On Tue, 30 Jun 2020 at 15:34, Kyrylo Tkachov wrote:
>
>
>
> > -Original Message-
> > From: Christophe Lyon
> > Sent: 30 June 2020 14:32
> > To: Kyrylo Tkachov
> > Cc: gcc-patches@gcc.gnu.org
> > Subject: Re: [PATCH] arm: Warn if IRQ handler is not compiled with -
> > mgeneral-regs-only
> -Original Message-
> From: Christophe Lyon
> Sent: 30 June 2020 14:32
> To: Kyrylo Tkachov
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH] arm: Warn if IRQ handler is not compiled with -
> mgeneral-regs-only [PR target/94743]
>
> On Tue, 30 Jun 2020 at 15:16, Kyrylo Tkachov
>
On Tue, 30 Jun 2020 at 15:16, Kyrylo Tkachov wrote:
>
> Hi Christophe,
>
> Sorry for the delay.
>
> > -Original Message-
> > From: Gcc-patches On Behalf Of
> > Christophe Lyon via Gcc-patches
> > Sent: 29 April 2020 16:19
> > To: gcc-patches@gcc.gnu.org
> > Subject: [PATCH] arm: Warn if
Hi Christophe,
Sorry for the delay.
> -Original Message-
> From: Gcc-patches On Behalf Of
> Christophe Lyon via Gcc-patches
> Sent: 29 April 2020 16:19
> To: gcc-patches@gcc.gnu.org
> Subject: [PATCH] arm: Warn if IRQ handler is not compiled with -mgeneral-
> regs-only [PR target/94743]
The interrupt attribute does not guarantee that the FP registers are
saved, which can result in problems difficult to debug.
Saving the FP registers and status registers can be a large penalty,
so it's probably not desirable to do that all the time.
If the handler calls other functions, we'd
