From 8061e8645f4ac96b5a4826abf6ab4dde9cb5c3ea Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Fri, 11 Sep 2015 08:20:56 +0000
Subject: [PATCH] PPCFrameLowering::emitEpilogue(): Avoid manipulating MBBI on
 iterator end.

It caused crash in MachineInstr::hasPropertyInBundle() since r247237.

llvm-svn: 247395
---
 llvm/lib/Target/PowerPC/PPCFrameLowering.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
index 60da158b058c..db49dfd8539f 100644
--- a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
@@ -999,7 +999,7 @@ void PPCFrameLowering::emitEpilogue(MachineFunction &MF,
     PBPOffset = FFI->getObjectOffset(PBPIndex);
   }
 
-  bool IsReturnBlock = MBBI->isReturn();
+  bool IsReturnBlock = (MBBI != MBB.end() && MBBI->isReturn());
   
   if (IsReturnBlock) {
     unsigned RetOpcode = MBBI->getOpcode();