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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, |
2d593c86 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
3a3315f7 | 4 | Free Software Foundation, Inc. |
4291d9c8 | 5 | |
1322177d | 6 | This file is part of GCC. |
4291d9c8 | 7 | |
1322177d LB |
8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 11 | version. |
4291d9c8 | 12 | |
1322177d LB |
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
4291d9c8 RS |
17 | |
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
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" |
058e97ec | 69 | #include "ira.h" |
5262d6b6 | 70 | #include "dwarf2asm.h" |
c0e7830f | 71 | #include "integrate.h" |
efdc7e19 | 72 | #include "real.h" |
a51d908e | 73 | #include "debug.h" |
7c262518 | 74 | #include "target.h" |
d23c55c2 | 75 | #include "langhooks.h" |
0478a14c | 76 | #include "cfglayout.h" |
3d436d2a | 77 | #include "cfgloop.h" |
476d9098 | 78 | #include "hosthooks.h" |
b255a036 | 79 | #include "cgraph.h" |
2772ef3e | 80 | #include "opts.h" |
5b0e2409 | 81 | #include "coverage.h" |
fca9dc00 | 82 | #include "value-prof.h" |
40ca90bf | 83 | #include "alloc-pool.h" |
ccab73c3 | 84 | #include "tree-mudflap.h" |
438d798f | 85 | #include "tree-pass.h" |
726a989a | 86 | #include "gimple.h" |
5006671f | 87 | #include "tree-ssa-alias.h" |
68a607d8 | 88 | #include "plugin.h" |
f246a305 | 89 | |
76ead72b RL |
90 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
91 | #include "dwarf2out.h" | |
92 | #endif | |
93 | ||
4f70758f | 94 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
95 | #include "dbxout.h" |
96 | #endif | |
97 | ||
98 | #ifdef SDB_DEBUGGING_INFO | |
99 | #include "sdbout.h" | |
100 | #endif | |
440aabf8 NB |
101 | |
102 | #ifdef XCOFF_DEBUGGING_INFO | |
103 | #include "xcoffout.h" /* Needed for external data | |
104 | declarations for e.g. AIX 4.x. */ | |
105 | #endif | |
ddc9542b | 106 | |
b86f6cd9 | 107 | static void general_init (const char *); |
e25a75e6 AJ |
108 | static void do_compile (void); |
109 | static void process_options (void); | |
110 | static void backend_init (void); | |
111 | static int lang_dependent_init (const char *); | |
112 | static void init_asm_output (const char *); | |
113 | static void finalize (void); | |
114 | ||
e25a75e6 AJ |
115 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
116 | static void setup_core_dumping (void); | |
117 | static void compile_file (void); | |
e25a75e6 | 118 | |
ff45c01e NB |
119 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
120 | static int set_yydebug; | |
121 | ||
4bfec483 NB |
122 | /* True if we don't need a backend (e.g. preprocessing only). */ |
123 | static bool no_backend; | |
124 | ||
3d5cdd42 DE |
125 | /* Length of line when printing switch values. */ |
126 | #define MAX_LINE 75 | |
127 | ||
4291d9c8 RS |
128 | /* Name of program invoked, sans directories. */ |
129 | ||
7adfcfed | 130 | const char *progname; |
4291d9c8 | 131 | |
b86f6cd9 NB |
132 | /* Copy of argument vector to toplev_main. */ |
133 | static const char **save_argv; | |
ddc9542b | 134 | |
4291d9c8 RS |
135 | /* Name of top-level original source file (what was input to cpp). |
136 | This comes from the #-command at the beginning of the actual input. | |
137 | If there isn't any there, then this is the cc1 input file name. */ | |
138 | ||
3b304f5b | 139 | const char *main_input_filename; |
4291d9c8 | 140 | |
38d396e5 PB |
141 | /* Used to enable -fvar-tracking, -fweb and -frename-registers according |
142 | to optimize and default_debug_hooks in process_options (). */ | |
2928d0f8 | 143 | #define AUTODETECT_VALUE 2 |
38d396e5 | 144 | |
6060edcb | 145 | /* Current position in real source file. */ |
4291d9c8 | 146 | |
6060edcb | 147 | location_t input_location; |
4291d9c8 | 148 | |
5ffeb913 | 149 | struct line_maps *line_table; |
50f59cd7 | 150 | |
4291d9c8 RS |
151 | /* Name to use as base of names for dump output files. */ |
152 | ||
87e11268 | 153 | const char *dump_base_name; |
4291d9c8 | 154 | |
ea67fe71 NS |
155 | /* Name to use as a base for auxiliary output files. */ |
156 | ||
d185d268 | 157 | const char *aux_base_name; |
ea67fe71 | 158 | |
2f908293 SP |
159 | /* Prefix for profile data files */ |
160 | const char *profile_data_prefix; | |
161 | ||
a27fb29b RS |
162 | /* A mask of target_flags that includes bit X if X was set or cleared |
163 | on the command line. */ | |
164 | ||
165 | int target_flags_explicit; | |
166 | ||
a51d908e NB |
167 | /* Debug hooks - dependent upon command line options. */ |
168 | ||
df38ffef | 169 | const struct gcc_debug_hooks *debug_hooks; |
a51d908e | 170 | |
38d396e5 PB |
171 | /* Debug hooks - target default. */ |
172 | ||
173 | static const struct gcc_debug_hooks *default_debug_hooks; | |
174 | ||
61098249 RH |
175 | /* Other flags saying which kinds of debugging dump have been requested. */ |
176 | ||
177 | int rtl_dump_and_exit; | |
178 | int flag_print_asm_name; | |
735a0e33 | 179 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
180 | |
181 | /* Name for output file of assembly code, specified with -o. */ | |
182 | ||
d185d268 | 183 | const char *asm_file_name; |
4291d9c8 | 184 | |
4291d9c8 RS |
185 | /* Nonzero means do optimizations. -O. |
186 | Particular numeric values stand for particular amounts of optimization; | |
187 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
188 | ones are not controlled directly by this variable. Instead, they are | |
189 | controlled by individual `flag_...' variables that are defaulted | |
190 | based on this variable. */ | |
191 | ||
192 | int optimize = 0; | |
193 | ||
c6aded7c | 194 | /* Nonzero means optimize for size. -Os. |
0e9e1e0a KH |
195 | The only valid values are zero and nonzero. When optimize_size is |
196 | nonzero, optimize defaults to 2, but certain individual code | |
c6aded7c AG |
197 | bloating optimizations are disabled. */ |
198 | ||
199 | int optimize_size = 0; | |
200 | ||
00262c8a ML |
201 | /* The FUNCTION_DECL for the function currently being compiled, |
202 | or 0 if between functions. */ | |
203 | tree current_function_decl; | |
204 | ||
375d2edc | 205 | /* Set to the FUNC_BEGIN label of the current function, or NULL |
00262c8a | 206 | if none. */ |
375d2edc | 207 | const char * current_function_func_begin_label; |
00262c8a | 208 | |
272d0bee | 209 | /* Nonzero means to collect statistics which might be expensive |
0e5921e8 ZW |
210 | and to print them when we are done. */ |
211 | int flag_detailed_statistics = 0; | |
212 | ||
4ed43216 | 213 | /* A random sequence of characters, unless overridden by user. */ |
403d4851 | 214 | static const char *flag_random_seed; |
c07e5477 NS |
215 | |
216 | /* A local time stamp derived from the time of compilation. It will be | |
217 | zero if the system cannot provide a time. It will be -1u, if the | |
218 | user has specified a particular random seed. */ | |
219 | unsigned local_tick; | |
220 | ||
4291d9c8 RS |
221 | /* -f flags. */ |
222 | ||
223 | /* Nonzero means `char' should be signed. */ | |
224 | ||
225 | int flag_signed_char; | |
226 | ||
32770746 PB |
227 | /* Nonzero means give an enum type only as many bytes as it needs. A value |
228 | of 2 means it has not yet been initialized. */ | |
4291d9c8 RS |
229 | |
230 | int flag_short_enums; | |
231 | ||
958ec8ca JW |
232 | /* Nonzero if structures and unions should be returned in memory. |
233 | ||
234 | This should only be defined if compatibility with another compiler or | |
235 | with an ABI is needed, because it results in slower code. */ | |
236 | ||
237 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
238 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
239 | #endif | |
240 | ||
4291d9c8 RS |
241 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
242 | ||
958ec8ca | 243 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 | 244 | |
c64f913e CB |
245 | /* 0 means straightforward implementation of complex divide acceptable. |
246 | 1 means wide ranges of inputs must work for complex divide. | |
7e7e470f | 247 | 2 means C99-like requirements for complex multiply and divide. */ |
c64f913e | 248 | |
c7463669 | 249 | int flag_complex_method = 1; |
c64f913e | 250 | |
4291d9c8 RS |
251 | /* Nonzero means we should be saving declaration info into a .X file. */ |
252 | ||
253 | int flag_gen_aux_info = 0; | |
254 | ||
f246a305 RS |
255 | /* Specified name of aux-info file. */ |
256 | ||
d185d268 | 257 | const char *aux_info_file_name; |
f246a305 | 258 | |
24a4dd31 JJ |
259 | /* Nonzero if we are compiling code for a shared library, zero for |
260 | executable. */ | |
261 | ||
262 | int flag_shlib; | |
263 | ||
43b3a5b1 ZL |
264 | /* Generate code for GNU or NeXT Objective-C runtime environment. */ |
265 | ||
266 | #ifdef NEXT_OBJC_RUNTIME | |
267 | int flag_next_runtime = 1; | |
268 | #else | |
269 | int flag_next_runtime = 0; | |
270 | #endif | |
271 | ||
3d78f2e9 RH |
272 | /* Set to the default thread-local storage (tls) model to use. */ |
273 | ||
755ac5d4 | 274 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
3d78f2e9 | 275 | |
7db7ed3c VM |
276 | /* Set the default region and algorithm for the integrated register |
277 | allocator. */ | |
058e97ec | 278 | |
7db7ed3c VM |
279 | enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB; |
280 | enum ira_region flag_ira_region = IRA_REGION_MIXED; | |
058e97ec VM |
281 | |
282 | /* Set the default value for -fira-verbose. */ | |
283 | ||
284 | unsigned int flag_ira_verbose = 5; | |
285 | ||
8ce94e44 JM |
286 | /* Set the default for excess precision. */ |
287 | ||
288 | enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT; | |
289 | enum excess_precision flag_excess_precision = EXCESS_PRECISION_DEFAULT; | |
290 | ||
4291d9c8 RS |
291 | /* Nonzero means change certain warnings into errors. |
292 | Usually these are warnings about failure to conform to some standard. */ | |
293 | ||
294 | int flag_pedantic_errors = 0; | |
295 | ||
393eda6a MLI |
296 | /* Nonzero means make permerror produce warnings instead of errors. */ |
297 | ||
298 | int flag_permissive = 0; | |
299 | ||
3d5cdd42 DE |
300 | /* -dA causes debug commentary information to be produced in |
301 | the generated assembly code (to make it more readable). This option | |
302 | is generally only of use to those who actually need to read the | |
303 | generated assembly code (perhaps while debugging the compiler itself). | |
304 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
305 | to be a catchall for printing debug information in the assembler file. */ | |
306 | ||
307 | int flag_debug_asm = 0; | |
9a631e8e | 308 | |
c349e40b SC |
309 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
310 | ||
311 | int flag_dump_rtl_in_asm = 0; | |
312 | ||
a157febd GK |
313 | /* When non-NULL, indicates that whenever space is allocated on the |
314 | stack, the resulting stack pointer must not pass this | |
315 | address---that is, for stacks that grow downward, the stack pointer | |
316 | must always be greater than or equal to this address; for stacks | |
317 | that grow upward, the stack pointer must be less than this address. | |
318 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
319 | the support provided depends on the backend. */ | |
320 | rtx stack_limit_rtx; | |
321 | ||
014a1138 | 322 | /* Nonzero if we should track variables. When |
2928d0f8 | 323 | flag_var_tracking == AUTODETECT_VALUE it will be set according |
014a1138 | 324 | to optimize, debug_info_level and debug_hooks in process_options (). */ |
2928d0f8 | 325 | int flag_var_tracking = AUTODETECT_VALUE; |
014a1138 | 326 | |
b38f3813 EB |
327 | /* Type of stack check. */ |
328 | enum stack_check_type flag_stack_check = NO_STACK_CHECK; | |
329 | ||
9fb32434 CT |
330 | /* True if the user has tagged the function with the 'section' |
331 | attribute. */ | |
332 | ||
333 | bool user_defined_section_attribute = false; | |
334 | ||
854a97f0 KH |
335 | /* Values of the -falign-* flags: how much to align labels in code. |
336 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
337 | For each variable, there is an _log variant which is the power |
338 | of two not less than the variable, for .align output. */ | |
339 | ||
efa3896a | 340 | int align_loops_log; |
2cca7283 | 341 | int align_loops_max_skip; |
efa3896a | 342 | int align_jumps_log; |
2cca7283 | 343 | int align_jumps_max_skip; |
efa3896a | 344 | int align_labels_log; |
2cca7283 | 345 | int align_labels_max_skip; |
efa3896a GK |
346 | int align_functions_log; |
347 | ||
b8468bc7 NC |
348 | typedef struct |
349 | { | |
c083a819 KG |
350 | const char *const string; |
351 | int *const variable; | |
352 | const int on_value; | |
b8468bc7 NC |
353 | } |
354 | lang_independent_options; | |
355 | ||
c67e6e14 RS |
356 | /* Nonzero if subexpressions must be evaluated from left-to-right. */ |
357 | int flag_evaluation_order = 0; | |
358 | ||
19283265 | 359 | /* The user symbol prefix after having resolved same. */ |
87e11268 | 360 | const char *user_label_prefix; |
19283265 | 361 | |
c6d9a88c | 362 | static const param_info lang_independent_params[] = { |
e06c0feb | 363 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ |
47eb5b32 | 364 | { OPTION, DEFAULT, false, MIN, MAX, HELP }, |
c6d9a88c MM |
365 | #include "params.def" |
366 | #undef DEFPARAM | |
47eb5b32 | 367 | { NULL, 0, false, 0, 0, NULL } |
c6d9a88c MM |
368 | }; |
369 | ||
4291d9c8 RS |
370 | /* Output files for assembler code (real compiler output) |
371 | and debugging dumps. */ | |
372 | ||
373 | FILE *asm_out_file; | |
374 | FILE *aux_info_file; | |
c263766c | 375 | FILE *dump_file = NULL; |
29c431a1 | 376 | const char *dump_file_name; |
4291d9c8 | 377 | |
b20d9f0c AO |
378 | /* The current working directory of a translation. It's generally the |
379 | directory from which compilation was initiated, but a preprocessed | |
380 | file may specify the original directory in which it was | |
381 | created. */ | |
382 | ||
383 | static const char *src_pwd; | |
384 | ||
385 | /* Initialize src_pwd with the given string, and return true. If it | |
386 | was already initialized, return false. As a special case, it may | |
387 | be called with a NULL argument to test whether src_pwd has NOT been | |
388 | initialized yet. */ | |
389 | ||
390 | bool | |
391 | set_src_pwd (const char *pwd) | |
392 | { | |
393 | if (src_pwd) | |
0855eab7 CT |
394 | { |
395 | if (strcmp (src_pwd, pwd) == 0) | |
396 | return true; | |
397 | else | |
398 | return false; | |
399 | } | |
b20d9f0c AO |
400 | |
401 | src_pwd = xstrdup (pwd); | |
402 | return true; | |
403 | } | |
404 | ||
405 | /* Return the directory from which the translation unit was initiated, | |
406 | in case set_src_pwd() was not called before to assign it a | |
407 | different value. */ | |
408 | ||
409 | const char * | |
410 | get_src_pwd (void) | |
411 | { | |
412 | if (! src_pwd) | |
5f0c48ed GK |
413 | { |
414 | src_pwd = getpwd (); | |
415 | if (!src_pwd) | |
416 | src_pwd = "."; | |
417 | } | |
b20d9f0c AO |
418 | |
419 | return src_pwd; | |
420 | } | |
421 | ||
0761f342 GDR |
422 | /* Called when the start of a function definition is parsed, |
423 | this function prints on stderr the name of the function. */ | |
424 | void | |
425 | announce_function (tree decl) | |
426 | { | |
427 | if (!quiet_flag) | |
428 | { | |
429 | if (rtl_dump_and_exit) | |
4f1e4960 JM |
430 | fprintf (stderr, "%s ", |
431 | identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
0761f342 | 432 | else |
4f1e4960 JM |
433 | fprintf (stderr, " %s", |
434 | identifier_to_locale (lang_hooks.decl_printable_name (decl, 2))); | |
0761f342 GDR |
435 | fflush (stderr); |
436 | pp_needs_newline (global_dc->printer) = true; | |
c94ed7a1 | 437 | diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); |
0761f342 GDR |
438 | } |
439 | } | |
440 | ||
403d4851 AO |
441 | /* Initialize local_tick with the time of day, or -1 if |
442 | flag_random_seed is set. */ | |
c07e5477 NS |
443 | |
444 | static void | |
403d4851 | 445 | init_local_tick (void) |
c07e5477 NS |
446 | { |
447 | if (!flag_random_seed) | |
448 | { | |
c07e5477 NS |
449 | /* Get some more or less random data. */ |
450 | #ifdef HAVE_GETTIMEOFDAY | |
451 | { | |
403d4851 | 452 | struct timeval tv; |
fbfb16e2 | 453 | |
403d4851 | 454 | gettimeofday (&tv, NULL); |
c07e5477 NS |
455 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
456 | } | |
457 | #else | |
458 | { | |
c163ddca | 459 | time_t now = time (NULL); |
c07e5477 NS |
460 | |
461 | if (now != (time_t)-1) | |
462 | local_tick = (unsigned) now; | |
463 | } | |
464 | #endif | |
c07e5477 | 465 | } |
403d4851 | 466 | else |
c07e5477 NS |
467 | local_tick = -1; |
468 | } | |
469 | ||
403d4851 AO |
470 | /* Set up a default flag_random_seed and local_tick, unless the user |
471 | already specified one. Must be called after init_local_tick. */ | |
472 | ||
473 | static void | |
474 | init_random_seed (void) | |
475 | { | |
476 | unsigned HOST_WIDE_INT value; | |
477 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
478 | ||
479 | value = local_tick ^ getpid (); | |
480 | ||
481 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
482 | flag_random_seed = random_seed; | |
483 | } | |
484 | ||
485 | /* Obtain the random_seed string. Unless NOINIT, initialize it if | |
486 | it's not provided in the command line. */ | |
487 | ||
488 | const char * | |
489 | get_random_seed (bool noinit) | |
490 | { | |
491 | if (!flag_random_seed && !noinit) | |
492 | init_random_seed (); | |
493 | return flag_random_seed; | |
494 | } | |
495 | ||
496 | /* Modify the random_seed string to VAL. Return its previous | |
497 | value. */ | |
498 | ||
499 | const char * | |
500 | set_random_seed (const char *val) | |
501 | { | |
502 | const char *old = flag_random_seed; | |
503 | flag_random_seed = val; | |
504 | return old; | |
505 | } | |
c07e5477 | 506 | |
132e01b1 TP |
507 | /* Decode the string P as an integral parameter. |
508 | If the string is indeed an integer return its numeric value else | |
192babfd | 509 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
510 | If PNAME is zero just return DEFVAL, do not call error. */ |
511 | ||
132e01b1 | 512 | int |
e25a75e6 | 513 | read_integral_parameter (const char *p, const char *pname, const int defval) |
132e01b1 | 514 | { |
192babfd | 515 | const char *endp = p; |
132e01b1 TP |
516 | |
517 | while (*endp) | |
518 | { | |
0df6c2c7 | 519 | if (ISDIGIT (*endp)) |
132e01b1 TP |
520 | endp++; |
521 | else | |
192babfd TP |
522 | break; |
523 | } | |
524 | ||
525 | if (*endp != 0) | |
526 | { | |
527 | if (pname != 0) | |
971801ff | 528 | error ("invalid option argument %qs", pname); |
192babfd | 529 | return defval; |
132e01b1 TP |
530 | } |
531 | ||
532 | return atoi (p); | |
533 | } | |
4291d9c8 | 534 | |
a8a4fe0c GDR |
535 | /* When compiling with a recent enough GCC, we use the GNU C "extern inline" |
536 | for floor_log2 and exact_log2; see toplev.h. That construct, however, | |
537 | conflicts with the ISO C++ One Definition Rule. */ | |
538 | ||
aa994333 | 539 | #if GCC_VERSION < 3004 || !defined (__cplusplus) |
a8a4fe0c | 540 | |
73d10efa | 541 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
765d98c7 | 542 | If X is 0, return -1. */ |
4291d9c8 RS |
543 | |
544 | int | |
765d98c7 | 545 | floor_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 546 | { |
765d98c7 RH |
547 | int t = 0; |
548 | ||
73d10efa | 549 | if (x == 0) |
4291d9c8 | 550 | return -1; |
765d98c7 RH |
551 | |
552 | #ifdef CLZ_HWI | |
553 | t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); | |
554 | #else | |
555 | if (HOST_BITS_PER_WIDE_INT > 64) | |
144cbad0 | 556 | if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) |
73d10efa | 557 | t += 64; |
765d98c7 | 558 | if (HOST_BITS_PER_WIDE_INT > 32) |
144cbad0 | 559 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) |
73d10efa | 560 | t += 32; |
144cbad0 | 561 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) |
73d10efa | 562 | t += 16; |
144cbad0 | 563 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) |
73d10efa | 564 | t += 8; |
144cbad0 | 565 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) |
73d10efa | 566 | t += 4; |
144cbad0 | 567 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) |
73d10efa | 568 | t += 2; |
144cbad0 | 569 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) |
73d10efa | 570 | t += 1; |
765d98c7 RH |
571 | #endif |
572 | ||
73d10efa | 573 | return t; |
4291d9c8 RS |
574 | } |
575 | ||
73d10efa | 576 | /* Return the logarithm of X, base 2, considering X unsigned, |
765d98c7 | 577 | if X is a power of 2. Otherwise, returns -1. */ |
4291d9c8 RS |
578 | |
579 | int | |
765d98c7 | 580 | exact_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 581 | { |
765d98c7 | 582 | if (x != (x & -x)) |
73d10efa | 583 | return -1; |
765d98c7 RH |
584 | #ifdef CTZ_HWI |
585 | return x ? CTZ_HWI (x) : -1; | |
586 | #else | |
587 | return floor_log2 (x); | |
588 | #endif | |
4291d9c8 RS |
589 | } |
590 | ||
aa994333 | 591 | #endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */ |
a8a4fe0c | 592 | |
a7023245 | 593 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
c770ac2b ZW |
594 | into ICE messages, which is much more user friendly. In case the |
595 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
4291d9c8 RS |
596 | |
597 | static void | |
e25a75e6 | 598 | crash_signal (int signo) |
4291d9c8 | 599 | { |
c770ac2b | 600 | signal (signo, SIG_DFL); |
52351a5e RE |
601 | |
602 | /* If we crashed while processing an ASM statement, then be a little more | |
603 | graceful. It's most likely the user's fault. */ | |
604 | if (this_is_asm_operands) | |
605 | { | |
606 | output_operand_lossage ("unrecoverable error"); | |
607 | exit (FATAL_EXIT_CODE); | |
608 | } | |
609 | ||
9d533cb5 | 610 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
611 | } |
612 | ||
886e0865 GK |
613 | /* Arrange to dump core on error. (The regular error message is still |
614 | printed first, except in the case of abort().) */ | |
615 | ||
616 | static void | |
e25a75e6 | 617 | setup_core_dumping (void) |
886e0865 GK |
618 | { |
619 | #ifdef SIGABRT | |
620 | signal (SIGABRT, SIG_DFL); | |
621 | #endif | |
622 | #if defined(HAVE_SETRLIMIT) | |
623 | { | |
624 | struct rlimit rlim; | |
625 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 626 | fatal_error ("getting core file size maximum limit: %m"); |
886e0865 GK |
627 | rlim.rlim_cur = rlim.rlim_max; |
628 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 629 | fatal_error ("setting core file size limit to maximum: %m"); |
886e0865 GK |
630 | } |
631 | #endif | |
632 | diagnostic_abort_on_error (global_dc); | |
633 | } | |
634 | ||
635 | ||
4291d9c8 | 636 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 637 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 638 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 639 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
640 | |
641 | void | |
e25a75e6 | 642 | strip_off_ending (char *name, int len) |
4291d9c8 | 643 | { |
2290e0ec | 644 | int i; |
41077ce4 | 645 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
646 | { |
647 | if (name[len - i] == '.') | |
648 | { | |
649 | name[len - i] = '\0'; | |
650 | break; | |
651 | } | |
652 | } | |
4291d9c8 RS |
653 | } |
654 | ||
7dce5088 | 655 | /* Output a quoted string. */ |
0f41302f | 656 | |
7dce5088 | 657 | void |
e25a75e6 | 658 | output_quoted_string (FILE *asm_file, const char *string) |
7dce5088 | 659 | { |
e9a25f70 JL |
660 | #ifdef OUTPUT_QUOTED_STRING |
661 | OUTPUT_QUOTED_STRING (asm_file, string); | |
662 | #else | |
7dce5088 PE |
663 | char c; |
664 | ||
665 | putc ('\"', asm_file); | |
666 | while ((c = *string++) != 0) | |
667 | { | |
042cdf71 ZW |
668 | if (ISPRINT (c)) |
669 | { | |
670 | if (c == '\"' || c == '\\') | |
671 | putc ('\\', asm_file); | |
672 | putc (c, asm_file); | |
673 | } | |
674 | else | |
211a0cbe | 675 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
676 | } |
677 | putc ('\"', asm_file); | |
e9a25f70 | 678 | #endif |
7dce5088 PE |
679 | } |
680 | ||
4291d9c8 RS |
681 | /* Output a file name in the form wanted by System V. */ |
682 | ||
683 | void | |
e25a75e6 | 684 | output_file_directive (FILE *asm_file, const char *input_name) |
4291d9c8 | 685 | { |
00503146 AH |
686 | int len; |
687 | const char *na; | |
fbfb16e2 | 688 | |
00503146 AH |
689 | if (input_name == NULL) |
690 | input_name = "<stdin>"; | |
c8aea42c PB |
691 | else |
692 | input_name = remap_debug_filename (input_name); | |
00503146 AH |
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 | |
db5f8b93 RH |
714 | /* A subroutine of wrapup_global_declarations. We've come to the end of |
715 | the compilation unit. All deferred variables should be undeferred, | |
716 | and all incomplete decls should be finalized. */ | |
717 | ||
718 | void | |
719 | wrapup_global_declaration_1 (tree decl) | |
720 | { | |
721 | /* We're not deferring this any longer. Assignment is conditional to | |
722 | avoid needlessly dirtying PCH pages. */ | |
723 | if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
724 | && DECL_DEFER_OUTPUT (decl) != 0) | |
725 | DECL_DEFER_OUTPUT (decl) = 0; | |
726 | ||
727 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
728 | lang_hooks.finish_incomplete_decl (decl); | |
729 | } | |
730 | ||
731 | /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
732 | needs to be output. Return true if it is output. */ | |
733 | ||
734 | bool | |
735 | wrapup_global_declaration_2 (tree decl) | |
736 | { | |
737 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
738 | return false; | |
739 | ||
740 | /* Don't write out static consts, unless we still need them. | |
741 | ||
742 | We also keep static consts if not optimizing (for debugging), | |
743 | unless the user specified -fno-keep-static-consts. | |
744 | ??? They might be better written into the debug information. | |
745 | This is possible when using DWARF. | |
746 | ||
747 | A language processor that wants static constants to be always | |
748 | written out (even if it is not used) is responsible for | |
749 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
750 | calls rest_of_decl_compilation from finish_decl. | |
751 | One motivation for this is that is conventional in some | |
752 | environments to write things like: | |
753 | static const char rcsid[] = "... version string ..."; | |
754 | intending to force the string to be in the executable. | |
755 | ||
756 | A language processor that would prefer to have unneeded | |
757 | static constants "optimized away" would just defer writing | |
758 | them out until here. E.g. C++ does this, because static | |
759 | constants are often defined in header files. | |
760 | ||
761 | ??? A tempting alternative (for both C and C++) would be | |
762 | to force a constant to be written if and only if it is | |
763 | defined in a main file, as opposed to an include file. */ | |
764 | ||
765 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
766 | { | |
8a4a83ed | 767 | struct varpool_node *node; |
db5f8b93 | 768 | bool needed = true; |
8a4a83ed | 769 | node = varpool_node (decl); |
db5f8b93 RH |
770 | |
771 | if (node->finalized) | |
772 | needed = false; | |
773 | else if (node->alias) | |
774 | needed = false; | |
775 | else if (!cgraph_global_info_ready | |
776 | && (TREE_USED (decl) | |
777 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
778 | /* needed */; | |
779 | else if (node->needed) | |
780 | /* needed */; | |
781 | else if (DECL_COMDAT (decl)) | |
782 | needed = false; | |
783 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
784 | && (optimize || !flag_keep_static_consts | |
785 | || DECL_ARTIFICIAL (decl))) | |
786 | needed = false; | |
787 | ||
788 | if (needed) | |
789 | { | |
790 | rest_of_decl_compilation (decl, 1, 1); | |
791 | return true; | |
792 | } | |
793 | } | |
794 | ||
795 | return false; | |
796 | } | |
797 | ||
32291f94 MM |
798 | /* Do any final processing required for the declarations in VEC, of |
799 | which there are LEN. We write out inline functions and variables | |
800 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 801 | Returns nonzero if anything was put out. */ |
854a97f0 | 802 | |
db5f8b93 | 803 | bool |
e25a75e6 | 804 | wrapup_global_declarations (tree *vec, int len) |
32291f94 | 805 | { |
db5f8b93 | 806 | bool reconsider, output_something = false; |
32291f94 | 807 | int i; |
32291f94 MM |
808 | |
809 | for (i = 0; i < len; i++) | |
db5f8b93 | 810 | wrapup_global_declaration_1 (vec[i]); |
32291f94 MM |
811 | |
812 | /* Now emit any global variables or functions that we have been | |
813 | putting off. We need to loop in case one of the things emitted | |
814 | here references another one which comes earlier in the list. */ | |
815 | do | |
816 | { | |
db5f8b93 | 817 | reconsider = false; |
32291f94 | 818 | for (i = 0; i < len; i++) |
db5f8b93 | 819 | reconsider |= wrapup_global_declaration_2 (vec[i]); |
32291f94 | 820 | if (reconsider) |
db5f8b93 | 821 | output_something = true; |
32291f94 MM |
822 | } |
823 | while (reconsider); | |
824 | ||
825 | return output_something; | |
826 | } | |
827 | ||
db5f8b93 RH |
828 | /* A subroutine of check_global_declarations. Issue appropriate warnings |
829 | for the global declaration DECL. */ | |
830 | ||
831 | void | |
832 | check_global_declaration_1 (tree decl) | |
833 | { | |
834 | /* Warn about any function declared static but not defined. We don't | |
835 | warn about variables, because many programs have static variables | |
836 | that exist only to get some text into the object file. */ | |
837 | if (TREE_CODE (decl) == FUNCTION_DECL | |
838 | && DECL_INITIAL (decl) == 0 | |
839 | && DECL_EXTERNAL (decl) | |
840 | && ! DECL_ARTIFICIAL (decl) | |
841 | && ! TREE_NO_WARNING (decl) | |
842 | && ! TREE_PUBLIC (decl) | |
843 | && (warn_unused_function | |
844 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
845 | { | |
846 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
509c9d60 | 847 | pedwarn (input_location, 0, "%q+F used but never defined", decl); |
db5f8b93 | 848 | else |
c5409249 | 849 | warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl); |
db5f8b93 RH |
850 | /* This symbol is effectively an "extern" declaration now. */ |
851 | TREE_PUBLIC (decl) = 1; | |
852 | assemble_external (decl); | |
853 | } | |
854 | ||
855 | /* Warn about static fns or vars defined but not used. */ | |
856 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
857 | /* We don't warn about "static const" variables because the | |
858 | "rcs_id" idiom uses that construction. */ | |
859 | || (warn_unused_variable | |
860 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
861 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
862 | && ! TREE_USED (decl) | |
863 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
864 | to handle multiple external decls in different scopes. */ | |
eb2182e2 | 865 | && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) |
db5f8b93 RH |
866 | && ! DECL_EXTERNAL (decl) |
867 | && ! TREE_PUBLIC (decl) | |
868 | /* A volatile variable might be used in some non-obvious way. */ | |
869 | && ! TREE_THIS_VOLATILE (decl) | |
870 | /* Global register variables must be declared to reserve them. */ | |
871 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
872 | /* Otherwise, ask the language. */ | |
873 | && lang_hooks.decls.warn_unused_global (decl)) | |
c5409249 MLI |
874 | warning ((TREE_CODE (decl) == FUNCTION_DECL) |
875 | ? OPT_Wunused_function | |
876 | : OPT_Wunused_variable, | |
877 | "%q+D defined but not used", decl); | |
db5f8b93 RH |
878 | } |
879 | ||
32291f94 | 880 | /* Issue appropriate warnings for the global declarations in VEC (of |
db5f8b93 | 881 | which there are LEN). */ |
854a97f0 | 882 | |
32291f94 | 883 | void |
e25a75e6 | 884 | check_global_declarations (tree *vec, int len) |
32291f94 | 885 | { |
32291f94 MM |
886 | int i; |
887 | ||
888 | for (i = 0; i < len; i++) | |
db5f8b93 RH |
889 | check_global_declaration_1 (vec[i]); |
890 | } | |
32291f94 | 891 | |
db5f8b93 RH |
892 | /* Emit debugging information for all global declarations in VEC. */ |
893 | ||
894 | void | |
895 | emit_debug_global_declarations (tree *vec, int len) | |
896 | { | |
897 | int i; | |
898 | ||
899 | /* Avoid confusing the debug information machinery when there are errors. */ | |
900 | if (errorcount != 0 || sorrycount != 0) | |
901 | return; | |
902 | ||
903 | timevar_push (TV_SYMOUT); | |
904 | for (i = 0; i < len; i++) | |
905 | debug_hooks->global_decl (vec[i]); | |
906 | timevar_pop (TV_SYMOUT); | |
32291f94 | 907 | } |
032713aa | 908 | |
43f9ce02 GDR |
909 | /* Warn about a use of an identifier which was marked deprecated. */ |
910 | void | |
9b86d6bb | 911 | warn_deprecated_use (tree node, tree attr) |
43f9ce02 | 912 | { |
9b86d6bb L |
913 | const char *msg; |
914 | ||
43f9ce02 GDR |
915 | if (node == 0 || !warn_deprecated_decl) |
916 | return; | |
917 | ||
9b86d6bb L |
918 | if (!attr) |
919 | { | |
920 | if (DECL_P (node)) | |
921 | attr = DECL_ATTRIBUTES (node); | |
922 | else if (TYPE_P (node)) | |
923 | { | |
924 | tree decl = TYPE_STUB_DECL (node); | |
925 | if (decl) | |
926 | attr = lookup_attribute ("deprecated", | |
927 | TYPE_ATTRIBUTES (TREE_TYPE (decl))); | |
928 | } | |
929 | } | |
930 | ||
931 | if (attr) | |
932 | attr = lookup_attribute ("deprecated", attr); | |
933 | ||
934 | if (attr) | |
935 | msg = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr))); | |
936 | else | |
937 | msg = NULL; | |
938 | ||
43f9ce02 | 939 | if (DECL_P (node)) |
c1667470 PB |
940 | { |
941 | expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
9b86d6bb L |
942 | if (msg) |
943 | warning (OPT_Wdeprecated_declarations, | |
944 | "%qD is deprecated (declared at %s:%d): %s", | |
945 | node, xloc.file, xloc.line, msg); | |
946 | else | |
947 | warning (OPT_Wdeprecated_declarations, | |
948 | "%qD is deprecated (declared at %s:%d)", | |
949 | node, xloc.file, xloc.line); | |
c1667470 | 950 | } |
43f9ce02 GDR |
951 | else if (TYPE_P (node)) |
952 | { | |
4f1e4960 | 953 | tree what = NULL_TREE; |
43f9ce02 GDR |
954 | tree decl = TYPE_STUB_DECL (node); |
955 | ||
108ebf88 JM |
956 | if (TYPE_NAME (node)) |
957 | { | |
958 | if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
4f1e4960 | 959 | what = TYPE_NAME (node); |
108ebf88 JM |
960 | else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL |
961 | && DECL_NAME (TYPE_NAME (node))) | |
4f1e4960 | 962 | what = DECL_NAME (TYPE_NAME (node)); |
108ebf88 | 963 | } |
43f9ce02 | 964 | |
c1667470 | 965 | if (decl) |
43f9ce02 | 966 | { |
c1667470 PB |
967 | expanded_location xloc |
968 | = expand_location (DECL_SOURCE_LOCATION (decl)); | |
969 | if (what) | |
9b86d6bb L |
970 | { |
971 | if (msg) | |
972 | warning (OPT_Wdeprecated_declarations, | |
973 | "%qE is deprecated (declared at %s:%d): %s", | |
974 | what, xloc.file, xloc.line, msg); | |
975 | else | |
976 | warning (OPT_Wdeprecated_declarations, | |
977 | "%qE is deprecated (declared at %s:%d)", what, | |
978 | xloc.file, xloc.line); | |
979 | } | |
43f9ce02 | 980 | else |
9b86d6bb L |
981 | { |
982 | if (msg) | |
983 | warning (OPT_Wdeprecated_declarations, | |
984 | "type is deprecated (declared at %s:%d): %s", | |
985 | xloc.file, xloc.line, msg); | |
986 | else | |
987 | warning (OPT_Wdeprecated_declarations, | |
988 | "type is deprecated (declared at %s:%d)", | |
989 | xloc.file, xloc.line); | |
990 | } | |
43f9ce02 | 991 | } |
43f9ce02 | 992 | else |
c1667470 PB |
993 | { |
994 | if (what) | |
9b86d6bb L |
995 | { |
996 | if (msg) | |
997 | warning (OPT_Wdeprecated_declarations, "%qE is deprecated: %s", | |
998 | what, msg); | |
999 | else | |
1000 | warning (OPT_Wdeprecated_declarations, "%qE is deprecated", what); | |
1001 | } | |
108ebf88 | 1002 | else |
9b86d6bb L |
1003 | { |
1004 | if (msg) | |
1005 | warning (OPT_Wdeprecated_declarations, "type is deprecated: %s", | |
1006 | msg); | |
1007 | else | |
1008 | warning (OPT_Wdeprecated_declarations, "type is deprecated"); | |
1009 | } | |
c1667470 | 1010 | } |
43f9ce02 GDR |
1011 | } |
1012 | } | |
1013 | ||
f5e99456 NB |
1014 | /* Compile an entire translation unit. Write a file of assembly |
1015 | output and various debugging dumps. */ | |
4291d9c8 RS |
1016 | |
1017 | static void | |
e25a75e6 | 1018 | compile_file (void) |
4291d9c8 | 1019 | { |
4291d9c8 RS |
1020 | /* Initialize yet another pass. */ |
1021 | ||
dae4174e TT |
1022 | ggc_protect_identifiers = true; |
1023 | ||
9b3e897d | 1024 | init_cgraph (); |
b93a436e | 1025 | init_final (main_input_filename); |
ca29da43 | 1026 | coverage_init (aux_base_name); |
9fe0cb7d | 1027 | statistics_init (); |
4291d9c8 | 1028 | |
2a9a326b | 1029 | timevar_push (TV_PARSE); |
4291d9c8 | 1030 | |
52dabb6c NB |
1031 | /* Call the parser, which parses the entire file (calling |
1032 | rest_of_compilation for each function). */ | |
ae2bcd98 | 1033 | lang_hooks.parse_file (set_yydebug); |
4291d9c8 | 1034 | |
4291d9c8 RS |
1035 | /* Compilation is now finished except for writing |
1036 | what's left of the symbol table output. */ | |
2a9a326b | 1037 | timevar_pop (TV_PARSE); |
4291d9c8 | 1038 | |
e4305460 | 1039 | if (flag_syntax_only) |
22703ccc | 1040 | return; |
1fe65c00 | 1041 | |
dae4174e TT |
1042 | ggc_protect_identifiers = false; |
1043 | ||
ae2bcd98 | 1044 | lang_hooks.decls.final_write_globals (); |
e4305460 GK |
1045 | |
1046 | if (errorcount || sorrycount) | |
1047 | return; | |
1048 | ||
8a4a83ed | 1049 | varpool_assemble_pending_decls (); |
e4d5432a | 1050 | finish_aliases_2 (); |
e69529cd | 1051 | |
ccab73c3 FCE |
1052 | /* Likewise for mudflap static object registrations. */ |
1053 | if (flag_mudflap) | |
1054 | mudflap_finish_file (); | |
1055 | ||
8893239d RH |
1056 | /* Likewise for emulated thread-local storage. */ |
1057 | if (!targetm.have_tls) | |
1058 | emutls_finish (); | |
1059 | ||
1d3dbd99 | 1060 | output_shared_constant_pool (); |
aacd3885 RS |
1061 | output_object_blocks (); |
1062 | ||
4b8af8d9 | 1063 | /* Write out any pending weak symbol declarations. */ |
4b8af8d9 JM |
1064 | weak_finish (); |
1065 | ||
854a97f0 | 1066 | /* Do dbx symbols. */ |
2a9a326b | 1067 | timevar_push (TV_SYMOUT); |
7f905405 | 1068 | |
658f32fd | 1069 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
0021b564 JM |
1070 | if (dwarf2out_do_frame ()) |
1071 | dwarf2out_frame_finish (); | |
1072 | #endif | |
1073 | ||
e2a12aca | 1074 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 1075 | timevar_pop (TV_SYMOUT); |
9a666dda | 1076 | |
4291d9c8 RS |
1077 | /* Output some stuff at end of file if nec. */ |
1078 | ||
2a1ee410 RH |
1079 | dw2_output_indirect_constants (); |
1080 | ||
c47c29c8 | 1081 | /* Flush any pending external directives. */ |
bc6d19ab ZW |
1082 | process_pending_assemble_externals (); |
1083 | ||
acb0db7b ZW |
1084 | /* Attach a special .ident directive to the end of the file to identify |
1085 | the version of GCC which compiled this code. The format of the .ident | |
1086 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1087 | #ifdef IDENT_ASM_OP | |
1088 | if (!flag_no_ident) | |
2f41c1d6 PB |
1089 | { |
1090 | const char *pkg_version = "(GNU) "; | |
1091 | ||
1092 | if (strcmp ("(GCC) ", pkgversion_string)) | |
1093 | pkg_version = pkgversion_string; | |
1094 | fprintf (asm_out_file, "%s\"GCC: %s%s\"\n", | |
1095 | IDENT_ASM_OP, pkg_version, version_string); | |
1096 | } | |
acb0db7b | 1097 | #endif |
57bef48e AP |
1098 | |
1099 | /* This must be at the end. Some target ports emit end of file directives | |
1100 | into the assembly file here, and hence we can not output anything to the | |
1101 | assembly file after this point. */ | |
1102 | targetm.asm_out.file_end (); | |
4291d9c8 | 1103 | } |
ddc9542b | 1104 | |
f6db1481 | 1105 | /* Parse a -d... command line switch. */ |
4291d9c8 RS |
1106 | |
1107 | void | |
f6db1481 | 1108 | decode_d_option (const char *arg) |
4291d9c8 | 1109 | { |
f6db1481 | 1110 | int c; |
33c21f5c | 1111 | |
f6db1481 RH |
1112 | while (*arg) |
1113 | switch (c = *arg++) | |
1114 | { | |
1115 | case 'A': | |
1116 | flag_debug_asm = 1; | |
1117 | break; | |
1118 | case 'p': | |
1119 | flag_print_asm_name = 1; | |
1120 | break; | |
1121 | case 'P': | |
1122 | flag_dump_rtl_in_asm = 1; | |
1123 | flag_print_asm_name = 1; | |
1124 | break; | |
1125 | case 'v': | |
1126 | graph_dump_format = vcg; | |
1127 | break; | |
1128 | case 'x': | |
1129 | rtl_dump_and_exit = 1; | |
1130 | break; | |
1131 | case 'y': | |
1132 | set_yydebug = 1; | |
1133 | break; | |
1134 | case 'D': /* These are handled by the preprocessor. */ | |
1135 | case 'I': | |
8ddbbcae JH |
1136 | case 'M': |
1137 | case 'N': | |
93d45d9e | 1138 | case 'U': |
f6db1481 RH |
1139 | break; |
1140 | case 'H': | |
1141 | setup_core_dumping(); | |
1142 | break; | |
f6db1481 | 1143 | case 'a': |
9e016eba JH |
1144 | enable_rtl_dump_file (); |
1145 | break; | |
1146 | ||
f6db1481 | 1147 | default: |
d4ee4d25 | 1148 | warning (0, "unrecognized gcc debugging option: %c", c); |
f6db1481 RH |
1149 | break; |
1150 | } | |
4291d9c8 RS |
1151 | } |
1152 | ||
f6db1481 RH |
1153 | /* Indexed by enum debug_info_type. */ |
1154 | const char *const debug_type_names[] = | |
4291d9c8 | 1155 | { |
8f49f0f1 | 1156 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" |
f6db1481 | 1157 | }; |
1b3d8f8a | 1158 | |
f6db1481 RH |
1159 | /* Print version information to FILE. |
1160 | Each line begins with INDENT (for the case where FILE is the | |
1161 | assembler output file). */ | |
3c030e88 | 1162 | |
f6db1481 RH |
1163 | void |
1164 | print_version (FILE *file, const char *indent) | |
f5e99456 | 1165 | { |
ab532386 | 1166 | static const char fmt1[] = |
f5e99456 | 1167 | #ifdef __GNUC__ |
2f41c1d6 | 1168 | N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") |
f5e99456 | 1169 | #else |
2f41c1d6 | 1170 | N_("%s%s%s %sversion %s (%s) compiled by CC, ") |
f5e99456 | 1171 | #endif |
ab532386 JM |
1172 | ; |
1173 | static const char fmt2[] = | |
0968bb3d KG |
1174 | N_("GMP version %s, MPFR version %s.\n"); |
1175 | static const char fmt3[] = | |
3a204175 | 1176 | N_("%s%swarning: %s header version %s differs from library version %s.\n"); |
0968bb3d | 1177 | static const char fmt4[] = |
ab532386 JM |
1178 | N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); |
1179 | #ifndef __VERSION__ | |
1180 | #define __VERSION__ "[?]" | |
1181 | #endif | |
1182 | fprintf (file, | |
1183 | file == stderr ? _(fmt1) : fmt1, | |
1184 | indent, *indent != 0 ? " " : "", | |
2f41c1d6 | 1185 | lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, |
f5e99456 | 1186 | indent, __VERSION__); |
0968bb3d KG |
1187 | |
1188 | /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
04be270f KG |
1189 | two string formats, "i.j.k" and "i.j" when k is zero. As of |
1190 | gmp-4.3.0, GMP always uses the 3 number format. */ | |
0968bb3d KG |
1191 | #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
1192 | #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X) | |
04be270f KG |
1193 | #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
1194 | #define GCC_GMP_VERSION \ | |
1195 | GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) | |
1196 | #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 | |
0968bb3d KG |
1197 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ |
1198 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) | |
1199 | #else | |
1200 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ | |
1201 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \ | |
1202 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL) | |
1203 | #endif | |
ab532386 JM |
1204 | fprintf (file, |
1205 | file == stderr ? _(fmt2) : fmt2, | |
0968bb3d KG |
1206 | GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING); |
1207 | if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) | |
1208 | fprintf (file, | |
1209 | file == stderr ? _(fmt3) : fmt3, | |
3a204175 | 1210 | indent, *indent != 0 ? " " : "", |
0968bb3d KG |
1211 | "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); |
1212 | if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
1213 | fprintf (file, | |
1214 | file == stderr ? _(fmt3) : fmt3, | |
3a204175 | 1215 | indent, *indent != 0 ? " " : "", |
0968bb3d KG |
1216 | "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); |
1217 | fprintf (file, | |
1218 | file == stderr ? _(fmt4) : fmt4, | |
7a69a172 GB |
1219 | indent, *indent != 0 ? " " : "", |
1220 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
44e9f006 RAE |
1221 | |
1222 | print_plugins_versions (file, indent); | |
f5e99456 NB |
1223 | } |
1224 | ||
e0d9d0dd NC |
1225 | #ifdef ASM_COMMENT_START |
1226 | static int | |
1227 | print_to_asm_out_file (print_switch_type type, const char * text) | |
1228 | { | |
1229 | bool prepend_sep = true; | |
1230 | ||
1231 | switch (type) | |
1232 | { | |
1233 | case SWITCH_TYPE_LINE_END: | |
1234 | putc ('\n', asm_out_file); | |
1235 | return 1; | |
1236 | ||
1237 | case SWITCH_TYPE_LINE_START: | |
1238 | fputs (ASM_COMMENT_START, asm_out_file); | |
1239 | return strlen (ASM_COMMENT_START); | |
1240 | ||
1241 | case SWITCH_TYPE_DESCRIPTIVE: | |
1242 | if (ASM_COMMENT_START[0] == 0) | |
1243 | prepend_sep = false; | |
1244 | /* Drop through. */ | |
1245 | case SWITCH_TYPE_PASSED: | |
1246 | case SWITCH_TYPE_ENABLED: | |
1247 | if (prepend_sep) | |
1248 | fputc (' ', asm_out_file); | |
1249 | fprintf (asm_out_file, text); | |
1250 | /* No need to return the length here as | |
1251 | print_single_switch has already done it. */ | |
1252 | return 0; | |
1253 | ||
1254 | default: | |
1255 | return -1; | |
1256 | } | |
1257 | } | |
1258 | #endif | |
1259 | ||
1260 | static int | |
1261 | print_to_stderr (print_switch_type type, const char * text) | |
1262 | { | |
1263 | switch (type) | |
1264 | { | |
1265 | case SWITCH_TYPE_LINE_END: | |
1266 | putc ('\n', stderr); | |
1267 | return 1; | |
1268 | ||
1269 | case SWITCH_TYPE_LINE_START: | |
1270 | return 0; | |
1271 | ||
1272 | case SWITCH_TYPE_PASSED: | |
1273 | case SWITCH_TYPE_ENABLED: | |
1274 | fputc (' ', stderr); | |
1275 | /* Drop through. */ | |
1276 | ||
1277 | case SWITCH_TYPE_DESCRIPTIVE: | |
1278 | fprintf (stderr, text); | |
1279 | /* No need to return the length here as | |
1280 | print_single_switch has already done it. */ | |
1281 | return 0; | |
1282 | ||
1283 | default: | |
1284 | return -1; | |
1285 | } | |
1286 | } | |
1287 | ||
f5e99456 | 1288 | /* Print an option value and return the adjusted position in the line. |
e0d9d0dd NC |
1289 | ??? print_fn doesn't handle errors, eg disk full; presumably other |
1290 | code will catch a disk full though. */ | |
f5e99456 NB |
1291 | |
1292 | static int | |
e0d9d0dd NC |
1293 | print_single_switch (print_switch_fn_type print_fn, |
1294 | int pos, | |
1295 | print_switch_type type, | |
1296 | const char * text) | |
f5e99456 | 1297 | { |
e0d9d0dd NC |
1298 | /* The ultrix fprintf returns 0 on success, so compute the result |
1299 | we want here since we need it for the following test. The +1 | |
2e226e66 | 1300 | is for the separator character that will probably be emitted. */ |
e0d9d0dd | 1301 | int len = strlen (text) + 1; |
f5e99456 NB |
1302 | |
1303 | if (pos != 0 | |
e0d9d0dd | 1304 | && pos + len > MAX_LINE) |
f5e99456 | 1305 | { |
e0d9d0dd | 1306 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 NB |
1307 | pos = 0; |
1308 | } | |
e0d9d0dd | 1309 | |
f5e99456 | 1310 | if (pos == 0) |
e0d9d0dd NC |
1311 | pos += print_fn (SWITCH_TYPE_LINE_START, NULL); |
1312 | ||
1313 | print_fn (type, text); | |
1314 | return pos + len; | |
f5e99456 NB |
1315 | } |
1316 | ||
e0d9d0dd | 1317 | /* Print active target switches using PRINT_FN. |
f5e99456 NB |
1318 | POS is the current cursor position and MAX is the size of a "line". |
1319 | Each line begins with INDENT and ends with TERM. | |
1320 | Each switch is separated from the next by SEP. */ | |
1321 | ||
1322 | static void | |
e0d9d0dd | 1323 | print_switch_values (print_switch_fn_type print_fn) |
f5e99456 | 1324 | { |
e0d9d0dd | 1325 | int pos = 0; |
f5e99456 | 1326 | size_t j; |
b86f6cd9 | 1327 | const char **p; |
f5e99456 | 1328 | |
a37db56b | 1329 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
c07e5477 | 1330 | that it can be printed below. This helps reproducibility. */ |
403d4851 AO |
1331 | if (!flag_random_seed) |
1332 | init_random_seed (); | |
a37db56b | 1333 | |
f5e99456 | 1334 | /* Print the options as passed. */ |
e0d9d0dd NC |
1335 | pos = print_single_switch (print_fn, pos, |
1336 | SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
f5e99456 NB |
1337 | |
1338 | for (p = &save_argv[1]; *p != NULL; p++) | |
e0d9d0dd NC |
1339 | { |
1340 | if (**p == '-') | |
1341 | { | |
1342 | /* Ignore these. */ | |
1343 | if (strcmp (*p, "-o") == 0 | |
1344 | || strcmp (*p, "-dumpbase") == 0 | |
1345 | || strcmp (*p, "-auxbase") == 0) | |
1346 | { | |
1347 | if (p[1] != NULL) | |
1348 | p++; | |
1349 | continue; | |
1350 | } | |
1351 | ||
1352 | if (strcmp (*p, "-quiet") == 0 | |
1353 | || strcmp (*p, "-version") == 0) | |
f5e99456 | 1354 | continue; |
e0d9d0dd NC |
1355 | |
1356 | if ((*p)[1] == 'd') | |
1357 | continue; | |
1358 | } | |
1359 | ||
1360 | pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
1361 | } | |
1362 | ||
f5e99456 | 1363 | if (pos > 0) |
e0d9d0dd | 1364 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 NB |
1365 | |
1366 | /* Print the -f and -m options that have been enabled. | |
1367 | We don't handle language specific options but printing argv | |
1368 | should suffice. */ | |
e0d9d0dd NC |
1369 | pos = print_single_switch (print_fn, 0, |
1370 | SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
f5e99456 | 1371 | |
50431bc4 | 1372 | for (j = 0; j < cl_options_count; j++) |
75685792 | 1373 | if ((cl_options[j].flags & CL_REPORT) |
ccf08a6e | 1374 | && option_enabled (j) > 0) |
e0d9d0dd NC |
1375 | pos = print_single_switch (print_fn, pos, |
1376 | SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
f5e99456 | 1377 | |
e0d9d0dd | 1378 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 | 1379 | } |
ddc9542b | 1380 | |
f5e99456 NB |
1381 | /* Open assembly code output file. Do this even if -fsyntax-only is |
1382 | on, because then the driver will have provided the name of a | |
1383 | temporary file or bit bucket for us. NAME is the file specified on | |
1384 | the command line, possibly NULL. */ | |
1385 | static void | |
e25a75e6 | 1386 | init_asm_output (const char *name) |
f5e99456 NB |
1387 | { |
1388 | if (name == NULL && asm_file_name == 0) | |
1389 | asm_out_file = stdout; | |
1390 | else | |
1391 | { | |
1392 | if (asm_file_name == 0) | |
9cabb1d8 KH |
1393 | { |
1394 | int len = strlen (dump_base_name); | |
a8a4fe0c | 1395 | char *dumpname = XNEWVEC (char, len + 6); |
e0d9d0dd | 1396 | |
9cabb1d8 KH |
1397 | memcpy (dumpname, dump_base_name, len + 1); |
1398 | strip_off_ending (dumpname, len); | |
1399 | strcat (dumpname, ".s"); | |
1400 | asm_file_name = dumpname; | |
1401 | } | |
f5e99456 | 1402 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 1403 | asm_out_file = stdout; |
f5e99456 | 1404 | else |
90aa6719 | 1405 | asm_out_file = fopen (asm_file_name, "w+b"); |
f5e99456 | 1406 | if (asm_out_file == 0) |
971801ff | 1407 | fatal_error ("can%'t open %s for writing: %m", asm_file_name); |
f5e99456 NB |
1408 | } |
1409 | ||
f5e99456 NB |
1410 | if (!flag_syntax_only) |
1411 | { | |
1bc7c5b6 | 1412 | targetm.asm_out.file_start (); |
f5e99456 | 1413 | |
e0d9d0dd NC |
1414 | if (flag_record_gcc_switches) |
1415 | { | |
1416 | if (targetm.asm_out.record_gcc_switches) | |
1417 | { | |
1418 | /* Let the target know that we are about to start recording. */ | |
1419 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1420 | NULL); | |
1421 | /* Now record the switches. */ | |
1422 | print_switch_values (targetm.asm_out.record_gcc_switches); | |
1423 | /* Let the target know that the recording is over. */ | |
1424 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1425 | NULL); | |
1426 | } | |
1427 | else | |
1f5b3869 | 1428 | inform (input_location, "-frecord-gcc-switches is not supported by the current target"); |
e0d9d0dd NC |
1429 | } |
1430 | ||
f5e99456 NB |
1431 | #ifdef ASM_COMMENT_START |
1432 | if (flag_verbose_asm) | |
1433 | { | |
e0d9d0dd NC |
1434 | /* Print the list of switches in effect |
1435 | into the assembler file as comments. */ | |
f5e99456 | 1436 | print_version (asm_out_file, ASM_COMMENT_START); |
e0d9d0dd | 1437 | print_switch_values (print_to_asm_out_file); |
f5e99456 NB |
1438 | fprintf (asm_out_file, "\n"); |
1439 | } | |
1440 | #endif | |
1441 | } | |
1442 | } | |
ddc9542b | 1443 | |
5c60a017 RS |
1444 | /* Return true if the state of option OPTION should be stored in PCH files |
1445 | and checked by default_pch_valid_p. Store the option's current state | |
1446 | in STATE if so. */ | |
1447 | ||
1448 | static inline bool | |
1449 | option_affects_pch_p (int option, struct cl_option_state *state) | |
1450 | { | |
1451 | if ((cl_options[option].flags & CL_TARGET) == 0) | |
1452 | return false; | |
1453 | if (cl_options[option].flag_var == &target_flags) | |
1454 | if (targetm.check_pch_target_flags) | |
1455 | return false; | |
1456 | return get_option_state (option, state); | |
1457 | } | |
1458 | ||
7bb1ad93 GK |
1459 | /* Default version of get_pch_validity. |
1460 | By default, every flag difference is fatal; that will be mostly right for | |
1461 | most targets, but completely right for very few. */ | |
1462 | ||
1463 | void * | |
1464 | default_get_pch_validity (size_t *len) | |
1465 | { | |
5c60a017 | 1466 | struct cl_option_state state; |
7bb1ad93 GK |
1467 | size_t i; |
1468 | char *result, *r; | |
fbfb16e2 | 1469 | |
bacf5b96 RS |
1470 | *len = 2; |
1471 | if (targetm.check_pch_target_flags) | |
1472 | *len += sizeof (target_flags); | |
5c60a017 RS |
1473 | for (i = 0; i < cl_options_count; i++) |
1474 | if (option_affects_pch_p (i, &state)) | |
1475 | *len += state.size; | |
7bb1ad93 | 1476 | |
a8a4fe0c | 1477 | result = r = XNEWVEC (char, *len); |
7bb1ad93 GK |
1478 | r[0] = flag_pic; |
1479 | r[1] = flag_pie; | |
1480 | r += 2; | |
bacf5b96 | 1481 | if (targetm.check_pch_target_flags) |
7bb1ad93 | 1482 | { |
bacf5b96 RS |
1483 | memcpy (r, &target_flags, sizeof (target_flags)); |
1484 | r += sizeof (target_flags); | |
7bb1ad93 | 1485 | } |
bacf5b96 | 1486 | |
5c60a017 RS |
1487 | for (i = 0; i < cl_options_count; i++) |
1488 | if (option_affects_pch_p (i, &state)) | |
1489 | { | |
1490 | memcpy (r, state.data, state.size); | |
1491 | r += state.size; | |
1492 | } | |
7bb1ad93 GK |
1493 | |
1494 | return result; | |
1495 | } | |
1496 | ||
bacf5b96 RS |
1497 | /* Return a message which says that a PCH file was created with a different |
1498 | setting of OPTION. */ | |
1499 | ||
1500 | static const char * | |
1501 | pch_option_mismatch (const char *option) | |
1502 | { | |
1503 | char *r; | |
1504 | ||
1505 | asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
1506 | if (r == NULL) | |
1507 | return _("out of memory"); | |
1508 | return r; | |
1509 | } | |
1510 | ||
7bb1ad93 GK |
1511 | /* Default version of pch_valid_p. */ |
1512 | ||
1513 | const char * | |
1514 | default_pch_valid_p (const void *data_p, size_t len) | |
1515 | { | |
5c60a017 | 1516 | struct cl_option_state state; |
7bb1ad93 | 1517 | const char *data = (const char *)data_p; |
7bb1ad93 | 1518 | size_t i; |
fbfb16e2 | 1519 | |
7bb1ad93 GK |
1520 | /* -fpic and -fpie also usually make a PCH invalid. */ |
1521 | if (data[0] != flag_pic) | |
1522 | return _("created and used with different settings of -fpic"); | |
1523 | if (data[1] != flag_pie) | |
1524 | return _("created and used with different settings of -fpie"); | |
1525 | data += 2; | |
1526 | ||
1527 | /* Check target_flags. */ | |
8d932be3 RS |
1528 | if (targetm.check_pch_target_flags) |
1529 | { | |
bacf5b96 RS |
1530 | int tf; |
1531 | const char *r; | |
1532 | ||
1533 | memcpy (&tf, data, sizeof (target_flags)); | |
1534 | data += sizeof (target_flags); | |
1535 | len -= sizeof (target_flags); | |
1536 | r = targetm.check_pch_target_flags (tf); | |
8d932be3 RS |
1537 | if (r != NULL) |
1538 | return r; | |
1539 | } | |
7bb1ad93 | 1540 | |
5c60a017 RS |
1541 | for (i = 0; i < cl_options_count; i++) |
1542 | if (option_affects_pch_p (i, &state)) | |
1543 | { | |
1544 | if (memcmp (data, state.data, state.size) != 0) | |
bacf5b96 | 1545 | return pch_option_mismatch (cl_options[i].opt_text); |
5c60a017 RS |
1546 | data += state.size; |
1547 | len -= state.size; | |
1548 | } | |
1549 | ||
7bb1ad93 | 1550 | return NULL; |
7bb1ad93 GK |
1551 | } |
1552 | ||
b6fe0bb8 GDR |
1553 | /* Default tree printer. Handles declarations only. */ |
1554 | static bool | |
39ce81c9 | 1555 | default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, |
dee15844 | 1556 | int precision, bool wide, bool set_locus, bool hash) |
b6fe0bb8 | 1557 | { |
dad2a933 RH |
1558 | tree t; |
1559 | ||
39ce81c9 | 1560 | /* FUTURE: %+x should set the locus. */ |
dee15844 | 1561 | if (precision != 0 || wide || hash) |
39ce81c9 ZW |
1562 | return false; |
1563 | ||
1564 | switch (*spec) | |
b6fe0bb8 | 1565 | { |
4e53d196 SB |
1566 | case 'E': |
1567 | t = va_arg (*text->args_ptr, tree); | |
1568 | if (TREE_CODE (t) == IDENTIFIER_NODE) | |
1569 | { | |
4f1e4960 | 1570 | pp_identifier (pp, IDENTIFIER_POINTER (t)); |
4e53d196 SB |
1571 | return true; |
1572 | } | |
1573 | break; | |
1574 | ||
b6fe0bb8 | 1575 | case 'D': |
dad2a933 | 1576 | t = va_arg (*text->args_ptr, tree); |
f991abd1 | 1577 | if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) |
dad2a933 RH |
1578 | t = DECL_DEBUG_EXPR (t); |
1579 | break; | |
1580 | ||
b6fe0bb8 GDR |
1581 | case 'F': |
1582 | case 'T': | |
dad2a933 RH |
1583 | t = va_arg (*text->args_ptr, tree); |
1584 | break; | |
b6fe0bb8 GDR |
1585 | |
1586 | default: | |
1587 | return false; | |
1588 | } | |
dad2a933 | 1589 | |
dee15844 JM |
1590 | if (set_locus && text->locus) |
1591 | *text->locus = DECL_SOURCE_LOCATION (t); | |
1592 | ||
dad2a933 RH |
1593 | if (DECL_P (t)) |
1594 | { | |
1595 | const char *n = DECL_NAME (t) | |
4f1e4960 JM |
1596 | ? identifier_to_locale (lang_hooks.decl_printable_name (t, 2)) |
1597 | : _("<anonymous>"); | |
dad2a933 RH |
1598 | pp_string (pp, n); |
1599 | } | |
1600 | else | |
438d798f | 1601 | dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0); |
dad2a933 RH |
1602 | |
1603 | return true; | |
b6fe0bb8 GDR |
1604 | } |
1605 | ||
5ffeb913 TT |
1606 | /* A helper function; used as the reallocator function for cpp's line |
1607 | table. */ | |
1608 | static void * | |
1609 | realloc_for_line_map (void *ptr, size_t len) | |
1610 | { | |
1611 | return ggc_realloc (ptr, len); | |
1612 | } | |
1613 | ||
f5e99456 NB |
1614 | /* Initialization of the front end environment, before command line |
1615 | options are parsed. Signal handlers, internationalization etc. | |
1616 | ARGV0 is main's argv[0]. */ | |
1617 | static void | |
b86f6cd9 | 1618 | general_init (const char *argv0) |
f5e99456 | 1619 | { |
b86f6cd9 | 1620 | const char *p; |
f5e99456 NB |
1621 | |
1622 | p = argv0 + strlen (argv0); | |
1623 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
1624 | --p; | |
1625 | progname = p; | |
1626 | ||
1627 | xmalloc_set_program_name (progname); | |
e1a132c6 | 1628 | |
5351f1ca NB |
1629 | hex_init (); |
1630 | ||
98a3dad4 | 1631 | /* Unlock the stdio streams. */ |
2653bb0c | 1632 | unlock_std_streams (); |
98a3dad4 | 1633 | |
191bf464 | 1634 | gcc_init_libintl (); |
ab87f8c8 | 1635 | |
b6fe0bb8 GDR |
1636 | /* Initialize the diagnostics reporting machinery, so option parsing |
1637 | can give warnings and errors. */ | |
1638 | diagnostic_initialize (global_dc); | |
1639 | /* Set a default printer. Language specific initializations will | |
1640 | override it later. */ | |
1641 | pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
1642 | ||
a7023245 ZW |
1643 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
1644 | #ifdef SIGSEGV | |
1645 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 1646 | #endif |
a7023245 ZW |
1647 | #ifdef SIGILL |
1648 | signal (SIGILL, crash_signal); | |
1649 | #endif | |
1650 | #ifdef SIGBUS | |
1651 | signal (SIGBUS, crash_signal); | |
1652 | #endif | |
1653 | #ifdef SIGABRT | |
1654 | signal (SIGABRT, crash_signal); | |
1655 | #endif | |
1656 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
1657 | signal (SIGIOT, crash_signal); | |
1658 | #endif | |
15e5ad76 ZW |
1659 | #ifdef SIGFPE |
1660 | signal (SIGFPE, crash_signal); | |
1661 | #endif | |
854a97f0 | 1662 | |
476d9098 GK |
1663 | /* Other host-specific signal setup. */ |
1664 | (*host_hooks.extra_signals)(); | |
1665 | ||
c79043f3 NB |
1666 | /* Initialize the garbage-collector, string pools and tree type hash |
1667 | table. */ | |
1668 | init_ggc (); | |
1669 | init_stringpool (); | |
5ffeb913 TT |
1670 | line_table = GGC_NEW (struct line_maps); |
1671 | linemap_init (line_table); | |
1672 | line_table->reallocator = realloc_for_line_map; | |
c79043f3 | 1673 | init_ttree (); |
6a08f7b3 | 1674 | |
f5e99456 NB |
1675 | /* Initialize register usage now so switches may override. */ |
1676 | init_reg_sets (); | |
764dbbf2 | 1677 | |
c6d9a88c MM |
1678 | /* Register the language-independent parameters. */ |
1679 | add_params (lang_independent_params, LAST_PARAM); | |
1680 | ||
9ac121af KG |
1681 | /* This must be done after add_params but before argument processing. */ |
1682 | init_ggc_heuristics(); | |
ef330312 | 1683 | init_optimization_passes (); |
9fe0cb7d | 1684 | statistics_early_init (); |
a32274ad | 1685 | } |
ddc9542b | 1686 | |
aacd3885 RS |
1687 | /* Return true if the current target supports -fsection-anchors. */ |
1688 | ||
1689 | static bool | |
1690 | target_supports_section_anchors_p (void) | |
1691 | { | |
1692 | if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
1693 | return false; | |
1694 | ||
1695 | if (targetm.asm_out.output_anchor == NULL) | |
1696 | return false; | |
1697 | ||
1698 | return true; | |
1699 | } | |
1700 | ||
b5deb7b6 SL |
1701 | /* Default the align_* variables to 1 if they're still unset, and |
1702 | set up the align_*_log variables. */ | |
1703 | static void | |
1704 | init_alignments (void) | |
1705 | { | |
1706 | if (align_loops <= 0) | |
1707 | align_loops = 1; | |
1708 | if (align_loops_max_skip > align_loops) | |
1709 | align_loops_max_skip = align_loops - 1; | |
1710 | align_loops_log = floor_log2 (align_loops * 2 - 1); | |
1711 | if (align_jumps <= 0) | |
1712 | align_jumps = 1; | |
1713 | if (align_jumps_max_skip > align_jumps) | |
1714 | align_jumps_max_skip = align_jumps - 1; | |
1715 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); | |
1716 | if (align_labels <= 0) | |
1717 | align_labels = 1; | |
1718 | align_labels_log = floor_log2 (align_labels * 2 - 1); | |
1719 | if (align_labels_max_skip > align_labels) | |
1720 | align_labels_max_skip = align_labels - 1; | |
1721 | if (align_functions <= 0) | |
1722 | align_functions = 1; | |
1723 | align_functions_log = floor_log2 (align_functions * 2 - 1); | |
1724 | } | |
1725 | ||
a32274ad NB |
1726 | /* Process the options that have been parsed. */ |
1727 | static void | |
e25a75e6 | 1728 | process_options (void) |
a32274ad | 1729 | { |
456b8ce5 UB |
1730 | /* Just in case lang_hooks.post_options ends up calling a debug_hook. |
1731 | This can happen with incorrect pre-processed input. */ | |
1732 | debug_hooks = &do_nothing_debug_hooks; | |
1733 | ||
e73f7547 MLI |
1734 | /* This replaces set_Wunused. */ |
1735 | if (warn_unused_function == -1) | |
1736 | warn_unused_function = warn_unused; | |
1737 | if (warn_unused_label == -1) | |
1738 | warn_unused_label = warn_unused; | |
1739 | /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */ | |
1740 | if (warn_unused_parameter == -1) | |
1741 | warn_unused_parameter = (warn_unused && extra_warnings); | |
1742 | if (warn_unused_variable == -1) | |
1743 | warn_unused_variable = warn_unused; | |
1744 | if (warn_unused_value == -1) | |
1745 | warn_unused_value = warn_unused; | |
1746 | ||
62a67c94 MLI |
1747 | /* This replaces set_Wextra. */ |
1748 | if (warn_uninitialized == -1) | |
1749 | warn_uninitialized = extra_warnings; | |
1750 | ||
4bfec483 NB |
1751 | /* Allow the front end to perform consistency checks and do further |
1752 | initialization based on the command line options. This hook also | |
1753 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
1754 | so we can correctly initialize debug output. */ | |
ae2bcd98 | 1755 | no_backend = lang_hooks.post_options (&main_input_filename); |
4bfec483 | 1756 | |
4291d9c8 RS |
1757 | #ifdef OVERRIDE_OPTIONS |
1758 | /* Some machines may reject certain combinations of options. */ | |
1759 | OVERRIDE_OPTIONS; | |
1760 | #endif | |
1761 | ||
aacd3885 RS |
1762 | if (flag_section_anchors && !target_supports_section_anchors_p ()) |
1763 | { | |
1764 | warning (OPT_fsection_anchors, | |
1765 | "this target does not support %qs", "-fsection-anchors"); | |
1766 | flag_section_anchors = 0; | |
1767 | } | |
1768 | ||
32770746 PB |
1769 | if (flag_short_enums == 2) |
1770 | flag_short_enums = targetm.default_short_enums (); | |
1771 | ||
b1cbe78c NB |
1772 | /* Set aux_base_name if not already set. */ |
1773 | if (aux_base_name) | |
1774 | ; | |
d7b42618 | 1775 | else if (main_input_filename) |
b1cbe78c | 1776 | { |
d7b42618 | 1777 | char *name = xstrdup (lbasename (main_input_filename)); |
e25a75e6 | 1778 | |
b1cbe78c NB |
1779 | strip_off_ending (name, strlen (name)); |
1780 | aux_base_name = name; | |
1781 | } | |
1782 | else | |
1783 | aux_base_name = "gccaux"; | |
1784 | ||
b70e9775 SP |
1785 | #ifndef HAVE_cloog |
1786 | if (flag_graphite | |
1787 | || flag_loop_block | |
1788 | || flag_loop_interchange | |
20ed8b32 TG |
1789 | || flag_loop_strip_mine |
1790 | || flag_graphite_identity) | |
b70e9775 SP |
1791 | sorry ("Graphite loop optimizations cannot be used"); |
1792 | #endif | |
1793 | ||
4291d9c8 RS |
1794 | /* Unrolling all loops implies that standard loop unrolling must also |
1795 | be done. */ | |
1796 | if (flag_unroll_all_loops) | |
1797 | flag_unroll_loops = 1; | |
b17d5d7c | 1798 | |
7869fe47 | 1799 | /* The loop unrolling code assumes that cse will be run after loop. |
2928d0f8 SE |
1800 | web and rename-registers also help when run after loop unrolling. */ |
1801 | ||
1802 | if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
1803 | flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
1804 | if (flag_web == AUTODETECT_VALUE) | |
1805 | flag_web = flag_unroll_loops || flag_peel_loops; | |
1806 | if (flag_rename_registers == AUTODETECT_VALUE) | |
1807 | flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
4291d9c8 | 1808 | |
b932f770 JH |
1809 | if (flag_non_call_exceptions) |
1810 | flag_asynchronous_unwind_tables = 1; | |
1811 | if (flag_asynchronous_unwind_tables) | |
1812 | flag_unwind_tables = 1; | |
1813 | ||
fca9dc00 ZD |
1814 | if (flag_value_profile_transformations) |
1815 | flag_profile_values = 1; | |
1816 | ||
4291d9c8 RS |
1817 | /* Warn about options that are not supported on this machine. */ |
1818 | #ifndef INSN_SCHEDULING | |
1819 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
d4ee4d25 | 1820 | warning (0, "instruction scheduling not supported on this target machine"); |
4291d9c8 RS |
1821 | #endif |
1822 | #ifndef DELAY_SLOTS | |
1823 | if (flag_delayed_branch) | |
d4ee4d25 | 1824 | warning (0, "this target machine does not have delayed branches"); |
4291d9c8 RS |
1825 | #endif |
1826 | ||
19283265 RH |
1827 | user_label_prefix = USER_LABEL_PREFIX; |
1828 | if (flag_leading_underscore != -1) | |
1829 | { | |
854a97f0 | 1830 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
1831 | issue a warning and ignore this option. */ |
1832 | if (user_label_prefix[0] == 0 || | |
1833 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
1834 | { | |
1835 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
1836 | } | |
1837 | else | |
d4ee4d25 | 1838 | warning (0, "-f%sleading-underscore not supported on this target machine", |
19283265 RH |
1839 | flag_leading_underscore ? "" : "no-"); |
1840 | } | |
1841 | ||
4291d9c8 RS |
1842 | /* If we are in verbose mode, write out the version and maybe all the |
1843 | option flags in use. */ | |
1844 | if (version_flag) | |
1845 | { | |
3d5cdd42 | 1846 | print_version (stderr, ""); |
4291d9c8 | 1847 | if (! quiet_flag) |
e0d9d0dd | 1848 | print_switch_values (print_to_stderr); |
4291d9c8 RS |
1849 | } |
1850 | ||
f5e99456 NB |
1851 | if (flag_syntax_only) |
1852 | { | |
1853 | write_symbols = NO_DEBUG; | |
1854 | profile_flag = 0; | |
f5e99456 | 1855 | } |
4291d9c8 | 1856 | |
df38ffef NB |
1857 | /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
1858 | level is 0. */ | |
1859 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1860 | write_symbols = NO_DEBUG; | |
1861 | ||
f5e99456 NB |
1862 | /* Now we know write_symbols, set up the debug hooks based on it. |
1863 | By default we do nothing for debug output. */ | |
38d396e5 PB |
1864 | if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) |
1865 | default_debug_hooks = &do_nothing_debug_hooks; | |
1866 | #if defined(DBX_DEBUGGING_INFO) | |
1867 | else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
1868 | default_debug_hooks = &dbx_debug_hooks; | |
1869 | #endif | |
1870 | #if defined(XCOFF_DEBUGGING_INFO) | |
1871 | else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
1872 | default_debug_hooks = &xcoff_debug_hooks; | |
1873 | #endif | |
1874 | #ifdef SDB_DEBUGGING_INFO | |
1875 | else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
1876 | default_debug_hooks = &sdb_debug_hooks; | |
1877 | #endif | |
1878 | #ifdef DWARF2_DEBUGGING_INFO | |
1879 | else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
1880 | default_debug_hooks = &dwarf2_debug_hooks; | |
1881 | #endif | |
1882 | #ifdef VMS_DEBUGGING_INFO | |
1883 | else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
1884 | || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
1885 | default_debug_hooks = &vmsdbg_debug_hooks; | |
1886 | #endif | |
1887 | ||
df38ffef | 1888 | if (write_symbols == NO_DEBUG) |
93415288 | 1889 | ; |
f5e99456 | 1890 | #if defined(DBX_DEBUGGING_INFO) |
df38ffef | 1891 | else if (write_symbols == DBX_DEBUG) |
f5e99456 | 1892 | debug_hooks = &dbx_debug_hooks; |
4291d9c8 | 1893 | #endif |
f5e99456 | 1894 | #if defined(XCOFF_DEBUGGING_INFO) |
df38ffef | 1895 | else if (write_symbols == XCOFF_DEBUG) |
f5e99456 | 1896 | debug_hooks = &xcoff_debug_hooks; |
3d5cdd42 | 1897 | #endif |
f5e99456 | 1898 | #ifdef SDB_DEBUGGING_INFO |
df38ffef | 1899 | else if (write_symbols == SDB_DEBUG) |
f5e99456 NB |
1900 | debug_hooks = &sdb_debug_hooks; |
1901 | #endif | |
f5e99456 | 1902 | #ifdef DWARF2_DEBUGGING_INFO |
df38ffef | 1903 | else if (write_symbols == DWARF2_DEBUG) |
f5e99456 | 1904 | debug_hooks = &dwarf2_debug_hooks; |
3d5cdd42 | 1905 | #endif |
7a0c8d71 | 1906 | #ifdef VMS_DEBUGGING_INFO |
df38ffef | 1907 | else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
7a0c8d71 DR |
1908 | debug_hooks = &vmsdbg_debug_hooks; |
1909 | #endif | |
df38ffef NB |
1910 | else |
1911 | error ("target system does not support the \"%s\" debug format", | |
1912 | debug_type_names[write_symbols]); | |
4291d9c8 | 1913 | |
014a1138 | 1914 | /* Now we know which debug output will be used so we can set |
21ef99b8 | 1915 | flag_var_tracking, flag_rename_registers if the user has |
38d396e5 PB |
1916 | not specified them. */ |
1917 | if (debug_info_level < DINFO_LEVEL_NORMAL | |
1918 | || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
014a1138 | 1919 | { |
62760ffd CT |
1920 | if (flag_var_tracking == 1 |
1921 | || flag_var_tracking_uninit == 1) | |
38d396e5 PB |
1922 | { |
1923 | if (debug_info_level < DINFO_LEVEL_NORMAL) | |
d4ee4d25 | 1924 | warning (0, "variable tracking requested, but useless unless " |
38d396e5 PB |
1925 | "producing debug info"); |
1926 | else | |
d4ee4d25 | 1927 | warning (0, "variable tracking requested, but not supported " |
38d396e5 PB |
1928 | "by this debug format"); |
1929 | } | |
1930 | flag_var_tracking = 0; | |
62760ffd | 1931 | flag_var_tracking_uninit = 0; |
014a1138 JZ |
1932 | } |
1933 | ||
2928d0f8 | 1934 | if (flag_rename_registers == AUTODETECT_VALUE) |
38d396e5 PB |
1935 | flag_rename_registers = default_debug_hooks->var_location |
1936 | != do_nothing_debug_hooks.var_location; | |
1937 | ||
2928d0f8 | 1938 | if (flag_var_tracking == AUTODETECT_VALUE) |
38d396e5 PB |
1939 | flag_var_tracking = optimize >= 1; |
1940 | ||
a5828d1e MM |
1941 | if (flag_tree_cselim == AUTODETECT_VALUE) |
1942 | #ifdef HAVE_conditional_move | |
1943 | flag_tree_cselim = 1; | |
1944 | #else | |
1945 | flag_tree_cselim = 0; | |
1946 | #endif | |
1947 | ||
62760ffd CT |
1948 | /* If the user specifically requested variable tracking with tagging |
1949 | uninitialized variables, we need to turn on variable tracking. | |
1950 | (We already determined above that variable tracking is feasible.) */ | |
1951 | if (flag_var_tracking_uninit) | |
1952 | flag_var_tracking = 1; | |
1953 | ||
f5e99456 NB |
1954 | /* If auxiliary info generation is desired, open the output file. |
1955 | This goes in the same directory as the source file--unlike | |
1956 | all the other output files. */ | |
1957 | if (flag_gen_aux_info) | |
1958 | { | |
1959 | aux_info_file = fopen (aux_info_file_name, "w"); | |
1960 | if (aux_info_file == 0) | |
971801ff | 1961 | fatal_error ("can%'t open %s: %m", aux_info_file_name); |
f5e99456 | 1962 | } |
309a8875 | 1963 | |
f5e99456 | 1964 | if (! targetm.have_named_sections) |
4291d9c8 | 1965 | { |
f5e99456 NB |
1966 | if (flag_function_sections) |
1967 | { | |
d4ee4d25 | 1968 | warning (0, "-ffunction-sections not supported for this target"); |
f5e99456 NB |
1969 | flag_function_sections = 0; |
1970 | } | |
1971 | if (flag_data_sections) | |
1972 | { | |
d4ee4d25 | 1973 | warning (0, "-fdata-sections not supported for this target"); |
f5e99456 NB |
1974 | flag_data_sections = 0; |
1975 | } | |
4291d9c8 | 1976 | } |
f5e99456 | 1977 | |
8456b95a | 1978 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 1979 | { |
d4ee4d25 | 1980 | warning (0, "-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 1981 | flag_function_sections = 0; |
3d5cdd42 | 1982 | } |
f5e99456 | 1983 | |
0dd0e980 JH |
1984 | #ifndef HAVE_prefetch |
1985 | if (flag_prefetch_loop_arrays) | |
1986 | { | |
d4ee4d25 | 1987 | warning (0, "-fprefetch-loop-arrays not supported for this target"); |
0dd0e980 JH |
1988 | flag_prefetch_loop_arrays = 0; |
1989 | } | |
1990 | #else | |
1991 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
1992 | { | |
d4ee4d25 | 1993 | warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); |
0dd0e980 JH |
1994 | flag_prefetch_loop_arrays = 0; |
1995 | } | |
1996 | #endif | |
1997 | ||
1398974c JJ |
1998 | /* This combination of options isn't handled for i386 targets and doesn't |
1999 | make much sense anyway, so don't allow it. */ | |
2000 | if (flag_prefetch_loop_arrays && optimize_size) | |
2001 | { | |
d4ee4d25 | 2002 | warning (0, "-fprefetch-loop-arrays is not supported with -Os"); |
1398974c JJ |
2003 | flag_prefetch_loop_arrays = 0; |
2004 | } | |
2005 | ||
6de9cd9a DN |
2006 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ |
2007 | if (flag_signaling_nans) | |
2008 | flag_trapping_math = 1; | |
c7463669 | 2009 | |
c5edab65 EB |
2010 |