Messages in this thread | | | Subject | Re: -freg-struct-return? | From | Arjan van de Ven <> | Date | Thu, 22 Feb 2007 09:04:23 +0100 |
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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
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