diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 3887e6d44e4..6c8e09141bd 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -1222,7 +1222,7 @@ ReoptimizeBlock:
         // Analyze the branch at the end of the pred.
         MachineBasicBlock *PredBB = *PI;
         MachineFunction::iterator PredFallthrough = PredBB; ++PredFallthrough;
-        MachineBasicBlock *PredTBB, *PredFBB;
+        MachineBasicBlock *PredTBB = 0, *PredFBB = 0;
         SmallVector<MachineOperand, 4> PredCond;
         if (PredBB != MBB && !PredBB->canFallThrough() &&
             !TII->AnalyzeBranch(*PredBB, PredTBB, PredFBB, PredCond, true)