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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, |
67165eb3 | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | ||
b5b8b0ac AO |
322 | /* Positive if we should track variables, negative if we should run |
323 | the var-tracking pass only to discard debug annotations, zero if | |
324 | we're not to run it. When flag_var_tracking == AUTODETECT_VALUE it | |
325 | will be set according to optimize, debug_info_level and debug_hooks | |
326 | in process_options (). */ | |
2928d0f8 | 327 | int flag_var_tracking = AUTODETECT_VALUE; |
014a1138 | 328 | |
b5b8b0ac AO |
329 | /* Positive if we should track variables at assignments, negative if |
330 | we should run the var-tracking pass only to discard debug | |
331 | annotations. When flag_var_tracking_assignments == | |
332 | AUTODETECT_VALUE it will be set according to flag_var_tracking. */ | |
333 | int flag_var_tracking_assignments = AUTODETECT_VALUE; | |
334 | ||
335 | /* Nonzero if we should toggle flag_var_tracking_assignments after | |
336 | processing options and computing its default. */ | |
337 | int flag_var_tracking_assignments_toggle = 0; | |
338 | ||
b38f3813 EB |
339 | /* Type of stack check. */ |
340 | enum stack_check_type flag_stack_check = NO_STACK_CHECK; | |
341 | ||
9fb32434 CT |
342 | /* True if the user has tagged the function with the 'section' |
343 | attribute. */ | |
344 | ||
345 | bool user_defined_section_attribute = false; | |
346 | ||
854a97f0 KH |
347 | /* Values of the -falign-* flags: how much to align labels in code. |
348 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
349 | For each variable, there is an _log variant which is the power |
350 | of two not less than the variable, for .align output. */ | |
351 | ||
efa3896a | 352 | int align_loops_log; |
2cca7283 | 353 | int align_loops_max_skip; |
efa3896a | 354 | int align_jumps_log; |
2cca7283 | 355 | int align_jumps_max_skip; |
efa3896a | 356 | int align_labels_log; |
2cca7283 | 357 | int align_labels_max_skip; |
efa3896a GK |
358 | int align_functions_log; |
359 | ||
b8468bc7 NC |
360 | typedef struct |
361 | { | |
c083a819 KG |
362 | const char *const string; |
363 | int *const variable; | |
364 | const int on_value; | |
b8468bc7 NC |
365 | } |
366 | lang_independent_options; | |
367 | ||
c67e6e14 RS |
368 | /* Nonzero if subexpressions must be evaluated from left-to-right. */ |
369 | int flag_evaluation_order = 0; | |
370 | ||
19283265 | 371 | /* The user symbol prefix after having resolved same. */ |
87e11268 | 372 | const char *user_label_prefix; |
19283265 | 373 | |
c6d9a88c | 374 | static const param_info lang_independent_params[] = { |
e06c0feb | 375 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ |
47eb5b32 | 376 | { OPTION, DEFAULT, false, MIN, MAX, HELP }, |
c6d9a88c MM |
377 | #include "params.def" |
378 | #undef DEFPARAM | |
47eb5b32 | 379 | { NULL, 0, false, 0, 0, NULL } |
c6d9a88c MM |
380 | }; |
381 | ||
4291d9c8 RS |
382 | /* Output files for assembler code (real compiler output) |
383 | and debugging dumps. */ | |
384 | ||
385 | FILE *asm_out_file; | |
386 | FILE *aux_info_file; | |
c263766c | 387 | FILE *dump_file = NULL; |
29c431a1 | 388 | const char *dump_file_name; |
4291d9c8 | 389 | |
b20d9f0c AO |
390 | /* The current working directory of a translation. It's generally the |
391 | directory from which compilation was initiated, but a preprocessed | |
392 | file may specify the original directory in which it was | |
393 | created. */ | |
394 | ||
395 | static const char *src_pwd; | |
396 | ||
397 | /* Initialize src_pwd with the given string, and return true. If it | |
398 | was already initialized, return false. As a special case, it may | |
399 | be called with a NULL argument to test whether src_pwd has NOT been | |
400 | initialized yet. */ | |
401 | ||
402 | bool | |
403 | set_src_pwd (const char *pwd) | |
404 | { | |
405 | if (src_pwd) | |
0855eab7 CT |
406 | { |
407 | if (strcmp (src_pwd, pwd) == 0) | |
408 | return true; | |
409 | else | |
410 | return false; | |
411 | } | |
b20d9f0c AO |
412 | |
413 | src_pwd = xstrdup (pwd); | |
414 | return true; | |
415 | } | |
416 | ||
417 | /* Return the directory from which the translation unit was initiated, | |
418 | in case set_src_pwd() was not called before to assign it a | |
419 | different value. */ | |
420 | ||
421 | const char * | |
422 | get_src_pwd (void) | |
423 | { | |
424 | if (! src_pwd) | |
5f0c48ed GK |
425 | { |
426 | src_pwd = getpwd (); | |
427 | if (!src_pwd) | |
428 | src_pwd = "."; | |
429 | } | |
b20d9f0c AO |
430 | |
431 | return src_pwd; | |
432 | } | |
433 | ||
0761f342 GDR |
434 | /* Called when the start of a function definition is parsed, |
435 | this function prints on stderr the name of the function. */ | |
436 | void | |
437 | announce_function (tree decl) | |
438 | { | |
439 | if (!quiet_flag) | |
440 | { | |
441 | if (rtl_dump_and_exit) | |
4f1e4960 JM |
442 | fprintf (stderr, "%s ", |
443 | identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
0761f342 | 444 | else |
4f1e4960 JM |
445 | fprintf (stderr, " %s", |
446 | identifier_to_locale (lang_hooks.decl_printable_name (decl, 2))); | |
0761f342 GDR |
447 | fflush (stderr); |
448 | pp_needs_newline (global_dc->printer) = true; | |
c94ed7a1 | 449 | diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); |
0761f342 GDR |
450 | } |
451 | } | |
452 | ||
403d4851 AO |
453 | /* Initialize local_tick with the time of day, or -1 if |
454 | flag_random_seed is set. */ | |
c07e5477 NS |
455 | |
456 | static void | |
403d4851 | 457 | init_local_tick (void) |
c07e5477 NS |
458 | { |
459 | if (!flag_random_seed) | |
460 | { | |
c07e5477 NS |
461 | /* Get some more or less random data. */ |
462 | #ifdef HAVE_GETTIMEOFDAY | |
463 | { | |
403d4851 | 464 | struct timeval tv; |
fbfb16e2 | 465 | |
403d4851 | 466 | gettimeofday (&tv, NULL); |
c07e5477 NS |
467 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
468 | } | |
469 | #else | |
470 | { | |
c163ddca | 471 | time_t now = time (NULL); |
c07e5477 NS |
472 | |
473 | if (now != (time_t)-1) | |
474 | local_tick = (unsigned) now; | |
475 | } | |
476 | #endif | |
c07e5477 | 477 | } |
403d4851 | 478 | else |
c07e5477 NS |
479 | local_tick = -1; |
480 | } | |
481 | ||
403d4851 AO |
482 | /* Set up a default flag_random_seed and local_tick, unless the user |
483 | already specified one. Must be called after init_local_tick. */ | |
484 | ||
485 | static void | |
486 | init_random_seed (void) | |
487 | { | |
488 | unsigned HOST_WIDE_INT value; | |
489 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
490 | ||
491 | value = local_tick ^ getpid (); | |
492 | ||
493 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
494 | flag_random_seed = random_seed; | |
495 | } | |
496 | ||
497 | /* Obtain the random_seed string. Unless NOINIT, initialize it if | |
498 | it's not provided in the command line. */ | |
499 | ||
500 | const char * | |
501 | get_random_seed (bool noinit) | |
502 | { | |
503 | if (!flag_random_seed && !noinit) | |
504 | init_random_seed (); | |
505 | return flag_random_seed; | |
506 | } | |
507 | ||
508 | /* Modify the random_seed string to VAL. Return its previous | |
509 | value. */ | |
510 | ||
511 | const char * | |
512 | set_random_seed (const char *val) | |
513 | { | |
514 | const char *old = flag_random_seed; | |
515 | flag_random_seed = val; | |
516 | return old; | |
517 | } | |
c07e5477 | 518 | |
132e01b1 TP |
519 | /* Decode the string P as an integral parameter. |
520 | If the string is indeed an integer return its numeric value else | |
192babfd | 521 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
522 | If PNAME is zero just return DEFVAL, do not call error. */ |
523 | ||
132e01b1 | 524 | int |
e25a75e6 | 525 | read_integral_parameter (const char *p, const char *pname, const int defval) |
132e01b1 | 526 | { |
192babfd | 527 | const char *endp = p; |
132e01b1 TP |
528 | |
529 | while (*endp) | |
530 | { | |
0df6c2c7 | 531 | if (ISDIGIT (*endp)) |
132e01b1 TP |
532 | endp++; |
533 | else | |
192babfd TP |
534 | break; |
535 | } | |
536 | ||
537 | if (*endp != 0) | |
538 | { | |
539 | if (pname != 0) | |
971801ff | 540 | error ("invalid option argument %qs", pname); |
192babfd | 541 | return defval; |
132e01b1 TP |
542 | } |
543 | ||
544 | return atoi (p); | |
545 | } | |
4291d9c8 | 546 | |
9c727c9a | 547 | #if GCC_VERSION < 3004 |
a8a4fe0c | 548 | |
9c727c9a ILT |
549 | /* The functions floor_log2 and exact_log2 are defined as inline |
550 | functions in toplev.h if GCC_VERSION >= 3004. The definitions here | |
551 | are used for older versions of gcc. */ | |
a8a4fe0c | 552 | |
73d10efa | 553 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
765d98c7 | 554 | If X is 0, return -1. */ |
4291d9c8 RS |
555 | |
556 | int | |
765d98c7 | 557 | floor_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 558 | { |
765d98c7 RH |
559 | int t = 0; |
560 | ||
73d10efa | 561 | if (x == 0) |
4291d9c8 | 562 | return -1; |
765d98c7 | 563 | |
765d98c7 | 564 | if (HOST_BITS_PER_WIDE_INT > 64) |
144cbad0 | 565 | if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) |
73d10efa | 566 | t += 64; |
765d98c7 | 567 | if (HOST_BITS_PER_WIDE_INT > 32) |
144cbad0 | 568 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) |
73d10efa | 569 | t += 32; |
144cbad0 | 570 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) |
73d10efa | 571 | t += 16; |
144cbad0 | 572 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) |
73d10efa | 573 | t += 8; |
144cbad0 | 574 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) |
73d10efa | 575 | t += 4; |
144cbad0 | 576 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) |
73d10efa | 577 | t += 2; |
144cbad0 | 578 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) |
73d10efa | 579 | t += 1; |
765d98c7 | 580 | |
73d10efa | 581 | return t; |
4291d9c8 RS |
582 | } |
583 | ||
73d10efa | 584 | /* Return the logarithm of X, base 2, considering X unsigned, |
765d98c7 | 585 | if X is a power of 2. Otherwise, returns -1. */ |
4291d9c8 RS |
586 | |
587 | int | |
765d98c7 | 588 | exact_log2 (unsigned HOST_WIDE_INT x) |
4291d9c8 | 589 | { |
765d98c7 | 590 | if (x != (x & -x)) |
73d10efa | 591 | return -1; |
765d98c7 | 592 | return floor_log2 (x); |
4291d9c8 RS |
593 | } |
594 | ||
9c727c9a | 595 | #endif /* GCC_VERSION < 3004 */ |
a8a4fe0c | 596 | |
a7023245 | 597 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
c770ac2b ZW |
598 | into ICE messages, which is much more user friendly. In case the |
599 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
4291d9c8 RS |
600 | |
601 | static void | |
e25a75e6 | 602 | crash_signal (int signo) |
4291d9c8 | 603 | { |
c770ac2b | 604 | signal (signo, SIG_DFL); |
52351a5e RE |
605 | |
606 | /* If we crashed while processing an ASM statement, then be a little more | |
607 | graceful. It's most likely the user's fault. */ | |
608 | if (this_is_asm_operands) | |
609 | { | |
610 | output_operand_lossage ("unrecoverable error"); | |
611 | exit (FATAL_EXIT_CODE); | |
612 | } | |
613 | ||
9d533cb5 | 614 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
615 | } |
616 | ||
886e0865 GK |
617 | /* Arrange to dump core on error. (The regular error message is still |
618 | printed first, except in the case of abort().) */ | |
619 | ||
620 | static void | |
e25a75e6 | 621 | setup_core_dumping (void) |
886e0865 GK |
622 | { |
623 | #ifdef SIGABRT | |
624 | signal (SIGABRT, SIG_DFL); | |
625 | #endif | |
626 | #if defined(HAVE_SETRLIMIT) | |
627 | { | |
628 | struct rlimit rlim; | |
629 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 630 | fatal_error ("getting core file size maximum limit: %m"); |
886e0865 GK |
631 | rlim.rlim_cur = rlim.rlim_max; |
632 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 633 | fatal_error ("setting core file size limit to maximum: %m"); |
886e0865 GK |
634 | } |
635 | #endif | |
636 | diagnostic_abort_on_error (global_dc); | |
637 | } | |
638 | ||
639 | ||
4291d9c8 | 640 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 641 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 642 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 643 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
644 | |
645 | void | |
e25a75e6 | 646 | strip_off_ending (char *name, int len) |
4291d9c8 | 647 | { |
2290e0ec | 648 | int i; |
41077ce4 | 649 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
650 | { |
651 | if (name[len - i] == '.') | |
652 | { | |
653 | name[len - i] = '\0'; | |
654 | break; | |
655 | } | |
656 | } | |
4291d9c8 RS |
657 | } |
658 | ||
7dce5088 | 659 | /* Output a quoted string. */ |
0f41302f | 660 | |
7dce5088 | 661 | void |
e25a75e6 | 662 | output_quoted_string (FILE *asm_file, const char *string) |
7dce5088 | 663 | { |
e9a25f70 JL |
664 | #ifdef OUTPUT_QUOTED_STRING |
665 | OUTPUT_QUOTED_STRING (asm_file, string); | |
666 | #else | |
7dce5088 PE |
667 | char c; |
668 | ||
669 | putc ('\"', asm_file); | |
670 | while ((c = *string++) != 0) | |
671 | { | |
042cdf71 ZW |
672 | if (ISPRINT (c)) |
673 | { | |
674 | if (c == '\"' || c == '\\') | |
675 | putc ('\\', asm_file); | |
676 | putc (c, asm_file); | |
677 | } | |
678 | else | |
211a0cbe | 679 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
680 | } |
681 | putc ('\"', asm_file); | |
e9a25f70 | 682 | #endif |
7dce5088 PE |
683 | } |
684 | ||
4291d9c8 RS |
685 | /* Output a file name in the form wanted by System V. */ |
686 | ||
687 | void | |
e25a75e6 | 688 | output_file_directive (FILE *asm_file, const char *input_name) |
4291d9c8 | 689 | { |
00503146 AH |
690 | int len; |
691 | const char *na; | |
fbfb16e2 | 692 | |
00503146 AH |
693 | if (input_name == NULL) |
694 | input_name = "<stdin>"; | |
c8aea42c PB |
695 | else |
696 | input_name = remap_debug_filename (input_name); | |
00503146 AH |
697 | |
698 | len = strlen (input_name); | |
699 | na = input_name + len; | |
4291d9c8 RS |
700 | |
701 | /* NA gets INPUT_NAME sans directory names. */ | |
702 | while (na > input_name) | |
703 | { | |
1a8bb3dd | 704 | if (IS_DIR_SEPARATOR (na[-1])) |
9cabb1d8 | 705 | break; |
4291d9c8 RS |
706 | na--; |
707 | } | |
708 | ||
4291d9c8 RS |
709 | #ifdef ASM_OUTPUT_SOURCE_FILENAME |
710 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
711 | #else | |
7dce5088 PE |
712 | fprintf (asm_file, "\t.file\t"); |
713 | output_quoted_string (asm_file, na); | |
714 | fputc ('\n', asm_file); | |
4291d9c8 | 715 | #endif |
4291d9c8 | 716 | } |
ddc9542b | 717 | |
db5f8b93 RH |
718 | /* A subroutine of wrapup_global_declarations. We've come to the end of |
719 | the compilation unit. All deferred variables should be undeferred, | |
720 | and all incomplete decls should be finalized. */ | |
721 | ||
722 | void | |
723 | wrapup_global_declaration_1 (tree decl) | |
724 | { | |
725 | /* We're not deferring this any longer. Assignment is conditional to | |
726 | avoid needlessly dirtying PCH pages. */ | |
727 | if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
728 | && DECL_DEFER_OUTPUT (decl) != 0) | |
729 | DECL_DEFER_OUTPUT (decl) = 0; | |
730 | ||
731 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
732 | lang_hooks.finish_incomplete_decl (decl); | |
733 | } | |
734 | ||
735 | /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
736 | needs to be output. Return true if it is output. */ | |
737 | ||
738 | bool | |
739 | wrapup_global_declaration_2 (tree decl) | |
740 | { | |
741 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
742 | return false; | |
743 | ||
744 | /* Don't write out static consts, unless we still need them. | |
745 | ||
746 | We also keep static consts if not optimizing (for debugging), | |
747 | unless the user specified -fno-keep-static-consts. | |
748 | ??? They might be better written into the debug information. | |
749 | This is possible when using DWARF. | |
750 | ||
751 | A language processor that wants static constants to be always | |
752 | written out (even if it is not used) is responsible for | |
753 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
754 | calls rest_of_decl_compilation from finish_decl. | |
755 | One motivation for this is that is conventional in some | |
756 | environments to write things like: | |
757 | static const char rcsid[] = "... version string ..."; | |
758 | intending to force the string to be in the executable. | |
759 | ||
760 | A language processor that would prefer to have unneeded | |
761 | static constants "optimized away" would just defer writing | |
762 | them out until here. E.g. C++ does this, because static | |
763 | constants are often defined in header files. | |
764 | ||
765 | ??? A tempting alternative (for both C and C++) would be | |
766 | to force a constant to be written if and only if it is | |
767 | defined in a main file, as opposed to an include file. */ | |
768 | ||
769 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
770 | { | |
8a4a83ed | 771 | struct varpool_node *node; |
db5f8b93 | 772 | bool needed = true; |
8a4a83ed | 773 | node = varpool_node (decl); |
db5f8b93 RH |
774 | |
775 | if (node->finalized) | |
776 | needed = false; | |
777 | else if (node->alias) | |
778 | needed = false; | |
779 | else if (!cgraph_global_info_ready | |
780 | && (TREE_USED (decl) | |
781 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
782 | /* needed */; | |
783 | else if (node->needed) | |
784 | /* needed */; | |
785 | else if (DECL_COMDAT (decl)) | |
786 | needed = false; | |
787 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
788 | && (optimize || !flag_keep_static_consts | |
789 | || DECL_ARTIFICIAL (decl))) | |
790 | needed = false; | |
791 | ||
792 | if (needed) | |
793 | { | |
794 | rest_of_decl_compilation (decl, 1, 1); | |
795 | return true; | |
796 | } | |
797 | } | |
798 | ||
799 | return false; | |
800 | } | |
801 | ||
32291f94 MM |
802 | /* Do any final processing required for the declarations in VEC, of |
803 | which there are LEN. We write out inline functions and variables | |
804 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 805 | Returns nonzero if anything was put out. */ |
854a97f0 | 806 | |
db5f8b93 | 807 | bool |
e25a75e6 | 808 | wrapup_global_declarations (tree *vec, int len) |
32291f94 | 809 | { |
db5f8b93 | 810 | bool reconsider, output_something = false; |
32291f94 | 811 | int i; |
32291f94 MM |
812 | |
813 | for (i = 0; i < len; i++) | |
db5f8b93 | 814 | wrapup_global_declaration_1 (vec[i]); |
32291f94 MM |
815 | |
816 | /* Now emit any global variables or functions that we have been | |
817 | putting off. We need to loop in case one of the things emitted | |
818 | here references another one which comes earlier in the list. */ | |
819 | do | |
820 | { | |
db5f8b93 | 821 | reconsider = false; |
32291f94 | 822 | for (i = 0; i < len; i++) |
db5f8b93 | 823 | reconsider |= wrapup_global_declaration_2 (vec[i]); |
32291f94 | 824 | if (reconsider) |
db5f8b93 | 825 | output_something = true; |
32291f94 MM |
826 | } |
827 | while (reconsider); | |
828 | ||
829 | return output_something; | |
830 | } | |
831 | ||
db5f8b93 RH |
832 | /* A subroutine of check_global_declarations. Issue appropriate warnings |
833 | for the global declaration DECL. */ | |
834 | ||
835 | void | |
836 | check_global_declaration_1 (tree decl) | |
837 | { | |
838 | /* Warn about any function declared static but not defined. We don't | |
839 | warn about variables, because many programs have static variables | |
840 | that exist only to get some text into the object file. */ | |
841 | if (TREE_CODE (decl) == FUNCTION_DECL | |
842 | && DECL_INITIAL (decl) == 0 | |
843 | && DECL_EXTERNAL (decl) | |
844 | && ! DECL_ARTIFICIAL (decl) | |
845 | && ! TREE_NO_WARNING (decl) | |
846 | && ! TREE_PUBLIC (decl) | |
847 | && (warn_unused_function | |
848 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
849 | { | |
850 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
509c9d60 | 851 | pedwarn (input_location, 0, "%q+F used but never defined", decl); |
db5f8b93 | 852 | else |
c5409249 | 853 | warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl); |
db5f8b93 RH |
854 | /* This symbol is effectively an "extern" declaration now. */ |
855 | TREE_PUBLIC (decl) = 1; | |
856 | assemble_external (decl); | |
857 | } | |
858 | ||
859 | /* Warn about static fns or vars defined but not used. */ | |
860 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
861 | /* We don't warn about "static const" variables because the | |
862 | "rcs_id" idiom uses that construction. */ | |
863 | || (warn_unused_variable | |
864 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
865 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
866 | && ! TREE_USED (decl) | |
867 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
868 | to handle multiple external decls in different scopes. */ | |
eb2182e2 | 869 | && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) |
db5f8b93 RH |
870 | && ! DECL_EXTERNAL (decl) |
871 | && ! TREE_PUBLIC (decl) | |
872 | /* A volatile variable might be used in some non-obvious way. */ | |
873 | && ! TREE_THIS_VOLATILE (decl) | |
874 | /* Global register variables must be declared to reserve them. */ | |
875 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
876 | /* Otherwise, ask the language. */ | |
877 | && lang_hooks.decls.warn_unused_global (decl)) | |
c5409249 MLI |
878 | warning ((TREE_CODE (decl) == FUNCTION_DECL) |
879 | ? OPT_Wunused_function | |
880 | : OPT_Wunused_variable, | |
881 | "%q+D defined but not used", decl); | |
db5f8b93 RH |
882 | } |
883 | ||
32291f94 | 884 | /* Issue appropriate warnings for the global declarations in VEC (of |
db5f8b93 | 885 | which there are LEN). */ |
854a97f0 | 886 | |
32291f94 | 887 | void |
e25a75e6 | 888 | check_global_declarations (tree *vec, int len) |
32291f94 | 889 | { |
32291f94 MM |
890 | int i; |
891 | ||
892 | for (i = 0; i < len; i++) | |
db5f8b93 RH |
893 | check_global_declaration_1 (vec[i]); |
894 | } | |
32291f94 | 895 | |
db5f8b93 RH |
896 | /* Emit debugging information for all global declarations in VEC. */ |
897 | ||
898 | void | |
899 | emit_debug_global_declarations (tree *vec, int len) | |
900 | { | |
901 | int i; | |
902 | ||
903 | /* Avoid confusing the debug information machinery when there are errors. */ | |
904 | if (errorcount != 0 || sorrycount != 0) | |
905 | return; | |
906 | ||
907 | timevar_push (TV_SYMOUT); | |
908 | for (i = 0; i < len; i++) | |
909 | debug_hooks->global_decl (vec[i]); | |
910 | timevar_pop (TV_SYMOUT); | |
32291f94 | 911 | } |
032713aa | 912 | |
43f9ce02 GDR |
913 | /* Warn about a use of an identifier which was marked deprecated. */ |
914 | void | |
9b86d6bb | 915 | warn_deprecated_use (tree node, tree attr) |
43f9ce02 | 916 | { |
9b86d6bb L |
917 | const char *msg; |
918 | ||
43f9ce02 GDR |
919 | if (node == 0 || !warn_deprecated_decl) |
920 | return; | |
921 | ||
9b86d6bb L |
922 | if (!attr) |
923 | { | |
924 | if (DECL_P (node)) | |
925 | attr = DECL_ATTRIBUTES (node); | |
926 | else if (TYPE_P (node)) | |
927 | { | |
928 | tree decl = TYPE_STUB_DECL (node); | |
929 | if (decl) | |
930 | attr = lookup_attribute ("deprecated", | |
931 | TYPE_ATTRIBUTES (TREE_TYPE (decl))); | |
932 | } | |
933 | } | |
934 | ||
935 | if (attr) | |
936 | attr = lookup_attribute ("deprecated", attr); | |
937 | ||
938 | if (attr) | |
939 | msg = TREE_STRING_POINTER (TREE_VALUE (TREE_VALUE (attr))); | |
940 | else | |
941 | msg = NULL; | |
942 | ||
43f9ce02 | 943 | if (DECL_P (node)) |
c1667470 PB |
944 | { |
945 | expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
9b86d6bb L |
946 | if (msg) |
947 | warning (OPT_Wdeprecated_declarations, | |
948 | "%qD is deprecated (declared at %s:%d): %s", | |
949 | node, xloc.file, xloc.line, msg); | |
950 | else | |
951 | warning (OPT_Wdeprecated_declarations, | |
952 | "%qD is deprecated (declared at %s:%d)", | |
953 | node, xloc.file, xloc.line); | |
c1667470 | 954 | } |
43f9ce02 GDR |
955 | else if (TYPE_P (node)) |
956 | { | |
4f1e4960 | 957 | tree what = NULL_TREE; |
43f9ce02 GDR |
958 | tree decl = TYPE_STUB_DECL (node); |
959 | ||
108ebf88 JM |
960 | if (TYPE_NAME (node)) |
961 | { | |
962 | if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
4f1e4960 | 963 | what = TYPE_NAME (node); |
108ebf88 JM |
964 | else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL |
965 | && DECL_NAME (TYPE_NAME (node))) | |
4f1e4960 | 966 | what = DECL_NAME (TYPE_NAME (node)); |
108ebf88 | 967 | } |
43f9ce02 | 968 | |
c1667470 | 969 | if (decl) |
43f9ce02 | 970 | { |
c1667470 PB |
971 | expanded_location xloc |
972 | = expand_location (DECL_SOURCE_LOCATION (decl)); | |
973 | if (what) | |
9b86d6bb L |
974 | { |
975 | if (msg) | |
976 | warning (OPT_Wdeprecated_declarations, | |
977 | "%qE is deprecated (declared at %s:%d): %s", | |
978 | what, xloc.file, xloc.line, msg); | |
979 | else | |
980 | warning (OPT_Wdeprecated_declarations, | |
981 | "%qE is deprecated (declared at %s:%d)", what, | |
982 | xloc.file, xloc.line); | |
983 | } | |
43f9ce02 | 984 | else |
9b86d6bb L |
985 | { |
986 | if (msg) | |
987 | warning (OPT_Wdeprecated_declarations, | |
988 | "type is deprecated (declared at %s:%d): %s", | |
989 | xloc.file, xloc.line, msg); | |
990 | else | |
991 | warning (OPT_Wdeprecated_declarations, | |
992 | "type is deprecated (declared at %s:%d)", | |
993 | xloc.file, xloc.line); | |
994 | } | |
43f9ce02 | 995 | } |
43f9ce02 | 996 | else |
c1667470 PB |
997 | { |
998 | if (what) | |
9b86d6bb L |
999 | { |
1000 | if (msg) | |
1001 | warning (OPT_Wdeprecated_declarations, "%qE is deprecated: %s", | |
1002 | what, msg); | |
1003 | else | |
1004 | warning (OPT_Wdeprecated_declarations, "%qE is deprecated", what); | |
1005 | } | |
108ebf88 | 1006 | else |
9b86d6bb L |
1007 | { |
1008 | if (msg) | |
1009 | warning (OPT_Wdeprecated_declarations, "type is deprecated: %s", | |
1010 | msg); | |
1011 | else | |
1012 | warning (OPT_Wdeprecated_declarations, "type is deprecated"); | |
1013 | } | |
c1667470 | 1014 | } |
43f9ce02 GDR |
1015 | } |
1016 | } | |
1017 | ||
f5e99456 NB |
1018 | /* Compile an entire translation unit. Write a file of assembly |
1019 | output and various debugging dumps. */ | |
4291d9c8 RS |
1020 | |
1021 | static void | |
e25a75e6 | 1022 | compile_file (void) |
4291d9c8 | 1023 | { |
4291d9c8 RS |
1024 | /* Initialize yet another pass. */ |
1025 | ||
dae4174e TT |
1026 | ggc_protect_identifiers = true; |
1027 | ||
9b3e897d | 1028 | init_cgraph (); |
b93a436e | 1029 | init_final (main_input_filename); |
ca29da43 | 1030 | coverage_init (aux_base_name); |
9fe0cb7d | 1031 | statistics_init (); |
78bf7bd0 | 1032 | invoke_plugin_callbacks (PLUGIN_START_UNIT, NULL); |
4291d9c8 | 1033 | |
2a9a326b | 1034 | timevar_push (TV_PARSE); |
4291d9c8 | 1035 | |
52dabb6c NB |
1036 | /* Call the parser, which parses the entire file (calling |
1037 | rest_of_compilation for each function). */ | |
ae2bcd98 | 1038 | lang_hooks.parse_file (set_yydebug); |
4291d9c8 | 1039 | |
4291d9c8 RS |
1040 | /* Compilation is now finished except for writing |
1041 | what's left of the symbol table output. */ | |
2a9a326b | 1042 | timevar_pop (TV_PARSE); |
4291d9c8 | 1043 | |
e4305460 | 1044 | if (flag_syntax_only) |
22703ccc | 1045 | return; |
1fe65c00 | 1046 | |
dae4174e TT |
1047 | ggc_protect_identifiers = false; |
1048 | ||
2329c6f5 | 1049 | /* This must also call cgraph_finalize_compilation_unit. */ |
ae2bcd98 | 1050 | lang_hooks.decls.final_write_globals (); |
e4305460 GK |
1051 | |
1052 | if (errorcount || sorrycount) | |
1053 | return; | |
1054 | ||
8a4a83ed | 1055 | varpool_assemble_pending_decls (); |
e4d5432a | 1056 | finish_aliases_2 (); |
e69529cd | 1057 | |
ccab73c3 FCE |
1058 | /* Likewise for mudflap static object registrations. */ |
1059 | if (flag_mudflap) | |
1060 | mudflap_finish_file (); | |
1061 | ||
8893239d RH |
1062 | /* Likewise for emulated thread-local storage. */ |
1063 | if (!targetm.have_tls) | |
1064 | emutls_finish (); | |
1065 | ||
1d3dbd99 | 1066 | output_shared_constant_pool (); |
aacd3885 RS |
1067 | output_object_blocks (); |
1068 | ||
4b8af8d9 | 1069 | /* Write out any pending weak symbol declarations. */ |
4b8af8d9 JM |
1070 | weak_finish (); |
1071 | ||
854a97f0 | 1072 | /* Do dbx symbols. */ |
2a9a326b | 1073 | timevar_push (TV_SYMOUT); |
7f905405 | 1074 | |
658f32fd | 1075 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
0021b564 JM |
1076 | if (dwarf2out_do_frame ()) |
1077 | dwarf2out_frame_finish (); | |
1078 | #endif | |
1079 | ||
e2a12aca | 1080 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 1081 | timevar_pop (TV_SYMOUT); |
9a666dda | 1082 | |
4291d9c8 RS |
1083 | /* Output some stuff at end of file if nec. */ |
1084 | ||
2a1ee410 RH |
1085 | dw2_output_indirect_constants (); |
1086 | ||
c47c29c8 | 1087 | /* Flush any pending external directives. */ |
bc6d19ab ZW |
1088 | process_pending_assemble_externals (); |
1089 | ||
acb0db7b ZW |
1090 | /* Attach a special .ident directive to the end of the file to identify |
1091 | the version of GCC which compiled this code. The format of the .ident | |
1092 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1093 | #ifdef IDENT_ASM_OP | |
1094 | if (!flag_no_ident) | |
2f41c1d6 PB |
1095 | { |
1096 | const char *pkg_version = "(GNU) "; | |
1097 | ||
1098 | if (strcmp ("(GCC) ", pkgversion_string)) | |
1099 | pkg_version = pkgversion_string; | |
1100 | fprintf (asm_out_file, "%s\"GCC: %s%s\"\n", | |
1101 | IDENT_ASM_OP, pkg_version, version_string); | |
1102 | } | |
acb0db7b | 1103 | #endif |
57bef48e | 1104 | |
9c8e65c3 OR |
1105 | /* Invoke registered plugin callbacks. */ |
1106 | invoke_plugin_callbacks (PLUGIN_FINISH_UNIT, NULL); | |
1107 | ||
57bef48e AP |
1108 | /* This must be at the end. Some target ports emit end of file directives |
1109 | into the assembly file here, and hence we can not output anything to the | |
1110 | assembly file after this point. */ | |
1111 | targetm.asm_out.file_end (); | |
4291d9c8 | 1112 | } |
ddc9542b | 1113 | |
f6db1481 | 1114 | /* Parse a -d... command line switch. */ |
4291d9c8 RS |
1115 | |
1116 | void | |
f6db1481 | 1117 | decode_d_option (const char *arg) |
4291d9c8 | 1118 | { |
f6db1481 | 1119 | int c; |
33c21f5c | 1120 | |
f6db1481 RH |
1121 | while (*arg) |
1122 | switch (c = *arg++) | |
1123 | { | |
1124 | case 'A': | |
1125 | flag_debug_asm = 1; | |
1126 | break; | |
1127 | case 'p': | |
1128 | flag_print_asm_name = 1; | |
1129 | break; | |
1130 | case 'P': | |
1131 | flag_dump_rtl_in_asm = 1; | |
1132 | flag_print_asm_name = 1; | |
1133 | break; | |
1134 | case 'v': | |
1135 | graph_dump_format = vcg; | |
1136 | break; | |
1137 | case 'x': | |
1138 | rtl_dump_and_exit = 1; | |
1139 | break; | |
1140 | case 'y': | |
1141 | set_yydebug = 1; | |
1142 | break; | |
1143 | case 'D': /* These are handled by the preprocessor. */ | |
1144 | case 'I': | |
8ddbbcae JH |
1145 | case 'M': |
1146 | case 'N': | |
93d45d9e | 1147 | case 'U': |
f6db1481 RH |
1148 | break; |
1149 | case 'H': | |
1150 | setup_core_dumping(); | |
1151 | break; | |
f6db1481 | 1152 | case 'a': |
9e016eba JH |
1153 | enable_rtl_dump_file (); |
1154 | break; | |
1155 | ||
f6db1481 | 1156 | default: |
d4ee4d25 | 1157 | warning (0, "unrecognized gcc debugging option: %c", c); |
f6db1481 RH |
1158 | break; |
1159 | } | |
4291d9c8 RS |
1160 | } |
1161 | ||
f6db1481 RH |
1162 | /* Indexed by enum debug_info_type. */ |
1163 | const char *const debug_type_names[] = | |
4291d9c8 | 1164 | { |
8f49f0f1 | 1165 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" |
f6db1481 | 1166 | }; |
1b3d8f8a | 1167 | |
f6db1481 RH |
1168 | /* Print version information to FILE. |
1169 | Each line begins with INDENT (for the case where FILE is the | |
1170 | assembler output file). */ | |
3c030e88 | 1171 | |
f6db1481 RH |
1172 | void |
1173 | print_version (FILE *file, const char *indent) | |
f5e99456 | 1174 | { |
ab532386 | 1175 | static const char fmt1[] = |
f5e99456 | 1176 | #ifdef __GNUC__ |
2f41c1d6 | 1177 | N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") |
f5e99456 | 1178 | #else |
2f41c1d6 | 1179 | N_("%s%s%s %sversion %s (%s) compiled by CC, ") |
f5e99456 | 1180 | #endif |
ab532386 | 1181 | ; |
c128599a | 1182 | #ifdef HAVE_mpc |
ab532386 | 1183 | static const char fmt2[] = |
c128599a KG |
1184 | N_("GMP version %s, MPFR version %s, MPC version %s\n"); |
1185 | #else | |
1186 | static const char fmt2[] = | |
1187 | N_("GMP version %s, MPFR version %s\n"); | |
1188 | #endif | |
0968bb3d | 1189 | static const char fmt3[] = |
3a204175 | 1190 | N_("%s%swarning: %s header version %s differs from library version %s.\n"); |
0968bb3d | 1191 | static const char fmt4[] = |
ab532386 JM |
1192 | N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); |
1193 | #ifndef __VERSION__ | |
1194 | #define __VERSION__ "[?]" | |
1195 | #endif | |
1196 | fprintf (file, | |
1197 | file == stderr ? _(fmt1) : fmt1, | |
1198 | indent, *indent != 0 ? " " : "", | |
2f41c1d6 | 1199 | lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, |
f5e99456 | 1200 | indent, __VERSION__); |
0968bb3d KG |
1201 | |
1202 | /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
04be270f KG |
1203 | two string formats, "i.j.k" and "i.j" when k is zero. As of |
1204 | gmp-4.3.0, GMP always uses the 3 number format. */ | |
0968bb3d KG |
1205 | #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
1206 | #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X) | |
04be270f KG |
1207 | #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
1208 | #define GCC_GMP_VERSION \ | |
1209 | GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) | |
1210 | #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 | |
0968bb3d KG |
1211 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ |
1212 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) | |
1213 | #else | |
1214 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ | |
1215 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \ | |
1216 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL) | |
1217 | #endif | |
ab532386 JM |
1218 | fprintf (file, |
1219 | file == stderr ? _(fmt2) : fmt2, | |
c128599a KG |
1220 | GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING |
1221 | #ifdef HAVE_mpc | |
1222 | , MPC_VERSION_STRING | |
1223 | #endif | |
1224 | ); | |
0968bb3d KG |
1225 | if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) |
1226 | fprintf (file, | |
1227 | file == stderr ? _(fmt3) : fmt3, | |
3a204175 | 1228 | indent, *indent != 0 ? " " : "", |
0968bb3d KG |
1229 | "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); |
1230 | if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
1231 | fprintf (file, | |
1232 | file == stderr ? _(fmt3) : fmt3, | |
3a204175 | 1233 | indent, *indent != 0 ? " " : "", |
0968bb3d | 1234 | "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); |
c128599a KG |
1235 | #ifdef HAVE_mpc |
1236 | if (strcmp (MPC_VERSION_STRING, mpc_get_version ())) | |
1237 | fprintf (file, | |
1238 | file == stderr ? _(fmt3) : fmt3, | |
1239 | indent, *indent != 0 ? " " : "", | |
1240 | "MPC", MPC_VERSION_STRING, mpc_get_version ()); | |
1241 | #endif | |
0968bb3d KG |
1242 | fprintf (file, |
1243 | file == stderr ? _(fmt4) : fmt4, | |
7a69a172 GB |
1244 | indent, *indent != 0 ? " " : "", |
1245 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
44e9f006 RAE |
1246 | |
1247 | print_plugins_versions (file, indent); | |
f5e99456 NB |
1248 | } |
1249 | ||
e0d9d0dd NC |
1250 | #ifdef ASM_COMMENT_START |
1251 | static int | |
1252 | print_to_asm_out_file (print_switch_type type, const char * text) | |
1253 | { | |
1254 | bool prepend_sep = true; | |
1255 | ||
1256 | switch (type) | |
1257 | { | |
1258 | case SWITCH_TYPE_LINE_END: | |
1259 | putc ('\n', asm_out_file); | |
1260 | return 1; | |
1261 | ||
1262 | case SWITCH_TYPE_LINE_START: | |
1263 | fputs (ASM_COMMENT_START, asm_out_file); | |
1264 | return strlen (ASM_COMMENT_START); | |
1265 | ||
1266 | case SWITCH_TYPE_DESCRIPTIVE: | |
1267 | if (ASM_COMMENT_START[0] == 0) | |
1268 | prepend_sep = false; | |
1269 | /* Drop through. */ | |
1270 | case SWITCH_TYPE_PASSED: | |
1271 | case SWITCH_TYPE_ENABLED: | |
1272 | if (prepend_sep) | |
1273 | fputc (' ', asm_out_file); | |
1274 | fprintf (asm_out_file, text); | |
1275 | /* No need to return the length here as | |
1276 | print_single_switch has already done it. */ | |
1277 | return 0; | |
1278 | ||
1279 | default: | |
1280 | return -1; | |
1281 | } | |
1282 | } | |
1283 | #endif | |
1284 | ||
1285 | static int | |
1286 | print_to_stderr (print_switch_type type, const char * text) | |
1287 | { | |
1288 | switch (type) | |
1289 | { | |
1290 | case SWITCH_TYPE_LINE_END: | |
1291 | putc ('\n', stderr); | |
1292 | return 1; | |
1293 | ||
1294 | case SWITCH_TYPE_LINE_START: | |
1295 | return 0; | |
1296 | ||
1297 | case SWITCH_TYPE_PASSED: | |
1298 | case SWITCH_TYPE_ENABLED: | |
1299 | fputc (' ', stderr); | |
1300 | /* Drop through. */ | |
1301 | ||
1302 | case SWITCH_TYPE_DESCRIPTIVE: | |
1303 | fprintf (stderr, text); | |
1304 | /* No need to return the length here as | |
1305 | print_single_switch has already done it. */ | |
1306 | return 0; | |
1307 | ||
1308 | default: | |
1309 | return -1; | |
1310 | } | |
1311 | } | |
1312 | ||
f5e99456 | 1313 | /* Print an option value and return the adjusted position in the line. |
e0d9d0dd NC |
1314 | ??? print_fn doesn't handle errors, eg disk full; presumably other |
1315 | code will catch a disk full though. */ | |
f5e99456 NB |
1316 | |
1317 | static int | |
e0d9d0dd NC |
1318 | print_single_switch (print_switch_fn_type print_fn, |
1319 | int pos, | |
1320 | print_switch_type type, | |
1321 | const char * text) | |
f5e99456 | 1322 | { |
e0d9d0dd NC |
1323 | /* The ultrix fprintf returns 0 on success, so compute the result |
1324 | we want here since we need it for the following test. The +1 | |
2e226e66 | 1325 | is for the separator character that will probably be emitted. */ |
e0d9d0dd | 1326 | int len = strlen (text) + 1; |
f5e99456 NB |
1327 | |
1328 | if (pos != 0 | |
e0d9d0dd | 1329 | && pos + len > MAX_LINE) |
f5e99456 | 1330 | { |
e0d9d0dd | 1331 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 NB |
1332 | pos = 0; |
1333 | } | |
e0d9d0dd | 1334 | |
f5e99456 | 1335 | if (pos == 0) |
e0d9d0dd NC |
1336 | pos += print_fn (SWITCH_TYPE_LINE_START, NULL); |
1337 | ||
1338 | print_fn (type, text); | |
1339 | return pos + len; | |
f5e99456 NB |
1340 | } |
1341 | ||
e0d9d0dd | 1342 | /* Print active target switches using PRINT_FN. |
f5e99456 NB |
1343 | POS is the current cursor position and MAX is the size of a "line". |
1344 | Each line begins with INDENT and ends with TERM. | |
1345 | Each switch is separated from the next by SEP. */ | |
1346 | ||
1347 | static void | |
e0d9d0dd | 1348 | print_switch_values (print_switch_fn_type print_fn) |
f5e99456 | 1349 | { |
e0d9d0dd | 1350 | int pos = 0; |
f5e99456 | 1351 | size_t j; |
b86f6cd9 | 1352 | const char **p; |
f5e99456 | 1353 | |
a37db56b | 1354 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
c07e5477 | 1355 | that it can be printed below. This helps reproducibility. */ |
403d4851 AO |
1356 | if (!flag_random_seed) |
1357 | init_random_seed (); | |
a37db56b | 1358 | |
f5e99456 | 1359 | /* Print the options as passed. */ |
e0d9d0dd NC |
1360 | pos = print_single_switch (print_fn, pos, |
1361 | SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
f5e99456 NB |
1362 | |
1363 | for (p = &save_argv[1]; *p != NULL; p++) | |
e0d9d0dd NC |
1364 | { |
1365 | if (**p == '-') | |
1366 | { | |
1367 | /* Ignore these. */ | |
1368 | if (strcmp (*p, "-o") == 0 | |
1369 | || strcmp (*p, "-dumpbase") == 0 | |
1370 | || strcmp (*p, "-auxbase") == 0) | |
1371 | { | |
1372 | if (p[1] != NULL) | |
1373 | p++; | |
1374 | continue; | |
1375 | } | |
1376 | ||
1377 | if (strcmp (*p, "-quiet") == 0 | |
1378 | || strcmp (*p, "-version") == 0) | |
f5e99456 | 1379 | continue; |
e0d9d0dd NC |
1380 | |
1381 | if ((*p)[1] == 'd') | |
1382 | continue; | |
1383 | } | |
1384 | ||
1385 | pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
1386 | } | |
1387 | ||
f5e99456 | 1388 | if (pos > 0) |
e0d9d0dd | 1389 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 NB |
1390 | |
1391 | /* Print the -f and -m options that have been enabled. | |
1392 | We don't handle language specific options but printing argv | |
1393 | should suffice. */ | |
e0d9d0dd NC |
1394 | pos = print_single_switch (print_fn, 0, |
1395 | SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
f5e99456 | 1396 | |
50431bc4 | 1397 | for (j = 0; j < cl_options_count; j++) |
75685792 | 1398 | if ((cl_options[j].flags & CL_REPORT) |
ccf08a6e | 1399 | && option_enabled (j) > 0) |
e0d9d0dd NC |
1400 | pos = print_single_switch (print_fn, pos, |
1401 | SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
f5e99456 | 1402 | |
e0d9d0dd | 1403 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
f5e99456 | 1404 | } |
ddc9542b | 1405 | |
f5e99456 NB |
1406 | /* Open assembly code output file. Do this even if -fsyntax-only is |
1407 | on, because then the driver will have provided the name of a | |
1408 | temporary file or bit bucket for us. NAME is the file specified on | |
1409 | the command line, possibly NULL. */ | |
1410 | static void | |
e25a75e6 | 1411 | init_asm_output (const char *name) |
f5e99456 NB |
1412 | { |
1413 | if (name == NULL && asm_file_name == 0) | |
1414 | asm_out_file = stdout; | |
1415 | else | |
1416 | { | |
1417 | if (asm_file_name == 0) | |
9cabb1d8 KH |
1418 | { |
1419 | int len = strlen (dump_base_name); | |
a8a4fe0c | 1420 | char *dumpname = XNEWVEC (char, len + 6); |
e0d9d0dd | 1421 | |
9cabb1d8 KH |
1422 | memcpy (dumpname, dump_base_name, len + 1); |
1423 | strip_off_ending (dumpname, len); | |
1424 | strcat (dumpname, ".s"); | |
1425 | asm_file_name = dumpname; | |
1426 | } | |
f5e99456 | 1427 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 1428 | asm_out_file = stdout; |
f5e99456 | 1429 | else |
90aa6719 | 1430 | asm_out_file = fopen (asm_file_name, "w+b"); |
f5e99456 | 1431 | if (asm_out_file == 0) |
971801ff | 1432 | fatal_error ("can%'t open %s for writing: %m", asm_file_name); |
f5e99456 NB |
1433 | } |
1434 | ||
f5e99456 NB |
1435 | if (!flag_syntax_only) |
1436 | { | |
1bc7c5b6 | 1437 | targetm.asm_out.file_start (); |
f5e99456 | 1438 | |
e0d9d0dd NC |
1439 | if (flag_record_gcc_switches) |
1440 | { | |
1441 | if (targetm.asm_out.record_gcc_switches) | |
1442 | { | |
1443 | /* Let the target know that we are about to start recording. */ | |
1444 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1445 | NULL); | |
1446 | /* Now record the switches. */ | |
1447 | print_switch_values (targetm.asm_out.record_gcc_switches); | |
1448 | /* Let the target know that the recording is over. */ | |
1449 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1450 | NULL); | |
1451 | } | |
1452 | else | |
1f5b3869 | 1453 | inform (input_location, "-frecord-gcc-switches is not supported by the current target"); |
e0d9d0dd NC |
1454 | } |
1455 | ||
f5e99456 NB |
1456 | #ifdef ASM_COMMENT_START |
1457 | if (flag_verbose_asm) | |
1458 | { | |
e0d9d0dd NC |
1459 | /* Print the list of switches in effect |
1460 | into the assembler file as comments. */ | |
f5e99456 | 1461 | print_version (asm_out_file, ASM_COMMENT_START); |
e0d9d0dd | 1462 | print_switch_values (print_to_asm_out_file); |
f5e99456 NB |
1463 | fprintf (asm_out_file, "\n"); |
1464 | } | |
1465 | #endif | |
1466 | } | |
1467 | } | |
ddc9542b | 1468 | |
5c60a017 RS |
1469 | /* Return true if the state of option OPTION should be stored in PCH files |
1470 | and checked by default_pch_valid_p. Store the option's current state | |
1471 | in STATE if so. */ | |
1472 | ||
1473 | static inline bool | |
1474 | option_affects_pch_p (int option, struct cl_option_state *state) | |
1475 | { | |
1476 | if ((cl_options[option].flags & CL_TARGET) == 0) | |
1477 | return false; | |
1478 | if (cl_options[option].flag_var == &target_flags) | |
1479 | if (targetm.check_pch_target_flags) | |
1480 | return false; | |
1481 | return get_option_state (option, state); | |
1482 | } | |
1483 | ||
7bb1ad93 GK |
1484 | /* Default version of get_pch_validity. |
1485 | By default, every flag difference is fatal; that will be mostly right for | |
1486 | most targets, but completely right for very few. */ | |
1487 | ||
1488 | void * | |
1489 | default_get_pch_validity (size_t *len) | |
1490 | { | |
5c60a017 | 1491 | struct cl_option_state state; |
7bb1ad93 GK |
1492 | size_t i; |
1493 | char *result, *r; | |
fbfb16e2 | 1494 | |
bacf5b96 RS |
1495 | *len = 2; |
1496 | if (targetm.check_pch_target_flags) | |
1497 | *len += sizeof (target_flags); | |
5c60a017 RS |
1498 | for (i = 0; i < cl_options_count; i++) |
1499 | if (option_affects_pch_p (i, &state)) | |
1500 | *len += state.size; | |
7bb1ad93 | 1501 | |
a8a4fe0c | 1502 | result = r = XNEWVEC (char, *len); |
7bb1ad93 GK |
1503 | r[0] = flag_pic; |
1504 | r[1] = flag_pie; | |
1505 | r += 2; | |
bacf5b96 | 1506 | if (targetm.check_pch_target_flags) |
7bb1ad93 | 1507 | { |
bacf5b96 RS |
1508 | memcpy (r, &target_flags, sizeof (target_flags)); |
1509 | r += sizeof (target_flags); | |
7bb1ad93 | 1510 | } |
bacf5b96 | 1511 | |
5c60a017 RS |
1512 | for (i = 0; i < cl_options_count; i++) |
1513 | if (option_affects_pch_p (i, &state)) | |
1514 | { | |
1515 | memcpy (r, state.data, state.size); | |
1516 | r += state.size; | |
1517 | } | |
7bb1ad93 GK |
1518 | |
1519 | return result; | |
1520 | } | |
1521 | ||
bacf5b96 RS |
1522 | /* Return a message which says that a PCH file was created with a different |
1523 | setting of OPTION. */ | |
1524 | ||
1525 | static const char * | |
1526 | pch_option_mismatch (const char *option) | |
1527 | { | |
1528 | char *r; | |
1529 | ||
1530 | asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
1531 | if (r == NULL) | |
1532 | return _("out of memory"); | |
1533 | return r; | |
1534 | } | |
1535 | ||
7bb1ad93 GK |
1536 | /* Default version of pch_valid_p. */ |
1537 | ||
1538 | const char * | |
1539 | default_pch_valid_p (const void *data_p, size_t len) | |
1540 | { | |
5c60a017 | 1541 | struct cl_option_state state; |
7bb1ad93 | 1542 | const char *data = (const char *)data_p; |
7bb1ad93 | 1543 | size_t i; |
fbfb16e2 | 1544 | |
7bb1ad93 GK |
1545 | /* -fpic and -fpie also usually make a PCH invalid. */ |
1546 | if (data[0] != flag_pic) | |
1547 | return _("created and used with different settings of -fpic"); | |
1548 | if (data[1] != flag_pie) | |
1549 | return _("created and used with different settings of -fpie"); | |
1550 | data += 2; | |
1551 | ||
1552 | /* Check target_flags. */ | |
8d932be3 RS |
1553 | if (targetm.check_pch_target_flags) |
1554 | { | |
bacf5b96 RS |
1555 | int tf; |
1556 | const char *r; | |
1557 | ||
1558 | memcpy (&tf, data, sizeof (target_flags)); | |
1559 | data += sizeof (target_flags); | |
1560 | len -= sizeof (target_flags); | |
1561 | r = targetm.check_pch_target_flags (tf); | |
8d932be3 RS |
1562 | if (r != NULL) |
1563 | return r; | |
1564 | } | |
7bb1ad93 | 1565 | |
5c60a017 RS |
1566 | for (i = 0; i < cl_options_count; i++) |
1567 | if (option_affects_pch_p (i, &state)) | |
1568 | { | |
1569 | if (memcmp (data, state.data, state.size) != 0) | |
bacf5b96 | 1570 | return pch_option_mismatch (cl_options[i].opt_text); |
5c60a017 RS |
1571 | data += state.size; |
1572 | len -= state.size; | |
1573 | } | |
1574 | ||
7bb1ad93 | 1575 | return NULL; |
7bb1ad93 GK |
1576 | } |
1577 | ||
b6fe0bb8 GDR |
1578 | /* Default tree printer. Handles declarations only. */ |
1579 | static bool | |
39ce81c9 | 1580 | default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, |
dee15844 | 1581 | int precision, bool wide, bool set_locus, bool hash) |
b6fe0bb8 | 1582 | { |
dad2a933 RH |
1583 | tree t; |
1584 | ||
39ce81c9 | 1585 | /* FUTURE: %+x should set the locus. */ |
dee15844 | 1586 | if (precision != 0 || wide || hash) |
39ce81c9 ZW |
1587 | return false; |
1588 | ||
1589 | switch (*spec) | |
b6fe0bb8 | 1590 | { |
4e53d196 SB |
1591 | case 'E': |
1592 | t = va_arg (*text->args_ptr, tree); | |
1593 | if (TREE_CODE (t) == IDENTIFIER_NODE) | |
1594 | { | |
4f1e4960 | 1595 | pp_identifier (pp, IDENTIFIER_POINTER (t)); |
4e53d196 SB |
1596 | return true; |
1597 | } | |
1598 | break; | |
1599 | ||
b6fe0bb8 | 1600 | case 'D': |
dad2a933 | 1601 | t = va_arg (*text->args_ptr, tree); |
f991abd1 | 1602 | if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) |
dad2a933 RH |
1603 | t = DECL_DEBUG_EXPR (t); |
1604 | break; | |
1605 | ||
b6fe0bb8 GDR |
1606 | case 'F': |
1607 | case 'T': | |
dad2a933 RH |
1608 | t = va_arg (*text->args_ptr, tree); |
1609 | break; | |
b6fe0bb8 GDR |
1610 | |
1611 | default: | |
1612 | return false; | |
1613 | } | |
dad2a933 | 1614 | |
dee15844 JM |
1615 | if (set_locus && text->locus) |
1616 | *text->locus = DECL_SOURCE_LOCATION (t); | |
1617 | ||
dad2a933 RH |
1618 | if (DECL_P (t)) |
1619 | { | |
1620 | const char *n = DECL_NAME (t) | |
4f1e4960 JM |
1621 | ? identifier_to_locale (lang_hooks.decl_printable_name (t, 2)) |
1622 | : _("<anonymous>"); | |
dad2a933 RH |
1623 | pp_string (pp, n); |
1624 | } | |
1625 | else | |
438d798f | 1626 | dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0); |
dad2a933 RH |
1627 | |
1628 | return true; | |
b6fe0bb8 GDR |
1629 | } |
1630 | ||
5ffeb913 TT |
1631 | /* A helper function; used as the reallocator function for cpp's line |
1632 | table. */ | |
1633 | static void * | |
1634 | realloc_for_line_map (void *ptr, size_t len) | |
1635 | { | |
1636 | return ggc_realloc (ptr, len); | |
1637 | } | |
1638 | ||
f5e99456 NB |
1639 | /* Initialization of the front end environment, before command line |
1640 | options are parsed. Signal handlers, internationalization etc. | |
1641 | ARGV0 is main's argv[0]. */ | |
1642 | static void | |
b86f6cd9 | 1643 | general_init (const char *argv0) |
f5e99456 | 1644 | { |
b86f6cd9 | 1645 | const char *p; |
f5e99456 NB |
1646 | |
1647 | p = argv0 + strlen (argv0); | |
1648 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
1649 | --p; | |
1650 | progname = p; | |
1651 | ||
1652 | xmalloc_set_program_name (progname); | |
e1a132c6 | 1653 | |
5351f1ca NB |
1654 | hex_init (); |
1655 | ||
98a3dad4 | 1656 | /* Unlock the stdio streams. */ |
2653bb0c | 1657 | unlock_std_streams (); |
98a3dad4 | 1658 | |
191bf464 | 1659 | gcc_init_libintl (); |
ab87f8c8 | 1660 | |
b6fe0bb8 GDR |
1661 | /* Initialize the diagnostics reporting machinery, so option parsing |
1662 | can give warnings and errors. */ | |
1663 | diagnostic_initialize (global_dc); | |
1664 | /* Set a default printer. Language specific initializations will | |
1665 | override it later. */ | |
1666 | pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
1667 | ||
a7023245 ZW |
1668 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
1669 | #ifdef SIGSEGV | |
1670 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 1671 | #endif |
a7023245 ZW |
1672 | #ifdef SIGILL |
1673 | signal (SIGILL, crash_signal); | |
1674 | #endif | |
1675 | #ifdef SIGBUS | |
1676 | signal (SIGBUS, crash_signal); | |
1677 | #endif | |
1678 | #ifdef SIGABRT | |
1679 | signal (SIGABRT, crash_signal); | |
1680 | #endif | |
1681 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
1682 | signal (SIGIOT, crash_signal); | |
1683 | #endif | |
15e5ad76 ZW |
1684 | #ifdef SIGFPE |
1685 | signal (SIGFPE, crash_signal); | |
1686 | #endif | |
854a97f0 | 1687 | |
476d9098 GK |
1688 | /* Other host-specific signal setup. */ |
1689 | (*host_hooks.extra_signals)(); | |
1690 | ||
c79043f3 NB |
1691 | /* Initialize the garbage-collector, string pools and tree type hash |
1692 | table. */ | |
1693 | init_ggc (); | |
1694 | init_stringpool (); | |
5ffeb913 TT |
1695 | line_table = GGC_NEW (struct line_maps); |
1696 | linemap_init (line_table); | |
1697 | line_table->reallocator = realloc_for_line_map; | |
c79043f3 | 1698 | init_ttree (); |
6a08f7b3 | 1699 | |
f5e99456 NB |
1700 | /* Initialize register usage now so switches may override. */ |
1701 | init_reg_sets (); | |
764dbbf2 | 1702 | |
c6d9a88c MM |
1703 | /* Register the language-independent parameters. */ |
1704 | add_params (lang_independent_params, LAST_PARAM); | |
1705 | ||
9ac121af KG |
1706 | /* This must be done after add_params but before argument processing. */ |
1707 | init_ggc_heuristics(); | |
ef330312 | 1708 | init_optimization_passes (); |
9fe0cb7d | 1709 | statistics_early_init (); |
a32274ad | 1710 | } |
ddc9542b | 1711 | |
aacd3885 RS |
1712 | /* Return true if the current target supports -fsection-anchors. */ |
1713 | ||
1714 | static bool | |
1715 | target_supports_section_anchors_p (void) | |
1716 | { | |
1717 | if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
1718 | return false; | |
1719 | ||
1720 | if (targetm.asm_out.output_anchor == NULL) | |
1721 | return false; | |
1722 | ||
1723 | return true; | |
1724 | } | |
1725 | ||
b5deb7b6 SL |
1726 | /* Default the align_* variables to 1 if they're still unset, and |
1727 | set up the align_*_log variables. */ | |
1728 | static void | |
1729 | init_alignments (void) | |
1730 | { | |
1731 | if (align_loops <= 0) | |
1732 | align_loops = 1; | |
1733 | if (align_loops_max_skip > align_loops) | |
1734 | align_loops_max_skip = align_loops - 1; | |
1735 | align_loops_log = floor_log2 (align_loops * 2 - 1); | |
1736 | if (align_jumps <= 0) | |
1737 | align_jumps = 1; | |
1738 | if (align_jumps_max_skip > align_jumps) | |
1739 | align_jumps_max_skip = align_jumps - 1; | |
1740 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); | |
1741 | if (align_labels <= 0) | |
1742 | align_labels = 1; | |
1743 | align_labels_log = floor_log2 (align_labels * 2 - 1); | |
1744 | if (align_labels_max_skip > align_labels) | |
1745 | align_labels_max_skip = align_labels - 1; | |
1746 | if (align_functions <= 0) | |
1747 | align_functions = 1; | |
1748 | align_functions_log = floor_log2 (align_functions * 2 - 1); | |
1749 | } | |
1750 | ||
a32274ad NB |
1751 | /* Process the options that have been parsed. */ |
1752 | static void | |
e25a75e6 | 1753 | process_options (void) |
a32274ad | 1754 | { |
456b8ce5 UB |
1755 | /* Just in case lang_hooks.post_options ends up calling a debug_hook. |
1756 | This can happen with incorrect pre-processed input. */ | |
1757 | debug_hooks = &do_nothing_debug_hooks; | |
1758 | ||
e73f7547 MLI |
1759 | /* This replaces set_Wunused. */ |
1760 | if (warn_unused_function == -1) | |
1761 | warn_unused_function = warn_unused; | |
1762 | if (warn_unused_label == -1) | |
1763 | warn_unused_label = warn_unused; | |
1764 | /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */ | |
1765 | if (warn_unused_parameter == -1) | |
1766 | warn_unused_parameter = (warn_unused && extra_warnings); | |
1767 | if (warn_unused_variable == -1) | |
1768 | warn_unused_variable = warn_unused; | |
1769 | if (warn_unused_value == -1) | |
1770 | warn_unused_value = warn_unused; | |
1771 | ||
62a67c94 MLI |
1772 | /* This replaces set_Wextra. */ |
1773 | if (warn_uninitialized == -1) | |
1774 | warn_uninitialized = extra_warnings; | |
1775 | ||
4bfec483 NB |
1776 | /* Allow the front end to perform consistency checks and do further |
1777 | initialization based on the command line options. This hook also | |
1778 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
1779 | so we can correctly initialize debug output. */ | |
ae2bcd98 | 1780 | no_backend = lang_hooks.post_options (&main_input_filename); |
4bfec483 | 1781 | |
4291d9c8 RS |
1782 | #ifdef OVERRIDE_OPTIONS |
1783 | /* Some machines may reject certain combinations of options. */ | |
1784 | OVERRIDE_OPTIONS; | |
1785 | #endif | |
1786 | ||
aacd3885 RS |
1787 | if (flag_section_anchors && !target_supports_section_anchors_p ()) |
1788 | { | |
1789 | warning (OPT_fsection_anchors, | |
1790 | "this target does not support %qs", "-fsection-anchors"); | |
1791 | flag_section_anchors = 0; | |
1792 | } | |
1793 | ||
32770746 PB |
1794 | if (flag_short_enums == 2) |
1795 | flag_short_enums = targetm.default_short_enums (); | |
1796 | ||
b1cbe78c NB |
1797 | /* Set aux_base_name if not already set. */ |
1798 | if (aux_base_name) | |
1799 | ; | |
d7b42618 | 1800 | else if (main_input_filename) |
b1cbe78c | 1801 | { |
d7b42618 | 1802 | char *name = xstrdup (lbasename (main_input_filename)); |
e25a75e6 | 1803 | |
b1cbe78c NB |
1804 | strip_off_ending (name, strlen (name)); |
1805 | aux_base_name = name; | |
1806 | } | |
1807 | else | |
1808 | aux_base_name = "gccaux"; | |
1809 | ||
b70e9775 SP |
1810 | #ifndef HAVE_cloog |
1811 | if (flag_graphite | |
1812 | || flag_loop_block | |
1813 | || flag_loop_interchange | |
20ed8b32 | 1814 | || flag_loop_strip_mine |
204b560f | 1815 | || flag_graphite_identity |
3cf0e270 | 1816 | || flag_loop_parallelize_all) |
b70e9775 SP |
1817 | sorry ("Graphite loop optimizations cannot be used"); |
1818 | #endif | |
1819 | ||
4291d9c8 RS |
1820 | /* Unrolling all loops implies that standard loop unrolling must also |
1821 | be done. */ | |
1822 | if (flag_unroll_all_loops) | |
1823 | flag_unroll_loops = 1; | |
b17d5d7c | 1824 | |
7869fe47 | 1825 | /* The loop unrolling code assumes that cse will be run after loop. |
2928d0f8 SE |
1826 | web and rename-registers also help when run after loop unrolling. */ |
1827 | ||
1828 | if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
1829 | flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
1830 | if (flag_web == AUTODETECT_VALUE) | |
1831 | flag_web = flag_unroll_loops || flag_peel_loops; | |
1832 | if (flag_rename_registers == AUTODETECT_VALUE) | |
1833 | flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
4291d9c8 | 1834 | |
b932f770 JH |
1835 | if (flag_non_call_exceptions) |
1836 | flag_asynchronous_unwind_tables = 1; | |
1837 | if (flag_asynchronous_unwind_tables) | |
1838 | flag_unwind_tables = 1; | |
1839 | ||
fca9dc00 ZD |
1840 | if (flag_value_profile_transformations) |
1841 | flag_profile_values = 1; | |
1842 | ||
4291d9c8 RS |
1843 | /* Warn about options that are not supported on this machine. */ |
1844 | #ifndef INSN_SCHEDULING | |
1845 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
d4ee4d25 | 1846 | warning (0, "instruction scheduling not supported on this target machine"); |
4291d9c8 RS |
1847 | #endif |
1848 | #ifndef DELAY_SLOTS | |
1849 | if (flag_delayed_branch) | |
d4ee4d25 | 1850 | warning (0, "this target machine does not have delayed branches"); |
4291d9c8 RS |
1851 | #endif |
1852 | ||
19283265 RH |
1853 | user_label_prefix = USER_LABEL_PREFIX; |
1854 | if (flag_leading_underscore != -1) | |
1855 | { | |
854a97f0 | 1856 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
1857 | issue a warning and ignore this option. */ |
1858 | if (user_label_prefix[0] == 0 || | |
1859 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
1860 | { | |
1861 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
1862 | } | |
1863 | else | |
d4ee4d25 | 1864 | warning (0, "-f%sleading-underscore not supported on this target machine", |
19283265 RH |
1865 | flag_leading_underscore ? "" : "no-"); |
1866 | } | |
1867 | ||
4291d9c8 RS |
1868 | /* If we are in verbose mode, write out the version and maybe all the |
1869 | option flags in use. */ | |
1870 | if (version_flag) | |
1871 | { | |
3d5cdd42 | 1872 | print_version (stderr, ""); |
4291d9c8 | 1873 | if (! quiet_flag) |
e0d9d0dd | 1874 | print_switch_values (print_to_stderr); |
4291d9c8 RS |
1875 | } |
1876 | ||
f5e99456 NB |
1877 | if (flag_syntax_only) |
1878 | { | |
1879 | write_symbols = NO_DEBUG; | |
1880 | profile_flag = 0; | |
f5e99456 | 1881 | } |
4291d9c8 | 1882 | |
2153915d AO |
1883 | if (flag_gtoggle) |
1884 | { | |
1885 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1886 | debug_info_level = DINFO_LEVEL_NORMAL; | |
1887 | else | |
1888 | debug_info_level = DINFO_LEVEL_NONE; | |
1889 | } | |
1890 | ||
b5b8b0ac | 1891 | if (flag_dump_final_insns && !flag_syntax_only && !no_backend) |
2153915d AO |
1892 | { |
1893 | FILE *final_output = fopen (flag_dump_final_insns, "w"); | |
1894 | if (!final_output) | |
1895 | { | |
1896 | error ("could not open final insn dump file %qs: %s", | |
1897 | flag_dump_final_insns, strerror (errno)); | |
1898 | flag_dump_final_insns = NULL; | |
1899 | } | |
1900 | else if (fclose (final_output)) | |
1901 | { | |
1902 | error ("could not close zeroed insn dump file %qs: %s", | |
1903 | flag_dump_final_insns, strerror (errno)); | |
1904 | flag_dump_final_insns = NULL; | |
1905 | } | |
1906 | } | |
1907 | ||
df38ffef NB |
1908 | /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
1909 | level is 0. */ | |
1910 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1911 | write_symbols = NO_DEBUG; | |
1912 | ||
f5e99456 NB |
1913 | /* Now we know write_symbols, set up the debug hooks based on it. |
1914 | By default we do nothing for debug output. */ | |
38d396e5 PB |
1915 | if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) |
1916 | default_debug_hooks = &do_nothing_debug_hooks; | |
1917 | #if defined(DBX_DEBUGGING_INFO) | |
1918 | else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
1919 | default_debug_hooks = &dbx_debug_hooks; | |
1920 | #endif | |
1921 | #if defined(XCOFF_DEBUGGING_INFO) | |
1922 | else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
1923 | default_debug_hooks = &xcoff_debug_hooks; | |
1924 | #endif | |
1925 | #ifdef SDB_DEBUGGING_INFO | |
1926 | else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
1927 | default_debug_hooks = &sdb_debug_hooks; | |
1928 | #endif | |
1929 | #ifdef DWARF2_DEBUGGING_INFO | |
1930 | else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
1931 | default_debug_hooks = &dwarf2_debug_hooks; | |
1932 | #endif | |
1933 | #ifdef VMS_DEBUGGING_INFO | |
1934 | else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
1935 | || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
1936 | default_debug_hooks = &vmsdbg_debug_hooks; | |
1937 | #endif | |
1938 | ||
df38ffef | 1939 | if (write_symbols == NO_DEBUG) |
93415288 | 1940 | ; |
f5e99456 | 1941 | #if defined(DBX_DEBUGGING_INFO) |
df38ffef | 1942 | else if (write_symbols == DBX_DEBUG) |
f5e99456 | 1943 | debug_hooks = &dbx_debug_hooks; |
4291d9c8 | 1944 | #endif |
f5e99456 | 1945 | #if defined(XCOFF_DEBUGGING_INFO) |
df38ffef | 1946 | else if (write_symbols == XCOFF_DEBUG) |
f5e99456 | 1947 | debug_hooks = &xcoff_debug_hooks; |
3d5cdd42 | 1948 | #endif |
f5e99456 | 1949 | #ifdef SDB_DEBUGGING_INFO |
df38ffef | 1950 | else if (write_symbols == SDB_DEBUG) |
f5e99456 NB |
1951 | debug_hooks = &sdb_debug_hooks; |
1952 | #endif | |
f5e99456 | 1953 | #ifdef DWARF2_DEBUGGING_INFO |
df38ffef | 1954 | else if (write_symbols == DWARF2_DEBUG) |
f5e99456 | 1955 | debug_hooks = &dwarf2_debug_hooks; |
3d5cdd42 | 1956 | #endif |
7a0c8d71 | 1957 | #ifdef VMS_DEBUGGING_INFO |
df38ffef | 1958 | else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
7a0c8d71 DR |
1959 | debug_hooks = &vmsdbg_debug_hooks; |
1960 | #endif | |
df38ffef NB |
1961 | else |
1962 | error ("target system does not support the \"%s\" debug format", | |
1963 | debug_type_names[write_symbols]); | |
4291d9c8 | 1964 | |
014a1138 | 1965 | /* Now we know which debug output will be used so we can set |
21ef99b8 | 1966 | flag_var_tracking, flag_rename_registers if the user has |
38d396e5 PB |
1967 | not specified them. */ |
1968 | if (debug_info_level < DINFO_LEVEL_NORMAL | |
1969 | || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
014a1138 | 1970 | { |
62760ffd CT |
1971 | if (flag_var_tracking == 1 |
1972 | || flag_var_tracking_uninit == 1) | |
38d396e5 PB |
1973 | { |
1974 | if (debug_info_level < DINFO_LEVEL_NORMAL) | |
d4ee4d25 | 1975 | warning (0, "variable tracking requested, but useless unless " |
38d396e5 PB |
1976 | "producing debug info"); |
1977 | else | |
d4ee4d25 | 1978 | warning (0, "variable tracking requested, but not supported " |
38d396e5 PB |
1979 | "by this debug format"); |
1980 | } | |
1981 | flag_var_tracking = 0; | |
62760ffd | 1982 | flag_var_tracking_uninit = 0; |
014a1138 JZ |
1983 | } |
1984 | ||
2928d0f8 | 1985 | if (flag_rename_registers == AUTODETECT_VALUE) |
38d396e5 PB |
1986 | flag_rename_registers = default_debug_hooks->var_location |
1987 | != do_nothing_debug_hooks.var_location; | |
1988 | ||
2928d0f8 | 1989 | if (flag_var_tracking == AUTODETECT_VALUE) |
38d396e5 PB |
1990 | flag_var_tracking = optimize >= 1; |
1991 | ||
b5b8b0ac AO |
1992 | if (flag_var_tracking_assignments == AUTODETECT_VALUE) |
1993 | flag_var_tracking_assignments = 0; | |
1994 | ||
1995 | if (flag_var_tracking_assignments_toggle) | |
1996 | flag_var_tracking_assignments = !flag_var_tracking_assignments; | |
1997 | ||
1998 | if (flag_var_tracking_assignments && !flag_var_tracking) | |
1999 | flag_var_tracking = flag_var_tracking_assignments = -1; | |
2000 | ||
a5828d1e MM |
2001 | if (flag_tree_cselim == AUTODETECT_VALUE) |
2002 | #ifdef HAVE_conditional_move | |
2003 | flag_tree_cselim = 1; | |
2004 | #else | |
2005 | flag_tree_cselim = 0; | |
2006 | #endif | |
2007 | ||
62760ffd CT |
2008 | /* If the user specifically requested variable tracking with tagging |
2009 | uninitialized variables, we need to turn on variable tracking. | |
2010 | (We already determined above that variable tracking is feasible.) */ | |
2011 | if (flag_var_tracking_uninit) | |
2012 | flag_var_tracking = 1; | |
2013 | ||
f5e99456 NB |
2014 | /* If auxiliary info generation is desired, open the output file. |
2015 | This goes in the same directory as the source file--unlike | |
2016 | all the other output files. */ | |
2017 | if (flag_gen_aux_info) | |
2018 | { | |
2019 | aux_info_file = fopen (aux_info_file_name, "w"); | |
2020 | if (aux_info_file == 0) | |
971801ff | 2021 | fatal_error ("can%'t open %s: %m", aux_info_file_name); |
f5e99456 | 2022 | } |
309a8875 | 2023 | |
f5e99456 | 2024 | if (! targetm.have_named_sections) |
4291d9c8 | 2025 | { |
f5e99456 NB |
2026 | if (flag_function_sections) |
2027 | { | |
d4ee4d25 | 2028 | warning (0, "-ffunction-sections not supported for this target"); |
f5e99456 NB |
2029 | flag_function_sections = 0; |
2030 | } | |
2031 | if (flag_data_sections) | |
2032 | { | |
d4ee4d25 | 2033 | warning (0, "-fdata-sections not supported for this target"); |
f5e99456 NB |
2034 | flag_data_sections = 0; |
2035 | } | |
4291d9c8 | 2036 | } |
f5e99456 | 2037 | |
8456b95a | 2038 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 2039 | { |
d4ee4d25 | 2040 | warning (0, "-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 2041 | flag_function_sections = 0; |
3d5cdd42 | 2042 | } |
f5e99456 | 2043 | |
0dd0e980 JH |
2044 | #ifndef HAVE_prefetch |
2045 | if (flag_prefetch_loop_arrays) | |
2046 | { | |
d4ee4d25 | 2047 | warning (0, "-fprefetch-loop-arrays not supported for this target"); |
0dd0e980 JH |
2048 | flag_prefetch_loop_arrays = 0; |
2049 | } | |
2050 | #else | |
2051 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
2052 | { | |
d4ee4d25 | 2053 | warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); |
0dd0e980 JH |
2054 | flag_prefetch_loop_arrays = 0; |
2055 | } | |
2056 | #endif | |
2057 | ||
1398974c JJ |
2058 | /* This combination of options isn't handled for i386 targets and doesn't |
2059 | make much sense anyway, so don't allow it. */ | |
2060 | if (flag_prefetch_loop_arrays && optimize_size) | |
2061 | { | |
d4ee4d25 | 2062 | warning (0, "-fprefetch-loop-arrays is not supported with -Os"); |
1398974c JJ |
2063 | flag_prefetch_loop_arrays = 0; |
2064 | } | |
2065 | ||
6de9cd9a DN |
2066 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ |
2067 | if (flag_signaling_nans) | |
2068 | flag_trapping_math = 1; | |
c7463669 | 2069 | |
204b560f | 2070 | /* We cannot reassociate if we want traps or signed zeros. */ |
c5edab65 EB |
2071 | if (flag_associative_math && (flag_trapping_math || flag_signed_zeros)) |
2072 | { | |
2073 | warning (0, "-fassociative-math disabled; other options take precedence"); | |
2074 | flag_associative_math = 0; | |
2075 | } | |
2076 | ||
c7463669 RH |
2077 | /* With -fcx-limited-range, we do cheap and quick complex arithmetic. */ |
2078 | if (flag_cx_limited_range) | |
2079 | flag_complex_method = 0; | |
7d69de61 | 2080 | |
35085f76 JB |
2081 | /* With -fcx-fortran-rules, we do something in-between cheap and C99. */ |
2082 | if (flag_cx_fortran_rules) | |
2083 | flag_complex_method = 1; | |
2084 | ||
7d69de61 RH |
2085 | /* Targets must be able to place spill slots at lower addresses. If the |
2086 | target already uses a soft frame pointer, the transition is trivial. */ | |
fd5431bc | 2087 | if (!FRAME_GROWS_DOWNWARD && flag_stack_protect) |
7d69de61 RH |
2088 | { |
2089 | warning (0, "-fstack-protector not supported for this target"); | |
2090 | flag_stack_protect = 0; | |
2091 | } | |
7d69de61 RH |
2092 | if (!flag_stack_protect) |
2093 | warn_stack_protect = 0; | |
d3073c70 RH |
2094 | |
2095 | /* ??? Unwind info is not correct around the CFG unless either a frame | |
2096 | pointer is present or A_O_A is set. Fixing this requires rewriting | |
2097 | unwind info generation to be aware of the CFG and propagating states | |
2098 | around edges. */ | |
2099 | if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS | |
2100 | && flag_omit_frame_pointer) | |
2101 | { | |
772cf067 | 2102 | warning (0, "unwind tables currently require a frame pointer " |
d3073c70 RH |
2103 | "for correctness"); |
2104 | flag_omit_frame_pointer = 0; | |
2105 | } | |
4291d9c8 | 2106 | } |
ddc9542b | 2107 | |
b5deb7b6 SL |
2108 | /* This function can be called multiple times to reinitialize the compiler |
2109 | back end when register classes or instruction sets have changed, | |
2110 | before each function. */ | |
2111 | static void | |
2112 | backend_init_target (void) | |
2113 | { | |
2114 | /* Initialize alignment variables. */ | |
2115 | init_alignments (); | |
2116 | ||
2117 | /* This reinitializes hard_frame_pointer, and calls init_reg_modes_target() | |
2118 | to initialize reg_raw_mode[]. */ | |
2119 | init_emit_regs (); | |
2120 | ||
2121 | /* This invokes target hooks to set fixed_reg[] etc, which is | |
2122 | mode-dependent. */ | |
2123 | init_regs (); | |
2124 | ||
2125 | /* This depends on stack_pointer_rtx. */ | |
2126 | init_fake_stack_mems (); | |
2127 | ||
2128 | /* Sets static_base_value[HARD_FRAME_POINTER_REGNUM], which is | |
2129 | mode-dependent. */ | |
2130 | init_alias_target (); | |
2131 | ||
2132 | /* Depends on HARD_FRAME_POINTER_REGNUM. */ | |
2133 | init_reload (); | |
2134 | ||
2135 | /* The following initialization functions need to generate rtl, so | |
2136 | provide a dummy function context for them. */ | |
2137 | init_dummy_function_start (); | |
2138 | ||
2139 | /* rtx_cost is mode-dependent, so cached values need to be recomputed | |
2140 | on a mode change. */ | |
2141 | init_expmed (); | |
2142 | ||
2143 | /* We may need to recompute regno_save_code[] and regno_restore_code[] | |
2144 | after a mode change as well. */ | |
2145 | if (flag_caller_saves) | |
2146 | init_caller_save (); | |
2147 | expand_dummy_function_end (); | |
2148 | } | |
2149 | ||
2150 | /* Initialize the compiler back end. This function is called only once, | |
2151 | when starting the compiler. */ | |
f5e99456 | 2152 | static void |
e25a75e6 | 2153 | backend_init (void) |
f5e99456 | 2154 | { |
f5e99456 NB |
2155 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
2156 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
7a0c8d71 | 2157 | #ifdef VMS_DEBUGGING_INFO |
f9da5064 | 2158 | /* Enable line number info for traceback. */ |
7a0c8d71 DR |
2159 | || debug_info_level > DINFO_LEVEL_NONE |
2160 | #endif | |
165b54c3 | 2161 | || flag_test_coverage); |
28420116 | 2162 | |
cf94b0fc | 2163 | init_rtlanal (); |
7f9bc51b | 2164 | init_inline_once (); |
f5e99456 | 2165 | init_varasm_once (); |
fef511b5 | 2166 | save_register_info (); |
f5e99456 | 2167 | |
b5deb7b6 | 2168 | /* Initialize the target-specific back end pieces. */ |
058e97ec | 2169 | ira_init_once (); |
b5deb7b6 SL |
2170 | backend_init_target (); |
2171 | } | |
2172 | ||
8ce94e44 JM |
2173 | /* Initialize excess precision settings. */ |
2174 | static void | |
2175 | init_excess_precision (void) | |
2176 | { | |
2177 | /* Adjust excess precision handling based on the target options. If | |
2178 | the front end cannot handle it, flag_excess_precision_cmdline | |
2179 | will already have been set accordingly in the post_options | |
2180 | hook. */ | |
2181 | gcc_assert (flag_excess_precision_cmdline != EXCESS_PRECISION_DEFAULT); | |
2182 | flag_excess_precision = flag_excess_precision_cmdline; | |
2183 | if (flag_unsafe_math_optimizations) | |
2184 | flag_excess_precision = EXCESS_PRECISION_FAST; | |
2185 | if (flag_excess_precision == EXCESS_PRECISION_STANDARD) | |
2186 | { | |
2187 | int flt_eval_method = TARGET_FLT_EVAL_METHOD; | |
2188 | switch (flt_eval_method) | |
2189 | { | |
2190 | case -1: | |
2191 | case 0: | |
2192 | /* Either the target acts unpredictably (-1) or has all the | |
2193 | operations required not to have excess precision (0). */ | |
2194 | flag_excess_precision = EXCESS_PRECISION_FAST; | |
2195 | break; | |
2196 | case 1: | |
2197 | case 2: | |
2198 | /* In these cases, predictable excess precision makes | |
2199 | sense. */ | |
2200 | break; | |
2201 | default: | |
2202 | /* Any other implementation-defined FLT_EVAL_METHOD values | |
2203 | require the compiler to handle the associated excess | |
2204 | precision rules in excess_precision_type. */ | |
2205 | gcc_unreachable (); | |
2206 | } | |
2207 | } | |
2208 | } | |
2209 | ||
b5deb7b6 SL |
2210 | /* Initialize things that are both lang-dependent and target-dependent. |
2211 | This function can be called more than once if target parameters change. */ | |
2212 | static void | |
2213 | lang_dependent_init_target (void) | |
2214 | { | |
8ce94e44 JM |
2215 | /* This determines excess precision settings. */ |
2216 | init_excess_precision (); | |
2217 | ||
b5deb7b6 SL |
2218 | /* This creates various _DECL nodes, so needs to be called after the |
2219 | front end is initialized. It also depends on the HAVE_xxx macros | |
2220 | generated from the target machine description. */ | |
2221 | init_optabs (); | |
2222 | ||
f5e99456 NB |
2223 | /* The following initialization functions need to generate rtl, so |
2224 | provide a dummy function context for them. */ | |
2225 | init_dummy_function_start (); | |
b5deb7b6 SL |
2226 | |
2227 | /* Do the target-specific parts of expr initialization. */ | |
2228 | init_expr_target (); | |
2229 | ||
058e97ec VM |
2230 | /* Although the actions of these functions are language-independent, |
2231 | they use optabs, so we cannot call them from backend_init. */ | |
b5deb7b6 | 2232 | init_set_costs (); |
058e97ec | 2233 | ira_init (); |
b5deb7b6 | 2234 | |
f5e99456 NB |
2235 | expand_dummy_function_end (); |
2236 | } | |
ddc9542b | 2237 | |
0e9e1e0a | 2238 | /* Language-dependent initialization. Returns nonzero on success. */ |
22703ccc | 2239 | static int |
e25a75e6 | 2240 | lang_dependent_init (const char *name) |
4291d9c8 | 2241 | { |
c1667470 | 2242 | location_t save_loc = input_location; |
f5e99456 | 2243 | if (dump_base_name == 0) |
9f8628ba | 2244 | dump_base_name = name && name[0] ? name : "gccdump"; |
26182e15 | 2245 | |
4bfec483 | 2246 | /* Other front-end initialization. */ |
c1667470 | 2247 | input_location = BUILTINS_LOCATION; |
ae2bcd98 | 2248 | if (lang_hooks.init () == 0) |
22703ccc | 2249 | return 0; |
c1667470 | 2250 | input_location = save_loc; |
4291d9c8 | 2251 | |
f5e99456 | 2252 | init_asm_output (name); |
3d5cdd42 | 2253 | |
b5deb7b6 | 2254 | /* This creates various _DECL nodes, so needs to be called after the |
f5e99456 NB |
2255 | front end is initialized. */ |
2256 | init_eh (); | |
c0d919fa | 2257 | |
b5deb7b6 SL |
2258 | /* Do the target-specific parts of the initialization. */ |
2259 | lang_dependent_init_target (); | |
3d5cdd42 | 2260 | |
f5e99456 NB |
2261 | /* If dbx symbol table desired, initialize writing it and output the |
2262 | predefined types. */ | |
2263 | timevar_push (TV_SYMOUT); | |
4291d9c8 | 2264 | |
658f32fd | 2265 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
f5e99456 NB |
2266 | if (dwarf2out_do_frame ()) |
2267 | dwarf2out_frame_init (); | |
2268 | #endif | |
4291d9c8 | 2269 | |
f5e99456 NB |
2270 | /* Now we have the correct original filename, we can initialize |
2271 | debug output. */ | |
2272 | (*debug_hooks->init) (name); | |
4291d9c8 | 2273 | |
f5e99456 | 2274 | timevar_pop (TV_SYMOUT); |
22703ccc NB |
2275 | |
2276 | return 1; | |
2277 | } | |
ddc9542b | 2278 | |
b5deb7b6 SL |
2279 | |
2280 | /* Reinitialize everything when target parameters, such as register usage, | |
2281 | have changed. */ | |
2282 | void | |
2283 | target_reinit (void) | |
2284 | { | |
84fbffb2 | 2285 | /* Reinitialize RTL backend. */ |
b5deb7b6 SL |
2286 | backend_init_target (); |
2287 | ||
2288 | /* Reinitialize lang-dependent parts. */ | |
2289 | lang_dependent_init_target (); | |
2290 | } | |
2291 | ||
a5573239 JH |
2292 | void |
2293 | dump_memory_report (bool final) | |
2294 | { | |
2295 | ggc_print_statistics (); | |
2296 | stringpool_statistics (); | |
2297 | dump_tree_statistics (); | |
726a989a | 2298 | dump_gimple_statistics (); |
a5573239 JH |
2299 | dump_rtx_statistics (); |
2300 | dump_varray_statistics (); | |
2301 | dump_alloc_pool_statistics (); | |
2302 | dump_bitmap_statistics (); | |
d3492572 | 2303 | dump_vec_loc_statistics (); |
a5573239 | 2304 | dump_ggc_loc_statistics (final); |
5006671f RG |
2305 | dump_alias_stats (stderr); |
2306 | dump_pta_stats (stderr); | |
a5573239 JH |
2307 | } |
2308 | ||
22703ccc NB |
2309 | /* Clean up: close opened files, etc. */ |
2310 | ||
2311 | static void | |
e25a75e6 | 2312 | finalize (void) |
22703ccc NB |
2313 | { |
2314 | /* Close the dump files. */ | |
2315 | if (flag_gen_aux_info) | |
2316 | { | |
2317 | fclose (aux_info_file); | |
2318 | if (errorcount) | |
2319 | unlink (aux_info_file_name); | |
2320 | } | |
2321 | ||
2322 | /* Close non-debugging input and output files. Take special care to note | |
2323 | whether fclose returns an error, since the pages might still be on the | |
2324 | buffer chain while the file is open. */ | |
2325 | ||
2326 | if (asm_out_file) | |
2327 | { | |
2328 | if (ferror (asm_out_file) != 0) | |
fa6ef813 | 2329 | fatal_error ("error writing to %s: %m", asm_file_name); |
22703ccc | 2330 | if (fclose (asm_out_file) != 0) |
fa6ef813 | 2331 | fatal_error ("error closing %s: %m", asm_file_name); |
22703ccc NB |
2332 | } |
2333 | ||
9fe0cb7d | 2334 | statistics_fini (); |
f6db1481 | 2335 | finish_optimization_passes (); |
22703ccc | 2336 | |
058e97ec VM |
2337 | ira_finish_once (); |
2338 | ||
22703ccc | 2339 | if (mem_report) |
a5573239 | 2340 | dump_memory_report (true); |
22703ccc | 2341 | |
22703ccc | 2342 | /* Language-specific end of compilation actions. */ |
ae2bcd98 | 2343 | lang_hooks.finish (); |
f5e99456 | 2344 | } |
ddc9542b | 2345 | |
4d6baafa NB |
2346 | /* Initialize the compiler, and compile the input file. */ |
2347 | static void | |
e25a75e6 | 2348 | do_compile (void) |
f5e99456 | 2349 | { |
09b04f2d NB |
2350 | /* Initialize timing first. The C front ends read the main file in |
2351 | the post_options hook, and C++ does file timings. */ | |
2352 | if (time_report || !quiet_flag || flag_detailed_statistics) | |
2353 | timevar_init (); | |
a9915c78 RK |
2354 | timevar_start (TV_TOTAL); |
2355 | ||
09b04f2d NB |
2356 | process_options (); |
2357 | ||
2358 | /* Don't do any more if an error has already occurred. */ | |
2359 | if (!errorcount) | |
2360 | { | |
e59ba1bc JW |
2361 | /* This must be run always, because it is needed to compute the FP |
2362 | predefined macros, such as __LDBL_MAX__, for targets using non | |
2363 | default FP formats. */ | |
2364 | init_adjust_machine_modes (); | |
2365 | ||
09b04f2d NB |
2366 | /* Set up the back-end if requested. */ |
2367 | if (!no_backend) | |
2368 | backend_init (); | |
f5e99456 | 2369 | |
09b04f2d | 2370 | /* Language-dependent initialization. Returns true on success. */ |
d7b42618 | 2371 | if (lang_dependent_init (main_input_filename)) |
f6db1481 | 2372 | compile_file (); |
a194aa56 | 2373 | |
09b04f2d NB |
2374 | finalize (); |
2375 | } | |
f5e99456 NB |
2376 | |
2377 | /* Stop timing and print the times. */ | |
2378 | timevar_stop (TV_TOTAL); | |
2379 | timevar_print (stderr); | |
4d6baafa | 2380 | } |
ddc9542b | 2381 | |
4d6baafa | 2382 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
4d6baafa NB |
2383 | Exit code is FATAL_EXIT_CODE if can't open files or if there were |
2384 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
2385 | ||
2386 | It is not safe to call this function more than once. */ | |
2387 | ||
2388 | int | |
5a691e98 | 2389 | toplev_main (int argc, char **argv) |
4d6baafa | 2390 | { |
5a691e98 RAE |
2391 | expandargv (&argc, &argv); |
2392 | ||
67165eb3 | 2393 | save_argv = CONST_CAST2 (const char **, char **, argv); |
b86f6cd9 | 2394 | |
4d6baafa | 2395 | /* Initialization of GCC's environment, and diagnostics. */ |
9cabb1d8 | 2396 | general_init (argv[0]); |
4d6baafa NB |
2397 | |
2398 | /* Parse the options and do minimal processing; basically just | |
2399 | enough to default flags appropriately. */ | |
67165eb3 | 2400 | decode_options (argc, CONST_CAST2 (const char **, char **, argv)); |
4d6baafa | 2401 | |
403d4851 | 2402 | init_local_tick (); |
c07e5477 | 2403 | |
44e9f006 RAE |
2404 | initialize_plugins (); |
2405 | ||
2406 | if (version_flag) | |
2407 | print_version (stderr, ""); | |
2408 | ||
02e819ff RAE |
2409 | if (help_flag) |
2410 | print_plugins_help (stderr, ""); | |
2411 | ||
4d6baafa | 2412 | /* Exit early if we can (e.g. -help). */ |
c79043f3 | 2413 | if (!exit_after_options) |
09b04f2d | 2414 | do_compile (); |
f5e99456 | 2415 | |
369dcbd9 MLI |
2416 | if (warningcount || errorcount) |
2417 | print_ignored_options (); | |
2418 | ||
68a607d8 DN |
2419 | /* Invoke registered plugin callbacks if any. */ |
2420 | invoke_plugin_callbacks (PLUGIN_FINISH, NULL); | |
2421 | ||
44e9f006 | 2422 | finalize_plugins (); |
f5e99456 NB |
2423 | if (errorcount || sorrycount) |
2424 | return (FATAL_EXIT_CODE); | |
2425 | ||
2426 | return (SUCCESS_EXIT_CODE); | |
4291d9c8 | 2427 | } |