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Machine CSE was forgetting to clear some data structures.

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llvm-svn: 114222
This commit is contained in:
Evan Cheng 2010-09-17 21:59:42 +00:00
parent d2cf0742a4
commit 042ab036a2
1 changed files with 7 additions and 0 deletions
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7
lib/CodeGen/MachineCSE.cpp
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@ -54,6 +54,11 @@ namespace {
AU.addPreserved<MachineDominatorTree>();
}
virtual void releaseMemory() {
ScopeMap.clear();
Exps.clear();
}
private:
const unsigned LookAheadLimit;
typedef ScopedHashTableScope<MachineInstr*, unsigned,
@ -469,6 +474,8 @@ bool MachineCSE::PerformCSE(MachineDomTreeNode *Node) {
DenseMap<MachineDomTreeNode*, MachineDomTreeNode*> ParentMap;
DenseMap<MachineDomTreeNode*, unsigned> OpenChildren;
CurrVN = 0;
// Perform a DFS walk to determine the order of visit.
WorkList.push_back(Node);
do {