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Re: [PATCH, ARM] Tuning for Cortex-M processors
- From: Ye Joey <joey dot ye dot cc at gmail dot com>
- To: Julian Brown <julian at codesourcery dot com>
- Cc: gcc-patches at gcc dot gnu dot org, ramana dot radhakrishnan at linaro dot org, rearnsha at arm dot com
- Date: Tue, 14 Aug 2012 17:43:42 +0800
- Subject: Re: [PATCH, ARM] Tuning for Cortex-M processors
- References: <20120720132434.7acac08b@octopus>
I'm sorry the conversation about this patch went to private
incidentally. Resend the key point.
On Tue, Jul 24, 2012 at 8:40 PM, Julian Brown <julian@codesourcery.com> wrote:
> On Mon, 23 Jul 2012 13:48:22 +0800
> Ye Joey <joey.ye.cc@gmail.com> wrote:
>
>> Since v7m and v6m are very different. It is high desired to have
>> separate tuning for them. Namely:
>> arm_cortex_v6m_tune and arm_cortex_v7m_tune. When created, they can
>> share the same tuning though.
>
> I understand the point, but I'm not convinced it buys anything -- and
> furthermore it suggests that effort has been spent on tuning for v6m
> and v7m devices separately, which isn't really true (at least as far
> as I and/or CodeSourcery/Mentor are concerned). The proper time to
> split the tunings is when it is discovered that they need to diverge
> from each other, IMO.
OK for now as I don't have a specific case in hand.