https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107051

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to absoler from comment #2)
> for gcc-13.2.0 -O2, it seems still forget to remove the load for this
> reduced case:
> ```
> union U0 {
>     short f1;
>     int f2;
> };
> union U0 g1, g2;
> 
> volatile int flag;
> void func_1() {
>     union U0 d[1] = {{.f1 = 1}};
>     for (; flag;)
>         ;
>     d[0] = g2;
>     g1 = d[0];
> }
> ```

This one is handled on the trunk already.
the one in comment #0 is not handled yet.

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