From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Mon, 2 May 2016 17:29:55 +0000 (+0000)
Subject: ScheduleDAGInstrs.cpp: Don't peel the iterator when it points the end. This will... 
X-Git-Tag: llvmorg-3.9.0-rc1~7257
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bc46f624cdeb7f863c0c5b189658e78f27fd0dd7;p=platform%2Fupstream%2Fllvm.git

ScheduleDAGInstrs.cpp: Don't peel the iterator when it points the end. This will fix the crash in r268143.

llvm-svn: 268257
---

diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
index bcff1f6..34cebae 100644
--- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -825,7 +825,7 @@ void ScheduleDAGInstrs::insertBarrierChain(Value2SUsMap &map) {
     }
 
     // Remove also the BarrierChain from list if present.
-    if (*SUItr == BarrierChain)
+    if (SUItr != SUEE && *SUItr == BarrierChain)
       SUItr++;
 
     // Remove all SUs that are now successors of BarrierChain.