From: Michael Olbrich <m.olbrich@pengutronix.de>
To: ptxdist@pengutronix.de
Cc: Christian Melki <christian.melki@t2data.com>
Subject: Re: [ptxdist] [APPLIED] architecture.in: Add AltiVec tuning.
Date: Mon, 5 Dec 2022 13:53:49 +0100 [thread overview]
Message-ID: <20221205125349.2404267-1-m.olbrich@pengutronix.de> (raw)
In-Reply-To: <20221201084242.3929035-1-christian.melki@t2data.com>
Thanks, applied as de879a50a97c0cfbd7987ec6b11fbeede838e91f.
Michael
[sent from post-receive hook]
On Mon, 05 Dec 2022 13:53:49 +0100, Christian Melki <christian.melki@t2data.com> wrote:
> Even if it looks like PPC is a dying breed,
> add an altivec knob for PPC AltiVec/VMX/Velocity engine
> tuning. Altivec is present in more modern designs.
> Afaiu, Most designs that are >= Power ISA v.2.03
> According to Wikipedia:
>
> Motorola/Freescale
> MPC7400
> MPC7410
> MPC7450
> MPC7445/7455
> MPC7447/7447A/7457
> MPC7448
> MPC8641/8641D
> MPC8640/8640D
> MPC8610
> T2081/T2080
> T4080/T4160/T4240
> B4420/B4860
>
> IBM
> PowerPC 970
> PowerPC 970FX
> PowerPC 970MP
> Xenon
> Cell B.E.
> PowerXCell 8i
> POWER6/POWER6+
> POWER7/POWER7+
> POWER8
> POWER9
> Power10
>
> P.A. Semi
> PA6T
>
> Signed-off-by: Christian Melki <christian.melki@t2data.com>
> Message-Id: <20221201084242.3929035-1-christian.melki@t2data.com>
> Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
>
> diff --git a/platforms/architecture.in b/platforms/architecture.in
> index 10df8deb2aec..06ed36dde613 100644
> --- a/platforms/architecture.in
> +++ b/platforms/architecture.in
> @@ -269,6 +269,18 @@ config ARCH_ARMV7_NEON
> bool
> default ARCH_ARM_NEON if ARCH_ARM
>
> +#
> +# PPC vector instructions
> +#
> +config ARCH_PPC_ALTIVEC
> + bool
> + prompt "AltiVec/VMX/Velocity Engine"
> + depends on ARCH_PPC
> + help
> + This enables optimizations corresponding to single precision
> + floating point and integer SIMD instructions on PPC processors.
> + This is present on more modern CPUs.
> +
> #
> # hardware / software floating point
> #
prev parent reply other threads:[~2022-12-05 12:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-01 8:42 [ptxdist] [PATCH v2] " Christian Melki
2022-12-05 12:53 ` Michael Olbrich [this message]
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