[Bug rtl-optimization/20527] [4.0 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  2005-04-05 16:46 -------
Subject: Bug 20527

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	hp@gcc.gnu.org	2005-04-05 16:45:56

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&only_with_tag=gcc-4_0-branch&r1=2.7592.2.127&r2=2.7592.2.128
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.475.4.2&r2=1.475.4.3



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