6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
87 lines
3.2 KiB
C++
87 lines
3.2 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/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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/// 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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} // end namespace llvm
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#endif // LLVM_PASSREGISTRY_H
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