[Bug rtl-optimization/102306] [9/10/11/12 Regression] Volatile pointer dereferenced twice

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102306

--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The patch in c#5 looks good.  Since you test added_sets_0 and added_sets_1
> as well, does this mean it could happen before this patch as well?

No idea, but it seems strange to disallow the copy for i2 and not the others.