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Stop leaking RegScavengers from TailDuplication.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158069 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-06-06 13:53:41 +00:00
parent c8f2fcc9a3
commit d14e4e133f
1 changed files with 4 additions and 3 deletions
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7
lib/CodeGen/TailDuplication.cpp
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@ -28,6 +28,7 @@
#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseSet.h" #include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallSet.h" #include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SetVector.h" #include "llvm/ADT/SetVector.h"
#include "llvm/ADT/Statistic.h" #include "llvm/ADT/Statistic.h"
@ -62,7 +63,7 @@ namespace {
const TargetRegisterInfo *TRI; const TargetRegisterInfo *TRI;
MachineModuleInfo *MMI; MachineModuleInfo *MMI;
MachineRegisterInfo *MRI; MachineRegisterInfo *MRI;
RegScavenger *RS; OwningPtr<RegScavenger> RS;
bool PreRegAlloc; bool PreRegAlloc;
// SSAUpdateVRs - A list of virtual registers for which to update SSA form. // SSAUpdateVRs - A list of virtual registers for which to update SSA form.
@ -132,9 +133,9 @@ bool TailDuplicatePass::runOnMachineFunction(MachineFunction &MF) {
MRI = &MF.getRegInfo(); MRI = &MF.getRegInfo();
MMI = getAnalysisIfAvailable<MachineModuleInfo>(); MMI = getAnalysisIfAvailable<MachineModuleInfo>();
PreRegAlloc = MRI->isSSA(); PreRegAlloc = MRI->isSSA();
RS = NULL; RS.reset();
if (MRI->tracksLiveness() && TRI->trackLivenessAfterRegAlloc(MF)) if (MRI->tracksLiveness() && TRI->trackLivenessAfterRegAlloc(MF))
RS = new RegScavenger(); RS.reset(new RegScavenger());
bool MadeChange = false; bool MadeChange = false;
while (TailDuplicateBlocks(MF)) while (TailDuplicateBlocks(MF))