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//===- PassRegistry.cpp - Pass Registration Implementation ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the PassRegistry, with which passes are registered on
// initialization, and supports the PassManager in dependency resolution.
//
//===----------------------------------------------------------------------===//
#include "llvm/PassRegistry.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Pass.h"
#include "llvm/PassInfo.h"
#include <cassert>
#include <memory>
#include <utility>
using namespace llvm;
PassRegistry *PassRegistry::getPassRegistry() {
static PassRegistry PassRegistryObj;
return &PassRegistryObj;
}
//===----------------------------------------------------------------------===//
// Accessors
//
PassRegistry::~PassRegistry() = default;
const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
sys::SmartScopedReader<true> Guard(Lock);
return PassInfoMap.lookup(TI);
}
const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
sys::SmartScopedReader<true> Guard(Lock);
return PassInfoStringMap.lookup(Arg);
}
//===----------------------------------------------------------------------===//
// Pass Registration mechanism
//
void PassRegistry::registerPass(const PassInfo &PI, bool ShouldFree) {
sys::SmartScopedWriter<true> Guard(Lock);
bool Inserted =
PassInfoMap.insert(std::make_pair(PI.getTypeInfo(), &PI)).second;
assert(Inserted && "Pass registered multiple times!");
(void)Inserted;
PassInfoStringMap[PI.getPassArgument()] = &PI;
// Notify any listeners.
for (auto *Listener : Listeners)
Listener->passRegistered(&PI);
if (ShouldFree)
ToFree.push_back(std::unique_ptr<const PassInfo>(&PI));
}
void PassRegistry::enumerateWith(PassRegistrationListener *L) {
sys::SmartScopedReader<true> Guard(Lock);
for (auto PassInfoPair : PassInfoMap)
L->passEnumerate(PassInfoPair.second);
}
void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
sys::SmartScopedWriter<true> Guard(Lock);
Listeners.push_back(L);
}
void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
sys::SmartScopedWriter<true> Guard(Lock);
auto I = llvm::find(Listeners, L);
Listeners.erase(I);
}
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