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

llvm-svn: 8191
This commit is contained in:
John Criswell 2003-08-28 21:43:17 +00:00
parent a289abfc82
commit a4b09fe071
1 changed files with 21 additions and 5 deletions
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26
llvm/lib/CodeGen/InstrSched/SchedGraph.cpp
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@ -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() {
// 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);
}
//
// 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() {
for (const_iterator I = begin(); I != end(); ++I)
delete I->second;
delete graphRoot;
delete graphLeaf;
}
void SchedGraph::dump() const {