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fix memleak by cleaning the global sets on pass exit

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes 2008-10-10 16:25:50 +00:00
parent 2312022972
commit 7cdd9ee088
1 changed files with 17 additions and 11 deletions
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28
lib/Transforms/Scalar/GVN.cpp
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@ -739,6 +739,7 @@ namespace {
bool performPRE(Function& F); bool performPRE(Function& F);
Value* lookupNumber(BasicBlock* BB, uint32_t num); Value* lookupNumber(BasicBlock* BB, uint32_t num);
bool mergeBlockIntoPredecessor(BasicBlock* BB); bool mergeBlockIntoPredecessor(BasicBlock* BB);
void cleanupGlobalSets();
}; };
char GVN::ID = 0; char GVN::ID = 0;
@ -1129,7 +1130,9 @@ bool GVN::runOnFunction(Function& F) {
changed |= PREChanged; changed |= PREChanged;
} }
} }
cleanupGlobalSets();
return changed; return changed;
} }
@ -1332,16 +1335,9 @@ bool GVN::performPRE(Function& F) {
// iterateOnFunction - Executes one iteration of GVN // iterateOnFunction - Executes one iteration of GVN
bool GVN::iterateOnFunction(Function &F) { bool GVN::iterateOnFunction(Function &F) {
// Clean out global sets from any previous functions DominatorTree &DT = getAnalysis<DominatorTree>();
VN.clear();
phiMap.clear(); cleanupGlobalSets();
for (DenseMap<BasicBlock*, ValueNumberScope*>::iterator
I = localAvail.begin(), E = localAvail.end(); I != E; ++I)
delete I->second;
localAvail.clear();
DominatorTree &DT = getAnalysis<DominatorTree>();
// Top-down walk of the dominator tree // Top-down walk of the dominator tree
bool changed = false; bool changed = false;
@ -1351,3 +1347,13 @@ bool GVN::iterateOnFunction(Function &F) {
return changed; return changed;
} }
void GVN::cleanupGlobalSets() {
VN.clear();
phiMap.clear();
for (DenseMap<BasicBlock*, ValueNumberScope*>::iterator
I = localAvail.begin(), E = localAvail.end(); I != E; ++I)
delete I->second;
localAvail.clear();
}