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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 | ||
b86f6cd9 | 107 | static void general_init (const char *); |
e25a75e6 AJ |
108 | static void do_compile (void); |
109 | static void process_options (void); | |
110 | static void backend_init (void); | |
111 | static int lang_dependent_init (const char *); | |
112 | static void init_asm_output (const char *); | |
113 | static void finalize (void); | |
114 | ||
e25a75e6 AJ |
115 | static void crash_signal (int) ATTRIBUTE_NORETURN; |
116 | static void setup_core_dumping (void); | |
117 | static void compile_file (void); | |
e25a75e6 | 118 | |
e25a75e6 AJ |
119 | static int print_single_switch (FILE *, int, int, const char *, |
120 | const char *, const char *, | |
121 | const char *, const char *); | |
122 | static void print_switch_values (FILE *, int, int, const char *, | |
123 | const char *, const char *); | |
735a0e33 | 124 | |
ddc9542b AH |
125 | /* Rest of compilation helper functions. */ |
126 | static bool rest_of_handle_inlining (tree); | |
127 | static rtx rest_of_handle_ssa (tree, rtx); | |
128 | static void rest_of_handle_cse (tree, rtx); | |
129 | static void rest_of_handle_cse2 (tree, rtx); | |
130 | static void rest_of_handle_gcse (tree, rtx); | |
131 | static void rest_of_handle_life (tree, rtx); | |
132 | static void rest_of_handle_loop_optimize (tree, rtx); | |
133 | static void rest_of_handle_loop2 (tree, rtx); | |
134 | static void rest_of_handle_jump_bypass (tree, rtx); | |
135 | static void rest_of_handle_sibling_calls (rtx); | |
136 | static void rest_of_handle_null_pointer (tree, rtx); | |
f129791c | 137 | static void rest_of_handle_addressof (tree, rtx); |
ddc9542b AH |
138 | static void rest_of_handle_cfg (tree, rtx); |
139 | static void rest_of_handle_branch_prob (tree, rtx); | |
140 | static void rest_of_handle_if_conversion (tree, rtx); | |
141 | static void rest_of_handle_if_after_combine (tree, rtx); | |
142 | static void rest_of_handle_tracer (tree, rtx); | |
143 | static void rest_of_handle_combine (tree, rtx); | |
144 | static void rest_of_handle_regmove (tree, rtx); | |
ddc9542b | 145 | #ifdef INSN_SCHEDULING |
a2f8629a | 146 | static void rest_of_handle_sched (tree, rtx); |
ddc9542b AH |
147 | static void rest_of_handle_sched2 (tree, rtx); |
148 | #endif | |
149 | static bool rest_of_handle_new_regalloc (tree, rtx, int *); | |
150 | static bool rest_of_handle_old_regalloc (tree, rtx, int *); | |
151 | static void rest_of_handle_regrename (tree, rtx); | |
152 | static void rest_of_handle_reorder_blocks (tree, rtx); | |
153 | #ifdef STACK_REGS | |
154 | static void rest_of_handle_stack_regs (tree, rtx); | |
155 | #endif | |
156 | static void rest_of_handle_machine_reorg (tree, rtx); | |
157 | #ifdef DELAY_SLOTS | |
158 | static void rest_of_handle_delay_slots (tree, rtx); | |
159 | #endif | |
160 | static void rest_of_handle_final (tree, rtx); | |
161 | ||
ff45c01e NB |
162 | /* Nonzero to dump debug info whilst parsing (-dy option). */ |
163 | static int set_yydebug; | |
164 | ||
4bfec483 NB |
165 | /* True if we don't need a backend (e.g. preprocessing only). */ |
166 | static bool no_backend; | |
167 | ||
3d5cdd42 DE |
168 | /* Length of line when printing switch values. */ |
169 | #define MAX_LINE 75 | |
170 | ||
4291d9c8 RS |
171 | /* Name of program invoked, sans directories. */ |
172 | ||
7adfcfed | 173 | const char *progname; |
4291d9c8 | 174 | |
b86f6cd9 NB |
175 | /* Copy of argument vector to toplev_main. */ |
176 | static const char **save_argv; | |
ddc9542b | 177 | |
4291d9c8 RS |
178 | /* Name of top-level original source file (what was input to cpp). |
179 | This comes from the #-command at the beginning of the actual input. | |
180 | If there isn't any there, then this is the cc1 input file name. */ | |
181 | ||
3b304f5b | 182 | const char *main_input_filename; |
4291d9c8 | 183 | |
6060edcb | 184 | /* Current position in real source file. */ |
4291d9c8 | 185 | |
6060edcb | 186 | location_t input_location; |
4291d9c8 | 187 | |
f1db3576 JL |
188 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
189 | int no_new_pseudos; | |
190 | ||
4291d9c8 RS |
191 | /* Stack of currently pending input files. */ |
192 | ||
193 | struct file_stack *input_file_stack; | |
194 | ||
195 | /* Incremented on each change to input_file_stack. */ | |
196 | int input_file_stack_tick; | |
197 | ||
4291d9c8 RS |
198 | /* Name to use as base of names for dump output files. */ |
199 | ||
87e11268 | 200 | const char *dump_base_name; |
4291d9c8 | 201 | |
ea67fe71 NS |
202 | /* Name to use as a base for auxiliary output files. */ |
203 | ||
d185d268 | 204 | const char *aux_base_name; |
ea67fe71 | 205 | |
6baf9874 DR |
206 | /* Format to use to print dumpfile index value */ |
207 | #ifndef DUMPFILE_FORMAT | |
208 | #define DUMPFILE_FORMAT ".%02d." | |
209 | #endif | |
210 | ||
4291d9c8 RS |
211 | /* Bit flags that specify the machine subtype we are compiling for. |
212 | Bits are tested using macros TARGET_... defined in the tm.h file | |
213 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
214 | ||
215 | extern int target_flags; | |
216 | ||
a27fb29b RS |
217 | /* A mask of target_flags that includes bit X if X was set or cleared |
218 | on the command line. */ | |
219 | ||
220 | int target_flags_explicit; | |
221 | ||
a51d908e NB |
222 | /* Debug hooks - dependent upon command line options. */ |
223 | ||
54b6670a | 224 | const struct gcc_debug_hooks *debug_hooks = &do_nothing_debug_hooks; |
a51d908e | 225 | |
61098249 RH |
226 | /* Describes a dump file. */ |
227 | ||
228 | struct dump_file_info | |
229 | { | |
230 | /* The unique extension to apply, e.g. ".jump". */ | |
854a97f0 | 231 | const char *const extension; |
61098249 RH |
232 | |
233 | /* The -d<c> character that enables this dump file. */ | |
234 | char const debug_switch; | |
235 | ||
236 | /* True if there is a corresponding graph dump file. */ | |
237 | char const graph_dump_p; | |
238 | ||
239 | /* True if the user selected this dump. */ | |
240 | char enabled; | |
241 | ||
242 | /* True if the files have been initialized (ie truncated). */ | |
243 | char initialized; | |
244 | }; | |
245 | ||
246 | /* Enumerate the extant dump files. */ | |
247 | ||
248 | enum dump_file_index | |
249 | { | |
a194aa56 | 250 | DFI_cgraph, |
61098249 | 251 | DFI_rtl, |
48d9ade5 | 252 | DFI_sibling, |
52a11cbf | 253 | DFI_eh, |
61098249 | 254 | DFI_jump, |
61098249 | 255 | DFI_ssa, |
0b47e4c1 | 256 | DFI_ssa_ccp, |
62d285ff | 257 | DFI_ssa_dce, |
61098249 | 258 | DFI_ussa, |
38c1593d | 259 | DFI_null, |
0826f1d8 JL |
260 | DFI_cse, |
261 | DFI_addressof, | |
61098249 RH |
262 | DFI_gcse, |
263 | DFI_loop, | |
a0134312 | 264 | DFI_bypass, |
51891abe | 265 | DFI_cfg, |
61098249 | 266 | DFI_bp, |
0fb53e68 | 267 | DFI_ce1, |
5c856b23 | 268 | DFI_tracer, |
617b465c | 269 | DFI_loop2, |
38c1593d | 270 | DFI_cse2, |
51891abe | 271 | DFI_life, |
61098249 | 272 | DFI_combine, |
0fb53e68 | 273 | DFI_ce2, |
61098249 RH |
274 | DFI_regmove, |
275 | DFI_sched, | |
276 | DFI_lreg, | |
277 | DFI_greg, | |
8bb16620 | 278 | DFI_postreload, |
61098249 RH |
279 | DFI_flow2, |
280 | DFI_peephole2, | |
5fa41e13 | 281 | DFI_rnreg, |
b9422b69 | 282 | DFI_bbro, |
c079e6fe | 283 | DFI_ce3, |
fe3ad572 | 284 | DFI_branch_target_load, |
61098249 | 285 | DFI_sched2, |
1e5fd094 | 286 | DFI_stack, |
61098249 RH |
287 | DFI_mach, |
288 | DFI_dbr, | |
61098249 RH |
289 | DFI_MAX |
290 | }; | |
291 | ||
292 | /* Describes all the dump files. Should be kept in order of the | |
9ec6d7ab RH |
293 | pass and in sync with dump_file_index above. |
294 | ||
295 | Remaining -d letters: | |
296 | ||
fe651b1d | 297 | " m q " |
a194aa56 | 298 | " JK O Q V YZ" |
9ec6d7ab | 299 | */ |
61098249 | 300 | |
c083a819 | 301 | static struct dump_file_info dump_file[DFI_MAX] = |
61098249 | 302 | { |
a194aa56 | 303 | { "cgraph", 'U', 0, 0, 0 }, |
61098249 | 304 | { "rtl", 'r', 0, 0, 0 }, |
48d9ade5 | 305 | { "sibling", 'i', 0, 0, 0 }, |
52a11cbf | 306 | { "eh", 'h', 0, 0, 0 }, |
61098249 | 307 | { "jump", 'j', 0, 0, 0 }, |
61098249 | 308 | { "ssa", 'e', 1, 0, 0 }, |
0b47e4c1 | 309 | { "ssaccp", 'W', 1, 0, 0 }, |
62d285ff | 310 | { "ssadce", 'X', 1, 0, 0 }, |
61098249 | 311 | { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
38c1593d | 312 | { "null", 'u', 0, 0, 0 }, |
0826f1d8 JL |
313 | { "cse", 's', 0, 0, 0 }, |
314 | { "addressof", 'F', 0, 0, 0 }, | |
61098249 RH |
315 | { "gcse", 'G', 1, 0, 0 }, |
316 | { "loop", 'L', 1, 0, 0 }, | |
a0134312 | 317 | { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
51891abe | 318 | { "cfg", 'f', 1, 0, 0 }, |
61098249 | 319 | { "bp", 'b', 1, 0, 0 }, |
a9a4005f | 320 | { "ce1", 'C', 1, 0, 0 }, |
5c856b23 | 321 | { "tracer", 'T', 1, 0, 0 }, |
617b465c | 322 | { "loop2", 'L', 1, 0, 0 }, |
38c1593d | 323 | { "cse2", 't', 1, 0, 0 }, |
51891abe | 324 | { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 325 | { "combine", 'c', 1, 0, 0 }, |
0fb53e68 | 326 | { "ce2", 'C', 1, 0, 0 }, |
61098249 RH |
327 | { "regmove", 'N', 1, 0, 0 }, |
328 | { "sched", 'S', 1, 0, 0 }, | |
329 | { "lreg", 'l', 1, 0, 0 }, | |
330 | { "greg", 'g', 1, 0, 0 }, | |
8bb16620 | 331 | { "postreload", 'o', 1, 0, 0 }, |
61098249 RH |
332 | { "flow2", 'w', 1, 0, 0 }, |
333 | { "peephole2", 'z', 1, 0, 0 }, | |
5fa41e13 | 334 | { "rnreg", 'n', 1, 0, 0 }, |
b9422b69 | 335 | { "bbro", 'B', 1, 0, 0 }, |
c079e6fe | 336 | { "ce3", 'E', 1, 0, 0 }, |
fe3ad572 | 337 | { "btl", 'd', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 338 | { "sched2", 'R', 1, 0, 0 }, |
1e5fd094 | 339 | { "stack", 'k', 1, 0, 0 }, |
61098249 RH |
340 | { "mach", 'M', 1, 0, 0 }, |
341 | { "dbr", 'd', 0, 0, 0 }, | |
61098249 RH |
342 | }; |
343 | ||
e25a75e6 AJ |
344 | static int open_dump_file (enum dump_file_index, tree); |
345 | static void close_dump_file (enum dump_file_index, | |
346 | void (*) (FILE *, rtx), rtx); | |
61098249 RH |
347 | |
348 | /* Other flags saying which kinds of debugging dump have been requested. */ | |
349 | ||
350 | int rtl_dump_and_exit; | |
351 | int flag_print_asm_name; | |
735a0e33 | 352 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
353 | |
354 | /* Name for output file of assembly code, specified with -o. */ | |
355 | ||
d185d268 | 356 | const char *asm_file_name; |
4291d9c8 RS |
357 | |
358 | /* Type(s) of debugging information we are producing (if any). | |
359 | See flags.h for the definitions of the different possible | |
360 | types of debugging information. */ | |
361 | enum debug_info_type write_symbols = NO_DEBUG; | |
362 | ||
363 | /* Level of debugging information we are producing. See flags.h | |
364 | for the definitions of the different possible levels. */ | |
365 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
366 | ||
a53d0bcc RS |
367 | /* Nonzero means use GNU-only extensions in the generated symbolic |
368 | debugging information. */ | |
369 | /* Currently, this only has an effect when write_symbols is set to | |
370 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
371 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
372 | |
373 | /* Nonzero means do optimizations. -O. | |
374 | Particular numeric values stand for particular amounts of optimization; | |
375 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
376 | ones are not controlled directly by this variable. Instead, they are | |
377 | controlled by individual `flag_...' variables that are defaulted | |
378 | based on this variable. */ | |
379 | ||
380 | int optimize = 0; | |
381 | ||
c6aded7c | 382 | /* Nonzero means optimize for size. -Os. |
0e9e1e0a KH |
383 | The only valid values are zero and nonzero. When optimize_size is |
384 | nonzero, optimize defaults to 2, but certain individual code | |
c6aded7c AG |
385 | bloating optimizations are disabled. */ |
386 | ||
387 | int optimize_size = 0; | |
388 | ||
00262c8a ML |
389 | /* The FUNCTION_DECL for the function currently being compiled, |
390 | or 0 if between functions. */ | |
391 | tree current_function_decl; | |
392 | ||
393 | /* Set to the FUNC_BEGIN label of the current function, or NULL_TREE | |
394 | if none. */ | |
395 | tree current_function_func_begin_label; | |
396 | ||
881c6935 JM |
397 | /* Nonzero if doing dwarf2 duplicate elimination. */ |
398 | ||
399 | int flag_eliminate_dwarf2_dups = 0; | |
400 | ||
73c68f61 SS |
401 | /* Nonzero if doing unused type elimination. */ |
402 | ||
9552a3e3 | 403 | int flag_eliminate_unused_debug_types = 1; |
73c68f61 | 404 | |
6a08f7b3 DP |
405 | /* Nonzero means emit debugging information only for symbols which are used. */ |
406 | int flag_debug_only_used_symbols = 0; | |
407 | ||
4291d9c8 RS |
408 | /* Nonzero if generating code to do profiling. */ |
409 | ||
410 | int profile_flag = 0; | |
411 | ||
0d332add DE |
412 | /* Nonzero if generating code to profile program flow graph arcs. */ |
413 | ||
414 | int profile_arc_flag = 0; | |
415 | ||
af166e5d ZD |
416 | /* Nonzero if value histograms should be measured. */ |
417 | ||
418 | int flag_profile_values = 0; | |
419 | ||
0d332add DE |
420 | /* Nonzero if generating info for gcov to calculate line test coverage. */ |
421 | ||
422 | int flag_test_coverage = 0; | |
423 | ||
424 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
425 | ||
426 | int flag_branch_probabilities = 0; | |
427 | ||
854a97f0 | 428 | /* Nonzero if basic blocks should be reordered. */ |
11bdd2ae SC |
429 | |
430 | int flag_reorder_blocks = 0; | |
431 | ||
194734e9 JH |
432 | /* Nonzero if functions should be reordered. */ |
433 | ||
434 | int flag_reorder_functions = 0; | |
435 | ||
854a97f0 | 436 | /* Nonzero if registers should be renamed. */ |
7b82b5da SC |
437 | |
438 | int flag_rename_registers = 0; | |
8582c27b | 439 | int flag_cprop_registers = 0; |
7b82b5da | 440 | |
4291d9c8 RS |
441 | /* Nonzero for -pedantic switch: warn about anything |
442 | that standard spec forbids. */ | |
443 | ||
444 | int pedantic = 0; | |
445 | ||
446 | /* Temporarily suppress certain warnings. | |
447 | This is set while reading code from a system header file. */ | |
448 | ||
449 | int in_system_header = 0; | |
450 | ||
fba0bfd4 | 451 | /* Don't print functions as they are compiled. -quiet. */ |
4291d9c8 RS |
452 | |
453 | int quiet_flag = 0; | |
fba0bfd4 ZW |
454 | |
455 | /* Print times taken by the various passes. -ftime-report. */ | |
456 | ||
6ff3a151 | 457 | int time_report = 0; |
fba0bfd4 ZW |
458 | |
459 | /* Print memory still in use at end of compilation (which may have little | |
460 | to do with peak memory consumption). -fmem-report. */ | |
461 | ||
462 | int mem_report = 0; | |
463 | ||
272d0bee | 464 | /* Nonzero means to collect statistics which might be expensive |
0e5921e8 ZW |
465 | and to print them when we are done. */ |
466 | int flag_detailed_statistics = 0; | |
467 | ||
4ed43216 | 468 | /* A random sequence of characters, unless overridden by user. */ |
c07e5477 NS |
469 | const char *flag_random_seed; |
470 | ||
471 | /* A local time stamp derived from the time of compilation. It will be | |
472 | zero if the system cannot provide a time. It will be -1u, if the | |
473 | user has specified a particular random seed. */ | |
474 | unsigned local_tick; | |
475 | ||
4291d9c8 RS |
476 | /* -f flags. */ |
477 | ||
478 | /* Nonzero means `char' should be signed. */ | |
479 | ||
480 | int flag_signed_char; | |
481 | ||
482 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
483 | ||
484 | int flag_short_enums; | |
485 | ||
486 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
487 | be saved across function calls, if that produces overall better code. | |
488 | Optional now, so people can test it. */ | |
489 | ||
490 | #ifdef DEFAULT_CALLER_SAVES | |
491 | int flag_caller_saves = 1; | |
492 | #else | |
493 | int flag_caller_saves = 0; | |
494 | #endif | |
495 | ||
958ec8ca JW |
496 | /* Nonzero if structures and unions should be returned in memory. |
497 | ||
498 | This should only be defined if compatibility with another compiler or | |
499 | with an ABI is needed, because it results in slower code. */ | |
500 | ||
501 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
502 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
503 | #endif | |
504 | ||
4291d9c8 RS |
505 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
506 | ||
958ec8ca | 507 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
508 | |
509 | /* Nonzero for -fforce-mem: load memory value into a register | |
510 | before arithmetic on it. This makes better cse but slower compilation. */ | |
511 | ||
512 | int flag_force_mem = 0; | |
513 | ||
514 | /* Nonzero for -fforce-addr: load memory address into a register before | |
515 | reference to memory. This makes better cse but slower compilation. */ | |
516 | ||
517 | int flag_force_addr = 0; | |
518 | ||
519 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
520 | instead save them up to pop many calls' args with one insns. */ | |
521 | ||
6731a3e3 | 522 | int flag_defer_pop = 0; |
4291d9c8 RS |
523 | |
524 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
525 | in extended-precision registers. */ | |
526 | ||
527 | int flag_float_store = 0; | |
528 | ||
529 | /* Nonzero for -fcse-follow-jumps: | |
530 | have cse follow jumps to do a more extensive job. */ | |
531 | ||
532 | int flag_cse_follow_jumps; | |
533 | ||
8b3686ed RK |
534 | /* Nonzero for -fcse-skip-blocks: |
535 | have cse follow a branch around a block. */ | |
536 | int flag_cse_skip_blocks; | |
537 | ||
4291d9c8 RS |
538 | /* Nonzero for -fexpensive-optimizations: |
539 | perform miscellaneous relatively-expensive optimizations. */ | |
540 | int flag_expensive_optimizations; | |
541 | ||
542 | /* Nonzero for -fthread-jumps: | |
543 | have jump optimize output of loop. */ | |
544 | ||
545 | int flag_thread_jumps; | |
546 | ||
547 | /* Nonzero enables strength-reduction in loop.c. */ | |
548 | ||
549 | int flag_strength_reduce = 0; | |
550 | ||
551 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
552 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
553 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
554 | unrolled. */ | |
555 | ||
b17d5d7c | 556 | int flag_old_unroll_loops; |
4291d9c8 RS |
557 | |
558 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
559 | This is generally not a win. */ | |
560 | ||
b17d5d7c ZD |
561 | int flag_old_unroll_all_loops; |
562 | ||
563 | /* Enables unrolling of simple loops in loop-unroll.c. */ | |
564 | int flag_unroll_loops; | |
565 | ||
566 | /* Enables unrolling of all loops in loop-unroll.c. */ | |
4291d9c8 RS |
567 | int flag_unroll_all_loops; |
568 | ||
b17d5d7c ZD |
569 | /* Nonzero enables loop peeling. */ |
570 | int flag_peel_loops; | |
571 | ||
617b465c ZD |
572 | /* Nonzero enables loop unswitching. */ |
573 | int flag_unswitch_loops; | |
574 | ||
0dd0e980 JH |
575 | /* Nonzero enables prefetch optimizations for arrays in loops. */ |
576 | ||
577 | int flag_prefetch_loop_arrays; | |
578 | ||
e5eb27e5 | 579 | /* Nonzero forces all invariant computations in loops to be moved |
854a97f0 | 580 | outside the loop. */ |
e5eb27e5 JL |
581 | |
582 | int flag_move_all_movables = 0; | |
583 | ||
584 | /* Nonzero forces all general induction variables in loops to be | |
854a97f0 | 585 | strength reduced. */ |
e5eb27e5 JL |
586 | |
587 | int flag_reduce_all_givs = 0; | |
588 | ||
9ec36da5 JL |
589 | /* Nonzero to perform full register move optimization passes. This is the |
590 | default for -O2. */ | |
591 | ||
592 | int flag_regmove = 0; | |
593 | ||
4291d9c8 RS |
594 | /* Nonzero for -fwritable-strings: |
595 | store string constants in data segment and don't uniquize them. */ | |
596 | ||
597 | int flag_writable_strings = 0; | |
598 | ||
599 | /* Nonzero means don't put addresses of constant functions in registers. | |
600 | Used for compiling the Unix kernel, where strange substitutions are | |
601 | done on the assembly output. */ | |
602 | ||
603 | int flag_no_function_cse = 0; | |
604 | ||
605 | /* Nonzero for -fomit-frame-pointer: | |
606 | don't make a frame pointer in simple functions that don't require one. */ | |
607 | ||
608 | int flag_omit_frame_pointer = 0; | |
609 | ||
cf440348 JL |
610 | /* Nonzero means place each function into its own section on those platforms |
611 | which support arbitrary section names and unlimited numbers of sections. */ | |
612 | ||
613 | int flag_function_sections = 0; | |
614 | ||
fd868572 | 615 | /* ... and similar for data. */ |
854a97f0 | 616 | |
fd868572 CM |
617 | int flag_data_sections = 0; |
618 | ||
4291d9c8 RS |
619 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
620 | ||
621 | int flag_no_peephole = 0; | |
622 | ||
db8cb48e JH |
623 | /* Nonzero allows GCC to optimize sibling and tail recursive calls. */ |
624 | ||
625 | int flag_optimize_sibling_calls = 0; | |
626 | ||
41af162c | 627 | /* Nonzero means the front end generally wants `errno' maintained by math |
de6c5979 | 628 | operations, like built-in SQRT. */ |
41af162c CB |
629 | |
630 | int flag_errno_math = 1; | |
631 | ||
de6c5979 BL |
632 | /* Nonzero means that unsafe floating-point math optimizations are allowed |
633 | for the sake of speed. IEEE compliance is not guaranteed, and operations | |
634 | are allowed to assume that their arguments and results are "normal" | |
635 | (e.g., nonnegative for SQRT). */ | |
636 | ||
637 | int flag_unsafe_math_optimizations = 0; | |
638 | ||
2e8f2e8f TM |
639 | /* Nonzero means that no NaNs or +-Infs are expected. */ |
640 | ||
641 | int flag_finite_math_only = 0; | |
642 | ||
de6c5979 BL |
643 | /* Zero means that floating-point math operations cannot generate a |
644 | (user-visible) trap. This is the case, for example, in nonstop | |
52bfebf0 | 645 | IEEE 754 arithmetic. Trapping conditions include division by zero, |
26182e15 | 646 | overflow, underflow, invalid and inexact, but does not include |
52bfebf0 | 647 | operations on signaling NaNs (see below). */ |
de6c5979 BL |
648 | |
649 | int flag_trapping_math = 1; | |
650 | ||
52bfebf0 | 651 | /* Nonzero means disable transformations observable by signaling NaNs. |
b20b352b | 652 | This option implies that any operation on an IEEE signaling NaN can |
52bfebf0 RS |
653 | generate a (user-visible) trap. */ |
654 | ||
655 | int flag_signaling_nans = 0; | |
656 | ||
c64f913e CB |
657 | /* 0 means straightforward implementation of complex divide acceptable. |
658 | 1 means wide ranges of inputs must work for complex divide. | |
526aba28 | 659 | 2 means C99-like requirements for complex divide (not yet implemented). */ |
c64f913e CB |
660 | |
661 | int flag_complex_divide_method = 0; | |
662 | ||
4291d9c8 RS |
663 | /* Nonzero means just do syntax checking; don't output anything. */ |
664 | ||
665 | int flag_syntax_only = 0; | |
666 | ||
96327cdc JH |
667 | /* Nonzero means perform loop optimizer. */ |
668 | ||
de32c0cb | 669 | int flag_loop_optimize; |
96327cdc JH |
670 | |
671 | /* Nonzero means perform crossjumping. */ | |
672 | ||
de32c0cb | 673 | int flag_crossjumping; |
96327cdc | 674 | |
2c4b77f3 JH |
675 | /* Nonzero means perform if conversion. */ |
676 | ||
de32c0cb | 677 | int flag_if_conversion; |
2c4b77f3 JH |
678 | |
679 | /* Nonzero means perform if conversion after reload. */ | |
680 | ||
de32c0cb | 681 | int flag_if_conversion2; |
2c4b77f3 | 682 | |
b6d24183 JL |
683 | /* Nonzero means to use global dataflow analysis to eliminate |
684 | useless null pointer tests. */ | |
685 | ||
de32c0cb | 686 | int flag_delete_null_pointer_checks; |
b6d24183 | 687 | |
34ee7f82 RS |
688 | /* Nonzero means perform global CSE. */ |
689 | ||
690 | int flag_gcse = 0; | |
691 | ||
a13d4ebf AM |
692 | /* Nonzero means to do the enhanced load motion during gcse, which trys |
693 | to hoist loads by not killing them when a store to the same location | |
694 | is seen. */ | |
695 | ||
696 | int flag_gcse_lm = 1; | |
697 | ||
698 | /* Nonzero means to perform store motion after gcse, which will try to | |
699 | move stores closer to the exit block. Its not very effective without | |
700 | flag_gcse_lm. */ | |
701 | ||
702 | int flag_gcse_sm = 1; | |
703 | ||
fe3ad572 SC |
704 | /* Perform target register optimization before prologue / epilogue |
705 | threading. */ | |
706 | ||
707 | int flag_branch_target_load_optimize = 0; | |
708 | ||
709 | /* Perform target register optimization after prologue / epilogue | |
710 | threading and jump2. */ | |
711 | ||
712 | int flag_branch_target_load_optimize2 = 0; | |
713 | ||
4291d9c8 RS |
714 | /* Nonzero means to rerun cse after loop optimization. This increases |
715 | compilation time about 20% and picks up a few more common expressions. */ | |
716 | ||
de32c0cb | 717 | int flag_rerun_cse_after_loop; |
4291d9c8 | 718 | |
6d6d0fa0 JL |
719 | /* Nonzero means to run loop optimizations twice. */ |
720 | ||
64fde701 | 721 | int flag_rerun_loop_opt; |
6d6d0fa0 | 722 | |
4291d9c8 RS |
723 | /* Nonzero for -finline-functions: ok to inline functions that look like |
724 | good inline candidates. */ | |
725 | ||
726 | int flag_inline_functions; | |
727 | ||
728 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 729 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
730 | purposes. */ |
731 | ||
732 | int flag_keep_inline_functions; | |
733 | ||
fadb3bc9 | 734 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 | 735 | |
b0148884 | 736 | int flag_no_inline = 2; |
4291d9c8 | 737 | |
2cb921f4 AH |
738 | /* Nonzero means that we don't want inlining by virtue of -fno-inline, |
739 | not just because the tree inliner turned us off. */ | |
740 | ||
b0148884 | 741 | int flag_really_no_inline = 2; |
2cb921f4 | 742 | |
fbe912dd BK |
743 | /* Nonzero means that we should emit static const variables |
744 | regardless of whether or not optimization is turned on. */ | |
745 | ||
746 | int flag_keep_static_consts = 1; | |
747 | ||
4291d9c8 RS |
748 | /* Nonzero means we should be saving declaration info into a .X file. */ |
749 | ||
750 | int flag_gen_aux_info = 0; | |
751 | ||
f246a305 RS |
752 | /* Specified name of aux-info file. */ |
753 | ||
d185d268 | 754 | const char *aux_info_file_name; |
f246a305 | 755 | |
4291d9c8 RS |
756 | /* Nonzero means make the text shared if supported. */ |
757 | ||
758 | int flag_shared_data; | |
759 | ||
760 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
761 | ||
762 | int flag_delayed_branch; | |
763 | ||
764 | /* Nonzero if we are compiling pure (sharable) code. | |
3d78f2e9 RH |
765 | Value is 1 if we are doing "small" pic; value is 2 if we're doing |
766 | "large" pic. */ | |
4291d9c8 RS |
767 | |
768 | int flag_pic; | |
769 | ||
24a4dd31 JJ |
770 | /* Nonzero if we are compiling position independent code for executable. |
771 | The value is 1 if we are doing "small" pic; value is 2 if we're doing | |
772 | "large" pic. */ | |
773 | ||
774 | int flag_pie; | |
775 | ||
776 | /* Nonzero if we are compiling code for a shared library, zero for | |
777 | executable. */ | |
778 | ||
779 | int flag_shlib; | |
780 | ||
3d78f2e9 RH |
781 | /* Set to the default thread-local storage (tls) model to use. */ |
782 | ||
755ac5d4 | 783 | enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC; |
3d78f2e9 | 784 | |
3d195391 MS |
785 | /* Nonzero means generate extra code for exception handling and enable |
786 | exception handling. */ | |
787 | ||
b53beeb2 | 788 | int flag_exceptions; |
3d195391 | 789 | |
854a97f0 | 790 | /* Nonzero means generate frame unwind info table when supported. */ |
14a774a9 RK |
791 | |
792 | int flag_unwind_tables = 0; | |
793 | ||
f9da5064 KH |
794 | /* Nonzero means generate frame unwind info table exact at each insn |
795 | boundary. */ | |
b932f770 JH |
796 | |
797 | int flag_asynchronous_unwind_tables = 0; | |
798 | ||
2786cbad | 799 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 800 | by default. */ |
4291d9c8 RS |
801 | |
802 | int flag_no_common; | |
803 | ||
4291d9c8 RS |
804 | /* Nonzero means change certain warnings into errors. |
805 | Usually these are warnings about failure to conform to some standard. */ | |
806 | ||
807 | int flag_pedantic_errors = 0; | |
808 | ||
809 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
810 | local_alloc). | |
811 | flag_schedule_insns_after_reload means schedule insns after | |
812 | global_alloc. */ | |
813 | ||
814 | int flag_schedule_insns = 0; | |
815 | int flag_schedule_insns_after_reload = 0; | |
816 | ||
b9422b69 JH |
817 | /* When flag_schedule_insns_after_reload is set, use EBB scheduler. */ |
818 | int flag_sched2_use_superblocks = 0; | |
819 | ||
820 | /* When flag_schedule_insns_after_reload is set, construct traces and EBB | |
821 | scheduler. */ | |
822 | int flag_sched2_use_traces = 0; | |
823 | ||
8c660648 JL |
824 | /* The following flags have effect only for scheduling before register |
825 | allocation: | |
826 | ||
14b493d6 | 827 | flag_schedule_interblock means schedule insns across basic blocks. |
8c660648 JL |
828 | flag_schedule_speculative means allow speculative motion of non-load insns. |
829 | flag_schedule_speculative_load means allow speculative motion of some | |
830 | load insns. | |
831 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 832 | load insns. */ |
8c660648 JL |
833 | |
834 | int flag_schedule_interblock = 1; | |
835 | int flag_schedule_speculative = 1; | |
836 | int flag_schedule_speculative_load = 0; | |
837 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 | 838 | |
46d3a873 CC |
839 | int flag_single_precision_constant; |
840 | ||
5527bf14 | 841 | /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple |
854a97f0 | 842 | by a cheaper branch on a count register. */ |
5527bf14 | 843 | int flag_branch_on_count_reg = 1; |
8c660648 | 844 | |
4291d9c8 | 845 | /* -finhibit-size-directive inhibits output of .size for ELF. |
854a97f0 | 846 | This is used only for compiling crtstuff.c, |
4291d9c8 RS |
847 | and it may be extended to other effects |
848 | needed for crtstuff.c on other systems. */ | |
849 | int flag_inhibit_size_directive = 0; | |
850 | ||
9a631e8e RS |
851 | /* -fverbose-asm causes extra commentary information to be produced in |
852 | the generated assembly code (to make it more readable). This option | |
853 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 854 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 855 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
856 | to be omitted and is useful when comparing two assembler files. */ |
857 | ||
c85f7c16 | 858 | int flag_verbose_asm = 0; |
9a631e8e | 859 | |
3d5cdd42 DE |
860 | /* -dA causes debug commentary information to be produced in |
861 | the generated assembly code (to make it more readable). This option | |
862 | is generally only of use to those who actually need to read the | |
863 | generated assembly code (perhaps while debugging the compiler itself). | |
864 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
865 | to be a catchall for printing debug information in the assembler file. */ | |
866 | ||
867 | int flag_debug_asm = 0; | |
9a631e8e | 868 | |
c349e40b SC |
869 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
870 | ||
871 | int flag_dump_rtl_in_asm = 0; | |
872 | ||
4291d9c8 | 873 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
874 | (Or, more generally, a linker that handles initializations.) |
875 | -fno-gnu-linker says that collect2 will be used. */ | |
876 | #ifdef USE_COLLECT2 | |
877 | int flag_gnu_linker = 0; | |
878 | #else | |
4291d9c8 | 879 | int flag_gnu_linker = 1; |
d68c507d | 880 | #endif |
4291d9c8 | 881 | |
27b41650 KG |
882 | /* Nonzero means put zero initialized data in the bss section. */ |
883 | int flag_zero_initialized_in_bss = 1; | |
884 | ||
d9d4fb43 AS |
885 | /* Enable SSA. */ |
886 | int flag_ssa = 0; | |
887 | ||
0b47e4c1 JL |
888 | /* Enable ssa conditional constant propagation. */ |
889 | int flag_ssa_ccp = 0; | |
890 | ||
891 | /* Enable ssa aggressive dead code elimination. */ | |
62d285ff | 892 | int flag_ssa_dce = 0; |
b53978a3 | 893 | |
854a97f0 | 894 | /* Tag all structures with __attribute__(packed). */ |
566cdc73 MM |
895 | int flag_pack_struct = 0; |
896 | ||
bd83d0ac RK |
897 | /* Emit code to check for stack overflow; also may cause large objects |
898 | to be allocated dynamically. */ | |
899 | int flag_stack_check; | |
900 | ||
a157febd GK |
901 | /* When non-NULL, indicates that whenever space is allocated on the |
902 | stack, the resulting stack pointer must not pass this | |
903 | address---that is, for stacks that grow downward, the stack pointer | |
904 | must always be greater than or equal to this address; for stacks | |
905 | that grow upward, the stack pointer must be less than this address. | |
906 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
907 | the support provided depends on the backend. */ | |
908 | rtx stack_limit_rtx; | |
909 | ||
9ae8ffe7 JL |
910 | /* 0 if pointer arguments may alias each other. True in C. |
911 | 1 if pointer arguments may not alias each other but may alias | |
912 | global variables. | |
913 | 2 if pointer arguments may not alias each other and may not | |
914 | alias global variables. True in Fortran. | |
915 | This defaults to 0 for C. */ | |
916 | int flag_argument_noalias = 0; | |
917 | ||
41472af8 MM |
918 | /* Nonzero if we should do (language-dependent) alias analysis. |
919 | Typically, this analysis will assume that expressions of certain | |
920 | types do not alias expressions of certain other types. Only used | |
921 | if alias analysis (in general) is enabled. */ | |
922 | int flag_strict_aliasing = 0; | |
923 | ||
07417085 KR |
924 | /* Instrument functions with calls at entry and exit, for profiling. */ |
925 | int flag_instrument_function_entry_exit = 0; | |
926 | ||
be163a70 ZW |
927 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
928 | On SVR4 targets, it also controls whether or not to emit a | |
929 | string identifying the compiler. */ | |
930 | ||
931 | int flag_no_ident = 0; | |
b8468bc7 | 932 | |
854a97f0 | 933 | /* This will perform a peephole pass before sched2. */ |
ede7cd44 RH |
934 | int flag_peephole2 = 0; |
935 | ||
3ff51205 AH |
936 | /* This will try to guess branch probabilities. */ |
937 | int flag_guess_branch_prob = 0; | |
938 | ||
a8aa7975 | 939 | /* -fcheck-bounds causes gcc to generate array bounds checks. |
e03b7153 | 940 | For C, C++, ObjC: defaults to off. |
a8aa7975 | 941 | For Java: defaults to on. |
e03b7153 | 942 | For Fortran: defaults to off. */ |
a8aa7975 GM |
943 | int flag_bounds_check = 0; |
944 | ||
201556f0 JJ |
945 | /* This will attempt to merge constant section constants, if 1 only |
946 | string constants and constants from constant pool, if 2 also constant | |
947 | variables. */ | |
948 | int flag_merge_constants = 1; | |
949 | ||
673b5311 MM |
950 | /* If one, renumber instruction UIDs to reduce the number of |
951 | unused UIDs if there are a lot of instructions. If greater than | |
952 | one, unconditionally renumber instruction UIDs. */ | |
953 | int flag_renumber_insns = 1; | |
954 | ||
ed8d2920 MM |
955 | /* If nonzero, use the graph coloring register allocator. */ |
956 | int flag_new_regalloc = 0; | |
957 | ||
5c856b23 JH |
958 | /* Nonzero if we perform superblock formation. */ |
959 | ||
960 | int flag_tracer = 0; | |
961 | ||
e72fcfe8 JH |
962 | /* Nonzero if we perform whole unit at a time compilation. */ |
963 | ||
964 | int flag_unit_at_a_time = 0; | |
965 | ||
854a97f0 KH |
966 | /* Values of the -falign-* flags: how much to align labels in code. |
967 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
968 | For each variable, there is an _log variant which is the power |
969 | of two not less than the variable, for .align output. */ | |
970 | ||
971 | int align_loops; | |
972 | int align_loops_log; | |
2cca7283 | 973 | int align_loops_max_skip; |
efa3896a GK |
974 | int align_jumps; |
975 | int align_jumps_log; | |
2cca7283 | 976 | int align_jumps_max_skip; |
efa3896a GK |
977 | int align_labels; |
978 | int align_labels_log; | |
2cca7283 | 979 | int align_labels_max_skip; |
efa3896a GK |
980 | int align_functions; |
981 | int align_functions_log; | |
982 | ||
f963b5d9 RS |
983 | /* Like align_functions_log above, but used by front-ends to force the |
984 | minimum function alignment. Zero means no alignment is forced. */ | |
985 | int force_align_functions_log; | |
986 | ||
b8468bc7 | 987 | /* Table of supported debugging formats. */ |
8b60264b | 988 | static const struct |
b8468bc7 | 989 | { |
8b60264b | 990 | const char *const arg; |
b8468bc7 NC |
991 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
992 | constant expression, we use NO_DEBUG in its place. */ | |
8b60264b KG |
993 | const enum debug_info_type debug_type; |
994 | const int use_extensions_p; | |
995 | const char *const description; | |
b8468bc7 NC |
996 | } *da, |
997 | debug_args[] = | |
998 | { | |
39dd8003 | 999 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
a6371940 ZW |
1000 | N_("Generate debugging info in default format") }, |
1001 | { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") }, | |
b8468bc7 | 1002 | #ifdef DBX_DEBUGGING_INFO |
a6371940 ZW |
1003 | { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") }, |
1004 | { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") }, | |
b8468bc7 NC |
1005 | #endif |
1006 | #ifdef DWARF_DEBUGGING_INFO | |
a6371940 | 1007 | { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") }, |
39dd8003 | 1008 | { "dwarf+", DWARF_DEBUG, 1, |
a6371940 | 1009 | N_("Generate extended DWARF-1 format debug info") }, |
b8468bc7 NC |
1010 | #endif |
1011 | #ifdef DWARF2_DEBUGGING_INFO | |
a6371940 | 1012 | { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") }, |
b8468bc7 NC |
1013 | #endif |
1014 | #ifdef XCOFF_DEBUGGING_INFO | |
a6371940 ZW |
1015 | { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") }, |
1016 | { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") }, | |
b8468bc7 NC |
1017 | #endif |
1018 | #ifdef SDB_DEBUGGING_INFO | |
a6371940 | 1019 | { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") }, |
1682dbb1 DR |
1020 | #endif |
1021 | #ifdef VMS_DEBUGGING_INFO | |
1022 | { "vms", VMS_DEBUG, 0, N_("Generate VMS format debug info") }, | |
b8468bc7 | 1023 | #endif |
c84e2712 | 1024 | { 0, 0, 0, 0 } |
b8468bc7 NC |
1025 | }; |
1026 | ||
1027 | typedef struct | |
1028 | { | |
c083a819 KG |
1029 | const char *const string; |
1030 | int *const variable; | |
1031 | const int on_value; | |
b8468bc7 NC |
1032 | } |
1033 | lang_independent_options; | |
1034 | ||
4fa26a60 | 1035 | /* Nonzero if signed arithmetic overflow should trap. */ |
91ce572a CC |
1036 | int flag_trapv = 0; |
1037 | ||
4fa26a60 RS |
1038 | /* Nonzero if signed arithmetic overflow should wrap around. */ |
1039 | int flag_wrapv = 0; | |
1040 | ||
19283265 RH |
1041 | /* Add or remove a leading underscore from user symbols. */ |
1042 | int flag_leading_underscore = -1; | |
1043 | ||
1044 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 1045 | const char *user_label_prefix; |
19283265 | 1046 | |
c6d9a88c MM |
1047 | static const param_info lang_independent_params[] = { |
1048 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \ | |
1c4c47db | 1049 | { OPTION, DEFAULT, HELP }, |
c6d9a88c MM |
1050 | #include "params.def" |
1051 | #undef DEFPARAM | |
1c4c47db | 1052 | { NULL, 0, NULL } |
c6d9a88c MM |
1053 | }; |
1054 | ||
4291d9c8 RS |
1055 | /* Table of language-independent -f options. |
1056 | STRING is the option name. VARIABLE is the address of the variable. | |
1057 | ON_VALUE is the value to store in VARIABLE | |
1058 | if `-fSTRING' is seen as an option. | |
1059 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
1060 | ||
c083a819 | 1061 | static const lang_independent_options f_options[] = |
4291d9c8 | 1062 | { |
f3fdaec4 NB |
1063 | {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1 }, |
1064 | {"eliminate-unused-debug-symbols", &flag_debug_only_used_symbols, 1 }, | |
1065 | {"eliminate-unused-debug-types", &flag_eliminate_unused_debug_types, 1 }, | |
1066 | {"float-store", &flag_float_store, 1 }, | |
1067 | {"defer-pop", &flag_defer_pop, 1 }, | |
1068 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1 }, | |
1069 | {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1 }, | |
1070 | {"tracer", &flag_tracer, 1 }, | |
1071 | {"unit-at-a-time", &flag_unit_at_a_time, 1 }, | |
1072 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1 }, | |
1073 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1 }, | |
1074 | {"expensive-optimizations", &flag_expensive_optimizations, 1 }, | |
1075 | {"thread-jumps", &flag_thread_jumps, 1 }, | |
1076 | {"strength-reduce", &flag_strength_reduce, 1 }, | |
1077 | {"unroll-loops", &flag_unroll_loops, 1 }, | |
1078 | {"unroll-all-loops", &flag_unroll_all_loops, 1 }, | |
1079 | {"old-unroll-loops", &flag_old_unroll_loops, 1 }, | |
1080 | {"old-unroll-all-loops", &flag_old_unroll_all_loops, 1 }, | |
1081 | {"peel-loops", &flag_peel_loops, 1 }, | |
1082 | {"unswitch-loops", &flag_unswitch_loops, 1 }, | |
1083 | {"prefetch-loop-arrays", &flag_prefetch_loop_arrays, 1 }, | |
1084 | {"move-all-movables", &flag_move_all_movables, 1 }, | |
1085 | {"reduce-all-givs", &flag_reduce_all_givs, 1 }, | |
1086 | {"writable-strings", &flag_writable_strings, 1 }, | |
1087 | {"peephole", &flag_no_peephole, 0 }, | |
1088 | {"force-mem", &flag_force_mem, 1 }, | |
1089 | {"force-addr", &flag_force_addr, 1 }, | |
1090 | {"function-cse", &flag_no_function_cse, 0 }, | |
1091 | {"inline-functions", &flag_inline_functions, 1 }, | |
1092 | {"keep-inline-functions", &flag_keep_inline_functions, 1 }, | |
1093 | {"inline", &flag_no_inline, 0 }, | |
1094 | {"keep-static-consts", &flag_keep_static_consts, 1 }, | |
1095 | {"syntax-only", &flag_syntax_only, 1 }, | |
1096 | {"shared-data", &flag_shared_data, 1 }, | |
1097 | {"caller-saves", &flag_caller_saves, 1 }, | |
1098 | {"pcc-struct-return", &flag_pcc_struct_return, 1 }, | |
1099 | {"reg-struct-return", &flag_pcc_struct_return, 0 }, | |
1100 | {"delayed-branch", &flag_delayed_branch, 1 }, | |
1101 | {"gcse", &flag_gcse, 1 }, | |
1102 | {"gcse-lm", &flag_gcse_lm, 1 }, | |
1103 | {"gcse-sm", &flag_gcse_sm, 1 }, | |
1104 | {"branch-target-load-optimize", &flag_branch_target_load_optimize, 1 }, | |
1105 | {"branch-target-load-optimize2", &flag_branch_target_load_optimize2, 1 }, | |
1106 | {"loop-optimize", &flag_loop_optimize, 1 }, | |
1107 | {"crossjumping", &flag_crossjumping, 1 }, | |
1108 | {"if-conversion", &flag_if_conversion, 1 }, | |
1109 | {"if-conversion2", &flag_if_conversion2, 1 }, | |
1110 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1 }, | |
1111 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1 }, | |
1112 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1 }, | |
1113 | {"schedule-insns", &flag_schedule_insns, 1 }, | |
1114 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1 }, | |
1115 | {"sched-interblock",&flag_schedule_interblock, 1 }, | |
1116 | {"sched-spec",&flag_schedule_speculative, 1 }, | |
1117 | {"sched-spec-load",&flag_schedule_speculative_load, 1 }, | |
1118 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1 }, | |
1119 | {"sched2-use-superblocks", &flag_sched2_use_superblocks, 1 }, | |
1120 | {"sched2-use-traces", &flag_sched2_use_traces, 1 }, | |
1121 | {"branch-count-reg",&flag_branch_on_count_reg, 1 }, | |
1122 | {"pic", &flag_pic, 1 }, | |
1123 | {"PIC", &flag_pic, 2 }, | |
1124 | {"pie", &flag_pie, 1 }, | |
1125 | {"PIE", &flag_pie, 2 }, | |
1126 | {"exceptions", &flag_exceptions, 1 }, | |
1127 | {"unwind-tables", &flag_unwind_tables, 1 }, | |
1128 | {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1 }, | |
1129 | {"non-call-exceptions", &flag_non_call_exceptions, 1 }, | |
1130 | {"profile-arcs", &profile_arc_flag, 1 }, | |
1131 | {"test-coverage", &flag_test_coverage, 1 }, | |
1132 | {"branch-probabilities", &flag_branch_probabilities, 1 }, | |
1133 | {"profile", &profile_flag, 1 }, | |
1134 | {"reorder-blocks", &flag_reorder_blocks, 1 }, | |
1135 | {"reorder-functions", &flag_reorder_functions, 1 }, | |
1136 | {"rename-registers", &flag_rename_registers, 1 }, | |
1137 | {"cprop-registers", &flag_cprop_registers, 1 }, | |
1138 | {"common", &flag_no_common, 0 }, | |
1139 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1 }, | |
1140 | {"function-sections", &flag_function_sections, 1 }, | |
1141 | {"data-sections", &flag_data_sections, 1 }, | |
1142 | {"verbose-asm", &flag_verbose_asm, 1 }, | |
1143 | {"gnu-linker", &flag_gnu_linker, 1 }, | |
1144 | {"regmove", &flag_regmove, 1 }, | |
1145 | {"optimize-register-move", &flag_regmove, 1 }, | |
1146 | {"pack-struct", &flag_pack_struct, 1 }, | |
1147 | {"stack-check", &flag_stack_check, 1 }, | |
1148 | {"argument-alias", &flag_argument_noalias, 0 }, | |
1149 | {"argument-noalias", &flag_argument_noalias, 1 }, | |
1150 | {"argument-noalias-global", &flag_argument_noalias, 2 }, | |
1151 | {"strict-aliasing", &flag_strict_aliasing, 1 }, | |
1152 | {"align-loops", &align_loops, 0 }, | |
1153 | {"align-jumps", &align_jumps, 0 }, | |
1154 | {"align-labels", &align_labels, 0 }, | |
1155 | {"align-functions", &align_functions, 0 }, | |
1156 | {"merge-constants", &flag_merge_constants, 1 }, | |
1157 | {"merge-all-constants", &flag_merge_constants, 2 }, | |
1158 | {"dump-unnumbered", &flag_dump_unnumbered, 1 }, | |
1159 | {"instrument-functions", &flag_instrument_function_entry_exit, 1 }, | |
1160 | {"zero-initialized-in-bss", &flag_zero_initialized_in_bss, 1 }, | |
1161 | {"ssa", &flag_ssa, 1 }, | |
1162 | {"ssa-ccp", &flag_ssa_ccp, 1 }, | |
1163 | {"ssa-dce", &flag_ssa_dce, 1 }, | |
1164 | {"leading-underscore", &flag_leading_underscore, 1 }, | |
1165 | {"ident", &flag_no_ident, 0 }, | |
1166 | { "peephole2", &flag_peephole2, 1 }, | |
1167 | {"finite-math-only", &flag_finite_math_only, 1 }, | |
1168 | { "guess-branch-probability", &flag_guess_branch_prob, 1 }, | |
1169 | {"math-errno", &flag_errno_math, 1 }, | |
1170 | {"trapping-math", &flag_trapping_math, 1 }, | |
1171 | {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1 }, | |
1172 | {"signaling-nans", &flag_signaling_nans, 1 }, | |
1173 | {"bounds-check", &flag_bounds_check, 1 }, | |
1174 | {"single-precision-constant", &flag_single_precision_constant, 1 }, | |
1175 | {"time-report", &time_report, 1 }, | |
1176 | {"mem-report", &mem_report, 1 }, | |
1177 | { "trapv", &flag_trapv, 1 }, | |
1178 | { "wrapv", &flag_wrapv, 1 }, | |
1179 | { "new-ra", &flag_new_regalloc, 1 } | |
4291d9c8 | 1180 | }; |
b99933c7 | 1181 | |
b8468bc7 NC |
1182 | /* Here is a table, controlled by the tm.h file, listing each -m switch |
1183 | and which bits in `target_switches' it should set or clear. | |
1184 | If VALUE is positive, it is bits to set. | |
1185 | If VALUE is negative, -VALUE is bits to clear. | |
1186 | (The sign bit is not used so there is no confusion.) */ | |
1187 | ||
8b60264b | 1188 | static const struct |
b8468bc7 | 1189 | { |
8b60264b KG |
1190 | const char *const name; |
1191 | const int value; | |
1192 | const char *const description; | |
b8468bc7 | 1193 | } |
9cabb1d8 | 1194 | target_switches[] = TARGET_SWITCHES; |
b8468bc7 NC |
1195 | |
1196 | /* This table is similar, but allows the switch to have a value. */ | |
1197 | ||
1198 | #ifdef TARGET_OPTIONS | |
8b60264b | 1199 | static const struct |
b8468bc7 | 1200 | { |
8b60264b KG |
1201 | const char *const prefix; |
1202 | const char **const variable; | |
1203 | const char *const description; | |
c409ea0d | 1204 | const char *const value; |
b8468bc7 | 1205 | } |
9cabb1d8 | 1206 | target_options[] = TARGET_OPTIONS; |
b8468bc7 | 1207 | #endif |
ddc9542b | 1208 | |
4291d9c8 RS |
1209 | /* Nonzero means warn about function definitions that default the return type |
1210 | or that use a null return and have a return-type other than void. */ | |
1211 | ||
1212 | int warn_return_type; | |
1213 | ||
4291d9c8 RS |
1214 | /* Output files for assembler code (real compiler output) |
1215 | and debugging dumps. */ | |
1216 | ||
1217 | FILE *asm_out_file; | |
1218 | FILE *aux_info_file; | |
032713aa | 1219 | FILE *rtl_dump_file = NULL; |
a194aa56 | 1220 | FILE *cgraph_dump_file = NULL; |
4291d9c8 | 1221 | |
c07e5477 NS |
1222 | /* Set up a default flag_random_seed and local_tick, unless the user |
1223 | already specified one. */ | |
1224 | ||
1225 | static void | |
1226 | randomize (void) | |
1227 | { | |
1228 | if (!flag_random_seed) | |
1229 | { | |
1230 | unsigned HOST_WIDE_INT value; | |
1231 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; | |
1232 | ||
1233 | /* Get some more or less random data. */ | |
1234 | #ifdef HAVE_GETTIMEOFDAY | |
1235 | { | |
1236 | struct timeval tv; | |
1237 | ||
1238 | gettimeofday (&tv, NULL); | |
1239 | local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
1240 | } | |
1241 | #else | |
1242 | { | |
c163ddca | 1243 | time_t now = time (NULL); |
c07e5477 NS |
1244 | |
1245 | if (now != (time_t)-1) | |
1246 | local_tick = (unsigned) now; | |
1247 | } | |
1248 | #endif | |
1249 | value = local_tick ^ getpid (); | |
1250 | ||
1251 | sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); | |
1252 | flag_random_seed = random_seed; | |
1253 | } | |
e61a2eb7 | 1254 | else if (!local_tick) |
c07e5477 NS |
1255 | local_tick = -1; |
1256 | } | |
1257 | ||
1258 | ||
132e01b1 TP |
1259 | /* Decode the string P as an integral parameter. |
1260 | If the string is indeed an integer return its numeric value else | |
192babfd | 1261 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
1262 | If PNAME is zero just return DEFVAL, do not call error. */ |
1263 | ||
132e01b1 | 1264 | int |
e25a75e6 | 1265 | read_integral_parameter (const char *p, const char *pname, const int defval) |
132e01b1 | 1266 | { |
192babfd | 1267 | const char *endp = p; |
132e01b1 TP |
1268 | |
1269 | while (*endp) | |
1270 | { | |
0df6c2c7 | 1271 | if (ISDIGIT (*endp)) |
132e01b1 TP |
1272 | endp++; |
1273 | else | |
192babfd TP |
1274 | break; |
1275 | } | |
1276 | ||
1277 | if (*endp != 0) | |
1278 | { | |
1279 | if (pname != 0) | |
09e4ab56 | 1280 | error ("invalid option argument `%s'", pname); |
192babfd | 1281 | return defval; |
132e01b1 TP |
1282 | } |
1283 | ||
1284 | return atoi (p); | |
1285 | } | |
4291d9c8 | 1286 | |
4291d9c8 | 1287 | /* Return the logarithm of X, base 2, considering X unsigned, |
37366632 RK |
1288 | if X is a power of 2. Otherwise, returns -1. |
1289 | ||
1290 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1291 | |
1292 | int | |
e25a75e6 | 1293 | exact_log2_wide (unsigned HOST_WIDE_INT x) |
4291d9c8 | 1294 | { |
b3694847 | 1295 | int log = 0; |
4291d9c8 RS |
1296 | /* Test for 0 or a power of 2. */ |
1297 | if (x == 0 || x != (x & -x)) | |
1298 | return -1; | |
1299 | while ((x >>= 1) != 0) | |
1300 | log++; | |
1301 | return log; | |
1302 | } | |
1303 | ||
1304 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1305 | If X is 0, return -1. |
1306 | ||
1307 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1308 | |
1309 | int | |
e25a75e6 | 1310 | floor_log2_wide (unsigned HOST_WIDE_INT x) |
4291d9c8 | 1311 | { |
b3694847 | 1312 | int log = -1; |
4291d9c8 RS |
1313 | while (x != 0) |
1314 | log++, | |
1315 | x >>= 1; | |
1316 | return log; | |
1317 | } | |
1318 | ||
a7023245 | 1319 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
c770ac2b ZW |
1320 | into ICE messages, which is much more user friendly. In case the |
1321 | error printer crashes, reset the signal to prevent infinite recursion. */ | |
4291d9c8 RS |
1322 | |
1323 | static void | |
e25a75e6 | 1324 | crash_signal (int signo) |
4291d9c8 | 1325 | { |
c770ac2b | 1326 | signal (signo, SIG_DFL); |
9d533cb5 | 1327 | internal_error ("%s", strsignal (signo)); |
4291d9c8 RS |
1328 | } |
1329 | ||
886e0865 GK |
1330 | /* Arrange to dump core on error. (The regular error message is still |
1331 | printed first, except in the case of abort().) */ | |
1332 | ||
1333 | static void | |
e25a75e6 | 1334 | setup_core_dumping (void) |
886e0865 GK |
1335 | { |
1336 | #ifdef SIGABRT | |
1337 | signal (SIGABRT, SIG_DFL); | |
1338 | #endif | |
1339 | #if defined(HAVE_SETRLIMIT) | |
1340 | { | |
1341 | struct rlimit rlim; | |
1342 | if (getrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 1343 | fatal_error ("getting core file size maximum limit: %m"); |
886e0865 GK |
1344 | rlim.rlim_cur = rlim.rlim_max; |
1345 | if (setrlimit (RLIMIT_CORE, &rlim) != 0) | |
fa6ef813 | 1346 | fatal_error ("setting core file size limit to maximum: %m"); |
886e0865 GK |
1347 | } |
1348 | #endif | |
1349 | diagnostic_abort_on_error (global_dc); | |
1350 | } | |
1351 | ||
1352 | ||
4291d9c8 | 1353 | /* Strip off a legitimate source ending from the input string NAME of |
c62bdc79 | 1354 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 1355 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 1356 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
1357 | |
1358 | void | |
e25a75e6 | 1359 | strip_off_ending (char *name, int len) |
4291d9c8 | 1360 | { |
2290e0ec | 1361 | int i; |
41077ce4 | 1362 | for (i = 2; i < 6 && len > i; i++) |
2290e0ec PB |
1363 | { |
1364 | if (name[len - i] == '.') | |
1365 | { | |
1366 | name[len - i] = '\0'; | |
1367 | break; | |
1368 | } | |
1369 | } | |
4291d9c8 RS |
1370 | } |
1371 | ||
7dce5088 | 1372 | /* Output a quoted string. */ |
0f41302f | 1373 | |
7dce5088 | 1374 | void |
e25a75e6 | 1375 | output_quoted_string (FILE *asm_file, const char *string) |
7dce5088 | 1376 | { |
e9a25f70 JL |
1377 | #ifdef OUTPUT_QUOTED_STRING |
1378 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1379 | #else | |
7dce5088 PE |
1380 | char c; |
1381 | ||
1382 | putc ('\"', asm_file); | |
1383 | while ((c = *string++) != 0) | |
1384 | { | |
042cdf71 ZW |
1385 | if (ISPRINT (c)) |
1386 | { | |
1387 | if (c == '\"' || c == '\\') | |
1388 | putc ('\\', asm_file); | |
1389 | putc (c, asm_file); | |
1390 | } | |
1391 | else | |
211a0cbe | 1392 | fprintf (asm_file, "\\%03o", (unsigned char) c); |
7dce5088 PE |
1393 | } |
1394 | putc ('\"', asm_file); | |
e9a25f70 | 1395 | #endif |
7dce5088 PE |
1396 | } |
1397 | ||
4291d9c8 RS |
1398 | /* Output a file name in the form wanted by System V. */ |
1399 | ||
1400 | void | |
e25a75e6 | 1401 | output_file_directive (FILE *asm_file, const char *input_name) |
4291d9c8 RS |
1402 | { |
1403 | int len = strlen (input_name); | |
87e11268 | 1404 | const char *na = input_name + len; |
4291d9c8 RS |
1405 | |
1406 | /* NA gets INPUT_NAME sans directory names. */ | |
1407 | while (na > input_name) | |
1408 | { | |
1a8bb3dd | 1409 | if (IS_DIR_SEPARATOR (na[-1])) |
9cabb1d8 | 1410 | break; |
4291d9c8 RS |
1411 | na--; |
1412 | } | |
1413 | ||
1414 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1415 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1416 | #else | |
1417 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1418 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1419 | #else | |
7dce5088 PE |
1420 | fprintf (asm_file, "\t.file\t"); |
1421 | output_quoted_string (asm_file, na); | |
1422 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1423 | #endif |
1424 | #endif | |
1425 | } | |
ddc9542b | 1426 | |
61098249 RH |
1427 | /* Routine to open a dump file. Return true if the dump file is enabled. */ |
1428 | ||
1429 | static int | |
e25a75e6 | 1430 | open_dump_file (enum dump_file_index index, tree decl) |
032713aa | 1431 | { |
61098249 RH |
1432 | char *dump_name; |
1433 | const char *open_arg; | |
1434 | char seq[16]; | |
1435 | ||
1436 | if (! dump_file[index].enabled) | |
1437 | return 0; | |
0f41302f | 1438 | |
2a9a326b AS |
1439 | timevar_push (TV_DUMP); |
1440 | if (rtl_dump_file != NULL) | |
1441 | fclose (rtl_dump_file); | |
854a97f0 | 1442 | |
6baf9874 | 1443 | sprintf (seq, DUMPFILE_FORMAT, index); |
61098249 | 1444 | |
2a9a326b AS |
1445 | if (! dump_file[index].initialized) |
1446 | { | |
1447 | /* If we've not initialized the files, do so now. */ | |
1448 | if (graph_dump_format != no_graph | |
1449 | && dump_file[index].graph_dump_p) | |
1450 | { | |
1451 | dump_name = concat (seq, dump_file[index].extension, NULL); | |
1452 | clean_graph_dump_file (dump_base_name, dump_name); | |
1453 | free (dump_name); | |
1454 | } | |
1455 | dump_file[index].initialized = 1; | |
1456 | open_arg = "w"; | |
1457 | } | |
1458 | else | |
1459 | open_arg = "a"; | |
61098249 | 1460 | |
2a9a326b AS |
1461 | dump_name = concat (dump_base_name, seq, |
1462 | dump_file[index].extension, NULL); | |
61098249 | 1463 | |
2a9a326b AS |
1464 | rtl_dump_file = fopen (dump_name, open_arg); |
1465 | if (rtl_dump_file == NULL) | |
fa6ef813 | 1466 | fatal_error ("can't open %s: %m", dump_name); |
854a97f0 | 1467 | |
2a9a326b | 1468 | free (dump_name); |
032713aa | 1469 | |
2a9a326b | 1470 | if (decl) |
0f72964f JH |
1471 | fprintf (rtl_dump_file, "\n;; Function %s%s\n\n", |
1472 | (*lang_hooks.decl_printable_name) (decl, 2), | |
1473 | cfun->function_frequency == FUNCTION_FREQUENCY_HOT | |
1474 | ? " (hot)" | |
1475 | : cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED | |
1476 | ? " (unlikely executed)" | |
1477 | : ""); | |
2a9a326b AS |
1478 | |
1479 | timevar_pop (TV_DUMP); | |
61098249 | 1480 | return 1; |
032713aa NC |
1481 | } |
1482 | ||
1483 | /* Routine to close a dump file. */ | |
61098249 | 1484 | |
032713aa | 1485 | static void |
e25a75e6 AJ |
1486 | close_dump_file (enum dump_file_index index, |
1487 | void (*func) (FILE *, rtx), | |
1488 | rtx insns) | |
032713aa | 1489 | { |
61098249 RH |
1490 | if (! rtl_dump_file) |
1491 | return; | |
1492 | ||
2a9a326b AS |
1493 | timevar_push (TV_DUMP); |
1494 | if (insns | |
1495 | && graph_dump_format != no_graph | |
1496 | && dump_file[index].graph_dump_p) | |
1497 | { | |
1498 | char seq[16]; | |
1499 | char *suffix; | |
61098249 | 1500 | |
6baf9874 | 1501 | sprintf (seq, DUMPFILE_FORMAT, index); |
2a9a326b AS |
1502 | suffix = concat (seq, dump_file[index].extension, NULL); |
1503 | print_rtl_graph_with_bb (dump_base_name, suffix, insns); | |
1504 | free (suffix); | |
1505 | } | |
61098249 | 1506 | |
2a9a326b AS |
1507 | if (func && insns) |
1508 | func (rtl_dump_file, insns); | |
854a97f0 | 1509 | |
2a9a326b AS |
1510 | fflush (rtl_dump_file); |
1511 | fclose (rtl_dump_file); | |
854a97f0 | 1512 | |
2a9a326b AS |
1513 | rtl_dump_file = NULL; |
1514 | timevar_pop (TV_DUMP); | |
dfe1a916 DE |
1515 | } |
1516 | ||
32291f94 MM |
1517 | /* Do any final processing required for the declarations in VEC, of |
1518 | which there are LEN. We write out inline functions and variables | |
1519 | that have been deferred until this point, but which are required. | |
0e9e1e0a | 1520 | Returns nonzero if anything was put out. */ |
854a97f0 | 1521 | |
32291f94 | 1522 | int |
e25a75e6 | 1523 | wrapup_global_declarations (tree *vec, int len) |
32291f94 MM |
1524 | { |
1525 | tree decl; | |
1526 | int i; | |
1527 | int reconsider; | |
1528 | int output_something = 0; | |
1529 | ||
1530 | for (i = 0; i < len; i++) | |
1531 | { | |
1532 | decl = vec[i]; | |
854a97f0 | 1533 | |
2b59501b | 1534 | /* We're not deferring this any longer. Assignment is |
3dc575ff | 1535 | conditional to avoid needlessly dirtying PCH pages. */ |
2b59501b MA |
1536 | if (DECL_DEFER_OUTPUT (decl) != 0) |
1537 | DECL_DEFER_OUTPUT (decl) = 0; | |
854a97f0 | 1538 | |
48a7a235 NB |
1539 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0) |
1540 | (*lang_hooks.finish_incomplete_decl) (decl); | |
32291f94 MM |
1541 | } |
1542 | ||
1543 | /* Now emit any global variables or functions that we have been | |
1544 | putting off. We need to loop in case one of the things emitted | |
1545 | here references another one which comes earlier in the list. */ | |
1546 | do | |
1547 | { | |
1548 | reconsider = 0; | |
1549 | for (i = 0; i < len; i++) | |
1550 | { | |
1551 | decl = vec[i]; | |
1552 | ||
1553 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1554 | continue; | |
1555 | ||
1556 | /* Don't write out static consts, unless we still need them. | |
1557 | ||
1558 | We also keep static consts if not optimizing (for debugging), | |
1559 | unless the user specified -fno-keep-static-consts. | |
1560 | ??? They might be better written into the debug information. | |
1561 | This is possible when using DWARF. | |
1562 | ||
1563 | A language processor that wants static constants to be always | |
1564 | written out (even if it is not used) is responsible for | |
1565 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
1566 | calls rest_of_decl_compilation from finish_decl. | |
1567 | One motivation for this is that is conventional in some | |
1568 | environments to write things like: | |
1569 | static const char rcsid[] = "... version string ..."; | |
1570 | intending to force the string to be in the executable. | |
1571 | ||
1572 | A language processor that would prefer to have unneeded | |
1573 | static constants "optimized away" would just defer writing | |
1574 | them out until here. E.g. C++ does this, because static | |
1575 | constants are often defined in header files. | |
1576 | ||
1577 | ??? A tempting alternative (for both C and C++) would be | |
1578 | to force a constant to be written if and only if it is | |
1579 | defined in a main file, as opposed to an include file. */ | |
1580 | ||
5cc90635 | 1581 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)) |
32291f94 | 1582 | { |
5cc90635 JM |
1583 | bool needed = 1; |
1584 | ||
e69529cd JH |
1585 | if (flag_unit_at_a_time |
1586 | && cgraph_varpool_node (decl)->finalized) | |
1587 | needed = 0; | |
1588 | else if (flag_unit_at_a_time | |
1589 | && (TREE_USED (decl) | |
1590 | || TREE_USED (DECL_ASSEMBLER_NAME (decl)))) | |
1591 | /* needed */; | |
1592 | else if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
5cc90635 JM |
1593 | /* needed */; |
1594 | else if (DECL_COMDAT (decl)) | |
1595 | needed = 0; | |
1596 | else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl) | |
1597 | && (optimize || !flag_keep_static_consts | |
1598 | || DECL_ARTIFICIAL (decl))) | |
1599 | needed = 0; | |
1600 | ||
1601 | if (needed) | |
1602 | { | |
1603 | reconsider = 1; | |
1604 | rest_of_decl_compilation (decl, NULL, 1, 1); | |
1605 | } | |
32291f94 MM |
1606 | } |
1607 | ||
1608 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1609 | && DECL_INITIAL (decl) != 0 | |
1610 | && DECL_SAVED_INSNS (decl) != 0 | |
1611 | && (flag_keep_inline_functions | |
59182242 | 1612 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
1613 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
1614 | { | |
1615 | reconsider = 1; | |
32291f94 | 1616 | output_inline_function (decl); |
32291f94 MM |
1617 | } |
1618 | } | |
1619 | ||
1620 | if (reconsider) | |
1621 | output_something = 1; | |
1622 | } | |
1623 | while (reconsider); | |
1624 | ||
1625 | return output_something; | |
1626 | } | |
1627 | ||
1628 | /* Issue appropriate warnings for the global declarations in VEC (of | |
1629 | which there are LEN). Output debugging information for them. */ | |
854a97f0 | 1630 | |
32291f94 | 1631 | void |
e25a75e6 | 1632 | check_global_declarations (tree *vec, int len) |
32291f94 MM |
1633 | { |
1634 | tree decl; | |
1635 | int i; | |
1636 | ||
1637 | for (i = 0; i < len; i++) | |
1638 | { | |
1639 | decl = vec[i]; | |
1640 | ||
1641 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
1642 | && ! TREE_ASM_WRITTEN (decl)) | |
1643 | /* Cancel the RTL for this decl so that, if debugging info | |
1644 | output for global variables is still to come, | |
1645 | this one will be omitted. */ | |
19e7881c | 1646 | SET_DECL_RTL (decl, NULL_RTX); |
32291f94 MM |
1647 | |
1648 | /* Warn about any function | |
1649 | declared static but not defined. | |
1650 | We don't warn about variables, | |
1651 | because many programs have static variables | |
1652 | that exist only to get some text into the object file. */ | |
1653 | if (TREE_CODE (decl) == FUNCTION_DECL | |
078721e1 | 1654 | && (warn_unused_function |
32291f94 MM |
1655 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
1656 | && DECL_INITIAL (decl) == 0 | |
1657 | && DECL_EXTERNAL (decl) | |
1658 | && ! DECL_ARTIFICIAL (decl) | |
1659 | && ! TREE_PUBLIC (decl)) | |
1660 | { | |
1661 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
1662 | pedwarn_with_decl (decl, | |
1663 | "`%s' used but never defined"); | |
1664 | else | |
1665 | warning_with_decl (decl, | |
1666 | "`%s' declared `static' but never defined"); | |
1667 | /* This symbol is effectively an "extern" declaration now. */ | |
1668 | TREE_PUBLIC (decl) = 1; | |
1669 | assemble_external (decl); | |
1670 | } | |
1671 | ||
ef4f94ac RH |
1672 | /* Warn about static fns or vars defined but not used. */ |
1673 | if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) | |
1674 | || (warn_unused_variable && TREE_CODE (decl) == VAR_DECL)) | |
1675 | && ! TREE_USED (decl) | |
1676 | /* The TREE_USED bit for file-scope decls is kept in the identifier, | |
1677 | to handle multiple external decls in different scopes. */ | |
1678 | && ! TREE_USED (DECL_NAME (decl)) | |
32291f94 MM |
1679 | && ! DECL_EXTERNAL (decl) |
1680 | && ! TREE_PUBLIC (decl) | |
36b29d7d GK |
1681 | /* A volatile variable might be used in some non-obvious way. */ |
1682 | && ! TREE_THIS_VOLATILE (decl) | |
ef4f94ac RH |
1683 | /* Global register variables must be declared to reserve them. */ |
1684 | && ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl)) | |
1685 | /* Otherwise, ask the language. */ | |
1686 | && (*lang_hooks.decls.warn_unused_global) (decl)) | |
32291f94 MM |
1687 | warning_with_decl (decl, "`%s' defined but not used"); |
1688 | ||
33c21f5c HPN |
1689 | /* Avoid confusing the debug information machinery when there are |
1690 | errors. */ | |
1691 | if (errorcount == 0 && sorrycount == 0) | |
1692 | { | |
1693 | timevar_push (TV_SYMOUT); | |
1694 | (*debug_hooks->global_decl) (decl); | |
1695 | timevar_pop (TV_SYMOUT); | |
1696 | } | |
32291f94 MM |
1697 | } |
1698 | } | |
032713aa | 1699 | |
070588f0 | 1700 | /* Save the current INPUT_LOCATION on the top entry in the |
68723fae | 1701 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the |
070588f0 | 1702 | INPUT_LOCATION accordingly. */ |
68723fae MM |
1703 | |
1704 | void | |
e25a75e6 | 1705 | push_srcloc (const char *file, int line) |
68723fae MM |
1706 | { |
1707 | struct file_stack *fs; | |
1708 | ||
703ad42b | 1709 | fs = xmalloc (sizeof (struct file_stack)); |
6060edcb | 1710 | fs->location = input_location; |
68723fae | 1711 | fs->next = input_file_stack; |
640da953 PB |
1712 | input_filename = file; |
1713 | input_line = line; | |
68723fae MM |
1714 | input_file_stack = fs; |
1715 | input_file_stack_tick++; | |
1716 | } | |
1717 | ||
1718 | /* Pop the top entry off the stack of presently open source files. | |
070588f0 NS |
1719 | Restore the INPUT_LOCATION from the new topmost entry on the |
1720 | stack. */ | |
68723fae MM |
1721 | |
1722 | void | |
e25a75e6 | 1723 | pop_srcloc (void) |
68723fae MM |
1724 | { |
1725 | struct file_stack *fs; | |
854a97f0 | 1726 | |
68723fae | 1727 | fs = input_file_stack; |
640da953 | 1728 | input_location = fs->location; |
68723fae MM |
1729 | input_file_stack = fs->next; |
1730 | free (fs); | |
1731 | input_file_stack_tick++; | |
68723fae MM |
1732 | } |
1733 | ||
f5e99456 NB |
1734 | /* Compile an entire translation unit. Write a file of assembly |
1735 | output and various debugging dumps. */ | |
4291d9c8 RS |
1736 | |
1737 | static void | |
e25a75e6 | 1738 | compile_file (void) |
4291d9c8 | 1739 | { |
4291d9c8 RS |
1740 | /* Initialize yet another pass. */ |
1741 | ||
b93a436e | 1742 | init_final (main_input_filename); |
ca29da43 | 1743 | coverage_init (aux_base_name); |
4291d9c8 | 1744 | |
2a9a326b | 1745 | timevar_push (TV_PARSE); |
4291d9c8 | 1746 | |
52dabb6c NB |
1747 | /* Call the parser, which parses the entire file (calling |
1748 | rest_of_compilation for each function). */ | |
ff45c01e | 1749 | (*lang_hooks.parse_file) (set_yydebug); |
4291d9c8 | 1750 | |
7cb4ff28 ZW |
1751 | /* In case there were missing block closers, |
1752 | get us back to the global binding level. */ | |
37207ee7 | 1753 | (*lang_hooks.clear_binding_stack) (); |
4291d9c8 RS |
1754 | |
1755 | /* Compilation is now finished except for writing | |
1756 | what's left of the symbol table output. */ | |
2a9a326b | 1757 | timevar_pop (TV_PARSE); |
4291d9c8 | 1758 | |
1fe65c00 | 1759 | if (flag_syntax_only) |
22703ccc | 1760 | return; |
1fe65c00 | 1761 | |
2b59501b | 1762 | (*lang_hooks.decls.final_write_globals)(); |
4291d9c8 | 1763 | |
e69529cd JH |
1764 | cgraph_varpool_assemble_pending_decls (); |
1765 | ||
ca29da43 NS |
1766 | /* This must occur after the loop to output deferred functions. |
1767 | Else the coverage initializer would not be emitted if all the | |
1768 | functions in this compilation unit were deferred. */ | |
1769 | coverage_finish (); | |
2668793e | 1770 | |
4b8af8d9 JM |
1771 | /* Write out any pending weak symbol declarations. */ |
1772 | ||
1773 | weak_finish (); | |
1774 | ||
854a97f0 | 1775 | /* Do dbx symbols. */ |
2a9a326b | 1776 | timevar_push (TV_SYMOUT); |
7f905405 | 1777 | |
0021b564 JM |
1778 | #ifdef DWARF2_UNWIND_INFO |
1779 | if (dwarf2out_do_frame ()) | |
1780 | dwarf2out_frame_finish (); | |
1781 | #endif | |
1782 | ||
e2a12aca | 1783 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 1784 | timevar_pop (TV_SYMOUT); |
9a666dda | 1785 | |
4291d9c8 RS |
1786 | /* Output some stuff at end of file if nec. */ |
1787 | ||
2a1ee410 RH |
1788 | dw2_output_indirect_constants (); |
1789 | ||
51891abe | 1790 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
61098249 | 1791 | { |
2a9a326b | 1792 | timevar_push (TV_DUMP); |
61098249 | 1793 | open_dump_file (DFI_bp, NULL); |
51891abe JH |
1794 | |
1795 | end_branch_prob (); | |
1796 | ||
61098249 | 1797 | close_dump_file (DFI_bp, NULL, NULL_RTX); |
2a9a326b | 1798 | timevar_pop (TV_DUMP); |
61098249 | 1799 | } |
854a97f0 | 1800 | |
a5fe455b | 1801 | targetm.asm_out.file_end (); |
4291d9c8 | 1802 | |
acb0db7b ZW |
1803 | /* Attach a special .ident directive to the end of the file to identify |
1804 | the version of GCC which compiled this code. The format of the .ident | |
1805 | string is patterned after the ones produced by native SVR4 compilers. */ | |
1806 | #ifdef IDENT_ASM_OP | |
1807 | if (!flag_no_ident) | |
1808 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
1809 | IDENT_ASM_OP, version_string); | |
1810 | #endif | |
1811 | ||
61098249 | 1812 | if (optimize > 0 && open_dump_file (DFI_combine, NULL)) |
4291d9c8 | 1813 | { |
2a9a326b AS |
1814 | timevar_push (TV_DUMP); |
1815 | dump_combine_total_stats (rtl_dump_file); | |
61098249 | 1816 | close_dump_file (DFI_combine, NULL, NULL_RTX); |
2a9a326b | 1817 | timevar_pop (TV_DUMP); |
4291d9c8 | 1818 | } |
4291d9c8 | 1819 | } |
ddc9542b | 1820 | |
4291d9c8 RS |
1821 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, |
1822 | and TYPE_DECL nodes. | |
1823 | ||
ef6748cb MM |
1824 | This does nothing for local (non-static) variables, unless the |
1825 | variable is a register variable with an ASMSPEC. In that case, or | |
d558416e | 1826 | if the variable is not an automatic, it sets up the RTL and |
ef6748cb MM |
1827 | outputs any assembler code (label definition, storage allocation |
1828 | and initialization). | |
4291d9c8 RS |
1829 | |
1830 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
1831 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
1832 | if this declaration is not within a function. */ | |
1833 | ||
1834 | void | |
e25a75e6 AJ |
1835 | rest_of_decl_compilation (tree decl, |
1836 | const char *asmspec, | |
1837 | int top_level, | |
1838 | int at_end) | |
4291d9c8 | 1839 | { |
b14707c3 RH |
1840 | /* We deferred calling assemble_alias so that we could collect |
1841 | other attributes such as visibility. Emit the alias now. */ | |
1842 | { | |
1843 | tree alias; | |
1844 | alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl)); | |
1845 | if (alias) | |
1846 | { | |
1847 | alias = TREE_VALUE (TREE_VALUE (alias)); | |
1848 | alias = get_identifier (TREE_STRING_POINTER (alias)); | |
9cabb1d8 | 1849 | assemble_alias (decl, alias); |
b14707c3 RH |
1850 | } |
1851 | } | |
1852 | ||
4291d9c8 RS |
1853 | /* Forward declarations for nested functions are not "external", |
1854 | but we need to treat them as if they were. */ | |
216d5cdd | 1855 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 | 1856 | || TREE_CODE (decl) == FUNCTION_DECL) |
2a9a326b AS |
1857 | { |
1858 | timevar_push (TV_VARCONST); | |
b14707c3 | 1859 | |
8ce0a8a5 | 1860 | if (asmspec) |
9cabb1d8 | 1861 | make_decl_rtl (decl, asmspec); |
b14707c3 RH |
1862 | |
1863 | /* Don't output anything when a tentative file-scope definition | |
1864 | is seen. But at end of compilation, do output code for them. */ | |
8cf8d8a2 | 1865 | if (at_end || !DECL_DEFER_OUTPUT (decl)) |
e69529cd | 1866 | { |
5c20c06c JH |
1867 | if (flag_unit_at_a_time && !cgraph_global_info_ready |
1868 | && TREE_CODE (decl) != FUNCTION_DECL && top_level) | |
e69529cd JH |
1869 | cgraph_varpool_finalize_decl (decl); |
1870 | else | |
1871 | assemble_variable (decl, top_level, at_end, 0); | |
1872 | } | |
35d8c8e2 SB |
1873 | |
1874 | #ifdef ASM_FINISH_DECLARE_OBJECT | |
2a9a326b AS |
1875 | if (decl == last_assemble_variable_decl) |
1876 | { | |
1877 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
1878 | top_level, at_end); | |
1879 | } | |
35d8c8e2 | 1880 | #endif |
b14707c3 | 1881 | |
2a9a326b AS |
1882 | timevar_pop (TV_VARCONST); |
1883 | } | |
216d5cdd | 1884 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
1885 | { |
1886 | if (decode_reg_name (asmspec) >= 0) | |
1887 | { | |
19e7881c | 1888 | SET_DECL_RTL (decl, NULL_RTX); |
6c418184 | 1889 | make_decl_rtl (decl, asmspec); |
4291d9c8 RS |
1890 | } |
1891 | else | |
8f17b5c5 MM |
1892 | { |
1893 | error ("invalid register name `%s' for register variable", asmspec); | |
1894 | DECL_REGISTER (decl) = 0; | |
19e7881c MM |
1895 | if (!top_level) |
1896 | expand_decl (decl); | |
8f17b5c5 | 1897 | } |
4291d9c8 | 1898 | } |
f246a305 RS |
1899 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
1900 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
1901 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
1902 | { |
1903 | timevar_push (TV_SYMOUT); | |
1904 | dbxout_symbol (decl, 0); | |
1905 | timevar_pop (TV_SYMOUT); | |
1906 | } | |
4291d9c8 RS |
1907 | #endif |
1908 | #ifdef SDB_DEBUGGING_INFO | |
1909 | else if (write_symbols == SDB_DEBUG && top_level | |
1910 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
1911 | { |
1912 | timevar_push (TV_SYMOUT); | |
1913 | sdbout_symbol (decl, 0); | |
1914 | timevar_pop (TV_SYMOUT); | |
1915 | } | |
4291d9c8 | 1916 | #endif |
cc0017a9 ZD |
1917 | #ifdef DWARF2_DEBUGGING_INFO |
1918 | else if ((write_symbols == DWARF2_DEBUG | |
1919 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
1920 | && top_level | |
1921 | && TREE_CODE (decl) == TYPE_DECL) | |
1922 | { | |
1923 | timevar_push (TV_SYMOUT); | |
1924 | dwarf2out_decl (decl); | |
1925 | timevar_pop (TV_SYMOUT); | |
1926 | } | |
1927 | #endif | |
4291d9c8 RS |
1928 | } |
1929 | ||
1930 | /* Called after finishing a record, union or enumeral type. */ | |
1931 | ||
1932 | void | |
e25a75e6 | 1933 | rest_of_type_compilation ( |
35d8c8e2 SB |
1934 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) \ |
1935 | || defined (SDB_DEBUGGING_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
e25a75e6 AJ |
1936 | tree type, |
1937 | int toplev | |
114791ea | 1938 | #else |
e25a75e6 | 1939 | tree type ATTRIBUTE_UNUSED, |
05a0e2af | 1940 | int toplev ATTRIBUTE_UNUSED |
114791ea | 1941 | #endif |
e25a75e6 | 1942 | ) |
4291d9c8 | 1943 | { |
33c21f5c HPN |
1944 | /* Avoid confusing the debug information machinery when there are |
1945 | errors. */ | |
1946 | if (errorcount != 0 || sorrycount != 0) | |
1947 | return; | |
1948 | ||
2a9a326b | 1949 | timevar_push (TV_SYMOUT); |
f246a305 RS |
1950 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
1951 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 1952 | dbxout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 RS |
1953 | #endif |
1954 | #ifdef SDB_DEBUGGING_INFO | |
1955 | if (write_symbols == SDB_DEBUG) | |
d8d1d62b | 1956 | sdbout_symbol (TYPE_STUB_DECL (type), !toplev); |
881c6935 JM |
1957 | #endif |
1958 | #ifdef DWARF2_DEBUGGING_INFO | |
7a0c8d71 DR |
1959 | if ((write_symbols == DWARF2_DEBUG |
1960 | || write_symbols == VMS_AND_DWARF2_DEBUG) | |
1961 | && toplev) | |
881c6935 | 1962 | dwarf2out_decl (TYPE_STUB_DECL (type)); |
4291d9c8 | 1963 | #endif |
2a9a326b | 1964 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
1965 | } |
1966 | ||
ddc9542b AH |
1967 | /* Turn the RTL into assembly. */ |
1968 | static void | |
1969 | rest_of_handle_final (tree decl, rtx insns) | |
4291d9c8 | 1970 | { |
ddc9542b AH |
1971 | timevar_push (TV_FINAL); |
1972 | { | |
1973 | rtx x; | |
1974 | const char *fnname; | |
4291d9c8 | 1975 | |
ddc9542b AH |
1976 | /* Get the function's name, as described by its RTL. This may be |
1977 | different from the DECL_NAME name used in the source file. */ | |
2a9a326b | 1978 | |
ddc9542b AH |
1979 | x = DECL_RTL (decl); |
1980 | if (GET_CODE (x) != MEM) | |
1981 | abort (); | |
1982 | x = XEXP (x, 0); | |
1983 | if (GET_CODE (x) != SYMBOL_REF) | |
1984 | abort (); | |
1985 | fnname = XSTR (x, 0); | |
1b3d8f8a | 1986 | |
ddc9542b AH |
1987 | assemble_start_function (decl, fnname); |
1988 | final_start_function (insns, asm_out_file, optimize); | |
1989 | final (insns, asm_out_file, optimize, 0); | |
1990 | final_end_function (); | |
d511f9d5 | 1991 | |
ddc9542b AH |
1992 | #ifdef IA64_UNWIND_INFO |
1993 | /* ??? The IA-64 ".handlerdata" directive must be issued before | |
1994 | the ".endp" directive that closes the procedure descriptor. */ | |
1995 | output_function_exception_table (); | |
1996 | #endif | |
fcd7f76b | 1997 | |
ddc9542b | 1998 | assemble_end_function (decl, fnname); |
e619323d | 1999 | |
ddc9542b AH |
2000 | #ifndef IA64_UNWIND_INFO |
2001 | /* Otherwise, it feels unclean to switch sections in the middle. */ | |
2002 | output_function_exception_table (); | |
2003 | #endif | |
1f8f4a0b | 2004 | |
ddc9542b AH |
2005 | if (! quiet_flag) |
2006 | fflush (asm_out_file); | |
4291d9c8 | 2007 | |
ddc9542b AH |
2008 | /* Release all memory allocated by flow. */ |
2009 | free_basic_block_vars (0); | |
14a774a9 | 2010 | |
ddc9542b AH |
2011 | /* Release all memory held by regsets now. */ |
2012 | regset_release_memory (); | |
2013 | } | |
2014 | timevar_pop (TV_FINAL); | |
4291d9c8 | 2015 | |
ddc9542b AH |
2016 | ggc_collect (); |
2017 | } | |
4291d9c8 | 2018 | |
ddc9542b AH |
2019 | #ifdef DELAY_SLOTS |
2020 | /* Run delay slot optimization. */ | |
2021 | static void | |
2022 | rest_of_handle_delay_slots (tree decl, rtx insns) | |
2023 | { | |
2024 | timevar_push (TV_DBR_SCHED); | |
2025 | open_dump_file (DFI_dbr, decl); | |
4291d9c8 | 2026 | |
ddc9542b | 2027 | dbr_schedule (insns, rtl_dump_file); |
4291d9c8 | 2028 | |
ddc9542b AH |
2029 | close_dump_file (DFI_dbr, print_rtl, insns); |
2030 | timevar_pop (TV_DBR_SCHED); | |
f93dacbd | 2031 | |
ddc9542b AH |
2032 | ggc_collect (); |
2033 | } | |
2034 | #endif | |
3c030e88 | 2035 | |
ddc9542b AH |
2036 | #ifdef STACK_REGS |
2037 | /* Convert register usage from flat register file usage to a stack | |
2038 | register file. */ | |
2039 | static void | |
2040 | rest_of_handle_stack_regs (tree decl, rtx insns) | |
2041 | { | |
2042 | timevar_push (TV_REG_STACK); | |
2043 | open_dump_file (DFI_stack, decl); | |
a701efba | 2044 | |
ddc9542b AH |
2045 | if (reg_to_stack (insns, rtl_dump_file) && optimize) |
2046 | { | |
2047 | if (cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK | |
2048 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)) | |
2049 | && flag_reorder_blocks) | |
2050 | { | |
2051 | reorder_basic_blocks (); | |
2052 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK); | |
4291d9c8 | 2053 | } |
b8471b65 | 2054 | } |
07af9d16 | 2055 | |
ddc9542b AH |
2056 | close_dump_file (DFI_stack, print_rtl_with_bb, insns); |
2057 | timevar_pop (TV_REG_STACK); | |
c28abdf0 | 2058 | |
1f8f4a0b | 2059 | ggc_collect (); |
ddc9542b AH |
2060 | } |
2061 | #endif | |
0a1c58a2 | 2062 | |
49ad7cfa | 2063 | |
ddc9542b AH |
2064 | /* Machine independent reorg pass. */ |
2065 | static void | |
2066 | rest_of_handle_machine_reorg (tree decl, rtx insns) | |
2067 | { | |
2068 | timevar_push (TV_MACH_DEP); | |
2069 | open_dump_file (DFI_mach, decl); | |
4291d9c8 | 2070 | |
ddc9542b | 2071 | (*targetm.machine_dependent_reorg) (); |
21c7361e | 2072 | |
ddc9542b AH |
2073 | close_dump_file (DFI_mach, print_rtl, insns); |
2074 | timevar_pop (TV_MACH_DEP); | |
4291d9c8 | 2075 | |
ddc9542b AH |
2076 | ggc_collect (); |
2077 | } | |
d92b4486 | 2078 | |
969d70ca | 2079 | |
ddc9542b AH |
2080 | /* Run new register allocator. Return TRUE if we must exit |
2081 | rest_of_compilation upon return. */ | |
2082 | static bool | |
2083 | rest_of_handle_new_regalloc (tree decl, rtx insns, int *rebuild_notes) | |
2084 | { | |
2085 | int failure; | |
ac228d4e | 2086 | |
ddc9542b AH |
2087 | delete_trivially_dead_insns (insns, max_reg_num ()); |
2088 | reg_alloc (); | |
969d70ca | 2089 | |
ddc9542b AH |
2090 | timevar_pop (TV_LOCAL_ALLOC); |
2091 | if (dump_file[DFI_lreg].enabled) | |
9d9e5c09 | 2092 | { |
ddc9542b | 2093 | timevar_push (TV_DUMP); |
9d9e5c09 | 2094 | |
ddc9542b AH |
2095 | close_dump_file (DFI_lreg, NULL, NULL); |
2096 | timevar_pop (TV_DUMP); | |
2097 | } | |
5204d665 | 2098 | |
ddc9542b AH |
2099 | /* XXX clean up the whole mess to bring live info in shape again. */ |
2100 | timevar_push (TV_GLOBAL_ALLOC); | |
2101 | open_dump_file (DFI_greg, decl); | |
d92b4486 | 2102 | |
ddc9542b AH |
2103 | build_insn_chain (insns); |
2104 | failure = reload (insns, 0); | |
2a9a326b | 2105 | |
ddc9542b AH |
2106 | timevar_pop (TV_GLOBAL_ALLOC); |
2107 | ||
2108 | if (dump_file[DFI_greg].enabled) | |
52a11cbf | 2109 | { |
ddc9542b | 2110 | timevar_push (TV_DUMP); |
52a11cbf | 2111 | |
ddc9542b | 2112 | dump_global_regs (rtl_dump_file); |
52a11cbf | 2113 | |
ddc9542b AH |
2114 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); |
2115 | timevar_pop (TV_DUMP); | |
52a11cbf RH |
2116 | } |
2117 | ||
ddc9542b AH |
2118 | if (failure) |
2119 | return true; | |
4291d9c8 | 2120 | |
ddc9542b AH |
2121 | reload_completed = 1; |
2122 | *rebuild_notes = 0; | |
4291d9c8 | 2123 | |
ddc9542b AH |
2124 | return false; |
2125 | } | |
4291d9c8 | 2126 | |
ddc9542b AH |
2127 | /* Run old register allocator. Return TRUE if we must exit |
2128 | rest_of_compilation upon return. */ | |
2129 | static bool | |
2130 | rest_of_handle_old_regalloc (tree decl, rtx insns, int *rebuild_notes) | |
2131 | { | |
2132 | int failure; | |
c9ec4f99 | 2133 | |
ddc9542b AH |
2134 | /* Allocate the reg_renumber array. */ |
2135 | allocate_reg_info (max_regno, FALSE, TRUE); | |
4291d9c8 | 2136 | |
ddc9542b | 2137 | /* And the reg_equiv_memory_loc array. */ |
703ad42b | 2138 | reg_equiv_memory_loc = xcalloc (max_regno, sizeof (rtx)); |
02db399d | 2139 | |
ddc9542b | 2140 | allocate_initial_values (reg_equiv_memory_loc); |
994a57cd | 2141 | |
ddc9542b AH |
2142 | regclass (insns, max_reg_num (), rtl_dump_file); |
2143 | *rebuild_notes = local_alloc (); | |
2a9a326b | 2144 | |
ddc9542b | 2145 | timevar_pop (TV_LOCAL_ALLOC); |
3c030e88 | 2146 | |
ddc9542b | 2147 | if (dump_file[DFI_lreg].enabled) |
1c4a429a | 2148 | { |
ddc9542b AH |
2149 | timevar_push (TV_DUMP); |
2150 | ||
2151 | dump_flow_info (rtl_dump_file); | |
2152 | dump_local_alloc (rtl_dump_file); | |
2153 | ||
2154 | close_dump_file (DFI_lreg, print_rtl_with_bb, insns); | |
2155 | timevar_pop (TV_DUMP); | |
1c4a429a | 2156 | } |
2a9a326b | 2157 | |
ddc9542b | 2158 | ggc_collect (); |
673b5311 | 2159 | |
ddc9542b AH |
2160 | timevar_push (TV_GLOBAL_ALLOC); |
2161 | open_dump_file (DFI_greg, decl); | |
2162 | ||
2163 | /* If optimizing, allocate remaining pseudo-regs. Do the reload | |
2164 | pass fixing up any insns that are invalid. */ | |
2165 | ||
2166 | if (optimize) | |
2167 | failure = global_alloc (rtl_dump_file); | |
2168 | else | |
a18820c6 | 2169 | { |
ddc9542b AH |
2170 | build_insn_chain (insns); |
2171 | failure = reload (insns, 0); | |
a18820c6 RH |
2172 | } |
2173 | ||
ddc9542b | 2174 | timevar_pop (TV_GLOBAL_ALLOC); |
0826f1d8 | 2175 | |
ddc9542b AH |
2176 | if (dump_file[DFI_greg].enabled) |
2177 | { | |
2178 | timevar_push (TV_DUMP); | |
0826f1d8 | 2179 | |
ddc9542b | 2180 | dump_global_regs (rtl_dump_file); |
0826f1d8 | 2181 | |
ddc9542b AH |
2182 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); |
2183 | timevar_pop (TV_DUMP); | |
2184 | } | |
0826f1d8 | 2185 | |
ddc9542b AH |
2186 | return failure; |
2187 | } | |
0b47e4c1 | 2188 | |
ddc9542b AH |
2189 | /* Run the regrename and cprop passes. */ |
2190 | static void | |
2191 | rest_of_handle_regrename (tree decl, rtx insns) | |
2192 | { | |
2193 | timevar_push (TV_RENAME_REGISTERS); | |
2194 | open_dump_file (DFI_rnreg, decl); | |
0b47e4c1 | 2195 | |
ddc9542b AH |
2196 | if (flag_rename_registers) |
2197 | regrename_optimize (); | |
2198 | if (flag_cprop_registers) | |
2199 | copyprop_hardreg_forward (); | |
0b47e4c1 | 2200 | |
ddc9542b AH |
2201 | close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); |
2202 | timevar_pop (TV_RENAME_REGISTERS); | |
2203 | } | |
0b47e4c1 | 2204 | |
ddc9542b AH |
2205 | /* Reorder basic blocks. */ |
2206 | static void | |
2207 | rest_of_handle_reorder_blocks (tree decl, rtx insns) | |
2208 | { | |
2209 | timevar_push (TV_REORDER_BLOCKS); | |
2210 | open_dump_file (DFI_bbro, decl); | |
2211 | ||
2212 | /* Last attempt to optimize CFG, as scheduling, peepholing and insn | |
2213 | splitting possibly introduced more crossjumping opportunities. */ | |
2214 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE | |
2215 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
2216 | ||
2217 | if (flag_sched2_use_traces && flag_schedule_insns_after_reload) | |
2218 | tracer (); | |
2219 | if (flag_reorder_blocks) | |
2220 | reorder_basic_blocks (); | |
2221 | if (flag_reorder_blocks | |
2222 | || (flag_sched2_use_traces && flag_schedule_insns_after_reload)) | |
2223 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); | |
2224 | ||
2225 | close_dump_file (DFI_bbro, print_rtl_with_bb, insns); | |
2226 | timevar_pop (TV_REORDER_BLOCKS); | |
e25a75e6 | 2227 | } |
ddc9542b | 2228 | |
a2f8629a | 2229 | #ifdef INSN_SCHEDULING |
ddc9542b AH |
2230 | /* Run instruction scheduler. */ |
2231 | static void | |
2232 | rest_of_handle_sched (tree decl, rtx insns) | |
2233 | { | |
2234 | timevar_push (TV_SCHED); | |
0826f1d8 | 2235 | |
ddc9542b AH |
2236 | /* Print function header into sched dump now |
2237 | because doing the sched analysis makes some of the dump. */ | |
2238 | if (optimize > 0 && flag_schedule_insns) | |
2239 | { | |
2240 | open_dump_file (DFI_sched, decl); | |
0826f1d8 | 2241 | |
ddc9542b AH |
2242 | /* Do control and data sched analysis, |
2243 | and write some of the results to dump file. */ | |
0826f1d8 | 2244 | |
ddc9542b | 2245 | schedule_insns (rtl_dump_file); |
0826f1d8 | 2246 | |
ddc9542b AH |
2247 | close_dump_file (DFI_sched, print_rtl_with_bb, insns); |
2248 | } | |
ddc9542b | 2249 | timevar_pop (TV_SCHED); |
0826f1d8 | 2250 | |
ddc9542b AH |
2251 | ggc_collect (); |
2252 | } | |
0826f1d8 | 2253 | |
ddc9542b AH |
2254 | /* Run second scheduling pass after reload. */ |
2255 | static void | |
2256 | rest_of_handle_sched2 (tree decl, rtx insns) | |
2257 | { | |
2258 | timevar_push (TV_SCHED2); | |
2259 | open_dump_file (DFI_sched2, decl); | |
0826f1d8 | 2260 | |
ddc9542b AH |
2261 | /* Do control and data sched analysis again, |
2262 | and write some more of the results to dump file. */ | |
0826f1d8 | 2263 | |
ddc9542b | 2264 | split_all_insns (1); |
0826f1d8 | 2265 | |
ddc9542b AH |
2266 | if (flag_sched2_use_superblocks || flag_sched2_use_traces) |
2267 | { | |
2268 | schedule_ebbs (rtl_dump_file); | |
2269 | /* No liveness updating code yet, but it should be easy to do. | |
2270 | reg-stack recompute the liveness when needed for now. */ | |
2271 | count_or_remove_death_notes (NULL, 1); | |
2272 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
0826f1d8 | 2273 | } |
ddc9542b AH |
2274 | else |
2275 | schedule_insns (rtl_dump_file); | |
0826f1d8 | 2276 | |
ddc9542b AH |
2277 | close_dump_file (DFI_sched2, print_rtl_with_bb, insns); |
2278 | timevar_pop (TV_SCHED2); | |
9ec6d7ab | 2279 | |
ddc9542b AH |
2280 | ggc_collect (); |
2281 | } | |
2282 | #endif | |
38c1593d | 2283 | |
ddc9542b AH |
2284 | /* Register allocation pre-pass, to reduce number of moves necessary |
2285 | for two-address machines. */ | |
2286 | static void | |
2287 | rest_of_handle_regmove (tree decl, rtx insns) | |
2288 | { | |
2289 | timevar_push (TV_REGMOVE); | |
2290 | open_dump_file (DFI_regmove, decl); | |
2a9a326b | 2291 | |
ddc9542b | 2292 | regmove_optimize (insns, max_reg_num (), rtl_dump_file); |
a18820c6 | 2293 | |
ddc9542b AH |
2294 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); |
2295 | close_dump_file (DFI_regmove, print_rtl_with_bb, insns); | |
2296 | timevar_pop (TV_REGMOVE); | |
dfdb644f | 2297 | |
1f8f4a0b | 2298 | ggc_collect (); |
ddc9542b | 2299 | } |
a3770a81 | 2300 | |
ddc9542b AH |
2301 | /* Run tracer. */ |
2302 | static void | |
2303 | rest_of_handle_tracer (tree decl, rtx insns) | |
2304 | { | |
2305 | timevar_push (TV_TRACER); | |
2306 | open_dump_file (DFI_tracer, decl); | |
2307 | if (rtl_dump_file) | |
2308 | dump_flow_info (rtl_dump_file); | |
2309 | tracer (); | |
2310 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2311 | reg_scan (insns, max_reg_num (), 0); | |
2312 | close_dump_file (DFI_tracer, print_rtl_with_bb, get_insns ()); | |
2313 | timevar_pop (TV_TRACER); | |
2314 | } | |
4291d9c8 | 2315 | |
ddc9542b AH |
2316 | /* If-conversion and CFG cleanup. */ |
2317 | static void | |
2318 | rest_of_handle_if_conversion (tree decl, rtx insns) | |
2319 | { | |
2320 | open_dump_file (DFI_ce1, decl); | |
2321 | if (flag_if_conversion) | |
4291d9c8 | 2322 | { |
ddc9542b | 2323 | timevar_push (TV_IFCVT); |
38c1593d JH |
2324 | if (rtl_dump_file) |
2325 | dump_flow_info (rtl_dump_file); | |
ddc9542b AH |
2326 | cleanup_cfg (CLEANUP_EXPENSIVE); |
2327 | reg_scan (insns, max_reg_num (), 0); | |
2328 | if_convert (0); | |
2329 | timevar_pop (TV_IFCVT); | |
2330 | } | |
2331 | timevar_push (TV_JUMP); | |
2332 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2333 | reg_scan (insns, max_reg_num (), 0); | |
2334 | timevar_pop (TV_JUMP); | |
2335 | close_dump_file (DFI_ce1, print_rtl_with_bb, get_insns ()); | |
2336 | } | |
032713aa | 2337 | |
ddc9542b AH |
2338 | /* Rerun if-conversion, as combine may have simplified things enough |
2339 | to now meet sequence length restrictions. */ | |
2340 | static void | |
2341 | rest_of_handle_if_after_combine (tree decl, rtx insns) | |
2342 | { | |
2343 | timevar_push (TV_IFCVT); | |
2344 | open_dump_file (DFI_ce2, decl); | |
4291d9c8 | 2345 | |
ddc9542b AH |
2346 | no_new_pseudos = 0; |
2347 | if_convert (1); | |
2348 | no_new_pseudos = 1; | |
a18820c6 | 2349 | |
ddc9542b AH |
2350 | close_dump_file (DFI_ce2, print_rtl_with_bb, insns); |
2351 | timevar_pop (TV_IFCVT); | |
2352 | } | |
2ca6672b | 2353 | |
ddc9542b AH |
2354 | /* Do branch profiling and static profile estimation passes. */ |
2355 | static void | |
2356 | rest_of_handle_branch_prob (tree decl, rtx insns) | |
2357 | { | |
2358 | struct loops loops; | |
c5c76735 | 2359 | |
ddc9542b AH |
2360 | timevar_push (TV_BRANCH_PROB); |
2361 | open_dump_file (DFI_bp, decl); | |
2362 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) | |
2363 | branch_prob (); | |
2a9a326b | 2364 | |
ddc9542b AH |
2365 | /* Discover and record the loop depth at the head of each basic |
2366 | block. The loop infrastructure does the real job for us. */ | |
2367 | flow_loops_find (&loops, LOOP_TREE); | |
2368 | ||
2369 | if (rtl_dump_file) | |
2370 | flow_loops_dump (&loops, rtl_dump_file, NULL, 0); | |
4291d9c8 | 2371 | |
ddc9542b AH |
2372 | /* Estimate using heuristics if no profiling info is available. */ |
2373 | if (flag_guess_branch_prob) | |
2374 | estimate_probability (&loops); | |
735a0e33 | 2375 | |
ddc9542b AH |
2376 | flow_loops_free (&loops); |
2377 | close_dump_file (DFI_bp, print_rtl_with_bb, insns); | |
2378 | timevar_pop (TV_BRANCH_PROB); | |
2379 | } | |
2380 | ||
2381 | /* Do control and data flow analysis; write some of the results to the | |
2382 | dump file. */ | |
2383 | static void | |
2384 | rest_of_handle_cfg (tree decl, rtx insns) | |
2385 | { | |
2386 | open_dump_file (DFI_cfg, decl); | |
2387 | if (rtl_dump_file) | |
2388 | dump_flow_info (rtl_dump_file); | |
2389 | if (optimize) | |
2390 | cleanup_cfg (CLEANUP_EXPENSIVE | |
2391 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
2392 | ||
2393 | /* It may make more sense to mark constant functions after dead code is | |
2394 | eliminated by life_analysis, but we need to do it early, as -fprofile-arcs | |
2395 | may insert code making function non-constant, but we still must consider | |
2396 | it as constant, otherwise -fbranch-probabilities will not read data back. | |
2397 | ||
2398 | life_analysis rarely eliminates modification of external memory. | |
2399 | */ | |
2400 | if (optimize) | |
2401 | mark_constant_function (); | |
4291d9c8 | 2402 | |
ddc9542b AH |
2403 | close_dump_file (DFI_cfg, print_rtl_with_bb, insns); |
2404 | } | |
2405 | ||
2406 | /* Purge addressofs. */ | |
2407 | static void | |
f129791c | 2408 | rest_of_handle_addressof (tree decl, rtx insns) |
ddc9542b | 2409 | { |
61098249 RH |
2410 | open_dump_file (DFI_addressof, decl); |
2411 | ||
e9a25f70 | 2412 | purge_addressof (insns); |
f129791c EB |
2413 | if (optimize && purge_all_dead_edges (0)) |
2414 | delete_unreachable_blocks (); | |
e9a25f70 JL |
2415 | reg_scan (insns, max_reg_num (), 1); |
2416 | ||
61098249 | 2417 | close_dump_file (DFI_addressof, print_rtl, insns); |
ddc9542b | 2418 | } |
735a0e33 | 2419 | |
ddc9542b AH |
2420 | /* We may have potential sibling or tail recursion sites. Select one |
2421 | (of possibly multiple) methods of performing the call. */ | |
2422 | static void | |
2423 | rest_of_handle_sibling_calls (rtx insns) | |
2424 | { | |
2425 | rtx insn; | |
2426 | optimize_sibling_and_tail_recursive_calls (); | |
2427 | ||
2428 | /* Recompute the CFG as sibling optimization clobbers it randomly. */ | |
2429 | free_bb_for_insn (); | |
2430 | find_exception_handler_labels (); | |
2431 | rebuild_jump_labels (insns); | |
2432 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
a3770a81 | 2433 | |
ddc9542b AH |
2434 | /* There is pass ordering problem - we must lower NOTE_INSN_PREDICTION |
2435 | notes before simplifying cfg and we must do lowering after sibcall | |
2436 | that unhides parts of RTL chain and cleans up the CFG. | |
7506f491 | 2437 | |
ddc9542b AH |
2438 | Until sibcall is replaced by tree-level optimizer, lets just |
2439 | sweep away the NOTE_INSN_PREDICTION notes that leaked out. */ | |
2440 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) | |
2441 | if (GET_CODE (insn) == NOTE | |
2442 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_PREDICTION) | |
2443 | delete_insn (insn); | |
2444 | ||
2445 | close_dump_file (DFI_sibling, print_rtl, get_insns ()); | |
2446 | } | |
2447 | ||
2448 | /* Perform jump bypassing and control flow optimizations. */ | |
2449 | static void | |
2450 | rest_of_handle_jump_bypass (tree decl, rtx insns) | |
2451 | { | |
2452 | timevar_push (TV_BYPASS); | |
2453 | open_dump_file (DFI_bypass, decl); | |
48aba75b | 2454 | |
ddc9542b | 2455 | cleanup_cfg (CLEANUP_EXPENSIVE); |
735a0e33 | 2456 | |
ddc9542b AH |
2457 | if (bypass_jumps (rtl_dump_file)) |
2458 | { | |
b90e45ae | 2459 | rebuild_jump_labels (insns); |
ddc9542b | 2460 | cleanup_cfg (CLEANUP_EXPENSIVE); |
2ca6672b | 2461 | delete_trivially_dead_insns (insns, max_reg_num ()); |
ddc9542b | 2462 | } |
e78d9500 | 2463 | |
ddc9542b AH |
2464 | close_dump_file (DFI_bypass, print_rtl_with_bb, insns); |
2465 | timevar_pop (TV_BYPASS); | |
791f5e8d | 2466 | |
ddc9542b | 2467 | ggc_collect (); |
3d1f4922 | 2468 | |
ddc9542b AH |
2469 | #ifdef ENABLE_CHECKING |
2470 | verify_flow_info (); | |
2471 | #endif | |
2472 | } | |
5262d6b6 | 2473 | |
ddc9542b AH |
2474 | /* Handle inlining of functions in rest_of_compilation. Return TRUE |
2475 | if we must exit rest_of_compilation upon return. */ | |
2476 | static bool | |
2477 | rest_of_handle_inlining (tree decl) | |
2478 | { | |
2479 | rtx insns; | |
2480 | int inlinable = 0; | |
2481 | tree parent; | |
2482 | const char *lose; | |
2483 | ||
2484 | /* If we are reconsidering an inline function at the end of | |
2485 | compilation, skip the stuff for making it inline. */ | |
2486 | if (DECL_SAVED_INSNS (decl) != 0) | |
2487 | return 0; | |
2488 | ||
2489 | /* If this is nested inside an inlined external function, pretend | |
2490 | it was only declared. Since we cannot inline such functions, | |
2491 | generating code for this one is not only not necessary but will | |
2492 | confuse some debugging output writers. */ | |
2493 | for (parent = DECL_CONTEXT (current_function_decl); | |
2494 | parent != NULL_TREE; | |
2495 | parent = get_containing_scope (parent)) | |
2496 | if (TREE_CODE (parent) == FUNCTION_DECL | |
2497 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
2498 | { | |
2499 | DECL_INITIAL (decl) = 0; | |
2500 | return true; | |
2501 | } | |
2502 | else if (TYPE_P (parent)) | |
2503 | /* A function in a local class should be treated normally. */ | |
2504 | break; | |
48aba75b | 2505 | |
ddc9542b AH |
2506 | /* If requested, consider whether to make this function inline. */ |
2507 | if ((DECL_INLINE (decl) && !flag_no_inline) | |
2508 | || flag_inline_functions) | |
2509 | { | |
2510 | timevar_push (TV_INTEGRATION); | |
2511 | lose = function_cannot_inline_p (decl); | |
2512 | timevar_pop (TV_INTEGRATION); | |
2513 | if (lose || ! optimize) | |
2514 | { | |
2515 | if (warn_inline && DECL_INLINE (decl)) | |
2516 | warning_with_decl (decl, lose); | |
2517 | DECL_ABSTRACT_ORIGIN (decl) = 0; | |
2518 | /* Don't really compile an extern inline function. | |
2519 | If we can't make it inline, pretend | |
2520 | it was only declared. */ | |
2521 | if (DECL_EXTERNAL (decl)) | |
48aba75b | 2522 | { |
ddc9542b AH |
2523 | DECL_INITIAL (decl) = 0; |
2524 | return true; | |
48aba75b | 2525 | } |
854a97f0 | 2526 | } |
ddc9542b AH |
2527 | else { |
2528 | /* ??? Note that we used to just make it look like if | |
2529 | the "inline" keyword was specified when we decide | |
2530 | to inline it (because of -finline-functions). | |
2531 | garloff@suse.de, 2002-04-24: Add another flag to | |
2532 | actually record this piece of information. */ | |
2533 | if (!DECL_INLINE (decl)) | |
2534 | DID_INLINE_FUNC (decl) = 1; | |
2535 | inlinable = DECL_INLINE (decl) = 1; | |
2536 | } | |
a01da83b | 2537 | } |
a18820c6 | 2538 | |
ddc9542b AH |
2539 | insns = get_insns (); |
2540 | ||
2541 | /* Dump the rtl code if we are dumping rtl. */ | |
4291d9c8 | 2542 | |
ddc9542b | 2543 | if (open_dump_file (DFI_rtl, decl)) |
4291d9c8 | 2544 | { |
ddc9542b AH |
2545 | if (DECL_SAVED_INSNS (decl)) |
2546 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
2547 | close_dump_file (DFI_rtl, print_rtl, insns); | |
2548 | } | |
5e1afb11 | 2549 | |
ddc9542b AH |
2550 | /* Convert from NOTE_INSN_EH_REGION style notes, and do other |
2551 | sorts of eh initialization. Delay this until after the | |
2552 | initial rtl dump so that we can see the original nesting. */ | |
2553 | convert_from_eh_region_ranges (); | |
2554 | ||
2555 | /* If function is inline, and we don't yet know whether to | |
2556 | compile it by itself, defer decision till end of compilation. | |
2557 | wrapup_global_declarations will (indirectly) call | |
2558 | rest_of_compilation again for those functions that need to | |
2559 | be output. Also defer those functions that we are supposed | |
2560 | to defer. */ | |
2561 | ||
2562 | if (inlinable | |
2563 | || (DECL_INLINE (decl) | |
2564 | && flag_inline_functions | |
2565 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
2566 | && ! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) | |
2567 | && ! flag_keep_inline_functions) | |
2568 | || DECL_EXTERNAL (decl)))) | |
2569 | DECL_DEFER_OUTPUT (decl) = 1; | |
854a97f0 | 2570 | |
ddc9542b AH |
2571 | if (DECL_INLINE (decl)) |
2572 | /* DWARF wants separate debugging info for abstract and | |
2573 | concrete instances of all inline functions, including those | |
2574 | declared inline but not inlined, and those inlined even | |
2575 | though they weren't declared inline. Conveniently, that's | |
2576 | what DECL_INLINE means at this point. */ | |
2577 | (*debug_hooks->deferred_inline_function) (decl); | |
2578 | ||
2579 | if (DECL_DEFER_OUTPUT (decl)) | |
2580 | { | |
2581 | /* If -Wreturn-type, we have to do a bit of compilation. We just | |
2582 | want to call cleanup the cfg to figure out whether or not we can | |
2583 | fall off the end of the function; we do the minimum amount of | |
2584 | work necessary to make that safe. */ | |
2585 | if (warn_return_type) | |
2a9a326b | 2586 | { |
ddc9542b | 2587 | int saved_optimize = optimize; |
01f62f01 | 2588 | |
ddc9542b AH |
2589 | optimize = 0; |
2590 | rebuild_jump_labels (insns); | |
2591 | find_exception_handler_labels (); | |
2592 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2593 | cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP); | |
2594 | optimize = saved_optimize; | |
c6a26dc4 | 2595 | |
ddc9542b AH |
2596 | /* CFG is no longer maintained up-to-date. */ |
2597 | free_bb_for_insn (); | |
2a9a326b | 2598 | } |
a3770a81 | 2599 | |
ddc9542b AH |
2600 | set_nothrow_function_flags (); |
2601 | if (current_function_nothrow) | |
2602 | /* Now we know that this can't throw; set the flag for the benefit | |
2603 | of other functions later in this translation unit. */ | |
2604 | TREE_NOTHROW (current_function_decl) = 1; | |
2605 | ||
2606 | timevar_push (TV_INTEGRATION); | |
2607 | save_for_inline (decl); | |
2608 | timevar_pop (TV_INTEGRATION); | |
2609 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; | |
2610 | return true; | |
4291d9c8 RS |
2611 | } |
2612 | ||
ddc9542b AH |
2613 | /* If specified extern inline but we aren't inlining it, we are |
2614 | done. This goes for anything that gets here with DECL_EXTERNAL | |
2615 | set, not just things with DECL_INLINE. */ | |
2616 | return (bool) DECL_EXTERNAL (decl); | |
2617 | } | |
a0134312 | 2618 | |
ddc9542b AH |
2619 | /* Rest of compilation helper to convert the rtl to SSA form. */ |
2620 | static rtx | |
2621 | rest_of_handle_ssa (tree decl, rtx insns) | |
2622 | { | |
2623 | timevar_push (TV_TO_SSA); | |
2624 | open_dump_file (DFI_ssa, decl); | |
a0134312 | 2625 | |
ddc9542b AH |
2626 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2627 | convert_to_ssa (); | |
a0134312 | 2628 | |
ddc9542b AH |
2629 | close_dump_file (DFI_ssa, print_rtl_with_bb, insns); |
2630 | timevar_pop (TV_TO_SSA); | |
a0134312 | 2631 | |
ddc9542b AH |
2632 | /* Perform sparse conditional constant propagation, if requested. */ |
2633 | if (flag_ssa_ccp) | |
2634 | { | |
2635 | timevar_push (TV_SSA_CCP); | |
2636 | open_dump_file (DFI_ssa_ccp, decl); | |
a0134312 | 2637 | |
ddc9542b AH |
2638 | ssa_const_prop (); |
2639 | ||
2640 | close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ()); | |
2641 | timevar_pop (TV_SSA_CCP); | |
a0134312 RS |
2642 | } |
2643 | ||
ddc9542b AH |
2644 | /* It would be useful to cleanup the CFG at this point, but block |
2645 | merging and possibly other transformations might leave a PHI | |
2646 | node in the middle of a basic block, which is a strict no-no. */ | |
38c1593d | 2647 | |
ddc9542b AH |
2648 | /* The SSA implementation uses basic block numbers in its phi |
2649 | nodes. Thus, changing the control-flow graph or the basic | |
2650 | blocks, e.g., calling find_basic_blocks () or cleanup_cfg (), | |
2651 | may cause problems. */ | |
38c1593d | 2652 | |
ddc9542b AH |
2653 | if (flag_ssa_dce) |
2654 | { | |
2655 | /* Remove dead code. */ | |
38c1593d | 2656 | |
ddc9542b AH |
2657 | timevar_push (TV_SSA_DCE); |
2658 | open_dump_file (DFI_ssa_dce, decl); | |
38c1593d | 2659 | |
ddc9542b AH |
2660 | insns = get_insns (); |
2661 | ssa_eliminate_dead_code (); | |
38c1593d | 2662 | |
ddc9542b AH |
2663 | close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns); |
2664 | timevar_pop (TV_SSA_DCE); | |
2665 | } | |
38c1593d | 2666 | |
ddc9542b | 2667 | /* Convert from SSA form. */ |
38c1593d | 2668 | |
ddc9542b AH |
2669 | timevar_push (TV_FROM_SSA); |
2670 | open_dump_file (DFI_ussa, decl); | |
38c1593d | 2671 | |
ddc9542b AH |
2672 | convert_from_ssa (); |
2673 | /* New registers have been created. Rescan their usage. */ | |
2674 | reg_scan (insns, max_reg_num (), 1); | |
7e51e626 | 2675 | |
ddc9542b AH |
2676 | close_dump_file (DFI_ussa, print_rtl_with_bb, insns); |
2677 | timevar_pop (TV_FROM_SSA); | |
38c1593d | 2678 | |
ddc9542b AH |
2679 | ggc_collect (); |
2680 | ||
2681 | return insns; | |
2682 | } | |
2683 | ||
2684 | /* Try to identify useless null pointer tests and delete them. */ | |
2685 | static void | |
2686 | rest_of_handle_null_pointer (tree decl, rtx insns) | |
2687 | { | |
2688 | open_dump_file (DFI_null, decl); | |
2689 | if (rtl_dump_file) | |
2690 | dump_flow_info (rtl_dump_file); | |
2691 | ||
2692 | if (delete_null_pointer_checks (insns)) | |
2693 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
2694 | ||
2695 | close_dump_file (DFI_null, print_rtl_with_bb, insns); | |
2696 | } | |
2697 | ||
2698 | /* Try combining insns through substitution. */ | |
2699 | static void | |
2700 | rest_of_handle_combine (tree decl, rtx insns) | |
2701 | { | |
2702 | int rebuild_jump_labels_after_combine = 0; | |
2703 | ||
2704 | timevar_push (TV_COMBINE); | |
2705 | open_dump_file (DFI_combine, decl); | |
2706 | ||
2707 | rebuild_jump_labels_after_combine | |
2708 | = combine_instructions (insns, max_reg_num ()); | |
2709 | ||
2710 | /* Combining insns may have turned an indirect jump into a | |
2711 | direct jump. Rebuild the JUMP_LABEL fields of jumping | |
2712 | instructions. */ | |
2713 | if (rebuild_jump_labels_after_combine) | |
2714 | { | |
2715 | timevar_push (TV_JUMP); | |
2716 | rebuild_jump_labels (insns); | |
2717 | timevar_pop (TV_JUMP); | |
2718 | ||
2719 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE); | |
38c1593d | 2720 | } |
ddc9542b AH |
2721 | |
2722 | close_dump_file (DFI_combine, print_rtl_with_bb, insns); | |
2723 | timevar_pop (TV_COMBINE); | |
2724 | ||
2725 | ggc_collect (); | |
2726 | } | |
2727 | ||
2728 | /* Perform life analysis. */ | |
2729 | static void | |
2730 | rest_of_handle_life (tree decl, rtx insns) | |
2731 | { | |
2732 | open_dump_file (DFI_life, decl); | |
2733 | regclass_init (); | |
2734 | ||
2735 | #ifdef ENABLE_CHECKING | |
2736 | verify_flow_info (); | |
2737 | #endif | |
2738 | life_analysis (insns, rtl_dump_file, PROP_FINAL); | |
2739 | if (optimize) | |
2740 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_UPDATE_LIFE | |
2741 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
2742 | timevar_pop (TV_FLOW); | |
2743 | ||
2744 | if (warn_uninitialized) | |
0fb53e68 | 2745 | { |
ddc9542b AH |
2746 | uninitialized_vars_warning (DECL_INITIAL (decl)); |
2747 | if (extra_warnings) | |
2748 | setjmp_args_warning (); | |
2749 | } | |
2750 | ||
2751 | if (optimize) | |
2752 | { | |
2753 | if (!flag_new_regalloc && initialize_uninitialized_subregs ()) | |
fc8dfa20 | 2754 | { |
ddc9542b AH |
2755 | /* Insns were inserted, and possibly pseudos created, so |
2756 | things might look a bit different. */ | |
2757 | insns = get_insns (); | |
2758 | allocate_reg_life_data (); | |
2759 | update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, | |
2760 | PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES); | |
fc8dfa20 | 2761 | } |
ddc9542b AH |
2762 | } |
2763 | ||
2764 | no_new_pseudos = 1; | |
2765 | ||
2766 | close_dump_file (DFI_life, print_rtl_with_bb, insns); | |
2767 | ||
2768 | ggc_collect (); | |
2769 | } | |
2770 | ||
2771 | /* Perform common subexpression elimination. Nonzero value from | |
2772 | `cse_main' means that jumps were simplified and some code may now | |
2773 | be unreachable, so do jump optimization again. */ | |
2774 | static void | |
2775 | rest_of_handle_cse (tree decl, rtx insns) | |
2776 | { | |
2777 | int tem; | |
2778 | ||
2779 | open_dump_file (DFI_cse, decl); | |
2780 | if (rtl_dump_file) | |
2781 | dump_flow_info (rtl_dump_file); | |
2782 | timevar_push (TV_CSE); | |
2783 | ||
2784 | reg_scan (insns, max_reg_num (), 1); | |
2785 | ||
2786 | tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
2787 | if (tem) | |
2788 | rebuild_jump_labels (insns); | |
2789 | purge_all_dead_edges (0); | |
2790 | ||
2791 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2792 | ||
2793 | /* If we are not running more CSE passes, then we are no longer | |
2794 | expecting CSE to be run. But always rerun it in a cheap mode. */ | |
2795 | cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse; | |
2796 | ||
2797 | if (tem || optimize > 1) | |
2798 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
2799 | /* Try to identify useless null pointer tests and delete them. */ | |
2800 | if (flag_delete_null_pointer_checks) | |
2801 | { | |
fc8dfa20 | 2802 | timevar_push (TV_JUMP); |
ddc9542b AH |
2803 | |
2804 | if (delete_null_pointer_checks (insns)) | |
2805 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
fc8dfa20 | 2806 | timevar_pop (TV_JUMP); |
0fb53e68 | 2807 | } |
ddc9542b AH |
2808 | |
2809 | /* The second pass of jump optimization is likely to have | |
2810 | removed a bunch more instructions. */ | |
2811 | renumber_insns (rtl_dump_file); | |
2812 | ||
2813 | timevar_pop (TV_CSE); | |
2814 | close_dump_file (DFI_cse, print_rtl_with_bb, insns); | |
2815 | } | |
2816 | ||
2817 | /* Run second CSE pass after loop optimizations. */ | |
2818 | static void | |
2819 | rest_of_handle_cse2 (tree decl, rtx insns) | |
2820 | { | |
2821 | int tem; | |
2822 | ||
2823 | timevar_push (TV_CSE2); | |
2824 | open_dump_file (DFI_cse2, decl); | |
2825 | if (rtl_dump_file) | |
2826 | dump_flow_info (rtl_dump_file); | |
2827 | /* CFG is no longer maintained up-to-date. */ | |
2828 | tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file); | |
2829 | purge_all_dead_edges (0); | |
2830 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2831 | ||
2832 | if (tem) | |
5c856b23 | 2833 | { |
ddc9542b AH |
2834 | timevar_push (TV_JUMP); |
2835 | rebuild_jump_labels (insns); | |
5c856b23 | 2836 | cleanup_cfg (CLEANUP_EXPENSIVE); |
ddc9542b | 2837 | timevar_pop (TV_JUMP); |
5c856b23 | 2838 | } |
ddc9542b AH |
2839 | reg_scan (insns, max_reg_num (), 0); |
2840 | close_dump_file (DFI_cse2, print_rtl_with_bb, insns); | |
2841 | ggc_collect (); | |
2842 | timevar_pop (TV_CSE2); | |
2843 | } | |
38c1593d | 2844 | |
ddc9542b AH |
2845 | /* Perform global cse. */ |
2846 | static void | |
2847 | rest_of_handle_gcse (tree decl, rtx insns) | |
2848 | { | |
2849 | int save_csb, save_cfj; | |
2850 | int tem2 = 0, tem; | |
617b465c | 2851 | |
ddc9542b AH |
2852 | timevar_push (TV_GCSE); |
2853 | open_dump_file (DFI_gcse, decl); | |
617b465c | 2854 | |
ddc9542b AH |
2855 | tem = gcse_main (insns, rtl_dump_file); |
2856 | rebuild_jump_labels (insns); | |
2857 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
617b465c | 2858 | |
ddc9542b AH |
2859 | save_csb = flag_cse_skip_blocks; |
2860 | save_cfj = flag_cse_follow_jumps; | |
2861 | flag_cse_skip_blocks = flag_cse_follow_jumps = 0; | |
b17d5d7c | 2862 | |
ddc9542b AH |
2863 | /* Instantiate any remaining CONSTANT_P_RTX nodes. */ |
2864 | if (current_function_calls_constant_p) | |
2865 | purge_builtin_constant_p (); | |
617b465c | 2866 | |
ddc9542b AH |
2867 | /* If -fexpensive-optimizations, re-run CSE to clean up things done |
2868 | by gcse. */ | |
2869 | if (flag_expensive_optimizations) | |
2870 | { | |
2871 | timevar_push (TV_CSE); | |
2872 | reg_scan (insns, max_reg_num (), 1); | |
2873 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
2874 | purge_all_dead_edges (0); | |
617b465c | 2875 | delete_trivially_dead_insns (insns, max_reg_num ()); |
ddc9542b AH |
2876 | timevar_pop (TV_CSE); |
2877 | cse_not_expected = !flag_rerun_cse_after_loop; | |
617b465c ZD |
2878 | } |
2879 | ||
ddc9542b AH |
2880 | /* If gcse or cse altered any jumps, rerun jump optimizations to clean |
2881 | things up. Then possibly re-run CSE again. */ | |
2882 | while (tem || tem2) | |
c2f006ec | 2883 | { |
ddc9542b AH |
2884 | tem = tem2 = 0; |
2885 | timevar_push (TV_JUMP); | |
2886 | rebuild_jump_labels (insns); | |
2887 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
2888 | timevar_pop (TV_JUMP); | |
735a0e33 | 2889 | |
ddc9542b | 2890 | if (flag_expensive_optimizations) |
032713aa | 2891 | { |
ddc9542b AH |
2892 | timevar_push (TV_CSE); |
2893 | reg_scan (insns, max_reg_num (), 1); | |
2894 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
2895 | purge_all_dead_edges (0); | |
2896 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2897 | timevar_pop (TV_CSE); | |
032713aa | 2898 | } |
032713aa | 2899 | } |
735a0e33 | 2900 | |
ddc9542b AH |
2901 | close_dump_file (DFI_gcse, print_rtl_with_bb, insns); |
2902 | timevar_pop (TV_GCSE); | |
4291d9c8 | 2903 | |
ddc9542b AH |
2904 | ggc_collect (); |
2905 | flag_cse_skip_blocks = save_csb; | |
2906 | flag_cse_follow_jumps = save_cfj; | |
38c1593d JH |
2907 | #ifdef ENABLE_CHECKING |
2908 | verify_flow_info (); | |
2909 | #endif | |
ddc9542b AH |
2910 | } |
2911 | ||
2912 | /* Move constant computations out of loops. */ | |
2913 | static void | |
2914 | rest_of_handle_loop_optimize (tree decl, rtx insns) | |
2915 | { | |
2916 | int do_unroll, do_prefetch; | |
2917 | ||
2918 | timevar_push (TV_LOOP); | |
2919 | delete_dead_jumptables (); | |
2920 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); | |
2921 | open_dump_file (DFI_loop, decl); | |
2922 | ||
2923 | /* CFG is no longer maintained up-to-date. */ | |
2924 | free_bb_for_insn (); | |
2925 | ||
2926 | if (flag_unroll_loops) | |
2927 | do_unroll = 0; /* Having two unrollers is useless. */ | |
2928 | else | |
2929 | do_unroll = flag_old_unroll_loops ? LOOP_UNROLL : LOOP_AUTO_UNROLL; | |
2930 | do_prefetch = flag_prefetch_loop_arrays ? LOOP_PREFETCH : 0; | |
2931 | ||
2932 | if (flag_rerun_loop_opt) | |
2933 | { | |
2934 | cleanup_barriers (); | |
2935 | ||
2936 | /* We only want to perform unrolling once. */ | |
2937 | loop_optimize (insns, rtl_dump_file, do_unroll); | |
2938 | do_unroll = 0; | |
2939 | ||
2940 | /* The first call to loop_optimize makes some instructions | |
2941 | trivially dead. We delete those instructions now in the | |
2942 | hope that doing so will make the heuristics in loop work | |
2943 | better and possibly speed up compilation. */ | |
2944 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2945 | ||
2946 | /* The regscan pass is currently necessary as the alias | |
2947 | analysis code depends on this information. */ | |
2948 | reg_scan (insns, max_reg_num (), 1); | |
2949 | } | |
2950 | cleanup_barriers (); | |
2951 | loop_optimize (insns, rtl_dump_file, do_unroll | LOOP_BCT | do_prefetch); | |
2952 | ||
2953 | /* Loop can create trivially dead instructions. */ | |
2954 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2955 | close_dump_file (DFI_loop, print_rtl, insns); | |
2956 | timevar_pop (TV_LOOP); | |
2957 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2958 | ||
2959 | ggc_collect (); | |
2960 | } | |
2961 | ||
e0bb17a8 | 2962 | /* Perform loop optimizations. It might be better to do them a bit |
ddc9542b AH |
2963 | sooner, but we want the profile feedback to work more |
2964 | efficiently. */ | |
2965 | static void | |
2966 | rest_of_handle_loop2 (tree decl, rtx insns) | |
2967 | { | |
2968 | struct loops *loops; | |
2969 | timevar_push (TV_LOOP); | |
2970 | open_dump_file (DFI_loop2, decl); | |
2971 | if (rtl_dump_file) | |
2972 | dump_flow_info (rtl_dump_file); | |
2973 | ||
2974 | loops = loop_optimizer_init (rtl_dump_file); | |
2975 | ||
2976 | if (loops) | |
2977 | { | |
e0bb17a8 | 2978 | /* The optimizations: */ |
ddc9542b AH |
2979 | if (flag_unswitch_loops) |
2980 | unswitch_loops (loops); | |
2981 | ||
2982 | if (flag_peel_loops || flag_unroll_loops) | |
2983 | unroll_and_peel_loops (loops, | |
2984 | (flag_peel_loops ? UAP_PEEL : 0) | | |
2985 | (flag_unroll_loops ? UAP_UNROLL : 0) | | |
2986 | (flag_unroll_all_loops ? UAP_UNROLL_ALL : 0)); | |
2987 | ||
2988 | loop_optimizer_finalize (loops, rtl_dump_file); | |
2989 | } | |
2990 | ||
2991 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2992 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
2993 | reg_scan (insns, max_reg_num (), 0); | |
2994 | if (rtl_dump_file) | |
2995 | dump_flow_info (rtl_dump_file); | |
2996 | close_dump_file (DFI_loop2, print_rtl_with_bb, get_insns ()); | |
2997 | timevar_pop (TV_LOOP); | |
2998 | ggc_collect (); | |
2999 | } | |
3000 | ||
3001 | /* This is called from finish_function (within langhooks.parse_file) | |
3002 | after each top-level definition is parsed. | |
3003 | It is supposed to compile that function or variable | |
3004 | and output the assembler code for it. | |
3005 | After we return, the tree storage is freed. */ | |
3006 | ||
3007 | void | |
e25a75e6 | 3008 | rest_of_compilation (tree decl) |
ddc9542b AH |
3009 | { |
3010 | rtx insns; | |
3011 | int rebuild_label_notes_after_reload; | |
3012 | ||
3013 | timevar_push (TV_REST_OF_COMPILATION); | |
3014 | ||
9ee634e3 JH |
3015 | /* Register rtl specific functions for cfg. */ |
3016 | rtl_register_cfg_hooks (); | |
3017 | ||
ddc9542b AH |
3018 | /* Now that we're out of the frontend, we shouldn't have any more |
3019 | CONCATs anywhere. */ | |
3020 | generating_concat_p = 0; | |
3021 | ||
3022 | /* When processing delayed functions, prepare_function_start() won't | |
3023 | have been run to re-initialize it. */ | |
3024 | cse_not_expected = ! optimize; | |
3025 | ||
3026 | /* First, make sure that NOTE_BLOCK is set correctly for each | |
3027 | NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */ | |
3028 | if (!cfun->x_whole_function_mode_p) | |
3029 | identify_blocks (); | |
3030 | ||
3031 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK | |
3032 | tree in sensible shape. So, we just recalculate it here. */ | |
3033 | if (cfun->x_whole_function_mode_p) | |
3034 | reorder_blocks (); | |
3035 | ||
3036 | init_flow (); | |
3037 | ||
3038 | if (rest_of_handle_inlining (decl)) | |
3039 | goto exit_rest_of_compilation; | |
3040 | ||
3041 | /* If we're emitting a nested function, make sure its parent gets | |
3042 | emitted as well. Doing otherwise confuses debug info. */ | |
3043 | { | |
3044 | tree parent; | |
3045 | for (parent = DECL_CONTEXT (current_function_decl); | |
3046 | parent != NULL_TREE; | |
3047 | parent = get_containing_scope (parent)) | |
3048 | if (TREE_CODE (parent) == FUNCTION_DECL) | |
3049 | TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (parent)) = 1; | |
3050 | } | |
3051 | ||
3052 | /* We are now committed to emitting code for this function. Do any | |
3053 | preparation, such as emitting abstract debug info for the inline | |
3054 | before it gets mangled by optimization. */ | |
3055 | if (DECL_INLINE (decl)) | |
3056 | (*debug_hooks->outlining_inline_function) (decl); | |
3057 | ||
3058 | /* Remove any notes we don't need. That will make iterating | |
3059 | over the instruction sequence faster, and allow the garbage | |
3060 | collector to reclaim the memory used by the notes. */ | |
3061 | remove_unnecessary_notes (); | |
3062 | reorder_blocks (); | |
3063 | ||
3064 | ggc_collect (); | |
3065 | ||
3066 | /* Initialize some variables used by the optimizers. */ | |
3067 | init_function_for_compilation (); | |
3068 | ||
3069 | if (! DECL_DEFER_OUTPUT (decl)) | |
3070 | TREE_ASM_WRITTEN (decl) = 1; | |
3071 | ||
3072 | /* Now that integrate will no longer see our rtl, we need not | |
3073 | distinguish between the return value of this function and the | |
3074 | return value of called functions. Also, we can remove all SETs | |
3075 | of subregs of hard registers; they are only here because of | |
3076 | integrate. Also, we can now initialize pseudos intended to | |
3077 | carry magic hard reg data throughout the function. */ | |
3078 | rtx_equal_function_value_matters = 0; | |
3079 | purge_hard_subreg_sets (get_insns ()); | |
3080 | ||
3081 | /* Early return if there were errors. We can run afoul of our | |
3082 | consistency checks, and there's not really much point in fixing them. | |
3083 | Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */ | |
3084 | if (((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
3085 | || errorcount || sorrycount) | |
3086 | goto exit_rest_of_compilation; | |
3087 | ||
3088 | timevar_push (TV_JUMP); | |
3089 | open_dump_file (DFI_sibling, decl); | |
3090 | insns = get_insns (); | |
3091 | rebuild_jump_labels (insns); | |
3092 | find_exception_handler_labels (); | |
3093 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3094 | ||
3095 | delete_unreachable_blocks (); | |
3096 | ||
3097 | /* We have to issue these warnings now already, because CFG cleanups | |
3098 | further down may destroy the required information. */ | |
3099 | check_function_return_warnings (); | |
3100 | ||
3101 | /* Turn NOTE_INSN_PREDICTIONs into branch predictions. */ | |
3102 | if (flag_guess_branch_prob) | |
3103 | { | |
3104 | timevar_push (TV_BRANCH_PROB); | |
3105 | note_prediction_to_br_prob (); | |
3106 | timevar_pop (TV_BRANCH_PROB); | |
3107 | } | |
3108 | ||
3109 | if (flag_optimize_sibling_calls) | |
3110 | rest_of_handle_sibling_calls (insns); | |
3111 | ||
3112 | timevar_pop (TV_JUMP); | |
3113 | ||
0435312e | 3114 | insn_locators_initialize (); |
ddc9542b AH |
3115 | /* Complete generation of exception handling code. */ |
3116 | if (doing_eh (0)) | |
3117 | { | |
3118 | timevar_push (TV_JUMP); | |
3119 | open_dump_file (DFI_eh, decl); | |
3120 | ||
3121 | finish_eh_generation (); | |
3122 | ||
3123 | close_dump_file (DFI_eh, print_rtl, get_insns ()); | |
3124 | timevar_pop (TV_JUMP); | |
3125 | } | |
3126 | ||
3127 | /* Delay emitting hard_reg_initial_value sets until after EH landing pad | |
3128 | generation, which might create new sets. */ | |
3129 | emit_initial_value_sets (); | |
3130 | ||
3131 | #ifdef FINALIZE_PIC | |
3132 | /* If we are doing position-independent code generation, now | |
3133 | is the time to output special prologues and epilogues. | |
3134 | We do not want to do this earlier, because it just clutters | |
3135 | up inline functions with meaningless insns. */ | |
3136 | if (flag_pic) | |
3137 | FINALIZE_PIC; | |
3138 | #endif | |
3139 | ||
3140 | insns = get_insns (); | |
3141 | ||
3142 | /* Copy any shared structure that should not be shared. */ | |
3143 | unshare_all_rtl (current_function_decl, insns); | |
3144 | ||
3145 | #ifdef SETJMP_VIA_SAVE_AREA | |
3146 | /* This must be performed before virtual register instantiation. | |
3147 | Please be aware the everything in the compiler that can look | |
3148 | at the RTL up to this point must understand that REG_SAVE_AREA | |
3149 | is just like a use of the REG contained inside. */ | |
3150 | if (current_function_calls_alloca) | |
3151 | optimize_save_area_alloca (insns); | |
3152 | #endif | |
3153 | ||
3154 | /* Instantiate all virtual registers. */ | |
3155 | instantiate_virtual_regs (current_function_decl, insns); | |
3156 | ||
3157 | open_dump_file (DFI_jump, decl); | |
3158 | ||
3159 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields | |
3160 | are initialized and to compute whether control can drop off the end | |
3161 | of the function. */ | |
3162 | ||
3163 | timevar_push (TV_JUMP); | |
3164 | /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this | |
3165 | before jump optimization switches branch directions. */ | |
3166 | if (flag_guess_branch_prob) | |
3167 | expected_value_to_br_prob (); | |
3168 | ||
3169 | reg_scan (insns, max_reg_num (), 0); | |
3170 | rebuild_jump_labels (insns); | |
3171 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3172 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
3173 | if (rtl_dump_file) | |
3174 | dump_flow_info (rtl_dump_file); | |
3175 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP | |
3176 | | (flag_thread_jumps ? CLEANUP_THREADING : 0)); | |
5ece9746 | 3177 | |
ddc9542b | 3178 | if (optimize) |
d29c259b | 3179 | { |
ddc9542b AH |
3180 | free_bb_for_insn (); |
3181 | copy_loop_headers (insns); | |
3182 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
4291d9c8 | 3183 | } |
ddc9542b AH |
3184 | purge_line_number_notes (insns); |
3185 | ||
3186 | timevar_pop (TV_JUMP); | |
3187 | close_dump_file (DFI_jump, print_rtl, insns); | |
3188 | ||
3189 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ | |
3190 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) | |
3191 | goto exit_rest_of_compilation; | |
3192 | ||
3193 | /* Long term, this should probably move before the jump optimizer too, | |
3194 | but I didn't want to disturb the rtl_dump_and_exit and related | |
3195 | stuff at this time. */ | |
3196 | if (optimize > 0 && flag_ssa) | |
3197 | insns = rest_of_handle_ssa (decl, insns); | |
3198 | ||
3199 | timevar_push (TV_JUMP); | |
4291d9c8 | 3200 | |
0626ef8a | 3201 | if (optimize) |
ddc9542b | 3202 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
0626ef8a | 3203 | |
ddc9542b AH |
3204 | if (flag_delete_null_pointer_checks) |
3205 | rest_of_handle_null_pointer (decl, insns); | |
6ff76c36 | 3206 | |
ddc9542b AH |
3207 | /* Jump optimization, and the removal of NULL pointer checks, may |
3208 | have reduced the number of instructions substantially. CSE, and | |
3209 | future passes, allocate arrays whose dimensions involve the | |
3210 | maximum instruction UID, so if we can reduce the maximum UID | |
3211 | we'll save big on memory. */ | |
3212 | renumber_insns (rtl_dump_file); | |
3213 | timevar_pop (TV_JUMP); | |
3214 | ||
3215 | close_dump_file (DFI_jump, print_rtl_with_bb, insns); | |
735a0e33 | 3216 | |
1f8f4a0b | 3217 | ggc_collect (); |
a3770a81 | 3218 | |
ddc9542b AH |
3219 | if (optimize > 0) |
3220 | rest_of_handle_cse (decl, insns); | |
3221 | ||
f129791c | 3222 | rest_of_handle_addressof (decl, insns); |
ddc9542b AH |
3223 | |
3224 | ggc_collect (); | |
4291d9c8 RS |
3225 | |
3226 | if (optimize > 0) | |
032713aa | 3227 | { |
ddc9542b AH |
3228 | if (flag_gcse) |
3229 | rest_of_handle_gcse (decl, insns); | |
44a76fc8 | 3230 | |
ddc9542b AH |
3231 | if (flag_loop_optimize) |
3232 | rest_of_handle_loop_optimize (decl, insns); | |
61098249 | 3233 | |
ddc9542b AH |
3234 | if (flag_gcse) |
3235 | rest_of_handle_jump_bypass (decl, insns); | |
3236 | } | |
854a97f0 | 3237 | |
ddc9542b | 3238 | timevar_push (TV_FLOW); |
9ec6d7ab | 3239 | |
ddc9542b | 3240 | rest_of_handle_cfg (decl, insns); |
735a0e33 | 3241 | |
ddc9542b AH |
3242 | if (optimize > 0 |
3243 | || profile_arc_flag || flag_test_coverage || flag_branch_probabilities) | |
3244 | rest_of_handle_branch_prob (decl, insns); | |
a3770a81 | 3245 | |
ddc9542b AH |
3246 | if (optimize > 0) |
3247 | rest_of_handle_if_conversion (decl, insns); | |
8c660648 | 3248 | |
ddc9542b AH |
3249 | if (flag_tracer) |
3250 | rest_of_handle_tracer (decl, insns); | |
9ec6d7ab | 3251 | |
ddc9542b AH |
3252 | if (optimize > 0 |
3253 | && (flag_unswitch_loops | |
3254 | || flag_peel_loops | |
3255 | || flag_unroll_loops)) | |
3256 | rest_of_handle_loop2 (decl, insns); | |
9ec6d7ab | 3257 | |
ddc9542b AH |
3258 | if (flag_rerun_cse_after_loop) |
3259 | rest_of_handle_cse2 (decl, insns); | |
9ec6d7ab | 3260 | |
ddc9542b | 3261 | cse_not_expected = 1; |
735a0e33 | 3262 | |
ddc9542b | 3263 | rest_of_handle_life (decl, insns); |
735a0e33 | 3264 | |
ddc9542b AH |
3265 | if (optimize > 0) |
3266 | rest_of_handle_combine (decl, insns); | |
a3770a81 | 3267 | |
ddc9542b AH |
3268 | if (flag_if_conversion) |
3269 | rest_of_handle_if_after_combine (decl, insns); | |
3270 | ||
3271 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) | |
3272 | rest_of_handle_regmove (decl, insns); | |
8c660648 | 3273 | |
22fb740d JH |
3274 | /* Do unconditional splitting before register allocation to allow machine |
3275 | description to add extra information not needed previously. */ | |
3276 | split_all_insns (1); | |
3277 | ||
97d36f45 | 3278 | #ifdef OPTIMIZE_MODE_SWITCHING |
b932f770 | 3279 | timevar_push (TV_MODE_SWITCH); |
97d36f45 | 3280 | |
22fb740d | 3281 | no_new_pseudos = 0; |
38c1593d | 3282 | optimize_mode_switching (NULL); |
22fb740d | 3283 | no_new_pseudos = 1; |
bd675859 | 3284 | |
b932f770 | 3285 | timevar_pop (TV_MODE_SWITCH); |
97d36f45 | 3286 | #endif |
9f09b1f2 | 3287 | |
2382b79f RS |
3288 | /* Any of the several passes since flow1 will have munged register |
3289 | lifetime data a bit. We need it to be up to date for scheduling | |
3290 | (see handling of reg_known_equiv in init_alias_analysis). */ | |
3291 | recompute_reg_usage (insns, !optimize_size); | |
3292 | ||
a2f8629a | 3293 | #ifdef INSN_SCHEDULING |
ddc9542b | 3294 | rest_of_handle_sched (decl, insns); |
a2f8629a | 3295 | #endif |
4291d9c8 | 3296 | |
54ff41b7 JW |
3297 | /* Determine if the current function is a leaf before running reload |
3298 | since this can impact optimizations done by the prologue and | |
3299 | epilogue thus changing register elimination offsets. */ | |
3300 | current_function_is_leaf = leaf_function_p (); | |
3301 | ||
2a9a326b | 3302 | timevar_push (TV_LOCAL_ALLOC); |
61098249 | 3303 | open_dump_file (DFI_lreg, decl); |
246fd41f | 3304 | |
ed8d2920 MM |
3305 | if (flag_new_regalloc) |
3306 | { | |
ddc9542b AH |
3307 | if (rest_of_handle_new_regalloc (decl, insns, |
3308 | &rebuild_label_notes_after_reload)) | |
3309 | goto exit_rest_of_compilation; | |
032713aa | 3310 | } |
ed8d2920 MM |
3311 | else |
3312 | { | |
ddc9542b AH |
3313 | if (rest_of_handle_old_regalloc (decl, insns, |
3314 | &rebuild_label_notes_after_reload)) | |
ed8d2920 MM |
3315 | goto exit_rest_of_compilation; |
3316 | } | |
ab40ad2b | 3317 | |
1f8f4a0b | 3318 | ggc_collect (); |
a3770a81 | 3319 | |
8bb16620 BS |
3320 | open_dump_file (DFI_postreload, decl); |
3321 | ||
c8ed219d RK |
3322 | /* Do a very simple CSE pass over just the hard registers. */ |
3323 | if (optimize > 0) | |
2a9a326b AS |
3324 | { |
3325 | timevar_push (TV_RELOAD_CSE_REGS); | |
3326 | reload_cse_regs (insns); | |
854a97f0 | 3327 | timevar_pop (TV_RELOAD_CSE_REGS); |
2a9a326b | 3328 | } |
c8ed219d | 3329 | |
0edaaa41 HB |
3330 | /* Register allocation and reloading may have turned an indirect jump into |
3331 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3332 | jumping instructions. */ | |
3333 | if (rebuild_label_notes_after_reload) | |
2a9a326b AS |
3334 | { |
3335 | timevar_push (TV_JUMP); | |
3336 | ||
3337 | rebuild_jump_labels (insns); | |
44d3eb5b | 3338 | purge_all_dead_edges (0); |
2a9a326b AS |
3339 | |
3340 | timevar_pop (TV_JUMP); | |
3341 | } | |
0edaaa41 | 3342 | |
8bb16620 | 3343 | close_dump_file (DFI_postreload, print_rtl_with_bb, insns); |
e881bb1b | 3344 | |
6764d250 | 3345 | /* Re-create the death notes which were deleted during reload. */ |
2a9a326b | 3346 | timevar_push (TV_FLOW2); |
61098249 | 3347 | open_dump_file (DFI_flow2, decl); |
2a9a326b | 3348 | |
6f862f2f JH |
3349 | #ifdef ENABLE_CHECKING |
3350 | verify_flow_info (); | |
3351 | #endif | |
0005550b JH |
3352 | |
3353 | /* If optimizing, then go ahead and split insns now. */ | |
10a3fdd9 | 3354 | #ifndef STACK_REGS |
0005550b | 3355 | if (optimize > 0) |
10a3fdd9 | 3356 | #endif |
0005550b JH |
3357 | split_all_insns (0); |
3358 | ||
fe3ad572 SC |
3359 | if (flag_branch_target_load_optimize) |
3360 | { | |
3361 | open_dump_file (DFI_branch_target_load, decl); | |
3362 | ||
3363 | branch_target_load_optimize (insns, false); | |
3364 | ||
3365 | close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns); | |
3366 | ||
3367 | ggc_collect (); | |
3368 | } | |
3369 | ||
f7da1e9a JH |
3370 | if (optimize) |
3371 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
19d3c25c RH |
3372 | |
3373 | /* On some machines, the prologue and epilogue code, or parts thereof, | |
3374 | can be represented as RTL. Doing so lets us schedule insns between | |
3375 | it and the rest of the code and also allows delayed branch | |
3376 | scheduling to operate in the epilogue. */ | |
3377 | thread_prologue_and_epilogue_insns (insns); | |
fe3ad572 | 3378 | epilogue_completed = 1; |
19d3c25c | 3379 | |
6764d250 | 3380 | if (optimize) |
e881bb1b | 3381 | { |
2a9a326b | 3382 | life_analysis (insns, rtl_dump_file, PROP_FINAL); |
96327cdc JH |
3383 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_UPDATE_LIFE |
3384 | | (flag_crossjumping ? CLEANUP_CROSSJUMP : 0)); | |
1e7f0a48 | 3385 | |
5fa41e13 | 3386 | /* This is kind of a heuristic. We need to run combine_stack_adjustments |
f73ad30e JH |
3387 | even for machines with possibly nonzero RETURN_POPS_ARGS |
3388 | and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having | |
3389 | push instructions will have popping returns. */ | |
3390 | #ifndef PUSH_ROUNDING | |
3391 | if (!ACCUMULATE_OUTGOING_ARGS) | |
1e7f0a48 | 3392 | #endif |
2a9a326b | 3393 | combine_stack_adjustments (); |
1e7f0a48 | 3394 | |
1f8f4a0b | 3395 | ggc_collect (); |
e881bb1b | 3396 | } |
6764d250 | 3397 | |
56744d1a JL |
3398 | flow2_completed = 1; |
3399 | ||
61098249 | 3400 | close_dump_file (DFI_flow2, print_rtl_with_bb, insns); |
2a9a326b | 3401 | timevar_pop (TV_FLOW2); |
e881bb1b | 3402 | |
ede7cd44 RH |
3403 | #ifdef HAVE_peephole2 |
3404 | if (optimize > 0 && flag_peephole2) | |
3405 | { | |
2a9a326b | 3406 | timevar_push (TV_PEEPHOLE2); |
2a9a326b | 3407 | open_dump_file (DFI_peephole2, decl); |
9ec6d7ab | 3408 | |
2a9a326b | 3409 | peephole2_optimize (rtl_dump_file); |
ede7cd44 | 3410 | |
61098249 | 3411 | close_dump_file (DFI_peephole2, print_rtl_with_bb, insns); |
2a9a326b | 3412 | timevar_pop (TV_PEEPHOLE2); |
ede7cd44 RH |
3413 | } |
3414 | #endif | |
3415 | ||
b9422b69 JH |
3416 | if (optimize > 0) |
3417 | { | |
ddc9542b AH |
3418 | if (flag_rename_registers || flag_cprop_registers) |
3419 | rest_of_handle_regrename (decl, insns); | |
b9422b69 | 3420 | |
ddc9542b | 3421 | rest_of_handle_reorder_blocks (decl, insns); |
b9422b69 JH |
3422 | } |
3423 | ||
fa1a0d02 JH |
3424 | if (flag_if_conversion2) |
3425 | { | |
3426 | timevar_push (TV_IFCVT2); | |
3427 | open_dump_file (DFI_ce3, decl); | |
3428 | ||
3429 | if_convert (1); | |
3430 | ||
3431 | close_dump_file (DFI_ce3, print_rtl_with_bb, insns); | |
3432 | timevar_pop (TV_IFCVT2); | |
3433 | } | |
fa1a0d02 | 3434 | |
fe3ad572 SC |
3435 | if (flag_branch_target_load_optimize2) |
3436 | { | |
3437 | /* Leave this a warning for now so that it is possible to experiment | |
3438 | with running this pass twice. In 3.6, we should either make this | |
3439 | an error, or use separate dump files. */ | |
3440 | if (flag_branch_target_load_optimize) | |
3441 | warning ("branch target register load optimization is not intended " | |
3442 | "to be run twice"); | |
3443 | ||
3444 | open_dump_file (DFI_branch_target_load, decl); | |
3445 | ||
3446 | branch_target_load_optimize (insns, true); | |
3447 | ||
3448 | close_dump_file (DFI_branch_target_load, print_rtl_with_bb, insns); | |
3449 | ||
3450 | ggc_collect (); | |
3451 | } | |
3452 | ||
375e2d5c | 3453 | #ifdef INSN_SCHEDULING |
4291d9c8 | 3454 | if (optimize > 0 && flag_schedule_insns_after_reload) |
ddc9542b | 3455 | rest_of_handle_sched2 (decl, insns); |
375e2d5c | 3456 | #endif |
4291d9c8 RS |
3457 | |
3458 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3459 | current_function_uses_only_leaf_regs |
3460 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3461 | #endif |
3462 | ||
1e5fd094 | 3463 | #ifdef STACK_REGS |
ddc9542b | 3464 | rest_of_handle_stack_regs (decl, insns); |
1e5fd094 | 3465 | #endif |
ddc9542b | 3466 | |
247a370b | 3467 | compute_alignments (); |
11bdd2ae | 3468 | |
f5143c46 | 3469 | /* CFG is no longer maintained up-to-date. */ |
3c030e88 JH |
3470 | free_bb_for_insn (); |
3471 | ||
18dbd950 | 3472 | if (targetm.machine_dependent_reorg != 0) |
ddc9542b | 3473 | rest_of_handle_machine_reorg (decl, insns); |
2c65021a | 3474 | |
0045d504 | 3475 | purge_line_number_notes (insns); |
01f62f01 | 3476 | cleanup_barriers (); |
0045d504 | 3477 | |
4291d9c8 RS |
3478 | #ifdef DELAY_SLOTS |
3479 | if (optimize > 0 && flag_delayed_branch) | |
ddc9542b | 3480 | rest_of_handle_delay_slots (decl, insns); |
4291d9c8 RS |
3481 | #endif |
3482 | ||
1e5fd094 | 3483 | #if defined (HAVE_ATTR_length) && !defined (STACK_REGS) |
d7e5d7fe | 3484 | timevar_push (TV_SHORTEN_BRANCH); |
6f862f2f | 3485 | split_all_insns_noflow (); |
2a9a326b | 3486 | timevar_pop (TV_SHORTEN_BRANCH); |
932f0847 | 3487 | #endif |
52a11cbf RH |
3488 | |
3489 | convert_to_eh_region_ranges (); | |
932f0847 JH |
3490 | |
3491 | /* Shorten branches. */ | |
3492 | timevar_push (TV_SHORTEN_BRANCH); | |
3493 | shorten_branches (get_insns ()); | |
3494 | timevar_pop (TV_SHORTEN_BRANCH); | |
4291d9c8 | 3495 | |
b6128b8c | 3496 | set_nothrow_function_flags (); |
12a22e76 JM |
3497 | if (current_function_nothrow) |
3498 | /* Now we know that this can't throw; set the flag for the benefit | |
3499 | of other functions later in this translation unit. */ | |
3500 | TREE_NOTHROW (current_function_decl) = 1; | |
fb13d4d0 | 3501 | |
ddc9542b | 3502 | rest_of_handle_final (decl, insns); |
a3770a81 | 3503 | |
854a97f0 | 3504 | /* Write DBX symbols if requested. */ |
4291d9c8 RS |
3505 | |
3506 | /* Note that for those inline functions where we don't initially | |
3507 | know for certain that we will be generating an out-of-line copy, | |
3508 | the first invocation of this routine (rest_of_compilation) will | |
3509 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
2bb74773 DJ |
3510 | Later on, wrapup_global_declarations will (indirectly) call |
3511 | rest_of_compilation again for those inline functions that need | |
3512 | to have out-of-line copies generated. During that call, we | |
3513 | *will* be routed past here. */ | |
4291d9c8 | 3514 | |
2a9a326b | 3515 | timevar_push (TV_SYMOUT); |
2b85879e | 3516 | (*debug_hooks->function_decl) (decl); |
2a9a326b | 3517 | timevar_pop (TV_SYMOUT); |
9a666dda | 3518 | |
4291d9c8 RS |
3519 | exit_rest_of_compilation: |
3520 | ||
ca29da43 | 3521 | coverage_end_function (); |
e25a75e6 | 3522 | |
f246a305 RS |
3523 | /* In case the function was not output, |
3524 | don't leave any temporary anonymous types | |
3525 | queued up for sdb output. */ | |
3526 | #ifdef SDB_DEBUGGING_INFO | |
3527 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3528 | sdbout_types (NULL_TREE); |
f246a305 RS |
3529 | #endif |
3530 | ||
4291d9c8 | 3531 | reload_completed = 0; |
fe3ad572 | 3532 | epilogue_completed = 0; |
56744d1a | 3533 | flow2_completed = 0; |
f1db3576 | 3534 | no_new_pseudos = 0; |
4291d9c8 | 3535 | |
2a9a326b | 3536 | timevar_push (TV_FINAL); |
4291d9c8 | 3537 | |
2a9a326b AS |
3538 | /* Clear out the insn_length contents now that they are no |
3539 | longer valid. */ | |
3540 | init_insn_lengths (); | |
3541 | ||
2a9a326b AS |
3542 | /* Show no temporary slots allocated. */ |
3543 | init_temp_slots (); | |
adcd38c9 | 3544 | |
2a9a326b | 3545 | free_basic_block_vars (0); |
5652450c | 3546 | free_bb_for_insn (); |
fa51b01b | 3547 | |
2a9a326b | 3548 | timevar_pop (TV_FINAL); |
adcd38c9 | 3549 | |
b255a036 JH |
3550 | if ((*targetm.binds_local_p) (current_function_decl)) |
3551 | { | |
3552 | int pref = cfun->preferred_stack_boundary; | |
3553 | if (cfun->recursive_call_emit | |
3554 | && cfun->stack_alignment_needed > cfun->preferred_stack_boundary) | |
3555 | pref = cfun->stack_alignment_needed; | |
3556 | cgraph_rtl_info (current_function_decl)->preferred_incoming_stack_boundary | |
3557 | = pref; | |
3558 | } | |
3559 | ||
c8d86b9a JW |
3560 | /* Make sure volatile mem refs aren't considered valid operands for |
3561 | arithmetic insns. We must call this here if this is a nested inline | |
3562 | function, since the above code leaves us in the init_recog state | |
3563 | (from final.c), and the function context push/pop code does not | |
3564 | save/restore volatile_ok. | |
3565 | ||
3566 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3567 | anymore if we do it here? */ | |
3568 | ||
3569 | init_recog_no_volatile (); | |
3570 | ||
21cd906e | 3571 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3572 | free_after_parsing (cfun); |
fa51b01b | 3573 | if (! DECL_DEFER_OUTPUT (decl)) |
ae6f2a1c ZW |
3574 | { |
3575 | free_after_compilation (cfun); | |
3576 | ||
3577 | /* Clear integrate.c's pointer to the cfun structure we just | |
3578 | destroyed. */ | |
3579 | DECL_SAVED_INSNS (decl) = 0; | |
3580 | } | |
01d939e8 | 3581 | cfun = 0; |
a3770a81 | 3582 | |
1f8f4a0b | 3583 | ggc_collect (); |
a3770a81 | 3584 | |
2a9a326b | 3585 | timevar_pop (TV_REST_OF_COMPILATION); |
4291d9c8 | 3586 | } |
ddc9542b AH |
3587 | |
3588 | /* Display help for generic options. */ | |
d185d268 | 3589 | void |
e25a75e6 | 3590 | display_help (void) |
b8468bc7 | 3591 | { |
854a97f0 | 3592 | unsigned long i; |
854a97f0 | 3593 | |
b6a1cbae | 3594 | for (i = ARRAY_SIZE (debug_args); i--;) |
b8468bc7 NC |
3595 | { |
3596 | if (debug_args[i].description != NULL) | |
854a97f0 | 3597 | printf (" -g%-21s %s\n", |
a6371940 | 3598 | debug_args[i].arg, _(debug_args[i].description)); |
b8468bc7 | 3599 | } |
854a97f0 | 3600 | |
10501d8f CC |
3601 | display_target_options (); |
3602 | } | |
3603 | ||
ddc9542b | 3604 | /* Display help for target options. */ |
d185d268 | 3605 | void |
e25a75e6 | 3606 | display_target_options (void) |
10501d8f | 3607 | { |
a01da83b | 3608 | int undoc, i; |
76306300 NB |
3609 | static bool displayed = false; |
3610 | ||
3611 | /* Avoid double printing for --help --target-help. */ | |
3612 | if (displayed) | |
3613 | return; | |
d185d268 | 3614 | |
76306300 | 3615 | displayed = true; |
10501d8f | 3616 | |
b6a1cbae | 3617 | if (ARRAY_SIZE (target_switches) > 1 |
b8468bc7 | 3618 | #ifdef TARGET_OPTIONS |
b6a1cbae | 3619 | || ARRAY_SIZE (target_options) > 1 |
b8468bc7 NC |
3620 | #endif |
3621 | ) | |
3622 | { | |
3623 | int doc = 0; | |
854a97f0 | 3624 | |
b8468bc7 | 3625 | undoc = 0; |
854a97f0 | 3626 | |
5e4adfba | 3627 | printf (_("\nTarget specific options:\n")); |
b8468bc7 | 3628 | |
b6a1cbae | 3629 | for (i = ARRAY_SIZE (target_switches); i--;) |
b8468bc7 | 3630 | { |
854a97f0 KH |
3631 | const char *option = target_switches[i].name; |
3632 | const char *description = target_switches[i].description; | |
b8468bc7 | 3633 | |
854a97f0 | 3634 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3635 | continue; |
3636 | else if (description == NULL) | |
844642e6 NC |
3637 | { |
3638 | undoc = 1; | |
854a97f0 | 3639 | |
844642e6 | 3640 | if (extra_warnings) |
7eaab492 | 3641 | printf (_(" -m%-23s [undocumented]\n"), option); |
844642e6 | 3642 | } |
9cabb1d8 | 3643 | else if (*description != 0) |
7eaab492 | 3644 | doc += printf (" -m%-23s %s\n", option, _(description)); |
b8468bc7 | 3645 | } |
854a97f0 KH |
3646 | |
3647 | #ifdef TARGET_OPTIONS | |
b6a1cbae | 3648 | for (i = ARRAY_SIZE (target_options); i--;) |
b8468bc7 | 3649 | { |
854a97f0 KH |
3650 | const char *option = target_options[i].prefix; |
3651 | const char *description = target_options[i].description; | |
b8468bc7 | 3652 | |
854a97f0 | 3653 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3654 | continue; |
3655 | else if (description == NULL) | |
844642e6 NC |
3656 | { |
3657 | undoc = 1; | |
854a97f0 | 3658 | |
844642e6 | 3659 | if (extra_warnings) |
7eaab492 | 3660 | printf (_(" -m%-23s [undocumented]\n"), option); |
844642e6 | 3661 | } |
9cabb1d8 | 3662 | else if (*description != 0) |
7eaab492 | 3663 | doc += printf (" -m%-23s %s\n", option, _(description)); |
b8468bc7 NC |
3664 | } |
3665 | #endif | |
3666 | if (undoc) | |
ff59bfe6 JM |
3667 | { |
3668 | if (doc) | |
5e4adfba | 3669 | printf (_("\nThere are undocumented target specific options as well.\n")); |
ff59bfe6 | 3670 | else |
5e4adfba | 3671 | printf (_(" They exist, but they are not documented.\n")); |
ff59bfe6 | 3672 | } |
b8468bc7 NC |
3673 | } |
3674 | } | |
ddc9542b | 3675 | |
f63d1bf7 | 3676 | /* Parse a -d... command line switch. */ |
39dd8003 | 3677 | |
d185d268 | 3678 | void |
e25a75e6 | 3679 | decode_d_option (const char *arg) |
39dd8003 | 3680 | { |
61098249 RH |
3681 | int i, c, matched; |
3682 | ||
3683 | while (*arg) | |
3684 | switch (c = *arg++) | |
39dd8003 NC |
3685 | { |
3686 | case 'a': | |
dbbbbf3b | 3687 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 | 3688 | dump_file[i].enabled = 1; |
39dd8003 NC |
3689 | break; |
3690 | case 'A': | |
3691 | flag_debug_asm = 1; | |
3692 | break; | |
39dd8003 NC |
3693 | case 'p': |
3694 | flag_print_asm_name = 1; | |
3695 | break; | |
c349e40b | 3696 | case 'P': |
9cabb1d8 KH |
3697 | flag_dump_rtl_in_asm = 1; |
3698 | flag_print_asm_name = 1; | |
3699 | break; | |
39dd8003 NC |
3700 | case 'v': |
3701 | graph_dump_format = vcg; | |
3702 | break; | |
39dd8003 NC |
3703 | case 'x': |
3704 | rtl_dump_and_exit = 1; | |
3705 | break; | |
3706 | case 'y': | |
ff45c01e | 3707 | set_yydebug = 1; |
39dd8003 | 3708 | break; |
39dd8003 NC |
3709 | case 'D': /* These are handled by the preprocessor. */ |
3710 | case 'I': | |
3711 | break; | |
886e0865 GK |
3712 | case 'H': |
3713 | setup_core_dumping(); | |
3714 | break; | |
61098249 | 3715 | |
39dd8003 | 3716 | default: |
61098249 | 3717 | matched = 0; |
dbbbbf3b | 3718 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 RH |
3719 | if (c == dump_file[i].debug_switch) |
3720 | { | |
3721 | dump_file[i].enabled = 1; | |
3722 | matched = 1; | |
3723 | } | |
3724 | ||
3725 | if (! matched) | |
3726 | warning ("unrecognized gcc debugging option: %c", c); | |
39dd8003 NC |
3727 | break; |
3728 | } | |
3729 | } | |
b8468bc7 | 3730 | |
df026186 GK |
3731 | /* Indexed by enum debug_info_type. */ |
3732 | const char *const debug_type_names[] = | |
3733 | { | |
3734 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff", "vms" | |
3735 | }; | |
3736 | ||
f63d1bf7 | 3737 | /* Parse a -g... command line switch. ARG is the value after the -g. |
39dd8003 NC |
3738 | It is safe to access 'ARG - 2' to generate the full switch name. |
3739 | Return the number of strings consumed. */ | |
14a774a9 | 3740 | |
e01cc6dc | 3741 | void |
e25a75e6 | 3742 | decode_g_option (const char *arg) |
39dd8003 | 3743 | { |
9cabb1d8 | 3744 | static unsigned level = 0; |
39dd8003 NC |
3745 | /* A lot of code assumes write_symbols == NO_DEBUG if the |
3746 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
3747 | of what debugging type has been selected). This records the | |
3748 | selected type. It is an error to specify more than one | |
3749 | debugging type. */ | |
3750 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
272d0bee | 3751 | /* Nonzero if debugging format has been explicitly set. |
39dd8003 NC |
3752 | -g and -ggdb don't explicitly set the debugging format so |
3753 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
3754 | static int type_explicitly_set_p = 0; | |
854a97f0 | 3755 | |
39dd8003 NC |
3756 | /* The maximum admissible debug level value. */ |
3757 | static const unsigned max_debug_level = 3; | |
854a97f0 | 3758 | |
39dd8003 NC |
3759 | /* Look up ARG in the table. */ |
3760 | for (da = debug_args; da->arg; da++) | |
3761 | { | |
3762 | const int da_len = strlen (da->arg); | |
3763 | ||
3764 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
3765 | { | |
3766 | enum debug_info_type type = da->debug_type; | |
854a97f0 KH |
3767 | const char *p = arg + da_len; |
3768 | ||
0df6c2c7 | 3769 | if (*p && ! ISDIGIT (*p)) |
39dd8003 | 3770 | continue; |
854a97f0 | 3771 | |
39dd8003 NC |
3772 | /* A debug flag without a level defaults to level 2. |
3773 | Note we do not want to call read_integral_parameter | |
854a97f0 | 3774 | for that case since it will call atoi which |
39dd8003 | 3775 | will return zero. |
854a97f0 KH |
3776 | |
3777 | ??? We may want to generalize the interface to | |
39dd8003 NC |
3778 | read_integral_parameter to better handle this case |
3779 | if this case shows up often. */ | |
3780 | if (*p) | |
3781 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
3782 | else | |
84a5b4f8 | 3783 | level = (level == 0) ? 2 : level; |
854a97f0 | 3784 | |
39dd8003 NC |
3785 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) |
3786 | { | |
3787 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
3788 | level, level); | |
3789 | if (level == 2) | |
3790 | error ("use -gdwarf-2 for DWARF v2"); | |
3791 | } | |
854a97f0 | 3792 | |
39dd8003 NC |
3793 | if (level > max_debug_level) |
3794 | { | |
3795 | warning ("\ | |
3796 | ignoring option `%s' due to invalid debug level specification", | |
3797 | arg - 2); | |
3798 | level = debug_info_level; | |
3799 | } | |
3800 | ||
3801 | if (type == NO_DEBUG) | |
3802 | { | |
3803 | type = PREFERRED_DEBUGGING_TYPE; | |
854a97f0 | 3804 | |
39dd8003 NC |
3805 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) |
3806 | { | |
3fc602a0 | 3807 | #ifdef DWARF2_DEBUGGING_INFO |
39dd8003 NC |
3808 | type = DWARF2_DEBUG; |
3809 | #else | |
3810 | #ifdef DBX_DEBUGGING_INFO | |
3811 | type = DBX_DEBUG; | |
3812 | #endif | |
3813 | #endif | |
3814 | } | |
3815 | } | |
854a97f0 | 3816 | |
39dd8003 | 3817 | if (type == NO_DEBUG) |
14a774a9 | 3818 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
3819 | |
3820 | /* Does it conflict with an already selected type? */ | |
3821 | if (type_explicitly_set_p | |
854a97f0 | 3822 | /* -g/-ggdb don't conflict with anything. */ |
39dd8003 NC |
3823 | && da->debug_type != NO_DEBUG |
3824 | && type != selected_debug_type) | |
3825 | warning ("`%s' ignored, conflicts with `-g%s'", | |
3826 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
3827 | else | |
3828 | { | |
3829 | /* If the format has already been set, -g/-ggdb | |
3830 | only change the debug level. */ | |
3831 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
854a97f0 KH |
3832 | /* Don't change debugging type. */ |
3833 | ; | |
39dd8003 NC |
3834 | else |
3835 | { | |
3836 | selected_debug_type = type; | |
3837 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
3838 | } | |
854a97f0 | 3839 | |
39dd8003 NC |
3840 | write_symbols = (level == 0 |
3841 | ? NO_DEBUG | |
3842 | : selected_debug_type); | |
3843 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
3844 | debug_info_level = (enum debug_info_level) level; | |
3845 | } | |
854a97f0 | 3846 | |
39dd8003 NC |
3847 | break; |
3848 | } | |
3849 | } | |
854a97f0 | 3850 | |
39dd8003 | 3851 | if (! da->arg) |
e01cc6dc | 3852 | warning ("`-g%s': unknown or unsupported -g option", arg); |
39dd8003 NC |
3853 | } |
3854 | ||
f5e99456 NB |
3855 | /* Decode -m switches. */ |
3856 | /* Decode the switch -mNAME. */ | |
7adfcfed | 3857 | |
903caebf | 3858 | void |
e25a75e6 | 3859 | set_target_switch (const char *name) |
4291d9c8 | 3860 | { |
f5e99456 NB |
3861 | size_t j; |
3862 | int valid_target_option = 0; | |
4291d9c8 | 3863 | |
f5e99456 NB |
3864 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
3865 | if (!strcmp (target_switches[j].name, name)) | |
3866 | { | |
3867 | if (target_switches[j].value < 0) | |
3868 | target_flags &= ~-target_switches[j].value; | |
3869 | else | |
3870 | target_flags |= target_switches[j].value; | |
a27fb29b RS |
3871 | if (name[0] != 0) |
3872 | { | |
3873 | if (target_switches[j].value < 0) | |
3874 | target_flags_explicit |= -target_switches[j].value; | |
3875 | else | |
3876 | target_flags_explicit |= target_switches[j].value; | |
3877 | } | |
f5e99456 NB |
3878 | valid_target_option = 1; |
3879 | } | |
4291d9c8 | 3880 | |
f5e99456 NB |
3881 | #ifdef TARGET_OPTIONS |
3882 | if (!valid_target_option) | |
3883 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
3884 | { | |
3885 | int len = strlen (target_options[j].prefix); | |
c409ea0d | 3886 | if (target_options[j].value) |
f5e99456 | 3887 | { |
c409ea0d DD |
3888 | if (!strcmp (target_options[j].prefix, name)) |
3889 | { | |
3890 | *target_options[j].variable = target_options[j].value; | |
3891 | valid_target_option = 1; | |
3892 | } | |
3893 | } | |
3894 | else | |
3895 | { | |
3896 | if (!strncmp (target_options[j].prefix, name, len)) | |
3897 | { | |
3898 | *target_options[j].variable = name + len; | |
3899 | valid_target_option = 1; | |
3900 | } | |
f5e99456 NB |
3901 | } |
3902 | } | |
3903 | #endif | |
4291d9c8 | 3904 | |
f5e99456 | 3905 | if (!valid_target_option) |
1f978f5f | 3906 | error ("invalid option `%s'", name); |
f5e99456 | 3907 | } |
ddc9542b | 3908 | |
f5e99456 NB |
3909 | /* Print version information to FILE. |
3910 | Each line begins with INDENT (for the case where FILE is the | |
3911 | assembler output file). */ | |
3912 | ||
d185d268 | 3913 | void |
e25a75e6 | 3914 | print_version (FILE *file, const char *indent) |
f5e99456 NB |
3915 | { |
3916 | #ifndef __VERSION__ | |
3917 | #define __VERSION__ "[?]" | |
3918 | #endif | |
3919 | fnotice (file, | |
3920 | #ifdef __GNUC__ | |
3921 | "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n" | |
3922 | #else | |
3923 | "%s%s%s version %s (%s) compiled by CC.\n" | |
3924 | #endif | |
3925 | , indent, *indent != 0 ? " " : "", | |
3926 | lang_hooks.name, version_string, TARGET_NAME, | |
3927 | indent, __VERSION__); | |
7a69a172 GB |
3928 | fnotice (file, "%s%sGGC heuristics: --param ggc-min-expand=%d --param ggc-min-heapsize=%d\n", |
3929 | indent, *indent != 0 ? " " : "", | |
3930 | PARAM_VALUE (GGC_MIN_EXPAND), PARAM_VALUE (GGC_MIN_HEAPSIZE)); | |
f5e99456 NB |
3931 | } |
3932 | ||
3933 | /* Print an option value and return the adjusted position in the line. | |
3934 | ??? We don't handle error returns from fprintf (disk full); presumably | |
3935 | other code will catch a disk full though. */ | |
3936 | ||
3937 | static int | |
e25a75e6 AJ |
3938 | print_single_switch (FILE *file, int pos, int max, |
3939 | const char *indent, const char *sep, const char *term, | |
3940 | const char *type, const char *name) | |
f5e99456 NB |
3941 | { |
3942 | /* The ultrix fprintf returns 0 on success, so compute the result we want | |
3943 | here since we need it for the following test. */ | |
3944 | int len = strlen (sep) + strlen (type) + strlen (name); | |
3945 | ||
3946 | if (pos != 0 | |
3947 | && pos + len > max) | |
3948 | { | |
3949 | fprintf (file, "%s", term); | |
3950 | pos = 0; | |
3951 | } | |
3952 | if (pos == 0) | |
3953 | { | |
3954 | fprintf (file, "%s", indent); | |
3955 | pos = strlen (indent); | |
3956 | } | |
3957 | fprintf (file, "%s%s%s", sep, type, name); | |
3958 | pos += len; | |
3959 | return pos; | |
3960 | } | |
3961 | ||
3962 | /* Print active target switches to FILE. | |
3963 | POS is the current cursor position and MAX is the size of a "line". | |
3964 | Each line begins with INDENT and ends with TERM. | |
3965 | Each switch is separated from the next by SEP. */ | |
3966 | ||
3967 | static void | |
e25a75e6 AJ |
3968 | print_switch_values (FILE *file, int pos, int max, |
3969 | const char *indent, const char *sep, const char *term) | |
f5e99456 NB |
3970 | { |
3971 | size_t j; | |
b86f6cd9 | 3972 | const char **p; |
f5e99456 | 3973 | |
a37db56b | 3974 | /* Fill in the -frandom-seed option, if the user didn't pass it, so |
c07e5477 NS |
3975 | that it can be printed below. This helps reproducibility. */ |
3976 | randomize (); | |
a37db56b | 3977 | |
f5e99456 | 3978 | /* Print the options as passed. */ |
f5e99456 NB |
3979 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
3980 | _("options passed: "), ""); | |
3981 | ||
3982 | for (p = &save_argv[1]; *p != NULL; p++) | |
3983 | if (**p == '-') | |
3984 | { | |
3985 | /* Ignore these. */ | |
3986 | if (strcmp (*p, "-o") == 0) | |
3987 | { | |
3988 | if (p[1] != NULL) | |
3989 | p++; | |
3990 | continue; | |
3991 | } | |
3992 | if (strcmp (*p, "-quiet") == 0) | |
3993 | continue; | |
3994 | if (strcmp (*p, "-version") == 0) | |
3995 | continue; | |
3996 | if ((*p)[1] == 'd') | |
3997 | continue; | |
3998 | ||
3999 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
4000 | } | |
4001 | if (pos > 0) | |
4002 | fprintf (file, "%s", term); | |
4003 | ||
4004 | /* Print the -f and -m options that have been enabled. | |
4005 | We don't handle language specific options but printing argv | |
4006 | should suffice. */ | |
4007 | ||
4008 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
4009 | _("options enabled: "), ""); | |
4010 | ||
4011 | for (j = 0; j < ARRAY_SIZE (f_options); j++) | |
4012 | if (*f_options[j].variable == f_options[j].on_value) | |
4013 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4014 | "-f", f_options[j].string); | |
4015 | ||
4016 | /* Print target specific options. */ | |
4017 | ||
4018 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) | |
4019 | if (target_switches[j].name[0] != '\0' | |
4020 | && target_switches[j].value > 0 | |
4021 | && ((target_switches[j].value & target_flags) | |
4022 | == target_switches[j].value)) | |
4023 | { | |
4024 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4025 | "-m", target_switches[j].name); | |
4026 | } | |
4027 | ||
4028 | #ifdef TARGET_OPTIONS | |
4029 | for (j = 0; j < ARRAY_SIZE (target_options); j++) | |
4030 | if (*target_options[j].variable != NULL) | |
4031 | { | |
4032 | char prefix[256]; | |
4033 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
4034 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4035 | prefix, *target_options[j].variable); | |
4036 | } | |
4037 | #endif | |
4038 | ||
4039 | fprintf (file, "%s", term); | |
4040 | } | |
ddc9542b | 4041 | |
f5e99456 NB |
4042 | /* Open assembly code output file. Do this even if -fsyntax-only is |
4043 | on, because then the driver will have provided the name of a | |
4044 | temporary file or bit bucket for us. NAME is the file specified on | |
4045 | the command line, possibly NULL. */ | |
4046 | static void | |
e25a75e6 | 4047 | init_asm_output (const char *name) |
f5e99456 NB |
4048 | { |
4049 | if (name == NULL && asm_file_name == 0) | |
4050 | asm_out_file = stdout; | |
4051 | else | |
4052 | { | |
4053 | if (asm_file_name == 0) | |
9cabb1d8 KH |
4054 | { |
4055 | int len = strlen (dump_base_name); | |
703ad42b | 4056 | char *dumpname = xmalloc (len + 6); |
9cabb1d8 KH |
4057 | memcpy (dumpname, dump_base_name, len + 1); |
4058 | strip_off_ending (dumpname, len); | |
4059 | strcat (dumpname, ".s"); | |
4060 | asm_file_name = dumpname; | |
4061 | } | |
f5e99456 | 4062 | if (!strcmp (asm_file_name, "-")) |
9cabb1d8 | 4063 | asm_out_file = stdout; |
f5e99456 | 4064 | else |
17211ab5 | 4065 | asm_out_file = fopen (asm_file_name, "w+"); |
f5e99456 | 4066 | if (asm_out_file == 0) |
fa6ef813 | 4067 | fatal_error ("can't open %s for writing: %m", asm_file_name); |
f5e99456 NB |
4068 | } |
4069 | ||
4070 | #ifdef IO_BUFFER_SIZE | |
703ad42b | 4071 | setvbuf (asm_out_file, xmalloc (IO_BUFFER_SIZE), |
9cabb1d8 | 4072 | _IOFBF, IO_BUFFER_SIZE); |
f5e99456 NB |
4073 | #endif |
4074 | ||
4075 | if (!flag_syntax_only) | |
4076 | { | |
1bc7c5b6 | 4077 | targetm.asm_out.file_start (); |
f5e99456 NB |
4078 | |
4079 | #ifdef ASM_COMMENT_START | |
4080 | if (flag_verbose_asm) | |
4081 | { | |
4082 | /* Print the list of options in effect. */ | |
4083 | print_version (asm_out_file, ASM_COMMENT_START); | |
4084 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
4085 | ASM_COMMENT_START, " ", "\n"); | |
4086 | /* Add a blank line here so it appears in assembler output but not | |
4087 | screen output. */ | |
4088 | fprintf (asm_out_file, "\n"); | |
4089 | } | |
4090 | #endif | |
4091 | } | |
4092 | } | |
ddc9542b | 4093 | |
f5e99456 NB |
4094 | /* Initialization of the front end environment, before command line |
4095 | options are parsed. Signal handlers, internationalization etc. | |
4096 | ARGV0 is main's argv[0]. */ | |
4097 | static void | |
b86f6cd9 | 4098 | general_init (const char *argv0) |
f5e99456 | 4099 | { |
b86f6cd9 | 4100 | const char *p; |
f5e99456 NB |
4101 | |
4102 | p = argv0 + strlen (argv0); | |
4103 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) | |
4104 | --p; | |
4105 | progname = p; | |
4106 | ||
4107 | xmalloc_set_program_name (progname); | |
e1a132c6 | 4108 | |
5351f1ca NB |
4109 | hex_init (); |
4110 | ||
191bf464 | 4111 | gcc_init_libintl (); |
ab87f8c8 | 4112 | |
a7023245 ZW |
4113 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
4114 | #ifdef SIGSEGV | |
4115 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 4116 | #endif |
a7023245 ZW |
4117 | #ifdef SIGILL |
4118 | signal (SIGILL, crash_signal); | |
4119 | #endif | |
4120 | #ifdef SIGBUS | |
4121 | signal (SIGBUS, crash_signal); | |
4122 | #endif | |
4123 | #ifdef SIGABRT | |
4124 | signal (SIGABRT, crash_signal); | |
4125 | #endif | |
4126 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
4127 | signal (SIGIOT, crash_signal); | |
4128 | #endif | |
15e5ad76 ZW |
4129 | #ifdef SIGFPE |
4130 | signal (SIGFPE, crash_signal); | |
4131 | #endif | |
854a97f0 | 4132 | |
476d9098 GK |
4133 | /* Other host-specific signal setup. */ |
4134 | (*host_hooks.extra_signals)(); | |
4135 | ||
f5e99456 NB |
4136 | /* Initialize the diagnostics reporting machinery, so option parsing |
4137 | can give warnings and errors. */ | |
4138 | diagnostic_initialize (global_dc); | |
c79043f3 NB |
4139 | |
4140 | /* Initialize the garbage-collector, string pools and tree type hash | |
4141 | table. */ | |
4142 | init_ggc (); | |
4143 | init_stringpool (); | |
4144 | init_ttree (); | |
6a08f7b3 | 4145 | |
f5e99456 NB |
4146 | /* Initialize register usage now so switches may override. */ |
4147 | init_reg_sets (); | |
764dbbf2 | 4148 | |
c6d9a88c MM |
4149 | /* Register the language-independent parameters. */ |
4150 | add_params (lang_independent_params, LAST_PARAM); | |
4151 | ||
9ac121af KG |
4152 | /* This must be done after add_params but before argument processing. */ |
4153 | init_ggc_heuristics(); | |
a32274ad | 4154 | } |
ddc9542b | 4155 | |
a32274ad NB |
4156 | /* Process the options that have been parsed. */ |
4157 | static void | |
e25a75e6 | 4158 | process_options (void) |
a32274ad | 4159 | { |
4bfec483 NB |
4160 | /* Allow the front end to perform consistency checks and do further |
4161 | initialization based on the command line options. This hook also | |
4162 | sets the original filename if appropriate (e.g. foo.i -> foo.c) | |
4163 | so we can correctly initialize debug output. */ | |
d7b42618 NB |
4164 | no_backend = (*lang_hooks.post_options) (&main_input_filename); |
4165 | input_filename = main_input_filename; | |
4bfec483 | 4166 | |
4291d9c8 RS |
4167 | #ifdef OVERRIDE_OPTIONS |
4168 | /* Some machines may reject certain combinations of options. */ | |
4169 | OVERRIDE_OPTIONS; | |
4170 | #endif | |
4171 | ||
b1cbe78c NB |
4172 | /* Set aux_base_name if not already set. */ |
4173 | if (aux_base_name) | |
4174 | ; | |
d7b42618 | 4175 | else if (main_input_filename) |
b1cbe78c | 4176 | { |
d7b42618 | 4177 | char *name = xstrdup (lbasename (main_input_filename)); |
e25a75e6 | 4178 | |
b1cbe78c NB |
4179 | strip_off_ending (name, strlen (name)); |
4180 | aux_base_name = name; | |
4181 | } | |
4182 | else | |
4183 | aux_base_name = "gccaux"; | |
4184 | ||
efa3896a GK |
4185 | /* Set up the align_*_log variables, defaulting them to 1 if they |
4186 | were still unset. */ | |
4187 | if (align_loops <= 0) align_loops = 1; | |
2cca7283 JH |
4188 | if (align_loops_max_skip > align_loops || !align_loops) |
4189 | align_loops_max_skip = align_loops - 1; | |
854a97f0 | 4190 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
efa3896a | 4191 | if (align_jumps <= 0) align_jumps = 1; |
2cca7283 JH |
4192 | if (align_jumps_max_skip > align_jumps || !align_jumps) |
4193 | align_jumps_max_skip = align_jumps - 1; | |
854a97f0 | 4194 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
efa3896a | 4195 | if (align_labels <= 0) align_labels = 1; |
854a97f0 | 4196 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
2cca7283 JH |
4197 | if (align_labels_max_skip > align_labels || !align_labels) |
4198 | align_labels_max_skip = align_labels - 1; | |
efa3896a | 4199 | if (align_functions <= 0) align_functions = 1; |
854a97f0 KH |
4200 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
4201 | ||
4291d9c8 RS |
4202 | /* Unrolling all loops implies that standard loop unrolling must also |
4203 | be done. */ | |
4204 | if (flag_unroll_all_loops) | |
4205 | flag_unroll_loops = 1; | |
b17d5d7c ZD |
4206 | |
4207 | if (flag_unroll_loops) | |
4208 | { | |
4209 | flag_old_unroll_loops = 0; | |
4210 | flag_old_unroll_all_loops = 0; | |
4211 | } | |
4212 | ||
4213 | if (flag_old_unroll_all_loops) | |
4214 | flag_old_unroll_loops = 1; | |
4215 | ||
4216 | /* Old loop unrolling requires that strength_reduction be on also. Silently | |
4291d9c8 RS |
4217 | turn on strength reduction here if it isn't already on. Also, the loop |
4218 | unrolling code assumes that cse will be run after loop, so that must | |
4219 | be turned on also. */ | |
b17d5d7c | 4220 | if (flag_old_unroll_loops) |
4291d9c8 RS |
4221 | { |
4222 | flag_strength_reduce = 1; | |
4223 | flag_rerun_cse_after_loop = 1; | |
4224 | } | |
b17d5d7c ZD |
4225 | if (flag_unroll_loops || flag_peel_loops) |
4226 | flag_rerun_cse_after_loop = 1; | |
4291d9c8 | 4227 | |
b932f770 JH |
4228 | if (flag_non_call_exceptions) |
4229 | flag_asynchronous_unwind_tables = 1; | |
4230 | if (flag_asynchronous_unwind_tables) | |
4231 | flag_unwind_tables = 1; | |
4232 | ||
e72fcfe8 JH |
4233 | /* Disable unit-at-a-time mode for frontends not supporting callgraph |
4234 | interface. */ | |
4235 | if (flag_unit_at_a_time && ! lang_hooks.callgraph.expand_function) | |
4236 | flag_unit_at_a_time = 0; | |
4237 | ||
4291d9c8 RS |
4238 | /* Warn about options that are not supported on this machine. */ |
4239 | #ifndef INSN_SCHEDULING | |
4240 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
4241 | warning ("instruction scheduling not supported on this target machine"); | |
4242 | #endif | |
4243 | #ifndef DELAY_SLOTS | |
4244 | if (flag_delayed_branch) | |
4245 | warning ("this target machine does not have delayed branches"); | |
4246 | #endif | |
4247 | ||
19283265 RH |
4248 | user_label_prefix = USER_LABEL_PREFIX; |
4249 | if (flag_leading_underscore != -1) | |
4250 | { | |
854a97f0 | 4251 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
4252 | issue a warning and ignore this option. */ |
4253 | if (user_label_prefix[0] == 0 || | |
4254 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
4255 | { | |
4256 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
4257 | } | |
4258 | else | |
4259 | warning ("-f%sleading-underscore not supported on this target machine", | |
4260 | flag_leading_underscore ? "" : "no-"); | |
4261 | } | |
4262 | ||
4291d9c8 RS |
4263 | /* If we are in verbose mode, write out the version and maybe all the |
4264 | option flags in use. */ | |
4265 | if (version_flag) | |
4266 | { | |
3d5cdd42 | 4267 | print_version (stderr, ""); |
4291d9c8 | 4268 | if (! quiet_flag) |
3d5cdd42 | 4269 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
4270 | } |
4271 | ||
f5e99456 NB |
4272 | if (flag_syntax_only) |
4273 | { | |
4274 | write_symbols = NO_DEBUG; | |
4275 | profile_flag = 0; | |
f5e99456 | 4276 | } |
4291d9c8 | 4277 | |
f5e99456 NB |
4278 | /* Now we know write_symbols, set up the debug hooks based on it. |
4279 | By default we do nothing for debug output. */ | |
4280 | #if defined(DBX_DEBUGGING_INFO) | |
4281 | if (write_symbols == DBX_DEBUG) | |
4282 | debug_hooks = &dbx_debug_hooks; | |
4291d9c8 | 4283 | #endif |
f5e99456 NB |
4284 | #if defined(XCOFF_DEBUGGING_INFO) |
4285 | if (write_symbols == XCOFF_DEBUG) | |
4286 | debug_hooks = &xcoff_debug_hooks; | |
3d5cdd42 | 4287 | #endif |
f5e99456 NB |
4288 | #ifdef SDB_DEBUGGING_INFO |
4289 | if (write_symbols == SDB_DEBUG) | |
4290 | debug_hooks = &sdb_debug_hooks; | |
4291 | #endif | |
4292 | #ifdef DWARF_DEBUGGING_INFO | |
4293 | if (write_symbols == DWARF_DEBUG) | |
4294 | debug_hooks = &dwarf_debug_hooks; | |
4295 | #endif | |
4296 | #ifdef DWARF2_DEBUGGING_INFO | |
4297 | if (write_symbols == DWARF2_DEBUG) | |
4298 | debug_hooks = &dwarf2_debug_hooks; | |
3d5cdd42 | 4299 | #endif |
7a0c8d71 DR |
4300 | #ifdef VMS_DEBUGGING_INFO |
4301 | if (write_symbols == VMS_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG) | |
4302 | debug_hooks = &vmsdbg_debug_hooks; | |
4303 | #endif | |
4291d9c8 | 4304 | |
f5e99456 NB |
4305 | /* If auxiliary info generation is desired, open the output file. |
4306 | This goes in the same directory as the source file--unlike | |
4307 | all the other output files. */ | |
4308 | if (flag_gen_aux_info) | |
4309 | { | |
4310 | aux_info_file = fopen (aux_info_file_name, "w"); | |
4311 | if (aux_info_file == 0) | |
fa6ef813 | 4312 | fatal_error ("can't open %s: %m", aux_info_file_name); |
f5e99456 | 4313 | } |
309a8875 | 4314 | |
f5e99456 | 4315 | if (! targetm.have_named_sections) |
4291d9c8 | 4316 | { |
f5e99456 NB |
4317 | if (flag_function_sections) |
4318 | { | |
4d6baafa | 4319 | warning ("-ffunction-sections not supported for this target"); |
f5e99456 NB |
4320 | flag_function_sections = 0; |
4321 | } | |
4322 | if (flag_data_sections) | |
4323 | { | |
4d6baafa | 4324 | warning ("-fdata-sections not supported for this target"); |
f5e99456 NB |
4325 | flag_data_sections = 0; |
4326 | } | |
4291d9c8 | 4327 | } |
f5e99456 | 4328 | |
8456b95a | 4329 | if (flag_function_sections && profile_flag) |
3d5cdd42 | 4330 | { |
4d6baafa | 4331 | warning ("-ffunction-sections disabled; it makes profiling impossible"); |
f5e99456 | 4332 | flag_function_sections = 0; |
3d5cdd42 | 4333 | } |
f5e99456 | 4334 | |
0dd0e980 JH |
4335 | #ifndef HAVE_prefetch |
4336 | if (flag_prefetch_loop_arrays) | |
4337 | { | |
4338 | warning ("-fprefetch-loop-arrays not supported for this target"); | |
4339 | flag_prefetch_loop_arrays = 0; | |
4340 | } | |
4341 | #else | |
4342 | if (flag_prefetch_loop_arrays && !HAVE_prefetch) | |
4343 | { | |
4344 | warning ("-fprefetch-loop-arrays not supported for this target (try -march switches)"); | |
4345 | flag_prefetch_loop_arrays = 0; | |
4346 | } | |
4347 | #endif | |
4348 | ||
1398974c JJ |
4349 | /* This combination of options isn't handled for i386 targets and doesn't |
4350 | make much sense anyway, so don't allow it. */ | |
4351 | if (flag_prefetch_loop_arrays && optimize_size) | |
4352 | { | |
4353 | warning ("-fprefetch-loop-arrays is not supported with -Os"); | |
4354 | flag_prefetch_loop_arrays = 0; | |
4355 | } | |
4356 | ||
f5e99456 NB |
4357 | #ifndef OBJECT_FORMAT_ELF |
4358 | if (flag_function_sections && write_symbols != NO_DEBUG) | |
4d6baafa | 4359 | warning ("-ffunction-sections may affect debugging on some targets"); |
f5e99456 | 4360 | #endif |
52bfebf0 RS |
4361 | |
4362 | /* The presence of IEEE signaling NaNs, implies all math can trap. */ | |
4363 | if (flag_signaling_nans) | |
4364 | flag_trapping_math = 1; | |
4291d9c8 | 4365 | } |
ddc9542b | 4366 | |
c79043f3 | 4367 | /* Initialize the compiler back end. */ |
f5e99456 | 4368 | static void |
e25a75e6 | 4369 | backend_init (void) |
f5e99456 | 4370 | { |
6cde4876 JL |
4371 | /* init_emit_once uses reg_raw_mode and therefore must be called |
4372 | after init_regs which initialized reg_raw_mode. */ | |
4373 | init_regs (); | |
f5e99456 NB |
4374 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
4375 | || debug_info_level == DINFO_LEVEL_VERBOSE | |
7a0c8d71 | 4376 | #ifdef VMS_DEBUGGING_INFO |
f9da5064 | 4377 | /* Enable line number info for traceback. */ |
7a0c8d71 DR |
4378 | || debug_info_level > DINFO_LEVEL_NONE |
4379 | #endif | |
4380 | || flag_test_coverage | |
4381 | || warn_notreached); | |
6cde4876 | 4382 | init_fake_stack_mems (); |
f5e99456 | 4383 | init_alias_once (); |
f5e99456 NB |
4384 | init_loop (); |
4385 | init_reload (); | |
4386 | init_function_once (); | |
f5e99456 | 4387 | init_varasm_once (); |
f5e99456 NB |
4388 | |
4389 | /* The following initialization functions need to generate rtl, so | |
4390 | provide a dummy function context for them. */ | |
4391 | init_dummy_function_start (); | |
4392 | init_expmed (); | |
f5e99456 NB |
4393 | if (flag_caller_saves) |
4394 | init_caller_save (); | |
4395 | expand_dummy_function_end (); | |
4396 | } | |
ddc9542b | 4397 | |
0e9e1e0a | 4398 | /* Language-dependent initialization. Returns nonzero on success. */ |
22703ccc | 4399 | static int |
e25a75e6 | 4400 | lang_dependent_init (const char *name) |
4291d9c8 | 4401 | { |
f5e99456 NB |
4402 | if (dump_base_name == 0) |
4403 | dump_base_name = name ? name : "gccdump"; | |
26182e15 | 4404 | |
4bfec483 NB |
4405 | /* Other front-end initialization. */ |
4406 | if ((*lang_hooks.init) () == 0) | |
22703ccc | 4407 | return 0; |
4291d9c8 | 4408 | |
f5e99456 | 4409 | init_asm_output (name); |
3d5cdd42 | 4410 | |
f5e99456 NB |
4411 | /* These create various _DECL nodes, so need to be called after the |
4412 | front end is initialized. */ | |
4413 | init_eh (); | |
4414 | init_optabs (); | |
7ab0121e JW |
4415 | |
4416 | /* The following initialization functions need to generate rtl, so | |
4417 | provide a dummy function context for them. */ | |
4418 | init_dummy_function_start (); | |
1f8c3c5b | 4419 | init_expr_once (); |
7ab0121e | 4420 | expand_dummy_function_end (); |
3d5cdd42 | 4421 | |
f5e99456 NB |
4422 | /* If dbx symbol table desired, initialize writing it and output the |
4423 | predefined types. */ | |
4424 | timevar_push (TV_SYMOUT); | |
4291d9c8 | 4425 | |
f5e99456 NB |
4426 | #ifdef DWARF2_UNWIND_INFO |
4427 | if (dwarf2out_do_frame ()) | |
4428 | dwarf2out_frame_init (); | |
4429 | #endif | |
4291d9c8 | 4430 | |
f5e99456 NB |
4431 | /* Now we have the correct original filename, we can initialize |
4432 | debug output. */ | |
4433 | (*debug_hooks->init) (name); | |
4291d9c8 | 4434 | |
f5e99456 | 4435 | timevar_pop (TV_SYMOUT); |
22703ccc NB |
4436 | |
4437 | return 1; | |
4438 | } | |
ddc9542b | 4439 | |
22703ccc NB |
4440 | /* Clean up: close opened files, etc. */ |
4441 | ||
4442 | static void | |
e25a75e6 | 4443 | finalize (void) |
22703ccc NB |
4444 | { |
4445 | /* Close the dump files. */ | |
4446 | if (flag_gen_aux_info) | |
4447 | { | |
4448 | fclose (aux_info_file); | |
4449 | if (errorcount) | |
4450 | unlink (aux_info_file_name); | |
4451 | } | |
4452 | ||
4453 | /* Close non-debugging input and output files. Take special care to note | |
4454 | whether fclose returns an error, since the pages might still be on the | |
4455 | buffer chain while the file is open. */ | |
4456 | ||
4457 | if (asm_out_file) | |
4458 | { | |
4459 | if (ferror (asm_out_file) != 0) | |
fa6ef813 | 4460 | fatal_error ("error writing to %s: %m", asm_file_name); |
22703ccc | 4461 | if (fclose (asm_out_file) != 0) |
fa6ef813 | 4462 | fatal_error ("error closing %s: %m", asm_file_name); |
22703ccc NB |
4463 | } |
4464 | ||
4465 | /* Do whatever is necessary to finish printing the graphs. */ | |
4466 | if (graph_dump_format != no_graph) | |
4467 | { | |
4468 | int i; | |
4469 | ||
4470 | for (i = 0; i < (int) DFI_MAX; ++i) | |
4471 | if (dump_file[i].initialized && dump_file[i].graph_dump_p) | |
4472 | { | |
4473 | char seq[16]; | |
4474 | char *suffix; | |
4475 | ||
6baf9874 | 4476 | sprintf (seq, DUMPFILE_FORMAT, i); |
22703ccc NB |
4477 | suffix = concat (seq, dump_file[i].extension, NULL); |
4478 | finish_graph_dump_file (dump_base_name, suffix); | |
4479 | free (suffix); | |
4480 | } | |
4481 | } | |
4482 | ||
4483 | if (mem_report) | |
4484 | { | |
4485 | ggc_print_statistics (); | |
4486 | stringpool_statistics (); | |
4487 | dump_tree_statistics (); | |
4488 | } | |
4489 | ||
4490 | /* Free up memory for the benefit of leak detectors. */ | |
4491 | free_reg_info (); | |
4492 | ||
4493 | /* Language-specific end of compilation actions. */ | |
4494 | (*lang_hooks.finish) (); | |
f5e99456 | 4495 | } |
ddc9542b | 4496 | |
4d6baafa NB |
4497 | /* Initialize the compiler, and compile the input file. */ |
4498 | static void | |
e25a75e6 | 4499 | do_compile (void) |
f5e99456 | 4500 | { |
09b04f2d NB |
4501 | /* Initialize timing first. The C front ends read the main file in |
4502 | the post_options hook, and C++ does file timings. */ | |
4503 | if (time_report || !quiet_flag || flag_detailed_statistics) | |
4504 | timevar_init (); | |
a9915c78 RK |
4505 | timevar_start (TV_TOTAL); |
4506 | ||
09b04f2d NB |
4507 | process_options (); |
4508 | ||
4509 | /* Don't do any more if an error has already occurred. */ | |
4510 | if (!errorcount) | |
4511 | { | |
4512 | /* Set up the back-end if requested. */ | |
4513 | if (!no_backend) | |
4514 | backend_init (); | |
f5e99456 | 4515 | |
09b04f2d | 4516 | /* Language-dependent initialization. Returns true on success. */ |
d7b42618 | 4517 | if (lang_dependent_init (main_input_filename)) |
a194aa56 | 4518 | { |
a9189cc0 SB |
4519 | if (flag_unit_at_a_time) |
4520 | { | |
4521 | open_dump_file (DFI_cgraph, NULL); | |
4522 | cgraph_dump_file = rtl_dump_file; | |
4523 | rtl_dump_file = NULL; | |
4524 | } | |
4525 | ||
4526 | compile_file (); | |
4527 | ||
4528 | if (flag_unit_at_a_time) | |
4529 | { | |
4530 | rtl_dump_file = cgraph_dump_file; | |
4531 | cgraph_dump_file = NULL; | |
4532 | close_dump_file (DFI_cgraph, NULL, NULL_RTX); | |
4533 | } | |
a194aa56 JH |
4534 | } |
4535 | ||
09b04f2d NB |
4536 | finalize (); |
4537 | } | |
f5e99456 NB |
4538 | |
4539 | /* Stop timing and print the times. */ | |
4540 | timevar_stop (TV_TOTAL); | |
4541 | timevar_print (stderr); | |
4d6baafa | 4542 | } |
ddc9542b | 4543 | |
4d6baafa NB |
4544 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
4545 | Decode command args, then call compile_file. | |
4546 | Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
4547 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
4548 | ||
4549 | It is not safe to call this function more than once. */ | |
4550 | ||
4551 | int | |
b86f6cd9 | 4552 | toplev_main (unsigned int argc, const char **argv) |
4d6baafa | 4553 | { |
b86f6cd9 NB |
4554 | save_argv = argv; |
4555 | ||
4d6baafa | 4556 | /* Initialization of GCC's environment, and diagnostics. */ |
9cabb1d8 | 4557 | general_init (argv[0]); |
4d6baafa NB |
4558 | |
4559 | /* Parse the options and do minimal processing; basically just | |
4560 | enough to default flags appropriately. */ | |
9756310a | 4561 | decode_options (argc, argv); |
4d6baafa | 4562 | |
c07e5477 NS |
4563 | randomize (); |
4564 | ||
4d6baafa | 4565 | /* Exit early if we can (e.g. -help). */ |
c79043f3 | 4566 | if (!exit_after_options) |
09b04f2d | 4567 | do_compile (); |
f5e99456 NB |
4568 | |
4569 | if (errorcount || sorrycount) | |
4570 | return (FATAL_EXIT_CODE); | |
4571 | ||
4572 | return (SUCCESS_EXIT_CODE); | |
4291d9c8 | 4573 | } |