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4291d9c8 | 1 | /* Top level of GNU C compiler |
87e11268 | 2 | Copyright (C) 1987, 88, 89, 92-98, 1999 Free Software Foundation, Inc. |
4291d9c8 RS |
3 | |
4 | This file is part of GNU CC. | |
5 | ||
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) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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 | |
e9fa0c7c RK |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
4291d9c8 | 20 | |
4291d9c8 RS |
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. */ | |
25 | ||
26 | #include "config.h" | |
670ee920 KG |
27 | #undef FLOAT /* This is for hpux. They should change hpux. */ |
28 | #undef FFS /* Some systems define this in param.h. */ | |
29 | #include "system.h" | |
4291d9c8 RS |
30 | #include <signal.h> |
31 | #include <setjmp.h> | |
956d6950 JL |
32 | |
33 | #ifdef HAVE_SYS_RESOURCE_H | |
34 | # include <sys/resource.h> | |
35 | #endif | |
36 | ||
37 | #ifdef HAVE_SYS_TIMES_H | |
38 | # include <sys/times.h> | |
eb910b5a | 39 | #endif |
4291d9c8 RS |
40 | |
41 | #include "input.h" | |
42 | #include "tree.h" | |
4291d9c8 RS |
43 | #include "rtl.h" |
44 | #include "flags.h" | |
45 | #include "insn-attr.h" | |
e5e809f4 JL |
46 | #include "insn-codes.h" |
47 | #include "insn-config.h" | |
48 | #include "recog.h" | |
d0d4af87 | 49 | #include "defaults.h" |
e14417fa | 50 | #include "output.h" |
3d195391 | 51 | #include "except.h" |
a0c8e1b2 | 52 | #include "toplev.h" |
114791ea | 53 | #include "expr.h" |
f246a305 | 54 | |
76ead72b RL |
55 | #ifdef DWARF_DEBUGGING_INFO |
56 | #include "dwarfout.h" | |
57 | #endif | |
58 | ||
59 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
60 | #include "dwarf2out.h" | |
61 | #endif | |
62 | ||
4f70758f | 63 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
64 | #include "dbxout.h" |
65 | #endif | |
66 | ||
67 | #ifdef SDB_DEBUGGING_INFO | |
68 | #include "sdbout.h" | |
69 | #endif | |
70 | ||
f246a305 RS |
71 | #ifdef XCOFF_DEBUGGING_INFO |
72 | #include "xcoffout.h" | |
73 | #endif | |
4291d9c8 RS |
74 | \f |
75 | #ifdef VMS | |
76 | /* The extra parameters substantially improve the I/O performance. */ | |
77 | static FILE * | |
37c9f674 | 78 | vms_fopen (fname, type) |
4291d9c8 RS |
79 | char * fname; |
80 | char * type; | |
81 | { | |
37c9f674 RK |
82 | /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two |
83 | fixed arguments, which matches ANSI's specification but not VAXCRTL's | |
84 | pre-ANSI implementation. This hack circumvents the mismatch problem. */ | |
85 | FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen; | |
86 | ||
87 | if (*type == 'w') | |
88 | return (*vmslib_fopen) (fname, type, "mbc=32", | |
89 | "deq=64", "fop=tef", "shr=nil"); | |
90 | else | |
91 | return (*vmslib_fopen) (fname, type, "mbc=32"); | |
4291d9c8 | 92 | } |
37c9f674 RK |
93 | #define fopen vms_fopen |
94 | #endif /* VMS */ | |
4291d9c8 RS |
95 | |
96 | #ifndef DEFAULT_GDB_EXTENSIONS | |
97 | #define DEFAULT_GDB_EXTENSIONS 1 | |
98 | #endif | |
99 | ||
30657ee3 RK |
100 | /* If more than one debugging type is supported, you must define |
101 | PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way. | |
102 | ||
103 | This is one long line cause VAXC can't handle a \-newline. */ | |
9a666dda | 104 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) |
30657ee3 RK |
105 | #ifndef PREFERRED_DEBUGGING_TYPE |
106 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! | |
107 | #endif /* no PREFERRED_DEBUGGING_TYPE */ | |
108 | #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE | |
109 | so the following code needn't care. */ | |
110 | #ifdef DBX_DEBUGGING_INFO | |
111 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
112 | #endif | |
113 | #ifdef SDB_DEBUGGING_INFO | |
114 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG | |
115 | #endif | |
116 | #ifdef DWARF_DEBUGGING_INFO | |
117 | #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG | |
118 | #endif | |
9a666dda JM |
119 | #ifdef DWARF2_DEBUGGING_INFO |
120 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
121 | #endif | |
30657ee3 RK |
122 | #ifdef XCOFF_DEBUGGING_INFO |
123 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG | |
124 | #endif | |
125 | #endif /* More than one debugger format enabled. */ | |
126 | ||
127 | /* If still not defined, must have been because no debugging formats | |
128 | are supported. */ | |
129 | #ifndef PREFERRED_DEBUGGING_TYPE | |
130 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG | |
131 | #endif | |
132 | ||
4291d9c8 RS |
133 | extern int rtx_equal_function_value_matters; |
134 | ||
72c8bb7f | 135 | #if ! (defined (VMS) || defined (OS2)) |
4291d9c8 | 136 | extern char **environ; |
4d7e336b | 137 | #endif |
4291d9c8 RS |
138 | extern char *version_string, *language_string; |
139 | ||
b0316e35 RS |
140 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
141 | to ASM_FINISH_DECLARE_OBJECT. */ | |
142 | ||
143 | extern int size_directive_output; | |
5e10b3cc | 144 | extern tree last_assemble_variable_decl; |
b0316e35 | 145 | |
5c60e5c0 | 146 | extern char *init_parse PVPROTO((char *)); |
e56e519d | 147 | extern void finish_parse (); |
4291d9c8 RS |
148 | extern void init_decl_processing (); |
149 | extern void init_obstacks (); | |
150 | extern void init_tree_codes (); | |
151 | extern void init_rtl (); | |
34d0205f | 152 | extern void init_regs (); |
4291d9c8 RS |
153 | extern void init_optabs (); |
154 | extern void init_stmt (); | |
155 | extern void init_reg_sets (); | |
156 | extern void dump_flow_info (); | |
157 | extern void dump_sched_info (); | |
158 | extern void dump_local_alloc (); | |
9ddca353 | 159 | extern void regset_release_memory (); |
4291d9c8 | 160 | |
032713aa NC |
161 | extern void print_rtl (); |
162 | extern void print_rtl_with_bb (); | |
163 | ||
4291d9c8 | 164 | void rest_of_decl_compilation (); |
87e11268 | 165 | static void set_target_switch PROTO((const char *)); |
0e05e8ea | 166 | static char *decl_name PROTO((tree, int)); |
87e11268 KG |
167 | static void vmessage PROTO((const char *, const char *, va_list)); |
168 | static void v_message_with_file_and_line PROTO((const char *, int, | |
169 | const char *, const char *, | |
170 | va_list)); | |
171 | static void v_message_with_decl PROTO((tree, const char *, | |
172 | const char *, va_list)); | |
0e05e8ea | 173 | static void file_and_line_for_asm PROTO((rtx, char **, int *)); |
87e11268 KG |
174 | static void v_error_with_file_and_line PROTO((const char *, int, |
175 | const char *, va_list)); | |
176 | static void v_error_with_decl PROTO((tree, const char *, va_list)); | |
177 | static void v_error_for_asm PROTO((rtx, const char *, va_list)); | |
178 | static void verror PROTO((const char *, va_list)); | |
179 | static void vfatal PROTO((const char *, va_list)) ATTRIBUTE_NORETURN; | |
180 | static void v_warning_with_file_and_line PROTO ((const char *, int, | |
181 | const char *, va_list)); | |
182 | static void v_warning_with_decl PROTO((tree, const char *, va_list)); | |
183 | static void v_warning_for_asm PROTO((rtx, const char *, va_list)); | |
184 | static void vwarning PROTO((const char *, va_list)); | |
185 | static void vpedwarn PROTO((const char *, va_list)); | |
186 | static void v_pedwarn_with_decl PROTO((tree, const char *, va_list)); | |
187 | static void v_pedwarn_with_file_and_line PROTO((const char *, int, | |
188 | const char *, va_list)); | |
189 | static void vsorry PROTO((const char *, va_list)); | |
190 | static void v_really_sorry PROTO((const char *, va_list)) ATTRIBUTE_NORETURN; | |
bf94d1ec KG |
191 | static void float_signal PROTO((int)) ATTRIBUTE_NORETURN; |
192 | static void pipe_closed PROTO((int)) ATTRIBUTE_NORETURN; | |
444bf316 | 193 | #ifdef ASM_IDENTIFY_LANGUAGE |
47c3ed98 KG |
194 | /* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */ |
195 | static void output_lang_identify PROTO((FILE *)) ATTRIBUTE_UNUSED; | |
444bf316 | 196 | #endif |
87e11268 | 197 | static void open_dump_file PROTO((const char *, const char *)); |
0e05e8ea | 198 | static void close_dump_file PROTO((void (*) (FILE *, rtx), rtx)); |
87e11268 KG |
199 | static void dump_rtl PROTO((const char *, tree, void (*) (FILE *, rtx), rtx)); |
200 | static void clean_dump_file PROTO((const char *)); | |
0e05e8ea | 201 | static void compile_file PROTO((char *)); |
b8468bc7 | 202 | static void display_help PROTO ((void)); |
4291d9c8 | 203 | |
87e11268 KG |
204 | static void print_version PROTO((FILE *, const char *)); |
205 | static int print_single_switch PROTO((FILE *, int, int, const char *, | |
206 | const char *, const char *, | |
207 | const char *, const char *)); | |
208 | static void print_switch_values PROTO((FILE *, int, int, const char *, | |
209 | const char *, const char *)); | |
735a0e33 UD |
210 | |
211 | void print_rtl_graph_with_bb PROTO ((const char *, const char *, rtx)); | |
212 | void clean_graph_dump_file PROTO ((const char *, const char *)); | |
213 | void finish_graph_dump_file PROTO ((const char *, const char *)); | |
3d5cdd42 DE |
214 | /* Length of line when printing switch values. */ |
215 | #define MAX_LINE 75 | |
216 | ||
4291d9c8 RS |
217 | /* Name of program invoked, sans directories. */ |
218 | ||
219 | char *progname; | |
220 | ||
221 | /* Copy of arguments to main. */ | |
222 | int save_argc; | |
223 | char **save_argv; | |
224 | \f | |
225 | /* Name of current original source file (what was input to cpp). | |
226 | This comes from each #-command in the actual input. */ | |
227 | ||
228 | char *input_filename; | |
229 | ||
230 | /* Name of top-level original source file (what was input to cpp). | |
231 | This comes from the #-command at the beginning of the actual input. | |
232 | If there isn't any there, then this is the cc1 input file name. */ | |
233 | ||
234 | char *main_input_filename; | |
235 | ||
4291d9c8 RS |
236 | /* Current line number in real source file. */ |
237 | ||
238 | int lineno; | |
239 | ||
f1db3576 JL |
240 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
241 | int no_new_pseudos; | |
242 | ||
4291d9c8 RS |
243 | /* Stack of currently pending input files. */ |
244 | ||
245 | struct file_stack *input_file_stack; | |
246 | ||
247 | /* Incremented on each change to input_file_stack. */ | |
248 | int input_file_stack_tick; | |
249 | ||
250 | /* FUNCTION_DECL for function now being parsed or compiled. */ | |
251 | ||
252 | extern tree current_function_decl; | |
253 | ||
254 | /* Name to use as base of names for dump output files. */ | |
255 | ||
87e11268 | 256 | const char *dump_base_name; |
4291d9c8 RS |
257 | |
258 | /* Bit flags that specify the machine subtype we are compiling for. | |
259 | Bits are tested using macros TARGET_... defined in the tm.h file | |
260 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
261 | ||
262 | extern int target_flags; | |
263 | ||
264 | /* Flags saying which kinds of debugging dump have been requested. */ | |
265 | ||
266 | int rtl_dump = 0; | |
267 | int rtl_dump_and_exit = 0; | |
268 | int jump_opt_dump = 0; | |
e9a25f70 | 269 | int addressof_dump = 0; |
4291d9c8 | 270 | int cse_dump = 0; |
7506f491 | 271 | int gcse_dump = 0; |
4291d9c8 RS |
272 | int loop_dump = 0; |
273 | int cse2_dump = 0; | |
0d332add | 274 | int branch_prob_dump = 0; |
4291d9c8 RS |
275 | int flow_dump = 0; |
276 | int combine_dump = 0; | |
8c660648 | 277 | int regmove_dump = 0; |
4291d9c8 RS |
278 | int sched_dump = 0; |
279 | int local_reg_dump = 0; | |
280 | int global_reg_dump = 0; | |
281 | int sched2_dump = 0; | |
282 | int jump2_opt_dump = 0; | |
bd334356 | 283 | #ifdef DELAY_SLOTS |
4291d9c8 | 284 | int dbr_sched_dump = 0; |
bd334356 | 285 | #endif |
4291d9c8 | 286 | int flag_print_asm_name = 0; |
032713aa | 287 | #ifdef STACK_REGS |
4291d9c8 | 288 | int stack_reg_dump = 0; |
032713aa NC |
289 | #endif |
290 | #ifdef MACHINE_DEPENDENT_REORG | |
291 | int mach_dep_reorg_dump = 0; | |
292 | #endif | |
735a0e33 | 293 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
294 | |
295 | /* Name for output file of assembly code, specified with -o. */ | |
296 | ||
297 | char *asm_file_name; | |
298 | ||
299 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
300 | int g_switch_value; | |
301 | int g_switch_set; | |
302 | ||
303 | /* Type(s) of debugging information we are producing (if any). | |
304 | See flags.h for the definitions of the different possible | |
305 | types of debugging information. */ | |
306 | enum debug_info_type write_symbols = NO_DEBUG; | |
307 | ||
308 | /* Level of debugging information we are producing. See flags.h | |
309 | for the definitions of the different possible levels. */ | |
310 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
311 | ||
a53d0bcc RS |
312 | /* Nonzero means use GNU-only extensions in the generated symbolic |
313 | debugging information. */ | |
314 | /* Currently, this only has an effect when write_symbols is set to | |
315 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
316 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
317 | |
318 | /* Nonzero means do optimizations. -O. | |
319 | Particular numeric values stand for particular amounts of optimization; | |
320 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
321 | ones are not controlled directly by this variable. Instead, they are | |
322 | controlled by individual `flag_...' variables that are defaulted | |
323 | based on this variable. */ | |
324 | ||
325 | int optimize = 0; | |
326 | ||
c6aded7c AG |
327 | /* Nonzero means optimize for size. -Os. |
328 | The only valid values are zero and non-zero. When optimize_size is | |
329 | non-zero, optimize defaults to 2, but certain individual code | |
330 | bloating optimizations are disabled. */ | |
331 | ||
332 | int optimize_size = 0; | |
333 | ||
4291d9c8 RS |
334 | /* Number of error messages and warning messages so far. */ |
335 | ||
336 | int errorcount = 0; | |
337 | int warningcount = 0; | |
338 | int sorrycount = 0; | |
339 | ||
a1d7ffe3 JM |
340 | /* Pointer to function to compute the name to use to print a declaration. |
341 | DECL is the declaration in question. | |
342 | VERBOSITY determines what information will be printed: | |
343 | 0: DECL_NAME, demangled as necessary. | |
344 | 1: and scope information. | |
345 | 2: and any other information that might be interesting, such as function | |
346 | parameter types in C++. */ | |
4291d9c8 | 347 | |
114791ea | 348 | char *(*decl_printable_name) PROTO ((tree, int)); |
4291d9c8 RS |
349 | |
350 | /* Pointer to function to compute rtl for a language-specific tree code. */ | |
351 | ||
114791ea KG |
352 | typedef rtx (*lang_expand_expr_t) |
353 | PROTO ((union tree_node *, rtx, enum machine_mode, | |
354 | enum expand_modifier modifier)); | |
355 | ||
356 | lang_expand_expr_t lang_expand_expr = 0; | |
4291d9c8 | 357 | |
2b599527 RS |
358 | /* Pointer to function to finish handling an incomplete decl at the |
359 | end of compilation. */ | |
360 | ||
114791ea | 361 | void (*incomplete_decl_finalize_hook) PROTO((tree)) = 0; |
2b599527 | 362 | |
4291d9c8 RS |
363 | /* Nonzero if generating code to do profiling. */ |
364 | ||
365 | int profile_flag = 0; | |
366 | ||
367 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ | |
368 | ||
369 | int profile_block_flag; | |
370 | ||
0d332add DE |
371 | /* Nonzero if generating code to profile program flow graph arcs. */ |
372 | ||
373 | int profile_arc_flag = 0; | |
374 | ||
375 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
376 | ||
377 | int flag_test_coverage = 0; | |
378 | ||
379 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
380 | ||
381 | int flag_branch_probabilities = 0; | |
382 | ||
4291d9c8 RS |
383 | /* Nonzero for -pedantic switch: warn about anything |
384 | that standard spec forbids. */ | |
385 | ||
386 | int pedantic = 0; | |
387 | ||
388 | /* Temporarily suppress certain warnings. | |
389 | This is set while reading code from a system header file. */ | |
390 | ||
391 | int in_system_header = 0; | |
392 | ||
393 | /* Nonzero means do stupid register allocation. | |
394 | Currently, this is 1 if `optimize' is 0. */ | |
395 | ||
396 | int obey_regdecls = 0; | |
397 | ||
398 | /* Don't print functions as they are compiled and don't print | |
399 | times taken by the various passes. -quiet. */ | |
400 | ||
401 | int quiet_flag = 0; | |
402 | \f | |
403 | /* -f flags. */ | |
404 | ||
405 | /* Nonzero means `char' should be signed. */ | |
406 | ||
407 | int flag_signed_char; | |
408 | ||
409 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
410 | ||
411 | int flag_short_enums; | |
412 | ||
413 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
414 | be saved across function calls, if that produces overall better code. | |
415 | Optional now, so people can test it. */ | |
416 | ||
417 | #ifdef DEFAULT_CALLER_SAVES | |
418 | int flag_caller_saves = 1; | |
419 | #else | |
420 | int flag_caller_saves = 0; | |
421 | #endif | |
422 | ||
958ec8ca JW |
423 | /* Nonzero if structures and unions should be returned in memory. |
424 | ||
425 | This should only be defined if compatibility with another compiler or | |
426 | with an ABI is needed, because it results in slower code. */ | |
427 | ||
428 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
429 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
430 | #endif | |
431 | ||
4291d9c8 RS |
432 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
433 | ||
958ec8ca | 434 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
435 | |
436 | /* Nonzero for -fforce-mem: load memory value into a register | |
437 | before arithmetic on it. This makes better cse but slower compilation. */ | |
438 | ||
439 | int flag_force_mem = 0; | |
440 | ||
441 | /* Nonzero for -fforce-addr: load memory address into a register before | |
442 | reference to memory. This makes better cse but slower compilation. */ | |
443 | ||
444 | int flag_force_addr = 0; | |
445 | ||
446 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
447 | instead save them up to pop many calls' args with one insns. */ | |
448 | ||
6731a3e3 | 449 | int flag_defer_pop = 0; |
4291d9c8 RS |
450 | |
451 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
452 | in extended-precision registers. */ | |
453 | ||
454 | int flag_float_store = 0; | |
455 | ||
456 | /* Nonzero for -fcse-follow-jumps: | |
457 | have cse follow jumps to do a more extensive job. */ | |
458 | ||
459 | int flag_cse_follow_jumps; | |
460 | ||
8b3686ed RK |
461 | /* Nonzero for -fcse-skip-blocks: |
462 | have cse follow a branch around a block. */ | |
463 | int flag_cse_skip_blocks; | |
464 | ||
4291d9c8 RS |
465 | /* Nonzero for -fexpensive-optimizations: |
466 | perform miscellaneous relatively-expensive optimizations. */ | |
467 | int flag_expensive_optimizations; | |
468 | ||
469 | /* Nonzero for -fthread-jumps: | |
470 | have jump optimize output of loop. */ | |
471 | ||
472 | int flag_thread_jumps; | |
473 | ||
474 | /* Nonzero enables strength-reduction in loop.c. */ | |
475 | ||
476 | int flag_strength_reduce = 0; | |
477 | ||
478 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
479 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
480 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
481 | unrolled. */ | |
482 | ||
483 | int flag_unroll_loops; | |
484 | ||
485 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
486 | This is generally not a win. */ | |
487 | ||
488 | int flag_unroll_all_loops; | |
489 | ||
e5eb27e5 JL |
490 | /* Nonzero forces all invariant computations in loops to be moved |
491 | outside the loop. */ | |
492 | ||
493 | int flag_move_all_movables = 0; | |
494 | ||
495 | /* Nonzero forces all general induction variables in loops to be | |
496 | strength reduced. */ | |
497 | ||
498 | int flag_reduce_all_givs = 0; | |
499 | ||
9ec36da5 JL |
500 | /* Nonzero to perform full register move optimization passes. This is the |
501 | default for -O2. */ | |
502 | ||
503 | int flag_regmove = 0; | |
504 | ||
4291d9c8 RS |
505 | /* Nonzero for -fwritable-strings: |
506 | store string constants in data segment and don't uniquize them. */ | |
507 | ||
508 | int flag_writable_strings = 0; | |
509 | ||
510 | /* Nonzero means don't put addresses of constant functions in registers. | |
511 | Used for compiling the Unix kernel, where strange substitutions are | |
512 | done on the assembly output. */ | |
513 | ||
514 | int flag_no_function_cse = 0; | |
515 | ||
516 | /* Nonzero for -fomit-frame-pointer: | |
517 | don't make a frame pointer in simple functions that don't require one. */ | |
518 | ||
519 | int flag_omit_frame_pointer = 0; | |
520 | ||
cf440348 JL |
521 | /* Nonzero means place each function into its own section on those platforms |
522 | which support arbitrary section names and unlimited numbers of sections. */ | |
523 | ||
524 | int flag_function_sections = 0; | |
525 | ||
fd868572 CM |
526 | /* ... and similar for data. */ |
527 | ||
528 | int flag_data_sections = 0; | |
529 | ||
4291d9c8 RS |
530 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
531 | ||
532 | int flag_no_peephole = 0; | |
533 | ||
43855b28 JL |
534 | /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math |
535 | operations in the interest of optimization. For example it allows | |
536 | GCC to assume arguments to sqrt are nonnegative numbers, allowing | |
0f41302f | 537 | faster code for sqrt to be generated. */ |
43855b28 JL |
538 | |
539 | int flag_fast_math = 0; | |
540 | ||
4291d9c8 RS |
541 | /* Nonzero means all references through pointers are volatile. */ |
542 | ||
543 | int flag_volatile; | |
c6e75897 RS |
544 | |
545 | /* Nonzero means treat all global and extern variables as global. */ | |
546 | ||
38d4d0c2 | 547 | int flag_volatile_global; |
4291d9c8 RS |
548 | |
549 | /* Nonzero means just do syntax checking; don't output anything. */ | |
550 | ||
551 | int flag_syntax_only = 0; | |
552 | ||
7506f491 DE |
553 | /* Nonzero means perform global cse. */ |
554 | ||
555 | static int flag_gcse; | |
556 | ||
4291d9c8 RS |
557 | /* Nonzero means to rerun cse after loop optimization. This increases |
558 | compilation time about 20% and picks up a few more common expressions. */ | |
559 | ||
560 | static int flag_rerun_cse_after_loop; | |
561 | ||
6d6d0fa0 JL |
562 | /* Nonzero means to run loop optimizations twice. */ |
563 | ||
64fde701 | 564 | int flag_rerun_loop_opt; |
6d6d0fa0 | 565 | |
4291d9c8 RS |
566 | /* Nonzero for -finline-functions: ok to inline functions that look like |
567 | good inline candidates. */ | |
568 | ||
569 | int flag_inline_functions; | |
570 | ||
571 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 572 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
573 | purposes. */ |
574 | ||
575 | int flag_keep_inline_functions; | |
576 | ||
fadb3bc9 | 577 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 RS |
578 | |
579 | int flag_no_inline; | |
580 | ||
fbe912dd BK |
581 | /* Nonzero means that we should emit static const variables |
582 | regardless of whether or not optimization is turned on. */ | |
583 | ||
584 | int flag_keep_static_consts = 1; | |
585 | ||
4291d9c8 RS |
586 | /* Nonzero means we should be saving declaration info into a .X file. */ |
587 | ||
588 | int flag_gen_aux_info = 0; | |
589 | ||
f246a305 RS |
590 | /* Specified name of aux-info file. */ |
591 | ||
592 | static char *aux_info_file_name; | |
593 | ||
4291d9c8 RS |
594 | /* Nonzero means make the text shared if supported. */ |
595 | ||
596 | int flag_shared_data; | |
597 | ||
598 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
599 | ||
600 | int flag_delayed_branch; | |
601 | ||
602 | /* Nonzero if we are compiling pure (sharable) code. | |
603 | Value is 1 if we are doing reasonable (i.e. simple | |
604 | offset into offset table) pic. Value is 2 if we can | |
605 | only perform register offsets. */ | |
606 | ||
607 | int flag_pic; | |
608 | ||
3d195391 MS |
609 | /* Nonzero means generate extra code for exception handling and enable |
610 | exception handling. */ | |
611 | ||
b53beeb2 | 612 | int flag_exceptions; |
3d195391 | 613 | |
a1622f83 AM |
614 | /* Nonzero means use the new model for exception handling. Replaces |
615 | -DNEW_EH_MODEL as a compile option. */ | |
616 | ||
5dd57225 | 617 | int flag_new_exceptions = 0; |
a1622f83 | 618 | |
2786cbad | 619 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 620 | by default. */ |
4291d9c8 RS |
621 | |
622 | int flag_no_common; | |
623 | ||
624 | /* Nonzero means pretend it is OK to examine bits of target floats, | |
625 | even if that isn't true. The resulting code will have incorrect constants, | |
626 | but the same series of instructions that the native compiler would make. */ | |
627 | ||
628 | int flag_pretend_float; | |
629 | ||
630 | /* Nonzero means change certain warnings into errors. | |
631 | Usually these are warnings about failure to conform to some standard. */ | |
632 | ||
633 | int flag_pedantic_errors = 0; | |
634 | ||
635 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
636 | local_alloc). | |
637 | flag_schedule_insns_after_reload means schedule insns after | |
638 | global_alloc. */ | |
639 | ||
640 | int flag_schedule_insns = 0; | |
641 | int flag_schedule_insns_after_reload = 0; | |
642 | ||
8c660648 JL |
643 | #ifdef HAIFA |
644 | /* The following flags have effect only for scheduling before register | |
645 | allocation: | |
646 | ||
647 | flag_schedule_interblock means schedule insns accross basic blocks. | |
648 | flag_schedule_speculative means allow speculative motion of non-load insns. | |
649 | flag_schedule_speculative_load means allow speculative motion of some | |
650 | load insns. | |
651 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 652 | load insns. */ |
8c660648 JL |
653 | |
654 | int flag_schedule_interblock = 1; | |
655 | int flag_schedule_speculative = 1; | |
656 | int flag_schedule_speculative_load = 0; | |
657 | int flag_schedule_speculative_load_dangerous = 0; | |
f1da1729 | 658 | #endif /* HAIFA */ |
8c660648 JL |
659 | |
660 | /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple | |
661 | by a cheaper branch, on a count register. */ | |
662 | int flag_branch_on_count_reg; | |
8c660648 | 663 | |
4291d9c8 RS |
664 | /* -finhibit-size-directive inhibits output of .size for ELF. |
665 | This is used only for compiling crtstuff.c, | |
666 | and it may be extended to other effects | |
667 | needed for crtstuff.c on other systems. */ | |
668 | int flag_inhibit_size_directive = 0; | |
669 | ||
9a631e8e RS |
670 | /* -fverbose-asm causes extra commentary information to be produced in |
671 | the generated assembly code (to make it more readable). This option | |
672 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 673 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 674 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
675 | to be omitted and is useful when comparing two assembler files. */ |
676 | ||
c85f7c16 | 677 | int flag_verbose_asm = 0; |
9a631e8e | 678 | |
3d5cdd42 DE |
679 | /* -dA causes debug commentary information to be produced in |
680 | the generated assembly code (to make it more readable). This option | |
681 | is generally only of use to those who actually need to read the | |
682 | generated assembly code (perhaps while debugging the compiler itself). | |
683 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
684 | to be a catchall for printing debug information in the assembler file. */ | |
685 | ||
686 | int flag_debug_asm = 0; | |
9a631e8e | 687 | |
4291d9c8 | 688 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
689 | (Or, more generally, a linker that handles initializations.) |
690 | -fno-gnu-linker says that collect2 will be used. */ | |
691 | #ifdef USE_COLLECT2 | |
692 | int flag_gnu_linker = 0; | |
693 | #else | |
4291d9c8 | 694 | int flag_gnu_linker = 1; |
d68c507d | 695 | #endif |
4291d9c8 | 696 | |
566cdc73 MM |
697 | /* Tag all structures with __attribute__(packed) */ |
698 | int flag_pack_struct = 0; | |
699 | ||
bd83d0ac RK |
700 | /* Emit code to check for stack overflow; also may cause large objects |
701 | to be allocated dynamically. */ | |
702 | int flag_stack_check; | |
703 | ||
f602c208 RK |
704 | /* -fcheck-memory-usage causes extra code to be generated in order to check |
705 | memory accesses. This is used by a detector of bad memory accesses such | |
706 | as Checker. */ | |
707 | int flag_check_memory_usage = 0; | |
708 | ||
709 | /* -fprefix-function-name causes function name to be prefixed. This | |
710 | can be used with -fcheck-memory-usage to isolate code compiled with | |
711 | -fcheck-memory-usage. */ | |
712 | int flag_prefix_function_name = 0; | |
713 | ||
9ae8ffe7 JL |
714 | /* 0 if pointer arguments may alias each other. True in C. |
715 | 1 if pointer arguments may not alias each other but may alias | |
716 | global variables. | |
717 | 2 if pointer arguments may not alias each other and may not | |
718 | alias global variables. True in Fortran. | |
719 | This defaults to 0 for C. */ | |
720 | int flag_argument_noalias = 0; | |
721 | ||
41472af8 MM |
722 | /* Nonzero if we should do (language-dependent) alias analysis. |
723 | Typically, this analysis will assume that expressions of certain | |
724 | types do not alias expressions of certain other types. Only used | |
725 | if alias analysis (in general) is enabled. */ | |
726 | int flag_strict_aliasing = 0; | |
727 | ||
07417085 KR |
728 | /* Instrument functions with calls at entry and exit, for profiling. */ |
729 | int flag_instrument_function_entry_exit = 0; | |
730 | ||
b8468bc7 NC |
731 | |
732 | /* Table of supported debugging formats. */ | |
733 | static struct | |
734 | { | |
87e11268 | 735 | const char * arg; |
b8468bc7 NC |
736 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
737 | constant expression, we use NO_DEBUG in its place. */ | |
738 | enum debug_info_type debug_type; | |
739 | int use_extensions_p; | |
87e11268 | 740 | const char * description; |
b8468bc7 NC |
741 | } *da, |
742 | debug_args[] = | |
743 | { | |
744 | { "g", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, | |
745 | "Generate default debug format output" }, | |
746 | { "ggdb", NO_DEBUG, 1, "Generate default extended debug format output" }, | |
747 | #ifdef DBX_DEBUGGING_INFO | |
748 | { "gstabs", DBX_DEBUG, 0, "Generate STABS format debug output" }, | |
749 | { "gstabs+", DBX_DEBUG, 1, "Generate extended STABS format debug output" }, | |
750 | #endif | |
751 | #ifdef DWARF_DEBUGGING_INFO | |
752 | { "gdwarf", DWARF_DEBUG, 0, "Generate DWARF-1 format debug output"}, | |
753 | { "gdwarf+", DWARF_DEBUG, 1, | |
754 | "Generated extended DWARF-1 format debug output" }, | |
755 | #endif | |
756 | #ifdef DWARF2_DEBUGGING_INFO | |
757 | { "gdwarf-2", DWARF2_DEBUG, 0, "Enable DWARF-2 debug output" }, | |
758 | #endif | |
759 | #ifdef XCOFF_DEBUGGING_INFO | |
760 | { "gxcoff", XCOFF_DEBUG, 0, "Generate XCOFF format debug output" }, | |
761 | { "gxcoff+", XCOFF_DEBUG, 1, "Generate extended XCOFF format debug output" }, | |
762 | #endif | |
763 | #ifdef SDB_DEBUGGING_INFO | |
764 | { "gcoff", SDB_DEBUG, 0, "Generate COFF format debug output" }, | |
765 | #endif | |
c84e2712 | 766 | { 0, 0, 0, 0 } |
b8468bc7 NC |
767 | }; |
768 | ||
769 | typedef struct | |
770 | { | |
87e11268 | 771 | const char * string; |
b8468bc7 NC |
772 | int * variable; |
773 | int on_value; | |
87e11268 | 774 | const char * description; |
b8468bc7 NC |
775 | } |
776 | lang_independent_options; | |
777 | ||
19283265 RH |
778 | /* Add or remove a leading underscore from user symbols. */ |
779 | int flag_leading_underscore = -1; | |
780 | ||
781 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 782 | const char *user_label_prefix; |
19283265 RH |
783 | |
784 | /* A default for same. */ | |
785 | #ifndef USER_LABEL_PREFIX | |
786 | #define USER_LABEL_PREFIX "" | |
787 | #endif | |
788 | ||
4291d9c8 RS |
789 | /* Table of language-independent -f options. |
790 | STRING is the option name. VARIABLE is the address of the variable. | |
791 | ON_VALUE is the value to store in VARIABLE | |
792 | if `-fSTRING' is seen as an option. | |
793 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
794 | ||
b8468bc7 | 795 | lang_independent_options f_options[] = |
4291d9c8 | 796 | { |
b8468bc7 NC |
797 | {"float-store", &flag_float_store, 1, |
798 | "Do not store floats in registers" }, | |
799 | {"volatile", &flag_volatile, 1, | |
800 | "Consider all mem refs through pointers as volatile"}, | |
801 | {"volatile-global", &flag_volatile_global, 1, | |
802 | "Consider all mem refs to global data to be volatile" }, | |
803 | {"defer-pop", &flag_defer_pop, 1, | |
804 | "Defer popping functions args from stack until later" }, | |
805 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, | |
806 | "When possible do not generate stack frames"}, | |
807 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, | |
808 | "When running CSE, follow jumps to their targets" }, | |
809 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, | |
810 | "When running CSE, follow conditional jumps" }, | |
811 | {"expensive-optimizations", &flag_expensive_optimizations, 1, | |
812 | "Perform a number of minor, expensive optimisations" }, | |
813 | {"thread-jumps", &flag_thread_jumps, 1, | |
814 | "Perform jump threading optimisations"}, | |
815 | {"strength-reduce", &flag_strength_reduce, 1, | |
816 | "Perform strength reduction optimisations" }, | |
817 | {"unroll-loops", &flag_unroll_loops, 1, | |
62e7b719 | 818 | "Perform loop unrolling when iteration count is known" }, |
b8468bc7 | 819 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
f1da1729 | 820 | "Perform loop unrolling for all loops" }, |
b8468bc7 NC |
821 | {"move-all-movables", &flag_move_all_movables, 1, |
822 | "Force all loop invariant computations out of loops" }, | |
823 | {"reduce-all-givs", &flag_reduce_all_givs, 1, | |
824 | "Strength reduce all loop general induction variables" }, | |
825 | {"writable-strings", &flag_writable_strings, 1, | |
826 | "Store strings in writable data section" }, | |
827 | {"peephole", &flag_no_peephole, 0, | |
828 | "Enable machine specific peephole optimisations" }, | |
829 | {"force-mem", &flag_force_mem, 1, | |
830 | "Copy memory operands into registers before using" }, | |
831 | {"force-addr", &flag_force_addr, 1, | |
832 | "Copy memory address constants into regs before using" }, | |
833 | {"function-cse", &flag_no_function_cse, 0, | |
834 | "Allow function addresses to be held in registers" }, | |
835 | {"inline-functions", &flag_inline_functions, 1, | |
836 | "Integrate simple functions into their callers" }, | |
837 | {"keep-inline-functions", &flag_keep_inline_functions, 1, | |
838 | "Generate code for funcs even if they are fully inlined" }, | |
839 | {"inline", &flag_no_inline, 0, | |
840 | "Pay attention to the 'inline' keyword"}, | |
841 | {"keep-static-consts", &flag_keep_static_consts, 1, | |
842 | "Emit static const variables even if they are not used" }, | |
843 | {"syntax-only", &flag_syntax_only, 1, | |
844 | "Check for syntax errors, then stop" }, | |
845 | {"shared-data", &flag_shared_data, 1, | |
846 | "Mark data as shared rather than private" }, | |
847 | {"caller-saves", &flag_caller_saves, 1, | |
848 | "Enable saving registers around function calls" }, | |
849 | {"pcc-struct-return", &flag_pcc_struct_return, 1, | |
850 | "Return 'short' aggregates in memory, not registers" }, | |
851 | {"reg-struct-return", &flag_pcc_struct_return, 0, | |
852 | "Return 'short' aggregates in registers" }, | |
853 | {"delayed-branch", &flag_delayed_branch, 1, | |
854 | "Attempt to fill delay slots of branch instructions" }, | |
855 | {"gcse", &flag_gcse, 1, | |
856 | "Perform the global common subexpression elimination" }, | |
857 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, | |
858 | "Run CSE pass after loop optimisations"}, | |
859 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, | |
860 | "Run the loop optimiser twice"}, | |
861 | {"pretend-float", &flag_pretend_float, 1, | |
862 | "Pretend that host and target use the same FP format"}, | |
863 | {"schedule-insns", &flag_schedule_insns, 1, | |
864 | "Reschedule instructions to avoid pipeline stalls"}, | |
865 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, | |
866 | "Run two passes of the instruction scheduler"}, | |
8c660648 | 867 | #ifdef HAIFA |
b8468bc7 NC |
868 | {"sched-interblock",&flag_schedule_interblock, 1, |
869 | "Enable scheduling across basic blocks" }, | |
870 | {"sched-spec",&flag_schedule_speculative, 1, | |
871 | "Allow speculative motion of non-loads" }, | |
872 | {"sched-spec-load",&flag_schedule_speculative_load, 1, | |
873 | "Allow speculative motion of some loads" }, | |
874 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, | |
875 | "Allow speculative motion of more loads" }, | |
f1da1729 | 876 | #endif /* HAIFA */ |
b8468bc7 | 877 | {"branch-count-reg",&flag_branch_on_count_reg, 1, |
40f943dd | 878 | "Replace add,compare,branch with branch on count reg"}, |
b8468bc7 NC |
879 | {"pic", &flag_pic, 1, |
880 | "Generate position independent code, if possible"}, | |
881 | {"PIC", &flag_pic, 2, ""}, | |
882 | {"exceptions", &flag_exceptions, 1, | |
883 | "Enable exception handling" }, | |
884 | {"new-exceptions", &flag_new_exceptions, 1, | |
885 | "Use the new model for exception handling" }, | |
886 | {"sjlj-exceptions", &exceptions_via_longjmp, 1, | |
887 | "Use setjmp/longjmp to handle exceptions" }, | |
888 | {"asynchronous-exceptions", &asynchronous_exceptions, 1, | |
889 | "Support asynchronous exceptions" }, | |
890 | {"profile-arcs", &profile_arc_flag, 1, | |
891 | "Insert arc based program profiling code" }, | |
892 | {"test-coverage", &flag_test_coverage, 1, | |
893 | "Create data files needed by gcov" }, | |
894 | {"branch-probabilities", &flag_branch_probabilities, 1, | |
62e7b719 | 895 | "Use profiling information for branch probabilities" }, |
b8468bc7 NC |
896 | {"fast-math", &flag_fast_math, 1, |
897 | "Improve FP speed by violating ANSI & IEEE rules" }, | |
898 | {"common", &flag_no_common, 0, | |
899 | "Do not put unitialised globals in the common section" }, | |
900 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, | |
901 | "Do not generate .size directives" }, | |
902 | {"function-sections", &flag_function_sections, 1, | |
903 | "place each function into its own section" }, | |
257441db CM |
904 | {"data-sections", &flag_data_sections, 1, |
905 | "place data items into their own section" }, | |
b8468bc7 NC |
906 | {"verbose-asm", &flag_verbose_asm, 1, |
907 | "Add extra commentry to assembler output"}, | |
908 | {"gnu-linker", &flag_gnu_linker, 1, | |
909 | "Output GNU ld formatted global initialisers"}, | |
910 | {"regmove", &flag_regmove, 1, | |
c84e2712 KG |
911 | "Enables a register move optimisation"}, |
912 | {"optimize-register-move", &flag_regmove, 1, | |
913 | "Do the full regmove optimization pass"}, | |
b8468bc7 NC |
914 | {"pack-struct", &flag_pack_struct, 1, |
915 | "Pack structure members together without holes" }, | |
916 | {"stack-check", &flag_stack_check, 1, | |
917 | "Insert stack checking code into the program" }, | |
918 | {"argument-alias", &flag_argument_noalias, 0, | |
919 | "Specify that arguments may alias each other & globals"}, | |
920 | {"argument-noalias", &flag_argument_noalias, 1, | |
921 | "Assume arguments may alias globals but not each other"}, | |
922 | {"argument-noalias-global", &flag_argument_noalias, 2, | |
923 | "Assume arguments do not alias each other or globals" }, | |
924 | {"strict-aliasing", &flag_strict_aliasing, 1, | |
925 | "Assume strict aliasing rules apply" }, | |
926 | {"check-memory-usage", &flag_check_memory_usage, 1, | |
927 | "Generate code to check every memory access" }, | |
928 | {"prefix-function-name", &flag_prefix_function_name, 1, | |
929 | "Add a prefix to all function names" }, | |
c84e2712 KG |
930 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
931 | "Suppress output of instruction numbers and line number notes in debugging dumps"}, | |
07417085 KR |
932 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
933 | "Instrument function entry/exit with profiling calls"}, | |
19283265 RH |
934 | {"leading-underscore", &flag_leading_underscore, 1, |
935 | "External symbols have a leading underscore" } | |
4291d9c8 | 936 | }; |
b99933c7 | 937 | |
b8468bc7 NC |
938 | #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0])) |
939 | ||
b99933c7 RS |
940 | /* Table of language-specific options. */ |
941 | ||
b8468bc7 NC |
942 | static struct lang_opt |
943 | { | |
87e11268 KG |
944 | const char * option; |
945 | const char * description; | |
b8468bc7 NC |
946 | } |
947 | documented_lang_options[] = | |
b99933c7 | 948 | { |
b8468bc7 NC |
949 | /* In order not to overload the --help output, the convention |
950 | used here is to only describe those options which are not | |
951 | enabled by default. */ | |
952 | ||
953 | { "-ansi", "Compile just for ANSI C" }, | |
954 | { "-fallow-single-precision", | |
955 | "Do not promote floats to double if using -traditional" }, | |
6f4d7222 | 956 | { "-std= ", "Determine language standard"}, |
b8468bc7 NC |
957 | |
958 | { "-fsigned-bitfields", "" }, | |
959 | { "-funsigned-bitfields","Make bitfields by unsigned by default" }, | |
960 | { "-fno-signed-bitfields", "" }, | |
961 | { "-fno-unsigned-bitfields","" }, | |
962 | { "-fsigned-char", "Make 'char' be signed by default"}, | |
963 | { "-funsigned-char", "Make 'char' be unsigned by default"}, | |
964 | { "-fno-signed-char", "" }, | |
965 | { "-fno-unsigned-char", "" }, | |
966 | ||
967 | { "-ftraditional", "" }, | |
968 | { "-traditional", "Attempt to support traditional K&R style C"}, | |
969 | { "-fnotraditional", "" }, | |
970 | { "-fno-traditional", "" }, | |
971 | ||
972 | { "-fasm", "" }, | |
973 | { "-fno-asm", "Do not recognise the 'asm' keyword" }, | |
974 | { "-fbuiltin", "" }, | |
975 | { "-fno-builtin", "Do not recognise any built in functions" }, | |
976 | { "-fhosted", "Assume normal C execution environment" }, | |
977 | { "-fno-hosted", "" }, | |
978 | { "-ffreestanding", | |
979 | "Assume that standard libraries & main might not exist" }, | |
980 | { "-fno-freestanding", "" }, | |
981 | { "-fcond-mismatch", "Allow different types as args of ? operator"}, | |
982 | { "-fno-cond-mismatch", "" }, | |
62e7b719 | 983 | { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" }, |
b8468bc7 NC |
984 | { "-fno-dollars-in-identifiers", "" }, |
985 | { "-fident", "" }, | |
986 | { "-fno-ident", "Ignore #ident directives" }, | |
987 | { "-fshort-double", "Use the same size for double as for float" }, | |
988 | { "-fno-short-double", "" }, | |
989 | { "-fshort-enums", "Use the smallest fitting integer to hold enums"}, | |
990 | { "-fno-short-enums", "" }, | |
991 | ||
992 | { "-Wall", "Enable most warning messages" }, | |
993 | { "-Wbad-function-cast", | |
994 | "Warn about casting functions to incompatible types" }, | |
995 | { "-Wno-bad-function-cast", "" }, | |
0ca3fb0a KG |
996 | { "-Wmissing-noreturn", |
997 | "Warn about functions which might be candidates for attribute noreturn" }, | |
998 | { "-Wno-missing-noreturn", "" }, | |
b8468bc7 NC |
999 | { "-Wcast-qual", "Warn about casts which discard qualifiers"}, |
1000 | { "-Wno-cast-qual", "" }, | |
630962bf | 1001 | { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"}, |
b8468bc7 NC |
1002 | { "-Wno-char-subscripts", "" }, |
1003 | { "-Wcomment", "Warn if nested comments are detected" }, | |
c84e2712 KG |
1004 | { "-Wno-comment", "" }, |
1005 | { "-Wcomments", "Warn if nested comments are detected" }, | |
1006 | { "-Wno-comments", "" }, | |
b8468bc7 NC |
1007 | { "-Wconversion", "Warn about possibly confusing type conversions" }, |
1008 | { "-Wno-conversion", "" }, | |
1009 | { "-Wformat", "Warn about printf format anomalies" }, | |
1010 | { "-Wno-format", "" }, | |
1011 | { "-Wimplicit-function-declaration", | |
1012 | "Warn about implicit function declarations" }, | |
1013 | { "-Wno-implicit-function-declaration", "" }, | |
1014 | { "-Werror-implicit-function-declaration", "" }, | |
1015 | { "-Wimplicit-int", "Warn when a declaration does not specify a type" }, | |
1016 | { "-Wno-implicit-int", "" }, | |
1017 | { "-Wimplicit", "" }, | |
1018 | { "-Wno-implicit", "" }, | |
1019 | { "-Wimport", "Warn about the use of the #import directive" }, | |
1020 | { "-Wno-import", "" }, | |
1021 | { "-Wlong-long","" }, | |
1022 | { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" }, | |
1023 | { "-Wmain", "Warn about suspicious declarations of main" }, | |
1024 | { "-Wno-main", "" }, | |
1025 | { "-Wmissing-braces", | |
1026 | "Warn about possibly missing braces around initialisers" }, | |
1027 | { "-Wno-missing-braces", "" }, | |
1028 | { "-Wmissing-declarations", | |
1029 | "Warn about global funcs without previous declarations"}, | |
1030 | { "-Wno-missing-declarations", "" }, | |
1031 | { "-Wmissing-prototypes", "Warn about global funcs without prototypes" }, | |
1032 | { "-Wno-missing-prototypes", "" }, | |
1033 | { "-Wmultichar", "Warn about use of multicharacter literals"}, | |
1034 | { "-Wno-multichar", "" }, | |
1035 | { "-Wnested-externs", "Warn about externs not at file scope level" }, | |
1036 | { "-Wno-nested-externs", "" }, | |
1037 | { "-Wparentheses", "Warn about possible missing parentheses" }, | |
1038 | { "-Wno-parentheses", "" }, | |
1039 | { "-Wpointer-arith", "Warn about function pointer arithmetic" }, | |
1040 | { "-Wno-pointer-arith", "" }, | |
1041 | { "-Wredundant-decls", | |
1042 | "Warn about multiple declarations of the same object" }, | |
1043 | { "-Wno-redundant-decls", "" }, | |
1044 | { "-Wsign-compare", "Warn about signed/unsigned comparisons" }, | |
1045 | { "-Wno-sign-compare", "" }, | |
1046 | { "-Wunknown-pragmas", "Warn about unrecognised pragmas" }, | |
1047 | { "-Wno-unknown-pragmas", "" }, | |
1048 | { "-Wstrict-prototypes", "Warn about non-prototyped function decls" }, | |
1049 | { "-Wno-strict-prototypes", "" }, | |
630962bf | 1050 | { "-Wtraditional", "Warn about constructs whose meaning change in ANSI C"}, |
b8468bc7 NC |
1051 | { "-Wno-traditional", "" }, |
1052 | { "-Wtrigraphs", "Warn when trigraphs are encountered" }, | |
1053 | { "-Wno-trigraphs", "" }, | |
1054 | { "-Wundef", "" }, | |
1055 | { "-Wno-undef", "" }, | |
1056 | { "-Wwrite-strings", "Mark strings as 'const char *'"}, | |
1057 | { "-Wno-write-strings", "" }, | |
a457294f | 1058 | |
a0d85b75 | 1059 | /* These are for languages with USE_CPPLIB. */ |
b8468bc7 | 1060 | /* These options are already documented in cpplib.c */ |
40f943dd | 1061 | { "--help", "" }, |
b8468bc7 NC |
1062 | { "-A", "" }, |
1063 | { "-D", "" }, | |
1064 | { "-I", "" }, | |
1065 | { "-U", "" }, | |
add7091b | 1066 | { "-H", "" }, |
b8468bc7 | 1067 | { "-idirafter", "" }, |
6fa72945 ZW |
1068 | { "-imacros", "" }, |
1069 | { "-include", "" }, | |
b8468bc7 NC |
1070 | { "-iprefix", "" }, |
1071 | { "-isystem", "" }, | |
6fa72945 ZW |
1072 | { "-iwithprefix", "" }, |
1073 | { "-iwithprefixbefore", "" }, | |
b8468bc7 NC |
1074 | { "-lang-c", "" }, |
1075 | { "-lang-c89", "" }, | |
1076 | { "-lang-c++", "" }, | |
6fa72945 | 1077 | { "-remap", "" }, |
b8468bc7 NC |
1078 | { "-nostdinc", "" }, |
1079 | { "-nostdinc++", "" }, | |
1080 | { "-trigraphs", "" }, | |
1081 | { "-undef", "" }, | |
b8468bc7 NC |
1082 | |
1083 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, | |
1084 | ||
1085 | /* These are for obj c. */ | |
1086 | DEFINE_LANG_NAME ("Objective C") | |
1087 | ||
1088 | { "-lang-objc", "" }, | |
1089 | { "-gen-decls", "Dump decls to a .decl file" }, | |
62e7b719 | 1090 | { "-fgnu-runtime", "Generate code for GNU runtime environment" }, |
b8468bc7 NC |
1091 | { "-fno-gnu-runtime", "" }, |
1092 | { "-fnext-runtime", "Generate code for NeXT runtime environment" }, | |
1093 | { "-fno-next-runtime", "" }, | |
1094 | { "-Wselector", "Warn if a selector has multiple methods" }, | |
1095 | { "-Wno-selector", "" }, | |
1096 | { "-Wprotocol", "" }, | |
1097 | { "-Wno-protocol", "Do not warn if inherited methods are unimplemented"}, | |
1098 | { "-print-objc-runtime-info", | |
1099 | "Generate C header of platform specific features" }, | |
a0d85b75 | 1100 | |
2a95de17 | 1101 | #include "options.h" |
b8468bc7 | 1102 | |
b99933c7 | 1103 | }; |
b8468bc7 NC |
1104 | |
1105 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1106 | and which bits in `target_switches' it should set or clear. | |
1107 | If VALUE is positive, it is bits to set. | |
1108 | If VALUE is negative, -VALUE is bits to clear. | |
1109 | (The sign bit is not used so there is no confusion.) */ | |
1110 | ||
1111 | struct | |
1112 | { | |
87e11268 | 1113 | const char * name; |
b8468bc7 | 1114 | int value; |
87e11268 | 1115 | const char * description; |
b8468bc7 NC |
1116 | } |
1117 | target_switches [] = TARGET_SWITCHES; | |
1118 | ||
1119 | /* This table is similar, but allows the switch to have a value. */ | |
1120 | ||
1121 | #ifdef TARGET_OPTIONS | |
1122 | struct | |
1123 | { | |
87e11268 KG |
1124 | const char * prefix; |
1125 | const char ** variable; | |
1126 | const char * description; | |
b8468bc7 NC |
1127 | } |
1128 | target_options [] = TARGET_OPTIONS; | |
1129 | #endif | |
4291d9c8 RS |
1130 | \f |
1131 | /* Options controlling warnings */ | |
1132 | ||
1133 | /* Don't print warning messages. -w. */ | |
1134 | ||
1135 | int inhibit_warnings = 0; | |
1136 | ||
1137 | /* Print various extra warnings. -W. */ | |
1138 | ||
1139 | int extra_warnings = 0; | |
1140 | ||
1141 | /* Treat warnings as errors. -Werror. */ | |
1142 | ||
1143 | int warnings_are_errors = 0; | |
1144 | ||
1145 | /* Nonzero to warn about unused local variables. */ | |
1146 | ||
1147 | int warn_unused; | |
1148 | ||
1149 | /* Nonzero to warn about variables used before they are initialized. */ | |
1150 | ||
1151 | int warn_uninitialized; | |
1152 | ||
1153 | /* Nonzero means warn about all declarations which shadow others. */ | |
1154 | ||
1155 | int warn_shadow; | |
1156 | ||
1157 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
1158 | ||
1159 | int warn_switch; | |
1160 | ||
1161 | /* Nonzero means warn about function definitions that default the return type | |
1162 | or that use a null return and have a return-type other than void. */ | |
1163 | ||
1164 | int warn_return_type; | |
1165 | ||
1166 | /* Nonzero means warn about pointer casts that increase the required | |
1167 | alignment of the target type (and might therefore lead to a crash | |
1168 | due to a misaligned access). */ | |
1169 | ||
1170 | int warn_cast_align; | |
1171 | ||
1172 | /* Nonzero means warn about any identifiers that match in the first N | |
1173 | characters. The value N is in `id_clash_len'. */ | |
1174 | ||
1175 | int warn_id_clash; | |
b51e9c62 RK |
1176 | unsigned id_clash_len; |
1177 | ||
1178 | /* Nonzero means warn about any objects definitions whose size is larger | |
1179 | than N bytes. Also want about function definitions whose returned | |
1180 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
1181 | ||
1182 | int warn_larger_than; | |
1183 | unsigned larger_than_size; | |
4291d9c8 RS |
1184 | |
1185 | /* Nonzero means warn if inline function is too large. */ | |
1186 | ||
1187 | int warn_inline; | |
1188 | ||
1189 | /* Warn if a function returns an aggregate, | |
1190 | since there are often incompatible calling conventions for doing this. */ | |
1191 | ||
1192 | int warn_aggregate_return; | |
1193 | ||
1194 | /* Likewise for -W. */ | |
1195 | ||
b8468bc7 | 1196 | lang_independent_options W_options[] = |
4291d9c8 | 1197 | { |
b8468bc7 NC |
1198 | {"unused", &warn_unused, 1, "Warn when a variable is unused" }, |
1199 | {"error", &warnings_are_errors, 1, ""}, | |
1200 | {"shadow", &warn_shadow, 1, "Warn when one local variable shadows another" }, | |
1201 | {"switch", &warn_switch, 1, | |
1202 | "Warn about enumerated switches missing a specific case" }, | |
1203 | {"aggregate-return", &warn_aggregate_return, 1, | |
1204 | "Warn about returning structures, unions or arrays" }, | |
1205 | {"cast-align", &warn_cast_align, 1, | |
1206 | "Warn about pointer casts which increase alignment" }, | |
1207 | {"uninitialized", &warn_uninitialized, 1, | |
1208 | "Warn about unitialized automatic variables"}, | |
1209 | {"inline", &warn_inline, 1, | |
1210 | "Warn when an inlined function cannot be inlined"} | |
4291d9c8 RS |
1211 | }; |
1212 | \f | |
1213 | /* Output files for assembler code (real compiler output) | |
1214 | and debugging dumps. */ | |
1215 | ||
1216 | FILE *asm_out_file; | |
1217 | FILE *aux_info_file; | |
032713aa | 1218 | FILE *rtl_dump_file = NULL; |
4291d9c8 RS |
1219 | |
1220 | /* Time accumulators, to count the total time spent in various passes. */ | |
1221 | ||
1222 | int parse_time; | |
1223 | int varconst_time; | |
1224 | int integration_time; | |
1225 | int jump_time; | |
1226 | int cse_time; | |
7506f491 | 1227 | int gcse_time; |
4291d9c8 RS |
1228 | int loop_time; |
1229 | int cse2_time; | |
0d332add | 1230 | int branch_prob_time; |
4291d9c8 RS |
1231 | int flow_time; |
1232 | int combine_time; | |
8c660648 | 1233 | int regmove_time; |
4291d9c8 RS |
1234 | int sched_time; |
1235 | int local_alloc_time; | |
1236 | int global_alloc_time; | |
1237 | int sched2_time; | |
bd334356 | 1238 | #ifdef DELAY_SLOTS |
4291d9c8 | 1239 | int dbr_sched_time; |
bd334356 | 1240 | #endif |
4291d9c8 RS |
1241 | int shorten_branch_time; |
1242 | int stack_reg_time; | |
1243 | int final_time; | |
1244 | int symout_time; | |
1245 | int dump_time; | |
1246 | \f | |
1247 | /* Return time used so far, in microseconds. */ | |
1248 | ||
2778b98d | 1249 | long |
4291d9c8 RS |
1250 | get_run_time () |
1251 | { | |
4291d9c8 RS |
1252 | if (quiet_flag) |
1253 | return 0; | |
83c8ddef | 1254 | |
332c1bb4 JL |
1255 | #ifdef __BEOS__ |
1256 | return 0; | |
1257 | #else /* not BeOS */ | |
cae21ae8 | 1258 | #if defined (_WIN32) && !defined (__CYGWIN__) |
15f00097 RK |
1259 | if (clock() < 0) |
1260 | return 0; | |
1261 | else | |
1262 | return (clock() * 1000); | |
9580b583 | 1263 | #else /* not _WIN32 */ |
4e762a38 JC |
1264 | #ifdef _SC_CLK_TCK |
1265 | { | |
1266 | static int tick; | |
83c8ddef | 1267 | struct tms tms; |
4e762a38 JC |
1268 | if (tick == 0) |
1269 | tick = 1000000 / sysconf(_SC_CLK_TCK); | |
1270 | times (&tms); | |
1271 | return (tms.tms_utime + tms.tms_stime) * tick; | |
1272 | } | |
1273 | #else | |
4291d9c8 | 1274 | #ifdef USG |
83c8ddef RH |
1275 | { |
1276 | struct tms tms; | |
e5e809f4 JL |
1277 | # if HAVE_SYSCONF && defined _SC_CLK_TCK |
1278 | # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */ | |
1279 | # else | |
1280 | # ifdef CLK_TCK | |
1281 | # define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */ | |
1282 | # else | |
1283 | # define TICKS_PER_SECOND HZ /* traditional UNIX */ | |
1284 | # endif | |
1285 | # endif | |
83c8ddef | 1286 | times (&tms); |
e5e809f4 | 1287 | return (tms.tms_utime + tms.tms_stime) * (1000000 / TICKS_PER_SECOND); |
83c8ddef | 1288 | } |
4291d9c8 RS |
1289 | #else |
1290 | #ifndef VMS | |
83c8ddef RH |
1291 | { |
1292 | struct rusage rusage; | |
1293 | getrusage (0, &rusage); | |
1294 | return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec | |
1295 | + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); | |
1296 | } | |
4291d9c8 | 1297 | #else /* VMS */ |
83c8ddef RH |
1298 | { |
1299 | struct | |
1300 | { | |
1301 | int proc_user_time; | |
1302 | int proc_system_time; | |
1303 | int child_user_time; | |
1304 | int child_system_time; | |
1305 | } vms_times; | |
1306 | times ((void *) &vms_times); | |
1307 | return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; | |
1308 | } | |
c55dcc7d FF |
1309 | #endif /* VMS */ |
1310 | #endif /* USG */ | |
4e762a38 | 1311 | #endif /* _SC_CLK_TCK */ |
c55dcc7d FF |
1312 | #endif /* _WIN32 */ |
1313 | #endif /* __BEOS__ */ | |
4291d9c8 RS |
1314 | } |
1315 | ||
1316 | #define TIMEVAR(VAR, BODY) \ | |
1317 | do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0) | |
1318 | ||
1319 | void | |
1320 | print_time (str, total) | |
87e11268 | 1321 | const char *str; |
4291d9c8 RS |
1322 | int total; |
1323 | { | |
1324 | fprintf (stderr, | |
1325 | "time in %s: %d.%06d\n", | |
1326 | str, total / 1000000, total % 1000000); | |
1327 | } | |
1328 | ||
1329 | /* Count an error or warning. Return 1 if the message should be printed. */ | |
1330 | ||
1331 | int | |
1332 | count_error (warningp) | |
1333 | int warningp; | |
1334 | { | |
1335 | if (warningp && inhibit_warnings) | |
1336 | return 0; | |
1337 | ||
1338 | if (warningp && !warnings_are_errors) | |
1339 | warningcount++; | |
1340 | else | |
1341 | { | |
1342 | static int warning_message = 0; | |
1343 | ||
1344 | if (warningp && !warning_message) | |
1345 | { | |
1346 | fprintf (stderr, "%s: warnings being treated as errors\n", progname); | |
1347 | warning_message = 1; | |
1348 | } | |
1349 | errorcount++; | |
1350 | } | |
1351 | ||
1352 | return 1; | |
1353 | } | |
1354 | ||
1355 | /* Print a fatal error message. NAME is the text. | |
1356 | Also include a system error message based on `errno'. */ | |
1357 | ||
1358 | void | |
1359 | pfatal_with_name (name) | |
87e11268 | 1360 | const char *name; |
4291d9c8 RS |
1361 | { |
1362 | fprintf (stderr, "%s: ", progname); | |
1363 | perror (name); | |
299846f2 | 1364 | exit (FATAL_EXIT_CODE); |
4291d9c8 RS |
1365 | } |
1366 | ||
1367 | void | |
1368 | fatal_io_error (name) | |
87e11268 | 1369 | const char *name; |
4291d9c8 RS |
1370 | { |
1371 | fprintf (stderr, "%s: %s: I/O error\n", progname, name); | |
299846f2 | 1372 | exit (FATAL_EXIT_CODE); |
4291d9c8 RS |
1373 | } |
1374 | ||
a89b2cc4 MM |
1375 | /* Called to give a better error message for a bad insn rather than |
1376 | just calling abort(). */ | |
4291d9c8 RS |
1377 | |
1378 | void | |
a89b2cc4 | 1379 | fatal_insn (message, insn) |
87e11268 | 1380 | const char *message; |
4291d9c8 RS |
1381 | rtx insn; |
1382 | { | |
b93a436e JL |
1383 | error (message); |
1384 | debug_rtx (insn); | |
4291d9c8 RS |
1385 | if (asm_out_file) |
1386 | fflush (asm_out_file); | |
1387 | if (aux_info_file) | |
1388 | fflush (aux_info_file); | |
032713aa | 1389 | if (rtl_dump_file != NULL) |
4291d9c8 | 1390 | fflush (rtl_dump_file); |
1902f7fd MM |
1391 | fflush (stdout); |
1392 | fflush (stderr); | |
4291d9c8 RS |
1393 | abort (); |
1394 | } | |
1395 | ||
a89b2cc4 MM |
1396 | /* Called to give a better error message when we don't have an insn to match |
1397 | what we are looking for or if the insn's constraints aren't satisfied, | |
1398 | rather than just calling abort(). */ | |
1399 | ||
1400 | void | |
1401 | fatal_insn_not_found (insn) | |
1402 | rtx insn; | |
1403 | { | |
1404 | if (INSN_CODE (insn) < 0) | |
1405 | fatal_insn ("internal error--unrecognizable insn:", insn); | |
1406 | else | |
1407 | fatal_insn ("internal error--insn does not satisfy its constraints:", insn); | |
1408 | } | |
1409 | ||
4291d9c8 RS |
1410 | /* This is the default decl_printable_name function. */ |
1411 | ||
1412 | static char * | |
a1d7ffe3 | 1413 | decl_name (decl, verbosity) |
4291d9c8 | 1414 | tree decl; |
114791ea | 1415 | int verbosity ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1416 | { |
1417 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1418 | } | |
1419 | \f | |
1420 | static int need_error_newline; | |
1421 | ||
1422 | /* Function of last error message; | |
1423 | more generally, function such that if next error message is in it | |
1424 | then we don't have to mention the function name. */ | |
1425 | static tree last_error_function = NULL; | |
1426 | ||
1427 | /* Used to detect when input_file_stack has changed since last described. */ | |
1428 | static int last_error_tick; | |
1429 | ||
1430 | /* Called when the start of a function definition is parsed, | |
1431 | this function prints on stderr the name of the function. */ | |
1432 | ||
1433 | void | |
1434 | announce_function (decl) | |
1435 | tree decl; | |
1436 | { | |
1437 | if (! quiet_flag) | |
1438 | { | |
4291d9c8 RS |
1439 | if (rtl_dump_and_exit) |
1440 | fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); | |
1441 | else | |
a1d7ffe3 | 1442 | fprintf (stderr, " %s", (*decl_printable_name) (decl, 2)); |
4291d9c8 RS |
1443 | fflush (stderr); |
1444 | need_error_newline = 1; | |
1445 | last_error_function = current_function_decl; | |
1446 | } | |
1447 | } | |
1448 | ||
b64e9948 PB |
1449 | /* The default function to print out name of current function that caused |
1450 | an error. */ | |
4291d9c8 RS |
1451 | |
1452 | void | |
b64e9948 | 1453 | default_print_error_function (file) |
87e11268 | 1454 | const char *file; |
4291d9c8 | 1455 | { |
4291d9c8 RS |
1456 | if (last_error_function != current_function_decl) |
1457 | { | |
87e11268 | 1458 | const char *kind = "function"; |
4291d9c8 RS |
1459 | if (current_function_decl != 0 |
1460 | && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) | |
1461 | kind = "method"; | |
1462 | ||
1463 | if (file) | |
1464 | fprintf (stderr, "%s: ", file); | |
1465 | ||
1466 | if (current_function_decl == NULL) | |
1467 | fprintf (stderr, "At top level:\n"); | |
1468 | else | |
1469 | { | |
a1d7ffe3 | 1470 | char *name = (*decl_printable_name) (current_function_decl, 2); |
4291d9c8 RS |
1471 | fprintf (stderr, "In %s `%s':\n", kind, name); |
1472 | } | |
1473 | ||
1474 | last_error_function = current_function_decl; | |
1475 | } | |
b64e9948 PB |
1476 | } |
1477 | ||
1478 | /* Called by report_error_function to print out function name. | |
0f41302f | 1479 | * Default may be overridden by language front-ends. */ |
b64e9948 | 1480 | |
87e11268 KG |
1481 | void (*print_error_function) PROTO((const char *)) = |
1482 | default_print_error_function; | |
b64e9948 PB |
1483 | |
1484 | /* Prints out, if necessary, the name of the current function | |
1485 | that caused an error. Called from all error and warning functions. */ | |
1486 | ||
1487 | void | |
1488 | report_error_function (file) | |
87e11268 | 1489 | const char *file; |
b64e9948 PB |
1490 | { |
1491 | struct file_stack *p; | |
1492 | ||
1493 | if (need_error_newline) | |
1494 | { | |
1495 | fprintf (stderr, "\n"); | |
1496 | need_error_newline = 0; | |
1497 | } | |
1498 | ||
1499 | (*print_error_function) (file); | |
1500 | ||
4291d9c8 | 1501 | if (input_file_stack && input_file_stack->next != 0 |
2efc92ed RK |
1502 | && input_file_stack_tick != last_error_tick |
1503 | && file == input_filename) | |
4291d9c8 RS |
1504 | { |
1505 | fprintf (stderr, "In file included"); | |
1506 | for (p = input_file_stack->next; p; p = p->next) | |
1507 | { | |
1508 | fprintf (stderr, " from %s:%d", p->name, p->line); | |
1509 | if (p->next) | |
e5301904 | 1510 | fprintf (stderr, ",\n "); |
4291d9c8 RS |
1511 | } |
1512 | fprintf (stderr, ":\n"); | |
1513 | last_error_tick = input_file_stack_tick; | |
1514 | } | |
1515 | } | |
eb711c86 RK |
1516 | \f |
1517 | /* Print a message. */ | |
4291d9c8 | 1518 | |
eb711c86 RK |
1519 | static void |
1520 | vmessage (prefix, s, ap) | |
87e11268 KG |
1521 | const char *prefix; |
1522 | const char *s; | |
eb711c86 | 1523 | va_list ap; |
4291d9c8 | 1524 | { |
eb711c86 RK |
1525 | if (prefix) |
1526 | fprintf (stderr, "%s: ", prefix); | |
1527 | ||
eb711c86 | 1528 | vfprintf (stderr, s, ap); |
4291d9c8 RS |
1529 | } |
1530 | ||
eb711c86 | 1531 | /* Print a message relevant to line LINE of file FILE. */ |
4291d9c8 | 1532 | |
eb711c86 RK |
1533 | static void |
1534 | v_message_with_file_and_line (file, line, prefix, s, ap) | |
87e11268 | 1535 | const char *file; |
4291d9c8 | 1536 | int line; |
87e11268 KG |
1537 | const char *prefix; |
1538 | const char *s; | |
eb711c86 | 1539 | va_list ap; |
4291d9c8 | 1540 | { |
4291d9c8 RS |
1541 | if (file) |
1542 | fprintf (stderr, "%s:%d: ", file, line); | |
1543 | else | |
1544 | fprintf (stderr, "%s: ", progname); | |
d78c6ad5 | 1545 | |
eb711c86 RK |
1546 | vmessage (prefix, s, ap); |
1547 | fputc ('\n', stderr); | |
4291d9c8 RS |
1548 | } |
1549 | ||
eb711c86 | 1550 | /* Print a message relevant to the given DECL. */ |
4291d9c8 | 1551 | |
eb711c86 RK |
1552 | static void |
1553 | v_message_with_decl (decl, prefix, s, ap) | |
4291d9c8 | 1554 | tree decl; |
87e11268 KG |
1555 | const char *prefix; |
1556 | const char *s; | |
eb711c86 | 1557 | va_list ap; |
4291d9c8 | 1558 | { |
87e11268 | 1559 | const char *p; |
4291d9c8 RS |
1560 | |
1561 | fprintf (stderr, "%s:%d: ", | |
1562 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); | |
1563 | ||
eb711c86 RK |
1564 | if (prefix) |
1565 | fprintf (stderr, "%s: ", prefix); | |
1566 | ||
1567 | /* Do magic to get around lack of varargs support for insertion | |
1568 | of arguments into existing list. We know that the decl is first; | |
1569 | we ass_u_me that it will be printed with "%s". */ | |
1570 | ||
1571 | for (p = s; *p; ++p) | |
1572 | { | |
1573 | if (*p == '%') | |
1574 | { | |
1575 | if (*(p + 1) == '%') | |
1576 | ++p; | |
1577 | else | |
1578 | break; | |
1579 | } | |
1580 | } | |
1581 | ||
cb039f8a RK |
1582 | if (p > s) /* Print the left-hand substring. */ |
1583 | { | |
1584 | char fmt[sizeof "%.255s"]; | |
1585 | long width = p - s; | |
1586 | ||
1587 | if (width > 255L) width = 255L; /* arbitrary */ | |
1588 | sprintf (fmt, "%%.%lds", width); | |
1589 | fprintf (stderr, fmt, s); | |
1590 | } | |
eb711c86 | 1591 | |
cb039f8a | 1592 | if (*p == '%') /* Print the name. */ |
eb711c86 | 1593 | { |
87e11268 | 1594 | const char *n = (DECL_NAME (decl) |
a1d7ffe3 | 1595 | ? (*decl_printable_name) (decl, 2) |
eb711c86 RK |
1596 | : "((anonymous))"); |
1597 | fputs (n, stderr); | |
1598 | while (*p) | |
1599 | { | |
1600 | ++p; | |
e9a780ec | 1601 | if (ISALPHA (*(p - 1) & 0xFF)) |
eb711c86 RK |
1602 | break; |
1603 | } | |
1604 | } | |
1605 | ||
cb039f8a | 1606 | if (*p) /* Print the rest of the message. */ |
eb711c86 RK |
1607 | vmessage ((char *)NULL, p, ap); |
1608 | ||
1609 | fputc ('\n', stderr); | |
4291d9c8 RS |
1610 | } |
1611 | ||
eb711c86 | 1612 | /* Figure file and line of the given INSN. */ |
4291d9c8 | 1613 | |
eb711c86 RK |
1614 | static void |
1615 | file_and_line_for_asm (insn, pfile, pline) | |
4291d9c8 | 1616 | rtx insn; |
eb711c86 RK |
1617 | char **pfile; |
1618 | int *pline; | |
4291d9c8 | 1619 | { |
4291d9c8 RS |
1620 | rtx body = PATTERN (insn); |
1621 | rtx asmop; | |
1622 | ||
1623 | /* Find the (or one of the) ASM_OPERANDS in the insn. */ | |
1624 | if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS) | |
1625 | asmop = SET_SRC (body); | |
1626 | else if (GET_CODE (body) == ASM_OPERANDS) | |
1627 | asmop = body; | |
1628 | else if (GET_CODE (body) == PARALLEL | |
1629 | && GET_CODE (XVECEXP (body, 0, 0)) == SET) | |
1630 | asmop = SET_SRC (XVECEXP (body, 0, 0)); | |
1631 | else if (GET_CODE (body) == PARALLEL | |
1632 | && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS) | |
1633 | asmop = XVECEXP (body, 0, 0); | |
eb711c86 RK |
1634 | else |
1635 | asmop = NULL; | |
1636 | ||
1637 | if (asmop) | |
1638 | { | |
1639 | *pfile = ASM_OPERANDS_SOURCE_FILE (asmop); | |
1640 | *pline = ASM_OPERANDS_SOURCE_LINE (asmop); | |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | *pfile = input_filename; | |
1645 | *pline = lineno; | |
1646 | } | |
1647 | } | |
4291d9c8 | 1648 | |
eb711c86 | 1649 | /* Report an error at line LINE of file FILE. */ |
4291d9c8 | 1650 | |
eb711c86 RK |
1651 | static void |
1652 | v_error_with_file_and_line (file, line, s, ap) | |
87e11268 | 1653 | const char *file; |
eb711c86 | 1654 | int line; |
87e11268 | 1655 | const char *s; |
eb711c86 RK |
1656 | va_list ap; |
1657 | { | |
1658 | count_error (0); | |
1659 | report_error_function (file); | |
1660 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); | |
d78c6ad5 RK |
1661 | } |
1662 | ||
1663 | void | |
87e11268 KG |
1664 | error_with_file_and_line VPROTO((const char *file, int line, |
1665 | const char *s, ...)) | |
d78c6ad5 | 1666 | { |
5148a72b | 1667 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1668 | const char *file; |
eb711c86 | 1669 | int line; |
87e11268 | 1670 | const char *s; |
e0e2a8da RK |
1671 | #endif |
1672 | va_list ap; | |
1673 | ||
1674 | VA_START (ap, s); | |
eb711c86 | 1675 | |
5148a72b | 1676 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1677 | file = va_arg (ap, const char *); |
eb711c86 | 1678 | line = va_arg (ap, int); |
87e11268 | 1679 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1680 | #endif |
1681 | ||
eb711c86 RK |
1682 | v_error_with_file_and_line (file, line, s, ap); |
1683 | va_end (ap); | |
4291d9c8 RS |
1684 | } |
1685 | ||
eb711c86 RK |
1686 | /* Report an error at the declaration DECL. |
1687 | S is a format string which uses %s to substitute the declaration | |
1688 | name; subsequent substitutions are a la printf. */ | |
1689 | ||
1690 | static void | |
1691 | v_error_with_decl (decl, s, ap) | |
1692 | tree decl; | |
87e11268 | 1693 | const char *s; |
eb711c86 RK |
1694 | va_list ap; |
1695 | { | |
1696 | count_error (0); | |
1697 | report_error_function (DECL_SOURCE_FILE (decl)); | |
1698 | v_message_with_decl (decl, (char *)NULL, s, ap); | |
1699 | } | |
4291d9c8 RS |
1700 | |
1701 | void | |
87e11268 | 1702 | error_with_decl VPROTO((tree decl, const char *s, ...)) |
eb711c86 | 1703 | { |
5148a72b | 1704 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1705 | tree decl; |
87e11268 | 1706 | const char *s; |
e0e2a8da RK |
1707 | #endif |
1708 | va_list ap; | |
eb711c86 | 1709 | |
e0e2a8da RK |
1710 | VA_START (ap, s); |
1711 | ||
5148a72b | 1712 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1713 | decl = va_arg (ap, tree); |
87e11268 | 1714 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1715 | #endif |
1716 | ||
eb711c86 RK |
1717 | v_error_with_decl (decl, s, ap); |
1718 | va_end (ap); | |
1719 | } | |
1720 | ||
1721 | /* Report an error at the line number of the insn INSN. | |
1722 | This is used only when INSN is an `asm' with operands, | |
1723 | and each ASM_OPERANDS records its own source file and line. */ | |
1724 | ||
1725 | static void | |
1726 | v_error_for_asm (insn, s, ap) | |
1727 | rtx insn; | |
87e11268 | 1728 | const char *s; |
eb711c86 | 1729 | va_list ap; |
4291d9c8 | 1730 | { |
eb711c86 RK |
1731 | char *file; |
1732 | int line; | |
4291d9c8 | 1733 | |
eb711c86 RK |
1734 | count_error (0); |
1735 | file_and_line_for_asm (insn, &file, &line); | |
4291d9c8 | 1736 | report_error_function (file); |
eb711c86 RK |
1737 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); |
1738 | } | |
4291d9c8 | 1739 | |
eb711c86 | 1740 | void |
87e11268 | 1741 | error_for_asm VPROTO((rtx insn, const char *s, ...)) |
eb711c86 | 1742 | { |
5148a72b | 1743 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1744 | rtx insn; |
87e11268 | 1745 | const char *s; |
e0e2a8da RK |
1746 | #endif |
1747 | va_list ap; | |
eb711c86 | 1748 | |
e0e2a8da RK |
1749 | VA_START (ap, s); |
1750 | ||
5148a72b | 1751 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1752 | insn = va_arg (ap, rtx); |
87e11268 | 1753 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1754 | #endif |
1755 | ||
eb711c86 RK |
1756 | v_error_for_asm (insn, s, ap); |
1757 | va_end (ap); | |
4291d9c8 RS |
1758 | } |
1759 | ||
eb711c86 | 1760 | /* Report an error at the current line number. */ |
4291d9c8 | 1761 | |
eb711c86 RK |
1762 | static void |
1763 | verror (s, ap) | |
87e11268 | 1764 | const char *s; |
eb711c86 | 1765 | va_list ap; |
4291d9c8 | 1766 | { |
eb711c86 | 1767 | v_error_with_file_and_line (input_filename, lineno, s, ap); |
4291d9c8 RS |
1768 | } |
1769 | ||
eb711c86 | 1770 | void |
87e11268 | 1771 | error VPROTO((const char *s, ...)) |
eb711c86 | 1772 | { |
5148a72b | 1773 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1774 | const char *s; |
e0e2a8da RK |
1775 | #endif |
1776 | va_list ap; | |
1777 | ||
1778 | VA_START (ap, s); | |
eb711c86 | 1779 | |
5148a72b | 1780 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1781 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1782 | #endif |
1783 | ||
eb711c86 RK |
1784 | verror (s, ap); |
1785 | va_end (ap); | |
1786 | } | |
1787 | ||
1788 | /* Report a fatal error at the current line number. */ | |
1789 | ||
1790 | static void | |
1791 | vfatal (s, ap) | |
87e11268 | 1792 | const char *s; |
eb711c86 RK |
1793 | va_list ap; |
1794 | { | |
1795 | verror (s, ap); | |
299846f2 | 1796 | exit (FATAL_EXIT_CODE); |
eb711c86 | 1797 | } |
4291d9c8 RS |
1798 | |
1799 | void | |
87e11268 | 1800 | fatal VPROTO((const char *s, ...)) |
eb711c86 | 1801 | { |
5148a72b | 1802 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1803 | const char *s; |
e0e2a8da RK |
1804 | #endif |
1805 | va_list ap; | |
1806 | ||
1807 | VA_START (ap, s); | |
eb711c86 | 1808 | |
5148a72b | 1809 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1810 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1811 | #endif |
1812 | ||
eb711c86 RK |
1813 | vfatal (s, ap); |
1814 | va_end (ap); | |
1815 | } | |
1816 | ||
1817 | /* Report a warning at line LINE of file FILE. */ | |
1818 | ||
1819 | static void | |
1820 | v_warning_with_file_and_line (file, line, s, ap) | |
87e11268 | 1821 | const char *file; |
eb711c86 | 1822 | int line; |
87e11268 | 1823 | const char *s; |
eb711c86 | 1824 | va_list ap; |
4291d9c8 | 1825 | { |
eb711c86 RK |
1826 | if (count_error (1)) |
1827 | { | |
1828 | report_error_function (file); | |
1829 | v_message_with_file_and_line (file, line, "warning", s, ap); | |
1830 | } | |
1831 | } | |
4291d9c8 | 1832 | |
eb711c86 | 1833 | void |
87e11268 KG |
1834 | warning_with_file_and_line VPROTO((const char *file, int line, |
1835 | const char *s, ...)) | |
eb711c86 | 1836 | { |
5148a72b | 1837 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1838 | const char *file; |
eb711c86 | 1839 | int line; |
87e11268 | 1840 | const char *s; |
e0e2a8da RK |
1841 | #endif |
1842 | va_list ap; | |
1843 | ||
1844 | VA_START (ap, s); | |
eb711c86 | 1845 | |
5148a72b | 1846 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1847 | file = va_arg (ap, const char *); |
eb711c86 | 1848 | line = va_arg (ap, int); |
87e11268 | 1849 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1850 | #endif |
1851 | ||
eb711c86 RK |
1852 | v_warning_with_file_and_line (file, line, s, ap); |
1853 | va_end (ap); | |
1854 | } | |
4291d9c8 | 1855 | |
eb711c86 RK |
1856 | /* Report a warning at the declaration DECL. |
1857 | S is a format string which uses %s to substitute the declaration | |
1858 | name; subsequent substitutions are a la printf. */ | |
4291d9c8 | 1859 | |
eb711c86 RK |
1860 | static void |
1861 | v_warning_with_decl (decl, s, ap) | |
1862 | tree decl; | |
87e11268 | 1863 | const char *s; |
eb711c86 RK |
1864 | va_list ap; |
1865 | { | |
1866 | if (count_error (1)) | |
1867 | { | |
1868 | report_error_function (DECL_SOURCE_FILE (decl)); | |
1869 | v_message_with_decl (decl, "warning", s, ap); | |
1870 | } | |
1871 | } | |
4291d9c8 | 1872 | |
eb711c86 | 1873 | void |
87e11268 | 1874 | warning_with_decl VPROTO((tree decl, const char *s, ...)) |
eb711c86 | 1875 | { |
5148a72b | 1876 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1877 | tree decl; |
87e11268 | 1878 | const char *s; |
e0e2a8da RK |
1879 | #endif |
1880 | va_list ap; | |
eb711c86 | 1881 | |
e0e2a8da RK |
1882 | VA_START (ap, s); |
1883 | ||
5148a72b | 1884 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1885 | decl = va_arg (ap, tree); |
87e11268 | 1886 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1887 | #endif |
1888 | ||
eb711c86 RK |
1889 | v_warning_with_decl (decl, s, ap); |
1890 | va_end (ap); | |
4291d9c8 RS |
1891 | } |
1892 | ||
1893 | /* Report a warning at the line number of the insn INSN. | |
4291d9c8 RS |
1894 | This is used only when INSN is an `asm' with operands, |
1895 | and each ASM_OPERANDS records its own source file and line. */ | |
1896 | ||
eb711c86 RK |
1897 | static void |
1898 | v_warning_for_asm (insn, s, ap) | |
4291d9c8 | 1899 | rtx insn; |
87e11268 | 1900 | const char *s; |
eb711c86 | 1901 | va_list ap; |
4291d9c8 | 1902 | { |
eb711c86 RK |
1903 | if (count_error (1)) |
1904 | { | |
1905 | char *file; | |
1906 | int line; | |
4291d9c8 | 1907 | |
eb711c86 RK |
1908 | file_and_line_for_asm (insn, &file, &line); |
1909 | report_error_function (file); | |
1910 | v_message_with_file_and_line (file, line, "warning", s, ap); | |
1911 | } | |
1912 | } | |
4291d9c8 | 1913 | |
eb711c86 | 1914 | void |
87e11268 | 1915 | warning_for_asm VPROTO((rtx insn, const char *s, ...)) |
eb711c86 | 1916 | { |
5148a72b | 1917 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1918 | rtx insn; |
87e11268 | 1919 | const char *s; |
e0e2a8da RK |
1920 | #endif |
1921 | va_list ap; | |
1922 | ||
1923 | VA_START (ap, s); | |
eb711c86 | 1924 | |
5148a72b | 1925 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 1926 | insn = va_arg (ap, rtx); |
87e11268 | 1927 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1928 | #endif |
1929 | ||
eb711c86 RK |
1930 | v_warning_for_asm (insn, s, ap); |
1931 | va_end (ap); | |
1932 | } | |
4291d9c8 | 1933 | |
eb711c86 RK |
1934 | /* Report a warning at the current line number. */ |
1935 | ||
1936 | static void | |
1937 | vwarning (s, ap) | |
87e11268 | 1938 | const char *s; |
eb711c86 RK |
1939 | va_list ap; |
1940 | { | |
1941 | v_warning_with_file_and_line (input_filename, lineno, s, ap); | |
4291d9c8 | 1942 | } |
eb711c86 RK |
1943 | |
1944 | void | |
87e11268 | 1945 | warning VPROTO((const char *s, ...)) |
eb711c86 | 1946 | { |
5148a72b | 1947 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1948 | const char *s; |
e0e2a8da RK |
1949 | #endif |
1950 | va_list ap; | |
1951 | ||
1952 | VA_START (ap, s); | |
eb711c86 | 1953 | |
5148a72b | 1954 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1955 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1956 | #endif |
1957 | ||
eb711c86 RK |
1958 | vwarning (s, ap); |
1959 | va_end (ap); | |
1960 | } | |
1961 | ||
4291d9c8 RS |
1962 | /* These functions issue either warnings or errors depending on |
1963 | -pedantic-errors. */ | |
1964 | ||
eb711c86 RK |
1965 | static void |
1966 | vpedwarn (s, ap) | |
87e11268 | 1967 | const char *s; |
eb711c86 | 1968 | va_list ap; |
4291d9c8 RS |
1969 | { |
1970 | if (flag_pedantic_errors) | |
eb711c86 | 1971 | verror (s, ap); |
4291d9c8 | 1972 | else |
eb711c86 | 1973 | vwarning (s, ap); |
4291d9c8 RS |
1974 | } |
1975 | ||
1976 | void | |
87e11268 | 1977 | pedwarn VPROTO((const char *s, ...)) |
eb711c86 | 1978 | { |
5148a72b | 1979 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1980 | const char *s; |
e0e2a8da RK |
1981 | #endif |
1982 | va_list ap; | |
1983 | ||
1984 | VA_START (ap, s); | |
eb711c86 | 1985 | |
5148a72b | 1986 | #ifndef ANSI_PROTOTYPES |
87e11268 | 1987 | s = va_arg (ap, const char *); |
e0e2a8da RK |
1988 | #endif |
1989 | ||
eb711c86 RK |
1990 | vpedwarn (s, ap); |
1991 | va_end (ap); | |
1992 | } | |
1993 | ||
1994 | static void | |
1995 | v_pedwarn_with_decl (decl, s, ap) | |
4291d9c8 | 1996 | tree decl; |
87e11268 | 1997 | const char *s; |
eb711c86 | 1998 | va_list ap; |
4291d9c8 | 1999 | { |
1554cdf5 DE |
2000 | /* We don't want -pedantic-errors to cause the compilation to fail from |
2001 | "errors" in system header files. Sometimes fixincludes can't fix what's | |
2002 | broken (eg: unsigned char bitfields - fixing it may change the alignment | |
2003 | which will cause programs to mysteriously fail because the C library | |
22d74562 DE |
2004 | or kernel uses the original layout). There's no point in issuing a |
2005 | warning either, it's just unnecessary noise. */ | |
1554cdf5 | 2006 | |
22d74562 DE |
2007 | if (! DECL_IN_SYSTEM_HEADER (decl)) |
2008 | { | |
2009 | if (flag_pedantic_errors) | |
2010 | v_error_with_decl (decl, s, ap); | |
2011 | else | |
2012 | v_warning_with_decl (decl, s, ap); | |
2013 | } | |
4291d9c8 RS |
2014 | } |
2015 | ||
2016 | void | |
87e11268 | 2017 | pedwarn_with_decl VPROTO((tree decl, const char *s, ...)) |
eb711c86 | 2018 | { |
5148a72b | 2019 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 2020 | tree decl; |
87e11268 | 2021 | const char *s; |
e0e2a8da RK |
2022 | #endif |
2023 | va_list ap; | |
eb711c86 | 2024 | |
e0e2a8da RK |
2025 | VA_START (ap, s); |
2026 | ||
5148a72b | 2027 | #ifndef ANSI_PROTOTYPES |
eb711c86 | 2028 | decl = va_arg (ap, tree); |
87e11268 | 2029 | s = va_arg (ap, const char *); |
e0e2a8da RK |
2030 | #endif |
2031 | ||
eb711c86 RK |
2032 | v_pedwarn_with_decl (decl, s, ap); |
2033 | va_end (ap); | |
2034 | } | |
2035 | ||
2036 | static void | |
2037 | v_pedwarn_with_file_and_line (file, line, s, ap) | |
87e11268 | 2038 | const char *file; |
4291d9c8 | 2039 | int line; |
87e11268 | 2040 | const char *s; |
eb711c86 | 2041 | va_list ap; |
4291d9c8 RS |
2042 | { |
2043 | if (flag_pedantic_errors) | |
eb711c86 | 2044 | v_error_with_file_and_line (file, line, s, ap); |
4291d9c8 | 2045 | else |
eb711c86 | 2046 | v_warning_with_file_and_line (file, line, s, ap); |
4291d9c8 RS |
2047 | } |
2048 | ||
4291d9c8 | 2049 | void |
87e11268 KG |
2050 | pedwarn_with_file_and_line VPROTO((const char *file, int line, |
2051 | const char *s, ...)) | |
eb711c86 | 2052 | { |
5148a72b | 2053 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2054 | const char *file; |
eb711c86 | 2055 | int line; |
87e11268 | 2056 | const char *s; |
e0e2a8da RK |
2057 | #endif |
2058 | va_list ap; | |
eb711c86 | 2059 | |
e0e2a8da RK |
2060 | VA_START (ap, s); |
2061 | ||
5148a72b | 2062 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2063 | file = va_arg (ap, const char *); |
eb711c86 | 2064 | line = va_arg (ap, int); |
87e11268 | 2065 | s = va_arg (ap, const char *); |
e0e2a8da RK |
2066 | #endif |
2067 | ||
eb711c86 RK |
2068 | v_pedwarn_with_file_and_line (file, line, s, ap); |
2069 | va_end (ap); | |
2070 | } | |
2071 | ||
2072 | /* Apologize for not implementing some feature. */ | |
2073 | ||
2074 | static void | |
2075 | vsorry (s, ap) | |
87e11268 | 2076 | const char *s; |
eb711c86 | 2077 | va_list ap; |
4291d9c8 RS |
2078 | { |
2079 | sorrycount++; | |
2080 | if (input_filename) | |
2081 | fprintf (stderr, "%s:%d: ", input_filename, lineno); | |
2082 | else | |
2083 | fprintf (stderr, "%s: ", progname); | |
eb711c86 RK |
2084 | vmessage ("sorry, not implemented", s, ap); |
2085 | fputc ('\n', stderr); | |
2086 | } | |
4291d9c8 | 2087 | |
eb711c86 | 2088 | void |
87e11268 | 2089 | sorry VPROTO((const char *s, ...)) |
eb711c86 | 2090 | { |
5148a72b | 2091 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2092 | const char *s; |
e0e2a8da RK |
2093 | #endif |
2094 | va_list ap; | |
2095 | ||
2096 | VA_START (ap, s); | |
eb711c86 | 2097 | |
5148a72b | 2098 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2099 | s = va_arg (ap, const char *); |
e0e2a8da RK |
2100 | #endif |
2101 | ||
eb711c86 RK |
2102 | vsorry (s, ap); |
2103 | va_end (ap); | |
4291d9c8 RS |
2104 | } |
2105 | ||
eb711c86 | 2106 | /* Apologize for not implementing some feature, then quit. */ |
4291d9c8 | 2107 | |
eb711c86 RK |
2108 | static void |
2109 | v_really_sorry (s, ap) | |
87e11268 | 2110 | const char *s; |
eb711c86 | 2111 | va_list ap; |
4291d9c8 | 2112 | { |
eb711c86 | 2113 | sorrycount++; |
4291d9c8 RS |
2114 | if (input_filename) |
2115 | fprintf (stderr, "%s:%d: ", input_filename, lineno); | |
2116 | else | |
c10afc44 | 2117 | fprintf (stderr, "%s: ", progname); |
eb711c86 | 2118 | vmessage ("sorry, not implemented", s, ap); |
4291d9c8 RS |
2119 | fatal (" (fatal)\n"); |
2120 | } | |
eb711c86 RK |
2121 | |
2122 | void | |
87e11268 | 2123 | really_sorry VPROTO((const char *s, ...)) |
eb711c86 | 2124 | { |
5148a72b | 2125 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2126 | const char *s; |
e0e2a8da RK |
2127 | #endif |
2128 | va_list ap; | |
2129 | ||
2130 | VA_START (ap, s); | |
eb711c86 | 2131 | |
5148a72b | 2132 | #ifndef ANSI_PROTOTYPES |
87e11268 | 2133 | s = va_arg (ap, const char *); |
e0e2a8da RK |
2134 | #endif |
2135 | ||
eb711c86 RK |
2136 | v_really_sorry (s, ap); |
2137 | va_end (ap); | |
2138 | } | |
4291d9c8 RS |
2139 | \f |
2140 | /* More 'friendly' abort that prints the line and file. | |
2141 | config.h can #define abort fancy_abort if you like that sort of thing. | |
2142 | ||
2143 | I don't think this is actually a good idea. | |
2144 | Other sorts of crashes will look a certain way. | |
2145 | It is a good thing if crashes from calling abort look the same way. | |
2146 | -- RMS */ | |
2147 | ||
2148 | void | |
2149 | fancy_abort () | |
2150 | { | |
2151 | fatal ("internal gcc abort"); | |
2152 | } | |
2153 | ||
2154 | /* This calls abort and is used to avoid problems when abort if a macro. | |
2155 | It is used when we need to pass the address of abort. */ | |
2156 | ||
2157 | void | |
2158 | do_abort () | |
2159 | { | |
2160 | abort (); | |
2161 | } | |
2162 | ||
2163 | /* When `malloc.c' is compiled with `rcheck' defined, | |
2164 | it calls this function to report clobberage. */ | |
2165 | ||
2166 | void | |
2167 | botch (s) | |
87e11268 | 2168 | const char * s ATTRIBUTE_UNUSED; |
4291d9c8 RS |
2169 | { |
2170 | abort (); | |
2171 | } | |
2172 | ||
2173 | /* Same as `malloc' but report error if no memory available. */ | |
2174 | ||
2778b98d | 2175 | PTR |
4291d9c8 | 2176 | xmalloc (size) |
2778b98d | 2177 | size_t size; |
4291d9c8 | 2178 | { |
2778b98d | 2179 | register PTR value; |
848205e6 MM |
2180 | |
2181 | if (size == 0) | |
2182 | size = 1; | |
2183 | ||
2778b98d | 2184 | value = (PTR) malloc (size); |
848205e6 MM |
2185 | if (value == 0) |
2186 | fatal ("virtual memory exhausted"); | |
2187 | return value; | |
2188 | } | |
2189 | ||
2190 | /* Same as `calloc' but report error if no memory available. */ | |
2191 | ||
2778b98d | 2192 | PTR |
848205e6 | 2193 | xcalloc (size1, size2) |
2778b98d | 2194 | size_t size1, size2; |
848205e6 | 2195 | { |
2778b98d | 2196 | register PTR value; |
848205e6 MM |
2197 | |
2198 | if (size1 == 0 || size2 == 0) | |
2199 | size1 = size2 = 1; | |
2200 | ||
2778b98d | 2201 | value = (PTR) calloc (size1, size2); |
848205e6 | 2202 | if (value == 0) |
4291d9c8 RS |
2203 | fatal ("virtual memory exhausted"); |
2204 | return value; | |
2205 | } | |
2206 | ||
848205e6 | 2207 | |
e9a25f70 JL |
2208 | /* Same as `realloc' but report error if no memory available. |
2209 | Also handle null PTR even if the vendor realloc gets it wrong. */ | |
4291d9c8 | 2210 | |
2778b98d | 2211 | PTR |
4291d9c8 | 2212 | xrealloc (ptr, size) |
2778b98d KG |
2213 | PTR ptr; |
2214 | size_t size; | |
4291d9c8 | 2215 | { |
2778b98d | 2216 | register PTR result; |
848205e6 MM |
2217 | |
2218 | if (size == 0) | |
2219 | size = 1; | |
2220 | ||
2778b98d | 2221 | result = (ptr ? (PTR) realloc (ptr, size) : (PTR) malloc (size)); |
848205e6 | 2222 | |
4291d9c8 RS |
2223 | if (!result) |
2224 | fatal ("virtual memory exhausted"); | |
848205e6 | 2225 | |
4291d9c8 RS |
2226 | return result; |
2227 | } | |
3e386b9e RK |
2228 | |
2229 | /* Same as `strdup' but report error if no memory available. */ | |
2230 | ||
2231 | char * | |
2232 | xstrdup (s) | |
2778b98d | 2233 | register const char *s; |
3e386b9e RK |
2234 | { |
2235 | register char *result = (char *) malloc (strlen (s) + 1); | |
2236 | ||
2237 | if (! result) | |
2238 | fatal ("virtual memory exhausted"); | |
2239 | strcpy (result, s); | |
2240 | return result; | |
2241 | } | |
4291d9c8 RS |
2242 | \f |
2243 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
2244 | if X is a power of 2. Otherwise, returns -1. |
2245 | ||
2246 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
2247 | |
2248 | int | |
37366632 RK |
2249 | exact_log2_wide (x) |
2250 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
2251 | { |
2252 | register int log = 0; | |
2253 | /* Test for 0 or a power of 2. */ | |
2254 | if (x == 0 || x != (x & -x)) | |
2255 | return -1; | |
2256 | while ((x >>= 1) != 0) | |
2257 | log++; | |
2258 | return log; | |
2259 | } | |
2260 | ||
2261 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
2262 | If X is 0, return -1. |
2263 | ||
2264 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
2265 | |
2266 | int | |
37366632 RK |
2267 | floor_log2_wide (x) |
2268 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
2269 | { |
2270 | register int log = -1; | |
2271 | while (x != 0) | |
2272 | log++, | |
2273 | x >>= 1; | |
2274 | return log; | |
2275 | } | |
2276 | ||
3bbfa296 | 2277 | static int float_handler_set; |
4291d9c8 RS |
2278 | int float_handled; |
2279 | jmp_buf float_handler; | |
2280 | ||
3bbfa296 RK |
2281 | /* Signals actually come here. */ |
2282 | ||
2283 | static void | |
2284 | float_signal (signo) | |
2285 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 2286 | int signo ATTRIBUTE_UNUSED; |
3bbfa296 RK |
2287 | { |
2288 | if (float_handled == 0) | |
2289 | abort (); | |
2290 | #if defined (USG) || defined (hpux) | |
2291 | signal (SIGFPE, float_signal); /* re-enable the signal catcher */ | |
2292 | #endif | |
2293 | float_handled = 0; | |
2294 | signal (SIGFPE, float_signal); | |
2295 | longjmp (float_handler, 1); | |
2296 | } | |
2297 | ||
4291d9c8 RS |
2298 | /* Specify where to longjmp to when a floating arithmetic error happens. |
2299 | If HANDLER is 0, it means don't handle the errors any more. */ | |
2300 | ||
2301 | void | |
2302 | set_float_handler (handler) | |
2303 | jmp_buf handler; | |
2304 | { | |
2305 | float_handled = (handler != 0); | |
2306 | if (handler) | |
4c9a05bc | 2307 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
3bbfa296 RK |
2308 | |
2309 | if (float_handled && ! float_handler_set) | |
2310 | { | |
2311 | signal (SIGFPE, float_signal); | |
2312 | float_handler_set = 1; | |
2313 | } | |
4291d9c8 RS |
2314 | } |
2315 | ||
bff4b641 RS |
2316 | /* Specify, in HANDLER, where to longjmp to when a floating arithmetic |
2317 | error happens, pushing the previous specification into OLD_HANDLER. | |
2318 | Return an indication of whether there was a previous handler in effect. */ | |
2319 | ||
2320 | int | |
2321 | push_float_handler (handler, old_handler) | |
dc2b15dc | 2322 | jmp_buf handler, old_handler; |
bff4b641 RS |
2323 | { |
2324 | int was_handled = float_handled; | |
2325 | ||
2326 | float_handled = 1; | |
2327 | if (was_handled) | |
7e2231e7 | 2328 | memcpy ((char *) old_handler, (char *) float_handler, |
4c9a05bc RK |
2329 | sizeof (float_handler)); |
2330 | ||
7e2231e7 | 2331 | memcpy ((char *) float_handler, (char *) handler, sizeof (float_handler)); |
bff4b641 RS |
2332 | return was_handled; |
2333 | } | |
2334 | ||
2335 | /* Restore the previous specification of whether and where to longjmp to | |
2336 | when a floating arithmetic error happens. */ | |
2337 | ||
2338 | void | |
2339 | pop_float_handler (handled, handler) | |
2340 | int handled; | |
2341 | jmp_buf handler; | |
2342 | { | |
2343 | float_handled = handled; | |
2344 | if (handled) | |
4c9a05bc | 2345 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
bff4b641 RS |
2346 | } |
2347 | ||
4291d9c8 RS |
2348 | /* Handler for SIGPIPE. */ |
2349 | ||
2350 | static void | |
2351 | pipe_closed (signo) | |
2352 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 2353 | int signo ATTRIBUTE_UNUSED; |
4291d9c8 RS |
2354 | { |
2355 | fatal ("output pipe has been closed"); | |
2356 | } | |
2357 | ||
2358 | /* Strip off a legitimate source ending from the input string NAME of | |
c62bdc79 | 2359 | length LEN. Rather than having to know the names used by all of |
2290e0ec PB |
2360 | our front ends, we strip off an ending of a period followed by |
2361 | up to five characters. (Java uses ".class".) */ | |
4291d9c8 RS |
2362 | |
2363 | void | |
2364 | strip_off_ending (name, len) | |
2365 | char *name; | |
2366 | int len; | |
2367 | { | |
2290e0ec PB |
2368 | int i; |
2369 | for (i = 2; i < 6 && len > i; i++) | |
2370 | { | |
2371 | if (name[len - i] == '.') | |
2372 | { | |
2373 | name[len - i] = '\0'; | |
2374 | break; | |
2375 | } | |
2376 | } | |
4291d9c8 RS |
2377 | } |
2378 | ||
7dce5088 | 2379 | /* Output a quoted string. */ |
0f41302f | 2380 | |
7dce5088 PE |
2381 | void |
2382 | output_quoted_string (asm_file, string) | |
2383 | FILE *asm_file; | |
87e11268 | 2384 | const char *string; |
7dce5088 | 2385 | { |
e9a25f70 JL |
2386 | #ifdef OUTPUT_QUOTED_STRING |
2387 | OUTPUT_QUOTED_STRING (asm_file, string); | |
2388 | #else | |
7dce5088 PE |
2389 | char c; |
2390 | ||
2391 | putc ('\"', asm_file); | |
2392 | while ((c = *string++) != 0) | |
2393 | { | |
2394 | if (c == '\"' || c == '\\') | |
2395 | putc ('\\', asm_file); | |
2396 | putc (c, asm_file); | |
2397 | } | |
2398 | putc ('\"', asm_file); | |
e9a25f70 | 2399 | #endif |
7dce5088 PE |
2400 | } |
2401 | ||
4291d9c8 RS |
2402 | /* Output a file name in the form wanted by System V. */ |
2403 | ||
2404 | void | |
2405 | output_file_directive (asm_file, input_name) | |
2406 | FILE *asm_file; | |
87e11268 | 2407 | const char *input_name; |
4291d9c8 RS |
2408 | { |
2409 | int len = strlen (input_name); | |
87e11268 | 2410 | const char *na = input_name + len; |
4291d9c8 RS |
2411 | |
2412 | /* NA gets INPUT_NAME sans directory names. */ | |
2413 | while (na > input_name) | |
2414 | { | |
73532e43 JL |
2415 | if (na[-1] == '/') |
2416 | break; | |
2417 | #ifdef DIR_SEPARATOR | |
fed3e408 | 2418 | if (na[-1] == DIR_SEPARATOR) |
4291d9c8 | 2419 | break; |
73532e43 | 2420 | #endif |
4291d9c8 RS |
2421 | na--; |
2422 | } | |
2423 | ||
2424 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
2425 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
2426 | #else | |
2427 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
2428 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
2429 | #else | |
7dce5088 PE |
2430 | fprintf (asm_file, "\t.file\t"); |
2431 | output_quoted_string (asm_file, na); | |
2432 | fputc ('\n', asm_file); | |
4291d9c8 RS |
2433 | #endif |
2434 | #endif | |
2435 | } | |
2436 | \f | |
444bf316 | 2437 | #ifdef ASM_IDENTIFY_LANGUAGE |
0f41302f | 2438 | /* Routine to build language identifier for object file. */ |
d0d4af87 MS |
2439 | static void |
2440 | output_lang_identify (asm_out_file) | |
2441 | FILE *asm_out_file; | |
2442 | { | |
2443 | int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1; | |
2444 | char *s = (char *) alloca (len); | |
2445 | sprintf (s, "__gnu_compiled_%s", lang_identify ()); | |
2446 | ASM_OUTPUT_LABEL (asm_out_file, s); | |
2447 | } | |
444bf316 | 2448 | #endif |
d0d4af87 | 2449 | |
dfe1a916 | 2450 | /* Routine to open a dump file. */ |
032713aa NC |
2451 | static void |
2452 | open_dump_file (suffix, function_name) | |
87e11268 KG |
2453 | const char *suffix; |
2454 | const char *function_name; | |
032713aa NC |
2455 | { |
2456 | char *dumpname; | |
0f41302f | 2457 | |
032713aa NC |
2458 | TIMEVAR |
2459 | (dump_time, | |
2460 | { | |
2461 | dumpname = (char *) xmalloc (strlen (dump_base_name) + strlen (suffix) + 1); | |
2462 | ||
2463 | if (rtl_dump_file != NULL) | |
2464 | fclose (rtl_dump_file); | |
2465 | ||
2466 | strcpy (dumpname, dump_base_name); | |
2467 | strcat (dumpname, suffix); | |
2468 | ||
2469 | rtl_dump_file = fopen (dumpname, "a"); | |
2470 | ||
2471 | if (rtl_dump_file == NULL) | |
2472 | pfatal_with_name (dumpname); | |
2473 | ||
2474 | free (dumpname); | |
2475 | ||
2476 | if (function_name) | |
2477 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", function_name); | |
2478 | }); | |
2479 | ||
2480 | return; | |
2481 | } | |
2482 | ||
2483 | /* Routine to close a dump file. */ | |
2484 | static void | |
2485 | close_dump_file (func, insns) | |
eed90b2c | 2486 | void (*func) PROTO ((FILE *, rtx)); |
032713aa NC |
2487 | rtx insns; |
2488 | { | |
2489 | TIMEVAR | |
2490 | (dump_time, | |
2491 | { | |
2492 | if (func) | |
2493 | func (rtl_dump_file, insns); | |
2494 | ||
2495 | fflush (rtl_dump_file); | |
2496 | fclose (rtl_dump_file); | |
2497 | ||
2498 | rtl_dump_file = NULL; | |
2499 | }); | |
2500 | ||
2501 | return; | |
2502 | } | |
2503 | ||
2504 | /* Routine to dump rtl into a file. */ | |
2505 | static void | |
2506 | dump_rtl (suffix, decl, func, insns) | |
87e11268 | 2507 | const char *suffix; |
032713aa | 2508 | tree decl; |
eed90b2c | 2509 | void (*func) PROTO ((FILE *, rtx)); |
032713aa | 2510 | rtx insns; |
dfe1a916 | 2511 | { |
032713aa NC |
2512 | open_dump_file (suffix, decl_printable_name (decl, 2)); |
2513 | close_dump_file (func, insns); | |
2514 | } | |
2515 | ||
2516 | /* Routine to empty a dump file. */ | |
2517 | static void | |
2518 | clean_dump_file (suffix) | |
87e11268 | 2519 | const char *suffix; |
032713aa | 2520 | { |
6f4d7222 | 2521 | char *dumpname; |
dfe1a916 | 2522 | |
032713aa NC |
2523 | dumpname = (char *) xmalloc (strlen (dump_base_name) + strlen (suffix) + 1); |
2524 | ||
2525 | strcpy (dumpname, dump_base_name); | |
dfe1a916 | 2526 | strcat (dumpname, suffix); |
032713aa NC |
2527 | |
2528 | rtl_dump_file = fopen (dumpname, "w"); | |
2529 | ||
2530 | if (rtl_dump_file == NULL) | |
2531 | pfatal_with_name (dumpname); | |
2532 | ||
2533 | free (dumpname); | |
2534 | ||
2535 | fclose (rtl_dump_file); | |
2536 | rtl_dump_file = NULL; | |
2537 | ||
2538 | return; | |
dfe1a916 DE |
2539 | } |
2540 | ||
032713aa | 2541 | |
4291d9c8 RS |
2542 | /* Compile an entire file of output from cpp, named NAME. |
2543 | Write a file of assembly output and various debugging dumps. */ | |
2544 | ||
2545 | static void | |
2546 | compile_file (name) | |
2547 | char *name; | |
2548 | { | |
2549 | tree globals; | |
2550 | int start_time; | |
4291d9c8 RS |
2551 | |
2552 | int name_specified = name != 0; | |
2553 | ||
2554 | if (dump_base_name == 0) | |
2555 | dump_base_name = name ? name : "gccdump"; | |
4291d9c8 RS |
2556 | |
2557 | parse_time = 0; | |
2558 | varconst_time = 0; | |
2559 | integration_time = 0; | |
2560 | jump_time = 0; | |
2561 | cse_time = 0; | |
7506f491 | 2562 | gcse_time = 0; |
4291d9c8 RS |
2563 | loop_time = 0; |
2564 | cse2_time = 0; | |
0d332add | 2565 | branch_prob_time = 0; |
4291d9c8 RS |
2566 | flow_time = 0; |
2567 | combine_time = 0; | |
8c660648 | 2568 | regmove_time = 0; |
4291d9c8 RS |
2569 | sched_time = 0; |
2570 | local_alloc_time = 0; | |
2571 | global_alloc_time = 0; | |
2572 | sched2_time = 0; | |
bd334356 | 2573 | #ifdef DELAY_SLOTS |
4291d9c8 | 2574 | dbr_sched_time = 0; |
bd334356 | 2575 | #endif |
4291d9c8 RS |
2576 | shorten_branch_time = 0; |
2577 | stack_reg_time = 0; | |
2578 | final_time = 0; | |
2579 | symout_time = 0; | |
2580 | dump_time = 0; | |
2581 | ||
4291d9c8 RS |
2582 | /* Initialize data in various passes. */ |
2583 | ||
2584 | init_obstacks (); | |
2585 | init_tree_codes (); | |
5c60e5c0 | 2586 | name = init_parse (name); |
4291d9c8 RS |
2587 | init_rtl (); |
2588 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL | |
0d332add DE |
2589 | || debug_info_level == DINFO_LEVEL_VERBOSE |
2590 | || flag_test_coverage); | |
7f21d440 | 2591 | init_regs (); |
4291d9c8 RS |
2592 | init_decl_processing (); |
2593 | init_optabs (); | |
2594 | init_stmt (); | |
2595 | init_expmed (); | |
4fa52007 | 2596 | init_expr_once (); |
4291d9c8 RS |
2597 | init_loop (); |
2598 | init_reload (); | |
6e73e666 | 2599 | init_alias_once (); |
4291d9c8 RS |
2600 | |
2601 | if (flag_caller_saves) | |
2602 | init_caller_save (); | |
2603 | ||
f246a305 RS |
2604 | /* If auxiliary info generation is desired, open the output file. |
2605 | This goes in the same directory as the source file--unlike | |
2606 | all the other output files. */ | |
4291d9c8 RS |
2607 | if (flag_gen_aux_info) |
2608 | { | |
4291d9c8 RS |
2609 | aux_info_file = fopen (aux_info_file_name, "w"); |
2610 | if (aux_info_file == 0) | |
2611 | pfatal_with_name (aux_info_file_name); | |
2612 | } | |
2613 | ||
735a0e33 | 2614 | /* Clear the dump files. */ |
4291d9c8 | 2615 | if (rtl_dump) |
032713aa | 2616 | clean_dump_file (".rtl"); |
4291d9c8 | 2617 | if (jump_opt_dump) |
735a0e33 UD |
2618 | { |
2619 | clean_dump_file (".jump"); | |
2620 | if (graph_dump_format != no_graph) | |
2621 | clean_graph_dump_file (dump_base_name, ".jump"); | |
2622 | } | |
e9a25f70 | 2623 | if (addressof_dump) |
735a0e33 UD |
2624 | { |
2625 | clean_dump_file (".addressof"); | |
2626 | if (graph_dump_format != no_graph) | |
2627 | clean_graph_dump_file (dump_base_name, ".addressof"); | |
2628 | } | |
4291d9c8 | 2629 | if (cse_dump) |
735a0e33 UD |
2630 | { |
2631 | clean_dump_file (".cse"); | |
2632 | if (graph_dump_format != no_graph) | |
2633 | clean_graph_dump_file (dump_base_name, ".cse"); | |
2634 | } | |
4291d9c8 | 2635 | if (loop_dump) |
735a0e33 UD |
2636 | { |
2637 | clean_dump_file (".loop"); | |
2638 | if (graph_dump_format != no_graph) | |
2639 | clean_graph_dump_file (dump_base_name, ".loop"); | |
2640 | } | |
4291d9c8 | 2641 | if (cse2_dump) |
735a0e33 UD |
2642 | { |
2643 | clean_dump_file (".cse2"); | |
2644 | if (graph_dump_format != no_graph) | |
2645 | clean_graph_dump_file (dump_base_name, ".cse2"); | |
2646 | } | |
0d332add | 2647 | if (branch_prob_dump) |
735a0e33 UD |
2648 | { |
2649 | clean_dump_file (".bp"); | |
2650 | if (graph_dump_format != no_graph) | |
2651 | clean_graph_dump_file (dump_base_name, ".bp"); | |
2652 | } | |
4291d9c8 | 2653 | if (flow_dump) |
735a0e33 UD |
2654 | { |
2655 | clean_dump_file (".flow"); | |
2656 | if (graph_dump_format != no_graph) | |
2657 | clean_graph_dump_file (dump_base_name, ".flow"); | |
2658 | } | |
4291d9c8 | 2659 | if (combine_dump) |
735a0e33 UD |
2660 | { |
2661 | clean_dump_file (".combine"); | |
2662 | if (graph_dump_format != no_graph) | |
2663 | clean_graph_dump_file (dump_base_name, ".combine"); | |
2664 | } | |
8c660648 | 2665 | if (regmove_dump) |
735a0e33 UD |
2666 | { |
2667 | clean_dump_file (".regmove"); | |
2668 | if (graph_dump_format != no_graph) | |
2669 | clean_graph_dump_file (dump_base_name, ".regmove"); | |
2670 | } | |
4291d9c8 | 2671 | if (sched_dump) |
735a0e33 UD |
2672 | { |
2673 | clean_dump_file (".sched"); | |
2674 | if (graph_dump_format != no_graph) | |
2675 | clean_graph_dump_file (dump_base_name, ".sched"); | |
2676 | } | |
4291d9c8 | 2677 | if (local_reg_dump) |
735a0e33 UD |
2678 | { |
2679 | clean_dump_file (".lreg"); | |
2680 | if (graph_dump_format != no_graph) | |
2681 | clean_graph_dump_file (dump_base_name, ".lreg"); | |
2682 | } | |
4291d9c8 | 2683 | if (global_reg_dump) |
735a0e33 UD |
2684 | { |
2685 | clean_dump_file (".greg"); | |
2686 | if (graph_dump_format != no_graph) | |
2687 | clean_graph_dump_file (dump_base_name, ".greg"); | |
2688 | } | |
4291d9c8 | 2689 | if (sched2_dump) |
735a0e33 UD |
2690 | { |
2691 | clean_dump_file (".sched2"); | |
2692 | if (graph_dump_format != no_graph) | |
2693 | clean_graph_dump_file (dump_base_name, ".sched2"); | |
2694 | } | |
4291d9c8 | 2695 | if (jump2_opt_dump) |
735a0e33 UD |
2696 | { |
2697 | clean_dump_file (".jump2"); | |
2698 | if (graph_dump_format != no_graph) | |
2699 | clean_graph_dump_file (dump_base_name, ".jump2"); | |
2700 | } | |
bd334356 | 2701 | #ifdef DELAY_SLOTS |
4291d9c8 | 2702 | if (dbr_sched_dump) |
735a0e33 UD |
2703 | { |
2704 | clean_dump_file (".dbr"); | |
2705 | if (graph_dump_format != no_graph) | |
2706 | clean_graph_dump_file (dump_base_name, ".dbr"); | |
2707 | } | |
bd334356 | 2708 | #endif |
7506f491 | 2709 | if (gcse_dump) |
735a0e33 UD |
2710 | { |
2711 | clean_dump_file (".gcse"); | |
2712 | if (graph_dump_format != no_graph) | |
2713 | clean_graph_dump_file (dump_base_name, ".gcse"); | |
2714 | } | |
4291d9c8 | 2715 | #ifdef STACK_REGS |
4291d9c8 | 2716 | if (stack_reg_dump) |
735a0e33 UD |
2717 | { |
2718 | clean_dump_file (".stack"); | |
2719 | if (graph_dump_format != no_graph) | |
2720 | clean_graph_dump_file (dump_base_name, ".stack"); | |
2721 | } | |
032713aa NC |
2722 | #endif |
2723 | #ifdef MACHINE_DEPENDENT_REORG | |
2724 | if (mach_dep_reorg_dump) | |
735a0e33 UD |
2725 | { |
2726 | clean_dump_file (".mach"); | |
2727 | if (graph_dump_format != no_graph) | |
2728 | clean_graph_dump_file (dump_base_name, ".mach"); | |
2729 | } | |
4291d9c8 RS |
2730 | #endif |
2731 | ||
2732 | /* Open assembler code output file. */ | |
2733 | ||
1fe65c00 PB |
2734 | if (flag_syntax_only) |
2735 | asm_out_file = NULL; | |
4291d9c8 RS |
2736 | else |
2737 | { | |
1fe65c00 | 2738 | if (! name_specified && asm_file_name == 0) |
4291d9c8 RS |
2739 | asm_out_file = stdout; |
2740 | else | |
1fe65c00 PB |
2741 | { |
2742 | int len = strlen (dump_base_name); | |
2743 | register char *dumpname = (char *) xmalloc (len + 6); | |
2744 | strcpy (dumpname, dump_base_name); | |
2745 | strip_off_ending (dumpname, len); | |
2746 | strcat (dumpname, ".s"); | |
2747 | if (asm_file_name == 0) | |
2748 | { | |
2749 | asm_file_name = (char *) xmalloc (strlen (dumpname) + 1); | |
2750 | strcpy (asm_file_name, dumpname); | |
2751 | } | |
2752 | if (!strcmp (asm_file_name, "-")) | |
2753 | asm_out_file = stdout; | |
2754 | else | |
2755 | asm_out_file = fopen (asm_file_name, "w"); | |
2756 | if (asm_out_file == 0) | |
2757 | pfatal_with_name (asm_file_name); | |
2758 | } | |
4291d9c8 | 2759 | |
f246a305 | 2760 | #ifdef IO_BUFFER_SIZE |
1fe65c00 PB |
2761 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
2762 | _IOFBF, IO_BUFFER_SIZE); | |
f246a305 | 2763 | #endif |
1fe65c00 | 2764 | } |
f246a305 | 2765 | |
4291d9c8 RS |
2766 | input_filename = name; |
2767 | ||
18736654 RK |
2768 | /* Put an entry on the input file stack for the main input file. */ |
2769 | input_file_stack | |
2770 | = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2771 | input_file_stack->next = 0; | |
2772 | input_file_stack->name = input_filename; | |
2773 | ||
4291d9c8 RS |
2774 | /* Perform language-specific initialization. |
2775 | This may set main_input_filename. */ | |
2776 | lang_init (); | |
2777 | ||
2778 | /* If the input doesn't start with a #line, use the input name | |
2779 | as the official input file name. */ | |
2780 | if (main_input_filename == 0) | |
2781 | main_input_filename = name; | |
2782 | ||
1fe65c00 PB |
2783 | if (flag_syntax_only) |
2784 | { | |
2785 | write_symbols = NO_DEBUG; | |
2786 | profile_flag = 0; | |
2787 | profile_block_flag = 0; | |
2788 | } | |
2789 | else | |
2790 | { | |
2791 | ASM_FILE_START (asm_out_file); | |
3d5cdd42 DE |
2792 | |
2793 | #ifdef ASM_COMMENT_START | |
1fe65c00 PB |
2794 | if (flag_verbose_asm) |
2795 | { | |
2796 | /* Print the list of options in effect. */ | |
2797 | print_version (asm_out_file, ASM_COMMENT_START); | |
2798 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
3d5cdd42 | 2799 | ASM_COMMENT_START, " ", "\n"); |
1fe65c00 PB |
2800 | /* Add a blank line here so it appears in assembler output but not |
2801 | screen output. */ | |
2802 | fprintf (asm_out_file, "\n"); | |
2803 | } | |
b93a436e | 2804 | #endif |
4291d9c8 | 2805 | |
1fe65c00 | 2806 | /* Output something to inform GDB that this compilation was by GCC. */ |
4291d9c8 | 2807 | #ifndef ASM_IDENTIFY_GCC |
1fe65c00 | 2808 | fprintf (asm_out_file, "gcc2_compiled.:\n"); |
4291d9c8 | 2809 | #else |
1fe65c00 | 2810 | ASM_IDENTIFY_GCC (asm_out_file); |
4291d9c8 | 2811 | #endif |
d0d4af87 | 2812 | |
0f41302f | 2813 | /* Output something to identify which front-end produced this file. */ |
d0d4af87 | 2814 | #ifdef ASM_IDENTIFY_LANGUAGE |
1fe65c00 | 2815 | ASM_IDENTIFY_LANGUAGE (asm_out_file); |
d0d4af87 | 2816 | #endif |
1fe65c00 | 2817 | } /* ! flag_syntax_only */ |
d0d4af87 | 2818 | |
cf440348 JL |
2819 | #ifndef ASM_OUTPUT_SECTION_NAME |
2820 | if (flag_function_sections) | |
2821 | { | |
2822 | warning ("-ffunction-sections not supported for this target."); | |
2823 | flag_function_sections = 0; | |
2824 | } | |
257441db CM |
2825 | if (flag_data_sections) |
2826 | { | |
2827 | warning ("-fdata-sections not supported for this target."); | |
2828 | flag_data_sections = 0; | |
2829 | } | |
cf440348 JL |
2830 | #endif |
2831 | ||
2832 | if (flag_function_sections | |
2833 | && (profile_flag || profile_block_flag)) | |
2834 | { | |
2835 | warning ("-ffunction-sections disabled; it makes profiling impossible."); | |
2836 | flag_function_sections = 0; | |
2837 | } | |
2838 | ||
2839 | if (flag_function_sections && write_symbols != NO_DEBUG) | |
2840 | warning ("-ffunction-sections may affect debugging on some targets."); | |
2841 | ||
b93a436e JL |
2842 | /* ??? Note: There used to be a conditional here |
2843 | to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined. | |
2844 | This was to guarantee separation between gcc_compiled. and | |
2845 | the first function, for the sake of dbx on Suns. | |
2846 | However, having the extra zero here confused the Emacs | |
2847 | code for unexec, and might confuse other programs too. | |
2848 | Therefore, I took out that change. | |
2849 | In future versions we should find another way to solve | |
2850 | that dbx problem. -- rms, 23 May 93. */ | |
ca695ac9 | 2851 | |
b93a436e JL |
2852 | /* Don't let the first function fall at the same address |
2853 | as gcc_compiled., if profiling. */ | |
2854 | if (profile_flag || profile_block_flag) | |
e5e809f4 JL |
2855 | { |
2856 | /* It's best if we can write a nop here since some | |
2857 | assemblers don't tolerate zeros in the text section. */ | |
2858 | if (insn_template[CODE_FOR_nop] != 0) | |
2859 | output_asm_insn (insn_template[CODE_FOR_nop], NULL_PTR); | |
2860 | else | |
2861 | assemble_zeros (UNITS_PER_WORD); | |
2862 | } | |
4291d9c8 RS |
2863 | |
2864 | /* If dbx symbol table desired, initialize writing it | |
2865 | and output the predefined types. */ | |
f246a305 RS |
2866 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2867 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2868 | TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename, |
2869 | getdecls ())); | |
2870 | #endif | |
2871 | #ifdef SDB_DEBUGGING_INFO | |
2872 | if (write_symbols == SDB_DEBUG) | |
2873 | TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename, | |
2874 | getdecls ())); | |
2875 | #endif | |
2876 | #ifdef DWARF_DEBUGGING_INFO | |
2877 | if (write_symbols == DWARF_DEBUG) | |
2878 | TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename)); | |
2879 | #endif | |
0021b564 JM |
2880 | #ifdef DWARF2_UNWIND_INFO |
2881 | if (dwarf2out_do_frame ()) | |
2882 | dwarf2out_frame_init (); | |
2883 | #endif | |
9a666dda JM |
2884 | #ifdef DWARF2_DEBUGGING_INFO |
2885 | if (write_symbols == DWARF2_DEBUG) | |
2886 | TIMEVAR (symout_time, dwarf2out_init (asm_out_file, main_input_filename)); | |
2887 | #endif | |
4291d9c8 RS |
2888 | |
2889 | /* Initialize yet another pass. */ | |
2890 | ||
b93a436e | 2891 | init_final (main_input_filename); |
0d332add | 2892 | init_branch_prob (dump_base_name); |
4291d9c8 RS |
2893 | |
2894 | start_time = get_run_time (); | |
2895 | ||
2896 | /* Call the parser, which parses the entire file | |
2897 | (calling rest_of_compilation for each function). */ | |
2898 | ||
2899 | if (yyparse () != 0) | |
453dfc78 JW |
2900 | { |
2901 | if (errorcount == 0) | |
2902 | fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)"); | |
2903 | ||
2904 | /* In case there were missing closebraces, | |
2905 | get us back to the global binding level. */ | |
2906 | while (! global_bindings_p ()) | |
2907 | poplevel (0, 0, 0); | |
2908 | } | |
4291d9c8 RS |
2909 | |
2910 | /* Compilation is now finished except for writing | |
2911 | what's left of the symbol table output. */ | |
2912 | ||
2913 | parse_time += get_run_time () - start_time; | |
2914 | ||
2915 | parse_time -= integration_time; | |
2916 | parse_time -= varconst_time; | |
2917 | ||
1fe65c00 PB |
2918 | if (flag_syntax_only) |
2919 | goto finish_syntax; | |
2920 | ||
4291d9c8 RS |
2921 | globals = getdecls (); |
2922 | ||
2923 | /* Really define vars that have had only a tentative definition. | |
2924 | Really output inline functions that must actually be callable | |
2925 | and have not been output so far. */ | |
2926 | ||
2927 | { | |
2928 | int len = list_length (globals); | |
2929 | tree *vec = (tree *) alloca (sizeof (tree) * len); | |
2930 | int i; | |
2931 | tree decl; | |
2b6c54d6 | 2932 | int reconsider = 1; |
4291d9c8 RS |
2933 | |
2934 | /* Process the decls in reverse order--earliest first. | |
2935 | Put them into VEC from back to front, then take out from front. */ | |
2936 | ||
2937 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
2938 | vec[len - i - 1] = decl; | |
2939 | ||
2940 | for (i = 0; i < len; i++) | |
2941 | { | |
2942 | decl = vec[i]; | |
07af9d16 JM |
2943 | |
2944 | /* We're not deferring this any longer. */ | |
2945 | DECL_DEFER_OUTPUT (decl) = 0; | |
2946 | ||
488b1f4f RS |
2947 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 |
2948 | && incomplete_decl_finalize_hook != 0) | |
2b599527 | 2949 | (*incomplete_decl_finalize_hook) (decl); |
2b6c54d6 | 2950 | } |
2b599527 | 2951 | |
2b6c54d6 JM |
2952 | /* Now emit any global variables or functions that we have been putting |
2953 | off. We need to loop in case one of the things emitted here | |
2954 | references another one which comes earlier in the list. */ | |
2955 | while (reconsider) | |
2956 | { | |
2957 | reconsider = 0; | |
2958 | for (i = 0; i < len; i++) | |
4291d9c8 | 2959 | { |
2b6c54d6 JM |
2960 | decl = vec[i]; |
2961 | ||
2962 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
2963 | continue; | |
2964 | ||
6b2bd61e PB |
2965 | /* Don't write out static consts, unless we still need them. |
2966 | ||
fbe912dd BK |
2967 | We also keep static consts if not optimizing (for debugging), |
2968 | unless the user specified -fno-keep-static-consts. | |
6b2bd61e PB |
2969 | ??? They might be better written into the debug information. |
2970 | This is possible when using DWARF. | |
2971 | ||
2972 | A language processor that wants static constants to be always | |
2973 | written out (even if it is not used) is responsible for | |
2974 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
2975 | calls rest_of_decl_compilation from finish_decl. | |
2976 | One motivation for this is that is conventional in some | |
2977 | environments to write things like: | |
2978 | static const char rcsid[] = "... version string ..."; | |
2979 | intending to force the string to be in the executable. | |
2980 | ||
2981 | A language processor that would prefer to have unneeded | |
2982 | static constants "optimized away" would just defer writing | |
2983 | them out until here. E.g. C++ does this, because static | |
2984 | constants are often defined in header files. | |
2985 | ||
2986 | ??? A tempting alternative (for both C and C++) would be | |
2987 | to force a constant to be written if and only if it is | |
0f41302f | 2988 | defined in a main file, as opposed to an include file. */ |
6b2bd61e | 2989 | |
2b6c54d6 JM |
2990 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) |
2991 | && (! TREE_READONLY (decl) | |
2992 | || TREE_PUBLIC (decl) | |
fbe912dd | 2993 | || (!optimize && flag_keep_static_consts) |
2b6c54d6 JM |
2994 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
2995 | { | |
2996 | reconsider = 1; | |
2997 | rest_of_decl_compilation (decl, NULL_PTR, 1, 1); | |
2998 | } | |
2999 | ||
3000 | if (TREE_CODE (decl) == FUNCTION_DECL | |
3001 | && DECL_INITIAL (decl) != 0 | |
3002 | && DECL_SAVED_INSNS (decl) != 0 | |
3003 | && (flag_keep_inline_functions | |
2f8844a8 | 3004 | || TREE_PUBLIC (decl) |
2b6c54d6 JM |
3005 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
3006 | { | |
3007 | reconsider = 1; | |
3008 | temporary_allocation (); | |
3009 | output_inline_function (decl); | |
3010 | permanent_allocation (1); | |
3011 | } | |
4291d9c8 | 3012 | } |
2b6c54d6 | 3013 | } |
4291d9c8 | 3014 | |
2668793e JL |
3015 | /* This must occur after the loop to output deferred functions. Else |
3016 | the profiler initializer would not be emitted if all the functions | |
3017 | in this compilation unit were deferred. | |
3018 | ||
3019 | output_func_start_profiler can not cause any additional functions or | |
3020 | data to need to be output, so it need not be in the deferred function | |
3021 | loop above. */ | |
3022 | output_func_start_profiler (); | |
3023 | ||
3d195391 MS |
3024 | /* Now that all possible functions have been output, we can dump |
3025 | the exception table. */ | |
3026 | ||
0021b564 | 3027 | output_exception_table (); |
3d195391 | 3028 | |
2b6c54d6 JM |
3029 | for (i = 0; i < len; i++) |
3030 | { | |
3031 | decl = vec[i]; | |
3032 | ||
3033 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
3034 | && ! TREE_ASM_WRITTEN (decl)) | |
3035 | /* Cancel the RTL for this decl so that, if debugging info | |
3036 | output for global variables is still to come, | |
3037 | this one will be omitted. */ | |
3038 | DECL_RTL (decl) = NULL; | |
4291d9c8 | 3039 | |
ac266247 RS |
3040 | /* Warn about any function |
3041 | declared static but not defined. | |
3042 | We don't warn about variables, | |
3043 | because many programs have static variables | |
3044 | that exist only to get some text into the object file. */ | |
8c461ea1 JM |
3045 | if (TREE_CODE (decl) == FUNCTION_DECL |
3046 | && (warn_unused | |
3047 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
4291d9c8 | 3048 | && DECL_INITIAL (decl) == 0 |
216d5cdd | 3049 | && DECL_EXTERNAL (decl) |
d1b01681 | 3050 | && ! DECL_ARTIFICIAL (decl) |
4291d9c8 | 3051 | && ! TREE_PUBLIC (decl)) |
7d429c41 | 3052 | { |
1f288b3f JM |
3053 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
3054 | pedwarn_with_decl (decl, | |
3055 | "`%s' used but never defined"); | |
3056 | else | |
3057 | warning_with_decl (decl, | |
3058 | "`%s' declared `static' but never defined"); | |
7d429c41 RS |
3059 | /* This symbol is effectively an "extern" declaration now. */ |
3060 | TREE_PUBLIC (decl) = 1; | |
3061 | assemble_external (decl); | |
7d429c41 | 3062 | } |
8c461ea1 | 3063 | |
4291d9c8 | 3064 | /* Warn about static fns or vars defined but not used, |
7062b881 PB |
3065 | but not about inline functions or static consts |
3066 | since defining those in header files is normal practice. */ | |
4291d9c8 | 3067 | if (warn_unused |
7062b881 PB |
3068 | && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) |
3069 | || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
0c20aabf | 3070 | && ! DECL_IN_SYSTEM_HEADER (decl) |
216d5cdd | 3071 | && ! DECL_EXTERNAL (decl) |
4291d9c8 RS |
3072 | && ! TREE_PUBLIC (decl) |
3073 | && ! TREE_USED (decl) | |
f843649d | 3074 | && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl)) |
4291d9c8 RS |
3075 | /* The TREE_USED bit for file-scope decls |
3076 | is kept in the identifier, to handle multiple | |
3077 | external decls in different scopes. */ | |
3078 | && ! TREE_USED (DECL_NAME (decl))) | |
3079 | warning_with_decl (decl, "`%s' defined but not used"); | |
3080 | ||
3081 | #ifdef SDB_DEBUGGING_INFO | |
3082 | /* The COFF linker can move initialized global vars to the end. | |
3083 | And that can screw up the symbol ordering. | |
3084 | By putting the symbols in that order to begin with, | |
3085 | we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */ | |
3086 | if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL | |
3087 | && TREE_PUBLIC (decl) && DECL_INITIAL (decl) | |
7efad3f7 | 3088 | && ! DECL_EXTERNAL (decl) |
4291d9c8 RS |
3089 | && DECL_RTL (decl) != 0) |
3090 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
3091 | ||
3092 | /* Output COFF information for non-global | |
0f41302f | 3093 | file-scope initialized variables. */ |
4291d9c8 RS |
3094 | if (write_symbols == SDB_DEBUG |
3095 | && TREE_CODE (decl) == VAR_DECL | |
3096 | && DECL_INITIAL (decl) | |
7efad3f7 | 3097 | && ! DECL_EXTERNAL (decl) |
4291d9c8 RS |
3098 | && DECL_RTL (decl) != 0 |
3099 | && GET_CODE (DECL_RTL (decl)) == MEM) | |
3100 | TIMEVAR (symout_time, sdbout_toplevel_data (decl)); | |
3101 | #endif /* SDB_DEBUGGING_INFO */ | |
3102 | #ifdef DWARF_DEBUGGING_INFO | |
6dc42e49 | 3103 | /* Output DWARF information for file-scope tentative data object |
4291d9c8 RS |
3104 | declarations, file-scope (extern) function declarations (which |
3105 | had no corresponding body) and file-scope tagged type declarations | |
3106 | and definitions which have not yet been forced out. */ | |
3107 | ||
3108 | if (write_symbols == DWARF_DEBUG | |
3109 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
3110 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1)); | |
9a666dda JM |
3111 | #endif |
3112 | #ifdef DWARF2_DEBUGGING_INFO | |
3113 | /* Output DWARF2 information for file-scope tentative data object | |
3114 | declarations, file-scope (extern) function declarations (which | |
3115 | had no corresponding body) and file-scope tagged type declarations | |
3116 | and definitions which have not yet been forced out. */ | |
3117 | ||
3118 | if (write_symbols == DWARF2_DEBUG | |
3119 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
88dad228 | 3120 | TIMEVAR (symout_time, dwarf2out_decl (decl)); |
4291d9c8 RS |
3121 | #endif |
3122 | } | |
3123 | } | |
3124 | ||
4b8af8d9 JM |
3125 | /* Write out any pending weak symbol declarations. */ |
3126 | ||
3127 | weak_finish (); | |
3128 | ||
4291d9c8 | 3129 | /* Do dbx symbols */ |
f246a305 RS |
3130 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
3131 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
3132 | TIMEVAR (symout_time, |
3133 | { | |
3134 | dbxout_finish (asm_out_file, main_input_filename); | |
3135 | }); | |
3136 | #endif | |
3137 | ||
3138 | #ifdef DWARF_DEBUGGING_INFO | |
3139 | if (write_symbols == DWARF_DEBUG) | |
3140 | TIMEVAR (symout_time, | |
3141 | { | |
3142 | dwarfout_finish (); | |
3143 | }); | |
3144 | #endif | |
3145 | ||
0021b564 JM |
3146 | #ifdef DWARF2_UNWIND_INFO |
3147 | if (dwarf2out_do_frame ()) | |
3148 | dwarf2out_frame_finish (); | |
3149 | #endif | |
3150 | ||
9a666dda JM |
3151 | #ifdef DWARF2_DEBUGGING_INFO |
3152 | if (write_symbols == DWARF2_DEBUG) | |
3153 | TIMEVAR (symout_time, | |
3154 | { | |
3155 | dwarf2out_finish (); | |
3156 | }); | |
3157 | #endif | |
3158 | ||
4291d9c8 RS |
3159 | /* Output some stuff at end of file if nec. */ |
3160 | ||
b93a436e | 3161 | end_final (dump_base_name); |
032713aa NC |
3162 | |
3163 | if (branch_prob_dump) | |
3164 | open_dump_file (".bp", NULL); | |
3165 | ||
3166 | TIMEVAR (dump_time, end_branch_prob (rtl_dump_file)); | |
3167 | ||
3168 | if (branch_prob_dump) | |
3169 | close_dump_file (NULL, NULL_RTX); | |
3170 | ||
4291d9c8 | 3171 | #ifdef ASM_FILE_END |
b93a436e | 3172 | ASM_FILE_END (asm_out_file); |
4291d9c8 RS |
3173 | #endif |
3174 | ||
ed396e68 | 3175 | |
4291d9c8 | 3176 | /* Language-specific end of compilation actions. */ |
1fe65c00 | 3177 | finish_syntax: |
4291d9c8 RS |
3178 | lang_finish (); |
3179 | ||
3180 | /* Close the dump files. */ | |
3181 | ||
3182 | if (flag_gen_aux_info) | |
3183 | { | |
3184 | fclose (aux_info_file); | |
3185 | if (errorcount) | |
3186 | unlink (aux_info_file_name); | |
3187 | } | |
3188 | ||
4291d9c8 RS |
3189 | if (combine_dump) |
3190 | { | |
032713aa NC |
3191 | open_dump_file (".combine", NULL); |
3192 | TIMEVAR (dump_time, dump_combine_total_stats (rtl_dump_file)); | |
3193 | close_dump_file (NULL, NULL_RTX); | |
4291d9c8 RS |
3194 | } |
3195 | ||
4291d9c8 RS |
3196 | /* Close non-debugging input and output files. Take special care to note |
3197 | whether fclose returns an error, since the pages might still be on the | |
3198 | buffer chain while the file is open. */ | |
3199 | ||
e3d1fd32 | 3200 | finish_parse (); |
e56e519d | 3201 | |
1fe65c00 PB |
3202 | if (! flag_syntax_only |
3203 | && (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)) | |
4291d9c8 RS |
3204 | fatal_io_error (asm_file_name); |
3205 | ||
735a0e33 UD |
3206 | /* Do whatever is necessary to finish printing the graphs. */ |
3207 | if (graph_dump_format != no_graph) | |
3208 | { | |
3209 | if (jump_opt_dump) | |
3210 | finish_graph_dump_file (dump_base_name, ".jump"); | |
3211 | if (addressof_dump) | |
3212 | finish_graph_dump_file (dump_base_name, ".addressof"); | |
3213 | if (cse_dump) | |
3214 | finish_graph_dump_file (dump_base_name, ".cse"); | |
3215 | if (loop_dump) | |
3216 | finish_graph_dump_file (dump_base_name, ".loop"); | |
3217 | if (cse2_dump) | |
3218 | finish_graph_dump_file (dump_base_name, ".cse2"); | |
3219 | if (branch_prob_dump) | |
3220 | finish_graph_dump_file (dump_base_name, ".bp"); | |
3221 | if (flow_dump) | |
3222 | finish_graph_dump_file (dump_base_name, ".flow"); | |
3223 | if (combine_dump) | |
3224 | finish_graph_dump_file (dump_base_name, ".combine"); | |
3225 | if (regmove_dump) | |
3226 | finish_graph_dump_file (dump_base_name, ".regmove"); | |
3227 | if (sched_dump) | |
3228 | finish_graph_dump_file (dump_base_name, ".sched"); | |
3229 | if (local_reg_dump) | |
3230 | finish_graph_dump_file (dump_base_name, ".lreg"); | |
3231 | if (global_reg_dump) | |
3232 | finish_graph_dump_file (dump_base_name, ".greg"); | |
3233 | if (sched2_dump) | |
3234 | finish_graph_dump_file (dump_base_name, ".sched2"); | |
3235 | if (jump2_opt_dump) | |
3236 | finish_graph_dump_file (dump_base_name, ".jump2"); | |
3237 | #ifdef DELAY_SLOTS | |
3238 | if (dbr_sched_dump) | |
3239 | finish_graph_dump_file (dump_base_name, ".dbr"); | |
3240 | #endif | |
3241 | if (gcse_dump) | |
3242 | finish_graph_dump_file (dump_base_name, ".gcse"); | |
3243 | #ifdef STACK_REGS | |
3244 | if (stack_reg_dump) | |
3245 | finish_graph_dump_file (dump_base_name, ".stack"); | |
3246 | #endif | |
3247 | #ifdef MACHINE_DEPENDENT_REORG | |
3248 | if (mach_dep_reorg_dump) | |
3249 | finish_graph_dump_file (dump_base_name, ".mach"); | |
3250 | #endif | |
3251 | } | |
3252 | ||
ed396e68 BS |
3253 | /* Free up memory for the benefit of leak detectors. */ |
3254 | free_reg_info (); | |
3255 | ||
4291d9c8 RS |
3256 | /* Print the times. */ |
3257 | ||
3258 | if (! quiet_flag) | |
3259 | { | |
3260 | fprintf (stderr,"\n"); | |
3261 | print_time ("parse", parse_time); | |
ca695ac9 | 3262 | |
b93a436e JL |
3263 | print_time ("integration", integration_time); |
3264 | print_time ("jump", jump_time); | |
3265 | print_time ("cse", cse_time); | |
7506f491 | 3266 | print_time ("gcse", gcse_time); |
b93a436e JL |
3267 | print_time ("loop", loop_time); |
3268 | print_time ("cse2", cse2_time); | |
3269 | print_time ("branch-prob", branch_prob_time); | |
3270 | print_time ("flow", flow_time); | |
3271 | print_time ("combine", combine_time); | |
3272 | print_time ("regmove", regmove_time); | |
3273 | print_time ("sched", sched_time); | |
3274 | print_time ("local-alloc", local_alloc_time); | |
3275 | print_time ("global-alloc", global_alloc_time); | |
3276 | print_time ("sched2", sched2_time); | |
bd334356 | 3277 | #ifdef DELAY_SLOTS |
b93a436e | 3278 | print_time ("dbranch", dbr_sched_time); |
bd334356 | 3279 | #endif |
b93a436e JL |
3280 | print_time ("shorten-branch", shorten_branch_time); |
3281 | print_time ("stack-reg", stack_reg_time); | |
3282 | print_time ("final", final_time); | |
3283 | print_time ("varconst", varconst_time); | |
3284 | print_time ("symout", symout_time); | |
3285 | print_time ("dump", dump_time); | |
4291d9c8 RS |
3286 | } |
3287 | } | |
3288 | \f | |
3289 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
3290 | and TYPE_DECL nodes. | |
3291 | ||
3292 | This does nothing for local (non-static) variables. | |
3293 | Otherwise, it sets up the RTL and outputs any assembler code | |
3294 | (label definition, storage allocation and initialization). | |
3295 | ||
3296 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
3297 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
3298 | if this declaration is not within a function. */ | |
3299 | ||
3300 | void | |
3301 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
3302 | tree decl; | |
87e11268 | 3303 | const char *asmspec; |
4291d9c8 RS |
3304 | int top_level; |
3305 | int at_end; | |
3306 | { | |
3307 | /* Declarations of variables, and of functions defined elsewhere. */ | |
3308 | ||
928eb380 RS |
3309 | /* The most obvious approach, to put an #ifndef around where |
3310 | this macro is used, doesn't work since it's inside a macro call. */ | |
3311 | #ifndef ASM_FINISH_DECLARE_OBJECT | |
3312 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) | |
3313 | #endif | |
3314 | ||
4291d9c8 RS |
3315 | /* Forward declarations for nested functions are not "external", |
3316 | but we need to treat them as if they were. */ | |
216d5cdd | 3317 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 RS |
3318 | || TREE_CODE (decl) == FUNCTION_DECL) |
3319 | TIMEVAR (varconst_time, | |
3320 | { | |
3321 | make_decl_rtl (decl, asmspec, top_level); | |
9a9a9643 RS |
3322 | /* Initialized extern variable exists to be replaced |
3323 | with its value, or represents something that will be | |
3324 | output in another file. */ | |
6dbf678a | 3325 | if (! (TREE_CODE (decl) == VAR_DECL |
9a9a9643 RS |
3326 | && DECL_EXTERNAL (decl) && TREE_READONLY (decl) |
3327 | && DECL_INITIAL (decl) != 0 | |
5b272d50 | 3328 | && DECL_INITIAL (decl) != error_mark_node)) |
6dbf678a RS |
3329 | /* Don't output anything |
3330 | when a tentative file-scope definition is seen. | |
3331 | But at end of compilation, do output code for them. */ | |
3332 | if (! (! at_end && top_level | |
3333 | && (DECL_INITIAL (decl) == 0 | |
9a9a9643 | 3334 | || DECL_INITIAL (decl) == error_mark_node))) |
8380e2f2 | 3335 | assemble_variable (decl, top_level, at_end, 0); |
b93a436e | 3336 | if (decl == last_assemble_variable_decl) |
5e10b3cc RS |
3337 | { |
3338 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
3339 | top_level, at_end); | |
3340 | } | |
4291d9c8 | 3341 | }); |
216d5cdd | 3342 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
3343 | { |
3344 | if (decode_reg_name (asmspec) >= 0) | |
3345 | { | |
3346 | DECL_RTL (decl) = 0; | |
3347 | make_decl_rtl (decl, asmspec, top_level); | |
3348 | } | |
3349 | else | |
3350 | error ("invalid register name `%s' for register variable", asmspec); | |
3351 | } | |
f246a305 RS |
3352 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
3353 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
3354 | && TREE_CODE (decl) == TYPE_DECL) | |
4291d9c8 RS |
3355 | TIMEVAR (symout_time, dbxout_symbol (decl, 0)); |
3356 | #endif | |
3357 | #ifdef SDB_DEBUGGING_INFO | |
3358 | else if (write_symbols == SDB_DEBUG && top_level | |
3359 | && TREE_CODE (decl) == TYPE_DECL) | |
3360 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
3361 | #endif | |
3362 | } | |
3363 | ||
3364 | /* Called after finishing a record, union or enumeral type. */ | |
3365 | ||
3366 | void | |
3367 | rest_of_type_compilation (type, toplev) | |
114791ea | 3368 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO) |
4291d9c8 RS |
3369 | tree type; |
3370 | int toplev; | |
114791ea KG |
3371 | #else |
3372 | tree type ATTRIBUTE_UNUSED; | |
3373 | int toplev ATTRIBUTE_UNUSED; | |
3374 | #endif | |
4291d9c8 | 3375 | { |
f246a305 RS |
3376 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
3377 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
3378 | TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev)); |
3379 | #endif | |
3380 | #ifdef SDB_DEBUGGING_INFO | |
3381 | if (write_symbols == SDB_DEBUG) | |
3382 | TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev)); | |
3383 | #endif | |
3384 | } | |
3385 | ||
3386 | /* This is called from finish_function (within yyparse) | |
3387 | after each top-level definition is parsed. | |
3388 | It is supposed to compile that function or variable | |
3389 | and output the assembler code for it. | |
3390 | After we return, the tree storage is freed. */ | |
3391 | ||
3392 | void | |
3393 | rest_of_compilation (decl) | |
3394 | tree decl; | |
3395 | { | |
3396 | register rtx insns; | |
3397 | int start_time = get_run_time (); | |
3398 | int tem; | |
3399 | /* Nonzero if we have saved the original DECL_INITIAL of the function, | |
3400 | to be restored after we finish compiling the function | |
3401 | (for use when compiling inline calls to this function). */ | |
3402 | tree saved_block_tree = 0; | |
8a958768 RS |
3403 | /* Likewise, for DECL_ARGUMENTS. */ |
3404 | tree saved_arguments = 0; | |
ab40ad2b | 3405 | int failure = 0; |
4291d9c8 RS |
3406 | |
3407 | /* If we are reconsidering an inline function | |
3408 | at the end of compilation, skip the stuff for making it inline. */ | |
3409 | ||
3410 | if (DECL_SAVED_INSNS (decl) == 0) | |
3411 | { | |
956d6950 | 3412 | int inlinable = 0; |
4291d9c8 RS |
3413 | char *lose; |
3414 | ||
3415 | /* If requested, consider whether to make this function inline. */ | |
9deaf1b1 | 3416 | if (DECL_INLINE (decl) || flag_inline_functions) |
4291d9c8 RS |
3417 | TIMEVAR (integration_time, |
3418 | { | |
3419 | lose = function_cannot_inline_p (decl); | |
caa0eccd | 3420 | if (lose || ! optimize) |
4291d9c8 | 3421 | { |
9deaf1b1 | 3422 | if (warn_inline && DECL_INLINE (decl)) |
4291d9c8 | 3423 | warning_with_decl (decl, lose); |
9548c538 | 3424 | DECL_ABSTRACT_ORIGIN (decl) = 0; |
46dbb914 RS |
3425 | /* Don't really compile an extern inline function. |
3426 | If we can't make it inline, pretend | |
3427 | it was only declared. */ | |
3428 | if (DECL_EXTERNAL (decl)) | |
27937f46 RS |
3429 | { |
3430 | DECL_INITIAL (decl) = 0; | |
3431 | goto exit_rest_of_compilation; | |
3432 | } | |
4291d9c8 RS |
3433 | } |
3434 | else | |
9deaf1b1 RK |
3435 | /* ??? Note that this has the effect of making it look |
3436 | like "inline" was specified for a function if we choose | |
3437 | to inline it. This isn't quite right, but it's | |
3438 | probably not worth the trouble to fix. */ | |
956d6950 | 3439 | inlinable = DECL_INLINE (decl) = 1; |
4291d9c8 RS |
3440 | }); |
3441 | ||
3442 | insns = get_insns (); | |
3443 | ||
3444 | /* Dump the rtl code if we are dumping rtl. */ | |
3445 | ||
3446 | if (rtl_dump) | |
032713aa NC |
3447 | { |
3448 | open_dump_file (".rtl", decl_printable_name (decl, 2)); | |
3449 | ||
3450 | if (DECL_SAVED_INSNS (decl)) | |
3451 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
3452 | ||
3453 | close_dump_file (print_rtl, insns); | |
3454 | } | |
4291d9c8 | 3455 | |
c0da11c4 JM |
3456 | /* If we can, defer compiling inlines until EOF. |
3457 | save_for_inline_copying can be extremely expensive. */ | |
956d6950 | 3458 | if (inlinable && ! decl_function_context (decl)) |
c0da11c4 JM |
3459 | DECL_DEFER_OUTPUT (decl) = 1; |
3460 | ||
4291d9c8 RS |
3461 | /* If function is inline, and we don't yet know whether to |
3462 | compile it by itself, defer decision till end of compilation. | |
3463 | finish_compilation will call rest_of_compilation again | |
16411ea6 | 3464 | for those functions that need to be output. Also defer those |
ec6c615d RK |
3465 | functions that we are supposed to defer. We cannot defer |
3466 | functions containing nested functions since the nested function | |
bbc0e641 JM |
3467 | data is in our non-saved obstack. We cannot defer nested |
3468 | functions for the same reason. */ | |
ec6c615d | 3469 | |
e9a25f70 JL |
3470 | /* If this is a nested inline, remove ADDRESSOF now so we can |
3471 | finish compiling ourselves. Otherwise, wait until EOF. | |
3472 | We have to do this because the purge_addressof transformation | |
3473 | changes the DECL_RTL for many variables, which confuses integrate. */ | |
956d6950 | 3474 | if (inlinable) |
e9a25f70 JL |
3475 | { |
3476 | if (decl_function_context (decl)) | |
3477 | purge_addressof (insns); | |
3478 | else | |
3479 | DECL_DEFER_OUTPUT (decl) = 1; | |
3480 | } | |
3481 | ||
ec6c615d RK |
3482 | if (! current_function_contains_functions |
3483 | && (DECL_DEFER_OUTPUT (decl) | |
9deaf1b1 | 3484 | || (DECL_INLINE (decl) |
ec6c615d RK |
3485 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) |
3486 | && ! flag_keep_inline_functions) | |
3487 | || DECL_EXTERNAL (decl))))) | |
4291d9c8 | 3488 | { |
951af26e JM |
3489 | DECL_DEFER_OUTPUT (decl) = 1; |
3490 | ||
a701efba MM |
3491 | /* If -Wreturn-type, we have to do a bit of compilation. |
3492 | However, if we just fall through we will call | |
3493 | save_for_inline_copying() which results in excessive | |
3494 | memory use. Instead, we just want to call | |
3495 | jump_optimize() to figure out whether or not we can fall | |
3496 | off the end of the function; we do the minimum amount of | |
3497 | work necessary to make that safe. And, we set optimize | |
3498 | to zero to keep jump_optimize from working too hard. */ | |
3499 | if (warn_return_type) | |
937522b5 | 3500 | { |
a701efba MM |
3501 | int saved_optimize = optimize; |
3502 | optimize = 0; | |
3503 | find_exception_handler_labels (); | |
14bf4a33 MM |
3504 | jump_optimize (get_insns(), !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, |
3505 | !JUMP_AFTER_REGSCAN); | |
a701efba MM |
3506 | optimize = saved_optimize; |
3507 | } | |
3508 | ||
951af26e | 3509 | #ifdef DWARF_DEBUGGING_INFO |
a701efba MM |
3510 | /* Generate the DWARF info for the "abstract" instance |
3511 | of a function which we may later generate inlined and/or | |
3512 | out-of-line instances of. */ | |
3513 | if (write_symbols == DWARF_DEBUG) | |
3514 | { | |
3515 | set_decl_abstract_flags (decl, 1); | |
3516 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
3517 | set_decl_abstract_flags (decl, 0); | |
3518 | } | |
9a666dda JM |
3519 | #endif |
3520 | #ifdef DWARF2_DEBUGGING_INFO | |
a701efba MM |
3521 | /* Generate the DWARF2 info for the "abstract" instance |
3522 | of a function which we may later generate inlined and/or | |
3523 | out-of-line instances of. */ | |
3524 | if (write_symbols == DWARF2_DEBUG) | |
3525 | { | |
3526 | set_decl_abstract_flags (decl, 1); | |
3527 | TIMEVAR (symout_time, dwarf2out_decl (decl)); | |
3528 | set_decl_abstract_flags (decl, 0); | |
937522b5 | 3529 | } |
a701efba MM |
3530 | #endif |
3531 | TIMEVAR (integration_time, save_for_inline_nocopy (decl)); | |
3532 | RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlinable; | |
3533 | goto exit_rest_of_compilation; | |
4291d9c8 RS |
3534 | } |
3535 | ||
8a958768 | 3536 | /* If we have to compile the function now, save its rtl and subdecls |
4291d9c8 | 3537 | so that its compilation will not affect what others get. */ |
956d6950 | 3538 | if (inlinable || DECL_DEFER_OUTPUT (decl)) |
4291d9c8 | 3539 | { |
937522b5 RS |
3540 | #ifdef DWARF_DEBUGGING_INFO |
3541 | /* Generate the DWARF info for the "abstract" instance of | |
3542 | a function which we will generate an out-of-line instance | |
3543 | of almost immediately (and which we may also later generate | |
3544 | various inlined instances of). */ | |
3545 | if (write_symbols == DWARF_DEBUG) | |
3546 | { | |
3547 | set_decl_abstract_flags (decl, 1); | |
3548 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
3549 | set_decl_abstract_flags (decl, 0); | |
3550 | } | |
9a666dda JM |
3551 | #endif |
3552 | #ifdef DWARF2_DEBUGGING_INFO | |
3553 | /* Generate the DWARF2 info for the "abstract" instance of | |
3554 | a function which we will generate an out-of-line instance | |
3555 | of almost immediately (and which we may also later generate | |
3556 | various inlined instances of). */ | |
3557 | if (write_symbols == DWARF2_DEBUG) | |
3558 | { | |
3559 | set_decl_abstract_flags (decl, 1); | |
88dad228 | 3560 | TIMEVAR (symout_time, dwarf2out_decl (decl)); |
9a666dda JM |
3561 | set_decl_abstract_flags (decl, 0); |
3562 | } | |
937522b5 | 3563 | #endif |
4291d9c8 | 3564 | saved_block_tree = DECL_INITIAL (decl); |
8a958768 | 3565 | saved_arguments = DECL_ARGUMENTS (decl); |
4291d9c8 | 3566 | TIMEVAR (integration_time, save_for_inline_copying (decl)); |
956d6950 | 3567 | RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlinable; |
4291d9c8 | 3568 | } |
4291d9c8 | 3569 | |
b8471b65 | 3570 | /* If specified extern inline but we aren't inlining it, we are |
1cbe6eb6 JM |
3571 | done. This goes for anything that gets here with DECL_EXTERNAL |
3572 | set, not just things with DECL_INLINE. */ | |
3573 | if (DECL_EXTERNAL (decl)) | |
b8471b65 RK |
3574 | goto exit_rest_of_compilation; |
3575 | } | |
07af9d16 | 3576 | |
951af26e JM |
3577 | if (! DECL_DEFER_OUTPUT (decl)) |
3578 | TREE_ASM_WRITTEN (decl) = 1; | |
4291d9c8 RS |
3579 | |
3580 | /* Now that integrate will no longer see our rtl, we need not distinguish | |
3581 | between the return value of this function and the return value of called | |
3582 | functions. */ | |
3583 | rtx_equal_function_value_matters = 0; | |
3584 | ||
32235b30 RS |
3585 | /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */ |
3586 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
4291d9c8 RS |
3587 | { |
3588 | goto exit_rest_of_compilation; | |
3589 | } | |
3590 | ||
154bba13 TT |
3591 | /* Emit code to get eh context, if needed. */ |
3592 | emit_eh_context (); | |
3593 | ||
4291d9c8 RS |
3594 | #ifdef FINALIZE_PIC |
3595 | /* If we are doing position-independent code generation, now | |
3596 | is the time to output special prologues and epilogues. | |
3597 | We do not want to do this earlier, because it just clutters | |
3598 | up inline functions with meaningless insns. */ | |
3599 | if (flag_pic) | |
3600 | FINALIZE_PIC; | |
3601 | #endif | |
3602 | ||
89418a92 BK |
3603 | /* From now on, allocate rtl in current_obstack, not in saveable_obstack. |
3604 | Note that that may have been done above, in save_for_inline_copying. | |
3605 | The call to resume_temporary_allocation near the end of this function | |
3606 | goes back to the usual state of affairs. This must be done after | |
3607 | we've built up any unwinders for exception handling, and done | |
3608 | the FINALIZE_PIC work, if necessary. */ | |
3609 | ||
3610 | rtl_in_current_obstack (); | |
3d195391 | 3611 | |
4291d9c8 RS |
3612 | insns = get_insns (); |
3613 | ||
3614 | /* Copy any shared structure that should not be shared. */ | |
3615 | ||
3616 | unshare_all_rtl (insns); | |
3617 | ||
c9ec4f99 DM |
3618 | #ifdef SETJMP_VIA_SAVE_AREA |
3619 | /* This must be performed before virutal register instantiation. */ | |
3620 | if (current_function_calls_alloca) | |
3621 | optimize_save_area_alloca (insns); | |
3622 | #endif | |
3623 | ||
4291d9c8 RS |
3624 | /* Instantiate all virtual registers. */ |
3625 | ||
3626 | instantiate_virtual_regs (current_function_decl, get_insns ()); | |
3627 | ||
3628 | /* See if we have allocated stack slots that are not directly addressable. | |
3629 | If so, scan all the insns and create explicit address computation | |
3630 | for all references to such slots. */ | |
3631 | /* fixup_stack_slots (); */ | |
3632 | ||
3d195391 MS |
3633 | /* Find all the EH handlers. */ |
3634 | find_exception_handler_labels (); | |
3635 | ||
cc4e79d8 JL |
3636 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields |
3637 | are initialized and to compute whether control can drop off the end | |
3638 | of the function. */ | |
3639 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
14bf4a33 MM |
3640 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, |
3641 | JUMP_AFTER_REGSCAN)); | |
4291d9c8 | 3642 | |
32235b30 | 3643 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
951af26e | 3644 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
32235b30 RS |
3645 | goto exit_rest_of_compilation; |
3646 | ||
4291d9c8 RS |
3647 | /* Dump rtl code after jump, if we are doing that. */ |
3648 | ||
032713aa NC |
3649 | if (jump_opt_dump) |
3650 | dump_rtl (".jump", decl, print_rtl, insns); | |
4291d9c8 RS |
3651 | |
3652 | /* Perform common subexpression elimination. | |
3653 | Nonzero value from `cse_main' means that jumps were simplified | |
3654 | and some code may now be unreachable, so do | |
3655 | jump optimization again. */ | |
3656 | ||
4291d9c8 RS |
3657 | if (optimize > 0) |
3658 | { | |
032713aa NC |
3659 | if (cse_dump) |
3660 | open_dump_file (".cse", decl_printable_name (decl, 2)); | |
3661 | ||
4291d9c8 RS |
3662 | TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1)); |
3663 | ||
3664 | if (flag_thread_jumps) | |
3665 | /* Hacks by tiemann & kenner. */ | |
6f606d63 | 3666 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1)); |
4291d9c8 RS |
3667 | |
3668 | TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (), | |
032713aa | 3669 | 0, rtl_dump_file)); |
c6a26dc4 | 3670 | TIMEVAR (cse_time, delete_trivially_dead_insns (insns, max_reg_num ())); |
4291d9c8 | 3671 | |
534bfae4 | 3672 | if (tem || optimize > 1) |
14bf4a33 MM |
3673 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3674 | !JUMP_NOOP_MOVES, | |
3675 | !JUMP_AFTER_REGSCAN)); | |
4291d9c8 | 3676 | |
032713aa | 3677 | /* Dump rtl code after cse, if we are doing that. */ |
735a0e33 | 3678 | |
032713aa | 3679 | if (cse_dump) |
735a0e33 UD |
3680 | { |
3681 | close_dump_file (print_rtl, insns); | |
3682 | if (graph_dump_format != no_graph) | |
3683 | print_rtl_graph_with_bb (dump_base_name, ".cse", insns); | |
3684 | } | |
032713aa | 3685 | } |
4291d9c8 | 3686 | |
e9a25f70 JL |
3687 | purge_addressof (insns); |
3688 | reg_scan (insns, max_reg_num (), 1); | |
3689 | ||
3690 | if (addressof_dump) | |
735a0e33 UD |
3691 | { |
3692 | dump_rtl (".addressof", decl, print_rtl, insns); | |
3693 | if (graph_dump_format != no_graph) | |
3694 | print_rtl_graph_with_bb (dump_base_name, ".addressof", insns); | |
3695 | } | |
3696 | ||
7506f491 DE |
3697 | /* Perform global cse. */ |
3698 | ||
3699 | if (optimize > 0 && flag_gcse) | |
3700 | { | |
3701 | if (gcse_dump) | |
3702 | open_dump_file (".gcse", IDENTIFIER_POINTER (DECL_NAME (decl))); | |
735a0e33 | 3703 | |
7506f491 DE |
3704 | TIMEVAR (gcse_time, gcse_main (insns, rtl_dump_file)); |
3705 | ||
3706 | if (gcse_dump) | |
735a0e33 UD |
3707 | { |
3708 | close_dump_file (print_rtl, insns); | |
3709 | if (graph_dump_format != no_graph) | |
3710 | print_rtl_graph_with_bb (dump_base_name, ".gcse", insns); | |
3711 | } | |
7506f491 | 3712 | } |
4291d9c8 RS |
3713 | /* Move constant computations out of loops. */ |
3714 | ||
3715 | if (optimize > 0) | |
3716 | { | |
032713aa NC |
3717 | if (loop_dump) |
3718 | open_dump_file (".loop", decl_printable_name (decl, 2)); | |
3719 | ||
3720 | TIMEVAR | |
3721 | (loop_time, | |
3722 | { | |
3723 | if (flag_rerun_loop_opt) | |
4291d9c8 | 3724 | { |
032713aa NC |
3725 | /* We only want to perform unrolling once. */ |
3726 | ||
5accd822 | 3727 | loop_optimize (insns, rtl_dump_file, 0, 0); |
032713aa | 3728 | |
c6a26dc4 JL |
3729 | |
3730 | /* The first call to loop_optimize makes some instructions | |
3731 | trivially dead. We delete those instructions now in the | |
3732 | hope that doing so will make the heuristics in loop work | |
3733 | better and possibly speed up compilation. */ | |
3734 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3735 | ||
3736 | /* The regscan pass is currently necessary as the alias | |
3737 | analysis code depends on this information. */ | |
032713aa NC |
3738 | reg_scan (insns, max_reg_num (), 1); |
3739 | } | |
5accd822 | 3740 | loop_optimize (insns, rtl_dump_file, flag_unroll_loops, 1); |
032713aa | 3741 | }); |
735a0e33 | 3742 | |
032713aa | 3743 | /* Dump rtl code after loop opt, if we are doing that. */ |
735a0e33 | 3744 | |
032713aa | 3745 | if (loop_dump) |
735a0e33 UD |
3746 | { |
3747 | close_dump_file (print_rtl, insns); | |
3748 | if (graph_dump_format != no_graph) | |
3749 | print_rtl_graph_with_bb (dump_base_name, ".loop", insns); | |
3750 | } | |
4291d9c8 RS |
3751 | } |
3752 | ||
032713aa | 3753 | if (optimize > 0) |
c2f006ec | 3754 | { |
032713aa NC |
3755 | if (cse2_dump) |
3756 | open_dump_file (".cse2", decl_printable_name (decl, 2)); | |
735a0e33 | 3757 | |
032713aa NC |
3758 | if (flag_rerun_cse_after_loop) |
3759 | { | |
3760 | /* Running another jump optimization pass before the second | |
3761 | cse pass sometimes simplifies the RTL enough to allow | |
3762 | the second CSE pass to do a better job. Jump_optimize can change | |
3763 | max_reg_num so we must rerun reg_scan afterwards. | |
3764 | ??? Rework to not call reg_scan so often. */ | |
3765 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
14bf4a33 MM |
3766 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3767 | !JUMP_NOOP_MOVES, | |
3768 | JUMP_AFTER_REGSCAN)); | |
032713aa NC |
3769 | |
3770 | TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0)); | |
3771 | TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (), | |
3772 | 1, rtl_dump_file)); | |
3773 | if (tem) | |
14bf4a33 MM |
3774 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3775 | !JUMP_NOOP_MOVES, | |
3776 | !JUMP_AFTER_REGSCAN)); | |
032713aa | 3777 | } |
0d332add | 3778 | |
032713aa NC |
3779 | if (flag_thread_jumps) |
3780 | { | |
3781 | /* This pass of jump threading straightens out code | |
3782 | that was kinked by loop optimization. */ | |
3783 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
3784 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0)); | |
3785 | } | |
735a0e33 | 3786 | |
032713aa | 3787 | /* Dump rtl code after cse, if we are doing that. */ |
735a0e33 | 3788 | |
032713aa | 3789 | if (cse2_dump) |
735a0e33 UD |
3790 | { |
3791 | close_dump_file (print_rtl, insns); | |
3792 | if (graph_dump_format != no_graph) | |
3793 | print_rtl_graph_with_bb (dump_base_name, ".cse2", insns); | |
3794 | } | |
032713aa | 3795 | } |
735a0e33 | 3796 | |
0d332add | 3797 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
032713aa NC |
3798 | { |
3799 | if (branch_prob_dump) | |
3800 | open_dump_file (".bp", decl_printable_name (decl, 2)); | |
735a0e33 | 3801 | |
032713aa NC |
3802 | TIMEVAR |
3803 | (branch_prob_time, | |
3804 | { | |
3805 | branch_prob (insns, rtl_dump_file); | |
3806 | }); | |
735a0e33 | 3807 | |
032713aa | 3808 | if (branch_prob_dump) |
735a0e33 UD |
3809 | { |
3810 | close_dump_file (print_rtl, insns); | |
3811 | if (graph_dump_format != no_graph) | |
3812 | print_rtl_graph_with_bb (dump_base_name, ".bp", insns); | |
3813 | } | |
032713aa | 3814 | } |
735a0e33 | 3815 | |
4291d9c8 RS |
3816 | /* We are no longer anticipating cse in this function, at least. */ |
3817 | ||
3818 | cse_not_expected = 1; | |
3819 | ||
3820 | /* Now we choose between stupid (pcc-like) register allocation | |
3821 | (if we got the -noreg switch and not -opt) | |
3822 | and smart register allocation. */ | |
3823 | ||
3824 | if (optimize > 0) /* Stupid allocation probably won't work */ | |
3825 | obey_regdecls = 0; /* if optimizations being done. */ | |
3826 | ||
3827 | regclass_init (); | |
3828 | ||
3829 | /* Print function header into flow dump now | |
3830 | because doing the flow analysis makes some of the dump. */ | |
3831 | ||
3832 | if (flow_dump) | |
032713aa NC |
3833 | open_dump_file (".flow", decl_printable_name (decl, 2)); |
3834 | ||
4291d9c8 RS |
3835 | if (obey_regdecls) |
3836 | { | |
3837 | TIMEVAR (flow_time, | |
3838 | { | |
3839 | regclass (insns, max_reg_num ()); | |
3840 | stupid_life_analysis (insns, max_reg_num (), | |
032713aa | 3841 | rtl_dump_file); |
4291d9c8 RS |
3842 | }); |
3843 | } | |
3844 | else | |
3845 | { | |
3846 | /* Do control and data flow analysis, | |
3847 | and write some of the results to dump file. */ | |
3848 | ||
5ece9746 JL |
3849 | TIMEVAR |
3850 | (flow_time, | |
3851 | { | |
9265dacf | 3852 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
5ece9746 JL |
3853 | life_analysis (insns, max_reg_num (), rtl_dump_file); |
3854 | }); | |
3855 | ||
4291d9c8 RS |
3856 | if (warn_uninitialized) |
3857 | { | |
3858 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
3859 | setjmp_args_warning (); | |
3860 | } | |
3861 | } | |
3862 | ||
3863 | /* Dump rtl after flow analysis. */ | |
3864 | ||
3865 | if (flow_dump) | |
735a0e33 UD |
3866 | { |
3867 | close_dump_file (print_rtl_with_bb, insns); | |
3868 | if (graph_dump_format != no_graph) | |
3869 | print_rtl_graph_with_bb (dump_base_name, ".flow", insns); | |
3870 | } | |
3871 | ||
f1db3576 JL |
3872 | /* The first life analysis pass has finished. From now on we can not |
3873 | generate any new pseudos. */ | |
3874 | no_new_pseudos = 1; | |
3875 | ||
4291d9c8 RS |
3876 | /* If -opt, try combining insns through substitution. */ |
3877 | ||
3878 | if (optimize > 0) | |
032713aa NC |
3879 | { |
3880 | TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ())); | |
735a0e33 | 3881 | |
032713aa | 3882 | /* Dump rtl code after insn combination. */ |
735a0e33 | 3883 | |
032713aa | 3884 | if (combine_dump) |
735a0e33 UD |
3885 | { |
3886 | dump_rtl (".combine", decl, print_rtl_with_bb, insns); | |
3887 | if (graph_dump_format != no_graph) | |
3888 | print_rtl_graph_with_bb (dump_base_name, ".combine", insns); | |
3889 | } | |
032713aa | 3890 | } |
8c660648 JL |
3891 | |
3892 | /* Register allocation pre-pass, to reduce number of moves | |
3893 | necessary for two-address machines. */ | |
1230327b | 3894 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) |
032713aa NC |
3895 | { |
3896 | if (regmove_dump) | |
3897 | open_dump_file (".regmove", decl_printable_name (decl, 2)); | |
735a0e33 | 3898 | |
032713aa NC |
3899 | TIMEVAR (regmove_time, regmove_optimize (insns, max_reg_num (), |
3900 | rtl_dump_file)); | |
735a0e33 | 3901 | |
032713aa | 3902 | if (regmove_dump) |
735a0e33 UD |
3903 | { |
3904 | close_dump_file (print_rtl_with_bb, insns); | |
3905 | if (graph_dump_format != no_graph) | |
3906 | print_rtl_graph_with_bb (dump_base_name, ".regmove", insns); | |
3907 | } | |
032713aa | 3908 | } |
8c660648 | 3909 | |
4291d9c8 RS |
3910 | /* Print function header into sched dump now |
3911 | because doing the sched analysis makes some of the dump. */ | |
3912 | ||
4291d9c8 RS |
3913 | if (optimize > 0 && flag_schedule_insns) |
3914 | { | |
032713aa NC |
3915 | if (sched_dump) |
3916 | open_dump_file (".sched", decl_printable_name (decl, 2)); | |
735a0e33 | 3917 | |
4291d9c8 RS |
3918 | /* Do control and data sched analysis, |
3919 | and write some of the results to dump file. */ | |
3920 | ||
032713aa | 3921 | TIMEVAR (sched_time, schedule_insns (rtl_dump_file)); |
735a0e33 | 3922 | |
032713aa | 3923 | /* Dump rtl after instruction scheduling. */ |
735a0e33 | 3924 | |
032713aa | 3925 | if (sched_dump) |
735a0e33 UD |
3926 | { |
3927 | close_dump_file (print_rtl_with_bb, insns); | |
3928 | if (graph_dump_format != no_graph) | |
3929 | print_rtl_graph_with_bb (dump_base_name, ".sched", insns); | |
3930 | } | |
4291d9c8 RS |
3931 | } |
3932 | ||
4291d9c8 RS |
3933 | /* Unless we did stupid register allocation, |
3934 | allocate pseudo-regs that are used only within 1 basic block. */ | |
3935 | ||
3936 | if (!obey_regdecls) | |
3937 | TIMEVAR (local_alloc_time, | |
3938 | { | |
213c4983 | 3939 | recompute_reg_usage (insns, ! optimize_size); |
4291d9c8 RS |
3940 | regclass (insns, max_reg_num ()); |
3941 | local_alloc (); | |
3942 | }); | |
3943 | ||
3944 | /* Dump rtl code after allocating regs within basic blocks. */ | |
3945 | ||
3946 | if (local_reg_dump) | |
032713aa NC |
3947 | { |
3948 | open_dump_file (".lreg", decl_printable_name (decl, 2)); | |
735a0e33 | 3949 | |
032713aa NC |
3950 | TIMEVAR (dump_time, dump_flow_info (rtl_dump_file)); |
3951 | TIMEVAR (dump_time, dump_local_alloc (rtl_dump_file)); | |
735a0e33 | 3952 | |
032713aa | 3953 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 UD |
3954 | if (graph_dump_format != no_graph) |
3955 | print_rtl_graph_with_bb (dump_base_name, ".lreg", insns); | |
032713aa | 3956 | } |
4291d9c8 RS |
3957 | |
3958 | if (global_reg_dump) | |
032713aa | 3959 | open_dump_file (".greg", decl_printable_name (decl, 2)); |
4291d9c8 RS |
3960 | |
3961 | /* Unless we did stupid register allocation, | |
3962 | allocate remaining pseudo-regs, then do the reload pass | |
3963 | fixing up any insns that are invalid. */ | |
3964 | ||
3965 | TIMEVAR (global_alloc_time, | |
3966 | { | |
3967 | if (!obey_regdecls) | |
032713aa | 3968 | failure = global_alloc (rtl_dump_file); |
4291d9c8 | 3969 | else |
032713aa | 3970 | failure = reload (insns, 0, rtl_dump_file); |
4291d9c8 RS |
3971 | }); |
3972 | ||
4291d9c8 | 3973 | |
ab40ad2b RS |
3974 | if (failure) |
3975 | goto exit_rest_of_compilation; | |
3976 | ||
c8ed219d RK |
3977 | /* Do a very simple CSE pass over just the hard registers. */ |
3978 | if (optimize > 0) | |
3979 | reload_cse_regs (insns); | |
3980 | ||
45c85c4e JL |
3981 | /* If optimizing and we are performing instruction scheduling after |
3982 | reload, then go ahead and split insns now since we are about to | |
3983 | recompute flow information anyway. | |
3984 | ||
3985 | reload_cse_regs may expose more splitting opportunities, expecially | |
3986 | for double-word operations. */ | |
3987 | if (optimize > 0 && flag_schedule_insns_after_reload) | |
3988 | { | |
3989 | rtx insn; | |
3990 | ||
3991 | for (insn = insns; insn; insn = NEXT_INSN (insn)) | |
3992 | { | |
3993 | rtx last; | |
3994 | ||
3995 | if (GET_RTX_CLASS (GET_CODE (insn)) != 'i') | |
3996 | continue; | |
3997 | ||
3998 | last = try_split (PATTERN (insn), insn, 1); | |
3999 | ||
4000 | if (last != insn) | |
4001 | { | |
4002 | PUT_CODE (insn, NOTE); | |
4003 | NOTE_SOURCE_FILE (insn) = 0; | |
4004 | NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED; | |
4005 | } | |
4006 | } | |
4007 | } | |
4008 | ||
6764d250 BS |
4009 | /* Re-create the death notes which were deleted during reload. */ |
4010 | if (optimize) | |
4011 | TIMEVAR | |
4012 | (flow_time, | |
4013 | { | |
4014 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
4015 | life_analysis (insns, max_reg_num (), rtl_dump_file); | |
4016 | }); | |
4017 | ||
56744d1a JL |
4018 | flow2_completed = 1; |
4019 | ||
bdac5f58 TW |
4020 | /* On some machines, the prologue and epilogue code, or parts thereof, |
4021 | can be represented as RTL. Doing so lets us schedule insns between | |
4022 | it and the rest of the code and also allows delayed branch | |
4023 | scheduling to operate in the epilogue. */ | |
4024 | ||
4025 | thread_prologue_and_epilogue_insns (insns); | |
4026 | ||
9ec36da5 JL |
4027 | if (global_reg_dump) |
4028 | { | |
4029 | TIMEVAR (dump_time, dump_global_regs (rtl_dump_file)); | |
4030 | close_dump_file (print_rtl_with_bb, insns); | |
735a0e33 UD |
4031 | if (graph_dump_format != no_graph) |
4032 | print_rtl_graph_with_bb (dump_base_name, ".greg", insns); | |
9ec36da5 | 4033 | } |
4291d9c8 RS |
4034 | if (optimize > 0 && flag_schedule_insns_after_reload) |
4035 | { | |
4036 | if (sched2_dump) | |
032713aa | 4037 | open_dump_file (".sched2", decl_printable_name (decl, 2)); |
4291d9c8 RS |
4038 | |
4039 | /* Do control and data sched analysis again, | |
4040 | and write some more of the results to dump file. */ | |
4041 | ||
032713aa | 4042 | TIMEVAR (sched2_time, schedule_insns (rtl_dump_file)); |
4291d9c8 RS |
4043 | |
4044 | /* Dump rtl after post-reorder instruction scheduling. */ | |
4045 | ||
4046 | if (sched2_dump) | |
735a0e33 UD |
4047 | { |
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, ".sched2", insns); | |
4051 | } | |
4291d9c8 RS |
4052 | } |
4053 | ||
4054 | #ifdef LEAF_REGISTERS | |
4055 | leaf_function = 0; | |
4056 | if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ()) | |
ab40ad2b | 4057 | leaf_function = 1; |
4291d9c8 RS |
4058 | #endif |
4059 | ||
4060 | /* One more attempt to remove jumps to .+1 | |
4061 | left by dead-store-elimination. | |
4062 | Also do cross-jumping this time | |
4063 | and delete no-op move insns. */ | |
4064 | ||
4065 | if (optimize > 0) | |
4066 | { | |
14bf4a33 MM |
4067 | TIMEVAR (jump_time, jump_optimize (insns, JUMP_CROSS_JUMP, |
4068 | JUMP_NOOP_MOVES, | |
4069 | !JUMP_AFTER_REGSCAN)); | |
735a0e33 | 4070 | |
032713aa | 4071 | /* Dump rtl code after jump, if we are doing that. */ |
4291d9c8 | 4072 | |
032713aa | 4073 | if (jump2_opt_dump) |
735a0e33 UD |
4074 | { |
4075 | dump_rtl (".jump2", decl, print_rtl_with_bb, insns); | |
4076 | if (graph_dump_format != no_graph) | |
4077 | print_rtl_graph_with_bb (dump_base_name, ".jump2", insns); | |
4078 | } | |
032713aa | 4079 | } |
4291d9c8 | 4080 | |
2c65021a RK |
4081 | /* If a machine dependent reorganization is needed, call it. */ |
4082 | #ifdef MACHINE_DEPENDENT_REORG | |
4083 | MACHINE_DEPENDENT_REORG (insns); | |
032713aa NC |
4084 | |
4085 | if (mach_dep_reorg_dump) | |
735a0e33 UD |
4086 | { |
4087 | dump_rtl (".mach", decl, print_rtl_with_bb, insns); | |
4088 | if (graph_dump_format != no_graph) | |
4089 | print_rtl_graph_with_bb (dump_base_name, ".mach", insns); | |
4090 | } | |
2c65021a RK |
4091 | #endif |
4092 | ||
4291d9c8 | 4093 | /* If a scheduling pass for delayed branches is to be done, |
0f41302f | 4094 | call the scheduling code. */ |
4291d9c8 RS |
4095 | |
4096 | #ifdef DELAY_SLOTS | |
4097 | if (optimize > 0 && flag_delayed_branch) | |
4098 | { | |
01898d58 | 4099 | TIMEVAR (dbr_sched_time, dbr_schedule (insns, rtl_dump_file)); |
735a0e33 | 4100 | |
4291d9c8 | 4101 | if (dbr_sched_dump) |
735a0e33 UD |
4102 | { |
4103 | dump_rtl (".dbr", decl, print_rtl_with_bb, insns); | |
4104 | if (graph_dump_format != no_graph) | |
4105 | print_rtl_graph_with_bb (dump_base_name, ".dbr", insns); | |
4106 | } | |
4291d9c8 RS |
4107 | } |
4108 | #endif | |
4109 | ||
d0c874f6 TG |
4110 | /* Shorten branches. */ |
4111 | TIMEVAR (shorten_branch_time, | |
4112 | { | |
4113 | shorten_branches (get_insns ()); | |
4114 | }); | |
4291d9c8 RS |
4115 | |
4116 | #ifdef STACK_REGS | |
25ba7583 JL |
4117 | if (stack_reg_dump) |
4118 | open_dump_file (".stack", decl_printable_name (decl, 2)); | |
4119 | ||
01898d58 | 4120 | TIMEVAR (stack_reg_time, reg_to_stack (insns, rtl_dump_file)); |
032713aa | 4121 | |
4291d9c8 | 4122 | if (stack_reg_dump) |
735a0e33 UD |
4123 | { |
4124 | dump_rtl (".stack", decl, print_rtl_with_bb, insns); | |
4125 | if (graph_dump_format != no_graph) | |
4126 | print_rtl_graph_with_bb (dump_base_name, ".stack", insns); | |
4127 | } | |
4291d9c8 RS |
4128 | #endif |
4129 | ||
4130 | /* Now turn the rtl into assembler code. */ | |
4131 | ||
4132 | TIMEVAR (final_time, | |
4133 | { | |
4134 | rtx x; | |
4135 | char *fnname; | |
4136 | ||
4137 | /* Get the function's name, as described by its RTL. | |
4138 | This may be different from the DECL_NAME name used | |
4139 | in the source file. */ | |
4140 | ||
4141 | x = DECL_RTL (decl); | |
4142 | if (GET_CODE (x) != MEM) | |
4143 | abort (); | |
4144 | x = XEXP (x, 0); | |
4145 | if (GET_CODE (x) != SYMBOL_REF) | |
4146 | abort (); | |
4147 | fnname = XSTR (x, 0); | |
4148 | ||
4149 | assemble_start_function (decl, fnname); | |
4150 | final_start_function (insns, asm_out_file, optimize); | |
4151 | final (insns, asm_out_file, optimize, 0); | |
4152 | final_end_function (insns, asm_out_file, optimize); | |
4153 | assemble_end_function (decl, fnname); | |
e5e809f4 JL |
4154 | if (! quiet_flag) |
4155 | fflush (asm_out_file); | |
9ddca353 RK |
4156 | |
4157 | /* Release all memory held by regsets now */ | |
4158 | regset_release_memory (); | |
4291d9c8 RS |
4159 | }); |
4160 | ||
4161 | /* Write DBX symbols if requested */ | |
4162 | ||
4163 | /* Note that for those inline functions where we don't initially | |
4164 | know for certain that we will be generating an out-of-line copy, | |
4165 | the first invocation of this routine (rest_of_compilation) will | |
4166 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
4167 | Later on, finish_compilation will call rest_of_compilation again | |
4168 | for those inline functions that need to have out-of-line copies | |
4169 | generated. During that call, we *will* be routed past here. */ | |
4170 | ||
4171 | #ifdef DBX_DEBUGGING_INFO | |
4172 | if (write_symbols == DBX_DEBUG) | |
4173 | TIMEVAR (symout_time, dbxout_function (decl)); | |
4174 | #endif | |
4175 | ||
4176 | #ifdef DWARF_DEBUGGING_INFO | |
4177 | if (write_symbols == DWARF_DEBUG) | |
4178 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
4179 | #endif | |
4180 | ||
9a666dda JM |
4181 | #ifdef DWARF2_DEBUGGING_INFO |
4182 | if (write_symbols == DWARF2_DEBUG) | |
88dad228 | 4183 | TIMEVAR (symout_time, dwarf2out_decl (decl)); |
9a666dda JM |
4184 | #endif |
4185 | ||
4291d9c8 RS |
4186 | exit_rest_of_compilation: |
4187 | ||
421382ac BS |
4188 | free_bb_memory (); |
4189 | ||
f246a305 RS |
4190 | /* In case the function was not output, |
4191 | don't leave any temporary anonymous types | |
4192 | queued up for sdb output. */ | |
4193 | #ifdef SDB_DEBUGGING_INFO | |
4194 | if (write_symbols == SDB_DEBUG) | |
37366632 | 4195 | sdbout_types (NULL_TREE); |
f246a305 RS |
4196 | #endif |
4197 | ||
8a958768 RS |
4198 | /* Put back the tree of subblocks and list of arguments |
4199 | from before we copied them. | |
4291d9c8 RS |
4200 | Code generation and the output of debugging info may have modified |
4201 | the copy, but the original is unchanged. */ | |
4202 | ||
4203 | if (saved_block_tree != 0) | |
fb19c456 JM |
4204 | { |
4205 | DECL_INITIAL (decl) = saved_block_tree; | |
4206 | DECL_ARGUMENTS (decl) = saved_arguments; | |
4207 | DECL_ABSTRACT_ORIGIN (decl) = NULL_TREE; | |
4208 | } | |
4291d9c8 RS |
4209 | |
4210 | reload_completed = 0; | |
56744d1a | 4211 | flow2_completed = 0; |
f1db3576 | 4212 | no_new_pseudos = 0; |
4291d9c8 | 4213 | |
32e705c4 MM |
4214 | TIMEVAR (final_time, |
4215 | { | |
4216 | /* Clear out the insn_length contents now that they are no | |
4217 | longer valid. */ | |
4218 | init_insn_lengths (); | |
4291d9c8 | 4219 | |
32e705c4 MM |
4220 | /* Clear out the real_constant_chain before some of the rtx's |
4221 | it runs through become garbage. */ | |
4222 | clear_const_double_mem (); | |
4291d9c8 | 4223 | |
32e705c4 MM |
4224 | /* Cancel the effect of rtl_in_current_obstack. */ |
4225 | resume_temporary_allocation (); | |
adcd38c9 | 4226 | |
32e705c4 MM |
4227 | /* Show no temporary slots allocated. */ |
4228 | init_temp_slots (); | |
4229 | }); | |
adcd38c9 | 4230 | |
c8d86b9a JW |
4231 | /* Make sure volatile mem refs aren't considered valid operands for |
4232 | arithmetic insns. We must call this here if this is a nested inline | |
4233 | function, since the above code leaves us in the init_recog state | |
4234 | (from final.c), and the function context push/pop code does not | |
4235 | save/restore volatile_ok. | |
4236 | ||
4237 | ??? Maybe it isn't necessary for expand_start_function to call this | |
4238 | anymore if we do it here? */ | |
4239 | ||
4240 | init_recog_no_volatile (); | |
4241 | ||
4291d9c8 RS |
4242 | /* The parsing time is all the time spent in yyparse |
4243 | *except* what is spent in this function. */ | |
4244 | ||
4245 | parse_time -= get_run_time () - start_time; | |
735a0e33 UD |
4246 | |
4247 | /* Reset global variables. */ | |
4248 | free_basic_block_vars (0); | |
4291d9c8 RS |
4249 | } |
4250 | \f | |
b8468bc7 NC |
4251 | static void |
4252 | display_help () | |
4253 | { | |
4254 | int undoc; | |
114791ea | 4255 | unsigned long i; |
87e11268 | 4256 | const char * lang; |
b8468bc7 | 4257 | |
40f943dd | 4258 | #ifndef USE_CPPLIB |
b8468bc7 NC |
4259 | printf ("Usage: %s input [switches]\n", progname); |
4260 | printf ("Switches:\n"); | |
40f943dd | 4261 | #endif |
b8468bc7 NC |
4262 | printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n"); |
4263 | printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n"); | |
4264 | printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n"); | |
4265 | ||
4266 | for (i = NUM_ELEM (f_options); i--;) | |
4267 | { | |
87e11268 | 4268 | const char * description = f_options[i].description; |
b8468bc7 NC |
4269 | |
4270 | if (description != NULL && * description != 0) | |
4271 | printf (" -f%-21s %s\n", | |
4272 | f_options[i].string, description); | |
4273 | } | |
4274 | ||
4275 | printf (" -O[number] Set optimisation level to [number]\n"); | |
4276 | printf (" -Os Optimise for space rather than speed\n"); | |
4277 | printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n"); | |
4278 | printf (" -pedantic-errors Like -pedantic except that errors are produced\n"); | |
4279 | printf (" -w Suppress warnings\n"); | |
4280 | printf (" -W Enable extra warnings\n"); | |
4281 | ||
4282 | for (i = NUM_ELEM (W_options); i--;) | |
4283 | { | |
87e11268 | 4284 | const char * description = W_options[i].description; |
b8468bc7 NC |
4285 | |
4286 | if (description != NULL && * description != 0) | |
4287 | printf (" -W%-21s %s\n", | |
4288 | W_options[i].string, description); | |
4289 | } | |
4290 | ||
4291 | printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n"); | |
4292 | printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"); | |
4293 | printf (" -p Enable function profiling\n"); | |
4294 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) | |
4295 | printf (" -a Enable block profiling \n"); | |
4296 | #endif | |
4297 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT | |
4298 | printf (" -ax Enable jump profiling \n"); | |
4299 | #endif | |
4300 | printf (" -o <file> Place output into <file> \n"); | |
4301 | printf (" -G <number> Put global and static data smaller than <number>\n"); | |
40f943dd | 4302 | printf (" bytes into a special section (on some targets)\n"); |
b8468bc7 NC |
4303 | |
4304 | for (i = NUM_ELEM (debug_args); i--;) | |
4305 | { | |
4306 | if (debug_args[i].description != NULL) | |
4307 | printf (" -%-22s %s\n", debug_args[i].arg, debug_args[i].description); | |
4308 | } | |
4309 | ||
4310 | printf (" -aux-info <file> Emit declaration info into <file>.X\n"); | |
4311 | printf (" -quiet Do not display functions compiled or elapsed time\n"); | |
4312 | printf (" -version Display the compiler's version\n"); | |
4313 | printf (" -d[letters] Enable dumps from specific passes of the compiler\n"); | |
4314 | printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n"); | |
4315 | #if defined HAIFA || defined INSN_SCHEDULING | |
4316 | printf (" -sched-verbose-<number> Set the verbosity level of the scheduler\n"); | |
4317 | #endif | |
4318 | printf (" --help Display this information\n"); | |
4319 | ||
4320 | undoc = 0; | |
4321 | lang = "language"; | |
4322 | ||
4323 | /* Display descriptions of language specific options. | |
4324 | If there is no description, note that there is an undocumented option. | |
4325 | If the description is empty, do not display anything. (This allows | |
4326 | options to be deliberately undocumented, for whatever reason). | |
4327 | If the option string is missing, then this is a marker, indicating | |
630962bf | 4328 | that the description string is in fact the name of a language, whose |
b8468bc7 NC |
4329 | language specific options are to follow. */ |
4330 | ||
4331 | if (NUM_ELEM (documented_lang_options) > 1) | |
4332 | { | |
b8468bc7 NC |
4333 | printf ("\nLanguage specific options:\n"); |
4334 | ||
4335 | for (i = 0; i < NUM_ELEM (documented_lang_options); i++) | |
4336 | { | |
87e11268 KG |
4337 | const char * description = documented_lang_options[i].description; |
4338 | const char * option = documented_lang_options[i].option; | |
b8468bc7 NC |
4339 | |
4340 | if (description == NULL) | |
844642e6 NC |
4341 | { |
4342 | undoc = 1; | |
4343 | ||
4344 | if (extra_warnings) | |
4345 | printf (" %-23.23s [undocumented]\n", option); | |
4346 | } | |
b8468bc7 NC |
4347 | else if (* description == 0) |
4348 | continue; | |
4349 | else if (option == NULL) | |
4350 | { | |
4351 | if (undoc) | |
4352 | printf | |
4353 | ("\nThere are undocumented %s specific options as well.\n", | |
4354 | lang); | |
4355 | undoc = 0; | |
4356 | ||
4357 | printf ("\n Options for %s:\n", description); | |
4358 | ||
4359 | lang = description; | |
4360 | } | |
4361 | else | |
4362 | printf (" %-23.23s %s\n", option, description); | |
4363 | } | |
4364 | } | |
4365 | ||
4366 | if (undoc) | |
4367 | printf ("\nThere are undocumented %s specific options as well.\n", lang); | |
4368 | ||
4369 | if (NUM_ELEM (target_switches) > 1 | |
4370 | #ifdef TARGET_OPTIONS | |
4371 | || NUM_ELEM (target_options) > 1 | |
4372 | #endif | |
4373 | ) | |
4374 | { | |
4375 | int doc = 0; | |
4376 | ||
4377 | undoc = 0; | |
4378 | ||
4379 | printf ("\nTarget specific options:\n"); | |
4380 | ||
4381 | for (i = NUM_ELEM (target_switches); i--;) | |
4382 | { | |
87e11268 KG |
4383 | const char * option = target_switches[i].name; |
4384 | const char * description = target_switches[i].description; | |
b8468bc7 | 4385 | |
844642e6 | 4386 | if (option == NULL || * option == 0) |
b8468bc7 NC |
4387 | continue; |
4388 | else if (description == NULL) | |
844642e6 NC |
4389 | { |
4390 | undoc = 1; | |
4391 | ||
4392 | if (extra_warnings) | |
4393 | printf (" -m%-21.21s [undocumented]\n", option); | |
4394 | } | |
b8468bc7 | 4395 | else if (* description != 0) |
1f50b029 | 4396 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
4397 | } |
4398 | ||
4399 | #ifdef TARGET_OPTIONS | |
4400 | for (i = NUM_ELEM (target_options); i--;) | |
4401 | { | |
87e11268 KG |
4402 | const char * option = target_options[i].prefix; |
4403 | const char * description = target_options[i].description; | |
b8468bc7 | 4404 | |
844642e6 | 4405 | if (option == NULL || * option == 0) |
b8468bc7 NC |
4406 | continue; |
4407 | else if (description == NULL) | |
844642e6 NC |
4408 | { |
4409 | undoc = 1; | |
4410 | ||
4411 | if (extra_warnings) | |
4412 | printf (" -m%-21.21s [undocumented]\n", option); | |
4413 | } | |
b8468bc7 | 4414 | else if (* description != 0) |
1f50b029 | 4415 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
4416 | } |
4417 | #endif | |
4418 | if (undoc) | |
ff59bfe6 JM |
4419 | { |
4420 | if (doc) | |
4421 | printf ("\nThere are undocumented target specific options as well.\n"); | |
4422 | else | |
4423 | printf (" They exist, but they are not documented.\n"); | |
4424 | } | |
b8468bc7 NC |
4425 | } |
4426 | } | |
4427 | ||
4428 | /* Compare the user specified 'option' with the language | |
4429 | specific 'lang_option'. Return true if they match, or | |
4430 | if 'option' is a viable prefix of 'lang_option'. */ | |
4431 | ||
4432 | static int | |
4433 | check_lang_option (option, lang_option) | |
4434 | char * option; | |
4435 | char * lang_option; | |
4436 | { | |
4437 | lang_independent_options * indep_options; | |
4438 | int len; | |
4439 | long k; | |
1f50b029 NC |
4440 | char * space; |
4441 | ||
b8468bc7 NC |
4442 | /* Ignore NULL entries. */ |
4443 | if (option == NULL || lang_option == NULL) | |
4444 | return 0; | |
4445 | ||
1f50b029 NC |
4446 | if ((space = strchr (lang_option, ' ')) != NULL) |
4447 | len = space - lang_option; | |
4448 | else | |
4449 | len = strlen (lang_option); | |
4450 | ||
b8468bc7 NC |
4451 | /* If they do not match to the first n characters then fail. */ |
4452 | if (strncmp (option, lang_option, len) != 0) | |
4453 | return 0; | |
1f50b029 | 4454 | |
b8468bc7 NC |
4455 | /* Do not accept a lang option, if it matches a normal -f or -W |
4456 | option. Chill defines a -fpack, but we want to support | |
4457 | -fpack-struct. */ | |
1f50b029 | 4458 | |
b8468bc7 | 4459 | /* An exact match is OK */ |
79c9824e | 4460 | if ((int) strlen (option) == len) |
b8468bc7 | 4461 | return 1; |
1f50b029 | 4462 | |
b8468bc7 NC |
4463 | /* If it is not an -f or -W option allow the match */ |
4464 | if (option[0] != '-') | |
4465 | return 1; | |
1f50b029 | 4466 | |
b8468bc7 NC |
4467 | switch (option[1]) |
4468 | { | |
4469 | case 'f': indep_options = f_options; break; | |
4470 | case 'W': indep_options = W_options; break; | |
4471 | default: return 1; | |
4472 | } | |
1f50b029 | 4473 | |
b8468bc7 NC |
4474 | /* The option is a -f or -W option. |
4475 | Skip past the prefix and search for the remainder in the | |
4476 | appropriate table of options. */ | |
4477 | option += 2; | |
1f50b029 | 4478 | |
b8468bc7 NC |
4479 | if (option[0] == 'n' && option[1] == 'o' && option[2] == '-') |
4480 | option += 3; | |
1f50b029 | 4481 | |
b8468bc7 NC |
4482 | for (k = NUM_ELEM (indep_options); k--;) |
4483 | { | |
4484 | if (!strcmp (option, indep_options[k].string)) | |
4485 | { | |
4486 | /* The option matched a language independent option, | |
4487 | do not allow the language specific match. */ | |
1f50b029 | 4488 | |
b8468bc7 NC |
4489 | return 0; |
4490 | } | |
4491 | } | |
1f50b029 | 4492 | |
b8468bc7 NC |
4493 | /* The option matches the start of the langauge specific option |
4494 | and it is not an exact match for a language independent option. */ | |
4495 | return 1; | |
4496 | } | |
4497 | \f | |
4291d9c8 RS |
4498 | /* Entry point of cc1/c++. Decode command args, then call compile_file. |
4499 | Exit code is 35 if can't open files, 34 if fatal error, | |
4500 | 33 if had nonfatal errors, else success. */ | |
4501 | ||
4502 | int | |
114791ea | 4503 | main (argc, argv) |
4291d9c8 RS |
4504 | int argc; |
4505 | char **argv; | |
4291d9c8 RS |
4506 | { |
4507 | register int i; | |
4508 | char *filename = 0; | |
4509 | int flag_print_mem = 0; | |
4510 | int version_flag = 0; | |
4511 | char *p; | |
4512 | ||
4513 | /* save in case md file wants to emit args as a comment. */ | |
4514 | save_argc = argc; | |
4515 | save_argv = argv; | |
4516 | ||
4517 | p = argv[0] + strlen (argv[0]); | |
128373ac RK |
4518 | while (p != argv[0] && p[-1] != '/' |
4519 | #ifdef DIR_SEPARATOR | |
4520 | && p[-1] != DIR_SEPARATOR | |
4521 | #endif | |
4522 | ) | |
4523 | --p; | |
4291d9c8 RS |
4524 | progname = p; |
4525 | ||
08ce3276 | 4526 | #if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT) |
4291d9c8 RS |
4527 | /* Get rid of any avoidable limit on stack size. */ |
4528 | { | |
4529 | struct rlimit rlim; | |
4530 | ||
0f41302f | 4531 | /* Set the stack limit huge so that alloca does not fail. */ |
4291d9c8 RS |
4532 | getrlimit (RLIMIT_STACK, &rlim); |
4533 | rlim.rlim_cur = rlim.rlim_max; | |
4534 | setrlimit (RLIMIT_STACK, &rlim); | |
4535 | } | |
c85f7c16 | 4536 | #endif |
4291d9c8 RS |
4537 | |
4538 | signal (SIGFPE, float_signal); | |
4539 | ||
935d4b07 | 4540 | #ifdef SIGPIPE |
4291d9c8 | 4541 | signal (SIGPIPE, pipe_closed); |
935d4b07 | 4542 | #endif |
4291d9c8 RS |
4543 | |
4544 | decl_printable_name = decl_name; | |
114791ea | 4545 | lang_expand_expr = (lang_expand_expr_t) do_abort; |
4291d9c8 RS |
4546 | |
4547 | /* Initialize whether `char' is signed. */ | |
4548 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
4549 | #ifdef DEFAULT_SHORT_ENUMS | |
4550 | /* Initialize how much space enums occupy, by default. */ | |
4551 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
4552 | #endif | |
4553 | ||
b53beeb2 RH |
4554 | /* Perform language-specific options intialization. */ |
4555 | lang_init_options (); | |
4556 | ||
4291d9c8 RS |
4557 | /* Scan to see what optimization level has been specified. That will |
4558 | determine the default value of many flags. */ | |
4559 | for (i = 1; i < argc; i++) | |
4560 | { | |
4561 | if (!strcmp (argv[i], "-O")) | |
4562 | { | |
4563 | optimize = 1; | |
16b6e120 | 4564 | optimize_size = 0; |
4291d9c8 RS |
4565 | } |
4566 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4567 | { | |
c6aded7c | 4568 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 RS |
4569 | char *p = &argv[i][2]; |
4570 | int c; | |
c6aded7c AG |
4571 | |
4572 | if ((p[0] == 's') && (p[1] == 0)) | |
16b6e120 NC |
4573 | { |
4574 | optimize_size = 1; | |
4575 | ||
4576 | /* Optimizing for size forces optimize to be 2. */ | |
4577 | optimize = 2; | |
4578 | } | |
c6aded7c AG |
4579 | else |
4580 | { | |
5e9defae | 4581 | while ((c = *p++)) |
c6aded7c AG |
4582 | if (! (c >= '0' && c <= '9')) |
4583 | break; | |
4584 | if (c == 0) | |
16b6e120 NC |
4585 | { |
4586 | optimize = atoi (&argv[i][2]); | |
4587 | optimize_size = 0; | |
4588 | } | |
c6aded7c | 4589 | } |
4291d9c8 RS |
4590 | } |
4591 | } | |
4592 | ||
4593 | obey_regdecls = (optimize == 0); | |
4291d9c8 RS |
4594 | |
4595 | if (optimize >= 1) | |
4596 | { | |
6731a3e3 | 4597 | flag_defer_pop = 1; |
4291d9c8 RS |
4598 | flag_thread_jumps = 1; |
4599 | #ifdef DELAY_SLOTS | |
4600 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4601 | #endif |
4602 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4603 | flag_omit_frame_pointer = 1; | |
4291d9c8 RS |
4604 | #endif |
4605 | } | |
4606 | ||
4607 | if (optimize >= 2) | |
4608 | { | |
4609 | flag_cse_follow_jumps = 1; | |
8b3686ed | 4610 | flag_cse_skip_blocks = 1; |
7506f491 | 4611 | flag_gcse = 1; |
4291d9c8 RS |
4612 | flag_expensive_optimizations = 1; |
4613 | flag_strength_reduce = 1; | |
4614 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4615 | flag_rerun_loop_opt = 1; |
ac266247 | 4616 | flag_caller_saves = 1; |
4ac8e06e | 4617 | flag_force_mem = 1; |
4291d9c8 RS |
4618 | #ifdef INSN_SCHEDULING |
4619 | flag_schedule_insns = 1; | |
4620 | flag_schedule_insns_after_reload = 1; | |
4621 | #endif | |
8c660648 | 4622 | flag_regmove = 1; |
3f9a83a9 | 4623 | flag_strict_aliasing = 1; |
4291d9c8 RS |
4624 | } |
4625 | ||
7e89c3a3 RK |
4626 | if (optimize >= 3) |
4627 | { | |
4628 | flag_inline_functions = 1; | |
4629 | } | |
4630 | ||
c1da383f DE |
4631 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
4632 | modify it. */ | |
4633 | target_flags = 0; | |
4634 | set_target_switch (""); | |
4635 | ||
4291d9c8 RS |
4636 | #ifdef OPTIMIZATION_OPTIONS |
4637 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 4638 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
4639 | #endif |
4640 | ||
4641 | /* Initialize register usage now so switches may override. */ | |
4642 | init_reg_sets (); | |
4643 | ||
4291d9c8 RS |
4644 | for (i = 1; i < argc; i++) |
4645 | { | |
85066503 | 4646 | size_t j; |
b8468bc7 | 4647 | |
b99933c7 RS |
4648 | /* If this is a language-specific option, |
4649 | decode it in a language-specific way. */ | |
b8468bc7 NC |
4650 | for (j = NUM_ELEM (documented_lang_options); j--;) |
4651 | if (check_lang_option (argv[i], documented_lang_options[j].option)) | |
b99933c7 | 4652 | break; |
b8468bc7 | 4653 | |
114791ea | 4654 | if (j != (size_t)-1) |
a0d85b75 DB |
4655 | { |
4656 | /* If the option is valid for *some* language, | |
4657 | treat it as valid even if this language doesn't understand it. */ | |
4658 | int strings_processed = lang_decode_option (argc - i, argv + i); | |
40f943dd NC |
4659 | |
4660 | if (!strcmp (argv[i], "--help")) | |
4661 | { | |
4662 | display_help (); | |
4663 | exit (0); | |
4664 | } | |
4665 | ||
a0d85b75 DB |
4666 | if (strings_processed != 0) |
4667 | i += strings_processed - 1; | |
4668 | } | |
b99933c7 | 4669 | else if (argv[i][0] == '-' && argv[i][1] != 0) |
4291d9c8 RS |
4670 | { |
4671 | register char *str = argv[i] + 1; | |
4672 | if (str[0] == 'Y') | |
4673 | str++; | |
4674 | ||
4675 | if (str[0] == 'm') | |
4676 | set_target_switch (&str[1]); | |
4677 | else if (!strcmp (str, "dumpbase")) | |
4678 | { | |
4679 | dump_base_name = argv[++i]; | |
4680 | } | |
4681 | else if (str[0] == 'd') | |
4682 | { | |
4683 | register char *p = &str[1]; | |
4684 | while (*p) | |
4685 | switch (*p++) | |
4686 | { | |
4687 | case 'a': | |
0d332add | 4688 | branch_prob_dump = 1; |
4291d9c8 | 4689 | combine_dump = 1; |
bd334356 | 4690 | #ifdef DELAY_SLOTS |
4291d9c8 | 4691 | dbr_sched_dump = 1; |
bd334356 | 4692 | #endif |
4291d9c8 RS |
4693 | flow_dump = 1; |
4694 | global_reg_dump = 1; | |
4695 | jump_opt_dump = 1; | |
e9a25f70 | 4696 | addressof_dump = 1; |
4291d9c8 RS |
4697 | jump2_opt_dump = 1; |
4698 | local_reg_dump = 1; | |
4699 | loop_dump = 1; | |
8c660648 | 4700 | regmove_dump = 1; |
4291d9c8 RS |
4701 | rtl_dump = 1; |
4702 | cse_dump = 1, cse2_dump = 1; | |
7506f491 | 4703 | gcse_dump = 1; |
4291d9c8 RS |
4704 | sched_dump = 1; |
4705 | sched2_dump = 1; | |
032713aa | 4706 | #ifdef STACK_REGS |
4291d9c8 | 4707 | stack_reg_dump = 1; |
032713aa NC |
4708 | #endif |
4709 | #ifdef MACHINE_DEPENDENT_REORG | |
4710 | mach_dep_reorg_dump = 1; | |
4711 | #endif | |
4291d9c8 | 4712 | break; |
f5963e61 JL |
4713 | case 'A': |
4714 | flag_debug_asm = 1; | |
4715 | break; | |
0d332add DE |
4716 | case 'b': |
4717 | branch_prob_dump = 1; | |
4718 | break; | |
4291d9c8 RS |
4719 | case 'c': |
4720 | combine_dump = 1; | |
4721 | break; | |
bd334356 | 4722 | #ifdef DELAY_SLOTS |
4291d9c8 RS |
4723 | case 'd': |
4724 | dbr_sched_dump = 1; | |
4725 | break; | |
bd334356 | 4726 | #endif |
4291d9c8 RS |
4727 | case 'f': |
4728 | flow_dump = 1; | |
4729 | break; | |
f5963e61 JL |
4730 | case 'F': |
4731 | addressof_dump = 1; | |
4732 | break; | |
4291d9c8 RS |
4733 | case 'g': |
4734 | global_reg_dump = 1; | |
7506f491 DE |
4735 | break; |
4736 | case 'G': | |
4737 | gcse_dump = 1; | |
4291d9c8 RS |
4738 | break; |
4739 | case 'j': | |
4740 | jump_opt_dump = 1; | |
4741 | break; | |
4742 | case 'J': | |
4743 | jump2_opt_dump = 1; | |
4744 | break; | |
f5963e61 JL |
4745 | #ifdef STACK_REGS |
4746 | case 'k': | |
4747 | stack_reg_dump = 1; | |
4748 | break; | |
4749 | #endif | |
4291d9c8 RS |
4750 | case 'l': |
4751 | local_reg_dump = 1; | |
4752 | break; | |
4753 | case 'L': | |
4754 | loop_dump = 1; | |
4755 | break; | |
4756 | case 'm': | |
4757 | flag_print_mem = 1; | |
4758 | break; | |
032713aa NC |
4759 | #ifdef MACHINE_DEPENDENT_REORG |
4760 | case 'M': | |
4761 | mach_dep_reorg_dump = 1; | |
4762 | break; | |
4763 | #endif | |
4291d9c8 RS |
4764 | case 'p': |
4765 | flag_print_asm_name = 1; | |
4766 | break; | |
4767 | case 'r': | |
4768 | rtl_dump = 1; | |
4769 | break; | |
f5963e61 JL |
4770 | case 'R': |
4771 | sched2_dump = 1; | |
4772 | break; | |
4291d9c8 RS |
4773 | case 's': |
4774 | cse_dump = 1; | |
4775 | break; | |
f5963e61 JL |
4776 | case 'S': |
4777 | sched_dump = 1; | |
4778 | break; | |
4291d9c8 RS |
4779 | case 't': |
4780 | cse2_dump = 1; | |
4781 | break; | |
8c660648 JL |
4782 | case 'N': |
4783 | regmove_dump = 1; | |
4784 | break; | |
735a0e33 UD |
4785 | case 'v': |
4786 | graph_dump_format = vcg; | |
4787 | break; | |
4291d9c8 RS |
4788 | case 'y': |
4789 | set_yydebug (1); | |
4790 | break; | |
4291d9c8 RS |
4791 | case 'x': |
4792 | rtl_dump_and_exit = 1; | |
4793 | break; | |
b5c7059b MM |
4794 | case 'D': /* these are handled by the preprocessor */ |
4795 | case 'I': | |
b5c7059b | 4796 | break; |
032713aa NC |
4797 | default: |
4798 | warning ("unrecognised gcc debugging option: %c", p[-1]); | |
4799 | break; | |
4291d9c8 RS |
4800 | } |
4801 | } | |
4802 | else if (str[0] == 'f') | |
4803 | { | |
4291d9c8 RS |
4804 | register char *p = &str[1]; |
4805 | int found = 0; | |
4806 | ||
4807 | /* Some kind of -f option. | |
4808 | P's value is the option sans `-f'. | |
4809 | Search for it in the table of options. */ | |
4810 | ||
4811 | for (j = 0; | |
4812 | !found && j < sizeof (f_options) / sizeof (f_options[0]); | |
4813 | j++) | |
4814 | { | |
4815 | if (!strcmp (p, f_options[j].string)) | |
4816 | { | |
4817 | *f_options[j].variable = f_options[j].on_value; | |
4818 | /* A goto here would be cleaner, | |
4819 | but breaks the vax pcc. */ | |
4820 | found = 1; | |
4821 | } | |
4822 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' | |
4823 | && ! strcmp (p+3, f_options[j].string)) | |
4824 | { | |
4825 | *f_options[j].variable = ! f_options[j].on_value; | |
4826 | found = 1; | |
4827 | } | |
4828 | } | |
4829 | ||
4830 | if (found) | |
4831 | ; | |
8c660648 JL |
4832 | #ifdef HAIFA |
4833 | #ifdef INSN_SCHEDULING | |
4834 | else if (!strncmp (p, "sched-verbose-",14)) | |
4835 | fix_sched_param("verbose",&p[14]); | |
8c660648 JL |
4836 | #endif |
4837 | #endif /* HAIFA */ | |
4291d9c8 RS |
4838 | else if (!strncmp (p, "fixed-", 6)) |
4839 | fix_register (&p[6], 1, 1); | |
4840 | else if (!strncmp (p, "call-used-", 10)) | |
4841 | fix_register (&p[10], 0, 1); | |
4842 | else if (!strncmp (p, "call-saved-", 11)) | |
4843 | fix_register (&p[11], 0, 0); | |
b99933c7 | 4844 | else |
4291d9c8 RS |
4845 | error ("Invalid option `%s'", argv[i]); |
4846 | } | |
4847 | else if (str[0] == 'O') | |
4848 | { | |
4849 | register char *p = str+1; | |
c6aded7c | 4850 | if (*p == 's') |
4291d9c8 | 4851 | p++; |
c6aded7c AG |
4852 | else |
4853 | while (*p && *p >= '0' && *p <= '9') | |
4854 | p++; | |
4291d9c8 RS |
4855 | if (*p == '\0') |
4856 | ; | |
4857 | else | |
4858 | error ("Invalid option `%s'", argv[i]); | |
4859 | } | |
4860 | else if (!strcmp (str, "pedantic")) | |
4861 | pedantic = 1; | |
4862 | else if (!strcmp (str, "pedantic-errors")) | |
4863 | flag_pedantic_errors = pedantic = 1; | |
4291d9c8 RS |
4864 | else if (!strcmp (str, "quiet")) |
4865 | quiet_flag = 1; | |
4866 | else if (!strcmp (str, "version")) | |
4867 | version_flag = 1; | |
4868 | else if (!strcmp (str, "w")) | |
4869 | inhibit_warnings = 1; | |
4870 | else if (!strcmp (str, "W")) | |
4871 | { | |
4872 | extra_warnings = 1; | |
fa1a4543 RS |
4873 | /* We save the value of warn_uninitialized, since if they put |
4874 | -Wuninitialized on the command line, we need to generate a | |
4875 | warning about not using it without also specifying -O. */ | |
4876 | if (warn_uninitialized != 1) | |
4877 | warn_uninitialized = 2; | |
4291d9c8 RS |
4878 | } |
4879 | else if (str[0] == 'W') | |
4880 | { | |
4291d9c8 RS |
4881 | register char *p = &str[1]; |
4882 | int found = 0; | |
4883 | ||
4884 | /* Some kind of -W option. | |
4885 | P's value is the option sans `-W'. | |
4886 | Search for it in the table of options. */ | |
4887 | ||
4888 | for (j = 0; | |
4889 | !found && j < sizeof (W_options) / sizeof (W_options[0]); | |
4890 | j++) | |
4891 | { | |
4892 | if (!strcmp (p, W_options[j].string)) | |
4893 | { | |
4894 | *W_options[j].variable = W_options[j].on_value; | |
4895 | /* A goto here would be cleaner, | |
4896 | but breaks the vax pcc. */ | |
4897 | found = 1; | |
4898 | } | |
4899 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' | |
4900 | && ! strcmp (p+3, W_options[j].string)) | |
4901 | { | |
4902 | *W_options[j].variable = ! W_options[j].on_value; | |
4903 | found = 1; | |
4904 | } | |
4905 | } | |
4906 | ||
4907 | if (found) | |
4908 | ; | |
4909 | else if (!strncmp (p, "id-clash-", 9)) | |
4910 | { | |
4911 | char *endp = p + 9; | |
4912 | ||
4913 | while (*endp) | |
4914 | { | |
4915 | if (*endp >= '0' && *endp <= '9') | |
4916 | endp++; | |
4917 | else | |
7085b873 RS |
4918 | { |
4919 | error ("Invalid option `%s'", argv[i]); | |
4920 | goto id_clash_lose; | |
4921 | } | |
4291d9c8 RS |
4922 | } |
4923 | warn_id_clash = 1; | |
4924 | id_clash_len = atoi (str + 10); | |
7085b873 | 4925 | id_clash_lose: ; |
4291d9c8 | 4926 | } |
b51e9c62 RK |
4927 | else if (!strncmp (p, "larger-than-", 12)) |
4928 | { | |
4929 | char *endp = p + 12; | |
4930 | ||
4931 | while (*endp) | |
4932 | { | |
4933 | if (*endp >= '0' && *endp <= '9') | |
4934 | endp++; | |
4935 | else | |
4936 | { | |
4937 | error ("Invalid option `%s'", argv[i]); | |
4938 | goto larger_than_lose; | |
4939 | } | |
4940 | } | |
4941 | warn_larger_than = 1; | |
4942 | larger_than_size = atoi (str + 13); | |
4943 | larger_than_lose: ; | |
4944 | } | |
4291d9c8 RS |
4945 | else |
4946 | error ("Invalid option `%s'", argv[i]); | |
4947 | } | |
4948 | else if (!strcmp (str, "p")) | |
ca695ac9 | 4949 | { |
c2d12c8b | 4950 | profile_flag = 1; |
ca695ac9 | 4951 | } |
4291d9c8 RS |
4952 | else if (!strcmp (str, "a")) |
4953 | { | |
4954 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
4955 | warning ("`-a' option (basic block profile) not supported"); | |
4956 | #else | |
ec6c615d RK |
4957 | profile_block_flag = (profile_block_flag < 2) ? 1 : 3; |
4958 | #endif | |
4959 | } | |
4960 | else if (!strcmp (str, "ax")) | |
4961 | { | |
4962 | #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
4963 | warning ("`-ax' option (jump profiling) not supported"); | |
4964 | #else | |
4965 | profile_block_flag = (!profile_block_flag | |
4966 | || profile_block_flag == 2) ? 2 : 3; | |
4291d9c8 RS |
4967 | #endif |
4968 | } | |
4969 | else if (str[0] == 'g') | |
4970 | { | |
4291d9c8 RS |
4971 | unsigned len; |
4972 | unsigned level; | |
ff482cef DE |
4973 | /* A lot of code assumes write_symbols == NO_DEBUG if the |
4974 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4975 | of what debugging type has been selected). This records the | |
4976 | selected type. It is an error to specify more than one | |
4977 | debugging type. */ | |
4978 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
4979 | /* Non-zero if debugging format has been explicitly set. | |
4980 | -g and -ggdb don't explicitly set the debugging format so | |
4981 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4982 | static int type_explicitly_set_p = 0; | |
ff482cef | 4983 | /* Indexed by enum debug_info_type. */ |
87e11268 | 4984 | static const char *debug_type_names[] = |
b8468bc7 | 4985 | { |
9a666dda | 4986 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff" |
ff482cef | 4987 | }; |
4291d9c8 | 4988 | |
ff482cef DE |
4989 | /* Look up STR in the table. */ |
4990 | for (da = debug_args; da->arg; da++) | |
4991 | { | |
9a666dda | 4992 | if (! strncmp (str, da->arg, strlen (da->arg))) |
ff482cef DE |
4993 | { |
4994 | enum debug_info_type type = da->debug_type; | |
9a666dda JM |
4995 | char *p, *q; |
4996 | ||
4997 | p = str + strlen (da->arg); | |
4998 | if (*p && (*p < '0' || *p > '9')) | |
4999 | continue; | |
5d38efae | 5000 | len = p - str; |
e9a25f70 | 5001 | q = p; |
9a666dda JM |
5002 | while (*q && (*q >= '0' && *q <= '9')) |
5003 | q++; | |
5004 | if (*p) | |
33e5c8c3 JM |
5005 | { |
5006 | level = atoi (p); | |
5007 | if (len > 1 && !strncmp (str, "gdwarf", len)) | |
5008 | { | |
5009 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
5010 | level, level); | |
5011 | if (level == 2) | |
5012 | error ("use -gdwarf-2 for DWARF v2"); | |
5013 | } | |
5014 | } | |
9a666dda JM |
5015 | else |
5016 | level = 2; /* default debugging info level */ | |
5017 | if (*q || level > 3) | |
5018 | { | |
5019 | warning ("invalid debug level specification in option: `-%s'", | |
5020 | str); | |
5021 | /* ??? This error message is incorrect in the case of | |
5022 | -g4 -g. */ | |
5023 | warning ("no debugging information will be generated"); | |
5024 | level = 0; | |
5025 | } | |
5026 | ||
ff482cef | 5027 | if (type == NO_DEBUG) |
fe0986b4 JM |
5028 | { |
5029 | type = PREFERRED_DEBUGGING_TYPE; | |
5030 | if (len > 1 && strncmp (str, "ggdb", len) == 0) | |
5031 | { | |
deabc777 | 5032 | #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2) |
fe0986b4 | 5033 | type = DWARF2_DEBUG; |
417b0fa2 JW |
5034 | #else |
5035 | #ifdef DBX_DEBUGGING_INFO | |
fe0986b4 | 5036 | type = DBX_DEBUG; |
417b0fa2 | 5037 | #endif |
fe0986b4 JM |
5038 | #endif |
5039 | } | |
5040 | } | |
ff482cef | 5041 | |
e38eaffd RK |
5042 | if (type == NO_DEBUG) |
5043 | warning ("`-%s' not supported by this configuration of GCC", | |
5044 | str); | |
5045 | ||
ff482cef DE |
5046 | /* Does it conflict with an already selected type? */ |
5047 | if (type_explicitly_set_p | |
5048 | /* -g/-ggdb don't conflict with anything */ | |
5049 | && da->debug_type != NO_DEBUG | |
5050 | && type != selected_debug_type) | |
5051 | warning ("`-%s' ignored, conflicts with `-g%s'", | |
5052 | str, debug_type_names[(int) selected_debug_type]); | |
5053 | else | |
5054 | { | |
5055 | /* If the format has already been set, -g/-ggdb | |
5056 | only change the debug level. */ | |
5057 | if (type_explicitly_set_p | |
5058 | && da->debug_type == NO_DEBUG) | |
5059 | ; /* don't change debugging type */ | |
5060 | else | |
5061 | { | |
5062 | selected_debug_type = type; | |
5063 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
5064 | } | |
5065 | write_symbols = (level == 0 | |
5066 | ? NO_DEBUG | |
5067 | : selected_debug_type); | |
5068 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
5069 | debug_info_level = (enum debug_info_level) level; | |
5070 | } | |
5071 | break; | |
5072 | } | |
5073 | } | |
5074 | if (! da->arg) | |
7276e85d RK |
5075 | warning ("`-%s' not supported by this configuration of GCC", |
5076 | str); | |
4291d9c8 RS |
5077 | } |
5078 | else if (!strcmp (str, "o")) | |
5079 | { | |
5080 | asm_file_name = argv[++i]; | |
5081 | } | |
5082 | else if (str[0] == 'G') | |
5083 | { | |
5084 | g_switch_set = TRUE; | |
5085 | g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]); | |
5086 | } | |
f246a305 RS |
5087 | else if (!strncmp (str, "aux-info", 8)) |
5088 | { | |
5089 | flag_gen_aux_info = 1; | |
5090 | aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]); | |
5091 | } | |
b8468bc7 NC |
5092 | else if (!strcmp (str, "-help")) |
5093 | { | |
5094 | display_help (); | |
5095 | exit (0); | |
5096 | } | |
4291d9c8 RS |
5097 | else |
5098 | error ("Invalid option `%s'", argv[i]); | |
5099 | } | |
5100 | else if (argv[i][0] == '+') | |
b99933c7 | 5101 | error ("Invalid option `%s'", argv[i]); |
4291d9c8 RS |
5102 | else |
5103 | filename = argv[i]; | |
5104 | } | |
5105 | ||
f602c208 RK |
5106 | /* Checker uses the frame pointer. */ |
5107 | if (flag_check_memory_usage) | |
5108 | flag_omit_frame_pointer = 0; | |
5109 | ||
f246a305 RS |
5110 | if (optimize == 0) |
5111 | { | |
a2468e45 BK |
5112 | /* Inlining does not work if not optimizing, |
5113 | so force it not to be done. */ | |
f246a305 RS |
5114 | flag_no_inline = 1; |
5115 | warn_inline = 0; | |
a2468e45 BK |
5116 | |
5117 | /* The c_decode_option and lang_decode_option functions set | |
5118 | this to `2' if -Wall is used, so we can avoid giving out | |
5119 | lots of errors for people who don't realize what -Wall does. */ | |
5120 | if (warn_uninitialized == 1) | |
5121 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
5122 | } |
5123 | ||
4291d9c8 RS |
5124 | #ifdef OVERRIDE_OPTIONS |
5125 | /* Some machines may reject certain combinations of options. */ | |
5126 | OVERRIDE_OPTIONS; | |
5127 | #endif | |
5128 | ||
d1485032 JM |
5129 | if (exceptions_via_longjmp == 2) |
5130 | { | |
5131 | #ifdef DWARF2_UNWIND_INFO | |
5132 | exceptions_via_longjmp = ! DWARF2_UNWIND_INFO; | |
5133 | #else | |
5134 | exceptions_via_longjmp = 1; | |
5135 | #endif | |
5136 | } | |
5137 | ||
ec6c615d RK |
5138 | if (profile_block_flag == 3) |
5139 | { | |
5140 | warning ("`-ax' and `-a' are conflicting options. `-a' ignored."); | |
5141 | profile_block_flag = 2; | |
5142 | } | |
5143 | ||
4291d9c8 RS |
5144 | /* Unrolling all loops implies that standard loop unrolling must also |
5145 | be done. */ | |
5146 | if (flag_unroll_all_loops) | |
5147 | flag_unroll_loops = 1; | |
5148 | /* Loop unrolling requires that strength_reduction be on also. Silently | |
5149 | turn on strength reduction here if it isn't already on. Also, the loop | |
5150 | unrolling code assumes that cse will be run after loop, so that must | |
5151 | be turned on also. */ | |
5152 | if (flag_unroll_loops) | |
5153 | { | |
5154 | flag_strength_reduce = 1; | |
5155 | flag_rerun_cse_after_loop = 1; | |
5156 | } | |
5157 | ||
5158 | /* Warn about options that are not supported on this machine. */ | |
5159 | #ifndef INSN_SCHEDULING | |
5160 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
5161 | warning ("instruction scheduling not supported on this target machine"); | |
5162 | #endif | |
5163 | #ifndef DELAY_SLOTS | |
5164 | if (flag_delayed_branch) | |
5165 | warning ("this target machine does not have delayed branches"); | |
5166 | #endif | |
5167 | ||
19283265 RH |
5168 | user_label_prefix = USER_LABEL_PREFIX; |
5169 | if (flag_leading_underscore != -1) | |
5170 | { | |
5171 | /* If the default prefix is more complicated than "" or "_", | |
5172 | issue a warning and ignore this option. */ | |
5173 | if (user_label_prefix[0] == 0 || | |
5174 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
5175 | { | |
5176 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
5177 | } | |
5178 | else | |
5179 | warning ("-f%sleading-underscore not supported on this target machine", | |
5180 | flag_leading_underscore ? "" : "no-"); | |
5181 | } | |
5182 | ||
4291d9c8 RS |
5183 | /* If we are in verbose mode, write out the version and maybe all the |
5184 | option flags in use. */ | |
5185 | if (version_flag) | |
5186 | { | |
3d5cdd42 | 5187 | print_version (stderr, ""); |
4291d9c8 | 5188 | if (! quiet_flag) |
3d5cdd42 | 5189 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
5190 | } |
5191 | ||
4291d9c8 RS |
5192 | compile_file (filename); |
5193 | ||
cae21ae8 | 5194 | #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) |
4291d9c8 RS |
5195 | if (flag_print_mem) |
5196 | { | |
5197 | char *lim = (char *) sbrk (0); | |
5198 | ||
e016950d | 5199 | fprintf (stderr, "Data size %ld.\n", (long)(lim - (char *) &environ)); |
4291d9c8 RS |
5200 | fflush (stderr); |
5201 | ||
e9a25f70 | 5202 | #ifndef __MSDOS__ |
4291d9c8 RS |
5203 | #ifdef USG |
5204 | system ("ps -l 1>&2"); | |
5205 | #else /* not USG */ | |
5206 | system ("ps v"); | |
5207 | #endif /* not USG */ | |
e9a25f70 | 5208 | #endif |
4291d9c8 | 5209 | } |
cae21ae8 | 5210 | #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) */ |
4291d9c8 RS |
5211 | |
5212 | if (errorcount) | |
5213 | exit (FATAL_EXIT_CODE); | |
5214 | if (sorrycount) | |
5215 | exit (FATAL_EXIT_CODE); | |
5216 | exit (SUCCESS_EXIT_CODE); | |
299846f2 | 5217 | return 0; |
4291d9c8 RS |
5218 | } |
5219 | \f | |
5220 | /* Decode -m switches. */ | |
4291d9c8 RS |
5221 | /* Decode the switch -mNAME. */ |
5222 | ||
114791ea | 5223 | static void |
4291d9c8 | 5224 | set_target_switch (name) |
87e11268 | 5225 | const char *name; |
4291d9c8 | 5226 | { |
85066503 | 5227 | register size_t j; |
4291d9c8 RS |
5228 | int valid = 0; |
5229 | ||
5230 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
5231 | if (!strcmp (target_switches[j].name, name)) | |
5232 | { | |
5233 | if (target_switches[j].value < 0) | |
5234 | target_flags &= ~-target_switches[j].value; | |
5235 | else | |
5236 | target_flags |= target_switches[j].value; | |
5237 | valid = 1; | |
5238 | } | |
5239 | ||
5240 | #ifdef TARGET_OPTIONS | |
5241 | if (!valid) | |
5242 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) | |
5243 | { | |
5244 | int len = strlen (target_options[j].prefix); | |
5245 | if (!strncmp (target_options[j].prefix, name, len)) | |
5246 | { | |
5247 | *target_options[j].variable = name + len; | |
5248 | valid = 1; | |
5249 | } | |
5250 | } | |
5251 | #endif | |
5252 | ||
5253 | if (!valid) | |
5254 | error ("Invalid option `%s'", name); | |
5255 | } | |
5256 | \f | |
3d5cdd42 DE |
5257 | /* Print version information to FILE. |
5258 | Each line begins with INDENT (for the case where FILE is the | |
5259 | assembler output file). */ | |
4291d9c8 | 5260 | |
114791ea | 5261 | static void |
3d5cdd42 DE |
5262 | print_version (file, indent) |
5263 | FILE *file; | |
87e11268 | 5264 | const char *indent; |
4291d9c8 | 5265 | { |
3d5cdd42 DE |
5266 | fprintf (file, "%s%s%s version %s", indent, *indent != 0 ? " " : "", |
5267 | language_string, version_string); | |
5268 | fprintf (file, " (%s)", TARGET_NAME); | |
5269 | #ifdef __GNUC__ | |
5270 | #ifndef __VERSION__ | |
5271 | #define __VERSION__ "[unknown]" | |
5272 | #endif | |
5273 | fprintf (file, " compiled by GNU C version %s.\n", __VERSION__); | |
5274 | #else | |
5275 | fprintf (file, " compiled by CC.\n"); | |
5276 | #endif | |
5277 | } | |
4291d9c8 | 5278 | |
3d5cdd42 | 5279 | /* Print an option value and return the adjusted position in the line. |
309a8875 DE |
5280 | ??? We don't handle error returns from fprintf (disk full); presumably |
5281 | other code will catch a disk full though. */ | |
4291d9c8 | 5282 | |
114791ea | 5283 | static int |
3d5cdd42 DE |
5284 | print_single_switch (file, pos, max, indent, sep, term, type, name) |
5285 | FILE *file; | |
5286 | int pos, max; | |
87e11268 | 5287 | const char *indent, *sep, *term, *type, *name; |
3d5cdd42 | 5288 | { |
309a8875 DE |
5289 | /* The ultrix fprintf returns 0 on success, so compute the result we want |
5290 | here since we need it for the following test. */ | |
5291 | int len = strlen (sep) + strlen (type) + strlen (name); | |
5292 | ||
3d5cdd42 | 5293 | if (pos != 0 |
309a8875 | 5294 | && pos + len > max) |
4291d9c8 | 5295 | { |
3d5cdd42 DE |
5296 | fprintf (file, "%s", term); |
5297 | pos = 0; | |
4291d9c8 | 5298 | } |
3d5cdd42 DE |
5299 | if (pos == 0) |
5300 | { | |
309a8875 DE |
5301 | fprintf (file, "%s", indent); |
5302 | pos = strlen (indent); | |
3d5cdd42 | 5303 | } |
309a8875 DE |
5304 | fprintf (file, "%s%s%s", sep, type, name); |
5305 | pos += len; | |
3d5cdd42 | 5306 | return pos; |
4291d9c8 RS |
5307 | } |
5308 | ||
3d5cdd42 DE |
5309 | /* Print active target switches to FILE. |
5310 | POS is the current cursor position and MAX is the size of a "line". | |
5311 | Each line begins with INDENT and ends with TERM. | |
5312 | Each switch is separated from the next by SEP. */ | |
4291d9c8 | 5313 | |
25074193 | 5314 | static void |
3d5cdd42 DE |
5315 | print_switch_values (file, pos, max, indent, sep, term) |
5316 | FILE *file; | |
5317 | int pos, max; | |
87e11268 | 5318 | const char *indent, *sep, *term; |
4291d9c8 | 5319 | { |
85066503 | 5320 | size_t j; |
3d5cdd42 DE |
5321 | char **p; |
5322 | ||
5323 | /* Print the options as passed. */ | |
4291d9c8 | 5324 | |
3d5cdd42 DE |
5325 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
5326 | "options passed: ", ""); | |
5327 | ||
520e7ff5 | 5328 | for (p = &save_argv[1]; *p != NULL; p++) |
3d5cdd42 DE |
5329 | if (**p == '-') |
5330 | { | |
5331 | /* Ignore these. */ | |
520e7ff5 DE |
5332 | if (strcmp (*p, "-o") == 0) |
5333 | { | |
5334 | if (p[1] != NULL) | |
5335 | p++; | |
5336 | continue; | |
5337 | } | |
3d5cdd42 DE |
5338 | if (strcmp (*p, "-quiet") == 0) |
5339 | continue; | |
5340 | if (strcmp (*p, "-version") == 0) | |
5341 | continue; | |
5342 | if ((*p)[1] == 'd') | |
5343 | continue; | |
5344 | ||
5345 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
5346 | } | |
5347 | if (pos > 0) | |
5348 | fprintf (file, "%s", term); | |
5349 | ||
5350 | /* Print the -f and -m options that have been enabled. | |
5351 | We don't handle language specific options but printing argv | |
5352 | should suffice. */ | |
5353 | ||
5354 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
5355 | "options enabled: ", ""); | |
4291d9c8 RS |
5356 | |
5357 | for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++) | |
5358 | if (*f_options[j].variable == f_options[j].on_value) | |
3d5cdd42 DE |
5359 | pos = print_single_switch (file, pos, max, indent, sep, term, |
5360 | "-f", f_options[j].string); | |
4291d9c8 | 5361 | |
3d5cdd42 | 5362 | /* Print target specific options. */ |
4291d9c8 RS |
5363 | |
5364 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
5365 | if (target_switches[j].name[0] != '\0' | |
5366 | && target_switches[j].value > 0 | |
5367 | && ((target_switches[j].value & target_flags) | |
5368 | == target_switches[j].value)) | |
3d5cdd42 DE |
5369 | { |
5370 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
5371 | "-m", target_switches[j].name); | |
3d5cdd42 DE |
5372 | } |
5373 | ||
5374 | #ifdef TARGET_OPTIONS | |
5375 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) | |
5376 | if (*target_options[j].variable != NULL) | |
5377 | { | |
5378 | char prefix[256]; | |
5379 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
5380 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
5381 | prefix, *target_options[j].variable); | |
5382 | } | |
5383 | #endif | |
4291d9c8 | 5384 | |
3d5cdd42 | 5385 | fprintf (file, "%s", term); |
4291d9c8 | 5386 | } |
9a666dda JM |
5387 | |
5388 | /* Record the beginning of a new source file, named FILENAME. */ | |
5389 | ||
5390 | void | |
5391 | debug_start_source_file (filename) | |
5392 | register char *filename; | |
5393 | { | |
5394 | #ifdef DBX_DEBUGGING_INFO | |
5395 | if (write_symbols == DBX_DEBUG) | |
5396 | dbxout_start_new_source_file (filename); | |
5397 | #endif | |
5398 | #ifdef DWARF_DEBUGGING_INFO | |
5399 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5400 | && write_symbols == DWARF_DEBUG) | |
5401 | dwarfout_start_new_source_file (filename); | |
5402 | #endif /* DWARF_DEBUGGING_INFO */ | |
5403 | #ifdef DWARF2_DEBUGGING_INFO | |
5404 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5405 | && write_symbols == DWARF2_DEBUG) | |
5406 | dwarf2out_start_source_file (filename); | |
5407 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
5408 | #ifdef SDB_DEBUGGING_INFO |
5409 | if (write_symbols == SDB_DEBUG) | |
5410 | sdbout_start_new_source_file (filename); | |
5411 | #endif | |
9a666dda JM |
5412 | } |
5413 | ||
5414 | /* Record the resumption of a source file. LINENO is the line number in | |
5415 | the source file we are returning to. */ | |
5416 | ||
5417 | void | |
5418 | debug_end_source_file (lineno) | |
c84e2712 | 5419 | register unsigned lineno ATTRIBUTE_UNUSED; |
9a666dda JM |
5420 | { |
5421 | #ifdef DBX_DEBUGGING_INFO | |
5422 | if (write_symbols == DBX_DEBUG) | |
5423 | dbxout_resume_previous_source_file (); | |
5424 | #endif | |
5425 | #ifdef DWARF_DEBUGGING_INFO | |
5426 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5427 | && write_symbols == DWARF_DEBUG) | |
5428 | dwarfout_resume_previous_source_file (lineno); | |
5429 | #endif /* DWARF_DEBUGGING_INFO */ | |
5430 | #ifdef DWARF2_DEBUGGING_INFO | |
5431 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5432 | && write_symbols == DWARF2_DEBUG) | |
5433 | dwarf2out_end_source_file (); | |
5434 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
5435 | #ifdef SDB_DEBUGGING_INFO |
5436 | if (write_symbols == SDB_DEBUG) | |
5437 | sdbout_resume_previous_source_file (); | |
5438 | #endif | |
9a666dda JM |
5439 | } |
5440 | ||
5441 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
5442 | the tail part of the directive line, i.e. the part which is past the | |
5443 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
5444 | ||
5445 | void | |
5446 | debug_define (lineno, buffer) | |
5447 | register unsigned lineno; | |
5448 | register char *buffer; | |
5449 | { | |
5450 | #ifdef DWARF_DEBUGGING_INFO | |
5451 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5452 | && write_symbols == DWARF_DEBUG) | |
5453 | dwarfout_define (lineno, buffer); | |
5454 | #endif /* DWARF_DEBUGGING_INFO */ | |
5455 | #ifdef DWARF2_DEBUGGING_INFO | |
5456 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5457 | && write_symbols == DWARF2_DEBUG) | |
5458 | dwarf2out_define (lineno, buffer); | |
5459 | #endif /* DWARF2_DEBUGGING_INFO */ | |
5460 | } | |
5461 | ||
5462 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
5463 | the tail part of the directive line, i.e. the part which is past the | |
5464 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
5465 | ||
5466 | void | |
5467 | debug_undef (lineno, buffer) | |
5468 | register unsigned lineno; | |
5469 | register char *buffer; | |
5470 | { | |
5471 | #ifdef DWARF_DEBUGGING_INFO | |
5472 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5473 | && write_symbols == DWARF_DEBUG) | |
5474 | dwarfout_undef (lineno, buffer); | |
5475 | #endif /* DWARF_DEBUGGING_INFO */ | |
5476 | #ifdef DWARF2_DEBUGGING_INFO | |
5477 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5478 | && write_symbols == DWARF2_DEBUG) | |
5479 | dwarf2out_undef (lineno, buffer); | |
5480 | #endif /* DWARF2_DEBUGGING_INFO */ | |
5481 | } |