[stubs] Port LoadFunctionPrototypeStub to CSA

src/x64/macro-assembler-x64.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_X64_MACRO_ASSEMBLER_X64_H_
 #define V8_X64_MACRO_ASSEMBLER_X64_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/base/flags.h"
@@ skipping 1335 matching lines @@
 
   // Check if result is zero and any of op1 and op2 are negative.
   // Register scratch is destroyed, and it must be different from op2.
   void NegativeZeroTest(Register result, Register op1, Register op2,
                         Register scratch, Label* then_label);
 
   // Machine code version of Map::GetConstructor().
   // |temp| holds |result|'s map when done.
   void GetMapConstructor(Register result, Register map, Register temp);
 
-  // Try to get function prototype of a function and puts the value in
-  // the result register. Checks that the function really is a
-  // function and jumps to the miss label if the fast checks fail. The
-  // function register will be untouched; the other register may be
-  // clobbered.
-  void TryGetFunctionPrototype(Register function, Register result, Label* miss);
-
   // Find the function context up the context chain.
   void LoadContext(Register dst, int context_chain_length);
 
   // Load the global object from the current context.
   void LoadGlobalObject(Register dst) {
     LoadNativeContextSlot(Context::EXTENSION_INDEX, dst);
   }
 
   // Load the global proxy from the current context.
   void LoadGlobalProxy(Register dst) {
@@ skipping 315 matching lines @@
 inline Operand StackOperandForReturnAddress(int32_t disp) {
   return Operand(rsp, disp);
 }
 
 #define ACCESS_MASM(masm) masm->
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_