[PATCH, PR43814] Assume function arguments of pointer type are aligned.

[David Miller]

From: Maxim Kuvyrkov <maxim@codesourcery.com>
Date: Thu, 29 Sep 2011 07:58:01 +1300

> To summarize, your opinion seems to be to not enable the
> optimization by default, correct?

Yes, and I don't think we ever could do so.

BTW, another common paradigm is using the "always clear" bits of a
pointer to encode state bits.