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Commit 7e2ca6e7 authored by Arnold Schwaighofer's avatar Arnold Schwaighofer
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Cost model: Add check for reverse shuffles to CostModel analysis 

Check for reverse shuffles in the CostModel analysis pass and query
TargetTransform info accordingly. This allows us we can write test cases for
reverse shuffles.

radar://13171406

llvm-svn: 174932
parent a00399c9
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