[stubs] Port LoadFunctionPrototypeStub to CSA

src/arm64/macro-assembler-arm64.h

 // Copyright 2013 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_ARM64_MACRO_ASSEMBLER_ARM64_H_
 #define V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
 
 #include <vector>
 
 #include "src/arm64/assembler-arm64.h"
@@ skipping 1354 matching lines @@
                        Label* gc_required);
 
   // ---------------------------------------------------------------------------
   // Support functions.
 
   // Machine code version of Map::GetConstructor().
   // |temp| holds |result|'s map when done, and |temp2| its instance type.
   void GetMapConstructor(Register result, Register map, Register temp,
                          Register temp2);
 
-  void TryGetFunctionPrototype(Register function, Register result,
-                               Register scratch, Label* miss);
-
   // Compare object type for heap object.  heap_object contains a non-Smi
   // whose object type should be compared with the given type.  This both
   // sets the flags and leaves the object type in the type_reg register.
   // It leaves the map in the map register (unless the type_reg and map register
   // are the same register).  It leaves the heap object in the heap_object
   // register unless the heap_object register is the same register as one of the
   // other registers.
   void CompareObjectType(Register heap_object,
                          Register map,
                          Register type_reg,
@@ skipping 794 matching lines @@
   class RegisterBits : public BitField<unsigned, 0, 5> {};
   class DeltaBits : public BitField<uint32_t, 5, 32-5> {};
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #define ACCESS_MASM(masm) masm->
 
 #endif  // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_