https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77498
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Mar 30 07:15:39 2017 New Revision: 246583 URL: https://gcc.gnu.org/viewcvs?rev=246583&root=gcc&view=rev Log: 2017-03-30 Richard Biener <rguent...@suse.de> PR tree-optimization/77498 * tree-ssa-pre.c (phi_translate_1): Do not allow simplifications to non-constants over backedges. * gfortran.dg/pr77498.f: New testcase. Added: trunk/gcc/testsuite/gfortran.dg/pr77498.f Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-pre.c