[stubs] Port LoadFunctionPrototypeStub to CSA

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 20 matching lines @@
   /* --- PlatformCodeStubs --- */             \
   V(ArrayConstructor)                         \
   V(BinaryOpICWithAllocationSite)             \
   V(CallApiCallback)                          \
   V(CallApiGetter)                            \
   V(CallConstruct)                            \
   V(CallIC)                                   \
   V(CEntry)                                   \
   V(CompareIC)                                \
   V(DoubleToI)                                \
-  V(FunctionPrototype)                        \
   V(InternalArrayConstructor)                 \
   V(JSEntry)                                  \
   V(MathPow)                                  \
   V(ProfileEntryHook)                         \
   V(RecordWrite)                              \
   V(RegExpExec)                               \
   V(StoreBufferOverflow)                      \
   V(StoreSlowElement)                         \
   V(SubString)                                \
   V(NameDictionaryLookup)                     \
@@ skipping 813 matching lines @@
     return TailCallModeBits::decode(minor_key_);
   }
 
  private:
   void PrintState(std::ostream& os) const final;  // NOLINT
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(CallIC);
   DEFINE_TURBOFAN_CODE_STUB(CallIC, TurboFanCodeStub);
 };
 
-
-// TODO(verwaest): Translate to hydrogen code stub.
-class FunctionPrototypeStub : public PlatformCodeStub {
- public:
-  explicit FunctionPrototypeStub(Isolate* isolate)
-      : PlatformCodeStub(isolate) {}
-
-  Code::Kind GetCodeKind() const override { return Code::HANDLER; }
-  ExtraICState GetExtraICState() const override { return Code::LOAD_IC; }
-
-  // TODO(mvstanton): only the receiver register is accessed. When this is
-  // translated to a hydrogen code stub, a new CallInterfaceDescriptor
-  // should be created that just uses that register for more efficient code.
-  CallInterfaceDescriptor GetCallInterfaceDescriptor() const override {
-    return LoadWithVectorDescriptor(isolate());
-  }
-
-  DEFINE_PLATFORM_CODE_STUB(FunctionPrototype, PlatformCodeStub);
-};
-
 class KeyedLoadSloppyArgumentsStub : public TurboFanCodeStub {
  public:
   explicit KeyedLoadSloppyArgumentsStub(Isolate* isolate)
       : TurboFanCodeStub(isolate) {}
 
   Code::Kind GetCodeKind() const override { return Code::HANDLER; }
   ExtraICState GetExtraICState() const override { return Code::LOAD_IC; }
 
  protected:
   DEFINE_CALL_INTERFACE_DESCRIPTOR(LoadWithVector);
@@ skipping 990 matching lines @@
 #undef DEFINE_PLATFORM_CODE_STUB
 #undef DEFINE_HANDLER_CODE_STUB
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODE_STUBS_H_