[Bug tree-optimization/59047] [4.9 Regression] wrong code for bitfields at -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59047
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov  8 12:49:10 2013
New Revision: 204566

URL: http://gcc.gnu.org/viewcvs?rev=204566&root=gcc&view=rev
Log:
2013-11-08  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/59047
    * tree-predcom.c (ref_at_iteration): Handle bitfield accesses
    properly.

    * gcc.dg/torture/pr59047.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr59047.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-predcom.c