https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64284
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Mon Dec 15 08:19:55 2014 New Revision: 218733 URL: https://gcc.gnu.org/viewcvs?rev=218733&root=gcc&view=rev Log: 2014-12-15 Richard Biener <rguent...@suse.de> PR tree-optimization/64284 * tree-ssa-threadupdate.c (duplicate_seme_region): Mark the loop for removal if we copied the loop header. * gcc.dg/torture/pr64284.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr64284.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-threadupdate.c