[stubs]: Convert FastNewContext stub to turbofan

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 "src/assembler.h"
 #include "src/macro-assembler.h"
 
@@ skipping 16 matching lines @@
   V(LoadGlobal)                        \
   V(LoadGlobalWithVector)              \
   V(Store)                             \
   V(StoreTransition)                   \
   V(VectorStoreTransition)             \
   V(VectorStoreICTrampoline)           \
   V(VectorStoreIC)                     \
   V(LoadWithVector)                    \
   V(VarArgFunction)                    \
   V(FastNewClosure)                    \
-  V(FastNewContext)                    \
+  V(FastNewFunctionContext)            \
   V(FastNewObject)                     \
   V(FastNewRestParameter)              \
   V(FastNewSloppyArguments)            \
   V(FastNewStrictArguments)            \
   V(TypeConversion)                    \
   V(Typeof)                            \
   V(FastCloneRegExp)                   \
   V(FastCloneShallowArray)             \
   V(FastCloneShallowObject)            \
   V(CreateAllocationSite)              \
@@ skipping 446 matching lines @@
   static const Register VectorRegister() {
     return LoadWithVectorDescriptor::VectorRegister();
   }
 };
 
 class FastNewClosureDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(FastNewClosureDescriptor, CallInterfaceDescriptor)
 };
 
-
-class FastNewContextDescriptor : public CallInterfaceDescriptor {
+class FastNewFunctionContextDescriptor : public CallInterfaceDescriptor {
  public:
-  DECLARE_DESCRIPTOR(FastNewContextDescriptor, CallInterfaceDescriptor)
+  DECLARE_DESCRIPTOR(FastNewFunctionContextDescriptor, CallInterfaceDescriptor)
+  enum ParameterIndices { kFunctionIndex, kContextIndex };
 };
 
 class FastNewObjectDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(FastNewObjectDescriptor, CallInterfaceDescriptor)
 };
 
 class FastNewRestParameterDescriptor : public CallInterfaceDescriptor {
  public:
   DECLARE_DESCRIPTOR(FastNewRestParameterDescriptor, CallInterfaceDescriptor)
@@ skipping 429 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_