Add enough compiler support to compile empty functions on x64.

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"
 #include "vm/intermediate_language.h"
 
 namespace dart {
 
 class Instruction;
 class ParsedFunction;
 
 // Build a flow graph from a parsed function's AST.
 class FlowGraphBuilder: public ValueObject {
  public:
   explicit FlowGraphBuilder(const ParsedFunction& parsed_function)
       : parsed_function_(parsed_function),
         postorder_block_entries_() { }
 
   void BuildGraph();
 
+  const GrowableArray<BlockEntryInstr*>* blocks() const {
+    return &postorder_block_entries_;
+  }
+
   const ParsedFunction& parsed_function() const { return parsed_function_; }
 
   void Bailout(const char* reason);
 
  private:
   const ParsedFunction& parsed_function_;
   GrowableArray<BlockEntryInstr*> postorder_block_entries_;
 };
 
 
@@ skipping 48 matching lines @@
                const EffectGraphVisitor& body_fragment);
 
  protected:
   // Implement the core part of the translation of expression node types.
   AssertAssignableComp* TranslateAssignable(const AssignableNode& node);
   InstanceCallComp* TranslateBinaryOp(const BinaryOpNode& node);
   InstanceCallComp* TranslateUnaryOp(const UnaryOpNode& node);
   InstanceCallComp* TranslateComparison(const ComparisonNode& node);
   StoreLocalComp* TranslateStoreLocal(const StoreLocalNode& node);
   StaticCallComp* TranslateStaticCall(const StaticCallNode& node);
+  void TranslateArgumentList(const ArgumentListNode& node,
+                             ZoneGrowableArray<Value*>* values);
 
   void CloseFragment() { exit_ = NULL; }
   intptr_t AllocateTempIndex() { return temp_index_++; }
 
  private:
   // Helper to append a Do instruction to the graph.
   void DoComputation(Computation* computation) {
     AddInstruction(new DoInstr(computation));
   }
 
@@ skipping 100 matching lines @@
   TargetEntryInstr** true_successor_address_;
   TargetEntryInstr** false_successor_address_;
 };
 
 #undef DEFINE_VISIT
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_BUILDER_H_