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Add missing null check reported by Amaury Pouly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110649 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-08-10 02:39:45 +00:00
parent fcfcca1d9b
commit c120af4567
1 changed files with 3 additions and 2 deletions
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5
lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
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@ -59,8 +59,9 @@ SUnit *ScheduleDAGSDNodes::NewSUnit(SDNode *N) {
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);