From d266b0fcd8325f2036b3769a283fe2702f7dd427 Mon Sep 17 00:00:00 2001
From: Gabor Greif <ggreif@gmail.com>
Date: Fri, 9 Jul 2010 09:50:51 +0000
Subject: [PATCH] reuse result of operator*, it is expensive to recompute

llvm-svn: 107959
---
 include/llvm/Analysis/LoopInfo.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/llvm/Analysis/LoopInfo.h b/include/llvm/Analysis/LoopInfo.h
index 7b38052257a..9be01dd96f8 100644
--- a/include/llvm/Analysis/LoopInfo.h
+++ b/include/llvm/Analysis/LoopInfo.h
@@ -757,9 +757,11 @@ public:
     typedef GraphTraits<Inverse<BlockT*> > InvBlockTraits;
     for (typename InvBlockTraits::ChildIteratorType I =
          InvBlockTraits::child_begin(BB), E = InvBlockTraits::child_end(BB);
-         I != E; ++I)
-      if (DT.dominates(BB, *I))   // If BB dominates its predecessor...
-        TodoStack.push_back(*I);
+         I != E; ++I) {
+      typename InvBlockTraits::NodeType *N = *I;
+      if (DT.dominates(BB, N))   // If BB dominates its predecessor...
+          TodoStack.push_back(N);
+    }
 
     if (TodoStack.empty()) return 0;  // No backedges to this block...