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85ee7e9487
Summary: Previously, the insertion point for stores was the last instruction in Chain *before calling getVectorizablePrefixEndIdx*. Thus if getVectorizablePrefixEndIdx didn't return Chain.size(), we still would insert at the last instruction in Chain. This patch changes our internal API a bit in an attempt to make it less prone to this sort of error. As a result, we end up recalculating the Chain's boundary instructions, but I think worrying about the speed hit of this is a premature optimization right now. Reviewers: asbirlea, tstellarAMD Subscribers: mzolotukhin, arsenm, llvm-commits Differential Revision: https://reviews.llvm.org/D22534 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276056 91177308-0d34-0410-b5e6-96231b3b80d8