Improve API calls that return empty handles.

src/ia32/macro-assembler-ia32.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 1906 matching lines @@
   bind(&leave_exit_frame);
 
   // Check if the function scheduled an exception.
   ExternalReference scheduled_exception_address =
       ExternalReference::scheduled_exception_address(isolate());
   cmp(Operand::StaticVariable(scheduled_exception_address),
       Immediate(isolate()->factory()->the_hole_value()));
   j(not_equal, &promote_scheduled_exception);
   LeaveApiExitFrame();
   ret(stack_space * kPointerSize);
-  bind(&promote_scheduled_exception);
-  TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
 
   bind(&empty_handle);
   // It was zero; the result is undefined.
   mov(eax, isolate()->factory()->undefined_value());
   jmp(&prologue);
 
+  bind(&promote_scheduled_exception);
+  TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
+
   // HandleScope limit has changed. Delete allocated extensions.
   ExternalReference delete_extensions =
       ExternalReference::delete_handle_scope_extensions(isolate());
   bind(&delete_allocated_handles);
   mov(Operand::StaticVariable(limit_address), edi);
   mov(edi, eax);
   mov(Operand(esp, 0), Immediate(ExternalReference::isolate_address()));
   mov(eax, Immediate(delete_extensions));
   call(eax);
   mov(eax, edi);
@@ skipping 970 matching lines @@
   // Load the prototype from the map and loop if non-null.
   bind(&check_prototype);
   mov(ecx, FieldOperand(ebx, Map::kPrototypeOffset));
   cmp(ecx, isolate()->factory()->null_value());
   j(not_equal, &next);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32