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d791dcafe4
Summary: Previously we wouldn't move loads/stores across instructions that had side-effects, where that was defined as may-write or may-throw. But this is not sufficiently restrictive: Stores can't safely be moved across instructions that may load. This patch also adds a DEBUG check that all instructions in our chain are either loads or stores. Reviewers: asbirlea Subscribers: llvm-commits, jholewinski, arsenm, mzolotukhin Differential Revision: https://reviews.llvm.org/D22547 llvm-svn: 276171
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