//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "jit"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
-#include "llvm/ModuleProvider.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Config/alloca.h"
-#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MutexGuard.h"
+#include "llvm/Support/ValueHandle.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/System/DynamicLibrary.h"
#include "llvm/System/Host.h"
#include "llvm/Target/TargetData.h"
STATISTIC(NumInitBytes, "Number of bytes of global vars initialized");
STATISTIC(NumGlobals , "Number of global vars initialized");
-ExecutionEngine::EECtorFn ExecutionEngine::JITCtor = 0;
-ExecutionEngine::EECtorFn ExecutionEngine::InterpCtor = 0;
+ExecutionEngine *(*ExecutionEngine::JITCtor)(
+ Module *M,
+ std::string *ErrorStr,
+ JITMemoryManager *JMM,
+ CodeGenOpt::Level OptLevel,
+ bool GVsWithCode,
+ CodeModel::Model CMM,
+ StringRef MArch,
+ StringRef MCPU,
+ const SmallVectorImpl<std::string>& MAttrs) = 0;
+ExecutionEngine *(*ExecutionEngine::InterpCtor)(Module *M,
+ std::string *ErrorStr) = 0;
ExecutionEngine::EERegisterFn ExecutionEngine::ExceptionTableRegister = 0;
-ExecutionEngine::ExecutionEngine(ModuleProvider *P) : LazyFunctionCreator(0) {
- LazyCompilationDisabled = false;
- Modules.push_back(P);
- assert(P && "ModuleProvider is null?");
+ExecutionEngine::ExecutionEngine(Module *M)
+ : EEState(*this),
+ LazyFunctionCreator(0) {
+ CompilingLazily = false;
+ GVCompilationDisabled = false;
+ SymbolSearchingDisabled = false;
+ Modules.push_back(M);
+ assert(M && "Module is null?");
}
ExecutionEngine::~ExecutionEngine() {
delete Modules[i];
}
-/// removeModuleProvider - Remove a ModuleProvider from the list of modules.
-/// Release module from ModuleProvider.
-Module* ExecutionEngine::removeModuleProvider(ModuleProvider *P,
- std::string *ErrInfo) {
- for(SmallVector<ModuleProvider *, 1>::iterator I = Modules.begin(),
+namespace {
+// This class automatically deletes the memory block when the GlobalVariable is
+// destroyed.
+class GVMemoryBlock : public CallbackVH {
+ GVMemoryBlock(const GlobalVariable *GV)
+ : CallbackVH(const_cast<GlobalVariable*>(GV)) {}
+
+public:
+ // Returns the address the GlobalVariable should be written into. The
+ // GVMemoryBlock object prefixes that.
+ static char *Create(const GlobalVariable *GV, const TargetData& TD) {
+ const Type *ElTy = GV->getType()->getElementType();
+ size_t GVSize = (size_t)TD.getTypeAllocSize(ElTy);
+ void *RawMemory = ::operator new(
+ TargetData::RoundUpAlignment(sizeof(GVMemoryBlock),
+ TD.getPreferredAlignment(GV))
+ + GVSize);
+ new(RawMemory) GVMemoryBlock(GV);
+ return static_cast<char*>(RawMemory) + sizeof(GVMemoryBlock);
+ }
+
+ virtual void deleted() {
+ // We allocated with operator new and with some extra memory hanging off the
+ // end, so don't just delete this. I'm not sure if this is actually
+ // required.
+ this->~GVMemoryBlock();
+ ::operator delete(this);
+ }
+};
+} // anonymous namespace
+
+char* ExecutionEngine::getMemoryForGV(const GlobalVariable* GV) {
+ return GVMemoryBlock::Create(GV, *getTargetData());
+}
+
+/// removeModule - Remove a Module from the list of modules.
+bool ExecutionEngine::removeModule(Module *M) {
+ for(SmallVector<Module *, 1>::iterator I = Modules.begin(),
E = Modules.end(); I != E; ++I) {
- ModuleProvider *MP = *I;
- if (MP == P) {
+ Module *Found = *I;
+ if (Found == M) {
Modules.erase(I);
- return MP->releaseModule(ErrInfo);
+ clearGlobalMappingsFromModule(M);
+ return true;
}
}
- return NULL;
+ return false;
}
/// FindFunctionNamed - Search all of the active modules to find the one that
/// general code.
Function *ExecutionEngine::FindFunctionNamed(const char *FnName) {
for (unsigned i = 0, e = Modules.size(); i != e; ++i) {
- if (Function *F = Modules[i]->getModule()->getFunction(FnName))
+ if (Function *F = Modules[i]->getFunction(FnName))
return F;
}
return 0;
}
+void *ExecutionEngineState::RemoveMapping(
+ const MutexGuard &, const GlobalValue *ToUnmap) {
+ GlobalAddressMapTy::iterator I = GlobalAddressMap.find(ToUnmap);
+ void *OldVal;
+ if (I == GlobalAddressMap.end())
+ OldVal = 0;
+ else {
+ OldVal = I->second;
+ GlobalAddressMap.erase(I);
+ }
+
+ GlobalAddressReverseMap.erase(OldVal);
+ return OldVal;
+}
+
/// addGlobalMapping - Tell the execution engine that the specified global is
/// at the specified location. This is used internally as functions are JIT'd
/// and as global variables are laid out in memory. It can and should also be
/// existing data in memory.
void ExecutionEngine::addGlobalMapping(const GlobalValue *GV, void *Addr) {
MutexGuard locked(lock);
-
- void *&CurVal = state.getGlobalAddressMap(locked)[GV];
+
+ DEBUG(dbgs() << "JIT: Map \'" << GV->getName()
+ << "\' to [" << Addr << "]\n";);
+ void *&CurVal = EEState.getGlobalAddressMap(locked)[GV];
assert((CurVal == 0 || Addr == 0) && "GlobalMapping already established!");
CurVal = Addr;
// If we are using the reverse mapping, add it too
- if (!state.getGlobalAddressReverseMap(locked).empty()) {
- const GlobalValue *&V = state.getGlobalAddressReverseMap(locked)[Addr];
+ if (!EEState.getGlobalAddressReverseMap(locked).empty()) {
+ AssertingVH<const GlobalValue> &V =
+ EEState.getGlobalAddressReverseMap(locked)[Addr];
assert((V == 0 || GV == 0) && "GlobalMapping already established!");
V = GV;
}
void ExecutionEngine::clearAllGlobalMappings() {
MutexGuard locked(lock);
- state.getGlobalAddressMap(locked).clear();
- state.getGlobalAddressReverseMap(locked).clear();
+ EEState.getGlobalAddressMap(locked).clear();
+ EEState.getGlobalAddressReverseMap(locked).clear();
+}
+
+/// clearGlobalMappingsFromModule - Clear all global mappings that came from a
+/// particular module, because it has been removed from the JIT.
+void ExecutionEngine::clearGlobalMappingsFromModule(Module *M) {
+ MutexGuard locked(lock);
+
+ for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; ++FI) {
+ EEState.RemoveMapping(locked, FI);
+ }
+ for (Module::global_iterator GI = M->global_begin(), GE = M->global_end();
+ GI != GE; ++GI) {
+ EEState.RemoveMapping(locked, GI);
+ }
}
/// updateGlobalMapping - Replace an existing mapping for GV with a new
void *ExecutionEngine::updateGlobalMapping(const GlobalValue *GV, void *Addr) {
MutexGuard locked(lock);
- std::map<const GlobalValue*, void *> &Map = state.getGlobalAddressMap(locked);
+ ExecutionEngineState::GlobalAddressMapTy &Map =
+ EEState.getGlobalAddressMap(locked);
// Deleting from the mapping?
if (Addr == 0) {
- std::map<const GlobalValue*, void *>::iterator I = Map.find(GV);
- void *OldVal;
- if (I == Map.end())
- OldVal = 0;
- else {
- OldVal = I->second;
- Map.erase(I);
- }
-
- if (!state.getGlobalAddressReverseMap(locked).empty())
- state.getGlobalAddressReverseMap(locked).erase(Addr);
- return OldVal;
+ return EEState.RemoveMapping(locked, GV);
}
void *&CurVal = Map[GV];
void *OldVal = CurVal;
- if (CurVal && !state.getGlobalAddressReverseMap(locked).empty())
- state.getGlobalAddressReverseMap(locked).erase(CurVal);
+ if (CurVal && !EEState.getGlobalAddressReverseMap(locked).empty())
+ EEState.getGlobalAddressReverseMap(locked).erase(CurVal);
CurVal = Addr;
// If we are using the reverse mapping, add it too
- if (!state.getGlobalAddressReverseMap(locked).empty()) {
- const GlobalValue *&V = state.getGlobalAddressReverseMap(locked)[Addr];
+ if (!EEState.getGlobalAddressReverseMap(locked).empty()) {
+ AssertingVH<const GlobalValue> &V =
+ EEState.getGlobalAddressReverseMap(locked)[Addr];
assert((V == 0 || GV == 0) && "GlobalMapping already established!");
V = GV;
}
void *ExecutionEngine::getPointerToGlobalIfAvailable(const GlobalValue *GV) {
MutexGuard locked(lock);
- std::map<const GlobalValue*, void*>::iterator I =
- state.getGlobalAddressMap(locked).find(GV);
- return I != state.getGlobalAddressMap(locked).end() ? I->second : 0;
+ ExecutionEngineState::GlobalAddressMapTy::iterator I =
+ EEState.getGlobalAddressMap(locked).find(GV);
+ return I != EEState.getGlobalAddressMap(locked).end() ? I->second : 0;
}
/// getGlobalValueAtAddress - Return the LLVM global value object that starts
MutexGuard locked(lock);
// If we haven't computed the reverse mapping yet, do so first.
- if (state.getGlobalAddressReverseMap(locked).empty()) {
- for (std::map<const GlobalValue*, void *>::iterator
- I = state.getGlobalAddressMap(locked).begin(),
- E = state.getGlobalAddressMap(locked).end(); I != E; ++I)
- state.getGlobalAddressReverseMap(locked).insert(std::make_pair(I->second,
+ if (EEState.getGlobalAddressReverseMap(locked).empty()) {
+ for (ExecutionEngineState::GlobalAddressMapTy::iterator
+ I = EEState.getGlobalAddressMap(locked).begin(),
+ E = EEState.getGlobalAddressMap(locked).end(); I != E; ++I)
+ EEState.getGlobalAddressReverseMap(locked).insert(std::make_pair(I->second,
I->first));
}
- std::map<void *, const GlobalValue*>::iterator I =
- state.getGlobalAddressReverseMap(locked).find(Addr);
- return I != state.getGlobalAddressReverseMap(locked).end() ? I->second : 0;
+ std::map<void *, AssertingVH<const GlobalValue> >::iterator I =
+ EEState.getGlobalAddressReverseMap(locked).find(Addr);
+ return I != EEState.getGlobalAddressReverseMap(locked).end() ? I->second : 0;
}
-// CreateArgv - Turn a vector of strings into a nice argv style array of
-// pointers to null terminated strings.
-//
-static void *CreateArgv(ExecutionEngine *EE,
- const std::vector<std::string> &InputArgv) {
+namespace {
+class ArgvArray {
+ char *Array;
+ std::vector<char*> Values;
+public:
+ ArgvArray() : Array(NULL) {}
+ ~ArgvArray() { clear(); }
+ void clear() {
+ delete[] Array;
+ Array = NULL;
+ for (size_t I = 0, E = Values.size(); I != E; ++I) {
+ delete[] Values[I];
+ }
+ Values.clear();
+ }
+ /// Turn a vector of strings into a nice argv style array of pointers to null
+ /// terminated strings.
+ void *reset(LLVMContext &C, ExecutionEngine *EE,
+ const std::vector<std::string> &InputArgv);
+};
+} // anonymous namespace
+void *ArgvArray::reset(LLVMContext &C, ExecutionEngine *EE,
+ const std::vector<std::string> &InputArgv) {
+ clear(); // Free the old contents.
unsigned PtrSize = EE->getTargetData()->getPointerSize();
- char *Result = new char[(InputArgv.size()+1)*PtrSize];
+ Array = new char[(InputArgv.size()+1)*PtrSize];
- DOUT << "ARGV = " << (void*)Result << "\n";
- const Type *SBytePtr = PointerType::getUnqual(Type::Int8Ty);
+ DEBUG(dbgs() << "JIT: ARGV = " << (void*)Array << "\n");
+ const Type *SBytePtr = Type::getInt8PtrTy(C);
for (unsigned i = 0; i != InputArgv.size(); ++i) {
unsigned Size = InputArgv[i].size()+1;
char *Dest = new char[Size];
- DOUT << "ARGV[" << i << "] = " << (void*)Dest << "\n";
+ Values.push_back(Dest);
+ DEBUG(dbgs() << "JIT: ARGV[" << i << "] = " << (void*)Dest << "\n");
std::copy(InputArgv[i].begin(), InputArgv[i].end(), Dest);
Dest[Size-1] = 0;
- // Endian safe: Result[i] = (PointerTy)Dest;
- EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i*PtrSize),
+ // Endian safe: Array[i] = (PointerTy)Dest;
+ EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Array+i*PtrSize),
SBytePtr);
}
// Null terminate it
EE->StoreValueToMemory(PTOGV(0),
- (GenericValue*)(Result+InputArgv.size()*PtrSize),
+ (GenericValue*)(Array+InputArgv.size()*PtrSize),
SBytePtr);
- return Result;
+ return Array;
}
/// runStaticConstructorsDestructors - This method is used to execute all of
-/// the static constructors or destructors for a program, depending on the
+/// the static constructors or destructors for a module, depending on the
/// value of isDtors.
-void ExecutionEngine::runStaticConstructorsDestructors(bool isDtors) {
+void ExecutionEngine::runStaticConstructorsDestructors(Module *module,
+ bool isDtors) {
const char *Name = isDtors ? "llvm.global_dtors" : "llvm.global_ctors";
// Execute global ctors/dtors for each module in the program.
- for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
- GlobalVariable *GV = Modules[m]->getModule()->getNamedGlobal(Name);
-
- // If this global has internal linkage, or if it has a use, then it must be
- // an old-style (llvmgcc3) static ctor with __main linked in and in use. If
- // this is the case, don't execute any of the global ctors, __main will do
- // it.
- if (!GV || GV->isDeclaration() || GV->hasInternalLinkage()) continue;
- // Should be an array of '{ int, void ()* }' structs. The first value is
- // the init priority, which we ignore.
- ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
- if (!InitList) continue;
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
- if (ConstantStruct *CS =
- dyn_cast<ConstantStruct>(InitList->getOperand(i))) {
- if (CS->getNumOperands() != 2) break; // Not array of 2-element structs.
-
- Constant *FP = CS->getOperand(1);
- if (FP->isNullValue())
- break; // Found a null terminator, exit.
-
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
- if (CE->isCast())
- FP = CE->getOperand(0);
- if (Function *F = dyn_cast<Function>(FP)) {
- // Execute the ctor/dtor function!
- runFunction(F, std::vector<GenericValue>());
- }
- }
- }
+ GlobalVariable *GV = module->getNamedGlobal(Name);
+
+ // If this global has internal linkage, or if it has a use, then it must be
+ // an old-style (llvmgcc3) static ctor with __main linked in and in use. If
+ // this is the case, don't execute any of the global ctors, __main will do
+ // it.
+ if (!GV || GV->isDeclaration() || GV->hasLocalLinkage()) return;
+
+ // Should be an array of '{ int, void ()* }' structs. The first value is
+ // the init priority, which we ignore.
+ ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
+ if (!InitList) return;
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
+ if (ConstantStruct *CS =
+ dyn_cast<ConstantStruct>(InitList->getOperand(i))) {
+ if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
+
+ Constant *FP = CS->getOperand(1);
+ if (FP->isNullValue())
+ break; // Found a null terminator, exit.
+
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
+ if (CE->isCast())
+ FP = CE->getOperand(0);
+ if (Function *F = dyn_cast<Function>(FP)) {
+ // Execute the ctor/dtor function!
+ runFunction(F, std::vector<GenericValue>());
+ }
+ }
+}
+
+/// runStaticConstructorsDestructors - This method is used to execute all of
+/// the static constructors or destructors for a program, depending on the
+/// value of isDtors.
+void ExecutionEngine::runStaticConstructorsDestructors(bool isDtors) {
+ // Execute global ctors/dtors for each module in the program.
+ for (unsigned m = 0, e = Modules.size(); m != e; ++m)
+ runStaticConstructorsDestructors(Modules[m], isDtors);
}
+#ifndef NDEBUG
/// isTargetNullPtr - Return whether the target pointer stored at Loc is null.
static bool isTargetNullPtr(ExecutionEngine *EE, void *Loc) {
unsigned PtrSize = EE->getTargetData()->getPointerSize();
return false;
return true;
}
+#endif
/// runFunctionAsMain - This is a helper function which wraps runFunction to
/// handle the common task of starting up main with the specified argc, argv,
// Check main() type
unsigned NumArgs = Fn->getFunctionType()->getNumParams();
const FunctionType *FTy = Fn->getFunctionType();
- const Type* PPInt8Ty =
- PointerType::getUnqual(PointerType::getUnqual(Type::Int8Ty));
+ const Type* PPInt8Ty = Type::getInt8PtrTy(Fn->getContext())->getPointerTo();
switch (NumArgs) {
case 3:
if (FTy->getParamType(2) != PPInt8Ty) {
- cerr << "Invalid type for third argument of main() supplied\n";
- abort();
+ llvm_report_error("Invalid type for third argument of main() supplied");
}
// FALLS THROUGH
case 2:
if (FTy->getParamType(1) != PPInt8Ty) {
- cerr << "Invalid type for second argument of main() supplied\n";
- abort();
+ llvm_report_error("Invalid type for second argument of main() supplied");
}
// FALLS THROUGH
case 1:
- if (FTy->getParamType(0) != Type::Int32Ty) {
- cerr << "Invalid type for first argument of main() supplied\n";
- abort();
+ if (!FTy->getParamType(0)->isIntegerTy(32)) {
+ llvm_report_error("Invalid type for first argument of main() supplied");
}
// FALLS THROUGH
case 0:
- if (FTy->getReturnType() != Type::Int32Ty &&
- FTy->getReturnType() != Type::VoidTy) {
- cerr << "Invalid return type of main() supplied\n";
- abort();
+ if (!FTy->getReturnType()->isIntegerTy() &&
+ !FTy->getReturnType()->isVoidTy()) {
+ llvm_report_error("Invalid return type of main() supplied");
}
break;
default:
- cerr << "Invalid number of arguments of main() supplied\n";
- abort();
+ llvm_report_error("Invalid number of arguments of main() supplied");
}
+ ArgvArray CArgv;
+ ArgvArray CEnv;
if (NumArgs) {
GVArgs.push_back(GVArgc); // Arg #0 = argc.
if (NumArgs > 1) {
- GVArgs.push_back(PTOGV(CreateArgv(this, argv))); // Arg #1 = argv.
+ // Arg #1 = argv.
+ GVArgs.push_back(PTOGV(CArgv.reset(Fn->getContext(), this, argv)));
assert(!isTargetNullPtr(this, GVTOP(GVArgs[1])) &&
"argv[0] was null after CreateArgv");
if (NumArgs > 2) {
std::vector<std::string> EnvVars;
for (unsigned i = 0; envp[i]; ++i)
EnvVars.push_back(envp[i]);
- GVArgs.push_back(PTOGV(CreateArgv(this, EnvVars))); // Arg #2 = envp.
+ // Arg #2 = envp.
+ GVArgs.push_back(PTOGV(CEnv.reset(Fn->getContext(), this, EnvVars)));
}
}
}
/// Interpreter or there's an error. If even an Interpreter cannot be created,
/// NULL is returned.
///
-ExecutionEngine *ExecutionEngine::create(ModuleProvider *MP,
+ExecutionEngine *ExecutionEngine::create(Module *M,
bool ForceInterpreter,
- std::string *ErrorStr) {
- ExecutionEngine *EE = 0;
+ std::string *ErrorStr,
+ CodeGenOpt::Level OptLevel,
+ bool GVsWithCode) {
+ return EngineBuilder(M)
+ .setEngineKind(ForceInterpreter
+ ? EngineKind::Interpreter
+ : EngineKind::JIT)
+ .setErrorStr(ErrorStr)
+ .setOptLevel(OptLevel)
+ .setAllocateGVsWithCode(GVsWithCode)
+ .create();
+}
+ExecutionEngine *EngineBuilder::create() {
// Make sure we can resolve symbols in the program as well. The zero arg
// to the function tells DynamicLibrary to load the program, not a library.
if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr))
return 0;
- // Unless the interpreter was explicitly selected, try making a JIT.
- if (!ForceInterpreter && JITCtor)
- EE = JITCtor(MP, ErrorStr);
+ // If the user specified a memory manager but didn't specify which engine to
+ // create, we assume they only want the JIT, and we fail if they only want
+ // the interpreter.
+ if (JMM) {
+ if (WhichEngine & EngineKind::JIT)
+ WhichEngine = EngineKind::JIT;
+ else {
+ if (ErrorStr)
+ *ErrorStr = "Cannot create an interpreter with a memory manager.";
+ return 0;
+ }
+ }
- // If we can't make a JIT, make an interpreter instead.
- if (EE == 0 && InterpCtor)
- EE = InterpCtor(MP, ErrorStr);
+ // Unless the interpreter was explicitly selected or the JIT is not linked,
+ // try making a JIT.
+ if (WhichEngine & EngineKind::JIT) {
+ if (ExecutionEngine::JITCtor) {
+ ExecutionEngine *EE =
+ ExecutionEngine::JITCtor(M, ErrorStr, JMM, OptLevel,
+ AllocateGVsWithCode, CMModel,
+ MArch, MCPU, MAttrs);
+ if (EE) return EE;
+ }
+ }
- return EE;
-}
+ // If we can't make a JIT and we didn't request one specifically, try making
+ // an interpreter instead.
+ if (WhichEngine & EngineKind::Interpreter) {
+ if (ExecutionEngine::InterpCtor)
+ return ExecutionEngine::InterpCtor(M, ErrorStr);
+ if (ErrorStr)
+ *ErrorStr = "Interpreter has not been linked in.";
+ return 0;
+ }
-ExecutionEngine *ExecutionEngine::create(Module *M) {
- return create(new ExistingModuleProvider(M));
+ if ((WhichEngine & EngineKind::JIT) && ExecutionEngine::JITCtor == 0) {
+ if (ErrorStr)
+ *ErrorStr = "JIT has not been linked in.";
+ }
+ return 0;
}
/// getPointerToGlobal - This returns the address of the specified global
return getPointerToFunction(F);
MutexGuard locked(lock);
- void *p = state.getGlobalAddressMap(locked)[GV];
+ void *p = EEState.getGlobalAddressMap(locked)[GV];
if (p)
return p;
const_cast<GlobalVariable *>(dyn_cast<GlobalVariable>(GV)))
EmitGlobalVariable(GVar);
else
- assert(0 && "Global hasn't had an address allocated yet!");
- return state.getGlobalAddressMap(locked)[GV];
+ llvm_unreachable("Global hasn't had an address allocated yet!");
+ return EEState.getGlobalAddressMap(locked)[GV];
}
/// This function converts a Constant* into a GenericValue. The interesting
/// @brief Get a GenericValue for a Constant*
GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
// If its undefined, return the garbage.
- if (isa<UndefValue>(C))
- return GenericValue();
+ if (isa<UndefValue>(C)) {
+ GenericValue Result;
+ switch (C->getType()->getTypeID()) {
+ case Type::IntegerTyID:
+ case Type::X86_FP80TyID:
+ case Type::FP128TyID:
+ case Type::PPC_FP128TyID:
+ // Although the value is undefined, we still have to construct an APInt
+ // with the correct bit width.
+ Result.IntVal = APInt(C->getType()->getPrimitiveSizeInBits(), 0);
+ break;
+ default:
+ break;
+ }
+ return Result;
+ }
// If the value is a ConstantExpr
if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
}
case Instruction::UIToFP: {
GenericValue GV = getConstantValue(Op0);
- if (CE->getType() == Type::FloatTy)
+ if (CE->getType()->isFloatTy())
GV.FloatVal = float(GV.IntVal.roundToDouble());
- else if (CE->getType() == Type::DoubleTy)
+ else if (CE->getType()->isDoubleTy())
GV.DoubleVal = GV.IntVal.roundToDouble();
- else if (CE->getType() == Type::X86_FP80Ty) {
+ else if (CE->getType()->isX86_FP80Ty()) {
const uint64_t zero[] = {0, 0};
APFloat apf = APFloat(APInt(80, 2, zero));
(void)apf.convertFromAPInt(GV.IntVal,
false,
APFloat::rmNearestTiesToEven);
- GV.IntVal = apf.convertToAPInt();
+ GV.IntVal = apf.bitcastToAPInt();
}
return GV;
}
case Instruction::SIToFP: {
GenericValue GV = getConstantValue(Op0);
- if (CE->getType() == Type::FloatTy)
+ if (CE->getType()->isFloatTy())
GV.FloatVal = float(GV.IntVal.signedRoundToDouble());
- else if (CE->getType() == Type::DoubleTy)
+ else if (CE->getType()->isDoubleTy())
GV.DoubleVal = GV.IntVal.signedRoundToDouble();
- else if (CE->getType() == Type::X86_FP80Ty) {
+ else if (CE->getType()->isX86_FP80Ty()) {
const uint64_t zero[] = { 0, 0};
APFloat apf = APFloat(APInt(80, 2, zero));
(void)apf.convertFromAPInt(GV.IntVal,
true,
APFloat::rmNearestTiesToEven);
- GV.IntVal = apf.convertToAPInt();
+ GV.IntVal = apf.bitcastToAPInt();
}
return GV;
}
case Instruction::FPToSI: {
GenericValue GV = getConstantValue(Op0);
uint32_t BitWidth = cast<IntegerType>(CE->getType())->getBitWidth();
- if (Op0->getType() == Type::FloatTy)
+ if (Op0->getType()->isFloatTy())
GV.IntVal = APIntOps::RoundFloatToAPInt(GV.FloatVal, BitWidth);
- else if (Op0->getType() == Type::DoubleTy)
+ else if (Op0->getType()->isDoubleTy())
GV.IntVal = APIntOps::RoundDoubleToAPInt(GV.DoubleVal, BitWidth);
- else if (Op0->getType() == Type::X86_FP80Ty) {
+ else if (Op0->getType()->isX86_FP80Ty()) {
APFloat apf = APFloat(GV.IntVal);
uint64_t v;
+ bool ignored;
(void)apf.convertToInteger(&v, BitWidth,
CE->getOpcode()==Instruction::FPToSI,
- APFloat::rmTowardZero);
+ APFloat::rmTowardZero, &ignored);
GV.IntVal = v; // endian?
}
return GV;
GenericValue GV = getConstantValue(Op0);
const Type* DestTy = CE->getType();
switch (Op0->getType()->getTypeID()) {
- default: assert(0 && "Invalid bitcast operand");
+ default: llvm_unreachable("Invalid bitcast operand");
case Type::IntegerTyID:
- assert(DestTy->isFloatingPoint() && "invalid bitcast");
- if (DestTy == Type::FloatTy)
+ assert(DestTy->isFloatingPointTy() && "invalid bitcast");
+ if (DestTy->isFloatTy())
GV.FloatVal = GV.IntVal.bitsToFloat();
- else if (DestTy == Type::DoubleTy)
+ else if (DestTy->isDoubleTy())
GV.DoubleVal = GV.IntVal.bitsToDouble();
break;
case Type::FloatTyID:
- assert(DestTy == Type::Int32Ty && "Invalid bitcast");
+ assert(DestTy->isIntegerTy(32) && "Invalid bitcast");
GV.IntVal.floatToBits(GV.FloatVal);
break;
case Type::DoubleTyID:
- assert(DestTy == Type::Int64Ty && "Invalid bitcast");
+ assert(DestTy->isIntegerTy(64) && "Invalid bitcast");
GV.IntVal.doubleToBits(GV.DoubleVal);
break;
case Type::PointerTyID:
- assert(isa<PointerType>(DestTy) && "Invalid bitcast");
+ assert(DestTy->isPointerTy() && "Invalid bitcast");
break; // getConstantValue(Op0) above already converted it
}
return GV;
}
case Instruction::Add:
+ case Instruction::FAdd:
case Instruction::Sub:
+ case Instruction::FSub:
case Instruction::Mul:
+ case Instruction::FMul:
case Instruction::UDiv:
case Instruction::SDiv:
case Instruction::URem:
GenericValue RHS = getConstantValue(CE->getOperand(1));
GenericValue GV;
switch (CE->getOperand(0)->getType()->getTypeID()) {
- default: assert(0 && "Bad add type!"); abort();
+ default: llvm_unreachable("Bad add type!");
case Type::IntegerTyID:
switch (CE->getOpcode()) {
- default: assert(0 && "Invalid integer opcode");
+ default: llvm_unreachable("Invalid integer opcode");
case Instruction::Add: GV.IntVal = LHS.IntVal + RHS.IntVal; break;
case Instruction::Sub: GV.IntVal = LHS.IntVal - RHS.IntVal; break;
case Instruction::Mul: GV.IntVal = LHS.IntVal * RHS.IntVal; break;
break;
case Type::FloatTyID:
switch (CE->getOpcode()) {
- default: assert(0 && "Invalid float opcode"); abort();
- case Instruction::Add:
+ default: llvm_unreachable("Invalid float opcode");
+ case Instruction::FAdd:
GV.FloatVal = LHS.FloatVal + RHS.FloatVal; break;
- case Instruction::Sub:
+ case Instruction::FSub:
GV.FloatVal = LHS.FloatVal - RHS.FloatVal; break;
- case Instruction::Mul:
+ case Instruction::FMul:
GV.FloatVal = LHS.FloatVal * RHS.FloatVal; break;
case Instruction::FDiv:
GV.FloatVal = LHS.FloatVal / RHS.FloatVal; break;
break;
case Type::DoubleTyID:
switch (CE->getOpcode()) {
- default: assert(0 && "Invalid double opcode"); abort();
- case Instruction::Add:
+ default: llvm_unreachable("Invalid double opcode");
+ case Instruction::FAdd:
GV.DoubleVal = LHS.DoubleVal + RHS.DoubleVal; break;
- case Instruction::Sub:
+ case Instruction::FSub:
GV.DoubleVal = LHS.DoubleVal - RHS.DoubleVal; break;
- case Instruction::Mul:
+ case Instruction::FMul:
GV.DoubleVal = LHS.DoubleVal * RHS.DoubleVal; break;
case Instruction::FDiv:
GV.DoubleVal = LHS.DoubleVal / RHS.DoubleVal; break;
case Type::FP128TyID: {
APFloat apfLHS = APFloat(LHS.IntVal);
switch (CE->getOpcode()) {
- default: assert(0 && "Invalid long double opcode"); abort();
- case Instruction::Add:
+ default: llvm_unreachable("Invalid long double opcode");llvm_unreachable(0);
+ case Instruction::FAdd:
apfLHS.add(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
- GV.IntVal = apfLHS.convertToAPInt();
+ GV.IntVal = apfLHS.bitcastToAPInt();
break;
- case Instruction::Sub:
+ case Instruction::FSub:
apfLHS.subtract(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
- GV.IntVal = apfLHS.convertToAPInt();
+ GV.IntVal = apfLHS.bitcastToAPInt();
break;
- case Instruction::Mul:
+ case Instruction::FMul:
apfLHS.multiply(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
- GV.IntVal = apfLHS.convertToAPInt();
+ GV.IntVal = apfLHS.bitcastToAPInt();
break;
case Instruction::FDiv:
apfLHS.divide(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
- GV.IntVal = apfLHS.convertToAPInt();
+ GV.IntVal = apfLHS.bitcastToAPInt();
break;
case Instruction::FRem:
apfLHS.mod(APFloat(RHS.IntVal), APFloat::rmNearestTiesToEven);
- GV.IntVal = apfLHS.convertToAPInt();
+ GV.IntVal = apfLHS.bitcastToAPInt();
break;
}
}
default:
break;
}
- cerr << "ConstantExpr not handled: " << *CE << "\n";
- abort();
+ std::string msg;
+ raw_string_ostream Msg(msg);
+ Msg << "ConstantExpr not handled: " << *CE;
+ llvm_report_error(Msg.str());
}
GenericValue Result;
case Type::X86_FP80TyID:
case Type::FP128TyID:
case Type::PPC_FP128TyID:
- Result.IntVal = cast <ConstantFP>(C)->getValueAPF().convertToAPInt();
+ Result.IntVal = cast <ConstantFP>(C)->getValueAPF().bitcastToAPInt();
break;
case Type::IntegerTyID:
Result.IntVal = cast<ConstantInt>(C)->getValue();
Result.PointerVal = 0;
else if (const Function *F = dyn_cast<Function>(C))
Result = PTOGV(getPointerToFunctionOrStub(const_cast<Function*>(F)));
- else if (const GlobalVariable* GV = dyn_cast<GlobalVariable>(C))
+ else if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(C))
Result = PTOGV(getOrEmitGlobalVariable(const_cast<GlobalVariable*>(GV)));
+ else if (const BlockAddress *BA = dyn_cast<BlockAddress>(C))
+ Result = PTOGV(getPointerToBasicBlock(const_cast<BasicBlock*>(
+ BA->getBasicBlock())));
else
- assert(0 && "Unknown constant pointer type!");
+ llvm_unreachable("Unknown constant pointer type!");
break;
default:
- cerr << "ERROR: Constant unimplemented for type: " << *C->getType() << "\n";
- abort();
+ std::string msg;
+ raw_string_ostream Msg(msg);
+ Msg << "ERROR: Constant unimplemented for type: " << *C->getType();
+ llvm_report_error(Msg.str());
}
return Result;
}
assert((IntVal.getBitWidth()+7)/8 >= StoreBytes && "Integer too small!");
uint8_t *Src = (uint8_t *)IntVal.getRawData();
- if (sys::littleEndianHost())
+ if (sys::isLittleEndianHost())
// Little-endian host - the source is ordered from LSB to MSB. Order the
// destination from LSB to MSB: Do a straight copy.
memcpy(Dst, Src, StoreBytes);
/// is the address of the memory at which to store Val, cast to GenericValue *.
/// It is not a pointer to a GenericValue containing the address at which to
/// store Val.
-void ExecutionEngine::StoreValueToMemory(const GenericValue &Val, GenericValue *Ptr,
- const Type *Ty) {
+void ExecutionEngine::StoreValueToMemory(const GenericValue &Val,
+ GenericValue *Ptr, const Type *Ty) {
const unsigned StoreBytes = getTargetData()->getTypeStoreSize(Ty);
switch (Ty->getTypeID()) {
case Type::DoubleTyID:
*((double*)Ptr) = Val.DoubleVal;
break;
- case Type::X86_FP80TyID: {
- uint16_t *Dest = (uint16_t*)Ptr;
- const uint16_t *Src = (uint16_t*)Val.IntVal.getRawData();
- // This is endian dependent, but it will only work on x86 anyway.
- Dest[0] = Src[4];
- Dest[1] = Src[0];
- Dest[2] = Src[1];
- Dest[3] = Src[2];
- Dest[4] = Src[3];
- break;
- }
+ case Type::X86_FP80TyID:
+ memcpy(Ptr, Val.IntVal.getRawData(), 10);
+ break;
case Type::PointerTyID:
// Ensure 64 bit target pointers are fully initialized on 32 bit hosts.
if (StoreBytes != sizeof(PointerTy))
*((PointerTy*)Ptr) = Val.PointerVal;
break;
default:
- cerr << "Cannot store value of type " << *Ty << "!\n";
+ dbgs() << "Cannot store value of type " << *Ty << "!\n";
}
- if (sys::littleEndianHost() != getTargetData()->isLittleEndian())
+ if (sys::isLittleEndianHost() != getTargetData()->isLittleEndian())
// Host and target are different endian - reverse the stored bytes.
std::reverse((uint8_t*)Ptr, StoreBytes + (uint8_t*)Ptr);
}
assert((IntVal.getBitWidth()+7)/8 >= LoadBytes && "Integer too small!");
uint8_t *Dst = (uint8_t *)IntVal.getRawData();
- if (sys::littleEndianHost())
+ if (sys::isLittleEndianHost())
// Little-endian host - the destination must be ordered from LSB to MSB.
// The source is ordered from LSB to MSB: Do a straight copy.
memcpy(Dst, Src, LoadBytes);
const Type *Ty) {
const unsigned LoadBytes = getTargetData()->getTypeStoreSize(Ty);
- if (sys::littleEndianHost() != getTargetData()->isLittleEndian()) {
- // Host and target are different endian - reverse copy the stored
- // bytes into a buffer, and load from that.
- uint8_t *Src = (uint8_t*)Ptr;
- uint8_t *Buf = (uint8_t*)alloca(LoadBytes);
- std::reverse_copy(Src, Src + LoadBytes, Buf);
- Ptr = (GenericValue*)Buf;
- }
-
switch (Ty->getTypeID()) {
case Type::IntegerTyID:
// An APInt with all words initially zero.
case Type::X86_FP80TyID: {
// This is endian dependent, but it will only work on x86 anyway.
// FIXME: Will not trap if loading a signaling NaN.
- uint16_t *p = (uint16_t*)Ptr;
- union {
- uint16_t x[8];
- uint64_t y[2];
- };
- x[0] = p[1];
- x[1] = p[2];
- x[2] = p[3];
- x[3] = p[4];
- x[4] = p[0];
+ uint64_t y[2];
+ memcpy(y, Ptr, 10);
Result.IntVal = APInt(80, 2, y);
break;
}
default:
- cerr << "Cannot load value of type " << *Ty << "!\n";
- abort();
+ std::string msg;
+ raw_string_ostream Msg(msg);
+ Msg << "Cannot load value of type " << *Ty << "!";
+ llvm_report_error(Msg.str());
}
}
// specified memory location...
//
void ExecutionEngine::InitializeMemory(const Constant *Init, void *Addr) {
+ DEBUG(dbgs() << "JIT: Initializing " << Addr << " ");
+ DEBUG(Init->dump());
if (isa<UndefValue>(Init)) {
return;
} else if (const ConstantVector *CP = dyn_cast<ConstantVector>(Init)) {
unsigned ElementSize =
- getTargetData()->getABITypeSize(CP->getType()->getElementType());
+ getTargetData()->getTypeAllocSize(CP->getType()->getElementType());
for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i)
InitializeMemory(CP->getOperand(i), (char*)Addr+i*ElementSize);
return;
} else if (isa<ConstantAggregateZero>(Init)) {
- memset(Addr, 0, (size_t)getTargetData()->getABITypeSize(Init->getType()));
+ memset(Addr, 0, (size_t)getTargetData()->getTypeAllocSize(Init->getType()));
return;
- } else if (Init->getType()->isFirstClassType()) {
- GenericValue Val = getConstantValue(Init);
- StoreValueToMemory(Val, (GenericValue*)Addr, Init->getType());
- return;
- }
-
- switch (Init->getType()->getTypeID()) {
- case Type::ArrayTyID: {
- const ConstantArray *CPA = cast<ConstantArray>(Init);
+ } else if (const ConstantArray *CPA = dyn_cast<ConstantArray>(Init)) {
unsigned ElementSize =
- getTargetData()->getABITypeSize(CPA->getType()->getElementType());
+ getTargetData()->getTypeAllocSize(CPA->getType()->getElementType());
for (unsigned i = 0, e = CPA->getNumOperands(); i != e; ++i)
InitializeMemory(CPA->getOperand(i), (char*)Addr+i*ElementSize);
return;
- }
-
- case Type::StructTyID: {
- const ConstantStruct *CPS = cast<ConstantStruct>(Init);
+ } else if (const ConstantStruct *CPS = dyn_cast<ConstantStruct>(Init)) {
const StructLayout *SL =
getTargetData()->getStructLayout(cast<StructType>(CPS->getType()));
for (unsigned i = 0, e = CPS->getNumOperands(); i != e; ++i)
InitializeMemory(CPS->getOperand(i), (char*)Addr+SL->getElementOffset(i));
return;
+ } else if (Init->getType()->isFirstClassType()) {
+ GenericValue Val = getConstantValue(Init);
+ StoreValueToMemory(Val, (GenericValue*)Addr, Init->getType());
+ return;
}
- default:
- cerr << "Bad Type: " << *Init->getType() << "\n";
- assert(0 && "Unknown constant type to initialize memory with!");
- }
+ dbgs() << "Bad Type: " << *Init->getType() << "\n";
+ llvm_unreachable("Unknown constant type to initialize memory with!");
}
/// EmitGlobals - Emit all of the global variables to memory, storing their
/// their initializers into the memory.
///
void ExecutionEngine::emitGlobals() {
- const TargetData *TD = getTargetData();
// Loop over all of the global variables in the program, allocating the memory
// to hold them. If there is more than one module, do a prepass over globals
if (Modules.size() != 1) {
for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
- Module &M = *Modules[m]->getModule();
+ Module &M = *Modules[m];
for (Module::const_global_iterator I = M.global_begin(),
E = M.global_end(); I != E; ++I) {
const GlobalValue *GV = I;
- if (GV->hasInternalLinkage() || GV->isDeclaration() ||
+ if (GV->hasLocalLinkage() || GV->isDeclaration() ||
GV->hasAppendingLinkage() || !GV->hasName())
continue;// Ignore external globals and globals with internal linkage.
std::vector<const GlobalValue*> NonCanonicalGlobals;
for (unsigned m = 0, e = Modules.size(); m != e; ++m) {
- Module &M = *Modules[m]->getModule();
+ Module &M = *Modules[m];
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
// In the multi-module case, see what this global maps to.
}
if (!I->isDeclaration()) {
- // Get the type of the global.
- const Type *Ty = I->getType()->getElementType();
-
- // Allocate some memory for it!
- unsigned Size = TD->getABITypeSize(Ty);
- addGlobalMapping(I, new char[Size]);
+ addGlobalMapping(I, getMemoryForGV(I));
} else {
// External variable reference. Try to use the dynamic loader to
// get a pointer to it.
if (void *SymAddr =
- sys::DynamicLibrary::SearchForAddressOfSymbol(I->getName().c_str()))
+ sys::DynamicLibrary::SearchForAddressOfSymbol(I->getName()))
addGlobalMapping(I, SymAddr);
else {
- cerr << "Could not resolve external global address: "
- << I->getName() << "\n";
- abort();
+ llvm_report_error("Could not resolve external global address: "
+ +I->getName());
}
}
}
LinkedGlobalsMap[std::make_pair(GV->getName(), GV->getType())];
void *Ptr = getPointerToGlobalIfAvailable(CGV);
assert(Ptr && "Canonical global wasn't codegen'd!");
- addGlobalMapping(GV, getPointerToGlobalIfAvailable(CGV));
+ addGlobalMapping(GV, Ptr);
}
}
// already in the map.
void ExecutionEngine::EmitGlobalVariable(const GlobalVariable *GV) {
void *GA = getPointerToGlobalIfAvailable(GV);
- DOUT << "Global '" << GV->getName() << "' -> " << GA << "\n";
- const Type *ElTy = GV->getType()->getElementType();
- size_t GVSize = (size_t)getTargetData()->getABITypeSize(ElTy);
if (GA == 0) {
// If it's not already specified, allocate memory for the global.
- GA = new char[GVSize];
+ GA = getMemoryForGV(GV);
addGlobalMapping(GV, GA);
}
-
- InitializeMemory(GV->getInitializer(), GA);
+
+ // Don't initialize if it's thread local, let the client do it.
+ if (!GV->isThreadLocal())
+ InitializeMemory(GV->getInitializer(), GA);
+
+ const Type *ElTy = GV->getType()->getElementType();
+ size_t GVSize = (size_t)getTargetData()->getTypeAllocSize(ElTy);
NumInitBytes += (unsigned)GVSize;
++NumGlobals;
}
+
+ExecutionEngineState::ExecutionEngineState(ExecutionEngine &EE)
+ : EE(EE), GlobalAddressMap(this) {
+}
+
+sys::Mutex *ExecutionEngineState::AddressMapConfig::getMutex(
+ ExecutionEngineState *EES) {
+ return &EES->EE.lock;
+}
+void ExecutionEngineState::AddressMapConfig::onDelete(
+ ExecutionEngineState *EES, const GlobalValue *Old) {
+ void *OldVal = EES->GlobalAddressMap.lookup(Old);
+ EES->GlobalAddressReverseMap.erase(OldVal);
+}
+
+void ExecutionEngineState::AddressMapConfig::onRAUW(
+ ExecutionEngineState *, const GlobalValue *, const GlobalValue *) {
+ assert(false && "The ExecutionEngine doesn't know how to handle a"
+ " RAUW on a value it has a global mapping for.");
+}