https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98544
--- Comment #20 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:bdcde1504502719504a7a63ab10059e171694dc2 commit r11-6549-gbdcde1504502719504a7a63ab10059e171694dc2 Author: Richard Biener <rguent...@suse.de> Date: Fri Jan 8 13:17:18 2021 +0100 tree-optimization/98544 - more permute optimization fixes Permute nodes are not transparent to the permute of their children. Instead we have to materialize child permutes always and in future may treat permute nodes as the source of arbitrary permutes as we can permute the lane permutation vector at will (as the target supports in the end). 2021-01-08 Richard Biener <rguent...@suse.de> PR tree-optimization/98544 * tree-vect-slp.c (vect_optimize_slp): Always materialize permutes at a permute node. * gcc.dg/vect/bb-slp-pr98544.c: New testcase.
