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-rw-r--r--lib/CodeGen/SimpleRegisterCoalescing.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index cca891d773..c6d4576e9c 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -464,7 +464,7 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt,
MachineOperand &MO = CopyMI->getOperand(i);
if (MO.isReg() && MO.isImplicit())
NewMI->addOperand(MO);
- if (MO.isDef()) {
+ if (MO.isDef() && li_->hasInterval(MO.getReg())) {
unsigned Reg = MO.getReg();
DLR = li_->getInterval(Reg).getLiveRangeContaining(DefIdx);
if (DLR && DLR->valno->copy == CopyMI)