[stubs] KeyedLoadIC_Megamorphic: inline fast-property lookups

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 730 matching lines @@
   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 DescriptorLookupLinear(compiler::Node* unique_name,
+                              compiler::Node* descriptors, compiler::Node* nof,
+                              Label* if_found, Variable* var_name_index,
+                              Label* if_not_found);
+
   void HandleLoadICHandlerCase(
       const LoadICParameters* p, compiler::Node* handler, Label* miss,
       ElementSupport support_elements = kOnlyProperties);
   compiler::Node* TryToIntptr(compiler::Node* key, Label* miss);
   void EmitFastElementsBoundsCheck(compiler::Node* object,
                                    compiler::Node* elements,
                                    compiler::Node* intptr_index,
                                    compiler::Node* is_jsarray_condition,
                                    Label* miss);
   void EmitElementLoad(compiler::Node* object, compiler::Node* elements,
@@ skipping 36 matching lines @@
                                            Label* bailout);
 
   static const int kElementLoopUnrollThreshold = 8;
 };
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_