[LegalizeTypes] Remove unnecessary type action check on the type of operand 0 when promoting shift result type. NFC
[LegalizeTypes] Remove unnecessary type action check on the type of operand 0 when promoting shift result type. NFC

Operand 0 should have the same type of the result. So if the result type needs to be promoted, operand 0 needs to be promoted unconditionally.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@329883 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm