https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85726
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Thu Dec 6 10:45:47 2018 New Revision: 266848 URL: https://gcc.gnu.org/viewcvs?rev=266848&root=gcc&view=rev Log: PR tree-optimization/85726 * generic-match-head.c (optimize_successive_divisions_p): New function. * gimple-match-head.c (optimize_successive_divisions_p): Likewise. * match.pd: Don't combine successive divisions if they aren't exact and optimize_successive_divisions_p is false. * gcc.dg/tree-ssa/pr85726-1.c: New test. * gcc.dg/tree-ssa/pr85726-2.c: New test. * gcc.dg/tree-ssa/pr85726-3.c: New test. * gcc.dg/tree-ssa/pr85726-4.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr85726-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr85726-2.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr85726-3.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr85726-4.c Modified: trunk/gcc/ChangeLog trunk/gcc/generic-match-head.c trunk/gcc/gimple-match-head.c trunk/gcc/match.pd trunk/gcc/testsuite/ChangeLog
