1 files changed, 3 insertions, 7 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 2e7e6f8b15..551866ee76 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -618,14 +618,10 @@ SimpleRegisterCoalescing::TrimLiveIntervalToLastUse(SlotIndex CopyIdx,
     // of last use.
     LastUse->setIsKill();
     removeRange(li, LastUseIdx.getDefIndex(), LR->end, li_, tri_);
-    if (LastUseMI->isCopy()) {
-      MachineOperand &DefMO = LastUseMI->getOperand(0);
-      if (DefMO.getReg() == li.reg && !DefMO.getSubReg())
-        DefMO.setIsDead();
-    }
     unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
-    if (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
-        DstReg == li.reg && DstSubIdx == 0) {
+    if ((LastUseMI->isCopy() && !LastUseMI->getOperand(0).getSubReg()) ||
+        (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
+         DstReg == li.reg && DstSubIdx == 0)) {
       // Last use is itself an identity code.
       int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg,
                                                          false, false, tri_);