Fix some Include What You Use warnings in examples; other minor fixes.

Differential revision: http://reviews.llvm.org/D20607

llvm-svn: 270645

llvm/examples/ModuleMaker/ModuleMaker.cpp

@@ -14,12 +14,18 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/InstrTypes.h"
+#include "llvm/IR/Instruction.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
 #include "llvm/Support/raw_ostream.h"
+
 using namespace llvm;
 
 int main() {