[Bug tree-optimization/108710] Recognizing "rounding down to the nearest power of two"

[tkoenig at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108710

--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Actually, register allocation is OK for an architecture with destructive shifts
only.