mirror of
https://github.com/c64scene-ar/llvm-6502.git
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into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
210 lines
7.7 KiB
C++
210 lines
7.7 KiB
C++
//===- PassRegistry.cpp - Pass Registration Implementation ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/DenseMap.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/IR/Function.h"
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#include "llvm/PassSupport.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Mutex.h"
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#include <vector>
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using namespace llvm;
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// FIXME: We use ManagedStatic to erase the pass registrar on shutdown.
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// Unfortunately, passes are registered with static ctors, and having
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// llvm_shutdown clear this map prevents successful resurrection after
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// llvm_shutdown is run. Ideally we should find a solution so that we don't
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// leak the map, AND can still resurrect after shutdown.
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static ManagedStatic<PassRegistry> PassRegistryObj;
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PassRegistry *PassRegistry::getPassRegistry() {
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return &*PassRegistryObj;
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}
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static ManagedStatic<sys::SmartMutex<true> > Lock;
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//===----------------------------------------------------------------------===//
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// PassRegistryImpl
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//
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namespace {
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struct PassRegistryImpl {
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/// PassInfoMap - Keep track of the PassInfo object for each registered pass.
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typedef DenseMap<const void*, const PassInfo*> MapType;
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MapType PassInfoMap;
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typedef StringMap<const PassInfo*> StringMapType;
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StringMapType PassInfoStringMap;
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/// AnalysisGroupInfo - Keep track of information for each analysis group.
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struct AnalysisGroupInfo {
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SmallPtrSet<const PassInfo *, 8> Implementations;
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};
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DenseMap<const PassInfo*, AnalysisGroupInfo> AnalysisGroupInfoMap;
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std::vector<const PassInfo*> ToFree;
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std::vector<PassRegistrationListener*> Listeners;
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};
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} // end anonymous namespace
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void *PassRegistry::getImpl() const {
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if (!pImpl)
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pImpl = new PassRegistryImpl();
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return pImpl;
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}
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//===----------------------------------------------------------------------===//
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// Accessors
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//
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PassRegistry::~PassRegistry() {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(pImpl);
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for (std::vector<const PassInfo*>::iterator I = Impl->ToFree.begin(),
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E = Impl->ToFree.end(); I != E; ++I)
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delete *I;
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delete Impl;
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pImpl = 0;
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}
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const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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PassRegistryImpl::MapType::const_iterator I = Impl->PassInfoMap.find(TI);
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return I != Impl->PassInfoMap.end() ? I->second : 0;
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}
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const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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PassRegistryImpl::StringMapType::const_iterator
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I = Impl->PassInfoStringMap.find(Arg);
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return I != Impl->PassInfoStringMap.end() ? I->second : 0;
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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::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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bool Inserted =
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Impl->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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Impl->PassInfoStringMap[PI.getPassArgument()] = &PI;
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// Notify any listeners.
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for (std::vector<PassRegistrationListener*>::iterator
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I = Impl->Listeners.begin(), E = Impl->Listeners.end(); I != E; ++I)
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(*I)->passRegistered(&PI);
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if (ShouldFree) Impl->ToFree.push_back(&PI);
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}
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void PassRegistry::unregisterPass(const PassInfo &PI) {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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PassRegistryImpl::MapType::iterator I =
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Impl->PassInfoMap.find(PI.getTypeInfo());
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assert(I != Impl->PassInfoMap.end() && "Pass registered but not in map!");
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// Remove pass from the map.
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Impl->PassInfoMap.erase(I);
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Impl->PassInfoStringMap.erase(PI.getPassArgument());
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}
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void PassRegistry::enumerateWith(PassRegistrationListener *L) {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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for (PassRegistryImpl::MapType::const_iterator I = Impl->PassInfoMap.begin(),
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E = Impl->PassInfoMap.end(); I != E; ++I)
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L->passEnumerate(I->second);
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}
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/// Analysis Group Mechanisms.
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void PassRegistry::registerAnalysisGroup(const void *InterfaceID,
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const void *PassID,
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PassInfo& Registeree,
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bool isDefault,
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bool ShouldFree) {
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PassInfo *InterfaceInfo = const_cast<PassInfo*>(getPassInfo(InterfaceID));
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if (InterfaceInfo == 0) {
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// First reference to Interface, register it now.
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registerPass(Registeree);
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InterfaceInfo = &Registeree;
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}
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assert(Registeree.isAnalysisGroup() &&
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"Trying to join an analysis group that is a normal pass!");
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if (PassID) {
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PassInfo *ImplementationInfo = const_cast<PassInfo*>(getPassInfo(PassID));
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assert(ImplementationInfo &&
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"Must register pass before adding to AnalysisGroup!");
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sys::SmartScopedLock<true> Guard(*Lock);
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// Make sure we keep track of the fact that the implementation implements
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// the interface.
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ImplementationInfo->addInterfaceImplemented(InterfaceInfo);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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PassRegistryImpl::AnalysisGroupInfo &AGI =
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Impl->AnalysisGroupInfoMap[InterfaceInfo];
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assert(AGI.Implementations.count(ImplementationInfo) == 0 &&
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"Cannot add a pass to the same analysis group more than once!");
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AGI.Implementations.insert(ImplementationInfo);
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if (isDefault) {
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assert(InterfaceInfo->getNormalCtor() == 0 &&
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"Default implementation for analysis group already specified!");
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assert(ImplementationInfo->getNormalCtor() &&
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"Cannot specify pass as default if it does not have a default ctor");
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InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
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}
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}
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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if (ShouldFree) Impl->ToFree.push_back(&Registeree);
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}
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void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
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sys::SmartScopedLock<true> Guard(*Lock);
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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Impl->Listeners.push_back(L);
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}
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void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
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sys::SmartScopedLock<true> Guard(*Lock);
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// NOTE: This is necessary, because removeRegistrationListener() can be called
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// as part of the llvm_shutdown sequence. Since we have no control over the
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// order of that sequence, we need to gracefully handle the case where the
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// PassRegistry is destructed before the object that triggers this call.
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if (!pImpl) return;
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PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
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std::vector<PassRegistrationListener*>::iterator I =
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std::find(Impl->Listeners.begin(), Impl->Listeners.end(), L);
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assert(I != Impl->Listeners.end() &&
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"PassRegistrationListener not registered!");
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Impl->Listeners.erase(I);
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}
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