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-rw-r--r--lib/CodeGen/LiveIntervalAnalysis.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 7819640b6c..92c2634624 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -466,7 +466,7 @@ bool LiveIntervals::conflictsWithPhysRegDef(const LiveInterval &li,
continue;
if (MRegisterInfo::isVirtualRegister(PhysReg))
PhysReg = vrm.getPhys(PhysReg);
- if (mri_->regsOverlap(PhysReg, reg))
+ if (PhysReg && mri_->regsOverlap(PhysReg, reg))
return true;
}
}