Extend assembler with ability to produce comments for the generated code.

runtime/vm/flow_graph_compiler_ia32.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_COMPILER_IA32_H_
 #define VM_FLOW_GRAPH_COMPILER_IA32_H_
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #error Include flow_graph_compiler.h instead of flow_graph_compiler_ia32.h.
 #endif
@@ skipping 22 matching lines @@
 
   virtual ~FlowGraphCompiler() { }
 
   void CompileGraph();
 
   // Infrastructure copied from class CodeGenerator or stubbed out.
   void FinalizePcDescriptors(const Code& code);
   void FinalizeStackmaps(const Code& code);
   void FinalizeVarDescriptors(const Code& code);
   void FinalizeExceptionHandlers(const Code& code);
+  void FinalizeComments(const Code& code);
 
  private:
   // Bail out of the flow graph compiler.  Does not return to the caller.
   void Bailout(const char* reason);
 
   const ParsedFunction& parsed_function_;
   const bool is_optimizing_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_IA32_H_