[Bug tree-optimization/94969] [8/10 Regression] Invalid loop distribution since r8-2390-gdfbddbeb1ca912c9

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94969

--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Bin Cheng <amker@gcc.gnu.org>:

https://gcc.gnu.org/g:63c00a0c6543ce6d55e0ebc97ddbc1d36fb1289c

commit r10-8332-g63c00a0c6543ce6d55e0ebc97ddbc1d36fb1289c
Author: Bin Cheng <bin.cheng@linux.alibaba.com>
Date:   Sat Jun 20 14:24:31 2020 +0800

    Add missing unit dependence vector in data dependence analysis

    Current data dependence analysis misses unit distant vector if DRs in
    DDR have the same invariant access functions.  This adds the vector as
    the constant access function case.

    Also fix typo in testcase.

    Backport from master.

    2020-06-20  Bin Cheng  <bin.cheng@linux.alibaba.com>

    gcc/
            PR tree-optimization/94969
            * tree-data-ref.c (constant_access_functions): Rename to...
            (invariant_access_functions): ...this.  Add parameter.  Check for
            invariant access function, rather than constant.
            (build_classic_dist_vector): Call above function.
            * tree-loop-distribution.c (pg_add_dependence_edges): Add comment.

    gcc/testsuite/
            PR tree-optimization/94969
            * gcc.dg/tree-ssa/pr94969.c: New test.

    2020-06-20  Jakub Jelinek  <jakub@redhat.com>

    gcc/testsuite/
            PR tree-optimization/95110
            * gcc.dg/tree-ssa/pr94969.c: Swap scan-tree-dump-not arguments.