[PATCH] D25933: [AVX-512] Add scalar vfmsub mask3 intrinsics

[Craig Topper via llvm-commits]

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

Clang's intrinsic header currently tries to negate the third operand of a vfmadd mask3 in order to create vfmsub, but this fails isel. This patch add scalar vfmsub mask3 that we can use instead to avoid the negate. This is consistent with the packed instructions.


https://reviews.llvm.org/D25933

Files:
  include/llvm/IR/IntrinsicsX86.td
  lib/Target/X86/X86IntrinsicsInfo.h
  test/CodeGen/X86/avx512-intrinsics.ll

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