[builtins] Speed up TypedArrayInitialize in CodeStubAssembler

src/compiler/code-assembler.h

 // Copyright 2015 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_COMPILER_CODE_ASSEMBLER_H_
 #define V8_COMPILER_CODE_ASSEMBLER_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 402 matching lines @@
 
   // Helpers which delegate to RawMachineAssembler.
   Factory* factory() const;
   Isolate* isolate() const;
   Zone* zone() const;
 
   CodeAssemblerState* state() { return state_; }
 
   void BreakOnNode(int node_id);
 
+  bool UnalignedLoadSupported(const MachineType& machineType,
+                              uint8_t alignment) const;
+  bool UnalignedStoreSupported(const MachineType& machineType,
+                               uint8_t alignment) const;
+
  protected:
   void RegisterCallGenerationCallbacks(
       const CodeAssemblerCallback& call_prologue,
       const CodeAssemblerCallback& call_epilogue);
   void UnregisterCallGenerationCallbacks();
 
  private:
   RawMachineAssembler* raw_assembler() const;
 
   // Calls respective callback registered in the state.
@@ skipping 132 matching lines @@
   CodeAssemblerCallback call_epilogue_;
 
   DISALLOW_COPY_AND_ASSIGN(CodeAssemblerState);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_ASSEMBLER_H_