[AVX-512] Support ADD/SUB/MUL of mask vectors
Summary:
Currently we expand and scalarize these operations, but I think we should be able to implement ADD/SUB with KXOR and MUL with KAND.
We already do this for scalar i1 operations so I just extended it to vectors of i1.
Reviewers: zvi, delena
Reviewed By: delena
Subscribers: guyblank, llvm-commits
Differential Revision: https://reviews.llvm.org/D28888
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292474
91177308-0d34-0410-b5e6-
96231b3b80d8
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