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4291d9c8 | 1 | /* Top level of GNU C compiler |
1808578b | 2 | Copyright (C) 1987, 88, 89, 92-98, 1999, 2000 Free Software Foundation, Inc. |
4291d9c8 RS |
3 | |
4 | This file is part of GNU CC. | |
5 | ||
6 | GNU CC is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU CC is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
4291d9c8 | 20 | |
4291d9c8 RS |
21 | /* This is the top level of cc1/c++. |
22 | It parses command args, opens files, invokes the various passes | |
23 | in the proper order, and counts the time used by each. | |
24 | Error messages and low-level interface to malloc also handled here. */ | |
25 | ||
26 | #include "config.h" | |
670ee920 KG |
27 | #undef FLOAT /* This is for hpux. They should change hpux. */ |
28 | #undef FFS /* Some systems define this in param.h. */ | |
29 | #include "system.h" | |
4291d9c8 RS |
30 | #include <signal.h> |
31 | #include <setjmp.h> | |
956d6950 JL |
32 | |
33 | #ifdef HAVE_SYS_RESOURCE_H | |
34 | # include <sys/resource.h> | |
35 | #endif | |
36 | ||
37 | #ifdef HAVE_SYS_TIMES_H | |
38 | # include <sys/times.h> | |
eb910b5a | 39 | #endif |
4291d9c8 RS |
40 | |
41 | #include "input.h" | |
42 | #include "tree.h" | |
4291d9c8 | 43 | #include "rtl.h" |
6baf1cc8 | 44 | #include "tm_p.h" |
4291d9c8 RS |
45 | #include "flags.h" |
46 | #include "insn-attr.h" | |
e5e809f4 JL |
47 | #include "insn-codes.h" |
48 | #include "insn-config.h" | |
49 | #include "recog.h" | |
d0d4af87 | 50 | #include "defaults.h" |
e14417fa | 51 | #include "output.h" |
3d195391 | 52 | #include "except.h" |
49ad7cfa | 53 | #include "function.h" |
a0c8e1b2 | 54 | #include "toplev.h" |
114791ea | 55 | #include "expr.h" |
b1eeb243 | 56 | #include "basic-block.h" |
ab87f8c8 | 57 | #include "intl.h" |
0a25f1f5 | 58 | #include "ggc.h" |
6a2cc2ac | 59 | #include "graph.h" |
272df862 | 60 | #include "loop.h" |
f246a305 | 61 | |
76ead72b RL |
62 | #ifdef DWARF_DEBUGGING_INFO |
63 | #include "dwarfout.h" | |
64 | #endif | |
65 | ||
66 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
67 | #include "dwarf2out.h" | |
68 | #endif | |
69 | ||
4f70758f | 70 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
71 | #include "dbxout.h" |
72 | #endif | |
73 | ||
74 | #ifdef SDB_DEBUGGING_INFO | |
75 | #include "sdbout.h" | |
76 | #endif | |
77 | ||
f246a305 RS |
78 | #ifdef XCOFF_DEBUGGING_INFO |
79 | #include "xcoffout.h" | |
80 | #endif | |
4291d9c8 RS |
81 | \f |
82 | #ifdef VMS | |
83 | /* The extra parameters substantially improve the I/O performance. */ | |
84 | static FILE * | |
37c9f674 | 85 | vms_fopen (fname, type) |
4291d9c8 RS |
86 | char * fname; |
87 | char * type; | |
88 | { | |
37c9f674 RK |
89 | /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two |
90 | fixed arguments, which matches ANSI's specification but not VAXCRTL's | |
91 | pre-ANSI implementation. This hack circumvents the mismatch problem. */ | |
92 | FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen; | |
93 | ||
94 | if (*type == 'w') | |
95 | return (*vmslib_fopen) (fname, type, "mbc=32", | |
96 | "deq=64", "fop=tef", "shr=nil"); | |
97 | else | |
98 | return (*vmslib_fopen) (fname, type, "mbc=32"); | |
4291d9c8 | 99 | } |
37c9f674 RK |
100 | #define fopen vms_fopen |
101 | #endif /* VMS */ | |
4291d9c8 RS |
102 | |
103 | #ifndef DEFAULT_GDB_EXTENSIONS | |
104 | #define DEFAULT_GDB_EXTENSIONS 1 | |
105 | #endif | |
106 | ||
30657ee3 RK |
107 | /* If more than one debugging type is supported, you must define |
108 | PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way. | |
109 | ||
110 | This is one long line cause VAXC can't handle a \-newline. */ | |
9a666dda | 111 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) |
30657ee3 RK |
112 | #ifndef PREFERRED_DEBUGGING_TYPE |
113 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! | |
114 | #endif /* no PREFERRED_DEBUGGING_TYPE */ | |
115 | #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE | |
116 | so the following code needn't care. */ | |
117 | #ifdef DBX_DEBUGGING_INFO | |
118 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
119 | #endif | |
120 | #ifdef SDB_DEBUGGING_INFO | |
121 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG | |
122 | #endif | |
123 | #ifdef DWARF_DEBUGGING_INFO | |
124 | #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG | |
125 | #endif | |
9a666dda JM |
126 | #ifdef DWARF2_DEBUGGING_INFO |
127 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
128 | #endif | |
30657ee3 RK |
129 | #ifdef XCOFF_DEBUGGING_INFO |
130 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG | |
131 | #endif | |
132 | #endif /* More than one debugger format enabled. */ | |
133 | ||
134 | /* If still not defined, must have been because no debugging formats | |
135 | are supported. */ | |
136 | #ifndef PREFERRED_DEBUGGING_TYPE | |
137 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG | |
138 | #endif | |
139 | ||
2a611d21 ZW |
140 | #ifndef DIR_SEPARATOR |
141 | #define DIR_SEPARATOR '/' | |
142 | #endif | |
143 | ||
72c8bb7f | 144 | #if ! (defined (VMS) || defined (OS2)) |
4291d9c8 | 145 | extern char **environ; |
4d7e336b | 146 | #endif |
f425a887 | 147 | extern char *version_string; |
4291d9c8 | 148 | |
b0316e35 RS |
149 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
150 | to ASM_FINISH_DECLARE_OBJECT. */ | |
151 | ||
152 | extern int size_directive_output; | |
5e10b3cc | 153 | extern tree last_assemble_variable_decl; |
b0316e35 | 154 | |
87e11268 | 155 | static void set_target_switch PROTO((const char *)); |
5f8ded66 | 156 | static const char *decl_name PROTO((tree, int)); |
6ed551b4 | 157 | |
7adfcfed | 158 | extern void set_fatal_function PROTO((void (*)(const char *, va_list))); |
bf94d1ec KG |
159 | static void float_signal PROTO((int)) ATTRIBUTE_NORETURN; |
160 | static void pipe_closed PROTO((int)) ATTRIBUTE_NORETURN; | |
444bf316 | 161 | #ifdef ASM_IDENTIFY_LANGUAGE |
47c3ed98 KG |
162 | /* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */ |
163 | static void output_lang_identify PROTO((FILE *)) ATTRIBUTE_UNUSED; | |
444bf316 | 164 | #endif |
87e11268 | 165 | static void open_dump_file PROTO((const char *, const char *)); |
0e05e8ea | 166 | static void close_dump_file PROTO((void (*) (FILE *, rtx), rtx)); |
87e11268 KG |
167 | static void dump_rtl PROTO((const char *, tree, void (*) (FILE *, rtx), rtx)); |
168 | static void clean_dump_file PROTO((const char *)); | |
0e05e8ea | 169 | static void compile_file PROTO((char *)); |
b8468bc7 | 170 | static void display_help PROTO ((void)); |
7adfcfed | 171 | static void mark_file_stack PROTO ((void *)); |
4291d9c8 | 172 | |
39dd8003 NC |
173 | static void decode_d_option PROTO ((const char *)); |
174 | static int decode_f_option PROTO ((const char *)); | |
175 | static int decode_W_option PROTO ((const char *)); | |
176 | static int decode_g_option PROTO ((const char *)); | |
177 | static unsigned independent_decode_option PROTO ((int, char **, unsigned)); | |
178 | ||
87e11268 KG |
179 | static void print_version PROTO((FILE *, const char *)); |
180 | static int print_single_switch PROTO((FILE *, int, int, const char *, | |
181 | const char *, const char *, | |
182 | const char *, const char *)); | |
183 | static void print_switch_values PROTO((FILE *, int, int, const char *, | |
184 | const char *, const char *)); | |
735a0e33 | 185 | |
3d5cdd42 DE |
186 | /* Length of line when printing switch values. */ |
187 | #define MAX_LINE 75 | |
188 | ||
4291d9c8 RS |
189 | /* Name of program invoked, sans directories. */ |
190 | ||
7adfcfed | 191 | const char *progname; |
4291d9c8 RS |
192 | |
193 | /* Copy of arguments to main. */ | |
194 | int save_argc; | |
195 | char **save_argv; | |
196 | \f | |
197 | /* Name of current original source file (what was input to cpp). | |
198 | This comes from each #-command in the actual input. */ | |
199 | ||
200 | char *input_filename; | |
201 | ||
202 | /* Name of top-level original source file (what was input to cpp). | |
203 | This comes from the #-command at the beginning of the actual input. | |
204 | If there isn't any there, then this is the cc1 input file name. */ | |
205 | ||
206 | char *main_input_filename; | |
207 | ||
4291d9c8 RS |
208 | /* Current line number in real source file. */ |
209 | ||
210 | int lineno; | |
211 | ||
f1db3576 JL |
212 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
213 | int no_new_pseudos; | |
214 | ||
4291d9c8 RS |
215 | /* Stack of currently pending input files. */ |
216 | ||
217 | struct file_stack *input_file_stack; | |
218 | ||
219 | /* Incremented on each change to input_file_stack. */ | |
220 | int input_file_stack_tick; | |
221 | ||
4291d9c8 RS |
222 | /* Name to use as base of names for dump output files. */ |
223 | ||
87e11268 | 224 | const char *dump_base_name; |
4291d9c8 RS |
225 | |
226 | /* Bit flags that specify the machine subtype we are compiling for. | |
227 | Bits are tested using macros TARGET_... defined in the tm.h file | |
228 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
229 | ||
230 | extern int target_flags; | |
231 | ||
232 | /* Flags saying which kinds of debugging dump have been requested. */ | |
233 | ||
234 | int rtl_dump = 0; | |
235 | int rtl_dump_and_exit = 0; | |
236 | int jump_opt_dump = 0; | |
e9a25f70 | 237 | int addressof_dump = 0; |
4291d9c8 | 238 | int cse_dump = 0; |
7506f491 | 239 | int gcse_dump = 0; |
4291d9c8 RS |
240 | int loop_dump = 0; |
241 | int cse2_dump = 0; | |
0d332add | 242 | int branch_prob_dump = 0; |
4291d9c8 RS |
243 | int flow_dump = 0; |
244 | int combine_dump = 0; | |
8c660648 | 245 | int regmove_dump = 0; |
4291d9c8 RS |
246 | int sched_dump = 0; |
247 | int local_reg_dump = 0; | |
248 | int global_reg_dump = 0; | |
e881bb1b | 249 | int flow2_dump = 0; |
ede7cd44 | 250 | int peephole2_dump = 0; |
4291d9c8 RS |
251 | int sched2_dump = 0; |
252 | int jump2_opt_dump = 0; | |
bd334356 | 253 | #ifdef DELAY_SLOTS |
4291d9c8 | 254 | int dbr_sched_dump = 0; |
bd334356 | 255 | #endif |
4291d9c8 | 256 | int flag_print_asm_name = 0; |
032713aa | 257 | #ifdef STACK_REGS |
4291d9c8 | 258 | int stack_reg_dump = 0; |
032713aa NC |
259 | #endif |
260 | #ifdef MACHINE_DEPENDENT_REORG | |
261 | int mach_dep_reorg_dump = 0; | |
262 | #endif | |
39dd8003 NC |
263 | static int flag_print_mem = 0; |
264 | static int version_flag = 0; | |
265 | static char * filename = 0; | |
735a0e33 | 266 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
267 | |
268 | /* Name for output file of assembly code, specified with -o. */ | |
269 | ||
270 | char *asm_file_name; | |
271 | ||
272 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
273 | int g_switch_value; | |
274 | int g_switch_set; | |
275 | ||
276 | /* Type(s) of debugging information we are producing (if any). | |
277 | See flags.h for the definitions of the different possible | |
278 | types of debugging information. */ | |
279 | enum debug_info_type write_symbols = NO_DEBUG; | |
280 | ||
281 | /* Level of debugging information we are producing. See flags.h | |
282 | for the definitions of the different possible levels. */ | |
283 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
284 | ||
a53d0bcc RS |
285 | /* Nonzero means use GNU-only extensions in the generated symbolic |
286 | debugging information. */ | |
287 | /* Currently, this only has an effect when write_symbols is set to | |
288 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
289 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
290 | |
291 | /* Nonzero means do optimizations. -O. | |
292 | Particular numeric values stand for particular amounts of optimization; | |
293 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
294 | ones are not controlled directly by this variable. Instead, they are | |
295 | controlled by individual `flag_...' variables that are defaulted | |
296 | based on this variable. */ | |
297 | ||
298 | int optimize = 0; | |
299 | ||
c6aded7c AG |
300 | /* Nonzero means optimize for size. -Os. |
301 | The only valid values are zero and non-zero. When optimize_size is | |
302 | non-zero, optimize defaults to 2, but certain individual code | |
303 | bloating optimizations are disabled. */ | |
304 | ||
305 | int optimize_size = 0; | |
306 | ||
4291d9c8 RS |
307 | /* Number of error messages and warning messages so far. */ |
308 | ||
309 | int errorcount = 0; | |
310 | int warningcount = 0; | |
311 | int sorrycount = 0; | |
312 | ||
a1d7ffe3 JM |
313 | /* Pointer to function to compute the name to use to print a declaration. |
314 | DECL is the declaration in question. | |
315 | VERBOSITY determines what information will be printed: | |
316 | 0: DECL_NAME, demangled as necessary. | |
317 | 1: and scope information. | |
318 | 2: and any other information that might be interesting, such as function | |
319 | parameter types in C++. */ | |
4291d9c8 | 320 | |
5f8ded66 | 321 | const char *(*decl_printable_name) PROTO ((tree, int)); |
4291d9c8 RS |
322 | |
323 | /* Pointer to function to compute rtl for a language-specific tree code. */ | |
324 | ||
114791ea KG |
325 | typedef rtx (*lang_expand_expr_t) |
326 | PROTO ((union tree_node *, rtx, enum machine_mode, | |
327 | enum expand_modifier modifier)); | |
328 | ||
329 | lang_expand_expr_t lang_expand_expr = 0; | |
4291d9c8 | 330 | |
e697e20a MM |
331 | tree (*lang_expand_constant) PROTO((tree)) = 0; |
332 | ||
2b599527 RS |
333 | /* Pointer to function to finish handling an incomplete decl at the |
334 | end of compilation. */ | |
335 | ||
114791ea | 336 | void (*incomplete_decl_finalize_hook) PROTO((tree)) = 0; |
2b599527 | 337 | |
4291d9c8 RS |
338 | /* Nonzero if generating code to do profiling. */ |
339 | ||
340 | int profile_flag = 0; | |
341 | ||
342 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ | |
343 | ||
344 | int profile_block_flag; | |
345 | ||
0d332add DE |
346 | /* Nonzero if generating code to profile program flow graph arcs. */ |
347 | ||
348 | int profile_arc_flag = 0; | |
349 | ||
350 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
351 | ||
352 | int flag_test_coverage = 0; | |
353 | ||
354 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
355 | ||
356 | int flag_branch_probabilities = 0; | |
357 | ||
4291d9c8 RS |
358 | /* Nonzero for -pedantic switch: warn about anything |
359 | that standard spec forbids. */ | |
360 | ||
361 | int pedantic = 0; | |
362 | ||
363 | /* Temporarily suppress certain warnings. | |
364 | This is set while reading code from a system header file. */ | |
365 | ||
366 | int in_system_header = 0; | |
367 | ||
368 | /* Nonzero means do stupid register allocation. | |
369 | Currently, this is 1 if `optimize' is 0. */ | |
370 | ||
371 | int obey_regdecls = 0; | |
372 | ||
373 | /* Don't print functions as they are compiled and don't print | |
374 | times taken by the various passes. -quiet. */ | |
375 | ||
376 | int quiet_flag = 0; | |
377 | \f | |
378 | /* -f flags. */ | |
379 | ||
380 | /* Nonzero means `char' should be signed. */ | |
381 | ||
382 | int flag_signed_char; | |
383 | ||
384 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
385 | ||
386 | int flag_short_enums; | |
387 | ||
388 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
389 | be saved across function calls, if that produces overall better code. | |
390 | Optional now, so people can test it. */ | |
391 | ||
392 | #ifdef DEFAULT_CALLER_SAVES | |
393 | int flag_caller_saves = 1; | |
394 | #else | |
395 | int flag_caller_saves = 0; | |
396 | #endif | |
397 | ||
958ec8ca JW |
398 | /* Nonzero if structures and unions should be returned in memory. |
399 | ||
400 | This should only be defined if compatibility with another compiler or | |
401 | with an ABI is needed, because it results in slower code. */ | |
402 | ||
403 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
404 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
405 | #endif | |
406 | ||
4291d9c8 RS |
407 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
408 | ||
958ec8ca | 409 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
410 | |
411 | /* Nonzero for -fforce-mem: load memory value into a register | |
412 | before arithmetic on it. This makes better cse but slower compilation. */ | |
413 | ||
414 | int flag_force_mem = 0; | |
415 | ||
416 | /* Nonzero for -fforce-addr: load memory address into a register before | |
417 | reference to memory. This makes better cse but slower compilation. */ | |
418 | ||
419 | int flag_force_addr = 0; | |
420 | ||
421 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
422 | instead save them up to pop many calls' args with one insns. */ | |
423 | ||
6731a3e3 | 424 | int flag_defer_pop = 0; |
4291d9c8 RS |
425 | |
426 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
427 | in extended-precision registers. */ | |
428 | ||
429 | int flag_float_store = 0; | |
430 | ||
431 | /* Nonzero for -fcse-follow-jumps: | |
432 | have cse follow jumps to do a more extensive job. */ | |
433 | ||
434 | int flag_cse_follow_jumps; | |
435 | ||
8b3686ed RK |
436 | /* Nonzero for -fcse-skip-blocks: |
437 | have cse follow a branch around a block. */ | |
438 | int flag_cse_skip_blocks; | |
439 | ||
4291d9c8 RS |
440 | /* Nonzero for -fexpensive-optimizations: |
441 | perform miscellaneous relatively-expensive optimizations. */ | |
442 | int flag_expensive_optimizations; | |
443 | ||
444 | /* Nonzero for -fthread-jumps: | |
445 | have jump optimize output of loop. */ | |
446 | ||
447 | int flag_thread_jumps; | |
448 | ||
449 | /* Nonzero enables strength-reduction in loop.c. */ | |
450 | ||
451 | int flag_strength_reduce = 0; | |
452 | ||
453 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
454 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
455 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
456 | unrolled. */ | |
457 | ||
458 | int flag_unroll_loops; | |
459 | ||
460 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
461 | This is generally not a win. */ | |
462 | ||
463 | int flag_unroll_all_loops; | |
464 | ||
e5eb27e5 JL |
465 | /* Nonzero forces all invariant computations in loops to be moved |
466 | outside the loop. */ | |
467 | ||
468 | int flag_move_all_movables = 0; | |
469 | ||
470 | /* Nonzero forces all general induction variables in loops to be | |
471 | strength reduced. */ | |
472 | ||
473 | int flag_reduce_all_givs = 0; | |
474 | ||
9ec36da5 JL |
475 | /* Nonzero to perform full register move optimization passes. This is the |
476 | default for -O2. */ | |
477 | ||
478 | int flag_regmove = 0; | |
479 | ||
4291d9c8 RS |
480 | /* Nonzero for -fwritable-strings: |
481 | store string constants in data segment and don't uniquize them. */ | |
482 | ||
483 | int flag_writable_strings = 0; | |
484 | ||
485 | /* Nonzero means don't put addresses of constant functions in registers. | |
486 | Used for compiling the Unix kernel, where strange substitutions are | |
487 | done on the assembly output. */ | |
488 | ||
489 | int flag_no_function_cse = 0; | |
490 | ||
491 | /* Nonzero for -fomit-frame-pointer: | |
492 | don't make a frame pointer in simple functions that don't require one. */ | |
493 | ||
494 | int flag_omit_frame_pointer = 0; | |
495 | ||
cf440348 JL |
496 | /* Nonzero means place each function into its own section on those platforms |
497 | which support arbitrary section names and unlimited numbers of sections. */ | |
498 | ||
499 | int flag_function_sections = 0; | |
500 | ||
fd868572 CM |
501 | /* ... and similar for data. */ |
502 | ||
503 | int flag_data_sections = 0; | |
504 | ||
4291d9c8 RS |
505 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
506 | ||
507 | int flag_no_peephole = 0; | |
508 | ||
43855b28 JL |
509 | /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math |
510 | operations in the interest of optimization. For example it allows | |
511 | GCC to assume arguments to sqrt are nonnegative numbers, allowing | |
0f41302f | 512 | faster code for sqrt to be generated. */ |
43855b28 JL |
513 | |
514 | int flag_fast_math = 0; | |
515 | ||
41af162c CB |
516 | /* Nonzero means the front end generally wants `errno' maintained by math |
517 | operations, like built-in SQRT, unless overridden by flag_fast_math. */ | |
518 | ||
519 | int flag_errno_math = 1; | |
520 | ||
c64f913e CB |
521 | /* 0 means straightforward implementation of complex divide acceptable. |
522 | 1 means wide ranges of inputs must work for complex divide. | |
523 | 2 means C9X-like requirements for complex divide (not yet implemented). */ | |
524 | ||
525 | int flag_complex_divide_method = 0; | |
526 | ||
4291d9c8 RS |
527 | /* Nonzero means all references through pointers are volatile. */ |
528 | ||
529 | int flag_volatile; | |
c6e75897 | 530 | |
ab87f8c8 | 531 | /* Nonzero means treat all global and extern variables as volatile. */ |
c6e75897 | 532 | |
38d4d0c2 | 533 | int flag_volatile_global; |
4291d9c8 | 534 | |
ab87f8c8 JL |
535 | /* Nonzero means treat all static variables as volatile. */ |
536 | ||
537 | int flag_volatile_static; | |
538 | ||
4291d9c8 RS |
539 | /* Nonzero means just do syntax checking; don't output anything. */ |
540 | ||
541 | int flag_syntax_only = 0; | |
542 | ||
7506f491 DE |
543 | /* Nonzero means perform global cse. */ |
544 | ||
545 | static int flag_gcse; | |
546 | ||
b6d24183 JL |
547 | /* Nonzero means to use global dataflow analysis to eliminate |
548 | useless null pointer tests. */ | |
549 | ||
550 | static int flag_delete_null_pointer_checks; | |
551 | ||
4291d9c8 RS |
552 | /* Nonzero means to rerun cse after loop optimization. This increases |
553 | compilation time about 20% and picks up a few more common expressions. */ | |
554 | ||
555 | static int flag_rerun_cse_after_loop; | |
556 | ||
6d6d0fa0 JL |
557 | /* Nonzero means to run loop optimizations twice. */ |
558 | ||
64fde701 | 559 | int flag_rerun_loop_opt; |
6d6d0fa0 | 560 | |
4291d9c8 RS |
561 | /* Nonzero for -finline-functions: ok to inline functions that look like |
562 | good inline candidates. */ | |
563 | ||
564 | int flag_inline_functions; | |
565 | ||
566 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 567 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
568 | purposes. */ |
569 | ||
570 | int flag_keep_inline_functions; | |
571 | ||
fadb3bc9 | 572 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 RS |
573 | |
574 | int flag_no_inline; | |
575 | ||
fbe912dd BK |
576 | /* Nonzero means that we should emit static const variables |
577 | regardless of whether or not optimization is turned on. */ | |
578 | ||
579 | int flag_keep_static_consts = 1; | |
580 | ||
4291d9c8 RS |
581 | /* Nonzero means we should be saving declaration info into a .X file. */ |
582 | ||
583 | int flag_gen_aux_info = 0; | |
584 | ||
f246a305 RS |
585 | /* Specified name of aux-info file. */ |
586 | ||
587 | static char *aux_info_file_name; | |
588 | ||
4291d9c8 RS |
589 | /* Nonzero means make the text shared if supported. */ |
590 | ||
591 | int flag_shared_data; | |
592 | ||
593 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
594 | ||
595 | int flag_delayed_branch; | |
596 | ||
597 | /* Nonzero if we are compiling pure (sharable) code. | |
598 | Value is 1 if we are doing reasonable (i.e. simple | |
599 | offset into offset table) pic. Value is 2 if we can | |
600 | only perform register offsets. */ | |
601 | ||
602 | int flag_pic; | |
603 | ||
3d195391 MS |
604 | /* Nonzero means generate extra code for exception handling and enable |
605 | exception handling. */ | |
606 | ||
b53beeb2 | 607 | int flag_exceptions; |
3d195391 | 608 | |
a1622f83 AM |
609 | /* Nonzero means use the new model for exception handling. Replaces |
610 | -DNEW_EH_MODEL as a compile option. */ | |
611 | ||
6e487a49 | 612 | int flag_new_exceptions = 1; |
a1622f83 | 613 | |
14a774a9 RK |
614 | /* Nonzero means generate frame unwind info table when supported */ |
615 | ||
616 | int flag_unwind_tables = 0; | |
617 | ||
2786cbad | 618 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 619 | by default. */ |
4291d9c8 RS |
620 | |
621 | int flag_no_common; | |
622 | ||
623 | /* Nonzero means pretend it is OK to examine bits of target floats, | |
624 | even if that isn't true. The resulting code will have incorrect constants, | |
625 | but the same series of instructions that the native compiler would make. */ | |
626 | ||
627 | int flag_pretend_float; | |
628 | ||
629 | /* Nonzero means change certain warnings into errors. | |
630 | Usually these are warnings about failure to conform to some standard. */ | |
631 | ||
632 | int flag_pedantic_errors = 0; | |
633 | ||
634 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
635 | local_alloc). | |
636 | flag_schedule_insns_after_reload means schedule insns after | |
637 | global_alloc. */ | |
638 | ||
639 | int flag_schedule_insns = 0; | |
640 | int flag_schedule_insns_after_reload = 0; | |
641 | ||
8c660648 JL |
642 | /* The following flags have effect only for scheduling before register |
643 | allocation: | |
644 | ||
645 | flag_schedule_interblock means schedule insns accross basic blocks. | |
646 | flag_schedule_speculative means allow speculative motion of non-load insns. | |
647 | flag_schedule_speculative_load means allow speculative motion of some | |
648 | load insns. | |
649 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 650 | load insns. */ |
8c660648 JL |
651 | |
652 | int flag_schedule_interblock = 1; | |
653 | int flag_schedule_speculative = 1; | |
654 | int flag_schedule_speculative_load = 0; | |
655 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 JL |
656 | |
657 | /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple | |
658 | by a cheaper branch, on a count register. */ | |
659 | int flag_branch_on_count_reg; | |
8c660648 | 660 | |
4291d9c8 RS |
661 | /* -finhibit-size-directive inhibits output of .size for ELF. |
662 | This is used only for compiling crtstuff.c, | |
663 | and it may be extended to other effects | |
664 | needed for crtstuff.c on other systems. */ | |
665 | int flag_inhibit_size_directive = 0; | |
666 | ||
9a631e8e RS |
667 | /* -fverbose-asm causes extra commentary information to be produced in |
668 | the generated assembly code (to make it more readable). This option | |
669 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 670 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 671 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
672 | to be omitted and is useful when comparing two assembler files. */ |
673 | ||
c85f7c16 | 674 | int flag_verbose_asm = 0; |
9a631e8e | 675 | |
3d5cdd42 DE |
676 | /* -dA causes debug commentary information to be produced in |
677 | the generated assembly code (to make it more readable). This option | |
678 | is generally only of use to those who actually need to read the | |
679 | generated assembly code (perhaps while debugging the compiler itself). | |
680 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
681 | to be a catchall for printing debug information in the assembler file. */ | |
682 | ||
683 | int flag_debug_asm = 0; | |
9a631e8e | 684 | |
4291d9c8 | 685 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
686 | (Or, more generally, a linker that handles initializations.) |
687 | -fno-gnu-linker says that collect2 will be used. */ | |
688 | #ifdef USE_COLLECT2 | |
689 | int flag_gnu_linker = 0; | |
690 | #else | |
4291d9c8 | 691 | int flag_gnu_linker = 1; |
d68c507d | 692 | #endif |
4291d9c8 | 693 | |
566cdc73 MM |
694 | /* Tag all structures with __attribute__(packed) */ |
695 | int flag_pack_struct = 0; | |
696 | ||
bd83d0ac RK |
697 | /* Emit code to check for stack overflow; also may cause large objects |
698 | to be allocated dynamically. */ | |
699 | int flag_stack_check; | |
700 | ||
a157febd GK |
701 | /* When non-NULL, indicates that whenever space is allocated on the |
702 | stack, the resulting stack pointer must not pass this | |
703 | address---that is, for stacks that grow downward, the stack pointer | |
704 | must always be greater than or equal to this address; for stacks | |
705 | that grow upward, the stack pointer must be less than this address. | |
706 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
707 | the support provided depends on the backend. */ | |
708 | rtx stack_limit_rtx; | |
709 | ||
f602c208 RK |
710 | /* -fcheck-memory-usage causes extra code to be generated in order to check |
711 | memory accesses. This is used by a detector of bad memory accesses such | |
712 | as Checker. */ | |
713 | int flag_check_memory_usage = 0; | |
714 | ||
715 | /* -fprefix-function-name causes function name to be prefixed. This | |
716 | can be used with -fcheck-memory-usage to isolate code compiled with | |
717 | -fcheck-memory-usage. */ | |
718 | int flag_prefix_function_name = 0; | |
719 | ||
9ae8ffe7 JL |
720 | /* 0 if pointer arguments may alias each other. True in C. |
721 | 1 if pointer arguments may not alias each other but may alias | |
722 | global variables. | |
723 | 2 if pointer arguments may not alias each other and may not | |
724 | alias global variables. True in Fortran. | |
725 | This defaults to 0 for C. */ | |
726 | int flag_argument_noalias = 0; | |
727 | ||
41472af8 MM |
728 | /* Nonzero if we should do (language-dependent) alias analysis. |
729 | Typically, this analysis will assume that expressions of certain | |
730 | types do not alias expressions of certain other types. Only used | |
731 | if alias analysis (in general) is enabled. */ | |
732 | int flag_strict_aliasing = 0; | |
733 | ||
07417085 KR |
734 | /* Instrument functions with calls at entry and exit, for profiling. */ |
735 | int flag_instrument_function_entry_exit = 0; | |
736 | ||
be163a70 ZW |
737 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
738 | On SVR4 targets, it also controls whether or not to emit a | |
739 | string identifying the compiler. */ | |
740 | ||
741 | int flag_no_ident = 0; | |
b8468bc7 | 742 | |
ede7cd44 RH |
743 | /* This will perform a peephole pass before sched2. */ |
744 | int flag_peephole2 = 0; | |
745 | ||
a8aa7975 GM |
746 | /* -fbounded-pointers causes gcc to compile pointers as composite |
747 | objects occupying three words: the pointer value, the base address | |
748 | of the referent object, and the address immediately beyond the end | |
749 | of the referent object. The base and extent allow us to perform | |
750 | runtime bounds checking. -fbounded-pointers implies -fcheck-bounds. */ | |
751 | int flag_bounded_pointers = 0; | |
752 | ||
753 | /* -fcheck-bounds causes gcc to generate array bounds checks. | |
754 | For C, C++: defaults to value of flag_bounded_pointers. | |
755 | For ObjC: defaults to off. | |
756 | For Java: defaults to on. | |
757 | For Fortran: defaults to off. | |
758 | For CHILL: defaults to off. */ | |
759 | int flag_bounds_check = 0; | |
760 | ||
673b5311 MM |
761 | /* If one, renumber instruction UIDs to reduce the number of |
762 | unused UIDs if there are a lot of instructions. If greater than | |
763 | one, unconditionally renumber instruction UIDs. */ | |
764 | int flag_renumber_insns = 1; | |
765 | ||
efa3896a GK |
766 | /* Values of the -falign-* flags: how much to align labels in code. |
767 | 0 means `use default', 1 means `don't align'. | |
768 | For each variable, there is an _log variant which is the power | |
769 | of two not less than the variable, for .align output. */ | |
770 | ||
771 | int align_loops; | |
772 | int align_loops_log; | |
773 | int align_jumps; | |
774 | int align_jumps_log; | |
775 | int align_labels; | |
776 | int align_labels_log; | |
777 | int align_functions; | |
778 | int align_functions_log; | |
779 | ||
b8468bc7 NC |
780 | /* Table of supported debugging formats. */ |
781 | static struct | |
782 | { | |
87e11268 | 783 | const char * arg; |
b8468bc7 NC |
784 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
785 | constant expression, we use NO_DEBUG in its place. */ | |
786 | enum debug_info_type debug_type; | |
787 | int use_extensions_p; | |
87e11268 | 788 | const char * description; |
b8468bc7 NC |
789 | } *da, |
790 | debug_args[] = | |
791 | { | |
39dd8003 | 792 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
b8468bc7 | 793 | "Generate default debug format output" }, |
39dd8003 | 794 | { "gdb", NO_DEBUG, 1, "Generate default extended debug format output" }, |
b8468bc7 | 795 | #ifdef DBX_DEBUGGING_INFO |
39dd8003 NC |
796 | { "stabs", DBX_DEBUG, 0, "Generate STABS format debug output" }, |
797 | { "stabs+", DBX_DEBUG, 1, "Generate extended STABS format debug output" }, | |
b8468bc7 NC |
798 | #endif |
799 | #ifdef DWARF_DEBUGGING_INFO | |
39dd8003 NC |
800 | { "dwarf", DWARF_DEBUG, 0, "Generate DWARF-1 format debug output"}, |
801 | { "dwarf+", DWARF_DEBUG, 1, | |
b8468bc7 NC |
802 | "Generated extended DWARF-1 format debug output" }, |
803 | #endif | |
804 | #ifdef DWARF2_DEBUGGING_INFO | |
39dd8003 | 805 | { "dwarf-2", DWARF2_DEBUG, 0, "Enable DWARF-2 debug output" }, |
b8468bc7 NC |
806 | #endif |
807 | #ifdef XCOFF_DEBUGGING_INFO | |
39dd8003 NC |
808 | { "xcoff", XCOFF_DEBUG, 0, "Generate XCOFF format debug output" }, |
809 | { "xcoff+", XCOFF_DEBUG, 1, "Generate extended XCOFF format debug output" }, | |
b8468bc7 NC |
810 | #endif |
811 | #ifdef SDB_DEBUGGING_INFO | |
39dd8003 | 812 | { "coff", SDB_DEBUG, 0, "Generate COFF format debug output" }, |
b8468bc7 | 813 | #endif |
c84e2712 | 814 | { 0, 0, 0, 0 } |
b8468bc7 NC |
815 | }; |
816 | ||
817 | typedef struct | |
818 | { | |
87e11268 | 819 | const char * string; |
b8468bc7 NC |
820 | int * variable; |
821 | int on_value; | |
87e11268 | 822 | const char * description; |
b8468bc7 NC |
823 | } |
824 | lang_independent_options; | |
825 | ||
19283265 RH |
826 | /* Add or remove a leading underscore from user symbols. */ |
827 | int flag_leading_underscore = -1; | |
828 | ||
829 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 830 | const char *user_label_prefix; |
19283265 RH |
831 | |
832 | /* A default for same. */ | |
833 | #ifndef USER_LABEL_PREFIX | |
834 | #define USER_LABEL_PREFIX "" | |
835 | #endif | |
836 | ||
4291d9c8 RS |
837 | /* Table of language-independent -f options. |
838 | STRING is the option name. VARIABLE is the address of the variable. | |
839 | ON_VALUE is the value to store in VARIABLE | |
840 | if `-fSTRING' is seen as an option. | |
841 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
842 | ||
b8468bc7 | 843 | lang_independent_options f_options[] = |
4291d9c8 | 844 | { |
b8468bc7 NC |
845 | {"float-store", &flag_float_store, 1, |
846 | "Do not store floats in registers" }, | |
847 | {"volatile", &flag_volatile, 1, | |
848 | "Consider all mem refs through pointers as volatile"}, | |
849 | {"volatile-global", &flag_volatile_global, 1, | |
850 | "Consider all mem refs to global data to be volatile" }, | |
ab87f8c8 JL |
851 | {"volatile-static", &flag_volatile_static, 1, |
852 | "Consider all mem refs to static data to be volatile" }, | |
b8468bc7 NC |
853 | {"defer-pop", &flag_defer_pop, 1, |
854 | "Defer popping functions args from stack until later" }, | |
855 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, | |
856 | "When possible do not generate stack frames"}, | |
857 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, | |
858 | "When running CSE, follow jumps to their targets" }, | |
859 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, | |
860 | "When running CSE, follow conditional jumps" }, | |
861 | {"expensive-optimizations", &flag_expensive_optimizations, 1, | |
862 | "Perform a number of minor, expensive optimisations" }, | |
863 | {"thread-jumps", &flag_thread_jumps, 1, | |
864 | "Perform jump threading optimisations"}, | |
865 | {"strength-reduce", &flag_strength_reduce, 1, | |
866 | "Perform strength reduction optimisations" }, | |
867 | {"unroll-loops", &flag_unroll_loops, 1, | |
62e7b719 | 868 | "Perform loop unrolling when iteration count is known" }, |
b8468bc7 | 869 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
f1da1729 | 870 | "Perform loop unrolling for all loops" }, |
b8468bc7 NC |
871 | {"move-all-movables", &flag_move_all_movables, 1, |
872 | "Force all loop invariant computations out of loops" }, | |
873 | {"reduce-all-givs", &flag_reduce_all_givs, 1, | |
874 | "Strength reduce all loop general induction variables" }, | |
875 | {"writable-strings", &flag_writable_strings, 1, | |
876 | "Store strings in writable data section" }, | |
877 | {"peephole", &flag_no_peephole, 0, | |
878 | "Enable machine specific peephole optimisations" }, | |
879 | {"force-mem", &flag_force_mem, 1, | |
880 | "Copy memory operands into registers before using" }, | |
881 | {"force-addr", &flag_force_addr, 1, | |
882 | "Copy memory address constants into regs before using" }, | |
883 | {"function-cse", &flag_no_function_cse, 0, | |
884 | "Allow function addresses to be held in registers" }, | |
885 | {"inline-functions", &flag_inline_functions, 1, | |
886 | "Integrate simple functions into their callers" }, | |
887 | {"keep-inline-functions", &flag_keep_inline_functions, 1, | |
888 | "Generate code for funcs even if they are fully inlined" }, | |
889 | {"inline", &flag_no_inline, 0, | |
890 | "Pay attention to the 'inline' keyword"}, | |
891 | {"keep-static-consts", &flag_keep_static_consts, 1, | |
892 | "Emit static const variables even if they are not used" }, | |
893 | {"syntax-only", &flag_syntax_only, 1, | |
894 | "Check for syntax errors, then stop" }, | |
895 | {"shared-data", &flag_shared_data, 1, | |
896 | "Mark data as shared rather than private" }, | |
897 | {"caller-saves", &flag_caller_saves, 1, | |
898 | "Enable saving registers around function calls" }, | |
899 | {"pcc-struct-return", &flag_pcc_struct_return, 1, | |
900 | "Return 'short' aggregates in memory, not registers" }, | |
901 | {"reg-struct-return", &flag_pcc_struct_return, 0, | |
902 | "Return 'short' aggregates in registers" }, | |
903 | {"delayed-branch", &flag_delayed_branch, 1, | |
904 | "Attempt to fill delay slots of branch instructions" }, | |
905 | {"gcse", &flag_gcse, 1, | |
906 | "Perform the global common subexpression elimination" }, | |
907 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, | |
908 | "Run CSE pass after loop optimisations"}, | |
909 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, | |
910 | "Run the loop optimiser twice"}, | |
b6d24183 JL |
911 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1, |
912 | "Delete useless null pointer checks" }, | |
b8468bc7 NC |
913 | {"pretend-float", &flag_pretend_float, 1, |
914 | "Pretend that host and target use the same FP format"}, | |
915 | {"schedule-insns", &flag_schedule_insns, 1, | |
916 | "Reschedule instructions to avoid pipeline stalls"}, | |
917 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, | |
918 | "Run two passes of the instruction scheduler"}, | |
b8468bc7 NC |
919 | {"sched-interblock",&flag_schedule_interblock, 1, |
920 | "Enable scheduling across basic blocks" }, | |
921 | {"sched-spec",&flag_schedule_speculative, 1, | |
922 | "Allow speculative motion of non-loads" }, | |
923 | {"sched-spec-load",&flag_schedule_speculative_load, 1, | |
924 | "Allow speculative motion of some loads" }, | |
925 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, | |
926 | "Allow speculative motion of more loads" }, | |
927 | {"branch-count-reg",&flag_branch_on_count_reg, 1, | |
40f943dd | 928 | "Replace add,compare,branch with branch on count reg"}, |
b8468bc7 NC |
929 | {"pic", &flag_pic, 1, |
930 | "Generate position independent code, if possible"}, | |
931 | {"PIC", &flag_pic, 2, ""}, | |
932 | {"exceptions", &flag_exceptions, 1, | |
933 | "Enable exception handling" }, | |
934 | {"new-exceptions", &flag_new_exceptions, 1, | |
935 | "Use the new model for exception handling" }, | |
14a774a9 RK |
936 | {"unwind-tables", &flag_unwind_tables, 1, |
937 | "Just generate unwind tables for exception handling" }, | |
b8468bc7 NC |
938 | {"sjlj-exceptions", &exceptions_via_longjmp, 1, |
939 | "Use setjmp/longjmp to handle exceptions" }, | |
940 | {"asynchronous-exceptions", &asynchronous_exceptions, 1, | |
941 | "Support asynchronous exceptions" }, | |
942 | {"profile-arcs", &profile_arc_flag, 1, | |
943 | "Insert arc based program profiling code" }, | |
944 | {"test-coverage", &flag_test_coverage, 1, | |
945 | "Create data files needed by gcov" }, | |
946 | {"branch-probabilities", &flag_branch_probabilities, 1, | |
62e7b719 | 947 | "Use profiling information for branch probabilities" }, |
b8468bc7 NC |
948 | {"fast-math", &flag_fast_math, 1, |
949 | "Improve FP speed by violating ANSI & IEEE rules" }, | |
950 | {"common", &flag_no_common, 0, | |
951 | "Do not put unitialised globals in the common section" }, | |
952 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, | |
953 | "Do not generate .size directives" }, | |
954 | {"function-sections", &flag_function_sections, 1, | |
955 | "place each function into its own section" }, | |
257441db CM |
956 | {"data-sections", &flag_data_sections, 1, |
957 | "place data items into their own section" }, | |
b8468bc7 NC |
958 | {"verbose-asm", &flag_verbose_asm, 1, |
959 | "Add extra commentry to assembler output"}, | |
960 | {"gnu-linker", &flag_gnu_linker, 1, | |
961 | "Output GNU ld formatted global initialisers"}, | |
962 | {"regmove", &flag_regmove, 1, | |
c84e2712 KG |
963 | "Enables a register move optimisation"}, |
964 | {"optimize-register-move", &flag_regmove, 1, | |
965 | "Do the full regmove optimization pass"}, | |
b8468bc7 NC |
966 | {"pack-struct", &flag_pack_struct, 1, |
967 | "Pack structure members together without holes" }, | |
968 | {"stack-check", &flag_stack_check, 1, | |
969 | "Insert stack checking code into the program" }, | |
970 | {"argument-alias", &flag_argument_noalias, 0, | |
971 | "Specify that arguments may alias each other & globals"}, | |
972 | {"argument-noalias", &flag_argument_noalias, 1, | |
973 | "Assume arguments may alias globals but not each other"}, | |
974 | {"argument-noalias-global", &flag_argument_noalias, 2, | |
975 | "Assume arguments do not alias each other or globals" }, | |
976 | {"strict-aliasing", &flag_strict_aliasing, 1, | |
977 | "Assume strict aliasing rules apply" }, | |
efa3896a GK |
978 | {"align-loops", &align_loops, 0, |
979 | "Align the start of loops" }, | |
980 | {"align-jumps", &align_jumps, 0, | |
981 | "Align labels which are only reached by jumping" }, | |
982 | {"align-labels", &align_labels, 0, | |
983 | "Align all labels" }, | |
984 | {"align-functions", &align_functions, 0, | |
985 | "Align the start of functions" }, | |
b8468bc7 NC |
986 | {"check-memory-usage", &flag_check_memory_usage, 1, |
987 | "Generate code to check every memory access" }, | |
988 | {"prefix-function-name", &flag_prefix_function_name, 1, | |
989 | "Add a prefix to all function names" }, | |
c84e2712 KG |
990 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
991 | "Suppress output of instruction numbers and line number notes in debugging dumps"}, | |
07417085 KR |
992 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
993 | "Instrument function entry/exit with profiling calls"}, | |
19283265 | 994 | {"leading-underscore", &flag_leading_underscore, 1, |
be163a70 ZW |
995 | "External symbols have a leading underscore" }, |
996 | {"ident", &flag_no_ident, 0, | |
ede7cd44 RH |
997 | "Process #ident directives"}, |
998 | { "peephole2", &flag_peephole2, 1, | |
9605da8a BL |
999 | "Enables an rtl peephole pass run before sched2" }, |
1000 | {"math-errno", &flag_errno_math, 1, | |
a8aa7975 GM |
1001 | "Set errno after built-in math functions"}, |
1002 | {"bounded-pointers", &flag_bounded_pointers, 1, | |
1003 | "Compile pointers as triples: value, base & end" }, | |
1004 | {"bounds-check", &flag_bounds_check, 1, | |
1005 | "Generate code to check bounds before dereferencing pointers and arrays" } | |
4291d9c8 | 1006 | }; |
b99933c7 | 1007 | |
b8468bc7 NC |
1008 | #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0])) |
1009 | ||
b99933c7 RS |
1010 | /* Table of language-specific options. */ |
1011 | ||
b8468bc7 NC |
1012 | static struct lang_opt |
1013 | { | |
87e11268 KG |
1014 | const char * option; |
1015 | const char * description; | |
b8468bc7 NC |
1016 | } |
1017 | documented_lang_options[] = | |
b99933c7 | 1018 | { |
b8468bc7 NC |
1019 | /* In order not to overload the --help output, the convention |
1020 | used here is to only describe those options which are not | |
1021 | enabled by default. */ | |
1022 | ||
1023 | { "-ansi", "Compile just for ANSI C" }, | |
1024 | { "-fallow-single-precision", | |
1025 | "Do not promote floats to double if using -traditional" }, | |
6f4d7222 | 1026 | { "-std= ", "Determine language standard"}, |
b8468bc7 NC |
1027 | |
1028 | { "-fsigned-bitfields", "" }, | |
1029 | { "-funsigned-bitfields","Make bitfields by unsigned by default" }, | |
1030 | { "-fno-signed-bitfields", "" }, | |
1031 | { "-fno-unsigned-bitfields","" }, | |
1032 | { "-fsigned-char", "Make 'char' be signed by default"}, | |
1033 | { "-funsigned-char", "Make 'char' be unsigned by default"}, | |
1034 | { "-fno-signed-char", "" }, | |
1035 | { "-fno-unsigned-char", "" }, | |
1036 | ||
1037 | { "-ftraditional", "" }, | |
1038 | { "-traditional", "Attempt to support traditional K&R style C"}, | |
1039 | { "-fnotraditional", "" }, | |
1040 | { "-fno-traditional", "" }, | |
1041 | ||
1042 | { "-fasm", "" }, | |
1043 | { "-fno-asm", "Do not recognise the 'asm' keyword" }, | |
1044 | { "-fbuiltin", "" }, | |
1045 | { "-fno-builtin", "Do not recognise any built in functions" }, | |
1046 | { "-fhosted", "Assume normal C execution environment" }, | |
1047 | { "-fno-hosted", "" }, | |
1048 | { "-ffreestanding", | |
1049 | "Assume that standard libraries & main might not exist" }, | |
1050 | { "-fno-freestanding", "" }, | |
1051 | { "-fcond-mismatch", "Allow different types as args of ? operator"}, | |
1052 | { "-fno-cond-mismatch", "" }, | |
62e7b719 | 1053 | { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" }, |
b8468bc7 | 1054 | { "-fno-dollars-in-identifiers", "" }, |
3773a46b JM |
1055 | { "-fpreprocessed", "" }, |
1056 | { "-fno-preprocessed", "" }, | |
b8468bc7 NC |
1057 | { "-fshort-double", "Use the same size for double as for float" }, |
1058 | { "-fno-short-double", "" }, | |
1059 | { "-fshort-enums", "Use the smallest fitting integer to hold enums"}, | |
1060 | { "-fno-short-enums", "" }, | |
12a39b12 JM |
1061 | { "-fshort-wchar", "Override the underlying type for wchar_t to `unsigned short'" }, |
1062 | { "-fno-short-wchar", "" }, | |
b8468bc7 NC |
1063 | |
1064 | { "-Wall", "Enable most warning messages" }, | |
1065 | { "-Wbad-function-cast", | |
1066 | "Warn about casting functions to incompatible types" }, | |
1067 | { "-Wno-bad-function-cast", "" }, | |
0ca3fb0a KG |
1068 | { "-Wmissing-noreturn", |
1069 | "Warn about functions which might be candidates for attribute noreturn" }, | |
1070 | { "-Wno-missing-noreturn", "" }, | |
b8468bc7 NC |
1071 | { "-Wcast-qual", "Warn about casts which discard qualifiers"}, |
1072 | { "-Wno-cast-qual", "" }, | |
630962bf | 1073 | { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"}, |
b8468bc7 NC |
1074 | { "-Wno-char-subscripts", "" }, |
1075 | { "-Wcomment", "Warn if nested comments are detected" }, | |
c84e2712 KG |
1076 | { "-Wno-comment", "" }, |
1077 | { "-Wcomments", "Warn if nested comments are detected" }, | |
1078 | { "-Wno-comments", "" }, | |
b8468bc7 NC |
1079 | { "-Wconversion", "Warn about possibly confusing type conversions" }, |
1080 | { "-Wno-conversion", "" }, | |
1081 | { "-Wformat", "Warn about printf format anomalies" }, | |
1082 | { "-Wno-format", "" }, | |
1083 | { "-Wimplicit-function-declaration", | |
1084 | "Warn about implicit function declarations" }, | |
1085 | { "-Wno-implicit-function-declaration", "" }, | |
1086 | { "-Werror-implicit-function-declaration", "" }, | |
1087 | { "-Wimplicit-int", "Warn when a declaration does not specify a type" }, | |
1088 | { "-Wno-implicit-int", "" }, | |
1089 | { "-Wimplicit", "" }, | |
1090 | { "-Wno-implicit", "" }, | |
1091 | { "-Wimport", "Warn about the use of the #import directive" }, | |
1092 | { "-Wno-import", "" }, | |
1093 | { "-Wlong-long","" }, | |
1094 | { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" }, | |
1095 | { "-Wmain", "Warn about suspicious declarations of main" }, | |
1096 | { "-Wno-main", "" }, | |
1097 | { "-Wmissing-braces", | |
1098 | "Warn about possibly missing braces around initialisers" }, | |
1099 | { "-Wno-missing-braces", "" }, | |
1100 | { "-Wmissing-declarations", | |
1101 | "Warn about global funcs without previous declarations"}, | |
1102 | { "-Wno-missing-declarations", "" }, | |
1103 | { "-Wmissing-prototypes", "Warn about global funcs without prototypes" }, | |
1104 | { "-Wno-missing-prototypes", "" }, | |
1105 | { "-Wmultichar", "Warn about use of multicharacter literals"}, | |
1106 | { "-Wno-multichar", "" }, | |
1107 | { "-Wnested-externs", "Warn about externs not at file scope level" }, | |
1108 | { "-Wno-nested-externs", "" }, | |
1109 | { "-Wparentheses", "Warn about possible missing parentheses" }, | |
1110 | { "-Wno-parentheses", "" }, | |
1111 | { "-Wpointer-arith", "Warn about function pointer arithmetic" }, | |
1112 | { "-Wno-pointer-arith", "" }, | |
1113 | { "-Wredundant-decls", | |
1114 | "Warn about multiple declarations of the same object" }, | |
1115 | { "-Wno-redundant-decls", "" }, | |
1116 | { "-Wsign-compare", "Warn about signed/unsigned comparisons" }, | |
1117 | { "-Wno-sign-compare", "" }, | |
b843d210 DZ |
1118 | { "-Wfloat-equal", "Warn about testing equality of floating point numbers" }, |
1119 | { "-Wno-float-equal", "" }, | |
b8468bc7 NC |
1120 | { "-Wunknown-pragmas", "Warn about unrecognised pragmas" }, |
1121 | { "-Wno-unknown-pragmas", "" }, | |
1122 | { "-Wstrict-prototypes", "Warn about non-prototyped function decls" }, | |
1123 | { "-Wno-strict-prototypes", "" }, | |
630962bf | 1124 | { "-Wtraditional", "Warn about constructs whose meaning change in ANSI C"}, |
b8468bc7 NC |
1125 | { "-Wno-traditional", "" }, |
1126 | { "-Wtrigraphs", "Warn when trigraphs are encountered" }, | |
1127 | { "-Wno-trigraphs", "" }, | |
1128 | { "-Wundef", "" }, | |
1129 | { "-Wno-undef", "" }, | |
1130 | { "-Wwrite-strings", "Mark strings as 'const char *'"}, | |
1131 | { "-Wno-write-strings", "" }, | |
b8468bc7 NC |
1132 | |
1133 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, | |
1134 | ||
39dd8003 | 1135 | /* These are for Objective C. */ |
b8468bc7 NC |
1136 | DEFINE_LANG_NAME ("Objective C") |
1137 | ||
1138 | { "-lang-objc", "" }, | |
1139 | { "-gen-decls", "Dump decls to a .decl file" }, | |
62e7b719 | 1140 | { "-fgnu-runtime", "Generate code for GNU runtime environment" }, |
b8468bc7 NC |
1141 | { "-fno-gnu-runtime", "" }, |
1142 | { "-fnext-runtime", "Generate code for NeXT runtime environment" }, | |
1143 | { "-fno-next-runtime", "" }, | |
1144 | { "-Wselector", "Warn if a selector has multiple methods" }, | |
1145 | { "-Wno-selector", "" }, | |
1146 | { "-Wprotocol", "" }, | |
1147 | { "-Wno-protocol", "Do not warn if inherited methods are unimplemented"}, | |
1148 | { "-print-objc-runtime-info", | |
1149 | "Generate C header of platform specific features" }, | |
a0d85b75 | 1150 | |
2a95de17 | 1151 | #include "options.h" |
b8468bc7 | 1152 | |
b99933c7 | 1153 | }; |
b8468bc7 NC |
1154 | |
1155 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1156 | and which bits in `target_switches' it should set or clear. | |
1157 | If VALUE is positive, it is bits to set. | |
1158 | If VALUE is negative, -VALUE is bits to clear. | |
1159 | (The sign bit is not used so there is no confusion.) */ | |
1160 | ||
1161 | struct | |
1162 | { | |
87e11268 | 1163 | const char * name; |
b8468bc7 | 1164 | int value; |
87e11268 | 1165 | const char * description; |
b8468bc7 NC |
1166 | } |
1167 | target_switches [] = TARGET_SWITCHES; | |
1168 | ||
1169 | /* This table is similar, but allows the switch to have a value. */ | |
1170 | ||
1171 | #ifdef TARGET_OPTIONS | |
1172 | struct | |
1173 | { | |
87e11268 KG |
1174 | const char * prefix; |
1175 | const char ** variable; | |
1176 | const char * description; | |
b8468bc7 NC |
1177 | } |
1178 | target_options [] = TARGET_OPTIONS; | |
1179 | #endif | |
4291d9c8 RS |
1180 | \f |
1181 | /* Options controlling warnings */ | |
1182 | ||
1183 | /* Don't print warning messages. -w. */ | |
1184 | ||
1185 | int inhibit_warnings = 0; | |
1186 | ||
1187 | /* Print various extra warnings. -W. */ | |
1188 | ||
1189 | int extra_warnings = 0; | |
1190 | ||
1191 | /* Treat warnings as errors. -Werror. */ | |
1192 | ||
1193 | int warnings_are_errors = 0; | |
1194 | ||
1195 | /* Nonzero to warn about unused local variables. */ | |
1196 | ||
1197 | int warn_unused; | |
1198 | ||
312f6255 GK |
1199 | /* Nonzero to warn about code which is never reached. */ |
1200 | ||
1201 | int warn_notreached; | |
1202 | ||
4291d9c8 RS |
1203 | /* Nonzero to warn about variables used before they are initialized. */ |
1204 | ||
1205 | int warn_uninitialized; | |
1206 | ||
1207 | /* Nonzero means warn about all declarations which shadow others. */ | |
1208 | ||
1209 | int warn_shadow; | |
1210 | ||
1211 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
1212 | ||
1213 | int warn_switch; | |
1214 | ||
1215 | /* Nonzero means warn about function definitions that default the return type | |
1216 | or that use a null return and have a return-type other than void. */ | |
1217 | ||
1218 | int warn_return_type; | |
1219 | ||
1220 | /* Nonzero means warn about pointer casts that increase the required | |
1221 | alignment of the target type (and might therefore lead to a crash | |
1222 | due to a misaligned access). */ | |
1223 | ||
1224 | int warn_cast_align; | |
1225 | ||
1226 | /* Nonzero means warn about any identifiers that match in the first N | |
1227 | characters. The value N is in `id_clash_len'. */ | |
1228 | ||
1229 | int warn_id_clash; | |
b51e9c62 RK |
1230 | unsigned id_clash_len; |
1231 | ||
1232 | /* Nonzero means warn about any objects definitions whose size is larger | |
1233 | than N bytes. Also want about function definitions whose returned | |
1234 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
1235 | ||
1236 | int warn_larger_than; | |
1237 | unsigned larger_than_size; | |
4291d9c8 RS |
1238 | |
1239 | /* Nonzero means warn if inline function is too large. */ | |
1240 | ||
1241 | int warn_inline; | |
1242 | ||
1243 | /* Warn if a function returns an aggregate, | |
1244 | since there are often incompatible calling conventions for doing this. */ | |
1245 | ||
1246 | int warn_aggregate_return; | |
1247 | ||
3c12fcc2 GM |
1248 | /* Warn if packed attribute on struct is unnecessary and inefficient. */ |
1249 | ||
1250 | int warn_packed; | |
1251 | ||
1252 | /* Warn when gcc pads a structure to an alignment boundary. */ | |
1253 | ||
1254 | int warn_padded; | |
1255 | ||
4291d9c8 RS |
1256 | /* Likewise for -W. */ |
1257 | ||
b8468bc7 | 1258 | lang_independent_options W_options[] = |
4291d9c8 | 1259 | { |
b8468bc7 NC |
1260 | {"unused", &warn_unused, 1, "Warn when a variable is unused" }, |
1261 | {"error", &warnings_are_errors, 1, ""}, | |
1262 | {"shadow", &warn_shadow, 1, "Warn when one local variable shadows another" }, | |
1263 | {"switch", &warn_switch, 1, | |
1264 | "Warn about enumerated switches missing a specific case" }, | |
1265 | {"aggregate-return", &warn_aggregate_return, 1, | |
1266 | "Warn about returning structures, unions or arrays" }, | |
1267 | {"cast-align", &warn_cast_align, 1, | |
1268 | "Warn about pointer casts which increase alignment" }, | |
312f6255 GK |
1269 | {"unreachable-code", &warn_notreached, 1, |
1270 | "Warn about code that will never be executed" }, | |
b8468bc7 NC |
1271 | {"uninitialized", &warn_uninitialized, 1, |
1272 | "Warn about unitialized automatic variables"}, | |
1273 | {"inline", &warn_inline, 1, | |
3c12fcc2 GM |
1274 | "Warn when an inlined function cannot be inlined"}, |
1275 | {"packed", &warn_packed, 1, | |
1276 | "Warn when the packed attribute has no effect on struct layout"}, | |
1277 | {"padded", &warn_padded, 1, | |
1278 | "Warn when padding is required to align struct members"} | |
4291d9c8 RS |
1279 | }; |
1280 | \f | |
1281 | /* Output files for assembler code (real compiler output) | |
1282 | and debugging dumps. */ | |
1283 | ||
1284 | FILE *asm_out_file; | |
1285 | FILE *aux_info_file; | |
032713aa | 1286 | FILE *rtl_dump_file = NULL; |
4291d9c8 | 1287 | |
132e01b1 TP |
1288 | /* Decode the string P as an integral parameter. |
1289 | If the string is indeed an integer return its numeric value else | |
192babfd TP |
1290 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
1291 | If PNAME is zero just return DEFVAL, do not call error. */ | |
132e01b1 TP |
1292 | |
1293 | int | |
1294 | read_integral_parameter (p, pname, defval) | |
192babfd TP |
1295 | const char *p; |
1296 | const char *pname; | |
1297 | const int defval; | |
132e01b1 | 1298 | { |
192babfd | 1299 | const char *endp = p; |
132e01b1 TP |
1300 | |
1301 | while (*endp) | |
1302 | { | |
1303 | if (*endp >= '0' && *endp <= '9') | |
1304 | endp++; | |
1305 | else | |
192babfd TP |
1306 | break; |
1307 | } | |
1308 | ||
1309 | if (*endp != 0) | |
1310 | { | |
1311 | if (pname != 0) | |
1312 | error ("Invalid option `%s'", pname); | |
1313 | return defval; | |
132e01b1 TP |
1314 | } |
1315 | ||
1316 | return atoi (p); | |
1317 | } | |
1318 | ||
1319 | ||
4291d9c8 RS |
1320 | /* Time accumulators, to count the total time spent in various passes. */ |
1321 | ||
1322 | int parse_time; | |
1323 | int varconst_time; | |
1324 | int integration_time; | |
1325 | int jump_time; | |
1326 | int cse_time; | |
7506f491 | 1327 | int gcse_time; |
4291d9c8 RS |
1328 | int loop_time; |
1329 | int cse2_time; | |
0d332add | 1330 | int branch_prob_time; |
4291d9c8 RS |
1331 | int flow_time; |
1332 | int combine_time; | |
8c660648 | 1333 | int regmove_time; |
4291d9c8 RS |
1334 | int sched_time; |
1335 | int local_alloc_time; | |
1336 | int global_alloc_time; | |
e881bb1b | 1337 | int flow2_time; |
375e2d5c | 1338 | int peephole2_time; |
4291d9c8 RS |
1339 | int sched2_time; |
1340 | int dbr_sched_time; | |
1341 | int shorten_branch_time; | |
1342 | int stack_reg_time; | |
1343 | int final_time; | |
1344 | int symout_time; | |
1345 | int dump_time; | |
0a25f1f5 RH |
1346 | int gc_time; |
1347 | int all_time; | |
4291d9c8 RS |
1348 | \f |
1349 | /* Return time used so far, in microseconds. */ | |
1350 | ||
2778b98d | 1351 | long |
4291d9c8 RS |
1352 | get_run_time () |
1353 | { | |
4291d9c8 RS |
1354 | if (quiet_flag) |
1355 | return 0; | |
83c8ddef | 1356 | |
332c1bb4 JL |
1357 | #ifdef __BEOS__ |
1358 | return 0; | |
1359 | #else /* not BeOS */ | |
cae21ae8 | 1360 | #if defined (_WIN32) && !defined (__CYGWIN__) |
15f00097 RK |
1361 | if (clock() < 0) |
1362 | return 0; | |
1363 | else | |
1364 | return (clock() * 1000); | |
9580b583 | 1365 | #else /* not _WIN32 */ |
4e762a38 JC |
1366 | #ifdef _SC_CLK_TCK |
1367 | { | |
1368 | static int tick; | |
83c8ddef | 1369 | struct tms tms; |
4e762a38 JC |
1370 | if (tick == 0) |
1371 | tick = 1000000 / sysconf(_SC_CLK_TCK); | |
1372 | times (&tms); | |
1373 | return (tms.tms_utime + tms.tms_stime) * tick; | |
1374 | } | |
1375 | #else | |
4291d9c8 | 1376 | #ifdef USG |
83c8ddef RH |
1377 | { |
1378 | struct tms tms; | |
e5e809f4 JL |
1379 | # if HAVE_SYSCONF && defined _SC_CLK_TCK |
1380 | # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */ | |
1381 | # else | |
1382 | # ifdef CLK_TCK | |
1383 | # define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */ | |
1384 | # else | |
1385 | # define TICKS_PER_SECOND HZ /* traditional UNIX */ | |
1386 | # endif | |
1387 | # endif | |
83c8ddef | 1388 | times (&tms); |
e5e809f4 | 1389 | return (tms.tms_utime + tms.tms_stime) * (1000000 / TICKS_PER_SECOND); |
83c8ddef | 1390 | } |
4291d9c8 RS |
1391 | #else |
1392 | #ifndef VMS | |
83c8ddef RH |
1393 | { |
1394 | struct rusage rusage; | |
1395 | getrusage (0, &rusage); | |
1396 | return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec | |
1397 | + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); | |
1398 | } | |
4291d9c8 | 1399 | #else /* VMS */ |
83c8ddef RH |
1400 | { |
1401 | struct | |
1402 | { | |
1403 | int proc_user_time; | |
1404 | int proc_system_time; | |
1405 | int child_user_time; | |
1406 | int child_system_time; | |
1407 | } vms_times; | |
1408 | times ((void *) &vms_times); | |
1409 | return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; | |
1410 | } | |
c55dcc7d FF |
1411 | #endif /* VMS */ |
1412 | #endif /* USG */ | |
4e762a38 | 1413 | #endif /* _SC_CLK_TCK */ |
c55dcc7d FF |
1414 | #endif /* _WIN32 */ |
1415 | #endif /* __BEOS__ */ | |
4291d9c8 RS |
1416 | } |
1417 | ||
1418 | #define TIMEVAR(VAR, BODY) \ | |
1419 | do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0) | |
1420 | ||
1421 | void | |
1422 | print_time (str, total) | |
87e11268 | 1423 | const char *str; |
4291d9c8 RS |
1424 | int total; |
1425 | { | |
1426 | fprintf (stderr, | |
0a25f1f5 RH |
1427 | "time in %s: %d.%06d (%.0f%%)\n", |
1428 | str, total / 1000000, total % 1000000, | |
1429 | (double)total / (double)all_time * 100.0); | |
4291d9c8 RS |
1430 | } |
1431 | ||
4291d9c8 RS |
1432 | /* This is the default decl_printable_name function. */ |
1433 | ||
5f8ded66 | 1434 | static const char * |
a1d7ffe3 | 1435 | decl_name (decl, verbosity) |
4291d9c8 | 1436 | tree decl; |
114791ea | 1437 | int verbosity ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1438 | { |
1439 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1440 | } | |
1441 | \f | |
afe3d090 BS |
1442 | /* Mark P for GC. Also mark main_input_filename and input_filename. */ |
1443 | static void | |
1444 | mark_file_stack (p) | |
1445 | void *p; | |
1446 | { | |
1447 | struct file_stack *stack = *(struct file_stack **)p; | |
1448 | ||
1449 | /* We're only called for input_file_stack, so we can mark the current | |
1450 | input_filename here as well. */ | |
1451 | ggc_mark_string (main_input_filename); | |
1452 | ggc_mark_string (input_filename); | |
1453 | ||
1454 | while (stack) | |
1455 | { | |
1456 | ggc_mark_string (stack->name); | |
1457 | stack = stack->next; | |
1458 | } | |
1459 | } | |
4291d9c8 | 1460 | \f |
4291d9c8 RS |
1461 | |
1462 | /* This calls abort and is used to avoid problems when abort if a macro. | |
1463 | It is used when we need to pass the address of abort. */ | |
1464 | ||
1465 | void | |
1466 | do_abort () | |
1467 | { | |
1468 | abort (); | |
1469 | } | |
1470 | ||
1471 | /* When `malloc.c' is compiled with `rcheck' defined, | |
1472 | it calls this function to report clobberage. */ | |
1473 | ||
1474 | void | |
1475 | botch (s) | |
87e11268 | 1476 | const char * s ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1477 | { |
1478 | abort (); | |
1479 | } | |
4291d9c8 RS |
1480 | \f |
1481 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
1482 | if X is a power of 2. Otherwise, returns -1. |
1483 | ||
1484 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1485 | |
1486 | int | |
37366632 RK |
1487 | exact_log2_wide (x) |
1488 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1489 | { |
1490 | register int log = 0; | |
1491 | /* Test for 0 or a power of 2. */ | |
1492 | if (x == 0 || x != (x & -x)) | |
1493 | return -1; | |
1494 | while ((x >>= 1) != 0) | |
1495 | log++; | |
1496 | return log; | |
1497 | } | |
1498 | ||
1499 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1500 | If X is 0, return -1. |
1501 | ||
1502 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1503 | |
1504 | int | |
37366632 RK |
1505 | floor_log2_wide (x) |
1506 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1507 | { |
1508 | register int log = -1; | |
1509 | while (x != 0) | |
1510 | log++, | |
1511 | x >>= 1; | |
1512 | return log; | |
1513 | } | |
1514 | ||
3bbfa296 | 1515 | static int float_handler_set; |
4291d9c8 RS |
1516 | int float_handled; |
1517 | jmp_buf float_handler; | |
1518 | ||
3bbfa296 RK |
1519 | /* Signals actually come here. */ |
1520 | ||
1521 | static void | |
1522 | float_signal (signo) | |
1523 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 1524 | int signo ATTRIBUTE_UNUSED; |
3bbfa296 RK |
1525 | { |
1526 | if (float_handled == 0) | |
1527 | abort (); | |
1528 | #if defined (USG) || defined (hpux) | |
1529 | signal (SIGFPE, float_signal); /* re-enable the signal catcher */ | |
1530 | #endif | |
1531 | float_handled = 0; | |
1532 | signal (SIGFPE, float_signal); | |
1533 | longjmp (float_handler, 1); | |
1534 | } | |
1535 | ||
4291d9c8 RS |
1536 | /* Specify where to longjmp to when a floating arithmetic error happens. |
1537 | If HANDLER is 0, it means don't handle the errors any more. */ | |
1538 | ||
1539 | void | |
1540 | set_float_handler (handler) | |
1541 | jmp_buf handler; | |
1542 | { | |
1543 | float_handled = (handler != 0); | |
1544 | if (handler) | |
4c9a05bc | 1545 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
3bbfa296 RK |
1546 | |
1547 | if (float_handled && ! float_handler_set) | |
1548 | { | |
1549 | signal (SIGFPE, float_signal); | |
1550 | float_handler_set = 1; | |
1551 | } | |
4291d9c8 RS |
1552 | } |
1553 | ||
1a87eea2 KG |
1554 | /* This is a wrapper function for code which might elicit an |
1555 | arithmetic exception. That code should be passed in as a function | |
1556 | pointer FN, and one argument DATA. DATA is usually a struct which | |
1557 | contains the real input and output for function FN. This function | |
1558 | returns 0 (failure) if longjmp was called (i.e. an exception | |
1559 | occured.) It returns 1 (success) otherwise. */ | |
1560 | ||
1561 | int | |
1562 | do_float_handler (fn, data) | |
1563 | void (*fn) PROTO ((PTR)); | |
1564 | PTR data; | |
1565 | { | |
1566 | jmp_buf buf; | |
1567 | ||
1568 | if (setjmp (buf)) | |
1569 | { | |
1570 | /* We got here via longjmp() caused by an exception in function fn() */ | |
1571 | set_float_handler (NULL); | |
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | set_float_handler (buf); | |
1576 | (*fn)(data); | |
1577 | set_float_handler (NULL); | |
1578 | return 1; | |
1579 | } | |
1580 | ||
bff4b641 RS |
1581 | /* Specify, in HANDLER, where to longjmp to when a floating arithmetic |
1582 | error happens, pushing the previous specification into OLD_HANDLER. | |
1583 | Return an indication of whether there was a previous handler in effect. */ | |
1584 | ||
1585 | int | |
1586 | push_float_handler (handler, old_handler) | |
dc2b15dc | 1587 | jmp_buf handler, old_handler; |
bff4b641 RS |
1588 | { |
1589 | int was_handled = float_handled; | |
1590 | ||
1591 | float_handled = 1; | |
1592 | if (was_handled) | |
7e2231e7 | 1593 | memcpy ((char *) old_handler, (char *) float_handler, |
4c9a05bc RK |
1594 | sizeof (float_handler)); |
1595 | ||
7e2231e7 | 1596 | memcpy ((char *) float_handler, (char *) handler, sizeof (float_handler)); |
bff4b641 RS |
1597 | return was_handled; |
1598 | } | |
1599 | ||
1600 | /* Restore the previous specification of whether and where to longjmp to | |
1601 | when a floating arithmetic error happens. */ | |
1602 | ||
1603 | void | |
1604 | pop_float_handler (handled, handler) | |
1605 | int handled; | |
1606 | jmp_buf handler; | |
1607 | { | |
1608 | float_handled = handled; | |
1609 | if (handled) | |
4c9a05bc | 1610 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
bff4b641 RS |
1611 | } |
1612 | ||
4291d9c8 RS |
1613 | /* Handler for SIGPIPE. */ |
1614 | ||
1615 | static void | |
1616 | pipe_closed (signo) | |
1617 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 1618 | int signo ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1619 | { |
1620 | fatal ("output pipe has been closed"); | |
1621 | } | |
1622 | ||
1623 | /* Strip off a legitimate source ending from the input string NAME of | |
c62bdc79 | 1624 | length LEN. Rather than having to know the names used by all of |
2290e0ec PB |
1625 | our front ends, we strip off an ending of a period followed by |
1626 | up to five characters. (Java uses ".class".) */ | |
4291d9c8 RS |
1627 | |
1628 | void | |
1629 | strip_off_ending (name, len) | |
1630 | char *name; | |
1631 | int len; | |
1632 | { | |
2290e0ec PB |
1633 | int i; |
1634 | for (i = 2; i < 6 && len > i; i++) | |
1635 | { | |
1636 | if (name[len - i] == '.') | |
1637 | { | |
1638 | name[len - i] = '\0'; | |
1639 | break; | |
1640 | } | |
1641 | } | |
4291d9c8 RS |
1642 | } |
1643 | ||
7dce5088 | 1644 | /* Output a quoted string. */ |
0f41302f | 1645 | |
7dce5088 PE |
1646 | void |
1647 | output_quoted_string (asm_file, string) | |
1648 | FILE *asm_file; | |
87e11268 | 1649 | const char *string; |
7dce5088 | 1650 | { |
e9a25f70 JL |
1651 | #ifdef OUTPUT_QUOTED_STRING |
1652 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1653 | #else | |
7dce5088 PE |
1654 | char c; |
1655 | ||
1656 | putc ('\"', asm_file); | |
1657 | while ((c = *string++) != 0) | |
1658 | { | |
1659 | if (c == '\"' || c == '\\') | |
1660 | putc ('\\', asm_file); | |
1661 | putc (c, asm_file); | |
1662 | } | |
1663 | putc ('\"', asm_file); | |
e9a25f70 | 1664 | #endif |
7dce5088 PE |
1665 | } |
1666 | ||
4291d9c8 RS |
1667 | /* Output a file name in the form wanted by System V. */ |
1668 | ||
1669 | void | |
1670 | output_file_directive (asm_file, input_name) | |
1671 | FILE *asm_file; | |
87e11268 | 1672 | const char *input_name; |
4291d9c8 RS |
1673 | { |
1674 | int len = strlen (input_name); | |
87e11268 | 1675 | const char *na = input_name + len; |
4291d9c8 RS |
1676 | |
1677 | /* NA gets INPUT_NAME sans directory names. */ | |
1678 | while (na > input_name) | |
1679 | { | |
73532e43 JL |
1680 | if (na[-1] == '/') |
1681 | break; | |
1682 | #ifdef DIR_SEPARATOR | |
fed3e408 | 1683 | if (na[-1] == DIR_SEPARATOR) |
4291d9c8 | 1684 | break; |
73532e43 | 1685 | #endif |
4291d9c8 RS |
1686 | na--; |
1687 | } | |
1688 | ||
1689 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1690 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1691 | #else | |
1692 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1693 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1694 | #else | |
7dce5088 PE |
1695 | fprintf (asm_file, "\t.file\t"); |
1696 | output_quoted_string (asm_file, na); | |
1697 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1698 | #endif |
1699 | #endif | |
1700 | } | |
1701 | \f | |
444bf316 | 1702 | #ifdef ASM_IDENTIFY_LANGUAGE |
0f41302f | 1703 | /* Routine to build language identifier for object file. */ |
d0d4af87 MS |
1704 | static void |
1705 | output_lang_identify (asm_out_file) | |
1706 | FILE *asm_out_file; | |
1707 | { | |
1708 | int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1; | |
1709 | char *s = (char *) alloca (len); | |
1710 | sprintf (s, "__gnu_compiled_%s", lang_identify ()); | |
1711 | ASM_OUTPUT_LABEL (asm_out_file, s); | |
1712 | } | |
444bf316 | 1713 | #endif |
d0d4af87 | 1714 | |
dfe1a916 | 1715 | /* Routine to open a dump file. */ |
032713aa NC |
1716 | static void |
1717 | open_dump_file (suffix, function_name) | |
87e11268 KG |
1718 | const char *suffix; |
1719 | const char *function_name; | |
032713aa NC |
1720 | { |
1721 | char *dumpname; | |
0f41302f | 1722 | |
032713aa NC |
1723 | TIMEVAR |
1724 | (dump_time, | |
1725 | { | |
ad85216e | 1726 | dumpname = concat (dump_base_name, suffix, NULL); |
032713aa NC |
1727 | |
1728 | if (rtl_dump_file != NULL) | |
1729 | fclose (rtl_dump_file); | |
1730 | ||
032713aa NC |
1731 | rtl_dump_file = fopen (dumpname, "a"); |
1732 | ||
1733 | if (rtl_dump_file == NULL) | |
1734 | pfatal_with_name (dumpname); | |
1735 | ||
1736 | free (dumpname); | |
1737 | ||
1738 | if (function_name) | |
1739 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", function_name); | |
1740 | }); | |
1741 | ||
1742 | return; | |
1743 | } | |
1744 | ||
1745 | /* Routine to close a dump file. */ | |
1746 | static void | |
1747 | close_dump_file (func, insns) | |
eed90b2c | 1748 | void (*func) PROTO ((FILE *, rtx)); |
032713aa NC |
1749 | rtx insns; |
1750 | { | |
1751 | TIMEVAR | |
1752 | (dump_time, | |
1753 | { | |
1754 | if (func) | |
1755 | func (rtl_dump_file, insns); | |
1756 | ||
1757 | fflush (rtl_dump_file); | |
1758 | fclose (rtl_dump_file); | |
1759 | ||
1760 | rtl_dump_file = NULL; | |
1761 | }); | |
1762 | ||
1763 | return; | |
1764 | } | |
1765 | ||
1766 | /* Routine to dump rtl into a file. */ | |
1767 | static void | |
1768 | dump_rtl (suffix, decl, func, insns) | |
87e11268 | 1769 | const char *suffix; |
032713aa | 1770 | tree decl; |
eed90b2c | 1771 | void (*func) PROTO ((FILE *, rtx)); |
032713aa | 1772 | rtx insns; |
dfe1a916 | 1773 | { |
032713aa NC |
1774 | open_dump_file (suffix, decl_printable_name (decl, 2)); |
1775 | close_dump_file (func, insns); | |
1776 | } | |
1777 | ||
1778 | /* Routine to empty a dump file. */ | |
1779 | static void | |
1780 | clean_dump_file (suffix) | |
87e11268 | 1781 | const char *suffix; |
032713aa | 1782 | { |
ad85216e | 1783 | char * const dumpname = concat (dump_base_name, suffix, NULL); |
dfe1a916 | 1784 | |
032713aa NC |
1785 | rtl_dump_file = fopen (dumpname, "w"); |
1786 | ||
1787 | if (rtl_dump_file == NULL) | |
1788 | pfatal_with_name (dumpname); | |
1789 | ||
1790 | free (dumpname); | |
1791 | ||
1792 | fclose (rtl_dump_file); | |
1793 | rtl_dump_file = NULL; | |
1794 | ||
1795 | return; | |
dfe1a916 DE |
1796 | } |
1797 | ||
32291f94 MM |
1798 | /* Do any final processing required for the declarations in VEC, of |
1799 | which there are LEN. We write out inline functions and variables | |
1800 | that have been deferred until this point, but which are required. | |
1801 | Returns non-zero if anything was put out. */ | |
1802 | int | |
1803 | wrapup_global_declarations (vec, len) | |
1804 | tree *vec; | |
1805 | int len; | |
1806 | { | |
1807 | tree decl; | |
1808 | int i; | |
1809 | int reconsider; | |
1810 | int output_something = 0; | |
1811 | ||
1812 | for (i = 0; i < len; i++) | |
1813 | { | |
1814 | decl = vec[i]; | |
1815 | ||
1816 | /* We're not deferring this any longer. */ | |
1817 | DECL_DEFER_OUTPUT (decl) = 0; | |
1818 | ||
1819 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 | |
1820 | && incomplete_decl_finalize_hook != 0) | |
1821 | (*incomplete_decl_finalize_hook) (decl); | |
1822 | } | |
1823 | ||
1824 | /* Now emit any global variables or functions that we have been | |
1825 | putting off. We need to loop in case one of the things emitted | |
1826 | here references another one which comes earlier in the list. */ | |
1827 | do | |
1828 | { | |
1829 | reconsider = 0; | |
1830 | for (i = 0; i < len; i++) | |
1831 | { | |
1832 | decl = vec[i]; | |
1833 | ||
1834 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1835 | continue; | |
1836 | ||
1837 | /* Don't write out static consts, unless we still need them. | |
1838 | ||
1839 | We also keep static consts if not optimizing (for debugging), | |
1840 | unless the user specified -fno-keep-static-consts. | |
1841 | ??? They might be better written into the debug information. | |
1842 | This is possible when using DWARF. | |
1843 | ||
1844 | A language processor that wants static constants to be always | |
1845 | written out (even if it is not used) is responsible for | |
1846 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
1847 | calls rest_of_decl_compilation from finish_decl. | |
1848 | One motivation for this is that is conventional in some | |
1849 | environments to write things like: | |
1850 | static const char rcsid[] = "... version string ..."; | |
1851 | intending to force the string to be in the executable. | |
1852 | ||
1853 | A language processor that would prefer to have unneeded | |
1854 | static constants "optimized away" would just defer writing | |
1855 | them out until here. E.g. C++ does this, because static | |
1856 | constants are often defined in header files. | |
1857 | ||
1858 | ??? A tempting alternative (for both C and C++) would be | |
1859 | to force a constant to be written if and only if it is | |
1860 | defined in a main file, as opposed to an include file. */ | |
1861 | ||
1862 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
1863 | && (! TREE_READONLY (decl) | |
1864 | || TREE_PUBLIC (decl) | |
1865 | || (!optimize && flag_keep_static_consts) | |
1866 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
1867 | { | |
1868 | reconsider = 1; | |
1869 | rest_of_decl_compilation (decl, NULL_PTR, 1, 1); | |
1870 | } | |
1871 | ||
1872 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1873 | && DECL_INITIAL (decl) != 0 | |
1874 | && DECL_SAVED_INSNS (decl) != 0 | |
1875 | && (flag_keep_inline_functions | |
59182242 | 1876 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
1877 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
1878 | { | |
1879 | reconsider = 1; | |
1880 | temporary_allocation (); | |
1881 | output_inline_function (decl); | |
1882 | permanent_allocation (1); | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | if (reconsider) | |
1887 | output_something = 1; | |
1888 | } | |
1889 | while (reconsider); | |
1890 | ||
1891 | return output_something; | |
1892 | } | |
1893 | ||
1894 | /* Issue appropriate warnings for the global declarations in VEC (of | |
1895 | which there are LEN). Output debugging information for them. */ | |
1896 | void | |
1897 | check_global_declarations (vec, len) | |
1898 | tree *vec; | |
1899 | int len; | |
1900 | { | |
1901 | tree decl; | |
1902 | int i; | |
1903 | ||
1904 | for (i = 0; i < len; i++) | |
1905 | { | |
1906 | decl = vec[i]; | |
1907 | ||
1908 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
1909 | && ! TREE_ASM_WRITTEN (decl)) | |
1910 | /* Cancel the RTL for this decl so that, if debugging info | |
1911 | output for global variables is still to come, | |
1912 | this one will be omitted. */ | |
1913 | DECL_RTL (decl) = NULL; | |
1914 | ||
1915 | /* Warn about any function | |
1916 | declared static but not defined. | |
1917 | We don't warn about variables, | |
1918 | because many programs have static variables | |
1919 | that exist only to get some text into the object file. */ | |
1920 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1921 | && (warn_unused | |
1922 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
1923 | && DECL_INITIAL (decl) == 0 | |
1924 | && DECL_EXTERNAL (decl) | |
1925 | && ! DECL_ARTIFICIAL (decl) | |
1926 | && ! TREE_PUBLIC (decl)) | |
1927 | { | |
1928 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
1929 | pedwarn_with_decl (decl, | |
1930 | "`%s' used but never defined"); | |
1931 | else | |
1932 | warning_with_decl (decl, | |
1933 | "`%s' declared `static' but never defined"); | |
1934 | /* This symbol is effectively an "extern" declaration now. */ | |
1935 | TREE_PUBLIC (decl) = 1; | |
1936 | assemble_external (decl); | |
1937 | } | |
1938 | ||
1939 | /* Warn about static fns or vars defined but not used, | |
1940 | but not about inline functions or static consts | |
1941 | since defining those in header files is normal practice. */ | |
1942 | if (warn_unused | |
1943 | && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) | |
1944 | || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
1945 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
1946 | && ! DECL_EXTERNAL (decl) | |
1947 | && ! TREE_PUBLIC (decl) | |
1948 | && ! TREE_USED (decl) | |
1949 | && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl)) | |
1950 | /* The TREE_USED bit for file-scope decls | |
1951 | is kept in the identifier, to handle multiple | |
1952 | external decls in different scopes. */ | |
1953 | && ! TREE_USED (DECL_NAME (decl))) | |
1954 | warning_with_decl (decl, "`%s' defined but not used"); | |
1955 | ||
1956 | #ifdef SDB_DEBUGGING_INFO | |
1957 | /* The COFF linker can move initialized global vars to the end. | |
1958 | And that can screw up the symbol ordering. | |
1959 | By putting the symbols in that order to begin with, | |
1960 | we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */ | |
1961 | if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL | |
1962 | && TREE_PUBLIC (decl) && DECL_INITIAL (decl) | |
1963 | && ! DECL_EXTERNAL (decl) | |
1964 | && DECL_RTL (decl) != 0) | |
1965 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
1966 | ||
1967 | /* Output COFF information for non-global | |
1968 | file-scope initialized variables. */ | |
1969 | if (write_symbols == SDB_DEBUG | |
1970 | && TREE_CODE (decl) == VAR_DECL | |
1971 | && DECL_INITIAL (decl) | |
1972 | && ! DECL_EXTERNAL (decl) | |
1973 | && DECL_RTL (decl) != 0 | |
1974 | && GET_CODE (DECL_RTL (decl)) == MEM) | |
1975 | TIMEVAR (symout_time, sdbout_toplevel_data (decl)); | |
1976 | #endif /* SDB_DEBUGGING_INFO */ | |
1977 | #ifdef DWARF_DEBUGGING_INFO | |
1978 | /* Output DWARF information for file-scope tentative data object | |
1979 | declarations, file-scope (extern) function declarations (which | |
1980 | had no corresponding body) and file-scope tagged type declarations | |
1981 | and definitions which have not yet been forced out. */ | |
1982 | ||
1983 | if (write_symbols == DWARF_DEBUG | |
1984 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
1985 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1)); | |
1986 | #endif | |
1987 | #ifdef DWARF2_DEBUGGING_INFO | |
1988 | /* Output DWARF2 information for file-scope tentative data object | |
1989 | declarations, file-scope (extern) function declarations (which | |
1990 | had no corresponding body) and file-scope tagged type declarations | |
1991 | and definitions which have not yet been forced out. */ | |
1992 | ||
1993 | if (write_symbols == DWARF2_DEBUG | |
1994 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
1995 | TIMEVAR (symout_time, dwarf2out_decl (decl)); | |
1996 | #endif | |
1997 | } | |
1998 | } | |
032713aa | 1999 | |
4291d9c8 RS |
2000 | /* Compile an entire file of output from cpp, named NAME. |
2001 | Write a file of assembly output and various debugging dumps. */ | |
2002 | ||
2003 | static void | |
2004 | compile_file (name) | |
2005 | char *name; | |
2006 | { | |
2007 | tree globals; | |
2008 | int start_time; | |
4291d9c8 RS |
2009 | |
2010 | int name_specified = name != 0; | |
2011 | ||
2012 | if (dump_base_name == 0) | |
2013 | dump_base_name = name ? name : "gccdump"; | |
4291d9c8 RS |
2014 | |
2015 | parse_time = 0; | |
2016 | varconst_time = 0; | |
2017 | integration_time = 0; | |
2018 | jump_time = 0; | |
2019 | cse_time = 0; | |
7506f491 | 2020 | gcse_time = 0; |
4291d9c8 RS |
2021 | loop_time = 0; |
2022 | cse2_time = 0; | |
0d332add | 2023 | branch_prob_time = 0; |
4291d9c8 RS |
2024 | flow_time = 0; |
2025 | combine_time = 0; | |
8c660648 | 2026 | regmove_time = 0; |
4291d9c8 RS |
2027 | sched_time = 0; |
2028 | local_alloc_time = 0; | |
2029 | global_alloc_time = 0; | |
e881bb1b | 2030 | flow2_time = 0; |
375e2d5c | 2031 | peephole2_time = 0; |
4291d9c8 RS |
2032 | sched2_time = 0; |
2033 | dbr_sched_time = 0; | |
2034 | shorten_branch_time = 0; | |
2035 | stack_reg_time = 0; | |
2036 | final_time = 0; | |
2037 | symout_time = 0; | |
2038 | dump_time = 0; | |
2039 | ||
4291d9c8 RS |
2040 | /* Initialize data in various passes. */ |
2041 | ||
2042 | init_obstacks (); | |
2043 | init_tree_codes (); | |
5c60e5c0 | 2044 | name = init_parse (name); |
4291d9c8 | 2045 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
0d332add | 2046 | || debug_info_level == DINFO_LEVEL_VERBOSE |
312f6255 GK |
2047 | || flag_test_coverage |
2048 | || warn_notreached); | |
7f21d440 | 2049 | init_regs (); |
4291d9c8 RS |
2050 | init_decl_processing (); |
2051 | init_optabs (); | |
2052 | init_stmt (); | |
fa51b01b | 2053 | init_eh (); |
4291d9c8 RS |
2054 | init_loop (); |
2055 | init_reload (); | |
6e73e666 | 2056 | init_alias_once (); |
87ff9c8e | 2057 | init_function_once (); |
d7db6646 | 2058 | init_stor_layout_once (); |
76095e2f | 2059 | init_varasm_once (); |
4291d9c8 | 2060 | |
49ad7cfa BS |
2061 | /* The following initialization functions need to generate rtl, so |
2062 | provide a dummy function context for them. */ | |
2063 | init_dummy_function_start (); | |
2064 | init_expmed (); | |
2065 | init_expr_once (); | |
4291d9c8 RS |
2066 | if (flag_caller_saves) |
2067 | init_caller_save (); | |
49ad7cfa | 2068 | expand_dummy_function_end (); |
4291d9c8 | 2069 | |
f246a305 RS |
2070 | /* If auxiliary info generation is desired, open the output file. |
2071 | This goes in the same directory as the source file--unlike | |
2072 | all the other output files. */ | |
4291d9c8 RS |
2073 | if (flag_gen_aux_info) |
2074 | { | |
4291d9c8 RS |
2075 | aux_info_file = fopen (aux_info_file_name, "w"); |
2076 | if (aux_info_file == 0) | |
2077 | pfatal_with_name (aux_info_file_name); | |
2078 | } | |
2079 | ||
735a0e33 | 2080 | /* Clear the dump files. */ |
4291d9c8 | 2081 | if (rtl_dump) |
375e2d5c | 2082 | clean_dump_file (".00.rtl"); |
4291d9c8 | 2083 | if (jump_opt_dump) |
735a0e33 | 2084 | { |
375e2d5c RH |
2085 | clean_dump_file (".01.jump"); |
2086 | if (graph_dump_format != no_graph) | |
2087 | clean_graph_dump_file (dump_base_name, ".01.jump"); | |
2088 | } | |
2089 | if (cse_dump) | |
2090 | { | |
2091 | clean_dump_file (".02.cse"); | |
735a0e33 | 2092 | if (graph_dump_format != no_graph) |
375e2d5c | 2093 | clean_graph_dump_file (dump_base_name, ".02.cse"); |
735a0e33 | 2094 | } |
e9a25f70 | 2095 | if (addressof_dump) |
735a0e33 | 2096 | { |
375e2d5c | 2097 | clean_dump_file (".03.addressof"); |
735a0e33 | 2098 | if (graph_dump_format != no_graph) |
375e2d5c | 2099 | clean_graph_dump_file (dump_base_name, ".03.addressof"); |
735a0e33 | 2100 | } |
375e2d5c | 2101 | if (gcse_dump) |
735a0e33 | 2102 | { |
375e2d5c | 2103 | clean_dump_file (".04.gcse"); |
735a0e33 | 2104 | if (graph_dump_format != no_graph) |
375e2d5c | 2105 | clean_graph_dump_file (dump_base_name, ".04.gcse"); |
735a0e33 | 2106 | } |
4291d9c8 | 2107 | if (loop_dump) |
735a0e33 | 2108 | { |
375e2d5c | 2109 | clean_dump_file (".05.loop"); |
735a0e33 | 2110 | if (graph_dump_format != no_graph) |
375e2d5c | 2111 | clean_graph_dump_file (dump_base_name, ".05.loop"); |
735a0e33 | 2112 | } |
4291d9c8 | 2113 | if (cse2_dump) |
735a0e33 | 2114 | { |
375e2d5c | 2115 | clean_dump_file (".06.cse2"); |
735a0e33 | 2116 | if (graph_dump_format != no_graph) |
375e2d5c | 2117 | clean_graph_dump_file (dump_base_name, ".06.cse2"); |
735a0e33 | 2118 | } |
0d332add | 2119 | if (branch_prob_dump) |
735a0e33 | 2120 | { |
375e2d5c | 2121 | clean_dump_file (".07.bp"); |
735a0e33 | 2122 | if (graph_dump_format != no_graph) |
375e2d5c | 2123 | clean_graph_dump_file (dump_base_name, ".07.bp"); |
735a0e33 | 2124 | } |
4291d9c8 | 2125 | if (flow_dump) |
735a0e33 | 2126 | { |
375e2d5c | 2127 | clean_dump_file (".08.flow"); |
735a0e33 | 2128 | if (graph_dump_format != no_graph) |
375e2d5c | 2129 | clean_graph_dump_file (dump_base_name, ".08.flow"); |
735a0e33 | 2130 | } |
4291d9c8 | 2131 | if (combine_dump) |
735a0e33 | 2132 | { |
375e2d5c | 2133 | clean_dump_file (".09.combine"); |
735a0e33 | 2134 | if (graph_dump_format != no_graph) |
375e2d5c | 2135 | clean_graph_dump_file (dump_base_name, ".09.combine"); |
735a0e33 | 2136 | } |
8c660648 | 2137 | if (regmove_dump) |
735a0e33 | 2138 | { |
375e2d5c | 2139 | clean_dump_file (".10.regmove"); |
735a0e33 | 2140 | if (graph_dump_format != no_graph) |
375e2d5c | 2141 | clean_graph_dump_file (dump_base_name, ".10.regmove"); |
735a0e33 | 2142 | } |
375e2d5c | 2143 | #ifdef INSN_SCHEDULING |
4291d9c8 | 2144 | if (sched_dump) |
735a0e33 | 2145 | { |
375e2d5c | 2146 | clean_dump_file (".11.sched"); |
735a0e33 | 2147 | if (graph_dump_format != no_graph) |
375e2d5c | 2148 | clean_graph_dump_file (dump_base_name, ".11.sched"); |
735a0e33 | 2149 | } |
375e2d5c | 2150 | #endif |
4291d9c8 | 2151 | if (local_reg_dump) |
735a0e33 | 2152 | { |
375e2d5c | 2153 | clean_dump_file (".12.lreg"); |
735a0e33 | 2154 | if (graph_dump_format != no_graph) |
375e2d5c | 2155 | clean_graph_dump_file (dump_base_name, ".12.lreg"); |
735a0e33 | 2156 | } |
4291d9c8 | 2157 | if (global_reg_dump) |
735a0e33 | 2158 | { |
375e2d5c | 2159 | clean_dump_file (".13.greg"); |
735a0e33 | 2160 | if (graph_dump_format != no_graph) |
375e2d5c | 2161 | clean_graph_dump_file (dump_base_name, ".13.greg"); |
735a0e33 | 2162 | } |
e881bb1b RH |
2163 | if (flow2_dump) |
2164 | { | |
375e2d5c | 2165 | clean_dump_file (".14.flow2"); |
e881bb1b | 2166 | if (graph_dump_format != no_graph) |
375e2d5c | 2167 | clean_graph_dump_file (dump_base_name, ".14.flow2"); |
e881bb1b | 2168 | } |
375e2d5c | 2169 | #ifdef HAVE_peephole2 |
ede7cd44 RH |
2170 | if (peephole2_dump) |
2171 | { | |
375e2d5c | 2172 | clean_dump_file (".15.peephole2"); |
ede7cd44 | 2173 | if (graph_dump_format != no_graph) |
375e2d5c | 2174 | clean_graph_dump_file (dump_base_name, ".15.peephole2"); |
ede7cd44 | 2175 | } |
375e2d5c RH |
2176 | #endif |
2177 | #ifdef INSN_SCHEDULING | |
4291d9c8 | 2178 | if (sched2_dump) |
735a0e33 | 2179 | { |
375e2d5c | 2180 | clean_dump_file (".16.sched2"); |
735a0e33 | 2181 | if (graph_dump_format != no_graph) |
375e2d5c | 2182 | clean_graph_dump_file (dump_base_name, ".16.sched2"); |
735a0e33 | 2183 | } |
375e2d5c | 2184 | #endif |
4291d9c8 | 2185 | if (jump2_opt_dump) |
735a0e33 | 2186 | { |
375e2d5c | 2187 | clean_dump_file (".17.jump2"); |
735a0e33 | 2188 | if (graph_dump_format != no_graph) |
375e2d5c | 2189 | clean_graph_dump_file (dump_base_name, ".17.jump2"); |
735a0e33 | 2190 | } |
375e2d5c RH |
2191 | #ifdef MACHINE_DEPENDENT_REORG |
2192 | if (mach_dep_reorg_dump) | |
735a0e33 | 2193 | { |
375e2d5c | 2194 | clean_dump_file (".18.mach"); |
735a0e33 | 2195 | if (graph_dump_format != no_graph) |
375e2d5c | 2196 | clean_graph_dump_file (dump_base_name, ".18.mach"); |
735a0e33 | 2197 | } |
bd334356 | 2198 | #endif |
375e2d5c RH |
2199 | #ifdef DELAY_SLOTS |
2200 | if (dbr_sched_dump) | |
735a0e33 | 2201 | { |
375e2d5c | 2202 | clean_dump_file (".19.dbr"); |
735a0e33 | 2203 | if (graph_dump_format != no_graph) |
375e2d5c | 2204 | clean_graph_dump_file (dump_base_name, ".19.dbr"); |
735a0e33 | 2205 | } |
375e2d5c | 2206 | #endif |
4291d9c8 | 2207 | #ifdef STACK_REGS |
4291d9c8 | 2208 | if (stack_reg_dump) |
735a0e33 | 2209 | { |
375e2d5c | 2210 | clean_dump_file (".20.stack"); |
735a0e33 | 2211 | if (graph_dump_format != no_graph) |
375e2d5c | 2212 | clean_graph_dump_file (dump_base_name, ".20.stack"); |
735a0e33 | 2213 | } |
4291d9c8 RS |
2214 | #endif |
2215 | ||
2216 | /* Open assembler code output file. */ | |
2217 | ||
1fe65c00 PB |
2218 | if (flag_syntax_only) |
2219 | asm_out_file = NULL; | |
4291d9c8 RS |
2220 | else |
2221 | { | |
1fe65c00 | 2222 | if (! name_specified && asm_file_name == 0) |
4291d9c8 RS |
2223 | asm_out_file = stdout; |
2224 | else | |
1fe65c00 | 2225 | { |
1fe65c00 | 2226 | if (asm_file_name == 0) |
e7749837 RH |
2227 | { |
2228 | int len = strlen (dump_base_name); | |
2229 | char *dumpname = (char *) xmalloc (len + 6); | |
2230 | memcpy (dumpname, dump_base_name, len + 1); | |
2231 | strip_off_ending (dumpname, len); | |
2232 | strcat (dumpname, ".s"); | |
2233 | asm_file_name = dumpname; | |
2234 | } | |
1fe65c00 PB |
2235 | if (!strcmp (asm_file_name, "-")) |
2236 | asm_out_file = stdout; | |
2237 | else | |
2238 | asm_out_file = fopen (asm_file_name, "w"); | |
2239 | if (asm_out_file == 0) | |
2240 | pfatal_with_name (asm_file_name); | |
2241 | } | |
4291d9c8 | 2242 | |
f246a305 | 2243 | #ifdef IO_BUFFER_SIZE |
1fe65c00 PB |
2244 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
2245 | _IOFBF, IO_BUFFER_SIZE); | |
f246a305 | 2246 | #endif |
1fe65c00 | 2247 | } |
f246a305 | 2248 | |
afe3d090 BS |
2249 | if (ggc_p) |
2250 | name = ggc_alloc_string (name, strlen (name)); | |
4291d9c8 RS |
2251 | input_filename = name; |
2252 | ||
18736654 RK |
2253 | /* Put an entry on the input file stack for the main input file. */ |
2254 | input_file_stack | |
2255 | = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2256 | input_file_stack->next = 0; | |
2257 | input_file_stack->name = input_filename; | |
2258 | ||
4291d9c8 RS |
2259 | /* Perform language-specific initialization. |
2260 | This may set main_input_filename. */ | |
2261 | lang_init (); | |
2262 | ||
2263 | /* If the input doesn't start with a #line, use the input name | |
2264 | as the official input file name. */ | |
2265 | if (main_input_filename == 0) | |
2266 | main_input_filename = name; | |
2267 | ||
1fe65c00 PB |
2268 | if (flag_syntax_only) |
2269 | { | |
2270 | write_symbols = NO_DEBUG; | |
2271 | profile_flag = 0; | |
2272 | profile_block_flag = 0; | |
2273 | } | |
2274 | else | |
2275 | { | |
2276 | ASM_FILE_START (asm_out_file); | |
3d5cdd42 DE |
2277 | |
2278 | #ifdef ASM_COMMENT_START | |
1fe65c00 PB |
2279 | if (flag_verbose_asm) |
2280 | { | |
2281 | /* Print the list of options in effect. */ | |
2282 | print_version (asm_out_file, ASM_COMMENT_START); | |
2283 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
3d5cdd42 | 2284 | ASM_COMMENT_START, " ", "\n"); |
1fe65c00 PB |
2285 | /* Add a blank line here so it appears in assembler output but not |
2286 | screen output. */ | |
2287 | fprintf (asm_out_file, "\n"); | |
2288 | } | |
b93a436e | 2289 | #endif |
4291d9c8 | 2290 | |
1fe65c00 | 2291 | /* Output something to inform GDB that this compilation was by GCC. */ |
4291d9c8 | 2292 | #ifndef ASM_IDENTIFY_GCC |
1fe65c00 | 2293 | fprintf (asm_out_file, "gcc2_compiled.:\n"); |
4291d9c8 | 2294 | #else |
1fe65c00 | 2295 | ASM_IDENTIFY_GCC (asm_out_file); |
4291d9c8 | 2296 | #endif |
d0d4af87 | 2297 | |
0f41302f | 2298 | /* Output something to identify which front-end produced this file. */ |
d0d4af87 | 2299 | #ifdef ASM_IDENTIFY_LANGUAGE |
1fe65c00 | 2300 | ASM_IDENTIFY_LANGUAGE (asm_out_file); |
d0d4af87 | 2301 | #endif |
1fe65c00 | 2302 | } /* ! flag_syntax_only */ |
d0d4af87 | 2303 | |
cf440348 JL |
2304 | #ifndef ASM_OUTPUT_SECTION_NAME |
2305 | if (flag_function_sections) | |
2306 | { | |
2307 | warning ("-ffunction-sections not supported for this target."); | |
2308 | flag_function_sections = 0; | |
2309 | } | |
257441db CM |
2310 | if (flag_data_sections) |
2311 | { | |
2312 | warning ("-fdata-sections not supported for this target."); | |
2313 | flag_data_sections = 0; | |
2314 | } | |
cf440348 JL |
2315 | #endif |
2316 | ||
2317 | if (flag_function_sections | |
2318 | && (profile_flag || profile_block_flag)) | |
2319 | { | |
2320 | warning ("-ffunction-sections disabled; it makes profiling impossible."); | |
2321 | flag_function_sections = 0; | |
2322 | } | |
2323 | ||
1746404b | 2324 | #ifndef OBJECT_FORMAT_ELF |
cf440348 JL |
2325 | if (flag_function_sections && write_symbols != NO_DEBUG) |
2326 | warning ("-ffunction-sections may affect debugging on some targets."); | |
1746404b | 2327 | #endif |
cf440348 | 2328 | |
b93a436e JL |
2329 | /* ??? Note: There used to be a conditional here |
2330 | to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined. | |
2331 | This was to guarantee separation between gcc_compiled. and | |
2332 | the first function, for the sake of dbx on Suns. | |
2333 | However, having the extra zero here confused the Emacs | |
2334 | code for unexec, and might confuse other programs too. | |
2335 | Therefore, I took out that change. | |
2336 | In future versions we should find another way to solve | |
2337 | that dbx problem. -- rms, 23 May 93. */ | |
ca695ac9 | 2338 | |
b93a436e JL |
2339 | /* Don't let the first function fall at the same address |
2340 | as gcc_compiled., if profiling. */ | |
2341 | if (profile_flag || profile_block_flag) | |
e5e809f4 JL |
2342 | { |
2343 | /* It's best if we can write a nop here since some | |
2344 | assemblers don't tolerate zeros in the text section. */ | |
5a26ca07 | 2345 | output_asm_insn (get_insn_template (CODE_FOR_nop, NULL), NULL_PTR); |
e5e809f4 | 2346 | } |
4291d9c8 RS |
2347 | |
2348 | /* If dbx symbol table desired, initialize writing it | |
2349 | and output the predefined types. */ | |
f246a305 RS |
2350 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2351 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2352 | TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename, |
2353 | getdecls ())); | |
2354 | #endif | |
2355 | #ifdef SDB_DEBUGGING_INFO | |
2356 | if (write_symbols == SDB_DEBUG) | |
2357 | TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename, | |
2358 | getdecls ())); | |
2359 | #endif | |
2360 | #ifdef DWARF_DEBUGGING_INFO | |
2361 | if (write_symbols == DWARF_DEBUG) | |
2362 | TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename)); | |
2363 | #endif | |
0021b564 JM |
2364 | #ifdef DWARF2_UNWIND_INFO |
2365 | if (dwarf2out_do_frame ()) | |
2366 | dwarf2out_frame_init (); | |
2367 | #endif | |
9a666dda JM |
2368 | #ifdef DWARF2_DEBUGGING_INFO |
2369 | if (write_symbols == DWARF2_DEBUG) | |
2370 | TIMEVAR (symout_time, dwarf2out_init (asm_out_file, main_input_filename)); | |
2371 | #endif | |
4291d9c8 RS |
2372 | |
2373 | /* Initialize yet another pass. */ | |
2374 | ||
b93a436e | 2375 | init_final (main_input_filename); |
0d332add | 2376 | init_branch_prob (dump_base_name); |
4291d9c8 RS |
2377 | |
2378 | start_time = get_run_time (); | |
2379 | ||
2380 | /* Call the parser, which parses the entire file | |
2381 | (calling rest_of_compilation for each function). */ | |
2382 | ||
2383 | if (yyparse () != 0) | |
453dfc78 JW |
2384 | { |
2385 | if (errorcount == 0) | |
6ed551b4 | 2386 | fnotice (stderr, "Errors detected in input file (your bison.simple is out of date)\n"); |
453dfc78 JW |
2387 | |
2388 | /* In case there were missing closebraces, | |
2389 | get us back to the global binding level. */ | |
2390 | while (! global_bindings_p ()) | |
2391 | poplevel (0, 0, 0); | |
2392 | } | |
4291d9c8 RS |
2393 | |
2394 | /* Compilation is now finished except for writing | |
2395 | what's left of the symbol table output. */ | |
2396 | ||
2397 | parse_time += get_run_time () - start_time; | |
2398 | ||
2399 | parse_time -= integration_time; | |
2400 | parse_time -= varconst_time; | |
2401 | ||
1fe65c00 PB |
2402 | if (flag_syntax_only) |
2403 | goto finish_syntax; | |
2404 | ||
4291d9c8 RS |
2405 | globals = getdecls (); |
2406 | ||
2407 | /* Really define vars that have had only a tentative definition. | |
2408 | Really output inline functions that must actually be callable | |
2409 | and have not been output so far. */ | |
2410 | ||
2411 | { | |
2412 | int len = list_length (globals); | |
4da896b2 | 2413 | tree *vec = (tree *) xmalloc (sizeof (tree) * len); |
4291d9c8 RS |
2414 | int i; |
2415 | tree decl; | |
2416 | ||
2417 | /* Process the decls in reverse order--earliest first. | |
2418 | Put them into VEC from back to front, then take out from front. */ | |
2419 | ||
2420 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
2421 | vec[len - i - 1] = decl; | |
2422 | ||
32291f94 | 2423 | wrapup_global_declarations (vec, len); |
4291d9c8 | 2424 | |
2668793e JL |
2425 | /* This must occur after the loop to output deferred functions. Else |
2426 | the profiler initializer would not be emitted if all the functions | |
2427 | in this compilation unit were deferred. | |
2428 | ||
2429 | output_func_start_profiler can not cause any additional functions or | |
2430 | data to need to be output, so it need not be in the deferred function | |
2431 | loop above. */ | |
2432 | output_func_start_profiler (); | |
2433 | ||
3d195391 MS |
2434 | /* Now that all possible functions have been output, we can dump |
2435 | the exception table. */ | |
2436 | ||
0021b564 | 2437 | output_exception_table (); |
6c3fce73 MM |
2438 | |
2439 | check_global_declarations (vec, len); | |
4da896b2 MM |
2440 | |
2441 | /* Clean up. */ | |
2442 | free (vec); | |
4291d9c8 RS |
2443 | } |
2444 | ||
4b8af8d9 JM |
2445 | /* Write out any pending weak symbol declarations. */ |
2446 | ||
2447 | weak_finish (); | |
2448 | ||
4291d9c8 | 2449 | /* Do dbx symbols */ |
f246a305 RS |
2450 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2451 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2452 | TIMEVAR (symout_time, |
2453 | { | |
2454 | dbxout_finish (asm_out_file, main_input_filename); | |
2455 | }); | |
2456 | #endif | |
2457 | ||
2458 | #ifdef DWARF_DEBUGGING_INFO | |
2459 | if (write_symbols == DWARF_DEBUG) | |
2460 | TIMEVAR (symout_time, | |
2461 | { | |
2462 | dwarfout_finish (); | |
2463 | }); | |
2464 | #endif | |
2465 | ||
0021b564 JM |
2466 | #ifdef DWARF2_UNWIND_INFO |
2467 | if (dwarf2out_do_frame ()) | |
2468 | dwarf2out_frame_finish (); | |
2469 | #endif | |
2470 | ||
9a666dda JM |
2471 | #ifdef DWARF2_DEBUGGING_INFO |
2472 | if (write_symbols == DWARF2_DEBUG) | |
2473 | TIMEVAR (symout_time, | |
2474 | { | |
2475 | dwarf2out_finish (); | |
2476 | }); | |
2477 | #endif | |
2478 | ||
4291d9c8 RS |
2479 | /* Output some stuff at end of file if nec. */ |
2480 | ||
b93a436e | 2481 | end_final (dump_base_name); |
032713aa NC |
2482 | |
2483 | if (branch_prob_dump) | |
375e2d5c | 2484 | open_dump_file (".07.bp", NULL); |
032713aa NC |
2485 | |
2486 | TIMEVAR (dump_time, end_branch_prob (rtl_dump_file)); | |
2487 | ||
2488 | if (branch_prob_dump) | |
2489 | close_dump_file (NULL, NULL_RTX); | |
2490 | ||
4291d9c8 | 2491 | #ifdef ASM_FILE_END |
b93a436e | 2492 | ASM_FILE_END (asm_out_file); |
4291d9c8 RS |
2493 | #endif |
2494 | ||
ed396e68 | 2495 | |
4291d9c8 | 2496 | /* Language-specific end of compilation actions. */ |
1fe65c00 | 2497 | finish_syntax: |
4291d9c8 RS |
2498 | lang_finish (); |
2499 | ||
2500 | /* Close the dump files. */ | |
2501 | ||
2502 | if (flag_gen_aux_info) | |
2503 | { | |
2504 | fclose (aux_info_file); | |
2505 | if (errorcount) | |
2506 | unlink (aux_info_file_name); | |
2507 | } | |
2508 | ||
4291d9c8 RS |
2509 | if (combine_dump) |
2510 | { | |
375e2d5c | 2511 | open_dump_file (".09.combine", NULL); |
032713aa NC |
2512 | TIMEVAR (dump_time, dump_combine_total_stats (rtl_dump_file)); |
2513 | close_dump_file (NULL, NULL_RTX); | |
4291d9c8 RS |
2514 | } |
2515 | ||
4291d9c8 RS |
2516 | /* Close non-debugging input and output files. Take special care to note |
2517 | whether fclose returns an error, since the pages might still be on the | |
2518 | buffer chain while the file is open. */ | |
2519 | ||
e3d1fd32 | 2520 | finish_parse (); |
e56e519d | 2521 | |
1fe65c00 PB |
2522 | if (! flag_syntax_only |
2523 | && (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)) | |
4291d9c8 RS |
2524 | fatal_io_error (asm_file_name); |
2525 | ||
735a0e33 UD |
2526 | /* Do whatever is necessary to finish printing the graphs. */ |
2527 | if (graph_dump_format != no_graph) | |
2528 | { | |
2529 | if (jump_opt_dump) | |
375e2d5c | 2530 | finish_graph_dump_file (dump_base_name, ".01.jump"); |
735a0e33 | 2531 | if (cse_dump) |
375e2d5c RH |
2532 | finish_graph_dump_file (dump_base_name, ".02.cse"); |
2533 | if (addressof_dump) | |
2534 | finish_graph_dump_file (dump_base_name, ".03.addressof"); | |
2535 | if (gcse_dump) | |
2536 | finish_graph_dump_file (dump_base_name, ".04.gcse"); | |
735a0e33 | 2537 | if (loop_dump) |
375e2d5c | 2538 | finish_graph_dump_file (dump_base_name, ".05.loop"); |
735a0e33 | 2539 | if (cse2_dump) |
375e2d5c | 2540 | finish_graph_dump_file (dump_base_name, ".06.cse2"); |
735a0e33 | 2541 | if (branch_prob_dump) |
375e2d5c | 2542 | finish_graph_dump_file (dump_base_name, ".07.bp"); |
735a0e33 | 2543 | if (flow_dump) |
375e2d5c | 2544 | finish_graph_dump_file (dump_base_name, ".08.flow"); |
735a0e33 | 2545 | if (combine_dump) |
375e2d5c | 2546 | finish_graph_dump_file (dump_base_name, ".09.combine"); |
735a0e33 | 2547 | if (regmove_dump) |
375e2d5c RH |
2548 | finish_graph_dump_file (dump_base_name, ".10.regmove"); |
2549 | #ifdef INSN_SCHEDULING | |
735a0e33 | 2550 | if (sched_dump) |
375e2d5c RH |
2551 | finish_graph_dump_file (dump_base_name, ".11.sched"); |
2552 | #endif | |
735a0e33 | 2553 | if (local_reg_dump) |
375e2d5c | 2554 | finish_graph_dump_file (dump_base_name, ".12.lreg"); |
735a0e33 | 2555 | if (global_reg_dump) |
375e2d5c RH |
2556 | finish_graph_dump_file (dump_base_name, ".13.greg"); |
2557 | if (flow2_dump) | |
2558 | finish_graph_dump_file (dump_base_name, ".14.flow2"); | |
2559 | #ifdef HAVE_peephole2 | |
78327a73 | 2560 | if (flow2_dump) |
375e2d5c RH |
2561 | finish_graph_dump_file (dump_base_name, ".15.peephole2"); |
2562 | #endif | |
2563 | #ifdef INSN_SCHEDULING | |
735a0e33 | 2564 | if (sched2_dump) |
375e2d5c RH |
2565 | finish_graph_dump_file (dump_base_name, ".16.sched2"); |
2566 | #endif | |
735a0e33 | 2567 | if (jump2_opt_dump) |
375e2d5c RH |
2568 | finish_graph_dump_file (dump_base_name, ".17.jump2"); |
2569 | #ifdef MACHINE_DEPENDENT_REORG | |
2570 | if (mach_dep_reorg_dump) | |
2571 | finish_graph_dump_file (dump_base_name, ".18.mach"); | |
2572 | #endif | |
735a0e33 UD |
2573 | #ifdef DELAY_SLOTS |
2574 | if (dbr_sched_dump) | |
375e2d5c | 2575 | finish_graph_dump_file (dump_base_name, ".19.dbr"); |
735a0e33 | 2576 | #endif |
735a0e33 UD |
2577 | #ifdef STACK_REGS |
2578 | if (stack_reg_dump) | |
375e2d5c | 2579 | finish_graph_dump_file (dump_base_name, ".20.stack"); |
735a0e33 UD |
2580 | #endif |
2581 | } | |
2582 | ||
ed396e68 BS |
2583 | /* Free up memory for the benefit of leak detectors. */ |
2584 | free_reg_info (); | |
2585 | ||
4291d9c8 RS |
2586 | /* Print the times. */ |
2587 | ||
2588 | if (! quiet_flag) | |
2589 | { | |
0a25f1f5 RH |
2590 | all_time = get_run_time (); |
2591 | ||
4291d9c8 | 2592 | fprintf (stderr,"\n"); |
ca695ac9 | 2593 | |
0a25f1f5 | 2594 | print_time ("parse", parse_time); |
b93a436e JL |
2595 | print_time ("integration", integration_time); |
2596 | print_time ("jump", jump_time); | |
2597 | print_time ("cse", cse_time); | |
7506f491 | 2598 | print_time ("gcse", gcse_time); |
b93a436e JL |
2599 | print_time ("loop", loop_time); |
2600 | print_time ("cse2", cse2_time); | |
2601 | print_time ("branch-prob", branch_prob_time); | |
2602 | print_time ("flow", flow_time); | |
2603 | print_time ("combine", combine_time); | |
2604 | print_time ("regmove", regmove_time); | |
375e2d5c | 2605 | #ifdef INSN_SCHEDULING |
b93a436e | 2606 | print_time ("sched", sched_time); |
375e2d5c | 2607 | #endif |
b93a436e JL |
2608 | print_time ("local-alloc", local_alloc_time); |
2609 | print_time ("global-alloc", global_alloc_time); | |
e881bb1b | 2610 | print_time ("flow2", flow2_time); |
375e2d5c RH |
2611 | #ifdef HAVE_peephole2 |
2612 | print_time ("peephole2", peephole2_time); | |
2613 | #endif | |
2614 | #ifdef INSN_SCHEDULING | |
b93a436e | 2615 | print_time ("sched2", sched2_time); |
375e2d5c | 2616 | #endif |
bd334356 | 2617 | #ifdef DELAY_SLOTS |
b93a436e | 2618 | print_time ("dbranch", dbr_sched_time); |
bd334356 | 2619 | #endif |
b93a436e | 2620 | print_time ("shorten-branch", shorten_branch_time); |
375e2d5c | 2621 | #ifdef STACK_REGS |
b93a436e | 2622 | print_time ("stack-reg", stack_reg_time); |
375e2d5c | 2623 | #endif |
b93a436e JL |
2624 | print_time ("final", final_time); |
2625 | print_time ("varconst", varconst_time); | |
2626 | print_time ("symout", symout_time); | |
2627 | print_time ("dump", dump_time); | |
375e2d5c RH |
2628 | if (ggc_p) |
2629 | print_time ("gc", gc_time); | |
4291d9c8 RS |
2630 | } |
2631 | } | |
2632 | \f | |
2633 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
2634 | and TYPE_DECL nodes. | |
2635 | ||
ef6748cb MM |
2636 | This does nothing for local (non-static) variables, unless the |
2637 | variable is a register variable with an ASMSPEC. In that case, or | |
2638 | if the variable is not an automatice, it sets up the RTL and | |
2639 | outputs any assembler code (label definition, storage allocation | |
2640 | and initialization). | |
4291d9c8 RS |
2641 | |
2642 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2643 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2644 | if this declaration is not within a function. */ | |
2645 | ||
2646 | void | |
2647 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
2648 | tree decl; | |
87e11268 | 2649 | const char *asmspec; |
4291d9c8 RS |
2650 | int top_level; |
2651 | int at_end; | |
2652 | { | |
2653 | /* Declarations of variables, and of functions defined elsewhere. */ | |
2654 | ||
928eb380 RS |
2655 | /* The most obvious approach, to put an #ifndef around where |
2656 | this macro is used, doesn't work since it's inside a macro call. */ | |
2657 | #ifndef ASM_FINISH_DECLARE_OBJECT | |
2658 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) | |
2659 | #endif | |
2660 | ||
4291d9c8 RS |
2661 | /* Forward declarations for nested functions are not "external", |
2662 | but we need to treat them as if they were. */ | |
216d5cdd | 2663 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 RS |
2664 | || TREE_CODE (decl) == FUNCTION_DECL) |
2665 | TIMEVAR (varconst_time, | |
2666 | { | |
2667 | make_decl_rtl (decl, asmspec, top_level); | |
9a9a9643 RS |
2668 | /* Initialized extern variable exists to be replaced |
2669 | with its value, or represents something that will be | |
2670 | output in another file. */ | |
6dbf678a | 2671 | if (! (TREE_CODE (decl) == VAR_DECL |
9a9a9643 RS |
2672 | && DECL_EXTERNAL (decl) && TREE_READONLY (decl) |
2673 | && DECL_INITIAL (decl) != 0 | |
5b272d50 | 2674 | && DECL_INITIAL (decl) != error_mark_node)) |
6dbf678a RS |
2675 | /* Don't output anything |
2676 | when a tentative file-scope definition is seen. | |
2677 | But at end of compilation, do output code for them. */ | |
2678 | if (! (! at_end && top_level | |
2679 | && (DECL_INITIAL (decl) == 0 | |
9a9a9643 | 2680 | || DECL_INITIAL (decl) == error_mark_node))) |
8380e2f2 | 2681 | assemble_variable (decl, top_level, at_end, 0); |
b93a436e | 2682 | if (decl == last_assemble_variable_decl) |
5e10b3cc RS |
2683 | { |
2684 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2685 | top_level, at_end); | |
2686 | } | |
4291d9c8 | 2687 | }); |
216d5cdd | 2688 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2689 | { |
2690 | if (decode_reg_name (asmspec) >= 0) | |
2691 | { | |
2692 | DECL_RTL (decl) = 0; | |
2693 | make_decl_rtl (decl, asmspec, top_level); | |
2694 | } | |
2695 | else | |
2696 | error ("invalid register name `%s' for register variable", asmspec); | |
2697 | } | |
f246a305 RS |
2698 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2699 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2700 | && TREE_CODE (decl) == TYPE_DECL) | |
4291d9c8 RS |
2701 | TIMEVAR (symout_time, dbxout_symbol (decl, 0)); |
2702 | #endif | |
2703 | #ifdef SDB_DEBUGGING_INFO | |
2704 | else if (write_symbols == SDB_DEBUG && top_level | |
2705 | && TREE_CODE (decl) == TYPE_DECL) | |
2706 | TIMEVAR (symout_time, sdbout_symbol (decl, 0)); | |
2707 | #endif | |
2708 | } | |
2709 | ||
2710 | /* Called after finishing a record, union or enumeral type. */ | |
2711 | ||
2712 | void | |
2713 | rest_of_type_compilation (type, toplev) | |
114791ea | 2714 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO) |
4291d9c8 RS |
2715 | tree type; |
2716 | int toplev; | |
114791ea KG |
2717 | #else |
2718 | tree type ATTRIBUTE_UNUSED; | |
2719 | int toplev ATTRIBUTE_UNUSED; | |
2720 | #endif | |
4291d9c8 | 2721 | { |
f246a305 RS |
2722 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2723 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
4291d9c8 RS |
2724 | TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev)); |
2725 | #endif | |
2726 | #ifdef SDB_DEBUGGING_INFO | |
2727 | if (write_symbols == SDB_DEBUG) | |
2728 | TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev)); | |
2729 | #endif | |
2730 | } | |
2731 | ||
de23a892 MM |
2732 | /* DECL is an inline function, whose body is present, but which is not |
2733 | being output at this point. (We're putting that off until we need | |
2734 | to do it.) If there are any actions that need to take place, | |
2735 | including the emission of debugging information for the function, | |
2736 | this is where they should go. This function may be called by | |
2737 | language-dependent code for front-ends that do not even generate | |
2738 | RTL for functions that don't need to be put out. */ | |
2739 | ||
2740 | void | |
2741 | note_deferral_of_defined_inline_function (decl) | |
2742 | tree decl; | |
2743 | { | |
2744 | #ifdef DWARF_DEBUGGING_INFO | |
2745 | /* Generate the DWARF info for the "abstract" instance of a function | |
2746 | which we may later generate inlined and/or out-of-line instances | |
2747 | of. */ | |
2748 | if (write_symbols == DWARF_DEBUG) | |
2749 | { | |
2750 | /* The front-end may not have set CURRENT_FUNCTION_DECL, but the | |
2751 | DWARF code expects it to be set in this case. Intuitively, | |
2752 | DECL is the function we just finished defining, so setting | |
2753 | CURRENT_FUNCTION_DECL is sensible. */ | |
2754 | tree saved_cfd = current_function_decl; | |
2755 | current_function_decl = decl; | |
2756 | ||
2757 | /* Let the DWARF code do its work. */ | |
2758 | set_decl_abstract_flags (decl, 1); | |
2759 | dwarfout_file_scope_decl (decl, 0); | |
2760 | set_decl_abstract_flags (decl, 0); | |
2761 | ||
2762 | /* Reset CURRENT_FUNCTION_DECL. */ | |
2763 | current_function_decl = saved_cfd; | |
2764 | } | |
2765 | #endif | |
2766 | } | |
2767 | ||
4291d9c8 RS |
2768 | /* This is called from finish_function (within yyparse) |
2769 | after each top-level definition is parsed. | |
2770 | It is supposed to compile that function or variable | |
2771 | and output the assembler code for it. | |
2772 | After we return, the tree storage is freed. */ | |
2773 | ||
2774 | void | |
2775 | rest_of_compilation (decl) | |
2776 | tree decl; | |
2777 | { | |
2778 | register rtx insns; | |
2779 | int start_time = get_run_time (); | |
2780 | int tem; | |
ab40ad2b | 2781 | int failure = 0; |
c4403371 | 2782 | int rebuild_label_notes_after_reload; |
4291d9c8 | 2783 | |
aeeeda03 MM |
2784 | /* First, remove any notes we don't need. That will make iterating |
2785 | over the instruction sequence faster, and allow the garbage | |
2786 | collector to reclaim the memory used by the notes. */ | |
2787 | remove_unncessary_notes (); | |
2788 | ||
e619323d DM |
2789 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK |
2790 | tree in sensible shape. So, we just recalculate it here. */ | |
01d939e8 | 2791 | if (cfun->x_whole_function_mode_p) |
e619323d DM |
2792 | { |
2793 | find_loop_tree_blocks (); | |
2794 | unroll_block_trees (); | |
2795 | } | |
2796 | ||
4291d9c8 RS |
2797 | /* If we are reconsidering an inline function |
2798 | at the end of compilation, skip the stuff for making it inline. */ | |
2799 | ||
2800 | if (DECL_SAVED_INSNS (decl) == 0) | |
2801 | { | |
956d6950 | 2802 | int inlinable = 0; |
14a774a9 | 2803 | tree parent; |
dff01034 | 2804 | const char *lose; |
4291d9c8 | 2805 | |
14a774a9 RK |
2806 | /* If this is nested inside an inlined external function, pretend |
2807 | it was only declared. Since we cannot inline such functions, | |
2808 | generating code for this one is not only not necessary but will | |
2809 | confuse some debugging output writers. */ | |
2810 | for (parent = DECL_CONTEXT (current_function_decl); | |
140b60b4 MM |
2811 | parent != NULL_TREE; |
2812 | parent = get_containing_scope (parent)) | |
3e038608 MM |
2813 | if (TREE_CODE (parent) == FUNCTION_DECL |
2814 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
14a774a9 RK |
2815 | { |
2816 | DECL_INITIAL (decl) = 0; | |
2817 | goto exit_rest_of_compilation; | |
2818 | } | |
2819 | ||
4291d9c8 | 2820 | /* If requested, consider whether to make this function inline. */ |
9deaf1b1 | 2821 | if (DECL_INLINE (decl) || flag_inline_functions) |
4291d9c8 RS |
2822 | TIMEVAR (integration_time, |
2823 | { | |
2824 | lose = function_cannot_inline_p (decl); | |
caa0eccd | 2825 | if (lose || ! optimize) |
4291d9c8 | 2826 | { |
9deaf1b1 | 2827 | if (warn_inline && DECL_INLINE (decl)) |
4291d9c8 | 2828 | warning_with_decl (decl, lose); |
9548c538 | 2829 | DECL_ABSTRACT_ORIGIN (decl) = 0; |
46dbb914 RS |
2830 | /* Don't really compile an extern inline function. |
2831 | If we can't make it inline, pretend | |
2832 | it was only declared. */ | |
2833 | if (DECL_EXTERNAL (decl)) | |
27937f46 RS |
2834 | { |
2835 | DECL_INITIAL (decl) = 0; | |
2836 | goto exit_rest_of_compilation; | |
2837 | } | |
4291d9c8 RS |
2838 | } |
2839 | else | |
9deaf1b1 RK |
2840 | /* ??? Note that this has the effect of making it look |
2841 | like "inline" was specified for a function if we choose | |
2842 | to inline it. This isn't quite right, but it's | |
2843 | probably not worth the trouble to fix. */ | |
956d6950 | 2844 | inlinable = DECL_INLINE (decl) = 1; |
4291d9c8 RS |
2845 | }); |
2846 | ||
2847 | insns = get_insns (); | |
2848 | ||
2849 | /* Dump the rtl code if we are dumping rtl. */ | |
2850 | ||
2851 | if (rtl_dump) | |
032713aa | 2852 | { |
375e2d5c | 2853 | open_dump_file (".00.rtl", decl_printable_name (decl, 2)); |
032713aa NC |
2854 | |
2855 | if (DECL_SAVED_INSNS (decl)) | |
2856 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
2857 | ||
2858 | close_dump_file (print_rtl, insns); | |
2859 | } | |
4291d9c8 RS |
2860 | |
2861 | /* If function is inline, and we don't yet know whether to | |
2862 | compile it by itself, defer decision till end of compilation. | |
2863 | finish_compilation will call rest_of_compilation again | |
16411ea6 | 2864 | for those functions that need to be output. Also defer those |
36edd3cc BS |
2865 | functions that we are supposed to defer. */ |
2866 | ||
956d6950 | 2867 | if (inlinable) |
36edd3cc | 2868 | DECL_DEFER_OUTPUT (decl) = 1; |
e9a25f70 | 2869 | |
36edd3cc BS |
2870 | if (DECL_DEFER_OUTPUT (decl) |
2871 | || (DECL_INLINE (decl) | |
2872 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
2873 | && ! flag_keep_inline_functions) | |
2874 | || DECL_EXTERNAL (decl)))) | |
4291d9c8 | 2875 | { |
951af26e JM |
2876 | DECL_DEFER_OUTPUT (decl) = 1; |
2877 | ||
a701efba MM |
2878 | /* If -Wreturn-type, we have to do a bit of compilation. |
2879 | However, if we just fall through we will call | |
2880 | save_for_inline_copying() which results in excessive | |
2881 | memory use. Instead, we just want to call | |
2882 | jump_optimize() to figure out whether or not we can fall | |
2883 | off the end of the function; we do the minimum amount of | |
2884 | work necessary to make that safe. And, we set optimize | |
2885 | to zero to keep jump_optimize from working too hard. */ | |
2886 | if (warn_return_type) | |
937522b5 | 2887 | { |
a701efba MM |
2888 | int saved_optimize = optimize; |
2889 | optimize = 0; | |
2890 | find_exception_handler_labels (); | |
14bf4a33 MM |
2891 | jump_optimize (get_insns(), !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, |
2892 | !JUMP_AFTER_REGSCAN); | |
a701efba MM |
2893 | optimize = saved_optimize; |
2894 | } | |
2895 | ||
de23a892 | 2896 | note_deferral_of_defined_inline_function (decl); |
a701efba | 2897 | TIMEVAR (integration_time, save_for_inline_nocopy (decl)); |
49ad7cfa | 2898 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; |
a701efba | 2899 | goto exit_rest_of_compilation; |
4291d9c8 RS |
2900 | } |
2901 | ||
b8471b65 | 2902 | /* If specified extern inline but we aren't inlining it, we are |
1cbe6eb6 JM |
2903 | done. This goes for anything that gets here with DECL_EXTERNAL |
2904 | set, not just things with DECL_INLINE. */ | |
2905 | if (DECL_EXTERNAL (decl)) | |
b8471b65 RK |
2906 | goto exit_rest_of_compilation; |
2907 | } | |
07af9d16 | 2908 | |
49ad7cfa BS |
2909 | /* Initialize some variables used by the optimizers. */ |
2910 | init_function_for_compilation (); | |
2911 | ||
951af26e JM |
2912 | if (! DECL_DEFER_OUTPUT (decl)) |
2913 | TREE_ASM_WRITTEN (decl) = 1; | |
4291d9c8 RS |
2914 | |
2915 | /* Now that integrate will no longer see our rtl, we need not distinguish | |
2916 | between the return value of this function and the return value of called | |
2917 | functions. */ | |
2918 | rtx_equal_function_value_matters = 0; | |
2919 | ||
32235b30 RS |
2920 | /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */ |
2921 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
4291d9c8 RS |
2922 | { |
2923 | goto exit_rest_of_compilation; | |
2924 | } | |
2925 | ||
154bba13 TT |
2926 | /* Emit code to get eh context, if needed. */ |
2927 | emit_eh_context (); | |
2928 | ||
4291d9c8 RS |
2929 | #ifdef FINALIZE_PIC |
2930 | /* If we are doing position-independent code generation, now | |
2931 | is the time to output special prologues and epilogues. | |
2932 | We do not want to do this earlier, because it just clutters | |
2933 | up inline functions with meaningless insns. */ | |
2934 | if (flag_pic) | |
2935 | FINALIZE_PIC; | |
2936 | #endif | |
2937 | ||
89418a92 BK |
2938 | /* From now on, allocate rtl in current_obstack, not in saveable_obstack. |
2939 | Note that that may have been done above, in save_for_inline_copying. | |
2940 | The call to resume_temporary_allocation near the end of this function | |
2941 | goes back to the usual state of affairs. This must be done after | |
2942 | we've built up any unwinders for exception handling, and done | |
2943 | the FINALIZE_PIC work, if necessary. */ | |
2944 | ||
2945 | rtl_in_current_obstack (); | |
3d195391 | 2946 | |
4291d9c8 RS |
2947 | insns = get_insns (); |
2948 | ||
2949 | /* Copy any shared structure that should not be shared. */ | |
2950 | ||
2951 | unshare_all_rtl (insns); | |
2952 | ||
5a4f6418 AM |
2953 | init_EXPR_INSN_LIST_cache (); |
2954 | ||
c9ec4f99 DM |
2955 | #ifdef SETJMP_VIA_SAVE_AREA |
2956 | /* This must be performed before virutal register instantiation. */ | |
2957 | if (current_function_calls_alloca) | |
2958 | optimize_save_area_alloca (insns); | |
2959 | #endif | |
2960 | ||
4291d9c8 RS |
2961 | /* Instantiate all virtual registers. */ |
2962 | ||
2963 | instantiate_virtual_regs (current_function_decl, get_insns ()); | |
2964 | ||
2965 | /* See if we have allocated stack slots that are not directly addressable. | |
2966 | If so, scan all the insns and create explicit address computation | |
2967 | for all references to such slots. */ | |
0a25f1f5 | 2968 | /* fixup_stack_slots (); */ |
4291d9c8 | 2969 | |
3d195391 MS |
2970 | /* Find all the EH handlers. */ |
2971 | find_exception_handler_labels (); | |
2972 | ||
02db399d RH |
2973 | if (jump_opt_dump) |
2974 | open_dump_file (".01.jump", decl_printable_name (decl, 2)); | |
2975 | ||
cc4e79d8 JL |
2976 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields |
2977 | are initialized and to compute whether control can drop off the end | |
2978 | of the function. */ | |
2979 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
14bf4a33 MM |
2980 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, |
2981 | JUMP_AFTER_REGSCAN)); | |
4291d9c8 | 2982 | |
673b5311 MM |
2983 | /* Jump optimization, and the removal of NULL pointer checks, may |
2984 | have reduced the number of instructions substantially. CSE, and | |
2985 | future passes, allocate arrays whose dimensions involve the maximum | |
2986 | instruction UID, so if we can reduce the maximum UID we'll save big on | |
2987 | memory. */ | |
2988 | renumber_insns (rtl_dump_file); | |
2989 | ||
2990 | /* Dump rtl code after jump, if we are doing that. */ | |
2991 | if (jump_opt_dump) | |
2992 | close_dump_file (print_rtl, insns); | |
2993 | ||
32235b30 | 2994 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
951af26e | 2995 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
32235b30 RS |
2996 | goto exit_rest_of_compilation; |
2997 | ||
dfdb644f | 2998 | /* Try to identify useless null pointer tests and delete them. */ |
b6d24183 | 2999 | if (flag_delete_null_pointer_checks) |
dfdb644f JL |
3000 | TIMEVAR (jump_time, delete_null_pointer_checks (get_insns ())); |
3001 | ||
a3770a81 RH |
3002 | if (ggc_p) |
3003 | ggc_collect (); | |
3004 | ||
4291d9c8 RS |
3005 | /* Perform common subexpression elimination. |
3006 | Nonzero value from `cse_main' means that jumps were simplified | |
3007 | and some code may now be unreachable, so do | |
3008 | jump optimization again. */ | |
3009 | ||
4291d9c8 RS |
3010 | if (optimize > 0) |
3011 | { | |
032713aa | 3012 | if (cse_dump) |
375e2d5c | 3013 | open_dump_file (".02.cse", decl_printable_name (decl, 2)); |
032713aa | 3014 | |
4291d9c8 RS |
3015 | TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1)); |
3016 | ||
3017 | if (flag_thread_jumps) | |
6f606d63 | 3018 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1)); |
4291d9c8 RS |
3019 | |
3020 | TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (), | |
032713aa | 3021 | 0, rtl_dump_file)); |
c5c76735 JL |
3022 | /* If we are not running the second CSE pass, then we are no longer |
3023 | expecting CSE to be run. */ | |
3024 | cse_not_expected = !flag_rerun_cse_after_loop; | |
3025 | ||
534bfae4 | 3026 | if (tem || optimize > 1) |
14bf4a33 MM |
3027 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3028 | !JUMP_NOOP_MOVES, | |
3029 | !JUMP_AFTER_REGSCAN)); | |
dfdb644f | 3030 | |
e48a7fbe JL |
3031 | /* Run this after jump optmizations remove all the unreachable code |
3032 | so that unreachable code will not keep values live. */ | |
3033 | TIMEVAR (cse_time, delete_trivially_dead_insns (insns, max_reg_num ())); | |
3034 | ||
dfdb644f | 3035 | /* Try to identify useless null pointer tests and delete them. */ |
b6d24183 | 3036 | if (flag_delete_null_pointer_checks) |
dfdb644f | 3037 | TIMEVAR (jump_time, delete_null_pointer_checks (get_insns ())); |
4291d9c8 | 3038 | |
673b5311 MM |
3039 | /* The second pass of jump optimization is likely to have |
3040 | removed a bunch more instructions. */ | |
3041 | renumber_insns (rtl_dump_file); | |
735a0e33 | 3042 | |
673b5311 | 3043 | /* Dump rtl code after cse, if we are doing that. */ |
032713aa | 3044 | if (cse_dump) |
735a0e33 UD |
3045 | { |
3046 | close_dump_file (print_rtl, insns); | |
3047 | if (graph_dump_format != no_graph) | |
375e2d5c | 3048 | print_rtl_graph_with_bb (dump_base_name, ".02.cse", insns); |
735a0e33 | 3049 | } |
032713aa | 3050 | } |
4291d9c8 | 3051 | |
e9a25f70 JL |
3052 | purge_addressof (insns); |
3053 | reg_scan (insns, max_reg_num (), 1); | |
3054 | ||
3055 | if (addressof_dump) | |
735a0e33 | 3056 | { |
375e2d5c | 3057 | dump_rtl (".03.addressof", decl, print_rtl, insns); |
735a0e33 | 3058 | if (graph_dump_format != no_graph) |
375e2d5c | 3059 | print_rtl_graph_with_bb (dump_base_name, ".03.addressof", insns); |
735a0e33 UD |
3060 | } |
3061 | ||
a3770a81 RH |
3062 | if (ggc_p) |
3063 | ggc_collect (); | |
3064 | ||
7506f491 DE |
3065 | /* Perform global cse. */ |
3066 | ||
3067 | if (optimize > 0 && flag_gcse) | |
3068 | { | |
3069 | if (gcse_dump) | |
375e2d5c | 3070 | open_dump_file (".04.gcse", decl_printable_name (decl, 2)); |
735a0e33 | 3071 | |
e78d9500 JL |
3072 | TIMEVAR (gcse_time, tem = gcse_main (insns, rtl_dump_file)); |
3073 | ||
3074 | /* If gcse altered any jumps, rerun jump optimizations to clean | |
3075 | things up. */ | |
3076 | if (tem) | |
3077 | { | |
3078 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, | |
3079 | !JUMP_NOOP_MOVES, | |
3080 | !JUMP_AFTER_REGSCAN)); | |
3081 | } | |
7506f491 DE |
3082 | |
3083 | if (gcse_dump) | |
735a0e33 UD |
3084 | { |
3085 | close_dump_file (print_rtl, insns); | |
3086 | if (graph_dump_format != no_graph) | |
375e2d5c | 3087 | print_rtl_graph_with_bb (dump_base_name, ".04.gcse", insns); |
735a0e33 | 3088 | } |
a3770a81 RH |
3089 | |
3090 | if (ggc_p) | |
3091 | ggc_collect (); | |
7506f491 | 3092 | } |
4291d9c8 RS |
3093 | /* Move constant computations out of loops. */ |
3094 | ||
3095 | if (optimize > 0) | |
3096 | { | |
032713aa | 3097 | if (loop_dump) |
375e2d5c | 3098 | open_dump_file (".05.loop", decl_printable_name (decl, 2)); |
032713aa NC |
3099 | |
3100 | TIMEVAR | |
3101 | (loop_time, | |
3102 | { | |
3103 | if (flag_rerun_loop_opt) | |
4291d9c8 | 3104 | { |
032713aa NC |
3105 | /* We only want to perform unrolling once. */ |
3106 | ||
5accd822 | 3107 | loop_optimize (insns, rtl_dump_file, 0, 0); |
032713aa | 3108 | |
c6a26dc4 JL |
3109 | |
3110 | /* The first call to loop_optimize makes some instructions | |
3111 | trivially dead. We delete those instructions now in the | |
3112 | hope that doing so will make the heuristics in loop work | |
3113 | better and possibly speed up compilation. */ | |
3114 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3115 | ||
3116 | /* The regscan pass is currently necessary as the alias | |
3117 | analysis code depends on this information. */ | |
032713aa NC |
3118 | reg_scan (insns, max_reg_num (), 1); |
3119 | } | |
5accd822 | 3120 | loop_optimize (insns, rtl_dump_file, flag_unroll_loops, 1); |
032713aa | 3121 | }); |
735a0e33 | 3122 | |
032713aa | 3123 | /* Dump rtl code after loop opt, if we are doing that. */ |
735a0e33 | 3124 | |
032713aa | 3125 | if (loop_dump) |
735a0e33 UD |
3126 | { |
3127 | close_dump_file (print_rtl, insns); | |
3128 | if (graph_dump_format != no_graph) | |
375e2d5c | 3129 | print_rtl_graph_with_bb (dump_base_name, ".05.loop", insns); |
735a0e33 | 3130 | } |
a3770a81 RH |
3131 | |
3132 | if (ggc_p) | |
3133 | ggc_collect (); | |
4291d9c8 RS |
3134 | } |
3135 | ||
4afd5254 RH |
3136 | /* ??? Well, nearly. If HAVE_conditional_arithmetic, jump_optimize |
3137 | has put off all if-conversion until "after CSE". If we put this | |
3138 | off any longer we may miss out doing if-conversion entirely. */ | |
3139 | cse_not_expected = 1; | |
3140 | ||
032713aa | 3141 | if (optimize > 0) |
c2f006ec | 3142 | { |
032713aa | 3143 | if (cse2_dump) |
375e2d5c | 3144 | open_dump_file (".06.cse2", decl_printable_name (decl, 2)); |
735a0e33 | 3145 | |
032713aa NC |
3146 | if (flag_rerun_cse_after_loop) |
3147 | { | |
3148 | /* Running another jump optimization pass before the second | |
3149 | cse pass sometimes simplifies the RTL enough to allow | |
3150 | the second CSE pass to do a better job. Jump_optimize can change | |
3151 | max_reg_num so we must rerun reg_scan afterwards. | |
3152 | ??? Rework to not call reg_scan so often. */ | |
3153 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
14bf4a33 MM |
3154 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3155 | !JUMP_NOOP_MOVES, | |
3156 | JUMP_AFTER_REGSCAN)); | |
032713aa NC |
3157 | |
3158 | TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0)); | |
3159 | TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (), | |
3160 | 1, rtl_dump_file)); | |
3161 | if (tem) | |
14bf4a33 MM |
3162 | TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, |
3163 | !JUMP_NOOP_MOVES, | |
3164 | !JUMP_AFTER_REGSCAN)); | |
032713aa | 3165 | } |
0d332add | 3166 | |
032713aa NC |
3167 | if (flag_thread_jumps) |
3168 | { | |
3169 | /* This pass of jump threading straightens out code | |
3170 | that was kinked by loop optimization. */ | |
3171 | TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0)); | |
3172 | TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0)); | |
3173 | } | |
735a0e33 | 3174 | |
032713aa | 3175 | /* Dump rtl code after cse, if we are doing that. */ |
032713aa | 3176 | if (cse2_dump) |
735a0e33 UD |
3177 | { |
3178 | close_dump_file (print_rtl, insns); | |
3179 | if (graph_dump_format != no_graph) | |
375e2d5c | 3180 | print_rtl_graph_with_bb (dump_base_name, ".06.cse2", insns); |
735a0e33 | 3181 | } |
a3770a81 RH |
3182 | |
3183 | if (ggc_p) | |
3184 | ggc_collect (); | |
032713aa | 3185 | } |
735a0e33 | 3186 | |
0d332add | 3187 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
032713aa NC |
3188 | { |
3189 | if (branch_prob_dump) | |
375e2d5c | 3190 | open_dump_file (".07.bp", decl_printable_name (decl, 2)); |
735a0e33 | 3191 | |
032713aa NC |
3192 | TIMEVAR |
3193 | (branch_prob_time, | |
3194 | { | |
3195 | branch_prob (insns, rtl_dump_file); | |
3196 | }); | |
735a0e33 | 3197 | |
032713aa | 3198 | if (branch_prob_dump) |
735a0e33 UD |
3199 | { |
3200 | close_dump_file (print_rtl, insns); | |
3201 | if (graph_dump_format != no_graph) | |
375e2d5c | 3202 | print_rtl_graph_with_bb (dump_base_name, ".07.bp", insns); |
735a0e33 | 3203 | } |
a3770a81 RH |
3204 | |
3205 | if (ggc_p) | |
3206 | ggc_collect (); | |
032713aa | 3207 | } |
735a0e33 | 3208 | |
4291d9c8 RS |
3209 | /* Now we choose between stupid (pcc-like) register allocation |
3210 | (if we got the -noreg switch and not -opt) | |
3211 | and smart register allocation. */ | |
3212 | ||
bbf9d88c | 3213 | if (optimize > 0) /* Stupid allocation probably won't work */ |
4291d9c8 RS |
3214 | obey_regdecls = 0; /* if optimizations being done. */ |
3215 | ||
3216 | regclass_init (); | |
3217 | ||
3218 | /* Print function header into flow dump now | |
3219 | because doing the flow analysis makes some of the dump. */ | |
3220 | ||
3221 | if (flow_dump) | |
375e2d5c | 3222 | open_dump_file (".08.flow", decl_printable_name (decl, 2)); |
032713aa | 3223 | |
4291d9c8 RS |
3224 | if (obey_regdecls) |
3225 | { | |
3226 | TIMEVAR (flow_time, | |
3227 | { | |
246fd41f | 3228 | regclass (insns, max_reg_num (), NULL); |
4291d9c8 | 3229 | stupid_life_analysis (insns, max_reg_num (), |
032713aa | 3230 | rtl_dump_file); |
4291d9c8 RS |
3231 | }); |
3232 | } | |
3233 | else | |
3234 | { | |
3235 | /* Do control and data flow analysis, | |
3236 | and write some of the results to dump file. */ | |
3237 | ||
5ece9746 JL |
3238 | TIMEVAR |
3239 | (flow_time, | |
3240 | { | |
359da67d | 3241 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1); |
e619323d | 3242 | calculate_loop_depth (rtl_dump_file); |
11f246f6 | 3243 | life_analysis (insns, max_reg_num (), rtl_dump_file, 1); |
5ece9746 JL |
3244 | }); |
3245 | ||
8fbe1035 | 3246 | if (warn_uninitialized || extra_warnings) |
4291d9c8 RS |
3247 | { |
3248 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
8fbe1035 ML |
3249 | if (extra_warnings) |
3250 | setjmp_args_warning (); | |
4291d9c8 RS |
3251 | } |
3252 | } | |
3253 | ||
3254 | /* Dump rtl after flow analysis. */ | |
3255 | ||
3256 | if (flow_dump) | |
735a0e33 UD |
3257 | { |
3258 | close_dump_file (print_rtl_with_bb, insns); | |
3259 | if (graph_dump_format != no_graph) | |
375e2d5c | 3260 | print_rtl_graph_with_bb (dump_base_name, ".08.flow", insns); |
735a0e33 UD |
3261 | } |
3262 | ||
a3770a81 RH |
3263 | if (ggc_p) |
3264 | ggc_collect (); | |
3265 | ||
f1db3576 JL |
3266 | /* The first life analysis pass has finished. From now on we can not |
3267 | generate any new pseudos. */ | |
3268 | no_new_pseudos = 1; | |
3269 | ||
4291d9c8 RS |
3270 | /* If -opt, try combining insns through substitution. */ |
3271 | ||
3272 | if (optimize > 0) | |
032713aa NC |
3273 | { |
3274 | TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ())); | |
735a0e33 | 3275 | |
032713aa | 3276 | /* Dump rtl code after insn combination. */ |
735a0e33 | 3277 | |
032713aa | 3278 | if (combine_dump) |
735a0e33 | 3279 | { |
375e2d5c | 3280 | dump_rtl (".09.combine", decl, print_rtl_with_bb, insns); |
735a0e33 | 3281 | if (graph_dump_format != no_graph) |
375e2d5c | 3282 | print_rtl_graph_with_bb (dump_base_name, ".09.combine", insns); |
735a0e33 | 3283 | } |
a3770a81 RH |
3284 | |
3285 | if (ggc_p) | |
3286 | ggc_collect (); | |
032713aa | 3287 | } |
8c660648 JL |
3288 | |
3289 | /* Register allocation pre-pass, to reduce number of moves | |
3290 | necessary for two-address machines. */ | |
1230327b | 3291 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) |
032713aa NC |
3292 | { |
3293 | if (regmove_dump) | |
375e2d5c | 3294 | open_dump_file (".10.regmove", decl_printable_name (decl, 2)); |
735a0e33 | 3295 | |
032713aa NC |
3296 | TIMEVAR (regmove_time, regmove_optimize (insns, max_reg_num (), |
3297 | rtl_dump_file)); | |
735a0e33 | 3298 | |
032713aa | 3299 | if (regmove_dump) |
735a0e33 UD |
3300 | { |
3301 | close_dump_file (print_rtl_with_bb, insns); | |
3302 | if (graph_dump_format != no_graph) | |
375e2d5c | 3303 | print_rtl_graph_with_bb (dump_base_name, ".10.regmove", insns); |
735a0e33 | 3304 | } |
a3770a81 RH |
3305 | |
3306 | if (ggc_p) | |
3307 | ggc_collect (); | |
032713aa | 3308 | } |
8c660648 | 3309 | |
4291d9c8 RS |
3310 | /* Print function header into sched dump now |
3311 | because doing the sched analysis makes some of the dump. */ | |
3312 | ||
375e2d5c | 3313 | #ifdef INSN_SCHEDULING |
4291d9c8 RS |
3314 | if (optimize > 0 && flag_schedule_insns) |
3315 | { | |
032713aa | 3316 | if (sched_dump) |
375e2d5c | 3317 | open_dump_file (".11.sched", decl_printable_name (decl, 2)); |
735a0e33 | 3318 | |
4291d9c8 RS |
3319 | /* Do control and data sched analysis, |
3320 | and write some of the results to dump file. */ | |
3321 | ||
032713aa | 3322 | TIMEVAR (sched_time, schedule_insns (rtl_dump_file)); |
735a0e33 | 3323 | |
032713aa | 3324 | /* Dump rtl after instruction scheduling. */ |
735a0e33 | 3325 | |
032713aa | 3326 | if (sched_dump) |
735a0e33 UD |
3327 | { |
3328 | close_dump_file (print_rtl_with_bb, insns); | |
3329 | if (graph_dump_format != no_graph) | |
375e2d5c | 3330 | print_rtl_graph_with_bb (dump_base_name, ".11.sched", insns); |
735a0e33 | 3331 | } |
a3770a81 RH |
3332 | |
3333 | if (ggc_p) | |
3334 | ggc_collect (); | |
4291d9c8 | 3335 | } |
375e2d5c | 3336 | #endif |
4291d9c8 | 3337 | |
54ff41b7 JW |
3338 | /* Determine if the current function is a leaf before running reload |
3339 | since this can impact optimizations done by the prologue and | |
3340 | epilogue thus changing register elimination offsets. */ | |
3341 | current_function_is_leaf = leaf_function_p (); | |
3342 | ||
246fd41f JH |
3343 | if (local_reg_dump) |
3344 | open_dump_file (".12.lreg", decl_printable_name (decl, 2)); | |
3345 | ||
4291d9c8 | 3346 | /* Unless we did stupid register allocation, |
3f1b9b1b JL |
3347 | allocate pseudo-regs that are used only within 1 basic block. |
3348 | ||
3349 | RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the | |
3350 | jump optimizer after register allocation and reloading are finished. */ | |
4291d9c8 RS |
3351 | |
3352 | if (!obey_regdecls) | |
3353 | TIMEVAR (local_alloc_time, | |
3354 | { | |
49c3bb12 RH |
3355 | /* We recomputed reg usage as part of updating the rest |
3356 | of life info during sched. */ | |
3357 | if (! flag_schedule_insns) | |
3358 | recompute_reg_usage (insns, ! optimize_size); | |
246fd41f | 3359 | regclass (insns, max_reg_num (), rtl_dump_file); |
c4403371 | 3360 | rebuild_label_notes_after_reload = local_alloc (); |
4291d9c8 | 3361 | }); |
3f1b9b1b | 3362 | else |
c4403371 | 3363 | rebuild_label_notes_after_reload = 0; |
4291d9c8 RS |
3364 | |
3365 | /* Dump rtl code after allocating regs within basic blocks. */ | |
3366 | ||
3367 | if (local_reg_dump) | |
032713aa | 3368 | { |
032713aa NC |
3369 | TIMEVAR (dump_time, dump_flow_info (rtl_dump_file)); |
3370 | TIMEVAR (dump_time, dump_local_alloc (rtl_dump_file)); | |
735a0e33 | 3371 | |
032713aa | 3372 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 | 3373 | if (graph_dump_format != no_graph) |
375e2d5c | 3374 | print_rtl_graph_with_bb (dump_base_name, ".12.lreg", insns); |
032713aa | 3375 | } |
4291d9c8 | 3376 | |
a3770a81 RH |
3377 | if (ggc_p) |
3378 | ggc_collect (); | |
3379 | ||
4291d9c8 | 3380 | if (global_reg_dump) |
375e2d5c | 3381 | open_dump_file (".13.greg", decl_printable_name (decl, 2)); |
4291d9c8 RS |
3382 | |
3383 | /* Unless we did stupid register allocation, | |
3384 | allocate remaining pseudo-regs, then do the reload pass | |
3385 | fixing up any insns that are invalid. */ | |
3386 | ||
3387 | TIMEVAR (global_alloc_time, | |
3388 | { | |
3389 | if (!obey_regdecls) | |
032713aa | 3390 | failure = global_alloc (rtl_dump_file); |
4291d9c8 | 3391 | else |
032713aa | 3392 | failure = reload (insns, 0, rtl_dump_file); |
4291d9c8 RS |
3393 | }); |
3394 | ||
4291d9c8 | 3395 | |
ab40ad2b RS |
3396 | if (failure) |
3397 | goto exit_rest_of_compilation; | |
3398 | ||
a3770a81 RH |
3399 | if (ggc_p) |
3400 | ggc_collect (); | |
3401 | ||
c8ed219d RK |
3402 | /* Do a very simple CSE pass over just the hard registers. */ |
3403 | if (optimize > 0) | |
3404 | reload_cse_regs (insns); | |
3405 | ||
c4403371 JL |
3406 | /* Register allocation and reloading may have turned an indirect jump into |
3407 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3408 | jumping instructions. */ | |
3409 | if (rebuild_label_notes_after_reload) | |
3410 | TIMEVAR (jump_time, rebuild_jump_labels (insns)); | |
3411 | ||
d3a923ee RH |
3412 | /* On some machines, the prologue and epilogue code, or parts thereof, |
3413 | can be represented as RTL. Doing so lets us schedule insns between | |
3414 | it and the rest of the code and also allows delayed branch | |
3415 | scheduling to operate in the epilogue. */ | |
3416 | ||
3417 | thread_prologue_and_epilogue_insns (insns); | |
3418 | ||
45c85c4e JL |
3419 | /* If optimizing and we are performing instruction scheduling after |
3420 | reload, then go ahead and split insns now since we are about to | |
3421 | recompute flow information anyway. | |
3422 | ||
3423 | reload_cse_regs may expose more splitting opportunities, expecially | |
3424 | for double-word operations. */ | |
3425 | if (optimize > 0 && flag_schedule_insns_after_reload) | |
d3a923ee | 3426 | split_all_insns (0); |
45c85c4e | 3427 | |
e881bb1b RH |
3428 | if (global_reg_dump) |
3429 | { | |
3430 | TIMEVAR (dump_time, dump_global_regs (rtl_dump_file)); | |
3431 | close_dump_file (print_rtl_with_bb, insns); | |
3432 | if (graph_dump_format != no_graph) | |
375e2d5c | 3433 | print_rtl_graph_with_bb (dump_base_name, ".13.greg", insns); |
e881bb1b RH |
3434 | } |
3435 | ||
6764d250 | 3436 | /* Re-create the death notes which were deleted during reload. */ |
e881bb1b | 3437 | if (flow2_dump) |
375e2d5c | 3438 | open_dump_file (".14.flow2", decl_printable_name (decl, 2)); |
e881bb1b | 3439 | |
6764d250 | 3440 | if (optimize) |
e881bb1b RH |
3441 | { |
3442 | TIMEVAR | |
3443 | (flow2_time, | |
3444 | { | |
359da67d | 3445 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file, 1); |
11f246f6 | 3446 | life_analysis (insns, max_reg_num (), rtl_dump_file, 1); |
e881bb1b | 3447 | }); |
a3770a81 RH |
3448 | |
3449 | if (ggc_p) | |
3450 | ggc_collect (); | |
e881bb1b | 3451 | } |
6764d250 | 3452 | |
56744d1a JL |
3453 | flow2_completed = 1; |
3454 | ||
e881bb1b | 3455 | if (flow2_dump) |
9ec36da5 | 3456 | { |
9ec36da5 | 3457 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 | 3458 | if (graph_dump_format != no_graph) |
375e2d5c | 3459 | print_rtl_graph_with_bb (dump_base_name, ".14.flow2", insns); |
9ec36da5 | 3460 | } |
e881bb1b | 3461 | |
ede7cd44 RH |
3462 | #ifdef HAVE_peephole2 |
3463 | if (optimize > 0 && flag_peephole2) | |
3464 | { | |
3465 | if (peephole2_dump) | |
375e2d5c | 3466 | open_dump_file (".15.peephole2", decl_printable_name (decl, 2)); |
ede7cd44 | 3467 | |
375e2d5c | 3468 | TIMEVAR (peephole2_time, peephole2_optimize (rtl_dump_file)); |
ede7cd44 RH |
3469 | |
3470 | if (peephole2_dump) | |
3471 | { | |
3472 | close_dump_file (print_rtl_with_bb, insns); | |
3473 | if (graph_dump_format != no_graph) | |
375e2d5c | 3474 | print_rtl_graph_with_bb (dump_base_name, ".15.peephole2", insns); |
ede7cd44 RH |
3475 | } |
3476 | } | |
3477 | #endif | |
3478 | ||
375e2d5c | 3479 | #ifdef INSN_SCHEDULING |
4291d9c8 RS |
3480 | if (optimize > 0 && flag_schedule_insns_after_reload) |
3481 | { | |
3482 | if (sched2_dump) | |
375e2d5c | 3483 | open_dump_file (".16.sched2", decl_printable_name (decl, 2)); |
4291d9c8 RS |
3484 | |
3485 | /* Do control and data sched analysis again, | |
3486 | and write some more of the results to dump file. */ | |
3487 | ||
032713aa | 3488 | TIMEVAR (sched2_time, schedule_insns (rtl_dump_file)); |
4291d9c8 RS |
3489 | |
3490 | /* Dump rtl after post-reorder instruction scheduling. */ | |
3491 | ||
3492 | if (sched2_dump) | |
735a0e33 UD |
3493 | { |
3494 | close_dump_file (print_rtl_with_bb, insns); | |
3495 | if (graph_dump_format != no_graph) | |
375e2d5c | 3496 | print_rtl_graph_with_bb (dump_base_name, ".16.sched2", insns); |
735a0e33 | 3497 | } |
a3770a81 RH |
3498 | |
3499 | if (ggc_p) | |
3500 | ggc_collect (); | |
4291d9c8 | 3501 | } |
375e2d5c | 3502 | #endif |
4291d9c8 RS |
3503 | |
3504 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3505 | current_function_uses_only_leaf_regs |
3506 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3507 | #endif |
3508 | ||
3509 | /* One more attempt to remove jumps to .+1 | |
3510 | left by dead-store-elimination. | |
3511 | Also do cross-jumping this time | |
3512 | and delete no-op move insns. */ | |
3513 | ||
3514 | if (optimize > 0) | |
3515 | { | |
14bf4a33 MM |
3516 | TIMEVAR (jump_time, jump_optimize (insns, JUMP_CROSS_JUMP, |
3517 | JUMP_NOOP_MOVES, | |
3518 | !JUMP_AFTER_REGSCAN)); | |
735a0e33 | 3519 | |
032713aa | 3520 | /* Dump rtl code after jump, if we are doing that. */ |
4291d9c8 | 3521 | |
032713aa | 3522 | if (jump2_opt_dump) |
735a0e33 | 3523 | { |
375e2d5c | 3524 | dump_rtl (".17.jump2", decl, print_rtl_with_bb, insns); |
735a0e33 | 3525 | if (graph_dump_format != no_graph) |
375e2d5c | 3526 | print_rtl_graph_with_bb (dump_base_name, ".17.jump2", insns); |
735a0e33 | 3527 | } |
032713aa | 3528 | } |
4291d9c8 | 3529 | |
2c65021a RK |
3530 | /* If a machine dependent reorganization is needed, call it. */ |
3531 | #ifdef MACHINE_DEPENDENT_REORG | |
88924698 | 3532 | if (mach_dep_reorg_dump) |
375e2d5c | 3533 | open_dump_file (".18.mach", decl_printable_name (decl, 2)); |
88924698 | 3534 | |
2c65021a | 3535 | MACHINE_DEPENDENT_REORG (insns); |
032713aa NC |
3536 | |
3537 | if (mach_dep_reorg_dump) | |
735a0e33 | 3538 | { |
88924698 | 3539 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 | 3540 | if (graph_dump_format != no_graph) |
375e2d5c | 3541 | print_rtl_graph_with_bb (dump_base_name, ".18.mach", insns); |
735a0e33 | 3542 | } |
a3770a81 RH |
3543 | |
3544 | if (ggc_p) | |
3545 | ggc_collect (); | |
2c65021a RK |
3546 | #endif |
3547 | ||
4291d9c8 | 3548 | /* If a scheduling pass for delayed branches is to be done, |
0f41302f | 3549 | call the scheduling code. */ |
4291d9c8 RS |
3550 | |
3551 | #ifdef DELAY_SLOTS | |
3552 | if (optimize > 0 && flag_delayed_branch) | |
3553 | { | |
bbd2180d | 3554 | if (dbr_sched_dump) |
375e2d5c | 3555 | open_dump_file (".19.dbr", decl_printable_name (decl, 2)); |
bbd2180d | 3556 | |
3071fab5 RH |
3557 | TIMEVAR |
3558 | (dbr_sched_time, | |
3559 | { | |
3071fab5 RH |
3560 | dbr_schedule (insns, rtl_dump_file); |
3561 | }); | |
735a0e33 | 3562 | |
4291d9c8 | 3563 | if (dbr_sched_dump) |
735a0e33 | 3564 | { |
bbd2180d | 3565 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 | 3566 | if (graph_dump_format != no_graph) |
375e2d5c | 3567 | print_rtl_graph_with_bb (dump_base_name, ".19.dbr", insns); |
735a0e33 | 3568 | } |
4291d9c8 | 3569 | } |
a3770a81 RH |
3570 | |
3571 | if (ggc_p) | |
3572 | ggc_collect (); | |
4291d9c8 RS |
3573 | #endif |
3574 | ||
67e1e279 JL |
3575 | /* Shorten branches. |
3576 | ||
3577 | Note this must run before reg-stack because of death note (ab)use | |
3578 | in the ia32 backend. */ | |
3579 | TIMEVAR (shorten_branch_time, | |
3580 | { | |
3581 | shorten_branches (get_insns ()); | |
3582 | }); | |
3583 | ||
4291d9c8 | 3584 | #ifdef STACK_REGS |
25ba7583 | 3585 | if (stack_reg_dump) |
375e2d5c | 3586 | open_dump_file (".20.stack", decl_printable_name (decl, 2)); |
25ba7583 | 3587 | |
01898d58 | 3588 | TIMEVAR (stack_reg_time, reg_to_stack (insns, rtl_dump_file)); |
032713aa | 3589 | |
4291d9c8 | 3590 | if (stack_reg_dump) |
735a0e33 | 3591 | { |
375e2d5c | 3592 | close_dump_file (print_rtl_with_bb, insns); |
735a0e33 | 3593 | if (graph_dump_format != no_graph) |
375e2d5c | 3594 | print_rtl_graph_with_bb (dump_base_name, ".20.stack", insns); |
735a0e33 | 3595 | } |
a3770a81 RH |
3596 | |
3597 | if (ggc_p) | |
3598 | ggc_collect (); | |
4291d9c8 RS |
3599 | #endif |
3600 | ||
3601 | /* Now turn the rtl into assembler code. */ | |
3602 | ||
3603 | TIMEVAR (final_time, | |
3604 | { | |
3605 | rtx x; | |
3606 | char *fnname; | |
3607 | ||
3608 | /* Get the function's name, as described by its RTL. | |
3609 | This may be different from the DECL_NAME name used | |
3610 | in the source file. */ | |
3611 | ||
3612 | x = DECL_RTL (decl); | |
3613 | if (GET_CODE (x) != MEM) | |
3614 | abort (); | |
3615 | x = XEXP (x, 0); | |
3616 | if (GET_CODE (x) != SYMBOL_REF) | |
3617 | abort (); | |
3618 | fnname = XSTR (x, 0); | |
3619 | ||
3620 | assemble_start_function (decl, fnname); | |
3621 | final_start_function (insns, asm_out_file, optimize); | |
3622 | final (insns, asm_out_file, optimize, 0); | |
3623 | final_end_function (insns, asm_out_file, optimize); | |
3624 | assemble_end_function (decl, fnname); | |
e5e809f4 JL |
3625 | if (! quiet_flag) |
3626 | fflush (asm_out_file); | |
9ddca353 | 3627 | |
e881bb1b RH |
3628 | /* Release all memory allocated by flow. */ |
3629 | free_basic_block_vars (0); | |
3630 | ||
9ddca353 RK |
3631 | /* Release all memory held by regsets now */ |
3632 | regset_release_memory (); | |
4291d9c8 RS |
3633 | }); |
3634 | ||
a3770a81 RH |
3635 | if (ggc_p) |
3636 | ggc_collect (); | |
3637 | ||
4291d9c8 RS |
3638 | /* Write DBX symbols if requested */ |
3639 | ||
3640 | /* Note that for those inline functions where we don't initially | |
3641 | know for certain that we will be generating an out-of-line copy, | |
3642 | the first invocation of this routine (rest_of_compilation) will | |
3643 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
3644 | Later on, finish_compilation will call rest_of_compilation again | |
3645 | for those inline functions that need to have out-of-line copies | |
3646 | generated. During that call, we *will* be routed past here. */ | |
3647 | ||
3648 | #ifdef DBX_DEBUGGING_INFO | |
3649 | if (write_symbols == DBX_DEBUG) | |
3650 | TIMEVAR (symout_time, dbxout_function (decl)); | |
3651 | #endif | |
3652 | ||
3653 | #ifdef DWARF_DEBUGGING_INFO | |
3654 | if (write_symbols == DWARF_DEBUG) | |
3655 | TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0)); | |
3656 | #endif | |
3657 | ||
9a666dda JM |
3658 | #ifdef DWARF2_DEBUGGING_INFO |
3659 | if (write_symbols == DWARF2_DEBUG) | |
88dad228 | 3660 | TIMEVAR (symout_time, dwarf2out_decl (decl)); |
9a666dda JM |
3661 | #endif |
3662 | ||
4291d9c8 RS |
3663 | exit_rest_of_compilation: |
3664 | ||
f246a305 RS |
3665 | /* In case the function was not output, |
3666 | don't leave any temporary anonymous types | |
3667 | queued up for sdb output. */ | |
3668 | #ifdef SDB_DEBUGGING_INFO | |
3669 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3670 | sdbout_types (NULL_TREE); |
f246a305 RS |
3671 | #endif |
3672 | ||
4291d9c8 | 3673 | reload_completed = 0; |
56744d1a | 3674 | flow2_completed = 0; |
f1db3576 | 3675 | no_new_pseudos = 0; |
4291d9c8 | 3676 | |
32e705c4 MM |
3677 | TIMEVAR (final_time, |
3678 | { | |
3679 | /* Clear out the insn_length contents now that they are no | |
3680 | longer valid. */ | |
3681 | init_insn_lengths (); | |
4291d9c8 | 3682 | |
32e705c4 MM |
3683 | /* Clear out the real_constant_chain before some of the rtx's |
3684 | it runs through become garbage. */ | |
3685 | clear_const_double_mem (); | |
4291d9c8 | 3686 | |
32e705c4 MM |
3687 | /* Cancel the effect of rtl_in_current_obstack. */ |
3688 | resume_temporary_allocation (); | |
adcd38c9 | 3689 | |
32e705c4 MM |
3690 | /* Show no temporary slots allocated. */ |
3691 | init_temp_slots (); | |
fa51b01b RH |
3692 | |
3693 | free_basic_block_vars (0); | |
32e705c4 | 3694 | }); |
adcd38c9 | 3695 | |
c8d86b9a JW |
3696 | /* Make sure volatile mem refs aren't considered valid operands for |
3697 | arithmetic insns. We must call this here if this is a nested inline | |
3698 | function, since the above code leaves us in the init_recog state | |
3699 | (from final.c), and the function context push/pop code does not | |
3700 | save/restore volatile_ok. | |
3701 | ||
3702 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3703 | anymore if we do it here? */ | |
3704 | ||
3705 | init_recog_no_volatile (); | |
3706 | ||
21cd906e | 3707 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3708 | free_after_parsing (cfun); |
fa51b01b | 3709 | if (! DECL_DEFER_OUTPUT (decl)) |
01d939e8 BS |
3710 | free_after_compilation (cfun); |
3711 | cfun = 0; | |
a3770a81 | 3712 | |
21cd906e MM |
3713 | if (ggc_p) |
3714 | ggc_collect (); | |
a3770a81 | 3715 | |
4291d9c8 RS |
3716 | /* The parsing time is all the time spent in yyparse |
3717 | *except* what is spent in this function. */ | |
3718 | ||
3719 | parse_time -= get_run_time () - start_time; | |
3720 | } | |
3721 | \f | |
b8468bc7 NC |
3722 | static void |
3723 | display_help () | |
3724 | { | |
3725 | int undoc; | |
114791ea | 3726 | unsigned long i; |
87e11268 | 3727 | const char * lang; |
b8468bc7 | 3728 | |
40f943dd | 3729 | #ifndef USE_CPPLIB |
b8468bc7 NC |
3730 | printf ("Usage: %s input [switches]\n", progname); |
3731 | printf ("Switches:\n"); | |
40f943dd | 3732 | #endif |
b8468bc7 NC |
3733 | printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n"); |
3734 | printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n"); | |
3735 | printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n"); | |
efa3896a | 3736 | printf (" -finline-limit=<number> Limits the size of inlined functions to <number>\n"); |
b8468bc7 NC |
3737 | |
3738 | for (i = NUM_ELEM (f_options); i--;) | |
3739 | { | |
87e11268 | 3740 | const char * description = f_options[i].description; |
b8468bc7 NC |
3741 | |
3742 | if (description != NULL && * description != 0) | |
3743 | printf (" -f%-21s %s\n", | |
3744 | f_options[i].string, description); | |
3745 | } | |
3746 | ||
3747 | printf (" -O[number] Set optimisation level to [number]\n"); | |
3748 | printf (" -Os Optimise for space rather than speed\n"); | |
3749 | printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n"); | |
3750 | printf (" -pedantic-errors Like -pedantic except that errors are produced\n"); | |
3751 | printf (" -w Suppress warnings\n"); | |
3752 | printf (" -W Enable extra warnings\n"); | |
3753 | ||
3754 | for (i = NUM_ELEM (W_options); i--;) | |
3755 | { | |
87e11268 | 3756 | const char * description = W_options[i].description; |
b8468bc7 NC |
3757 | |
3758 | if (description != NULL && * description != 0) | |
3759 | printf (" -W%-21s %s\n", | |
3760 | W_options[i].string, description); | |
3761 | } | |
3762 | ||
3763 | printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n"); | |
3764 | printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"); | |
3765 | printf (" -p Enable function profiling\n"); | |
3766 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) | |
3767 | printf (" -a Enable block profiling \n"); | |
3768 | #endif | |
3769 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT | |
3770 | printf (" -ax Enable jump profiling \n"); | |
3771 | #endif | |
3772 | printf (" -o <file> Place output into <file> \n"); | |
3773 | printf (" -G <number> Put global and static data smaller than <number>\n"); | |
40f943dd | 3774 | printf (" bytes into a special section (on some targets)\n"); |
b8468bc7 NC |
3775 | |
3776 | for (i = NUM_ELEM (debug_args); i--;) | |
3777 | { | |
3778 | if (debug_args[i].description != NULL) | |
39dd8003 | 3779 | printf (" -g%-21s %s\n", debug_args[i].arg, debug_args[i].description); |
b8468bc7 NC |
3780 | } |
3781 | ||
3782 | printf (" -aux-info <file> Emit declaration info into <file>.X\n"); | |
3783 | printf (" -quiet Do not display functions compiled or elapsed time\n"); | |
3784 | printf (" -version Display the compiler's version\n"); | |
3785 | printf (" -d[letters] Enable dumps from specific passes of the compiler\n"); | |
3786 | printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n"); | |
7b5efe21 | 3787 | #if defined INSN_SCHEDULING |
efa3896a | 3788 | printf (" -sched-verbose=<number> Set the verbosity level of the scheduler\n"); |
b8468bc7 NC |
3789 | #endif |
3790 | printf (" --help Display this information\n"); | |
3791 | ||
3792 | undoc = 0; | |
3793 | lang = "language"; | |
3794 | ||
3795 | /* Display descriptions of language specific options. | |
3796 | If there is no description, note that there is an undocumented option. | |
3797 | If the description is empty, do not display anything. (This allows | |
3798 | options to be deliberately undocumented, for whatever reason). | |
3799 | If the option string is missing, then this is a marker, indicating | |
630962bf | 3800 | that the description string is in fact the name of a language, whose |
b8468bc7 NC |
3801 | language specific options are to follow. */ |
3802 | ||
3803 | if (NUM_ELEM (documented_lang_options) > 1) | |
3804 | { | |
b8468bc7 NC |
3805 | printf ("\nLanguage specific options:\n"); |
3806 | ||
3807 | for (i = 0; i < NUM_ELEM (documented_lang_options); i++) | |
3808 | { | |
87e11268 KG |
3809 | const char * description = documented_lang_options[i].description; |
3810 | const char * option = documented_lang_options[i].option; | |
b8468bc7 NC |
3811 | |
3812 | if (description == NULL) | |
844642e6 NC |
3813 | { |
3814 | undoc = 1; | |
3815 | ||
3816 | if (extra_warnings) | |
3817 | printf (" %-23.23s [undocumented]\n", option); | |
3818 | } | |
b8468bc7 NC |
3819 | else if (* description == 0) |
3820 | continue; | |
3821 | else if (option == NULL) | |
3822 | { | |
3823 | if (undoc) | |
3824 | printf | |
3825 | ("\nThere are undocumented %s specific options as well.\n", | |
3826 | lang); | |
3827 | undoc = 0; | |
3828 | ||
3829 | printf ("\n Options for %s:\n", description); | |
3830 | ||
3831 | lang = description; | |
3832 | } | |
3833 | else | |
3834 | printf (" %-23.23s %s\n", option, description); | |
3835 | } | |
3836 | } | |
3837 | ||
3838 | if (undoc) | |
3839 | printf ("\nThere are undocumented %s specific options as well.\n", lang); | |
3840 | ||
3841 | if (NUM_ELEM (target_switches) > 1 | |
3842 | #ifdef TARGET_OPTIONS | |
3843 | || NUM_ELEM (target_options) > 1 | |
3844 | #endif | |
3845 | ) | |
3846 | { | |
3847 | int doc = 0; | |
3848 | ||
3849 | undoc = 0; | |
3850 | ||
3851 | printf ("\nTarget specific options:\n"); | |
3852 | ||
3853 | for (i = NUM_ELEM (target_switches); i--;) | |
3854 | { | |
87e11268 KG |
3855 | const char * option = target_switches[i].name; |
3856 | const char * description = target_switches[i].description; | |
b8468bc7 | 3857 | |
844642e6 | 3858 | if (option == NULL || * option == 0) |
b8468bc7 NC |
3859 | continue; |
3860 | else if (description == NULL) | |
844642e6 NC |
3861 | { |
3862 | undoc = 1; | |
3863 | ||
3864 | if (extra_warnings) | |
3865 | printf (" -m%-21.21s [undocumented]\n", option); | |
3866 | } | |
b8468bc7 | 3867 | else if (* description != 0) |
1f50b029 | 3868 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
3869 | } |
3870 | ||
3871 | #ifdef TARGET_OPTIONS | |
3872 | for (i = NUM_ELEM (target_options); i--;) | |
3873 | { | |
87e11268 KG |
3874 | const char * option = target_options[i].prefix; |
3875 | const char * description = target_options[i].description; | |
b8468bc7 | 3876 | |
844642e6 | 3877 | if (option == NULL || * option == 0) |
b8468bc7 NC |
3878 | continue; |
3879 | else if (description == NULL) | |
844642e6 NC |
3880 | { |
3881 | undoc = 1; | |
3882 | ||
3883 | if (extra_warnings) | |
3884 | printf (" -m%-21.21s [undocumented]\n", option); | |
3885 | } | |
b8468bc7 | 3886 | else if (* description != 0) |
1f50b029 | 3887 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
3888 | } |
3889 | #endif | |
3890 | if (undoc) | |
ff59bfe6 JM |
3891 | { |
3892 | if (doc) | |
3893 | printf ("\nThere are undocumented target specific options as well.\n"); | |
3894 | else | |
3895 | printf (" They exist, but they are not documented.\n"); | |
3896 | } | |
b8468bc7 NC |
3897 | } |
3898 | } | |
39dd8003 NC |
3899 | \f |
3900 | /* Parse a -d... comand line switch. */ | |
3901 | ||
3902 | static void | |
3903 | decode_d_option (arg) | |
3904 | const char * arg; | |
3905 | { | |
3906 | while (* arg) | |
3907 | switch (* arg ++) | |
3908 | { | |
3909 | case 'a': | |
3910 | branch_prob_dump = 1; | |
3911 | combine_dump = 1; | |
3912 | #ifdef DELAY_SLOTS | |
3913 | dbr_sched_dump = 1; | |
3914 | #endif | |
3915 | flow_dump = 1; | |
3916 | flow2_dump = 1; | |
3917 | global_reg_dump = 1; | |
3918 | jump_opt_dump = 1; | |
3919 | addressof_dump = 1; | |
3920 | jump2_opt_dump = 1; | |
3921 | local_reg_dump = 1; | |
3922 | loop_dump = 1; | |
3923 | regmove_dump = 1; | |
3924 | rtl_dump = 1; | |
3925 | cse_dump = 1; | |
3926 | cse2_dump = 1; | |
3927 | gcse_dump = 1; | |
3928 | sched_dump = 1; | |
3929 | sched2_dump = 1; | |
3930 | #ifdef STACK_REGS | |
3931 | stack_reg_dump = 1; | |
3932 | #endif | |
3933 | #ifdef MACHINE_DEPENDENT_REORG | |
3934 | mach_dep_reorg_dump = 1; | |
3935 | #endif | |
3936 | peephole2_dump = 1; | |
3937 | break; | |
3938 | case 'A': | |
3939 | flag_debug_asm = 1; | |
3940 | break; | |
3941 | case 'b': | |
3942 | branch_prob_dump = 1; | |
3943 | break; | |
3944 | case 'c': | |
3945 | combine_dump = 1; | |
3946 | break; | |
3947 | #ifdef DELAY_SLOTS | |
3948 | case 'd': | |
3949 | dbr_sched_dump = 1; | |
3950 | break; | |
3951 | #endif | |
3952 | case 'f': | |
3953 | flow_dump = 1; | |
3954 | break; | |
3955 | case 'F': | |
3956 | addressof_dump = 1; | |
3957 | break; | |
3958 | case 'g': | |
3959 | global_reg_dump = 1; | |
3960 | break; | |
3961 | case 'G': | |
3962 | gcse_dump = 1; | |
3963 | break; | |
3964 | case 'j': | |
3965 | jump_opt_dump = 1; | |
3966 | break; | |
3967 | case 'J': | |
3968 | jump2_opt_dump = 1; | |
3969 | break; | |
3970 | #ifdef STACK_REGS | |
3971 | case 'k': | |
3972 | stack_reg_dump = 1; | |
3973 | break; | |
3974 | #endif | |
3975 | case 'l': | |
3976 | local_reg_dump = 1; | |
3977 | break; | |
3978 | case 'L': | |
3979 | loop_dump = 1; | |
3980 | break; | |
3981 | case 'm': | |
3982 | flag_print_mem = 1; | |
3983 | break; | |
3984 | #ifdef MACHINE_DEPENDENT_REORG | |
3985 | case 'M': | |
3986 | mach_dep_reorg_dump = 1; | |
3987 | break; | |
3988 | #endif | |
3989 | case 'p': | |
3990 | flag_print_asm_name = 1; | |
3991 | break; | |
3992 | case 'r': | |
3993 | rtl_dump = 1; | |
3994 | break; | |
3995 | case 'R': | |
3996 | sched2_dump = 1; | |
3997 | break; | |
3998 | case 's': | |
3999 | cse_dump = 1; | |
4000 | break; | |
4001 | case 'S': | |
4002 | sched_dump = 1; | |
4003 | break; | |
4004 | case 't': | |
4005 | cse2_dump = 1; | |
4006 | break; | |
4007 | case 'N': | |
4008 | regmove_dump = 1; | |
4009 | break; | |
4010 | case 'v': | |
4011 | graph_dump_format = vcg; | |
4012 | break; | |
4013 | case 'w': | |
4014 | flow2_dump = 1; | |
4015 | break; | |
4016 | case 'x': | |
4017 | rtl_dump_and_exit = 1; | |
4018 | break; | |
4019 | case 'y': | |
4020 | set_yydebug (1); | |
4021 | break; | |
4022 | case 'z': | |
4023 | peephole2_dump = 1; | |
4024 | break; | |
4025 | case 'D': /* These are handled by the preprocessor. */ | |
4026 | case 'I': | |
4027 | break; | |
4028 | default: | |
4029 | warning ("unrecognised gcc debugging option: %c", arg[-1]); | |
4030 | break; | |
4031 | } | |
4032 | } | |
b8468bc7 | 4033 | |
39dd8003 NC |
4034 | /* Parse a -f... comand line switch. ARG is the value after the -f. |
4035 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4036 | Return the number of strings consumed. */ | |
b8468bc7 NC |
4037 | |
4038 | static int | |
39dd8003 NC |
4039 | decode_f_option (arg) |
4040 | const char * arg; | |
b8468bc7 | 4041 | { |
39dd8003 NC |
4042 | int j; |
4043 | ||
4044 | /* Search for the option in the table of binary f options. */ | |
4045 | for (j = sizeof (f_options) / sizeof (f_options[0]); j--;) | |
4046 | { | |
4047 | if (!strcmp (arg, f_options[j].string)) | |
4048 | { | |
4049 | *f_options[j].variable = f_options[j].on_value; | |
4050 | return 1; | |
4051 | } | |
4052 | ||
4053 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4054 | && ! strcmp (arg + 3, f_options[j].string)) | |
4055 | { | |
4056 | *f_options[j].variable = ! f_options[j].on_value; | |
4057 | return 1; | |
4058 | } | |
4059 | } | |
b8468bc7 | 4060 | |
39dd8003 NC |
4061 | if (!strncmp (arg, "inline-limit-", 13) |
4062 | || !strncmp (arg, "inline-limit=", 13)) | |
4063 | inline_max_insns = | |
4064 | read_integral_parameter (arg + 13, arg - 2, inline_max_insns); | |
4065 | #ifdef INSN_SCHEDULING | |
4066 | else if (!strncmp (arg, "sched-verbose=", 14)) | |
ec0ce6e2 | 4067 | fix_sched_param ("verbose", (const char *)(arg + 14)); |
39dd8003 NC |
4068 | #endif |
4069 | else if (!strncmp (arg, "fixed-", 6)) | |
ec0ce6e2 | 4070 | fix_register ((const char *)(arg + 6), 1, 1); |
39dd8003 | 4071 | else if (!strncmp (arg, "call-used-", 10)) |
ec0ce6e2 | 4072 | fix_register ((const char *)(arg + 10), 0, 1); |
39dd8003 | 4073 | else if (!strncmp (arg, "call-saved-", 11)) |
ec0ce6e2 | 4074 | fix_register ((const char *)(arg + 11), 0, 0); |
39dd8003 NC |
4075 | else if (!strncmp (arg, "align-loops=", 12)) |
4076 | align_loops = read_integral_parameter (arg + 12, arg - 2, align_loops); | |
4077 | else if (!strncmp (arg, "align-functions=", 16)) | |
4078 | align_functions = | |
4079 | read_integral_parameter (arg + 16, arg - 2, align_functions); | |
4080 | else if (!strncmp (arg, "align-jumps=", 12)) | |
4081 | align_jumps = read_integral_parameter (arg + 12, arg - 2, align_jumps); | |
4082 | else if (!strncmp (arg, "align-labels=", 13)) | |
4083 | align_labels = read_integral_parameter (arg + 13, arg - 2, align_labels); | |
a157febd GK |
4084 | else if (!strncmp (arg, "stack-limit-register=", 21)) |
4085 | { | |
4086 | int reg = decode_reg_name (arg + 21); | |
4087 | if (reg < 0) | |
4088 | error ("unrecognized register name `%s'", arg + 21); | |
4089 | else | |
4090 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
4091 | } | |
4092 | else if (!strncmp (arg, "stack-limit-symbol=", 19)) | |
4093 | { | |
4094 | char *nm; | |
4095 | if (ggc_p) | |
4096 | nm = ggc_alloc_string (arg + 19, strlen (arg + 19)); | |
4097 | else | |
4098 | nm = xstrdup (arg + 19); | |
4099 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm); | |
4100 | } | |
4101 | else if (!strcmp (arg, "no-stack-limit")) | |
4102 | stack_limit_rtx = NULL_RTX; | |
39dd8003 NC |
4103 | else if (!strcmp (arg, "preprocessed")) |
4104 | /* Recognise this switch but do nothing. This prevents warnings | |
4105 | about an unrecognised switch if cpplib has not been linked in. */ | |
4106 | ; | |
1f50b029 | 4107 | else |
39dd8003 NC |
4108 | return 0; |
4109 | ||
4110 | return 1; | |
4111 | } | |
4112 | ||
4113 | /* Parse a -W... comand line switch. ARG is the value after the -W. | |
4114 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4115 | Return the number of strings consumed. */ | |
4116 | static int | |
4117 | decode_W_option (arg) | |
4118 | const char * arg; | |
4119 | { | |
4120 | int j; | |
1f50b029 | 4121 | |
39dd8003 NC |
4122 | /* Search for the option in the table of binary W options. */ |
4123 | ||
4124 | for (j = sizeof (W_options) / sizeof (W_options[0]); j--;) | |
4125 | { | |
4126 | if (!strcmp (arg, W_options[j].string)) | |
4127 | { | |
4128 | *W_options[j].variable = W_options[j].on_value; | |
4129 | return 1; | |
4130 | } | |
4131 | ||
4132 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4133 | && ! strcmp (arg + 3, W_options[j].string)) | |
4134 | { | |
4135 | *W_options[j].variable = ! W_options[j].on_value; | |
4136 | return 1; | |
4137 | } | |
4138 | } | |
4139 | ||
4140 | if (!strncmp (arg, "id-clash-", 9)) | |
4141 | { | |
4142 | const int id_clash_val = read_integral_parameter (arg + 9, arg - 2, -1); | |
4143 | ||
4144 | if (id_clash_val != -1) | |
4145 | { | |
4146 | id_clash_len = id_clash_val; | |
4147 | warn_id_clash = 1; | |
4148 | } | |
4149 | } | |
4150 | else if (!strncmp (arg, "larger-than-", 12)) | |
4151 | { | |
4152 | const int larger_than_val = | |
4153 | read_integral_parameter (arg + 12, arg - 2, -1); | |
4154 | if (larger_than_val != -1) | |
4155 | { | |
4156 | larger_than_size = larger_than_val; | |
4157 | warn_larger_than = 1; | |
4158 | } | |
4159 | } | |
4160 | else | |
b8468bc7 | 4161 | return 0; |
39dd8003 NC |
4162 | |
4163 | return 1; | |
4164 | } | |
4165 | ||
4166 | /* Parse a -g... comand line switch. ARG is the value after the -g. | |
4167 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4168 | Return the number of strings consumed. */ | |
14a774a9 | 4169 | |
39dd8003 NC |
4170 | static int |
4171 | decode_g_option (arg) | |
4172 | const char * arg; | |
4173 | { | |
4174 | unsigned level; | |
4175 | /* A lot of code assumes write_symbols == NO_DEBUG if the | |
4176 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4177 | of what debugging type has been selected). This records the | |
4178 | selected type. It is an error to specify more than one | |
4179 | debugging type. */ | |
4180 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
4181 | /* Non-zero if debugging format has been explicitly set. | |
4182 | -g and -ggdb don't explicitly set the debugging format so | |
4183 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4184 | static int type_explicitly_set_p = 0; | |
4185 | /* Indexed by enum debug_info_type. */ | |
4186 | static const char * debug_type_names[] = | |
4187 | { | |
4188 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff" | |
4189 | }; | |
1f50b029 | 4190 | |
39dd8003 NC |
4191 | /* The maximum admissible debug level value. */ |
4192 | static const unsigned max_debug_level = 3; | |
1f50b029 | 4193 | |
39dd8003 NC |
4194 | /* Look up ARG in the table. */ |
4195 | for (da = debug_args; da->arg; da++) | |
4196 | { | |
4197 | const int da_len = strlen (da->arg); | |
4198 | ||
4199 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
4200 | { | |
4201 | enum debug_info_type type = da->debug_type; | |
4202 | const char * p = arg + da_len; | |
4203 | ||
4204 | if (*p && (*p < '0' || *p > '9')) | |
4205 | continue; | |
4206 | ||
4207 | /* A debug flag without a level defaults to level 2. | |
4208 | Note we do not want to call read_integral_parameter | |
4209 | for that case since it will call atoi which | |
4210 | will return zero. | |
4211 | ||
4212 | ??? We may want to generalize the interface to | |
4213 | read_integral_parameter to better handle this case | |
4214 | if this case shows up often. */ | |
4215 | if (*p) | |
4216 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
4217 | else | |
4218 | level = 2; | |
4219 | ||
4220 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) | |
4221 | { | |
4222 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
4223 | level, level); | |
4224 | if (level == 2) | |
4225 | error ("use -gdwarf-2 for DWARF v2"); | |
4226 | } | |
4227 | ||
4228 | if (level > max_debug_level) | |
4229 | { | |
4230 | warning ("\ | |
4231 | ignoring option `%s' due to invalid debug level specification", | |
4232 | arg - 2); | |
4233 | level = debug_info_level; | |
4234 | } | |
4235 | ||
4236 | if (type == NO_DEBUG) | |
4237 | { | |
4238 | type = PREFERRED_DEBUGGING_TYPE; | |
4239 | ||
4240 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) | |
4241 | { | |
4242 | #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2) | |
4243 | type = DWARF2_DEBUG; | |
4244 | #else | |
4245 | #ifdef DBX_DEBUGGING_INFO | |
4246 | type = DBX_DEBUG; | |
4247 | #endif | |
4248 | #endif | |
4249 | } | |
4250 | } | |
4251 | ||
4252 | if (type == NO_DEBUG) | |
14a774a9 | 4253 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4254 | |
4255 | /* Does it conflict with an already selected type? */ | |
4256 | if (type_explicitly_set_p | |
4257 | /* -g/-ggdb don't conflict with anything */ | |
4258 | && da->debug_type != NO_DEBUG | |
4259 | && type != selected_debug_type) | |
4260 | warning ("`%s' ignored, conflicts with `-g%s'", | |
4261 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
4262 | else | |
4263 | { | |
4264 | /* If the format has already been set, -g/-ggdb | |
4265 | only change the debug level. */ | |
4266 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
4267 | ; /* don't change debugging type */ | |
4268 | else | |
4269 | { | |
4270 | selected_debug_type = type; | |
4271 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
4272 | } | |
4273 | ||
4274 | write_symbols = (level == 0 | |
4275 | ? NO_DEBUG | |
4276 | : selected_debug_type); | |
4277 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
4278 | debug_info_level = (enum debug_info_level) level; | |
4279 | } | |
4280 | ||
4281 | break; | |
4282 | } | |
4283 | } | |
1f50b029 | 4284 | |
39dd8003 | 4285 | if (! da->arg) |
14a774a9 | 4286 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4287 | |
4288 | return 1; | |
4289 | } | |
4290 | ||
4291 | /* Decode the first argument in the argv as a language-independent option. | |
4292 | Return the number of strings consumed. 'strings_processed' is the | |
4293 | number of strings that have already been decoded in a language | |
4294 | specific fashion before this function was invoked. */ | |
4295 | ||
4296 | static unsigned | |
4297 | independent_decode_option (argc, argv, strings_processed) | |
4298 | int argc; | |
4299 | char ** argv; | |
4300 | unsigned strings_processed ATTRIBUTE_UNUSED; | |
4301 | { | |
4302 | char * arg = argv[0]; | |
1f50b029 | 4303 | |
39dd8003 | 4304 | if (arg[0] != '-' || arg[1] == 0) |
b8468bc7 | 4305 | { |
39dd8003 NC |
4306 | if (arg[0] == '+') |
4307 | return 0; | |
4308 | ||
4309 | filename = arg; | |
4310 | ||
4311 | return 1; | |
b8468bc7 | 4312 | } |
39dd8003 NC |
4313 | |
4314 | arg ++; | |
1f50b029 | 4315 | |
39dd8003 NC |
4316 | if (!strcmp (arg, "-help")) |
4317 | { | |
4318 | display_help (); | |
4319 | exit (0); | |
4320 | } | |
4321 | ||
4322 | if (* arg == 'Y') | |
4323 | arg ++; | |
1f50b029 | 4324 | |
39dd8003 | 4325 | switch (* arg) |
b8468bc7 | 4326 | { |
39dd8003 NC |
4327 | default: |
4328 | return 0; | |
4329 | ||
4330 | case 'O': | |
4331 | /* Already been treated in main (). Do nothing. */ | |
4332 | break; | |
4333 | ||
4334 | case 'm': | |
4335 | set_target_switch (arg + 1); | |
4336 | break; | |
4337 | ||
4338 | case 'f': | |
4339 | return decode_f_option (arg + 1); | |
4340 | ||
4341 | case 'g': | |
4342 | return decode_g_option (arg + 1); | |
4343 | ||
4344 | case 'd': | |
4345 | if (!strcmp (arg, "dumpbase")) | |
4346 | { | |
4347 | if (argc == 1) | |
4348 | return 0; | |
4349 | ||
4350 | dump_base_name = argv[1]; | |
4351 | return 2; | |
4352 | } | |
4353 | else | |
4354 | decode_d_option (arg + 1); | |
4355 | break; | |
4356 | ||
4357 | case 'p': | |
4358 | if (!strcmp (arg, "pedantic")) | |
4359 | pedantic = 1; | |
4360 | else if (!strcmp (arg, "pedantic-errors")) | |
4361 | flag_pedantic_errors = pedantic = 1; | |
4362 | else if (arg[1] == 0) | |
4363 | profile_flag = 1; | |
4364 | else | |
4365 | return 0; | |
4366 | break; | |
4367 | ||
4368 | case 'q': | |
4369 | if (!strcmp (arg, "quiet")) | |
4370 | quiet_flag = 1; | |
4371 | else | |
4372 | return 0; | |
4373 | break; | |
4374 | ||
4375 | case 'v': | |
4376 | if (!strcmp (arg, "version")) | |
4377 | version_flag = 1; | |
4378 | else | |
4379 | return 0; | |
4380 | break; | |
4381 | ||
4382 | case 'w': | |
4383 | if (arg[1] == 0) | |
4384 | inhibit_warnings = 1; | |
4385 | else | |
4386 | return 0; | |
4387 | break; | |
4388 | ||
4389 | case 'W': | |
4390 | if (arg[1] == 0) | |
4391 | { | |
4392 | extra_warnings = 1; | |
4393 | /* We save the value of warn_uninitialized, since if they put | |
4394 | -Wuninitialized on the command line, we need to generate a | |
4395 | warning about not using it without also specifying -O. */ | |
4396 | if (warn_uninitialized != 1) | |
4397 | warn_uninitialized = 2; | |
4398 | } | |
4399 | else | |
4400 | return decode_W_option (arg + 1); | |
4401 | break; | |
4402 | ||
4403 | case 'a': | |
4404 | if (arg[1] == 0) | |
4405 | { | |
4406 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
4407 | warning ("`-a' option (basic block profile) not supported"); | |
4408 | #else | |
4409 | profile_block_flag = (profile_block_flag < 2) ? 1 : 3; | |
4410 | #endif | |
4411 | } | |
4412 | else if (!strcmp (arg, "ax")) | |
b8468bc7 | 4413 | { |
39dd8003 NC |
4414 | #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) |
4415 | warning ("`-ax' option (jump profiling) not supported"); | |
4416 | #else | |
4417 | profile_block_flag = (!profile_block_flag | |
4418 | || profile_block_flag == 2) ? 2 : 3; | |
4419 | #endif | |
4420 | } | |
4421 | else if (!strncmp (arg, "aux-info", 8)) | |
4422 | { | |
4423 | flag_gen_aux_info = 1; | |
4424 | if (arg[8] == '\0') | |
4425 | { | |
4426 | if (argc == 1) | |
4427 | return 0; | |
4428 | ||
4429 | aux_info_file_name = argv[1]; | |
4430 | return 2; | |
4431 | } | |
4432 | else | |
4433 | aux_info_file_name = arg + 8; | |
4434 | } | |
4435 | else | |
4436 | return 0; | |
4437 | break; | |
4438 | ||
4439 | case 'o': | |
4440 | if (arg[1] == 0) | |
4441 | { | |
4442 | if (argc == 1) | |
4443 | return 0; | |
1f50b029 | 4444 | |
39dd8003 NC |
4445 | asm_file_name = argv[1]; |
4446 | return 2; | |
b8468bc7 | 4447 | } |
39dd8003 NC |
4448 | return 0; |
4449 | ||
4450 | case 'G': | |
4451 | { | |
4452 | int g_switch_val; | |
4453 | int return_val; | |
4454 | ||
4455 | if (arg[1] == 0) | |
4456 | { | |
4457 | if (argc == 1) | |
4458 | return 0; | |
4459 | ||
4460 | g_switch_val = read_integral_parameter (argv[1], 0, -1); | |
4461 | return_val = 2; | |
4462 | } | |
4463 | else | |
4464 | { | |
4465 | g_switch_val = read_integral_parameter (arg + 1, 0, -1); | |
4466 | return_val = 1; | |
4467 | } | |
4468 | ||
4469 | if (g_switch_val == -1) | |
4470 | return_val = 0; | |
4471 | else | |
4472 | { | |
4473 | g_switch_set = TRUE; | |
4474 | g_switch_value = g_switch_val; | |
4475 | } | |
4476 | ||
4477 | return return_val; | |
4478 | } | |
b8468bc7 | 4479 | } |
1f50b029 | 4480 | |
b8468bc7 NC |
4481 | return 1; |
4482 | } | |
4483 | \f | |
4291d9c8 RS |
4484 | /* Entry point of cc1/c++. Decode command args, then call compile_file. |
4485 | Exit code is 35 if can't open files, 34 if fatal error, | |
4486 | 33 if had nonfatal errors, else success. */ | |
4487 | ||
7adfcfed KG |
4488 | extern int main PROTO ((int, char **)); |
4489 | ||
4291d9c8 | 4490 | int |
114791ea | 4491 | main (argc, argv) |
4291d9c8 RS |
4492 | int argc; |
4493 | char **argv; | |
4291d9c8 RS |
4494 | { |
4495 | register int i; | |
4291d9c8 RS |
4496 | char *p; |
4497 | ||
4498 | /* save in case md file wants to emit args as a comment. */ | |
4499 | save_argc = argc; | |
4500 | save_argv = argv; | |
4501 | ||
4502 | p = argv[0] + strlen (argv[0]); | |
128373ac RK |
4503 | while (p != argv[0] && p[-1] != '/' |
4504 | #ifdef DIR_SEPARATOR | |
4505 | && p[-1] != DIR_SEPARATOR | |
4506 | #endif | |
4507 | ) | |
4508 | --p; | |
4291d9c8 RS |
4509 | progname = p; |
4510 | ||
d9b53430 | 4511 | #ifdef HAVE_LC_MESSAGES |
ab87f8c8 | 4512 | setlocale (LC_MESSAGES, ""); |
d9b53430 | 4513 | #endif |
735396d9 KG |
4514 | (void) bindtextdomain (PACKAGE, localedir); |
4515 | (void) textdomain (PACKAGE); | |
ab87f8c8 | 4516 | |
4291d9c8 RS |
4517 | signal (SIGFPE, float_signal); |
4518 | ||
935d4b07 | 4519 | #ifdef SIGPIPE |
4291d9c8 | 4520 | signal (SIGPIPE, pipe_closed); |
935d4b07 | 4521 | #endif |
4291d9c8 RS |
4522 | |
4523 | decl_printable_name = decl_name; | |
114791ea | 4524 | lang_expand_expr = (lang_expand_expr_t) do_abort; |
4291d9c8 RS |
4525 | |
4526 | /* Initialize whether `char' is signed. */ | |
4527 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
4528 | #ifdef DEFAULT_SHORT_ENUMS | |
4529 | /* Initialize how much space enums occupy, by default. */ | |
4530 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
4531 | #endif | |
4532 | ||
21cd906e | 4533 | /* Initialize the garbage-collector. */ |
d09b562c | 4534 | init_ggc (); |
afe3d090 BS |
4535 | ggc_add_root (&input_file_stack, 1, sizeof input_file_stack, |
4536 | &mark_file_stack); | |
a157febd | 4537 | ggc_add_rtx_root (&stack_limit_rtx, 1); |
afe3d090 | 4538 | |
b53beeb2 RH |
4539 | /* Perform language-specific options intialization. */ |
4540 | lang_init_options (); | |
4541 | ||
4291d9c8 RS |
4542 | /* Scan to see what optimization level has been specified. That will |
4543 | determine the default value of many flags. */ | |
4544 | for (i = 1; i < argc; i++) | |
4545 | { | |
4546 | if (!strcmp (argv[i], "-O")) | |
4547 | { | |
4548 | optimize = 1; | |
16b6e120 | 4549 | optimize_size = 0; |
4291d9c8 RS |
4550 | } |
4551 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4552 | { | |
c6aded7c | 4553 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 | 4554 | char *p = &argv[i][2]; |
c6aded7c AG |
4555 | |
4556 | if ((p[0] == 's') && (p[1] == 0)) | |
16b6e120 NC |
4557 | { |
4558 | optimize_size = 1; | |
4559 | ||
4560 | /* Optimizing for size forces optimize to be 2. */ | |
4561 | optimize = 2; | |
4562 | } | |
c6aded7c AG |
4563 | else |
4564 | { | |
192babfd TP |
4565 | const int optimize_val = read_integral_parameter (p, p - 2, -1); |
4566 | if (optimize_val != -1) | |
16b6e120 | 4567 | { |
192babfd | 4568 | optimize = optimize_val; |
16b6e120 NC |
4569 | optimize_size = 0; |
4570 | } | |
c6aded7c | 4571 | } |
4291d9c8 RS |
4572 | } |
4573 | } | |
4574 | ||
4575 | obey_regdecls = (optimize == 0); | |
4291d9c8 RS |
4576 | |
4577 | if (optimize >= 1) | |
4578 | { | |
6731a3e3 | 4579 | flag_defer_pop = 1; |
4291d9c8 RS |
4580 | flag_thread_jumps = 1; |
4581 | #ifdef DELAY_SLOTS | |
4582 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4583 | #endif |
4584 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4585 | flag_omit_frame_pointer = 1; | |
4291d9c8 RS |
4586 | #endif |
4587 | } | |
4588 | ||
4589 | if (optimize >= 2) | |
4590 | { | |
4591 | flag_cse_follow_jumps = 1; | |
8b3686ed | 4592 | flag_cse_skip_blocks = 1; |
7506f491 | 4593 | flag_gcse = 1; |
4291d9c8 RS |
4594 | flag_expensive_optimizations = 1; |
4595 | flag_strength_reduce = 1; | |
4596 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4597 | flag_rerun_loop_opt = 1; |
ac266247 | 4598 | flag_caller_saves = 1; |
4ac8e06e | 4599 | flag_force_mem = 1; |
ede7cd44 | 4600 | flag_peephole2 = 1; |
4291d9c8 RS |
4601 | #ifdef INSN_SCHEDULING |
4602 | flag_schedule_insns = 1; | |
4603 | flag_schedule_insns_after_reload = 1; | |
4604 | #endif | |
8c660648 | 4605 | flag_regmove = 1; |
3f9a83a9 | 4606 | flag_strict_aliasing = 1; |
b6d24183 | 4607 | flag_delete_null_pointer_checks = 1; |
4291d9c8 RS |
4608 | } |
4609 | ||
7e89c3a3 RK |
4610 | if (optimize >= 3) |
4611 | { | |
4612 | flag_inline_functions = 1; | |
4613 | } | |
4614 | ||
efa3896a GK |
4615 | if (optimize < 2 || optimize_size) |
4616 | { | |
4617 | align_loops = 1; | |
4618 | align_jumps = 1; | |
4619 | align_labels = 1; | |
4620 | align_functions = 1; | |
4621 | } | |
4622 | ||
c1da383f DE |
4623 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
4624 | modify it. */ | |
4625 | target_flags = 0; | |
4626 | set_target_switch (""); | |
4627 | ||
4291d9c8 RS |
4628 | #ifdef OPTIMIZATION_OPTIONS |
4629 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 4630 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
4631 | #endif |
4632 | ||
4633 | /* Initialize register usage now so switches may override. */ | |
4634 | init_reg_sets (); | |
4635 | ||
39dd8003 NC |
4636 | /* Perform normal command line switch decoding. */ |
4637 | for (i = 1; i < argc;) | |
4291d9c8 | 4638 | { |
39dd8003 NC |
4639 | unsigned lang_processed; |
4640 | unsigned indep_processed; | |
f88b51fc | 4641 | |
39dd8003 NC |
4642 | /* Give the language a chance to decode the option for itself. */ |
4643 | lang_processed = lang_decode_option (argc - i, argv + i); | |
43a8f6d5 | 4644 | |
39dd8003 NC |
4645 | /* Now see if the option also has a language independent meaning. |
4646 | Some options are both language specific and language independent, | |
4647 | eg --help. It is possible that there might be options that should | |
4648 | only be decoded in a language independent way if the were not | |
4649 | decoded in a langauge specific way, which is why 'lang_processed' | |
4650 | is passed in. */ | |
5dff71ed JM |
4651 | indep_processed = independent_decode_option (argc - i, argv + i, |
4652 | lang_processed); | |
39dd8003 NC |
4653 | |
4654 | if (lang_processed || indep_processed) | |
5dff71ed JM |
4655 | i += (lang_processed > indep_processed |
4656 | ? lang_processed : indep_processed); | |
39dd8003 | 4657 | else |
43a8f6d5 | 4658 | { |
0c70c30f NC |
4659 | const char * option = NULL; |
4660 | const char * lang = NULL; | |
4661 | unsigned int j; | |
4662 | ||
4663 | /* It is possible that the command line switch is not valid for the | |
4664 | current language, but it is valid for another language. In order | |
4665 | to be compatible with previous versions of the compiler (which | |
4666 | did not issue an error message in this case) we check for this | |
4667 | possibilty here. If we do find a match, then if extra_warnings | |
4668 | is set we generate a warning message, otherwise we will just | |
4669 | ignore the option. */ | |
4670 | for (j = 0; j < NUM_ELEM (documented_lang_options); j++) | |
4671 | { | |
4672 | option = documented_lang_options[j].option; | |
4673 | ||
4674 | if (option == NULL) | |
4675 | lang = documented_lang_options[j].description; | |
4676 | else if (! strncmp (argv[i], option, strlen (option))) | |
4677 | break; | |
4678 | } | |
4679 | ||
bb51178f | 4680 | if (j != NUM_ELEM (documented_lang_options)) |
0c70c30f NC |
4681 | { |
4682 | if (extra_warnings) | |
4683 | { | |
4684 | warning ("Ignoring command line option '%s'", argv[i]); | |
4685 | if (lang) | |
4686 | warning ("\ | |
4687 | (It is valid for %s but not the selected langauge)", lang); | |
4688 | } | |
4689 | } | |
4690 | else | |
4691 | error ("Unrecognised option `%s'", argv[i]); | |
4692 | ||
43a8f6d5 JM |
4693 | i++; |
4694 | } | |
4291d9c8 RS |
4695 | } |
4696 | ||
f602c208 RK |
4697 | /* Checker uses the frame pointer. */ |
4698 | if (flag_check_memory_usage) | |
4699 | flag_omit_frame_pointer = 0; | |
4700 | ||
f246a305 RS |
4701 | if (optimize == 0) |
4702 | { | |
a2468e45 BK |
4703 | /* Inlining does not work if not optimizing, |
4704 | so force it not to be done. */ | |
f246a305 RS |
4705 | flag_no_inline = 1; |
4706 | warn_inline = 0; | |
a2468e45 BK |
4707 | |
4708 | /* The c_decode_option and lang_decode_option functions set | |
4709 | this to `2' if -Wall is used, so we can avoid giving out | |
4710 | lots of errors for people who don't realize what -Wall does. */ | |
4711 | if (warn_uninitialized == 1) | |
4712 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
4713 | } |
4714 | ||
4291d9c8 RS |
4715 | #ifdef OVERRIDE_OPTIONS |
4716 | /* Some machines may reject certain combinations of options. */ | |
4717 | OVERRIDE_OPTIONS; | |
4718 | #endif | |
4719 | ||
d1485032 JM |
4720 | if (exceptions_via_longjmp == 2) |
4721 | { | |
4722 | #ifdef DWARF2_UNWIND_INFO | |
4723 | exceptions_via_longjmp = ! DWARF2_UNWIND_INFO; | |
4724 | #else | |
4725 | exceptions_via_longjmp = 1; | |
4726 | #endif | |
4727 | } | |
4728 | ||
efa3896a GK |
4729 | /* Set up the align_*_log variables, defaulting them to 1 if they |
4730 | were still unset. */ | |
4731 | if (align_loops <= 0) align_loops = 1; | |
4732 | align_loops_log = floor_log2 (align_loops*2-1); | |
4733 | if (align_jumps <= 0) align_jumps = 1; | |
4734 | align_jumps_log = floor_log2 (align_jumps*2-1); | |
4735 | if (align_labels <= 0) align_labels = 1; | |
4736 | align_labels_log = floor_log2 (align_labels*2-1); | |
4737 | if (align_functions <= 0) align_functions = 1; | |
4738 | align_functions_log = floor_log2 (align_functions*2-1); | |
4739 | ||
ec6c615d RK |
4740 | if (profile_block_flag == 3) |
4741 | { | |
4742 | warning ("`-ax' and `-a' are conflicting options. `-a' ignored."); | |
4743 | profile_block_flag = 2; | |
4744 | } | |
4745 | ||
4291d9c8 RS |
4746 | /* Unrolling all loops implies that standard loop unrolling must also |
4747 | be done. */ | |
4748 | if (flag_unroll_all_loops) | |
4749 | flag_unroll_loops = 1; | |
4750 | /* Loop unrolling requires that strength_reduction be on also. Silently | |
4751 | turn on strength reduction here if it isn't already on. Also, the loop | |
4752 | unrolling code assumes that cse will be run after loop, so that must | |
4753 | be turned on also. */ | |
4754 | if (flag_unroll_loops) | |
4755 | { | |
4756 | flag_strength_reduce = 1; | |
4757 | flag_rerun_cse_after_loop = 1; | |
4758 | } | |
4759 | ||
4760 | /* Warn about options that are not supported on this machine. */ | |
4761 | #ifndef INSN_SCHEDULING | |
4762 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
4763 | warning ("instruction scheduling not supported on this target machine"); | |
4764 | #endif | |
4765 | #ifndef DELAY_SLOTS | |
4766 | if (flag_delayed_branch) | |
4767 | warning ("this target machine does not have delayed branches"); | |
4768 | #endif | |
4769 | ||
19283265 RH |
4770 | user_label_prefix = USER_LABEL_PREFIX; |
4771 | if (flag_leading_underscore != -1) | |
4772 | { | |
4773 | /* If the default prefix is more complicated than "" or "_", | |
4774 | issue a warning and ignore this option. */ | |
4775 | if (user_label_prefix[0] == 0 || | |
4776 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
4777 | { | |
4778 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
4779 | } | |
4780 | else | |
4781 | warning ("-f%sleading-underscore not supported on this target machine", | |
4782 | flag_leading_underscore ? "" : "no-"); | |
4783 | } | |
4784 | ||
4291d9c8 RS |
4785 | /* If we are in verbose mode, write out the version and maybe all the |
4786 | option flags in use. */ | |
4787 | if (version_flag) | |
4788 | { | |
3d5cdd42 | 4789 | print_version (stderr, ""); |
4291d9c8 | 4790 | if (! quiet_flag) |
3d5cdd42 | 4791 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
4792 | } |
4793 | ||
4291d9c8 RS |
4794 | compile_file (filename); |
4795 | ||
58f4af8e | 4796 | #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX) |
4291d9c8 RS |
4797 | if (flag_print_mem) |
4798 | { | |
4799 | char *lim = (char *) sbrk (0); | |
4800 | ||
6ed551b4 | 4801 | fnotice (stderr, "Data size %ld.\n", (long) (lim - (char *) &environ)); |
4291d9c8 RS |
4802 | fflush (stderr); |
4803 | ||
e9a25f70 | 4804 | #ifndef __MSDOS__ |
4291d9c8 RS |
4805 | #ifdef USG |
4806 | system ("ps -l 1>&2"); | |
4807 | #else /* not USG */ | |
4808 | system ("ps v"); | |
4809 | #endif /* not USG */ | |
e9a25f70 | 4810 | #endif |
4291d9c8 | 4811 | } |
58f4af8e | 4812 | #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */ |
4291d9c8 RS |
4813 | |
4814 | if (errorcount) | |
7adfcfed | 4815 | return (FATAL_EXIT_CODE); |
4291d9c8 | 4816 | if (sorrycount) |
7adfcfed KG |
4817 | return (FATAL_EXIT_CODE); |
4818 | return (SUCCESS_EXIT_CODE); | |
43a8f6d5 | 4819 | } |
4291d9c8 RS |
4820 | \f |
4821 | /* Decode -m switches. */ | |
4291d9c8 RS |
4822 | /* Decode the switch -mNAME. */ |
4823 | ||
114791ea | 4824 | static void |
4291d9c8 | 4825 | set_target_switch (name) |
87e11268 | 4826 | const char *name; |
4291d9c8 | 4827 | { |
85066503 | 4828 | register size_t j; |
ab87f8c8 | 4829 | int valid_target_option = 0; |
4291d9c8 RS |
4830 | |
4831 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
4832 | if (!strcmp (target_switches[j].name, name)) | |
4833 | { | |
4834 | if (target_switches[j].value < 0) | |
4835 | target_flags &= ~-target_switches[j].value; | |
4836 | else | |
4837 | target_flags |= target_switches[j].value; | |
ab87f8c8 | 4838 | valid_target_option = 1; |
4291d9c8 RS |
4839 | } |
4840 | ||
4841 | #ifdef TARGET_OPTIONS | |
ab87f8c8 | 4842 | if (!valid_target_option) |
4291d9c8 RS |
4843 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) |
4844 | { | |
4845 | int len = strlen (target_options[j].prefix); | |
4846 | if (!strncmp (target_options[j].prefix, name, len)) | |
4847 | { | |
4848 | *target_options[j].variable = name + len; | |
ab87f8c8 | 4849 | valid_target_option = 1; |
4291d9c8 RS |
4850 | } |
4851 | } | |
4852 | #endif | |
4853 | ||
ab87f8c8 | 4854 | if (!valid_target_option) |
4291d9c8 RS |
4855 | error ("Invalid option `%s'", name); |
4856 | } | |
4857 | \f | |
3d5cdd42 DE |
4858 | /* Print version information to FILE. |
4859 | Each line begins with INDENT (for the case where FILE is the | |
4860 | assembler output file). */ | |
4291d9c8 | 4861 | |
114791ea | 4862 | static void |
3d5cdd42 DE |
4863 | print_version (file, indent) |
4864 | FILE *file; | |
87e11268 | 4865 | const char *indent; |
4291d9c8 | 4866 | { |
3d5cdd42 | 4867 | #ifndef __VERSION__ |
ab87f8c8 | 4868 | #define __VERSION__ "[?]" |
3d5cdd42 | 4869 | #endif |
ab87f8c8 JL |
4870 | fnotice (file, |
4871 | #ifdef __GNUC__ | |
4872 | "%s%s%s version %s (%s) compiled by GNU C version %s.\n" | |
3d5cdd42 | 4873 | #else |
ab87f8c8 | 4874 | "%s%s%s version %s (%s) compiled by CC.\n" |
3d5cdd42 | 4875 | #endif |
ab87f8c8 JL |
4876 | , indent, *indent != 0 ? " " : "", |
4877 | language_string, version_string, TARGET_NAME, __VERSION__); | |
3d5cdd42 | 4878 | } |
4291d9c8 | 4879 | |
3d5cdd42 | 4880 | /* Print an option value and return the adjusted position in the line. |
309a8875 DE |
4881 | ??? We don't handle error returns from fprintf (disk full); presumably |
4882 | other code will catch a disk full though. */ | |
4291d9c8 | 4883 | |
114791ea | 4884 | static int |
3d5cdd42 DE |
4885 | print_single_switch (file, pos, max, indent, sep, term, type, name) |
4886 | FILE *file; | |
4887 | int pos, max; | |
87e11268 | 4888 | const char *indent, *sep, *term, *type, *name; |
3d5cdd42 | 4889 | { |
309a8875 DE |
4890 | /* The ultrix fprintf returns 0 on success, so compute the result we want |
4891 | here since we need it for the following test. */ | |
4892 | int len = strlen (sep) + strlen (type) + strlen (name); | |
4893 | ||
3d5cdd42 | 4894 | if (pos != 0 |
309a8875 | 4895 | && pos + len > max) |
4291d9c8 | 4896 | { |
3d5cdd42 DE |
4897 | fprintf (file, "%s", term); |
4898 | pos = 0; | |
4291d9c8 | 4899 | } |
3d5cdd42 DE |
4900 | if (pos == 0) |
4901 | { | |
309a8875 DE |
4902 | fprintf (file, "%s", indent); |
4903 | pos = strlen (indent); | |
3d5cdd42 | 4904 | } |
309a8875 DE |
4905 | fprintf (file, "%s%s%s", sep, type, name); |
4906 | pos += len; | |
3d5cdd42 | 4907 | return pos; |
4291d9c8 RS |
4908 | } |
4909 | ||
3d5cdd42 DE |
4910 | /* Print active target switches to FILE. |
4911 | POS is the current cursor position and MAX is the size of a "line". | |
4912 | Each line begins with INDENT and ends with TERM. | |
4913 | Each switch is separated from the next by SEP. */ | |
4291d9c8 | 4914 | |
25074193 | 4915 | static void |
3d5cdd42 DE |
4916 | print_switch_values (file, pos, max, indent, sep, term) |
4917 | FILE *file; | |
4918 | int pos, max; | |
87e11268 | 4919 | const char *indent, *sep, *term; |
4291d9c8 | 4920 | { |
85066503 | 4921 | size_t j; |
3d5cdd42 DE |
4922 | char **p; |
4923 | ||
4924 | /* Print the options as passed. */ | |
4291d9c8 | 4925 | |
3d5cdd42 | 4926 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
ab87f8c8 | 4927 | _("options passed: "), ""); |
3d5cdd42 | 4928 | |
520e7ff5 | 4929 | for (p = &save_argv[1]; *p != NULL; p++) |
3d5cdd42 DE |
4930 | if (**p == '-') |
4931 | { | |
4932 | /* Ignore these. */ | |
520e7ff5 DE |
4933 | if (strcmp (*p, "-o") == 0) |
4934 | { | |
4935 | if (p[1] != NULL) | |
4936 | p++; | |
4937 | continue; | |
4938 | } | |
3d5cdd42 DE |
4939 | if (strcmp (*p, "-quiet") == 0) |
4940 | continue; | |
4941 | if (strcmp (*p, "-version") == 0) | |
4942 | continue; | |
4943 | if ((*p)[1] == 'd') | |
4944 | continue; | |
4945 | ||
4946 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
4947 | } | |
4948 | if (pos > 0) | |
4949 | fprintf (file, "%s", term); | |
4950 | ||
4951 | /* Print the -f and -m options that have been enabled. | |
4952 | We don't handle language specific options but printing argv | |
4953 | should suffice. */ | |
4954 | ||
4955 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
ab87f8c8 | 4956 | _("options enabled: "), ""); |
4291d9c8 RS |
4957 | |
4958 | for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++) | |
4959 | if (*f_options[j].variable == f_options[j].on_value) | |
3d5cdd42 DE |
4960 | pos = print_single_switch (file, pos, max, indent, sep, term, |
4961 | "-f", f_options[j].string); | |
4291d9c8 | 4962 | |
3d5cdd42 | 4963 | /* Print target specific options. */ |
4291d9c8 RS |
4964 | |
4965 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
4966 | if (target_switches[j].name[0] != '\0' | |
4967 | && target_switches[j].value > 0 | |
4968 | && ((target_switches[j].value & target_flags) | |
4969 | == target_switches[j].value)) | |
3d5cdd42 DE |
4970 | { |
4971 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4972 | "-m", target_switches[j].name); | |
3d5cdd42 DE |
4973 | } |
4974 | ||
4975 | #ifdef TARGET_OPTIONS | |
4976 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) | |
4977 | if (*target_options[j].variable != NULL) | |
4978 | { | |
4979 | char prefix[256]; | |
4980 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
4981 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4982 | prefix, *target_options[j].variable); | |
4983 | } | |
4984 | #endif | |
4291d9c8 | 4985 | |
3d5cdd42 | 4986 | fprintf (file, "%s", term); |
4291d9c8 | 4987 | } |
9a666dda JM |
4988 | |
4989 | /* Record the beginning of a new source file, named FILENAME. */ | |
4990 | ||
4991 | void | |
4992 | debug_start_source_file (filename) | |
54ea1de9 | 4993 | register char *filename ATTRIBUTE_UNUSED; |
9a666dda JM |
4994 | { |
4995 | #ifdef DBX_DEBUGGING_INFO | |
4996 | if (write_symbols == DBX_DEBUG) | |
4997 | dbxout_start_new_source_file (filename); | |
4998 | #endif | |
4999 | #ifdef DWARF_DEBUGGING_INFO | |
5000 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5001 | && write_symbols == DWARF_DEBUG) | |
5002 | dwarfout_start_new_source_file (filename); | |
5003 | #endif /* DWARF_DEBUGGING_INFO */ | |
5004 | #ifdef DWARF2_DEBUGGING_INFO | |
5005 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5006 | && write_symbols == DWARF2_DEBUG) | |
5007 | dwarf2out_start_source_file (filename); | |
5008 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
5009 | #ifdef SDB_DEBUGGING_INFO |
5010 | if (write_symbols == SDB_DEBUG) | |
5011 | sdbout_start_new_source_file (filename); | |
5012 | #endif | |
9a666dda JM |
5013 | } |
5014 | ||
5015 | /* Record the resumption of a source file. LINENO is the line number in | |
5016 | the source file we are returning to. */ | |
5017 | ||
5018 | void | |
5019 | debug_end_source_file (lineno) | |
c84e2712 | 5020 | register unsigned lineno ATTRIBUTE_UNUSED; |
9a666dda JM |
5021 | { |
5022 | #ifdef DBX_DEBUGGING_INFO | |
5023 | if (write_symbols == DBX_DEBUG) | |
5024 | dbxout_resume_previous_source_file (); | |
5025 | #endif | |
5026 | #ifdef DWARF_DEBUGGING_INFO | |
5027 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5028 | && write_symbols == DWARF_DEBUG) | |
5029 | dwarfout_resume_previous_source_file (lineno); | |
5030 | #endif /* DWARF_DEBUGGING_INFO */ | |
5031 | #ifdef DWARF2_DEBUGGING_INFO | |
5032 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5033 | && write_symbols == DWARF2_DEBUG) | |
5034 | dwarf2out_end_source_file (); | |
5035 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
5036 | #ifdef SDB_DEBUGGING_INFO |
5037 | if (write_symbols == SDB_DEBUG) | |
5038 | sdbout_resume_previous_source_file (); | |
5039 | #endif | |
9a666dda JM |
5040 | } |
5041 | ||
5042 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
5043 | the tail part of the directive line, i.e. the part which is past the | |
5044 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
5045 | ||
5046 | void | |
5047 | debug_define (lineno, buffer) | |
91813b28 KG |
5048 | register unsigned lineno ATTRIBUTE_UNUSED; |
5049 | register char *buffer ATTRIBUTE_UNUSED; | |
9a666dda JM |
5050 | { |
5051 | #ifdef DWARF_DEBUGGING_INFO | |
5052 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5053 | && write_symbols == DWARF_DEBUG) | |
5054 | dwarfout_define (lineno, buffer); | |
5055 | #endif /* DWARF_DEBUGGING_INFO */ | |
5056 | #ifdef DWARF2_DEBUGGING_INFO | |
5057 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5058 | && write_symbols == DWARF2_DEBUG) | |
5059 | dwarf2out_define (lineno, buffer); | |
5060 | #endif /* DWARF2_DEBUGGING_INFO */ | |
5061 | } | |
5062 | ||
5063 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
5064 | the tail part of the directive line, i.e. the part which is past the | |
5065 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
5066 | ||
5067 | void | |
5068 | debug_undef (lineno, buffer) | |
91813b28 KG |
5069 | register unsigned lineno ATTRIBUTE_UNUSED; |
5070 | register char *buffer ATTRIBUTE_UNUSED; | |
9a666dda JM |
5071 | { |
5072 | #ifdef DWARF_DEBUGGING_INFO | |
5073 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5074 | && write_symbols == DWARF_DEBUG) | |
5075 | dwarfout_undef (lineno, buffer); | |
5076 | #endif /* DWARF_DEBUGGING_INFO */ | |
5077 | #ifdef DWARF2_DEBUGGING_INFO | |
5078 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
5079 | && write_symbols == DWARF2_DEBUG) | |
5080 | dwarf2out_undef (lineno, buffer); | |
5081 | #endif /* DWARF2_DEBUGGING_INFO */ | |
5082 | } |