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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
//===- llvm/PassRegistry.h - Pass Information Registry ----------*- 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 PassRegistry, a class that is used in the initialization
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// and registration of passes. At application startup, passes are registered
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// with the PassRegistry, which is later provided to the PassManager for
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// dependency resolution and similar tasks.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PASSREGISTRY_H
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#define LLVM_PASSREGISTRY_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/CBindingWrapping.h"
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#include "llvm/Support/RWMutex.h"
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#include <memory>
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#include <vector>
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namespace llvm {
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class PassInfo;
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struct PassRegistrationListener;
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/// PassRegistry - This class manages the registration and intitialization of
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/// the pass subsystem as application startup, and assists the PassManager
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/// in resolving pass dependencies.
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/// NOTE: PassRegistry is NOT thread-safe. If you want to use LLVM on multiple
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/// threads simultaneously, you will need to use a separate PassRegistry on
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/// each thread.
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class PassRegistry {
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mutable sys::SmartRWMutex<true> Lock;
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/// PassInfoMap - Keep track of the PassInfo object for each registered pass.
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using MapType = DenseMap<const void *, const PassInfo *>;
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MapType PassInfoMap;
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using StringMapType = StringMap<const PassInfo *>;
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StringMapType PassInfoStringMap;
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std::vector<std::unique_ptr<const PassInfo>> ToFree;
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std::vector<PassRegistrationListener *> Listeners;
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public:
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PassRegistry() = default;
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~PassRegistry();
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/// getPassRegistry - Access the global registry object, which is
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/// automatically initialized at application launch and destroyed by
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/// llvm_shutdown.
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static PassRegistry *getPassRegistry();
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/// getPassInfo - Look up a pass' corresponding PassInfo, indexed by the pass'
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/// type identifier (&MyPass::ID).
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const PassInfo *getPassInfo(const void *TI) const;
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/// getPassInfo - Look up a pass' corresponding PassInfo, indexed by the pass'
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/// argument string.
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const PassInfo *getPassInfo(StringRef Arg) const;
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/// registerPass - Register a pass (by means of its PassInfo) with the
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/// registry. Required in order to use the pass with a PassManager.
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void registerPass(const PassInfo &PI, bool ShouldFree = false);
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/// registerAnalysisGroup - Register an analysis group (or a pass implementing
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// an analysis group) with the registry. Like registerPass, this is required
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// in order for a PassManager to be able to use this group/pass.
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void registerAnalysisGroup(const void *InterfaceID, const void *PassID,
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PassInfo &Registeree, bool isDefault,
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bool ShouldFree = false);
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/// enumerateWith - Enumerate the registered passes, calling the provided
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/// PassRegistrationListener's passEnumerate() callback on each of them.
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void enumerateWith(PassRegistrationListener *L);
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/// addRegistrationListener - Register the given PassRegistrationListener
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/// to receive passRegistered() callbacks whenever a new pass is registered.
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void addRegistrationListener(PassRegistrationListener *L);
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/// removeRegistrationListener - Unregister a PassRegistrationListener so that
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/// it no longer receives passRegistered() callbacks.
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void removeRegistrationListener(PassRegistrationListener *L);
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};
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// Create wrappers for C Binding types (see CBindingWrapping.h).
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DEFINE_STDCXX_CONVERSION_FUNCTIONS(PassRegistry, LLVMPassRegistryRef)
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} // end namespace llvm
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#endif // LLVM_PASSREGISTRY_H
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