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Re: [PATCH ARM]Prefer neon for stringops on a53/a57 in AArch32 mode
- From: "Bin.Cheng" <amker dot cheng at gmail dot com>
- To: Bin Cheng <bin dot cheng at arm dot com>
- Cc: gcc-patches List <gcc-patches at gcc dot gnu dot org>, Ramana Radhakrishnan <Ramana dot Radhakrishnan at arm dot com>, Richard Earnshaw <rearnsha at arm dot com>
- Date: Tue, 16 Dec 2014 18:37:40 +0800
- Subject: Re: [PATCH ARM]Prefer neon for stringops on a53/a57 in AArch32 mode
- Authentication-results: sourceware.org; auth=none
- References: <000001cfff06$5c021240$140636c0$ at arm dot com>
On Thu, Nov 13, 2014 at 1:54 PM, Bin Cheng <bin.cheng@arm.com> wrote:
> Hi,
> As commented at https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00684.html,
> this is a simple patch enabling neon memset inlining on
> cortex-a53/cortex-a57 in AArch32 mode.
>
> Test on
> arm-none-linux-gnueabihf/--with-cpu=cortex-a57/--with-fpu=crypto-neon-fp-arm
> v8/--with-float=hard. I will further collect benchmark data, see if there
> is regression.
>
> Is it ok if benchmark results are good?
>
> 2014-11-13 Bin Cheng <bin.cheng@arm.com>
>
> * config/arm/arm.c (arm_cortex_a53_tune, arm_cortex_a57_tune):
> Prefer
> neon for stringops on cortex-a53/a57 in AArch32 mode.
I collected perf data for this patch, there is no obvious change on
cortex-a57/aarch32, so is it OK?
Thanks,
bin