https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95018
--- Comment #17 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> --- For this case, as you said, I also think it is better to avoid unrolling for the loop. '#pragma GCC unroll 1' could help to prevent the loop to be unrolled, even someone compiles it with aggressive unroll options. So, add pragma may be acceptable for in_pack_i4.c. And at the same time, we would also enhance GCC 'cunroll' for this kind of loop.
