Import LLVM, at r72732.

1 files changed, 61 insertions, 0 deletions

diff --git a/examples/ModuleMaker/ModuleMaker.cpp b/examples/ModuleMaker/ModuleMaker.cpp
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+++ b/examples/ModuleMaker/ModuleMaker.cpp
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+//===- 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 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/Bitcode/ReaderWriter.h"
+#include <iostream>
+using namespace llvm;
+
+int main() {
+  // Create the "module" or "program" or "translation unit" to hold the
+  // function
+  Module *M = new Module("test");
+
+  // Create the main function: first create the type 'int ()'
+  FunctionType *FT = FunctionType::get(Type::Int32Ty, std::vector<const Type*>(),
+                                       /*not vararg*/false);
+
+  // By passing a module as the last parameter to the Function constructor,
+  // it automatically gets appended to the Module.
+  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 = BasicBlock::Create("EntryBlock", F);
+
+  // Get pointers to the constant integers...
+  Value *Two = ConstantInt::get(Type::Int32Ty, 2);
+  Value *Three = ConstantInt::get(Type::Int32Ty, 3);
+
+  // Create the add instruction... does not insert...
+  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(ReturnInst::Create(Add));
+
+  // Output the bitcode file to stdout
+  WriteBitcodeToFile(M, std::cout);
+
+  // Delete the module and all of its contents.
+  delete M;
+  return 0;
+}