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I added a pessimization in r217102 to prevent miscompiles when the incremented induction variable was used in a comparison; it would be poison. Try to use the incremented induction variable more often when we can be sure that the increment won't end in poison. Differential Revision: http://reviews.llvm.org/D6222 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222213 91177308-0d34-0410-b5e6-96231b3b80d8
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