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Commit c9cf7fc7 authored by Simon Pilgrim's avatar Simon Pilgrim
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[InstCombine][X86] Add DemandedElts support for PMULDQ/PMULUDQ instructions 

PMULDQ/PMULUDQ vXi64 instructions only use the even numbered v2Xi32 input elements which SimplifyDemandedVectorElts should try and use.

Differential Revision: https://reviews.llvm.org/D28119

llvm-svn: 290554
parent d9eaa54e
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