From: Richard Sandiford
Sent: 21 January 2021 13:40
To: Richard Biener
Cc: Joel Hutton via Gcc-patches ; Joel Hutton
Subject: Re: [AArch64] Remove backend support for widen-sub
Richard Biener writes:
> On Thu, 21 Jan 2021, Richard Sandiford wrote:
>
>> Joe
Richard Biener writes:
> On Thu, 21 Jan 2021, Richard Sandiford wrote:
>
>> Joel Hutton via Gcc-patches writes:
>> > Hi all,
>> >
>> > This patch removes support for the widening subtract operation in the
>> > aarch64 backend as it is causing a performance regression.
>> >
>> > In the following
On Thu, 21 Jan 2021, Richard Sandiford wrote:
> Joel Hutton via Gcc-patches writes:
> > Hi all,
> >
> > This patch removes support for the widening subtract operation in the
> > aarch64 backend as it is causing a performance regression.
> >
> > In the following example:
> >
> > #include
> > ex
Joel Hutton via Gcc-patches writes:
> Hi all,
>
> This patch removes support for the widening subtract operation in the aarch64
> backend as it is causing a performance regression.
>
> In the following example:
>
> #include
> extern void wdiff( int16_t d[16], uint8_t *restrict pix1, uint8_t *re
On Thu, Jan 21, 2021 at 12:37 PM Joel Hutton via Gcc-patches
wrote:
>
> Hi all,
>
> This patch removes support for the widening subtract operation in the aarch64
> backend as it is causing a performance regression.
>
> In the following example:
>
> #include
> extern void wdiff( int16_t d[16], ui
