On Tue, Mar 04, 2008 at 10:50:17PM +0000, Paul Brook wrote: > > AFAIK the only reason we don't break this rule is that doing so would > > be grossly inefficient; there's nothing to stop any gcc back-end with > > (say) seriously slow DImode writes from using two SImode writes instead. > > I'm fairly sure ARM already breaks this "rule". >
Hm, just out of curiosity, does not Java require 32-bit stores to be atomic? I do not know Java well but I think it does. Do we observe this language-specific rule on ARM then? Do we do it because 32 bit is small enough or do we have a mechanism for that? Martin
