Re: -freg-struct-return?

Arjan van de Ven
2007-02-22T08:04:49Z

On Wed, 2007-02-21 at 17:28 -0800, Jeremy Fitzhardinge wrote:
> We have a number of functions which return small structures (such as
> pte_t). It seems that the kernel is not compiled with
> -freg-struct-return, so all these small structures are being returned
> via the stack, even though they would fit into registers.
>
> Is there a reason for this? Would -freg-struct-return be preferred? It
> would make a good compliment to -mregparm.

Do we know how many gcc bugs this has? (regparm used to have many)
other than that.. sounds like a win...

--
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org