#include "llvm/ADT/Triple.h"
#include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
+#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
-#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
#include "llvm/IR/LLVMContext.h"
typedef orc::JITCompileCallbackManagerBase CompileCallbackMgr;
typedef orc::ObjectLinkingLayer<> ObjLayerT;
typedef orc::IRCompileLayer<ObjLayerT> CompileLayerT;
- typedef orc::LazyEmittingLayer<CompileLayerT> LazyEmitLayerT;
- typedef orc::CompileOnDemandLayer<LazyEmitLayerT,
- CompileCallbackMgr> CODLayerT;
+ typedef std::function<std::unique_ptr<Module>(std::unique_ptr<Module>)>
+ TransformFtor;
+ typedef orc::IRTransformLayer<CompileLayerT, TransformFtor> IRDumpLayerT;
+ typedef orc::CompileOnDemandLayer<IRDumpLayerT, CompileCallbackMgr> CODLayerT;
typedef CODLayerT::ModuleSetHandleT ModuleHandleT;
typedef std::function<
- std::unique_ptr<CompileCallbackMgr>(CompileLayerT&,
+ std::unique_ptr<CompileCallbackMgr>(IRDumpLayerT&,
RuntimeDyld::MemoryManager&,
LLVMContext&)>
CallbackManagerBuilder;
OrcLazyJIT(std::unique_ptr<TargetMachine> TM, LLVMContext &Context,
CallbackManagerBuilder &BuildCallbackMgr)
: TM(std::move(TM)),
- Mang(this->TM->getDataLayout()),
ObjectLayer(),
CompileLayer(ObjectLayer, orc::SimpleCompiler(*this->TM)),
- LazyEmitLayer(CompileLayer),
- CCMgr(BuildCallbackMgr(CompileLayer, CCMgrMemMgr, Context)),
- CODLayer(LazyEmitLayer, *CCMgr) { }
+ IRDumpLayer(CompileLayer, createDebugDumper()),
+ CCMgr(BuildCallbackMgr(IRDumpLayer, CCMgrMemMgr, Context)),
+ CODLayer(IRDumpLayer, *CCMgr, false),
+ CXXRuntimeOverrides([this](const std::string &S) { return mangle(S); }) {}
+
+ ~OrcLazyJIT() {
+ // Run any destructors registered with __cxa_atexit.
+ CXXRuntimeOverrides.runDestructors();
+ // Run any IR destructors.
+ for (auto &DtorRunner : IRStaticDestructorRunners)
+ DtorRunner.runViaLayer(CODLayer);
+ }
+
+ template <typename PtrTy>
+ static PtrTy fromTargetAddress(orc::TargetAddress Addr) {
+ return reinterpret_cast<PtrTy>(static_cast<uintptr_t>(Addr));
+ }
ModuleHandleT addModule(std::unique_ptr<Module> M) {
// Attach a data-layout if one isn't already present.
if (M->getDataLayout().isDefault())
M->setDataLayout(*TM->getDataLayout());
+ // Record the static constructors and destructors. We have to do this before
+ // we hand over ownership of the module to the JIT.
+ std::vector<std::string> CtorNames, DtorNames;
+ for (auto Ctor : orc::getConstructors(*M))
+ CtorNames.push_back(mangle(Ctor.Func->getName()));
+ for (auto Dtor : orc::getDestructors(*M))
+ DtorNames.push_back(mangle(Dtor.Func->getName()));
+
+ // Symbol resolution order:
+ // 1) Search the JIT symbols.
+ // 2) Check for C++ runtime overrides.
+ // 3) Search the host process (LLI)'s symbol table.
+ std::shared_ptr<RuntimeDyld::SymbolResolver> Resolver =
+ orc::createLambdaResolver(
+ [this](const std::string &Name) {
+ if (auto Sym = CODLayer.findSymbol(Name, true))
+ return RuntimeDyld::SymbolInfo(Sym.getAddress(),
+ Sym.getFlags());
+ if (auto Sym = CXXRuntimeOverrides.searchOverrides(Name))
+ return Sym;
+
+ if (auto Addr =
+ RTDyldMemoryManager::getSymbolAddressInProcess(Name))
+ return RuntimeDyld::SymbolInfo(Addr, JITSymbolFlags::Exported);
+
+ return RuntimeDyld::SymbolInfo(nullptr);
+ },
+ [](const std::string &Name) {
+ return RuntimeDyld::SymbolInfo(nullptr);
+ }
+ );
+
+ // Add the module to the JIT.
std::vector<std::unique_ptr<Module>> S;
S.push_back(std::move(M));
- auto FallbackLookup =
- [](const std::string &Name) {
- if (auto Addr = RTDyldMemoryManager::getSymbolAddressInProcess(Name))
- return RuntimeDyld::SymbolInfo(Addr, JITSymbolFlags::Exported);
- return RuntimeDyld::SymbolInfo(nullptr);
- };
- return CODLayer.addModuleSet(std::move(S), std::move(FallbackLookup));
+ auto H = CODLayer.addModuleSet(std::move(S), nullptr, std::move(Resolver));
+
+ // Run the static constructors, and save the static destructor runner for
+ // execution when the JIT is torn down.
+ orc::CtorDtorRunner<CODLayerT> CtorRunner(std::move(CtorNames), H);
+ CtorRunner.runViaLayer(CODLayer);
+
+ IRStaticDestructorRunners.emplace_back(std::move(DtorNames), H);
+
+ return H;
}
orc::JITSymbol findSymbol(const std::string &Name) {
std::string MangledName;
{
raw_string_ostream MangledNameStream(MangledName);
- Mang.getNameWithPrefix(MangledNameStream, Name);
+ Mangler::getNameWithPrefix(MangledNameStream, Name, *TM->getDataLayout());
}
return MangledName;
}
+ static TransformFtor createDebugDumper();
+
std::unique_ptr<TargetMachine> TM;
- Mangler Mang;
SectionMemoryManager CCMgrMemMgr;
ObjLayerT ObjectLayer;
CompileLayerT CompileLayer;
- LazyEmitLayerT LazyEmitLayer;
+ IRDumpLayerT IRDumpLayer;
std::unique_ptr<CompileCallbackMgr> CCMgr;
CODLayerT CODLayer;
+
+ orc::LocalCXXRuntimeOverrides CXXRuntimeOverrides;
+ std::vector<orc::CtorDtorRunner<CODLayerT>> IRStaticDestructorRunners;
};
int runOrcLazyJIT(std::unique_ptr<Module> M, int ArgC, char* ArgV[]);