[Bug tree-optimization/65492] Bad optimization in -O3 on SSE intrinsics

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri Mar 20 14:35:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65492

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Unrolling of the inner loop accounts for the rest (both conditional moves
with if-conversion applied and the branchy code if not seems to put a too
heavy load on the branch predictor(?) when inside another loop).



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