[LoopRotate][Dominators] Use the incremental API to update DomTree
[LoopRotate][Dominators] Use the incremental API to update DomTree

Summary: This patch teaches LoopRotate to use the new incremental API to update the DominatorTree.

Reviewers: dberlin, davide, grosser, sanjoy

Reviewed By: dberlin, davide

Subscribers: hiraditya, llvm-commits, mzolotukhin

Differential Revision: https://reviews.llvm.org/D35581

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@311125 91177308-0d34-0410-b5e6-96231b3b80d8

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