main.cpp
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	#include <iostream>

	#include "llvm/Module.h"
	#include "llvm/Function.h"
	#include "llvm/PassManager.h"
	#include "llvm/CallingConv.h"
	#include "llvm/Analysis/Verifier.h"
	#include "llvm/Assembly/PrintModulePass.h"
	#include "llvm/Support/IRBuilder.h"
	#include "llvm/Support/raw_ostream.h"

	using namespace llvm;

	int main()
	{
	LLVMContext& ctx = makeLLVMModule();

	Module* m = new Module("test");

	Constant* c = m->getOrInsertFunction("mul_add",
	/ret type/ IntegerType::get(ctx,32),
	/args/ IntegerType::get(ctx,32),
	IntegerType::get(ctx, 32),
	IntegerType::get(ctx,32),
	/varargs terminated with null/ NULL);

	Function* mul_add = cast<Function>(c);
	mul_add->setCallingConv(CallingConv::C);


	Function::arg_iterator args = mul_add->arg_begin();
	Value* x = args++;
	x->setName("x");
	Value* y = args++;
	y->setName("y");
	Value* z = args++;
	z->setName("z");

	BasicBlock* block = BasicBlock::Create(getGlobalContext(), "entry", mul_add);
	IRBuilder<> builder(block);

	Value* tmp = builder.CreateBinOp(Instruction::Mul,
	x, y, "tmp");
	Value* tmp2 = builder.CreateBinOp(Instruction::Add,
	tmp, z, "tmp2");

	builder.CreateRet(tmp2);

	verifyModule(*m, PrintMessageAction);

	PassManager man;
	man.add(createPrintModulePass(&outs()));
	man.run(*m);

	delete m;

	return 0;
	}