[Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89008

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r236440 and was fixed with r263875.