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Commit 720db8ed authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][AVX1] Enable *_EXTEND_VECTOR_INREG lowering of 256-bit vectors 

As discussed on D52964, this adds 256-bit *_EXTEND_VECTOR_INREG lowering support for AVX1 targets to help improve SimplifyDemandedBits handling.

Differential Revision: https://reviews.llvm.org/D52980

llvm-svn: 344019
parent ceff1077
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