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Update module pass manager to support module passes that require
function passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36154 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -195,6 +195,11 @@ public:
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/// through getAnalysis interface.
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virtual void addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass);
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/// Return function pass corresponding to PassInfo PI, that is
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/// required by module pass MP. Instantiate analysis pass, by using
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/// its runOnFunction() for function F.
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virtual Pass* getOnTheFlyPass(Pass *MP, const PassInfo *PI, Function &F);
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virtual const char *getPassName() const {
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return "Module Pass Manager";
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}
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@ -218,6 +223,11 @@ public:
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virtual PassManagerType getPassManagerType() const {
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return PMT_ModulePassManager;
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}
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private:
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/// Collection of on the fly FPPassManagers. These managers manage
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/// function passes that are required by module passes.
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std::map<Pass *, FPPassManager *> OnTheFlyManagers;
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};
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//===----------------------------------------------------------------------===//
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@ -614,6 +624,10 @@ void PMDataManager::removeDeadPasses(Pass *P, std::string Msg,
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enum PassDebuggingString DBG_STR) {
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std::vector<Pass *> DeadPasses;
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if (!TPM)
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return;
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TPM->collectLastUses(DeadPasses, P);
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for (std::vector<Pass *>::iterator I = DeadPasses.begin(),
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@ -678,14 +692,6 @@ void PMDataManager::add(Pass *P,
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assert (0 && "Unable to accomodate Required Pass");
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}
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// Now, take care of required analysises that are not available.
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for (SmallVector<AnalysisID, 8>::iterator
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I = ReqAnalysisNotAvailable.begin(),
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E = ReqAnalysisNotAvailable.end() ;I != E; ++I) {
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Pass *AnalysisPass = (*I)->createPass();
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this->addLowerLevelRequiredPass(P, AnalysisPass);
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}
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// Set P as P's last user until someone starts using P.
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// However, if P is a Pass Manager then it does not need
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// to record its last user.
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@ -699,6 +705,14 @@ void PMDataManager::add(Pass *P,
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TransferLastUses.clear();
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}
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// Now, take care of required analysises that are not available.
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for (SmallVector<AnalysisID, 8>::iterator
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I = ReqAnalysisNotAvailable.begin(),
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E = ReqAnalysisNotAvailable.end() ;I != E; ++I) {
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Pass *AnalysisPass = (*I)->createPass();
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this->addLowerLevelRequiredPass(P, AnalysisPass);
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}
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// Take a note of analysis required and made available by this pass.
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// Remove the analysis not preserved by this pass
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removeNotPreservedAnalysis(P);
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@ -1190,10 +1204,29 @@ void MPPassManager::addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass) {
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RequiredPass->getPotentialPassManagerType())
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&& "Unable to handle Pass that requires lower level Analysis pass");
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assert (0 &&
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"Unable to handle Pass that requires lower level Analysis pass");
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FPPassManager *FPP = OnTheFlyManagers[P];
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if (!FPP) {
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FPP = new FPPassManager(getDepth() + 1);
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OnTheFlyManagers[P] = FPP;
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}
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FPP->add(RequiredPass, false);
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}
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/// Return function pass corresponding to PassInfo PI, that is
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/// required by module pass MP. Instantiate analysis pass, by using
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/// its runOnFunction() for function F.
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Pass* MPPassManager::getOnTheFlyPass(Pass *MP, const PassInfo *PI,
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Function &F) {
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AnalysisID AID = PI;
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FPPassManager *FPP =OnTheFlyManagers[MP];
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assert (FPP && "Unable to find on the fly pass");
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FPP->runOnFunction(F);
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return FPP->findAnalysisPass(AID, false);
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}
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//===----------------------------------------------------------------------===//
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// PassManagerImpl implementation
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//
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