Index: llvm/lib/Target/AVR/AVRExpandPseudoInsts.cpp
===================================================================
--- llvm/lib/Target/AVR/AVRExpandPseudoInsts.cpp
+++ llvm/lib/Target/AVR/AVRExpandPseudoInsts.cpp
@@ -1733,8 +1733,9 @@
       .addReg(DstHiReg);
 
   // Move the sign bit to the C flag.
-  buildMI(MBB, MBBI, AVR::ADDRdRr).addReg(DstHiReg)
-      .addReg(DstHiReg, RegState::Define | getDeadRegState(DstIsDead))
+  buildMI(MBB, MBBI, AVR::ADDRdRr)
+      .addReg(DstHiReg, RegState::Define, getDeadRegState(DstIsDead))
+      .addReg(DstHiReg, getKillRegState(DstIsKill) | getDeadRegState(DstIsDead))
       .addReg(DstHiReg, getKillRegState(DstIsKill));
 
   // Set upper byte to 0 or -1.