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

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

llvm-svn: 270645

llvm/examples/HowToUseJIT/HowToUseJIT.cpp

@@ -35,22 +35,30 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
 #include "llvm/ExecutionEngine/GenericValue.h"
-#include "llvm/ExecutionEngine/Interpreter.h"
+#include "llvm/IR/Argument.h"
+#include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
+#include "llvm/Support/Casting.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cassert>
+#include <memory>
+#include <vector>
 
 using namespace llvm;
 
 int main() {
-  
   InitializeNativeTarget();
 
   LLVMContext Context;