[Bug rtl-optimization/64037] [4.8/4.9 Regression] Miscompilation with -Os and enum class : char parameter

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64037

--- Comment #19 from Uroš Bizjak <ubizjak at gmail dot com> ---
This patch caused PR64213.