https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91200
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we're applying cselim to
if (a.0_1 != 0)
goto <bb 3>; [50.00%]
else
goto <bb 4>; [50.00%]
<bb 3> [local count: 766958447]:
# i_20 = PHI <i_22(D)(2)>
h[i_20] = &c;
<bb 4> [local count: 168730858]:
# i_21 = PHI <i_22(D)(2), i_20(3)>
where bb3 has only a single stmt but the PHI node precludes simply inserting
the stmt elsewhere.
The PHI node is left from non-iterating FRE which isn't able to do all
simplification in one go.
