forked from OSchip/llvm-project
102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
//===- KaleidoscopeJIT.h - A simple JIT for Kaleidoscope --------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Contains a simple JIT definition for use in the kaleidoscope tutorials.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
|
|
#define LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
|
|
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/ExecutionEngine/ExecutionEngine.h"
|
|
#include "llvm/ExecutionEngine/JITSymbol.h"
|
|
#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
|
|
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
|
|
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
|
|
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
|
|
#include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
|
|
#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/Mangler.h"
|
|
#include "llvm/Support/DynamicLibrary.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include <algorithm>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
namespace orc {
|
|
|
|
class KaleidoscopeJIT {
|
|
private:
|
|
ExecutionSession ES;
|
|
std::shared_ptr<SymbolResolver> Resolver;
|
|
std::unique_ptr<TargetMachine> TM;
|
|
const DataLayout DL;
|
|
RTDyldObjectLinkingLayer ObjectLayer;
|
|
IRCompileLayer<decltype(ObjectLayer), SimpleCompiler> CompileLayer;
|
|
|
|
public:
|
|
KaleidoscopeJIT()
|
|
: Resolver(createLegacyLookupResolver(
|
|
ES,
|
|
[this](const std::string &Name) -> JITSymbol {
|
|
if (auto Sym = CompileLayer.findSymbol(Name, false))
|
|
return Sym;
|
|
else if (auto Err = Sym.takeError())
|
|
return std::move(Err);
|
|
if (auto SymAddr =
|
|
RTDyldMemoryManager::getSymbolAddressInProcess(Name))
|
|
return JITSymbol(SymAddr, JITSymbolFlags::Exported);
|
|
return nullptr;
|
|
},
|
|
[](Error Err) { cantFail(std::move(Err), "lookupFlags failed"); })),
|
|
TM(EngineBuilder().selectTarget()), DL(TM->createDataLayout()),
|
|
ObjectLayer(ES,
|
|
[this](VModuleKey) {
|
|
return RTDyldObjectLinkingLayer::Resources{
|
|
std::make_shared<SectionMemoryManager>(), Resolver};
|
|
}),
|
|
CompileLayer(ObjectLayer, SimpleCompiler(*TM)) {
|
|
llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr);
|
|
}
|
|
|
|
TargetMachine &getTargetMachine() { return *TM; }
|
|
|
|
VModuleKey addModule(std::unique_ptr<Module> M) {
|
|
// Add the module to the JIT with a new VModuleKey.
|
|
auto K = ES.allocateVModule();
|
|
cantFail(CompileLayer.addModule(K, std::move(M)));
|
|
return K;
|
|
}
|
|
|
|
JITSymbol findSymbol(const std::string Name) {
|
|
std::string MangledName;
|
|
raw_string_ostream MangledNameStream(MangledName);
|
|
Mangler::getNameWithPrefix(MangledNameStream, Name, DL);
|
|
return CompileLayer.findSymbol(MangledNameStream.str(), true);
|
|
}
|
|
|
|
JITTargetAddress getSymbolAddress(const std::string Name) {
|
|
return cantFail(findSymbol(Name).getAddress());
|
|
}
|
|
|
|
void removeModule(VModuleKey K) {
|
|
cantFail(CompileLayer.removeModule(K));
|
|
}
|
|
};
|
|
|
|
} // end namespace orc
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
|