))
2914 write_symbols
= SDB_DEBUG
;
2915 #endif /* SDB_DEBUGGING_INFO */
2916 #ifdef XCOFF_DEBUGGING_INFO
2917 if (write_symbols
!= NO_DEBUG
)
2919 else if (!strncmp (str
, "ggdb", len
))
2920 write_symbols
= XCOFF_DEBUG
;
2921 else if (!strncmp (str
, "gxcoff", len
))
2922 write_symbols
= XCOFF_DEBUG
;
2924 /* Always enable extensions for -ggdb,
2925 always disable for -gxcoff.
2926 For plain -g, use system-specific default. */
2927 if (write_symbols
== XCOFF_DEBUG
&& !strncmp (str
, "ggdb", len
)
2929 use_gdb_dbx_extensions
= 1;
2930 else if (write_symbols
== DBX_DEBUG
2931 && !strncmp (str
, "gxcoff", len
) && len
>= 2)
2932 use_gdb_dbx_extensions
= 0;
2934 use_gdb_dbx_extensions
= DEFAULT_GDB_EXTENSIONS
;
2936 if (write_symbols
== NO_DEBUG
)
2937 warning ("`-%s' option not supported on this version of GCC", str
);
2938 else if (level
== 0)
2939 write_symbols
= NO_DEBUG
;
2941 debug_info_level
= (enum debug_info_level
) level
;
2943 else if (!strcmp (str
, "o"))
2945 asm_file_name
= argv
[++i
];
2947 else if (str
[0] == 'G')
2949 g_switch_set
= TRUE
;
2950 g_switch_value
= atoi ((str
[1] != '\0') ? str
+1 : argv
[++i
]);
2952 else if (!strncmp (str
, "aux-info", 8))
2954 flag_gen_aux_info
= 1;
2955 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
2958 error ("Invalid option `%s'", argv
[i
]);
2960 else if (argv
[i
][0] == '+')
2962 if (lang_decode_option (argv
[i
]))
2965 error ("Invalid option `%s'", argv
[i
]);
2971 /* Inlining does not work if not optimizing,
2972 so force it not to be done. */
2979 #ifdef OVERRIDE_OPTIONS
2980 /* Some machines may reject certain combinations of options. */
2984 /* Unrolling all loops implies that standard loop unrolling must also
2986 if (flag_unroll_all_loops
)
2987 flag_unroll_loops
= 1;
2988 /* Loop unrolling requires that strength_reduction be on also. Silently
2989 turn on strength reduction here if it isn't already on. Also, the loop
2990 unrolling code assumes that cse will be run after loop, so that must
2991 be turned on also. */
2992 if (flag_unroll_loops
)
2994 flag_strength_reduce
= 1;
2995 flag_rerun_cse_after_loop
= 1;
2998 /* Warn about options that are not supported on this machine. */
2999 #ifndef INSN_SCHEDULING
3000 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
3001 warning ("instruction scheduling not supported on this target machine");
3004 if (flag_delayed_branch
)
3005 warning ("this target machine does not have delayed branches");
3008 /* If we are in verbose mode, write out the version and maybe all the
3009 option flags in use. */
3012 fprintf (stderr
, "%s version %s", language_string
, version_string
);
3013 #ifdef TARGET_VERSION
3018 #define __VERSION__ "[unknown]"
3020 fprintf (stderr
, " compiled by GNU C version %s.\n", __VERSION__
);
3022 fprintf (stderr
, " compiled by CC.\n");
3025 print_switch_values ();
3028 /* Now that register usage is specified, convert it to HARD_REG_SETs. */
3031 compile_file (filename
);
3036 char *lim
= (char *) sbrk (0);
3038 fprintf (stderr
, "Data size %d.\n",
3039 (int) lim
- (int) &environ
);
3043 system ("ps -l 1>&2");
3046 #endif /* not USG */
3048 #endif /* not VMS */
3051 exit (FATAL_EXIT_CODE
);
3053 exit (FATAL_EXIT_CODE
);
3054 exit (SUCCESS_EXIT_CODE
);
3058 /* Decode -m switches. */
3060 /* Here is a table, controlled by the tm.h file, listing each -m switch
3061 and which bits in `target_switches' it should set or clear.
3062 If VALUE is positive, it is bits to set.
3063 If VALUE is negative, -VALUE is bits to clear.
3064 (The sign bit is not used so there is no confusion.) */
3066 struct {char *name
; int value
;} target_switches
[]
3069 /* This table is similar, but allows the switch to have a value. */
3071 #ifdef TARGET_OPTIONS
3072 struct {char *prefix
; char ** variable
;} target_options
[]
3076 /* Decode the switch -mNAME. */
3079 set_target_switch (name
)
3085 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3086 if (!strcmp (target_switches
[j
].name
, name
))
3088 if (target_switches
[j
].value
< 0)
3089 target_flags
&= ~-target_switches
[j
].value
;
3091 target_flags
|= target_switches
[j
].value
;
3095 #ifdef TARGET_OPTIONS
3097 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
3099 int len
= strlen (target_options
[j
].prefix
);
3100 if (!strncmp (target_options
[j
].prefix
, name
, len
))
3102 *target_options
[j
].variable
= name
+ len
;
3109 error ("Invalid option `%s'", name
);
3112 /* Variable used for communication between the following two routines. */
3114 static int line_position
;
3116 /* Print an option value and adjust the position in the line. */
3119 print_single_switch (type
, name
)
3122 fprintf (stderr
, " %s%s", type
, name
);
3124 line_position
+= strlen (type
) + strlen (name
) + 1;
3126 if (line_position
> 65)
3128 fprintf (stderr
, "\n\t");
3133 /* Print default target switches for -version. */
3136 print_switch_values ()
3140 fprintf (stderr
, "enabled:");
3143 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
3144 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
3145 print_single_switch ("-f", f_options
[j
].string
);
3147 for (j
= 0; j
< sizeof W_options
/ sizeof W_options
[0]; j
++)
3148 if (*W_options
[j
].variable
== W_options
[j
].on_value
)
3149 print_single_switch ("-W", W_options
[j
].string
);
3151 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
3152 if (target_switches
[j
].name
[0] != '\0'
3153 && target_switches
[j
].value
> 0
3154 && ((target_switches
[j
].value
& target_flags
)
3155 == target_switches
[j
].value
))
3156 print_single_switch ("-m", target_switches
[j
].name
);
3158 fprintf (stderr
, "\n");