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From: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <85031ff4-cc90-32f7-1ec4-e342a5d52f34@linaro.org>
Date: Sat, 5 Jan 2019 08:14:37 +1000
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Subject: Re: [Qemu-devel] AVX support for TCG
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To: Nick Renieris <makren67@gmail.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>

On 1/5/19 8:09 AM, Nick Renieris wrote:
> Στις Παρ, 4 Ιαν 2019 στις 11:51 μ.μ., ο/η Richard Henderson
> <richard.henderson@linaro.org> έγραψε:
>> As an integer it is always passed by value.  As a structure some host abis pass
>> it by reference, and the TCG compiler doesn't know about that.
> 
> Ah so they modify it? If so it could surely be worked around with
> explicit stack copies, right?

No, it's just calling conventions.  And it could be worked around, but I think
what we have is convenient enough.

Especially since the sizes are encoded as (n+1)*8, which also shows the
compiler that the size is positive, so the for loop must iterate at least once.


r~