[array] Fast allocation in Array.p.map

src/code-stub-assembler.cc

 // Copyright 2016 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.
 #include "src/code-stub-assembler.h"
 #include "src/code-factory.h"
 #include "src/frames-inl.h"
 #include "src/frames.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 8828 matching lines @@
                        Heap::kEmptyFixedArrayRootIndex);
   StoreObjectFieldNoWriteBarrier(iterator,
                                  JSArrayIterator::kIteratedObjectOffset, array);
   StoreObjectFieldNoWriteBarrier(iterator, JSArrayIterator::kNextIndexOffset,
                                  SmiConstant(Smi::FromInt(0)));
   StoreObjectFieldNoWriteBarrier(
       iterator, JSArrayIterator::kIteratedObjectMapOffset, array_map);
   return iterator;
 }
 
-Node* CodeStubAssembler::ArraySpeciesCreate(Node* context, Node* originalArray,
-                                            Node* len) {
-  // TODO(mvstanton): Install a fast path as well, which avoids the runtime
-  // call.
-  Node* constructor =
-      CallRuntime(Runtime::kArraySpeciesConstructor, context, originalArray);
-  return ConstructJS(CodeFactory::Construct(isolate()), context, constructor,
-                     len);
-}
-
 Node* CodeStubAssembler::IsDetachedBuffer(Node* buffer) {
   CSA_ASSERT(this, HasInstanceType(buffer, JS_ARRAY_BUFFER_TYPE));
 
   Node* buffer_bit_field = LoadObjectField(
       buffer, JSArrayBuffer::kBitFieldOffset, MachineType::Uint32());
   return IsSetWord32<JSArrayBuffer::WasNeutered>(buffer_bit_field);
 }
 
 CodeStubArguments::CodeStubArguments(CodeStubAssembler* assembler, Node* argc,
                                      Node* fp,
@@ skipping 211 matching lines @@
         formatted.c_str(), TENURED);
     CallRuntime(Runtime::kGlobalPrint, NoContextConstant(),
                 HeapConstant(string));
   }
   CallRuntime(Runtime::kDebugPrint, NoContextConstant(), tagged_value);
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8