Inline native String.charCodeAt in optimized code.

runtime/vm/object.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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 3860 matching lines @@
   virtual intptr_t CharSize() const {
     return kTwoByteChar;
   }
 
   RawTwoByteString* EscapeSpecialCharacters(bool raw_str) const;
 
   // We use the same maximum elements for all strings.
   static const intptr_t kBytesPerElement = 2;
   static const intptr_t kMaxElements = String::kMaxElements;
 
+  static intptr_t data_offset() { return OFFSET_OF(RawTwoByteString, data_); }
+
   static intptr_t InstanceSize() {
     ASSERT(sizeof(RawTwoByteString) == OFFSET_OF(RawTwoByteString, data_));
     return 0;
   }
 
   static intptr_t InstanceSize(intptr_t len) {
     ASSERT(sizeof(RawTwoByteString) == kSizeofRawString);
     ASSERT(0 <= len && len <= kMaxElements);
     return RoundedAllocationSize(
         sizeof(RawTwoByteString) + (len * kBytesPerElement));
@@ skipping 1840 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_