[Bug middle-end/51442] volatile bitfields broken on arm

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51442

--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-12-07 10:55:17 UTC ---
(In reply to comment #2)
> Created attachment 26010 [details]
> Only use BLKmode for volatile accesses which are not naturally aligned.
> 
> Per Julian Brown's original email at
> http://gcc.gnu.org/ml/gcc-patches/2011-03/msg01477.html:
> 
>     gcc/
>     * expr.c (expand_expr_real_1): Only use BLKmode for volatile
>     accesses which are not naturally aligned.

If this patch is backported then so must:

http://gcc.gnu.org/ml/gcc-patches/2011-11/msg01390.html