[stubs] Remove the is_jsarray bit from the TransitionElementsKindStub.

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/code-stub-assembler.h"
@@ skipping 2716 matching lines @@
  private:
   class ElementsKindBits : public BitField<ElementsKind, 3, 8> {};
   class IsJSArrayBits : public BitField<bool, 11, 1> {};
 
   DEFINE_HYDROGEN_CODE_STUB(StoreFastElement, HydrogenCodeStub);
 };
 
 
 class TransitionElementsKindStub : public HydrogenCodeStub {
  public:
-  TransitionElementsKindStub(Isolate* isolate,
-                             ElementsKind from_kind,
-                             ElementsKind to_kind,
-                             bool is_js_array) : HydrogenCodeStub(isolate) {
+  TransitionElementsKindStub(Isolate* isolate, ElementsKind from_kind,
+                             ElementsKind to_kind)
+      : HydrogenCodeStub(isolate) {
     set_sub_minor_key(FromKindBits::encode(from_kind) |
-                      ToKindBits::encode(to_kind) |
-                      IsJSArrayBits::encode(is_js_array));
+                      ToKindBits::encode(to_kind));
   }
 
   ElementsKind from_kind() const {
     return FromKindBits::decode(sub_minor_key());
   }
 
   ElementsKind to_kind() const { return ToKindBits::decode(sub_minor_key()); }
 
-  bool is_js_array() const { return IsJSArrayBits::decode(sub_minor_key()); }
-
  private:
   class FromKindBits: public BitField<ElementsKind, 8, 8> {};
   class ToKindBits: public BitField<ElementsKind, 0, 8> {};
-  class IsJSArrayBits: public BitField<bool, 16, 1> {};
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(TransitionElementsKind);
   DEFINE_HYDROGEN_CODE_STUB(TransitionElementsKind, HydrogenCodeStub);
 };
 
 class AllocateHeapNumberStub : public TurboFanCodeStub {
  public:
   explicit AllocateHeapNumberStub(Isolate* isolate)
       : TurboFanCodeStub(isolate) {}
 
@@ skipping 373 matching lines @@
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 extern Representation RepresentationFromType(Type* type);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_