diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 1a8a4bc..970533b 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -157,6 +157,7 @@
   SchedPreferenceInfo = SchedulingForLatency;
   JumpBufSize = 0;
   JumpBufAlignment = 0;
+  IfCvtBlockSizeLimit = 2;
 
   InitLibcallNames(LibcallRoutineNames);
   InitCmpLibcallCCs(CmpLibcallCCs);