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 /* Mark P for GC. Also mark main_input_filename and input_filename. */
1501 struct file_stack *stack = *(struct file_stack **)p;
1503 /* We're only called for input_file_stack, so we can mark the current
1504 input_filename here as well. */
1505 ggc_mark_string (main_input_filename);
1506 ggc_mark_string (input_filename);
1510 ggc_mark_string (stack->name);
1511 stack = stack->next;
1515 static int need_error_newline;
1517 /* Function of last error message;
1518 more generally, function such that if next error message is in it
1519 then we don't have to mention the function name. */
1520 static tree last_error_function = NULL;
1522 /* Used to detect when input_file_stack has changed since last described. */
1523 static int last_error_tick;
1525 /* Called when the start of a function definition is parsed,
1526 this function prints on stderr the name of the function. */
1529 announce_function (decl)
1534 if (rtl_dump_and_exit)
1535 fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
1537 fprintf (stderr, " %s", (*decl_printable_name) (decl, 2));
1539 need_error_newline = 1;
1540 last_error_function = current_function_decl;
1544 /* The default function to print out name of current function that caused
1548 default_print_error_function (file)
1551 if (last_error_function != current_function_decl)
1554 fprintf (stderr, "%s: ", file);
1556 if (current_function_decl == NULL)
1557 notice ("At top level:\n");
1559 notice ((TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE
1560 ? "In method `%s':\n"
1561 : "In function `%s':\n"),
1562 (*decl_printable_name) (current_function_decl, 2));
1564 last_error_function = current_function_decl;
1568 /* Called by report_error_function to print out function name.
1569 * Default may be overridden by language front-ends. */
1571 void (*print_error_function) PROTO((const char *)) =
1572 default_print_error_function;
1574 /* Prints out, if necessary, the name of the current function
1575 that caused an error. Called from all error and warning functions.
1576 We ignore the FILE parameter, as it cannot be relied upon. */
1579 report_error_function (file)
1580 const char *file ATTRIBUTE_UNUSED;
1582 struct file_stack *p;
1584 if (need_error_newline)
1586 fprintf (stderr, "\n");
1587 need_error_newline = 0;
1590 if (input_file_stack && input_file_stack->next != 0
1591 && input_file_stack_tick != last_error_tick)
1593 for (p = input_file_stack->next; p; p = p->next)
1594 notice ((p == input_file_stack->next
1595 ? "In file included from %s:%d"
1596 : ",\n from %s:%d"),
1598 fprintf (stderr, ":\n");
1599 last_error_tick = input_file_stack_tick;
1602 (*print_error_function) (input_filename);
1605 /* Print a message. */
1608 vnotice (file, msgid, ap)
1613 vfprintf (file, _(msgid), ap);
1617 notice VPROTO((const char *msgid, ...))
1619 #ifndef ANSI_PROTOTYPES
1624 VA_START (ap, msgid);
1626 #ifndef ANSI_PROTOTYPES
1627 msgid = va_arg (ap, char *);
1630 vnotice (stderr, msgid, ap);
1635 fnotice VPROTO((FILE *file, const char *msgid, ...))
1637 #ifndef ANSI_PROTOTYPES
1643 VA_START (ap, msgid);
1645 #ifndef ANSI_PROTOTYPES
1646 file = va_arg (ap, FILE *);
1647 msgid = va_arg (ap, const char *);
1650 vnotice (file, msgid, ap);
1654 /* Report FILE and LINE (or program name), and optionally just WARN. */
1657 report_file_and_line (file, line, warn)
1663 fprintf (stderr, "%s:%d: ", file, line);
1665 fprintf (stderr, "%s: ", progname);
1668 notice ("warning: ");
1671 /* Print a message. */
1674 vmessage (prefix, msgid, ap)
1680 fprintf (stderr, "%s: ", prefix);
1682 vfprintf (stderr, msgid, ap);
1685 /* Print a message relevant to line LINE of file FILE. */
1688 v_message_with_file_and_line (file, line, warn, msgid, ap)
1695 report_file_and_line (file, line, warn);
1696 vnotice (stderr, msgid, ap);
1697 fputc ('\n', stderr);
1700 /* Print a message relevant to the given DECL. */
1703 v_message_with_decl (decl, warn, msgid, ap)
1711 report_file_and_line (DECL_SOURCE_FILE (decl),
1712 DECL_SOURCE_LINE (decl), warn);
1714 /* Do magic to get around lack of varargs support for insertion
1715 of arguments into existing list. We know that the decl is first;
1716 we ass_u_me that it will be printed with "%s". */
1718 for (p = _(msgid); *p; ++p)
1722 if (*(p + 1) == '%')
1724 else if (*(p + 1) != 's')
1731 if (p > _(msgid)) /* Print the left-hand substring. */
1733 char fmt[sizeof "%.255s"];
1734 long width = p - _(msgid);
1736 if (width > 255L) width = 255L; /* arbitrary */
1737 sprintf (fmt, "%%.%lds", width);
1738 fprintf (stderr, fmt, _(msgid));
1741 if (*p == '%') /* Print the name. */
1743 const char *n = (DECL_NAME (decl)
1744 ? (*decl_printable_name) (decl, 2)
1750 if (ISALPHA (*(p - 1) & 0xFF))
1755 if (*p) /* Print the rest of the message. */
1756 vmessage ((char *)NULL, p, ap);
1758 fputc ('\n', stderr);
1761 /* Figure file and line of the given INSN. */
1764 file_and_line_for_asm (insn, pfile, pline)
1769 rtx body = PATTERN (insn);
1772 /* Find the (or one of the) ASM_OPERANDS in the insn. */
1773 if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
1774 asmop = SET_SRC (body);
1775 else if (GET_CODE (body) == ASM_OPERANDS)
1777 else if (GET_CODE (body) == PARALLEL
1778 && GET_CODE (XVECEXP (body, 0, 0)) == SET)
1779 asmop = SET_SRC (XVECEXP (body, 0, 0));
1780 else if (GET_CODE (body) == PARALLEL
1781 && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
1782 asmop = XVECEXP (body, 0, 0);
1788 *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
1789 *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
1793 *pfile = input_filename;
1798 /* Report an error at line LINE of file FILE. */
1801 v_error_with_file_and_line (file, line, msgid, ap)
1808 report_error_function (file);
1809 v_message_with_file_and_line (file, line, 0, msgid, ap);
1813 error_with_file_and_line VPROTO((const char *file, int line,
1814 const char *msgid, ...))
1816 #ifndef ANSI_PROTOTYPES
1823 VA_START (ap, msgid);
1825 #ifndef ANSI_PROTOTYPES
1826 file = va_arg (ap, const char *);
1827 line = va_arg (ap, int);
1828 msgid = va_arg (ap, const char *);
1831 v_error_with_file_and_line (file, line, msgid, ap);
1835 /* Report an error at the declaration DECL.
1836 MSGID is a format string which uses %s to substitute the declaration
1837 name; subsequent substitutions are a la printf. */
1840 v_error_with_decl (decl, msgid, ap)
1846 report_error_function (DECL_SOURCE_FILE (decl));
1847 v_message_with_decl (decl, 0, msgid, ap);
1851 error_with_decl VPROTO((tree decl, const char *msgid, ...))
1853 #ifndef ANSI_PROTOTYPES
1859 VA_START (ap, msgid);
1861 #ifndef ANSI_PROTOTYPES
1862 decl = va_arg (ap, tree);
1863 msgid = va_arg (ap, const char *);
1866 v_error_with_decl (decl, msgid, ap);
1870 /* Report an error at the line number of the insn INSN.
1871 This is used only when INSN is an `asm' with operands,
1872 and each ASM_OPERANDS records its own source file and line. */
1875 v_error_for_asm (insn, msgid, ap)
1884 file_and_line_for_asm (insn, &file, &line);
1885 report_error_function (file);
1886 v_message_with_file_and_line (file, line, 0, msgid, ap);
1890 error_for_asm VPROTO((rtx insn, const char *msgid, ...))
1892 #ifndef ANSI_PROTOTYPES
1898 VA_START (ap, msgid);
1900 #ifndef ANSI_PROTOTYPES
1901 insn = va_arg (ap, rtx);
1902 msgid = va_arg (ap, const char *);
1905 v_error_for_asm (insn, msgid, ap);
1909 /* Report an error at the current line number. */
1916 v_error_with_file_and_line (input_filename, lineno, msgid, ap);
1920 error VPROTO((const char *msgid, ...))
1922 #ifndef ANSI_PROTOTYPES
1927 VA_START (ap, msgid);
1929 #ifndef ANSI_PROTOTYPES
1930 msgid = va_arg (ap, const char *);
1937 /* Report a fatal error at the current line number. Allow a front end to
1938 intercept the message. */
1940 static void (*fatal_function) PROTO((const char *, va_list));
1942 /* Set the function to call when a fatal error occurs. */
1945 set_fatal_function (f)
1946 void (*f) PROTO((char *, va_list));
1956 if (fatal_function != 0)
1957 (*fatal_function) (_(msgid), ap);
1960 exit (FATAL_EXIT_CODE);
1964 fatal VPROTO((const char *msgid, ...))
1966 #ifndef ANSI_PROTOTYPES
1971 VA_START (ap, msgid);
1973 #ifndef ANSI_PROTOTYPES
1974 msgid = va_arg (ap, const char *);
1982 _fatal_insn (msgid, insn, file, line, function)
1987 const char *function;
1991 fancy_abort (file, line, function);
1995 _fatal_insn_not_found (insn, file, line, function)
1999 const char *function;
2001 if (INSN_CODE (insn) < 0)
2002 _fatal_insn ("Unrecognizable insn:", insn, file, line, function);
2004 _fatal_insn ("Insn does not satisfy its constraints:",
2005 insn, file, line, function);
2008 /* Report a warning at line LINE of file FILE. */
2011 v_warning_with_file_and_line (file, line, msgid, ap)
2017 if (count_error (1))
2019 report_error_function (file);
2020 v_message_with_file_and_line (file, line, 1, msgid, ap);
2025 warning_with_file_and_line VPROTO((const char *file, int line,
2026 const char *msgid, ...))
2028 #ifndef ANSI_PROTOTYPES
2035 VA_START (ap, msgid);
2037 #ifndef ANSI_PROTOTYPES
2038 file = va_arg (ap, const char *);
2039 line = va_arg (ap, int);
2040 msgid = va_arg (ap, const char *);
2043 v_warning_with_file_and_line (file, line, msgid, ap);
2047 /* Report a warning at the declaration DECL.
2048 MSGID is a format string which uses %s to substitute the declaration
2049 name; subsequent substitutions are a la printf. */
2052 v_warning_with_decl (decl, msgid, ap)
2057 if (count_error (1))
2059 report_error_function (DECL_SOURCE_FILE (decl));
2060 v_message_with_decl (decl, 1, msgid, ap);
2065 warning_with_decl VPROTO((tree decl, const char *msgid, ...))
2067 #ifndef ANSI_PROTOTYPES
2073 VA_START (ap, msgid);
2075 #ifndef ANSI_PROTOTYPES
2076 decl = va_arg (ap, tree);
2077 msgid = va_arg (ap, const char *);
2080 v_warning_with_decl (decl, msgid, ap);
2084 /* Report a warning at the line number of the insn INSN.
2085 This is used only when INSN is an `asm' with operands,
2086 and each ASM_OPERANDS records its own source file and line. */
2089 v_warning_for_asm (insn, msgid, ap)
2094 if (count_error (1))
2099 file_and_line_for_asm (insn, &file, &line);
2100 report_error_function (file);
2101 v_message_with_file_and_line (file, line, 1, msgid, ap);
2106 warning_for_asm VPROTO((rtx insn, const char *msgid, ...))
2108 #ifndef ANSI_PROTOTYPES
2114 VA_START (ap, msgid);
2116 #ifndef ANSI_PROTOTYPES
2117 insn = va_arg (ap, rtx);
2118 msgid = va_arg (ap, const char *);
2121 v_warning_for_asm (insn, msgid, ap);
2125 /* Report a warning at the current line number. */
2128 vwarning (msgid, ap)
2132 v_warning_with_file_and_line (input_filename, lineno, msgid, ap);
2136 warning VPROTO((const char *msgid, ...))
2138 #ifndef ANSI_PROTOTYPES
2143 VA_START (ap, msgid);
2145 #ifndef ANSI_PROTOTYPES
2146 msgid = va_arg (ap, const char *);
2149 vwarning (msgid, ap);
2153 /* These functions issue either warnings or errors depending on
2154 -pedantic-errors. */
2157 vpedwarn (msgid, ap)
2161 if (flag_pedantic_errors)
2164 vwarning (msgid, ap);
2168 pedwarn VPROTO((const char *msgid, ...))
2170 #ifndef ANSI_PROTOTYPES
2175 VA_START (ap, msgid);
2177 #ifndef ANSI_PROTOTYPES
2178 msgid = va_arg (ap, const char *);
2181 vpedwarn (msgid, ap);
2186 v_pedwarn_with_decl (decl, msgid, ap)
2191 /* We don't want -pedantic-errors to cause the compilation to fail from
2192 "errors" in system header files. Sometimes fixincludes can't fix what's
2193 broken (eg: unsigned char bitfields - fixing it may change the alignment
2194 which will cause programs to mysteriously fail because the C library
2195 or kernel uses the original layout). There's no point in issuing a
2196 warning either, it's just unnecessary noise. */
2198 if (! DECL_IN_SYSTEM_HEADER (decl))
2200 if (flag_pedantic_errors)
2201 v_error_with_decl (decl, msgid, ap);
2203 v_warning_with_decl (decl, msgid, ap);
2208 pedwarn_with_decl VPROTO((tree decl, const char *msgid, ...))
2210 #ifndef ANSI_PROTOTYPES
2216 VA_START (ap, msgid);
2218 #ifndef ANSI_PROTOTYPES
2219 decl = va_arg (ap, tree);
2220 msgid = va_arg (ap, const char *);
2223 v_pedwarn_with_decl (decl, msgid, ap);
2228 v_pedwarn_with_file_and_line (file, line, msgid, ap)
2234 if (flag_pedantic_errors)
2235 v_error_with_file_and_line (file, line, msgid, ap);
2237 v_warning_with_file_and_line (file, line, msgid, ap);
2241 pedwarn_with_file_and_line VPROTO((const char *file, int line,
2242 const char *msgid, ...))
2244 #ifndef ANSI_PROTOTYPES
2251 VA_START (ap, msgid);
2253 #ifndef ANSI_PROTOTYPES
2254 file = va_arg (ap, const char *);
2255 line = va_arg (ap, int);
2256 msgid = va_arg (ap, const char *);
2259 v_pedwarn_with_file_and_line (file, line, msgid, ap);
2263 /* Apologize for not implementing some feature. */
2272 fprintf (stderr, "%s:%d: ", input_filename, lineno);
2274 fprintf (stderr, "%s: ", progname);
2275 notice ("sorry, not implemented: ");
2276 vnotice (stderr, msgid, ap);
2277 fputc ('\n', stderr);
2281 sorry VPROTO((const char *msgid, ...))
2283 #ifndef ANSI_PROTOTYPES
2288 VA_START (ap, msgid);
2290 #ifndef ANSI_PROTOTYPES
2291 msgid = va_arg (ap, const char *);
2299 /* This calls abort and is used to avoid problems when abort if a macro.
2300 It is used when we need to pass the address of abort. */
2308 /* When `malloc.c' is compiled with `rcheck' defined,
2309 it calls this function to report clobberage. */
2313 const char * s ATTRIBUTE_UNUSED;
2318 /* Return the logarithm of X, base 2, considering X unsigned,
2319 if X is a power of 2. Otherwise, returns -1.
2321 This should be used via the `exact_log2' macro. */
2325 register unsigned HOST_WIDE_INT x;
2327 register int log = 0;
2328 /* Test for 0 or a power of 2. */
2329 if (x == 0 || x != (x & -x))
2331 while ((x >>= 1) != 0)
2336 /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
2337 If X is 0, return -1.
2339 This should be used via the floor_log2 macro. */
2343 register unsigned HOST_WIDE_INT x;
2345 register int log = -1;
2352 static int float_handler_set;
2354 jmp_buf float_handler;
2356 /* Signals actually come here. */
2359 float_signal (signo)
2360 /* If this is missing, some compilers complain. */
2361 int signo ATTRIBUTE_UNUSED;
2363 if (float_handled == 0)
2365 #if defined (USG) || defined (hpux)
2366 signal (SIGFPE, float_signal); /* re-enable the signal catcher */
2369 signal (SIGFPE, float_signal);
2370 longjmp (float_handler, 1);
2373 /* Specify where to longjmp to when a floating arithmetic error happens.
2374 If HANDLER is 0, it means don't handle the errors any more. */
2377 set_float_handler (handler)
2380 float_handled = (handler != 0);
2382 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
2384 if (float_handled && ! float_handler_set)
2386 signal (SIGFPE, float_signal);
2387 float_handler_set = 1;
2391 /* This is a wrapper function for code which might elicit an
2392 arithmetic exception. That code should be passed in as a function
2393 pointer FN, and one argument DATA. DATA is usually a struct which
2394 contains the real input and output for function FN. This function
2395 returns 0 (failure) if longjmp was called (i.e. an exception
2396 occured.) It returns 1 (success) otherwise. */
2399 do_float_handler (fn, data)
2400 void (*fn) PROTO ((PTR));
2407 /* We got here via longjmp() caused by an exception in function fn() */
2408 set_float_handler (NULL);
2412 set_float_handler (buf);
2414 set_float_handler (NULL);
2418 /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
2419 error happens, pushing the previous specification into OLD_HANDLER.
2420 Return an indication of whether there was a previous handler in effect. */
2423 push_float_handler (handler, old_handler)
2424 jmp_buf handler, old_handler;
2426 int was_handled = float_handled;
2430 memcpy ((char *) old_handler, (char *) float_handler,
2431 sizeof (float_handler));
2433 memcpy ((char *) float_handler, (char *) handler, sizeof (float_handler));
2437 /* Restore the previous specification of whether and where to longjmp to
2438 when a floating arithmetic error happens. */
2441 pop_float_handler (handled, handler)
2445 float_handled = handled;
2447 bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
2450 /* Handler for SIGPIPE. */
2454 /* If this is missing, some compilers complain. */
2455 int signo ATTRIBUTE_UNUSED;
2457 fatal ("output pipe has been closed");
2460 /* Strip off a legitimate source ending from the input string NAME of
2461 length LEN. Rather than having to know the names used by all of
2462 our front ends, we strip off an ending of a period followed by
2463 up to five characters. (Java uses ".class".) */
2466 strip_off_ending (name, len)
2471 for (i = 2; i < 6 && len > i; i++)
2473 if (name[len - i] == '.')
2475 name[len - i] = '\0';
2481 /* Output a quoted string. */
2484 output_quoted_string (asm_file, string)
2488 #ifdef OUTPUT_QUOTED_STRING
2489 OUTPUT_QUOTED_STRING (asm_file, string);
2493 putc ('\"', asm_file);
2494 while ((c = *string++) != 0)
2496 if (c == '\"' || c == '\\')
2497 putc ('\\', asm_file);
2500 putc ('\"', asm_file);
2504 /* Output a file name in the form wanted by System V. */
2507 output_file_directive (asm_file, input_name)
2509 const char *input_name;
2511 int len = strlen (input_name);
2512 const char *na = input_name + len;
2514 /* NA gets INPUT_NAME sans directory names. */
2515 while (na > input_name)
2519 #ifdef DIR_SEPARATOR
2520 if (na[-1] == DIR_SEPARATOR)
2526 #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
2527 ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
2529 #ifdef ASM_OUTPUT_SOURCE_FILENAME
2530 ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
2532 fprintf (asm_file, "\t.file\t");
2533 output_quoted_string (asm_file, na);
2534 fputc ('\n', asm_file);
2539 #ifdef ASM_IDENTIFY_LANGUAGE
2540 /* Routine to build language identifier for object file. */
2542 output_lang_identify (asm_out_file)
2545 int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
2546 char *s = (char *) alloca (len);
2547 sprintf (s, "__gnu_compiled_%s", lang_identify ());
2548 ASM_OUTPUT_LABEL (asm_out_file, s);
2552 /* Routine to open a dump file. */
2554 open_dump_file (suffix, function_name)
2556 const char *function_name;
2563 dumpname = concat (dump_base_name, suffix, NULL);
2565 if (rtl_dump_file != NULL)
2566 fclose (rtl_dump_file);
2568 rtl_dump_file = fopen (dumpname, "a");
2570 if (rtl_dump_file == NULL)
2571 pfatal_with_name (dumpname);
2576 fprintf (rtl_dump_file, "\n;; Function %s\n\n", function_name);
2582 /* Routine to close a dump file. */
2584 close_dump_file (func, insns)
2585 void (*func) PROTO ((FILE *, rtx));
2592 func (rtl_dump_file, insns);
2594 fflush (rtl_dump_file);
2595 fclose (rtl_dump_file);
2597 rtl_dump_file = NULL;
2603 /* Routine to dump rtl into a file. */
2605 dump_rtl (suffix, decl, func, insns)
2608 void (*func) PROTO ((FILE *, rtx));
2611 open_dump_file (suffix, decl_printable_name (decl, 2));
2612 close_dump_file (func, insns);
2615 /* Routine to empty a dump file. */
2617 clean_dump_file (suffix)
2620 char * const dumpname = concat (dump_base_name, suffix, NULL);
2622 rtl_dump_file = fopen (dumpname, "w");
2624 if (rtl_dump_file == NULL)
2625 pfatal_with_name (dumpname);
2629 fclose (rtl_dump_file);
2630 rtl_dump_file = NULL;
2635 /* Do any final processing required for the declarations in VEC, of
2636 which there are LEN. We write out inline functions and variables
2637 that have been deferred until this point, but which are required.
2638 Returns non-zero if anything was put out. */
2640 wrapup_global_declarations (vec, len)
2647 int output_something = 0;
2649 for (i = 0; i < len; i++)
2653 /* We're not deferring this any longer. */
2654 DECL_DEFER_OUTPUT (decl) = 0;
2656 if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
2657 && incomplete_decl_finalize_hook != 0)
2658 (*incomplete_decl_finalize_hook) (decl);
2661 /* Now emit any global variables or functions that we have been
2662 putting off. We need to loop in case one of the things emitted
2663 here references another one which comes earlier in the list. */
2667 for (i = 0; i < len; i++)
2671 if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
2674 /* Don't write out static consts, unless we still need them.
2676 We also keep static consts if not optimizing (for debugging),
2677 unless the user specified -fno-keep-static-consts.
2678 ??? They might be better written into the debug information.
2679 This is possible when using DWARF.
2681 A language processor that wants static constants to be always
2682 written out (even if it is not used) is responsible for
2683 calling rest_of_decl_compilation itself. E.g. the C front-end
2684 calls rest_of_decl_compilation from finish_decl.
2685 One motivation for this is that is conventional in some
2686 environments to write things like:
2687 static const char rcsid[] = "... version string ...";
2688 intending to force the string to be in the executable.
2690 A language processor that would prefer to have unneeded
2691 static constants "optimized away" would just defer writing
2692 them out until here. E.g. C++ does this, because static
2693 constants are often defined in header files.
2695 ??? A tempting alternative (for both C and C++) would be
2696 to force a constant to be written if and only if it is
2697 defined in a main file, as opposed to an include file. */
2699 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2700 && (! TREE_READONLY (decl)
2701 || TREE_PUBLIC (decl)
2702 || (!optimize && flag_keep_static_consts)
2703 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2706 rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
2709 if (TREE_CODE (decl) == FUNCTION_DECL
2710 && DECL_INITIAL (decl) != 0
2711 && DECL_SAVED_INSNS (decl) != 0
2712 && (flag_keep_inline_functions
2713 || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl))
2714 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
2717 temporary_allocation ();
2718 output_inline_function (decl);
2719 permanent_allocation (1);
2724 output_something = 1;
2728 return output_something;
2731 /* Issue appropriate warnings for the global declarations in VEC (of
2732 which there are LEN). Output debugging information for them. */
2734 check_global_declarations (vec, len)
2741 for (i = 0; i < len; i++)
2745 if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
2746 && ! TREE_ASM_WRITTEN (decl))
2747 /* Cancel the RTL for this decl so that, if debugging info
2748 output for global variables is still to come,
2749 this one will be omitted. */
2750 DECL_RTL (decl) = NULL;
2752 /* Warn about any function
2753 declared static but not defined.
2754 We don't warn about variables,
2755 because many programs have static variables
2756 that exist only to get some text into the object file. */
2757 if (TREE_CODE (decl) == FUNCTION_DECL
2759 || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
2760 && DECL_INITIAL (decl) == 0
2761 && DECL_EXTERNAL (decl)
2762 && ! DECL_ARTIFICIAL (decl)
2763 && ! TREE_PUBLIC (decl))
2765 if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
2766 pedwarn_with_decl (decl,
2767 "`%s' used but never defined");
2769 warning_with_decl (decl,
2770 "`%s' declared `static' but never defined");
2771 /* This symbol is effectively an "extern" declaration now. */
2772 TREE_PUBLIC (decl) = 1;
2773 assemble_external (decl);
2776 /* Warn about static fns or vars defined but not used,
2777 but not about inline functions or static consts
2778 since defining those in header files is normal practice. */
2780 && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
2781 || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
2782 && ! DECL_IN_SYSTEM_HEADER (decl)
2783 && ! DECL_EXTERNAL (decl)
2784 && ! TREE_PUBLIC (decl)
2785 && ! TREE_USED (decl)
2786 && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
2787 /* The TREE_USED bit for file-scope decls
2788 is kept in the identifier, to handle multiple
2789 external decls in different scopes. */
2790 && ! TREE_USED (DECL_NAME (decl)))
2791 warning_with_decl (decl, "`%s' defined but not used");
2793 #ifdef SDB_DEBUGGING_INFO
2794 /* The COFF linker can move initialized global vars to the end.
2795 And that can screw up the symbol ordering.
2796 By putting the symbols in that order to begin with,
2797 we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
2798 if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
2799 && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
2800 && ! DECL_EXTERNAL (decl)
2801 && DECL_RTL (decl) != 0)
2802 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
2804 /* Output COFF information for non-global
2805 file-scope initialized variables. */
2806 if (write_symbols == SDB_DEBUG
2807 && TREE_CODE (decl) == VAR_DECL
2808 && DECL_INITIAL (decl)
2809 && ! DECL_EXTERNAL (decl)
2810 && DECL_RTL (decl) != 0
2811 && GET_CODE (DECL_RTL (decl)) == MEM)
2812 TIMEVAR (symout_time, sdbout_toplevel_data (decl));
2813 #endif /* SDB_DEBUGGING_INFO */
2814 #ifdef DWARF_DEBUGGING_INFO
2815 /* Output DWARF information for file-scope tentative data object
2816 declarations, file-scope (extern) function declarations (which
2817 had no corresponding body) and file-scope tagged type declarations
2818 and definitions which have not yet been forced out. */
2820 if (write_symbols == DWARF_DEBUG
2821 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
2822 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
2824 #ifdef DWARF2_DEBUGGING_INFO
2825 /* Output DWARF2 information for file-scope tentative data object
2826 declarations, file-scope (extern) function declarations (which
2827 had no corresponding body) and file-scope tagged type declarations
2828 and definitions which have not yet been forced out. */
2830 if (write_symbols == DWARF2_DEBUG
2831 && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
2832 TIMEVAR (symout_time, dwarf2out_decl (decl));
2837 /* Compile an entire file of output from cpp, named NAME.
2838 Write a file of assembly output and various debugging dumps. */
2847 int name_specified = name != 0;
2849 if (dump_base_name == 0)
2850 dump_base_name = name ? name : "gccdump";
2854 integration_time = 0;
2860 branch_prob_time = 0;
2865 local_alloc_time = 0;
2866 global_alloc_time = 0;
2872 shorten_branch_time = 0;
2878 /* Initialize data in various passes. */
2882 name = init_parse (name);
2883 init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
2884 || debug_info_level == DINFO_LEVEL_VERBOSE
2885 || flag_test_coverage
2886 || warn_notreached);
2888 init_decl_processing ();
2894 init_function_once ();
2895 init_stor_layout_once ();
2896 init_varasm_once ();
2898 /* The following initialization functions need to generate rtl, so
2899 provide a dummy function context for them. */
2900 init_dummy_function_start ();
2903 if (flag_caller_saves)
2904 init_caller_save ();
2905 expand_dummy_function_end ();
2907 /* If auxiliary info generation is desired, open the output file.
2908 This goes in the same directory as the source file--unlike
2909 all the other output files. */
2910 if (flag_gen_aux_info)
2912 aux_info_file = fopen (aux_info_file_name, "w");
2913 if (aux_info_file == 0)
2914 pfatal_with_name (aux_info_file_name);
2917 /* Clear the dump files. */
2919 clean_dump_file (".rtl");
2922 clean_dump_file (".jump");
2923 if (graph_dump_format != no_graph)
2924 clean_graph_dump_file (dump_base_name, ".jump");
2928 clean_dump_file (".addressof");
2929 if (graph_dump_format != no_graph)
2930 clean_graph_dump_file (dump_base_name, ".addressof");
2934 clean_dump_file (".cse");
2935 if (graph_dump_format != no_graph)
2936 clean_graph_dump_file (dump_base_name, ".cse");
2940 clean_dump_file (".loop");
2941 if (graph_dump_format != no_graph)
2942 clean_graph_dump_file (dump_base_name, ".loop");
2946 clean_dump_file (".cse2");
2947 if (graph_dump_format != no_graph)
2948 clean_graph_dump_file (dump_base_name, ".cse2");
2950 if (branch_prob_dump)
2952 clean_dump_file (".bp");
2953 if (graph_dump_format != no_graph)
2954 clean_graph_dump_file (dump_base_name, ".bp");
2958 clean_dump_file (".flow");
2959 if (graph_dump_format != no_graph)
2960 clean_graph_dump_file (dump_base_name, ".flow");
2964 clean_dump_file (".combine");
2965 if (graph_dump_format != no_graph)
2966 clean_graph_dump_file (dump_base_name, ".combine");
2970 clean_dump_file (".regmove");
2971 if (graph_dump_format != no_graph)
2972 clean_graph_dump_file (dump_base_name, ".regmove");
2976 clean_dump_file (".sched");
2977 if (graph_dump_format != no_graph)
2978 clean_graph_dump_file (dump_base_name, ".sched");
2982 clean_dump_file (".lreg");
2983 if (graph_dump_format != no_graph)
2984 clean_graph_dump_file (dump_base_name, ".lreg");
2986 if (global_reg_dump)
2988 clean_dump_file (".greg");
2989 if (graph_dump_format != no_graph)
2990 clean_graph_dump_file (dump_base_name, ".greg");
2994 clean_dump_file (".flow2");
2995 if (graph_dump_format != no_graph)
2996 clean_graph_dump_file (dump_base_name, ".flow2");
3000 clean_dump_file (".peephole2");
3001 if (graph_dump_format != no_graph)
3002 clean_graph_dump_file (dump_base_name, ".peephole2");
3006 clean_dump_file (".sched2");
3007 if (graph_dump_format != no_graph)
3008 clean_graph_dump_file (dump_base_name, ".sched2");
3012 clean_dump_file (".jump2");
3013 if (graph_dump_format != no_graph)
3014 clean_graph_dump_file (dump_base_name, ".jump2");
3019 clean_dump_file (".dbr");
3020 if (graph_dump_format != no_graph)
3021 clean_graph_dump_file (dump_base_name, ".dbr");
3026 clean_dump_file (".gcse");
3027 if (graph_dump_format != no_graph)
3028 clean_graph_dump_file (dump_base_name, ".gcse");
3033 clean_dump_file (".stack");
3034 if (graph_dump_format != no_graph)
3035 clean_graph_dump_file (dump_base_name, ".stack");
3038 #ifdef MACHINE_DEPENDENT_REORG
3039 if (mach_dep_reorg_dump)
3041 clean_dump_file (".mach");
3042 if (graph_dump_format != no_graph)
3043 clean_graph_dump_file (dump_base_name, ".mach");
3047 /* Open assembler code output file. */
3049 if (flag_syntax_only)
3050 asm_out_file = NULL;
3053 if (! name_specified && asm_file_name == 0)
3054 asm_out_file = stdout;
3057 int len = strlen (dump_base_name);
3058 register char *dumpname = (char *) xmalloc (len + 6);
3059 strcpy (dumpname, dump_base_name);
3060 strip_off_ending (dumpname, len);
3061 strcat (dumpname, ".s");
3062 if (asm_file_name == 0)
3063 asm_file_name = xstrdup (dumpname);
3064 if (!strcmp (asm_file_name, "-"))
3065 asm_out_file = stdout;
3067 asm_out_file = fopen (asm_file_name, "w");
3068 if (asm_out_file == 0)
3069 pfatal_with_name (asm_file_name);
3072 #ifdef IO_BUFFER_SIZE
3073 setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
3074 _IOFBF, IO_BUFFER_SIZE);
3079 name = ggc_alloc_string (name, strlen (name));
3080 input_filename = name;
3082 /* Put an entry on the input file stack for the main input file. */
3084 = (struct file_stack *) xmalloc (sizeof (struct file_stack));
3085 input_file_stack->next = 0;
3086 input_file_stack->name = input_filename;
3088 /* Perform language-specific initialization.
3089 This may set main_input_filename. */
3092 /* If the input doesn't start with a #line, use the input name
3093 as the official input file name. */
3094 if (main_input_filename == 0)
3095 main_input_filename = name;
3097 if (flag_syntax_only)
3099 write_symbols = NO_DEBUG;
3101 profile_block_flag = 0;
3105 ASM_FILE_START (asm_out_file);
3107 #ifdef ASM_COMMENT_START
3108 if (flag_verbose_asm)
3110 /* Print the list of options in effect. */
3111 print_version (asm_out_file, ASM_COMMENT_START);
3112 print_switch_values (asm_out_file, 0, MAX_LINE,
3113 ASM_COMMENT_START, " ", "\n");
3114 /* Add a blank line here so it appears in assembler output but not
3116 fprintf (asm_out_file, "\n");
3120 /* Output something to inform GDB that this compilation was by GCC. */
3121 #ifndef ASM_IDENTIFY_GCC
3122 fprintf (asm_out_file, "gcc2_compiled.:\n");
3124 ASM_IDENTIFY_GCC (asm_out_file);
3127 /* Output something to identify which front-end produced this file. */
3128 #ifdef ASM_IDENTIFY_LANGUAGE
3129 ASM_IDENTIFY_LANGUAGE (asm_out_file);
3131 } /* ! flag_syntax_only */
3133 #ifndef ASM_OUTPUT_SECTION_NAME
3134 if (flag_function_sections)
3136 warning ("-ffunction-sections not supported for this target.");
3137 flag_function_sections = 0;
3139 if (flag_data_sections)
3141 warning ("-fdata-sections not supported for this target.");
3142 flag_data_sections = 0;
3146 if (flag_function_sections
3147 && (profile_flag || profile_block_flag))
3149 warning ("-ffunction-sections disabled; it makes profiling impossible.");
3150 flag_function_sections = 0;
3153 #ifndef OBJECT_FORMAT_ELF
3154 if (flag_function_sections && write_symbols != NO_DEBUG)
3155 warning ("-ffunction-sections may affect debugging on some targets.");
3158 /* ??? Note: There used to be a conditional here
3159 to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
3160 This was to guarantee separation between gcc_compiled. and
3161 the first function, for the sake of dbx on Suns.
3162 However, having the extra zero here confused the Emacs
3163 code for unexec, and might confuse other programs too.
3164 Therefore, I took out that change.
3165 In future versions we should find another way to solve
3166 that dbx problem. -- rms, 23 May 93. */
3168 /* Don't let the first function fall at the same address
3169 as gcc_compiled., if profiling. */
3170 if (profile_flag || profile_block_flag)
3172 /* It's best if we can write a nop here since some
3173 assemblers don't tolerate zeros in the text section. */
3174 if (insn_template[CODE_FOR_nop] != 0)
3175 output_asm_insn (insn_template[CODE_FOR_nop], NULL_PTR);
3177 assemble_zeros (UNITS_PER_WORD);
3180 /* If dbx symbol table desired, initialize writing it
3181 and output the predefined types. */
3182 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3183 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3184 TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
3187 #ifdef SDB_DEBUGGING_INFO
3188 if (write_symbols == SDB_DEBUG)
3189 TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
3192 #ifdef DWARF_DEBUGGING_INFO
3193 if (write_symbols == DWARF_DEBUG)
3194 TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
3196 #ifdef DWARF2_UNWIND_INFO
3197 if (dwarf2out_do_frame ())
3198 dwarf2out_frame_init ();
3200 #ifdef DWARF2_DEBUGGING_INFO
3201 if (write_symbols == DWARF2_DEBUG)
3202 TIMEVAR (symout_time, dwarf2out_init (asm_out_file, main_input_filename));
3205 /* Initialize yet another pass. */
3207 init_final (main_input_filename);
3208 init_branch_prob (dump_base_name);
3210 start_time = get_run_time ();
3212 /* Call the parser, which parses the entire file
3213 (calling rest_of_compilation for each function). */
3215 if (yyparse () != 0)
3217 if (errorcount == 0)
3218 notice ("Errors detected in input file (your bison.simple is out of date)\n");
3220 /* In case there were missing closebraces,
3221 get us back to the global binding level. */
3222 while (! global_bindings_p ())
3226 /* Compilation is now finished except for writing
3227 what's left of the symbol table output. */
3229 parse_time += get_run_time () - start_time;
3231 parse_time -= integration_time;
3232 parse_time -= varconst_time;
3234 if (flag_syntax_only)
3237 globals = getdecls ();
3239 /* Really define vars that have had only a tentative definition.
3240 Really output inline functions that must actually be callable
3241 and have not been output so far. */
3244 int len = list_length (globals);
3245 tree *vec = (tree *) alloca (sizeof (tree) * len);
3249 /* Process the decls in reverse order--earliest first.
3250 Put them into VEC from back to front, then take out from front. */
3252 for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
3253 vec[len - i - 1] = decl;
3255 wrapup_global_declarations (vec, len);
3257 /* This must occur after the loop to output deferred functions. Else
3258 the profiler initializer would not be emitted if all the functions
3259 in this compilation unit were deferred.
3261 output_func_start_profiler can not cause any additional functions or
3262 data to need to be output, so it need not be in the deferred function
3264 output_func_start_profiler ();
3266 /* Now that all possible functions have been output, we can dump
3267 the exception table. */
3269 output_exception_table ();
3271 check_global_declarations (vec, len);
3274 /* Write out any pending weak symbol declarations. */
3278 /* Do dbx symbols */
3279 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3280 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3281 TIMEVAR (symout_time,
3283 dbxout_finish (asm_out_file, main_input_filename);
3287 #ifdef DWARF_DEBUGGING_INFO
3288 if (write_symbols == DWARF_DEBUG)
3289 TIMEVAR (symout_time,
3295 #ifdef DWARF2_UNWIND_INFO
3296 if (dwarf2out_do_frame ())
3297 dwarf2out_frame_finish ();
3300 #ifdef DWARF2_DEBUGGING_INFO
3301 if (write_symbols == DWARF2_DEBUG)
3302 TIMEVAR (symout_time,
3304 dwarf2out_finish ();
3308 /* Output some stuff at end of file if nec. */
3310 end_final (dump_base_name);
3312 if (branch_prob_dump)
3313 open_dump_file (".bp", NULL);
3315 TIMEVAR (dump_time, end_branch_prob (rtl_dump_file));
3317 if (branch_prob_dump)
3318 close_dump_file (NULL, NULL_RTX);
3321 ASM_FILE_END (asm_out_file);
3325 /* Language-specific end of compilation actions. */
3329 /* Close the dump files. */
3331 if (flag_gen_aux_info)
3333 fclose (aux_info_file);
3335 unlink (aux_info_file_name);
3340 open_dump_file (".combine", NULL);
3341 TIMEVAR (dump_time, dump_combine_total_stats (rtl_dump_file));
3342 close_dump_file (NULL, NULL_RTX);
3345 /* Close non-debugging input and output files. Take special care to note
3346 whether fclose returns an error, since the pages might still be on the
3347 buffer chain while the file is open. */
3351 if (! flag_syntax_only
3352 && (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0))
3353 fatal_io_error (asm_file_name);
3355 /* Do whatever is necessary to finish printing the graphs. */
3356 if (graph_dump_format != no_graph)
3359 finish_graph_dump_file (dump_base_name, ".jump");
3361 finish_graph_dump_file (dump_base_name, ".addressof");
3363 finish_graph_dump_file (dump_base_name, ".cse");
3365 finish_graph_dump_file (dump_base_name, ".loop");
3367 finish_graph_dump_file (dump_base_name, ".cse2");
3368 if (branch_prob_dump)
3369 finish_graph_dump_file (dump_base_name, ".bp");
3371 finish_graph_dump_file (dump_base_name, ".flow");
3373 finish_graph_dump_file (dump_base_name, ".combine");
3375 finish_graph_dump_file (dump_base_name, ".regmove");
3377 finish_graph_dump_file (dump_base_name, ".sched");
3379 finish_graph_dump_file (dump_base_name, ".lreg");
3380 if (global_reg_dump)
3381 finish_graph_dump_file (dump_base_name, ".greg");
3383 finish_graph_dump_file (dump_base_name, ".flow2");
3385 finish_graph_dump_file (dump_base_name, ".sched2");
3387 finish_graph_dump_file (dump_base_name, ".jump2");
3390 finish_graph_dump_file (dump_base_name, ".dbr");
3393 finish_graph_dump_file (dump_base_name, ".gcse");
3396 finish_graph_dump_file (dump_base_name, ".stack");
3398 #ifdef MACHINE_DEPENDENT_REORG
3399 if (mach_dep_reorg_dump)
3400 finish_graph_dump_file (dump_base_name, ".mach");
3404 /* Free up memory for the benefit of leak detectors. */
3407 /* Print the times. */
3411 all_time = get_run_time ();
3413 fprintf (stderr,"\n");
3415 print_time ("parse", parse_time);
3416 print_time ("integration", integration_time);
3417 print_time ("jump", jump_time);
3418 print_time ("cse", cse_time);
3419 print_time ("gcse", gcse_time);
3420 print_time ("loop", loop_time);
3421 print_time ("cse2", cse2_time);
3422 print_time ("branch-prob", branch_prob_time);
3423 print_time ("flow", flow_time);
3424 print_time ("combine", combine_time);
3425 print_time ("regmove", regmove_time);
3426 print_time ("sched", sched_time);
3427 print_time ("local-alloc", local_alloc_time);
3428 print_time ("global-alloc", global_alloc_time);
3429 print_time ("flow2", flow2_time);
3430 print_time ("sched2", sched2_time);
3432 print_time ("dbranch", dbr_sched_time);
3434 print_time ("shorten-branch", shorten_branch_time);
3435 print_time ("stack-reg", stack_reg_time);
3436 print_time ("final", final_time);
3437 print_time ("varconst", varconst_time);
3438 print_time ("symout", symout_time);
3439 print_time ("dump", dump_time);
3440 print_time ("gc", gc_time);
3444 /* This is called from various places for FUNCTION_DECL, VAR_DECL,
3445 and TYPE_DECL nodes.
3447 This does nothing for local (non-static) variables.
3448 Otherwise, it sets up the RTL and outputs any assembler code
3449 (label definition, storage allocation and initialization).
3451 DECL is the declaration. If ASMSPEC is nonzero, it specifies
3452 the assembler symbol name to be used. TOP_LEVEL is nonzero
3453 if this declaration is not within a function. */
3456 rest_of_decl_compilation (decl, asmspec, top_level, at_end)
3458 const char *asmspec;
3462 /* Declarations of variables, and of functions defined elsewhere. */
3464 /* The most obvious approach, to put an #ifndef around where
3465 this macro is used, doesn't work since it's inside a macro call. */
3466 #ifndef ASM_FINISH_DECLARE_OBJECT
3467 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
3470 /* Forward declarations for nested functions are not "external",
3471 but we need to treat them as if they were. */
3472 if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
3473 || TREE_CODE (decl) == FUNCTION_DECL)
3474 TIMEVAR (varconst_time,
3476 make_decl_rtl (decl, asmspec, top_level);
3477 /* Initialized extern variable exists to be replaced
3478 with its value, or represents something that will be
3479 output in another file. */
3480 if (! (TREE_CODE (decl) == VAR_DECL
3481 && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
3482 && DECL_INITIAL (decl) != 0
3483 && DECL_INITIAL (decl) != error_mark_node))
3484 /* Don't output anything
3485 when a tentative file-scope definition is seen.
3486 But at end of compilation, do output code for them. */
3487 if (! (! at_end && top_level
3488 && (DECL_INITIAL (decl) == 0
3489 || DECL_INITIAL (decl) == error_mark_node)))
3490 assemble_variable (decl, top_level, at_end, 0);
3491 if (decl == last_assemble_variable_decl)
3493 ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
3497 else if (DECL_REGISTER (decl) && asmspec != 0)
3499 if (decode_reg_name (asmspec) >= 0)
3501 DECL_RTL (decl) = 0;
3502 make_decl_rtl (decl, asmspec, top_level);
3505 error ("invalid register name `%s' for register variable", asmspec);
3507 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3508 else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3509 && TREE_CODE (decl) == TYPE_DECL)
3510 TIMEVAR (symout_time, dbxout_symbol (decl, 0));
3512 #ifdef SDB_DEBUGGING_INFO
3513 else if (write_symbols == SDB_DEBUG && top_level
3514 && TREE_CODE (decl) == TYPE_DECL)
3515 TIMEVAR (symout_time, sdbout_symbol (decl, 0));
3519 /* Called after finishing a record, union or enumeral type. */
3522 rest_of_type_compilation (type, toplev)
3523 #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO)
3527 tree type ATTRIBUTE_UNUSED;
3528 int toplev ATTRIBUTE_UNUSED;
3531 #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
3532 if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
3533 TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
3535 #ifdef SDB_DEBUGGING_INFO
3536 if (write_symbols == SDB_DEBUG)
3537 TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
3541 /* This is called from finish_function (within yyparse)
3542 after each top-level definition is parsed.
3543 It is supposed to compile that function or variable
3544 and output the assembler code for it.
3545 After we return, the tree storage is freed. */
3548 rest_of_compilation (decl)
3552 int start_time = get_run_time ();
3554 /* Nonzero if we have saved the original DECL_INITIAL of the function,
3555 to be restored after we finish compiling the function
3556 (for use when compiling inline calls to this function). */
3557 tree saved_block_tree = 0;
3558 /* Likewise, for DECL_ARGUMENTS. */
3559 tree saved_arguments = 0;
3561 int rebuild_label_notes_after_reload;
3563 /* If we are reconsidering an inline function
3564 at the end of compilation, skip the stuff for making it inline. */
3566 if (DECL_SAVED_INSNS (decl) == 0)
3571 /* If requested, consider whether to make this function inline. */
3572 if (DECL_INLINE (decl) || flag_inline_functions)
3573 TIMEVAR (integration_time,
3575 lose = function_cannot_inline_p (decl);
3576 if (lose || ! optimize)
3578 if (warn_inline && DECL_INLINE (decl))
3579 warning_with_decl (decl, lose);
3580 DECL_ABSTRACT_ORIGIN (decl) = 0;
3581 /* Don't really compile an extern inline function.
3582 If we can't make it inline, pretend
3583 it was only declared. */
3584 if (DECL_EXTERNAL (decl))
3586 DECL_INITIAL (decl) = 0;
3587 goto exit_rest_of_compilation;
3591 /* ??? Note that this has the effect of making it look
3592 like "inline" was specified for a function if we choose
3593 to inline it. This isn't quite right, but it's
3594 probably not worth the trouble to fix. */
3595 inlinable = DECL_INLINE (decl) = 1;
3598 insns = get_insns ();
3600 /* Dump the rtl code if we are dumping rtl. */
3604 open_dump_file (".rtl", decl_printable_name (decl, 2));
3606 if (DECL_SAVED_INSNS (decl))
3607 fprintf (rtl_dump_file, ";; (integrable)\n\n");
3609 close_dump_file (print_rtl, insns);
3612 /* If function is inline, and we don't yet know whether to
3613 compile it by itself, defer decision till end of compilation.
3614 finish_compilation will call rest_of_compilation again
3615 for those functions that need to be output. Also defer those
3616 functions that we are supposed to defer. */
3619 DECL_DEFER_OUTPUT (decl) = 1;
3621 if (DECL_DEFER_OUTPUT (decl)
3622 || (DECL_INLINE (decl)
3623 && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
3624 && ! flag_keep_inline_functions)
3625 || DECL_EXTERNAL (decl))))
3627 DECL_DEFER_OUTPUT (decl) = 1;
3629 /* If -Wreturn-type, we have to do a bit of compilation.
3630 However, if we just fall through we will call
3631 save_for_inline_copying() which results in excessive
3632 memory use. Instead, we just want to call
3633 jump_optimize() to figure out whether or not we can fall
3634 off the end of the function; we do the minimum amount of
3635 work necessary to make that safe. And, we set optimize
3636 to zero to keep jump_optimize from working too hard. */
3637 if (warn_return_type)
3639 int saved_optimize = optimize;
3641 find_exception_handler_labels ();
3642 jump_optimize (get_insns(), !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
3643 !JUMP_AFTER_REGSCAN);
3644 optimize = saved_optimize;
3647 #ifdef DWARF_DEBUGGING_INFO
3648 /* Generate the DWARF info for the "abstract" instance
3649 of a function which we may later generate inlined and/or
3650 out-of-line instances of. */
3651 if (write_symbols == DWARF_DEBUG)
3653 set_decl_abstract_flags (decl, 1);
3654 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
3655 set_decl_abstract_flags (decl, 0);
3658 #ifdef DWARF2_DEBUGGING_INFO
3659 /* Generate the DWARF2 info for the "abstract" instance
3660 of a function which we may later generate inlined and/or
3661 out-of-line instances of. */
3662 if (write_symbols == DWARF2_DEBUG)
3664 set_decl_abstract_flags (decl, 1);
3665 TIMEVAR (symout_time, dwarf2out_decl (decl));
3666 set_decl_abstract_flags (decl, 0);
3669 TIMEVAR (integration_time, save_for_inline_nocopy (decl));
3670 DECL_SAVED_INSNS (decl)->inlinable = inlinable;
3671 goto exit_rest_of_compilation;
3674 /* If specified extern inline but we aren't inlining it, we are
3675 done. This goes for anything that gets here with DECL_EXTERNAL
3676 set, not just things with DECL_INLINE. */
3677 if (DECL_EXTERNAL (decl))
3678 goto exit_rest_of_compilation;
3681 /* Initialize some variables used by the optimizers. */
3682 init_function_for_compilation ();
3684 if (! DECL_DEFER_OUTPUT (decl))
3685 TREE_ASM_WRITTEN (decl) = 1;
3687 /* Now that integrate will no longer see our rtl, we need not distinguish
3688 between the return value of this function and the return value of called
3690 rtx_equal_function_value_matters = 0;
3692 /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
3693 if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
3695 goto exit_rest_of_compilation;
3698 /* Emit code to get eh context, if needed. */
3702 /* If we are doing position-independent code generation, now
3703 is the time to output special prologues and epilogues.
3704 We do not want to do this earlier, because it just clutters
3705 up inline functions with meaningless insns. */
3710 /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
3711 Note that that may have been done above, in save_for_inline_copying.
3712 The call to resume_temporary_allocation near the end of this function
3713 goes back to the usual state of affairs. This must be done after
3714 we've built up any unwinders for exception handling, and done
3715 the FINALIZE_PIC work, if necessary. */
3717 rtl_in_current_obstack ();
3719 insns = get_insns ();
3721 /* Copy any shared structure that should not be shared. */
3723 unshare_all_rtl (insns);
3725 init_EXPR_INSN_LIST_cache ();
3727 #ifdef SETJMP_VIA_SAVE_AREA
3728 /* This must be performed before virutal register instantiation. */
3729 if (current_function_calls_alloca)
3730 optimize_save_area_alloca (insns);
3733 /* Instantiate all virtual registers. */
3735 instantiate_virtual_regs (current_function_decl, get_insns ());
3737 /* See if we have allocated stack slots that are not directly addressable.
3738 If so, scan all the insns and create explicit address computation
3739 for all references to such slots. */
3740 /* fixup_stack_slots (); */
3742 /* Find all the EH handlers. */
3743 find_exception_handler_labels ();
3745 /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
3746 are initialized and to compute whether control can drop off the end
3748 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3749 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
3750 JUMP_AFTER_REGSCAN));
3752 /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
3753 if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
3754 goto exit_rest_of_compilation;
3756 /* Dump rtl code after jump, if we are doing that. */
3758 dump_rtl (".jump", decl, print_rtl, insns);
3763 /* Perform common subexpression elimination.
3764 Nonzero value from `cse_main' means that jumps were simplified
3765 and some code may now be unreachable, so do
3766 jump optimization again. */
3771 open_dump_file (".cse", decl_printable_name (decl, 2));
3773 TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
3775 if (flag_thread_jumps)
3776 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
3778 TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
3780 TIMEVAR (cse_time, delete_trivially_dead_insns (insns, max_reg_num ()));
3782 /* If we are not running the second CSE pass, then we are no longer
3783 expecting CSE to be run. */
3784 cse_not_expected = !flag_rerun_cse_after_loop;
3786 if (tem || optimize > 1)
3787 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3789 !JUMP_AFTER_REGSCAN));
3791 /* Dump rtl code after cse, if we are doing that. */
3795 close_dump_file (print_rtl, insns);
3796 if (graph_dump_format != no_graph)
3797 print_rtl_graph_with_bb (dump_base_name, ".cse", insns);
3801 purge_addressof (insns);
3802 reg_scan (insns, max_reg_num (), 1);
3806 dump_rtl (".addressof", decl, print_rtl, insns);
3807 if (graph_dump_format != no_graph)
3808 print_rtl_graph_with_bb (dump_base_name, ".addressof", insns);
3814 /* Perform global cse. */
3816 if (optimize > 0 && flag_gcse)
3819 open_dump_file (".gcse", decl_printable_name (decl, 2));
3821 TIMEVAR (gcse_time, tem = gcse_main (insns, rtl_dump_file));
3823 /* If gcse altered any jumps, rerun jump optimizations to clean
3827 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3829 !JUMP_AFTER_REGSCAN));
3834 close_dump_file (print_rtl, insns);
3835 if (graph_dump_format != no_graph)
3836 print_rtl_graph_with_bb (dump_base_name, ".gcse", insns);
3842 /* Move constant computations out of loops. */
3847 open_dump_file (".loop", decl_printable_name (decl, 2));
3852 if (flag_rerun_loop_opt)
3854 /* We only want to perform unrolling once. */
3856 loop_optimize (insns, rtl_dump_file, 0, 0);
3859 /* The first call to loop_optimize makes some instructions
3860 trivially dead. We delete those instructions now in the
3861 hope that doing so will make the heuristics in loop work
3862 better and possibly speed up compilation. */
3863 delete_trivially_dead_insns (insns, max_reg_num ());
3865 /* The regscan pass is currently necessary as the alias
3866 analysis code depends on this information. */
3867 reg_scan (insns, max_reg_num (), 1);
3869 loop_optimize (insns, rtl_dump_file, flag_unroll_loops, 1);
3872 /* Dump rtl code after loop opt, if we are doing that. */
3876 close_dump_file (print_rtl, insns);
3877 if (graph_dump_format != no_graph)
3878 print_rtl_graph_with_bb (dump_base_name, ".loop", insns);
3888 open_dump_file (".cse2", decl_printable_name (decl, 2));
3890 if (flag_rerun_cse_after_loop)
3892 /* Running another jump optimization pass before the second
3893 cse pass sometimes simplifies the RTL enough to allow
3894 the second CSE pass to do a better job. Jump_optimize can change
3895 max_reg_num so we must rerun reg_scan afterwards.
3896 ??? Rework to not call reg_scan so often. */
3897 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3898 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3900 JUMP_AFTER_REGSCAN));
3902 TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
3903 TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
3906 TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP,
3908 !JUMP_AFTER_REGSCAN));
3911 if (flag_thread_jumps)
3913 /* This pass of jump threading straightens out code
3914 that was kinked by loop optimization. */
3915 TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
3916 TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
3919 /* Dump rtl code after cse, if we are doing that. */
3923 close_dump_file (print_rtl, insns);
3924 if (graph_dump_format != no_graph)
3925 print_rtl_graph_with_bb (dump_base_name, ".cse2", insns);
3932 if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
3934 if (branch_prob_dump)
3935 open_dump_file (".bp", decl_printable_name (decl, 2));
3940 branch_prob (insns, rtl_dump_file);
3943 if (branch_prob_dump)
3945 close_dump_file (print_rtl, insns);
3946 if (graph_dump_format != no_graph)
3947 print_rtl_graph_with_bb (dump_base_name, ".bp", insns);
3954 /* We are no longer anticipating cse in this function, at least. */
3956 cse_not_expected = 1;
3958 /* Now we choose between stupid (pcc-like) register allocation
3959 (if we got the -noreg switch and not -opt)
3960 and smart register allocation. */
3962 if (optimize > 0) /* Stupid allocation probably won't work */
3963 obey_regdecls = 0; /* if optimizations being done. */
3967 /* Print function header into flow dump now
3968 because doing the flow analysis makes some of the dump. */
3971 open_dump_file (".flow", decl_printable_name (decl, 2));
3977 regclass (insns, max_reg_num ());
3978 stupid_life_analysis (insns, max_reg_num (),
3984 /* Do control and data flow analysis,
3985 and write some of the results to dump file. */
3990 find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1);
3991 life_analysis (insns, max_reg_num (), rtl_dump_file, 1);
3994 if (warn_uninitialized)
3996 uninitialized_vars_warning (DECL_INITIAL (decl));
3997 setjmp_args_warning ();
4001 /* Dump rtl after flow analysis. */
4005 close_dump_file (print_rtl_with_bb, insns);
4006 if (graph_dump_format != no_graph)
4007 print_rtl_graph_with_bb (dump_base_name, ".flow", insns);
4013 /* The first life analysis pass has finished. From now on we can not
4014 generate any new pseudos. */
4017 /* If -opt, try combining insns through substitution. */
4021 TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
4023 /* Dump rtl code after insn combination. */
4027 dump_rtl (".combine", decl, print_rtl_with_bb, insns);
4028 if (graph_dump_format != no_graph)
4029 print_rtl_graph_with_bb (dump_base_name, ".combine", insns);
4036 /* Register allocation pre-pass, to reduce number of moves
4037 necessary for two-address machines. */
4038 if (optimize > 0 && (flag_regmove || flag_expensive_optimizations))
4041 open_dump_file (".regmove", decl_printable_name (decl, 2));
4043 TIMEVAR (regmove_time, regmove_optimize (insns, max_reg_num (),
4048 close_dump_file (print_rtl_with_bb, insns);
4049 if (graph_dump_format != no_graph)
4050 print_rtl_graph_with_bb (dump_base_name, ".regmove", insns);
4057 /* Print function header into sched dump now
4058 because doing the sched analysis makes some of the dump. */
4060 if (optimize > 0 && flag_schedule_insns)
4063 open_dump_file (".sched", decl_printable_name (decl, 2));
4065 /* Do control and data sched analysis,
4066 and write some of the results to dump file. */
4068 TIMEVAR (sched_time, schedule_insns (rtl_dump_file));
4070 /* Dump rtl after instruction scheduling. */
4074 close_dump_file (print_rtl_with_bb, insns);
4075 if (graph_dump_format != no_graph)
4076 print_rtl_graph_with_bb (dump_base_name, ".sched", insns);
4083 /* Determine if the current function is a leaf before running reload
4084 since this can impact optimizations done by the prologue and
4085 epilogue thus changing register elimination offsets. */
4086 current_function_is_leaf = leaf_function_p ();
4088 /* Unless we did stupid register allocation,
4089 allocate pseudo-regs that are used only within 1 basic block.
4091 RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the
4092 jump optimizer after register allocation and reloading are finished. */
4095 TIMEVAR (local_alloc_time,
4097 recompute_reg_usage (insns, ! optimize_size);
4098 regclass (insns, max_reg_num ());
4099 rebuild_label_notes_after_reload = local_alloc ();
4102 rebuild_label_notes_after_reload = 0;
4104 /* Dump rtl code after allocating regs within basic blocks. */
4108 open_dump_file (".lreg", decl_printable_name (decl, 2));
4110 TIMEVAR (dump_time, dump_flow_info (rtl_dump_file));
4111 TIMEVAR (dump_time, dump_local_alloc (rtl_dump_file));
4113 close_dump_file (print_rtl_with_bb, insns);
4114 if (graph_dump_format != no_graph)
4115 print_rtl_graph_with_bb (dump_base_name, ".lreg", insns);
4121 if (global_reg_dump)
4122 open_dump_file (".greg", decl_printable_name (decl, 2));
4124 /* Unless we did stupid register allocation,
4125 allocate remaining pseudo-regs, then do the reload pass
4126 fixing up any insns that are invalid. */
4128 TIMEVAR (global_alloc_time,
4131 failure = global_alloc (rtl_dump_file);
4133 failure = reload (insns, 0, rtl_dump_file);
4138 goto exit_rest_of_compilation;
4143 /* Do a very simple CSE pass over just the hard registers. */
4145 reload_cse_regs (insns);
4147 /* Register allocation and reloading may have turned an indirect jump into
4148 a direct jump. If so, we must rebuild the JUMP_LABEL fields of
4149 jumping instructions. */
4150 if (rebuild_label_notes_after_reload)
4151 TIMEVAR (jump_time, rebuild_jump_labels (insns));
4153 /* If optimizing and we are performing instruction scheduling after
4154 reload, then go ahead and split insns now since we are about to
4155 recompute flow information anyway.
4157 reload_cse_regs may expose more splitting opportunities, expecially
4158 for double-word operations. */
4159 if (optimize > 0 && flag_schedule_insns_after_reload)
4163 for (insn = insns; insn; insn = NEXT_INSN (insn))
4167 if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
4170 last = try_split (PATTERN (insn), insn, 1);
4174 PUT_CODE (insn, NOTE);
4175 NOTE_SOURCE_FILE (insn) = 0;
4176 NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
4181 if (global_reg_dump)
4183 TIMEVAR (dump_time, dump_global_regs (rtl_dump_file));
4184 close_dump_file (print_rtl_with_bb, insns);
4185 if (graph_dump_format != no_graph)
4186 print_rtl_graph_with_bb (dump_base_name, ".greg", insns);
4189 /* Re-create the death notes which were deleted during reload. */
4191 open_dump_file (".flow2", decl_printable_name (decl, 2));
4198 find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1);
4199 life_analysis (insns, max_reg_num (), rtl_dump_file, 1);
4206 flow2_completed = 1;
4208 /* On some machines, the prologue and epilogue code, or parts thereof,
4209 can be represented as RTL. Doing so lets us schedule insns between
4210 it and the rest of the code and also allows delayed branch
4211 scheduling to operate in the epilogue. */
4213 thread_prologue_and_epilogue_insns (insns);
4217 close_dump_file (print_rtl_with_bb, insns);
4218 if (graph_dump_format != no_graph)
4219 print_rtl_graph_with_bb (dump_base_name, ".flow2", insns);
4222 #ifdef HAVE_peephole2
4223 if (optimize > 0 && flag_peephole2)
4226 open_dump_file (".peephole2", decl_printable_name (decl, 2));
4228 peephole2_optimize (rtl_dump_file);
4232 close_dump_file (print_rtl_with_bb, insns);
4233 if (graph_dump_format != no_graph)
4234 print_rtl_graph_with_bb (dump_base_name, ".peephole2", insns);
4239 if (optimize > 0 && flag_schedule_insns_after_reload)
4242 open_dump_file (".sched2", decl_printable_name (decl, 2));
4244 /* Do control and data sched analysis again,
4245 and write some more of the results to dump file. */
4247 TIMEVAR (sched2_time, schedule_insns (rtl_dump_file));
4249 /* Dump rtl after post-reorder instruction scheduling. */
4253 close_dump_file (print_rtl_with_bb, insns);
4254 if (graph_dump_format != no_graph)
4255 print_rtl_graph_with_bb (dump_base_name, ".sched2", insns);
4262 #ifdef LEAF_REGISTERS
4263 current_function_uses_only_leaf_regs
4264 = optimize > 0 && only_leaf_regs_used () && leaf_function_p ();
4267 /* One more attempt to remove jumps to .+1
4268 left by dead-store-elimination.
4269 Also do cross-jumping this time
4270 and delete no-op move insns. */
4274 TIMEVAR (jump_time, jump_optimize (insns, JUMP_CROSS_JUMP,
4276 !JUMP_AFTER_REGSCAN));
4278 /* Dump rtl code after jump, if we are doing that. */
4282 dump_rtl (".jump2", decl, print_rtl_with_bb, insns);
4283 if (graph_dump_format != no_graph)
4284 print_rtl_graph_with_bb (dump_base_name, ".jump2", insns);
4288 /* If a machine dependent reorganization is needed, call it. */
4289 #ifdef MACHINE_DEPENDENT_REORG
4290 if (mach_dep_reorg_dump)
4291 open_dump_file (".mach", decl_printable_name (decl, 2));
4293 MACHINE_DEPENDENT_REORG (insns);
4295 if (mach_dep_reorg_dump)
4297 close_dump_file (print_rtl_with_bb, insns);
4298 if (graph_dump_format != no_graph)
4299 print_rtl_graph_with_bb (dump_base_name, ".mach", insns);
4306 /* If a scheduling pass for delayed branches is to be done,
4307 call the scheduling code. */
4310 if (optimize > 0 && flag_delayed_branch)
4313 open_dump_file (".dbr", decl_printable_name (decl, 2));
4315 TIMEVAR (dbr_sched_time, dbr_schedule (insns, rtl_dump_file));
4319 close_dump_file (print_rtl_with_bb, insns);
4320 if (graph_dump_format != no_graph)
4321 print_rtl_graph_with_bb (dump_base_name, ".dbr", insns);
4329 /* Shorten branches. */
4330 TIMEVAR (shorten_branch_time,
4332 shorten_branches (get_insns ());
4337 open_dump_file (".stack", decl_printable_name (decl, 2));
4339 TIMEVAR (stack_reg_time, reg_to_stack (insns, rtl_dump_file));
4343 dump_rtl (".stack", decl, print_rtl_with_bb, insns);
4344 if (graph_dump_format != no_graph)
4345 print_rtl_graph_with_bb (dump_base_name, ".stack", insns);
4352 /* Now turn the rtl into assembler code. */
4354 TIMEVAR (final_time,
4359 /* Get the function's name, as described by its RTL.
4360 This may be different from the DECL_NAME name used
4361 in the source file. */
4363 x = DECL_RTL (decl);
4364 if (GET_CODE (x) != MEM)
4367 if (GET_CODE (x) != SYMBOL_REF)
4369 fnname = XSTR (x, 0);
4371 assemble_start_function (decl, fnname);
4372 final_start_function (insns, asm_out_file, optimize);
4373 final (insns, asm_out_file, optimize, 0);
4374 final_end_function (insns, asm_out_file, optimize);
4375 assemble_end_function (decl, fnname);
4377 fflush (asm_out_file);
4379 /* Release all memory allocated by flow. */
4380 free_basic_block_vars (0);
4382 /* Release all memory held by regsets now */
4383 regset_release_memory ();
4389 /* Write DBX symbols if requested */
4391 /* Note that for those inline functions where we don't initially
4392 know for certain that we will be generating an out-of-line copy,
4393 the first invocation of this routine (rest_of_compilation) will
4394 skip over this code by doing a `goto exit_rest_of_compilation;'.
4395 Later on, finish_compilation will call rest_of_compilation again
4396 for those inline functions that need to have out-of-line copies
4397 generated. During that call, we *will* be routed past here. */
4399 #ifdef DBX_DEBUGGING_INFO
4400 if (write_symbols == DBX_DEBUG)
4401 TIMEVAR (symout_time, dbxout_function (decl));
4404 #ifdef DWARF_DEBUGGING_INFO
4405 if (write_symbols == DWARF_DEBUG)
4406 TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
4409 #ifdef DWARF2_DEBUGGING_INFO
4410 if (write_symbols == DWARF2_DEBUG)
4411 TIMEVAR (symout_time, dwarf2out_decl (decl));
4414 exit_rest_of_compilation:
4418 /* In case the function was not output,
4419 don't leave any temporary anonymous types
4420 queued up for sdb output. */
4421 #ifdef SDB_DEBUGGING_INFO
4422 if (write_symbols == SDB_DEBUG)
4423 sdbout_types (NULL_TREE);
4426 /* Put back the tree of subblocks and list of arguments
4427 from before we copied them.
4428 Code generation and the output of debugging info may have modified
4429 the copy, but the original is unchanged. */
4431 if (saved_block_tree != 0)
4433 DECL_INITIAL (decl) = saved_block_tree;
4434 DECL_ARGUMENTS (decl) = saved_arguments;
4435 DECL_ABSTRACT_ORIGIN (decl) = NULL_TREE;
4438 reload_completed = 0;
4439 flow2_completed = 0;
4442 TIMEVAR (final_time,
4444 /* Clear out the insn_length contents now that they are no
4446 init_insn_lengths ();
4448 /* Clear out the real_constant_chain before some of the rtx's
4449 it runs through become garbage. */
4450 clear_const_double_mem ();
4452 /* Cancel the effect of rtl_in_current_obstack. */
4453 resume_temporary_allocation ();
4455 /* Show no temporary slots allocated. */
4459 /* Make sure volatile mem refs aren't considered valid operands for
4460 arithmetic insns. We must call this here if this is a nested inline
4461 function, since the above code leaves us in the init_recog state
4462 (from final.c), and the function context push/pop code does not
4463 save/restore volatile_ok.
4465 ??? Maybe it isn't necessary for expand_start_function to call this
4466 anymore if we do it here? */
4468 init_recog_no_volatile ();
4470 /* We're done with this function. Free up memory if we can. */
4471 free_after_compilation (current_function);
4473 current_function = 0;
4478 /* The parsing time is all the time spent in yyparse
4479 *except* what is spent in this function. */
4481 parse_time -= get_run_time () - start_time;
4483 /* Reset global variables. */
4484 free_basic_block_vars (0);
4495 printf ("Usage: %s input [switches]\n", progname);
4496 printf ("Switches:\n");
4498 printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n");
4499 printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n");
4500 printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n");
4501 printf (" -finline-limit=<number> Limits the size of inlined functions to <number>\n");
4503 for (i = NUM_ELEM (f_options); i--;)
4505 const char * description = f_options[i].description;
4507 if (description != NULL && * description != 0)
4508 printf (" -f%-21s %s\n",
4509 f_options[i].string, description);
4512 printf (" -O[number] Set optimisation level to [number]\n");
4513 printf (" -Os Optimise for space rather than speed\n");
4514 printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n");
4515 printf (" -pedantic-errors Like -pedantic except that errors are produced\n");
4516 printf (" -w Suppress warnings\n");
4517 printf (" -W Enable extra warnings\n");
4519 for (i = NUM_ELEM (W_options); i--;)
4521 const char * description = W_options[i].description;
4523 if (description != NULL && * description != 0)
4524 printf (" -W%-21s %s\n",
4525 W_options[i].string, description);
4528 printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n");
4529 printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n");
4530 printf (" -p Enable function profiling\n");
4531 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER)
4532 printf (" -a Enable block profiling \n");
4534 #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT
4535 printf (" -ax Enable jump profiling \n");
4537 printf (" -o <file> Place output into <file> \n");
4538 printf (" -G <number> Put global and static data smaller than <number>\n");
4539 printf (" bytes into a special section (on some targets)\n");
4541 for (i = NUM_ELEM (debug_args); i--;)
4543 if (debug_args[i].description != NULL)
4544 printf (" -%-22s %s\n", debug_args[i].arg, debug_args[i].description);
4547 printf (" -aux-info <file> Emit declaration info into <file>.X\n");
4548 printf (" -quiet Do not display functions compiled or elapsed time\n");
4549 printf (" -version Display the compiler's version\n");
4550 printf (" -d[letters] Enable dumps from specific passes of the compiler\n");
4551 printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n");
4552 #if defined INSN_SCHEDULING
4553 printf (" -sched-verbose=<number> Set the verbosity level of the scheduler\n");
4555 printf (" --help Display this information\n");
4560 /* Display descriptions of language specific options.
4561 If there is no description, note that there is an undocumented option.
4562 If the description is empty, do not display anything. (This allows
4563 options to be deliberately undocumented, for whatever reason).
4564 If the option string is missing, then this is a marker, indicating
4565 that the description string is in fact the name of a language, whose
4566 language specific options are to follow. */
4568 if (NUM_ELEM (documented_lang_options) > 1)
4570 printf ("\nLanguage specific options:\n");
4572 for (i = 0; i < NUM_ELEM (documented_lang_options); i++)
4574 const char * description = documented_lang_options[i].description;
4575 const char * option = documented_lang_options[i].option;
4577 if (description == NULL)
4582 printf (" %-23.23s [undocumented]\n", option);
4584 else if (* description == 0)
4586 else if (option == NULL)
4590 ("\nThere are undocumented %s specific options as well.\n",
4594 printf ("\n Options for %s:\n", description);
4599 printf (" %-23.23s %s\n", option, description);
4604 printf ("\nThere are undocumented %s specific options as well.\n", lang);
4606 if (NUM_ELEM (target_switches) > 1
4607 #ifdef TARGET_OPTIONS
4608 || NUM_ELEM (target_options) > 1
4616 printf ("\nTarget specific options:\n");
4618 for (i = NUM_ELEM (target_switches); i--;)
4620 const char * option = target_switches[i].name;
4621 const char * description = target_switches[i].description;
4623 if (option == NULL || * option == 0)
4625 else if (description == NULL)
4630 printf (" -m%-21.21s [undocumented]\n", option);
4632 else if (* description != 0)
4633 doc += printf (" -m%-21.21s %s\n", option, description);
4636 #ifdef TARGET_OPTIONS
4637 for (i = NUM_ELEM (target_options); i--;)
4639 const char * option = target_options[i].prefix;
4640 const char * description = target_options[i].description;
4642 if (option == NULL || * option == 0)
4644 else if (description == NULL)
4649 printf (" -m%-21.21s [undocumented]\n", option);
4651 else if (* description != 0)
4652 doc += printf (" -m%-21.21s %s\n", option, description);
4658 printf ("\nThere are undocumented target specific options as well.\n");
4660 printf (" They exist, but they are not documented.\n");
4665 /* Compare the user specified 'option' with the language
4666 specific 'lang_option'. Return true if they match, or
4667 if 'option' is a viable prefix of 'lang_option'. */
4670 check_lang_option (option, lang_option)
4674 lang_independent_options * indep_options;
4679 /* Ignore NULL entries. */
4680 if (option == NULL || lang_option == NULL)
4683 if ((space = strchr (lang_option, ' ')) != NULL)
4684 len = space - lang_option;
4686 len = strlen (lang_option);
4688 /* If they do not match to the first n characters then fail. */
4689 if (strncmp (option, lang_option, len) != 0)
4692 /* Do not accept a lang option, if it matches a normal -f or -W
4693 option. Chill defines a -fpack, but we want to support
4696 /* An exact match is OK */
4697 if ((int) strlen (option) == len)
4700 /* If it is not an -f or -W option allow the match */
4701 if (option[0] != '-')
4706 case 'f': indep_options = f_options; break;
4707 case 'W': indep_options = W_options; break;
4711 /* The option is a -f or -W option.
4712 Skip past the prefix and search for the remainder in the
4713 appropriate table of options. */
4716 if (option[0] == 'n' && option[1] == 'o' && option[2] == '-')
4719 for (k = NUM_ELEM (indep_options); k--;)
4721 if (!strcmp (option, indep_options[k].string))
4723 /* The option matched a language independent option,
4724 do not allow the language specific match. */
4730 /* The option matches the start of the langauge specific option
4731 and it is not an exact match for a language independent option. */
4735 /* Entry point of cc1/c++. Decode command args, then call compile_file.
4736 Exit code is 35 if can't open files, 34 if fatal error,
4737 33 if had nonfatal errors, else success. */
4746 int flag_print_mem = 0;
4747 int version_flag = 0;
4750 /* save in case md file wants to emit args as a comment. */
4754 p = argv[0] + strlen (argv[0]);
4755 while (p != argv[0] && p[-1] != '/'
4756 #ifdef DIR_SEPARATOR
4757 && p[-1] != DIR_SEPARATOR
4763 #if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
4764 /* Get rid of any avoidable limit on stack size. */
4768 /* Set the stack limit huge so that alloca does not fail. */
4769 getrlimit (RLIMIT_STACK, &rlim);
4770 rlim.rlim_cur = rlim.rlim_max;
4771 setrlimit (RLIMIT_STACK, &rlim);
4775 #ifdef HAVE_LC_MESSAGES
4776 setlocale (LC_MESSAGES, "");
4778 (void) bindtextdomain (PACKAGE, localedir);
4779 (void) textdomain (PACKAGE);
4781 signal (SIGFPE, float_signal);
4784 signal (SIGPIPE, pipe_closed);
4787 decl_printable_name = decl_name;
4788 lang_expand_expr = (lang_expand_expr_t) do_abort;
4790 /* Initialize whether `char' is signed. */
4791 flag_signed_char = DEFAULT_SIGNED_CHAR;
4792 #ifdef DEFAULT_SHORT_ENUMS
4793 /* Initialize how much space enums occupy, by default. */
4794 flag_short_enums = DEFAULT_SHORT_ENUMS;
4797 /* Initialize the garbage-collector. */
4799 ggc_add_root (&input_file_stack, 1, sizeof input_file_stack,
4802 /* Perform language-specific options intialization. */
4803 lang_init_options ();
4805 /* Scan to see what optimization level has been specified. That will
4806 determine the default value of many flags. */
4807 for (i = 1; i < argc; i++)
4809 if (!strcmp (argv[i], "-O"))
4814 else if (argv[i][0] == '-' && argv[i][1] == 'O')
4816 /* Handle -Os, -O2, -O3, -O69, ... */
4817 char *p = &argv[i][2];
4819 if ((p[0] == 's') && (p[1] == 0))
4823 /* Optimizing for size forces optimize to be 2. */
4828 const int optimize_val = read_integral_parameter (p, p - 2, -1);
4829 if (optimize_val != -1)
4831 optimize = optimize_val;
4838 obey_regdecls = (optimize == 0);
4843 flag_thread_jumps = 1;
4845 flag_delayed_branch = 1;
4847 #ifdef CAN_DEBUG_WITHOUT_FP
4848 flag_omit_frame_pointer = 1;
4854 flag_cse_follow_jumps = 1;
4855 flag_cse_skip_blocks = 1;
4857 flag_expensive_optimizations = 1;
4858 flag_strength_reduce = 1;
4859 flag_rerun_cse_after_loop = 1;
4860 flag_rerun_loop_opt = 1;
4861 flag_caller_saves = 1;
4864 #ifdef INSN_SCHEDULING
4865 flag_schedule_insns = 1;
4866 flag_schedule_insns_after_reload = 1;
4869 flag_strict_aliasing = 1;
4874 flag_inline_functions = 1;
4877 if (optimize < 2 || optimize_size)
4882 align_functions = 1;
4885 /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
4888 set_target_switch ("");
4890 #ifdef OPTIMIZATION_OPTIONS
4891 /* Allow default optimizations to be specified on a per-machine basis. */
4892 OPTIMIZATION_OPTIONS (optimize, optimize_size);
4895 /* Initialize register usage now so switches may override. */
4898 for (i = 1; i < argc; i++)
4902 /* If this is a language-specific option,
4903 decode it in a language-specific way. */
4904 for (j = NUM_ELEM (documented_lang_options); j--;)
4905 if (check_lang_option (argv[i], documented_lang_options[j].option))
4908 if (j != (size_t)-1)
4910 /* If the option is valid for *some* language,
4911 treat it as valid even if this language doesn't understand it. */
4912 int strings_processed = lang_decode_option (argc - i, argv + i);
4914 if (!strcmp (argv[i], "--help"))
4920 if (strings_processed != 0)
4921 i += strings_processed - 1;
4923 else if (argv[i][0] == '-' && argv[i][1] != 0)
4925 register char *str = argv[i] + 1;
4930 set_target_switch (&str[1]);
4931 else if (!strcmp (str, "dumpbase"))
4933 dump_base_name = argv[++i];
4935 else if (str[0] == 'd')
4937 register char *p = &str[1];
4942 branch_prob_dump = 1;
4949 global_reg_dump = 1;
4957 cse_dump = 1, cse2_dump = 1;
4964 #ifdef MACHINE_DEPENDENT_REORG
4965 mach_dep_reorg_dump = 1;
4973 branch_prob_dump = 1;
4990 global_reg_dump = 1;
5015 #ifdef MACHINE_DEPENDENT_REORG
5017 mach_dep_reorg_dump = 1;
5021 flag_print_asm_name = 1;
5042 graph_dump_format = vcg;
5048 rtl_dump_and_exit = 1;
5056 case 'D': /* these are handled by the preprocessor */
5060 warning ("unrecognised gcc debugging option: %c", p[-1]);
5064 else if (str[0] == 'f')
5066 register char *p = &str[1];
5069 /* Some kind of -f option.
5070 P's value is the option sans `-f'.
5071 Search for it in the table of options. */
5074 !found && j < sizeof (f_options) / sizeof (f_options[0]);
5077 if (!strcmp (p, f_options[j].string))
5079 *f_options[j].variable = f_options[j].on_value;
5080 /* A goto here would be cleaner,
5081 but breaks the vax pcc. */
5084 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
5085 && ! strcmp (p+3, f_options[j].string))
5087 *f_options[j].variable = ! f_options[j].on_value;
5094 else if (!strncmp (p, "inline-limit-", 13)
5095 || !strncmp (p, "inline-limit=", 13))
5097 read_integral_parameter (p + 13, p - 2, inline_max_insns);
5098 #ifdef INSN_SCHEDULING
5099 else if (!strncmp (p, "sched-verbose=",14))
5100 fix_sched_param("verbose",&p[14]);
5102 else if (!strncmp (p, "fixed-", 6))
5103 fix_register (&p[6], 1, 1);
5104 else if (!strncmp (p, "call-used-", 10))
5105 fix_register (&p[10], 0, 1);
5106 else if (!strncmp (p, "call-saved-", 11))
5107 fix_register (&p[11], 0, 0);
5108 else if (!strncmp (p, "align-loops=", 12))
5109 align_loops = read_integral_parameter (p + 12, p - 2,
5111 else if (!strncmp (p, "align-functions=", 16))
5112 align_functions = read_integral_parameter (p + 16, p - 2,
5114 else if (!strncmp (p, "align-jumps=", 12))
5115 align_jumps = read_integral_parameter (p + 12, p - 2,
5117 else if (!strncmp (p, "align-labels=", 13))
5118 align_labels = read_integral_parameter (p + 13, p - 2,
5121 error ("Invalid option `%s'", argv[i]);
5123 else if (str[0] == 'O')
5125 /* Already been treated above. Do nothing. */
5127 else if (!strcmp (str, "pedantic"))
5129 else if (!strcmp (str, "pedantic-errors"))
5130 flag_pedantic_errors = pedantic = 1;
5131 else if (!strcmp (str, "quiet"))
5133 else if (!strcmp (str, "version"))
5135 else if (!strcmp (str, "w"))
5136 inhibit_warnings = 1;
5137 else if (!strcmp (str, "W"))
5140 /* We save the value of warn_uninitialized, since if they put
5141 -Wuninitialized on the command line, we need to generate a
5142 warning about not using it without also specifying -O. */
5143 if (warn_uninitialized != 1)
5144 warn_uninitialized = 2;
5146 else if (str[0] == 'W')
5148 register char *p = &str[1];
5151 /* Some kind of -W option.
5152 P's value is the option sans `-W'.
5153 Search for it in the table of options. */
5156 !found && j < sizeof (W_options) / sizeof (W_options[0]);
5159 if (!strcmp (p, W_options[j].string))
5161 *W_options[j].variable = W_options[j].on_value;
5162 /* A goto here would be cleaner,
5163 but breaks the vax pcc. */
5166 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
5167 && ! strcmp (p+3, W_options[j].string))
5169 *W_options[j].variable = ! W_options[j].on_value;
5176 else if (!strncmp (p, "id-clash-", 9))
5178 const int id_clash_val
5179 = read_integral_parameter (p + 9, p - 2, -1);
5180 if (id_clash_val != -1)
5182 id_clash_len = id_clash_val;
5186 else if (!strncmp (p, "larger-than-", 12))
5188 const int larger_than_val
5189 = read_integral_parameter (p + 12, p - 2, -1);
5190 if (larger_than_val != -1)
5192 larger_than_size = larger_than_val;
5193 warn_larger_than = 1;
5197 error ("Invalid option `%s'", argv[i]);
5199 else if (!strcmp (str, "p"))
5203 else if (!strcmp (str, "a"))
5205 #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5206 warning ("`-a' option (basic block profile) not supported");
5208 profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
5211 else if (!strcmp (str, "ax"))
5213 #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
5214 warning ("`-ax' option (jump profiling) not supported");
5216 profile_block_flag = (!profile_block_flag
5217 || profile_block_flag == 2) ? 2 : 3;
5220 else if (str[0] == 'g')
5223 /* A lot of code assumes write_symbols == NO_DEBUG if the
5224 debugging level is 0 (thus -gstabs1 -gstabs0 would lose track
5225 of what debugging type has been selected). This records the
5226 selected type. It is an error to specify more than one
5228 static enum debug_info_type selected_debug_type = NO_DEBUG;
5229 /* Non-zero if debugging format has been explicitly set.
5230 -g and -ggdb don't explicitly set the debugging format so
5231 -gdwarf -g3 is equivalent to -gdwarf3. */
5232 static int type_explicitly_set_p = 0;
5233 /* Indexed by enum debug_info_type. */
5234 static const char *debug_type_names[] =
5236 "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff"
5239 /* The maximum admissible debug level value. */
5240 static const unsigned max_debug_level = 3;
5242 /* Look up STR in the table. */
5243 for (da = debug_args; da->arg; da++)
5245 const int da_len = strlen (da->arg);
5247 if (! strncmp (str, da->arg, da_len))
5249 enum debug_info_type type = da->debug_type;
5250 const char *p = str + da_len;
5252 if (*p && (*p < '0' || *p > '9'))
5255 /* A debug flag without a level defaults to level 2.
5256 Note we do not want to call read_integral_parameter
5257 for that case since it will call atoi which
5260 ??? We may want to generalize the interface to
5261 read_integral_parameter to better handle this case
5262 if this case shows up often. */
5264 level = read_integral_parameter (p, 0,
5265 max_debug_level + 1);
5269 if (da_len > 1 && *p && !strncmp (str, "gdwarf", da_len))
5271 error ("use -gdwarf -g%d for DWARF v1, level %d",
5274 error ("use -gdwarf-2 for DWARF v2");
5277 if (level > max_debug_level)
5279 warning ("ignoring option `%s' due to invalid debug level specification",
5281 level = debug_info_level;
5284 if (type == NO_DEBUG)
5286 type = PREFERRED_DEBUGGING_TYPE;
5287 if (da_len > 1 && strncmp (str, "ggdb", da_len) == 0)
5289 #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2)
5290 type = DWARF2_DEBUG;
5292 #ifdef DBX_DEBUGGING_INFO
5299 if (type == NO_DEBUG)
5300 warning ("`-%s' not supported by this configuration of GCC",
5303 /* Does it conflict with an already selected type? */
5304 if (type_explicitly_set_p
5305 /* -g/-ggdb don't conflict with anything */
5306 && da->debug_type != NO_DEBUG
5307 && type != selected_debug_type)
5308 warning ("`-%s' ignored, conflicts with `-g%s'",
5309 str, debug_type_names[(int) selected_debug_type]);
5312 /* If the format has already been set, -g/-ggdb
5313 only change the debug level. */
5314 if (type_explicitly_set_p
5315 && da->debug_type == NO_DEBUG)
5316 ; /* don't change debugging type */
5319 selected_debug_type = type;
5320 type_explicitly_set_p = da->debug_type != NO_DEBUG;
5322 write_symbols = (level == 0
5324 : selected_debug_type);
5325 use_gnu_debug_info_extensions = da->use_extensions_p;
5326 debug_info_level = (enum debug_info_level) level;
5332 warning ("`-%s' not supported by this configuration of GCC",
5335 else if (!strcmp (str, "o"))
5337 asm_file_name = argv[++i];
5339 else if (str[0] == 'G')
5341 const int g_switch_val = (str[1] != '\0') ?
5342 read_integral_parameter(str + 1, 0, -1) :
5343 read_integral_parameter(argv[++i], 0, -1);
5345 if (g_switch_val != -1)
5347 g_switch_set = TRUE;
5348 g_switch_value = g_switch_val;
5352 error("Invalid option `-%s'",str);
5355 else if (!strncmp (str, "aux-info", 8))
5357 flag_gen_aux_info = 1;
5358 aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
5360 else if (!strcmp (str, "-help"))
5366 error ("Invalid option `%s'", argv[i]);
5368 else if (argv[i][0] == '+')
5369 error ("Invalid option `%s'", argv[i]);
5374 /* Checker uses the frame pointer. */
5375 if (flag_check_memory_usage)
5376 flag_omit_frame_pointer = 0;
5380 /* Inlining does not work if not optimizing,
5381 so force it not to be done. */
5385 /* The c_decode_option and lang_decode_option functions set
5386 this to `2' if -Wall is used, so we can avoid giving out
5387 lots of errors for people who don't realize what -Wall does. */
5388 if (warn_uninitialized == 1)
5389 warning ("-Wuninitialized is not supported without -O");
5392 #ifdef OVERRIDE_OPTIONS
5393 /* Some machines may reject certain combinations of options. */
5397 if (exceptions_via_longjmp == 2)
5399 #ifdef DWARF2_UNWIND_INFO
5400 exceptions_via_longjmp = ! DWARF2_UNWIND_INFO;
5402 exceptions_via_longjmp = 1;
5406 /* Set up the align_*_log variables, defaulting them to 1 if they
5407 were still unset. */
5408 if (align_loops <= 0) align_loops = 1;
5409 align_loops_log = floor_log2 (align_loops*2-1);
5410 if (align_jumps <= 0) align_jumps = 1;
5411 align_jumps_log = floor_log2 (align_jumps*2-1);
5412 if (align_labels <= 0) align_labels = 1;
5413 align_labels_log = floor_log2 (align_labels*2-1);
5414 if (align_functions <= 0) align_functions = 1;
5415 align_functions_log = floor_log2 (align_functions*2-1);
5417 if (profile_block_flag == 3)
5419 warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
5420 profile_block_flag = 2;
5423 /* Unrolling all loops implies that standard loop unrolling must also
5425 if (flag_unroll_all_loops)
5426 flag_unroll_loops = 1;
5427 /* Loop unrolling requires that strength_reduction be on also. Silently
5428 turn on strength reduction here if it isn't already on. Also, the loop
5429 unrolling code assumes that cse will be run after loop, so that must
5430 be turned on also. */
5431 if (flag_unroll_loops)
5433 flag_strength_reduce = 1;
5434 flag_rerun_cse_after_loop = 1;
5437 /* Warn about options that are not supported on this machine. */
5438 #ifndef INSN_SCHEDULING
5439 if (flag_schedule_insns || flag_schedule_insns_after_reload)
5440 warning ("instruction scheduling not supported on this target machine");
5443 if (flag_delayed_branch)
5444 warning ("this target machine does not have delayed branches");
5447 user_label_prefix = USER_LABEL_PREFIX;
5448 if (flag_leading_underscore != -1)
5450 /* If the default prefix is more complicated than "" or "_",
5451 issue a warning and ignore this option. */
5452 if (user_label_prefix[0] == 0 ||
5453 (user_label_prefix[0] == '_' && user_label_prefix[1] == 0))
5455 user_label_prefix = flag_leading_underscore ? "_" : "";
5458 warning ("-f%sleading-underscore not supported on this target machine",
5459 flag_leading_underscore ? "" : "no-");
5462 /* If we are in verbose mode, write out the version and maybe all the
5463 option flags in use. */
5466 print_version (stderr, "");
5468 print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
5471 compile_file (filename);
5473 #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX)
5476 char *lim = (char *) sbrk (0);
5478 notice ("Data size %ld.\n", (long) (lim - (char *) &environ));
5483 system ("ps -l 1>&2");
5486 #endif /* not USG */
5489 #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */
5492 exit (FATAL_EXIT_CODE);
5494 exit (FATAL_EXIT_CODE);
5495 exit (SUCCESS_EXIT_CODE);
5499 /* Decode -m switches. */
5500 /* Decode the switch -mNAME. */
5503 set_target_switch (name)
5507 int valid_target_option = 0;
5509 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
5510 if (!strcmp (target_switches[j].name, name))
5512 if (target_switches[j].value < 0)
5513 target_flags &= ~-target_switches[j].value;
5515 target_flags |= target_switches[j].value;
5516 valid_target_option = 1;
5519 #ifdef TARGET_OPTIONS
5520 if (!valid_target_option)
5521 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
5523 int len = strlen (target_options[j].prefix);
5524 if (!strncmp (target_options[j].prefix, name, len))
5526 *target_options[j].variable = name + len;
5527 valid_target_option = 1;
5532 if (!valid_target_option)
5533 error ("Invalid option `%s'", name);
5536 /* Print version information to FILE.
5537 Each line begins with INDENT (for the case where FILE is the
5538 assembler output file). */
5541 print_version (file, indent)
5546 #define __VERSION__ "[?]"
5550 "%s%s%s version %s (%s) compiled by GNU C version %s.\n"
5552 "%s%s%s version %s (%s) compiled by CC.\n"
5554 , indent, *indent != 0 ? " " : "",
5555 language_string, version_string, TARGET_NAME, __VERSION__);
5558 /* Print an option value and return the adjusted position in the line.
5559 ??? We don't handle error returns from fprintf (disk full); presumably
5560 other code will catch a disk full though. */
5563 print_single_switch (file, pos, max, indent, sep, term, type, name)
5566 const char *indent, *sep, *term, *type, *name;
5568 /* The ultrix fprintf returns 0 on success, so compute the result we want
5569 here since we need it for the following test. */
5570 int len = strlen (sep) + strlen (type) + strlen (name);
5575 fprintf (file, "%s", term);
5580 fprintf (file, "%s", indent);
5581 pos = strlen (indent);
5583 fprintf (file, "%s%s%s", sep, type, name);
5588 /* Print active target switches to FILE.
5589 POS is the current cursor position and MAX is the size of a "line".
5590 Each line begins with INDENT and ends with TERM.
5591 Each switch is separated from the next by SEP. */
5594 print_switch_values (file, pos, max, indent, sep, term)
5597 const char *indent, *sep, *term;
5602 /* Print the options as passed. */
5604 pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
5605 _("options passed: "), "");
5607 for (p = &save_argv[1]; *p != NULL; p++)
5611 if (strcmp (*p, "-o") == 0)
5617 if (strcmp (*p, "-quiet") == 0)
5619 if (strcmp (*p, "-version") == 0)
5624 pos = print_single_switch (file, pos, max, indent, sep, term, *p, "");
5627 fprintf (file, "%s", term);
5629 /* Print the -f and -m options that have been enabled.
5630 We don't handle language specific options but printing argv
5633 pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
5634 _("options enabled: "), "");
5636 for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
5637 if (*f_options[j].variable == f_options[j].on_value)
5638 pos = print_single_switch (file, pos, max, indent, sep, term,
5639 "-f", f_options[j].string);
5641 /* Print target specific options. */
5643 for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
5644 if (target_switches[j].name[0] != '\0'
5645 && target_switches[j].value > 0
5646 && ((target_switches[j].value & target_flags)
5647 == target_switches[j].value))
5649 pos = print_single_switch (file, pos, max, indent, sep, term,
5650 "-m", target_switches[j].name);
5653 #ifdef TARGET_OPTIONS
5654 for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
5655 if (*target_options[j].variable != NULL)
5658 sprintf (prefix, "-m%s", target_options[j].prefix);
5659 pos = print_single_switch (file, pos, max, indent, sep, term,
5660 prefix, *target_options[j].variable);
5664 fprintf (file, "%s", term);
5667 /* Record the beginning of a new source file, named FILENAME. */
5670 debug_start_source_file (filename)
5671 register char *filename ATTRIBUTE_UNUSED;
5673 #ifdef DBX_DEBUGGING_INFO
5674 if (write_symbols == DBX_DEBUG)
5675 dbxout_start_new_source_file (filename);
5677 #ifdef DWARF_DEBUGGING_INFO
5678 if (debug_info_level == DINFO_LEVEL_VERBOSE
5679 && write_symbols == DWARF_DEBUG)
5680 dwarfout_start_new_source_file (filename);
5681 #endif /* DWARF_DEBUGGING_INFO */
5682 #ifdef DWARF2_DEBUGGING_INFO
5683 if (debug_info_level == DINFO_LEVEL_VERBOSE
5684 && write_symbols == DWARF2_DEBUG)
5685 dwarf2out_start_source_file (filename);
5686 #endif /* DWARF2_DEBUGGING_INFO */
5687 #ifdef SDB_DEBUGGING_INFO
5688 if (write_symbols == SDB_DEBUG)
5689 sdbout_start_new_source_file (filename);
5693 /* Record the resumption of a source file. LINENO is the line number in
5694 the source file we are returning to. */
5697 debug_end_source_file (lineno)
5698 register unsigned lineno ATTRIBUTE_UNUSED;
5700 #ifdef DBX_DEBUGGING_INFO
5701 if (write_symbols == DBX_DEBUG)
5702 dbxout_resume_previous_source_file ();
5704 #ifdef DWARF_DEBUGGING_INFO
5705 if (debug_info_level == DINFO_LEVEL_VERBOSE
5706 && write_symbols == DWARF_DEBUG)
5707 dwarfout_resume_previous_source_file (lineno);
5708 #endif /* DWARF_DEBUGGING_INFO */
5709 #ifdef DWARF2_DEBUGGING_INFO
5710 if (debug_info_level == DINFO_LEVEL_VERBOSE
5711 && write_symbols == DWARF2_DEBUG)
5712 dwarf2out_end_source_file ();
5713 #endif /* DWARF2_DEBUGGING_INFO */
5714 #ifdef SDB_DEBUGGING_INFO
5715 if (write_symbols == SDB_DEBUG)
5716 sdbout_resume_previous_source_file ();
5720 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5721 the tail part of the directive line, i.e. the part which is past the
5722 initial whitespace, #, whitespace, directive-name, whitespace part. */
5725 debug_define (lineno, buffer)
5726 register unsigned lineno ATTRIBUTE_UNUSED;
5727 register char *buffer ATTRIBUTE_UNUSED;
5729 #ifdef DWARF_DEBUGGING_INFO
5730 if (debug_info_level == DINFO_LEVEL_VERBOSE
5731 && write_symbols == DWARF_DEBUG)
5732 dwarfout_define (lineno, buffer);
5733 #endif /* DWARF_DEBUGGING_INFO */
5734 #ifdef DWARF2_DEBUGGING_INFO
5735 if (debug_info_level == DINFO_LEVEL_VERBOSE
5736 && write_symbols == DWARF2_DEBUG)
5737 dwarf2out_define (lineno, buffer);
5738 #endif /* DWARF2_DEBUGGING_INFO */
5741 /* Called from check_newline in c-parse.y. The `buffer' parameter contains
5742 the tail part of the directive line, i.e. the part which is past the
5743 initial whitespace, #, whitespace, directive-name, whitespace part. */
5746 debug_undef (lineno, buffer)
5747 register unsigned lineno ATTRIBUTE_UNUSED;
5748 register char *buffer ATTRIBUTE_UNUSED;
5750 #ifdef DWARF_DEBUGGING_INFO
5751 if (debug_info_level == DINFO_LEVEL_VERBOSE
5752 && write_symbols == DWARF_DEBUG)
5753 dwarfout_undef (lineno, buffer);
5754 #endif /* DWARF_DEBUGGING_INFO */
5755 #ifdef DWARF2_DEBUGGING_INFO
5756 if (debug_info_level == DINFO_LEVEL_VERBOSE
5757 && write_symbols == DWARF2_DEBUG)
5758 dwarf2out_undef (lineno, buffer);
5759 #endif /* DWARF2_DEBUGGING_INFO */