https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94406
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Jambor <jamb...@gcc.gnu.org>: https://gcc.gnu.org/g:ac91af71c93462cbc701bbd104fa21894bb15e86 commit r11-4983-gac91af71c93462cbc701bbd104fa21894bb15e86 Author: Martin Jambor <mjam...@suse.cz> Date: Fri Nov 13 15:35:18 2020 +0100 loops: Invoke lim after successful loop interchange This patch makes the entry point to loop invariant motion public, so that it can be called after loop interchange when that pass has swapped loops. This avoids the non-LTO -Ofast run-time regressions of 410.bwaves and 503.bwaves_r (which are 19% and 15% faster than current master on an AMD zen2 machine) while not introducing a full LIM pass into the pass pipeline. The patch also adds a parameter which allows not to perform any store motion so that it is not done after an interchange. gcc/ChangeLog: 2020-11-12 Martin Jambor <mjam...@suse.cz> PR tree-optimization/94406 * tree-ssa-loop-im.c (tree_ssa_lim): Renamed to loop_invariant_motion_in_fun, added a parameter to control store motion. (pass_lim::execute): Adjust call to tree_ssa_lim, now loop_invariant_motion_in_fun. * tree-ssa-loop-manip.h (loop_invariant_motion_in_fun): Declare. * gimple-loop-interchange.cc (pass_linterchange::execute): Call loop_invariant_motion_in_fun if any interchange has been done.
