[Bug rtl-optimization/122947] variant of pr117239.c still fails

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122947

--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 62986
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62986&action=edit
candidate fix (untested)