ES6 symbols: Allow symbols as property names

src/x64/code-stubs-x64.h

 // Copyright 2011 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 298 matching lines @@
                                              Register hash,
                                              Register mask);
 
   Major MajorKey() { return NumberToString; }
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
 };
 
 
-class StringDictionaryLookupStub: public PlatformCodeStub {
+class NameDictionaryLookupStub: public PlatformCodeStub {
  public:
   enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP };
 
-  StringDictionaryLookupStub(Register dictionary,
-                             Register result,
-                             Register index,
-                             LookupMode mode)
+  NameDictionaryLookupStub(Register dictionary,
+                           Register result,
+                           Register index,
+                           LookupMode mode)
       : dictionary_(dictionary), result_(result), index_(index), mode_(mode) { }
 
   void Generate(MacroAssembler* masm);
 
   static void GenerateNegativeLookup(MacroAssembler* masm,
                                      Label* miss,
                                      Label* done,
                                      Register properties,
-                                     Handle<String> name,
+                                     Handle<Name> name,
                                      Register r0);
 
   static void GeneratePositiveLookup(MacroAssembler* masm,
                                      Label* miss,
                                      Label* done,
                                      Register elements,
                                      Register name,
                                      Register r0,
                                      Register r1);
 
   virtual bool SometimesSetsUpAFrame() { return false; }
 
  private:
   static const int kInlinedProbes = 4;
   static const int kTotalProbes = 20;
 
   static const int kCapacityOffset =
-      StringDictionary::kHeaderSize +
-      StringDictionary::kCapacityIndex * kPointerSize;
+      NameDictionary::kHeaderSize +
+      NameDictionary::kCapacityIndex * kPointerSize;
 
   static const int kElementsStartOffset =
-      StringDictionary::kHeaderSize +
-      StringDictionary::kElementsStartIndex * kPointerSize;
+      NameDictionary::kHeaderSize +
+      NameDictionary::kElementsStartIndex * kPointerSize;
 
-  Major MajorKey() { return StringDictionaryLookup; }
+  Major MajorKey() { return NameDictionaryLookup; }
 
   int MinorKey() {
     return DictionaryBits::encode(dictionary_.code()) |
         ResultBits::encode(result_.code()) |
         IndexBits::encode(index_.code()) |
         LookupModeBits::encode(mode_);
   }
 
   class DictionaryBits: public BitField<int, 0, 4> {};
   class ResultBits: public BitField<int, 4, 4> {};
@@ skipping 243 matching lines @@
   RememberedSetAction remembered_set_action_;
   SaveFPRegsMode save_fp_regs_mode_;
   Label slow_;
   RegisterAllocation regs_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODE_STUBS_X64_H_