[Bug rtl-optimization/58831] [4.8/4.9 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu in 64-bit mode

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58831

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Oct 25 09:24:02 2013
New Revision: 204056

URL: http://gcc.gnu.org/viewcvs?rev=204056&root=gcc&view=rev
Log:
    PR rtl-optimization/58831
    * alias.c (init_alias_analysis): At the beginning of each iteration, set
    the reg_seen[N] bit if static_reg_base_value[N] is non-null.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.c-torture/execute/pr58831.c
      - copied unchanged from r204055,
trunk/gcc/testsuite/gcc.c-torture/execute/pr58831.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/alias.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog