//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
+// This file was developed by Devang Patel and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/PassManager.h"
-#include "llvm/Function.h"
#include "llvm/Module.h"
+#include <vector>
+#include <set>
using namespace llvm;
-// PassManagerAnalysisHelper implementation
+namespace llvm {
-/// Return TRUE IFF pass P's required analysis set does not required new
+/// CommonPassManagerImpl helps pass manager analysis required by
+/// the managed passes. It provides methods to add/remove analysis
+/// available and query if certain analysis is available or not.
+class CommonPassManagerImpl : public Pass {
+
+public:
+
+ /// Return true IFF pass P's required analysis set does not required new
+ /// manager.
+ bool manageablePass(Pass *P);
+
+ /// Return true IFF AnalysisID AID is currently available.
+ bool isAnalysisAvailable(AnalysisID AID) {
+ return (AvailableAnalysis.count(AID) != 0);
+ }
+
+ /// Augment RequiredAnalysis by adding analysis required by pass P.
+ void noteDownRequiredAnalysis(Pass *P);
+
+ /// Augment AvailableAnalysis by adding analysis made available by pass P.
+ void noteDownAvailableAnalysis(Pass *P);
+
+ /// Remove Analysis that is not preserved by the pass
+ void removeNotPreservedAnalysis(Pass *P);
+
+ /// Remove dead passes
+ void removeDeadPasses() { /* TODO : Implement */ }
+
+ /// Add pass P into the PassVector. Update RequiredAnalysis and
+ /// AvailableAnalysis appropriately if ProcessAnalysis is true.
+ void addPassToManager (Pass *P, bool ProcessAnalysis = true);
+
+ inline std::vector<Pass *>::iterator passVectorBegin() {
+ return PassVector.begin();
+ }
+
+ inline std::vector<Pass *>::iterator passVectorEnd() {
+ return PassVector.end();
+ }
+
+private:
+ // Analysis required by the passes managed by this manager
+ std::vector<AnalysisID> RequiredAnalysis;
+
+ // set of available Analysis
+ std::set<AnalysisID> AvailableAnalysis;
+
+ // Collection of pass that are managed by this manager
+ std::vector<Pass *> PassVector;
+};
+
+/// BasicBlockPassManager_New manages BasicBlockPass. It batches all the
+/// pass together and sequence them to process one basic block before
+/// processing next basic block.
+class BasicBlockPassManager_New : public CommonPassManagerImpl {
+
+public:
+ BasicBlockPassManager_New() { }
+
+ /// Add a pass into a passmanager queue.
+ bool addPass(Pass *p);
+
+ /// Execute all of the passes scheduled for execution. Keep track of
+ /// whether any of the passes modifies the function, and if so, return true.
+ bool runOnFunction(Function &F);
+
+ /// Return true IFF AnalysisID AID is currently available.
+ bool analysisCurrentlyAvailable(AnalysisID AID);
+
+private:
+};
+
+/// FunctionPassManagerImpl_New manages FunctionPasses and BasicBlockPassManagers.
+/// It batches all function passes and basic block pass managers together and
+/// sequence them to process one function at a time before processing next
+/// function.
+class FunctionPassManagerImpl_New : public CommonPassManagerImpl {
+public:
+ FunctionPassManagerImpl_New(ModuleProvider *P) { /* TODO */ }
+ FunctionPassManagerImpl_New() {
+ activeBBPassManager = NULL;
+ }
+ ~FunctionPassManagerImpl_New() { /* TODO */ };
+
+ /// add - Add a pass to the queue of passes to run. This passes
+ /// ownership of the Pass to the PassManager. When the
+ /// PassManager_X is destroyed, the pass will be destroyed as well, so
+ /// there is no need to delete the pass. (TODO delete passes.)
+ /// This implies that all passes MUST be allocated with 'new'.
+ void add(Pass *P) { /* TODO*/ }
+
+ /// Add pass into the pass manager queue.
+ bool addPass(Pass *P);
+
+ /// Execute all of the passes scheduled for execution. Keep
+ /// track of whether any of the passes modifies the function, and if
+ /// so, return true.
+ bool runOnModule(Module &M);
+
+ /// Return true IFF AnalysisID AID is currently available.
+ bool analysisCurrentlyAvailable(AnalysisID AID);
+
+private:
+ // Active Pass Managers
+ BasicBlockPassManager_New *activeBBPassManager;
+};
+
+/// ModulePassManager_New manages ModulePasses and function pass managers.
+/// It batches all Module passes passes and function pass managers together and
+/// sequence them to process one module.
+class ModulePassManager_New : public CommonPassManagerImpl {
+
+public:
+ ModulePassManager_New() { activeFunctionPassManager = NULL; }
+
+ /// Add a pass into a passmanager queue.
+ bool addPass(Pass *p);
+
+ /// run - Execute all of the passes scheduled for execution. Keep track of
+ /// whether any of the passes modifies the module, and if so, return true.
+ bool runOnModule(Module &M);
+
+ /// Return true IFF AnalysisID AID is currently available.
+ bool analysisCurrentlyAvailable(AnalysisID AID);
+
+private:
+ // Active Pass Manager
+ FunctionPassManagerImpl_New *activeFunctionPassManager;
+};
+
+/// PassManager_New manages ModulePassManagers
+class PassManagerImpl_New : public CommonPassManagerImpl {
+
+public:
+
+ /// 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
+ /// will be destroyed as well, so there is no need to delete the pass. This
+ /// implies that all passes MUST be allocated with 'new'.
+ void add(Pass *P);
+
+ /// run - Execute all of the passes scheduled for execution. Keep track of
+ /// whether any of the passes modifies the module, and if so, return true.
+ bool run(Module &M);
+
+ /// Return true IFF AnalysisID AID is currently available.
+ bool analysisCurrentlyAvailable(AnalysisID AID);
+
+private:
+
+ /// Add a pass into a passmanager queue. This is used by schedulePasses
+ bool addPass(Pass *p);
+
+ /// Schedule pass P for execution. Make sure that passes required by
+ /// P are run before P is run. Update analysis info maintained by
+ /// the manager. Remove dead passes. This is a recursive function.
+ void schedulePass(Pass *P);
+
+ /// Schedule all passes collected in pass queue using add(). Add all the
+ /// schedule passes into various manager's queue using addPass().
+ void schedulePasses();
+
+ // Collection of pass managers
+ std::vector<ModulePassManager_New *> PassManagers;
+
+ // Active Pass Manager
+ ModulePassManager_New *activeManager;
+};
+
+} // End of llvm namespace
+
+// CommonPassManagerImpl implementation
+
+/// Return true IFF pass P's required analysis set does not required new
/// manager.
-bool PassManagerAnalysisHelper::manageablePass(Pass *P) {
+bool CommonPassManagerImpl::manageablePass(Pass *P) {
AnalysisUsage AnUsage;
P->getAnalysisUsage(AnUsage);
- // If this pass is not preserving information that is required by the other passes
- // managed by this manager then use new manager
- // TODO
+ // If this pass is not preserving information that is required by the other
+ // passes managed by this manager then use new manager
+ if (!AnUsage.getPreservesAll()) {
+ const std::vector<AnalysisID> &PreservedSet = AnUsage.getPreservedSet();
+ for (std::vector<AnalysisID>::iterator I = RequiredAnalysis.begin(),
+ E = RequiredAnalysis.end(); I != E; ++I) {
+ if (std::find(PreservedSet.begin(), PreservedSet.end(), *I) ==
+ PreservedSet.end())
+ // This analysis is not preserved. Need new manager.
+ return false;
+ }
+ }
return true;
}
-/// Return TRUE iff AnalysisID AID is currently available.
-bool PassManagerAnalysisHelper::analysisCurrentlyAvailable(AnalysisID AID) {
+/// Augment RequiredAnalysis by adding analysis required by pass P.
+void CommonPassManagerImpl::noteDownRequiredAnalysis(Pass *P) {
+ AnalysisUsage AnUsage;
+ P->getAnalysisUsage(AnUsage);
+ const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet();
- // TODO
- return false;
+ // FIXME: What about duplicates ?
+ RequiredAnalysis.insert(RequiredAnalysis.end(), RequiredSet.begin(),
+ RequiredSet.end());
}
-/// Augment RequiredSet by adding analysis required by pass P.
-void PassManagerAnalysisHelper::noteDownRequiredAnalysis(Pass *P) {
+/// Augement AvailableAnalysis by adding analysis made available by pass P.
+void CommonPassManagerImpl::noteDownAvailableAnalysis(Pass *P) {
+
+ if (const PassInfo *PI = P->getPassInfo()) {
+ AvailableAnalysis.insert(PI);
+
+ //TODO This pass is the current implementation of all of the interfaces it
+ //TODO implements as well.
+ //TODO
+ //TODO const std::vector<const PassInfo*> &II = PI->getInterfacesImplemented();
+ //TODO for (unsigned i = 0, e = II.size(); i != e; ++i)
+ //TODO CurrentAnalyses[II[i]] = P;
+ }
+}
- // TODO
+/// Remove Analyss not preserved by Pass P
+void CommonPassManagerImpl::removeNotPreservedAnalysis(Pass *P) {
+ AnalysisUsage AnUsage;
+ P->getAnalysisUsage(AnUsage);
+ const std::vector<AnalysisID> &PreservedSet = AnUsage.getPreservedSet();
+
+ for (std::set<AnalysisID>::iterator I = AvailableAnalysis.begin(),
+ E = AvailableAnalysis.end(); I != E; ++I ) {
+ if (std::find(PreservedSet.begin(), PreservedSet.end(), *I) ==
+ PreservedSet.end()) {
+ // Remove this analysis
+ std::set<AnalysisID>::iterator J = I++;
+ AvailableAnalysis.erase(J);
+ }
+ }
}
-/// Remove AnalysisID from the RequiredSet
-void PassManagerAnalysisHelper::removeAnalysis(AnalysisID AID) {
+/// Add pass P into the PassVector. Update RequiredAnalysis and
+/// AvailableAnalysis appropriately if ProcessAnalysis is true.
+void CommonPassManagerImpl::addPassToManager (Pass *P,
+ bool ProcessAnalysis) {
- // TODO
-}
+ if (ProcessAnalysis) {
+ // Take a note of analysis required and made available by this pass
+ noteDownRequiredAnalysis(P);
+ noteDownAvailableAnalysis(P);
-/// Remove Analyss not preserved by Pass P
-void PassManagerAnalysisHelper::removeNotPreservedAnalysis(Pass *P) {
+ // Remove the analysis not preserved by this pass
+ removeNotPreservedAnalysis(P);
+ }
- // TODO
+ // Add pass
+ PassVector.push_back(P);
}
/// BasicBlockPassManager implementation
-/// Add pass P into PassVector and return TRUE. If this pass is not
-/// manageable by this manager then return FALSE.
+/// Add pass P into PassVector and return true. If this pass is not
+/// manageable by this manager then return false.
bool
-BasicBlockPassManager_New::addPass (Pass *P) {
+BasicBlockPassManager_New::addPass(Pass *P) {
BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
if (!BP)
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
- if (!manageablePass (P))
+ if (!manageablePass(P))
return false;
- // Take a note of analysis required by this pass.
- noteDownRequiredAnalysis(P);
+ addPassToManager (BP);
- // Add pass
- PassVector.push_back(BP);
return true;
}
bool Changed = false;
for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
- for (std::vector<Pass *>::iterator itr = PassVector.begin(),
- e = PassVector.end(); itr != e; ++itr) {
+ for (std::vector<Pass *>::iterator itr = passVectorBegin(),
+ e = passVectorEnd(); itr != e; ++itr) {
Pass *P = *itr;
BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
Changed |= BP->runOnBasicBlock(*I);
return Changed;
}
+/// Return true IFF AnalysisID AID is currently available.
+bool BasicBlockPassManager_New::analysisCurrentlyAvailable(AnalysisID AID) {
+ return isAnalysisAvailable(AID);
+}
+
// FunctionPassManager_New implementation
+/// Create new Function pass manager
+FunctionPassManager_New::FunctionPassManager_New() {
+ FPM = new FunctionPassManagerImpl_New();
+}
+
+/// add - Add a pass to the queue of passes to run. This passes
+/// ownership of the Pass to the PassManager. When the
+/// PassManager_X is destroyed, the pass will be destroyed as well, so
+/// there is no need to delete the pass. (TODO delete passes.)
+/// This implies that all passes MUST be allocated with 'new'.
+void
+FunctionPassManager_New::add(Pass *P) {
+ FPM->add(P);
+}
+
+/// Execute all of the passes scheduled for execution. Keep
+/// track of whether any of the passes modifies the function, and if
+/// so, return true.
+bool
+FunctionPassManager_New::runOnModule(Module &M) {
+ return FPM->runOnModule(M);
+}
+
+// FunctionPassManagerImpl_New implementation
-///////////////////////////////////////////////////////////////////////////////
// FunctionPassManager
/// Add pass P into the pass manager queue. If P is a BasicBlockPass then
/// either use it into active basic block pass manager or create new basic
/// block pass manager to handle pass P.
bool
-FunctionPassManager_New::addPass (Pass *P) {
+FunctionPassManagerImpl_New::addPass(Pass *P) {
// If P is a BasicBlockPass then use BasicBlockPassManager_New.
if (BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P)) {
|| !activeBBPassManager->addPass(BP)) {
activeBBPassManager = new BasicBlockPassManager_New();
-
- PassVector.push_back(activeBBPassManager);
- assert (!activeBBPassManager->addPass(BP) &&
- "Unable to add Pass");
+ addPassToManager(activeBBPassManager, false);
+ if (!activeBBPassManager->addPass(BP))
+ assert(0 && "Unable to add Pass");
}
return true;
}
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
- if (!manageablePass (P))
+ if (!manageablePass(P))
return false;
- // Take a note of analysis required by this pass.
- noteDownRequiredAnalysis(P);
-
- PassVector.push_back(FP);
+ addPassToManager (FP);
activeBBPassManager = NULL;
return true;
}
/// runOnFunction method. Keep track of whether any of the passes modifies
/// the function, and if so, return true.
bool
-FunctionPassManager_New::runOnModule(Module &M) {
+FunctionPassManagerImpl_New::runOnModule(Module &M) {
bool Changed = false;
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- for (std::vector<Pass *>::iterator itr = PassVector.begin(),
- e = PassVector.end(); itr != e; ++itr) {
+ for (std::vector<Pass *>::iterator itr = passVectorBegin(),
+ e = passVectorEnd(); itr != e; ++itr) {
Pass *P = *itr;
FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
Changed |= FP->runOnFunction(*I);
return Changed;
}
+/// Return true IFF AnalysisID AID is currently available.
+bool FunctionPassManagerImpl_New::analysisCurrentlyAvailable(AnalysisID AID) {
+
+ if (isAnalysisAvailable(AID))
+ return true;
+
+ if (activeBBPassManager &&
+ activeBBPassManager->isAnalysisAvailable(AID))
+ return true;
+
+ // TODO : Check inactive managers
+ return false;
+}
// ModulePassManager implementation
/// Add P into pass vector if it is manageble. If P is a FunctionPass
-/// then use FunctionPassManager_New to manage it. Return FALSE if P
+/// then use FunctionPassManagerImpl_New to manage it. Return false if P
/// is not manageable by this manager.
bool
-ModulePassManager_New::addPass (Pass *P) {
+ModulePassManager_New::addPass(Pass *P) {
// If P is FunctionPass then use function pass maanager.
if (FunctionPass *FP = dynamic_cast<FunctionPass*>(P)) {
if (!activeFunctionPassManager
|| !activeFunctionPassManager->addPass(P)) {
- activeFunctionPassManager = new FunctionPassManager_New();
-
- PassVector.push_back(activeFunctionPassManager);
- assert (!activeFunctionPassManager->addPass(FP) &&
- "Unable to add Pass");
+ activeFunctionPassManager = new FunctionPassManagerImpl_New();
+ addPassToManager(activeFunctionPassManager, false);
+ if (!activeFunctionPassManager->addPass(FP))
+ assert(0 && "Unable to add pass");
}
return true;
}
// If this pass does not preserve anlysis that is used by other passes
// managed by this manager than it is not a suiable pass for this manager.
- if (!manageablePass (P))
+ if (!manageablePass(P))
return false;
- // Take a note of analysis required by this pass.
- noteDownRequiredAnalysis(P);
-
- PassVector.push_back(MP);
+ addPassToManager(MP);
activeFunctionPassManager = NULL;
return true;
}
bool
ModulePassManager_New::runOnModule(Module &M) {
bool Changed = false;
- for (std::vector<Pass *>::iterator itr = PassVector.begin(),
- e = PassVector.end(); itr != e; ++itr) {
+ for (std::vector<Pass *>::iterator itr = passVectorBegin(),
+ e = passVectorEnd(); itr != e; ++itr) {
Pass *P = *itr;
ModulePass *MP = dynamic_cast<ModulePass*>(P);
Changed |= MP->runOnModule(M);
return Changed;
}
+/// Return true IFF AnalysisID AID is currently available.
+bool ModulePassManager_New::analysisCurrentlyAvailable(AnalysisID AID) {
+
+ if (isAnalysisAvailable(AID))
+ return true;
+
+ if (activeFunctionPassManager &&
+ activeFunctionPassManager->isAnalysisAvailable(AID))
+ return true;
+
+ // TODO : Check inactive managers
+ return false;
+}
+
+/// Return true IFF AnalysisID AID is currently available.
+bool PassManagerImpl_New::analysisCurrentlyAvailable(AnalysisID AID) {
+
+ bool available = false;
+ for (std::vector<ModulePassManager_New *>::iterator itr = PassManagers.begin(),
+ e = PassManagers.end(); !available && itr != e; ++itr)
+ available = (*itr)->analysisCurrentlyAvailable(AID);
+ return available;
+}
+
+/// Schedule pass P for execution. Make sure that passes required by
+/// P are run before P is run. Update analysis info maintained by
+/// the manager. Remove dead passes. This is a recursive function.
+void PassManagerImpl_New::schedulePass(Pass *P) {
+
+ AnalysisUsage AnUsage;
+ P->getAnalysisUsage(AnUsage);
+ const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet();
+ for (std::vector<AnalysisID>::const_iterator I = RequiredSet.begin(),
+ E = RequiredSet.end(); I != E; ++I) {
+
+ if (!analysisCurrentlyAvailable(*I)) {
+ // Schedule this analysis run first.
+ Pass *AP = (*I)->createPass();
+ schedulePass(AP);
+ }
+ }
+
+ addPass(P);
+
+ // TODO : Walk through all managers and remove not preserved analysis
+ // TODO : remove dead passes
+}
+
/// Schedule all passes from the queue by adding them in their
/// respective manager's queue.
-void
-PassManager_New::schedulePasses() {
- /* TODO */
+void PassManagerImpl_New::schedulePasses() {
+ for (std::vector<Pass *>::iterator I = passVectorBegin(),
+ E = passVectorEnd(); I != E; ++I)
+ schedulePass (*I);
}
/// Add pass P to the queue of passes to run.
-void
-PassManager_New::add(Pass *P) {
- /* TODO */
+void PassManagerImpl_New::add(Pass *P) {
+ // Do not process Analysis now. Analysis is process while scheduling
+ // the pass vector.
+ addPassToManager(P, false);
}
// PassManager_New implementation
/// Add P into active pass manager or use new module pass manager to
/// manage it.
-bool
-PassManager_New::addPass (Pass *P) {
+bool PassManagerImpl_New::addPass(Pass *P) {
- if (!activeManager) {
+ if (!activeManager || !activeManager->addPass(P)) {
activeManager = new ModulePassManager_New();
PassManagers.push_back(activeManager);
}
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
-bool
-PassManager_New::run(Module &M) {
+bool PassManagerImpl_New::run(Module &M) {
schedulePasses();
bool Changed = false;
}
return Changed;
}
+
+/// Create new pass manager
+PassManager_New::PassManager_New() {
+ PM = new PassManagerImpl_New();
+}
+
+/// 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
+/// will be destroyed as well, so there is no need to delete the pass. This
+/// implies that all passes MUST be allocated with 'new'.
+void
+PassManager_New::add(Pass *P) {
+ PM->add(P);
+}
+
+/// run - Execute all of the passes scheduled for execution. Keep track of
+/// whether any of the passes modifies the module, and if so, return true.
+bool
+PassManager_New::run(Module &M) {
+ return PM->run(M);
+}
+
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