diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 5019a848a44..d9335477400 100644
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -87,6 +87,7 @@ namespace {
       DEBUG(BB->dump());
       // Select target instructions for the DAG.
       DAG.setRoot(Select(DAG.getRoot()));
+      CodeGenMap.clear();
       DAG.RemoveDeadNodes();
       
       // Emit machine code to BB.