Stop leaking RegScavengers from TailDuplication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158069 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp
index d077b09..a813fa6 100644
--- a/lib/CodeGen/TailDuplication.cpp
+++ b/lib/CodeGen/TailDuplication.cpp
@@ -28,6 +28,7 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/Statistic.h"
@@ -62,7 +63,7 @@
const TargetRegisterInfo *TRI;
MachineModuleInfo *MMI;
MachineRegisterInfo *MRI;
- RegScavenger *RS;
+ OwningPtr<RegScavenger> RS;
bool PreRegAlloc;
// SSAUpdateVRs - A list of virtual registers for which to update SSA form.
@@ -132,9 +133,9 @@
MRI = &MF.getRegInfo();
MMI = getAnalysisIfAvailable<MachineModuleInfo>();
PreRegAlloc = MRI->isSSA();
- RS = NULL;
+ RS.reset();
if (MRI->tracksLiveness() && TRI->trackLivenessAfterRegAlloc(MF))
- RS = new RegScavenger();
+ RS.reset(new RegScavenger());
bool MadeChange = false;
while (TailDuplicateBlocks(MF))