From 4d30f90e3593f7d8f3a795ac435423fed3c4aa89 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Mon, 30 Aug 2010 21:52:40 +0000
Subject: [PATCH] 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>

llvm-svn: 112534
---
 llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index 46254fdee64c..d1acacfb1d0e 100644
--- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/llvm/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);