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[Bug tree-optimization/21173] [4.0/4.1 regression] miscompiled pointer subtraction broke Linux kernel


------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-28 23:38 -------
Subject: Bug 21173

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	apple-local-200502-branch
Changes by:	dalej@gcc.gnu.org	2005-04-28 23:38:11

Modified files:
	gcc            : ChangeLog.apple-ppc tree-ssa-pre.c 

Log message:
	2005-04-28  Dale Johannesen  <dalej@apple.com>
	
	Radar 4100712 (PR 21173, Dan Berlin's patch)
	
	* tree-ssa-pre.c (create_expression_by_pieces): Call unshare_expr
	on things we pass to force_gimple_operand.  Don't try to special
	case min_invariants.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.apple-ppc.diff?cvsroot=gcc&only_with_tag=apple-local-200502-branch&r1=1.1.4.53&r2=1.1.4.54
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&only_with_tag=apple-local-200502-branch&r1=2.64.2.2&r2=2.64.2.3



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21173


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