fix performance regression on intel call api stubs

src/x64/interface-descriptors-x64.cc

 // 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 279 matching lines @@
       Representation::Integer32(),  // actual number of arguments
       Representation::Integer32(),  // expected number of arguments
   };
   data->Initialize(arraysize(registers), registers, representations);
 }
 
 
 void ApiFunctionDescriptor::Initialize(CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rsi,  // context
-      rax,  // callee
+      rdi,  // callee
       rbx,  // call_data
       rcx,  // holder
       rdx,  // api_function_address
-      rdi,  // actual number of arguments
+      rax,  // actual number of arguments
   };
   Representation representations[] = {
       Representation::Tagged(),     // context
       Representation::Tagged(),     // callee
       Representation::Tagged(),     // call_data
       Representation::Tagged(),     // holder
       Representation::External(),   // api_function_address
       Representation::Integer32(),  // actual number of arguments
   };
   data->Initialize(arraysize(registers), registers, representations);
 }
 
 
 void ApiAccessorDescriptor::Initialize(CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rsi,  // context
-      rax,  // callee
+      rdi,  // callee
       rbx,  // call_data
       rcx,  // holder
       rdx,  // api_function_address
   };
   Representation representations[] = {
       Representation::Tagged(),    // context
       Representation::Tagged(),    // callee
       Representation::Tagged(),    // call_data
       Representation::Tagged(),    // holder
       Representation::External(),  // api_function_address
   };
   data->Initialize(arraysize(registers), registers, representations);
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64