Index: llvm/trunk/lib/Target/PowerPC/PPCFrameLowering.cpp
===================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCFrameLowering.cpp
+++ llvm/trunk/lib/Target/PowerPC/PPCFrameLowering.cpp
@@ -1531,11 +1531,11 @@
 
 void PPCFrameLowering::createTailCallBranchInstr(MachineBasicBlock &MBB) const {
   MachineBasicBlock::iterator MBBI = MBB.getFirstTerminator();
-  DebugLoc dl;
 
-  if (MBBI != MBB.end())
-    dl = MBBI->getDebugLoc();
+  // If we got this far a first terminator should exist.
+  assert(MBBI != MBB.end() && "Failed to find the first terminator.");
 
+  DebugLoc dl = MBBI->getDebugLoc();
   const PPCInstrInfo &TII = *Subtarget.getInstrInfo();
 
   // Create branch instruction for pseudo tail call return instruction