#include "llvm/PassSupport.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/StringMap.h"
+#include <vector>
using namespace llvm;
-static PassRegistry *PassRegistryObj = 0;
-PassRegistry *PassRegistry::getPassRegistry() {
- // Use double-checked locking to safely initialize the registrar when
- // we're running in multithreaded mode.
- PassRegistry* tmp = PassRegistryObj;
- if (llvm_is_multithreaded()) {
- sys::MemoryFence();
- if (!tmp) {
- llvm_acquire_global_lock();
- tmp = PassRegistryObj;
- if (!tmp) {
- tmp = new PassRegistry();
- sys::MemoryFence();
- PassRegistryObj = tmp;
- }
- llvm_release_global_lock();
- }
- } else if (!tmp) {
- PassRegistryObj = new PassRegistry();
- }
-
- return PassRegistryObj;
-}
-
-namespace {
-
-// FIXME: We use ManagedCleanup to erase the pass registrar on shutdown.
+// FIXME: We use ManagedStatic to erase the pass registrar on shutdown.
// Unfortunately, passes are registered with static ctors, and having
// llvm_shutdown clear this map prevents successful ressurection after
// llvm_shutdown is run. Ideally we should find a solution so that we don't
// leak the map, AND can still resurrect after shutdown.
-void cleanupPassRegistry(void*) {
- if (PassRegistryObj) {
- delete PassRegistryObj;
- PassRegistryObj = 0;
- }
+static ManagedStatic<PassRegistry> PassRegistryObj;
+PassRegistry *PassRegistry::getPassRegistry() {
+ return &*PassRegistryObj;
+}
+
+//===----------------------------------------------------------------------===//
+// PassRegistryImpl
+//
+
+struct PassRegistryImpl {
+ /// PassInfoMap - Keep track of the PassInfo object for each registered pass.
+ typedef DenseMap<const void*, const PassInfo*> MapType;
+ MapType PassInfoMap;
+
+ typedef StringMap<const PassInfo*> StringMapType;
+ StringMapType PassInfoStringMap;
+
+ /// AnalysisGroupInfo - Keep track of information for each analysis group.
+ struct AnalysisGroupInfo {
+ SmallPtrSet<const PassInfo *, 8> Implementations;
+ };
+ DenseMap<const PassInfo*, AnalysisGroupInfo> AnalysisGroupInfoMap;
+
+ std::vector<PassRegistrationListener*> Listeners;
+};
+
+void *PassRegistry::getImpl() const {
+ if (!pImpl)
+ pImpl = new PassRegistryImpl();
+ return pImpl;
}
-ManagedCleanup<&cleanupPassRegistry> registryCleanup ATTRIBUTE_USED;
+//===----------------------------------------------------------------------===//
+// Accessors
+//
+
+PassRegistry::~PassRegistry() {
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(pImpl);
+ if (Impl) delete Impl;
+ pImpl = 0;
}
-const PassInfo *PassRegistry::getPassInfo(intptr_t TI) const {
- sys::SmartScopedLock<true> Guard(Lock);
- MapType::const_iterator I = PassInfoMap.find(TI);
- return I != PassInfoMap.end() ? I->second : 0;
+const PassInfo *PassRegistry::getPassInfo(const void *TI) const {
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ PassRegistryImpl::MapType::const_iterator I = Impl->PassInfoMap.find(TI);
+ return I != Impl->PassInfoMap.end() ? I->second : 0;
}
const PassInfo *PassRegistry::getPassInfo(StringRef Arg) const {
- sys::SmartScopedLock<true> Guard(Lock);
- StringMapType::const_iterator I = PassInfoStringMap.find(Arg);
- return I != PassInfoStringMap.end() ? I->second : 0;
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ PassRegistryImpl::StringMapType::const_iterator
+ I = Impl->PassInfoStringMap.find(Arg);
+ return I != Impl->PassInfoStringMap.end() ? I->second : 0;
}
//===----------------------------------------------------------------------===//
void PassRegistry::registerPass(const PassInfo &PI) {
sys::SmartScopedLock<true> Guard(Lock);
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
bool Inserted =
- PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
+ Impl->PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
assert(Inserted && "Pass registered multiple times!"); Inserted=Inserted;
- PassInfoStringMap[PI.getPassArgument()] = &PI;
+ Impl->PassInfoStringMap[PI.getPassArgument()] = &PI;
// Notify any listeners.
for (std::vector<PassRegistrationListener*>::iterator
- I = Listeners.begin(), E = Listeners.end(); I != E; ++I)
+ I = Impl->Listeners.begin(), E = Impl->Listeners.end(); I != E; ++I)
(*I)->passRegistered(&PI);
}
void PassRegistry::unregisterPass(const PassInfo &PI) {
sys::SmartScopedLock<true> Guard(Lock);
- MapType::iterator I = PassInfoMap.find(PI.getTypeInfo());
- assert(I != PassInfoMap.end() && "Pass registered but not in map!");
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ PassRegistryImpl::MapType::iterator I =
+ Impl->PassInfoMap.find(PI.getTypeInfo());
+ assert(I != Impl->PassInfoMap.end() && "Pass registered but not in map!");
// Remove pass from the map.
- PassInfoMap.erase(I);
- PassInfoStringMap.erase(PI.getPassArgument());
+ Impl->PassInfoMap.erase(I);
+ Impl->PassInfoStringMap.erase(PI.getPassArgument());
}
void PassRegistry::enumerateWith(PassRegistrationListener *L) {
sys::SmartScopedLock<true> Guard(Lock);
- for (MapType::const_iterator I = PassInfoMap.begin(),
- E = PassInfoMap.end(); I != E; ++I)
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ for (PassRegistryImpl::MapType::const_iterator I = Impl->PassInfoMap.begin(),
+ E = Impl->PassInfoMap.end(); I != E; ++I)
L->passEnumerate(I->second);
}
/// Analysis Group Mechanisms.
-void PassRegistry::registerAnalysisGroup(intptr_t InterfaceID,
- intptr_t PassID,
+void PassRegistry::registerAnalysisGroup(const void *InterfaceID,
+ const void *PassID,
PassInfo& Registeree,
bool isDefault) {
+ sys::SmartScopedLock<true> Guard(Lock);
PassInfo *InterfaceInfo = const_cast<PassInfo*>(getPassInfo(InterfaceID));
if (InterfaceInfo == 0) {
// First reference to Interface, register it now.
// the interface.
ImplementationInfo->addInterfaceImplemented(InterfaceInfo);
- sys::SmartScopedLock<true> Guard(Lock);
- AnalysisGroupInfo &AGI = AnalysisGroupInfoMap[InterfaceInfo];
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ PassRegistryImpl::AnalysisGroupInfo &AGI =
+ Impl->AnalysisGroupInfoMap[InterfaceInfo];
assert(AGI.Implementations.count(ImplementationInfo) == 0 &&
"Cannot add a pass to the same analysis group more than once!");
AGI.Implementations.insert(ImplementationInfo);
void PassRegistry::addRegistrationListener(PassRegistrationListener *L) {
sys::SmartScopedLock<true> Guard(Lock);
- Listeners.push_back(L);
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
+ Impl->Listeners.push_back(L);
}
void PassRegistry::removeRegistrationListener(PassRegistrationListener *L) {
sys::SmartScopedLock<true> Guard(Lock);
+
+ // NOTE: This is necessary, because removeRegistrationListener() can be called
+ // as part of the llvm_shutdown sequence. Since we have no control over the
+ // order of that sequence, we need to gracefully handle the case where the
+ // PassRegistry is destructed before the object that triggers this call.
+ if (!pImpl) return;
+
+ PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(getImpl());
std::vector<PassRegistrationListener*>::iterator I =
- std::find(Listeners.begin(), Listeners.end(), L);
- assert(I != Listeners.end() && "PassRegistrationListener not registered!");
- Listeners.erase(I);
+ std::find(Impl->Listeners.begin(), Impl->Listeners.end(), L);
+ assert(I != Impl->Listeners.end() &&
+ "PassRegistrationListener not registered!");
+ Impl->Listeners.erase(I);
}
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