mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-25 11:56:08 +00:00
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 ----------------===//
|
|
//
|
|
// 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);
|
|
}
|