[PATCH v2 2/2][ARM] Improve max_cond_insns setting for Cortex cores

[Christophe Lyon]

On Fri, 6 Dec 2019 at 11:47, Wilco Dijkstra <Wilco.Dijkstra@arm.com> wrote:
>
> Hi Christophe,
>
> > This patch (r278968) is causing regressions when building GCC
> > --target arm-none-linux-gnueabihf
> > --with-mode thumb
> > --with-cpu cortex-a57
> > --with-fpu crypto-neon-fp-armv8
> > because the assembler (gas version 2.33.1) complains:
> > /ccc7z5eW.s:4267: IT blocks containing more than one conditional
> > instruction are performance deprecated in ARMv8-A and ARMv8-R
> >
> > I guess that's related to what you say about -mrestrict-it ?
>
> Yes it looks like that unnecessary warning hasn't been silenced in latest binutils,
> but it should be easy to turn off.
>
Do you mean that binutils should be "fixed" not to emit this warning
(since you say it's unnecessary), or GCC made not to emit the
offending sequence?


> Cheers,
> Wilco