-//===- Pass.cpp - LLVM Pass Infrastructure Impementation ------------------===//
+//===- Pass.cpp - LLVM Pass Infrastructure Implementation -----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file implements the LLVM Pass infrastructure. It is primarily
// responsible with ensuring that passes are executed and batched together
//
//===----------------------------------------------------------------------===//
+#include "llvm/Pass.h"
#include "llvm/PassManager.h"
-#include "PassManagerT.h" // PassManagerT implementation
#include "llvm/Module.h"
-#include "Support/STLExtras.h"
-#include "Support/TypeInfo.h"
-#include "Config/stdio.h"
-#include "Config/sys/resource.h"
-#include "Config/sys/time.h"
-#include "Config/unistd.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/Assembly/PrintModulePass.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PassNameParser.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Atomic.h"
+#include "llvm/System/Mutex.h"
+#include "llvm/System/Threading.h"
+#include <algorithm>
+#include <map>
#include <set>
-
-// IncludeFile - Stub function used to help linking out.
-IncludeFile::IncludeFile(void*) {}
+using namespace llvm;
//===----------------------------------------------------------------------===//
-// AnalysisID Class Implementation
+// Pass Implementation
//
-static std::vector<const PassInfo*> CFGOnlyAnalyses;
-
-void RegisterPassBase::setPreservesCFG() {
- CFGOnlyAnalyses.push_back(PIObj);
+Pass::Pass(PassKind K, intptr_t pid) : Resolver(0), PassID(pid), Kind(K) {
+ assert(pid && "pid cannot be 0");
}
-//===----------------------------------------------------------------------===//
-// AnalysisResolver Class Implementation
-//
+Pass::Pass(PassKind K, const void *pid)
+ : Resolver(0), PassID((intptr_t)pid), Kind(K) {
+ assert(pid && "pid cannot be 0");
+}
-void AnalysisResolver::setAnalysisResolver(Pass *P, AnalysisResolver *AR) {
- assert(P->Resolver == 0 && "Pass already in a PassManager!");
- P->Resolver = AR;
+// Force out-of-line virtual method.
+Pass::~Pass() {
+ delete Resolver;
}
-//===----------------------------------------------------------------------===//
-// AnalysisUsage Class Implementation
-//
+// Force out-of-line virtual method.
+ModulePass::~ModulePass() { }
-// setPreservesCFG - This function should be called to by the pass, iff they do
-// not:
-//
-// 1. Add or remove basic blocks from the function
-// 2. Modify terminator instructions in any way.
-//
-// This function annotates the AnalysisUsage info object to say that analyses
-// that only depend on the CFG are preserved by this pass.
-//
-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...)
- //
- Preserved.insert(Preserved.end(),
- CFGOnlyAnalyses.begin(), CFGOnlyAnalyses.end());
+Pass *ModulePass::createPrinterPass(raw_ostream &O,
+ const std::string &Banner) const {
+ return createPrintModulePass(&O, false, Banner);
}
+PassManagerType ModulePass::getPotentialPassManagerType() const {
+ return PMT_ModulePassManager;
+}
-//===----------------------------------------------------------------------===//
-// PassManager implementation - The PassManager class is a simple Pimpl class
-// that wraps the PassManagerT template.
-//
-PassManager::PassManager() : PM(new PassManagerT<Module>()) {}
-PassManager::~PassManager() { delete PM; }
-void PassManager::add(Pass *P) { PM->add(P); }
-bool PassManager::run(Module &M) { return PM->run(M); }
+bool Pass::mustPreserveAnalysisID(const PassInfo *AnalysisID) const {
+ return Resolver->getAnalysisIfAvailable(AnalysisID, true) != 0;
+}
-//===----------------------------------------------------------------------===//
-// 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() : PM(new PassManagerT<Function>()) {}
-FunctionPassManager::~FunctionPassManager() { delete PM; }
-void FunctionPassManager::add(FunctionPass *P) { PM->add(P); }
-void FunctionPassManager::add(ImmutablePass *IP) { PM->add(IP); }
-bool FunctionPassManager::run(Function &F) { return PM->run(F); }
+// dumpPassStructure - Implement the -debug-passes=Structure option
+void Pass::dumpPassStructure(unsigned Offset) {
+ dbgs().indent(Offset*2) << getPassName() << "\n";
+}
+/// 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 StaticPassInfo *PI = getPassInfo())
+ return PI->getPassName();
+ return "Unnamed pass: implement Pass::getPassName()";
+}
-//===----------------------------------------------------------------------===//
-// 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.
-//
-static cl::opt<bool>
-EnableTiming("time-passes",
- 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 (!EnableTiming || 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->getPassType() & PassInfo::Optimization)
- std::cerr << " -" << PI->getPassArgument();
- }
+void Pass::preparePassManager(PMStack &) {
+ // By default, don't do anything.
}
-void PMDebug::PrintPassInformation(unsigned Depth, const char *Action,
- Pass *P, Annotable *V) {
- if (PassDebugging >= Executions) {
- std::cerr << (void*)P << std::string(Depth*2+1, ' ') << Action << " '"
- << P->getPassName();
- if (V) {
- std::cerr << "' on ";
-
- if (dynamic_cast<Module*>(V)) {
- std::cerr << "Module\n"; return;
- } else if (Function *F = dynamic_cast<Function*>(V))
- std::cerr << "Function '" << F->getName();
- else if (BasicBlock *BB = dynamic_cast<BasicBlock*>(V))
- std::cerr << "BasicBlock '" << BB->getName();
- else if (Value *Val = dynamic_cast<Value*>(V))
- std::cerr << typeid(*Val).name() << " '" << Val->getName();
- }
- std::cerr << "'...\n";
- }
+PassManagerType Pass::getPotentialPassManagerType() const {
+ // Default implementation.
+ return PMT_Unknown;
}
-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";
- }
+void Pass::getAnalysisUsage(AnalysisUsage &) const {
+ // By default, no analysis results are used, all are invalidated.
}
-//===----------------------------------------------------------------------===//
-// Pass Implementation
-//
+void Pass::releaseMemory() {
+ // By default, don't do anything.
+}
-void Pass::addToPassManager(PassManagerT<Module> *PM, AnalysisUsage &AU) {
- PM->addPass(this, AU);
+void Pass::verifyAnalysis() const {
+ // By default, don't do anything.
}
-bool Pass::mustPreserveAnalysisID(const PassInfo *AnalysisID) const {
- return Resolver->getAnalysisToUpdate(AnalysisID) != 0;
+void *Pass::getAdjustedAnalysisPointer(const StaticPassInfo *) {
+ return this;
}
-// dumpPassStructure - Implement the -debug-passes=Structure option
-void Pass::dumpPassStructure(unsigned Offset) {
- std::cerr << std::string(Offset*2, ' ') << getPassName() << "\n";
+ImmutablePass *Pass::getAsImmutablePass() {
+ return 0;
}
-// getPassName - Use C++ RTTI to get a SOMEWHAT intelligable name for the pass.
-//
-const char *Pass::getPassName() const {
- if (const PassInfo *PI = getPassInfo())
- return PI->getPassName();
- return typeid(*this).name();
+PMDataManager *Pass::getAsPMDataManager() {
+ return 0;
}
-// print - Print out the internal state of the pass. This is called by Analyse
-// to print out the contents of an analysis. Otherwise it is not neccesary to
+void Pass::setResolver(AnalysisResolver *AR) {
+ assert(!Resolver && "Resolver is already set");
+ Resolver = AR;
+}
+
+// print - Print out the internal state of the pass. This is called by Analyze
+// to print out the contents of an analysis. Otherwise it is not necessary to
// implement this method.
//
-void Pass::print(std::ostream &O) const {
+void Pass::print(raw_ostream &O,const Module*) const {
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(dbgs(), 0);
}
//===----------------------------------------------------------------------===//
// ImmutablePass Implementation
//
-void ImmutablePass::addToPassManager(PassManagerT<Module> *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
-}
+// Force out-of-line virtual method.
+ImmutablePass::~ImmutablePass() { }
+void ImmutablePass::initializePass() {
+ // By default, don't do anything.
+}
//===----------------------------------------------------------------------===//
// FunctionPass Implementation
//
+Pass *FunctionPass::createPrinterPass(raw_ostream &O,
+ const std::string &Banner) const {
+ return createPrintFunctionPass(Banner, &O);
+}
+
// run - On a module, we run this pass by initializing, runOnFunction'ing once
// for every function in the module, then by finalizing.
//
-bool FunctionPass::run(Module &M) {
+bool FunctionPass::runOnModule(Module &M) {
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;
- return doInitialization(*F.getParent()) | runOnFunction(F)
- | doFinalization(*F.getParent());
+ bool Changed = doInitialization(*F.getParent());
+ Changed |= runOnFunction(F);
+ return Changed | doFinalization(*F.getParent());
}
-void FunctionPass::addToPassManager(PassManagerT<Module> *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
+bool FunctionPass::doInitialization(Module &) {
+ // By default, don't do anything.
+ return false;
}
-void FunctionPass::addToPassManager(PassManagerT<Function> *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
+bool FunctionPass::doFinalization(Module &) {
+ // By default, don't do anything.
+ return false;
+}
+
+PassManagerType FunctionPass::getPotentialPassManagerType() const {
+ return PMT_FunctionPassManager;
}
//===----------------------------------------------------------------------===//
// BasicBlockPass Implementation
//
+Pass *BasicBlockPass::createPrinterPass(raw_ostream &O,
+ const std::string &Banner) const {
+
+ llvm_unreachable("BasicBlockPass printing unsupported.");
+ return 0;
+}
+
// To run this pass on a function, we simply call runOnBasicBlock once for each
// function.
//
return Changed | doFinalization(F);
}
-// To run directly on the basic block, we initialize, runOnBasicBlock, then
-// finalize.
-//
-bool BasicBlockPass::run(BasicBlock &BB) {
- Function &F = *BB.getParent();
- Module &M = *F.getParent();
- return doInitialization(M) | doInitialization(F) | runOnBasicBlock(BB) |
- doFinalization(F) | doFinalization(M);
+bool BasicBlockPass::doInitialization(Module &) {
+ // By default, don't do anything.
+ return false;
}
-void BasicBlockPass::addToPassManager(PassManagerT<Function> *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
+bool BasicBlockPass::doInitialization(Function &) {
+ // By default, don't do anything.
+ return false;
}
-void BasicBlockPass::addToPassManager(PassManagerT<BasicBlock> *PM,
- AnalysisUsage &AU) {
- PM->addPass(this, AU);
+bool BasicBlockPass::doFinalization(Function &) {
+ // By default, don't do anything.
+ return false;
}
+bool BasicBlockPass::doFinalization(Module &) {
+ // By default, don't do anything.
+ return false;
+}
+
+PassManagerType BasicBlockPass::getPotentialPassManagerType() const {
+ return PMT_BasicBlockPassManager;
+}
//===----------------------------------------------------------------------===//
// Pass Registration mechanism
//
-static std::map<TypeInfo, PassInfo*> *PassInfoMap = 0;
+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 StaticPassInfo*> MapType;
+ MapType PassInfoMap;
+
+ typedef StringMap<const StaticPassInfo*> StringMapType;
+ StringMapType PassInfoStringMap;
+
+ /// AnalysisGroupInfo - Keep track of information for each analysis group.
+ struct AnalysisGroupInfo {
+ std::set<const StaticPassInfo *> Implementations;
+ };
+
+ /// AnalysisGroupInfoMap - Information for each analysis group.
+ std::map<const StaticPassInfo *, AnalysisGroupInfo> AnalysisGroupInfoMap;
+
+public:
+
+ const StaticPassInfo *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 StaticPassInfo *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 StaticPassInfo &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 StaticPassInfo &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(StaticPassInfo *InterfaceInfo,
+ const StaticPassInfo *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 {
- if (PassInfoCache) return PassInfoCache;
- return lookupPassInfo(typeid(*this));
+const StaticPassInfo *Pass::getPassInfo() const {
+ 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 StaticPassInfo *Pass::lookupPassInfo(intptr_t TI) {
+ return getPassRegistrar()->GetPassInfo(TI);
}
-void RegisterPassBase::registerPass(PassInfo *PI) {
- if (PassInfoMap == 0)
- PassInfoMap = new std::map<TypeInfo, PassInfo*>();
+const StaticPassInfo *Pass::lookupPassInfo(StringRef Arg) {
+ return getPassRegistrar()->GetPassInfo(Arg);
+}
- assert(PassInfoMap->find(PI->getTypeInfo()) == PassInfoMap->end() &&
- "Pass already registered!");
- PIObj = PI;
- PassInfoMap->insert(std::make_pair(TypeInfo(PI->getTypeInfo()), PI));
+void PassInfo::registerPass() {
+ getPassRegistrar()->RegisterPass(*this);
- // 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(PI);
+ (*I)->passRegistered(this);
}
-void RegisterPassBase::unregisterPass(PassInfo *PI) {
- assert(PassInfoMap && "Pass registered but not in map!");
- std::map<TypeInfo, PassInfo*>::iterator I =
- PassInfoMap->find(PI->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(PI);
+void PassInfo::unregisterPass() {
+ getPassRegistrar()->UnregisterPass(*this);
+}
- // Delete the PassInfo object itself...
- delete PI;
+Pass *StaticPassInfo::createPass() const {
+ assert((!isAnalysisGroup() || NormalCtor) &&
+ "No default implementation found for analysis group!");
+ assert(NormalCtor &&
+ "Cannot call createPass on PassInfo without default ctor!");
+ return NormalCtor();
}
//===----------------------------------------------------------------------===//
// 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)
- : ImplementationInfo(0), isDefaultImplementation(isDefault) {
-
- InterfaceInfo = const_cast<PassInfo*>(Pass::lookupPassInfo(Interface));
- if (InterfaceInfo == 0) { // First reference to Interface, add it now.
- InterfaceInfo = // Create the new PassInfo for the interface...
- new PassInfo("", "", Interface, PassInfo::AnalysisGroup, 0, 0);
- registerPass(InterfaceInfo);
- PIObj = 0;
+RegisterAGBase::RegisterAGBase(const char *Name, intptr_t InterfaceID,
+ intptr_t PassID, bool isDefault)
+ : PassInfo(Name, InterfaceID) {
+
+ StaticPassInfo *InterfaceInfo =
+ const_cast<StaticPassInfo*>(Pass::lookupPassInfo(InterfaceID));
+ if (InterfaceInfo == 0) {
+ // First reference to Interface, register it now.
+ registerPass();
+ InterfaceInfo = this;
}
- assert(InterfaceInfo->getPassType() == PassInfo::AnalysisGroup &&
+ assert(isAnalysisGroup() &&
"Trying to join an analysis group that is a normal pass!");
- if (Pass) {
- ImplementationInfo = Pass::lookupPassInfo(*Pass);
+ if (PassID) {
+ const StaticPassInfo *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);
+ StaticPassInfo *IIPI = const_cast<StaticPassInfo*>(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());
- }
- }
-}
-
-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;
- }
-
- unregisterPass(InterfaceInfo);
- }
+ getPassRegistrar()->RegisterAnalysisGroup(InterfaceInfo, IIPI, 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);
}
// 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);
+}
+
+PassNameParser::~PassNameParser() {}
+
+//===----------------------------------------------------------------------===//
+// AnalysisUsage Class Implementation
+//
+
+namespace {
+ struct GetCFGOnlyPasses : public PassRegistrationListener {
+ typedef AnalysisUsage::VectorType VectorType;
+ VectorType &CFGOnlyList;
+ GetCFGOnlyPasses(VectorType &L) : CFGOnlyList(L) {}
+
+ void passEnumerate(const StaticPassInfo *P) {
+ if (P->isCFGOnlyPass())
+ CFGOnlyList.push_back(P);
+ }
+ };
+}
+
+// setPreservesCFG - This function should be called to by the pass, iff they do
+// not:
+//
+// 1. Add or remove basic blocks from the function
+// 2. Modify terminator instructions in any way.
+//
+// This function annotates the AnalysisUsage info object to say that analyses
+// that only depend on the CFG are preserved by this pass.
+//
+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...)
+ GetCFGOnlyPasses(Preserved).enumeratePasses();
+}
+
+AnalysisUsage &AnalysisUsage::addRequiredID(AnalysisID ID) {
+ assert(ID && "Pass class not registered!");
+ Required.push_back(ID);
+ return *this;
+}
+
+AnalysisUsage &AnalysisUsage::addRequiredTransitiveID(AnalysisID ID) {
+ assert(ID && "Pass class not registered!");
+ Required.push_back(ID);
+ RequiredTransitive.push_back(ID);
+ return *this;
}
projects / oota-llvm.git / blobdiff