[Bug rtl-optimization/42889] [4.5 Regression] "-fcompare-debug failure (length)" with "-O1 -fgcse"

[aoliva at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42889

--- Comment #22 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2010-11-13 
18:52:00 UTC ---
Author: aoliva
Date: Sat Nov 13 18:51:57 2010
New Revision: 166719

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166719
Log:
PR debug/42889
* df-scan.c (df_insn_rescan): Don't mark BBs upon debug insns.
* df-core.c (df_set_bb_dirty_nonrl): Remove.
* df.h (df_set_bb_dirty_nonlr): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/df-core.c
    trunk/gcc/df-scan.c
    trunk/gcc/df.h