[Bug rtl-optimization/70222] Test miscompiled with -O1

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70222

--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul  7 21:49:58 2016
New Revision: 238140

URL: https://gcc.gnu.org/viewcvs?rev=238140&root=gcc&view=rev
Log:
        Backported from mainline
        2016-03-15  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/70222
        * combine.c (simplify_shift_const_1): For A >> B >> C LSHIFTRT
        optimization if mode is different from result_mode, queue up masking
        of the result in outer_op.  Formatting fix.

        * gcc.c-torture/execute/pr70222-1.c: New test.
        * gcc.c-torture/execute/pr70222-2.c: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.c-torture/execute/pr70222-1.c
    branches/gcc-4_9-branch/gcc/testsuite/gcc.c-torture/execute/pr70222-2.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/combine.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog