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#ifndef LLVM_EXAMPLES_THINLTOJIT_THINLTOJIT_H
#define LLVM_EXAMPLES_THINLTOJIT_THINLTOJIT_H
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ExecutionEngine/Orc/Core.h"
#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
#include "llvm/ExecutionEngine/Orc/SymbolStringPool.h"
#include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ThreadPool.h"
#include <functional>
#include <memory>
#include <string>
#include <thread>
#include <vector>
namespace llvm {
namespace orc {
class ThinLtoDiscoveryThread;
class ThinLtoInstrumentationLayer;
class ThinLtoModuleIndex;
class CompileOnDemandLayer;
class IRCompileLayer;
class RTDyldObjectLinkingLayer;
class JITDylib;
class JITTargetMachineBuilder;
class LazyCallThroughManager;
class MangleAndInterner;
class ThinLtoJIT {
public:
using AddModuleFunction = std::function<Error(ThreadSafeModule)>;
enum ExplicitMemoryBarrier {
NeverFence = 0,
FenceStaticCode = 1,
FenceJITedCode = 2,
AlwaysFence = 3
};
ThinLtoJIT(ArrayRef<std::string> InputFiles, StringRef MainFunctionName,
unsigned LookaheadLevels, unsigned NumCompileThreads,
unsigned NumLoadThreads, unsigned DiscoveryFlagsPerBucket,
ExplicitMemoryBarrier MemFence, bool AllowNudgeIntoDiscovery,
bool PrintStats, Error &Err);
~ThinLtoJIT();
ThinLtoJIT(const ThinLtoJIT &) = delete;
ThinLtoJIT &operator=(const ThinLtoJIT &) = delete;
ThinLtoJIT(ThinLtoJIT &&) = delete;
ThinLtoJIT &operator=(ThinLtoJIT &&) = delete;
Expected<int> main(ArrayRef<std::string> Args) {
auto MainSym = ES.lookup({MainJD}, MainFunctionMangled);
if (!MainSym)
return MainSym.takeError();
using MainFn = int(int, char *[]);
auto Main = jitTargetAddressToFunction<MainFn *>(MainSym->getAddress());
return runAsMain(Main, Args, StringRef("ThinLtoJIT"));
}
private:
ExecutionSession ES;
DataLayout DL{""};
JITDylib *MainJD;
SymbolStringPtr MainFunctionMangled;
std::unique_ptr<ThreadPool> CompileThreads;
std::unique_ptr<ThinLtoModuleIndex> GlobalIndex;
AddModuleFunction AddModule;
std::unique_ptr<RTDyldObjectLinkingLayer> ObjLinkingLayer;
std::unique_ptr<IRCompileLayer> CompileLayer;
std::unique_ptr<ThinLtoInstrumentationLayer> InstrumentationLayer;
std::unique_ptr<CompileOnDemandLayer> OnDemandLayer;
std::atomic<bool> JitRunning;
std::thread DiscoveryThread;
std::unique_ptr<ThinLtoDiscoveryThread> DiscoveryThreadWorker;
std::unique_ptr<MangleAndInterner> Mangle;
std::unique_ptr<LazyCallThroughManager> CallThroughManager;
void setupLayers(JITTargetMachineBuilder JTMB, unsigned NumCompileThreads,
unsigned DiscoveryFlagsPerBucket,
ExplicitMemoryBarrier MemFence);
Error setupJITDylib(JITDylib *JD, bool AllowNudge, bool PrintStats);
void setupDiscovery(JITDylib *MainJD, unsigned LookaheadLevels,
bool PrintStats);
Expected<ThreadSafeModule> setupMainModule(StringRef MainFunction);
Expected<JITTargetMachineBuilder> setupTargetUtils(Module *M);
Error applyDataLayout(Module *M);
static void exitOnLazyCallThroughFailure() {
errs() << "Compilation failed. Aborting.\n";
exit(1);
}
};
} // namespace orc
} // namespace llvm
#endif
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