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X86: Update isVectorShiftByScalarCheap with cases covered by AVX512BW

Description

X86: Update isVectorShiftByScalarCheap with cases covered by AVX512BW

Summary:
AVX512BW adds support for variable shift amount for 16-bit element
vectors.

Reviewers: craig.topper, RKSimon, spatel

Reviewed By: RKSimon

Subscribers: rengolin, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D42437

Details

Committed
zviJan 23 2018, 5:36 PM
Reviewer
RKSimon
Differential Revision
D42437: X86: Update isVectorShiftByScalarCheap with cases covered by AVX512BW
Parents
rL323291: [GISel]: Remove redundant copies at the end of ISel
Branches
Unknown
Tags
Unknown