llvm-tutorial/source/Main.cpp

// Standard includes
#include <cstdio>

//LLVM includes
#include "llvm/Support/TargetSelect.h"
#include "KaleidoscopeJIT.h"

// Local includes
#include "Ast.h"
#include "Parser.h"
#include "JIT.h"

using namespace parser;
using namespace jit;

namespace helper {
// Cloning make_unique here until it's standard in C++14.
// Using a namespace to avoid conflicting with MSVC's std::make_unique (which
// ADL can sometimes find in unqualified calls).
template <class T, class... Args>
static
    typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type
    make_unique(Args &&... args) {
  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}
}

//===----------------------------------------------------------------------===//
// "Library" functions that can be "extern'd" from user code.
//===----------------------------------------------------------------------===//

/// putchard - putchar that takes a double and returns 0.
extern "C" double putchard(double X) {
  fputc((char)X, stderr);
  return 0;
}

/// printd - printf that takes a double prints it as "%f\n", returning 0.
extern "C" double printd(double X) {
  fprintf(stderr, "%f\n", X);
  return 0;
}

//===----------------------------------------------------------------------===//
// Main driver code.
//===----------------------------------------------------------------------===//

int main() {
  InitializeNativeTarget();
  InitializeNativeTargetAsmPrinter();
  InitializeNativeTargetAsmParser();

  JITObjects::TheJIT = llvm::make_unique<llvm::orc::KaleidoscopeJIT>();
  jit::InitializeModuleAndPassManager();

  // Prime the first token.
  fprintf(stderr, "ready> ");
  getNextToken();
  // Run the main "interpreter loop" now.
  MainLoop();

  AstObjects::TheModule->dump();

  return 0;
}