X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=examples%2FModuleMaker%2FModuleMaker.cpp;h=c931972f5b60d337974b505675296a50b9b4b1af;hp=a057a8c8a1046468f8d140d1e7439a7435c868ee;hb=49c02eaad55b68f58d4abdbc22eb08b92a024437;hpb=66e7cd0eea6f116f3ed79acb8948c6d8db50833c diff --git a/examples/ModuleMaker/ModuleMaker.cpp b/examples/ModuleMaker/ModuleMaker.cpp index a057a8c8a10..c931972f5b6 100644 --- a/examples/ModuleMaker/ModuleMaker.cpp +++ b/examples/ModuleMaker/ModuleMaker.cpp @@ -1,54 +1,63 @@ //===- examples/ModuleMaker/ModuleMaker.cpp - Example project ---*- C++ -*-===// // +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// // This programs is a simple example that creates an LLVM module "from scratch", -// emitting it as a bytecode file to standard out. This is just to show how +// emitting it as a bitcode file to standard out. This is just to show how // LLVM projects work and to demonstrate some of the LLVM APIs. // //===----------------------------------------------------------------------===// -#include "llvm/Module.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Constants.h" -#include "llvm/Instructions.h" -#include "llvm/Bytecode/Writer.h" -#include - +#include "llvm/Bitcode/ReaderWriter.h" +#include "llvm/IR/Constants.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/Instructions.h" +#include "llvm/IR/LLVMContext.h" +#include "llvm/IR/Module.h" +#include "llvm/Support/raw_ostream.h" using namespace llvm; int main() { + LLVMContext Context; + // Create the "module" or "program" or "translation unit" to hold the // function - Module *M = new Module("test"); - + Module *M = new Module("test", Context); + // Create the main function: first create the type 'int ()' - FunctionType *FT = FunctionType::get(Type::IntTy, std::vector(), - /*not vararg*/false); - + FunctionType *FT = + FunctionType::get(Type::getInt32Ty(Context), /*not vararg*/false); + // By passing a module as the last parameter to the Function constructor, // it automatically gets appended to the Module. - Function *F = new Function(FT, Function::ExternalLinkage, "main", M); - + Function *F = Function::Create(FT, Function::ExternalLinkage, "main", M); + // Add a basic block to the function... again, it automatically inserts // because of the last argument. - BasicBlock *BB = new BasicBlock("EntryBlock", F); - + BasicBlock *BB = BasicBlock::Create(Context, "EntryBlock", F); + // Get pointers to the constant integers... - Value *Two = ConstantSInt::get(Type::IntTy, 2); - Value *Three = ConstantSInt::get(Type::IntTy, 3); - + Value *Two = ConstantInt::get(Type::getInt32Ty(Context), 2); + Value *Three = ConstantInt::get(Type::getInt32Ty(Context), 3); + // Create the add instruction... does not insert... - Instruction *Add = BinaryOperator::create(Instruction::Add, Two, Three, + Instruction *Add = BinaryOperator::Create(Instruction::Add, Two, Three, "addresult"); - + // explicitly insert it into the basic block... BB->getInstList().push_back(Add); - + // Create the return instruction and add it to the basic block - BB->getInstList().push_back(new ReturnInst(Add)); - - // Output the bytecode file to stdout - WriteBytecodeToFile(M, std::cout); - + BB->getInstList().push_back(ReturnInst::Create(Context, Add)); + + // Output the bitcode file to stdout + WriteBitcodeToFile(M, outs()); + // Delete the module and all of its contents. delete M; return 0;