Identifying a block copy

[Pranav Bhandarkar]

On 10/9/07, Daniel Berlin <dberlin@dberlin.org> wrote:
> Yes
> we do not create subvars for non-named memory locations.  IE random
> pointer dereferences.
>
> This is mainly because it would require a lot of time and memory in
> the compiler.
>
> It was done because most optimizers rely solely on vdef/vuses, instead
> of further disambiguating the memory dependence chains.

ok, makes sense.

> In any case, it's not clear why you care about subvars at all here.
> If you want to identify block copies, simply look for assignments
> between AGGREGATE_TYPE_P trees.

Aha, this would be neater.

Thanks for pointing me in the right direction.

cheers!
Pranav