https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82726
--- Comment #7 from amker at gcc dot gnu.org --- Author: amker Date: Thu Feb 1 12:00:57 2018 New Revision: 257291 URL: https://gcc.gnu.org/viewcvs?rev=257291&root=gcc&view=rev Log: Backport from mainline 2017-11-15 Bin Cheng <bin.ch...@arm.com> PR tree-optimization/82726 PR tree-optimization/70754 * tree-predcom.c (order_drefs_by_pos): New function. (combine_chains): Move code setting has_max_use_after to... (try_combine_chains): ...here. New parameter. Sort combined chains according to position information. (tree_predictive_commoning_loop): Update call to above function. (update_pos_for_combined_chains, pcom_stmt_dominates_stmt_p): New. testsuite Backport from mainline 2017-11-15 Bin Cheng <bin.ch...@arm.com> PR tree-optimization/82726 * gcc.dg/tree-ssa/pr82726.c: New test. Backport from mainline 2017-01-23 Bin Cheng <bin.ch...@arm.com> PR tree-optimization/70754 * gfortran.dg/pr70754.f90: New test. Added: branches/gcc-6-branch/gcc/testsuite/gcc.dg/tree-ssa/pr82726.c branches/gcc-6-branch/gcc/testsuite/gfortran.dg/pr70754.f90 Modified: branches/gcc-6-branch/gcc/ChangeLog branches/gcc-6-branch/gcc/testsuite/ChangeLog branches/gcc-6-branch/gcc/tree-predcom.c
