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5df684a6d1
This class checks dependences by subtracting two Scalar Evolution access functions allowing us to catch very simple linear dependences. The checker assumes source order in determining whether vectorization is safe. We currently don't reorder accesses. Positive true dependencies need to be a multiple of VF otherwise we impede store-load forwarding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184684 91177308-0d34-0410-b5e6-96231b3b80d8
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