X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FPassManager.cpp;h=4335757a5093ca7f81c83fae037ba51b064161d2;hb=2625f9b2e4388a957286063f6c7fe5406fd0ca7a;hp=af3cfb025dca290520a9ffbf6a2eb9b24c2b525a;hpb=b42295df4da77a34519d0c49840a8b997d3f0b7c;p=oota-llvm.git diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp index af3cfb025dc..4335757a509 100644 --- a/lib/VMCore/PassManager.cpp +++ b/lib/VMCore/PassManager.cpp @@ -2,8 +2,8 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by Devang Patel and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // @@ -19,9 +19,13 @@ #include "llvm/ModuleProvider.h" #include "llvm/Support/Streams.h" #include "llvm/Support/ManagedStatic.h" +#include "llvm/Analysis/Dominators.h" +#include "llvm-c/Core.h" #include +#include #include #include +using namespace llvm; // See PassManagers.h for Pass Manager infrastructure overview. @@ -39,6 +43,11 @@ enum PassDebugLevel { None, Arguments, Structure, Executions, Details }; +bool VerifyDomInfo = false; +static cl::opt +VerifyDomInfoX("verify-dom-info", cl::location(VerifyDomInfo), + cl::desc("Verify dominator info (time consuming)")); + static cl::opt PassDebugging("debug-pass", cl::Hidden, cl::desc("Print PassManager debugging information"), @@ -64,8 +73,8 @@ class VISIBILITY_HIDDEN BBPassManager : public PMDataManager, public: static char ID; - BBPassManager(int Depth) - : PMDataManager(Depth), FunctionPass((intptr_t)&ID) {} + explicit BBPassManager(int Depth) + : PMDataManager(Depth), FunctionPass(&ID) {} /// Execute all of the passes scheduled for execution. Keep track of /// whether any of the passes modifies the function, and if so, return true. @@ -82,7 +91,7 @@ public: bool doFinalization(Function &F); virtual const char *getPassName() const { - return "BasicBlock Pass Manager"; + return "BasicBlock Pass Manager"; } // Print passes managed by this manager @@ -120,8 +129,8 @@ class FunctionPassManagerImpl : public Pass, public PMTopLevelManager { public: static char ID; - FunctionPassManagerImpl(int Depth) : - Pass((intptr_t)&ID), PMDataManager(Depth), + explicit FunctionPassManagerImpl(int Depth) : + Pass(&ID), PMDataManager(Depth), PMTopLevelManager(TLM_Function) { } /// add - Add a pass to the queue of passes to run. This passes ownership of @@ -140,7 +149,7 @@ public: /// bool doInitialization(Module &M); - /// doFinalization - Run all of the initializers for the function passes. + /// doFinalization - Run all of the finalizers for the function passes. /// bool doFinalization(Module &M); @@ -178,13 +187,14 @@ char FunctionPassManagerImpl::ID = 0; // MPPassManager // /// MPPassManager manages ModulePasses and function pass managers. -/// It batches all Module passes passes and function pass managers together and -/// sequence them to process one module. +/// It batches all Module passes and function pass managers together and +/// sequences them to process one module. class MPPassManager : public Pass, public PMDataManager { public: static char ID; - MPPassManager(int Depth) : Pass((intptr_t)&ID), PMDataManager(Depth) { } + explicit MPPassManager(int Depth) : + Pass(&ID), PMDataManager(Depth) { } // Delete on the fly managers. virtual ~MPPassManager() { @@ -259,8 +269,8 @@ class PassManagerImpl : public Pass, public: static char ID; - PassManagerImpl(int Depth) : Pass((intptr_t)&ID), PMDataManager(Depth), - PMTopLevelManager(TLM_Pass) { } + explicit PassManagerImpl(int Depth) : + Pass(&ID), PMDataManager(Depth), PMTopLevelManager(TLM_Pass) { } /// add - Add a pass to the queue of passes to run. This passes ownership of /// the Pass to the PassManager. When the PassManager is destroyed, the pass @@ -356,10 +366,10 @@ public: } }; -static TimingInfo *TheTimeInfo; - } // End of anon namespace +static TimingInfo *TheTimeInfo; + //===----------------------------------------------------------------------===// // PMTopLevelManager implementation @@ -381,10 +391,10 @@ PMTopLevelManager::PMTopLevelManager (enum TopLevelManagerType t) { } /// Set pass P as the last user of the given analysis passes. -void PMTopLevelManager::setLastUser(std::vector &AnalysisPasses, +void PMTopLevelManager::setLastUser(SmallVector &AnalysisPasses, Pass *P) { - for (std::vector::iterator I = AnalysisPasses.begin(), + for (SmallVector::iterator I = AnalysisPasses.begin(), E = AnalysisPasses.end(); I != E; ++I) { Pass *AP = *I; LastUser[AP] = P; @@ -394,21 +404,43 @@ void PMTopLevelManager::setLastUser(std::vector &AnalysisPasses, // If AP is the last user of other passes then make P last user of // such passes. - for (std::map::iterator LUI = LastUser.begin(), + for (DenseMap::iterator LUI = LastUser.begin(), LUE = LastUser.end(); LUI != LUE; ++LUI) { if (LUI->second == AP) + // DenseMap iterator is not invalidated here because + // this is just updating exisitng entry. LastUser[LUI->first] = P; } } } /// Collect passes whose last user is P -void PMTopLevelManager::collectLastUses(std::vector &LastUses, - Pass *P) { - for (std::map::iterator LUI = LastUser.begin(), - LUE = LastUser.end(); LUI != LUE; ++LUI) - if (LUI->second == P) - LastUses.push_back(LUI->first); +void PMTopLevelManager::collectLastUses(SmallVector &LastUses, + Pass *P) { + DenseMap >::iterator DMI = + InversedLastUser.find(P); + if (DMI == InversedLastUser.end()) + return; + + SmallPtrSet &LU = DMI->second; + for (SmallPtrSet::iterator I = LU.begin(), + E = LU.end(); I != E; ++I) { + LastUses.push_back(*I); + } + +} + +AnalysisUsage *PMTopLevelManager::findAnalysisUsage(Pass *P) { + AnalysisUsage *AnUsage = NULL; + DenseMap::iterator DMI = AnUsageMap.find(P); + if (DMI != AnUsageMap.end()) + AnUsage = DMI->second; + else { + AnUsage = new AnalysisUsage(); + P->getAnalysisUsage(*AnUsage); + AnUsageMap[P] = AnUsage; + } + return AnUsage; } /// Schedule pass P for execution. Make sure that passes required by @@ -422,22 +454,45 @@ void PMTopLevelManager::schedulePass(Pass *P) { // Give pass a chance to prepare the stage. P->preparePassManager(activeStack); - AnalysisUsage AnUsage; - P->getAnalysisUsage(AnUsage); - const std::vector &RequiredSet = AnUsage.getRequiredSet(); - for (std::vector::const_iterator I = RequiredSet.begin(), - E = RequiredSet.end(); I != E; ++I) { - - Pass *AnalysisPass = findAnalysisPass(*I); - if (!AnalysisPass) { - AnalysisPass = (*I)->createPass(); - // Schedule this analysis run first only if it is not a lower level - // analysis pass. Lower level analsyis passes are run on the fly. - if (P->getPotentialPassManagerType () >= - AnalysisPass->getPotentialPassManagerType()) - schedulePass(AnalysisPass); - else - delete AnalysisPass; + // If P is an analysis pass and it is available then do not + // generate the analysis again. Stale analysis info should not be + // available at this point. + if (P->getPassInfo() && + P->getPassInfo()->isAnalysis() && findAnalysisPass(P->getPassInfo())) { + delete P; + return; + } + + AnalysisUsage *AnUsage = findAnalysisUsage(P); + + bool checkAnalysis = true; + while (checkAnalysis) { + checkAnalysis = false; + + const AnalysisUsage::VectorType &RequiredSet = AnUsage->getRequiredSet(); + for (AnalysisUsage::VectorType::const_iterator I = RequiredSet.begin(), + E = RequiredSet.end(); I != E; ++I) { + + Pass *AnalysisPass = findAnalysisPass(*I); + if (!AnalysisPass) { + AnalysisPass = (*I)->createPass(); + if (P->getPotentialPassManagerType () == + AnalysisPass->getPotentialPassManagerType()) + // Schedule analysis pass that is managed by the same pass manager. + schedulePass(AnalysisPass); + else if (P->getPotentialPassManagerType () > + AnalysisPass->getPotentialPassManagerType()) { + // Schedule analysis pass that is managed by a new manager. + schedulePass(AnalysisPass); + // Recheck analysis passes to ensure that required analysises that + // are already checked are still available. + checkAnalysis = true; + } + else + // Do not schedule this analysis. Lower level analsyis + // passes are run on the fly. + delete AnalysisPass; + } } } @@ -452,19 +507,18 @@ Pass *PMTopLevelManager::findAnalysisPass(AnalysisID AID) { Pass *P = NULL; // Check pass managers - for (std::vector::iterator I = PassManagers.begin(), + for (SmallVector::iterator I = PassManagers.begin(), E = PassManagers.end(); P == NULL && I != E; ++I) { - PMDataManager *PMD = dynamic_cast(*I); - assert(PMD && "This is not a PassManager"); + PMDataManager *PMD = *I; P = PMD->findAnalysisPass(AID, false); } // Check other pass managers - for (std::vector::iterator I = IndirectPassManagers.begin(), + for (SmallVector::iterator I = IndirectPassManagers.begin(), E = IndirectPassManagers.end(); P == NULL && I != E; ++I) P = (*I)->findAnalysisPass(AID, false); - for (std::vector::iterator I = ImmutablePasses.begin(), + for (SmallVector::iterator I = ImmutablePasses.begin(), E = ImmutablePasses.end(); P == NULL && I != E; ++I) { const PassInfo *PI = (*I)->getPassInfo(); if (PI == AID) @@ -472,7 +526,8 @@ Pass *PMTopLevelManager::findAnalysisPass(AnalysisID AID) { // If Pass not found then check the interfaces implemented by Immutable Pass if (!P) { - const std::vector &ImmPI = PI->getInterfacesImplemented(); + const std::vector &ImmPI = + PI->getInterfacesImplemented(); if (std::find(ImmPI.begin(), ImmPI.end(), AID) != ImmPI.end()) P = *I; } @@ -492,9 +547,13 @@ void PMTopLevelManager::dumpPasses() const { ImmutablePasses[i]->dumpPassStructure(0); } - for (std::vector::const_iterator I = PassManagers.begin(), + // Every class that derives from PMDataManager also derives from Pass + // (sometimes indirectly), but there's no inheritance relationship + // between PMDataManager and Pass, so we have to dynamic_cast to get + // from a PMDataManager* to a Pass*. + for (SmallVector::const_iterator I = PassManagers.begin(), E = PassManagers.end(); I != E; ++I) - (*I)->dumpPassStructure(1); + dynamic_cast(*I)->dumpPassStructure(1); } void PMTopLevelManager::dumpArguments() const { @@ -503,10 +562,9 @@ void PMTopLevelManager::dumpArguments() const { return; cerr << "Pass Arguments: "; - for (std::vector::const_iterator I = PassManagers.begin(), + for (SmallVector::const_iterator I = PassManagers.begin(), E = PassManagers.end(); I != E; ++I) { - PMDataManager *PMD = dynamic_cast(*I); - assert(PMD && "This is not a PassManager"); + PMDataManager *PMD = *I; PMD->dumpPassArguments(); } cerr << "\n"; @@ -514,49 +572,52 @@ void PMTopLevelManager::dumpArguments() const { void PMTopLevelManager::initializeAllAnalysisInfo() { - for (std::vector::iterator I = PassManagers.begin(), + for (SmallVector::iterator I = PassManagers.begin(), E = PassManagers.end(); I != E; ++I) { - PMDataManager *PMD = dynamic_cast(*I); - assert(PMD && "This is not a PassManager"); + PMDataManager *PMD = *I; PMD->initializeAnalysisInfo(); } // Initailize other pass managers - for (std::vector::iterator I = IndirectPassManagers.begin(), + for (SmallVector::iterator I = IndirectPassManagers.begin(), E = IndirectPassManagers.end(); I != E; ++I) (*I)->initializeAnalysisInfo(); + + for(DenseMap::iterator DMI = LastUser.begin(), + DME = LastUser.end(); DMI != DME; ++DMI) { + DenseMap >::iterator InvDMI = + InversedLastUser.find(DMI->second); + if (InvDMI != InversedLastUser.end()) { + SmallPtrSet &L = InvDMI->second; + L.insert(DMI->first); + } else { + SmallPtrSet L; L.insert(DMI->first); + InversedLastUser[DMI->second] = L; + } + } } /// Destructor PMTopLevelManager::~PMTopLevelManager() { - for (std::vector::iterator I = PassManagers.begin(), + for (SmallVector::iterator I = PassManagers.begin(), E = PassManagers.end(); I != E; ++I) delete *I; - for (std::vector::iterator + for (SmallVector::iterator I = ImmutablePasses.begin(), E = ImmutablePasses.end(); I != E; ++I) delete *I; - - PassManagers.clear(); + + for (DenseMap::iterator DMI = AnUsageMap.begin(), + DME = AnUsageMap.end(); DMI != DME; ++DMI) { + AnalysisUsage *AU = DMI->second; + delete AU; + } + } //===----------------------------------------------------------------------===// // PMDataManager implementation -/// Return true IFF pass P's required analysis set does not required new -/// manager. -bool PMDataManager::manageablePass(Pass *P) { - - // TODO - // If this pass is not preserving information that is required by a - // pass maintained by higher level pass manager then do not insert - // this pass into current manager. Use new manager. For example, - // For example, If FunctionPass F is not preserving ModulePass Info M1 - // that is used by another ModulePass M2 then do not insert F in - // current function pass manager. - return true; -} - /// Augement AvailableAnalysis by adding analysis made available by pass P. void PMDataManager::recordAvailableAnalysis(Pass *P) { @@ -575,18 +636,18 @@ void PMDataManager::recordAvailableAnalysis(Pass *P) { // passes managed by this manager bool PMDataManager::preserveHigherLevelAnalysis(Pass *P) { - AnalysisUsage AnUsage; - P->getAnalysisUsage(AnUsage); + AnalysisUsage *AnUsage = TPM->findAnalysisUsage(P); - if (AnUsage.getPreservesAll()) + if (AnUsage->getPreservesAll()) return true; - const std::vector &PreservedSet = AnUsage.getPreservedSet(); - for (std::vector::iterator I = HigherLevelAnalysis.begin(), + const AnalysisUsage::VectorType &PreservedSet = AnUsage->getPreservedSet(); + for (SmallVector::iterator I = HigherLevelAnalysis.begin(), E = HigherLevelAnalysis.end(); I != E; ++I) { Pass *P1 = *I; - if (!dynamic_cast(P1) - && std::find(PreservedSet.begin(), PreservedSet.end(), P1->getPassInfo()) == + if (!dynamic_cast(P1) && + std::find(PreservedSet.begin(), PreservedSet.end(), + P1->getPassInfo()) == PreservedSet.end()) return false; } @@ -594,23 +655,85 @@ bool PMDataManager::preserveHigherLevelAnalysis(Pass *P) { return true; } -/// Remove Analyss not preserved by Pass P -void PMDataManager::removeNotPreservedAnalysis(Pass *P) { - AnalysisUsage AnUsage; - P->getAnalysisUsage(AnUsage); +/// verifyPreservedAnalysis -- Verify analysis preserved by pass P. +void PMDataManager::verifyPreservedAnalysis(Pass *P) { + // Don't do this unless assertions are enabled. +#ifdef NDEBUG + return; +#endif + AnalysisUsage *AnUsage = TPM->findAnalysisUsage(P); + const AnalysisUsage::VectorType &PreservedSet = AnUsage->getPreservedSet(); + + // Verify preserved analysis + for (AnalysisUsage::VectorType::const_iterator I = PreservedSet.begin(), + E = PreservedSet.end(); I != E; ++I) { + AnalysisID AID = *I; + if (Pass *AP = findAnalysisPass(AID, true)) + AP->verifyAnalysis(); + } +} - if (AnUsage.getPreservesAll()) +/// verifyDomInfo - Verify dominator information if it is available. +void PMDataManager::verifyDomInfo(Pass &P, Function &F) { + + if (!VerifyDomInfo || !P.getResolver()) return; - const std::vector &PreservedSet = AnUsage.getPreservedSet(); + DominatorTree *DT = P.getAnalysisIfAvailable(); + if (!DT) + return; + + DominatorTree OtherDT; + OtherDT.getBase().recalculate(F); + if (DT->compare(OtherDT)) { + cerr << "Dominator Information for " << F.getNameStart() << "\n"; + cerr << "Pass '" << P.getPassName() << "'\n"; + cerr << "----- Valid -----\n"; + OtherDT.dump(); + cerr << "----- Invalid -----\n"; + DT->dump(); + assert (0 && "Invalid dominator info"); + } + + DominanceFrontier *DF = P.getAnalysisIfAvailable(); + if (!DF) + return; + + DominanceFrontier OtherDF; + std::vector DTRoots = DT->getRoots(); + OtherDF.calculate(*DT, DT->getNode(DTRoots[0])); + if (DF->compare(OtherDF)) { + cerr << "Dominator Information for " << F.getNameStart() << "\n"; + cerr << "Pass '" << P.getPassName() << "'\n"; + cerr << "----- Valid -----\n"; + OtherDF.dump(); + cerr << "----- Invalid -----\n"; + DF->dump(); + assert (0 && "Invalid dominator info"); + } +} + +/// Remove Analysis not preserved by Pass P +void PMDataManager::removeNotPreservedAnalysis(Pass *P) { + AnalysisUsage *AnUsage = TPM->findAnalysisUsage(P); + if (AnUsage->getPreservesAll()) + return; + + const AnalysisUsage::VectorType &PreservedSet = AnUsage->getPreservedSet(); for (std::map::iterator I = AvailableAnalysis.begin(), E = AvailableAnalysis.end(); I != E; ) { std::map::iterator Info = I++; if (!dynamic_cast(Info->second) && std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) == - PreservedSet.end()) + PreservedSet.end()) { // Remove this analysis + if (PassDebugging >= Details) { + Pass *S = Info->second; + cerr << " -- '" << P->getPassName() << "' is not preserving '"; + cerr << S->getPassName() << "'\n"; + } AvailableAnalysis.erase(Info); + } } // Check inherited analysis also. If P is not preserving analysis @@ -624,21 +747,20 @@ void PMDataManager::removeNotPreservedAnalysis(Pass *P) { I = InheritedAnalysis[Index]->begin(), E = InheritedAnalysis[Index]->end(); I != E; ) { std::map::iterator Info = I++; - if (!dynamic_cast(Info->second) - && std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) == + if (!dynamic_cast(Info->second) && + std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) == PreservedSet.end()) // Remove this analysis InheritedAnalysis[Index]->erase(Info); } } - } /// Remove analysis passes that are not used any longer -void PMDataManager::removeDeadPasses(Pass *P, std::string Msg, +void PMDataManager::removeDeadPasses(Pass *P, const char *Msg, enum PassDebuggingString DBG_STR) { - std::vector DeadPasses; + SmallVector DeadPasses; // If this is a on the fly manager then it does not have TPM. if (!TPM) @@ -646,7 +768,13 @@ void PMDataManager::removeDeadPasses(Pass *P, std::string Msg, TPM->collectLastUses(DeadPasses, P); - for (std::vector::iterator I = DeadPasses.begin(), + if (PassDebugging >= Details && !DeadPasses.empty()) { + cerr << " -*- '" << P->getPassName(); + cerr << "' is the last user of following pass instances."; + cerr << " Free these instances\n"; + } + + for (SmallVector::iterator I = DeadPasses.begin(), E = DeadPasses.end(); I != E; ++I) { dumpPassInfo(*I, FREEING_MSG, DBG_STR, Msg); @@ -654,13 +782,23 @@ void PMDataManager::removeDeadPasses(Pass *P, std::string Msg, if (TheTimeInfo) TheTimeInfo->passStarted(*I); (*I)->releaseMemory(); if (TheTimeInfo) TheTimeInfo->passEnded(*I); - - std::map::iterator Pos = - AvailableAnalysis.find((*I)->getPassInfo()); - - // It is possible that pass is already removed from the AvailableAnalysis - if (Pos != AvailableAnalysis.end()) - AvailableAnalysis.erase(Pos); + if (const PassInfo *PI = (*I)->getPassInfo()) { + std::map::iterator Pos = + AvailableAnalysis.find(PI); + + // It is possible that pass is already removed from the AvailableAnalysis + if (Pos != AvailableAnalysis.end()) + AvailableAnalysis.erase(Pos); + + // Remove all interfaces this pass implements, for which it is also + // listed as the available implementation. + const std::vector &II = PI->getInterfacesImplemented(); + for (unsigned i = 0, e = II.size(); i != e; ++i) { + Pos = AvailableAnalysis.find(II[i]); + if (Pos != AvailableAnalysis.end() && Pos->second == *I) + AvailableAnalysis.erase(Pos); + } + } } } @@ -676,12 +814,12 @@ void PMDataManager::add(Pass *P, // If a FunctionPass F is the last user of ModulePass info M // then the F's manager, not F, records itself as a last user of M. - std::vector TransferLastUses; + SmallVector TransferLastUses; if (ProcessAnalysis) { // At the moment, this pass is the last user of all required passes. - std::vector LastUses; + SmallVector LastUses; SmallVector RequiredPasses; SmallVector ReqAnalysisNotAvailable; @@ -694,6 +832,7 @@ void PMDataManager::add(Pass *P, Pass *PRequired = *I; unsigned RDepth = 0; + assert (PRequired->getResolver() && "Analysis Resolver is not set"); PMDataManager &DM = PRequired->getResolver()->getPMDataManager(); RDepth = DM.getDepth(); @@ -746,10 +885,9 @@ void PMDataManager::add(Pass *P, void PMDataManager::collectRequiredAnalysis(SmallVector&RP, SmallVector &RP_NotAvail, Pass *P) { - AnalysisUsage AnUsage; - P->getAnalysisUsage(AnUsage); - const std::vector &RequiredSet = AnUsage.getRequiredSet(); - for (std::vector::const_iterator + AnalysisUsage *AnUsage = TPM->findAnalysisUsage(P); + const AnalysisUsage::VectorType &RequiredSet = AnUsage->getRequiredSet(); + for (AnalysisUsage::VectorType::const_iterator I = RequiredSet.begin(), E = RequiredSet.end(); I != E; ++I) { AnalysisID AID = *I; @@ -759,8 +897,8 @@ void PMDataManager::collectRequiredAnalysis(SmallVector&RP, RP_NotAvail.push_back(AID); } - const std::vector &IDs = AnUsage.getRequiredTransitiveSet(); - for (std::vector::const_iterator I = IDs.begin(), + const AnalysisUsage::VectorType &IDs = AnUsage->getRequiredTransitiveSet(); + for (AnalysisUsage::VectorType::const_iterator I = IDs.begin(), E = IDs.end(); I != E; ++I) { AnalysisID AID = *I; if (Pass *AnalysisPass = findAnalysisPass(*I, true)) @@ -776,18 +914,18 @@ void PMDataManager::collectRequiredAnalysis(SmallVector&RP, // implementations it needs. // void PMDataManager::initializeAnalysisImpl(Pass *P) { - AnalysisUsage AnUsage; - P->getAnalysisUsage(AnUsage); - - for (std::vector::const_iterator - I = AnUsage.getRequiredSet().begin(), - E = AnUsage.getRequiredSet().end(); I != E; ++I) { + AnalysisUsage *AnUsage = TPM->findAnalysisUsage(P); + + for (AnalysisUsage::VectorType::const_iterator + I = AnUsage->getRequiredSet().begin(), + E = AnUsage->getRequiredSet().end(); I != E; ++I) { Pass *Impl = findAnalysisPass(*I, true); if (Impl == 0) // This may be analysis pass that is initialized on the fly. // If that is not the case then it will raise an assert when it is used. continue; AnalysisResolver *AR = P->getResolver(); + assert (AR && "Analysis Resolver is not set"); AR->addAnalysisImplsPair(*I, Impl); } } @@ -812,7 +950,7 @@ Pass *PMDataManager::findAnalysisPass(AnalysisID AID, bool SearchParent) { // Print list of passes that are last used by P. void PMDataManager::dumpLastUses(Pass *P, unsigned Offset) const{ - std::vector LUses; + SmallVector LUses; // If this is a on the fly manager then it does not have TPM. if (!TPM) @@ -820,7 +958,7 @@ void PMDataManager::dumpLastUses(Pass *P, unsigned Offset) const{ TPM->collectLastUses(LUses, P); - for (std::vector::iterator I = LUses.begin(), + for (SmallVector::iterator I = LUses.begin(), E = LUses.end(); I != E; ++I) { llvm::cerr << "--" << std::string(Offset*2, ' '); (*I)->dumpPassStructure(0); @@ -828,7 +966,7 @@ void PMDataManager::dumpLastUses(Pass *P, unsigned Offset) const{ } void PMDataManager::dumpPassArguments() const { - for(std::vector::const_iterator I = PassVector.begin(), + for(SmallVector::const_iterator I = PassVector.begin(), E = PassVector.end(); I != E; ++I) { if (PMDataManager *PMD = dynamic_cast(*I)) PMD->dumpPassArguments(); @@ -839,9 +977,9 @@ void PMDataManager::dumpPassArguments() const { } } -void PMDataManager:: dumpPassInfo(Pass *P, enum PassDebuggingString S1, - enum PassDebuggingString S2, - std::string Msg) { +void PMDataManager::dumpPassInfo(Pass *P, enum PassDebuggingString S1, + enum PassDebuggingString S2, + const char *Msg) { if (PassDebugging < Executions) return; cerr << (void*)this << std::string(getDepth()*2+1, ' '); @@ -879,33 +1017,79 @@ void PMDataManager:: dumpPassInfo(Pass *P, enum PassDebuggingString S1, } } -void PMDataManager::dumpAnalysisSetInfo(const char *Msg, Pass *P, - const std::vector &Set) +void PMDataManager::dumpRequiredSet(const Pass *P) const { - if (PassDebugging >= Details && !Set.empty()) { - cerr << (void*)P << std::string(getDepth()*2+3, ' ') << Msg << " Analyses:"; - for (unsigned i = 0; i != Set.size(); ++i) { - if (i) cerr << ","; - cerr << " " << Set[i]->getPassName(); - } - cerr << "\n"; - } + if (PassDebugging < Details) + return; + + AnalysisUsage analysisUsage; + P->getAnalysisUsage(analysisUsage); + dumpAnalysisUsage("Required", P, analysisUsage.getRequiredSet()); +} + +void PMDataManager::dumpPreservedSet(const Pass *P) + const { + if (PassDebugging < Details) + return; + + AnalysisUsage analysisUsage; + P->getAnalysisUsage(analysisUsage); + dumpAnalysisUsage("Preserved", P, analysisUsage.getPreservedSet()); +} + +void PMDataManager::dumpAnalysisUsage(const char *Msg, const Pass *P, + const AnalysisUsage::VectorType &Set) + const { + assert(PassDebugging >= Details); + if (Set.empty()) + return; + cerr << (void*)P << std::string(getDepth()*2+3, ' ') << Msg << " Analyses:"; + for (unsigned i = 0; i != Set.size(); ++i) { + if (i) cerr << ","; + cerr << " " << Set[i]->getPassName(); + } + cerr << "\n"; +} + +/// Add RequiredPass into list of lower level passes required by pass P. +/// RequiredPass is run on the fly by Pass Manager when P requests it +/// through getAnalysis interface. +/// This should be handled by specific pass manager. +void PMDataManager::addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass) { + if (TPM) { + TPM->dumpArguments(); + TPM->dumpPasses(); + } + + // Module Level pass may required Function Level analysis info + // (e.g. dominator info). Pass manager uses on the fly function pass manager + // to provide this on demand. In that case, in Pass manager terminology, + // module level pass is requiring lower level analysis info managed by + // lower level pass manager. + + // When Pass manager is not able to order required analysis info, Pass manager + // checks whether any lower level manager will be able to provide this + // analysis info on demand or not. +#ifndef NDEBUG + cerr << "Unable to schedule '" << RequiredPass->getPassName(); + cerr << "' required by '" << P->getPassName() << "'\n"; +#endif + assert (0 && "Unable to schedule pass"); } // Destructor PMDataManager::~PMDataManager() { - for (std::vector::iterator I = PassVector.begin(), + for (SmallVector::iterator I = PassVector.begin(), E = PassVector.end(); I != E; ++I) delete *I; - PassVector.clear(); } //===----------------------------------------------------------------------===// // NOTE: Is this the right place to define this method ? -// getAnalysisToUpdate - Return an analysis result or null if it doesn't exist -Pass *AnalysisResolver::getAnalysisToUpdate(AnalysisID ID, bool dir) const { +// getAnalysisIfAvailable - Return analysis result or null if it doesn't exist. +Pass *AnalysisResolver::getAnalysisIfAvailable(AnalysisID ID, bool dir) const { return PM.findAnalysisPass(ID, dir); } @@ -931,11 +1115,9 @@ BBPassManager::runOnFunction(Function &F) { for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { BasicBlockPass *BP = getContainedPass(Index); - AnalysisUsage AnUsage; - BP->getAnalysisUsage(AnUsage); - dumpPassInfo(BP, EXECUTION_MSG, ON_BASICBLOCK_MSG, (*I).getName()); - dumpAnalysisSetInfo("Required", BP, AnUsage.getRequiredSet()); + dumpPassInfo(BP, EXECUTION_MSG, ON_BASICBLOCK_MSG, I->getNameStart()); + dumpRequiredSet(BP); initializeAnalysisImpl(BP); @@ -944,19 +1126,21 @@ BBPassManager::runOnFunction(Function &F) { if (TheTimeInfo) TheTimeInfo->passEnded(BP); if (Changed) - dumpPassInfo(BP, MODIFICATION_MSG, ON_BASICBLOCK_MSG, (*I).getName()); - dumpAnalysisSetInfo("Preserved", BP, AnUsage.getPreservedSet()); + dumpPassInfo(BP, MODIFICATION_MSG, ON_BASICBLOCK_MSG, + I->getNameStart()); + dumpPreservedSet(BP); + verifyPreservedAnalysis(BP); removeNotPreservedAnalysis(BP); recordAvailableAnalysis(BP); - removeDeadPasses(BP, (*I).getName(), ON_BASICBLOCK_MSG); - + removeDeadPasses(BP, I->getNameStart(), ON_BASICBLOCK_MSG); } + return Changed |= doFinalization(F); } // Implement doInitialization and doFinalization -inline bool BBPassManager::doInitialization(Module &M) { +bool BBPassManager::doInitialization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -967,7 +1151,7 @@ inline bool BBPassManager::doInitialization(Module &M) { return Changed; } -inline bool BBPassManager::doFinalization(Module &M) { +bool BBPassManager::doFinalization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -978,7 +1162,7 @@ inline bool BBPassManager::doFinalization(Module &M) { return Changed; } -inline bool BBPassManager::doInitialization(Function &F) { +bool BBPassManager::doInitialization(Function &F) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -989,7 +1173,7 @@ inline bool BBPassManager::doInitialization(Function &F) { return Changed; } -inline bool BBPassManager::doFinalization(Function &F) { +bool BBPassManager::doFinalization(Function &F) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -1010,8 +1194,7 @@ FunctionPassManager::FunctionPassManager(ModuleProvider *P) { // FPM is the top level manager. FPM->setTopLevelManager(FPM); - PMDataManager *PMD = dynamic_cast(FPM); - AnalysisResolver *AR = new AnalysisResolver(*PMD); + AnalysisResolver *AR = new AnalysisResolver(*FPM); FPM->setResolver(AR); MP = P; @@ -1050,7 +1233,7 @@ bool FunctionPassManager::doInitialization() { return FPM->doInitialization(*MP->getModule()); } -/// doFinalization - Run all of the initializers for the function passes. +/// doFinalization - Run all of the finalizers for the function passes. /// bool FunctionPassManager::doFinalization() { return FPM->doFinalization(*MP->getModule()); @@ -1059,7 +1242,7 @@ bool FunctionPassManager::doFinalization() { //===----------------------------------------------------------------------===// // FunctionPassManagerImpl implementation // -inline bool FunctionPassManagerImpl::doInitialization(Module &M) { +bool FunctionPassManagerImpl::doInitialization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index) { @@ -1070,7 +1253,7 @@ inline bool FunctionPassManagerImpl::doInitialization(Module &M) { return Changed; } -inline bool FunctionPassManagerImpl::doFinalization(Module &M) { +bool FunctionPassManagerImpl::doFinalization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index) { @@ -1124,15 +1307,15 @@ bool FPPassManager::runOnFunction(Function &F) { if (F.isDeclaration()) return false; + + // Collect inherited analysis from Module level pass manager. + populateInheritedAnalysis(TPM->activeStack); for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { FunctionPass *FP = getContainedPass(Index); - AnalysisUsage AnUsage; - FP->getAnalysisUsage(AnUsage); - - dumpPassInfo(FP, EXECUTION_MSG, ON_FUNCTION_MSG, F.getName()); - dumpAnalysisSetInfo("Required", FP, AnUsage.getRequiredSet()); + dumpPassInfo(FP, EXECUTION_MSG, ON_FUNCTION_MSG, F.getNameStart()); + dumpRequiredSet(FP); initializeAnalysisImpl(FP); @@ -1141,12 +1324,16 @@ bool FPPassManager::runOnFunction(Function &F) { if (TheTimeInfo) TheTimeInfo->passEnded(FP); if (Changed) - dumpPassInfo(FP, MODIFICATION_MSG, ON_FUNCTION_MSG, F.getName()); - dumpAnalysisSetInfo("Preserved", FP, AnUsage.getPreservedSet()); + dumpPassInfo(FP, MODIFICATION_MSG, ON_FUNCTION_MSG, F.getNameStart()); + dumpPreservedSet(FP); + verifyPreservedAnalysis(FP); removeNotPreservedAnalysis(FP); recordAvailableAnalysis(FP); - removeDeadPasses(FP, F.getName(), ON_FUNCTION_MSG); + removeDeadPasses(FP, F.getNameStart(), ON_FUNCTION_MSG); + + // If dominator information is available then verify the info if requested. + verifyDomInfo(*FP, F); } return Changed; } @@ -1161,7 +1348,7 @@ bool FPPassManager::runOnModule(Module &M) { return Changed |= doFinalization(M); } -inline bool FPPassManager::doInitialization(Module &M) { +bool FPPassManager::doInitialization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -1172,7 +1359,7 @@ inline bool FPPassManager::doInitialization(Module &M) { return Changed; } -inline bool FPPassManager::doFinalization(Module &M) { +bool FPPassManager::doFinalization(Module &M) { bool Changed = false; for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { @@ -1196,11 +1383,9 @@ MPPassManager::runOnModule(Module &M) { for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) { ModulePass *MP = getContainedPass(Index); - AnalysisUsage AnUsage; - MP->getAnalysisUsage(AnUsage); - - dumpPassInfo(MP, EXECUTION_MSG, ON_MODULE_MSG, M.getModuleIdentifier()); - dumpAnalysisSetInfo("Required", MP, AnUsage.getRequiredSet()); + dumpPassInfo(MP, EXECUTION_MSG, ON_MODULE_MSG, + M.getModuleIdentifier().c_str()); + dumpRequiredSet(MP); initializeAnalysisImpl(MP); @@ -1210,12 +1395,13 @@ MPPassManager::runOnModule(Module &M) { if (Changed) dumpPassInfo(MP, MODIFICATION_MSG, ON_MODULE_MSG, - M.getModuleIdentifier()); - dumpAnalysisSetInfo("Preserved", MP, AnUsage.getPreservedSet()); - + M.getModuleIdentifier().c_str()); + dumpPreservedSet(MP); + + verifyPreservedAnalysis(MP); removeNotPreservedAnalysis(MP); recordAvailableAnalysis(MP); - removeDeadPasses(MP, M.getModuleIdentifier(), ON_MODULE_MSG); + removeDeadPasses(MP, M.getModuleIdentifier().c_str(), ON_MODULE_MSG); } return Changed; } @@ -1242,7 +1428,7 @@ void MPPassManager::addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass) { FPP->add(RequiredPass); // Register P as the last user of RequiredPass. - std::vector LU; + SmallVector LU; LU.push_back(RequiredPass); FPP->setLastUser(LU, P); } @@ -1362,10 +1548,9 @@ void PMStack::pop() { } // Push PM on the stack and set its top level manager. -void PMStack::push(Pass *P) { +void PMStack::push(PMDataManager *PM) { PMDataManager *Top = NULL; - PMDataManager *PM = dynamic_cast(P); assert (PM && "Unable to push. Pass Manager expected"); if (this->empty()) { @@ -1388,10 +1573,10 @@ void PMStack::dump() { for(std::deque::iterator I = S.begin(), E = S.end(); I != E; ++I) { Pass *P = dynamic_cast(*I); - printf ("%s ", P->getPassName()); + printf("%s ", P->getPassName()); } if (!S.empty()) - printf ("\n"); + printf("\n"); } /// Find appropriate Module Pass Manager in the PM Stack and @@ -1409,7 +1594,7 @@ void ModulePass::assignPassManager(PMStack &PMS, else break; } - + assert(!PMS.empty() && "Unable to find appropriate Pass Manager"); PMS.top()->add(this); } @@ -1418,7 +1603,7 @@ void ModulePass::assignPassManager(PMStack &PMS, void FunctionPass::assignPassManager(PMStack &PMS, PassManagerType PreferredType) { - // Find Module Pass Manager (TODO : Or Call Graph Pass Manager) + // Find Module Pass Manager while(!PMS.empty()) { if (PMS.top()->getPassManagerType() > PMT_FunctionPassManager) PMS.pop(); @@ -1434,6 +1619,7 @@ void FunctionPass::assignPassManager(PMStack &PMS, // [1] Create new Function Pass Manager FPP = new FPPassManager(PMD->getDepth() + 1); + FPP->populateInheritedAnalysis(PMS); // [2] Set up new manager's top level manager PMTopLevelManager *TPM = PMD->getTopLevelManager(); @@ -1441,14 +1627,7 @@ void FunctionPass::assignPassManager(PMStack &PMS, // [3] Assign manager to manage this new manager. This may create // and push new managers into PMS - Pass *P = dynamic_cast(FPP); - - // If Call Graph Pass Manager is active then use it to manage - // this new Function Pass manager. - if (PMD->getPassManagerType() == PMT_CallGraphPassManager) - P->assignPassManager(PMS, PMT_CallGraphPassManager); - else - P->assignPassManager(PMS); + FPP->assignPassManager(PMS, PMD->getPassManagerType()); // [4] Push new manager into PMS PMS.push(FPP); @@ -1467,9 +1646,8 @@ void BasicBlockPass::assignPassManager(PMStack &PMS, // Basic Pass Manager is a leaf pass manager. It does not handle // any other pass manager. - if (!PMS.empty()) { + if (!PMS.empty()) BBP = dynamic_cast(PMS.top()); - } // If leaf manager is not Basic Block Pass manager then create new // basic Block Pass manager. @@ -1488,8 +1666,7 @@ void BasicBlockPass::assignPassManager(PMStack &PMS, // [3] Assign manager to manage this new manager. This may create // and push new managers into PMS - Pass *P = dynamic_cast(BBP); - P->assignPassManager(PMS); + BBP->assignPassManager(PMS); // [4] Push new manager into PMS PMS.push(BBP); @@ -1499,4 +1676,34 @@ void BasicBlockPass::assignPassManager(PMStack &PMS, BBP->add(this); } +PassManagerBase::~PassManagerBase() {} + +/*===-- C Bindings --------------------------------------------------------===*/ + +LLVMPassManagerRef LLVMCreatePassManager() { + return wrap(new PassManager()); +} + +LLVMPassManagerRef LLVMCreateFunctionPassManager(LLVMModuleProviderRef P) { + return wrap(new FunctionPassManager(unwrap(P))); +} +int LLVMRunPassManager(LLVMPassManagerRef PM, LLVMModuleRef M) { + return unwrap(PM)->run(*unwrap(M)); +} + +int LLVMInitializeFunctionPassManager(LLVMPassManagerRef FPM) { + return unwrap(FPM)->doInitialization(); +} + +int LLVMRunFunctionPassManager(LLVMPassManagerRef FPM, LLVMValueRef F) { + return unwrap(FPM)->run(*unwrap(F)); +} + +int LLVMFinalizeFunctionPassManager(LLVMPassManagerRef FPM) { + return unwrap(FPM)->doFinalization(); +} + +void LLVMDisposePassManager(LLVMPassManagerRef PM) { + delete unwrap(PM); +}