> -----Original Message----- > From: Tom Rini [mailto:[email protected]] > Sent: Wednesday, July 05, 2017 3:38 AM > To: Dr. Philipp Tomsich <[email protected]> > Cc: Peng Fan <[email protected]>; [email protected] > Subject: Re: [U-Boot] [PATCH 1/2] armv8: apply -mgeneral-regs-only > > 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.
Actually I followed Linux to use "mgeneral-regs-only" here. Since There is bug in some version gcc, I'll test and resend patch with using nosimd. Thanks, Peng. > > > > > Regards, > > Philipp. > > > > > On 04 Jul 2017, at 15:32, Tom Rini <[email protected]> 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 <[email protected]> > > >> Cc: Albert Aribaud <[email protected]> > > >> Cc: Tom Rini <[email protected]> > > > > > > Reviewed-by: Tom Rini <[email protected]> > > > > > > -- > > > Tom > > > _______________________________________________ > > > U-Boot mailing list > > > [email protected] > > > https://lists.denx.de/listinfo/u-boot > > > > -- > Tom _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
