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comparison gcc/web.c @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents b7f97abdc517
children 04ced10e8804
comparison
equal deleted inserted replaced
65:65488c3d617d 67:f6334be47118
36 36
37 #include "config.h" 37 #include "config.h"
38 #include "system.h" 38 #include "system.h"
39 #include "coretypes.h" 39 #include "coretypes.h"
40 #include "tm.h" 40 #include "tm.h"
41 #include "toplev.h" 41 #include "diagnostic-core.h"
42 42
43 #include "rtl.h" 43 #include "rtl.h"
44 #include "hard-reg-set.h" 44 #include "hard-reg-set.h"
45 #include "flags.h" 45 #include "flags.h"
46 #include "obstack.h" 46 #include "obstack.h"
375 in progress. */ 375 in progress. */
376 FOR_ALL_BB (bb) 376 FOR_ALL_BB (bb)
377 FOR_BB_INSNS (bb, insn) 377 FOR_BB_INSNS (bb, insn)
378 { 378 {
379 unsigned int uid = INSN_UID (insn); 379 unsigned int uid = INSN_UID (insn);
380 if (NONDEBUG_INSN_P (insn)) 380
381 if (NONDEBUG_INSN_P (insn)
382 /* Ignore naked clobber. For example, reg 134 in the second insn
383 of the following sequence will not be replaced.
384
385 (insn (clobber (reg:SI 134)))
386
387 (insn (set (reg:SI 0 r0) (reg:SI 134)))
388
389 Thus the later passes can optimize them away. */
390 && GET_CODE (PATTERN (insn)) != CLOBBER)
381 { 391 {
382 df_ref *use_rec; 392 df_ref *use_rec;
383 df_ref *def_rec; 393 df_ref *def_rec;
384 for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++) 394 for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++)
385 { 395 {