[X86] Don't use getScalarShiftAmountTy to get the immediate type for target specific VSHLDQ/VSRLDQ nodes.

These opcodes have a fixed type of i8 for their immediate and shouldn't have anything to do with the scalar shift amount used by target independent shift nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335578 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed