From: Andrew Trick <atrick@apple.com>
Date: Fri, 25 Mar 2011 06:40:55 +0000 (+0000)
Subject: Fix for -pre-RA-sched=source.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=336298cf2cc68d9af163992b9f9cafddd4bb3c8a;p=oota-llvm.git

Fix for -pre-RA-sched=source.

Yet another case of unchecked NULL node (for physreg copy).
May fix PR9509.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128266 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index f02d78f6134..f5a5db89fa0 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -1500,6 +1500,8 @@ public:
   unsigned getNodePriority(const SUnit *SU) const;
 
   unsigned getNodeOrdering(const SUnit *SU) const {
+    if (!SU->getNode()) return 0;
+
     return scheduleDAG->DAG->GetOrdering(SU->getNode());
   }