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Commit | Line | Data |
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4291d9c8 | 1 | /* Top level of GNU C compiler |
4559fd9e | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
223b87b6 | 3 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
4291d9c8 | 4 | |
1322177d | 5 | This file is part of GCC. |
4291d9c8 | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
4291d9c8 | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
4291d9c8 RS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
4291d9c8 | 21 | |
4291d9c8 RS |
22 | /* This is the top level of cc1/c++. |
23 | It parses command args, opens files, invokes the various passes | |
24 | in the proper order, and counts the time used by each. | |
25 | Error messages and low-level interface to malloc also handled here. */ | |
26 | ||
27 | #include "config.h" | |
670ee920 KG |
28 | #undef FLOAT /* This is for hpux. They should change hpux. */ |
29 | #undef FFS /* Some systems define this in param.h. */ | |
30 | #include "system.h" | |
4977bab6 ZW |
31 | #include "coretypes.h" |
32 | #include "tm.h" | |
4291d9c8 | 33 | #include <signal.h> |
956d6950 JL |
34 | |
35 | #ifdef HAVE_SYS_RESOURCE_H | |
36 | # include <sys/resource.h> | |
37 | #endif | |
38 | ||
39 | #ifdef HAVE_SYS_TIMES_H | |
40 | # include <sys/times.h> | |
eb910b5a | 41 | #endif |
4291d9c8 RS |
42 | |
43 | #include "input.h" | |
44 | #include "tree.h" | |
4291d9c8 | 45 | #include "rtl.h" |
6baf1cc8 | 46 | #include "tm_p.h" |
4291d9c8 RS |
47 | #include "flags.h" |
48 | #include "insn-attr.h" | |
e5e809f4 | 49 | #include "insn-config.h" |
0dd0e980 | 50 | #include "insn-flags.h" |
23280139 | 51 | #include "hard-reg-set.h" |
e5e809f4 | 52 | #include "recog.h" |
e14417fa | 53 | #include "output.h" |
3d195391 | 54 | #include "except.h" |
49ad7cfa | 55 | #include "function.h" |
a0c8e1b2 | 56 | #include "toplev.h" |
114791ea | 57 | #include "expr.h" |
b1eeb243 | 58 | #include "basic-block.h" |
ab87f8c8 | 59 | #include "intl.h" |
0a25f1f5 | 60 | #include "ggc.h" |
6a2cc2ac | 61 | #include "graph.h" |
272df862 | 62 | #include "loop.h" |
d0af450d | 63 | #include "regs.h" |
2a9a326b | 64 | #include "timevar.h" |
764dbbf2 | 65 | #include "diagnostic.h" |
b53978a3 | 66 | #include "ssa.h" |
c6d9a88c | 67 | #include "params.h" |
8461e984 | 68 | #include "reload.h" |
5262d6b6 | 69 | #include "dwarf2asm.h" |
c0e7830f | 70 | #include "integrate.h" |
efdc7e19 | 71 | #include "real.h" |
a51d908e | 72 | #include "debug.h" |
7c262518 | 73 | #include "target.h" |
d23c55c2 | 74 | #include "langhooks.h" |
0478a14c | 75 | #include "cfglayout.h" |
3d436d2a | 76 | #include "cfgloop.h" |
476d9098 | 77 | #include "hosthooks.h" |
f246a305 | 78 | |
76ead72b RL |
79 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
80 | #include "dwarf2out.h" | |
81 | #endif | |
82 | ||
4f70758f | 83 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
84 | #include "dbxout.h" |
85 | #endif | |
86 | ||
87 | #ifdef SDB_DEBUGGING_INFO | |
88 | #include "sdbout.h" | |
89 | #endif | |
440aabf8 NB |
90 | |
91 | #ifdef XCOFF_DEBUGGING_INFO | |
92 | #include "xcoffout.h" /* Needed for external data | |
93 | declarations for e.g. AIX 4.x. */ | |
94 | #endif | |
4291d9c8 | 95 | \f |
b0316e35 RS |
96 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
97 | to ASM_FINISH_DECLARE_OBJECT. */ | |
98 | ||
99 | extern int size_directive_output; | |
5e10b3cc | 100 | extern tree last_assemble_variable_decl; |
b0316e35 | 101 | |
ed8d2920 MM |
102 | extern void reg_alloc PARAMS ((void)); |
103 | ||
f5e99456 | 104 | static void general_init PARAMS ((char *)); |
c79043f3 | 105 | static void parse_options_and_default_flags PARAMS ((int, char **)); |
b1cbe78c | 106 | static void do_compile PARAMS ((int)); |
f5e99456 | 107 | static void process_options PARAMS ((void)); |
c79043f3 | 108 | static void backend_init PARAMS ((void)); |
22703ccc | 109 | static int lang_dependent_init PARAMS ((const char *)); |
f5e99456 | 110 | static void init_asm_output PARAMS ((const char *)); |
22703ccc | 111 | static void finalize PARAMS ((void)); |
f5e99456 | 112 | |
58782098 | 113 | static void set_target_switch PARAMS ((const char *)); |
6ed551b4 | 114 | |
a7023245 | 115 | static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN; |
886e0865 | 116 | static void setup_core_dumping PARAMS ((void)); |
f5e99456 | 117 | static void compile_file PARAMS ((void)); |
58782098 | 118 | static void display_help PARAMS ((void)); |
10501d8f | 119 | static void display_target_options PARAMS ((void)); |
58782098 KG |
120 | |
121 | static void decode_d_option PARAMS ((const char *)); | |
61098249 RH |
122 | static int decode_f_option PARAMS ((const char *)); |
123 | static int decode_W_option PARAMS ((const char *)); | |
124 | static int decode_g_option PARAMS ((const char *)); | |
319ea138 | 125 | static unsigned int independent_decode_option PARAMS ((int, char **)); |
58782098 KG |
126 | |
127 | static void print_version PARAMS ((FILE *, const char *)); | |
128 | static int print_single_switch PARAMS ((FILE *, int, int, const char *, | |
87e11268 KG |
129 | const char *, const char *, |
130 | const char *, const char *)); | |
58782098 | 131 | static void print_switch_values PARAMS ((FILE *, int, int, const char *, |
87e11268 | 132 | const char *, const char *)); |
735a0e33 | 133 | |
ff45c01e NB |
134 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
135 | static int set_yydebug; | |
136 | ||
3d5cdd42 DE |
137 | /* Length of line when printing switch values. */ |
138 | #define MAX_LINE 75 | |
139 | ||
4291d9c8 RS |
140 | /* Name of program invoked, sans directories. */ |
141 | ||
7adfcfed | 142 | const char *progname; |
4291d9c8 | 143 | |
aa5b94de | 144 | /* Copy of arguments to toplev_main. */ |
4291d9c8 RS |
145 | int save_argc; |
146 | char **save_argv; | |
147 | \f | |
148 | /* Name of current original source file (what was input to cpp). | |
149 | This comes from each #-command in the actual input. */ | |
150 | ||
3b304f5b | 151 | const char *input_filename; |
4291d9c8 RS |
152 | |
153 | /* Name of top-level original source file (what was input to cpp). | |
154 | This comes from the #-command at the beginning of the actual input. | |
155 | If there isn't any there, then this is the cc1 input file name. */ | |
156 | ||
3b304f5b | 157 | const char *main_input_filename; |
4291d9c8 | 158 | |
4291d9c8 RS |
159 | /* Current line number in real source file. */ |
160 | ||
161 | int lineno; | |
162 | ||
f1db3576 JL |
163 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
164 | int no_new_pseudos; | |
165 | ||
4291d9c8 RS |
166 | /* Stack of currently pending input files. */ |
167 | ||
168 | struct file_stack *input_file_stack; | |
169 | ||
170 | /* Incremented on each change to input_file_stack. */ | |
171 | int input_file_stack_tick; | |
172 | ||
4291d9c8 RS |
173 | /* Name to use as base of names for dump output files. */ |
174 | ||
87e11268 | 175 | const char *dump_base_name; |
4291d9c8 | 176 | |
ea67fe71 NS |
177 | /* Name to use as a base for auxiliary output files. */ |
178 | ||
b1cbe78c | 179 | static const char *aux_base_name; |
ea67fe71 | 180 | |
6baf9874 DR |
181 | /* Format to use to print dumpfile index value */ |
182 | #ifndef DUMPFILE_FORMAT | |
183 | #define DUMPFILE_FORMAT ".%02d." | |
184 | #endif | |
185 | ||
4291d9c8 RS |
186 | /* Bit flags that specify the machine subtype we are compiling for. |
187 | Bits are tested using macros TARGET_... defined in the tm.h file | |
188 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
189 | ||
190 | extern int target_flags; | |
191 | ||
a27fb29b RS |
192 | /* A mask of target_flags that includes bit X if X was set or cleared |
193 | on the command line. */ | |
194 | ||
195 | int target_flags_explicit; | |
196 | ||
a51d908e NB |
197 | /* Debug hooks - dependent upon command line options. */ |
198 | ||
54b6670a | 199 | const struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks; |
a51d908e | 200 | |
61098249 RH |
201 | /* Describes a dump file. */ |
202 | ||
203 | struct dump_file_info | |
204 | { | |
205 | /* The unique extension to apply, e.g. ".jump". */ | |
854a97f0 | 206 | const char *const extension; |
61098249 RH |
207 | |
208 | /* The -d<c> character that enables this dump file. */ | |
209 | char const debug_switch; | |
210 | ||
211 | /* True if there is a corresponding graph dump file. */ | |
212 | char const graph_dump_p; | |
213 | ||
214 | /* True if the user selected this dump. */ | |
215 | char enabled; | |
216 | ||
217 | /* True if the files have been initialized (ie truncated). */ | |
218 | char initialized; | |
219 | }; | |
220 | ||
221 | /* Enumerate the extant dump files. */ | |
222 | ||
223 | enum dump_file_index | |
224 | { | |
225 | DFI_rtl, | |
48d9ade5 | 226 | DFI_sibling, |
52a11cbf | 227 | DFI_eh, |
61098249 | 228 | DFI_jump, |
61098249 | 229 | DFI_ssa, |
0b47e4c1 | 230 | DFI_ssa_ccp, |
62d285ff | 231 | DFI_ssa_dce, |
61098249 | 232 | DFI_ussa, |
38c1593d | 233 | DFI_null, |
0826f1d8 JL |
234 | DFI_cse, |
235 | DFI_addressof, | |
61098249 RH |
236 | DFI_gcse, |
237 | DFI_loop, | |
a0134312 | 238 | DFI_bypass, |
51891abe | 239 | DFI_cfg, |
61098249 | 240 | DFI_bp, |
0fb53e68 | 241 | DFI_ce1, |
5c856b23 | 242 | DFI_tracer, |
617b465c | 243 | DFI_loop2, |
38c1593d | 244 | DFI_cse2, |
51891abe | 245 | DFI_life, |
61098249 | 246 | DFI_combine, |
0fb53e68 | 247 | DFI_ce2, |
61098249 RH |
248 | DFI_regmove, |
249 | DFI_sched, | |
250 | DFI_lreg, | |
251 | DFI_greg, | |
8bb16620 | 252 | DFI_postreload, |
61098249 RH |
253 | DFI_flow2, |
254 | DFI_peephole2, | |
5fa41e13 | 255 | DFI_rnreg, |
0fb53e68 | 256 | DFI_ce3, |
b9422b69 | 257 | DFI_bbro, |
61098249 | 258 | DFI_sched2, |
1e5fd094 | 259 | DFI_stack, |
61098249 RH |
260 | DFI_mach, |
261 | DFI_dbr, | |
61098249 RH |
262 | DFI_MAX |
263 | }; | |
264 | ||
265 | /* Describes all the dump files. Should be kept in order of the | |
9ec6d7ab RH |
266 | pass and in sync with dump_file_index above. |
267 | ||
268 | Remaining -d letters: | |
269 | ||
38c1593d | 270 | " o q " |
1e5fd094 | 271 | " H JK OPQ TUV YZ" |
9ec6d7ab | 272 | */ |
61098249 | 273 | |
c083a819 | 274 | static struct dump_file_info dump_file[DFI_MAX] = |
61098249 RH |
275 | { |
276 | { "rtl", 'r', 0, 0, 0 }, | |
48d9ade5 | 277 | { "sibling", 'i', 0, 0, 0 }, |
52a11cbf | 278 | { "eh", 'h', 0, 0, 0 }, |
61098249 | 279 | { "jump", 'j', 0, 0, 0 }, |
61098249 | 280 | { "ssa", 'e', 1, 0, 0 }, |
0b47e4c1 | 281 | { "ssaccp", 'W', 1, 0, 0 }, |
62d285ff | 282 | { "ssadce", 'X', 1, 0, 0 }, |
61098249 | 283 | { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
38c1593d | 284 | { "null", 'u', 0, 0, 0 }, |
0826f1d8 JL |
285 | { "cse", 's', 0, 0, 0 }, |
286 | { "addressof", 'F', 0, 0, 0 }, | |
61098249 RH |
287 | { "gcse", 'G', 1, 0, 0 }, |
288 | { "loop", 'L', 1, 0, 0 }, | |
a0134312 | 289 | { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
51891abe | 290 | { "cfg", 'f', 1, 0, 0 }, |
61098249 | 291 | { "bp", 'b', 1, 0, 0 }, |
a9a4005f | 292 | { "ce1", 'C', 1, 0, 0 }, |
5c856b23 | 293 | { "tracer", 'T', 1, 0, 0 }, |
617b465c | 294 | { "loop2", 'L', 1, 0, 0 }, |
38c1593d | 295 | { "cse2", 't', 1, 0, 0 }, |
51891abe | 296 | { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 297 | { "combine", 'c', 1, 0, 0 }, |
0fb53e68 | 298 | { "ce2", 'C', 1, 0, 0 }, |
61098249 RH |
299 | { "regmove", 'N', 1, 0, 0 }, |
300 | { "sched", 'S', 1, 0, 0 }, | |
301 | { "lreg", 'l', 1, 0, 0 }, | |
302 | { "greg", 'g', 1, 0, 0 }, | |
8bb16620 | 303 | { "postreload", 'o', 1, 0, 0 }, |
61098249 RH |
304 | { "flow2", 'w', 1, 0, 0 }, |
305 | { "peephole2", 'z', 1, 0, 0 }, | |
5fa41e13 | 306 | { "rnreg", 'n', 1, 0, 0 }, |
0fb53e68 | 307 | { "ce3", 'E', 1, 0, 0 }, |
b9422b69 | 308 | { "bbro", 'B', 1, 0, 0 }, |
61098249 | 309 | { "sched2", 'R', 1, 0, 0 }, |
1e5fd094 | 310 | { "stack", 'k', 1, 0, 0 }, |
61098249 RH |
311 | { "mach", 'M', 1, 0, 0 }, |
312 | { "dbr", 'd', 0, 0, 0 }, | |
61098249 RH |
313 | }; |
314 | ||
315 | static int open_dump_file PARAMS ((enum dump_file_index, tree)); | |
316 | static void close_dump_file PARAMS ((enum dump_file_index, | |
317 | void (*) (FILE *, rtx), rtx)); | |
318 | ||
319 | /* Other flags saying which kinds of debugging dump have been requested. */ | |
320 | ||
321 | int rtl_dump_and_exit; | |
322 | int flag_print_asm_name; | |
61098249 | 323 | static int version_flag; |
b1cbe78c | 324 | static const char *filename; |
735a0e33 | 325 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
326 | |
327 | /* Name for output file of assembly code, specified with -o. */ | |
328 | ||
329 | char *asm_file_name; | |
330 | ||
331 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
332 | int g_switch_value; | |
333 | int g_switch_set; | |
334 | ||
335 | /* Type(s) of debugging information we are producing (if any). | |
336 | See flags.h for the definitions of the different possible | |
337 | types of debugging information. */ | |
338 | enum debug_info_type write_symbols = NO_DEBUG; | |
339 | ||
340 | /* Level of debugging information we are producing. See flags.h | |
341 | for the definitions of the different possible levels. */ | |
342 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
343 | ||
a53d0bcc RS |
344 | /* Nonzero means use GNU-only extensions in the generated symbolic |
345 | debugging information. */ | |
346 | /* Currently, this only has an effect when write_symbols is set to | |
347 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
348 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
349 | |
350 | /* Nonzero means do optimizations. -O. | |
351 | Particular numeric values stand for particular amounts of optimization; | |
352 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
353 | ones are not controlled directly by this variable. Instead, they are | |
354 | controlled by individual `flag_...' variables that are defaulted | |
355 | based on this variable. */ | |
356 | ||
357 | int optimize = 0; | |
358 | ||
c6aded7c | 359 | /* Nonzero means optimize for size. -Os. |
0e9e1e0a KH |
360 | The only valid values are zero and nonzero. When optimize_size is |
361 | nonzero, optimize defaults to 2, but certain individual code | |
c6aded7c AG |
362 | bloating optimizations are disabled. */ |
363 | ||
364 | int optimize_size = 0; | |
365 | ||
cb773845 ZW |
366 | /* Nonzero if we should exit after parsing options. */ |
367 | static int exit_after_options = 0; | |
368 | ||
00262c8a ML |
369 | /* The FUNCTION_DECL for the function currently being compiled, |
370 | or 0 if between functions. */ | |
371 | tree current_function_decl; | |
372 | ||
373 | /* Set to the FUNC_BEGIN label of the current function, or NULL_TREE | |
374 | if none. */ | |
375 | tree current_function_func_begin_label; | |
376 | ||
881c6935 JM |
377 | /* Nonzero if doing dwarf2 duplicate elimination. */ |
378 | ||
379 | int flag_eliminate_dwarf2_dups = 0; | |
380 | ||
73c68f61 SS |
381 | /* Nonzero if doing unused type elimination. */ |
382 | ||
9552a3e3 | 383 | int flag_eliminate_unused_debug_types = 1; |
73c68f61 | 384 | |
4291d9c8 RS |
385 | /* Nonzero if generating code to do profiling. */ |
386 | ||
387 | int profile_flag = 0; | |
388 | ||
0d332add DE |
389 | /* Nonzero if generating code to profile program flow graph arcs. */ |
390 | ||
391 | int profile_arc_flag = 0; | |
392 | ||
393 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
394 | ||
395 | int flag_test_coverage = 0; | |
396 | ||
397 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
398 | ||
399 | int flag_branch_probabilities = 0; | |
400 | ||
854a97f0 | 401 | /* Nonzero if basic blocks should be reordered. */ |
11bdd2ae SC |
402 | |
403 | int flag_reorder_blocks = 0; | |
404 | ||
194734e9 JH |
405 | /* Nonzero if functions should be reordered. */ |
406 | ||
407 | int flag_reorder_functions = 0; | |
408 | ||
854a97f0 | 409 | /* Nonzero if registers should be renamed. */ |
7b82b5da SC |
410 | |
411 | int flag_rename_registers = 0; | |
8582c27b | 412 | int flag_cprop_registers = 0; |
7b82b5da | 413 | |
4291d9c8 RS |
414 | /* Nonzero for -pedantic switch: warn about anything |
415 | that standard spec forbids. */ | |
416 | ||
417 | int pedantic = 0; | |
418 | ||
419 | /* Temporarily suppress certain warnings. | |
420 | This is set while reading code from a system header file. */ | |
421 | ||
422 | int in_system_header = 0; | |
423 | ||
fba0bfd4 | 424 | /* Don't print functions as they are compiled. -quiet. */ |
4291d9c8 RS |
425 | |
426 | int quiet_flag = 0; | |
fba0bfd4 ZW |
427 | |
428 | /* Print times taken by the various passes. -ftime-report. */ | |
429 | ||
430 | int time_report = 0; | |
431 | ||
432 | /* Print memory still in use at end of compilation (which may have little | |
433 | to do with peak memory consumption). -fmem-report. */ | |
434 | ||
435 | int mem_report = 0; | |
436 | ||
272d0bee | 437 | /* Nonzero means to collect statistics which might be expensive |
0e5921e8 ZW |
438 | and to print them when we are done. */ |
439 | int flag_detailed_statistics = 0; | |
440 | ||
4291d9c8 RS |
441 | \f |
442 | /* -f flags. */ | |
443 | ||
444 | /* Nonzero means `char' should be signed. */ | |
445 | ||
446 | int flag_signed_char; | |
447 | ||
448 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
449 | ||
450 | int flag_short_enums; | |
451 | ||
452 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
453 | be saved across function calls, if that produces overall better code. | |
454 | Optional now, so people can test it. */ | |
455 | ||
456 | #ifdef DEFAULT_CALLER_SAVES | |
457 | int flag_caller_saves = 1; | |
458 | #else | |
459 | int flag_caller_saves = 0; | |
460 | #endif | |
461 | ||
958ec8ca JW |
462 | /* Nonzero if structures and unions should be returned in memory. |
463 | ||
464 | This should only be defined if compatibility with another compiler or | |
465 | with an ABI is needed, because it results in slower code. */ | |
466 | ||
467 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
468 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
469 | #endif | |
470 | ||
4291d9c8 RS |
471 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
472 | ||
958ec8ca | 473 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
474 | |
475 | /* Nonzero for -fforce-mem: load memory value into a register | |
476 | before arithmetic on it. This makes better cse but slower compilation. */ | |
477 | ||
478 | int flag_force_mem = 0; | |
479 | ||
480 | /* Nonzero for -fforce-addr: load memory address into a register before | |
481 | reference to memory. This makes better cse but slower compilation. */ | |
482 | ||
483 | int flag_force_addr = 0; | |
484 | ||
485 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
486 | instead save them up to pop many calls' args with one insns. */ | |
487 | ||
6731a3e3 | 488 | int flag_defer_pop = 0; |
4291d9c8 RS |
489 | |
490 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
491 | in extended-precision registers. */ | |
492 | ||
493 | int flag_float_store = 0; | |
494 | ||
495 | /* Nonzero for -fcse-follow-jumps: | |
496 | have cse follow jumps to do a more extensive job. */ | |
497 | ||
498 | int flag_cse_follow_jumps; | |
499 | ||
8b3686ed RK |
500 | /* Nonzero for -fcse-skip-blocks: |
501 | have cse follow a branch around a block. */ | |
502 | int flag_cse_skip_blocks; | |
503 | ||
4291d9c8 RS |
504 | /* Nonzero for -fexpensive-optimizations: |
505 | perform miscellaneous relatively-expensive optimizations. */ | |
506 | int flag_expensive_optimizations; | |
507 | ||
508 | /* Nonzero for -fthread-jumps: | |
509 | have jump optimize output of loop. */ | |
510 | ||
511 | int flag_thread_jumps; | |
512 | ||
513 | /* Nonzero enables strength-reduction in loop.c. */ | |
514 | ||
515 | int flag_strength_reduce = 0; | |
516 | ||
517 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
518 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
519 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
520 | unrolled. */ | |
521 | ||
b17d5d7c | 522 | int flag_old_unroll_loops; |
4291d9c8 RS |
523 | |
524 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
525 | This is generally not a win. */ | |
526 | ||
b17d5d7c ZD |
527 | int flag_old_unroll_all_loops; |
528 | ||
529 | /* Enables unrolling of simple loops in loop-unroll.c. */ | |
530 | int flag_unroll_loops; | |
531 | ||
532 | /* Enables unrolling of all loops in loop-unroll.c. */ | |
4291d9c8 RS |
533 | int flag_unroll_all_loops; |
534 | ||
b17d5d7c ZD |
535 | /* Nonzero enables loop peeling. */ |
536 | int flag_peel_loops; | |
537 | ||
617b465c ZD |
538 | /* Nonzero enables loop unswitching. */ |
539 | int flag_unswitch_loops; | |
540 | ||
0dd0e980 JH |
541 | /* Nonzero enables prefetch optimizations for arrays in loops. */ |
542 | ||
543 | int flag_prefetch_loop_arrays; | |
544 | ||
e5eb27e5 | 545 | /* Nonzero forces all invariant computations in loops to be moved |
854a97f0 | 546 | outside the loop. */ |
e5eb27e5 JL |
547 | |
548 | int flag_move_all_movables = 0; | |
549 | ||
550 | /* Nonzero forces all general induction variables in loops to be | |
854a97f0 | 551 | strength reduced. */ |
e5eb27e5 JL |
552 | |
553 | int flag_reduce_all_givs = 0; | |
554 | ||
9ec36da5 JL |
555 | /* Nonzero to perform full register move optimization passes. This is the |
556 | default for -O2. */ | |
557 | ||
558 | int flag_regmove = 0; | |
559 | ||
4291d9c8 RS |
560 | /* Nonzero for -fwritable-strings: |
561 | store string constants in data segment and don't uniquize them. */ | |
562 | ||
563 | int flag_writable_strings = 0; | |
564 | ||
565 | /* Nonzero means don't put addresses of constant functions in registers. | |
566 | Used for compiling the Unix kernel, where strange substitutions are | |
567 | done on the assembly output. */ | |
568 | ||
569 | int flag_no_function_cse = 0; | |
570 | ||
571 | /* Nonzero for -fomit-frame-pointer: | |
572 | don't make a frame pointer in simple functions that don't require one. */ | |
573 | ||
574 | int flag_omit_frame_pointer = 0; | |
575 | ||
cf440348 JL |
576 | /* Nonzero means place each function into its own section on those platforms |
577 | which support arbitrary section names and unlimited numbers of sections. */ | |
578 | ||
579 | int flag_function_sections = 0; | |
580 | ||
fd868572 | 581 | /* ... and similar for data. */ |
854a97f0 | 582 | |
fd868572 CM |
583 | int flag_data_sections = 0; |
584 | ||
4291d9c8 RS |
585 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
586 | ||
587 | int flag_no_peephole = 0; | |
588 | ||
db8cb48e JH |
589 | /* Nonzero allows GCC to optimize sibling and tail recursive calls. */ |
590 | ||
591 | int flag_optimize_sibling_calls = 0; | |
592 | ||
41af162c | 593 | /* Nonzero means the front end generally wants `errno' maintained by math |
de6c5979 | 594 | operations, like built-in SQRT. */ |
41af162c CB |
595 | |
596 | int flag_errno_math = 1; | |
597 | ||
de6c5979 BL |
598 | /* Nonzero means that unsafe floating-point math optimizations are allowed |
599 | for the sake of speed. IEEE compliance is not guaranteed, and operations | |
600 | are allowed to assume that their arguments and results are "normal" | |
601 | (e.g., nonnegative for SQRT). */ | |
602 | ||
603 | int flag_unsafe_math_optimizations = 0; | |
604 | ||
2e8f2e8f TM |
605 | /* Nonzero means that no NaNs or +-Infs are expected. */ |
606 | ||
607 | int flag_finite_math_only = 0; | |
608 | ||
de6c5979 BL |
609 | /* Zero means that floating-point math operations cannot generate a |
610 | (user-visible) trap. This is the case, for example, in nonstop | |
52bfebf0 | 611 | IEEE 754 arithmetic. Trapping conditions include division by zero, |
26182e15 | 612 | overflow, underflow, invalid and inexact, but does not include |
52bfebf0 | 613 | operations on signaling NaNs (see below). */ |
de6c5979 BL |
614 | |
615 | int flag_trapping_math = 1; | |
616 | ||
52bfebf0 RS |
617 | /* Nonzero means disable transformations observable by signaling NaNs. |
618 | This option implies that any operation on a IEEE signaling NaN can | |
619 | generate a (user-visible) trap. */ | |
620 | ||
621 | int flag_signaling_nans = 0; | |
622 | ||
c64f913e CB |
623 | /* 0 means straightforward implementation of complex divide acceptable. |
624 | 1 means wide ranges of inputs must work for complex divide. | |
526aba28 | 625 | 2 means C99-like requirements for complex divide (not yet implemented). */ |
c64f913e CB |
626 | |
627 | int flag_complex_divide_method = 0; | |
628 | ||
4291d9c8 RS |
629 | /* Nonzero means just do syntax checking; don't output anything. */ |
630 | ||
631 | int flag_syntax_only = 0; | |
632 | ||
96327cdc JH |
633 | /* Nonzero means perform loop optimizer. */ |
634 | ||
635 | static int flag_loop_optimize; | |
636 | ||
637 | /* Nonzero means perform crossjumping. */ | |
638 | ||
639 | static int flag_crossjumping; | |
640 | ||
2c4b77f3 JH |
641 | /* Nonzero means perform if conversion. */ |
642 | ||
643 | static int flag_if_conversion; | |
644 | ||
645 | /* Nonzero means perform if conversion after reload. */ | |
646 | ||
647 | static int flag_if_conversion2; | |
648 | ||
b6d24183 JL |
649 | /* Nonzero means to use global dataflow analysis to eliminate |
650 | useless null pointer tests. */ | |
651 | ||
652 | static int flag_delete_null_pointer_checks; | |
653 | ||
34ee7f82 RS |
654 | /* Nonzero means perform global CSE. */ |
655 | ||
656 | int flag_gcse = 0; | |
657 | ||
a13d4ebf AM |
658 | /* Nonzero means to do the enhanced load motion during gcse, which trys |
659 | to hoist loads by not killing them when a store to the same location | |
660 | is seen. */ | |
661 | ||
662 | int flag_gcse_lm = 1; | |
663 | ||
664 | /* Nonzero means to perform store motion after gcse, which will try to | |
665 | move stores closer to the exit block. Its not very effective without | |
666 | flag_gcse_lm. */ | |
667 | ||
668 | int flag_gcse_sm = 1; | |
669 | ||
4291d9c8 RS |
670 | /* Nonzero means to rerun cse after loop optimization. This increases |
671 | compilation time about 20% and picks up a few more common expressions. */ | |
672 | ||
673 | static int flag_rerun_cse_after_loop; | |
674 | ||
6d6d0fa0 JL |
675 | /* Nonzero means to run loop optimizations twice. */ |
676 | ||
64fde701 | 677 | int flag_rerun_loop_opt; |
6d6d0fa0 | 678 | |
4291d9c8 RS |
679 | /* Nonzero for -finline-functions: ok to inline functions that look like |
680 | good inline candidates. */ | |
681 | ||
682 | int flag_inline_functions; | |
683 | ||
684 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 685 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
686 | purposes. */ |
687 | ||
688 | int flag_keep_inline_functions; | |
689 | ||
fadb3bc9 | 690 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 | 691 | |
b0148884 | 692 | int flag_no_inline = 2; |
4291d9c8 | 693 | |
2cb921f4 AH |
694 | /* Nonzero means that we don't want inlining by virtue of -fno-inline, |
695 | not just because the tree inliner turned us off. */ | |
696 | ||
b0148884 | 697 | int flag_really_no_inline = 2; |
2cb921f4 | 698 | |
fbe912dd BK |
699 | /* Nonzero means that we should emit static const variables |
700 | regardless of whether or not optimization is turned on. */ | |
701 | ||
702 | int flag_keep_static_consts = 1; | |
703 | ||
4291d9c8 RS |
704 | /* Nonzero means we should be saving declaration info into a .X file. */ |
705 | ||
706 | int flag_gen_aux_info = 0; | |
707 | ||
f246a305 RS |
708 | /* Specified name of aux-info file. */ |
709 | ||
710 | static char *aux_info_file_name; | |
711 | ||
4291d9c8 RS |
712 | /* Nonzero means make the text shared if supported. */ |
713 | ||
714 | int flag_shared_data; | |
715 | ||
716 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
717 | ||
718 | int flag_delayed_branch; | |
719 | ||
720 | /* Nonzero if we are compiling pure (sharable) code. | |
3d78f2e9 RH |
721 | Value is 1 if we are doing "small" pic; value is 2 if we're doing |
722 | "large" pic. */ | |
4291d9c8 RS |
723 | |
724 | int flag_pic; | |
725 | ||
3d78f2e9 RH |
726 | /* Set to the default thread-local storage (tls) model to use. */ |
727 | ||
755ac5d4 | 728 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
3d78f2e9 | 729 | |
3d195391 MS |
730 | /* Nonzero means generate extra code for exception handling and enable |
731 | exception handling. */ | |
732 | ||
b53beeb2 | 733 | int flag_exceptions; |
3d195391 | 734 | |
854a97f0 | 735 | /* Nonzero means generate frame unwind info table when supported. */ |
14a774a9 RK |
736 | |
737 | int flag_unwind_tables = 0; | |
738 | ||
b932f770 JH |
739 | /* Nonzero means generate frame unwind info table exact at each insn boundary */ |
740 | ||
741 | int flag_asynchronous_unwind_tables = 0; | |
742 | ||
2786cbad | 743 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 744 | by default. */ |
4291d9c8 RS |
745 | |
746 | int flag_no_common; | |
747 | ||
4291d9c8 RS |
748 | /* Nonzero means change certain warnings into errors. |
749 | Usually these are warnings about failure to conform to some standard. */ | |
750 | ||
751 | int flag_pedantic_errors = 0; | |
752 | ||
753 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
754 | local_alloc). | |
755 | flag_schedule_insns_after_reload means schedule insns after | |
756 | global_alloc. */ | |
757 | ||
758 | int flag_schedule_insns = 0; | |
759 | int flag_schedule_insns_after_reload = 0; | |
760 | ||
b9422b69 JH |
761 | /* When flag_schedule_insns_after_reload is set, use EBB scheduler. */ |
762 | int flag_sched2_use_superblocks = 0; | |
763 | ||
764 | /* When flag_schedule_insns_after_reload is set, construct traces and EBB | |
765 | scheduler. */ | |
766 | int flag_sched2_use_traces = 0; | |
767 | ||
8c660648 JL |
768 | /* The following flags have effect only for scheduling before register |
769 | allocation: | |
770 | ||
14b493d6 | 771 | flag_schedule_interblock means schedule insns across basic blocks. |
8c660648 JL |
772 | flag_schedule_speculative means allow speculative motion of non-load insns. |
773 | flag_schedule_speculative_load means allow speculative motion of some | |
774 | load insns. | |
775 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 776 | load insns. */ |
8c660648 JL |
777 | |
778 | int flag_schedule_interblock = 1; | |
779 | int flag_schedule_speculative = 1; | |
780 | int flag_schedule_speculative_load = 0; | |
781 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 | 782 | |
46d3a873 CC |
783 | int flag_single_precision_constant; |
784 | ||
5527bf14 | 785 | /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple |
854a97f0 | 786 | by a cheaper branch on a count register. */ |
5527bf14 | 787 | int flag_branch_on_count_reg = 1; |
8c660648 | 788 | |
4291d9c8 | 789 | /* -finhibit-size-directive inhibits output of .size for ELF. |
854a97f0 | 790 | This is used only for compiling crtstuff.c, |
4291d9c8 RS |
791 | and it may be extended to other effects |
792 | needed for crtstuff.c on other systems. */ | |
793 | int flag_inhibit_size_directive = 0; | |
794 | ||
9a631e8e RS |
795 | /* -fverbose-asm causes extra commentary information to be produced in |
796 | the generated assembly code (to make it more readable). This option | |
797 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 798 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 799 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
800 | to be omitted and is useful when comparing two assembler files. */ |
801 | ||
c85f7c16 | 802 | int flag_verbose_asm = 0; |
9a631e8e | 803 | |
3d5cdd42 DE |
804 | /* -dA causes debug commentary information to be produced in |
805 | the generated assembly code (to make it more readable). This option | |
806 | is generally only of use to those who actually need to read the | |
807 | generated assembly code (perhaps while debugging the compiler itself). | |
808 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
809 | to be a catchall for printing debug information in the assembler file. */ | |
810 | ||
811 | int flag_debug_asm = 0; | |
9a631e8e | 812 | |
c349e40b SC |
813 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
814 | ||
815 | int flag_dump_rtl_in_asm = 0; | |
816 | ||
4291d9c8 | 817 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
818 | (Or, more generally, a linker that handles initializations.) |
819 | -fno-gnu-linker says that collect2 will be used. */ | |
820 | #ifdef USE_COLLECT2 | |
821 | int flag_gnu_linker = 0; | |
822 | #else | |
4291d9c8 | 823 | int flag_gnu_linker = 1; |
d68c507d | 824 | #endif |
4291d9c8 | 825 | |
27b41650 KG |
826 | /* Nonzero means put zero initialized data in the bss section. */ |
827 | int flag_zero_initialized_in_bss = 1; | |
828 | ||
d9d4fb43 AS |
829 | /* Enable SSA. */ |
830 | int flag_ssa = 0; | |
831 | ||
0b47e4c1 JL |
832 | /* Enable ssa conditional constant propagation. */ |
833 | int flag_ssa_ccp = 0; | |
834 | ||
835 | /* Enable ssa aggressive dead code elimination. */ | |
62d285ff | 836 | int flag_ssa_dce = 0; |
b53978a3 | 837 | |
854a97f0 | 838 | /* Tag all structures with __attribute__(packed). */ |
566cdc73 MM |
839 | int flag_pack_struct = 0; |
840 | ||
bd83d0ac RK |
841 | /* Emit code to check for stack overflow; also may cause large objects |
842 | to be allocated dynamically. */ | |
843 | int flag_stack_check; | |
844 | ||
a157febd GK |
845 | /* When non-NULL, indicates that whenever space is allocated on the |
846 | stack, the resulting stack pointer must not pass this | |
847 | address---that is, for stacks that grow downward, the stack pointer | |
848 | must always be greater than or equal to this address; for stacks | |
849 | that grow upward, the stack pointer must be less than this address. | |
850 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
851 | the support provided depends on the backend. */ | |
852 | rtx stack_limit_rtx; | |
853 | ||
9ae8ffe7 JL |
854 | /* 0 if pointer arguments may alias each other. True in C. |
855 | 1 if pointer arguments may not alias each other but may alias | |
856 | global variables. | |
857 | 2 if pointer arguments may not alias each other and may not | |
858 | alias global variables. True in Fortran. | |
859 | This defaults to 0 for C. */ | |
860 | int flag_argument_noalias = 0; | |
861 | ||
41472af8 MM |
862 | /* Nonzero if we should do (language-dependent) alias analysis. |
863 | Typically, this analysis will assume that expressions of certain | |
864 | types do not alias expressions of certain other types. Only used | |
865 | if alias analysis (in general) is enabled. */ | |
866 | int flag_strict_aliasing = 0; | |
867 | ||
07417085 KR |
868 | /* Instrument functions with calls at entry and exit, for profiling. */ |
869 | int flag_instrument_function_entry_exit = 0; | |
870 | ||
be163a70 ZW |
871 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
872 | On SVR4 targets, it also controls whether or not to emit a | |
873 | string identifying the compiler. */ | |
874 | ||
875 | int flag_no_ident = 0; | |
b8468bc7 | 876 | |
854a97f0 | 877 | /* This will perform a peephole pass before sched2. */ |
ede7cd44 RH |
878 | int flag_peephole2 = 0; |
879 | ||
3ff51205 AH |
880 | /* This will try to guess branch probabilities. */ |
881 | int flag_guess_branch_prob = 0; | |
882 | ||
a8aa7975 | 883 | /* -fcheck-bounds causes gcc to generate array bounds checks. |
e03b7153 | 884 | For C, C++, ObjC: defaults to off. |
a8aa7975 | 885 | For Java: defaults to on. |
e03b7153 | 886 | For Fortran: defaults to off. */ |
a8aa7975 GM |
887 | int flag_bounds_check = 0; |
888 | ||
201556f0 JJ |
889 | /* This will attempt to merge constant section constants, if 1 only |
890 | string constants and constants from constant pool, if 2 also constant | |
891 | variables. */ | |
892 | int flag_merge_constants = 1; | |
893 | ||
673b5311 MM |
894 | /* If one, renumber instruction UIDs to reduce the number of |
895 | unused UIDs if there are a lot of instructions. If greater than | |
896 | one, unconditionally renumber instruction UIDs. */ | |
897 | int flag_renumber_insns = 1; | |
898 | ||
ed8d2920 MM |
899 | /* If nonzero, use the graph coloring register allocator. */ |
900 | int flag_new_regalloc = 0; | |
901 | ||
5c856b23 JH |
902 | /* Nonzero if we perform superblock formation. */ |
903 | ||
904 | int flag_tracer = 0; | |
905 | ||
e72fcfe8 JH |
906 | /* Nonzero if we perform whole unit at a time compilation. */ |
907 | ||
908 | int flag_unit_at_a_time = 0; | |
909 | ||
854a97f0 KH |
910 | /* Values of the -falign-* flags: how much to align labels in code. |
911 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
912 | For each variable, there is an _log variant which is the power |
913 | of two not less than the variable, for .align output. */ | |
914 | ||
915 | int align_loops; | |
916 | int align_loops_log; | |
2cca7283 | 917 | int align_loops_max_skip; |
efa3896a GK |
918 | int align_jumps; |
919 | int align_jumps_log; | |
2cca7283 | 920 | int align_jumps_max_skip; |
efa3896a GK |
921 | int align_labels; |
922 | int align_labels_log; | |
2cca7283 | 923 | int align_labels_max_skip; |
efa3896a GK |
924 | int align_functions; |
925 | int align_functions_log; | |
926 | ||
f963b5d9 RS |
927 | /* Like align_functions_log above, but used by front-ends to force the |
928 | minimum function alignment. Zero means no alignment is forced. */ | |
929 | int force_align_functions_log; | |
930 | ||
b8468bc7 | 931 | /* Table of supported debugging formats. */ |
8b60264b | 932 | static const struct |
b8468bc7 | 933 | { |
8b60264b | 934 | const char *const arg; |
b8468bc7 NC |
935 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
936 | constant expression, we use NO_DEBUG in its place. */ | |
8b60264b KG |
937 | const enum debug_info_type debug_type; |
938 | const int use_extensions_p; | |
939 | const char *const description; | |
b8468bc7 NC |
940 | } *da, |
941 | debug_args[] = | |
942 | { | |
39dd8003 | 943 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
a6371940 ZW |
944 | N_("Generate debugging info in default format") }, |
945 | { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") }, | |
b8468bc7 | 946 | #ifdef DBX_DEBUGGING_INFO |
a6371940 ZW |
947 | { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") }, |
948 | { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") }, | |
b8468bc7 NC |
949 | #endif |
950 | #ifdef DWARF_DEBUGGING_INFO | |
a6371940 | 951 | { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") }, |
39dd8003 | 952 | { "dwarf+", DWARF_DEBUG, 1, |
a6371940 | 953 | N_("Generate extended DWARF-1 format debug info") }, |
b8468bc7 NC |
954 | #endif |
955 | #ifdef DWARF2_DEBUGGING_INFO | |
a6371940 | 956 | { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") }, |
b8468bc7 NC |
957 | #endif |
958 | #ifdef XCOFF_DEBUGGING_INFO | |
a6371940 ZW |
959 | { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") }, |
960 | { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") }, | |
b8468bc7 NC |
961 | #endif |
962 | #ifdef SDB_DEBUGGING_INFO | |
a6371940 | 963 | { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") }, |
1682dbb1 DR |
964 | #endif |
965 | #ifdef VMS_DEBUGGING_INFO | |
966 | { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") }, | |
b8468bc7 | 967 | #endif |
c84e2712 | 968 | { 0, 0, 0, 0 } |
b8468bc7 NC |
969 | }; |
970 | ||
971 | typedef struct | |
972 | { | |
c083a819 KG |
973 | const char *const string; |
974 | int *const variable; | |
975 | const int on_value; | |
976 | const char *const description; | |
b8468bc7 NC |
977 | } |
978 | lang_independent_options; | |
979 | ||
91ce572a CC |
980 | int flag_trapv = 0; |
981 | ||
19283265 RH |
982 | /* Add or remove a leading underscore from user symbols. */ |
983 | int flag_leading_underscore = -1; | |
984 | ||
985 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 986 | const char *user_label_prefix; |
19283265 | 987 | |
c6d9a88c MM |
988 | static const param_info lang_independent_params[] = { |
989 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \ | |
1c4c47db | 990 | { OPTION, DEFAULT, HELP }, |
c6d9a88c MM |
991 | #include "params.def" |
992 | #undef DEFPARAM | |
1c4c47db | 993 | { NULL, 0, NULL } |
c6d9a88c MM |
994 | }; |
995 | ||
4291d9c8 RS |
996 | /* Table of language-independent -f options. |
997 | STRING is the option name. VARIABLE is the address of the variable. | |
998 | ON_VALUE is the value to store in VARIABLE | |
999 | if `-fSTRING' is seen as an option. | |
1000 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
1001 | ||
c083a819 | 1002 | static const lang_independent_options f_options[] = |
4291d9c8 | 1003 | { |
21c7361e | 1004 | {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1, |
a6371940 | 1005 | N_("Perform DWARF2 duplicate elimination") }, |
73c68f61 SS |
1006 | {"eliminate-unused-debug-types", &flag_eliminate_unused_debug_types, 1, |
1007 | N_("Perform unused type elimination in debug info") }, | |
b8468bc7 | 1008 | {"float-store", &flag_float_store, 1, |
a6371940 | 1009 | N_("Do not store floats in registers") }, |
b8468bc7 | 1010 | {"defer-pop", &flag_defer_pop, 1, |
a6371940 | 1011 | N_("Defer popping functions args from stack until later") }, |
b8468bc7 | 1012 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, |
a6371940 | 1013 | N_("When possible do not generate stack frames") }, |
db8cb48e | 1014 | {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1, |
a6371940 | 1015 | N_("Optimize sibling and tail recursive calls") }, |
5c856b23 JH |
1016 | {"tracer", &flag_tracer, 1, |
1017 | N_("Perform superblock formation via tail duplication") }, | |
e72fcfe8 JH |
1018 | {"unit-at-a-time", &flag_unit_at_a_time, 1, |
1019 | N_("Compile whole compilation unit at a time") }, | |
b8468bc7 | 1020 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, |
a6371940 | 1021 | N_("When running CSE, follow jumps to their targets") }, |
b8468bc7 | 1022 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, |
a6371940 | 1023 | N_("When running CSE, follow conditional jumps") }, |
b8468bc7 | 1024 | {"expensive-optimizations", &flag_expensive_optimizations, 1, |
1737c953 | 1025 | N_("Perform a number of minor, expensive optimizations") }, |
b8468bc7 | 1026 | {"thread-jumps", &flag_thread_jumps, 1, |
1737c953 | 1027 | N_("Perform jump threading optimizations") }, |
b8468bc7 | 1028 | {"strength-reduce", &flag_strength_reduce, 1, |
1737c953 | 1029 | N_("Perform strength reduction optimizations") }, |
b8468bc7 | 1030 | {"unroll-loops", &flag_unroll_loops, 1, |
a6371940 | 1031 | N_("Perform loop unrolling when iteration count is known") }, |
b8468bc7 | 1032 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
a6371940 | 1033 | N_("Perform loop unrolling for all loops") }, |
b17d5d7c ZD |
1034 | {"old-unroll-loops", &flag_old_unroll_loops, 1, |
1035 | N_("Perform loop unrolling when iteration count is known") }, | |
1036 | {"old-unroll-all-loops", &flag_old_unroll_all_loops, 1, | |
1037 | N_("Perform loop unrolling for all loops") }, | |
1038 | {"peel-loops", &flag_peel_loops, 1, | |
1039 | N_("Perform loop peeling") }, | |
617b465c ZD |
1040 | {"unswitch-loops", &flag_unswitch_loops, 1, |
1041 | N_("Perform loop unswitching") }, | |
0dd0e980 JH |
1042 | {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1, |
1043 | N_("Generate prefetch instructions, if available, for arrays in loops") }, | |
b8468bc7 | 1044 | {"move-all-movables", &flag_move_all_movables, 1, |
a6371940 | 1045 | N_("Force all loop invariant computations out of loops") }, |
b8468bc7 | 1046 | {"reduce-all-givs", &flag_reduce_all_givs, 1, |
a6371940 | 1047 | N_("Strength reduce all loop general induction variables") }, |
b8468bc7 | 1048 | {"writable-strings", &flag_writable_strings, 1, |
a6371940 | 1049 | N_("Store strings in writable data section") }, |
b8468bc7 | 1050 | {"peephole", &flag_no_peephole, 0, |
1737c953 | 1051 | N_("Enable machine specific peephole optimizations") }, |
b8468bc7 | 1052 | {"force-mem", &flag_force_mem, 1, |
a6371940 | 1053 | N_("Copy memory operands into registers before using") }, |
b8468bc7 | 1054 | {"force-addr", &flag_force_addr, 1, |
a6371940 | 1055 | N_("Copy memory address constants into regs before using") }, |
b8468bc7 | 1056 | {"function-cse", &flag_no_function_cse, 0, |
a6371940 | 1057 | N_("Allow function addresses to be held in registers") }, |
b8468bc7 | 1058 | {"inline-functions", &flag_inline_functions, 1, |
a6371940 | 1059 | N_("Integrate simple functions into their callers") }, |
b8468bc7 | 1060 | {"keep-inline-functions", &flag_keep_inline_functions, 1, |
a6371940 | 1061 | N_("Generate code for funcs even if they are fully inlined") }, |
b8468bc7 | 1062 | {"inline", &flag_no_inline, 0, |
a6371940 | 1063 | N_("Pay attention to the 'inline' keyword") }, |
b8468bc7 | 1064 | {"keep-static-consts", &flag_keep_static_consts, 1, |
a6371940 | 1065 | N_("Emit static const variables even if they are not used") }, |
b8468bc7 | 1066 | {"syntax-only", &flag_syntax_only, 1, |
a6371940 | 1067 | N_("Check for syntax errors, then stop") }, |
b8468bc7 | 1068 | {"shared-data", &flag_shared_data, 1, |
a6371940 | 1069 | N_("Mark data as shared rather than private") }, |
b8468bc7 | 1070 | {"caller-saves", &flag_caller_saves, 1, |
a6371940 | 1071 | N_("Enable saving registers around function calls") }, |
b8468bc7 | 1072 | {"pcc-struct-return", &flag_pcc_struct_return, 1, |
a6371940 | 1073 | N_("Return 'short' aggregates in memory, not registers") }, |
b8468bc7 | 1074 | {"reg-struct-return", &flag_pcc_struct_return, 0, |
a6371940 | 1075 | N_("Return 'short' aggregates in registers") }, |
b8468bc7 | 1076 | {"delayed-branch", &flag_delayed_branch, 1, |
a6371940 | 1077 | N_("Attempt to fill delay slots of branch instructions") }, |
b8468bc7 | 1078 | {"gcse", &flag_gcse, 1, |
a6371940 | 1079 | N_("Perform the global common subexpression elimination") }, |
a13d4ebf | 1080 | {"gcse-lm", &flag_gcse_lm, 1, |
a6371940 | 1081 | N_("Perform enhanced load motion during global subexpression elimination") }, |
a13d4ebf | 1082 | {"gcse-sm", &flag_gcse_sm, 1, |
a6371940 | 1083 | N_("Perform store motion after global subexpression elimination") }, |
96327cdc JH |
1084 | {"loop-optimize", &flag_loop_optimize, 1, |
1085 | N_("Perform the loop optimizations") }, | |
1086 | {"crossjumping", &flag_crossjumping, 1, | |
1087 | N_("Perform cross-jumping optimization") }, | |
2c4b77f3 JH |
1088 | {"if-conversion", &flag_if_conversion, 1, |
1089 | N_("Perform conversion of conditional jumps to branchless equivalents") }, | |
1090 | {"if-conversion2", &flag_if_conversion2, 1, | |
1091 | N_("Perform conversion of conditional jumps to conditional execution") }, | |
b8468bc7 | 1092 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, |
1737c953 | 1093 | N_("Run CSE pass after loop optimizations") }, |
b8468bc7 | 1094 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, |
1737c953 | 1095 | N_("Run the loop optimizer twice") }, |
b6d24183 | 1096 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1, |
a6371940 | 1097 | N_("Delete useless null pointer checks") }, |
b8468bc7 | 1098 | {"schedule-insns", &flag_schedule_insns, 1, |
a6371940 | 1099 | N_("Reschedule instructions before register allocation") }, |
b8468bc7 | 1100 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, |
a6371940 | 1101 | N_("Reschedule instructions after register allocation") }, |
b8468bc7 | 1102 | {"sched-interblock",&flag_schedule_interblock, 1, |
a6371940 | 1103 | N_("Enable scheduling across basic blocks") }, |
b8468bc7 | 1104 | {"sched-spec",&flag_schedule_speculative, 1, |
a6371940 | 1105 | N_("Allow speculative motion of non-loads") }, |
b8468bc7 | 1106 | {"sched-spec-load",&flag_schedule_speculative_load, 1, |
a6371940 | 1107 | N_("Allow speculative motion of some loads") }, |
b8468bc7 | 1108 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, |
a6371940 | 1109 | N_("Allow speculative motion of more loads") }, |
b9422b69 JH |
1110 | {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1, |
1111 | N_("If scheduling post reload, do superblock sheduling") }, | |
1112 | {"sched2-use-traces", &flag_sched2_use_traces, 1, | |
1113 | N_("If scheduling post reload, do trace sheduling") }, | |
b8468bc7 | 1114 | {"branch-count-reg",&flag_branch_on_count_reg, 1, |
a6371940 | 1115 | N_("Replace add,compare,branch with branch on count reg") }, |
b8468bc7 | 1116 | {"pic", &flag_pic, 1, |
a6371940 | 1117 | N_("Generate position independent code, if possible") }, |
b8468bc7 NC |
1118 | {"PIC", &flag_pic, 2, ""}, |
1119 | {"exceptions", &flag_exceptions, 1, | |
a6371940 | 1120 | N_("Enable exception handling") }, |
14a774a9 | 1121 | {"unwind-tables", &flag_unwind_tables, 1, |
a6371940 | 1122 | N_("Just generate unwind tables for exception handling") }, |
b932f770 JH |
1123 | {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1, |
1124 | N_("Generate unwind tables exact at each instruction boundary") }, | |
c1e9f663 | 1125 | {"non-call-exceptions", &flag_non_call_exceptions, 1, |
a6371940 | 1126 | N_("Support synchronous non-call exceptions") }, |
b8468bc7 | 1127 | {"profile-arcs", &profile_arc_flag, 1, |
a6371940 | 1128 | N_("Insert arc based program profiling code") }, |
b8468bc7 | 1129 | {"test-coverage", &flag_test_coverage, 1, |
a6371940 | 1130 | N_("Create data files needed by gcov") }, |
b8468bc7 | 1131 | {"branch-probabilities", &flag_branch_probabilities, 1, |
a6371940 | 1132 | N_("Use profiling information for branch probabilities") }, |
1034407f NC |
1133 | {"profile", &profile_flag, 1, |
1134 | N_("Enable basic program profiling code") }, | |
11bdd2ae | 1135 | {"reorder-blocks", &flag_reorder_blocks, 1, |
a6371940 | 1136 | N_("Reorder basic blocks to improve code placement") }, |
194734e9 JH |
1137 | {"reorder-functions", &flag_reorder_functions, 1, |
1138 | N_("Reorder functions to improve code placement") }, | |
7b82b5da | 1139 | {"rename-registers", &flag_rename_registers, 1, |
a6371940 | 1140 | N_("Do the register renaming optimization pass") }, |
8582c27b RH |
1141 | {"cprop-registers", &flag_cprop_registers, 1, |
1142 | N_("Do the register copy-propagation optimization pass") }, | |
b8468bc7 | 1143 | {"common", &flag_no_common, 0, |
ff7cc307 | 1144 | N_("Do not put uninitialized globals in the common section") }, |
b8468bc7 | 1145 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, |
a6371940 | 1146 | N_("Do not generate .size directives") }, |
b8468bc7 | 1147 | {"function-sections", &flag_function_sections, 1, |
a6371940 | 1148 | N_("place each function into its own section") }, |
257441db | 1149 | {"data-sections", &flag_data_sections, 1, |
a6371940 | 1150 | N_("place data items into their own section") }, |
b8468bc7 | 1151 | {"verbose-asm", &flag_verbose_asm, 1, |
a6371940 | 1152 | N_("Add extra commentry to assembler output") }, |
b8468bc7 | 1153 | {"gnu-linker", &flag_gnu_linker, 1, |
1737c953 | 1154 | N_("Output GNU ld formatted global initializers") }, |
b8468bc7 | 1155 | {"regmove", &flag_regmove, 1, |
1737c953 | 1156 | N_("Enables a register move optimization") }, |
c84e2712 | 1157 | {"optimize-register-move", &flag_regmove, 1, |
a6371940 | 1158 | N_("Do the full regmove optimization pass") }, |
b8468bc7 | 1159 | {"pack-struct", &flag_pack_struct, 1, |
a6371940 | 1160 | N_("Pack structure members together without holes") }, |
b8468bc7 | 1161 | {"stack-check", &flag_stack_check, 1, |
a6371940 | 1162 | N_("Insert stack checking code into the program") }, |
b8468bc7 | 1163 | {"argument-alias", &flag_argument_noalias, 0, |
a6371940 | 1164 | N_("Specify that arguments may alias each other & globals") }, |
b8468bc7 | 1165 | {"argument-noalias", &flag_argument_noalias, 1, |
a6371940 | 1166 | N_("Assume arguments may alias globals but not each other") }, |
b8468bc7 | 1167 | {"argument-noalias-global", &flag_argument_noalias, 2, |
a6371940 | 1168 | N_("Assume arguments do not alias each other or globals") }, |
b8468bc7 | 1169 | {"strict-aliasing", &flag_strict_aliasing, 1, |
a6371940 | 1170 | N_("Assume strict aliasing rules apply") }, |
854a97f0 | 1171 | {"align-loops", &align_loops, 0, |
a6371940 | 1172 | N_("Align the start of loops") }, |
854a97f0 | 1173 | {"align-jumps", &align_jumps, 0, |
a6371940 | 1174 | N_("Align labels which are only reached by jumping") }, |
efa3896a | 1175 | {"align-labels", &align_labels, 0, |
a6371940 | 1176 | N_("Align all labels") }, |
efa3896a | 1177 | {"align-functions", &align_functions, 0, |
a6371940 | 1178 | N_("Align the start of functions") }, |
201556f0 JJ |
1179 | {"merge-constants", &flag_merge_constants, 1, |
1180 | N_("Attempt to merge identical constants accross compilation units") }, | |
1181 | {"merge-all-constants", &flag_merge_constants, 2, | |
1182 | N_("Attempt to merge identical constants and constant variables") }, | |
c84e2712 | 1183 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
a6371940 | 1184 | N_("Suppress output of instruction numbers and line number notes in debugging dumps") }, |
07417085 | 1185 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
a6371940 | 1186 | N_("Instrument function entry/exit with profiling calls") }, |
27b41650 KG |
1187 | {"zero-initialized-in-bss", &flag_zero_initialized_in_bss, 1, |
1188 | N_("Put zero initialized data in the bss section") }, | |
d9d4fb43 | 1189 | {"ssa", &flag_ssa, 1, |
a6371940 | 1190 | N_("Enable SSA optimizations") }, |
0b47e4c1 | 1191 | {"ssa-ccp", &flag_ssa_ccp, 1, |
eaec9b3d | 1192 | N_("Enable SSA conditional constant propagation") }, |
62d285ff JL |
1193 | {"ssa-dce", &flag_ssa_dce, 1, |
1194 | N_("Enable aggressive SSA dead code elimination") }, | |
19283265 | 1195 | {"leading-underscore", &flag_leading_underscore, 1, |
a6371940 | 1196 | N_("External symbols have a leading underscore") }, |
be163a70 | 1197 | {"ident", &flag_no_ident, 0, |
a6371940 | 1198 | N_("Process #ident directives") }, |
ede7cd44 | 1199 | { "peephole2", &flag_peephole2, 1, |
a6371940 | 1200 | N_("Enables an rtl peephole pass run before sched2") }, |
2e8f2e8f TM |
1201 | {"finite-math-only", &flag_finite_math_only, 1, |
1202 | N_("Assume no NaNs or +-Infs are generated") }, | |
3ff51205 | 1203 | { "guess-branch-probability", &flag_guess_branch_prob, 1, |
a6371940 | 1204 | N_("Enables guessing of branch probabilities") }, |
9605da8a | 1205 | {"math-errno", &flag_errno_math, 1, |
a6371940 | 1206 | N_("Set errno after built-in math functions") }, |
de6c5979 | 1207 | {"trapping-math", &flag_trapping_math, 1, |
a6371940 | 1208 | N_("Floating-point operations can trap") }, |
de6c5979 | 1209 | {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1, |
a6371940 | 1210 | N_("Allow math optimizations that may violate IEEE or ANSI standards") }, |
52bfebf0 RS |
1211 | {"signaling-nans", &flag_signaling_nans, 1, |
1212 | N_("Disable optimizations observable by IEEE signaling NaNs") }, | |
a8aa7975 | 1213 | {"bounds-check", &flag_bounds_check, 1, |
e03b7153 | 1214 | N_("Generate code to check bounds before indexing arrays") }, |
46d3a873 | 1215 | {"single-precision-constant", &flag_single_precision_constant, 1, |
a6371940 | 1216 | N_("Convert floating point constant to single precision constant") }, |
94b23dd5 | 1217 | {"time-report", &time_report, 1, |
a6371940 | 1218 | N_("Report time taken by each compiler pass at end of run") }, |
94b23dd5 | 1219 | {"mem-report", &mem_report, 1, |
a6371940 | 1220 | N_("Report on permanent memory allocation at end of run") }, |
91ce572a | 1221 | { "trapv", &flag_trapv, 1, |
4d6baafa | 1222 | N_("Trap for signed overflow in addition / subtraction / multiplication") }, |
ed8d2920 MM |
1223 | { "new-ra", &flag_new_regalloc, 1, |
1224 | N_("Use graph coloring register allocation.") }, | |
4291d9c8 | 1225 | }; |
b99933c7 RS |
1226 | |
1227 | /* Table of language-specific options. */ | |
1228 | ||
8b60264b | 1229 | static const struct lang_opt |
b8468bc7 | 1230 | { |
8b60264b KG |
1231 | const char *const option; |
1232 | const char *const description; | |
b8468bc7 NC |
1233 | } |
1234 | documented_lang_options[] = | |
b99933c7 | 1235 | { |
b8468bc7 NC |
1236 | /* In order not to overload the --help output, the convention |
1237 | used here is to only describe those options which are not | |
1238 | enabled by default. */ | |
1239 | ||
9cabb1d8 | 1240 | { "-ansi", |
56508306 | 1241 | N_("Compile just for ISO C90") }, |
9cabb1d8 | 1242 | { "-std= ", |
a6371940 | 1243 | N_("Determine language standard") }, |
b8468bc7 NC |
1244 | |
1245 | { "-fsigned-bitfields", "" }, | |
a6371940 | 1246 | { "-funsigned-bitfields", |
b0287a90 | 1247 | N_("Make bit-fields by unsigned by default") }, |
b8468bc7 NC |
1248 | { "-fno-signed-bitfields", "" }, |
1249 | { "-fno-unsigned-bitfields","" }, | |
9cabb1d8 | 1250 | { "-fsigned-char", |
a6371940 | 1251 | N_("Make 'char' be signed by default") }, |
9cabb1d8 | 1252 | { "-funsigned-char", |
a6371940 | 1253 | N_("Make 'char' be unsigned by default") }, |
b8468bc7 NC |
1254 | { "-fno-signed-char", "" }, |
1255 | { "-fno-unsigned-char", "" }, | |
1256 | ||
b8468bc7 | 1257 | { "-fasm", "" }, |
9cabb1d8 | 1258 | { "-fno-asm", |
1737c953 | 1259 | N_("Do not recognize the 'asm' keyword") }, |
b8468bc7 | 1260 | { "-fbuiltin", "" }, |
9cabb1d8 | 1261 | { "-fno-builtin", |
1737c953 | 1262 | N_("Do not recognize any built in functions") }, |
9cabb1d8 | 1263 | { "-fhosted", |
a6371940 | 1264 | N_("Assume normal C execution environment") }, |
b8468bc7 NC |
1265 | { "-fno-hosted", "" }, |
1266 | { "-ffreestanding", | |
a6371940 | 1267 | N_("Assume that standard libraries & main might not exist") }, |
b8468bc7 | 1268 | { "-fno-freestanding", "" }, |
9cabb1d8 | 1269 | { "-fcond-mismatch", |
a6371940 | 1270 | N_("Allow different types as args of ? operator") }, |
b8468bc7 | 1271 | { "-fno-cond-mismatch", "" }, |
9cabb1d8 | 1272 | { "-fdollars-in-identifiers", |
a6371940 | 1273 | N_("Allow the use of $ inside identifiers") }, |
b8468bc7 | 1274 | { "-fno-dollars-in-identifiers", "" }, |
3773a46b JM |
1275 | { "-fpreprocessed", "" }, |
1276 | { "-fno-preprocessed", "" }, | |
9cabb1d8 | 1277 | { "-fshort-double", |
a6371940 | 1278 | N_("Use the same size for double as for float") }, |
b8468bc7 | 1279 | { "-fno-short-double", "" }, |
9cabb1d8 | 1280 | { "-fshort-enums", |
a6371940 | 1281 | N_("Use the smallest fitting integer to hold enums") }, |
b8468bc7 | 1282 | { "-fno-short-enums", "" }, |
9cabb1d8 | 1283 | { "-fshort-wchar", |
a6371940 | 1284 | N_("Override the underlying type for wchar_t to `unsigned short'") }, |
12a39b12 | 1285 | { "-fno-short-wchar", "" }, |
b8468bc7 | 1286 | |
9cabb1d8 | 1287 | { "-Wall", |
a6371940 | 1288 | N_("Enable most warning messages") }, |
b8468bc7 | 1289 | { "-Wbad-function-cast", |
a6371940 | 1290 | N_("Warn about casting functions to incompatible types") }, |
b8468bc7 | 1291 | { "-Wno-bad-function-cast", "" }, |
74ff4629 | 1292 | { "-Wmissing-format-attribute", |
a6371940 | 1293 | N_("Warn about functions which might be candidates for format attributes") }, |
74ff4629 | 1294 | { "-Wno-missing-format-attribute", "" }, |
9cabb1d8 | 1295 | { "-Wcast-qual", |
a6371940 | 1296 | N_("Warn about casts which discard qualifiers") }, |
b8468bc7 | 1297 | { "-Wno-cast-qual", "" }, |
9cabb1d8 | 1298 | { "-Wchar-subscripts", |
a6371940 | 1299 | N_("Warn about subscripts whose type is 'char'") }, |
b8468bc7 | 1300 | { "-Wno-char-subscripts", "" }, |
9cabb1d8 | 1301 | { "-Wcomment", |
a6371940 | 1302 | N_("Warn if nested comments are detected") }, |
c84e2712 | 1303 | { "-Wno-comment", "" }, |
9cabb1d8 | 1304 | { "-Wcomments", |
a6371940 | 1305 | N_("Warn if nested comments are detected") }, |
c84e2712 | 1306 | { "-Wno-comments", "" }, |
9cabb1d8 | 1307 | { "-Wconversion", |
a6371940 | 1308 | N_("Warn about possibly confusing type conversions") }, |
b8468bc7 | 1309 | { "-Wno-conversion", "" }, |
75227a33 | 1310 | { "-Wdiv-by-zero", "" }, |
9cabb1d8 | 1311 | { "-Wno-div-by-zero", |
75227a33 | 1312 | N_("Do not warn about compile-time integer division by zero") }, |
9cabb1d8 | 1313 | { "-Wfloat-equal", |
75227a33 GK |
1314 | N_("Warn about testing equality of floating point numbers") }, |
1315 | { "-Wno-float-equal", "" }, | |
9cabb1d8 | 1316 | { "-Wformat", |
a6371940 | 1317 | N_("Warn about printf/scanf/strftime/strfmon format anomalies") }, |
b8468bc7 | 1318 | { "-Wno-format", "" }, |
4d808927 JM |
1319 | { "-Wformat-extra-args", "" }, |
1320 | { "-Wno-format-extra-args", | |
a6371940 | 1321 | N_("Don't warn about too many arguments to format functions") }, |
9cabb1d8 | 1322 | { "-Wformat-nonliteral", |
a6371940 | 1323 | N_("Warn about non-string-literal format strings") }, |
4d808927 | 1324 | { "-Wno-format-nonliteral", "" }, |
c907e684 | 1325 | { "-Wformat-security", |
a6371940 | 1326 | N_("Warn about possible security problems with format functions") }, |
c907e684 | 1327 | { "-Wno-format-security", "" }, |
75227a33 GK |
1328 | { "-Wformat-y2k", "" }, |
1329 | { "-Wno-format-y2k", | |
1330 | N_("Don't warn about strftime formats yielding 2 digit years") }, | |
b8468bc7 | 1331 | { "-Wimplicit-function-declaration", |
a6371940 | 1332 | N_("Warn about implicit function declarations") }, |
b8468bc7 NC |
1333 | { "-Wno-implicit-function-declaration", "" }, |
1334 | { "-Werror-implicit-function-declaration", "" }, | |
9cabb1d8 | 1335 | { "-Wimplicit-int", |
a6371940 | 1336 | N_("Warn when a declaration does not specify a type") }, |
b8468bc7 NC |
1337 | { "-Wno-implicit-int", "" }, |
1338 | { "-Wimplicit", "" }, | |
1339 | { "-Wno-implicit", "" }, | |
9cabb1d8 | 1340 | { "-Wimport", |
a6371940 | 1341 | N_("Warn about the use of the #import directive") }, |
b8468bc7 | 1342 | { "-Wno-import", "" }, |
223b87b6 GK |
1343 | { "-Winvalid-pch", |
1344 | N_("Warn about PCH files that are found but not used") }, | |
b8468bc7 | 1345 | { "-Wlong-long","" }, |
9cabb1d8 | 1346 | { "-Wno-long-long", |
a6371940 | 1347 | N_("Do not warn about using 'long long' when -pedantic") }, |
9cabb1d8 | 1348 | { "-Wmain", |
a6371940 | 1349 | N_("Warn about suspicious declarations of main") }, |
b8468bc7 NC |
1350 | { "-Wno-main", "" }, |
1351 | { "-Wmissing-braces", | |
1737c953 | 1352 | N_("Warn about possibly missing braces around initializers") }, |
b8468bc7 NC |
1353 | { "-Wno-missing-braces", "" }, |
1354 | { "-Wmissing-declarations", | |
a6371940 | 1355 | N_("Warn about global funcs without previous declarations") }, |
b8468bc7 | 1356 | { "-Wno-missing-declarations", "" }, |
9cabb1d8 | 1357 | { "-Wmissing-prototypes", |
a6371940 | 1358 | N_("Warn about global funcs without prototypes") }, |
b8468bc7 | 1359 | { "-Wno-missing-prototypes", "" }, |
9cabb1d8 | 1360 | { "-Wmultichar", |
a6371940 | 1361 | N_("Warn about use of multicharacter literals") }, |
b8468bc7 | 1362 | { "-Wno-multichar", "" }, |
9cabb1d8 | 1363 | { "-Wnested-externs", |
a6371940 | 1364 | N_("Warn about externs not at file scope level") }, |
b8468bc7 | 1365 | { "-Wno-nested-externs", "" }, |
9cabb1d8 | 1366 | { "-Wparentheses", |
a6371940 | 1367 | N_("Warn about possible missing parentheses") }, |
b8468bc7 | 1368 | { "-Wno-parentheses", "" }, |
9cabb1d8 | 1369 | { "-Wpointer-arith", |
a6371940 | 1370 | N_("Warn about function pointer arithmetic") }, |
b8468bc7 NC |
1371 | { "-Wno-pointer-arith", "" }, |
1372 | { "-Wredundant-decls", | |
a6371940 | 1373 | N_("Warn about multiple declarations of the same object") }, |
b8468bc7 | 1374 | { "-Wno-redundant-decls", "" }, |
75227a33 GK |
1375 | { "-Wreturn-type", |
1376 | N_("Warn whenever a function's return-type defaults to int") }, | |
1377 | { "-Wno-return-type", "" }, | |
1378 | { "-Wsequence-point", | |
1379 | N_("Warn about possible violations of sequence point rules") }, | |
1380 | { "-Wno-sequence-point", "" }, | |
9cabb1d8 | 1381 | { "-Wsign-compare", |
a6371940 | 1382 | N_("Warn about signed/unsigned comparisons") }, |
b8468bc7 | 1383 | { "-Wno-sign-compare", "" }, |
9cabb1d8 | 1384 | { "-Wstrict-prototypes", |
a6371940 | 1385 | N_("Warn about non-prototyped function decls") }, |
b8468bc7 | 1386 | { "-Wno-strict-prototypes", "" }, |
9cabb1d8 | 1387 | { "-Wtraditional", |
f458d1d5 | 1388 | N_("Warn about constructs whose meanings change in ISO C") }, |
b8468bc7 | 1389 | { "-Wno-traditional", "" }, |
9cabb1d8 | 1390 | { "-Wtrigraphs", |
a6371940 | 1391 | N_("Warn when trigraphs are encountered") }, |
b8468bc7 NC |
1392 | { "-Wno-trigraphs", "" }, |
1393 | { "-Wundef", "" }, | |
1394 | { "-Wno-undef", "" }, | |
9cabb1d8 | 1395 | { "-Wunknown-pragmas", |
75227a33 GK |
1396 | N_("Warn about unrecognized pragmas") }, |
1397 | { "-Wno-unknown-pragmas", "" }, | |
9cabb1d8 | 1398 | { "-Wwrite-strings", |
a6371940 | 1399 | N_("Mark strings as 'const char *'") }, |
b8468bc7 | 1400 | { "-Wno-write-strings", "" }, |
854a97f0 | 1401 | |
b8468bc7 | 1402 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, |
854a97f0 | 1403 | |
2a95de17 | 1404 | #include "options.h" |
854a97f0 | 1405 | |
b99933c7 | 1406 | }; |
b8468bc7 NC |
1407 | |
1408 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1409 | and which bits in `target_switches' it should set or clear. | |
1410 | If VALUE is positive, it is bits to set. | |
1411 | If VALUE is negative, -VALUE is bits to clear. | |
1412 | (The sign bit is not used so there is no confusion.) */ | |
1413 | ||
8b60264b | 1414 | static const struct |
b8468bc7 | 1415 | { |
8b60264b KG |
1416 | const char *const name; |
1417 | const int value; | |
1418 | const char *const description; | |
b8468bc7 | 1419 | } |
9cabb1d8 | 1420 | target_switches[] = TARGET_SWITCHES; |
b8468bc7 NC |
1421 | |
1422 | /* This table is similar, but allows the switch to have a value. */ | |
1423 | ||
1424 | #ifdef TARGET_OPTIONS | |
8b60264b | 1425 | static const struct |
b8468bc7 | 1426 | { |
8b60264b KG |
1427 | const char *const prefix; |
1428 | const char **const variable; | |
1429 | const char *const description; | |
b8468bc7 | 1430 | } |
9cabb1d8 | 1431 | target_options[] = TARGET_OPTIONS; |
b8468bc7 | 1432 | #endif |
4291d9c8 | 1433 | \f |
854a97f0 | 1434 | /* Options controlling warnings. */ |
4291d9c8 RS |
1435 | |
1436 | /* Don't print warning messages. -w. */ | |
1437 | ||
1438 | int inhibit_warnings = 0; | |
1439 | ||
317639a8 BC |
1440 | /* Don't suppress warnings from system headers. -Wsystem-headers. */ |
1441 | ||
1442 | int warn_system_headers = 0; | |
1443 | ||
65ca2d60 | 1444 | /* Print various extra warnings. -W/-Wextra. */ |
4291d9c8 RS |
1445 | |
1446 | int extra_warnings = 0; | |
1447 | ||
1448 | /* Treat warnings as errors. -Werror. */ | |
1449 | ||
1450 | int warnings_are_errors = 0; | |
1451 | ||
078721e1 | 1452 | /* Nonzero to warn about unused variables, functions et.al. */ |
4291d9c8 | 1453 | |
078721e1 AC |
1454 | int warn_unused_function; |
1455 | int warn_unused_label; | |
1456 | int warn_unused_parameter; | |
1457 | int warn_unused_variable; | |
1458 | int warn_unused_value; | |
1459 | ||
312f6255 GK |
1460 | /* Nonzero to warn about code which is never reached. */ |
1461 | ||
1462 | int warn_notreached; | |
1463 | ||
4291d9c8 RS |
1464 | /* Nonzero to warn about variables used before they are initialized. */ |
1465 | ||
1466 | int warn_uninitialized; | |
1467 | ||
6d2f8887 | 1468 | /* Nonzero means warn about all declarations which shadow others. */ |
4291d9c8 RS |
1469 | |
1470 | int warn_shadow; | |
1471 | ||
d6961341 AC |
1472 | /* Warn if a switch on an enum, that does not have a default case, |
1473 | fails to have a case for every enum value. */ | |
4291d9c8 RS |
1474 | |
1475 | int warn_switch; | |
1476 | ||
d6961341 AC |
1477 | /* Warn if a switch does not have a default case. */ |
1478 | ||
1479 | int warn_switch_default; | |
1480 | ||
173028e5 AC |
1481 | /* Warn if a switch on an enum fails to have a case for every enum |
1482 | value (regardless of the presence or otherwise of a default case). */ | |
1483 | ||
1484 | int warn_switch_enum; | |
1485 | ||
4291d9c8 RS |
1486 | /* Nonzero means warn about function definitions that default the return type |
1487 | or that use a null return and have a return-type other than void. */ | |
1488 | ||
1489 | int warn_return_type; | |
1490 | ||
1491 | /* Nonzero means warn about pointer casts that increase the required | |
1492 | alignment of the target type (and might therefore lead to a crash | |
1493 | due to a misaligned access). */ | |
1494 | ||
1495 | int warn_cast_align; | |
1496 | ||
b51e9c62 RK |
1497 | /* Nonzero means warn about any objects definitions whose size is larger |
1498 | than N bytes. Also want about function definitions whose returned | |
1499 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
854a97f0 | 1500 | |
b51e9c62 | 1501 | int warn_larger_than; |
4559fd9e | 1502 | HOST_WIDE_INT larger_than_size; |
4291d9c8 RS |
1503 | |
1504 | /* Nonzero means warn if inline function is too large. */ | |
1505 | ||
1506 | int warn_inline; | |
1507 | ||
1508 | /* Warn if a function returns an aggregate, | |
1509 | since there are often incompatible calling conventions for doing this. */ | |
1510 | ||
1511 | int warn_aggregate_return; | |
1512 | ||
3c12fcc2 GM |
1513 | /* Warn if packed attribute on struct is unnecessary and inefficient. */ |
1514 | ||
1515 | int warn_packed; | |
1516 | ||
1517 | /* Warn when gcc pads a structure to an alignment boundary. */ | |
1518 | ||
1519 | int warn_padded; | |
1520 | ||
18424ae1 BL |
1521 | /* Warn when an optimization pass is disabled. */ |
1522 | ||
1523 | int warn_disabled_optimization; | |
1524 | ||
b313a0fe RH |
1525 | /* Warn about functions which might be candidates for attribute noreturn. */ |
1526 | ||
1527 | int warn_missing_noreturn; | |
1528 | ||
9cabb1d8 | 1529 | /* Nonzero means warn about uses of __attribute__((deprecated)) |
e23bd218 IR |
1530 | declarations. */ |
1531 | ||
1532 | int warn_deprecated_decl = 1; | |
1533 | ||
bf52f899 NS |
1534 | /* Nonzero means warn about constructs which might not be |
1535 | strict-aliasing safe. */ | |
1536 | ||
1537 | int warn_strict_aliasing; | |
1538 | ||
65ca2d60 | 1539 | /* Like f_options, but for -W. */ |
4291d9c8 | 1540 | |
c083a819 | 1541 | static const lang_independent_options W_options[] = |
4291d9c8 | 1542 | { |
a6371940 ZW |
1543 | {"unused-function", &warn_unused_function, 1, |
1544 | N_("Warn when a function is unused") }, | |
1545 | {"unused-label", &warn_unused_label, 1, | |
1546 | N_("Warn when a label is unused") }, | |
1547 | {"unused-parameter", &warn_unused_parameter, 1, | |
1548 | N_("Warn when a function parameter is unused") }, | |
1549 | {"unused-variable", &warn_unused_variable, 1, | |
1550 | N_("Warn when a variable is unused") }, | |
1551 | {"unused-value", &warn_unused_value, 1, | |
1552 | N_("Warn when an expression value is unused") }, | |
1553 | {"system-headers", &warn_system_headers, 1, | |
1554 | N_("Do not suppress warnings from system headers") }, | |
1555 | {"error", &warnings_are_errors, 1, | |
1556 | N_("Treat all warnings as errors") }, | |
1557 | {"shadow", &warn_shadow, 1, | |
1558 | N_("Warn when one local variable shadows another") }, | |
b8468bc7 | 1559 | {"switch", &warn_switch, 1, |
d6961341 AC |
1560 | N_("Warn about enumerated switches, with no default, missing a case") }, |
1561 | {"switch-default", &warn_switch_default, 1, | |
1562 | N_("Warn about enumerated switches missing a default case") }, | |
173028e5 AC |
1563 | {"switch-enum", &warn_switch_enum, 1, |
1564 | N_("Warn about all enumerated switches missing a specific case") }, | |
b8468bc7 | 1565 | {"aggregate-return", &warn_aggregate_return, 1, |
a6371940 | 1566 | N_("Warn about returning structures, unions or arrays") }, |
b8468bc7 | 1567 | {"cast-align", &warn_cast_align, 1, |
a6371940 | 1568 | N_("Warn about pointer casts which increase alignment") }, |
854a97f0 | 1569 | {"unreachable-code", &warn_notreached, 1, |
a6371940 | 1570 | N_("Warn about code that will never be executed") }, |
b8468bc7 | 1571 | {"uninitialized", &warn_uninitialized, 1, |
ff7cc307 | 1572 | N_("Warn about uninitialized automatic variables") }, |
b8468bc7 | 1573 | {"inline", &warn_inline, 1, |
a6371940 | 1574 | N_("Warn when an inlined function cannot be inlined") }, |
3c12fcc2 | 1575 | {"packed", &warn_packed, 1, |
a6371940 | 1576 | N_("Warn when the packed attribute has no effect on struct layout") }, |
3c12fcc2 | 1577 | {"padded", &warn_padded, 1, |
a6371940 | 1578 | N_("Warn when padding is required to align struct members") }, |
18424ae1 | 1579 | {"disabled-optimization", &warn_disabled_optimization, 1, |
a6371940 | 1580 | N_("Warn when an optimization pass is disabled") }, |
e23bd218 IR |
1581 | {"deprecated-declarations", &warn_deprecated_decl, 1, |
1582 | N_("Warn about uses of __attribute__((deprecated)) declarations") }, | |
65ca2d60 PE |
1583 | {"extra", &extra_warnings, 1, |
1584 | N_("Print extra (possibly unwanted) warnings") }, | |
21c7361e | 1585 | {"missing-noreturn", &warn_missing_noreturn, 1, |
bf52f899 NS |
1586 | N_("Warn about functions which might be candidates for attribute noreturn") }, |
1587 | {"strict-aliasing", &warn_strict_aliasing, 1, | |
1588 | N_ ("Warn about code which might break the strict aliasing rules") } | |
4291d9c8 | 1589 | }; |
de6c5979 | 1590 | |
f5e99456 NB |
1591 | void |
1592 | set_Wunused (setting) | |
1593 | int setting; | |
1594 | { | |
1595 | warn_unused_function = setting; | |
1596 | warn_unused_label = setting; | |
1597 | /* Unused function parameter warnings are reported when either ``-W | |
1598 | -Wunused'' or ``-Wunused-parameter'' is specified. Differentiate | |
1599 | -Wunused by setting WARN_UNUSED_PARAMETER to -1. */ | |
1600 | if (!setting) | |
1601 | warn_unused_parameter = 0; | |
1602 | else if (!warn_unused_parameter) | |
1603 | warn_unused_parameter = -1; | |
1604 | warn_unused_variable = setting; | |
1605 | warn_unused_value = setting; | |
1606 | } | |
1607 | ||
de6c5979 BL |
1608 | /* The following routines are useful in setting all the flags that |
1609 | -ffast-math and -fno-fast-math imply. */ | |
1610 | ||
1611 | void | |
ef171ead AJ |
1612 | set_fast_math_flags (set) |
1613 | int set; | |
de6c5979 | 1614 | { |
748d29c1 NB |
1615 | flag_trapping_math = !set; |
1616 | flag_unsafe_math_optimizations = set; | |
2e8f2e8f | 1617 | flag_finite_math_only = set; |
748d29c1 | 1618 | flag_errno_math = !set; |
52bfebf0 RS |
1619 | if (set) |
1620 | flag_signaling_nans = 0; | |
de6c5979 BL |
1621 | } |
1622 | ||
748d29c1 NB |
1623 | /* Return true iff flags are set as if -ffast-math. */ |
1624 | bool | |
1625 | fast_math_flags_set_p () | |
de6c5979 | 1626 | { |
748d29c1 NB |
1627 | return (!flag_trapping_math |
1628 | && flag_unsafe_math_optimizations | |
2e8f2e8f | 1629 | && flag_finite_math_only |
748d29c1 | 1630 | && !flag_errno_math); |
de6c5979 BL |
1631 | } |
1632 | ||
4291d9c8 RS |
1633 | \f |
1634 | /* Output files for assembler code (real compiler output) | |
1635 | and debugging dumps. */ | |
1636 | ||
1637 | FILE *asm_out_file; | |
1638 | FILE *aux_info_file; | |
032713aa | 1639 | FILE *rtl_dump_file = NULL; |
4291d9c8 | 1640 | |
132e01b1 TP |
1641 | /* Decode the string P as an integral parameter. |
1642 | If the string is indeed an integer return its numeric value else | |
192babfd | 1643 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
1644 | If PNAME is zero just return DEFVAL, do not call error. */ |
1645 | ||
132e01b1 TP |
1646 | int |
1647 | read_integral_parameter (p, pname, defval) | |
192babfd TP |
1648 | const char *p; |
1649 | const char *pname; | |
1650 | const int defval; | |
132e01b1 | 1651 | { |
192babfd | 1652 | const char *endp = p; |
132e01b1 TP |
1653 | |
1654 | while (*endp) | |
1655 | { | |
0df6c2c7 | 1656 | if (ISDIGIT (*endp)) |
132e01b1 TP |
1657 | endp++; |
1658 | else | |
192babfd TP |
1659 | break; |
1660 | } | |
1661 | ||
1662 | if (*endp != 0) | |
1663 | { | |
1664 | if (pname != 0) | |
1f978f5f | 1665 | error ("invalid option `%s'", pname); |
192babfd | 1666 | return defval; |
132e01b1 TP |
1667 | } |
1668 | ||
1669 | return atoi (p); | |
1670 | } | |
4291d9c8 | 1671 | \f |
387c9294 | 1672 | /* This calls abort and is used to avoid problems when abort is a macro. |
4291d9c8 RS |
1673 | It is used when we need to pass the address of abort. */ |
1674 | ||
1675 | void | |
1676 | do_abort () | |
1677 | { | |
1678 | abort (); | |
1679 | } | |
1680 | ||
1681 | /* When `malloc.c' is compiled with `rcheck' defined, | |
1682 | it calls this function to report clobberage. */ | |
1683 | ||
1684 | void | |
1685 | botch (s) | |
854a97f0 | 1686 | const char *s ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1687 | { |
1688 | abort (); | |
1689 | } | |
4291d9c8 RS |
1690 | \f |
1691 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
1692 | if X is a power of 2. Otherwise, returns -1. |
1693 | ||
1694 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1695 | |
1696 | int | |
37366632 | 1697 | exact_log2_wide (x) |
b3694847 | 1698 | unsigned HOST_WIDE_INT x; |
4291d9c8 | 1699 | { |
b3694847 | 1700 | int log = 0; |
4291d9c8 RS |
1701 | /* Test for 0 or a power of 2. */ |
1702 | if (x == 0 || x != (x & -x)) | |
1703 | return -1; | |
1704 | while ((x >>= 1) != 0) | |
1705 | log++; | |
1706 | return log; | |
1707 | } | |
1708 | ||
1709 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1710 | If X is 0, return -1. |
1711 | ||
1712 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1713 | |
1714 | int | |
37366632 | 1715 | floor_log2_wide (x) |
b3694847 | 1716 | unsigned HOST_WIDE_INT x; |
4291d9c8 | 1717 | { |
b3694847 | 1718 | int log = -1; |
4291d9c8 RS |
1719 | while (x != 0) |
1720 | log++, | |
1721 | x >>= 1; | |
1722 | return log; | |
1723 | } | |
1724 | ||
a7023245 ZW |
1725 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
1726 | into ICE messages, which is much more user friendly. */ | |
4291d9c8 RS |
1727 | |
1728 | static void | |
a7023245 | 1729 | crash_signal (signo) |
a7023245 | 1730 | int signo; |
4291d9c8 | 1731 | { |
9d533cb5 | 1732 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
1733 | } |
1734 | ||
886e0865 GK |
1735 | /* Arrange to dump core on error. (The regular error message is still |
1736 | printed first, except in the case of abort().) */ | |
1737 | ||
1738 | static void | |
1739 | setup_core_dumping () | |
1740 | { | |
1741 | #ifdef SIGABRT | |
1742 | signal (SIGABRT, SIG_DFL); | |
1743 | #endif | |
1744 | #if defined(HAVE_SETRLIMIT) | |
1745 | { | |
1746 | struct rlimit rlim; | |
1747 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
1748 | fatal_io_error ("getting core file size maximum limit"); | |
1749 | rlim.rlim_cur = rlim.rlim_max; | |
1750 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
1751 | fatal_io_error ("setting core file size limit to maximum"); | |
1752 | } | |
1753 | #endif | |
1754 | diagnostic_abort_on_error (global_dc); | |
1755 | } | |
1756 | ||
1757 | ||
4291d9c8 | 1758 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 1759 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 1760 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 1761 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
1762 | |
1763 | void | |
1764 | strip_off_ending (name, len) | |
1765 | char *name; | |
1766 | int len; | |
1767 | { | |
2290e0ec | 1768 | int i; |
41077ce4 | 1769 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
1770 | { |
1771 | if (name[len - i] == '.') | |
1772 | { | |
1773 | name[len - i] = '\0'; | |
1774 | break; | |
1775 | } | |
1776 | } | |
4291d9c8 RS |
1777 | } |
1778 | ||
7dce5088 | 1779 | /* Output a quoted string. */ |
0f41302f | 1780 | |
7dce5088 PE |
1781 | void |
1782 | output_quoted_string (asm_file, string) | |
1783 | FILE *asm_file; | |
87e11268 | 1784 | const char *string; |
7dce5088 | 1785 | { |
e9a25f70 JL |
1786 | #ifdef OUTPUT_QUOTED_STRING |
1787 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1788 | #else | |
7dce5088 PE |
1789 | char c; |
1790 | ||
1791 | putc ('\"', asm_file); | |
1792 | while ((c = *string++) != 0) | |
1793 | { | |
042cdf71 ZW |
1794 | if (ISPRINT (c)) |
1795 | { | |
1796 | if (c == '\"' || c == '\\') | |
1797 | putc ('\\', asm_file); | |
1798 | putc (c, asm_file); | |
1799 | } | |
1800 | else | |
211a0cbe | 1801 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
1802 | } |
1803 | putc ('\"', asm_file); | |
e9a25f70 | 1804 | #endif |
7dce5088 PE |
1805 | } |
1806 | ||
211a0cbe GDR |
1807 | /* Output NAME into FILE after having turned it into something |
1808 | usable as an identifier in a target's assembly file. */ | |
1809 | void | |
1810 | output_clean_symbol_name (file, name) | |
41077ce4 KH |
1811 | FILE *file; |
1812 | const char *name; | |
211a0cbe GDR |
1813 | { |
1814 | /* Make a copy of NAME. */ | |
da7ac8f1 | 1815 | char *id = xstrdup (name); |
211a0cbe GDR |
1816 | |
1817 | /* Make it look like a valid identifier for an assembler. */ | |
1818 | clean_symbol_name (id); | |
41077ce4 | 1819 | |
ce9e3a6d | 1820 | fputs (id, file); |
211a0cbe GDR |
1821 | free (id); |
1822 | } | |
1823 | ||
1824 | ||
4291d9c8 RS |
1825 | /* Output a file name in the form wanted by System V. */ |
1826 | ||
1827 | void | |
1828 | output_file_directive (asm_file, input_name) | |
1829 | FILE *asm_file; | |
87e11268 | 1830 | const char *input_name; |
4291d9c8 RS |
1831 | { |
1832 | int len = strlen (input_name); | |
87e11268 | 1833 | const char *na = input_name + len; |
4291d9c8 RS |
1834 | |
1835 | /* NA gets INPUT_NAME sans directory names. */ | |
1836 | while (na > input_name) | |
1837 | { | |
1a8bb3dd | 1838 | if (IS_DIR_SEPARATOR (na[-1])) |
9cabb1d8 | 1839 | break; |
4291d9c8 RS |
1840 | na--; |
1841 | } | |
1842 | ||
1843 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1844 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1845 | #else | |
1846 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1847 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1848 | #else | |
7dce5088 PE |
1849 | fprintf (asm_file, "\t.file\t"); |
1850 | output_quoted_string (asm_file, na); | |
1851 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1852 | #endif |
1853 | #endif | |
1854 | } | |
1855 | \f | |
61098249 RH |
1856 | /* Routine to open a dump file. Return true if the dump file is enabled. */ |
1857 | ||
1858 | static int | |
1859 | open_dump_file (index, decl) | |
1860 | enum dump_file_index index; | |
1861 | tree decl; | |
032713aa | 1862 | { |
61098249 RH |
1863 | char *dump_name; |
1864 | const char *open_arg; | |
1865 | char seq[16]; | |
1866 | ||
1867 | if (! dump_file[index].enabled) | |
1868 | return 0; | |
0f41302f | 1869 | |
2a9a326b AS |
1870 | timevar_push (TV_DUMP); |
1871 | if (rtl_dump_file != NULL) | |
1872 | fclose (rtl_dump_file); | |
854a97f0 | 1873 | |
6baf9874 | 1874 | sprintf (seq, DUMPFILE_FORMAT, index); |
61098249 | 1875 | |
2a9a326b AS |
1876 | if (! dump_file[index].initialized) |
1877 | { | |
1878 | /* If we've not initialized the files, do so now. */ | |
1879 | if (graph_dump_format != no_graph | |
1880 | && dump_file[index].graph_dump_p) | |
1881 | { | |
1882 | dump_name = concat (seq, dump_file[index].extension, NULL); | |
1883 | clean_graph_dump_file (dump_base_name, dump_name); | |
1884 | free (dump_name); | |
1885 | } | |
1886 | dump_file[index].initialized = 1; | |
1887 | open_arg = "w"; | |
1888 | } | |
1889 | else | |
1890 | open_arg = "a"; | |
61098249 | 1891 | |
2a9a326b AS |
1892 | dump_name = concat (dump_base_name, seq, |
1893 | dump_file[index].extension, NULL); | |
61098249 | 1894 | |
2a9a326b AS |
1895 | rtl_dump_file = fopen (dump_name, open_arg); |
1896 | if (rtl_dump_file == NULL) | |
400500c4 | 1897 | fatal_io_error ("can't open %s", dump_name); |
854a97f0 | 1898 | |
2a9a326b | 1899 | free (dump_name); |
032713aa | 1900 | |
2a9a326b | 1901 | if (decl) |
0f72964f JH |
1902 | fprintf (rtl_dump_file, "\n;; Function %s%s\n\n", |
1903 | (*lang_hooks.decl_printable_name) (decl, 2), | |
1904 | cfun->function_frequency == FUNCTION_FREQUENCY_HOT | |
1905 | ? " (hot)" | |
1906 | : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED | |
1907 | ? " (unlikely executed)" | |
1908 | : ""); | |
2a9a326b AS |
1909 | |
1910 | timevar_pop (TV_DUMP); | |
61098249 | 1911 | return 1; |
032713aa NC |
1912 | } |
1913 | ||
1914 | /* Routine to close a dump file. */ | |
61098249 | 1915 | |
032713aa | 1916 | static void |
61098249 RH |
1917 | close_dump_file (index, func, insns) |
1918 | enum dump_file_index index; | |
58782098 | 1919 | void (*func) PARAMS ((FILE *, rtx)); |
854a97f0 | 1920 | rtx insns; |
032713aa | 1921 | { |
61098249 RH |
1922 | if (! rtl_dump_file) |
1923 | return; | |
1924 | ||
2a9a326b AS |
1925 | timevar_push (TV_DUMP); |
1926 | if (insns | |
1927 | && graph_dump_format != no_graph | |
1928 | && dump_file[index].graph_dump_p) | |
1929 | { | |
1930 | char seq[16]; | |
1931 | char *suffix; | |
61098249 | 1932 | |
6baf9874 | 1933 | sprintf (seq, DUMPFILE_FORMAT, index); |
2a9a326b AS |
1934 | suffix = concat (seq, dump_file[index].extension, NULL); |
1935 | print_rtl_graph_with_bb (dump_base_name, suffix, insns); | |
1936 | free (suffix); | |
1937 | } | |
61098249 | 1938 | |
2a9a326b AS |
1939 | if (func && insns) |
1940 | func (rtl_dump_file, insns); | |
854a97f0 | 1941 | |
2a9a326b AS |
1942 | fflush (rtl_dump_file); |
1943 | fclose (rtl_dump_file); | |
854a97f0 | 1944 | |
2a9a326b AS |
1945 | rtl_dump_file = NULL; |
1946 | timevar_pop (TV_DUMP); | |
dfe1a916 DE |
1947 | } |
1948 | ||
32291f94 MM |
1949 | /* Do any final processing required for the declarations in VEC, of |
1950 | which there are LEN. We write out inline functions and variables | |
1951 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 1952 | Returns nonzero if anything was put out. */ |
854a97f0 | 1953 | |
32291f94 MM |
1954 | int |
1955 | wrapup_global_declarations (vec, len) | |
1956 | tree *vec; | |
1957 | int len; | |
1958 | { | |
1959 | tree decl; | |
1960 | int i; | |
1961 | int reconsider; | |
1962 | int output_something = 0; | |
1963 | ||
1964 | for (i = 0; i < len; i++) | |
1965 | { | |
1966 | decl = vec[i]; | |
854a97f0 | 1967 | |
2b59501b MA |
1968 | /* We're not deferring this any longer. Assignment is |
1969 | conditional to avoid needlessly dirtying PCH pages. */ | |
1970 | if (DECL_DEFER_OUTPUT (decl) != 0) | |
1971 | DECL_DEFER_OUTPUT (decl) = 0; | |
854a97f0 | 1972 | |
48a7a235 NB |
1973 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) |
1974 | (*lang_hooks.finish_incomplete_decl) (decl); | |
32291f94 MM |
1975 | } |
1976 | ||
1977 | /* Now emit any global variables or functions that we have been | |
1978 | putting off. We need to loop in case one of the things emitted | |
1979 | here references another one which comes earlier in the list. */ | |
1980 | do | |
1981 | { | |
1982 | reconsider = 0; | |
1983 | for (i = 0; i < len; i++) | |
1984 | { | |
1985 | decl = vec[i]; | |
1986 | ||
1987 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1988 | continue; | |
1989 | ||
1990 | /* Don't write out static consts, unless we still need them. | |
1991 | ||
1992 | We also keep static consts if not optimizing (for debugging), | |
1993 | unless the user specified -fno-keep-static-consts. | |
1994 | ??? They might be better written into the debug information. | |
1995 | This is possible when using DWARF. | |
1996 | ||
1997 | A language processor that wants static constants to be always | |
1998 | written out (even if it is not used) is responsible for | |
1999 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
2000 | calls rest_of_decl_compilation from finish_decl. | |
2001 | One motivation for this is that is conventional in some | |
2002 | environments to write things like: | |
2003 | static const char rcsid[] = "... version string ..."; | |
2004 | intending to force the string to be in the executable. | |
2005 | ||
2006 | A language processor that would prefer to have unneeded | |
2007 | static constants "optimized away" would just defer writing | |
2008 | them out until here. E.g. C++ does this, because static | |
2009 | constants are often defined in header files. | |
2010 | ||
2011 | ??? A tempting alternative (for both C and C++) would be | |
2012 | to force a constant to be written if and only if it is | |
2013 | defined in a main file, as opposed to an include file. */ | |
2014 | ||
5cc90635 | 2015 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) |
32291f94 | 2016 | { |
5cc90635 JM |
2017 | bool needed = 1; |
2018 | ||
2019 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
2020 | /* needed */; | |
2021 | else if (DECL_COMDAT (decl)) | |
2022 | needed = 0; | |
2023 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
2024 | && (optimize || !flag_keep_static_consts | |
2025 | || DECL_ARTIFICIAL (decl))) | |
2026 | needed = 0; | |
2027 | ||
2028 | if (needed) | |
2029 | { | |
2030 | reconsider = 1; | |
2031 | rest_of_decl_compilation (decl, NULL, 1, 1); | |
2032 | } | |
32291f94 MM |
2033 | } |
2034 | ||
2035 | if (TREE_CODE (decl) == FUNCTION_DECL | |
2036 | && DECL_INITIAL (decl) != 0 | |
2037 | && DECL_SAVED_INSNS (decl) != 0 | |
2038 | && (flag_keep_inline_functions | |
59182242 | 2039 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
2040 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
2041 | { | |
2042 | reconsider = 1; | |
32291f94 | 2043 | output_inline_function (decl); |
32291f94 MM |
2044 | } |
2045 | } | |
2046 | ||
2047 | if (reconsider) | |
2048 | output_something = 1; | |
2049 | } | |
2050 | while (reconsider); | |
2051 | ||
2052 | return output_something; | |
2053 | } | |
2054 | ||
2055 | /* Issue appropriate warnings for the global declarations in VEC (of | |
2056 | which there are LEN). Output debugging information for them. */ | |
854a97f0 | 2057 | |
32291f94 MM |
2058 | void |
2059 | check_global_declarations (vec, len) | |
2060 | tree *vec; | |
2061 | int len; | |
2062 | { | |
2063 | tree decl; | |
2064 | int i; | |
2065 | ||
2066 | for (i = 0; i < len; i++) | |
2067 | { | |
2068 | decl = vec[i]; | |
2069 | ||
2070 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
2071 | && ! TREE_ASM_WRITTEN (decl)) | |
2072 | /* Cancel the RTL for this decl so that, if debugging info | |
2073 | output for global variables is still to come, | |
2074 | this one will be omitted. */ | |
19e7881c | 2075 | SET_DECL_RTL (decl, NULL_RTX); |
32291f94 MM |
2076 | |
2077 | /* Warn about any function | |
2078 | declared static but not defined. | |
2079 | We don't warn about variables, | |
2080 | because many programs have static variables | |
2081 | that exist only to get some text into the object file. */ | |
2082 | if (TREE_CODE (decl) == FUNCTION_DECL | |
078721e1 | 2083 | && (warn_unused_function |
32291f94 MM |
2084 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
2085 | && DECL_INITIAL (decl) == 0 | |
2086 | && DECL_EXTERNAL (decl) | |
2087 | && ! DECL_ARTIFICIAL (decl) | |
2088 | && ! TREE_PUBLIC (decl)) | |
2089 | { | |
2090 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
2091 | pedwarn_with_decl (decl, | |
2092 | "`%s' used but never defined"); | |
2093 | else | |
2094 | warning_with_decl (decl, | |
2095 | "`%s' declared `static' but never defined"); | |
2096 | /* This symbol is effectively an "extern" declaration now. */ | |
2097 | TREE_PUBLIC (decl) = 1; | |
2098 | assemble_external (decl); | |
2099 | } | |
2100 | ||
ef4f94ac RH |
2101 | /* Warn about static fns or vars defined but not used. */ |
2102 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
2103 | || (warn_unused_variable && TREE_CODE (decl) == VAR_DECL)) | |
2104 | && ! TREE_USED (decl) | |
2105 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
2106 | to handle multiple external decls in different scopes. */ | |
2107 | && ! TREE_USED (DECL_NAME (decl)) | |
32291f94 MM |
2108 | && ! DECL_EXTERNAL (decl) |
2109 | && ! TREE_PUBLIC (decl) | |
ef4f94ac RH |
2110 | /* Global register variables must be declared to reserve them. */ |
2111 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
2112 | /* Otherwise, ask the language. */ | |
2113 | && (*lang_hooks.decls.warn_unused_global) (decl)) | |
32291f94 MM |
2114 | warning_with_decl (decl, "`%s' defined but not used"); |
2115 | ||
33c21f5c HPN |
2116 | /* Avoid confusing the debug information machinery when there are |
2117 | errors. */ | |
2118 | if (errorcount == 0 && sorrycount == 0) | |
2119 | { | |
2120 | timevar_push (TV_SYMOUT); | |
2121 | (*debug_hooks->global_decl) (decl); | |
2122 | timevar_pop (TV_SYMOUT); | |
2123 | } | |
32291f94 MM |
2124 | } |
2125 | } | |
032713aa | 2126 | |
68723fae MM |
2127 | /* Save the current INPUT_FILENAME and LINENO on the top entry in the |
2128 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the | |
2129 | INPUT_FILENAME and LINENO accordingly. */ | |
2130 | ||
2131 | void | |
2132 | push_srcloc (file, line) | |
3b304f5b | 2133 | const char *file; |
68723fae MM |
2134 | int line; |
2135 | { | |
2136 | struct file_stack *fs; | |
2137 | ||
2138 | if (input_file_stack) | |
2139 | { | |
2140 | input_file_stack->name = input_filename; | |
2141 | input_file_stack->line = lineno; | |
2142 | } | |
2143 | ||
2144 | fs = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2145 | fs->name = input_filename = file; | |
2146 | fs->line = lineno = line; | |
68723fae MM |
2147 | fs->next = input_file_stack; |
2148 | input_file_stack = fs; | |
2149 | input_file_stack_tick++; | |
2150 | } | |
2151 | ||
2152 | /* Pop the top entry off the stack of presently open source files. | |
2153 | Restore the INPUT_FILENAME and LINENO from the new topmost entry on | |
2154 | the stack. */ | |
2155 | ||
2156 | void | |
2157 | pop_srcloc () | |
2158 | { | |
2159 | struct file_stack *fs; | |
854a97f0 | 2160 | |
68723fae MM |
2161 | fs = input_file_stack; |
2162 | input_file_stack = fs->next; | |
2163 | free (fs); | |
2164 | input_file_stack_tick++; | |
ebc7f293 | 2165 | /* The initial source file is never popped. */ |
68723fae MM |
2166 | if (!input_file_stack) |
2167 | abort (); | |
2168 | input_filename = input_file_stack->name; | |
2169 | lineno = input_file_stack->line; | |
2170 | } | |
2171 | ||
f5e99456 NB |
2172 | /* Compile an entire translation unit. Write a file of assembly |
2173 | output and various debugging dumps. */ | |
4291d9c8 RS |
2174 | |
2175 | static void | |
f5e99456 | 2176 | compile_file () |
4291d9c8 | 2177 | { |
4291d9c8 RS |
2178 | /* Initialize yet another pass. */ |
2179 | ||
b93a436e | 2180 | init_final (main_input_filename); |
ea67fe71 | 2181 | init_branch_prob (aux_base_name); |
4291d9c8 | 2182 | |
2a9a326b | 2183 | timevar_push (TV_PARSE); |
4291d9c8 | 2184 | |
52dabb6c NB |
2185 | /* Call the parser, which parses the entire file (calling |
2186 | rest_of_compilation for each function). */ | |
ff45c01e | 2187 | (*lang_hooks.parse_file) (set_yydebug); |
4291d9c8 | 2188 | |
7cb4ff28 ZW |
2189 | /* In case there were missing block closers, |
2190 | get us back to the global binding level. */ | |
37207ee7 | 2191 | (*lang_hooks.clear_binding_stack) (); |
4291d9c8 RS |
2192 | |
2193 | /* Compilation is now finished except for writing | |
2194 | what's left of the symbol table output. */ | |
2a9a326b | 2195 | timevar_pop (TV_PARSE); |
4291d9c8 | 2196 | |
1fe65c00 | 2197 | if (flag_syntax_only) |
22703ccc | 2198 | return; |
1fe65c00 | 2199 | |
2b59501b | 2200 | (*lang_hooks.decls.final_write_globals)(); |
4291d9c8 | 2201 | |
4977bab6 ZW |
2202 | if (profile_arc_flag) |
2203 | /* This must occur after the loop to output deferred functions. | |
2204 | Else the profiler initializer would not be emitted if all the | |
2205 | functions in this compilation unit were deferred. */ | |
2206 | create_profiler (); | |
2668793e | 2207 | |
4b8af8d9 JM |
2208 | /* Write out any pending weak symbol declarations. */ |
2209 | ||
2210 | weak_finish (); | |
2211 | ||
854a97f0 | 2212 | /* Do dbx symbols. */ |
2a9a326b | 2213 | timevar_push (TV_SYMOUT); |
7f905405 | 2214 | |
0021b564 JM |
2215 | #ifdef DWARF2_UNWIND_INFO |
2216 | if (dwarf2out_do_frame ()) | |
2217 | dwarf2out_frame_finish (); | |
2218 | #endif | |
2219 | ||
e2a12aca | 2220 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 2221 | timevar_pop (TV_SYMOUT); |
9a666dda | 2222 | |
4291d9c8 RS |
2223 | /* Output some stuff at end of file if nec. */ |
2224 | ||
2a1ee410 RH |
2225 | dw2_output_indirect_constants (); |
2226 | ||
51891abe | 2227 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
61098249 | 2228 | { |
2a9a326b | 2229 | timevar_push (TV_DUMP); |
61098249 | 2230 | open_dump_file (DFI_bp, NULL); |
51891abe JH |
2231 | |
2232 | end_branch_prob (); | |
2233 | ||
61098249 | 2234 | close_dump_file (DFI_bp, NULL, NULL_RTX); |
2a9a326b | 2235 | timevar_pop (TV_DUMP); |
61098249 | 2236 | } |
854a97f0 | 2237 | |
4291d9c8 | 2238 | #ifdef ASM_FILE_END |
b93a436e | 2239 | ASM_FILE_END (asm_out_file); |
4291d9c8 RS |
2240 | #endif |
2241 | ||
acb0db7b ZW |
2242 | /* Attach a special .ident directive to the end of the file to identify |
2243 | the version of GCC which compiled this code. The format of the .ident | |
2244 | string is patterned after the ones produced by native SVR4 compilers. */ | |
2245 | #ifdef IDENT_ASM_OP | |
2246 | if (!flag_no_ident) | |
2247 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
2248 | IDENT_ASM_OP, version_string); | |
2249 | #endif | |
2250 | ||
61098249 | 2251 | if (optimize > 0 && open_dump_file (DFI_combine, NULL)) |
4291d9c8 | 2252 | { |
2a9a326b AS |
2253 | timevar_push (TV_DUMP); |
2254 | dump_combine_total_stats (rtl_dump_file); | |
61098249 | 2255 | close_dump_file (DFI_combine, NULL, NULL_RTX); |
2a9a326b | 2256 | timevar_pop (TV_DUMP); |
4291d9c8 | 2257 | } |
4291d9c8 RS |
2258 | } |
2259 | \f | |
2260 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
2261 | and TYPE_DECL nodes. | |
2262 | ||
ef6748cb MM |
2263 | This does nothing for local (non-static) variables, unless the |
2264 | variable is a register variable with an ASMSPEC. In that case, or | |
d558416e | 2265 | if the variable is not an automatic, it sets up the RTL and |
ef6748cb MM |
2266 | outputs any assembler code (label definition, storage allocation |
2267 | and initialization). | |
4291d9c8 RS |
2268 | |
2269 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2270 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2271 | if this declaration is not within a function. */ | |
2272 | ||
2273 | void | |
2274 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
2275 | tree decl; | |
87e11268 | 2276 | const char *asmspec; |
4291d9c8 RS |
2277 | int top_level; |
2278 | int at_end; | |
2279 | { | |
b14707c3 RH |
2280 | /* We deferred calling assemble_alias so that we could collect |
2281 | other attributes such as visibility. Emit the alias now. */ | |
2282 | { | |
2283 | tree alias; | |
2284 | alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); | |
2285 | if (alias) | |
2286 | { | |
2287 | alias = TREE_VALUE (TREE_VALUE (alias)); | |
2288 | alias = get_identifier (TREE_STRING_POINTER (alias)); | |
9cabb1d8 | 2289 | assemble_alias (decl, alias); |
b14707c3 RH |
2290 | } |
2291 | } | |
2292 | ||
4291d9c8 RS |
2293 | /* Forward declarations for nested functions are not "external", |
2294 | but we need to treat them as if they were. */ | |
216d5cdd | 2295 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 | 2296 | || TREE_CODE (decl) == FUNCTION_DECL) |
2a9a326b AS |
2297 | { |
2298 | timevar_push (TV_VARCONST); | |
b14707c3 | 2299 | |
8ce0a8a5 | 2300 | if (asmspec) |
9cabb1d8 | 2301 | make_decl_rtl (decl, asmspec); |
b14707c3 RH |
2302 | |
2303 | /* Don't output anything when a tentative file-scope definition | |
2304 | is seen. But at end of compilation, do output code for them. */ | |
8cf8d8a2 JM |
2305 | if (at_end || !DECL_DEFER_OUTPUT (decl)) |
2306 | assemble_variable (decl, top_level, at_end, 0); | |
35d8c8e2 SB |
2307 | |
2308 | #ifdef ASM_FINISH_DECLARE_OBJECT | |
2a9a326b AS |
2309 | if (decl == last_assemble_variable_decl) |
2310 | { | |
2311 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2312 | top_level, at_end); | |
2313 | } | |
35d8c8e2 | 2314 | #endif |
b14707c3 | 2315 | |
2a9a326b AS |
2316 | timevar_pop (TV_VARCONST); |
2317 | } | |
216d5cdd | 2318 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2319 | { |
2320 | if (decode_reg_name (asmspec) >= 0) | |
2321 | { | |
19e7881c | 2322 | SET_DECL_RTL (decl, NULL_RTX); |
6c418184 | 2323 | make_decl_rtl (decl, asmspec); |
4291d9c8 RS |
2324 | } |
2325 | else | |
8f17b5c5 MM |
2326 | { |
2327 | error ("invalid register name `%s' for register variable", asmspec); | |
2328 | DECL_REGISTER (decl) = 0; | |
19e7881c MM |
2329 | if (!top_level) |
2330 | expand_decl (decl); | |
8f17b5c5 | 2331 | } |
4291d9c8 | 2332 | } |
f246a305 RS |
2333 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2334 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2335 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2336 | { |
2337 | timevar_push (TV_SYMOUT); | |
2338 | dbxout_symbol (decl, 0); | |
2339 | timevar_pop (TV_SYMOUT); | |
2340 | } | |
4291d9c8 RS |
2341 | #endif |
2342 | #ifdef SDB_DEBUGGING_INFO | |
2343 | else if (write_symbols == SDB_DEBUG && top_level | |
2344 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2345 | { |
2346 | timevar_push (TV_SYMOUT); | |
2347 | sdbout_symbol (decl, 0); | |
2348 | timevar_pop (TV_SYMOUT); | |
2349 | } | |
4291d9c8 | 2350 | #endif |
cc0017a9 ZD |
2351 | #ifdef DWARF2_DEBUGGING_INFO |
2352 | else if ((write_symbols == DWARF2_DEBUG | |
2353 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
2354 | && top_level | |
2355 | && TREE_CODE (decl) == TYPE_DECL) | |
2356 | { | |
2357 | timevar_push (TV_SYMOUT); | |
2358 | dwarf2out_decl (decl); | |
2359 | timevar_pop (TV_SYMOUT); | |
2360 | } | |
2361 | #endif | |
4291d9c8 RS |
2362 | } |
2363 | ||
2364 | /* Called after finishing a record, union or enumeral type. */ | |
2365 | ||
2366 | void | |
2367 | rest_of_type_compilation (type, toplev) | |
35d8c8e2 SB |
2368 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) \ |
2369 | || defined (SDB_DEBUGGING_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
4291d9c8 RS |
2370 | tree type; |
2371 | int toplev; | |
114791ea KG |
2372 | #else |
2373 | tree type ATTRIBUTE_UNUSED; | |
2374 | int toplev ATTRIBUTE_UNUSED; | |
2375 | #endif | |
4291d9c8 | 2376 | { |
33c21f5c HPN |
2377 | /* Avoid confusing the debug information machinery when there are |
2378 | errors. */ | |
2379 | if (errorcount != 0 || sorrycount != 0) | |
2380 | return; | |
2381 | ||
2a9a326b | 2382 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2383 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2384 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2385 | dbxout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 RS |
2386 | #endif |
2387 | #ifdef SDB_DEBUGGING_INFO | |
2388 | if (write_symbols == SDB_DEBUG) | |
d8d1d62b | 2389 | sdbout_symbol (TYPE_STUB_DECL (type), !toplev); |
881c6935 JM |
2390 | #endif |
2391 | #ifdef DWARF2_DEBUGGING_INFO | |
7a0c8d71 DR |
2392 | if ((write_symbols == DWARF2_DEBUG |
2393 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
2394 | && toplev) | |
881c6935 | 2395 | dwarf2out_decl (TYPE_STUB_DECL (type)); |
4291d9c8 | 2396 | #endif |
2a9a326b | 2397 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2398 | } |
2399 | ||
52dabb6c | 2400 | /* This is called from finish_function (within langhooks.parse_file) |
4291d9c8 RS |
2401 | after each top-level definition is parsed. |
2402 | It is supposed to compile that function or variable | |
2403 | and output the assembler code for it. | |
2404 | After we return, the tree storage is freed. */ | |
2405 | ||
2406 | void | |
2407 | rest_of_compilation (decl) | |
2408 | tree decl; | |
2409 | { | |
b3694847 | 2410 | rtx insns; |
4291d9c8 | 2411 | int tem; |
ab40ad2b | 2412 | int failure = 0; |
c4403371 | 2413 | int rebuild_label_notes_after_reload; |
4291d9c8 | 2414 | |
2a9a326b AS |
2415 | timevar_push (TV_REST_OF_COMPILATION); |
2416 | ||
1b3d8f8a GK |
2417 | /* Now that we're out of the frontend, we shouldn't have any more |
2418 | CONCATs anywhere. */ | |
2419 | generating_concat_p = 0; | |
2420 | ||
d511f9d5 AO |
2421 | /* When processing delayed functions, prepare_function_start() won't |
2422 | have been run to re-initialize it. */ | |
2423 | cse_not_expected = ! optimize; | |
2424 | ||
fcd7f76b JM |
2425 | /* First, make sure that NOTE_BLOCK is set correctly for each |
2426 | NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */ | |
116eebd6 MM |
2427 | if (!cfun->x_whole_function_mode_p) |
2428 | identify_blocks (); | |
fcd7f76b | 2429 | |
e619323d DM |
2430 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK |
2431 | tree in sensible shape. So, we just recalculate it here. */ | |
01d939e8 | 2432 | if (cfun->x_whole_function_mode_p) |
116eebd6 | 2433 | reorder_blocks (); |
e619323d | 2434 | |
1f8f4a0b MM |
2435 | init_flow (); |
2436 | ||
4291d9c8 RS |
2437 | /* If we are reconsidering an inline function |
2438 | at the end of compilation, skip the stuff for making it inline. */ | |
2439 | ||
2440 | if (DECL_SAVED_INSNS (decl) == 0) | |
2441 | { | |
956d6950 | 2442 | int inlinable = 0; |
14a774a9 | 2443 | tree parent; |
dff01034 | 2444 | const char *lose; |
4291d9c8 | 2445 | |
14a774a9 RK |
2446 | /* If this is nested inside an inlined external function, pretend |
2447 | it was only declared. Since we cannot inline such functions, | |
2448 | generating code for this one is not only not necessary but will | |
2449 | confuse some debugging output writers. */ | |
2450 | for (parent = DECL_CONTEXT (current_function_decl); | |
854a97f0 | 2451 | parent != NULL_TREE; |
140b60b4 | 2452 | parent = get_containing_scope (parent)) |
3e038608 MM |
2453 | if (TREE_CODE (parent) == FUNCTION_DECL |
2454 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
14a774a9 RK |
2455 | { |
2456 | DECL_INITIAL (decl) = 0; | |
2457 | goto exit_rest_of_compilation; | |
2458 | } | |
bec80a45 MM |
2459 | else if (TYPE_P (parent)) |
2460 | /* A function in a local class should be treated normally. */ | |
2461 | break; | |
14a774a9 | 2462 | |
4291d9c8 | 2463 | /* If requested, consider whether to make this function inline. */ |
5262d6b6 | 2464 | if ((DECL_INLINE (decl) && !flag_no_inline) |
b850de4f | 2465 | || flag_inline_functions) |
2a9a326b AS |
2466 | { |
2467 | timevar_push (TV_INTEGRATION); | |
2468 | lose = function_cannot_inline_p (decl); | |
2469 | timevar_pop (TV_INTEGRATION); | |
2470 | if (lose || ! optimize) | |
2471 | { | |
2472 | if (warn_inline && DECL_INLINE (decl)) | |
2473 | warning_with_decl (decl, lose); | |
2474 | DECL_ABSTRACT_ORIGIN (decl) = 0; | |
2475 | /* Don't really compile an extern inline function. | |
2476 | If we can't make it inline, pretend | |
2477 | it was only declared. */ | |
2478 | if (DECL_EXTERNAL (decl)) | |
2479 | { | |
2480 | DECL_INITIAL (decl) = 0; | |
2481 | goto exit_rest_of_compilation; | |
2482 | } | |
2483 | } | |
2484 | else | |
2485 | /* ??? Note that this has the effect of making it look | |
2486 | like "inline" was specified for a function if we choose | |
2487 | to inline it. This isn't quite right, but it's | |
2488 | probably not worth the trouble to fix. */ | |
2489 | inlinable = DECL_INLINE (decl) = 1; | |
2490 | } | |
4291d9c8 RS |
2491 | |
2492 | insns = get_insns (); | |
2493 | ||
2494 | /* Dump the rtl code if we are dumping rtl. */ | |
2495 | ||
61098249 | 2496 | if (open_dump_file (DFI_rtl, decl)) |
032713aa | 2497 | { |
032713aa NC |
2498 | if (DECL_SAVED_INSNS (decl)) |
2499 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
61098249 | 2500 | close_dump_file (DFI_rtl, print_rtl, insns); |
032713aa | 2501 | } |
4291d9c8 | 2502 | |
52a11cbf RH |
2503 | /* Convert from NOTE_INSN_EH_REGION style notes, and do other |
2504 | sorts of eh initialization. Delay this until after the | |
2505 | initial rtl dump so that we can see the original nesting. */ | |
2506 | convert_from_eh_region_ranges (); | |
2507 | ||
4291d9c8 | 2508 | /* If function is inline, and we don't yet know whether to |
2bb74773 DJ |
2509 | compile it by itself, defer decision till end of compilation. |
2510 | wrapup_global_declarations will (indirectly) call | |
2511 | rest_of_compilation again for those functions that need to | |
2512 | be output. Also defer those functions that we are supposed | |
2513 | to defer. */ | |
36edd3cc | 2514 | |
fcd7f76b | 2515 | if (inlinable |
36edd3cc BS |
2516 | || (DECL_INLINE (decl) |
2517 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
303a3927 | 2518 | && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) |
36edd3cc BS |
2519 | && ! flag_keep_inline_functions) |
2520 | || DECL_EXTERNAL (decl)))) | |
fcd7f76b | 2521 | DECL_DEFER_OUTPUT (decl) = 1; |
951af26e | 2522 | |
f1f39752 | 2523 | if (DECL_INLINE (decl)) |
cc712abf | 2524 | /* DWARF wants separate debugging info for abstract and |
f1f39752 JM |
2525 | concrete instances of all inline functions, including those |
2526 | declared inline but not inlined, and those inlined even | |
2527 | though they weren't declared inline. Conveniently, that's | |
2528 | what DECL_INLINE means at this point. */ | |
2b85879e | 2529 | (*debug_hooks->deferred_inline_function) (decl); |
f1f39752 | 2530 | |
fcd7f76b JM |
2531 | if (DECL_DEFER_OUTPUT (decl)) |
2532 | { | |
f93dacbd | 2533 | /* If -Wreturn-type, we have to do a bit of compilation. We just |
4793dca1 | 2534 | want to call cleanup the cfg to figure out whether or not we can |
f93dacbd | 2535 | fall off the end of the function; we do the minimum amount of |
4793dca1 | 2536 | work necessary to make that safe. */ |
a701efba | 2537 | if (warn_return_type) |
937522b5 | 2538 | { |
a701efba | 2539 | int saved_optimize = optimize; |
f93dacbd | 2540 | |
a701efba | 2541 | optimize = 0; |
4793dca1 | 2542 | rebuild_jump_labels (insns); |
a701efba | 2543 | find_exception_handler_labels (); |
4793dca1 | 2544 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
0068fd96 | 2545 | cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP); |
a701efba | 2546 | optimize = saved_optimize; |
3c030e88 | 2547 | |
f5143c46 | 2548 | /* CFG is no longer maintained up-to-date. */ |
3c030e88 | 2549 | free_bb_for_insn (); |
a701efba MM |
2550 | } |
2551 | ||
b6128b8c | 2552 | set_nothrow_function_flags (); |
dd1ba632 JM |
2553 | if (current_function_nothrow) |
2554 | /* Now we know that this can't throw; set the flag for the benefit | |
2555 | of other functions later in this translation unit. */ | |
2556 | TREE_NOTHROW (current_function_decl) = 1; | |
2557 | ||
2a9a326b | 2558 | timevar_push (TV_INTEGRATION); |
f93dacbd | 2559 | save_for_inline (decl); |
2a9a326b | 2560 | timevar_pop (TV_INTEGRATION); |
49ad7cfa | 2561 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; |
a701efba | 2562 | goto exit_rest_of_compilation; |
4291d9c8 RS |
2563 | } |
2564 | ||
b8471b65 | 2565 | /* If specified extern inline but we aren't inlining it, we are |
1cbe6eb6 JM |
2566 | done. This goes for anything that gets here with DECL_EXTERNAL |
2567 | set, not just things with DECL_INLINE. */ | |
2568 | if (DECL_EXTERNAL (decl)) | |
b8471b65 RK |
2569 | goto exit_rest_of_compilation; |
2570 | } | |
07af9d16 | 2571 | |
c28abdf0 RH |
2572 | /* If we're emitting a nested function, make sure its parent gets |
2573 | emitted as well. Doing otherwise confuses debug info. */ | |
2574 | { | |
2575 | tree parent; | |
2576 | for (parent = DECL_CONTEXT (current_function_decl); | |
2577 | parent != NULL_TREE; | |
2578 | parent = get_containing_scope (parent)) | |
2579 | if (TREE_CODE (parent) == FUNCTION_DECL) | |
2580 | TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1; | |
2581 | } | |
2582 | ||
2583 | /* We are now committed to emitting code for this function. Do any | |
2584 | preparation, such as emitting abstract debug info for the inline | |
2585 | before it gets mangled by optimization. */ | |
2586 | if (DECL_INLINE (decl)) | |
2587 | (*debug_hooks->outlining_inline_function) (decl); | |
2588 | ||
2589 | /* Remove any notes we don't need. That will make iterating | |
2590 | over the instruction sequence faster, and allow the garbage | |
2591 | collector to reclaim the memory used by the notes. */ | |
2592 | remove_unnecessary_notes (); | |
2593 | reorder_blocks (); | |
2594 | ||
1f8f4a0b | 2595 | ggc_collect (); |
0a1c58a2 | 2596 | |
49ad7cfa BS |
2597 | /* Initialize some variables used by the optimizers. */ |
2598 | init_function_for_compilation (); | |
2599 | ||
951af26e JM |
2600 | if (! DECL_DEFER_OUTPUT (decl)) |
2601 | TREE_ASM_WRITTEN (decl) = 1; | |
4291d9c8 | 2602 | |
659e47fb AH |
2603 | /* Now that integrate will no longer see our rtl, we need not |
2604 | distinguish between the return value of this function and the | |
2605 | return value of called functions. Also, we can remove all SETs | |
2606 | of subregs of hard registers; they are only here because of | |
9cabb1d8 | 2607 | integrate. Also, we can now initialize pseudos intended to |
c0e7830f | 2608 | carry magic hard reg data throughout the function. */ |
4291d9c8 | 2609 | rtx_equal_function_value_matters = 0; |
659e47fb | 2610 | purge_hard_subreg_sets (get_insns ()); |
21c7361e | 2611 | |
6c40858f RH |
2612 | /* Early return if there were errors. We can run afoul of our |
2613 | consistency checks, and there's not really much point in fixing them. | |
2614 | Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */ | |
2615 | if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
2616 | || errorcount || sorrycount) | |
a18820c6 | 2617 | goto exit_rest_of_compilation; |
4291d9c8 | 2618 | |
969d70ca JH |
2619 | timevar_push (TV_JUMP); |
2620 | open_dump_file (DFI_sibling, decl); | |
2621 | insns = get_insns (); | |
2622 | rebuild_jump_labels (insns); | |
2623 | find_exception_handler_labels (); | |
2624 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
d92b4486 | 2625 | |
969d70ca JH |
2626 | delete_unreachable_blocks (); |
2627 | ||
2628 | /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */ | |
d50672ef JH |
2629 | if (flag_guess_branch_prob) |
2630 | { | |
2631 | timevar_push (TV_BRANCH_PROB); | |
2632 | note_prediction_to_br_prob (); | |
2633 | timevar_pop (TV_BRANCH_PROB); | |
2634 | } | |
969d70ca | 2635 | |
9d9e5c09 RH |
2636 | /* We may have potential sibling or tail recursion sites. Select one |
2637 | (of possibly multiple) methods of performing the call. */ | |
2638 | if (flag_optimize_sibling_calls) | |
2639 | { | |
969d70ca | 2640 | rtx insn; |
2a9a326b | 2641 | optimize_sibling_and_tail_recursive_calls (); |
9d9e5c09 | 2642 | |
5204d665 JH |
2643 | /* Recompute the CFG as sibling optimization clobbers it randomly. */ |
2644 | free_bb_for_insn (); | |
2645 | find_exception_handler_labels (); | |
2646 | rebuild_jump_labels (insns); | |
2647 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2648 | ||
969d70ca JH |
2649 | /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION |
2650 | notes before simplifying cfg and we must do lowering after sibcall | |
2651 | that unhides parts of RTL chain and cleans up the CFG. | |
d92b4486 | 2652 | |
969d70ca JH |
2653 | Until sibcall is replaced by tree-level optimizer, lets just |
2654 | sweep away the NOTE_INSN_PREDICTION notes that leaked out. */ | |
2655 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) | |
2656 | if (GET_CODE (insn) == NOTE | |
2657 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION) | |
2658 | delete_insn (insn); | |
9d9e5c09 | 2659 | } |
ba4f7968 JH |
2660 | close_dump_file (DFI_sibling, print_rtl, get_insns ()); |
2661 | timevar_pop (TV_JUMP); | |
2a9a326b | 2662 | |
ba4f7968 | 2663 | scope_to_insns_initialize (); |
52a11cbf | 2664 | /* Complete generation of exception handling code. */ |
52a11cbf RH |
2665 | if (doing_eh (0)) |
2666 | { | |
2667 | timevar_push (TV_JUMP); | |
2668 | open_dump_file (DFI_eh, decl); | |
2669 | ||
2670 | finish_eh_generation (); | |
2671 | ||
2672 | close_dump_file (DFI_eh, print_rtl, get_insns ()); | |
2673 | timevar_pop (TV_JUMP); | |
2674 | } | |
2675 | ||
1eefb6c1 RH |
2676 | /* Delay emitting hard_reg_initial_value sets until after EH landing pad |
2677 | generation, which might create new sets. */ | |
2678 | emit_initial_value_sets (); | |
2679 | ||
4291d9c8 RS |
2680 | #ifdef FINALIZE_PIC |
2681 | /* If we are doing position-independent code generation, now | |
2682 | is the time to output special prologues and epilogues. | |
2683 | We do not want to do this earlier, because it just clutters | |
2684 | up inline functions with meaningless insns. */ | |
2685 | if (flag_pic) | |
2686 | FINALIZE_PIC; | |
2687 | #endif | |
2688 | ||
2689 | insns = get_insns (); | |
2690 | ||
2691 | /* Copy any shared structure that should not be shared. */ | |
d1b81779 | 2692 | unshare_all_rtl (current_function_decl, insns); |
4291d9c8 | 2693 | |
c9ec4f99 | 2694 | #ifdef SETJMP_VIA_SAVE_AREA |
95479831 DM |
2695 | /* This must be performed before virtual register instantiation. |
2696 | Please be aware the everything in the compiler that can look | |
2697 | at the RTL up to this point must understand that REG_SAVE_AREA | |
2698 | is just like a use of the REG contained inside. */ | |
c9ec4f99 DM |
2699 | if (current_function_calls_alloca) |
2700 | optimize_save_area_alloca (insns); | |
2701 | #endif | |
2702 | ||
4291d9c8 | 2703 | /* Instantiate all virtual registers. */ |
a18820c6 | 2704 | instantiate_virtual_regs (current_function_decl, insns); |
4291d9c8 | 2705 | |
61098249 | 2706 | open_dump_file (DFI_jump, decl); |
02db399d | 2707 | |
cc4e79d8 JL |
2708 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields |
2709 | are initialized and to compute whether control can drop off the end | |
2710 | of the function. */ | |
994a57cd | 2711 | |
2a9a326b AS |
2712 | timevar_push (TV_JUMP); |
2713 | /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this | |
2714 | before jump optimization switches branch directions. */ | |
d50672ef JH |
2715 | if (flag_guess_branch_prob) |
2716 | expected_value_to_br_prob (); | |
2a9a326b AS |
2717 | |
2718 | reg_scan (insns, max_reg_num (), 0); | |
0045d504 JH |
2719 | rebuild_jump_labels (insns); |
2720 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
1c4a429a | 2721 | delete_trivially_dead_insns (insns, max_reg_num ()); |
38c1593d JH |
2722 | if (rtl_dump_file) |
2723 | dump_flow_info (rtl_dump_file); | |
2ca6672b JH |
2724 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP |
2725 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
3c030e88 | 2726 | |
1c4a429a JH |
2727 | if (optimize) |
2728 | { | |
2729 | free_bb_for_insn (); | |
2730 | copy_loop_headers (insns); | |
2731 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2732 | } | |
0045d504 | 2733 | purge_line_number_notes (insns); |
2a9a326b AS |
2734 | |
2735 | timevar_pop (TV_JUMP); | |
38c1593d | 2736 | close_dump_file (DFI_jump, print_rtl, insns); |
673b5311 | 2737 | |
32235b30 | 2738 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
951af26e | 2739 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
a18820c6 | 2740 | { |
a18820c6 RH |
2741 | goto exit_rest_of_compilation; |
2742 | } | |
2743 | ||
0826f1d8 JL |
2744 | /* Long term, this should probably move before the jump optimizer too, |
2745 | but I didn't want to disturb the rtl_dump_and_exit and related | |
2746 | stuff at this time. */ | |
2747 | if (optimize > 0 && flag_ssa) | |
2748 | { | |
2749 | /* Convert to SSA form. */ | |
2750 | ||
2751 | timevar_push (TV_TO_SSA); | |
2752 | open_dump_file (DFI_ssa, decl); | |
2753 | ||
0068fd96 | 2754 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
0826f1d8 JL |
2755 | convert_to_ssa (); |
2756 | ||
2757 | close_dump_file (DFI_ssa, print_rtl_with_bb, insns); | |
2758 | timevar_pop (TV_TO_SSA); | |
2759 | ||
0b47e4c1 JL |
2760 | /* Perform sparse conditional constant propagation, if requested. */ |
2761 | if (flag_ssa_ccp) | |
2762 | { | |
2763 | timevar_push (TV_SSA_CCP); | |
2764 | open_dump_file (DFI_ssa_ccp, decl); | |
2765 | ||
2766 | ssa_const_prop (); | |
2767 | ||
2768 | close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ()); | |
2769 | timevar_pop (TV_SSA_CCP); | |
2770 | } | |
2771 | ||
2772 | /* It would be useful to cleanup the CFG at this point, but block | |
2773 | merging and possibly other transformations might leave a PHI | |
2774 | node in the middle of a basic block, which is a strict no-no. */ | |
2775 | ||
0826f1d8 JL |
2776 | /* The SSA implementation uses basic block numbers in its phi |
2777 | nodes. Thus, changing the control-flow graph or the basic | |
2778 | blocks, e.g., calling find_basic_blocks () or cleanup_cfg (), | |
2779 | may cause problems. */ | |
2780 | ||
2781 | if (flag_ssa_dce) | |
2782 | { | |
2d76cb1a | 2783 | /* Remove dead code. */ |
0826f1d8 JL |
2784 | |
2785 | timevar_push (TV_SSA_DCE); | |
2786 | open_dump_file (DFI_ssa_dce, decl); | |
2787 | ||
2788 | insns = get_insns (); | |
9cabb1d8 | 2789 | ssa_eliminate_dead_code (); |
0826f1d8 JL |
2790 | |
2791 | close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns); | |
2792 | timevar_pop (TV_SSA_DCE); | |
2793 | } | |
2794 | ||
2795 | /* Convert from SSA form. */ | |
2796 | ||
2797 | timevar_push (TV_FROM_SSA); | |
2798 | open_dump_file (DFI_ussa, decl); | |
2799 | ||
2800 | convert_from_ssa (); | |
2801 | /* New registers have been created. Rescan their usage. */ | |
2802 | reg_scan (insns, max_reg_num (), 1); | |
0826f1d8 JL |
2803 | |
2804 | close_dump_file (DFI_ussa, print_rtl_with_bb, insns); | |
2805 | timevar_pop (TV_FROM_SSA); | |
2806 | ||
2807 | ggc_collect (); | |
2808 | } | |
2809 | ||
2a9a326b | 2810 | timevar_push (TV_JUMP); |
038c7976 | 2811 | cleanup_cfg (optimize ? CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP: 0); |
9ec6d7ab | 2812 | |
2181005d RS |
2813 | /* Try to identify useless null pointer tests and delete them. */ |
2814 | if (flag_delete_null_pointer_checks) | |
2a9a326b | 2815 | { |
38c1593d | 2816 | open_dump_file (DFI_null, decl); |
38c1593d JH |
2817 | if (rtl_dump_file) |
2818 | dump_flow_info (rtl_dump_file); | |
9ec6d7ab | 2819 | |
99a15921 JL |
2820 | if (delete_null_pointer_checks (insns)) |
2821 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
38c1593d | 2822 | |
38c1593d | 2823 | close_dump_file (DFI_null, print_rtl_with_bb, insns); |
2a9a326b AS |
2824 | } |
2825 | ||
2826 | /* Jump optimization, and the removal of NULL pointer checks, may | |
2827 | have reduced the number of instructions substantially. CSE, and | |
2828 | future passes, allocate arrays whose dimensions involve the | |
2829 | maximum instruction UID, so if we can reduce the maximum UID | |
2830 | we'll save big on memory. */ | |
2831 | renumber_insns (rtl_dump_file); | |
2832 | timevar_pop (TV_JUMP); | |
a18820c6 | 2833 | |
38c1593d | 2834 | close_dump_file (DFI_jump, print_rtl_with_bb, insns); |
dfdb644f | 2835 | |
1f8f4a0b | 2836 | ggc_collect (); |
a3770a81 | 2837 | |
4291d9c8 RS |
2838 | /* Perform common subexpression elimination. |
2839 | Nonzero value from `cse_main' means that jumps were simplified | |
2840 | and some code may now be unreachable, so do | |
2841 | jump optimization again. */ | |
2842 | ||
4291d9c8 RS |
2843 | if (optimize > 0) |
2844 | { | |
61098249 | 2845 | open_dump_file (DFI_cse, decl); |
38c1593d JH |
2846 | if (rtl_dump_file) |
2847 | dump_flow_info (rtl_dump_file); | |
2a9a326b | 2848 | timevar_push (TV_CSE); |
032713aa | 2849 | |
2a9a326b | 2850 | reg_scan (insns, max_reg_num (), 1); |
4291d9c8 | 2851 | |
2a9a326b | 2852 | tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); |
38c1593d JH |
2853 | if (tem) |
2854 | rebuild_jump_labels (insns); | |
2855 | purge_all_dead_edges (0); | |
a18820c6 | 2856 | |
2ca6672b JH |
2857 | delete_trivially_dead_insns (insns, max_reg_num ()); |
2858 | ||
48aba75b RK |
2859 | /* If we are not running more CSE passes, then we are no longer |
2860 | expecting CSE to be run. But always rerun it in a cheap mode. */ | |
2861 | cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse; | |
c5c76735 | 2862 | |
534bfae4 | 2863 | if (tem || optimize > 1) |
38c1593d | 2864 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
dfdb644f | 2865 | /* Try to identify useless null pointer tests and delete them. */ |
99a15921 | 2866 | if (flag_delete_null_pointer_checks) |
2a9a326b AS |
2867 | { |
2868 | timevar_push (TV_JUMP); | |
2a9a326b | 2869 | |
006a94b0 JL |
2870 | if (delete_null_pointer_checks (insns)) |
2871 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
2a9a326b AS |
2872 | timevar_pop (TV_JUMP); |
2873 | } | |
4291d9c8 | 2874 | |
673b5311 MM |
2875 | /* The second pass of jump optimization is likely to have |
2876 | removed a bunch more instructions. */ | |
2877 | renumber_insns (rtl_dump_file); | |
735a0e33 | 2878 | |
2a9a326b | 2879 | timevar_pop (TV_CSE); |
38c1593d | 2880 | close_dump_file (DFI_cse, print_rtl_with_bb, insns); |
032713aa | 2881 | } |
4291d9c8 | 2882 | |
61098249 RH |
2883 | open_dump_file (DFI_addressof, decl); |
2884 | ||
e9a25f70 | 2885 | purge_addressof (insns); |
38c1593d JH |
2886 | if (optimize) |
2887 | purge_all_dead_edges (0); | |
e9a25f70 JL |
2888 | reg_scan (insns, max_reg_num (), 1); |
2889 | ||
61098249 | 2890 | close_dump_file (DFI_addressof, print_rtl, insns); |
735a0e33 | 2891 | |
1f8f4a0b | 2892 | ggc_collect (); |
a3770a81 | 2893 | |
7506f491 DE |
2894 | /* Perform global cse. */ |
2895 | ||
2896 | if (optimize > 0 && flag_gcse) | |
2897 | { | |
791f5e8d | 2898 | int save_csb, save_cfj; |
48aba75b RK |
2899 | int tem2 = 0; |
2900 | ||
2a9a326b | 2901 | timevar_push (TV_GCSE); |
61098249 | 2902 | open_dump_file (DFI_gcse, decl); |
735a0e33 | 2903 | |
2a9a326b | 2904 | tem = gcse_main (insns, rtl_dump_file); |
b90e45ae | 2905 | rebuild_jump_labels (insns); |
2ca6672b | 2906 | delete_trivially_dead_insns (insns, max_reg_num ()); |
e78d9500 | 2907 | |
791f5e8d BS |
2908 | save_csb = flag_cse_skip_blocks; |
2909 | save_cfj = flag_cse_follow_jumps; | |
2910 | flag_cse_skip_blocks = flag_cse_follow_jumps = 0; | |
2911 | ||
48aba75b RK |
2912 | /* If -fexpensive-optimizations, re-run CSE to clean up things done |
2913 | by gcse. */ | |
2914 | if (flag_expensive_optimizations) | |
2915 | { | |
2916 | timevar_push (TV_CSE); | |
2917 | reg_scan (insns, max_reg_num (), 1); | |
2918 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
38c1593d | 2919 | purge_all_dead_edges (0); |
2ca6672b | 2920 | delete_trivially_dead_insns (insns, max_reg_num ()); |
48aba75b RK |
2921 | timevar_pop (TV_CSE); |
2922 | cse_not_expected = !flag_rerun_cse_after_loop; | |
2923 | } | |
5262d6b6 | 2924 | |
48aba75b RK |
2925 | /* If gcse or cse altered any jumps, rerun jump optimizations to clean |
2926 | things up. Then possibly re-run CSE again. */ | |
2927 | while (tem || tem2) | |
e78d9500 | 2928 | { |
48aba75b | 2929 | tem = tem2 = 0; |
2a9a326b | 2930 | timevar_push (TV_JUMP); |
0045d504 | 2931 | rebuild_jump_labels (insns); |
0068fd96 | 2932 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2a9a326b | 2933 | timevar_pop (TV_JUMP); |
48aba75b RK |
2934 | |
2935 | if (flag_expensive_optimizations) | |
2936 | { | |
2937 | timevar_push (TV_CSE); | |
2938 | reg_scan (insns, max_reg_num (), 1); | |
2939 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
38c1593d | 2940 | purge_all_dead_edges (0); |
2ca6672b | 2941 | delete_trivially_dead_insns (insns, max_reg_num ()); |
48aba75b RK |
2942 | timevar_pop (TV_CSE); |
2943 | } | |
854a97f0 | 2944 | } |
7506f491 | 2945 | |
38c1593d | 2946 | close_dump_file (DFI_gcse, print_rtl_with_bb, insns); |
2a9a326b | 2947 | timevar_pop (TV_GCSE); |
a3770a81 | 2948 | |
1f8f4a0b | 2949 | ggc_collect (); |
791f5e8d BS |
2950 | flag_cse_skip_blocks = save_csb; |
2951 | flag_cse_follow_jumps = save_cfj; | |
38c1593d JH |
2952 | #ifdef ENABLE_CHECKING |
2953 | verify_flow_info (); | |
2954 | #endif | |
a01da83b | 2955 | } |
a18820c6 | 2956 | |
34ee7f82 | 2957 | /* Instantiate any remaining CONSTANT_P_RTX nodes. */ |
07d9b20d | 2958 | if (optimize > 0 && flag_gcse && current_function_calls_constant_p) |
41559112 | 2959 | purge_builtin_constant_p (); |
34ee7f82 | 2960 | |
4291d9c8 RS |
2961 | /* Move constant computations out of loops. */ |
2962 | ||
96327cdc | 2963 | if (optimize > 0 && flag_loop_optimize) |
4291d9c8 | 2964 | { |
5e1afb11 RH |
2965 | int do_unroll, do_prefetch; |
2966 | ||
2a9a326b | 2967 | timevar_push (TV_LOOP); |
0010687d | 2968 | delete_dead_jumptables (); |
974a7f56 | 2969 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
61098249 | 2970 | open_dump_file (DFI_loop, decl); |
38c1593d | 2971 | /* CFG is no longer maintained up-to-date. */ |
3c030e88 | 2972 | free_bb_for_insn (); |
854a97f0 | 2973 | |
b17d5d7c ZD |
2974 | if (flag_unroll_loops) |
2975 | do_unroll = 0; /* Having two unrollers is useless. */ | |
2976 | else | |
2977 | do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL; | |
5e1afb11 | 2978 | do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0; |
2a9a326b AS |
2979 | if (flag_rerun_loop_opt) |
2980 | { | |
01f62f01 JH |
2981 | cleanup_barriers (); |
2982 | ||
2a9a326b | 2983 | /* We only want to perform unrolling once. */ |
5e1afb11 RH |
2984 | loop_optimize (insns, rtl_dump_file, do_unroll); |
2985 | do_unroll = 0; | |
a18820c6 | 2986 | |
2a9a326b AS |
2987 | /* The first call to loop_optimize makes some instructions |
2988 | trivially dead. We delete those instructions now in the | |
2989 | hope that doing so will make the heuristics in loop work | |
2990 | better and possibly speed up compilation. */ | |
3dec4024 | 2991 | delete_trivially_dead_insns (insns, max_reg_num ()); |
c6a26dc4 | 2992 | |
2a9a326b | 2993 | /* The regscan pass is currently necessary as the alias |
c6a26dc4 | 2994 | analysis code depends on this information. */ |
2a9a326b AS |
2995 | reg_scan (insns, max_reg_num (), 1); |
2996 | } | |
01f62f01 | 2997 | cleanup_barriers (); |
5e1afb11 | 2998 | loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch); |
735a0e33 | 2999 | |
38c1593d | 3000 | /* Loop can create trivially dead instructions. */ |
3dec4024 | 3001 | delete_trivially_dead_insns (insns, max_reg_num ()); |
61098249 | 3002 | close_dump_file (DFI_loop, print_rtl, insns); |
2a9a326b | 3003 | timevar_pop (TV_LOOP); |
495333a6 | 3004 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
a3770a81 | 3005 | |
1f8f4a0b | 3006 | ggc_collect (); |
4291d9c8 RS |
3007 | } |
3008 | ||
a0134312 RS |
3009 | /* Perform jump bypassing and control flow optimizations. */ |
3010 | if (optimize > 0 && flag_gcse) | |
3011 | { | |
3012 | timevar_push (TV_BYPASS); | |
3013 | open_dump_file (DFI_bypass, decl); | |
3014 | ||
3015 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3016 | tem = bypass_jumps (rtl_dump_file); | |
3017 | ||
3018 | if (tem) | |
3019 | { | |
3020 | rebuild_jump_labels (insns); | |
3021 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3022 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3023 | } | |
3024 | ||
3025 | close_dump_file (DFI_bypass, print_rtl_with_bb, insns); | |
3026 | timevar_pop (TV_BYPASS); | |
3027 | ||
3028 | ggc_collect (); | |
3029 | ||
3030 | #ifdef ENABLE_CHECKING | |
3031 | verify_flow_info (); | |
3032 | #endif | |
3033 | } | |
3034 | ||
38c1593d JH |
3035 | /* Do control and data flow analysis; wrote some of the results to |
3036 | the dump file. */ | |
3037 | ||
3038 | timevar_push (TV_FLOW); | |
3039 | open_dump_file (DFI_cfg, decl); | |
38c1593d JH |
3040 | if (rtl_dump_file) |
3041 | dump_flow_info (rtl_dump_file); | |
3042 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | |
3043 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
3044 | ||
3045 | /* It may make more sense to mark constant functions after dead code is | |
14b493d6 | 3046 | eliminated by life_analysis, but we need to do it early, as -fprofile-arcs |
38c1593d JH |
3047 | may insert code making function non-constant, but we still must consider |
3048 | it as constant, otherwise -fbranch-probabilities will not read data back. | |
3049 | ||
14b493d6 | 3050 | life_analysis rarely eliminates modification of external memory. |
38c1593d | 3051 | */ |
1540f9eb JH |
3052 | if (optimize) |
3053 | mark_constant_function (); | |
38c1593d JH |
3054 | |
3055 | close_dump_file (DFI_cfg, print_rtl_with_bb, insns); | |
3056 | ||
3057 | /* Do branch profiling and static profile estimation passes. */ | |
b7c9bf28 | 3058 | if (optimize > 0 || cfun->arc_profile || flag_branch_probabilities) |
38c1593d JH |
3059 | { |
3060 | struct loops loops; | |
3061 | ||
3062 | timevar_push (TV_BRANCH_PROB); | |
3063 | open_dump_file (DFI_bp, decl); | |
b7c9bf28 | 3064 | if (cfun->arc_profile || flag_branch_probabilities) |
38c1593d JH |
3065 | branch_prob (); |
3066 | ||
3067 | /* Discover and record the loop depth at the head of each basic | |
3068 | block. The loop infrastructure does the real job for us. */ | |
3069 | flow_loops_find (&loops, LOOP_TREE); | |
3070 | ||
7e51e626 JH |
3071 | if (rtl_dump_file) |
3072 | flow_loops_dump (&loops, rtl_dump_file, NULL, 0); | |
3073 | ||
38c1593d JH |
3074 | /* Estimate using heuristics if no profiling info is available. */ |
3075 | if (flag_guess_branch_prob) | |
3076 | estimate_probability (&loops); | |
3077 | ||
38c1593d JH |
3078 | flow_loops_free (&loops); |
3079 | close_dump_file (DFI_bp, print_rtl_with_bb, insns); | |
3080 | timevar_pop (TV_BRANCH_PROB); | |
3081 | } | |
1c4a429a | 3082 | if (optimize > 0) |
0fb53e68 | 3083 | { |
0fb53e68 | 3084 | open_dump_file (DFI_ce1, decl); |
fc8dfa20 JH |
3085 | if (flag_if_conversion) |
3086 | { | |
3087 | timevar_push (TV_IFCVT); | |
3088 | if (rtl_dump_file) | |
3089 | dump_flow_info (rtl_dump_file); | |
3090 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3091 | reg_scan (insns, max_reg_num (), 0); | |
3092 | if_convert (0); | |
3093 | timevar_pop (TV_IFCVT); | |
3094 | } | |
3095 | timevar_push (TV_JUMP); | |
0fb53e68 JH |
3096 | cleanup_cfg (CLEANUP_EXPENSIVE); |
3097 | reg_scan (insns, max_reg_num (), 0); | |
fc8dfa20 | 3098 | timevar_pop (TV_JUMP); |
0fb53e68 | 3099 | close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ()); |
0fb53e68 | 3100 | } |
5c856b23 JH |
3101 | if (flag_tracer) |
3102 | { | |
3103 | timevar_push (TV_TRACER); | |
3104 | open_dump_file (DFI_tracer, decl); | |
3105 | if (rtl_dump_file) | |
3106 | dump_flow_info (rtl_dump_file); | |
5c856b23 JH |
3107 | tracer (); |
3108 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
fc8dfa20 | 3109 | reg_scan (insns, max_reg_num (), 0); |
5c856b23 JH |
3110 | close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ()); |
3111 | timevar_pop (TV_TRACER); | |
5c856b23 | 3112 | } |
38c1593d | 3113 | |
617b465c ZD |
3114 | /* Perform loop optimalizations. It might be better to do them a bit |
3115 | sooner, but we want the profile feedback to work more efficiently. */ | |
3116 | if (optimize > 0 | |
b17d5d7c ZD |
3117 | && (flag_unswitch_loops |
3118 | || flag_peel_loops | |
3119 | || flag_unroll_loops)) | |
617b465c ZD |
3120 | { |
3121 | struct loops *loops; | |
3122 | timevar_push (TV_LOOP); | |
3123 | open_dump_file (DFI_loop2, decl); | |
3124 | if (rtl_dump_file) | |
3125 | dump_flow_info (rtl_dump_file); | |
3126 | ||
3127 | loops = loop_optimizer_init (rtl_dump_file); | |
3128 | ||
3129 | if (loops) | |
3130 | { | |
3131 | /* The optimalizations: */ | |
3132 | if (flag_unswitch_loops) | |
3133 | unswitch_loops (loops); | |
3134 | ||
b17d5d7c ZD |
3135 | if (flag_peel_loops || flag_unroll_loops) |
3136 | unroll_and_peel_loops (loops, | |
3137 | (flag_peel_loops ? UAP_PEEL : 0) | | |
3138 | (flag_unroll_loops ? UAP_UNROLL : 0) | | |
3139 | (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0)); | |
3140 | ||
617b465c ZD |
3141 | loop_optimizer_finalize (loops, rtl_dump_file); |
3142 | } | |
3143 | ||
3144 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3145 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3146 | reg_scan (insns, max_reg_num (), 0); | |
3147 | if (rtl_dump_file) | |
3148 | dump_flow_info (rtl_dump_file); | |
3149 | close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ()); | |
3150 | timevar_pop (TV_LOOP); | |
3151 | ggc_collect (); | |
3152 | } | |
3153 | ||
fc8dfa20 | 3154 | if (flag_rerun_cse_after_loop) |
c2f006ec | 3155 | { |
2a9a326b | 3156 | timevar_push (TV_CSE2); |
61098249 | 3157 | open_dump_file (DFI_cse2, decl); |
38c1593d JH |
3158 | if (rtl_dump_file) |
3159 | dump_flow_info (rtl_dump_file); | |
fc8dfa20 JH |
3160 | /* CFG is no longer maintained up-to-date. */ |
3161 | tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file); | |
3162 | purge_all_dead_edges (0); | |
3163 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
735a0e33 | 3164 | |
fc8dfa20 | 3165 | if (tem) |
032713aa | 3166 | { |
2a9a326b | 3167 | timevar_push (TV_JUMP); |
fc8dfa20 | 3168 | rebuild_jump_labels (insns); |
46fac664 | 3169 | cleanup_cfg (CLEANUP_EXPENSIVE); |
fc8dfa20 | 3170 | timevar_pop (TV_JUMP); |
032713aa | 3171 | } |
fc8dfa20 | 3172 | reg_scan (insns, max_reg_num (), 0); |
38c1593d | 3173 | close_dump_file (DFI_cse2, print_rtl_with_bb, insns); |
1f8f4a0b | 3174 | ggc_collect (); |
fc8dfa20 | 3175 | timevar_pop (TV_CSE2); |
032713aa | 3176 | } |
735a0e33 | 3177 | |
9ec6d7ab RH |
3178 | cse_not_expected = 1; |
3179 | ||
2ca6672b | 3180 | open_dump_file (DFI_life, decl); |
4291d9c8 RS |
3181 | regclass_init (); |
3182 | ||
b313a0fe | 3183 | check_function_return_warnings (); |
51891abe | 3184 | |
38c1593d JH |
3185 | #ifdef ENABLE_CHECKING |
3186 | verify_flow_info (); | |
3187 | #endif | |
2a9a326b | 3188 | life_analysis (insns, rtl_dump_file, PROP_FINAL); |
38c1593d | 3189 | if (optimize) |
1e3881c2 | 3190 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_UPDATE_LIFE |
fe477d8b | 3191 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); |
2a9a326b | 3192 | timevar_pop (TV_FLOW); |
5ece9746 | 3193 | |
7b40bc6b RH |
3194 | no_new_pseudos = 1; |
3195 | ||
d29c259b RH |
3196 | if (warn_uninitialized || extra_warnings) |
3197 | { | |
3198 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
3199 | if (extra_warnings) | |
3200 | setjmp_args_warning (); | |
4291d9c8 RS |
3201 | } |
3202 | ||
0626ef8a AM |
3203 | if (optimize) |
3204 | { | |
38c1593d | 3205 | clear_bb_flags (); |
ed8d2920 | 3206 | if (!flag_new_regalloc && initialize_uninitialized_subregs ()) |
0626ef8a AM |
3207 | { |
3208 | /* Insns were inserted, so things might look a bit different. */ | |
a01da83b | 3209 | insns = get_insns (); |
38c1593d JH |
3210 | update_life_info_in_dirty_blocks (UPDATE_LIFE_GLOBAL_RM_NOTES, |
3211 | PROP_LOG_LINKS | PROP_REG_INFO | |
3212 | | PROP_DEATH_NOTES); | |
0626ef8a AM |
3213 | } |
3214 | } | |
3215 | ||
51891abe | 3216 | close_dump_file (DFI_life, print_rtl_with_bb, insns); |
735a0e33 | 3217 | |
1f8f4a0b | 3218 | ggc_collect (); |
a3770a81 | 3219 | |
4291d9c8 RS |
3220 | /* If -opt, try combining insns through substitution. */ |
3221 | ||
3222 | if (optimize > 0) | |
032713aa | 3223 | { |
44a76fc8 AG |
3224 | int rebuild_jump_labels_after_combine = 0; |
3225 | ||
2a9a326b | 3226 | timevar_push (TV_COMBINE); |
61098249 RH |
3227 | open_dump_file (DFI_combine, decl); |
3228 | ||
2a9a326b AS |
3229 | rebuild_jump_labels_after_combine |
3230 | = combine_instructions (insns, max_reg_num ()); | |
854a97f0 | 3231 | |
44a76fc8 | 3232 | /* Combining insns may have turned an indirect jump into a |
3d042e77 | 3233 | direct jump. Rebuild the JUMP_LABEL fields of jumping |
44a76fc8 AG |
3234 | instructions. */ |
3235 | if (rebuild_jump_labels_after_combine) | |
3236 | { | |
2a9a326b AS |
3237 | timevar_push (TV_JUMP); |
3238 | rebuild_jump_labels (insns); | |
3239 | timevar_pop (TV_JUMP); | |
9ec6d7ab | 3240 | |
635559ab | 3241 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); |
44a76fc8 | 3242 | } |
735a0e33 | 3243 | |
61098249 | 3244 | close_dump_file (DFI_combine, print_rtl_with_bb, insns); |
2a9a326b | 3245 | timevar_pop (TV_COMBINE); |
a3770a81 | 3246 | |
1f8f4a0b | 3247 | ggc_collect (); |
032713aa | 3248 | } |
8c660648 | 3249 | |
9ec6d7ab RH |
3250 | /* Rerun if-conversion, as combine may have simplified things enough to |
3251 | now meet sequence length restrictions. */ | |
2c4b77f3 | 3252 | if (flag_if_conversion) |
9ec6d7ab RH |
3253 | { |
3254 | timevar_push (TV_IFCVT); | |
0fb53e68 | 3255 | open_dump_file (DFI_ce2, decl); |
9ec6d7ab | 3256 | |
7b40bc6b | 3257 | no_new_pseudos = 0; |
9ec6d7ab | 3258 | if_convert (1); |
7b40bc6b | 3259 | no_new_pseudos = 1; |
9ec6d7ab | 3260 | |
0fb53e68 | 3261 | close_dump_file (DFI_ce2, print_rtl_with_bb, insns); |
9ec6d7ab RH |
3262 | timevar_pop (TV_IFCVT); |
3263 | } | |
3264 | ||
8c660648 JL |
3265 | /* Register allocation pre-pass, to reduce number of moves |
3266 | necessary for two-address machines. */ | |
1230327b | 3267 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) |
032713aa | 3268 | { |
2a9a326b | 3269 | timevar_push (TV_REGMOVE); |
61098249 | 3270 | open_dump_file (DFI_regmove, decl); |
735a0e33 | 3271 | |
2a9a326b | 3272 | regmove_optimize (insns, max_reg_num (), rtl_dump_file); |
735a0e33 | 3273 | |
38c1593d | 3274 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); |
61098249 | 3275 | close_dump_file (DFI_regmove, print_rtl_with_bb, insns); |
2a9a326b | 3276 | timevar_pop (TV_REGMOVE); |
a3770a81 | 3277 | |
1f8f4a0b | 3278 | ggc_collect (); |
032713aa | 3279 | } |
8c660648 | 3280 | |
22fb740d JH |
3281 | /* Do unconditional splitting before register allocation to allow machine |
3282 | description to add extra information not needed previously. */ | |
3283 | split_all_insns (1); | |
3284 | ||
97d36f45 | 3285 | #ifdef OPTIMIZE_MODE_SWITCHING |
b932f770 | 3286 | timevar_push (TV_MODE_SWITCH); |
97d36f45 | 3287 | |
22fb740d | 3288 | no_new_pseudos = 0; |
38c1593d | 3289 | optimize_mode_switching (NULL); |
22fb740d | 3290 | no_new_pseudos = 1; |
bd675859 | 3291 | |
b932f770 | 3292 | timevar_pop (TV_MODE_SWITCH); |
97d36f45 | 3293 | #endif |
9f09b1f2 | 3294 | |
2382b79f RS |
3295 | /* Any of the several passes since flow1 will have munged register |
3296 | lifetime data a bit. We need it to be up to date for scheduling | |
3297 | (see handling of reg_known_equiv in init_alias_analysis). */ | |
3298 | recompute_reg_usage (insns, !optimize_size); | |
3299 | ||
05b432db JH |
3300 | timevar_push (TV_SCHED); |
3301 | ||
375e2d5c | 3302 | #ifdef INSN_SCHEDULING |
97726216 RK |
3303 | |
3304 | /* Print function header into sched dump now | |
3305 | because doing the sched analysis makes some of the dump. */ | |
4291d9c8 RS |
3306 | if (optimize > 0 && flag_schedule_insns) |
3307 | { | |
61098249 | 3308 | open_dump_file (DFI_sched, decl); |
735a0e33 | 3309 | |
4291d9c8 RS |
3310 | /* Do control and data sched analysis, |
3311 | and write some of the results to dump file. */ | |
3312 | ||
2a9a326b | 3313 | schedule_insns (rtl_dump_file); |
735a0e33 | 3314 | |
61098249 | 3315 | close_dump_file (DFI_sched, print_rtl_with_bb, insns); |
4291d9c8 | 3316 | } |
375e2d5c | 3317 | #endif |
05b432db JH |
3318 | timevar_pop (TV_SCHED); |
3319 | ||
3320 | ggc_collect (); | |
4291d9c8 | 3321 | |
54ff41b7 JW |
3322 | /* Determine if the current function is a leaf before running reload |
3323 | since this can impact optimizations done by the prologue and | |
3324 | epilogue thus changing register elimination offsets. */ | |
3325 | current_function_is_leaf = leaf_function_p (); | |
3326 | ||
2a9a326b | 3327 | timevar_push (TV_LOCAL_ALLOC); |
61098249 | 3328 | open_dump_file (DFI_lreg, decl); |
246fd41f | 3329 | |
854a97f0 | 3330 | /* Allocate pseudo-regs that are used only within 1 basic block. |
3f1b9b1b JL |
3331 | |
3332 | RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the | |
3333 | jump optimizer after register allocation and reloading are finished. */ | |
4291d9c8 | 3334 | |
ed8d2920 MM |
3335 | if (flag_new_regalloc) |
3336 | { | |
3337 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3338 | reg_alloc (); | |
385b6e2d | 3339 | |
ed8d2920 MM |
3340 | timevar_pop (TV_LOCAL_ALLOC); |
3341 | if (dump_file[DFI_lreg].enabled) | |
3342 | { | |
3343 | timevar_push (TV_DUMP); | |
385b6e2d | 3344 | |
ed8d2920 MM |
3345 | close_dump_file (DFI_lreg, NULL, NULL); |
3346 | timevar_pop (TV_DUMP); | |
3347 | } | |
385b6e2d | 3348 | |
ed8d2920 MM |
3349 | /* XXX clean up the whole mess to bring live info in shape again. */ |
3350 | timevar_push (TV_GLOBAL_ALLOC); | |
3351 | open_dump_file (DFI_greg, decl); | |
2a9a326b | 3352 | |
ed8d2920 MM |
3353 | build_insn_chain (insns); |
3354 | failure = reload (insns, 0); | |
4291d9c8 | 3355 | |
ed8d2920 | 3356 | timevar_pop (TV_GLOBAL_ALLOC); |
2a9a326b | 3357 | |
ed8d2920 MM |
3358 | if (dump_file[DFI_greg].enabled) |
3359 | { | |
3360 | timevar_push (TV_DUMP); | |
735a0e33 | 3361 | |
ed8d2920 MM |
3362 | dump_global_regs (rtl_dump_file); |
3363 | ||
3364 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); | |
3365 | timevar_pop (TV_DUMP); | |
3366 | } | |
3367 | ||
3368 | if (failure) | |
3369 | goto exit_rest_of_compilation; | |
3370 | reload_completed = 1; | |
3371 | rebuild_label_notes_after_reload = 0; | |
032713aa | 3372 | } |
ed8d2920 MM |
3373 | else |
3374 | { | |
3375 | /* Allocate the reg_renumber array. */ | |
3376 | allocate_reg_info (max_regno, FALSE, TRUE); | |
4291d9c8 | 3377 | |
ed8d2920 MM |
3378 | /* And the reg_equiv_memory_loc array. */ |
3379 | reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx)); | |
a3770a81 | 3380 | |
ed8d2920 | 3381 | allocate_initial_values (reg_equiv_memory_loc); |
4291d9c8 | 3382 | |
ed8d2920 MM |
3383 | regclass (insns, max_reg_num (), rtl_dump_file); |
3384 | rebuild_label_notes_after_reload = local_alloc (); | |
4291d9c8 | 3385 | |
ed8d2920 MM |
3386 | timevar_pop (TV_LOCAL_ALLOC); |
3387 | ||
3388 | if (dump_file[DFI_lreg].enabled) | |
3389 | { | |
3390 | timevar_push (TV_DUMP); | |
2a9a326b | 3391 | |
ed8d2920 MM |
3392 | dump_flow_info (rtl_dump_file); |
3393 | dump_local_alloc (rtl_dump_file); | |
4291d9c8 | 3394 | |
ed8d2920 MM |
3395 | close_dump_file (DFI_lreg, print_rtl_with_bb, insns); |
3396 | timevar_pop (TV_DUMP); | |
3397 | } | |
8bb16620 | 3398 | |
ed8d2920 | 3399 | ggc_collect (); |
8bb16620 | 3400 | |
ed8d2920 MM |
3401 | timevar_push (TV_GLOBAL_ALLOC); |
3402 | open_dump_file (DFI_greg, decl); | |
8bb16620 | 3403 | |
ed8d2920 MM |
3404 | /* If optimizing, allocate remaining pseudo-regs. Do the reload |
3405 | pass fixing up any insns that are invalid. */ | |
3406 | ||
3407 | if (optimize) | |
3408 | failure = global_alloc (rtl_dump_file); | |
3409 | else | |
3410 | { | |
3411 | build_insn_chain (insns); | |
3412 | failure = reload (insns, 0); | |
3413 | } | |
3414 | ||
3415 | timevar_pop (TV_GLOBAL_ALLOC); | |
3416 | ||
3417 | if (dump_file[DFI_greg].enabled) | |
3418 | { | |
3419 | timevar_push (TV_DUMP); | |
3420 | ||
3421 | dump_global_regs (rtl_dump_file); | |
3422 | ||
3423 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); | |
3424 | timevar_pop (TV_DUMP); | |
3425 | } | |
3426 | ||
3427 | if (failure) | |
3428 | goto exit_rest_of_compilation; | |
3429 | } | |
ab40ad2b | 3430 | |
1f8f4a0b | 3431 | ggc_collect (); |
a3770a81 | 3432 | |
8bb16620 BS |
3433 | open_dump_file (DFI_postreload, decl); |
3434 | ||
c8ed219d RK |
3435 | /* Do a very simple CSE pass over just the hard registers. */ |
3436 | if (optimize > 0) | |
2a9a326b AS |
3437 | { |
3438 | timevar_push (TV_RELOAD_CSE_REGS); | |
3439 | reload_cse_regs (insns); | |
854a97f0 | 3440 | timevar_pop (TV_RELOAD_CSE_REGS); |
2a9a326b | 3441 | } |
c8ed219d | 3442 | |
0edaaa41 HB |
3443 | /* Register allocation and reloading may have turned an indirect jump into |
3444 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3445 | jumping instructions. */ | |
3446 | if (rebuild_label_notes_after_reload) | |
2a9a326b AS |
3447 | { |
3448 | timevar_push (TV_JUMP); | |
3449 | ||
3450 | rebuild_jump_labels (insns); | |
44d3eb5b | 3451 | purge_all_dead_edges (0); |
2a9a326b AS |
3452 | |
3453 | timevar_pop (TV_JUMP); | |
3454 | } | |
0edaaa41 | 3455 | |
8bb16620 | 3456 | close_dump_file (DFI_postreload, print_rtl_with_bb, insns); |
e881bb1b | 3457 | |
6764d250 | 3458 | /* Re-create the death notes which were deleted during reload. */ |
2a9a326b | 3459 | timevar_push (TV_FLOW2); |
61098249 | 3460 | open_dump_file (DFI_flow2, decl); |
2a9a326b | 3461 | |
6f862f2f JH |
3462 | #ifdef ENABLE_CHECKING |
3463 | verify_flow_info (); | |
3464 | #endif | |
0005550b JH |
3465 | |
3466 | /* If optimizing, then go ahead and split insns now. */ | |
10a3fdd9 | 3467 | #ifndef STACK_REGS |
0005550b | 3468 | if (optimize > 0) |
10a3fdd9 | 3469 | #endif |
0005550b JH |
3470 | split_all_insns (0); |
3471 | ||
0ecf09f9 | 3472 | cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0); |
19d3c25c RH |
3473 | |
3474 | /* On some machines, the prologue and epilogue code, or parts thereof, | |
3475 | can be represented as RTL. Doing so lets us schedule insns between | |
3476 | it and the rest of the code and also allows delayed branch | |
3477 | scheduling to operate in the epilogue. */ | |
3478 | thread_prologue_and_epilogue_insns (insns); | |
3479 | ||
6764d250 | 3480 | if (optimize) |
e881bb1b | 3481 | { |
2a9a326b | 3482 | life_analysis (insns, rtl_dump_file, PROP_FINAL); |
96327cdc JH |
3483 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE |
3484 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
1e7f0a48 | 3485 | |
5fa41e13 | 3486 | /* This is kind of a heuristic. We need to run combine_stack_adjustments |
f73ad30e JH |
3487 | even for machines with possibly nonzero RETURN_POPS_ARGS |
3488 | and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having | |
3489 | push instructions will have popping returns. */ | |
3490 | #ifndef PUSH_ROUNDING | |
3491 | if (!ACCUMULATE_OUTGOING_ARGS) | |
1e7f0a48 | 3492 | #endif |
2a9a326b | 3493 | combine_stack_adjustments (); |
1e7f0a48 | 3494 | |
1f8f4a0b | 3495 | ggc_collect (); |
e881bb1b | 3496 | } |
6764d250 | 3497 | |
56744d1a JL |
3498 | flow2_completed = 1; |
3499 | ||
61098249 | 3500 | close_dump_file (DFI_flow2, print_rtl_with_bb, insns); |
2a9a326b | 3501 | timevar_pop (TV_FLOW2); |
e881bb1b | 3502 | |
ede7cd44 RH |
3503 | #ifdef HAVE_peephole2 |
3504 | if (optimize > 0 && flag_peephole2) | |
3505 | { | |
2a9a326b | 3506 | timevar_push (TV_PEEPHOLE2); |
2a9a326b | 3507 | open_dump_file (DFI_peephole2, decl); |
9ec6d7ab | 3508 | |
2a9a326b | 3509 | peephole2_optimize (rtl_dump_file); |
ede7cd44 | 3510 | |
61098249 | 3511 | close_dump_file (DFI_peephole2, print_rtl_with_bb, insns); |
2a9a326b | 3512 | timevar_pop (TV_PEEPHOLE2); |
ede7cd44 RH |
3513 | } |
3514 | #endif | |
3515 | ||
06990986 | 3516 | if (optimize > 0 && (flag_rename_registers || flag_cprop_registers)) |
5fa41e13 SC |
3517 | { |
3518 | timevar_push (TV_RENAME_REGISTERS); | |
3519 | open_dump_file (DFI_rnreg, decl); | |
3520 | ||
8582c27b | 3521 | if (flag_rename_registers) |
9cabb1d8 | 3522 | regrename_optimize (); |
8582c27b | 3523 | if (flag_cprop_registers) |
9cabb1d8 | 3524 | copyprop_hardreg_forward (); |
5fa41e13 SC |
3525 | |
3526 | close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); | |
3527 | timevar_pop (TV_RENAME_REGISTERS); | |
854a97f0 | 3528 | } |
5fa41e13 | 3529 | |
b9422b69 JH |
3530 | if (optimize > 0) |
3531 | { | |
3532 | timevar_push (TV_REORDER_BLOCKS); | |
3533 | open_dump_file (DFI_bbro, decl); | |
3534 | ||
3535 | /* Last attempt to optimize CFG, as scheduling, peepholing and insn | |
3536 | splitting possibly introduced more crossjumping opportunities. */ | |
3537 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE | |
3538 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
3539 | ||
3540 | if (flag_sched2_use_traces && flag_schedule_insns_after_reload) | |
3541 | tracer (); | |
3542 | if (flag_reorder_blocks) | |
3543 | reorder_basic_blocks (); | |
3544 | if (flag_reorder_blocks | |
3545 | || (flag_sched2_use_traces && flag_schedule_insns_after_reload)) | |
3546 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); | |
3547 | ||
3548 | close_dump_file (DFI_bbro, print_rtl_with_bb, insns); | |
3549 | timevar_pop (TV_REORDER_BLOCKS); | |
3550 | } | |
3551 | ||
fa1a0d02 JH |
3552 | if (flag_if_conversion2) |
3553 | { | |
3554 | timevar_push (TV_IFCVT2); | |
3555 | open_dump_file (DFI_ce3, decl); | |
3556 | ||
3557 | if_convert (1); | |
3558 | ||
3559 | close_dump_file (DFI_ce3, print_rtl_with_bb, insns); | |
3560 | timevar_pop (TV_IFCVT2); | |
3561 | } | |
fa1a0d02 | 3562 | |
375e2d5c | 3563 | #ifdef INSN_SCHEDULING |
4291d9c8 RS |
3564 | if (optimize > 0 && flag_schedule_insns_after_reload) |
3565 | { | |
2a9a326b | 3566 | timevar_push (TV_SCHED2); |
61098249 | 3567 | open_dump_file (DFI_sched2, decl); |
4291d9c8 RS |
3568 | |
3569 | /* Do control and data sched analysis again, | |
3570 | and write some more of the results to dump file. */ | |
3571 | ||
05b432db JH |
3572 | split_all_insns (1); |
3573 | ||
b9422b69 JH |
3574 | if (flag_sched2_use_superblocks || flag_sched2_use_traces) |
3575 | { | |
3576 | schedule_ebbs (rtl_dump_file); | |
3577 | /* No liveness updating code yet, but it should be easy to do. | |
3578 | reg-stack recompute the liveness when needed for now. */ | |
3579 | count_or_remove_death_notes (NULL, 1); | |
3580 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3581 | } | |
3582 | else | |
3583 | schedule_insns (rtl_dump_file); | |
4291d9c8 | 3584 | |
61098249 | 3585 | close_dump_file (DFI_sched2, print_rtl_with_bb, insns); |
2a9a326b | 3586 | timevar_pop (TV_SCHED2); |
a3770a81 | 3587 | |
1f8f4a0b | 3588 | ggc_collect (); |
4291d9c8 | 3589 | } |
375e2d5c | 3590 | #endif |
4291d9c8 RS |
3591 | |
3592 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3593 | current_function_uses_only_leaf_regs |
3594 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3595 | #endif |
3596 | ||
1e5fd094 JH |
3597 | #ifdef STACK_REGS |
3598 | timevar_push (TV_REG_STACK); | |
3599 | open_dump_file (DFI_stack, decl); | |
3600 | ||
b9422b69 JH |
3601 | if (reg_to_stack (insns, rtl_dump_file) && optimize) |
3602 | { | |
3603 | if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK | |
3604 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)) | |
3605 | && flag_reorder_blocks) | |
3606 | { | |
3607 | reorder_basic_blocks (); | |
b3de7382 | 3608 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK); |
b9422b69 JH |
3609 | } |
3610 | } | |
1e5fd094 | 3611 | |
3c030e88 | 3612 | close_dump_file (DFI_stack, print_rtl_with_bb, insns); |
1e5fd094 JH |
3613 | timevar_pop (TV_REG_STACK); |
3614 | ||
3615 | ggc_collect (); | |
3616 | #endif | |
247a370b | 3617 | compute_alignments (); |
11bdd2ae | 3618 | |
f5143c46 | 3619 | /* CFG is no longer maintained up-to-date. */ |
3c030e88 JH |
3620 | free_bb_for_insn (); |
3621 | ||
2c65021a RK |
3622 | /* If a machine dependent reorganization is needed, call it. */ |
3623 | #ifdef MACHINE_DEPENDENT_REORG | |
eced69b5 | 3624 | timevar_push (TV_MACH_DEP); |
61098249 | 3625 | open_dump_file (DFI_mach, decl); |
88924698 | 3626 | |
61098249 | 3627 | MACHINE_DEPENDENT_REORG (insns); |
032713aa | 3628 | |
232a132f | 3629 | close_dump_file (DFI_mach, print_rtl, insns); |
eced69b5 | 3630 | timevar_pop (TV_MACH_DEP); |
a3770a81 | 3631 | |
1f8f4a0b | 3632 | ggc_collect (); |
2c65021a RK |
3633 | #endif |
3634 | ||
0045d504 | 3635 | purge_line_number_notes (insns); |
01f62f01 | 3636 | cleanup_barriers (); |
0045d504 | 3637 | |
4291d9c8 | 3638 | /* If a scheduling pass for delayed branches is to be done, |
0f41302f | 3639 | call the scheduling code. */ |
4291d9c8 RS |
3640 | |
3641 | #ifdef DELAY_SLOTS | |
3642 | if (optimize > 0 && flag_delayed_branch) | |
3643 | { | |
2a9a326b | 3644 | timevar_push (TV_DBR_SCHED); |
61098249 | 3645 | open_dump_file (DFI_dbr, decl); |
bbd2180d | 3646 | |
2a9a326b | 3647 | dbr_schedule (insns, rtl_dump_file); |
735a0e33 | 3648 | |
232a132f | 3649 | close_dump_file (DFI_dbr, print_rtl, insns); |
2a9a326b | 3650 | timevar_pop (TV_DBR_SCHED); |
a3770a81 | 3651 | |
1f8f4a0b | 3652 | ggc_collect (); |
61098249 | 3653 | } |
4291d9c8 RS |
3654 | #endif |
3655 | ||
1e5fd094 | 3656 | #if defined (HAVE_ATTR_length) && !defined (STACK_REGS) |
d7e5d7fe | 3657 | timevar_push (TV_SHORTEN_BRANCH); |
6f862f2f | 3658 | split_all_insns_noflow (); |
2a9a326b | 3659 | timevar_pop (TV_SHORTEN_BRANCH); |
932f0847 | 3660 | #endif |
52a11cbf RH |
3661 | |
3662 | convert_to_eh_region_ranges (); | |
932f0847 JH |
3663 | |
3664 | /* Shorten branches. */ | |
3665 | timevar_push (TV_SHORTEN_BRANCH); | |
3666 | shorten_branches (get_insns ()); | |
3667 | timevar_pop (TV_SHORTEN_BRANCH); | |
4291d9c8 | 3668 | |
b6128b8c | 3669 | set_nothrow_function_flags (); |
12a22e76 JM |
3670 | if (current_function_nothrow) |
3671 | /* Now we know that this can't throw; set the flag for the benefit | |
3672 | of other functions later in this translation unit. */ | |
3673 | TREE_NOTHROW (current_function_decl) = 1; | |
fb13d4d0 | 3674 | |
4291d9c8 RS |
3675 | /* Now turn the rtl into assembler code. */ |
3676 | ||
2a9a326b AS |
3677 | timevar_push (TV_FINAL); |
3678 | { | |
3679 | rtx x; | |
3680 | const char *fnname; | |
4291d9c8 | 3681 | |
d171a5fb RK |
3682 | /* Get the function's name, as described by its RTL. This may be |
3683 | different from the DECL_NAME name used in the source file. */ | |
4291d9c8 | 3684 | |
2a9a326b AS |
3685 | x = DECL_RTL (decl); |
3686 | if (GET_CODE (x) != MEM) | |
3687 | abort (); | |
3688 | x = XEXP (x, 0); | |
3689 | if (GET_CODE (x) != SYMBOL_REF) | |
3690 | abort (); | |
3691 | fnname = XSTR (x, 0); | |
3692 | ||
3693 | assemble_start_function (decl, fnname); | |
3694 | final_start_function (insns, asm_out_file, optimize); | |
3695 | final (insns, asm_out_file, optimize, 0); | |
e2a12aca | 3696 | final_end_function (); |
2a1ee410 RH |
3697 | |
3698 | #ifdef IA64_UNWIND_INFO | |
3699 | /* ??? The IA-64 ".handlerdata" directive must be issued before | |
3700 | the ".endp" directive that closes the procedure descriptor. */ | |
3701 | output_function_exception_table (); | |
3702 | #endif | |
3703 | ||
2a9a326b | 3704 | assemble_end_function (decl, fnname); |
52a11cbf | 3705 | |
2a1ee410 RH |
3706 | #ifndef IA64_UNWIND_INFO |
3707 | /* Otherwise, it feels unclean to switch sections in the middle. */ | |
52a11cbf | 3708 | output_function_exception_table (); |
2a1ee410 | 3709 | #endif |
52a11cbf | 3710 | |
2a9a326b AS |
3711 | if (! quiet_flag) |
3712 | fflush (asm_out_file); | |
9ddca353 | 3713 | |
854a97f0 | 3714 | /* Release all memory allocated by flow. */ |
2a9a326b | 3715 | free_basic_block_vars (0); |
e881bb1b | 3716 | |
854a97f0 | 3717 | /* Release all memory held by regsets now. */ |
2a9a326b AS |
3718 | regset_release_memory (); |
3719 | } | |
3720 | timevar_pop (TV_FINAL); | |
4291d9c8 | 3721 | |
1f8f4a0b | 3722 | ggc_collect (); |
a3770a81 | 3723 | |
854a97f0 | 3724 | /* Write DBX symbols if requested. */ |
4291d9c8 RS |
3725 | |
3726 | /* Note that for those inline functions where we don't initially | |
3727 | know for certain that we will be generating an out-of-line copy, | |
3728 | the first invocation of this routine (rest_of_compilation) will | |
3729 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
2bb74773 DJ |
3730 | Later on, wrapup_global_declarations will (indirectly) call |
3731 | rest_of_compilation again for those inline functions that need | |
3732 | to have out-of-line copies generated. During that call, we | |
3733 | *will* be routed past here. */ | |
4291d9c8 | 3734 | |
2a9a326b | 3735 | timevar_push (TV_SYMOUT); |
2b85879e | 3736 | (*debug_hooks->function_decl) (decl); |
2a9a326b | 3737 | timevar_pop (TV_SYMOUT); |
9a666dda | 3738 | |
4291d9c8 RS |
3739 | exit_rest_of_compilation: |
3740 | ||
f246a305 RS |
3741 | /* In case the function was not output, |
3742 | don't leave any temporary anonymous types | |
3743 | queued up for sdb output. */ | |
3744 | #ifdef SDB_DEBUGGING_INFO | |
3745 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3746 | sdbout_types (NULL_TREE); |
f246a305 RS |
3747 | #endif |
3748 | ||
4291d9c8 | 3749 | reload_completed = 0; |
56744d1a | 3750 | flow2_completed = 0; |
f1db3576 | 3751 | no_new_pseudos = 0; |
4291d9c8 | 3752 | |
2a9a326b | 3753 | timevar_push (TV_FINAL); |
4291d9c8 | 3754 | |
2a9a326b AS |
3755 | /* Clear out the insn_length contents now that they are no |
3756 | longer valid. */ | |
3757 | init_insn_lengths (); | |
3758 | ||
2a9a326b AS |
3759 | /* Show no temporary slots allocated. */ |
3760 | init_temp_slots (); | |
adcd38c9 | 3761 | |
2a9a326b | 3762 | free_basic_block_vars (0); |
5652450c | 3763 | free_bb_for_insn (); |
fa51b01b | 3764 | |
2a9a326b | 3765 | timevar_pop (TV_FINAL); |
adcd38c9 | 3766 | |
c8d86b9a JW |
3767 | /* Make sure volatile mem refs aren't considered valid operands for |
3768 | arithmetic insns. We must call this here if this is a nested inline | |
3769 | function, since the above code leaves us in the init_recog state | |
3770 | (from final.c), and the function context push/pop code does not | |
3771 | save/restore volatile_ok. | |
3772 | ||
3773 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3774 | anymore if we do it here? */ | |
3775 | ||
3776 | init_recog_no_volatile (); | |
3777 | ||
21cd906e | 3778 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3779 | free_after_parsing (cfun); |
fa51b01b | 3780 | if (! DECL_DEFER_OUTPUT (decl)) |
ae6f2a1c ZW |
3781 | { |
3782 | free_after_compilation (cfun); | |
3783 | ||
3784 | /* Clear integrate.c's pointer to the cfun structure we just | |
3785 | destroyed. */ | |
3786 | DECL_SAVED_INSNS (decl) = 0; | |
3787 | } | |
01d939e8 | 3788 | cfun = 0; |
a3770a81 | 3789 | |
1f8f4a0b | 3790 | ggc_collect (); |
a3770a81 | 3791 | |
2a9a326b | 3792 | timevar_pop (TV_REST_OF_COMPILATION); |
4291d9c8 RS |
3793 | } |
3794 | \f | |
b8468bc7 NC |
3795 | static void |
3796 | display_help () | |
3797 | { | |
854a97f0 KH |
3798 | int undoc; |
3799 | unsigned long i; | |
3800 | const char *lang; | |
3801 | ||
5e4adfba PT |
3802 | printf (_(" -ffixed-<register> Mark <register> as being unavailable to the compiler\n")); |
3803 | printf (_(" -fcall-used-<register> Mark <register> as being corrupted by function calls\n")); | |
3804 | printf (_(" -fcall-saved-<register> Mark <register> as being preserved across functions\n")); | |
3805 | printf (_(" -finline-limit=<number> Limits the size of inlined functions to <number>\n")); | |
3806 | printf (_(" -fmessage-length=<number> Limits diagnostics messages lengths to <number> characters per line. 0 suppresses line-wrapping\n")); | |
e6513023 | 3807 | printf (_(" -fdiagnostics-show-location=[once | every-line] Indicates how often source location information should be emitted, as prefix, at the beginning of diagnostics when line-wrapping\n")); |
3d78f2e9 | 3808 | printf (_(" -ftls-model=[global-dynamic | local-dynamic | initial-exec | local-exec] Indicates the default thread-local storage code generation model\n")); |
b8468bc7 | 3809 | |
b6a1cbae | 3810 | for (i = ARRAY_SIZE (f_options); i--;) |
b8468bc7 | 3811 | { |
854a97f0 KH |
3812 | const char *description = f_options[i].description; |
3813 | ||
9cabb1d8 | 3814 | if (description != NULL && *description != 0) |
b8468bc7 | 3815 | printf (" -f%-21s %s\n", |
a6371940 | 3816 | f_options[i].string, _(description)); |
b8468bc7 | 3817 | } |
854a97f0 | 3818 | |
1737c953 JM |
3819 | printf (_(" -O[number] Set optimization level to [number]\n")); |
3820 | printf (_(" -Os Optimize for space rather than speed\n")); | |
639bc36c | 3821 | for (i = LAST_PARAM; i--;) |
1c4c47db JO |
3822 | { |
3823 | const char *description = compiler_params[i].help; | |
9cabb1d8 | 3824 | const int length = 21 - strlen (compiler_params[i].option); |
1c4c47db | 3825 | |
9cabb1d8 | 3826 | if (description != NULL && *description != 0) |
1c4c47db JO |
3827 | printf (" --param %s=<value>%.*s%s\n", |
3828 | compiler_params[i].option, | |
3829 | length > 0 ? length : 1, " ", | |
a6371940 | 3830 | _(description)); |
1c4c47db | 3831 | } |
89abf8d1 | 3832 | printf (_(" -pedantic Issue warnings needed by strict compliance to ISO C\n")); |
5e4adfba PT |
3833 | printf (_(" -pedantic-errors Like -pedantic except that errors are produced\n")); |
3834 | printf (_(" -w Suppress warnings\n")); | |
854a97f0 | 3835 | |
b6a1cbae | 3836 | for (i = ARRAY_SIZE (W_options); i--;) |
b8468bc7 | 3837 | { |
854a97f0 KH |
3838 | const char *description = W_options[i].description; |
3839 | ||
9cabb1d8 | 3840 | if (description != NULL && *description != 0) |
b8468bc7 | 3841 | printf (" -W%-21s %s\n", |
a6371940 | 3842 | W_options[i].string, _(description)); |
b8468bc7 | 3843 | } |
854a97f0 | 3844 | |
5e4adfba | 3845 | printf (_(" -Wunused Enable unused warnings\n")); |
5e4adfba PT |
3846 | printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n")); |
3847 | printf (_(" -p Enable function profiling\n")); | |
5e4adfba PT |
3848 | printf (_(" -o <file> Place output into <file> \n")); |
3849 | printf (_("\ | |
3850 | -G <number> Put global and static data smaller than <number>\n\ | |
3851 | bytes into a special section (on some targets)\n")); | |
854a97f0 | 3852 | |
b6a1cbae | 3853 | for (i = ARRAY_SIZE (debug_args); i--;) |
b8468bc7 NC |
3854 | { |
3855 | if (debug_args[i].description != NULL) | |
854a97f0 | 3856 | printf (" -g%-21s %s\n", |
a6371940 | 3857 | debug_args[i].arg, _(debug_args[i].description)); |
b8468bc7 | 3858 | } |
854a97f0 | 3859 | |
c47af4b7 | 3860 | printf (_(" -aux-info <file> Emit declaration info into <file>\n")); |
5e4adfba PT |
3861 | printf (_(" -quiet Do not display functions compiled or elapsed time\n")); |
3862 | printf (_(" -version Display the compiler's version\n")); | |
3863 | printf (_(" -d[letters] Enable dumps from specific passes of the compiler\n")); | |
3864 | printf (_(" -dumpbase <file> Base name to be used for dumps from specific passes\n")); | |
7b5efe21 | 3865 | #if defined INSN_SCHEDULING |
5e4adfba | 3866 | printf (_(" -fsched-verbose=<number> Set the verbosity level of the scheduler\n")); |
b8468bc7 | 3867 | #endif |
5e4adfba | 3868 | printf (_(" --help Display this information\n")); |
b8468bc7 NC |
3869 | |
3870 | undoc = 0; | |
3871 | lang = "language"; | |
854a97f0 | 3872 | |
b8468bc7 NC |
3873 | /* Display descriptions of language specific options. |
3874 | If there is no description, note that there is an undocumented option. | |
3875 | If the description is empty, do not display anything. (This allows | |
3876 | options to be deliberately undocumented, for whatever reason). | |
3877 | If the option string is missing, then this is a marker, indicating | |
630962bf | 3878 | that the description string is in fact the name of a language, whose |
b8468bc7 | 3879 | language specific options are to follow. */ |
854a97f0 | 3880 | |
b6a1cbae | 3881 | if (ARRAY_SIZE (documented_lang_options) > 1) |
b8468bc7 | 3882 | { |
5e4adfba | 3883 | printf (_("\nLanguage specific options:\n")); |
b8468bc7 | 3884 | |
b6a1cbae | 3885 | for (i = 0; i < ARRAY_SIZE (documented_lang_options); i++) |
b8468bc7 | 3886 | { |
854a97f0 KH |
3887 | const char *description = documented_lang_options[i].description; |
3888 | const char *option = documented_lang_options[i].option; | |
b8468bc7 NC |
3889 | |
3890 | if (description == NULL) | |
844642e6 NC |
3891 | { |
3892 | undoc = 1; | |
3893 | ||
3894 | if (extra_warnings) | |
5e4adfba | 3895 | printf (_(" %-23.23s [undocumented]\n"), option); |
844642e6 | 3896 | } |
854a97f0 | 3897 | else if (*description == 0) |
b8468bc7 NC |
3898 | continue; |
3899 | else if (option == NULL) | |
3900 | { | |
3901 | if (undoc) | |
3902 | printf | |
5e4adfba | 3903 | (_("\nThere are undocumented %s specific options as well.\n"), |
b8468bc7 NC |
3904 | lang); |
3905 | undoc = 0; | |
854a97f0 | 3906 | |
5e4adfba | 3907 | printf (_("\n Options for %s:\n"), description); |
b8468bc7 NC |
3908 | |
3909 | lang = description; | |
3910 | } | |
3911 | else | |
a6371940 | 3912 | printf (" %-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
3913 | } |
3914 | } | |
3915 | ||
3916 | if (undoc) | |
854a97f0 KH |
3917 | printf (_("\nThere are undocumented %s specific options as well.\n"), |
3918 | lang); | |
b8468bc7 | 3919 | |
10501d8f CC |
3920 | display_target_options (); |
3921 | } | |
3922 | ||
8f54374e | 3923 | static void |
10501d8f CC |
3924 | display_target_options () |
3925 | { | |
a01da83b | 3926 | int undoc, i; |
76306300 NB |
3927 | static bool displayed = false; |
3928 | ||
3929 | /* Avoid double printing for --help --target-help. */ | |
3930 | if (displayed) | |
3931 | return; | |
3932 | displayed = true; | |
10501d8f | 3933 | |
b6a1cbae | 3934 | if (ARRAY_SIZE (target_switches) > 1 |
b8468bc7 | 3935 | #ifdef TARGET_OPTIONS |
b6a1cbae | 3936 | || ARRAY_SIZE (target_options) > 1 |
b8468bc7 NC |
3937 | #endif |
3938 | ) | |
3939 | { | |
3940 | int doc = 0; | |
854a97f0 | 3941 | |
b8468bc7 | 3942 | undoc = 0; |
854a97f0 | 3943 | |
5e4adfba | 3944 | printf (_("\nTarget specific options:\n")); |
b8468bc7 | 3945 | |
b6a1cbae | 3946 | for (i = ARRAY_SIZE (target_switches); i--;) |
b8468bc7 | 3947 | { |
854a97f0 KH |
3948 | const char *option = target_switches[i].name; |
3949 | const char *description = target_switches[i].description; | |
b8468bc7 | 3950 | |
854a97f0 | 3951 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3952 | continue; |
3953 | else if (description == NULL) | |
844642e6 NC |
3954 | { |
3955 | undoc = 1; | |
854a97f0 | 3956 | |
844642e6 | 3957 | if (extra_warnings) |
10501d8f | 3958 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 3959 | } |
9cabb1d8 | 3960 | else if (*description != 0) |
a6371940 | 3961 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 | 3962 | } |
854a97f0 KH |
3963 | |
3964 | #ifdef TARGET_OPTIONS | |
b6a1cbae | 3965 | for (i = ARRAY_SIZE (target_options); i--;) |
b8468bc7 | 3966 | { |
854a97f0 KH |
3967 | const char *option = target_options[i].prefix; |
3968 | const char *description = target_options[i].description; | |
b8468bc7 | 3969 | |
854a97f0 | 3970 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3971 | continue; |
3972 | else if (description == NULL) | |
844642e6 NC |
3973 | { |
3974 | undoc = 1; | |
854a97f0 | 3975 | |
844642e6 | 3976 | if (extra_warnings) |
10501d8f | 3977 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 3978 | } |
9cabb1d8 | 3979 | else if (*description != 0) |
a6371940 | 3980 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
3981 | } |
3982 | #endif | |
3983 | if (undoc) | |
ff59bfe6 JM |
3984 | { |
3985 | if (doc) | |
5e4adfba | 3986 | printf (_("\nThere are undocumented target specific options as well.\n")); |
ff59bfe6 | 3987 | else |
5e4adfba | 3988 | printf (_(" They exist, but they are not documented.\n")); |
ff59bfe6 | 3989 | } |
b8468bc7 NC |
3990 | } |
3991 | } | |
39dd8003 | 3992 | \f |
f63d1bf7 | 3993 | /* Parse a -d... command line switch. */ |
39dd8003 NC |
3994 | |
3995 | static void | |
3996 | decode_d_option (arg) | |
854a97f0 | 3997 | const char *arg; |
39dd8003 | 3998 | { |
61098249 RH |
3999 | int i, c, matched; |
4000 | ||
4001 | while (*arg) | |
4002 | switch (c = *arg++) | |
39dd8003 NC |
4003 | { |
4004 | case 'a': | |
dbbbbf3b | 4005 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 | 4006 | dump_file[i].enabled = 1; |
39dd8003 NC |
4007 | break; |
4008 | case 'A': | |
4009 | flag_debug_asm = 1; | |
4010 | break; | |
39dd8003 NC |
4011 | case 'p': |
4012 | flag_print_asm_name = 1; | |
4013 | break; | |
c349e40b | 4014 | case 'P': |
9cabb1d8 KH |
4015 | flag_dump_rtl_in_asm = 1; |
4016 | flag_print_asm_name = 1; | |
4017 | break; | |
39dd8003 NC |
4018 | case 'v': |
4019 | graph_dump_format = vcg; | |
4020 | break; | |
39dd8003 NC |
4021 | case 'x': |
4022 | rtl_dump_and_exit = 1; | |
4023 | break; | |
4024 | case 'y': | |
ff45c01e | 4025 | set_yydebug = 1; |
39dd8003 | 4026 | break; |
39dd8003 NC |
4027 | case 'D': /* These are handled by the preprocessor. */ |
4028 | case 'I': | |
4029 | break; | |
886e0865 GK |
4030 | case 'H': |
4031 | setup_core_dumping(); | |
4032 | break; | |
61098249 | 4033 | |
39dd8003 | 4034 | default: |
61098249 | 4035 | matched = 0; |
dbbbbf3b | 4036 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 RH |
4037 | if (c == dump_file[i].debug_switch) |
4038 | { | |
4039 | dump_file[i].enabled = 1; | |
4040 | matched = 1; | |
4041 | } | |
4042 | ||
4043 | if (! matched) | |
4044 | warning ("unrecognized gcc debugging option: %c", c); | |
39dd8003 NC |
4045 | break; |
4046 | } | |
4047 | } | |
b8468bc7 | 4048 | |
f63d1bf7 | 4049 | /* Parse a -f... command line switch. ARG is the value after the -f. |
39dd8003 NC |
4050 | It is safe to access 'ARG - 2' to generate the full switch name. |
4051 | Return the number of strings consumed. */ | |
b8468bc7 NC |
4052 | |
4053 | static int | |
39dd8003 | 4054 | decode_f_option (arg) |
854a97f0 | 4055 | const char *arg; |
b8468bc7 | 4056 | { |
39dd8003 | 4057 | int j; |
6f5ef761 | 4058 | const char *option_value = NULL; |
39dd8003 NC |
4059 | |
4060 | /* Search for the option in the table of binary f options. */ | |
b6a1cbae | 4061 | for (j = ARRAY_SIZE (f_options); j--;) |
39dd8003 NC |
4062 | { |
4063 | if (!strcmp (arg, f_options[j].string)) | |
4064 | { | |
4065 | *f_options[j].variable = f_options[j].on_value; | |
4066 | return 1; | |
4067 | } | |
854a97f0 | 4068 | |
39dd8003 NC |
4069 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' |
4070 | && ! strcmp (arg + 3, f_options[j].string)) | |
4071 | { | |
4072 | *f_options[j].variable = ! f_options[j].on_value; | |
4073 | return 1; | |
4074 | } | |
4075 | } | |
b8468bc7 | 4076 | |
de6c5979 | 4077 | if (!strcmp (arg, "fast-math")) |
748d29c1 | 4078 | set_fast_math_flags (1); |
de6c5979 | 4079 | else if (!strcmp (arg, "no-fast-math")) |
748d29c1 | 4080 | set_fast_math_flags (0); |
de6c5979 BL |
4081 | else if ((option_value = skip_leading_substring (arg, "inline-limit-")) |
4082 | || (option_value = skip_leading_substring (arg, "inline-limit="))) | |
c6d9a88c | 4083 | { |
5262d6b6 | 4084 | int val = |
c6d9a88c MM |
4085 | read_integral_parameter (option_value, arg - 2, |
4086 | MAX_INLINE_INSNS); | |
4087 | set_param_value ("max-inline-insns", val); | |
4088 | } | |
3d78f2e9 RH |
4089 | else if ((option_value = skip_leading_substring (arg, "tls-model="))) |
4090 | { | |
4091 | if (strcmp (option_value, "global-dynamic") == 0) | |
4092 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
4093 | else if (strcmp (option_value, "local-dynamic") == 0) | |
4094 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
4095 | else if (strcmp (option_value, "initial-exec") == 0) | |
4096 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
4097 | else if (strcmp (option_value, "local-exec") == 0) | |
4098 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
4099 | else | |
4100 | warning ("`%s': unknown tls-model option", arg - 2); | |
4101 | } | |
39dd8003 | 4102 | #ifdef INSN_SCHEDULING |
6f5ef761 GDR |
4103 | else if ((option_value = skip_leading_substring (arg, "sched-verbose="))) |
4104 | fix_sched_param ("verbose", option_value); | |
4105 | #endif | |
4106 | else if ((option_value = skip_leading_substring (arg, "fixed-"))) | |
4107 | fix_register (option_value, 1, 1); | |
4108 | else if ((option_value = skip_leading_substring (arg, "call-used-"))) | |
4109 | fix_register (option_value, 0, 1); | |
4110 | else if ((option_value = skip_leading_substring (arg, "call-saved-"))) | |
4111 | fix_register (option_value, 0, 0); | |
4112 | else if ((option_value = skip_leading_substring (arg, "align-loops="))) | |
4113 | align_loops = read_integral_parameter (option_value, arg - 2, align_loops); | |
4114 | else if ((option_value = skip_leading_substring (arg, "align-functions="))) | |
4559fd9e | 4115 | align_functions |
6f5ef761 GDR |
4116 | = read_integral_parameter (option_value, arg - 2, align_functions); |
4117 | else if ((option_value = skip_leading_substring (arg, "align-jumps="))) | |
4118 | align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps); | |
4119 | else if ((option_value = skip_leading_substring (arg, "align-labels="))) | |
4120 | align_labels | |
4121 | = read_integral_parameter (option_value, arg - 2, align_labels); | |
4122 | else if ((option_value | |
854a97f0 | 4123 | = skip_leading_substring (arg, "stack-limit-register="))) |
6f5ef761 GDR |
4124 | { |
4125 | int reg = decode_reg_name (option_value); | |
a157febd | 4126 | if (reg < 0) |
6f5ef761 | 4127 | error ("unrecognized register name `%s'", option_value); |
a157febd GK |
4128 | else |
4129 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
4130 | } | |
6f5ef761 | 4131 | else if ((option_value |
854a97f0 | 4132 | = skip_leading_substring (arg, "stack-limit-symbol="))) |
a157febd | 4133 | { |
520a57c8 | 4134 | const char *nm; |
1f8f4a0b | 4135 | nm = ggc_strdup (option_value); |
a157febd GK |
4136 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm); |
4137 | } | |
764dbbf2 | 4138 | else if ((option_value |
d92b4486 | 4139 | = skip_leading_substring (arg, "message-length="))) |
9596ddd6 GDR |
4140 | output_set_maximum_length |
4141 | (&global_dc->buffer, read_integral_parameter | |
4142 | (option_value, arg - 2, diagnostic_line_cutoff (global_dc))); | |
764dbbf2 | 4143 | else if ((option_value |
854a97f0 | 4144 | = skip_leading_substring (arg, "diagnostics-show-location="))) |
764dbbf2 GDR |
4145 | { |
4146 | if (!strcmp (option_value, "once")) | |
9cabb1d8 | 4147 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; |
764dbbf2 | 4148 | else if (!strcmp (option_value, "every-line")) |
9cabb1d8 KH |
4149 | diagnostic_prefixing_rule (global_dc) |
4150 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
764dbbf2 | 4151 | else |
1f978f5f | 4152 | error ("unrecognized option `%s'", arg - 2); |
764dbbf2 | 4153 | } |
a157febd GK |
4154 | else if (!strcmp (arg, "no-stack-limit")) |
4155 | stack_limit_rtx = NULL_RTX; | |
39dd8003 | 4156 | else if (!strcmp (arg, "preprocessed")) |
05713b80 | 4157 | /* Recognize this switch but do nothing. This prevents warnings |
4dbba876 | 4158 | about an unrecognized switch if cpplib has not been linked in. */ |
39dd8003 | 4159 | ; |
1f50b029 | 4160 | else |
39dd8003 NC |
4161 | return 0; |
4162 | ||
4163 | return 1; | |
4164 | } | |
4165 | ||
f63d1bf7 | 4166 | /* Parse a -W... command line switch. ARG is the value after the -W. |
39dd8003 NC |
4167 | It is safe to access 'ARG - 2' to generate the full switch name. |
4168 | Return the number of strings consumed. */ | |
4559fd9e | 4169 | |
39dd8003 NC |
4170 | static int |
4171 | decode_W_option (arg) | |
854a97f0 | 4172 | const char *arg; |
39dd8003 | 4173 | { |
6f5ef761 | 4174 | const char *option_value = NULL; |
39dd8003 | 4175 | int j; |
854a97f0 | 4176 | |
39dd8003 NC |
4177 | /* Search for the option in the table of binary W options. */ |
4178 | ||
b6a1cbae | 4179 | for (j = ARRAY_SIZE (W_options); j--;) |
39dd8003 NC |
4180 | { |
4181 | if (!strcmp (arg, W_options[j].string)) | |
4182 | { | |
4183 | *W_options[j].variable = W_options[j].on_value; | |
4184 | return 1; | |
4185 | } | |
4186 | ||
4187 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4188 | && ! strcmp (arg + 3, W_options[j].string)) | |
4189 | { | |
4190 | *W_options[j].variable = ! W_options[j].on_value; | |
4191 | return 1; | |
4192 | } | |
4193 | } | |
4194 | ||
6f5ef761 | 4195 | if ((option_value = skip_leading_substring (arg, "id-clash-"))) |
84b77836 | 4196 | warning ("-Wid-clash-LEN is no longer supported"); |
6f5ef761 | 4197 | else if ((option_value = skip_leading_substring (arg, "larger-than-"))) |
39dd8003 | 4198 | { |
6f5ef761 | 4199 | larger_than_size = read_integral_parameter (option_value, arg - 2, -1); |
4559fd9e | 4200 | |
e9770d51 | 4201 | warn_larger_than = larger_than_size != -1; |
39dd8003 | 4202 | } |
078721e1 AC |
4203 | else if (!strcmp (arg, "unused")) |
4204 | { | |
4205 | set_Wunused (1); | |
4206 | } | |
4207 | else if (!strcmp (arg, "no-unused")) | |
4208 | { | |
4209 | set_Wunused (0); | |
4210 | } | |
65ca2d60 PE |
4211 | else if (!strcmp (arg, "extra")) |
4212 | { | |
4213 | /* We save the value of warn_uninitialized, since if they put | |
4214 | -Wuninitialized on the command line, we need to generate a | |
4215 | warning about not using it without also specifying -O. */ | |
4216 | if (warn_uninitialized != 1) | |
4217 | warn_uninitialized = 2; | |
4218 | } | |
39dd8003 | 4219 | else |
b8468bc7 | 4220 | return 0; |
39dd8003 NC |
4221 | |
4222 | return 1; | |
4223 | } | |
4224 | ||
f63d1bf7 | 4225 | /* Parse a -g... command line switch. ARG is the value after the -g. |
39dd8003 NC |
4226 | It is safe to access 'ARG - 2' to generate the full switch name. |
4227 | Return the number of strings consumed. */ | |
14a774a9 | 4228 | |
39dd8003 NC |
4229 | static int |
4230 | decode_g_option (arg) | |
854a97f0 | 4231 | const char *arg; |
39dd8003 | 4232 | { |
9cabb1d8 | 4233 | static unsigned level = 0; |
39dd8003 NC |
4234 | /* A lot of code assumes write_symbols == NO_DEBUG if the |
4235 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4236 | of what debugging type has been selected). This records the | |
4237 | selected type. It is an error to specify more than one | |
4238 | debugging type. */ | |
4239 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
272d0bee | 4240 | /* Nonzero if debugging format has been explicitly set. |
39dd8003 NC |
4241 | -g and -ggdb don't explicitly set the debugging format so |
4242 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4243 | static int type_explicitly_set_p = 0; | |
4244 | /* Indexed by enum debug_info_type. */ | |
27c38fbe | 4245 | static const char *const debug_type_names[] = |
39dd8003 | 4246 | { |
7a0c8d71 | 4247 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms" |
39dd8003 | 4248 | }; |
854a97f0 | 4249 | |
39dd8003 NC |
4250 | /* The maximum admissible debug level value. */ |
4251 | static const unsigned max_debug_level = 3; | |
854a97f0 | 4252 | |
39dd8003 NC |
4253 | /* Look up ARG in the table. */ |
4254 | for (da = debug_args; da->arg; da++) | |
4255 | { | |
4256 | const int da_len = strlen (da->arg); | |
4257 | ||
4258 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
4259 | { | |
4260 | enum debug_info_type type = da->debug_type; | |
854a97f0 KH |
4261 | const char *p = arg + da_len; |
4262 | ||
0df6c2c7 | 4263 | if (*p && ! ISDIGIT (*p)) |
39dd8003 | 4264 | continue; |
854a97f0 | 4265 | |
39dd8003 NC |
4266 | /* A debug flag without a level defaults to level 2. |
4267 | Note we do not want to call read_integral_parameter | |
854a97f0 | 4268 | for that case since it will call atoi which |
39dd8003 | 4269 | will return zero. |
854a97f0 KH |
4270 | |
4271 | ??? We may want to generalize the interface to | |
39dd8003 NC |
4272 | read_integral_parameter to better handle this case |
4273 | if this case shows up often. */ | |
4274 | if (*p) | |
4275 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
4276 | else | |
84a5b4f8 | 4277 | level = (level == 0) ? 2 : level; |
854a97f0 | 4278 | |
39dd8003 NC |
4279 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) |
4280 | { | |
4281 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
4282 | level, level); | |
4283 | if (level == 2) | |
4284 | error ("use -gdwarf-2 for DWARF v2"); | |
4285 | } | |
854a97f0 | 4286 | |
39dd8003 NC |
4287 | if (level > max_debug_level) |
4288 | { | |
4289 | warning ("\ | |
4290 | ignoring option `%s' due to invalid debug level specification", | |
4291 | arg - 2); | |
4292 | level = debug_info_level; | |
4293 | } | |
4294 | ||
4295 | if (type == NO_DEBUG) | |
4296 | { | |
4297 | type = PREFERRED_DEBUGGING_TYPE; | |
854a97f0 | 4298 | |
39dd8003 NC |
4299 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) |
4300 | { | |
3fc602a0 | 4301 | #ifdef DWARF2_DEBUGGING_INFO |
39dd8003 NC |
4302 | type = DWARF2_DEBUG; |
4303 | #else | |
4304 | #ifdef DBX_DEBUGGING_INFO | |
4305 | type = DBX_DEBUG; | |
4306 | #endif | |
4307 | #endif | |
4308 | } | |
4309 | } | |
854a97f0 | 4310 | |
39dd8003 | 4311 | if (type == NO_DEBUG) |
14a774a9 | 4312 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4313 | |
4314 | /* Does it conflict with an already selected type? */ | |
4315 | if (type_explicitly_set_p | |
854a97f0 | 4316 | /* -g/-ggdb don't conflict with anything. */ |
39dd8003 NC |
4317 | && da->debug_type != NO_DEBUG |
4318 | && type != selected_debug_type) | |
4319 | warning ("`%s' ignored, conflicts with `-g%s'", | |
4320 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
4321 | else | |
4322 | { | |
4323 | /* If the format has already been set, -g/-ggdb | |
4324 | only change the debug level. */ | |
4325 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
854a97f0 KH |
4326 | /* Don't change debugging type. */ |
4327 | ; | |
39dd8003 NC |
4328 | else |
4329 | { | |
4330 | selected_debug_type = type; | |
4331 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
4332 | } | |
854a97f0 | 4333 | |
39dd8003 NC |
4334 | write_symbols = (level == 0 |
4335 | ? NO_DEBUG | |
4336 | : selected_debug_type); | |
4337 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
4338 | debug_info_level = (enum debug_info_level) level; | |
4339 | } | |
854a97f0 | 4340 | |
39dd8003 NC |
4341 | break; |
4342 | } | |
4343 | } | |
854a97f0 | 4344 | |
39dd8003 | 4345 | if (! da->arg) |
04324727 | 4346 | return 0; |
39dd8003 NC |
4347 | |
4348 | return 1; | |
4349 | } | |
4350 | ||
4351 | /* Decode the first argument in the argv as a language-independent option. | |
319ea138 | 4352 | Return the number of strings consumed. */ |
854a97f0 | 4353 | |
13eb1f7f | 4354 | static unsigned int |
319ea138 | 4355 | independent_decode_option (argc, argv) |
39dd8003 | 4356 | int argc; |
13eb1f7f | 4357 | char **argv; |
39dd8003 | 4358 | { |
13eb1f7f | 4359 | char *arg = argv[0]; |
854a97f0 | 4360 | |
39dd8003 | 4361 | if (arg[0] != '-' || arg[1] == 0) |
b8468bc7 | 4362 | { |
39dd8003 NC |
4363 | if (arg[0] == '+') |
4364 | return 0; | |
854a97f0 | 4365 | |
39dd8003 NC |
4366 | filename = arg; |
4367 | ||
4368 | return 1; | |
b8468bc7 | 4369 | } |
39dd8003 | 4370 | |
854a97f0 KH |
4371 | arg++; |
4372 | ||
39dd8003 NC |
4373 | if (!strcmp (arg, "-help")) |
4374 | { | |
4375 | display_help (); | |
cb773845 | 4376 | exit_after_options = 1; |
39dd8003 NC |
4377 | } |
4378 | ||
10501d8f CC |
4379 | if (!strcmp (arg, "-target-help")) |
4380 | { | |
4381 | display_target_options (); | |
cb773845 | 4382 | exit_after_options = 1; |
10501d8f CC |
4383 | } |
4384 | ||
f4cdc368 ZW |
4385 | if (!strcmp (arg, "-version")) |
4386 | { | |
4387 | print_version (stderr, ""); | |
cb773845 | 4388 | exit_after_options = 1; |
f4cdc368 ZW |
4389 | } |
4390 | ||
c6d9a88c MM |
4391 | /* Handle '--param <name>=<value>'. */ |
4392 | if (strcmp (arg, "-param") == 0) | |
4393 | { | |
4394 | char *equal; | |
4395 | ||
4396 | if (argc == 1) | |
4397 | { | |
4398 | error ("-param option missing argument"); | |
4399 | return 1; | |
4400 | } | |
4401 | ||
7521b913 | 4402 | /* Get the '<name>=<value>' parameter. */ |
c6d9a88c MM |
4403 | arg = argv[1]; |
4404 | /* Look for the `='. */ | |
4405 | equal = strchr (arg, '='); | |
5262d6b6 | 4406 | if (!equal) |
c6d9a88c | 4407 | error ("invalid --param option: %s", arg); |
5262d6b6 | 4408 | else |
c6d9a88c MM |
4409 | { |
4410 | int val; | |
4411 | ||
4412 | /* Zero out the `=' sign so that we get two separate strings. */ | |
4413 | *equal = '\0'; | |
4414 | /* Figure out what value is specified. */ | |
4415 | val = read_integral_parameter (equal + 1, NULL, INVALID_PARAM_VAL); | |
4416 | if (val != INVALID_PARAM_VAL) | |
4417 | set_param_value (arg, val); | |
4418 | else | |
4419 | error ("invalid parameter value `%s'", equal + 1); | |
4420 | } | |
4421 | ||
4422 | return 2; | |
4423 | } | |
5262d6b6 | 4424 | |
854a97f0 KH |
4425 | if (*arg == 'Y') |
4426 | arg++; | |
4427 | ||
13eb1f7f | 4428 | switch (*arg) |
b8468bc7 | 4429 | { |
39dd8003 NC |
4430 | default: |
4431 | return 0; | |
854a97f0 | 4432 | |
39dd8003 NC |
4433 | case 'O': |
4434 | /* Already been treated in main (). Do nothing. */ | |
4435 | break; | |
854a97f0 | 4436 | |
39dd8003 NC |
4437 | case 'm': |
4438 | set_target_switch (arg + 1); | |
4439 | break; | |
4440 | ||
4441 | case 'f': | |
4442 | return decode_f_option (arg + 1); | |
854a97f0 | 4443 | |
39dd8003 | 4444 | case 'g': |
319ea138 | 4445 | return decode_g_option (arg + 1); |
39dd8003 NC |
4446 | |
4447 | case 'd': | |
4448 | if (!strcmp (arg, "dumpbase")) | |
4449 | { | |
4450 | if (argc == 1) | |
4451 | return 0; | |
854a97f0 | 4452 | |
ea67fe71 NS |
4453 | if (argv[1][0]) |
4454 | dump_base_name = argv[1]; | |
26182e15 | 4455 | |
39dd8003 NC |
4456 | return 2; |
4457 | } | |
4458 | else | |
4459 | decode_d_option (arg + 1); | |
4460 | break; | |
4461 | ||
4462 | case 'p': | |
4463 | if (!strcmp (arg, "pedantic")) | |
4464 | pedantic = 1; | |
4465 | else if (!strcmp (arg, "pedantic-errors")) | |
4466 | flag_pedantic_errors = pedantic = 1; | |
4467 | else if (arg[1] == 0) | |
4468 | profile_flag = 1; | |
4469 | else | |
4470 | return 0; | |
4471 | break; | |
4472 | ||
4473 | case 'q': | |
4474 | if (!strcmp (arg, "quiet")) | |
4475 | quiet_flag = 1; | |
4476 | else | |
4477 | return 0; | |
4478 | break; | |
4479 | ||
4480 | case 'v': | |
4481 | if (!strcmp (arg, "version")) | |
4482 | version_flag = 1; | |
4483 | else | |
4484 | return 0; | |
4485 | break; | |
4486 | ||
4487 | case 'w': | |
4488 | if (arg[1] == 0) | |
4489 | inhibit_warnings = 1; | |
4490 | else | |
4491 | return 0; | |
4492 | break; | |
4493 | ||
4494 | case 'W': | |
4495 | if (arg[1] == 0) | |
4496 | { | |
4497 | extra_warnings = 1; | |
4498 | /* We save the value of warn_uninitialized, since if they put | |
4499 | -Wuninitialized on the command line, we need to generate a | |
4500 | warning about not using it without also specifying -O. */ | |
4501 | if (warn_uninitialized != 1) | |
4502 | warn_uninitialized = 2; | |
4503 | } | |
4504 | else | |
4505 | return decode_W_option (arg + 1); | |
4506 | break; | |
854a97f0 | 4507 | |
3db83e32 JJ |
4508 | case 'a': |
4509 | if (!strncmp (arg, "aux-info", 8)) | |
4510 | { | |
4511 | if (arg[8] == '\0') | |
4512 | { | |
4513 | if (argc == 1) | |
4514 | return 0; | |
4515 | ||
4516 | aux_info_file_name = argv[1]; | |
4517 | flag_gen_aux_info = 1; | |
4518 | return 2; | |
4519 | } | |
4520 | else if (arg[8] == '=') | |
4521 | { | |
4522 | aux_info_file_name = arg + 9; | |
4523 | flag_gen_aux_info = 1; | |
4524 | } | |
4525 | else | |
4526 | return 0; | |
4527 | } | |
ea67fe71 NS |
4528 | else if (!strcmp (arg, "auxbase")) |
4529 | { | |
4530 | if (argc == 1) | |
4531 | return 0; | |
4532 | ||
4533 | if (argv[1][0]) | |
4534 | aux_base_name = argv[1]; | |
26182e15 | 4535 | |
ea67fe71 NS |
4536 | return 2; |
4537 | } | |
4538 | else if (!strcmp (arg, "auxbase-strip")) | |
4539 | { | |
4540 | if (argc == 1) | |
4541 | return 0; | |
4542 | ||
4543 | if (argv[1][0]) | |
4544 | { | |
4545 | strip_off_ending (argv[1], strlen (argv[1])); | |
4546 | if (argv[1][0]) | |
4547 | aux_base_name = argv[1]; | |
4548 | } | |
26182e15 | 4549 | |
ea67fe71 NS |
4550 | return 2; |
4551 | } | |
3db83e32 JJ |
4552 | else |
4553 | return 0; | |
4554 | break; | |
4555 | ||
39dd8003 NC |
4556 | case 'o': |
4557 | if (arg[1] == 0) | |
4558 | { | |
4559 | if (argc == 1) | |
4560 | return 0; | |
854a97f0 | 4561 | |
39dd8003 NC |
4562 | asm_file_name = argv[1]; |
4563 | return 2; | |
b8468bc7 | 4564 | } |
39dd8003 NC |
4565 | return 0; |
4566 | ||
4567 | case 'G': | |
4568 | { | |
4569 | int g_switch_val; | |
4570 | int return_val; | |
854a97f0 | 4571 | |
39dd8003 NC |
4572 | if (arg[1] == 0) |
4573 | { | |
4574 | if (argc == 1) | |
4575 | return 0; | |
854a97f0 | 4576 | |
39dd8003 NC |
4577 | g_switch_val = read_integral_parameter (argv[1], 0, -1); |
4578 | return_val = 2; | |
4579 | } | |
4580 | else | |
4581 | { | |
4582 | g_switch_val = read_integral_parameter (arg + 1, 0, -1); | |
4583 | return_val = 1; | |
4584 | } | |
854a97f0 | 4585 | |
39dd8003 NC |
4586 | if (g_switch_val == -1) |
4587 | return_val = 0; | |
4588 | else | |
4589 | { | |
4590 | g_switch_set = TRUE; | |
4591 | g_switch_value = g_switch_val; | |
4592 | } | |
854a97f0 | 4593 | |
39dd8003 NC |
4594 | return return_val; |
4595 | } | |
b8468bc7 | 4596 | } |
854a97f0 | 4597 | |
b8468bc7 NC |
4598 | return 1; |
4599 | } | |
4600 | \f | |
f5e99456 NB |
4601 | /* Decode -m switches. */ |
4602 | /* Decode the switch -mNAME. */ | |
7adfcfed | 4603 | |
f5e99456 NB |
4604 | static void |
4605 | set_target_switch (name) | |
4606 | const char *name; | |
4291d9c8 | 4607 | { |
f5e99456 NB |
4608 | size_t j; |
4609 | int valid_target_option = 0; | |
4291d9c8 | 4610 | |
f5e99456 NB |
4611 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
4612 | if (!strcmp (target_switches[j].name, name)) | |
4613 | { | |
4614 | if (target_switches[j].value < 0) | |
4615 | target_flags &= ~-target_switches[j].value; | |
4616 | else | |
4617 | target_flags |= target_switches[j].value; | |
a27fb29b RS |
4618 | if (name[0] != 0) |
4619 | { | |
4620 | if (target_switches[j].value < 0) | |
4621 | target_flags_explicit |= -target_switches[j].value; | |
4622 | else | |
4623 | target_flags_explicit |= target_switches[j].value; | |
4624 | } | |
f5e99456 NB |
4625 | valid_target_option = 1; |
4626 | } | |
4291d9c8 | 4627 | |
f5e99456 NB |
4628 | #ifdef TARGET_OPTIONS |
4629 | if (!valid_target_option) | |
4630 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
4631 | { | |
4632 | int len = strlen (target_options[j].prefix); | |
4633 | if (!strncmp (target_options[j].prefix, name, len)) | |
4634 | { | |
4635 | *target_options[j].variable = name + len; | |
4636 | valid_target_option = 1; | |
4637 | } | |
4638 | } | |
4639 | #endif | |
4291d9c8 | 4640 | |
f5e99456 | 4641 | if (!valid_target_option) |
1f978f5f | 4642 | error ("invalid option `%s'", name); |
f5e99456 NB |
4643 | } |
4644 | \f | |
4645 | /* Print version information to FILE. | |
4646 | Each line begins with INDENT (for the case where FILE is the | |
4647 | assembler output file). */ | |
4648 | ||
4649 | static void | |
4650 | print_version (file, indent) | |
4651 | FILE *file; | |
4652 | const char *indent; | |
4653 | { | |
4654 | #ifndef __VERSION__ | |
4655 | #define __VERSION__ "[?]" | |
4656 | #endif | |
4657 | fnotice (file, | |
4658 | #ifdef __GNUC__ | |
4659 | "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n" | |
4660 | #else | |
4661 | "%s%s%s version %s (%s) compiled by CC.\n" | |
4662 | #endif | |
4663 | , indent, *indent != 0 ? " " : "", | |
4664 | lang_hooks.name, version_string, TARGET_NAME, | |
4665 | indent, __VERSION__); | |
7a69a172 GB |
4666 | fnotice (file, "%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n", |
4667 | indent, *indent != 0 ? " " : "", | |
4668 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
f5e99456 NB |
4669 | } |
4670 | ||
4671 | /* Print an option value and return the adjusted position in the line. | |
4672 | ??? We don't handle error returns from fprintf (disk full); presumably | |
4673 | other code will catch a disk full though. */ | |
4674 | ||
4675 | static int | |
4676 | print_single_switch (file, pos, max, indent, sep, term, type, name) | |
4677 | FILE *file; | |
4678 | int pos, max; | |
4679 | const char *indent, *sep, *term, *type, *name; | |
4680 | { | |
4681 | /* The ultrix fprintf returns 0 on success, so compute the result we want | |
4682 | here since we need it for the following test. */ | |
4683 | int len = strlen (sep) + strlen (type) + strlen (name); | |
4684 | ||
4685 | if (pos != 0 | |
4686 | && pos + len > max) | |
4687 | { | |
4688 | fprintf (file, "%s", term); | |
4689 | pos = 0; | |
4690 | } | |
4691 | if (pos == 0) | |
4692 | { | |
4693 | fprintf (file, "%s", indent); | |
4694 | pos = strlen (indent); | |
4695 | } | |
4696 | fprintf (file, "%s%s%s", sep, type, name); | |
4697 | pos += len; | |
4698 | return pos; | |
4699 | } | |
4700 | ||
4701 | /* Print active target switches to FILE. | |
4702 | POS is the current cursor position and MAX is the size of a "line". | |
4703 | Each line begins with INDENT and ends with TERM. | |
4704 | Each switch is separated from the next by SEP. */ | |
4705 | ||
4706 | static void | |
4707 | print_switch_values (file, pos, max, indent, sep, term) | |
4708 | FILE *file; | |
4709 | int pos, max; | |
4710 | const char *indent, *sep, *term; | |
4711 | { | |
4712 | size_t j; | |
4713 | char **p; | |
4714 | ||
4715 | /* Print the options as passed. */ | |
4716 | ||
4717 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, | |
4718 | _("options passed: "), ""); | |
4719 | ||
4720 | for (p = &save_argv[1]; *p != NULL; p++) | |
4721 | if (**p == '-') | |
4722 | { | |
4723 | /* Ignore these. */ | |
4724 | if (strcmp (*p, "-o") == 0) | |
4725 | { | |
4726 | if (p[1] != NULL) | |
4727 | p++; | |
4728 | continue; | |
4729 | } | |
4730 | if (strcmp (*p, "-quiet") == 0) | |
4731 | continue; | |
4732 | if (strcmp (*p, "-version") == 0) | |
4733 | continue; | |
4734 | if ((*p)[1] == 'd') | |
4735 | continue; | |
4736 | ||
4737 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
4738 | } | |
4739 | if (pos > 0) | |
4740 | fprintf (file, "%s", term); | |
4741 | ||
4742 | /* Print the -f and -m options that have been enabled. | |
4743 | We don't handle language specific options but printing argv | |
4744 | should suffice. */ | |
4745 | ||
4746 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
4747 | _("options enabled: "), ""); | |
4748 | ||
4749 | for (j = 0; j < ARRAY_SIZE (f_options); j++) | |
4750 | if (*f_options[j].variable == f_options[j].on_value) | |
4751 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4752 | "-f", f_options[j].string); | |
4753 | ||
4754 | /* Print target specific options. */ | |
4755 | ||
4756 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) | |
4757 | if (target_switches[j].name[0] != '\0' | |
4758 | && target_switches[j].value > 0 | |
4759 | && ((target_switches[j].value & target_flags) | |
4760 | == target_switches[j].value)) | |
4761 | { | |
4762 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4763 | "-m", target_switches[j].name); | |
4764 | } | |
4765 | ||
4766 | #ifdef TARGET_OPTIONS | |
4767 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
4768 | if (*target_options[j].variable != NULL) | |
4769 | { | |
4770 | char prefix[256]; | |
4771 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
4772 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4773 | prefix, *target_options[j].variable); | |
4774 | } | |
4775 | #endif | |
4776 | ||
4777 | fprintf (file, "%s", term); | |
4778 | } | |
4779 | \f | |
4780 | /* Open assembly code output file. Do this even if -fsyntax-only is | |
4781 | on, because then the driver will have provided the name of a | |
4782 | temporary file or bit bucket for us. NAME is the file specified on | |
4783 | the command line, possibly NULL. */ | |
4784 | static void | |
4785 | init_asm_output (name) | |
4786 | const char *name; | |
4787 | { | |
4788 | if (name == NULL && asm_file_name == 0) | |
4789 | asm_out_file = stdout; | |
4790 | else | |
4791 | { | |
4792 | if (asm_file_name == 0) | |
9cabb1d8 KH |
4793 | { |
4794 | int len = strlen (dump_base_name); | |
4795 | char *dumpname = (char *) xmalloc (len + 6); | |
4796 | memcpy (dumpname, dump_base_name, len + 1); | |
4797 | strip_off_ending (dumpname, len); | |
4798 | strcat (dumpname, ".s"); | |
4799 | asm_file_name = dumpname; | |
4800 | } | |
f5e99456 | 4801 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 4802 | asm_out_file = stdout; |
f5e99456 | 4803 | else |
17211ab5 | 4804 | asm_out_file = fopen (asm_file_name, "w+"); |
f5e99456 NB |
4805 | if (asm_out_file == 0) |
4806 | fatal_io_error ("can't open %s for writing", asm_file_name); | |
4807 | } | |
4808 | ||
4809 | #ifdef IO_BUFFER_SIZE | |
4810 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), | |
9cabb1d8 | 4811 | _IOFBF, IO_BUFFER_SIZE); |
f5e99456 NB |
4812 | #endif |
4813 | ||
4814 | if (!flag_syntax_only) | |
4815 | { | |
4816 | #ifdef ASM_FILE_START | |
4817 | ASM_FILE_START (asm_out_file); | |
4818 | #endif | |
4819 | ||
4820 | #ifdef ASM_COMMENT_START | |
4821 | if (flag_verbose_asm) | |
4822 | { | |
4823 | /* Print the list of options in effect. */ | |
4824 | print_version (asm_out_file, ASM_COMMENT_START); | |
4825 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
4826 | ASM_COMMENT_START, " ", "\n"); | |
4827 | /* Add a blank line here so it appears in assembler output but not | |
4828 | screen output. */ | |
4829 | fprintf (asm_out_file, "\n"); | |
4830 | } | |
4831 | #endif | |
4832 | } | |
4833 | } | |
4834 | \f | |
4835 | /* Initialization of the front end environment, before command line | |
4836 | options are parsed. Signal handlers, internationalization etc. | |
4837 | ARGV0 is main's argv[0]. */ | |
4838 | static void | |
4839 | general_init (argv0) | |
4840 | char *argv0; | |
4841 | { | |
4842 | char *p; | |
4843 | ||
4844 | p = argv0 + strlen (argv0); | |
4845 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
4846 | --p; | |
4847 | progname = p; | |
4848 | ||
4849 | xmalloc_set_program_name (progname); | |
e1a132c6 | 4850 | |
5351f1ca NB |
4851 | hex_init (); |
4852 | ||
191bf464 | 4853 | gcc_init_libintl (); |
ab87f8c8 | 4854 | |
a7023245 ZW |
4855 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
4856 | #ifdef SIGSEGV | |
4857 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 4858 | #endif |
a7023245 ZW |
4859 | #ifdef SIGILL |
4860 | signal (SIGILL, crash_signal); | |
4861 | #endif | |
4862 | #ifdef SIGBUS | |
4863 | signal (SIGBUS, crash_signal); | |
4864 | #endif | |
4865 | #ifdef SIGABRT | |
4866 | signal (SIGABRT, crash_signal); | |
4867 | #endif | |
4868 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
4869 | signal (SIGIOT, crash_signal); | |
4870 | #endif | |
15e5ad76 ZW |
4871 | #ifdef SIGFPE |
4872 | signal (SIGFPE, crash_signal); | |
4873 | #endif | |
854a97f0 | 4874 | |
476d9098 GK |
4875 | /* Other host-specific signal setup. */ |
4876 | (*host_hooks.extra_signals)(); | |
4877 | ||
f5e99456 NB |
4878 | /* Initialize the diagnostics reporting machinery, so option parsing |
4879 | can give warnings and errors. */ | |
4880 | diagnostic_initialize (global_dc); | |
c79043f3 NB |
4881 | |
4882 | /* Initialize the garbage-collector, string pools and tree type hash | |
4883 | table. */ | |
4884 | init_ggc (); | |
4885 | init_stringpool (); | |
4886 | init_ttree (); | |
f5e99456 NB |
4887 | } |
4888 | \f | |
4889 | /* Parse command line options and set default flag values, called | |
a1f300c0 | 4890 | after language-independent option-independent initialization. Do |
f5e99456 | 4891 | minimal options processing. Outputting diagnostics is OK, but GC |
5351f1ca NB |
4892 | and identifier hashtables etc. are not initialized yet. |
4893 | ||
0e9e1e0a | 4894 | Return nonzero to suppress compiler back end initialization. */ |
c79043f3 | 4895 | static void |
f5e99456 NB |
4896 | parse_options_and_default_flags (argc, argv) |
4897 | int argc; | |
4898 | char **argv; | |
4899 | { | |
4900 | int i; | |
3ac88239 | 4901 | |
f5e99456 NB |
4902 | /* Save in case md file wants to emit args as a comment. */ |
4903 | save_argc = argc; | |
4904 | save_argv = argv; | |
afe3d090 | 4905 | |
f5e99456 NB |
4906 | /* Initialize register usage now so switches may override. */ |
4907 | init_reg_sets (); | |
764dbbf2 | 4908 | |
c6d9a88c MM |
4909 | /* Register the language-independent parameters. */ |
4910 | add_params (lang_independent_params, LAST_PARAM); | |
4911 | ||
9ac121af KG |
4912 | /* This must be done after add_params but before argument processing. */ |
4913 | init_ggc_heuristics(); | |
4914 | ||
eaec9b3d | 4915 | /* Perform language-specific options initialization. */ |
77b1a921 | 4916 | (*lang_hooks.init_options) (); |
b53beeb2 | 4917 | |
4291d9c8 RS |
4918 | /* Scan to see what optimization level has been specified. That will |
4919 | determine the default value of many flags. */ | |
4920 | for (i = 1; i < argc; i++) | |
4921 | { | |
4922 | if (!strcmp (argv[i], "-O")) | |
4923 | { | |
4924 | optimize = 1; | |
16b6e120 | 4925 | optimize_size = 0; |
4291d9c8 RS |
4926 | } |
4927 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4928 | { | |
c6aded7c | 4929 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 | 4930 | char *p = &argv[i][2]; |
854a97f0 | 4931 | |
c6aded7c | 4932 | if ((p[0] == 's') && (p[1] == 0)) |
16b6e120 NC |
4933 | { |
4934 | optimize_size = 1; | |
854a97f0 KH |
4935 | |
4936 | /* Optimizing for size forces optimize to be 2. */ | |
16b6e120 NC |
4937 | optimize = 2; |
4938 | } | |
c6aded7c | 4939 | else |
854a97f0 | 4940 | { |
192babfd TP |
4941 | const int optimize_val = read_integral_parameter (p, p - 2, -1); |
4942 | if (optimize_val != -1) | |
16b6e120 | 4943 | { |
192babfd | 4944 | optimize = optimize_val; |
16b6e120 NC |
4945 | optimize_size = 0; |
4946 | } | |
c6aded7c | 4947 | } |
4291d9c8 RS |
4948 | } |
4949 | } | |
4950 | ||
201556f0 JJ |
4951 | if (!optimize) |
4952 | { | |
4953 | flag_merge_constants = 0; | |
4954 | } | |
4955 | ||
4291d9c8 RS |
4956 | if (optimize >= 1) |
4957 | { | |
6731a3e3 | 4958 | flag_defer_pop = 1; |
4291d9c8 RS |
4959 | flag_thread_jumps = 1; |
4960 | #ifdef DELAY_SLOTS | |
4961 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4962 | #endif |
4963 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4964 | flag_omit_frame_pointer = 1; | |
4291d9c8 | 4965 | #endif |
3ff51205 | 4966 | flag_guess_branch_prob = 1; |
57d1019b | 4967 | flag_cprop_registers = 1; |
96327cdc JH |
4968 | flag_loop_optimize = 1; |
4969 | flag_crossjumping = 1; | |
2c4b77f3 JH |
4970 | flag_if_conversion = 1; |
4971 | flag_if_conversion2 = 1; | |
4291d9c8 RS |
4972 | } |
4973 | ||
4974 | if (optimize >= 2) | |
4975 | { | |
db8cb48e | 4976 | flag_optimize_sibling_calls = 1; |
4291d9c8 | 4977 | flag_cse_follow_jumps = 1; |
8b3686ed | 4978 | flag_cse_skip_blocks = 1; |
7506f491 | 4979 | flag_gcse = 1; |
4291d9c8 RS |
4980 | flag_expensive_optimizations = 1; |
4981 | flag_strength_reduce = 1; | |
4982 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4983 | flag_rerun_loop_opt = 1; |
ac266247 | 4984 | flag_caller_saves = 1; |
4ac8e06e | 4985 | flag_force_mem = 1; |
ede7cd44 | 4986 | flag_peephole2 = 1; |
4291d9c8 RS |
4987 | #ifdef INSN_SCHEDULING |
4988 | flag_schedule_insns = 1; | |
4989 | flag_schedule_insns_after_reload = 1; | |
4990 | #endif | |
8c660648 | 4991 | flag_regmove = 1; |
3f9a83a9 | 4992 | flag_strict_aliasing = 1; |
b6d24183 | 4993 | flag_delete_null_pointer_checks = 1; |
58d8c980 | 4994 | flag_reorder_blocks = 1; |
194734e9 | 4995 | flag_reorder_functions = 1; |
4291d9c8 RS |
4996 | } |
4997 | ||
7e89c3a3 RK |
4998 | if (optimize >= 3) |
4999 | { | |
5000 | flag_inline_functions = 1; | |
2b2a8f1f | 5001 | flag_rename_registers = 1; |
617b465c | 5002 | flag_unswitch_loops = 1; |
7e89c3a3 RK |
5003 | } |
5004 | ||
efa3896a GK |
5005 | if (optimize < 2 || optimize_size) |
5006 | { | |
5007 | align_loops = 1; | |
5008 | align_jumps = 1; | |
5009 | align_labels = 1; | |
5010 | align_functions = 1; | |
de273d3f RH |
5011 | |
5012 | /* Don't reorder blocks when optimizing for size because extra | |
5013 | jump insns may be created; also barrier may create extra padding. | |
5014 | ||
5015 | More correctly we should have a block reordering mode that tried | |
5016 | to minimize the combined size of all the jumps. This would more | |
5017 | or less automatically remove extra jumps, but would also try to | |
5018 | use more short jumps instead of long jumps. */ | |
5019 | flag_reorder_blocks = 0; | |
efa3896a GK |
5020 | } |
5021 | ||
f5e99456 NB |
5022 | /* Initialize whether `char' is signed. */ |
5023 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
5024 | #ifdef DEFAULT_SHORT_ENUMS | |
5025 | /* Initialize how much space enums occupy, by default. */ | |
5026 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
5027 | #endif | |
5028 | ||
c1da383f DE |
5029 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
5030 | modify it. */ | |
5031 | target_flags = 0; | |
5032 | set_target_switch (""); | |
5033 | ||
fc85e1ad | 5034 | /* Unwind tables are always present in an ABI-conformant IA-64 |
854a97f0 | 5035 | object file, so the default should be ON. */ |
fc85e1ad AH |
5036 | #ifdef IA64_UNWIND_INFO |
5037 | flag_unwind_tables = IA64_UNWIND_INFO; | |
5038 | #endif | |
5039 | ||
4291d9c8 RS |
5040 | #ifdef OPTIMIZATION_OPTIONS |
5041 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 5042 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
5043 | #endif |
5044 | ||
39dd8003 NC |
5045 | /* Perform normal command line switch decoding. */ |
5046 | for (i = 1; i < argc;) | |
4291d9c8 | 5047 | { |
57883c53 MM |
5048 | int lang_processed; |
5049 | int indep_processed; | |
f88b51fc | 5050 | |
39dd8003 | 5051 | /* Give the language a chance to decode the option for itself. */ |
ee811cfd | 5052 | lang_processed = (*lang_hooks.decode_option) (argc - i, argv + i); |
43a8f6d5 | 5053 | |
57883c53 MM |
5054 | if (lang_processed >= 0) |
5055 | /* Now see if the option also has a language independent meaning. | |
5056 | Some options are both language specific and language independent, | |
5057 | eg --help. */ | |
5058 | indep_processed = independent_decode_option (argc - i, argv + i); | |
5059 | else | |
5060 | { | |
5061 | lang_processed = -lang_processed; | |
5062 | indep_processed = 0; | |
5063 | } | |
39dd8003 NC |
5064 | |
5065 | if (lang_processed || indep_processed) | |
04324727 | 5066 | i += MAX (lang_processed, indep_processed); |
39dd8003 | 5067 | else |
43a8f6d5 | 5068 | { |
854a97f0 KH |
5069 | const char *option = NULL; |
5070 | const char *lang = NULL; | |
0c70c30f | 5071 | unsigned int j; |
854a97f0 | 5072 | |
0c70c30f NC |
5073 | /* It is possible that the command line switch is not valid for the |
5074 | current language, but it is valid for another language. In order | |
5075 | to be compatible with previous versions of the compiler (which | |
5076 | did not issue an error message in this case) we check for this | |
bc83ee59 | 5077 | possibility here. If we do find a match, then if extra_warnings |
0c70c30f NC |
5078 | is set we generate a warning message, otherwise we will just |
5079 | ignore the option. */ | |
b6a1cbae | 5080 | for (j = 0; j < ARRAY_SIZE (documented_lang_options); j++) |
0c70c30f NC |
5081 | { |
5082 | option = documented_lang_options[j].option; | |
854a97f0 | 5083 | |
0c70c30f NC |
5084 | if (option == NULL) |
5085 | lang = documented_lang_options[j].description; | |
5086 | else if (! strncmp (argv[i], option, strlen (option))) | |
5087 | break; | |
5088 | } | |
5089 | ||
b6a1cbae | 5090 | if (j != ARRAY_SIZE (documented_lang_options)) |
0c70c30f NC |
5091 | { |
5092 | if (extra_warnings) | |
5093 | { | |
1f978f5f | 5094 | warning ("ignoring command line option '%s'", argv[i]); |
0c70c30f | 5095 | if (lang) |
04324727 | 5096 | warning |
1f978f5f | 5097 | ("(it is valid for %s but not the selected language)", |
04324727 | 5098 | lang); |
0c70c30f NC |
5099 | } |
5100 | } | |
337aa8ed | 5101 | else if (argv[i][0] == '-' && argv[i][1] == 'g') |
04324727 | 5102 | warning ("`%s': unknown or unsupported -g option", &argv[i][2]); |
0c70c30f | 5103 | else |
1f978f5f | 5104 | error ("unrecognized option `%s'", argv[i]); |
854a97f0 | 5105 | |
43a8f6d5 JM |
5106 | i++; |
5107 | } | |
4291d9c8 | 5108 | } |
854a97f0 | 5109 | |
b0148884 JM |
5110 | if (flag_no_inline == 2) |
5111 | flag_no_inline = 0; | |
5112 | else | |
5113 | flag_really_no_inline = flag_no_inline; | |
5114 | ||
a32274ad NB |
5115 | /* Set flag_no_inline before the post_options () hook. The C front |
5116 | ends use it to determine tree inlining defaults. FIXME: such | |
5117 | code should be lang-independent when all front ends use tree | |
5118 | inlining, in which case it, and this condition, should be moved | |
5119 | to the top of process_options() instead. */ | |
f246a305 RS |
5120 | if (optimize == 0) |
5121 | { | |
a2468e45 BK |
5122 | /* Inlining does not work if not optimizing, |
5123 | so force it not to be done. */ | |
f246a305 RS |
5124 | flag_no_inline = 1; |
5125 | warn_inline = 0; | |
a2468e45 | 5126 | |
ee811cfd | 5127 | /* The c_decode_option function and decode_option hook set |
a2468e45 BK |
5128 | this to `2' if -Wall is used, so we can avoid giving out |
5129 | lots of errors for people who don't realize what -Wall does. */ | |
5130 | if (warn_uninitialized == 1) | |
5131 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
5132 | } |
5133 | ||
b0148884 JM |
5134 | if (flag_really_no_inline == 2) |
5135 | flag_really_no_inline = flag_no_inline; | |
a32274ad NB |
5136 | } |
5137 | \f | |
5138 | /* Process the options that have been parsed. */ | |
5139 | static void | |
5140 | process_options () | |
5141 | { | |
4291d9c8 RS |
5142 | #ifdef OVERRIDE_OPTIONS |
5143 | /* Some machines may reject certain combinations of options. */ | |
5144 | OVERRIDE_OPTIONS; | |
5145 | #endif | |
5146 | ||
b1cbe78c NB |
5147 | /* Set aux_base_name if not already set. */ |
5148 | if (aux_base_name) | |
5149 | ; | |
5150 | else if (filename) | |
5151 | { | |
5152 | char *name = xstrdup (lbasename (filename)); | |
5153 | ||
5154 | strip_off_ending (name, strlen (name)); | |
5155 | aux_base_name = name; | |
5156 | } | |
5157 | else | |
5158 | aux_base_name = "gccaux"; | |
5159 | ||
efa3896a GK |
5160 | /* Set up the align_*_log variables, defaulting them to 1 if they |
5161 | were still unset. */ | |
5162 | if (align_loops <= 0) align_loops = 1; | |
2cca7283 JH |
5163 | if (align_loops_max_skip > align_loops || !align_loops) |
5164 | align_loops_max_skip = align_loops - 1; | |
854a97f0 | 5165 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
efa3896a | 5166 | if (align_jumps <= 0) align_jumps = 1; |
2cca7283 JH |
5167 | if (align_jumps_max_skip > align_jumps || !align_jumps) |
5168 | align_jumps_max_skip = align_jumps - 1; | |
854a97f0 | 5169 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
efa3896a | 5170 | if (align_labels <= 0) align_labels = 1; |
854a97f0 | 5171 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
2cca7283 JH |
5172 | if (align_labels_max_skip > align_labels || !align_labels) |
5173 | align_labels_max_skip = align_labels - 1; | |
efa3896a | 5174 | if (align_functions <= 0) align_functions = 1; |
854a97f0 KH |
5175 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
5176 | ||
4291d9c8 RS |
5177 | /* Unrolling all loops implies that standard loop unrolling must also |
5178 | be done. */ | |
5179 | if (flag_unroll_all_loops) | |
5180 | flag_unroll_loops = 1; | |
b17d5d7c ZD |
5181 | |
5182 | if (flag_unroll_loops) | |
5183 | { | |
5184 | flag_old_unroll_loops = 0; | |
5185 | flag_old_unroll_all_loops = 0; | |
5186 | } | |
5187 | ||
5188 | if (flag_old_unroll_all_loops) | |
5189 | flag_old_unroll_loops = 1; | |
5190 | ||
5191 | /* Old loop unrolling requires that strength_reduction be on also. Silently | |
4291d9c8 RS |
5192 | turn on strength reduction here if it isn't already on. Also, the loop |
5193 | unrolling code assumes that cse will be run after loop, so that must | |
5194 | be turned on also. */ | |
b17d5d7c | 5195 | if (flag_old_unroll_loops) |
4291d9c8 RS |
5196 | { |
5197 | flag_strength_reduce = 1; | |
5198 | flag_rerun_cse_after_loop = 1; | |
5199 | } | |
b17d5d7c ZD |
5200 | if (flag_unroll_loops || flag_peel_loops) |
5201 | flag_rerun_cse_after_loop = 1; | |
4291d9c8 | 5202 | |
b932f770 JH |
5203 | if (flag_non_call_exceptions) |
5204 | flag_asynchronous_unwind_tables = 1; | |
5205 | if (flag_asynchronous_unwind_tables) | |
5206 | flag_unwind_tables = 1; | |
5207 | ||
e72fcfe8 JH |
5208 | /* Disable unit-at-a-time mode for frontends not supporting callgraph |
5209 | interface. */ | |
5210 | if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function) | |
5211 | flag_unit_at_a_time = 0; | |
5212 | ||
4291d9c8 RS |
5213 | /* Warn about options that are not supported on this machine. */ |
5214 | #ifndef INSN_SCHEDULING | |
5215 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
5216 | warning ("instruction scheduling not supported on this target machine"); | |
5217 | #endif | |
5218 | #ifndef DELAY_SLOTS | |
5219 | if (flag_delayed_branch) | |
5220 | warning ("this target machine does not have delayed branches"); | |
5221 | #endif | |
5222 | ||
19283265 RH |
5223 | user_label_prefix = USER_LABEL_PREFIX; |
5224 | if (flag_leading_underscore != -1) | |
5225 | { | |
854a97f0 | 5226 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
5227 | issue a warning and ignore this option. */ |
5228 | if (user_label_prefix[0] == 0 || | |
5229 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
5230 | { | |
5231 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
5232 | } | |
5233 | else | |
5234 | warning ("-f%sleading-underscore not supported on this target machine", | |
5235 | flag_leading_underscore ? "" : "no-"); | |
5236 | } | |
5237 | ||
4291d9c8 RS |
5238 | /* If we are in verbose mode, write out the version and maybe all the |
5239 | option flags in use. */ | |
5240 | if (version_flag) | |
5241 | { | |
3d5cdd42 | 5242 | print_version (stderr, ""); |
4291d9c8 | 5243 | if (! quiet_flag) |
3d5cdd42 | 5244 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
5245 | } |
5246 | ||
26182e15 | 5247 | if (! quiet_flag || flag_detailed_statistics) |
f5e99456 | 5248 | time_report = 1; |
4291d9c8 | 5249 | |
f5e99456 NB |
5250 | if (flag_syntax_only) |
5251 | { | |
5252 | write_symbols = NO_DEBUG; | |
5253 | profile_flag = 0; | |
f5e99456 | 5254 | } |
4291d9c8 | 5255 | |
f5e99456 NB |
5256 | /* Now we know write_symbols, set up the debug hooks based on it. |
5257 | By default we do nothing for debug output. */ | |
5258 | #if defined(DBX_DEBUGGING_INFO) | |
5259 | if (write_symbols == DBX_DEBUG) | |
5260 | debug_hooks = &dbx_debug_hooks; | |
4291d9c8 | 5261 | #endif |
f5e99456 NB |
5262 | #if defined(XCOFF_DEBUGGING_INFO) |
5263 | if (write_symbols == XCOFF_DEBUG) | |
5264 | debug_hooks = &xcoff_debug_hooks; | |
3d5cdd42 | 5265 | #endif |
f5e99456 NB |
5266 | #ifdef SDB_DEBUGGING_INFO |
5267 | if (write_symbols == SDB_DEBUG) | |
5268 | debug_hooks = &sdb_debug_hooks; | |
5269 | #endif | |
5270 | #ifdef DWARF_DEBUGGING_INFO | |
5271 | if (write_symbols == DWARF_DEBUG) | |
5272 | debug_hooks = &dwarf_debug_hooks; | |
5273 | #endif | |
5274 | #ifdef DWARF2_DEBUGGING_INFO | |
5275 | if (write_symbols == DWARF2_DEBUG) | |
5276 | debug_hooks = &dwarf2_debug_hooks; | |
3d5cdd42 | 5277 | #endif |
7a0c8d71 DR |
5278 | #ifdef VMS_DEBUGGING_INFO |
5279 | if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
5280 | debug_hooks = &vmsdbg_debug_hooks; | |
5281 | #endif | |
4291d9c8 | 5282 | |
f5e99456 NB |
5283 | /* If auxiliary info generation is desired, open the output file. |
5284 | This goes in the same directory as the source file--unlike | |
5285 | all the other output files. */ | |
5286 | if (flag_gen_aux_info) | |
5287 | { | |
5288 | aux_info_file = fopen (aux_info_file_name, "w"); | |
5289 | if (aux_info_file == 0) | |
5290 | fatal_io_error ("can't open %s", aux_info_file_name); | |
5291 | } | |
309a8875 | 5292 | |
f5e99456 | 5293 | if (! targetm.have_named_sections) |
4291d9c8 | 5294 | { |
f5e99456 NB |
5295 | if (flag_function_sections) |
5296 | { | |
4d6baafa | 5297 | warning ("-ffunction-sections not supported for this target"); |
f5e99456 NB |
5298 | flag_function_sections = 0; |
5299 | } | |
5300 | if (flag_data_sections) | |
5301 | { | |
4d6baafa | 5302 | warning ("-fdata-sections not supported for this target"); |
f5e99456 NB |
5303 | flag_data_sections = 0; |
5304 | } | |
4291d9c8 | 5305 | } |
f5e99456 | 5306 | |
8456b95a | 5307 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 5308 | { |
4d6baafa | 5309 | warning ("-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 5310 | flag_function_sections = 0; |
3d5cdd42 | 5311 | } |
f5e99456 | 5312 | |
0dd0e980 JH |
5313 | #ifndef HAVE_prefetch |
5314 | if (flag_prefetch_loop_arrays) | |
5315 | { | |
5316 | warning ("-fprefetch-loop-arrays not supported for this target"); | |
5317 | flag_prefetch_loop_arrays = 0; | |
5318 | } | |
5319 | #else | |
5320 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
5321 | { | |
5322 | warning ("-fprefetch-loop-arrays not supported for this target (try -march switches)"); | |
5323 | flag_prefetch_loop_arrays = 0; | |
5324 | } | |
5325 | #endif | |
5326 | ||
1398974c JJ |
5327 | /* This combination of options isn't handled for i386 targets and doesn't |
5328 | make much sense anyway, so don't allow it. */ | |
5329 | if (flag_prefetch_loop_arrays && optimize_size) | |
5330 | { | |
5331 | warning ("-fprefetch-loop-arrays is not supported with -Os"); | |
5332 | flag_prefetch_loop_arrays = 0; | |
5333 | } | |
5334 | ||
f5e99456 NB |
5335 | #ifndef OBJECT_FORMAT_ELF |
5336 | if (flag_function_sections && write_symbols != NO_DEBUG) | |
4d6baafa | 5337 | warning ("-ffunction-sections may affect debugging on some targets"); |
f5e99456 | 5338 | #endif |
52bfebf0 RS |
5339 | |
5340 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
5341 | if (flag_signaling_nans) | |
5342 | flag_trapping_math = 1; | |
4291d9c8 | 5343 | } |
f5e99456 | 5344 | \f |
c79043f3 | 5345 | /* Initialize the compiler back end. */ |
f5e99456 | 5346 | static void |
c79043f3 | 5347 | backend_init () |
f5e99456 | 5348 | { |
6cde4876 JL |
5349 | /* init_emit_once uses reg_raw_mode and therefore must be called |
5350 | after init_regs which initialized reg_raw_mode. */ | |
5351 | init_regs (); | |
f5e99456 NB |
5352 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
5353 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
7a0c8d71 DR |
5354 | #ifdef VMS_DEBUGGING_INFO |
5355 | /* Enable line number info for traceback */ | |
5356 | || debug_info_level > DINFO_LEVEL_NONE | |
5357 | #endif | |
5358 | || flag_test_coverage | |
5359 | || warn_notreached); | |
6cde4876 | 5360 | init_fake_stack_mems (); |
f5e99456 | 5361 | init_alias_once (); |
f5e99456 NB |
5362 | init_loop (); |
5363 | init_reload (); | |
5364 | init_function_once (); | |
f5e99456 | 5365 | init_varasm_once (); |
f5e99456 NB |
5366 | |
5367 | /* The following initialization functions need to generate rtl, so | |
5368 | provide a dummy function context for them. */ | |
5369 | init_dummy_function_start (); | |
5370 | init_expmed (); | |
f5e99456 NB |
5371 | if (flag_caller_saves) |
5372 | init_caller_save (); | |
5373 | expand_dummy_function_end (); | |
5374 | } | |
5375 | \f | |
0e9e1e0a | 5376 | /* Language-dependent initialization. Returns nonzero on success. */ |
22703ccc | 5377 | static int |
f5e99456 NB |
5378 | lang_dependent_init (name) |
5379 | const char *name; | |
4291d9c8 | 5380 | { |
f5e99456 NB |
5381 | if (dump_base_name == 0) |
5382 | dump_base_name = name ? name : "gccdump"; | |
26182e15 | 5383 | |
f5e99456 NB |
5384 | /* Front-end initialization. This hook can assume that GC, |
5385 | identifier hashes etc. are set up, but debug initialization is | |
5386 | not done yet. This routine must return the original filename | |
5387 | (e.g. foo.i -> foo.c) so can correctly initialize debug output. */ | |
5388 | name = (*lang_hooks.init) (name); | |
22703ccc NB |
5389 | if (name == NULL) |
5390 | return 0; | |
4291d9c8 | 5391 | |
f5e99456 NB |
5392 | main_input_filename = input_filename = name; |
5393 | init_asm_output (name); | |
3d5cdd42 | 5394 | |
f5e99456 NB |
5395 | /* These create various _DECL nodes, so need to be called after the |
5396 | front end is initialized. */ | |
5397 | init_eh (); | |
5398 | init_optabs (); | |
7ab0121e JW |
5399 | |
5400 | /* The following initialization functions need to generate rtl, so | |
5401 | provide a dummy function context for them. */ | |
5402 | init_dummy_function_start (); | |
1f8c3c5b | 5403 | init_expr_once (); |
7ab0121e | 5404 | expand_dummy_function_end (); |
3d5cdd42 | 5405 | |
f5e99456 NB |
5406 | /* Put an entry on the input file stack for the main input file. */ |
5407 | push_srcloc (input_filename, 0); | |
3d5cdd42 | 5408 | |
f5e99456 NB |
5409 | /* If dbx symbol table desired, initialize writing it and output the |
5410 | predefined types. */ | |
5411 | timevar_push (TV_SYMOUT); | |
4291d9c8 | 5412 | |
f5e99456 NB |
5413 | #ifdef DWARF2_UNWIND_INFO |
5414 | if (dwarf2out_do_frame ()) | |
5415 | dwarf2out_frame_init (); | |
5416 | #endif | |
4291d9c8 | 5417 | |
f5e99456 NB |
5418 | /* Now we have the correct original filename, we can initialize |
5419 | debug output. */ | |
5420 | (*debug_hooks->init) (name); | |
4291d9c8 | 5421 | |
f5e99456 | 5422 | timevar_pop (TV_SYMOUT); |
22703ccc NB |
5423 | |
5424 | return 1; | |
5425 | } | |
5426 | \f | |
5427 | /* Clean up: close opened files, etc. */ | |
5428 | ||
5429 | static void | |
5430 | finalize () | |
5431 | { | |
5432 | /* Close the dump files. */ | |
5433 | if (flag_gen_aux_info) | |
5434 | { | |
5435 | fclose (aux_info_file); | |
5436 | if (errorcount) | |
5437 | unlink (aux_info_file_name); | |
5438 | } | |
5439 | ||
5440 | /* Close non-debugging input and output files. Take special care to note | |
5441 | whether fclose returns an error, since the pages might still be on the | |
5442 | buffer chain while the file is open. */ | |
5443 | ||
5444 | if (asm_out_file) | |
5445 | { | |
5446 | if (ferror (asm_out_file) != 0) | |
5447 | fatal_io_error ("error writing to %s", asm_file_name); | |
5448 | if (fclose (asm_out_file) != 0) | |
5449 | fatal_io_error ("error closing %s", asm_file_name); | |
5450 | } | |
5451 | ||
5452 | /* Do whatever is necessary to finish printing the graphs. */ | |
5453 | if (graph_dump_format != no_graph) | |
5454 | { | |
5455 | int i; | |
5456 | ||
5457 | for (i = 0; i < (int) DFI_MAX; ++i) | |
5458 | if (dump_file[i].initialized && dump_file[i].graph_dump_p) | |
5459 | { | |
5460 | char seq[16]; | |
5461 | char *suffix; | |
5462 | ||
6baf9874 | 5463 | sprintf (seq, DUMPFILE_FORMAT, i); |
22703ccc NB |
5464 | suffix = concat (seq, dump_file[i].extension, NULL); |
5465 | finish_graph_dump_file (dump_base_name, suffix); | |
5466 | free (suffix); | |
5467 | } | |
5468 | } | |
5469 | ||
5470 | if (mem_report) | |
5471 | { | |
5472 | ggc_print_statistics (); | |
5473 | stringpool_statistics (); | |
5474 | dump_tree_statistics (); | |
5475 | } | |
5476 | ||
5477 | /* Free up memory for the benefit of leak detectors. */ | |
5478 | free_reg_info (); | |
5479 | ||
5480 | /* Language-specific end of compilation actions. */ | |
5481 | (*lang_hooks.finish) (); | |
f5e99456 NB |
5482 | } |
5483 | \f | |
4d6baafa NB |
5484 | /* Initialize the compiler, and compile the input file. */ |
5485 | static void | |
b1cbe78c NB |
5486 | do_compile (no_backend) |
5487 | int no_backend; | |
f5e99456 | 5488 | { |
a9915c78 RK |
5489 | /* We cannot start timing until after options are processed since that |
5490 | says if we run timers or not. */ | |
5491 | init_timevar (); | |
5492 | timevar_start (TV_TOTAL); | |
5493 | ||
c79043f3 NB |
5494 | /* Set up the back-end if requested. */ |
5495 | if (!no_backend) | |
5496 | backend_init (); | |
f5e99456 | 5497 | |
22703ccc NB |
5498 | /* Language-dependent initialization. Returns true on success. */ |
5499 | if (lang_dependent_init (filename)) | |
5500 | compile_file (); | |
f5e99456 | 5501 | |
22703ccc | 5502 | finalize (); |
f5e99456 NB |
5503 | |
5504 | /* Stop timing and print the times. */ | |
5505 | timevar_stop (TV_TOTAL); | |
5506 | timevar_print (stderr); | |
4d6baafa NB |
5507 | } |
5508 | \f | |
5509 | /* Entry point of cc1, cc1plus, jc1, f771, etc. | |
5510 | Decode command args, then call compile_file. | |
5511 | Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
5512 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
5513 | ||
5514 | It is not safe to call this function more than once. */ | |
5515 | ||
5516 | int | |
5517 | toplev_main (argc, argv) | |
5518 | int argc; | |
5519 | char **argv; | |
5520 | { | |
5521 | /* Initialization of GCC's environment, and diagnostics. */ | |
9cabb1d8 | 5522 | general_init (argv[0]); |
4d6baafa NB |
5523 | |
5524 | /* Parse the options and do minimal processing; basically just | |
5525 | enough to default flags appropriately. */ | |
c79043f3 | 5526 | parse_options_and_default_flags (argc, argv); |
4d6baafa NB |
5527 | |
5528 | /* Exit early if we can (e.g. -help). */ | |
c79043f3 | 5529 | if (!exit_after_options) |
b1cbe78c NB |
5530 | { |
5531 | /* All command line options have been parsed; allow the front | |
5532 | end to perform consistency checks, etc. */ | |
5533 | bool no_backend = (*lang_hooks.post_options) (); | |
5534 | ||
5535 | /* The bulk of command line switch processing. */ | |
5536 | process_options (); | |
5537 | ||
5538 | /* Don't do any more if an error has already occurred. */ | |
5539 | if (!errorcount) | |
5540 | do_compile (no_backend); | |
5541 | } | |
f5e99456 NB |
5542 | |
5543 | if (errorcount || sorrycount) | |
5544 | return (FATAL_EXIT_CODE); | |
5545 | ||
5546 | return (SUCCESS_EXIT_CODE); | |
4291d9c8 | 5547 | } |