[AVX512] Zero extend the result of vpcmpeq/vpcmpgt and similar intrinsics in the autoupgrade code. This currently results in worse codegen but is needed for correctness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274736 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed