https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107247
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- This is now fixed for the cases not requiring permutations. One could think of a three-lane SLP reduction with three four component vectors being reduced by first "expanding" to four "three component" vectors, summing them and then extracting from the lower three lanes. Likewise for a six-lane SLP reduction which would get a more complex extraction of two-vector, six-lane pairs. Unless a compelling case comes along I don't consider these important.