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Implement removeDeadPasses(). 

llvm-svn: 31722
This commit is contained in:
Devang Patel 2006-11-14 03:05:08 +00:00
parent 3f0832a3b5
commit ca1892699c
1 changed files with 23 additions and 4 deletions
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27
llvm/lib/VMCore/PassManager.cpp
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@ -53,7 +53,7 @@ public:
void removeNotPreservedAnalysis(Pass *P);
/// Remove dead passes
void removeDeadPasses() { /* TODO : Implement */ }
void removeDeadPasses(Pass *P);
/// Add pass P into the PassVector. Update RequiredAnalysis and
/// AvailableAnalysis appropriately if ProcessAnalysis is true.
@ -292,6 +292,25 @@ void CommonPassManagerImpl::removeNotPreservedAnalysis(Pass *P) {
}
}
/// Remove analysis passes that are not used any longer
void CommonPassManagerImpl::removeDeadPasses(Pass *P) {
for (std::map<Pass *, Pass *>::iterator I = LastUser.begin(),
E = LastUser.end(); I !=E; ++I) {
if (I->second == P) {
Pass *deadPass = I->first;
deadPass->releaseMemory();
std::map<AnalysisID, Pass*>::iterator Pos =
AvailableAnalysis.find(deadPass->getPassInfo());
assert (Pos != AvailableAnalysis.end() &&
"Pass is not available");
AvailableAnalysis.erase(Pos);
}
}
}
/// Add pass P into the PassVector. Update RequiredAnalysis and
/// AvailableAnalysis appropriately if ProcessAnalysis is true.
void CommonPassManagerImpl::addPassToManager (Pass *P,
@ -349,7 +368,7 @@ BasicBlockPassManager_New::runOnFunction(Function &F) {
BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
Changed |= BP->runOnBasicBlock(*I);
removeNotPreservedAnalysis(P);
removeDeadPasses();
removeDeadPasses(P);
}
return Changed;
}
@ -439,7 +458,7 @@ FunctionPassManagerImpl_New::runOnModule(Module &M) {
FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
Changed |= FP->runOnFunction(*I);
removeNotPreservedAnalysis(P);
removeDeadPasses();
removeDeadPasses(P);
}
return Changed;
}
@ -514,7 +533,7 @@ ModulePassManager_New::runOnModule(Module &M) {
ModulePass *MP = dynamic_cast<ModulePass*>(P);
Changed |= MP->runOnModule(M);
removeNotPreservedAnalysis(P);
removeDeadPasses();
removeDeadPasses(P);
}
return Changed;
}