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4291d9c8 | 1 | /* Top level of GNU C compiler |
16411ea6 | 2 | Copyright (C) 1987, 88, 89, 92, 93, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
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" | |
e0e2a8da | 27 | #ifdef __STDC__ |
04fe4385 | 28 | #include <stdarg.h> |
e0e2a8da | 29 | #else |
04fe4385 | 30 | #include <varargs.h> |
e0e2a8da | 31 | #endif |
4291d9c8 RS |
32 | #include <stdio.h> |
33 | #include <signal.h> | |
34 | #include <setjmp.h> | |
eb711c86 | 35 | #include <sys/types.h> |
ea9182cd | 36 | #include <ctype.h> |
4291d9c8 RS |
37 | #include <sys/stat.h> |
38 | ||
39 | #ifdef USG | |
40 | #undef FLOAT | |
41 | #include <sys/param.h> | |
42 | /* This is for hpux. It is a real screw. They should change hpux. */ | |
43 | #undef FLOAT | |
44 | #include <sys/times.h> | |
45 | #include <time.h> /* Correct for hpux at least. Is it good on other USG? */ | |
46 | #undef FFS /* Some systems define this in param.h. */ | |
47 | #else | |
48 | #ifndef VMS | |
49 | #include <sys/time.h> | |
50 | #include <sys/resource.h> | |
51 | #endif | |
52 | #endif | |
53 | ||
54 | #include "input.h" | |
55 | #include "tree.h" | |
56 | /* #include "c-tree.h" */ | |
57 | #include "rtl.h" | |
58 | #include "flags.h" | |
59 | #include "insn-attr.h" | |
d0d4af87 | 60 | #include "defaults.h" |
f246a305 RS |
61 | |
62 | #ifdef XCOFF_DEBUGGING_INFO | |
63 | #include "xcoffout.h" | |
64 | #endif | |
ca695ac9 JB |
65 | |
66 | #include "bytecode.h" | |
67 | #include "bc-emit.h" | |
4291d9c8 RS |
68 | \f |
69 | #ifdef VMS | |
70 | /* The extra parameters substantially improve the I/O performance. */ | |
71 | static FILE * | |
72 | VMS_fopen (fname, type) | |
73 | char * fname; | |
74 | char * type; | |
75 | { | |
76 | if (strcmp (type, "w") == 0) | |
77 | return fopen (fname, type, "mbc=16", "deq=64", "fop=tef", "shr=nil"); | |
78 | return fopen (fname, type, "mbc=16"); | |
79 | } | |
80 | #define fopen VMS_fopen | |
81 | #endif | |
82 | ||
83 | #ifndef DEFAULT_GDB_EXTENSIONS | |
84 | #define DEFAULT_GDB_EXTENSIONS 1 | |
85 | #endif | |
86 | ||
87 | extern int rtx_equal_function_value_matters; | |
88 | ||
72c8bb7f | 89 | #if ! (defined (VMS) || defined (OS2)) |
4291d9c8 | 90 | extern char **environ; |
4d7e336b | 91 | #endif |
4291d9c8 RS |
92 | extern char *version_string, *language_string; |
93 | ||
b0316e35 RS |
94 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
95 | to ASM_FINISH_DECLARE_OBJECT. */ | |
96 | ||
97 | extern int size_directive_output; | |
5e10b3cc | 98 | extern tree last_assemble_variable_decl; |
b0316e35 | 99 | |
4291d9c8 RS |
100 | extern void init_lex (); |
101 | extern void init_decl_processing (); | |
102 | extern void init_obstacks (); | |
103 | extern void init_tree_codes (); | |
104 | extern void init_rtl (); | |
34d0205f | 105 | extern void init_regs (); |
4291d9c8 RS |
106 | extern void init_optabs (); |
107 | extern void init_stmt (); | |
108 | extern void init_reg_sets (); | |
109 | extern void dump_flow_info (); | |
110 | extern void dump_sched_info (); | |
111 | extern void dump_local_alloc (); | |
112 | ||
113 | void rest_of_decl_compilation (); | |
d18225c4 RK |
114 | void error_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); |
115 | void error_with_decl PVPROTO((tree decl, char *s, ...)); | |
116 | void error_for_asm PVPROTO((rtx insn, char *s, ...)); | |
117 | void error PVPROTO((char *s, ...)); | |
118 | void fatal PVPROTO((char *s, ...)); | |
119 | void warning_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); | |
120 | void warning_with_decl PVPROTO((tree decl, char *s, ...)); | |
121 | void warning_for_asm PVPROTO((rtx insn, char *s, ...)); | |
122 | void warning PVPROTO((char *s, ...)); | |
123 | void pedwarn PVPROTO((char *s, ...)); | |
124 | void pedwarn_with_decl PVPROTO((tree decl, char *s, ...)); | |
125 | void pedwarn_with_file_and_line PVPROTO((char *file, int line, char *s, ...)); | |
126 | void sorry PVPROTO((char *s, ...)); | |
127 | void really_sorry PVPROTO((char *s, ...)); | |
4291d9c8 RS |
128 | void fancy_abort (); |
129 | #ifndef abort | |
130 | void abort (); | |
131 | #endif | |
132 | void set_target_switch (); | |
133 | static void print_switch_values (); | |
134 | static char *decl_name (); | |
135 | ||
136 | /* Name of program invoked, sans directories. */ | |
137 | ||
138 | char *progname; | |
139 | ||
140 | /* Copy of arguments to main. */ | |
141 | int save_argc; | |
142 | char **save_argv; | |
143 | \f | |
144 | /* Name of current original source file (what was input to cpp). | |
145 | This comes from each #-command in the actual input. */ | |
146 | ||
147 | char *input_filename; | |
148 | ||
149 | /* Name of top-level original source file (what was input to cpp). | |
150 | This comes from the #-command at the beginning of the actual input. | |
151 | If there isn't any there, then this is the cc1 input file name. */ | |
152 | ||
153 | char *main_input_filename; | |
154 | ||
155 | /* Stream for reading from the input file. */ | |
156 | ||
157 | FILE *finput; | |
158 | ||
159 | /* Current line number in real source file. */ | |
160 | ||
161 | int lineno; | |
162 | ||
163 | /* Stack of currently pending input files. */ | |
164 | ||
165 | struct file_stack *input_file_stack; | |
166 | ||
167 | /* Incremented on each change to input_file_stack. */ | |
168 | int input_file_stack_tick; | |
169 | ||
170 | /* FUNCTION_DECL for function now being parsed or compiled. */ | |
171 | ||
172 | extern tree current_function_decl; | |
173 | ||
174 | /* Name to use as base of names for dump output files. */ | |
175 | ||
176 | char *dump_base_name; | |
177 | ||
178 | /* Bit flags that specify the machine subtype we are compiling for. | |
179 | Bits are tested using macros TARGET_... defined in the tm.h file | |
180 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
181 | ||
182 | extern int target_flags; | |
183 | ||
184 | /* Flags saying which kinds of debugging dump have been requested. */ | |
185 | ||
186 | int rtl_dump = 0; | |
187 | int rtl_dump_and_exit = 0; | |
188 | int jump_opt_dump = 0; | |
189 | int cse_dump = 0; | |
190 | int loop_dump = 0; | |
191 | int cse2_dump = 0; | |
192 | int flow_dump = 0; | |
193 | int combine_dump = 0; | |
194 | int sched_dump = 0; | |
195 | int local_reg_dump = 0; | |
196 | int global_reg_dump = 0; | |
197 | int sched2_dump = 0; | |
198 | int jump2_opt_dump = 0; | |
199 | int dbr_sched_dump = 0; | |
200 | int flag_print_asm_name = 0; | |
201 | int stack_reg_dump = 0; | |
202 | ||
203 | /* Name for output file of assembly code, specified with -o. */ | |
204 | ||
205 | char *asm_file_name; | |
206 | ||
207 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
208 | int g_switch_value; | |
209 | int g_switch_set; | |
210 | ||
211 | /* Type(s) of debugging information we are producing (if any). | |
212 | See flags.h for the definitions of the different possible | |
213 | types of debugging information. */ | |
214 | enum debug_info_type write_symbols = NO_DEBUG; | |
215 | ||
216 | /* Level of debugging information we are producing. See flags.h | |
217 | for the definitions of the different possible levels. */ | |
218 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
219 | ||
a53d0bcc RS |
220 | /* Nonzero means use GNU-only extensions in the generated symbolic |
221 | debugging information. */ | |
222 | /* Currently, this only has an effect when write_symbols is set to | |
223 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
224 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
225 | |
226 | /* Nonzero means do optimizations. -O. | |
227 | Particular numeric values stand for particular amounts of optimization; | |
228 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
229 | ones are not controlled directly by this variable. Instead, they are | |
230 | controlled by individual `flag_...' variables that are defaulted | |
231 | based on this variable. */ | |
232 | ||
233 | int optimize = 0; | |
234 | ||
235 | /* Number of error messages and warning messages so far. */ | |
236 | ||
237 | int errorcount = 0; | |
238 | int warningcount = 0; | |
239 | int sorrycount = 0; | |
240 | ||
ca695ac9 JB |
241 | /* Flag to output bytecode instead of native assembler */ |
242 | int output_bytecode = 0; | |
243 | ||
4291d9c8 RS |
244 | /* Pointer to function to compute the name to use to print a declaration. */ |
245 | ||
246 | char *(*decl_printable_name) (); | |
247 | ||
248 | /* Pointer to function to compute rtl for a language-specific tree code. */ | |
249 | ||
250 | struct rtx_def *(*lang_expand_expr) (); | |
251 | ||
2b599527 RS |
252 | /* Pointer to function to finish handling an incomplete decl at the |
253 | end of compilation. */ | |
254 | ||
255 | void (*incomplete_decl_finalize_hook) () = 0; | |
256 | ||
4291d9c8 RS |
257 | /* Nonzero if generating code to do profiling. */ |
258 | ||
259 | int profile_flag = 0; | |
260 | ||
261 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ | |
262 | ||
263 | int profile_block_flag; | |
264 | ||
265 | /* Nonzero for -pedantic switch: warn about anything | |
266 | that standard spec forbids. */ | |
267 | ||
268 | int pedantic = 0; | |
269 | ||
270 | /* Temporarily suppress certain warnings. | |
271 | This is set while reading code from a system header file. */ | |
272 | ||
273 | int in_system_header = 0; | |
274 | ||
275 | /* Nonzero means do stupid register allocation. | |
276 | Currently, this is 1 if `optimize' is 0. */ | |
277 | ||
278 | int obey_regdecls = 0; | |
279 | ||
280 | /* Don't print functions as they are compiled and don't print | |
281 | times taken by the various passes. -quiet. */ | |
282 | ||
283 | int quiet_flag = 0; | |
284 | \f | |
285 | /* -f flags. */ | |
286 | ||
287 | /* Nonzero means `char' should be signed. */ | |
288 | ||
289 | int flag_signed_char; | |
290 | ||
291 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
292 | ||
293 | int flag_short_enums; | |
294 | ||
295 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
296 | be saved across function calls, if that produces overall better code. | |
297 | Optional now, so people can test it. */ | |
298 | ||
299 | #ifdef DEFAULT_CALLER_SAVES | |
300 | int flag_caller_saves = 1; | |
301 | #else | |
302 | int flag_caller_saves = 0; | |
303 | #endif | |
304 | ||
958ec8ca JW |
305 | /* Nonzero if structures and unions should be returned in memory. |
306 | ||
307 | This should only be defined if compatibility with another compiler or | |
308 | with an ABI is needed, because it results in slower code. */ | |
309 | ||
310 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
311 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
312 | #endif | |
313 | ||
4291d9c8 RS |
314 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
315 | ||
958ec8ca | 316 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
317 | |
318 | /* Nonzero for -fforce-mem: load memory value into a register | |
319 | before arithmetic on it. This makes better cse but slower compilation. */ | |
320 | ||
321 | int flag_force_mem = 0; | |
322 | ||
323 | /* Nonzero for -fforce-addr: load memory address into a register before | |
324 | reference to memory. This makes better cse but slower compilation. */ | |
325 | ||
326 | int flag_force_addr = 0; | |
327 | ||
328 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
329 | instead save them up to pop many calls' args with one insns. */ | |
330 | ||
6731a3e3 | 331 | int flag_defer_pop = 0; |
4291d9c8 RS |
332 | |
333 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
334 | in extended-precision registers. */ | |
335 | ||
336 | int flag_float_store = 0; | |
337 | ||
338 | /* Nonzero for -fcse-follow-jumps: | |
339 | have cse follow jumps to do a more extensive job. */ | |
340 | ||
341 | int flag_cse_follow_jumps; | |
342 | ||
8b3686ed RK |
343 | /* Nonzero for -fcse-skip-blocks: |
344 | have cse follow a branch around a block. */ | |
345 | int flag_cse_skip_blocks; | |
346 | ||
4291d9c8 RS |
347 | /* Nonzero for -fexpensive-optimizations: |
348 | perform miscellaneous relatively-expensive optimizations. */ | |
349 | int flag_expensive_optimizations; | |
350 | ||
351 | /* Nonzero for -fthread-jumps: | |
352 | have jump optimize output of loop. */ | |
353 | ||
354 | int flag_thread_jumps; | |
355 | ||
356 | /* Nonzero enables strength-reduction in loop.c. */ | |
357 | ||
358 | int flag_strength_reduce = 0; | |
359 | ||
360 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
361 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
362 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
363 | unrolled. */ | |
364 | ||
365 | int flag_unroll_loops; | |
366 | ||
367 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
368 | This is generally not a win. */ | |
369 | ||
370 | int flag_unroll_all_loops; | |
371 | ||
372 | /* Nonzero for -fwritable-strings: | |
373 | store string constants in data segment and don't uniquize them. */ | |
374 | ||
375 | int flag_writable_strings = 0; | |
376 | ||
377 | /* Nonzero means don't put addresses of constant functions in registers. | |
378 | Used for compiling the Unix kernel, where strange substitutions are | |
379 | done on the assembly output. */ | |
380 | ||
381 | int flag_no_function_cse = 0; | |
382 | ||
383 | /* Nonzero for -fomit-frame-pointer: | |
384 | don't make a frame pointer in simple functions that don't require one. */ | |
385 | ||
386 | int flag_omit_frame_pointer = 0; | |
387 | ||
388 | /* Nonzero to inhibit use of define_optimization peephole opts. */ | |
389 | ||
390 | int flag_no_peephole = 0; | |
391 | ||
43855b28 JL |
392 | /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math |
393 | operations in the interest of optimization. For example it allows | |
394 | GCC to assume arguments to sqrt are nonnegative numbers, allowing | |
395 | faster code for sqrt to be generated. */ | |
396 | ||
397 | int flag_fast_math = 0; | |
398 | ||
4291d9c8 RS |
399 | /* Nonzero means all references through pointers are volatile. */ |
400 | ||
401 | int flag_volatile; | |
c6e75897 RS |
402 | |
403 | /* Nonzero means treat all global and extern variables as global. */ | |
404 | ||
38d4d0c2 | 405 | int flag_volatile_global; |
4291d9c8 RS |
406 | |
407 | /* Nonzero means just do syntax checking; don't output anything. */ | |
408 | ||
409 | int flag_syntax_only = 0; | |
410 | ||
411 | /* Nonzero means to rerun cse after loop optimization. This increases | |
412 | compilation time about 20% and picks up a few more common expressions. */ | |
413 | ||
414 | static int flag_rerun_cse_after_loop; | |
415 | ||
416 | /* Nonzero for -finline-functions: ok to inline functions that look like | |
417 | good inline candidates. */ | |
418 | ||
419 | int flag_inline_functions; | |
420 | ||
421 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 422 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
423 | purposes. */ |
424 | ||
425 | int flag_keep_inline_functions; | |
426 | ||
427 | /* Nonzero means that functions declared `inline' will be treated | |
428 | as `static'. Prevents generation of zillions of copies of unused | |
429 | static inline functions; instead, `inlines' are written out | |
430 | only when actually used. Used in conjunction with -g. Also | |
431 | does the right thing with #pragma interface. */ | |
432 | ||
433 | int flag_no_inline; | |
434 | ||
435 | /* Nonzero means we should be saving declaration info into a .X file. */ | |
436 | ||
437 | int flag_gen_aux_info = 0; | |
438 | ||
f246a305 RS |
439 | /* Specified name of aux-info file. */ |
440 | ||
441 | static char *aux_info_file_name; | |
442 | ||
4291d9c8 RS |
443 | /* Nonzero means make the text shared if supported. */ |
444 | ||
445 | int flag_shared_data; | |
446 | ||
447 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
448 | ||
449 | int flag_delayed_branch; | |
450 | ||
5dab5552 MS |
451 | /* Nonzero means to run cleanups after CALL_EXPRs. */ |
452 | ||
453 | int flag_short_temps; | |
454 | ||
4291d9c8 RS |
455 | /* Nonzero if we are compiling pure (sharable) code. |
456 | Value is 1 if we are doing reasonable (i.e. simple | |
457 | offset into offset table) pic. Value is 2 if we can | |
458 | only perform register offsets. */ | |
459 | ||
460 | int flag_pic; | |
461 | ||
0382002b | 462 | /* Nonzero means place uninitialized global data in the bss section. */ |
4291d9c8 RS |
463 | |
464 | int flag_no_common; | |
465 | ||
466 | /* Nonzero means pretend it is OK to examine bits of target floats, | |
467 | even if that isn't true. The resulting code will have incorrect constants, | |
468 | but the same series of instructions that the native compiler would make. */ | |
469 | ||
470 | int flag_pretend_float; | |
471 | ||
472 | /* Nonzero means change certain warnings into errors. | |
473 | Usually these are warnings about failure to conform to some standard. */ | |
474 | ||
475 | int flag_pedantic_errors = 0; | |
476 | ||
477 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
478 | local_alloc). | |
479 | flag_schedule_insns_after_reload means schedule insns after | |
480 | global_alloc. */ | |
481 | ||
482 | int flag_schedule_insns = 0; | |
483 | int flag_schedule_insns_after_reload = 0; | |
484 | ||
485 | /* -finhibit-size-directive inhibits output of .size for ELF. | |
486 | This is used only for compiling crtstuff.c, | |
487 | and it may be extended to other effects | |
488 | needed for crtstuff.c on other systems. */ | |
489 | int flag_inhibit_size_directive = 0; | |
490 | ||
9a631e8e RS |
491 | /* -fverbose-asm causes extra commentary information to be produced in |
492 | the generated assembly code (to make it more readable). This option | |
493 | is generally only of use to those who actually need to read the | |
494 | generated assembly code (perhaps while debugging the compiler itself). */ | |
495 | ||
496 | int flag_verbose_asm = 0; | |
497 | ||
4291d9c8 | 498 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
499 | (Or, more generally, a linker that handles initializations.) |
500 | -fno-gnu-linker says that collect2 will be used. */ | |
501 | #ifdef USE_COLLECT2 | |
502 | int flag_gnu_linker = 0; | |
503 | #else | |
4291d9c8 | 504 | int flag_gnu_linker = 1; |
d68c507d | 505 | #endif |
4291d9c8 RS |
506 | |
507 | /* Table of language-independent -f options. | |
508 | STRING is the option name. VARIABLE is the address of the variable. | |
509 | ON_VALUE is the value to store in VARIABLE | |
510 | if `-fSTRING' is seen as an option. | |
511 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
512 | ||
513 | struct { char *string; int *variable; int on_value;} f_options[] = | |
514 | { | |
515 | {"float-store", &flag_float_store, 1}, | |
516 | {"volatile", &flag_volatile, 1}, | |
38d4d0c2 | 517 | {"volatile-global", &flag_volatile_global, 1}, |
4291d9c8 RS |
518 | {"defer-pop", &flag_defer_pop, 1}, |
519 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1}, | |
520 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1}, | |
8b3686ed | 521 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1}, |
4291d9c8 RS |
522 | {"expensive-optimizations", &flag_expensive_optimizations, 1}, |
523 | {"thread-jumps", &flag_thread_jumps, 1}, | |
524 | {"strength-reduce", &flag_strength_reduce, 1}, | |
525 | {"unroll-loops", &flag_unroll_loops, 1}, | |
526 | {"unroll-all-loops", &flag_unroll_all_loops, 1}, | |
527 | {"writable-strings", &flag_writable_strings, 1}, | |
528 | {"peephole", &flag_no_peephole, 0}, | |
529 | {"force-mem", &flag_force_mem, 1}, | |
530 | {"force-addr", &flag_force_addr, 1}, | |
531 | {"function-cse", &flag_no_function_cse, 0}, | |
532 | {"inline-functions", &flag_inline_functions, 1}, | |
533 | {"keep-inline-functions", &flag_keep_inline_functions, 1}, | |
534 | {"inline", &flag_no_inline, 0}, | |
535 | {"syntax-only", &flag_syntax_only, 1}, | |
4291d9c8 RS |
536 | {"shared-data", &flag_shared_data, 1}, |
537 | {"caller-saves", &flag_caller_saves, 1}, | |
538 | {"pcc-struct-return", &flag_pcc_struct_return, 1}, | |
958ec8ca | 539 | {"reg-struct-return", &flag_pcc_struct_return, 0}, |
4291d9c8 RS |
540 | {"delayed-branch", &flag_delayed_branch, 1}, |
541 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1}, | |
542 | {"pretend-float", &flag_pretend_float, 1}, | |
543 | {"schedule-insns", &flag_schedule_insns, 1}, | |
544 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1}, | |
545 | {"pic", &flag_pic, 1}, | |
546 | {"PIC", &flag_pic, 2}, | |
43855b28 | 547 | {"fast-math", &flag_fast_math, 1}, |
4291d9c8 RS |
548 | {"common", &flag_no_common, 0}, |
549 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1}, | |
9a631e8e | 550 | {"verbose-asm", &flag_verbose_asm, 1}, |
422e2ed3 | 551 | {"gnu-linker", &flag_gnu_linker, 1}, |
ca695ac9 | 552 | {"bytecode", &output_bytecode, 1} |
4291d9c8 | 553 | }; |
b99933c7 RS |
554 | |
555 | /* Table of language-specific options. */ | |
556 | ||
557 | char *lang_options[] = | |
558 | { | |
4200c8de | 559 | "-ansi", |
8305445b | 560 | "-fallow-single-precision", |
4200c8de | 561 | |
b99933c7 RS |
562 | "-fsigned-bitfields", |
563 | "-funsigned-bitfields", | |
564 | "-fno-signed-bitfields", | |
565 | "-fno-unsigned-bitfields", | |
4200c8de RK |
566 | "-fsigned-char", |
567 | "-funsigned-char", | |
568 | "-fno-signed-char", | |
569 | "-fno-unsigned-char", | |
570 | ||
571 | "-ftraditional", | |
572 | "-traditional", | |
573 | "-fnotraditional", | |
574 | "-fno-traditional", | |
575 | ||
b99933c7 RS |
576 | "-fasm", |
577 | "-fno-asm", | |
578 | "-fbuiltin", | |
579 | "-fno-builtin", | |
4200c8de RK |
580 | "-fcond-mismatch", |
581 | "-fno-cond-mismatch", | |
c7daad38 | 582 | "-fdollars-in-identifiers", |
57f0a224 | 583 | "-fno-dollars-in-identifiers", |
4200c8de RK |
584 | "-fident", |
585 | "-fno-ident", | |
586 | "-fshort-double", | |
587 | "-fno-short-double", | |
588 | "-fshort-enums", | |
589 | "-fno-short-enums", | |
590 | ||
591 | "-Wall", | |
b99933c7 RS |
592 | "-Wcast-qual", |
593 | "-Wno-cast-qual", | |
b99933c7 RS |
594 | "-Wchar-subscripts", |
595 | "-Wno-char-subscripts", | |
b99933c7 RS |
596 | "-Wcomment", |
597 | "-Wno-comment", | |
598 | "-Wcomments", | |
599 | "-Wno-comments", | |
4200c8de RK |
600 | "-Wconversion", |
601 | "-Wno-conversion", | |
602 | "-Wformat", | |
603 | "-Wno-format", | |
b99933c7 RS |
604 | "-Wimport", |
605 | "-Wno-import", | |
4200c8de RK |
606 | "-Wimplicit", |
607 | "-Wno-implicit", | |
f41372d4 RS |
608 | "-Wmissing-braces", |
609 | "-Wno-missing-braces", | |
4200c8de RK |
610 | "-Wmissing-declarations", |
611 | "-Wno-missing-declarations", | |
612 | "-Wmissing-prototypes", | |
613 | "-Wno-missing-prototypes", | |
614 | "-Wnested-externs", | |
615 | "-Wno-nested-externs", | |
616 | "-Wparentheses", | |
617 | "-Wno-parentheses", | |
618 | "-Wpointer-arith", | |
619 | "-Wno-pointer-arith", | |
620 | "-Wredundant-decls", | |
621 | "-Wno-redundant-decls", | |
622 | "-Wstrict-prototypes", | |
623 | "-Wno-strict-prototypes", | |
624 | "-Wtraditional", | |
625 | "-Wno-traditional", | |
626 | "-Wtrigraphs", | |
627 | "-Wno-trigraphs", | |
628 | "-Wwrite-strings", | |
629 | "-Wno-write-strings", | |
b99933c7 RS |
630 | |
631 | /* These are for C++. */ | |
6419d860 RS |
632 | "-+e0", /* gcc.c tacks the `-' on the front. */ |
633 | "-+e1", | |
634 | "-+e2", | |
b99933c7 RS |
635 | "-fall-virtual", |
636 | "-fno-all-virtual", | |
ceb90aa7 RK |
637 | "-falt-external-templates", |
638 | "-fno-alt-external-templates", | |
ceb90aa7 RK |
639 | "-fansi-overloading", |
640 | "-fno-ansi-overloading", | |
641 | "-fcadillac", | |
642 | "-fno-cadillac", | |
643 | "-fconserve-space", | |
644 | "-fno-conserve-space", | |
b99933c7 RS |
645 | "-fdefault-inline", |
646 | "-fno-default-inline", | |
b99933c7 RS |
647 | "-fdossier", |
648 | "-fno-dossier", | |
ceb90aa7 RK |
649 | "-felide-constructors", |
650 | "-fno-elide-constructors", | |
651 | "-fenum-int-equiv", | |
652 | "-fno-enum-int-equiv", | |
e701d556 BK |
653 | "-fexternal-templates", |
654 | "-fno-external-templates", | |
ceb90aa7 RK |
655 | "-fgc", |
656 | "-fno-gc", | |
657 | "-fhandle-exceptions", | |
658 | "-fno-handle-exceptions", | |
e1d9c157 MS |
659 | "-fhandle-signatures", |
660 | "-fno-handle-signatures", | |
2c0d84d6 MS |
661 | "-fhuge-objects", |
662 | "-fno-huge-objects", | |
ceb90aa7 RK |
663 | "-fimplement-inlines", |
664 | "-fno-implement-inlines", | |
665 | "-flabels-ok", | |
666 | "-fno-labels-ok", | |
667 | "-fmemoize-lookups", | |
668 | "-fno-memoize-lookups", | |
669 | "-fnonnull-objects", | |
670 | "-fno-nonnull-objects", | |
671 | "-fsave-memoized", | |
672 | "-fno-save-memoized", | |
5dab5552 MS |
673 | "-fshort-temps", |
674 | "-fno-short-temps", | |
ceb90aa7 RK |
675 | "-fstats", |
676 | "-fno-stats", | |
677 | "-fstrict-prototype", | |
678 | "-fno-strict-prototype", | |
679 | "-fthis-is-variable", | |
680 | "-fno-this-is-variable", | |
151f13be PB |
681 | "-fvtable-thunks", |
682 | "-fno-vtable-thunks", | |
ceb90aa7 RK |
683 | "-fxref", |
684 | "-fno-xref", | |
b99933c7 RS |
685 | |
686 | "-Wreturn-type", | |
687 | "-Wno-return-type", | |
688 | "-Woverloaded-virtual", | |
689 | "-Wno-overloaded-virtual", | |
690 | "-Wenum-clash", | |
691 | "-Wno-enum-clash", | |
a2468e45 BK |
692 | "-Wtemplate-debugging", |
693 | "-Wno-template-debugging", | |
e701d556 BK |
694 | "-Wctor-dtor-privacy", |
695 | "-Wno-ctor-dtor-privacy", | |
cb1fcd8c RK |
696 | "-Wextern-inline", |
697 | "-Wno-extern-inline", | |
65faa6a4 RS |
698 | |
699 | /* these are for obj c */ | |
700 | "-lang-objc", | |
701 | "-gen-decls", | |
f5309ddf TW |
702 | "-fgnu-runtime", |
703 | "-fno-gnu-runtime", | |
704 | "-fnext-runtime", | |
705 | "-fno-next-runtime", | |
65faa6a4 RS |
706 | "-Wselector", |
707 | "-Wno-selector", | |
b800a01b KKT |
708 | "-Wprotocol", |
709 | "-Wno-protocol", | |
a457294f RK |
710 | |
711 | /* This is for GNAT and is temporary. */ | |
712 | "-gnat", | |
b99933c7 RS |
713 | 0 |
714 | }; | |
4291d9c8 RS |
715 | \f |
716 | /* Options controlling warnings */ | |
717 | ||
718 | /* Don't print warning messages. -w. */ | |
719 | ||
720 | int inhibit_warnings = 0; | |
721 | ||
722 | /* Print various extra warnings. -W. */ | |
723 | ||
724 | int extra_warnings = 0; | |
725 | ||
726 | /* Treat warnings as errors. -Werror. */ | |
727 | ||
728 | int warnings_are_errors = 0; | |
729 | ||
730 | /* Nonzero to warn about unused local variables. */ | |
731 | ||
732 | int warn_unused; | |
733 | ||
734 | /* Nonzero to warn about variables used before they are initialized. */ | |
735 | ||
736 | int warn_uninitialized; | |
737 | ||
738 | /* Nonzero means warn about all declarations which shadow others. */ | |
739 | ||
740 | int warn_shadow; | |
741 | ||
742 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
743 | ||
744 | int warn_switch; | |
745 | ||
746 | /* Nonzero means warn about function definitions that default the return type | |
747 | or that use a null return and have a return-type other than void. */ | |
748 | ||
749 | int warn_return_type; | |
750 | ||
751 | /* Nonzero means warn about pointer casts that increase the required | |
752 | alignment of the target type (and might therefore lead to a crash | |
753 | due to a misaligned access). */ | |
754 | ||
755 | int warn_cast_align; | |
756 | ||
757 | /* Nonzero means warn about any identifiers that match in the first N | |
758 | characters. The value N is in `id_clash_len'. */ | |
759 | ||
760 | int warn_id_clash; | |
b51e9c62 RK |
761 | unsigned id_clash_len; |
762 | ||
763 | /* Nonzero means warn about any objects definitions whose size is larger | |
764 | than N bytes. Also want about function definitions whose returned | |
765 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
766 | ||
767 | int warn_larger_than; | |
768 | unsigned larger_than_size; | |
4291d9c8 RS |
769 | |
770 | /* Nonzero means warn if inline function is too large. */ | |
771 | ||
772 | int warn_inline; | |
773 | ||
774 | /* Warn if a function returns an aggregate, | |
775 | since there are often incompatible calling conventions for doing this. */ | |
776 | ||
777 | int warn_aggregate_return; | |
778 | ||
779 | /* Likewise for -W. */ | |
780 | ||
781 | struct { char *string; int *variable; int on_value;} W_options[] = | |
782 | { | |
783 | {"unused", &warn_unused, 1}, | |
784 | {"error", &warnings_are_errors, 1}, | |
785 | {"shadow", &warn_shadow, 1}, | |
786 | {"switch", &warn_switch, 1}, | |
4291d9c8 RS |
787 | {"aggregate-return", &warn_aggregate_return, 1}, |
788 | {"cast-align", &warn_cast_align, 1}, | |
f246a305 RS |
789 | {"uninitialized", &warn_uninitialized, 1}, |
790 | {"inline", &warn_inline, 1} | |
4291d9c8 RS |
791 | }; |
792 | \f | |
793 | /* Output files for assembler code (real compiler output) | |
794 | and debugging dumps. */ | |
795 | ||
796 | FILE *asm_out_file; | |
797 | FILE *aux_info_file; | |
798 | FILE *rtl_dump_file; | |
799 | FILE *jump_opt_dump_file; | |
800 | FILE *cse_dump_file; | |
801 | FILE *loop_dump_file; | |
802 | FILE *cse2_dump_file; | |
803 | FILE *flow_dump_file; | |
804 | FILE *combine_dump_file; | |
805 | FILE *sched_dump_file; | |
806 | FILE *local_reg_dump_file; | |
807 | FILE *global_reg_dump_file; | |
808 | FILE *sched2_dump_file; | |
809 | FILE *jump2_opt_dump_file; | |
810 | FILE *dbr_sched_dump_file; | |
811 | FILE *stack_reg_dump_file; | |
812 | ||
813 | /* Time accumulators, to count the total time spent in various passes. */ | |
814 | ||
815 | int parse_time; | |
816 | int varconst_time; | |
817 | int integration_time; | |
818 | int jump_time; | |
819 | int cse_time; | |
820 | int loop_time; | |
821 | int cse2_time; | |
822 | int flow_time; | |
823 | int combine_time; | |
824 | int sched_time; | |
825 | int local_alloc_time; | |
826 | int global_alloc_time; | |
827 | int sched2_time; | |
828 | int dbr_sched_time; | |
829 | int shorten_branch_time; | |
830 | int stack_reg_time; | |
831 | int final_time; | |
832 | int symout_time; | |
833 | int dump_time; | |
834 | \f | |
835 | /* Return time used so far, in microseconds. */ | |
836 | ||
837 | int | |
838 | get_run_time () | |
839 | { | |
840 | #ifdef USG | |
841 | struct tms tms; | |
842 | #else | |
843 | #ifndef VMS | |
844 | struct rusage rusage; | |
845 | #else /* VMS */ | |
846 | struct | |
847 | { | |
848 | int proc_user_time; | |
849 | int proc_system_time; | |
850 | int child_user_time; | |
851 | int child_system_time; | |
852 | } vms_times; | |
853 | #endif | |
854 | #endif | |
855 | ||
856 | if (quiet_flag) | |
857 | return 0; | |
858 | ||
859 | #ifdef USG | |
860 | times (&tms); | |
861 | return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ); | |
862 | #else | |
863 | #ifndef VMS | |
864 | getrusage (0, &rusage); | |
865 | return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec | |
866 | + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); | |
867 | #else /* VMS */ | |
868 | times (&vms_times); | |
869 | return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; | |
870 | #endif | |
871 | #endif | |
872 | } | |
873 | ||
874 | #define TIMEVAR(VAR, BODY) \ | |
875 | do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0) | |
876 | ||
877 | void | |
878 | print_time (str, total) | |
879 | char *str; | |
880 | int total; | |
881 | { | |
882 | fprintf (stderr, | |
883 | "time in %s: %d.%06d\n", | |
884 | str, total / 1000000, total % 1000000); | |
885 | } | |
886 | ||
887 | /* Count an error or warning. Return 1 if the message should be printed. */ | |
888 | ||
889 | int | |
890 | count_error (warningp) | |
891 | int warningp; | |
892 | { | |
893 | if (warningp && inhibit_warnings) | |
894 | return 0; | |
895 | ||
896 | if (warningp && !warnings_are_errors) | |
897 | warningcount++; | |
898 | else | |
899 | { | |
900 | static int warning_message = 0; | |
901 | ||
902 | if (warningp && !warning_message) | |
903 | { | |
904 | fprintf (stderr, "%s: warnings being treated as errors\n", progname); | |
905 | warning_message = 1; | |
906 | } | |
907 | errorcount++; | |
908 | } | |
909 | ||
910 | return 1; | |
911 | } | |
912 | ||
913 | /* Print a fatal error message. NAME is the text. | |
914 | Also include a system error message based on `errno'. */ | |
915 | ||
916 | void | |
917 | pfatal_with_name (name) | |
918 | char *name; | |
919 | { | |
920 | fprintf (stderr, "%s: ", progname); | |
921 | perror (name); | |
922 | exit (35); | |
923 | } | |
924 | ||
925 | void | |
926 | fatal_io_error (name) | |
927 | char *name; | |
928 | { | |
929 | fprintf (stderr, "%s: %s: I/O error\n", progname, name); | |
930 | exit (35); | |
931 | } | |
932 | ||
4291d9c8 RS |
933 | /* Called to give a better error message when we don't have an insn to match |
934 | what we are looking for or if the insn's constraints aren't satisfied, | |
935 | rather than just calling abort(). */ | |
936 | ||
937 | void | |
938 | fatal_insn_not_found (insn) | |
939 | rtx insn; | |
940 | { | |
ca695ac9 JB |
941 | if (!output_bytecode) |
942 | { | |
943 | if (INSN_CODE (insn) < 0) | |
eb711c86 | 944 | error ("internal error--unrecognizable insn:"); |
ca695ac9 | 945 | else |
eb711c86 | 946 | error ("internal error--insn does not satisfy its constraints:"); |
ca695ac9 JB |
947 | debug_rtx (insn); |
948 | } | |
4291d9c8 RS |
949 | if (asm_out_file) |
950 | fflush (asm_out_file); | |
951 | if (aux_info_file) | |
952 | fflush (aux_info_file); | |
953 | if (rtl_dump_file) | |
954 | fflush (rtl_dump_file); | |
955 | if (jump_opt_dump_file) | |
956 | fflush (jump_opt_dump_file); | |
957 | if (cse_dump_file) | |
958 | fflush (cse_dump_file); | |
959 | if (loop_dump_file) | |
960 | fflush (loop_dump_file); | |
961 | if (cse2_dump_file) | |
962 | fflush (cse2_dump_file); | |
963 | if (flow_dump_file) | |
964 | fflush (flow_dump_file); | |
965 | if (combine_dump_file) | |
966 | fflush (combine_dump_file); | |
967 | if (sched_dump_file) | |
968 | fflush (sched_dump_file); | |
969 | if (local_reg_dump_file) | |
970 | fflush (local_reg_dump_file); | |
971 | if (global_reg_dump_file) | |
972 | fflush (global_reg_dump_file); | |
973 | if (sched2_dump_file) | |
974 | fflush (sched2_dump_file); | |
975 | if (jump2_opt_dump_file) | |
976 | fflush (jump2_opt_dump_file); | |
977 | if (dbr_sched_dump_file) | |
978 | fflush (dbr_sched_dump_file); | |
979 | if (stack_reg_dump_file) | |
980 | fflush (stack_reg_dump_file); | |
981 | abort (); | |
982 | } | |
983 | ||
984 | /* This is the default decl_printable_name function. */ | |
985 | ||
986 | static char * | |
987 | decl_name (decl, kind) | |
988 | tree decl; | |
989 | char **kind; | |
990 | { | |
991 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
992 | } | |
993 | \f | |
994 | static int need_error_newline; | |
995 | ||
996 | /* Function of last error message; | |
997 | more generally, function such that if next error message is in it | |
998 | then we don't have to mention the function name. */ | |
999 | static tree last_error_function = NULL; | |
1000 | ||
1001 | /* Used to detect when input_file_stack has changed since last described. */ | |
1002 | static int last_error_tick; | |
1003 | ||
1004 | /* Called when the start of a function definition is parsed, | |
1005 | this function prints on stderr the name of the function. */ | |
1006 | ||
1007 | void | |
1008 | announce_function (decl) | |
1009 | tree decl; | |
1010 | { | |
1011 | if (! quiet_flag) | |
1012 | { | |
1013 | char *junk; | |
1014 | if (rtl_dump_and_exit) | |
1015 | fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); | |
1016 | else | |
1017 | fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk)); | |
1018 | fflush (stderr); | |
1019 | need_error_newline = 1; | |
1020 | last_error_function = current_function_decl; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | /* Prints out, if necessary, the name of the current function | |
1025 | which caused an error. Called from all error and warning functions. */ | |
1026 | ||
1027 | void | |
1028 | report_error_function (file) | |
1029 | char *file; | |
1030 | { | |
1031 | struct file_stack *p; | |
1032 | ||
1033 | if (need_error_newline) | |
1034 | { | |
1035 | fprintf (stderr, "\n"); | |
1036 | need_error_newline = 0; | |
1037 | } | |
1038 | ||
1039 | if (last_error_function != current_function_decl) | |
1040 | { | |
1041 | char *kind = "function"; | |
1042 | if (current_function_decl != 0 | |
1043 | && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE) | |
1044 | kind = "method"; | |
1045 | ||
1046 | if (file) | |
1047 | fprintf (stderr, "%s: ", file); | |
1048 | ||
1049 | if (current_function_decl == NULL) | |
1050 | fprintf (stderr, "At top level:\n"); | |
1051 | else | |
1052 | { | |
1053 | char *name = (*decl_printable_name) (current_function_decl, &kind); | |
1054 | fprintf (stderr, "In %s `%s':\n", kind, name); | |
1055 | } | |
1056 | ||
1057 | last_error_function = current_function_decl; | |
1058 | } | |
1059 | if (input_file_stack && input_file_stack->next != 0 | |
1060 | && input_file_stack_tick != last_error_tick) | |
1061 | { | |
1062 | fprintf (stderr, "In file included"); | |
1063 | for (p = input_file_stack->next; p; p = p->next) | |
1064 | { | |
1065 | fprintf (stderr, " from %s:%d", p->name, p->line); | |
1066 | if (p->next) | |
e5301904 | 1067 | fprintf (stderr, ",\n "); |
4291d9c8 RS |
1068 | } |
1069 | fprintf (stderr, ":\n"); | |
1070 | last_error_tick = input_file_stack_tick; | |
1071 | } | |
1072 | } | |
eb711c86 RK |
1073 | \f |
1074 | /* Print a message. */ | |
4291d9c8 | 1075 | |
eb711c86 RK |
1076 | static void |
1077 | vmessage (prefix, s, ap) | |
1078 | char *prefix; | |
4291d9c8 | 1079 | char *s; |
eb711c86 | 1080 | va_list ap; |
4291d9c8 | 1081 | { |
eb711c86 RK |
1082 | if (prefix) |
1083 | fprintf (stderr, "%s: ", prefix); | |
1084 | ||
1085 | #ifdef HAVE_VPRINTF | |
1086 | vfprintf (stderr, s, ap); | |
1087 | #else | |
1088 | { | |
1089 | HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT); | |
1090 | HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT); | |
1091 | HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT); | |
1092 | fprintf (stderr, s, v1, v2, v3); | |
1093 | } | |
1094 | #endif | |
4291d9c8 RS |
1095 | } |
1096 | ||
eb711c86 | 1097 | /* Print a message relevant to line LINE of file FILE. */ |
4291d9c8 | 1098 | |
eb711c86 RK |
1099 | static void |
1100 | v_message_with_file_and_line (file, line, prefix, s, ap) | |
4291d9c8 RS |
1101 | char *file; |
1102 | int line; | |
eb711c86 | 1103 | char *prefix; |
4291d9c8 | 1104 | char *s; |
eb711c86 | 1105 | va_list ap; |
4291d9c8 | 1106 | { |
4291d9c8 RS |
1107 | if (file) |
1108 | fprintf (stderr, "%s:%d: ", file, line); | |
1109 | else | |
1110 | fprintf (stderr, "%s: ", progname); | |
d78c6ad5 | 1111 | |
eb711c86 RK |
1112 | vmessage (prefix, s, ap); |
1113 | fputc ('\n', stderr); | |
4291d9c8 RS |
1114 | } |
1115 | ||
eb711c86 | 1116 | /* Print a message relevant to the given DECL. */ |
4291d9c8 | 1117 | |
eb711c86 RK |
1118 | static void |
1119 | v_message_with_decl (decl, prefix, s, ap) | |
4291d9c8 | 1120 | tree decl; |
eb711c86 | 1121 | char *prefix; |
4291d9c8 | 1122 | char *s; |
eb711c86 | 1123 | va_list ap; |
4291d9c8 | 1124 | { |
eb711c86 | 1125 | char *n, *p, *junk; |
4291d9c8 RS |
1126 | |
1127 | fprintf (stderr, "%s:%d: ", | |
1128 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); | |
1129 | ||
eb711c86 RK |
1130 | if (prefix) |
1131 | fprintf (stderr, "%s: ", prefix); | |
1132 | ||
1133 | /* Do magic to get around lack of varargs support for insertion | |
1134 | of arguments into existing list. We know that the decl is first; | |
1135 | we ass_u_me that it will be printed with "%s". */ | |
1136 | ||
1137 | for (p = s; *p; ++p) | |
1138 | { | |
1139 | if (*p == '%') | |
1140 | { | |
1141 | if (*(p + 1) == '%') | |
1142 | ++p; | |
1143 | else | |
1144 | break; | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | if (p > s) | |
1149 | fwrite (s, p - s, 1, stderr); | |
1150 | ||
1151 | if (*p == '%') | |
1152 | { | |
1153 | char *n = (DECL_NAME (decl) | |
1154 | ? (*decl_printable_name) (decl, &junk) | |
1155 | : "((anonymous))"); | |
1156 | fputs (n, stderr); | |
1157 | while (*p) | |
1158 | { | |
1159 | ++p; | |
1160 | if (isalpha (*(p - 1) & 0xFF)) | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | if (*p) | |
1166 | vmessage ((char *)NULL, p, ap); | |
1167 | ||
1168 | fputc ('\n', stderr); | |
4291d9c8 RS |
1169 | } |
1170 | ||
eb711c86 | 1171 | /* Figure file and line of the given INSN. */ |
4291d9c8 | 1172 | |
eb711c86 RK |
1173 | static void |
1174 | file_and_line_for_asm (insn, pfile, pline) | |
4291d9c8 | 1175 | rtx insn; |
eb711c86 RK |
1176 | char **pfile; |
1177 | int *pline; | |
4291d9c8 | 1178 | { |
4291d9c8 RS |
1179 | rtx body = PATTERN (insn); |
1180 | rtx asmop; | |
1181 | ||
1182 | /* Find the (or one of the) ASM_OPERANDS in the insn. */ | |
1183 | if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS) | |
1184 | asmop = SET_SRC (body); | |
1185 | else if (GET_CODE (body) == ASM_OPERANDS) | |
1186 | asmop = body; | |
1187 | else if (GET_CODE (body) == PARALLEL | |
1188 | && GET_CODE (XVECEXP (body, 0, 0)) == SET) | |
1189 | asmop = SET_SRC (XVECEXP (body, 0, 0)); | |
1190 | else if (GET_CODE (body) == PARALLEL | |
1191 | && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS) | |
1192 | asmop = XVECEXP (body, 0, 0); | |
eb711c86 RK |
1193 | else |
1194 | asmop = NULL; | |
1195 | ||
1196 | if (asmop) | |
1197 | { | |
1198 | *pfile = ASM_OPERANDS_SOURCE_FILE (asmop); | |
1199 | *pline = ASM_OPERANDS_SOURCE_LINE (asmop); | |
1200 | } | |
1201 | else | |
1202 | { | |
1203 | *pfile = input_filename; | |
1204 | *pline = lineno; | |
1205 | } | |
1206 | } | |
4291d9c8 | 1207 | |
eb711c86 | 1208 | /* Report an error at line LINE of file FILE. */ |
4291d9c8 | 1209 | |
eb711c86 RK |
1210 | static void |
1211 | v_error_with_file_and_line (file, line, s, ap) | |
1212 | char *file; | |
1213 | int line; | |
1214 | char *s; | |
1215 | va_list ap; | |
1216 | { | |
1217 | count_error (0); | |
1218 | report_error_function (file); | |
1219 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); | |
d78c6ad5 RK |
1220 | } |
1221 | ||
1222 | void | |
e0e2a8da | 1223 | error_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
d78c6ad5 | 1224 | { |
e0e2a8da | 1225 | #ifndef __STDC__ |
eb711c86 RK |
1226 | char *file; |
1227 | int line; | |
1228 | char *s; | |
e0e2a8da RK |
1229 | #endif |
1230 | va_list ap; | |
1231 | ||
1232 | VA_START (ap, s); | |
eb711c86 | 1233 | |
e0e2a8da | 1234 | #ifndef __STDC__ |
eb711c86 RK |
1235 | file = va_arg (ap, char *); |
1236 | line = va_arg (ap, int); | |
1237 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1238 | #endif |
1239 | ||
eb711c86 RK |
1240 | v_error_with_file_and_line (file, line, s, ap); |
1241 | va_end (ap); | |
4291d9c8 RS |
1242 | } |
1243 | ||
eb711c86 RK |
1244 | /* Report an error at the declaration DECL. |
1245 | S is a format string which uses %s to substitute the declaration | |
1246 | name; subsequent substitutions are a la printf. */ | |
1247 | ||
1248 | static void | |
1249 | v_error_with_decl (decl, s, ap) | |
1250 | tree decl; | |
1251 | char *s; | |
1252 | va_list ap; | |
1253 | { | |
1254 | count_error (0); | |
1255 | report_error_function (DECL_SOURCE_FILE (decl)); | |
1256 | v_message_with_decl (decl, (char *)NULL, s, ap); | |
1257 | } | |
4291d9c8 RS |
1258 | |
1259 | void | |
e0e2a8da | 1260 | error_with_decl VPROTO((tree decl, char *s, ...)) |
eb711c86 | 1261 | { |
e0e2a8da | 1262 | #ifndef __STDC__ |
eb711c86 RK |
1263 | tree decl; |
1264 | char *s; | |
e0e2a8da RK |
1265 | #endif |
1266 | va_list ap; | |
eb711c86 | 1267 | |
e0e2a8da RK |
1268 | VA_START (ap, s); |
1269 | ||
1270 | #ifndef __STDC__ | |
eb711c86 RK |
1271 | decl = va_arg (ap, tree); |
1272 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1273 | #endif |
1274 | ||
eb711c86 RK |
1275 | v_error_with_decl (decl, s, ap); |
1276 | va_end (ap); | |
1277 | } | |
1278 | ||
1279 | /* Report an error at the line number of the insn INSN. | |
1280 | This is used only when INSN is an `asm' with operands, | |
1281 | and each ASM_OPERANDS records its own source file and line. */ | |
1282 | ||
1283 | static void | |
1284 | v_error_for_asm (insn, s, ap) | |
1285 | rtx insn; | |
4291d9c8 | 1286 | char *s; |
eb711c86 | 1287 | va_list ap; |
4291d9c8 | 1288 | { |
eb711c86 RK |
1289 | char *file; |
1290 | int line; | |
4291d9c8 | 1291 | |
eb711c86 RK |
1292 | count_error (0); |
1293 | file_and_line_for_asm (insn, &file, &line); | |
4291d9c8 | 1294 | report_error_function (file); |
eb711c86 RK |
1295 | v_message_with_file_and_line (file, line, (char *)NULL, s, ap); |
1296 | } | |
4291d9c8 | 1297 | |
eb711c86 | 1298 | void |
e0e2a8da | 1299 | error_for_asm VPROTO((rtx insn, char *s, ...)) |
eb711c86 | 1300 | { |
e0e2a8da | 1301 | #ifndef __STDC__ |
eb711c86 RK |
1302 | rtx insn; |
1303 | char *s; | |
e0e2a8da RK |
1304 | #endif |
1305 | va_list ap; | |
eb711c86 | 1306 | |
e0e2a8da RK |
1307 | VA_START (ap, s); |
1308 | ||
1309 | #ifndef __STDC__ | |
eb711c86 RK |
1310 | insn = va_arg (ap, rtx); |
1311 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1312 | #endif |
1313 | ||
eb711c86 RK |
1314 | v_error_for_asm (insn, s, ap); |
1315 | va_end (ap); | |
4291d9c8 RS |
1316 | } |
1317 | ||
eb711c86 | 1318 | /* Report an error at the current line number. */ |
4291d9c8 | 1319 | |
eb711c86 RK |
1320 | static void |
1321 | verror (s, ap) | |
4291d9c8 | 1322 | char *s; |
eb711c86 | 1323 | va_list ap; |
4291d9c8 | 1324 | { |
eb711c86 | 1325 | v_error_with_file_and_line (input_filename, lineno, s, ap); |
4291d9c8 RS |
1326 | } |
1327 | ||
eb711c86 | 1328 | void |
e0e2a8da | 1329 | error VPROTO((char *s, ...)) |
eb711c86 | 1330 | { |
e0e2a8da | 1331 | #ifndef __STDC__ |
eb711c86 | 1332 | char *s; |
e0e2a8da RK |
1333 | #endif |
1334 | va_list ap; | |
1335 | ||
1336 | VA_START (ap, s); | |
eb711c86 | 1337 | |
e0e2a8da | 1338 | #ifndef __STDC__ |
eb711c86 | 1339 | s = va_arg (ap, char *); |
e0e2a8da RK |
1340 | #endif |
1341 | ||
eb711c86 RK |
1342 | verror (s, ap); |
1343 | va_end (ap); | |
1344 | } | |
1345 | ||
1346 | /* Report a fatal error at the current line number. */ | |
1347 | ||
1348 | static void | |
1349 | vfatal (s, ap) | |
1350 | char *s; | |
1351 | va_list ap; | |
1352 | { | |
1353 | verror (s, ap); | |
1354 | exit (34); | |
1355 | } | |
4291d9c8 RS |
1356 | |
1357 | void | |
e0e2a8da | 1358 | fatal VPROTO((char *s, ...)) |
eb711c86 | 1359 | { |
e0e2a8da | 1360 | #ifndef __STDC__ |
eb711c86 | 1361 | char *s; |
e0e2a8da RK |
1362 | #endif |
1363 | va_list ap; | |
1364 | ||
1365 | VA_START (ap, s); | |
eb711c86 | 1366 | |
e0e2a8da | 1367 | #ifndef __STDC__ |
eb711c86 | 1368 | s = va_arg (ap, char *); |
e0e2a8da RK |
1369 | #endif |
1370 | ||
eb711c86 RK |
1371 | vfatal (s, ap); |
1372 | va_end (ap); | |
1373 | } | |
1374 | ||
1375 | /* Report a warning at line LINE of file FILE. */ | |
1376 | ||
1377 | static void | |
1378 | v_warning_with_file_and_line (file, line, s, ap) | |
1379 | char *file; | |
1380 | int line; | |
4291d9c8 | 1381 | char *s; |
eb711c86 | 1382 | va_list ap; |
4291d9c8 | 1383 | { |
eb711c86 RK |
1384 | if (count_error (1)) |
1385 | { | |
1386 | report_error_function (file); | |
1387 | v_message_with_file_and_line (file, line, "warning", s, ap); | |
1388 | } | |
1389 | } | |
4291d9c8 | 1390 | |
eb711c86 | 1391 | void |
e0e2a8da | 1392 | warning_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
eb711c86 | 1393 | { |
e0e2a8da | 1394 | #ifndef __STDC__ |
eb711c86 RK |
1395 | char *file; |
1396 | int line; | |
1397 | char *s; | |
e0e2a8da RK |
1398 | #endif |
1399 | va_list ap; | |
1400 | ||
1401 | VA_START (ap, s); | |
eb711c86 | 1402 | |
e0e2a8da | 1403 | #ifndef __STDC__ |
eb711c86 RK |
1404 | file = va_arg (ap, char *); |
1405 | line = va_arg (ap, int); | |
1406 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1407 | #endif |
1408 | ||
eb711c86 RK |
1409 | v_warning_with_file_and_line (file, line, s, ap); |
1410 | va_end (ap); | |
1411 | } | |
4291d9c8 | 1412 | |
eb711c86 RK |
1413 | /* Report a warning at the declaration DECL. |
1414 | S is a format string which uses %s to substitute the declaration | |
1415 | name; subsequent substitutions are a la printf. */ | |
4291d9c8 | 1416 | |
eb711c86 RK |
1417 | static void |
1418 | v_warning_with_decl (decl, s, ap) | |
1419 | tree decl; | |
1420 | char *s; | |
1421 | va_list ap; | |
1422 | { | |
1423 | if (count_error (1)) | |
1424 | { | |
1425 | report_error_function (DECL_SOURCE_FILE (decl)); | |
1426 | v_message_with_decl (decl, "warning", s, ap); | |
1427 | } | |
1428 | } | |
4291d9c8 | 1429 | |
eb711c86 | 1430 | void |
e0e2a8da | 1431 | warning_with_decl VPROTO((tree decl, char *s, ...)) |
eb711c86 | 1432 | { |
e0e2a8da | 1433 | #ifndef __STDC__ |
eb711c86 RK |
1434 | tree decl; |
1435 | char *s; | |
e0e2a8da RK |
1436 | #endif |
1437 | va_list ap; | |
eb711c86 | 1438 | |
e0e2a8da RK |
1439 | VA_START (ap, s); |
1440 | ||
1441 | #ifndef __STDC__ | |
eb711c86 RK |
1442 | decl = va_arg (ap, tree); |
1443 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1444 | #endif |
1445 | ||
eb711c86 RK |
1446 | v_warning_with_decl (decl, s, ap); |
1447 | va_end (ap); | |
4291d9c8 RS |
1448 | } |
1449 | ||
1450 | /* Report a warning at the line number of the insn INSN. | |
4291d9c8 RS |
1451 | This is used only when INSN is an `asm' with operands, |
1452 | and each ASM_OPERANDS records its own source file and line. */ | |
1453 | ||
eb711c86 RK |
1454 | static void |
1455 | v_warning_for_asm (insn, s, ap) | |
4291d9c8 RS |
1456 | rtx insn; |
1457 | char *s; | |
eb711c86 | 1458 | va_list ap; |
4291d9c8 | 1459 | { |
eb711c86 RK |
1460 | if (count_error (1)) |
1461 | { | |
1462 | char *file; | |
1463 | int line; | |
4291d9c8 | 1464 | |
eb711c86 RK |
1465 | file_and_line_for_asm (insn, &file, &line); |
1466 | report_error_function (file); | |
1467 | v_message_with_file_and_line (file, line, "warning", s, ap); | |
1468 | } | |
1469 | } | |
4291d9c8 | 1470 | |
eb711c86 | 1471 | void |
e0e2a8da | 1472 | warning_for_asm VPROTO((rtx insn, char *s, ...)) |
eb711c86 | 1473 | { |
e0e2a8da | 1474 | #ifndef __STDC__ |
eb711c86 RK |
1475 | rtx insn; |
1476 | char *s; | |
e0e2a8da RK |
1477 | #endif |
1478 | va_list ap; | |
1479 | ||
1480 | VA_START (ap, s); | |
eb711c86 | 1481 | |
e0e2a8da | 1482 | #ifndef __STDC__ |
eb711c86 RK |
1483 | insn = va_arg (ap, rtx); |
1484 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1485 | #endif |
1486 | ||
eb711c86 RK |
1487 | v_warning_for_asm (insn, s, ap); |
1488 | va_end (ap); | |
1489 | } | |
4291d9c8 | 1490 | |
eb711c86 RK |
1491 | /* Report a warning at the current line number. */ |
1492 | ||
1493 | static void | |
1494 | vwarning (s, ap) | |
1495 | char *s; | |
1496 | va_list ap; | |
1497 | { | |
1498 | v_warning_with_file_and_line (input_filename, lineno, s, ap); | |
4291d9c8 | 1499 | } |
eb711c86 RK |
1500 | |
1501 | void | |
e0e2a8da | 1502 | warning VPROTO((char *s, ...)) |
eb711c86 | 1503 | { |
e0e2a8da | 1504 | #ifndef __STDC__ |
eb711c86 | 1505 | char *s; |
e0e2a8da RK |
1506 | #endif |
1507 | va_list ap; | |
1508 | ||
1509 | VA_START (ap, s); | |
eb711c86 | 1510 | |
e0e2a8da | 1511 | #ifndef __STDC__ |
eb711c86 | 1512 | s = va_arg (ap, char *); |
e0e2a8da RK |
1513 | #endif |
1514 | ||
eb711c86 RK |
1515 | vwarning (s, ap); |
1516 | va_end (ap); | |
1517 | } | |
1518 | ||
4291d9c8 RS |
1519 | /* These functions issue either warnings or errors depending on |
1520 | -pedantic-errors. */ | |
1521 | ||
eb711c86 RK |
1522 | static void |
1523 | vpedwarn (s, ap) | |
4291d9c8 | 1524 | char *s; |
eb711c86 | 1525 | va_list ap; |
4291d9c8 RS |
1526 | { |
1527 | if (flag_pedantic_errors) | |
eb711c86 | 1528 | verror (s, ap); |
4291d9c8 | 1529 | else |
eb711c86 | 1530 | vwarning (s, ap); |
4291d9c8 RS |
1531 | } |
1532 | ||
1533 | void | |
e0e2a8da | 1534 | pedwarn VPROTO((char *s, ...)) |
eb711c86 | 1535 | { |
e0e2a8da | 1536 | #ifndef __STDC__ |
eb711c86 | 1537 | char *s; |
e0e2a8da RK |
1538 | #endif |
1539 | va_list ap; | |
1540 | ||
1541 | VA_START (ap, s); | |
eb711c86 | 1542 | |
e0e2a8da | 1543 | #ifndef __STDC__ |
eb711c86 | 1544 | s = va_arg (ap, char *); |
e0e2a8da RK |
1545 | #endif |
1546 | ||
eb711c86 RK |
1547 | vpedwarn (s, ap); |
1548 | va_end (ap); | |
1549 | } | |
1550 | ||
1551 | static void | |
1552 | v_pedwarn_with_decl (decl, s, ap) | |
4291d9c8 RS |
1553 | tree decl; |
1554 | char *s; | |
eb711c86 | 1555 | va_list ap; |
4291d9c8 | 1556 | { |
1554cdf5 DE |
1557 | /* We don't want -pedantic-errors to cause the compilation to fail from |
1558 | "errors" in system header files. Sometimes fixincludes can't fix what's | |
1559 | broken (eg: unsigned char bitfields - fixing it may change the alignment | |
1560 | which will cause programs to mysteriously fail because the C library | |
1561 | or kernel uses the original layout). | |
1562 | ||
1563 | ??? In fact, we may wish not to issue any message in this case. */ | |
1564 | ||
1565 | if (flag_pedantic_errors && ! DECL_IN_SYSTEM_HEADER (decl)) | |
eb711c86 | 1566 | v_error_with_decl (decl, s, ap); |
4291d9c8 | 1567 | else |
eb711c86 | 1568 | v_warning_with_decl (decl, s, ap); |
4291d9c8 RS |
1569 | } |
1570 | ||
1571 | void | |
e0e2a8da | 1572 | pedwarn_with_decl VPROTO((tree decl, char *s, ...)) |
eb711c86 | 1573 | { |
e0e2a8da | 1574 | #ifndef __STDC__ |
eb711c86 RK |
1575 | tree decl; |
1576 | char *s; | |
e0e2a8da RK |
1577 | #endif |
1578 | va_list ap; | |
eb711c86 | 1579 | |
e0e2a8da RK |
1580 | VA_START (ap, s); |
1581 | ||
1582 | #ifndef __STDC__ | |
eb711c86 RK |
1583 | decl = va_arg (ap, tree); |
1584 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1585 | #endif |
1586 | ||
eb711c86 RK |
1587 | v_pedwarn_with_decl (decl, s, ap); |
1588 | va_end (ap); | |
1589 | } | |
1590 | ||
1591 | static void | |
1592 | v_pedwarn_with_file_and_line (file, line, s, ap) | |
4291d9c8 RS |
1593 | char *file; |
1594 | int line; | |
1595 | char *s; | |
eb711c86 | 1596 | va_list ap; |
4291d9c8 RS |
1597 | { |
1598 | if (flag_pedantic_errors) | |
eb711c86 | 1599 | v_error_with_file_and_line (file, line, s, ap); |
4291d9c8 | 1600 | else |
eb711c86 | 1601 | v_warning_with_file_and_line (file, line, s, ap); |
4291d9c8 RS |
1602 | } |
1603 | ||
4291d9c8 | 1604 | void |
e0e2a8da | 1605 | pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...)) |
eb711c86 | 1606 | { |
e0e2a8da | 1607 | #ifndef __STDC__ |
eb711c86 RK |
1608 | char *file; |
1609 | int line; | |
1610 | char *s; | |
e0e2a8da RK |
1611 | #endif |
1612 | va_list ap; | |
eb711c86 | 1613 | |
e0e2a8da RK |
1614 | VA_START (ap, s); |
1615 | ||
1616 | #ifndef __STDC__ | |
eb711c86 RK |
1617 | file = va_arg (ap, char *); |
1618 | line = va_arg (ap, int); | |
1619 | s = va_arg (ap, char *); | |
e0e2a8da RK |
1620 | #endif |
1621 | ||
eb711c86 RK |
1622 | v_pedwarn_with_file_and_line (file, line, s, ap); |
1623 | va_end (ap); | |
1624 | } | |
1625 | ||
1626 | /* Apologize for not implementing some feature. */ | |
1627 | ||
1628 | static void | |
1629 | vsorry (s, ap) | |
4291d9c8 | 1630 | char *s; |
eb711c86 | 1631 | va_list ap; |
4291d9c8 RS |
1632 | { |
1633 | sorrycount++; | |
1634 | if (input_filename) | |
1635 | fprintf (stderr, "%s:%d: ", input_filename, lineno); | |
1636 | else | |
1637 | fprintf (stderr, "%s: ", progname); | |
eb711c86 RK |
1638 | vmessage ("sorry, not implemented", s, ap); |
1639 | fputc ('\n', stderr); | |
1640 | } | |
4291d9c8 | 1641 | |
eb711c86 | 1642 | void |
e0e2a8da | 1643 | sorry VPROTO((char *s, ...)) |
eb711c86 | 1644 | { |
e0e2a8da | 1645 | #ifndef __STDC__ |
eb711c86 | 1646 | char *s; |
e0e2a8da RK |
1647 | #endif |
1648 | va_list ap; | |
1649 | ||
1650 | VA_START (ap, s); | |
eb711c86 | 1651 | |
e0e2a8da | 1652 | #ifndef __STDC__ |
eb711c86 | 1653 | s = va_arg (ap, char *); |
e0e2a8da RK |
1654 | #endif |
1655 | ||
eb711c86 RK |
1656 | vsorry (s, ap); |
1657 | va_end (ap); | |
4291d9c8 RS |
1658 | } |
1659 | ||
eb711c86 | 1660 | /* Apologize for not implementing some feature, then quit. */ |
4291d9c8 | 1661 | |
eb711c86 RK |
1662 | static void |
1663 | v_really_sorry (s, ap) | |
4291d9c8 | 1664 | char *s; |
eb711c86 | 1665 | va_list ap; |
4291d9c8 | 1666 | { |
eb711c86 | 1667 | sorrycount++; |
4291d9c8 RS |
1668 | if (input_filename) |
1669 | fprintf (stderr, "%s:%d: ", input_filename, lineno); | |
1670 | else | |
c10afc44 | 1671 | fprintf (stderr, "%s: ", progname); |
eb711c86 | 1672 | vmessage ("sorry, not implemented", s, ap); |
4291d9c8 RS |
1673 | fatal (" (fatal)\n"); |
1674 | } | |
eb711c86 RK |
1675 | |
1676 | void | |
e0e2a8da | 1677 | really_sorry VPROTO((char *s, ...)) |
eb711c86 | 1678 | { |
e0e2a8da | 1679 | #ifndef __STDC__ |
eb711c86 | 1680 | char *s; |
e0e2a8da RK |
1681 | #endif |
1682 | va_list ap; | |
1683 | ||
1684 | VA_START (ap, s); | |
eb711c86 | 1685 | |
e0e2a8da | 1686 | #ifndef __STDC__ |
eb711c86 | 1687 | s = va_arg (ap, char *); |
e0e2a8da RK |
1688 | #endif |
1689 | ||
eb711c86 RK |
1690 | v_really_sorry (s, ap); |
1691 | va_end (ap); | |
1692 | } | |
4291d9c8 RS |
1693 | \f |
1694 | /* More 'friendly' abort that prints the line and file. | |
1695 | config.h can #define abort fancy_abort if you like that sort of thing. | |
1696 | ||
1697 | I don't think this is actually a good idea. | |
1698 | Other sorts of crashes will look a certain way. | |
1699 | It is a good thing if crashes from calling abort look the same way. | |
1700 | -- RMS */ | |
1701 | ||
1702 | void | |
1703 | fancy_abort () | |
1704 | { | |
1705 | fatal ("internal gcc abort"); | |
1706 | } | |
1707 | ||
1708 | /* This calls abort and is used to avoid problems when abort if a macro. | |
1709 | It is used when we need to pass the address of abort. */ | |
1710 | ||
1711 | void | |
1712 | do_abort () | |
1713 | { | |
1714 | abort (); | |
1715 | } | |
1716 | ||
1717 | /* When `malloc.c' is compiled with `rcheck' defined, | |
1718 | it calls this function to report clobberage. */ | |
1719 | ||
1720 | void | |
1721 | botch (s) | |
1722 | { | |
1723 | abort (); | |
1724 | } | |
1725 | ||
1726 | /* Same as `malloc' but report error if no memory available. */ | |
1727 | ||
4b980e20 | 1728 | char * |
4291d9c8 RS |
1729 | xmalloc (size) |
1730 | unsigned size; | |
1731 | { | |
4b980e20 | 1732 | register char *value = (char *) malloc (size); |
4291d9c8 RS |
1733 | if (value == 0) |
1734 | fatal ("virtual memory exhausted"); | |
1735 | return value; | |
1736 | } | |
1737 | ||
1738 | /* Same as `realloc' but report error if no memory available. */ | |
1739 | ||
4b980e20 | 1740 | char * |
4291d9c8 RS |
1741 | xrealloc (ptr, size) |
1742 | char *ptr; | |
1743 | int size; | |
1744 | { | |
4b980e20 | 1745 | char *result = (char *) realloc (ptr, size); |
4291d9c8 RS |
1746 | if (!result) |
1747 | fatal ("virtual memory exhausted"); | |
1748 | return result; | |
1749 | } | |
1750 | \f | |
1751 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
1752 | if X is a power of 2. Otherwise, returns -1. |
1753 | ||
1754 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1755 | |
1756 | int | |
37366632 RK |
1757 | exact_log2_wide (x) |
1758 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1759 | { |
1760 | register int log = 0; | |
1761 | /* Test for 0 or a power of 2. */ | |
1762 | if (x == 0 || x != (x & -x)) | |
1763 | return -1; | |
1764 | while ((x >>= 1) != 0) | |
1765 | log++; | |
1766 | return log; | |
1767 | } | |
1768 | ||
1769 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1770 | If X is 0, return -1. |
1771 | ||
1772 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1773 | |
1774 | int | |
37366632 RK |
1775 | floor_log2_wide (x) |
1776 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1777 | { |
1778 | register int log = -1; | |
1779 | while (x != 0) | |
1780 | log++, | |
1781 | x >>= 1; | |
1782 | return log; | |
1783 | } | |
1784 | ||
1785 | int float_handled; | |
1786 | jmp_buf float_handler; | |
1787 | ||
1788 | /* Specify where to longjmp to when a floating arithmetic error happens. | |
1789 | If HANDLER is 0, it means don't handle the errors any more. */ | |
1790 | ||
1791 | void | |
1792 | set_float_handler (handler) | |
1793 | jmp_buf handler; | |
1794 | { | |
1795 | float_handled = (handler != 0); | |
1796 | if (handler) | |
1797 | bcopy (handler, float_handler, sizeof (float_handler)); | |
1798 | } | |
1799 | ||
bff4b641 RS |
1800 | /* Specify, in HANDLER, where to longjmp to when a floating arithmetic |
1801 | error happens, pushing the previous specification into OLD_HANDLER. | |
1802 | Return an indication of whether there was a previous handler in effect. */ | |
1803 | ||
1804 | int | |
1805 | push_float_handler (handler, old_handler) | |
dc2b15dc | 1806 | jmp_buf handler, old_handler; |
bff4b641 RS |
1807 | { |
1808 | int was_handled = float_handled; | |
1809 | ||
1810 | float_handled = 1; | |
1811 | if (was_handled) | |
1812 | bcopy (float_handler, old_handler, sizeof (float_handler)); | |
1813 | bcopy (handler, float_handler, sizeof (float_handler)); | |
1814 | return was_handled; | |
1815 | } | |
1816 | ||
1817 | /* Restore the previous specification of whether and where to longjmp to | |
1818 | when a floating arithmetic error happens. */ | |
1819 | ||
1820 | void | |
1821 | pop_float_handler (handled, handler) | |
1822 | int handled; | |
1823 | jmp_buf handler; | |
1824 | { | |
1825 | float_handled = handled; | |
1826 | if (handled) | |
1827 | bcopy (handler, float_handler, sizeof (float_handler)); | |
1828 | } | |
1829 | ||
4291d9c8 RS |
1830 | /* Signals actually come here. */ |
1831 | ||
1832 | static void | |
1833 | float_signal (signo) | |
1834 | /* If this is missing, some compilers complain. */ | |
1835 | int signo; | |
1836 | { | |
1837 | if (float_handled == 0) | |
1838 | abort (); | |
1839 | #if defined (USG) || defined (hpux) | |
1840 | signal (SIGFPE, float_signal); /* re-enable the signal catcher */ | |
1841 | #endif | |
1842 | float_handled = 0; | |
1843 | signal (SIGFPE, float_signal); | |
1844 | longjmp (float_handler, 1); | |
1845 | } | |
1846 | ||
1847 | /* Handler for SIGPIPE. */ | |
1848 | ||
1849 | static void | |
1850 | pipe_closed (signo) | |
1851 | /* If this is missing, some compilers complain. */ | |
1852 | int signo; | |
1853 | { | |
1854 | fatal ("output pipe has been closed"); | |
1855 | } | |
1856 | ||
1857 | /* Strip off a legitimate source ending from the input string NAME of | |
1858 | length LEN. */ | |
1859 | ||
1860 | void | |
1861 | strip_off_ending (name, len) | |
1862 | char *name; | |
1863 | int len; | |
1864 | { | |
1865 | if (len > 2 && ! strcmp (".c", name + len - 2)) | |
1866 | name[len - 2] = 0; | |
1867 | else if (len > 2 && ! strcmp (".m", name + len - 2)) | |
1868 | name[len - 2] = 0; | |
1869 | else if (len > 2 && ! strcmp (".i", name + len - 2)) | |
1870 | name[len - 2] = 0; | |
1871 | else if (len > 3 && ! strcmp (".ii", name + len - 3)) | |
1872 | name[len - 3] = 0; | |
1873 | else if (len > 3 && ! strcmp (".co", name + len - 3)) | |
1874 | name[len - 3] = 0; | |
1875 | else if (len > 3 && ! strcmp (".cc", name + len - 3)) | |
1876 | name[len - 3] = 0; | |
9cc00e36 RS |
1877 | else if (len > 2 && ! strcmp (".C", name + len - 2)) |
1878 | name[len - 2] = 0; | |
1879 | else if (len > 4 && ! strcmp (".cxx", name + len - 4)) | |
1880 | name[len - 4] = 0; | |
4da617d8 RK |
1881 | else if (len > 4 && ! strcmp (".cpp", name + len - 4)) |
1882 | name[len - 4] = 0; | |
4291d9c8 RS |
1883 | else if (len > 2 && ! strcmp (".f", name + len - 2)) |
1884 | name[len - 2] = 0; | |
d3984356 RK |
1885 | /* Ada will use extensions like .ada, .adb, and .ads, so just test |
1886 | for "ad". */ | |
1887 | else if (len > 4 && ! strncmp (".ad", name + len - 4, 3)) | |
4291d9c8 | 1888 | name[len - 4] = 0; |
be07ab12 RK |
1889 | else if (len > 4 && ! strcmp (".atr", name + len - 4)) |
1890 | name[len - 4] = 0; | |
4291d9c8 RS |
1891 | } |
1892 | ||
7dce5088 PE |
1893 | /* Output a quoted string. */ |
1894 | void | |
1895 | output_quoted_string (asm_file, string) | |
1896 | FILE *asm_file; | |
1897 | char *string; | |
1898 | { | |
1899 | char c; | |
1900 | ||
1901 | putc ('\"', asm_file); | |
1902 | while ((c = *string++) != 0) | |
1903 | { | |
1904 | if (c == '\"' || c == '\\') | |
1905 | putc ('\\', asm_file); | |
1906 | putc (c, asm_file); | |
1907 | } | |
1908 | putc ('\"', asm_file); | |
1909 | } | |
1910 | ||
4291d9c8 RS |
1911 | /* Output a file name in the form wanted by System V. */ |
1912 | ||
1913 | void | |
1914 | output_file_directive (asm_file, input_name) | |
1915 | FILE *asm_file; | |
1916 | char *input_name; | |
1917 | { | |
1918 | int len = strlen (input_name); | |
1919 | char *na = input_name + len; | |
1920 | ||
1921 | /* NA gets INPUT_NAME sans directory names. */ | |
1922 | while (na > input_name) | |
1923 | { | |
1924 | if (na[-1] == '/') | |
1925 | break; | |
1926 | na--; | |
1927 | } | |
1928 | ||
1929 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1930 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1931 | #else | |
1932 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1933 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1934 | #else | |
7dce5088 PE |
1935 | fprintf (asm_file, "\t.file\t"); |
1936 | output_quoted_string (asm_file, na); | |
1937 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1938 | #endif |
1939 | #endif | |
1940 | } | |
1941 | \f | |
d0d4af87 MS |
1942 | /* Routine to build language identifier for object file. */ |
1943 | static void | |
1944 | output_lang_identify (asm_out_file) | |
1945 | FILE *asm_out_file; | |
1946 | { | |
1947 | int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1; | |
1948 | char *s = (char *) alloca (len); | |
1949 | sprintf (s, "__gnu_compiled_%s", lang_identify ()); | |
1950 | ASM_OUTPUT_LABEL (asm_out_file, s); | |
1951 | } | |
1952 | ||
dfe1a916 DE |
1953 | /* Routine to open a dump file. */ |
1954 | static FILE * | |
1955 | open_dump_file (base_name, suffix) | |
1956 | char *base_name; | |
1957 | char *suffix; | |
1958 | { | |
1959 | FILE *f; | |
1960 | char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1); | |
1961 | ||
1962 | strcpy (dumpname, base_name); | |
1963 | strcat (dumpname, suffix); | |
1964 | f = fopen (dumpname, "w"); | |
1965 | if (f == 0) | |
1966 | pfatal_with_name (dumpname); | |
1967 | return f; | |
1968 | } | |
1969 | ||
4291d9c8 RS |
1970 | /* Compile an entire file of output from cpp, named NAME. |
1971 | Write a file of assembly output and various debugging dumps. */ | |
1972 | ||
1973 | static void | |
1974 | compile_file (name) | |
1975 | char *name; | |
1976 | { | |
1977 | tree globals; | |
1978 | int start_time; | |
4291d9c8 RS |
1979 | |
1980 | int name_specified = name != 0; | |
1981 | ||
1982 | if (dump_base_name == 0) | |
1983 | dump_base_name = name ? name : "gccdump"; | |
4291d9c8 RS |
1984 | |
1985 | parse_time = 0; | |
1986 | varconst_time = 0; | |
1987 | integration_time = 0; | |
1988 | jump_time = 0; | |
1989 | cse_time = 0; | |
1990 | loop_time = 0; | |
1991 | cse2_time = 0; | |
1992 | flow_time = 0; | |
1993 | combine_time = 0; | |
1994 | sched_time = 0; | |
1995 | local_alloc_time = 0; | |
1996 | global_alloc_time = 0; | |
1997 | sched2_time = 0; | |
1998 | dbr_sched_time = 0; | |
1999 | shorten_branch_time = 0; | |
2000 | stack_reg_time = 0; | |
2001 | final_time = 0; | |
2002 | symout_time = 0; | |
2003 | dump_time = 0; | |
2004 | ||
2005 | /* Open input file. */ | |
2006 | ||
2007 | if (name == 0 || !strcmp (name, "-")) | |
2008 | { | |
2009 | finput = stdin; | |
2010 | name = "stdin"; | |
2011 | } | |
2012 | else | |
2013 | finput = fopen (name, "r"); | |
2014 | if (finput == 0) | |
2015 | pfatal_with_name (name); | |
2016 | ||
282ea52a | 2017 | #ifdef IO_BUFFER_SIZE |
d7cedf4b | 2018 | setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE); |
282ea52a RS |
2019 | #endif |
2020 | ||
4291d9c8 RS |
2021 | /* Initialize data in various passes. */ |
2022 | ||
2023 | init_obstacks (); | |
2024 | init_tree_codes (); | |
2025 | init_lex (); | |
ca695ac9 JB |
2026 | /* Some of these really don't need to be called when generating bytecode, |
2027 | but the options would have to be parsed first to know that. -bson */ | |
4291d9c8 RS |
2028 | init_rtl (); |
2029 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL | |
2030 | || debug_info_level == DINFO_LEVEL_VERBOSE); | |
7f21d440 | 2031 | init_regs (); |
4291d9c8 RS |
2032 | init_decl_processing (); |
2033 | init_optabs (); | |
2034 | init_stmt (); | |
2035 | init_expmed (); | |
4fa52007 | 2036 | init_expr_once (); |
4291d9c8 RS |
2037 | init_loop (); |
2038 | init_reload (); | |
2039 | ||
2040 | if (flag_caller_saves) | |
2041 | init_caller_save (); | |
2042 | ||
f246a305 RS |
2043 | /* If auxiliary info generation is desired, open the output file. |
2044 | This goes in the same directory as the source file--unlike | |
2045 | all the other output files. */ | |
4291d9c8 RS |
2046 | if (flag_gen_aux_info) |
2047 | { | |
4291d9c8 RS |
2048 | aux_info_file = fopen (aux_info_file_name, "w"); |
2049 | if (aux_info_file == 0) | |
2050 | pfatal_with_name (aux_info_file_name); | |
2051 | } | |
2052 | ||
2053 | /* If rtl dump desired, open the output file. */ | |
2054 | if (rtl_dump) | |
dfe1a916 | 2055 | rtl_dump_file = open_dump_file (dump_base_name, ".rtl"); |
4291d9c8 RS |
2056 | |
2057 | /* If jump_opt dump desired, open the output file. */ | |
2058 | if (jump_opt_dump) | |
dfe1a916 | 2059 | jump_opt_dump_file = open_dump_file (dump_base_name, ".jump"); |
4291d9c8 RS |
2060 | |
2061 | /* If cse dump desired, open the output file. */ | |
2062 | if (cse_dump) | |
dfe1a916 | 2063 | cse_dump_file = open_dump_file (dump_base_name, ".cse"); |
4291d9c8 RS |
2064 | |
2065 | /* If loop dump desired, open the output file. */ | |
2066 | if (loop_dump) | |
dfe1a916 | 2067 | loop_dump_file = open_dump_file (dump_base_name, ".loop"); |
4291d9c8 RS |
2068 | |
2069 | /* If cse2 dump desired, open the output file. */ | |
2070 | if (cse2_dump) | |
dfe1a916 | 2071 | cse2_dump_file = open_dump_file (dump_base_name, ".cse2"); |
4291d9c8 RS |
2072 | |
2073 | /* If flow dump desired, open the output file. */ | |
2074 | if (flow_dump) | |
dfe1a916 | 2075 | flow_dump_file = open_dump_file (dump_base_name, ".flow"); |
4291d9c8 RS |
2076 | |
2077 | /* If combine dump desired, open the output file. */ | |
2078 | if (combine_dump) | |
dfe1a916 | 2079 | combine_dump_file = open_dump_file (dump_base_name, ".combine"); |
4291d9c8 RS |
2080 | |
2081 | /* If scheduling dump desired, open the output file. */ | |
2082 | if (sched_dump) | |
dfe1a916 | 2083 | sched_dump_file = open_dump_file (dump_base_name, ".sched"); |
4291d9c8 RS |
2084 | |
2085 | /* If local_reg dump desired, open the output file. */ | |
2086 | if (local_reg_dump) | |
dfe1a916 | 2087 | local_reg_dump_file = open_dump_file (dump_base_name, ".lreg"); |
4291d9c8 RS |
2088 | |
2089 | /* If global_reg dump desired, open the output file. */ | |
2090 | if (global_reg_dump) | |
dfe1a916 | 2091 | global_reg_dump_file = open_dump_file (dump_base_name, ".greg"); |
4291d9c8 RS |
2092 | |
2093 | /* If 2nd scheduling dump desired, open the output file. */ | |
2094 | if (sched2_dump) | |
dfe1a916 | 2095 | sched2_dump_file = open_dump_file (dump_base_name, ".sched2"); |
4291d9c8 RS |
2096 | |
2097 | /* If jump2_opt dump desired, open the output file. */ | |
2098 | if (jump2_opt_dump) | |
dfe1a916 | 2099 | jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2"); |
4291d9c8 RS |
2100 | |
2101 | /* If dbr_sched dump desired, open the output file. */ | |
2102 | if (dbr_sched_dump) | |
dfe1a916 | 2103 | dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr"); |
4291d9c8 RS |
2104 | |
2105 | #ifdef STACK_REGS | |
2106 | ||
2107 | /* If stack_reg dump desired, open the output file. */ | |
2108 | if (stack_reg_dump) | |
dfe1a916 | 2109 | stack_reg_dump_file = open_dump_file (dump_base_name, ".stack"); |
4291d9c8 RS |
2110 | |
2111 | #endif | |
2112 | ||
2113 | /* Open assembler code output file. */ | |
2114 | ||
2115 | if (! name_specified && asm_file_name == 0) | |
2116 | asm_out_file = stdout; | |
2117 | else | |
2118 | { | |
4291d9c8 | 2119 | int len = strlen (dump_base_name); |
dfe1a916 | 2120 | register char *dumpname = (char *) xmalloc (len + 6); |
4291d9c8 RS |
2121 | strcpy (dumpname, dump_base_name); |
2122 | strip_off_ending (dumpname, len); | |
2123 | strcat (dumpname, ".s"); | |
2124 | if (asm_file_name == 0) | |
2125 | { | |
2126 | asm_file_name = (char *) xmalloc (strlen (dumpname) + 1); | |
2127 | strcpy (asm_file_name, dumpname); | |
2128 | } | |
2129 | if (!strcmp (asm_file_name, "-")) | |
2130 | asm_out_file = stdout; | |
2131 | else | |
2132 | asm_out_file = fopen (asm_file_name, "w"); | |
2133 | if (asm_out_file == 0) | |
2134 | pfatal_with_name (asm_file_name); | |
2135 | } | |
2136 | ||
f246a305 | 2137 | #ifdef IO_BUFFER_SIZE |
d7cedf4b RS |
2138 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
2139 | _IOFBF, IO_BUFFER_SIZE); | |
f246a305 RS |
2140 | #endif |
2141 | ||
4291d9c8 RS |
2142 | input_filename = name; |
2143 | ||
2144 | /* Perform language-specific initialization. | |
2145 | This may set main_input_filename. */ | |
2146 | lang_init (); | |
2147 | ||
2148 | /* If the input doesn't start with a #line, use the input name | |
2149 | as the official input file name. */ | |
2150 | if (main_input_filename == 0) | |
2151 | main_input_filename = name; | |
2152 | ||
2153 | /* Put an entry on the input file stack for the main input file. */ | |
2154 | input_file_stack | |
2155 | = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2156 | input_file_stack->next = 0; | |
2157 | input_file_stack->name = input_filename; | |
2158 | ||
ca695ac9 JB |
2159 | if (!output_bytecode) |
2160 | { | |
2161 | ASM_FILE_START (asm_out_file); | |
2162 | } | |
4291d9c8 | 2163 | |
ca695ac9 JB |
2164 | /* Output something to inform GDB that this compilation was by GCC. Also |
2165 | serves to tell GDB file consists of bytecodes. */ | |
2166 | if (output_bytecode) | |
2167 | fprintf (asm_out_file, "bc_gcc2_compiled.:\n"); | |
2168 | else | |
2169 | { | |
4291d9c8 | 2170 | #ifndef ASM_IDENTIFY_GCC |
ca695ac9 | 2171 | fprintf (asm_out_file, "gcc2_compiled.:\n"); |
4291d9c8 | 2172 | #else |
ca695ac9 | 2173 | ASM_IDENTIFY_GCC (asm_out_file); |
4291d9c8 | 2174 | #endif |
ca695ac9 | 2175 | } |
d0d4af87 MS |
2176 | |
2177 | /* Output something to identify which front-end produced this file. */ | |
2178 | #ifdef ASM_IDENTIFY_LANGUAGE | |
2179 | ASM_IDENTIFY_LANGUAGE (asm_out_file); | |
2180 | #endif | |
2181 | ||
ca695ac9 JB |
2182 | if (output_bytecode) |
2183 | { | |
2184 | if (profile_flag || profile_block_flag) | |
2185 | error ("profiling not supported in bytecode compilation"); | |
2186 | } | |
2187 | else | |
2188 | { | |
2189 | /* ??? Note: There used to be a conditional here | |
2190 | to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined. | |
2191 | This was to guarantee separation between gcc_compiled. and | |
2192 | the first function, for the sake of dbx on Suns. | |
2193 | However, having the extra zero here confused the Emacs | |
2194 | code for unexec, and might confuse other programs too. | |
2195 | Therefore, I took out that change. | |
2196 | In future versions we should find another way to solve | |
2197 | that dbx problem. -- rms, 23 May 93. */ | |
2198 | ||
2199 | /* Don't let the first function fall at the same address | |
2200 | as gcc_compiled., if profiling. */ | |
2201 | if (profile_flag || profile_block_flag) | |
2202 | assemble_zeros (UNITS_PER_WORD); | |
2203 | } | |
4291d9c8 RS |
2204 | |
2205 | /* If dbx symbol table desired, initialize writing it | |
2206 | and output the predefined types. */ | |
f246a305 RS |
2207 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2208 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2209 | TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename, |
2210 | getdecls ())); | |
2211 | #endif | |
2212 | #ifdef SDB_DEBUGGING_INFO | |
2213 | if (write_symbols == SDB_DEBUG) | |
2214 | TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename, | |
2215 | getdecls ())); | |
2216 | #endif | |
2217 | #ifdef DWARF_DEBUGGING_INFO | |
2218 | if (write_symbols == DWARF_DEBUG) | |
2219 | TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename)); | |
2220 | #endif | |
2221 | ||
2222 | /* Initialize yet another pass. */ | |
2223 | ||
ca695ac9 JB |
2224 | if (!output_bytecode) |
2225 | init_final (main_input_filename); | |
4291d9c8 RS |
2226 | |
2227 | start_time = get_run_time (); | |
2228 | ||
2229 | /* Call the parser, which parses the entire file | |
2230 | (calling rest_of_compilation for each function). */ | |
2231 | ||
2232 | if (yyparse () != 0) | |
453dfc78 JW |
2233 | { |
2234 | if (errorcount == 0) | |
2235 | fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)"); | |
2236 | ||
2237 | /* In case there were missing closebraces, | |
2238 | get us back to the global binding level. */ | |
2239 | while (! global_bindings_p ()) | |
2240 | poplevel (0, 0, 0); | |
2241 | } | |
4291d9c8 RS |
2242 | |
2243 | /* Compilation is now finished except for writing | |
2244 | what's left of the symbol table output. */ | |
2245 | ||
2246 | parse_time += get_run_time () - start_time; | |
2247 | ||
2248 | parse_time -= integration_time; | |
2249 | parse_time -= varconst_time; | |
2250 | ||
2251 | globals = getdecls (); | |
2252 | ||
2253 | /* Really define vars that have had only a tentative definition. | |
2254 | Really output inline functions that must actually be callable | |
2255 | and have not been output so far. */ | |
2256 | ||
2257 | { | |
2258 | int len = list_length (globals); | |
2259 | tree *vec = (tree *) alloca (sizeof (tree) * len); | |
2260 | int i; | |
2261 | tree decl; | |
2262 | ||
2263 | /* Process the decls in reverse order--earliest first. | |
2264 | Put them into VEC from back to front, then take out from front. */ | |
2265 | ||
2266 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
2267 | vec[len - i - 1] = decl; | |
2268 | ||
2269 | for (i = 0; i < len; i++) | |
2270 | { | |
2271 | decl = vec[i]; | |
488b1f4f RS |
2272 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 |
2273 | && incomplete_decl_finalize_hook != 0) | |
2b599527 RS |
2274 | (*incomplete_decl_finalize_hook) (decl); |
2275 | ||
4291d9c8 RS |
2276 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) |
2277 | && ! TREE_ASM_WRITTEN (decl)) | |
2278 | { | |
6b2bd61e PB |
2279 | /* Don't write out static consts, unless we still need them. |
2280 | ||
2281 | We also keep static consts if not optimizing (for debugging). | |
2282 | ??? They might be better written into the debug information. | |
2283 | This is possible when using DWARF. | |
2284 | ||
2285 | A language processor that wants static constants to be always | |
2286 | written out (even if it is not used) is responsible for | |
2287 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
2288 | calls rest_of_decl_compilation from finish_decl. | |
2289 | One motivation for this is that is conventional in some | |
2290 | environments to write things like: | |
2291 | static const char rcsid[] = "... version string ..."; | |
2292 | intending to force the string to be in the executable. | |
2293 | ||
2294 | A language processor that would prefer to have unneeded | |
2295 | static constants "optimized away" would just defer writing | |
2296 | them out until here. E.g. C++ does this, because static | |
2297 | constants are often defined in header files. | |
2298 | ||
2299 | ??? A tempting alternative (for both C and C++) would be | |
2300 | to force a constant to be written if and only if it is | |
2301 | defined in a main file, as opposed to an include file. */ | |
2302 | ||
4291d9c8 RS |
2303 | if (! TREE_READONLY (decl) |
2304 | || TREE_PUBLIC (decl) | |
6b2bd61e | 2305 | || !optimize |
4291d9c8 RS |
2306 | || TREE_ADDRESSABLE (decl) |
2307 | || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl))) | |
37366632 | 2308 | rest_of_decl_compilation (decl, NULL_PTR, 1, 1); |
4291d9c8 RS |
2309 | else |
2310 | /* Cancel the RTL for this decl so that, if debugging info | |
2311 | output for global variables is still to come, | |
2312 | this one will be omitted. */ | |
2313 | DECL_RTL (decl) = NULL; | |
2314 | } | |
2315 | ||
2316 | if (TREE_CODE (decl) == FUNCTION_DECL | |
2317 | && ! TREE_ASM_WRITTEN (decl) | |
2318 | && DECL_INITIAL (decl) != 0 | |
2319 | && (TREE_ADDRESSABLE (decl) | |
2320 | || TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl))) | |
216d5cdd | 2321 | && ! DECL_EXTERNAL (decl)) |
86ef2ef9 RK |
2322 | { |
2323 | temporary_allocation (); | |
2324 | output_inline_function (decl); | |
f030d6e6 | 2325 | permanent_allocation (1); |
86ef2ef9 | 2326 | } |
4291d9c8 | 2327 | |
ac266247 RS |
2328 | /* Warn about any function |
2329 | declared static but not defined. | |
2330 | We don't warn about variables, | |
2331 | because many programs have static variables | |
2332 | that exist only to get some text into the object file. */ | |
4291d9c8 RS |
2333 | if ((warn_unused |
2334 | || TREE_USED (decl) | |
2335 | || (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl)))) | |
ac266247 | 2336 | && TREE_CODE (decl) == FUNCTION_DECL |
4291d9c8 | 2337 | && DECL_INITIAL (decl) == 0 |
216d5cdd | 2338 | && DECL_EXTERNAL (decl) |
4291d9c8 | 2339 | && ! TREE_PUBLIC (decl)) |
7d429c41 | 2340 | { |
aaf44ca2 RS |
2341 | /* This should be a pedwarn, except that there is |
2342 | no easy way to prevent it from happening when the | |
2343 | name is used only inside a sizeof. | |
2344 | This at least avoids being incorrect. */ | |
2345 | warning_with_decl (decl, | |
7d429c41 RS |
2346 | "`%s' declared `static' but never defined"); |
2347 | /* This symbol is effectively an "extern" declaration now. */ | |
2348 | TREE_PUBLIC (decl) = 1; | |
2349 | assemble_external (decl); | |
2350 | ||
2351 | } | |
4291d9c8 | 2352 | /* Warn about static fns or vars defined but not used, |
7062b881 PB |
2353 | but not about inline functions or static consts |
2354 | since defining those in header files is normal practice. */ | |
4291d9c8 | 2355 | if (warn_unused |
7062b881 PB |
2356 | && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) |
2357 | || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
0c20aabf | 2358 | && ! DECL_IN_SYSTEM_HEADER (decl) |
216d5cdd | 2359 | && ! DECL_EXTERNAL (decl) |
4291d9c8 RS |
2360 | && ! TREE_PUBLIC (decl) |
2361 | && ! TREE_USED (decl) | |
f2dabd38 | 2362 | && ! DECL_REGISTER (decl) |
4291d9c8 RS |
2363 | /* The TREE_USED bit for file-scope decls |
2364 | is kept in the identifier, to handle multiple | |
2365 | external decls in different scopes. */ | |
2366 | && ! TREE_USED (DECL_NAME (decl))) | |
2367 | warning_with_decl (decl, "`%s' defined but not used"); | |
2368 | ||
2369 | #ifdef SDB_DEBUGGING_INFO | |
2370 | /* The COFF linker can move initialized global vars to the end. | |
2371 | And that can screw up the symbol ordering. | |
2372 | By putting the symbols in that order to begin with, | |
2373 | we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */ | |
2374 | if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL | |
2375 | && TREE_PUBLIC (decl) && DECL_INITIAL (decl) | |
2376 | && DECL_RTL (decl) != 0) | |
2377 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
2378 | ||
2379 | /* Output COFF information for non-global | |
2380 | file-scope initialized variables. */ | |
2381 | if (write_symbols == SDB_DEBUG | |
2382 | && TREE_CODE (decl) == VAR_DECL | |
2383 | && DECL_INITIAL (decl) | |
2384 | && DECL_RTL (decl) != 0 | |
2385 | && GET_CODE (DECL_RTL (decl)) == MEM) | |
2386 | TIMEVAR (symout_time, sdbout_toplevel_data (decl)); | |
2387 | #endif /* SDB_DEBUGGING_INFO */ | |
2388 | #ifdef DWARF_DEBUGGING_INFO | |
6dc42e49 | 2389 | /* Output DWARF information for file-scope tentative data object |
4291d9c8 RS |
2390 | declarations, file-scope (extern) function declarations (which |
2391 | had no corresponding body) and file-scope tagged type declarations | |
2392 | and definitions which have not yet been forced out. */ | |
2393 | ||
2394 | if (write_symbols == DWARF_DEBUG | |
2395 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
2396 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1)); | |
2397 | #endif | |
2398 | } | |
2399 | } | |
2400 | ||
2401 | /* Do dbx symbols */ | |
f246a305 RS |
2402 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2403 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2404 | TIMEVAR (symout_time, |
2405 | { | |
2406 | dbxout_finish (asm_out_file, main_input_filename); | |
2407 | }); | |
2408 | #endif | |
2409 | ||
2410 | #ifdef DWARF_DEBUGGING_INFO | |
2411 | if (write_symbols == DWARF_DEBUG) | |
2412 | TIMEVAR (symout_time, | |
2413 | { | |
2414 | dwarfout_finish (); | |
2415 | }); | |
2416 | #endif | |
2417 | ||
2418 | /* Output some stuff at end of file if nec. */ | |
2419 | ||
ca695ac9 JB |
2420 | if (!output_bytecode) |
2421 | { | |
2422 | end_final (main_input_filename); | |
4291d9c8 RS |
2423 | |
2424 | #ifdef ASM_FILE_END | |
ca695ac9 | 2425 | ASM_FILE_END (asm_out_file); |
4291d9c8 | 2426 | #endif |
ca695ac9 | 2427 | } |
4291d9c8 | 2428 | |
4291d9c8 RS |
2429 | /* Language-specific end of compilation actions. */ |
2430 | ||
2431 | lang_finish (); | |
2432 | ||
0207ea82 RK |
2433 | if (output_bytecode) |
2434 | bc_write_file (asm_out_file); | |
2435 | ||
4291d9c8 RS |
2436 | /* Close the dump files. */ |
2437 | ||
2438 | if (flag_gen_aux_info) | |
2439 | { | |
2440 | fclose (aux_info_file); | |
2441 | if (errorcount) | |
2442 | unlink (aux_info_file_name); | |
2443 | } | |
2444 | ||
2445 | if (rtl_dump) | |
2446 | fclose (rtl_dump_file); | |
2447 | ||
2448 | if (jump_opt_dump) | |
2449 | fclose (jump_opt_dump_file); | |
2450 | ||
2451 | if (cse_dump) | |
2452 | fclose (cse_dump_file); | |
2453 | ||
2454 | if (loop_dump) | |
2455 | fclose (loop_dump_file); | |
2456 | ||
2457 | if (cse2_dump) | |
2458 | fclose (cse2_dump_file); | |
2459 | ||
2460 | if (flow_dump) | |
2461 | fclose (flow_dump_file); | |
2462 | ||
2463 | if (combine_dump) | |
2464 | { | |
2465 | dump_combine_total_stats (combine_dump_file); | |
2466 | fclose (combine_dump_file); | |
2467 | } | |
2468 | ||
2469 | if (sched_dump) | |
2470 | fclose (sched_dump_file); | |
2471 | ||
2472 | if (local_reg_dump) | |
2473 | fclose (local_reg_dump_file); | |
2474 | ||
2475 | if (global_reg_dump) | |
2476 | fclose (global_reg_dump_file); | |
2477 | ||
2478 | if (sched2_dump) | |
2479 | fclose (sched2_dump_file); | |
2480 | ||
2481 | if (jump2_opt_dump) | |
2482 | fclose (jump2_opt_dump_file); | |
2483 | ||
2484 | if (dbr_sched_dump) | |
2485 | fclose (dbr_sched_dump_file); | |
2486 | ||
2487 | #ifdef STACK_REGS | |
2488 | if (stack_reg_dump) | |
2489 | fclose (stack_reg_dump_file); | |
2490 | #endif | |
2491 | ||
2492 | /* Close non-debugging input and output files. Take special care to note | |
2493 | whether fclose returns an error, since the pages might still be on the | |
2494 | buffer chain while the file is open. */ | |
2495 | ||
2496 | fclose (finput); | |
2497 | if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0) | |
2498 | fatal_io_error (asm_file_name); | |
2499 | ||
2500 | /* Print the times. */ | |
2501 | ||
2502 | if (! quiet_flag) | |
2503 | { | |
2504 | fprintf (stderr,"\n"); | |
2505 | print_time ("parse", parse_time); | |
ca695ac9 JB |
2506 | |
2507 | if (!output_bytecode) | |
2508 | { | |
2509 | print_time ("integration", integration_time); | |
2510 | print_time ("jump", jump_time); | |
2511 | print_time ("cse", cse_time); | |
2512 | print_time ("loop", loop_time); | |
2513 | print_time ("cse2", cse2_time); | |
2514 | print_time ("flow", flow_time); | |
2515 | print_time ("combine", combine_time); | |
2516 | print_time ("sched", sched_time); | |
2517 | print_time ("local-alloc", local_alloc_time); | |
2518 | print_time ("global-alloc", global_alloc_time); | |
2519 | print_time ("sched2", sched2_time); | |
2520 | print_time ("dbranch", dbr_sched_time); | |
2521 | print_time ("shorten-branch", shorten_branch_time); | |
2522 | print_time ("stack-reg", stack_reg_time); | |
2523 | print_time ("final", final_time); | |
2524 | print_time ("varconst", varconst_time); | |
2525 | print_time ("symout", symout_time); | |
2526 | print_time ("dump", dump_time); | |
2527 | } | |
4291d9c8 RS |
2528 | } |
2529 | } | |
2530 | \f | |
2531 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
2532 | and TYPE_DECL nodes. | |
2533 | ||
2534 | This does nothing for local (non-static) variables. | |
2535 | Otherwise, it sets up the RTL and outputs any assembler code | |
2536 | (label definition, storage allocation and initialization). | |
2537 | ||
2538 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2539 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2540 | if this declaration is not within a function. */ | |
2541 | ||
2542 | void | |
2543 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
2544 | tree decl; | |
2545 | char *asmspec; | |
2546 | int top_level; | |
2547 | int at_end; | |
2548 | { | |
2549 | /* Declarations of variables, and of functions defined elsewhere. */ | |
2550 | ||
928eb380 RS |
2551 | /* The most obvious approach, to put an #ifndef around where |
2552 | this macro is used, doesn't work since it's inside a macro call. */ | |
2553 | #ifndef ASM_FINISH_DECLARE_OBJECT | |
2554 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) | |
2555 | #endif | |
2556 | ||
4291d9c8 RS |
2557 | /* Forward declarations for nested functions are not "external", |
2558 | but we need to treat them as if they were. */ | |
216d5cdd | 2559 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 RS |
2560 | || TREE_CODE (decl) == FUNCTION_DECL) |
2561 | TIMEVAR (varconst_time, | |
2562 | { | |
2563 | make_decl_rtl (decl, asmspec, top_level); | |
9a9a9643 RS |
2564 | /* Initialized extern variable exists to be replaced |
2565 | with its value, or represents something that will be | |
2566 | output in another file. */ | |
6dbf678a | 2567 | if (! (TREE_CODE (decl) == VAR_DECL |
9a9a9643 RS |
2568 | && DECL_EXTERNAL (decl) && TREE_READONLY (decl) |
2569 | && DECL_INITIAL (decl) != 0 | |
5b272d50 | 2570 | && DECL_INITIAL (decl) != error_mark_node)) |
6dbf678a RS |
2571 | /* Don't output anything |
2572 | when a tentative file-scope definition is seen. | |
2573 | But at end of compilation, do output code for them. */ | |
2574 | if (! (! at_end && top_level | |
2575 | && (DECL_INITIAL (decl) == 0 | |
9a9a9643 | 2576 | || DECL_INITIAL (decl) == error_mark_node))) |
8380e2f2 | 2577 | assemble_variable (decl, top_level, at_end, 0); |
5e10b3cc RS |
2578 | if (decl == last_assemble_variable_decl) |
2579 | { | |
2580 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2581 | top_level, at_end); | |
2582 | } | |
4291d9c8 | 2583 | }); |
216d5cdd | 2584 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2585 | { |
2586 | if (decode_reg_name (asmspec) >= 0) | |
2587 | { | |
2588 | DECL_RTL (decl) = 0; | |
2589 | make_decl_rtl (decl, asmspec, top_level); | |
2590 | } | |
2591 | else | |
2592 | error ("invalid register name `%s' for register variable", asmspec); | |
2593 | } | |
f246a305 RS |
2594 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2595 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2596 | && TREE_CODE (decl) == TYPE_DECL) | |
4291d9c8 RS |
2597 | TIMEVAR (symout_time, dbxout_symbol (decl, 0)); |
2598 | #endif | |
2599 | #ifdef SDB_DEBUGGING_INFO | |
2600 | else if (write_symbols == SDB_DEBUG && top_level | |
2601 | && TREE_CODE (decl) == TYPE_DECL) | |
2602 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
2603 | #endif | |
2604 | } | |
2605 | ||
2606 | /* Called after finishing a record, union or enumeral type. */ | |
2607 | ||
2608 | void | |
2609 | rest_of_type_compilation (type, toplev) | |
2610 | tree type; | |
2611 | int toplev; | |
2612 | { | |
f246a305 RS |
2613 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2614 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2615 | TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev)); |
2616 | #endif | |
2617 | #ifdef SDB_DEBUGGING_INFO | |
2618 | if (write_symbols == SDB_DEBUG) | |
2619 | TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev)); | |
2620 | #endif | |
2621 | } | |
2622 | ||
2623 | /* This is called from finish_function (within yyparse) | |
2624 | after each top-level definition is parsed. | |
2625 | It is supposed to compile that function or variable | |
2626 | and output the assembler code for it. | |
2627 | After we return, the tree storage is freed. */ | |
2628 | ||
2629 | void | |
2630 | rest_of_compilation (decl) | |
2631 | tree decl; | |
2632 | { | |
2633 | register rtx insns; | |
2634 | int start_time = get_run_time (); | |
2635 | int tem; | |
2636 | /* Nonzero if we have saved the original DECL_INITIAL of the function, | |
2637 | to be restored after we finish compiling the function | |
2638 | (for use when compiling inline calls to this function). */ | |
2639 | tree saved_block_tree = 0; | |
8a958768 RS |
2640 | /* Likewise, for DECL_ARGUMENTS. */ |
2641 | tree saved_arguments = 0; | |
ab40ad2b | 2642 | int failure = 0; |
4291d9c8 | 2643 | |
ca695ac9 JB |
2644 | if (output_bytecode) |
2645 | return; | |
2646 | ||
4291d9c8 RS |
2647 | /* If we are reconsidering an inline function |
2648 | at the end of compilation, skip the stuff for making it inline. */ | |
2649 | ||
2650 | if (DECL_SAVED_INSNS (decl) == 0) | |
2651 | { | |
216d5cdd | 2652 | int specd = DECL_INLINE (decl); |
4291d9c8 RS |
2653 | char *lose; |
2654 | ||
2655 | /* If requested, consider whether to make this function inline. */ | |
2656 | if (specd || flag_inline_functions) | |
2657 | TIMEVAR (integration_time, | |
2658 | { | |
2659 | lose = function_cannot_inline_p (decl); | |
caa0eccd JL |
2660 | /* If not optimzing, then make sure the DECL_INLINE |
2661 | bit is off. */ | |
2662 | if (lose || ! optimize) | |
4291d9c8 RS |
2663 | { |
2664 | if (warn_inline && specd) | |
2665 | warning_with_decl (decl, lose); | |
216d5cdd | 2666 | DECL_INLINE (decl) = 0; |
46dbb914 RS |
2667 | /* Don't really compile an extern inline function. |
2668 | If we can't make it inline, pretend | |
2669 | it was only declared. */ | |
2670 | if (DECL_EXTERNAL (decl)) | |
27937f46 RS |
2671 | { |
2672 | DECL_INITIAL (decl) = 0; | |
2673 | goto exit_rest_of_compilation; | |
2674 | } | |
4291d9c8 RS |
2675 | } |
2676 | else | |
216d5cdd | 2677 | DECL_INLINE (decl) = 1; |
4291d9c8 RS |
2678 | }); |
2679 | ||
2680 | insns = get_insns (); | |
2681 | ||
2682 | /* Dump the rtl code if we are dumping rtl. */ | |
2683 | ||
2684 | if (rtl_dump) | |
2685 | TIMEVAR (dump_time, | |
2686 | { | |
2687 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", | |
2688 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2689 | if (DECL_SAVED_INSNS (decl)) | |
2690 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
2691 | print_rtl (rtl_dump_file, insns); | |
2692 | fflush (rtl_dump_file); | |
2693 | }); | |
2694 | ||
2695 | /* If function is inline, and we don't yet know whether to | |
2696 | compile it by itself, defer decision till end of compilation. | |
2697 | finish_compilation will call rest_of_compilation again | |
16411ea6 RK |
2698 | for those functions that need to be output. Also defer those |
2699 | functions that were marked inline but weren't inlined; they | |
2700 | may never be used. */ | |
4291d9c8 | 2701 | |
16411ea6 | 2702 | if ((specd || DECL_INLINE (decl)) |
4291d9c8 RS |
2703 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) |
2704 | && ! flag_keep_inline_functions) | |
216d5cdd | 2705 | || DECL_EXTERNAL (decl))) |
4291d9c8 | 2706 | { |
937522b5 RS |
2707 | #ifdef DWARF_DEBUGGING_INFO |
2708 | /* Generate the DWARF info for the "abstract" instance | |
2709 | of a function which we may later generate inlined and/or | |
2710 | out-of-line instances of. */ | |
2711 | if (write_symbols == DWARF_DEBUG) | |
2712 | { | |
2713 | set_decl_abstract_flags (decl, 1); | |
2714 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
2715 | set_decl_abstract_flags (decl, 0); | |
2716 | } | |
2717 | #endif | |
4291d9c8 RS |
2718 | TIMEVAR (integration_time, save_for_inline_nocopy (decl)); |
2719 | goto exit_rest_of_compilation; | |
2720 | } | |
2721 | ||
8a958768 | 2722 | /* If we have to compile the function now, save its rtl and subdecls |
4291d9c8 | 2723 | so that its compilation will not affect what others get. */ |
216d5cdd | 2724 | if (DECL_INLINE (decl)) |
4291d9c8 | 2725 | { |
937522b5 RS |
2726 | #ifdef DWARF_DEBUGGING_INFO |
2727 | /* Generate the DWARF info for the "abstract" instance of | |
2728 | a function which we will generate an out-of-line instance | |
2729 | of almost immediately (and which we may also later generate | |
2730 | various inlined instances of). */ | |
2731 | if (write_symbols == DWARF_DEBUG) | |
2732 | { | |
2733 | set_decl_abstract_flags (decl, 1); | |
2734 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
2735 | set_decl_abstract_flags (decl, 0); | |
2736 | } | |
2737 | #endif | |
4291d9c8 | 2738 | saved_block_tree = DECL_INITIAL (decl); |
8a958768 | 2739 | saved_arguments = DECL_ARGUMENTS (decl); |
4291d9c8 RS |
2740 | TIMEVAR (integration_time, save_for_inline_copying (decl)); |
2741 | } | |
2742 | } | |
2743 | ||
4291d9c8 RS |
2744 | TREE_ASM_WRITTEN (decl) = 1; |
2745 | ||
2746 | /* Now that integrate will no longer see our rtl, we need not distinguish | |
2747 | between the return value of this function and the return value of called | |
2748 | functions. */ | |
2749 | rtx_equal_function_value_matters = 0; | |
2750 | ||
32235b30 RS |
2751 | /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */ |
2752 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
4291d9c8 RS |
2753 | { |
2754 | goto exit_rest_of_compilation; | |
2755 | } | |
2756 | ||
2757 | /* From now on, allocate rtl in current_obstack, not in saveable_obstack. | |
2758 | Note that that may have been done above, in save_for_inline_copying. | |
2759 | The call to resume_temporary_allocation near the end of this function | |
2760 | goes back to the usual state of affairs. */ | |
2761 | ||
2762 | rtl_in_current_obstack (); | |
2763 | ||
2764 | #ifdef FINALIZE_PIC | |
2765 | /* If we are doing position-independent code generation, now | |
2766 | is the time to output special prologues and epilogues. | |
2767 | We do not want to do this earlier, because it just clutters | |
2768 | up inline functions with meaningless insns. */ | |
2769 | if (flag_pic) | |
2770 | FINALIZE_PIC; | |
2771 | #endif | |
2772 | ||
2773 | insns = get_insns (); | |
2774 | ||
2775 | /* Copy any shared structure that should not be shared. */ | |
2776 | ||
2777 | unshare_all_rtl (insns); | |
2778 | ||
2779 | /* Instantiate all virtual registers. */ | |
2780 | ||
2781 | instantiate_virtual_regs (current_function_decl, get_insns ()); | |
2782 | ||
2783 | /* See if we have allocated stack slots that are not directly addressable. | |
2784 | If so, scan all the insns and create explicit address computation | |
2785 | for all references to such slots. */ | |
2786 | /* fixup_stack_slots (); */ | |
2787 | ||
2788 | /* Do jump optimization the first time, if -opt. | |
2789 | Also do it if -W, but in that case it doesn't change the rtl code, | |
2790 | it only computes whether control can drop off the end of the function. */ | |
2791 | ||
2792 | if (optimize > 0 || extra_warnings || warn_return_type | |
8e158db4 | 2793 | /* If function is `noreturn', we should warn if it tries to return. */ |
4291d9c8 RS |
2794 | || TREE_THIS_VOLATILE (decl)) |
2795 | { | |
2796 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
2797 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1)); | |
2798 | } | |
2799 | ||
32235b30 RS |
2800 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
2801 | if (rtl_dump_and_exit || flag_syntax_only) | |
2802 | goto exit_rest_of_compilation; | |
2803 | ||
4291d9c8 RS |
2804 | /* Dump rtl code after jump, if we are doing that. */ |
2805 | ||
2806 | if (jump_opt_dump) | |
2807 | TIMEVAR (dump_time, | |
2808 | { | |
2809 | fprintf (jump_opt_dump_file, "\n;; Function %s\n\n", | |
2810 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2811 | print_rtl (jump_opt_dump_file, insns); | |
2812 | fflush (jump_opt_dump_file); | |
2813 | }); | |
2814 | ||
2815 | /* Perform common subexpression elimination. | |
2816 | Nonzero value from `cse_main' means that jumps were simplified | |
2817 | and some code may now be unreachable, so do | |
2818 | jump optimization again. */ | |
2819 | ||
2820 | if (cse_dump) | |
2821 | TIMEVAR (dump_time, | |
2822 | { | |
2823 | fprintf (cse_dump_file, "\n;; Function %s\n\n", | |
2824 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2825 | }); | |
2826 | ||
2827 | if (optimize > 0) | |
2828 | { | |
2829 | TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1)); | |
2830 | ||
2831 | if (flag_thread_jumps) | |
2832 | /* Hacks by tiemann & kenner. */ | |
6f606d63 | 2833 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1)); |
4291d9c8 RS |
2834 | |
2835 | TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (), | |
2836 | 0, cse_dump_file)); | |
2837 | TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ())); | |
2838 | ||
2839 | if (tem) | |
2840 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0)); | |
2841 | } | |
2842 | ||
2843 | /* Dump rtl code after cse, if we are doing that. */ | |
2844 | ||
2845 | if (cse_dump) | |
2846 | TIMEVAR (dump_time, | |
2847 | { | |
2848 | print_rtl (cse_dump_file, insns); | |
2849 | fflush (cse_dump_file); | |
2850 | }); | |
2851 | ||
2852 | if (loop_dump) | |
2853 | TIMEVAR (dump_time, | |
2854 | { | |
2855 | fprintf (loop_dump_file, "\n;; Function %s\n\n", | |
2856 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2857 | }); | |
2858 | ||
2859 | /* Move constant computations out of loops. */ | |
2860 | ||
2861 | if (optimize > 0) | |
2862 | { | |
2863 | TIMEVAR (loop_time, | |
2864 | { | |
37366632 | 2865 | loop_optimize (insns, loop_dump_file); |
4291d9c8 RS |
2866 | }); |
2867 | } | |
2868 | ||
2869 | /* Dump rtl code after loop opt, if we are doing that. */ | |
2870 | ||
2871 | if (loop_dump) | |
2872 | TIMEVAR (dump_time, | |
2873 | { | |
2874 | print_rtl (loop_dump_file, insns); | |
2875 | fflush (loop_dump_file); | |
2876 | }); | |
2877 | ||
2878 | if (cse2_dump) | |
2879 | TIMEVAR (dump_time, | |
2880 | { | |
2881 | fprintf (cse2_dump_file, "\n;; Function %s\n\n", | |
2882 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2883 | }); | |
2884 | ||
2885 | if (optimize > 0 && flag_rerun_cse_after_loop) | |
2886 | { | |
44333223 JL |
2887 | /* Running another jump optimization pass before the second |
2888 | cse pass sometimes simplifies the RTL enough to allow | |
9e9b48a4 DE |
2889 | the second CSE pass to do a better job. Jump_optimize can change |
2890 | max_reg_num so we must rerun reg_scan afterwards. | |
2891 | ??? Rework to not call reg_scan so often. */ | |
2892 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
44333223 | 2893 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1)); |
4291d9c8 | 2894 | |
9e9b48a4 | 2895 | TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0)); |
4291d9c8 RS |
2896 | TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (), |
2897 | 1, cse2_dump_file)); | |
2898 | if (tem) | |
2899 | TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0)); | |
2900 | } | |
2901 | ||
2902 | if (optimize > 0 && flag_thread_jumps) | |
2903 | /* This pass of jump threading straightens out code | |
2904 | that was kinked by loop optimization. */ | |
2905 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0)); | |
2906 | ||
2907 | /* Dump rtl code after cse, if we are doing that. */ | |
2908 | ||
2909 | if (cse2_dump) | |
2910 | TIMEVAR (dump_time, | |
2911 | { | |
2912 | print_rtl (cse2_dump_file, insns); | |
2913 | fflush (cse2_dump_file); | |
2914 | }); | |
2915 | ||
2916 | /* We are no longer anticipating cse in this function, at least. */ | |
2917 | ||
2918 | cse_not_expected = 1; | |
2919 | ||
2920 | /* Now we choose between stupid (pcc-like) register allocation | |
2921 | (if we got the -noreg switch and not -opt) | |
2922 | and smart register allocation. */ | |
2923 | ||
2924 | if (optimize > 0) /* Stupid allocation probably won't work */ | |
2925 | obey_regdecls = 0; /* if optimizations being done. */ | |
2926 | ||
2927 | regclass_init (); | |
2928 | ||
2929 | /* Print function header into flow dump now | |
2930 | because doing the flow analysis makes some of the dump. */ | |
2931 | ||
2932 | if (flow_dump) | |
2933 | TIMEVAR (dump_time, | |
2934 | { | |
2935 | fprintf (flow_dump_file, "\n;; Function %s\n\n", | |
2936 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2937 | }); | |
2938 | ||
2939 | if (obey_regdecls) | |
2940 | { | |
2941 | TIMEVAR (flow_time, | |
2942 | { | |
2943 | regclass (insns, max_reg_num ()); | |
2944 | stupid_life_analysis (insns, max_reg_num (), | |
2945 | flow_dump_file); | |
2946 | }); | |
2947 | } | |
2948 | else | |
2949 | { | |
2950 | /* Do control and data flow analysis, | |
2951 | and write some of the results to dump file. */ | |
2952 | ||
2953 | TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (), | |
2954 | flow_dump_file)); | |
2955 | if (warn_uninitialized) | |
2956 | { | |
2957 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
2958 | setjmp_args_warning (); | |
2959 | } | |
2960 | } | |
2961 | ||
2962 | /* Dump rtl after flow analysis. */ | |
2963 | ||
2964 | if (flow_dump) | |
2965 | TIMEVAR (dump_time, | |
2966 | { | |
2967 | print_rtl (flow_dump_file, insns); | |
2968 | fflush (flow_dump_file); | |
2969 | }); | |
2970 | ||
2971 | /* If -opt, try combining insns through substitution. */ | |
2972 | ||
2973 | if (optimize > 0) | |
2974 | TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ())); | |
2975 | ||
2976 | /* Dump rtl code after insn combination. */ | |
2977 | ||
2978 | if (combine_dump) | |
2979 | TIMEVAR (dump_time, | |
2980 | { | |
2981 | fprintf (combine_dump_file, "\n;; Function %s\n\n", | |
2982 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2983 | dump_combine_stats (combine_dump_file); | |
2984 | print_rtl (combine_dump_file, insns); | |
2985 | fflush (combine_dump_file); | |
2986 | }); | |
2987 | ||
2988 | /* Print function header into sched dump now | |
2989 | because doing the sched analysis makes some of the dump. */ | |
2990 | ||
2991 | if (sched_dump) | |
2992 | TIMEVAR (dump_time, | |
2993 | { | |
2994 | fprintf (sched_dump_file, "\n;; Function %s\n\n", | |
2995 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
2996 | }); | |
2997 | ||
2998 | if (optimize > 0 && flag_schedule_insns) | |
2999 | { | |
3000 | /* Do control and data sched analysis, | |
3001 | and write some of the results to dump file. */ | |
3002 | ||
3003 | TIMEVAR (sched_time, schedule_insns (sched_dump_file)); | |
3004 | } | |
3005 | ||
3006 | /* Dump rtl after instruction scheduling. */ | |
3007 | ||
3008 | if (sched_dump) | |
3009 | TIMEVAR (dump_time, | |
3010 | { | |
3011 | print_rtl (sched_dump_file, insns); | |
3012 | fflush (sched_dump_file); | |
3013 | }); | |
3014 | ||
3015 | /* Unless we did stupid register allocation, | |
3016 | allocate pseudo-regs that are used only within 1 basic block. */ | |
3017 | ||
3018 | if (!obey_regdecls) | |
3019 | TIMEVAR (local_alloc_time, | |
3020 | { | |
3021 | regclass (insns, max_reg_num ()); | |
3022 | local_alloc (); | |
3023 | }); | |
3024 | ||
3025 | /* Dump rtl code after allocating regs within basic blocks. */ | |
3026 | ||
3027 | if (local_reg_dump) | |
3028 | TIMEVAR (dump_time, | |
3029 | { | |
3030 | fprintf (local_reg_dump_file, "\n;; Function %s\n\n", | |
3031 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
3032 | dump_flow_info (local_reg_dump_file); | |
3033 | dump_local_alloc (local_reg_dump_file); | |
3034 | print_rtl (local_reg_dump_file, insns); | |
3035 | fflush (local_reg_dump_file); | |
3036 | }); | |
3037 | ||
3038 | if (global_reg_dump) | |
3039 | TIMEVAR (dump_time, | |
3040 | fprintf (global_reg_dump_file, "\n;; Function %s\n\n", | |
3041 | IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
3042 | ||
3043 | /* Unless we did stupid register allocation, | |
3044 | allocate remaining pseudo-regs, then do the reload pass | |
3045 | fixing up any insns that are invalid. */ | |
3046 | ||
3047 | TIMEVAR (global_alloc_time, | |
3048 | { | |
3049 | if (!obey_regdecls) | |
37366632 | 3050 | failure = global_alloc (global_reg_dump_file); |
4291d9c8 | 3051 | else |
37366632 | 3052 | failure = reload (insns, 0, global_reg_dump_file); |
4291d9c8 RS |
3053 | }); |
3054 | ||
3055 | if (global_reg_dump) | |
3056 | TIMEVAR (dump_time, | |
3057 | { | |
3058 | dump_global_regs (global_reg_dump_file); | |
3059 | print_rtl (global_reg_dump_file, insns); | |
3060 | fflush (global_reg_dump_file); | |
3061 | }); | |
3062 | ||
ab40ad2b RS |
3063 | if (failure) |
3064 | goto exit_rest_of_compilation; | |
3065 | ||
4291d9c8 RS |
3066 | reload_completed = 1; |
3067 | ||
bdac5f58 TW |
3068 | /* On some machines, the prologue and epilogue code, or parts thereof, |
3069 | can be represented as RTL. Doing so lets us schedule insns between | |
3070 | it and the rest of the code and also allows delayed branch | |
3071 | scheduling to operate in the epilogue. */ | |
3072 | ||
3073 | thread_prologue_and_epilogue_insns (insns); | |
3074 | ||
4291d9c8 RS |
3075 | if (optimize > 0 && flag_schedule_insns_after_reload) |
3076 | { | |
3077 | if (sched2_dump) | |
3078 | TIMEVAR (dump_time, | |
3079 | { | |
3080 | fprintf (sched2_dump_file, "\n;; Function %s\n\n", | |
3081 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
3082 | }); | |
3083 | ||
3084 | /* Do control and data sched analysis again, | |
3085 | and write some more of the results to dump file. */ | |
3086 | ||
3087 | TIMEVAR (sched2_time, schedule_insns (sched2_dump_file)); | |
3088 | ||
3089 | /* Dump rtl after post-reorder instruction scheduling. */ | |
3090 | ||
3091 | if (sched2_dump) | |
3092 | TIMEVAR (dump_time, | |
3093 | { | |
3094 | print_rtl (sched2_dump_file, insns); | |
3095 | fflush (sched2_dump_file); | |
3096 | }); | |
3097 | } | |
3098 | ||
3099 | #ifdef LEAF_REGISTERS | |
3100 | leaf_function = 0; | |
3101 | if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ()) | |
ab40ad2b | 3102 | leaf_function = 1; |
4291d9c8 RS |
3103 | #endif |
3104 | ||
3105 | /* One more attempt to remove jumps to .+1 | |
3106 | left by dead-store-elimination. | |
3107 | Also do cross-jumping this time | |
3108 | and delete no-op move insns. */ | |
3109 | ||
3110 | if (optimize > 0) | |
3111 | { | |
3112 | TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0)); | |
3113 | } | |
3114 | ||
3115 | /* Dump rtl code after jump, if we are doing that. */ | |
3116 | ||
3117 | if (jump2_opt_dump) | |
3118 | TIMEVAR (dump_time, | |
3119 | { | |
3120 | fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n", | |
3121 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
3122 | print_rtl (jump2_opt_dump_file, insns); | |
3123 | fflush (jump2_opt_dump_file); | |
3124 | }); | |
3125 | ||
2c65021a RK |
3126 | /* If a machine dependent reorganization is needed, call it. */ |
3127 | #ifdef MACHINE_DEPENDENT_REORG | |
3128 | MACHINE_DEPENDENT_REORG (insns); | |
3129 | #endif | |
3130 | ||
4291d9c8 RS |
3131 | /* If a scheduling pass for delayed branches is to be done, |
3132 | call the scheduling code. */ | |
3133 | ||
3134 | #ifdef DELAY_SLOTS | |
3135 | if (optimize > 0 && flag_delayed_branch) | |
3136 | { | |
3137 | TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file)); | |
3138 | if (dbr_sched_dump) | |
3139 | { | |
3140 | TIMEVAR (dump_time, | |
3141 | { | |
3142 | fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n", | |
3143 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
3144 | print_rtl (dbr_sched_dump_file, insns); | |
3145 | fflush (dbr_sched_dump_file); | |
3146 | }); | |
3147 | } | |
3148 | } | |
3149 | #endif | |
3150 | ||
3151 | if (optimize > 0) | |
3152 | /* Shorten branches. */ | |
3153 | TIMEVAR (shorten_branch_time, | |
3154 | { | |
3155 | shorten_branches (get_insns ()); | |
3156 | }); | |
3157 | ||
3158 | #ifdef STACK_REGS | |
3159 | TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file)); | |
3160 | if (stack_reg_dump) | |
3161 | { | |
3162 | TIMEVAR (dump_time, | |
3163 | { | |
3164 | fprintf (stack_reg_dump_file, "\n;; Function %s\n\n", | |
3165 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
3166 | print_rtl (stack_reg_dump_file, insns); | |
3167 | fflush (stack_reg_dump_file); | |
3168 | }); | |
3169 | } | |
3170 | #endif | |
3171 | ||
3172 | /* Now turn the rtl into assembler code. */ | |
3173 | ||
3174 | TIMEVAR (final_time, | |
3175 | { | |
3176 | rtx x; | |
3177 | char *fnname; | |
3178 | ||
3179 | /* Get the function's name, as described by its RTL. | |
3180 | This may be different from the DECL_NAME name used | |
3181 | in the source file. */ | |
3182 | ||
3183 | x = DECL_RTL (decl); | |
3184 | if (GET_CODE (x) != MEM) | |
3185 | abort (); | |
3186 | x = XEXP (x, 0); | |
3187 | if (GET_CODE (x) != SYMBOL_REF) | |
3188 | abort (); | |
3189 | fnname = XSTR (x, 0); | |
3190 | ||
3191 | assemble_start_function (decl, fnname); | |
3192 | final_start_function (insns, asm_out_file, optimize); | |
3193 | final (insns, asm_out_file, optimize, 0); | |
3194 | final_end_function (insns, asm_out_file, optimize); | |
3195 | assemble_end_function (decl, fnname); | |
3196 | fflush (asm_out_file); | |
3197 | }); | |
3198 | ||
3199 | /* Write DBX symbols if requested */ | |
3200 | ||
3201 | /* Note that for those inline functions where we don't initially | |
3202 | know for certain that we will be generating an out-of-line copy, | |
3203 | the first invocation of this routine (rest_of_compilation) will | |
3204 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
3205 | Later on, finish_compilation will call rest_of_compilation again | |
3206 | for those inline functions that need to have out-of-line copies | |
3207 | generated. During that call, we *will* be routed past here. */ | |
3208 | ||
3209 | #ifdef DBX_DEBUGGING_INFO | |
3210 | if (write_symbols == DBX_DEBUG) | |
3211 | TIMEVAR (symout_time, dbxout_function (decl)); | |
3212 | #endif | |
3213 | ||
3214 | #ifdef DWARF_DEBUGGING_INFO | |
3215 | if (write_symbols == DWARF_DEBUG) | |
3216 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
3217 | #endif | |
3218 | ||
3219 | exit_rest_of_compilation: | |
3220 | ||
f246a305 RS |
3221 | /* In case the function was not output, |
3222 | don't leave any temporary anonymous types | |
3223 | queued up for sdb output. */ | |
3224 | #ifdef SDB_DEBUGGING_INFO | |
3225 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3226 | sdbout_types (NULL_TREE); |
f246a305 RS |
3227 | #endif |
3228 | ||
8a958768 RS |
3229 | /* Put back the tree of subblocks and list of arguments |
3230 | from before we copied them. | |
4291d9c8 RS |
3231 | Code generation and the output of debugging info may have modified |
3232 | the copy, but the original is unchanged. */ | |
3233 | ||
3234 | if (saved_block_tree != 0) | |
3235 | DECL_INITIAL (decl) = saved_block_tree; | |
8a958768 RS |
3236 | if (saved_arguments != 0) |
3237 | DECL_ARGUMENTS (decl) = saved_arguments; | |
4291d9c8 RS |
3238 | |
3239 | reload_completed = 0; | |
3240 | ||
3241 | /* Clear out the real_constant_chain before some of the rtx's | |
3242 | it runs through become garbage. */ | |
3243 | ||
3244 | clear_const_double_mem (); | |
3245 | ||
3246 | /* Cancel the effect of rtl_in_current_obstack. */ | |
3247 | ||
3248 | resume_temporary_allocation (); | |
3249 | ||
3250 | /* The parsing time is all the time spent in yyparse | |
3251 | *except* what is spent in this function. */ | |
3252 | ||
3253 | parse_time -= get_run_time () - start_time; | |
3254 | } | |
3255 | \f | |
3256 | /* Entry point of cc1/c++. Decode command args, then call compile_file. | |
3257 | Exit code is 35 if can't open files, 34 if fatal error, | |
3258 | 33 if had nonfatal errors, else success. */ | |
3259 | ||
3260 | int | |
3261 | main (argc, argv, envp) | |
3262 | int argc; | |
3263 | char **argv; | |
3264 | char **envp; | |
3265 | { | |
3266 | register int i; | |
3267 | char *filename = 0; | |
3268 | int flag_print_mem = 0; | |
3269 | int version_flag = 0; | |
3270 | char *p; | |
3271 | ||
3272 | /* save in case md file wants to emit args as a comment. */ | |
3273 | save_argc = argc; | |
3274 | save_argv = argv; | |
3275 | ||
3276 | p = argv[0] + strlen (argv[0]); | |
3277 | while (p != argv[0] && p[-1] != '/') --p; | |
3278 | progname = p; | |
3279 | ||
3280 | #ifdef RLIMIT_STACK | |
3281 | /* Get rid of any avoidable limit on stack size. */ | |
3282 | { | |
3283 | struct rlimit rlim; | |
3284 | ||
3285 | /* Set the stack limit huge so that alloca does not fail. */ | |
3286 | getrlimit (RLIMIT_STACK, &rlim); | |
3287 | rlim.rlim_cur = rlim.rlim_max; | |
3288 | setrlimit (RLIMIT_STACK, &rlim); | |
3289 | } | |
3290 | #endif /* RLIMIT_STACK */ | |
3291 | ||
3292 | signal (SIGFPE, float_signal); | |
3293 | ||
935d4b07 | 3294 | #ifdef SIGPIPE |
4291d9c8 | 3295 | signal (SIGPIPE, pipe_closed); |
935d4b07 | 3296 | #endif |
4291d9c8 RS |
3297 | |
3298 | decl_printable_name = decl_name; | |
3299 | lang_expand_expr = (struct rtx_def *(*)()) do_abort; | |
3300 | ||
3301 | /* Initialize whether `char' is signed. */ | |
3302 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
3303 | #ifdef DEFAULT_SHORT_ENUMS | |
3304 | /* Initialize how much space enums occupy, by default. */ | |
3305 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
3306 | #endif | |
3307 | ||
3308 | /* Scan to see what optimization level has been specified. That will | |
3309 | determine the default value of many flags. */ | |
3310 | for (i = 1; i < argc; i++) | |
3311 | { | |
3312 | if (!strcmp (argv[i], "-O")) | |
3313 | { | |
3314 | optimize = 1; | |
3315 | } | |
3316 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
3317 | { | |
3318 | /* Handle -O2, -O3, -O69, ... */ | |
3319 | char *p = &argv[i][2]; | |
3320 | int c; | |
3321 | ||
3322 | while (c = *p++) | |
3323 | if (! (c >= '0' && c <= '9')) | |
3324 | break; | |
3325 | if (c == 0) | |
3326 | optimize = atoi (&argv[i][2]); | |
3327 | } | |
3328 | } | |
3329 | ||
3330 | obey_regdecls = (optimize == 0); | |
f246a305 RS |
3331 | if (optimize == 0) |
3332 | { | |
3333 | flag_no_inline = 1; | |
3334 | warn_inline = 0; | |
3335 | } | |
4291d9c8 RS |
3336 | |
3337 | if (optimize >= 1) | |
3338 | { | |
6731a3e3 | 3339 | flag_defer_pop = 1; |
4291d9c8 RS |
3340 | flag_thread_jumps = 1; |
3341 | #ifdef DELAY_SLOTS | |
3342 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
3343 | #endif |
3344 | #ifdef CAN_DEBUG_WITHOUT_FP | |
3345 | flag_omit_frame_pointer = 1; | |
4291d9c8 RS |
3346 | #endif |
3347 | } | |
3348 | ||
3349 | if (optimize >= 2) | |
3350 | { | |
3351 | flag_cse_follow_jumps = 1; | |
8b3686ed | 3352 | flag_cse_skip_blocks = 1; |
4291d9c8 RS |
3353 | flag_expensive_optimizations = 1; |
3354 | flag_strength_reduce = 1; | |
3355 | flag_rerun_cse_after_loop = 1; | |
ac266247 | 3356 | flag_caller_saves = 1; |
4291d9c8 RS |
3357 | #ifdef INSN_SCHEDULING |
3358 | flag_schedule_insns = 1; | |
3359 | flag_schedule_insns_after_reload = 1; | |
3360 | #endif | |
3361 | } | |
3362 | ||
7e89c3a3 RK |
3363 | if (optimize >= 3) |
3364 | { | |
3365 | flag_inline_functions = 1; | |
3366 | } | |
3367 | ||
4291d9c8 RS |
3368 | #ifdef OPTIMIZATION_OPTIONS |
3369 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
3370 | OPTIMIZATION_OPTIONS (optimize); | |
3371 | #endif | |
3372 | ||
3373 | /* Initialize register usage now so switches may override. */ | |
3374 | init_reg_sets (); | |
3375 | ||
3376 | target_flags = 0; | |
3377 | set_target_switch (""); | |
3378 | ||
3379 | for (i = 1; i < argc; i++) | |
3380 | { | |
b99933c7 RS |
3381 | int j; |
3382 | /* If this is a language-specific option, | |
3383 | decode it in a language-specific way. */ | |
3384 | for (j = 0; lang_options[j] != 0; j++) | |
3385 | if (!strncmp (argv[i], lang_options[j], | |
3386 | strlen (lang_options[j]))) | |
3387 | break; | |
3388 | if (lang_options[j] != 0) | |
3389 | /* If the option is valid for *some* language, | |
3390 | treat it as valid even if this language doesn't understand it. */ | |
3391 | lang_decode_option (argv[i]); | |
3392 | else if (argv[i][0] == '-' && argv[i][1] != 0) | |
4291d9c8 RS |
3393 | { |
3394 | register char *str = argv[i] + 1; | |
3395 | if (str[0] == 'Y') | |
3396 | str++; | |
3397 | ||
3398 | if (str[0] == 'm') | |
3399 | set_target_switch (&str[1]); | |
3400 | else if (!strcmp (str, "dumpbase")) | |
3401 | { | |
3402 | dump_base_name = argv[++i]; | |
3403 | } | |
3404 | else if (str[0] == 'd') | |
3405 | { | |
3406 | register char *p = &str[1]; | |
3407 | while (*p) | |
3408 | switch (*p++) | |
3409 | { | |
3410 | case 'a': | |
3411 | combine_dump = 1; | |
3412 | dbr_sched_dump = 1; | |
3413 | flow_dump = 1; | |
3414 | global_reg_dump = 1; | |
3415 | jump_opt_dump = 1; | |
3416 | jump2_opt_dump = 1; | |
3417 | local_reg_dump = 1; | |
3418 | loop_dump = 1; | |
3419 | rtl_dump = 1; | |
3420 | cse_dump = 1, cse2_dump = 1; | |
3421 | sched_dump = 1; | |
3422 | sched2_dump = 1; | |
3423 | stack_reg_dump = 1; | |
3424 | break; | |
3425 | case 'k': | |
3426 | stack_reg_dump = 1; | |
3427 | break; | |
3428 | case 'c': | |
3429 | combine_dump = 1; | |
3430 | break; | |
3431 | case 'd': | |
3432 | dbr_sched_dump = 1; | |
3433 | break; | |
3434 | case 'f': | |
3435 | flow_dump = 1; | |
3436 | break; | |
3437 | case 'g': | |
3438 | global_reg_dump = 1; | |
3439 | break; | |
3440 | case 'j': | |
3441 | jump_opt_dump = 1; | |
3442 | break; | |
3443 | case 'J': | |
3444 | jump2_opt_dump = 1; | |
3445 | break; | |
3446 | case 'l': | |
3447 | local_reg_dump = 1; | |
3448 | break; | |
3449 | case 'L': | |
3450 | loop_dump = 1; | |
3451 | break; | |
3452 | case 'm': | |
3453 | flag_print_mem = 1; | |
3454 | break; | |
3455 | case 'p': | |
3456 | flag_print_asm_name = 1; | |
3457 | break; | |
3458 | case 'r': | |
3459 | rtl_dump = 1; | |
3460 | break; | |
3461 | case 's': | |
3462 | cse_dump = 1; | |
3463 | break; | |
3464 | case 't': | |
3465 | cse2_dump = 1; | |
3466 | break; | |
3467 | case 'S': | |
3468 | sched_dump = 1; | |
3469 | break; | |
3470 | case 'R': | |
3471 | sched2_dump = 1; | |
3472 | break; | |
3473 | case 'y': | |
3474 | set_yydebug (1); | |
3475 | break; | |
3476 | ||
3477 | case 'x': | |
3478 | rtl_dump_and_exit = 1; | |
3479 | break; | |
3480 | } | |
3481 | } | |
3482 | else if (str[0] == 'f') | |
3483 | { | |
4291d9c8 RS |
3484 | register char *p = &str[1]; |
3485 | int found = 0; | |
3486 | ||
3487 | /* Some kind of -f option. | |
3488 | P's value is the option sans `-f'. | |
3489 | Search for it in the table of options. */ | |
3490 | ||
3491 | for (j = 0; | |
3492 | !found && j < sizeof (f_options) / sizeof (f_options[0]); | |
3493 | j++) | |
3494 | { | |
3495 | if (!strcmp (p, f_options[j].string)) | |
3496 | { | |
3497 | *f_options[j].variable = f_options[j].on_value; | |
3498 | /* A goto here would be cleaner, | |
3499 | but breaks the vax pcc. */ | |
3500 | found = 1; | |
3501 | } | |
3502 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' | |
3503 | && ! strcmp (p+3, f_options[j].string)) | |
3504 | { | |
3505 | *f_options[j].variable = ! f_options[j].on_value; | |
3506 | found = 1; | |
3507 | } | |
3508 | } | |
3509 | ||
3510 | if (found) | |
3511 | ; | |
3512 | else if (!strncmp (p, "fixed-", 6)) | |
3513 | fix_register (&p[6], 1, 1); | |
3514 | else if (!strncmp (p, "call-used-", 10)) | |
3515 | fix_register (&p[10], 0, 1); | |
3516 | else if (!strncmp (p, "call-saved-", 11)) | |
3517 | fix_register (&p[11], 0, 0); | |
b99933c7 | 3518 | else |
4291d9c8 RS |
3519 | error ("Invalid option `%s'", argv[i]); |
3520 | } | |
3521 | else if (str[0] == 'O') | |
3522 | { | |
3523 | register char *p = str+1; | |
3524 | while (*p && *p >= '0' && *p <= '9') | |
3525 | p++; | |
3526 | if (*p == '\0') | |
3527 | ; | |
3528 | else | |
3529 | error ("Invalid option `%s'", argv[i]); | |
3530 | } | |
3531 | else if (!strcmp (str, "pedantic")) | |
3532 | pedantic = 1; | |
3533 | else if (!strcmp (str, "pedantic-errors")) | |
3534 | flag_pedantic_errors = pedantic = 1; | |
4291d9c8 RS |
3535 | else if (!strcmp (str, "quiet")) |
3536 | quiet_flag = 1; | |
3537 | else if (!strcmp (str, "version")) | |
3538 | version_flag = 1; | |
3539 | else if (!strcmp (str, "w")) | |
3540 | inhibit_warnings = 1; | |
3541 | else if (!strcmp (str, "W")) | |
3542 | { | |
3543 | extra_warnings = 1; | |
fa1a4543 RS |
3544 | /* We save the value of warn_uninitialized, since if they put |
3545 | -Wuninitialized on the command line, we need to generate a | |
3546 | warning about not using it without also specifying -O. */ | |
3547 | if (warn_uninitialized != 1) | |
3548 | warn_uninitialized = 2; | |
4291d9c8 RS |
3549 | } |
3550 | else if (str[0] == 'W') | |
3551 | { | |
4291d9c8 RS |
3552 | register char *p = &str[1]; |
3553 | int found = 0; | |
3554 | ||
3555 | /* Some kind of -W option. | |
3556 | P's value is the option sans `-W'. | |
3557 | Search for it in the table of options. */ | |
3558 | ||
3559 | for (j = 0; | |
3560 | !found && j < sizeof (W_options) / sizeof (W_options[0]); | |
3561 | j++) | |
3562 | { | |
3563 | if (!strcmp (p, W_options[j].string)) | |
3564 | { | |
3565 | *W_options[j].variable = W_options[j].on_value; | |
3566 | /* A goto here would be cleaner, | |
3567 | but breaks the vax pcc. */ | |
3568 | found = 1; | |
3569 | } | |
3570 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' | |
3571 | && ! strcmp (p+3, W_options[j].string)) | |
3572 | { | |
3573 | *W_options[j].variable = ! W_options[j].on_value; | |
3574 | found = 1; | |
3575 | } | |
3576 | } | |
3577 | ||
3578 | if (found) | |
3579 | ; | |
3580 | else if (!strncmp (p, "id-clash-", 9)) | |
3581 | { | |
3582 | char *endp = p + 9; | |
3583 | ||
3584 | while (*endp) | |
3585 | { | |
3586 | if (*endp >= '0' && *endp <= '9') | |
3587 | endp++; | |
3588 | else | |
7085b873 RS |
3589 | { |
3590 | error ("Invalid option `%s'", argv[i]); | |
3591 | goto id_clash_lose; | |
3592 | } | |
4291d9c8 RS |
3593 | } |
3594 | warn_id_clash = 1; | |
3595 | id_clash_len = atoi (str + 10); | |
7085b873 | 3596 | id_clash_lose: ; |
4291d9c8 | 3597 | } |
b51e9c62 RK |
3598 | else if (!strncmp (p, "larger-than-", 12)) |
3599 | { | |
3600 | char *endp = p + 12; | |
3601 | ||
3602 | while (*endp) | |
3603 | { | |
3604 | if (*endp >= '0' && *endp <= '9') | |
3605 | endp++; | |
3606 | else | |
3607 | { | |
3608 | error ("Invalid option `%s'", argv[i]); | |
3609 | goto larger_than_lose; | |
3610 | } | |
3611 | } | |
3612 | warn_larger_than = 1; | |
3613 | larger_than_size = atoi (str + 13); | |
3614 | larger_than_lose: ; | |
3615 | } | |
4291d9c8 RS |
3616 | else |
3617 | error ("Invalid option `%s'", argv[i]); | |
3618 | } | |
3619 | else if (!strcmp (str, "p")) | |
ca695ac9 JB |
3620 | { |
3621 | if (!output_bytecode) | |
3622 | profile_flag = 1; | |
3623 | else | |
3624 | error ("profiling not supported in bytecode compilation"); | |
3625 | } | |
4291d9c8 RS |
3626 | else if (!strcmp (str, "a")) |
3627 | { | |
3628 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
3629 | warning ("`-a' option (basic block profile) not supported"); | |
3630 | #else | |
3631 | profile_block_flag = 1; | |
3632 | #endif | |
3633 | } | |
3634 | else if (str[0] == 'g') | |
3635 | { | |
3636 | char *p = str + 1; | |
3637 | char *q; | |
3638 | unsigned len; | |
3639 | unsigned level; | |
3640 | ||
3641 | while (*p && (*p < '0' || *p > '9')) | |
3642 | p++; | |
3643 | len = p - str; | |
3644 | q = p; | |
3645 | while (*q && (*q >= '0' && *q <= '9')) | |
3646 | q++; | |
3647 | if (*p) | |
3648 | level = atoi (p); | |
3649 | else | |
3650 | level = 2; /* default debugging info level */ | |
3651 | if (*q || level > 3) | |
3652 | { | |
3653 | warning ("invalid debug level specification in option: `-%s'", | |
3654 | str); | |
3655 | warning ("no debugging information will be generated"); | |
3656 | level = 0; | |
3657 | } | |
3658 | ||
3659 | /* If more than one debugging type is supported, | |
3660 | you must define PREFERRED_DEBUGGING_TYPE | |
3661 | to choose a format in a system-dependent way. */ | |
4d7e336b RS |
3662 | /* This is one long line cause VAXC can't handle a \-newline. */ |
3663 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) | |
4291d9c8 RS |
3664 | #ifdef PREFERRED_DEBUGGING_TYPE |
3665 | if (!strncmp (str, "ggdb", len)) | |
3666 | write_symbols = PREFERRED_DEBUGGING_TYPE; | |
3667 | #else /* no PREFERRED_DEBUGGING_TYPE */ | |
3668 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! | |
3669 | #endif /* no PREFERRED_DEBUGGING_TYPE */ | |
3670 | #endif /* More than one debugger format enabled. */ | |
3671 | #ifdef DBX_DEBUGGING_INFO | |
3672 | if (write_symbols != NO_DEBUG) | |
3673 | ; | |
3674 | else if (!strncmp (str, "ggdb", len)) | |
3675 | write_symbols = DBX_DEBUG; | |
3676 | else if (!strncmp (str, "gstabs", len)) | |
3677 | write_symbols = DBX_DEBUG; | |
efa89fb3 RS |
3678 | else if (!strncmp (str, "gstabs+", len)) |
3679 | write_symbols = DBX_DEBUG; | |
4291d9c8 RS |
3680 | |
3681 | /* Always enable extensions for -ggdb or -gstabs+, | |
3682 | always disable for -gstabs. | |
3683 | For plain -g, use system-specific default. */ | |
3684 | if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len) | |
3685 | && len >= 2) | |
a53d0bcc | 3686 | use_gnu_debug_info_extensions = 1; |
166792f0 RS |
3687 | else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len) |
3688 | && len >= 7) | |
a53d0bcc | 3689 | use_gnu_debug_info_extensions = 1; |
4291d9c8 RS |
3690 | else if (write_symbols == DBX_DEBUG |
3691 | && !strncmp (str, "gstabs", len) && len >= 2) | |
a53d0bcc | 3692 | use_gnu_debug_info_extensions = 0; |
4291d9c8 | 3693 | else |
a53d0bcc | 3694 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; |
4291d9c8 RS |
3695 | #endif /* DBX_DEBUGGING_INFO */ |
3696 | #ifdef DWARF_DEBUGGING_INFO | |
3697 | if (write_symbols != NO_DEBUG) | |
3698 | ; | |
a53d0bcc RS |
3699 | else if (!strncmp (str, "g", len)) |
3700 | write_symbols = DWARF_DEBUG; | |
4291d9c8 RS |
3701 | else if (!strncmp (str, "ggdb", len)) |
3702 | write_symbols = DWARF_DEBUG; | |
4291d9c8 RS |
3703 | else if (!strncmp (str, "gdwarf", len)) |
3704 | write_symbols = DWARF_DEBUG; | |
a53d0bcc RS |
3705 | |
3706 | /* Always enable extensions for -ggdb or -gdwarf+, | |
3707 | always disable for -gdwarf. | |
3708 | For plain -g, use system-specific default. */ | |
3709 | if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len) | |
3710 | && len >= 2) | |
3711 | use_gnu_debug_info_extensions = 1; | |
3712 | else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+")) | |
3713 | use_gnu_debug_info_extensions = 1; | |
3714 | else if (write_symbols == DWARF_DEBUG | |
3715 | && !strncmp (str, "gdwarf", len) && len >= 2) | |
3716 | use_gnu_debug_info_extensions = 0; | |
3717 | else | |
3718 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; | |
4291d9c8 RS |
3719 | #endif |
3720 | #ifdef SDB_DEBUGGING_INFO | |
3721 | if (write_symbols != NO_DEBUG) | |
3722 | ; | |
a53d0bcc RS |
3723 | else if (!strncmp (str, "g", len)) |
3724 | write_symbols = SDB_DEBUG; | |
3725 | else if (!strncmp (str, "gdb", len)) | |
4291d9c8 RS |
3726 | write_symbols = SDB_DEBUG; |
3727 | else if (!strncmp (str, "gcoff", len)) | |
3728 | write_symbols = SDB_DEBUG; | |
3729 | #endif /* SDB_DEBUGGING_INFO */ | |
f246a305 RS |
3730 | #ifdef XCOFF_DEBUGGING_INFO |
3731 | if (write_symbols != NO_DEBUG) | |
3732 | ; | |
a53d0bcc RS |
3733 | else if (!strncmp (str, "g", len)) |
3734 | write_symbols = XCOFF_DEBUG; | |
f246a305 RS |
3735 | else if (!strncmp (str, "ggdb", len)) |
3736 | write_symbols = XCOFF_DEBUG; | |
3737 | else if (!strncmp (str, "gxcoff", len)) | |
3738 | write_symbols = XCOFF_DEBUG; | |
3739 | ||
a53d0bcc | 3740 | /* Always enable extensions for -ggdb or -gxcoff+, |
f246a305 RS |
3741 | always disable for -gxcoff. |
3742 | For plain -g, use system-specific default. */ | |
3743 | if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len) | |
3744 | && len >= 2) | |
a53d0bcc RS |
3745 | use_gnu_debug_info_extensions = 1; |
3746 | else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+")) | |
3747 | use_gnu_debug_info_extensions = 1; | |
a56addeb | 3748 | else if (write_symbols == XCOFF_DEBUG |
f246a305 | 3749 | && !strncmp (str, "gxcoff", len) && len >= 2) |
a53d0bcc | 3750 | use_gnu_debug_info_extensions = 0; |
f246a305 | 3751 | else |
a53d0bcc | 3752 | use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS; |
f246a305 | 3753 | #endif |
4291d9c8 RS |
3754 | if (write_symbols == NO_DEBUG) |
3755 | warning ("`-%s' option not supported on this version of GCC", str); | |
3756 | else if (level == 0) | |
3757 | write_symbols = NO_DEBUG; | |
3758 | else | |
d68c507d | 3759 | debug_info_level = (enum debug_info_level) level; |
4291d9c8 RS |
3760 | } |
3761 | else if (!strcmp (str, "o")) | |
3762 | { | |
3763 | asm_file_name = argv[++i]; | |
3764 | } | |
3765 | else if (str[0] == 'G') | |
3766 | { | |
3767 | g_switch_set = TRUE; | |
3768 | g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]); | |
3769 | } | |
f246a305 RS |
3770 | else if (!strncmp (str, "aux-info", 8)) |
3771 | { | |
3772 | flag_gen_aux_info = 1; | |
3773 | aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]); | |
3774 | } | |
4291d9c8 RS |
3775 | else |
3776 | error ("Invalid option `%s'", argv[i]); | |
3777 | } | |
3778 | else if (argv[i][0] == '+') | |
b99933c7 | 3779 | error ("Invalid option `%s'", argv[i]); |
4291d9c8 RS |
3780 | else |
3781 | filename = argv[i]; | |
3782 | } | |
3783 | ||
ca695ac9 JB |
3784 | /* Initialize for bytecode output. A good idea to do this as soon as |
3785 | possible after the "-f" options have been parsed. */ | |
3786 | if (output_bytecode) | |
3787 | { | |
3788 | #ifndef TARGET_SUPPORTS_BYTECODE | |
3789 | /* Just die with a fatal error if not supported */ | |
0207ea82 | 3790 | fatal ("-fbytecode not supporter for this target"); |
ca695ac9 JB |
3791 | #else |
3792 | bc_initialize (); | |
3793 | #endif | |
3794 | } | |
3795 | ||
f246a305 RS |
3796 | if (optimize == 0) |
3797 | { | |
a2468e45 BK |
3798 | /* Inlining does not work if not optimizing, |
3799 | so force it not to be done. */ | |
f246a305 RS |
3800 | flag_no_inline = 1; |
3801 | warn_inline = 0; | |
a2468e45 BK |
3802 | |
3803 | /* The c_decode_option and lang_decode_option functions set | |
3804 | this to `2' if -Wall is used, so we can avoid giving out | |
3805 | lots of errors for people who don't realize what -Wall does. */ | |
3806 | if (warn_uninitialized == 1) | |
3807 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
3808 | } |
3809 | ||
7877bbb3 RS |
3810 | #if defined(DWARF_DEBUGGING_INFO) |
3811 | if (write_symbols == DWARF_DEBUG | |
3812 | && strcmp (language_string, "GNU C++") == 0) | |
3813 | { | |
2b5ddaab | 3814 | warning ("-g option not supported for C++ on SVR4 systems"); |
7877bbb3 RS |
3815 | write_symbols = NO_DEBUG; |
3816 | } | |
3817 | #endif /* defined(DWARF_DEBUGGING_INFO) */ | |
3818 | ||
4291d9c8 RS |
3819 | #ifdef OVERRIDE_OPTIONS |
3820 | /* Some machines may reject certain combinations of options. */ | |
3821 | OVERRIDE_OPTIONS; | |
3822 | #endif | |
3823 | ||
3824 | /* Unrolling all loops implies that standard loop unrolling must also | |
3825 | be done. */ | |
3826 | if (flag_unroll_all_loops) | |
3827 | flag_unroll_loops = 1; | |
3828 | /* Loop unrolling requires that strength_reduction be on also. Silently | |
3829 | turn on strength reduction here if it isn't already on. Also, the loop | |
3830 | unrolling code assumes that cse will be run after loop, so that must | |
3831 | be turned on also. */ | |
3832 | if (flag_unroll_loops) | |
3833 | { | |
3834 | flag_strength_reduce = 1; | |
3835 | flag_rerun_cse_after_loop = 1; | |
3836 | } | |
3837 | ||
3838 | /* Warn about options that are not supported on this machine. */ | |
3839 | #ifndef INSN_SCHEDULING | |
3840 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
3841 | warning ("instruction scheduling not supported on this target machine"); | |
3842 | #endif | |
3843 | #ifndef DELAY_SLOTS | |
3844 | if (flag_delayed_branch) | |
3845 | warning ("this target machine does not have delayed branches"); | |
3846 | #endif | |
3847 | ||
3848 | /* If we are in verbose mode, write out the version and maybe all the | |
3849 | option flags in use. */ | |
3850 | if (version_flag) | |
3851 | { | |
3852 | fprintf (stderr, "%s version %s", language_string, version_string); | |
3853 | #ifdef TARGET_VERSION | |
3854 | TARGET_VERSION; | |
3855 | #endif | |
3856 | #ifdef __GNUC__ | |
3857 | #ifndef __VERSION__ | |
3858 | #define __VERSION__ "[unknown]" | |
3859 | #endif | |
3860 | fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__); | |
3861 | #else | |
3862 | fprintf (stderr, " compiled by CC.\n"); | |
3863 | #endif | |
3864 | if (! quiet_flag) | |
3865 | print_switch_values (); | |
3866 | } | |
3867 | ||
4291d9c8 RS |
3868 | compile_file (filename); |
3869 | ||
a56addeb | 3870 | #ifndef OS2 |
4291d9c8 RS |
3871 | #ifndef VMS |
3872 | if (flag_print_mem) | |
3873 | { | |
3874 | char *lim = (char *) sbrk (0); | |
3875 | ||
3876 | fprintf (stderr, "Data size %d.\n", | |
b61b1c91 | 3877 | lim - (char *) &environ); |
4291d9c8 RS |
3878 | fflush (stderr); |
3879 | ||
3880 | #ifdef USG | |
3881 | system ("ps -l 1>&2"); | |
3882 | #else /* not USG */ | |
3883 | system ("ps v"); | |
3884 | #endif /* not USG */ | |
3885 | } | |
3886 | #endif /* not VMS */ | |
a56addeb | 3887 | #endif /* not OS2 */ |
4291d9c8 RS |
3888 | |
3889 | if (errorcount) | |
3890 | exit (FATAL_EXIT_CODE); | |
3891 | if (sorrycount) | |
3892 | exit (FATAL_EXIT_CODE); | |
3893 | exit (SUCCESS_EXIT_CODE); | |
3894 | return 34; | |
3895 | } | |
3896 | \f | |
3897 | /* Decode -m switches. */ | |
3898 | ||
3899 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
3900 | and which bits in `target_switches' it should set or clear. | |
3901 | If VALUE is positive, it is bits to set. | |
3902 | If VALUE is negative, -VALUE is bits to clear. | |
3903 | (The sign bit is not used so there is no confusion.) */ | |
3904 | ||
3905 | struct {char *name; int value;} target_switches [] | |
3906 | = TARGET_SWITCHES; | |
3907 | ||
3908 | /* This table is similar, but allows the switch to have a value. */ | |
3909 | ||
3910 | #ifdef TARGET_OPTIONS | |
3911 | struct {char *prefix; char ** variable;} target_options [] | |
3912 | = TARGET_OPTIONS; | |
3913 | #endif | |
3914 | ||
3915 | /* Decode the switch -mNAME. */ | |
3916 | ||
3917 | void | |
3918 | set_target_switch (name) | |
3919 | char *name; | |
3920 | { | |
3921 | register int j; | |
3922 | int valid = 0; | |
3923 | ||
3924 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
3925 | if (!strcmp (target_switches[j].name, name)) | |
3926 | { | |
3927 | if (target_switches[j].value < 0) | |
3928 | target_flags &= ~-target_switches[j].value; | |
3929 | else | |
3930 | target_flags |= target_switches[j].value; | |
3931 | valid = 1; | |
3932 | } | |
3933 | ||
3934 | #ifdef TARGET_OPTIONS | |
3935 | if (!valid) | |
3936 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) | |
3937 | { | |
3938 | int len = strlen (target_options[j].prefix); | |
3939 | if (!strncmp (target_options[j].prefix, name, len)) | |
3940 | { | |
3941 | *target_options[j].variable = name + len; | |
3942 | valid = 1; | |
3943 | } | |
3944 | } | |
3945 | #endif | |
3946 | ||
3947 | if (!valid) | |
3948 | error ("Invalid option `%s'", name); | |
3949 | } | |
3950 | \f | |
3951 | /* Variable used for communication between the following two routines. */ | |
3952 | ||
3953 | static int line_position; | |
3954 | ||
3955 | /* Print an option value and adjust the position in the line. */ | |
3956 | ||
3957 | static void | |
3958 | print_single_switch (type, name) | |
3959 | char *type, *name; | |
3960 | { | |
3961 | fprintf (stderr, " %s%s", type, name); | |
3962 | ||
3963 | line_position += strlen (type) + strlen (name) + 1; | |
3964 | ||
3965 | if (line_position > 65) | |
3966 | { | |
3967 | fprintf (stderr, "\n\t"); | |
3968 | line_position = 8; | |
3969 | } | |
3970 | } | |
3971 | ||
3972 | /* Print default target switches for -version. */ | |
3973 | ||
3974 | static void | |
3975 | print_switch_values () | |
3976 | { | |
3977 | register int j; | |
3978 | ||
3979 | fprintf (stderr, "enabled:"); | |
3980 | line_position = 8; | |
3981 | ||
3982 | for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++) | |
3983 | if (*f_options[j].variable == f_options[j].on_value) | |
3984 | print_single_switch ("-f", f_options[j].string); | |
3985 | ||
3986 | for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++) | |
3987 | if (*W_options[j].variable == W_options[j].on_value) | |
3988 | print_single_switch ("-W", W_options[j].string); | |
3989 | ||
3990 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
3991 | if (target_switches[j].name[0] != '\0' | |
3992 | && target_switches[j].value > 0 | |
3993 | && ((target_switches[j].value & target_flags) | |
3994 | == target_switches[j].value)) | |
3995 | print_single_switch ("-m", target_switches[j].name); | |
3996 | ||
3997 | fprintf (stderr, "\n"); | |
3998 | } |