Revert of Migrate FastCloneShallowObjectStub to TurboFan

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/codegen.h"
@@ skipping 51 matching lines @@
   V(ArrayNoArgumentConstructor)             \
   V(ArraySingleArgumentConstructor)         \
   V(BinaryOpIC)                             \
   V(BinaryOpWithAllocationSite)             \
   V(CreateAllocationSite)                   \
   V(CreateWeakCell)                         \
   V(ElementsTransitionAndStore)             \
   V(FastArrayPush)                          \
   V(FastCloneRegExp)                        \
   V(FastCloneShallowArray)                  \
+  V(FastCloneShallowObject)                 \
   V(FastNewClosure)                         \
   V(FastNewContext)                         \
   V(FastNewObject)                          \
   V(FastNewRestParameter)                   \
   V(FastNewSloppyArguments)                 \
   V(FastNewStrictArguments)                 \
   V(GrowArrayElements)                      \
   V(InternalArrayNArgumentsConstructor)     \
   V(InternalArrayNoArgumentConstructor)     \
   V(InternalArraySingleArgumentConstructor) \
@@ skipping 25 matching lines @@
   V(AllocateBool16x8)                       \
   V(AllocateInt8x16)                        \
   V(AllocateUint8x16)                       \
   V(AllocateBool8x16)                       \
   V(StringLength)                           \
   V(Add)                                    \
   V(Subtract)                               \
   V(BitwiseAnd)                             \
   V(BitwiseOr)                              \
   V(BitwiseXor)                             \
-  V(FastCloneShallowObject)                 \
   V(LessThan)                               \
   V(LessThanOrEqual)                        \
   V(GreaterThan)                            \
   V(GreaterThanOrEqual)                     \
   V(Equal)                                  \
   V(NotEqual)                               \
   V(StrictEqual)                            \
   V(StrictNotEqual)                         \
   V(StringEqual)                            \
   V(StringNotEqual)                         \
@@ skipping 914 matching lines @@
     return AllocationSiteModeBits::decode(sub_minor_key());
   }
 
  private:
   class AllocationSiteModeBits: public BitField<AllocationSiteMode, 0, 1> {};
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowArray);
   DEFINE_HYDROGEN_CODE_STUB(FastCloneShallowArray, HydrogenCodeStub);
 };
 
-class FastCloneShallowObjectStub : public TurboFanCodeStub {
+
+class FastCloneShallowObjectStub : public HydrogenCodeStub {
  public:
   // Maximum number of properties in copied object.
   static const int kMaximumClonedProperties = 6;
 
   FastCloneShallowObjectStub(Isolate* isolate, int length)
-      : TurboFanCodeStub(isolate) {
+      : HydrogenCodeStub(isolate) {
     DCHECK_GE(length, 0);
     DCHECK_LE(length, kMaximumClonedProperties);
-    minor_key_ = LengthBits::encode(LengthBits::encode(length));
+    set_sub_minor_key(LengthBits::encode(length));
   }
 
-  int length() const { return LengthBits::decode(minor_key_); }
+  int length() const { return LengthBits::decode(sub_minor_key()); }
 
  private:
   class LengthBits : public BitField<int, 0, 4> {};
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(FastCloneShallowObject);
-  DEFINE_TURBOFAN_CODE_STUB(FastCloneShallowObject, TurboFanCodeStub);
+  DEFINE_HYDROGEN_CODE_STUB(FastCloneShallowObject, HydrogenCodeStub);
 };
 
 
 class CreateAllocationSiteStub : public HydrogenCodeStub {
  public:
   explicit CreateAllocationSiteStub(Isolate* isolate)
       : HydrogenCodeStub(isolate) { }
 
   static void GenerateAheadOfTime(Isolate* isolate);
 
@@ skipping 2021 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_