https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88760
--- Comment #26 from Segher Boessenkool <segher at gcc dot gnu.org> --- Yeah, and it probably should be a param (that different targets can default differently, per CPU probably). On most Power CPUs all loops take a minimum number of cycles per iteration (say, three), but that translates to a lot of instructions (say, >10). Small loops should probably be unrolled at -O2 already as well. Maybe fixed length loops only?
