Fast string construct stub (ia32 only for now).

src/v8-counters.h

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 67 matching lines @@
   SC(script_wrappers, V8.ScriptWrappers)                              \
   SC(call_initialize_stubs, V8.CallInitializeStubs)                   \
   SC(call_premonomorphic_stubs, V8.CallPreMonomorphicStubs)           \
   SC(call_normal_stubs, V8.CallNormalStubs)                           \
   SC(call_megamorphic_stubs, V8.CallMegamorphicStubs)                 \
   SC(arguments_adaptors, V8.ArgumentsAdaptors)                        \
   SC(compilation_cache_hits, V8.CompilationCacheHits)                 \
   SC(compilation_cache_misses, V8.CompilationCacheMisses)             \
   SC(regexp_cache_hits, V8.RegExpCacheHits)                           \
   SC(regexp_cache_misses, V8.RegExpCacheMisses)                       \
+  SC(string_ctor_calls, V8.StringConstructorCalls)                    \
+  SC(string_ctor_conversions, V8.StringConstructorConversions)        \
+  SC(string_ctor_cached_number, V8.StringConstructorCachedNumber)     \
+  SC(string_ctor_string_value, V8.StringConstructorStringValue)       \
+  SC(string_ctor_gc_required, V8.StringConstructorGCRequired)         \
   /* Amount of evaled source code. */                                 \
   SC(total_eval_size, V8.TotalEvalSize)                               \
   /* Amount of loaded source code. */                                 \
   SC(total_load_size, V8.TotalLoadSize)                               \
   /* Amount of parsed source code. */                                 \
   SC(total_parse_size, V8.TotalParseSize)                             \
   /* Amount of source code skipped over using preparsing. */          \
   SC(total_preparse_skipped, V8.TotalPreparseSkipped)                 \
   /* Amount of compiled source code. */                               \
   SC(total_compile_size, V8.TotalCompileSize)                         \
@@ skipping 149 matching lines @@
     stats_counter_count
   };
 
   // Sliding state window counters.
   static StatsCounter state_counters[];
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_COUNTERS_H_