[Bug middle-end/85598] [7/8/9 Regression] Incorrect warning only at -O2 and -O3

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85598

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or, couldn't e.g. number of iterations analysis if it determines linear IV
adjust the value range?