[X86] Consistently use MVT::i8 for the constant operand of BLENDI and INSERTPS nodes.
[X86] Consistently use MVT::i8 for the constant operand of BLENDI and INSERTPS nodes.

This is the type listed in the type constraint for isel. But since
we list a type there, it doesn't get checked during isel matching.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@367775 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm