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Fixed two double free bugs that caused llc to segfault or run forever.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8191 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell
2003-08-28 21:43:17 +00:00
parent b5d09bf4cc
commit c9afb499f6
2 changed files with 42 additions and 10 deletions
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26
lib/CodeGen/InstrSched/SchedGraph.cpp
View File

@ -53,10 +53,18 @@ SchedGraphNode::SchedGraphNode(unsigned NID, MachineBasicBlock *mbb,
} }
} }
//
// Method: SchedGraphNode Destructor
//
// Description:
// Free memory allocated by the SchedGraphNode object.
//
// Notes:
// Do not delete the edges here. The base class will take care of that.
// Only handle subclass specific stuff here (where currently there is
// none).
//
SchedGraphNode::~SchedGraphNode() { SchedGraphNode::~SchedGraphNode() {
// for each node, delete its out-edges
std::for_each(beginOutEdges(), endOutEdges(),
deleter<SchedGraphEdge>);
} }
// //
@ -67,11 +75,19 @@ SchedGraph::SchedGraph(MachineBasicBlock &mbb, const TargetMachine& target)
buildGraph(target); buildGraph(target);
} }
//
// Method: SchedGraph Destructor
//
// Description:
// This method deletes memory allocated by the SchedGraph object.
//
// Notes:
// Do not delete the graphRoot or graphLeaf here. The base class handles
// that bit of work.
//
SchedGraph::~SchedGraph() { SchedGraph::~SchedGraph() {
for (const_iterator I = begin(); I != end(); ++I) for (const_iterator I = begin(); I != end(); ++I)
delete I->second; delete I->second;
delete graphRoot;
delete graphLeaf;
} }
void SchedGraph::dump() const { void SchedGraph::dump() const {

26
lib/Target/SparcV9/InstrSched/SchedGraph.cpp
View File

@ -53,10 +53,18 @@ SchedGraphNode::SchedGraphNode(unsigned NID, MachineBasicBlock *mbb,
} }
} }
//
// Method: SchedGraphNode Destructor
//
// Description:
// Free memory allocated by the SchedGraphNode object.
//
// Notes:
// Do not delete the edges here. The base class will take care of that.
// Only handle subclass specific stuff here (where currently there is
// none).
//
SchedGraphNode::~SchedGraphNode() { SchedGraphNode::~SchedGraphNode() {
// for each node, delete its out-edges
std::for_each(beginOutEdges(), endOutEdges(),
deleter<SchedGraphEdge>);
} }
// //
@ -67,11 +75,19 @@ SchedGraph::SchedGraph(MachineBasicBlock &mbb, const TargetMachine& target)
buildGraph(target); buildGraph(target);
} }
//
// Method: SchedGraph Destructor
//
// Description:
// This method deletes memory allocated by the SchedGraph object.
//
// Notes:
// Do not delete the graphRoot or graphLeaf here. The base class handles
// that bit of work.
//
SchedGraph::~SchedGraph() { SchedGraph::~SchedGraph() {
for (const_iterator I = begin(); I != end(); ++I) for (const_iterator I = begin(); I != end(); ++I)
delete I->second; delete I->second;
delete graphRoot;
delete graphLeaf;
} }
void SchedGraph::dump() const { void SchedGraph::dump() const {