[X86] Add test case showing missing opportunity to fold vmovsdb into a store after type legalization. NFC
[X86] Add test case showing missing opportunity to fold vmovsdb into a store after type legalization. NFC

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@374614 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm