[Bug tree-optimization/85597] [6/7 Regression] internal compiler error: in compute_live_loop_exits, at tree-ssa-loop-manip.c:229

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85597

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jun  7 10:10:00 2018
New Revision: 261269

URL: https://gcc.gnu.org/viewcvs?rev=261269&root=gcc&view=rev
Log:
2018-06-07  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2018-05-04  Richard Biener  <rguenther@suse.de>

        PR middle-end/85588
        * fold-const.c (negate_expr_p): Restrict negation of operand
        zero of a division to when we know that can happen without
        overflow.
        (fold_negate_expr_1): Likewise.

        * gcc.dg/torture/pr85588.c: New testcase.
        * gcc.dg/torture/pr57656.c: Use dg-additional-options.

        2018-05-02  Richard Biener  <rguenther@suse.de>

        PR middle-end/85567
        * gimplify.c (gimplify_save_expr): When in SSA form allow
        SAVE_EXPRs to compute to SSA vars.

        * gcc.dg/torture/pr85567.c: New testcase.

        2018-05-02  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/85597
        * tree-vect-stmts.c (vectorizable_operation): For ternary SLP
        do not use split vect_get_vec_defs call but call vect_get_slp_defs
        directly.

        * gcc.dg/vect/pr85597.c: New testcase.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr85567.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr85588.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/vect/pr85597.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/fold-const.c
    branches/gcc-7-branch/gcc/gimplify.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr57656.c
    branches/gcc-7-branch/gcc/tree-vect-stmts.c