There is no need to clone over nodes that are going to be dead anyway
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11157 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/DataStructure.cpp b/lib/Analysis/DataStructure/DataStructure.cpp
index 470899e..5050515 100644
--- a/lib/Analysis/DataStructure/DataStructure.cpp
+++ b/lib/Analysis/DataStructure/DataStructure.cpp
@@ -1112,9 +1112,11 @@
BitsToClear |= DSNode::DEAD; // Clear dead flag...
for (unsigned i = 0, e = G.Nodes.size(); i != e; ++i) {
DSNode *Old = G.Nodes[i];
- DSNode *New = new DSNode(*Old, this);
- New->maskNodeTypes(~BitsToClear);
- OldNodeMap[Old] = New;
+ if (!Old->isForwarding()) {
+ DSNode *New = new DSNode(*Old, this);
+ New->maskNodeTypes(~BitsToClear);
+ OldNodeMap[Old] = New;
+ }
}
#ifndef NDEBUG
Timer::addPeakMemoryMeasurement();