movmem pattern and missed alignment

[Eric Botcazou]

> It was repeatedly suggested that we _could_ derive alignment info from
> function parameter types since we rely on precise typing there for example
> for points-to analysis (albeit only for restrict qualification processing
> and for DECL_BY_REFERENCE "pointers").  That would fix the simple testcase
> that was presented here.

OK, I keep forgetting it and that would be a good compromise indeed.

-- 
Eric Botcazou