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Commit a3932384 authored by Petar Avramovic's avatar Petar Avramovic
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[GlobalISel] Factor narrowScalar for G_ASHR and G_LSHR. NFC 

Main difference is in the way Hi for Long shift (HiL) is made.
G_LSHR fills HiL with zeros, while G_ASHR fills HiL with sign bit value.

Differential Revision: https://reviews.llvm.org/D66589

llvm-svn: 370064
parent d568ed40
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