https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81403
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Nov 23 08:30:41 2017 New Revision: 255092 URL: https://gcc.gnu.org/viewcvs?rev=255092&root=gcc&view=rev Log: 2017-11-23 Richard Biener <rguent...@suse.de> PR tree-optimization/81403 * tree-ssa-pre.c (get_representative_for): Add parameter specifying a block we need a leader relative to. (phi_translate_1): For nary processing require a leader from get_representative_for given we run expression simplification using match-and-simplify. Remove previous fix. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-pre.c