[PATCH] D26134: [AVX-512] Add patterns for matching KANDN using immAllOnesV. Remove patterns that tried to match a -1 constant created by 'not' with a vXi1 type.

[Craig Topper via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: delena, igorb.
craig.topper added a subscriber: llvm-commits.

Looks like 'not' in patterns doesn't work properly for vector types and ends up creating a patterns that look for a single immediate with a vector type. This can't really occur.

This patch replaces all uses of 'not' on vectors with 'null_frag' and then adds patterns for KANDN. We already had the patterns for KNOT and KXNOR.


https://reviews.llvm.org/D26134

Files:
  lib/Target/X86/X86InstrAVX512.td
  test/CodeGen/X86/avx512-mask-op.ll
  test/CodeGen/X86/avx512-select.ll

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