103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
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//===- LegacyPassManager.h - Legacy Container for Passes --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the legacy PassManager class. This class is used to hold,
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// maintain, and optimize execution of Passes. The PassManager class ensures
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// that analysis results are available before a pass runs, and that Pass's are
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// destroyed when the PassManager is destroyed.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_LEGACYPASSMANAGER_H
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#define LLVM_IR_LEGACYPASSMANAGER_H
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#include "llvm/Pass.h"
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#include "llvm/Support/CBindingWrapping.h"
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namespace llvm {
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class Pass;
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class Module;
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namespace legacy {
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class PassManagerImpl;
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class FunctionPassManagerImpl;
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/// PassManagerBase - An abstract interface to allow code to add passes to
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/// a pass manager without having to hard-code what kind of pass manager
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/// it is.
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class PassManagerBase {
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public:
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virtual ~PassManagerBase();
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/// Add a pass to the queue of passes to run. This passes ownership of
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/// the Pass to the PassManager. When the PassManager is destroyed, the pass
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/// will be destroyed as well, so there is no need to delete the pass. This
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/// may even destroy the pass right away if it is found to be redundant. This
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/// implies that all passes MUST be allocated with 'new'.
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virtual void add(Pass *P) = 0;
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};
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/// PassManager manages ModulePassManagers
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class PassManager : public PassManagerBase {
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public:
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PassManager();
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~PassManager() override;
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void add(Pass *P) override;
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/// run - Execute all of the passes scheduled for execution. Keep track of
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/// whether any of the passes modifies the module, and if so, return true.
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bool run(Module &M);
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private:
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/// PassManagerImpl_New is the actual class. PassManager is just the
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/// wraper to publish simple pass manager interface
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PassManagerImpl *PM;
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};
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/// FunctionPassManager manages FunctionPasses.
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class FunctionPassManager : public PassManagerBase {
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public:
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/// FunctionPassManager ctor - This initializes the pass manager. It needs,
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/// but does not take ownership of, the specified Module.
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explicit FunctionPassManager(Module *M);
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~FunctionPassManager() override;
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void add(Pass *P) override;
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/// run - Execute all of the passes scheduled for execution. Keep
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/// track of whether any of the passes modifies the function, and if
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/// so, return true.
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///
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bool run(Function &F);
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/// doInitialization - Run all of the initializers for the function passes.
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///
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bool doInitialization();
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/// doFinalization - Run all of the finalizers for the function passes.
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///
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bool doFinalization();
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private:
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FunctionPassManagerImpl *FPM;
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Module *M;
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};
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} // End legacy namespace
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// Create wrappers for C Binding types (see CBindingWrapping.h).
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DEFINE_STDCXX_CONVERSION_FUNCTIONS(legacy::PassManagerBase, LLVMPassManagerRef)
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} // End llvm namespace
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#endif
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