Improve API calls that return empty handles.

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 728 matching lines @@
   bind(&leave_exit_frame);
 
   // Check if the function scheduled an exception.
   movq(rsi, scheduled_exception_address);
   Cmp(Operand(rsi, 0), factory->the_hole_value());
   j(not_equal, &promote_scheduled_exception);
 
   LeaveApiExitFrame();
   ret(stack_space * kPointerSize);
 
+  bind(&empty_result);
+  // It was zero; the result is undefined.
+  LoadRoot(rax, Heap::kUndefinedValueRootIndex);
+  jmp(&prologue);
+
   bind(&promote_scheduled_exception);
   TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
 
-  bind(&empty_result);
-  // It was zero; the result is undefined.
-  Move(rax, factory->undefined_value());
-  jmp(&prologue);
-
   // HandleScope limit has changed. Delete allocated extensions.
   bind(&delete_allocated_handles);
   movq(Operand(base_reg, kLimitOffset), prev_limit_reg);
   movq(prev_limit_reg, rax);
 #ifdef _WIN64
   LoadAddress(rcx, ExternalReference::isolate_address());
 #else
   LoadAddress(rdi, ExternalReference::isolate_address());
 #endif
   LoadAddress(rax,
@@ skipping 3721 matching lines @@
   bind(&check_prototype);
   movq(rcx, FieldOperand(rbx, Map::kPrototypeOffset));
   cmpq(rcx, null_value);
   j(not_equal, &next);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64