Simon Pilgrim e4d12bb2d6 [DAGCombiner] Call SimplifyDemandedVectorElts from EXTRACT_VECTOR_ELT ...

If we are only extracting vector elements via EXTRACT_VECTOR_ELT(s) we may be able to use SimplifyDemandedVectorElts to avoid unnecessary vector ops.

Differential Revision: https://reviews.llvm.org/D49262

llvm-svn: 337258

2018-07-17 09:45:35 +00:00

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