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713d9cbc3e
This adds some code back that was deleted in r92053. The location of the last merged memory operation needs to be kept up-to-date since MemOps may be in a different order to the original instruction stream to allow merging (since registers need to be in ascending order). Also simplify the logic to determine BaseKill using findRegisterUseOperandIdx to use an equivalent function call instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215728 91177308-0d34-0410-b5e6-96231b3b80d8
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