https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88271
--- Comment #8 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> --- I have results from Callgrind. Cycle estimation for MoveRows function (without children) is 58.29%. This is for app without test instruction. So in synthetic benchmark for this function only speed change would be about 2%.