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Groups > linux.kernel > #1174781
| From | "H. Peter Anvin" <hpa@zytor.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: gcc feature request / RFC: extra clobbered regs |
| Date | 2015-06-30 23:50 +0200 |
| Message-ID | <pHbzH-5V3-1@gated-at.bofh.it> (permalink) |
| References | <pHbgo-5xn-41@gated-at.bofh.it> <pHbq2-5IH-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 06/30/2015 02:37 PM, Jakub Jelinek wrote:
> I'd say the most natural API for this would be to allow
> f{fixed,call-{used,saved}}-REG in target attribute.
Either that or
__attribute__((fixed(rbp,rcx),used(rax,rbx),saved(r11)))
... just to be shorter. Either way, I would consider this to be
desirable -- I have myself used this to good effect in a past life
(*cough* Transmeta *cough*) -- but not a high priority feature.
-hpa
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gcc feature request / RFC: extra clobbered regs Andy Lutomirski <luto@kernel.org> - 2015-06-30 23:30 +0200
Re: gcc feature request / RFC: extra clobbered regs Jakub Jelinek <jakub@redhat.com> - 2015-06-30 23:40 +0200
Re: gcc feature request / RFC: extra clobbered regs "H. Peter Anvin" <hpa@zytor.com> - 2015-06-30 23:50 +0200
Re: gcc feature request / RFC: extra clobbered regs Andy Lutomirski <luto@amacapital.net> - 2015-06-30 23:50 +0200
Re: gcc feature request / RFC: extra clobbered regs "H. Peter Anvin" <hpa@zytor.com> - 2015-07-01 00:00 +0200
Re: gcc feature request / RFC: extra clobbered regs Andy Lutomirski <luto@amacapital.net> - 2015-07-01 00:00 +0200
Re: gcc feature request / RFC: extra clobbered regs "H. Peter Anvin" <hpa@zytor.com> - 2015-07-01 00:10 +0200
Re: gcc feature request / RFC: extra clobbered regs "H. Peter Anvin" <hpa@zytor.com> - 2015-06-30 23:40 +0200
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