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Commit | Line | Data |
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5e6908ea | 1 | /* Top level of GCC compilers (cc1, cc1plus, etc.) |
4559fd9e | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
ad616de1 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
4291d9c8 | 4 | |
1322177d | 5 | This file is part of GCC. |
4291d9c8 | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
4291d9c8 | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4291d9c8 RS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
4291d9c8 | 21 | |
4291d9c8 RS |
22 | /* This is the top level of cc1/c++. |
23 | It parses command args, opens files, invokes the various passes | |
24 | in the proper order, and counts the time used by each. | |
25 | Error messages and low-level interface to malloc also handled here. */ | |
26 | ||
27 | #include "config.h" | |
670ee920 KG |
28 | #undef FLOAT /* This is for hpux. They should change hpux. */ |
29 | #undef FFS /* Some systems define this in param.h. */ | |
30 | #include "system.h" | |
4977bab6 ZW |
31 | #include "coretypes.h" |
32 | #include "tm.h" | |
4291d9c8 | 33 | #include <signal.h> |
956d6950 JL |
34 | |
35 | #ifdef HAVE_SYS_RESOURCE_H | |
36 | # include <sys/resource.h> | |
37 | #endif | |
38 | ||
39 | #ifdef HAVE_SYS_TIMES_H | |
40 | # include <sys/times.h> | |
eb910b5a | 41 | #endif |
4291d9c8 | 42 | |
2ae5c785 | 43 | #include "line-map.h" |
4291d9c8 RS |
44 | #include "input.h" |
45 | #include "tree.h" | |
a757585a | 46 | #include "version.h" |
4291d9c8 | 47 | #include "rtl.h" |
6baf1cc8 | 48 | #include "tm_p.h" |
4291d9c8 RS |
49 | #include "flags.h" |
50 | #include "insn-attr.h" | |
e5e809f4 | 51 | #include "insn-config.h" |
0dd0e980 | 52 | #include "insn-flags.h" |
23280139 | 53 | #include "hard-reg-set.h" |
e5e809f4 | 54 | #include "recog.h" |
e14417fa | 55 | #include "output.h" |
3d195391 | 56 | #include "except.h" |
49ad7cfa | 57 | #include "function.h" |
a0c8e1b2 | 58 | #include "toplev.h" |
114791ea | 59 | #include "expr.h" |
b1eeb243 | 60 | #include "basic-block.h" |
ab87f8c8 | 61 | #include "intl.h" |
0a25f1f5 | 62 | #include "ggc.h" |
6a2cc2ac | 63 | #include "graph.h" |
d0af450d | 64 | #include "regs.h" |
2a9a326b | 65 | #include "timevar.h" |
764dbbf2 | 66 | #include "diagnostic.h" |
c6d9a88c | 67 | #include "params.h" |
8461e984 | 68 | #include "reload.h" |
5262d6b6 | 69 | #include "dwarf2asm.h" |
c0e7830f | 70 | #include "integrate.h" |
efdc7e19 | 71 | #include "real.h" |
a51d908e | 72 | #include "debug.h" |
7c262518 | 73 | #include "target.h" |
d23c55c2 | 74 | #include "langhooks.h" |
0478a14c | 75 | #include "cfglayout.h" |
3d436d2a | 76 | #include "cfgloop.h" |
476d9098 | 77 | #include "hosthooks.h" |
b255a036 | 78 | #include "cgraph.h" |
2772ef3e | 79 | #include "opts.h" |
5b0e2409 | 80 | #include "coverage.h" |
fca9dc00 | 81 | #include "value-prof.h" |
40ca90bf | 82 | #include "alloc-pool.h" |
ccab73c3 | 83 | #include "tree-mudflap.h" |
f246a305 | 84 | |
76ead72b RL |
85 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
86 | #include "dwarf2out.h" | |
87 | #endif | |
88 | ||
4f70758f | 89 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
90 | #include "dbxout.h" |
91 | #endif | |
92 | ||
93 | #ifdef SDB_DEBUGGING_INFO | |
94 | #include "sdbout.h" | |
95 | #endif | |
440aabf8 NB |
96 | |
97 | #ifdef XCOFF_DEBUGGING_INFO | |
98 | #include "xcoffout.h" /* Needed for external data | |
99 | declarations for e.g. AIX 4.x. */ | |
100 | #endif | |
ddc9542b | 101 | |
b86f6cd9 | 102 | static void general_init (const char *); |
e25a75e6 AJ |
103 | static void do_compile (void); |
104 | static void process_options (void); | |
105 | static void backend_init (void); | |
106 | static int lang_dependent_init (const char *); | |
107 | static void init_asm_output (const char *); | |
108 | static void finalize (void); | |
109 | ||
e25a75e6 AJ |
110 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
111 | static void setup_core_dumping (void); | |
112 | static void compile_file (void); | |
e25a75e6 | 113 | |
e25a75e6 AJ |
114 | static int print_single_switch (FILE *, int, int, const char *, |
115 | const char *, const char *, | |
116 | const char *, const char *); | |
117 | static void print_switch_values (FILE *, int, int, const char *, | |
118 | const char *, const char *); | |
735a0e33 | 119 | |
ff45c01e NB |
120 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
121 | static int set_yydebug; | |
122 | ||
4bfec483 NB |
123 | /* True if we don't need a backend (e.g. preprocessing only). */ |
124 | static bool no_backend; | |
125 | ||
3d5cdd42 DE |
126 | /* Length of line when printing switch values. */ |
127 | #define MAX_LINE 75 | |
128 | ||
4291d9c8 RS |
129 | /* Name of program invoked, sans directories. */ |
130 | ||
7adfcfed | 131 | const char *progname; |
4291d9c8 | 132 | |
b86f6cd9 NB |
133 | /* Copy of argument vector to toplev_main. */ |
134 | static const char **save_argv; | |
ddc9542b | 135 | |
4291d9c8 RS |
136 | /* Name of top-level original source file (what was input to cpp). |
137 | This comes from the #-command at the beginning of the actual input. | |
138 | If there isn't any there, then this is the cc1 input file name. */ | |
139 | ||
3b304f5b | 140 | const char *main_input_filename; |
4291d9c8 | 141 | |
c1667470 PB |
142 | #ifndef USE_MAPPED_LOCATION |
143 | location_t unknown_location = { NULL, 0 }; | |
144 | #endif | |
145 | ||
38d396e5 PB |
146 | /* Used to enable -fvar-tracking, -fweb and -frename-registers according |
147 | to optimize and default_debug_hooks in process_options (). */ | |
148 | #define AUTODETECT_FLAG_VAR_TRACKING 2 | |
149 | ||
6060edcb | 150 | /* Current position in real source file. */ |
4291d9c8 | 151 | |
6060edcb | 152 | location_t input_location; |
4291d9c8 | 153 | |
50f59cd7 PB |
154 | struct line_maps line_table; |
155 | ||
f1db3576 JL |
156 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
157 | int no_new_pseudos; | |
158 | ||
4291d9c8 RS |
159 | /* Stack of currently pending input files. */ |
160 | ||
161 | struct file_stack *input_file_stack; | |
162 | ||
163 | /* Incremented on each change to input_file_stack. */ | |
164 | int input_file_stack_tick; | |
165 | ||
4291d9c8 RS |
166 | /* Name to use as base of names for dump output files. */ |
167 | ||
87e11268 | 168 | const char *dump_base_name; |
4291d9c8 | 169 | |
ea67fe71 NS |
170 | /* Name to use as a base for auxiliary output files. */ |
171 | ||
d185d268 | 172 | const char *aux_base_name; |
ea67fe71 | 173 | |
4291d9c8 RS |
174 | /* Bit flags that specify the machine subtype we are compiling for. |
175 | Bits are tested using macros TARGET_... defined in the tm.h file | |
176 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
177 | ||
178 | extern int target_flags; | |
179 | ||
a27fb29b RS |
180 | /* A mask of target_flags that includes bit X if X was set or cleared |
181 | on the command line. */ | |
182 | ||
183 | int target_flags_explicit; | |
184 | ||
a51d908e NB |
185 | /* Debug hooks - dependent upon command line options. */ |
186 | ||
df38ffef | 187 | const struct gcc_debug_hooks *debug_hooks; |
a51d908e | 188 | |
38d396e5 PB |
189 | /* Debug hooks - target default. */ |
190 | ||
191 | static const struct gcc_debug_hooks *default_debug_hooks; | |
192 | ||
61098249 RH |
193 | /* Other flags saying which kinds of debugging dump have been requested. */ |
194 | ||
195 | int rtl_dump_and_exit; | |
196 | int flag_print_asm_name; | |
735a0e33 | 197 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
198 | |
199 | /* Name for output file of assembly code, specified with -o. */ | |
200 | ||
d185d268 | 201 | const char *asm_file_name; |
4291d9c8 | 202 | |
4291d9c8 RS |
203 | /* Nonzero means do optimizations. -O. |
204 | Particular numeric values stand for particular amounts of optimization; | |
205 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
206 | ones are not controlled directly by this variable. Instead, they are | |
207 | controlled by individual `flag_...' variables that are defaulted | |
208 | based on this variable. */ | |
209 | ||
210 | int optimize = 0; | |
211 | ||
c6aded7c | 212 | /* Nonzero means optimize for size. -Os. |
0e9e1e0a KH |
213 | The only valid values are zero and nonzero. When optimize_size is |
214 | nonzero, optimize defaults to 2, but certain individual code | |
c6aded7c AG |
215 | bloating optimizations are disabled. */ |
216 | ||
217 | int optimize_size = 0; | |
218 | ||
00262c8a ML |
219 | /* The FUNCTION_DECL for the function currently being compiled, |
220 | or 0 if between functions. */ | |
221 | tree current_function_decl; | |
222 | ||
375d2edc | 223 | /* Set to the FUNC_BEGIN label of the current function, or NULL |
00262c8a | 224 | if none. */ |
375d2edc | 225 | const char * current_function_func_begin_label; |
00262c8a | 226 | |
4291d9c8 RS |
227 | /* Temporarily suppress certain warnings. |
228 | This is set while reading code from a system header file. */ | |
229 | ||
230 | int in_system_header = 0; | |
231 | ||
272d0bee | 232 | /* Nonzero means to collect statistics which might be expensive |
0e5921e8 ZW |
233 | and to print them when we are done. */ |
234 | int flag_detailed_statistics = 0; | |
235 | ||
4ed43216 | 236 | /* A random sequence of characters, unless overridden by user. */ |
c07e5477 NS |
237 | const char *flag_random_seed; |
238 | ||
239 | /* A local time stamp derived from the time of compilation. It will be | |
240 | zero if the system cannot provide a time. It will be -1u, if the | |
241 | user has specified a particular random seed. */ | |
242 | unsigned local_tick; | |
243 | ||
4291d9c8 RS |
244 | /* -f flags. */ |
245 | ||
246 | /* Nonzero means `char' should be signed. */ | |
247 | ||
248 | int flag_signed_char; | |
249 | ||
32770746 PB |
250 | /* Nonzero means give an enum type only as many bytes as it needs. A value |
251 | of 2 means it has not yet been initialized. */ | |
4291d9c8 RS |
252 | |
253 | int flag_short_enums; | |
254 | ||
958ec8ca JW |
255 | /* Nonzero if structures and unions should be returned in memory. |
256 | ||
257 | This should only be defined if compatibility with another compiler or | |
258 | with an ABI is needed, because it results in slower code. */ | |
259 | ||
260 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
261 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
262 | #endif | |
263 | ||
4291d9c8 RS |
264 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
265 | ||
958ec8ca | 266 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 | 267 | |
c64f913e CB |
268 | /* 0 means straightforward implementation of complex divide acceptable. |
269 | 1 means wide ranges of inputs must work for complex divide. | |
7e7e470f | 270 | 2 means C99-like requirements for complex multiply and divide. */ |
c64f913e | 271 | |
c7463669 | 272 | int flag_complex_method = 1; |
c64f913e | 273 | |
2cb921f4 AH |
274 | /* Nonzero means that we don't want inlining by virtue of -fno-inline, |
275 | not just because the tree inliner turned us off. */ | |
276 | ||
b0148884 | 277 | int flag_really_no_inline = 2; |
2cb921f4 | 278 | |
4291d9c8 RS |
279 | /* Nonzero means we should be saving declaration info into a .X file. */ |
280 | ||
281 | int flag_gen_aux_info = 0; | |
282 | ||
f246a305 RS |
283 | /* Specified name of aux-info file. */ |
284 | ||
d185d268 | 285 | const char *aux_info_file_name; |
f246a305 | 286 | |
24a4dd31 JJ |
287 | /* Nonzero if we are compiling code for a shared library, zero for |
288 | executable. */ | |
289 | ||
290 | int flag_shlib; | |
291 | ||
3d78f2e9 RH |
292 | /* Set to the default thread-local storage (tls) model to use. */ |
293 | ||
755ac5d4 | 294 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
3d78f2e9 | 295 | |
4291d9c8 RS |
296 | /* Nonzero means change certain warnings into errors. |
297 | Usually these are warnings about failure to conform to some standard. */ | |
298 | ||
299 | int flag_pedantic_errors = 0; | |
300 | ||
3d5cdd42 DE |
301 | /* -dA causes debug commentary information to be produced in |
302 | the generated assembly code (to make it more readable). This option | |
303 | is generally only of use to those who actually need to read the | |
304 | generated assembly code (perhaps while debugging the compiler itself). | |
305 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
306 | to be a catchall for printing debug information in the assembler file. */ | |
307 | ||
308 | int flag_debug_asm = 0; | |
9a631e8e | 309 | |
c349e40b SC |
310 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
311 | ||
312 | int flag_dump_rtl_in_asm = 0; | |
313 | ||
a157febd GK |
314 | /* When non-NULL, indicates that whenever space is allocated on the |
315 | stack, the resulting stack pointer must not pass this | |
316 | address---that is, for stacks that grow downward, the stack pointer | |
317 | must always be greater than or equal to this address; for stacks | |
318 | that grow upward, the stack pointer must be less than this address. | |
319 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
320 | the support provided depends on the backend. */ | |
321 | rtx stack_limit_rtx; | |
322 | ||
673b5311 MM |
323 | /* If one, renumber instruction UIDs to reduce the number of |
324 | unused UIDs if there are a lot of instructions. If greater than | |
325 | one, unconditionally renumber instruction UIDs. */ | |
326 | int flag_renumber_insns = 1; | |
327 | ||
014a1138 JZ |
328 | /* Nonzero if we should track variables. When |
329 | flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING it will be set according | |
330 | to optimize, debug_info_level and debug_hooks in process_options (). */ | |
014a1138 JZ |
331 | int flag_var_tracking = AUTODETECT_FLAG_VAR_TRACKING; |
332 | ||
9fb32434 CT |
333 | /* True if the user has tagged the function with the 'section' |
334 | attribute. */ | |
335 | ||
336 | bool user_defined_section_attribute = false; | |
337 | ||
854a97f0 KH |
338 | /* Values of the -falign-* flags: how much to align labels in code. |
339 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
340 | For each variable, there is an _log variant which is the power |
341 | of two not less than the variable, for .align output. */ | |
342 | ||
efa3896a | 343 | int align_loops_log; |
2cca7283 | 344 | int align_loops_max_skip; |
efa3896a | 345 | int align_jumps_log; |
2cca7283 | 346 | int align_jumps_max_skip; |
efa3896a | 347 | int align_labels_log; |
2cca7283 | 348 | int align_labels_max_skip; |
efa3896a GK |
349 | int align_functions_log; |
350 | ||
f963b5d9 RS |
351 | /* Like align_functions_log above, but used by front-ends to force the |
352 | minimum function alignment. Zero means no alignment is forced. */ | |
353 | int force_align_functions_log; | |
354 | ||
b8468bc7 NC |
355 | typedef struct |
356 | { | |
c083a819 KG |
357 | const char *const string; |
358 | int *const variable; | |
359 | const int on_value; | |
b8468bc7 NC |
360 | } |
361 | lang_independent_options; | |
362 | ||
c67e6e14 RS |
363 | /* Nonzero if subexpressions must be evaluated from left-to-right. */ |
364 | int flag_evaluation_order = 0; | |
365 | ||
19283265 | 366 | /* The user symbol prefix after having resolved same. */ |
87e11268 | 367 | const char *user_label_prefix; |
19283265 | 368 | |
c6d9a88c | 369 | static const param_info lang_independent_params[] = { |
e06c0feb NS |
370 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ |
371 | { OPTION, DEFAULT, MIN, MAX, HELP }, | |
c6d9a88c MM |
372 | #include "params.def" |
373 | #undef DEFPARAM | |
e06c0feb | 374 | { NULL, 0, 0, 0, NULL } |
c6d9a88c MM |
375 | }; |
376 | ||
75685792 | 377 | #ifdef TARGET_SWITCHES |
b8468bc7 NC |
378 | /* Here is a table, controlled by the tm.h file, listing each -m switch |
379 | and which bits in `target_switches' it should set or clear. | |
380 | If VALUE is positive, it is bits to set. | |
381 | If VALUE is negative, -VALUE is bits to clear. | |
382 | (The sign bit is not used so there is no confusion.) */ | |
383 | ||
8b60264b | 384 | static const struct |
b8468bc7 | 385 | { |
8b60264b KG |
386 | const char *const name; |
387 | const int value; | |
388 | const char *const description; | |
b8468bc7 | 389 | } |
9cabb1d8 | 390 | target_switches[] = TARGET_SWITCHES; |
75685792 | 391 | #endif |
b8468bc7 NC |
392 | |
393 | /* This table is similar, but allows the switch to have a value. */ | |
394 | ||
395 | #ifdef TARGET_OPTIONS | |
8b60264b | 396 | static const struct |
b8468bc7 | 397 | { |
8b60264b KG |
398 | const char *const prefix; |
399 | const char **const variable; | |
400 | const char *const description; | |
c409ea0d | 401 | const char *const value; |
b8468bc7 | 402 | } |
9cabb1d8 | 403 | target_options[] = TARGET_OPTIONS; |
b8468bc7 | 404 | #endif |
ddc9542b | 405 | |
4291d9c8 RS |
406 | /* Nonzero means warn about function definitions that default the return type |
407 | or that use a null return and have a return-type other than void. */ | |
408 | ||
409 | int warn_return_type; | |
410 | ||
4291d9c8 RS |
411 | /* Output files for assembler code (real compiler output) |
412 | and debugging dumps. */ | |
413 | ||
414 | FILE *asm_out_file; | |
415 | FILE *aux_info_file; | |
c263766c | 416 | FILE *dump_file = NULL; |
29c431a1 | 417 | const char *dump_file_name; |
4291d9c8 | 418 | |
b20d9f0c AO |
419 | /* The current working directory of a translation. It's generally the |
420 | directory from which compilation was initiated, but a preprocessed | |
421 | file may specify the original directory in which it was | |
422 | created. */ | |
423 | ||
424 | static const char *src_pwd; | |
425 | ||
426 | /* Initialize src_pwd with the given string, and return true. If it | |
427 | was already initialized, return false. As a special case, it may | |
428 | be called with a NULL argument to test whether src_pwd has NOT been | |
429 | initialized yet. */ | |
430 | ||
431 | bool | |
432 | set_src_pwd (const char *pwd) | |
433 | { | |
434 | if (src_pwd) | |
0855eab7 CT |
435 | { |
436 | if (strcmp (src_pwd, pwd) == 0) | |
437 | return true; | |
438 | else | |
439 | return false; | |
440 | } | |
b20d9f0c AO |
441 | |
442 | src_pwd = xstrdup (pwd); | |
443 | return true; | |
444 | } | |
445 | ||
446 | /* Return the directory from which the translation unit was initiated, | |
447 | in case set_src_pwd() was not called before to assign it a | |
448 | different value. */ | |
449 | ||
450 | const char * | |
451 | get_src_pwd (void) | |
452 | { | |
453 | if (! src_pwd) | |
5f0c48ed GK |
454 | { |
455 | src_pwd = getpwd (); | |
456 | if (!src_pwd) | |
457 | src_pwd = "."; | |
458 | } | |
b20d9f0c AO |
459 | |
460 | return src_pwd; | |
461 | } | |
462 | ||
0761f342 GDR |
463 | /* Called when the start of a function definition is parsed, |
464 | this function prints on stderr the name of the function. */ | |
465 | void | |
466 | announce_function (tree decl) | |
467 | { | |
468 | if (!quiet_flag) | |
469 | { | |
470 | if (rtl_dump_and_exit) | |
471 | verbatim ("%s ", IDENTIFIER_POINTER (DECL_NAME (decl))); | |
472 | else | |
ae2bcd98 | 473 | verbatim (" %s", lang_hooks.decl_printable_name (decl, 2)); |
0761f342 GDR |
474 | fflush (stderr); |
475 | pp_needs_newline (global_dc->printer) = true; | |
476 | diagnostic_set_last_function (global_dc); | |
477 | } | |
478 | } | |
479 | ||
c07e5477 NS |
480 | /* Set up a default flag_random_seed and local_tick, unless the user |
481 | already specified one. */ | |
482 | ||
483 | static void | |
484 | randomize (void) | |
485 | { | |
486 | if (!flag_random_seed) | |
487 | { | |
488 | unsigned HOST_WIDE_INT value; | |
489 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
fbfb16e2 | 490 | |
c07e5477 NS |
491 | /* Get some more or less random data. */ |
492 | #ifdef HAVE_GETTIMEOFDAY | |
493 | { | |
494 | struct timeval tv; | |
fbfb16e2 | 495 | |
c07e5477 NS |
496 | gettimeofday (&tv, NULL); |
497 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
498 | } | |
499 | #else | |
500 | { | |
c163ddca | 501 | time_t now = time (NULL); |
c07e5477 NS |
502 | |
503 | if (now != (time_t)-1) | |
504 | local_tick = (unsigned) now; | |
505 | } | |
506 | #endif | |
507 | value = local_tick ^ getpid (); | |
fbfb16e2 | 508 | |
c07e5477 NS |
509 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); |
510 | flag_random_seed = random_seed; | |
511 | } | |
e61a2eb7 | 512 | else if (!local_tick) |
c07e5477 NS |
513 | local_tick = -1; |
514 | } | |
515 | ||
516 | ||
132e01b1 TP |
517 | /* Decode the string P as an integral parameter. |
518 | If the string is indeed an integer return its numeric value else | |
192babfd | 519 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
520 | If PNAME is zero just return DEFVAL, do not call error. */ |
521 | ||
132e01b1 | 522 | int |
e25a75e6 | 523 | read_integral_parameter (const char *p, const char *pname, const int defval) |
132e01b1 | 524 | { |
192babfd | 525 | const char *endp = p; |
132e01b1 TP |
526 | |
527 | while (*endp) | |
528 | { | |
0df6c2c7 | 529 | if (ISDIGIT (*endp)) |
132e01b1 TP |
530 | endp++; |
531 | else | |
192babfd TP |
532 | break; |
533 | } | |
534 | ||
535 | if (*endp != 0) | |
536 | { | |
537 | if (pname != 0) | |
971801ff | 538 | error ("invalid option argument %qs", pname); |
192babfd | 539 | return defval; |
132e01b1 TP |
540 | } |
541 | ||
542 | return atoi (p); | |
543 | } | |
4291d9c8 | 544 | |
73d10efa | 545 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
765d98c7 | 546 | If X is 0, return -1. */ |
4291d9c8 RS |
547 | |
548 | int | |
765d98c7 | 549 | floor_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 550 | { |
765d98c7 RH |
551 | int t = 0; |
552 | ||
73d10efa | 553 | if (x == 0) |
4291d9c8 | 554 | return -1; |
765d98c7 RH |
555 | |
556 | #ifdef CLZ_HWI | |
557 | t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); | |
558 | #else | |
559 | if (HOST_BITS_PER_WIDE_INT > 64) | |
144cbad0 | 560 | if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) |
73d10efa | 561 | t += 64; |
765d98c7 | 562 | if (HOST_BITS_PER_WIDE_INT > 32) |
144cbad0 | 563 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) |
73d10efa | 564 | t += 32; |
144cbad0 | 565 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) |
73d10efa | 566 | t += 16; |
144cbad0 | 567 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) |
73d10efa | 568 | t += 8; |
144cbad0 | 569 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) |
73d10efa | 570 | t += 4; |
144cbad0 | 571 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) |
73d10efa | 572 | t += 2; |
144cbad0 | 573 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) |
73d10efa | 574 | t += 1; |
765d98c7 RH |
575 | #endif |
576 | ||
73d10efa | 577 | return t; |
4291d9c8 RS |
578 | } |
579 | ||
73d10efa | 580 | /* Return the logarithm of X, base 2, considering X unsigned, |
765d98c7 | 581 | if X is a power of 2. Otherwise, returns -1. */ |
4291d9c8 RS |
582 | |
583 | int | |
765d98c7 | 584 | exact_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 585 | { |
765d98c7 | 586 | if (x != (x & -x)) |
73d10efa | 587 | return -1; |
765d98c7 RH |
588 | #ifdef CTZ_HWI |
589 | return x ? CTZ_HWI (x) : -1; | |
590 | #else | |
591 | return floor_log2 (x); | |
592 | #endif | |
4291d9c8 RS |
593 | } |
594 | ||
a7023245 | 595 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
c770ac2b ZW |
596 | into ICE messages, which is much more user friendly. In case the |
597 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
4291d9c8 RS |
598 | |
599 | static void | |
e25a75e6 | 600 | crash_signal (int signo) |
4291d9c8 | 601 | { |
c770ac2b | 602 | signal (signo, SIG_DFL); |
52351a5e RE |
603 | |
604 | /* If we crashed while processing an ASM statement, then be a little more | |
605 | graceful. It's most likely the user's fault. */ | |
606 | if (this_is_asm_operands) | |
607 | { | |
608 | output_operand_lossage ("unrecoverable error"); | |
609 | exit (FATAL_EXIT_CODE); | |
610 | } | |
611 | ||
9d533cb5 | 612 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
613 | } |
614 | ||
886e0865 GK |
615 | /* Arrange to dump core on error. (The regular error message is still |
616 | printed first, except in the case of abort().) */ | |
617 | ||
618 | static void | |
e25a75e6 | 619 | setup_core_dumping (void) |
886e0865 GK |
620 | { |
621 | #ifdef SIGABRT | |
622 | signal (SIGABRT, SIG_DFL); | |
623 | #endif | |
624 | #if defined(HAVE_SETRLIMIT) | |
625 | { | |
626 | struct rlimit rlim; | |
627 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 628 | fatal_error ("getting core file size maximum limit: %m"); |
886e0865 GK |
629 | rlim.rlim_cur = rlim.rlim_max; |
630 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 631 | fatal_error ("setting core file size limit to maximum: %m"); |
886e0865 GK |
632 | } |
633 | #endif | |
634 | diagnostic_abort_on_error (global_dc); | |
635 | } | |
636 | ||
637 | ||
4291d9c8 | 638 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 639 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 640 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 641 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
642 | |
643 | void | |
e25a75e6 | 644 | strip_off_ending (char *name, int len) |
4291d9c8 | 645 | { |
2290e0ec | 646 | int i; |
41077ce4 | 647 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
648 | { |
649 | if (name[len - i] == '.') | |
650 | { | |
651 | name[len - i] = '\0'; | |
652 | break; | |
653 | } | |
654 | } | |
4291d9c8 RS |
655 | } |
656 | ||
7dce5088 | 657 | /* Output a quoted string. */ |
0f41302f | 658 | |
7dce5088 | 659 | void |
e25a75e6 | 660 | output_quoted_string (FILE *asm_file, const char *string) |
7dce5088 | 661 | { |
e9a25f70 JL |
662 | #ifdef OUTPUT_QUOTED_STRING |
663 | OUTPUT_QUOTED_STRING (asm_file, string); | |
664 | #else | |
7dce5088 PE |
665 | char c; |
666 | ||
667 | putc ('\"', asm_file); | |
668 | while ((c = *string++) != 0) | |
669 | { | |
042cdf71 ZW |
670 | if (ISPRINT (c)) |
671 | { | |
672 | if (c == '\"' || c == '\\') | |
673 | putc ('\\', asm_file); | |
674 | putc (c, asm_file); | |
675 | } | |
676 | else | |
211a0cbe | 677 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
678 | } |
679 | putc ('\"', asm_file); | |
e9a25f70 | 680 | #endif |
7dce5088 PE |
681 | } |
682 | ||
4291d9c8 RS |
683 | /* Output a file name in the form wanted by System V. */ |
684 | ||
685 | void | |
e25a75e6 | 686 | output_file_directive (FILE *asm_file, const char *input_name) |
4291d9c8 | 687 | { |
00503146 AH |
688 | int len; |
689 | const char *na; | |
fbfb16e2 | 690 | |
00503146 AH |
691 | if (input_name == NULL) |
692 | input_name = "<stdin>"; | |
693 | ||
694 | len = strlen (input_name); | |
695 | na = input_name + len; | |
4291d9c8 RS |
696 | |
697 | /* NA gets INPUT_NAME sans directory names. */ | |
698 | while (na > input_name) | |
699 | { | |
1a8bb3dd | 700 | if (IS_DIR_SEPARATOR (na[-1])) |
9cabb1d8 | 701 | break; |
4291d9c8 RS |
702 | na--; |
703 | } | |
704 | ||
4291d9c8 RS |
705 | #ifdef ASM_OUTPUT_SOURCE_FILENAME |
706 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
707 | #else | |
7dce5088 PE |
708 | fprintf (asm_file, "\t.file\t"); |
709 | output_quoted_string (asm_file, na); | |
710 | fputc ('\n', asm_file); | |
4291d9c8 | 711 | #endif |
4291d9c8 | 712 | } |
ddc9542b | 713 | |
32291f94 MM |
714 | /* Do any final processing required for the declarations in VEC, of |
715 | which there are LEN. We write out inline functions and variables | |
716 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 717 | Returns nonzero if anything was put out. */ |
854a97f0 | 718 | |
32291f94 | 719 | int |
e25a75e6 | 720 | wrapup_global_declarations (tree *vec, int len) |
32291f94 MM |
721 | { |
722 | tree decl; | |
723 | int i; | |
724 | int reconsider; | |
725 | int output_something = 0; | |
726 | ||
727 | for (i = 0; i < len; i++) | |
728 | { | |
729 | decl = vec[i]; | |
854a97f0 | 730 | |
2b59501b | 731 | /* We're not deferring this any longer. Assignment is |
3dc575ff | 732 | conditional to avoid needlessly dirtying PCH pages. */ |
2b59501b MA |
733 | if (DECL_DEFER_OUTPUT (decl) != 0) |
734 | DECL_DEFER_OUTPUT (decl) = 0; | |
854a97f0 | 735 | |
48a7a235 | 736 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) |
ae2bcd98 | 737 | lang_hooks.finish_incomplete_decl (decl); |
32291f94 MM |
738 | } |
739 | ||
740 | /* Now emit any global variables or functions that we have been | |
741 | putting off. We need to loop in case one of the things emitted | |
742 | here references another one which comes earlier in the list. */ | |
743 | do | |
744 | { | |
745 | reconsider = 0; | |
746 | for (i = 0; i < len; i++) | |
747 | { | |
748 | decl = vec[i]; | |
749 | ||
750 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
751 | continue; | |
752 | ||
753 | /* Don't write out static consts, unless we still need them. | |
754 | ||
755 | We also keep static consts if not optimizing (for debugging), | |
756 | unless the user specified -fno-keep-static-consts. | |
757 | ??? They might be better written into the debug information. | |
758 | This is possible when using DWARF. | |
759 | ||
760 | A language processor that wants static constants to be always | |
761 | written out (even if it is not used) is responsible for | |
762 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
763 | calls rest_of_decl_compilation from finish_decl. | |
764 | One motivation for this is that is conventional in some | |
765 | environments to write things like: | |
766 | static const char rcsid[] = "... version string ..."; | |
767 | intending to force the string to be in the executable. | |
768 | ||
769 | A language processor that would prefer to have unneeded | |
770 | static constants "optimized away" would just defer writing | |
771 | them out until here. E.g. C++ does this, because static | |
772 | constants are often defined in header files. | |
773 | ||
774 | ??? A tempting alternative (for both C and C++) would be | |
775 | to force a constant to be written if and only if it is | |
776 | defined in a main file, as opposed to an include file. */ | |
777 | ||
5cc90635 | 778 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) |
32291f94 | 779 | { |
f44703b5 | 780 | struct cgraph_varpool_node *node; |
5cc90635 | 781 | bool needed = 1; |
f44703b5 | 782 | node = cgraph_varpool_node (decl); |
5cc90635 | 783 | |
cd9c7bd2 | 784 | if (node->finalized) |
e69529cd | 785 | needed = 0; |
1a612e0a JJ |
786 | else if (node->alias) |
787 | needed = 0; | |
cd9c7bd2 | 788 | else if (!cgraph_global_info_ready |
e69529cd JH |
789 | && (TREE_USED (decl) |
790 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
791 | /* needed */; | |
f44703b5 | 792 | else if (node->needed) |
5cc90635 JM |
793 | /* needed */; |
794 | else if (DECL_COMDAT (decl)) | |
795 | needed = 0; | |
796 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
797 | && (optimize || !flag_keep_static_consts | |
798 | || DECL_ARTIFICIAL (decl))) | |
799 | needed = 0; | |
800 | ||
801 | if (needed) | |
802 | { | |
803 | reconsider = 1; | |
0e6df31e | 804 | rest_of_decl_compilation (decl, 1, 1); |
5cc90635 | 805 | } |
32291f94 | 806 | } |
32291f94 MM |
807 | } |
808 | ||
809 | if (reconsider) | |
810 | output_something = 1; | |
811 | } | |
812 | while (reconsider); | |
813 | ||
814 | return output_something; | |
815 | } | |
816 | ||
817 | /* Issue appropriate warnings for the global declarations in VEC (of | |
818 | which there are LEN). Output debugging information for them. */ | |
854a97f0 | 819 | |
32291f94 | 820 | void |
e25a75e6 | 821 | check_global_declarations (tree *vec, int len) |
32291f94 MM |
822 | { |
823 | tree decl; | |
824 | int i; | |
825 | ||
826 | for (i = 0; i < len; i++) | |
827 | { | |
828 | decl = vec[i]; | |
829 | ||
5ae9ba3e MM |
830 | /* Do not emit debug information about variables that are in |
831 | static storage, but not defined. */ | |
832 | if (TREE_CODE (decl) == VAR_DECL | |
833 | && TREE_STATIC (decl) | |
834 | && !TREE_ASM_WRITTEN (decl)) | |
835 | DECL_IGNORED_P (decl) = 1; | |
836 | ||
32291f94 MM |
837 | /* Warn about any function |
838 | declared static but not defined. | |
839 | We don't warn about variables, | |
840 | because many programs have static variables | |
841 | that exist only to get some text into the object file. */ | |
842 | if (TREE_CODE (decl) == FUNCTION_DECL | |
32291f94 MM |
843 | && DECL_INITIAL (decl) == 0 |
844 | && DECL_EXTERNAL (decl) | |
845 | && ! DECL_ARTIFICIAL (decl) | |
bc4b653b | 846 | && ! TREE_NO_WARNING (decl) |
3d98fa14 GK |
847 | && ! TREE_PUBLIC (decl) |
848 | && (warn_unused_function | |
849 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
32291f94 MM |
850 | { |
851 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
971801ff | 852 | pedwarn ("%J%qF used but never defined", decl, decl); |
32291f94 | 853 | else |
d4ee4d25 | 854 | warning (0, "%J%qF declared %<static%> but never defined", |
971801ff | 855 | decl, decl); |
32291f94 MM |
856 | /* This symbol is effectively an "extern" declaration now. */ |
857 | TREE_PUBLIC (decl) = 1; | |
858 | assemble_external (decl); | |
859 | } | |
860 | ||
ef4f94ac RH |
861 | /* Warn about static fns or vars defined but not used. */ |
862 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
49012f5c MM |
863 | /* We don't warn about "static const" variables because the |
864 | "rcs_id" idiom uses that construction. */ | |
865 | || (warn_unused_variable | |
866 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
867 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
ef4f94ac RH |
868 | && ! TREE_USED (decl) |
869 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
870 | to handle multiple external decls in different scopes. */ | |
871 | && ! TREE_USED (DECL_NAME (decl)) | |
32291f94 MM |
872 | && ! DECL_EXTERNAL (decl) |
873 | && ! TREE_PUBLIC (decl) | |
36b29d7d GK |
874 | /* A volatile variable might be used in some non-obvious way. */ |
875 | && ! TREE_THIS_VOLATILE (decl) | |
ef4f94ac RH |
876 | /* Global register variables must be declared to reserve them. */ |
877 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
878 | /* Otherwise, ask the language. */ | |
ae2bcd98 | 879 | && lang_hooks.decls.warn_unused_global (decl)) |
d4ee4d25 | 880 | warning (0, "%J%qD defined but not used", decl, decl); |
32291f94 | 881 | |
33c21f5c HPN |
882 | /* Avoid confusing the debug information machinery when there are |
883 | errors. */ | |
884 | if (errorcount == 0 && sorrycount == 0) | |
885 | { | |
886 | timevar_push (TV_SYMOUT); | |
887 | (*debug_hooks->global_decl) (decl); | |
888 | timevar_pop (TV_SYMOUT); | |
889 | } | |
32291f94 MM |
890 | } |
891 | } | |
032713aa | 892 | |
43f9ce02 GDR |
893 | /* Warn about a use of an identifier which was marked deprecated. */ |
894 | void | |
895 | warn_deprecated_use (tree node) | |
896 | { | |
897 | if (node == 0 || !warn_deprecated_decl) | |
898 | return; | |
899 | ||
900 | if (DECL_P (node)) | |
c1667470 PB |
901 | { |
902 | expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
d4ee4d25 | 903 | warning (0, "%qs is deprecated (declared at %s:%d)", |
c1667470 PB |
904 | IDENTIFIER_POINTER (DECL_NAME (node)), |
905 | xloc.file, xloc.line); | |
906 | } | |
43f9ce02 GDR |
907 | else if (TYPE_P (node)) |
908 | { | |
909 | const char *what = NULL; | |
910 | tree decl = TYPE_STUB_DECL (node); | |
911 | ||
108ebf88 JM |
912 | if (TYPE_NAME (node)) |
913 | { | |
914 | if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
915 | what = IDENTIFIER_POINTER (TYPE_NAME (node)); | |
916 | else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL | |
917 | && DECL_NAME (TYPE_NAME (node))) | |
918 | what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))); | |
919 | } | |
43f9ce02 | 920 | |
c1667470 | 921 | if (decl) |
43f9ce02 | 922 | { |
c1667470 PB |
923 | expanded_location xloc |
924 | = expand_location (DECL_SOURCE_LOCATION (decl)); | |
925 | if (what) | |
d4ee4d25 | 926 | warning (0, "%qs is deprecated (declared at %s:%d)", what, |
c1667470 | 927 | xloc.file, xloc.line); |
43f9ce02 | 928 | else |
d4ee4d25 | 929 | warning (0, "type is deprecated (declared at %s:%d)", |
c1667470 | 930 | xloc.file, xloc.line); |
43f9ce02 | 931 | } |
43f9ce02 | 932 | else |
c1667470 PB |
933 | { |
934 | if (what) | |
d4ee4d25 | 935 | warning (0, "%qs is deprecated", what); |
108ebf88 | 936 | else |
d4ee4d25 | 937 | warning (0, "type is deprecated"); |
c1667470 | 938 | } |
43f9ce02 GDR |
939 | } |
940 | } | |
941 | ||
070588f0 | 942 | /* Save the current INPUT_LOCATION on the top entry in the |
68723fae | 943 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the |
070588f0 | 944 | INPUT_LOCATION accordingly. */ |
68723fae MM |
945 | |
946 | void | |
c1667470 PB |
947 | #ifdef USE_MAPPED_LOCATION |
948 | push_srcloc (location_t fline) | |
949 | #else | |
e25a75e6 | 950 | push_srcloc (const char *file, int line) |
c1667470 | 951 | #endif |
68723fae MM |
952 | { |
953 | struct file_stack *fs; | |
954 | ||
703ad42b | 955 | fs = xmalloc (sizeof (struct file_stack)); |
6060edcb | 956 | fs->location = input_location; |
68723fae | 957 | fs->next = input_file_stack; |
c1667470 PB |
958 | #ifdef USE_MAPPED_LOCATION |
959 | input_location = fline; | |
960 | #else | |
640da953 PB |
961 | input_filename = file; |
962 | input_line = line; | |
c1667470 | 963 | #endif |
68723fae MM |
964 | input_file_stack = fs; |
965 | input_file_stack_tick++; | |
966 | } | |
967 | ||
968 | /* Pop the top entry off the stack of presently open source files. | |
070588f0 NS |
969 | Restore the INPUT_LOCATION from the new topmost entry on the |
970 | stack. */ | |
68723fae MM |
971 | |
972 | void | |
e25a75e6 | 973 | pop_srcloc (void) |
68723fae MM |
974 | { |
975 | struct file_stack *fs; | |
854a97f0 | 976 | |
68723fae | 977 | fs = input_file_stack; |
640da953 | 978 | input_location = fs->location; |
68723fae MM |
979 | input_file_stack = fs->next; |
980 | free (fs); | |
981 | input_file_stack_tick++; | |
68723fae MM |
982 | } |
983 | ||
f5e99456 NB |
984 | /* Compile an entire translation unit. Write a file of assembly |
985 | output and various debugging dumps. */ | |
4291d9c8 RS |
986 | |
987 | static void | |
e25a75e6 | 988 | compile_file (void) |
4291d9c8 | 989 | { |
4291d9c8 RS |
990 | /* Initialize yet another pass. */ |
991 | ||
9b3e897d | 992 | init_cgraph (); |
b93a436e | 993 | init_final (main_input_filename); |
ca29da43 | 994 | coverage_init (aux_base_name); |
4291d9c8 | 995 | |
2a9a326b | 996 | timevar_push (TV_PARSE); |
4291d9c8 | 997 | |
52dabb6c NB |
998 | /* Call the parser, which parses the entire file (calling |
999 | rest_of_compilation for each function). */ | |
ae2bcd98 | 1000 | lang_hooks.parse_file (set_yydebug); |
4291d9c8 | 1001 | |
7cb4ff28 ZW |
1002 | /* In case there were missing block closers, |
1003 | get us back to the global binding level. */ | |
ae2bcd98 | 1004 | lang_hooks.clear_binding_stack (); |
4291d9c8 RS |
1005 | |
1006 | /* Compilation is now finished except for writing | |
1007 | what's left of the symbol table output. */ | |
2a9a326b | 1008 | timevar_pop (TV_PARSE); |
4291d9c8 | 1009 | |
1fe65c00 | 1010 | if (flag_syntax_only) |
22703ccc | 1011 | return; |
1fe65c00 | 1012 | |
ae2bcd98 | 1013 | lang_hooks.decls.final_write_globals (); |
e69529cd | 1014 | cgraph_varpool_assemble_pending_decls (); |
e4d5432a | 1015 | finish_aliases_2 (); |
e69529cd | 1016 | |
ca29da43 NS |
1017 | /* This must occur after the loop to output deferred functions. |
1018 | Else the coverage initializer would not be emitted if all the | |
1019 | functions in this compilation unit were deferred. */ | |
1020 | coverage_finish (); | |
2668793e | 1021 | |
ccab73c3 FCE |
1022 | /* Likewise for mudflap static object registrations. */ |
1023 | if (flag_mudflap) | |
1024 | mudflap_finish_file (); | |
1025 | ||
4b8af8d9 JM |
1026 | /* Write out any pending weak symbol declarations. */ |
1027 | ||
1028 | weak_finish (); | |
1029 | ||
854a97f0 | 1030 | /* Do dbx symbols. */ |
2a9a326b | 1031 | timevar_push (TV_SYMOUT); |
7f905405 | 1032 | |
0021b564 JM |
1033 | #ifdef DWARF2_UNWIND_INFO |
1034 | if (dwarf2out_do_frame ()) | |
1035 | dwarf2out_frame_finish (); | |
1036 | #endif | |
1037 | ||
e2a12aca | 1038 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 1039 | timevar_pop (TV_SYMOUT); |
9a666dda | 1040 | |
4291d9c8 RS |
1041 | /* Output some stuff at end of file if nec. */ |
1042 | ||
2a1ee410 RH |
1043 | dw2_output_indirect_constants (); |
1044 | ||
bc6d19ab ZW |
1045 | /* Flush any pending external directives. cgraph did this for |
1046 | assemble_external calls from the front end, but the RTL | |
1047 | expander can also generate them. */ | |
1048 | process_pending_assemble_externals (); | |
1049 | ||
acb0db7b ZW |
1050 | /* Attach a special .ident directive to the end of the file to identify |
1051 | the version of GCC which compiled this code. The format of the .ident | |
1052 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1053 | #ifdef IDENT_ASM_OP | |
1054 | if (!flag_no_ident) | |
1055 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
1056 | IDENT_ASM_OP, version_string); | |
1057 | #endif | |
57bef48e AP |
1058 | |
1059 | /* This must be at the end. Some target ports emit end of file directives | |
1060 | into the assembly file here, and hence we can not output anything to the | |
1061 | assembly file after this point. */ | |
1062 | targetm.asm_out.file_end (); | |
4291d9c8 | 1063 | } |
ddc9542b | 1064 | |
f6db1481 | 1065 | /* Display help for target options. */ |
4291d9c8 | 1066 | void |
f6db1481 | 1067 | display_target_options (void) |
4291d9c8 | 1068 | { |
d522e7a2 RS |
1069 | int undoc; |
1070 | #if defined (TARGET_SWITCHES) || defined (TARGET_OPTIONS) | |
1071 | int i; | |
1072 | #endif | |
75685792 | 1073 | unsigned int cli; |
f6db1481 RH |
1074 | static bool displayed = false; |
1075 | ||
1076 | /* Avoid double printing for --help --target-help. */ | |
1077 | if (displayed) | |
1078 | return; | |
1079 | ||
1080 | displayed = true; | |
b14707c3 | 1081 | |
75685792 RS |
1082 | for (cli = 0; cli < cl_options_count; cli++) |
1083 | if ((cl_options[cli].flags & (CL_TARGET | CL_UNDOCUMENTED)) == CL_TARGET) | |
1084 | break; | |
1085 | ||
1086 | if (cli < cl_options_count | |
1087 | #ifdef TARGET_SWITCHES | |
1088 | || ARRAY_SIZE (target_switches) > 1 | |
1089 | #endif | |
f6db1481 RH |
1090 | #ifdef TARGET_OPTIONS |
1091 | || ARRAY_SIZE (target_options) > 1 | |
1092 | #endif | |
1093 | ) | |
2a9a326b | 1094 | { |
75685792 | 1095 | int doc = cli < cl_options_count; |
b14707c3 | 1096 | |
f6db1481 | 1097 | undoc = 0; |
b14707c3 | 1098 | |
f6db1481 | 1099 | printf (_("\nTarget specific options:\n")); |
a40c2961 | 1100 | |
75685792 | 1101 | #ifdef TARGET_SWITCHES |
f6db1481 | 1102 | for (i = ARRAY_SIZE (target_switches); i--;) |
e69529cd | 1103 | { |
f6db1481 RH |
1104 | const char *option = target_switches[i].name; |
1105 | const char *description = target_switches[i].description; | |
35d8c8e2 | 1106 | |
f6db1481 RH |
1107 | if (option == NULL || *option == 0) |
1108 | continue; | |
1109 | else if (description == NULL) | |
1110 | { | |
1111 | undoc = 1; | |
1112 | ||
1113 | if (extra_warnings) | |
1114 | printf (_(" -m%-23s [undocumented]\n"), option); | |
1115 | } | |
1116 | else if (*description != 0) | |
1117 | doc += printf (" -m%-23s %s\n", option, _(description)); | |
2a9a326b | 1118 | } |
75685792 | 1119 | #endif |
b14707c3 | 1120 | |
f6db1481 RH |
1121 | #ifdef TARGET_OPTIONS |
1122 | for (i = ARRAY_SIZE (target_options); i--;) | |
4291d9c8 | 1123 | { |
f6db1481 RH |
1124 | const char *option = target_options[i].prefix; |
1125 | const char *description = target_options[i].description; | |
1126 | ||
1127 | if (option == NULL || *option == 0) | |
1128 | continue; | |
1129 | else if (description == NULL) | |
1130 | { | |
1131 | undoc = 1; | |
1132 | ||
1133 | if (extra_warnings) | |
1134 | printf (_(" -m%-23s [undocumented]\n"), option); | |
1135 | } | |
1136 | else if (*description != 0) | |
1137 | doc += printf (" -m%-23s %s\n", option, _(description)); | |
4291d9c8 | 1138 | } |
f6db1481 | 1139 | #endif |
75685792 | 1140 | print_filtered_help (CL_TARGET); |
f6db1481 | 1141 | if (undoc) |
8f17b5c5 | 1142 | { |
f6db1481 RH |
1143 | if (doc) |
1144 | printf (_("\nThere are undocumented target specific options as well.\n")); | |
1145 | else | |
1146 | printf (_(" They exist, but they are not documented.\n")); | |
8f17b5c5 | 1147 | } |
4291d9c8 | 1148 | } |
4291d9c8 RS |
1149 | } |
1150 | ||
f6db1481 | 1151 | /* Parse a -d... command line switch. */ |
4291d9c8 RS |
1152 | |
1153 | void | |
f6db1481 | 1154 | decode_d_option (const char *arg) |
4291d9c8 | 1155 | { |
f6db1481 | 1156 | int c; |
33c21f5c | 1157 | |
f6db1481 RH |
1158 | while (*arg) |
1159 | switch (c = *arg++) | |
1160 | { | |
1161 | case 'A': | |
1162 | flag_debug_asm = 1; | |
1163 | break; | |
1164 | case 'p': | |
1165 | flag_print_asm_name = 1; | |
1166 | break; | |
1167 | case 'P': | |
1168 | flag_dump_rtl_in_asm = 1; | |
1169 | flag_print_asm_name = 1; | |
1170 | break; | |
1171 | case 'v': | |
1172 | graph_dump_format = vcg; | |
1173 | break; | |
1174 | case 'x': | |
1175 | rtl_dump_and_exit = 1; | |
1176 | break; | |
1177 | case 'y': | |
1178 | set_yydebug = 1; | |
1179 | break; | |
1180 | case 'D': /* These are handled by the preprocessor. */ | |
1181 | case 'I': | |
1182 | break; | |
1183 | case 'H': | |
1184 | setup_core_dumping(); | |
1185 | break; | |
1186 | ||
1187 | case 'a': | |
1188 | default: | |
1189 | if (!enable_rtl_dump_file (c)) | |
d4ee4d25 | 1190 | warning (0, "unrecognized gcc debugging option: %c", c); |
f6db1481 RH |
1191 | break; |
1192 | } | |
4291d9c8 RS |
1193 | } |
1194 | ||
f6db1481 RH |
1195 | /* Indexed by enum debug_info_type. */ |
1196 | const char *const debug_type_names[] = | |
4291d9c8 | 1197 | { |
8f49f0f1 | 1198 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" |
f6db1481 | 1199 | }; |
1b3d8f8a | 1200 | |
f6db1481 RH |
1201 | /* Decode -m switches. */ |
1202 | /* Decode the switch -mNAME. */ | |
d511f9d5 | 1203 | |
f6db1481 RH |
1204 | void |
1205 | set_target_switch (const char *name) | |
1206 | { | |
75685792 | 1207 | #if defined (TARGET_SWITCHES) || defined (TARGET_OPTIONS) |
f6db1481 | 1208 | size_t j; |
75685792 | 1209 | #endif |
f6db1481 | 1210 | int valid_target_option = 0; |
fcd7f76b | 1211 | |
75685792 | 1212 | #ifdef TARGET_SWITCHES |
f6db1481 RH |
1213 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
1214 | if (!strcmp (target_switches[j].name, name)) | |
1215 | { | |
1216 | if (target_switches[j].value < 0) | |
1217 | target_flags &= ~-target_switches[j].value; | |
1218 | else | |
1219 | target_flags |= target_switches[j].value; | |
1220 | if (name[0] != 0) | |
1221 | { | |
1222 | if (target_switches[j].value < 0) | |
1223 | target_flags_explicit |= -target_switches[j].value; | |
1224 | else | |
1225 | target_flags_explicit |= target_switches[j].value; | |
1226 | } | |
1227 | valid_target_option = 1; | |
1228 | } | |
75685792 | 1229 | #endif |
e619323d | 1230 | |
f6db1481 RH |
1231 | #ifdef TARGET_OPTIONS |
1232 | if (!valid_target_option) | |
1233 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
1234 | { | |
1235 | int len = strlen (target_options[j].prefix); | |
1236 | if (target_options[j].value) | |
1237 | { | |
1238 | if (!strcmp (target_options[j].prefix, name)) | |
1239 | { | |
1240 | *target_options[j].variable = target_options[j].value; | |
1241 | valid_target_option = 1; | |
1242 | } | |
1243 | } | |
1244 | else | |
1245 | { | |
1246 | if (!strncmp (target_options[j].prefix, name, len)) | |
1247 | { | |
1248 | *target_options[j].variable = name + len; | |
1249 | valid_target_option = 1; | |
1250 | } | |
1251 | } | |
1252 | } | |
ddc9542b | 1253 | #endif |
1f8f4a0b | 1254 | |
75685792 | 1255 | if (name[0] != 0 && !valid_target_option) |
971801ff | 1256 | error ("invalid option %qs", name); |
ddc9542b | 1257 | } |
4291d9c8 | 1258 | |
f6db1481 RH |
1259 | /* Print version information to FILE. |
1260 | Each line begins with INDENT (for the case where FILE is the | |
1261 | assembler output file). */ | |
3c030e88 | 1262 | |
f6db1481 RH |
1263 | void |
1264 | print_version (FILE *file, const char *indent) | |
f5e99456 NB |
1265 | { |
1266 | #ifndef __VERSION__ | |
1267 | #define __VERSION__ "[?]" | |
1268 | #endif | |
1269 | fnotice (file, | |
1270 | #ifdef __GNUC__ | |
1271 | "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n" | |
1272 | #else | |
1273 | "%s%s%s version %s (%s) compiled by CC.\n" | |
1274 | #endif | |
1275 | , indent, *indent != 0 ? " " : "", | |
1276 | lang_hooks.name, version_string, TARGET_NAME, | |
1277 | indent, __VERSION__); | |
7a69a172 GB |
1278 | fnotice (file, "%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n", |
1279 | indent, *indent != 0 ? " " : "", | |
1280 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
f5e99456 NB |
1281 | } |
1282 | ||
1283 | /* Print an option value and return the adjusted position in the line. | |
1284 | ??? We don't handle error returns from fprintf (disk full); presumably | |
1285 | other code will catch a disk full though. */ | |
1286 | ||
1287 | static int | |
e25a75e6 AJ |
1288 | print_single_switch (FILE *file, int pos, int max, |
1289 | const char *indent, const char *sep, const char *term, | |
1290 | const char *type, const char *name) | |
f5e99456 NB |
1291 | { |
1292 | /* The ultrix fprintf returns 0 on success, so compute the result we want | |
1293 | here since we need it for the following test. */ | |
1294 | int len = strlen (sep) + strlen (type) + strlen (name); | |
1295 | ||
1296 | if (pos != 0 | |
1297 | && pos + len > max) | |
1298 | { | |
1299 | fprintf (file, "%s", term); | |
1300 | pos = 0; | |
1301 | } | |
1302 | if (pos == 0) | |
1303 | { | |
1304 | fprintf (file, "%s", indent); | |
1305 | pos = strlen (indent); | |
1306 | } | |
1307 | fprintf (file, "%s%s%s", sep, type, name); | |
1308 | pos += len; | |
1309 | return pos; | |
1310 | } | |
1311 | ||
1312 | /* Print active target switches to FILE. | |
1313 | POS is the current cursor position and MAX is the size of a "line". | |
1314 | Each line begins with INDENT and ends with TERM. | |
1315 | Each switch is separated from the next by SEP. */ | |
1316 | ||
1317 | static void | |
e25a75e6 AJ |
1318 | print_switch_values (FILE *file, int pos, int max, |
1319 | const char *indent, const char *sep, const char *term) | |
f5e99456 NB |
1320 | { |
1321 | size_t j; | |
b86f6cd9 | 1322 | const char **p; |
f5e99456 | 1323 | |
a37db56b | 1324 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
c07e5477 NS |
1325 | that it can be printed below. This helps reproducibility. */ |
1326 | randomize (); | |
a37db56b | 1327 | |
f5e99456 | 1328 | /* Print the options as passed. */ |
f5e99456 NB |
1329 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
1330 | _("options passed: "), ""); | |
1331 | ||
1332 | for (p = &save_argv[1]; *p != NULL; p++) | |
1333 | if (**p == '-') | |
1334 | { | |
1335 | /* Ignore these. */ | |
1336 | if (strcmp (*p, "-o") == 0) | |
1337 | { | |
1338 | if (p[1] != NULL) | |
1339 | p++; | |
1340 | continue; | |
1341 | } | |
1342 | if (strcmp (*p, "-quiet") == 0) | |
1343 | continue; | |
1344 | if (strcmp (*p, "-version") == 0) | |
1345 | continue; | |
1346 | if ((*p)[1] == 'd') | |
1347 | continue; | |
1348 | ||
1349 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
1350 | } | |
1351 | if (pos > 0) | |
1352 | fprintf (file, "%s", term); | |
1353 | ||
1354 | /* Print the -f and -m options that have been enabled. | |
1355 | We don't handle language specific options but printing argv | |
1356 | should suffice. */ | |
1357 | ||
1358 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
1359 | _("options enabled: "), ""); | |
1360 | ||
50431bc4 | 1361 | for (j = 0; j < cl_options_count; j++) |
75685792 | 1362 | if ((cl_options[j].flags & CL_REPORT) |
ccf08a6e | 1363 | && option_enabled (j) > 0) |
f5e99456 | 1364 | pos = print_single_switch (file, pos, max, indent, sep, term, |
50431bc4 | 1365 | "", cl_options[j].opt_text); |
f5e99456 NB |
1366 | |
1367 | /* Print target specific options. */ | |
1368 | ||
75685792 | 1369 | #ifdef TARGET_SWITCHES |
f5e99456 NB |
1370 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
1371 | if (target_switches[j].name[0] != '\0' | |
1372 | && target_switches[j].value > 0 | |
1373 | && ((target_switches[j].value & target_flags) | |
1374 | == target_switches[j].value)) | |
1375 | { | |
1376 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
1377 | "-m", target_switches[j].name); | |
1378 | } | |
75685792 | 1379 | #endif |
f5e99456 NB |
1380 | |
1381 | #ifdef TARGET_OPTIONS | |
1382 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
1383 | if (*target_options[j].variable != NULL) | |
1384 | { | |
1385 | char prefix[256]; | |
1386 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
1387 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
1388 | prefix, *target_options[j].variable); | |
1389 | } | |
1390 | #endif | |
1391 | ||
1392 | fprintf (file, "%s", term); | |
1393 | } | |
ddc9542b | 1394 | |
f5e99456 NB |
1395 | /* Open assembly code output file. Do this even if -fsyntax-only is |
1396 | on, because then the driver will have provided the name of a | |
1397 | temporary file or bit bucket for us. NAME is the file specified on | |
1398 | the command line, possibly NULL. */ | |
1399 | static void | |
e25a75e6 | 1400 | init_asm_output (const char *name) |
f5e99456 NB |
1401 | { |
1402 | if (name == NULL && asm_file_name == 0) | |
1403 | asm_out_file = stdout; | |
1404 | else | |
1405 | { | |
1406 | if (asm_file_name == 0) | |
9cabb1d8 KH |
1407 | { |
1408 | int len = strlen (dump_base_name); | |
703ad42b | 1409 | char *dumpname = xmalloc (len + 6); |
9cabb1d8 KH |
1410 | memcpy (dumpname, dump_base_name, len + 1); |
1411 | strip_off_ending (dumpname, len); | |
1412 | strcat (dumpname, ".s"); | |
1413 | asm_file_name = dumpname; | |
1414 | } | |
f5e99456 | 1415 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 1416 | asm_out_file = stdout; |
f5e99456 | 1417 | else |
90aa6719 | 1418 | asm_out_file = fopen (asm_file_name, "w+b"); |
f5e99456 | 1419 | if (asm_out_file == 0) |
971801ff | 1420 | fatal_error ("can%'t open %s for writing: %m", asm_file_name); |
f5e99456 NB |
1421 | } |
1422 | ||
f5e99456 NB |
1423 | if (!flag_syntax_only) |
1424 | { | |
1bc7c5b6 | 1425 | targetm.asm_out.file_start (); |
f5e99456 NB |
1426 | |
1427 | #ifdef ASM_COMMENT_START | |
1428 | if (flag_verbose_asm) | |
1429 | { | |
1430 | /* Print the list of options in effect. */ | |
1431 | print_version (asm_out_file, ASM_COMMENT_START); | |
1432 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
1433 | ASM_COMMENT_START, " ", "\n"); | |
1434 | /* Add a blank line here so it appears in assembler output but not | |
1435 | screen output. */ | |
1436 | fprintf (asm_out_file, "\n"); | |
1437 | } | |
1438 | #endif | |
1439 | } | |
1440 | } | |
ddc9542b | 1441 | |
7bb1ad93 GK |
1442 | /* Default version of get_pch_validity. |
1443 | By default, every flag difference is fatal; that will be mostly right for | |
1444 | most targets, but completely right for very few. */ | |
1445 | ||
1446 | void * | |
1447 | default_get_pch_validity (size_t *len) | |
1448 | { | |
2b256a46 | 1449 | #ifdef TARGET_OPTIONS |
7bb1ad93 | 1450 | size_t i; |
2b256a46 | 1451 | #endif |
7bb1ad93 | 1452 | char *result, *r; |
fbfb16e2 | 1453 | |
7bb1ad93 | 1454 | *len = sizeof (target_flags) + 2; |
b36c208a | 1455 | #ifdef TARGET_OPTIONS |
7bb1ad93 GK |
1456 | for (i = 0; i < ARRAY_SIZE (target_options); i++) |
1457 | { | |
1458 | *len += 1; | |
1459 | if (*target_options[i].variable) | |
1460 | *len += strlen (*target_options[i].variable); | |
1461 | } | |
b36c208a | 1462 | #endif |
7bb1ad93 GK |
1463 | |
1464 | result = r = xmalloc (*len); | |
1465 | r[0] = flag_pic; | |
1466 | r[1] = flag_pie; | |
1467 | r += 2; | |
1468 | memcpy (r, &target_flags, sizeof (target_flags)); | |
1469 | r += sizeof (target_flags); | |
fbfb16e2 | 1470 | |
b36c208a | 1471 | #ifdef TARGET_OPTIONS |
7bb1ad93 GK |
1472 | for (i = 0; i < ARRAY_SIZE (target_options); i++) |
1473 | { | |
1474 | const char *str = *target_options[i].variable; | |
1475 | size_t l; | |
1476 | if (! str) | |
1477 | str = ""; | |
1478 | l = strlen (str) + 1; | |
1479 | memcpy (r, str, l); | |
1480 | r += l; | |
1481 | } | |
b36c208a | 1482 | #endif |
7bb1ad93 GK |
1483 | |
1484 | return result; | |
1485 | } | |
1486 | ||
1487 | /* Default version of pch_valid_p. */ | |
1488 | ||
1489 | const char * | |
1490 | default_pch_valid_p (const void *data_p, size_t len) | |
1491 | { | |
1492 | const char *data = (const char *)data_p; | |
1493 | const char *flag_that_differs = NULL; | |
1494 | size_t i; | |
fbfb16e2 | 1495 | |
7bb1ad93 GK |
1496 | /* -fpic and -fpie also usually make a PCH invalid. */ |
1497 | if (data[0] != flag_pic) | |
1498 | return _("created and used with different settings of -fpic"); | |
1499 | if (data[1] != flag_pie) | |
1500 | return _("created and used with different settings of -fpie"); | |
1501 | data += 2; | |
1502 | ||
1503 | /* Check target_flags. */ | |
1504 | if (memcmp (data, &target_flags, sizeof (target_flags)) != 0) | |
1505 | { | |
75685792 RS |
1506 | int tf; |
1507 | ||
1508 | memcpy (&tf, data, sizeof (target_flags)); | |
1509 | #ifdef TARGET_SWITCHES | |
7bb1ad93 GK |
1510 | for (i = 0; i < ARRAY_SIZE (target_switches); i++) |
1511 | { | |
1512 | int bits; | |
7bb1ad93 GK |
1513 | |
1514 | bits = target_switches[i].value; | |
1515 | if (bits < 0) | |
1516 | bits = -bits; | |
1517 | if ((target_flags & bits) != (tf & bits)) | |
1518 | { | |
1519 | flag_that_differs = target_switches[i].name; | |
1520 | goto make_message; | |
1521 | } | |
1522 | } | |
75685792 RS |
1523 | #endif |
1524 | for (i = 0; i < cl_options_count; i++) | |
1525 | if (cl_options[i].flag_var == &target_flags | |
1526 | && (cl_options[i].var_value & (target_flags ^ tf)) != 0) | |
1527 | { | |
1528 | flag_that_differs = cl_options[i].opt_text + 2; | |
1529 | goto make_message; | |
1530 | } | |
1e128c5f | 1531 | gcc_unreachable (); |
7bb1ad93 GK |
1532 | } |
1533 | data += sizeof (target_flags); | |
1534 | len -= sizeof (target_flags); | |
fbfb16e2 | 1535 | |
7bb1ad93 | 1536 | /* Check string options. */ |
b36c208a | 1537 | #ifdef TARGET_OPTIONS |
7bb1ad93 GK |
1538 | for (i = 0; i < ARRAY_SIZE (target_options); i++) |
1539 | { | |
1540 | const char *str = *target_options[i].variable; | |
1541 | size_t l; | |
1542 | if (! str) | |
1543 | str = ""; | |
1544 | l = strlen (str) + 1; | |
1545 | if (len < l || memcmp (data, str, l) != 0) | |
1546 | { | |
1547 | flag_that_differs = target_options[i].prefix; | |
1548 | goto make_message; | |
1549 | } | |
1550 | data += l; | |
1551 | len -= l; | |
1552 | } | |
b36c208a | 1553 | #endif |
7bb1ad93 GK |
1554 | |
1555 | return NULL; | |
fbfb16e2 | 1556 | |
7bb1ad93 GK |
1557 | make_message: |
1558 | { | |
1559 | char *r; | |
971801ff | 1560 | asprintf (&r, _("created and used with differing settings of '-m%s'"), |
7bb1ad93 GK |
1561 | flag_that_differs); |
1562 | if (r == NULL) | |
d7d4cd78 | 1563 | return _("out of memory"); |
7bb1ad93 GK |
1564 | return r; |
1565 | } | |
1566 | } | |
1567 | ||
b6fe0bb8 GDR |
1568 | /* Default tree printer. Handles declarations only. */ |
1569 | static bool | |
1570 | default_tree_printer (pretty_printer * pp, text_info *text) | |
1571 | { | |
dad2a933 RH |
1572 | tree t; |
1573 | ||
b6fe0bb8 GDR |
1574 | switch (*text->format_spec) |
1575 | { | |
1576 | case 'D': | |
dad2a933 RH |
1577 | t = va_arg (*text->args_ptr, tree); |
1578 | if (DECL_DEBUG_EXPR (t) && DECL_DEBUG_EXPR_IS_FROM (t)) | |
1579 | t = DECL_DEBUG_EXPR (t); | |
1580 | break; | |
1581 | ||
b6fe0bb8 GDR |
1582 | case 'F': |
1583 | case 'T': | |
dad2a933 RH |
1584 | t = va_arg (*text->args_ptr, tree); |
1585 | break; | |
b6fe0bb8 GDR |
1586 | |
1587 | default: | |
1588 | return false; | |
1589 | } | |
dad2a933 RH |
1590 | |
1591 | if (DECL_P (t)) | |
1592 | { | |
1593 | const char *n = DECL_NAME (t) | |
1594 | ? lang_hooks.decl_printable_name (t, 2) | |
1595 | : "<anonymous>"; | |
1596 | pp_string (pp, n); | |
1597 | } | |
1598 | else | |
1599 | dump_generic_node (pp, t, 0, 0, 0); | |
1600 | ||
1601 | return true; | |
b6fe0bb8 GDR |
1602 | } |
1603 | ||
f5e99456 NB |
1604 | /* Initialization of the front end environment, before command line |
1605 | options are parsed. Signal handlers, internationalization etc. | |
1606 | ARGV0 is main's argv[0]. */ | |
1607 | static void | |
b86f6cd9 | 1608 | general_init (const char *argv0) |
f5e99456 | 1609 | { |
b86f6cd9 | 1610 | const char *p; |
f5e99456 NB |
1611 | |
1612 | p = argv0 + strlen (argv0); | |
1613 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
1614 | --p; | |
1615 | progname = p; | |
1616 | ||
1617 | xmalloc_set_program_name (progname); | |
e1a132c6 | 1618 | |
5351f1ca NB |
1619 | hex_init (); |
1620 | ||
98a3dad4 | 1621 | /* Unlock the stdio streams. */ |
2653bb0c | 1622 | unlock_std_streams (); |
98a3dad4 | 1623 | |
191bf464 | 1624 | gcc_init_libintl (); |
ab87f8c8 | 1625 | |
b6fe0bb8 GDR |
1626 | /* Initialize the diagnostics reporting machinery, so option parsing |
1627 | can give warnings and errors. */ | |
1628 | diagnostic_initialize (global_dc); | |
1629 | /* Set a default printer. Language specific initializations will | |
1630 | override it later. */ | |
1631 | pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
1632 | ||
a7023245 ZW |
1633 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
1634 | #ifdef SIGSEGV | |
1635 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 1636 | #endif |
a7023245 ZW |
1637 | #ifdef SIGILL |
1638 | signal (SIGILL, crash_signal); | |
1639 | #endif | |
1640 | #ifdef SIGBUS | |
1641 | signal (SIGBUS, crash_signal); | |
1642 | #endif | |
1643 | #ifdef SIGABRT | |
1644 | signal (SIGABRT, crash_signal); | |
1645 | #endif | |
1646 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
1647 | signal (SIGIOT, crash_signal); | |
1648 | #endif | |
15e5ad76 ZW |
1649 | #ifdef SIGFPE |
1650 | signal (SIGFPE, crash_signal); | |
1651 | #endif | |
854a97f0 | 1652 | |
476d9098 GK |
1653 | /* Other host-specific signal setup. */ |
1654 | (*host_hooks.extra_signals)(); | |
1655 | ||
c79043f3 NB |
1656 | /* Initialize the garbage-collector, string pools and tree type hash |
1657 | table. */ | |
1658 | init_ggc (); | |
1659 | init_stringpool (); | |
50f59cd7 | 1660 | linemap_init (&line_table); |
c79043f3 | 1661 | init_ttree (); |
6a08f7b3 | 1662 | |
f5e99456 NB |
1663 | /* Initialize register usage now so switches may override. */ |
1664 | init_reg_sets (); | |
764dbbf2 | 1665 | |
c6d9a88c MM |
1666 | /* Register the language-independent parameters. */ |
1667 | add_params (lang_independent_params, LAST_PARAM); | |
1668 | ||
9ac121af KG |
1669 | /* This must be done after add_params but before argument processing. */ |
1670 | init_ggc_heuristics(); | |
6de9cd9a | 1671 | init_tree_optimization_passes (); |
a32274ad | 1672 | } |
ddc9542b | 1673 | |
a32274ad NB |
1674 | /* Process the options that have been parsed. */ |
1675 | static void | |
e25a75e6 | 1676 | process_options (void) |
a32274ad | 1677 | { |
4bfec483 NB |
1678 | /* Allow the front end to perform consistency checks and do further |
1679 | initialization based on the command line options. This hook also | |
1680 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
1681 | so we can correctly initialize debug output. */ | |
ae2bcd98 | 1682 | no_backend = lang_hooks.post_options (&main_input_filename); |
c1667470 | 1683 | #ifndef USE_MAPPED_LOCATION |
d7b42618 | 1684 | input_filename = main_input_filename; |
c1667470 | 1685 | #endif |
4bfec483 | 1686 | |
4291d9c8 RS |
1687 | #ifdef OVERRIDE_OPTIONS |
1688 | /* Some machines may reject certain combinations of options. */ | |
1689 | OVERRIDE_OPTIONS; | |
1690 | #endif | |
1691 | ||
32770746 PB |
1692 | if (flag_short_enums == 2) |
1693 | flag_short_enums = targetm.default_short_enums (); | |
1694 | ||
b1cbe78c NB |
1695 | /* Set aux_base_name if not already set. */ |
1696 | if (aux_base_name) | |
1697 | ; | |
d7b42618 | 1698 | else if (main_input_filename) |
b1cbe78c | 1699 | { |
d7b42618 | 1700 | char *name = xstrdup (lbasename (main_input_filename)); |
e25a75e6 | 1701 | |
b1cbe78c NB |
1702 | strip_off_ending (name, strlen (name)); |
1703 | aux_base_name = name; | |
1704 | } | |
1705 | else | |
1706 | aux_base_name = "gccaux"; | |
1707 | ||
efa3896a GK |
1708 | /* Set up the align_*_log variables, defaulting them to 1 if they |
1709 | were still unset. */ | |
1710 | if (align_loops <= 0) align_loops = 1; | |
2cca7283 JH |
1711 | if (align_loops_max_skip > align_loops || !align_loops) |
1712 | align_loops_max_skip = align_loops - 1; | |
854a97f0 | 1713 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
efa3896a | 1714 | if (align_jumps <= 0) align_jumps = 1; |
2cca7283 JH |
1715 | if (align_jumps_max_skip > align_jumps || !align_jumps) |
1716 | align_jumps_max_skip = align_jumps - 1; | |
854a97f0 | 1717 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
efa3896a | 1718 | if (align_labels <= 0) align_labels = 1; |
854a97f0 | 1719 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
2cca7283 JH |
1720 | if (align_labels_max_skip > align_labels || !align_labels) |
1721 | align_labels_max_skip = align_labels - 1; | |
efa3896a | 1722 | if (align_functions <= 0) align_functions = 1; |
854a97f0 KH |
1723 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
1724 | ||
4291d9c8 RS |
1725 | /* Unrolling all loops implies that standard loop unrolling must also |
1726 | be done. */ | |
1727 | if (flag_unroll_all_loops) | |
1728 | flag_unroll_loops = 1; | |
b17d5d7c | 1729 | |
c94583fe | 1730 | /* The loop unrolling code assumes that cse will be run after loop. */ |
b17d5d7c ZD |
1731 | if (flag_unroll_loops || flag_peel_loops) |
1732 | flag_rerun_cse_after_loop = 1; | |
4291d9c8 | 1733 | |
5e962776 ZD |
1734 | /* If explicitly asked to run new loop optimizer, switch off the old |
1735 | one. */ | |
1736 | if (flag_loop_optimize2) | |
1737 | flag_loop_optimize = 0; | |
1738 | ||
1739 | /* Enable new loop optimizer pass if any of its optimizations is called. */ | |
1740 | if (flag_move_loop_invariants | |
1741 | || flag_unswitch_loops | |
1742 | || flag_peel_loops | |
1743 | || flag_unroll_loops | |
1744 | || flag_branch_on_count_reg) | |
1745 | flag_loop_optimize2 = 1; | |
1746 | ||
b932f770 JH |
1747 | if (flag_non_call_exceptions) |
1748 | flag_asynchronous_unwind_tables = 1; | |
1749 | if (flag_asynchronous_unwind_tables) | |
1750 | flag_unwind_tables = 1; | |
1751 | ||
e72fcfe8 JH |
1752 | /* Disable unit-at-a-time mode for frontends not supporting callgraph |
1753 | interface. */ | |
1754 | if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function) | |
1755 | flag_unit_at_a_time = 0; | |
1756 | ||
fca9dc00 ZD |
1757 | if (flag_value_profile_transformations) |
1758 | flag_profile_values = 1; | |
1759 | ||
6d9901e7 ZD |
1760 | /* Speculative prefetching implies the value profiling. We also switch off |
1761 | the prefetching in the loop optimizer, so that we do not emit double | |
1762 | prefetches. TODO -- we should teach these two to cooperate; the loop | |
1763 | based prefetching may sometimes do a better job, especially in connection | |
1764 | with reuse analysis. */ | |
1765 | if (flag_speculative_prefetching) | |
1766 | { | |
1767 | flag_profile_values = 1; | |
1768 | flag_prefetch_loop_arrays = 0; | |
1769 | } | |
1770 | ||
4291d9c8 RS |
1771 | /* Warn about options that are not supported on this machine. */ |
1772 | #ifndef INSN_SCHEDULING | |
1773 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
d4ee4d25 | 1774 | warning (0, "instruction scheduling not supported on this target machine"); |
4291d9c8 RS |
1775 | #endif |
1776 | #ifndef DELAY_SLOTS | |
1777 | if (flag_delayed_branch) | |
d4ee4d25 | 1778 | warning (0, "this target machine does not have delayed branches"); |
4291d9c8 RS |
1779 | #endif |
1780 | ||
19283265 RH |
1781 | user_label_prefix = USER_LABEL_PREFIX; |
1782 | if (flag_leading_underscore != -1) | |
1783 | { | |
854a97f0 | 1784 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
1785 | issue a warning and ignore this option. */ |
1786 | if (user_label_prefix[0] == 0 || | |
1787 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
1788 | { | |
1789 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
1790 | } | |
1791 | else | |
d4ee4d25 | 1792 | warning (0, "-f%sleading-underscore not supported on this target machine", |
19283265 RH |
1793 | flag_leading_underscore ? "" : "no-"); |
1794 | } | |
1795 | ||
4291d9c8 RS |
1796 | /* If we are in verbose mode, write out the version and maybe all the |
1797 | option flags in use. */ | |
1798 | if (version_flag) | |
1799 | { | |
3d5cdd42 | 1800 | print_version (stderr, ""); |
4291d9c8 | 1801 | if (! quiet_flag) |
3d5cdd42 | 1802 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
1803 | } |
1804 | ||
f5e99456 NB |
1805 | if (flag_syntax_only) |
1806 | { | |
1807 | write_symbols = NO_DEBUG; | |
1808 | profile_flag = 0; | |
f5e99456 | 1809 | } |
4291d9c8 | 1810 | |
df38ffef NB |
1811 | /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
1812 | level is 0. */ | |
1813 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1814 | write_symbols = NO_DEBUG; | |
1815 | ||
f5e99456 NB |
1816 | /* Now we know write_symbols, set up the debug hooks based on it. |
1817 | By default we do nothing for debug output. */ | |
38d396e5 PB |
1818 | if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) |
1819 | default_debug_hooks = &do_nothing_debug_hooks; | |
1820 | #if defined(DBX_DEBUGGING_INFO) | |
1821 | else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
1822 | default_debug_hooks = &dbx_debug_hooks; | |
1823 | #endif | |
1824 | #if defined(XCOFF_DEBUGGING_INFO) | |
1825 | else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
1826 | default_debug_hooks = &xcoff_debug_hooks; | |
1827 | #endif | |
1828 | #ifdef SDB_DEBUGGING_INFO | |
1829 | else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
1830 | default_debug_hooks = &sdb_debug_hooks; | |
1831 | #endif | |
1832 | #ifdef DWARF2_DEBUGGING_INFO | |
1833 | else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
1834 | default_debug_hooks = &dwarf2_debug_hooks; | |
1835 | #endif | |
1836 | #ifdef VMS_DEBUGGING_INFO | |
1837 | else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
1838 | || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
1839 | default_debug_hooks = &vmsdbg_debug_hooks; | |
1840 | #endif | |
1841 | ||
93415288 | 1842 | debug_hooks = &do_nothing_debug_hooks; |
df38ffef | 1843 | if (write_symbols == NO_DEBUG) |
93415288 | 1844 | ; |
f5e99456 | 1845 | #if defined(DBX_DEBUGGING_INFO) |
df38ffef | 1846 | else if (write_symbols == DBX_DEBUG) |
f5e99456 | 1847 | debug_hooks = &dbx_debug_hooks; |
4291d9c8 | 1848 | #endif |
f5e99456 | 1849 | #if defined(XCOFF_DEBUGGING_INFO) |
df38ffef | 1850 | else if (write_symbols == XCOFF_DEBUG) |
f5e99456 | 1851 | debug_hooks = &xcoff_debug_hooks; |
3d5cdd42 | 1852 | #endif |
f5e99456 | 1853 | #ifdef SDB_DEBUGGING_INFO |
df38ffef | 1854 | else if (write_symbols == SDB_DEBUG) |
f5e99456 NB |
1855 | debug_hooks = &sdb_debug_hooks; |
1856 | #endif | |
f5e99456 | 1857 | #ifdef DWARF2_DEBUGGING_INFO |
df38ffef | 1858 | else if (write_symbols == DWARF2_DEBUG) |
f5e99456 | 1859 | debug_hooks = &dwarf2_debug_hooks; |
3d5cdd42 | 1860 | #endif |
7a0c8d71 | 1861 | #ifdef VMS_DEBUGGING_INFO |
df38ffef | 1862 | else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
7a0c8d71 DR |
1863 | debug_hooks = &vmsdbg_debug_hooks; |
1864 | #endif | |
df38ffef NB |
1865 | else |
1866 | error ("target system does not support the \"%s\" debug format", | |
1867 | debug_type_names[write_symbols]); | |
4291d9c8 | 1868 | |
014a1138 | 1869 | /* Now we know which debug output will be used so we can set |
21ef99b8 | 1870 | flag_var_tracking, flag_rename_registers if the user has |
38d396e5 PB |
1871 | not specified them. */ |
1872 | if (debug_info_level < DINFO_LEVEL_NORMAL | |
1873 | || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
014a1138 | 1874 | { |
38d396e5 PB |
1875 | if (flag_var_tracking == 1) |
1876 | { | |
1877 | if (debug_info_level < DINFO_LEVEL_NORMAL) | |
d4ee4d25 | 1878 | warning (0, "variable tracking requested, but useless unless " |
38d396e5 PB |
1879 | "producing debug info"); |
1880 | else | |
d4ee4d25 | 1881 | warning (0, "variable tracking requested, but not supported " |
38d396e5 PB |
1882 | "by this debug format"); |
1883 | } | |
1884 | flag_var_tracking = 0; | |
014a1138 JZ |
1885 | } |
1886 | ||
38d396e5 PB |
1887 | if (flag_rename_registers == AUTODETECT_FLAG_VAR_TRACKING) |
1888 | flag_rename_registers = default_debug_hooks->var_location | |
1889 | != do_nothing_debug_hooks.var_location; | |
1890 | ||
38d396e5 PB |
1891 | if (flag_var_tracking == AUTODETECT_FLAG_VAR_TRACKING) |
1892 | flag_var_tracking = optimize >= 1; | |
1893 | ||
f5e99456 NB |
1894 | /* If auxiliary info generation is desired, open the output file. |
1895 | This goes in the same directory as the source file--unlike | |
1896 | all the other output files. */ | |
1897 | if (flag_gen_aux_info) | |
1898 | { | |
1899 | aux_info_file = fopen (aux_info_file_name, "w"); | |
1900 | if (aux_info_file == 0) | |
971801ff | 1901 | fatal_error ("can%'t open %s: %m", aux_info_file_name); |
f5e99456 | 1902 | } |
309a8875 | 1903 | |
f5e99456 | 1904 | if (! targetm.have_named_sections) |
4291d9c8 | 1905 | { |
f5e99456 NB |
1906 | if (flag_function_sections) |
1907 | { | |
d4ee4d25 | 1908 | warning (0, "-ffunction-sections not supported for this target"); |
f5e99456 NB |
1909 | flag_function_sections = 0; |
1910 | } | |
1911 | if (flag_data_sections) | |
1912 | { | |
d4ee4d25 | 1913 | warning (0, "-fdata-sections not supported for this target"); |
f5e99456 NB |
1914 | flag_data_sections = 0; |
1915 | } | |
4291d9c8 | 1916 | } |
f5e99456 | 1917 | |
8456b95a | 1918 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 1919 | { |
d4ee4d25 | 1920 | warning (0, "-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 1921 | flag_function_sections = 0; |
3d5cdd42 | 1922 | } |
f5e99456 | 1923 | |
0dd0e980 JH |
1924 | #ifndef HAVE_prefetch |
1925 | if (flag_prefetch_loop_arrays) | |
1926 | { | |
d4ee4d25 | 1927 | warning (0, "-fprefetch-loop-arrays not supported for this target"); |
0dd0e980 JH |
1928 | flag_prefetch_loop_arrays = 0; |
1929 | } | |
6d9901e7 ZD |
1930 | if (flag_speculative_prefetching) |
1931 | { | |
1932 | if (flag_speculative_prefetching_set) | |
d4ee4d25 | 1933 | warning (0, "-fspeculative-prefetching not supported for this target"); |
6d9901e7 ZD |
1934 | flag_speculative_prefetching = 0; |
1935 | } | |
0dd0e980 JH |
1936 | #else |
1937 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
1938 | { | |
d4ee4d25 | 1939 | warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); |
0dd0e980 JH |
1940 | flag_prefetch_loop_arrays = 0; |
1941 | } | |
6d9901e7 ZD |
1942 | if (flag_speculative_prefetching && !HAVE_prefetch) |
1943 | { | |
1944 | if (flag_speculative_prefetching_set) | |
d4ee4d25 | 1945 | warning (0, "-fspeculative-prefetching not supported for this target (try -march switches)"); |
6d9901e7 ZD |
1946 | flag_speculative_prefetching = 0; |
1947 | } | |
0dd0e980 JH |
1948 | #endif |
1949 | ||
1398974c JJ |
1950 | /* This combination of options isn't handled for i386 targets and doesn't |
1951 | make much sense anyway, so don't allow it. */ | |
1952 | if (flag_prefetch_loop_arrays && optimize_size) | |
1953 | { | |
d4ee4d25 | 1954 | warning (0, "-fprefetch-loop-arrays is not supported with -Os"); |
1398974c JJ |
1955 | flag_prefetch_loop_arrays = 0; |
1956 | } | |
1957 | ||
f5e99456 NB |
1958 | #ifndef OBJECT_FORMAT_ELF |
1959 | if (flag_function_sections && write_symbols != NO_DEBUG) | |
d4ee4d25 | 1960 | warning (0, "-ffunction-sections may affect debugging on some targets"); |
f5e99456 | 1961 | #endif |
52bfebf0 | 1962 | |
6de9cd9a DN |
1963 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ |
1964 | if (flag_signaling_nans) | |
1965 | flag_trapping_math = 1; | |
c7463669 RH |
1966 | |
1967 | /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ | |
1968 | if (flag_cx_limited_range) | |
1969 | flag_complex_method = 0; | |
4291d9c8 | 1970 | } |
ddc9542b | 1971 | |
c79043f3 | 1972 | /* Initialize the compiler back end. */ |
f5e99456 | 1973 | static void |
e25a75e6 | 1974 | backend_init (void) |
f5e99456 | 1975 | { |
f5e99456 NB |
1976 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
1977 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
7a0c8d71 | 1978 | #ifdef VMS_DEBUGGING_INFO |
f9da5064 | 1979 | /* Enable line number info for traceback. */ |
7a0c8d71 DR |
1980 | || debug_info_level > DINFO_LEVEL_NONE |
1981 | #endif | |
165b54c3 | 1982 | || flag_test_coverage); |
28420116 | 1983 | |
cf94b0fc | 1984 | init_rtlanal (); |
28420116 | 1985 | init_regs (); |
6cde4876 | 1986 | init_fake_stack_mems (); |
f5e99456 | 1987 | init_alias_once (); |
f5e99456 NB |
1988 | init_loop (); |
1989 | init_reload (); | |
1990 | init_function_once (); | |
f5e99456 | 1991 | init_varasm_once (); |
f5e99456 NB |
1992 | |
1993 | /* The following initialization functions need to generate rtl, so | |
1994 | provide a dummy function context for them. */ | |
1995 | init_dummy_function_start (); | |
1996 | init_expmed (); | |
f5e99456 NB |
1997 | if (flag_caller_saves) |
1998 | init_caller_save (); | |
1999 | expand_dummy_function_end (); | |
2000 | } | |
ddc9542b | 2001 | |
0e9e1e0a | 2002 | /* Language-dependent initialization. Returns nonzero on success. */ |
22703ccc | 2003 | static int |
e25a75e6 | 2004 | lang_dependent_init (const char *name) |
4291d9c8 | 2005 | { |
c1667470 | 2006 | location_t save_loc = input_location; |
f5e99456 | 2007 | if (dump_base_name == 0) |
9f8628ba | 2008 | dump_base_name = name && name[0] ? name : "gccdump"; |
26182e15 | 2009 | |
4bfec483 | 2010 | /* Other front-end initialization. */ |
c1667470 PB |
2011 | #ifdef USE_MAPPED_LOCATION |
2012 | input_location = BUILTINS_LOCATION; | |
2013 | #else | |
2014 | input_filename = "<built-in>"; | |
2015 | input_line = 0; | |
2016 | #endif | |
ae2bcd98 | 2017 | if (lang_hooks.init () == 0) |
22703ccc | 2018 | return 0; |
c1667470 | 2019 | input_location = save_loc; |
4291d9c8 | 2020 | |
f5e99456 | 2021 | init_asm_output (name); |
3d5cdd42 | 2022 | |
f5e99456 NB |
2023 | /* These create various _DECL nodes, so need to be called after the |
2024 | front end is initialized. */ | |
2025 | init_eh (); | |
2026 | init_optabs (); | |
7ab0121e JW |
2027 | |
2028 | /* The following initialization functions need to generate rtl, so | |
2029 | provide a dummy function context for them. */ | |
2030 | init_dummy_function_start (); | |
1f8c3c5b | 2031 | init_expr_once (); |
7ab0121e | 2032 | expand_dummy_function_end (); |
3d5cdd42 | 2033 | |
f5e99456 NB |
2034 | /* If dbx symbol table desired, initialize writing it and output the |
2035 | predefined types. */ | |
2036 | timevar_push (TV_SYMOUT); | |
4291d9c8 | 2037 | |
f5e99456 NB |
2038 | #ifdef DWARF2_UNWIND_INFO |
2039 | if (dwarf2out_do_frame ()) | |
2040 | dwarf2out_frame_init (); | |
2041 | #endif | |
4291d9c8 | 2042 | |
f5e99456 NB |
2043 | /* Now we have the correct original filename, we can initialize |
2044 | debug output. */ | |
2045 | (*debug_hooks->init) (name); | |
4291d9c8 | 2046 | |
f5e99456 | 2047 | timevar_pop (TV_SYMOUT); |
22703ccc NB |
2048 | |
2049 | return 1; | |
2050 | } | |
ddc9542b | 2051 | |
22703ccc NB |
2052 | /* Clean up: close opened files, etc. */ |
2053 | ||
2054 | static void | |
e25a75e6 | 2055 | finalize (void) |
22703ccc NB |
2056 | { |
2057 | /* Close the dump files. */ | |
2058 | if (flag_gen_aux_info) | |
2059 | { | |
2060 | fclose (aux_info_file); | |
2061 | if (errorcount) | |
2062 | unlink (aux_info_file_name); | |
2063 | } | |
2064 | ||
2065 | /* Close non-debugging input and output files. Take special care to note | |
2066 | whether fclose returns an error, since the pages might still be on the | |
2067 | buffer chain while the file is open. */ | |
2068 | ||
2069 | if (asm_out_file) | |
2070 | { | |
2071 | if (ferror (asm_out_file) != 0) | |
fa6ef813 | 2072 | fatal_error ("error writing to %s: %m", asm_file_name); |
22703ccc | 2073 | if (fclose (asm_out_file) != 0) |
fa6ef813 | 2074 | fatal_error ("error closing %s: %m", asm_file_name); |
22703ccc NB |
2075 | } |
2076 | ||
f6db1481 | 2077 | finish_optimization_passes (); |
22703ccc NB |
2078 | |
2079 | if (mem_report) | |
2080 | { | |
2081 | ggc_print_statistics (); | |
2082 | stringpool_statistics (); | |
2083 | dump_tree_statistics (); | |
439a7e54 | 2084 | dump_rtx_statistics (); |
9b57b627 | 2085 | dump_varray_statistics (); |
1e0f41c9 | 2086 | dump_alloc_pool_statistics (); |
b9dcdee4 | 2087 | dump_ggc_loc_statistics (); |
22703ccc NB |
2088 | } |
2089 | ||
2090 | /* Free up memory for the benefit of leak detectors. */ | |
2091 | free_reg_info (); | |
2092 | ||
2093 | /* Language-specific end of compilation actions. */ | |
ae2bcd98 | 2094 | lang_hooks.finish (); |
f5e99456 | 2095 | } |
ddc9542b | 2096 | |
4d6baafa NB |
2097 | /* Initialize the compiler, and compile the input file. */ |
2098 | static void | |
e25a75e6 | 2099 | do_compile (void) |
f5e99456 | 2100 | { |
09b04f2d NB |
2101 | /* Initialize timing first. The C front ends read the main file in |
2102 | the post_options hook, and C++ does file timings. */ | |
2103 | if (time_report || !quiet_flag || flag_detailed_statistics) | |
2104 | timevar_init (); | |
a9915c78 RK |
2105 | timevar_start (TV_TOTAL); |
2106 | ||
09b04f2d NB |
2107 | process_options (); |
2108 | ||
2109 | /* Don't do any more if an error has already occurred. */ | |
2110 | if (!errorcount) | |
2111 | { | |
e59ba1bc JW |
2112 | /* This must be run always, because it is needed to compute the FP |
2113 | predefined macros, such as __LDBL_MAX__, for targets using non | |
2114 | default FP formats. */ | |
2115 | init_adjust_machine_modes (); | |
2116 | ||
09b04f2d NB |
2117 | /* Set up the back-end if requested. */ |
2118 | if (!no_backend) | |
2119 | backend_init (); | |
f5e99456 | 2120 | |
09b04f2d | 2121 | /* Language-dependent initialization. Returns true on success. */ |
d7b42618 | 2122 | if (lang_dependent_init (main_input_filename)) |
f6db1481 | 2123 | compile_file (); |
a194aa56 | 2124 | |
09b04f2d NB |
2125 | finalize (); |
2126 | } | |
f5e99456 NB |
2127 | |
2128 | /* Stop timing and print the times. */ | |
2129 | timevar_stop (TV_TOTAL); | |
2130 | timevar_print (stderr); | |
4d6baafa | 2131 | } |
ddc9542b | 2132 | |
4d6baafa | 2133 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
4d6baafa NB |
2134 | Exit code is FATAL_EXIT_CODE if can't open files or if there were |
2135 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
2136 | ||
2137 | It is not safe to call this function more than once. */ | |
2138 | ||
2139 | int | |
b86f6cd9 | 2140 | toplev_main (unsigned int argc, const char **argv) |
4d6baafa | 2141 | { |
b86f6cd9 NB |
2142 | save_argv = argv; |
2143 | ||
4d6baafa | 2144 | /* Initialization of GCC's environment, and diagnostics. */ |
9cabb1d8 | 2145 | general_init (argv[0]); |
4d6baafa NB |
2146 | |
2147 | /* Parse the options and do minimal processing; basically just | |
2148 | enough to default flags appropriately. */ | |
9756310a | 2149 | decode_options (argc, argv); |
4d6baafa | 2150 | |
c07e5477 NS |
2151 | randomize (); |
2152 | ||
4d6baafa | 2153 | /* Exit early if we can (e.g. -help). */ |
c79043f3 | 2154 | if (!exit_after_options) |
09b04f2d | 2155 | do_compile (); |
f5e99456 NB |
2156 | |
2157 | if (errorcount || sorrycount) | |
2158 | return (FATAL_EXIT_CODE); | |
2159 | ||
2160 | return (SUCCESS_EXIT_CODE); | |
4291d9c8 | 2161 | } |