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From: Richard Henderson <richard.henderson@linaro.org>
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Date: Wed, 30 Jan 2019 10:22:01 -0800
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Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH v4 2/8] target/ppc: rework
 vmrg{l, h}{b, h, w} instructions to use Vsr* macros
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To: BALATON Zoltan <balaton@eik.bme.hu>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: qemu-devel@nongnu.org, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au

On 1/30/19 8:06 AM, BALATON Zoltan wrote:
> Also I wonder if you really need the result local? Can't it just access the
> result via *r directly and save a copy at the end? (Although that probably
> would be optimised out by the compiler anyway.)

I don't think so, because of potential overlap between *r and *a or *b.


r~