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"
55 #include "basic-block.h"
59 #ifdef DWARF_DEBUGGING_INFO
63 #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
64 #include "dwarf2out.h"
67 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO)
71 #ifdef SDB_DEBUGGING_INFO
75 #ifdef XCOFF_DEBUGGING_INFO
80 /* The extra parameters substantially improve the I/O performance. */
82 vms_fopen (fname
, type
)
86 /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two
87 fixed arguments, which matches ANSI's specification but not VAXCRTL's
88 pre-ANSI implementation. This hack circumvents the mismatch problem. */
89 FILE *(*vmslib_fopen
)() = (FILE *(*)()) fopen
;
92 return (*vmslib_fopen
) (fname
, type
, "mbc=32",
93 "deq=64", "fop=tef", "shr=nil");
95 return (*vmslib_fopen
) (fname
, type
, "mbc=32");
97 #define fopen vms_fopen
100 #ifndef DEFAULT_GDB_EXTENSIONS
101 #define DEFAULT_GDB_EXTENSIONS 1
104 /* If more than one debugging type is supported, you must define
105 PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
107 This is one long line cause VAXC can't handle a \-newline. */
108 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
109 #ifndef PREFERRED_DEBUGGING_TYPE
110 You Lose
! You must define PREFERRED_DEBUGGING_TYPE
!
111 #endif /* no PREFERRED_DEBUGGING_TYPE */
112 #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
113 so the following code needn't care. */
114 #ifdef DBX_DEBUGGING_INFO
115 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
117 #ifdef SDB_DEBUGGING_INFO
118 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
120 #ifdef DWARF_DEBUGGING_INFO
121 #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
123 #ifdef DWARF2_DEBUGGING_INFO
124 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
126 #ifdef XCOFF_DEBUGGING_INFO
127 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
129 #endif /* More than one debugger format enabled. */
131 /* If still not defined, must have been because no debugging formats
133 #ifndef PREFERRED_DEBUGGING_TYPE
134 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
137 #ifndef DIR_SEPARATOR
138 #define DIR_SEPARATOR '/'
141 #if ! (defined (VMS) || defined (OS2))
142 extern char **environ
;
144 extern char *version_string
;
146 /* Carry information from ASM_DECLARE_OBJECT_NAME
147 to ASM_FINISH_DECLARE_OBJECT. */
149 extern int size_directive_output
;
150 extern tree last_assemble_variable_decl
;
152 extern void init_decl_processing ();
153 extern void init_obstacks ();
154 extern void init_tree_codes ();
155 extern void init_regs ();
156 extern void init_optabs ();
157 extern void init_stmt ();
158 extern void init_reg_sets ();
159 extern void dump_flow_info ();
160 extern void dump_sched_info ();
161 extern void dump_local_alloc ();
162 extern void regset_release_memory ();
164 extern void print_rtl ();
165 extern void print_rtl_with_bb ();
167 void rest_of_decl_compilation ();
168 void error_with_file_and_line
PVPROTO((const char *file
,
169 int line
, const char *s
, ...));
170 void error_with_decl
PVPROTO((tree decl
, const char *s
, ...));
171 void error_for_asm
PVPROTO((rtx insn
, const char *s
, ...));
172 void notice
PVPROTO((const char *s
, ...));
173 void error
PVPROTO((const char *s
, ...));
174 void fatal
PVPROTO((const char *s
, ...));
175 void warning_with_file_and_line
PVPROTO((const char *file
,
176 int line
, const char *s
, ...));
177 void warning_with_decl
PVPROTO((tree decl
, const char *s
, ...));
178 void warning
PVPROTO((const char *s
, ...));
179 void pedwarn
PVPROTO((const char *s
, ...));
180 void pedwarn_with_decl
PVPROTO((tree decl
, const char *s
, ...));
181 void pedwarn_with_file_and_line
PVPROTO((const char *file
,
182 int line
, const char *s
, ...));
183 void sorry
PVPROTO((const char *s
, ...));
184 static void set_target_switch
PROTO((const char *));
185 static const char *decl_name
PROTO((tree
, int));
186 static void vmessage
PROTO((const char *, const char *, va_list));
187 static void v_message_with_file_and_line
PROTO((const char *, int, int,
188 const char *, va_list));
189 static void v_message_with_decl
PROTO((tree
, int, const char *, va_list));
190 static void file_and_line_for_asm
PROTO((rtx
, char **, int *));
191 static void v_error_with_file_and_line
PROTO((const char *, int,
192 const char *, va_list));
193 static void v_error_with_decl
PROTO((tree
, const char *, va_list));
194 static void v_error_for_asm
PROTO((rtx
, const char *, va_list));
195 static void verror
PROTO((const char *, va_list));
196 static void vfatal
PROTO((const char *, va_list)) ATTRIBUTE_NORETURN
;
197 static void v_warning_with_file_and_line
PROTO ((const char *, int,
198 const char *, va_list));
199 static void v_warning_with_decl
PROTO((tree
, const char *, va_list));
200 static void v_warning_for_asm
PROTO((rtx
, const char *, va_list));
201 static void vwarning
PROTO((const char *, va_list));
202 static void vpedwarn
PROTO((const char *, va_list));
203 static void v_pedwarn_with_decl
PROTO((tree
, const char *, va_list));
204 static void v_pedwarn_with_file_and_line
PROTO((const char *, int,
205 const char *, va_list));
206 static void vsorry
PROTO((const char *, va_list));
207 static void float_signal
PROTO((int)) ATTRIBUTE_NORETURN
;
208 static void pipe_closed
PROTO((int)) ATTRIBUTE_NORETURN
;
209 #ifdef ASM_IDENTIFY_LANGUAGE
210 /* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */
211 static void output_lang_identify
PROTO((FILE *)) ATTRIBUTE_UNUSED
;
213 static void open_dump_file
PROTO((const char *, const char *));
214 static void close_dump_file
PROTO((void (*) (FILE *, rtx
), rtx
));
215 static void dump_rtl
PROTO((const char *, tree
, void (*) (FILE *, rtx
), rtx
));
216 static void clean_dump_file
PROTO((const char *));
217 static void compile_file
PROTO((char *));
218 static void display_help
PROTO ((void));
220 static void print_version
PROTO((FILE *, const char *));
221 static int print_single_switch
PROTO((FILE *, int, int, const char *,
222 const char *, const char *,
223 const char *, const char *));
224 static void print_switch_values
PROTO((FILE *, int, int, const char *,
225 const char *, const char *));
227 void print_rtl_graph_with_bb
PROTO ((const char *, const char *, rtx
));
228 void clean_graph_dump_file
PROTO ((const char *, const char *));
229 void finish_graph_dump_file
PROTO ((const char *, const char *));
230 /* Length of line when printing switch values. */
233 /* Name of program invoked, sans directories. */
237 /* Copy of arguments to main. */
241 /* Name of current original source file (what was input to cpp).
242 This comes from each #-command in the actual input. */
244 char *input_filename
;
246 /* Name of top-level original source file (what was input to cpp).
247 This comes from the #-command at the beginning of the actual input.
248 If there isn't any there, then this is the cc1 input file name. */
250 char *main_input_filename
;
252 /* Current line number in real source file. */
256 /* Nonzero if it is unsafe to create any new pseudo registers. */
259 /* Stack of currently pending input files. */
261 struct file_stack
*input_file_stack
;
263 /* Incremented on each change to input_file_stack. */
264 int input_file_stack_tick
;
266 /* Name to use as base of names for dump output files. */
268 const char *dump_base_name
;
270 /* Bit flags that specify the machine subtype we are compiling for.
271 Bits are tested using macros TARGET_... defined in the tm.h file
272 and set by `-m...' switches. Must be defined in rtlanal.c. */
274 extern int target_flags
;
276 /* Flags saying which kinds of debugging dump have been requested. */
279 int rtl_dump_and_exit
= 0;
280 int jump_opt_dump
= 0;
281 int addressof_dump
= 0;
286 int branch_prob_dump
= 0;
288 int combine_dump
= 0;
289 int regmove_dump
= 0;
291 int local_reg_dump
= 0;
292 int global_reg_dump
= 0;
294 int peephole2_dump
= 0;
296 int jump2_opt_dump
= 0;
298 int dbr_sched_dump
= 0;
300 int flag_print_asm_name
= 0;
302 int stack_reg_dump
= 0;
304 #ifdef MACHINE_DEPENDENT_REORG
305 int mach_dep_reorg_dump
= 0;
307 enum graph_dump_types graph_dump_format
;
309 /* Name for output file of assembly code, specified with -o. */
313 /* Value of the -G xx switch, and whether it was passed or not. */
317 /* Type(s) of debugging information we are producing (if any).
318 See flags.h for the definitions of the different possible
319 types of debugging information. */
320 enum debug_info_type write_symbols
= NO_DEBUG
;
322 /* Level of debugging information we are producing. See flags.h
323 for the definitions of the different possible levels. */
324 enum debug_info_level debug_info_level
= DINFO_LEVEL_NONE
;
326 /* Nonzero means use GNU-only extensions in the generated symbolic
327 debugging information. */
328 /* Currently, this only has an effect when write_symbols is set to
329 DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
330 int use_gnu_debug_info_extensions
= 0;
332 /* Nonzero means do optimizations. -O.
333 Particular numeric values stand for particular amounts of optimization;
334 thus, -O2 stores 2 here. However, the optimizations beyond the basic
335 ones are not controlled directly by this variable. Instead, they are
336 controlled by individual `flag_...' variables that are defaulted
337 based on this variable. */
341 /* Nonzero means optimize for size. -Os.
342 The only valid values are zero and non-zero. When optimize_size is
343 non-zero, optimize defaults to 2, but certain individual code
344 bloating optimizations are disabled. */
346 int optimize_size
= 0;
348 /* Number of error messages and warning messages so far. */
351 int warningcount
= 0;
354 /* Pointer to function to compute the name to use to print a declaration.
355 DECL is the declaration in question.
356 VERBOSITY determines what information will be printed:
357 0: DECL_NAME, demangled as necessary.
358 1: and scope information.
359 2: and any other information that might be interesting, such as function
360 parameter types in C++. */
362 const char *(*decl_printable_name
) PROTO ((tree
, int));
364 /* Pointer to function to compute rtl for a language-specific tree code. */
366 typedef rtx (*lang_expand_expr_t
)
367 PROTO ((union tree_node
*, rtx
, enum machine_mode
,
368 enum expand_modifier modifier
));
370 lang_expand_expr_t lang_expand_expr
= 0;
372 tree (*lang_expand_constant
) PROTO((tree
)) = 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 the front end generally wants `errno' maintained by math
558 operations, like built-in SQRT, unless overridden by flag_fast_math. */
560 int flag_errno_math
= 1;
562 /* 0 means straightforward implementation of complex divide acceptable.
563 1 means wide ranges of inputs must work for complex divide.
564 2 means C9X-like requirements for complex divide (not yet implemented). */
566 int flag_complex_divide_method
= 0;
568 /* Nonzero means all references through pointers are volatile. */
572 /* Nonzero means treat all global and extern variables as volatile. */
574 int flag_volatile_global
;
576 /* Nonzero means treat all static variables as volatile. */
578 int flag_volatile_static
;
580 /* Nonzero means just do syntax checking; don't output anything. */
582 int flag_syntax_only
= 0;
584 /* Nonzero means perform global cse. */
586 static int flag_gcse
;
588 /* Nonzero means to rerun cse after loop optimization. This increases
589 compilation time about 20% and picks up a few more common expressions. */
591 static int flag_rerun_cse_after_loop
;
593 /* Nonzero means to run loop optimizations twice. */
595 int flag_rerun_loop_opt
;
597 /* Nonzero for -finline-functions: ok to inline functions that look like
598 good inline candidates. */
600 int flag_inline_functions
;
602 /* Nonzero for -fkeep-inline-functions: even if we make a function
603 go inline everywhere, keep its definition around for debugging
606 int flag_keep_inline_functions
;
608 /* Nonzero means that functions will not be inlined. */
612 /* Nonzero means that we should emit static const variables
613 regardless of whether or not optimization is turned on. */
615 int flag_keep_static_consts
= 1;
617 /* Nonzero means we should be saving declaration info into a .X file. */
619 int flag_gen_aux_info
= 0;
621 /* Specified name of aux-info file. */
623 static char *aux_info_file_name
;
625 /* Nonzero means make the text shared if supported. */
627 int flag_shared_data
;
629 /* Nonzero means schedule into delayed branch slots if supported. */
631 int flag_delayed_branch
;
633 /* Nonzero if we are compiling pure (sharable) code.
634 Value is 1 if we are doing reasonable (i.e. simple
635 offset into offset table) pic. Value is 2 if we can
636 only perform register offsets. */
640 /* Nonzero means generate extra code for exception handling and enable
641 exception handling. */
645 /* Nonzero means use the new model for exception handling. Replaces
646 -DNEW_EH_MODEL as a compile option. */
648 int flag_new_exceptions
= 1;
650 /* Nonzero means don't place uninitialized global data in common storage
655 /* Nonzero means pretend it is OK to examine bits of target floats,
656 even if that isn't true. The resulting code will have incorrect constants,
657 but the same series of instructions that the native compiler would make. */
659 int flag_pretend_float
;
661 /* Nonzero means change certain warnings into errors.
662 Usually these are warnings about failure to conform to some standard. */
664 int flag_pedantic_errors
= 0;
666 /* flag_schedule_insns means schedule insns within basic blocks (before
668 flag_schedule_insns_after_reload means schedule insns after
671 int flag_schedule_insns
= 0;
672 int flag_schedule_insns_after_reload
= 0;
674 /* The following flags have effect only for scheduling before register
677 flag_schedule_interblock means schedule insns accross basic blocks.
678 flag_schedule_speculative means allow speculative motion of non-load insns.
679 flag_schedule_speculative_load means allow speculative motion of some
681 flag_schedule_speculative_load_dangerous allows speculative motion of more
684 int flag_schedule_interblock
= 1;
685 int flag_schedule_speculative
= 1;
686 int flag_schedule_speculative_load
= 0;
687 int flag_schedule_speculative_load_dangerous
= 0;
689 /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
690 by a cheaper branch, on a count register. */
691 int flag_branch_on_count_reg
;
693 /* -finhibit-size-directive inhibits output of .size for ELF.
694 This is used only for compiling crtstuff.c,
695 and it may be extended to other effects
696 needed for crtstuff.c on other systems. */
697 int flag_inhibit_size_directive
= 0;
699 /* -fverbose-asm causes extra 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 -fno-verbose-asm, the default, causes the extra information
704 to be omitted and is useful when comparing two assembler files. */
706 int flag_verbose_asm
= 0;
708 /* -dA causes debug commentary information to be produced in
709 the generated assembly code (to make it more readable). This option
710 is generally only of use to those who actually need to read the
711 generated assembly code (perhaps while debugging the compiler itself).
712 Currently, this switch is only used by dwarfout.c; however, it is intended
713 to be a catchall for printing debug information in the assembler file. */
715 int flag_debug_asm
= 0;
717 /* -fgnu-linker specifies use of the GNU linker for initializations.
718 (Or, more generally, a linker that handles initializations.)
719 -fno-gnu-linker says that collect2 will be used. */
721 int flag_gnu_linker
= 0;
723 int flag_gnu_linker
= 1;
726 /* Tag all structures with __attribute__(packed) */
727 int flag_pack_struct
= 0;
729 /* Emit code to check for stack overflow; also may cause large objects
730 to be allocated dynamically. */
731 int flag_stack_check
;
733 /* -fcheck-memory-usage causes extra code to be generated in order to check
734 memory accesses. This is used by a detector of bad memory accesses such
736 int flag_check_memory_usage
= 0;
738 /* -fprefix-function-name causes function name to be prefixed. This
739 can be used with -fcheck-memory-usage to isolate code compiled with
740 -fcheck-memory-usage. */
741 int flag_prefix_function_name
= 0;
743 /* 0 if pointer arguments may alias each other. True in C.
744 1 if pointer arguments may not alias each other but may alias
746 2 if pointer arguments may not alias each other and may not
747 alias global variables. True in Fortran.
748 This defaults to 0 for C. */
749 int flag_argument_noalias
= 0;
751 /* Nonzero if we should do (language-dependent) alias analysis.
752 Typically, this analysis will assume that expressions of certain
753 types do not alias expressions of certain other types. Only used
754 if alias analysis (in general) is enabled. */
755 int flag_strict_aliasing
= 0;
757 /* Instrument functions with calls at entry and exit, for profiling. */
758 int flag_instrument_function_entry_exit
= 0;
760 /* Nonzero means ignore `#ident' directives. 0 means handle them.
761 On SVR4 targets, it also controls whether or not to emit a
762 string identifying the compiler. */
764 int flag_no_ident
= 0;
766 /* This will perform a peephole pass before sched2. */
767 int flag_peephole2
= 0;
769 /* Values of the -falign-* flags: how much to align labels in code.
770 0 means `use default', 1 means `don't align'.
771 For each variable, there is an _log variant which is the power
772 of two not less than the variable, for .align output. */
779 int align_labels_log
;
781 int align_functions_log
;
783 /* Table of supported debugging formats. */
787 /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a
788 constant expression, we use NO_DEBUG in its place. */
789 enum debug_info_type debug_type
;
790 int use_extensions_p
;
791 const char * description
;
795 { "g", NO_DEBUG
, DEFAULT_GDB_EXTENSIONS
,
796 "Generate default debug format output" },
797 { "ggdb", NO_DEBUG
, 1, "Generate default extended debug format output" },
798 #ifdef DBX_DEBUGGING_INFO
799 { "gstabs", DBX_DEBUG
, 0, "Generate STABS format debug output" },
800 { "gstabs+", DBX_DEBUG
, 1, "Generate extended STABS format debug output" },
802 #ifdef DWARF_DEBUGGING_INFO
803 { "gdwarf", DWARF_DEBUG
, 0, "Generate DWARF-1 format debug output"},
804 { "gdwarf+", DWARF_DEBUG
, 1,
805 "Generated extended DWARF-1 format debug output" },
807 #ifdef DWARF2_DEBUGGING_INFO
808 { "gdwarf-2", DWARF2_DEBUG
, 0, "Enable DWARF-2 debug output" },
810 #ifdef XCOFF_DEBUGGING_INFO
811 { "gxcoff", XCOFF_DEBUG
, 0, "Generate XCOFF format debug output" },
812 { "gxcoff+", XCOFF_DEBUG
, 1, "Generate extended XCOFF format debug output" },
814 #ifdef SDB_DEBUGGING_INFO
815 { "gcoff", SDB_DEBUG
, 0, "Generate COFF format debug output" },
825 const char * description
;
827 lang_independent_options
;
829 /* Add or remove a leading underscore from user symbols. */
830 int flag_leading_underscore
= -1;
832 /* The user symbol prefix after having resolved same. */
833 const char *user_label_prefix
;
835 /* A default for same. */
836 #ifndef USER_LABEL_PREFIX
837 #define USER_LABEL_PREFIX ""
840 /* Table of language-independent -f options.
841 STRING is the option name. VARIABLE is the address of the variable.
842 ON_VALUE is the value to store in VARIABLE
843 if `-fSTRING' is seen as an option.
844 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
846 lang_independent_options f_options
[] =
848 {"float-store", &flag_float_store
, 1,
849 "Do not store floats in registers" },
850 {"volatile", &flag_volatile
, 1,
851 "Consider all mem refs through pointers as volatile"},
852 {"volatile-global", &flag_volatile_global
, 1,
853 "Consider all mem refs to global data to be volatile" },
854 {"volatile-static", &flag_volatile_static
, 1,
855 "Consider all mem refs to static data to be volatile" },
856 {"defer-pop", &flag_defer_pop
, 1,
857 "Defer popping functions args from stack until later" },
858 {"omit-frame-pointer", &flag_omit_frame_pointer
, 1,
859 "When possible do not generate stack frames"},
860 {"cse-follow-jumps", &flag_cse_follow_jumps
, 1,
861 "When running CSE, follow jumps to their targets" },
862 {"cse-skip-blocks", &flag_cse_skip_blocks
, 1,
863 "When running CSE, follow conditional jumps" },
864 {"expensive-optimizations", &flag_expensive_optimizations
, 1,
865 "Perform a number of minor, expensive optimisations" },
866 {"thread-jumps", &flag_thread_jumps
, 1,
867 "Perform jump threading optimisations"},
868 {"strength-reduce", &flag_strength_reduce
, 1,
869 "Perform strength reduction optimisations" },
870 {"unroll-loops", &flag_unroll_loops
, 1,
871 "Perform loop unrolling when iteration count is known" },
872 {"unroll-all-loops", &flag_unroll_all_loops
, 1,
873 "Perform loop unrolling for all loops" },
874 {"move-all-movables", &flag_move_all_movables
, 1,
875 "Force all loop invariant computations out of loops" },
876 {"reduce-all-givs", &flag_reduce_all_givs
, 1,
877 "Strength reduce all loop general induction variables" },
878 {"writable-strings", &flag_writable_strings
, 1,
879 "Store strings in writable data section" },
880 {"peephole", &flag_no_peephole
, 0,
881 "Enable machine specific peephole optimisations" },
882 {"force-mem", &flag_force_mem
, 1,
883 "Copy memory operands into registers before using" },
884 {"force-addr", &flag_force_addr
, 1,
885 "Copy memory address constants into regs before using" },
886 {"function-cse", &flag_no_function_cse
, 0,
887 "Allow function addresses to be held in registers" },
888 {"inline-functions", &flag_inline_functions
, 1,
889 "Integrate simple functions into their callers" },
890 {"keep-inline-functions", &flag_keep_inline_functions
, 1,
891 "Generate code for funcs even if they are fully inlined" },
892 {"inline", &flag_no_inline
, 0,
893 "Pay attention to the 'inline' keyword"},
894 {"keep-static-consts", &flag_keep_static_consts
, 1,
895 "Emit static const variables even if they are not used" },
896 {"syntax-only", &flag_syntax_only
, 1,
897 "Check for syntax errors, then stop" },
898 {"shared-data", &flag_shared_data
, 1,
899 "Mark data as shared rather than private" },
900 {"caller-saves", &flag_caller_saves
, 1,
901 "Enable saving registers around function calls" },
902 {"pcc-struct-return", &flag_pcc_struct_return
, 1,
903 "Return 'short' aggregates in memory, not registers" },
904 {"reg-struct-return", &flag_pcc_struct_return
, 0,
905 "Return 'short' aggregates in registers" },
906 {"delayed-branch", &flag_delayed_branch
, 1,
907 "Attempt to fill delay slots of branch instructions" },
908 {"gcse", &flag_gcse
, 1,
909 "Perform the global common subexpression elimination" },
910 {"rerun-cse-after-loop", &flag_rerun_cse_after_loop
, 1,
911 "Run CSE pass after loop optimisations"},
912 {"rerun-loop-opt", &flag_rerun_loop_opt
, 1,
913 "Run the loop optimiser twice"},
914 {"pretend-float", &flag_pretend_float
, 1,
915 "Pretend that host and target use the same FP format"},
916 {"schedule-insns", &flag_schedule_insns
, 1,
917 "Reschedule instructions to avoid pipeline stalls"},
918 {"schedule-insns2", &flag_schedule_insns_after_reload
, 1,
919 "Run two passes of the instruction scheduler"},
920 {"sched-interblock",&flag_schedule_interblock
, 1,
921 "Enable scheduling across basic blocks" },
922 {"sched-spec",&flag_schedule_speculative
, 1,
923 "Allow speculative motion of non-loads" },
924 {"sched-spec-load",&flag_schedule_speculative_load
, 1,
925 "Allow speculative motion of some loads" },
926 {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous
, 1,
927 "Allow speculative motion of more loads" },
928 {"branch-count-reg",&flag_branch_on_count_reg
, 1,
929 "Replace add,compare,branch with branch on count reg"},
930 {"pic", &flag_pic
, 1,
931 "Generate position independent code, if possible"},
932 {"PIC", &flag_pic
, 2, ""},
933 {"exceptions", &flag_exceptions
, 1,
934 "Enable exception handling" },
935 {"new-exceptions", &flag_new_exceptions
, 1,
936 "Use the new model for exception handling" },
937 {"sjlj-exceptions", &exceptions_via_longjmp
, 1,
938 "Use setjmp/longjmp to handle exceptions" },
939 {"asynchronous-exceptions", &asynchronous_exceptions
, 1,
940 "Support asynchronous exceptions" },
941 {"profile-arcs", &profile_arc_flag
, 1,
942 "Insert arc based program profiling code" },
943 {"test-coverage", &flag_test_coverage
, 1,
944 "Create data files needed by gcov" },
945 {"branch-probabilities", &flag_branch_probabilities
, 1,
946 "Use profiling information for branch probabilities" },
947 {"fast-math", &flag_fast_math
, 1,
948 "Improve FP speed by violating ANSI & IEEE rules" },
949 {"common", &flag_no_common
, 0,
950 "Do not put unitialised globals in the common section" },
951 {"inhibit-size-directive", &flag_inhibit_size_directive
, 1,
952 "Do not generate .size directives" },
953 {"function-sections", &flag_function_sections
, 1,
954 "place each function into its own section" },
955 {"data-sections", &flag_data_sections
, 1,
956 "place data items into their own section" },
957 {"verbose-asm", &flag_verbose_asm
, 1,
958 "Add extra commentry to assembler output"},
959 {"gnu-linker", &flag_gnu_linker
, 1,
960 "Output GNU ld formatted global initialisers"},
961 {"regmove", &flag_regmove
, 1,
962 "Enables a register move optimisation"},
963 {"optimize-register-move", &flag_regmove
, 1,
964 "Do the full regmove optimization pass"},
965 {"pack-struct", &flag_pack_struct
, 1,
966 "Pack structure members together without holes" },
967 {"stack-check", &flag_stack_check
, 1,
968 "Insert stack checking code into the program" },
969 {"argument-alias", &flag_argument_noalias
, 0,
970 "Specify that arguments may alias each other & globals"},
971 {"argument-noalias", &flag_argument_noalias
, 1,
972 "Assume arguments may alias globals but not each other"},
973 {"argument-noalias-global", &flag_argument_noalias
, 2,
974 "Assume arguments do not alias each other or globals" },
975 {"strict-aliasing", &flag_strict_aliasing
, 1,
976 "Assume strict aliasing rules apply" },
977 {"align-loops", &align_loops
, 0,
978 "Align the start of loops" },
979 {"align-jumps", &align_jumps
, 0,
980 "Align labels which are only reached by jumping" },
981 {"align-labels", &align_labels
, 0,
982 "Align all labels" },
983 {"align-functions", &align_functions
, 0,
984 "Align the start of functions" },
985 {"check-memory-usage", &flag_check_memory_usage
, 1,
986 "Generate code to check every memory access" },
987 {"prefix-function-name", &flag_prefix_function_name
, 1,
988 "Add a prefix to all function names" },
989 {"dump-unnumbered", &flag_dump_unnumbered
, 1,
990 "Suppress output of instruction numbers and line number notes in debugging dumps"},
991 {"instrument-functions", &flag_instrument_function_entry_exit
, 1,
992 "Instrument function entry/exit with profiling calls"},
993 {"leading-underscore", &flag_leading_underscore
, 1,
994 "External symbols have a leading underscore" },
995 {"ident", &flag_no_ident
, 0,
996 "Process #ident directives"},
997 { "peephole2", &flag_peephole2
, 1,
998 "Enables an rtl peephole pass run before sched2" }
1001 #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0]))
1003 /* Table of language-specific options. */
1005 static struct lang_opt
1007 const char * option
;
1008 const char * description
;
1010 documented_lang_options
[] =
1012 /* In order not to overload the --help output, the convention
1013 used here is to only describe those options which are not
1014 enabled by default. */
1016 { "-ansi", "Compile just for ANSI C" },
1017 { "-fallow-single-precision",
1018 "Do not promote floats to double if using -traditional" },
1019 { "-std= ", "Determine language standard"},
1021 { "-fsigned-bitfields", "" },
1022 { "-funsigned-bitfields","Make bitfields by unsigned by default" },
1023 { "-fno-signed-bitfields", "" },
1024 { "-fno-unsigned-bitfields","" },
1025 { "-fsigned-char", "Make 'char' be signed by default"},
1026 { "-funsigned-char", "Make 'char' be unsigned by default"},
1027 { "-fno-signed-char", "" },
1028 { "-fno-unsigned-char", "" },
1030 { "-ftraditional", "" },
1031 { "-traditional", "Attempt to support traditional K&R style C"},
1032 { "-fnotraditional", "" },
1033 { "-fno-traditional", "" },
1036 { "-fno-asm", "Do not recognise the 'asm' keyword" },
1037 { "-fbuiltin", "" },
1038 { "-fno-builtin", "Do not recognise any built in functions" },
1039 { "-fhosted", "Assume normal C execution environment" },
1040 { "-fno-hosted", "" },
1042 "Assume that standard libraries & main might not exist" },
1043 { "-fno-freestanding", "" },
1044 { "-fcond-mismatch", "Allow different types as args of ? operator"},
1045 { "-fno-cond-mismatch", "" },
1046 { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" },
1047 { "-fno-dollars-in-identifiers", "" },
1048 { "-fpreprocessed", "" },
1049 { "-fno-preprocessed", "" },
1050 { "-fshort-double", "Use the same size for double as for float" },
1051 { "-fno-short-double", "" },
1052 { "-fshort-enums", "Use the smallest fitting integer to hold enums"},
1053 { "-fno-short-enums", "" },
1055 { "-Wall", "Enable most warning messages" },
1056 { "-Wbad-function-cast",
1057 "Warn about casting functions to incompatible types" },
1058 { "-Wno-bad-function-cast", "" },
1059 { "-Wmissing-noreturn",
1060 "Warn about functions which might be candidates for attribute noreturn" },
1061 { "-Wno-missing-noreturn", "" },
1062 { "-Wcast-qual", "Warn about casts which discard qualifiers"},
1063 { "-Wno-cast-qual", "" },
1064 { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"},
1065 { "-Wno-char-subscripts", "" },
1066 { "-Wcomment", "Warn if nested comments are detected" },
1067 { "-Wno-comment", "" },
1068 { "-Wcomments", "Warn if nested comments are detected" },
1069 { "-Wno-comments", "" },
1070 { "-Wconversion", "Warn about possibly confusing type conversions" },
1071 { "-Wno-conversion", "" },
1072 { "-Wformat", "Warn about printf format anomalies" },
1073 { "-Wno-format", "" },
1074 { "-Wimplicit-function-declaration",
1075 "Warn about implicit function declarations" },
1076 { "-Wno-implicit-function-declaration", "" },
1077 { "-Werror-implicit-function-declaration", "" },
1078 { "-Wimplicit-int", "Warn when a declaration does not specify a type" },
1079 { "-Wno-implicit-int", "" },
1080 { "-Wimplicit", "" },
1081 { "-Wno-implicit", "" },
1082 { "-Wimport", "Warn about the use of the #import directive" },
1083 { "-Wno-import", "" },
1084 { "-Wlong-long","" },
1085 { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" },
1086 { "-Wmain", "Warn about suspicious declarations of main" },
1087 { "-Wno-main", "" },
1088 { "-Wmissing-braces",
1089 "Warn about possibly missing braces around initialisers" },
1090 { "-Wno-missing-braces", "" },
1091 { "-Wmissing-declarations",
1092 "Warn about global funcs without previous declarations"},
1093 { "-Wno-missing-declarations", "" },
1094 { "-Wmissing-prototypes", "Warn about global funcs without prototypes" },
1095 { "-Wno-missing-prototypes", "" },
1096 { "-Wmultichar", "Warn about use of multicharacter literals"},
1097 { "-Wno-multichar", "" },
1098 { "-Wnested-externs", "Warn about externs not at file scope level" },
1099 { "-Wno-nested-externs", "" },
1100 { "-Wparentheses", "Warn about possible missing parentheses" },
1101 { "-Wno-parentheses", "" },
1102 { "-Wpointer-arith", "Warn about function pointer arithmetic" },
1103 { "-Wno-pointer-arith", "" },
1104 { "-Wredundant-decls",
1105 "Warn about multiple declarations of the same object" },
1106 { "-Wno-redundant-decls", "" },
1107 { "-Wsign-compare", "Warn about signed/unsigned comparisons" },
1108 { "-Wno-sign-compare", "" },
1109 { "-Wunknown-pragmas", "Warn about unrecognised pragmas" },
1110 { "-Wno-unknown-pragmas", "" },
1111 { "-Wstrict-prototypes", "Warn about non-prototyped function decls" },
1112 { "-Wno-strict-prototypes", "" },
1113 { "-Wtraditional", "Warn about constructs whose meaning change in ANSI C"},
1114 { "-Wno-traditional", "" },
1115 { "-Wtrigraphs", "Warn when trigraphs are encountered" },
1116 { "-Wno-trigraphs", "" },
1118 { "-Wno-undef", "" },
1119 { "-Wwrite-strings", "Mark strings as 'const char *'"},
1120 { "-Wno-write-strings", "" },
1122 /* These are for languages with USE_CPPLIB. */
1123 /* These options are already documented in cpplib.c */
1129 { "-MD", "Print dependencies to FILE.d" },
1130 { "-MMD", "Print dependencies to FILE.d" },
1131 { "-M", "Print dependencies to stdout" },
1132 { "-MM", "Print dependencies to stdout" },
1133 #endif /* USE_CPPLIB */
1136 { "-idirafter", "" },
1141 { "-iwithprefix", "" },
1142 { "-iwithprefixbefore", "" },
1144 { "-lang-c89", "" },
1145 { "-lang-c++", "" },
1147 { "-nostdinc", "" },
1148 { "-nostdinc++", "" },
1149 { "-trigraphs", "" },
1152 #define DEFINE_LANG_NAME(NAME) { NULL, NAME },
1154 /* These are for obj c. */
1155 DEFINE_LANG_NAME ("Objective C")
1157 { "-lang-objc", "" },
1158 { "-gen-decls", "Dump decls to a .decl file" },
1159 { "-fgnu-runtime", "Generate code for GNU runtime environment" },
1160 { "-fno-gnu-runtime", "" },
1161 { "-fnext-runtime", "Generate code for NeXT runtime environment" },
1162 { "-fno-next-runtime", "" },
1163 { "-Wselector", "Warn if a selector has multiple methods" },
1164 { "-Wno-selector", "" },
1165 { "-Wprotocol", "" },
1166 { "-Wno-protocol", "Do not warn if inherited methods are unimplemented"},
1167 { "-print-objc-runtime-info",
1168 "Generate C header of platform specific features" },
1170 #include "options.h"
1174 /* Here is a table, controlled by the tm.h file, listing each -m switch
1175 and which bits in `target_switches' it should set or clear.
1176 If VALUE is positive, it is bits to set.
1177 If VALUE is negative, -VALUE is bits to clear.
1178 (The sign bit is not used so there is no confusion.) */
1184 const char * description
;
1186 target_switches
[] = TARGET_SWITCHES
;
1188 /* This table is similar, but allows the switch to have a value. */
1190 #ifdef TARGET_OPTIONS
1193 const char * prefix
;
1194 const char ** variable
;
1195 const char * description
;
1197 target_options
[] = TARGET_OPTIONS
;
1200 /* Options controlling warnings */
1202 /* Don't print warning messages. -w. */
1204 int inhibit_warnings
= 0;
1206 /* Print various extra warnings. -W. */
1208 int extra_warnings
= 0;
1210 /* Treat warnings as errors. -Werror. */
1212 int warnings_are_errors
= 0;
1214 /* Nonzero to warn about unused local variables. */
1218 /* Nonzero to warn about code which is never reached. */
1220 int warn_notreached
;
1222 /* Nonzero to warn about variables used before they are initialized. */
1224 int warn_uninitialized
;
1226 /* Nonzero means warn about all declarations which shadow others. */
1230 /* Warn if a switch on an enum fails to have a case for every enum value. */
1234 /* Nonzero means warn about function definitions that default the return type
1235 or that use a null return and have a return-type other than void. */
1237 int warn_return_type
;
1239 /* Nonzero means warn about pointer casts that increase the required
1240 alignment of the target type (and might therefore lead to a crash
1241 due to a misaligned access). */
1243 int warn_cast_align
;
1245 /* Nonzero means warn about any identifiers that match in the first N
1246 characters. The value N is in `id_clash_len'. */
1249 unsigned id_clash_len
;
1251 /* Nonzero means warn about any objects definitions whose size is larger
1252 than N bytes. Also want about function definitions whose returned
1253 values are larger than N bytes. The value N is in `larger_than_size'. */
1255 int warn_larger_than
;
1256 unsigned larger_than_size
;
1258 /* Nonzero means warn if inline function is too large. */
1262 /* Warn if a function returns an aggregate,
1263 since there are often incompatible calling conventions for doing this. */
1265 int warn_aggregate_return
;
1267 /* Likewise for -W. */
1269 lang_independent_options W_options
[] =
1271 {"unused", &warn_unused
, 1, "Warn when a variable is unused" },
1272 {"error", &warnings_are_errors
, 1, ""},
1273 {"shadow", &warn_shadow
, 1, "Warn when one local variable shadows another" },
1274 {"switch", &warn_switch
, 1,
1275 "Warn about enumerated switches missing a specific case" },
1276 {"aggregate-return", &warn_aggregate_return
, 1,
1277 "Warn about returning structures, unions or arrays" },
1278 {"cast-align", &warn_cast_align
, 1,
1279 "Warn about pointer casts which increase alignment" },
1280 {"unreachable-code", &warn_notreached
, 1,
1281 "Warn about code that will never be executed" },
1282 {"uninitialized", &warn_uninitialized
, 1,
1283 "Warn about unitialized automatic variables"},
1284 {"inline", &warn_inline
, 1,
1285 "Warn when an inlined function cannot be inlined"}
1288 /* Output files for assembler code (real compiler output)
1289 and debugging dumps. */
1292 FILE *aux_info_file
;
1293 FILE *rtl_dump_file
= NULL
;
1295 /* Decode the string P as an integral parameter.
1296 If the string is indeed an integer return its numeric value else
1297 issue an Invalid Option error for the option PNAME and return DEFVAL.
1298 If PNAME is zero just return DEFVAL, do not call error. */
1301 read_integral_parameter (p
, pname
, defval
)
1306 const char *endp
= p
;
1310 if (*endp
>= '0' && *endp
<= '9')
1319 error ("Invalid option `%s'", pname
);
1327 /* Time accumulators, to count the total time spent in various passes. */
1331 int integration_time
;
1337 int branch_prob_time
;
1342 int local_alloc_time
;
1343 int global_alloc_time
;
1349 int shorten_branch_time
;
1357 /* Return time used so far, in microseconds. */
1367 #else /* not BeOS */
1368 #if defined (_WIN32) && !defined (__CYGWIN__)
1372 return (clock() * 1000);
1373 #else /* not _WIN32 */
1379 tick
= 1000000 / sysconf(_SC_CLK_TCK
);
1381 return (tms
.tms_utime
+ tms
.tms_stime
) * tick
;
1387 # if HAVE_SYSCONF && defined _SC_CLK_TCK
1388 # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */
1391 # define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */
1393 # define TICKS_PER_SECOND HZ /* traditional UNIX */
1397 return (tms
.tms_utime
+ tms
.tms_stime
) * (1000000 / TICKS_PER_SECOND
);
1402 struct rusage rusage
;
1403 getrusage (0, &rusage
);
1404 return (rusage
.ru_utime
.tv_sec
* 1000000 + rusage
.ru_utime
.tv_usec
1405 + rusage
.ru_stime
.tv_sec
* 1000000 + rusage
.ru_stime
.tv_usec
);
1412 int proc_system_time
;
1413 int child_user_time
;
1414 int child_system_time
;
1416 times ((void *) &vms_times
);
1417 return (vms_times
.proc_user_time
+ vms_times
.proc_system_time
) * 10000;
1421 #endif /* _SC_CLK_TCK */
1423 #endif /* __BEOS__ */
1426 #define TIMEVAR(VAR, BODY) \
1427 do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
1430 print_time (str
, total
)
1435 "time in %s: %d.%06d (%.0f%%)\n",
1436 str
, total
/ 1000000, total
% 1000000,
1437 (double)total
/ (double)all_time
* 100.0);
1440 /* Count an error or warning. Return 1 if the message should be printed. */
1443 count_error (warningp
)
1446 if (warningp
&& inhibit_warnings
)
1449 if (warningp
&& !warnings_are_errors
)
1453 static int warning_message
= 0;
1455 if (warningp
&& !warning_message
)
1457 notice ("%s: warnings being treated as errors\n", progname
);
1458 warning_message
= 1;
1466 /* Print a fatal error message. NAME is the text.
1467 Also include a system error message based on `errno'. */
1470 pfatal_with_name (name
)
1473 fprintf (stderr
, "%s: ", progname
);
1475 exit (FATAL_EXIT_CODE
);
1479 fatal_io_error (name
)
1482 notice ("%s: %s: I/O error\n", progname
, name
);
1483 exit (FATAL_EXIT_CODE
);
1486 /* This is the default decl_printable_name function. */
1489 decl_name (decl
, verbosity
)
1491 int verbosity ATTRIBUTE_UNUSED
;
1493 return IDENTIFIER_POINTER (DECL_NAME (decl
));
1496 static int need_error_newline
;
1498 /* Function of last error message;
1499 more generally, function such that if next error message is in it
1500 then we don't have to mention the function name. */
1501 static tree last_error_function
= NULL
;
1503 /* Used to detect when input_file_stack has changed since last described. */
1504 static int last_error_tick
;
1506 /* Called when the start of a function definition is parsed,
1507 this function prints on stderr the name of the function. */
1510 announce_function (decl
)
1515 if (rtl_dump_and_exit
)
1516 fprintf (stderr
, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl
)));
1518 fprintf (stderr
, " %s", (*decl_printable_name
) (decl
, 2));
1520 need_error_newline
= 1;
1521 last_error_function
= current_function_decl
;
1525 /* The default function to print out name of current function that caused
1529 default_print_error_function (file
)
1532 if (last_error_function
!= current_function_decl
)
1535 fprintf (stderr
, "%s: ", file
);
1537 if (current_function_decl
== NULL
)
1538 notice ("At top level:\n");
1540 notice ((TREE_CODE (TREE_TYPE (current_function_decl
)) == METHOD_TYPE
1541 ? "In method `%s':\n"
1542 : "In function `%s':\n"),
1543 (*decl_printable_name
) (current_function_decl
, 2));
1545 last_error_function
= current_function_decl
;
1549 /* Called by report_error_function to print out function name.
1550 * Default may be overridden by language front-ends. */
1552 void (*print_error_function
) PROTO((const char *)) =
1553 default_print_error_function
;
1555 /* Prints out, if necessary, the name of the current function
1556 that caused an error. Called from all error and warning functions.
1557 We ignore the FILE parameter, as it cannot be relied upon. */
1560 report_error_function (file
)
1561 const char *file ATTRIBUTE_UNUSED
;
1563 struct file_stack
*p
;
1565 if (need_error_newline
)
1567 fprintf (stderr
, "\n");
1568 need_error_newline
= 0;
1571 if (input_file_stack
&& input_file_stack
->next
!= 0
1572 && input_file_stack_tick
!= last_error_tick
)
1574 for (p
= input_file_stack
->next
; p
; p
= p
->next
)
1575 notice ((p
== input_file_stack
->next
1576 ? "In file included from %s:%d"
1577 : ",\n from %s:%d"),
1579 fprintf (stderr
, ":\n");
1580 last_error_tick
= input_file_stack_tick
;
1583 (*print_error_function
) (input_filename
);
1586 /* Print a message. */
1589 vnotice (file
, msgid
, ap
)
1594 vfprintf (file
, _(msgid
), ap
);
1598 notice
VPROTO((const char *msgid
, ...))
1600 #ifndef ANSI_PROTOTYPES
1605 VA_START (ap
, msgid
);
1607 #ifndef ANSI_PROTOTYPES
1608 msgid
= va_arg (ap
, char *);
1611 vnotice (stderr
, msgid
, ap
);
1616 fnotice
VPROTO((FILE *file
, const char *msgid
, ...))
1618 #ifndef ANSI_PROTOTYPES
1624 VA_START (ap
, msgid
);
1626 #ifndef ANSI_PROTOTYPES
1627 file
= va_arg (ap
, FILE *);
1628 msgid
= va_arg (ap
, const char *);
1631 vnotice (file
, msgid
, ap
);
1635 /* Report FILE and LINE (or program name), and optionally just WARN. */
1638 report_file_and_line (file
, line
, warn
)
1644 fprintf (stderr
, "%s:%d: ", file
, line
);
1646 fprintf (stderr
, "%s: ", progname
);
1649 notice ("warning: ");
1652 /* Print a message. */
1655 vmessage (prefix
, msgid
, ap
)
1661 fprintf (stderr
, "%s: ", prefix
);
1663 vfprintf (stderr
, msgid
, ap
);
1666 /* Print a message relevant to line LINE of file FILE. */
1669 v_message_with_file_and_line (file
, line
, warn
, msgid
, ap
)
1676 report_file_and_line (file
, line
, warn
);
1677 vnotice (stderr
, msgid
, ap
);
1678 fputc ('\n', stderr
);
1681 /* Print a message relevant to the given DECL. */
1684 v_message_with_decl (decl
, warn
, msgid
, ap
)
1692 report_file_and_line (DECL_SOURCE_FILE (decl
),
1693 DECL_SOURCE_LINE (decl
), warn
);
1695 /* Do magic to get around lack of varargs support for insertion
1696 of arguments into existing list. We know that the decl is first;
1697 we ass_u_me that it will be printed with "%s". */
1699 for (p
= _(msgid
); *p
; ++p
)
1703 if (*(p
+ 1) == '%')
1705 else if (*(p
+ 1) != 's')
1712 if (p
> _(msgid
)) /* Print the left-hand substring. */
1714 char fmt
[sizeof "%.255s"];
1715 long width
= p
- _(msgid
);
1717 if (width
> 255L) width
= 255L; /* arbitrary */
1718 sprintf (fmt
, "%%.%lds", width
);
1719 fprintf (stderr
, fmt
, _(msgid
));
1722 if (*p
== '%') /* Print the name. */
1724 const char *n
= (DECL_NAME (decl
)
1725 ? (*decl_printable_name
) (decl
, 2)
1731 if (ISALPHA (*(p
- 1) & 0xFF))
1736 if (*p
) /* Print the rest of the message. */
1737 vmessage ((char *)NULL
, p
, ap
);
1739 fputc ('\n', stderr
);
1742 /* Figure file and line of the given INSN. */
1745 file_and_line_for_asm (insn
, pfile
, pline
)
1750 rtx body
= PATTERN (insn
);
1753 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1754 if (GET_CODE (body
) == SET
&& GET_CODE (SET_SRC (body
)) == ASM_OPERANDS
)
1755 asmop
= SET_SRC (body
);
1756 else if (GET_CODE (body
) == ASM_OPERANDS
)
1758 else if (GET_CODE (body
) == PARALLEL
1759 && GET_CODE (XVECEXP (body
, 0, 0)) == SET
)
1760 asmop
= SET_SRC (XVECEXP (body
, 0, 0));
1761 else if (GET_CODE (body
) == PARALLEL
1762 && GET_CODE (XVECEXP (body
, 0, 0)) == ASM_OPERANDS
)
1763 asmop
= XVECEXP (body
, 0, 0);
1769 *pfile
= ASM_OPERANDS_SOURCE_FILE (asmop
);
1770 *pline
= ASM_OPERANDS_SOURCE_LINE (asmop
);
1774 *pfile
= input_filename
;
1779 /* Report an error at line LINE of file FILE. */
1782 v_error_with_file_and_line (file
, line
, msgid
, ap
)
1789 report_error_function (file
);
1790 v_message_with_file_and_line (file
, line
, 0, msgid
, ap
);
1794 error_with_file_and_line
VPROTO((const char *file
, int line
,
1795 const char *msgid
, ...))
1797 #ifndef ANSI_PROTOTYPES
1804 VA_START (ap
, msgid
);
1806 #ifndef ANSI_PROTOTYPES
1807 file
= va_arg (ap
, const char *);
1808 line
= va_arg (ap
, int);
1809 msgid
= va_arg (ap
, const char *);
1812 v_error_with_file_and_line (file
, line
, msgid
, ap
);
1816 /* Report an error at the declaration DECL.
1817 MSGID is a format string which uses %s to substitute the declaration
1818 name; subsequent substitutions are a la printf. */
1821 v_error_with_decl (decl
, msgid
, ap
)
1827 report_error_function (DECL_SOURCE_FILE (decl
));
1828 v_message_with_decl (decl
, 0, msgid
, ap
);
1832 error_with_decl
VPROTO((tree decl
, const char *msgid
, ...))
1834 #ifndef ANSI_PROTOTYPES
1840 VA_START (ap
, msgid
);
1842 #ifndef ANSI_PROTOTYPES
1843 decl
= va_arg (ap
, tree
);
1844 msgid
= va_arg (ap
, const char *);
1847 v_error_with_decl (decl
, msgid
, ap
);
1851 /* Report an error at the line number of the insn INSN.
1852 This is used only when INSN is an `asm' with operands,
1853 and each ASM_OPERANDS records its own source file and line. */
1856 v_error_for_asm (insn
, msgid
, ap
)
1865 file_and_line_for_asm (insn
, &file
, &line
);
1866 report_error_function (file
);
1867 v_message_with_file_and_line (file
, line
, 0, msgid
, ap
);
1871 error_for_asm
VPROTO((rtx insn
, const char *msgid
, ...))
1873 #ifndef ANSI_PROTOTYPES
1879 VA_START (ap
, msgid
);
1881 #ifndef ANSI_PROTOTYPES
1882 insn
= va_arg (ap
, rtx
);
1883 msgid
= va_arg (ap
, const char *);
1886 v_error_for_asm (insn
, msgid
, ap
);
1890 /* Report an error at the current line number. */
1897 v_error_with_file_and_line (input_filename
, lineno
, msgid
, ap
);
1901 error
VPROTO((const char *msgid
, ...))
1903 #ifndef ANSI_PROTOTYPES
1908 VA_START (ap
, msgid
);
1910 #ifndef ANSI_PROTOTYPES
1911 msgid
= va_arg (ap
, const char *);
1918 /* Report a fatal error at the current line number. */
1926 exit (FATAL_EXIT_CODE
);
1930 fatal
VPROTO((const char *msgid
, ...))
1932 #ifndef ANSI_PROTOTYPES
1937 VA_START (ap
, msgid
);
1939 #ifndef ANSI_PROTOTYPES
1940 msgid
= va_arg (ap
, const char *);
1948 _fatal_insn (msgid
, insn
, file
, line
, function
)
1953 const char *function
;
1957 fancy_abort (file
, line
, function
);
1961 _fatal_insn_not_found (insn
, file
, line
, function
)
1965 const char *function
;
1967 if (INSN_CODE (insn
) < 0)
1968 _fatal_insn ("Unrecognizable insn:", insn
, file
, line
, function
);
1970 _fatal_insn ("Insn does not satisfy its constraints:",
1971 insn
, file
, line
, function
);
1974 /* Report a warning at line LINE of file FILE. */
1977 v_warning_with_file_and_line (file
, line
, msgid
, ap
)
1983 if (count_error (1))
1985 report_error_function (file
);
1986 v_message_with_file_and_line (file
, line
, 1, msgid
, ap
);
1991 warning_with_file_and_line
VPROTO((const char *file
, int line
,
1992 const char *msgid
, ...))
1994 #ifndef ANSI_PROTOTYPES
2001 VA_START (ap
, msgid
);
2003 #ifndef ANSI_PROTOTYPES
2004 file
= va_arg (ap
, const char *);
2005 line
= va_arg (ap
, int);
2006 msgid
= va_arg (ap
, const char *);
2009 v_warning_with_file_and_line (file
, line
, msgid
, ap
);
2013 /* Report a warning at the declaration DECL.
2014 MSGID is a format string which uses %s to substitute the declaration
2015 name; subsequent substitutions are a la printf. */
2018 v_warning_with_decl (decl
, msgid
, ap
)
2023 if (count_error (1))
2025 report_error_function (DECL_SOURCE_FILE (decl
));
2026 v_message_with_decl (decl
, 1, msgid
, ap
);
2031 warning_with_decl
VPROTO((tree decl
, const char *msgid
, ...))
2033 #ifndef ANSI_PROTOTYPES
2039 VA_START (ap
, msgid
);
2041 #ifndef ANSI_PROTOTYPES
2042 decl
= va_arg (ap
, tree
);
2043 msgid
= va_arg (ap
, const char *);
2046 v_warning_with_decl (decl
, msgid
, ap
);
2050 /* Report a warning at the line number of the insn INSN.
2051 This is used only when INSN is an `asm' with operands,
2052 and each ASM_OPERANDS records its own source file and line. */
2055 v_warning_for_asm (insn
, msgid
, ap
)
2060 if (count_error (1))
2065 file_and_line_for_asm (insn
, &file
, &line
);
2066 report_error_function (file
);
2067 v_message_with_file_and_line (file
, line
, 1, msgid
, ap
);
2072 warning_for_asm
VPROTO((rtx insn
, const char *msgid
, ...))
2074 #ifndef ANSI_PROTOTYPES
2080 VA_START (ap
, msgid
);
2082 #ifndef ANSI_PROTOTYPES
2083 insn
= va_arg (ap
, rtx
);
2084 msgid
= va_arg (ap
, const char *);
2087 v_warning_for_asm (insn
, msgid
, ap
);
2091 /* Report a warning at the current line number. */
2094 vwarning (msgid
, ap
)
2098 v_warning_with_file_and_line (input_filename
, lineno
, msgid
, ap
);
2102 warning
VPROTO((const char *msgid
, ...))
2104 #ifndef ANSI_PROTOTYPES
2109 VA_START (ap
, msgid
);
2111 #ifndef ANSI_PROTOTYPES
2112 msgid
= va_arg (ap
, const char *);
2115 vwarning (msgid
, ap
);
2119 /* These functions issue either warnings or errors depending on
2120 -pedantic-errors. */
2123 vpedwarn (msgid
, ap
)
2127 if (flag_pedantic_errors
)
2130 vwarning (msgid
, ap
);
2134 pedwarn
VPROTO((const char *msgid
, ...))
2136 #ifndef ANSI_PROTOTYPES
2141 VA_START (ap
, msgid
);
2143 #ifndef ANSI_PROTOTYPES
2144 msgid
= va_arg (ap
, const char *);
2147 vpedwarn (msgid
, ap
);
2152 v_pedwarn_with_decl (decl
, msgid
, ap
)
2157 /* We don't want -pedantic-errors to cause the compilation to fail from
2158 "errors" in system header files. Sometimes fixincludes can't fix what's
2159 broken (eg: unsigned char bitfields - fixing it may change the alignment
2160 which will cause programs to mysteriously fail because the C library
2161 or kernel uses the original layout). There's no point in issuing a
2162 warning either, it's just unnecessary noise. */
2164 if (! DECL_IN_SYSTEM_HEADER (decl
))
2166 if (flag_pedantic_errors
)
2167 v_error_with_decl (decl
, msgid
, ap
);
2169 v_warning_with_decl (decl
, msgid
, ap
);
2174 pedwarn_with_decl
VPROTO((tree decl
, const char *msgid
, ...))
2176 #ifndef ANSI_PROTOTYPES
2182 VA_START (ap
, msgid
);
2184 #ifndef ANSI_PROTOTYPES
2185 decl
= va_arg (ap
, tree
);
2186 msgid
= va_arg (ap
, const char *);
2189 v_pedwarn_with_decl (decl
, msgid
, ap
);
2194 v_pedwarn_with_file_and_line (file
, line
, msgid
, ap
)
2200 if (flag_pedantic_errors
)
2201 v_error_with_file_and_line (file
, line
, msgid
, ap
);
2203 v_warning_with_file_and_line (file
, line
, msgid
, ap
);
2207 pedwarn_with_file_and_line
VPROTO((const char *file
, int line
,
2208 const char *msgid
, ...))
2210 #ifndef ANSI_PROTOTYPES
2217 VA_START (ap
, msgid
);
2219 #ifndef ANSI_PROTOTYPES
2220 file
= va_arg (ap
, const char *);
2221 line
= va_arg (ap
, int);
2222 msgid
= va_arg (ap
, const char *);
2225 v_pedwarn_with_file_and_line (file
, line
, msgid
, ap
);
2229 /* Apologize for not implementing some feature. */
2238 fprintf (stderr
, "%s:%d: ", input_filename
, lineno
);
2240 fprintf (stderr
, "%s: ", progname
);
2241 notice ("sorry, not implemented: ");
2242 vnotice (stderr
, msgid
, ap
);
2243 fputc ('\n', stderr
);
2247 sorry
VPROTO((const char *msgid
, ...))
2249 #ifndef ANSI_PROTOTYPES
2254 VA_START (ap
, msgid
);
2256 #ifndef ANSI_PROTOTYPES
2257 msgid
= va_arg (ap
, const char *);
2265 /* This calls abort and is used to avoid problems when abort if a macro.
2266 It is used when we need to pass the address of abort. */
2274 /* When `malloc.c' is compiled with `rcheck' defined,
2275 it calls this function to report clobberage. */
2279 const char * s ATTRIBUTE_UNUSED
;
2284 /* Same as `malloc' but report error if no memory available. */
2295 value
= (PTR
) malloc (size
);
2297 fatal ("virtual memory exhausted");
2301 /* Same as `calloc' but report error if no memory available. */
2304 xcalloc (size1
, size2
)
2305 size_t size1
, size2
;
2309 if (size1
== 0 || size2
== 0)
2312 value
= (PTR
) calloc (size1
, size2
);
2314 fatal ("virtual memory exhausted");
2319 /* Same as `realloc' but report error if no memory available.
2320 Also handle null PTR even if the vendor realloc gets it wrong. */
2323 xrealloc (ptr
, size
)
2327 register PTR result
;
2332 result
= (ptr
? (PTR
) realloc (ptr
, size
) : (PTR
) malloc (size
));
2335 fatal ("virtual memory exhausted");
2340 /* Same as `strdup' but report error if no memory available. */
2344 register const char *s
;
2346 register char *result
= (char *) malloc (strlen (s
) + 1);
2349 fatal ("virtual memory exhausted");
2354 /* Return the logarithm of X, base 2, considering X unsigned,
2355 if X is a power of 2. Otherwise, returns -1.
2357 This should be used via the `exact_log2' macro. */
2361 register unsigned HOST_WIDE_INT x
;
2363 register int log
= 0;
2364 /* Test for 0 or a power of 2. */
2365 if (x
== 0 || x
!= (x
& -x
))
2367 while ((x
>>= 1) != 0)
2372 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
2373 If X is 0, return -1.
2375 This should be used via the floor_log2 macro. */
2379 register unsigned HOST_WIDE_INT x
;
2381 register int log
= -1;
2388 static int float_handler_set
;
2390 jmp_buf float_handler
;
2392 /* Signals actually come here. */
2395 float_signal (signo
)
2396 /* If this is missing, some compilers complain. */
2397 int signo ATTRIBUTE_UNUSED
;
2399 if (float_handled
== 0)
2401 #if defined (USG) || defined (hpux)
2402 signal (SIGFPE
, float_signal
); /* re-enable the signal catcher */
2405 signal (SIGFPE
, float_signal
);
2406 longjmp (float_handler
, 1);
2409 /* Specify where to longjmp to when a floating arithmetic error happens.
2410 If HANDLER is 0, it means don't handle the errors any more. */
2413 set_float_handler (handler
)
2416 float_handled
= (handler
!= 0);
2418 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2420 if (float_handled
&& ! float_handler_set
)
2422 signal (SIGFPE
, float_signal
);
2423 float_handler_set
= 1;
2427 /* This is a wrapper function for code which might elicit an
2428 arithmetic exception. That code should be passed in as a function
2429 pointer FN, and one argument DATA. DATA is usually a struct which
2430 contains the real input and output for function FN. This function
2431 returns 0 (failure) if longjmp was called (i.e. an exception
2432 occured.) It returns 1 (success) otherwise. */
2435 do_float_handler (fn
, data
)
2436 void (*fn
) PROTO ((PTR
));
2443 /* We got here via longjmp() caused by an exception in function fn() */
2444 set_float_handler (NULL
);
2448 set_float_handler (buf
);
2450 set_float_handler (NULL
);
2454 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
2455 error happens, pushing the previous specification into OLD_HANDLER.
2456 Return an indication of whether there was a previous handler in effect. */
2459 push_float_handler (handler
, old_handler
)
2460 jmp_buf handler
, old_handler
;
2462 int was_handled
= float_handled
;
2466 memcpy ((char *) old_handler
, (char *) float_handler
,
2467 sizeof (float_handler
));
2469 memcpy ((char *) float_handler
, (char *) handler
, sizeof (float_handler
));
2473 /* Restore the previous specification of whether and where to longjmp to
2474 when a floating arithmetic error happens. */
2477 pop_float_handler (handled
, handler
)
2481 float_handled
= handled
;
2483 bcopy ((char *) handler
, (char *) float_handler
, sizeof (float_handler
));
2486 /* Handler for SIGPIPE. */
2490 /* If this is missing, some compilers complain. */
2491 int signo ATTRIBUTE_UNUSED
;
2493 fatal ("output pipe has been closed");
2496 /* Strip off a legitimate source ending from the input string NAME of
2497 length LEN. Rather than having to know the names used by all of
2498 our front ends, we strip off an ending of a period followed by
2499 up to five characters. (Java uses ".class".) */
2502 strip_off_ending (name
, len
)
2507 for (i
= 2; i
< 6 && len
> i
; i
++)
2509 if (name
[len
- i
] == '.')
2511 name
[len
- i
] = '\0';
2517 /* Output a quoted string. */
2520 output_quoted_string (asm_file
, string
)
2524 #ifdef OUTPUT_QUOTED_STRING
2525 OUTPUT_QUOTED_STRING (asm_file
, string
);
2529 putc ('\"', asm_file
);
2530 while ((c
= *string
++) != 0)
2532 if (c
== '\"' || c
== '\\')
2533 putc ('\\', asm_file
);
2536 putc ('\"', asm_file
);
2540 /* Output a file name in the form wanted by System V. */
2543 output_file_directive (asm_file
, input_name
)
2545 const char *input_name
;
2547 int len
= strlen (input_name
);
2548 const char *na
= input_name
+ len
;
2550 /* NA gets INPUT_NAME sans directory names. */
2551 while (na
> input_name
)
2555 #ifdef DIR_SEPARATOR
2556 if (na
[-1] == DIR_SEPARATOR
)
2562 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2563 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file
, na
);
2565 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2566 ASM_OUTPUT_SOURCE_FILENAME (asm_file
, na
);
2568 fprintf (asm_file
, "\t.file\t");
2569 output_quoted_string (asm_file
, na
);
2570 fputc ('\n', asm_file
);
2575 #ifdef ASM_IDENTIFY_LANGUAGE
2576 /* Routine to build language identifier for object file. */
2578 output_lang_identify (asm_out_file
)
2581 int len
= strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2582 char *s
= (char *) alloca (len
);
2583 sprintf (s
, "__gnu_compiled_%s", lang_identify ());
2584 ASM_OUTPUT_LABEL (asm_out_file
, s
);
2588 /* Routine to open a dump file. */
2590 open_dump_file (suffix
, function_name
)
2592 const char *function_name
;
2599 dumpname
= (char *) xmalloc (strlen (dump_base_name
) + strlen (suffix
) + 1);
2601 if (rtl_dump_file
!= NULL
)
2602 fclose (rtl_dump_file
);
2604 strcpy (dumpname
, dump_base_name
);
2605 strcat (dumpname
, suffix
);
2607 rtl_dump_file
= fopen (dumpname
, "a");
2609 if (rtl_dump_file
== NULL
)
2610 pfatal_with_name (dumpname
);
2615 fprintf (rtl_dump_file
, "\n;; Function %s\n\n", function_name
);
2621 /* Routine to close a dump file. */
2623 close_dump_file (func
, insns
)
2624 void (*func
) PROTO ((FILE *, rtx
));
2631 func (rtl_dump_file
, insns
);
2633 fflush (rtl_dump_file
);
2634 fclose (rtl_dump_file
);
2636 rtl_dump_file
= NULL
;
2642 /* Routine to dump rtl into a file. */
2644 dump_rtl (suffix
, decl
, func
, insns
)
2647 void (*func
) PROTO ((FILE *, rtx
));
2650 open_dump_file (suffix
, decl_printable_name (decl
, 2));
2651 close_dump_file (func
, insns
);
2654 /* Routine to empty a dump file. */
2656 clean_dump_file (suffix
)
2661 dumpname
= (char *) xmalloc (strlen (dump_base_name
) + strlen (suffix
) + 1);
2663 strcpy (dumpname
, dump_base_name
);
2664 strcat (dumpname
, suffix
);
2666 rtl_dump_file
= fopen (dumpname
, "w");
2668 if (rtl_dump_file
== NULL
)
2669 pfatal_with_name (dumpname
);
2673 fclose (rtl_dump_file
);
2674 rtl_dump_file
= NULL
;
2679 /* Do any final processing required for the declarations in VEC, of
2680 which there are LEN. We write out inline functions and variables
2681 that have been deferred until this point, but which are required.
2682 Returns non-zero if anything was put out. */
2684 wrapup_global_declarations (vec
, len
)
2691 int output_something
= 0;
2693 for (i
= 0; i
< len
; i
++)
2697 /* We're not deferring this any longer. */
2698 DECL_DEFER_OUTPUT (decl
) = 0;
2700 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_SIZE (decl
) == 0
2701 && incomplete_decl_finalize_hook
!= 0)
2702 (*incomplete_decl_finalize_hook
) (decl
);
2705 /* Now emit any global variables or functions that we have been
2706 putting off. We need to loop in case one of the things emitted
2707 here references another one which comes earlier in the list. */
2711 for (i
= 0; i
< len
; i
++)
2715 if (TREE_ASM_WRITTEN (decl
) || DECL_EXTERNAL (decl
))
2718 /* Don't write out static consts, unless we still need them.
2720 We also keep static consts if not optimizing (for debugging),
2721 unless the user specified -fno-keep-static-consts.
2722 ??? They might be better written into the debug information.
2723 This is possible when using DWARF.
2725 A language processor that wants static constants to be always
2726 written out (even if it is not used) is responsible for
2727 calling rest_of_decl_compilation itself. E.g. the C front-end
2728 calls rest_of_decl_compilation from finish_decl.
2729 One motivation for this is that is conventional in some
2730 environments to write things like:
2731 static const char rcsid[] = "... version string ...";
2732 intending to force the string to be in the executable.
2734 A language processor that would prefer to have unneeded
2735 static constants "optimized away" would just defer writing
2736 them out until here. E.g. C++ does this, because static
2737 constants are often defined in header files.
2739 ??? A tempting alternative (for both C and C++) would be
2740 to force a constant to be written if and only if it is
2741 defined in a main file, as opposed to an include file. */
2743 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2744 && (! TREE_READONLY (decl
)
2745 || TREE_PUBLIC (decl
)
2746 || (!optimize
&& flag_keep_static_consts
)
2747 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2750 rest_of_decl_compilation (decl
, NULL_PTR
, 1, 1);
2753 if (TREE_CODE (decl
) == FUNCTION_DECL
2754 && DECL_INITIAL (decl
) != 0
2755 && DECL_SAVED_INSNS (decl
) != 0
2756 && (flag_keep_inline_functions
2757 || (TREE_PUBLIC (decl
) && !DECL_COMDAT (decl
))
2758 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
))))
2761 temporary_allocation ();
2762 output_inline_function (decl
);
2763 permanent_allocation (1);
2768 output_something
= 1;
2772 return output_something
;
2775 /* Issue appropriate warnings for the global declarations in VEC (of
2776 which there are LEN). Output debugging information for them. */
2778 check_global_declarations (vec
, len
)
2785 for (i
= 0; i
< len
; i
++)
2789 if (TREE_CODE (decl
) == VAR_DECL
&& TREE_STATIC (decl
)
2790 && ! TREE_ASM_WRITTEN (decl
))
2791 /* Cancel the RTL for this decl so that, if debugging info
2792 output for global variables is still to come,
2793 this one will be omitted. */
2794 DECL_RTL (decl
) = NULL
;
2796 /* Warn about any function
2797 declared static but not defined.
2798 We don't warn about variables,
2799 because many programs have static variables
2800 that exist only to get some text into the object file. */
2801 if (TREE_CODE (decl
) == FUNCTION_DECL
2803 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2804 && DECL_INITIAL (decl
) == 0
2805 && DECL_EXTERNAL (decl
)
2806 && ! DECL_ARTIFICIAL (decl
)
2807 && ! TREE_PUBLIC (decl
))
2809 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl
)))
2810 pedwarn_with_decl (decl
,
2811 "`%s' used but never defined");
2813 warning_with_decl (decl
,
2814 "`%s' declared `static' but never defined");
2815 /* This symbol is effectively an "extern" declaration now. */
2816 TREE_PUBLIC (decl
) = 1;
2817 assemble_external (decl
);
2820 /* Warn about static fns or vars defined but not used,
2821 but not about inline functions or static consts
2822 since defining those in header files is normal practice. */
2824 && ((TREE_CODE (decl
) == FUNCTION_DECL
&& ! DECL_INLINE (decl
))
2825 || (TREE_CODE (decl
) == VAR_DECL
&& ! TREE_READONLY (decl
)))
2826 && ! DECL_IN_SYSTEM_HEADER (decl
)
2827 && ! DECL_EXTERNAL (decl
)
2828 && ! TREE_PUBLIC (decl
)
2829 && ! TREE_USED (decl
)
2830 && (TREE_CODE (decl
) == FUNCTION_DECL
|| ! DECL_REGISTER (decl
))
2831 /* The TREE_USED bit for file-scope decls
2832 is kept in the identifier, to handle multiple
2833 external decls in different scopes. */
2834 && ! TREE_USED (DECL_NAME (decl
)))
2835 warning_with_decl (decl
, "`%s' defined but not used");
2837 #ifdef SDB_DEBUGGING_INFO
2838 /* The COFF linker can move initialized global vars to the end.
2839 And that can screw up the symbol ordering.
2840 By putting the symbols in that order to begin with,
2841 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2842 if (write_symbols
== SDB_DEBUG
&& TREE_CODE (decl
) == VAR_DECL
2843 && TREE_PUBLIC (decl
) && DECL_INITIAL (decl
)
2844 && ! DECL_EXTERNAL (decl
)
2845 && DECL_RTL (decl
) != 0)
2846 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
2848 /* Output COFF information for non-global
2849 file-scope initialized variables. */
2850 if (write_symbols
== SDB_DEBUG
2851 && TREE_CODE (decl
) == VAR_DECL
2852 && DECL_INITIAL (decl
)
2853 && ! DECL_EXTERNAL (decl
)
2854 && DECL_RTL (decl
) != 0
2855 && GET_CODE (DECL_RTL (decl
)) == MEM
)
2856 TIMEVAR (symout_time
, sdbout_toplevel_data (decl
));
2857 #endif /* SDB_DEBUGGING_INFO */
2858 #ifdef DWARF_DEBUGGING_INFO
2859 /* Output DWARF information for file-scope tentative data object
2860 declarations, file-scope (extern) function declarations (which
2861 had no corresponding body) and file-scope tagged type declarations
2862 and definitions which have not yet been forced out. */
2864 if (write_symbols
== DWARF_DEBUG
2865 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2866 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 1));
2868 #ifdef DWARF2_DEBUGGING_INFO
2869 /* Output DWARF2 information for file-scope tentative data object
2870 declarations, file-scope (extern) function declarations (which
2871 had no corresponding body) and file-scope tagged type declarations
2872 and definitions which have not yet been forced out. */
2874 if (write_symbols
== DWARF2_DEBUG
2875 && (TREE_CODE (decl
) != FUNCTION_DECL
|| !DECL_INITIAL (decl
)))
2876 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
2881 /* Compile an entire file of output from cpp, named NAME.
2882 Write a file of assembly output and various debugging dumps. */
2891 int name_specified
= name
!= 0;
2893 if (dump_base_name
== 0)
2894 dump_base_name
= name
? name
: "gccdump";
2898 integration_time
= 0;
2904 branch_prob_time
= 0;
2909 local_alloc_time
= 0;
2910 global_alloc_time
= 0;
2916 shorten_branch_time
= 0;
2922 /* Initialize data in various passes. */
2926 name
= init_parse (name
);
2927 init_emit_once (debug_info_level
== DINFO_LEVEL_NORMAL
2928 || debug_info_level
== DINFO_LEVEL_VERBOSE
2929 || flag_test_coverage
2930 || warn_notreached
);
2932 init_decl_processing ();
2938 init_function_once ();
2940 /* The following initialization functions need to generate rtl, so
2941 provide a dummy function context for them. */
2942 init_dummy_function_start ();
2945 if (flag_caller_saves
)
2946 init_caller_save ();
2947 expand_dummy_function_end ();
2949 /* If auxiliary info generation is desired, open the output file.
2950 This goes in the same directory as the source file--unlike
2951 all the other output files. */
2952 if (flag_gen_aux_info
)
2954 aux_info_file
= fopen (aux_info_file_name
, "w");
2955 if (aux_info_file
== 0)
2956 pfatal_with_name (aux_info_file_name
);
2959 /* Clear the dump files. */
2961 clean_dump_file (".rtl");
2964 clean_dump_file (".jump");
2965 if (graph_dump_format
!= no_graph
)
2966 clean_graph_dump_file (dump_base_name
, ".jump");
2970 clean_dump_file (".addressof");
2971 if (graph_dump_format
!= no_graph
)
2972 clean_graph_dump_file (dump_base_name
, ".addressof");
2976 clean_dump_file (".cse");
2977 if (graph_dump_format
!= no_graph
)
2978 clean_graph_dump_file (dump_base_name
, ".cse");
2982 clean_dump_file (".loop");
2983 if (graph_dump_format
!= no_graph
)
2984 clean_graph_dump_file (dump_base_name
, ".loop");
2988 clean_dump_file (".cse2");
2989 if (graph_dump_format
!= no_graph
)
2990 clean_graph_dump_file (dump_base_name
, ".cse2");
2992 if (branch_prob_dump
)
2994 clean_dump_file (".bp");
2995 if (graph_dump_format
!= no_graph
)
2996 clean_graph_dump_file (dump_base_name
, ".bp");
3000 clean_dump_file (".flow");
3001 if (graph_dump_format
!= no_graph
)
3002 clean_graph_dump_file (dump_base_name
, ".flow");
3006 clean_dump_file (".combine");
3007 if (graph_dump_format
!= no_graph
)
3008 clean_graph_dump_file (dump_base_name
, ".combine");
3012 clean_dump_file (".regmove");
3013 if (graph_dump_format
!= no_graph
)
3014 clean_graph_dump_file (dump_base_name
, ".regmove");
3018 clean_dump_file (".sched");
3019 if (graph_dump_format
!= no_graph
)
3020 clean_graph_dump_file (dump_base_name
, ".sched");
3024 clean_dump_file (".lreg");
3025 if (graph_dump_format
!= no_graph
)
3026 clean_graph_dump_file (dump_base_name
, ".lreg");
3028 if (global_reg_dump
)
3030 clean_dump_file (".greg");
3031 if (graph_dump_format
!= no_graph
)
3032 clean_graph_dump_file (dump_base_name
, ".greg");
3036 clean_dump_file (".flow2");
3037 if (graph_dump_format
!= no_graph
)
3038 clean_graph_dump_file (dump_base_name
, ".flow2");
3042 clean_dump_file (".peephole2");
3043 if (graph_dump_format
!= no_graph
)
3044 clean_graph_dump_file (dump_base_name
, ".peephole2");
3048 clean_dump_file (".sched2");
3049 if (graph_dump_format
!= no_graph
)
3050 clean_graph_dump_file (dump_base_name
, ".sched2");
3054 clean_dump_file (".jump2");
3055 if (graph_dump_format
!= no_graph
)
3056 clean_graph_dump_file (dump_base_name
, ".jump2");
3061 clean_dump_file (".dbr");
3062 if (graph_dump_format
!= no_graph
)
3063 clean_graph_dump_file (dump_base_name
, ".dbr");
3068 clean_dump_file (".gcse");
3069 if (graph_dump_format
!= no_graph
)
3070 clean_graph_dump_file (dump_base_name
, ".gcse");
3075 clean_dump_file (".stack");
3076 if (graph_dump_format
!= no_graph
)
3077 clean_graph_dump_file (dump_base_name
, ".stack");
3080 #ifdef MACHINE_DEPENDENT_REORG
3081 if (mach_dep_reorg_dump
)
3083 clean_dump_file (".mach");
3084 if (graph_dump_format
!= no_graph
)
3085 clean_graph_dump_file (dump_base_name
, ".mach");
3089 /* Open assembler code output file. */
3091 if (flag_syntax_only
)
3092 asm_out_file
= NULL
;
3095 if (! name_specified
&& asm_file_name
== 0)
3096 asm_out_file
= stdout
;
3099 int len
= strlen (dump_base_name
);
3100 register char *dumpname
= (char *) xmalloc (len
+ 6);
3101 strcpy (dumpname
, dump_base_name
);
3102 strip_off_ending (dumpname
, len
);
3103 strcat (dumpname
, ".s");
3104 if (asm_file_name
== 0)
3106 asm_file_name
= (char *) xmalloc (strlen (dumpname
) + 1);
3107 strcpy (asm_file_name
, dumpname
);
3109 if (!strcmp (asm_file_name
, "-"))
3110 asm_out_file
= stdout
;
3112 asm_out_file
= fopen (asm_file_name
, "w");
3113 if (asm_out_file
== 0)
3114 pfatal_with_name (asm_file_name
);
3117 #ifdef IO_BUFFER_SIZE
3118 setvbuf (asm_out_file
, (char *) xmalloc (IO_BUFFER_SIZE
),
3119 _IOFBF
, IO_BUFFER_SIZE
);
3123 input_filename
= name
;
3125 /* Put an entry on the input file stack for the main input file. */
3127 = (struct file_stack
*) xmalloc (sizeof (struct file_stack
));
3128 input_file_stack
->next
= 0;
3129 input_file_stack
->name
= input_filename
;
3131 /* Perform language-specific initialization.
3132 This may set main_input_filename. */
3135 /* If the input doesn't start with a #line, use the input name
3136 as the official input file name. */
3137 if (main_input_filename
== 0)
3138 main_input_filename
= name
;
3140 if (flag_syntax_only
)
3142 write_symbols
= NO_DEBUG
;
3144 profile_block_flag
= 0;
3148 ASM_FILE_START (asm_out_file
);
3150 #ifdef ASM_COMMENT_START
3151 if (flag_verbose_asm
)
3153 /* Print the list of options in effect. */
3154 print_version (asm_out_file
, ASM_COMMENT_START
);
3155 print_switch_values (asm_out_file
, 0, MAX_LINE
,
3156 ASM_COMMENT_START
, " ", "\n");
3157 /* Add a blank line here so it appears in assembler output but not
3159 fprintf (asm_out_file
, "\n");
3163 /* Output something to inform GDB that this compilation was by GCC. */
3164 #ifndef ASM_IDENTIFY_GCC
3165 fprintf (asm_out_file
, "gcc2_compiled.:\n");
3167 ASM_IDENTIFY_GCC (asm_out_file
);
3170 /* Output something to identify which front-end produced this file. */
3171 #ifdef ASM_IDENTIFY_LANGUAGE
3172 ASM_IDENTIFY_LANGUAGE (asm_out_file
);
3174 } /* ! flag_syntax_only */
3176 #ifndef ASM_OUTPUT_SECTION_NAME
3177 if (flag_function_sections
)
3179 warning ("-ffunction-sections not supported for this target.");
3180 flag_function_sections
= 0;
3182 if (flag_data_sections
)
3184 warning ("-fdata-sections not supported for this target.");
3185 flag_data_sections
= 0;
3189 if (flag_function_sections
3190 && (profile_flag
|| profile_block_flag
))
3192 warning ("-ffunction-sections disabled; it makes profiling impossible.");
3193 flag_function_sections
= 0;
3196 #ifndef OBJECT_FORMAT_ELF
3197 if (flag_function_sections
&& write_symbols
!= NO_DEBUG
)
3198 warning ("-ffunction-sections may affect debugging on some targets.");
3201 /* ??? Note: There used to be a conditional here
3202 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
3203 This was to guarantee separation between gcc_compiled. and
3204 the first function, for the sake of dbx on Suns.
3205 However, having the extra zero here confused the Emacs
3206 code for unexec, and might confuse other programs too.
3207 Therefore, I took out that change.
3208 In future versions we should find another way to solve
3209 that dbx problem. -- rms, 23 May 93. */
3211 /* Don't let the first function fall at the same address
3212 as gcc_compiled., if profiling. */
3213 if (profile_flag
|| profile_block_flag
)
3215 /* It's best if we can write a nop here since some
3216 assemblers don't tolerate zeros in the text section. */
3217 if (insn_template
[CODE_FOR_nop
] != 0)
3218 output_asm_insn (insn_template
[CODE_FOR_nop
], NULL_PTR
);
3220 assemble_zeros (UNITS_PER_WORD
);
3223 /* If dbx symbol table desired, initialize writing it
3224 and output the predefined types. */
3225 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3226 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
3227 TIMEVAR (symout_time
, dbxout_init (asm_out_file
, main_input_filename
,
3230 #ifdef SDB_DEBUGGING_INFO
3231 if (write_symbols
== SDB_DEBUG
)
3232 TIMEVAR (symout_time
, sdbout_init (asm_out_file
, main_input_filename
,
3235 #ifdef DWARF_DEBUGGING_INFO
3236 if (write_symbols
== DWARF_DEBUG
)
3237 TIMEVAR (symout_time
, dwarfout_init (asm_out_file
, main_input_filename
));
3239 #ifdef DWARF2_UNWIND_INFO
3240 if (dwarf2out_do_frame ())
3241 dwarf2out_frame_init ();
3243 #ifdef DWARF2_DEBUGGING_INFO
3244 if (write_symbols
== DWARF2_DEBUG
)
3245 TIMEVAR (symout_time
, dwarf2out_init (asm_out_file
, main_input_filename
));
3248 /* Initialize yet another pass. */
3250 init_final (main_input_filename
);
3251 init_branch_prob (dump_base_name
);
3253 start_time
= get_run_time ();
3255 /* Call the parser, which parses the entire file
3256 (calling rest_of_compilation for each function). */
3258 if (yyparse () != 0)
3260 if (errorcount
== 0)
3261 notice ("Errors detected in input file (your bison.simple is out of date)\n");
3263 /* In case there were missing closebraces,
3264 get us back to the global binding level. */
3265 while (! global_bindings_p ())
3269 /* Compilation is now finished except for writing
3270 what's left of the symbol table output. */
3272 parse_time
+= get_run_time () - start_time
;
3274 parse_time
-= integration_time
;
3275 parse_time
-= varconst_time
;
3277 if (flag_syntax_only
)
3280 globals
= getdecls ();
3282 /* Really define vars that have had only a tentative definition.
3283 Really output inline functions that must actually be callable
3284 and have not been output so far. */
3287 int len
= list_length (globals
);
3288 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
3292 /* Process the decls in reverse order--earliest first.
3293 Put them into VEC from back to front, then take out from front. */
3295 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
3296 vec
[len
- i
- 1] = decl
;
3298 wrapup_global_declarations (vec
, len
);
3300 /* This must occur after the loop to output deferred functions. Else
3301 the profiler initializer would not be emitted if all the functions
3302 in this compilation unit were deferred.
3304 output_func_start_profiler can not cause any additional functions or
3305 data to need to be output, so it need not be in the deferred function
3307 output_func_start_profiler ();
3309 /* Now that all possible functions have been output, we can dump
3310 the exception table. */
3312 output_exception_table ();
3314 check_global_declarations (vec
, len
);
3317 /* Write out any pending weak symbol declarations. */
3321 /* Do dbx symbols */
3322 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3323 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
3324 TIMEVAR (symout_time
,
3326 dbxout_finish (asm_out_file
, main_input_filename
);
3330 #ifdef DWARF_DEBUGGING_INFO
3331 if (write_symbols
== DWARF_DEBUG
)
3332 TIMEVAR (symout_time
,
3338 #ifdef DWARF2_UNWIND_INFO
3339 if (dwarf2out_do_frame ())
3340 dwarf2out_frame_finish ();
3343 #ifdef DWARF2_DEBUGGING_INFO
3344 if (write_symbols
== DWARF2_DEBUG
)
3345 TIMEVAR (symout_time
,
3347 dwarf2out_finish ();
3351 /* Output some stuff at end of file if nec. */
3353 end_final (dump_base_name
);
3355 if (branch_prob_dump
)
3356 open_dump_file (".bp", NULL
);
3358 TIMEVAR (dump_time
, end_branch_prob (rtl_dump_file
));
3360 if (branch_prob_dump
)
3361 close_dump_file (NULL
, NULL_RTX
);
3364 ASM_FILE_END (asm_out_file
);
3368 /* Language-specific end of compilation actions. */
3372 /* Close the dump files. */
3374 if (flag_gen_aux_info
)
3376 fclose (aux_info_file
);
3378 unlink (aux_info_file_name
);
3383 open_dump_file (".combine", NULL
);
3384 TIMEVAR (dump_time
, dump_combine_total_stats (rtl_dump_file
));
3385 close_dump_file (NULL
, NULL_RTX
);
3388 /* Close non-debugging input and output files. Take special care to note
3389 whether fclose returns an error, since the pages might still be on the
3390 buffer chain while the file is open. */
3394 if (! flag_syntax_only
3395 && (ferror (asm_out_file
) != 0 || fclose (asm_out_file
) != 0))
3396 fatal_io_error (asm_file_name
);
3398 /* Do whatever is necessary to finish printing the graphs. */
3399 if (graph_dump_format
!= no_graph
)
3402 finish_graph_dump_file (dump_base_name
, ".jump");
3404 finish_graph_dump_file (dump_base_name
, ".addressof");
3406 finish_graph_dump_file (dump_base_name
, ".cse");
3408 finish_graph_dump_file (dump_base_name
, ".loop");
3410 finish_graph_dump_file (dump_base_name
, ".cse2");
3411 if (branch_prob_dump
)
3412 finish_graph_dump_file (dump_base_name
, ".bp");
3414 finish_graph_dump_file (dump_base_name
, ".flow");
3416 finish_graph_dump_file (dump_base_name
, ".combine");
3418 finish_graph_dump_file (dump_base_name
, ".regmove");
3420 finish_graph_dump_file (dump_base_name
, ".sched");
3422 finish_graph_dump_file (dump_base_name
, ".lreg");
3423 if (global_reg_dump
)
3424 finish_graph_dump_file (dump_base_name
, ".greg");
3426 finish_graph_dump_file (dump_base_name
, ".flow2");
3428 finish_graph_dump_file (dump_base_name
, ".sched2");
3430 finish_graph_dump_file (dump_base_name
, ".jump2");
3433 finish_graph_dump_file (dump_base_name
, ".dbr");
3436 finish_graph_dump_file (dump_base_name
, ".gcse");
3439 finish_graph_dump_file (dump_base_name
, ".stack");
3441 #ifdef MACHINE_DEPENDENT_REORG
3442 if (mach_dep_reorg_dump
)
3443 finish_graph_dump_file (dump_base_name
, ".mach");
3447 /* Free up memory for the benefit of leak detectors. */
3450 /* Print the times. */
3454 all_time
= get_run_time ();
3456 fprintf (stderr
,"\n");
3458 print_time ("parse", parse_time
);
3459 print_time ("integration", integration_time
);
3460 print_time ("jump", jump_time
);
3461 print_time ("cse", cse_time
);
3462 print_time ("gcse", gcse_time
);
3463 print_time ("loop", loop_time
);
3464 print_time ("cse2", cse2_time
);
3465 print_time ("branch-prob", branch_prob_time
);
3466 print_time ("flow", flow_time
);
3467 print_time ("combine", combine_time
);
3468 print_time ("regmove", regmove_time
);
3469 print_time ("sched", sched_time
);
3470 print_time ("local-alloc", local_alloc_time
);
3471 print_time ("global-alloc", global_alloc_time
);
3472 print_time ("flow2", flow2_time
);
3473 print_time ("sched2", sched2_time
);
3475 print_time ("dbranch", dbr_sched_time
);
3477 print_time ("shorten-branch", shorten_branch_time
);
3478 print_time ("stack-reg", stack_reg_time
);
3479 print_time ("final", final_time
);
3480 print_time ("varconst", varconst_time
);
3481 print_time ("symout", symout_time
);
3482 print_time ("dump", dump_time
);
3483 print_time ("gc", gc_time
);
3487 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
3488 and TYPE_DECL nodes.
3490 This does nothing for local (non-static) variables.
3491 Otherwise, it sets up the RTL and outputs any assembler code
3492 (label definition, storage allocation and initialization).
3494 DECL is the declaration. If ASMSPEC is nonzero, it specifies
3495 the assembler symbol name to be used. TOP_LEVEL is nonzero
3496 if this declaration is not within a function. */
3499 rest_of_decl_compilation (decl
, asmspec
, top_level
, at_end
)
3501 const char *asmspec
;
3505 /* Declarations of variables, and of functions defined elsewhere. */
3507 /* The most obvious approach, to put an #ifndef around where
3508 this macro is used, doesn't work since it's inside a macro call. */
3509 #ifndef ASM_FINISH_DECLARE_OBJECT
3510 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
3513 /* Forward declarations for nested functions are not "external",
3514 but we need to treat them as if they were. */
3515 if (TREE_STATIC (decl
) || DECL_EXTERNAL (decl
)
3516 || TREE_CODE (decl
) == FUNCTION_DECL
)
3517 TIMEVAR (varconst_time
,
3519 make_decl_rtl (decl
, asmspec
, top_level
);
3520 /* Initialized extern variable exists to be replaced
3521 with its value, or represents something that will be
3522 output in another file. */
3523 if (! (TREE_CODE (decl
) == VAR_DECL
3524 && DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
3525 && DECL_INITIAL (decl
) != 0
3526 && DECL_INITIAL (decl
) != error_mark_node
))
3527 /* Don't output anything
3528 when a tentative file-scope definition is seen.
3529 But at end of compilation, do output code for them. */
3530 if (! (! at_end
&& top_level
3531 && (DECL_INITIAL (decl
) == 0
3532 || DECL_INITIAL (decl
) == error_mark_node
)))
3533 assemble_variable (decl
, top_level
, at_end
, 0);
3534 if (decl
== last_assemble_variable_decl
)
3536 ASM_FINISH_DECLARE_OBJECT (asm_out_file
, decl
,
3540 else if (DECL_REGISTER (decl
) && asmspec
!= 0)
3542 if (decode_reg_name (asmspec
) >= 0)
3544 DECL_RTL (decl
) = 0;
3545 make_decl_rtl (decl
, asmspec
, top_level
);
3548 error ("invalid register name `%s' for register variable", asmspec
);
3550 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3551 else if ((write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
3552 && TREE_CODE (decl
) == TYPE_DECL
)
3553 TIMEVAR (symout_time
, dbxout_symbol (decl
, 0));
3555 #ifdef SDB_DEBUGGING_INFO
3556 else if (write_symbols
== SDB_DEBUG
&& top_level
3557 && TREE_CODE (decl
) == TYPE_DECL
)
3558 TIMEVAR (symout_time
, sdbout_symbol (decl
, 0));
3562 /* Called after finishing a record, union or enumeral type. */
3565 rest_of_type_compilation (type
, toplev
)
3566 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO)
3570 tree type ATTRIBUTE_UNUSED
;
3571 int toplev ATTRIBUTE_UNUSED
;
3574 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3575 if (write_symbols
== DBX_DEBUG
|| write_symbols
== XCOFF_DEBUG
)
3576 TIMEVAR (symout_time
, dbxout_symbol (TYPE_STUB_DECL (type
), !toplev
));
3578 #ifdef SDB_DEBUGGING_INFO
3579 if (write_symbols
== SDB_DEBUG
)
3580 TIMEVAR (symout_time
, sdbout_symbol (TYPE_STUB_DECL (type
), !toplev
));
3584 /* This is called from finish_function (within yyparse)
3585 after each top-level definition is parsed.
3586 It is supposed to compile that function or variable
3587 and output the assembler code for it.
3588 After we return, the tree storage is freed. */
3591 rest_of_compilation (decl
)
3595 int start_time
= get_run_time ();
3597 /* Nonzero if we have saved the original DECL_INITIAL of the function,
3598 to be restored after we finish compiling the function
3599 (for use when compiling inline calls to this function). */
3600 tree saved_block_tree
= 0;
3601 /* Likewise, for DECL_ARGUMENTS. */
3602 tree saved_arguments
= 0;
3604 int rebuild_label_notes_after_reload
;
3606 /* If we are reconsidering an inline function
3607 at the end of compilation, skip the stuff for making it inline. */
3609 if (DECL_SAVED_INSNS (decl
) == 0)
3614 /* If requested, consider whether to make this function inline. */
3615 if (DECL_INLINE (decl
) || flag_inline_functions
)
3616 TIMEVAR (integration_time
,
3618 lose
= function_cannot_inline_p (decl
);
3619 if (lose
|| ! optimize
)
3621 if (warn_inline
&& DECL_INLINE (decl
))
3622 warning_with_decl (decl
, lose
);
3623 DECL_ABSTRACT_ORIGIN (decl
) = 0;
3624 /* Don't really compile an extern inline function.
3625 If we can't make it inline, pretend
3626 it was only declared. */
3627 if (DECL_EXTERNAL (decl
))
3629 DECL_INITIAL (decl
) = 0;
3630 goto exit_rest_of_compilation
;
3634 /* ??? Note that this has the effect of making it look
3635 like "inline" was specified for a function if we choose
3636 to inline it. This isn't quite right, but it's
3637 probably not worth the trouble to fix. */
3638 inlinable
= DECL_INLINE (decl
) = 1;
3641 insns
= get_insns ();
3643 /* Dump the rtl code if we are dumping rtl. */
3647 open_dump_file (".rtl", decl_printable_name (decl
, 2));
3649 if (DECL_SAVED_INSNS (decl
))
3650 fprintf (rtl_dump_file
, ";; (integrable)\n\n");
3652 close_dump_file (print_rtl
, insns
);
3655 /* If function is inline, and we don't yet know whether to
3656 compile it by itself, defer decision till end of compilation.
3657 finish_compilation will call rest_of_compilation again
3658 for those functions that need to be output. Also defer those
3659 functions that we are supposed to defer. */
3662 DECL_DEFER_OUTPUT (decl
) = 1;
3664 if (DECL_DEFER_OUTPUT (decl
)
3665 || (DECL_INLINE (decl
)
3666 && ((! TREE_PUBLIC (decl
) && ! TREE_ADDRESSABLE (decl
)
3667 && ! flag_keep_inline_functions
)
3668 || DECL_EXTERNAL (decl
))))
3670 DECL_DEFER_OUTPUT (decl
) = 1;
3672 /* If -Wreturn-type, we have to do a bit of compilation.
3673 However, if we just fall through we will call
3674 save_for_inline_copying() which results in excessive
3675 memory use. Instead, we just want to call
3676 jump_optimize() to figure out whether or not we can fall
3677 off the end of the function; we do the minimum amount of
3678 work necessary to make that safe. And, we set optimize
3679 to zero to keep jump_optimize from working too hard. */
3680 if (warn_return_type
)
3682 int saved_optimize
= optimize
;
3684 find_exception_handler_labels ();
3685 jump_optimize (get_insns(), !JUMP_CROSS_JUMP
, !JUMP_NOOP_MOVES
,
3686 !JUMP_AFTER_REGSCAN
);
3687 optimize
= saved_optimize
;
3690 #ifdef DWARF_DEBUGGING_INFO
3691 /* Generate the DWARF info for the "abstract" instance
3692 of a function which we may later generate inlined and/or
3693 out-of-line instances of. */
3694 if (write_symbols
== DWARF_DEBUG
)
3696 set_decl_abstract_flags (decl
, 1);
3697 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
3698 set_decl_abstract_flags (decl
, 0);
3701 #ifdef DWARF2_DEBUGGING_INFO
3702 /* Generate the DWARF2 info for the "abstract" instance
3703 of a function which we may later generate inlined and/or
3704 out-of-line instances of. */
3705 if (write_symbols
== DWARF2_DEBUG
)
3707 set_decl_abstract_flags (decl
, 1);
3708 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
3709 set_decl_abstract_flags (decl
, 0);
3712 TIMEVAR (integration_time
, save_for_inline_nocopy (decl
));
3713 DECL_SAVED_INSNS (decl
)->inlinable
= inlinable
;
3714 goto exit_rest_of_compilation
;
3717 /* If specified extern inline but we aren't inlining it, we are
3718 done. This goes for anything that gets here with DECL_EXTERNAL
3719 set, not just things with DECL_INLINE. */
3720 if (DECL_EXTERNAL (decl
))
3721 goto exit_rest_of_compilation
;
3724 /* Initialize some variables used by the optimizers. */
3725 init_function_for_compilation ();
3727 if (! DECL_DEFER_OUTPUT (decl
))
3728 TREE_ASM_WRITTEN (decl
) = 1;
3730 /* Now that integrate will no longer see our rtl, we need not distinguish
3731 between the return value of this function and the return value of called
3733 rtx_equal_function_value_matters
= 0;
3735 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3736 if ((rtl_dump_and_exit
|| flag_syntax_only
) && !warn_return_type
)
3738 goto exit_rest_of_compilation
;
3741 /* Emit code to get eh context, if needed. */
3745 /* If we are doing position-independent code generation, now
3746 is the time to output special prologues and epilogues.
3747 We do not want to do this earlier, because it just clutters
3748 up inline functions with meaningless insns. */
3753 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3754 Note that that may have been done above, in save_for_inline_copying.
3755 The call to resume_temporary_allocation near the end of this function
3756 goes back to the usual state of affairs. This must be done after
3757 we've built up any unwinders for exception handling, and done
3758 the FINALIZE_PIC work, if necessary. */
3760 rtl_in_current_obstack ();
3762 insns
= get_insns ();
3764 /* Copy any shared structure that should not be shared. */
3766 unshare_all_rtl (insns
);
3768 init_EXPR_INSN_LIST_cache ();
3770 #ifdef SETJMP_VIA_SAVE_AREA
3771 /* This must be performed before virutal register instantiation. */
3772 if (current_function_calls_alloca
)
3773 optimize_save_area_alloca (insns
);
3776 /* Instantiate all virtual registers. */
3778 instantiate_virtual_regs (current_function_decl
, get_insns ());
3780 /* See if we have allocated stack slots that are not directly addressable.
3781 If so, scan all the insns and create explicit address computation
3782 for all references to such slots. */
3783 /* fixup_stack_slots (); */
3785 /* Find all the EH handlers. */
3786 find_exception_handler_labels ();
3788 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3789 are initialized and to compute whether control can drop off the end
3791 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3792 TIMEVAR (jump_time
, jump_optimize (insns
, !JUMP_CROSS_JUMP
, !JUMP_NOOP_MOVES
,
3793 JUMP_AFTER_REGSCAN
));
3795 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3796 if (rtl_dump_and_exit
|| flag_syntax_only
|| DECL_DEFER_OUTPUT (decl
))
3797 goto exit_rest_of_compilation
;
3799 /* Dump rtl code after jump, if we are doing that. */
3801 dump_rtl (".jump", decl
, print_rtl
, insns
);
3803 /* Perform common subexpression elimination.
3804 Nonzero value from `cse_main' means that jumps were simplified
3805 and some code may now be unreachable, so do
3806 jump optimization again. */
3811 open_dump_file (".cse", decl_printable_name (decl
, 2));
3813 TIMEVAR (cse_time
, reg_scan (insns
, max_reg_num (), 1));
3815 if (flag_thread_jumps
)
3816 /* Hacks by tiemann & kenner. */
3817 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 1));
3819 TIMEVAR (cse_time
, tem
= cse_main (insns
, max_reg_num (),
3821 TIMEVAR (cse_time
, delete_trivially_dead_insns (insns
, max_reg_num ()));
3823 if (tem
|| optimize
> 1)
3824 TIMEVAR (jump_time
, jump_optimize (insns
, !JUMP_CROSS_JUMP
,
3826 !JUMP_AFTER_REGSCAN
));
3828 /* Dump rtl code after cse, if we are doing that. */
3832 close_dump_file (print_rtl
, insns
);
3833 if (graph_dump_format
!= no_graph
)
3834 print_rtl_graph_with_bb (dump_base_name
, ".cse", insns
);
3838 purge_addressof (insns
);
3839 reg_scan (insns
, max_reg_num (), 1);
3843 dump_rtl (".addressof", decl
, print_rtl
, insns
);
3844 if (graph_dump_format
!= no_graph
)
3845 print_rtl_graph_with_bb (dump_base_name
, ".addressof", insns
);
3848 /* Perform global cse. */
3850 if (optimize
> 0 && flag_gcse
)
3853 open_dump_file (".gcse", decl_printable_name (decl
, 2));
3855 TIMEVAR (gcse_time
, tem
= gcse_main (insns
, rtl_dump_file
));
3857 /* If gcse altered any jumps, rerun jump optimizations to clean
3861 TIMEVAR (jump_time
, jump_optimize (insns
, !JUMP_CROSS_JUMP
,
3863 !JUMP_AFTER_REGSCAN
));
3868 close_dump_file (print_rtl
, insns
);
3869 if (graph_dump_format
!= no_graph
)
3870 print_rtl_graph_with_bb (dump_base_name
, ".gcse", insns
);
3873 /* Move constant computations out of loops. */
3878 open_dump_file (".loop", decl_printable_name (decl
, 2));
3883 if (flag_rerun_loop_opt
)
3885 /* We only want to perform unrolling once. */
3887 loop_optimize (insns
, rtl_dump_file
, 0, 0);
3890 /* The first call to loop_optimize makes some instructions
3891 trivially dead. We delete those instructions now in the
3892 hope that doing so will make the heuristics in loop work
3893 better and possibly speed up compilation. */
3894 delete_trivially_dead_insns (insns
, max_reg_num ());
3896 /* The regscan pass is currently necessary as the alias
3897 analysis code depends on this information. */
3898 reg_scan (insns
, max_reg_num (), 1);
3900 loop_optimize (insns
, rtl_dump_file
, flag_unroll_loops
, 1);
3903 /* Dump rtl code after loop opt, if we are doing that. */
3907 close_dump_file (print_rtl
, insns
);
3908 if (graph_dump_format
!= no_graph
)
3909 print_rtl_graph_with_bb (dump_base_name
, ".loop", insns
);
3916 open_dump_file (".cse2", decl_printable_name (decl
, 2));
3918 if (flag_rerun_cse_after_loop
)
3920 /* Running another jump optimization pass before the second
3921 cse pass sometimes simplifies the RTL enough to allow
3922 the second CSE pass to do a better job. Jump_optimize can change
3923 max_reg_num so we must rerun reg_scan afterwards.
3924 ??? Rework to not call reg_scan so often. */
3925 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3926 TIMEVAR (jump_time
, jump_optimize (insns
, !JUMP_CROSS_JUMP
,
3928 JUMP_AFTER_REGSCAN
));
3930 TIMEVAR (cse2_time
, reg_scan (insns
, max_reg_num (), 0));
3931 TIMEVAR (cse2_time
, tem
= cse_main (insns
, max_reg_num (),
3934 TIMEVAR (jump_time
, jump_optimize (insns
, !JUMP_CROSS_JUMP
,
3936 !JUMP_AFTER_REGSCAN
));
3939 if (flag_thread_jumps
)
3941 /* This pass of jump threading straightens out code
3942 that was kinked by loop optimization. */
3943 TIMEVAR (jump_time
, reg_scan (insns
, max_reg_num (), 0));
3944 TIMEVAR (jump_time
, thread_jumps (insns
, max_reg_num (), 0));
3947 /* Dump rtl code after cse, if we are doing that. */
3951 close_dump_file (print_rtl
, insns
);
3952 if (graph_dump_format
!= no_graph
)
3953 print_rtl_graph_with_bb (dump_base_name
, ".cse2", insns
);
3957 if (profile_arc_flag
|| flag_test_coverage
|| flag_branch_probabilities
)
3959 if (branch_prob_dump
)
3960 open_dump_file (".bp", decl_printable_name (decl
, 2));
3965 branch_prob (insns
, rtl_dump_file
);
3968 if (branch_prob_dump
)
3970 close_dump_file (print_rtl
, insns
);
3971 if (graph_dump_format
!= no_graph
)
3972 print_rtl_graph_with_bb (dump_base_name
, ".bp", insns
);
3976 /* We are no longer anticipating cse in this function, at least. */
3978 cse_not_expected
= 1;
3980 /* Now we choose between stupid (pcc-like) register allocation
3981 (if we got the -noreg switch and not -opt)
3982 and smart register allocation. */
3984 if (optimize
> 0) /* Stupid allocation probably won't work */
3985 obey_regdecls
= 0; /* if optimizations being done. */
3989 /* Print function header into flow dump now
3990 because doing the flow analysis makes some of the dump. */
3993 open_dump_file (".flow", decl_printable_name (decl
, 2));
3999 regclass (insns
, max_reg_num ());
4000 stupid_life_analysis (insns
, max_reg_num (),
4006 /* Do control and data flow analysis,
4007 and write some of the results to dump file. */
4012 find_basic_blocks (insns
, max_reg_num (), rtl_dump_file
, 1);
4013 life_analysis (insns
, max_reg_num (), rtl_dump_file
, 1);
4016 if (warn_uninitialized
)
4018 uninitialized_vars_warning (DECL_INITIAL (decl
));
4019 setjmp_args_warning ();
4023 /* Dump rtl after flow analysis. */
4027 close_dump_file (print_rtl_with_bb
, insns
);
4028 if (graph_dump_format
!= no_graph
)
4029 print_rtl_graph_with_bb (dump_base_name
, ".flow", insns
);
4032 /* The first life analysis pass has finished. From now on we can not
4033 generate any new pseudos. */
4036 /* If -opt, try combining insns through substitution. */
4040 TIMEVAR (combine_time
, combine_instructions (insns
, max_reg_num ()));
4042 /* Dump rtl code after insn combination. */
4046 dump_rtl (".combine", decl
, print_rtl_with_bb
, insns
);
4047 if (graph_dump_format
!= no_graph
)
4048 print_rtl_graph_with_bb (dump_base_name
, ".combine", insns
);
4052 /* Register allocation pre-pass, to reduce number of moves
4053 necessary for two-address machines. */
4054 if (optimize
> 0 && (flag_regmove
|| flag_expensive_optimizations
))
4057 open_dump_file (".regmove", decl_printable_name (decl
, 2));
4059 TIMEVAR (regmove_time
, regmove_optimize (insns
, max_reg_num (),
4064 close_dump_file (print_rtl_with_bb
, insns
);
4065 if (graph_dump_format
!= no_graph
)
4066 print_rtl_graph_with_bb (dump_base_name
, ".regmove", insns
);
4070 /* Print function header into sched dump now
4071 because doing the sched analysis makes some of the dump. */
4073 if (optimize
> 0 && flag_schedule_insns
)
4076 open_dump_file (".sched", decl_printable_name (decl
, 2));
4078 /* Do control and data sched analysis,
4079 and write some of the results to dump file. */
4081 TIMEVAR (sched_time
, schedule_insns (rtl_dump_file
));
4083 /* Dump rtl after instruction scheduling. */
4087 close_dump_file (print_rtl_with_bb
, insns
);
4088 if (graph_dump_format
!= no_graph
)
4089 print_rtl_graph_with_bb (dump_base_name
, ".sched", insns
);
4093 /* Determine if the current function is a leaf before running reload
4094 since this can impact optimizations done by the prologue and
4095 epilogue thus changing register elimination offsets. */
4096 current_function_is_leaf
= leaf_function_p ();
4098 /* Unless we did stupid register allocation,
4099 allocate pseudo-regs that are used only within 1 basic block.
4101 RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
4102 jump optimizer after register allocation and reloading are finished. */
4105 TIMEVAR (local_alloc_time
,
4107 recompute_reg_usage (insns
, ! optimize_size
);
4108 regclass (insns
, max_reg_num ());
4109 rebuild_label_notes_after_reload
= local_alloc ();
4112 rebuild_label_notes_after_reload
= 0;
4114 /* Dump rtl code after allocating regs within basic blocks. */
4118 open_dump_file (".lreg", decl_printable_name (decl
, 2));
4120 TIMEVAR (dump_time
, dump_flow_info (rtl_dump_file
));
4121 TIMEVAR (dump_time
, dump_local_alloc (rtl_dump_file
));
4123 close_dump_file (print_rtl_with_bb
, insns
);
4124 if (graph_dump_format
!= no_graph
)
4125 print_rtl_graph_with_bb (dump_base_name
, ".lreg", insns
);
4128 if (global_reg_dump
)
4129 open_dump_file (".greg", decl_printable_name (decl
, 2));
4131 /* Unless we did stupid register allocation,
4132 allocate remaining pseudo-regs, then do the reload pass
4133 fixing up any insns that are invalid. */
4135 TIMEVAR (global_alloc_time
,
4138 failure
= global_alloc (rtl_dump_file
);
4140 failure
= reload (insns
, 0, rtl_dump_file
);
4145 goto exit_rest_of_compilation
;
4147 /* Do a very simple CSE pass over just the hard registers. */
4149 reload_cse_regs (insns
);
4151 /* Register allocation and reloading may have turned an indirect jump into
4152 a direct jump. If so, we must rebuild the JUMP_LABEL fields of
4153 jumping instructions. */
4154 if (rebuild_label_notes_after_reload
)
4155 TIMEVAR (jump_time
, rebuild_jump_labels (insns
));
4157 /* If optimizing and we are performing instruction scheduling after
4158 reload, then go ahead and split insns now since we are about to
4159 recompute flow information anyway.
4161 reload_cse_regs may expose more splitting opportunities, expecially
4162 for double-word operations. */
4163 if (optimize
> 0 && flag_schedule_insns_after_reload
)
4167 for (insn
= insns
; insn
; insn
= NEXT_INSN (insn
))
4171 if (GET_RTX_CLASS (GET_CODE (insn
)) != 'i')
4174 last
= try_split (PATTERN (insn
), insn
, 1);
4178 PUT_CODE (insn
, NOTE
);
4179 NOTE_SOURCE_FILE (insn
) = 0;
4180 NOTE_LINE_NUMBER (insn
) = NOTE_INSN_DELETED
;
4185 if (global_reg_dump
)
4187 TIMEVAR (dump_time
, dump_global_regs (rtl_dump_file
));
4188 close_dump_file (print_rtl_with_bb
, insns
);
4189 if (graph_dump_format
!= no_graph
)
4190 print_rtl_graph_with_bb (dump_base_name
, ".greg", insns
);
4193 /* Re-create the death notes which were deleted during reload. */
4195 open_dump_file (".flow2", decl_printable_name (decl
, 2));
4202 find_basic_blocks (insns
, max_reg_num (), rtl_dump_file
, 1);
4203 life_analysis (insns
, max_reg_num (), rtl_dump_file
, 1);
4207 flow2_completed
= 1;
4209 /* On some machines, the prologue and epilogue code, or parts thereof,
4210 can be represented as RTL. Doing so lets us schedule insns between
4211 it and the rest of the code and also allows delayed branch
4212 scheduling to operate in the epilogue. */
4214 thread_prologue_and_epilogue_insns (insns
);
4218 close_dump_file (print_rtl_with_bb
, insns
);
4219 if (graph_dump_format
!= no_graph
)
4220 print_rtl_graph_with_bb (dump_base_name
, ".flow2", insns
);
4223 #ifdef HAVE_peephole2
4224 if (optimize
> 0 && flag_peephole2
)
4227 open_dump_file (".peephole2", decl_printable_name (decl
, 2));
4229 peephole2_optimize (rtl_dump_file
);
4233 close_dump_file (print_rtl_with_bb
, insns
);
4234 if (graph_dump_format
!= no_graph
)
4235 print_rtl_graph_with_bb (dump_base_name
, ".peephole2", insns
);
4240 if (optimize
> 0 && flag_schedule_insns_after_reload
)
4243 open_dump_file (".sched2", decl_printable_name (decl
, 2));
4245 /* Do control and data sched analysis again,
4246 and write some more of the results to dump file. */
4248 TIMEVAR (sched2_time
, schedule_insns (rtl_dump_file
));
4250 /* Dump rtl after post-reorder instruction scheduling. */
4254 close_dump_file (print_rtl_with_bb
, insns
);
4255 if (graph_dump_format
!= no_graph
)
4256 print_rtl_graph_with_bb (dump_base_name
, ".sched2", insns
);
4260 #ifdef LEAF_REGISTERS
4261 current_function_uses_only_leaf_regs
4262 = optimize
> 0 && only_leaf_regs_used () && leaf_function_p ();
4265 /* One more attempt to remove jumps to .+1
4266 left by dead-store-elimination.
4267 Also do cross-jumping this time
4268 and delete no-op move insns. */
4272 TIMEVAR (jump_time
, jump_optimize (insns
, JUMP_CROSS_JUMP
,
4274 !JUMP_AFTER_REGSCAN
));
4276 /* Dump rtl code after jump, if we are doing that. */
4280 dump_rtl (".jump2", decl
, print_rtl_with_bb
, insns
);
4281 if (graph_dump_format
!= no_graph
)
4282 print_rtl_graph_with_bb (dump_base_name
, ".jump2", insns
);
4286 /* If a machine dependent reorganization is needed, call it. */
4287 #ifdef MACHINE_DEPENDENT_REORG
4288 if (mach_dep_reorg_dump
)
4289 open_dump_file (".mach", decl_printable_name (decl
, 2));
4291 MACHINE_DEPENDENT_REORG (insns
);
4293 if (mach_dep_reorg_dump
)
4295 close_dump_file (print_rtl_with_bb
, insns
);
4296 if (graph_dump_format
!= no_graph
)
4297 print_rtl_graph_with_bb (dump_base_name
, ".mach", insns
);
4301 /* If a scheduling pass for delayed branches is to be done,
4302 call the scheduling code. */
4305 if (optimize
> 0 && flag_delayed_branch
)
4308 open_dump_file (".dbr", decl_printable_name (decl
, 2));
4310 TIMEVAR (dbr_sched_time
, dbr_schedule (insns
, rtl_dump_file
));
4314 close_dump_file (print_rtl_with_bb
, insns
);
4315 if (graph_dump_format
!= no_graph
)
4316 print_rtl_graph_with_bb (dump_base_name
, ".dbr", insns
);
4321 /* Shorten branches. */
4322 TIMEVAR (shorten_branch_time
,
4324 shorten_branches (get_insns ());
4329 open_dump_file (".stack", decl_printable_name (decl
, 2));
4331 TIMEVAR (stack_reg_time
, reg_to_stack (insns
, rtl_dump_file
));
4335 dump_rtl (".stack", decl
, print_rtl_with_bb
, insns
);
4336 if (graph_dump_format
!= no_graph
)
4337 print_rtl_graph_with_bb (dump_base_name
, ".stack", insns
);
4341 /* Now turn the rtl into assembler code. */
4343 TIMEVAR (final_time
,
4348 /* Get the function's name, as described by its RTL.
4349 This may be different from the DECL_NAME name used
4350 in the source file. */
4352 x
= DECL_RTL (decl
);
4353 if (GET_CODE (x
) != MEM
)
4356 if (GET_CODE (x
) != SYMBOL_REF
)
4358 fnname
= XSTR (x
, 0);
4360 assemble_start_function (decl
, fnname
);
4361 final_start_function (insns
, asm_out_file
, optimize
);
4362 final (insns
, asm_out_file
, optimize
, 0);
4363 final_end_function (insns
, asm_out_file
, optimize
);
4364 assemble_end_function (decl
, fnname
);
4366 fflush (asm_out_file
);
4368 /* Release all memory allocated by flow. */
4369 free_basic_block_vars (0);
4371 /* Release all memory held by regsets now */
4372 regset_release_memory ();
4375 /* Write DBX symbols if requested */
4377 /* Note that for those inline functions where we don't initially
4378 know for certain that we will be generating an out-of-line copy,
4379 the first invocation of this routine (rest_of_compilation) will
4380 skip over this code by doing a `goto exit_rest_of_compilation;'.
4381 Later on, finish_compilation will call rest_of_compilation again
4382 for those inline functions that need to have out-of-line copies
4383 generated. During that call, we *will* be routed past here. */
4385 #ifdef DBX_DEBUGGING_INFO
4386 if (write_symbols
== DBX_DEBUG
)
4387 TIMEVAR (symout_time
, dbxout_function (decl
));
4390 #ifdef DWARF_DEBUGGING_INFO
4391 if (write_symbols
== DWARF_DEBUG
)
4392 TIMEVAR (symout_time
, dwarfout_file_scope_decl (decl
, 0));
4395 #ifdef DWARF2_DEBUGGING_INFO
4396 if (write_symbols
== DWARF2_DEBUG
)
4397 TIMEVAR (symout_time
, dwarf2out_decl (decl
));
4400 exit_rest_of_compilation
:
4404 /* In case the function was not output,
4405 don't leave any temporary anonymous types
4406 queued up for sdb output. */
4407 #ifdef SDB_DEBUGGING_INFO
4408 if (write_symbols
== SDB_DEBUG
)
4409 sdbout_types (NULL_TREE
);
4412 /* Put back the tree of subblocks and list of arguments
4413 from before we copied them.
4414 Code generation and the output of debugging info may have modified
4415 the copy, but the original is unchanged. */
4417 if (saved_block_tree
!= 0)
4419 DECL_INITIAL (decl
) = saved_block_tree
;
4420 DECL_ARGUMENTS (decl
) = saved_arguments
;
4421 DECL_ABSTRACT_ORIGIN (decl
) = NULL_TREE
;
4424 reload_completed
= 0;
4425 flow2_completed
= 0;
4428 TIMEVAR (final_time
,
4430 /* Clear out the insn_length contents now that they are no
4432 init_insn_lengths ();
4434 /* Clear out the real_constant_chain before some of the rtx's
4435 it runs through become garbage. */
4436 clear_const_double_mem ();
4438 /* Cancel the effect of rtl_in_current_obstack. */
4439 resume_temporary_allocation ();
4441 /* Show no temporary slots allocated. */
4445 /* Make sure volatile mem refs aren't considered valid operands for
4446 arithmetic insns. We must call this here if this is a nested inline
4447 function, since the above code leaves us in the init_recog state
4448 (from final.c), and the function context push/pop code does not
4449 save/restore volatile_ok.
4451 ??? Maybe it isn't necessary for expand_start_function to call this
4452 anymore if we do it here? */
4454 init_recog_no_volatile ();
4456 /* We're done with this function. */
4457 if (! DECL_DEFER_OUTPUT (decl
))
4458 free_after_compilation (current_function
);
4460 /* The parsing time is all the time spent in yyparse
4461 *except* what is spent in this function. */
4463 parse_time
-= get_run_time () - start_time
;
4465 /* Reset global variables. */
4466 free_basic_block_vars (0);
4477 printf ("Usage: %s input [switches]\n", progname
);
4478 printf ("Switches:\n");
4480 printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n");
4481 printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n");
4482 printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n");
4483 printf (" -finline-limit=<number> Limits the size of inlined functions to <number>\n");
4485 for (i
= NUM_ELEM (f_options
); i
--;)
4487 const char * description
= f_options
[i
].description
;
4489 if (description
!= NULL
&& * description
!= 0)
4490 printf (" -f%-21s %s\n",
4491 f_options
[i
].string
, description
);
4494 printf (" -O[number] Set optimisation level to [number]\n");
4495 printf (" -Os Optimise for space rather than speed\n");
4496 printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n");
4497 printf (" -pedantic-errors Like -pedantic except that errors are produced\n");
4498 printf (" -w Suppress warnings\n");
4499 printf (" -W Enable extra warnings\n");
4501 for (i
= NUM_ELEM (W_options
); i
--;)
4503 const char * description
= W_options
[i
].description
;
4505 if (description
!= NULL
&& * description
!= 0)
4506 printf (" -W%-21s %s\n",
4507 W_options
[i
].string
, description
);
4510 printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n");
4511 printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n");
4512 printf (" -p Enable function profiling\n");
4513 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER)
4514 printf (" -a Enable block profiling \n");
4516 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT
4517 printf (" -ax Enable jump profiling \n");
4519 printf (" -o <file> Place output into <file> \n");
4520 printf (" -G <number> Put global and static data smaller than <number>\n");
4521 printf (" bytes into a special section (on some targets)\n");
4523 for (i
= NUM_ELEM (debug_args
); i
--;)
4525 if (debug_args
[i
].description
!= NULL
)
4526 printf (" -%-22s %s\n", debug_args
[i
].arg
, debug_args
[i
].description
);
4529 printf (" -aux-info <file> Emit declaration info into <file>.X\n");
4530 printf (" -quiet Do not display functions compiled or elapsed time\n");
4531 printf (" -version Display the compiler's version\n");
4532 printf (" -d[letters] Enable dumps from specific passes of the compiler\n");
4533 printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n");
4534 #if defined INSN_SCHEDULING
4535 printf (" -sched-verbose=<number> Set the verbosity level of the scheduler\n");
4537 printf (" --help Display this information\n");
4542 /* Display descriptions of language specific options.
4543 If there is no description, note that there is an undocumented option.
4544 If the description is empty, do not display anything. (This allows
4545 options to be deliberately undocumented, for whatever reason).
4546 If the option string is missing, then this is a marker, indicating
4547 that the description string is in fact the name of a language, whose
4548 language specific options are to follow. */
4550 if (NUM_ELEM (documented_lang_options
) > 1)
4552 printf ("\nLanguage specific options:\n");
4554 for (i
= 0; i
< NUM_ELEM (documented_lang_options
); i
++)
4556 const char * description
= documented_lang_options
[i
].description
;
4557 const char * option
= documented_lang_options
[i
].option
;
4559 if (description
== NULL
)
4564 printf (" %-23.23s [undocumented]\n", option
);
4566 else if (* description
== 0)
4568 else if (option
== NULL
)
4572 ("\nThere are undocumented %s specific options as well.\n",
4576 printf ("\n Options for %s:\n", description
);
4581 printf (" %-23.23s %s\n", option
, description
);
4586 printf ("\nThere are undocumented %s specific options as well.\n", lang
);
4588 if (NUM_ELEM (target_switches
) > 1
4589 #ifdef TARGET_OPTIONS
4590 || NUM_ELEM (target_options
) > 1
4598 printf ("\nTarget specific options:\n");
4600 for (i
= NUM_ELEM (target_switches
); i
--;)
4602 const char * option
= target_switches
[i
].name
;
4603 const char * description
= target_switches
[i
].description
;
4605 if (option
== NULL
|| * option
== 0)
4607 else if (description
== NULL
)
4612 printf (" -m%-21.21s [undocumented]\n", option
);
4614 else if (* description
!= 0)
4615 doc
+= printf (" -m%-21.21s %s\n", option
, description
);
4618 #ifdef TARGET_OPTIONS
4619 for (i
= NUM_ELEM (target_options
); i
--;)
4621 const char * option
= target_options
[i
].prefix
;
4622 const char * description
= target_options
[i
].description
;
4624 if (option
== NULL
|| * option
== 0)
4626 else if (description
== NULL
)
4631 printf (" -m%-21.21s [undocumented]\n", option
);
4633 else if (* description
!= 0)
4634 doc
+= printf (" -m%-21.21s %s\n", option
, description
);
4640 printf ("\nThere are undocumented target specific options as well.\n");
4642 printf (" They exist, but they are not documented.\n");
4647 /* Compare the user specified 'option' with the language
4648 specific 'lang_option'. Return true if they match, or
4649 if 'option' is a viable prefix of 'lang_option'. */
4652 check_lang_option (option
, lang_option
)
4656 lang_independent_options
* indep_options
;
4661 /* Ignore NULL entries. */
4662 if (option
== NULL
|| lang_option
== NULL
)
4665 if ((space
= strchr (lang_option
, ' ')) != NULL
)
4666 len
= space
- lang_option
;
4668 len
= strlen (lang_option
);
4670 /* If they do not match to the first n characters then fail. */
4671 if (strncmp (option
, lang_option
, len
) != 0)
4674 /* Do not accept a lang option, if it matches a normal -f or -W
4675 option. Chill defines a -fpack, but we want to support
4678 /* An exact match is OK */
4679 if ((int) strlen (option
) == len
)
4682 /* If it is not an -f or -W option allow the match */
4683 if (option
[0] != '-')
4688 case 'f': indep_options
= f_options
; break;
4689 case 'W': indep_options
= W_options
; break;
4693 /* The option is a -f or -W option.
4694 Skip past the prefix and search for the remainder in the
4695 appropriate table of options. */
4698 if (option
[0] == 'n' && option
[1] == 'o' && option
[2] == '-')
4701 for (k
= NUM_ELEM (indep_options
); k
--;)
4703 if (!strcmp (option
, indep_options
[k
].string
))
4705 /* The option matched a language independent option,
4706 do not allow the language specific match. */
4712 /* The option matches the start of the langauge specific option
4713 and it is not an exact match for a language independent option. */
4717 /* Entry point of cc1/c++. Decode command args, then call compile_file.
4718 Exit code is 35 if can't open files, 34 if fatal error,
4719 33 if had nonfatal errors, else success. */
4728 int flag_print_mem
= 0;
4729 int version_flag
= 0;
4732 /* save in case md file wants to emit args as a comment. */
4736 p
= argv
[0] + strlen (argv
[0]);
4737 while (p
!= argv
[0] && p
[-1] != '/'
4738 #ifdef DIR_SEPARATOR
4739 && p
[-1] != DIR_SEPARATOR
4745 #if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
4746 /* Get rid of any avoidable limit on stack size. */
4750 /* Set the stack limit huge so that alloca does not fail. */
4751 getrlimit (RLIMIT_STACK
, &rlim
);
4752 rlim
.rlim_cur
= rlim
.rlim_max
;
4753 setrlimit (RLIMIT_STACK
, &rlim
);
4757 #ifdef HAVE_LC_MESSAGES
4758 setlocale (LC_MESSAGES
, "");
4760 (void) bindtextdomain (PACKAGE
, localedir
);
4761 (void) textdomain (PACKAGE
);
4763 signal (SIGFPE
, float_signal
);
4766 signal (SIGPIPE
, pipe_closed
);
4769 decl_printable_name
= decl_name
;
4770 lang_expand_expr
= (lang_expand_expr_t
) do_abort
;
4772 /* Initialize whether `char' is signed. */
4773 flag_signed_char
= DEFAULT_SIGNED_CHAR
;
4774 #ifdef DEFAULT_SHORT_ENUMS
4775 /* Initialize how much space enums occupy, by default. */
4776 flag_short_enums
= DEFAULT_SHORT_ENUMS
;
4779 /* Perform language-specific options intialization. */
4780 lang_init_options ();
4782 /* Scan to see what optimization level has been specified. That will
4783 determine the default value of many flags. */
4784 for (i
= 1; i
< argc
; i
++)
4786 if (!strcmp (argv
[i
], "-O"))
4791 else if (argv
[i
][0] == '-' && argv
[i
][1] == 'O')
4793 /* Handle -Os, -O2, -O3, -O69, ... */
4794 char *p
= &argv
[i
][2];
4796 if ((p
[0] == 's') && (p
[1] == 0))
4800 /* Optimizing for size forces optimize to be 2. */
4805 const int optimize_val
= read_integral_parameter (p
, p
- 2, -1);
4806 if (optimize_val
!= -1)
4808 optimize
= optimize_val
;
4815 obey_regdecls
= (optimize
== 0);
4820 flag_thread_jumps
= 1;
4822 flag_delayed_branch
= 1;
4824 #ifdef CAN_DEBUG_WITHOUT_FP
4825 flag_omit_frame_pointer
= 1;
4831 flag_cse_follow_jumps
= 1;
4832 flag_cse_skip_blocks
= 1;
4834 flag_expensive_optimizations
= 1;
4835 flag_strength_reduce
= 1;
4836 flag_rerun_cse_after_loop
= 1;
4837 flag_rerun_loop_opt
= 1;
4838 flag_caller_saves
= 1;
4841 #ifdef INSN_SCHEDULING
4842 flag_schedule_insns
= 1;
4843 flag_schedule_insns_after_reload
= 1;
4846 flag_strict_aliasing
= 1;
4851 flag_inline_functions
= 1;
4854 if (optimize
< 2 || optimize_size
)
4859 align_functions
= 1;
4862 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
4865 set_target_switch ("");
4867 #ifdef OPTIMIZATION_OPTIONS
4868 /* Allow default optimizations to be specified on a per-machine basis. */
4869 OPTIMIZATION_OPTIONS (optimize
, optimize_size
);
4872 /* Initialize register usage now so switches may override. */
4875 for (i
= 1; i
< argc
; i
++)
4879 /* If this is a language-specific option,
4880 decode it in a language-specific way. */
4881 for (j
= NUM_ELEM (documented_lang_options
); j
--;)
4882 if (check_lang_option (argv
[i
], documented_lang_options
[j
].option
))
4885 if (j
!= (size_t)-1)
4887 /* If the option is valid for *some* language,
4888 treat it as valid even if this language doesn't understand it. */
4889 int strings_processed
= lang_decode_option (argc
- i
, argv
+ i
);
4891 if (!strcmp (argv
[i
], "--help"))
4897 if (strings_processed
!= 0)
4898 i
+= strings_processed
- 1;
4900 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0)
4902 register char *str
= argv
[i
] + 1;
4907 set_target_switch (&str
[1]);
4908 else if (!strcmp (str
, "dumpbase"))
4910 dump_base_name
= argv
[++i
];
4912 else if (str
[0] == 'd')
4914 register char *p
= &str
[1];
4919 branch_prob_dump
= 1;
4926 global_reg_dump
= 1;
4934 cse_dump
= 1, cse2_dump
= 1;
4941 #ifdef MACHINE_DEPENDENT_REORG
4942 mach_dep_reorg_dump
= 1;
4950 branch_prob_dump
= 1;
4967 global_reg_dump
= 1;
4992 #ifdef MACHINE_DEPENDENT_REORG
4994 mach_dep_reorg_dump
= 1;
4998 flag_print_asm_name
= 1;
5019 graph_dump_format
= vcg
;
5025 rtl_dump_and_exit
= 1;
5033 case 'D': /* these are handled by the preprocessor */
5037 warning ("unrecognised gcc debugging option: %c", p
[-1]);
5041 else if (str
[0] == 'f')
5043 register char *p
= &str
[1];
5046 /* Some kind of -f option.
5047 P's value is the option sans `-f'.
5048 Search for it in the table of options. */
5051 !found
&& j
< sizeof (f_options
) / sizeof (f_options
[0]);
5054 if (!strcmp (p
, f_options
[j
].string
))
5056 *f_options
[j
].variable
= f_options
[j
].on_value
;
5057 /* A goto here would be cleaner,
5058 but breaks the vax pcc. */
5061 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
5062 && ! strcmp (p
+3, f_options
[j
].string
))
5064 *f_options
[j
].variable
= ! f_options
[j
].on_value
;
5071 else if (!strncmp (p
, "inline-limit-", 13)
5072 || !strncmp (p
, "inline-limit=", 13))
5074 read_integral_parameter (p
+ 13, p
- 2, inline_max_insns
);
5075 #ifdef INSN_SCHEDULING
5076 else if (!strncmp (p
, "sched-verbose=",14))
5077 fix_sched_param("verbose",&p
[14]);
5079 else if (!strncmp (p
, "fixed-", 6))
5080 fix_register (&p
[6], 1, 1);
5081 else if (!strncmp (p
, "call-used-", 10))
5082 fix_register (&p
[10], 0, 1);
5083 else if (!strncmp (p
, "call-saved-", 11))
5084 fix_register (&p
[11], 0, 0);
5085 else if (!strncmp (p
, "align-loops=", 12))
5086 align_loops
= read_integral_parameter (p
+ 12, p
- 2,
5088 else if (!strncmp (p
, "align-functions=", 16))
5089 align_functions
= read_integral_parameter (p
+ 16, p
- 2,
5091 else if (!strncmp (p
, "align-jumps=", 12))
5092 align_jumps
= read_integral_parameter (p
+ 12, p
- 2,
5094 else if (!strncmp (p
, "align-labels=", 13))
5095 align_labels
= read_integral_parameter (p
+ 13, p
- 2,
5098 error ("Invalid option `%s'", argv
[i
]);
5100 else if (str
[0] == 'O')
5102 /* Already been treated above. Do nothing. */
5104 else if (!strcmp (str
, "pedantic"))
5106 else if (!strcmp (str
, "pedantic-errors"))
5107 flag_pedantic_errors
= pedantic
= 1;
5108 else if (!strcmp (str
, "quiet"))
5110 else if (!strcmp (str
, "version"))
5112 else if (!strcmp (str
, "w"))
5113 inhibit_warnings
= 1;
5114 else if (!strcmp (str
, "W"))
5117 /* We save the value of warn_uninitialized, since if they put
5118 -Wuninitialized on the command line, we need to generate a
5119 warning about not using it without also specifying -O. */
5120 if (warn_uninitialized
!= 1)
5121 warn_uninitialized
= 2;
5123 else if (str
[0] == 'W')
5125 register char *p
= &str
[1];
5128 /* Some kind of -W option.
5129 P's value is the option sans `-W'.
5130 Search for it in the table of options. */
5133 !found
&& j
< sizeof (W_options
) / sizeof (W_options
[0]);
5136 if (!strcmp (p
, W_options
[j
].string
))
5138 *W_options
[j
].variable
= W_options
[j
].on_value
;
5139 /* A goto here would be cleaner,
5140 but breaks the vax pcc. */
5143 if (p
[0] == 'n' && p
[1] == 'o' && p
[2] == '-'
5144 && ! strcmp (p
+3, W_options
[j
].string
))
5146 *W_options
[j
].variable
= ! W_options
[j
].on_value
;
5153 else if (!strncmp (p
, "id-clash-", 9))
5155 const int id_clash_val
5156 = read_integral_parameter (p
+ 9, p
- 2, -1);
5157 if (id_clash_val
!= -1)
5159 id_clash_len
= id_clash_val
;
5163 else if (!strncmp (p
, "larger-than-", 12))
5165 const int larger_than_val
5166 = read_integral_parameter (p
+ 12, p
- 2, -1);
5167 if (larger_than_val
!= -1)
5169 larger_than_size
= larger_than_val
;
5170 warn_larger_than
= 1;
5174 error ("Invalid option `%s'", argv
[i
]);
5176 else if (!strcmp (str
, "p"))
5180 else if (!strcmp (str
, "a"))
5182 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5183 warning ("`-a' option (basic block profile) not supported");
5185 profile_block_flag
= (profile_block_flag
< 2) ? 1 : 3;
5188 else if (!strcmp (str
, "ax"))
5190 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5191 warning ("`-ax' option (jump profiling) not supported");
5193 profile_block_flag
= (!profile_block_flag
5194 || profile_block_flag
== 2) ? 2 : 3;
5197 else if (str
[0] == 'g')
5200 /* A lot of code assumes write_symbols == NO_DEBUG if the
5201 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
5202 of what debugging type has been selected). This records the
5203 selected type. It is an error to specify more than one
5205 static enum debug_info_type selected_debug_type
= NO_DEBUG
;
5206 /* Non-zero if debugging format has been explicitly set.
5207 -g and -ggdb don't explicitly set the debugging format so
5208 -gdwarf -g3 is equivalent to -gdwarf3. */
5209 static int type_explicitly_set_p
= 0;
5210 /* Indexed by enum debug_info_type. */
5211 static const char *debug_type_names
[] =
5213 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
5216 /* The maximum admissible debug level value. */
5217 static const unsigned max_debug_level
= 3;
5219 /* Look up STR in the table. */
5220 for (da
= debug_args
; da
->arg
; da
++)
5222 const int da_len
= strlen (da
->arg
);
5224 if (! strncmp (str
, da
->arg
, da_len
))
5226 enum debug_info_type type
= da
->debug_type
;
5227 const char *p
= str
+ da_len
;
5229 if (*p
&& (*p
< '0' || *p
> '9'))
5232 /* A debug flag without a level defaults to level 2.
5233 Note we do not want to call read_integral_parameter
5234 for that case since it will call atoi which
5237 ??? We may want to generalize the interface to
5238 read_integral_parameter to better handle this case
5239 if this case shows up often. */
5241 level
= read_integral_parameter (p
, 0,
5242 max_debug_level
+ 1);
5246 if (da_len
> 1 && *p
&& !strncmp (str
, "gdwarf", da_len
))
5248 error ("use -gdwarf -g%d for DWARF v1, level %d",
5251 error ("use -gdwarf-2 for DWARF v2");
5254 if (level
> max_debug_level
)
5256 warning ("ignoring option `%s' due to invalid debug level specification",
5258 level
= debug_info_level
;
5261 if (type
== NO_DEBUG
)
5263 type
= PREFERRED_DEBUGGING_TYPE
;
5264 if (da_len
> 1 && strncmp (str
, "ggdb", da_len
) == 0)
5266 #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2)
5267 type
= DWARF2_DEBUG
;
5269 #ifdef DBX_DEBUGGING_INFO
5276 if (type
== NO_DEBUG
)
5277 warning ("`-%s' not supported by this configuration of GCC",
5280 /* Does it conflict with an already selected type? */
5281 if (type_explicitly_set_p
5282 /* -g/-ggdb don't conflict with anything */
5283 && da
->debug_type
!= NO_DEBUG
5284 && type
!= selected_debug_type
)
5285 warning ("`-%s' ignored, conflicts with `-g%s'",
5286 str
, debug_type_names
[(int) selected_debug_type
]);
5289 /* If the format has already been set, -g/-ggdb
5290 only change the debug level. */
5291 if (type_explicitly_set_p
5292 && da
->debug_type
== NO_DEBUG
)
5293 ; /* don't change debugging type */
5296 selected_debug_type
= type
;
5297 type_explicitly_set_p
= da
->debug_type
!= NO_DEBUG
;
5299 write_symbols
= (level
== 0
5301 : selected_debug_type
);
5302 use_gnu_debug_info_extensions
= da
->use_extensions_p
;
5303 debug_info_level
= (enum debug_info_level
) level
;
5309 warning ("`-%s' not supported by this configuration of GCC",
5312 else if (!strcmp (str
, "o"))
5314 asm_file_name
= argv
[++i
];
5316 else if (str
[0] == 'G')
5318 const int g_switch_val
= (str
[1] != '\0') ?
5319 read_integral_parameter(str
+ 1, 0, -1) :
5320 read_integral_parameter(argv
[++i
], 0, -1);
5322 if (g_switch_val
!= -1)
5324 g_switch_set
= TRUE
;
5325 g_switch_value
= g_switch_val
;
5329 error("Invalid option `-%s'",str
);
5332 else if (!strncmp (str
, "aux-info", 8))
5334 flag_gen_aux_info
= 1;
5335 aux_info_file_name
= (str
[8] != '\0' ? str
+8 : argv
[++i
]);
5337 else if (!strcmp (str
, "-help"))
5343 error ("Invalid option `%s'", argv
[i
]);
5345 else if (argv
[i
][0] == '+')
5346 error ("Invalid option `%s'", argv
[i
]);
5351 /* Checker uses the frame pointer. */
5352 if (flag_check_memory_usage
)
5353 flag_omit_frame_pointer
= 0;
5357 /* Inlining does not work if not optimizing,
5358 so force it not to be done. */
5362 /* The c_decode_option and lang_decode_option functions set
5363 this to `2' if -Wall is used, so we can avoid giving out
5364 lots of errors for people who don't realize what -Wall does. */
5365 if (warn_uninitialized
== 1)
5366 warning ("-Wuninitialized is not supported without -O");
5369 #ifdef OVERRIDE_OPTIONS
5370 /* Some machines may reject certain combinations of options. */
5374 if (exceptions_via_longjmp
== 2)
5376 #ifdef DWARF2_UNWIND_INFO
5377 exceptions_via_longjmp
= ! DWARF2_UNWIND_INFO
;
5379 exceptions_via_longjmp
= 1;
5383 /* Set up the align_*_log variables, defaulting them to 1 if they
5384 were still unset. */
5385 if (align_loops
<= 0) align_loops
= 1;
5386 align_loops_log
= floor_log2 (align_loops
*2-1);
5387 if (align_jumps
<= 0) align_jumps
= 1;
5388 align_jumps_log
= floor_log2 (align_jumps
*2-1);
5389 if (align_labels
<= 0) align_labels
= 1;
5390 align_labels_log
= floor_log2 (align_labels
*2-1);
5391 if (align_functions
<= 0) align_functions
= 1;
5392 align_functions_log
= floor_log2 (align_functions
*2-1);
5394 if (profile_block_flag
== 3)
5396 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
5397 profile_block_flag
= 2;
5400 /* Unrolling all loops implies that standard loop unrolling must also
5402 if (flag_unroll_all_loops
)
5403 flag_unroll_loops
= 1;
5404 /* Loop unrolling requires that strength_reduction be on also. Silently
5405 turn on strength reduction here if it isn't already on. Also, the loop
5406 unrolling code assumes that cse will be run after loop, so that must
5407 be turned on also. */
5408 if (flag_unroll_loops
)
5410 flag_strength_reduce
= 1;
5411 flag_rerun_cse_after_loop
= 1;
5414 /* Warn about options that are not supported on this machine. */
5415 #ifndef INSN_SCHEDULING
5416 if (flag_schedule_insns
|| flag_schedule_insns_after_reload
)
5417 warning ("instruction scheduling not supported on this target machine");
5420 if (flag_delayed_branch
)
5421 warning ("this target machine does not have delayed branches");
5424 user_label_prefix
= USER_LABEL_PREFIX
;
5425 if (flag_leading_underscore
!= -1)
5427 /* If the default prefix is more complicated than "" or "_",
5428 issue a warning and ignore this option. */
5429 if (user_label_prefix
[0] == 0 ||
5430 (user_label_prefix
[0] == '_' && user_label_prefix
[1] == 0))
5432 user_label_prefix
= flag_leading_underscore
? "_" : "";
5435 warning ("-f%sleading-underscore not supported on this target machine",
5436 flag_leading_underscore
? "" : "no-");
5439 /* If we are in verbose mode, write out the version and maybe all the
5440 option flags in use. */
5443 print_version (stderr
, "");
5445 print_switch_values (stderr
, 0, MAX_LINE
, "", " ", "\n");
5448 compile_file (filename
);
5450 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX)
5453 char *lim
= (char *) sbrk (0);
5455 notice ("Data size %ld.\n", (long) (lim
- (char *) &environ
));
5460 system ("ps -l 1>&2");
5463 #endif /* not USG */
5466 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */
5469 exit (FATAL_EXIT_CODE
);
5471 exit (FATAL_EXIT_CODE
);
5472 exit (SUCCESS_EXIT_CODE
);
5476 /* Decode -m switches. */
5477 /* Decode the switch -mNAME. */
5480 set_target_switch (name
)
5484 int valid_target_option
= 0;
5486 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
5487 if (!strcmp (target_switches
[j
].name
, name
))
5489 if (target_switches
[j
].value
< 0)
5490 target_flags
&= ~-target_switches
[j
].value
;
5492 target_flags
|= target_switches
[j
].value
;
5493 valid_target_option
= 1;
5496 #ifdef TARGET_OPTIONS
5497 if (!valid_target_option
)
5498 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
5500 int len
= strlen (target_options
[j
].prefix
);
5501 if (!strncmp (target_options
[j
].prefix
, name
, len
))
5503 *target_options
[j
].variable
= name
+ len
;
5504 valid_target_option
= 1;
5509 if (!valid_target_option
)
5510 error ("Invalid option `%s'", name
);
5513 /* Print version information to FILE.
5514 Each line begins with INDENT (for the case where FILE is the
5515 assembler output file). */
5518 print_version (file
, indent
)
5523 #define __VERSION__ "[?]"
5527 "%s%s%s version %s (%s) compiled by GNU C version %s.\n"
5529 "%s%s%s version %s (%s) compiled by CC.\n"
5531 , indent
, *indent
!= 0 ? " " : "",
5532 language_string
, version_string
, TARGET_NAME
, __VERSION__
);
5535 /* Print an option value and return the adjusted position in the line.
5536 ??? We don't handle error returns from fprintf (disk full); presumably
5537 other code will catch a disk full though. */
5540 print_single_switch (file
, pos
, max
, indent
, sep
, term
, type
, name
)
5543 const char *indent
, *sep
, *term
, *type
, *name
;
5545 /* The ultrix fprintf returns 0 on success, so compute the result we want
5546 here since we need it for the following test. */
5547 int len
= strlen (sep
) + strlen (type
) + strlen (name
);
5552 fprintf (file
, "%s", term
);
5557 fprintf (file
, "%s", indent
);
5558 pos
= strlen (indent
);
5560 fprintf (file
, "%s%s%s", sep
, type
, name
);
5565 /* Print active target switches to FILE.
5566 POS is the current cursor position and MAX is the size of a "line".
5567 Each line begins with INDENT and ends with TERM.
5568 Each switch is separated from the next by SEP. */
5571 print_switch_values (file
, pos
, max
, indent
, sep
, term
)
5574 const char *indent
, *sep
, *term
;
5579 /* Print the options as passed. */
5581 pos
= print_single_switch (file
, pos
, max
, indent
, *indent
? " " : "", term
,
5582 _("options passed: "), "");
5584 for (p
= &save_argv
[1]; *p
!= NULL
; p
++)
5588 if (strcmp (*p
, "-o") == 0)
5594 if (strcmp (*p
, "-quiet") == 0)
5596 if (strcmp (*p
, "-version") == 0)
5601 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
, *p
, "");
5604 fprintf (file
, "%s", term
);
5606 /* Print the -f and -m options that have been enabled.
5607 We don't handle language specific options but printing argv
5610 pos
= print_single_switch (file
, 0, max
, indent
, *indent
? " " : "", term
,
5611 _("options enabled: "), "");
5613 for (j
= 0; j
< sizeof f_options
/ sizeof f_options
[0]; j
++)
5614 if (*f_options
[j
].variable
== f_options
[j
].on_value
)
5615 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
5616 "-f", f_options
[j
].string
);
5618 /* Print target specific options. */
5620 for (j
= 0; j
< sizeof target_switches
/ sizeof target_switches
[0]; j
++)
5621 if (target_switches
[j
].name
[0] != '\0'
5622 && target_switches
[j
].value
> 0
5623 && ((target_switches
[j
].value
& target_flags
)
5624 == target_switches
[j
].value
))
5626 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
5627 "-m", target_switches
[j
].name
);
5630 #ifdef TARGET_OPTIONS
5631 for (j
= 0; j
< sizeof target_options
/ sizeof target_options
[0]; j
++)
5632 if (*target_options
[j
].variable
!= NULL
)
5635 sprintf (prefix
, "-m%s", target_options
[j
].prefix
);
5636 pos
= print_single_switch (file
, pos
, max
, indent
, sep
, term
,
5637 prefix
, *target_options
[j
].variable
);
5641 fprintf (file
, "%s", term
);
5644 /* Record the beginning of a new source file, named FILENAME. */
5647 debug_start_source_file (filename
)
5648 register char *filename ATTRIBUTE_UNUSED
;
5650 #ifdef DBX_DEBUGGING_INFO
5651 if (write_symbols
== DBX_DEBUG
)
5652 dbxout_start_new_source_file (filename
);
5654 #ifdef DWARF_DEBUGGING_INFO
5655 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5656 && write_symbols
== DWARF_DEBUG
)
5657 dwarfout_start_new_source_file (filename
);
5658 #endif /* DWARF_DEBUGGING_INFO */
5659 #ifdef DWARF2_DEBUGGING_INFO
5660 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5661 && write_symbols
== DWARF2_DEBUG
)
5662 dwarf2out_start_source_file (filename
);
5663 #endif /* DWARF2_DEBUGGING_INFO */
5664 #ifdef SDB_DEBUGGING_INFO
5665 if (write_symbols
== SDB_DEBUG
)
5666 sdbout_start_new_source_file (filename
);
5670 /* Record the resumption of a source file. LINENO is the line number in
5671 the source file we are returning to. */
5674 debug_end_source_file (lineno
)
5675 register unsigned lineno ATTRIBUTE_UNUSED
;
5677 #ifdef DBX_DEBUGGING_INFO
5678 if (write_symbols
== DBX_DEBUG
)
5679 dbxout_resume_previous_source_file ();
5681 #ifdef DWARF_DEBUGGING_INFO
5682 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5683 && write_symbols
== DWARF_DEBUG
)
5684 dwarfout_resume_previous_source_file (lineno
);
5685 #endif /* DWARF_DEBUGGING_INFO */
5686 #ifdef DWARF2_DEBUGGING_INFO
5687 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5688 && write_symbols
== DWARF2_DEBUG
)
5689 dwarf2out_end_source_file ();
5690 #endif /* DWARF2_DEBUGGING_INFO */
5691 #ifdef SDB_DEBUGGING_INFO
5692 if (write_symbols
== SDB_DEBUG
)
5693 sdbout_resume_previous_source_file ();
5697 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5698 the tail part of the directive line, i.e. the part which is past the
5699 initial whitespace, #, whitespace, directive-name, whitespace part. */
5702 debug_define (lineno
, buffer
)
5703 register unsigned lineno ATTRIBUTE_UNUSED
;
5704 register char *buffer ATTRIBUTE_UNUSED
;
5706 #ifdef DWARF_DEBUGGING_INFO
5707 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5708 && write_symbols
== DWARF_DEBUG
)
5709 dwarfout_define (lineno
, buffer
);
5710 #endif /* DWARF_DEBUGGING_INFO */
5711 #ifdef DWARF2_DEBUGGING_INFO
5712 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5713 && write_symbols
== DWARF2_DEBUG
)
5714 dwarf2out_define (lineno
, buffer
);
5715 #endif /* DWARF2_DEBUGGING_INFO */
5718 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5719 the tail part of the directive line, i.e. the part which is past the
5720 initial whitespace, #, whitespace, directive-name, whitespace part. */
5723 debug_undef (lineno
, buffer
)
5724 register unsigned lineno ATTRIBUTE_UNUSED
;
5725 register char *buffer ATTRIBUTE_UNUSED
;
5727 #ifdef DWARF_DEBUGGING_INFO
5728 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5729 && write_symbols
== DWARF_DEBUG
)
5730 dwarfout_undef (lineno
, buffer
);
5731 #endif /* DWARF_DEBUGGING_INFO */
5732 #ifdef DWARF2_DEBUGGING_INFO
5733 if (debug_info_level
== DINFO_LEVEL_VERBOSE
5734 && write_symbols
== DWARF2_DEBUG
)
5735 dwarf2out_undef (lineno
, buffer
);
5736 #endif /* DWARF2_DEBUGGING_INFO */