From d2d975233d3f56a0aec3ee3965c1cdb7a6ba1dbd Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Mon, 26 Jul 2010 17:45:33 +0000 Subject: [PATCH] Avoid copying and recopying a std::set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109405 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/VMCore/Dominators.cpp | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/lib/VMCore/Dominators.cpp b/lib/VMCore/Dominators.cpp index 8a33eb06236..8a68b4e9da1 100644 --- a/lib/VMCore/Dominators.cpp +++ b/lib/VMCore/Dominators.cpp @@ -140,12 +140,8 @@ void DominanceFrontier::splitBlock(BasicBlock *NewBB) { // 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 -- 2.34.1