[X86] Simplify ISD::LOAD handling in ReplaceNodeResults and ISD::STORE handling in LowerStore now that v2i32 is widened to v4i32.
[X86] Simplify ISD::LOAD handling in ReplaceNodeResults and ISD::STORE handling in LowerStore now that v2i32 is widened to v4i32.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@368390 91177308-0d34-0410-b5e6-96231b3b80d8

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