https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87197
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Mon Sep 3 13:28:25 2018 New Revision: 264057 URL: https://gcc.gnu.org/viewcvs?rev=264057&root=gcc&view=rev Log: 2018-09-03 Richard Biener <rguent...@suse.de> PR tree-optimization/87197 * tree-ssa-sccvn.c (vn_nary_build_or_lookup_1): Mark the new def visited. CSE the VN_INFO hashtable lookup. * gcc.dg/torture/pr87197.c: New testcase. PR tree-optimization/87169 * tree-ssa-sccvn.c (do_rpo_vn): When marking loops for not iterating make sure there's no extra backedges from irreducible regions feeding the header. Mark the destination block executable. * gcc.dg/torture/pr87169.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr87169.c trunk/gcc/testsuite/gcc.dg/torture/pr87197.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-sccvn.c
