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

[jakub at gcc dot gnu dot org]

------- Comment #20 from jakub at gcc dot gnu dot org  2010-01-29 12:15 -------
Subject: Bug 42889

Author: jakub
Date: Fri Jan 29 12:14:47 2010
New Revision: 156344

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=156344
Log:
        PR rtl-optimization/42889
        * df.h (df_set_bb_dirty_nonlr): New prototype.
        * df-core.c (df_set_bb_dirty_nonlr): New function.
        * df-scan.c (df_insn_rescan): Call it instead of
        df_set_bb_dirty for DEBUG_INSNs.

        * gcc.dg/pr42889.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr42889.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/df-core.c
    trunk/gcc/df-scan.c
    trunk/gcc/df.h
    trunk/gcc/testsuite/ChangeLog


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