[Bug ipa/97766] ipa/modref-2.c fails on 32 bits targets

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97766

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
There's target_double64 at least, so dg-require-effective-target double64