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-rw-r--r--llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
index c8ff9558cc8..58c4b14af97 100644
--- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
@@ -104,8 +104,9 @@ void SystemZInstrInfo::splitMove(MachineBasicBlock::iterator MI,
MachineOperand &LowOffsetOp = MI->getOperand(2);
LowOffsetOp.setImm(LowOffsetOp.getImm() + 8);
- // Clear the kill flags for the base and index registers in the first
- // instruction.
+ // Clear the kill flags on the registers in the first instruction.
+ if (EarlierMI->getOperand(0).isReg() && EarlierMI->getOperand(0).isUse())
+ EarlierMI->getOperand(0).setIsKill(false);
EarlierMI->getOperand(1).setIsKill(false);
EarlierMI->getOperand(3).setIsKill(false);
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