[X86] Teach combineShuffle to avoid creating floating point operations with integer types and integer operations with floating point types. Seems isOperationLegal lies for mismatched types and operations.

Fixes PR30511.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282341 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed