Craig Topper 6794eb8ba1 [SelectionDAG] Cleanup the SIGN_EXTEND_INREG handling in computeKnownBits. NFCI ...

Use less temporary APInts. Use bit counting more. Don't call getScalarSizeInBits so many places, just capture it once.

llvm-svn: 315671

2017-10-13 05:35:35 +00:00

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