Cleanup. Added LoopBlocksDFS::perform for simple clients.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137195 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LoopUnroll.cpp b/lib/Transforms/Utils/LoopUnroll.cpp
index f17098f..6b2f9ef 100644
--- a/lib/Transforms/Utils/LoopUnroll.cpp
+++ b/lib/Transforms/Utils/LoopUnroll.cpp
@@ -230,13 +230,8 @@
// reverse postorder so that LastValueMap contains the correct value at each
// exit.
LoopBlocksDFS DFS(L);
- {
- // Traverse the loop blocks using depth-first search to record RPO numbers
- // for each block in the DFS result.
- LoopBlocksTraversal Traversal(DFS, LI);
- for (LoopBlocksTraversal::POTIterator POI = Traversal.begin(),
- POE = Traversal.end(); POI != POE; ++POI);
- }
+ DFS.perform(LI);
+
// Stash the DFS iterators before adding blocks to the loop.
LoopBlocksDFS::RPOIterator BlockBegin = DFS.beginRPO();
LoopBlocksDFS::RPOIterator BlockEnd = DFS.endRPO();