Introduce cache of resolved names in library

runtime/vm/compiler_stats.h

 // Copyright (c) 2011, 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_COMPILER_STATS_H_
 #define VM_COMPILER_STATS_H_
 
 #include "vm/allocation.h"
 #include "vm/flags.h"
 #include "vm/timer.h"
 
 
 
 namespace dart {
 
 DECLARE_FLAG(bool, compiler_stats);
 
-
 class CompilerStats : AllStatic {
  public:
   static intptr_t num_tokens_total;
   static intptr_t num_literal_tokens_total;
   static intptr_t num_ident_tokens_total;
   static intptr_t num_tokens_consumed;
   static intptr_t num_token_checks;
   static intptr_t num_tokens_rewind;
   static intptr_t num_tokens_lookahead;
 
+  static intptr_t num_lib_cache_hit;
+  static intptr_t num_names_cached;
+  static intptr_t make_accessor_name;
+  static intptr_t make_field_name;
+
   static intptr_t src_length;        // Total number of characters in source.
   static intptr_t code_allocated;    // Bytes allocated for generated code.
   static Timer parser_timer;         // Cumulative runtime of parser.
   static Timer scanner_timer;        // Cumulative runtime of scanner.
   static Timer codegen_timer;        // Cumulative runtime of code generator.
   static Timer graphbuilder_timer;   // Included in codegen_timer.
   static Timer ssa_timer;            // Included in codegen_timer.
   static Timer graphinliner_timer;   // Included in codegen_timer.
   static Timer graphinliner_parse_timer;  // Included in codegen_timer.
   static Timer graphinliner_build_timer;  // Included in codegen_timer.
   static Timer graphinliner_ssa_timer;    // Included in codegen_timer.
   static Timer graphinliner_opt_timer;    // Included in codegen_timer.
   static Timer graphinliner_find_timer;   // Included in codegen_timer.
   static Timer graphinliner_plug_timer;   // Included in codegen_timer.
   static Timer graphinliner_subst_timer;  // Included in codegen_timer.
 
   static Timer graphoptimizer_timer;  // Included in codegen_timer.
   static Timer graphcompiler_timer;   // Included in codegen_timer.
   static Timer codefinalizer_timer;   // Included in codegen_timer.
 
   static void Print();
 };
 
 
 }  // namespace dart
 
 #endif  // VM_COMPILER_STATS_H_