[U-Boot] [PATCH 1/2] armv8: apply -mgeneral-regs-only

[Tom Rini]

On Tue, Jul 04, 2017 at 06:38:10PM +0200, Dr. Philipp Tomsich wrote:
> Tom,
> 
> Please note that some GCC versions had a code-generation bug
> when -mgeneral-regs-only was used (we hit this for a customer in
> a vendor GCC we maintain):
> 	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64304
> 
> Until everyone upgrades to a recently recent GCC (or until UBoot
> enforces this next January), some people may hit hard-to-reproduce
> issues.
> 
> A better way to suppress SIMD generation would be to use:
> 	-march=armv8-a+nosimd

Ah, good to know.  Peng, please re-spin.

> 
> Regards,
> Philipp.
> 
> > On 04 Jul 2017, at 15:32, Tom Rini <trini at konsulko.com> wrote:
> > 
> > On Mon, Jul 03, 2017 at 09:14:07PM +0800, Peng Fan wrote:
> > 
> >> Pass -mgeneral-regs-only to GCC, if not compiler may generate
> >> instructions that use SIMD registers.
> >> 
> >> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> >> Cc: Albert Aribaud <albert.u.boot at aribaud.net>
> >> Cc: Tom Rini <trini at konsulko.com>
> > 
> > Reviewed-by: Tom Rini <trini at konsulko.com>
> > 
> > -- 
> > Tom
> > _______________________________________________
> > U-Boot mailing list
> > U-Boot at lists.denx.de
> > https://lists.denx.de/listinfo/u-boot
> 

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: Digital signature
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20170704/3c02b2b0/attachment.sig>