[Bug tree-optimization/88497] Improve Accumulation in Auto-Vectorized Code

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88497

--- Comment #10 from Kewen Lin <linkw at gcc dot gnu.org> ---
Author: linkw
Date: Mon Jul 15 05:12:05 2019
New Revision: 273490

URL: https://gcc.gnu.org/viewcvs?rev=273490&root=gcc&view=rev
Log:
gcc/ChangeLog

2019-07-15  Kewen Lin  <linkw@gcc.gnu.org>

    PR tree-optimization/88497
    * tree-ssa-reassoc.c (reassociate_bb): Swap the positions of
    GIMPLE_BINARY_RHS check and gimple_visited_p check, call new
    function undistribute_bitref_for_vector.
    (undistribute_bitref_for_vector): New function.
    (cleanup_vinfo_map): Likewise.
    (sort_by_mach_mode): Likewise.

gcc/testsuite/ChangeLog

2019-07-15  Kewen Lin  <linkw@gcc.gnu.org>

    PR tree-optimization/88497
    * gcc.dg/tree-ssa/pr88497-1.c: New test.
    * gcc.dg/tree-ssa/pr88497-2.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-3.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-4.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-5.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-6.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-7.c: Likewise.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-4.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-5.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-6.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr88497-7.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c