X86: Fix FastISel SSESelect register class

X86FastISel has been using the wrong register class for VBLENDVPS which
produces a VR128 and needs an extra copy to the target register. The
problem was already hit by the existing test cases when using
> llvm-lit -Dllc="llc -verify-machineinstr"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246461 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed