First step toward an optimizing compiler:

runtime/vm/flow_graph_builder.h

 // 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.
 
 #ifndef VM_FLOW_GRAPH_BUILDER_H_
 #define VM_FLOW_GRAPH_BUILDER_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 107 matching lines @@
   Computation* BuildStoreLocal(const LocalVariable& local, Value* value);
   Computation* BuildLoadLocal(const LocalVariable& local);
 
   // Helpers for translating parts of the AST.
   void TranslateArgumentList(const ArgumentListNode& node,
                              ZoneGrowableArray<Value*>* values);
 
   // Creates an instantiated type argument vector used in preparation of an
   // allocation call.
   // May be called only if allocating an object of a parameterized class.
-  Definition* BuildInstantiatedTypeArguments(
+  BindInstr* BuildInstantiatedTypeArguments(
       intptr_t token_index,
       const AbstractTypeArguments& type_arguments);
 
   // Creates a possibly uninstantiated type argument vector and the type
   // argument vector of the instantiator (two values in 'args') used in
   // preparation of a constructor call.
   // May be called only if allocating an object of a parameterized class.
   void BuildConstructorTypeArguments(ConstructorCallNode* node,
                                      ZoneGrowableArray<Value*>* args);
 
@@ skipping 26 matching lines @@
   void CloseFragment() { exit_ = NULL; }
   intptr_t AllocateTempIndex() { return temp_index_++; }
   void DeallocateTempIndex(intptr_t n) {
     ASSERT(temp_index_ >= n);
     temp_index_ -= n;
   }
 
   virtual void CompiletimeStringInterpolation(const Function& interpol_func,
                                               const Array& literals);
 
-  Definition* BuildObjectAllocation(ConstructorCallNode* node);
+  BindInstr* BuildObjectAllocation(ConstructorCallNode* node);
   void BuildConstructorCall(ConstructorCallNode* node, Value* alloc_value);
 
   void BuildStoreContext(const LocalVariable& variable);
   void BuildLoadContext(const LocalVariable& variable);
 
   void BuildThrowNode(ThrowNode* node);
 
   ClosureCallComp* BuildClosureCall(ClosureCallNode* node);
 
  private:
@@ skipping 111 matching lines @@
   // Output parameters.
   TargetEntryInstr** true_successor_address_;
   TargetEntryInstr** false_successor_address_;
 
   intptr_t condition_token_index_;
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_BUILDER_H_