#include "llvm/Pass.h"
#include "llvm/PassManager.h"
+#include "llvm/PassRegistry.h"
#include "llvm/Module.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringMap.h"
return PMT_BasicBlockPassManager;
}
-//===----------------------------------------------------------------------===//
-// Pass Registration mechanism
-//
-namespace {
-class PassRegistrar {
- /// Guards the contents of this class.
- mutable sys::SmartMutex<true> Lock;
-
- /// PassInfoMap - Keep track of the passinfo object for each registered llvm
- /// pass.
- typedef std::map<intptr_t, const PassInfo*> MapType;
- MapType PassInfoMap;
-
- typedef StringMap<const PassInfo*> StringMapType;
- StringMapType PassInfoStringMap;
-
- /// AnalysisGroupInfo - Keep track of information for each analysis group.
- struct AnalysisGroupInfo {
- std::set<const PassInfo *> Implementations;
- };
-
- /// AnalysisGroupInfoMap - Information for each analysis group.
- std::map<const PassInfo *, AnalysisGroupInfo> AnalysisGroupInfoMap;
-
-public:
-
- const PassInfo *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 *GetPassInfo(StringRef Arg) const {
- sys::SmartScopedLock<true> Guard(Lock);
- StringMapType::const_iterator I = PassInfoStringMap.find(Arg);
- return I != PassInfoStringMap.end() ? I->second : 0;
- }
-
- void RegisterPass(const PassInfo &PI) {
- sys::SmartScopedLock<true> Guard(Lock);
- bool Inserted =
- PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
- assert(Inserted && "Pass registered multiple times!"); Inserted=Inserted;
- PassInfoStringMap[PI.getPassArgument()] = &PI;
- }
-
- void 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!");
-
- // Remove pass from the map.
- PassInfoMap.erase(I);
- PassInfoStringMap.erase(PI.getPassArgument());
- }
-
- void EnumerateWith(PassRegistrationListener *L) {
- sys::SmartScopedLock<true> Guard(Lock);
- for (MapType::const_iterator I = PassInfoMap.begin(),
- E = PassInfoMap.end(); I != E; ++I)
- L->passEnumerate(I->second);
- }
-
-
- /// Analysis Group Mechanisms.
- void RegisterAnalysisGroup(PassInfo *InterfaceInfo,
- const PassInfo *ImplementationInfo,
- bool isDefault) {
- sys::SmartScopedLock<true> Guard(Lock);
- AnalysisGroupInfo &AGI = AnalysisGroupInfoMap[InterfaceInfo];
- assert(AGI.Implementations.count(ImplementationInfo) == 0 &&
- "Cannot add a pass to the same analysis group more than once!");
- AGI.Implementations.insert(ImplementationInfo);
- if (isDefault) {
- assert(InterfaceInfo->getNormalCtor() == 0 &&
- "Default implementation for analysis group already specified!");
- assert(ImplementationInfo->getNormalCtor() &&
- "Cannot specify pass as default if it does not have a default ctor");
- InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
- }
- }
-};
-}
-
-static std::vector<PassRegistrationListener*> *Listeners = 0;
-static sys::SmartMutex<true> ListenersLock;
-
-static PassRegistrar *PassRegistrarObj = 0;
-static PassRegistrar *getPassRegistrar() {
- // Use double-checked locking to safely initialize the registrar when
- // we're running in multithreaded mode.
- PassRegistrar* tmp = PassRegistrarObj;
- if (llvm_is_multithreaded()) {
- sys::MemoryFence();
- if (!tmp) {
- llvm_acquire_global_lock();
- tmp = PassRegistrarObj;
- if (!tmp) {
- tmp = new PassRegistrar();
- sys::MemoryFence();
- PassRegistrarObj = tmp;
- }
- llvm_release_global_lock();
- }
- } else if (!tmp) {
- PassRegistrarObj = new PassRegistrar();
- }
-
- return PassRegistrarObj;
-}
-
-namespace {
-
-// FIXME: We use ManagedCleanup 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 cleanupPassRegistrar(void*) {
- if (PassRegistrarObj) {
- delete PassRegistrarObj;
- PassRegistrarObj = 0;
- }
-}
-ManagedCleanup<&cleanupPassRegistrar> registrarCleanup ATTRIBUTE_USED;
-
-}
-
// getPassInfo - Return the PassInfo data structure that corresponds to this
// pass...
const PassInfo *Pass::getPassInfo() const {
}
const PassInfo *Pass::lookupPassInfo(intptr_t TI) {
- return getPassRegistrar()->GetPassInfo(TI);
+ return PassRegistry::getPassRegistry()->getPassInfo(TI);
}
const PassInfo *Pass::lookupPassInfo(StringRef Arg) {
- return getPassRegistrar()->GetPassInfo(Arg);
-}
-
-void PassInfo::registerPass() {
- getPassRegistrar()->RegisterPass(*this);
-
- // Notify any listeners.
- sys::SmartScopedLock<true> Lock(ListenersLock);
- if (Listeners)
- for (std::vector<PassRegistrationListener*>::iterator
- I = Listeners->begin(), E = Listeners->end(); I != E; ++I)
- (*I)->passRegistered(this);
-}
-
-void PassInfo::unregisterPass() {
- getPassRegistrar()->UnregisterPass(*this);
+ return PassRegistry::getPassRegistry()->getPassInfo(Arg);
}
Pass *PassInfo::createPass() const {
//
RegisterAGBase::RegisterAGBase(const char *Name, intptr_t InterfaceID,
intptr_t PassID, bool isDefault)
- : PassInfo(Name, InterfaceID) {
-
- PassInfo *InterfaceInfo =
- const_cast<PassInfo*>(Pass::lookupPassInfo(InterfaceID));
- if (InterfaceInfo == 0) {
- // First reference to Interface, register it now.
- registerPass();
- InterfaceInfo = this;
- }
- assert(isAnalysisGroup() &&
- "Trying to join an analysis group that is a normal pass!");
-
- if (PassID) {
- const PassInfo *ImplementationInfo = Pass::lookupPassInfo(PassID);
- assert(ImplementationInfo &&
- "Must register pass before adding to AnalysisGroup!");
-
- // Make sure we keep track of the fact that the implementation implements
- // the interface.
- PassInfo *IIPI = const_cast<PassInfo*>(ImplementationInfo);
- IIPI->addInterfaceImplemented(InterfaceInfo);
-
- getPassRegistrar()->RegisterAnalysisGroup(InterfaceInfo, IIPI, isDefault);
- }
+ : PassInfo(Name, InterfaceID) {
+ PassRegistry::getPassRegistry()->registerAnalysisGroup(InterfaceID, PassID,
+ *this, isDefault);
}
// PassRegistrationListener ctor - Add the current object to the list of
// PassRegistrationListeners...
PassRegistrationListener::PassRegistrationListener() {
- sys::SmartScopedLock<true> Lock(ListenersLock);
- if (!Listeners) Listeners = new std::vector<PassRegistrationListener*>();
- Listeners->push_back(this);
+ PassRegistry::getPassRegistry()->addRegistrationListener(this);
}
// dtor - Remove object from list of listeners...
PassRegistrationListener::~PassRegistrationListener() {
- sys::SmartScopedLock<true> Lock(ListenersLock);
- std::vector<PassRegistrationListener*>::iterator I =
- std::find(Listeners->begin(), Listeners->end(), this);
- assert(Listeners && I != Listeners->end() &&
- "PassRegistrationListener not registered!");
- Listeners->erase(I);
-
- if (Listeners->empty()) {
- delete Listeners;
- Listeners = 0;
- }
+ PassRegistry::getPassRegistry()->removeRegistrationListener(this);
}
// enumeratePasses - Iterate over the registered passes, calling the
// passEnumerate callback on each PassInfo object.
//
void PassRegistrationListener::enumeratePasses() {
- getPassRegistrar()->EnumerateWith(this);
+ PassRegistry::getPassRegistry()->enumerateWith(this);
}
PassNameParser::~PassNameParser() {}
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