[Bug middle-end/58570] [4.9 Regression] wrong code for bitfields at -O2 and above

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58570

--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Oct  9 12:59:02 2013
New Revision: 203315

URL: http://gcc.gnu.org/viewcvs?rev=203315&root=gcc&view=rev
Log:
    PR middle-end/58570
    * tree-ssa-alias.c (nonoverlapping_component_refs_of_decl_p): Return
    false if both components are bitfields.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr58570.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c