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Commit | Line | Data |
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4291d9c8 | 1 | /* Top level of GNU C compiler |
4559fd9e | 2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
21c7361e | 3 | 1999, 2000, 2001 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" | |
4291d9c8 RS |
31 | #include <signal.h> |
32 | #include <setjmp.h> | |
956d6950 JL |
33 | |
34 | #ifdef HAVE_SYS_RESOURCE_H | |
35 | # include <sys/resource.h> | |
36 | #endif | |
37 | ||
38 | #ifdef HAVE_SYS_TIMES_H | |
39 | # include <sys/times.h> | |
eb910b5a | 40 | #endif |
4291d9c8 RS |
41 | |
42 | #include "input.h" | |
43 | #include "tree.h" | |
4291d9c8 | 44 | #include "rtl.h" |
6baf1cc8 | 45 | #include "tm_p.h" |
4291d9c8 RS |
46 | #include "flags.h" |
47 | #include "insn-attr.h" | |
e5e809f4 | 48 | #include "insn-config.h" |
23280139 | 49 | #include "hard-reg-set.h" |
e5e809f4 | 50 | #include "recog.h" |
e14417fa | 51 | #include "output.h" |
3d195391 | 52 | #include "except.h" |
49ad7cfa | 53 | #include "function.h" |
a0c8e1b2 | 54 | #include "toplev.h" |
114791ea | 55 | #include "expr.h" |
b1eeb243 | 56 | #include "basic-block.h" |
ab87f8c8 | 57 | #include "intl.h" |
0a25f1f5 | 58 | #include "ggc.h" |
6a2cc2ac | 59 | #include "graph.h" |
272df862 | 60 | #include "loop.h" |
d0af450d | 61 | #include "regs.h" |
2a9a326b | 62 | #include "timevar.h" |
764dbbf2 | 63 | #include "diagnostic.h" |
b53978a3 | 64 | #include "ssa.h" |
c6d9a88c | 65 | #include "params.h" |
8461e984 | 66 | #include "reload.h" |
5262d6b6 | 67 | #include "dwarf2asm.h" |
c0e7830f | 68 | #include "integrate.h" |
a51d908e | 69 | #include "debug.h" |
7c262518 | 70 | #include "target.h" |
f246a305 | 71 | |
76ead72b RL |
72 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) |
73 | #include "dwarf2out.h" | |
74 | #endif | |
75 | ||
4f70758f | 76 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
77 | #include "dbxout.h" |
78 | #endif | |
79 | ||
80 | #ifdef SDB_DEBUGGING_INFO | |
81 | #include "sdbout.h" | |
82 | #endif | |
440aabf8 NB |
83 | |
84 | #ifdef XCOFF_DEBUGGING_INFO | |
85 | #include "xcoffout.h" /* Needed for external data | |
86 | declarations for e.g. AIX 4.x. */ | |
87 | #endif | |
4291d9c8 RS |
88 | \f |
89 | #ifdef VMS | |
90 | /* The extra parameters substantially improve the I/O performance. */ | |
854a97f0 | 91 | |
4291d9c8 | 92 | static FILE * |
37c9f674 | 93 | vms_fopen (fname, type) |
854a97f0 KH |
94 | char *fname; |
95 | char *type; | |
4291d9c8 | 96 | { |
37c9f674 RK |
97 | /* The <stdio.h> in the gcc-vms-1.42 distribution prototypes fopen with two |
98 | fixed arguments, which matches ANSI's specification but not VAXCRTL's | |
99 | pre-ANSI implementation. This hack circumvents the mismatch problem. */ | |
100 | FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen; | |
101 | ||
102 | if (*type == 'w') | |
103 | return (*vmslib_fopen) (fname, type, "mbc=32", | |
104 | "deq=64", "fop=tef", "shr=nil"); | |
105 | else | |
106 | return (*vmslib_fopen) (fname, type, "mbc=32"); | |
4291d9c8 | 107 | } |
854a97f0 | 108 | |
37c9f674 | 109 | #define fopen vms_fopen |
854a97f0 | 110 | #endif /* VMS */ |
4291d9c8 RS |
111 | |
112 | #ifndef DEFAULT_GDB_EXTENSIONS | |
113 | #define DEFAULT_GDB_EXTENSIONS 1 | |
114 | #endif | |
115 | ||
30657ee3 | 116 | /* If more than one debugging type is supported, you must define |
854a97f0 | 117 | PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way. |
30657ee3 RK |
118 | |
119 | This is one long line cause VAXC can't handle a \-newline. */ | |
9a666dda | 120 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) |
30657ee3 RK |
121 | #ifndef PREFERRED_DEBUGGING_TYPE |
122 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! | |
123 | #endif /* no PREFERRED_DEBUGGING_TYPE */ | |
124 | #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE | |
125 | so the following code needn't care. */ | |
126 | #ifdef DBX_DEBUGGING_INFO | |
127 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
128 | #endif | |
129 | #ifdef SDB_DEBUGGING_INFO | |
130 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG | |
131 | #endif | |
132 | #ifdef DWARF_DEBUGGING_INFO | |
133 | #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG | |
134 | #endif | |
9a666dda JM |
135 | #ifdef DWARF2_DEBUGGING_INFO |
136 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
137 | #endif | |
30657ee3 RK |
138 | #ifdef XCOFF_DEBUGGING_INFO |
139 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG | |
140 | #endif | |
141 | #endif /* More than one debugger format enabled. */ | |
142 | ||
143 | /* If still not defined, must have been because no debugging formats | |
144 | are supported. */ | |
145 | #ifndef PREFERRED_DEBUGGING_TYPE | |
146 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG | |
147 | #endif | |
148 | ||
f31e826b | 149 | #if defined (HAVE_DECL_ENVIRON) && !HAVE_DECL_ENVIRON |
4291d9c8 | 150 | extern char **environ; |
4d7e336b | 151 | #endif |
4291d9c8 | 152 | |
b0316e35 RS |
153 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
154 | to ASM_FINISH_DECLARE_OBJECT. */ | |
155 | ||
156 | extern int size_directive_output; | |
5e10b3cc | 157 | extern tree last_assemble_variable_decl; |
b0316e35 | 158 | |
58782098 KG |
159 | static void set_target_switch PARAMS ((const char *)); |
160 | static const char *decl_name PARAMS ((tree, int)); | |
6ed551b4 | 161 | |
58782098 | 162 | static void float_signal PARAMS ((int)) ATTRIBUTE_NORETURN; |
a7023245 | 163 | static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN; |
94aca342 | 164 | static void set_float_handler PARAMS ((jmp_buf)); |
3b304f5b | 165 | static void compile_file PARAMS ((const char *)); |
58782098 | 166 | static void display_help PARAMS ((void)); |
10501d8f | 167 | static void display_target_options PARAMS ((void)); |
58782098 KG |
168 | |
169 | static void decode_d_option PARAMS ((const char *)); | |
61098249 RH |
170 | static int decode_f_option PARAMS ((const char *)); |
171 | static int decode_W_option PARAMS ((const char *)); | |
172 | static int decode_g_option PARAMS ((const char *)); | |
319ea138 | 173 | static unsigned int independent_decode_option PARAMS ((int, char **)); |
58782098 KG |
174 | |
175 | static void print_version PARAMS ((FILE *, const char *)); | |
176 | static int print_single_switch PARAMS ((FILE *, int, int, const char *, | |
87e11268 KG |
177 | const char *, const char *, |
178 | const char *, const char *)); | |
58782098 | 179 | static void print_switch_values PARAMS ((FILE *, int, int, const char *, |
87e11268 | 180 | const char *, const char *)); |
735a0e33 | 181 | |
3d5cdd42 DE |
182 | /* Length of line when printing switch values. */ |
183 | #define MAX_LINE 75 | |
184 | ||
4291d9c8 RS |
185 | /* Name of program invoked, sans directories. */ |
186 | ||
7adfcfed | 187 | const char *progname; |
4291d9c8 | 188 | |
aa5b94de | 189 | /* Copy of arguments to toplev_main. */ |
4291d9c8 RS |
190 | int save_argc; |
191 | char **save_argv; | |
192 | \f | |
193 | /* Name of current original source file (what was input to cpp). | |
194 | This comes from each #-command in the actual input. */ | |
195 | ||
3b304f5b | 196 | const char *input_filename; |
4291d9c8 RS |
197 | |
198 | /* Name of top-level original source file (what was input to cpp). | |
199 | This comes from the #-command at the beginning of the actual input. | |
200 | If there isn't any there, then this is the cc1 input file name. */ | |
201 | ||
3b304f5b | 202 | const char *main_input_filename; |
4291d9c8 | 203 | |
4291d9c8 RS |
204 | /* Current line number in real source file. */ |
205 | ||
206 | int lineno; | |
207 | ||
f1db3576 JL |
208 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
209 | int no_new_pseudos; | |
210 | ||
4291d9c8 RS |
211 | /* Stack of currently pending input files. */ |
212 | ||
213 | struct file_stack *input_file_stack; | |
214 | ||
215 | /* Incremented on each change to input_file_stack. */ | |
216 | int input_file_stack_tick; | |
217 | ||
4291d9c8 RS |
218 | /* Name to use as base of names for dump output files. */ |
219 | ||
87e11268 | 220 | const char *dump_base_name; |
4291d9c8 RS |
221 | |
222 | /* Bit flags that specify the machine subtype we are compiling for. | |
223 | Bits are tested using macros TARGET_... defined in the tm.h file | |
224 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
225 | ||
226 | extern int target_flags; | |
227 | ||
a51d908e NB |
228 | /* Debug hooks - dependent upon command line options. */ |
229 | ||
230 | struct gcc_debug_hooks *debug_hooks; | |
231 | ||
61098249 RH |
232 | /* Describes a dump file. */ |
233 | ||
234 | struct dump_file_info | |
235 | { | |
236 | /* The unique extension to apply, e.g. ".jump". */ | |
854a97f0 | 237 | const char *const extension; |
61098249 RH |
238 | |
239 | /* The -d<c> character that enables this dump file. */ | |
240 | char const debug_switch; | |
241 | ||
242 | /* True if there is a corresponding graph dump file. */ | |
243 | char const graph_dump_p; | |
244 | ||
245 | /* True if the user selected this dump. */ | |
246 | char enabled; | |
247 | ||
248 | /* True if the files have been initialized (ie truncated). */ | |
249 | char initialized; | |
250 | }; | |
251 | ||
252 | /* Enumerate the extant dump files. */ | |
253 | ||
254 | enum dump_file_index | |
255 | { | |
256 | DFI_rtl, | |
48d9ade5 | 257 | DFI_sibling, |
52a11cbf | 258 | DFI_eh, |
61098249 | 259 | DFI_jump, |
61098249 | 260 | DFI_ssa, |
0b47e4c1 | 261 | DFI_ssa_ccp, |
62d285ff | 262 | DFI_ssa_dce, |
61098249 | 263 | DFI_ussa, |
0826f1d8 JL |
264 | DFI_cse, |
265 | DFI_addressof, | |
61098249 RH |
266 | DFI_gcse, |
267 | DFI_loop, | |
268 | DFI_cse2, | |
51891abe | 269 | DFI_cfg, |
61098249 | 270 | DFI_bp, |
51891abe | 271 | DFI_life, |
61098249 | 272 | DFI_combine, |
9ec6d7ab | 273 | DFI_ce, |
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, |
2b2a8f1f | 282 | DFI_ce2, |
61098249 | 283 | DFI_sched2, |
1e5fd094 | 284 | DFI_stack, |
61098249 | 285 | DFI_bbro, |
61098249 RH |
286 | DFI_mach, |
287 | DFI_dbr, | |
61098249 RH |
288 | DFI_MAX |
289 | }; | |
290 | ||
291 | /* Describes all the dump files. Should be kept in order of the | |
9ec6d7ab RH |
292 | pass and in sync with dump_file_index above. |
293 | ||
294 | Remaining -d letters: | |
295 | ||
52a11cbf | 296 | " o q u " |
1e5fd094 | 297 | " H JK OPQ TUV YZ" |
9ec6d7ab | 298 | */ |
61098249 | 299 | |
854a97f0 | 300 | struct dump_file_info dump_file[DFI_MAX] = |
61098249 RH |
301 | { |
302 | { "rtl", 'r', 0, 0, 0 }, | |
48d9ade5 | 303 | { "sibling", 'i', 0, 0, 0 }, |
52a11cbf | 304 | { "eh", 'h', 0, 0, 0 }, |
61098249 | 305 | { "jump", 'j', 0, 0, 0 }, |
61098249 | 306 | { "ssa", 'e', 1, 0, 0 }, |
0b47e4c1 | 307 | { "ssaccp", 'W', 1, 0, 0 }, |
62d285ff | 308 | { "ssadce", 'X', 1, 0, 0 }, |
61098249 | 309 | { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
0826f1d8 JL |
310 | { "cse", 's', 0, 0, 0 }, |
311 | { "addressof", 'F', 0, 0, 0 }, | |
61098249 RH |
312 | { "gcse", 'G', 1, 0, 0 }, |
313 | { "loop", 'L', 1, 0, 0 }, | |
314 | { "cse2", 't', 1, 0, 0 }, | |
51891abe | 315 | { "cfg", 'f', 1, 0, 0 }, |
61098249 | 316 | { "bp", 'b', 1, 0, 0 }, |
51891abe | 317 | { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 318 | { "combine", 'c', 1, 0, 0 }, |
9ec6d7ab | 319 | { "ce", 'C', 1, 0, 0 }, |
61098249 RH |
320 | { "regmove", 'N', 1, 0, 0 }, |
321 | { "sched", 'S', 1, 0, 0 }, | |
322 | { "lreg", 'l', 1, 0, 0 }, | |
323 | { "greg", 'g', 1, 0, 0 }, | |
8bb16620 | 324 | { "postreload", 'o', 1, 0, 0 }, |
61098249 RH |
325 | { "flow2", 'w', 1, 0, 0 }, |
326 | { "peephole2", 'z', 1, 0, 0 }, | |
5fa41e13 | 327 | { "rnreg", 'n', 1, 0, 0 }, |
2b2a8f1f | 328 | { "ce2", 'E', 1, 0, 0 }, |
61098249 | 329 | { "sched2", 'R', 1, 0, 0 }, |
1e5fd094 | 330 | { "stack", 'k', 1, 0, 0 }, |
61098249 | 331 | { "bbro", 'B', 1, 0, 0 }, |
61098249 RH |
332 | { "mach", 'M', 1, 0, 0 }, |
333 | { "dbr", 'd', 0, 0, 0 }, | |
61098249 RH |
334 | }; |
335 | ||
336 | static int open_dump_file PARAMS ((enum dump_file_index, tree)); | |
337 | static void close_dump_file PARAMS ((enum dump_file_index, | |
338 | void (*) (FILE *, rtx), rtx)); | |
339 | ||
340 | /* Other flags saying which kinds of debugging dump have been requested. */ | |
341 | ||
342 | int rtl_dump_and_exit; | |
343 | int flag_print_asm_name; | |
61098249 | 344 | static int version_flag; |
854a97f0 | 345 | static char *filename; |
735a0e33 | 346 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
347 | |
348 | /* Name for output file of assembly code, specified with -o. */ | |
349 | ||
350 | char *asm_file_name; | |
351 | ||
352 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
353 | int g_switch_value; | |
354 | int g_switch_set; | |
355 | ||
356 | /* Type(s) of debugging information we are producing (if any). | |
357 | See flags.h for the definitions of the different possible | |
358 | types of debugging information. */ | |
359 | enum debug_info_type write_symbols = NO_DEBUG; | |
360 | ||
361 | /* Level of debugging information we are producing. See flags.h | |
362 | for the definitions of the different possible levels. */ | |
363 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
364 | ||
a53d0bcc RS |
365 | /* Nonzero means use GNU-only extensions in the generated symbolic |
366 | debugging information. */ | |
367 | /* Currently, this only has an effect when write_symbols is set to | |
368 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
369 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
370 | |
371 | /* Nonzero means do optimizations. -O. | |
372 | Particular numeric values stand for particular amounts of optimization; | |
373 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
374 | ones are not controlled directly by this variable. Instead, they are | |
375 | controlled by individual `flag_...' variables that are defaulted | |
376 | based on this variable. */ | |
377 | ||
378 | int optimize = 0; | |
379 | ||
c6aded7c AG |
380 | /* Nonzero means optimize for size. -Os. |
381 | The only valid values are zero and non-zero. When optimize_size is | |
382 | non-zero, optimize defaults to 2, but certain individual code | |
383 | bloating optimizations are disabled. */ | |
384 | ||
385 | int optimize_size = 0; | |
386 | ||
cb773845 ZW |
387 | /* Nonzero if we should exit after parsing options. */ |
388 | static int exit_after_options = 0; | |
389 | ||
00262c8a ML |
390 | /* The FUNCTION_DECL for the function currently being compiled, |
391 | or 0 if between functions. */ | |
392 | tree current_function_decl; | |
393 | ||
394 | /* Set to the FUNC_BEGIN label of the current function, or NULL_TREE | |
395 | if none. */ | |
396 | tree current_function_func_begin_label; | |
397 | ||
a1d7ffe3 JM |
398 | /* Pointer to function to compute the name to use to print a declaration. |
399 | DECL is the declaration in question. | |
400 | VERBOSITY determines what information will be printed: | |
401 | 0: DECL_NAME, demangled as necessary. | |
402 | 1: and scope information. | |
403 | 2: and any other information that might be interesting, such as function | |
404 | parameter types in C++. */ | |
4291d9c8 | 405 | |
58782098 | 406 | const char *(*decl_printable_name) PARAMS ((tree, int)); |
4291d9c8 RS |
407 | |
408 | /* Pointer to function to compute rtl for a language-specific tree code. */ | |
409 | ||
114791ea | 410 | typedef rtx (*lang_expand_expr_t) |
58782098 | 411 | PARAMS ((union tree_node *, rtx, enum machine_mode, |
114791ea KG |
412 | enum expand_modifier modifier)); |
413 | ||
414 | lang_expand_expr_t lang_expand_expr = 0; | |
4291d9c8 | 415 | |
58782098 | 416 | tree (*lang_expand_constant) PARAMS ((tree)) = 0; |
e697e20a | 417 | |
2b599527 RS |
418 | /* Pointer to function to finish handling an incomplete decl at the |
419 | end of compilation. */ | |
420 | ||
58782098 | 421 | void (*incomplete_decl_finalize_hook) PARAMS ((tree)) = 0; |
2b599527 | 422 | |
881c6935 JM |
423 | /* Nonzero if doing dwarf2 duplicate elimination. */ |
424 | ||
425 | int flag_eliminate_dwarf2_dups = 0; | |
426 | ||
4291d9c8 RS |
427 | /* Nonzero if generating code to do profiling. */ |
428 | ||
429 | int profile_flag = 0; | |
430 | ||
431 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ | |
432 | ||
433 | int profile_block_flag; | |
434 | ||
0d332add DE |
435 | /* Nonzero if generating code to profile program flow graph arcs. */ |
436 | ||
437 | int profile_arc_flag = 0; | |
438 | ||
439 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
440 | ||
441 | int flag_test_coverage = 0; | |
442 | ||
443 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
444 | ||
445 | int flag_branch_probabilities = 0; | |
446 | ||
854a97f0 | 447 | /* Nonzero if basic blocks should be reordered. */ |
11bdd2ae SC |
448 | |
449 | int flag_reorder_blocks = 0; | |
450 | ||
854a97f0 | 451 | /* Nonzero if registers should be renamed. */ |
7b82b5da SC |
452 | |
453 | int flag_rename_registers = 0; | |
454 | ||
4291d9c8 RS |
455 | /* Nonzero for -pedantic switch: warn about anything |
456 | that standard spec forbids. */ | |
457 | ||
458 | int pedantic = 0; | |
459 | ||
460 | /* Temporarily suppress certain warnings. | |
461 | This is set while reading code from a system header file. */ | |
462 | ||
463 | int in_system_header = 0; | |
464 | ||
fba0bfd4 | 465 | /* Don't print functions as they are compiled. -quiet. */ |
4291d9c8 RS |
466 | |
467 | int quiet_flag = 0; | |
fba0bfd4 ZW |
468 | |
469 | /* Print times taken by the various passes. -ftime-report. */ | |
470 | ||
471 | int time_report = 0; | |
472 | ||
473 | /* Print memory still in use at end of compilation (which may have little | |
474 | to do with peak memory consumption). -fmem-report. */ | |
475 | ||
476 | int mem_report = 0; | |
477 | ||
0e5921e8 ZW |
478 | /* Non-zero means to collect statistics which might be expensive |
479 | and to print them when we are done. */ | |
480 | int flag_detailed_statistics = 0; | |
481 | ||
4291d9c8 RS |
482 | \f |
483 | /* -f flags. */ | |
484 | ||
485 | /* Nonzero means `char' should be signed. */ | |
486 | ||
487 | int flag_signed_char; | |
488 | ||
489 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
490 | ||
491 | int flag_short_enums; | |
492 | ||
493 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
494 | be saved across function calls, if that produces overall better code. | |
495 | Optional now, so people can test it. */ | |
496 | ||
497 | #ifdef DEFAULT_CALLER_SAVES | |
498 | int flag_caller_saves = 1; | |
499 | #else | |
500 | int flag_caller_saves = 0; | |
501 | #endif | |
502 | ||
958ec8ca JW |
503 | /* Nonzero if structures and unions should be returned in memory. |
504 | ||
505 | This should only be defined if compatibility with another compiler or | |
506 | with an ABI is needed, because it results in slower code. */ | |
507 | ||
508 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
509 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
510 | #endif | |
511 | ||
4291d9c8 RS |
512 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
513 | ||
958ec8ca | 514 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
515 | |
516 | /* Nonzero for -fforce-mem: load memory value into a register | |
517 | before arithmetic on it. This makes better cse but slower compilation. */ | |
518 | ||
519 | int flag_force_mem = 0; | |
520 | ||
521 | /* Nonzero for -fforce-addr: load memory address into a register before | |
522 | reference to memory. This makes better cse but slower compilation. */ | |
523 | ||
524 | int flag_force_addr = 0; | |
525 | ||
526 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
527 | instead save them up to pop many calls' args with one insns. */ | |
528 | ||
6731a3e3 | 529 | int flag_defer_pop = 0; |
4291d9c8 RS |
530 | |
531 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
532 | in extended-precision registers. */ | |
533 | ||
534 | int flag_float_store = 0; | |
535 | ||
536 | /* Nonzero for -fcse-follow-jumps: | |
537 | have cse follow jumps to do a more extensive job. */ | |
538 | ||
539 | int flag_cse_follow_jumps; | |
540 | ||
8b3686ed RK |
541 | /* Nonzero for -fcse-skip-blocks: |
542 | have cse follow a branch around a block. */ | |
543 | int flag_cse_skip_blocks; | |
544 | ||
4291d9c8 RS |
545 | /* Nonzero for -fexpensive-optimizations: |
546 | perform miscellaneous relatively-expensive optimizations. */ | |
547 | int flag_expensive_optimizations; | |
548 | ||
549 | /* Nonzero for -fthread-jumps: | |
550 | have jump optimize output of loop. */ | |
551 | ||
552 | int flag_thread_jumps; | |
553 | ||
554 | /* Nonzero enables strength-reduction in loop.c. */ | |
555 | ||
556 | int flag_strength_reduce = 0; | |
557 | ||
558 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
559 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
560 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
561 | unrolled. */ | |
562 | ||
563 | int flag_unroll_loops; | |
564 | ||
565 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
566 | This is generally not a win. */ | |
567 | ||
568 | int flag_unroll_all_loops; | |
569 | ||
e5eb27e5 | 570 | /* Nonzero forces all invariant computations in loops to be moved |
854a97f0 | 571 | outside the loop. */ |
e5eb27e5 JL |
572 | |
573 | int flag_move_all_movables = 0; | |
574 | ||
575 | /* Nonzero forces all general induction variables in loops to be | |
854a97f0 | 576 | strength reduced. */ |
e5eb27e5 JL |
577 | |
578 | int flag_reduce_all_givs = 0; | |
579 | ||
9ec36da5 JL |
580 | /* Nonzero to perform full register move optimization passes. This is the |
581 | default for -O2. */ | |
582 | ||
583 | int flag_regmove = 0; | |
584 | ||
4291d9c8 RS |
585 | /* Nonzero for -fwritable-strings: |
586 | store string constants in data segment and don't uniquize them. */ | |
587 | ||
588 | int flag_writable_strings = 0; | |
589 | ||
590 | /* Nonzero means don't put addresses of constant functions in registers. | |
591 | Used for compiling the Unix kernel, where strange substitutions are | |
592 | done on the assembly output. */ | |
593 | ||
594 | int flag_no_function_cse = 0; | |
595 | ||
596 | /* Nonzero for -fomit-frame-pointer: | |
597 | don't make a frame pointer in simple functions that don't require one. */ | |
598 | ||
599 | int flag_omit_frame_pointer = 0; | |
600 | ||
cf440348 JL |
601 | /* Nonzero means place each function into its own section on those platforms |
602 | which support arbitrary section names and unlimited numbers of sections. */ | |
603 | ||
604 | int flag_function_sections = 0; | |
605 | ||
fd868572 | 606 | /* ... and similar for data. */ |
854a97f0 | 607 | |
fd868572 CM |
608 | int flag_data_sections = 0; |
609 | ||
4291d9c8 RS |
610 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
611 | ||
612 | int flag_no_peephole = 0; | |
613 | ||
db8cb48e JH |
614 | /* Nonzero allows GCC to optimize sibling and tail recursive calls. */ |
615 | ||
616 | int flag_optimize_sibling_calls = 0; | |
617 | ||
41af162c | 618 | /* Nonzero means the front end generally wants `errno' maintained by math |
de6c5979 | 619 | operations, like built-in SQRT. */ |
41af162c CB |
620 | |
621 | int flag_errno_math = 1; | |
622 | ||
de6c5979 BL |
623 | /* Nonzero means that unsafe floating-point math optimizations are allowed |
624 | for the sake of speed. IEEE compliance is not guaranteed, and operations | |
625 | are allowed to assume that their arguments and results are "normal" | |
626 | (e.g., nonnegative for SQRT). */ | |
627 | ||
628 | int flag_unsafe_math_optimizations = 0; | |
629 | ||
630 | /* Zero means that floating-point math operations cannot generate a | |
631 | (user-visible) trap. This is the case, for example, in nonstop | |
632 | IEEE 754 arithmetic. */ | |
633 | ||
634 | int flag_trapping_math = 1; | |
635 | ||
c64f913e CB |
636 | /* 0 means straightforward implementation of complex divide acceptable. |
637 | 1 means wide ranges of inputs must work for complex divide. | |
526aba28 | 638 | 2 means C99-like requirements for complex divide (not yet implemented). */ |
c64f913e CB |
639 | |
640 | int flag_complex_divide_method = 0; | |
641 | ||
4291d9c8 RS |
642 | /* Nonzero means all references through pointers are volatile. */ |
643 | ||
644 | int flag_volatile; | |
c6e75897 | 645 | |
ab87f8c8 | 646 | /* Nonzero means treat all global and extern variables as volatile. */ |
c6e75897 | 647 | |
38d4d0c2 | 648 | int flag_volatile_global; |
4291d9c8 | 649 | |
ab87f8c8 JL |
650 | /* Nonzero means treat all static variables as volatile. */ |
651 | ||
652 | int flag_volatile_static; | |
653 | ||
4291d9c8 RS |
654 | /* Nonzero means just do syntax checking; don't output anything. */ |
655 | ||
656 | int flag_syntax_only = 0; | |
657 | ||
7506f491 DE |
658 | /* Nonzero means perform global cse. */ |
659 | ||
660 | static int flag_gcse; | |
661 | ||
b6d24183 JL |
662 | /* Nonzero means to use global dataflow analysis to eliminate |
663 | useless null pointer tests. */ | |
664 | ||
665 | static int flag_delete_null_pointer_checks; | |
666 | ||
a13d4ebf AM |
667 | /* Nonzero means to do the enhanced load motion during gcse, which trys |
668 | to hoist loads by not killing them when a store to the same location | |
669 | is seen. */ | |
670 | ||
671 | int flag_gcse_lm = 1; | |
672 | ||
673 | /* Nonzero means to perform store motion after gcse, which will try to | |
674 | move stores closer to the exit block. Its not very effective without | |
675 | flag_gcse_lm. */ | |
676 | ||
677 | int flag_gcse_sm = 1; | |
678 | ||
4291d9c8 RS |
679 | /* Nonzero means to rerun cse after loop optimization. This increases |
680 | compilation time about 20% and picks up a few more common expressions. */ | |
681 | ||
682 | static int flag_rerun_cse_after_loop; | |
683 | ||
6d6d0fa0 JL |
684 | /* Nonzero means to run loop optimizations twice. */ |
685 | ||
64fde701 | 686 | int flag_rerun_loop_opt; |
6d6d0fa0 | 687 | |
4291d9c8 RS |
688 | /* Nonzero for -finline-functions: ok to inline functions that look like |
689 | good inline candidates. */ | |
690 | ||
691 | int flag_inline_functions; | |
692 | ||
693 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 694 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
695 | purposes. */ |
696 | ||
697 | int flag_keep_inline_functions; | |
698 | ||
fadb3bc9 | 699 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 RS |
700 | |
701 | int flag_no_inline; | |
702 | ||
fbe912dd BK |
703 | /* Nonzero means that we should emit static const variables |
704 | regardless of whether or not optimization is turned on. */ | |
705 | ||
706 | int flag_keep_static_consts = 1; | |
707 | ||
4291d9c8 RS |
708 | /* Nonzero means we should be saving declaration info into a .X file. */ |
709 | ||
710 | int flag_gen_aux_info = 0; | |
711 | ||
f246a305 RS |
712 | /* Specified name of aux-info file. */ |
713 | ||
714 | static char *aux_info_file_name; | |
715 | ||
4291d9c8 RS |
716 | /* Nonzero means make the text shared if supported. */ |
717 | ||
718 | int flag_shared_data; | |
719 | ||
720 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
721 | ||
722 | int flag_delayed_branch; | |
723 | ||
724 | /* Nonzero if we are compiling pure (sharable) code. | |
725 | Value is 1 if we are doing reasonable (i.e. simple | |
726 | offset into offset table) pic. Value is 2 if we can | |
727 | only perform register offsets. */ | |
728 | ||
729 | int flag_pic; | |
730 | ||
3d195391 MS |
731 | /* Nonzero means generate extra code for exception handling and enable |
732 | exception handling. */ | |
733 | ||
b53beeb2 | 734 | int flag_exceptions; |
3d195391 | 735 | |
854a97f0 | 736 | /* Nonzero means generate frame unwind info table when supported. */ |
14a774a9 RK |
737 | |
738 | int flag_unwind_tables = 0; | |
739 | ||
2786cbad | 740 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 741 | by default. */ |
4291d9c8 RS |
742 | |
743 | int flag_no_common; | |
744 | ||
745 | /* Nonzero means pretend it is OK to examine bits of target floats, | |
746 | even if that isn't true. The resulting code will have incorrect constants, | |
747 | but the same series of instructions that the native compiler would make. */ | |
748 | ||
749 | int flag_pretend_float; | |
750 | ||
751 | /* Nonzero means change certain warnings into errors. | |
752 | Usually these are warnings about failure to conform to some standard. */ | |
753 | ||
754 | int flag_pedantic_errors = 0; | |
755 | ||
756 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
757 | local_alloc). | |
758 | flag_schedule_insns_after_reload means schedule insns after | |
759 | global_alloc. */ | |
760 | ||
761 | int flag_schedule_insns = 0; | |
762 | int flag_schedule_insns_after_reload = 0; | |
763 | ||
8c660648 JL |
764 | /* The following flags have effect only for scheduling before register |
765 | allocation: | |
766 | ||
767 | flag_schedule_interblock means schedule insns accross basic blocks. | |
768 | flag_schedule_speculative means allow speculative motion of non-load insns. | |
769 | flag_schedule_speculative_load means allow speculative motion of some | |
770 | load insns. | |
771 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 772 | load insns. */ |
8c660648 JL |
773 | |
774 | int flag_schedule_interblock = 1; | |
775 | int flag_schedule_speculative = 1; | |
776 | int flag_schedule_speculative_load = 0; | |
777 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 | 778 | |
46d3a873 CC |
779 | int flag_single_precision_constant; |
780 | ||
5527bf14 | 781 | /* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple |
854a97f0 | 782 | by a cheaper branch on a count register. */ |
5527bf14 | 783 | int flag_branch_on_count_reg = 1; |
8c660648 | 784 | |
4291d9c8 | 785 | /* -finhibit-size-directive inhibits output of .size for ELF. |
854a97f0 | 786 | This is used only for compiling crtstuff.c, |
4291d9c8 RS |
787 | and it may be extended to other effects |
788 | needed for crtstuff.c on other systems. */ | |
789 | int flag_inhibit_size_directive = 0; | |
790 | ||
9a631e8e RS |
791 | /* -fverbose-asm causes extra commentary information to be produced in |
792 | the generated assembly code (to make it more readable). This option | |
793 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 794 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 795 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
796 | to be omitted and is useful when comparing two assembler files. */ |
797 | ||
c85f7c16 | 798 | int flag_verbose_asm = 0; |
9a631e8e | 799 | |
3d5cdd42 DE |
800 | /* -dA causes debug commentary information to be produced in |
801 | the generated assembly code (to make it more readable). This option | |
802 | is generally only of use to those who actually need to read the | |
803 | generated assembly code (perhaps while debugging the compiler itself). | |
804 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
805 | to be a catchall for printing debug information in the assembler file. */ | |
806 | ||
807 | int flag_debug_asm = 0; | |
9a631e8e | 808 | |
c349e40b SC |
809 | /* -dP causes the rtl to be emitted as a comment in assembly. */ |
810 | ||
811 | int flag_dump_rtl_in_asm = 0; | |
812 | ||
4291d9c8 | 813 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
814 | (Or, more generally, a linker that handles initializations.) |
815 | -fno-gnu-linker says that collect2 will be used. */ | |
816 | #ifdef USE_COLLECT2 | |
817 | int flag_gnu_linker = 0; | |
818 | #else | |
4291d9c8 | 819 | int flag_gnu_linker = 1; |
d68c507d | 820 | #endif |
4291d9c8 | 821 | |
d9d4fb43 AS |
822 | /* Enable SSA. */ |
823 | int flag_ssa = 0; | |
824 | ||
0b47e4c1 JL |
825 | /* Enable ssa conditional constant propagation. */ |
826 | int flag_ssa_ccp = 0; | |
827 | ||
828 | /* Enable ssa aggressive dead code elimination. */ | |
62d285ff | 829 | int flag_ssa_dce = 0; |
b53978a3 | 830 | |
854a97f0 | 831 | /* Tag all structures with __attribute__(packed). */ |
566cdc73 MM |
832 | int flag_pack_struct = 0; |
833 | ||
bd83d0ac RK |
834 | /* Emit code to check for stack overflow; also may cause large objects |
835 | to be allocated dynamically. */ | |
836 | int flag_stack_check; | |
837 | ||
a157febd GK |
838 | /* When non-NULL, indicates that whenever space is allocated on the |
839 | stack, the resulting stack pointer must not pass this | |
840 | address---that is, for stacks that grow downward, the stack pointer | |
841 | must always be greater than or equal to this address; for stacks | |
842 | that grow upward, the stack pointer must be less than this address. | |
843 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
844 | the support provided depends on the backend. */ | |
845 | rtx stack_limit_rtx; | |
846 | ||
f602c208 RK |
847 | /* -fcheck-memory-usage causes extra code to be generated in order to check |
848 | memory accesses. This is used by a detector of bad memory accesses such | |
849 | as Checker. */ | |
850 | int flag_check_memory_usage = 0; | |
851 | ||
852 | /* -fprefix-function-name causes function name to be prefixed. This | |
853 | can be used with -fcheck-memory-usage to isolate code compiled with | |
854 | -fcheck-memory-usage. */ | |
855 | int flag_prefix_function_name = 0; | |
856 | ||
9ae8ffe7 JL |
857 | /* 0 if pointer arguments may alias each other. True in C. |
858 | 1 if pointer arguments may not alias each other but may alias | |
859 | global variables. | |
860 | 2 if pointer arguments may not alias each other and may not | |
861 | alias global variables. True in Fortran. | |
862 | This defaults to 0 for C. */ | |
863 | int flag_argument_noalias = 0; | |
864 | ||
41472af8 MM |
865 | /* Nonzero if we should do (language-dependent) alias analysis. |
866 | Typically, this analysis will assume that expressions of certain | |
867 | types do not alias expressions of certain other types. Only used | |
868 | if alias analysis (in general) is enabled. */ | |
869 | int flag_strict_aliasing = 0; | |
870 | ||
07417085 KR |
871 | /* Instrument functions with calls at entry and exit, for profiling. */ |
872 | int flag_instrument_function_entry_exit = 0; | |
873 | ||
be163a70 ZW |
874 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
875 | On SVR4 targets, it also controls whether or not to emit a | |
876 | string identifying the compiler. */ | |
877 | ||
878 | int flag_no_ident = 0; | |
b8468bc7 | 879 | |
854a97f0 | 880 | /* This will perform a peephole pass before sched2. */ |
ede7cd44 RH |
881 | int flag_peephole2 = 0; |
882 | ||
3ff51205 AH |
883 | /* This will try to guess branch probabilities. */ |
884 | int flag_guess_branch_prob = 0; | |
885 | ||
a8aa7975 GM |
886 | /* -fbounded-pointers causes gcc to compile pointers as composite |
887 | objects occupying three words: the pointer value, the base address | |
888 | of the referent object, and the address immediately beyond the end | |
889 | of the referent object. The base and extent allow us to perform | |
890 | runtime bounds checking. -fbounded-pointers implies -fcheck-bounds. */ | |
891 | int flag_bounded_pointers = 0; | |
892 | ||
893 | /* -fcheck-bounds causes gcc to generate array bounds checks. | |
894 | For C, C++: defaults to value of flag_bounded_pointers. | |
895 | For ObjC: defaults to off. | |
896 | For Java: defaults to on. | |
897 | For Fortran: defaults to off. | |
898 | For CHILL: defaults to off. */ | |
899 | int flag_bounds_check = 0; | |
900 | ||
201556f0 JJ |
901 | /* This will attempt to merge constant section constants, if 1 only |
902 | string constants and constants from constant pool, if 2 also constant | |
903 | variables. */ | |
904 | int flag_merge_constants = 1; | |
905 | ||
673b5311 MM |
906 | /* If one, renumber instruction UIDs to reduce the number of |
907 | unused UIDs if there are a lot of instructions. If greater than | |
908 | one, unconditionally renumber instruction UIDs. */ | |
909 | int flag_renumber_insns = 1; | |
910 | ||
854a97f0 KH |
911 | /* Values of the -falign-* flags: how much to align labels in code. |
912 | 0 means `use default', 1 means `don't align'. | |
efa3896a GK |
913 | For each variable, there is an _log variant which is the power |
914 | of two not less than the variable, for .align output. */ | |
915 | ||
916 | int align_loops; | |
917 | int align_loops_log; | |
918 | int align_jumps; | |
919 | int align_jumps_log; | |
920 | int align_labels; | |
921 | int align_labels_log; | |
922 | int align_functions; | |
923 | int align_functions_log; | |
924 | ||
b8468bc7 NC |
925 | /* Table of supported debugging formats. */ |
926 | static struct | |
927 | { | |
854a97f0 | 928 | const char *arg; |
b8468bc7 NC |
929 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
930 | constant expression, we use NO_DEBUG in its place. */ | |
931 | enum debug_info_type debug_type; | |
932 | int use_extensions_p; | |
854a97f0 | 933 | const char *description; |
b8468bc7 NC |
934 | } *da, |
935 | debug_args[] = | |
936 | { | |
39dd8003 | 937 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
a6371940 ZW |
938 | N_("Generate debugging info in default format") }, |
939 | { "gdb", NO_DEBUG, 1, N_("Generate debugging info in default extended format") }, | |
b8468bc7 | 940 | #ifdef DBX_DEBUGGING_INFO |
a6371940 ZW |
941 | { "stabs", DBX_DEBUG, 0, N_("Generate STABS format debug info") }, |
942 | { "stabs+", DBX_DEBUG, 1, N_("Generate extended STABS format debug info") }, | |
b8468bc7 NC |
943 | #endif |
944 | #ifdef DWARF_DEBUGGING_INFO | |
a6371940 | 945 | { "dwarf", DWARF_DEBUG, 0, N_("Generate DWARF-1 format debug info") }, |
39dd8003 | 946 | { "dwarf+", DWARF_DEBUG, 1, |
a6371940 | 947 | N_("Generate extended DWARF-1 format debug info") }, |
b8468bc7 NC |
948 | #endif |
949 | #ifdef DWARF2_DEBUGGING_INFO | |
a6371940 | 950 | { "dwarf-2", DWARF2_DEBUG, 0, N_("Generate DWARF-2 debug info") }, |
b8468bc7 NC |
951 | #endif |
952 | #ifdef XCOFF_DEBUGGING_INFO | |
a6371940 ZW |
953 | { "xcoff", XCOFF_DEBUG, 0, N_("Generate XCOFF format debug info") }, |
954 | { "xcoff+", XCOFF_DEBUG, 1, N_("Generate extended XCOFF format debug info") }, | |
b8468bc7 NC |
955 | #endif |
956 | #ifdef SDB_DEBUGGING_INFO | |
a6371940 | 957 | { "coff", SDB_DEBUG, 0, N_("Generate COFF format debug info") }, |
b8468bc7 | 958 | #endif |
c84e2712 | 959 | { 0, 0, 0, 0 } |
b8468bc7 NC |
960 | }; |
961 | ||
962 | typedef struct | |
963 | { | |
854a97f0 KH |
964 | const char *string; |
965 | int *variable; | |
966 | int on_value; | |
967 | const char *description; | |
b8468bc7 NC |
968 | } |
969 | lang_independent_options; | |
970 | ||
91ce572a CC |
971 | int flag_trapv = 0; |
972 | ||
19283265 RH |
973 | /* Add or remove a leading underscore from user symbols. */ |
974 | int flag_leading_underscore = -1; | |
975 | ||
976 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 977 | const char *user_label_prefix; |
19283265 | 978 | |
c6d9a88c MM |
979 | static const param_info lang_independent_params[] = { |
980 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT) \ | |
1c4c47db | 981 | { OPTION, DEFAULT, HELP }, |
c6d9a88c MM |
982 | #include "params.def" |
983 | #undef DEFPARAM | |
1c4c47db | 984 | { NULL, 0, NULL } |
c6d9a88c MM |
985 | }; |
986 | ||
19283265 RH |
987 | /* A default for same. */ |
988 | #ifndef USER_LABEL_PREFIX | |
989 | #define USER_LABEL_PREFIX "" | |
990 | #endif | |
991 | ||
4291d9c8 RS |
992 | /* Table of language-independent -f options. |
993 | STRING is the option name. VARIABLE is the address of the variable. | |
994 | ON_VALUE is the value to store in VARIABLE | |
995 | if `-fSTRING' is seen as an option. | |
996 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
997 | ||
b8468bc7 | 998 | lang_independent_options f_options[] = |
4291d9c8 | 999 | { |
21c7361e | 1000 | {"eliminate-dwarf2-dups", &flag_eliminate_dwarf2_dups, 1, |
a6371940 | 1001 | N_("Perform DWARF2 duplicate elimination") }, |
b8468bc7 | 1002 | {"float-store", &flag_float_store, 1, |
a6371940 | 1003 | N_("Do not store floats in registers") }, |
b8468bc7 | 1004 | {"volatile", &flag_volatile, 1, |
a6371940 | 1005 | N_("Consider all mem refs through pointers as volatile") }, |
b8468bc7 | 1006 | {"volatile-global", &flag_volatile_global, 1, |
a6371940 | 1007 | N_("Consider all mem refs to global data to be volatile") }, |
ab87f8c8 | 1008 | {"volatile-static", &flag_volatile_static, 1, |
a6371940 | 1009 | N_("Consider all mem refs to static data to be volatile") }, |
b8468bc7 | 1010 | {"defer-pop", &flag_defer_pop, 1, |
a6371940 | 1011 | N_("Defer popping functions args from stack until later") }, |
b8468bc7 | 1012 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, |
a6371940 | 1013 | N_("When possible do not generate stack frames") }, |
db8cb48e | 1014 | {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1, |
a6371940 | 1015 | N_("Optimize sibling and tail recursive calls") }, |
b8468bc7 | 1016 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, |
a6371940 | 1017 | N_("When running CSE, follow jumps to their targets") }, |
b8468bc7 | 1018 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, |
a6371940 | 1019 | N_("When running CSE, follow conditional jumps") }, |
b8468bc7 | 1020 | {"expensive-optimizations", &flag_expensive_optimizations, 1, |
a6371940 | 1021 | N_("Perform a number of minor, expensive optimisations") }, |
b8468bc7 | 1022 | {"thread-jumps", &flag_thread_jumps, 1, |
a6371940 | 1023 | N_("Perform jump threading optimisations") }, |
b8468bc7 | 1024 | {"strength-reduce", &flag_strength_reduce, 1, |
a6371940 | 1025 | N_("Perform strength reduction optimisations") }, |
b8468bc7 | 1026 | {"unroll-loops", &flag_unroll_loops, 1, |
a6371940 | 1027 | N_("Perform loop unrolling when iteration count is known") }, |
b8468bc7 | 1028 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
a6371940 | 1029 | N_("Perform loop unrolling for all loops") }, |
b8468bc7 | 1030 | {"move-all-movables", &flag_move_all_movables, 1, |
a6371940 | 1031 | N_("Force all loop invariant computations out of loops") }, |
b8468bc7 | 1032 | {"reduce-all-givs", &flag_reduce_all_givs, 1, |
a6371940 | 1033 | N_("Strength reduce all loop general induction variables") }, |
b8468bc7 | 1034 | {"writable-strings", &flag_writable_strings, 1, |
a6371940 | 1035 | N_("Store strings in writable data section") }, |
b8468bc7 | 1036 | {"peephole", &flag_no_peephole, 0, |
a6371940 | 1037 | N_("Enable machine specific peephole optimisations") }, |
b8468bc7 | 1038 | {"force-mem", &flag_force_mem, 1, |
a6371940 | 1039 | N_("Copy memory operands into registers before using") }, |
b8468bc7 | 1040 | {"force-addr", &flag_force_addr, 1, |
a6371940 | 1041 | N_("Copy memory address constants into regs before using") }, |
b8468bc7 | 1042 | {"function-cse", &flag_no_function_cse, 0, |
a6371940 | 1043 | N_("Allow function addresses to be held in registers") }, |
b8468bc7 | 1044 | {"inline-functions", &flag_inline_functions, 1, |
a6371940 | 1045 | N_("Integrate simple functions into their callers") }, |
b8468bc7 | 1046 | {"keep-inline-functions", &flag_keep_inline_functions, 1, |
a6371940 | 1047 | N_("Generate code for funcs even if they are fully inlined") }, |
b8468bc7 | 1048 | {"inline", &flag_no_inline, 0, |
a6371940 | 1049 | N_("Pay attention to the 'inline' keyword") }, |
b8468bc7 | 1050 | {"keep-static-consts", &flag_keep_static_consts, 1, |
a6371940 | 1051 | N_("Emit static const variables even if they are not used") }, |
b8468bc7 | 1052 | {"syntax-only", &flag_syntax_only, 1, |
a6371940 | 1053 | N_("Check for syntax errors, then stop") }, |
b8468bc7 | 1054 | {"shared-data", &flag_shared_data, 1, |
a6371940 | 1055 | N_("Mark data as shared rather than private") }, |
b8468bc7 | 1056 | {"caller-saves", &flag_caller_saves, 1, |
a6371940 | 1057 | N_("Enable saving registers around function calls") }, |
b8468bc7 | 1058 | {"pcc-struct-return", &flag_pcc_struct_return, 1, |
a6371940 | 1059 | N_("Return 'short' aggregates in memory, not registers") }, |
b8468bc7 | 1060 | {"reg-struct-return", &flag_pcc_struct_return, 0, |
a6371940 | 1061 | N_("Return 'short' aggregates in registers") }, |
b8468bc7 | 1062 | {"delayed-branch", &flag_delayed_branch, 1, |
a6371940 | 1063 | N_("Attempt to fill delay slots of branch instructions") }, |
b8468bc7 | 1064 | {"gcse", &flag_gcse, 1, |
a6371940 | 1065 | N_("Perform the global common subexpression elimination") }, |
a13d4ebf | 1066 | {"gcse-lm", &flag_gcse_lm, 1, |
a6371940 | 1067 | N_("Perform enhanced load motion during global subexpression elimination") }, |
a13d4ebf | 1068 | {"gcse-sm", &flag_gcse_sm, 1, |
a6371940 | 1069 | N_("Perform store motion after global subexpression elimination") }, |
b8468bc7 | 1070 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, |
a6371940 | 1071 | N_("Run CSE pass after loop optimisations") }, |
b8468bc7 | 1072 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, |
a6371940 | 1073 | N_("Run the loop optimiser twice") }, |
b6d24183 | 1074 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1, |
a6371940 | 1075 | N_("Delete useless null pointer checks") }, |
b8468bc7 | 1076 | {"pretend-float", &flag_pretend_float, 1, |
a6371940 | 1077 | N_("Pretend that host and target use the same FP format") }, |
b8468bc7 | 1078 | {"schedule-insns", &flag_schedule_insns, 1, |
a6371940 | 1079 | N_("Reschedule instructions before register allocation") }, |
b8468bc7 | 1080 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, |
a6371940 | 1081 | N_("Reschedule instructions after register allocation") }, |
b8468bc7 | 1082 | {"sched-interblock",&flag_schedule_interblock, 1, |
a6371940 | 1083 | N_("Enable scheduling across basic blocks") }, |
b8468bc7 | 1084 | {"sched-spec",&flag_schedule_speculative, 1, |
a6371940 | 1085 | N_("Allow speculative motion of non-loads") }, |
b8468bc7 | 1086 | {"sched-spec-load",&flag_schedule_speculative_load, 1, |
a6371940 | 1087 | N_("Allow speculative motion of some loads") }, |
b8468bc7 | 1088 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, |
a6371940 | 1089 | N_("Allow speculative motion of more loads") }, |
b8468bc7 | 1090 | {"branch-count-reg",&flag_branch_on_count_reg, 1, |
a6371940 | 1091 | N_("Replace add,compare,branch with branch on count reg") }, |
b8468bc7 | 1092 | {"pic", &flag_pic, 1, |
a6371940 | 1093 | N_("Generate position independent code, if possible") }, |
b8468bc7 NC |
1094 | {"PIC", &flag_pic, 2, ""}, |
1095 | {"exceptions", &flag_exceptions, 1, | |
a6371940 | 1096 | N_("Enable exception handling") }, |
14a774a9 | 1097 | {"unwind-tables", &flag_unwind_tables, 1, |
a6371940 | 1098 | N_("Just generate unwind tables for exception handling") }, |
c1e9f663 | 1099 | {"non-call-exceptions", &flag_non_call_exceptions, 1, |
a6371940 | 1100 | N_("Support synchronous non-call exceptions") }, |
b8468bc7 | 1101 | {"profile-arcs", &profile_arc_flag, 1, |
a6371940 | 1102 | N_("Insert arc based program profiling code") }, |
b8468bc7 | 1103 | {"test-coverage", &flag_test_coverage, 1, |
a6371940 | 1104 | N_("Create data files needed by gcov") }, |
b8468bc7 | 1105 | {"branch-probabilities", &flag_branch_probabilities, 1, |
a6371940 | 1106 | N_("Use profiling information for branch probabilities") }, |
11bdd2ae | 1107 | {"reorder-blocks", &flag_reorder_blocks, 1, |
a6371940 | 1108 | N_("Reorder basic blocks to improve code placement") }, |
7b82b5da | 1109 | {"rename-registers", &flag_rename_registers, 1, |
a6371940 | 1110 | N_("Do the register renaming optimization pass") }, |
b8468bc7 | 1111 | {"common", &flag_no_common, 0, |
a6371940 | 1112 | N_("Do not put unitialised globals in the common section") }, |
b8468bc7 | 1113 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, |
a6371940 | 1114 | N_("Do not generate .size directives") }, |
b8468bc7 | 1115 | {"function-sections", &flag_function_sections, 1, |
a6371940 | 1116 | N_("place each function into its own section") }, |
257441db | 1117 | {"data-sections", &flag_data_sections, 1, |
a6371940 | 1118 | N_("place data items into their own section") }, |
b8468bc7 | 1119 | {"verbose-asm", &flag_verbose_asm, 1, |
a6371940 | 1120 | N_("Add extra commentry to assembler output") }, |
b8468bc7 | 1121 | {"gnu-linker", &flag_gnu_linker, 1, |
a6371940 | 1122 | N_("Output GNU ld formatted global initialisers") }, |
b8468bc7 | 1123 | {"regmove", &flag_regmove, 1, |
a6371940 | 1124 | N_("Enables a register move optimisation") }, |
c84e2712 | 1125 | {"optimize-register-move", &flag_regmove, 1, |
a6371940 | 1126 | N_("Do the full regmove optimization pass") }, |
b8468bc7 | 1127 | {"pack-struct", &flag_pack_struct, 1, |
a6371940 | 1128 | N_("Pack structure members together without holes") }, |
b8468bc7 | 1129 | {"stack-check", &flag_stack_check, 1, |
a6371940 | 1130 | N_("Insert stack checking code into the program") }, |
b8468bc7 | 1131 | {"argument-alias", &flag_argument_noalias, 0, |
a6371940 | 1132 | N_("Specify that arguments may alias each other & globals") }, |
b8468bc7 | 1133 | {"argument-noalias", &flag_argument_noalias, 1, |
a6371940 | 1134 | N_("Assume arguments may alias globals but not each other") }, |
b8468bc7 | 1135 | {"argument-noalias-global", &flag_argument_noalias, 2, |
a6371940 | 1136 | N_("Assume arguments do not alias each other or globals") }, |
b8468bc7 | 1137 | {"strict-aliasing", &flag_strict_aliasing, 1, |
a6371940 | 1138 | N_("Assume strict aliasing rules apply") }, |
854a97f0 | 1139 | {"align-loops", &align_loops, 0, |
a6371940 | 1140 | N_("Align the start of loops") }, |
854a97f0 | 1141 | {"align-jumps", &align_jumps, 0, |
a6371940 | 1142 | N_("Align labels which are only reached by jumping") }, |
efa3896a | 1143 | {"align-labels", &align_labels, 0, |
a6371940 | 1144 | N_("Align all labels") }, |
efa3896a | 1145 | {"align-functions", &align_functions, 0, |
a6371940 | 1146 | N_("Align the start of functions") }, |
201556f0 JJ |
1147 | {"merge-constants", &flag_merge_constants, 1, |
1148 | N_("Attempt to merge identical constants accross compilation units") }, | |
1149 | {"merge-all-constants", &flag_merge_constants, 2, | |
1150 | N_("Attempt to merge identical constants and constant variables") }, | |
b8468bc7 | 1151 | {"check-memory-usage", &flag_check_memory_usage, 1, |
a6371940 | 1152 | N_("Generate code to check every memory access") }, |
b8468bc7 | 1153 | {"prefix-function-name", &flag_prefix_function_name, 1, |
a6371940 | 1154 | N_("Add a prefix to all function names") }, |
c84e2712 | 1155 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
a6371940 | 1156 | N_("Suppress output of instruction numbers and line number notes in debugging dumps") }, |
07417085 | 1157 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
a6371940 | 1158 | N_("Instrument function entry/exit with profiling calls") }, |
d9d4fb43 | 1159 | {"ssa", &flag_ssa, 1, |
a6371940 | 1160 | N_("Enable SSA optimizations") }, |
0b47e4c1 JL |
1161 | {"ssa-ccp", &flag_ssa_ccp, 1, |
1162 | N_("Enable SSA conditonal constant propagation") }, | |
62d285ff JL |
1163 | {"ssa-dce", &flag_ssa_dce, 1, |
1164 | N_("Enable aggressive SSA dead code elimination") }, | |
19283265 | 1165 | {"leading-underscore", &flag_leading_underscore, 1, |
a6371940 | 1166 | N_("External symbols have a leading underscore") }, |
be163a70 | 1167 | {"ident", &flag_no_ident, 0, |
a6371940 | 1168 | N_("Process #ident directives") }, |
ede7cd44 | 1169 | { "peephole2", &flag_peephole2, 1, |
a6371940 | 1170 | N_("Enables an rtl peephole pass run before sched2") }, |
3ff51205 | 1171 | { "guess-branch-probability", &flag_guess_branch_prob, 1, |
a6371940 | 1172 | N_("Enables guessing of branch probabilities") }, |
9605da8a | 1173 | {"math-errno", &flag_errno_math, 1, |
a6371940 | 1174 | N_("Set errno after built-in math functions") }, |
de6c5979 | 1175 | {"trapping-math", &flag_trapping_math, 1, |
a6371940 | 1176 | N_("Floating-point operations can trap") }, |
de6c5979 | 1177 | {"unsafe-math-optimizations", &flag_unsafe_math_optimizations, 1, |
a6371940 | 1178 | N_("Allow math optimizations that may violate IEEE or ANSI standards") }, |
a8aa7975 | 1179 | {"bounded-pointers", &flag_bounded_pointers, 1, |
a6371940 | 1180 | N_("Compile pointers as triples: value, base & end") }, |
a8aa7975 | 1181 | {"bounds-check", &flag_bounds_check, 1, |
a6371940 | 1182 | N_("Generate code to check bounds before dereferencing pointers and arrays") }, |
46d3a873 | 1183 | {"single-precision-constant", &flag_single_precision_constant, 1, |
a6371940 | 1184 | N_("Convert floating point constant to single precision constant") }, |
94b23dd5 | 1185 | {"time-report", &time_report, 1, |
a6371940 | 1186 | N_("Report time taken by each compiler pass at end of run") }, |
94b23dd5 | 1187 | {"mem-report", &mem_report, 1, |
a6371940 | 1188 | N_("Report on permanent memory allocation at end of run") }, |
91ce572a | 1189 | { "trapv", &flag_trapv, 1, |
a6371940 | 1190 | N_("Trap for signed overflow in addition / subtraction / multiplication.") }, |
4291d9c8 | 1191 | }; |
b99933c7 RS |
1192 | |
1193 | /* Table of language-specific options. */ | |
1194 | ||
b8468bc7 NC |
1195 | static struct lang_opt |
1196 | { | |
854a97f0 KH |
1197 | const char *option; |
1198 | const char *description; | |
b8468bc7 NC |
1199 | } |
1200 | documented_lang_options[] = | |
b99933c7 | 1201 | { |
b8468bc7 NC |
1202 | /* In order not to overload the --help output, the convention |
1203 | used here is to only describe those options which are not | |
1204 | enabled by default. */ | |
1205 | ||
a6371940 ZW |
1206 | { "-ansi", |
1207 | N_("Compile just for ISO C89") }, | |
b8468bc7 | 1208 | { "-fallow-single-precision", |
a6371940 ZW |
1209 | N_("Do not promote floats to double if using -traditional") }, |
1210 | { "-std= ", | |
1211 | N_("Determine language standard") }, | |
b8468bc7 NC |
1212 | |
1213 | { "-fsigned-bitfields", "" }, | |
a6371940 ZW |
1214 | { "-funsigned-bitfields", |
1215 | N_("Make bitfields by unsigned by default") }, | |
b8468bc7 NC |
1216 | { "-fno-signed-bitfields", "" }, |
1217 | { "-fno-unsigned-bitfields","" }, | |
a6371940 ZW |
1218 | { "-fsigned-char", |
1219 | N_("Make 'char' be signed by default") }, | |
1220 | { "-funsigned-char", | |
1221 | N_("Make 'char' be unsigned by default") }, | |
b8468bc7 NC |
1222 | { "-fno-signed-char", "" }, |
1223 | { "-fno-unsigned-char", "" }, | |
1224 | ||
1225 | { "-ftraditional", "" }, | |
a6371940 ZW |
1226 | { "-traditional", |
1227 | N_("Attempt to support traditional K&R style C") }, | |
b8468bc7 NC |
1228 | { "-fnotraditional", "" }, |
1229 | { "-fno-traditional", "" }, | |
1230 | ||
1231 | { "-fasm", "" }, | |
a6371940 ZW |
1232 | { "-fno-asm", |
1233 | N_("Do not recognise the 'asm' keyword") }, | |
b8468bc7 | 1234 | { "-fbuiltin", "" }, |
a6371940 ZW |
1235 | { "-fno-builtin", |
1236 | N_("Do not recognise any built in functions") }, | |
1237 | { "-fhosted", | |
1238 | N_("Assume normal C execution environment") }, | |
b8468bc7 NC |
1239 | { "-fno-hosted", "" }, |
1240 | { "-ffreestanding", | |
a6371940 | 1241 | N_("Assume that standard libraries & main might not exist") }, |
b8468bc7 | 1242 | { "-fno-freestanding", "" }, |
a6371940 ZW |
1243 | { "-fcond-mismatch", |
1244 | N_("Allow different types as args of ? operator") }, | |
b8468bc7 | 1245 | { "-fno-cond-mismatch", "" }, |
a6371940 ZW |
1246 | { "-fdollars-in-identifiers", |
1247 | N_("Allow the use of $ inside identifiers") }, | |
b8468bc7 | 1248 | { "-fno-dollars-in-identifiers", "" }, |
3773a46b JM |
1249 | { "-fpreprocessed", "" }, |
1250 | { "-fno-preprocessed", "" }, | |
a6371940 ZW |
1251 | { "-fshort-double", |
1252 | N_("Use the same size for double as for float") }, | |
b8468bc7 | 1253 | { "-fno-short-double", "" }, |
a6371940 ZW |
1254 | { "-fshort-enums", |
1255 | N_("Use the smallest fitting integer to hold enums") }, | |
b8468bc7 | 1256 | { "-fno-short-enums", "" }, |
a6371940 ZW |
1257 | { "-fshort-wchar", |
1258 | N_("Override the underlying type for wchar_t to `unsigned short'") }, | |
12a39b12 | 1259 | { "-fno-short-wchar", "" }, |
b8468bc7 | 1260 | |
a6371940 ZW |
1261 | { "-Wall", |
1262 | N_("Enable most warning messages") }, | |
b8468bc7 | 1263 | { "-Wbad-function-cast", |
a6371940 | 1264 | N_("Warn about casting functions to incompatible types") }, |
b8468bc7 | 1265 | { "-Wno-bad-function-cast", "" }, |
0ca3fb0a | 1266 | { "-Wno-missing-noreturn", "" }, |
74ff4629 | 1267 | { "-Wmissing-format-attribute", |
a6371940 | 1268 | N_("Warn about functions which might be candidates for format attributes") }, |
74ff4629 | 1269 | { "-Wno-missing-format-attribute", "" }, |
a6371940 ZW |
1270 | { "-Wcast-qual", |
1271 | N_("Warn about casts which discard qualifiers") }, | |
b8468bc7 | 1272 | { "-Wno-cast-qual", "" }, |
a6371940 ZW |
1273 | { "-Wchar-subscripts", |
1274 | N_("Warn about subscripts whose type is 'char'") }, | |
b8468bc7 | 1275 | { "-Wno-char-subscripts", "" }, |
a6371940 ZW |
1276 | { "-Wcomment", |
1277 | N_("Warn if nested comments are detected") }, | |
c84e2712 | 1278 | { "-Wno-comment", "" }, |
a6371940 ZW |
1279 | { "-Wcomments", |
1280 | N_("Warn if nested comments are detected") }, | |
c84e2712 | 1281 | { "-Wno-comments", "" }, |
a6371940 ZW |
1282 | { "-Wconversion", |
1283 | N_("Warn about possibly confusing type conversions") }, | |
b8468bc7 | 1284 | { "-Wno-conversion", "" }, |
a6371940 ZW |
1285 | { "-Wformat", |
1286 | N_("Warn about printf/scanf/strftime/strfmon format anomalies") }, | |
b8468bc7 | 1287 | { "-Wno-format", "" }, |
4d808927 JM |
1288 | { "-Wformat-y2k", "" }, |
1289 | { "-Wno-format-y2k", | |
a6371940 | 1290 | N_("Don't warn about strftime formats yielding 2 digit years") }, |
4d808927 JM |
1291 | { "-Wformat-extra-args", "" }, |
1292 | { "-Wno-format-extra-args", | |
a6371940 ZW |
1293 | N_("Don't warn about too many arguments to format functions") }, |
1294 | { "-Wformat-nonliteral", | |
1295 | N_("Warn about non-string-literal format strings") }, | |
4d808927 | 1296 | { "-Wno-format-nonliteral", "" }, |
c907e684 | 1297 | { "-Wformat-security", |
a6371940 | 1298 | N_("Warn about possible security problems with format functions") }, |
c907e684 | 1299 | { "-Wno-format-security", "" }, |
b8468bc7 | 1300 | { "-Wimplicit-function-declaration", |
a6371940 | 1301 | N_("Warn about implicit function declarations") }, |
b8468bc7 NC |
1302 | { "-Wno-implicit-function-declaration", "" }, |
1303 | { "-Werror-implicit-function-declaration", "" }, | |
a6371940 ZW |
1304 | { "-Wimplicit-int", |
1305 | N_("Warn when a declaration does not specify a type") }, | |
b8468bc7 NC |
1306 | { "-Wno-implicit-int", "" }, |
1307 | { "-Wimplicit", "" }, | |
1308 | { "-Wno-implicit", "" }, | |
a6371940 ZW |
1309 | { "-Wimport", |
1310 | N_("Warn about the use of the #import directive") }, | |
b8468bc7 NC |
1311 | { "-Wno-import", "" }, |
1312 | { "-Wlong-long","" }, | |
a6371940 ZW |
1313 | { "-Wno-long-long", |
1314 | N_("Do not warn about using 'long long' when -pedantic") }, | |
1315 | { "-Wmain", | |
1316 | N_("Warn about suspicious declarations of main") }, | |
b8468bc7 NC |
1317 | { "-Wno-main", "" }, |
1318 | { "-Wmissing-braces", | |
a6371940 | 1319 | N_("Warn about possibly missing braces around initialisers") }, |
b8468bc7 NC |
1320 | { "-Wno-missing-braces", "" }, |
1321 | { "-Wmissing-declarations", | |
a6371940 | 1322 | N_("Warn about global funcs without previous declarations") }, |
b8468bc7 | 1323 | { "-Wno-missing-declarations", "" }, |
a6371940 ZW |
1324 | { "-Wmissing-prototypes", |
1325 | N_("Warn about global funcs without prototypes") }, | |
b8468bc7 | 1326 | { "-Wno-missing-prototypes", "" }, |
a6371940 ZW |
1327 | { "-Wmultichar", |
1328 | N_("Warn about use of multicharacter literals") }, | |
b8468bc7 | 1329 | { "-Wno-multichar", "" }, |
a6371940 ZW |
1330 | { "-Wnested-externs", |
1331 | N_("Warn about externs not at file scope level") }, | |
b8468bc7 | 1332 | { "-Wno-nested-externs", "" }, |
a6371940 ZW |
1333 | { "-Wparentheses", |
1334 | N_("Warn about possible missing parentheses") }, | |
b8468bc7 | 1335 | { "-Wno-parentheses", "" }, |
bb58bec5 | 1336 | { "-Wsequence-point", |
a6371940 | 1337 | N_("Warn about possible violations of sequence point rules") }, |
bb58bec5 | 1338 | { "-Wno-sequence-point", "" }, |
a6371940 ZW |
1339 | { "-Wpointer-arith", |
1340 | N_("Warn about function pointer arithmetic") }, | |
b8468bc7 NC |
1341 | { "-Wno-pointer-arith", "" }, |
1342 | { "-Wredundant-decls", | |
a6371940 | 1343 | N_("Warn about multiple declarations of the same object") }, |
b8468bc7 | 1344 | { "-Wno-redundant-decls", "" }, |
a6371940 ZW |
1345 | { "-Wsign-compare", |
1346 | N_("Warn about signed/unsigned comparisons") }, | |
b8468bc7 | 1347 | { "-Wno-sign-compare", "" }, |
a6371940 ZW |
1348 | { "-Wfloat-equal", |
1349 | N_("Warn about testing equality of floating point numbers") }, | |
b843d210 | 1350 | { "-Wno-float-equal", "" }, |
a6371940 ZW |
1351 | { "-Wunknown-pragmas", |
1352 | N_("Warn about unrecognized pragmas") }, | |
b8468bc7 | 1353 | { "-Wno-unknown-pragmas", "" }, |
a6371940 ZW |
1354 | { "-Wstrict-prototypes", |
1355 | N_("Warn about non-prototyped function decls") }, | |
b8468bc7 | 1356 | { "-Wno-strict-prototypes", "" }, |
a6371940 ZW |
1357 | { "-Wtraditional", |
1358 | N_("Warn about constructs whose meaning change in ISO C") }, | |
b8468bc7 | 1359 | { "-Wno-traditional", "" }, |
a6371940 ZW |
1360 | { "-Wtrigraphs", |
1361 | N_("Warn when trigraphs are encountered") }, | |
b8468bc7 NC |
1362 | { "-Wno-trigraphs", "" }, |
1363 | { "-Wundef", "" }, | |
1364 | { "-Wno-undef", "" }, | |
a6371940 ZW |
1365 | { "-Wwrite-strings", |
1366 | N_("Mark strings as 'const char *'") }, | |
b8468bc7 | 1367 | { "-Wno-write-strings", "" }, |
854a97f0 | 1368 | |
b8468bc7 | 1369 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, |
854a97f0 | 1370 | |
2a95de17 | 1371 | #include "options.h" |
854a97f0 | 1372 | |
b99933c7 | 1373 | }; |
b8468bc7 NC |
1374 | |
1375 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1376 | and which bits in `target_switches' it should set or clear. | |
1377 | If VALUE is positive, it is bits to set. | |
1378 | If VALUE is negative, -VALUE is bits to clear. | |
1379 | (The sign bit is not used so there is no confusion.) */ | |
1380 | ||
1381 | struct | |
1382 | { | |
854a97f0 KH |
1383 | const char *name; |
1384 | int value; | |
1385 | const char *description; | |
b8468bc7 NC |
1386 | } |
1387 | target_switches [] = TARGET_SWITCHES; | |
1388 | ||
1389 | /* This table is similar, but allows the switch to have a value. */ | |
1390 | ||
1391 | #ifdef TARGET_OPTIONS | |
1392 | struct | |
1393 | { | |
854a97f0 KH |
1394 | const char *prefix; |
1395 | const char **variable; | |
1396 | const char *description; | |
b8468bc7 NC |
1397 | } |
1398 | target_options [] = TARGET_OPTIONS; | |
1399 | #endif | |
4291d9c8 | 1400 | \f |
854a97f0 | 1401 | /* Options controlling warnings. */ |
4291d9c8 RS |
1402 | |
1403 | /* Don't print warning messages. -w. */ | |
1404 | ||
1405 | int inhibit_warnings = 0; | |
1406 | ||
317639a8 BC |
1407 | /* Don't suppress warnings from system headers. -Wsystem-headers. */ |
1408 | ||
1409 | int warn_system_headers = 0; | |
1410 | ||
4291d9c8 RS |
1411 | /* Print various extra warnings. -W. */ |
1412 | ||
1413 | int extra_warnings = 0; | |
1414 | ||
1415 | /* Treat warnings as errors. -Werror. */ | |
1416 | ||
1417 | int warnings_are_errors = 0; | |
1418 | ||
078721e1 | 1419 | /* Nonzero to warn about unused variables, functions et.al. */ |
4291d9c8 | 1420 | |
078721e1 AC |
1421 | int warn_unused_function; |
1422 | int warn_unused_label; | |
1423 | int warn_unused_parameter; | |
1424 | int warn_unused_variable; | |
1425 | int warn_unused_value; | |
1426 | ||
1427 | void | |
1428 | set_Wunused (setting) | |
1429 | int setting; | |
1430 | { | |
1431 | warn_unused_function = setting; | |
1432 | warn_unused_label = setting; | |
1433 | /* Unused function parameter warnings are reported when either ``-W | |
1434 | -Wunused'' or ``-Wunused-parameter'' is specified. Differentiate | |
854a97f0 | 1435 | -Wunused by setting WARN_UNUSED_PARAMETER to -1. */ |
078721e1 AC |
1436 | if (!setting) |
1437 | warn_unused_parameter = 0; | |
1438 | else if (!warn_unused_parameter) | |
1439 | warn_unused_parameter = -1; | |
1440 | warn_unused_variable = setting; | |
1441 | warn_unused_value = setting; | |
1442 | } | |
4291d9c8 | 1443 | |
312f6255 GK |
1444 | /* Nonzero to warn about code which is never reached. */ |
1445 | ||
1446 | int warn_notreached; | |
1447 | ||
4291d9c8 RS |
1448 | /* Nonzero to warn about variables used before they are initialized. */ |
1449 | ||
1450 | int warn_uninitialized; | |
1451 | ||
1452 | /* Nonzero means warn about all declarations which shadow others. */ | |
1453 | ||
1454 | int warn_shadow; | |
1455 | ||
1456 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
1457 | ||
1458 | int warn_switch; | |
1459 | ||
1460 | /* Nonzero means warn about function definitions that default the return type | |
1461 | or that use a null return and have a return-type other than void. */ | |
1462 | ||
1463 | int warn_return_type; | |
1464 | ||
1465 | /* Nonzero means warn about pointer casts that increase the required | |
1466 | alignment of the target type (and might therefore lead to a crash | |
1467 | due to a misaligned access). */ | |
1468 | ||
1469 | int warn_cast_align; | |
1470 | ||
b51e9c62 RK |
1471 | /* Nonzero means warn about any objects definitions whose size is larger |
1472 | than N bytes. Also want about function definitions whose returned | |
1473 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
854a97f0 | 1474 | |
b51e9c62 | 1475 | int warn_larger_than; |
4559fd9e | 1476 | HOST_WIDE_INT larger_than_size; |
4291d9c8 RS |
1477 | |
1478 | /* Nonzero means warn if inline function is too large. */ | |
1479 | ||
1480 | int warn_inline; | |
1481 | ||
1482 | /* Warn if a function returns an aggregate, | |
1483 | since there are often incompatible calling conventions for doing this. */ | |
1484 | ||
1485 | int warn_aggregate_return; | |
1486 | ||
3c12fcc2 GM |
1487 | /* Warn if packed attribute on struct is unnecessary and inefficient. */ |
1488 | ||
1489 | int warn_packed; | |
1490 | ||
1491 | /* Warn when gcc pads a structure to an alignment boundary. */ | |
1492 | ||
1493 | int warn_padded; | |
1494 | ||
18424ae1 BL |
1495 | /* Warn when an optimization pass is disabled. */ |
1496 | ||
1497 | int warn_disabled_optimization; | |
1498 | ||
b313a0fe RH |
1499 | /* Warn about functions which might be candidates for attribute noreturn. */ |
1500 | ||
1501 | int warn_missing_noreturn; | |
1502 | ||
4291d9c8 RS |
1503 | /* Likewise for -W. */ |
1504 | ||
b8468bc7 | 1505 | lang_independent_options W_options[] = |
4291d9c8 | 1506 | { |
a6371940 ZW |
1507 | {"unused-function", &warn_unused_function, 1, |
1508 | N_("Warn when a function is unused") }, | |
1509 | {"unused-label", &warn_unused_label, 1, | |
1510 | N_("Warn when a label is unused") }, | |
1511 | {"unused-parameter", &warn_unused_parameter, 1, | |
1512 | N_("Warn when a function parameter is unused") }, | |
1513 | {"unused-variable", &warn_unused_variable, 1, | |
1514 | N_("Warn when a variable is unused") }, | |
1515 | {"unused-value", &warn_unused_value, 1, | |
1516 | N_("Warn when an expression value is unused") }, | |
1517 | {"system-headers", &warn_system_headers, 1, | |
1518 | N_("Do not suppress warnings from system headers") }, | |
1519 | {"error", &warnings_are_errors, 1, | |
1520 | N_("Treat all warnings as errors") }, | |
1521 | {"shadow", &warn_shadow, 1, | |
1522 | N_("Warn when one local variable shadows another") }, | |
b8468bc7 | 1523 | {"switch", &warn_switch, 1, |
a6371940 | 1524 | N_("Warn about enumerated switches missing a specific case") }, |
b8468bc7 | 1525 | {"aggregate-return", &warn_aggregate_return, 1, |
a6371940 | 1526 | N_("Warn about returning structures, unions or arrays") }, |
b8468bc7 | 1527 | {"cast-align", &warn_cast_align, 1, |
a6371940 | 1528 | N_("Warn about pointer casts which increase alignment") }, |
854a97f0 | 1529 | {"unreachable-code", &warn_notreached, 1, |
a6371940 | 1530 | N_("Warn about code that will never be executed") }, |
b8468bc7 | 1531 | {"uninitialized", &warn_uninitialized, 1, |
a6371940 | 1532 | N_("Warn about unitialized automatic variables") }, |
b8468bc7 | 1533 | {"inline", &warn_inline, 1, |
a6371940 | 1534 | N_("Warn when an inlined function cannot be inlined") }, |
3c12fcc2 | 1535 | {"packed", &warn_packed, 1, |
a6371940 | 1536 | N_("Warn when the packed attribute has no effect on struct layout") }, |
3c12fcc2 | 1537 | {"padded", &warn_padded, 1, |
a6371940 | 1538 | N_("Warn when padding is required to align struct members") }, |
18424ae1 | 1539 | {"disabled-optimization", &warn_disabled_optimization, 1, |
a6371940 | 1540 | N_("Warn when an optimization pass is disabled") }, |
21c7361e | 1541 | {"missing-noreturn", &warn_missing_noreturn, 1, |
a6371940 | 1542 | N_("Warn about functions which might be candidates for attribute noreturn") } |
4291d9c8 | 1543 | }; |
de6c5979 BL |
1544 | |
1545 | /* The following routines are useful in setting all the flags that | |
1546 | -ffast-math and -fno-fast-math imply. */ | |
1547 | ||
1548 | void | |
1549 | set_fast_math_flags () | |
1550 | { | |
1551 | flag_trapping_math = 0; | |
1552 | flag_unsafe_math_optimizations = 1; | |
1553 | flag_errno_math = 0; | |
1554 | } | |
1555 | ||
1556 | void | |
1557 | set_no_fast_math_flags () | |
1558 | { | |
1559 | flag_trapping_math = 1; | |
1560 | flag_unsafe_math_optimizations = 0; | |
1561 | flag_errno_math = 1; | |
1562 | } | |
1563 | ||
4291d9c8 RS |
1564 | \f |
1565 | /* Output files for assembler code (real compiler output) | |
1566 | and debugging dumps. */ | |
1567 | ||
1568 | FILE *asm_out_file; | |
1569 | FILE *aux_info_file; | |
032713aa | 1570 | FILE *rtl_dump_file = NULL; |
4291d9c8 | 1571 | |
132e01b1 TP |
1572 | /* Decode the string P as an integral parameter. |
1573 | If the string is indeed an integer return its numeric value else | |
192babfd | 1574 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
854a97f0 KH |
1575 | If PNAME is zero just return DEFVAL, do not call error. */ |
1576 | ||
132e01b1 TP |
1577 | int |
1578 | read_integral_parameter (p, pname, defval) | |
192babfd TP |
1579 | const char *p; |
1580 | const char *pname; | |
1581 | const int defval; | |
132e01b1 | 1582 | { |
192babfd | 1583 | const char *endp = p; |
132e01b1 TP |
1584 | |
1585 | while (*endp) | |
1586 | { | |
1587 | if (*endp >= '0' && *endp <= '9') | |
1588 | endp++; | |
1589 | else | |
192babfd TP |
1590 | break; |
1591 | } | |
1592 | ||
1593 | if (*endp != 0) | |
1594 | { | |
1595 | if (pname != 0) | |
1596 | error ("Invalid option `%s'", pname); | |
1597 | return defval; | |
132e01b1 TP |
1598 | } |
1599 | ||
1600 | return atoi (p); | |
1601 | } | |
1602 | ||
4291d9c8 | 1603 | \f |
4291d9c8 RS |
1604 | /* This is the default decl_printable_name function. */ |
1605 | ||
5f8ded66 | 1606 | static const char * |
a1d7ffe3 | 1607 | decl_name (decl, verbosity) |
4291d9c8 | 1608 | tree decl; |
114791ea | 1609 | int verbosity ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1610 | { |
1611 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1612 | } | |
1613 | \f | |
4291d9c8 RS |
1614 | |
1615 | /* This calls abort and is used to avoid problems when abort if a macro. | |
1616 | It is used when we need to pass the address of abort. */ | |
1617 | ||
1618 | void | |
1619 | do_abort () | |
1620 | { | |
1621 | abort (); | |
1622 | } | |
1623 | ||
1624 | /* When `malloc.c' is compiled with `rcheck' defined, | |
1625 | it calls this function to report clobberage. */ | |
1626 | ||
1627 | void | |
1628 | botch (s) | |
854a97f0 | 1629 | const char *s ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1630 | { |
1631 | abort (); | |
1632 | } | |
4291d9c8 RS |
1633 | \f |
1634 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
1635 | if X is a power of 2. Otherwise, returns -1. |
1636 | ||
1637 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1638 | |
1639 | int | |
37366632 RK |
1640 | exact_log2_wide (x) |
1641 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1642 | { |
1643 | register int log = 0; | |
1644 | /* Test for 0 or a power of 2. */ | |
1645 | if (x == 0 || x != (x & -x)) | |
1646 | return -1; | |
1647 | while ((x >>= 1) != 0) | |
1648 | log++; | |
1649 | return log; | |
1650 | } | |
1651 | ||
1652 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1653 | If X is 0, return -1. |
1654 | ||
1655 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1656 | |
1657 | int | |
37366632 RK |
1658 | floor_log2_wide (x) |
1659 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1660 | { |
1661 | register int log = -1; | |
1662 | while (x != 0) | |
1663 | log++, | |
1664 | x >>= 1; | |
1665 | return log; | |
1666 | } | |
1667 | ||
3bbfa296 | 1668 | static int float_handler_set; |
4291d9c8 RS |
1669 | int float_handled; |
1670 | jmp_buf float_handler; | |
1671 | ||
3bbfa296 RK |
1672 | /* Signals actually come here. */ |
1673 | ||
1674 | static void | |
1675 | float_signal (signo) | |
1676 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 1677 | int signo ATTRIBUTE_UNUSED; |
3bbfa296 RK |
1678 | { |
1679 | if (float_handled == 0) | |
a7023245 | 1680 | crash_signal (signo); |
3bbfa296 | 1681 | float_handled = 0; |
4000fada ZW |
1682 | |
1683 | /* On System-V derived systems, we must reinstall the signal handler. | |
1684 | This is harmless on BSD-derived systems. */ | |
3bbfa296 RK |
1685 | signal (SIGFPE, float_signal); |
1686 | longjmp (float_handler, 1); | |
1687 | } | |
1688 | ||
4291d9c8 RS |
1689 | /* Specify where to longjmp to when a floating arithmetic error happens. |
1690 | If HANDLER is 0, it means don't handle the errors any more. */ | |
1691 | ||
94aca342 | 1692 | static void |
4291d9c8 RS |
1693 | set_float_handler (handler) |
1694 | jmp_buf handler; | |
1695 | { | |
1696 | float_handled = (handler != 0); | |
1697 | if (handler) | |
56b89084 | 1698 | memcpy (float_handler, handler, sizeof (float_handler)); |
3bbfa296 RK |
1699 | |
1700 | if (float_handled && ! float_handler_set) | |
1701 | { | |
1702 | signal (SIGFPE, float_signal); | |
1703 | float_handler_set = 1; | |
1704 | } | |
4291d9c8 RS |
1705 | } |
1706 | ||
1a87eea2 KG |
1707 | /* This is a wrapper function for code which might elicit an |
1708 | arithmetic exception. That code should be passed in as a function | |
1709 | pointer FN, and one argument DATA. DATA is usually a struct which | |
1710 | contains the real input and output for function FN. This function | |
1711 | returns 0 (failure) if longjmp was called (i.e. an exception | |
854a97f0 | 1712 | occured.) It returns 1 (success) otherwise. */ |
1a87eea2 KG |
1713 | |
1714 | int | |
1715 | do_float_handler (fn, data) | |
58782098 | 1716 | void (*fn) PARAMS ((PTR)); |
1a87eea2 KG |
1717 | PTR data; |
1718 | { | |
1719 | jmp_buf buf; | |
1720 | ||
1721 | if (setjmp (buf)) | |
1722 | { | |
854a97f0 KH |
1723 | /* We got here via longjmp () caused by an exception in function |
1724 | fn (). */ | |
1a87eea2 KG |
1725 | set_float_handler (NULL); |
1726 | return 0; | |
1727 | } | |
1728 | ||
1729 | set_float_handler (buf); | |
1730 | (*fn)(data); | |
1731 | set_float_handler (NULL); | |
1732 | return 1; | |
1733 | } | |
1734 | ||
a7023245 ZW |
1735 | /* Handler for fatal signals, such as SIGSEGV. These are transformed |
1736 | into ICE messages, which is much more user friendly. */ | |
4291d9c8 RS |
1737 | |
1738 | static void | |
a7023245 | 1739 | crash_signal (signo) |
a7023245 | 1740 | int signo; |
4291d9c8 | 1741 | { |
400500c4 | 1742 | internal_error ("Internal error: %s", strsignal (signo)); |
4291d9c8 RS |
1743 | } |
1744 | ||
1745 | /* Strip off a legitimate source ending from the input string NAME of | |
c62bdc79 | 1746 | length LEN. Rather than having to know the names used by all of |
2290e0ec | 1747 | our front ends, we strip off an ending of a period followed by |
854a97f0 | 1748 | up to five characters. (Java uses ".class".) */ |
4291d9c8 RS |
1749 | |
1750 | void | |
1751 | strip_off_ending (name, len) | |
1752 | char *name; | |
1753 | int len; | |
1754 | { | |
2290e0ec PB |
1755 | int i; |
1756 | for (i = 2; i < 6 && len > i; i++) | |
1757 | { | |
1758 | if (name[len - i] == '.') | |
1759 | { | |
1760 | name[len - i] = '\0'; | |
1761 | break; | |
1762 | } | |
1763 | } | |
4291d9c8 RS |
1764 | } |
1765 | ||
7dce5088 | 1766 | /* Output a quoted string. */ |
0f41302f | 1767 | |
7dce5088 PE |
1768 | void |
1769 | output_quoted_string (asm_file, string) | |
1770 | FILE *asm_file; | |
87e11268 | 1771 | const char *string; |
7dce5088 | 1772 | { |
e9a25f70 JL |
1773 | #ifdef OUTPUT_QUOTED_STRING |
1774 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1775 | #else | |
7dce5088 PE |
1776 | char c; |
1777 | ||
1778 | putc ('\"', asm_file); | |
1779 | while ((c = *string++) != 0) | |
1780 | { | |
1781 | if (c == '\"' || c == '\\') | |
1782 | putc ('\\', asm_file); | |
1783 | putc (c, asm_file); | |
1784 | } | |
1785 | putc ('\"', asm_file); | |
e9a25f70 | 1786 | #endif |
7dce5088 PE |
1787 | } |
1788 | ||
4291d9c8 RS |
1789 | /* Output a file name in the form wanted by System V. */ |
1790 | ||
1791 | void | |
1792 | output_file_directive (asm_file, input_name) | |
1793 | FILE *asm_file; | |
87e11268 | 1794 | const char *input_name; |
4291d9c8 RS |
1795 | { |
1796 | int len = strlen (input_name); | |
87e11268 | 1797 | const char *na = input_name + len; |
4291d9c8 RS |
1798 | |
1799 | /* NA gets INPUT_NAME sans directory names. */ | |
1800 | while (na > input_name) | |
1801 | { | |
1a8bb3dd JL |
1802 | if (IS_DIR_SEPARATOR (na[-1])) |
1803 | break; | |
4291d9c8 RS |
1804 | na--; |
1805 | } | |
1806 | ||
1807 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1808 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1809 | #else | |
1810 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1811 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1812 | #else | |
7dce5088 PE |
1813 | fprintf (asm_file, "\t.file\t"); |
1814 | output_quoted_string (asm_file, na); | |
1815 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1816 | #endif |
1817 | #endif | |
1818 | } | |
1819 | \f | |
61098249 RH |
1820 | /* Routine to open a dump file. Return true if the dump file is enabled. */ |
1821 | ||
1822 | static int | |
1823 | open_dump_file (index, decl) | |
1824 | enum dump_file_index index; | |
1825 | tree decl; | |
032713aa | 1826 | { |
61098249 RH |
1827 | char *dump_name; |
1828 | const char *open_arg; | |
1829 | char seq[16]; | |
1830 | ||
1831 | if (! dump_file[index].enabled) | |
1832 | return 0; | |
0f41302f | 1833 | |
2a9a326b AS |
1834 | timevar_push (TV_DUMP); |
1835 | if (rtl_dump_file != NULL) | |
1836 | fclose (rtl_dump_file); | |
854a97f0 | 1837 | |
2a9a326b | 1838 | sprintf (seq, ".%02d.", index); |
61098249 | 1839 | |
2a9a326b AS |
1840 | if (! dump_file[index].initialized) |
1841 | { | |
1842 | /* If we've not initialized the files, do so now. */ | |
1843 | if (graph_dump_format != no_graph | |
1844 | && dump_file[index].graph_dump_p) | |
1845 | { | |
1846 | dump_name = concat (seq, dump_file[index].extension, NULL); | |
1847 | clean_graph_dump_file (dump_base_name, dump_name); | |
1848 | free (dump_name); | |
1849 | } | |
1850 | dump_file[index].initialized = 1; | |
1851 | open_arg = "w"; | |
1852 | } | |
1853 | else | |
1854 | open_arg = "a"; | |
61098249 | 1855 | |
2a9a326b AS |
1856 | dump_name = concat (dump_base_name, seq, |
1857 | dump_file[index].extension, NULL); | |
61098249 | 1858 | |
2a9a326b AS |
1859 | rtl_dump_file = fopen (dump_name, open_arg); |
1860 | if (rtl_dump_file == NULL) | |
400500c4 | 1861 | fatal_io_error ("can't open %s", dump_name); |
854a97f0 | 1862 | |
2a9a326b | 1863 | free (dump_name); |
032713aa | 1864 | |
2a9a326b AS |
1865 | if (decl) |
1866 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", | |
1867 | decl_printable_name (decl, 2)); | |
1868 | ||
1869 | timevar_pop (TV_DUMP); | |
61098249 | 1870 | return 1; |
032713aa NC |
1871 | } |
1872 | ||
1873 | /* Routine to close a dump file. */ | |
61098249 | 1874 | |
032713aa | 1875 | static void |
61098249 RH |
1876 | close_dump_file (index, func, insns) |
1877 | enum dump_file_index index; | |
58782098 | 1878 | void (*func) PARAMS ((FILE *, rtx)); |
854a97f0 | 1879 | rtx insns; |
032713aa | 1880 | { |
61098249 RH |
1881 | if (! rtl_dump_file) |
1882 | return; | |
1883 | ||
2a9a326b AS |
1884 | timevar_push (TV_DUMP); |
1885 | if (insns | |
1886 | && graph_dump_format != no_graph | |
1887 | && dump_file[index].graph_dump_p) | |
1888 | { | |
1889 | char seq[16]; | |
1890 | char *suffix; | |
61098249 | 1891 | |
2a9a326b AS |
1892 | sprintf (seq, ".%02d.", index); |
1893 | suffix = concat (seq, dump_file[index].extension, NULL); | |
1894 | print_rtl_graph_with_bb (dump_base_name, suffix, insns); | |
1895 | free (suffix); | |
1896 | } | |
61098249 | 1897 | |
2a9a326b AS |
1898 | if (func && insns) |
1899 | func (rtl_dump_file, insns); | |
854a97f0 | 1900 | |
2a9a326b AS |
1901 | fflush (rtl_dump_file); |
1902 | fclose (rtl_dump_file); | |
854a97f0 | 1903 | |
2a9a326b AS |
1904 | rtl_dump_file = NULL; |
1905 | timevar_pop (TV_DUMP); | |
dfe1a916 DE |
1906 | } |
1907 | ||
32291f94 MM |
1908 | /* Do any final processing required for the declarations in VEC, of |
1909 | which there are LEN. We write out inline functions and variables | |
1910 | that have been deferred until this point, but which are required. | |
854a97f0 KH |
1911 | Returns non-zero if anything was put out. */ |
1912 | ||
32291f94 MM |
1913 | int |
1914 | wrapup_global_declarations (vec, len) | |
1915 | tree *vec; | |
1916 | int len; | |
1917 | { | |
1918 | tree decl; | |
1919 | int i; | |
1920 | int reconsider; | |
1921 | int output_something = 0; | |
1922 | ||
1923 | for (i = 0; i < len; i++) | |
1924 | { | |
1925 | decl = vec[i]; | |
854a97f0 | 1926 | |
32291f94 MM |
1927 | /* We're not deferring this any longer. */ |
1928 | DECL_DEFER_OUTPUT (decl) = 0; | |
854a97f0 | 1929 | |
32291f94 MM |
1930 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 |
1931 | && incomplete_decl_finalize_hook != 0) | |
1932 | (*incomplete_decl_finalize_hook) (decl); | |
1933 | } | |
1934 | ||
1935 | /* Now emit any global variables or functions that we have been | |
1936 | putting off. We need to loop in case one of the things emitted | |
1937 | here references another one which comes earlier in the list. */ | |
1938 | do | |
1939 | { | |
1940 | reconsider = 0; | |
1941 | for (i = 0; i < len; i++) | |
1942 | { | |
1943 | decl = vec[i]; | |
1944 | ||
1945 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1946 | continue; | |
1947 | ||
1948 | /* Don't write out static consts, unless we still need them. | |
1949 | ||
1950 | We also keep static consts if not optimizing (for debugging), | |
1951 | unless the user specified -fno-keep-static-consts. | |
1952 | ??? They might be better written into the debug information. | |
1953 | This is possible when using DWARF. | |
1954 | ||
1955 | A language processor that wants static constants to be always | |
1956 | written out (even if it is not used) is responsible for | |
1957 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
1958 | calls rest_of_decl_compilation from finish_decl. | |
1959 | One motivation for this is that is conventional in some | |
1960 | environments to write things like: | |
1961 | static const char rcsid[] = "... version string ..."; | |
1962 | intending to force the string to be in the executable. | |
1963 | ||
1964 | A language processor that would prefer to have unneeded | |
1965 | static constants "optimized away" would just defer writing | |
1966 | them out until here. E.g. C++ does this, because static | |
1967 | constants are often defined in header files. | |
1968 | ||
1969 | ??? A tempting alternative (for both C and C++) would be | |
1970 | to force a constant to be written if and only if it is | |
1971 | defined in a main file, as opposed to an include file. */ | |
1972 | ||
1973 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
8cf8d8a2 JM |
1974 | && (((! TREE_READONLY (decl) || TREE_PUBLIC (decl)) |
1975 | && !DECL_COMDAT (decl)) | |
21c7361e | 1976 | || (!optimize |
62136084 MM |
1977 | && flag_keep_static_consts |
1978 | && !DECL_ARTIFICIAL (decl)) | |
32291f94 MM |
1979 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
1980 | { | |
1981 | reconsider = 1; | |
9714cf43 | 1982 | rest_of_decl_compilation (decl, NULL, 1, 1); |
32291f94 MM |
1983 | } |
1984 | ||
1985 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1986 | && DECL_INITIAL (decl) != 0 | |
1987 | && DECL_SAVED_INSNS (decl) != 0 | |
1988 | && (flag_keep_inline_functions | |
59182242 | 1989 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
1990 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
1991 | { | |
1992 | reconsider = 1; | |
32291f94 | 1993 | output_inline_function (decl); |
32291f94 MM |
1994 | } |
1995 | } | |
1996 | ||
1997 | if (reconsider) | |
1998 | output_something = 1; | |
1999 | } | |
2000 | while (reconsider); | |
2001 | ||
2002 | return output_something; | |
2003 | } | |
2004 | ||
2005 | /* Issue appropriate warnings for the global declarations in VEC (of | |
2006 | which there are LEN). Output debugging information for them. */ | |
854a97f0 | 2007 | |
32291f94 MM |
2008 | void |
2009 | check_global_declarations (vec, len) | |
2010 | tree *vec; | |
2011 | int len; | |
2012 | { | |
2013 | tree decl; | |
2014 | int i; | |
2015 | ||
2016 | for (i = 0; i < len; i++) | |
2017 | { | |
2018 | decl = vec[i]; | |
2019 | ||
2020 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
2021 | && ! TREE_ASM_WRITTEN (decl)) | |
2022 | /* Cancel the RTL for this decl so that, if debugging info | |
2023 | output for global variables is still to come, | |
2024 | this one will be omitted. */ | |
19e7881c | 2025 | SET_DECL_RTL (decl, NULL_RTX); |
32291f94 MM |
2026 | |
2027 | /* Warn about any function | |
2028 | declared static but not defined. | |
2029 | We don't warn about variables, | |
2030 | because many programs have static variables | |
2031 | that exist only to get some text into the object file. */ | |
2032 | if (TREE_CODE (decl) == FUNCTION_DECL | |
078721e1 | 2033 | && (warn_unused_function |
32291f94 MM |
2034 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
2035 | && DECL_INITIAL (decl) == 0 | |
2036 | && DECL_EXTERNAL (decl) | |
2037 | && ! DECL_ARTIFICIAL (decl) | |
2038 | && ! TREE_PUBLIC (decl)) | |
2039 | { | |
2040 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
2041 | pedwarn_with_decl (decl, | |
2042 | "`%s' used but never defined"); | |
2043 | else | |
2044 | warning_with_decl (decl, | |
2045 | "`%s' declared `static' but never defined"); | |
2046 | /* This symbol is effectively an "extern" declaration now. */ | |
2047 | TREE_PUBLIC (decl) = 1; | |
2048 | assemble_external (decl); | |
2049 | } | |
2050 | ||
2051 | /* Warn about static fns or vars defined but not used, | |
2052 | but not about inline functions or static consts | |
2053 | since defining those in header files is normal practice. */ | |
078721e1 AC |
2054 | if (((warn_unused_function |
2055 | && TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) | |
2056 | || (warn_unused_variable | |
2057 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
32291f94 MM |
2058 | && ! DECL_IN_SYSTEM_HEADER (decl) |
2059 | && ! DECL_EXTERNAL (decl) | |
2060 | && ! TREE_PUBLIC (decl) | |
2061 | && ! TREE_USED (decl) | |
2062 | && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl)) | |
2063 | /* The TREE_USED bit for file-scope decls | |
2064 | is kept in the identifier, to handle multiple | |
2065 | external decls in different scopes. */ | |
2066 | && ! TREE_USED (DECL_NAME (decl))) | |
2067 | warning_with_decl (decl, "`%s' defined but not used"); | |
2068 | ||
2a9a326b | 2069 | timevar_push (TV_SYMOUT); |
2b85879e | 2070 | (*debug_hooks->global_decl) (decl); |
2a9a326b | 2071 | timevar_pop (TV_SYMOUT); |
32291f94 MM |
2072 | } |
2073 | } | |
032713aa | 2074 | |
68723fae MM |
2075 | /* Save the current INPUT_FILENAME and LINENO on the top entry in the |
2076 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the | |
2077 | INPUT_FILENAME and LINENO accordingly. */ | |
2078 | ||
2079 | void | |
2080 | push_srcloc (file, line) | |
3b304f5b | 2081 | const char *file; |
68723fae MM |
2082 | int line; |
2083 | { | |
2084 | struct file_stack *fs; | |
2085 | ||
2086 | if (input_file_stack) | |
2087 | { | |
2088 | input_file_stack->name = input_filename; | |
2089 | input_file_stack->line = lineno; | |
2090 | } | |
2091 | ||
2092 | fs = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2093 | fs->name = input_filename = file; | |
2094 | fs->line = lineno = line; | |
2095 | fs->indent_level = 0; | |
2096 | fs->next = input_file_stack; | |
2097 | input_file_stack = fs; | |
2098 | input_file_stack_tick++; | |
2099 | } | |
2100 | ||
2101 | /* Pop the top entry off the stack of presently open source files. | |
2102 | Restore the INPUT_FILENAME and LINENO from the new topmost entry on | |
2103 | the stack. */ | |
2104 | ||
2105 | void | |
2106 | pop_srcloc () | |
2107 | { | |
2108 | struct file_stack *fs; | |
854a97f0 | 2109 | |
68723fae MM |
2110 | fs = input_file_stack; |
2111 | input_file_stack = fs->next; | |
2112 | free (fs); | |
2113 | input_file_stack_tick++; | |
ebc7f293 | 2114 | /* The initial source file is never popped. */ |
68723fae MM |
2115 | if (!input_file_stack) |
2116 | abort (); | |
2117 | input_filename = input_file_stack->name; | |
2118 | lineno = input_file_stack->line; | |
2119 | } | |
2120 | ||
4291d9c8 RS |
2121 | /* Compile an entire file of output from cpp, named NAME. |
2122 | Write a file of assembly output and various debugging dumps. */ | |
2123 | ||
2124 | static void | |
2125 | compile_file (name) | |
3b304f5b | 2126 | const char *name; |
4291d9c8 RS |
2127 | { |
2128 | tree globals; | |
4291d9c8 RS |
2129 | |
2130 | int name_specified = name != 0; | |
2131 | ||
2132 | if (dump_base_name == 0) | |
2133 | dump_base_name = name ? name : "gccdump"; | |
4291d9c8 | 2134 | |
fba0bfd4 ZW |
2135 | if (! quiet_flag) |
2136 | time_report = 1; | |
2137 | ||
2a9a326b | 2138 | /* Start timing total execution time. */ |
4291d9c8 | 2139 | |
2a9a326b AS |
2140 | init_timevar (); |
2141 | timevar_start (TV_TOTAL); | |
854a97f0 | 2142 | |
37ff4d28 JL |
2143 | /* Open assembler code output file. Do this even if -fsyntax-only is on, |
2144 | because then the driver will have provided the name of a temporary | |
2145 | file or bit bucket for us. */ | |
2146 | ||
1a02aff4 JL |
2147 | if (! name_specified && asm_file_name == 0) |
2148 | asm_out_file = stdout; | |
2149 | else | |
2150 | { | |
2151 | if (asm_file_name == 0) | |
2152 | { | |
2153 | int len = strlen (dump_base_name); | |
2154 | char *dumpname = (char *) xmalloc (len + 6); | |
2155 | memcpy (dumpname, dump_base_name, len + 1); | |
2156 | strip_off_ending (dumpname, len); | |
2157 | strcat (dumpname, ".s"); | |
2158 | asm_file_name = dumpname; | |
2159 | } | |
2160 | if (!strcmp (asm_file_name, "-")) | |
2161 | asm_out_file = stdout; | |
2162 | else | |
2163 | asm_out_file = fopen (asm_file_name, "w"); | |
2164 | if (asm_out_file == 0) | |
2165 | fatal_io_error ("can't open %s for writing", asm_file_name); | |
2166 | } | |
2167 | ||
4291d9c8 RS |
2168 | /* Initialize data in various passes. */ |
2169 | ||
2170 | init_obstacks (); | |
5c60e5c0 | 2171 | name = init_parse (name); |
4291d9c8 | 2172 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
0d332add | 2173 | || debug_info_level == DINFO_LEVEL_VERBOSE |
312f6255 GK |
2174 | || flag_test_coverage |
2175 | || warn_notreached); | |
7f21d440 | 2176 | init_regs (); |
3bdf5ad1 | 2177 | init_alias_once (); |
4291d9c8 | 2178 | init_decl_processing (); |
52a11cbf | 2179 | init_eh (); |
4291d9c8 RS |
2180 | init_optabs (); |
2181 | init_stmt (); | |
4291d9c8 RS |
2182 | init_loop (); |
2183 | init_reload (); | |
87ff9c8e | 2184 | init_function_once (); |
d7db6646 | 2185 | init_stor_layout_once (); |
76095e2f | 2186 | init_varasm_once (); |
232f749b | 2187 | init_EXPR_INSN_LIST_cache (); |
4291d9c8 | 2188 | |
49ad7cfa BS |
2189 | /* The following initialization functions need to generate rtl, so |
2190 | provide a dummy function context for them. */ | |
2191 | init_dummy_function_start (); | |
2192 | init_expmed (); | |
2193 | init_expr_once (); | |
4291d9c8 RS |
2194 | if (flag_caller_saves) |
2195 | init_caller_save (); | |
49ad7cfa | 2196 | expand_dummy_function_end (); |
4291d9c8 | 2197 | |
f246a305 RS |
2198 | /* If auxiliary info generation is desired, open the output file. |
2199 | This goes in the same directory as the source file--unlike | |
2200 | all the other output files. */ | |
4291d9c8 RS |
2201 | if (flag_gen_aux_info) |
2202 | { | |
4291d9c8 RS |
2203 | aux_info_file = fopen (aux_info_file_name, "w"); |
2204 | if (aux_info_file == 0) | |
400500c4 | 2205 | fatal_io_error ("can't open %s", aux_info_file_name); |
4291d9c8 RS |
2206 | } |
2207 | ||
f246a305 | 2208 | #ifdef IO_BUFFER_SIZE |
49009afd JL |
2209 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
2210 | _IOFBF, IO_BUFFER_SIZE); | |
f246a305 RS |
2211 | #endif |
2212 | ||
1f8f4a0b | 2213 | if (name != 0) |
a8a05998 | 2214 | name = ggc_strdup (name); |
296b4ed9 | 2215 | |
4291d9c8 RS |
2216 | input_filename = name; |
2217 | ||
18736654 | 2218 | /* Put an entry on the input file stack for the main input file. */ |
68723fae | 2219 | push_srcloc (input_filename, 0); |
18736654 | 2220 | |
4291d9c8 RS |
2221 | /* Perform language-specific initialization. |
2222 | This may set main_input_filename. */ | |
13c61421 NB |
2223 | if (lang_hooks.init) |
2224 | (*lang_hooks.init) (); | |
4291d9c8 RS |
2225 | |
2226 | /* If the input doesn't start with a #line, use the input name | |
2227 | as the official input file name. */ | |
2228 | if (main_input_filename == 0) | |
2229 | main_input_filename = name; | |
2230 | ||
1fe65c00 PB |
2231 | if (flag_syntax_only) |
2232 | { | |
2233 | write_symbols = NO_DEBUG; | |
2234 | profile_flag = 0; | |
2235 | profile_block_flag = 0; | |
2236 | } | |
2237 | else | |
2238 | { | |
448d17f9 | 2239 | #ifdef ASM_FILE_START |
1fe65c00 | 2240 | ASM_FILE_START (asm_out_file); |
448d17f9 | 2241 | #endif |
3d5cdd42 DE |
2242 | |
2243 | #ifdef ASM_COMMENT_START | |
1fe65c00 PB |
2244 | if (flag_verbose_asm) |
2245 | { | |
2246 | /* Print the list of options in effect. */ | |
2247 | print_version (asm_out_file, ASM_COMMENT_START); | |
2248 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
3d5cdd42 | 2249 | ASM_COMMENT_START, " ", "\n"); |
1fe65c00 PB |
2250 | /* Add a blank line here so it appears in assembler output but not |
2251 | screen output. */ | |
2252 | fprintf (asm_out_file, "\n"); | |
2253 | } | |
b93a436e | 2254 | #endif |
854a97f0 | 2255 | } /* ! flag_syntax_only */ |
d0d4af87 | 2256 | |
a51d908e NB |
2257 | /* Set up the debug hooks based on write_symbols. Default to doing |
2258 | nothing. */ | |
2259 | debug_hooks = &do_nothing_debug_hooks; | |
a5a42b92 NB |
2260 | #if defined(DBX_DEBUGGING_INFO) |
2261 | if (write_symbols == DBX_DEBUG) | |
a51d908e NB |
2262 | debug_hooks = &dbx_debug_hooks; |
2263 | #endif | |
a5a42b92 NB |
2264 | #if defined(XCOFF_DEBUGGING_INFO) |
2265 | if (write_symbols == XCOFF_DEBUG) | |
2266 | debug_hooks = &xcoff_debug_hooks; | |
2267 | #endif | |
a51d908e NB |
2268 | #ifdef SDB_DEBUGGING_INFO |
2269 | if (write_symbols == SDB_DEBUG) | |
2270 | debug_hooks = &sdb_debug_hooks; | |
2271 | #endif | |
2272 | #ifdef DWARF_DEBUGGING_INFO | |
2273 | if (write_symbols == DWARF_DEBUG) | |
2274 | debug_hooks = &dwarf_debug_hooks; | |
2275 | #endif | |
2276 | #ifdef DWARF2_DEBUGGING_INFO | |
2277 | if (write_symbols == DWARF2_DEBUG) | |
2278 | debug_hooks = &dwarf2_debug_hooks; | |
2279 | #endif | |
2280 | ||
7c262518 | 2281 | if (! targetm.have_named_sections) |
cf440348 | 2282 | { |
7c262518 RH |
2283 | if (flag_function_sections) |
2284 | { | |
2285 | warning ("-ffunction-sections not supported for this target."); | |
2286 | flag_function_sections = 0; | |
2287 | } | |
2288 | if (flag_data_sections) | |
2289 | { | |
2290 | warning ("-fdata-sections not supported for this target."); | |
2291 | flag_data_sections = 0; | |
2292 | } | |
257441db | 2293 | } |
cf440348 JL |
2294 | |
2295 | if (flag_function_sections | |
2296 | && (profile_flag || profile_block_flag)) | |
2297 | { | |
2298 | warning ("-ffunction-sections disabled; it makes profiling impossible."); | |
2299 | flag_function_sections = 0; | |
2300 | } | |
2301 | ||
1746404b | 2302 | #ifndef OBJECT_FORMAT_ELF |
cf440348 JL |
2303 | if (flag_function_sections && write_symbols != NO_DEBUG) |
2304 | warning ("-ffunction-sections may affect debugging on some targets."); | |
1746404b | 2305 | #endif |
cf440348 | 2306 | |
4291d9c8 RS |
2307 | /* If dbx symbol table desired, initialize writing it |
2308 | and output the predefined types. */ | |
2a9a326b | 2309 | timevar_push (TV_SYMOUT); |
0021b564 JM |
2310 | #ifdef DWARF2_UNWIND_INFO |
2311 | if (dwarf2out_do_frame ()) | |
2312 | dwarf2out_frame_init (); | |
2313 | #endif | |
a51d908e | 2314 | |
e2a12aca | 2315 | (*debug_hooks->init) (main_input_filename); |
2a9a326b | 2316 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2317 | |
2318 | /* Initialize yet another pass. */ | |
2319 | ||
b93a436e | 2320 | init_final (main_input_filename); |
0d332add | 2321 | init_branch_prob (dump_base_name); |
4291d9c8 | 2322 | |
2a9a326b | 2323 | timevar_push (TV_PARSE); |
4291d9c8 RS |
2324 | |
2325 | /* Call the parser, which parses the entire file | |
2326 | (calling rest_of_compilation for each function). */ | |
2327 | ||
2328 | if (yyparse () != 0) | |
453dfc78 JW |
2329 | { |
2330 | if (errorcount == 0) | |
6ed551b4 | 2331 | fnotice (stderr, "Errors detected in input file (your bison.simple is out of date)\n"); |
453dfc78 JW |
2332 | |
2333 | /* In case there were missing closebraces, | |
2334 | get us back to the global binding level. */ | |
2335 | while (! global_bindings_p ()) | |
2336 | poplevel (0, 0, 0); | |
2337 | } | |
4291d9c8 RS |
2338 | |
2339 | /* Compilation is now finished except for writing | |
2340 | what's left of the symbol table output. */ | |
2341 | ||
2a9a326b | 2342 | timevar_pop (TV_PARSE); |
4291d9c8 | 2343 | |
1fe65c00 PB |
2344 | if (flag_syntax_only) |
2345 | goto finish_syntax; | |
2346 | ||
4291d9c8 RS |
2347 | globals = getdecls (); |
2348 | ||
2349 | /* Really define vars that have had only a tentative definition. | |
2350 | Really output inline functions that must actually be callable | |
2351 | and have not been output so far. */ | |
2352 | ||
2353 | { | |
2354 | int len = list_length (globals); | |
4da896b2 | 2355 | tree *vec = (tree *) xmalloc (sizeof (tree) * len); |
4291d9c8 RS |
2356 | int i; |
2357 | tree decl; | |
2358 | ||
2359 | /* Process the decls in reverse order--earliest first. | |
2360 | Put them into VEC from back to front, then take out from front. */ | |
2361 | ||
2362 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
2363 | vec[len - i - 1] = decl; | |
2364 | ||
32291f94 | 2365 | wrapup_global_declarations (vec, len); |
4291d9c8 | 2366 | |
2668793e JL |
2367 | /* This must occur after the loop to output deferred functions. Else |
2368 | the profiler initializer would not be emitted if all the functions | |
2369 | in this compilation unit were deferred. | |
2370 | ||
2371 | output_func_start_profiler can not cause any additional functions or | |
2372 | data to need to be output, so it need not be in the deferred function | |
2373 | loop above. */ | |
2374 | output_func_start_profiler (); | |
2375 | ||
6c3fce73 | 2376 | check_global_declarations (vec, len); |
4da896b2 MM |
2377 | |
2378 | /* Clean up. */ | |
2379 | free (vec); | |
4291d9c8 RS |
2380 | } |
2381 | ||
4b8af8d9 JM |
2382 | /* Write out any pending weak symbol declarations. */ |
2383 | ||
2384 | weak_finish (); | |
2385 | ||
854a97f0 | 2386 | /* Do dbx symbols. */ |
2a9a326b | 2387 | timevar_push (TV_SYMOUT); |
7f905405 | 2388 | |
0021b564 JM |
2389 | #ifdef DWARF2_UNWIND_INFO |
2390 | if (dwarf2out_do_frame ()) | |
2391 | dwarf2out_frame_finish (); | |
2392 | #endif | |
2393 | ||
e2a12aca | 2394 | (*debug_hooks->finish) (main_input_filename); |
2a9a326b | 2395 | timevar_pop (TV_SYMOUT); |
9a666dda | 2396 | |
4291d9c8 RS |
2397 | /* Output some stuff at end of file if nec. */ |
2398 | ||
2a1ee410 RH |
2399 | dw2_output_indirect_constants (); |
2400 | ||
b93a436e | 2401 | end_final (dump_base_name); |
854a97f0 | 2402 | |
51891abe | 2403 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
61098249 | 2404 | { |
2a9a326b | 2405 | timevar_push (TV_DUMP); |
61098249 | 2406 | open_dump_file (DFI_bp, NULL); |
51891abe JH |
2407 | |
2408 | end_branch_prob (); | |
2409 | ||
61098249 | 2410 | close_dump_file (DFI_bp, NULL, NULL_RTX); |
2a9a326b | 2411 | timevar_pop (TV_DUMP); |
61098249 | 2412 | } |
854a97f0 | 2413 | |
4291d9c8 | 2414 | #ifdef ASM_FILE_END |
b93a436e | 2415 | ASM_FILE_END (asm_out_file); |
4291d9c8 RS |
2416 | #endif |
2417 | ||
acb0db7b ZW |
2418 | /* Attach a special .ident directive to the end of the file to identify |
2419 | the version of GCC which compiled this code. The format of the .ident | |
2420 | string is patterned after the ones produced by native SVR4 compilers. */ | |
2421 | #ifdef IDENT_ASM_OP | |
2422 | if (!flag_no_ident) | |
2423 | fprintf (asm_out_file, "%s\"GCC: (GNU) %s\"\n", | |
2424 | IDENT_ASM_OP, version_string); | |
2425 | #endif | |
2426 | ||
4291d9c8 | 2427 | /* Language-specific end of compilation actions. */ |
1fe65c00 | 2428 | finish_syntax: |
13c61421 NB |
2429 | if (lang_hooks.finish) |
2430 | (*lang_hooks.finish) (); | |
4291d9c8 RS |
2431 | |
2432 | /* Close the dump files. */ | |
2433 | ||
2434 | if (flag_gen_aux_info) | |
2435 | { | |
2436 | fclose (aux_info_file); | |
2437 | if (errorcount) | |
2438 | unlink (aux_info_file_name); | |
2439 | } | |
2440 | ||
61098249 | 2441 | if (optimize > 0 && open_dump_file (DFI_combine, NULL)) |
4291d9c8 | 2442 | { |
2a9a326b AS |
2443 | timevar_push (TV_DUMP); |
2444 | dump_combine_total_stats (rtl_dump_file); | |
61098249 | 2445 | close_dump_file (DFI_combine, NULL, NULL_RTX); |
2a9a326b | 2446 | timevar_pop (TV_DUMP); |
4291d9c8 RS |
2447 | } |
2448 | ||
4291d9c8 RS |
2449 | /* Close non-debugging input and output files. Take special care to note |
2450 | whether fclose returns an error, since the pages might still be on the | |
2451 | buffer chain while the file is open. */ | |
2452 | ||
e3d1fd32 | 2453 | finish_parse (); |
e56e519d | 2454 | |
400500c4 RK |
2455 | if (ferror (asm_out_file) != 0) |
2456 | fatal_io_error ("error writing to %s", asm_file_name); | |
2457 | if (fclose (asm_out_file) != 0) | |
2458 | fatal_io_error ("error closing %s", asm_file_name); | |
4291d9c8 | 2459 | |
735a0e33 UD |
2460 | /* Do whatever is necessary to finish printing the graphs. */ |
2461 | if (graph_dump_format != no_graph) | |
2462 | { | |
61098249 RH |
2463 | int i; |
2464 | ||
dbbbbf3b | 2465 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 RH |
2466 | if (dump_file[i].initialized && dump_file[i].graph_dump_p) |
2467 | { | |
2468 | char seq[16]; | |
2469 | char *suffix; | |
2470 | ||
2471 | sprintf (seq, ".%02d.", i); | |
2472 | suffix = concat (seq, dump_file[i].extension, NULL); | |
2473 | finish_graph_dump_file (dump_base_name, suffix); | |
2474 | free (suffix); | |
2475 | } | |
735a0e33 UD |
2476 | } |
2477 | ||
fba0bfd4 | 2478 | if (mem_report) |
520a57c8 ZW |
2479 | { |
2480 | ggc_print_statistics (); | |
2481 | stringpool_statistics (); | |
2482 | } | |
fba0bfd4 | 2483 | |
ed396e68 BS |
2484 | /* Free up memory for the benefit of leak detectors. */ |
2485 | free_reg_info (); | |
2486 | ||
2a9a326b AS |
2487 | /* Stop timing total execution time. */ |
2488 | timevar_stop (TV_TOTAL); | |
2489 | ||
4291d9c8 RS |
2490 | /* Print the times. */ |
2491 | ||
0d565768 | 2492 | timevar_print (stderr); |
4291d9c8 RS |
2493 | } |
2494 | \f | |
2495 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
2496 | and TYPE_DECL nodes. | |
2497 | ||
ef6748cb MM |
2498 | This does nothing for local (non-static) variables, unless the |
2499 | variable is a register variable with an ASMSPEC. In that case, or | |
d558416e | 2500 | if the variable is not an automatic, it sets up the RTL and |
ef6748cb MM |
2501 | outputs any assembler code (label definition, storage allocation |
2502 | and initialization). | |
4291d9c8 RS |
2503 | |
2504 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2505 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2506 | if this declaration is not within a function. */ | |
2507 | ||
2508 | void | |
2509 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
2510 | tree decl; | |
87e11268 | 2511 | const char *asmspec; |
4291d9c8 RS |
2512 | int top_level; |
2513 | int at_end; | |
2514 | { | |
2515 | /* Declarations of variables, and of functions defined elsewhere. */ | |
2516 | ||
928eb380 RS |
2517 | /* The most obvious approach, to put an #ifndef around where |
2518 | this macro is used, doesn't work since it's inside a macro call. */ | |
2519 | #ifndef ASM_FINISH_DECLARE_OBJECT | |
2520 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) | |
2521 | #endif | |
2522 | ||
4291d9c8 RS |
2523 | /* Forward declarations for nested functions are not "external", |
2524 | but we need to treat them as if they were. */ | |
216d5cdd | 2525 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 | 2526 | || TREE_CODE (decl) == FUNCTION_DECL) |
2a9a326b AS |
2527 | { |
2528 | timevar_push (TV_VARCONST); | |
19e7881c MM |
2529 | if (asmspec) |
2530 | make_decl_rtl (decl, asmspec); | |
8cf8d8a2 JM |
2531 | /* Don't output anything |
2532 | when a tentative file-scope definition is seen. | |
2533 | But at end of compilation, do output code for them. */ | |
2534 | if (at_end || !DECL_DEFER_OUTPUT (decl)) | |
2535 | assemble_variable (decl, top_level, at_end, 0); | |
2a9a326b AS |
2536 | if (decl == last_assemble_variable_decl) |
2537 | { | |
2538 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2539 | top_level, at_end); | |
2540 | } | |
2541 | timevar_pop (TV_VARCONST); | |
2542 | } | |
216d5cdd | 2543 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2544 | { |
2545 | if (decode_reg_name (asmspec) >= 0) | |
2546 | { | |
19e7881c | 2547 | SET_DECL_RTL (decl, NULL_RTX); |
6c418184 | 2548 | make_decl_rtl (decl, asmspec); |
4291d9c8 RS |
2549 | } |
2550 | else | |
8f17b5c5 MM |
2551 | { |
2552 | error ("invalid register name `%s' for register variable", asmspec); | |
2553 | DECL_REGISTER (decl) = 0; | |
19e7881c MM |
2554 | if (!top_level) |
2555 | expand_decl (decl); | |
8f17b5c5 | 2556 | } |
4291d9c8 | 2557 | } |
f246a305 RS |
2558 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2559 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2560 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2561 | { |
2562 | timevar_push (TV_SYMOUT); | |
2563 | dbxout_symbol (decl, 0); | |
2564 | timevar_pop (TV_SYMOUT); | |
2565 | } | |
4291d9c8 RS |
2566 | #endif |
2567 | #ifdef SDB_DEBUGGING_INFO | |
2568 | else if (write_symbols == SDB_DEBUG && top_level | |
2569 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2570 | { |
2571 | timevar_push (TV_SYMOUT); | |
2572 | sdbout_symbol (decl, 0); | |
2573 | timevar_pop (TV_SYMOUT); | |
2574 | } | |
4291d9c8 RS |
2575 | #endif |
2576 | } | |
2577 | ||
2578 | /* Called after finishing a record, union or enumeral type. */ | |
2579 | ||
2580 | void | |
2581 | rest_of_type_compilation (type, toplev) | |
114791ea | 2582 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO) |
4291d9c8 RS |
2583 | tree type; |
2584 | int toplev; | |
114791ea KG |
2585 | #else |
2586 | tree type ATTRIBUTE_UNUSED; | |
2587 | int toplev ATTRIBUTE_UNUSED; | |
2588 | #endif | |
4291d9c8 | 2589 | { |
2a9a326b | 2590 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2591 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2592 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2593 | dbxout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 RS |
2594 | #endif |
2595 | #ifdef SDB_DEBUGGING_INFO | |
2596 | if (write_symbols == SDB_DEBUG) | |
d8d1d62b | 2597 | sdbout_symbol (TYPE_STUB_DECL (type), !toplev); |
881c6935 JM |
2598 | #endif |
2599 | #ifdef DWARF2_DEBUGGING_INFO | |
2600 | if (write_symbols == DWARF2_DEBUG && toplev) | |
2601 | dwarf2out_decl (TYPE_STUB_DECL (type)); | |
4291d9c8 | 2602 | #endif |
2a9a326b | 2603 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2604 | } |
2605 | ||
2606 | /* This is called from finish_function (within yyparse) | |
2607 | after each top-level definition is parsed. | |
2608 | It is supposed to compile that function or variable | |
2609 | and output the assembler code for it. | |
2610 | After we return, the tree storage is freed. */ | |
2611 | ||
2612 | void | |
2613 | rest_of_compilation (decl) | |
2614 | tree decl; | |
2615 | { | |
2616 | register rtx insns; | |
4291d9c8 | 2617 | int tem; |
ab40ad2b | 2618 | int failure = 0; |
c4403371 | 2619 | int rebuild_label_notes_after_reload; |
7b40bc6b | 2620 | int register_life_up_to_date; |
4291d9c8 | 2621 | |
2a9a326b AS |
2622 | timevar_push (TV_REST_OF_COMPILATION); |
2623 | ||
1b3d8f8a GK |
2624 | /* Now that we're out of the frontend, we shouldn't have any more |
2625 | CONCATs anywhere. */ | |
2626 | generating_concat_p = 0; | |
2627 | ||
d511f9d5 AO |
2628 | /* When processing delayed functions, prepare_function_start() won't |
2629 | have been run to re-initialize it. */ | |
2630 | cse_not_expected = ! optimize; | |
2631 | ||
fcd7f76b JM |
2632 | /* First, make sure that NOTE_BLOCK is set correctly for each |
2633 | NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */ | |
116eebd6 MM |
2634 | if (!cfun->x_whole_function_mode_p) |
2635 | identify_blocks (); | |
fcd7f76b JM |
2636 | |
2637 | /* Then remove any notes we don't need. That will make iterating | |
aeeeda03 MM |
2638 | over the instruction sequence faster, and allow the garbage |
2639 | collector to reclaim the memory used by the notes. */ | |
64b59a80 | 2640 | remove_unnecessary_notes (); |
aeeeda03 | 2641 | |
e619323d DM |
2642 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK |
2643 | tree in sensible shape. So, we just recalculate it here. */ | |
01d939e8 | 2644 | if (cfun->x_whole_function_mode_p) |
116eebd6 | 2645 | reorder_blocks (); |
e619323d | 2646 | |
1f8f4a0b MM |
2647 | init_flow (); |
2648 | ||
4291d9c8 RS |
2649 | /* If we are reconsidering an inline function |
2650 | at the end of compilation, skip the stuff for making it inline. */ | |
2651 | ||
2652 | if (DECL_SAVED_INSNS (decl) == 0) | |
2653 | { | |
956d6950 | 2654 | int inlinable = 0; |
14a774a9 | 2655 | tree parent; |
dff01034 | 2656 | const char *lose; |
4291d9c8 | 2657 | |
14a774a9 RK |
2658 | /* If this is nested inside an inlined external function, pretend |
2659 | it was only declared. Since we cannot inline such functions, | |
2660 | generating code for this one is not only not necessary but will | |
2661 | confuse some debugging output writers. */ | |
2662 | for (parent = DECL_CONTEXT (current_function_decl); | |
854a97f0 | 2663 | parent != NULL_TREE; |
140b60b4 | 2664 | parent = get_containing_scope (parent)) |
3e038608 MM |
2665 | if (TREE_CODE (parent) == FUNCTION_DECL |
2666 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
14a774a9 RK |
2667 | { |
2668 | DECL_INITIAL (decl) = 0; | |
2669 | goto exit_rest_of_compilation; | |
2670 | } | |
2671 | ||
4291d9c8 | 2672 | /* If requested, consider whether to make this function inline. */ |
5262d6b6 | 2673 | if ((DECL_INLINE (decl) && !flag_no_inline) |
b850de4f | 2674 | || flag_inline_functions) |
2a9a326b AS |
2675 | { |
2676 | timevar_push (TV_INTEGRATION); | |
2677 | lose = function_cannot_inline_p (decl); | |
2678 | timevar_pop (TV_INTEGRATION); | |
2679 | if (lose || ! optimize) | |
2680 | { | |
2681 | if (warn_inline && DECL_INLINE (decl)) | |
2682 | warning_with_decl (decl, lose); | |
2683 | DECL_ABSTRACT_ORIGIN (decl) = 0; | |
2684 | /* Don't really compile an extern inline function. | |
2685 | If we can't make it inline, pretend | |
2686 | it was only declared. */ | |
2687 | if (DECL_EXTERNAL (decl)) | |
2688 | { | |
2689 | DECL_INITIAL (decl) = 0; | |
2690 | goto exit_rest_of_compilation; | |
2691 | } | |
2692 | } | |
2693 | else | |
2694 | /* ??? Note that this has the effect of making it look | |
2695 | like "inline" was specified for a function if we choose | |
2696 | to inline it. This isn't quite right, but it's | |
2697 | probably not worth the trouble to fix. */ | |
2698 | inlinable = DECL_INLINE (decl) = 1; | |
2699 | } | |
4291d9c8 RS |
2700 | |
2701 | insns = get_insns (); | |
2702 | ||
2703 | /* Dump the rtl code if we are dumping rtl. */ | |
2704 | ||
61098249 | 2705 | if (open_dump_file (DFI_rtl, decl)) |
032713aa | 2706 | { |
032713aa NC |
2707 | if (DECL_SAVED_INSNS (decl)) |
2708 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
61098249 | 2709 | close_dump_file (DFI_rtl, print_rtl, insns); |
032713aa | 2710 | } |
4291d9c8 | 2711 | |
52a11cbf RH |
2712 | /* Convert from NOTE_INSN_EH_REGION style notes, and do other |
2713 | sorts of eh initialization. Delay this until after the | |
2714 | initial rtl dump so that we can see the original nesting. */ | |
2715 | convert_from_eh_region_ranges (); | |
2716 | ||
4291d9c8 RS |
2717 | /* If function is inline, and we don't yet know whether to |
2718 | compile it by itself, defer decision till end of compilation. | |
2719 | finish_compilation will call rest_of_compilation again | |
16411ea6 | 2720 | for those functions that need to be output. Also defer those |
36edd3cc BS |
2721 | functions that we are supposed to defer. */ |
2722 | ||
fcd7f76b | 2723 | if (inlinable |
36edd3cc BS |
2724 | || (DECL_INLINE (decl) |
2725 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
2726 | && ! flag_keep_inline_functions) | |
2727 | || DECL_EXTERNAL (decl)))) | |
fcd7f76b | 2728 | DECL_DEFER_OUTPUT (decl) = 1; |
951af26e | 2729 | |
f1f39752 JM |
2730 | if (DECL_INLINE (decl)) |
2731 | /* DWARF wants seperate debugging info for abstract and | |
2732 | concrete instances of all inline functions, including those | |
2733 | declared inline but not inlined, and those inlined even | |
2734 | though they weren't declared inline. Conveniently, that's | |
2735 | what DECL_INLINE means at this point. */ | |
2b85879e | 2736 | (*debug_hooks->deferred_inline_function) (decl); |
f1f39752 | 2737 | |
fcd7f76b JM |
2738 | if (DECL_DEFER_OUTPUT (decl)) |
2739 | { | |
f93dacbd | 2740 | /* If -Wreturn-type, we have to do a bit of compilation. We just |
4793dca1 | 2741 | want to call cleanup the cfg to figure out whether or not we can |
f93dacbd | 2742 | fall off the end of the function; we do the minimum amount of |
4793dca1 | 2743 | work necessary to make that safe. */ |
a701efba | 2744 | if (warn_return_type) |
937522b5 | 2745 | { |
a701efba | 2746 | int saved_optimize = optimize; |
f93dacbd | 2747 | |
a701efba | 2748 | optimize = 0; |
4793dca1 | 2749 | rebuild_jump_labels (insns); |
a701efba | 2750 | find_exception_handler_labels (); |
4793dca1 | 2751 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
0068fd96 | 2752 | cleanup_cfg (CLEANUP_PRE_SIBCALL | CLEANUP_PRE_LOOP); |
a701efba MM |
2753 | optimize = saved_optimize; |
2754 | } | |
2755 | ||
dd1ba632 JM |
2756 | current_function_nothrow = nothrow_function_p (); |
2757 | if (current_function_nothrow) | |
2758 | /* Now we know that this can't throw; set the flag for the benefit | |
2759 | of other functions later in this translation unit. */ | |
2760 | TREE_NOTHROW (current_function_decl) = 1; | |
2761 | ||
2a9a326b | 2762 | timevar_push (TV_INTEGRATION); |
f93dacbd | 2763 | save_for_inline (decl); |
2a9a326b | 2764 | timevar_pop (TV_INTEGRATION); |
49ad7cfa | 2765 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; |
a701efba | 2766 | goto exit_rest_of_compilation; |
4291d9c8 RS |
2767 | } |
2768 | ||
b8471b65 | 2769 | /* If specified extern inline but we aren't inlining it, we are |
1cbe6eb6 JM |
2770 | done. This goes for anything that gets here with DECL_EXTERNAL |
2771 | set, not just things with DECL_INLINE. */ | |
2772 | if (DECL_EXTERNAL (decl)) | |
b8471b65 RK |
2773 | goto exit_rest_of_compilation; |
2774 | } | |
07af9d16 | 2775 | |
1f8f4a0b | 2776 | ggc_collect (); |
0a1c58a2 | 2777 | |
49ad7cfa BS |
2778 | /* Initialize some variables used by the optimizers. */ |
2779 | init_function_for_compilation (); | |
2780 | ||
951af26e JM |
2781 | if (! DECL_DEFER_OUTPUT (decl)) |
2782 | TREE_ASM_WRITTEN (decl) = 1; | |
4291d9c8 | 2783 | |
659e47fb AH |
2784 | /* Now that integrate will no longer see our rtl, we need not |
2785 | distinguish between the return value of this function and the | |
2786 | return value of called functions. Also, we can remove all SETs | |
2787 | of subregs of hard registers; they are only here because of | |
c0e7830f DD |
2788 | integrate. Also, we can now initialize pseudos intended to |
2789 | carry magic hard reg data throughout the function. */ | |
4291d9c8 | 2790 | rtx_equal_function_value_matters = 0; |
659e47fb | 2791 | purge_hard_subreg_sets (get_insns ()); |
c0e7830f | 2792 | emit_initial_value_sets (); |
21c7361e | 2793 | |
0045d504 | 2794 | /* Don't return yet if -Wreturn-type; we need to do cleanup_cfg. */ |
32235b30 | 2795 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) |
a18820c6 | 2796 | goto exit_rest_of_compilation; |
4291d9c8 | 2797 | |
9d9e5c09 RH |
2798 | /* We may have potential sibling or tail recursion sites. Select one |
2799 | (of possibly multiple) methods of performing the call. */ | |
2800 | if (flag_optimize_sibling_calls) | |
2801 | { | |
2a9a326b | 2802 | timevar_push (TV_JUMP); |
9d9e5c09 RH |
2803 | open_dump_file (DFI_sibling, decl); |
2804 | ||
2a9a326b | 2805 | optimize_sibling_and_tail_recursive_calls (); |
9d9e5c09 RH |
2806 | |
2807 | close_dump_file (DFI_sibling, print_rtl, get_insns ()); | |
2a9a326b | 2808 | timevar_pop (TV_JUMP); |
9d9e5c09 | 2809 | } |
2a9a326b | 2810 | |
52a11cbf RH |
2811 | /* Complete generation of exception handling code. */ |
2812 | find_exception_handler_labels (); | |
2813 | if (doing_eh (0)) | |
2814 | { | |
2815 | timevar_push (TV_JUMP); | |
2816 | open_dump_file (DFI_eh, decl); | |
2817 | ||
2818 | finish_eh_generation (); | |
2819 | ||
2820 | close_dump_file (DFI_eh, print_rtl, get_insns ()); | |
2821 | timevar_pop (TV_JUMP); | |
2822 | } | |
2823 | ||
4291d9c8 RS |
2824 | #ifdef FINALIZE_PIC |
2825 | /* If we are doing position-independent code generation, now | |
2826 | is the time to output special prologues and epilogues. | |
2827 | We do not want to do this earlier, because it just clutters | |
2828 | up inline functions with meaningless insns. */ | |
2829 | if (flag_pic) | |
2830 | FINALIZE_PIC; | |
2831 | #endif | |
2832 | ||
2833 | insns = get_insns (); | |
2834 | ||
2835 | /* Copy any shared structure that should not be shared. */ | |
d1b81779 | 2836 | unshare_all_rtl (current_function_decl, insns); |
4291d9c8 | 2837 | |
c9ec4f99 | 2838 | #ifdef SETJMP_VIA_SAVE_AREA |
fb530c07 | 2839 | /* This must be performed before virtual register instantiation. */ |
c9ec4f99 DM |
2840 | if (current_function_calls_alloca) |
2841 | optimize_save_area_alloca (insns); | |
2842 | #endif | |
2843 | ||
4291d9c8 | 2844 | /* Instantiate all virtual registers. */ |
a18820c6 | 2845 | instantiate_virtual_regs (current_function_decl, insns); |
4291d9c8 | 2846 | |
61098249 | 2847 | open_dump_file (DFI_jump, decl); |
02db399d | 2848 | |
cc4e79d8 JL |
2849 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields |
2850 | are initialized and to compute whether control can drop off the end | |
2851 | of the function. */ | |
994a57cd | 2852 | |
2a9a326b AS |
2853 | timevar_push (TV_JUMP); |
2854 | /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this | |
2855 | before jump optimization switches branch directions. */ | |
2856 | expected_value_to_br_prob (); | |
2857 | ||
2858 | reg_scan (insns, max_reg_num (), 0); | |
0045d504 JH |
2859 | rebuild_jump_labels (insns); |
2860 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
0068fd96 | 2861 | cleanup_cfg ((optimize ? CLEANUP_EXPENSIVE : 0) | CLEANUP_PRE_LOOP); |
0045d504 JH |
2862 | copy_loop_headers (insns); |
2863 | purge_line_number_notes (insns); | |
2a9a326b AS |
2864 | |
2865 | timevar_pop (TV_JUMP); | |
673b5311 | 2866 | |
32235b30 | 2867 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
951af26e | 2868 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
a18820c6 RH |
2869 | { |
2870 | close_dump_file (DFI_jump, print_rtl, insns); | |
2871 | goto exit_rest_of_compilation; | |
2872 | } | |
2873 | ||
0826f1d8 JL |
2874 | /* Long term, this should probably move before the jump optimizer too, |
2875 | but I didn't want to disturb the rtl_dump_and_exit and related | |
2876 | stuff at this time. */ | |
2877 | if (optimize > 0 && flag_ssa) | |
2878 | { | |
2879 | /* Convert to SSA form. */ | |
2880 | ||
2881 | timevar_push (TV_TO_SSA); | |
2882 | open_dump_file (DFI_ssa, decl); | |
2883 | ||
2884 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
0068fd96 | 2885 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
0826f1d8 JL |
2886 | convert_to_ssa (); |
2887 | ||
2888 | close_dump_file (DFI_ssa, print_rtl_with_bb, insns); | |
2889 | timevar_pop (TV_TO_SSA); | |
2890 | ||
0b47e4c1 JL |
2891 | /* Perform sparse conditional constant propagation, if requested. */ |
2892 | if (flag_ssa_ccp) | |
2893 | { | |
2894 | timevar_push (TV_SSA_CCP); | |
2895 | open_dump_file (DFI_ssa_ccp, decl); | |
2896 | ||
2897 | ssa_const_prop (); | |
2898 | ||
2899 | close_dump_file (DFI_ssa_ccp, print_rtl_with_bb, get_insns ()); | |
2900 | timevar_pop (TV_SSA_CCP); | |
2901 | } | |
2902 | ||
2903 | /* It would be useful to cleanup the CFG at this point, but block | |
2904 | merging and possibly other transformations might leave a PHI | |
2905 | node in the middle of a basic block, which is a strict no-no. */ | |
2906 | ||
0826f1d8 JL |
2907 | /* The SSA implementation uses basic block numbers in its phi |
2908 | nodes. Thus, changing the control-flow graph or the basic | |
2909 | blocks, e.g., calling find_basic_blocks () or cleanup_cfg (), | |
2910 | may cause problems. */ | |
2911 | ||
2912 | if (flag_ssa_dce) | |
2913 | { | |
2d76cb1a | 2914 | /* Remove dead code. */ |
0826f1d8 JL |
2915 | |
2916 | timevar_push (TV_SSA_DCE); | |
2917 | open_dump_file (DFI_ssa_dce, decl); | |
2918 | ||
2919 | insns = get_insns (); | |
2920 | ssa_eliminate_dead_code(); | |
2921 | ||
2922 | close_dump_file (DFI_ssa_dce, print_rtl_with_bb, insns); | |
2923 | timevar_pop (TV_SSA_DCE); | |
2924 | } | |
2925 | ||
2926 | /* Convert from SSA form. */ | |
2927 | ||
2928 | timevar_push (TV_FROM_SSA); | |
2929 | open_dump_file (DFI_ussa, decl); | |
2930 | ||
2931 | convert_from_ssa (); | |
2932 | /* New registers have been created. Rescan their usage. */ | |
2933 | reg_scan (insns, max_reg_num (), 1); | |
2934 | /* Life analysis used in SSA adds log_links but these | |
2935 | shouldn't be there until the flow stage, so clear | |
2936 | them away. */ | |
2937 | clear_log_links (insns); | |
2938 | ||
2939 | close_dump_file (DFI_ussa, print_rtl_with_bb, insns); | |
2940 | timevar_pop (TV_FROM_SSA); | |
2941 | ||
2942 | ggc_collect (); | |
2943 | } | |
2944 | ||
2a9a326b | 2945 | timevar_push (TV_JUMP); |
9ec6d7ab RH |
2946 | |
2947 | if (optimize > 0) | |
2a9a326b AS |
2948 | { |
2949 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
0068fd96 | 2950 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
9ec6d7ab RH |
2951 | |
2952 | /* ??? Run if-conversion before delete_null_pointer_checks, | |
2953 | since the later does not preserve the CFG. This should | |
2954 | be changed -- no since converting if's that are going to | |
2955 | be deleted. */ | |
2956 | timevar_push (TV_IFCVT); | |
2957 | if_convert (0); | |
2958 | timevar_pop (TV_IFCVT); | |
2959 | ||
2960 | /* Try to identify useless null pointer tests and delete them. */ | |
2961 | if (flag_delete_null_pointer_checks) | |
2962 | delete_null_pointer_checks (insns); | |
2a9a326b AS |
2963 | } |
2964 | ||
2965 | /* Jump optimization, and the removal of NULL pointer checks, may | |
2966 | have reduced the number of instructions substantially. CSE, and | |
2967 | future passes, allocate arrays whose dimensions involve the | |
2968 | maximum instruction UID, so if we can reduce the maximum UID | |
2969 | we'll save big on memory. */ | |
2970 | renumber_insns (rtl_dump_file); | |
2971 | timevar_pop (TV_JUMP); | |
a18820c6 RH |
2972 | |
2973 | close_dump_file (DFI_jump, print_rtl, insns); | |
dfdb644f | 2974 | |
1f8f4a0b | 2975 | ggc_collect (); |
a3770a81 | 2976 | |
4291d9c8 RS |
2977 | /* Perform common subexpression elimination. |
2978 | Nonzero value from `cse_main' means that jumps were simplified | |
2979 | and some code may now be unreachable, so do | |
2980 | jump optimization again. */ | |
2981 | ||
4291d9c8 RS |
2982 | if (optimize > 0) |
2983 | { | |
61098249 | 2984 | open_dump_file (DFI_cse, decl); |
2a9a326b | 2985 | timevar_push (TV_CSE); |
032713aa | 2986 | |
2a9a326b | 2987 | reg_scan (insns, max_reg_num (), 1); |
4291d9c8 RS |
2988 | |
2989 | if (flag_thread_jumps) | |
2a9a326b AS |
2990 | { |
2991 | timevar_push (TV_JUMP); | |
2992 | thread_jumps (insns, max_reg_num (), 1); | |
2993 | timevar_pop (TV_JUMP); | |
2994 | } | |
4291d9c8 | 2995 | |
2a9a326b | 2996 | tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); |
a18820c6 | 2997 | |
48aba75b RK |
2998 | /* If we are not running more CSE passes, then we are no longer |
2999 | expecting CSE to be run. But always rerun it in a cheap mode. */ | |
3000 | cse_not_expected = !flag_rerun_cse_after_loop && !flag_gcse; | |
c5c76735 | 3001 | |
534bfae4 | 3002 | if (tem || optimize > 1) |
2a9a326b AS |
3003 | { |
3004 | timevar_push (TV_JUMP); | |
0045d504 JH |
3005 | rebuild_jump_labels (insns); |
3006 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
0068fd96 | 3007 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2a9a326b AS |
3008 | timevar_pop (TV_JUMP); |
3009 | } | |
854a97f0 | 3010 | |
e48a7fbe JL |
3011 | /* Run this after jump optmizations remove all the unreachable code |
3012 | so that unreachable code will not keep values live. */ | |
4793dca1 | 3013 | delete_trivially_dead_insns (insns, max_reg_num (), 0); |
e48a7fbe | 3014 | |
dfdb644f | 3015 | /* Try to identify useless null pointer tests and delete them. */ |
b6d24183 | 3016 | if (flag_delete_null_pointer_checks) |
2a9a326b AS |
3017 | { |
3018 | timevar_push (TV_JUMP); | |
3019 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3020 | ||
0068fd96 | 3021 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2a9a326b AS |
3022 | |
3023 | delete_null_pointer_checks (insns); | |
3024 | timevar_pop (TV_JUMP); | |
3025 | } | |
4291d9c8 | 3026 | |
673b5311 MM |
3027 | /* The second pass of jump optimization is likely to have |
3028 | removed a bunch more instructions. */ | |
3029 | renumber_insns (rtl_dump_file); | |
735a0e33 | 3030 | |
2a9a326b | 3031 | timevar_pop (TV_CSE); |
61098249 | 3032 | close_dump_file (DFI_cse, print_rtl, insns); |
032713aa | 3033 | } |
4291d9c8 | 3034 | |
61098249 RH |
3035 | open_dump_file (DFI_addressof, decl); |
3036 | ||
e9a25f70 JL |
3037 | purge_addressof (insns); |
3038 | reg_scan (insns, max_reg_num (), 1); | |
3039 | ||
61098249 | 3040 | close_dump_file (DFI_addressof, print_rtl, insns); |
735a0e33 | 3041 | |
1f8f4a0b | 3042 | ggc_collect (); |
a3770a81 | 3043 | |
7506f491 DE |
3044 | /* Perform global cse. */ |
3045 | ||
3046 | if (optimize > 0 && flag_gcse) | |
3047 | { | |
791f5e8d | 3048 | int save_csb, save_cfj; |
48aba75b RK |
3049 | int tem2 = 0; |
3050 | ||
2a9a326b | 3051 | timevar_push (TV_GCSE); |
61098249 | 3052 | open_dump_file (DFI_gcse, decl); |
735a0e33 | 3053 | |
854a97f0 | 3054 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
0068fd96 | 3055 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2a9a326b | 3056 | tem = gcse_main (insns, rtl_dump_file); |
e78d9500 | 3057 | |
791f5e8d BS |
3058 | save_csb = flag_cse_skip_blocks; |
3059 | save_cfj = flag_cse_follow_jumps; | |
3060 | flag_cse_skip_blocks = flag_cse_follow_jumps = 0; | |
3061 | ||
48aba75b RK |
3062 | /* If -fexpensive-optimizations, re-run CSE to clean up things done |
3063 | by gcse. */ | |
3064 | if (flag_expensive_optimizations) | |
3065 | { | |
3066 | timevar_push (TV_CSE); | |
3067 | reg_scan (insns, max_reg_num (), 1); | |
3068 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
3069 | timevar_pop (TV_CSE); | |
3070 | cse_not_expected = !flag_rerun_cse_after_loop; | |
3071 | } | |
5262d6b6 | 3072 | |
48aba75b RK |
3073 | /* If gcse or cse altered any jumps, rerun jump optimizations to clean |
3074 | things up. Then possibly re-run CSE again. */ | |
3075 | while (tem || tem2) | |
e78d9500 | 3076 | { |
48aba75b | 3077 | tem = tem2 = 0; |
2a9a326b | 3078 | timevar_push (TV_JUMP); |
0045d504 | 3079 | rebuild_jump_labels (insns); |
ca9fef16 JH |
3080 | delete_trivially_dead_insns (insns, max_reg_num (), 0); |
3081 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
0068fd96 | 3082 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); |
2a9a326b | 3083 | timevar_pop (TV_JUMP); |
48aba75b RK |
3084 | |
3085 | if (flag_expensive_optimizations) | |
3086 | { | |
3087 | timevar_push (TV_CSE); | |
3088 | reg_scan (insns, max_reg_num (), 1); | |
3089 | tem2 = cse_main (insns, max_reg_num (), 0, rtl_dump_file); | |
3090 | timevar_pop (TV_CSE); | |
3091 | } | |
854a97f0 | 3092 | } |
7506f491 | 3093 | |
61098249 | 3094 | close_dump_file (DFI_gcse, print_rtl, insns); |
2a9a326b | 3095 | timevar_pop (TV_GCSE); |
a3770a81 | 3096 | |
1f8f4a0b | 3097 | ggc_collect (); |
791f5e8d BS |
3098 | flag_cse_skip_blocks = save_csb; |
3099 | flag_cse_follow_jumps = save_cfj; | |
3100 | } | |
a18820c6 | 3101 | |
4291d9c8 RS |
3102 | /* Move constant computations out of loops. */ |
3103 | ||
3104 | if (optimize > 0) | |
3105 | { | |
2a9a326b | 3106 | timevar_push (TV_LOOP); |
61098249 | 3107 | open_dump_file (DFI_loop, decl); |
854a97f0 | 3108 | |
2a9a326b AS |
3109 | if (flag_rerun_loop_opt) |
3110 | { | |
01f62f01 JH |
3111 | cleanup_barriers (); |
3112 | ||
2a9a326b | 3113 | /* We only want to perform unrolling once. */ |
854a97f0 | 3114 | |
1bf14ad7 | 3115 | loop_optimize (insns, rtl_dump_file, 0); |
a18820c6 | 3116 | |
2a9a326b AS |
3117 | /* The first call to loop_optimize makes some instructions |
3118 | trivially dead. We delete those instructions now in the | |
3119 | hope that doing so will make the heuristics in loop work | |
3120 | better and possibly speed up compilation. */ | |
4793dca1 | 3121 | delete_trivially_dead_insns (insns, max_reg_num (), 0); |
c6a26dc4 | 3122 | |
2a9a326b | 3123 | /* The regscan pass is currently necessary as the alias |
c6a26dc4 | 3124 | analysis code depends on this information. */ |
2a9a326b AS |
3125 | reg_scan (insns, max_reg_num (), 1); |
3126 | } | |
01f62f01 | 3127 | cleanup_barriers (); |
854a97f0 KH |
3128 | loop_optimize (insns, rtl_dump_file, |
3129 | (flag_unroll_loops ? LOOP_UNROLL : 0) | LOOP_BCT); | |
735a0e33 | 3130 | |
61098249 | 3131 | close_dump_file (DFI_loop, print_rtl, insns); |
2a9a326b | 3132 | timevar_pop (TV_LOOP); |
a3770a81 | 3133 | |
1f8f4a0b | 3134 | ggc_collect (); |
4291d9c8 RS |
3135 | } |
3136 | ||
032713aa | 3137 | if (optimize > 0) |
c2f006ec | 3138 | { |
2a9a326b | 3139 | timevar_push (TV_CSE2); |
61098249 | 3140 | open_dump_file (DFI_cse2, decl); |
735a0e33 | 3141 | |
032713aa NC |
3142 | if (flag_rerun_cse_after_loop) |
3143 | { | |
3144 | /* Running another jump optimization pass before the second | |
3145 | cse pass sometimes simplifies the RTL enough to allow | |
3146 | the second CSE pass to do a better job. Jump_optimize can change | |
3147 | max_reg_num so we must rerun reg_scan afterwards. | |
3148 | ??? Rework to not call reg_scan so often. */ | |
2a9a326b | 3149 | timevar_push (TV_JUMP); |
9ec6d7ab | 3150 | |
35bb0780 JW |
3151 | /* The previous call to loop_optimize makes some instructions |
3152 | trivially dead. We delete those instructions now in the | |
3153 | hope that doing so will make the heuristics in jump work | |
3154 | better and possibly speed up compilation. */ | |
4793dca1 | 3155 | delete_trivially_dead_insns (insns, max_reg_num (), 0); |
35bb0780 | 3156 | |
2a9a326b | 3157 | reg_scan (insns, max_reg_num (), 0); |
9ec6d7ab RH |
3158 | |
3159 | timevar_push (TV_IFCVT); | |
3160 | ||
3161 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
46fac664 | 3162 | cleanup_cfg (CLEANUP_EXPENSIVE); |
9ec6d7ab RH |
3163 | if_convert (0); |
3164 | ||
3165 | timevar_pop(TV_IFCVT); | |
3166 | ||
2a9a326b | 3167 | timevar_pop (TV_JUMP); |
854a97f0 | 3168 | |
2a9a326b AS |
3169 | reg_scan (insns, max_reg_num (), 0); |
3170 | tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file); | |
a18820c6 | 3171 | |
032713aa | 3172 | if (tem) |
2a9a326b AS |
3173 | { |
3174 | timevar_push (TV_JUMP); | |
0045d504 JH |
3175 | rebuild_jump_labels (insns); |
3176 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3177 | cleanup_cfg (CLEANUP_EXPENSIVE); | |
2a9a326b AS |
3178 | timevar_pop (TV_JUMP); |
3179 | } | |
032713aa | 3180 | } |
0d332add | 3181 | |
032713aa NC |
3182 | if (flag_thread_jumps) |
3183 | { | |
3184 | /* This pass of jump threading straightens out code | |
3185 | that was kinked by loop optimization. */ | |
2a9a326b AS |
3186 | timevar_push (TV_JUMP); |
3187 | reg_scan (insns, max_reg_num (), 0); | |
3188 | thread_jumps (insns, max_reg_num (), 0); | |
3189 | timevar_pop (TV_JUMP); | |
032713aa | 3190 | } |
735a0e33 | 3191 | |
61098249 | 3192 | close_dump_file (DFI_cse2, print_rtl, insns); |
2a9a326b | 3193 | timevar_pop (TV_CSE2); |
a3770a81 | 3194 | |
1f8f4a0b | 3195 | ggc_collect (); |
032713aa | 3196 | } |
735a0e33 | 3197 | |
9ec6d7ab RH |
3198 | cse_not_expected = 1; |
3199 | ||
4291d9c8 RS |
3200 | regclass_init (); |
3201 | ||
d29c259b RH |
3202 | /* Do control and data flow analysis; wrote some of the results to |
3203 | the dump file. */ | |
4291d9c8 | 3204 | |
2a9a326b | 3205 | timevar_push (TV_FLOW); |
51891abe JH |
3206 | open_dump_file (DFI_cfg, decl); |
3207 | ||
2a9a326b | 3208 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
46fac664 | 3209 | cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0); |
b313a0fe | 3210 | check_function_return_warnings (); |
51891abe | 3211 | |
097c2d51 JH |
3212 | /* It may make more sense to mark constant functions after dead code is |
3213 | eliminated by life_analyzis, but we need to do it early, as -fprofile-arcs | |
3214 | may insert code making function non-constant, but we still must consider | |
3215 | it as constant, otherwise -fbranch-probabilities will not read data back. | |
3216 | ||
3217 | life_analyzis rarely eliminates modification of external memory. | |
3218 | */ | |
3219 | mark_constant_function (); | |
3220 | ||
51891abe | 3221 | close_dump_file (DFI_cfg, print_rtl_with_bb, insns); |
854a97f0 | 3222 | |
51891abe JH |
3223 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
3224 | { | |
3225 | timevar_push (TV_BRANCH_PROB); | |
3226 | open_dump_file (DFI_bp, decl); | |
3227 | ||
3228 | branch_prob (); | |
3229 | ||
3230 | close_dump_file (DFI_bp, print_rtl_with_bb, insns); | |
3231 | timevar_pop (TV_BRANCH_PROB); | |
3232 | } | |
3233 | ||
3234 | open_dump_file (DFI_life, decl); | |
2a9a326b AS |
3235 | if (optimize) |
3236 | { | |
3237 | struct loops loops; | |
604617ba | 3238 | |
2a9a326b AS |
3239 | /* Discover and record the loop depth at the head of each basic |
3240 | block. The loop infrastructure does the real job for us. */ | |
5d6a16e2 | 3241 | flow_loops_find (&loops, LOOP_TREE); |
604617ba | 3242 | |
2a9a326b | 3243 | /* Estimate using heuristics if no profiling info is available. */ |
3ff51205 AH |
3244 | if (flag_guess_branch_prob) |
3245 | estimate_probability (&loops); | |
604617ba | 3246 | |
2a9a326b | 3247 | if (rtl_dump_file) |
6057c0e6 | 3248 | flow_loops_dump (&loops, rtl_dump_file, NULL, 0); |
604617ba | 3249 | |
2a9a326b AS |
3250 | flow_loops_free (&loops); |
3251 | } | |
3252 | life_analysis (insns, rtl_dump_file, PROP_FINAL); | |
2a9a326b | 3253 | timevar_pop (TV_FLOW); |
5ece9746 | 3254 | |
7b40bc6b RH |
3255 | no_new_pseudos = 1; |
3256 | ||
d29c259b RH |
3257 | if (warn_uninitialized || extra_warnings) |
3258 | { | |
3259 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
3260 | if (extra_warnings) | |
3261 | setjmp_args_warning (); | |
4291d9c8 RS |
3262 | } |
3263 | ||
51891abe | 3264 | close_dump_file (DFI_life, print_rtl_with_bb, insns); |
735a0e33 | 3265 | |
1f8f4a0b | 3266 | ggc_collect (); |
a3770a81 | 3267 | |
4291d9c8 RS |
3268 | /* If -opt, try combining insns through substitution. */ |
3269 | ||
3270 | if (optimize > 0) | |
032713aa | 3271 | { |
44a76fc8 AG |
3272 | int rebuild_jump_labels_after_combine = 0; |
3273 | ||
2a9a326b | 3274 | timevar_push (TV_COMBINE); |
61098249 RH |
3275 | open_dump_file (DFI_combine, decl); |
3276 | ||
2a9a326b AS |
3277 | rebuild_jump_labels_after_combine |
3278 | = combine_instructions (insns, max_reg_num ()); | |
854a97f0 | 3279 | |
39f95a2c JH |
3280 | /* Always purge dead edges, as we may eliminate an insn throwing |
3281 | exception. */ | |
3282 | rebuild_jump_labels_after_combine |= purge_all_dead_edges (); | |
3283 | ||
44a76fc8 AG |
3284 | /* Combining insns may have turned an indirect jump into a |
3285 | direct jump. Rebuid the JUMP_LABEL fields of jumping | |
3286 | instructions. */ | |
3287 | if (rebuild_jump_labels_after_combine) | |
3288 | { | |
2a9a326b AS |
3289 | timevar_push (TV_JUMP); |
3290 | rebuild_jump_labels (insns); | |
3291 | timevar_pop (TV_JUMP); | |
9ec6d7ab RH |
3292 | |
3293 | timevar_push (TV_FLOW); | |
46fac664 | 3294 | cleanup_cfg (CLEANUP_EXPENSIVE); |
9ec6d7ab RH |
3295 | |
3296 | /* Blimey. We've got to have the CFG up to date for the call to | |
3297 | if_convert below. However, the random deletion of blocks | |
3298 | without updating life info can wind up with Wierd Stuff in | |
3299 | global_live_at_end. We then run sched1, which updates things | |
3300 | properly, discovers the wierdness and aborts. */ | |
c319629b | 3301 | allocate_bb_life_data (); |
9ec6d7ab | 3302 | update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, |
e54d500c JH |
3303 | PROP_DEATH_NOTES | PROP_KILL_DEAD_CODE |
3304 | | PROP_SCAN_DEAD_CODE); | |
9ec6d7ab RH |
3305 | |
3306 | timevar_pop (TV_FLOW); | |
44a76fc8 | 3307 | } |
735a0e33 | 3308 | |
61098249 | 3309 | close_dump_file (DFI_combine, print_rtl_with_bb, insns); |
2a9a326b | 3310 | timevar_pop (TV_COMBINE); |
a3770a81 | 3311 | |
1f8f4a0b | 3312 | ggc_collect (); |
032713aa | 3313 | } |
8c660648 | 3314 | |
9ec6d7ab RH |
3315 | /* Rerun if-conversion, as combine may have simplified things enough to |
3316 | now meet sequence length restrictions. */ | |
3317 | if (optimize > 0) | |
3318 | { | |
3319 | timevar_push (TV_IFCVT); | |
3320 | open_dump_file (DFI_ce, decl); | |
3321 | ||
7b40bc6b | 3322 | no_new_pseudos = 0; |
9ec6d7ab | 3323 | if_convert (1); |
7b40bc6b | 3324 | no_new_pseudos = 1; |
9ec6d7ab RH |
3325 | |
3326 | close_dump_file (DFI_ce, print_rtl_with_bb, insns); | |
3327 | timevar_pop (TV_IFCVT); | |
3328 | } | |
3329 | ||
8c660648 JL |
3330 | /* Register allocation pre-pass, to reduce number of moves |
3331 | necessary for two-address machines. */ | |
1230327b | 3332 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) |
032713aa | 3333 | { |
2a9a326b | 3334 | timevar_push (TV_REGMOVE); |
61098249 | 3335 | open_dump_file (DFI_regmove, decl); |
735a0e33 | 3336 | |
2a9a326b | 3337 | regmove_optimize (insns, max_reg_num (), rtl_dump_file); |
735a0e33 | 3338 | |
61098249 | 3339 | close_dump_file (DFI_regmove, print_rtl_with_bb, insns); |
2a9a326b | 3340 | timevar_pop (TV_REGMOVE); |
a3770a81 | 3341 | |
1f8f4a0b | 3342 | ggc_collect (); |
032713aa | 3343 | } |
8c660648 | 3344 | |
22fb740d JH |
3345 | /* Do unconditional splitting before register allocation to allow machine |
3346 | description to add extra information not needed previously. */ | |
3347 | split_all_insns (1); | |
3348 | ||
7b40bc6b RH |
3349 | /* Any of the several passes since flow1 will have munged register |
3350 | lifetime data a bit. */ | |
22fb740d | 3351 | register_life_up_to_date = 0; |
7b40bc6b | 3352 | |
97d36f45 | 3353 | #ifdef OPTIMIZE_MODE_SWITCHING |
bd675859 | 3354 | timevar_push (TV_GCSE); |
97d36f45 | 3355 | |
22fb740d | 3356 | no_new_pseudos = 0; |
9714cf43 | 3357 | if (optimize_mode_switching (NULL)) |
bd675859 BS |
3358 | { |
3359 | /* We did work, and so had to regenerate global life information. | |
3360 | Take advantage of this and don't re-recompute register life | |
3361 | information below. */ | |
3362 | register_life_up_to_date = 1; | |
9f09b1f2 | 3363 | } |
22fb740d | 3364 | no_new_pseudos = 1; |
bd675859 BS |
3365 | |
3366 | timevar_pop (TV_GCSE); | |
97d36f45 | 3367 | #endif |
9f09b1f2 | 3368 | |
05b432db JH |
3369 | timevar_push (TV_SCHED); |
3370 | ||
375e2d5c | 3371 | #ifdef INSN_SCHEDULING |
97726216 RK |
3372 | |
3373 | /* Print function header into sched dump now | |
3374 | because doing the sched analysis makes some of the dump. */ | |
4291d9c8 RS |
3375 | if (optimize > 0 && flag_schedule_insns) |
3376 | { | |
61098249 | 3377 | open_dump_file (DFI_sched, decl); |
735a0e33 | 3378 | |
4291d9c8 RS |
3379 | /* Do control and data sched analysis, |
3380 | and write some of the results to dump file. */ | |
3381 | ||
2a9a326b | 3382 | schedule_insns (rtl_dump_file); |
735a0e33 | 3383 | |
61098249 | 3384 | close_dump_file (DFI_sched, print_rtl_with_bb, insns); |
9ec6d7ab | 3385 | |
7b40bc6b RH |
3386 | /* Register lifetime information was updated as part of verifying |
3387 | the schedule. */ | |
3388 | register_life_up_to_date = 1; | |
4291d9c8 | 3389 | } |
375e2d5c | 3390 | #endif |
05b432db JH |
3391 | timevar_pop (TV_SCHED); |
3392 | ||
3393 | ggc_collect (); | |
4291d9c8 | 3394 | |
54ff41b7 JW |
3395 | /* Determine if the current function is a leaf before running reload |
3396 | since this can impact optimizations done by the prologue and | |
3397 | epilogue thus changing register elimination offsets. */ | |
3398 | current_function_is_leaf = leaf_function_p (); | |
3399 | ||
2a9a326b | 3400 | timevar_push (TV_LOCAL_ALLOC); |
61098249 | 3401 | open_dump_file (DFI_lreg, decl); |
246fd41f | 3402 | |
854a97f0 | 3403 | /* Allocate pseudo-regs that are used only within 1 basic block. |
3f1b9b1b JL |
3404 | |
3405 | RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the | |
3406 | jump optimizer after register allocation and reloading are finished. */ | |
4291d9c8 | 3407 | |
7b40bc6b RH |
3408 | if (! register_life_up_to_date) |
3409 | recompute_reg_usage (insns, ! optimize_size); | |
2a9a326b AS |
3410 | regclass (insns, max_reg_num (), rtl_dump_file); |
3411 | rebuild_label_notes_after_reload = local_alloc (); | |
3412 | ||
3413 | timevar_pop (TV_LOCAL_ALLOC); | |
4291d9c8 | 3414 | |
61098249 | 3415 | if (dump_file[DFI_lreg].enabled) |
032713aa | 3416 | { |
2a9a326b AS |
3417 | timevar_push (TV_DUMP); |
3418 | ||
3419 | dump_flow_info (rtl_dump_file); | |
3420 | dump_local_alloc (rtl_dump_file); | |
735a0e33 | 3421 | |
61098249 | 3422 | close_dump_file (DFI_lreg, print_rtl_with_bb, insns); |
2a9a326b | 3423 | timevar_pop (TV_DUMP); |
032713aa | 3424 | } |
4291d9c8 | 3425 | |
1f8f4a0b | 3426 | ggc_collect (); |
a3770a81 | 3427 | |
2a9a326b | 3428 | timevar_push (TV_GLOBAL_ALLOC); |
61098249 | 3429 | open_dump_file (DFI_greg, decl); |
4291d9c8 | 3430 | |
d29c259b RH |
3431 | /* If optimizing, allocate remaining pseudo-regs. Do the reload |
3432 | pass fixing up any insns that are invalid. */ | |
4291d9c8 | 3433 | |
2a9a326b AS |
3434 | if (optimize) |
3435 | failure = global_alloc (rtl_dump_file); | |
3436 | else | |
3437 | { | |
3438 | build_insn_chain (insns); | |
e04ca094 | 3439 | failure = reload (insns, 0); |
2a9a326b AS |
3440 | } |
3441 | ||
3442 | timevar_pop (TV_GLOBAL_ALLOC); | |
4291d9c8 | 3443 | |
8bb16620 BS |
3444 | if (dump_file[DFI_greg].enabled) |
3445 | { | |
3446 | timevar_push (TV_DUMP); | |
3447 | ||
3448 | dump_global_regs (rtl_dump_file); | |
3449 | ||
3450 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); | |
3451 | timevar_pop (TV_DUMP); | |
3452 | } | |
3453 | ||
ab40ad2b RS |
3454 | if (failure) |
3455 | goto exit_rest_of_compilation; | |
3456 | ||
1f8f4a0b | 3457 | ggc_collect (); |
a3770a81 | 3458 | |
8bb16620 BS |
3459 | open_dump_file (DFI_postreload, decl); |
3460 | ||
c8ed219d RK |
3461 | /* Do a very simple CSE pass over just the hard registers. */ |
3462 | if (optimize > 0) | |
2a9a326b AS |
3463 | { |
3464 | timevar_push (TV_RELOAD_CSE_REGS); | |
3465 | reload_cse_regs (insns); | |
854a97f0 | 3466 | timevar_pop (TV_RELOAD_CSE_REGS); |
2a9a326b | 3467 | } |
c8ed219d | 3468 | |
0edaaa41 HB |
3469 | /* Register allocation and reloading may have turned an indirect jump into |
3470 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3471 | jumping instructions. */ | |
3472 | if (rebuild_label_notes_after_reload) | |
2a9a326b AS |
3473 | { |
3474 | timevar_push (TV_JUMP); | |
3475 | ||
3476 | rebuild_jump_labels (insns); | |
3477 | ||
3478 | timevar_pop (TV_JUMP); | |
3479 | } | |
0edaaa41 | 3480 | |
8bb16620 | 3481 | close_dump_file (DFI_postreload, print_rtl_with_bb, insns); |
e881bb1b | 3482 | |
6764d250 | 3483 | /* Re-create the death notes which were deleted during reload. */ |
2a9a326b | 3484 | timevar_push (TV_FLOW2); |
61098249 | 3485 | open_dump_file (DFI_flow2, decl); |
2a9a326b | 3486 | |
6f862f2f JH |
3487 | #ifdef ENABLE_CHECKING |
3488 | verify_flow_info (); | |
3489 | #endif | |
0005550b | 3490 | |
0ecf09f9 JH |
3491 | compute_bb_for_insn (get_max_uid ()); |
3492 | ||
0005550b JH |
3493 | /* If optimizing, then go ahead and split insns now. */ |
3494 | if (optimize > 0) | |
3495 | split_all_insns (0); | |
3496 | ||
0ecf09f9 | 3497 | cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0); |
19d3c25c RH |
3498 | |
3499 | /* On some machines, the prologue and epilogue code, or parts thereof, | |
3500 | can be represented as RTL. Doing so lets us schedule insns between | |
3501 | it and the rest of the code and also allows delayed branch | |
3502 | scheduling to operate in the epilogue. */ | |
3503 | thread_prologue_and_epilogue_insns (insns); | |
3504 | ||
6764d250 | 3505 | if (optimize) |
e881bb1b | 3506 | { |
46fac664 | 3507 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_CROSSJUMP); |
2a9a326b | 3508 | life_analysis (insns, rtl_dump_file, PROP_FINAL); |
1e7f0a48 | 3509 | |
5fa41e13 | 3510 | /* This is kind of a heuristic. We need to run combine_stack_adjustments |
f73ad30e JH |
3511 | even for machines with possibly nonzero RETURN_POPS_ARGS |
3512 | and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having | |
3513 | push instructions will have popping returns. */ | |
3514 | #ifndef PUSH_ROUNDING | |
3515 | if (!ACCUMULATE_OUTGOING_ARGS) | |
1e7f0a48 | 3516 | #endif |
2a9a326b | 3517 | combine_stack_adjustments (); |
1e7f0a48 | 3518 | |
1f8f4a0b | 3519 | ggc_collect (); |
e881bb1b | 3520 | } |
6764d250 | 3521 | |
56744d1a JL |
3522 | flow2_completed = 1; |
3523 | ||
61098249 | 3524 | close_dump_file (DFI_flow2, print_rtl_with_bb, insns); |
2a9a326b | 3525 | timevar_pop (TV_FLOW2); |
e881bb1b | 3526 | |
ede7cd44 RH |
3527 | #ifdef HAVE_peephole2 |
3528 | if (optimize > 0 && flag_peephole2) | |
3529 | { | |
2a9a326b | 3530 | timevar_push (TV_PEEPHOLE2); |
2a9a326b | 3531 | open_dump_file (DFI_peephole2, decl); |
9ec6d7ab | 3532 | |
2a9a326b | 3533 | peephole2_optimize (rtl_dump_file); |
ede7cd44 | 3534 | |
61098249 | 3535 | close_dump_file (DFI_peephole2, print_rtl_with_bb, insns); |
2a9a326b | 3536 | timevar_pop (TV_PEEPHOLE2); |
ede7cd44 RH |
3537 | } |
3538 | #endif | |
3539 | ||
5fa41e13 SC |
3540 | if (optimize > 0 && flag_rename_registers) |
3541 | { | |
3542 | timevar_push (TV_RENAME_REGISTERS); | |
3543 | open_dump_file (DFI_rnreg, decl); | |
3544 | ||
3545 | regrename_optimize (); | |
3546 | ||
3547 | close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); | |
3548 | timevar_pop (TV_RENAME_REGISTERS); | |
854a97f0 | 3549 | } |
5fa41e13 | 3550 | |
2b2a8f1f RH |
3551 | if (optimize > 0) |
3552 | { | |
3553 | timevar_push (TV_IFCVT2); | |
3554 | open_dump_file (DFI_ce2, decl); | |
3555 | ||
3556 | if_convert (1); | |
3557 | ||
3558 | close_dump_file (DFI_ce2, print_rtl_with_bb, insns); | |
3559 | timevar_pop (TV_IFCVT2); | |
3560 | } | |
1e5fd094 JH |
3561 | #ifdef STACK_REGS |
3562 | if (optimize) | |
3563 | split_all_insns (1); | |
3564 | #endif | |
2b2a8f1f | 3565 | |
375e2d5c | 3566 | #ifdef INSN_SCHEDULING |
4291d9c8 RS |
3567 | if (optimize > 0 && flag_schedule_insns_after_reload) |
3568 | { | |
2a9a326b | 3569 | timevar_push (TV_SCHED2); |
61098249 | 3570 | open_dump_file (DFI_sched2, decl); |
4291d9c8 RS |
3571 | |
3572 | /* Do control and data sched analysis again, | |
3573 | and write some more of the results to dump file. */ | |
3574 | ||
05b432db JH |
3575 | split_all_insns (1); |
3576 | ||
2a9a326b | 3577 | schedule_insns (rtl_dump_file); |
4291d9c8 | 3578 | |
61098249 | 3579 | close_dump_file (DFI_sched2, print_rtl_with_bb, insns); |
2a9a326b | 3580 | timevar_pop (TV_SCHED2); |
a3770a81 | 3581 | |
1f8f4a0b | 3582 | ggc_collect (); |
4291d9c8 | 3583 | } |
375e2d5c | 3584 | #endif |
4291d9c8 RS |
3585 | |
3586 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3587 | current_function_uses_only_leaf_regs |
3588 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3589 | #endif |
3590 | ||
1e5fd094 JH |
3591 | #ifdef STACK_REGS |
3592 | timevar_push (TV_REG_STACK); | |
3593 | open_dump_file (DFI_stack, decl); | |
3594 | ||
3595 | reg_to_stack (insns, rtl_dump_file); | |
3596 | ||
3597 | close_dump_file (DFI_stack, print_rtl, insns); | |
3598 | timevar_pop (TV_REG_STACK); | |
3599 | ||
3600 | ggc_collect (); | |
3601 | #endif | |
4793dca1 | 3602 | if (optimize > 0) |
11bdd2ae | 3603 | { |
2a9a326b | 3604 | timevar_push (TV_REORDER_BLOCKS); |
61098249 | 3605 | open_dump_file (DFI_bbro, decl); |
11bdd2ae | 3606 | |
4793dca1 JH |
3607 | /* Last attempt to optimize CFG, as life analyzis possibly removed |
3608 | some instructions. */ | |
3609 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK | |
3610 | | CLEANUP_CROSSJUMP); | |
3611 | if (flag_reorder_blocks) | |
3612 | { | |
3613 | reorder_basic_blocks (); | |
3614 | cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_POST_REGSTACK); | |
3615 | } | |
11bdd2ae | 3616 | |
61098249 | 3617 | close_dump_file (DFI_bbro, print_rtl_with_bb, insns); |
2a9a326b | 3618 | timevar_pop (TV_REORDER_BLOCKS); |
854a97f0 | 3619 | } |
247a370b | 3620 | compute_alignments (); |
11bdd2ae | 3621 | |
2c65021a RK |
3622 | /* If a machine dependent reorganization is needed, call it. */ |
3623 | #ifdef MACHINE_DEPENDENT_REORG | |
eced69b5 | 3624 | timevar_push (TV_MACH_DEP); |
61098249 | 3625 | open_dump_file (DFI_mach, decl); |
88924698 | 3626 | |
61098249 | 3627 | MACHINE_DEPENDENT_REORG (insns); |
032713aa | 3628 | |
232a132f | 3629 | close_dump_file (DFI_mach, print_rtl, insns); |
eced69b5 | 3630 | timevar_pop (TV_MACH_DEP); |
a3770a81 | 3631 | |
1f8f4a0b | 3632 | ggc_collect (); |
2c65021a RK |
3633 | #endif |
3634 | ||
1e5fd094 JH |
3635 | /* CFG no longer kept up to date. */ |
3636 | ||
0045d504 | 3637 | purge_line_number_notes (insns); |
01f62f01 | 3638 | cleanup_barriers (); |
0045d504 | 3639 | |
4291d9c8 | 3640 | /* If a scheduling pass for delayed branches is to be done, |
0f41302f | 3641 | call the scheduling code. */ |
4291d9c8 RS |
3642 | |
3643 | #ifdef DELAY_SLOTS | |
3644 | if (optimize > 0 && flag_delayed_branch) | |
3645 | { | |
2a9a326b | 3646 | timevar_push (TV_DBR_SCHED); |
61098249 | 3647 | open_dump_file (DFI_dbr, decl); |
bbd2180d | 3648 | |
2a9a326b | 3649 | dbr_schedule (insns, rtl_dump_file); |
735a0e33 | 3650 | |
232a132f | 3651 | close_dump_file (DFI_dbr, print_rtl, insns); |
2a9a326b | 3652 | timevar_pop (TV_DBR_SCHED); |
a3770a81 | 3653 | |
1f8f4a0b | 3654 | ggc_collect (); |
61098249 | 3655 | } |
4291d9c8 RS |
3656 | #endif |
3657 | ||
1e5fd094 | 3658 | #if defined (HAVE_ATTR_length) && !defined (STACK_REGS) |
d7e5d7fe | 3659 | timevar_push (TV_SHORTEN_BRANCH); |
6f862f2f | 3660 | split_all_insns_noflow (); |
2a9a326b | 3661 | timevar_pop (TV_SHORTEN_BRANCH); |
932f0847 | 3662 | #endif |
52a11cbf RH |
3663 | |
3664 | convert_to_eh_region_ranges (); | |
932f0847 JH |
3665 | |
3666 | /* Shorten branches. */ | |
3667 | timevar_push (TV_SHORTEN_BRANCH); | |
3668 | shorten_branches (get_insns ()); | |
3669 | timevar_pop (TV_SHORTEN_BRANCH); | |
4291d9c8 | 3670 | |
fb13d4d0 | 3671 | current_function_nothrow = nothrow_function_p (); |
12a22e76 JM |
3672 | if (current_function_nothrow) |
3673 | /* Now we know that this can't throw; set the flag for the benefit | |
3674 | of other functions later in this translation unit. */ | |
3675 | TREE_NOTHROW (current_function_decl) = 1; | |
fb13d4d0 | 3676 | |
4291d9c8 RS |
3677 | /* Now turn the rtl into assembler code. */ |
3678 | ||
2a9a326b AS |
3679 | timevar_push (TV_FINAL); |
3680 | { | |
3681 | rtx x; | |
3682 | const char *fnname; | |
4291d9c8 | 3683 | |
d171a5fb RK |
3684 | /* Get the function's name, as described by its RTL. This may be |
3685 | different from the DECL_NAME name used in the source file. */ | |
4291d9c8 | 3686 | |
2a9a326b AS |
3687 | x = DECL_RTL (decl); |
3688 | if (GET_CODE (x) != MEM) | |
3689 | abort (); | |
3690 | x = XEXP (x, 0); | |
3691 | if (GET_CODE (x) != SYMBOL_REF) | |
3692 | abort (); | |
3693 | fnname = XSTR (x, 0); | |
3694 | ||
3695 | assemble_start_function (decl, fnname); | |
3696 | final_start_function (insns, asm_out_file, optimize); | |
3697 | final (insns, asm_out_file, optimize, 0); | |
e2a12aca | 3698 | final_end_function (); |
2a1ee410 RH |
3699 | |
3700 | #ifdef IA64_UNWIND_INFO | |
3701 | /* ??? The IA-64 ".handlerdata" directive must be issued before | |
3702 | the ".endp" directive that closes the procedure descriptor. */ | |
3703 | output_function_exception_table (); | |
3704 | #endif | |
3705 | ||
2a9a326b | 3706 | assemble_end_function (decl, fnname); |
52a11cbf | 3707 | |
2a1ee410 RH |
3708 | #ifndef IA64_UNWIND_INFO |
3709 | /* Otherwise, it feels unclean to switch sections in the middle. */ | |
52a11cbf | 3710 | output_function_exception_table (); |
2a1ee410 | 3711 | #endif |
52a11cbf | 3712 | |
2a9a326b AS |
3713 | if (! quiet_flag) |
3714 | fflush (asm_out_file); | |
9ddca353 | 3715 | |
854a97f0 | 3716 | /* Release all memory allocated by flow. */ |
2a9a326b | 3717 | free_basic_block_vars (0); |
e881bb1b | 3718 | |
854a97f0 | 3719 | /* Release all memory held by regsets now. */ |
2a9a326b AS |
3720 | regset_release_memory (); |
3721 | } | |
3722 | timevar_pop (TV_FINAL); | |
4291d9c8 | 3723 | |
1f8f4a0b | 3724 | ggc_collect (); |
a3770a81 | 3725 | |
854a97f0 | 3726 | /* Write DBX symbols if requested. */ |
4291d9c8 RS |
3727 | |
3728 | /* Note that for those inline functions where we don't initially | |
3729 | know for certain that we will be generating an out-of-line copy, | |
3730 | the first invocation of this routine (rest_of_compilation) will | |
3731 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
3732 | Later on, finish_compilation will call rest_of_compilation again | |
3733 | for those inline functions that need to have out-of-line copies | |
3734 | generated. During that call, we *will* be routed past here. */ | |
3735 | ||
2a9a326b | 3736 | timevar_push (TV_SYMOUT); |
2b85879e | 3737 | (*debug_hooks->function_decl) (decl); |
2a9a326b | 3738 | timevar_pop (TV_SYMOUT); |
9a666dda | 3739 | |
4291d9c8 RS |
3740 | exit_rest_of_compilation: |
3741 | ||
f246a305 RS |
3742 | /* In case the function was not output, |
3743 | don't leave any temporary anonymous types | |
3744 | queued up for sdb output. */ | |
3745 | #ifdef SDB_DEBUGGING_INFO | |
3746 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3747 | sdbout_types (NULL_TREE); |
f246a305 RS |
3748 | #endif |
3749 | ||
4291d9c8 | 3750 | reload_completed = 0; |
56744d1a | 3751 | flow2_completed = 0; |
f1db3576 | 3752 | no_new_pseudos = 0; |
4291d9c8 | 3753 | |
2a9a326b | 3754 | timevar_push (TV_FINAL); |
4291d9c8 | 3755 | |
2a9a326b AS |
3756 | /* Clear out the insn_length contents now that they are no |
3757 | longer valid. */ | |
3758 | init_insn_lengths (); | |
3759 | ||
3760 | /* Clear out the real_constant_chain before some of the rtx's | |
854a97f0 | 3761 | it runs through become garbage. */ |
2a9a326b AS |
3762 | clear_const_double_mem (); |
3763 | ||
2a9a326b AS |
3764 | /* Show no temporary slots allocated. */ |
3765 | init_temp_slots (); | |
adcd38c9 | 3766 | |
2a9a326b | 3767 | free_basic_block_vars (0); |
fa51b01b | 3768 | |
2a9a326b | 3769 | timevar_pop (TV_FINAL); |
adcd38c9 | 3770 | |
c8d86b9a JW |
3771 | /* Make sure volatile mem refs aren't considered valid operands for |
3772 | arithmetic insns. We must call this here if this is a nested inline | |
3773 | function, since the above code leaves us in the init_recog state | |
3774 | (from final.c), and the function context push/pop code does not | |
3775 | save/restore volatile_ok. | |
3776 | ||
3777 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3778 | anymore if we do it here? */ | |
3779 | ||
3780 | init_recog_no_volatile (); | |
3781 | ||
21cd906e | 3782 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3783 | free_after_parsing (cfun); |
fa51b01b | 3784 | if (! DECL_DEFER_OUTPUT (decl)) |
ae6f2a1c ZW |
3785 | { |
3786 | free_after_compilation (cfun); | |
3787 | ||
3788 | /* Clear integrate.c's pointer to the cfun structure we just | |
3789 | destroyed. */ | |
3790 | DECL_SAVED_INSNS (decl) = 0; | |
3791 | } | |
01d939e8 | 3792 | cfun = 0; |
a3770a81 | 3793 | |
1f8f4a0b | 3794 | ggc_collect (); |
a3770a81 | 3795 | |
2a9a326b | 3796 | timevar_pop (TV_REST_OF_COMPILATION); |
4291d9c8 RS |
3797 | } |
3798 | \f | |
b8468bc7 NC |
3799 | static void |
3800 | display_help () | |
3801 | { | |
854a97f0 KH |
3802 | int undoc; |
3803 | unsigned long i; | |
3804 | const char *lang; | |
3805 | ||
5e4adfba PT |
3806 | printf (_(" -ffixed-<register> Mark <register> as being unavailable to the compiler\n")); |
3807 | printf (_(" -fcall-used-<register> Mark <register> as being corrupted by function calls\n")); | |
3808 | printf (_(" -fcall-saved-<register> Mark <register> as being preserved across functions\n")); | |
3809 | printf (_(" -finline-limit=<number> Limits the size of inlined functions to <number>\n")); | |
3810 | printf (_(" -fmessage-length=<number> Limits diagnostics messages lengths to <number> characters per line. 0 suppresses line-wrapping\n")); | |
e6513023 | 3811 | printf (_(" -fdiagnostics-show-location=[once | every-line] Indicates how often source location information should be emitted, as prefix, at the beginning of diagnostics when line-wrapping\n")); |
b8468bc7 | 3812 | |
b6a1cbae | 3813 | for (i = ARRAY_SIZE (f_options); i--;) |
b8468bc7 | 3814 | { |
854a97f0 KH |
3815 | const char *description = f_options[i].description; |
3816 | ||
b8468bc7 NC |
3817 | if (description != NULL && * description != 0) |
3818 | printf (" -f%-21s %s\n", | |
a6371940 | 3819 | f_options[i].string, _(description)); |
b8468bc7 | 3820 | } |
854a97f0 | 3821 | |
5e4adfba PT |
3822 | printf (_(" -O[number] Set optimisation level to [number]\n")); |
3823 | printf (_(" -Os Optimise for space rather than speed\n")); | |
639bc36c | 3824 | for (i = LAST_PARAM; i--;) |
1c4c47db JO |
3825 | { |
3826 | const char *description = compiler_params[i].help; | |
3827 | const int length = 21-strlen(compiler_params[i].option); | |
3828 | ||
3829 | if (description != NULL && * description != 0) | |
3830 | printf (" --param %s=<value>%.*s%s\n", | |
3831 | compiler_params[i].option, | |
3832 | length > 0 ? length : 1, " ", | |
a6371940 | 3833 | _(description)); |
1c4c47db | 3834 | } |
89abf8d1 | 3835 | printf (_(" -pedantic Issue warnings needed by strict compliance to ISO C\n")); |
5e4adfba PT |
3836 | printf (_(" -pedantic-errors Like -pedantic except that errors are produced\n")); |
3837 | printf (_(" -w Suppress warnings\n")); | |
3838 | printf (_(" -W Enable extra warnings\n")); | |
854a97f0 | 3839 | |
b6a1cbae | 3840 | for (i = ARRAY_SIZE (W_options); i--;) |
b8468bc7 | 3841 | { |
854a97f0 KH |
3842 | const char *description = W_options[i].description; |
3843 | ||
b8468bc7 NC |
3844 | if (description != NULL && * description != 0) |
3845 | printf (" -W%-21s %s\n", | |
a6371940 | 3846 | W_options[i].string, _(description)); |
b8468bc7 | 3847 | } |
854a97f0 | 3848 | |
5e4adfba | 3849 | printf (_(" -Wunused Enable unused warnings\n")); |
5e4adfba PT |
3850 | printf (_(" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n")); |
3851 | printf (_(" -p Enable function profiling\n")); | |
b8468bc7 | 3852 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) |
5e4adfba | 3853 | printf (_(" -a Enable block profiling \n")); |
854a97f0 | 3854 | #endif |
b8468bc7 | 3855 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT |
5e4adfba | 3856 | printf (_(" -ax Enable jump profiling \n")); |
854a97f0 | 3857 | #endif |
5e4adfba PT |
3858 | printf (_(" -o <file> Place output into <file> \n")); |
3859 | printf (_("\ | |
3860 | -G <number> Put global and static data smaller than <number>\n\ | |
3861 | bytes into a special section (on some targets)\n")); | |
854a97f0 | 3862 | |
b6a1cbae | 3863 | for (i = ARRAY_SIZE (debug_args); i--;) |
b8468bc7 NC |
3864 | { |
3865 | if (debug_args[i].description != NULL) | |
854a97f0 | 3866 | printf (" -g%-21s %s\n", |
a6371940 | 3867 | debug_args[i].arg, _(debug_args[i].description)); |
b8468bc7 | 3868 | } |
854a97f0 | 3869 | |
c47af4b7 | 3870 | printf (_(" -aux-info <file> Emit declaration info into <file>\n")); |
5e4adfba PT |
3871 | printf (_(" -quiet Do not display functions compiled or elapsed time\n")); |
3872 | printf (_(" -version Display the compiler's version\n")); | |
3873 | printf (_(" -d[letters] Enable dumps from specific passes of the compiler\n")); | |
3874 | printf (_(" -dumpbase <file> Base name to be used for dumps from specific passes\n")); | |
7b5efe21 | 3875 | #if defined INSN_SCHEDULING |
5e4adfba | 3876 | printf (_(" -fsched-verbose=<number> Set the verbosity level of the scheduler\n")); |
b8468bc7 | 3877 | #endif |
5e4adfba | 3878 | printf (_(" --help Display this information\n")); |
b8468bc7 NC |
3879 | |
3880 | undoc = 0; | |
3881 | lang = "language"; | |
854a97f0 | 3882 | |
b8468bc7 NC |
3883 | /* Display descriptions of language specific options. |
3884 | If there is no description, note that there is an undocumented option. | |
3885 | If the description is empty, do not display anything. (This allows | |
3886 | options to be deliberately undocumented, for whatever reason). | |
3887 | If the option string is missing, then this is a marker, indicating | |
630962bf | 3888 | that the description string is in fact the name of a language, whose |
b8468bc7 | 3889 | language specific options are to follow. */ |
854a97f0 | 3890 | |
b6a1cbae | 3891 | if (ARRAY_SIZE (documented_lang_options) > 1) |
b8468bc7 | 3892 | { |
5e4adfba | 3893 | printf (_("\nLanguage specific options:\n")); |
b8468bc7 | 3894 | |
b6a1cbae | 3895 | for (i = 0; i < ARRAY_SIZE (documented_lang_options); i++) |
b8468bc7 | 3896 | { |
854a97f0 KH |
3897 | const char *description = documented_lang_options[i].description; |
3898 | const char *option = documented_lang_options[i].option; | |
b8468bc7 NC |
3899 | |
3900 | if (description == NULL) | |
844642e6 NC |
3901 | { |
3902 | undoc = 1; | |
3903 | ||
3904 | if (extra_warnings) | |
5e4adfba | 3905 | printf (_(" %-23.23s [undocumented]\n"), option); |
844642e6 | 3906 | } |
854a97f0 | 3907 | else if (*description == 0) |
b8468bc7 NC |
3908 | continue; |
3909 | else if (option == NULL) | |
3910 | { | |
3911 | if (undoc) | |
3912 | printf | |
5e4adfba | 3913 | (_("\nThere are undocumented %s specific options as well.\n"), |
b8468bc7 NC |
3914 | lang); |
3915 | undoc = 0; | |
854a97f0 | 3916 | |
5e4adfba | 3917 | printf (_("\n Options for %s:\n"), description); |
b8468bc7 NC |
3918 | |
3919 | lang = description; | |
3920 | } | |
3921 | else | |
a6371940 | 3922 | printf (" %-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
3923 | } |
3924 | } | |
3925 | ||
3926 | if (undoc) | |
854a97f0 KH |
3927 | printf (_("\nThere are undocumented %s specific options as well.\n"), |
3928 | lang); | |
b8468bc7 | 3929 | |
10501d8f CC |
3930 | display_target_options (); |
3931 | } | |
3932 | ||
8f54374e | 3933 | static void |
10501d8f CC |
3934 | display_target_options () |
3935 | { | |
3936 | int undoc,i; | |
10501d8f | 3937 | |
b6a1cbae | 3938 | if (ARRAY_SIZE (target_switches) > 1 |
b8468bc7 | 3939 | #ifdef TARGET_OPTIONS |
b6a1cbae | 3940 | || ARRAY_SIZE (target_options) > 1 |
b8468bc7 NC |
3941 | #endif |
3942 | ) | |
3943 | { | |
3944 | int doc = 0; | |
854a97f0 | 3945 | |
b8468bc7 | 3946 | undoc = 0; |
854a97f0 | 3947 | |
5e4adfba | 3948 | printf (_("\nTarget specific options:\n")); |
b8468bc7 | 3949 | |
b6a1cbae | 3950 | for (i = ARRAY_SIZE (target_switches); i--;) |
b8468bc7 | 3951 | { |
854a97f0 KH |
3952 | const char *option = target_switches[i].name; |
3953 | const char *description = target_switches[i].description; | |
b8468bc7 | 3954 | |
854a97f0 | 3955 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3956 | continue; |
3957 | else if (description == NULL) | |
844642e6 NC |
3958 | { |
3959 | undoc = 1; | |
854a97f0 | 3960 | |
844642e6 | 3961 | if (extra_warnings) |
10501d8f | 3962 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 3963 | } |
b8468bc7 | 3964 | else if (* description != 0) |
a6371940 | 3965 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 | 3966 | } |
854a97f0 KH |
3967 | |
3968 | #ifdef TARGET_OPTIONS | |
b6a1cbae | 3969 | for (i = ARRAY_SIZE (target_options); i--;) |
b8468bc7 | 3970 | { |
854a97f0 KH |
3971 | const char *option = target_options[i].prefix; |
3972 | const char *description = target_options[i].description; | |
b8468bc7 | 3973 | |
854a97f0 | 3974 | if (option == NULL || *option == 0) |
b8468bc7 NC |
3975 | continue; |
3976 | else if (description == NULL) | |
844642e6 NC |
3977 | { |
3978 | undoc = 1; | |
854a97f0 | 3979 | |
844642e6 | 3980 | if (extra_warnings) |
10501d8f | 3981 | printf (_(" -m%-23.23s [undocumented]\n"), option); |
844642e6 | 3982 | } |
b8468bc7 | 3983 | else if (* description != 0) |
a6371940 | 3984 | doc += printf (" -m%-23.23s %s\n", option, _(description)); |
b8468bc7 NC |
3985 | } |
3986 | #endif | |
3987 | if (undoc) | |
ff59bfe6 JM |
3988 | { |
3989 | if (doc) | |
5e4adfba | 3990 | printf (_("\nThere are undocumented target specific options as well.\n")); |
ff59bfe6 | 3991 | else |
5e4adfba | 3992 | printf (_(" They exist, but they are not documented.\n")); |
ff59bfe6 | 3993 | } |
b8468bc7 NC |
3994 | } |
3995 | } | |
39dd8003 NC |
3996 | \f |
3997 | /* Parse a -d... comand line switch. */ | |
3998 | ||
3999 | static void | |
4000 | decode_d_option (arg) | |
854a97f0 | 4001 | const char *arg; |
39dd8003 | 4002 | { |
61098249 RH |
4003 | int i, c, matched; |
4004 | ||
4005 | while (*arg) | |
4006 | switch (c = *arg++) | |
39dd8003 NC |
4007 | { |
4008 | case 'a': | |
dbbbbf3b | 4009 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 | 4010 | dump_file[i].enabled = 1; |
39dd8003 NC |
4011 | break; |
4012 | case 'A': | |
4013 | flag_debug_asm = 1; | |
4014 | break; | |
39dd8003 NC |
4015 | case 'p': |
4016 | flag_print_asm_name = 1; | |
4017 | break; | |
c349e40b SC |
4018 | case 'P': |
4019 | flag_dump_rtl_in_asm = 1; | |
4020 | flag_print_asm_name = 1; | |
4021 | break; | |
39dd8003 NC |
4022 | case 'v': |
4023 | graph_dump_format = vcg; | |
4024 | break; | |
39dd8003 NC |
4025 | case 'x': |
4026 | rtl_dump_and_exit = 1; | |
4027 | break; | |
4028 | case 'y': | |
4029 | set_yydebug (1); | |
4030 | break; | |
39dd8003 NC |
4031 | case 'D': /* These are handled by the preprocessor. */ |
4032 | case 'I': | |
4033 | break; | |
61098249 | 4034 | |
39dd8003 | 4035 | default: |
61098249 | 4036 | matched = 0; |
dbbbbf3b | 4037 | for (i = 0; i < (int) DFI_MAX; ++i) |
61098249 RH |
4038 | if (c == dump_file[i].debug_switch) |
4039 | { | |
4040 | dump_file[i].enabled = 1; | |
4041 | matched = 1; | |
4042 | } | |
4043 | ||
4044 | if (! matched) | |
4045 | warning ("unrecognized gcc debugging option: %c", c); | |
39dd8003 NC |
4046 | break; |
4047 | } | |
4048 | } | |
b8468bc7 | 4049 | |
39dd8003 NC |
4050 | /* Parse a -f... comand line switch. ARG is the value after the -f. |
4051 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4052 | Return the number of strings consumed. */ | |
b8468bc7 NC |
4053 | |
4054 | static int | |
39dd8003 | 4055 | decode_f_option (arg) |
854a97f0 | 4056 | const char *arg; |
b8468bc7 | 4057 | { |
39dd8003 | 4058 | int j; |
6f5ef761 | 4059 | const char *option_value = NULL; |
39dd8003 NC |
4060 | |
4061 | /* Search for the option in the table of binary f options. */ | |
b6a1cbae | 4062 | for (j = ARRAY_SIZE (f_options); j--;) |
39dd8003 NC |
4063 | { |
4064 | if (!strcmp (arg, f_options[j].string)) | |
4065 | { | |
4066 | *f_options[j].variable = f_options[j].on_value; | |
4067 | return 1; | |
4068 | } | |
854a97f0 | 4069 | |
39dd8003 NC |
4070 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' |
4071 | && ! strcmp (arg + 3, f_options[j].string)) | |
4072 | { | |
4073 | *f_options[j].variable = ! f_options[j].on_value; | |
4074 | return 1; | |
4075 | } | |
4076 | } | |
b8468bc7 | 4077 | |
de6c5979 BL |
4078 | if (!strcmp (arg, "fast-math")) |
4079 | set_fast_math_flags(); | |
4080 | else if (!strcmp (arg, "no-fast-math")) | |
4081 | set_no_fast_math_flags(); | |
4082 | else if ((option_value = skip_leading_substring (arg, "inline-limit-")) | |
4083 | || (option_value = skip_leading_substring (arg, "inline-limit="))) | |
c6d9a88c | 4084 | { |
5262d6b6 | 4085 | int val = |
c6d9a88c MM |
4086 | read_integral_parameter (option_value, arg - 2, |
4087 | MAX_INLINE_INSNS); | |
4088 | set_param_value ("max-inline-insns", val); | |
4089 | } | |
39dd8003 | 4090 | #ifdef INSN_SCHEDULING |
6f5ef761 GDR |
4091 | else if ((option_value = skip_leading_substring (arg, "sched-verbose="))) |
4092 | fix_sched_param ("verbose", option_value); | |
4093 | #endif | |
4094 | else if ((option_value = skip_leading_substring (arg, "fixed-"))) | |
4095 | fix_register (option_value, 1, 1); | |
4096 | else if ((option_value = skip_leading_substring (arg, "call-used-"))) | |
4097 | fix_register (option_value, 0, 1); | |
4098 | else if ((option_value = skip_leading_substring (arg, "call-saved-"))) | |
4099 | fix_register (option_value, 0, 0); | |
4100 | else if ((option_value = skip_leading_substring (arg, "align-loops="))) | |
4101 | align_loops = read_integral_parameter (option_value, arg - 2, align_loops); | |
4102 | else if ((option_value = skip_leading_substring (arg, "align-functions="))) | |
4559fd9e | 4103 | align_functions |
6f5ef761 GDR |
4104 | = read_integral_parameter (option_value, arg - 2, align_functions); |
4105 | else if ((option_value = skip_leading_substring (arg, "align-jumps="))) | |
4106 | align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps); | |
4107 | else if ((option_value = skip_leading_substring (arg, "align-labels="))) | |
4108 | align_labels | |
4109 | = read_integral_parameter (option_value, arg - 2, align_labels); | |
4110 | else if ((option_value | |
854a97f0 | 4111 | = skip_leading_substring (arg, "stack-limit-register="))) |
6f5ef761 GDR |
4112 | { |
4113 | int reg = decode_reg_name (option_value); | |
a157febd | 4114 | if (reg < 0) |
6f5ef761 | 4115 | error ("unrecognized register name `%s'", option_value); |
a157febd GK |
4116 | else |
4117 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
4118 | } | |
6f5ef761 | 4119 | else if ((option_value |
854a97f0 | 4120 | = skip_leading_substring (arg, "stack-limit-symbol="))) |
a157febd | 4121 | { |
520a57c8 | 4122 | const char *nm; |
1f8f4a0b | 4123 | nm = ggc_strdup (option_value); |
a157febd GK |
4124 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm); |
4125 | } | |
764dbbf2 GDR |
4126 | else if ((option_value |
4127 | = skip_leading_substring (arg, "message-length="))) | |
9596ddd6 GDR |
4128 | output_set_maximum_length |
4129 | (&global_dc->buffer, read_integral_parameter | |
4130 | (option_value, arg - 2, diagnostic_line_cutoff (global_dc))); | |
764dbbf2 | 4131 | else if ((option_value |
854a97f0 | 4132 | = skip_leading_substring (arg, "diagnostics-show-location="))) |
764dbbf2 GDR |
4133 | { |
4134 | if (!strcmp (option_value, "once")) | |
9596ddd6 | 4135 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; |
764dbbf2 | 4136 | else if (!strcmp (option_value, "every-line")) |
9596ddd6 GDR |
4137 | diagnostic_prefixing_rule (global_dc) |
4138 | = DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE; | |
764dbbf2 | 4139 | else |
854a97f0 | 4140 | error ("Unrecognized option `%s'", arg - 2); |
764dbbf2 | 4141 | } |
a157febd GK |
4142 | else if (!strcmp (arg, "no-stack-limit")) |
4143 | stack_limit_rtx = NULL_RTX; | |
39dd8003 NC |
4144 | else if (!strcmp (arg, "preprocessed")) |
4145 | /* Recognise this switch but do nothing. This prevents warnings | |
4dbba876 | 4146 | about an unrecognized switch if cpplib has not been linked in. */ |
39dd8003 | 4147 | ; |
1f50b029 | 4148 | else |
39dd8003 NC |
4149 | return 0; |
4150 | ||
4151 | return 1; | |
4152 | } | |
4153 | ||
4154 | /* Parse a -W... comand line switch. ARG is the value after the -W. | |
4155 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4156 | Return the number of strings consumed. */ | |
4559fd9e | 4157 | |
39dd8003 NC |
4158 | static int |
4159 | decode_W_option (arg) | |
854a97f0 | 4160 | const char *arg; |
39dd8003 | 4161 | { |
6f5ef761 | 4162 | const char *option_value = NULL; |
39dd8003 | 4163 | int j; |
854a97f0 | 4164 | |
39dd8003 NC |
4165 | /* Search for the option in the table of binary W options. */ |
4166 | ||
b6a1cbae | 4167 | for (j = ARRAY_SIZE (W_options); j--;) |
39dd8003 NC |
4168 | { |
4169 | if (!strcmp (arg, W_options[j].string)) | |
4170 | { | |
4171 | *W_options[j].variable = W_options[j].on_value; | |
4172 | return 1; | |
4173 | } | |
4174 | ||
4175 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4176 | && ! strcmp (arg + 3, W_options[j].string)) | |
4177 | { | |
4178 | *W_options[j].variable = ! W_options[j].on_value; | |
4179 | return 1; | |
4180 | } | |
4181 | } | |
4182 | ||
6f5ef761 | 4183 | if ((option_value = skip_leading_substring (arg, "id-clash-"))) |
84b77836 | 4184 | warning ("-Wid-clash-LEN is no longer supported"); |
6f5ef761 | 4185 | else if ((option_value = skip_leading_substring (arg, "larger-than-"))) |
39dd8003 | 4186 | { |
6f5ef761 | 4187 | larger_than_size = read_integral_parameter (option_value, arg - 2, -1); |
4559fd9e | 4188 | |
e9770d51 | 4189 | warn_larger_than = larger_than_size != -1; |
39dd8003 | 4190 | } |
078721e1 AC |
4191 | else if (!strcmp (arg, "unused")) |
4192 | { | |
4193 | set_Wunused (1); | |
4194 | } | |
4195 | else if (!strcmp (arg, "no-unused")) | |
4196 | { | |
4197 | set_Wunused (0); | |
4198 | } | |
39dd8003 | 4199 | else |
b8468bc7 | 4200 | return 0; |
39dd8003 NC |
4201 | |
4202 | return 1; | |
4203 | } | |
4204 | ||
4205 | /* Parse a -g... comand line switch. ARG is the value after the -g. | |
4206 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4207 | Return the number of strings consumed. */ | |
14a774a9 | 4208 | |
39dd8003 NC |
4209 | static int |
4210 | decode_g_option (arg) | |
854a97f0 | 4211 | const char *arg; |
39dd8003 | 4212 | { |
84a5b4f8 | 4213 | static unsigned level=0; |
39dd8003 NC |
4214 | /* A lot of code assumes write_symbols == NO_DEBUG if the |
4215 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4216 | of what debugging type has been selected). This records the | |
4217 | selected type. It is an error to specify more than one | |
4218 | debugging type. */ | |
4219 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
4220 | /* Non-zero if debugging format has been explicitly set. | |
4221 | -g and -ggdb don't explicitly set the debugging format so | |
4222 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4223 | static int type_explicitly_set_p = 0; | |
4224 | /* Indexed by enum debug_info_type. */ | |
854a97f0 | 4225 | static const char *debug_type_names[] = |
39dd8003 NC |
4226 | { |
4227 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff" | |
4228 | }; | |
854a97f0 | 4229 | |
39dd8003 NC |
4230 | /* The maximum admissible debug level value. */ |
4231 | static const unsigned max_debug_level = 3; | |
854a97f0 | 4232 | |
39dd8003 NC |
4233 | /* Look up ARG in the table. */ |
4234 | for (da = debug_args; da->arg; da++) | |
4235 | { | |
4236 | const int da_len = strlen (da->arg); | |
4237 | ||
4238 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
4239 | { | |
4240 | enum debug_info_type type = da->debug_type; | |
854a97f0 KH |
4241 | const char *p = arg + da_len; |
4242 | ||
39dd8003 NC |
4243 | if (*p && (*p < '0' || *p > '9')) |
4244 | continue; | |
854a97f0 | 4245 | |
39dd8003 NC |
4246 | /* A debug flag without a level defaults to level 2. |
4247 | Note we do not want to call read_integral_parameter | |
854a97f0 | 4248 | for that case since it will call atoi which |
39dd8003 | 4249 | will return zero. |
854a97f0 KH |
4250 | |
4251 | ??? We may want to generalize the interface to | |
39dd8003 NC |
4252 | read_integral_parameter to better handle this case |
4253 | if this case shows up often. */ | |
4254 | if (*p) | |
4255 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
4256 | else | |
84a5b4f8 | 4257 | level = (level == 0) ? 2 : level; |
854a97f0 | 4258 | |
39dd8003 NC |
4259 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) |
4260 | { | |
4261 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
4262 | level, level); | |
4263 | if (level == 2) | |
4264 | error ("use -gdwarf-2 for DWARF v2"); | |
4265 | } | |
854a97f0 | 4266 | |
39dd8003 NC |
4267 | if (level > max_debug_level) |
4268 | { | |
4269 | warning ("\ | |
4270 | ignoring option `%s' due to invalid debug level specification", | |
4271 | arg - 2); | |
4272 | level = debug_info_level; | |
4273 | } | |
4274 | ||
4275 | if (type == NO_DEBUG) | |
4276 | { | |
4277 | type = PREFERRED_DEBUGGING_TYPE; | |
854a97f0 | 4278 | |
39dd8003 NC |
4279 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) |
4280 | { | |
4281 | #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2) | |
4282 | type = DWARF2_DEBUG; | |
4283 | #else | |
4284 | #ifdef DBX_DEBUGGING_INFO | |
4285 | type = DBX_DEBUG; | |
4286 | #endif | |
4287 | #endif | |
4288 | } | |
4289 | } | |
854a97f0 | 4290 | |
39dd8003 | 4291 | if (type == NO_DEBUG) |
14a774a9 | 4292 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4293 | |
4294 | /* Does it conflict with an already selected type? */ | |
4295 | if (type_explicitly_set_p | |
854a97f0 | 4296 | /* -g/-ggdb don't conflict with anything. */ |
39dd8003 NC |
4297 | && da->debug_type != NO_DEBUG |
4298 | && type != selected_debug_type) | |
4299 | warning ("`%s' ignored, conflicts with `-g%s'", | |
4300 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
4301 | else | |
4302 | { | |
4303 | /* If the format has already been set, -g/-ggdb | |
4304 | only change the debug level. */ | |
4305 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
854a97f0 KH |
4306 | /* Don't change debugging type. */ |
4307 | ; | |
39dd8003 NC |
4308 | else |
4309 | { | |
4310 | selected_debug_type = type; | |
4311 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
4312 | } | |
854a97f0 | 4313 | |
39dd8003 NC |
4314 | write_symbols = (level == 0 |
4315 | ? NO_DEBUG | |
4316 | : selected_debug_type); | |
4317 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
4318 | debug_info_level = (enum debug_info_level) level; | |
4319 | } | |
854a97f0 | 4320 | |
39dd8003 NC |
4321 | break; |
4322 | } | |
4323 | } | |
854a97f0 | 4324 | |
39dd8003 | 4325 | if (! da->arg) |
04324727 | 4326 | return 0; |
39dd8003 NC |
4327 | |
4328 | return 1; | |
4329 | } | |
4330 | ||
4331 | /* Decode the first argument in the argv as a language-independent option. | |
319ea138 | 4332 | Return the number of strings consumed. */ |
854a97f0 | 4333 | |
13eb1f7f | 4334 | static unsigned int |
319ea138 | 4335 | independent_decode_option (argc, argv) |
39dd8003 | 4336 | int argc; |
13eb1f7f | 4337 | char **argv; |
39dd8003 | 4338 | { |
13eb1f7f | 4339 | char *arg = argv[0]; |
854a97f0 | 4340 | |
39dd8003 | 4341 | if (arg[0] != '-' || arg[1] == 0) |
b8468bc7 | 4342 | { |
39dd8003 NC |
4343 | if (arg[0] == '+') |
4344 | return 0; | |
854a97f0 | 4345 | |
39dd8003 NC |
4346 | filename = arg; |
4347 | ||
4348 | return 1; | |
b8468bc7 | 4349 | } |
39dd8003 | 4350 | |
854a97f0 KH |
4351 | arg++; |
4352 | ||
39dd8003 NC |
4353 | if (!strcmp (arg, "-help")) |
4354 | { | |
4355 | display_help (); | |
cb773845 | 4356 | exit_after_options = 1; |
39dd8003 NC |
4357 | } |
4358 | ||
10501d8f CC |
4359 | if (!strcmp (arg, "-target-help")) |
4360 | { | |
4361 | display_target_options (); | |
cb773845 | 4362 | exit_after_options = 1; |
10501d8f CC |
4363 | } |
4364 | ||
f4cdc368 ZW |
4365 | if (!strcmp (arg, "-version")) |
4366 | { | |
4367 | print_version (stderr, ""); | |
cb773845 | 4368 | exit_after_options = 1; |
f4cdc368 ZW |
4369 | } |
4370 | ||
c6d9a88c MM |
4371 | /* Handle '--param <name>=<value>'. */ |
4372 | if (strcmp (arg, "-param") == 0) | |
4373 | { | |
4374 | char *equal; | |
4375 | ||
4376 | if (argc == 1) | |
4377 | { | |
4378 | error ("-param option missing argument"); | |
4379 | return 1; | |
4380 | } | |
4381 | ||
7521b913 | 4382 | /* Get the '<name>=<value>' parameter. */ |
c6d9a88c MM |
4383 | arg = argv[1]; |
4384 | /* Look for the `='. */ | |
4385 | equal = strchr (arg, '='); | |
5262d6b6 | 4386 | if (!equal) |
c6d9a88c | 4387 | error ("invalid --param option: %s", arg); |
5262d6b6 | 4388 | else |
c6d9a88c MM |
4389 | { |
4390 | int val; | |
4391 | ||
4392 | /* Zero out the `=' sign so that we get two separate strings. */ | |
4393 | *equal = '\0'; | |
4394 | /* Figure out what value is specified. */ | |
4395 | val = read_integral_parameter (equal + 1, NULL, INVALID_PARAM_VAL); | |
4396 | if (val != INVALID_PARAM_VAL) | |
4397 | set_param_value (arg, val); | |
4398 | else | |
4399 | error ("invalid parameter value `%s'", equal + 1); | |
4400 | } | |
4401 | ||
4402 | return 2; | |
4403 | } | |
5262d6b6 | 4404 | |
854a97f0 KH |
4405 | if (*arg == 'Y') |
4406 | arg++; | |
4407 | ||
13eb1f7f | 4408 | switch (*arg) |
b8468bc7 | 4409 | { |
39dd8003 NC |
4410 | default: |
4411 | return 0; | |
854a97f0 | 4412 | |
39dd8003 NC |
4413 | case 'O': |
4414 | /* Already been treated in main (). Do nothing. */ | |
4415 | break; | |
854a97f0 | 4416 | |
39dd8003 NC |
4417 | case 'm': |
4418 | set_target_switch (arg + 1); | |
4419 | break; | |
4420 | ||
4421 | case 'f': | |
4422 | return decode_f_option (arg + 1); | |
854a97f0 | 4423 | |
39dd8003 | 4424 | case 'g': |
319ea138 | 4425 | return decode_g_option (arg + 1); |
39dd8003 NC |
4426 | |
4427 | case 'd': | |
4428 | if (!strcmp (arg, "dumpbase")) | |
4429 | { | |
4430 | if (argc == 1) | |
4431 | return 0; | |
854a97f0 | 4432 | |
39dd8003 NC |
4433 | dump_base_name = argv[1]; |
4434 | return 2; | |
4435 | } | |
4436 | else | |
4437 | decode_d_option (arg + 1); | |
4438 | break; | |
4439 | ||
4440 | case 'p': | |
4441 | if (!strcmp (arg, "pedantic")) | |
4442 | pedantic = 1; | |
4443 | else if (!strcmp (arg, "pedantic-errors")) | |
4444 | flag_pedantic_errors = pedantic = 1; | |
4445 | else if (arg[1] == 0) | |
4446 | profile_flag = 1; | |
4447 | else | |
4448 | return 0; | |
4449 | break; | |
4450 | ||
4451 | case 'q': | |
4452 | if (!strcmp (arg, "quiet")) | |
4453 | quiet_flag = 1; | |
4454 | else | |
4455 | return 0; | |
4456 | break; | |
4457 | ||
4458 | case 'v': | |
4459 | if (!strcmp (arg, "version")) | |
4460 | version_flag = 1; | |
4461 | else | |
4462 | return 0; | |
4463 | break; | |
4464 | ||
4465 | case 'w': | |
4466 | if (arg[1] == 0) | |
4467 | inhibit_warnings = 1; | |
4468 | else | |
4469 | return 0; | |
4470 | break; | |
4471 | ||
4472 | case 'W': | |
4473 | if (arg[1] == 0) | |
4474 | { | |
4475 | extra_warnings = 1; | |
4476 | /* We save the value of warn_uninitialized, since if they put | |
4477 | -Wuninitialized on the command line, we need to generate a | |
4478 | warning about not using it without also specifying -O. */ | |
4479 | if (warn_uninitialized != 1) | |
4480 | warn_uninitialized = 2; | |
4481 | } | |
4482 | else | |
4483 | return decode_W_option (arg + 1); | |
4484 | break; | |
854a97f0 | 4485 | |
39dd8003 NC |
4486 | case 'a': |
4487 | if (arg[1] == 0) | |
4488 | { | |
4489 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
4490 | warning ("`-a' option (basic block profile) not supported"); | |
4491 | #else | |
4492 | profile_block_flag = (profile_block_flag < 2) ? 1 : 3; | |
4493 | #endif | |
4494 | } | |
4495 | else if (!strcmp (arg, "ax")) | |
b8468bc7 | 4496 | { |
39dd8003 NC |
4497 | #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) |
4498 | warning ("`-ax' option (jump profiling) not supported"); | |
4499 | #else | |
854a97f0 | 4500 | profile_block_flag = (!profile_block_flag |
39dd8003 NC |
4501 | || profile_block_flag == 2) ? 2 : 3; |
4502 | #endif | |
4503 | } | |
4504 | else if (!strncmp (arg, "aux-info", 8)) | |
4505 | { | |
39dd8003 NC |
4506 | if (arg[8] == '\0') |
4507 | { | |
4508 | if (argc == 1) | |
4509 | return 0; | |
854a97f0 | 4510 | |
39dd8003 | 4511 | aux_info_file_name = argv[1]; |
c47af4b7 | 4512 | flag_gen_aux_info = 1; |
39dd8003 NC |
4513 | return 2; |
4514 | } | |
c47af4b7 AO |
4515 | else if (arg[8] == '=') |
4516 | { | |
4517 | aux_info_file_name = arg + 9; | |
4518 | flag_gen_aux_info = 1; | |
4519 | } | |
39dd8003 | 4520 | else |
c47af4b7 | 4521 | return 0; |
39dd8003 NC |
4522 | } |
4523 | else | |
4524 | return 0; | |
4525 | break; | |
4526 | ||
4527 | case 'o': | |
4528 | if (arg[1] == 0) | |
4529 | { | |
4530 | if (argc == 1) | |
4531 | return 0; | |
854a97f0 | 4532 | |
39dd8003 NC |
4533 | asm_file_name = argv[1]; |
4534 | return 2; | |
b8468bc7 | 4535 | } |
39dd8003 NC |
4536 | return 0; |
4537 | ||
4538 | case 'G': | |
4539 | { | |
4540 | int g_switch_val; | |
4541 | int return_val; | |
854a97f0 | 4542 | |
39dd8003 NC |
4543 | if (arg[1] == 0) |
4544 | { | |
4545 | if (argc == 1) | |
4546 | return 0; | |
854a97f0 | 4547 | |
39dd8003 NC |
4548 | g_switch_val = read_integral_parameter (argv[1], 0, -1); |
4549 | return_val = 2; | |
4550 | } | |
4551 | else | |
4552 | { | |
4553 | g_switch_val = read_integral_parameter (arg + 1, 0, -1); | |
4554 | return_val = 1; | |
4555 | } | |
854a97f0 | 4556 | |
39dd8003 NC |
4557 | if (g_switch_val == -1) |
4558 | return_val = 0; | |
4559 | else | |
4560 | { | |
4561 | g_switch_set = TRUE; | |
4562 | g_switch_value = g_switch_val; | |
4563 | } | |
854a97f0 | 4564 | |
39dd8003 NC |
4565 | return return_val; |
4566 | } | |
b8468bc7 | 4567 | } |
854a97f0 | 4568 | |
b8468bc7 NC |
4569 | return 1; |
4570 | } | |
4571 | \f | |
aa5b94de FH |
4572 | /* Entry point of cc1, cc1plus, jc1, f771, etc. |
4573 | Decode command args, then call compile_file. | |
4574 | Exit code is FATAL_EXIT_CODE if can't open files or if there were | |
4575 | any errors, or SUCCESS_EXIT_CODE if compilation succeeded. | |
5262d6b6 | 4576 | |
aa5b94de | 4577 | It is not safe to call this function more than once. */ |
7adfcfed | 4578 | |
4291d9c8 | 4579 | int |
aa5b94de | 4580 | toplev_main (argc, argv) |
4291d9c8 RS |
4581 | int argc; |
4582 | char **argv; | |
4291d9c8 RS |
4583 | { |
4584 | register int i; | |
4291d9c8 RS |
4585 | char *p; |
4586 | ||
4587 | /* save in case md file wants to emit args as a comment. */ | |
4588 | save_argc = argc; | |
4589 | save_argv = argv; | |
4590 | ||
4591 | p = argv[0] + strlen (argv[0]); | |
1a8bb3dd | 4592 | while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) |
128373ac | 4593 | --p; |
4291d9c8 RS |
4594 | progname = p; |
4595 | ||
e1a132c6 RK |
4596 | xmalloc_set_program_name (progname); |
4597 | ||
04650349 PT |
4598 | /* LC_CTYPE determines the character set used by the terminal so it has be set |
4599 | to output messages correctly. */ | |
4600 | ||
d9b53430 | 4601 | #ifdef HAVE_LC_MESSAGES |
04650349 | 4602 | setlocale (LC_CTYPE, ""); |
ab87f8c8 | 4603 | setlocale (LC_MESSAGES, ""); |
04650349 PT |
4604 | #else |
4605 | setlocale (LC_ALL, ""); | |
d9b53430 | 4606 | #endif |
04650349 | 4607 | |
735396d9 KG |
4608 | (void) bindtextdomain (PACKAGE, localedir); |
4609 | (void) textdomain (PACKAGE); | |
ab87f8c8 | 4610 | |
a7023245 ZW |
4611 | /* Install handler for SIGFPE, which may be received while we do |
4612 | compile-time floating point arithmetic. */ | |
4291d9c8 RS |
4613 | signal (SIGFPE, float_signal); |
4614 | ||
a7023245 ZW |
4615 | /* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */ |
4616 | #ifdef SIGSEGV | |
4617 | signal (SIGSEGV, crash_signal); | |
935d4b07 | 4618 | #endif |
a7023245 ZW |
4619 | #ifdef SIGILL |
4620 | signal (SIGILL, crash_signal); | |
4621 | #endif | |
4622 | #ifdef SIGBUS | |
4623 | signal (SIGBUS, crash_signal); | |
4624 | #endif | |
4625 | #ifdef SIGABRT | |
4626 | signal (SIGABRT, crash_signal); | |
4627 | #endif | |
4628 | #if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT) | |
4629 | signal (SIGIOT, crash_signal); | |
4630 | #endif | |
854a97f0 | 4631 | |
4291d9c8 | 4632 | decl_printable_name = decl_name; |
114791ea | 4633 | lang_expand_expr = (lang_expand_expr_t) do_abort; |
4291d9c8 RS |
4634 | |
4635 | /* Initialize whether `char' is signed. */ | |
4636 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
4637 | #ifdef DEFAULT_SHORT_ENUMS | |
4638 | /* Initialize how much space enums occupy, by default. */ | |
4639 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
4640 | #endif | |
4641 | ||
21cd906e | 4642 | /* Initialize the garbage-collector. */ |
d09b562c | 4643 | init_ggc (); |
520a57c8 | 4644 | init_stringpool (); |
a157febd | 4645 | ggc_add_rtx_root (&stack_limit_rtx, 1); |
00262c8a ML |
4646 | ggc_add_tree_root (¤t_function_decl, 1); |
4647 | ggc_add_tree_root (¤t_function_func_begin_label, 1); | |
afe3d090 | 4648 | |
764dbbf2 | 4649 | /* Initialize the diagnostics reporting machinery. */ |
9596ddd6 | 4650 | diagnostic_initialize (global_dc); |
764dbbf2 | 4651 | |
c6d9a88c MM |
4652 | /* Register the language-independent parameters. */ |
4653 | add_params (lang_independent_params, LAST_PARAM); | |
4654 | ||
b53beeb2 | 4655 | /* Perform language-specific options intialization. */ |
ee811cfd NB |
4656 | if (lang_hooks.init_options) |
4657 | (*lang_hooks.init_options) (); | |
b53beeb2 | 4658 | |
4291d9c8 RS |
4659 | /* Scan to see what optimization level has been specified. That will |
4660 | determine the default value of many flags. */ | |
4661 | for (i = 1; i < argc; i++) | |
4662 | { | |
4663 | if (!strcmp (argv[i], "-O")) | |
4664 | { | |
4665 | optimize = 1; | |
16b6e120 | 4666 | optimize_size = 0; |
4291d9c8 RS |
4667 | } |
4668 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4669 | { | |
c6aded7c | 4670 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 | 4671 | char *p = &argv[i][2]; |
854a97f0 | 4672 | |
c6aded7c | 4673 | if ((p[0] == 's') && (p[1] == 0)) |
16b6e120 NC |
4674 | { |
4675 | optimize_size = 1; | |
854a97f0 KH |
4676 | |
4677 | /* Optimizing for size forces optimize to be 2. */ | |
16b6e120 NC |
4678 | optimize = 2; |
4679 | } | |
c6aded7c | 4680 | else |
854a97f0 | 4681 | { |
192babfd TP |
4682 | const int optimize_val = read_integral_parameter (p, p - 2, -1); |
4683 | if (optimize_val != -1) | |
16b6e120 | 4684 | { |
192babfd | 4685 | optimize = optimize_val; |
16b6e120 NC |
4686 | optimize_size = 0; |
4687 | } | |
c6aded7c | 4688 | } |
4291d9c8 RS |
4689 | } |
4690 | } | |
4691 | ||
201556f0 JJ |
4692 | if (!optimize) |
4693 | { | |
4694 | flag_merge_constants = 0; | |
4695 | } | |
4696 | ||
4291d9c8 RS |
4697 | if (optimize >= 1) |
4698 | { | |
6731a3e3 | 4699 | flag_defer_pop = 1; |
4291d9c8 RS |
4700 | flag_thread_jumps = 1; |
4701 | #ifdef DELAY_SLOTS | |
4702 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4703 | #endif |
4704 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4705 | flag_omit_frame_pointer = 1; | |
4291d9c8 | 4706 | #endif |
3ff51205 | 4707 | flag_guess_branch_prob = 1; |
4291d9c8 RS |
4708 | } |
4709 | ||
4710 | if (optimize >= 2) | |
4711 | { | |
db8cb48e | 4712 | flag_optimize_sibling_calls = 1; |
4291d9c8 | 4713 | flag_cse_follow_jumps = 1; |
8b3686ed | 4714 | flag_cse_skip_blocks = 1; |
7506f491 | 4715 | flag_gcse = 1; |
4291d9c8 RS |
4716 | flag_expensive_optimizations = 1; |
4717 | flag_strength_reduce = 1; | |
4718 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4719 | flag_rerun_loop_opt = 1; |
ac266247 | 4720 | flag_caller_saves = 1; |
4ac8e06e | 4721 | flag_force_mem = 1; |
ede7cd44 | 4722 | flag_peephole2 = 1; |
4291d9c8 RS |
4723 | #ifdef INSN_SCHEDULING |
4724 | flag_schedule_insns = 1; | |
4725 | flag_schedule_insns_after_reload = 1; | |
4726 | #endif | |
8c660648 | 4727 | flag_regmove = 1; |
3f9a83a9 | 4728 | flag_strict_aliasing = 1; |
b6d24183 | 4729 | flag_delete_null_pointer_checks = 1; |
58d8c980 | 4730 | flag_reorder_blocks = 1; |
4291d9c8 RS |
4731 | } |
4732 | ||
7e89c3a3 RK |
4733 | if (optimize >= 3) |
4734 | { | |
4735 | flag_inline_functions = 1; | |
2b2a8f1f | 4736 | flag_rename_registers = 1; |
7e89c3a3 RK |
4737 | } |
4738 | ||
efa3896a GK |
4739 | if (optimize < 2 || optimize_size) |
4740 | { | |
4741 | align_loops = 1; | |
4742 | align_jumps = 1; | |
4743 | align_labels = 1; | |
4744 | align_functions = 1; | |
4745 | } | |
4746 | ||
c1da383f DE |
4747 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
4748 | modify it. */ | |
4749 | target_flags = 0; | |
4750 | set_target_switch (""); | |
4751 | ||
fc85e1ad | 4752 | /* Unwind tables are always present in an ABI-conformant IA-64 |
854a97f0 | 4753 | object file, so the default should be ON. */ |
fc85e1ad AH |
4754 | #ifdef IA64_UNWIND_INFO |
4755 | flag_unwind_tables = IA64_UNWIND_INFO; | |
4756 | #endif | |
4757 | ||
4291d9c8 RS |
4758 | #ifdef OPTIMIZATION_OPTIONS |
4759 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 4760 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
4761 | #endif |
4762 | ||
4763 | /* Initialize register usage now so switches may override. */ | |
4764 | init_reg_sets (); | |
4765 | ||
39dd8003 NC |
4766 | /* Perform normal command line switch decoding. */ |
4767 | for (i = 1; i < argc;) | |
4291d9c8 | 4768 | { |
57883c53 MM |
4769 | int lang_processed; |
4770 | int indep_processed; | |
f88b51fc | 4771 | |
39dd8003 | 4772 | /* Give the language a chance to decode the option for itself. */ |
ee811cfd | 4773 | lang_processed = (*lang_hooks.decode_option) (argc - i, argv + i); |
43a8f6d5 | 4774 | |
57883c53 MM |
4775 | if (lang_processed >= 0) |
4776 | /* Now see if the option also has a language independent meaning. | |
4777 | Some options are both language specific and language independent, | |
4778 | eg --help. */ | |
4779 | indep_processed = independent_decode_option (argc - i, argv + i); | |
4780 | else | |
4781 | { | |
4782 | lang_processed = -lang_processed; | |
4783 | indep_processed = 0; | |
4784 | } | |
39dd8003 NC |
4785 | |
4786 | if (lang_processed || indep_processed) | |
04324727 | 4787 | i += MAX (lang_processed, indep_processed); |
39dd8003 | 4788 | else |
43a8f6d5 | 4789 | { |
854a97f0 KH |
4790 | const char *option = NULL; |
4791 | const char *lang = NULL; | |
0c70c30f | 4792 | unsigned int j; |
854a97f0 | 4793 | |
0c70c30f NC |
4794 | /* It is possible that the command line switch is not valid for the |
4795 | current language, but it is valid for another language. In order | |
4796 | to be compatible with previous versions of the compiler (which | |
4797 | did not issue an error message in this case) we check for this | |
bc83ee59 | 4798 | possibility here. If we do find a match, then if extra_warnings |
0c70c30f NC |
4799 | is set we generate a warning message, otherwise we will just |
4800 | ignore the option. */ | |
b6a1cbae | 4801 | for (j = 0; j < ARRAY_SIZE (documented_lang_options); j++) |
0c70c30f NC |
4802 | { |
4803 | option = documented_lang_options[j].option; | |
854a97f0 | 4804 | |
0c70c30f NC |
4805 | if (option == NULL) |
4806 | lang = documented_lang_options[j].description; | |
4807 | else if (! strncmp (argv[i], option, strlen (option))) | |
4808 | break; | |
4809 | } | |
4810 | ||
b6a1cbae | 4811 | if (j != ARRAY_SIZE (documented_lang_options)) |
0c70c30f NC |
4812 | { |
4813 | if (extra_warnings) | |
4814 | { | |
4815 | warning ("Ignoring command line option '%s'", argv[i]); | |
4816 | if (lang) | |
04324727 RK |
4817 | warning |
4818 | ("(It is valid for %s but not the selected language)", | |
4819 | lang); | |
0c70c30f NC |
4820 | } |
4821 | } | |
337aa8ed | 4822 | else if (argv[i][0] == '-' && argv[i][1] == 'g') |
04324727 | 4823 | warning ("`%s': unknown or unsupported -g option", &argv[i][2]); |
0c70c30f | 4824 | else |
4dbba876 | 4825 | error ("Unrecognized option `%s'", argv[i]); |
854a97f0 | 4826 | |
43a8f6d5 JM |
4827 | i++; |
4828 | } | |
4291d9c8 | 4829 | } |
854a97f0 | 4830 | |
cd2a3ba2 NB |
4831 | /* All command line options have been processed. */ |
4832 | if (lang_hooks.post_options) | |
4833 | (*lang_hooks.post_options) (); | |
4834 | ||
cb773845 ZW |
4835 | if (exit_after_options) |
4836 | exit (0); | |
4837 | ||
f602c208 RK |
4838 | /* Checker uses the frame pointer. */ |
4839 | if (flag_check_memory_usage) | |
4840 | flag_omit_frame_pointer = 0; | |
4841 | ||
f246a305 RS |
4842 | if (optimize == 0) |
4843 | { | |
a2468e45 BK |
4844 | /* Inlining does not work if not optimizing, |
4845 | so force it not to be done. */ | |
f246a305 RS |
4846 | flag_no_inline = 1; |
4847 | warn_inline = 0; | |
a2468e45 | 4848 | |
ee811cfd | 4849 | /* The c_decode_option function and decode_option hook set |
a2468e45 BK |
4850 | this to `2' if -Wall is used, so we can avoid giving out |
4851 | lots of errors for people who don't realize what -Wall does. */ | |
4852 | if (warn_uninitialized == 1) | |
4853 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
4854 | } |
4855 | ||
d558416e MM |
4856 | /* We do not currently support sibling-call optimization in the |
4857 | presence of exceptions. See PR2975 for a test-case that will | |
4858 | fail if we try to combine both of these features. */ | |
4859 | if (flag_exceptions) | |
4860 | flag_optimize_sibling_calls = 0; | |
4861 | ||
4291d9c8 RS |
4862 | #ifdef OVERRIDE_OPTIONS |
4863 | /* Some machines may reject certain combinations of options. */ | |
4864 | OVERRIDE_OPTIONS; | |
4865 | #endif | |
4866 | ||
efa3896a GK |
4867 | /* Set up the align_*_log variables, defaulting them to 1 if they |
4868 | were still unset. */ | |
4869 | if (align_loops <= 0) align_loops = 1; | |
854a97f0 | 4870 | align_loops_log = floor_log2 (align_loops * 2 - 1); |
efa3896a | 4871 | if (align_jumps <= 0) align_jumps = 1; |
854a97f0 | 4872 | align_jumps_log = floor_log2 (align_jumps * 2 - 1); |
efa3896a | 4873 | if (align_labels <= 0) align_labels = 1; |
854a97f0 | 4874 | align_labels_log = floor_log2 (align_labels * 2 - 1); |
efa3896a | 4875 | if (align_functions <= 0) align_functions = 1; |
854a97f0 KH |
4876 | align_functions_log = floor_log2 (align_functions * 2 - 1); |
4877 | ||
ec6c615d RK |
4878 | if (profile_block_flag == 3) |
4879 | { | |
4880 | warning ("`-ax' and `-a' are conflicting options. `-a' ignored."); | |
4881 | profile_block_flag = 2; | |
4882 | } | |
4883 | ||
4291d9c8 RS |
4884 | /* Unrolling all loops implies that standard loop unrolling must also |
4885 | be done. */ | |
4886 | if (flag_unroll_all_loops) | |
4887 | flag_unroll_loops = 1; | |
4888 | /* Loop unrolling requires that strength_reduction be on also. Silently | |
4889 | turn on strength reduction here if it isn't already on. Also, the loop | |
4890 | unrolling code assumes that cse will be run after loop, so that must | |
4891 | be turned on also. */ | |
4892 | if (flag_unroll_loops) | |
4893 | { | |
4894 | flag_strength_reduce = 1; | |
4895 | flag_rerun_cse_after_loop = 1; | |
4896 | } | |
4897 | ||
4898 | /* Warn about options that are not supported on this machine. */ | |
4899 | #ifndef INSN_SCHEDULING | |
4900 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
4901 | warning ("instruction scheduling not supported on this target machine"); | |
4902 | #endif | |
4903 | #ifndef DELAY_SLOTS | |
4904 | if (flag_delayed_branch) | |
4905 | warning ("this target machine does not have delayed branches"); | |
4906 | #endif | |
4907 | ||
4da5f005 MM |
4908 | /* Some operating systems do not allow profiling without a frame |
4909 | pointer. */ | |
4910 | if (!TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER | |
4911 | && profile_flag | |
4912 | && flag_omit_frame_pointer) | |
4913 | { | |
4914 | error ("profiling does not work without a frame pointer"); | |
4915 | flag_omit_frame_pointer = 0; | |
4916 | } | |
4917 | ||
19283265 RH |
4918 | user_label_prefix = USER_LABEL_PREFIX; |
4919 | if (flag_leading_underscore != -1) | |
4920 | { | |
854a97f0 | 4921 | /* If the default prefix is more complicated than "" or "_", |
19283265 RH |
4922 | issue a warning and ignore this option. */ |
4923 | if (user_label_prefix[0] == 0 || | |
4924 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
4925 | { | |
4926 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
4927 | } | |
4928 | else | |
4929 | warning ("-f%sleading-underscore not supported on this target machine", | |
4930 | flag_leading_underscore ? "" : "no-"); | |
4931 | } | |
4932 | ||
4291d9c8 RS |
4933 | /* If we are in verbose mode, write out the version and maybe all the |
4934 | option flags in use. */ | |
4935 | if (version_flag) | |
4936 | { | |
3d5cdd42 | 4937 | print_version (stderr, ""); |
4291d9c8 | 4938 | if (! quiet_flag) |
3d5cdd42 | 4939 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
4940 | } |
4941 | ||
4291d9c8 RS |
4942 | compile_file (filename); |
4943 | ||
4291d9c8 | 4944 | if (errorcount) |
7adfcfed | 4945 | return (FATAL_EXIT_CODE); |
4291d9c8 | 4946 | if (sorrycount) |
7adfcfed KG |
4947 | return (FATAL_EXIT_CODE); |
4948 | return (SUCCESS_EXIT_CODE); | |
43a8f6d5 | 4949 | } |
4291d9c8 RS |
4950 | \f |
4951 | /* Decode -m switches. */ | |
4291d9c8 RS |
4952 | /* Decode the switch -mNAME. */ |
4953 | ||
114791ea | 4954 | static void |
4291d9c8 | 4955 | set_target_switch (name) |
854a97f0 | 4956 | const char *name; |
4291d9c8 | 4957 | { |
85066503 | 4958 | register size_t j; |
ab87f8c8 | 4959 | int valid_target_option = 0; |
4291d9c8 | 4960 | |
b6a1cbae | 4961 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
4291d9c8 RS |
4962 | if (!strcmp (target_switches[j].name, name)) |
4963 | { | |
4964 | if (target_switches[j].value < 0) | |
4965 | target_flags &= ~-target_switches[j].value; | |
4966 | else | |
4967 | target_flags |= target_switches[j].value; | |
ab87f8c8 | 4968 | valid_target_option = 1; |
4291d9c8 RS |
4969 | } |
4970 | ||
4971 | #ifdef TARGET_OPTIONS | |
ab87f8c8 | 4972 | if (!valid_target_option) |
b6a1cbae | 4973 | for (j = 0; j < ARRAY_SIZE (target_options); j++) |
4291d9c8 RS |
4974 | { |
4975 | int len = strlen (target_options[j].prefix); | |
4976 | if (!strncmp (target_options[j].prefix, name, len)) | |
4977 | { | |
4978 | *target_options[j].variable = name + len; | |
ab87f8c8 | 4979 | valid_target_option = 1; |
4291d9c8 RS |
4980 | } |
4981 | } | |
4982 | #endif | |
4983 | ||
ab87f8c8 | 4984 | if (!valid_target_option) |
4291d9c8 RS |
4985 | error ("Invalid option `%s'", name); |
4986 | } | |
4987 | \f | |
3d5cdd42 DE |
4988 | /* Print version information to FILE. |
4989 | Each line begins with INDENT (for the case where FILE is the | |
4990 | assembler output file). */ | |
4291d9c8 | 4991 | |
114791ea | 4992 | static void |
3d5cdd42 DE |
4993 | print_version (file, indent) |
4994 | FILE *file; | |
87e11268 | 4995 | const char *indent; |
4291d9c8 | 4996 | { |
3d5cdd42 | 4997 | #ifndef __VERSION__ |
ab87f8c8 | 4998 | #define __VERSION__ "[?]" |
3d5cdd42 | 4999 | #endif |
ab87f8c8 JL |
5000 | fnotice (file, |
5001 | #ifdef __GNUC__ | |
f4cdc368 | 5002 | "%s%s%s version %s (%s)\n%s\tcompiled by GNU C version %s.\n" |
3d5cdd42 | 5003 | #else |
ab87f8c8 | 5004 | "%s%s%s version %s (%s) compiled by CC.\n" |
3d5cdd42 | 5005 | #endif |
ab87f8c8 | 5006 | , indent, *indent != 0 ? " " : "", |
f4cdc368 ZW |
5007 | language_string, version_string, TARGET_NAME, |
5008 | indent, __VERSION__); | |
3d5cdd42 | 5009 | } |
4291d9c8 | 5010 | |
3d5cdd42 | 5011 | /* Print an option value and return the adjusted position in the line. |
309a8875 DE |
5012 | ??? We don't handle error returns from fprintf (disk full); presumably |
5013 | other code will catch a disk full though. */ | |
4291d9c8 | 5014 | |
114791ea | 5015 | static int |
3d5cdd42 DE |
5016 | print_single_switch (file, pos, max, indent, sep, term, type, name) |
5017 | FILE *file; | |
5018 | int pos, max; | |
87e11268 | 5019 | const char *indent, *sep, *term, *type, *name; |
3d5cdd42 | 5020 | { |
309a8875 DE |
5021 | /* The ultrix fprintf returns 0 on success, so compute the result we want |
5022 | here since we need it for the following test. */ | |
5023 | int len = strlen (sep) + strlen (type) + strlen (name); | |
5024 | ||
3d5cdd42 | 5025 | if (pos != 0 |
309a8875 | 5026 | && pos + len > max) |
4291d9c8 | 5027 | { |
3d5cdd42 DE |
5028 | fprintf (file, "%s", term); |
5029 | pos = 0; | |
4291d9c8 | 5030 | } |
3d5cdd42 DE |
5031 | if (pos == 0) |
5032 | { | |
309a8875 DE |
5033 | fprintf (file, "%s", indent); |
5034 | pos = strlen (indent); | |
3d5cdd42 | 5035 | } |
309a8875 DE |
5036 | fprintf (file, "%s%s%s", sep, type, name); |
5037 | pos += len; | |
3d5cdd42 | 5038 | return pos; |
4291d9c8 | 5039 | } |
854a97f0 | 5040 | |
3d5cdd42 DE |
5041 | /* Print active target switches to FILE. |
5042 | POS is the current cursor position and MAX is the size of a "line". | |
5043 | Each line begins with INDENT and ends with TERM. | |
5044 | Each switch is separated from the next by SEP. */ | |
4291d9c8 | 5045 | |
25074193 | 5046 | static void |
3d5cdd42 DE |
5047 | print_switch_values (file, pos, max, indent, sep, term) |
5048 | FILE *file; | |
5049 | int pos, max; | |
87e11268 | 5050 | const char *indent, *sep, *term; |
4291d9c8 | 5051 | { |
85066503 | 5052 | size_t j; |
3d5cdd42 DE |
5053 | char **p; |
5054 | ||
5055 | /* Print the options as passed. */ | |
4291d9c8 | 5056 | |
3d5cdd42 | 5057 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
ab87f8c8 | 5058 | _("options passed: "), ""); |
3d5cdd42 | 5059 | |
520e7ff5 | 5060 | for (p = &save_argv[1]; *p != NULL; p++) |
3d5cdd42 DE |
5061 | if (**p == '-') |
5062 | { | |
5063 | /* Ignore these. */ | |
520e7ff5 DE |
5064 | if (strcmp (*p, "-o") == 0) |
5065 | { | |
5066 | if (p[1] != NULL) | |
5067 | p++; | |
5068 | continue; | |
5069 | } | |
3d5cdd42 DE |
5070 | if (strcmp (*p, "-quiet") == 0) |
5071 | continue; | |
5072 | if (strcmp (*p, "-version") == 0) | |
5073 | continue; | |
5074 | if ((*p)[1] == 'd') | |
5075 | continue; | |
5076 | ||
5077 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
5078 | } | |
5079 | if (pos > 0) | |
5080 | fprintf (file, "%s", term); | |
5081 | ||
5082 | /* Print the -f and -m options that have been enabled. | |
5083 | We don't handle language specific options but printing argv | |
5084 | should suffice. */ | |
5085 | ||
5086 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
ab87f8c8 | 5087 | _("options enabled: "), ""); |
4291d9c8 | 5088 | |
b6a1cbae | 5089 | for (j = 0; j < ARRAY_SIZE (f_options); j++) |
4291d9c8 | 5090 | if (*f_options[j].variable == f_options[j].on_value) |
3d5cdd42 DE |
5091 | pos = print_single_switch (file, pos, max, indent, sep, term, |
5092 | "-f", f_options[j].string); | |
4291d9c8 | 5093 | |
3d5cdd42 | 5094 | /* Print target specific options. */ |
4291d9c8 | 5095 | |
b6a1cbae | 5096 | for (j = 0; j < ARRAY_SIZE (target_switches); j++) |
4291d9c8 RS |
5097 | if (target_switches[j].name[0] != '\0' |
5098 | && target_switches[j].value > 0 | |
5099 | && ((target_switches[j].value & target_flags) | |
5100 | == target_switches[j].value)) | |
3d5cdd42 DE |
5101 | { |
5102 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
5103 | "-m", target_switches[j].name); | |
3d5cdd42 DE |
5104 | } |
5105 | ||
5106 | #ifdef TARGET_OPTIONS | |
b6a1cbae | 5107 | for (j = 0; j < ARRAY_SIZE (target_options); j++) |
3d5cdd42 DE |
5108 | if (*target_options[j].variable != NULL) |
5109 | { | |
5110 | char prefix[256]; | |
5111 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
5112 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
5113 | prefix, *target_options[j].variable); | |
5114 | } | |
5115 | #endif | |
4291d9c8 | 5116 | |
3d5cdd42 | 5117 | fprintf (file, "%s", term); |
4291d9c8 | 5118 | } |