diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 871d6dc5765..f807e8fa261 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -1011,9 +1011,6 @@ static bool IsBetterFallthrough(MachineBasicBlock *MBB1,
 bool BranchFolder::TailDuplicateBlocks(MachineFunction &MF) {
   bool MadeChange = false;
 
-  // Make sure blocks are numbered in order
-  MF.RenumberBlocks();
-
   for (MachineFunction::iterator I = ++MF.begin(), E = MF.end(); I != E; ) {
     MachineBasicBlock *MBB = I++;