diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index 44e041a..02ad4e4 100644
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -1000,7 +1000,7 @@
 
   // Iterate to the next basic block, unless we're already at the end of the
   ilist<MachineBasicBlock>::iterator It = BB, E = BB->getParent()->end();
-  if (It != E) ++It;
+  if (++It == E) It = BB;
 
   // If this is a two way branch, then grab the fallthrough basic block argument
   // and build a PowerPC branch pseudo-op, suitable for long branch conversion