[Bug target/96789] x264: sub4x4_dct() improves when vectorization is disabled

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96789

--- Comment #2 from Kewen Lin <linkw at gcc dot gnu.org> ---
Created attachment 49124
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49124&action=edit
sub4x4_dct SLP dumping