//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
+#include "llvm/Pass.h"
#include "llvm/PassManager.h"
-#include "PassManagerT.h" // PassManagerT implementation
#include "llvm/Module.h"
#include "llvm/ModuleProvider.h"
#include "llvm/ADT/STLExtras.h"
-#include "llvm/Support/TypeInfo.h"
-#include <iostream>
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/System/Atomic.h"
+#include "llvm/System/Mutex.h"
+#include "llvm/System/Threading.h"
+#include <algorithm>
+#include <map>
#include <set>
using namespace llvm;
-//===----------------------------------------------------------------------===//
-// AnalysisResolver Class Implementation
-//
-
-AnalysisResolver::~AnalysisResolver() {
-}
-void AnalysisResolver::setAnalysisResolver(Pass *P, AnalysisResolver *AR) {
- assert(P->Resolver == 0 && "Pass already in a PassManager!");
- P->Resolver = AR;
-}
-
-//===----------------------------------------------------------------------===//
-// PassManager implementation - The PassManager class is a simple Pimpl class
-// that wraps the PassManagerT template.
-//
-PassManager::PassManager() : PM(new ModulePassManager()) {}
-PassManager::~PassManager() { delete PM; }
-void PassManager::add(Pass *P) {
- ModulePass *MP = dynamic_cast<ModulePass*>(P);
- assert(MP && "Not a modulepass?");
- PM->add(MP);
-}
-bool PassManager::run(Module &M) { return PM->runOnModule(M); }
-
-//===----------------------------------------------------------------------===//
-// FunctionPassManager implementation - The FunctionPassManager class
-// is a simple Pimpl class that wraps the PassManagerT template. It
-// is like PassManager, but only deals in FunctionPasses.
-//
-FunctionPassManager::FunctionPassManager(ModuleProvider *P) :
- PM(new FunctionPassManagerT()), MP(P) {}
-FunctionPassManager::~FunctionPassManager() { delete PM; }
-void FunctionPassManager::add(FunctionPass *P) { PM->add(P); }
-void FunctionPassManager::add(ImmutablePass *IP) { PM->add(IP); }
-
-/// doInitialization - Run all of the initializers for the function passes.
-///
-bool FunctionPassManager::doInitialization() {
- return PM->doInitialization(*MP->getModule());
-}
-
-bool FunctionPassManager::run(Function &F) {
- std::string errstr;
- if (MP->materializeFunction(&F, &errstr)) {
- std::cerr << "Error reading bytecode file: " << errstr << "\n";
- abort();
- }
- return PM->runOnFunction(F);
-}
-
-/// doFinalization - Run all of the initializers for the function passes.
-///
-bool FunctionPassManager::doFinalization() {
- return PM->doFinalization(*MP->getModule());
-}
-
-
-//===----------------------------------------------------------------------===//
-// TimingInfo Class - This class is used to calculate information about the
-// amount of time each pass takes to execute. This only happens with
-// -time-passes is enabled on the command line.
-//
-bool llvm::TimePassesIsEnabled = false;
-static cl::opt<bool,true>
-EnableTiming("time-passes", cl::location(TimePassesIsEnabled),
- cl::desc("Time each pass, printing elapsed time for each on exit"));
-
-// createTheTimeInfo - This method either initializes the TheTimeInfo pointer to
-// a non null value (if the -time-passes option is enabled) or it leaves it
-// null. It may be called multiple times.
-void TimingInfo::createTheTimeInfo() {
- if (!TimePassesIsEnabled || TheTimeInfo) return;
-
- // Constructed the first time this is called, iff -time-passes is enabled.
- // This guarantees that the object will be constructed before static globals,
- // thus it will be destroyed before them.
- static TimingInfo TTI;
- TheTimeInfo = &TTI;
-}
-
-void PMDebug::PrintArgumentInformation(const Pass *P) {
- // Print out passes in pass manager...
- if (const AnalysisResolver *PM = dynamic_cast<const AnalysisResolver*>(P)) {
- for (unsigned i = 0, e = PM->getNumContainedPasses(); i != e; ++i)
- PrintArgumentInformation(PM->getContainedPass(i));
-
- } else { // Normal pass. Print argument information...
- // Print out arguments for registered passes that are _optimizations_
- if (const PassInfo *PI = P->getPassInfo())
- if (!PI->isAnalysisGroup())
- std::cerr << " -" << PI->getPassArgument();
- }
-}
-
-void PMDebug::PrintPassInformation(unsigned Depth, const char *Action,
- Pass *P, Module *M) {
- if (PassDebugging >= Executions) {
- std::cerr << (void*)P << std::string(Depth*2+1, ' ') << Action << " '"
- << P->getPassName();
- if (M) std::cerr << "' on Module '" << M->getModuleIdentifier() << "'\n";
- std::cerr << "'...\n";
- }
-}
-
-void PMDebug::PrintPassInformation(unsigned Depth, const char *Action,
- Pass *P, Function *F) {
- if (PassDebugging >= Executions) {
- std::cerr << (void*)P << std::string(Depth*2+1, ' ') << Action << " '"
- << P->getPassName();
- if (F) std::cerr << "' on Function '" << F->getName();
- std::cerr << "'...\n";
- }
-}
-
-void PMDebug::PrintPassInformation(unsigned Depth, const char *Action,
- Pass *P, BasicBlock *BB) {
- if (PassDebugging >= Executions) {
- std::cerr << (void*)P << std::string(Depth*2+1, ' ') << Action << " '"
- << P->getPassName();
- if (BB) std::cerr << "' on BasicBlock '" << BB->getName();
- std::cerr << "'...\n";
- }
-}
-
-void PMDebug::PrintAnalysisSetInfo(unsigned Depth, const char *Msg,
- Pass *P, const std::vector<AnalysisID> &Set){
- if (PassDebugging >= Details && !Set.empty()) {
- std::cerr << (void*)P << std::string(Depth*2+3, ' ') << Msg << " Analyses:";
- for (unsigned i = 0; i != Set.size(); ++i) {
- if (i) std::cerr << ",";
- std::cerr << " " << Set[i]->getPassName();
- }
- std::cerr << "\n";
- }
-}
-
//===----------------------------------------------------------------------===//
// Pass Implementation
//
-void ModulePass::addToPassManager(ModulePassManager *PM, AnalysisUsage &AU) {
- PM->addPass(this, AU);
+// Force out-of-line virtual method.
+Pass::~Pass() {
+ delete Resolver;
}
+// Force out-of-line virtual method.
+ModulePass::~ModulePass() { }
+
bool Pass::mustPreserveAnalysisID(const PassInfo *AnalysisID) const {
- return Resolver->getAnalysisToUpdate(AnalysisID) != 0;
+ return Resolver->getAnalysisIfAvailable(AnalysisID, true) != 0;
}
// dumpPassStructure - Implement the -debug-passes=Structure option
void Pass::dumpPassStructure(unsigned Offset) {
- std::cerr << std::string(Offset*2, ' ') << getPassName() << "\n";
+ cerr << std::string(Offset*2, ' ') << getPassName() << "\n";
}
-// getPassName - Use C++ RTTI to get a SOMEWHAT intelligible name for the pass.
-//
+/// getPassName - Return a nice clean name for a pass. This usually
+/// implemented in terms of the name that is registered by one of the
+/// Registration templates, but can be overloaded directly.
+///
const char *Pass::getPassName() const {
if (const PassInfo *PI = getPassInfo())
return PI->getPassName();
- return typeid(*this).name();
+ return "Unnamed pass: implement Pass::getPassName()";
}
// print - Print out the internal state of the pass. This is called by Analyze
O << "Pass::print not implemented for pass: '" << getPassName() << "'!\n";
}
-// dump - call print(std::cerr);
+// dump - call print(cerr);
void Pass::dump() const {
- print(std::cerr, 0);
+ print(*cerr.stream(), 0);
}
//===----------------------------------------------------------------------===//
// ImmutablePass Implementation
//
-void ImmutablePass::addToPassManager(ModulePassManager *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
-}
-
+// Force out-of-line virtual method.
+ImmutablePass::~ImmutablePass() { }
//===----------------------------------------------------------------------===//
// FunctionPass Implementation
bool Changed = doInitialization(M);
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- if (!I->isExternal()) // Passes are not run on external functions!
+ if (!I->isDeclaration()) // Passes are not run on external functions!
Changed |= runOnFunction(*I);
return Changed | doFinalization(M);
// run - On a function, we simply initialize, run the function, then finalize.
//
bool FunctionPass::run(Function &F) {
- if (F.isExternal()) return false;// Passes are not run on external functions!
+ // Passes are not run on external functions!
+ if (F.isDeclaration()) return false;
bool Changed = doInitialization(*F.getParent());
Changed |= runOnFunction(F);
return Changed | doFinalization(*F.getParent());
}
-void FunctionPass::addToPassManager(ModulePassManager *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
-}
-
-void FunctionPass::addToPassManager(FunctionPassManagerT *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
-}
-
//===----------------------------------------------------------------------===//
// BasicBlockPass Implementation
//
return Changed | doFinalization(F);
}
-// To run directly on the basic block, we initialize, runOnBasicBlock, then
-// finalize.
+//===----------------------------------------------------------------------===//
+// Pass Registration mechanism
//
-bool BasicBlockPass::runPass(BasicBlock &BB) {
- Function &F = *BB.getParent();
- Module &M = *F.getParent();
- bool Changed = doInitialization(M);
- Changed |= doInitialization(F);
- Changed |= runOnBasicBlock(BB);
- Changed |= doFinalization(F);
- Changed |= doFinalization(M);
- return Changed;
-}
-
-void BasicBlockPass::addToPassManager(FunctionPassManagerT *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
-}
+namespace {
+class PassRegistrar {
+ /// PassInfoMap - Keep track of the passinfo object for each registered llvm
+ /// pass.
+ typedef std::map<intptr_t, const PassInfo*> MapType;
+ MapType PassInfoMap;
+
+ /// AnalysisGroupInfo - Keep track of information for each analysis group.
+ struct AnalysisGroupInfo {
+ const PassInfo *DefaultImpl;
+ std::set<const PassInfo *> Implementations;
+ AnalysisGroupInfo() : DefaultImpl(0) {}
+ };
+
+ /// AnalysisGroupInfoMap - Information for each analysis group.
+ std::map<const PassInfo *, AnalysisGroupInfo> AnalysisGroupInfoMap;
-void BasicBlockPass::addToPassManager(BasicBlockPassManager *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
+public:
+
+ const PassInfo *GetPassInfo(intptr_t TI) const {
+ MapType::const_iterator I = PassInfoMap.find(TI);
+ return I != PassInfoMap.end() ? I->second : 0;
+ }
+
+ void RegisterPass(const PassInfo &PI) {
+ bool Inserted =
+ PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
+ assert(Inserted && "Pass registered multiple times!"); Inserted=Inserted;
+ }
+
+ void UnregisterPass(const PassInfo &PI) {
+ 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);
+ }
+
+ void EnumerateWith(PassRegistrationListener *L) {
+ 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) {
+ 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(AGI.DefaultImpl == 0 && 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");
+ AGI.DefaultImpl = ImplementationInfo;
+ InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
+ }
+ }
+};
}
-
-//===----------------------------------------------------------------------===//
-// Pass Registration mechanism
-//
-static std::map<TypeInfo, PassInfo*> *PassInfoMap = 0;
static std::vector<PassRegistrationListener*> *Listeners = 0;
+static sys::SmartMutex<true> ListenersLock;
+
+// FIXME: This should use ManagedStatic to manage the pass registrar.
+// Unfortunately, we can't do this, because passes are registered with static
+// ctors, and having llvm_shutdown clear this map prevents successful
+// ressurection after llvm_shutdown is run.
+static PassRegistrar *getPassRegistrar() {
+ static PassRegistrar *PassRegistrarObj = 0;
+
+ // 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;
+}
// getPassInfo - Return the PassInfo data structure that corresponds to this
// pass...
const PassInfo *Pass::getPassInfo() const {
- if (PassInfoCache) return PassInfoCache;
- return lookupPassInfo(typeid(*this));
+ return lookupPassInfo(PassID);
}
-const PassInfo *Pass::lookupPassInfo(const std::type_info &TI) {
- if (PassInfoMap == 0) return 0;
- std::map<TypeInfo, PassInfo*>::iterator I = PassInfoMap->find(TI);
- return (I != PassInfoMap->end()) ? I->second : 0;
+const PassInfo *Pass::lookupPassInfo(intptr_t TI) {
+ return getPassRegistrar()->GetPassInfo(TI);
}
-void RegisterPassBase::registerPass() {
- if (PassInfoMap == 0)
- PassInfoMap = new std::map<TypeInfo, PassInfo*>();
+void PassInfo::registerPass() {
+ getPassRegistrar()->RegisterPass(*this);
- assert(PassInfoMap->find(PIObj.getTypeInfo()) == PassInfoMap->end() &&
- "Pass already registered!");
- PassInfoMap->insert(std::make_pair(TypeInfo(PIObj.getTypeInfo()), &PIObj));
-
- // Notify any listeners...
+ // 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(&PIObj);
+ (*I)->passRegistered(this);
}
-void RegisterPassBase::unregisterPass() {
- assert(PassInfoMap && "Pass registered but not in map!");
- std::map<TypeInfo, PassInfo*>::iterator I =
- PassInfoMap->find(PIObj.getTypeInfo());
- assert(I != PassInfoMap->end() && "Pass registered but not in map!");
-
- // Remove pass from the map...
- PassInfoMap->erase(I);
- if (PassInfoMap->empty()) {
- delete PassInfoMap;
- PassInfoMap = 0;
- }
-
- // Notify any listeners...
- if (Listeners)
- for (std::vector<PassRegistrationListener*>::iterator
- I = Listeners->begin(), E = Listeners->end(); I != E; ++I)
- (*I)->passUnregistered(&PIObj);
+void PassInfo::unregisterPass() {
+ getPassRegistrar()->UnregisterPass(*this);
}
//===----------------------------------------------------------------------===//
// Analysis Group Implementation Code
//===----------------------------------------------------------------------===//
-struct AnalysisGroupInfo {
- const PassInfo *DefaultImpl;
- std::set<const PassInfo *> Implementations;
- AnalysisGroupInfo() : DefaultImpl(0) {}
-};
-
-static std::map<const PassInfo *, AnalysisGroupInfo> *AnalysisGroupInfoMap = 0;
-
// RegisterAGBase implementation
//
-RegisterAGBase::RegisterAGBase(const std::type_info &Interface,
- const std::type_info *Pass, bool isDefault)
- : RegisterPassBase(Interface),
+RegisterAGBase::RegisterAGBase(const char *Name, intptr_t InterfaceID,
+ intptr_t PassID, bool isDefault)
+ : PassInfo(Name, InterfaceID),
ImplementationInfo(0), isDefaultImplementation(isDefault) {
- InterfaceInfo = const_cast<PassInfo*>(Pass::lookupPassInfo(Interface));
+ InterfaceInfo = const_cast<PassInfo*>(Pass::lookupPassInfo(InterfaceID));
if (InterfaceInfo == 0) {
// First reference to Interface, register it now.
registerPass();
- InterfaceInfo = &PIObj;
+ InterfaceInfo = this;
}
- assert(PIObj.isAnalysisGroup() &&
+ assert(isAnalysisGroup() &&
"Trying to join an analysis group that is a normal pass!");
- if (Pass) {
- ImplementationInfo = Pass::lookupPassInfo(*Pass);
+ if (PassID) {
+ ImplementationInfo = Pass::lookupPassInfo(PassID);
assert(ImplementationInfo &&
"Must register pass before adding to AnalysisGroup!");
// the interface.
PassInfo *IIPI = const_cast<PassInfo*>(ImplementationInfo);
IIPI->addInterfaceImplemented(InterfaceInfo);
-
- // Lazily allocate to avoid nasty initialization order dependencies
- if (AnalysisGroupInfoMap == 0)
- AnalysisGroupInfoMap = new std::map<const PassInfo *,AnalysisGroupInfo>();
-
- 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(AGI.DefaultImpl == 0 && 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");
- AGI.DefaultImpl = ImplementationInfo;
- InterfaceInfo->setNormalCtor(ImplementationInfo->getNormalCtor());
- }
+
+ getPassRegistrar()->RegisterAnalysisGroup(InterfaceInfo, IIPI, isDefault);
}
}
-void RegisterAGBase::setGroupName(const char *Name) {
- assert(InterfaceInfo->getPassName()[0] == 0 && "Interface Name already set!");
- InterfaceInfo->setPassName(Name);
-}
-
-RegisterAGBase::~RegisterAGBase() {
- if (ImplementationInfo) {
- assert(AnalysisGroupInfoMap && "Inserted into map, but map doesn't exist?");
- AnalysisGroupInfo &AGI = (*AnalysisGroupInfoMap)[InterfaceInfo];
-
- assert(AGI.Implementations.count(ImplementationInfo) &&
- "Pass not a member of analysis group?");
-
- if (AGI.DefaultImpl == ImplementationInfo)
- AGI.DefaultImpl = 0;
-
- AGI.Implementations.erase(ImplementationInfo);
-
- // Last member of this analysis group? Unregister PassInfo, delete map entry
- if (AGI.Implementations.empty()) {
- assert(AGI.DefaultImpl == 0 &&
- "Default implementation didn't unregister?");
- AnalysisGroupInfoMap->erase(InterfaceInfo);
- if (AnalysisGroupInfoMap->empty()) { // Delete map if empty
- delete AnalysisGroupInfoMap;
- AnalysisGroupInfoMap = 0;
- }
- }
- }
-
- if (InterfaceInfo == &PIObj)
- unregisterPass();
-}
-
//===----------------------------------------------------------------------===//
// PassRegistrationListener implementation
// 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);
}
// 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() &&
// passEnumerate callback on each PassInfo object.
//
void PassRegistrationListener::enumeratePasses() {
- if (PassInfoMap)
- for (std::map<TypeInfo, PassInfo*>::iterator I = PassInfoMap->begin(),
- E = PassInfoMap->end(); I != E; ++I)
- passEnumerate(I->second);
+ getPassRegistrar()->EnumerateWith(this);
}
//===----------------------------------------------------------------------===//
// AnalysisUsage Class Implementation
//
+namespace {
+ struct GetCFGOnlyPasses : public PassRegistrationListener {
+ typedef AnalysisUsage::VectorType VectorType;
+ VectorType &CFGOnlyList;
+ GetCFGOnlyPasses(VectorType &L) : CFGOnlyList(L) {}
+
+ void passEnumerate(const PassInfo *P) {
+ if (P->isCFGOnlyPass())
+ CFGOnlyList.push_back(P);
+ }
+ };
+}
+
// setPreservesCFG - This function should be called to by the pass, iff they do
// not:
//
void AnalysisUsage::setPreservesCFG() {
// Since this transformation doesn't modify the CFG, it preserves all analyses
// that only depend on the CFG (like dominators, loop info, etc...)
- //
- if (PassInfoMap) {
- for (std::map<TypeInfo, PassInfo*>::iterator I = PassInfoMap->begin(),
- E = PassInfoMap->end(); I != E; ++I)
- if (I->second->isCFGOnlyPass())
- Preserved.push_back(I->second);
- }
+ GetCFGOnlyPasses(Preserved).enumeratePasses();
}
projects / oota-llvm.git / blobdiff