1 /* Top level of GNU C compiler
2 Copyright (C) 1987, 88, 89, 92-98, 1999 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. */
27 #undef FLOAT /* This is for hpux. They should change hpux. */
28 #undef FFS /* Some systems define this in param.h. */
33 #ifdef HAVE_SYS_RESOURCE_H
34 # include <sys/resource.h>
37 #ifdef HAVE_SYS_TIMES_H
38 # include <sys/times.h>
45 #include "insn-attr.h"
46 #include "insn-codes.h"
47 #include "insn-config.h"
54 #include "basic-block.h"
57 #ifdef DWARF_DEBUGGING_INFO
61 #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
62 #include "dwarf2out.h"
65 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO)
69 #ifdef SDB_DEBUGGING_INFO
73 #ifdef XCOFF_DEBUGGING_INFO
78 /* The extra parameters substantially improve the I/O performance. */
80 vms_fopen (fname, type)
84 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
85 fixed arguments, which matches ANSI's specification but not VAXCRTL's
86 pre-ANSI implementation. This hack circumvents the mismatch problem. */
87 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
90 return (*vmslib_fopen) (fname, type, "mbc=32",
91 "deq=64", "fop=tef", "shr=nil");
93 return (*vmslib_fopen) (fname, type, "mbc=32");
95 #define fopen vms_fopen
98 #ifndef DEFAULT_GDB_EXTENSIONS
99 #define DEFAULT_GDB_EXTENSIONS 1
102 /* If more than one debugging type is supported, you must define
103 PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
105 This is one long line cause VAXC can't handle a \-newline. */
106 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
107 #ifndef PREFERRED_DEBUGGING_TYPE
108 You Lose! You must define PREFERRED_DEBUGGING_TYPE!
109 #endif /* no PREFERRED_DEBUGGING_TYPE */
110 #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
111 so the following code needn't care. */
112 #ifdef DBX_DEBUGGING_INFO
113 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
115 #ifdef SDB_DEBUGGING_INFO
116 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
118 #ifdef DWARF_DEBUGGING_INFO
119 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
121 #ifdef DWARF2_DEBUGGING_INFO
122 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
124 #ifdef XCOFF_DEBUGGING_INFO
125 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
127 #endif /* More than one debugger format enabled. */
129 /* If still not defined, must have been because no debugging formats
131 #ifndef PREFERRED_DEBUGGING_TYPE
132 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
135 extern int rtx_equal_function_value_matters;
137 #if ! (defined (VMS) || defined (OS2))
138 extern char **environ;
140 extern char *version_string, *language_string;
142 /* Carry information from ASM_DECLARE_OBJECT_NAME
143 to ASM_FINISH_DECLARE_OBJECT. */
145 extern int size_directive_output;
146 extern tree last_assemble_variable_decl;
148 extern char *init_parse PVPROTO((char *));
149 extern void finish_parse ();
150 extern void init_decl_processing ();
151 extern void init_obstacks ();
152 extern void init_tree_codes ();
153 extern void init_rtl ();
154 extern void init_regs ();
155 extern void init_optabs ();
156 extern void init_stmt ();
157 extern void init_reg_sets ();
158 extern void dump_flow_info ();
159 extern void dump_sched_info ();
160 extern void dump_local_alloc ();
161 extern void regset_release_memory ();
163 extern void print_rtl ();
164 extern void print_rtl_with_bb ();
166 void rest_of_decl_compilation ();
167 void error_with_file_and_line PVPROTO((const char *file,
168 int line, const char *s, ...));
169 void error_with_decl PVPROTO((tree decl, const char *s, ...));
170 void error_for_asm PVPROTO((rtx insn, const char *s, ...));
171 void notice PVPROTO((const char *s, ...));
172 void error PVPROTO((const char *s, ...));
173 void fatal PVPROTO((const char *s, ...));
174 void warning_with_file_and_line PVPROTO((const char *file,
175 int line, const char *s, ...));
176 void warning_with_decl PVPROTO((tree decl, const char *s, ...));
177 void warning PVPROTO((const char *s, ...));
178 void pedwarn PVPROTO((const char *s, ...));
179 void pedwarn_with_decl PVPROTO((tree decl, const char *s, ...));
180 void pedwarn_with_file_and_line PVPROTO((const char *file,
181 int line, const char *s, ...));
182 void sorry PVPROTO((const char *s, ...));
183 static void set_target_switch PROTO((const char *));
184 static char *decl_name PROTO((tree, int));
185 static void vmessage PROTO((const char *, const char *, va_list));
186 static void v_message_with_file_and_line PROTO((const char *, int, int,
187 const char *, va_list));
188 static void v_message_with_decl PROTO((tree, int, const char *, va_list));
189 static void file_and_line_for_asm PROTO((rtx, char **, int *));
190 static void v_error_with_file_and_line PROTO((const char *, int,
191 const char *, va_list));
192 static void v_error_with_decl PROTO((tree, const char *, va_list));
193 static void v_error_for_asm PROTO((rtx, const char *, va_list));
194 static void verror PROTO((const char *, va_list));
195 static void vfatal PROTO((const char *, va_list)) ATTRIBUTE_NORETURN;
196 static void v_warning_with_file_and_line PROTO ((const char *, int,
197 const char *, va_list));
198 static void v_warning_with_decl PROTO((tree, const char *, va_list));
199 static void v_warning_for_asm PROTO((rtx, const char *, va_list));
200 static void vwarning PROTO((const char *, va_list));
201 static void vpedwarn PROTO((const char *, va_list));
202 static void v_pedwarn_with_decl PROTO((tree, const char *, va_list));
203 static void v_pedwarn_with_file_and_line PROTO((const char *, int,
204 const char *, va_list));
205 static void vsorry PROTO((const char *, va_list));
206 static void float_signal PROTO((int)) ATTRIBUTE_NORETURN;
207 static void pipe_closed PROTO((int)) ATTRIBUTE_NORETURN;
208 #ifdef ASM_IDENTIFY_LANGUAGE
209 /* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */
210 static void output_lang_identify PROTO((FILE *)) ATTRIBUTE_UNUSED;
212 static void open_dump_file PROTO((const char *, const char *));
213 static void close_dump_file PROTO((void (*) (FILE *, rtx), rtx));
214 static void dump_rtl PROTO((const char *, tree, void (*) (FILE *, rtx), rtx));
215 static void clean_dump_file PROTO((const char *));
216 static void compile_file PROTO((char *));
217 static void display_help PROTO ((void));
219 static void print_version PROTO((FILE *, const char *));
220 static int print_single_switch PROTO((FILE *, int, int, const char *,
221 const char *, const char *,
222 const char *, const char *));
223 static void print_switch_values PROTO((FILE *, int, int, const char *,
224 const char *, const char *));
226 void print_rtl_graph_with_bb PROTO ((const char *, const char *, rtx));
227 void clean_graph_dump_file PROTO ((const char *, const char *));
228 void finish_graph_dump_file PROTO ((const char *, const char *));
229 /* Length of line when printing switch values. */
232 /* Name of program invoked, sans directories. */
236 /* Copy of arguments to main. */
240 /* Name of current original source file (what was input to cpp).
241 This comes from each #-command in the actual input. */
243 char *input_filename;
245 /* Name of top-level original source file (what was input to cpp).
246 This comes from the #-command at the beginning of the actual input.
247 If there isn't any there, then this is the cc1 input file name. */
249 char *main_input_filename;
251 /* Current line number in real source file. */
255 /* Nonzero if it is unsafe to create any new pseudo registers. */
258 /* Stack of currently pending input files. */
260 struct file_stack *input_file_stack;
262 /* Incremented on each change to input_file_stack. */
263 int input_file_stack_tick;
265 /* FUNCTION_DECL for function now being parsed or compiled. */
267 extern tree current_function_decl;
269 /* Name to use as base of names for dump output files. */
271 const char *dump_base_name;
273 /* Bit flags that specify the machine subtype we are compiling for.
274 Bits are tested using macros TARGET_... defined in the tm.h file
275 and set by `-m...' switches. Must be defined in rtlanal.c. */
277 extern int target_flags;
279 /* Flags saying which kinds of debugging dump have been requested. */
282 int rtl_dump_and_exit = 0;
283 int jump_opt_dump = 0;
284 int addressof_dump = 0;
289 int branch_prob_dump = 0;
291 int combine_dump = 0;
292 int regmove_dump = 0;
294 int local_reg_dump = 0;
295 int global_reg_dump = 0;
298 int jump2_opt_dump = 0;
300 int dbr_sched_dump = 0;
302 int flag_print_asm_name = 0;
304 int stack_reg_dump = 0;
306 #ifdef MACHINE_DEPENDENT_REORG
307 int mach_dep_reorg_dump = 0;
309 enum graph_dump_types graph_dump_format;
311 /* Name for output file of assembly code, specified with -o. */
315 /* Value of the -G xx switch, and whether it was passed or not. */
319 /* Type(s) of debugging information we are producing (if any).
320 See flags.h for the definitions of the different possible
321 types of debugging information. */
322 enum debug_info_type write_symbols = NO_DEBUG;
324 /* Level of debugging information we are producing. See flags.h
325 for the definitions of the different possible levels. */
326 enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
328 /* Nonzero means use GNU-only extensions in the generated symbolic
329 debugging information. */
330 /* Currently, this only has an effect when write_symbols is set to
331 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
332 int use_gnu_debug_info_extensions = 0;
334 /* Nonzero means do optimizations. -O.
335 Particular numeric values stand for particular amounts of optimization;
336 thus, -O2 stores 2 here. However, the optimizations beyond the basic
337 ones are not controlled directly by this variable. Instead, they are
338 controlled by individual `flag_...' variables that are defaulted
339 based on this variable. */
343 /* Nonzero means optimize for size. -Os.
344 The only valid values are zero and non-zero. When optimize_size is
345 non-zero, optimize defaults to 2, but certain individual code
346 bloating optimizations are disabled. */
348 int optimize_size = 0;
350 /* Number of error messages and warning messages so far. */
353 int warningcount = 0;
356 /* Pointer to function to compute the name to use to print a declaration.
357 DECL is the declaration in question.
358 VERBOSITY determines what information will be printed:
359 0: DECL_NAME, demangled as necessary.
360 1: and scope information.
361 2: and any other information that might be interesting, such as function
362 parameter types in C++. */
364 char *(*decl_printable_name) PROTO ((tree, int));
366 /* Pointer to function to compute rtl for a language-specific tree code. */
368 typedef rtx (*lang_expand_expr_t)
369 PROTO ((union tree_node *, rtx, enum machine_mode,
370 enum expand_modifier modifier));
372 lang_expand_expr_t lang_expand_expr = 0;
374 /* Pointer to function to finish handling an incomplete decl at the
375 end of compilation. */
377 void (*incomplete_decl_finalize_hook) PROTO((tree)) = 0;
379 /* Nonzero if generating code to do profiling. */
381 int profile_flag = 0;
383 /* Nonzero if generating code to do profiling on a line-by-line basis. */
385 int profile_block_flag;
387 /* Nonzero if generating code to profile program flow graph arcs. */
389 int profile_arc_flag = 0;
391 /* Nonzero if generating info for gcov to calculate line test coverage. */
393 int flag_test_coverage = 0;
395 /* Nonzero indicates that branch taken probabilities should be calculated. */
397 int flag_branch_probabilities = 0;
399 /* Nonzero for -pedantic switch: warn about anything
400 that standard spec forbids. */
404 /* Temporarily suppress certain warnings.
405 This is set while reading code from a system header file. */
407 int in_system_header = 0;
409 /* Nonzero means do stupid register allocation.
410 Currently, this is 1 if `optimize' is 0. */
412 int obey_regdecls = 0;
414 /* Don't print functions as they are compiled and don't print
415 times taken by the various passes. -quiet. */
421 /* Nonzero means `char' should be signed. */
423 int flag_signed_char;
425 /* Nonzero means give an enum type only as many bytes as it needs. */
427 int flag_short_enums;
429 /* Nonzero for -fcaller-saves: allocate values in regs that need to
430 be saved across function calls, if that produces overall better code.
431 Optional now, so people can test it. */
433 #ifdef DEFAULT_CALLER_SAVES
434 int flag_caller_saves = 1;
436 int flag_caller_saves = 0;
439 /* Nonzero if structures and unions should be returned in memory.
441 This should only be defined if compatibility with another compiler or
442 with an ABI is needed, because it results in slower code. */
444 #ifndef DEFAULT_PCC_STRUCT_RETURN
445 #define DEFAULT_PCC_STRUCT_RETURN 1
448 /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
450 int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
452 /* Nonzero for -fforce-mem: load memory value into a register
453 before arithmetic on it. This makes better cse but slower compilation. */
455 int flag_force_mem = 0;
457 /* Nonzero for -fforce-addr: load memory address into a register before
458 reference to memory. This makes better cse but slower compilation. */
460 int flag_force_addr = 0;
462 /* Nonzero for -fdefer-pop: don't pop args after each function call;
463 instead save them up to pop many calls' args with one insns. */
465 int flag_defer_pop = 0;
467 /* Nonzero for -ffloat-store: don't allocate floats and doubles
468 in extended-precision registers. */
470 int flag_float_store = 0;
472 /* Nonzero for -fcse-follow-jumps:
473 have cse follow jumps to do a more extensive job. */
475 int flag_cse_follow_jumps;
477 /* Nonzero for -fcse-skip-blocks:
478 have cse follow a branch around a block. */
479 int flag_cse_skip_blocks;
481 /* Nonzero for -fexpensive-optimizations:
482 perform miscellaneous relatively-expensive optimizations. */
483 int flag_expensive_optimizations;
485 /* Nonzero for -fthread-jumps:
486 have jump optimize output of loop. */
488 int flag_thread_jumps;
490 /* Nonzero enables strength-reduction in loop.c. */
492 int flag_strength_reduce = 0;
494 /* Nonzero enables loop unrolling in unroll.c. Only loops for which the
495 number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
496 UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
499 int flag_unroll_loops;
501 /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
502 This is generally not a win. */
504 int flag_unroll_all_loops;
506 /* Nonzero forces all invariant computations in loops to be moved
509 int flag_move_all_movables = 0;
511 /* Nonzero forces all general induction variables in loops to be
514 int flag_reduce_all_givs = 0;
516 /* Nonzero to perform full register move optimization passes. This is the
519 int flag_regmove = 0;
521 /* Nonzero for -fwritable-strings:
522 store string constants in data segment and don't uniquize them. */
524 int flag_writable_strings = 0;
526 /* Nonzero means don't put addresses of constant functions in registers.
527 Used for compiling the Unix kernel, where strange substitutions are
528 done on the assembly output. */
530 int flag_no_function_cse = 0;
532 /* Nonzero for -fomit-frame-pointer:
533 don't make a frame pointer in simple functions that don't require one. */
535 int flag_omit_frame_pointer = 0;
537 /* Nonzero means place each function into its own section on those platforms
538 which support arbitrary section names and unlimited numbers of sections. */
540 int flag_function_sections = 0;
542 /* ... and similar for data. */
544 int flag_data_sections = 0;
546 /* Nonzero to inhibit use of define_optimization peephole opts. */
548 int flag_no_peephole = 0;
550 /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
551 operations in the interest of optimization. For example it allows
552 GCC to assume arguments to sqrt are nonnegative numbers, allowing
553 faster code for sqrt to be generated. */
555 int flag_fast_math = 0;
557 /* Nonzero means all references through pointers are volatile. */
561 /* Nonzero means treat all global and extern variables as volatile. */
563 int flag_volatile_global;
565 /* Nonzero means treat all static variables as volatile. */
567 int flag_volatile_static;
569 /* Nonzero means just do syntax checking; don't output anything. */
571 int flag_syntax_only = 0;
573 /* Nonzero means perform global cse. */
575 static int flag_gcse;
577 /* Nonzero means to rerun cse after loop optimization. This increases
578 compilation time about 20% and picks up a few more common expressions. */
580 static int flag_rerun_cse_after_loop;
582 /* Nonzero means to run loop optimizations twice. */
584 int flag_rerun_loop_opt;
586 /* Nonzero for -finline-functions: ok to inline functions that look like
587 good inline candidates. */
589 int flag_inline_functions;
591 /* Nonzero for -fkeep-inline-functions: even if we make a function
592 go inline everywhere, keep its definition around for debugging
595 int flag_keep_inline_functions;
597 /* Nonzero means that functions will not be inlined. */
601 /* Nonzero means that we should emit static const variables
602 regardless of whether or not optimization is turned on. */
604 int flag_keep_static_consts = 1;
606 /* Nonzero means we should be saving declaration info into a .X file. */
608 int flag_gen_aux_info = 0;
610 /* Specified name of aux-info file. */
612 static char *aux_info_file_name;
614 /* Nonzero means make the text shared if supported. */
616 int flag_shared_data;
618 /* Nonzero means schedule into delayed branch slots if supported. */
620 int flag_delayed_branch;
622 /* Nonzero if we are compiling pure (sharable) code.
623 Value is 1 if we are doing reasonable (i.e. simple
624 offset into offset table) pic. Value is 2 if we can
625 only perform register offsets. */
629 /* Nonzero means generate extra code for exception handling and enable
630 exception handling. */
634 /* Nonzero means use the new model for exception handling. Replaces
635 -DNEW_EH_MODEL as a compile option. */
637 int flag_new_exceptions = 0;
639 /* Nonzero means don't place uninitialized global data in common storage
644 /* Nonzero means pretend it is OK to examine bits of target floats,
645 even if that isn't true. The resulting code will have incorrect constants,
646 but the same series of instructions that the native compiler would make. */
648 int flag_pretend_float;
650 /* Nonzero means change certain warnings into errors.
651 Usually these are warnings about failure to conform to some standard. */
653 int flag_pedantic_errors = 0;
655 /* flag_schedule_insns means schedule insns within basic blocks (before
657 flag_schedule_insns_after_reload means schedule insns after
660 int flag_schedule_insns = 0;
661 int flag_schedule_insns_after_reload = 0;
664 /* The following flags have effect only for scheduling before register
667 flag_schedule_interblock means schedule insns accross basic blocks.
668 flag_schedule_speculative means allow speculative motion of non-load insns.
669 flag_schedule_speculative_load means allow speculative motion of some
671 flag_schedule_speculative_load_dangerous allows speculative motion of more
674 int flag_schedule_interblock = 1;
675 int flag_schedule_speculative = 1;
676 int flag_schedule_speculative_load = 0;
677 int flag_schedule_speculative_load_dangerous = 0;
680 /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
681 by a cheaper branch, on a count register. */
682 int flag_branch_on_count_reg;
684 /* -finhibit-size-directive inhibits output of .size for ELF.
685 This is used only for compiling crtstuff.c,
686 and it may be extended to other effects
687 needed for crtstuff.c on other systems. */
688 int flag_inhibit_size_directive = 0;
690 /* -fverbose-asm causes extra commentary information to be produced in
691 the generated assembly code (to make it more readable). This option
692 is generally only of use to those who actually need to read the
693 generated assembly code (perhaps while debugging the compiler itself).
694 -fno-verbose-asm, the default, causes the extra information
695 to be omitted and is useful when comparing two assembler files. */
697 int flag_verbose_asm = 0;
699 /* -dA causes debug commentary information to be produced in
700 the generated assembly code (to make it more readable). This option
701 is generally only of use to those who actually need to read the
702 generated assembly code (perhaps while debugging the compiler itself).
703 Currently, this switch is only used by dwarfout.c; however, it is intended
704 to be a catchall for printing debug information in the assembler file. */
706 int flag_debug_asm = 0;
708 /* -fgnu-linker specifies use of the GNU linker for initializations.
709 (Or, more generally, a linker that handles initializations.)
710 -fno-gnu-linker says that collect2 will be used. */
712 int flag_gnu_linker = 0;
714 int flag_gnu_linker = 1;
717 /* Tag all structures with __attribute__(packed) */
718 int flag_pack_struct = 0;
720 /* Emit code to check for stack overflow; also may cause large objects
721 to be allocated dynamically. */
722 int flag_stack_check;
724 /* -fcheck-memory-usage causes extra code to be generated in order to check
725 memory accesses. This is used by a detector of bad memory accesses such
727 int flag_check_memory_usage = 0;
729 /* -fprefix-function-name causes function name to be prefixed. This
730 can be used with -fcheck-memory-usage to isolate code compiled with
731 -fcheck-memory-usage. */
732 int flag_prefix_function_name = 0;
734 /* 0 if pointer arguments may alias each other. True in C.
735 1 if pointer arguments may not alias each other but may alias
737 2 if pointer arguments may not alias each other and may not
738 alias global variables. True in Fortran.
739 This defaults to 0 for C. */
740 int flag_argument_noalias = 0;
742 /* Nonzero if we should do (language-dependent) alias analysis.
743 Typically, this analysis will assume that expressions of certain
744 types do not alias expressions of certain other types. Only used
745 if alias analysis (in general) is enabled. */
746 int flag_strict_aliasing = 0;
748 /* Instrument functions with calls at entry and exit, for profiling. */
749 int flag_instrument_function_entry_exit = 0;
751 /* Nonzero means ignore `#ident' directives. 0 means handle them.
752 On SVR4 targets, it also controls whether or not to emit a
753 string identifying the compiler. */
755 int flag_no_ident = 0;
757 /* Table of supported debugging formats. */
761 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
762 constant expression, we use NO_DEBUG in its place. */
763 enum debug_info_type debug_type;
764 int use_extensions_p;
765 const char * description;
769 { "g", NO_DEBUG, DEFAULT_GDB_EXTENSIONS,
770 "Generate default debug format output" },
771 { "ggdb", NO_DEBUG, 1, "Generate default extended debug format output" },
772 #ifdef DBX_DEBUGGING_INFO
773 { "gstabs", DBX_DEBUG, 0, "Generate STABS format debug output" },
774 { "gstabs+", DBX_DEBUG, 1, "Generate extended STABS format debug output" },
776 #ifdef DWARF_DEBUGGING_INFO
777 { "gdwarf", DWARF_DEBUG, 0, "Generate DWARF-1 format debug output"},
778 { "gdwarf+", DWARF_DEBUG, 1,
779 "Generated extended DWARF-1 format debug output" },
781 #ifdef DWARF2_DEBUGGING_INFO
782 { "gdwarf-2", DWARF2_DEBUG, 0, "Enable DWARF-2 debug output" },
784 #ifdef XCOFF_DEBUGGING_INFO
785 { "gxcoff", XCOFF_DEBUG, 0, "Generate XCOFF format debug output" },
786 { "gxcoff+", XCOFF_DEBUG, 1, "Generate extended XCOFF format debug output" },
788 #ifdef SDB_DEBUGGING_INFO
789 { "gcoff", SDB_DEBUG, 0, "Generate COFF format debug output" },
799 const char * description;
801 lang_independent_options;
803 /* Add or remove a leading underscore from user symbols. */
804 int flag_leading_underscore = -1;
806 /* The user symbol prefix after having resolved same. */
807 const char *user_label_prefix;
809 /* A default for same. */
810 #ifndef USER_LABEL_PREFIX
811 #define USER_LABEL_PREFIX ""
814 /* Table of language-independent -f options.
815 STRING is the option name. VARIABLE is the address of the variable.
816 ON_VALUE is the value to store in VARIABLE
817 if `-fSTRING' is seen as an option.
818 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
820 lang_independent_options f_options[] =
822 {"float-store", &flag_float_store, 1,
823 "Do not store floats in registers" },
824 {"volatile", &flag_volatile, 1,
825 "Consider all mem refs through pointers as volatile"},
826 {"volatile-global", &flag_volatile_global, 1,
827 "Consider all mem refs to global data to be volatile" },
828 {"volatile-static", &flag_volatile_static, 1,
829 "Consider all mem refs to static data to be volatile" },
830 {"defer-pop", &flag_defer_pop, 1,
831 "Defer popping functions args from stack until later" },
832 {"omit-frame-pointer", &flag_omit_frame_pointer, 1,
833 "When possible do not generate stack frames"},
834 {"cse-follow-jumps", &flag_cse_follow_jumps, 1,
835 "When running CSE, follow jumps to their targets" },
836 {"cse-skip-blocks", &flag_cse_skip_blocks, 1,
837 "When running CSE, follow conditional jumps" },
838 {"expensive-optimizations", &flag_expensive_optimizations, 1,
839 "Perform a number of minor, expensive optimisations" },
840 {"thread-jumps", &flag_thread_jumps, 1,
841 "Perform jump threading optimisations"},
842 {"strength-reduce", &flag_strength_reduce, 1,
843 "Perform strength reduction optimisations" },
844 {"unroll-loops", &flag_unroll_loops, 1,
845 "Perform loop unrolling when iteration count is known" },
846 {"unroll-all-loops", &flag_unroll_all_loops, 1,
847 "Perform loop unrolling for all loops" },
848 {"move-all-movables", &flag_move_all_movables, 1,
849 "Force all loop invariant computations out of loops" },
850 {"reduce-all-givs", &flag_reduce_all_givs, 1,
851 "Strength reduce all loop general induction variables" },
852 {"writable-strings", &flag_writable_strings, 1,
853 "Store strings in writable data section" },
854 {"peephole", &flag_no_peephole, 0,
855 "Enable machine specific peephole optimisations" },
856 {"force-mem", &flag_force_mem, 1,
857 "Copy memory operands into registers before using" },
858 {"force-addr", &flag_force_addr, 1,
859 "Copy memory address constants into regs before using" },
860 {"function-cse", &flag_no_function_cse, 0,
861 "Allow function addresses to be held in registers" },
862 {"inline-functions", &flag_inline_functions, 1,
863 "Integrate simple functions into their callers" },
864 {"keep-inline-functions", &flag_keep_inline_functions, 1,
865 "Generate code for funcs even if they are fully inlined" },
866 {"inline", &flag_no_inline, 0,
867 "Pay attention to the 'inline' keyword"},
868 {"keep-static-consts", &flag_keep_static_consts, 1,
869 "Emit static const variables even if they are not used" },
870 {"syntax-only", &flag_syntax_only, 1,
871 "Check for syntax errors, then stop" },
872 {"shared-data", &flag_shared_data, 1,
873 "Mark data as shared rather than private" },
874 {"caller-saves", &flag_caller_saves, 1,
875 "Enable saving registers around function calls" },
876 {"pcc-struct-return", &flag_pcc_struct_return, 1,
877 "Return 'short' aggregates in memory, not registers" },
878 {"reg-struct-return", &flag_pcc_struct_return, 0,
879 "Return 'short' aggregates in registers" },
880 {"delayed-branch", &flag_delayed_branch, 1,
881 "Attempt to fill delay slots of branch instructions" },
882 {"gcse", &flag_gcse, 1,
883 "Perform the global common subexpression elimination" },
884 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1,
885 "Run CSE pass after loop optimisations"},
886 {"rerun-loop-opt", &flag_rerun_loop_opt, 1,
887 "Run the loop optimiser twice"},
888 {"pretend-float", &flag_pretend_float, 1,
889 "Pretend that host and target use the same FP format"},
890 {"schedule-insns", &flag_schedule_insns, 1,
891 "Reschedule instructions to avoid pipeline stalls"},
892 {"schedule-insns2", &flag_schedule_insns_after_reload, 1,
893 "Run two passes of the instruction scheduler"},
895 {"sched-interblock",&flag_schedule_interblock, 1,
896 "Enable scheduling across basic blocks" },
897 {"sched-spec",&flag_schedule_speculative, 1,
898 "Allow speculative motion of non-loads" },
899 {"sched-spec-load",&flag_schedule_speculative_load, 1,
900 "Allow speculative motion of some loads" },
901 {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1,
902 "Allow speculative motion of more loads" },
904 {"branch-count-reg",&flag_branch_on_count_reg, 1,
905 "Replace add,compare,branch with branch on count reg"},
906 {"pic", &flag_pic, 1,
907 "Generate position independent code, if possible"},
908 {"PIC", &flag_pic, 2, ""},
909 {"exceptions", &flag_exceptions, 1,
910 "Enable exception handling" },
911 {"new-exceptions", &flag_new_exceptions, 1,
912 "Use the new model for exception handling" },
913 {"sjlj-exceptions", &exceptions_via_longjmp, 1,
914 "Use setjmp/longjmp to handle exceptions" },
915 {"asynchronous-exceptions", &asynchronous_exceptions, 1,
916 "Support asynchronous exceptions" },
917 {"profile-arcs", &profile_arc_flag, 1,
918 "Insert arc based program profiling code" },
919 {"test-coverage", &flag_test_coverage, 1,
920 "Create data files needed by gcov" },
921 {"branch-probabilities", &flag_branch_probabilities, 1,
922 "Use profiling information for branch probabilities" },
923 {"fast-math", &flag_fast_math, 1,
924 "Improve FP speed by violating ANSI & IEEE rules" },
925 {"common", &flag_no_common, 0,
926 "Do not put unitialised globals in the common section" },
927 {"inhibit-size-directive", &flag_inhibit_size_directive, 1,
928 "Do not generate .size directives" },
929 {"function-sections", &flag_function_sections, 1,
930 "place each function into its own section" },
931 {"data-sections", &flag_data_sections, 1,
932 "place data items into their own section" },
933 {"verbose-asm", &flag_verbose_asm, 1,
934 "Add extra commentry to assembler output"},
935 {"gnu-linker", &flag_gnu_linker, 1,
936 "Output GNU ld formatted global initialisers"},
937 {"regmove", &flag_regmove, 1,
938 "Enables a register move optimisation"},
939 {"optimize-register-move", &flag_regmove, 1,
940 "Do the full regmove optimization pass"},
941 {"pack-struct", &flag_pack_struct, 1,
942 "Pack structure members together without holes" },
943 {"stack-check", &flag_stack_check, 1,
944 "Insert stack checking code into the program" },
945 {"argument-alias", &flag_argument_noalias, 0,
946 "Specify that arguments may alias each other & globals"},
947 {"argument-noalias", &flag_argument_noalias, 1,
948 "Assume arguments may alias globals but not each other"},
949 {"argument-noalias-global", &flag_argument_noalias, 2,
950 "Assume arguments do not alias each other or globals" },
951 {"strict-aliasing", &flag_strict_aliasing, 1,
952 "Assume strict aliasing rules apply" },
953 {"check-memory-usage", &flag_check_memory_usage, 1,
954 "Generate code to check every memory access" },
955 {"prefix-function-name", &flag_prefix_function_name, 1,
956 "Add a prefix to all function names" },
957 {"dump-unnumbered", &flag_dump_unnumbered, 1,
958 "Suppress output of instruction numbers and line number notes in debugging dumps"},
959 {"instrument-functions", &flag_instrument_function_entry_exit, 1,
960 "Instrument function entry/exit with profiling calls"},
961 {"leading-underscore", &flag_leading_underscore, 1,
962 "External symbols have a leading underscore" },
963 {"ident", &flag_no_ident, 0,
964 "Process #ident directives"}
967 #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0]))
969 /* Table of language-specific options. */
971 static struct lang_opt
974 const char * description;
976 documented_lang_options[] =
978 /* In order not to overload the --help output, the convention
979 used here is to only describe those options which are not
980 enabled by default. */
982 { "-ansi", "Compile just for ANSI C" },
983 { "-fallow-single-precision",
984 "Do not promote floats to double if using -traditional" },
985 { "-std= ", "Determine language standard"},
987 { "-fsigned-bitfields", "" },
988 { "-funsigned-bitfields","Make bitfields by unsigned by default" },
989 { "-fno-signed-bitfields", "" },
990 { "-fno-unsigned-bitfields","" },
991 { "-fsigned-char", "Make 'char' be signed by default"},
992 { "-funsigned-char", "Make 'char' be unsigned by default"},
993 { "-fno-signed-char", "" },
994 { "-fno-unsigned-char", "" },
996 { "-ftraditional", "" },
997 { "-traditional", "Attempt to support traditional K&R style C"},
998 { "-fnotraditional", "" },
999 { "-fno-traditional", "" },
1002 { "-fno-asm", "Do not recognise the 'asm' keyword" },
1003 { "-fbuiltin", "" },
1004 { "-fno-builtin", "Do not recognise any built in functions" },
1005 { "-fhosted", "Assume normal C execution environment" },
1006 { "-fno-hosted", "" },
1008 "Assume that standard libraries & main might not exist" },
1009 { "-fno-freestanding", "" },
1010 { "-fcond-mismatch", "Allow different types as args of ? operator"},
1011 { "-fno-cond-mismatch", "" },
1012 { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" },
1013 { "-fno-dollars-in-identifiers", "" },
1014 { "-fshort-double", "Use the same size for double as for float" },
1015 { "-fno-short-double", "" },
1016 { "-fshort-enums", "Use the smallest fitting integer to hold enums"},
1017 { "-fno-short-enums", "" },
1019 { "-Wall", "Enable most warning messages" },
1020 { "-Wbad-function-cast",
1021 "Warn about casting functions to incompatible types" },
1022 { "-Wno-bad-function-cast", "" },
1023 { "-Wmissing-noreturn",
1024 "Warn about functions which might be candidates for attribute noreturn" },
1025 { "-Wno-missing-noreturn", "" },
1026 { "-Wcast-qual", "Warn about casts which discard qualifiers"},
1027 { "-Wno-cast-qual", "" },
1028 { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"},
1029 { "-Wno-char-subscripts", "" },
1030 { "-Wcomment", "Warn if nested comments are detected" },
1031 { "-Wno-comment", "" },
1032 { "-Wcomments", "Warn if nested comments are detected" },
1033 { "-Wno-comments", "" },
1034 { "-Wconversion", "Warn about possibly confusing type conversions" },
1035 { "-Wno-conversion", "" },
1036 { "-Wformat", "Warn about printf format anomalies" },
1037 { "-Wno-format", "" },
1038 { "-Wimplicit-function-declaration",
1039 "Warn about implicit function declarations" },
1040 { "-Wno-implicit-function-declaration", "" },
1041 { "-Werror-implicit-function-declaration", "" },
1042 { "-Wimplicit-int", "Warn when a declaration does not specify a type" },
1043 { "-Wno-implicit-int", "" },
1044 { "-Wimplicit", "" },
1045 { "-Wno-implicit", "" },
1046 { "-Wimport", "Warn about the use of the #import directive" },
1047 { "-Wno-import", "" },
1048 { "-Wlong-long","" },
1049 { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" },
1050 { "-Wmain", "Warn about suspicious declarations of main" },
1051 { "-Wno-main", "" },
1052 { "-Wmissing-braces",
1053 "Warn about possibly missing braces around initialisers" },
1054 { "-Wno-missing-braces", "" },
1055 { "-Wmissing-declarations",
1056 "Warn about global funcs without previous declarations"},
1057 { "-Wno-missing-declarations", "" },
1058 { "-Wmissing-prototypes", "Warn about global funcs without prototypes" },
1059 { "-Wno-missing-prototypes", "" },
1060 { "-Wmultichar", "Warn about use of multicharacter literals"},
1061 { "-Wno-multichar", "" },
1062 { "-Wnested-externs", "Warn about externs not at file scope level" },
1063 { "-Wno-nested-externs", "" },
1064 { "-Wparentheses", "Warn about possible missing parentheses" },
1065 { "-Wno-parentheses", "" },
1066 { "-Wpointer-arith", "Warn about function pointer arithmetic" },
1067 { "-Wno-pointer-arith", "" },
1068 { "-Wredundant-decls",
1069 "Warn about multiple declarations of the same object" },
1070 { "-Wno-redundant-decls", "" },
1071 { "-Wsign-compare", "Warn about signed/unsigned comparisons" },
1072 { "-Wno-sign-compare", "" },
1073 { "-Wunknown-pragmas", "Warn about unrecognised pragmas" },
1074 { "-Wno-unknown-pragmas", "" },
1075 { "-Wstrict-prototypes", "Warn about non-prototyped function decls" },
1076 { "-Wno-strict-prototypes", "" },
1077 { "-Wtraditional", "Warn about constructs whose meaning change in ANSI C"},
1078 { "-Wno-traditional", "" },
1079 { "-Wtrigraphs", "Warn when trigraphs are encountered" },
1080 { "-Wno-trigraphs", "" },
1082 { "-Wno-undef", "" },
1083 { "-Wwrite-strings", "Mark strings as 'const char *'"},
1084 { "-Wno-write-strings", "" },
1086 /* These are for languages with USE_CPPLIB. */
1087 /* These options are already documented in cpplib.c */
1094 { "-idirafter", "" },
1099 { "-iwithprefix", "" },
1100 { "-iwithprefixbefore", "" },
1102 { "-lang-c89", "" },
1103 { "-lang-c++", "" },
1105 { "-nostdinc", "" },
1106 { "-nostdinc++", "" },
1107 { "-trigraphs", "" },
1110 #define DEFINE_LANG_NAME(NAME) { NULL, NAME },
1112 /* These are for obj c. */
1113 DEFINE_LANG_NAME ("Objective C")
1115 { "-lang-objc", "" },
1116 { "-gen-decls", "Dump decls to a .decl file" },
1117 { "-fgnu-runtime", "Generate code for GNU runtime environment" },
1118 { "-fno-gnu-runtime", "" },
1119 { "-fnext-runtime", "Generate code for NeXT runtime environment" },
1120 { "-fno-next-runtime", "" },
1121 { "-Wselector", "Warn if a selector has multiple methods" },
1122 { "-Wno-selector", "" },
1123 { "-Wprotocol", "" },
1124 { "-Wno-protocol", "Do not warn if inherited methods are unimplemented"},
1125 { "-print-objc-runtime-info",
1126 "Generate C header of platform specific features" },
1128 #include "options.h"
1132 /* Here is a table, controlled by the tm.h file, listing each -m switch
1133 and which bits in `target_switches' it should set or clear.
1134 If VALUE is positive, it is bits to set.
1135 If VALUE is negative, -VALUE is bits to clear.
1136 (The sign bit is not used so there is no confusion.) */
1142 const char * description;
1144 target_switches [] = TARGET_SWITCHES;
1146 /* This table is similar, but allows the switch to have a value. */
1148 #ifdef TARGET_OPTIONS
1151 const char * prefix;
1152 const char ** variable;
1153 const char * description;
1155 target_options [] = TARGET_OPTIONS;
1158 /* Options controlling warnings */
1160 /* Don't print warning messages. -w. */
1162 int inhibit_warnings = 0;
1164 /* Print various extra warnings. -W. */
1166 int extra_warnings = 0;
1168 /* Treat warnings as errors. -Werror. */
1170 int warnings_are_errors = 0;
1172 /* Nonzero to warn about unused local variables. */
1176 /* Nonzero to warn about variables used before they are initialized. */
1178 int warn_uninitialized;
1180 /* Nonzero means warn about all declarations which shadow others. */
1184 /* Warn if a switch on an enum fails to have a case for every enum value. */
1188 /* Nonzero means warn about function definitions that default the return type
1189 or that use a null return and have a return-type other than void. */
1191 int warn_return_type;
1193 /* Nonzero means warn about pointer casts that increase the required
1194 alignment of the target type (and might therefore lead to a crash
1195 due to a misaligned access). */
1197 int warn_cast_align;
1199 /* Nonzero means warn about any identifiers that match in the first N
1200 characters. The value N is in `id_clash_len'. */
1203 unsigned id_clash_len;
1205 /* Nonzero means warn about any objects definitions whose size is larger
1206 than N bytes. Also want about function definitions whose returned
1207 values are larger than N bytes. The value N is in `larger_than_size'. */
1209 int warn_larger_than;
1210 unsigned larger_than_size;
1212 /* Nonzero means warn if inline function is too large. */
1216 /* Warn if a function returns an aggregate,
1217 since there are often incompatible calling conventions for doing this. */
1219 int warn_aggregate_return;
1221 /* Likewise for -W. */
1223 lang_independent_options W_options[] =
1225 {"unused", &warn_unused, 1, "Warn when a variable is unused" },
1226 {"error", &warnings_are_errors, 1, ""},
1227 {"shadow", &warn_shadow, 1, "Warn when one local variable shadows another" },
1228 {"switch", &warn_switch, 1,
1229 "Warn about enumerated switches missing a specific case" },
1230 {"aggregate-return", &warn_aggregate_return, 1,
1231 "Warn about returning structures, unions or arrays" },
1232 {"cast-align", &warn_cast_align, 1,
1233 "Warn about pointer casts which increase alignment" },
1234 {"uninitialized", &warn_uninitialized, 1,
1235 "Warn about unitialized automatic variables"},
1236 {"inline", &warn_inline, 1,
1237 "Warn when an inlined function cannot be inlined"}
1240 /* Output files for assembler code (real compiler output)
1241 and debugging dumps. */
1244 FILE *aux_info_file;
1245 FILE *rtl_dump_file = NULL;
1247 /* Decode the string P as an integral parameter.
1248 If the string is indeed an integer return its numeric value else
1249 issue an Invalid Option error for the option PNAME and return DEFVAL.
1250 If PNAME is zero just return DEFVAL, do not call error. */
1253 read_integral_parameter (p, pname, defval)
1258 const char *endp = p;
1262 if (*endp >= '0' && *endp <= '9')
1271 error ("Invalid option `%s'", pname);
1279 /* Time accumulators, to count the total time spent in various passes. */
1283 int integration_time;
1289 int branch_prob_time;
1294 int local_alloc_time;
1295 int global_alloc_time;
1301 int shorten_branch_time;
1307 /* Return time used so far, in microseconds. */
1317 #else /* not BeOS */
1318 #if defined (_WIN32) && !defined (__CYGWIN__)
1322 return (clock() * 1000);
1323 #else /* not _WIN32 */
1329 tick = 1000000 / sysconf(_SC_CLK_TCK);
1331 return (tms.tms_utime + tms.tms_stime) * tick;
1337 # if HAVE_SYSCONF && defined _SC_CLK_TCK
1338 # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */
1341 # define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */
1343 # define TICKS_PER_SECOND HZ /* traditional UNIX */
1347 return (tms.tms_utime + tms.tms_stime) * (1000000 / TICKS_PER_SECOND);
1352 struct rusage rusage;
1353 getrusage (0, &rusage);
1354 return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
1355 + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
1362 int proc_system_time;
1363 int child_user_time;
1364 int child_system_time;
1366 times ((void *) &vms_times);
1367 return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
1371 #endif /* _SC_CLK_TCK */
1373 #endif /* __BEOS__ */
1376 #define TIMEVAR(VAR, BODY) \
1377 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
1380 print_time (str, total)
1385 "time in %s: %d.%06d\n",
1386 str, total / 1000000, total % 1000000);
1389 /* Count an error or warning. Return 1 if the message should be printed. */
1392 count_error (warningp)
1395 if (warningp && inhibit_warnings)
1398 if (warningp && !warnings_are_errors)
1402 static int warning_message = 0;
1404 if (warningp && !warning_message)
1406 notice ("%s: warnings being treated as errors\n", progname);
1407 warning_message = 1;
1415 /* Print a fatal error message. NAME is the text.
1416 Also include a system error message based on `errno'. */
1419 pfatal_with_name (name)
1422 fprintf (stderr, "%s: ", progname);
1424 exit (FATAL_EXIT_CODE);
1428 fatal_io_error (name)
1431 notice ("%s: %s: I/O error\n", progname, name);
1432 exit (FATAL_EXIT_CODE);
1435 /* Called to give a better error message for a bad insn rather than
1436 just calling abort(). */
1439 fatal_insn VPROTO((const char *msgid, rtx insn, ...))
1441 #ifndef ANSI_PROTOTYPES
1447 VA_START (ap, insn);
1449 #ifndef ANSI_PROTOTYPES
1450 msgid = va_arg (ap, const char *);
1451 insn = va_arg (ap, rtx);
1456 exit (FATAL_EXIT_CODE);
1459 /* Called to give a better error message when we don't have an insn to match
1460 what we are looking for or if the insn's constraints aren't satisfied,
1461 rather than just calling abort(). */
1464 fatal_insn_not_found (insn)
1467 if (INSN_CODE (insn) < 0)
1468 fatal_insn ("internal error--unrecognizable insn:", insn);
1470 fatal_insn ("internal error--insn does not satisfy its constraints:", insn);
1473 /* This is the default decl_printable_name function. */
1476 decl_name (decl, verbosity)
1478 int verbosity ATTRIBUTE_UNUSED;
1480 return IDENTIFIER_POINTER (DECL_NAME (decl));
1483 static int need_error_newline;
1485 /* Function of last error message;
1486 more generally, function such that if next error message is in it
1487 then we don't have to mention the function name. */
1488 static tree last_error_function = NULL;
1490 /* Used to detect when input_file_stack has changed since last described. */
1491 static int last_error_tick;
1493 /* Called when the start of a function definition is parsed,
1494 this function prints on stderr the name of the function. */
1497 announce_function (decl)
1502 if (rtl_dump_and_exit)
1503 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
1505 fprintf (stderr, " %s", (*decl_printable_name) (decl, 2));
1507 need_error_newline = 1;
1508 last_error_function = current_function_decl;
1512 /* The default function to print out name of current function that caused
1516 default_print_error_function (file)
1519 if (last_error_function != current_function_decl)
1522 fprintf (stderr, "%s: ", file);
1524 if (current_function_decl == NULL)
1525 notice ("At top level:\n");
1527 notice ((TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE
1528 ? "In method `%s':\n"
1529 : "In function `%s':\n"),
1530 (*decl_printable_name) (current_function_decl, 2));
1532 last_error_function = current_function_decl;
1536 /* Called by report_error_function to print out function name.
1537 * Default may be overridden by language front-ends. */
1539 void (*print_error_function) PROTO((const char *)) =
1540 default_print_error_function;
1542 /* Prints out, if necessary, the name of the current function
1543 that caused an error. Called from all error and warning functions. */
1546 report_error_function (file)
1549 struct file_stack *p;
1551 if (need_error_newline)
1553 fprintf (stderr, "\n");
1554 need_error_newline = 0;
1557 (*print_error_function) (file);
1559 if (input_file_stack && input_file_stack->next != 0
1560 && input_file_stack_tick != last_error_tick
1561 && file == input_filename)
1563 for (p = input_file_stack->next; p; p = p->next)
1564 notice ((p == input_file_stack->next
1565 ? "In file included from %s:%d"
1566 : ",\n from %s:%d"),
1568 fprintf (stderr, ":\n");
1569 last_error_tick = input_file_stack_tick;
1573 /* Print a message. */
1576 vnotice (file, msgid, ap)
1581 vfprintf (file, _(msgid), ap);
1585 notice VPROTO((const char *msgid, ...))
1587 #ifndef ANSI_PROTOTYPES
1592 VA_START (ap, msgid);
1594 #ifndef ANSI_PROTOTYPES
1595 msgid = va_arg (ap, char *);
1598 vnotice (stderr, msgid, ap);
1603 fnotice VPROTO((FILE *file, const char *msgid, ...))
1605 #ifndef ANSI_PROTOTYPES
1611 VA_START (ap, msgid);
1613 #ifndef ANSI_PROTOTYPES
1614 file = va_arg (ap, FILE *);
1615 msgid = va_arg (ap, const char *);
1618 vnotice (file, msgid, ap);
1622 /* Report FILE and LINE (or program name), and optionally just WARN. */
1625 report_file_and_line (file, line, warn)
1631 fprintf (stderr, "%s:%d: ", file, line);
1633 fprintf (stderr, "%s: ", progname);
1636 notice ("warning: ");
1639 /* Print a message. */
1642 vmessage (prefix, msgid, ap)
1648 fprintf (stderr, "%s: ", prefix);
1650 vfprintf (stderr, msgid, ap);
1653 /* Print a message relevant to line LINE of file FILE. */
1656 v_message_with_file_and_line (file, line, warn, msgid, ap)
1663 report_file_and_line (file, line, warn);
1664 vnotice (stderr, msgid, ap);
1665 fputc ('\n', stderr);
1668 /* Print a message relevant to the given DECL. */
1671 v_message_with_decl (decl, warn, msgid, ap)
1679 report_file_and_line (DECL_SOURCE_FILE (decl),
1680 DECL_SOURCE_LINE (decl), warn);
1682 /* Do magic to get around lack of varargs support for insertion
1683 of arguments into existing list. We know that the decl is first;
1684 we ass_u_me that it will be printed with "%s". */
1686 for (p = _(msgid); *p; ++p)
1690 if (*(p + 1) == '%')
1692 else if (*(p + 1) != 's')
1699 if (p > _(msgid)) /* Print the left-hand substring. */
1701 char fmt[sizeof "%.255s"];
1702 long width = p - _(msgid);
1704 if (width > 255L) width = 255L; /* arbitrary */
1705 sprintf (fmt, "%%.%lds", width);
1706 fprintf (stderr, fmt, _(msgid));
1709 if (*p == '%') /* Print the name. */
1711 const char *n = (DECL_NAME (decl)
1712 ? (*decl_printable_name) (decl, 2)
1718 if (ISALPHA (*(p - 1) & 0xFF))
1723 if (*p) /* Print the rest of the message. */
1724 vmessage ((char *)NULL, p, ap);
1726 fputc ('\n', stderr);
1729 /* Figure file and line of the given INSN. */
1732 file_and_line_for_asm (insn, pfile, pline)
1737 rtx body = PATTERN (insn);
1740 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1741 if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
1742 asmop = SET_SRC (body);
1743 else if (GET_CODE (body) == ASM_OPERANDS)
1745 else if (GET_CODE (body) == PARALLEL
1746 && GET_CODE (XVECEXP (body, 0, 0)) == SET)
1747 asmop = SET_SRC (XVECEXP (body, 0, 0));
1748 else if (GET_CODE (body) == PARALLEL
1749 && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
1750 asmop = XVECEXP (body, 0, 0);
1756 *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
1757 *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
1761 *pfile = input_filename;
1766 /* Report an error at line LINE of file FILE. */
1769 v_error_with_file_and_line (file, line, msgid, ap)
1776 report_error_function (file);
1777 v_message_with_file_and_line (file, line, 0, msgid, ap);
1781 error_with_file_and_line VPROTO((const char *file, int line,
1782 const char *msgid, ...))
1784 #ifndef ANSI_PROTOTYPES
1791 VA_START (ap, msgid);
1793 #ifndef ANSI_PROTOTYPES
1794 file = va_arg (ap, const char *);
1795 line = va_arg (ap, int);
1796 msgid = va_arg (ap, const char *);
1799 v_error_with_file_and_line (file, line, msgid, ap);
1803 /* Report an error at the declaration DECL.
1804 MSGID is a format string which uses %s to substitute the declaration
1805 name; subsequent substitutions are a la printf. */
1808 v_error_with_decl (decl, msgid, ap)
1814 report_error_function (DECL_SOURCE_FILE (decl));
1815 v_message_with_decl (decl, 0, msgid, ap);
1819 error_with_decl VPROTO((tree decl, const char *msgid, ...))
1821 #ifndef ANSI_PROTOTYPES
1827 VA_START (ap, msgid);
1829 #ifndef ANSI_PROTOTYPES
1830 decl = va_arg (ap, tree);
1831 msgid = va_arg (ap, const char *);
1834 v_error_with_decl (decl, msgid, ap);
1838 /* Report an error at the line number of the insn INSN.
1839 This is used only when INSN is an `asm' with operands,
1840 and each ASM_OPERANDS records its own source file and line. */
1843 v_error_for_asm (insn, msgid, ap)
1852 file_and_line_for_asm (insn, &file, &line);
1853 report_error_function (file);
1854 v_message_with_file_and_line (file, line, 0, msgid, ap);
1858 error_for_asm VPROTO((rtx insn, const char *msgid, ...))
1860 #ifndef ANSI_PROTOTYPES
1866 VA_START (ap, msgid);
1868 #ifndef ANSI_PROTOTYPES
1869 insn = va_arg (ap, rtx);
1870 msgid = va_arg (ap, const char *);
1873 v_error_for_asm (insn, msgid, ap);
1877 /* Report an error at the current line number. */
1884 v_error_with_file_and_line (input_filename, lineno, msgid, ap);
1888 error VPROTO((const char *msgid, ...))
1890 #ifndef ANSI_PROTOTYPES
1895 VA_START (ap, msgid);
1897 #ifndef ANSI_PROTOTYPES
1898 msgid = va_arg (ap, const char *);
1905 /* Report a fatal error at the current line number. */
1913 exit (FATAL_EXIT_CODE);
1917 fatal VPROTO((const char *msgid, ...))
1919 #ifndef ANSI_PROTOTYPES
1924 VA_START (ap, msgid);
1926 #ifndef ANSI_PROTOTYPES
1927 msgid = va_arg (ap, const char *);
1934 /* Report a warning at line LINE of file FILE. */
1937 v_warning_with_file_and_line (file, line, msgid, ap)
1943 if (count_error (1))
1945 report_error_function (file);
1946 v_message_with_file_and_line (file, line, 1, msgid, ap);
1951 warning_with_file_and_line VPROTO((const char *file, int line,
1952 const char *msgid, ...))
1954 #ifndef ANSI_PROTOTYPES
1961 VA_START (ap, msgid);
1963 #ifndef ANSI_PROTOTYPES
1964 file = va_arg (ap, const char *);
1965 line = va_arg (ap, int);
1966 msgid = va_arg (ap, const char *);
1969 v_warning_with_file_and_line (file, line, msgid, ap);
1973 /* Report a warning at the declaration DECL.
1974 MSGID is a format string which uses %s to substitute the declaration
1975 name; subsequent substitutions are a la printf. */
1978 v_warning_with_decl (decl, msgid, ap)
1983 if (count_error (1))
1985 report_error_function (DECL_SOURCE_FILE (decl));
1986 v_message_with_decl (decl, 1, msgid, ap);
1991 warning_with_decl VPROTO((tree decl, const char *msgid, ...))
1993 #ifndef ANSI_PROTOTYPES
1999 VA_START (ap, msgid);
2001 #ifndef ANSI_PROTOTYPES
2002 decl = va_arg (ap, tree);
2003 msgid = va_arg (ap, const char *);
2006 v_warning_with_decl (decl, msgid, ap);
2010 /* Report a warning at the line number of the insn INSN.
2011 This is used only when INSN is an `asm' with operands,
2012 and each ASM_OPERANDS records its own source file and line. */
2015 v_warning_for_asm (insn, msgid, ap)
2020 if (count_error (1))
2025 file_and_line_for_asm (insn, &file, &line);
2026 report_error_function (file);
2027 v_message_with_file_and_line (file, line, 1, msgid, ap);
2032 warning_for_asm VPROTO((rtx insn, const char *msgid, ...))
2034 #ifndef ANSI_PROTOTYPES
2040 VA_START (ap, msgid);
2042 #ifndef ANSI_PROTOTYPES
2043 insn = va_arg (ap, rtx);
2044 msgid = va_arg (ap, const char *);
2047 v_warning_for_asm (insn, msgid, ap);
2051 /* Report a warning at the current line number. */
2054 vwarning (msgid, ap)
2058 v_warning_with_file_and_line (input_filename, lineno, msgid, ap);
2062 warning VPROTO((const char *msgid, ...))
2064 #ifndef ANSI_PROTOTYPES
2069 VA_START (ap, msgid);
2071 #ifndef ANSI_PROTOTYPES
2072 msgid = va_arg (ap, const char *);
2075 vwarning (msgid, ap);
2079 /* These functions issue either warnings or errors depending on
2080 -pedantic-errors. */
2083 vpedwarn (msgid, ap)
2087 if (flag_pedantic_errors)
2090 vwarning (msgid, ap);
2094 pedwarn VPROTO((const char *msgid, ...))
2096 #ifndef ANSI_PROTOTYPES
2101 VA_START (ap, msgid);
2103 #ifndef ANSI_PROTOTYPES
2104 msgid = va_arg (ap, const char *);
2107 vpedwarn (msgid, ap);
2112 v_pedwarn_with_decl (decl, msgid, ap)
2117 /* We don't want -pedantic-errors to cause the compilation to fail from
2118 "errors" in system header files. Sometimes fixincludes can't fix what's
2119 broken (eg: unsigned char bitfields - fixing it may change the alignment
2120 which will cause programs to mysteriously fail because the C library
2121 or kernel uses the original layout). There's no point in issuing a
2122 warning either, it's just unnecessary noise. */
2124 if (! DECL_IN_SYSTEM_HEADER (decl))
2126 if (flag_pedantic_errors)
2127 v_error_with_decl (decl, msgid, ap);
2129 v_warning_with_decl (decl, msgid, ap);
2134 pedwarn_with_decl VPROTO((tree decl, const char *msgid, ...))
2136 #ifndef ANSI_PROTOTYPES
2142 VA_START (ap, msgid);
2144 #ifndef ANSI_PROTOTYPES
2145 decl = va_arg (ap, tree);
2146 msgid = va_arg (ap, const char *);
2149 v_pedwarn_with_decl (decl, msgid, ap);
2154 v_pedwarn_with_file_and_line (file, line, msgid, ap)
2160 if (flag_pedantic_errors)
2161 v_error_with_file_and_line (file, line, msgid, ap);
2163 v_warning_with_file_and_line (file, line, msgid, ap);
2167 pedwarn_with_file_and_line VPROTO((const char *file, int line,
2168 const char *msgid, ...))
2170 #ifndef ANSI_PROTOTYPES
2177 VA_START (ap, msgid);
2179 #ifndef ANSI_PROTOTYPES
2180 file = va_arg (ap, const char *);
2181 line = va_arg (ap, int);
2182 msgid = va_arg (ap, const char *);
2185 v_pedwarn_with_file_and_line (file, line, msgid, ap);
2189 /* Apologize for not implementing some feature. */
2198 fprintf (stderr, "%s:%d: ", input_filename, lineno);
2200 fprintf (stderr, "%s: ", progname);
2201 notice ("sorry, not implemented: ");
2202 vnotice (stderr, msgid, ap);
2203 fputc ('\n', stderr);
2207 sorry VPROTO((const char *msgid, ...))
2209 #ifndef ANSI_PROTOTYPES
2214 VA_START (ap, msgid);
2216 #ifndef ANSI_PROTOTYPES
2217 msgid = va_arg (ap, const char *);
2224 /* More 'friendly' abort that prints the line and file.
2225 config.h can #define abort fancy_abort if you like that sort of thing.
2227 I don't think this is actually a good idea.
2228 Other sorts of crashes will look a certain way.
2229 It is a good thing if crashes from calling abort look the same way.
2235 fatal ("internal gcc abort");
2238 /* This calls abort and is used to avoid problems when abort if a macro.
2239 It is used when we need to pass the address of abort. */
2247 /* When `malloc.c' is compiled with `rcheck' defined,
2248 it calls this function to report clobberage. */
2252 const char * s ATTRIBUTE_UNUSED;
2257 /* Same as `malloc' but report error if no memory available. */
2268 value = (PTR) malloc (size);
2270 fatal ("virtual memory exhausted");
2274 /* Same as `calloc' but report error if no memory available. */
2277 xcalloc (size1, size2)
2278 size_t size1, size2;
2282 if (size1 == 0 || size2 == 0)
2285 value = (PTR) calloc (size1, size2);
2287 fatal ("virtual memory exhausted");
2292 /* Same as `realloc' but report error if no memory available.
2293 Also handle null PTR even if the vendor realloc gets it wrong. */
2296 xrealloc (ptr, size)
2300 register PTR result;
2305 result = (ptr ? (PTR) realloc (ptr, size) : (PTR) malloc (size));
2308 fatal ("virtual memory exhausted");
2313 /* Same as `strdup' but report error if no memory available. */
2317 register const char *s;
2319 register char *result = (char *) malloc (strlen (s) + 1);
2322 fatal ("virtual memory exhausted");
2327 /* Return the logarithm of X, base 2, considering X unsigned,
2328 if X is a power of 2. Otherwise, returns -1.
2330 This should be used via the `exact_log2' macro. */
2334 register unsigned HOST_WIDE_INT x;
2336 register int log = 0;
2337 /* Test for 0 or a power of 2. */
2338 if (x == 0 || x != (x & -x))
2340 while ((x >>= 1) != 0)
2345 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
2346 If X is 0, return -1.
2348 This should be used via the floor_log2 macro. */
2352 register unsigned HOST_WIDE_INT x;
2354 register int log = -1;
2361 static int float_handler_set;
2363 jmp_buf float_handler;
2365 /* Signals actually come here. */
2368 float_signal (signo)
2369 /* If this is missing, some compilers complain. */
2370 int signo ATTRIBUTE_UNUSED;
2372 if (float_handled == 0)
2374 #if defined (USG) || defined (hpux)
2375 signal (SIGFPE, float_signal); /* re-enable the signal catcher */
2378 signal (SIGFPE, float_signal);
2379 longjmp (float_handler, 1);
2382 /* Specify where to longjmp to when a floating arithmetic error happens.
2383 If HANDLER is 0, it means don't handle the errors any more. */
2386 set_float_handler (handler)
2389 float_handled = (handler != 0);
2391 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
2393 if (float_handled && ! float_handler_set)
2395 signal (SIGFPE, float_signal);
2396 float_handler_set = 1;
2400 /* This is a wrapper function for code which might elicit an
2401 arithmetic exception. That code should be passed in as a function
2402 pointer FN, and one argument DATA. DATA is usually a struct which
2403 contains the real input and output for function FN. This function
2404 returns 0 (failure) if longjmp was called (i.e. an exception
2405 occured.) It returns 1 (success) otherwise. */
2408 do_float_handler (fn, data)
2409 void (*fn) PROTO ((PTR));
2416 /* We got here via longjmp() caused by an exception in function fn() */
2417 set_float_handler (NULL);
2421 set_float_handler (buf);
2423 set_float_handler (NULL);
2427 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
2428 error happens, pushing the previous specification into OLD_HANDLER.
2429 Return an indication of whether there was a previous handler in effect. */
2432 push_float_handler (handler, old_handler)
2433 jmp_buf handler, old_handler;
2435 int was_handled = float_handled;
2439 memcpy ((char *) old_handler, (char *) float_handler,
2440 sizeof (float_handler));
2442 memcpy ((char *) float_handler, (char *) handler, sizeof (float_handler));
2446 /* Restore the previous specification of whether and where to longjmp to
2447 when a floating arithmetic error happens. */
2450 pop_float_handler (handled, handler)
2454 float_handled = handled;
2456 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
2459 /* Handler for SIGPIPE. */
2463 /* If this is missing, some compilers complain. */
2464 int signo ATTRIBUTE_UNUSED;
2466 fatal ("output pipe has been closed");
2469 /* Strip off a legitimate source ending from the input string NAME of
2470 length LEN. Rather than having to know the names used by all of
2471 our front ends, we strip off an ending of a period followed by
2472 up to five characters. (Java uses ".class".) */
2475 strip_off_ending (name, len)
2480 for (i = 2; i < 6 && len > i; i++)
2482 if (name[len - i] == '.')
2484 name[len - i] = '\0';
2490 /* Output a quoted string. */
2493 output_quoted_string (asm_file, string)
2497 #ifdef OUTPUT_QUOTED_STRING
2498 OUTPUT_QUOTED_STRING (asm_file, string);
2502 putc ('\"', asm_file);
2503 while ((c = *string++) != 0)
2505 if (c == '\"' || c == '\\')
2506 putc ('\\', asm_file);
2509 putc ('\"', asm_file);
2513 /* Output a file name in the form wanted by System V. */
2516 output_file_directive (asm_file, input_name)
2518 const char *input_name;
2520 int len = strlen (input_name);
2521 const char *na = input_name + len;
2523 /* NA gets INPUT_NAME sans directory names. */
2524 while (na > input_name)
2528 #ifdef DIR_SEPARATOR
2529 if (na[-1] == DIR_SEPARATOR)
2535 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2536 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
2538 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2539 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
2541 fprintf (asm_file, "\t.file\t");
2542 output_quoted_string (asm_file, na);
2543 fputc ('\n', asm_file);
2548 #ifdef ASM_IDENTIFY_LANGUAGE
2549 /* Routine to build language identifier for object file. */
2551 output_lang_identify (asm_out_file)
2554 int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2555 char *s = (char *) alloca (len);
2556 sprintf (s, "__gnu_compiled_%s", lang_identify ());
2557 ASM_OUTPUT_LABEL (asm_out_file, s);
2561 /* Routine to open a dump file. */
2563 open_dump_file (suffix, function_name)
2565 const char *function_name;
2572 dumpname = (char *) xmalloc (strlen (dump_base_name) + strlen (suffix) + 1);
2574 if (rtl_dump_file != NULL)
2575 fclose (rtl_dump_file);
2577 strcpy (dumpname, dump_base_name);
2578 strcat (dumpname, suffix);
2580 rtl_dump_file = fopen (dumpname, "a");
2582 if (rtl_dump_file == NULL)
2583 pfatal_with_name (dumpname);
2588 fprintf (rtl_dump_file, "\n;; Function %s\n\n", function_name);
2594 /* Routine to close a dump file. */
2596 close_dump_file (func, insns)
2597 void (*func) PROTO ((FILE *, rtx));
2604 func (rtl_dump_file, insns);
2606 fflush (rtl_dump_file);
2607 fclose (rtl_dump_file);
2609 rtl_dump_file = NULL;
2615 /* Routine to dump rtl into a file. */
2617 dump_rtl (suffix, decl, func, insns)
2620 void (*func) PROTO ((FILE *, rtx));
2623 open_dump_file (suffix, decl_printable_name (decl, 2));
2624 close_dump_file (func, insns);
2627 /* Routine to empty a dump file. */
2629 clean_dump_file (suffix)
2634 dumpname = (char *) xmalloc (strlen (dump_base_name) + strlen (suffix) + 1);
2636 strcpy (dumpname, dump_base_name);
2637 strcat (dumpname, suffix);
2639 rtl_dump_file = fopen (dumpname, "w");
2641 if (rtl_dump_file == NULL)
2642 pfatal_with_name (dumpname);
2646 fclose (rtl_dump_file);
2647 rtl_dump_file = NULL;
2653 /* Compile an entire file of output from cpp, named NAME.
2654 Write a file of assembly output and various debugging dumps. */
2663 int name_specified = name != 0;
2665 if (dump_base_name == 0)
2666 dump_base_name = name ? name : "gccdump";
2670 integration_time = 0;
2676 branch_prob_time = 0;
2681 local_alloc_time = 0;
2682 global_alloc_time = 0;
2688 shorten_branch_time = 0;
2694 /* Initialize data in various passes. */
2698 name = init_parse (name);
2700 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
2701 || debug_info_level == DINFO_LEVEL_VERBOSE
2702 || flag_test_coverage);
2704 init_decl_processing ();
2713 if (flag_caller_saves)
2714 init_caller_save ();
2716 /* If auxiliary info generation is desired, open the output file.
2717 This goes in the same directory as the source file--unlike
2718 all the other output files. */
2719 if (flag_gen_aux_info)
2721 aux_info_file = fopen (aux_info_file_name, "w");
2722 if (aux_info_file == 0)
2723 pfatal_with_name (aux_info_file_name);
2726 /* Clear the dump files. */
2728 clean_dump_file (".rtl");
2731 clean_dump_file (".jump");
2732 if (graph_dump_format != no_graph)
2733 clean_graph_dump_file (dump_base_name, ".jump");
2737 clean_dump_file (".addressof");
2738 if (graph_dump_format != no_graph)
2739 clean_graph_dump_file (dump_base_name, ".addressof");
2743 clean_dump_file (".cse");
2744 if (graph_dump_format != no_graph)
2745 clean_graph_dump_file (dump_base_name, ".cse");
2749 clean_dump_file (".loop");
2750 if (graph_dump_format != no_graph)
2751 clean_graph_dump_file (dump_base_name, ".loop");
2755 clean_dump_file (".cse2");
2756 if (graph_dump_format != no_graph)
2757 clean_graph_dump_file (dump_base_name, ".cse2");
2759 if (branch_prob_dump)
2761 clean_dump_file (".bp");
2762 if (graph_dump_format != no_graph)
2763 clean_graph_dump_file (dump_base_name, ".bp");
2767 clean_dump_file (".flow");
2768 if (graph_dump_format != no_graph)
2769 clean_graph_dump_file (dump_base_name, ".flow");
2773 clean_dump_file (".combine");
2774 if (graph_dump_format != no_graph)
2775 clean_graph_dump_file (dump_base_name, ".combine");
2779 clean_dump_file (".regmove");
2780 if (graph_dump_format != no_graph)
2781 clean_graph_dump_file (dump_base_name, ".regmove");
2785 clean_dump_file (".sched");
2786 if (graph_dump_format != no_graph)
2787 clean_graph_dump_file (dump_base_name, ".sched");
2791 clean_dump_file (".lreg");
2792 if (graph_dump_format != no_graph)
2793 clean_graph_dump_file (dump_base_name, ".lreg");
2795 if (global_reg_dump)
2797 clean_dump_file (".greg");
2798 if (graph_dump_format != no_graph)
2799 clean_graph_dump_file (dump_base_name, ".greg");
2803 clean_dump_file (".flow2");
2804 if (graph_dump_format != no_graph)
2805 clean_graph_dump_file (dump_base_name, ".flow2");
2809 clean_dump_file (".sched2");
2810 if (graph_dump_format != no_graph)
2811 clean_graph_dump_file (dump_base_name, ".sched2");
2815 clean_dump_file (".jump2");
2816 if (graph_dump_format != no_graph)
2817 clean_graph_dump_file (dump_base_name, ".jump2");
2822 clean_dump_file (".dbr");
2823 if (graph_dump_format != no_graph)
2824 clean_graph_dump_file (dump_base_name, ".dbr");
2829 clean_dump_file (".gcse");
2830 if (graph_dump_format != no_graph)
2831 clean_graph_dump_file (dump_base_name, ".gcse");
2836 clean_dump_file (".stack");
2837 if (graph_dump_format != no_graph)
2838 clean_graph_dump_file (dump_base_name, ".stack");
2841 #ifdef MACHINE_DEPENDENT_REORG
2842 if (mach_dep_reorg_dump)
2844 clean_dump_file (".mach");
2845 if (graph_dump_format != no_graph)
2846 clean_graph_dump_file (dump_base_name, ".mach");
2850 /* Open assembler code output file. */
2852 if (flag_syntax_only)
2853 asm_out_file = NULL;
2856 if (! name_specified && asm_file_name == 0)
2857 asm_out_file = stdout;
2860 int len = strlen (dump_base_name);
2861 register char *dumpname = (char *) xmalloc (len + 6);
2862 strcpy (dumpname, dump_base_name);
2863 strip_off_ending (dumpname, len);
2864 strcat (dumpname, ".s");
2865 if (asm_file_name == 0)
2867 asm_file_name = (char *) xmalloc (strlen (dumpname) + 1);
2868 strcpy (asm_file_name, dumpname);
2870 if (!strcmp (asm_file_name, "-"))
2871 asm_out_file = stdout;
2873 asm_out_file = fopen (asm_file_name, "w");
2874 if (asm_out_file == 0)
2875 pfatal_with_name (asm_file_name);
2878 #ifdef IO_BUFFER_SIZE
2879 setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
2880 _IOFBF, IO_BUFFER_SIZE);
2884 input_filename = name;
2886 /* Put an entry on the input file stack for the main input file. */
2888 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
2889 input_file_stack->next = 0;
2890 input_file_stack->name = input_filename;
2892 /* Perform language-specific initialization.
2893 This may set main_input_filename. */
2896 /* If the input doesn't start with a #line, use the input name
2897 as the official input file name. */
2898 if (main_input_filename == 0)
2899 main_input_filename = name;
2901 if (flag_syntax_only)
2903 write_symbols = NO_DEBUG;
2905 profile_block_flag = 0;
2909 ASM_FILE_START (asm_out_file);
2911 #ifdef ASM_COMMENT_START
2912 if (flag_verbose_asm)
2914 /* Print the list of options in effect. */
2915 print_version (asm_out_file, ASM_COMMENT_START);
2916 print_switch_values (asm_out_file, 0, MAX_LINE,
2917 ASM_COMMENT_START, " ", "\n");
2918 /* Add a blank line here so it appears in assembler output but not
2920 fprintf (asm_out_file, "\n");
2924 /* Output something to inform GDB that this compilation was by GCC. */
2925 #ifndef ASM_IDENTIFY_GCC
2926 fprintf (asm_out_file, "gcc2_compiled.:\n");
2928 ASM_IDENTIFY_GCC (asm_out_file);
2931 /* Output something to identify which front-end produced this file. */
2932 #ifdef ASM_IDENTIFY_LANGUAGE
2933 ASM_IDENTIFY_LANGUAGE (asm_out_file);
2935 } /* ! flag_syntax_only */
2937 #ifndef ASM_OUTPUT_SECTION_NAME
2938 if (flag_function_sections)
2940 warning ("-ffunction-sections not supported for this target.");
2941 flag_function_sections = 0;
2943 if (flag_data_sections)
2945 warning ("-fdata-sections not supported for this target.");
2946 flag_data_sections = 0;
2950 if (flag_function_sections
2951 && (profile_flag || profile_block_flag))
2953 warning ("-ffunction-sections disabled; it makes profiling impossible.");
2954 flag_function_sections = 0;
2957 #ifndef OBJECT_FORMAT_ELF
2958 if (flag_function_sections && write_symbols != NO_DEBUG)
2959 warning ("-ffunction-sections may affect debugging on some targets.");
2962 /* ??? Note: There used to be a conditional here
2963 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
2964 This was to guarantee separation between gcc_compiled. and
2965 the first function, for the sake of dbx on Suns.
2966 However, having the extra zero here confused the Emacs
2967 code for unexec, and might confuse other programs too.
2968 Therefore, I took out that change.
2969 In future versions we should find another way to solve
2970 that dbx problem. -- rms, 23 May 93. */
2972 /* Don't let the first function fall at the same address
2973 as gcc_compiled., if profiling. */
2974 if (profile_flag || profile_block_flag)
2976 /* It's best if we can write a nop here since some
2977 assemblers don't tolerate zeros in the text section. */
2978 if (insn_template[CODE_FOR_nop] != 0)
2979 output_asm_insn (insn_template[CODE_FOR_nop], NULL_PTR);
2981 assemble_zeros (UNITS_PER_WORD);
2984 /* If dbx symbol table desired, initialize writing it
2985 and output the predefined types. */
2986 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
2987 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
2988 TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
2991 #ifdef SDB_DEBUGGING_INFO
2992 if (write_symbols == SDB_DEBUG)
2993 TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
2996 #ifdef DWARF_DEBUGGING_INFO
2997 if (write_symbols == DWARF_DEBUG)
2998 TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
3000 #ifdef DWARF2_UNWIND_INFO
3001 if (dwarf2out_do_frame ())
3002 dwarf2out_frame_init ();
3004 #ifdef DWARF2_DEBUGGING_INFO
3005 if (write_symbols == DWARF2_DEBUG)
3006 TIMEVAR (symout_time, dwarf2out_init (asm_out_file, main_input_filename));
3009 /* Initialize yet another pass. */
3011 init_final (main_input_filename);
3012 init_branch_prob (dump_base_name);
3014 start_time = get_run_time ();
3016 /* Call the parser, which parses the entire file
3017 (calling rest_of_compilation for each function). */
3019 if (yyparse () != 0)
3021 if (errorcount == 0)
3022 notice ("Errors detected in input file (your bison.simple is out of date)\n");
3024 /* In case there were missing closebraces,
3025 get us back to the global binding level. */
3026 while (! global_bindings_p ())
3030 /* Compilation is now finished except for writing
3031 what's left of the symbol table output. */
3033 parse_time += get_run_time () - start_time;
3035 parse_time -= integration_time;
3036 parse_time -= varconst_time;
3038 if (flag_syntax_only)
3041 globals = getdecls ();
3043 /* Really define vars that have had only a tentative definition.
3044 Really output inline functions that must actually be callable
3045 and have not been output so far. */
3048 int len = list_length (globals);
3049 tree *vec = (tree *) alloca (sizeof (tree) * len);
3054 /* Process the decls in reverse order--earliest first.
3055 Put them into VEC from back to front, then take out from front. */
3057 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
3058 vec[len - i - 1] = decl;
3060 for (i = 0; i < len; i++)
3064 /* We're not deferring this any longer. */
3065 DECL_DEFER_OUTPUT (decl) = 0;
3067 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
3068 && incomplete_decl_finalize_hook != 0)
3069 (*incomplete_decl_finalize_hook) (decl);
3072 /* Now emit any global variables or functions that we have been putting
3073 off. We need to loop in case one of the things emitted here
3074 references another one which comes earlier in the list. */
3078 for (i = 0; i < len; i++)
3082 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
3085 /* Don't write out static consts, unless we still need them.
3087 We also keep static consts if not optimizing (for debugging),
3088 unless the user specified -fno-keep-static-consts.
3089 ??? They might be better written into the debug information.
3090 This is possible when using DWARF.
3092 A language processor that wants static constants to be always
3093 written out (even if it is not used) is responsible for
3094 calling rest_of_decl_compilation itself. E.g. the C front-end
3095 calls rest_of_decl_compilation from finish_decl.
3096 One motivation for this is that is conventional in some
3097 environments to write things like:
3098 static const char rcsid[] = "... version string ...";
3099 intending to force the string to be in the executable.
3101 A language processor that would prefer to have unneeded
3102 static constants "optimized away" would just defer writing
3103 them out until here. E.g. C++ does this, because static
3104 constants are often defined in header files.
3106 ??? A tempting alternative (for both C and C++) would be
3107 to force a constant to be written if and only if it is
3108 defined in a main file, as opposed to an include file. */
3110 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
3111 && (! TREE_READONLY (decl)
3112 || TREE_PUBLIC (decl)
3113 || (!optimize && flag_keep_static_consts)
3114 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
3117 rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
3120 if (TREE_CODE (decl) == FUNCTION_DECL
3121 && DECL_INITIAL (decl) != 0
3122 && DECL_SAVED_INSNS (decl) != 0
3123 && (flag_keep_inline_functions
3124 || TREE_PUBLIC (decl)
3125 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
3128 temporary_allocation ();
3129 output_inline_function (decl);
3130 permanent_allocation (1);
3135 /* This must occur after the loop to output deferred functions. Else
3136 the profiler initializer would not be emitted if all the functions
3137 in this compilation unit were deferred.
3139 output_func_start_profiler can not cause any additional functions or
3140 data to need to be output, so it need not be in the deferred function
3142 output_func_start_profiler ();
3144 /* Now that all possible functions have been output, we can dump
3145 the exception table. */
3147 output_exception_table ();
3149 for (i = 0; i < len; i++)
3153 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
3154 && ! TREE_ASM_WRITTEN (decl))
3155 /* Cancel the RTL for this decl so that, if debugging info
3156 output for global variables is still to come,
3157 this one will be omitted. */
3158 DECL_RTL (decl) = NULL;
3160 /* Warn about any function
3161 declared static but not defined.
3162 We don't warn about variables,
3163 because many programs have static variables
3164 that exist only to get some text into the object file. */
3165 if (TREE_CODE (decl) == FUNCTION_DECL
3167 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
3168 && DECL_INITIAL (decl) == 0
3169 && DECL_EXTERNAL (decl)
3170 && ! DECL_ARTIFICIAL (decl)
3171 && ! TREE_PUBLIC (decl))
3173 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
3174 pedwarn_with_decl (decl,
3175 "`%s' used but never defined");
3177 warning_with_decl (decl,
3178 "`%s' declared `static' but never defined");
3179 /* This symbol is effectively an "extern" declaration now. */
3180 TREE_PUBLIC (decl) = 1;
3181 assemble_external (decl);
3184 /* Warn about static fns or vars defined but not used,
3185 but not about inline functions or static consts
3186 since defining those in header files is normal practice. */
3188 && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
3189 || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
3190 && ! DECL_IN_SYSTEM_HEADER (decl)
3191 && ! DECL_EXTERNAL (decl)
3192 && ! TREE_PUBLIC (decl)
3193 && ! TREE_USED (decl)
3194 && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
3195 /* The TREE_USED bit for file-scope decls
3196 is kept in the identifier, to handle multiple
3197 external decls in different scopes. */
3198 && ! TREE_USED (DECL_NAME (decl)))
3199 warning_with_decl (decl, "`%s' defined but not used");
3201 #ifdef SDB_DEBUGGING_INFO
3202 /* The COFF linker can move initialized global vars to the end.
3203 And that can screw up the symbol ordering.
3204 By putting the symbols in that order to begin with,
3205 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
3206 if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
3207 && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
3208 && ! DECL_EXTERNAL (decl)
3209 && DECL_RTL (decl) != 0)
3210 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
3212 /* Output COFF information for non-global
3213 file-scope initialized variables. */
3214 if (write_symbols == SDB_DEBUG
3215 && TREE_CODE (decl) == VAR_DECL
3216 && DECL_INITIAL (decl)
3217 && ! DECL_EXTERNAL (decl)
3218 && DECL_RTL (decl) != 0
3219 && GET_CODE (DECL_RTL (decl)) == MEM)
3220 TIMEVAR (symout_time, sdbout_toplevel_data (decl));
3221 #endif /* SDB_DEBUGGING_INFO */
3222 #ifdef DWARF_DEBUGGING_INFO
3223 /* Output DWARF information for file-scope tentative data object
3224 declarations, file-scope (extern) function declarations (which
3225 had no corresponding body) and file-scope tagged type declarations
3226 and definitions which have not yet been forced out. */
3228 if (write_symbols == DWARF_DEBUG
3229 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
3230 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
3232 #ifdef DWARF2_DEBUGGING_INFO
3233 /* Output DWARF2 information for file-scope tentative data object
3234 declarations, file-scope (extern) function declarations (which
3235 had no corresponding body) and file-scope tagged type declarations
3236 and definitions which have not yet been forced out. */
3238 if (write_symbols == DWARF2_DEBUG
3239 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
3240 TIMEVAR (symout_time, dwarf2out_decl (decl));
3245 /* Write out any pending weak symbol declarations. */
3249 /* Do dbx symbols */
3250 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3251 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3252 TIMEVAR (symout_time,
3254 dbxout_finish (asm_out_file, main_input_filename);
3258 #ifdef DWARF_DEBUGGING_INFO
3259 if (write_symbols == DWARF_DEBUG)
3260 TIMEVAR (symout_time,
3266 #ifdef DWARF2_UNWIND_INFO
3267 if (dwarf2out_do_frame ())
3268 dwarf2out_frame_finish ();
3271 #ifdef DWARF2_DEBUGGING_INFO
3272 if (write_symbols == DWARF2_DEBUG)
3273 TIMEVAR (symout_time,
3275 dwarf2out_finish ();
3279 /* Output some stuff at end of file if nec. */
3281 end_final (dump_base_name);
3283 if (branch_prob_dump)
3284 open_dump_file (".bp", NULL);
3286 TIMEVAR (dump_time, end_branch_prob (rtl_dump_file));
3288 if (branch_prob_dump)
3289 close_dump_file (NULL, NULL_RTX);
3292 ASM_FILE_END (asm_out_file);
3296 /* Language-specific end of compilation actions. */
3300 /* Close the dump files. */
3302 if (flag_gen_aux_info)
3304 fclose (aux_info_file);
3306 unlink (aux_info_file_name);
3311 open_dump_file (".combine", NULL);
3312 TIMEVAR (dump_time, dump_combine_total_stats (rtl_dump_file));
3313 close_dump_file (NULL, NULL_RTX);
3316 /* Close non-debugging input and output files. Take special care to note
3317 whether fclose returns an error, since the pages might still be on the
3318 buffer chain while the file is open. */
3322 if (! flag_syntax_only
3323 && (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0))
3324 fatal_io_error (asm_file_name);
3326 /* Do whatever is necessary to finish printing the graphs. */
3327 if (graph_dump_format != no_graph)
3330 finish_graph_dump_file (dump_base_name, ".jump");
3332 finish_graph_dump_file (dump_base_name, ".addressof");
3334 finish_graph_dump_file (dump_base_name, ".cse");
3336 finish_graph_dump_file (dump_base_name, ".loop");
3338 finish_graph_dump_file (dump_base_name, ".cse2");
3339 if (branch_prob_dump)
3340 finish_graph_dump_file (dump_base_name, ".bp");
3342 finish_graph_dump_file (dump_base_name, ".flow");
3344 finish_graph_dump_file (dump_base_name, ".combine");
3346 finish_graph_dump_file (dump_base_name, ".regmove");
3348 finish_graph_dump_file (dump_base_name, ".sched");
3350 finish_graph_dump_file (dump_base_name, ".lreg");
3351 if (global_reg_dump)
3352 finish_graph_dump_file (dump_base_name, ".greg");
3354 finish_graph_dump_file (dump_base_name, ".flow2");
3356 finish_graph_dump_file (dump_base_name, ".sched2");
3358 finish_graph_dump_file (dump_base_name, ".jump2");
3361 finish_graph_dump_file (dump_base_name, ".dbr");
3364 finish_graph_dump_file (dump_base_name, ".gcse");
3367 finish_graph_dump_file (dump_base_name, ".stack");
3369 #ifdef MACHINE_DEPENDENT_REORG
3370 if (mach_dep_reorg_dump)
3371 finish_graph_dump_file (dump_base_name, ".mach");
3375 /* Free up memory for the benefit of leak detectors. */
3378 /* Print the times. */
3382 fprintf (stderr,"\n");
3383 print_time ("parse", parse_time);
3385 print_time ("integration", integration_time);
3386 print_time ("jump", jump_time);
3387 print_time ("cse", cse_time);
3388 print_time ("gcse", gcse_time);
3389 print_time ("loop", loop_time);
3390 print_time ("cse2", cse2_time);
3391 print_time ("branch-prob", branch_prob_time);
3392 print_time ("flow", flow_time);
3393 print_time ("combine", combine_time);
3394 print_time ("regmove", regmove_time);
3395 print_time ("sched", sched_time);
3396 print_time ("local-alloc", local_alloc_time);
3397 print_time ("global-alloc", global_alloc_time);
3398 print_time ("flow2", flow2_time);
3399 print_time ("sched2", sched2_time);
3401 print_time ("dbranch", dbr_sched_time);
3403 print_time ("shorten-branch", shorten_branch_time);
3404 print_time ("stack-reg", stack_reg_time);
3405 print_time ("final", final_time);
3406 print_time ("varconst", varconst_time);
3407 print_time ("symout", symout_time);
3408 print_time ("dump", dump_time);
3412 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
3413 and TYPE_DECL nodes.
3415 This does nothing for local (non-static) variables.
3416 Otherwise, it sets up the RTL and outputs any assembler code
3417 (label definition, storage allocation and initialization).
3419 DECL is the declaration. If ASMSPEC is nonzero, it specifies
3420 the assembler symbol name to be used. TOP_LEVEL is nonzero
3421 if this declaration is not within a function. */
3424 rest_of_decl_compilation (decl, asmspec, top_level, at_end)
3426 const char *asmspec;
3430 /* Declarations of variables, and of functions defined elsewhere. */
3432 /* The most obvious approach, to put an #ifndef around where
3433 this macro is used, doesn't work since it's inside a macro call. */
3434 #ifndef ASM_FINISH_DECLARE_OBJECT
3435 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
3438 /* Forward declarations for nested functions are not "external",
3439 but we need to treat them as if they were. */
3440 if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
3441 || TREE_CODE (decl) == FUNCTION_DECL)
3442 TIMEVAR (varconst_time,
3444 make_decl_rtl (decl, asmspec, top_level);
3445 /* Initialized extern variable exists to be replaced
3446 with its value, or represents something that will be
3447 output in another file. */
3448 if (! (TREE_CODE (decl) == VAR_DECL
3449 && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
3450 && DECL_INITIAL (decl) != 0
3451 && DECL_INITIAL (decl) != error_mark_node))
3452 /* Don't output anything
3453 when a tentative file-scope definition is seen.
3454 But at end of compilation, do output code for them. */
3455 if (! (! at_end && top_level
3456 && (DECL_INITIAL (decl) == 0
3457 || DECL_INITIAL (decl) == error_mark_node)))
3458 assemble_variable (decl, top_level, at_end, 0);
3459 if (decl == last_assemble_variable_decl)
3461 ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
3465 else if (DECL_REGISTER (decl) && asmspec != 0)
3467 if (decode_reg_name (asmspec) >= 0)
3469 DECL_RTL (decl) = 0;
3470 make_decl_rtl (decl, asmspec, top_level);
3473 error ("invalid register name `%s' for register variable", asmspec);
3475 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3476 else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3477 && TREE_CODE (decl) == TYPE_DECL)
3478 TIMEVAR (symout_time, dbxout_symbol (decl, 0));
3480 #ifdef SDB_DEBUGGING_INFO
3481 else if (write_symbols == SDB_DEBUG && top_level
3482 && TREE_CODE (decl) == TYPE_DECL)
3483 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
3487 /* Called after finishing a record, union or enumeral type. */
3490 rest_of_type_compilation (type, toplev)
3491 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO)
3495 tree type ATTRIBUTE_UNUSED;
3496 int toplev ATTRIBUTE_UNUSED;
3499 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3500 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3501 TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
3503 #ifdef SDB_DEBUGGING_INFO
3504 if (write_symbols == SDB_DEBUG)
3505 TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
3509 /* This is called from finish_function (within yyparse)
3510 after each top-level definition is parsed.
3511 It is supposed to compile that function or variable
3512 and output the assembler code for it.
3513 After we return, the tree storage is freed. */
3516 rest_of_compilation (decl)
3520 int start_time = get_run_time ();
3522 /* Nonzero if we have saved the original DECL_INITIAL of the function,
3523 to be restored after we finish compiling the function
3524 (for use when compiling inline calls to this function). */
3525 tree saved_block_tree = 0;
3526 /* Likewise, for DECL_ARGUMENTS. */
3527 tree saved_arguments = 0;
3529 int rebuild_label_notes_after_reload;
3531 /* If we are reconsidering an inline function
3532 at the end of compilation, skip the stuff for making it inline. */
3534 if (DECL_SAVED_INSNS (decl) == 0)
3539 /* If requested, consider whether to make this function inline. */
3540 if (DECL_INLINE (decl) || flag_inline_functions)
3541 TIMEVAR (integration_time,
3543 lose = function_cannot_inline_p (decl);
3544 if (lose || ! optimize)
3546 if (warn_inline && DECL_INLINE (decl))
3547 warning_with_decl (decl, lose);
3548 DECL_ABSTRACT_ORIGIN (decl) = 0;
3549 /* Don't really compile an extern inline function.
3550 If we can't make it inline, pretend
3551 it was only declared. */
3552 if (DECL_EXTERNAL (decl))
3554 DECL_INITIAL (decl) = 0;
3555 goto exit_rest_of_compilation;
3559 /* ??? Note that this has the effect of making it look
3560 like "inline" was specified for a function if we choose
3561 to inline it. This isn't quite right, but it's
3562 probably not worth the trouble to fix. */
3563 inlinable = DECL_INLINE (decl) = 1;
3566 insns = get_insns ();
3568 /* Dump the rtl code if we are dumping rtl. */
3572 open_dump_file (".rtl", decl_printable_name (decl, 2));
3574 if (DECL_SAVED_INSNS (decl))
3575 fprintf (rtl_dump_file, ";; (integrable)\n\n");
3577 close_dump_file (print_rtl, insns);
3580 /* If we can, defer compiling inlines until EOF.
3581 save_for_inline_copying can be extremely expensive. */
3582 if (inlinable && ! decl_function_context (decl))
3583 DECL_DEFER_OUTPUT (decl) = 1;
3585 /* If function is inline, and we don't yet know whether to
3586 compile it by itself, defer decision till end of compilation.
3587 finish_compilation will call rest_of_compilation again
3588 for those functions that need to be output. Also defer those
3589 functions that we are supposed to defer. We cannot defer
3590 functions containing nested functions since the nested function
3591 data is in our non-saved obstack. We cannot defer nested
3592 functions for the same reason. */
3594 /* If this is a nested inline, remove ADDRESSOF now so we can
3595 finish compiling ourselves. Otherwise, wait until EOF.
3596 We have to do this because the purge_addressof transformation
3597 changes the DECL_RTL for many variables, which confuses integrate. */
3600 if (decl_function_context (decl))
3601 purge_addressof (insns);
3603 DECL_DEFER_OUTPUT (decl) = 1;
3606 if (! current_function_contains_functions
3607 && (DECL_DEFER_OUTPUT (decl)
3608 || (DECL_INLINE (decl)
3609 && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
3610 && ! flag_keep_inline_functions)
3611 || DECL_EXTERNAL (decl)))))
3613 DECL_DEFER_OUTPUT (decl) = 1;
3615 /* If -Wreturn-type, we have to do a bit of compilation.
3616 However, if we just fall through we will call
3617 save_for_inline_copying() which results in excessive
3618 memory use. Instead, we just want to call
3619 jump_optimize() to figure out whether or not we can fall
3620 off the end of the function; we do the minimum amount of
3621 work necessary to make that safe. And, we set optimize
3622 to zero to keep jump_optimize from working too hard. */
3623 if (warn_return_type)
3625 int saved_optimize = optimize;
3627 find_exception_handler_labels ();
3628 jump_optimize (get_insns(), !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
3629 !JUMP_AFTER_REGSCAN);
3630 optimize = saved_optimize;
3633 #ifdef DWARF_DEBUGGING_INFO
3634 /* Generate the DWARF info for the "abstract" instance
3635 of a function which we may later generate inlined and/or
3636 out-of-line instances of. */
3637 if (write_symbols == DWARF_DEBUG)
3639 set_decl_abstract_flags (decl, 1);
3640 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3641 set_decl_abstract_flags (decl, 0);
3644 #ifdef DWARF2_DEBUGGING_INFO
3645 /* Generate the DWARF2 info for the "abstract" instance
3646 of a function which we may later generate inlined and/or
3647 out-of-line instances of. */
3648 if (write_symbols == DWARF2_DEBUG)
3650 set_decl_abstract_flags (decl, 1);
3651 TIMEVAR (symout_time, dwarf2out_decl (decl));
3652 set_decl_abstract_flags (decl, 0);
3655 TIMEVAR (integration_time, save_for_inline_nocopy (decl));
3656 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlinable;
3657 goto exit_rest_of_compilation;
3660 /* If we have to compile the function now, save its rtl and subdecls
3661 so that its compilation will not affect what others get. */
3662 if (inlinable || DECL_DEFER_OUTPUT (decl))
3664 #ifdef DWARF_DEBUGGING_INFO
3665 /* Generate the DWARF info for the "abstract" instance of
3666 a function which we will generate an out-of-line instance
3667 of almost immediately (and which we may also later generate
3668 various inlined instances of). */
3669 if (write_symbols == DWARF_DEBUG)
3671 set_decl_abstract_flags (decl, 1);
3672 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3673 set_decl_abstract_flags (decl, 0);
3676 #ifdef DWARF2_DEBUGGING_INFO
3677 /* Generate the DWARF2 info for the "abstract" instance of
3678 a function which we will generate an out-of-line instance
3679 of almost immediately (and which we may also later generate
3680 various inlined instances of). */
3681 if (write_symbols == DWARF2_DEBUG)
3683 set_decl_abstract_flags (decl, 1);
3684 TIMEVAR (symout_time, dwarf2out_decl (decl));
3685 set_decl_abstract_flags (decl, 0);
3688 saved_block_tree = DECL_INITIAL (decl);
3689 saved_arguments = DECL_ARGUMENTS (decl);
3690 TIMEVAR (integration_time, save_for_inline_copying (decl));
3691 RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlinable;
3694 /* If specified extern inline but we aren't inlining it, we are
3695 done. This goes for anything that gets here with DECL_EXTERNAL
3696 set, not just things with DECL_INLINE. */
3697 if (DECL_EXTERNAL (decl))
3698 goto exit_rest_of_compilation;
3701 if (! DECL_DEFER_OUTPUT (decl))
3702 TREE_ASM_WRITTEN (decl) = 1;
3704 /* Now that integrate will no longer see our rtl, we need not distinguish
3705 between the return value of this function and the return value of called
3707 rtx_equal_function_value_matters = 0;
3709 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3710 if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
3712 goto exit_rest_of_compilation;
3715 /* Emit code to get eh context, if needed. */
3719 /* If we are doing position-independent code generation, now
3720 is the time to output special prologues and epilogues.
3721 We do not want to do this earlier, because it just clutters
3722 up inline functions with meaningless insns. */
3727 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3728 Note that that may have been done above, in save_for_inline_copying.
3729 The call to resume_temporary_allocation near the end of this function
3730 goes back to the usual state of affairs. This must be done after
3731 we've built up any unwinders for exception handling, and done
3732 the FINALIZE_PIC work, if necessary. */
3734 rtl_in_current_obstack ();
3736 insns = get_insns ();
3738 /* Copy any shared structure that should not be shared. */
3740 unshare_all_rtl (insns);
3742 #ifdef SETJMP_VIA_SAVE_AREA
3743 /* This must be performed before virutal register instantiation. */
3744 if (current_function_calls_alloca)
3745 optimize_save_area_alloca (insns);
3748 /* Instantiate all virtual registers. */
3750 instantiate_virtual_regs (current_function_decl, get_insns ());
3752 /* See if we have allocated stack slots that are not directly addressable.
3753 If so, scan all the insns and create explicit address computation
3754 for all references to such slots. */
3755 /* fixup_stack_slots (); */
3757 /* Find all the EH handlers. */
3758 find_exception_handler_labels ();
3760 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3761 are initialized and to compute whether control can drop off the end
3763 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3764 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
3765 JUMP_AFTER_REGSCAN));
3767 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3768 if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
3769 goto exit_rest_of_compilation;
3771 /* Dump rtl code after jump, if we are doing that. */
3774 dump_rtl (".jump", decl, print_rtl, insns);
3776 /* Perform common subexpression elimination.
3777 Nonzero value from `cse_main' means that jumps were simplified
3778 and some code may now be unreachable, so do
3779 jump optimization again. */
3784 open_dump_file (".cse", decl_printable_name (decl, 2));
3786 TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
3788 if (flag_thread_jumps)
3789 /* Hacks by tiemann & kenner. */
3790 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
3792 TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
3794 TIMEVAR (cse_time, delete_trivially_dead_insns (insns, max_reg_num ()));
3796 if (tem || optimize > 1)
3797 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3799 !JUMP_AFTER_REGSCAN));
3801 /* Dump rtl code after cse, if we are doing that. */
3805 close_dump_file (print_rtl, insns);
3806 if (graph_dump_format != no_graph)
3807 print_rtl_graph_with_bb (dump_base_name, ".cse", insns);
3811 purge_addressof (insns);
3812 reg_scan (insns, max_reg_num (), 1);
3816 dump_rtl (".addressof", decl, print_rtl, insns);
3817 if (graph_dump_format != no_graph)
3818 print_rtl_graph_with_bb (dump_base_name, ".addressof", insns);
3821 /* Perform global cse. */
3823 if (optimize > 0 && flag_gcse)
3826 open_dump_file (".gcse", IDENTIFIER_POINTER (DECL_NAME (decl)));
3828 TIMEVAR (gcse_time, tem = gcse_main (insns, rtl_dump_file));
3830 /* If gcse altered any jumps, rerun jump optimizations to clean
3834 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3836 !JUMP_AFTER_REGSCAN));
3841 close_dump_file (print_rtl, insns);
3842 if (graph_dump_format != no_graph)
3843 print_rtl_graph_with_bb (dump_base_name, ".gcse", insns);
3846 /* Move constant computations out of loops. */
3851 open_dump_file (".loop", decl_printable_name (decl, 2));
3856 if (flag_rerun_loop_opt)
3858 /* We only want to perform unrolling once. */
3860 loop_optimize (insns, rtl_dump_file, 0, 0);
3863 /* The first call to loop_optimize makes some instructions
3864 trivially dead. We delete those instructions now in the
3865 hope that doing so will make the heuristics in loop work
3866 better and possibly speed up compilation. */
3867 delete_trivially_dead_insns (insns, max_reg_num ());
3869 /* The regscan pass is currently necessary as the alias
3870 analysis code depends on this information. */
3871 reg_scan (insns, max_reg_num (), 1);
3873 loop_optimize (insns, rtl_dump_file, flag_unroll_loops, 1);
3876 /* Dump rtl code after loop opt, if we are doing that. */
3880 close_dump_file (print_rtl, insns);
3881 if (graph_dump_format != no_graph)
3882 print_rtl_graph_with_bb (dump_base_name, ".loop", insns);
3889 open_dump_file (".cse2", decl_printable_name (decl, 2));
3891 if (flag_rerun_cse_after_loop)
3893 /* Running another jump optimization pass before the second
3894 cse pass sometimes simplifies the RTL enough to allow
3895 the second CSE pass to do a better job. Jump_optimize can change
3896 max_reg_num so we must rerun reg_scan afterwards.
3897 ??? Rework to not call reg_scan so often. */
3898 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3899 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3901 JUMP_AFTER_REGSCAN));
3903 TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
3904 TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
3907 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3909 !JUMP_AFTER_REGSCAN));
3912 if (flag_thread_jumps)
3914 /* This pass of jump threading straightens out code
3915 that was kinked by loop optimization. */
3916 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3917 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
3920 /* Dump rtl code after cse, if we are doing that. */
3924 close_dump_file (print_rtl, insns);
3925 if (graph_dump_format != no_graph)
3926 print_rtl_graph_with_bb (dump_base_name, ".cse2", insns);
3930 if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
3932 if (branch_prob_dump)
3933 open_dump_file (".bp", decl_printable_name (decl, 2));
3938 branch_prob (insns, rtl_dump_file);
3941 if (branch_prob_dump)
3943 close_dump_file (print_rtl, insns);
3944 if (graph_dump_format != no_graph)
3945 print_rtl_graph_with_bb (dump_base_name, ".bp", insns);
3949 /* We are no longer anticipating cse in this function, at least. */
3951 cse_not_expected = 1;
3953 /* Now we choose between stupid (pcc-like) register allocation
3954 (if we got the -noreg switch and not -opt)
3955 and smart register allocation. */
3957 if (optimize > 0) /* Stupid allocation probably won't work */
3958 obey_regdecls = 0; /* if optimizations being done. */
3962 /* Print function header into flow dump now
3963 because doing the flow analysis makes some of the dump. */
3966 open_dump_file (".flow", decl_printable_name (decl, 2));
3972 regclass (insns, max_reg_num ());
3973 stupid_life_analysis (insns, max_reg_num (),
3979 /* Do control and data flow analysis,
3980 and write some of the results to dump file. */
3985 find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1);
3986 life_analysis (insns, max_reg_num (), rtl_dump_file);
3989 if (warn_uninitialized)
3991 uninitialized_vars_warning (DECL_INITIAL (decl));
3992 setjmp_args_warning ();
3996 /* Dump rtl after flow analysis. */
4000 close_dump_file (print_rtl_with_bb, insns);
4001 if (graph_dump_format != no_graph)
4002 print_rtl_graph_with_bb (dump_base_name, ".flow", insns);
4005 /* The first life analysis pass has finished. From now on we can not
4006 generate any new pseudos. */
4009 /* If -opt, try combining insns through substitution. */
4013 TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
4015 /* Dump rtl code after insn combination. */
4019 dump_rtl (".combine", decl, print_rtl_with_bb, insns);
4020 if (graph_dump_format != no_graph)
4021 print_rtl_graph_with_bb (dump_base_name, ".combine", insns);
4025 /* Register allocation pre-pass, to reduce number of moves
4026 necessary for two-address machines. */
4027 if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
4030 open_dump_file (".regmove", decl_printable_name (decl, 2));
4032 TIMEVAR (regmove_time, regmove_optimize (insns, max_reg_num (),
4037 close_dump_file (print_rtl_with_bb, insns);
4038 if (graph_dump_format != no_graph)
4039 print_rtl_graph_with_bb (dump_base_name, ".regmove", insns);
4043 /* Print function header into sched dump now
4044 because doing the sched analysis makes some of the dump. */
4046 if (optimize > 0 && flag_schedule_insns)
4049 open_dump_file (".sched", decl_printable_name (decl, 2));
4051 /* Do control and data sched analysis,
4052 and write some of the results to dump file. */
4054 TIMEVAR (sched_time, schedule_insns (rtl_dump_file));
4056 /* Dump rtl after instruction scheduling. */
4060 close_dump_file (print_rtl_with_bb, insns);
4061 if (graph_dump_format != no_graph)
4062 print_rtl_graph_with_bb (dump_base_name, ".sched", insns);
4066 /* Unless we did stupid register allocation,
4067 allocate pseudo-regs that are used only within 1 basic block.
4069 RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
4070 jump optimizer after register allocation and reloading are finished. */
4073 TIMEVAR (local_alloc_time,
4075 recompute_reg_usage (insns, ! optimize_size);
4076 regclass (insns, max_reg_num ());
4077 rebuild_label_notes_after_reload = local_alloc ();
4080 rebuild_label_notes_after_reload = 0;
4082 /* Dump rtl code after allocating regs within basic blocks. */
4086 open_dump_file (".lreg", decl_printable_name (decl, 2));
4088 TIMEVAR (dump_time, dump_flow_info (rtl_dump_file));
4089 TIMEVAR (dump_time, dump_local_alloc (rtl_dump_file));
4091 close_dump_file (print_rtl_with_bb, insns);
4092 if (graph_dump_format != no_graph)
4093 print_rtl_graph_with_bb (dump_base_name, ".lreg", insns);
4096 if (global_reg_dump)
4097 open_dump_file (".greg", decl_printable_name (decl, 2));
4099 /* Unless we did stupid register allocation,
4100 allocate remaining pseudo-regs, then do the reload pass
4101 fixing up any insns that are invalid. */
4103 TIMEVAR (global_alloc_time,
4106 failure = global_alloc (rtl_dump_file);
4108 failure = reload (insns, 0, rtl_dump_file);
4113 goto exit_rest_of_compilation;
4115 /* Do a very simple CSE pass over just the hard registers. */
4117 reload_cse_regs (insns);
4119 /* Register allocation and reloading may have turned an indirect jump into
4120 a direct jump. If so, we must rebuild the JUMP_LABEL fields of
4121 jumping instructions. */
4122 if (rebuild_label_notes_after_reload)
4123 TIMEVAR (jump_time, rebuild_jump_labels (insns));
4125 /* If optimizing and we are performing instruction scheduling after
4126 reload, then go ahead and split insns now since we are about to
4127 recompute flow information anyway.
4129 reload_cse_regs may expose more splitting opportunities, expecially
4130 for double-word operations. */
4131 if (optimize > 0 && flag_schedule_insns_after_reload)
4135 for (insn = insns; insn; insn = NEXT_INSN (insn))
4139 if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
4142 last = try_split (PATTERN (insn), insn, 1);
4146 PUT_CODE (insn, NOTE);
4147 NOTE_SOURCE_FILE (insn) = 0;
4148 NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
4153 if (global_reg_dump)
4155 TIMEVAR (dump_time, dump_global_regs (rtl_dump_file));
4156 close_dump_file (print_rtl_with_bb, insns);
4157 if (graph_dump_format != no_graph)
4158 print_rtl_graph_with_bb (dump_base_name, ".greg", insns);
4161 /* Re-create the death notes which were deleted during reload. */
4163 open_dump_file (".flow2", decl_printable_name (decl, 2));
4170 find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1);
4171 life_analysis (insns, max_reg_num (), rtl_dump_file);
4175 flow2_completed = 1;
4177 /* On some machines, the prologue and epilogue code, or parts thereof,
4178 can be represented as RTL. Doing so lets us schedule insns between
4179 it and the rest of the code and also allows delayed branch
4180 scheduling to operate in the epilogue. */
4182 thread_prologue_and_epilogue_insns (insns);
4186 close_dump_file (print_rtl_with_bb, insns);
4187 if (graph_dump_format != no_graph)
4188 print_rtl_graph_with_bb (dump_base_name, ".flow2", insns);
4191 if (optimize > 0 && flag_schedule_insns_after_reload)
4194 open_dump_file (".sched2", decl_printable_name (decl, 2));
4196 /* Do control and data sched analysis again,
4197 and write some more of the results to dump file. */
4199 TIMEVAR (sched2_time, schedule_insns (rtl_dump_file));
4201 /* Dump rtl after post-reorder instruction scheduling. */
4205 close_dump_file (print_rtl_with_bb, insns);
4206 if (graph_dump_format != no_graph)
4207 print_rtl_graph_with_bb (dump_base_name, ".sched2", insns);
4211 #ifdef LEAF_REGISTERS
4213 if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
4217 /* One more attempt to remove jumps to .+1
4218 left by dead-store-elimination.
4219 Also do cross-jumping this time
4220 and delete no-op move insns. */
4224 TIMEVAR (jump_time, jump_optimize (insns, JUMP_CROSS_JUMP,
4226 !JUMP_AFTER_REGSCAN));
4228 /* Dump rtl code after jump, if we are doing that. */
4232 dump_rtl (".jump2", decl, print_rtl_with_bb, insns);
4233 if (graph_dump_format != no_graph)
4234 print_rtl_graph_with_bb (dump_base_name, ".jump2", insns);
4238 /* If a machine dependent reorganization is needed, call it. */
4239 #ifdef MACHINE_DEPENDENT_REORG
4240 MACHINE_DEPENDENT_REORG (insns);
4242 if (mach_dep_reorg_dump)
4244 dump_rtl (".mach", decl, print_rtl_with_bb, insns);
4245 if (graph_dump_format != no_graph)
4246 print_rtl_graph_with_bb (dump_base_name, ".mach", insns);
4250 /* If a scheduling pass for delayed branches is to be done,
4251 call the scheduling code. */
4254 if (optimize > 0 && flag_delayed_branch)
4257 open_dump_file (".dbr", decl_printable_name (decl, 2));
4259 TIMEVAR (dbr_sched_time, dbr_schedule (insns, rtl_dump_file));
4263 close_dump_file (print_rtl_with_bb, insns);
4264 if (graph_dump_format != no_graph)
4265 print_rtl_graph_with_bb (dump_base_name, ".dbr", insns);
4270 /* Shorten branches. */
4271 TIMEVAR (shorten_branch_time,
4273 shorten_branches (get_insns ());
4278 open_dump_file (".stack", decl_printable_name (decl, 2));
4280 TIMEVAR (stack_reg_time, reg_to_stack (insns, rtl_dump_file));
4284 dump_rtl (".stack", decl, print_rtl_with_bb, insns);
4285 if (graph_dump_format != no_graph)
4286 print_rtl_graph_with_bb (dump_base_name, ".stack", insns);
4290 /* Now turn the rtl into assembler code. */
4292 TIMEVAR (final_time,
4297 /* Get the function's name, as described by its RTL.
4298 This may be different from the DECL_NAME name used
4299 in the source file. */
4301 x = DECL_RTL (decl);
4302 if (GET_CODE (x) != MEM)
4305 if (GET_CODE (x) != SYMBOL_REF)
4307 fnname = XSTR (x, 0);
4309 assemble_start_function (decl, fnname);
4310 final_start_function (insns, asm_out_file, optimize);
4311 final (insns, asm_out_file, optimize, 0);
4312 final_end_function (insns, asm_out_file, optimize);
4313 assemble_end_function (decl, fnname);
4315 fflush (asm_out_file);
4317 /* Release all memory allocated by flow. */
4318 free_basic_block_vars (0);
4320 /* Release all memory held by regsets now */
4321 regset_release_memory ();
4324 /* Write DBX symbols if requested */
4326 /* Note that for those inline functions where we don't initially
4327 know for certain that we will be generating an out-of-line copy,
4328 the first invocation of this routine (rest_of_compilation) will
4329 skip over this code by doing a `goto exit_rest_of_compilation;'.
4330 Later on, finish_compilation will call rest_of_compilation again
4331 for those inline functions that need to have out-of-line copies
4332 generated. During that call, we *will* be routed past here. */
4334 #ifdef DBX_DEBUGGING_INFO
4335 if (write_symbols == DBX_DEBUG)
4336 TIMEVAR (symout_time, dbxout_function (decl));
4339 #ifdef DWARF_DEBUGGING_INFO
4340 if (write_symbols == DWARF_DEBUG)
4341 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
4344 #ifdef DWARF2_DEBUGGING_INFO
4345 if (write_symbols == DWARF2_DEBUG)
4346 TIMEVAR (symout_time, dwarf2out_decl (decl));
4349 exit_rest_of_compilation:
4353 /* In case the function was not output,
4354 don't leave any temporary anonymous types
4355 queued up for sdb output. */
4356 #ifdef SDB_DEBUGGING_INFO
4357 if (write_symbols == SDB_DEBUG)
4358 sdbout_types (NULL_TREE);
4361 /* Put back the tree of subblocks and list of arguments
4362 from before we copied them.
4363 Code generation and the output of debugging info may have modified
4364 the copy, but the original is unchanged. */
4366 if (saved_block_tree != 0)
4368 DECL_INITIAL (decl) = saved_block_tree;
4369 DECL_ARGUMENTS (decl) = saved_arguments;
4370 DECL_ABSTRACT_ORIGIN (decl) = NULL_TREE;
4373 reload_completed = 0;
4374 flow2_completed = 0;
4377 TIMEVAR (final_time,
4379 /* Clear out the insn_length contents now that they are no
4381 init_insn_lengths ();
4383 /* Clear out the real_constant_chain before some of the rtx's
4384 it runs through become garbage. */
4385 clear_const_double_mem ();
4387 /* Cancel the effect of rtl_in_current_obstack. */
4388 resume_temporary_allocation ();
4390 /* Show no temporary slots allocated. */
4394 /* Make sure volatile mem refs aren't considered valid operands for
4395 arithmetic insns. We must call this here if this is a nested inline
4396 function, since the above code leaves us in the init_recog state
4397 (from final.c), and the function context push/pop code does not
4398 save/restore volatile_ok.
4400 ??? Maybe it isn't necessary for expand_start_function to call this
4401 anymore if we do it here? */
4403 init_recog_no_volatile ();
4405 /* The parsing time is all the time spent in yyparse
4406 *except* what is spent in this function. */
4408 parse_time -= get_run_time () - start_time;
4410 /* Reset global variables. */
4411 free_basic_block_vars (0);
4422 printf ("Usage: %s input [switches]\n", progname);
4423 printf ("Switches:\n");
4425 printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n");
4426 printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n");
4427 printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n");
4429 for (i = NUM_ELEM (f_options); i--;)
4431 const char * description = f_options[i].description;
4433 if (description != NULL && * description != 0)
4434 printf (" -f%-21s %s\n",
4435 f_options[i].string, description);
4438 printf (" -O[number] Set optimisation level to [number]\n");
4439 printf (" -Os Optimise for space rather than speed\n");
4440 printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n");
4441 printf (" -pedantic-errors Like -pedantic except that errors are produced\n");
4442 printf (" -w Suppress warnings\n");
4443 printf (" -W Enable extra warnings\n");
4445 for (i = NUM_ELEM (W_options); i--;)
4447 const char * description = W_options[i].description;
4449 if (description != NULL && * description != 0)
4450 printf (" -W%-21s %s\n",
4451 W_options[i].string, description);
4454 printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n");
4455 printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n");
4456 printf (" -p Enable function profiling\n");
4457 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER)
4458 printf (" -a Enable block profiling \n");
4460 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT
4461 printf (" -ax Enable jump profiling \n");
4463 printf (" -o <file> Place output into <file> \n");
4464 printf (" -G <number> Put global and static data smaller than <number>\n");
4465 printf (" bytes into a special section (on some targets)\n");
4467 for (i = NUM_ELEM (debug_args); i--;)
4469 if (debug_args[i].description != NULL)
4470 printf (" -%-22s %s\n", debug_args[i].arg, debug_args[i].description);
4473 printf (" -aux-info <file> Emit declaration info into <file>.X\n");
4474 printf (" -quiet Do not display functions compiled or elapsed time\n");
4475 printf (" -version Display the compiler's version\n");
4476 printf (" -d[letters] Enable dumps from specific passes of the compiler\n");
4477 printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n");
4478 #if defined HAIFA || defined INSN_SCHEDULING
4479 printf (" -sched-verbose-<number> Set the verbosity level of the scheduler\n");
4481 printf (" --help Display this information\n");
4486 /* Display descriptions of language specific options.
4487 If there is no description, note that there is an undocumented option.
4488 If the description is empty, do not display anything. (This allows
4489 options to be deliberately undocumented, for whatever reason).
4490 If the option string is missing, then this is a marker, indicating
4491 that the description string is in fact the name of a language, whose
4492 language specific options are to follow. */
4494 if (NUM_ELEM (documented_lang_options) > 1)
4496 printf ("\nLanguage specific options:\n");
4498 for (i = 0; i < NUM_ELEM (documented_lang_options); i++)
4500 const char * description = documented_lang_options[i].description;
4501 const char * option = documented_lang_options[i].option;
4503 if (description == NULL)
4508 printf (" %-23.23s [undocumented]\n", option);
4510 else if (* description == 0)
4512 else if (option == NULL)
4516 ("\nThere are undocumented %s specific options as well.\n",
4520 printf ("\n Options for %s:\n", description);
4525 printf (" %-23.23s %s\n", option, description);
4530 printf ("\nThere are undocumented %s specific options as well.\n", lang);
4532 if (NUM_ELEM (target_switches) > 1
4533 #ifdef TARGET_OPTIONS
4534 || NUM_ELEM (target_options) > 1
4542 printf ("\nTarget specific options:\n");
4544 for (i = NUM_ELEM (target_switches); i--;)
4546 const char * option = target_switches[i].name;
4547 const char * description = target_switches[i].description;
4549 if (option == NULL || * option == 0)
4551 else if (description == NULL)
4556 printf (" -m%-21.21s [undocumented]\n", option);
4558 else if (* description != 0)
4559 doc += printf (" -m%-21.21s %s\n", option, description);
4562 #ifdef TARGET_OPTIONS
4563 for (i = NUM_ELEM (target_options); i--;)
4565 const char * option = target_options[i].prefix;
4566 const char * description = target_options[i].description;
4568 if (option == NULL || * option == 0)
4570 else if (description == NULL)
4575 printf (" -m%-21.21s [undocumented]\n", option);
4577 else if (* description != 0)
4578 doc += printf (" -m%-21.21s %s\n", option, description);
4584 printf ("\nThere are undocumented target specific options as well.\n");
4586 printf (" They exist, but they are not documented.\n");
4591 /* Compare the user specified 'option' with the language
4592 specific 'lang_option'. Return true if they match, or
4593 if 'option' is a viable prefix of 'lang_option'. */
4596 check_lang_option (option, lang_option)
4600 lang_independent_options * indep_options;
4605 /* Ignore NULL entries. */
4606 if (option == NULL || lang_option == NULL)
4609 if ((space = strchr (lang_option, ' ')) != NULL)
4610 len = space - lang_option;
4612 len = strlen (lang_option);
4614 /* If they do not match to the first n characters then fail. */
4615 if (strncmp (option, lang_option, len) != 0)
4618 /* Do not accept a lang option, if it matches a normal -f or -W
4619 option. Chill defines a -fpack, but we want to support
4622 /* An exact match is OK */
4623 if ((int) strlen (option) == len)
4626 /* If it is not an -f or -W option allow the match */
4627 if (option[0] != '-')
4632 case 'f': indep_options = f_options; break;
4633 case 'W': indep_options = W_options; break;
4637 /* The option is a -f or -W option.
4638 Skip past the prefix and search for the remainder in the
4639 appropriate table of options. */
4642 if (option[0] == 'n' && option[1] == 'o' && option[2] == '-')
4645 for (k = NUM_ELEM (indep_options); k--;)
4647 if (!strcmp (option, indep_options[k].string))
4649 /* The option matched a language independent option,
4650 do not allow the language specific match. */
4656 /* The option matches the start of the langauge specific option
4657 and it is not an exact match for a language independent option. */
4661 /* Entry point of cc1/c++. Decode command args, then call compile_file.
4662 Exit code is 35 if can't open files, 34 if fatal error,
4663 33 if had nonfatal errors, else success. */
4672 int flag_print_mem = 0;
4673 int version_flag = 0;
4676 /* save in case md file wants to emit args as a comment. */
4680 p = argv[0] + strlen (argv[0]);
4681 while (p != argv[0] && p[-1] != '/'
4682 #ifdef DIR_SEPARATOR
4683 && p[-1] != DIR_SEPARATOR
4689 #if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
4690 /* Get rid of any avoidable limit on stack size. */
4694 /* Set the stack limit huge so that alloca does not fail. */
4695 getrlimit (RLIMIT_STACK, &rlim);
4696 rlim.rlim_cur = rlim.rlim_max;
4697 setrlimit (RLIMIT_STACK, &rlim);
4701 #ifdef HAVE_LC_MESSAGES
4702 setlocale (LC_MESSAGES, "");
4704 (void) bindtextdomain (PACKAGE, localedir);
4705 (void) textdomain (PACKAGE);
4707 signal (SIGFPE, float_signal);
4710 signal (SIGPIPE, pipe_closed);
4713 decl_printable_name = decl_name;
4714 lang_expand_expr = (lang_expand_expr_t) do_abort;
4716 /* Initialize whether `char' is signed. */
4717 flag_signed_char = DEFAULT_SIGNED_CHAR;
4718 #ifdef DEFAULT_SHORT_ENUMS
4719 /* Initialize how much space enums occupy, by default. */
4720 flag_short_enums = DEFAULT_SHORT_ENUMS;
4723 /* Perform language-specific options intialization. */
4724 lang_init_options ();
4726 /* Scan to see what optimization level has been specified. That will
4727 determine the default value of many flags. */
4728 for (i = 1; i < argc; i++)
4730 if (!strcmp (argv[i], "-O"))
4735 else if (argv[i][0] == '-' && argv[i][1] == 'O')
4737 /* Handle -Os, -O2, -O3, -O69, ... */
4738 char *p = &argv[i][2];
4740 if ((p[0] == 's') && (p[1] == 0))
4744 /* Optimizing for size forces optimize to be 2. */
4749 const int optimize_val = read_integral_parameter (p, p - 2, -1);
4750 if (optimize_val != -1)
4752 optimize = optimize_val;
4759 obey_regdecls = (optimize == 0);
4764 flag_thread_jumps = 1;
4766 flag_delayed_branch = 1;
4768 #ifdef CAN_DEBUG_WITHOUT_FP
4769 flag_omit_frame_pointer = 1;
4775 flag_cse_follow_jumps = 1;
4776 flag_cse_skip_blocks = 1;
4778 flag_expensive_optimizations = 1;
4779 flag_strength_reduce = 1;
4780 flag_rerun_cse_after_loop = 1;
4781 flag_rerun_loop_opt = 1;
4782 flag_caller_saves = 1;
4784 #ifdef INSN_SCHEDULING
4785 flag_schedule_insns = 1;
4786 flag_schedule_insns_after_reload = 1;
4789 flag_strict_aliasing = 1;
4794 flag_inline_functions = 1;
4797 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
4800 set_target_switch ("");
4802 #ifdef OPTIMIZATION_OPTIONS
4803 /* Allow default optimizations to be specified on a per-machine basis. */
4804 OPTIMIZATION_OPTIONS (optimize, optimize_size);
4807 /* Initialize register usage now so switches may override. */
4810 for (i = 1; i < argc; i++)
4814 /* If this is a language-specific option,
4815 decode it in a language-specific way. */
4816 for (j = NUM_ELEM (documented_lang_options); j--;)
4817 if (check_lang_option (argv[i], documented_lang_options[j].option))
4820 if (j != (size_t)-1)
4822 /* If the option is valid for *some* language,
4823 treat it as valid even if this language doesn't understand it. */
4824 int strings_processed = lang_decode_option (argc - i, argv + i);
4826 if (!strcmp (argv[i], "--help"))
4832 if (strings_processed != 0)
4833 i += strings_processed - 1;
4835 else if (argv[i][0] == '-' && argv[i][1] != 0)
4837 register char *str = argv[i] + 1;
4842 set_target_switch (&str[1]);
4843 else if (!strcmp (str, "dumpbase"))
4845 dump_base_name = argv[++i];
4847 else if (str[0] == 'd')
4849 register char *p = &str[1];
4854 branch_prob_dump = 1;
4861 global_reg_dump = 1;
4869 cse_dump = 1, cse2_dump = 1;
4876 #ifdef MACHINE_DEPENDENT_REORG
4877 mach_dep_reorg_dump = 1;
4884 branch_prob_dump = 1;
4901 global_reg_dump = 1;
4926 #ifdef MACHINE_DEPENDENT_REORG
4928 mach_dep_reorg_dump = 1;
4932 flag_print_asm_name = 1;
4953 graph_dump_format = vcg;
4962 rtl_dump_and_exit = 1;
4964 case 'D': /* these are handled by the preprocessor */
4968 warning ("unrecognised gcc debugging option: %c", p[-1]);
4972 else if (str[0] == 'f')
4974 register char *p = &str[1];
4977 /* Some kind of -f option.
4978 P's value is the option sans `-f'.
4979 Search for it in the table of options. */
4982 !found && j < sizeof (f_options) / sizeof (f_options[0]);
4985 if (!strcmp (p, f_options[j].string))
4987 *f_options[j].variable = f_options[j].on_value;
4988 /* A goto here would be cleaner,
4989 but breaks the vax pcc. */
4992 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
4993 && ! strcmp (p+3, f_options[j].string))
4995 *f_options[j].variable = ! f_options[j].on_value;
5003 #ifdef INSN_SCHEDULING
5004 else if (!strncmp (p, "sched-verbose-",14))
5005 fix_sched_param("verbose",&p[14]);
5008 else if (!strncmp (p, "fixed-", 6))
5009 fix_register (&p[6], 1, 1);
5010 else if (!strncmp (p, "call-used-", 10))
5011 fix_register (&p[10], 0, 1);
5012 else if (!strncmp (p, "call-saved-", 11))
5013 fix_register (&p[11], 0, 0);
5015 error ("Invalid option `%s'", argv[i]);
5017 else if (str[0] == 'O')
5019 /* Already been treated above. Do nothing. */
5021 else if (!strcmp (str, "pedantic"))
5023 else if (!strcmp (str, "pedantic-errors"))
5024 flag_pedantic_errors = pedantic = 1;
5025 else if (!strcmp (str, "quiet"))
5027 else if (!strcmp (str, "version"))
5029 else if (!strcmp (str, "w"))
5030 inhibit_warnings = 1;
5031 else if (!strcmp (str, "W"))
5034 /* We save the value of warn_uninitialized, since if they put
5035 -Wuninitialized on the command line, we need to generate a
5036 warning about not using it without also specifying -O. */
5037 if (warn_uninitialized != 1)
5038 warn_uninitialized = 2;
5040 else if (str[0] == 'W')
5042 register char *p = &str[1];
5045 /* Some kind of -W option.
5046 P's value is the option sans `-W'.
5047 Search for it in the table of options. */
5050 !found && j < sizeof (W_options) / sizeof (W_options[0]);
5053 if (!strcmp (p, W_options[j].string))
5055 *W_options[j].variable = W_options[j].on_value;
5056 /* A goto here would be cleaner,
5057 but breaks the vax pcc. */
5060 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
5061 && ! strcmp (p+3, W_options[j].string))
5063 *W_options[j].variable = ! W_options[j].on_value;
5070 else if (!strncmp (p, "id-clash-", 9))
5072 const int id_clash_val
5073 = read_integral_parameter (p + 9, p - 2, -1);
5074 if (id_clash_val != -1)
5076 id_clash_len = id_clash_val;
5080 else if (!strncmp (p, "larger-than-", 12))
5082 const int larger_than_val
5083 = read_integral_parameter (p + 12, p - 2, -1);
5084 if (larger_than_val != -1)
5086 larger_than_size = larger_than_val;
5087 warn_larger_than = 1;
5091 error ("Invalid option `%s'", argv[i]);
5093 else if (!strcmp (str, "p"))
5097 else if (!strcmp (str, "a"))
5099 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5100 warning ("`-a' option (basic block profile) not supported");
5102 profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
5105 else if (!strcmp (str, "ax"))
5107 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5108 warning ("`-ax' option (jump profiling) not supported");
5110 profile_block_flag = (!profile_block_flag
5111 || profile_block_flag == 2) ? 2 : 3;
5114 else if (str[0] == 'g')
5117 /* A lot of code assumes write_symbols == NO_DEBUG if the
5118 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
5119 of what debugging type has been selected). This records the
5120 selected type. It is an error to specify more than one
5122 static enum debug_info_type selected_debug_type = NO_DEBUG;
5123 /* Non-zero if debugging format has been explicitly set.
5124 -g and -ggdb don't explicitly set the debugging format so
5125 -gdwarf -g3 is equivalent to -gdwarf3. */
5126 static int type_explicitly_set_p = 0;
5127 /* Indexed by enum debug_info_type. */
5128 static const char *debug_type_names[] =
5130 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
5133 /* The maximum admissible debug level value. */
5134 static const unsigned max_debug_level = 3;
5136 /* Look up STR in the table. */
5137 for (da = debug_args; da->arg; da++)
5139 const int da_len = strlen (da->arg);
5141 if (! strncmp (str, da->arg, da_len))
5143 enum debug_info_type type = da->debug_type;
5144 const char *p = str + da_len;
5146 if (*p && (*p < '0' || *p > '9'))
5149 /* A debug flag without a level defaults to level 2.
5150 Note we do not want to call read_integral_parameter
5151 for that case since it will call atoi which
5154 ??? We may want to generalize the interface to
5155 read_integral_parameter to better handle this case
5156 if this case shows up often. */
5158 level = read_integral_parameter (p, 0,
5159 max_debug_level + 1);
5163 if (da_len > 1 && !strncmp (str, "gdwarf", da_len))
5165 error ("use -gdwarf -g%d for DWARF v1, level %d",
5168 error ("use -gdwarf-2 for DWARF v2");
5171 if (level > max_debug_level)
5173 warning ("ignoring option `%s' due to invalid debug level specification",
5175 level = debug_info_level;
5178 if (type == NO_DEBUG)
5180 type = PREFERRED_DEBUGGING_TYPE;
5181 if (da_len > 1 && strncmp (str, "ggdb", da_len) == 0)
5183 #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2)
5184 type = DWARF2_DEBUG;
5186 #ifdef DBX_DEBUGGING_INFO
5193 if (type == NO_DEBUG)
5194 warning ("`-%s' not supported by this configuration of GCC",
5197 /* Does it conflict with an already selected type? */
5198 if (type_explicitly_set_p
5199 /* -g/-ggdb don't conflict with anything */
5200 && da->debug_type != NO_DEBUG
5201 && type != selected_debug_type)
5202 warning ("`-%s' ignored, conflicts with `-g%s'",
5203 str, debug_type_names[(int) selected_debug_type]);
5206 /* If the format has already been set, -g/-ggdb
5207 only change the debug level. */
5208 if (type_explicitly_set_p
5209 && da->debug_type == NO_DEBUG)
5210 ; /* don't change debugging type */
5213 selected_debug_type = type;
5214 type_explicitly_set_p = da->debug_type != NO_DEBUG;
5216 write_symbols = (level == 0
5218 : selected_debug_type);
5219 use_gnu_debug_info_extensions = da->use_extensions_p;
5220 debug_info_level = (enum debug_info_level) level;
5226 warning ("`-%s' not supported by this configuration of GCC",
5229 else if (!strcmp (str, "o"))
5231 asm_file_name = argv[++i];
5233 else if (str[0] == 'G')
5235 const int g_switch_val = (str[1] != '\0') ?
5236 read_integral_parameter(str + 1, 0, -1) :
5237 read_integral_parameter(argv[++i], 0, -1);
5239 if (g_switch_val != -1)
5241 g_switch_set = TRUE;
5242 g_switch_value = g_switch_val;
5246 error("Invalid option `-%s'",str);
5249 else if (!strncmp (str, "aux-info", 8))
5251 flag_gen_aux_info = 1;
5252 aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
5254 else if (!strcmp (str, "-help"))
5260 error ("Invalid option `%s'", argv[i]);
5262 else if (argv[i][0] == '+')
5263 error ("Invalid option `%s'", argv[i]);
5268 /* Checker uses the frame pointer. */
5269 if (flag_check_memory_usage)
5270 flag_omit_frame_pointer = 0;
5274 /* Inlining does not work if not optimizing,
5275 so force it not to be done. */
5279 /* The c_decode_option and lang_decode_option functions set
5280 this to `2' if -Wall is used, so we can avoid giving out
5281 lots of errors for people who don't realize what -Wall does. */
5282 if (warn_uninitialized == 1)
5283 warning ("-Wuninitialized is not supported without -O");
5286 #ifdef OVERRIDE_OPTIONS
5287 /* Some machines may reject certain combinations of options. */
5291 if (exceptions_via_longjmp == 2)
5293 #ifdef DWARF2_UNWIND_INFO
5294 exceptions_via_longjmp = ! DWARF2_UNWIND_INFO;
5296 exceptions_via_longjmp = 1;
5300 if (profile_block_flag == 3)
5302 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
5303 profile_block_flag = 2;
5306 /* Unrolling all loops implies that standard loop unrolling must also
5308 if (flag_unroll_all_loops)
5309 flag_unroll_loops = 1;
5310 /* Loop unrolling requires that strength_reduction be on also. Silently
5311 turn on strength reduction here if it isn't already on. Also, the loop
5312 unrolling code assumes that cse will be run after loop, so that must
5313 be turned on also. */
5314 if (flag_unroll_loops)
5316 flag_strength_reduce = 1;
5317 flag_rerun_cse_after_loop = 1;
5320 /* Warn about options that are not supported on this machine. */
5321 #ifndef INSN_SCHEDULING
5322 if (flag_schedule_insns || flag_schedule_insns_after_reload)
5323 warning ("instruction scheduling not supported on this target machine");
5326 if (flag_delayed_branch)
5327 warning ("this target machine does not have delayed branches");
5330 user_label_prefix = USER_LABEL_PREFIX;
5331 if (flag_leading_underscore != -1)
5333 /* If the default prefix is more complicated than "" or "_",
5334 issue a warning and ignore this option. */
5335 if (user_label_prefix[0] == 0 ||
5336 (user_label_prefix[0] == '_' && user_label_prefix[1] == 0))
5338 user_label_prefix = flag_leading_underscore ? "_" : "";
5341 warning ("-f%sleading-underscore not supported on this target machine",
5342 flag_leading_underscore ? "" : "no-");
5345 /* If we are in verbose mode, write out the version and maybe all the
5346 option flags in use. */
5349 print_version (stderr, "");
5351 print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
5354 compile_file (filename);
5356 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX)
5359 char *lim = (char *) sbrk (0);
5361 notice ("Data size %ld.\n", (long) (lim - (char *) &environ));
5366 system ("ps -l 1>&2");
5369 #endif /* not USG */
5372 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */
5375 exit (FATAL_EXIT_CODE);
5377 exit (FATAL_EXIT_CODE);
5378 exit (SUCCESS_EXIT_CODE);
5382 /* Decode -m switches. */
5383 /* Decode the switch -mNAME. */
5386 set_target_switch (name)
5390 int valid_target_option = 0;
5392 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
5393 if (!strcmp (target_switches[j].name, name))
5395 if (target_switches[j].value < 0)
5396 target_flags &= ~-target_switches[j].value;
5398 target_flags |= target_switches[j].value;
5399 valid_target_option = 1;
5402 #ifdef TARGET_OPTIONS
5403 if (!valid_target_option)
5404 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
5406 int len = strlen (target_options[j].prefix);
5407 if (!strncmp (target_options[j].prefix, name, len))
5409 *target_options[j].variable = name + len;
5410 valid_target_option = 1;
5415 if (!valid_target_option)
5416 error ("Invalid option `%s'", name);
5419 /* Print version information to FILE.
5420 Each line begins with INDENT (for the case where FILE is the
5421 assembler output file). */
5424 print_version (file, indent)
5429 #define __VERSION__ "[?]"
5433 "%s%s%s version %s (%s) compiled by GNU C version %s.\n"
5435 "%s%s%s version %s (%s) compiled by CC.\n"
5437 , indent, *indent != 0 ? " " : "",
5438 language_string, version_string, TARGET_NAME, __VERSION__);
5441 /* Print an option value and return the adjusted position in the line.
5442 ??? We don't handle error returns from fprintf (disk full); presumably
5443 other code will catch a disk full though. */
5446 print_single_switch (file, pos, max, indent, sep, term, type, name)
5449 const char *indent, *sep, *term, *type, *name;
5451 /* The ultrix fprintf returns 0 on success, so compute the result we want
5452 here since we need it for the following test. */
5453 int len = strlen (sep) + strlen (type) + strlen (name);
5458 fprintf (file, "%s", term);
5463 fprintf (file, "%s", indent);
5464 pos = strlen (indent);
5466 fprintf (file, "%s%s%s", sep, type, name);
5471 /* Print active target switches to FILE.
5472 POS is the current cursor position and MAX is the size of a "line".
5473 Each line begins with INDENT and ends with TERM.
5474 Each switch is separated from the next by SEP. */
5477 print_switch_values (file, pos, max, indent, sep, term)
5480 const char *indent, *sep, *term;
5485 /* Print the options as passed. */
5487 pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
5488 _("options passed: "), "");
5490 for (p = &save_argv[1]; *p != NULL; p++)
5494 if (strcmp (*p, "-o") == 0)
5500 if (strcmp (*p, "-quiet") == 0)
5502 if (strcmp (*p, "-version") == 0)
5507 pos = print_single_switch (file, pos, max, indent, sep, term, *p, "");
5510 fprintf (file, "%s", term);
5512 /* Print the -f and -m options that have been enabled.
5513 We don't handle language specific options but printing argv
5516 pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
5517 _("options enabled: "), "");
5519 for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
5520 if (*f_options[j].variable == f_options[j].on_value)
5521 pos = print_single_switch (file, pos, max, indent, sep, term,
5522 "-f", f_options[j].string);
5524 /* Print target specific options. */
5526 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
5527 if (target_switches[j].name[0] != '\0'
5528 && target_switches[j].value > 0
5529 && ((target_switches[j].value & target_flags)
5530 == target_switches[j].value))
5532 pos = print_single_switch (file, pos, max, indent, sep, term,
5533 "-m", target_switches[j].name);
5536 #ifdef TARGET_OPTIONS
5537 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
5538 if (*target_options[j].variable != NULL)
5541 sprintf (prefix, "-m%s", target_options[j].prefix);
5542 pos = print_single_switch (file, pos, max, indent, sep, term,
5543 prefix, *target_options[j].variable);
5547 fprintf (file, "%s", term);
5550 /* Record the beginning of a new source file, named FILENAME. */
5553 debug_start_source_file (filename)
5554 register char *filename ATTRIBUTE_UNUSED;
5556 #ifdef DBX_DEBUGGING_INFO
5557 if (write_symbols == DBX_DEBUG)
5558 dbxout_start_new_source_file (filename);
5560 #ifdef DWARF_DEBUGGING_INFO
5561 if (debug_info_level == DINFO_LEVEL_VERBOSE
5562 && write_symbols == DWARF_DEBUG)
5563 dwarfout_start_new_source_file (filename);
5564 #endif /* DWARF_DEBUGGING_INFO */
5565 #ifdef DWARF2_DEBUGGING_INFO
5566 if (debug_info_level == DINFO_LEVEL_VERBOSE
5567 && write_symbols == DWARF2_DEBUG)
5568 dwarf2out_start_source_file (filename);
5569 #endif /* DWARF2_DEBUGGING_INFO */
5570 #ifdef SDB_DEBUGGING_INFO
5571 if (write_symbols == SDB_DEBUG)
5572 sdbout_start_new_source_file (filename);
5576 /* Record the resumption of a source file. LINENO is the line number in
5577 the source file we are returning to. */
5580 debug_end_source_file (lineno)
5581 register unsigned lineno ATTRIBUTE_UNUSED;
5583 #ifdef DBX_DEBUGGING_INFO
5584 if (write_symbols == DBX_DEBUG)
5585 dbxout_resume_previous_source_file ();
5587 #ifdef DWARF_DEBUGGING_INFO
5588 if (debug_info_level == DINFO_LEVEL_VERBOSE
5589 && write_symbols == DWARF_DEBUG)
5590 dwarfout_resume_previous_source_file (lineno);
5591 #endif /* DWARF_DEBUGGING_INFO */
5592 #ifdef DWARF2_DEBUGGING_INFO
5593 if (debug_info_level == DINFO_LEVEL_VERBOSE
5594 && write_symbols == DWARF2_DEBUG)
5595 dwarf2out_end_source_file ();
5596 #endif /* DWARF2_DEBUGGING_INFO */
5597 #ifdef SDB_DEBUGGING_INFO
5598 if (write_symbols == SDB_DEBUG)
5599 sdbout_resume_previous_source_file ();
5603 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5604 the tail part of the directive line, i.e. the part which is past the
5605 initial whitespace, #, whitespace, directive-name, whitespace part. */
5608 debug_define (lineno, buffer)
5609 register unsigned lineno ATTRIBUTE_UNUSED;
5610 register char *buffer ATTRIBUTE_UNUSED;
5612 #ifdef DWARF_DEBUGGING_INFO
5613 if (debug_info_level == DINFO_LEVEL_VERBOSE
5614 && write_symbols == DWARF_DEBUG)
5615 dwarfout_define (lineno, buffer);
5616 #endif /* DWARF_DEBUGGING_INFO */
5617 #ifdef DWARF2_DEBUGGING_INFO
5618 if (debug_info_level == DINFO_LEVEL_VERBOSE
5619 && write_symbols == DWARF2_DEBUG)
5620 dwarf2out_define (lineno, buffer);
5621 #endif /* DWARF2_DEBUGGING_INFO */
5624 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5625 the tail part of the directive line, i.e. the part which is past the
5626 initial whitespace, #, whitespace, directive-name, whitespace part. */
5629 debug_undef (lineno, buffer)
5630 register unsigned lineno ATTRIBUTE_UNUSED;
5631 register char *buffer ATTRIBUTE_UNUSED;
5633 #ifdef DWARF_DEBUGGING_INFO
5634 if (debug_info_level == DINFO_LEVEL_VERBOSE
5635 && write_symbols == DWARF_DEBUG)
5636 dwarfout_undef (lineno, buffer);
5637 #endif /* DWARF_DEBUGGING_INFO */
5638 #ifdef DWARF2_DEBUGGING_INFO
5639 if (debug_info_level == DINFO_LEVEL_VERBOSE
5640 && write_symbols == DWARF2_DEBUG)
5641 dwarf2out_undef (lineno, buffer);
5642 #endif /* DWARF2_DEBUGGING_INFO */