[ARM] Make sure we do not dereference the end iterator when accessing debug

[oota-llvm.git] / lib / Target / ARM / ARMFrameLowering.cpp

diff --git a/lib/Target/ARM/ARMFrameLowering.cpp b/lib/Target/ARM/ARMFrameLowering.cpp
index 802946aa8d9c477258773c651af5edc6d5df1ef8..f0f077e0bc2d2ca3fa8a95ab79fbd50d216aff93 100644 (file)
--- a/lib/Target/ARM/ARMFrameLowering.cpp
+++ b/lib/Target/ARM/ARMFrameLowering.cpp
@@ -1060,7 +1060,7 @@ static void emitAlignedDPRCS2Spills(MachineBasicBlock &MBB,
                                     const TargetRegisterInfo *TRI) {
   MachineFunction &MF = *MBB.getParent();
   ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
-  DebugLoc DL = MI->getDebugLoc();
+  DebugLoc DL = MI != MBB.end() ? MI->getDebugLoc() : DebugLoc();
   const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
   MachineFrameInfo &MFI = *MF.getFrameInfo();
 
@@ -1220,7 +1220,7 @@ static void emitAlignedDPRCS2Restores(MachineBasicBlock &MBB,
                                       const TargetRegisterInfo *TRI) {
   MachineFunction &MF = *MBB.getParent();
   ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
-  DebugLoc DL = MI->getDebugLoc();
+  DebugLoc DL = MI != MBB.end() ? MI->getDebugLoc() : DebugLoc();
   const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
 
   // Find the frame index assigned to d8.