Remember to clear the shadow kill flag at the same time as clearing the real

kill flag.

This could cause duplicate kill flags when the same register was used twice in a
continuous sequence of STRs.

There is no small test case. <rdar://problem/8218046>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112534 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index 46254fdee64cbe6eef8bf9cdaffb5e18915b3420..d1acacfb1d0eeec9dcd9e4b65bcc335b170a9dd7 100644 (file)
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -324,6 +324,7 @@ void ARMLoadStoreOpt::MergeOpsUpdate(MachineBasicBlock &MBB,
       if (KilledRegs.count(Reg)) {
         unsigned j = Killer[Reg];
         memOps[j].MBBI->getOperand(0).setIsKill(false);
+        memOps[j].isKill = false;
       }
     }
     MBB.erase(memOps[i].MBBI);