On Mon, Aug 22, 2011 at 11:57:18AM +0200, Richard Guenther wrote:
> And at some point the idea popped up to just dump this whole re-using
> mem-attrs. There is at most a single function in RTL but the whole program
> is available in SSA, so the memory overhead must be small.
Some functions are extremely large though. Do you mean that MEM itself would be
enlarged to have the MEM_ATTRS field so that one operand is the address,
then expr, then HWI size, offset, etc.? Because if the mem attrs aren't
shared any longer, it doesn't make sense to keep the indirection.
I still fear we have way too many MEMs in RTL that this would be noticeable.
Jakub
