[Bug rtl-optimization/20527] [4.0/4.1 regression] Mishandling of postincrement causes bzip2 miscompilation.

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-03-22 
03:48 -------
Subject: Bug 20527

CVSROOT:        /cvs/gcc
Module name:    gcc
Changes by:     [EMAIL PROTECTED]       2005-03-22 03:48:45

Modified files:
        gcc            : ChangeLog combine.c 

Log message:
        PR rtl-optimization/20527
        * combine.c (can_combine_p) [AUTO_INC_DEC]: When INSN has an
        REG_INC note, test that the register also isn't mentioned in PRED
        or SUCC.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7953&r2=2.7954
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.483&r2=1.484



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20527