Add Dart code to diff_view

pkg/compiler/lib/src/ssa/nodes.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of ssa;
 
 abstract class HVisitor<R> {
   R visitAdd(HAdd node);
   R visitAwait(HAwait node);
   R visitBitAnd(HBitAnd node);
@@ skipping 121 matching lines @@
 class HGraph {
   Element element;  // Used for debug printing.
   HBasicBlock entry;
   HBasicBlock exit;
   HThis thisInstruction;
   /// Receiver parameter, set for methods using interceptor calling convention.
   HParameterValue explicitReceiverParameter;
   bool isRecursiveMethod = false;
   bool calledInLoop = false;
   final List<HBasicBlock> blocks = <HBasicBlock>[];
+  SourceInformation sourceInformation;
 
   // We canonicalize all constants used within a graph so we do not
   // have to worry about them for global value numbering.
   Map<ConstantValue, HConstant> constants = new Map<ConstantValue, HConstant>();
 
   HGraph() {
     entry = addNewBlock();
     // The exit block will be added later, so it has an id that is
     // after all others in the system.
     exit = new HBasicBlock();
@@ skipping 3189 matching lines @@
 class HDynamicType extends HRuntimeType {
   HDynamicType(DynamicType dartType, TypeMask instructionType)
       : super(const <HInstruction>[], dartType, instructionType);
 
   accept(HVisitor visitor) => visitor.visitDynamicType(this);
 
   int typeCode() => HInstruction.DYNAMIC_TYPE_TYPECODE;
 
   bool typeEquals(HInstruction other) => other is HDynamicType;
 }