llvm/llvm/examples/HowToUseLLJIT/HowToUseLLJIT.cpp

//===------- HowToUseLLJIT.cpp - An example use of ORC-based LLJIT --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//  This small program provides an example of how to quickly build a small
//  module with a 'add1' function and use of IRBuilder to create add & return
//  instructions.
//
// Goal:
//  The goal of this snippet is to create in the memory
//  the LLVM module consisting of a function as follow:
//
// int add1(int x) {
//   return x+1;
// }
//  add1(42);
//
// then compile the module via LLJIT, then execute the 'add1'
// function and return result to a driver, i.e. to a "host program".
//
//===----------------------------------------------------------------------===//

#include "llvm/ExecutionEngine/Orc/LLJIT.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"

usingnamespacellvm;
usingnamespacellvm::orc;

ExitOnError ExitOnErr;

ThreadSafeModule createDemoModule() { … }

int main(int argc, char *argv[]) { … }