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293df8afae
This improves the performance of recordAvailableAnalysis and freePass so that they don't need to call getPassInfo(), which acquires a lock on every call. The performance-wise interesting part is only in LegacyPassManager.cpp, everything else is just cleanup.
82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
//===- PassRegistry.cpp - Pass Registration Implementation ----------------===//
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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 implements the PassRegistry, with which passes are registered on
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// initialization, and supports the PassManager in dependency resolution.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/PassRegistry.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Pass.h"
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#include "llvm/PassInfo.h"
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#include <cassert>
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#include <memory>
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#include <utility>
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using namespace llvm;
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PassRegistry *PassRegistry::getPassRegistry() {
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static PassRegistry PassRegistryObj;
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return &PassRegistryObj;
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}
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//===----------------------------------------------------------------------===//
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// Accessors
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//
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PassRegistry::~PassRegistry() = default;
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const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
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sys::SmartScopedReader<true> Guard(Lock);
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return PassInfoMap.lookup(TI);
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}
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const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
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sys::SmartScopedReader<true> Guard(Lock);
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return PassInfoStringMap.lookup(Arg);
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}
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//===----------------------------------------------------------------------===//
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// Pass Registration mechanism
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//
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void PassRegistry::registerPass(const PassInfo &PI, bool ShouldFree) {
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sys::SmartScopedWriter<true> Guard(Lock);
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bool Inserted =
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PassInfoMap.insert(std::make_pair(PI.getTypeInfo(), &PI)).second;
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assert(Inserted && "Pass registered multiple times!");
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(void)Inserted;
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PassInfoStringMap[PI.getPassArgument()] = &PI;
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// Notify any listeners.
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for (auto *Listener : Listeners)
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Listener->passRegistered(&PI);
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if (ShouldFree)
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ToFree.push_back(std::unique_ptr<const PassInfo>(&PI));
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}
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void PassRegistry::enumerateWith(PassRegistrationListener *L) {
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sys::SmartScopedReader<true> Guard(Lock);
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for (auto PassInfoPair : PassInfoMap)
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L->passEnumerate(PassInfoPair.second);
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}
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void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
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sys::SmartScopedWriter<true> Guard(Lock);
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Listeners.push_back(L);
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}
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void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
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sys::SmartScopedWriter<true> Guard(Lock);
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auto I = llvm::find(Listeners, L);
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Listeners.erase(I);
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}
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