Sync c++ kaleidoscope tutorial with test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82572 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/tutorial/LangImpl6.html b/docs/tutorial/LangImpl6.html
index c2ac84c..f113e96 100644
--- a/docs/tutorial/LangImpl6.html
+++ b/docs/tutorial/LangImpl6.html
@@ -306,7 +306,7 @@
 functions (because the "prototype" boils down to a function with the right
 name) everything falls into place.</p>
 
-<p>The final piece of code we are missing, is a bit of top level magic:</p>
+<p>The final piece of code we are missing, is a bit of top-level magic:</p>
 
 <div class="doc_code">
 <pre>
@@ -795,7 +795,6 @@
 
 </div>
 
-
 <!-- *********************************************************************** -->
 <div class="doc_section"><a name="code">Full Code Listing</a></div>
 <!-- *********************************************************************** -->
@@ -998,7 +997,8 @@
 };
 
 /// PrototypeAST - This class represents the "prototype" for a function,
-/// which captures its argument names as well as if it is an operator.
+/// which captures its name, and its argument names (thus implicitly the number
+/// of arguments the function takes), as well as if it is an operator.
 class PrototypeAST {
   std::string Name;
   std::vector&lt;std::string&gt; Args;
@@ -1038,7 +1038,7 @@
 //===----------------------------------------------------------------------===//
 
 /// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
-/// token the parser it looking at.  getNextToken reads another token from the
+/// token the parser is looking at.  getNextToken reads another token from the
 /// lexer and updates CurTok with its results.
 static int CurTok;
 static int getNextToken() {
@@ -1086,9 +1086,9 @@
       ExprAST *Arg = ParseExpression();
       if (!Arg) return 0;
       Args.push_back(Arg);
-      
+
       if (CurTok == ')') break;
-      
+
       if (CurTok != ',')
         return Error("Expected ')' or ',' in argument list");
       getNextToken();
@@ -1188,7 +1188,6 @@
   return new ForExprAST(IdName, Start, End, Step, Body);
 }
 
-
 /// primary
 ///   ::= identifierexpr
 ///   ::= numberexpr
@@ -1272,7 +1271,7 @@
 static PrototypeAST *ParsePrototype() {
   std::string FnName;
   
-  unsigned Kind = 0;  // 0 = identifier, 1 = unary, 2 = binary.
+  unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
   unsigned BinaryPrecedence = 30;
   
   switch (CurTok) {
@@ -1389,7 +1388,6 @@
   return Builder.CreateCall(F, OperandV, "unop");
 }
 
-
 Value *BinaryExprAST::Codegen() {
   Value *L = LHS-&gt;Codegen();
   Value *R = RHS-&gt;Codegen();
@@ -1402,7 +1400,8 @@
   case '&lt;':
     L = Builder.CreateFCmpULT(L, R, "cmptmp");
     // Convert bool 0/1 to double 0.0 or 1.0
-    return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()), "booltmp");
+    return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+                                "booltmp");
   default: break;
   }
   
@@ -1687,7 +1686,7 @@
 }
 
 static void HandleTopLevelExpression() {
-  // Evaluate a top level expression into an anonymous function.
+  // Evaluate a top-level expression into an anonymous function.
   if (FunctionAST *F = ParseTopLevelExpr()) {
     if (Function *LF = F-&gt;Codegen()) {
       // JIT the function, returning a function pointer.
@@ -1710,7 +1709,7 @@
     fprintf(stderr, "ready&gt; ");
     switch (CurTok) {
     case tok_eof:    return;
-    case ';':        getNextToken(); break;  // ignore top level semicolons.
+    case ';':        getNextToken(); break;  // ignore top-level semicolons.
     case tok_def:    HandleDefinition(); break;
     case tok_extern: HandleExtern(); break;
     default:         HandleTopLevelExpression(); break;
@@ -1718,8 +1717,6 @@
   }
 }
 
-
-
 //===----------------------------------------------------------------------===//
 // "Library" functions that can be "extern'd" from user code.
 //===----------------------------------------------------------------------===//
@@ -1743,6 +1740,9 @@
 //===----------------------------------------------------------------------===//
 
 int main() {
+  InitializeNativeTarget();
+  LLVMContext &amp;Context = getGlobalContext();
+
   // Install standard binary operators.
   // 1 is lowest precedence.
   BinopPrecedence['&lt;'] = 10;
@@ -1755,7 +1755,7 @@
   getNextToken();
 
   // Make the module, which holds all the code.
-  TheModule = new Module("my cool jit", getGlobalContext());
+  TheModule = new Module("my cool jit", Context);
 
   ExistingModuleProvider *OurModuleProvider =
       new ExistingModuleProvider(TheModule);