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bccafa26 | 1 | /* Top level of GCC compilers (cc1, cc1plus, etc.) |
b86e0f5c | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
9c85a98a | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
3d7c33fe | 4 | Free Software Foundation, Inc. |
3bcb26d1 | 5 | |
f12b58b3 | 6 | This file is part of GCC. |
3bcb26d1 | 7 | |
f12b58b3 | 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 | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 11 | version. |
3bcb26d1 | 12 | |
f12b58b3 | 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. | |
3bcb26d1 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
3bcb26d1 | 21 | |
3bcb26d1 | 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" | |
405711de | 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" | |
805e22b2 | 31 | #include "coretypes.h" |
32 | #include "tm.h" | |
3bcb26d1 | 33 | #include <signal.h> |
ad87de1e | 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> | |
0dfdfa9f | 41 | #endif |
3bcb26d1 | 42 | |
de269355 | 43 | #include "line-map.h" |
3bcb26d1 | 44 | #include "input.h" |
45 | #include "tree.h" | |
af225e7d | 46 | #include "version.h" |
3bcb26d1 | 47 | #include "rtl.h" |
7953c610 | 48 | #include "tm_p.h" |
3bcb26d1 | 49 | #include "flags.h" |
50 | #include "insn-attr.h" | |
997d68fe | 51 | #include "insn-config.h" |
ba38e12b | 52 | #include "insn-flags.h" |
3e9f1237 | 53 | #include "hard-reg-set.h" |
997d68fe | 54 | #include "recog.h" |
1ff68c01 | 55 | #include "output.h" |
037a5228 | 56 | #include "except.h" |
0a893c29 | 57 | #include "function.h" |
c3ab7bd5 | 58 | #include "toplev.h" |
74273693 | 59 | #include "expr.h" |
e81f50db | 60 | #include "basic-block.h" |
be2828ce | 61 | #include "intl.h" |
05513b45 | 62 | #include "ggc.h" |
e5bd1365 | 63 | #include "graph.h" |
5d0e87b7 | 64 | #include "regs.h" |
74d2af64 | 65 | #include "timevar.h" |
990339dd | 66 | #include "diagnostic.h" |
9a33a2e8 | 67 | #include "params.h" |
75eb327c | 68 | #include "reload.h" |
47dd2e78 | 69 | #include "ira.h" |
8a34c73b | 70 | #include "dwarf2asm.h" |
fb0c0ea7 | 71 | #include "integrate.h" |
aa870c1b | 72 | #include "real.h" |
b896d81b | 73 | #include "debug.h" |
2cb4ac60 | 74 | #include "target.h" |
b0278d39 | 75 | #include "langhooks.h" |
29cc5ce8 | 76 | #include "cfglayout.h" |
862be747 | 77 | #include "cfgloop.h" |
b197fbcf | 78 | #include "hosthooks.h" |
28992b23 | 79 | #include "cgraph.h" |
5457b645 | 80 | #include "opts.h" |
a0ed384d | 81 | #include "coverage.h" |
1c6a7b8c | 82 | #include "value-prof.h" |
15ac28e3 | 83 | #include "alloc-pool.h" |
e68ba323 | 84 | #include "tree-mudflap.h" |
b4c01899 | 85 | #include "tree-pass.h" |
75a70cf9 | 86 | #include "gimple.h" |
dd277d48 | 87 | #include "tree-ssa-alias.h" |
9227b6fc | 88 | #include "plugin.h" |
e3a24b9a | 89 | |
744d3441 | 90 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
91 | #include "dwarf2out.h" | |
92 | #endif | |
93 | ||
02da6382 | 94 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
744d3441 | 95 | #include "dbxout.h" |
96 | #endif | |
97 | ||
98 | #ifdef SDB_DEBUGGING_INFO | |
99 | #include "sdbout.h" | |
100 | #endif | |
397c7bc7 | 101 | |
102 | #ifdef XCOFF_DEBUGGING_INFO | |
103 | #include "xcoffout.h" /* Needed for external data | |
104 | declarations for e.g. AIX 4.x. */ | |
105 | #endif | |
03414cfb | 106 | |
4838a8b6 | 107 | static void general_init (const char *); |
7237deda | 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 | ||
7237deda | 115 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
116 | static void setup_core_dumping (void); | |
117 | static void compile_file (void); | |
7237deda | 118 | |
1c542e4c | 119 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
120 | static int set_yydebug; | |
121 | ||
03bde601 | 122 | /* True if we don't need a backend (e.g. preprocessing only). */ |
123 | static bool no_backend; | |
124 | ||
e87e2aa9 | 125 | /* Length of line when printing switch values. */ |
126 | #define MAX_LINE 75 | |
127 | ||
3bcb26d1 | 128 | /* Name of program invoked, sans directories. */ |
129 | ||
9ea83430 | 130 | const char *progname; |
3bcb26d1 | 131 | |
4838a8b6 | 132 | /* Copy of argument vector to toplev_main. */ |
133 | static const char **save_argv; | |
03414cfb | 134 | |
3bcb26d1 | 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 | ||
e772a198 | 139 | const char *main_input_filename; |
3bcb26d1 | 140 | |
ad469377 | 141 | /* Used to enable -fvar-tracking, -fweb and -frename-registers according |
142 | to optimize and default_debug_hooks in process_options (). */ | |
472cd78a | 143 | #define AUTODETECT_VALUE 2 |
ad469377 | 144 | |
5a8a92a0 | 145 | /* Current position in real source file. */ |
3bcb26d1 | 146 | |
5a8a92a0 | 147 | location_t input_location; |
3bcb26d1 | 148 | |
931b0a0f | 149 | struct line_maps *line_table; |
ceec9c13 | 150 | |
3bcb26d1 | 151 | /* Name to use as base of names for dump output files. */ |
152 | ||
951f0f62 | 153 | const char *dump_base_name; |
3bcb26d1 | 154 | |
d036315f | 155 | /* Name to use as a base for auxiliary output files. */ |
156 | ||
e690b385 | 157 | const char *aux_base_name; |
d036315f | 158 | |
3e3a0e9c | 159 | /* Prefix for profile data files */ |
160 | const char *profile_data_prefix; | |
161 | ||
5153cc32 | 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 | ||
b896d81b | 167 | /* Debug hooks - dependent upon command line options. */ |
168 | ||
b0e56fb1 | 169 | const struct gcc_debug_hooks *debug_hooks; |
b896d81b | 170 | |
ad469377 | 171 | /* Debug hooks - target default. */ |
172 | ||
173 | static const struct gcc_debug_hooks *default_debug_hooks; | |
174 | ||
713a4057 | 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; | |
3eaf50a4 | 179 | enum graph_dump_types graph_dump_format; |
3bcb26d1 | 180 | |
181 | /* Name for output file of assembly code, specified with -o. */ | |
182 | ||
e690b385 | 183 | const char *asm_file_name; |
3bcb26d1 | 184 | |
3bcb26d1 | 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 | ||
57361983 | 194 | /* Nonzero means optimize for size. -Os. |
f712a0dc | 195 | The only valid values are zero and nonzero. When optimize_size is |
196 | nonzero, optimize defaults to 2, but certain individual code | |
57361983 | 197 | bloating optimizations are disabled. */ |
198 | ||
199 | int optimize_size = 0; | |
200 | ||
d0309f39 | 201 | /* The FUNCTION_DECL for the function currently being compiled, |
202 | or 0 if between functions. */ | |
203 | tree current_function_decl; | |
204 | ||
2d754264 | 205 | /* Set to the FUNC_BEGIN label of the current function, or NULL |
d0309f39 | 206 | if none. */ |
2d754264 | 207 | const char * current_function_func_begin_label; |
d0309f39 | 208 | |
a8b24921 | 209 | /* Nonzero means to collect statistics which might be expensive |
518796ad | 210 | and to print them when we are done. */ |
211 | int flag_detailed_statistics = 0; | |
212 | ||
81d47035 | 213 | /* A random sequence of characters, unless overridden by user. */ |
b6c1bd72 | 214 | static const char *flag_random_seed; |
b80f1d67 | 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 | ||
3bcb26d1 | 221 | /* -f flags. */ |
222 | ||
223 | /* Nonzero means `char' should be signed. */ | |
224 | ||
225 | int flag_signed_char; | |
226 | ||
5bf3fee3 | 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. */ | |
3bcb26d1 | 229 | |
230 | int flag_short_enums; | |
231 | ||
557a6af6 | 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 | ||
3bcb26d1 | 241 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
242 | ||
557a6af6 | 243 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
3bcb26d1 | 244 | |
27bc6aee | 245 | /* 0 means straightforward implementation of complex divide acceptable. |
246 | 1 means wide ranges of inputs must work for complex divide. | |
0dfc45b5 | 247 | 2 means C99-like requirements for complex multiply and divide. */ |
27bc6aee | 248 | |
45b9d334 | 249 | int flag_complex_method = 1; |
27bc6aee | 250 | |
3bcb26d1 | 251 | /* Nonzero means we should be saving declaration info into a .X file. */ |
252 | ||
253 | int flag_gen_aux_info = 0; | |
254 | ||
e3a24b9a | 255 | /* Specified name of aux-info file. */ |
256 | ||
e690b385 | 257 | const char *aux_info_file_name; |
e3a24b9a | 258 | |
c3ce66b0 | 259 | /* Nonzero if we are compiling code for a shared library, zero for |
260 | executable. */ | |
261 | ||
262 | int flag_shlib; | |
263 | ||
66575a0b | 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 | ||
2a6f0f81 | 272 | /* Set to the default thread-local storage (tls) model to use. */ |
273 | ||
d595210a | 274 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
2a6f0f81 | 275 | |
14792f4e | 276 | /* Set the default region and algorithm for the integrated register |
277 | allocator. */ | |
47dd2e78 | 278 | |
14792f4e | 279 | enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB; |
280 | enum ira_region flag_ira_region = IRA_REGION_MIXED; | |
47dd2e78 | 281 | |
282 | /* Set the default value for -fira-verbose. */ | |
283 | ||
284 | unsigned int flag_ira_verbose = 5; | |
285 | ||
c6418a4e | 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 | ||
3bcb26d1 | 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 | ||
07317e69 | 296 | /* Nonzero means make permerror produce warnings instead of errors. */ |
297 | ||
298 | int flag_permissive = 0; | |
299 | ||
e87e2aa9 | 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; | |
88ef61d1 | 308 | |
af5e5fd0 | 309 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
310 | ||
311 | int flag_dump_rtl_in_asm = 0; | |
312 | ||
8f8ac140 | 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 | ||
5923a5e7 | 322 | /* Nonzero if we should track variables. When |
472cd78a | 323 | flag_var_tracking == AUTODETECT_VALUE it will be set according |
5923a5e7 | 324 | to optimize, debug_info_level and debug_hooks in process_options (). */ |
472cd78a | 325 | int flag_var_tracking = AUTODETECT_VALUE; |
5923a5e7 | 326 | |
4852b829 | 327 | /* Type of stack check. */ |
328 | enum stack_check_type flag_stack_check = NO_STACK_CHECK; | |
329 | ||
065efcb1 | 330 | /* True if the user has tagged the function with the 'section' |
331 | attribute. */ | |
332 | ||
333 | bool user_defined_section_attribute = false; | |
334 | ||
89a75961 | 335 | /* Values of the -falign-* flags: how much to align labels in code. |
336 | 0 means `use default', 1 means `don't align'. | |
61e95947 | 337 | For each variable, there is an _log variant which is the power |
338 | of two not less than the variable, for .align output. */ | |
339 | ||
61e95947 | 340 | int align_loops_log; |
93429286 | 341 | int align_loops_max_skip; |
61e95947 | 342 | int align_jumps_log; |
93429286 | 343 | int align_jumps_max_skip; |
61e95947 | 344 | int align_labels_log; |
93429286 | 345 | int align_labels_max_skip; |
61e95947 | 346 | int align_functions_log; |
347 | ||
8ace789a | 348 | typedef struct |
349 | { | |
33b57a7b | 350 | const char *const string; |
351 | int *const variable; | |
352 | const int on_value; | |
8ace789a | 353 | } |
354 | lang_independent_options; | |
355 | ||
3541e113 | 356 | /* Nonzero if subexpressions must be evaluated from left-to-right. */ |
357 | int flag_evaluation_order = 0; | |
358 | ||
95c4b02a | 359 | /* The user symbol prefix after having resolved same. */ |
951f0f62 | 360 | const char *user_label_prefix; |
95c4b02a | 361 | |
9a33a2e8 | 362 | static const param_info lang_independent_params[] = { |
1d8a53f4 | 363 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ |
07804af5 | 364 | { OPTION, DEFAULT, false, MIN, MAX, HELP }, |
9a33a2e8 | 365 | #include "params.def" |
366 | #undef DEFPARAM | |
07804af5 | 367 | { NULL, 0, false, 0, 0, NULL } |
9a33a2e8 | 368 | }; |
369 | ||
3bcb26d1 | 370 | /* Output files for assembler code (real compiler output) |
371 | and debugging dumps. */ | |
372 | ||
373 | FILE *asm_out_file; | |
374 | FILE *aux_info_file; | |
450d042a | 375 | FILE *dump_file = NULL; |
04625615 | 376 | const char *dump_file_name; |
3bcb26d1 | 377 | |
e7aa92b2 | 378 | /* The current working directory of a translation. It's generally the |
379 | directory from which compilation was initiated, but a preprocessed | |
380 | file may specify the original directory in which it was | |
381 | created. */ | |
382 | ||
383 | static const char *src_pwd; | |
384 | ||
385 | /* Initialize src_pwd with the given string, and return true. If it | |
386 | was already initialized, return false. As a special case, it may | |
387 | be called with a NULL argument to test whether src_pwd has NOT been | |
388 | initialized yet. */ | |
389 | ||
390 | bool | |
391 | set_src_pwd (const char *pwd) | |
392 | { | |
393 | if (src_pwd) | |
dc1dd09b | 394 | { |
395 | if (strcmp (src_pwd, pwd) == 0) | |
396 | return true; | |
397 | else | |
398 | return false; | |
399 | } | |
e7aa92b2 | 400 | |
401 | src_pwd = xstrdup (pwd); | |
402 | return true; | |
403 | } | |
404 | ||
405 | /* Return the directory from which the translation unit was initiated, | |
406 | in case set_src_pwd() was not called before to assign it a | |
407 | different value. */ | |
408 | ||
409 | const char * | |
410 | get_src_pwd (void) | |
411 | { | |
412 | if (! src_pwd) | |
8bc418a1 | 413 | { |
414 | src_pwd = getpwd (); | |
415 | if (!src_pwd) | |
416 | src_pwd = "."; | |
417 | } | |
e7aa92b2 | 418 | |
419 | return src_pwd; | |
420 | } | |
421 | ||
53d712d9 | 422 | /* Called when the start of a function definition is parsed, |
423 | this function prints on stderr the name of the function. */ | |
424 | void | |
425 | announce_function (tree decl) | |
426 | { | |
427 | if (!quiet_flag) | |
428 | { | |
429 | if (rtl_dump_and_exit) | |
abd3e6b5 | 430 | fprintf (stderr, "%s ", |
431 | identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
53d712d9 | 432 | else |
abd3e6b5 | 433 | fprintf (stderr, " %s", |
434 | identifier_to_locale (lang_hooks.decl_printable_name (decl, 2))); | |
53d712d9 | 435 | fflush (stderr); |
436 | pp_needs_newline (global_dc->printer) = true; | |
b8c23db3 | 437 | diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL); |
53d712d9 | 438 | } |
439 | } | |
440 | ||
b6c1bd72 | 441 | /* Initialize local_tick with the time of day, or -1 if |
442 | flag_random_seed is set. */ | |
b80f1d67 | 443 | |
444 | static void | |
b6c1bd72 | 445 | init_local_tick (void) |
b80f1d67 | 446 | { |
447 | if (!flag_random_seed) | |
448 | { | |
b80f1d67 | 449 | /* Get some more or less random data. */ |
450 | #ifdef HAVE_GETTIMEOFDAY | |
451 | { | |
b6c1bd72 | 452 | struct timeval tv; |
7e614678 | 453 | |
b6c1bd72 | 454 | gettimeofday (&tv, NULL); |
b80f1d67 | 455 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
456 | } | |
457 | #else | |
458 | { | |
c48e08ab | 459 | time_t now = time (NULL); |
b80f1d67 | 460 | |
461 | if (now != (time_t)-1) | |
462 | local_tick = (unsigned) now; | |
463 | } | |
464 | #endif | |
b80f1d67 | 465 | } |
b6c1bd72 | 466 | else |
b80f1d67 | 467 | local_tick = -1; |
468 | } | |
469 | ||
b6c1bd72 | 470 | /* Set up a default flag_random_seed and local_tick, unless the user |
471 | already specified one. Must be called after init_local_tick. */ | |
472 | ||
473 | static void | |
474 | init_random_seed (void) | |
475 | { | |
476 | unsigned HOST_WIDE_INT value; | |
477 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
478 | ||
479 | value = local_tick ^ getpid (); | |
480 | ||
481 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
482 | flag_random_seed = random_seed; | |
483 | } | |
484 | ||
485 | /* Obtain the random_seed string. Unless NOINIT, initialize it if | |
486 | it's not provided in the command line. */ | |
487 | ||
488 | const char * | |
489 | get_random_seed (bool noinit) | |
490 | { | |
491 | if (!flag_random_seed && !noinit) | |
492 | init_random_seed (); | |
493 | return flag_random_seed; | |
494 | } | |
495 | ||
496 | /* Modify the random_seed string to VAL. Return its previous | |
497 | value. */ | |
498 | ||
499 | const char * | |
500 | set_random_seed (const char *val) | |
501 | { | |
502 | const char *old = flag_random_seed; | |
503 | flag_random_seed = val; | |
504 | return old; | |
505 | } | |
b80f1d67 | 506 | |
4a665e20 | 507 | /* Decode the string P as an integral parameter. |
508 | If the string is indeed an integer return its numeric value else | |
caeb0249 | 509 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
89a75961 | 510 | If PNAME is zero just return DEFVAL, do not call error. */ |
511 | ||
4a665e20 | 512 | int |
7237deda | 513 | read_integral_parameter (const char *p, const char *pname, const int defval) |
4a665e20 | 514 | { |
caeb0249 | 515 | const char *endp = p; |
4a665e20 | 516 | |
517 | while (*endp) | |
518 | { | |
66a33570 | 519 | if (ISDIGIT (*endp)) |
4a665e20 | 520 | endp++; |
521 | else | |
caeb0249 | 522 | break; |
523 | } | |
524 | ||
525 | if (*endp != 0) | |
526 | { | |
527 | if (pname != 0) | |
eb586f2c | 528 | error ("invalid option argument %qs", pname); |
caeb0249 | 529 | return defval; |
4a665e20 | 530 | } |
531 | ||
532 | return atoi (p); | |
533 | } | |
3bcb26d1 | 534 | |
eb59413a | 535 | /* When compiling with a recent enough GCC, we use the GNU C "extern inline" |
536 | for floor_log2 and exact_log2; see toplev.h. That construct, however, | |
537 | conflicts with the ISO C++ One Definition Rule. */ | |
538 | ||
cd62e7b6 | 539 | #if GCC_VERSION < 3004 || !defined (__cplusplus) |
eb59413a | 540 | |
2f8c3981 | 541 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. |
05c09cb8 | 542 | If X is 0, return -1. */ |
3bcb26d1 | 543 | |
544 | int | |
05c09cb8 | 545 | floor_log2 (unsigned HOST_WIDE_INT x) |
3bcb26d1 | 546 | { |
05c09cb8 | 547 | int t = 0; |
548 | ||
2f8c3981 | 549 | if (x == 0) |
3bcb26d1 | 550 | return -1; |
05c09cb8 | 551 | |
552 | #ifdef CLZ_HWI | |
553 | t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x); | |
554 | #else | |
555 | if (HOST_BITS_PER_WIDE_INT > 64) | |
5babc3bf | 556 | if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64)) |
2f8c3981 | 557 | t += 64; |
05c09cb8 | 558 | if (HOST_BITS_PER_WIDE_INT > 32) |
5babc3bf | 559 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32)) |
2f8c3981 | 560 | t += 32; |
5babc3bf | 561 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16)) |
2f8c3981 | 562 | t += 16; |
5babc3bf | 563 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8)) |
2f8c3981 | 564 | t += 8; |
5babc3bf | 565 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4)) |
2f8c3981 | 566 | t += 4; |
5babc3bf | 567 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2)) |
2f8c3981 | 568 | t += 2; |
5babc3bf | 569 | if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1)) |
2f8c3981 | 570 | t += 1; |
05c09cb8 | 571 | #endif |
572 | ||
2f8c3981 | 573 | return t; |
3bcb26d1 | 574 | } |
575 | ||
2f8c3981 | 576 | /* Return the logarithm of X, base 2, considering X unsigned, |
05c09cb8 | 577 | if X is a power of 2. Otherwise, returns -1. */ |
3bcb26d1 | 578 | |
579 | int | |
05c09cb8 | 580 | exact_log2 (unsigned HOST_WIDE_INT x) |
3bcb26d1 | 581 | { |
05c09cb8 | 582 | if (x != (x & -x)) |
2f8c3981 | 583 | return -1; |
05c09cb8 | 584 | #ifdef CTZ_HWI |
585 | return x ? CTZ_HWI (x) : -1; | |
586 | #else | |
587 | return floor_log2 (x); | |
588 | #endif | |
3bcb26d1 | 589 | } |
590 | ||
cd62e7b6 | 591 | #endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */ |
eb59413a | 592 | |
b9b90cce | 593 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
3a2aee0e | 594 | into ICE messages, which is much more user friendly. In case the |
595 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
3bcb26d1 | 596 | |
597 | static void | |
7237deda | 598 | crash_signal (int signo) |
3bcb26d1 | 599 | { |
3a2aee0e | 600 | signal (signo, SIG_DFL); |
c706a9d9 | 601 | |
602 | /* If we crashed while processing an ASM statement, then be a little more | |
603 | graceful. It's most likely the user's fault. */ | |
604 | if (this_is_asm_operands) | |
605 | { | |
606 | output_operand_lossage ("unrecoverable error"); | |
607 | exit (FATAL_EXIT_CODE); | |
608 | } | |
609 | ||
59b7a777 | 610 | internal_error ("%s", strsignal (signo)); |
3bcb26d1 | 611 | } |
612 | ||
5f07bab0 | 613 | /* Arrange to dump core on error. (The regular error message is still |
614 | printed first, except in the case of abort().) */ | |
615 | ||
616 | static void | |
7237deda | 617 | setup_core_dumping (void) |
5f07bab0 | 618 | { |
619 | #ifdef SIGABRT | |
620 | signal (SIGABRT, SIG_DFL); | |
621 | #endif | |
622 | #if defined(HAVE_SETRLIMIT) | |
623 | { | |
624 | struct rlimit rlim; | |
625 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
d07c9932 | 626 | fatal_error ("getting core file size maximum limit: %m"); |
5f07bab0 | 627 | rlim.rlim_cur = rlim.rlim_max; |
628 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
d07c9932 | 629 | fatal_error ("setting core file size limit to maximum: %m"); |
5f07bab0 | 630 | } |
631 | #endif | |
632 | diagnostic_abort_on_error (global_dc); | |
633 | } | |
634 | ||
635 | ||
3bcb26d1 | 636 | /* Strip off a legitimate source ending from the input string NAME of |
29db5b69 | 637 | length LEN. Rather than having to know the names used by all of |
0e497de6 | 638 | our front ends, we strip off an ending of a period followed by |
89a75961 | 639 | up to five characters. (Java uses ".class".) */ |
3bcb26d1 | 640 | |
641 | void | |
7237deda | 642 | strip_off_ending (char *name, int len) |
3bcb26d1 | 643 | { |
0e497de6 | 644 | int i; |
6c34d0c2 | 645 | for (i = 2; i < 6 && len > i; i++) |
0e497de6 | 646 | { |
647 | if (name[len - i] == '.') | |
648 | { | |
649 | name[len - i] = '\0'; | |
650 | break; | |
651 | } | |
652 | } | |
3bcb26d1 | 653 | } |
654 | ||
1ca05b7f | 655 | /* Output a quoted string. */ |
a92771b8 | 656 | |
1ca05b7f | 657 | void |
7237deda | 658 | output_quoted_string (FILE *asm_file, const char *string) |
1ca05b7f | 659 | { |
0dbd1c74 | 660 | #ifdef OUTPUT_QUOTED_STRING |
661 | OUTPUT_QUOTED_STRING (asm_file, string); | |
662 | #else | |
1ca05b7f | 663 | char c; |
664 | ||
665 | putc ('\"', asm_file); | |
666 | while ((c = *string++) != 0) | |
667 | { | |
686ddf2e | 668 | if (ISPRINT (c)) |
669 | { | |
670 | if (c == '\"' || c == '\\') | |
671 | putc ('\\', asm_file); | |
672 | putc (c, asm_file); | |
673 | } | |
674 | else | |
6e957326 | 675 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
1ca05b7f | 676 | } |
677 | putc ('\"', asm_file); | |
0dbd1c74 | 678 | #endif |
1ca05b7f | 679 | } |
680 | ||
3bcb26d1 | 681 | /* Output a file name in the form wanted by System V. */ |
682 | ||
683 | void | |
7237deda | 684 | output_file_directive (FILE *asm_file, const char *input_name) |
3bcb26d1 | 685 | { |
df89076c | 686 | int len; |
687 | const char *na; | |
7e614678 | 688 | |
df89076c | 689 | if (input_name == NULL) |
690 | input_name = "<stdin>"; | |
5f1f2de5 | 691 | else |
692 | input_name = remap_debug_filename (input_name); | |
df89076c | 693 | |
694 | len = strlen (input_name); | |
695 | na = input_name + len; | |
3bcb26d1 | 696 | |
697 | /* NA gets INPUT_NAME sans directory names. */ | |
698 | while (na > input_name) | |
699 | { | |
11a8d03b | 700 | if (IS_DIR_SEPARATOR (na[-1])) |
b1157638 | 701 | break; |
3bcb26d1 | 702 | na--; |
703 | } | |
704 | ||
3bcb26d1 | 705 | #ifdef ASM_OUTPUT_SOURCE_FILENAME |
706 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
707 | #else | |
1ca05b7f | 708 | fprintf (asm_file, "\t.file\t"); |
709 | output_quoted_string (asm_file, na); | |
710 | fputc ('\n', asm_file); | |
3bcb26d1 | 711 | #endif |
3bcb26d1 | 712 | } |
03414cfb | 713 | |
c131e678 | 714 | /* A subroutine of wrapup_global_declarations. We've come to the end of |
715 | the compilation unit. All deferred variables should be undeferred, | |
716 | and all incomplete decls should be finalized. */ | |
717 | ||
718 | void | |
719 | wrapup_global_declaration_1 (tree decl) | |
720 | { | |
721 | /* We're not deferring this any longer. Assignment is conditional to | |
722 | avoid needlessly dirtying PCH pages. */ | |
723 | if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS) | |
724 | && DECL_DEFER_OUTPUT (decl) != 0) | |
725 | DECL_DEFER_OUTPUT (decl) = 0; | |
726 | ||
727 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) | |
728 | lang_hooks.finish_incomplete_decl (decl); | |
729 | } | |
730 | ||
731 | /* A subroutine of wrapup_global_declarations. Decide whether or not DECL | |
732 | needs to be output. Return true if it is output. */ | |
733 | ||
734 | bool | |
735 | wrapup_global_declaration_2 (tree decl) | |
736 | { | |
737 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
738 | return false; | |
739 | ||
740 | /* Don't write out static consts, unless we still need them. | |
741 | ||
742 | We also keep static consts if not optimizing (for debugging), | |
743 | unless the user specified -fno-keep-static-consts. | |
744 | ??? They might be better written into the debug information. | |
745 | This is possible when using DWARF. | |
746 | ||
747 | A language processor that wants static constants to be always | |
748 | written out (even if it is not used) is responsible for | |
749 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
750 | calls rest_of_decl_compilation from finish_decl. | |
751 | One motivation for this is that is conventional in some | |
752 | environments to write things like: | |
753 | static const char rcsid[] = "... version string ..."; | |
754 | intending to force the string to be in the executable. | |
755 | ||
756 | A language processor that would prefer to have unneeded | |
757 | static constants "optimized away" would just defer writing | |
758 | them out until here. E.g. C++ does this, because static | |
759 | constants are often defined in header files. | |
760 | ||
761 | ??? A tempting alternative (for both C and C++) would be | |
762 | to force a constant to be written if and only if it is | |
763 | defined in a main file, as opposed to an include file. */ | |
764 | ||
765 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) | |
766 | { | |
1d416bd7 | 767 | struct varpool_node *node; |
c131e678 | 768 | bool needed = true; |
1d416bd7 | 769 | node = varpool_node (decl); |
c131e678 | 770 | |
771 | if (node->finalized) | |
772 | needed = false; | |
773 | else if (node->alias) | |
774 | needed = false; | |
775 | else if (!cgraph_global_info_ready | |
776 | && (TREE_USED (decl) | |
777 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
778 | /* needed */; | |
779 | else if (node->needed) | |
780 | /* needed */; | |
781 | else if (DECL_COMDAT (decl)) | |
782 | needed = false; | |
783 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
784 | && (optimize || !flag_keep_static_consts | |
785 | || DECL_ARTIFICIAL (decl))) | |
786 | needed = false; | |
787 | ||
788 | if (needed) | |
789 | { | |
790 | rest_of_decl_compilation (decl, 1, 1); | |
791 | return true; | |
792 | } | |
793 | } | |
794 | ||
795 | return false; | |
796 | } | |
797 | ||
a84da62d | 798 | /* Do any final processing required for the declarations in VEC, of |
799 | which there are LEN. We write out inline functions and variables | |
800 | that have been deferred until this point, but which are required. | |
f712a0dc | 801 | Returns nonzero if anything was put out. */ |
89a75961 | 802 | |
c131e678 | 803 | bool |
7237deda | 804 | wrapup_global_declarations (tree *vec, int len) |
a84da62d | 805 | { |
c131e678 | 806 | bool reconsider, output_something = false; |
a84da62d | 807 | int i; |
a84da62d | 808 | |
809 | for (i = 0; i < len; i++) | |
c131e678 | 810 | wrapup_global_declaration_1 (vec[i]); |
a84da62d | 811 | |
812 | /* Now emit any global variables or functions that we have been | |
813 | putting off. We need to loop in case one of the things emitted | |
814 | here references another one which comes earlier in the list. */ | |
815 | do | |
816 | { | |
c131e678 | 817 | reconsider = false; |
a84da62d | 818 | for (i = 0; i < len; i++) |
c131e678 | 819 | reconsider |= wrapup_global_declaration_2 (vec[i]); |
a84da62d | 820 | if (reconsider) |
c131e678 | 821 | output_something = true; |
a84da62d | 822 | } |
823 | while (reconsider); | |
824 | ||
825 | return output_something; | |
826 | } | |
827 | ||
c131e678 | 828 | /* A subroutine of check_global_declarations. Issue appropriate warnings |
829 | for the global declaration DECL. */ | |
830 | ||
831 | void | |
832 | check_global_declaration_1 (tree decl) | |
833 | { | |
834 | /* Warn about any function declared static but not defined. We don't | |
835 | warn about variables, because many programs have static variables | |
836 | that exist only to get some text into the object file. */ | |
837 | if (TREE_CODE (decl) == FUNCTION_DECL | |
838 | && DECL_INITIAL (decl) == 0 | |
839 | && DECL_EXTERNAL (decl) | |
840 | && ! DECL_ARTIFICIAL (decl) | |
841 | && ! TREE_NO_WARNING (decl) | |
842 | && ! TREE_PUBLIC (decl) | |
843 | && (warn_unused_function | |
844 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
845 | { | |
846 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
21ca8540 | 847 | pedwarn (input_location, 0, "%q+F used but never defined", decl); |
c131e678 | 848 | else |
2006d7dc | 849 | warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl); |
c131e678 | 850 | /* This symbol is effectively an "extern" declaration now. */ |
851 | TREE_PUBLIC (decl) = 1; | |
852 | assemble_external (decl); | |
853 | } | |
854 | ||
855 | /* Warn about static fns or vars defined but not used. */ | |
856 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
857 | /* We don't warn about "static const" variables because the | |
858 | "rcs_id" idiom uses that construction. */ | |
859 | || (warn_unused_variable | |
860 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
861 | && ! DECL_IN_SYSTEM_HEADER (decl) | |
862 | && ! TREE_USED (decl) | |
863 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
864 | to handle multiple external decls in different scopes. */ | |
1563f282 | 865 | && ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl))) |
c131e678 | 866 | && ! DECL_EXTERNAL (decl) |
867 | && ! TREE_PUBLIC (decl) | |
868 | /* A volatile variable might be used in some non-obvious way. */ | |
869 | && ! TREE_THIS_VOLATILE (decl) | |
870 | /* Global register variables must be declared to reserve them. */ | |
871 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
872 | /* Otherwise, ask the language. */ | |
873 | && lang_hooks.decls.warn_unused_global (decl)) | |
2006d7dc | 874 | warning ((TREE_CODE (decl) == FUNCTION_DECL) |
875 | ? OPT_Wunused_function | |
876 | : OPT_Wunused_variable, | |
877 | "%q+D defined but not used", decl); | |
c131e678 | 878 | } |
879 | ||
a84da62d | 880 | /* Issue appropriate warnings for the global declarations in VEC (of |
c131e678 | 881 | which there are LEN). */ |
89a75961 | 882 | |
a84da62d | 883 | void |
7237deda | 884 | check_global_declarations (tree *vec, int len) |
a84da62d | 885 | { |
a84da62d | 886 | int i; |
887 | ||
888 | for (i = 0; i < len; i++) | |
c131e678 | 889 | check_global_declaration_1 (vec[i]); |
890 | } | |
a84da62d | 891 | |
c131e678 | 892 | /* Emit debugging information for all global declarations in VEC. */ |
893 | ||
894 | void | |
895 | emit_debug_global_declarations (tree *vec, int len) | |
896 | { | |
897 | int i; | |
898 | ||
899 | /* Avoid confusing the debug information machinery when there are errors. */ | |
900 | if (errorcount != 0 || sorrycount != 0) | |
901 | return; | |
902 | ||
903 | timevar_push (TV_SYMOUT); | |
904 | for (i = 0; i < len; i++) | |
905 | debug_hooks->global_decl (vec[i]); | |
906 | timevar_pop (TV_SYMOUT); | |
a84da62d | 907 | } |
7291115d | 908 | |
f73a6602 | 909 | /* Warn about a use of an identifier which was marked deprecated. */ |
910 | void | |
911 | warn_deprecated_use (tree node) | |
912 | { | |
913 | if (node == 0 || !warn_deprecated_decl) | |
914 | return; | |
915 | ||
916 | if (DECL_P (node)) | |
fdfe4b3f | 917 | { |
918 | expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node)); | |
b9e76825 | 919 | warning (OPT_Wdeprecated_declarations, |
bf6fb451 | 920 | "%qD is deprecated (declared at %s:%d)", |
921 | node, xloc.file, xloc.line); | |
fdfe4b3f | 922 | } |
f73a6602 | 923 | else if (TYPE_P (node)) |
924 | { | |
abd3e6b5 | 925 | tree what = NULL_TREE; |
f73a6602 | 926 | tree decl = TYPE_STUB_DECL (node); |
927 | ||
ba03a908 | 928 | if (TYPE_NAME (node)) |
929 | { | |
930 | if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE) | |
abd3e6b5 | 931 | what = TYPE_NAME (node); |
ba03a908 | 932 | else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL |
933 | && DECL_NAME (TYPE_NAME (node))) | |
abd3e6b5 | 934 | what = DECL_NAME (TYPE_NAME (node)); |
ba03a908 | 935 | } |
f73a6602 | 936 | |
fdfe4b3f | 937 | if (decl) |
f73a6602 | 938 | { |
fdfe4b3f | 939 | expanded_location xloc |
940 | = expand_location (DECL_SOURCE_LOCATION (decl)); | |
941 | if (what) | |
b9e76825 | 942 | warning (OPT_Wdeprecated_declarations, |
abd3e6b5 | 943 | "%qE is deprecated (declared at %s:%d)", what, |
b9e76825 | 944 | xloc.file, xloc.line); |
f73a6602 | 945 | else |
b9e76825 | 946 | warning (OPT_Wdeprecated_declarations, |
947 | "type is deprecated (declared at %s:%d)", | |
fdfe4b3f | 948 | xloc.file, xloc.line); |
f73a6602 | 949 | } |
f73a6602 | 950 | else |
fdfe4b3f | 951 | { |
952 | if (what) | |
abd3e6b5 | 953 | warning (OPT_Wdeprecated_declarations, "%qE is deprecated", what); |
ba03a908 | 954 | else |
b9e76825 | 955 | warning (OPT_Wdeprecated_declarations, "type is deprecated"); |
fdfe4b3f | 956 | } |
f73a6602 | 957 | } |
958 | } | |
959 | ||
9ceb1c29 | 960 | /* Compile an entire translation unit. Write a file of assembly |
961 | output and various debugging dumps. */ | |
3bcb26d1 | 962 | |
963 | static void | |
7237deda | 964 | compile_file (void) |
3bcb26d1 | 965 | { |
3bcb26d1 | 966 | /* Initialize yet another pass. */ |
967 | ||
dfecde36 | 968 | ggc_protect_identifiers = true; |
969 | ||
121f3051 | 970 | init_cgraph (); |
b54842d8 | 971 | init_final (main_input_filename); |
44359ced | 972 | coverage_init (aux_base_name); |
9659d177 | 973 | statistics_init (); |
3bcb26d1 | 974 | |
74d2af64 | 975 | timevar_push (TV_PARSE); |
3bcb26d1 | 976 | |
b78207a0 | 977 | /* Call the parser, which parses the entire file (calling |
978 | rest_of_compilation for each function). */ | |
dc24ddbd | 979 | lang_hooks.parse_file (set_yydebug); |
3bcb26d1 | 980 | |
3bcb26d1 | 981 | /* Compilation is now finished except for writing |
982 | what's left of the symbol table output. */ | |
74d2af64 | 983 | timevar_pop (TV_PARSE); |
3bcb26d1 | 984 | |
15daca6e | 985 | if (flag_syntax_only) |
cdc9fa3e | 986 | return; |
a7b7430b | 987 | |
dfecde36 | 988 | ggc_protect_identifiers = false; |
989 | ||
dc24ddbd | 990 | lang_hooks.decls.final_write_globals (); |
15daca6e | 991 | |
992 | if (errorcount || sorrycount) | |
993 | return; | |
994 | ||
1d416bd7 | 995 | varpool_assemble_pending_decls (); |
d7401838 | 996 | finish_aliases_2 (); |
229dcfae | 997 | |
e68ba323 | 998 | /* Likewise for mudflap static object registrations. */ |
999 | if (flag_mudflap) | |
1000 | mudflap_finish_file (); | |
1001 | ||
9dda1f80 | 1002 | /* Likewise for emulated thread-local storage. */ |
1003 | if (!targetm.have_tls) | |
1004 | emutls_finish (); | |
1005 | ||
2dbdc48e | 1006 | output_shared_constant_pool (); |
f2d0e9f1 | 1007 | output_object_blocks (); |
1008 | ||
df1c8607 | 1009 | /* Write out any pending weak symbol declarations. */ |
df1c8607 | 1010 | weak_finish (); |
1011 | ||
89a75961 | 1012 | /* Do dbx symbols. */ |
74d2af64 | 1013 | timevar_push (TV_SYMOUT); |
c140b944 | 1014 | |
34986748 | 1015 | #if defined DWARF2_DEBUGGING_INFO || defined DWARF2_UNWIND_INFO |
d757b8c9 | 1016 | if (dwarf2out_do_frame ()) |
1017 | dwarf2out_frame_finish (); | |
1018 | #endif | |
1019 | ||
b9b7f8b4 | 1020 | (*debug_hooks->finish) (main_input_filename); |
74d2af64 | 1021 | timevar_pop (TV_SYMOUT); |
be6eb971 | 1022 | |
3bcb26d1 | 1023 | /* Output some stuff at end of file if nec. */ |
1024 | ||
ad5818ae | 1025 | dw2_output_indirect_constants (); |
1026 | ||
44b23e05 | 1027 | /* Flush any pending external directives. */ |
4ffeedd3 | 1028 | process_pending_assemble_externals (); |
1029 | ||
f006a2e6 | 1030 | /* Attach a special .ident directive to the end of the file to identify |
1031 | the version of GCC which compiled this code. The format of the .ident | |
1032 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1033 | #ifdef IDENT_ASM_OP | |
1034 | if (!flag_no_ident) | |
d25dc80e | 1035 | { |
1036 | const char *pkg_version = "(GNU) "; | |
1037 | ||
1038 | if (strcmp ("(GCC) ", pkgversion_string)) | |
1039 | pkg_version = pkgversion_string; | |
1040 | fprintf (asm_out_file, "%s\"GCC: %s%s\"\n", | |
1041 | IDENT_ASM_OP, pkg_version, version_string); | |
1042 | } | |
f006a2e6 | 1043 | #endif |
5cf09555 | 1044 | |
1045 | /* This must be at the end. Some target ports emit end of file directives | |
1046 | into the assembly file here, and hence we can not output anything to the | |
1047 | assembly file after this point. */ | |
1048 | targetm.asm_out.file_end (); | |
3bcb26d1 | 1049 | } |
03414cfb | 1050 | |
a49a878f | 1051 | /* Parse a -d... command line switch. */ |
3bcb26d1 | 1052 | |
1053 | void | |
a49a878f | 1054 | decode_d_option (const char *arg) |
3bcb26d1 | 1055 | { |
a49a878f | 1056 | int c; |
5b7d4198 | 1057 | |
a49a878f | 1058 | while (*arg) |
1059 | switch (c = *arg++) | |
1060 | { | |
1061 | case 'A': | |
1062 | flag_debug_asm = 1; | |
1063 | break; | |
1064 | case 'p': | |
1065 | flag_print_asm_name = 1; | |
1066 | break; | |
1067 | case 'P': | |
1068 | flag_dump_rtl_in_asm = 1; | |
1069 | flag_print_asm_name = 1; | |
1070 | break; | |
1071 | case 'v': | |
1072 | graph_dump_format = vcg; | |
1073 | break; | |
1074 | case 'x': | |
1075 | rtl_dump_and_exit = 1; | |
1076 | break; | |
1077 | case 'y': | |
1078 | set_yydebug = 1; | |
1079 | break; | |
1080 | case 'D': /* These are handled by the preprocessor. */ | |
1081 | case 'I': | |
20099e35 | 1082 | case 'M': |
1083 | case 'N': | |
34c3de48 | 1084 | case 'U': |
a49a878f | 1085 | break; |
1086 | case 'H': | |
1087 | setup_core_dumping(); | |
1088 | break; | |
a49a878f | 1089 | case 'a': |
5d48fdb4 | 1090 | enable_rtl_dump_file (); |
1091 | break; | |
1092 | ||
a49a878f | 1093 | default: |
c3ceba8e | 1094 | warning (0, "unrecognized gcc debugging option: %c", c); |
a49a878f | 1095 | break; |
1096 | } | |
3bcb26d1 | 1097 | } |
1098 | ||
a49a878f | 1099 | /* Indexed by enum debug_info_type. */ |
1100 | const char *const debug_type_names[] = | |
3bcb26d1 | 1101 | { |
8eec8aec | 1102 | "none", "stabs", "coff", "dwarf-2", "xcoff", "vms" |
a49a878f | 1103 | }; |
316bc009 | 1104 | |
a49a878f | 1105 | /* Print version information to FILE. |
1106 | Each line begins with INDENT (for the case where FILE is the | |
1107 | assembler output file). */ | |
9dda7915 | 1108 | |
a49a878f | 1109 | void |
1110 | print_version (FILE *file, const char *indent) | |
9ceb1c29 | 1111 | { |
0a81f5a0 | 1112 | static const char fmt1[] = |
9ceb1c29 | 1113 | #ifdef __GNUC__ |
d25dc80e | 1114 | N_("%s%s%s %sversion %s (%s)\n%s\tcompiled by GNU C version %s, ") |
9ceb1c29 | 1115 | #else |
d25dc80e | 1116 | N_("%s%s%s %sversion %s (%s) compiled by CC, ") |
9ceb1c29 | 1117 | #endif |
0a81f5a0 | 1118 | ; |
1119 | static const char fmt2[] = | |
bd0d5325 | 1120 | N_("GMP version %s, MPFR version %s.\n"); |
1121 | static const char fmt3[] = | |
ceb21d85 | 1122 | N_("%s%swarning: %s header version %s differs from library version %s.\n"); |
bd0d5325 | 1123 | static const char fmt4[] = |
0a81f5a0 | 1124 | N_("%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n"); |
1125 | #ifndef __VERSION__ | |
1126 | #define __VERSION__ "[?]" | |
1127 | #endif | |
1128 | fprintf (file, | |
1129 | file == stderr ? _(fmt1) : fmt1, | |
1130 | indent, *indent != 0 ? " " : "", | |
d25dc80e | 1131 | lang_hooks.name, pkgversion_string, version_string, TARGET_NAME, |
9ceb1c29 | 1132 | indent, __VERSION__); |
bd0d5325 | 1133 | |
1134 | /* We need to stringify the GMP macro values. Ugh, gmp_version has | |
660b6c15 | 1135 | two string formats, "i.j.k" and "i.j" when k is zero. As of |
1136 | gmp-4.3.0, GMP always uses the 3 number format. */ | |
bd0d5325 | 1137 | #define GCC_GMP_STRINGIFY_VERSION3(X) #X |
1138 | #define GCC_GMP_STRINGIFY_VERSION2(X) GCC_GMP_STRINGIFY_VERSION3(X) | |
660b6c15 | 1139 | #define GCC_GMP_VERSION_NUM(X,Y,Z) (((X) << 16L) | ((Y) << 8) | (Z)) |
1140 | #define GCC_GMP_VERSION \ | |
1141 | GCC_GMP_VERSION_NUM(__GNU_MP_VERSION, __GNU_MP_VERSION_MINOR, __GNU_MP_VERSION_PATCHLEVEL) | |
1142 | #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,0) && __GNU_MP_VERSION_PATCHLEVEL == 0 | |
bd0d5325 | 1143 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ |
1144 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) | |
1145 | #else | |
1146 | #define GCC_GMP_STRINGIFY_VERSION GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION) "." \ | |
1147 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_MINOR) "." \ | |
1148 | GCC_GMP_STRINGIFY_VERSION2(__GNU_MP_VERSION_PATCHLEVEL) | |
1149 | #endif | |
0a81f5a0 | 1150 | fprintf (file, |
1151 | file == stderr ? _(fmt2) : fmt2, | |
bd0d5325 | 1152 | GCC_GMP_STRINGIFY_VERSION, MPFR_VERSION_STRING); |
1153 | if (strcmp (GCC_GMP_STRINGIFY_VERSION, gmp_version)) | |
1154 | fprintf (file, | |
1155 | file == stderr ? _(fmt3) : fmt3, | |
ceb21d85 | 1156 | indent, *indent != 0 ? " " : "", |
bd0d5325 | 1157 | "GMP", GCC_GMP_STRINGIFY_VERSION, gmp_version); |
1158 | if (strcmp (MPFR_VERSION_STRING, mpfr_get_version ())) | |
1159 | fprintf (file, | |
1160 | file == stderr ? _(fmt3) : fmt3, | |
ceb21d85 | 1161 | indent, *indent != 0 ? " " : "", |
bd0d5325 | 1162 | "MPFR", MPFR_VERSION_STRING, mpfr_get_version ()); |
1163 | fprintf (file, | |
1164 | file == stderr ? _(fmt4) : fmt4, | |
e4de0dc0 | 1165 | indent, *indent != 0 ? " " : "", |
1166 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
e16288b4 | 1167 | |
1168 | print_plugins_versions (file, indent); | |
9ceb1c29 | 1169 | } |
1170 | ||
7c6733e8 | 1171 | #ifdef ASM_COMMENT_START |
1172 | static int | |
1173 | print_to_asm_out_file (print_switch_type type, const char * text) | |
1174 | { | |
1175 | bool prepend_sep = true; | |
1176 | ||
1177 | switch (type) | |
1178 | { | |
1179 | case SWITCH_TYPE_LINE_END: | |
1180 | putc ('\n', asm_out_file); | |
1181 | return 1; | |
1182 | ||
1183 | case SWITCH_TYPE_LINE_START: | |
1184 | fputs (ASM_COMMENT_START, asm_out_file); | |
1185 | return strlen (ASM_COMMENT_START); | |
1186 | ||
1187 | case SWITCH_TYPE_DESCRIPTIVE: | |
1188 | if (ASM_COMMENT_START[0] == 0) | |
1189 | prepend_sep = false; | |
1190 | /* Drop through. */ | |
1191 | case SWITCH_TYPE_PASSED: | |
1192 | case SWITCH_TYPE_ENABLED: | |
1193 | if (prepend_sep) | |
1194 | fputc (' ', asm_out_file); | |
1195 | fprintf (asm_out_file, text); | |
1196 | /* No need to return the length here as | |
1197 | print_single_switch has already done it. */ | |
1198 | return 0; | |
1199 | ||
1200 | default: | |
1201 | return -1; | |
1202 | } | |
1203 | } | |
1204 | #endif | |
1205 | ||
1206 | static int | |
1207 | print_to_stderr (print_switch_type type, const char * text) | |
1208 | { | |
1209 | switch (type) | |
1210 | { | |
1211 | case SWITCH_TYPE_LINE_END: | |
1212 | putc ('\n', stderr); | |
1213 | return 1; | |
1214 | ||
1215 | case SWITCH_TYPE_LINE_START: | |
1216 | return 0; | |
1217 | ||
1218 | case SWITCH_TYPE_PASSED: | |
1219 | case SWITCH_TYPE_ENABLED: | |
1220 | fputc (' ', stderr); | |
1221 | /* Drop through. */ | |
1222 | ||
1223 | case SWITCH_TYPE_DESCRIPTIVE: | |
1224 | fprintf (stderr, text); | |
1225 | /* No need to return the length here as | |
1226 | print_single_switch has already done it. */ | |
1227 | return 0; | |
1228 | ||
1229 | default: | |
1230 | return -1; | |
1231 | } | |
1232 | } | |
1233 | ||
9ceb1c29 | 1234 | /* Print an option value and return the adjusted position in the line. |
7c6733e8 | 1235 | ??? print_fn doesn't handle errors, eg disk full; presumably other |
1236 | code will catch a disk full though. */ | |
9ceb1c29 | 1237 | |
1238 | static int | |
7c6733e8 | 1239 | print_single_switch (print_switch_fn_type print_fn, |
1240 | int pos, | |
1241 | print_switch_type type, | |
1242 | const char * text) | |
9ceb1c29 | 1243 | { |
7c6733e8 | 1244 | /* The ultrix fprintf returns 0 on success, so compute the result |
1245 | we want here since we need it for the following test. The +1 | |
7920eed5 | 1246 | is for the separator character that will probably be emitted. */ |
7c6733e8 | 1247 | int len = strlen (text) + 1; |
9ceb1c29 | 1248 | |
1249 | if (pos != 0 | |
7c6733e8 | 1250 | && pos + len > MAX_LINE) |
9ceb1c29 | 1251 | { |
7c6733e8 | 1252 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1253 | pos = 0; |
1254 | } | |
7c6733e8 | 1255 | |
9ceb1c29 | 1256 | if (pos == 0) |
7c6733e8 | 1257 | pos += print_fn (SWITCH_TYPE_LINE_START, NULL); |
1258 | ||
1259 | print_fn (type, text); | |
1260 | return pos + len; | |
9ceb1c29 | 1261 | } |
1262 | ||
7c6733e8 | 1263 | /* Print active target switches using PRINT_FN. |
9ceb1c29 | 1264 | POS is the current cursor position and MAX is the size of a "line". |
1265 | Each line begins with INDENT and ends with TERM. | |
1266 | Each switch is separated from the next by SEP. */ | |
1267 | ||
1268 | static void | |
7c6733e8 | 1269 | print_switch_values (print_switch_fn_type print_fn) |
9ceb1c29 | 1270 | { |
7c6733e8 | 1271 | int pos = 0; |
9ceb1c29 | 1272 | size_t j; |
4838a8b6 | 1273 | const char **p; |
9ceb1c29 | 1274 | |
eb54bdbd | 1275 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
b80f1d67 | 1276 | that it can be printed below. This helps reproducibility. */ |
b6c1bd72 | 1277 | if (!flag_random_seed) |
1278 | init_random_seed (); | |
eb54bdbd | 1279 | |
9ceb1c29 | 1280 | /* Print the options as passed. */ |
7c6733e8 | 1281 | pos = print_single_switch (print_fn, pos, |
1282 | SWITCH_TYPE_DESCRIPTIVE, _("options passed: ")); | |
9ceb1c29 | 1283 | |
1284 | for (p = &save_argv[1]; *p != NULL; p++) | |
7c6733e8 | 1285 | { |
1286 | if (**p == '-') | |
1287 | { | |
1288 | /* Ignore these. */ | |
1289 | if (strcmp (*p, "-o") == 0 | |
1290 | || strcmp (*p, "-dumpbase") == 0 | |
1291 | || strcmp (*p, "-auxbase") == 0) | |
1292 | { | |
1293 | if (p[1] != NULL) | |
1294 | p++; | |
1295 | continue; | |
1296 | } | |
1297 | ||
1298 | if (strcmp (*p, "-quiet") == 0 | |
1299 | || strcmp (*p, "-version") == 0) | |
9ceb1c29 | 1300 | continue; |
7c6733e8 | 1301 | |
1302 | if ((*p)[1] == 'd') | |
1303 | continue; | |
1304 | } | |
1305 | ||
1306 | pos = print_single_switch (print_fn, pos, SWITCH_TYPE_PASSED, *p); | |
1307 | } | |
1308 | ||
9ceb1c29 | 1309 | if (pos > 0) |
7c6733e8 | 1310 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1311 | |
1312 | /* Print the -f and -m options that have been enabled. | |
1313 | We don't handle language specific options but printing argv | |
1314 | should suffice. */ | |
7c6733e8 | 1315 | pos = print_single_switch (print_fn, 0, |
1316 | SWITCH_TYPE_DESCRIPTIVE, _("options enabled: ")); | |
9ceb1c29 | 1317 | |
2e9da478 | 1318 | for (j = 0; j < cl_options_count; j++) |
ff05e09e | 1319 | if ((cl_options[j].flags & CL_REPORT) |
efb9d9ee | 1320 | && option_enabled (j) > 0) |
7c6733e8 | 1321 | pos = print_single_switch (print_fn, pos, |
1322 | SWITCH_TYPE_ENABLED, cl_options[j].opt_text); | |
9ceb1c29 | 1323 | |
7c6733e8 | 1324 | print_fn (SWITCH_TYPE_LINE_END, NULL); |
9ceb1c29 | 1325 | } |
03414cfb | 1326 | |
9ceb1c29 | 1327 | /* Open assembly code output file. Do this even if -fsyntax-only is |
1328 | on, because then the driver will have provided the name of a | |
1329 | temporary file or bit bucket for us. NAME is the file specified on | |
1330 | the command line, possibly NULL. */ | |
1331 | static void | |
7237deda | 1332 | init_asm_output (const char *name) |
9ceb1c29 | 1333 | { |
1334 | if (name == NULL && asm_file_name == 0) | |
1335 | asm_out_file = stdout; | |
1336 | else | |
1337 | { | |
1338 | if (asm_file_name == 0) | |
b1157638 | 1339 | { |
1340 | int len = strlen (dump_base_name); | |
eb59413a | 1341 | char *dumpname = XNEWVEC (char, len + 6); |
7c6733e8 | 1342 | |
b1157638 | 1343 | memcpy (dumpname, dump_base_name, len + 1); |
1344 | strip_off_ending (dumpname, len); | |
1345 | strcat (dumpname, ".s"); | |
1346 | asm_file_name = dumpname; | |
1347 | } | |
9ceb1c29 | 1348 | if (!strcmp (asm_file_name, "-")) |
b1157638 | 1349 | asm_out_file = stdout; |
9ceb1c29 | 1350 | else |
62b4d90e | 1351 | asm_out_file = fopen (asm_file_name, "w+b"); |
9ceb1c29 | 1352 | if (asm_out_file == 0) |
eb586f2c | 1353 | fatal_error ("can%'t open %s for writing: %m", asm_file_name); |
9ceb1c29 | 1354 | } |
1355 | ||
9ceb1c29 | 1356 | if (!flag_syntax_only) |
1357 | { | |
92c473b8 | 1358 | targetm.asm_out.file_start (); |
9ceb1c29 | 1359 | |
7c6733e8 | 1360 | if (flag_record_gcc_switches) |
1361 | { | |
1362 | if (targetm.asm_out.record_gcc_switches) | |
1363 | { | |
1364 | /* Let the target know that we are about to start recording. */ | |
1365 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1366 | NULL); | |
1367 | /* Now record the switches. */ | |
1368 | print_switch_values (targetm.asm_out.record_gcc_switches); | |
1369 | /* Let the target know that the recording is over. */ | |
1370 | targetm.asm_out.record_gcc_switches (SWITCH_TYPE_DESCRIPTIVE, | |
1371 | NULL); | |
1372 | } | |
1373 | else | |
5bcc316e | 1374 | inform (input_location, "-frecord-gcc-switches is not supported by the current target"); |
7c6733e8 | 1375 | } |
1376 | ||
9ceb1c29 | 1377 | #ifdef ASM_COMMENT_START |
1378 | if (flag_verbose_asm) | |
1379 | { | |
7c6733e8 | 1380 | /* Print the list of switches in effect |
1381 | into the assembler file as comments. */ | |
9ceb1c29 | 1382 | print_version (asm_out_file, ASM_COMMENT_START); |
7c6733e8 | 1383 | print_switch_values (print_to_asm_out_file); |
9ceb1c29 | 1384 | fprintf (asm_out_file, "\n"); |
1385 | } | |
1386 | #endif | |
1387 | } | |
1388 | } | |
03414cfb | 1389 | |
7abcc497 | 1390 | /* Return true if the state of option OPTION should be stored in PCH files |
1391 | and checked by default_pch_valid_p. Store the option's current state | |
1392 | in STATE if so. */ | |
1393 | ||
1394 | static inline bool | |
1395 | option_affects_pch_p (int option, struct cl_option_state *state) | |
1396 | { | |
1397 | if ((cl_options[option].flags & CL_TARGET) == 0) | |
1398 | return false; | |
1399 | if (cl_options[option].flag_var == &target_flags) | |
1400 | if (targetm.check_pch_target_flags) | |
1401 | return false; | |
1402 | return get_option_state (option, state); | |
1403 | } | |
1404 | ||
7988d6e2 | 1405 | /* Default version of get_pch_validity. |
1406 | By default, every flag difference is fatal; that will be mostly right for | |
1407 | most targets, but completely right for very few. */ | |
1408 | ||
1409 | void * | |
1410 | default_get_pch_validity (size_t *len) | |
1411 | { | |
7abcc497 | 1412 | struct cl_option_state state; |
7988d6e2 | 1413 | size_t i; |
1414 | char *result, *r; | |
7e614678 | 1415 | |
6c3bc3be | 1416 | *len = 2; |
1417 | if (targetm.check_pch_target_flags) | |
1418 | *len += sizeof (target_flags); | |
7abcc497 | 1419 | for (i = 0; i < cl_options_count; i++) |
1420 | if (option_affects_pch_p (i, &state)) | |
1421 | *len += state.size; | |
7988d6e2 | 1422 | |
eb59413a | 1423 | result = r = XNEWVEC (char, *len); |
7988d6e2 | 1424 | r[0] = flag_pic; |
1425 | r[1] = flag_pie; | |
1426 | r += 2; | |
6c3bc3be | 1427 | if (targetm.check_pch_target_flags) |
7988d6e2 | 1428 | { |
6c3bc3be | 1429 | memcpy (r, &target_flags, sizeof (target_flags)); |
1430 | r += sizeof (target_flags); | |
7988d6e2 | 1431 | } |
6c3bc3be | 1432 | |
7abcc497 | 1433 | for (i = 0; i < cl_options_count; i++) |
1434 | if (option_affects_pch_p (i, &state)) | |
1435 | { | |
1436 | memcpy (r, state.data, state.size); | |
1437 | r += state.size; | |
1438 | } | |
7988d6e2 | 1439 | |
1440 | return result; | |
1441 | } | |
1442 | ||
6c3bc3be | 1443 | /* Return a message which says that a PCH file was created with a different |
1444 | setting of OPTION. */ | |
1445 | ||
1446 | static const char * | |
1447 | pch_option_mismatch (const char *option) | |
1448 | { | |
1449 | char *r; | |
1450 | ||
1451 | asprintf (&r, _("created and used with differing settings of '%s'"), option); | |
1452 | if (r == NULL) | |
1453 | return _("out of memory"); | |
1454 | return r; | |
1455 | } | |
1456 | ||
7988d6e2 | 1457 | /* Default version of pch_valid_p. */ |
1458 | ||
1459 | const char * | |
1460 | default_pch_valid_p (const void *data_p, size_t len) | |
1461 | { | |
7abcc497 | 1462 | struct cl_option_state state; |
7988d6e2 | 1463 | const char *data = (const char *)data_p; |
7988d6e2 | 1464 | size_t i; |
7e614678 | 1465 | |
7988d6e2 | 1466 | /* -fpic and -fpie also usually make a PCH invalid. */ |
1467 | if (data[0] != flag_pic) | |
1468 | return _("created and used with different settings of -fpic"); | |
1469 | if (data[1] != flag_pie) | |
1470 | return _("created and used with different settings of -fpie"); | |
1471 | data += 2; | |
1472 | ||
1473 | /* Check target_flags. */ | |
761d9126 | 1474 | if (targetm.check_pch_target_flags) |
1475 | { | |
6c3bc3be | 1476 | int tf; |
1477 | const char *r; | |
1478 | ||
1479 | memcpy (&tf, data, sizeof (target_flags)); | |
1480 | data += sizeof (target_flags); | |
1481 | len -= sizeof (target_flags); | |
1482 | r = targetm.check_pch_target_flags (tf); | |
761d9126 | 1483 | if (r != NULL) |
1484 | return r; | |
1485 | } | |
7988d6e2 | 1486 | |
7abcc497 | 1487 | for (i = 0; i < cl_options_count; i++) |
1488 | if (option_affects_pch_p (i, &state)) | |
1489 | { | |
1490 | if (memcmp (data, state.data, state.size) != 0) | |
6c3bc3be | 1491 | return pch_option_mismatch (cl_options[i].opt_text); |
7abcc497 | 1492 | data += state.size; |
1493 | len -= state.size; | |
1494 | } | |
1495 | ||
7988d6e2 | 1496 | return NULL; |
7988d6e2 | 1497 | } |
1498 | ||
aa6db498 | 1499 | /* Default tree printer. Handles declarations only. */ |
1500 | static bool | |
c907c5b1 | 1501 | default_tree_printer (pretty_printer * pp, text_info *text, const char *spec, |
3cf8b391 | 1502 | int precision, bool wide, bool set_locus, bool hash) |
aa6db498 | 1503 | { |
9366434c | 1504 | tree t; |
1505 | ||
c907c5b1 | 1506 | /* FUTURE: %+x should set the locus. */ |
3cf8b391 | 1507 | if (precision != 0 || wide || hash) |
c907c5b1 | 1508 | return false; |
1509 | ||
1510 | switch (*spec) | |
aa6db498 | 1511 | { |
132cae05 | 1512 | case 'E': |
1513 | t = va_arg (*text->args_ptr, tree); | |
1514 | if (TREE_CODE (t) == IDENTIFIER_NODE) | |
1515 | { | |
abd3e6b5 | 1516 | pp_identifier (pp, IDENTIFIER_POINTER (t)); |
132cae05 | 1517 | return true; |
1518 | } | |
1519 | break; | |
1520 | ||
aa6db498 | 1521 | case 'D': |
9366434c | 1522 | t = va_arg (*text->args_ptr, tree); |
8bc1e6ff | 1523 | if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t)) |
9366434c | 1524 | t = DECL_DEBUG_EXPR (t); |
1525 | break; | |
1526 | ||
aa6db498 | 1527 | case 'F': |
1528 | case 'T': | |
9366434c | 1529 | t = va_arg (*text->args_ptr, tree); |
1530 | break; | |
aa6db498 | 1531 | |
1532 | default: | |
1533 | return false; | |
1534 | } | |
9366434c | 1535 | |
3cf8b391 | 1536 | if (set_locus && text->locus) |
1537 | *text->locus = DECL_SOURCE_LOCATION (t); | |
1538 | ||
9366434c | 1539 | if (DECL_P (t)) |
1540 | { | |
1541 | const char *n = DECL_NAME (t) | |
abd3e6b5 | 1542 | ? identifier_to_locale (lang_hooks.decl_printable_name (t, 2)) |
1543 | : _("<anonymous>"); | |
9366434c | 1544 | pp_string (pp, n); |
1545 | } | |
1546 | else | |
b4c01899 | 1547 | dump_generic_node (pp, t, 0, TDF_DIAGNOSTIC, 0); |
9366434c | 1548 | |
1549 | return true; | |
aa6db498 | 1550 | } |
1551 | ||
931b0a0f | 1552 | /* A helper function; used as the reallocator function for cpp's line |
1553 | table. */ | |
1554 | static void * | |
1555 | realloc_for_line_map (void *ptr, size_t len) | |
1556 | { | |
1557 | return ggc_realloc (ptr, len); | |
1558 | } | |
1559 | ||
9ceb1c29 | 1560 | /* Initialization of the front end environment, before command line |
1561 | options are parsed. Signal handlers, internationalization etc. | |
1562 | ARGV0 is main's argv[0]. */ | |
1563 | static void | |
4838a8b6 | 1564 | general_init (const char *argv0) |
9ceb1c29 | 1565 | { |
4838a8b6 | 1566 | const char *p; |
9ceb1c29 | 1567 | |
1568 | p = argv0 + strlen (argv0); | |
1569 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
1570 | --p; | |
1571 | progname = p; | |
1572 | ||
1573 | xmalloc_set_program_name (progname); | |
6deeea15 | 1574 | |
77e1a5df | 1575 | hex_init (); |
1576 | ||
4367c81f | 1577 | /* Unlock the stdio streams. */ |
9c8f076b | 1578 | unlock_std_streams (); |
4367c81f | 1579 | |
eb718689 | 1580 | gcc_init_libintl (); |
be2828ce | 1581 | |
aa6db498 | 1582 | /* Initialize the diagnostics reporting machinery, so option parsing |
1583 | can give warnings and errors. */ | |
1584 | diagnostic_initialize (global_dc); | |
1585 | /* Set a default printer. Language specific initializations will | |
1586 | override it later. */ | |
1587 | pp_format_decoder (global_dc->printer) = &default_tree_printer; | |
1588 | ||
b9b90cce | 1589 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
1590 | #ifdef SIGSEGV | |
1591 | signal (SIGSEGV, crash_signal); | |
004cf1e3 | 1592 | #endif |
b9b90cce | 1593 | #ifdef SIGILL |
1594 | signal (SIGILL, crash_signal); | |
1595 | #endif | |
1596 | #ifdef SIGBUS | |
1597 | signal (SIGBUS, crash_signal); | |
1598 | #endif | |
1599 | #ifdef SIGABRT | |
1600 | signal (SIGABRT, crash_signal); | |
1601 | #endif | |
1602 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
1603 | signal (SIGIOT, crash_signal); | |
1604 | #endif | |
536f5fb1 | 1605 | #ifdef SIGFPE |
1606 | signal (SIGFPE, crash_signal); | |
1607 | #endif | |
89a75961 | 1608 | |
b197fbcf | 1609 | /* Other host-specific signal setup. */ |
1610 | (*host_hooks.extra_signals)(); | |
1611 | ||
5934ea7a | 1612 | /* Initialize the garbage-collector, string pools and tree type hash |
1613 | table. */ | |
1614 | init_ggc (); | |
1615 | init_stringpool (); | |
931b0a0f | 1616 | line_table = GGC_NEW (struct line_maps); |
1617 | linemap_init (line_table); | |
1618 | line_table->reallocator = realloc_for_line_map; | |
5934ea7a | 1619 | init_ttree (); |
262444a6 | 1620 | |
9ceb1c29 | 1621 | /* Initialize register usage now so switches may override. */ |
1622 | init_reg_sets (); | |
990339dd | 1623 | |
9a33a2e8 | 1624 | /* Register the language-independent parameters. */ |
1625 | add_params (lang_independent_params, LAST_PARAM); | |
1626 | ||
7d83df95 | 1627 | /* This must be done after add_params but before argument processing. */ |
1628 | init_ggc_heuristics(); | |
77fce4cd | 1629 | init_optimization_passes (); |
9659d177 | 1630 | statistics_early_init (); |
5764e93a | 1631 | } |
03414cfb | 1632 | |
f2d0e9f1 | 1633 | /* Return true if the current target supports -fsection-anchors. */ |
1634 | ||
1635 | static bool | |
1636 | target_supports_section_anchors_p (void) | |
1637 | { | |
1638 | if (targetm.min_anchor_offset == 0 && targetm.max_anchor_offset == 0) | |
1639 | return false; | |
1640 | ||
1641 | if (targetm.asm_out.output_anchor == NULL) | |
1642 | return false; | |
1643 | ||
1644 | return true; | |
1645 | } | |
1646 | ||
6d8b68a3 | 1647 | /* Default the align_* variables to 1 if they're still unset, and |
1648 | set up the align_*_log variables. */ | |
1649 | static void | |
1650 | init_alignments (void) | |
1651 | { | |
1652 | if (align_loops <= 0) | |
1653 | align_loops = 1; | |
1654 | if (align_loops_max_skip > align_loops) | |
1655 | align_loops_max_skip = align_loops - 1; | |
1656 | align_loops_log = floor_log2 (align_loops * 2 - 1); | |
1657 | if (align_jumps <= 0) | |
1658 | align_jumps = 1; | |
1659 | if (align_jumps_max_skip > align_jumps) | |
1660 | align_jumps_max_skip = align_jumps - 1; | |
1661 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); | |
1662 | if (align_labels <= 0) | |
1663 | align_labels = 1; | |
1664 | align_labels_log = floor_log2 (align_labels * 2 - 1); | |
1665 | if (align_labels_max_skip > align_labels) | |
1666 | align_labels_max_skip = align_labels - 1; | |
1667 | if (align_functions <= 0) | |
1668 | align_functions = 1; | |
1669 | align_functions_log = floor_log2 (align_functions * 2 - 1); | |
1670 | } | |
1671 | ||
5764e93a | 1672 | /* Process the options that have been parsed. */ |
1673 | static void | |
7237deda | 1674 | process_options (void) |
5764e93a | 1675 | { |
0c5e3a3d | 1676 | /* Just in case lang_hooks.post_options ends up calling a debug_hook. |
1677 | This can happen with incorrect pre-processed input. */ | |
1678 | debug_hooks = &do_nothing_debug_hooks; | |
1679 | ||
278e3a1f | 1680 | /* This replaces set_Wunused. */ |
1681 | if (warn_unused_function == -1) | |
1682 | warn_unused_function = warn_unused; | |
1683 | if (warn_unused_label == -1) | |
1684 | warn_unused_label = warn_unused; | |
1685 | /* Wunused-parameter is enabled if both -Wunused -Wextra are enabled. */ | |
1686 | if (warn_unused_parameter == -1) | |
1687 | warn_unused_parameter = (warn_unused && extra_warnings); | |
1688 | if (warn_unused_variable == -1) | |
1689 | warn_unused_variable = warn_unused; | |
1690 | if (warn_unused_value == -1) | |
1691 | warn_unused_value = warn_unused; | |
1692 | ||
a0ded67b | 1693 | /* This replaces set_Wextra. */ |
1694 | if (warn_uninitialized == -1) | |
1695 | warn_uninitialized = extra_warnings; | |
1696 | ||
03bde601 | 1697 | /* Allow the front end to perform consistency checks and do further |
1698 | initialization based on the command line options. This hook also | |
1699 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
1700 | so we can correctly initialize debug output. */ | |
dc24ddbd | 1701 | no_backend = lang_hooks.post_options (&main_input_filename); |
03bde601 | 1702 | |
3bcb26d1 | 1703 | #ifdef OVERRIDE_OPTIONS |
1704 | /* Some machines may reject certain combinations of options. */ | |
1705 | OVERRIDE_OPTIONS; | |
1706 | #endif | |
1707 | ||
f2d0e9f1 | 1708 | if (flag_section_anchors && !target_supports_section_anchors_p ()) |
1709 | { | |
1710 | warning (OPT_fsection_anchors, | |
1711 | "this target does not support %qs", "-fsection-anchors"); | |
1712 | flag_section_anchors = 0; | |
1713 | } | |
1714 | ||
5bf3fee3 | 1715 | if (flag_short_enums == 2) |
1716 | flag_short_enums = targetm.default_short_enums (); | |
1717 | ||
a766fb27 | 1718 | /* Set aux_base_name if not already set. */ |
1719 | if (aux_base_name) | |
1720 | ; | |
3272db82 | 1721 | else if (main_input_filename) |
a766fb27 | 1722 | { |
3272db82 | 1723 | char *name = xstrdup (lbasename (main_input_filename)); |
7237deda | 1724 | |
a766fb27 | 1725 | strip_off_ending (name, strlen (name)); |
1726 | aux_base_name = name; | |
1727 | } | |
1728 | else | |
1729 | aux_base_name = "gccaux"; | |
1730 | ||
abb60a19 | 1731 | #ifndef HAVE_cloog |
1732 | if (flag_graphite | |
1733 | || flag_loop_block | |
1734 | || flag_loop_interchange | |
f4c4e2a2 | 1735 | || flag_loop_strip_mine |
1736 | || flag_graphite_identity) | |
abb60a19 | 1737 | sorry ("Graphite loop optimizations cannot be used"); |
1738 | #endif | |
1739 | ||
3bcb26d1 | 1740 | /* Unrolling all loops implies that standard loop unrolling must also |
1741 | be done. */ | |
1742 | if (flag_unroll_all_loops) | |
1743 | flag_unroll_loops = 1; | |
ce32fe65 | 1744 | |
90f1c563 | 1745 | /* The loop unrolling code assumes that cse will be run after loop. |
472cd78a | 1746 | web and rename-registers also help when run after loop unrolling. */ |
1747 | ||
1748 | if (flag_rerun_cse_after_loop == AUTODETECT_VALUE) | |
1749 | flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops; | |
1750 | if (flag_web == AUTODETECT_VALUE) | |
1751 | flag_web = flag_unroll_loops || flag_peel_loops; | |
1752 | if (flag_rename_registers == AUTODETECT_VALUE) | |
1753 | flag_rename_registers = flag_unroll_loops || flag_peel_loops; | |
3bcb26d1 | 1754 | |
9645fa4f | 1755 | if (flag_non_call_exceptions) |
1756 | flag_asynchronous_unwind_tables = 1; | |
1757 | if (flag_asynchronous_unwind_tables) | |
1758 | flag_unwind_tables = 1; | |
1759 | ||
1c6a7b8c | 1760 | if (flag_value_profile_transformations) |
1761 | flag_profile_values = 1; | |
1762 | ||
3bcb26d1 | 1763 | /* Warn about options that are not supported on this machine. */ |
1764 | #ifndef INSN_SCHEDULING | |
1765 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
c3ceba8e | 1766 | warning (0, "instruction scheduling not supported on this target machine"); |
3bcb26d1 | 1767 | #endif |
1768 | #ifndef DELAY_SLOTS | |
1769 | if (flag_delayed_branch) | |
c3ceba8e | 1770 | warning (0, "this target machine does not have delayed branches"); |
3bcb26d1 | 1771 | #endif |
1772 | ||
95c4b02a | 1773 | user_label_prefix = USER_LABEL_PREFIX; |
1774 | if (flag_leading_underscore != -1) | |
1775 | { | |
89a75961 | 1776 | /* If the default prefix is more complicated than "" or "_", |
95c4b02a | 1777 | issue a warning and ignore this option. */ |
1778 | if (user_label_prefix[0] == 0 || | |
1779 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
1780 | { | |
1781 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
1782 | } | |
1783 | else | |
c3ceba8e | 1784 | warning (0, "-f%sleading-underscore not supported on this target machine", |
95c4b02a | 1785 | flag_leading_underscore ? "" : "no-"); |
1786 | } | |
1787 | ||
3bcb26d1 | 1788 | /* If we are in verbose mode, write out the version and maybe all the |
1789 | option flags in use. */ | |
1790 | if (version_flag) | |
1791 | { | |
e87e2aa9 | 1792 | print_version (stderr, ""); |
3bcb26d1 | 1793 | if (! quiet_flag) |
7c6733e8 | 1794 | print_switch_values (print_to_stderr); |
3bcb26d1 | 1795 | } |
1796 | ||
9ceb1c29 | 1797 | if (flag_syntax_only) |
1798 | { | |
1799 | write_symbols = NO_DEBUG; | |
1800 | profile_flag = 0; | |
9ceb1c29 | 1801 | } |
3bcb26d1 | 1802 | |
b0e56fb1 | 1803 | /* A lot of code assumes write_symbols == NO_DEBUG if the debugging |
1804 | level is 0. */ | |
1805 | if (debug_info_level == DINFO_LEVEL_NONE) | |
1806 | write_symbols = NO_DEBUG; | |
1807 | ||
9ceb1c29 | 1808 | /* Now we know write_symbols, set up the debug hooks based on it. |
1809 | By default we do nothing for debug output. */ | |
ad469377 | 1810 | if (PREFERRED_DEBUGGING_TYPE == NO_DEBUG) |
1811 | default_debug_hooks = &do_nothing_debug_hooks; | |
1812 | #if defined(DBX_DEBUGGING_INFO) | |
1813 | else if (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG) | |
1814 | default_debug_hooks = &dbx_debug_hooks; | |
1815 | #endif | |
1816 | #if defined(XCOFF_DEBUGGING_INFO) | |
1817 | else if (PREFERRED_DEBUGGING_TYPE == XCOFF_DEBUG) | |
1818 | default_debug_hooks = &xcoff_debug_hooks; | |
1819 | #endif | |
1820 | #ifdef SDB_DEBUGGING_INFO | |
1821 | else if (PREFERRED_DEBUGGING_TYPE == SDB_DEBUG) | |
1822 | default_debug_hooks = &sdb_debug_hooks; | |
1823 | #endif | |
1824 | #ifdef DWARF2_DEBUGGING_INFO | |
1825 | else if (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG) | |
1826 | default_debug_hooks = &dwarf2_debug_hooks; | |
1827 | #endif | |
1828 | #ifdef VMS_DEBUGGING_INFO | |
1829 | else if (PREFERRED_DEBUGGING_TYPE == VMS_DEBUG | |
1830 | || PREFERRED_DEBUGGING_TYPE == VMS_AND_DWARF2_DEBUG) | |
1831 | default_debug_hooks = &vmsdbg_debug_hooks; | |
1832 | #endif | |
1833 | ||
b0e56fb1 | 1834 | if (write_symbols == NO_DEBUG) |
8b7af0c0 | 1835 | ; |
9ceb1c29 | 1836 | #if defined(DBX_DEBUGGING_INFO) |
b0e56fb1 | 1837 | else if (write_symbols == DBX_DEBUG) |
9ceb1c29 | 1838 | debug_hooks = &dbx_debug_hooks; |
3bcb26d1 | 1839 | #endif |
9ceb1c29 | 1840 | #if defined(XCOFF_DEBUGGING_INFO) |
b0e56fb1 | 1841 | else if (write_symbols == XCOFF_DEBUG) |
9ceb1c29 | 1842 | debug_hooks = &xcoff_debug_hooks; |
e87e2aa9 | 1843 | #endif |
9ceb1c29 | 1844 | #ifdef SDB_DEBUGGING_INFO |
b0e56fb1 | 1845 | else if (write_symbols == SDB_DEBUG) |
9ceb1c29 | 1846 | debug_hooks = &sdb_debug_hooks; |
1847 | #endif | |
9ceb1c29 | 1848 | #ifdef DWARF2_DEBUGGING_INFO |
b0e56fb1 | 1849 | else if (write_symbols == DWARF2_DEBUG) |
9ceb1c29 | 1850 | debug_hooks = &dwarf2_debug_hooks; |
e87e2aa9 | 1851 | #endif |
8d60d2bc | 1852 | #ifdef VMS_DEBUGGING_INFO |
b0e56fb1 | 1853 | else if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) |
8d60d2bc | 1854 | debug_hooks = &vmsdbg_debug_hooks; |
1855 | #endif | |
b0e56fb1 | 1856 | else |
1857 | error ("target system does not support the \"%s\" debug format", | |
1858 | debug_type_names[write_symbols]); | |
3bcb26d1 | 1859 | |
5923a5e7 | 1860 | /* Now we know which debug output will be used so we can set |
62434574 | 1861 | flag_var_tracking, flag_rename_registers if the user has |
ad469377 | 1862 | not specified them. */ |
1863 | if (debug_info_level < DINFO_LEVEL_NORMAL | |
1864 | || debug_hooks->var_location == do_nothing_debug_hooks.var_location) | |
5923a5e7 | 1865 | { |
d53bb226 | 1866 | if (flag_var_tracking == 1 |
1867 | || flag_var_tracking_uninit == 1) | |
ad469377 | 1868 | { |
1869 | if (debug_info_level < DINFO_LEVEL_NORMAL) | |
c3ceba8e | 1870 | warning (0, "variable tracking requested, but useless unless " |
ad469377 | 1871 | "producing debug info"); |
1872 | else | |
c3ceba8e | 1873 | warning (0, "variable tracking requested, but not supported " |
ad469377 | 1874 | "by this debug format"); |
1875 | } | |
1876 | flag_var_tracking = 0; | |
d53bb226 | 1877 | flag_var_tracking_uninit = 0; |
5923a5e7 | 1878 | } |
1879 | ||
472cd78a | 1880 | if (flag_rename_registers == AUTODETECT_VALUE) |
ad469377 | 1881 | flag_rename_registers = default_debug_hooks->var_location |
1882 | != do_nothing_debug_hooks.var_location; | |
1883 | ||
472cd78a | 1884 | if (flag_var_tracking == AUTODETECT_VALUE) |
ad469377 | 1885 | flag_var_tracking = optimize >= 1; |
1886 | ||
e6d0e152 | 1887 | if (flag_tree_cselim == AUTODETECT_VALUE) |
1888 | #ifdef HAVE_conditional_move | |
1889 | flag_tree_cselim = 1; | |
1890 | #else | |
1891 | flag_tree_cselim = 0; | |
1892 | #endif | |
1893 | ||
d53bb226 | 1894 | /* If the user specifically requested variable tracking with tagging |
1895 | uninitialized variables, we need to turn on variable tracking. | |
1896 | (We already determined above that variable tracking is feasible.) */ | |
1897 | if (flag_var_tracking_uninit) | |
1898 | flag_var_tracking = 1; | |
1899 | ||
9ceb1c29 | 1900 | /* If auxiliary info generation is desired, open the output file. |
1901 | This goes in the same directory as the source file--unlike | |
1902 | all the other output files. */ | |
1903 | if (flag_gen_aux_info) | |
1904 | { | |
1905 | aux_info_file = fopen (aux_info_file_name, "w"); | |
1906 | if (aux_info_file == 0) | |
eb586f2c | 1907 | fatal_error ("can%'t open %s: %m", aux_info_file_name); |
9ceb1c29 | 1908 | } |
56a44361 | 1909 | |
9ceb1c29 | 1910 | if (! targetm.have_named_sections) |
3bcb26d1 | 1911 | { |
9ceb1c29 | 1912 | if (flag_function_sections) |
1913 | { | |
c3ceba8e | 1914 | warning (0, "-ffunction-sections not supported for this target"); |
9ceb1c29 | 1915 | flag_function_sections = 0; |
1916 | } | |
1917 | if (flag_data_sections) | |
1918 | { | |
c3ceba8e | 1919 | warning (0, "-fdata-sections not supported for this target"); |
9ceb1c29 | 1920 | flag_data_sections = 0; |
1921 | } | |
3bcb26d1 | 1922 | } |
9ceb1c29 | 1923 | |
644a1400 | 1924 | if (flag_function_sections && profile_flag) |
e87e2aa9 | 1925 | { |
c3ceba8e | 1926 | warning (0, "-ffunction-sections disabled; it makes profiling impossible"); |
9ceb1c29 | 1927 | flag_function_sections = 0; |
e87e2aa9 | 1928 | } |
9ceb1c29 | 1929 | |
ba38e12b | 1930 | #ifndef HAVE_prefetch |
1931 | if (flag_prefetch_loop_arrays) | |
1932 | { | |
c3ceba8e | 1933 | warning (0, "-fprefetch-loop-arrays not supported for this target"); |
ba38e12b | 1934 | flag_prefetch_loop_arrays = 0; |
1935 | } | |
1936 | #else | |
1937 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
1938 | { | |
c3ceba8e | 1939 | warning (0, "-fprefetch-loop-arrays not supported for this target (try -march switches)"); |
ba38e12b | 1940 | flag_prefetch_loop_arrays = 0; |
1941 | } | |
1942 | #endif | |
1943 | ||
9544445b | 1944 | /* This combination of options isn't handled for i386 targets and doesn't |
1945 | make much sense anyway, so don't allow it. */ | |
1946 | if (flag_prefetch_loop_arrays && optimize_size) | |
1947 | { | |
c3ceba8e | 1948 | warning (0, "-fprefetch-loop-arrays is not supported with -Os"); |
9544445b | 1949 | flag_prefetch_loop_arrays = 0; |
1950 | } | |
1951 | ||
4ee9c684 | 1952 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ |
1953 | if (flag_signaling_nans) | |
1954 | flag_trapping_math = 1; | |
45b9d334 | 1955 | |
4a2a1c11 | 1956 |