[stubs] Port LoadFieldStub to TF

src/interface-descriptors.h

 // Copyright 2014 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_CALL_INTERFACE_DESCRIPTOR_H_
 #define V8_CALL_INTERFACE_DESCRIPTOR_H_
 
 #include <memory>
 
 #include "src/assembler.h"
 #include "src/globals.h"
 #include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 class PlatformInterfaceDescriptor;
 
 #define INTERFACE_DESCRIPTOR_LIST(V)      \
   V(Void)                                 \
   V(ContextOnly)                          \
   V(Load)                                 \
   V(LoadWithVector)                       \
+  V(LoadField)                            \
   V(LoadICProtoArray)                     \
   V(LoadGlobal)                           \
   V(LoadGlobalWithVector)                 \
   V(Store)                                \
   V(StoreWithVector)                      \
   V(StoreNamedTransition)                 \
   V(StoreTransition)                      \
   V(VarArgFunction)                       \
   V(FastNewClosure)                       \
   V(FastNewFunctionContext)               \
@@ skipping 267 matching lines @@
  public:
   DEFINE_PARAMETERS(kReceiver, kName, kSlot)
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(LoadDescriptor,
                                                CallInterfaceDescriptor)
 
   static const Register ReceiverRegister();
   static const Register NameRegister();
   static const Register SlotRegister();
 };
 
+// LoadFieldDescriptor is used by the shared handler that loads a field from an
+// object based on the smi-encoded field description.
+class LoadFieldDescriptor : public CallInterfaceDescriptor {
+ public:
+  DEFINE_PARAMETERS(kReceiver, kSmiHandler)
+  DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(LoadFieldDescriptor,
+                                               CallInterfaceDescriptor)
+
+  static const Register ReceiverRegister();
+  static const Register SmiHandlerRegister();
+};
+
 class LoadGlobalDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kName, kSlot)
   DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(LoadGlobalDescriptor,
                                                CallInterfaceDescriptor)
 
   static const Register NameRegister() {
     return LoadDescriptor::NameRegister();
   }
 
@@ skipping 554 matching lines @@
 }  // namespace v8
 
 
 #if V8_TARGET_ARCH_ARM64
 #include "src/arm64/interface-descriptors-arm64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "src/arm/interface-descriptors-arm.h"
 #endif
 
 #endif  // V8_CALL_INTERFACE_DESCRIPTOR_H_