[Bug middle-end/60546] [4.8/4.9] O2 & asan enable generates wrong insns

[manjian2006 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60546

--- Comment #18 from linzj <manjian2006 at gmail dot com> ---
(In reply to rguenther@suse.de from comment #17)
> On Mon, 17 Mar 2014, manjian2006 at gmail dot com wrote:
> 
> > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60546
> > 
> > --- Comment #16 from linzj <manjian2006 at gmail dot com> ---
> > Yes,that may work.But what exactly go wrong in the original algorithm? I can't
> > change a correct algorithm just because it volatiles TBBA and make the compiler
> > generate wrong code.Because it's CORRECT logically.
> 
> You have to fix the memory reads from data[] to not read 'short's but
> to read 'char's.

Just out of curiosity , why this behavior causes tbba failure?And is that a
logical error?I am sure it's not an alignment error.
Interpreting a block of raw data from a temporary stack space as a short array
does not seem like any error to me.