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Commit 47ff0431 authored by Simon Pilgrim's avatar Simon Pilgrim
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[SelectionDAG] Optional handling of UNDEF elements in matchBinaryPredicate (part 1 of 2) 

Now that SimplifyDemandedBits/SimplifyDemandedVectorElts is simplifying vector elements, we're seeing more constant BUILD_VECTOR containing undefs.

This patch provides opt-in support for UNDEF elements in matchBinaryPredicate, passing NULL instead of the result ConstantSDNode* argument.

Differential Revision: https://reviews.llvm.org/D55822

llvm-svn: 349628
parent c177c3a5
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