Move GVNHoist to the right position in the new pass manager pipeline.
Move GVNHoist to the right position in the new pass manager pipeline.

GVNHoist was moved as part of simplification passes for the current
pass manager (but not for the new), so they're out-of-sync.

Differential Revision:  https://reviews.llvm.org/D33806

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@304490 91177308-0d34-0410-b5e6-96231b3b80d8

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