1 files changed, 11 insertions, 7 deletions
diff --git a/llvm/lib/Target/Mips/Mips16FrameLowering.cpp b/llvm/lib/Target/Mips/Mips16FrameLowering.cpp
index 71c2bdba2f9..7994c61fcdd 100644
--- a/llvm/lib/Target/Mips/Mips16FrameLowering.cpp
+++ b/llvm/lib/Target/Mips/Mips16FrameLowering.cpp
@@ -36,13 +36,17 @@ void Mips16FrameLowering::emitPrologue(MachineFunction &MF,
                                        MachineBasicBlock &MBB) const {
   assert(&MF.front() == &MBB && "Shrink-wrapping not yet supported");
   MachineFrameInfo *MFI = MF.getFrameInfo();
-  const Mips16InstrInfo &TII =
-      *static_cast<const Mips16InstrInfo *>(STI.getInstrInfo());
-  MachineBasicBlock::iterator MBBI = MBB.begin();
-  DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
-  uint64_t StackSize = MFI->getStackSize();
-
-  // No need to allocate space on the stack.
+  const Mips16InstrInfo &TII =
+      *static_cast<const Mips16InstrInfo *>(STI.getInstrInfo());
+  MachineBasicBlock::iterator MBBI = MBB.begin();
+
+  // Debug location must be unknown since the first debug location is used
+  // to determine the end of the prologue.
+  DebugLoc dl;
+
+  uint64_t StackSize = MFI->getStackSize();
+
+  // No need to allocate space on the stack.
   if (StackSize == 0 && !MFI->adjustsStack()) return;
 
   MachineModuleInfo &MMI = MF.getMMI();