[stubs] Cleanup FixedArray copying builtin

src/code-stub-assembler.h

 // 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.
 
 #ifndef V8_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 269 matching lines @@
                                            compiler::Node* length);
   // Allocated an JSArray
   compiler::Node* AllocateJSArray(ElementsKind kind, compiler::Node* array_map,
                                   compiler::Node* capacity,
                                   compiler::Node* length,
                                   compiler::Node* allocation_site = nullptr,
                                   ParameterMode mode = INTEGER_PARAMETERS);
 
   compiler::Node* AllocateFixedArray(ElementsKind kind,
                                      compiler::Node* capacity,
-                                     ParameterMode mode = INTEGER_PARAMETERS);
+                                     ParameterMode mode = INTEGER_PARAMETERS,
+                                     AllocationFlags flags = kNone);
 
   void FillFixedArrayWithHole(ElementsKind kind, compiler::Node* array,
                               compiler::Node* from_index,
                               compiler::Node* to_index,
                               ParameterMode mode = INTEGER_PARAMETERS);
 
   void CopyFixedArrayElements(
       ElementsKind kind, compiler::Node* from_array, compiler::Node* to_array,
       compiler::Node* element_count,
       WriteBarrierMode barrier_mode = UPDATE_WRITE_BARRIER,
@@ skipping 240 matching lines @@
   void CheckEnumCache(compiler::Node* receiver,
                       CodeStubAssembler::Label* use_cache,
                       CodeStubAssembler::Label* use_runtime);
 
   // Create a new weak cell with a specified value and install it into a
   // feedback vector.
   compiler::Node* CreateWeakCellInFeedbackVector(
       compiler::Node* feedback_vector, compiler::Node* slot,
       compiler::Node* value);
 
+  compiler::Node* GetFixedAarrayAllocationSize(compiler::Node* element_count,
+                                               ElementsKind kind,
+                                               ParameterMode mode) {
+    return ElementOffsetFromIndex(element_count, kind, mode,
+                                  FixedArray::kHeaderSize);
+  }
+
  private:
   enum ElementSupport { kOnlyProperties, kSupportElements };
 
   void HandleLoadICHandlerCase(
       const LoadICParameters* p, compiler::Node* handler, Label* miss,
       ElementSupport support_elements = kOnlyProperties);
   void EmitBoundsCheck(compiler::Node* object, compiler::Node* elements,
                        compiler::Node* intptr_key, compiler::Node* is_jsarray,
                        Label* miss);
   void EmitElementLoad(compiler::Node* object, compiler::Node* elements,
@@ skipping 13 matching lines @@
                                        AllocationFlags flags,
                                        compiler::Node* top_adddress,
                                        compiler::Node* limit_address);
 
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_