//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group 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.
//
//===----------------------------------------------------------------------===//
//
-// This file defines the PassManager class. This class is used to hold,
-// maintain, and optimize execution of Passes. The PassManager class ensures
-// that analysis results are available before a pass runs, and that Pass's are
-// destroyed when the PassManager is destroyed.
+// This is a legacy redirect header for the old PassManager. It is intended to
+// be used by clients that have not been converted to be aware of the new pass
+// management infrastructure being built for LLVM, which is every client
+// initially. Eventually this header (and the legacy management layer) will go
+// away, but we want to minimize changes to out-of-tree users of LLVM in the
+// interim.
+//
+// Note that this header *must not* be included into the same file as the new
+// pass management infrastructure is included. Things will break spectacularly.
+// If you are starting that conversion, you should switch to explicitly
+// including LegacyPassManager.h and using the legacy namespace.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_PASSMANAGER_H
#define LLVM_PASSMANAGER_H
-#include "llvm/Pass.h"
-#include <vector>
+#include "llvm/IR/LegacyPassManager.h"
namespace llvm {
-class Pass;
-class ModulePass;
-class Module;
-class ModuleProvider;
-class ModulePassManager;
-class FunctionPassManagerT;
-class BasicBlockPassManager;
-
-class PassManager {
- ModulePassManager *PM; // This is a straightforward Pimpl class
-public:
- PassManager();
- ~PassManager();
-
- /// 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);
-};
-
-class FunctionPass;
-class ImmutablePass;
-class Function;
-
-class FunctionPassManager {
- FunctionPassManagerT *PM; // This is a straightforward Pimpl class
- ModuleProvider *MP;
-public:
- FunctionPassManager(ModuleProvider *P);
- ~FunctionPassManager();
-
- /// add - Add a pass to the queue of passes to run. This passes
- /// ownership of the FunctionPass 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(FunctionPass *P);
-
- /// add - ImmutablePasses are not FunctionPasses, so we have a
- /// special hack to get them into a FunctionPassManager.
- ///
- void add(ImmutablePass *IP);
-
- /// doInitialization - Run all of the initializers for the function passes.
- ///
- bool doInitialization();
-
- /// run - 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 run(Function &F);
-
- /// doFinalization - Run all of the initializers for the function passes.
- ///
- bool doFinalization();
-};
-
-/// PassManagerAnalysisHelper 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 PassManagerAnalysisHelper {
-
-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 analysisCurrentlyAvailable(AnalysisID AID);
-
- /// Augment RequiredSet by adding analysis required by pass P.
- void noteDownRequiredAnalysis(Pass *P);
-
- /// Remove AnalysisID from the RequiredSet
- void removeAnalysis(AnalysisID AID);
-
- /// Remove Analysis that is not preserved by the pass
- void removeNotPreservedAnalysis(Pass *P);
-
- /// Remove dead passes
- void removeDeadPasses() { /* TODO : Implement */ }
-
-private:
- // Required set of analysis for the passes managed by this manager
- std::vector<AnalysisID> RequiredSet;
-};
-
-/// 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 Pass,
- public PassManagerAnalysisHelper {
-
-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);
-
-private:
- // Collection of pass that are managed by this manager
- std::vector<Pass *> PassVector;
-};
-
-/// FunctionPassManager_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 FunctionPassManager_New : public Pass,
- public PassManagerAnalysisHelper {
-public:
- FunctionPassManager_New(ModuleProvider *P) { /* TODO */ }
- FunctionPassManager_New() {
- activeBBPassManager = NULL;
- }
- ~FunctionPassManager_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);
-
-private:
- // Collection of pass that are manged by this manager
- std::vector<Pass *> PassVector;
-
- // 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 Pass,
- public PassManagerAnalysisHelper {
-
-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);
-
-private:
- // Collection of pass that are managed by this manager
- std::vector<Pass *> PassVector;
-
- // Active Pass Manager
- FunctionPassManager_New *activeFunctionPassManager;
-};
-
-/// PassManager_New manages ModulePassManagers
-class PassManager_New : public Pass,
- public PassManagerAnalysisHelper {
-
-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);
-
-private:
-
- /// Add a pass into a passmanager queue. This is used by schedulePasses
- bool addPass(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;
-
- // Collection of pass that are not yet scheduled
- std::vector<Pass *> PassVector;
-
- // Active Pass Manager
- ModulePassManager_New *activeManager;
-};
+// Pull these into the llvm namespace so that existing code that expects it
+// there can find it.
+using legacy::PassManagerBase;
+using legacy::PassManager;
+using legacy::FunctionPassManager;
-} // End llvm namespace
+}
#endif
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