Avoid copying and recopying a std::set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109405 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/VMCore/Dominators.cpp b/lib/VMCore/Dominators.cpp
index 8a33eb0..8a68b4e 100644
--- a/lib/VMCore/Dominators.cpp
+++ b/lib/VMCore/Dominators.cpp
@@ -140,12 +140,8 @@
// NewBBSucc inherits original NewBB frontier.
DominanceFrontier::iterator NewBBI = find(NewBB);
- if (NewBBI != end()) {
- DominanceFrontier::DomSetType NewBBSet = NewBBI->second;
- DominanceFrontier::DomSetType NewBBSuccSet;
- NewBBSuccSet.insert(NewBBSet.begin(), NewBBSet.end());
- addBasicBlock(NewBBSucc, NewBBSuccSet);
- }
+ if (NewBBI != end())
+ addBasicBlock(NewBBSucc, NewBBI->second);
// If NewBB dominates NewBBSucc, then DF(NewBB) is now going to be the
// DF(NewBBSucc) without the stuff that the new block does not dominate