https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77621
--- Comment #14 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #13)
> Created attachment 39656 [details]
> patch for the ICE
+/* { dg-additional-options "-march=i686 -mtune=atom -msse2" { target ia32 } }
*/
You can use
/* { dg-additional-options "-mtune=atom -msse2" { target i?86-*-* x86_64-*-* }
} */
and the test will also break on x86_64.
