[Bug rtl-optimization/68955] [6 Regression] wrong code at -O3 on x86-64-linux-gnu in 32-bit mode

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68955

--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 11 09:23:06 2016
New Revision: 233331

URL: https://gcc.gnu.org/viewcvs?rev=233331&root=gcc&view=rev
Log:
        Backported from mainline
        2016-01-19  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/68955
        PR rtl-optimization/64557
        * dse.c (record_store, check_mem_read_rtx): Don't call get_addr
        here.  Fix up formatting.
        * alias.c (get_addr): Handle VALUE +/- CONST_SCALAR_INT_P.

        * gcc.dg/torture/pr68955.c: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/torture/pr68955.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/alias.c
    branches/gcc-4_9-branch/gcc/dse.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog