[llvm-commits] [llvm] r110649 - /llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Aug  9 21:39:45 2010
New Revision: 110649

URL: http://llvm.org/viewvc/llvm-project?rev=110649&view=rev
Log:
Add missing null check reported by Amaury Pouly.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp?rev=110649&r1=110648&r2=110649&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp Mon Aug  9 21:39:45 2010
@@ -59,8 +59,9 @@
   SUnits.back().OrigNode = &SUnits.back();
   SUnit *SU = &SUnits.back();
   const TargetLowering &TLI = DAG->getTargetLoweringInfo();
-  if (N->isMachineOpcode() &&
-      N->getMachineOpcode() == TargetOpcode::IMPLICIT_DEF)
+  if (!N ||
+      (N->isMachineOpcode() &&
+       N->getMachineOpcode() == TargetOpcode::IMPLICIT_DEF))
     SU->SchedulingPref = Sched::None;
   else
     SU->SchedulingPref = TLI.getSchedulingPreference(N);