Optimized nodeType dom binding by removing HandleScope and the preparation of ordinary c function c…

src/x64/macro-assembler-x64.h

 // Copyright 2012 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_X64_MACRO_ASSEMBLER_X64_H_
 #define V8_X64_MACRO_ASSEMBLER_X64_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/frames.h"
@@ skipping 1324 matching lines @@
   // Calls an API function.  Allocates HandleScope, extracts returned value
   // from handle and propagates exceptions.  Clobbers r14, r15, rbx and
   // caller-save registers.  Restores context.  On return removes
   // stack_space * kPointerSize (GCed).
   void CallApiFunctionAndReturn(Register function_address,
                                 ExternalReference thunk_ref,
                                 Register thunk_last_arg,
                                 int stack_space,
                                 Operand return_value_operand,
                                 Operand* context_restore_operand);
+  //
+  // Fast Calls an API function. No allocate of HandleScope, extracts returned
+  // value from handle and propagates exceptions.  Clobbers r14, r15, rbx and
+  // caller-save registers.  Restores context.  On return removes
+  // stack_space * kPointerSize (GCed).
+  void CallFastApiFunctionAndReturn(Register function_address,
+                                ExternalReference thunk_ref,
+                                Register thunk_last_arg,
+                                int stack_space,
+                                Operand return_value_operand,
+                                Operand* context_restore_operand);
 
   // Before calling a C-function from generated code, align arguments on stack.
   // After aligning the frame, arguments must be stored in rsp[0], rsp[8],
   // etc., not pushed. The argument count assumes all arguments are word sized.
   // The number of slots reserved for arguments depends on platform. On Windows
   // stack slots are reserved for the arguments passed in registers. On other
   // platforms stack slots are only reserved for the arguments actually passed
   // on the stack.
   void PrepareCallCFunction(int num_arguments);
 
@@ skipping 290 matching lines @@
     masm->popfq();                                                           \
   }                                                                          \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_