Support array literals with FAST_DOUBLE_ELEMENTS ElementsKind.

src/code-stubs.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 345 matching lines @@
 };
 
 
 class FastCloneShallowArrayStub : public CodeStub {
  public:
   // Maximum length of copied elements array.
   static const int kMaximumClonedLength = 8;
 
   enum Mode {
     CLONE_ELEMENTS,
+    CLONE_DOUBLE_ELEMENTS,
     COPY_ON_WRITE_ELEMENTS
   };
 
   FastCloneShallowArrayStub(Mode mode, int length)
       : mode_(mode),
         length_((mode == COPY_ON_WRITE_ELEMENTS) ? 0 : length) {
     ASSERT(length_ >= 0);
     ASSERT(length_ <= kMaximumClonedLength);
   }
 
   void Generate(MacroAssembler* masm);
 
  private:
   Mode mode_;
   int length_;
 
   Major MajorKey() { return FastCloneShallowArray; }
   int MinorKey() {
-    ASSERT(mode_ == 0 || mode_ == 1);
-    return (length_ << 1) | mode_;
+    ASSERT(mode_ == 0 || mode_ == 1 || mode_ == 2);
+    return length_ * 3 +  mode_;
   }
 };
 
 
 class InstanceofStub: public CodeStub {
  public:
   enum Flags {
     kNoFlags = 0,
     kArgsInRegisters = 1 << 0,
     kCallSiteInlineCheck = 1 << 1,
@@ skipping 667 matching lines @@
   ElementsKind to_;
   bool is_jsarray_;
   StrictModeFlag strict_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(FastElementsConversionStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_