[stubs] Port LoadFunctionPrototypeStub to CSA

src/s390/code-stubs-s390.cc

 // 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.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1201 matching lines @@
   // 31bit ABI requires you to store f4 and f6:
   // http://refspecs.linuxbase.org/ELF/zSeries/lzsabi0_s390.html#AEN417
   __ ld(d4, MemOperand(sp));
   __ ld(d6, MemOperand(sp, kDoubleSize));
   __ la(sp, MemOperand(sp, 2 * kDoubleSize));
 #endif
 
   __ b(r14);
 }
 
-void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
-  Label miss;
-  Register receiver = LoadDescriptor::ReceiverRegister();
-  // Ensure that the vector and slot registers won't be clobbered before
-  // calling the miss handler.
-  DCHECK(!AreAliased(r6, r7, LoadWithVectorDescriptor::VectorRegister(),
-                     LoadWithVectorDescriptor::SlotRegister()));
-
-  NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(masm, receiver, r6,
-                                                          r7, &miss);
-  __ bind(&miss);
-  PropertyAccessCompiler::TailCallBuiltin(
-      masm, PropertyAccessCompiler::MissBuiltin(Code::LOAD_IC));
-}
-
 void RegExpExecStub::Generate(MacroAssembler* masm) {
 // Just jump directly to runtime if native RegExp is not selected at compile
 // time or if regexp entry in generated code is turned off runtime switch or
 // at compilation.
 #ifdef V8_INTERPRETED_REGEXP
   __ TailCallRuntime(Runtime::kRegExpExec);
 #else   // V8_INTERPRETED_REGEXP
 
   // Stack frame on entry.
   //  sp[0]: last_match_info (expected JSArray)
@@ skipping 2246 matching lines @@
   CallApiFunctionAndReturn(masm, api_function_address, thunk_ref,
                            kStackUnwindSpace, NULL, return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390