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dfa5798f2b
Summary: Delete the BasicBlockPass and BasicBlockManager, all its dependencies and update documentation. The BasicBlockManager was improperly tested and found to be potentially broken, and was deprecated as of rL373254. In light of the switch to the new pass manager coming before the next release, this patch is a first cleanup of the LegacyPassManager. Reviewers: chandlerc, echristo Subscribers: mehdi_amini, sanjoy.google, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69121
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
//===- 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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