http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50704
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2011-10-12 17:36:05
UTC ---
(In reply to comment #5)
>
> So if I want to run the test only on 64-bit architectures, then lp64 is the
> correct choice in dg-require-effective-target?
>
> Artem.
x32 also has 64bit registers. You should use
/* { dg-do compile { target { ! { ia32 } } } } */
