From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Fri, 11 Sep 2015 08:20:56 +0000 (+0000)
Subject: PPCFrameLowering::emitEpilogue(): Avoid manipulating MBBI on iterator end.
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=595af7ed8595ccf005efb087b5bb7d9a19e50e3b

PPCFrameLowering::emitEpilogue(): Avoid manipulating MBBI on iterator end.

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247395 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCFrameLowering.cpp b/lib/Target/PowerPC/PPCFrameLowering.cpp
index 60da158b058..db49dfd8539 100644
--- a/lib/Target/PowerPC/PPCFrameLowering.cpp
+++ b/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();