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Duncan Sands
190e5a3314
Nick pointed out on IRC that GVN's propagateEquality wasn't propagating
equalities into phi node operands for which the equality is known to hold in the incoming basic block. That's because replaceAllDominatedUsesWith wasn't handling phi nodes correctly in general (that this didn't give wrong results was just luck: the specific way GVN uses replaceAllDominatedUsesWith precluded wrong changes to phi nodes). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152006 91177308-0d34-0410-b5e6-96231b3b80d8
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