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4291d9c8 | 1 | /* Top level of GNU C compiler |
4559fd9e RK |
2 | Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000 Free Software Foundation, Inc. | |
4291d9c8 RS |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 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 JL |
48 | #include "insn-codes.h" |
49 | #include "insn-config.h" | |
23280139 | 50 | #include "hard-reg-set.h" |
e5e809f4 | 51 | #include "recog.h" |
d0d4af87 | 52 | #include "defaults.h" |
e14417fa | 53 | #include "output.h" |
3d195391 | 54 | #include "except.h" |
49ad7cfa | 55 | #include "function.h" |
a0c8e1b2 | 56 | #include "toplev.h" |
114791ea | 57 | #include "expr.h" |
b1eeb243 | 58 | #include "basic-block.h" |
ab87f8c8 | 59 | #include "intl.h" |
0a25f1f5 | 60 | #include "ggc.h" |
6a2cc2ac | 61 | #include "graph.h" |
272df862 | 62 | #include "loop.h" |
d0af450d | 63 | #include "regs.h" |
2a9a326b | 64 | #include "timevar.h" |
f246a305 | 65 | |
f73ad30e JH |
66 | #ifndef ACCUMULATE_OUTGOING_ARGS |
67 | #define ACCUMULATE_OUTGOING_ARGS 0 | |
68 | #endif | |
69 | ||
76ead72b RL |
70 | #ifdef DWARF_DEBUGGING_INFO |
71 | #include "dwarfout.h" | |
72 | #endif | |
73 | ||
74 | #if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO) | |
75 | #include "dwarf2out.h" | |
76 | #endif | |
77 | ||
4f70758f | 78 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) |
76ead72b RL |
79 | #include "dbxout.h" |
80 | #endif | |
81 | ||
82 | #ifdef SDB_DEBUGGING_INFO | |
83 | #include "sdbout.h" | |
84 | #endif | |
85 | ||
f246a305 RS |
86 | #ifdef XCOFF_DEBUGGING_INFO |
87 | #include "xcoffout.h" | |
88 | #endif | |
4291d9c8 RS |
89 | \f |
90 | #ifdef VMS | |
91 | /* The extra parameters substantially improve the I/O performance. */ | |
92 | static FILE * | |
37c9f674 | 93 | vms_fopen (fname, type) |
4291d9c8 RS |
94 | char * fname; |
95 | char * type; | |
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 | } |
37c9f674 RK |
108 | #define fopen vms_fopen |
109 | #endif /* VMS */ | |
4291d9c8 RS |
110 | |
111 | #ifndef DEFAULT_GDB_EXTENSIONS | |
112 | #define DEFAULT_GDB_EXTENSIONS 1 | |
113 | #endif | |
114 | ||
30657ee3 RK |
115 | /* If more than one debugging type is supported, you must define |
116 | PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way. | |
117 | ||
118 | This is one long line cause VAXC can't handle a \-newline. */ | |
9a666dda | 119 | #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO)) |
30657ee3 RK |
120 | #ifndef PREFERRED_DEBUGGING_TYPE |
121 | You Lose! You must define PREFERRED_DEBUGGING_TYPE! | |
122 | #endif /* no PREFERRED_DEBUGGING_TYPE */ | |
123 | #else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE | |
124 | so the following code needn't care. */ | |
125 | #ifdef DBX_DEBUGGING_INFO | |
126 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG | |
127 | #endif | |
128 | #ifdef SDB_DEBUGGING_INFO | |
129 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG | |
130 | #endif | |
131 | #ifdef DWARF_DEBUGGING_INFO | |
132 | #define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG | |
133 | #endif | |
9a666dda JM |
134 | #ifdef DWARF2_DEBUGGING_INFO |
135 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
136 | #endif | |
30657ee3 RK |
137 | #ifdef XCOFF_DEBUGGING_INFO |
138 | #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG | |
139 | #endif | |
140 | #endif /* More than one debugger format enabled. */ | |
141 | ||
142 | /* If still not defined, must have been because no debugging formats | |
143 | are supported. */ | |
144 | #ifndef PREFERRED_DEBUGGING_TYPE | |
145 | #define PREFERRED_DEBUGGING_TYPE NO_DEBUG | |
146 | #endif | |
147 | ||
f31e826b | 148 | #if defined (HAVE_DECL_ENVIRON) && !HAVE_DECL_ENVIRON |
4291d9c8 | 149 | extern char **environ; |
4d7e336b | 150 | #endif |
4291d9c8 | 151 | |
b0316e35 RS |
152 | /* Carry information from ASM_DECLARE_OBJECT_NAME |
153 | to ASM_FINISH_DECLARE_OBJECT. */ | |
154 | ||
155 | extern int size_directive_output; | |
5e10b3cc | 156 | extern tree last_assemble_variable_decl; |
b0316e35 | 157 | |
58782098 KG |
158 | static void set_target_switch PARAMS ((const char *)); |
159 | static const char *decl_name PARAMS ((tree, int)); | |
6ed551b4 | 160 | |
58782098 KG |
161 | static void float_signal PARAMS ((int)) ATTRIBUTE_NORETURN; |
162 | static void pipe_closed PARAMS ((int)) ATTRIBUTE_NORETURN; | |
444bf316 | 163 | #ifdef ASM_IDENTIFY_LANGUAGE |
47c3ed98 | 164 | /* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */ |
58782098 | 165 | static void output_lang_identify PARAMS ((FILE *)) ATTRIBUTE_UNUSED; |
444bf316 | 166 | #endif |
3b304f5b | 167 | static void compile_file PARAMS ((const char *)); |
58782098 KG |
168 | static void display_help PARAMS ((void)); |
169 | static void mark_file_stack PARAMS ((void *)); | |
170 | ||
171 | static void decode_d_option PARAMS ((const char *)); | |
61098249 RH |
172 | static int decode_f_option PARAMS ((const char *)); |
173 | static int decode_W_option PARAMS ((const char *)); | |
174 | static int decode_g_option PARAMS ((const char *)); | |
13eb1f7f RK |
175 | static unsigned int independent_decode_option PARAMS ((int, char **, |
176 | unsigned int)); | |
58782098 KG |
177 | |
178 | static void print_version PARAMS ((FILE *, const char *)); | |
179 | static int print_single_switch PARAMS ((FILE *, int, int, const char *, | |
87e11268 KG |
180 | const char *, const char *, |
181 | const char *, const char *)); | |
58782098 | 182 | static void print_switch_values PARAMS ((FILE *, int, int, const char *, |
87e11268 | 183 | const char *, const char *)); |
735a0e33 | 184 | |
3d5cdd42 DE |
185 | /* Length of line when printing switch values. */ |
186 | #define MAX_LINE 75 | |
187 | ||
4291d9c8 RS |
188 | /* Name of program invoked, sans directories. */ |
189 | ||
7adfcfed | 190 | const char *progname; |
4291d9c8 RS |
191 | |
192 | /* Copy of arguments to main. */ | |
193 | int save_argc; | |
194 | char **save_argv; | |
195 | \f | |
196 | /* Name of current original source file (what was input to cpp). | |
197 | This comes from each #-command in the actual input. */ | |
198 | ||
3b304f5b | 199 | const char *input_filename; |
4291d9c8 RS |
200 | |
201 | /* Name of top-level original source file (what was input to cpp). | |
202 | This comes from the #-command at the beginning of the actual input. | |
203 | If there isn't any there, then this is the cc1 input file name. */ | |
204 | ||
3b304f5b | 205 | const char *main_input_filename; |
4291d9c8 | 206 | |
4291d9c8 RS |
207 | /* Current line number in real source file. */ |
208 | ||
209 | int lineno; | |
210 | ||
f1db3576 JL |
211 | /* Nonzero if it is unsafe to create any new pseudo registers. */ |
212 | int no_new_pseudos; | |
213 | ||
4291d9c8 RS |
214 | /* Stack of currently pending input files. */ |
215 | ||
216 | struct file_stack *input_file_stack; | |
217 | ||
218 | /* Incremented on each change to input_file_stack. */ | |
219 | int input_file_stack_tick; | |
220 | ||
4291d9c8 RS |
221 | /* Name to use as base of names for dump output files. */ |
222 | ||
87e11268 | 223 | const char *dump_base_name; |
4291d9c8 RS |
224 | |
225 | /* Bit flags that specify the machine subtype we are compiling for. | |
226 | Bits are tested using macros TARGET_... defined in the tm.h file | |
227 | and set by `-m...' switches. Must be defined in rtlanal.c. */ | |
228 | ||
229 | extern int target_flags; | |
230 | ||
61098249 RH |
231 | /* Describes a dump file. */ |
232 | ||
233 | struct dump_file_info | |
234 | { | |
235 | /* The unique extension to apply, e.g. ".jump". */ | |
236 | const char * const extension; | |
237 | ||
238 | /* The -d<c> character that enables this dump file. */ | |
239 | char const debug_switch; | |
240 | ||
241 | /* True if there is a corresponding graph dump file. */ | |
242 | char const graph_dump_p; | |
243 | ||
244 | /* True if the user selected this dump. */ | |
245 | char enabled; | |
246 | ||
247 | /* True if the files have been initialized (ie truncated). */ | |
248 | char initialized; | |
249 | }; | |
250 | ||
251 | /* Enumerate the extant dump files. */ | |
252 | ||
253 | enum dump_file_index | |
254 | { | |
255 | DFI_rtl, | |
48d9ade5 | 256 | DFI_sibling, |
61098249 RH |
257 | DFI_jump, |
258 | DFI_cse, | |
259 | DFI_addressof, | |
260 | DFI_ssa, | |
261 | DFI_ussa, | |
262 | DFI_gcse, | |
263 | DFI_loop, | |
264 | DFI_cse2, | |
51891abe | 265 | DFI_cfg, |
61098249 | 266 | DFI_bp, |
51891abe | 267 | DFI_life, |
61098249 | 268 | DFI_combine, |
9ec6d7ab | 269 | DFI_ce, |
61098249 RH |
270 | DFI_regmove, |
271 | DFI_sched, | |
272 | DFI_lreg, | |
273 | DFI_greg, | |
274 | DFI_flow2, | |
9ec6d7ab | 275 | DFI_ce2, |
61098249 | 276 | DFI_peephole2, |
5fa41e13 | 277 | DFI_rnreg, |
61098249 RH |
278 | DFI_sched2, |
279 | DFI_bbro, | |
280 | DFI_jump2, | |
281 | DFI_mach, | |
282 | DFI_dbr, | |
283 | DFI_stack, | |
284 | DFI_MAX | |
285 | }; | |
286 | ||
287 | /* Describes all the dump files. Should be kept in order of the | |
9ec6d7ab RH |
288 | pass and in sync with dump_file_index above. |
289 | ||
290 | Remaining -d letters: | |
291 | ||
292 | " h o q u " | |
293 | " H K OPQ TUVWXYZ" | |
294 | */ | |
61098249 RH |
295 | |
296 | struct dump_file_info dump_file[DFI_MAX] = | |
297 | { | |
298 | { "rtl", 'r', 0, 0, 0 }, | |
48d9ade5 | 299 | { "sibling", 'i', 0, 0, 0 }, |
61098249 RH |
300 | { "jump", 'j', 0, 0, 0 }, |
301 | { "cse", 's', 0, 0, 0 }, | |
302 | { "addressof", 'F', 0, 0, 0 }, | |
303 | { "ssa", 'e', 1, 0, 0 }, | |
304 | { "ussa", 'e', 1, 0, 0 }, /* Yes, duplicate enable switch. */ | |
305 | { "gcse", 'G', 1, 0, 0 }, | |
306 | { "loop", 'L', 1, 0, 0 }, | |
307 | { "cse2", 't', 1, 0, 0 }, | |
51891abe | 308 | { "cfg", 'f', 1, 0, 0 }, |
61098249 | 309 | { "bp", 'b', 1, 0, 0 }, |
51891abe | 310 | { "life", 'f', 1, 0, 0 }, /* Yes, duplicate enable switch. */ |
61098249 | 311 | { "combine", 'c', 1, 0, 0 }, |
9ec6d7ab | 312 | { "ce", 'C', 1, 0, 0 }, |
61098249 RH |
313 | { "regmove", 'N', 1, 0, 0 }, |
314 | { "sched", 'S', 1, 0, 0 }, | |
315 | { "lreg", 'l', 1, 0, 0 }, | |
316 | { "greg", 'g', 1, 0, 0 }, | |
317 | { "flow2", 'w', 1, 0, 0 }, | |
9ec6d7ab | 318 | { "ce2", 'E', 1, 0, 0 }, |
61098249 | 319 | { "peephole2", 'z', 1, 0, 0 }, |
5fa41e13 | 320 | { "rnreg", 'n', 1, 0, 0 }, |
61098249 RH |
321 | { "sched2", 'R', 1, 0, 0 }, |
322 | { "bbro", 'B', 1, 0, 0 }, | |
323 | { "jump2", 'J', 1, 0, 0 }, | |
324 | { "mach", 'M', 1, 0, 0 }, | |
325 | { "dbr", 'd', 0, 0, 0 }, | |
326 | { "stack", 'k', 1, 0, 0 }, | |
327 | }; | |
328 | ||
329 | static int open_dump_file PARAMS ((enum dump_file_index, tree)); | |
330 | static void close_dump_file PARAMS ((enum dump_file_index, | |
331 | void (*) (FILE *, rtx), rtx)); | |
332 | ||
333 | /* Other flags saying which kinds of debugging dump have been requested. */ | |
334 | ||
335 | int rtl_dump_and_exit; | |
336 | int flag_print_asm_name; | |
337 | static int flag_print_mem; | |
338 | static int version_flag; | |
339 | static char * filename; | |
735a0e33 | 340 | enum graph_dump_types graph_dump_format; |
4291d9c8 RS |
341 | |
342 | /* Name for output file of assembly code, specified with -o. */ | |
343 | ||
344 | char *asm_file_name; | |
345 | ||
346 | /* Value of the -G xx switch, and whether it was passed or not. */ | |
347 | int g_switch_value; | |
348 | int g_switch_set; | |
349 | ||
350 | /* Type(s) of debugging information we are producing (if any). | |
351 | See flags.h for the definitions of the different possible | |
352 | types of debugging information. */ | |
353 | enum debug_info_type write_symbols = NO_DEBUG; | |
354 | ||
355 | /* Level of debugging information we are producing. See flags.h | |
356 | for the definitions of the different possible levels. */ | |
357 | enum debug_info_level debug_info_level = DINFO_LEVEL_NONE; | |
358 | ||
a53d0bcc RS |
359 | /* Nonzero means use GNU-only extensions in the generated symbolic |
360 | debugging information. */ | |
361 | /* Currently, this only has an effect when write_symbols is set to | |
362 | DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */ | |
363 | int use_gnu_debug_info_extensions = 0; | |
4291d9c8 RS |
364 | |
365 | /* Nonzero means do optimizations. -O. | |
366 | Particular numeric values stand for particular amounts of optimization; | |
367 | thus, -O2 stores 2 here. However, the optimizations beyond the basic | |
368 | ones are not controlled directly by this variable. Instead, they are | |
369 | controlled by individual `flag_...' variables that are defaulted | |
370 | based on this variable. */ | |
371 | ||
372 | int optimize = 0; | |
373 | ||
c6aded7c AG |
374 | /* Nonzero means optimize for size. -Os. |
375 | The only valid values are zero and non-zero. When optimize_size is | |
376 | non-zero, optimize defaults to 2, but certain individual code | |
377 | bloating optimizations are disabled. */ | |
378 | ||
379 | int optimize_size = 0; | |
380 | ||
4291d9c8 RS |
381 | /* Number of error messages and warning messages so far. */ |
382 | ||
383 | int errorcount = 0; | |
384 | int warningcount = 0; | |
385 | int sorrycount = 0; | |
386 | ||
00262c8a ML |
387 | /* The FUNCTION_DECL for the function currently being compiled, |
388 | or 0 if between functions. */ | |
389 | tree current_function_decl; | |
390 | ||
391 | /* Set to the FUNC_BEGIN label of the current function, or NULL_TREE | |
392 | if none. */ | |
393 | tree current_function_func_begin_label; | |
394 | ||
a1d7ffe3 JM |
395 | /* Pointer to function to compute the name to use to print a declaration. |
396 | DECL is the declaration in question. | |
397 | VERBOSITY determines what information will be printed: | |
398 | 0: DECL_NAME, demangled as necessary. | |
399 | 1: and scope information. | |
400 | 2: and any other information that might be interesting, such as function | |
401 | parameter types in C++. */ | |
4291d9c8 | 402 | |
58782098 | 403 | const char *(*decl_printable_name) PARAMS ((tree, int)); |
4291d9c8 RS |
404 | |
405 | /* Pointer to function to compute rtl for a language-specific tree code. */ | |
406 | ||
114791ea | 407 | typedef rtx (*lang_expand_expr_t) |
58782098 | 408 | PARAMS ((union tree_node *, rtx, enum machine_mode, |
114791ea KG |
409 | enum expand_modifier modifier)); |
410 | ||
411 | lang_expand_expr_t lang_expand_expr = 0; | |
4291d9c8 | 412 | |
58782098 | 413 | tree (*lang_expand_constant) PARAMS ((tree)) = 0; |
e697e20a | 414 | |
2b599527 RS |
415 | /* Pointer to function to finish handling an incomplete decl at the |
416 | end of compilation. */ | |
417 | ||
58782098 | 418 | void (*incomplete_decl_finalize_hook) PARAMS ((tree)) = 0; |
2b599527 | 419 | |
4291d9c8 RS |
420 | /* Nonzero if generating code to do profiling. */ |
421 | ||
422 | int profile_flag = 0; | |
423 | ||
424 | /* Nonzero if generating code to do profiling on a line-by-line basis. */ | |
425 | ||
426 | int profile_block_flag; | |
427 | ||
0d332add DE |
428 | /* Nonzero if generating code to profile program flow graph arcs. */ |
429 | ||
430 | int profile_arc_flag = 0; | |
431 | ||
432 | /* Nonzero if generating info for gcov to calculate line test coverage. */ | |
433 | ||
434 | int flag_test_coverage = 0; | |
435 | ||
436 | /* Nonzero indicates that branch taken probabilities should be calculated. */ | |
437 | ||
438 | int flag_branch_probabilities = 0; | |
439 | ||
11bdd2ae SC |
440 | /* Nonzero if basic blocks should be reordered. */ |
441 | ||
442 | int flag_reorder_blocks = 0; | |
443 | ||
7b82b5da SC |
444 | /* Nonzero if registers should be renamed */ |
445 | ||
446 | int flag_rename_registers = 0; | |
447 | ||
4291d9c8 RS |
448 | /* Nonzero for -pedantic switch: warn about anything |
449 | that standard spec forbids. */ | |
450 | ||
451 | int pedantic = 0; | |
452 | ||
453 | /* Temporarily suppress certain warnings. | |
454 | This is set while reading code from a system header file. */ | |
455 | ||
456 | int in_system_header = 0; | |
457 | ||
4291d9c8 RS |
458 | /* Don't print functions as they are compiled and don't print |
459 | times taken by the various passes. -quiet. */ | |
460 | ||
461 | int quiet_flag = 0; | |
462 | \f | |
463 | /* -f flags. */ | |
464 | ||
465 | /* Nonzero means `char' should be signed. */ | |
466 | ||
467 | int flag_signed_char; | |
468 | ||
469 | /* Nonzero means give an enum type only as many bytes as it needs. */ | |
470 | ||
471 | int flag_short_enums; | |
472 | ||
473 | /* Nonzero for -fcaller-saves: allocate values in regs that need to | |
474 | be saved across function calls, if that produces overall better code. | |
475 | Optional now, so people can test it. */ | |
476 | ||
477 | #ifdef DEFAULT_CALLER_SAVES | |
478 | int flag_caller_saves = 1; | |
479 | #else | |
480 | int flag_caller_saves = 0; | |
481 | #endif | |
482 | ||
958ec8ca JW |
483 | /* Nonzero if structures and unions should be returned in memory. |
484 | ||
485 | This should only be defined if compatibility with another compiler or | |
486 | with an ABI is needed, because it results in slower code. */ | |
487 | ||
488 | #ifndef DEFAULT_PCC_STRUCT_RETURN | |
489 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
490 | #endif | |
491 | ||
4291d9c8 RS |
492 | /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */ |
493 | ||
958ec8ca | 494 | int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN; |
4291d9c8 RS |
495 | |
496 | /* Nonzero for -fforce-mem: load memory value into a register | |
497 | before arithmetic on it. This makes better cse but slower compilation. */ | |
498 | ||
499 | int flag_force_mem = 0; | |
500 | ||
501 | /* Nonzero for -fforce-addr: load memory address into a register before | |
502 | reference to memory. This makes better cse but slower compilation. */ | |
503 | ||
504 | int flag_force_addr = 0; | |
505 | ||
506 | /* Nonzero for -fdefer-pop: don't pop args after each function call; | |
507 | instead save them up to pop many calls' args with one insns. */ | |
508 | ||
6731a3e3 | 509 | int flag_defer_pop = 0; |
4291d9c8 RS |
510 | |
511 | /* Nonzero for -ffloat-store: don't allocate floats and doubles | |
512 | in extended-precision registers. */ | |
513 | ||
514 | int flag_float_store = 0; | |
515 | ||
516 | /* Nonzero for -fcse-follow-jumps: | |
517 | have cse follow jumps to do a more extensive job. */ | |
518 | ||
519 | int flag_cse_follow_jumps; | |
520 | ||
8b3686ed RK |
521 | /* Nonzero for -fcse-skip-blocks: |
522 | have cse follow a branch around a block. */ | |
523 | int flag_cse_skip_blocks; | |
524 | ||
4291d9c8 RS |
525 | /* Nonzero for -fexpensive-optimizations: |
526 | perform miscellaneous relatively-expensive optimizations. */ | |
527 | int flag_expensive_optimizations; | |
528 | ||
529 | /* Nonzero for -fthread-jumps: | |
530 | have jump optimize output of loop. */ | |
531 | ||
532 | int flag_thread_jumps; | |
533 | ||
534 | /* Nonzero enables strength-reduction in loop.c. */ | |
535 | ||
536 | int flag_strength_reduce = 0; | |
537 | ||
538 | /* Nonzero enables loop unrolling in unroll.c. Only loops for which the | |
539 | number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, | |
540 | UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are | |
541 | unrolled. */ | |
542 | ||
543 | int flag_unroll_loops; | |
544 | ||
545 | /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. | |
546 | This is generally not a win. */ | |
547 | ||
548 | int flag_unroll_all_loops; | |
549 | ||
e5eb27e5 JL |
550 | /* Nonzero forces all invariant computations in loops to be moved |
551 | outside the loop. */ | |
552 | ||
553 | int flag_move_all_movables = 0; | |
554 | ||
555 | /* Nonzero forces all general induction variables in loops to be | |
556 | strength reduced. */ | |
557 | ||
558 | int flag_reduce_all_givs = 0; | |
559 | ||
9ec36da5 JL |
560 | /* Nonzero to perform full register move optimization passes. This is the |
561 | default for -O2. */ | |
562 | ||
563 | int flag_regmove = 0; | |
564 | ||
4291d9c8 RS |
565 | /* Nonzero for -fwritable-strings: |
566 | store string constants in data segment and don't uniquize them. */ | |
567 | ||
568 | int flag_writable_strings = 0; | |
569 | ||
570 | /* Nonzero means don't put addresses of constant functions in registers. | |
571 | Used for compiling the Unix kernel, where strange substitutions are | |
572 | done on the assembly output. */ | |
573 | ||
574 | int flag_no_function_cse = 0; | |
575 | ||
576 | /* Nonzero for -fomit-frame-pointer: | |
577 | don't make a frame pointer in simple functions that don't require one. */ | |
578 | ||
579 | int flag_omit_frame_pointer = 0; | |
580 | ||
cf440348 JL |
581 | /* Nonzero means place each function into its own section on those platforms |
582 | which support arbitrary section names and unlimited numbers of sections. */ | |
583 | ||
584 | int flag_function_sections = 0; | |
585 | ||
fd868572 CM |
586 | /* ... and similar for data. */ |
587 | ||
588 | int flag_data_sections = 0; | |
589 | ||
4291d9c8 RS |
590 | /* Nonzero to inhibit use of define_optimization peephole opts. */ |
591 | ||
592 | int flag_no_peephole = 0; | |
593 | ||
43855b28 JL |
594 | /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math |
595 | operations in the interest of optimization. For example it allows | |
596 | GCC to assume arguments to sqrt are nonnegative numbers, allowing | |
0f41302f | 597 | faster code for sqrt to be generated. */ |
43855b28 JL |
598 | |
599 | int flag_fast_math = 0; | |
600 | ||
db8cb48e JH |
601 | /* Nonzero allows GCC to optimize sibling and tail recursive calls. */ |
602 | ||
603 | int flag_optimize_sibling_calls = 0; | |
604 | ||
41af162c CB |
605 | /* Nonzero means the front end generally wants `errno' maintained by math |
606 | operations, like built-in SQRT, unless overridden by flag_fast_math. */ | |
607 | ||
608 | int flag_errno_math = 1; | |
609 | ||
c64f913e CB |
610 | /* 0 means straightforward implementation of complex divide acceptable. |
611 | 1 means wide ranges of inputs must work for complex divide. | |
612 | 2 means C9X-like requirements for complex divide (not yet implemented). */ | |
613 | ||
614 | int flag_complex_divide_method = 0; | |
615 | ||
4291d9c8 RS |
616 | /* Nonzero means all references through pointers are volatile. */ |
617 | ||
618 | int flag_volatile; | |
c6e75897 | 619 | |
ab87f8c8 | 620 | /* Nonzero means treat all global and extern variables as volatile. */ |
c6e75897 | 621 | |
38d4d0c2 | 622 | int flag_volatile_global; |
4291d9c8 | 623 | |
ab87f8c8 JL |
624 | /* Nonzero means treat all static variables as volatile. */ |
625 | ||
626 | int flag_volatile_static; | |
627 | ||
4291d9c8 RS |
628 | /* Nonzero means just do syntax checking; don't output anything. */ |
629 | ||
630 | int flag_syntax_only = 0; | |
631 | ||
7506f491 DE |
632 | /* Nonzero means perform global cse. */ |
633 | ||
634 | static int flag_gcse; | |
635 | ||
b6d24183 JL |
636 | /* Nonzero means to use global dataflow analysis to eliminate |
637 | useless null pointer tests. */ | |
638 | ||
639 | static int flag_delete_null_pointer_checks; | |
640 | ||
4291d9c8 RS |
641 | /* Nonzero means to rerun cse after loop optimization. This increases |
642 | compilation time about 20% and picks up a few more common expressions. */ | |
643 | ||
644 | static int flag_rerun_cse_after_loop; | |
645 | ||
6d6d0fa0 JL |
646 | /* Nonzero means to run loop optimizations twice. */ |
647 | ||
64fde701 | 648 | int flag_rerun_loop_opt; |
6d6d0fa0 | 649 | |
4291d9c8 RS |
650 | /* Nonzero for -finline-functions: ok to inline functions that look like |
651 | good inline candidates. */ | |
652 | ||
653 | int flag_inline_functions; | |
654 | ||
655 | /* Nonzero for -fkeep-inline-functions: even if we make a function | |
ac2a9454 | 656 | go inline everywhere, keep its definition around for debugging |
4291d9c8 RS |
657 | purposes. */ |
658 | ||
659 | int flag_keep_inline_functions; | |
660 | ||
fadb3bc9 | 661 | /* Nonzero means that functions will not be inlined. */ |
4291d9c8 RS |
662 | |
663 | int flag_no_inline; | |
664 | ||
fbe912dd BK |
665 | /* Nonzero means that we should emit static const variables |
666 | regardless of whether or not optimization is turned on. */ | |
667 | ||
668 | int flag_keep_static_consts = 1; | |
669 | ||
4291d9c8 RS |
670 | /* Nonzero means we should be saving declaration info into a .X file. */ |
671 | ||
672 | int flag_gen_aux_info = 0; | |
673 | ||
f246a305 RS |
674 | /* Specified name of aux-info file. */ |
675 | ||
676 | static char *aux_info_file_name; | |
677 | ||
4291d9c8 RS |
678 | /* Nonzero means make the text shared if supported. */ |
679 | ||
680 | int flag_shared_data; | |
681 | ||
682 | /* Nonzero means schedule into delayed branch slots if supported. */ | |
683 | ||
684 | int flag_delayed_branch; | |
685 | ||
686 | /* Nonzero if we are compiling pure (sharable) code. | |
687 | Value is 1 if we are doing reasonable (i.e. simple | |
688 | offset into offset table) pic. Value is 2 if we can | |
689 | only perform register offsets. */ | |
690 | ||
691 | int flag_pic; | |
692 | ||
3d195391 MS |
693 | /* Nonzero means generate extra code for exception handling and enable |
694 | exception handling. */ | |
695 | ||
b53beeb2 | 696 | int flag_exceptions; |
3d195391 | 697 | |
a1622f83 AM |
698 | /* Nonzero means use the new model for exception handling. Replaces |
699 | -DNEW_EH_MODEL as a compile option. */ | |
700 | ||
6e487a49 | 701 | int flag_new_exceptions = 1; |
a1622f83 | 702 | |
14a774a9 RK |
703 | /* Nonzero means generate frame unwind info table when supported */ |
704 | ||
705 | int flag_unwind_tables = 0; | |
706 | ||
2786cbad | 707 | /* Nonzero means don't place uninitialized global data in common storage |
3d195391 | 708 | by default. */ |
4291d9c8 RS |
709 | |
710 | int flag_no_common; | |
711 | ||
712 | /* Nonzero means pretend it is OK to examine bits of target floats, | |
713 | even if that isn't true. The resulting code will have incorrect constants, | |
714 | but the same series of instructions that the native compiler would make. */ | |
715 | ||
716 | int flag_pretend_float; | |
717 | ||
718 | /* Nonzero means change certain warnings into errors. | |
719 | Usually these are warnings about failure to conform to some standard. */ | |
720 | ||
721 | int flag_pedantic_errors = 0; | |
722 | ||
723 | /* flag_schedule_insns means schedule insns within basic blocks (before | |
724 | local_alloc). | |
725 | flag_schedule_insns_after_reload means schedule insns after | |
726 | global_alloc. */ | |
727 | ||
728 | int flag_schedule_insns = 0; | |
729 | int flag_schedule_insns_after_reload = 0; | |
730 | ||
8c660648 JL |
731 | /* The following flags have effect only for scheduling before register |
732 | allocation: | |
733 | ||
734 | flag_schedule_interblock means schedule insns accross basic blocks. | |
735 | flag_schedule_speculative means allow speculative motion of non-load insns. | |
736 | flag_schedule_speculative_load means allow speculative motion of some | |
737 | load insns. | |
738 | flag_schedule_speculative_load_dangerous allows speculative motion of more | |
8e7336f8 | 739 | load insns. */ |
8c660648 JL |
740 | |
741 | int flag_schedule_interblock = 1; | |
742 | int flag_schedule_speculative = 1; | |
743 | int flag_schedule_speculative_load = 0; | |
744 | int flag_schedule_speculative_load_dangerous = 0; | |
8c660648 JL |
745 | |
746 | /* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple | |
747 | by a cheaper branch, on a count register. */ | |
748 | int flag_branch_on_count_reg; | |
8c660648 | 749 | |
4291d9c8 RS |
750 | /* -finhibit-size-directive inhibits output of .size for ELF. |
751 | This is used only for compiling crtstuff.c, | |
752 | and it may be extended to other effects | |
753 | needed for crtstuff.c on other systems. */ | |
754 | int flag_inhibit_size_directive = 0; | |
755 | ||
9a631e8e RS |
756 | /* -fverbose-asm causes extra commentary information to be produced in |
757 | the generated assembly code (to make it more readable). This option | |
758 | is generally only of use to those who actually need to read the | |
3d5cdd42 | 759 | generated assembly code (perhaps while debugging the compiler itself). |
c85f7c16 | 760 | -fno-verbose-asm, the default, causes the extra information |
3d5cdd42 DE |
761 | to be omitted and is useful when comparing two assembler files. */ |
762 | ||
c85f7c16 | 763 | int flag_verbose_asm = 0; |
9a631e8e | 764 | |
3d5cdd42 DE |
765 | /* -dA causes debug commentary information to be produced in |
766 | the generated assembly code (to make it more readable). This option | |
767 | is generally only of use to those who actually need to read the | |
768 | generated assembly code (perhaps while debugging the compiler itself). | |
769 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
770 | to be a catchall for printing debug information in the assembler file. */ | |
771 | ||
772 | int flag_debug_asm = 0; | |
9a631e8e | 773 | |
4291d9c8 | 774 | /* -fgnu-linker specifies use of the GNU linker for initializations. |
d68c507d RS |
775 | (Or, more generally, a linker that handles initializations.) |
776 | -fno-gnu-linker says that collect2 will be used. */ | |
777 | #ifdef USE_COLLECT2 | |
778 | int flag_gnu_linker = 0; | |
779 | #else | |
4291d9c8 | 780 | int flag_gnu_linker = 1; |
d68c507d | 781 | #endif |
4291d9c8 | 782 | |
d9d4fb43 AS |
783 | /* Enable SSA. */ |
784 | int flag_ssa = 0; | |
785 | ||
566cdc73 MM |
786 | /* Tag all structures with __attribute__(packed) */ |
787 | int flag_pack_struct = 0; | |
788 | ||
bd83d0ac RK |
789 | /* Emit code to check for stack overflow; also may cause large objects |
790 | to be allocated dynamically. */ | |
791 | int flag_stack_check; | |
792 | ||
a157febd GK |
793 | /* When non-NULL, indicates that whenever space is allocated on the |
794 | stack, the resulting stack pointer must not pass this | |
795 | address---that is, for stacks that grow downward, the stack pointer | |
796 | must always be greater than or equal to this address; for stacks | |
797 | that grow upward, the stack pointer must be less than this address. | |
798 | At present, the rtx may be either a REG or a SYMBOL_REF, although | |
799 | the support provided depends on the backend. */ | |
800 | rtx stack_limit_rtx; | |
801 | ||
f602c208 RK |
802 | /* -fcheck-memory-usage causes extra code to be generated in order to check |
803 | memory accesses. This is used by a detector of bad memory accesses such | |
804 | as Checker. */ | |
805 | int flag_check_memory_usage = 0; | |
806 | ||
807 | /* -fprefix-function-name causes function name to be prefixed. This | |
808 | can be used with -fcheck-memory-usage to isolate code compiled with | |
809 | -fcheck-memory-usage. */ | |
810 | int flag_prefix_function_name = 0; | |
811 | ||
9ae8ffe7 JL |
812 | /* 0 if pointer arguments may alias each other. True in C. |
813 | 1 if pointer arguments may not alias each other but may alias | |
814 | global variables. | |
815 | 2 if pointer arguments may not alias each other and may not | |
816 | alias global variables. True in Fortran. | |
817 | This defaults to 0 for C. */ | |
818 | int flag_argument_noalias = 0; | |
819 | ||
41472af8 MM |
820 | /* Nonzero if we should do (language-dependent) alias analysis. |
821 | Typically, this analysis will assume that expressions of certain | |
822 | types do not alias expressions of certain other types. Only used | |
823 | if alias analysis (in general) is enabled. */ | |
824 | int flag_strict_aliasing = 0; | |
825 | ||
07417085 KR |
826 | /* Instrument functions with calls at entry and exit, for profiling. */ |
827 | int flag_instrument_function_entry_exit = 0; | |
828 | ||
be163a70 ZW |
829 | /* Nonzero means ignore `#ident' directives. 0 means handle them. |
830 | On SVR4 targets, it also controls whether or not to emit a | |
831 | string identifying the compiler. */ | |
832 | ||
833 | int flag_no_ident = 0; | |
b8468bc7 | 834 | |
ede7cd44 RH |
835 | /* This will perform a peephole pass before sched2. */ |
836 | int flag_peephole2 = 0; | |
837 | ||
a8aa7975 GM |
838 | /* -fbounded-pointers causes gcc to compile pointers as composite |
839 | objects occupying three words: the pointer value, the base address | |
840 | of the referent object, and the address immediately beyond the end | |
841 | of the referent object. The base and extent allow us to perform | |
842 | runtime bounds checking. -fbounded-pointers implies -fcheck-bounds. */ | |
843 | int flag_bounded_pointers = 0; | |
844 | ||
845 | /* -fcheck-bounds causes gcc to generate array bounds checks. | |
846 | For C, C++: defaults to value of flag_bounded_pointers. | |
847 | For ObjC: defaults to off. | |
848 | For Java: defaults to on. | |
849 | For Fortran: defaults to off. | |
850 | For CHILL: defaults to off. */ | |
851 | int flag_bounds_check = 0; | |
852 | ||
673b5311 MM |
853 | /* If one, renumber instruction UIDs to reduce the number of |
854 | unused UIDs if there are a lot of instructions. If greater than | |
855 | one, unconditionally renumber instruction UIDs. */ | |
856 | int flag_renumber_insns = 1; | |
857 | ||
efa3896a GK |
858 | /* Values of the -falign-* flags: how much to align labels in code. |
859 | 0 means `use default', 1 means `don't align'. | |
860 | For each variable, there is an _log variant which is the power | |
861 | of two not less than the variable, for .align output. */ | |
862 | ||
863 | int align_loops; | |
864 | int align_loops_log; | |
865 | int align_jumps; | |
866 | int align_jumps_log; | |
867 | int align_labels; | |
868 | int align_labels_log; | |
869 | int align_functions; | |
870 | int align_functions_log; | |
871 | ||
b8468bc7 NC |
872 | /* Table of supported debugging formats. */ |
873 | static struct | |
874 | { | |
87e11268 | 875 | const char * arg; |
b8468bc7 NC |
876 | /* Since PREFERRED_DEBUGGING_TYPE isn't necessarily a |
877 | constant expression, we use NO_DEBUG in its place. */ | |
878 | enum debug_info_type debug_type; | |
879 | int use_extensions_p; | |
87e11268 | 880 | const char * description; |
b8468bc7 NC |
881 | } *da, |
882 | debug_args[] = | |
883 | { | |
39dd8003 | 884 | { "", NO_DEBUG, DEFAULT_GDB_EXTENSIONS, |
b8468bc7 | 885 | "Generate default debug format output" }, |
39dd8003 | 886 | { "gdb", NO_DEBUG, 1, "Generate default extended debug format output" }, |
b8468bc7 | 887 | #ifdef DBX_DEBUGGING_INFO |
39dd8003 NC |
888 | { "stabs", DBX_DEBUG, 0, "Generate STABS format debug output" }, |
889 | { "stabs+", DBX_DEBUG, 1, "Generate extended STABS format debug output" }, | |
b8468bc7 NC |
890 | #endif |
891 | #ifdef DWARF_DEBUGGING_INFO | |
39dd8003 NC |
892 | { "dwarf", DWARF_DEBUG, 0, "Generate DWARF-1 format debug output"}, |
893 | { "dwarf+", DWARF_DEBUG, 1, | |
b8468bc7 NC |
894 | "Generated extended DWARF-1 format debug output" }, |
895 | #endif | |
896 | #ifdef DWARF2_DEBUGGING_INFO | |
39dd8003 | 897 | { "dwarf-2", DWARF2_DEBUG, 0, "Enable DWARF-2 debug output" }, |
b8468bc7 NC |
898 | #endif |
899 | #ifdef XCOFF_DEBUGGING_INFO | |
39dd8003 NC |
900 | { "xcoff", XCOFF_DEBUG, 0, "Generate XCOFF format debug output" }, |
901 | { "xcoff+", XCOFF_DEBUG, 1, "Generate extended XCOFF format debug output" }, | |
b8468bc7 NC |
902 | #endif |
903 | #ifdef SDB_DEBUGGING_INFO | |
39dd8003 | 904 | { "coff", SDB_DEBUG, 0, "Generate COFF format debug output" }, |
b8468bc7 | 905 | #endif |
c84e2712 | 906 | { 0, 0, 0, 0 } |
b8468bc7 NC |
907 | }; |
908 | ||
909 | typedef struct | |
910 | { | |
87e11268 | 911 | const char * string; |
b8468bc7 NC |
912 | int * variable; |
913 | int on_value; | |
87e11268 | 914 | const char * description; |
b8468bc7 NC |
915 | } |
916 | lang_independent_options; | |
917 | ||
19283265 RH |
918 | /* Add or remove a leading underscore from user symbols. */ |
919 | int flag_leading_underscore = -1; | |
920 | ||
921 | /* The user symbol prefix after having resolved same. */ | |
87e11268 | 922 | const char *user_label_prefix; |
19283265 RH |
923 | |
924 | /* A default for same. */ | |
925 | #ifndef USER_LABEL_PREFIX | |
926 | #define USER_LABEL_PREFIX "" | |
927 | #endif | |
928 | ||
4291d9c8 RS |
929 | /* Table of language-independent -f options. |
930 | STRING is the option name. VARIABLE is the address of the variable. | |
931 | ON_VALUE is the value to store in VARIABLE | |
932 | if `-fSTRING' is seen as an option. | |
933 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
934 | ||
b8468bc7 | 935 | lang_independent_options f_options[] = |
4291d9c8 | 936 | { |
b8468bc7 NC |
937 | {"float-store", &flag_float_store, 1, |
938 | "Do not store floats in registers" }, | |
939 | {"volatile", &flag_volatile, 1, | |
940 | "Consider all mem refs through pointers as volatile"}, | |
941 | {"volatile-global", &flag_volatile_global, 1, | |
942 | "Consider all mem refs to global data to be volatile" }, | |
ab87f8c8 JL |
943 | {"volatile-static", &flag_volatile_static, 1, |
944 | "Consider all mem refs to static data to be volatile" }, | |
b8468bc7 NC |
945 | {"defer-pop", &flag_defer_pop, 1, |
946 | "Defer popping functions args from stack until later" }, | |
947 | {"omit-frame-pointer", &flag_omit_frame_pointer, 1, | |
948 | "When possible do not generate stack frames"}, | |
db8cb48e JH |
949 | {"optimize-sibling-calls", &flag_optimize_sibling_calls, 1, |
950 | "Optimize sibling and tail recursive calls" }, | |
b8468bc7 NC |
951 | {"cse-follow-jumps", &flag_cse_follow_jumps, 1, |
952 | "When running CSE, follow jumps to their targets" }, | |
953 | {"cse-skip-blocks", &flag_cse_skip_blocks, 1, | |
954 | "When running CSE, follow conditional jumps" }, | |
955 | {"expensive-optimizations", &flag_expensive_optimizations, 1, | |
956 | "Perform a number of minor, expensive optimisations" }, | |
957 | {"thread-jumps", &flag_thread_jumps, 1, | |
958 | "Perform jump threading optimisations"}, | |
959 | {"strength-reduce", &flag_strength_reduce, 1, | |
960 | "Perform strength reduction optimisations" }, | |
961 | {"unroll-loops", &flag_unroll_loops, 1, | |
62e7b719 | 962 | "Perform loop unrolling when iteration count is known" }, |
b8468bc7 | 963 | {"unroll-all-loops", &flag_unroll_all_loops, 1, |
f1da1729 | 964 | "Perform loop unrolling for all loops" }, |
b8468bc7 NC |
965 | {"move-all-movables", &flag_move_all_movables, 1, |
966 | "Force all loop invariant computations out of loops" }, | |
967 | {"reduce-all-givs", &flag_reduce_all_givs, 1, | |
968 | "Strength reduce all loop general induction variables" }, | |
969 | {"writable-strings", &flag_writable_strings, 1, | |
970 | "Store strings in writable data section" }, | |
971 | {"peephole", &flag_no_peephole, 0, | |
972 | "Enable machine specific peephole optimisations" }, | |
973 | {"force-mem", &flag_force_mem, 1, | |
974 | "Copy memory operands into registers before using" }, | |
975 | {"force-addr", &flag_force_addr, 1, | |
976 | "Copy memory address constants into regs before using" }, | |
977 | {"function-cse", &flag_no_function_cse, 0, | |
978 | "Allow function addresses to be held in registers" }, | |
979 | {"inline-functions", &flag_inline_functions, 1, | |
980 | "Integrate simple functions into their callers" }, | |
981 | {"keep-inline-functions", &flag_keep_inline_functions, 1, | |
982 | "Generate code for funcs even if they are fully inlined" }, | |
983 | {"inline", &flag_no_inline, 0, | |
984 | "Pay attention to the 'inline' keyword"}, | |
985 | {"keep-static-consts", &flag_keep_static_consts, 1, | |
986 | "Emit static const variables even if they are not used" }, | |
987 | {"syntax-only", &flag_syntax_only, 1, | |
988 | "Check for syntax errors, then stop" }, | |
989 | {"shared-data", &flag_shared_data, 1, | |
990 | "Mark data as shared rather than private" }, | |
991 | {"caller-saves", &flag_caller_saves, 1, | |
992 | "Enable saving registers around function calls" }, | |
993 | {"pcc-struct-return", &flag_pcc_struct_return, 1, | |
994 | "Return 'short' aggregates in memory, not registers" }, | |
995 | {"reg-struct-return", &flag_pcc_struct_return, 0, | |
996 | "Return 'short' aggregates in registers" }, | |
997 | {"delayed-branch", &flag_delayed_branch, 1, | |
998 | "Attempt to fill delay slots of branch instructions" }, | |
999 | {"gcse", &flag_gcse, 1, | |
1000 | "Perform the global common subexpression elimination" }, | |
1001 | {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1, | |
1002 | "Run CSE pass after loop optimisations"}, | |
1003 | {"rerun-loop-opt", &flag_rerun_loop_opt, 1, | |
1004 | "Run the loop optimiser twice"}, | |
b6d24183 JL |
1005 | {"delete-null-pointer-checks", &flag_delete_null_pointer_checks, 1, |
1006 | "Delete useless null pointer checks" }, | |
b8468bc7 NC |
1007 | {"pretend-float", &flag_pretend_float, 1, |
1008 | "Pretend that host and target use the same FP format"}, | |
1009 | {"schedule-insns", &flag_schedule_insns, 1, | |
1010 | "Reschedule instructions to avoid pipeline stalls"}, | |
1011 | {"schedule-insns2", &flag_schedule_insns_after_reload, 1, | |
1012 | "Run two passes of the instruction scheduler"}, | |
b8468bc7 NC |
1013 | {"sched-interblock",&flag_schedule_interblock, 1, |
1014 | "Enable scheduling across basic blocks" }, | |
1015 | {"sched-spec",&flag_schedule_speculative, 1, | |
1016 | "Allow speculative motion of non-loads" }, | |
1017 | {"sched-spec-load",&flag_schedule_speculative_load, 1, | |
1018 | "Allow speculative motion of some loads" }, | |
1019 | {"sched-spec-load-dangerous",&flag_schedule_speculative_load_dangerous, 1, | |
1020 | "Allow speculative motion of more loads" }, | |
1021 | {"branch-count-reg",&flag_branch_on_count_reg, 1, | |
40f943dd | 1022 | "Replace add,compare,branch with branch on count reg"}, |
b8468bc7 NC |
1023 | {"pic", &flag_pic, 1, |
1024 | "Generate position independent code, if possible"}, | |
1025 | {"PIC", &flag_pic, 2, ""}, | |
1026 | {"exceptions", &flag_exceptions, 1, | |
1027 | "Enable exception handling" }, | |
1028 | {"new-exceptions", &flag_new_exceptions, 1, | |
1029 | "Use the new model for exception handling" }, | |
14a774a9 RK |
1030 | {"unwind-tables", &flag_unwind_tables, 1, |
1031 | "Just generate unwind tables for exception handling" }, | |
b8468bc7 NC |
1032 | {"sjlj-exceptions", &exceptions_via_longjmp, 1, |
1033 | "Use setjmp/longjmp to handle exceptions" }, | |
1034 | {"asynchronous-exceptions", &asynchronous_exceptions, 1, | |
1035 | "Support asynchronous exceptions" }, | |
1036 | {"profile-arcs", &profile_arc_flag, 1, | |
1037 | "Insert arc based program profiling code" }, | |
1038 | {"test-coverage", &flag_test_coverage, 1, | |
1039 | "Create data files needed by gcov" }, | |
1040 | {"branch-probabilities", &flag_branch_probabilities, 1, | |
62e7b719 | 1041 | "Use profiling information for branch probabilities" }, |
11bdd2ae SC |
1042 | {"reorder-blocks", &flag_reorder_blocks, 1, |
1043 | "Reorder basic blocks to improve code placement" }, | |
7b82b5da SC |
1044 | {"rename-registers", &flag_rename_registers, 1, |
1045 | "Do the register renaming optimization pass"}, | |
b8468bc7 NC |
1046 | {"fast-math", &flag_fast_math, 1, |
1047 | "Improve FP speed by violating ANSI & IEEE rules" }, | |
1048 | {"common", &flag_no_common, 0, | |
1049 | "Do not put unitialised globals in the common section" }, | |
1050 | {"inhibit-size-directive", &flag_inhibit_size_directive, 1, | |
1051 | "Do not generate .size directives" }, | |
1052 | {"function-sections", &flag_function_sections, 1, | |
1053 | "place each function into its own section" }, | |
257441db CM |
1054 | {"data-sections", &flag_data_sections, 1, |
1055 | "place data items into their own section" }, | |
b8468bc7 NC |
1056 | {"verbose-asm", &flag_verbose_asm, 1, |
1057 | "Add extra commentry to assembler output"}, | |
1058 | {"gnu-linker", &flag_gnu_linker, 1, | |
1059 | "Output GNU ld formatted global initialisers"}, | |
1060 | {"regmove", &flag_regmove, 1, | |
c84e2712 KG |
1061 | "Enables a register move optimisation"}, |
1062 | {"optimize-register-move", &flag_regmove, 1, | |
1063 | "Do the full regmove optimization pass"}, | |
b8468bc7 NC |
1064 | {"pack-struct", &flag_pack_struct, 1, |
1065 | "Pack structure members together without holes" }, | |
1066 | {"stack-check", &flag_stack_check, 1, | |
1067 | "Insert stack checking code into the program" }, | |
1068 | {"argument-alias", &flag_argument_noalias, 0, | |
1069 | "Specify that arguments may alias each other & globals"}, | |
1070 | {"argument-noalias", &flag_argument_noalias, 1, | |
1071 | "Assume arguments may alias globals but not each other"}, | |
1072 | {"argument-noalias-global", &flag_argument_noalias, 2, | |
1073 | "Assume arguments do not alias each other or globals" }, | |
1074 | {"strict-aliasing", &flag_strict_aliasing, 1, | |
1075 | "Assume strict aliasing rules apply" }, | |
efa3896a GK |
1076 | {"align-loops", &align_loops, 0, |
1077 | "Align the start of loops" }, | |
1078 | {"align-jumps", &align_jumps, 0, | |
1079 | "Align labels which are only reached by jumping" }, | |
1080 | {"align-labels", &align_labels, 0, | |
1081 | "Align all labels" }, | |
1082 | {"align-functions", &align_functions, 0, | |
1083 | "Align the start of functions" }, | |
b8468bc7 NC |
1084 | {"check-memory-usage", &flag_check_memory_usage, 1, |
1085 | "Generate code to check every memory access" }, | |
1086 | {"prefix-function-name", &flag_prefix_function_name, 1, | |
1087 | "Add a prefix to all function names" }, | |
c84e2712 KG |
1088 | {"dump-unnumbered", &flag_dump_unnumbered, 1, |
1089 | "Suppress output of instruction numbers and line number notes in debugging dumps"}, | |
07417085 KR |
1090 | {"instrument-functions", &flag_instrument_function_entry_exit, 1, |
1091 | "Instrument function entry/exit with profiling calls"}, | |
d9d4fb43 AS |
1092 | {"ssa", &flag_ssa, 1, |
1093 | "Enable SSA optimizations" }, | |
19283265 | 1094 | {"leading-underscore", &flag_leading_underscore, 1, |
be163a70 ZW |
1095 | "External symbols have a leading underscore" }, |
1096 | {"ident", &flag_no_ident, 0, | |
ede7cd44 RH |
1097 | "Process #ident directives"}, |
1098 | { "peephole2", &flag_peephole2, 1, | |
9605da8a BL |
1099 | "Enables an rtl peephole pass run before sched2" }, |
1100 | {"math-errno", &flag_errno_math, 1, | |
a8aa7975 GM |
1101 | "Set errno after built-in math functions"}, |
1102 | {"bounded-pointers", &flag_bounded_pointers, 1, | |
1103 | "Compile pointers as triples: value, base & end" }, | |
1104 | {"bounds-check", &flag_bounds_check, 1, | |
1105 | "Generate code to check bounds before dereferencing pointers and arrays" } | |
4291d9c8 | 1106 | }; |
b99933c7 | 1107 | |
b8468bc7 NC |
1108 | #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0])) |
1109 | ||
b99933c7 RS |
1110 | /* Table of language-specific options. */ |
1111 | ||
b8468bc7 NC |
1112 | static struct lang_opt |
1113 | { | |
87e11268 KG |
1114 | const char * option; |
1115 | const char * description; | |
b8468bc7 NC |
1116 | } |
1117 | documented_lang_options[] = | |
b99933c7 | 1118 | { |
b8468bc7 NC |
1119 | /* In order not to overload the --help output, the convention |
1120 | used here is to only describe those options which are not | |
1121 | enabled by default. */ | |
1122 | ||
1123 | { "-ansi", "Compile just for ANSI C" }, | |
1124 | { "-fallow-single-precision", | |
1125 | "Do not promote floats to double if using -traditional" }, | |
6f4d7222 | 1126 | { "-std= ", "Determine language standard"}, |
b8468bc7 NC |
1127 | |
1128 | { "-fsigned-bitfields", "" }, | |
1129 | { "-funsigned-bitfields","Make bitfields by unsigned by default" }, | |
1130 | { "-fno-signed-bitfields", "" }, | |
1131 | { "-fno-unsigned-bitfields","" }, | |
1132 | { "-fsigned-char", "Make 'char' be signed by default"}, | |
1133 | { "-funsigned-char", "Make 'char' be unsigned by default"}, | |
1134 | { "-fno-signed-char", "" }, | |
1135 | { "-fno-unsigned-char", "" }, | |
1136 | ||
1137 | { "-ftraditional", "" }, | |
1138 | { "-traditional", "Attempt to support traditional K&R style C"}, | |
1139 | { "-fnotraditional", "" }, | |
1140 | { "-fno-traditional", "" }, | |
1141 | ||
1142 | { "-fasm", "" }, | |
1143 | { "-fno-asm", "Do not recognise the 'asm' keyword" }, | |
1144 | { "-fbuiltin", "" }, | |
1145 | { "-fno-builtin", "Do not recognise any built in functions" }, | |
1146 | { "-fhosted", "Assume normal C execution environment" }, | |
1147 | { "-fno-hosted", "" }, | |
1148 | { "-ffreestanding", | |
1149 | "Assume that standard libraries & main might not exist" }, | |
1150 | { "-fno-freestanding", "" }, | |
1151 | { "-fcond-mismatch", "Allow different types as args of ? operator"}, | |
1152 | { "-fno-cond-mismatch", "" }, | |
62e7b719 | 1153 | { "-fdollars-in-identifiers", "Allow the use of $ inside identifiers" }, |
b8468bc7 | 1154 | { "-fno-dollars-in-identifiers", "" }, |
3773a46b JM |
1155 | { "-fpreprocessed", "" }, |
1156 | { "-fno-preprocessed", "" }, | |
b8468bc7 NC |
1157 | { "-fshort-double", "Use the same size for double as for float" }, |
1158 | { "-fno-short-double", "" }, | |
1159 | { "-fshort-enums", "Use the smallest fitting integer to hold enums"}, | |
1160 | { "-fno-short-enums", "" }, | |
12a39b12 JM |
1161 | { "-fshort-wchar", "Override the underlying type for wchar_t to `unsigned short'" }, |
1162 | { "-fno-short-wchar", "" }, | |
b8468bc7 NC |
1163 | |
1164 | { "-Wall", "Enable most warning messages" }, | |
1165 | { "-Wbad-function-cast", | |
1166 | "Warn about casting functions to incompatible types" }, | |
1167 | { "-Wno-bad-function-cast", "" }, | |
0ca3fb0a KG |
1168 | { "-Wmissing-noreturn", |
1169 | "Warn about functions which might be candidates for attribute noreturn" }, | |
1170 | { "-Wno-missing-noreturn", "" }, | |
b8468bc7 NC |
1171 | { "-Wcast-qual", "Warn about casts which discard qualifiers"}, |
1172 | { "-Wno-cast-qual", "" }, | |
630962bf | 1173 | { "-Wchar-subscripts", "Warn about subscripts whose type is 'char'"}, |
b8468bc7 NC |
1174 | { "-Wno-char-subscripts", "" }, |
1175 | { "-Wcomment", "Warn if nested comments are detected" }, | |
c84e2712 KG |
1176 | { "-Wno-comment", "" }, |
1177 | { "-Wcomments", "Warn if nested comments are detected" }, | |
1178 | { "-Wno-comments", "" }, | |
b8468bc7 NC |
1179 | { "-Wconversion", "Warn about possibly confusing type conversions" }, |
1180 | { "-Wno-conversion", "" }, | |
1181 | { "-Wformat", "Warn about printf format anomalies" }, | |
1182 | { "-Wno-format", "" }, | |
1183 | { "-Wimplicit-function-declaration", | |
1184 | "Warn about implicit function declarations" }, | |
1185 | { "-Wno-implicit-function-declaration", "" }, | |
1186 | { "-Werror-implicit-function-declaration", "" }, | |
1187 | { "-Wimplicit-int", "Warn when a declaration does not specify a type" }, | |
1188 | { "-Wno-implicit-int", "" }, | |
1189 | { "-Wimplicit", "" }, | |
1190 | { "-Wno-implicit", "" }, | |
1191 | { "-Wimport", "Warn about the use of the #import directive" }, | |
1192 | { "-Wno-import", "" }, | |
1193 | { "-Wlong-long","" }, | |
1194 | { "-Wno-long-long", "Do not warn about using 'long long' when -pedantic" }, | |
1195 | { "-Wmain", "Warn about suspicious declarations of main" }, | |
1196 | { "-Wno-main", "" }, | |
1197 | { "-Wmissing-braces", | |
1198 | "Warn about possibly missing braces around initialisers" }, | |
1199 | { "-Wno-missing-braces", "" }, | |
1200 | { "-Wmissing-declarations", | |
1201 | "Warn about global funcs without previous declarations"}, | |
1202 | { "-Wno-missing-declarations", "" }, | |
1203 | { "-Wmissing-prototypes", "Warn about global funcs without prototypes" }, | |
1204 | { "-Wno-missing-prototypes", "" }, | |
1205 | { "-Wmultichar", "Warn about use of multicharacter literals"}, | |
1206 | { "-Wno-multichar", "" }, | |
1207 | { "-Wnested-externs", "Warn about externs not at file scope level" }, | |
1208 | { "-Wno-nested-externs", "" }, | |
1209 | { "-Wparentheses", "Warn about possible missing parentheses" }, | |
1210 | { "-Wno-parentheses", "" }, | |
1211 | { "-Wpointer-arith", "Warn about function pointer arithmetic" }, | |
1212 | { "-Wno-pointer-arith", "" }, | |
1213 | { "-Wredundant-decls", | |
1214 | "Warn about multiple declarations of the same object" }, | |
1215 | { "-Wno-redundant-decls", "" }, | |
1216 | { "-Wsign-compare", "Warn about signed/unsigned comparisons" }, | |
1217 | { "-Wno-sign-compare", "" }, | |
b843d210 DZ |
1218 | { "-Wfloat-equal", "Warn about testing equality of floating point numbers" }, |
1219 | { "-Wno-float-equal", "" }, | |
4dbba876 | 1220 | { "-Wunknown-pragmas", "Warn about unrecognized pragmas" }, |
b8468bc7 NC |
1221 | { "-Wno-unknown-pragmas", "" }, |
1222 | { "-Wstrict-prototypes", "Warn about non-prototyped function decls" }, | |
1223 | { "-Wno-strict-prototypes", "" }, | |
630962bf | 1224 | { "-Wtraditional", "Warn about constructs whose meaning change in ANSI C"}, |
b8468bc7 NC |
1225 | { "-Wno-traditional", "" }, |
1226 | { "-Wtrigraphs", "Warn when trigraphs are encountered" }, | |
1227 | { "-Wno-trigraphs", "" }, | |
1228 | { "-Wundef", "" }, | |
1229 | { "-Wno-undef", "" }, | |
1230 | { "-Wwrite-strings", "Mark strings as 'const char *'"}, | |
1231 | { "-Wno-write-strings", "" }, | |
b8468bc7 NC |
1232 | |
1233 | #define DEFINE_LANG_NAME(NAME) { NULL, NAME }, | |
1234 | ||
39dd8003 | 1235 | /* These are for Objective C. */ |
b8468bc7 NC |
1236 | DEFINE_LANG_NAME ("Objective C") |
1237 | ||
1238 | { "-lang-objc", "" }, | |
1239 | { "-gen-decls", "Dump decls to a .decl file" }, | |
62e7b719 | 1240 | { "-fgnu-runtime", "Generate code for GNU runtime environment" }, |
b8468bc7 NC |
1241 | { "-fno-gnu-runtime", "" }, |
1242 | { "-fnext-runtime", "Generate code for NeXT runtime environment" }, | |
1243 | { "-fno-next-runtime", "" }, | |
1244 | { "-Wselector", "Warn if a selector has multiple methods" }, | |
1245 | { "-Wno-selector", "" }, | |
1246 | { "-Wprotocol", "" }, | |
1247 | { "-Wno-protocol", "Do not warn if inherited methods are unimplemented"}, | |
1248 | { "-print-objc-runtime-info", | |
1249 | "Generate C header of platform specific features" }, | |
a0d85b75 | 1250 | |
2a95de17 | 1251 | #include "options.h" |
b8468bc7 | 1252 | |
b99933c7 | 1253 | }; |
b8468bc7 NC |
1254 | |
1255 | /* Here is a table, controlled by the tm.h file, listing each -m switch | |
1256 | and which bits in `target_switches' it should set or clear. | |
1257 | If VALUE is positive, it is bits to set. | |
1258 | If VALUE is negative, -VALUE is bits to clear. | |
1259 | (The sign bit is not used so there is no confusion.) */ | |
1260 | ||
1261 | struct | |
1262 | { | |
87e11268 | 1263 | const char * name; |
b8468bc7 | 1264 | int value; |
87e11268 | 1265 | const char * description; |
b8468bc7 NC |
1266 | } |
1267 | target_switches [] = TARGET_SWITCHES; | |
1268 | ||
1269 | /* This table is similar, but allows the switch to have a value. */ | |
1270 | ||
1271 | #ifdef TARGET_OPTIONS | |
1272 | struct | |
1273 | { | |
87e11268 KG |
1274 | const char * prefix; |
1275 | const char ** variable; | |
1276 | const char * description; | |
b8468bc7 NC |
1277 | } |
1278 | target_options [] = TARGET_OPTIONS; | |
1279 | #endif | |
4291d9c8 RS |
1280 | \f |
1281 | /* Options controlling warnings */ | |
1282 | ||
1283 | /* Don't print warning messages. -w. */ | |
1284 | ||
1285 | int inhibit_warnings = 0; | |
1286 | ||
1287 | /* Print various extra warnings. -W. */ | |
1288 | ||
1289 | int extra_warnings = 0; | |
1290 | ||
1291 | /* Treat warnings as errors. -Werror. */ | |
1292 | ||
1293 | int warnings_are_errors = 0; | |
1294 | ||
078721e1 | 1295 | /* Nonzero to warn about unused variables, functions et.al. */ |
4291d9c8 | 1296 | |
078721e1 AC |
1297 | int warn_unused_function; |
1298 | int warn_unused_label; | |
1299 | int warn_unused_parameter; | |
1300 | int warn_unused_variable; | |
1301 | int warn_unused_value; | |
1302 | ||
1303 | void | |
1304 | set_Wunused (setting) | |
1305 | int setting; | |
1306 | { | |
1307 | warn_unused_function = setting; | |
1308 | warn_unused_label = setting; | |
1309 | /* Unused function parameter warnings are reported when either ``-W | |
1310 | -Wunused'' or ``-Wunused-parameter'' is specified. Differentiate | |
1311 | -Wunused by setting WARN_UNUSED_PARAMETER to -1 */ | |
1312 | if (!setting) | |
1313 | warn_unused_parameter = 0; | |
1314 | else if (!warn_unused_parameter) | |
1315 | warn_unused_parameter = -1; | |
1316 | warn_unused_variable = setting; | |
1317 | warn_unused_value = setting; | |
1318 | } | |
4291d9c8 | 1319 | |
312f6255 GK |
1320 | /* Nonzero to warn about code which is never reached. */ |
1321 | ||
1322 | int warn_notreached; | |
1323 | ||
4291d9c8 RS |
1324 | /* Nonzero to warn about variables used before they are initialized. */ |
1325 | ||
1326 | int warn_uninitialized; | |
1327 | ||
1328 | /* Nonzero means warn about all declarations which shadow others. */ | |
1329 | ||
1330 | int warn_shadow; | |
1331 | ||
1332 | /* Warn if a switch on an enum fails to have a case for every enum value. */ | |
1333 | ||
1334 | int warn_switch; | |
1335 | ||
1336 | /* Nonzero means warn about function definitions that default the return type | |
1337 | or that use a null return and have a return-type other than void. */ | |
1338 | ||
1339 | int warn_return_type; | |
1340 | ||
1341 | /* Nonzero means warn about pointer casts that increase the required | |
1342 | alignment of the target type (and might therefore lead to a crash | |
1343 | due to a misaligned access). */ | |
1344 | ||
1345 | int warn_cast_align; | |
1346 | ||
1347 | /* Nonzero means warn about any identifiers that match in the first N | |
1348 | characters. The value N is in `id_clash_len'. */ | |
1349 | ||
1350 | int warn_id_clash; | |
4559fd9e | 1351 | int id_clash_len; |
b51e9c62 RK |
1352 | |
1353 | /* Nonzero means warn about any objects definitions whose size is larger | |
1354 | than N bytes. Also want about function definitions whose returned | |
1355 | values are larger than N bytes. The value N is in `larger_than_size'. */ | |
1356 | ||
1357 | int warn_larger_than; | |
4559fd9e | 1358 | HOST_WIDE_INT larger_than_size; |
4291d9c8 RS |
1359 | |
1360 | /* Nonzero means warn if inline function is too large. */ | |
1361 | ||
1362 | int warn_inline; | |
1363 | ||
1364 | /* Warn if a function returns an aggregate, | |
1365 | since there are often incompatible calling conventions for doing this. */ | |
1366 | ||
1367 | int warn_aggregate_return; | |
1368 | ||
3c12fcc2 GM |
1369 | /* Warn if packed attribute on struct is unnecessary and inefficient. */ |
1370 | ||
1371 | int warn_packed; | |
1372 | ||
1373 | /* Warn when gcc pads a structure to an alignment boundary. */ | |
1374 | ||
1375 | int warn_padded; | |
1376 | ||
4291d9c8 RS |
1377 | /* Likewise for -W. */ |
1378 | ||
b8468bc7 | 1379 | lang_independent_options W_options[] = |
4291d9c8 | 1380 | { |
078721e1 AC |
1381 | {"unused-function", &warn_unused_function, 1, "Warn when a function is unused" }, |
1382 | {"unused-label", &warn_unused_label, 1, "Warn when a label is unused" }, | |
1383 | {"unused-parameter", &warn_unused_parameter, 1, "Warn when a function parameter is unused" }, | |
1384 | {"unused-variable", &warn_unused_variable, 1, "Warn when a variable is unused" }, | |
1385 | {"unused-value", &warn_unused_value, 1, "Warn when an expression value is unused" }, | |
b8468bc7 NC |
1386 | {"error", &warnings_are_errors, 1, ""}, |
1387 | {"shadow", &warn_shadow, 1, "Warn when one local variable shadows another" }, | |
1388 | {"switch", &warn_switch, 1, | |
1389 | "Warn about enumerated switches missing a specific case" }, | |
1390 | {"aggregate-return", &warn_aggregate_return, 1, | |
1391 | "Warn about returning structures, unions or arrays" }, | |
1392 | {"cast-align", &warn_cast_align, 1, | |
1393 | "Warn about pointer casts which increase alignment" }, | |
312f6255 GK |
1394 | {"unreachable-code", &warn_notreached, 1, |
1395 | "Warn about code that will never be executed" }, | |
b8468bc7 NC |
1396 | {"uninitialized", &warn_uninitialized, 1, |
1397 | "Warn about unitialized automatic variables"}, | |
1398 | {"inline", &warn_inline, 1, | |
3c12fcc2 GM |
1399 | "Warn when an inlined function cannot be inlined"}, |
1400 | {"packed", &warn_packed, 1, | |
1401 | "Warn when the packed attribute has no effect on struct layout"}, | |
1402 | {"padded", &warn_padded, 1, | |
1403 | "Warn when padding is required to align struct members"} | |
4291d9c8 RS |
1404 | }; |
1405 | \f | |
1406 | /* Output files for assembler code (real compiler output) | |
1407 | and debugging dumps. */ | |
1408 | ||
1409 | FILE *asm_out_file; | |
1410 | FILE *aux_info_file; | |
032713aa | 1411 | FILE *rtl_dump_file = NULL; |
4291d9c8 | 1412 | |
132e01b1 TP |
1413 | /* Decode the string P as an integral parameter. |
1414 | If the string is indeed an integer return its numeric value else | |
192babfd TP |
1415 | issue an Invalid Option error for the option PNAME and return DEFVAL. |
1416 | If PNAME is zero just return DEFVAL, do not call error. */ | |
132e01b1 TP |
1417 | |
1418 | int | |
1419 | read_integral_parameter (p, pname, defval) | |
192babfd TP |
1420 | const char *p; |
1421 | const char *pname; | |
1422 | const int defval; | |
132e01b1 | 1423 | { |
192babfd | 1424 | const char *endp = p; |
132e01b1 TP |
1425 | |
1426 | while (*endp) | |
1427 | { | |
1428 | if (*endp >= '0' && *endp <= '9') | |
1429 | endp++; | |
1430 | else | |
192babfd TP |
1431 | break; |
1432 | } | |
1433 | ||
1434 | if (*endp != 0) | |
1435 | { | |
1436 | if (pname != 0) | |
1437 | error ("Invalid option `%s'", pname); | |
1438 | return defval; | |
132e01b1 TP |
1439 | } |
1440 | ||
1441 | return atoi (p); | |
1442 | } | |
1443 | ||
4291d9c8 | 1444 | \f |
4291d9c8 RS |
1445 | /* This is the default decl_printable_name function. */ |
1446 | ||
5f8ded66 | 1447 | static const char * |
a1d7ffe3 | 1448 | decl_name (decl, verbosity) |
4291d9c8 | 1449 | tree decl; |
114791ea | 1450 | int verbosity ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1451 | { |
1452 | return IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1453 | } | |
1454 | \f | |
afe3d090 | 1455 | /* Mark P for GC. Also mark main_input_filename and input_filename. */ |
77a02dba | 1456 | |
afe3d090 BS |
1457 | static void |
1458 | mark_file_stack (p) | |
1459 | void *p; | |
1460 | { | |
1461 | struct file_stack *stack = *(struct file_stack **)p; | |
1462 | ||
1463 | /* We're only called for input_file_stack, so we can mark the current | |
1464 | input_filename here as well. */ | |
1465 | ggc_mark_string (main_input_filename); | |
1466 | ggc_mark_string (input_filename); | |
1467 | ||
1468 | while (stack) | |
1469 | { | |
1470 | ggc_mark_string (stack->name); | |
1471 | stack = stack->next; | |
1472 | } | |
1473 | } | |
4291d9c8 | 1474 | \f |
4291d9c8 RS |
1475 | |
1476 | /* This calls abort and is used to avoid problems when abort if a macro. | |
1477 | It is used when we need to pass the address of abort. */ | |
1478 | ||
1479 | void | |
1480 | do_abort () | |
1481 | { | |
1482 | abort (); | |
1483 | } | |
1484 | ||
1485 | /* When `malloc.c' is compiled with `rcheck' defined, | |
1486 | it calls this function to report clobberage. */ | |
1487 | ||
1488 | void | |
1489 | botch (s) | |
87e11268 | 1490 | const char * s ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1491 | { |
1492 | abort (); | |
1493 | } | |
4291d9c8 RS |
1494 | \f |
1495 | /* Return the logarithm of X, base 2, considering X unsigned, | |
37366632 RK |
1496 | if X is a power of 2. Otherwise, returns -1. |
1497 | ||
1498 | This should be used via the `exact_log2' macro. */ | |
4291d9c8 RS |
1499 | |
1500 | int | |
37366632 RK |
1501 | exact_log2_wide (x) |
1502 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1503 | { |
1504 | register int log = 0; | |
1505 | /* Test for 0 or a power of 2. */ | |
1506 | if (x == 0 || x != (x & -x)) | |
1507 | return -1; | |
1508 | while ((x >>= 1) != 0) | |
1509 | log++; | |
1510 | return log; | |
1511 | } | |
1512 | ||
1513 | /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X. | |
37366632 RK |
1514 | If X is 0, return -1. |
1515 | ||
1516 | This should be used via the floor_log2 macro. */ | |
4291d9c8 RS |
1517 | |
1518 | int | |
37366632 RK |
1519 | floor_log2_wide (x) |
1520 | register unsigned HOST_WIDE_INT x; | |
4291d9c8 RS |
1521 | { |
1522 | register int log = -1; | |
1523 | while (x != 0) | |
1524 | log++, | |
1525 | x >>= 1; | |
1526 | return log; | |
1527 | } | |
1528 | ||
3bbfa296 | 1529 | static int float_handler_set; |
4291d9c8 RS |
1530 | int float_handled; |
1531 | jmp_buf float_handler; | |
1532 | ||
3bbfa296 RK |
1533 | /* Signals actually come here. */ |
1534 | ||
1535 | static void | |
1536 | float_signal (signo) | |
1537 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 1538 | int signo ATTRIBUTE_UNUSED; |
3bbfa296 RK |
1539 | { |
1540 | if (float_handled == 0) | |
1541 | abort (); | |
1542 | #if defined (USG) || defined (hpux) | |
1543 | signal (SIGFPE, float_signal); /* re-enable the signal catcher */ | |
1544 | #endif | |
1545 | float_handled = 0; | |
1546 | signal (SIGFPE, float_signal); | |
1547 | longjmp (float_handler, 1); | |
1548 | } | |
1549 | ||
4291d9c8 RS |
1550 | /* Specify where to longjmp to when a floating arithmetic error happens. |
1551 | If HANDLER is 0, it means don't handle the errors any more. */ | |
1552 | ||
1553 | void | |
1554 | set_float_handler (handler) | |
1555 | jmp_buf handler; | |
1556 | { | |
1557 | float_handled = (handler != 0); | |
1558 | if (handler) | |
4c9a05bc | 1559 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
3bbfa296 RK |
1560 | |
1561 | if (float_handled && ! float_handler_set) | |
1562 | { | |
1563 | signal (SIGFPE, float_signal); | |
1564 | float_handler_set = 1; | |
1565 | } | |
4291d9c8 RS |
1566 | } |
1567 | ||
1a87eea2 KG |
1568 | /* This is a wrapper function for code which might elicit an |
1569 | arithmetic exception. That code should be passed in as a function | |
1570 | pointer FN, and one argument DATA. DATA is usually a struct which | |
1571 | contains the real input and output for function FN. This function | |
1572 | returns 0 (failure) if longjmp was called (i.e. an exception | |
1573 | occured.) It returns 1 (success) otherwise. */ | |
1574 | ||
1575 | int | |
1576 | do_float_handler (fn, data) | |
58782098 | 1577 | void (*fn) PARAMS ((PTR)); |
1a87eea2 KG |
1578 | PTR data; |
1579 | { | |
1580 | jmp_buf buf; | |
1581 | ||
1582 | if (setjmp (buf)) | |
1583 | { | |
1584 | /* We got here via longjmp() caused by an exception in function fn() */ | |
1585 | set_float_handler (NULL); | |
1586 | return 0; | |
1587 | } | |
1588 | ||
1589 | set_float_handler (buf); | |
1590 | (*fn)(data); | |
1591 | set_float_handler (NULL); | |
1592 | return 1; | |
1593 | } | |
1594 | ||
bff4b641 RS |
1595 | /* Specify, in HANDLER, where to longjmp to when a floating arithmetic |
1596 | error happens, pushing the previous specification into OLD_HANDLER. | |
1597 | Return an indication of whether there was a previous handler in effect. */ | |
1598 | ||
1599 | int | |
1600 | push_float_handler (handler, old_handler) | |
dc2b15dc | 1601 | jmp_buf handler, old_handler; |
bff4b641 RS |
1602 | { |
1603 | int was_handled = float_handled; | |
1604 | ||
1605 | float_handled = 1; | |
1606 | if (was_handled) | |
7e2231e7 | 1607 | memcpy ((char *) old_handler, (char *) float_handler, |
4c9a05bc RK |
1608 | sizeof (float_handler)); |
1609 | ||
7e2231e7 | 1610 | memcpy ((char *) float_handler, (char *) handler, sizeof (float_handler)); |
bff4b641 RS |
1611 | return was_handled; |
1612 | } | |
1613 | ||
1614 | /* Restore the previous specification of whether and where to longjmp to | |
1615 | when a floating arithmetic error happens. */ | |
1616 | ||
1617 | void | |
1618 | pop_float_handler (handled, handler) | |
1619 | int handled; | |
1620 | jmp_buf handler; | |
1621 | { | |
1622 | float_handled = handled; | |
1623 | if (handled) | |
4c9a05bc | 1624 | bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler)); |
bff4b641 RS |
1625 | } |
1626 | ||
4291d9c8 RS |
1627 | /* Handler for SIGPIPE. */ |
1628 | ||
1629 | static void | |
1630 | pipe_closed (signo) | |
1631 | /* If this is missing, some compilers complain. */ | |
d6f4ec51 | 1632 | int signo ATTRIBUTE_UNUSED; |
4291d9c8 RS |
1633 | { |
1634 | fatal ("output pipe has been closed"); | |
1635 | } | |
1636 | ||
1637 | /* Strip off a legitimate source ending from the input string NAME of | |
c62bdc79 | 1638 | length LEN. Rather than having to know the names used by all of |
2290e0ec PB |
1639 | our front ends, we strip off an ending of a period followed by |
1640 | up to five characters. (Java uses ".class".) */ | |
4291d9c8 RS |
1641 | |
1642 | void | |
1643 | strip_off_ending (name, len) | |
1644 | char *name; | |
1645 | int len; | |
1646 | { | |
2290e0ec PB |
1647 | int i; |
1648 | for (i = 2; i < 6 && len > i; i++) | |
1649 | { | |
1650 | if (name[len - i] == '.') | |
1651 | { | |
1652 | name[len - i] = '\0'; | |
1653 | break; | |
1654 | } | |
1655 | } | |
4291d9c8 RS |
1656 | } |
1657 | ||
7dce5088 | 1658 | /* Output a quoted string. */ |
0f41302f | 1659 | |
7dce5088 PE |
1660 | void |
1661 | output_quoted_string (asm_file, string) | |
1662 | FILE *asm_file; | |
87e11268 | 1663 | const char *string; |
7dce5088 | 1664 | { |
e9a25f70 JL |
1665 | #ifdef OUTPUT_QUOTED_STRING |
1666 | OUTPUT_QUOTED_STRING (asm_file, string); | |
1667 | #else | |
7dce5088 PE |
1668 | char c; |
1669 | ||
1670 | putc ('\"', asm_file); | |
1671 | while ((c = *string++) != 0) | |
1672 | { | |
1673 | if (c == '\"' || c == '\\') | |
1674 | putc ('\\', asm_file); | |
1675 | putc (c, asm_file); | |
1676 | } | |
1677 | putc ('\"', asm_file); | |
e9a25f70 | 1678 | #endif |
7dce5088 PE |
1679 | } |
1680 | ||
4291d9c8 RS |
1681 | /* Output a file name in the form wanted by System V. */ |
1682 | ||
1683 | void | |
1684 | output_file_directive (asm_file, input_name) | |
1685 | FILE *asm_file; | |
87e11268 | 1686 | const char *input_name; |
4291d9c8 RS |
1687 | { |
1688 | int len = strlen (input_name); | |
87e11268 | 1689 | const char *na = input_name + len; |
4291d9c8 RS |
1690 | |
1691 | /* NA gets INPUT_NAME sans directory names. */ | |
1692 | while (na > input_name) | |
1693 | { | |
1a8bb3dd JL |
1694 | if (IS_DIR_SEPARATOR (na[-1])) |
1695 | break; | |
4291d9c8 RS |
1696 | na--; |
1697 | } | |
1698 | ||
1699 | #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME | |
1700 | ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na); | |
1701 | #else | |
1702 | #ifdef ASM_OUTPUT_SOURCE_FILENAME | |
1703 | ASM_OUTPUT_SOURCE_FILENAME (asm_file, na); | |
1704 | #else | |
7dce5088 PE |
1705 | fprintf (asm_file, "\t.file\t"); |
1706 | output_quoted_string (asm_file, na); | |
1707 | fputc ('\n', asm_file); | |
4291d9c8 RS |
1708 | #endif |
1709 | #endif | |
1710 | } | |
1711 | \f | |
444bf316 | 1712 | #ifdef ASM_IDENTIFY_LANGUAGE |
0f41302f | 1713 | /* Routine to build language identifier for object file. */ |
d0d4af87 MS |
1714 | static void |
1715 | output_lang_identify (asm_out_file) | |
1716 | FILE *asm_out_file; | |
1717 | { | |
1718 | int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1; | |
1719 | char *s = (char *) alloca (len); | |
1720 | sprintf (s, "__gnu_compiled_%s", lang_identify ()); | |
1721 | ASM_OUTPUT_LABEL (asm_out_file, s); | |
1722 | } | |
444bf316 | 1723 | #endif |
d0d4af87 | 1724 | |
61098249 RH |
1725 | /* Routine to open a dump file. Return true if the dump file is enabled. */ |
1726 | ||
1727 | static int | |
1728 | open_dump_file (index, decl) | |
1729 | enum dump_file_index index; | |
1730 | tree decl; | |
032713aa | 1731 | { |
61098249 RH |
1732 | char *dump_name; |
1733 | const char *open_arg; | |
1734 | char seq[16]; | |
1735 | ||
1736 | if (! dump_file[index].enabled) | |
1737 | return 0; | |
0f41302f | 1738 | |
2a9a326b AS |
1739 | timevar_push (TV_DUMP); |
1740 | if (rtl_dump_file != NULL) | |
1741 | fclose (rtl_dump_file); | |
032713aa | 1742 | |
2a9a326b | 1743 | sprintf (seq, ".%02d.", index); |
61098249 | 1744 | |
2a9a326b AS |
1745 | if (! dump_file[index].initialized) |
1746 | { | |
1747 | /* If we've not initialized the files, do so now. */ | |
1748 | if (graph_dump_format != no_graph | |
1749 | && dump_file[index].graph_dump_p) | |
1750 | { | |
1751 | dump_name = concat (seq, dump_file[index].extension, NULL); | |
1752 | clean_graph_dump_file (dump_base_name, dump_name); | |
1753 | free (dump_name); | |
1754 | } | |
1755 | dump_file[index].initialized = 1; | |
1756 | open_arg = "w"; | |
1757 | } | |
1758 | else | |
1759 | open_arg = "a"; | |
61098249 | 1760 | |
2a9a326b AS |
1761 | dump_name = concat (dump_base_name, seq, |
1762 | dump_file[index].extension, NULL); | |
61098249 | 1763 | |
2a9a326b AS |
1764 | rtl_dump_file = fopen (dump_name, open_arg); |
1765 | if (rtl_dump_file == NULL) | |
1766 | pfatal_with_name (dump_name); | |
032713aa | 1767 | |
2a9a326b | 1768 | free (dump_name); |
032713aa | 1769 | |
2a9a326b AS |
1770 | if (decl) |
1771 | fprintf (rtl_dump_file, "\n;; Function %s\n\n", | |
1772 | decl_printable_name (decl, 2)); | |
1773 | ||
1774 | timevar_pop (TV_DUMP); | |
61098249 | 1775 | return 1; |
032713aa NC |
1776 | } |
1777 | ||
1778 | /* Routine to close a dump file. */ | |
61098249 | 1779 | |
032713aa | 1780 | static void |
61098249 RH |
1781 | close_dump_file (index, func, insns) |
1782 | enum dump_file_index index; | |
58782098 | 1783 | void (*func) PARAMS ((FILE *, rtx)); |
032713aa NC |
1784 | rtx insns; |
1785 | { | |
61098249 RH |
1786 | if (! rtl_dump_file) |
1787 | return; | |
1788 | ||
2a9a326b AS |
1789 | timevar_push (TV_DUMP); |
1790 | if (insns | |
1791 | && graph_dump_format != no_graph | |
1792 | && dump_file[index].graph_dump_p) | |
1793 | { | |
1794 | char seq[16]; | |
1795 | char *suffix; | |
61098249 | 1796 | |
2a9a326b AS |
1797 | sprintf (seq, ".%02d.", index); |
1798 | suffix = concat (seq, dump_file[index].extension, NULL); | |
1799 | print_rtl_graph_with_bb (dump_base_name, suffix, insns); | |
1800 | free (suffix); | |
1801 | } | |
61098249 | 1802 | |
2a9a326b AS |
1803 | if (func && insns) |
1804 | func (rtl_dump_file, insns); | |
032713aa | 1805 | |
2a9a326b AS |
1806 | fflush (rtl_dump_file); |
1807 | fclose (rtl_dump_file); | |
032713aa | 1808 | |
2a9a326b AS |
1809 | rtl_dump_file = NULL; |
1810 | timevar_pop (TV_DUMP); | |
dfe1a916 DE |
1811 | } |
1812 | ||
32291f94 MM |
1813 | /* Do any final processing required for the declarations in VEC, of |
1814 | which there are LEN. We write out inline functions and variables | |
1815 | that have been deferred until this point, but which are required. | |
1816 | Returns non-zero if anything was put out. */ | |
1817 | int | |
1818 | wrapup_global_declarations (vec, len) | |
1819 | tree *vec; | |
1820 | int len; | |
1821 | { | |
1822 | tree decl; | |
1823 | int i; | |
1824 | int reconsider; | |
1825 | int output_something = 0; | |
1826 | ||
1827 | for (i = 0; i < len; i++) | |
1828 | { | |
1829 | decl = vec[i]; | |
1830 | ||
1831 | /* We're not deferring this any longer. */ | |
1832 | DECL_DEFER_OUTPUT (decl) = 0; | |
1833 | ||
1834 | if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0 | |
1835 | && incomplete_decl_finalize_hook != 0) | |
1836 | (*incomplete_decl_finalize_hook) (decl); | |
1837 | } | |
1838 | ||
1839 | /* Now emit any global variables or functions that we have been | |
1840 | putting off. We need to loop in case one of the things emitted | |
1841 | here references another one which comes earlier in the list. */ | |
1842 | do | |
1843 | { | |
1844 | reconsider = 0; | |
1845 | for (i = 0; i < len; i++) | |
1846 | { | |
1847 | decl = vec[i]; | |
1848 | ||
1849 | if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl)) | |
1850 | continue; | |
1851 | ||
1852 | /* Don't write out static consts, unless we still need them. | |
1853 | ||
1854 | We also keep static consts if not optimizing (for debugging), | |
1855 | unless the user specified -fno-keep-static-consts. | |
1856 | ??? They might be better written into the debug information. | |
1857 | This is possible when using DWARF. | |
1858 | ||
1859 | A language processor that wants static constants to be always | |
1860 | written out (even if it is not used) is responsible for | |
1861 | calling rest_of_decl_compilation itself. E.g. the C front-end | |
1862 | calls rest_of_decl_compilation from finish_decl. | |
1863 | One motivation for this is that is conventional in some | |
1864 | environments to write things like: | |
1865 | static const char rcsid[] = "... version string ..."; | |
1866 | intending to force the string to be in the executable. | |
1867 | ||
1868 | A language processor that would prefer to have unneeded | |
1869 | static constants "optimized away" would just defer writing | |
1870 | them out until here. E.g. C++ does this, because static | |
1871 | constants are often defined in header files. | |
1872 | ||
1873 | ??? A tempting alternative (for both C and C++) would be | |
1874 | to force a constant to be written if and only if it is | |
1875 | defined in a main file, as opposed to an include file. */ | |
1876 | ||
1877 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
1878 | && (! TREE_READONLY (decl) | |
1879 | || TREE_PUBLIC (decl) | |
1880 | || (!optimize && flag_keep_static_consts) | |
1881 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) | |
1882 | { | |
1883 | reconsider = 1; | |
1884 | rest_of_decl_compilation (decl, NULL_PTR, 1, 1); | |
1885 | } | |
1886 | ||
1887 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1888 | && DECL_INITIAL (decl) != 0 | |
1889 | && DECL_SAVED_INSNS (decl) != 0 | |
1890 | && (flag_keep_inline_functions | |
59182242 | 1891 | || (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) |
32291f94 MM |
1892 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))) |
1893 | { | |
1894 | reconsider = 1; | |
1895 | temporary_allocation (); | |
1896 | output_inline_function (decl); | |
1897 | permanent_allocation (1); | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | if (reconsider) | |
1902 | output_something = 1; | |
1903 | } | |
1904 | while (reconsider); | |
1905 | ||
1906 | return output_something; | |
1907 | } | |
1908 | ||
1909 | /* Issue appropriate warnings for the global declarations in VEC (of | |
1910 | which there are LEN). Output debugging information for them. */ | |
1911 | void | |
1912 | check_global_declarations (vec, len) | |
1913 | tree *vec; | |
1914 | int len; | |
1915 | { | |
1916 | tree decl; | |
1917 | int i; | |
1918 | ||
1919 | for (i = 0; i < len; i++) | |
1920 | { | |
1921 | decl = vec[i]; | |
1922 | ||
1923 | if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl) | |
1924 | && ! TREE_ASM_WRITTEN (decl)) | |
1925 | /* Cancel the RTL for this decl so that, if debugging info | |
1926 | output for global variables is still to come, | |
1927 | this one will be omitted. */ | |
1928 | DECL_RTL (decl) = NULL; | |
1929 | ||
1930 | /* Warn about any function | |
1931 | declared static but not defined. | |
1932 | We don't warn about variables, | |
1933 | because many programs have static variables | |
1934 | that exist only to get some text into the object file. */ | |
1935 | if (TREE_CODE (decl) == FUNCTION_DECL | |
078721e1 | 1936 | && (warn_unused_function |
32291f94 MM |
1937 | || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) |
1938 | && DECL_INITIAL (decl) == 0 | |
1939 | && DECL_EXTERNAL (decl) | |
1940 | && ! DECL_ARTIFICIAL (decl) | |
1941 | && ! TREE_PUBLIC (decl)) | |
1942 | { | |
1943 | if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))) | |
1944 | pedwarn_with_decl (decl, | |
1945 | "`%s' used but never defined"); | |
1946 | else | |
1947 | warning_with_decl (decl, | |
1948 | "`%s' declared `static' but never defined"); | |
1949 | /* This symbol is effectively an "extern" declaration now. */ | |
1950 | TREE_PUBLIC (decl) = 1; | |
1951 | assemble_external (decl); | |
1952 | } | |
1953 | ||
1954 | /* Warn about static fns or vars defined but not used, | |
1955 | but not about inline functions or static consts | |
1956 | since defining those in header files is normal practice. */ | |
078721e1 AC |
1957 | if (((warn_unused_function |
1958 | && TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl)) | |
1959 | || (warn_unused_variable | |
1960 | && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) | |
32291f94 MM |
1961 | && ! DECL_IN_SYSTEM_HEADER (decl) |
1962 | && ! DECL_EXTERNAL (decl) | |
1963 | && ! TREE_PUBLIC (decl) | |
1964 | && ! TREE_USED (decl) | |
1965 | && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl)) | |
1966 | /* The TREE_USED bit for file-scope decls | |
1967 | is kept in the identifier, to handle multiple | |
1968 | external decls in different scopes. */ | |
1969 | && ! TREE_USED (DECL_NAME (decl))) | |
1970 | warning_with_decl (decl, "`%s' defined but not used"); | |
1971 | ||
2a9a326b | 1972 | timevar_push (TV_SYMOUT); |
32291f94 MM |
1973 | #ifdef SDB_DEBUGGING_INFO |
1974 | /* The COFF linker can move initialized global vars to the end. | |
1975 | And that can screw up the symbol ordering. | |
1976 | By putting the symbols in that order to begin with, | |
1977 | we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */ | |
1978 | if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL | |
1979 | && TREE_PUBLIC (decl) && DECL_INITIAL (decl) | |
1980 | && ! DECL_EXTERNAL (decl) | |
1981 | && DECL_RTL (decl) != 0) | |
2a9a326b | 1982 | sdbout_symbol (decl, 0); |
32291f94 MM |
1983 | |
1984 | /* Output COFF information for non-global | |
1985 | file-scope initialized variables. */ | |
1986 | if (write_symbols == SDB_DEBUG | |
1987 | && TREE_CODE (decl) == VAR_DECL | |
1988 | && DECL_INITIAL (decl) | |
1989 | && ! DECL_EXTERNAL (decl) | |
1990 | && DECL_RTL (decl) != 0 | |
1991 | && GET_CODE (DECL_RTL (decl)) == MEM) | |
2a9a326b | 1992 | sdbout_toplevel_data (decl); |
32291f94 MM |
1993 | #endif /* SDB_DEBUGGING_INFO */ |
1994 | #ifdef DWARF_DEBUGGING_INFO | |
1995 | /* Output DWARF information for file-scope tentative data object | |
1996 | declarations, file-scope (extern) function declarations (which | |
1997 | had no corresponding body) and file-scope tagged type declarations | |
1998 | and definitions which have not yet been forced out. */ | |
1999 | ||
2000 | if (write_symbols == DWARF_DEBUG | |
2001 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
2a9a326b | 2002 | dwarfout_file_scope_decl (decl, 1); |
32291f94 MM |
2003 | #endif |
2004 | #ifdef DWARF2_DEBUGGING_INFO | |
2005 | /* Output DWARF2 information for file-scope tentative data object | |
2006 | declarations, file-scope (extern) function declarations (which | |
2007 | had no corresponding body) and file-scope tagged type declarations | |
2008 | and definitions which have not yet been forced out. */ | |
2009 | ||
2010 | if (write_symbols == DWARF2_DEBUG | |
2011 | && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))) | |
2a9a326b | 2012 | dwarf2out_decl (decl); |
32291f94 | 2013 | #endif |
2a9a326b | 2014 | timevar_pop (TV_SYMOUT); |
32291f94 MM |
2015 | } |
2016 | } | |
032713aa | 2017 | |
68723fae MM |
2018 | /* Save the current INPUT_FILENAME and LINENO on the top entry in the |
2019 | INPUT_FILE_STACK. Push a new entry for FILE and LINE, and set the | |
2020 | INPUT_FILENAME and LINENO accordingly. */ | |
2021 | ||
2022 | void | |
2023 | push_srcloc (file, line) | |
3b304f5b | 2024 | const char *file; |
68723fae MM |
2025 | int line; |
2026 | { | |
2027 | struct file_stack *fs; | |
2028 | ||
2029 | if (input_file_stack) | |
2030 | { | |
2031 | input_file_stack->name = input_filename; | |
2032 | input_file_stack->line = lineno; | |
2033 | } | |
2034 | ||
2035 | fs = (struct file_stack *) xmalloc (sizeof (struct file_stack)); | |
2036 | fs->name = input_filename = file; | |
2037 | fs->line = lineno = line; | |
2038 | fs->indent_level = 0; | |
2039 | fs->next = input_file_stack; | |
2040 | input_file_stack = fs; | |
2041 | input_file_stack_tick++; | |
2042 | } | |
2043 | ||
2044 | /* Pop the top entry off the stack of presently open source files. | |
2045 | Restore the INPUT_FILENAME and LINENO from the new topmost entry on | |
2046 | the stack. */ | |
2047 | ||
2048 | void | |
2049 | pop_srcloc () | |
2050 | { | |
2051 | struct file_stack *fs; | |
2052 | ||
2053 | fs = input_file_stack; | |
2054 | input_file_stack = fs->next; | |
2055 | free (fs); | |
2056 | input_file_stack_tick++; | |
2057 | /* The initial souce file is never popped. */ | |
2058 | if (!input_file_stack) | |
2059 | abort (); | |
2060 | input_filename = input_file_stack->name; | |
2061 | lineno = input_file_stack->line; | |
2062 | } | |
2063 | ||
4291d9c8 RS |
2064 | /* Compile an entire file of output from cpp, named NAME. |
2065 | Write a file of assembly output and various debugging dumps. */ | |
2066 | ||
2067 | static void | |
2068 | compile_file (name) | |
3b304f5b | 2069 | const char *name; |
4291d9c8 RS |
2070 | { |
2071 | tree globals; | |
4291d9c8 RS |
2072 | |
2073 | int name_specified = name != 0; | |
2074 | ||
2075 | if (dump_base_name == 0) | |
2076 | dump_base_name = name ? name : "gccdump"; | |
4291d9c8 | 2077 | |
2a9a326b | 2078 | /* Start timing total execution time. */ |
4291d9c8 | 2079 | |
2a9a326b AS |
2080 | init_timevar (); |
2081 | timevar_start (TV_TOTAL); | |
2082 | ||
4291d9c8 RS |
2083 | /* Initialize data in various passes. */ |
2084 | ||
2085 | init_obstacks (); | |
2086 | init_tree_codes (); | |
5c60e5c0 | 2087 | name = init_parse (name); |
4291d9c8 | 2088 | init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL |
0d332add | 2089 | || debug_info_level == DINFO_LEVEL_VERBOSE |
312f6255 GK |
2090 | || flag_test_coverage |
2091 | || warn_notreached); | |
7f21d440 | 2092 | init_regs (); |
3bdf5ad1 | 2093 | init_alias_once (); |
4291d9c8 RS |
2094 | init_decl_processing (); |
2095 | init_optabs (); | |
2096 | init_stmt (); | |
fa51b01b | 2097 | init_eh (); |
4291d9c8 RS |
2098 | init_loop (); |
2099 | init_reload (); | |
87ff9c8e | 2100 | init_function_once (); |
d7db6646 | 2101 | init_stor_layout_once (); |
76095e2f | 2102 | init_varasm_once (); |
4291d9c8 | 2103 | |
49ad7cfa BS |
2104 | /* The following initialization functions need to generate rtl, so |
2105 | provide a dummy function context for them. */ | |
2106 | init_dummy_function_start (); | |
2107 | init_expmed (); | |
2108 | init_expr_once (); | |
4291d9c8 RS |
2109 | if (flag_caller_saves) |
2110 | init_caller_save (); | |
49ad7cfa | 2111 | expand_dummy_function_end (); |
4291d9c8 | 2112 | |
f246a305 RS |
2113 | /* If auxiliary info generation is desired, open the output file. |
2114 | This goes in the same directory as the source file--unlike | |
2115 | all the other output files. */ | |
4291d9c8 RS |
2116 | if (flag_gen_aux_info) |
2117 | { | |
4291d9c8 RS |
2118 | aux_info_file = fopen (aux_info_file_name, "w"); |
2119 | if (aux_info_file == 0) | |
2120 | pfatal_with_name (aux_info_file_name); | |
2121 | } | |
2122 | ||
4291d9c8 RS |
2123 | /* Open assembler code output file. */ |
2124 | ||
1fe65c00 PB |
2125 | if (flag_syntax_only) |
2126 | asm_out_file = NULL; | |
4291d9c8 RS |
2127 | else |
2128 | { | |
1fe65c00 | 2129 | if (! name_specified && asm_file_name == 0) |
4291d9c8 RS |
2130 | asm_out_file = stdout; |
2131 | else | |
1fe65c00 | 2132 | { |
1fe65c00 | 2133 | if (asm_file_name == 0) |
e7749837 RH |
2134 | { |
2135 | int len = strlen (dump_base_name); | |
2136 | char *dumpname = (char *) xmalloc (len + 6); | |
2137 | memcpy (dumpname, dump_base_name, len + 1); | |
2138 | strip_off_ending (dumpname, len); | |
2139 | strcat (dumpname, ".s"); | |
2140 | asm_file_name = dumpname; | |
2141 | } | |
1fe65c00 PB |
2142 | if (!strcmp (asm_file_name, "-")) |
2143 | asm_out_file = stdout; | |
2144 | else | |
2145 | asm_out_file = fopen (asm_file_name, "w"); | |
2146 | if (asm_out_file == 0) | |
2147 | pfatal_with_name (asm_file_name); | |
2148 | } | |
4291d9c8 | 2149 | |
f246a305 | 2150 | #ifdef IO_BUFFER_SIZE |
1fe65c00 PB |
2151 | setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE), |
2152 | _IOFBF, IO_BUFFER_SIZE); | |
f246a305 | 2153 | #endif |
1fe65c00 | 2154 | } |
f246a305 | 2155 | |
296b4ed9 | 2156 | if (ggc_p && name != 0) |
afe3d090 | 2157 | name = ggc_alloc_string (name, strlen (name)); |
296b4ed9 | 2158 | |
4291d9c8 RS |
2159 | input_filename = name; |
2160 | ||
18736654 | 2161 | /* Put an entry on the input file stack for the main input file. */ |
68723fae | 2162 | push_srcloc (input_filename, 0); |
18736654 | 2163 | |
4291d9c8 RS |
2164 | /* Perform language-specific initialization. |
2165 | This may set main_input_filename. */ | |
2166 | lang_init (); | |
2167 | ||
2168 | /* If the input doesn't start with a #line, use the input name | |
2169 | as the official input file name. */ | |
2170 | if (main_input_filename == 0) | |
2171 | main_input_filename = name; | |
2172 | ||
1fe65c00 PB |
2173 | if (flag_syntax_only) |
2174 | { | |
2175 | write_symbols = NO_DEBUG; | |
2176 | profile_flag = 0; | |
2177 | profile_block_flag = 0; | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | ASM_FILE_START (asm_out_file); | |
3d5cdd42 DE |
2182 | |
2183 | #ifdef ASM_COMMENT_START | |
1fe65c00 PB |
2184 | if (flag_verbose_asm) |
2185 | { | |
2186 | /* Print the list of options in effect. */ | |
2187 | print_version (asm_out_file, ASM_COMMENT_START); | |
2188 | print_switch_values (asm_out_file, 0, MAX_LINE, | |
3d5cdd42 | 2189 | ASM_COMMENT_START, " ", "\n"); |
1fe65c00 PB |
2190 | /* Add a blank line here so it appears in assembler output but not |
2191 | screen output. */ | |
2192 | fprintf (asm_out_file, "\n"); | |
2193 | } | |
b93a436e | 2194 | #endif |
4291d9c8 | 2195 | |
1fe65c00 | 2196 | /* Output something to inform GDB that this compilation was by GCC. */ |
4291d9c8 | 2197 | #ifndef ASM_IDENTIFY_GCC |
1fe65c00 | 2198 | fprintf (asm_out_file, "gcc2_compiled.:\n"); |
4291d9c8 | 2199 | #else |
1fe65c00 | 2200 | ASM_IDENTIFY_GCC (asm_out_file); |
4291d9c8 | 2201 | #endif |
d0d4af87 | 2202 | |
0f41302f | 2203 | /* Output something to identify which front-end produced this file. */ |
d0d4af87 | 2204 | #ifdef ASM_IDENTIFY_LANGUAGE |
1fe65c00 | 2205 | ASM_IDENTIFY_LANGUAGE (asm_out_file); |
d0d4af87 | 2206 | #endif |
1fe65c00 | 2207 | } /* ! flag_syntax_only */ |
d0d4af87 | 2208 | |
cf440348 JL |
2209 | #ifndef ASM_OUTPUT_SECTION_NAME |
2210 | if (flag_function_sections) | |
2211 | { | |
2212 | warning ("-ffunction-sections not supported for this target."); | |
2213 | flag_function_sections = 0; | |
2214 | } | |
257441db CM |
2215 | if (flag_data_sections) |
2216 | { | |
2217 | warning ("-fdata-sections not supported for this target."); | |
2218 | flag_data_sections = 0; | |
2219 | } | |
cf440348 JL |
2220 | #endif |
2221 | ||
2222 | if (flag_function_sections | |
2223 | && (profile_flag || profile_block_flag)) | |
2224 | { | |
2225 | warning ("-ffunction-sections disabled; it makes profiling impossible."); | |
2226 | flag_function_sections = 0; | |
2227 | } | |
2228 | ||
1746404b | 2229 | #ifndef OBJECT_FORMAT_ELF |
cf440348 JL |
2230 | if (flag_function_sections && write_symbols != NO_DEBUG) |
2231 | warning ("-ffunction-sections may affect debugging on some targets."); | |
1746404b | 2232 | #endif |
cf440348 | 2233 | |
b93a436e JL |
2234 | /* ??? Note: There used to be a conditional here |
2235 | to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined. | |
2236 | This was to guarantee separation between gcc_compiled. and | |
2237 | the first function, for the sake of dbx on Suns. | |
2238 | However, having the extra zero here confused the Emacs | |
2239 | code for unexec, and might confuse other programs too. | |
2240 | Therefore, I took out that change. | |
2241 | In future versions we should find another way to solve | |
2242 | that dbx problem. -- rms, 23 May 93. */ | |
ca695ac9 | 2243 | |
b93a436e JL |
2244 | /* Don't let the first function fall at the same address |
2245 | as gcc_compiled., if profiling. */ | |
2246 | if (profile_flag || profile_block_flag) | |
e5e809f4 JL |
2247 | { |
2248 | /* It's best if we can write a nop here since some | |
2249 | assemblers don't tolerate zeros in the text section. */ | |
5a26ca07 | 2250 | output_asm_insn (get_insn_template (CODE_FOR_nop, NULL), NULL_PTR); |
e5e809f4 | 2251 | } |
4291d9c8 RS |
2252 | |
2253 | /* If dbx symbol table desired, initialize writing it | |
2254 | and output the predefined types. */ | |
2a9a326b | 2255 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2256 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2257 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2258 | dbxout_init (asm_out_file, main_input_filename, getdecls ()); |
4291d9c8 RS |
2259 | #endif |
2260 | #ifdef SDB_DEBUGGING_INFO | |
2261 | if (write_symbols == SDB_DEBUG) | |
2a9a326b | 2262 | sdbout_init (asm_out_file, main_input_filename, getdecls ()); |
4291d9c8 RS |
2263 | #endif |
2264 | #ifdef DWARF_DEBUGGING_INFO | |
2265 | if (write_symbols == DWARF_DEBUG) | |
2a9a326b | 2266 | dwarfout_init (asm_out_file, main_input_filename); |
4291d9c8 | 2267 | #endif |
0021b564 JM |
2268 | #ifdef DWARF2_UNWIND_INFO |
2269 | if (dwarf2out_do_frame ()) | |
2270 | dwarf2out_frame_init (); | |
2271 | #endif | |
9a666dda JM |
2272 | #ifdef DWARF2_DEBUGGING_INFO |
2273 | if (write_symbols == DWARF2_DEBUG) | |
2a9a326b | 2274 | dwarf2out_init (asm_out_file, main_input_filename); |
9a666dda | 2275 | #endif |
2a9a326b | 2276 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2277 | |
2278 | /* Initialize yet another pass. */ | |
2279 | ||
b93a436e | 2280 | init_final (main_input_filename); |
0d332add | 2281 | init_branch_prob (dump_base_name); |
4291d9c8 | 2282 | |
2a9a326b | 2283 | timevar_push (TV_PARSE); |
4291d9c8 RS |
2284 | |
2285 | /* Call the parser, which parses the entire file | |
2286 | (calling rest_of_compilation for each function). */ | |
2287 | ||
2288 | if (yyparse () != 0) | |
453dfc78 JW |
2289 | { |
2290 | if (errorcount == 0) | |
6ed551b4 | 2291 | fnotice (stderr, "Errors detected in input file (your bison.simple is out of date)\n"); |
453dfc78 JW |
2292 | |
2293 | /* In case there were missing closebraces, | |
2294 | get us back to the global binding level. */ | |
2295 | while (! global_bindings_p ()) | |
2296 | poplevel (0, 0, 0); | |
2297 | } | |
4291d9c8 RS |
2298 | |
2299 | /* Compilation is now finished except for writing | |
2300 | what's left of the symbol table output. */ | |
2301 | ||
2a9a326b | 2302 | timevar_pop (TV_PARSE); |
4291d9c8 | 2303 | |
1fe65c00 PB |
2304 | if (flag_syntax_only) |
2305 | goto finish_syntax; | |
2306 | ||
4291d9c8 RS |
2307 | globals = getdecls (); |
2308 | ||
2309 | /* Really define vars that have had only a tentative definition. | |
2310 | Really output inline functions that must actually be callable | |
2311 | and have not been output so far. */ | |
2312 | ||
2313 | { | |
2314 | int len = list_length (globals); | |
4da896b2 | 2315 | tree *vec = (tree *) xmalloc (sizeof (tree) * len); |
4291d9c8 RS |
2316 | int i; |
2317 | tree decl; | |
2318 | ||
2319 | /* Process the decls in reverse order--earliest first. | |
2320 | Put them into VEC from back to front, then take out from front. */ | |
2321 | ||
2322 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) | |
2323 | vec[len - i - 1] = decl; | |
2324 | ||
32291f94 | 2325 | wrapup_global_declarations (vec, len); |
4291d9c8 | 2326 | |
2668793e JL |
2327 | /* This must occur after the loop to output deferred functions. Else |
2328 | the profiler initializer would not be emitted if all the functions | |
2329 | in this compilation unit were deferred. | |
2330 | ||
2331 | output_func_start_profiler can not cause any additional functions or | |
2332 | data to need to be output, so it need not be in the deferred function | |
2333 | loop above. */ | |
2334 | output_func_start_profiler (); | |
2335 | ||
3d195391 MS |
2336 | /* Now that all possible functions have been output, we can dump |
2337 | the exception table. */ | |
2338 | ||
ce152ef8 | 2339 | #ifndef IA64_UNWIND_INFO |
0021b564 | 2340 | output_exception_table (); |
ce152ef8 AM |
2341 | #endif |
2342 | free_exception_table (); | |
2343 | ||
6c3fce73 | 2344 | check_global_declarations (vec, len); |
4da896b2 MM |
2345 | |
2346 | /* Clean up. */ | |
2347 | free (vec); | |
4291d9c8 RS |
2348 | } |
2349 | ||
4b8af8d9 JM |
2350 | /* Write out any pending weak symbol declarations. */ |
2351 | ||
2352 | weak_finish (); | |
2353 | ||
4291d9c8 | 2354 | /* Do dbx symbols */ |
2a9a326b | 2355 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2356 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2357 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2358 | dbxout_finish (asm_out_file, main_input_filename); |
4291d9c8 RS |
2359 | #endif |
2360 | ||
2361 | #ifdef DWARF_DEBUGGING_INFO | |
2362 | if (write_symbols == DWARF_DEBUG) | |
2a9a326b | 2363 | dwarfout_finish (); |
4291d9c8 RS |
2364 | #endif |
2365 | ||
0021b564 JM |
2366 | #ifdef DWARF2_UNWIND_INFO |
2367 | if (dwarf2out_do_frame ()) | |
2368 | dwarf2out_frame_finish (); | |
2369 | #endif | |
2370 | ||
9a666dda JM |
2371 | #ifdef DWARF2_DEBUGGING_INFO |
2372 | if (write_symbols == DWARF2_DEBUG) | |
2a9a326b | 2373 | dwarf2out_finish (); |
9a666dda | 2374 | #endif |
2a9a326b | 2375 | timevar_pop (TV_SYMOUT); |
9a666dda | 2376 | |
4291d9c8 RS |
2377 | /* Output some stuff at end of file if nec. */ |
2378 | ||
b93a436e | 2379 | end_final (dump_base_name); |
032713aa | 2380 | |
51891abe | 2381 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) |
61098249 | 2382 | { |
2a9a326b | 2383 | timevar_push (TV_DUMP); |
61098249 | 2384 | open_dump_file (DFI_bp, NULL); |
51891abe JH |
2385 | |
2386 | end_branch_prob (); | |
2387 | ||
61098249 | 2388 | close_dump_file (DFI_bp, NULL, NULL_RTX); |
2a9a326b | 2389 | timevar_pop (TV_DUMP); |
61098249 | 2390 | } |
032713aa | 2391 | |
4291d9c8 | 2392 | #ifdef ASM_FILE_END |
b93a436e | 2393 | ASM_FILE_END (asm_out_file); |
4291d9c8 RS |
2394 | #endif |
2395 | ||
4291d9c8 | 2396 | /* Language-specific end of compilation actions. */ |
1fe65c00 | 2397 | finish_syntax: |
4291d9c8 RS |
2398 | lang_finish (); |
2399 | ||
2400 | /* Close the dump files. */ | |
2401 | ||
2402 | if (flag_gen_aux_info) | |
2403 | { | |
2404 | fclose (aux_info_file); | |
2405 | if (errorcount) | |
2406 | unlink (aux_info_file_name); | |
2407 | } | |
2408 | ||
61098249 | 2409 | if (optimize > 0 && open_dump_file (DFI_combine, NULL)) |
4291d9c8 | 2410 | { |
2a9a326b AS |
2411 | timevar_push (TV_DUMP); |
2412 | dump_combine_total_stats (rtl_dump_file); | |
61098249 | 2413 | close_dump_file (DFI_combine, NULL, NULL_RTX); |
2a9a326b | 2414 | timevar_pop (TV_DUMP); |
4291d9c8 RS |
2415 | } |
2416 | ||
4291d9c8 RS |
2417 | /* Close non-debugging input and output files. Take special care to note |
2418 | whether fclose returns an error, since the pages might still be on the | |
2419 | buffer chain while the file is open. */ | |
2420 | ||
e3d1fd32 | 2421 | finish_parse (); |
e56e519d | 2422 | |
1fe65c00 PB |
2423 | if (! flag_syntax_only |
2424 | && (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)) | |
4291d9c8 RS |
2425 | fatal_io_error (asm_file_name); |
2426 | ||
735a0e33 UD |
2427 | /* Do whatever is necessary to finish printing the graphs. */ |
2428 | if (graph_dump_format != no_graph) | |
2429 | { | |
61098249 RH |
2430 | int i; |
2431 | ||
2432 | for (i = 0; i < DFI_MAX; ++i) | |
2433 | if (dump_file[i].initialized && dump_file[i].graph_dump_p) | |
2434 | { | |
2435 | char seq[16]; | |
2436 | char *suffix; | |
2437 | ||
2438 | sprintf (seq, ".%02d.", i); | |
2439 | suffix = concat (seq, dump_file[i].extension, NULL); | |
2440 | finish_graph_dump_file (dump_base_name, suffix); | |
2441 | free (suffix); | |
2442 | } | |
735a0e33 UD |
2443 | } |
2444 | ||
ed396e68 BS |
2445 | /* Free up memory for the benefit of leak detectors. */ |
2446 | free_reg_info (); | |
2447 | ||
2a9a326b AS |
2448 | /* Stop timing total execution time. */ |
2449 | timevar_stop (TV_TOTAL); | |
2450 | ||
4291d9c8 RS |
2451 | /* Print the times. */ |
2452 | ||
2453 | if (! quiet_flag) | |
2a9a326b | 2454 | timevar_print (stderr); |
4291d9c8 RS |
2455 | } |
2456 | \f | |
2457 | /* This is called from various places for FUNCTION_DECL, VAR_DECL, | |
2458 | and TYPE_DECL nodes. | |
2459 | ||
ef6748cb MM |
2460 | This does nothing for local (non-static) variables, unless the |
2461 | variable is a register variable with an ASMSPEC. In that case, or | |
2462 | if the variable is not an automatice, it sets up the RTL and | |
2463 | outputs any assembler code (label definition, storage allocation | |
2464 | and initialization). | |
4291d9c8 RS |
2465 | |
2466 | DECL is the declaration. If ASMSPEC is nonzero, it specifies | |
2467 | the assembler symbol name to be used. TOP_LEVEL is nonzero | |
2468 | if this declaration is not within a function. */ | |
2469 | ||
2470 | void | |
2471 | rest_of_decl_compilation (decl, asmspec, top_level, at_end) | |
2472 | tree decl; | |
87e11268 | 2473 | const char *asmspec; |
4291d9c8 RS |
2474 | int top_level; |
2475 | int at_end; | |
2476 | { | |
2477 | /* Declarations of variables, and of functions defined elsewhere. */ | |
2478 | ||
928eb380 RS |
2479 | /* The most obvious approach, to put an #ifndef around where |
2480 | this macro is used, doesn't work since it's inside a macro call. */ | |
2481 | #ifndef ASM_FINISH_DECLARE_OBJECT | |
2482 | #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END) | |
2483 | #endif | |
2484 | ||
4291d9c8 RS |
2485 | /* Forward declarations for nested functions are not "external", |
2486 | but we need to treat them as if they were. */ | |
216d5cdd | 2487 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl) |
4291d9c8 | 2488 | || TREE_CODE (decl) == FUNCTION_DECL) |
2a9a326b AS |
2489 | { |
2490 | timevar_push (TV_VARCONST); | |
2491 | make_decl_rtl (decl, asmspec, top_level); | |
2492 | /* Initialized extern variable exists to be replaced | |
2493 | with its value, or represents something that will be | |
2494 | output in another file. */ | |
2495 | if (! (TREE_CODE (decl) == VAR_DECL | |
2496 | && DECL_EXTERNAL (decl) && TREE_READONLY (decl) | |
2497 | && DECL_INITIAL (decl) != 0 | |
2498 | && DECL_INITIAL (decl) != error_mark_node)) | |
2499 | /* Don't output anything | |
2500 | when a tentative file-scope definition is seen. | |
2501 | But at end of compilation, do output code for them. */ | |
2502 | if (! (! at_end && top_level | |
2503 | && (DECL_INITIAL (decl) == 0 | |
2504 | || DECL_INITIAL (decl) == error_mark_node))) | |
2505 | assemble_variable (decl, top_level, at_end, 0); | |
2506 | if (decl == last_assemble_variable_decl) | |
2507 | { | |
2508 | ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl, | |
2509 | top_level, at_end); | |
2510 | } | |
2511 | timevar_pop (TV_VARCONST); | |
2512 | } | |
216d5cdd | 2513 | else if (DECL_REGISTER (decl) && asmspec != 0) |
4291d9c8 RS |
2514 | { |
2515 | if (decode_reg_name (asmspec) >= 0) | |
2516 | { | |
2517 | DECL_RTL (decl) = 0; | |
2518 | make_decl_rtl (decl, asmspec, top_level); | |
2519 | } | |
2520 | else | |
2521 | error ("invalid register name `%s' for register variable", asmspec); | |
2522 | } | |
f246a305 RS |
2523 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2524 | else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2525 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2526 | { |
2527 | timevar_push (TV_SYMOUT); | |
2528 | dbxout_symbol (decl, 0); | |
2529 | timevar_pop (TV_SYMOUT); | |
2530 | } | |
4291d9c8 RS |
2531 | #endif |
2532 | #ifdef SDB_DEBUGGING_INFO | |
2533 | else if (write_symbols == SDB_DEBUG && top_level | |
2534 | && TREE_CODE (decl) == TYPE_DECL) | |
2a9a326b AS |
2535 | { |
2536 | timevar_push (TV_SYMOUT); | |
2537 | sdbout_symbol (decl, 0); | |
2538 | timevar_pop (TV_SYMOUT); | |
2539 | } | |
4291d9c8 RS |
2540 | #endif |
2541 | } | |
2542 | ||
2543 | /* Called after finishing a record, union or enumeral type. */ | |
2544 | ||
2545 | void | |
2546 | rest_of_type_compilation (type, toplev) | |
114791ea | 2547 | #if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO) || defined (SDB_DEBUGGING_INFO) |
4291d9c8 RS |
2548 | tree type; |
2549 | int toplev; | |
114791ea KG |
2550 | #else |
2551 | tree type ATTRIBUTE_UNUSED; | |
2552 | int toplev ATTRIBUTE_UNUSED; | |
2553 | #endif | |
4291d9c8 | 2554 | { |
2a9a326b | 2555 | timevar_push (TV_SYMOUT); |
f246a305 RS |
2556 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
2557 | if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG) | |
2a9a326b | 2558 | dbxout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 RS |
2559 | #endif |
2560 | #ifdef SDB_DEBUGGING_INFO | |
2561 | if (write_symbols == SDB_DEBUG) | |
d8d1d62b | 2562 | sdbout_symbol (TYPE_STUB_DECL (type), !toplev); |
4291d9c8 | 2563 | #endif |
2a9a326b | 2564 | timevar_pop (TV_SYMOUT); |
4291d9c8 RS |
2565 | } |
2566 | ||
de23a892 MM |
2567 | /* DECL is an inline function, whose body is present, but which is not |
2568 | being output at this point. (We're putting that off until we need | |
2569 | to do it.) If there are any actions that need to take place, | |
2570 | including the emission of debugging information for the function, | |
2571 | this is where they should go. This function may be called by | |
2572 | language-dependent code for front-ends that do not even generate | |
2573 | RTL for functions that don't need to be put out. */ | |
2574 | ||
2575 | void | |
2576 | note_deferral_of_defined_inline_function (decl) | |
0ce8a59c | 2577 | tree decl ATTRIBUTE_UNUSED; |
de23a892 MM |
2578 | { |
2579 | #ifdef DWARF_DEBUGGING_INFO | |
2580 | /* Generate the DWARF info for the "abstract" instance of a function | |
2581 | which we may later generate inlined and/or out-of-line instances | |
2582 | of. */ | |
1cfdcc15 | 2583 | if (write_symbols == DWARF_DEBUG && DECL_INLINE (decl)) |
de23a892 MM |
2584 | { |
2585 | /* The front-end may not have set CURRENT_FUNCTION_DECL, but the | |
2586 | DWARF code expects it to be set in this case. Intuitively, | |
2587 | DECL is the function we just finished defining, so setting | |
2588 | CURRENT_FUNCTION_DECL is sensible. */ | |
2589 | tree saved_cfd = current_function_decl; | |
2590 | current_function_decl = decl; | |
2591 | ||
2592 | /* Let the DWARF code do its work. */ | |
2593 | set_decl_abstract_flags (decl, 1); | |
2594 | dwarfout_file_scope_decl (decl, 0); | |
2595 | set_decl_abstract_flags (decl, 0); | |
2596 | ||
2597 | /* Reset CURRENT_FUNCTION_DECL. */ | |
2598 | current_function_decl = saved_cfd; | |
2599 | } | |
2600 | #endif | |
2601 | } | |
2602 | ||
4291d9c8 RS |
2603 | /* This is called from finish_function (within yyparse) |
2604 | after each top-level definition is parsed. | |
2605 | It is supposed to compile that function or variable | |
2606 | and output the assembler code for it. | |
2607 | After we return, the tree storage is freed. */ | |
2608 | ||
2609 | void | |
2610 | rest_of_compilation (decl) | |
2611 | tree decl; | |
2612 | { | |
2613 | register rtx insns; | |
4291d9c8 | 2614 | int tem; |
ab40ad2b | 2615 | int failure = 0; |
c4403371 | 2616 | int rebuild_label_notes_after_reload; |
7b40bc6b | 2617 | int register_life_up_to_date; |
4291d9c8 | 2618 | |
2a9a326b AS |
2619 | timevar_push (TV_REST_OF_COMPILATION); |
2620 | ||
d511f9d5 AO |
2621 | /* When processing delayed functions, prepare_function_start() won't |
2622 | have been run to re-initialize it. */ | |
2623 | cse_not_expected = ! optimize; | |
2624 | ||
fcd7f76b JM |
2625 | /* First, make sure that NOTE_BLOCK is set correctly for each |
2626 | NOTE_INSN_BLOCK_BEG/NOTE_INSN_BLOCK_END note. */ | |
116eebd6 MM |
2627 | if (!cfun->x_whole_function_mode_p) |
2628 | identify_blocks (); | |
fcd7f76b JM |
2629 | |
2630 | /* Then remove any notes we don't need. That will make iterating | |
aeeeda03 MM |
2631 | over the instruction sequence faster, and allow the garbage |
2632 | collector to reclaim the memory used by the notes. */ | |
64b59a80 | 2633 | remove_unnecessary_notes (); |
aeeeda03 | 2634 | |
e619323d DM |
2635 | /* In function-at-a-time mode, we do not attempt to keep the BLOCK |
2636 | tree in sensible shape. So, we just recalculate it here. */ | |
01d939e8 | 2637 | if (cfun->x_whole_function_mode_p) |
116eebd6 | 2638 | reorder_blocks (); |
e619323d | 2639 | |
4291d9c8 RS |
2640 | /* If we are reconsidering an inline function |
2641 | at the end of compilation, skip the stuff for making it inline. */ | |
2642 | ||
2643 | if (DECL_SAVED_INSNS (decl) == 0) | |
2644 | { | |
956d6950 | 2645 | int inlinable = 0; |
14a774a9 | 2646 | tree parent; |
dff01034 | 2647 | const char *lose; |
4291d9c8 | 2648 | |
14a774a9 RK |
2649 | /* If this is nested inside an inlined external function, pretend |
2650 | it was only declared. Since we cannot inline such functions, | |
2651 | generating code for this one is not only not necessary but will | |
2652 | confuse some debugging output writers. */ | |
2653 | for (parent = DECL_CONTEXT (current_function_decl); | |
140b60b4 MM |
2654 | parent != NULL_TREE; |
2655 | parent = get_containing_scope (parent)) | |
3e038608 MM |
2656 | if (TREE_CODE (parent) == FUNCTION_DECL |
2657 | && DECL_INLINE (parent) && DECL_EXTERNAL (parent)) | |
14a774a9 RK |
2658 | { |
2659 | DECL_INITIAL (decl) = 0; | |
2660 | goto exit_rest_of_compilation; | |
2661 | } | |
2662 | ||
4291d9c8 | 2663 | /* If requested, consider whether to make this function inline. */ |
9deaf1b1 | 2664 | if (DECL_INLINE (decl) || flag_inline_functions) |
2a9a326b AS |
2665 | { |
2666 | timevar_push (TV_INTEGRATION); | |
2667 | lose = function_cannot_inline_p (decl); | |
2668 | timevar_pop (TV_INTEGRATION); | |
2669 | if (lose || ! optimize) | |
2670 | { | |
2671 | if (warn_inline && DECL_INLINE (decl)) | |
2672 | warning_with_decl (decl, lose); | |
2673 | DECL_ABSTRACT_ORIGIN (decl) = 0; | |
2674 | /* Don't really compile an extern inline function. | |
2675 | If we can't make it inline, pretend | |
2676 | it was only declared. */ | |
2677 | if (DECL_EXTERNAL (decl)) | |
2678 | { | |
2679 | DECL_INITIAL (decl) = 0; | |
2680 | goto exit_rest_of_compilation; | |
2681 | } | |
2682 | } | |
2683 | else | |
2684 | /* ??? Note that this has the effect of making it look | |
2685 | like "inline" was specified for a function if we choose | |
2686 | to inline it. This isn't quite right, but it's | |
2687 | probably not worth the trouble to fix. */ | |
2688 | inlinable = DECL_INLINE (decl) = 1; | |
2689 | } | |
4291d9c8 RS |
2690 | |
2691 | insns = get_insns (); | |
2692 | ||
2693 | /* Dump the rtl code if we are dumping rtl. */ | |
2694 | ||
61098249 | 2695 | if (open_dump_file (DFI_rtl, decl)) |
032713aa | 2696 | { |
032713aa NC |
2697 | if (DECL_SAVED_INSNS (decl)) |
2698 | fprintf (rtl_dump_file, ";; (integrable)\n\n"); | |
61098249 | 2699 | close_dump_file (DFI_rtl, print_rtl, insns); |
032713aa | 2700 | } |
4291d9c8 RS |
2701 | |
2702 | /* If function is inline, and we don't yet know whether to | |
2703 | compile it by itself, defer decision till end of compilation. | |
2704 | finish_compilation will call rest_of_compilation again | |
16411ea6 | 2705 | for those functions that need to be output. Also defer those |
36edd3cc BS |
2706 | functions that we are supposed to defer. */ |
2707 | ||
fcd7f76b | 2708 | if (inlinable |
36edd3cc BS |
2709 | || (DECL_INLINE (decl) |
2710 | && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl) | |
2711 | && ! flag_keep_inline_functions) | |
2712 | || DECL_EXTERNAL (decl)))) | |
fcd7f76b | 2713 | DECL_DEFER_OUTPUT (decl) = 1; |
951af26e | 2714 | |
f1f39752 JM |
2715 | if (DECL_INLINE (decl)) |
2716 | /* DWARF wants seperate debugging info for abstract and | |
2717 | concrete instances of all inline functions, including those | |
2718 | declared inline but not inlined, and those inlined even | |
2719 | though they weren't declared inline. Conveniently, that's | |
2720 | what DECL_INLINE means at this point. */ | |
2721 | note_deferral_of_defined_inline_function (decl); | |
2722 | ||
fcd7f76b JM |
2723 | if (DECL_DEFER_OUTPUT (decl)) |
2724 | { | |
a701efba MM |
2725 | /* If -Wreturn-type, we have to do a bit of compilation. |
2726 | However, if we just fall through we will call | |
2727 | save_for_inline_copying() which results in excessive | |
2728 | memory use. Instead, we just want to call | |
2729 | jump_optimize() to figure out whether or not we can fall | |
2730 | off the end of the function; we do the minimum amount of | |
2731 | work necessary to make that safe. And, we set optimize | |
2732 | to zero to keep jump_optimize from working too hard. */ | |
2733 | if (warn_return_type) | |
937522b5 | 2734 | { |
a701efba MM |
2735 | int saved_optimize = optimize; |
2736 | optimize = 0; | |
2737 | find_exception_handler_labels (); | |
a18820c6 | 2738 | jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, |
14bf4a33 | 2739 | !JUMP_AFTER_REGSCAN); |
a701efba MM |
2740 | optimize = saved_optimize; |
2741 | } | |
2742 | ||
dd1ba632 JM |
2743 | current_function_nothrow = nothrow_function_p (); |
2744 | if (current_function_nothrow) | |
2745 | /* Now we know that this can't throw; set the flag for the benefit | |
2746 | of other functions later in this translation unit. */ | |
2747 | TREE_NOTHROW (current_function_decl) = 1; | |
2748 | ||
2a9a326b AS |
2749 | timevar_push (TV_INTEGRATION); |
2750 | save_for_inline_nocopy (decl); | |
2751 | timevar_pop (TV_INTEGRATION); | |
49ad7cfa | 2752 | DECL_SAVED_INSNS (decl)->inlinable = inlinable; |
a701efba | 2753 | goto exit_rest_of_compilation; |
4291d9c8 RS |
2754 | } |
2755 | ||
b8471b65 | 2756 | /* If specified extern inline but we aren't inlining it, we are |
1cbe6eb6 JM |
2757 | done. This goes for anything that gets here with DECL_EXTERNAL |
2758 | set, not just things with DECL_INLINE. */ | |
2759 | if (DECL_EXTERNAL (decl)) | |
b8471b65 RK |
2760 | goto exit_rest_of_compilation; |
2761 | } | |
07af9d16 | 2762 | |
994a57cd RH |
2763 | init_EXPR_INSN_LIST_cache (); |
2764 | ||
0a1c58a2 JL |
2765 | if (ggc_p) |
2766 | ggc_collect (); | |
2767 | ||
49ad7cfa BS |
2768 | /* Initialize some variables used by the optimizers. */ |
2769 | init_function_for_compilation (); | |
2770 | ||
951af26e JM |
2771 | if (! DECL_DEFER_OUTPUT (decl)) |
2772 | TREE_ASM_WRITTEN (decl) = 1; | |
4291d9c8 RS |
2773 | |
2774 | /* Now that integrate will no longer see our rtl, we need not distinguish | |
2775 | between the return value of this function and the return value of called | |
2776 | functions. */ | |
2777 | rtx_equal_function_value_matters = 0; | |
2778 | ||
32235b30 RS |
2779 | /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */ |
2780 | if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type) | |
a18820c6 | 2781 | goto exit_rest_of_compilation; |
4291d9c8 | 2782 | |
154bba13 TT |
2783 | /* Emit code to get eh context, if needed. */ |
2784 | emit_eh_context (); | |
2785 | ||
9d9e5c09 RH |
2786 | /* We may have potential sibling or tail recursion sites. Select one |
2787 | (of possibly multiple) methods of performing the call. */ | |
2788 | if (flag_optimize_sibling_calls) | |
2789 | { | |
2a9a326b | 2790 | timevar_push (TV_JUMP); |
9d9e5c09 RH |
2791 | open_dump_file (DFI_sibling, decl); |
2792 | ||
2a9a326b | 2793 | optimize_sibling_and_tail_recursive_calls (); |
9d9e5c09 RH |
2794 | |
2795 | close_dump_file (DFI_sibling, print_rtl, get_insns ()); | |
2a9a326b | 2796 | timevar_pop (TV_JUMP); |
9d9e5c09 | 2797 | } |
2a9a326b | 2798 | |
4291d9c8 RS |
2799 | #ifdef FINALIZE_PIC |
2800 | /* If we are doing position-independent code generation, now | |
2801 | is the time to output special prologues and epilogues. | |
2802 | We do not want to do this earlier, because it just clutters | |
2803 | up inline functions with meaningless insns. */ | |
2804 | if (flag_pic) | |
2805 | FINALIZE_PIC; | |
2806 | #endif | |
2807 | ||
89418a92 BK |
2808 | /* From now on, allocate rtl in current_obstack, not in saveable_obstack. |
2809 | Note that that may have been done above, in save_for_inline_copying. | |
2810 | The call to resume_temporary_allocation near the end of this function | |
2811 | goes back to the usual state of affairs. This must be done after | |
2812 | we've built up any unwinders for exception handling, and done | |
2813 | the FINALIZE_PIC work, if necessary. */ | |
2814 | ||
2815 | rtl_in_current_obstack (); | |
3d195391 | 2816 | |
4291d9c8 RS |
2817 | insns = get_insns (); |
2818 | ||
2819 | /* Copy any shared structure that should not be shared. */ | |
d1b81779 | 2820 | unshare_all_rtl (current_function_decl, insns); |
4291d9c8 | 2821 | |
c9ec4f99 DM |
2822 | #ifdef SETJMP_VIA_SAVE_AREA |
2823 | /* This must be performed before virutal register instantiation. */ | |
2824 | if (current_function_calls_alloca) | |
2825 | optimize_save_area_alloca (insns); | |
2826 | #endif | |
2827 | ||
4291d9c8 | 2828 | /* Instantiate all virtual registers. */ |
a18820c6 | 2829 | instantiate_virtual_regs (current_function_decl, insns); |
4291d9c8 | 2830 | |
3d195391 MS |
2831 | /* Find all the EH handlers. */ |
2832 | find_exception_handler_labels (); | |
2833 | ||
61098249 | 2834 | open_dump_file (DFI_jump, decl); |
02db399d | 2835 | |
cc4e79d8 JL |
2836 | /* Always do one jump optimization pass to ensure that JUMP_LABEL fields |
2837 | are initialized and to compute whether control can drop off the end | |
2838 | of the function. */ | |
994a57cd | 2839 | |
2a9a326b AS |
2840 | timevar_push (TV_JUMP); |
2841 | /* Turn NOTE_INSN_EXPECTED_VALUE into REG_BR_PROB. Do this | |
2842 | before jump optimization switches branch directions. */ | |
2843 | expected_value_to_br_prob (); | |
2844 | ||
2845 | reg_scan (insns, max_reg_num (), 0); | |
2846 | jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, | |
2847 | JUMP_AFTER_REGSCAN); | |
2848 | ||
2849 | timevar_pop (TV_JUMP); | |
673b5311 | 2850 | |
32235b30 | 2851 | /* Now is when we stop if -fsyntax-only and -Wreturn-type. */ |
951af26e | 2852 | if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl)) |
a18820c6 RH |
2853 | { |
2854 | close_dump_file (DFI_jump, print_rtl, insns); | |
2855 | goto exit_rest_of_compilation; | |
2856 | } | |
2857 | ||
2a9a326b | 2858 | timevar_push (TV_JUMP); |
9ec6d7ab RH |
2859 | |
2860 | if (optimize > 0) | |
2a9a326b AS |
2861 | { |
2862 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2863 | cleanup_cfg (insns); | |
9ec6d7ab RH |
2864 | |
2865 | /* ??? Run if-conversion before delete_null_pointer_checks, | |
2866 | since the later does not preserve the CFG. This should | |
2867 | be changed -- no since converting if's that are going to | |
2868 | be deleted. */ | |
2869 | timevar_push (TV_IFCVT); | |
2870 | if_convert (0); | |
2871 | timevar_pop (TV_IFCVT); | |
2872 | ||
2873 | /* Try to identify useless null pointer tests and delete them. */ | |
2874 | if (flag_delete_null_pointer_checks) | |
2875 | delete_null_pointer_checks (insns); | |
2a9a326b AS |
2876 | } |
2877 | ||
2878 | /* Jump optimization, and the removal of NULL pointer checks, may | |
2879 | have reduced the number of instructions substantially. CSE, and | |
2880 | future passes, allocate arrays whose dimensions involve the | |
2881 | maximum instruction UID, so if we can reduce the maximum UID | |
2882 | we'll save big on memory. */ | |
2883 | renumber_insns (rtl_dump_file); | |
2884 | timevar_pop (TV_JUMP); | |
a18820c6 RH |
2885 | |
2886 | close_dump_file (DFI_jump, print_rtl, insns); | |
dfdb644f | 2887 | |
a3770a81 RH |
2888 | if (ggc_p) |
2889 | ggc_collect (); | |
2890 | ||
4291d9c8 RS |
2891 | /* Perform common subexpression elimination. |
2892 | Nonzero value from `cse_main' means that jumps were simplified | |
2893 | and some code may now be unreachable, so do | |
2894 | jump optimization again. */ | |
2895 | ||
4291d9c8 RS |
2896 | if (optimize > 0) |
2897 | { | |
61098249 | 2898 | open_dump_file (DFI_cse, decl); |
2a9a326b | 2899 | timevar_push (TV_CSE); |
032713aa | 2900 | |
2a9a326b | 2901 | reg_scan (insns, max_reg_num (), 1); |
4291d9c8 RS |
2902 | |
2903 | if (flag_thread_jumps) | |
2a9a326b AS |
2904 | { |
2905 | timevar_push (TV_JUMP); | |
2906 | thread_jumps (insns, max_reg_num (), 1); | |
2907 | timevar_pop (TV_JUMP); | |
2908 | } | |
4291d9c8 | 2909 | |
2a9a326b | 2910 | tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); |
a18820c6 | 2911 | |
c5c76735 JL |
2912 | /* If we are not running the second CSE pass, then we are no longer |
2913 | expecting CSE to be run. */ | |
2914 | cse_not_expected = !flag_rerun_cse_after_loop; | |
2915 | ||
534bfae4 | 2916 | if (tem || optimize > 1) |
2a9a326b AS |
2917 | { |
2918 | timevar_push (TV_JUMP); | |
2919 | jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, | |
2920 | !JUMP_AFTER_REGSCAN); | |
2921 | timevar_pop (TV_JUMP); | |
2922 | } | |
dfdb644f | 2923 | |
e48a7fbe JL |
2924 | /* Run this after jump optmizations remove all the unreachable code |
2925 | so that unreachable code will not keep values live. */ | |
2a9a326b | 2926 | delete_trivially_dead_insns (insns, max_reg_num ()); |
e48a7fbe | 2927 | |
dfdb644f | 2928 | /* Try to identify useless null pointer tests and delete them. */ |
b6d24183 | 2929 | if (flag_delete_null_pointer_checks) |
2a9a326b AS |
2930 | { |
2931 | timevar_push (TV_JUMP); | |
2932 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
2933 | ||
2934 | cleanup_cfg (insns); | |
2935 | ||
2936 | delete_null_pointer_checks (insns); | |
2937 | timevar_pop (TV_JUMP); | |
2938 | } | |
4291d9c8 | 2939 | |
673b5311 MM |
2940 | /* The second pass of jump optimization is likely to have |
2941 | removed a bunch more instructions. */ | |
2942 | renumber_insns (rtl_dump_file); | |
735a0e33 | 2943 | |
2a9a326b | 2944 | timevar_pop (TV_CSE); |
61098249 | 2945 | close_dump_file (DFI_cse, print_rtl, insns); |
032713aa | 2946 | } |
4291d9c8 | 2947 | |
61098249 RH |
2948 | open_dump_file (DFI_addressof, decl); |
2949 | ||
e9a25f70 JL |
2950 | purge_addressof (insns); |
2951 | reg_scan (insns, max_reg_num (), 1); | |
2952 | ||
61098249 | 2953 | close_dump_file (DFI_addressof, print_rtl, insns); |
735a0e33 | 2954 | |
a3770a81 RH |
2955 | if (ggc_p) |
2956 | ggc_collect (); | |
2957 | ||
a18820c6 | 2958 | if (optimize > 0 && flag_ssa) |
d9d4fb43 | 2959 | { |
2a9a326b AS |
2960 | /* Convert to SSA form. */ |
2961 | ||
2962 | timevar_push (TV_TO_SSA); | |
61098249 | 2963 | open_dump_file (DFI_ssa, decl); |
a18820c6 | 2964 | |
2a9a326b AS |
2965 | find_basic_blocks (insns, max_reg_num(), rtl_dump_file); |
2966 | cleanup_cfg (insns); | |
2967 | convert_to_ssa (); | |
a18820c6 | 2968 | |
61098249 | 2969 | close_dump_file (DFI_ssa, print_rtl_with_bb, insns); |
2a9a326b | 2970 | timevar_pop (TV_TO_SSA); |
d9d4fb43 | 2971 | |
2a9a326b | 2972 | /* Currently, there's nothing to do in SSA form. */ |
d9d4fb43 | 2973 | |
2a9a326b | 2974 | /* Convert from SSA form. */ |
a18820c6 | 2975 | |
2a9a326b AS |
2976 | timevar_push (TV_FROM_SSA); |
2977 | open_dump_file (DFI_ussa, decl); | |
a18820c6 | 2978 | |
2a9a326b AS |
2979 | convert_from_ssa (); |
2980 | /* New registers have been created. Rescan their usage. */ | |
2981 | reg_scan (insns, max_reg_num (), 1); | |
2982 | /* Life analysis used in SSA adds log_links but these | |
2983 | shouldn't be there until the flow stage, so clear | |
2984 | them away. */ | |
2985 | clear_log_links (insns); | |
a18820c6 RH |
2986 | |
2987 | close_dump_file (DFI_ussa, print_rtl_with_bb, insns); | |
2a9a326b | 2988 | timevar_pop (TV_FROM_SSA); |
d9d4fb43 AS |
2989 | |
2990 | if (ggc_p) | |
2991 | ggc_collect (); | |
2992 | } | |
2993 | ||
7506f491 DE |
2994 | /* Perform global cse. */ |
2995 | ||
2996 | if (optimize > 0 && flag_gcse) | |
2997 | { | |
2a9a326b | 2998 | timevar_push (TV_GCSE); |
61098249 | 2999 | open_dump_file (DFI_gcse, decl); |
735a0e33 | 3000 | |
2a9a326b AS |
3001 | find_basic_blocks (insns, max_reg_num(), rtl_dump_file); |
3002 | cleanup_cfg (insns); | |
3003 | tem = gcse_main (insns, rtl_dump_file); | |
e78d9500 JL |
3004 | |
3005 | /* If gcse altered any jumps, rerun jump optimizations to clean | |
3006 | things up. */ | |
3007 | if (tem) | |
3008 | { | |
2a9a326b AS |
3009 | timevar_push (TV_JUMP); |
3010 | jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES, | |
3011 | !JUMP_AFTER_REGSCAN); | |
3012 | timevar_pop (TV_JUMP); | |
e78d9500 | 3013 | } |
7506f491 | 3014 | |
61098249 | 3015 | close_dump_file (DFI_gcse, print_rtl, insns); |
2a9a326b | 3016 | timevar_pop (TV_GCSE); |
a3770a81 RH |
3017 | |
3018 | if (ggc_p) | |
3019 | ggc_collect (); | |
7506f491 | 3020 | } |
a18820c6 | 3021 | |
4291d9c8 RS |
3022 | /* Move constant computations out of loops. */ |
3023 | ||
3024 | if (optimize > 0) | |
3025 | { | |
2a9a326b | 3026 | timevar_push (TV_LOOP); |
61098249 | 3027 | open_dump_file (DFI_loop, decl); |
2a9a326b AS |
3028 | |
3029 | if (flag_rerun_loop_opt) | |
3030 | { | |
3031 | /* We only want to perform unrolling once. */ | |
032713aa | 3032 | |
1bf14ad7 | 3033 | loop_optimize (insns, rtl_dump_file, 0); |
a18820c6 | 3034 | |
2a9a326b AS |
3035 | /* The first call to loop_optimize makes some instructions |
3036 | trivially dead. We delete those instructions now in the | |
3037 | hope that doing so will make the heuristics in loop work | |
3038 | better and possibly speed up compilation. */ | |
3039 | delete_trivially_dead_insns (insns, max_reg_num ()); | |
c6a26dc4 | 3040 | |
2a9a326b | 3041 | /* The regscan pass is currently necessary as the alias |
c6a26dc4 | 3042 | analysis code depends on this information. */ |
2a9a326b AS |
3043 | reg_scan (insns, max_reg_num (), 1); |
3044 | } | |
1bf14ad7 | 3045 | loop_optimize (insns, rtl_dump_file, (flag_unroll_loops ? LOOP_UNROLL : 0) | LOOP_BCT); |
735a0e33 | 3046 | |
61098249 | 3047 | close_dump_file (DFI_loop, print_rtl, insns); |
2a9a326b | 3048 | timevar_pop (TV_LOOP); |
a3770a81 RH |
3049 | |
3050 | if (ggc_p) | |
3051 | ggc_collect (); | |
4291d9c8 RS |
3052 | } |
3053 | ||
032713aa | 3054 | if (optimize > 0) |
c2f006ec | 3055 | { |
2a9a326b | 3056 | timevar_push (TV_CSE2); |
61098249 | 3057 | open_dump_file (DFI_cse2, decl); |
735a0e33 | 3058 | |
032713aa NC |
3059 | if (flag_rerun_cse_after_loop) |
3060 | { | |
3061 | /* Running another jump optimization pass before the second | |
3062 | cse pass sometimes simplifies the RTL enough to allow | |
3063 | the second CSE pass to do a better job. Jump_optimize can change | |
3064 | max_reg_num so we must rerun reg_scan afterwards. | |
3065 | ??? Rework to not call reg_scan so often. */ | |
2a9a326b | 3066 | timevar_push (TV_JUMP); |
9ec6d7ab | 3067 | |
2a9a326b AS |
3068 | reg_scan (insns, max_reg_num (), 0); |
3069 | jump_optimize (insns, !JUMP_CROSS_JUMP, | |
3070 | !JUMP_NOOP_MOVES, JUMP_AFTER_REGSCAN); | |
9ec6d7ab RH |
3071 | |
3072 | timevar_push (TV_IFCVT); | |
3073 | ||
3074 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3075 | cleanup_cfg (insns); | |
3076 | if_convert (0); | |
3077 | ||
3078 | timevar_pop(TV_IFCVT); | |
3079 | ||
2a9a326b | 3080 | timevar_pop (TV_JUMP); |
032713aa | 3081 | |
2a9a326b AS |
3082 | reg_scan (insns, max_reg_num (), 0); |
3083 | tem = cse_main (insns, max_reg_num (), 1, rtl_dump_file); | |
a18820c6 | 3084 | |
032713aa | 3085 | if (tem) |
2a9a326b AS |
3086 | { |
3087 | timevar_push (TV_JUMP); | |
3088 | jump_optimize (insns, !JUMP_CROSS_JUMP, | |
3089 | !JUMP_NOOP_MOVES, !JUMP_AFTER_REGSCAN); | |
3090 | timevar_pop (TV_JUMP); | |
3091 | } | |
032713aa | 3092 | } |
0d332add | 3093 | |
032713aa NC |
3094 | if (flag_thread_jumps) |
3095 | { | |
3096 | /* This pass of jump threading straightens out code | |
3097 | that was kinked by loop optimization. */ | |
2a9a326b AS |
3098 | timevar_push (TV_JUMP); |
3099 | reg_scan (insns, max_reg_num (), 0); | |
3100 | thread_jumps (insns, max_reg_num (), 0); | |
3101 | timevar_pop (TV_JUMP); | |
032713aa | 3102 | } |
735a0e33 | 3103 | |
61098249 | 3104 | close_dump_file (DFI_cse2, print_rtl, insns); |
2a9a326b | 3105 | timevar_pop (TV_CSE2); |
a3770a81 RH |
3106 | |
3107 | if (ggc_p) | |
3108 | ggc_collect (); | |
032713aa | 3109 | } |
735a0e33 | 3110 | |
9ec6d7ab RH |
3111 | cse_not_expected = 1; |
3112 | ||
4291d9c8 RS |
3113 | regclass_init (); |
3114 | ||
032713aa | 3115 | |
d29c259b RH |
3116 | /* Do control and data flow analysis; wrote some of the results to |
3117 | the dump file. */ | |
4291d9c8 | 3118 | |
2a9a326b | 3119 | timevar_push (TV_FLOW); |
51891abe JH |
3120 | open_dump_file (DFI_cfg, decl); |
3121 | ||
2a9a326b AS |
3122 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
3123 | cleanup_cfg (insns); | |
51891abe JH |
3124 | |
3125 | close_dump_file (DFI_cfg, print_rtl_with_bb, insns); | |
3126 | ||
3127 | if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities) | |
3128 | { | |
3129 | timevar_push (TV_BRANCH_PROB); | |
3130 | open_dump_file (DFI_bp, decl); | |
3131 | ||
3132 | branch_prob (); | |
3133 | ||
3134 | close_dump_file (DFI_bp, print_rtl_with_bb, insns); | |
3135 | timevar_pop (TV_BRANCH_PROB); | |
3136 | } | |
3137 | ||
3138 | open_dump_file (DFI_life, decl); | |
2a9a326b AS |
3139 | if (optimize) |
3140 | { | |
3141 | struct loops loops; | |
604617ba | 3142 | |
2a9a326b AS |
3143 | /* Discover and record the loop depth at the head of each basic |
3144 | block. The loop infrastructure does the real job for us. */ | |
3145 | flow_loops_find (&loops); | |
604617ba | 3146 | |
2a9a326b | 3147 | /* Estimate using heuristics if no profiling info is available. */ |
51891abe | 3148 | estimate_probability (&loops); |
604617ba | 3149 | |
2a9a326b AS |
3150 | if (rtl_dump_file) |
3151 | flow_loops_dump (&loops, rtl_dump_file, 0); | |
604617ba | 3152 | |
2a9a326b AS |
3153 | flow_loops_free (&loops); |
3154 | } | |
3155 | life_analysis (insns, rtl_dump_file, PROP_FINAL); | |
3156 | mark_constant_function (); | |
3157 | timevar_pop (TV_FLOW); | |
5ece9746 | 3158 | |
7b40bc6b RH |
3159 | register_life_up_to_date = 1; |
3160 | no_new_pseudos = 1; | |
3161 | ||
d29c259b RH |
3162 | if (warn_uninitialized || extra_warnings) |
3163 | { | |
3164 | uninitialized_vars_warning (DECL_INITIAL (decl)); | |
3165 | if (extra_warnings) | |
3166 | setjmp_args_warning (); | |
4291d9c8 RS |
3167 | } |
3168 | ||
51891abe | 3169 | close_dump_file (DFI_life, print_rtl_with_bb, insns); |
735a0e33 | 3170 | |
a3770a81 RH |
3171 | if (ggc_p) |
3172 | ggc_collect (); | |
3173 | ||
4291d9c8 RS |
3174 | /* If -opt, try combining insns through substitution. */ |
3175 | ||
3176 | if (optimize > 0) | |
032713aa | 3177 | { |
44a76fc8 AG |
3178 | int rebuild_jump_labels_after_combine = 0; |
3179 | ||
2a9a326b | 3180 | timevar_push (TV_COMBINE); |
61098249 RH |
3181 | open_dump_file (DFI_combine, decl); |
3182 | ||
2a9a326b AS |
3183 | rebuild_jump_labels_after_combine |
3184 | = combine_instructions (insns, max_reg_num ()); | |
44a76fc8 AG |
3185 | |
3186 | /* Combining insns may have turned an indirect jump into a | |
3187 | direct jump. Rebuid the JUMP_LABEL fields of jumping | |
3188 | instructions. */ | |
3189 | if (rebuild_jump_labels_after_combine) | |
3190 | { | |
2a9a326b AS |
3191 | timevar_push (TV_JUMP); |
3192 | rebuild_jump_labels (insns); | |
3193 | timevar_pop (TV_JUMP); | |
9ec6d7ab RH |
3194 | |
3195 | timevar_push (TV_FLOW); | |
3196 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); | |
3197 | cleanup_cfg (insns); | |
3198 | ||
3199 | /* Blimey. We've got to have the CFG up to date for the call to | |
3200 | if_convert below. However, the random deletion of blocks | |
3201 | without updating life info can wind up with Wierd Stuff in | |
3202 | global_live_at_end. We then run sched1, which updates things | |
3203 | properly, discovers the wierdness and aborts. */ | |
3204 | update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, | |
e54d500c JH |
3205 | PROP_DEATH_NOTES | PROP_KILL_DEAD_CODE |
3206 | | PROP_SCAN_DEAD_CODE); | |
9ec6d7ab RH |
3207 | |
3208 | timevar_pop (TV_FLOW); | |
44a76fc8 | 3209 | } |
735a0e33 | 3210 | |
61098249 | 3211 | close_dump_file (DFI_combine, print_rtl_with_bb, insns); |
2a9a326b | 3212 | timevar_pop (TV_COMBINE); |
a3770a81 RH |
3213 | |
3214 | if (ggc_p) | |
3215 | ggc_collect (); | |
032713aa | 3216 | } |
8c660648 | 3217 | |
9ec6d7ab RH |
3218 | /* Rerun if-conversion, as combine may have simplified things enough to |
3219 | now meet sequence length restrictions. */ | |
3220 | if (optimize > 0) | |
3221 | { | |
3222 | timevar_push (TV_IFCVT); | |
3223 | open_dump_file (DFI_ce, decl); | |
3224 | ||
7b40bc6b | 3225 | no_new_pseudos = 0; |
9ec6d7ab | 3226 | if_convert (1); |
7b40bc6b | 3227 | no_new_pseudos = 1; |
9ec6d7ab RH |
3228 | |
3229 | close_dump_file (DFI_ce, print_rtl_with_bb, insns); | |
3230 | timevar_pop (TV_IFCVT); | |
3231 | } | |
3232 | ||
8c660648 JL |
3233 | /* Register allocation pre-pass, to reduce number of moves |
3234 | necessary for two-address machines. */ | |
1230327b | 3235 | if (optimize > 0 && (flag_regmove || flag_expensive_optimizations)) |
032713aa | 3236 | { |
2a9a326b | 3237 | timevar_push (TV_REGMOVE); |
61098249 | 3238 | open_dump_file (DFI_regmove, decl); |
735a0e33 | 3239 | |
2a9a326b | 3240 | regmove_optimize (insns, max_reg_num (), rtl_dump_file); |
735a0e33 | 3241 | |
61098249 | 3242 | close_dump_file (DFI_regmove, print_rtl_with_bb, insns); |
2a9a326b | 3243 | timevar_pop (TV_REGMOVE); |
a3770a81 RH |
3244 | |
3245 | if (ggc_p) | |
3246 | ggc_collect (); | |
032713aa | 3247 | } |
8c660648 | 3248 | |
7b40bc6b RH |
3249 | /* Any of the several passes since flow1 will have munged register |
3250 | lifetime data a bit. */ | |
3251 | if (optimize > 0) | |
3252 | register_life_up_to_date = 0; | |
3253 | ||
97d36f45 RH |
3254 | #ifdef OPTIMIZE_MODE_SWITCHING |
3255 | if (optimize) | |
9f09b1f2 | 3256 | { |
2a9a326b | 3257 | timevar_push (TV_GCSE); |
97d36f45 RH |
3258 | |
3259 | if (optimize_mode_switching (NULL_PTR)) | |
3260 | { | |
3261 | /* We did work, and so had to regenerate global life information. | |
3262 | Take advantage of this and don't re-recompute register life | |
3263 | information below. */ | |
7b40bc6b | 3264 | register_life_up_to_date = 1; |
97d36f45 RH |
3265 | } |
3266 | ||
2a9a326b | 3267 | timevar_pop (TV_GCSE); |
9f09b1f2 | 3268 | } |
97d36f45 | 3269 | #endif |
9f09b1f2 | 3270 | |
375e2d5c | 3271 | #ifdef INSN_SCHEDULING |
97726216 RK |
3272 | |
3273 | /* Print function header into sched dump now | |
3274 | because doing the sched analysis makes some of the dump. */ | |
4291d9c8 RS |
3275 | if (optimize > 0 && flag_schedule_insns) |
3276 | { | |
2a9a326b | 3277 | timevar_push (TV_SCHED); |
61098249 | 3278 | open_dump_file (DFI_sched, decl); |
735a0e33 | 3279 | |
4291d9c8 RS |
3280 | /* Do control and data sched analysis, |
3281 | and write some of the results to dump file. */ | |
3282 | ||
2a9a326b | 3283 | schedule_insns (rtl_dump_file); |
735a0e33 | 3284 | |
61098249 | 3285 | close_dump_file (DFI_sched, print_rtl_with_bb, insns); |
2a9a326b | 3286 | timevar_pop (TV_SCHED); |
a3770a81 RH |
3287 | |
3288 | if (ggc_p) | |
3289 | ggc_collect (); | |
9ec6d7ab | 3290 | |
7b40bc6b RH |
3291 | /* Register lifetime information was updated as part of verifying |
3292 | the schedule. */ | |
3293 | register_life_up_to_date = 1; | |
4291d9c8 | 3294 | } |
375e2d5c | 3295 | #endif |
4291d9c8 | 3296 | |
54ff41b7 JW |
3297 | /* Determine if the current function is a leaf before running reload |
3298 | since this can impact optimizations done by the prologue and | |
3299 | epilogue thus changing register elimination offsets. */ | |
3300 | current_function_is_leaf = leaf_function_p (); | |
3301 | ||
2a9a326b | 3302 | timevar_push (TV_LOCAL_ALLOC); |
61098249 | 3303 | open_dump_file (DFI_lreg, decl); |
246fd41f | 3304 | |
d29c259b | 3305 | /* Allocate pseudo-regs that are used only within 1 basic block. |
3f1b9b1b JL |
3306 | |
3307 | RUN_JUMP_AFTER_RELOAD records whether or not we need to rerun the | |
3308 | jump optimizer after register allocation and reloading are finished. */ | |
4291d9c8 | 3309 | |
7b40bc6b RH |
3310 | if (! register_life_up_to_date) |
3311 | recompute_reg_usage (insns, ! optimize_size); | |
2a9a326b AS |
3312 | regclass (insns, max_reg_num (), rtl_dump_file); |
3313 | rebuild_label_notes_after_reload = local_alloc (); | |
3314 | ||
3315 | timevar_pop (TV_LOCAL_ALLOC); | |
4291d9c8 | 3316 | |
61098249 | 3317 | if (dump_file[DFI_lreg].enabled) |
032713aa | 3318 | { |
2a9a326b AS |
3319 | timevar_push (TV_DUMP); |
3320 | ||
3321 | dump_flow_info (rtl_dump_file); | |
3322 | dump_local_alloc (rtl_dump_file); | |
735a0e33 | 3323 | |
61098249 | 3324 | close_dump_file (DFI_lreg, print_rtl_with_bb, insns); |
2a9a326b | 3325 | timevar_pop (TV_DUMP); |
032713aa | 3326 | } |
4291d9c8 | 3327 | |
a3770a81 RH |
3328 | if (ggc_p) |
3329 | ggc_collect (); | |
3330 | ||
2a9a326b | 3331 | timevar_push (TV_GLOBAL_ALLOC); |
61098249 | 3332 | open_dump_file (DFI_greg, decl); |
4291d9c8 | 3333 | |
d29c259b RH |
3334 | /* If optimizing, allocate remaining pseudo-regs. Do the reload |
3335 | pass fixing up any insns that are invalid. */ | |
4291d9c8 | 3336 | |
2a9a326b AS |
3337 | if (optimize) |
3338 | failure = global_alloc (rtl_dump_file); | |
3339 | else | |
3340 | { | |
3341 | build_insn_chain (insns); | |
3342 | failure = reload (insns, 0, rtl_dump_file); | |
3343 | } | |
3344 | ||
3345 | timevar_pop (TV_GLOBAL_ALLOC); | |
4291d9c8 | 3346 | |
ab40ad2b RS |
3347 | if (failure) |
3348 | goto exit_rest_of_compilation; | |
3349 | ||
a3770a81 RH |
3350 | if (ggc_p) |
3351 | ggc_collect (); | |
3352 | ||
c8ed219d RK |
3353 | /* Do a very simple CSE pass over just the hard registers. */ |
3354 | if (optimize > 0) | |
2a9a326b AS |
3355 | { |
3356 | timevar_push (TV_RELOAD_CSE_REGS); | |
3357 | reload_cse_regs (insns); | |
3358 | timevar_pop (TV_RELOAD_CSE_REGS); | |
3359 | } | |
c8ed219d | 3360 | |
a18820c6 RH |
3361 | /* If optimizing, then go ahead and split insns now since we are about |
3362 | to recompute flow information anyway. */ | |
3363 | if (optimize > 0) | |
d3a923ee | 3364 | split_all_insns (0); |
45c85c4e | 3365 | |
0edaaa41 HB |
3366 | /* Register allocation and reloading may have turned an indirect jump into |
3367 | a direct jump. If so, we must rebuild the JUMP_LABEL fields of | |
3368 | jumping instructions. */ | |
3369 | if (rebuild_label_notes_after_reload) | |
2a9a326b AS |
3370 | { |
3371 | timevar_push (TV_JUMP); | |
3372 | ||
3373 | rebuild_jump_labels (insns); | |
3374 | ||
3375 | timevar_pop (TV_JUMP); | |
3376 | } | |
0edaaa41 | 3377 | |
61098249 | 3378 | if (dump_file[DFI_greg].enabled) |
e881bb1b | 3379 | { |
2a9a326b AS |
3380 | timevar_push (TV_DUMP); |
3381 | ||
3382 | dump_global_regs (rtl_dump_file); | |
3383 | ||
61098249 | 3384 | close_dump_file (DFI_greg, print_rtl_with_bb, insns); |
2a9a326b | 3385 | timevar_pop (TV_DUMP); |
e881bb1b RH |
3386 | } |
3387 | ||
6764d250 | 3388 | /* Re-create the death notes which were deleted during reload. */ |
2a9a326b | 3389 | timevar_push (TV_FLOW2); |
61098249 | 3390 | open_dump_file (DFI_flow2, decl); |
2a9a326b | 3391 | |
d2f7de58 RH |
3392 | jump_optimize (insns, !JUMP_CROSS_JUMP, |
3393 | !JUMP_NOOP_MOVES, !JUMP_AFTER_REGSCAN); | |
2a9a326b | 3394 | find_basic_blocks (insns, max_reg_num (), rtl_dump_file); |
19d3c25c RH |
3395 | |
3396 | /* On some machines, the prologue and epilogue code, or parts thereof, | |
3397 | can be represented as RTL. Doing so lets us schedule insns between | |
3398 | it and the rest of the code and also allows delayed branch | |
3399 | scheduling to operate in the epilogue. */ | |
3400 | thread_prologue_and_epilogue_insns (insns); | |
3401 | ||
6764d250 | 3402 | if (optimize) |
e881bb1b | 3403 | { |
2a9a326b AS |
3404 | cleanup_cfg (insns); |
3405 | life_analysis (insns, rtl_dump_file, PROP_FINAL); | |
1e7f0a48 | 3406 | |
5fa41e13 | 3407 | /* This is kind of a heuristic. We need to run combine_stack_adjustments |
f73ad30e JH |
3408 | even for machines with possibly nonzero RETURN_POPS_ARGS |
3409 | and ACCUMULATE_OUTGOING_ARGS. We expect that only ports having | |
3410 | push instructions will have popping returns. */ | |
3411 | #ifndef PUSH_ROUNDING | |
3412 | if (!ACCUMULATE_OUTGOING_ARGS) | |
1e7f0a48 | 3413 | #endif |
2a9a326b | 3414 | combine_stack_adjustments (); |
1e7f0a48 | 3415 | |
a3770a81 RH |
3416 | if (ggc_p) |
3417 | ggc_collect (); | |
e881bb1b | 3418 | } |
6764d250 | 3419 | |
56744d1a JL |
3420 | flow2_completed = 1; |
3421 | ||
61098249 | 3422 | close_dump_file (DFI_flow2, print_rtl_with_bb, insns); |
2a9a326b | 3423 | timevar_pop (TV_FLOW2); |
e881bb1b | 3424 | |
9ec6d7ab RH |
3425 | if (optimize > 0) |
3426 | { | |
3427 | timevar_push (TV_IFCVT2); | |
3428 | open_dump_file (DFI_ce2, decl); | |
3429 | ||
3430 | if_convert (1); | |
3431 | ||
3432 | close_dump_file (DFI_ce2, print_rtl_with_bb, insns); | |
3433 | timevar_pop (TV_IFCVT2); | |
3434 | } | |
3435 | ||
ede7cd44 RH |
3436 | #ifdef HAVE_peephole2 |
3437 | if (optimize > 0 && flag_peephole2) | |
3438 | { | |
2a9a326b | 3439 | timevar_push (TV_PEEPHOLE2); |
2a9a326b | 3440 | open_dump_file (DFI_peephole2, decl); |
9ec6d7ab | 3441 | |
2a9a326b | 3442 | peephole2_optimize (rtl_dump_file); |
ede7cd44 | 3443 | |
61098249 | 3444 | close_dump_file (DFI_peephole2, print_rtl_with_bb, insns); |
2a9a326b | 3445 | timevar_pop (TV_PEEPHOLE2); |
ede7cd44 RH |
3446 | } |
3447 | #endif | |
3448 | ||
5fa41e13 SC |
3449 | if (optimize > 0 && flag_rename_registers) |
3450 | { | |
3451 | timevar_push (TV_RENAME_REGISTERS); | |
3452 | open_dump_file (DFI_rnreg, decl); | |
3453 | ||
3454 | regrename_optimize (); | |
3455 | ||
3456 | close_dump_file (DFI_rnreg, print_rtl_with_bb, insns); | |
3457 | timevar_pop (TV_RENAME_REGISTERS); | |
3458 | } | |
3459 | ||
375e2d5c | 3460 | #ifdef INSN_SCHEDULING |
4291d9c8 RS |
3461 | if (optimize > 0 && flag_schedule_insns_after_reload) |
3462 | { | |
2a9a326b | 3463 | timevar_push (TV_SCHED2); |
61098249 | 3464 | open_dump_file (DFI_sched2, decl); |
4291d9c8 RS |
3465 | |
3466 | /* Do control and data sched analysis again, | |
3467 | and write some more of the results to dump file. */ | |
3468 | ||
2a9a326b | 3469 | schedule_insns (rtl_dump_file); |
4291d9c8 | 3470 | |
61098249 | 3471 | close_dump_file (DFI_sched2, print_rtl_with_bb, insns); |
2a9a326b | 3472 | timevar_pop (TV_SCHED2); |
a3770a81 RH |
3473 | |
3474 | if (ggc_p) | |
3475 | ggc_collect (); | |
4291d9c8 | 3476 | } |
375e2d5c | 3477 | #endif |
4291d9c8 RS |
3478 | |
3479 | #ifdef LEAF_REGISTERS | |
5ad9b85f JW |
3480 | current_function_uses_only_leaf_regs |
3481 | = optimize > 0 && only_leaf_regs_used () && leaf_function_p (); | |
4291d9c8 RS |
3482 | #endif |
3483 | ||
11bdd2ae SC |
3484 | if (optimize > 0 && flag_reorder_blocks) |
3485 | { | |
2a9a326b | 3486 | timevar_push (TV_REORDER_BLOCKS); |
61098249 | 3487 | open_dump_file (DFI_bbro, decl); |
11bdd2ae | 3488 | |
2a9a326b | 3489 | reorder_basic_blocks (); |
11bdd2ae | 3490 | |
61098249 | 3491 | close_dump_file (DFI_bbro, print_rtl_with_bb, insns); |
2a9a326b | 3492 | timevar_pop (TV_REORDER_BLOCKS); |
11bdd2ae SC |
3493 | } |
3494 | ||
d29c259b RH |
3495 | /* One more attempt to remove jumps to .+1 left by dead-store elimination. |
3496 | Also do cross-jumping this time and delete no-op move insns. */ | |
4291d9c8 RS |
3497 | |
3498 | if (optimize > 0) | |
3499 | { | |
2a9a326b | 3500 | timevar_push (TV_JUMP); |
61098249 RH |
3501 | open_dump_file (DFI_jump2, decl); |
3502 | ||
2a9a326b AS |
3503 | jump_optimize (insns, JUMP_CROSS_JUMP, JUMP_NOOP_MOVES, |
3504 | !JUMP_AFTER_REGSCAN); | |
735a0e33 | 3505 | |
9ec6d7ab RH |
3506 | /* CFG no longer kept up to date. */ |
3507 | ||
61098249 | 3508 | close_dump_file (DFI_jump2, print_rtl_with_bb, insns); |
2a9a326b | 3509 | timevar_pop (TV_JUMP); |
032713aa | 3510 | } |
4291d9c8 | 3511 | |
2c65021a RK |
3512 | /* If a machine dependent reorganization is needed, call it. */ |
3513 | #ifdef MACHINE_DEPENDENT_REORG | |
61098249 | 3514 | open_dump_file (DFI_mach, decl); |
88924698 | 3515 | |
61098249 | 3516 | MACHINE_DEPENDENT_REORG (insns); |
032713aa | 3517 | |
61098249 | 3518 | close_dump_file (DFI_mach, print_rtl_with_bb, insns); |
a3770a81 | 3519 | |
61098249 RH |
3520 | if (ggc_p) |
3521 | ggc_collect (); | |
2c65021a RK |
3522 | #endif |
3523 | ||
4291d9c8 | 3524 | /* If a scheduling pass for delayed branches is to be done, |
0f41302f | 3525 | call the scheduling code. */ |
4291d9c8 RS |
3526 | |
3527 | #ifdef DELAY_SLOTS | |
3528 | if (optimize > 0 && flag_delayed_branch) | |
3529 | { | |
2a9a326b | 3530 | timevar_push (TV_DBR_SCHED); |
61098249 | 3531 | open_dump_file (DFI_dbr, decl); |
bbd2180d | 3532 | |
2a9a326b | 3533 | dbr_schedule (insns, rtl_dump_file); |
735a0e33 | 3534 | |
61098249 | 3535 | close_dump_file (DFI_dbr, print_rtl_with_bb, insns); |
2a9a326b | 3536 | timevar_pop (TV_DBR_SCHED); |
a3770a81 | 3537 | |
61098249 RH |
3538 | if (ggc_p) |
3539 | ggc_collect (); | |
3540 | } | |
4291d9c8 RS |
3541 | #endif |
3542 | ||
67e1e279 JL |
3543 | /* Shorten branches. |
3544 | ||
3545 | Note this must run before reg-stack because of death note (ab)use | |
3546 | in the ia32 backend. */ | |
2a9a326b AS |
3547 | timevar_push (TV_SHORTEN_BRANCH); |
3548 | shorten_branches (get_insns ()); | |
3549 | timevar_pop (TV_SHORTEN_BRANCH); | |
67e1e279 | 3550 | |
4291d9c8 | 3551 | #ifdef STACK_REGS |
2a9a326b | 3552 | timevar_push (TV_REG_STACK); |
61098249 | 3553 | open_dump_file (DFI_stack, decl); |
25ba7583 | 3554 | |
2a9a326b | 3555 | reg_to_stack (insns, rtl_dump_file); |
032713aa | 3556 | |
61098249 | 3557 | close_dump_file (DFI_stack, print_rtl_with_bb, insns); |
2a9a326b | 3558 | timevar_pop (TV_REG_STACK); |
a3770a81 | 3559 | |
fb13d4d0 JM |
3560 | if (ggc_p) |
3561 | ggc_collect (); | |
4291d9c8 RS |
3562 | #endif |
3563 | ||
fb13d4d0 | 3564 | current_function_nothrow = nothrow_function_p (); |
12a22e76 JM |
3565 | if (current_function_nothrow) |
3566 | /* Now we know that this can't throw; set the flag for the benefit | |
3567 | of other functions later in this translation unit. */ | |
3568 | TREE_NOTHROW (current_function_decl) = 1; | |
fb13d4d0 | 3569 | |
4291d9c8 RS |
3570 | /* Now turn the rtl into assembler code. */ |
3571 | ||
2a9a326b AS |
3572 | timevar_push (TV_FINAL); |
3573 | { | |
3574 | rtx x; | |
3575 | const char *fnname; | |
4291d9c8 | 3576 | |
d171a5fb RK |
3577 | /* Get the function's name, as described by its RTL. This may be |
3578 | different from the DECL_NAME name used in the source file. */ | |
4291d9c8 | 3579 | |
2a9a326b AS |
3580 | x = DECL_RTL (decl); |
3581 | if (GET_CODE (x) != MEM) | |
3582 | abort (); | |
3583 | x = XEXP (x, 0); | |
3584 | if (GET_CODE (x) != SYMBOL_REF) | |
3585 | abort (); | |
3586 | fnname = XSTR (x, 0); | |
3587 | ||
3588 | assemble_start_function (decl, fnname); | |
3589 | final_start_function (insns, asm_out_file, optimize); | |
3590 | final (insns, asm_out_file, optimize, 0); | |
3591 | final_end_function (insns, asm_out_file, optimize); | |
3592 | assemble_end_function (decl, fnname); | |
3593 | if (! quiet_flag) | |
3594 | fflush (asm_out_file); | |
9ddca353 | 3595 | |
e881bb1b | 3596 | /* Release all memory allocated by flow. */ |
2a9a326b | 3597 | free_basic_block_vars (0); |
e881bb1b | 3598 | |
2a9a326b AS |
3599 | /* Release all memory held by regsets now */ |
3600 | regset_release_memory (); | |
3601 | } | |
3602 | timevar_pop (TV_FINAL); | |
4291d9c8 | 3603 | |
18c038b9 MM |
3604 | if (ggc_p) |
3605 | ggc_collect (); | |
a3770a81 | 3606 | |
4291d9c8 RS |
3607 | /* Write DBX symbols if requested */ |
3608 | ||
3609 | /* Note that for those inline functions where we don't initially | |
3610 | know for certain that we will be generating an out-of-line copy, | |
3611 | the first invocation of this routine (rest_of_compilation) will | |
3612 | skip over this code by doing a `goto exit_rest_of_compilation;'. | |
3613 | Later on, finish_compilation will call rest_of_compilation again | |
3614 | for those inline functions that need to have out-of-line copies | |
3615 | generated. During that call, we *will* be routed past here. */ | |
3616 | ||
2a9a326b | 3617 | timevar_push (TV_SYMOUT); |
4291d9c8 RS |
3618 | #ifdef DBX_DEBUGGING_INFO |
3619 | if (write_symbols == DBX_DEBUG) | |
2a9a326b | 3620 | dbxout_function (decl); |
4291d9c8 RS |
3621 | #endif |
3622 | ||
3623 | #ifdef DWARF_DEBUGGING_INFO | |
3624 | if (write_symbols == DWARF_DEBUG) | |
2a9a326b | 3625 | dwarfout_file_scope_decl (decl, 0); |
4291d9c8 RS |
3626 | #endif |
3627 | ||
9a666dda JM |
3628 | #ifdef DWARF2_DEBUGGING_INFO |
3629 | if (write_symbols == DWARF2_DEBUG) | |
2a9a326b | 3630 | dwarf2out_decl (decl); |
9a666dda | 3631 | #endif |
2a9a326b | 3632 | timevar_pop (TV_SYMOUT); |
9a666dda | 3633 | |
4291d9c8 RS |
3634 | exit_rest_of_compilation: |
3635 | ||
f246a305 RS |
3636 | /* In case the function was not output, |
3637 | don't leave any temporary anonymous types | |
3638 | queued up for sdb output. */ | |
3639 | #ifdef SDB_DEBUGGING_INFO | |
3640 | if (write_symbols == SDB_DEBUG) | |
37366632 | 3641 | sdbout_types (NULL_TREE); |
f246a305 RS |
3642 | #endif |
3643 | ||
4291d9c8 | 3644 | reload_completed = 0; |
56744d1a | 3645 | flow2_completed = 0; |
f1db3576 | 3646 | no_new_pseudos = 0; |
4291d9c8 | 3647 | |
2a9a326b | 3648 | timevar_push (TV_FINAL); |
4291d9c8 | 3649 | |
2a9a326b AS |
3650 | /* Clear out the insn_length contents now that they are no |
3651 | longer valid. */ | |
3652 | init_insn_lengths (); | |
3653 | ||
3654 | /* Clear out the real_constant_chain before some of the rtx's | |
32e705c4 | 3655 | it runs through become garbage. */ |
2a9a326b AS |
3656 | clear_const_double_mem (); |
3657 | ||
3658 | /* Cancel the effect of rtl_in_current_obstack. */ | |
3659 | resume_temporary_allocation (); | |
4291d9c8 | 3660 | |
2a9a326b AS |
3661 | /* Show no temporary slots allocated. */ |
3662 | init_temp_slots (); | |
adcd38c9 | 3663 | |
2a9a326b | 3664 | free_basic_block_vars (0); |
fa51b01b | 3665 | |
2a9a326b | 3666 | timevar_pop (TV_FINAL); |
adcd38c9 | 3667 | |
c8d86b9a JW |
3668 | /* Make sure volatile mem refs aren't considered valid operands for |
3669 | arithmetic insns. We must call this here if this is a nested inline | |
3670 | function, since the above code leaves us in the init_recog state | |
3671 | (from final.c), and the function context push/pop code does not | |
3672 | save/restore volatile_ok. | |
3673 | ||
3674 | ??? Maybe it isn't necessary for expand_start_function to call this | |
3675 | anymore if we do it here? */ | |
3676 | ||
3677 | init_recog_no_volatile (); | |
3678 | ||
21cd906e | 3679 | /* We're done with this function. Free up memory if we can. */ |
01d939e8 | 3680 | free_after_parsing (cfun); |
fa51b01b | 3681 | if (! DECL_DEFER_OUTPUT (decl)) |
01d939e8 BS |
3682 | free_after_compilation (cfun); |
3683 | cfun = 0; | |
a3770a81 | 3684 | |
21cd906e MM |
3685 | if (ggc_p) |
3686 | ggc_collect (); | |
a3770a81 | 3687 | |
2a9a326b | 3688 | timevar_pop (TV_REST_OF_COMPILATION); |
4291d9c8 RS |
3689 | } |
3690 | \f | |
b8468bc7 NC |
3691 | static void |
3692 | display_help () | |
3693 | { | |
3694 | int undoc; | |
114791ea | 3695 | unsigned long i; |
87e11268 | 3696 | const char * lang; |
b8468bc7 | 3697 | |
40f943dd | 3698 | #ifndef USE_CPPLIB |
b8468bc7 NC |
3699 | printf ("Usage: %s input [switches]\n", progname); |
3700 | printf ("Switches:\n"); | |
40f943dd | 3701 | #endif |
b8468bc7 NC |
3702 | printf (" -ffixed-<register> Mark <register> as being unavailable to the compiler\n"); |
3703 | printf (" -fcall-used-<register> Mark <register> as being corrupted by function calls\n"); | |
3704 | printf (" -fcall-saved-<register> Mark <register> as being preserved across functions\n"); | |
efa3896a | 3705 | printf (" -finline-limit=<number> Limits the size of inlined functions to <number>\n"); |
b8468bc7 NC |
3706 | |
3707 | for (i = NUM_ELEM (f_options); i--;) | |
3708 | { | |
87e11268 | 3709 | const char * description = f_options[i].description; |
b8468bc7 NC |
3710 | |
3711 | if (description != NULL && * description != 0) | |
3712 | printf (" -f%-21s %s\n", | |
3713 | f_options[i].string, description); | |
3714 | } | |
3715 | ||
3716 | printf (" -O[number] Set optimisation level to [number]\n"); | |
3717 | printf (" -Os Optimise for space rather than speed\n"); | |
3718 | printf (" -pedantic Issue warnings needed by strict compliance to ANSI C\n"); | |
3719 | printf (" -pedantic-errors Like -pedantic except that errors are produced\n"); | |
3720 | printf (" -w Suppress warnings\n"); | |
3721 | printf (" -W Enable extra warnings\n"); | |
3722 | ||
3723 | for (i = NUM_ELEM (W_options); i--;) | |
3724 | { | |
87e11268 | 3725 | const char * description = W_options[i].description; |
b8468bc7 NC |
3726 | |
3727 | if (description != NULL && * description != 0) | |
3728 | printf (" -W%-21s %s\n", | |
3729 | W_options[i].string, description); | |
3730 | } | |
3731 | ||
078721e1 | 3732 | printf (" -Wunused Enable unused warnings\n"); |
b8468bc7 NC |
3733 | printf (" -Wid-clash-<num> Warn if 2 identifiers have the same first <num> chars\n"); |
3734 | printf (" -Wlarger-than-<number> Warn if an object is larger than <number> bytes\n"); | |
3735 | printf (" -p Enable function profiling\n"); | |
3736 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) | |
3737 | printf (" -a Enable block profiling \n"); | |
3738 | #endif | |
3739 | #if defined (BLOCK_PROFILER) || defined (FUNCTION_BLOCK_PROFILER) || defined FUNCTION_BLOCK_PROFILER_EXIT | |
3740 | printf (" -ax Enable jump profiling \n"); | |
3741 | #endif | |
3742 | printf (" -o <file> Place output into <file> \n"); | |
3743 | printf (" -G <number> Put global and static data smaller than <number>\n"); | |
40f943dd | 3744 | printf (" bytes into a special section (on some targets)\n"); |
b8468bc7 NC |
3745 | |
3746 | for (i = NUM_ELEM (debug_args); i--;) | |
3747 | { | |
3748 | if (debug_args[i].description != NULL) | |
39dd8003 | 3749 | printf (" -g%-21s %s\n", debug_args[i].arg, debug_args[i].description); |
b8468bc7 NC |
3750 | } |
3751 | ||
3752 | printf (" -aux-info <file> Emit declaration info into <file>.X\n"); | |
3753 | printf (" -quiet Do not display functions compiled or elapsed time\n"); | |
3754 | printf (" -version Display the compiler's version\n"); | |
3755 | printf (" -d[letters] Enable dumps from specific passes of the compiler\n"); | |
3756 | printf (" -dumpbase <file> Base name to be used for dumps from specific passes\n"); | |
7b5efe21 | 3757 | #if defined INSN_SCHEDULING |
409f8483 | 3758 | printf (" -fsched-verbose=<number> Set the verbosity level of the scheduler\n"); |
b8468bc7 NC |
3759 | #endif |
3760 | printf (" --help Display this information\n"); | |
3761 | ||
3762 | undoc = 0; | |
3763 | lang = "language"; | |
3764 | ||
3765 | /* Display descriptions of language specific options. | |
3766 | If there is no description, note that there is an undocumented option. | |
3767 | If the description is empty, do not display anything. (This allows | |
3768 | options to be deliberately undocumented, for whatever reason). | |
3769 | If the option string is missing, then this is a marker, indicating | |
630962bf | 3770 | that the description string is in fact the name of a language, whose |
b8468bc7 NC |
3771 | language specific options are to follow. */ |
3772 | ||
3773 | if (NUM_ELEM (documented_lang_options) > 1) | |
3774 | { | |
b8468bc7 NC |
3775 | printf ("\nLanguage specific options:\n"); |
3776 | ||
3777 | for (i = 0; i < NUM_ELEM (documented_lang_options); i++) | |
3778 | { | |
87e11268 KG |
3779 | const char * description = documented_lang_options[i].description; |
3780 | const char * option = documented_lang_options[i].option; | |
b8468bc7 NC |
3781 | |
3782 | if (description == NULL) | |
844642e6 NC |
3783 | { |
3784 | undoc = 1; | |
3785 | ||
3786 | if (extra_warnings) | |
3787 | printf (" %-23.23s [undocumented]\n", option); | |
3788 | } | |
b8468bc7 NC |
3789 | else if (* description == 0) |
3790 | continue; | |
3791 | else if (option == NULL) | |
3792 | { | |
3793 | if (undoc) | |
3794 | printf | |
3795 | ("\nThere are undocumented %s specific options as well.\n", | |
3796 | lang); | |
3797 | undoc = 0; | |
3798 | ||
3799 | printf ("\n Options for %s:\n", description); | |
3800 | ||
3801 | lang = description; | |
3802 | } | |
3803 | else | |
3804 | printf (" %-23.23s %s\n", option, description); | |
3805 | } | |
3806 | } | |
3807 | ||
3808 | if (undoc) | |
3809 | printf ("\nThere are undocumented %s specific options as well.\n", lang); | |
3810 | ||
3811 | if (NUM_ELEM (target_switches) > 1 | |
3812 | #ifdef TARGET_OPTIONS | |
3813 | || NUM_ELEM (target_options) > 1 | |
3814 | #endif | |
3815 | ) | |
3816 | { | |
3817 | int doc = 0; | |
3818 | ||
3819 | undoc = 0; | |
3820 | ||
3821 | printf ("\nTarget specific options:\n"); | |
3822 | ||
3823 | for (i = NUM_ELEM (target_switches); i--;) | |
3824 | { | |
87e11268 KG |
3825 | const char * option = target_switches[i].name; |
3826 | const char * description = target_switches[i].description; | |
b8468bc7 | 3827 | |
844642e6 | 3828 | if (option == NULL || * option == 0) |
b8468bc7 NC |
3829 | continue; |
3830 | else if (description == NULL) | |
844642e6 NC |
3831 | { |
3832 | undoc = 1; | |
3833 | ||
3834 | if (extra_warnings) | |
3835 | printf (" -m%-21.21s [undocumented]\n", option); | |
3836 | } | |
b8468bc7 | 3837 | else if (* description != 0) |
1f50b029 | 3838 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
3839 | } |
3840 | ||
3841 | #ifdef TARGET_OPTIONS | |
3842 | for (i = NUM_ELEM (target_options); i--;) | |
3843 | { | |
87e11268 KG |
3844 | const char * option = target_options[i].prefix; |
3845 | const char * description = target_options[i].description; | |
b8468bc7 | 3846 | |
844642e6 | 3847 | if (option == NULL || * option == 0) |
b8468bc7 NC |
3848 | continue; |
3849 | else if (description == NULL) | |
844642e6 NC |
3850 | { |
3851 | undoc = 1; | |
3852 | ||
3853 | if (extra_warnings) | |
3854 | printf (" -m%-21.21s [undocumented]\n", option); | |
3855 | } | |
b8468bc7 | 3856 | else if (* description != 0) |
1f50b029 | 3857 | doc += printf (" -m%-21.21s %s\n", option, description); |
b8468bc7 NC |
3858 | } |
3859 | #endif | |
3860 | if (undoc) | |
ff59bfe6 JM |
3861 | { |
3862 | if (doc) | |
3863 | printf ("\nThere are undocumented target specific options as well.\n"); | |
3864 | else | |
3865 | printf (" They exist, but they are not documented.\n"); | |
3866 | } | |
b8468bc7 NC |
3867 | } |
3868 | } | |
39dd8003 NC |
3869 | \f |
3870 | /* Parse a -d... comand line switch. */ | |
3871 | ||
3872 | static void | |
3873 | decode_d_option (arg) | |
3874 | const char * arg; | |
3875 | { | |
61098249 RH |
3876 | int i, c, matched; |
3877 | ||
3878 | while (*arg) | |
3879 | switch (c = *arg++) | |
39dd8003 NC |
3880 | { |
3881 | case 'a': | |
61098249 RH |
3882 | for (i = 0; i < DFI_MAX; ++i) |
3883 | dump_file[i].enabled = 1; | |
39dd8003 NC |
3884 | break; |
3885 | case 'A': | |
3886 | flag_debug_asm = 1; | |
3887 | break; | |
39dd8003 NC |
3888 | case 'm': |
3889 | flag_print_mem = 1; | |
3890 | break; | |
39dd8003 NC |
3891 | case 'p': |
3892 | flag_print_asm_name = 1; | |
3893 | break; | |
39dd8003 NC |
3894 | case 'v': |
3895 | graph_dump_format = vcg; | |
3896 | break; | |
39dd8003 NC |
3897 | case 'x': |
3898 | rtl_dump_and_exit = 1; | |
3899 | break; | |
3900 | case 'y': | |
3901 | set_yydebug (1); | |
3902 | break; | |
39dd8003 NC |
3903 | case 'D': /* These are handled by the preprocessor. */ |
3904 | case 'I': | |
3905 | break; | |
61098249 | 3906 | |
39dd8003 | 3907 | default: |
61098249 RH |
3908 | matched = 0; |
3909 | for (i = 0; i < DFI_MAX; ++i) | |
3910 | if (c == dump_file[i].debug_switch) | |
3911 | { | |
3912 | dump_file[i].enabled = 1; | |
3913 | matched = 1; | |
3914 | } | |
3915 | ||
3916 | if (! matched) | |
3917 | warning ("unrecognized gcc debugging option: %c", c); | |
39dd8003 NC |
3918 | break; |
3919 | } | |
3920 | } | |
b8468bc7 | 3921 | |
39dd8003 NC |
3922 | /* Parse a -f... comand line switch. ARG is the value after the -f. |
3923 | It is safe to access 'ARG - 2' to generate the full switch name. | |
3924 | Return the number of strings consumed. */ | |
b8468bc7 NC |
3925 | |
3926 | static int | |
39dd8003 NC |
3927 | decode_f_option (arg) |
3928 | const char * arg; | |
b8468bc7 | 3929 | { |
39dd8003 | 3930 | int j; |
6f5ef761 | 3931 | const char *option_value = NULL; |
39dd8003 NC |
3932 | |
3933 | /* Search for the option in the table of binary f options. */ | |
3934 | for (j = sizeof (f_options) / sizeof (f_options[0]); j--;) | |
3935 | { | |
3936 | if (!strcmp (arg, f_options[j].string)) | |
3937 | { | |
3938 | *f_options[j].variable = f_options[j].on_value; | |
3939 | return 1; | |
3940 | } | |
3941 | ||
3942 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
3943 | && ! strcmp (arg + 3, f_options[j].string)) | |
3944 | { | |
3945 | *f_options[j].variable = ! f_options[j].on_value; | |
3946 | return 1; | |
3947 | } | |
3948 | } | |
b8468bc7 | 3949 | |
6f5ef761 GDR |
3950 | if ((option_value = skip_leading_substring (arg, "inline-limit-")) |
3951 | || (option_value = skip_leading_substring (arg, "inline-limit="))) | |
39dd8003 | 3952 | inline_max_insns = |
6f5ef761 | 3953 | read_integral_parameter (option_value, arg - 2, inline_max_insns); |
39dd8003 | 3954 | #ifdef INSN_SCHEDULING |
6f5ef761 GDR |
3955 | else if ((option_value = skip_leading_substring (arg, "sched-verbose="))) |
3956 | fix_sched_param ("verbose", option_value); | |
3957 | #endif | |
3958 | else if ((option_value = skip_leading_substring (arg, "fixed-"))) | |
3959 | fix_register (option_value, 1, 1); | |
3960 | else if ((option_value = skip_leading_substring (arg, "call-used-"))) | |
3961 | fix_register (option_value, 0, 1); | |
3962 | else if ((option_value = skip_leading_substring (arg, "call-saved-"))) | |
3963 | fix_register (option_value, 0, 0); | |
3964 | else if ((option_value = skip_leading_substring (arg, "align-loops="))) | |
3965 | align_loops = read_integral_parameter (option_value, arg - 2, align_loops); | |
3966 | else if ((option_value = skip_leading_substring (arg, "align-functions="))) | |
4559fd9e | 3967 | align_functions |
6f5ef761 GDR |
3968 | = read_integral_parameter (option_value, arg - 2, align_functions); |
3969 | else if ((option_value = skip_leading_substring (arg, "align-jumps="))) | |
3970 | align_jumps = read_integral_parameter (option_value, arg - 2, align_jumps); | |
3971 | else if ((option_value = skip_leading_substring (arg, "align-labels="))) | |
3972 | align_labels | |
3973 | = read_integral_parameter (option_value, arg - 2, align_labels); | |
3974 | else if ((option_value | |
3975 | = skip_leading_substring (arg, "stack-limit-register="))) | |
3976 | { | |
3977 | int reg = decode_reg_name (option_value); | |
a157febd | 3978 | if (reg < 0) |
6f5ef761 | 3979 | error ("unrecognized register name `%s'", option_value); |
a157febd GK |
3980 | else |
3981 | stack_limit_rtx = gen_rtx_REG (Pmode, reg); | |
3982 | } | |
6f5ef761 GDR |
3983 | else if ((option_value |
3984 | = skip_leading_substring (arg, "stack-limit-symbol="))) | |
a157febd GK |
3985 | { |
3986 | char *nm; | |
3987 | if (ggc_p) | |
6f5ef761 | 3988 | nm = ggc_alloc_string (option_value, strlen (option_value)); |
a157febd | 3989 | else |
6f5ef761 | 3990 | nm = xstrdup (option_value); |
a157febd GK |
3991 | stack_limit_rtx = gen_rtx_SYMBOL_REF (Pmode, nm); |
3992 | } | |
3993 | else if (!strcmp (arg, "no-stack-limit")) | |
3994 | stack_limit_rtx = NULL_RTX; | |
39dd8003 NC |
3995 | else if (!strcmp (arg, "preprocessed")) |
3996 | /* Recognise this switch but do nothing. This prevents warnings | |
4dbba876 | 3997 | about an unrecognized switch if cpplib has not been linked in. */ |
39dd8003 | 3998 | ; |
1f50b029 | 3999 | else |
39dd8003 NC |
4000 | return 0; |
4001 | ||
4002 | return 1; | |
4003 | } | |
4004 | ||
4005 | /* Parse a -W... comand line switch. ARG is the value after the -W. | |
4006 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4007 | Return the number of strings consumed. */ | |
4559fd9e | 4008 | |
39dd8003 NC |
4009 | static int |
4010 | decode_W_option (arg) | |
4011 | const char * arg; | |
4012 | { | |
6f5ef761 | 4013 | const char *option_value = NULL; |
39dd8003 | 4014 | int j; |
1f50b029 | 4015 | |
39dd8003 NC |
4016 | /* Search for the option in the table of binary W options. */ |
4017 | ||
4018 | for (j = sizeof (W_options) / sizeof (W_options[0]); j--;) | |
4019 | { | |
4020 | if (!strcmp (arg, W_options[j].string)) | |
4021 | { | |
4022 | *W_options[j].variable = W_options[j].on_value; | |
4023 | return 1; | |
4024 | } | |
4025 | ||
4026 | if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-' | |
4027 | && ! strcmp (arg + 3, W_options[j].string)) | |
4028 | { | |
4029 | *W_options[j].variable = ! W_options[j].on_value; | |
4030 | return 1; | |
4031 | } | |
4032 | } | |
4033 | ||
6f5ef761 | 4034 | if ((option_value = skip_leading_substring (arg, "id-clash-"))) |
39dd8003 | 4035 | { |
6f5ef761 | 4036 | id_clash_len = read_integral_parameter (option_value, arg - 2, -1); |
39dd8003 | 4037 | |
4559fd9e RK |
4038 | if (id_clash_len != -1) |
4039 | warn_id_clash = 1; | |
39dd8003 | 4040 | } |
6f5ef761 | 4041 | else if ((option_value = skip_leading_substring (arg, "larger-than-"))) |
39dd8003 | 4042 | { |
6f5ef761 | 4043 | larger_than_size = read_integral_parameter (option_value, arg - 2, -1); |
4559fd9e RK |
4044 | |
4045 | if (larger_than_size != -1) | |
4046 | warn_larger_than = 1; | |
39dd8003 | 4047 | } |
078721e1 AC |
4048 | else if (!strcmp (arg, "unused")) |
4049 | { | |
4050 | set_Wunused (1); | |
4051 | } | |
4052 | else if (!strcmp (arg, "no-unused")) | |
4053 | { | |
4054 | set_Wunused (0); | |
4055 | } | |
39dd8003 | 4056 | else |
b8468bc7 | 4057 | return 0; |
39dd8003 NC |
4058 | |
4059 | return 1; | |
4060 | } | |
4061 | ||
4062 | /* Parse a -g... comand line switch. ARG is the value after the -g. | |
4063 | It is safe to access 'ARG - 2' to generate the full switch name. | |
4064 | Return the number of strings consumed. */ | |
14a774a9 | 4065 | |
39dd8003 NC |
4066 | static int |
4067 | decode_g_option (arg) | |
4068 | const char * arg; | |
4069 | { | |
4070 | unsigned level; | |
4071 | /* A lot of code assumes write_symbols == NO_DEBUG if the | |
4072 | debugging level is 0 (thus -gstabs1 -gstabs0 would lose track | |
4073 | of what debugging type has been selected). This records the | |
4074 | selected type. It is an error to specify more than one | |
4075 | debugging type. */ | |
4076 | static enum debug_info_type selected_debug_type = NO_DEBUG; | |
4077 | /* Non-zero if debugging format has been explicitly set. | |
4078 | -g and -ggdb don't explicitly set the debugging format so | |
4079 | -gdwarf -g3 is equivalent to -gdwarf3. */ | |
4080 | static int type_explicitly_set_p = 0; | |
4081 | /* Indexed by enum debug_info_type. */ | |
4082 | static const char * debug_type_names[] = | |
4083 | { | |
4084 | "none", "stabs", "coff", "dwarf-1", "dwarf-2", "xcoff" | |
4085 | }; | |
1f50b029 | 4086 | |
39dd8003 NC |
4087 | /* The maximum admissible debug level value. */ |
4088 | static const unsigned max_debug_level = 3; | |
1f50b029 | 4089 | |
39dd8003 NC |
4090 | /* Look up ARG in the table. */ |
4091 | for (da = debug_args; da->arg; da++) | |
4092 | { | |
4093 | const int da_len = strlen (da->arg); | |
4094 | ||
4095 | if (da_len == 0 || ! strncmp (arg, da->arg, da_len)) | |
4096 | { | |
4097 | enum debug_info_type type = da->debug_type; | |
4098 | const char * p = arg + da_len; | |
4099 | ||
4100 | if (*p && (*p < '0' || *p > '9')) | |
4101 | continue; | |
4102 | ||
4103 | /* A debug flag without a level defaults to level 2. | |
4104 | Note we do not want to call read_integral_parameter | |
4105 | for that case since it will call atoi which | |
4106 | will return zero. | |
4107 | ||
4108 | ??? We may want to generalize the interface to | |
4109 | read_integral_parameter to better handle this case | |
4110 | if this case shows up often. */ | |
4111 | if (*p) | |
4112 | level = read_integral_parameter (p, 0, max_debug_level + 1); | |
4113 | else | |
4114 | level = 2; | |
4115 | ||
4116 | if (da_len > 1 && *p && !strncmp (arg, "dwarf", da_len)) | |
4117 | { | |
4118 | error ("use -gdwarf -g%d for DWARF v1, level %d", | |
4119 | level, level); | |
4120 | if (level == 2) | |
4121 | error ("use -gdwarf-2 for DWARF v2"); | |
4122 | } | |
4123 | ||
4124 | if (level > max_debug_level) | |
4125 | { | |
4126 | warning ("\ | |
4127 | ignoring option `%s' due to invalid debug level specification", | |
4128 | arg - 2); | |
4129 | level = debug_info_level; | |
4130 | } | |
4131 | ||
4132 | if (type == NO_DEBUG) | |
4133 | { | |
4134 | type = PREFERRED_DEBUGGING_TYPE; | |
4135 | ||
4136 | if (da_len > 1 && strncmp (arg, "gdb", da_len) == 0) | |
4137 | { | |
4138 | #if defined (DWARF2_DEBUGGING_INFO) && !defined (LINKER_DOES_NOT_WORK_WITH_DWARF2) | |
4139 | type = DWARF2_DEBUG; | |
4140 | #else | |
4141 | #ifdef DBX_DEBUGGING_INFO | |
4142 | type = DBX_DEBUG; | |
4143 | #endif | |
4144 | #endif | |
4145 | } | |
4146 | } | |
4147 | ||
4148 | if (type == NO_DEBUG) | |
14a774a9 | 4149 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4150 | |
4151 | /* Does it conflict with an already selected type? */ | |
4152 | if (type_explicitly_set_p | |
4153 | /* -g/-ggdb don't conflict with anything */ | |
4154 | && da->debug_type != NO_DEBUG | |
4155 | && type != selected_debug_type) | |
4156 | warning ("`%s' ignored, conflicts with `-g%s'", | |
4157 | arg - 2, debug_type_names[(int) selected_debug_type]); | |
4158 | else | |
4159 | { | |
4160 | /* If the format has already been set, -g/-ggdb | |
4161 | only change the debug level. */ | |
4162 | if (type_explicitly_set_p && da->debug_type == NO_DEBUG) | |
4163 | ; /* don't change debugging type */ | |
4164 | else | |
4165 | { | |
4166 | selected_debug_type = type; | |
4167 | type_explicitly_set_p = da->debug_type != NO_DEBUG; | |
4168 | } | |
4169 | ||
4170 | write_symbols = (level == 0 | |
4171 | ? NO_DEBUG | |
4172 | : selected_debug_type); | |
4173 | use_gnu_debug_info_extensions = da->use_extensions_p; | |
4174 | debug_info_level = (enum debug_info_level) level; | |
4175 | } | |
4176 | ||
4177 | break; | |
4178 | } | |
4179 | } | |
1f50b029 | 4180 | |
39dd8003 | 4181 | if (! da->arg) |
14a774a9 | 4182 | warning ("`%s': unknown or unsupported -g option", arg - 2); |
39dd8003 NC |
4183 | |
4184 | return 1; | |
4185 | } | |
4186 | ||
4187 | /* Decode the first argument in the argv as a language-independent option. | |
4188 | Return the number of strings consumed. 'strings_processed' is the | |
4189 | number of strings that have already been decoded in a language | |
4190 | specific fashion before this function was invoked. */ | |
4191 | ||
13eb1f7f | 4192 | static unsigned int |
39dd8003 NC |
4193 | independent_decode_option (argc, argv, strings_processed) |
4194 | int argc; | |
13eb1f7f RK |
4195 | char **argv; |
4196 | unsigned int strings_processed; | |
39dd8003 | 4197 | { |
13eb1f7f | 4198 | char *arg = argv[0]; |
1f50b029 | 4199 | |
39dd8003 | 4200 | if (arg[0] != '-' || arg[1] == 0) |
b8468bc7 | 4201 | { |
39dd8003 NC |
4202 | if (arg[0] == '+') |
4203 | return 0; | |
4204 | ||
4205 | filename = arg; | |
4206 | ||
4207 | return 1; | |
b8468bc7 | 4208 | } |
39dd8003 NC |
4209 | |
4210 | arg ++; | |
1f50b029 | 4211 | |
39dd8003 NC |
4212 | if (!strcmp (arg, "-help")) |
4213 | { | |
4214 | display_help (); | |
4215 | exit (0); | |
4216 | } | |
4217 | ||
4218 | if (* arg == 'Y') | |
4219 | arg ++; | |
1f50b029 | 4220 | |
13eb1f7f | 4221 | switch (*arg) |
b8468bc7 | 4222 | { |
39dd8003 NC |
4223 | default: |
4224 | return 0; | |
4225 | ||
4226 | case 'O': | |
4227 | /* Already been treated in main (). Do nothing. */ | |
4228 | break; | |
4229 | ||
4230 | case 'm': | |
4231 | set_target_switch (arg + 1); | |
4232 | break; | |
4233 | ||
4234 | case 'f': | |
4235 | return decode_f_option (arg + 1); | |
4236 | ||
4237 | case 'g': | |
13eb1f7f RK |
4238 | if (strings_processed == 0) |
4239 | return decode_g_option (arg + 1); | |
4240 | else | |
4241 | return strings_processed; | |
39dd8003 NC |
4242 | |
4243 | case 'd': | |
4244 | if (!strcmp (arg, "dumpbase")) | |
4245 | { | |
4246 | if (argc == 1) | |
4247 | return 0; | |
4248 | ||
4249 | dump_base_name = argv[1]; | |
4250 | return 2; | |
4251 | } | |
4252 | else | |
4253 | decode_d_option (arg + 1); | |
4254 | break; | |
4255 | ||
4256 | case 'p': | |
4257 | if (!strcmp (arg, "pedantic")) | |
4258 | pedantic = 1; | |
4259 | else if (!strcmp (arg, "pedantic-errors")) | |
4260 | flag_pedantic_errors = pedantic = 1; | |
4261 | else if (arg[1] == 0) | |
4262 | profile_flag = 1; | |
4263 | else | |
4264 | return 0; | |
4265 | break; | |
4266 | ||
4267 | case 'q': | |
4268 | if (!strcmp (arg, "quiet")) | |
4269 | quiet_flag = 1; | |
4270 | else | |
4271 | return 0; | |
4272 | break; | |
4273 | ||
4274 | case 'v': | |
4275 | if (!strcmp (arg, "version")) | |
4276 | version_flag = 1; | |
4277 | else | |
4278 | return 0; | |
4279 | break; | |
4280 | ||
4281 | case 'w': | |
4282 | if (arg[1] == 0) | |
4283 | inhibit_warnings = 1; | |
4284 | else | |
4285 | return 0; | |
4286 | break; | |
4287 | ||
4288 | case 'W': | |
4289 | if (arg[1] == 0) | |
4290 | { | |
4291 | extra_warnings = 1; | |
4292 | /* We save the value of warn_uninitialized, since if they put | |
4293 | -Wuninitialized on the command line, we need to generate a | |
4294 | warning about not using it without also specifying -O. */ | |
4295 | if (warn_uninitialized != 1) | |
4296 | warn_uninitialized = 2; | |
4297 | } | |
4298 | else | |
4299 | return decode_W_option (arg + 1); | |
4300 | break; | |
4301 | ||
4302 | case 'a': | |
4303 | if (arg[1] == 0) | |
4304 | { | |
4305 | #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) | |
4306 | warning ("`-a' option (basic block profile) not supported"); | |
4307 | #else | |
4308 | profile_block_flag = (profile_block_flag < 2) ? 1 : 3; | |
4309 | #endif | |
4310 | } | |
4311 | else if (!strcmp (arg, "ax")) | |
b8468bc7 | 4312 | { |
39dd8003 NC |
4313 | #if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER) |
4314 | warning ("`-ax' option (jump profiling) not supported"); | |
4315 | #else | |
4316 | profile_block_flag = (!profile_block_flag | |
4317 | || profile_block_flag == 2) ? 2 : 3; | |
4318 | #endif | |
4319 | } | |
4320 | else if (!strncmp (arg, "aux-info", 8)) | |
4321 | { | |
4322 | flag_gen_aux_info = 1; | |
4323 | if (arg[8] == '\0') | |
4324 | { | |
4325 | if (argc == 1) | |
4326 | return 0; | |
4327 | ||
4328 | aux_info_file_name = argv[1]; | |
4329 | return 2; | |
4330 | } | |
4331 | else | |
4332 | aux_info_file_name = arg + 8; | |
4333 | } | |
4334 | else | |
4335 | return 0; | |
4336 | break; | |
4337 | ||
4338 | case 'o': | |
4339 | if (arg[1] == 0) | |
4340 | { | |
4341 | if (argc == 1) | |
4342 | return 0; | |
1f50b029 | 4343 | |
39dd8003 NC |
4344 | asm_file_name = argv[1]; |
4345 | return 2; | |
b8468bc7 | 4346 | } |
39dd8003 NC |
4347 | return 0; |
4348 | ||
4349 | case 'G': | |
4350 | { | |
4351 | int g_switch_val; | |
4352 | int return_val; | |
4353 | ||
4354 | if (arg[1] == 0) | |
4355 | { | |
4356 | if (argc == 1) | |
4357 | return 0; | |
4358 | ||
4359 | g_switch_val = read_integral_parameter (argv[1], 0, -1); | |
4360 | return_val = 2; | |
4361 | } | |
4362 | else | |
4363 | { | |
4364 | g_switch_val = read_integral_parameter (arg + 1, 0, -1); | |
4365 | return_val = 1; | |
4366 | } | |
4367 | ||
4368 | if (g_switch_val == -1) | |
4369 | return_val = 0; | |
4370 | else | |
4371 | { | |
4372 | g_switch_set = TRUE; | |
4373 | g_switch_value = g_switch_val; | |
4374 | } | |
4375 | ||
4376 | return return_val; | |
4377 | } | |
b8468bc7 | 4378 | } |
1f50b029 | 4379 | |
b8468bc7 NC |
4380 | return 1; |
4381 | } | |
4382 | \f | |
4291d9c8 RS |
4383 | /* Entry point of cc1/c++. Decode command args, then call compile_file. |
4384 | Exit code is 35 if can't open files, 34 if fatal error, | |
4385 | 33 if had nonfatal errors, else success. */ | |
4386 | ||
58782098 | 4387 | extern int main PARAMS ((int, char **)); |
7adfcfed | 4388 | |
4291d9c8 | 4389 | int |
114791ea | 4390 | main (argc, argv) |
4291d9c8 RS |
4391 | int argc; |
4392 | char **argv; | |
4291d9c8 RS |
4393 | { |
4394 | register int i; | |
4291d9c8 RS |
4395 | char *p; |
4396 | ||
4397 | /* save in case md file wants to emit args as a comment. */ | |
4398 | save_argc = argc; | |
4399 | save_argv = argv; | |
4400 | ||
4401 | p = argv[0] + strlen (argv[0]); | |
1a8bb3dd | 4402 | while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) |
128373ac | 4403 | --p; |
4291d9c8 RS |
4404 | progname = p; |
4405 | ||
d9b53430 | 4406 | #ifdef HAVE_LC_MESSAGES |
ab87f8c8 | 4407 | setlocale (LC_MESSAGES, ""); |
d9b53430 | 4408 | #endif |
735396d9 KG |
4409 | (void) bindtextdomain (PACKAGE, localedir); |
4410 | (void) textdomain (PACKAGE); | |
ab87f8c8 | 4411 | |
4291d9c8 RS |
4412 | signal (SIGFPE, float_signal); |
4413 | ||
935d4b07 | 4414 | #ifdef SIGPIPE |
4291d9c8 | 4415 | signal (SIGPIPE, pipe_closed); |
935d4b07 | 4416 | #endif |
4291d9c8 RS |
4417 | |
4418 | decl_printable_name = decl_name; | |
114791ea | 4419 | lang_expand_expr = (lang_expand_expr_t) do_abort; |
4291d9c8 RS |
4420 | |
4421 | /* Initialize whether `char' is signed. */ | |
4422 | flag_signed_char = DEFAULT_SIGNED_CHAR; | |
4423 | #ifdef DEFAULT_SHORT_ENUMS | |
4424 | /* Initialize how much space enums occupy, by default. */ | |
4425 | flag_short_enums = DEFAULT_SHORT_ENUMS; | |
4426 | #endif | |
4427 | ||
21cd906e | 4428 | /* Initialize the garbage-collector. */ |
d09b562c | 4429 | init_ggc (); |
afe3d090 | 4430 | ggc_add_root (&input_file_stack, 1, sizeof input_file_stack, |
dd1bd863 | 4431 | mark_file_stack); |
a157febd | 4432 | ggc_add_rtx_root (&stack_limit_rtx, 1); |
00262c8a ML |
4433 | ggc_add_tree_root (¤t_function_decl, 1); |
4434 | ggc_add_tree_root (¤t_function_func_begin_label, 1); | |
afe3d090 | 4435 | |
b53beeb2 RH |
4436 | /* Perform language-specific options intialization. */ |
4437 | lang_init_options (); | |
4438 | ||
4291d9c8 RS |
4439 | /* Scan to see what optimization level has been specified. That will |
4440 | determine the default value of many flags. */ | |
4441 | for (i = 1; i < argc; i++) | |
4442 | { | |
4443 | if (!strcmp (argv[i], "-O")) | |
4444 | { | |
4445 | optimize = 1; | |
16b6e120 | 4446 | optimize_size = 0; |
4291d9c8 RS |
4447 | } |
4448 | else if (argv[i][0] == '-' && argv[i][1] == 'O') | |
4449 | { | |
c6aded7c | 4450 | /* Handle -Os, -O2, -O3, -O69, ... */ |
4291d9c8 | 4451 | char *p = &argv[i][2]; |
c6aded7c AG |
4452 | |
4453 | if ((p[0] == 's') && (p[1] == 0)) | |
16b6e120 NC |
4454 | { |
4455 | optimize_size = 1; | |
4456 | ||
4457 | /* Optimizing for size forces optimize to be 2. */ | |
4458 | optimize = 2; | |
4459 | } | |
c6aded7c AG |
4460 | else |
4461 | { | |
192babfd TP |
4462 | const int optimize_val = read_integral_parameter (p, p - 2, -1); |
4463 | if (optimize_val != -1) | |
16b6e120 | 4464 | { |
192babfd | 4465 | optimize = optimize_val; |
16b6e120 NC |
4466 | optimize_size = 0; |
4467 | } | |
c6aded7c | 4468 | } |
4291d9c8 RS |
4469 | } |
4470 | } | |
4471 | ||
4291d9c8 RS |
4472 | if (optimize >= 1) |
4473 | { | |
6731a3e3 | 4474 | flag_defer_pop = 1; |
4291d9c8 RS |
4475 | flag_thread_jumps = 1; |
4476 | #ifdef DELAY_SLOTS | |
4477 | flag_delayed_branch = 1; | |
7e89c3a3 RK |
4478 | #endif |
4479 | #ifdef CAN_DEBUG_WITHOUT_FP | |
4480 | flag_omit_frame_pointer = 1; | |
4291d9c8 RS |
4481 | #endif |
4482 | } | |
4483 | ||
4484 | if (optimize >= 2) | |
4485 | { | |
db8cb48e | 4486 | flag_optimize_sibling_calls = 1; |
4291d9c8 | 4487 | flag_cse_follow_jumps = 1; |
8b3686ed | 4488 | flag_cse_skip_blocks = 1; |
7506f491 | 4489 | flag_gcse = 1; |
4291d9c8 RS |
4490 | flag_expensive_optimizations = 1; |
4491 | flag_strength_reduce = 1; | |
4492 | flag_rerun_cse_after_loop = 1; | |
6d6d0fa0 | 4493 | flag_rerun_loop_opt = 1; |
ac266247 | 4494 | flag_caller_saves = 1; |
4ac8e06e | 4495 | flag_force_mem = 1; |
ede7cd44 | 4496 | flag_peephole2 = 1; |
4291d9c8 RS |
4497 | #ifdef INSN_SCHEDULING |
4498 | flag_schedule_insns = 1; | |
4499 | flag_schedule_insns_after_reload = 1; | |
4500 | #endif | |
8c660648 | 4501 | flag_regmove = 1; |
3f9a83a9 | 4502 | flag_strict_aliasing = 1; |
b6d24183 | 4503 | flag_delete_null_pointer_checks = 1; |
4291d9c8 RS |
4504 | } |
4505 | ||
7e89c3a3 RK |
4506 | if (optimize >= 3) |
4507 | { | |
4508 | flag_inline_functions = 1; | |
4509 | } | |
4510 | ||
efa3896a GK |
4511 | if (optimize < 2 || optimize_size) |
4512 | { | |
4513 | align_loops = 1; | |
4514 | align_jumps = 1; | |
4515 | align_labels = 1; | |
4516 | align_functions = 1; | |
4517 | } | |
4518 | ||
c1da383f DE |
4519 | /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can |
4520 | modify it. */ | |
4521 | target_flags = 0; | |
4522 | set_target_switch (""); | |
4523 | ||
4291d9c8 RS |
4524 | #ifdef OPTIMIZATION_OPTIONS |
4525 | /* Allow default optimizations to be specified on a per-machine basis. */ | |
c6aded7c | 4526 | OPTIMIZATION_OPTIONS (optimize, optimize_size); |
4291d9c8 RS |
4527 | #endif |
4528 | ||
4529 | /* Initialize register usage now so switches may override. */ | |
4530 | init_reg_sets (); | |
4531 | ||
39dd8003 NC |
4532 | /* Perform normal command line switch decoding. */ |
4533 | for (i = 1; i < argc;) | |
4291d9c8 | 4534 | { |
13eb1f7f RK |
4535 | unsigned int lang_processed; |
4536 | unsigned int indep_processed; | |
f88b51fc | 4537 | |
39dd8003 NC |
4538 | /* Give the language a chance to decode the option for itself. */ |
4539 | lang_processed = lang_decode_option (argc - i, argv + i); | |
43a8f6d5 | 4540 | |
39dd8003 NC |
4541 | /* Now see if the option also has a language independent meaning. |
4542 | Some options are both language specific and language independent, | |
4543 | eg --help. It is possible that there might be options that should | |
13eb1f7f | 4544 | only be decoded in a language independent way if they were not |
39dd8003 NC |
4545 | decoded in a langauge specific way, which is why 'lang_processed' |
4546 | is passed in. */ | |
5dff71ed JM |
4547 | indep_processed = independent_decode_option (argc - i, argv + i, |
4548 | lang_processed); | |
39dd8003 NC |
4549 | |
4550 | if (lang_processed || indep_processed) | |
5dff71ed JM |
4551 | i += (lang_processed > indep_processed |
4552 | ? lang_processed : indep_processed); | |
39dd8003 | 4553 | else |
43a8f6d5 | 4554 | { |
0c70c30f NC |
4555 | const char * option = NULL; |
4556 | const char * lang = NULL; | |
4557 | unsigned int j; | |
4558 | ||
4559 | /* It is possible that the command line switch is not valid for the | |
4560 | current language, but it is valid for another language. In order | |
4561 | to be compatible with previous versions of the compiler (which | |
4562 | did not issue an error message in this case) we check for this | |
4563 | possibilty here. If we do find a match, then if extra_warnings | |
4564 | is set we generate a warning message, otherwise we will just | |
4565 | ignore the option. */ | |
4566 | for (j = 0; j < NUM_ELEM (documented_lang_options); j++) | |
4567 | { | |
4568 | option = documented_lang_options[j].option; | |
4569 | ||
4570 | if (option == NULL) | |
4571 | lang = documented_lang_options[j].description; | |
4572 | else if (! strncmp (argv[i], option, strlen (option))) | |
4573 | break; | |
4574 | } | |
4575 | ||
bb51178f | 4576 | if (j != NUM_ELEM (documented_lang_options)) |
0c70c30f NC |
4577 | { |
4578 | if (extra_warnings) | |
4579 | { | |
4580 | warning ("Ignoring command line option '%s'", argv[i]); | |
4581 | if (lang) | |
4582 | warning ("\ | |
4583 | (It is valid for %s but not the selected langauge)", lang); | |
4584 | } | |
4585 | } | |
4586 | else | |
4dbba876 | 4587 | error ("Unrecognized option `%s'", argv[i]); |
0c70c30f | 4588 | |
43a8f6d5 JM |
4589 | i++; |
4590 | } | |
4291d9c8 RS |
4591 | } |
4592 | ||
f602c208 RK |
4593 | /* Checker uses the frame pointer. */ |
4594 | if (flag_check_memory_usage) | |
4595 | flag_omit_frame_pointer = 0; | |
4596 | ||
f246a305 RS |
4597 | if (optimize == 0) |
4598 | { | |
a2468e45 BK |
4599 | /* Inlining does not work if not optimizing, |
4600 | so force it not to be done. */ | |
f246a305 RS |
4601 | flag_no_inline = 1; |
4602 | warn_inline = 0; | |
a2468e45 BK |
4603 | |
4604 | /* The c_decode_option and lang_decode_option functions set | |
4605 | this to `2' if -Wall is used, so we can avoid giving out | |
4606 | lots of errors for people who don't realize what -Wall does. */ | |
4607 | if (warn_uninitialized == 1) | |
4608 | warning ("-Wuninitialized is not supported without -O"); | |
f246a305 RS |
4609 | } |
4610 | ||
4291d9c8 RS |
4611 | #ifdef OVERRIDE_OPTIONS |
4612 | /* Some machines may reject certain combinations of options. */ | |
4613 | OVERRIDE_OPTIONS; | |
4614 | #endif | |
4615 | ||
d1485032 JM |
4616 | if (exceptions_via_longjmp == 2) |
4617 | { | |
4618 | #ifdef DWARF2_UNWIND_INFO | |
4619 | exceptions_via_longjmp = ! DWARF2_UNWIND_INFO; | |
ce152ef8 AM |
4620 | #else |
4621 | #ifdef IA64_UNWIND_INFO | |
4622 | exceptions_via_longjmp = ! IA64_UNWIND_INFO; | |
d1485032 JM |
4623 | #else |
4624 | exceptions_via_longjmp = 1; | |
ce152ef8 | 4625 | #endif |
d1485032 JM |
4626 | #endif |
4627 | } | |
4628 | ||
ce152ef8 AM |
4629 | /* Since each function gets its own handler data, we can't support the |
4630 | new model currently, since it depend on a specific rethrow label | |
4631 | which is declared at the front of the table, and we can only | |
4632 | have one such symbol in a file. */ | |
4633 | #ifdef IA64_UNWIND_INFO | |
4634 | flag_new_exceptions = 0; | |
4635 | #endif | |
4636 | ||
efa3896a GK |
4637 | /* Set up the align_*_log variables, defaulting them to 1 if they |
4638 | were still unset. */ | |
4639 | if (align_loops <= 0) align_loops = 1; | |
4640 | align_loops_log = floor_log2 (align_loops*2-1); | |
4641 | if (align_jumps <= 0) align_jumps = 1; | |
4642 | align_jumps_log = floor_log2 (align_jumps*2-1); | |
4643 | if (align_labels <= 0) align_labels = 1; | |
4644 | align_labels_log = floor_log2 (align_labels*2-1); | |
4645 | if (align_functions <= 0) align_functions = 1; | |
4646 | align_functions_log = floor_log2 (align_functions*2-1); | |
4647 | ||
ec6c615d RK |
4648 | if (profile_block_flag == 3) |
4649 | { | |
4650 | warning ("`-ax' and `-a' are conflicting options. `-a' ignored."); | |
4651 | profile_block_flag = 2; | |
4652 | } | |
4653 | ||
4291d9c8 RS |
4654 | /* Unrolling all loops implies that standard loop unrolling must also |
4655 | be done. */ | |
4656 | if (flag_unroll_all_loops) | |
4657 | flag_unroll_loops = 1; | |
4658 | /* Loop unrolling requires that strength_reduction be on also. Silently | |
4659 | turn on strength reduction here if it isn't already on. Also, the loop | |
4660 | unrolling code assumes that cse will be run after loop, so that must | |
4661 | be turned on also. */ | |
4662 | if (flag_unroll_loops) | |
4663 | { | |
4664 | flag_strength_reduce = 1; | |
4665 | flag_rerun_cse_after_loop = 1; | |
4666 | } | |
4667 | ||
4668 | /* Warn about options that are not supported on this machine. */ | |
4669 | #ifndef INSN_SCHEDULING | |
4670 | if (flag_schedule_insns || flag_schedule_insns_after_reload) | |
4671 | warning ("instruction scheduling not supported on this target machine"); | |
4672 | #endif | |
4673 | #ifndef DELAY_SLOTS | |
4674 | if (flag_delayed_branch) | |
4675 | warning ("this target machine does not have delayed branches"); | |
4676 | #endif | |
4677 | ||
19283265 RH |
4678 | user_label_prefix = USER_LABEL_PREFIX; |
4679 | if (flag_leading_underscore != -1) | |
4680 | { | |
4681 | /* If the default prefix is more complicated than "" or "_", | |
4682 | issue a warning and ignore this option. */ | |
4683 | if (user_label_prefix[0] == 0 || | |
4684 | (user_label_prefix[0] == '_' && user_label_prefix[1] == 0)) | |
4685 | { | |
4686 | user_label_prefix = flag_leading_underscore ? "_" : ""; | |
4687 | } | |
4688 | else | |
4689 | warning ("-f%sleading-underscore not supported on this target machine", | |
4690 | flag_leading_underscore ? "" : "no-"); | |
4691 | } | |
4692 | ||
4291d9c8 RS |
4693 | /* If we are in verbose mode, write out the version and maybe all the |
4694 | option flags in use. */ | |
4695 | if (version_flag) | |
4696 | { | |
3d5cdd42 | 4697 | print_version (stderr, ""); |
4291d9c8 | 4698 | if (! quiet_flag) |
3d5cdd42 | 4699 | print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n"); |
4291d9c8 RS |
4700 | } |
4701 | ||
4291d9c8 RS |
4702 | compile_file (filename); |
4703 | ||
58f4af8e | 4704 | #if !defined(OS2) && !defined(VMS) && (!defined(_WIN32) || defined (__CYGWIN__)) && !defined(__INTERIX) |
4291d9c8 RS |
4705 | if (flag_print_mem) |
4706 | { | |
4707 | char *lim = (char *) sbrk (0); | |
4708 | ||
6ed551b4 | 4709 | fnotice (stderr, "Data size %ld.\n", (long) (lim - (char *) &environ)); |
4291d9c8 RS |
4710 | fflush (stderr); |
4711 | ||
e9a25f70 | 4712 | #ifndef __MSDOS__ |
4291d9c8 RS |
4713 | #ifdef USG |
4714 | system ("ps -l 1>&2"); | |
4715 | #else /* not USG */ | |
4716 | system ("ps v"); | |
4717 | #endif /* not USG */ | |
e9a25f70 | 4718 | #endif |
4291d9c8 | 4719 | } |
58f4af8e | 4720 | #endif /* ! OS2 && ! VMS && (! _WIN32 || CYGWIN) && ! __INTERIX */ |
4291d9c8 RS |
4721 | |
4722 | if (errorcount) | |
7adfcfed | 4723 | return (FATAL_EXIT_CODE); |
4291d9c8 | 4724 | if (sorrycount) |
7adfcfed KG |
4725 | return (FATAL_EXIT_CODE); |
4726 | return (SUCCESS_EXIT_CODE); | |
43a8f6d5 | 4727 | } |
4291d9c8 RS |
4728 | \f |
4729 | /* Decode -m switches. */ | |
4291d9c8 RS |
4730 | /* Decode the switch -mNAME. */ |
4731 | ||
114791ea | 4732 | static void |
4291d9c8 | 4733 | set_target_switch (name) |
87e11268 | 4734 | const char *name; |
4291d9c8 | 4735 | { |
85066503 | 4736 | register size_t j; |
ab87f8c8 | 4737 | int valid_target_option = 0; |
4291d9c8 RS |
4738 | |
4739 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
4740 | if (!strcmp (target_switches[j].name, name)) | |
4741 | { | |
4742 | if (target_switches[j].value < 0) | |
4743 | target_flags &= ~-target_switches[j].value; | |
4744 | else | |
4745 | target_flags |= target_switches[j].value; | |
ab87f8c8 | 4746 | valid_target_option = 1; |
4291d9c8 RS |
4747 | } |
4748 | ||
4749 | #ifdef TARGET_OPTIONS | |
ab87f8c8 | 4750 | if (!valid_target_option) |
4291d9c8 RS |
4751 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) |
4752 | { | |
4753 | int len = strlen (target_options[j].prefix); | |
4754 | if (!strncmp (target_options[j].prefix, name, len)) | |
4755 | { | |
4756 | *target_options[j].variable = name + len; | |
ab87f8c8 | 4757 | valid_target_option = 1; |
4291d9c8 RS |
4758 | } |
4759 | } | |
4760 | #endif | |
4761 | ||
ab87f8c8 | 4762 | if (!valid_target_option) |
4291d9c8 RS |
4763 | error ("Invalid option `%s'", name); |
4764 | } | |
4765 | \f | |
3d5cdd42 DE |
4766 | /* Print version information to FILE. |
4767 | Each line begins with INDENT (for the case where FILE is the | |
4768 | assembler output file). */ | |
4291d9c8 | 4769 | |
114791ea | 4770 | static void |
3d5cdd42 DE |
4771 | print_version (file, indent) |
4772 | FILE *file; | |
87e11268 | 4773 | const char *indent; |
4291d9c8 | 4774 | { |
3d5cdd42 | 4775 | #ifndef __VERSION__ |
ab87f8c8 | 4776 | #define __VERSION__ "[?]" |
3d5cdd42 | 4777 | #endif |
ab87f8c8 JL |
4778 | fnotice (file, |
4779 | #ifdef __GNUC__ | |
4780 | "%s%s%s version %s (%s) compiled by GNU C version %s.\n" | |
3d5cdd42 | 4781 | #else |
ab87f8c8 | 4782 | "%s%s%s version %s (%s) compiled by CC.\n" |
3d5cdd42 | 4783 | #endif |
ab87f8c8 JL |
4784 | , indent, *indent != 0 ? " " : "", |
4785 | language_string, version_string, TARGET_NAME, __VERSION__); | |
3d5cdd42 | 4786 | } |
4291d9c8 | 4787 | |
3d5cdd42 | 4788 | /* Print an option value and return the adjusted position in the line. |
309a8875 DE |
4789 | ??? We don't handle error returns from fprintf (disk full); presumably |
4790 | other code will catch a disk full though. */ | |
4291d9c8 | 4791 | |
114791ea | 4792 | static int |
3d5cdd42 DE |
4793 | print_single_switch (file, pos, max, indent, sep, term, type, name) |
4794 | FILE *file; | |
4795 | int pos, max; | |
87e11268 | 4796 | const char *indent, *sep, *term, *type, *name; |
3d5cdd42 | 4797 | { |
309a8875 DE |
4798 | /* The ultrix fprintf returns 0 on success, so compute the result we want |
4799 | here since we need it for the following test. */ | |
4800 | int len = strlen (sep) + strlen (type) + strlen (name); | |
4801 | ||
3d5cdd42 | 4802 | if (pos != 0 |
309a8875 | 4803 | && pos + len > max) |
4291d9c8 | 4804 | { |
3d5cdd42 DE |
4805 | fprintf (file, "%s", term); |
4806 | pos = 0; | |
4291d9c8 | 4807 | } |
3d5cdd42 DE |
4808 | if (pos == 0) |
4809 | { | |
309a8875 DE |
4810 | fprintf (file, "%s", indent); |
4811 | pos = strlen (indent); | |
3d5cdd42 | 4812 | } |
309a8875 DE |
4813 | fprintf (file, "%s%s%s", sep, type, name); |
4814 | pos += len; | |
3d5cdd42 | 4815 | return pos; |
4291d9c8 RS |
4816 | } |
4817 | ||
3d5cdd42 DE |
4818 | /* Print active target switches to FILE. |
4819 | POS is the current cursor position and MAX is the size of a "line". | |
4820 | Each line begins with INDENT and ends with TERM. | |
4821 | Each switch is separated from the next by SEP. */ | |
4291d9c8 | 4822 | |
25074193 | 4823 | static void |
3d5cdd42 DE |
4824 | print_switch_values (file, pos, max, indent, sep, term) |
4825 | FILE *file; | |
4826 | int pos, max; | |
87e11268 | 4827 | const char *indent, *sep, *term; |
4291d9c8 | 4828 | { |
85066503 | 4829 | size_t j; |
3d5cdd42 DE |
4830 | char **p; |
4831 | ||
4832 | /* Print the options as passed. */ | |
4291d9c8 | 4833 | |
3d5cdd42 | 4834 | pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term, |
ab87f8c8 | 4835 | _("options passed: "), ""); |
3d5cdd42 | 4836 | |
520e7ff5 | 4837 | for (p = &save_argv[1]; *p != NULL; p++) |
3d5cdd42 DE |
4838 | if (**p == '-') |
4839 | { | |
4840 | /* Ignore these. */ | |
520e7ff5 DE |
4841 | if (strcmp (*p, "-o") == 0) |
4842 | { | |
4843 | if (p[1] != NULL) | |
4844 | p++; | |
4845 | continue; | |
4846 | } | |
3d5cdd42 DE |
4847 | if (strcmp (*p, "-quiet") == 0) |
4848 | continue; | |
4849 | if (strcmp (*p, "-version") == 0) | |
4850 | continue; | |
4851 | if ((*p)[1] == 'd') | |
4852 | continue; | |
4853 | ||
4854 | pos = print_single_switch (file, pos, max, indent, sep, term, *p, ""); | |
4855 | } | |
4856 | if (pos > 0) | |
4857 | fprintf (file, "%s", term); | |
4858 | ||
4859 | /* Print the -f and -m options that have been enabled. | |
4860 | We don't handle language specific options but printing argv | |
4861 | should suffice. */ | |
4862 | ||
4863 | pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term, | |
ab87f8c8 | 4864 | _("options enabled: "), ""); |
4291d9c8 RS |
4865 | |
4866 | for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++) | |
4867 | if (*f_options[j].variable == f_options[j].on_value) | |
3d5cdd42 DE |
4868 | pos = print_single_switch (file, pos, max, indent, sep, term, |
4869 | "-f", f_options[j].string); | |
4291d9c8 | 4870 | |
3d5cdd42 | 4871 | /* Print target specific options. */ |
4291d9c8 RS |
4872 | |
4873 | for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++) | |
4874 | if (target_switches[j].name[0] != '\0' | |
4875 | && target_switches[j].value > 0 | |
4876 | && ((target_switches[j].value & target_flags) | |
4877 | == target_switches[j].value)) | |
3d5cdd42 DE |
4878 | { |
4879 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4880 | "-m", target_switches[j].name); | |
3d5cdd42 DE |
4881 | } |
4882 | ||
4883 | #ifdef TARGET_OPTIONS | |
4884 | for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++) | |
4885 | if (*target_options[j].variable != NULL) | |
4886 | { | |
4887 | char prefix[256]; | |
4888 | sprintf (prefix, "-m%s", target_options[j].prefix); | |
4889 | pos = print_single_switch (file, pos, max, indent, sep, term, | |
4890 | prefix, *target_options[j].variable); | |
4891 | } | |
4892 | #endif | |
4291d9c8 | 4893 | |
3d5cdd42 | 4894 | fprintf (file, "%s", term); |
4291d9c8 | 4895 | } |
9a666dda JM |
4896 | |
4897 | /* Record the beginning of a new source file, named FILENAME. */ | |
4898 | ||
4899 | void | |
4900 | debug_start_source_file (filename) | |
3b304f5b | 4901 | register const char *filename ATTRIBUTE_UNUSED; |
9a666dda JM |
4902 | { |
4903 | #ifdef DBX_DEBUGGING_INFO | |
4904 | if (write_symbols == DBX_DEBUG) | |
4905 | dbxout_start_new_source_file (filename); | |
4906 | #endif | |
4907 | #ifdef DWARF_DEBUGGING_INFO | |
4908 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4909 | && write_symbols == DWARF_DEBUG) | |
4910 | dwarfout_start_new_source_file (filename); | |
4911 | #endif /* DWARF_DEBUGGING_INFO */ | |
4912 | #ifdef DWARF2_DEBUGGING_INFO | |
4913 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4914 | && write_symbols == DWARF2_DEBUG) | |
4915 | dwarf2out_start_source_file (filename); | |
4916 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
4917 | #ifdef SDB_DEBUGGING_INFO |
4918 | if (write_symbols == SDB_DEBUG) | |
4919 | sdbout_start_new_source_file (filename); | |
4920 | #endif | |
9a666dda JM |
4921 | } |
4922 | ||
4923 | /* Record the resumption of a source file. LINENO is the line number in | |
4924 | the source file we are returning to. */ | |
4925 | ||
4926 | void | |
4927 | debug_end_source_file (lineno) | |
c84e2712 | 4928 | register unsigned lineno ATTRIBUTE_UNUSED; |
9a666dda JM |
4929 | { |
4930 | #ifdef DBX_DEBUGGING_INFO | |
4931 | if (write_symbols == DBX_DEBUG) | |
4932 | dbxout_resume_previous_source_file (); | |
4933 | #endif | |
4934 | #ifdef DWARF_DEBUGGING_INFO | |
4935 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4936 | && write_symbols == DWARF_DEBUG) | |
4937 | dwarfout_resume_previous_source_file (lineno); | |
4938 | #endif /* DWARF_DEBUGGING_INFO */ | |
4939 | #ifdef DWARF2_DEBUGGING_INFO | |
4940 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4941 | && write_symbols == DWARF2_DEBUG) | |
4942 | dwarf2out_end_source_file (); | |
4943 | #endif /* DWARF2_DEBUGGING_INFO */ | |
cc694a81 DE |
4944 | #ifdef SDB_DEBUGGING_INFO |
4945 | if (write_symbols == SDB_DEBUG) | |
4946 | sdbout_resume_previous_source_file (); | |
4947 | #endif | |
9a666dda JM |
4948 | } |
4949 | ||
4950 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
4951 | the tail part of the directive line, i.e. the part which is past the | |
4952 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
4953 | ||
4954 | void | |
4955 | debug_define (lineno, buffer) | |
91813b28 KG |
4956 | register unsigned lineno ATTRIBUTE_UNUSED; |
4957 | register char *buffer ATTRIBUTE_UNUSED; | |
9a666dda JM |
4958 | { |
4959 | #ifdef DWARF_DEBUGGING_INFO | |
4960 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4961 | && write_symbols == DWARF_DEBUG) | |
4962 | dwarfout_define (lineno, buffer); | |
4963 | #endif /* DWARF_DEBUGGING_INFO */ | |
4964 | #ifdef DWARF2_DEBUGGING_INFO | |
4965 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4966 | && write_symbols == DWARF2_DEBUG) | |
4967 | dwarf2out_define (lineno, buffer); | |
4968 | #endif /* DWARF2_DEBUGGING_INFO */ | |
4969 | } | |
4970 | ||
4971 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
4972 | the tail part of the directive line, i.e. the part which is past the | |
4973 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
4974 | ||
4975 | void | |
4976 | debug_undef (lineno, buffer) | |
91813b28 KG |
4977 | register unsigned lineno ATTRIBUTE_UNUSED; |
4978 | register char *buffer ATTRIBUTE_UNUSED; | |
9a666dda JM |
4979 | { |
4980 | #ifdef DWARF_DEBUGGING_INFO | |
4981 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4982 | && write_symbols == DWARF_DEBUG) | |
4983 | dwarfout_undef (lineno, buffer); | |
4984 | #endif /* DWARF_DEBUGGING_INFO */ | |
4985 | #ifdef DWARF2_DEBUGGING_INFO | |
4986 | if (debug_info_level == DINFO_LEVEL_VERBOSE | |
4987 | && write_symbols == DWARF2_DEBUG) | |
4988 | dwarf2out_undef (lineno, buffer); | |
4989 | #endif /* DWARF2_DEBUGGING_INFO */ | |
4990 | } | |
fcd7f76b | 4991 | |
64b59a80 JM |
4992 | /* Returns nonzero if it is appropriate not to emit any debugging |
4993 | information for BLOCK, because it doesn't contain any instructions. | |
4994 | This may not be the case for blocks containing nested functions, since | |
4995 | we may actually call such a function even though the BLOCK information | |
4996 | is messed up. */ | |
fcd7f76b | 4997 | |
64b59a80 | 4998 | int |
fcd7f76b | 4999 | debug_ignore_block (block) |
32070bf2 | 5000 | tree block ATTRIBUTE_UNUSED; |
fcd7f76b | 5001 | { |
64b59a80 JM |
5002 | /* Never delete the BLOCK for the outermost scope |
5003 | of the function; we can refer to names from | |
5004 | that scope even if the block notes are messed up. */ | |
5005 | if (is_body_block (block)) | |
5006 | return 0; | |
5007 | ||
fcd7f76b JM |
5008 | #ifdef DWARF2_DEBUGGING_INFO |
5009 | if (write_symbols == DWARF2_DEBUG) | |
64b59a80 | 5010 | return dwarf2out_ignore_block (block); |
fcd7f76b | 5011 | #endif |
64b59a80 JM |
5012 | |
5013 | return 1; | |
fcd7f76b | 5014 | } |