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Commit | Line | Data |
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5e6908ea | 1 | /* Top level of GCC compilers (cc1, cc1plus, etc.) |
4559fd9e | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
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" |
b255a036 | 78 | #include "cgraph.h" |
2772ef3e | 79 | #include "opts.h" |
5b0e2409 | 80 | #include "coverage.h" |
f246a305 | 81 | |
76ead72b RL |
82 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
83 | #include "dwarf2out.h" | |
84 | #endif | |
85 | ||
4f70758f | 86 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
87 | #include "dbxout.h" |
88 | #endif | |
89 | ||
90 | #ifdef SDB_DEBUGGING_INFO | |
91 | #include "sdbout.h" | |
92 | #endif | |
440aabf8 NB |
93 | |
94 | #ifdef XCOFF_DEBUGGING_INFO | |
95 | #include "xcoffout.h" /* Needed for external data | |
96 | declarations for e.g. AIX 4.x. */ | |
97 | #endif | |
ddc9542b | 98 | |
b0316e35 RS |
99 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
100 | to ASM_FINISH_DECLARE_OBJECT. */ | |
101 | ||
102 | extern int size_directive_output; | |
5e10b3cc | 103 | extern tree last_assemble_variable_decl; |
b0316e35 | 104 | |
e25a75e6 AJ |
105 | extern void reg_alloc (void); |
106 | ||
107 | static void general_init (char *); | |
108 | static void parse_options_and_default_flags (int, char **); | |
109 | static void do_compile (void); | |
110 | static void process_options (void); | |
111 | static void backend_init (void); | |
112 | static int lang_dependent_init (const char *); | |
113 | static void init_asm_output (const char *); | |
114 | static void finalize (void); | |
115 | ||
e25a75e6 AJ |
116 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
117 | static void setup_core_dumping (void); | |
118 | static void compile_file (void); | |
e25a75e6 | 119 | |
e25a75e6 AJ |
120 | static int decode_f_option (const char *); |
121 | static int decode_W_option (const char *); | |
122 | static int decode_g_option (const char *); | |
903caebf | 123 | static unsigned int independent_decode_option (char **); |
e25a75e6 | 124 | |
e25a75e6 AJ |
125 | static int print_single_switch (FILE *, int, int, const char *, |
126 | const char *, const char *, | |
127 | const char *, const char *); | |
128 | static void print_switch_values (FILE *, int, int, const char *, | |
129 | const char *, const char *); | |
735a0e33 | 130 | |
ddc9542b AH |
131 | /* Rest of compilation helper functions. */ |
132 | static bool rest_of_handle_inlining (tree); | |
133 | static rtx rest_of_handle_ssa (tree, rtx); | |
134 | static void rest_of_handle_cse (tree, rtx); | |
135 | static void rest_of_handle_cse2 (tree, rtx); | |
136 | static void rest_of_handle_gcse (tree, rtx); | |
137 | static void rest_of_handle_life (tree, rtx); | |
138 | static void rest_of_handle_loop_optimize (tree, rtx); | |
139 | static void rest_of_handle_loop2 (tree, rtx); | |
140 | static void rest_of_handle_jump_bypass (tree, rtx); | |
141 | static void rest_of_handle_sibling_calls (rtx); | |
142 | static void rest_of_handle_null_pointer (tree, rtx); | |
143 | static void rest_of_handle_addresof (tree, rtx); | |
144 | static void rest_of_handle_cfg (tree, rtx); | |
145 | static void rest_of_handle_branch_prob (tree, rtx); | |
146 | static void rest_of_handle_if_conversion (tree, rtx); | |
147 | static void rest_of_handle_if_after_combine (tree, rtx); | |
148 | static void rest_of_handle_tracer (tree, rtx); | |
149 | static void rest_of_handle_combine (tree, rtx); | |
150 | static void rest_of_handle_regmove (tree, rtx); | |
ddc9542b | 151 | #ifdef INSN_SCHEDULING |
a2f8629a | 152 | static void rest_of_handle_sched (tree, rtx); |
ddc9542b AH |
153 | static void rest_of_handle_sched2 (tree, rtx); |
154 | #endif | |
155 | static bool rest_of_handle_new_regalloc (tree, rtx, int *); | |
156 | static bool rest_of_handle_old_regalloc (tree, rtx, int *); | |
157 | static void rest_of_handle_regrename (tree, rtx); | |
158 | static void rest_of_handle_reorder_blocks (tree, rtx); | |
159 | #ifdef STACK_REGS | |
160 | static void rest_of_handle_stack_regs (tree, rtx); | |
161 | #endif | |
162 | static void rest_of_handle_machine_reorg (tree, rtx); | |
163 | #ifdef DELAY_SLOTS | |
164 | static void rest_of_handle_delay_slots (tree, rtx); | |
165 | #endif | |
166 | static void rest_of_handle_final (tree, rtx); | |
167 | ||
ff45c01e NB |
168 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
169 | static int set_yydebug; | |
170 | ||
4bfec483 NB |
171 | /* True if we don't need a backend (e.g. preprocessing only). */ |
172 | static bool no_backend; | |
173 | ||
3d5cdd42 DE |
174 | /* Length of line when printing switch values. */ |
175 | #define MAX_LINE 75 | |
176 | ||
4291d9c8 RS |
177 | /* Name of program invoked, sans directories. */ |
178 | ||
7adfcfed | 179 | const char *progname; |
4291d9c8 | 180 | |
aa5b94de | 181 | /* Copy of arguments to toplev_main. */ |
4291d9c8 RS |
182 | int save_argc; |
183 | char **save_argv; | |
ddc9542b | 184 | |
4291d9c8 RS |
185 | /* Name of top-level original source file (what was input to cpp). |
186 | This comes from the #-command at the beginning of the actual input. | |
187 | If there isn't any there, then this is the cc1 input file name. */ | |
188 | ||
3b304f5b | 189 | const char *main_input_filename; |
4291d9c8 | 190 | |
6060edcb | 191 | /* Current position in real source file. */ |
4291d9c8 | 192 | |
6060edcb | 193 | location_t input_location; |
4291d9c8 | 194 | |
f1db3576 JL |
195 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
196 | int no_new_pseudos; | |
197 | ||
4291d9c8 RS |
198 | /* Stack of currently pending input files. */ |
199 | ||
200 | struct file_stack *input_file_stack; | |
201 | ||
202 | /* Incremented on each change to input_file_stack. */ | |
203 | int input_file_stack_tick; | |
204 | ||
4291d9c8 RS |
205 | /* Name to use as base of names for dump output files. */ |
206 | ||
87e11268 | 207 | const char *dump_base_name; |
4291d9c8 | 208 | |
ea67fe71 NS |
209 | /* Name to use as a base for auxiliary output files. */ |
210 | ||
d185d268 | 211 | const char *aux_base_name; |
ea67fe71 | 212 | |
6baf9874 DR |
213 | /* Format to use to print dumpfile index value */ |
214 | #ifndef DUMPFILE_FORMAT | |
215 | #define DUMPFILE_FORMAT ".%02d." | |
216 | #endif | |
217 | ||
4291d9c8 RS |
218 | /* Bit flags that specify the machine subtype we are compiling for. |
219 | Bits are tested using macros TARGET_... defined in the tm.h file | |
220 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
221 | ||
222 | extern int target_flags; | |
223 | ||
a27fb29b RS |
224 | /* A mask of target_flags that includes bit X if X was set or cleared |
225 | on the command line. */ | |
226 | ||
227 | int target_flags_explicit; | |
228 | ||
a51d908e NB |
229 | /* Debug hooks - dependent upon command line options. */ |
230 | ||
54b6670a | 231 | const struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks; |
a51d908e | 232 | |
61098249 RH |
233 | /* Describes a dump file. */ |
234 | ||
235 | struct dump_file_info | |
236 | { | |
237 | /* The unique extension to apply, e.g. ".jump". */ | |
854a97f0 | 238 | const char *const extension; |
61098249 RH |
239 | |
240 | /* The -d<c> character that enables this dump file. */ | |
241 | char const debug_switch; | |
242 | ||
243 | /* True if there is a corresponding graph dump file. */ | |
244 | char const graph_dump_p; | |
245 | ||
246 | /* True if the user selected this dump. */ | |
247 | char enabled; | |
248 | ||
249 | /* True if the files have been initialized (ie truncated). */ | |
250 | char initialized; | |
251 | }; | |
252 | ||
253 | /* Enumerate the extant dump files. */ | |
254 | ||
255 | enum dump_file_index | |
256 | { | |
257 | DFI_rtl, | |
48d9ade5 | 258 | DFI_sibling, |
52a11cbf | 259 | DFI_eh, |
61098249 | 260 | DFI_jump, |
61098249 | 261 | DFI_ssa, |
0b47e4c1 | 262 | DFI_ssa_ccp, |
62d285ff | 263 | DFI_ssa_dce, |
61098249 | 264 | DFI_ussa, |
38c1593d | 265 | DFI_null, |
0826f1d8 JL |
266 | DFI_cse, |
267 | DFI_addressof, | |
61098249 RH |
268 | DFI_gcse, |
269 | DFI_loop, | |
a0134312 | 270 | DFI_bypass, |
51891abe | 271 | DFI_cfg, |
61098249 | 272 | DFI_bp, |
0fb53e68 | 273 | DFI_ce1, |
5c856b23 | 274 | DFI_tracer, |
617b465c | 275 | DFI_loop2, |
38c1593d | 276 | DFI_cse2, |
51891abe | 277 | DFI_life, |
61098249 | 278 | DFI_combine, |
0fb53e68 | 279 | DFI_ce2, |
61098249 RH |
280 | DFI_regmove, |
281 | DFI_sched, | |
282 | DFI_lreg, | |
283 | DFI_greg, | |
8bb16620 | 284 | DFI_postreload, |
61098249 RH |
285 | DFI_flow2, |
286 | DFI_peephole2, | |
5fa41e13 | 287 | DFI_rnreg, |
b9422b69 | 288 | DFI_bbro, |
c079e6fe | 289 | DFI_ce3, |
fe3ad572 | 290 | DFI_branch_target_load, |
61098249 | 291 | DFI_sched2, |
1e5fd094 | 292 | DFI_stack, |
61098249 RH |
293 | DFI_mach, |
294 | DFI_dbr, | |
61098249 RH |
295 | DFI_MAX |
296 | }; | |
297 | ||
298 | /* Describes all the dump files. Should be kept in order of the | |
9ec6d7ab RH |
299 | pass and in sync with dump_file_index above. |
300 | ||
301 | Remaining -d letters: | |
302 | ||
fe651b1d R |
303 | " m q " |
304 | " JK O Q UV YZ" | |
9ec6d7ab | 305 | */ |
61098249 | 306 | |
c083a819 | 307 | static struct dump_file_info dump_file[DFI_MAX] = |
61098249 RH |
308 | { |
309 | { "rtl", 'r', 0, 0, 0 }, | |
48d9ade5 | 310 | { "sibling", 'i', 0, 0, 0 }, |
52a11cbf | 311 | { "eh", 'h', 0, 0, 0 }, |
61098249 | 312 | { "jump", 'j', 0, 0, 0 }, |
61098249 | 313 | { "ssa", 'e', 1, 0, 0 }, |
0b47e4c1 | 314 | { "ssaccp", 'W', 1, 0, 0 }, |
62d285ff | 315 | { "ssadce", 'X', 1, 0, 0 }, |
61098249 | 316 | { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
38c1593d | 317 | { "null", 'u', 0, 0, 0 }, |
0826f1d8 JL |
318 | { "cse", 's', 0, 0, 0 }, |
319 | { "addressof", 'F', 0, 0, 0 }, | |
61098249 RH |
320 | { "gcse", 'G', 1, 0, 0 }, |
321 | { "loop", 'L', 1, 0, 0 }, | |
a0134312 | 322 | { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
51891abe | 323 | { "cfg", 'f', 1, 0, 0 }, |
61098249 | 324 | { "bp", 'b', 1, 0, 0 }, |
a9a4005f | 325 | { "ce1", 'C', 1, 0, 0 }, |
5c856b23 | 326 | { "tracer", 'T', 1, 0, 0 }, |
617b465c | 327 | { "loop2", 'L', 1, 0, 0 }, |
38c1593d | 328 | { "cse2", 't', 1, 0, 0 }, |
51891abe | 329 | { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 330 | { "combine", 'c', 1, 0, 0 }, |
0fb53e68 | 331 | { "ce2", 'C', 1, 0, 0 }, |
61098249 RH |
332 | { "regmove", 'N', 1, 0, 0 }, |
333 | { "sched", 'S', 1, 0, 0 }, | |
334 | { "lreg", 'l', 1, 0, 0 }, | |
335 | { "greg", 'g', 1, 0, 0 }, | |
8bb16620 | 336 | { "postreload", 'o', 1, 0, 0 }, |
61098249 RH |
337 | { "flow2", 'w', 1, 0, 0 }, |
338 | { "peephole2", 'z', 1, 0, 0 }, | |
5fa41e13 | 339 | { "rnreg", 'n', 1, 0, 0 }, |
b9422b69 | 340 | { "bbro", 'B', 1, 0, 0 }, |
c079e6fe | 341 | { "ce3", 'E', 1, 0, 0 }, |
fe3ad572 | 342 | { "btl", 'd', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 343 | { "sched2", 'R', 1, 0, 0 }, |
1e5fd094 | 344 | { "stack", 'k', 1, 0, 0 }, |
61098249 RH |
345 | { "mach", 'M', 1, 0, 0 }, |
346 | { "dbr", 'd', 0, 0, 0 }, | |
61098249 RH |
347 | }; |
348 | ||
e25a75e6 AJ |
349 | static int open_dump_file (enum dump_file_index, tree); |
350 | static void close_dump_file (enum dump_file_index, | |
351 | void (*) (FILE *, rtx), rtx); | |
61098249 RH |
352 | |
353 | /* Other flags saying which kinds of debugging dump have been requested. */ | |
354 | ||
355 | int rtl_dump_and_exit; | |
356 | int flag_print_asm_name; | |
735a0e33 | 357 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
358 | |
359 | /* Name for output file of assembly code, specified with -o. */ | |
360 | ||
d185d268 | 361 | const char *asm_file_name; |
4291d9c8 RS |
362 | |
363 | /* Type(s) of debugging information we are producing (if any). | |
364 | See flags.h for the definitions of the different possible | |
365 | types of debugging information. */ | |
366 | enum debug_info_type write_symbols = NO_DEBUG; | |
367 | ||
368 | /* Level of debugging information we are producing. See flags.h | |
369 | for the definitions of the different possible levels. */ | |
370 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
371 | ||
a53d0bcc RS |
372 | /* Nonzero means use GNU-only extensions in the generated symbolic |
373 | debugging information. */ | |
374 | /* Currently, this only has an effect when write_symbols is set to | |
375 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
376 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
377 | |
378 | /* Nonzero means do optimizations. -O. | |
379 | Particular numeric values stand for particular amounts of optimization; | |
380 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
381 | ones are not controlled directly by this variable. Instead, they are | |
382 | controlled by individual `flag_...' variables that are defaulted | |
383 | based on this variable. */ | |
384 | ||
385 | int optimize = 0; | |
386 | ||
c6aded7c | 387 | /* Nonzero means optimize for size. -Os. |
0e9e1e0a KH |
388 | The only valid values are zero and nonzero. When optimize_size is |
389 | nonzero, optimize defaults to 2, but certain individual code | |
c6aded7c AG |
390 | bloating optimizations are disabled. */ |
391 | ||
392 | int optimize_size = 0; | |
393 | ||
00262c8a ML |
394 | /* The FUNCTION_DECL for the function currently being compiled, |
395 | or 0 if between functions. */ | |
396 | tree current_function_decl; | |
397 | ||
398 | /* Set to the FUNC_BEGIN label of the current function, or NULL_TREE | |
399 | if none. */ | |
400 | tree current_function_func_begin_label; | |
401 | ||
881c6935 JM |
402 | /* Nonzero if doing dwarf2 duplicate elimination. */ |
403 | ||
404 | int flag_eliminate_dwarf2_dups = 0; | |
405 | ||
73c68f61 SS |
406 | /* Nonzero if doing unused type elimination. */ |
407 | ||
9552a3e3 | 408 | int flag_eliminate_unused_debug_types = 1; |
73c68f61 | 409 | |
4291d9c8 RS |
410 | /* Nonzero if generating code to do profiling. */ |
411 | ||
412 | int profile_flag = 0; | |
413 | ||
0d332add DE |
414 | /* Nonzero if generating code to profile program flow graph arcs. */ |
415 | ||
416 | int profile_arc_flag = 0; | |
417 | ||
418 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
419 | ||
420 | int flag_test_coverage = 0; | |
421 | ||
422 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
423 | ||
424 | int flag_branch_probabilities = 0; | |
425 | ||
854a97f0 | 426 | /* Nonzero if basic blocks should be reordered. */ |
11bdd2ae SC |
427 | |
428 | int flag_reorder_blocks = 0; | |
429 | ||
194734e9 JH |
430 | /* Nonzero if functions should be reordered. */ |
431 | ||
432 | int flag_reorder_functions = 0; | |
433 | ||
854a97f0 | 434 | /* Nonzero if registers should be renamed. */ |
7b82b5da SC |
435 | |
436 | int flag_rename_registers = 0; | |
8582c27b | 437 | int flag_cprop_registers = 0; |
7b82b5da | 438 | |
4291d9c8 RS |
439 | /* Nonzero for -pedantic switch: warn about anything |
440 | that standard spec forbids. */ | |
441 | ||
442 | int pedantic = 0; | |
443 | ||
444 | /* Temporarily suppress certain warnings. | |
445 | This is set while reading code from a system header file. */ | |
446 | ||
447 | int in_system_header = 0; | |
448 | ||
fba0bfd4 | 449 | /* Don't print functions as they are compiled. -quiet. */ |
4291d9c8 RS |
450 | |
451 | int quiet_flag = 0; | |
fba0bfd4 ZW |
452 | |
453 | /* Print times taken by the various passes. -ftime-report. */ | |
454 | ||
09b04f2d | 455 | static int time_report = 0; |
fba0bfd4 ZW |
456 | |
457 | /* Print memory still in use at end of compilation (which may have little | |
458 | to do with peak memory consumption). -fmem-report. */ | |
459 | ||
460 | int mem_report = 0; | |
461 | ||
272d0bee | 462 | /* Nonzero means to collect statistics which might be expensive |
0e5921e8 ZW |
463 | and to print them when we are done. */ |
464 | int flag_detailed_statistics = 0; | |
465 | ||
4291d9c8 RS |
466 | /* -f flags. */ |
467 | ||
468 | /* Nonzero means `char' should be signed. */ | |
469 | ||
470 | int flag_signed_char; | |
471 | ||
472 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
473 | ||
474 | int flag_short_enums; | |
475 | ||
476 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
477 | be saved across function calls, if that produces overall better code. | |
478 | Optional now, so people can test it. */ | |
479 | ||
480 | #ifdef DEFAULT_CALLER_SAVES | |
481 | int flag_caller_saves = 1; | |
482 | #else | |
483 | int flag_caller_saves = 0; | |
484 | #endif | |
485 | ||
958ec8ca JW |
486 | /* Nonzero if structures and unions should be returned in memory. |
487 | ||
488 | This should only be defined if compatibility with another compiler or | |
489 | with an ABI is needed, because it results in slower code. */ | |
490 | ||
491 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
492 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
493 | #endif | |
494 | ||
4291d9c8 RS |
495 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
496 | ||
958ec8ca | 497 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
498 | |
499 | /* Nonzero for -fforce-mem: load memory value into a register | |
500 | before arithmetic on it. This makes better cse but slower compilation. */ | |
501 | ||
502 | int flag_force_mem = 0; | |
503 | ||
504 | /* Nonzero for -fforce-addr: load memory address into a register before | |
505 | reference to memory. This makes better cse but slower compilation. */ | |
506 | ||
507 | int flag_force_addr = 0; | |
508 | ||
509 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
510 | instead save them up to pop many calls' args with one insns. */ | |
511 | ||
6731a3e3 | 512 | int flag_defer_pop = 0; |
4291d9c8 RS |
513 | |
514 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
515 | in extended-precision registers. */ | |
516 | ||
517 | int flag_float_store = 0; | |
518 | ||
519 | /* Nonzero for -fcse-follow-jumps: | |
520 | have cse follow jumps to do a more extensive job. */ | |
521 | ||
522 | int flag_cse_follow_jumps; | |
523 | ||
8b3686ed RK |
524 | /* Nonzero for -fcse-skip-blocks: |
525 | have cse follow a branch around a block. */ | |
526 | int flag_cse_skip_blocks; | |
527 | ||
4291d9c8 RS |
528 | /* Nonzero for -fexpensive-optimizations: |
529 | perform miscellaneous relatively-expensive optimizations. */ | |
530 | int flag_expensive_optimizations; | |
531 | ||
532 | /* Nonzero for -fthread-jumps: | |
533 | have jump optimize output of loop. */ | |
534 | ||
535 | int flag_thread_jumps; | |
536 | ||
537 | /* Nonzero enables strength-reduction in loop.c. */ | |
538 | ||
539 | int flag_strength_reduce = 0; | |
540 | ||
541 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
542 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
543 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
544 | unrolled. */ | |
545 | ||
b17d5d7c | 546 | int flag_old_unroll_loops; |
4291d9c8 RS |
547 | |
548 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
549 | This is generally not a win. */ | |
550 | ||
b17d5d7c ZD |
551 | int flag_old_unroll_all_loops; |
552 | ||
553 | /* Enables unrolling of simple loops in loop-unroll.c. */ | |
554 | int flag_unroll_loops; | |
555 | ||
556 | /* Enables unrolling of all loops in loop-unroll.c. */ | |
4291d9c8 RS |
557 | int flag_unroll_all_loops; |
558 | ||
b17d5d7c ZD |
559 | /* Nonzero enables loop peeling. */ |
560 | int flag_peel_loops; | |
561 | ||
617b465c ZD |
562 | /* Nonzero enables loop unswitching. */ |
563 | int flag_unswitch_loops; | |
564 | ||
0dd0e980 JH |
565 | /* Nonzero enables prefetch optimizations for arrays in loops. */ |
566 | ||
567 | int flag_prefetch_loop_arrays; | |
568 | ||
e5eb27e5 | 569 | /* Nonzero forces all invariant computations in loops to be moved |
854a97f0 | 570 | outside the loop. */ |
e5eb27e5 JL |
571 | |
572 | int flag_move_all_movables = 0; | |
573 | ||
574 | /* Nonzero forces all general induction variables in loops to be | |
854a97f0 | 575 | strength reduced. */ |
e5eb27e5 JL |
576 | |
577 | int flag_reduce_all_givs = 0; | |
578 | ||
9ec36da5 JL |
579 | /* Nonzero to perform full register move optimization passes. This is the |
580 | default for -O2. */ | |
581 | ||
582 | int flag_regmove = 0; | |
583 | ||
4291d9c8 RS |
584 | /* Nonzero for -fwritable-strings: |
585 | store string constants in data segment and don't uniquize them. */ | |
586 | ||
587 | int flag_writable_strings = 0; | |
588 | ||
589 | /* Nonzero means don't put addresses of constant functions in registers. | |
590 | Used for compiling the Unix kernel, where strange substitutions are | |
591 | done on the assembly output. */ | |
592 | ||
593 | int flag_no_function_cse = 0; | |
594 | ||
595 | /* Nonzero for -fomit-frame-pointer: | |
596 | don't make a frame pointer in simple functions that don't require one. */ | |
597 | ||
598 | int flag_omit_frame_pointer = 0; | |
599 | ||
cf440348 JL |
600 | /* Nonzero means place each function into its own section on those platforms |
601 | which support arbitrary section names and unlimited numbers of sections. */ | |
602 | ||
603 | int flag_function_sections = 0; | |
604 | ||
fd868572 | 605 | /* ... and similar for data. */ |
854a97f0 | 606 | |
fd868572 CM |
607 | int flag_data_sections = 0; |
608 | ||
4291d9c8 RS |
609 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
610 | ||
611 | int flag_no_peephole = 0; | |
612 | ||
db8cb48e JH |
613 | /* Nonzero allows GCC to optimize sibling and tail recursive calls. */ |
614 | ||
615 | int flag_optimize_sibling_calls = 0; | |
616 | ||
41af162c | 617 | /* Nonzero means the front end generally wants `errno' maintained by math |
de6c5979 | 618 | operations, like built-in SQRT. */ |
41af162c CB |
619 | |
620 | int flag_errno_math = 1; | |
621 | ||
de6c5979 BL |
622 | /* Nonzero means that unsafe floating-point math optimizations are allowed |
623 | for the sake of speed. IEEE compliance is not guaranteed, and operations | |
624 | are allowed to assume that their arguments and results are "normal" | |
625 | (e.g., nonnegative for SQRT). */ | |
626 | ||
627 | int flag_unsafe_math_optimizations = 0; | |
628 | ||
2e8f2e8f TM |
629 | /* Nonzero means that no NaNs or +-Infs are expected. */ |
630 | ||
631 | int flag_finite_math_only = 0; | |
632 | ||
de6c5979 BL |
633 | /* Zero means that floating-point math operations cannot generate a |
634 | (user-visible) trap. This is the case, for example, in nonstop | |
52bfebf0 | 635 | IEEE 754 arithmetic. Trapping conditions include division by zero, |
26182e15 | 636 | overflow, underflow, invalid and inexact, but does not include |
52bfebf0 | 637 | operations on signaling NaNs (see below). */ |
de6c5979 BL |
638 | |
639 | int flag_trapping_math = 1; | |
640 | ||
52bfebf0 RS |
641 | /* Nonzero means disable transformations observable by signaling NaNs. |
642 | This option implies that any operation on a IEEE signaling NaN can | |
643 | generate a (user-visible) trap. */ | |
644 | ||
645 | int flag_signaling_nans = 0; | |
646 | ||
c64f913e CB |
647 | /* 0 means straightforward implementation of complex divide acceptable. |
648 | 1 means wide ranges of inputs must work for complex divide. | |
526aba28 | 649 | 2 means C99-like requirements for complex divide (not yet implemented). */ |
c64f913e CB |
650 | |
651 | int flag_complex_divide_method = 0; | |
652 | ||
4291d9c8 RS |
653 | /* Nonzero means just do syntax checking; don't output anything. */ |
654 | ||
655 | int flag_syntax_only = 0; | |
656 | ||
96327cdc JH |
657 | /* Nonzero means perform loop optimizer. */ |
658 | ||
659 | static int flag_loop_optimize; | |
660 | ||
661 | /* Nonzero means perform crossjumping. */ | |
662 | ||
663 | static int flag_crossjumping; | |
664 | ||
2c4b77f3 JH |
665 | /* Nonzero means perform if conversion. */ |
666 | ||
667 | static int flag_if_conversion; | |
668 | ||
669 | /* Nonzero means perform if conversion after reload. */ | |
670 | ||
671 | static int flag_if_conversion2; | |
672 | ||
b6d24183 JL |
673 | /* Nonzero means to use global dataflow analysis to eliminate |
674 | useless null pointer tests. */ | |
675 | ||
676 | static int flag_delete_null_pointer_checks; | |
677 | ||
34ee7f82 RS |
678 | /* Nonzero means perform global CSE. */ |
679 | ||
680 | int flag_gcse = 0; | |
681 | ||
a13d4ebf AM |
682 | /* Nonzero means to do the enhanced load motion during gcse, which trys |
683 | to hoist loads by not killing them when a store to the same location | |
684 | is seen. */ | |
685 | ||
686 | int flag_gcse_lm = 1; | |
687 | ||
688 | /* Nonzero means to perform store motion after gcse, which will try to | |
689 | move stores closer to the exit block. Its not very effective without | |
690 | flag_gcse_lm. */ | |
691 | ||
692 | int flag_gcse_sm = 1; | |
693 | ||
fe3ad572 SC |
694 | /* Perform target register optimization before prologue / epilogue |
695 | threading. */ | |
696 | ||
697 | int flag_branch_target_load_optimize = 0; | |
698 | ||
699 | /* Perform target register optimization after prologue / epilogue | |
700 | threading and jump2. */ | |
701 | ||
702 | int flag_branch_target_load_optimize2 = 0; | |
703 | ||
4291d9c8 RS |
704 | /* Nonzero means to rerun cse after loop optimization. This increases |
705 | compilation time about 20% and picks up a few more common expressions. */ | |
706 | ||
707 | static int flag_rerun_cse_after_loop; | |
708 | ||
6d6d0fa0 JL |
709 | /* Nonzero means to run loop optimizations twice. */ |
710 | ||
64fde701 | 711 | int flag_rerun_loop_opt; |
6d6d0fa0 | 712 | |
4291d9c8 RS |
713 | /* Nonzero for -finline-functions: ok to inline functions that look like |
714 | good inline candidates. */ | |
715 | ||
716 | int flag_inline_functions; | |
717 | ||
718 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 719 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
720 | purposes. */ |
721 | ||
722 | int flag_keep_inline_functions; | |
723 | ||
fadb3bc9 | 724 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 | 725 | |
b0148884 | 726 | int flag_no_inline = 2; |
4291d9c8 | 727 | |
2cb921f4 AH |
728 | /* Nonzero means that we don't want inlining by virtue of -fno-inline, |
729 | not just because the tree inliner turned us off. */ | |
730 | ||
b0148884 | 731 | int flag_really_no_inline = 2; |
2cb921f4 | 732 | |
fbe912dd BK |
733 | /* Nonzero means that we should emit static const variables |
734 | regardless of whether or not optimization is turned on. */ | |
735 | ||
736 | int flag_keep_static_consts = 1; | |
737 | ||
4291d9c8 RS |
738 | /* Nonzero means we should be saving declaration info into a .X file. */ |
739 | ||
740 | int flag_gen_aux_info = 0; | |
741 | ||
f246a305 RS |
742 | /* Specified name of aux-info file. */ |
743 | ||
d185d268 | 744 | const char *aux_info_file_name; |
f246a305 | 745 | |
4291d9c8 RS |
746 | /* Nonzero means make the text shared if supported. */ |
747 | ||
748 | int flag_shared_data; | |
749 | ||
750 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
751 | ||
752 | int flag_delayed_branch; | |
753 | ||
754 | /* Nonzero if we are compiling pure (sharable) code. | |
3d78f2e9 RH |
755 | Value is 1 if we are doing "small" pic; value is 2 if we're doing |
756 | "large" pic. */ | |
4291d9c8 RS |
757 | |
758 | int flag_pic; | |
759 | ||
24a4dd31 JJ |
760 | /* Nonzero if we are compiling position independent code for executable. |
761 | The value is 1 if we are doing "small" pic; value is 2 if we're doing | |
762 | "large" pic. */ | |
763 | ||
764 | int flag_pie; | |
765 | ||
766 | /* Nonzero if we are compiling code for a shared library, zero for | |
767 | executable. */ | |
768 | ||
769 | int flag_shlib; | |
770 | ||
3d78f2e9 RH |
771 | /* Set to the default thread-local storage (tls) model to use. */ |
772 | ||
755ac5d4 | 773 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
3d78f2e9 | 774 | |
3d195391 MS |
775 | /* Nonzero means generate extra code for exception handling and enable |
776 | exception handling. */ | |
777 | ||
b53beeb2 | 778 | int flag_exceptions; |
3d195391 | 779 | |
854a97f0 | 780 | /* Nonzero means generate frame unwind info table when supported. */ |
14a774a9 RK |
781 | |
782 | int flag_unwind_tables = 0; | |
783 | ||
b932f770 JH |
784 | /* Nonzero means generate frame unwind info table exact at each insn boundary */ |
785 | ||
786 | int flag_asynchronous_unwind_tables = 0; | |
787 | ||
2786cbad | 788 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 789 | by default. */ |
4291d9c8 RS |
790 | |
791 | int flag_no_common; | |
792 | ||
4291d9c8 RS |
793 | /* Nonzero means change certain warnings into errors. |
794 | Usually these are warnings about failure to conform to some standard. */ | |
795 | ||
796 | int flag_pedantic_errors = 0; | |
797 | ||
798 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
799 | local_alloc). | |
800 | flag_schedule_insns_after_reload means schedule insns after | |
801 | global_alloc. */ | |
802 | ||
803 | int flag_schedule_insns = 0; | |
804 | int flag_schedule_insns_after_reload = 0; | |
805 | ||
b9422b69 JH |
806 | /* When flag_schedule_insns_after_reload is set, use EBB scheduler. */ |
807 | int flag_sched2_use_superblocks = 0; | |
808 | ||
809 | /* When flag_schedule_insns_after_reload is set, construct traces and EBB | |
810 | scheduler. */ | |
811 | int flag_sched2_use_traces = 0; | |
812 | ||
8c660648 JL |
813 | /* The following flags have effect only for scheduling before register |
814 | allocation: | |
815 | ||
14b493d6 | 816 | flag_schedule_interblock means schedule insns across basic blocks. |
8c660648 JL |
817 | flag_schedule_speculative means allow speculative motion of non-load insns. |
818 | flag_schedule_speculative_load means allow speculative motion of some | |
819 | load insns. | |
820 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 821 | load insns. */ |
8c660648 JL |
822 | |
823 | int flag_schedule_interblock = 1; | |
824 | int flag_schedule_speculative = 1; | |
825 | int flag_schedule_speculative_load = 0; | |
826 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 | 827 | |
46d3a873 CC |
828 | int flag_single_precision_constant; |
829 | ||
5527bf14 | 830 | /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple |
854a97f0 | 831 | by a cheaper branch on a count register. */ |
5527bf14 | 832 | int flag_branch_on_count_reg = 1; |
8c660648 | 833 | |
4291d9c8 | 834 | /* -finhibit-size-directive inhibits output of .size for ELF. |
854a97f0 | 835 | This is used only for compiling crtstuff.c, |
4291d9c8 RS |
836 | and it may be extended to other effects |
837 | needed for crtstuff.c on other systems. */ | |
838 | int flag_inhibit_size_directive = 0; | |
839 | ||
9a631e8e RS |
840 | /* -fverbose-asm causes extra commentary information to be produced in |
841 | the generated assembly code (to make it more readable). This option | |
842 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 843 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 844 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
845 | to be omitted and is useful when comparing two assembler files. */ |
846 | ||
c85f7c16 | 847 | int flag_verbose_asm = 0; |
9a631e8e | 848 | |
3d5cdd42 DE |
849 | /* -dA causes debug commentary information to be produced in |
850 | the generated assembly code (to make it more readable). This option | |
851 | is generally only of use to those who actually need to read the | |
852 | generated assembly code (perhaps while debugging the compiler itself). | |
853 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
854 | to be a catchall for printing debug information in the assembler file. */ | |
855 | ||
856 | int flag_debug_asm = 0; | |
9a631e8e | 857 | |
c349e40b SC |
858 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
859 | ||
860 | int flag_dump_rtl_in_asm = 0; | |
861 | ||
4291d9c8 | 862 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
863 | (Or, more generally, a linker that handles initializations.) |
864 | -fno-gnu-linker says that collect2 will be used. */ | |
865 | #ifdef USE_COLLECT2 | |
866 | int flag_gnu_linker = 0; | |
867 | #else | |
4291d9c8 | 868 | int flag_gnu_linker = 1; |
d68c507d | 869 | #endif |
4291d9c8 | 870 | |
27b41650 KG |
871 | /* Nonzero means put zero initialized data in the bss section. */ |
872 | int flag_zero_initialized_in_bss = 1; | |
873 | ||
d9d4fb43 AS |
874 | /* Enable SSA. */ |
875 | int flag_ssa = 0; | |
876 | ||
0b47e4c1 JL |
877 | /* Enable ssa conditional constant propagation. */ |
878 | int flag_ssa_ccp = 0; | |
879 | ||
880 | /* Enable ssa aggressive dead code elimination. */ | |
62d285ff | 881 | int flag_ssa_dce = 0; |
b53978a3 | 882 | |
854a97f0 | 883 | /* Tag all structures with __attribute__(packed). */ |
566cdc73 MM |
884 | int flag_pack_struct = 0; |
885 | ||
bd83d0ac RK |
886 | /* Emit code to check for stack overflow; also may cause large objects |
887 | to be allocated dynamically. */ | |
888 | int flag_stack_check; | |
889 | ||
a157febd GK |
890 | /* When non-NULL, indicates that whenever space is allocated on the |
891 | stack, the resulting stack pointer must not pass this | |
892 | address---that is, for stacks that grow downward, the stack pointer | |
893 | must always be greater than or equal to this address; for stacks | |
894 | that grow upward, the stack pointer must be less than this address. | |
895 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
896 | the support provided depends on the backend. */ | |
897 | rtx stack_limit_rtx; | |
898 | ||
9ae8ffe7 JL |
899 | /* 0 if pointer arguments may alias each other. True in C. |
900 | 1 if pointer arguments may not alias each other but may alias | |
901 | global variables. | |
902 | 2 if pointer arguments may not alias each other and may not | |
903 | alias global variables. True in Fortran. | |
904 | This defaults to 0 for C. */ | |
905 | int flag_argument_noalias = 0; | |
906 | ||
41472af8 MM |
907 | /* Nonzero if we should do (language-dependent) alias analysis. |
908 | Typically, this analysis will assume that expressions of certain | |
909 | types do not alias expressions of certain other types. Only used | |
910 | if alias analysis (in general) is enabled. */ | |
911 | int flag_strict_aliasing = 0; | |
912 | ||
07417085 KR |
913 | /* Instrument functions with calls at entry and exit, for profiling. */ |
914 | int flag_instrument_function_entry_exit = 0; | |
915 | ||
be163a70 ZW |
916 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
917 | On SVR4 targets, it also controls whether or not to emit a | |
918 | string identifying the compiler. */ | |
919 | ||
920 | int flag_no_ident = 0; | |
b8468bc7 | 921 | |
854a97f0 | 922 | /* This will perform a peephole pass before sched2. */ |
ede7cd44 RH |
923 | int flag_peephole2 = 0; |
924 | ||
3ff51205 AH |
925 | /* This will try to guess branch probabilities. */ |
926 | int flag_guess_branch_prob = 0; | |
927 | ||
a8aa7975 | 928 | /* -fcheck-bounds causes gcc to generate array bounds checks. |
e03b7153 | 929 | For C, C++, ObjC: defaults to off. |
a8aa7975 | 930 | For Java: defaults to on. |
e03b7153 | 931 | For Fortran: defaults to off. */ |
a8aa7975 GM |
932 | int flag_bounds_check = 0; |
933 | ||
201556f0 JJ |
934 | /* This will attempt to merge constant section constants, if 1 only |
935 | string constants and constants from constant pool, if 2 also constant | |
936 | variables. */ | |
937 | int flag_merge_constants = 1; | |
938 | ||
673b5311 MM |
939 | /* If one, renumber instruction UIDs to reduce the number of |
940 | unused UIDs if there are a lot of instructions. If greater than | |
941 | one, unconditionally renumber instruction UIDs. */ | |
942 | int flag_renumber_insns = 1; | |
943 | ||
ed8d2920 MM |
944 | /* If nonzero, use the graph coloring register allocator. */ |
945 | int flag_new_regalloc = 0; | |
946 | ||
5c856b23 JH |
947 | /* Nonzero if we perform superblock formation. */ |
948 | ||
949 | int flag_tracer = 0; | |
950 | ||
e72fcfe8 JH |
951 | /* Nonzero if we perform whole unit at a time compilation. */ |
952 | ||
953 | int flag_unit_at_a_time = 0; | |
954 | ||
854a97f0 KH |
955 | /* Values of the -falign-* flags: how much to align labels in code. |
956 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
957 | For each variable, there is an _log variant which is the power |
958 | of two not less than the variable, for .align output. */ | |
959 | ||
960 | int align_loops; | |
961 | int align_loops_log; | |
2cca7283 | 962 | int align_loops_max_skip; |
efa3896a GK |
963 | int align_jumps; |
964 | int align_jumps_log; | |
2cca7283 | 965 | int align_jumps_max_skip; |
efa3896a GK |
966 | int align_labels; |
967 | int align_labels_log; | |
2cca7283 | 968 | int align_labels_max_skip; |
efa3896a GK |
969 | int align_functions; |
970 | int align_functions_log; | |
971 | ||
f963b5d9 RS |
972 | /* Like align_functions_log above, but used by front-ends to force the |
973 | minimum function alignment. Zero means no alignment is forced. */ | |
974 | int force_align_functions_log; | |
975 | ||
b8468bc7 | 976 | /* Table of supported debugging formats. */ |
8b60264b | 977 | static const struct |
b8468bc7 | 978 | { |
8b60264b | 979 | const char *const arg; |
b8468bc7 NC |
980 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
981 | constant expression, we use NO_DEBUG in its place. */ | |
8b60264b KG |
982 | const enum debug_info_type debug_type; |
983 | const int use_extensions_p; | |
984 | const char *const description; | |
b8468bc7 NC |
985 | } *da, |
986 | debug_args[] = | |
987 | { | |
39dd8003 | 988 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
a6371940 ZW |
989 | N_("Generate debugging info in default format") }, |
990 | { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") }, | |
b8468bc7 | 991 | #ifdef DBX_DEBUGGING_INFO |
a6371940 ZW |
992 | { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") }, |
993 | { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") }, | |
b8468bc7 NC |
994 | #endif |
995 | #ifdef DWARF_DEBUGGING_INFO | |
a6371940 | 996 | { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") }, |
39dd8003 | 997 | { "dwarf+", DWARF_DEBUG, 1, |
a6371940 | 998 | N_("Generate extended DWARF-1 format debug info") }, |
b8468bc7 NC |
999 | #endif |
1000 | #ifdef DWARF2_DEBUGGING_INFO | |
a6371940 | 1001 | { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") }, |
b8468bc7 NC |
1002 | #endif |
1003 | #ifdef XCOFF_DEBUGGING_INFO | |
a6371940 ZW |
1004 | { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") }, |
1005 | { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") }, | |
b8468bc7 NC |
1006 | #endif |
1007 | #ifdef SDB_DEBUGGING_INFO | |
a6371940 | 1008 | { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") }, |
1682dbb1 DR |
1009 | #endif |
1010 | #ifdef VMS_DEBUGGING_INFO | |
1011 | { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") }, | |
b8468bc7 | 1012 | #endif |
c84e2712 | 1013 | { 0, 0, 0, 0 } |
b8468bc7 NC |
1014 | }; |
1015 | ||
1016 | typedef struct | |
1017 | { | |
c083a819 KG |
1018 | const char *const string; |
1019 | int *const variable; | |
1020 | const int on_value; | |
1021 | const char *const description; | |
b8468bc7 NC |
1022 | } |
1023 | lang_independent_options; | |
1024 | ||
4fa26a60 | 1025 | /* Nonzero if signed arithmetic overflow should trap. */ |
91ce572a CC |
1026 | int flag_trapv = 0; |
1027 | ||
4fa26a60 RS |
1028 | /* Nonzero if signed arithmetic overflow should wrap around. */ |
1029 | int flag_wrapv = 0; | |
1030 | ||
19283265 RH |
1031 | /* Add or remove a leading underscore from user symbols. */ |
1032 | int flag_leading_underscore = -1; | |
1033 | ||
1034 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 1035 | const char *user_label_prefix; |
19283265 | 1036 | |
c6d9a88c MM |
1037 | static const param_info lang_independent_params[] = { |
1038 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \ | |
1c4c47db | 1039 | { OPTION, DEFAULT, HELP }, |
c6d9a88c MM |
1040 | #include "params.def" |
1041 | #undef DEFPARAM | |
1c4c47db | 1042 | { NULL, 0, NULL } |
c6d9a88c MM |
1043 | }; |
1044 | ||
4291d9c8 RS |
1045 | /* Table of language-independent -f options. |
1046 | STRING is the option name. VARIABLE is the address of the variable. | |
1047 | ON_VALUE is the value to store in VARIABLE | |
1048 | if `-fSTRING' is seen as an option. | |
1049 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
1050 | ||
c083a819 | 1051 | static const lang_independent_options f_options[] = |
4291d9c8 | 1052 | { |
21c7361e | 1053 | {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1, |
a6371940 | 1054 | N_("Perform DWARF2 duplicate elimination") }, |
73c68f61 SS |
1055 | {"eliminate-unused-debug-types", &flag_eliminate_unused_debug_types, 1, |
1056 | N_("Perform unused type elimination in debug info") }, | |
b8468bc7 | 1057 | {"float-store", &flag_float_store, 1, |
a6371940 | 1058 | N_("Do not store floats in registers") }, |
b8468bc7 | 1059 | {"defer-pop", &flag_defer_pop, 1, |
a6371940 | 1060 | N_("Defer popping functions args from stack until later") }, |
b8468bc7 | 1061 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, |
a6371940 | 1062 | N_("When possible do not generate stack frames") }, |
db8cb48e | 1063 | {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1, |
a6371940 | 1064 | N_("Optimize sibling and tail recursive calls") }, |
5c856b23 JH |
1065 | {"tracer", &flag_tracer, 1, |
1066 | N_("Perform superblock formation via tail duplication") }, | |
e72fcfe8 JH |
1067 | {"unit-at-a-time", &flag_unit_at_a_time, 1, |
1068 | N_("Compile whole compilation unit at a time") }, | |
b8468bc7 | 1069 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, |
a6371940 | 1070 | N_("When running CSE, follow jumps to their targets") }, |
b8468bc7 | 1071 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, |
a6371940 | 1072 | N_("When running CSE, follow conditional jumps") }, |
b8468bc7 | 1073 | {"expensive-optimizations", &flag_expensive_optimizations, 1, |
1737c953 | 1074 | N_("Perform a number of minor, expensive optimizations") }, |
b8468bc7 | 1075 | {"thread-jumps", &flag_thread_jumps, 1, |
1737c953 | 1076 | N_("Perform jump threading optimizations") }, |
b8468bc7 | 1077 | {"strength-reduce", &flag_strength_reduce, 1, |
1737c953 | 1078 | N_("Perform strength reduction optimizations") }, |
b8468bc7 | 1079 | {"unroll-loops", &flag_unroll_loops, 1, |
a6371940 | 1080 | N_("Perform loop unrolling when iteration count is known") }, |
b8468bc7 | 1081 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
a6371940 | 1082 | N_("Perform loop unrolling for all loops") }, |
b17d5d7c ZD |
1083 | {"old-unroll-loops", &flag_old_unroll_loops, 1, |
1084 | N_("Perform loop unrolling when iteration count is known") }, | |
1085 | {"old-unroll-all-loops", &flag_old_unroll_all_loops, 1, | |
1086 | N_("Perform loop unrolling for all loops") }, | |
1087 | {"peel-loops", &flag_peel_loops, 1, | |
1088 | N_("Perform loop peeling") }, | |
617b465c ZD |
1089 | {"unswitch-loops", &flag_unswitch_loops, 1, |
1090 | N_("Perform loop unswitching") }, | |
0dd0e980 JH |
1091 | {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1, |
1092 | N_("Generate prefetch instructions, if available, for arrays in loops") }, | |
b8468bc7 | 1093 | {"move-all-movables", &flag_move_all_movables, 1, |
a6371940 | 1094 | N_("Force all loop invariant computations out of loops") }, |
b8468bc7 | 1095 | {"reduce-all-givs", &flag_reduce_all_givs, 1, |
a6371940 | 1096 | N_("Strength reduce all loop general induction variables") }, |
b8468bc7 | 1097 | {"writable-strings", &flag_writable_strings, 1, |
a6371940 | 1098 | N_("Store strings in writable data section") }, |
b8468bc7 | 1099 | {"peephole", &flag_no_peephole, 0, |
1737c953 | 1100 | N_("Enable machine specific peephole optimizations") }, |
b8468bc7 | 1101 | {"force-mem", &flag_force_mem, 1, |
a6371940 | 1102 | N_("Copy memory operands into registers before using") }, |
b8468bc7 | 1103 | {"force-addr", &flag_force_addr, 1, |
a6371940 | 1104 | N_("Copy memory address constants into regs before using") }, |
b8468bc7 | 1105 | {"function-cse", &flag_no_function_cse, 0, |
a6371940 | 1106 | N_("Allow function addresses to be held in registers") }, |
b8468bc7 | 1107 | {"inline-functions", &flag_inline_functions, 1, |
a6371940 | 1108 | N_("Integrate simple functions into their callers") }, |
b8468bc7 | 1109 | {"keep-inline-functions", &flag_keep_inline_functions, 1, |
a6371940 | 1110 | N_("Generate code for funcs even if they are fully inlined") }, |
b8468bc7 | 1111 | {"inline", &flag_no_inline, 0, |
a6371940 | 1112 | N_("Pay attention to the 'inline' keyword") }, |
b8468bc7 | 1113 | {"keep-static-consts", &flag_keep_static_consts, 1, |
a6371940 | 1114 | N_("Emit static const variables even if they are not used") }, |
b8468bc7 | 1115 | {"syntax-only", &flag_syntax_only, 1, |
a6371940 | 1116 | N_("Check for syntax errors, then stop") }, |
b8468bc7 | 1117 | {"shared-data", &flag_shared_data, 1, |
a6371940 | 1118 | N_("Mark data as shared rather than private") }, |
b8468bc7 | 1119 | {"caller-saves", &flag_caller_saves, 1, |
a6371940 | 1120 | N_("Enable saving registers around function calls") }, |
b8468bc7 | 1121 | {"pcc-struct-return", &flag_pcc_struct_return, 1, |
a6371940 | 1122 | N_("Return 'short' aggregates in memory, not registers") }, |
b8468bc7 | 1123 | {"reg-struct-return", &flag_pcc_struct_return, 0, |
a6371940 | 1124 | N_("Return 'short' aggregates in registers") }, |
b8468bc7 | 1125 | {"delayed-branch", &flag_delayed_branch, 1, |
a6371940 | 1126 | N_("Attempt to fill delay slots of branch instructions") }, |
b8468bc7 | 1127 | {"gcse", &flag_gcse, 1, |
a6371940 | 1128 | N_("Perform the global common subexpression elimination") }, |
a13d4ebf | 1129 | {"gcse-lm", &flag_gcse_lm, 1, |
a6371940 | 1130 | N_("Perform enhanced load motion during global subexpression elimination") }, |
a13d4ebf | 1131 | {"gcse-sm", &flag_gcse_sm, 1, |
a6371940 | 1132 | N_("Perform store motion after global subexpression elimination") }, |
fe3ad572 SC |
1133 | {"branch-target-load-optimize", &flag_branch_target_load_optimize, 1, |
1134 | N_("Perform branch target load optimization before prologue / epilogue threading") }, | |
1135 | {"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 1, | |
1136 | N_("Perform branch target load optimization after prologue / epilogue threading") }, | |
96327cdc JH |
1137 | {"loop-optimize", &flag_loop_optimize, 1, |
1138 | N_("Perform the loop optimizations") }, | |
1139 | {"crossjumping", &flag_crossjumping, 1, | |
1140 | N_("Perform cross-jumping optimization") }, | |
2c4b77f3 JH |
1141 | {"if-conversion", &flag_if_conversion, 1, |
1142 | N_("Perform conversion of conditional jumps to branchless equivalents") }, | |
1143 | {"if-conversion2", &flag_if_conversion2, 1, | |
1144 | N_("Perform conversion of conditional jumps to conditional execution") }, | |
b8468bc7 | 1145 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, |
1737c953 | 1146 | N_("Run CSE pass after loop optimizations") }, |
b8468bc7 | 1147 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, |
1737c953 | 1148 | N_("Run the loop optimizer twice") }, |
b6d24183 | 1149 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1, |
a6371940 | 1150 | N_("Delete useless null pointer checks") }, |
b8468bc7 | 1151 | {"schedule-insns", &flag_schedule_insns, 1, |
a6371940 | 1152 | N_("Reschedule instructions before register allocation") }, |
b8468bc7 | 1153 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, |
a6371940 | 1154 | N_("Reschedule instructions after register allocation") }, |
b8468bc7 | 1155 | {"sched-interblock",&flag_schedule_interblock, 1, |
a6371940 | 1156 | N_("Enable scheduling across basic blocks") }, |
b8468bc7 | 1157 | {"sched-spec",&flag_schedule_speculative, 1, |
a6371940 | 1158 | N_("Allow speculative motion of non-loads") }, |
b8468bc7 | 1159 | {"sched-spec-load",&flag_schedule_speculative_load, 1, |
a6371940 | 1160 | N_("Allow speculative motion of some loads") }, |
b8468bc7 | 1161 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, |
a6371940 | 1162 | N_("Allow speculative motion of more loads") }, |
b9422b69 | 1163 | {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1, |
8e854b76 | 1164 | N_("If scheduling post reload, do superblock scheduling") }, |
b9422b69 | 1165 | {"sched2-use-traces", &flag_sched2_use_traces, 1, |
8e854b76 | 1166 | N_("If scheduling post reload, do trace scheduling") }, |
b8468bc7 | 1167 | {"branch-count-reg",&flag_branch_on_count_reg, 1, |
a6371940 | 1168 | N_("Replace add,compare,branch with branch on count reg") }, |
b8468bc7 | 1169 | {"pic", &flag_pic, 1, |
a6371940 | 1170 | N_("Generate position independent code, if possible") }, |
b8468bc7 | 1171 | {"PIC", &flag_pic, 2, ""}, |
24a4dd31 JJ |
1172 | {"pie", &flag_pie, 1, |
1173 | N_("Generate position independent code for executables, if possible") }, | |
1174 | {"PIE", &flag_pie, 2, ""}, | |
b8468bc7 | 1175 | {"exceptions", &flag_exceptions, 1, |
a6371940 | 1176 | N_("Enable exception handling") }, |
14a774a9 | 1177 | {"unwind-tables", &flag_unwind_tables, 1, |
a6371940 | 1178 | N_("Just generate unwind tables for exception handling") }, |
b932f770 JH |
1179 | {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1, |
1180 | N_("Generate unwind tables exact at each instruction boundary") }, | |
c1e9f663 | 1181 | {"non-call-exceptions", &flag_non_call_exceptions, 1, |
a6371940 | 1182 | N_("Support synchronous non-call exceptions") }, |
b8468bc7 | 1183 | {"profile-arcs", &profile_arc_flag, 1, |
a6371940 | 1184 | N_("Insert arc based program profiling code") }, |
b8468bc7 | 1185 | {"test-coverage", &flag_test_coverage, 1, |
a6371940 | 1186 | N_("Create data files needed by gcov") }, |
b8468bc7 | 1187 | {"branch-probabilities", &flag_branch_probabilities, 1, |
a6371940 | 1188 | N_("Use profiling information for branch probabilities") }, |
1034407f NC |
1189 | {"profile", &profile_flag, 1, |
1190 | N_("Enable basic program profiling code") }, | |
11bdd2ae | 1191 | {"reorder-blocks", &flag_reorder_blocks, 1, |
a6371940 | 1192 | N_("Reorder basic blocks to improve code placement") }, |
194734e9 JH |
1193 | {"reorder-functions", &flag_reorder_functions, 1, |
1194 | N_("Reorder functions to improve code placement") }, | |
7b82b5da | 1195 | {"rename-registers", &flag_rename_registers, 1, |
a6371940 | 1196 | N_("Do the register renaming optimization pass") }, |
8582c27b RH |
1197 | {"cprop-registers", &flag_cprop_registers, 1, |
1198 | N_("Do the register copy-propagation optimization pass") }, | |
b8468bc7 | 1199 | {"common", &flag_no_common, 0, |
ff7cc307 | 1200 | N_("Do not put uninitialized globals in the common section") }, |
b8468bc7 | 1201 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, |
a6371940 | 1202 | N_("Do not generate .size directives") }, |
b8468bc7 | 1203 | {"function-sections", &flag_function_sections, 1, |
a6371940 | 1204 | N_("place each function into its own section") }, |
257441db | 1205 | {"data-sections", &flag_data_sections, 1, |
a6371940 | 1206 | N_("place data items into their own section") }, |
b8468bc7 | 1207 | {"verbose-asm", &flag_verbose_asm, 1, |
8e854b76 | 1208 | N_("Add extra commentary to assembler output") }, |
b8468bc7 | 1209 | {"gnu-linker", &flag_gnu_linker, 1, |
1737c953 | 1210 | N_("Output GNU ld formatted global initializers") }, |
b8468bc7 | 1211 | {"regmove", &flag_regmove, 1, |
1737c953 | 1212 | N_("Enables a register move optimization") }, |
c84e2712 | 1213 | {"optimize-register-move", &flag_regmove, 1, |
a6371940 | 1214 | N_("Do the full regmove optimization pass") }, |
b8468bc7 | 1215 | {"pack-struct", &flag_pack_struct, 1, |
a6371940 | 1216 | N_("Pack structure members together without holes") }, |
b8468bc7 | 1217 | {"stack-check", &flag_stack_check, 1, |
a6371940 | 1218 | N_("Insert stack checking code into the program") }, |
b8468bc7 | 1219 | {"argument-alias", &flag_argument_noalias, 0, |
a6371940 | 1220 | N_("Specify that arguments may alias each other & globals") }, |
b8468bc7 | 1221 | {"argument-noalias", &flag_argument_noalias, 1, |
a6371940 | 1222 | N_("Assume arguments may alias globals but not each other") }, |
b8468bc7 | 1223 | {"argument-noalias-global", &flag_argument_noalias, 2, |
a6371940 | 1224 | N_("Assume arguments do not alias each other or globals") }, |
b8468bc7 | 1225 | {"strict-aliasing", &flag_strict_aliasing, 1, |
a6371940 | 1226 | N_("Assume strict aliasing rules apply") }, |
854a97f0 | 1227 | {"align-loops", &align_loops, 0, |
a6371940 | 1228 | N_("Align the start of loops") }, |
854a97f0 | 1229 | {"align-jumps", &align_jumps, 0, |
a6371940 | 1230 | N_("Align labels which are only reached by jumping") }, |
efa3896a | 1231 | {"align-labels", &align_labels, 0, |
a6371940 | 1232 | N_("Align all labels") }, |
efa3896a | 1233 | {"align-functions", &align_functions, 0, |
a6371940 | 1234 | N_("Align the start of functions") }, |
201556f0 | 1235 | {"merge-constants", &flag_merge_constants, 1, |
8e854b76 | 1236 | N_("Attempt to merge identical constants across compilation units") }, |
201556f0 JJ |
1237 | {"merge-all-constants", &flag_merge_constants, 2, |
1238 | N_("Attempt to merge identical constants and constant variables") }, | |
c84e2712 | 1239 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
a6371940 | 1240 | N_("Suppress output of instruction numbers and line number notes in debugging dumps") }, |
07417085 | 1241 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
a6371940 | 1242 | N_("Instrument function entry/exit with profiling calls") }, |
27b41650 KG |
1243 | {"zero-initialized-in-bss", &flag_zero_initialized_in_bss, 1, |
1244 | N_("Put zero initialized data in the bss section") }, | |
d9d4fb43 | 1245 | {"ssa", &flag_ssa, 1, |
a6371940 | 1246 | N_("Enable SSA optimizations") }, |
0b47e4c1 | 1247 | {"ssa-ccp", &flag_ssa_ccp, 1, |
eaec9b3d | 1248 | N_("Enable SSA conditional constant propagation") }, |
62d285ff JL |
1249 | {"ssa-dce", &flag_ssa_dce, 1, |
1250 | N_("Enable aggressive SSA dead code elimination") }, | |
19283265 | 1251 | {"leading-underscore", &flag_leading_underscore, 1, |
a6371940 | 1252 | N_("External symbols have a leading underscore") }, |
be163a70 | 1253 | {"ident", &flag_no_ident, 0, |
a6371940 | 1254 | N_("Process #ident directives") }, |
ede7cd44 | 1255 | { "peephole2", &flag_peephole2, 1, |
a6371940 | 1256 | N_("Enables an rtl peephole pass run before sched2") }, |
2e8f2e8f TM |
1257 | {"finite-math-only", &flag_finite_math_only, 1, |
1258 | N_("Assume no NaNs or +-Infs are generated") }, | |
3ff51205 | 1259 | { "guess-branch-probability", &flag_guess_branch_prob, 1, |
a6371940 | 1260 | N_("Enables guessing of branch probabilities") }, |
9605da8a | 1261 | {"math-errno", &flag_errno_math, 1, |
a6371940 | 1262 | N_("Set errno after built-in math functions") }, |
de6c5979 | 1263 | {"trapping-math", &flag_trapping_math, 1, |
a6371940 | 1264 | N_("Floating-point operations can trap") }, |
de6c5979 | 1265 | {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1, |
a6371940 | 1266 | N_("Allow math optimizations that may violate IEEE or ANSI standards") }, |
52bfebf0 RS |
1267 | {"signaling-nans", &flag_signaling_nans, 1, |
1268 | N_("Disable optimizations observable by IEEE signaling NaNs") }, | |
a8aa7975 | 1269 | {"bounds-check", &flag_bounds_check, 1, |
e03b7153 | 1270 | N_("Generate code to check bounds before indexing arrays") }, |
46d3a873 | 1271 | {"single-precision-constant", &flag_single_precision_constant, 1, |
a6371940 | 1272 | N_("Convert floating point constant to single precision constant") }, |
94b23dd5 | 1273 | {"time-report", &time_report, 1, |
a6371940 | 1274 | N_("Report time taken by each compiler pass at end of run") }, |
94b23dd5 | 1275 | {"mem-report", &mem_report, 1, |
a6371940 | 1276 | N_("Report on permanent memory allocation at end of run") }, |
91ce572a | 1277 | { "trapv", &flag_trapv, 1, |
4d6baafa | 1278 | N_("Trap for signed overflow in addition / subtraction / multiplication") }, |
4fa26a60 RS |
1279 | { "wrapv", &flag_wrapv, 1, |
1280 | N_("Assume signed arithmetic overflow wraps around") }, | |
ed8d2920 MM |
1281 | { "new-ra", &flag_new_regalloc, 1, |
1282 | N_("Use graph coloring register allocation.") }, | |
4291d9c8 | 1283 | }; |
b99933c7 RS |
1284 | |
1285 | /* Table of language-specific options. */ | |
1286 | ||
8b60264b | 1287 | static const struct lang_opt |
b8468bc7 | 1288 | { |
8b60264b KG |
1289 | const char *const option; |
1290 | const char *const description; | |
b8468bc7 NC |
1291 | } |
1292 | documented_lang_options[] = | |
b99933c7 | 1293 | { |
b8468bc7 NC |
1294 | /* In order not to overload the --help output, the convention |
1295 | used here is to only describe those options which are not | |
1296 | enabled by default. */ | |
1297 | ||
9cabb1d8 | 1298 | { "-ansi", |
56508306 | 1299 | N_("Compile just for ISO C90") }, |
9cabb1d8 | 1300 | { "-std= ", |
a6371940 | 1301 | N_("Determine language standard") }, |
b8468bc7 NC |
1302 | |
1303 | { "-fsigned-bitfields", "" }, | |
a6371940 | 1304 | { "-funsigned-bitfields", |
b0287a90 | 1305 | N_("Make bit-fields by unsigned by default") }, |
b8468bc7 NC |
1306 | { "-fno-signed-bitfields", "" }, |
1307 | { "-fno-unsigned-bitfields","" }, | |
9cabb1d8 | 1308 | { "-fsigned-char", |
a6371940 | 1309 | N_("Make 'char' be signed by default") }, |
9cabb1d8 | 1310 | { "-funsigned-char", |
a6371940 | 1311 | N_("Make 'char' be unsigned by default") }, |
b8468bc7 NC |
1312 | { "-fno-signed-char", "" }, |
1313 | { "-fno-unsigned-char", "" }, | |
1314 | ||
b8468bc7 | 1315 | { "-fasm", "" }, |
9cabb1d8 | 1316 | { "-fno-asm", |
1737c953 | 1317 | N_("Do not recognize the 'asm' keyword") }, |
b8468bc7 | 1318 | { "-fbuiltin", "" }, |
9cabb1d8 | 1319 | { "-fno-builtin", |
1737c953 | 1320 | N_("Do not recognize any built in functions") }, |
9cabb1d8 | 1321 | { "-fhosted", |
a6371940 | 1322 | N_("Assume normal C execution environment") }, |
b8468bc7 NC |
1323 | { "-fno-hosted", "" }, |
1324 | { "-ffreestanding", | |
a6371940 | 1325 | N_("Assume that standard libraries & main might not exist") }, |
b8468bc7 | 1326 | { "-fno-freestanding", "" }, |
9cabb1d8 | 1327 | { "-fcond-mismatch", |
a6371940 | 1328 | N_("Allow different types as args of ? operator") }, |
b8468bc7 | 1329 | { "-fno-cond-mismatch", "" }, |
9cabb1d8 | 1330 | { "-fdollars-in-identifiers", |
a6371940 | 1331 | N_("Allow the use of $ inside identifiers") }, |
b8468bc7 | 1332 | { "-fno-dollars-in-identifiers", "" }, |
3773a46b JM |
1333 | { "-fpreprocessed", "" }, |
1334 | { "-fno-preprocessed", "" }, | |
9cabb1d8 | 1335 | { "-fshort-double", |
a6371940 | 1336 | N_("Use the same size for double as for float") }, |
b8468bc7 | 1337 | { "-fno-short-double", "" }, |
9cabb1d8 | 1338 | { "-fshort-enums", |
a6371940 | 1339 | N_("Use the smallest fitting integer to hold enums") }, |
b8468bc7 | 1340 | { "-fno-short-enums", "" }, |
9cabb1d8 | 1341 | { "-fshort-wchar", |
a6371940 | 1342 | N_("Override the underlying type for wchar_t to `unsigned short'") }, |
12a39b12 | 1343 | { "-fno-short-wchar", "" }, |
b8468bc7 | 1344 | |
9cabb1d8 | 1345 | { "-Wall", |
a6371940 | 1346 | N_("Enable most warning messages") }, |
b8468bc7 | 1347 | { "-Wbad-function-cast", |
a6371940 | 1348 | N_("Warn about casting functions to incompatible types") }, |
b8468bc7 | 1349 | { "-Wno-bad-function-cast", "" }, |
74ff4629 | 1350 | { "-Wmissing-format-attribute", |
a6371940 | 1351 | N_("Warn about functions which might be candidates for format attributes") }, |
74ff4629 | 1352 | { "-Wno-missing-format-attribute", "" }, |
9cabb1d8 | 1353 | { "-Wcast-qual", |
a6371940 | 1354 | N_("Warn about casts which discard qualifiers") }, |
b8468bc7 | 1355 | { "-Wno-cast-qual", "" }, |
9cabb1d8 | 1356 | { "-Wchar-subscripts", |
a6371940 | 1357 | N_("Warn about subscripts whose type is 'char'") }, |
b8468bc7 | 1358 | { "-Wno-char-subscripts", "" }, |
9cabb1d8 | 1359 | { "-Wcomment", |
a6371940 | 1360 | N_("Warn if nested comments are detected") }, |
c84e2712 | 1361 | { "-Wno-comment", "" }, |
9cabb1d8 | 1362 | { "-Wcomments", |
a6371940 | 1363 | N_("Warn if nested comments are detected") }, |
c84e2712 | 1364 | { "-Wno-comments", "" }, |
9cabb1d8 | 1365 | { "-Wconversion", |
a6371940 | 1366 | N_("Warn about possibly confusing type conversions") }, |
b8468bc7 | 1367 | { "-Wno-conversion", "" }, |
75227a33 | 1368 | { "-Wdiv-by-zero", "" }, |
9cabb1d8 | 1369 | { "-Wno-div-by-zero", |
75227a33 | 1370 | N_("Do not warn about compile-time integer division by zero") }, |
9cabb1d8 | 1371 | { "-Wfloat-equal", |
75227a33 GK |
1372 | N_("Warn about testing equality of floating point numbers") }, |
1373 | { "-Wno-float-equal", "" }, | |
9cabb1d8 | 1374 | { "-Wformat", |
a6371940 | 1375 | N_("Warn about printf/scanf/strftime/strfmon format anomalies") }, |
b8468bc7 | 1376 | { "-Wno-format", "" }, |
4d808927 JM |
1377 | { "-Wformat-extra-args", "" }, |
1378 | { "-Wno-format-extra-args", | |
a6371940 | 1379 | N_("Don't warn about too many arguments to format functions") }, |
9cabb1d8 | 1380 | { "-Wformat-nonliteral", |
a6371940 | 1381 | N_("Warn about non-string-literal format strings") }, |
4d808927 | 1382 | { "-Wno-format-nonliteral", "" }, |
c907e684 | 1383 | { "-Wformat-security", |
a6371940 | 1384 | N_("Warn about possible security problems with format functions") }, |
c907e684 | 1385 | { "-Wno-format-security", "" }, |
75227a33 GK |
1386 | { "-Wformat-y2k", "" }, |
1387 | { "-Wno-format-y2k", | |
1388 | N_("Don't warn about strftime formats yielding 2 digit years") }, | |
b8468bc7 | 1389 | { "-Wimplicit-function-declaration", |
a6371940 | 1390 | N_("Warn about implicit function declarations") }, |
b8468bc7 NC |
1391 | { "-Wno-implicit-function-declaration", "" }, |
1392 | { "-Werror-implicit-function-declaration", "" }, | |
9cabb1d8 | 1393 | { "-Wimplicit-int", |
a6371940 | 1394 | N_("Warn when a declaration does not specify a type") }, |
b8468bc7 NC |
1395 | { "-Wno-implicit-int", "" }, |
1396 | { "-Wimplicit", "" }, | |
1397 | { "-Wno-implicit", "" }, | |
9cabb1d8 | 1398 | { "-Wimport", |
a6371940 | 1399 | N_("Warn about the use of the #import directive") }, |
b8468bc7 | 1400 | { "-Wno-import", "" }, |
223b87b6 GK |
1401 | { "-Winvalid-pch", |
1402 | N_("Warn about PCH files that are found but not used") }, | |
b8468bc7 | 1403 | { "-Wlong-long","" }, |
9cabb1d8 | 1404 | { "-Wno-long-long", |
a6371940 | 1405 | N_("Do not warn about using 'long long' when -pedantic") }, |
9cabb1d8 | 1406 | { "-Wmain", |
a6371940 | 1407 | N_("Warn about suspicious declarations of main") }, |
b8468bc7 NC |
1408 | { "-Wno-main", "" }, |
1409 | { "-Wmissing-braces", | |
1737c953 | 1410 | N_("Warn about possibly missing braces around initializers") }, |
b8468bc7 NC |
1411 | { "-Wno-missing-braces", "" }, |
1412 | { "-Wmissing-declarations", | |
a6371940 | 1413 | N_("Warn about global funcs without previous declarations") }, |
b8468bc7 | 1414 | { "-Wno-missing-declarations", "" }, |
9cabb1d8 | 1415 | { "-Wmissing-prototypes", |
a6371940 | 1416 | N_("Warn about global funcs without prototypes") }, |
b8468bc7 | 1417 | { "-Wno-missing-prototypes", "" }, |
9cabb1d8 | 1418 | { "-Wmultichar", |
a6371940 | 1419 | N_("Warn about use of multicharacter literals") }, |
b8468bc7 | 1420 | { "-Wno-multichar", "" }, |
9cabb1d8 | 1421 | { "-Wnested-externs", |
a6371940 | 1422 | N_("Warn about externs not at file scope level") }, |
b8468bc7 | 1423 | { "-Wno-nested-externs", "" }, |
9cabb1d8 | 1424 | { "-Wparentheses", |
a6371940 | 1425 | N_("Warn about possible missing parentheses") }, |
b8468bc7 | 1426 | { "-Wno-parentheses", "" }, |
9cabb1d8 | 1427 | { "-Wpointer-arith", |
a6371940 | 1428 | N_("Warn about function pointer arithmetic") }, |
b8468bc7 NC |
1429 | { "-Wno-pointer-arith", "" }, |
1430 | { "-Wredundant-decls", | |
a6371940 | 1431 | N_("Warn about multiple declarations of the same object") }, |
b8468bc7 | 1432 | { "-Wno-redundant-decls", "" }, |
75227a33 GK |
1433 | { "-Wreturn-type", |
1434 | N_("Warn whenever a function's return-type defaults to int") }, | |
1435 | { "-Wno-return-type", "" }, | |
1436 | { "-Wsequence-point", | |
1437 | N_("Warn about possible violations of sequence point rules") }, | |
1438 | { "-Wno-sequence-point", "" }, | |
9cabb1d8 | 1439 | { "-Wsign-compare", |
a6371940 | 1440 | N_("Warn about signed/unsigned comparisons") }, |
b8468bc7 | 1441 | { "-Wno-sign-compare", "" }, |
9cabb1d8 | 1442 | { "-Wstrict-prototypes", |
a6371940 | 1443 | N_("Warn about non-prototyped function decls") }, |
b8468bc7 | 1444 | { "-Wno-strict-prototypes", "" }, |
9cabb1d8 | 1445 | { "-Wtraditional", |
f458d1d5 | 1446 | N_("Warn about constructs whose meanings change in ISO C") }, |
b8468bc7 | 1447 | { "-Wno-traditional", "" }, |
9cabb1d8 | 1448 | { "-Wtrigraphs", |
a6371940 | 1449 | N_("Warn when trigraphs are encountered") }, |
b8468bc7 NC |
1450 | { "-Wno-trigraphs", "" }, |
1451 | { "-Wundef", "" }, | |
1452 | { "-Wno-undef", "" }, | |
9cabb1d8 | 1453 | { "-Wunknown-pragmas", |
75227a33 GK |
1454 | N_("Warn about unrecognized pragmas") }, |
1455 | { "-Wno-unknown-pragmas", "" }, | |
9cabb1d8 | 1456 | { "-Wwrite-strings", |
a6371940 | 1457 | N_("Mark strings as 'const char *'") }, |
b8468bc7 | 1458 | { "-Wno-write-strings", "" }, |
854a97f0 | 1459 | |
b8468bc7 | 1460 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, |
854a97f0 | 1461 | |
2772ef3e | 1462 | #include "options_.h" |
854a97f0 | 1463 | |
b99933c7 | 1464 | }; |
b8468bc7 NC |
1465 | |
1466 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1467 | and which bits in `target_switches' it should set or clear. | |
1468 | If VALUE is positive, it is bits to set. | |
1469 | If VALUE is negative, -VALUE is bits to clear. | |
1470 | (The sign bit is not used so there is no confusion.) */ | |
1471 | ||
8b60264b | 1472 | static const struct |
b8468bc7 | 1473 | { |
8b60264b KG |
1474 | const char *const name; |
1475 | const int value; | |
1476 | const char *const description; | |
b8468bc7 | 1477 | } |
9cabb1d8 | 1478 | target_switches[] = TARGET_SWITCHES; |
b8468bc7 NC |
1479 | |
1480 | /* This table is similar, but allows the switch to have a value. */ | |
1481 | ||
1482 | #ifdef TARGET_OPTIONS | |
8b60264b | 1483 | static const struct |
b8468bc7 | 1484 | { |
8b60264b KG |
1485 | const char *const prefix; |
1486 | const char **const variable; | |
1487 | const char *const description; | |
c409ea0d | 1488 | const char *const value; |
b8468bc7 | 1489 | } |
9cabb1d8 | 1490 | target_options[] = TARGET_OPTIONS; |
b8468bc7 | 1491 | #endif |
ddc9542b | 1492 | |
854a97f0 | 1493 | /* Options controlling warnings. */ |
4291d9c8 RS |
1494 | |
1495 | /* Don't print warning messages. -w. */ | |
1496 | ||
1497 | int inhibit_warnings = 0; | |
1498 | ||
317639a8 BC |
1499 | /* Don't suppress warnings from system headers. -Wsystem-headers. */ |
1500 | ||
1501 | int warn_system_headers = 0; | |
1502 | ||
65ca2d60 | 1503 | /* Print various extra warnings. -W/-Wextra. */ |
4291d9c8 RS |
1504 | |
1505 | int extra_warnings = 0; | |
1506 | ||
1507 | /* Treat warnings as errors. -Werror. */ | |
1508 | ||
1509 | int warnings_are_errors = 0; | |
1510 | ||
078721e1 | 1511 | /* Nonzero to warn about unused variables, functions et.al. */ |
4291d9c8 | 1512 | |
078721e1 AC |
1513 | int warn_unused_function; |
1514 | int warn_unused_label; | |
1515 | int warn_unused_parameter; | |
1516 | int warn_unused_variable; | |
1517 | int warn_unused_value; | |
1518 | ||
312f6255 GK |
1519 | /* Nonzero to warn about code which is never reached. */ |
1520 | ||
1521 | int warn_notreached; | |
1522 | ||
4291d9c8 RS |
1523 | /* Nonzero to warn about variables used before they are initialized. */ |
1524 | ||
1525 | int warn_uninitialized; | |
1526 | ||
6d2f8887 | 1527 | /* Nonzero means warn about all declarations which shadow others. */ |
4291d9c8 RS |
1528 | |
1529 | int warn_shadow; | |
1530 | ||
d6961341 AC |
1531 | /* Warn if a switch on an enum, that does not have a default case, |
1532 | fails to have a case for every enum value. */ | |
4291d9c8 RS |
1533 | |
1534 | int warn_switch; | |
1535 | ||
d6961341 AC |
1536 | /* Warn if a switch does not have a default case. */ |
1537 | ||
1538 | int warn_switch_default; | |
1539 | ||
173028e5 AC |
1540 | /* Warn if a switch on an enum fails to have a case for every enum |
1541 | value (regardless of the presence or otherwise of a default case). */ | |
1542 | ||
1543 | int warn_switch_enum; | |
1544 | ||
4291d9c8 RS |
1545 | /* Nonzero means warn about function definitions that default the return type |
1546 | or that use a null return and have a return-type other than void. */ | |
1547 | ||
1548 | int warn_return_type; | |
1549 | ||
1550 | /* Nonzero means warn about pointer casts that increase the required | |
1551 | alignment of the target type (and might therefore lead to a crash | |
1552 | due to a misaligned access). */ | |
1553 | ||
1554 | int warn_cast_align; | |
1555 | ||
b51e9c62 RK |
1556 | /* Nonzero means warn about any objects definitions whose size is larger |
1557 | than N bytes. Also want about function definitions whose returned | |
1558 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
854a97f0 | 1559 | |
b51e9c62 | 1560 | int warn_larger_than; |
4559fd9e | 1561 | HOST_WIDE_INT larger_than_size; |
4291d9c8 RS |
1562 | |
1563 | /* Nonzero means warn if inline function is too large. */ | |
1564 | ||
1565 | int warn_inline; | |
1566 | ||
1567 | /* Warn if a function returns an aggregate, | |
1568 | since there are often incompatible calling conventions for doing this. */ | |
1569 | ||
1570 | int warn_aggregate_return; | |
1571 | ||
3c12fcc2 GM |
1572 | /* Warn if packed attribute on struct is unnecessary and inefficient. */ |
1573 | ||
1574 | int warn_packed; | |
1575 | ||
1576 | /* Warn when gcc pads a structure to an alignment boundary. */ | |
1577 | ||
1578 | int warn_padded; | |
1579 | ||
18424ae1 BL |
1580 | /* Warn when an optimization pass is disabled. */ |
1581 | ||
1582 | int warn_disabled_optimization; | |
1583 | ||
b313a0fe RH |
1584 | /* Warn about functions which might be candidates for attribute noreturn. */ |
1585 | ||
1586 | int warn_missing_noreturn; | |
1587 | ||
9cabb1d8 | 1588 | /* Nonzero means warn about uses of __attribute__((deprecated)) |
e23bd218 IR |
1589 | declarations. */ |
1590 | ||
1591 | int warn_deprecated_decl = 1; | |
1592 | ||
bf52f899 NS |
1593 | /* Nonzero means warn about constructs which might not be |
1594 | strict-aliasing safe. */ | |
1595 | ||
1596 | int warn_strict_aliasing; | |
1597 | ||
65ca2d60 | 1598 | /* Like f_options, but for -W. */ |
4291d9c8 | 1599 | |
c083a819 | 1600 | static const lang_independent_options W_options[] = |
4291d9c8 | 1601 | { |
a6371940 ZW |
1602 | {"unused-function", &warn_unused_function, 1, |
1603 | N_("Warn when a function is unused") }, | |
1604 | {"unused-label", &warn_unused_label, 1, | |
1605 | N_("Warn when a label is unused") }, | |
1606 | {"unused-parameter", &warn_unused_parameter, 1, | |
1607 | N_("Warn when a function parameter is unused") }, | |
1608 | {"unused-variable", &warn_unused_variable, 1, | |
1609 | N_("Warn when a variable is unused") }, | |
1610 | {"unused-value", &warn_unused_value, 1, | |
1611 | N_("Warn when an expression value is unused") }, | |
1612 | {"system-headers", &warn_system_headers, 1, | |
1613 | N_("Do not suppress warnings from system headers") }, | |
1614 | {"error", &warnings_are_errors, 1, | |
1615 | N_("Treat all warnings as errors") }, | |
1616 | {"shadow", &warn_shadow, 1, | |
1617 | N_("Warn when one local variable shadows another") }, | |
b8468bc7 | 1618 | {"switch", &warn_switch, 1, |
d6961341 AC |
1619 | N_("Warn about enumerated switches, with no default, missing a case") }, |
1620 | {"switch-default", &warn_switch_default, 1, | |
1621 | N_("Warn about enumerated switches missing a default case") }, | |
173028e5 AC |
1622 | {"switch-enum", &warn_switch_enum, 1, |
1623 | N_("Warn about all enumerated switches missing a specific case") }, | |
b8468bc7 | 1624 | {"aggregate-return", &warn_aggregate_return, 1, |
a6371940 | 1625 | N_("Warn about returning structures, unions or arrays") }, |
b8468bc7 | 1626 | {"cast-align", &warn_cast_align, 1, |
a6371940 | 1627 | N_("Warn about pointer casts which increase alignment") }, |
854a97f0 | 1628 | {"unreachable-code", &warn_notreached, 1, |
a6371940 | 1629 | N_("Warn about code that will never be executed") }, |
b8468bc7 | 1630 | {"uninitialized", &warn_uninitialized, 1, |
ff7cc307 | 1631 | N_("Warn about uninitialized automatic variables") }, |
b8468bc7 | 1632 | {"inline", &warn_inline, 1, |
a6371940 | 1633 | N_("Warn when an inlined function cannot be inlined") }, |
3c12fcc2 | 1634 | {"packed", &warn_packed, 1, |
a6371940 | 1635 | N_("Warn when the packed attribute has no effect on struct layout") }, |
3c12fcc2 | 1636 | {"padded", &warn_padded, 1, |
a6371940 | 1637 | N_("Warn when padding is required to align struct members") }, |
18424ae1 | 1638 | {"disabled-optimization", &warn_disabled_optimization, 1, |
a6371940 | 1639 | N_("Warn when an optimization pass is disabled") }, |
e23bd218 IR |
1640 | {"deprecated-declarations", &warn_deprecated_decl, 1, |
1641 | N_("Warn about uses of __attribute__((deprecated)) declarations") }, | |
21c7361e | 1642 | {"missing-noreturn", &warn_missing_noreturn, 1, |
bf52f899 NS |
1643 | N_("Warn about functions which might be candidates for attribute noreturn") }, |
1644 | {"strict-aliasing", &warn_strict_aliasing, 1, | |
1645 | N_ ("Warn about code which might break the strict aliasing rules") } | |
4291d9c8 | 1646 | }; |
de6c5979 BL |
1647 | |
1648 | /* The following routines are useful in setting all the flags that | |
1649 | -ffast-math and -fno-fast-math imply. */ | |
1650 | ||
1651 | void | |
e25a75e6 | 1652 | set_fast_math_flags (int set) |
de6c5979 | 1653 | { |
748d29c1 NB |
1654 | flag_trapping_math = !set; |
1655 | flag_unsafe_math_optimizations = set; | |
2e8f2e8f | 1656 | flag_finite_math_only = set; |
748d29c1 | 1657 | flag_errno_math = !set; |
52bfebf0 RS |
1658 | if (set) |
1659 | flag_signaling_nans = 0; | |
de6c5979 BL |
1660 | } |
1661 | ||
748d29c1 NB |
1662 | /* Return true iff flags are set as if -ffast-math. */ |
1663 | bool | |
e25a75e6 | 1664 | fast_math_flags_set_p (void) |
de6c5979 | 1665 | { |
748d29c1 NB |
1666 | return (!flag_trapping_math |
1667 | && flag_unsafe_math_optimizations | |
2e8f2e8f | 1668 | && flag_finite_math_only |
748d29c1 | 1669 | && !flag_errno_math); |
de6c5979 BL |
1670 | } |
1671 | ||
4291d9c8 RS |
1672 | /* Output files for assembler code (real compiler output) |
1673 | and debugging dumps. */ | |
1674 | ||
1675 | FILE *asm_out_file; | |
1676 | FILE *aux_info_file; | |
032713aa | 1677 | FILE *rtl_dump_file = NULL; |
4291d9c8 | 1678 | |
132e01b1 TP |
1679 | /* Decode the string P as an integral parameter. |
1680 | If the string is indeed an integer return its numeric value else | |
192babfd | 1681 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
1682 | If PNAME is zero just return DEFVAL, do not call error. */ |
1683 | ||
132e01b1 | 1684 | int |
e25a75e6 | 1685 | read_integral_parameter (const char *p, const char *pname, const int defval) |
132e01b1 | 1686 | { |
192babfd | 1687 | const char *endp = p; |
132e01b1 TP |
1688 | |
1689 | while (*endp) | |
1690 | { | |
0df6c2c7 | 1691 | if (ISDIGIT (*endp)) |
132e01b1 TP |
1692 | endp++; |
1693 | else | |
192babfd TP |
1694 | break; |
1695 | } | |
1696 | ||
1697 | if (*endp != 0) | |
1698 | { | |
1699 | if (pname != 0) | |
09e4ab56 | 1700 | error ("invalid option argument `%s'", pname); |
192babfd | 1701 | return defval; |
132e01b1 TP |
1702 | } |
1703 | ||
1704 | return atoi (p); | |
1705 | } | |
4291d9c8 | 1706 | |
4291d9c8 | 1707 | /* Return the logarithm of X, base 2, considering X unsigned, |
37366632 RK |
1708 | if X is a power of 2. Otherwise, returns -1. |
1709 | ||
1710 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1711 | |
1712 | int | |
e25a75e6 | 1713 | exact_log2_wide (unsigned HOST_WIDE_INT x) |
4291d9c8 | 1714 | { |
b3694847 | 1715 | int log = 0; |
4291d9c8 RS |
1716 | /* Test for 0 or a power of 2. */ |
1717 | if (x == 0 || x != (x & -x)) | |
1718 | return -1; | |
1719 | while ((x >>= 1) != 0) | |
1720 | log++; | |
1721 | return log; | |
1722 | } | |
1723 | ||
1724 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1725 | If X is 0, return -1. |
1726 | ||
1727 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1728 | |
1729 | int | |
e25a75e6 | 1730 | floor_log2_wide (unsigned HOST_WIDE_INT x) |
4291d9c8 | 1731 | { |
b3694847 | 1732 | int log = -1; |
4291d9c8 RS |
1733 | while (x != 0) |
1734 | log++, | |
1735 | x >>= 1; | |
1736 | return log; | |
1737 | } | |
1738 | ||
a7023245 | 1739 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
c770ac2b ZW |
1740 | into ICE messages, which is much more user friendly. In case the |
1741 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
4291d9c8 RS |
1742 | |
1743 | static void | |
e25a75e6 | 1744 | crash_signal (int signo) |
4291d9c8 | 1745 | { |
c770ac2b | 1746 | signal (signo, SIG_DFL); |
9d533cb5 | 1747 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
1748 | } |
1749 | ||
886e0865 GK |
1750 | /* Arrange to dump core on error. (The regular error message is still |
1751 | printed first, except in the case of abort().) */ | |
1752 | ||
1753 | static void | |
e25a75e6 | 1754 | setup_core_dumping (void) |
886e0865 GK |
1755 | { |
1756 | #ifdef SIGABRT | |
1757 | signal (SIGABRT, SIG_DFL); | |
1758 | #endif | |
1759 | #if defined(HAVE_SETRLIMIT) | |
1760 | { | |
1761 | struct rlimit rlim; | |
1762 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 1763 | fatal_error ("getting core file size maximum limit: %m"); |
886e0865 GK |
1764 | rlim.rlim_cur = rlim.rlim_max; |
1765 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 1766 | fatal_error ("setting core file size limit to maximum: %m"); |
886e0865 GK |
1767 | } |
1768 | #endif | |
1769 | diagnostic_abort_on_error (global_dc); | |
1770 | } | |
1771 | ||
1772 | ||
4291d9c8 | 1773 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 1774 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 1775 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 1776 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
1777 | |
1778 | void | |
e25a75e6 | 1779 | strip_off_ending (char *name, int len) |
4291d9c8 | 1780 | { |
2290e0ec | 1781 | int i; |
41077ce4 | 1782 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
1783 | { |
1784 | if (name[len - i] == '.') | |
1785 | { | |
1786 | name[len - i] = '\0'; | |
1787 | break; | |
1788 | } | |
1789 | } | |
4291d9c8 RS |
1790 | } |
1791 | ||
7dce5088 | 1792 | /* Output a quoted string. */ |
0f41302f | 1793 | |
7dce5088 | 1794 | void |
e25a75e6 | 1795 | output_quoted_string (FILE *asm_file, const char *string) |
7dce5088 | 1796 | { |
e9a25f70 JL |
1797 | #ifdef OUTPUT_QUOTED_STRING |
1798 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1799 | #else | |
7dce5088 PE |
1800 | char c; |
1801 | ||
1802 | putc ('\"', asm_file); | |
1803 | while ((c = *string++) != 0) | |
1804 | { | |
042cdf71 ZW |
1805 | if (ISPRINT (c)) |
1806 | { | |
1807 | if (c == '\"' || c == '\\') | |
1808 | putc ('\\', asm_file); | |
1809 | putc (c, asm_file); | |
1810 | } | |
1811 | else | |
211a0cbe | 1812 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
1813 | } |
1814 | putc ('\"', asm_file); | |
e9a25f70 | 1815 | #endif |
7dce5088 PE |
1816 | } |
1817 | ||
211a0cbe GDR |
1818 | /* Output NAME into FILE after having turned it into something |
1819 | usable as an identifier in a target's assembly file. */ | |
1820 | void | |
e25a75e6 | 1821 | output_clean_symbol_name (FILE *file, const char *name) |
211a0cbe GDR |
1822 | { |
1823 | /* Make a copy of NAME. */ | |
da7ac8f1 | 1824 | char *id = xstrdup (name); |
211a0cbe GDR |
1825 | |
1826 | /* Make it look like a valid identifier for an assembler. */ | |
1827 | clean_symbol_name (id); | |
41077ce4 | 1828 | |
ce9e3a6d | 1829 | fputs (id, file); |
211a0cbe GDR |
1830 | free (id); |
1831 | } | |
1832 | ||
1833 | ||
4291d9c8 RS |
1834 | /* Output a file name in the form wanted by System V. */ |
1835 | ||
1836 | void | |
e25a75e6 | 1837 | output_file_directive (FILE *asm_file, const char *input_name) |
4291d9c8 RS |
1838 | { |
1839 | int len = strlen (input_name); | |
87e11268 | 1840 | const char *na = input_name + len; |
4291d9c8 RS |
1841 | |
1842 | /* NA gets INPUT_NAME sans directory names. */ | |
1843 | while (na > input_name) | |
1844 | { | |
1a8bb3dd | 1845 | if (IS_DIR_SEPARATOR (na[-1])) |
9cabb1d8 | 1846 | break; |
4291d9c8 RS |
1847 | na--; |
1848 | } | |
1849 | ||
1850 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1851 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1852 | #else | |
1853 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1854 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1855 | #else | |
7dce5088 PE |
1856 | fprintf (asm_file, "\t.file\t"); |
1857 | output_quoted_string (asm_file, na); | |
1858 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1859 | #endif |
1860 | #endif | |
1861 | } | |
ddc9542b | 1862 | |
61098249 RH |
1863 | /* Routine to open a dump file. Return true if the dump file is enabled. */ |
1864 | ||
1865 | static int | |
e25a75e6 | 1866 | open_dump_file (enum dump_file_index index, tree decl) |
032713aa | 1867 | { |
61098249 RH |
1868 | char *dump_name; |
1869 | const char *open_arg; | |
1870 | char seq[16]; | |
1871 | ||
1872 | if (! dump_file[index].enabled) | |
1873 | return 0; | |
0f41302f | 1874 | |
2a9a326b AS |
1875 | timevar_push (TV_DUMP); |
1876 | if (rtl_dump_file != NULL) | |
1877 | fclose (rtl_dump_file); | |
854a97f0 | 1878 | |
6baf9874 | 1879 | sprintf (seq, DUMPFILE_FORMAT, index); |
61098249 | 1880 | |
2a9a326b AS |
1881 | if (! dump_file[index].initialized) |
1882 | { | |
1883 | /* If we've not initialized the files, do so now. */ | |
1884 | if (graph_dump_format != no_graph | |
1885 | && dump_file[index].graph_dump_p) | |
1886 | { | |
1887 | dump_name = concat (seq, dump_file[index].extension, NULL); | |
1888 | clean_graph_dump_file (dump_base_name, dump_name); | |
1889 | free (dump_name); | |
1890 | } | |
1891 | dump_file[index].initialized = 1; | |
1892 | open_arg = "w"; | |
1893 | } | |
1894 | else | |
1895 | open_arg = "a"; | |
61098249 | 1896 | |
2a9a326b AS |
1897 | dump_name = concat (dump_base_name, seq, |
1898 | dump_file[index].extension, NULL); | |
61098249 | 1899 | |
2a9a326b AS |
1900 | rtl_dump_file = fopen (dump_name, open_arg); |
1901 | if (rtl_dump_file == NULL) | |
fa6ef813 | 1902 | fatal_error ("can't open %s: %m", dump_name); |
854a97f0 | 1903 | |
2a9a326b | 1904 | free (dump_name); |
032713aa | 1905 | |
2a9a326b | 1906 | if (decl) |
0f72964f JH |
1907 | fprintf (rtl_dump_file, "\n;; Function %s%s\n\n", |
1908 | (*lang_hooks.decl_printable_name) (decl, 2), | |
1909 | cfun->function_frequency == FUNCTION_FREQUENCY_HOT | |
1910 | ? " (hot)" | |
1911 | : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED | |
1912 | ? " (unlikely executed)" | |
1913 | : ""); | |
2a9a326b AS |
1914 | |
1915 | timevar_pop (TV_DUMP); | |
61098249 | 1916 | return 1; |
032713aa NC |
1917 | } |
1918 | ||
1919 | /* Routine to close a dump file. */ | |
61098249 | 1920 | |
032713aa | 1921 | static void |
e25a75e6 AJ |
1922 | close_dump_file (enum dump_file_index index, |
1923 | void (*func) (FILE *, rtx), | |
1924 | rtx insns) | |
032713aa | 1925 | { |
61098249 RH |
1926 | if (! rtl_dump_file) |
1927 | return; | |
1928 | ||
2a9a326b AS |
1929 | timevar_push (TV_DUMP); |
1930 | if (insns | |
1931 | && graph_dump_format != no_graph | |
1932 | && dump_file[index].graph_dump_p) | |
1933 | { | |
1934 | char seq[16]; | |
1935 | char *suffix; | |
61098249 | 1936 | |
6baf9874 | 1937 | sprintf (seq, DUMPFILE_FORMAT, index); |
2a9a326b AS |
1938 | suffix = concat (seq, dump_file[index].extension, NULL); |
1939 | print_rtl_graph_with_bb (dump_base_name, suffix, insns); | |
1940 | free (suffix); | |
1941 | } | |
61098249 | 1942 | |
2a9a326b AS |
1943 | if (func && insns) |
1944 | func (rtl_dump_file, insns); | |
854a97f0 | 1945 | |
2a9a326b AS |
1946 | fflush (rtl_dump_file); |
1947 | fclose (rtl_dump_file); | |
854a97f0 | 1948 | |
2a9a326b AS |
1949 | rtl_dump_file = NULL; |
1950 | timevar_pop (TV_DUMP); | |
dfe1a916 DE |
1951 | } |
1952 | ||
32291f94 MM |
1953 | /* Do any final processing required for the declarations in VEC, of |
1954 | which there are LEN. We write out inline functions and variables | |
1955 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 1956 | Returns nonzero if anything was put out. */ |
854a97f0 | 1957 | |
32291f94 | 1958 | int |
e25a75e6 | 1959 | wrapup_global_declarations (tree *vec, int len) |
32291f94 MM |
1960 | { |
1961 | tree decl; | |
1962 | int i; | |
1963 | int reconsider; | |
1964 | int output_something = 0; | |
1965 | ||
1966 | for (i = 0; i < len; i++) | |
1967 | { | |
1968 | decl = vec[i]; | |
854a97f0 | 1969 | |
2b59501b | 1970 | /* We're not deferring this any longer. Assignment is |
3dc575ff | 1971 | conditional to avoid needlessly dirtying PCH pages. */ |
2b59501b MA |
1972 | if (DECL_DEFER_OUTPUT (decl) != 0) |
1973 | DECL_DEFER_OUTPUT (decl) = 0; | |
854a97f0 | 1974 | |
48a7a235 NB |
1975 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) |
1976 | (*lang_hooks.finish_incomplete_decl) (decl); | |
32291f94 MM |
1977 | } |
1978 | ||
1979 | /* Now emit any global variables or functions that we have been | |
1980 | putting off. We need to loop in case one of the things emitted | |
1981 | here references another one which comes earlier in the list. */ | |
1982 | do | |
1983 | { | |
1984 | reconsider = 0; | |
1985 | for (i = 0; i < len; i++) | |
1986 | { | |
1987 | decl = vec[i]; | |
1988 | ||
1989 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1990 | continue; | |
1991 | ||
1992 | /* Don't write out static consts, unless we still need them. | |
1993 | ||
1994 | We also keep static consts if not optimizing (for debugging), | |
1995 | unless the user specified -fno-keep-static-consts. | |
1996 | ??? They might be better written into the debug information. | |
1997 | This is possible when using DWARF. | |
1998 | ||
1999 | A language processor that wants static constants to be always | |
2000 | written out (even if it is not used) is responsible for | |
2001 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
2002 | calls rest_of_decl_compilation from finish_decl. | |
2003 | One motivation for this is that is conventional in some | |
2004 | environments to write things like: | |
2005 | static const char rcsid[] = "... version string ..."; | |
2006 | intending to force the string to be in the executable. | |
2007 | ||
2008 | A language processor that would prefer to have unneeded | |
2009 | static constants "optimized away" would just defer writing | |
2010 | them out until here. E.g. C++ does this, because static | |
2011 | constants are often defined in header files. | |
2012 | ||
2013 | ??? A tempting alternative (for both C and C++) would be | |
2014 | to force a constant to be written if and only if it is | |
2015 | defined in a main file, as opposed to an include file. */ | |
2016 | ||
5cc90635 | 2017 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) |
32291f94 | 2018 | { |
5cc90635 JM |
2019 | bool needed = 1; |
2020 | ||
2021 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
2022 | /* needed */; | |
2023 | else if (DECL_COMDAT (decl)) | |
2024 | needed = 0; | |
2025 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
2026 | && (optimize || !flag_keep_static_consts | |
2027 | || DECL_ARTIFICIAL (decl))) | |
2028 | needed = 0; | |
2029 | ||
2030 | if (needed) | |
2031 | { | |
2032 | reconsider = 1; | |
2033 | rest_of_decl_compilation (decl, NULL, 1, 1); | |
2034 | } | |
32291f94 MM |
2035 | } |
2036 | ||
2037 | if (TREE_CODE (decl) == FUNCTION_DECL | |
2038 | && DECL_INITIAL (decl) != 0 | |
2039 | && DECL_SAVED_INSNS (decl) != 0 | |
2040 | && (flag_keep_inline_functions | |
59182242 | 2041 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
2042 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
2043 | { | |
2044 | reconsider = 1; | |
32291f94 | 2045 | output_inline_function (decl); |
32291f94 MM |
2046 | } |
2047 | } | |
2048 | ||
2049 | if (reconsider) | |
2050 | output_something = 1; | |
2051 | } | |
2052 | while (reconsider); | |
2053 | ||
2054 | return output_something; | |
2055 | } | |
2056 | ||
2057 | /* Issue appropriate warnings for the global declarations in VEC (of | |
2058 | which there are LEN). Output debugging information for them. */ | |
854a97f0 | 2059 | |
32291f94 | 2060 | void |
e25a75e6 | 2061 | check_global_declarations (tree *vec, int len) |
32291f94 MM |
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) | |
36b29d7d GK |
2110 | /* A volatile variable might be used in some non-obvious way. */ |
2111 | && ! TREE_THIS_VOLATILE (decl) | |
ef4f94ac RH |
2112 | /* Global register variables must be declared to reserve them. */ |
2113 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
2114 | /* Otherwise, ask the language. */ | |
2115 | && (*lang_hooks.decls.warn_unused_global) (decl)) | |
32291f94 MM |
2116 | warning_with_decl (decl, "`%s' defined but not used"); |
2117 | ||
33c21f5c HPN |
2118 | /* Avoid confusing the debug information machinery when there are |
2119 | errors. */ | |
2120 | if (errorcount == 0 && sorrycount == 0) | |
2121 | { | |
2122 | timevar_push (TV_SYMOUT); | |
2123 | (*debug_hooks->global_decl) (decl); | |
2124 | timevar_pop (TV_SYMOUT); | |
2125 | } | |
32291f94 MM |
2126 | } |
2127 | } | |
032713aa | 2128 | |
070588f0 | 2129 | /* Save the current INPUT_LOCATION on the top entry in the |
68723fae | 2130 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the |
070588f0 | 2131 | INPUT_LOCATION accordingly. */ |
68723fae MM |
2132 | |
2133 | void | |
e25a75e6 | 2134 | push_srcloc (const char *file, int line) |
68723fae MM |
2135 | { |
2136 | struct file_stack *fs; | |
2137 | ||
68723fae | 2138 | fs = (struct file_stack *) xmalloc (sizeof (struct file_stack)); |
6060edcb | 2139 | fs->location = input_location; |
68723fae | 2140 | fs->next = input_file_stack; |
640da953 PB |
2141 | input_filename = file; |
2142 | input_line = line; | |
68723fae MM |
2143 | input_file_stack = fs; |
2144 | input_file_stack_tick++; | |
2145 | } | |
2146 | ||
2147 | /* Pop the top entry off the stack of presently open source files. | |
070588f0 NS |
2148 | Restore the INPUT_LOCATION from the new topmost entry on the |
2149 | stack. */ | |
68723fae MM |
2150 | |
2151 | void | |
e25a75e6 | 2152 | pop_srcloc (void) |
68723fae MM |
2153 | { |
2154 | struct file_stack *fs; | |
854a97f0 | 2155 | |
68723fae | 2156 | fs = input_file_stack; |
640da953 | 2157 | input_location = fs->location; |
68723fae MM |
2158 | input_file_stack = fs->next; |
2159 | free (fs); | |
2160 | input_file_stack_tick++; | |
68723fae MM |
2161 | } |
2162 | ||
f5e99456 NB |
2163 | /* Compile an entire translation unit. Write a file of assembly |
2164 | output and various debugging dumps. */ | |
4291d9c8 RS |
2165 | |
2166 | static void | |
e25a75e6 | 2167 | compile_file (void) |
4291d9c8 | 2168 | { |
4291d9c8 RS |
2169 | /* Initialize yet another pass. */ |
2170 | ||
b93a436e | 2171 | init_final (main_input_filename); |
ca29da43 | 2172 | coverage_init (aux_base_name); |
4291d9c8 | 2173 | |
2a9a326b | 2174 | timevar_push (TV_PARSE); |
4291d9c8 | 2175 | |
52dabb6c NB |
2176 | /* Call the parser, which parses the entire file (calling |
2177 | rest_of_compilation for each function). */ | |
ff45c01e | 2178 | (*lang_hooks.parse_file) (set_yydebug); |
4291d9c8 | 2179 | |
7cb4ff28 ZW |
2180 | /* In case there were missing block closers, |
2181 | get us back to the global binding level. */ | |
37207ee7 | 2182 | (*lang_hooks.clear_binding_stack) (); |
4291d9c8 RS |
2183 | |
2184 | /* Compilation is now finished except for writing | |
2185 | what's left of the symbol table output. */ | |
2a9a326b | 2186 | timevar_pop (TV_PARSE); |
4291d9c8 | 2187 | |
1fe65c00 | 2188 | if (flag_syntax_only) |
22703ccc | 2189 | return; |
1fe65c00 | 2190 | |
2b59501b | 2191 | (*lang_hooks.decls.final_write_globals)(); |
4291d9c8 | 2192 | |
ca29da43 NS |
2193 | /* This must occur after the loop to output deferred functions. |
2194 | Else the coverage initializer would not be emitted if all the | |
2195 | functions in this compilation unit were deferred. */ | |
2196 | coverage_finish (); | |
2668793e | 2197 | |
4b8af8d9 JM |
2198 | /* Write out any pending weak symbol declarations. */ |
2199 | ||
2200 | weak_finish (); | |
2201 | ||
854a97f0 | 2202 | /* Do dbx symbols. */ |
2a9a326b | 2203 | timevar_push (TV_SYMOUT); |
7f905405 | 2204 | |
0021b564 JM |
2205 | #ifdef DWARF2_UNWIND_INFO |
2206 | if (dwarf2out_do_frame ()) | |
2207 | dwarf2out_frame_finish (); | |
2208 | #endif | |
2209 | ||
e2a12aca | 2210 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 2211 | timevar_pop (TV_SYMOUT); |
9a666dda | 2212 | |
4291d9c8 RS |
2213 | /* Output some stuff at end of file if nec. */ |
2214 | ||
2a1ee410 RH |
2215 | dw2_output_indirect_constants (); |
2216 | ||
51891abe | 2217 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
61098249 | 2218 | { |
2a9a326b | 2219 | timevar_push (TV_DUMP); |
61098249 | 2220 | open_dump_file (DFI_bp, NULL); |
51891abe JH |
2221 | |
2222 | end_branch_prob (); | |
2223 | ||
61098249 | 2224 | close_dump_file (DFI_bp, NULL, NULL_RTX); |
2a9a326b | 2225 | timevar_pop (TV_DUMP); |
61098249 | 2226 | } |
854a97f0 | 2227 | |
a5fe455b | 2228 | targetm.asm_out.file_end (); |
4291d9c8 | 2229 | |
acb0db7b ZW |
2230 | /* Attach a special .ident directive to the end of the file to identify |
2231 | the version of GCC which compiled this code. The format of the .ident | |
2232 | string is patterned after the ones produced by native SVR4 compilers. */ | |
2233 | #ifdef IDENT_ASM_OP | |
2234 | if (!flag_no_ident) | |
2235 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
2236 | IDENT_ASM_OP, version_string); | |
2237 | #endif | |
2238 | ||
61098249 | 2239 | if (optimize > 0 && open_dump_file (DFI_combine, NULL)) |
4291d9c8 | 2240 | { |
2a9a326b AS |
2241 | timevar_push (TV_DUMP); |
2242 | dump_combine_total_stats (rtl_dump_file); | |
61098249 | 2243 | close_dump_file (DFI_combine, NULL, NULL_RTX); |
2a9a326b | 2244 | timevar_pop (TV_DUMP); |
4291d9c8 | 2245 | } |
4291d9c8 | 2246 | } |
ddc9542b | 2247 | |
4291d9c8 RS |
2248 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, |
2249 | and TYPE_DECL nodes. | |
2250 | ||
ef6748cb MM |
2251 | This does nothing for local (non-static) variables, unless the |
2252 | variable is a register variable with an ASMSPEC. In that case, or | |
d558416e | 2253 | if the variable is not an automatic, it sets up the RTL and |
ef6748cb MM |
2254 | outputs any assembler code (label definition, storage allocation |
2255 | and initialization). | |
4291d9c8 RS |
2256 | |
2257 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2258 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2259 | if this declaration is not within a function. */ | |
2260 | ||
2261 | void | |
e25a75e6 AJ |
2262 | rest_of_decl_compilation (tree decl, |
2263 | const char *asmspec, | |
2264 | int top_level, | |
2265 | int at_end) | |
4291d9c8 | 2266 | { |
b14707c3 RH |
2267 | /* We deferred calling assemble_alias so that we could collect |
2268 | other attributes such as visibility. Emit the alias now. */ | |
2269 | { | |
2270 | tree alias; | |
2271 | alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); | |
2272 | if (alias) | |
2273 | { | |
2274 | alias = TREE_VALUE (TREE_VALUE (alias)); | |
2275 | alias = get_identifier (TREE_STRING_POINTER (alias)); | |
9cabb1d8 | 2276 | assemble_alias (decl, alias); |
b14707c3 RH |
2277 | } |
2278 | } | |
2279 | ||
4291d9c8 RS |
2280 | /* Forward declarations for nested functions are not "external", |
2281 | but we need to treat them as if they were. */ | |
216d5cdd | 2282 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 | 2283 | || TREE_CODE (decl) == FUNCTION_DECL) |
2a9a326b AS |
2284 | { |
2285 | timevar_push (TV_VARCONST); | |
b14707c3 | 2286 | |
8ce0a8a5 | 2287 | if (asmspec) |
9cabb1d8 | 2288 | make_decl_rtl (decl, asmspec); |
b14707c3 RH |
2289 | |
2290 | /* Don't output anything when a tentative file-scope definition | |
2291 | is seen. But at end of compilation, do output code for them. */ | |
8cf8d8a2 JM |
2292 | if (at_end || !DECL_DEFER_OUTPUT (decl)) |
2293 | assemble_variable (decl, top_level, at_end, 0); | |
35d8c8e2 SB |
2294 | |
2295 | #ifdef ASM_FINISH_DECLARE_OBJECT | |
2a9a326b AS |
2296 | if (decl == last_assemble_variable_decl) |
2297 | { | |
2298 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2299 | top_level, at_end); | |
2300 | } | |
35d8c8e2 | 2301 | #endif |
b14707c3 | 2302 | |
2a9a326b AS |
2303 | timevar_pop (TV_VARCONST); |
2304 | } | |
216d5cdd | 2305 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2306 | { |
2307 | if (decode_reg_name (asmspec) >= 0) | |
2308 | { | |
19e7881c | 2309 | SET_DECL_RTL (decl, NULL_RTX); |
6c418184 | 2310 | make_decl_rtl (decl, asmspec); |
4291d9c8 RS |
2311 | } |
2312 | else | |
8f17b5c5 MM |
2313 | { |
2314 | error ("invalid register name `%s' for register variable", asmspec); | |
2315 | DECL_REGISTER (decl) = 0; | |
19e7881c MM |
2316 | if (!top_level) |
2317 | expand_decl (decl); | |
8f17b5c5 | 2318 | } |
4291d9c8 | 2319 | } |
f246a305 RS |
2320 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2321 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2322 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2323 | { |
2324 | timevar_push (TV_SYMOUT); | |
2325 | dbxout_symbol (decl, 0); | |
2326 | timevar_pop (TV_SYMOUT); | |
2327 | } | |
4291d9c8 RS |
2328 | #endif |
2329 | #ifdef SDB_DEBUGGING_INFO | |
2330 | else if (write_symbols == SDB_DEBUG && top_level | |
2331 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2332 | { |
2333 | timevar_push (TV_SYMOUT); | |
2334 | sdbout_symbol (decl, 0); | |
2335 | timevar_pop (TV_SYMOUT); | |
2336 | } | |
4291d9c8 | 2337 | #endif |
cc0017a9 ZD |
2338 | #ifdef DWARF2_DEBUGGING_INFO |
2339 | else if ((write_symbols == DWARF2_DEBUG | |
2340 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
2341 | && top_level | |
2342 | && TREE_CODE (decl) == TYPE_DECL) | |
2343 | { | |
2344 | timevar_push (TV_SYMOUT); | |
2345 | dwarf2out_decl (decl); | |
2346 | timevar_pop (TV_SYMOUT); | |
2347 | } | |
2348 | #endif | |
4291d9c8 RS |
2349 | } |
2350 | ||
2351 | /* Called after finishing a record, union or enumeral type. */ | |
2352 | ||
2353 | void | |
e25a75e6 | 2354 | rest_of_type_compilation ( |
35d8c8e2 SB |
2355 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) \ |
2356 | || defined (SDB_DEBUGGING_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
e25a75e6 AJ |
2357 | tree type, |
2358 | int toplev | |
114791ea | 2359 | #else |
e25a75e6 | 2360 | tree type ATTRIBUTE_UNUSED, |
05a0e2af | 2361 | int toplev ATTRIBUTE_UNUSED |
114791ea | 2362 | #endif |
e25a75e6 | 2363 | ) |
4291d9c8 | 2364 | { |
33c21f5c HPN |
2365 | /* Avoid confusing the debug information machinery when there are |
2366 | errors. */ | |
2367 | if (errorcount != 0 || sorrycount != 0) | |
2368 | return; | |
2369 | ||
2a9a326b | 2370 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2371 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2372 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2373 | dbxout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 RS |
2374 | #endif |
2375 | #ifdef SDB_DEBUGGING_INFO | |
2376 | if (write_symbols == SDB_DEBUG) | |
d8d1d62b | 2377 | sdbout_symbol (TYPE_STUB_DECL (type), !toplev); |
881c6935 JM |
2378 | #endif |
2379 | #ifdef DWARF2_DEBUGGING_INFO | |
7a0c8d71 DR |
2380 | if ((write_symbols == DWARF2_DEBUG |
2381 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
2382 | && toplev) | |
881c6935 | 2383 | dwarf2out_decl (TYPE_STUB_DECL (type)); |
4291d9c8 | 2384 | #endif |
2a9a326b | 2385 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2386 | } |
2387 | ||
ddc9542b AH |
2388 | /* Turn the RTL into assembly. */ |
2389 | static void | |
2390 | rest_of_handle_final (tree decl, rtx insns) | |
4291d9c8 | 2391 | { |
ddc9542b AH |
2392 | timevar_push (TV_FINAL); |
2393 | { | |
2394 | rtx x; | |
2395 | const char *fnname; | |
4291d9c8 | 2396 | |
ddc9542b AH |
2397 | /* Get the function's name, as described by its RTL. This may be |
2398 | different from the DECL_NAME name used in the source file. */ | |
2a9a326b | 2399 | |
ddc9542b AH |
2400 | x = DECL_RTL (decl); |
2401 | if (GET_CODE (x) != MEM) | |
2402 | abort (); | |
2403 | x = XEXP (x, 0); | |
2404 | if (GET_CODE (x) != SYMBOL_REF) | |
2405 | abort (); | |
2406 | fnname = XSTR (x, 0); | |
1b3d8f8a | 2407 | |
ddc9542b AH |
2408 | assemble_start_function (decl, fnname); |
2409 | final_start_function (insns, asm_out_file, optimize); | |
2410 | final (insns, asm_out_file, optimize, 0); | |
2411 | final_end_function (); | |
d511f9d5 | 2412 | |
ddc9542b AH |
2413 | #ifdef IA64_UNWIND_INFO |
2414 | /* ??? The IA-64 ".handlerdata" directive must be issued before | |
2415 | the ".endp" directive that closes the procedure descriptor. */ | |
2416 | output_function_exception_table (); | |
2417 | #endif | |
fcd7f76b | 2418 | |
ddc9542b | 2419 | assemble_end_function (decl, fnname); |
e619323d | 2420 | |
ddc9542b AH |
2421 | #ifndef IA64_UNWIND_INFO |
2422 | /* Otherwise, it feels unclean to switch sections in the middle. */ | |
2423 | output_function_exception_table (); | |
2424 | #endif | |
1f8f4a0b | 2425 | |
ddc9542b AH |
2426 | if (! quiet_flag) |
2427 | fflush (asm_out_file); | |
4291d9c8 | 2428 | |
ddc9542b AH |
2429 | /* Release all memory allocated by flow. */ |
2430 | free_basic_block_vars (0); | |
14a774a9 | 2431 | |
ddc9542b AH |
2432 | /* Release all memory held by regsets now. */ |
2433 | regset_release_memory (); | |
2434 | } | |
2435 | timevar_pop (TV_FINAL); | |
4291d9c8 | 2436 | |
ddc9542b AH |
2437 | ggc_collect (); |
2438 | } | |
4291d9c8 | 2439 | |
ddc9542b AH |
2440 | #ifdef DELAY_SLOTS |
2441 | /* Run delay slot optimization. */ | |
2442 | static void | |
2443 | rest_of_handle_delay_slots (tree decl, rtx insns) | |
2444 | { | |
2445 | timevar_push (TV_DBR_SCHED); | |
2446 | open_dump_file (DFI_dbr, decl); | |
4291d9c8 | 2447 | |
ddc9542b | 2448 | dbr_schedule (insns, rtl_dump_file); |
4291d9c8 | 2449 | |
ddc9542b AH |
2450 | close_dump_file (DFI_dbr, print_rtl, insns); |
2451 | timevar_pop (TV_DBR_SCHED); | |
f93dacbd | 2452 | |
ddc9542b AH |
2453 | ggc_collect (); |
2454 | } | |
2455 | #endif | |
3c030e88 | 2456 | |
ddc9542b AH |
2457 | #ifdef STACK_REGS |
2458 | /* Convert register usage from flat register file usage to a stack | |
2459 | register file. */ | |
2460 | static void | |
2461 | rest_of_handle_stack_regs (tree decl, rtx insns) | |
2462 | { | |
2463 | timevar_push (TV_REG_STACK); | |
2464 | open_dump_file (DFI_stack, decl); | |
a701efba | 2465 | |
ddc9542b AH |
2466 | if (reg_to_stack (insns, rtl_dump_file) && optimize) |
2467 | { | |
2468 | if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK | |
2469 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)) | |
2470 | && flag_reorder_blocks) | |
2471 | { | |
2472 | reorder_basic_blocks (); | |
2473 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK); | |
4291d9c8 | 2474 | } |
b8471b65 | 2475 | } |
07af9d16 | 2476 | |
ddc9542b AH |
2477 | close_dump_file (DFI_stack, print_rtl_with_bb, insns); |
2478 | timevar_pop (TV_REG_STACK); | |
c28abdf0 | 2479 | |
1f8f4a0b | 2480 | ggc_collect (); |
ddc9542b AH |
2481 | } |
2482 | #endif | |
0a1c58a2 | 2483 | |
49ad7cfa | 2484 | |
ddc9542b AH |
2485 | /* Machine independent reorg pass. */ |
2486 | static void | |
2487 | rest_of_handle_machine_reorg (tree decl, rtx insns) | |
2488 | { | |
2489 | timevar_push (TV_MACH_DEP); | |
2490 | open_dump_file (DFI_mach, decl); | |
4291d9c8 | 2491 | |
ddc9542b | 2492 | (*targetm.machine_dependent_reorg) (); |
21c7361e | 2493 | |
ddc9542b AH |
2494 | close_dump_file (DFI_mach, print_rtl, insns); |
2495 | timevar_pop (TV_MACH_DEP); | |
4291d9c8 | 2496 | |
ddc9542b AH |
2497 | ggc_collect (); |
2498 | } | |
d92b4486 | 2499 | |
969d70ca | 2500 | |
ddc9542b AH |
2501 | /* Run new register allocator. Return TRUE if we must exit |
2502 | rest_of_compilation upon return. */ | |
2503 | static bool | |
2504 | rest_of_handle_new_regalloc (tree decl, rtx insns, int *rebuild_notes) | |
2505 | { | |
2506 | int failure; | |
ac228d4e | 2507 | |
ddc9542b AH |
2508 | delete_trivially_dead_insns (insns, max_reg_num ()); |
2509 | reg_alloc (); | |
969d70ca | 2510 | |
ddc9542b AH |
2511 | timevar_pop (TV_LOCAL_ALLOC); |
2512 | if (dump_file[DFI_lreg].enabled) | |
9d9e5c09 | 2513 | { |
ddc9542b | 2514 | timevar_push (TV_DUMP); |
9d9e5c09 | 2515 | |
ddc9542b AH |
2516 | close_dump_file (DFI_lreg, NULL, NULL); |
2517 | timevar_pop (TV_DUMP); | |
2518 | } | |
5204d665 | 2519 | |
ddc9542b AH |
2520 | /* XXX clean up the whole mess to bring live info in shape again. */ |
2521 | timevar_push (TV_GLOBAL_ALLOC); | |
2522 | open_dump_file (DFI_greg, decl); | |
d92b4486 | 2523 | |
ddc9542b AH |
2524 | build_insn_chain (insns); |
2525 | failure = reload (insns, 0); | |
2a9a326b | 2526 | |
ddc9542b AH |
2527 | timevar_pop (TV_GLOBAL_ALLOC); |
2528 | ||
2529 | if (dump_file[DFI_greg].enabled) | |
52a11cbf | 2530 | { |
ddc9542b | 2531 | timevar_push (TV_DUMP); |
52a11cbf | 2532 | |
ddc9542b | 2533 | dump_global_regs (rtl_dump_file); |
52a11cbf | 2534 | |
ddc9542b AH |
2535 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); |
2536 | timevar_pop (TV_DUMP); | |
52a11cbf RH |
2537 | } |
2538 | ||
ddc9542b AH |
2539 | if (failure) |
2540 | return true; | |
4291d9c8 | 2541 | |
ddc9542b AH |
2542 | reload_completed = 1; |
2543 | *rebuild_notes = 0; | |
4291d9c8 | 2544 | |
ddc9542b AH |
2545 | return false; |
2546 | } | |
4291d9c8 | 2547 | |
ddc9542b AH |
2548 | /* Run old register allocator. Return TRUE if we must exit |
2549 | rest_of_compilation upon return. */ | |
2550 | static bool | |
2551 | rest_of_handle_old_regalloc (tree decl, rtx insns, int *rebuild_notes) | |
2552 | { | |
2553 | int failure; | |
c9ec4f99 | 2554 | |
ddc9542b AH |
2555 | /* Allocate the reg_renumber array. */ |
2556 | allocate_reg_info (max_regno, FALSE, TRUE); | |
4291d9c8 | 2557 | |
ddc9542b AH |
2558 | /* And the reg_equiv_memory_loc array. */ |
2559 | reg_equiv_memory_loc = (rtx *) xcalloc (max_regno, sizeof (rtx)); | |
02db399d | 2560 | |
ddc9542b | 2561 | allocate_initial_values (reg_equiv_memory_loc); |
994a57cd | 2562 | |
ddc9542b AH |
2563 | regclass (insns, max_reg_num (), rtl_dump_file); |
2564 | *rebuild_notes = local_alloc (); | |
2a9a326b | 2565 | |
ddc9542b | 2566 | timevar_pop (TV_LOCAL_ALLOC); |
3c030e88 | 2567 | |
ddc9542b | 2568 | if (dump_file[DFI_lreg].enabled) |
1c4a429a | 2569 | { |
ddc9542b AH |
2570 | timevar_push (TV_DUMP); |
2571 | ||
2572 | dump_flow_info (rtl_dump_file); | |
2573 | dump_local_alloc (rtl_dump_file); | |
2574 | ||
2575 | close_dump_file (DFI_lreg, print_rtl_with_bb, insns); | |
2576 | timevar_pop (TV_DUMP); | |
1c4a429a | 2577 | } |
2a9a326b | 2578 | |
ddc9542b | 2579 | ggc_collect (); |
673b5311 | 2580 | |
ddc9542b AH |
2581 | timevar_push (TV_GLOBAL_ALLOC); |
2582 | open_dump_file (DFI_greg, decl); | |
2583 | ||
2584 | /* If optimizing, allocate remaining pseudo-regs. Do the reload | |
2585 | pass fixing up any insns that are invalid. */ | |
2586 | ||
2587 | if (optimize) | |
2588 | failure = global_alloc (rtl_dump_file); | |
2589 | else | |
a18820c6 | 2590 | { |
ddc9542b AH |
2591 | build_insn_chain (insns); |
2592 | failure = reload (insns, 0); | |
a18820c6 RH |
2593 | } |
2594 | ||
ddc9542b | 2595 | timevar_pop (TV_GLOBAL_ALLOC); |
0826f1d8 | 2596 | |
ddc9542b AH |
2597 | if (dump_file[DFI_greg].enabled) |
2598 | { | |
2599 | timevar_push (TV_DUMP); | |
0826f1d8 | 2600 | |
ddc9542b | 2601 | dump_global_regs (rtl_dump_file); |
0826f1d8 | 2602 | |
ddc9542b AH |
2603 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); |
2604 | timevar_pop (TV_DUMP); | |
2605 | } | |
0826f1d8 | 2606 | |
ddc9542b AH |
2607 | return failure; |
2608 | } | |
0b47e4c1 | 2609 | |
ddc9542b AH |
2610 | /* Run the regrename and cprop passes. */ |
2611 | static void | |
2612 | rest_of_handle_regrename (tree decl, rtx insns) | |
2613 | { | |
2614 | timevar_push (TV_RENAME_REGISTERS); | |
2615 | open_dump_file (DFI_rnreg, decl); | |
0b47e4c1 | 2616 | |
ddc9542b AH |
2617 | if (flag_rename_registers) |
2618 | regrename_optimize (); | |
2619 | if (flag_cprop_registers) | |
2620 | copyprop_hardreg_forward (); | |
0b47e4c1 | 2621 | |
ddc9542b AH |
2622 | close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); |
2623 | timevar_pop (TV_RENAME_REGISTERS); | |
2624 | } | |
0b47e4c1 | 2625 | |
ddc9542b AH |
2626 | /* Reorder basic blocks. */ |
2627 | static void | |
2628 | rest_of_handle_reorder_blocks (tree decl, rtx insns) | |
2629 | { | |
2630 | timevar_push (TV_REORDER_BLOCKS); | |
2631 | open_dump_file (DFI_bbro, decl); | |
2632 | ||
2633 | /* Last attempt to optimize CFG, as scheduling, peepholing and insn | |
2634 | splitting possibly introduced more crossjumping opportunities. */ | |
2635 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE | |
2636 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
2637 | ||
2638 | if (flag_sched2_use_traces && flag_schedule_insns_after_reload) | |
2639 | tracer (); | |
2640 | if (flag_reorder_blocks) | |
2641 | reorder_basic_blocks (); | |
2642 | if (flag_reorder_blocks | |
2643 | || (flag_sched2_use_traces && flag_schedule_insns_after_reload)) | |
2644 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); | |
2645 | ||
2646 | close_dump_file (DFI_bbro, print_rtl_with_bb, insns); | |
2647 | timevar_pop (TV_REORDER_BLOCKS); | |
e25a75e6 | 2648 | } |
ddc9542b | 2649 | |
a2f8629a | 2650 | #ifdef INSN_SCHEDULING |
ddc9542b AH |
2651 | /* Run instruction scheduler. */ |
2652 | static void | |
2653 | rest_of_handle_sched (tree decl, rtx insns) | |
2654 | { | |
2655 | timevar_push (TV_SCHED); | |
0826f1d8 | 2656 | |
ddc9542b AH |
2657 | /* Print function header into sched dump now |
2658 | because doing the sched analysis makes some of the dump. */ | |
2659 | if (optimize > 0 && flag_schedule_insns) | |
2660 | { | |
2661 | open_dump_file (DFI_sched, decl); | |
0826f1d8 | 2662 | |
ddc9542b AH |
2663 | /* Do control and data sched analysis, |
2664 | and write some of the results to dump file. */ | |
0826f1d8 | 2665 | |
ddc9542b | 2666 | schedule_insns (rtl_dump_file); |
0826f1d8 | 2667 | |
ddc9542b AH |
2668 | close_dump_file (DFI_sched, print_rtl_with_bb, insns); |
2669 | } | |
ddc9542b | 2670 | timevar_pop (TV_SCHED); |
0826f1d8 | 2671 | |
ddc9542b AH |
2672 | ggc_collect (); |
2673 | } | |
0826f1d8 | 2674 | |
ddc9542b AH |
2675 | /* Run second scheduling pass after reload. */ |
2676 | static void | |
2677 | rest_of_handle_sched2 (tree decl, rtx insns) | |
2678 | { | |
2679 | timevar_push (TV_SCHED2); | |
2680 | open_dump_file (DFI_sched2, decl); | |
0826f1d8 | 2681 | |
ddc9542b AH |
2682 | /* Do control and data sched analysis again, |
2683 | and write some more of the results to dump file. */ | |
0826f1d8 | 2684 | |
ddc9542b | 2685 | split_all_insns (1); |
0826f1d8 | 2686 | |
ddc9542b AH |
2687 | if (flag_sched2_use_superblocks || flag_sched2_use_traces) |
2688 | { | |
2689 | schedule_ebbs (rtl_dump_file); | |
2690 | /* No liveness updating code yet, but it should be easy to do. | |
2691 | reg-stack recompute the liveness when needed for now. */ | |
2692 | count_or_remove_death_notes (NULL, 1); | |
2693 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
0826f1d8 | 2694 | } |
ddc9542b AH |
2695 | else |
2696 | schedule_insns (rtl_dump_file); | |
0826f1d8 | 2697 | |
ddc9542b AH |
2698 | close_dump_file (DFI_sched2, print_rtl_with_bb, insns); |
2699 | timevar_pop (TV_SCHED2); | |
9ec6d7ab | 2700 | |
ddc9542b AH |
2701 | ggc_collect (); |
2702 | } | |
2703 | #endif | |
38c1593d | 2704 | |
ddc9542b AH |
2705 | /* Register allocation pre-pass, to reduce number of moves necessary |
2706 | for two-address machines. */ | |
2707 | static void | |
2708 | rest_of_handle_regmove (tree decl, rtx insns) | |
2709 | { | |
2710 | timevar_push (TV_REGMOVE); | |
2711 | open_dump_file (DFI_regmove, decl); | |
2a9a326b | 2712 | |
ddc9542b | 2713 | regmove_optimize (insns, max_reg_num (), rtl_dump_file); |
a18820c6 | 2714 | |
ddc9542b AH |
2715 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); |
2716 | close_dump_file (DFI_regmove, print_rtl_with_bb, insns); | |
2717 | timevar_pop (TV_REGMOVE); | |
dfdb644f | 2718 | |
1f8f4a0b | 2719 | ggc_collect (); |
ddc9542b | 2720 | } |
a3770a81 | 2721 | |
ddc9542b AH |
2722 | /* Run tracer. */ |
2723 | static void | |
2724 | rest_of_handle_tracer (tree decl, rtx insns) | |
2725 | { | |
2726 | timevar_push (TV_TRACER); | |
2727 | open_dump_file (DFI_tracer, decl); | |
2728 | if (rtl_dump_file) | |
2729 | dump_flow_info (rtl_dump_file); | |
2730 | tracer (); | |
2731 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2732 | reg_scan (insns, max_reg_num (), 0); | |
2733 | close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ()); | |
2734 | timevar_pop (TV_TRACER); | |
2735 | } | |
4291d9c8 | 2736 | |
ddc9542b AH |
2737 | /* If-conversion and CFG cleanup. */ |
2738 | static void | |
2739 | rest_of_handle_if_conversion (tree decl, rtx insns) | |
2740 | { | |
2741 | open_dump_file (DFI_ce1, decl); | |
2742 | if (flag_if_conversion) | |
4291d9c8 | 2743 | { |
ddc9542b | 2744 | timevar_push (TV_IFCVT); |
38c1593d JH |
2745 | if (rtl_dump_file) |
2746 | dump_flow_info (rtl_dump_file); | |
ddc9542b AH |
2747 | cleanup_cfg (CLEANUP_EXPENSIVE); |
2748 | reg_scan (insns, max_reg_num (), 0); | |
2749 | if_convert (0); | |
2750 | timevar_pop (TV_IFCVT); | |
2751 | } | |
2752 | timevar_push (TV_JUMP); | |
2753 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2754 | reg_scan (insns, max_reg_num (), 0); | |
2755 | timevar_pop (TV_JUMP); | |
2756 | close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ()); | |
2757 | } | |
032713aa | 2758 | |
ddc9542b AH |
2759 | /* Rerun if-conversion, as combine may have simplified things enough |
2760 | to now meet sequence length restrictions. */ | |
2761 | static void | |
2762 | rest_of_handle_if_after_combine (tree decl, rtx insns) | |
2763 | { | |
2764 | timevar_push (TV_IFCVT); | |
2765 | open_dump_file (DFI_ce2, decl); | |
4291d9c8 | 2766 | |
ddc9542b AH |
2767 | no_new_pseudos = 0; |
2768 | if_convert (1); | |
2769 | no_new_pseudos = 1; | |
a18820c6 | 2770 | |
ddc9542b AH |
2771 | close_dump_file (DFI_ce2, print_rtl_with_bb, insns); |
2772 | timevar_pop (TV_IFCVT); | |
2773 | } | |
2ca6672b | 2774 | |
ddc9542b AH |
2775 | /* Do branch profiling and static profile estimation passes. */ |
2776 | static void | |
2777 | rest_of_handle_branch_prob (tree decl, rtx insns) | |
2778 | { | |
2779 | struct loops loops; | |
c5c76735 | 2780 | |
ddc9542b AH |
2781 | timevar_push (TV_BRANCH_PROB); |
2782 | open_dump_file (DFI_bp, decl); | |
2783 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) | |
2784 | branch_prob (); | |
2a9a326b | 2785 | |
ddc9542b AH |
2786 | /* Discover and record the loop depth at the head of each basic |
2787 | block. The loop infrastructure does the real job for us. */ | |
2788 | flow_loops_find (&loops, LOOP_TREE); | |
2789 | ||
2790 | if (rtl_dump_file) | |
2791 | flow_loops_dump (&loops, rtl_dump_file, NULL, 0); | |
4291d9c8 | 2792 | |
ddc9542b AH |
2793 | /* Estimate using heuristics if no profiling info is available. */ |
2794 | if (flag_guess_branch_prob) | |
2795 | estimate_probability (&loops); | |
735a0e33 | 2796 | |
ddc9542b AH |
2797 | flow_loops_free (&loops); |
2798 | close_dump_file (DFI_bp, print_rtl_with_bb, insns); | |
2799 | timevar_pop (TV_BRANCH_PROB); | |
2800 | } | |
2801 | ||
2802 | /* Do control and data flow analysis; write some of the results to the | |
2803 | dump file. */ | |
2804 | static void | |
2805 | rest_of_handle_cfg (tree decl, rtx insns) | |
2806 | { | |
2807 | open_dump_file (DFI_cfg, decl); | |
2808 | if (rtl_dump_file) | |
2809 | dump_flow_info (rtl_dump_file); | |
2810 | if (optimize) | |
2811 | cleanup_cfg (CLEANUP_EXPENSIVE | |
2812 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
2813 | ||
2814 | /* It may make more sense to mark constant functions after dead code is | |
2815 | eliminated by life_analysis, but we need to do it early, as -fprofile-arcs | |
2816 | may insert code making function non-constant, but we still must consider | |
2817 | it as constant, otherwise -fbranch-probabilities will not read data back. | |
2818 | ||
2819 | life_analysis rarely eliminates modification of external memory. | |
2820 | */ | |
2821 | if (optimize) | |
2822 | mark_constant_function (); | |
4291d9c8 | 2823 | |
ddc9542b AH |
2824 | close_dump_file (DFI_cfg, print_rtl_with_bb, insns); |
2825 | } | |
2826 | ||
2827 | /* Purge addressofs. */ | |
2828 | static void | |
2829 | rest_of_handle_addresof (tree decl, rtx insns) | |
2830 | { | |
61098249 RH |
2831 | open_dump_file (DFI_addressof, decl); |
2832 | ||
e9a25f70 | 2833 | purge_addressof (insns); |
38c1593d JH |
2834 | if (optimize) |
2835 | purge_all_dead_edges (0); | |
e9a25f70 JL |
2836 | reg_scan (insns, max_reg_num (), 1); |
2837 | ||
61098249 | 2838 | close_dump_file (DFI_addressof, print_rtl, insns); |
ddc9542b | 2839 | } |
735a0e33 | 2840 | |
ddc9542b AH |
2841 | /* We may have potential sibling or tail recursion sites. Select one |
2842 | (of possibly multiple) methods of performing the call. */ | |
2843 | static void | |
2844 | rest_of_handle_sibling_calls (rtx insns) | |
2845 | { | |
2846 | rtx insn; | |
2847 | optimize_sibling_and_tail_recursive_calls (); | |
2848 | ||
2849 | /* Recompute the CFG as sibling optimization clobbers it randomly. */ | |
2850 | free_bb_for_insn (); | |
2851 | find_exception_handler_labels (); | |
2852 | rebuild_jump_labels (insns); | |
2853 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
a3770a81 | 2854 | |
ddc9542b AH |
2855 | /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION |
2856 | notes before simplifying cfg and we must do lowering after sibcall | |
2857 | that unhides parts of RTL chain and cleans up the CFG. | |
7506f491 | 2858 | |
ddc9542b AH |
2859 | Until sibcall is replaced by tree-level optimizer, lets just |
2860 | sweep away the NOTE_INSN_PREDICTION notes that leaked out. */ | |
2861 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) | |
2862 | if (GET_CODE (insn) == NOTE | |
2863 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION) | |
2864 | delete_insn (insn); | |
2865 | ||
2866 | close_dump_file (DFI_sibling, print_rtl, get_insns ()); | |
2867 | } | |
2868 | ||
2869 | /* Perform jump bypassing and control flow optimizations. */ | |
2870 | static void | |
2871 | rest_of_handle_jump_bypass (tree decl, rtx insns) | |
2872 | { | |
2873 | timevar_push (TV_BYPASS); | |
2874 | open_dump_file (DFI_bypass, decl); | |
48aba75b | 2875 | |
ddc9542b | 2876 | cleanup_cfg (CLEANUP_EXPENSIVE); |
735a0e33 | 2877 | |
ddc9542b AH |
2878 | if (bypass_jumps (rtl_dump_file)) |
2879 | { | |
b90e45ae | 2880 | rebuild_jump_labels (insns); |
ddc9542b | 2881 | cleanup_cfg (CLEANUP_EXPENSIVE); |
2ca6672b | 2882 | delete_trivially_dead_insns (insns, max_reg_num ()); |
ddc9542b | 2883 | } |
e78d9500 | 2884 | |
ddc9542b AH |
2885 | close_dump_file (DFI_bypass, print_rtl_with_bb, insns); |
2886 | timevar_pop (TV_BYPASS); | |
791f5e8d | 2887 | |
ddc9542b | 2888 | ggc_collect (); |
3d1f4922 | 2889 | |
ddc9542b AH |
2890 | #ifdef ENABLE_CHECKING |
2891 | verify_flow_info (); | |
2892 | #endif | |
2893 | } | |
5262d6b6 | 2894 | |
ddc9542b AH |
2895 | /* Handle inlining of functions in rest_of_compilation. Return TRUE |
2896 | if we must exit rest_of_compilation upon return. */ | |
2897 | static bool | |
2898 | rest_of_handle_inlining (tree decl) | |
2899 | { | |
2900 | rtx insns; | |
2901 | int inlinable = 0; | |
2902 | tree parent; | |
2903 | const char *lose; | |
2904 | ||
2905 | /* If we are reconsidering an inline function at the end of | |
2906 | compilation, skip the stuff for making it inline. */ | |
2907 | if (DECL_SAVED_INSNS (decl) != 0) | |
2908 | return 0; | |
2909 | ||
2910 | /* If this is nested inside an inlined external function, pretend | |
2911 | it was only declared. Since we cannot inline such functions, | |
2912 | generating code for this one is not only not necessary but will | |
2913 | confuse some debugging output writers. */ | |
2914 | for (parent = DECL_CONTEXT (current_function_decl); | |
2915 | parent != NULL_TREE; | |
2916 | parent = get_containing_scope (parent)) | |
2917 | if (TREE_CODE (parent) == FUNCTION_DECL | |
2918 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
2919 | { | |
2920 | DECL_INITIAL (decl) = 0; | |
2921 | return true; | |
2922 | } | |
2923 | else if (TYPE_P (parent)) | |
2924 | /* A function in a local class should be treated normally. */ | |
2925 | break; | |
48aba75b | 2926 | |
ddc9542b AH |
2927 | /* If requested, consider whether to make this function inline. */ |
2928 | if ((DECL_INLINE (decl) && !flag_no_inline) | |
2929 | || flag_inline_functions) | |
2930 | { | |
2931 | timevar_push (TV_INTEGRATION); | |
2932 | lose = function_cannot_inline_p (decl); | |
2933 | timevar_pop (TV_INTEGRATION); | |
2934 | if (lose || ! optimize) | |
2935 | { | |
2936 | if (warn_inline && DECL_INLINE (decl)) | |
2937 | warning_with_decl (decl, lose); | |
2938 | DECL_ABSTRACT_ORIGIN (decl) = 0; | |
2939 | /* Don't really compile an extern inline function. | |
2940 | If we can't make it inline, pretend | |
2941 | it was only declared. */ | |
2942 | if (DECL_EXTERNAL (decl)) | |
48aba75b | 2943 | { |
ddc9542b AH |
2944 | DECL_INITIAL (decl) = 0; |
2945 | return true; | |
48aba75b | 2946 | } |
854a97f0 | 2947 | } |
ddc9542b AH |
2948 | else { |
2949 | /* ??? Note that we used to just make it look like if | |
2950 | the "inline" keyword was specified when we decide | |
2951 | to inline it (because of -finline-functions). | |
2952 | garloff@suse.de, 2002-04-24: Add another flag to | |
2953 | actually record this piece of information. */ | |
2954 | if (!DECL_INLINE (decl)) | |
2955 | DID_INLINE_FUNC (decl) = 1; | |
2956 | inlinable = DECL_INLINE (decl) = 1; | |
2957 | } | |
a01da83b | 2958 | } |
a18820c6 | 2959 | |
ddc9542b AH |
2960 | insns = get_insns (); |
2961 | ||
2962 | /* Dump the rtl code if we are dumping rtl. */ | |
4291d9c8 | 2963 | |
ddc9542b | 2964 | if (open_dump_file (DFI_rtl, decl)) |
4291d9c8 | 2965 | { |
ddc9542b AH |
2966 | if (DECL_SAVED_INSNS (decl)) |
2967 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
2968 | close_dump_file (DFI_rtl, print_rtl, insns); | |
2969 | } | |
5e1afb11 | 2970 | |
ddc9542b AH |
2971 | /* Convert from NOTE_INSN_EH_REGION style notes, and do other |
2972 | sorts of eh initialization. Delay this until after the | |
2973 | initial rtl dump so that we can see the original nesting. */ | |
2974 | convert_from_eh_region_ranges (); | |
2975 | ||
2976 | /* If function is inline, and we don't yet know whether to | |
2977 | compile it by itself, defer decision till end of compilation. | |
2978 | wrapup_global_declarations will (indirectly) call | |
2979 | rest_of_compilation again for those functions that need to | |
2980 | be output. Also defer those functions that we are supposed | |
2981 | to defer. */ | |
2982 | ||
2983 | if (inlinable | |
2984 | || (DECL_INLINE (decl) | |
2985 | && flag_inline_functions | |
2986 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
2987 | && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) | |
2988 | && ! flag_keep_inline_functions) | |
2989 | || DECL_EXTERNAL (decl)))) | |
2990 | DECL_DEFER_OUTPUT (decl) = 1; | |
854a97f0 | 2991 | |
ddc9542b AH |
2992 | if (DECL_INLINE (decl)) |
2993 | /* DWARF wants separate debugging info for abstract and | |
2994 | concrete instances of all inline functions, including those | |
2995 | declared inline but not inlined, and those inlined even | |
2996 | though they weren't declared inline. Conveniently, that's | |
2997 | what DECL_INLINE means at this point. */ | |
2998 | (*debug_hooks->deferred_inline_function) (decl); | |
2999 | ||
3000 | if (DECL_DEFER_OUTPUT (decl)) | |
3001 | { | |
3002 | /* If -Wreturn-type, we have to do a bit of compilation. We just | |
3003 | want to call cleanup the cfg to figure out whether or not we can | |
3004 | fall off the end of the function; we do the minimum amount of | |
3005 | work necessary to make that safe. */ | |
3006 | if (warn_return_type) | |
2a9a326b | 3007 | { |
ddc9542b | 3008 | int saved_optimize = optimize; |
01f62f01 | 3009 | |
ddc9542b AH |
3010 | optimize = 0; |
3011 | rebuild_jump_labels (insns); | |
3012 | find_exception_handler_labels (); | |
3013 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3014 | cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP); | |
3015 | optimize = saved_optimize; | |
c6a26dc4 | 3016 | |
ddc9542b AH |
3017 | /* CFG is no longer maintained up-to-date. */ |
3018 | free_bb_for_insn (); | |
2a9a326b | 3019 | } |
a3770a81 | 3020 | |
ddc9542b AH |
3021 | set_nothrow_function_flags (); |
3022 | if (current_function_nothrow) | |
3023 | /* Now we know that this can't throw; set the flag for the benefit | |
3024 | of other functions later in this translation unit. */ | |
3025 | TREE_NOTHROW (current_function_decl) = 1; | |
3026 | ||
3027 | timevar_push (TV_INTEGRATION); | |
3028 | save_for_inline (decl); | |
3029 | timevar_pop (TV_INTEGRATION); | |
3030 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; | |
3031 | return true; | |
4291d9c8 RS |
3032 | } |
3033 | ||
ddc9542b AH |
3034 | /* If specified extern inline but we aren't inlining it, we are |
3035 | done. This goes for anything that gets here with DECL_EXTERNAL | |
3036 | set, not just things with DECL_INLINE. */ | |
3037 | return (bool) DECL_EXTERNAL (decl); | |
3038 | } | |
a0134312 | 3039 | |
ddc9542b AH |
3040 | /* Rest of compilation helper to convert the rtl to SSA form. */ |
3041 | static rtx | |
3042 | rest_of_handle_ssa (tree decl, rtx insns) | |
3043 | { | |
3044 | timevar_push (TV_TO_SSA); | |
3045 | open_dump_file (DFI_ssa, decl); | |
a0134312 | 3046 | |
ddc9542b AH |
3047 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
3048 | convert_to_ssa (); | |
a0134312 | 3049 | |
ddc9542b AH |
3050 | close_dump_file (DFI_ssa, print_rtl_with_bb, insns); |
3051 | timevar_pop (TV_TO_SSA); | |
a0134312 | 3052 | |
ddc9542b AH |
3053 | /* Perform sparse conditional constant propagation, if requested. */ |
3054 | if (flag_ssa_ccp) | |
3055 | { | |
3056 | timevar_push (TV_SSA_CCP); | |
3057 | open_dump_file (DFI_ssa_ccp, decl); | |
a0134312 | 3058 | |
ddc9542b AH |
3059 | ssa_const_prop (); |
3060 | ||
3061 | close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ()); | |
3062 | timevar_pop (TV_SSA_CCP); | |
a0134312 RS |
3063 | } |
3064 | ||
ddc9542b AH |
3065 | /* It would be useful to cleanup the CFG at this point, but block |
3066 | merging and possibly other transformations might leave a PHI | |
3067 | node in the middle of a basic block, which is a strict no-no. */ | |
38c1593d | 3068 | |
ddc9542b AH |
3069 | /* The SSA implementation uses basic block numbers in its phi |
3070 | nodes. Thus, changing the control-flow graph or the basic | |
3071 | blocks, e.g., calling find_basic_blocks () or cleanup_cfg (), | |
3072 | may cause problems. */ | |
38c1593d | 3073 | |
ddc9542b AH |
3074 | if (flag_ssa_dce) |
3075 | { | |
3076 | /* Remove dead code. */ | |
38c1593d | 3077 | |
ddc9542b AH |
3078 | timevar_push (TV_SSA_DCE); |
3079 | open_dump_file (DFI_ssa_dce, decl); | |
38c1593d | 3080 | |
ddc9542b AH |
3081 | insns = get_insns (); |
3082 | ssa_eliminate_dead_code (); | |
38c1593d | 3083 | |
ddc9542b AH |
3084 | close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns); |
3085 | timevar_pop (TV_SSA_DCE); | |
3086 | } | |
38c1593d | 3087 | |
ddc9542b | 3088 | /* Convert from SSA form. */ |
38c1593d | 3089 | |
ddc9542b AH |
3090 | timevar_push (TV_FROM_SSA); |
3091 | open_dump_file (DFI_ussa, decl); | |
38c1593d | 3092 | |
ddc9542b AH |
3093 | convert_from_ssa (); |
3094 | /* New registers have been created. Rescan their usage. */ | |
3095 | reg_scan (insns, max_reg_num (), 1); | |
7e51e626 | 3096 | |
ddc9542b AH |
3097 | close_dump_file (DFI_ussa, print_rtl_with_bb, insns); |
3098 | timevar_pop (TV_FROM_SSA); | |
38c1593d | 3099 | |
ddc9542b AH |
3100 | ggc_collect (); |
3101 | ||
3102 | return insns; | |
3103 | } | |
3104 | ||
3105 | /* Try to identify useless null pointer tests and delete them. */ | |
3106 | static void | |
3107 | rest_of_handle_null_pointer (tree decl, rtx insns) | |
3108 | { | |
3109 | open_dump_file (DFI_null, decl); | |
3110 | if (rtl_dump_file) | |
3111 | dump_flow_info (rtl_dump_file); | |
3112 | ||
3113 | if (delete_null_pointer_checks (insns)) | |
3114 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
3115 | ||
3116 | close_dump_file (DFI_null, print_rtl_with_bb, insns); | |
3117 | } | |
3118 | ||
3119 | /* Try combining insns through substitution. */ | |
3120 | static void | |
3121 | rest_of_handle_combine (tree decl, rtx insns) | |
3122 | { | |
3123 | int rebuild_jump_labels_after_combine = 0; | |
3124 | ||
3125 | timevar_push (TV_COMBINE); | |
3126 | open_dump_file (DFI_combine, decl); | |
3127 | ||
3128 | rebuild_jump_labels_after_combine | |
3129 | = combine_instructions (insns, max_reg_num ()); | |
3130 | ||
3131 | /* Combining insns may have turned an indirect jump into a | |
3132 | direct jump. Rebuild the JUMP_LABEL fields of jumping | |
3133 | instructions. */ | |
3134 | if (rebuild_jump_labels_after_combine) | |
3135 | { | |
3136 | timevar_push (TV_JUMP); | |
3137 | rebuild_jump_labels (insns); | |
3138 | timevar_pop (TV_JUMP); | |
3139 | ||
3140 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); | |
38c1593d | 3141 | } |
ddc9542b AH |
3142 | |
3143 | close_dump_file (DFI_combine, print_rtl_with_bb, insns); | |
3144 | timevar_pop (TV_COMBINE); | |
3145 | ||
3146 | ggc_collect (); | |
3147 | } | |
3148 | ||
3149 | /* Perform life analysis. */ | |
3150 | static void | |
3151 | rest_of_handle_life (tree decl, rtx insns) | |
3152 | { | |
3153 | open_dump_file (DFI_life, decl); | |
3154 | regclass_init (); | |
3155 | ||
3156 | #ifdef ENABLE_CHECKING | |
3157 | verify_flow_info (); | |
3158 | #endif | |
3159 | life_analysis (insns, rtl_dump_file, PROP_FINAL); | |
3160 | if (optimize) | |
3161 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_UPDATE_LIFE | |
3162 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
3163 | timevar_pop (TV_FLOW); | |
3164 | ||
3165 | if (warn_uninitialized) | |
0fb53e68 | 3166 | { |
ddc9542b AH |
3167 | uninitialized_vars_warning (DECL_INITIAL (decl)); |
3168 | if (extra_warnings) | |
3169 | setjmp_args_warning (); | |
3170 | } | |
3171 | ||
3172 | if (optimize) | |
3173 | { | |
3174 | if (!flag_new_regalloc && initialize_uninitialized_subregs ()) | |
fc8dfa20 | 3175 | { |
ddc9542b AH |
3176 | /* Insns were inserted, and possibly pseudos created, so |
3177 | things might look a bit different. */ | |
3178 | insns = get_insns (); | |
3179 | allocate_reg_life_data (); | |
3180 | update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, | |
3181 | PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES); | |
fc8dfa20 | 3182 | } |
ddc9542b AH |
3183 | } |
3184 | ||
3185 | no_new_pseudos = 1; | |
3186 | ||
3187 | close_dump_file (DFI_life, print_rtl_with_bb, insns); | |
3188 | ||
3189 | ggc_collect (); | |
3190 | } | |
3191 | ||
3192 | /* Perform common subexpression elimination. Nonzero value from | |
3193 | `cse_main' means that jumps were simplified and some code may now | |
3194 | be unreachable, so do jump optimization again. */ | |
3195 | static void | |
3196 | rest_of_handle_cse (tree decl, rtx insns) | |
3197 | { | |
3198 | int tem; | |
3199 | ||
3200 | open_dump_file (DFI_cse, decl); | |
3201 | if (rtl_dump_file) | |
3202 | dump_flow_info (rtl_dump_file); | |
3203 | timevar_push (TV_CSE); | |
3204 | ||
3205 | reg_scan (insns, max_reg_num (), 1); | |
3206 | ||
3207 | tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
3208 | if (tem) | |
3209 | rebuild_jump_labels (insns); | |
3210 | purge_all_dead_edges (0); | |
3211 | ||
3212 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3213 | ||
3214 | /* If we are not running more CSE passes, then we are no longer | |
3215 | expecting CSE to be run. But always rerun it in a cheap mode. */ | |
3216 | cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse; | |
3217 | ||
3218 | if (tem || optimize > 1) | |
3219 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
3220 | /* Try to identify useless null pointer tests and delete them. */ | |
3221 | if (flag_delete_null_pointer_checks) | |
3222 | { | |
fc8dfa20 | 3223 | timevar_push (TV_JUMP); |
ddc9542b AH |
3224 | |
3225 | if (delete_null_pointer_checks (insns)) | |
3226 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
fc8dfa20 | 3227 | timevar_pop (TV_JUMP); |
0fb53e68 | 3228 | } |
ddc9542b AH |
3229 | |
3230 | /* The second pass of jump optimization is likely to have | |
3231 | removed a bunch more instructions. */ | |
3232 | renumber_insns (rtl_dump_file); | |
3233 | ||
3234 | timevar_pop (TV_CSE); | |
3235 | close_dump_file (DFI_cse, print_rtl_with_bb, insns); | |
3236 | } | |
3237 | ||
3238 | /* Run second CSE pass after loop optimizations. */ | |
3239 | static void | |
3240 | rest_of_handle_cse2 (tree decl, rtx insns) | |
3241 | { | |
3242 | int tem; | |
3243 | ||
3244 | timevar_push (TV_CSE2); | |
3245 | open_dump_file (DFI_cse2, decl); | |
3246 | if (rtl_dump_file) | |
3247 | dump_flow_info (rtl_dump_file); | |
3248 | /* CFG is no longer maintained up-to-date. */ | |
3249 | tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file); | |
3250 | purge_all_dead_edges (0); | |
3251 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3252 | ||
3253 | if (tem) | |
5c856b23 | 3254 | { |
ddc9542b AH |
3255 | timevar_push (TV_JUMP); |
3256 | rebuild_jump_labels (insns); | |
5c856b23 | 3257 | cleanup_cfg (CLEANUP_EXPENSIVE); |
ddc9542b | 3258 | timevar_pop (TV_JUMP); |
5c856b23 | 3259 | } |
ddc9542b AH |
3260 | reg_scan (insns, max_reg_num (), 0); |
3261 | close_dump_file (DFI_cse2, print_rtl_with_bb, insns); | |
3262 | ggc_collect (); | |
3263 | timevar_pop (TV_CSE2); | |
3264 | } | |
38c1593d | 3265 | |
ddc9542b AH |
3266 | /* Perform global cse. */ |
3267 | static void | |
3268 | rest_of_handle_gcse (tree decl, rtx insns) | |
3269 | { | |
3270 | int save_csb, save_cfj; | |
3271 | int tem2 = 0, tem; | |
617b465c | 3272 | |
ddc9542b AH |
3273 | timevar_push (TV_GCSE); |
3274 | open_dump_file (DFI_gcse, decl); | |
617b465c | 3275 | |
ddc9542b AH |
3276 | tem = gcse_main (insns, rtl_dump_file); |
3277 | rebuild_jump_labels (insns); | |
3278 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
617b465c | 3279 | |
ddc9542b AH |
3280 | save_csb = flag_cse_skip_blocks; |
3281 | save_cfj = flag_cse_follow_jumps; | |
3282 | flag_cse_skip_blocks = flag_cse_follow_jumps = 0; | |
b17d5d7c | 3283 | |
ddc9542b AH |
3284 | /* Instantiate any remaining CONSTANT_P_RTX nodes. */ |
3285 | if (current_function_calls_constant_p) | |
3286 | purge_builtin_constant_p (); | |
617b465c | 3287 | |
ddc9542b AH |
3288 | /* If -fexpensive-optimizations, re-run CSE to clean up things done |
3289 | by gcse. */ | |
3290 | if (flag_expensive_optimizations) | |
3291 | { | |
3292 | timevar_push (TV_CSE); | |
3293 | reg_scan (insns, max_reg_num (), 1); | |
3294 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
3295 | purge_all_dead_edges (0); | |
617b465c | 3296 | delete_trivially_dead_insns (insns, max_reg_num ()); |
ddc9542b AH |
3297 | timevar_pop (TV_CSE); |
3298 | cse_not_expected = !flag_rerun_cse_after_loop; | |
617b465c ZD |
3299 | } |
3300 | ||
ddc9542b AH |
3301 | /* If gcse or cse altered any jumps, rerun jump optimizations to clean |
3302 | things up. Then possibly re-run CSE again. */ | |
3303 | while (tem || tem2) | |
c2f006ec | 3304 | { |
ddc9542b AH |
3305 | tem = tem2 = 0; |
3306 | timevar_push (TV_JUMP); | |
3307 | rebuild_jump_labels (insns); | |
3308 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
3309 | timevar_pop (TV_JUMP); | |
735a0e33 | 3310 | |
ddc9542b | 3311 | if (flag_expensive_optimizations) |
032713aa | 3312 | { |
ddc9542b AH |
3313 | timevar_push (TV_CSE); |
3314 | reg_scan (insns, max_reg_num (), 1); | |
3315 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
3316 | purge_all_dead_edges (0); | |
3317 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3318 | timevar_pop (TV_CSE); | |
032713aa | 3319 | } |
032713aa | 3320 | } |
735a0e33 | 3321 | |
ddc9542b AH |
3322 | close_dump_file (DFI_gcse, print_rtl_with_bb, insns); |
3323 | timevar_pop (TV_GCSE); | |
4291d9c8 | 3324 | |
ddc9542b AH |
3325 | ggc_collect (); |
3326 | flag_cse_skip_blocks = save_csb; | |
3327 | flag_cse_follow_jumps = save_cfj; | |
38c1593d JH |
3328 | #ifdef ENABLE_CHECKING |
3329 | verify_flow_info (); | |
3330 | #endif | |
ddc9542b AH |
3331 | } |
3332 | ||
3333 | /* Move constant computations out of loops. */ | |
3334 | static void | |
3335 | rest_of_handle_loop_optimize (tree decl, rtx insns) | |
3336 | { | |
3337 | int do_unroll, do_prefetch; | |
3338 | ||
3339 | timevar_push (TV_LOOP); | |
3340 | delete_dead_jumptables (); | |
3341 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
3342 | open_dump_file (DFI_loop, decl); | |
3343 | ||
3344 | /* CFG is no longer maintained up-to-date. */ | |
3345 | free_bb_for_insn (); | |
3346 | ||
3347 | if (flag_unroll_loops) | |
3348 | do_unroll = 0; /* Having two unrollers is useless. */ | |
3349 | else | |
3350 | do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL; | |
3351 | do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0; | |
3352 | ||
3353 | if (flag_rerun_loop_opt) | |
3354 | { | |
3355 | cleanup_barriers (); | |
3356 | ||
3357 | /* We only want to perform unrolling once. */ | |
3358 | loop_optimize (insns, rtl_dump_file, do_unroll); | |
3359 | do_unroll = 0; | |
3360 | ||
3361 | /* The first call to loop_optimize makes some instructions | |
3362 | trivially dead. We delete those instructions now in the | |
3363 | hope that doing so will make the heuristics in loop work | |
3364 | better and possibly speed up compilation. */ | |
3365 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3366 | ||
3367 | /* The regscan pass is currently necessary as the alias | |
3368 | analysis code depends on this information. */ | |
3369 | reg_scan (insns, max_reg_num (), 1); | |
3370 | } | |
3371 | cleanup_barriers (); | |
3372 | loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch); | |
3373 | ||
3374 | /* Loop can create trivially dead instructions. */ | |
3375 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3376 | close_dump_file (DFI_loop, print_rtl, insns); | |
3377 | timevar_pop (TV_LOOP); | |
3378 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3379 | ||
3380 | ggc_collect (); | |
3381 | } | |
3382 | ||
3383 | /* Perform loop optimalizations. It might be better to do them a bit | |
3384 | sooner, but we want the profile feedback to work more | |
3385 | efficiently. */ | |
3386 | static void | |
3387 | rest_of_handle_loop2 (tree decl, rtx insns) | |
3388 | { | |
3389 | struct loops *loops; | |
3390 | timevar_push (TV_LOOP); | |
3391 | open_dump_file (DFI_loop2, decl); | |
3392 | if (rtl_dump_file) | |
3393 | dump_flow_info (rtl_dump_file); | |
3394 | ||
3395 | loops = loop_optimizer_init (rtl_dump_file); | |
3396 | ||
3397 | if (loops) | |
3398 | { | |
3399 | /* The optimalizations: */ | |
3400 | if (flag_unswitch_loops) | |
3401 | unswitch_loops (loops); | |
3402 | ||
3403 | if (flag_peel_loops || flag_unroll_loops) | |
3404 | unroll_and_peel_loops (loops, | |
3405 | (flag_peel_loops ? UAP_PEEL : 0) | | |
3406 | (flag_unroll_loops ? UAP_UNROLL : 0) | | |
3407 | (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0)); | |
3408 | ||
3409 | loop_optimizer_finalize (loops, rtl_dump_file); | |
3410 | } | |
3411 | ||
3412 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
3413 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3414 | reg_scan (insns, max_reg_num (), 0); | |
3415 | if (rtl_dump_file) | |
3416 | dump_flow_info (rtl_dump_file); | |
3417 | close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ()); | |
3418 | timevar_pop (TV_LOOP); | |
3419 | ggc_collect (); | |
3420 | } | |
3421 | ||
3422 | /* This is called from finish_function (within langhooks.parse_file) | |
3423 | after each top-level definition is parsed. | |
3424 | It is supposed to compile that function or variable | |
3425 | and output the assembler code for it. | |
3426 | After we return, the tree storage is freed. */ | |
3427 | ||
3428 | void | |
e25a75e6 | 3429 | rest_of_compilation (tree decl) |
ddc9542b AH |
3430 | { |
3431 | rtx insns; | |
3432 | int rebuild_label_notes_after_reload; | |
3433 | ||
3434 | timevar_push (TV_REST_OF_COMPILATION); | |
3435 | ||
9ee634e3 JH |
3436 | /* Register rtl specific functions for cfg. */ |
3437 | rtl_register_cfg_hooks (); | |
3438 | ||
ddc9542b AH |
3439 | /* Now that we're out of the frontend, we shouldn't have any more |
3440 | CONCATs anywhere. */ | |
3441 | generating_concat_p = 0; | |
3442 | ||
3443 | /* When processing delayed functions, prepare_function_start() won't | |
3444 | have been run to re-initialize it. */ | |
3445 | cse_not_expected = ! optimize; | |
3446 | ||
3447 | /* First, make sure that NOTE_BLOCK is set correctly for each | |
3448 | NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */ | |
3449 | if (!cfun->x_whole_function_mode_p) | |
3450 | identify_blocks (); | |
3451 | ||
3452 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK | |
3453 | tree in sensible shape. So, we just recalculate it here. */ | |
3454 | if (cfun->x_whole_function_mode_p) | |
3455 | reorder_blocks (); | |
3456 | ||
3457 | init_flow (); | |
3458 | ||
3459 | if (rest_of_handle_inlining (decl)) | |
3460 | goto exit_rest_of_compilation; | |
3461 | ||
3462 | /* If we're emitting a nested function, make sure its parent gets | |
3463 | emitted as well. Doing otherwise confuses debug info. */ | |
3464 | { | |
3465 | tree parent; | |
3466 | for (parent = DECL_CONTEXT (current_function_decl); | |
3467 | parent != NULL_TREE; | |
3468 | parent = get_containing_scope (parent)) | |
3469 | if (TREE_CODE (parent) == FUNCTION_DECL) | |
3470 | TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1; | |
3471 | } | |
3472 | ||
3473 | /* We are now committed to emitting code for this function. Do any | |
3474 | preparation, such as emitting abstract debug info for the inline | |
3475 | before it gets mangled by optimization. */ | |
3476 | if (DECL_INLINE (decl)) | |
3477 | (*debug_hooks->outlining_inline_function) (decl); | |
3478 | ||
3479 | /* Remove any notes we don't need. That will make iterating | |
3480 | over the instruction sequence faster, and allow the garbage | |
3481 | collector to reclaim the memory used by the notes. */ | |
3482 | remove_unnecessary_notes (); | |
3483 | reorder_blocks (); | |
3484 | ||
3485 | ggc_collect (); | |
3486 | ||
3487 | /* Initialize some variables used by the optimizers. */ | |
3488 | init_function_for_compilation (); | |
3489 | ||
3490 | if (! DECL_DEFER_OUTPUT (decl)) | |
3491 | TREE_ASM_WRITTEN (decl) = 1; | |
3492 | ||
3493 | /* Now that integrate will no longer see our rtl, we need not | |
3494 | distinguish between the return value of this function and the | |
3495 | return value of called functions. Also, we can remove all SETs | |
3496 | of subregs of hard registers; they are only here because of | |
3497 | integrate. Also, we can now initialize pseudos intended to | |
3498 | carry magic hard reg data throughout the function. */ | |
3499 | rtx_equal_function_value_matters = 0; | |
3500 | purge_hard_subreg_sets (get_insns ()); | |
3501 | ||
3502 | /* Early return if there were errors. We can run afoul of our | |
3503 | consistency checks, and there's not really much point in fixing them. | |
3504 | Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */ | |
3505 | if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
3506 | || errorcount || sorrycount) | |
3507 | goto exit_rest_of_compilation; | |
3508 | ||
3509 | timevar_push (TV_JUMP); | |
3510 | open_dump_file (DFI_sibling, decl); | |
3511 | insns = get_insns (); | |
3512 | rebuild_jump_labels (insns); | |
3513 | find_exception_handler_labels (); | |
3514 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3515 | ||
3516 | delete_unreachable_blocks (); | |
3517 | ||
3518 | /* We have to issue these warnings now already, because CFG cleanups | |
3519 | further down may destroy the required information. */ | |
3520 | check_function_return_warnings (); | |
3521 | ||
3522 | /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */ | |
3523 | if (flag_guess_branch_prob) | |
3524 | { | |
3525 | timevar_push (TV_BRANCH_PROB); | |
3526 | note_prediction_to_br_prob (); | |
3527 | timevar_pop (TV_BRANCH_PROB); | |
3528 | } | |
3529 | ||
3530 | if (flag_optimize_sibling_calls) | |
3531 | rest_of_handle_sibling_calls (insns); | |
3532 | ||
3533 | timevar_pop (TV_JUMP); | |
3534 | ||
0435312e | 3535 | insn_locators_initialize (); |
ddc9542b AH |
3536 | /* Complete generation of exception handling code. */ |
3537 | if (doing_eh (0)) | |
3538 | { | |
3539 | timevar_push (TV_JUMP); | |
3540 | open_dump_file (DFI_eh, decl); | |
3541 | ||
3542 | finish_eh_generation (); | |
3543 | ||
3544 | close_dump_file (DFI_eh, print_rtl, get_insns ()); | |
3545 | timevar_pop (TV_JUMP); | |
3546 | } | |
3547 | ||
3548 | /* Delay emitting hard_reg_initial_value sets until after EH landing pad | |
3549 | generation, which might create new sets. */ | |
3550 | emit_initial_value_sets (); | |
3551 | ||
3552 | #ifdef FINALIZE_PIC | |
3553 | /* If we are doing position-independent code generation, now | |
3554 | is the time to output special prologues and epilogues. | |
3555 | We do not want to do this earlier, because it just clutters | |
3556 | up inline functions with meaningless insns. */ | |
3557 | if (flag_pic) | |
3558 | FINALIZE_PIC; | |
3559 | #endif | |
3560 | ||
3561 | insns = get_insns (); | |
3562 | ||
3563 | /* Copy any shared structure that should not be shared. */ | |
3564 | unshare_all_rtl (current_function_decl, insns); | |
3565 | ||
3566 | #ifdef SETJMP_VIA_SAVE_AREA | |
3567 | /* This must be performed before virtual register instantiation. | |
3568 | Please be aware the everything in the compiler that can look | |
3569 | at the RTL up to this point must understand that REG_SAVE_AREA | |
3570 | is just like a use of the REG contained inside. */ | |
3571 | if (current_function_calls_alloca) | |
3572 | optimize_save_area_alloca (insns); | |
3573 | #endif | |
3574 | ||
3575 | /* Instantiate all virtual registers. */ | |
3576 | instantiate_virtual_regs (current_function_decl, insns); | |
3577 | ||
3578 | open_dump_file (DFI_jump, decl); | |
3579 | ||
3580 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields | |
3581 | are initialized and to compute whether control can drop off the end | |
3582 | of the function. */ | |
3583 | ||
3584 | timevar_push (TV_JUMP); | |
3585 | /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this | |
3586 | before jump optimization switches branch directions. */ | |
3587 | if (flag_guess_branch_prob) | |
3588 | expected_value_to_br_prob (); | |
3589 | ||
3590 | reg_scan (insns, max_reg_num (), 0); | |
3591 | rebuild_jump_labels (insns); | |
3592 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3593 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3594 | if (rtl_dump_file) | |
3595 | dump_flow_info (rtl_dump_file); | |
3596 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP | |
3597 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
5ece9746 | 3598 | |
ddc9542b | 3599 | if (optimize) |
d29c259b | 3600 | { |
ddc9542b AH |
3601 | free_bb_for_insn (); |
3602 | copy_loop_headers (insns); | |
3603 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
4291d9c8 | 3604 | } |
ddc9542b AH |
3605 | purge_line_number_notes (insns); |
3606 | ||
3607 | timevar_pop (TV_JUMP); | |
3608 | close_dump_file (DFI_jump, print_rtl, insns); | |
3609 | ||
3610 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ | |
3611 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) | |
3612 | goto exit_rest_of_compilation; | |
3613 | ||
3614 | /* Long term, this should probably move before the jump optimizer too, | |
3615 | but I didn't want to disturb the rtl_dump_and_exit and related | |
3616 | stuff at this time. */ | |
3617 | if (optimize > 0 && flag_ssa) | |
3618 | insns = rest_of_handle_ssa (decl, insns); | |
3619 | ||
3620 | timevar_push (TV_JUMP); | |
4291d9c8 | 3621 | |
0626ef8a | 3622 | if (optimize) |
ddc9542b | 3623 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
0626ef8a | 3624 | |
ddc9542b AH |
3625 | if (flag_delete_null_pointer_checks) |
3626 | rest_of_handle_null_pointer (decl, insns); | |
6ff76c36 | 3627 | |
ddc9542b AH |
3628 | /* Jump optimization, and the removal of NULL pointer checks, may |
3629 | have reduced the number of instructions substantially. CSE, and | |
3630 | future passes, allocate arrays whose dimensions involve the | |
3631 | maximum instruction UID, so if we can reduce the maximum UID | |
3632 | we'll save big on memory. */ | |
3633 | renumber_insns (rtl_dump_file); | |
3634 | timevar_pop (TV_JUMP); | |
3635 | ||
3636 | close_dump_file (DFI_jump, print_rtl_with_bb, insns); | |
735a0e33 | 3637 | |
1f8f4a0b | 3638 | ggc_collect (); |
a3770a81 | 3639 | |
ddc9542b AH |
3640 | if (optimize > 0) |
3641 | rest_of_handle_cse (decl, insns); | |
3642 | ||
3643 | rest_of_handle_addresof (decl, insns); | |
3644 | ||
3645 | ggc_collect (); | |
4291d9c8 RS |
3646 | |
3647 | if (optimize > 0) | |
032713aa | 3648 | { |
ddc9542b AH |
3649 | if (flag_gcse) |
3650 | rest_of_handle_gcse (decl, insns); | |
44a76fc8 | 3651 | |
ddc9542b AH |
3652 | if (flag_loop_optimize) |
3653 | rest_of_handle_loop_optimize (decl, insns); | |
61098249 | 3654 | |
ddc9542b AH |
3655 | if (flag_gcse) |
3656 | rest_of_handle_jump_bypass (decl, insns); | |
3657 | } | |
854a97f0 | 3658 | |
ddc9542b | 3659 | timevar_push (TV_FLOW); |
9ec6d7ab | 3660 | |
ddc9542b | 3661 | rest_of_handle_cfg (decl, insns); |
735a0e33 | 3662 | |
ddc9542b AH |
3663 | if (optimize > 0 |
3664 | || profile_arc_flag || flag_test_coverage || flag_branch_probabilities) | |
3665 | rest_of_handle_branch_prob (decl, insns); | |
a3770a81 | 3666 | |
ddc9542b AH |
3667 | if (optimize > 0) |
3668 | rest_of_handle_if_conversion (decl, insns); | |
8c660648 | 3669 | |
ddc9542b AH |
3670 | if (flag_tracer) |
3671 | rest_of_handle_tracer (decl, insns); | |
9ec6d7ab | 3672 | |
ddc9542b AH |
3673 | if (optimize > 0 |
3674 | && (flag_unswitch_loops | |
3675 | || flag_peel_loops | |
3676 | || flag_unroll_loops)) | |
3677 | rest_of_handle_loop2 (decl, insns); | |
9ec6d7ab | 3678 | |
ddc9542b AH |
3679 | if (flag_rerun_cse_after_loop) |
3680 | rest_of_handle_cse2 (decl, insns); | |
9ec6d7ab | 3681 | |
ddc9542b | 3682 | cse_not_expected = 1; |
735a0e33 | 3683 | |
ddc9542b | 3684 | rest_of_handle_life (decl, insns); |
735a0e33 | 3685 | |
ddc9542b AH |
3686 | if (optimize > 0) |
3687 | rest_of_handle_combine (decl, insns); | |
a3770a81 | 3688 | |
ddc9542b AH |
3689 | if (flag_if_conversion) |
3690 | rest_of_handle_if_after_combine (decl, insns); | |
3691 | ||
3692 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) | |
3693 | rest_of_handle_regmove (decl, insns); | |
8c660648 | 3694 | |
22fb740d JH |
3695 | /* Do unconditional splitting before register allocation to allow machine |
3696 | description to add extra information not needed previously. */ | |
3697 | split_all_insns (1); | |
3698 | ||
97d36f45 | 3699 | #ifdef OPTIMIZE_MODE_SWITCHING |
b932f770 | 3700 | timevar_push (TV_MODE_SWITCH); |
97d36f45 | 3701 | |
22fb740d | 3702 | no_new_pseudos = 0; |
38c1593d | 3703 | optimize_mode_switching (NULL); |
22fb740d | 3704 | no_new_pseudos = 1; |
bd675859 | 3705 | |
b932f770 | 3706 | timevar_pop (TV_MODE_SWITCH); |
97d36f45 | 3707 | #endif |
9f09b1f2 | 3708 | |
2382b79f RS |
3709 | /* Any of the several passes since flow1 will have munged register |
3710 | lifetime data a bit. We need it to be up to date for scheduling | |
3711 | (see handling of reg_known_equiv in init_alias_analysis). */ | |
3712 | recompute_reg_usage (insns, !optimize_size); | |
3713 | ||
a2f8629a | 3714 | #ifdef INSN_SCHEDULING |
ddc9542b | 3715 | rest_of_handle_sched (decl, insns); |
a2f8629a | 3716 | #endif |
4291d9c8 | 3717 | |
54ff41b7 JW |
3718 | /* Determine if the current function is a leaf before running reload |
3719 | since this can impact optimizations done by the prologue and | |
3720 | epilogue thus changing register elimination offsets. */ | |
3721 | current_function_is_leaf = leaf_function_p (); | |
3722 | ||
2a9a326b | 3723 | timevar_push (TV_LOCAL_ALLOC); |
61098249 | 3724 | open_dump_file (DFI_lreg, decl); |
246fd41f | 3725 | |
ed8d2920 MM |
3726 | if (flag_new_regalloc) |
3727 | { | |
ddc9542b AH |
3728 | if (rest_of_handle_new_regalloc (decl, insns, |
3729 | &rebuild_label_notes_after_reload)) | |
3730 | goto exit_rest_of_compilation; | |
032713aa | 3731 | } |
ed8d2920 MM |
3732 | else |
3733 | { | |
ddc9542b AH |
3734 | if (rest_of_handle_old_regalloc (decl, insns, |
3735 | &rebuild_label_notes_after_reload)) | |
ed8d2920 MM |
3736 | goto exit_rest_of_compilation; |
3737 | } | |
ab40ad2b | 3738 | |
1f8f4a0b | 3739 | ggc_collect (); |
a3770a81 | 3740 | |
8bb16620 BS |
3741 | open_dump_file (DFI_postreload, decl); |
3742 | ||
c8ed219d RK |
3743 | /* Do a very simple CSE pass over just the hard registers. */ |
3744 | if (optimize > 0) | |
2a9a326b AS |
3745 | { |
3746 | timevar_push (TV_RELOAD_CSE_REGS); | |
3747 | reload_cse_regs (insns); | |
854a97f0 | 3748 | timevar_pop (TV_RELOAD_CSE_REGS); |
2a9a326b | 3749 | } |
c8ed219d | 3750 | |
0edaaa41 HB |
3751 | /* Register allocation and reloading may have turned an indirect jump into |
3752 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3753 | jumping instructions. */ | |
3754 | if (rebuild_label_notes_after_reload) | |
2a9a326b AS |
3755 | { |
3756 | timevar_push (TV_JUMP); | |
3757 | ||
3758 | rebuild_jump_labels (insns); | |
44d3eb5b | 3759 | purge_all_dead_edges (0); |
2a9a326b AS |
3760 | |
3761 | timevar_pop (TV_JUMP); | |
3762 | } | |
0edaaa41 | 3763 | |
8bb16620 | 3764 | close_dump_file (DFI_postreload, print_rtl_with_bb, insns); |
e881bb1b | 3765 | |
6764d250 | 3766 | /* Re-create the death notes which were deleted during reload. */ |
2a9a326b | 3767 | timevar_push (TV_FLOW2); |
61098249 | 3768 | open_dump_file (DFI_flow2, decl); |
2a9a326b | 3769 | |
6f862f2f JH |
3770 | #ifdef ENABLE_CHECKING |
3771 | verify_flow_info (); | |
3772 | #endif | |
0005550b JH |
3773 | |
3774 | /* If optimizing, then go ahead and split insns now. */ | |
10a3fdd9 | 3775 | #ifndef STACK_REGS |
0005550b | 3776 | if (optimize > 0) |
10a3fdd9 | 3777 | #endif |
0005550b JH |
3778 | split_all_insns (0); |
3779 | ||
fe3ad572 SC |
3780 | if (flag_branch_target_load_optimize) |
3781 | { | |
3782 | open_dump_file (DFI_branch_target_load, decl); | |
3783 | ||
3784 | branch_target_load_optimize (insns, false); | |
3785 | ||
3786 | close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns); | |
3787 | ||
3788 | ggc_collect (); | |
3789 | } | |
3790 | ||
f7da1e9a JH |
3791 | if (optimize) |
3792 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
19d3c25c RH |
3793 | |
3794 | /* On some machines, the prologue and epilogue code, or parts thereof, | |
3795 | can be represented as RTL. Doing so lets us schedule insns between | |
3796 | it and the rest of the code and also allows delayed branch | |
3797 | scheduling to operate in the epilogue. */ | |
3798 | thread_prologue_and_epilogue_insns (insns); | |
fe3ad572 | 3799 | epilogue_completed = 1; |
19d3c25c | 3800 | |
6764d250 | 3801 | if (optimize) |
e881bb1b | 3802 | { |
2a9a326b | 3803 | life_analysis (insns, rtl_dump_file, PROP_FINAL); |
96327cdc JH |
3804 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE |
3805 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
1e7f0a48 | 3806 | |
5fa41e13 | 3807 | /* This is kind of a heuristic. We need to run combine_stack_adjustments |
f73ad30e JH |
3808 | even for machines with possibly nonzero RETURN_POPS_ARGS |
3809 | and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having | |
3810 | push instructions will have popping returns. */ | |
3811 | #ifndef PUSH_ROUNDING | |
3812 | if (!ACCUMULATE_OUTGOING_ARGS) | |
1e7f0a48 | 3813 | #endif |
2a9a326b | 3814 | combine_stack_adjustments (); |
1e7f0a48 | 3815 | |
1f8f4a0b | 3816 | ggc_collect (); |
e881bb1b | 3817 | } |
6764d250 | 3818 | |
56744d1a JL |
3819 | flow2_completed = 1; |
3820 | ||
61098249 | 3821 | close_dump_file (DFI_flow2, print_rtl_with_bb, insns); |
2a9a326b | 3822 | timevar_pop (TV_FLOW2); |
e881bb1b | 3823 | |
ede7cd44 RH |
3824 | #ifdef HAVE_peephole2 |
3825 | if (optimize > 0 && flag_peephole2) | |
3826 | { | |
2a9a326b | 3827 | timevar_push (TV_PEEPHOLE2); |
2a9a326b | 3828 | open_dump_file (DFI_peephole2, decl); |
9ec6d7ab | 3829 | |
2a9a326b | 3830 | peephole2_optimize (rtl_dump_file); |
ede7cd44 | 3831 | |
61098249 | 3832 | close_dump_file (DFI_peephole2, print_rtl_with_bb, insns); |
2a9a326b | 3833 | timevar_pop (TV_PEEPHOLE2); |
ede7cd44 RH |
3834 | } |
3835 | #endif | |
3836 | ||
b9422b69 JH |
3837 | if (optimize > 0) |
3838 | { | |
ddc9542b AH |
3839 | if (flag_rename_registers || flag_cprop_registers) |
3840 | rest_of_handle_regrename (decl, insns); | |
b9422b69 | 3841 | |
ddc9542b | 3842 | rest_of_handle_reorder_blocks (decl, insns); |
b9422b69 JH |
3843 | } |
3844 | ||
fa1a0d02 JH |
3845 | if (flag_if_conversion2) |
3846 | { | |
3847 | timevar_push (TV_IFCVT2); | |
3848 | open_dump_file (DFI_ce3, decl); | |
3849 | ||
3850 | if_convert (1); | |
3851 | ||
3852 | close_dump_file (DFI_ce3, print_rtl_with_bb, insns); | |
3853 | timevar_pop (TV_IFCVT2); | |
3854 | } | |
fa1a0d02 | 3855 | |
fe3ad572 SC |
3856 | if (flag_branch_target_load_optimize2) |
3857 | { | |
3858 | /* Leave this a warning for now so that it is possible to experiment | |
3859 | with running this pass twice. In 3.6, we should either make this | |
3860 | an error, or use separate dump files. */ | |
3861 | if (flag_branch_target_load_optimize) | |
3862 | warning ("branch target register load optimization is not intended " | |
3863 | "to be run twice"); | |
3864 | ||
3865 | open_dump_file (DFI_branch_target_load, decl); | |
3866 | ||
3867 | branch_target_load_optimize (insns, true); | |
3868 | ||
3869 | close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns); | |
3870 | ||
3871 | ggc_collect (); | |
3872 | } | |
3873 | ||
375e2d5c | 3874 | #ifdef INSN_SCHEDULING |
4291d9c8 | 3875 | if (optimize > 0 && flag_schedule_insns_after_reload) |
ddc9542b | 3876 | rest_of_handle_sched2 (decl, insns); |
375e2d5c | 3877 | #endif |
4291d9c8 RS |
3878 | |
3879 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3880 | current_function_uses_only_leaf_regs |
3881 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3882 | #endif |
3883 | ||
1e5fd094 | 3884 | #ifdef STACK_REGS |
ddc9542b | 3885 | rest_of_handle_stack_regs (decl, insns); |
1e5fd094 | 3886 | #endif |
ddc9542b | 3887 | |
247a370b | 3888 | compute_alignments (); |
11bdd2ae | 3889 | |
f5143c46 | 3890 | /* CFG is no longer maintained up-to-date. */ |
3c030e88 JH |
3891 | free_bb_for_insn (); |
3892 | ||
18dbd950 | 3893 | if (targetm.machine_dependent_reorg != 0) |
ddc9542b | 3894 | rest_of_handle_machine_reorg (decl, insns); |
2c65021a | 3895 | |
0045d504 | 3896 | purge_line_number_notes (insns); |
01f62f01 | 3897 | cleanup_barriers (); |
0045d504 | 3898 | |
4291d9c8 RS |
3899 | #ifdef DELAY_SLOTS |
3900 | if (optimize > 0 && flag_delayed_branch) | |
ddc9542b | 3901 | rest_of_handle_delay_slots (decl, insns); |
4291d9c8 RS |
3902 | #endif |
3903 | ||
1e5fd094 | 3904 | #if defined (HAVE_ATTR_length) && !defined (STACK_REGS) |
d7e5d7fe | 3905 | timevar_push (TV_SHORTEN_BRANCH); |
6f862f2f | 3906 | split_all_insns_noflow (); |
2a9a326b | 3907 | timevar_pop (TV_SHORTEN_BRANCH); |
932f0847 | 3908 | #endif |
52a11cbf RH |
3909 | |
3910 | convert_to_eh_region_ranges (); | |
932f0847 JH |
3911 | |
3912 | /* Shorten branches. */ | |
3913 | timevar_push (TV_SHORTEN_BRANCH); | |
3914 | shorten_branches (get_insns ()); | |
3915 | timevar_pop (TV_SHORTEN_BRANCH); | |
4291d9c8 | 3916 | |
b6128b8c | 3917 | set_nothrow_function_flags (); |
12a22e76 JM |
3918 | if (current_function_nothrow) |
3919 | /* Now we know that this can't throw; set the flag for the benefit | |
3920 | of other functions later in this translation unit. */ | |
3921 | TREE_NOTHROW (current_function_decl) = 1; | |
fb13d4d0 | 3922 | |
ddc9542b | 3923 | rest_of_handle_final (decl, insns); |
a3770a81 | 3924 | |
854a97f0 | 3925 | /* Write DBX symbols if requested. */ |
4291d9c8 RS |
3926 | |
3927 | /* Note that for those inline functions where we don't initially | |
3928 | know for certain that we will be generating an out-of-line copy, | |
3929 | the first invocation of this routine (rest_of_compilation) will | |
3930 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
2bb74773 DJ |
3931 | Later on, wrapup_global_declarations will (indirectly) call |
3932 | rest_of_compilation again for those inline functions that need | |
3933 | to have out-of-line copies generated. During that call, we | |
3934 | *will* be routed past here. */ | |
4291d9c8 | 3935 | |
2a9a326b | 3936 | timevar_push (TV_SYMOUT); |
2b85879e | 3937 | (*debug_hooks->function_decl) (decl); |
2a9a326b | 3938 | timevar_pop (TV_SYMOUT); |
9a666dda | 3939 | |
4291d9c8 RS |
3940 | exit_rest_of_compilation: |
3941 | ||
ca29da43 | 3942 | coverage_end_function (); |
e25a75e6 | 3943 | |
f246a305 RS |
3944 | /* In case the function was not output, |
3945 | don't leave any temporary anonymous types | |
3946 | queued up for sdb output. */ | |
3947 | #ifdef SDB_DEBUGGING_INFO | |
3948 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3949 | sdbout_types (NULL_TREE); |
f246a305 RS |
3950 | #endif |
3951 | ||
4291d9c8 | 3952 | reload_completed = 0; |
fe3ad572 | 3953 | epilogue_completed = 0; |
56744d1a | 3954 | flow2_completed = 0; |
f1db3576 | 3955 | no_new_pseudos = 0; |
4291d9c8 | 3956 | |
2a9a326b | 3957 | timevar_push (TV_FINAL); |
4291d9c8 | 3958 | |
2a9a326b AS |
3959 | /* Clear out the insn_length contents now that they are no |
3960 | longer valid. */ | |
3961 | init_insn_lengths (); | |
3962 | ||
2a9a326b AS |
3963 | /* Show no temporary slots allocated. */ |
3964 | init_temp_slots (); | |
adcd38c9 | 3965 | |
2a9a326b | 3966 | free_basic_block_vars (0); |
5652450c | 3967 | free_bb_for_insn (); |
fa51b01b | 3968 | |
2a9a326b | 3969 | timevar_pop (TV_FINAL); |
adcd38c9 | 3970 | |
b255a036 JH |
3971 | if ((*targetm.binds_local_p) (current_function_decl)) |
3972 | { | |
3973 | int pref = cfun->preferred_stack_boundary; | |
3974 | if (cfun->recursive_call_emit | |
3975 | && cfun->stack_alignment_needed > cfun->preferred_stack_boundary) | |
3976 | pref = cfun->stack_alignment_needed; | |
3977 | cgraph_rtl_info (current_function_decl)->preferred_incoming_stack_boundary | |
3978 | = pref; | |
3979 | } | |
3980 | ||
c8d86b9a JW |
3981 | /* Make sure volatile mem refs aren't considered valid operands for |
3982 | arithmetic insns. We must call this here if this is a nested inline | |
3983 | function, since the above code leaves us in the init_recog state | |
3984 | (from final.c), and the function context push/pop code does not | |
3985 | save/restore volatile_ok. | |
3986 | ||
3987 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3988 | anymore if we do it here? */ | |
3989 | ||
3990 | init_recog_no_volatile (); | |
3991 | ||
21cd906e | 3992 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3993 | free_after_parsing (cfun); |
fa51b01b | 3994 | if (! DECL_DEFER_OUTPUT (decl)) |
ae6f2a1c ZW |
3995 | { |
3996 | free_after_compilation (cfun); | |
3997 | ||
3998 | /* Clear integrate.c's pointer to the cfun structure we just | |
3999 | destroyed. */ | |
4000 | DECL_SAVED_INSNS (decl) = 0; | |
4001 | } | |
01d939e8 | 4002 | cfun = 0; |
a3770a81 | 4003 | |
1f8f4a0b | 4004 | ggc_collect (); |
a3770a81 | 4005 | |
2a9a326b | 4006 | timevar_pop (TV_REST_OF_COMPILATION); |
4291d9c8 | 4007 | } |
ddc9542b AH |
4008 | |
4009 | /* Display help for generic options. */ | |
d185d268 | 4010 | void |
e25a75e6 | 4011 | display_help (void) |
b8468bc7 | 4012 | { |
854a97f0 KH |
4013 | int undoc; |
4014 | unsigned long i; | |
4015 | const char *lang; | |
4016 | ||
5e4adfba PT |
4017 | printf (_(" -ffixed-<register> Mark <register> as being unavailable to the compiler\n")); |
4018 | printf (_(" -fcall-used-<register> Mark <register> as being corrupted by function calls\n")); | |
4019 | printf (_(" -fcall-saved-<register> Mark <register> as being preserved across functions\n")); | |
4020 | printf (_(" -finline-limit=<number> Limits the size of inlined functions to <number>\n")); | |
4021 | printf (_(" -fmessage-length=<number> Limits diagnostics messages lengths to <number> characters per line. 0 suppresses line-wrapping\n")); | |
e6513023 | 4022 | 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 | 4023 | printf (_(" -ftls-model=[global-dynamic | local-dynamic | initial-exec | local-exec] Indicates the default thread-local storage code generation model\n")); |
a37db56b GK |
4024 | printf (_(" -fstack-limit-register=<register> Trap if the stack goes past <register>\n")); |
4025 | printf (_(" -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>\n")); | |
4026 | printf (_(" -frandom-seed=<string> Make compile reproducible using <string>\n")); | |
e25a75e6 | 4027 | |
b8468bc7 | 4028 | |
b6a1cbae | 4029 | for (i = ARRAY_SIZE (f_options); i--;) |
b8468bc7 | 4030 | { |
854a97f0 KH |
4031 | const char *description = f_options[i].description; |
4032 | ||
9cabb1d8 | 4033 | if (description != NULL && *description != 0) |
b8468bc7 | 4034 | printf (" -f%-21s %s\n", |
a6371940 | 4035 | f_options[i].string, _(description)); |
b8468bc7 | 4036 | } |
854a97f0 | 4037 | |
1737c953 JM |
4038 | printf (_(" -O[number] Set optimization level to [number]\n")); |
4039 | printf (_(" -Os Optimize for space rather than speed\n")); | |
639bc36c | 4040 | for (i = LAST_PARAM; i--;) |
1c4c47db JO |
4041 | { |
4042 | const char *description = compiler_params[i].help; | |
9cabb1d8 | 4043 | const int length = 21 - strlen (compiler_params[i].option); |
1c4c47db | 4044 | |
9cabb1d8 | 4045 | if (description != NULL && *description != 0) |
1c4c47db JO |
4046 | printf (" --param %s=<value>%.*s%s\n", |
4047 | compiler_params[i].option, | |
4048 | length > 0 ? length : 1, " ", | |
a6371940 | 4049 | _(description)); |
1c4c47db | 4050 | } |
89abf8d1 | 4051 | printf (_(" -pedantic Issue warnings needed by strict compliance to ISO C\n")); |
5e4adfba PT |
4052 | printf (_(" -pedantic-errors Like -pedantic except that errors are produced\n")); |
4053 | printf (_(" -w Suppress warnings\n")); | |
854a97f0 | 4054 | |
b6a1cbae | 4055 | for (i = ARRAY_SIZE (W_options); i--;) |
b8468bc7 | 4056 | { |
854a97f0 KH |
4057 | const char *description = W_options[i].description; |
4058 | ||
9cabb1d8 | 4059 | if (description != NULL && *description != 0) |
b8468bc7 | 4060 | printf (" -W%-21s %s\n", |
a6371940 | 4061 | W_options[i].string, _(description)); |
b8468bc7 | 4062 | } |
854a97f0 | 4063 | |
87f85ea0 | 4064 | printf (_(" -Wextra Print extra (possibly unwanted) warnings\n")); |
5e4adfba | 4065 | printf (_(" -Wunused Enable unused warnings\n")); |
5e4adfba PT |
4066 | printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n")); |
4067 | printf (_(" -p Enable function profiling\n")); | |
5e4adfba PT |
4068 | printf (_(" -o <file> Place output into <file> \n")); |
4069 | printf (_("\ | |
4070 | -G <number> Put global and static data smaller than <number>\n\ | |
4071 | bytes into a special section (on some targets)\n")); | |
854a97f0 | 4072 | |
b6a1cbae | 4073 | for (i = ARRAY_SIZE (debug_args); i--;) |
b8468bc7 NC |
4074 | { |
4075 | if (debug_args[i].description != NULL) | |
854a97f0 | 4076 | printf (" -g%-21s %s\n", |
a6371940 | 4077 | debug_args[i].arg, _(debug_args[i].description)); |
b8468bc7 | 4078 | } |
854a97f0 | 4079 | |
c47af4b7 | 4080 | printf (_(" -aux-info <file> Emit declaration info into <file>\n")); |
5e4adfba PT |
4081 | printf (_(" -quiet Do not display functions compiled or elapsed time\n")); |
4082 | printf (_(" -version Display the compiler's version\n")); | |
4083 | printf (_(" -d[letters] Enable dumps from specific passes of the compiler\n")); | |
4084 | printf (_(" -dumpbase <file> Base name to be used for dumps from specific passes\n")); | |
7b5efe21 | 4085 | #if defined INSN_SCHEDULING |
5e4adfba | 4086 | printf (_(" -fsched-verbose=<number> Set the verbosity level of the scheduler\n")); |
b8468bc7 | 4087 | #endif |
5e4adfba | 4088 | printf (_(" --help Display this information\n")); |
b8468bc7 NC |
4089 | |
4090 | undoc = 0; | |
4091 | lang = "language"; | |
854a97f0 | 4092 | |
b8468bc7 NC |
4093 | /* Display descriptions of language specific options. |
4094 | If there is no description, note that there is an undocumented option. | |
4095 | If the description is empty, do not display anything. (This allows | |
4096 | options to be deliberately undocumented, for whatever reason). | |
4097 | If the option string is missing, then this is a marker, indicating | |
630962bf | 4098 | that the description string is in fact the name of a language, whose |
b8468bc7 | 4099 | language specific options are to follow. */ |
854a97f0 | 4100 | |
b6a1cbae | 4101 | if (ARRAY_SIZE (documented_lang_options) > 1) |
b8468bc7 | 4102 | { |
5e4adfba | 4103 | printf (_("\nLanguage specific options:\n")); |
b8468bc7 | 4104 | |
b6a1cbae | 4105 | for (i = 0; i < ARRAY_SIZE (documented_lang_options); i++) |
b8468bc7 | 4106 | { |
854a97f0 KH |
4107 | const char *description = documented_lang_options[i].description; |
4108 | const char *option = documented_lang_options[i].option; | |
b8468bc7 NC |
4109 | |
4110 | if (description == NULL) | |
844642e6 NC |
4111 | { |
4112 | undoc = 1; | |
4113 | ||
4114 | if (extra_warnings) | |
5e4adfba | 4115 | printf (_(" %-23.23s [undocumented]\n"), option); |
844642e6 | 4116 | } |
854a97f0 | 4117 | else if (*description == 0) |
b8468bc7 NC |
4118 | continue; |
4119 | else if (option == NULL) | |
4120 | { | |
4121 | if (undoc) | |
4122 | printf | |
5e4adfba | 4123 | (_("\nThere are undocumented %s specific options as well.\n"), |
b8468bc7 NC |
4124 | lang); |
4125 | undoc = 0; | |
854a97f0 | 4126 | |
5e4adfba | 4127 | printf (_("\n Options for %s:\n"), description); |
b8468bc7 NC |
4128 | |
4129 | lang = description; | |
4130 | } | |
4131 | else | |
a6371940 | 4132 | printf (" %-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
4133 | } |
4134 | } | |
4135 | ||
4136 | if (undoc) | |
854a97f0 KH |
4137 | printf (_("\nThere are undocumented %s specific options as well.\n"), |
4138 | lang); | |
b8468bc7 | 4139 | |
10501d8f CC |
4140 | display_target_options (); |
4141 | } | |
4142 | ||
ddc9542b | 4143 | /* Display help for target options. */ |
d185d268 | 4144 | void |
e25a75e6 | 4145 | display_target_options (void) |
10501d8f | 4146 | { |
a01da83b | 4147 | int undoc, i; |
76306300 NB |
4148 | static bool displayed = false; |
4149 | ||
4150 | /* Avoid double printing for --help --target-help. */ | |
4151 | if (displayed) | |
4152 | return; | |
d185d268 | 4153 | |
76306300 | 4154 | displayed = true; |
10501d8f | 4155 | |
b6a1cbae | 4156 | if (ARRAY_SIZE (target_switches) > 1 |
b8468bc7 | 4157 | #ifdef TARGET_OPTIONS |
b6a1cbae | 4158 | || ARRAY_SIZE (target_options) > 1 |
b8468bc7 NC |
4159 | #endif |
4160 | ) | |
4161 | { | |
4162 | int doc = 0; | |
854a97f0 | 4163 | |
b8468bc7 | 4164 | undoc = 0; |
854a97f0 | 4165 | |
5e4adfba | 4166 | printf (_("\nTarget specific options:\n")); |
b8468bc7 | 4167 | |
b6a1cbae | 4168 | for (i = ARRAY_SIZE (target_switches); i--;) |
b8468bc7 | 4169 | { |
854a97f0 KH |
4170 | const char *option = target_switches[i].name; |
4171 | const char *description = target_switches[i].description; | |
b8468bc7 | 4172 | |
854a97f0 | 4173 | if (option == NULL || *option == 0) |
b8468bc7 NC |
4174 | continue; |
4175 | else if (description == NULL) | |
844642e6 NC |
4176 | { |
4177 | undoc = 1; | |
854a97f0 | 4178 | |
844642e6 | 4179 | if (extra_warnings) |
10501d8f | 4180 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 4181 | } |
9cabb1d8 | 4182 | else if (*description != 0) |
a6371940 | 4183 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 | 4184 | } |
854a97f0 KH |
4185 | |
4186 | #ifdef TARGET_OPTIONS | |
b6a1cbae | 4187 | for (i = ARRAY_SIZE (target_options); i--;) |
b8468bc7 | 4188 | { |
854a97f0 KH |
4189 | const char *option = target_options[i].prefix; |
4190 | const char *description = target_options[i].description; | |
b8468bc7 | 4191 | |
854a97f0 | 4192 | if (option == NULL || *option == 0) |
b8468bc7 NC |
4193 | continue; |
4194 | else if (description == NULL) | |
844642e6 NC |
4195 | { |
4196 | undoc = 1; | |
854a97f0 | 4197 | |
844642e6 | 4198 | if (extra_warnings) |
10501d8f | 4199 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 4200 | } |
9cabb1d8 | 4201 | else if (*description != 0) |
a6371940 | 4202 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
4203 | } |
4204 | #endif | |
4205 | if (undoc) | |
ff59bfe6 JM |
4206 | { |
4207 | if (doc) | |
5e4adfba | 4208 | printf (_("\nThere are undocumented target specific options as well.\n")); |
ff59bfe6 | 4209 | else |
5e4adfba | 4210 | printf (_(" They exist, but they are not documented.\n")); |
ff59bfe6 | 4211 | } |
b8468bc7 NC |
4212 | } |
4213 | } | |
ddc9542b | 4214 | |
f63d1bf7 | 4215 | /* Parse a -d... command line switch. */ |
39dd8003 | 4216 | |
d185d268 | 4217 | void |
e25a75e6 | 4218 | decode_d_option (const char *arg) |
39dd8003 | 4219 | { |
61098249 RH |
4220 | int i, c, matched; |
4221 | ||
4222 | while (*arg) | |
4223 | switch (c = *arg++) | |
39dd8003 NC |
4224 | { |
4225 | case 'a': | |
dbbbbf3b | 4226 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 | 4227 | dump_file[i].enabled = 1; |
39dd8003 NC |
4228 | break; |
4229 | case 'A': | |
4230 | flag_debug_asm = 1; | |
4231 | break; | |
39dd8003 NC |
4232 | case 'p': |
4233 | flag_print_asm_name = 1; | |
4234 | break; | |
c349e40b | 4235 | case 'P': |
9cabb1d8 KH |
4236 | flag_dump_rtl_in_asm = 1; |
4237 | flag_print_asm_name = 1; | |
4238 | break; | |
39dd8003 NC |
4239 | case 'v': |
4240 | graph_dump_format = vcg; | |
4241 | break; | |
39dd8003 NC |
4242 | case 'x': |
4243 | rtl_dump_and_exit = 1; | |
4244 | break; | |
4245 | case 'y': | |
ff45c01e | 4246 | set_yydebug = 1; |
39dd8003 | 4247 | break; |
39dd8003 NC |
4248 | case 'D': /* These are handled by the preprocessor. */ |
4249 | case 'I': | |
4250 | break; | |
886e0865 GK |
4251 | case 'H': |
4252 | setup_core_dumping(); | |
4253 | break; | |
61098249 | 4254 | |
39dd8003 | 4255 | default: |
61098249 | 4256 | matched = 0; |
dbbbbf3b | 4257 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 RH |
4258 | if (c == dump_file[i].debug_switch) |
4259 | { | |
4260 | dump_file[i].enabled = 1; | |
4261 | matched = 1; | |
4262 | } | |
4263 | ||
4264 | if (! matched) | |
4265 | warning ("unrecognized gcc debugging option: %c", c); | |
39dd8003 NC |
4266 | break; |
4267 | } | |
4268 | } | |
b8468bc7 | 4269 | |
f63d1bf7 | 4270 | /* Parse a -f... command line switch. ARG is the value after the -f. |
39dd8003 NC |
4271 | It is safe to access 'ARG - 2' to generate the full switch name. |
4272 | Return the number of strings consumed. */ | |
b8468bc7 NC |
4273 | |
4274 | static int | |
e25a75e6 | 4275 | decode_f_option (const char *arg) |
b8468bc7 | 4276 | { |
39dd8003 | 4277 | int j; |
6f5ef761 | 4278 | const char *option_value = NULL; |
39dd8003 NC |
4279 | |
4280 | /* Search for the option in the table of binary f options. */ | |
b6a1cbae | 4281 | for (j = ARRAY_SIZE (f_options); j--;) |
39dd8003 NC |
4282 | { |
4283 | if (!strcmp (arg, f_options[j].string)) | |
4284 | { | |
4285 | *f_options[j].variable = f_options[j].on_value; | |
4286 | return 1; | |
4287 | } | |
854a97f0 | 4288 | |
39dd8003 NC |
4289 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' |
4290 | && ! strcmp (arg + 3, f_options[j].string)) | |
4291 | { | |
4292 | *f_options[j].variable = ! f_options[j].on_value; | |
4293 | return 1; | |
4294 | } | |
4295 | } | |
b8468bc7 | 4296 | |
de6c5979 | 4297 | if (!strcmp (arg, "fast-math")) |
748d29c1 | 4298 | set_fast_math_flags (1); |
de6c5979 | 4299 | else if (!strcmp (arg, "no-fast-math")) |
748d29c1 | 4300 | set_fast_math_flags (0); |
de6c5979 BL |
4301 | else if ((option_value = skip_leading_substring (arg, "inline-limit-")) |
4302 | || (option_value = skip_leading_substring (arg, "inline-limit="))) | |
c6d9a88c | 4303 | { |
5262d6b6 | 4304 | int val = |
c6d9a88c MM |
4305 | read_integral_parameter (option_value, arg - 2, |
4306 | MAX_INLINE_INSNS); | |
4307 | set_param_value ("max-inline-insns", val); | |
bc522472 KG |
4308 | set_param_value ("max-inline-insns-single", val/2); |
4309 | set_param_value ("max-inline-insns-auto", val/2); | |
4310 | set_param_value ("max-inline-insns-rtl", val); | |
4311 | if (val/4 < MIN_INLINE_INSNS) | |
4312 | { | |
4313 | if (val/4 > 10) | |
4314 | set_param_value ("min-inline-insns", val/4); | |
4315 | else | |
4316 | set_param_value ("min-inline-insns", 10); | |
4317 | } | |
c6d9a88c | 4318 | } |
3d78f2e9 RH |
4319 | else if ((option_value = skip_leading_substring (arg, "tls-model="))) |
4320 | { | |
4321 | if (strcmp (option_value, "global-dynamic") == 0) | |
4322 | flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; | |
4323 | else if (strcmp (option_value, "local-dynamic") == 0) | |
4324 | flag_tls_default = TLS_MODEL_LOCAL_DYNAMIC; | |
4325 | else if (strcmp (option_value, "initial-exec") == 0) | |
4326 | flag_tls_default = TLS_MODEL_INITIAL_EXEC; | |
4327 | else if (strcmp (option_value, "local-exec") == 0) | |
4328 | flag_tls_default = TLS_MODEL_LOCAL_EXEC; | |
4329 | else | |
4330 | warning ("`%s': unknown tls-model option", arg - 2); | |
4331 | } | |
39dd8003 | 4332 | #ifdef INSN_SCHEDULING |
6f5ef761 GDR |
4333 | else if ((option_value = skip_leading_substring (arg, "sched-verbose="))) |
4334 | fix_sched_param ("verbose", option_value); | |
4335 | #endif | |
4336 | else if ((option_value = skip_leading_substring (arg, "fixed-"))) | |
4337 | fix_register (option_value, 1, 1); | |
4338 | else if ((option_value = skip_leading_substring (arg, "call-used-"))) | |
4339 | fix_register (option_value, 0, 1); | |
4340 | else if ((option_value = skip_leading_substring (arg, "call-saved-"))) | |
4341 | fix_register (option_value, 0, 0); | |
4342 | else if ((option_value = skip_leading_substring (arg, "align-loops="))) | |
4343 | align_loops = read_integral_parameter (option_value, arg - 2, align_loops); | |
4344 | else if ((option_value = skip_leading_substring (arg, "align-functions="))) | |
4559fd9e | 4345 | align_functions |
6f5ef761 GDR |
4346 | = read_integral_parameter (option_value, arg - 2, align_functions); |
4347 | else if ((option_value = skip_leading_substring (arg, "align-jumps="))) | |
4348 | align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps); | |
4349 | else if ((option_value = skip_leading_substring (arg, "align-labels="))) | |
4350 | align_labels | |
4351 | = read_integral_parameter (option_value, arg - 2, align_labels); | |
4352 | else if ((option_value | |
854a97f0 | 4353 | = skip_leading_substring (arg, "stack-limit-register="))) |
6f5ef761 GDR |
4354 | { |
4355 | int reg = decode_reg_name (option_value); | |
a157febd | 4356 | if (reg < 0) |
6f5ef761 | 4357 | error ("unrecognized register name `%s'", option_value); |
a157febd GK |
4358 | else |
4359 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
4360 | } | |
6f5ef761 | 4361 | else if ((option_value |
854a97f0 | 4362 | = skip_leading_substring (arg, "stack-limit-symbol="))) |
a157febd | 4363 | { |
520a57c8 | 4364 | const char *nm; |
1f8f4a0b | 4365 | nm = ggc_strdup (option_value); |
a157febd GK |
4366 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm); |
4367 | } | |
764dbbf2 | 4368 | else if ((option_value |
d92b4486 | 4369 | = skip_leading_substring (arg, "message-length="))) |
9596ddd6 GDR |
4370 | output_set_maximum_length |
4371 | (&global_dc->buffer, read_integral_parameter | |
4372 | (option_value, arg - 2, diagnostic_line_cutoff (global_dc))); | |
764dbbf2 | 4373 | else if ((option_value |
854a97f0 | 4374 | = skip_leading_substring (arg, "diagnostics-show-location="))) |
764dbbf2 GDR |
4375 | { |
4376 | if (!strcmp (option_value, "once")) | |
9cabb1d8 | 4377 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; |
764dbbf2 | 4378 | else if (!strcmp (option_value, "every-line")) |
9cabb1d8 KH |
4379 | diagnostic_prefixing_rule (global_dc) |
4380 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
764dbbf2 | 4381 | else |
1f978f5f | 4382 | error ("unrecognized option `%s'", arg - 2); |
764dbbf2 | 4383 | } |
a157febd GK |
4384 | else if (!strcmp (arg, "no-stack-limit")) |
4385 | stack_limit_rtx = NULL_RTX; | |
a37db56b GK |
4386 | else if ((option_value = skip_leading_substring (arg, "random-seed="))) |
4387 | flag_random_seed = option_value; | |
4388 | else if (!strcmp (arg, "no-random-seed")) | |
4389 | flag_random_seed = NULL; | |
39dd8003 | 4390 | else if (!strcmp (arg, "preprocessed")) |
05713b80 | 4391 | /* Recognize this switch but do nothing. This prevents warnings |
4dbba876 | 4392 | about an unrecognized switch if cpplib has not been linked in. */ |
39dd8003 | 4393 | ; |
1f50b029 | 4394 | else |
39dd8003 NC |
4395 | return 0; |
4396 | ||
4397 | return 1; | |
4398 | } | |
4399 | ||
f63d1bf7 | 4400 | /* Parse a -W... command line switch. ARG is the value after the -W. |
39dd8003 NC |
4401 | It is safe to access 'ARG - 2' to generate the full switch name. |
4402 | Return the number of strings consumed. */ | |
4559fd9e | 4403 | |
39dd8003 | 4404 | static int |
e25a75e6 | 4405 | decode_W_option (const char *arg) |
39dd8003 | 4406 | { |
6f5ef761 | 4407 | const char *option_value = NULL; |
39dd8003 | 4408 | int j; |
854a97f0 | 4409 | |
39dd8003 NC |
4410 | /* Search for the option in the table of binary W options. */ |
4411 | ||
b6a1cbae | 4412 | for (j = ARRAY_SIZE (W_options); j--;) |
39dd8003 NC |
4413 | { |
4414 | if (!strcmp (arg, W_options[j].string)) | |
4415 | { | |
4416 | *W_options[j].variable = W_options[j].on_value; | |
4417 | return 1; | |
4418 | } | |
4419 | ||
4420 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4421 | && ! strcmp (arg + 3, W_options[j].string)) | |
4422 | { | |
4423 | *W_options[j].variable = ! W_options[j].on_value; | |
4424 | return 1; | |
4425 | } | |
4426 | } | |
4427 | ||
6f5ef761 | 4428 | if ((option_value = skip_leading_substring (arg, "id-clash-"))) |
84b77836 | 4429 | warning ("-Wid-clash-LEN is no longer supported"); |
6f5ef761 | 4430 | else if ((option_value = skip_leading_substring (arg, "larger-than-"))) |
39dd8003 | 4431 | { |
6f5ef761 | 4432 | larger_than_size = read_integral_parameter (option_value, arg - 2, -1); |
4559fd9e | 4433 | |
e9770d51 | 4434 | warn_larger_than = larger_than_size != -1; |
39dd8003 NC |
4435 | } |
4436 | else | |
b8468bc7 | 4437 | return 0; |
39dd8003 NC |
4438 | |
4439 | return 1; | |
4440 | } | |
4441 | ||
df026186 GK |
4442 | /* Indexed by enum debug_info_type. */ |
4443 | const char *const debug_type_names[] = | |
4444 | { | |
4445 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms" | |
4446 | }; | |
4447 | ||
f63d1bf7 | 4448 | /* Parse a -g... command line switch. ARG is the value after the -g. |
39dd8003 NC |
4449 | It is safe to access 'ARG - 2' to generate the full switch name. |
4450 | Return the number of strings consumed. */ | |
14a774a9 | 4451 | |
39dd8003 | 4452 | static int |
e25a75e6 | 4453 | decode_g_option (const char *arg) |
39dd8003 | 4454 | { |
9cabb1d8 | 4455 | static unsigned level = 0; |
39dd8003 NC |
4456 | /* A lot of code assumes write_symbols == NO_DEBUG if the |
4457 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4458 | of what debugging type has been selected). This records the | |
4459 | selected type. It is an error to specify more than one | |
4460 | debugging type. */ | |
4461 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
272d0bee | 4462 | /* Nonzero if debugging format has been explicitly set. |
39dd8003 NC |
4463 | -g and -ggdb don't explicitly set the debugging format so |
4464 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4465 | static int type_explicitly_set_p = 0; | |
854a97f0 | 4466 | |
39dd8003 NC |
4467 | /* The maximum admissible debug level value. */ |
4468 | static const unsigned max_debug_level = 3; | |
854a97f0 | 4469 | |
39dd8003 NC |
4470 | /* Look up ARG in the table. */ |
4471 | for (da = debug_args; da->arg; da++) | |
4472 | { | |
4473 | const int da_len = strlen (da->arg); | |
4474 | ||
4475 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
4476 | { | |
4477 | enum debug_info_type type = da->debug_type; | |
854a97f0 KH |
4478 | const char *p = arg + da_len; |
4479 | ||
0df6c2c7 | 4480 | if (*p && ! ISDIGIT (*p)) |
39dd8003 | 4481 | continue; |
854a97f0 | 4482 | |
39dd8003 NC |
4483 | /* A debug flag without a level defaults to level 2. |
4484 | Note we do not want to call read_integral_parameter | |
854a97f0 | 4485 | for that case since it will call atoi which |
39dd8003 | 4486 | will return zero. |
854a97f0 KH |
4487 | |
4488 | ??? We may want to generalize the interface to | |
39dd8003 NC |
4489 | read_integral_parameter to better handle this case |
4490 | if this case shows up often. */ | |
4491 | if (*p) | |
4492 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
4493 | else | |
84a5b4f8 | 4494 | level = (level == 0) ? 2 : level; |
854a97f0 | 4495 | |
39dd8003 NC |
4496 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) |
4497 | { | |
4498 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
4499 | level, level); | |
4500 | if (level == 2) | |
4501 | error ("use -gdwarf-2 for DWARF v2"); | |
4502 | } | |
854a97f0 | 4503 | |
39dd8003 NC |
4504 | if (level > max_debug_level) |
4505 | { | |
4506 | warning ("\ | |
4507 | ignoring option `%s' due to invalid debug level specification", | |
4508 | arg - 2); | |
4509 | level = debug_info_level; | |
4510 | } | |
4511 | ||
4512 | if (type == NO_DEBUG) | |
4513 | { | |
4514 | type = PREFERRED_DEBUGGING_TYPE; | |
854a97f0 | 4515 | |
39dd8003 NC |
4516 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) |
4517 | { | |
3fc602a0 | 4518 | #ifdef DWARF2_DEBUGGING_INFO |
39dd8003 NC |
4519 | type = DWARF2_DEBUG; |
4520 | #else | |
4521 | #ifdef DBX_DEBUGGING_INFO | |
4522 | type = DBX_DEBUG; | |
4523 | #endif | |
4524 | #endif | |
4525 | } | |
4526 | } | |
854a97f0 | 4527 | |
39dd8003 | 4528 | if (type == NO_DEBUG) |
14a774a9 | 4529 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4530 | |
4531 | /* Does it conflict with an already selected type? */ | |
4532 | if (type_explicitly_set_p | |
854a97f0 | 4533 | /* -g/-ggdb don't conflict with anything. */ |
39dd8003 NC |
4534 | && da->debug_type != NO_DEBUG |
4535 | && type != selected_debug_type) | |
4536 | warning ("`%s' ignored, conflicts with `-g%s'", | |
4537 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
4538 | else | |
4539 | { | |
4540 | /* If the format has already been set, -g/-ggdb | |
4541 | only change the debug level. */ | |
4542 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
854a97f0 KH |
4543 | /* Don't change debugging type. */ |
4544 | ; | |
39dd8003 NC |
4545 | else |
4546 | { | |
4547 | selected_debug_type = type; | |
4548 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
4549 | } | |
854a97f0 | 4550 | |
39dd8003 NC |
4551 | write_symbols = (level == 0 |
4552 | ? NO_DEBUG | |
4553 | : selected_debug_type); | |
4554 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
4555 | debug_info_level = (enum debug_info_level) level; | |
4556 | } | |
854a97f0 | 4557 | |
39dd8003 NC |
4558 | break; |
4559 | } | |
4560 | } | |
854a97f0 | 4561 | |
39dd8003 | 4562 | if (! da->arg) |
04324727 | 4563 | return 0; |
39dd8003 NC |
4564 | |
4565 | return 1; | |
4566 | } | |
4567 | ||
4568 | /* Decode the first argument in the argv as a language-independent option. | |
319ea138 | 4569 | Return the number of strings consumed. */ |
854a97f0 | 4570 | |
13eb1f7f | 4571 | static unsigned int |
903caebf | 4572 | independent_decode_option (char **argv) |
39dd8003 | 4573 | { |
13eb1f7f | 4574 | char *arg = argv[0]; |
854a97f0 | 4575 | |
39dd8003 | 4576 | if (arg[0] != '-' || arg[1] == 0) |
d7b42618 | 4577 | return 1; |
39dd8003 | 4578 | |
854a97f0 KH |
4579 | arg++; |
4580 | ||
13eb1f7f | 4581 | switch (*arg) |
b8468bc7 | 4582 | { |
39dd8003 NC |
4583 | default: |
4584 | return 0; | |
854a97f0 | 4585 | |
39dd8003 NC |
4586 | case 'f': |
4587 | return decode_f_option (arg + 1); | |
854a97f0 | 4588 | |
39dd8003 | 4589 | case 'g': |
319ea138 | 4590 | return decode_g_option (arg + 1); |
39dd8003 | 4591 | |
39dd8003 | 4592 | case 'W': |
903caebf | 4593 | return decode_W_option (arg + 1); |
b8468bc7 | 4594 | } |
b8468bc7 | 4595 | } |
ddc9542b | 4596 | |
f5e99456 NB |
4597 | /* Decode -m switches. */ |
4598 | /* Decode the switch -mNAME. */ | |
7adfcfed | 4599 | |
903caebf | 4600 | void |
e25a75e6 | 4601 | set_target_switch (const char *name) |
4291d9c8 | 4602 | { |
f5e99456 NB |
4603 | size_t j; |
4604 | int valid_target_option = 0; | |
4291d9c8 | 4605 | |
f5e99456 NB |
4606 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
4607 | if (!strcmp (target_switches[j].name, name)) | |
4608 | { | |
4609 | if (target_switches[j].value < 0) | |
4610 | target_flags &= ~-target_switches[j].value; | |
4611 | else | |
4612 | target_flags |= target_switches[j].value; | |
a27fb29b RS |
4613 | if (name[0] != 0) |
4614 | { | |
4615 | if (target_switches[j].value < 0) | |
4616 | target_flags_explicit |= -target_switches[j].value; | |
4617 | else | |
4618 | target_flags_explicit |= target_switches[j].value; | |
4619 | } | |
f5e99456 NB |
4620 | valid_target_option = 1; |
4621 | } | |
4291d9c8 | 4622 | |
f5e99456 NB |
4623 | #ifdef TARGET_OPTIONS |
4624 | if (!valid_target_option) | |
4625 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
4626 | { | |
4627 | int len = strlen (target_options[j].prefix); | |
c409ea0d | 4628 | if (target_options[j].value) |
f5e99456 | 4629 | { |
c409ea0d DD |
4630 | if (!strcmp (target_options[j].prefix, name)) |
4631 | { | |
4632 | *target_options[j].variable = target_options[j].value; | |
4633 | valid_target_option = 1; | |
4634 | } | |
4635 | } | |
4636 | else | |
4637 | { | |
4638 | if (!strncmp (target_options[j].prefix, name, len)) | |
4639 | { | |
4640 | *target_options[j].variable = name + len; | |
4641 | valid_target_option = 1; | |
4642 | } | |
f5e99456 NB |
4643 | } |
4644 | } | |
4645 | #endif | |
4291d9c8 | 4646 | |
f5e99456 | 4647 | if (!valid_target_option) |
1f978f5f | 4648 | error ("invalid option `%s'", name); |
f5e99456 | 4649 | } |
ddc9542b | 4650 | |
f5e99456 NB |
4651 | /* Print version information to FILE. |
4652 | Each line begins with INDENT (for the case where FILE is the | |
4653 | assembler output file). */ | |
4654 | ||
d185d268 | 4655 | void |
e25a75e6 | 4656 | print_version (FILE *file, const char *indent) |
f5e99456 NB |
4657 | { |
4658 | #ifndef __VERSION__ | |
4659 | #define __VERSION__ "[?]" | |
4660 | #endif | |
4661 | fnotice (file, | |
4662 | #ifdef __GNUC__ | |
4663 | "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n" | |
4664 | #else | |
4665 | "%s%s%s version %s (%s) compiled by CC.\n" | |
4666 | #endif | |
4667 | , indent, *indent != 0 ? " " : "", | |
4668 | lang_hooks.name, version_string, TARGET_NAME, | |
4669 | indent, __VERSION__); | |
7a69a172 GB |
4670 | fnotice (file, "%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n", |
4671 | indent, *indent != 0 ? " " : "", | |
4672 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
f5e99456 NB |
4673 | } |
4674 | ||
4675 | /* Print an option value and return the adjusted position in the line. | |
4676 | ??? We don't handle error returns from fprintf (disk full); presumably | |
4677 | other code will catch a disk full though. */ | |
4678 | ||
4679 | static int | |
e25a75e6 AJ |
4680 | print_single_switch (FILE *file, int pos, int max, |
4681 | const char *indent, const char *sep, const char *term, | |
4682 | const char *type, const char *name) | |
f5e99456 NB |
4683 | { |
4684 | /* The ultrix fprintf returns 0 on success, so compute the result we want | |
4685 | here since we need it for the following test. */ | |
4686 | int len = strlen (sep) + strlen (type) + strlen (name); | |
4687 | ||
4688 | if (pos != 0 | |
4689 | && pos + len > max) | |
4690 | { | |
4691 | fprintf (file, "%s", term); | |
4692 | pos = 0; | |
4693 | } | |
4694 | if (pos == 0) | |
4695 | { | |
4696 | fprintf (file, "%s", indent); | |
4697 | pos = strlen (indent); | |
4698 | } | |
4699 | fprintf (file, "%s%s%s", sep, type, name); | |
4700 | pos += len; | |
4701 | return pos; | |
4702 | } | |
4703 | ||
4704 | /* Print active target switches to FILE. | |
4705 | POS is the current cursor position and MAX is the size of a "line". | |
4706 | Each line begins with INDENT and ends with TERM. | |
4707 | Each switch is separated from the next by SEP. */ | |
4708 | ||
4709 | static void | |
e25a75e6 AJ |
4710 | print_switch_values (FILE *file, int pos, int max, |
4711 | const char *indent, const char *sep, const char *term) | |
f5e99456 NB |
4712 | { |
4713 | size_t j; | |
4714 | char **p; | |
4715 | ||
a37db56b GK |
4716 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
4717 | that it can be printed below. This helps reproducibility. Of | |
4718 | course, the string may never be used, but we can't tell that at | |
4719 | this point in the compile. */ | |
4720 | default_flag_random_seed (); | |
4721 | ||
f5e99456 NB |
4722 | /* Print the options as passed. */ |
4723 | ||
4724 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, | |
4725 | _("options passed: "), ""); | |
4726 | ||
4727 | for (p = &save_argv[1]; *p != NULL; p++) | |
4728 | if (**p == '-') | |
4729 | { | |
4730 | /* Ignore these. */ | |
4731 | if (strcmp (*p, "-o") == 0) | |
4732 | { | |
4733 | if (p[1] != NULL) | |
4734 | p++; | |
4735 | continue; | |
4736 | } | |
4737 | if (strcmp (*p, "-quiet") == 0) | |
4738 | continue; | |
4739 | if (strcmp (*p, "-version") == 0) | |
4740 | continue; | |
4741 | if ((*p)[1] == 'd') | |
4742 | continue; | |
4743 | ||
4744 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
4745 | } | |
4746 | if (pos > 0) | |
4747 | fprintf (file, "%s", term); | |
4748 | ||
4749 | /* Print the -f and -m options that have been enabled. | |
4750 | We don't handle language specific options but printing argv | |
4751 | should suffice. */ | |
4752 | ||
4753 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
4754 | _("options enabled: "), ""); | |
4755 | ||
4756 | for (j = 0; j < ARRAY_SIZE (f_options); j++) | |
4757 | if (*f_options[j].variable == f_options[j].on_value) | |
4758 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4759 | "-f", f_options[j].string); | |
4760 | ||
4761 | /* Print target specific options. */ | |
4762 | ||
4763 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) | |
4764 | if (target_switches[j].name[0] != '\0' | |
4765 | && target_switches[j].value > 0 | |
4766 | && ((target_switches[j].value & target_flags) | |
4767 | == target_switches[j].value)) | |
4768 | { | |
4769 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4770 | "-m", target_switches[j].name); | |
4771 | } | |
4772 | ||
4773 | #ifdef TARGET_OPTIONS | |
4774 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
4775 | if (*target_options[j].variable != NULL) | |
4776 | { | |
4777 | char prefix[256]; | |
4778 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
4779 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4780 | prefix, *target_options[j].variable); | |
4781 | } | |
4782 | #endif | |
4783 | ||
4784 | fprintf (file, "%s", term); | |
4785 | } | |
ddc9542b | 4786 | |
f5e99456 NB |
4787 | /* Open assembly code output file. Do this even if -fsyntax-only is |
4788 | on, because then the driver will have provided the name of a | |
4789 | temporary file or bit bucket for us. NAME is the file specified on | |
4790 | the command line, possibly NULL. */ | |
4791 | static void | |
e25a75e6 | 4792 | init_asm_output (const char *name) |
f5e99456 NB |
4793 | { |
4794 | if (name == NULL && asm_file_name == 0) | |
4795 | asm_out_file = stdout; | |
4796 | else | |
4797 | { | |
4798 | if (asm_file_name == 0) | |
9cabb1d8 KH |
4799 | { |
4800 | int len = strlen (dump_base_name); | |
4801 | char *dumpname = (char *) xmalloc (len + 6); | |
4802 | memcpy (dumpname, dump_base_name, len + 1); | |
4803 | strip_off_ending (dumpname, len); | |
4804 | strcat (dumpname, ".s"); | |
4805 | asm_file_name = dumpname; | |
4806 | } | |
f5e99456 | 4807 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 4808 | asm_out_file = stdout; |
f5e99456 | 4809 | else |
17211ab5 | 4810 | asm_out_file = fopen (asm_file_name, "w+"); |
f5e99456 | 4811 | if (asm_out_file == 0) |
fa6ef813 | 4812 | fatal_error ("can't open %s for writing: %m", asm_file_name); |
f5e99456 NB |
4813 | } |
4814 | ||
4815 | #ifdef IO_BUFFER_SIZE | |
4816 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), | |
9cabb1d8 | 4817 | _IOFBF, IO_BUFFER_SIZE); |
f5e99456 NB |
4818 | #endif |
4819 | ||
4820 | if (!flag_syntax_only) | |
4821 | { | |
1bc7c5b6 | 4822 | targetm.asm_out.file_start (); |
f5e99456 NB |
4823 | |
4824 | #ifdef ASM_COMMENT_START | |
4825 | if (flag_verbose_asm) | |
4826 | { | |
4827 | /* Print the list of options in effect. */ | |
4828 | print_version (asm_out_file, ASM_COMMENT_START); | |
4829 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
4830 | ASM_COMMENT_START, " ", "\n"); | |
4831 | /* Add a blank line here so it appears in assembler output but not | |
4832 | screen output. */ | |
4833 | fprintf (asm_out_file, "\n"); | |
4834 | } | |
4835 | #endif | |
4836 | } | |
4837 | } | |
ddc9542b | 4838 | |
f5e99456 NB |
4839 | /* Initialization of the front end environment, before command line |
4840 | options are parsed. Signal handlers, internationalization etc. | |
4841 | ARGV0 is main's argv[0]. */ | |
4842 | static void | |
e25a75e6 | 4843 | general_init (char *argv0) |
f5e99456 NB |
4844 | { |
4845 | char *p; | |
4846 | ||
4847 | p = argv0 + strlen (argv0); | |
4848 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
4849 | --p; | |
4850 | progname = p; | |
4851 | ||
4852 | xmalloc_set_program_name (progname); | |
e1a132c6 | 4853 | |
5351f1ca NB |
4854 | hex_init (); |
4855 | ||
191bf464 | 4856 | gcc_init_libintl (); |
ab87f8c8 | 4857 | |
a7023245 ZW |
4858 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
4859 | #ifdef SIGSEGV | |
4860 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 4861 | #endif |
a7023245 ZW |
4862 | #ifdef SIGILL |
4863 | signal (SIGILL, crash_signal); | |
4864 | #endif | |
4865 | #ifdef SIGBUS | |
4866 | signal (SIGBUS, crash_signal); | |
4867 | #endif | |
4868 | #ifdef SIGABRT | |
4869 | signal (SIGABRT, crash_signal); | |
4870 | #endif | |
4871 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
4872 | signal (SIGIOT, crash_signal); | |
4873 | #endif | |
15e5ad76 ZW |
4874 | #ifdef SIGFPE |
4875 | signal (SIGFPE, crash_signal); | |
4876 | #endif | |
854a97f0 | 4877 | |
476d9098 GK |
4878 | /* Other host-specific signal setup. */ |
4879 | (*host_hooks.extra_signals)(); | |
4880 | ||
f5e99456 NB |
4881 | /* Initialize the diagnostics reporting machinery, so option parsing |
4882 | can give warnings and errors. */ | |
4883 | diagnostic_initialize (global_dc); | |
c79043f3 NB |
4884 | |
4885 | /* Initialize the garbage-collector, string pools and tree type hash | |
4886 | table. */ | |
4887 | init_ggc (); | |
4888 | init_stringpool (); | |
4889 | init_ttree (); | |
f5e99456 | 4890 | } |
ddc9542b | 4891 | |
f5e99456 | 4892 | /* Parse command line options and set default flag values, called |
a1f300c0 | 4893 | after language-independent option-independent initialization. Do |
f5e99456 | 4894 | minimal options processing. Outputting diagnostics is OK, but GC |
5351f1ca NB |
4895 | and identifier hashtables etc. are not initialized yet. |
4896 | ||
0e9e1e0a | 4897 | Return nonzero to suppress compiler back end initialization. */ |
c79043f3 | 4898 | static void |
e25a75e6 | 4899 | parse_options_and_default_flags (int argc, char **argv) |
f5e99456 | 4900 | { |
2772ef3e | 4901 | int i, lang_mask; |
3ac88239 | 4902 | |
f5e99456 NB |
4903 | /* Save in case md file wants to emit args as a comment. */ |
4904 | save_argc = argc; | |
4905 | save_argv = argv; | |
afe3d090 | 4906 | |
f5e99456 NB |
4907 | /* Initialize register usage now so switches may override. */ |
4908 | init_reg_sets (); | |
764dbbf2 | 4909 | |
c6d9a88c MM |
4910 | /* Register the language-independent parameters. */ |
4911 | add_params (lang_independent_params, LAST_PARAM); | |
4912 | ||
9ac121af KG |
4913 | /* This must be done after add_params but before argument processing. */ |
4914 | init_ggc_heuristics(); | |
4915 | ||
eaec9b3d | 4916 | /* Perform language-specific options initialization. */ |
2772ef3e | 4917 | lang_mask = (*lang_hooks.init_options) (); |
b53beeb2 | 4918 | |
4291d9c8 RS |
4919 | /* Scan to see what optimization level has been specified. That will |
4920 | determine the default value of many flags. */ | |
4921 | for (i = 1; i < argc; i++) | |
4922 | { | |
4923 | if (!strcmp (argv[i], "-O")) | |
4924 | { | |
4925 | optimize = 1; | |
16b6e120 | 4926 | optimize_size = 0; |
4291d9c8 RS |
4927 | } |
4928 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4929 | { | |
c6aded7c | 4930 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 | 4931 | char *p = &argv[i][2]; |
854a97f0 | 4932 | |
c6aded7c | 4933 | if ((p[0] == 's') && (p[1] == 0)) |
16b6e120 NC |
4934 | { |
4935 | optimize_size = 1; | |
854a97f0 KH |
4936 | |
4937 | /* Optimizing for size forces optimize to be 2. */ | |
16b6e120 NC |
4938 | optimize = 2; |
4939 | } | |
c6aded7c | 4940 | else |
854a97f0 | 4941 | { |
192babfd TP |
4942 | const int optimize_val = read_integral_parameter (p, p - 2, -1); |
4943 | if (optimize_val != -1) | |
16b6e120 | 4944 | { |
192babfd | 4945 | optimize = optimize_val; |
16b6e120 NC |
4946 | optimize_size = 0; |
4947 | } | |
c6aded7c | 4948 | } |
4291d9c8 RS |
4949 | } |
4950 | } | |
4951 | ||
201556f0 JJ |
4952 | if (!optimize) |
4953 | { | |
4954 | flag_merge_constants = 0; | |
4955 | } | |
4956 | ||
4291d9c8 RS |
4957 | if (optimize >= 1) |
4958 | { | |
6731a3e3 | 4959 | flag_defer_pop = 1; |
4291d9c8 RS |
4960 | flag_thread_jumps = 1; |
4961 | #ifdef DELAY_SLOTS | |
4962 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4963 | #endif |
4964 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4965 | flag_omit_frame_pointer = 1; | |
4291d9c8 | 4966 | #endif |
3ff51205 | 4967 | flag_guess_branch_prob = 1; |
57d1019b | 4968 | flag_cprop_registers = 1; |
96327cdc JH |
4969 | flag_loop_optimize = 1; |
4970 | flag_crossjumping = 1; | |
2c4b77f3 JH |
4971 | flag_if_conversion = 1; |
4972 | flag_if_conversion2 = 1; | |
4291d9c8 RS |
4973 | } |
4974 | ||
4975 | if (optimize >= 2) | |
4976 | { | |
db8cb48e | 4977 | flag_optimize_sibling_calls = 1; |
4291d9c8 | 4978 | flag_cse_follow_jumps = 1; |
8b3686ed | 4979 | flag_cse_skip_blocks = 1; |
7506f491 | 4980 | flag_gcse = 1; |
4291d9c8 RS |
4981 | flag_expensive_optimizations = 1; |
4982 | flag_strength_reduce = 1; | |
4983 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4984 | flag_rerun_loop_opt = 1; |
ac266247 | 4985 | flag_caller_saves = 1; |
4ac8e06e | 4986 | flag_force_mem = 1; |
ede7cd44 | 4987 | flag_peephole2 = 1; |
4291d9c8 RS |
4988 | #ifdef INSN_SCHEDULING |
4989 | flag_schedule_insns = 1; | |
4990 | flag_schedule_insns_after_reload = 1; | |
4991 | #endif | |
8c660648 | 4992 | flag_regmove = 1; |
3f9a83a9 | 4993 | flag_strict_aliasing = 1; |
b6d24183 | 4994 | flag_delete_null_pointer_checks = 1; |
58d8c980 | 4995 | flag_reorder_blocks = 1; |
194734e9 | 4996 | flag_reorder_functions = 1; |
4291d9c8 RS |
4997 | } |
4998 | ||
7e89c3a3 RK |
4999 | if (optimize >= 3) |
5000 | { | |
5001 | flag_inline_functions = 1; | |
2b2a8f1f | 5002 | flag_rename_registers = 1; |
617b465c | 5003 | flag_unswitch_loops = 1; |
e2483ef7 | 5004 | flag_unit_at_a_time = 1; |
7e89c3a3 RK |
5005 | } |
5006 | ||
efa3896a GK |
5007 | if (optimize < 2 || optimize_size) |
5008 | { | |
5009 | align_loops = 1; | |
5010 | align_jumps = 1; | |
5011 | align_labels = 1; | |
5012 | align_functions = 1; | |
de273d3f RH |
5013 | |
5014 | /* Don't reorder blocks when optimizing for size because extra | |
5015 | jump insns may be created; also barrier may create extra padding. | |
5016 | ||
5017 | More correctly we should have a block reordering mode that tried | |
5018 | to minimize the combined size of all the jumps. This would more | |
5019 | or less automatically remove extra jumps, but would also try to | |
5020 | use more short jumps instead of long jumps. */ | |
5021 | flag_reorder_blocks = 0; | |
efa3896a GK |
5022 | } |
5023 | ||
f5e99456 NB |
5024 | /* Initialize whether `char' is signed. */ |
5025 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
5026 | #ifdef DEFAULT_SHORT_ENUMS | |
5027 | /* Initialize how much space enums occupy, by default. */ | |
5028 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
5029 | #endif | |
5030 | ||
c1da383f DE |
5031 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
5032 | modify it. */ | |
5033 | target_flags = 0; | |
5034 | set_target_switch (""); | |
5035 | ||
fc85e1ad | 5036 | /* Unwind tables are always present in an ABI-conformant IA-64 |
854a97f0 | 5037 | object file, so the default should be ON. */ |
fc85e1ad AH |
5038 | #ifdef IA64_UNWIND_INFO |
5039 | flag_unwind_tables = IA64_UNWIND_INFO; | |
5040 | #endif | |
5041 | ||
4291d9c8 RS |
5042 | #ifdef OPTIMIZATION_OPTIONS |
5043 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 5044 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
5045 | #endif |
5046 | ||
39dd8003 NC |
5047 | /* Perform normal command line switch decoding. */ |
5048 | for (i = 1; i < argc;) | |
4291d9c8 | 5049 | { |
57883c53 MM |
5050 | int lang_processed; |
5051 | int indep_processed; | |
f88b51fc | 5052 | |
39dd8003 | 5053 | /* Give the language a chance to decode the option for itself. */ |
2772ef3e | 5054 | lang_processed = handle_option (argc - i, argv + i, lang_mask); |
43a8f6d5 | 5055 | |
57883c53 MM |
5056 | if (lang_processed >= 0) |
5057 | /* Now see if the option also has a language independent meaning. | |
5058 | Some options are both language specific and language independent, | |
5059 | eg --help. */ | |
903caebf | 5060 | indep_processed = independent_decode_option (argv + i); |
57883c53 MM |
5061 | else |
5062 | { | |
5063 | lang_processed = -lang_processed; | |
5064 | indep_processed = 0; | |
5065 | } | |
39dd8003 NC |
5066 | |
5067 | if (lang_processed || indep_processed) | |
04324727 | 5068 | i += MAX (lang_processed, indep_processed); |
39dd8003 | 5069 | else |
43a8f6d5 | 5070 | { |
854a97f0 KH |
5071 | const char *option = NULL; |
5072 | const char *lang = NULL; | |
0c70c30f | 5073 | unsigned int j; |
854a97f0 | 5074 | |
0c70c30f NC |
5075 | /* It is possible that the command line switch is not valid for the |
5076 | current language, but it is valid for another language. In order | |
5077 | to be compatible with previous versions of the compiler (which | |
5078 | did not issue an error message in this case) we check for this | |
bc83ee59 | 5079 | possibility here. If we do find a match, then if extra_warnings |
0c70c30f NC |
5080 | is set we generate a warning message, otherwise we will just |
5081 | ignore the option. */ | |
b6a1cbae | 5082 | for (j = 0; j < ARRAY_SIZE (documented_lang_options); j++) |
0c70c30f NC |
5083 | { |
5084 | option = documented_lang_options[j].option; | |
854a97f0 | 5085 | |
0c70c30f NC |
5086 | if (option == NULL) |
5087 | lang = documented_lang_options[j].description; | |
5088 | else if (! strncmp (argv[i], option, strlen (option))) | |
5089 | break; | |
5090 | } | |
5091 | ||
b6a1cbae | 5092 | if (j != ARRAY_SIZE (documented_lang_options)) |
0c70c30f NC |
5093 | { |
5094 | if (extra_warnings) | |
5095 | { | |
1f978f5f | 5096 | warning ("ignoring command line option '%s'", argv[i]); |
0c70c30f | 5097 | if (lang) |
04324727 | 5098 | warning |
1f978f5f | 5099 | ("(it is valid for %s but not the selected language)", |
04324727 | 5100 | lang); |
0c70c30f NC |
5101 | } |
5102 | } | |
337aa8ed | 5103 | else if (argv[i][0] == '-' && argv[i][1] == 'g') |
04324727 | 5104 | warning ("`%s': unknown or unsupported -g option", &argv[i][2]); |
0c70c30f | 5105 | else |
1f978f5f | 5106 | error ("unrecognized option `%s'", argv[i]); |
854a97f0 | 5107 | |
43a8f6d5 JM |
5108 | i++; |
5109 | } | |
4291d9c8 | 5110 | } |
854a97f0 | 5111 | |
24a4dd31 JJ |
5112 | if (flag_pie) |
5113 | flag_pic = flag_pie; | |
5114 | if (flag_pic && !flag_pie) | |
5115 | flag_shlib = 1; | |
5116 | ||
b0148884 JM |
5117 | if (flag_no_inline == 2) |
5118 | flag_no_inline = 0; | |
5119 | else | |
5120 | flag_really_no_inline = flag_no_inline; | |
5121 | ||
a32274ad NB |
5122 | /* Set flag_no_inline before the post_options () hook. The C front |
5123 | ends use it to determine tree inlining defaults. FIXME: such | |
5124 | code should be lang-independent when all front ends use tree | |
5125 | inlining, in which case it, and this condition, should be moved | |
5126 | to the top of process_options() instead. */ | |
f246a305 RS |
5127 | if (optimize == 0) |
5128 | { | |
a2468e45 BK |
5129 | /* Inlining does not work if not optimizing, |
5130 | so force it not to be done. */ | |
f246a305 RS |
5131 | flag_no_inline = 1; |
5132 | warn_inline = 0; | |
a2468e45 | 5133 | |
ee811cfd | 5134 | /* The c_decode_option function and decode_option hook set |
a2468e45 BK |
5135 | this to `2' if -Wall is used, so we can avoid giving out |
5136 | lots of errors for people who don't realize what -Wall does. */ | |
5137 | if (warn_uninitialized == 1) | |
5138 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
5139 | } |
5140 | ||
b0148884 JM |
5141 | if (flag_really_no_inline == 2) |
5142 | flag_really_no_inline = flag_no_inline; | |
a32274ad | 5143 | } |
ddc9542b | 5144 | |
a32274ad NB |
5145 | /* Process the options that have been parsed. */ |
5146 | static void | |
e25a75e6 | 5147 | process_options (void) |
a32274ad | 5148 | { |
4bfec483 NB |
5149 | /* Allow the front end to perform consistency checks and do further |
5150 | initialization based on the command line options. This hook also | |
5151 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
5152 | so we can correctly initialize debug output. */ | |
d7b42618 NB |
5153 | no_backend = (*lang_hooks.post_options) (&main_input_filename); |
5154 | input_filename = main_input_filename; | |
4bfec483 | 5155 | |
4291d9c8 RS |
5156 | #ifdef OVERRIDE_OPTIONS |
5157 | /* Some machines may reject certain combinations of options. */ | |
5158 | OVERRIDE_OPTIONS; | |
5159 | #endif | |
5160 | ||
b1cbe78c NB |
5161 | /* Set aux_base_name if not already set. */ |
5162 | if (aux_base_name) | |
5163 | ; | |
d7b42618 | 5164 | else if (main_input_filename) |
b1cbe78c | 5165 | { |
d7b42618 | 5166 | char *name = xstrdup (lbasename (main_input_filename)); |
e25a75e6 | 5167 | |
b1cbe78c NB |
5168 | strip_off_ending (name, strlen (name)); |
5169 | aux_base_name = name; | |
5170 | } | |
5171 | else | |
5172 | aux_base_name = "gccaux"; | |
5173 | ||
efa3896a GK |
5174 | /* Set up the align_*_log variables, defaulting them to 1 if they |
5175 | were still unset. */ | |
5176 | if (align_loops <= 0) align_loops = 1; | |
2cca7283 JH |
5177 | if (align_loops_max_skip > align_loops || !align_loops) |
5178 | align_loops_max_skip = align_loops - 1; | |
854a97f0 | 5179 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
efa3896a | 5180 | if (align_jumps <= 0) align_jumps = 1; |
2cca7283 JH |
5181 | if (align_jumps_max_skip > align_jumps || !align_jumps) |
5182 | align_jumps_max_skip = align_jumps - 1; | |
854a97f0 | 5183 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
efa3896a | 5184 | if (align_labels <= 0) align_labels = 1; |
854a97f0 | 5185 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
2cca7283 JH |
5186 | if (align_labels_max_skip > align_labels || !align_labels) |
5187 | align_labels_max_skip = align_labels - 1; | |
efa3896a | 5188 | if (align_functions <= 0) align_functions = 1; |
854a97f0 KH |
5189 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
5190 | ||
4291d9c8 RS |
5191 | /* Unrolling all loops implies that standard loop unrolling must also |
5192 | be done. */ | |
5193 | if (flag_unroll_all_loops) | |
5194 | flag_unroll_loops = 1; | |
b17d5d7c ZD |
5195 | |
5196 | if (flag_unroll_loops) | |
5197 | { | |
5198 | flag_old_unroll_loops = 0; | |
5199 | flag_old_unroll_all_loops = 0; | |
5200 | } | |
5201 | ||
5202 | if (flag_old_unroll_all_loops) | |
5203 | flag_old_unroll_loops = 1; | |
5204 | ||
5205 | /* Old loop unrolling requires that strength_reduction be on also. Silently | |
4291d9c8 RS |
5206 | turn on strength reduction here if it isn't already on. Also, the loop |
5207 | unrolling code assumes that cse will be run after loop, so that must | |
5208 | be turned on also. */ | |
b17d5d7c | 5209 | if (flag_old_unroll_loops) |
4291d9c8 RS |
5210 | { |
5211 | flag_strength_reduce = 1; | |
5212 | flag_rerun_cse_after_loop = 1; | |
5213 | } | |
b17d5d7c ZD |
5214 | if (flag_unroll_loops || flag_peel_loops) |
5215 | flag_rerun_cse_after_loop = 1; | |
4291d9c8 | 5216 | |
b932f770 JH |
5217 | if (flag_non_call_exceptions) |
5218 | flag_asynchronous_unwind_tables = 1; | |
5219 | if (flag_asynchronous_unwind_tables) | |
5220 | flag_unwind_tables = 1; | |
5221 | ||
e72fcfe8 JH |
5222 | /* Disable unit-at-a-time mode for frontends not supporting callgraph |
5223 | interface. */ | |
5224 | if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function) | |
5225 | flag_unit_at_a_time = 0; | |
5226 | ||
4291d9c8 RS |
5227 | /* Warn about options that are not supported on this machine. */ |
5228 | #ifndef INSN_SCHEDULING | |
5229 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
5230 | warning ("instruction scheduling not supported on this target machine"); | |
5231 | #endif | |
5232 | #ifndef DELAY_SLOTS | |
5233 | if (flag_delayed_branch) | |
5234 | warning ("this target machine does not have delayed branches"); | |
5235 | #endif | |
5236 | ||
19283265 RH |
5237 | user_label_prefix = USER_LABEL_PREFIX; |
5238 | if (flag_leading_underscore != -1) | |
5239 | { | |
854a97f0 | 5240 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
5241 | issue a warning and ignore this option. */ |
5242 | if (user_label_prefix[0] == 0 || | |
5243 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
5244 | { | |
5245 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
5246 | } | |
5247 | else | |
5248 | warning ("-f%sleading-underscore not supported on this target machine", | |
5249 | flag_leading_underscore ? "" : "no-"); | |
5250 | } | |
5251 | ||
4291d9c8 RS |
5252 | /* If we are in verbose mode, write out the version and maybe all the |
5253 | option flags in use. */ | |
5254 | if (version_flag) | |
5255 | { | |
3d5cdd42 | 5256 | print_version (stderr, ""); |
4291d9c8 | 5257 | if (! quiet_flag) |
3d5cdd42 | 5258 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
5259 | } |
5260 | ||
f5e99456 NB |
5261 | if (flag_syntax_only) |
5262 | { | |
5263 | write_symbols = NO_DEBUG; | |
5264 | profile_flag = 0; | |
f5e99456 | 5265 | } |
4291d9c8 | 5266 | |
f5e99456 NB |
5267 | /* Now we know write_symbols, set up the debug hooks based on it. |
5268 | By default we do nothing for debug output. */ | |
5269 | #if defined(DBX_DEBUGGING_INFO) | |
5270 | if (write_symbols == DBX_DEBUG) | |
5271 | debug_hooks = &dbx_debug_hooks; | |
4291d9c8 | 5272 | #endif |
f5e99456 NB |
5273 | #if defined(XCOFF_DEBUGGING_INFO) |
5274 | if (write_symbols == XCOFF_DEBUG) | |
5275 | debug_hooks = &xcoff_debug_hooks; | |
3d5cdd42 | 5276 | #endif |
f5e99456 NB |
5277 | #ifdef SDB_DEBUGGING_INFO |
5278 | if (write_symbols == SDB_DEBUG) | |
5279 | debug_hooks = &sdb_debug_hooks; | |
5280 | #endif | |
5281 | #ifdef DWARF_DEBUGGING_INFO | |
5282 | if (write_symbols == DWARF_DEBUG) | |
5283 | debug_hooks = &dwarf_debug_hooks; | |
5284 | #endif | |
5285 | #ifdef DWARF2_DEBUGGING_INFO | |
5286 | if (write_symbols == DWARF2_DEBUG) | |
5287 | debug_hooks = &dwarf2_debug_hooks; | |
3d5cdd42 | 5288 | #endif |
7a0c8d71 DR |
5289 | #ifdef VMS_DEBUGGING_INFO |
5290 | if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
5291 | debug_hooks = &vmsdbg_debug_hooks; | |
5292 | #endif | |
4291d9c8 | 5293 | |
f5e99456 NB |
5294 | /* If auxiliary info generation is desired, open the output file. |
5295 | This goes in the same directory as the source file--unlike | |
5296 | all the other output files. */ | |
5297 | if (flag_gen_aux_info) | |
5298 | { | |
5299 | aux_info_file = fopen (aux_info_file_name, "w"); | |
5300 | if (aux_info_file == 0) | |
fa6ef813 | 5301 | fatal_error ("can't open %s: %m", aux_info_file_name); |
f5e99456 | 5302 | } |
309a8875 | 5303 | |
f5e99456 | 5304 | if (! targetm.have_named_sections) |
4291d9c8 | 5305 | { |
f5e99456 NB |
5306 | if (flag_function_sections) |
5307 | { | |
4d6baafa | 5308 | warning ("-ffunction-sections not supported for this target"); |
f5e99456 NB |
5309 | flag_function_sections = 0; |
5310 | } | |
5311 | if (flag_data_sections) | |
5312 | { | |
4d6baafa | 5313 | warning ("-fdata-sections not supported for this target"); |
f5e99456 NB |
5314 | flag_data_sections = 0; |
5315 | } | |
4291d9c8 | 5316 | } |
f5e99456 | 5317 | |
8456b95a | 5318 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 5319 | { |
4d6baafa | 5320 | warning ("-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 5321 | flag_function_sections = 0; |
3d5cdd42 | 5322 | } |
f5e99456 | 5323 | |
0dd0e980 JH |
5324 | #ifndef HAVE_prefetch |
5325 | if (flag_prefetch_loop_arrays) | |
5326 | { | |
5327 | warning ("-fprefetch-loop-arrays not supported for this target"); | |
5328 | flag_prefetch_loop_arrays = 0; | |
5329 | } | |
5330 | #else | |
5331 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
5332 | { | |
5333 | warning ("-fprefetch-loop-arrays not supported for this target (try -march switches)"); | |
5334 | flag_prefetch_loop_arrays = 0; | |
5335 | } | |
5336 | #endif | |
5337 | ||
1398974c JJ |
5338 | /* This combination of options isn't handled for i386 targets and doesn't |
5339 | make much sense anyway, so don't allow it. */ | |
5340 | if (flag_prefetch_loop_arrays && optimize_size) | |
5341 | { | |
5342 | warning ("-fprefetch-loop-arrays is not supported with -Os"); | |
5343 | flag_prefetch_loop_arrays = 0; | |
5344 | } | |
5345 | ||
f5e99456 NB |
5346 | #ifndef OBJECT_FORMAT_ELF |
5347 | if (flag_function_sections && write_symbols != NO_DEBUG) | |
4d6baafa | 5348 | warning ("-ffunction-sections may affect debugging on some targets"); |
f5e99456 | 5349 | #endif |
52bfebf0 RS |
5350 | |
5351 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
5352 | if (flag_signaling_nans) | |
5353 | flag_trapping_math = 1; | |
4291d9c8 | 5354 | } |
ddc9542b | 5355 | |
c79043f3 | 5356 | /* Initialize the compiler back end. */ |
f5e99456 | 5357 | static void |
e25a75e6 | 5358 | backend_init (void) |
f5e99456 | 5359 | { |
6cde4876 JL |
5360 | /* init_emit_once uses reg_raw_mode and therefore must be called |
5361 | after init_regs which initialized reg_raw_mode. */ | |
5362 | init_regs (); | |
f5e99456 NB |
5363 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
5364 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
7a0c8d71 DR |
5365 | #ifdef VMS_DEBUGGING_INFO |
5366 | /* Enable line number info for traceback */ | |
5367 | || debug_info_level > DINFO_LEVEL_NONE | |
5368 | #endif | |
5369 | || flag_test_coverage | |
5370 | || warn_notreached); | |
6cde4876 | 5371 | init_fake_stack_mems (); |
f5e99456 | 5372 | init_alias_once (); |
f5e99456 NB |
5373 | init_loop (); |
5374 | init_reload (); | |
5375 | init_function_once (); | |
f5e99456 | 5376 | init_varasm_once (); |
f5e99456 NB |
5377 | |
5378 | /* The following initialization functions need to generate rtl, so | |
5379 | provide a dummy function context for them. */ | |
5380 | init_dummy_function_start (); | |
5381 | init_expmed (); | |
f5e99456 NB |
5382 | if (flag_caller_saves) |
5383 | init_caller_save (); | |
5384 | expand_dummy_function_end (); | |
5385 | } | |
ddc9542b | 5386 | |
0e9e1e0a | 5387 | /* Language-dependent initialization. Returns nonzero on success. */ |
22703ccc | 5388 | static int |
e25a75e6 | 5389 | lang_dependent_init (const char *name) |
4291d9c8 | 5390 | { |
f5e99456 NB |
5391 | if (dump_base_name == 0) |
5392 | dump_base_name = name ? name : "gccdump"; | |
26182e15 | 5393 | |
4bfec483 NB |
5394 | /* Other front-end initialization. */ |
5395 | if ((*lang_hooks.init) () == 0) | |
22703ccc | 5396 | return 0; |
4291d9c8 | 5397 | |
f5e99456 | 5398 | init_asm_output (name); |
3d5cdd42 | 5399 | |
f5e99456 NB |
5400 | /* These create various _DECL nodes, so need to be called after the |
5401 | front end is initialized. */ | |
5402 | init_eh (); | |
5403 | init_optabs (); | |
7ab0121e JW |
5404 | |
5405 | /* The following initialization functions need to generate rtl, so | |
5406 | provide a dummy function context for them. */ | |
5407 | init_dummy_function_start (); | |
1f8c3c5b | 5408 | init_expr_once (); |
7ab0121e | 5409 | expand_dummy_function_end (); |
3d5cdd42 | 5410 | |
f5e99456 NB |
5411 | /* If dbx symbol table desired, initialize writing it and output the |
5412 | predefined types. */ | |
5413 | timevar_push (TV_SYMOUT); | |
4291d9c8 | 5414 | |
f5e99456 NB |
5415 | #ifdef DWARF2_UNWIND_INFO |
5416 | if (dwarf2out_do_frame ()) | |
5417 | dwarf2out_frame_init (); | |
5418 | #endif | |
4291d9c8 | 5419 | |
f5e99456 NB |
5420 | /* Now we have the correct original filename, we can initialize |
5421 | debug output. */ | |
5422 | (*debug_hooks->init) (name); | |
4291d9c8 | 5423 | |
f5e99456 | 5424 | timevar_pop (TV_SYMOUT); |
22703ccc NB |
5425 | |
5426 | return 1; | |
5427 | } | |
ddc9542b | 5428 | |
22703ccc NB |
5429 | /* Clean up: close opened files, etc. */ |
5430 | ||
5431 | static void | |
e25a75e6 | 5432 | finalize (void) |
22703ccc NB |
5433 | { |
5434 | /* Close the dump files. */ | |
5435 | if (flag_gen_aux_info) | |
5436 | { | |
5437 | fclose (aux_info_file); | |
5438 | if (errorcount) | |
5439 | unlink (aux_info_file_name); | |
5440 | } | |
5441 | ||
5442 | /* Close non-debugging input and output files. Take special care to note | |
5443 | whether fclose returns an error, since the pages might still be on the | |
5444 | buffer chain while the file is open. */ | |
5445 | ||
5446 | if (asm_out_file) | |
5447 | { | |
5448 | if (ferror (asm_out_file) != 0) | |
fa6ef813 | 5449 | fatal_error ("error writing to %s: %m", asm_file_name); |
22703ccc | 5450 | if (fclose (asm_out_file) != 0) |
fa6ef813 | 5451 | fatal_error ("error closing %s: %m", asm_file_name); |
22703ccc NB |
5452 | } |
5453 | ||
5454 | /* Do whatever is necessary to finish printing the graphs. */ | |
5455 | if (graph_dump_format != no_graph) | |
5456 | { | |
5457 | int i; | |
5458 | ||
5459 | for (i = 0; i < (int) DFI_MAX; ++i) | |
5460 | if (dump_file[i].initialized && dump_file[i].graph_dump_p) | |
5461 | { | |
5462 | char seq[16]; | |
5463 | char *suffix; | |
5464 | ||
6baf9874 | 5465 | sprintf (seq, DUMPFILE_FORMAT, i); |
22703ccc NB |
5466 | suffix = concat (seq, dump_file[i].extension, NULL); |
5467 | finish_graph_dump_file (dump_base_name, suffix); | |
5468 | free (suffix); | |
5469 | } | |
5470 | } | |
5471 | ||
5472 | if (mem_report) | |
5473 | { | |
5474 | ggc_print_statistics (); | |
5475 | stringpool_statistics (); | |
5476 | dump_tree_statistics (); | |
5477 | } | |
5478 | ||
5479 | /* Free up memory for the benefit of leak detectors. */ | |
5480 | free_reg_info (); | |
5481 | ||
5482 | /* Language-specific end of compilation actions. */ | |
5483 | (*lang_hooks.finish) (); | |
f5e99456 | 5484 | } |
ddc9542b | 5485 | |
4d6baafa NB |
5486 | /* Initialize the compiler, and compile the input file. */ |
5487 | static void | |
e25a75e6 | 5488 | do_compile (void) |
f5e99456 | 5489 | { |
09b04f2d NB |
5490 | /* Initialize timing first. The C front ends read the main file in |
5491 | the post_options hook, and C++ does file timings. */ | |
5492 | if (time_report || !quiet_flag || flag_detailed_statistics) | |
5493 | timevar_init (); | |
a9915c78 RK |
5494 | timevar_start (TV_TOTAL); |
5495 | ||
09b04f2d NB |
5496 | process_options (); |
5497 | ||
5498 | /* Don't do any more if an error has already occurred. */ | |
5499 | if (!errorcount) | |
5500 | { | |
5501 | /* Set up the back-end if requested. */ | |
5502 | if (!no_backend) | |
5503 | backend_init (); | |
f5e99456 | 5504 | |
09b04f2d | 5505 | /* Language-dependent initialization. Returns true on success. */ |
d7b42618 | 5506 | if (lang_dependent_init (main_input_filename)) |
09b04f2d | 5507 | compile_file (); |
f5e99456 | 5508 | |
09b04f2d NB |
5509 | finalize (); |
5510 | } | |
f5e99456 NB |
5511 | |
5512 | /* Stop timing and print the times. */ | |
5513 | timevar_stop (TV_TOTAL); | |
5514 | timevar_print (stderr); | |
4d6baafa | 5515 | } |
ddc9542b | 5516 | |
4d6baafa NB |
5517 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
5518 | Decode command args, then call compile_file. | |
5519 | Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
5520 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
5521 | ||
5522 | It is not safe to call this function more than once. */ | |
5523 | ||
5524 | int | |
e25a75e6 | 5525 | toplev_main (int argc, char **argv) |
4d6baafa NB |
5526 | { |
5527 | /* Initialization of GCC's environment, and diagnostics. */ | |
9cabb1d8 | 5528 | general_init (argv[0]); |
4d6baafa NB |
5529 | |
5530 | /* Parse the options and do minimal processing; basically just | |
5531 | enough to default flags appropriately. */ | |
c79043f3 | 5532 | parse_options_and_default_flags (argc, argv); |
4d6baafa NB |
5533 | |
5534 | /* Exit early if we can (e.g. -help). */ | |
c79043f3 | 5535 | if (!exit_after_options) |
09b04f2d | 5536 | do_compile (); |
f5e99456 NB |
5537 | |
5538 | if (errorcount || sorrycount) | |
5539 | return (FATAL_EXIT_CODE); | |
5540 | ||
5541 | return (SUCCESS_EXIT_CODE); | |
4291d9c8 | 5542 | } |