[Bug tree-optimization/93327] Performance degradation of povray benchmark from gcc 8.3.1 to gcc 9.2.1

[ming.chen1986 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93327

--- Comment #2 from Chen Ming <ming.chen1986 at gmail dot com> ---
Sorry for my late response. I'll confirm and update the compiler options here.