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Author SHA1 Message Date
Nadav Rotem 67d67a0385 Fix 9216 - Endless loop in InstCombine pass. 
The pattern "A&(A^B) -> A & ~B" recreated itself because ~B is
actually a xor -1.

llvm-svn: 125557
 2011-02-15 07:13:48 +00:00