https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81388
--- Comment #10 from amker at gcc dot gnu.org --- Author: amker Date: Tue Jul 25 08:56:26 2017 New Revision: 250497 URL: https://gcc.gnu.org/viewcvs?rev=250497&root=gcc&view=rev Log: Backport from 2017-07-20 trunk r250384. PR tree-optimization/81388 Revert r238585: 2016-07-21 Bin Cheng <bin.ch...@arm.com> * tree-ssa-loop-niter.c (number_of_iterations_lt_to_ne): Clean up by removing computation of may_be_zero. gcc/testsuite PR tree-optimization/81388 * gcc.dg/tree-ssa/pr81388-1.c: New test. * gcc.dg/tree-ssa/pr81388-2.c: New test. Added: branches/gcc-7-branch/gcc/testsuite/gcc.dg/tree-ssa/pr81388-1.c branches/gcc-7-branch/gcc/testsuite/gcc.dg/tree-ssa/pr81388-2.c Modified: branches/gcc-7-branch/gcc/ChangeLog branches/gcc-7-branch/gcc/testsuite/ChangeLog branches/gcc-7-branch/gcc/tree-ssa-loop-niter.c