Attempt to make \b\w+ faster. Slight performance increase on, e.g., string unpacking.

src/regexp-macro-assembler-tracer.cc

 // Copyright 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 289 matching lines @@
   for (int i = 0; i < str.length(); i++) {
     PrintF("u%04x", str[i]);
   }
   PrintF("\", cp_offset=%d, label[%08x])\n", cp_offset, on_failure);
   assembler_->CheckCharacters(str, cp_offset, on_failure, check_end_of_string);
 }
 
 
 bool RegExpMacroAssemblerTracer::CheckSpecialCharacterClass(
     uc16 type,
-    int cp_offset,
-    bool check_offset,
     Label* on_no_match) {
   bool supported = assembler_->CheckSpecialCharacterClass(type,
-                                                          cp_offset,
-                                                          check_offset,
                                                           on_no_match);
-  PrintF(" CheckSpecialCharacterClass(type='%c', offset=%d, "
-             "check_offset=%s, label[%08x]): %s;\n",
+  PrintF(" CheckSpecialCharacterClass(type='%c', label[%08x]): %s;\n",
          type,
-         cp_offset,
-         check_offset ? "true" : "false",
          on_no_match,
          supported ? "true" : "false");
   return supported;
 }
 
 
 void RegExpMacroAssemblerTracer::IfRegisterLT(int register_index,
                                               int comparand, Label* if_lt) {
   PrintF(" IfRegisterLT(register=%d, number=%d, label[%08x]);\n",
          register_index, comparand, if_lt);
@@ skipping 22 matching lines @@
   return assembler_->Implementation();
 }
 
 
 Handle<Object> RegExpMacroAssemblerTracer::GetCode(Handle<String> source) {
   PrintF(" GetCode(%s);\n", *(source->ToCString()));
   return assembler_->GetCode(source);
 }
 
 }}  // namespace v8::internal