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Fix a memory leak in LiveIntervalAnalysis.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53779 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-07-19 00:37:25 +00:00
parent 5a7fb69ac2
commit 1ed9922794
2 changed files with 13 additions and 11 deletions
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12
lib/CodeGen/LiveIntervalAnalysis.cpp
View File

@ -72,8 +72,11 @@ void LiveIntervals::releaseMemory() {
r2iMap_.clear();
// Release VNInfo memroy regions after all VNInfo objects are dtor'd.
VNInfoAllocator.Reset();
for (unsigned i = 0, e = ClonedMIs.size(); i != e; ++i)
mf_->DeleteMachineInstr(ClonedMIs[i]);
while (!ClonedMIs.empty()) {
MachineInstr *MI = ClonedMIs.back();
ClonedMIs.pop_back();
mf_->DeleteMachineInstr(MI);
}
}
void LiveIntervals::computeNumbering() {
@ -1586,8 +1589,9 @@ addIntervalsForSpills(const LiveInterval &li,
// Remember how to remat the def of this val#.
ReMatOrigDefs[VN] = ReMatDefMI;
// Original def may be modified so we have to make a copy here.
// FIXME: This is a memory leak. vrm should delete these!
ReMatDefs[VN] = mf_->CloneMachineInstr(ReMatDefMI);
MachineInstr *Clone = mf_->CloneMachineInstr(ReMatDefMI);
ClonedMIs.push_back(Clone);
ReMatDefs[VN] = Clone;
bool CanDelete = true;
if (VNI->hasPHIKill) {

12
lib/CodeGen/MachineInstr.cpp
View File

@ -312,16 +312,14 @@ MachineInstr::MachineInstr(MachineBasicBlock *MBB,
/// MachineInstr ctor - Copies MachineInstr arg exactly
///
MachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) {
TID = &MI.getDesc();
NumImplicitOps = MI.NumImplicitOps;
MachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI)
: TID(&MI.getDesc()), NumImplicitOps(0), Parent(0) {
Operands.reserve(MI.getNumOperands());
// Add operands
for (unsigned i = 0; i != MI.getNumOperands(); ++i) {
Operands.push_back(MI.getOperand(i));
Operands.back().ParentMI = this;
}
for (unsigned i = 0; i != MI.getNumOperands(); ++i)
addOperand(MI.getOperand(i));
NumImplicitOps = MI.NumImplicitOps;
// Add memory operands.
for (alist<MachineMemOperand>::const_iterator i = MI.memoperands_begin(),