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Commit b092bd32 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86][SSE] Add support for X86ISD::PACKSS to ComputeNumSignBitsForTargetNode 

Helps improve combineLogicBlendIntoPBLENDV support by allowing us to peek into through PACKSS truncations of vector comparison results.

Differential Revision: https://reviews.llvm.org/D37680

llvm-svn: 312916
parent 660ba2b8
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