[Bug middle-end/69347] [6 regression] excessive compile time with -O2

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69347

--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Manual git-bisect on gcc112 points to the same revision: r228739.