gistfile1.txt

#include <string>
#include <memory>
#include <iostream>

#include <llvm/IR/LLVMContext.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Bitcode/ReaderWriter.h>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include <llvm/Support/MemoryBuffer.h>
#include "llvm/Support/SourceMgr.h"


using namespace std;
using namespace llvm;

int main()
{
    InitializeNativeTarget();
    LLVMContext Context;

    MemoryBufferRef Buffer = MemoryBuffer::getFile("tst.bc").get()->getMemBufferRef();
    ErrorOr<std::unique_ptr<Module>> ModuleOrErr = parseBitcodeFile(Buffer, Context);
    if (std::error_code EC = ModuleOrErr.getError()) {
      SMDiagnostic Err = SMDiagnostic(Buffer.getBufferIdentifier(), SourceMgr::DK_Error,
                         EC.message());
      std::cout << "WRONG" << std::endl;
      return 1;
    }
    llvm::EngineBuilder factory(std::move(ModuleOrErr.get()));

    llvm::TargetOptions Opts;
    factory.setEngineKind(llvm::EngineKind::JIT);
    factory.setTargetOptions(Opts);
    //std::unique_ptr<llvm::RTDyldMemoryManager> MemMgr(new SectionMemoryManager());
    //factory.setMCJITMemoryManager(std::move(MemMgr));
    llvm::ExecutionEngine *executionEngine = factory.create();

    Function* func = executionEngine->FindFunctionNamed("main");

    typedef void (*PFN)();
    PFN pfn = reinterpret_cast<PFN>(executionEngine->getPointerToFunction(func));
    int a = 5;
    int b = 10;
    pfn();
    std::cout << a << std::endl;
    delete executionEngine;


    return 0;
}