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References: <87sirhyi1b.fsf@linaro.org> <20140224130117.GC6747@jannau.net>
From: Alex =?utf-8?Q?Benn=C3=A9e?= <alex.bennee@linaro.org>
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Date: Tue, 25 Feb 2014 15:54:37 +0000
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Subject: Re: [Qemu-devel] Call for testing QEMU aarch64-linux-user emulation
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To: Janne Grunau <j@jannau.net>
Cc: Peter Maydell <peter.maydell@linaro.org>, linaro-dev <linaro-dev@lists.linaro.org>, Michael Matz <matz@suse.de>, Alexander Graf <agraf@suse.de>, "linaro-toolchain@lists.linaro.org" <linaro-toolchain@lists.linaro.org>, qemu-devel <qemu-devel@nongnu.org>, Wook Wookey <wookey@linaro.org>, Christoffer Dall <Christoffer.Dall@linaro.org>


Janne Grunau <j@jannau.net> writes:

> Hi,
>
> On 2014-02-17 13:40:00 +0000, Alex Bennée wrote:
>> 
<snip>
>
>> In my tree the remaining insns that the GCC aarch64 tests need to
>> implement are:
>>     FRECPE
>>     FRECPX
>>     CLS (2 misc variant)
>>     CLZ (2 misc variant)
>>     FSQRT

My GitHub tree now has fixes for the above as well as all pending A64
pull requests. The commits are:

34bbde5 * target-arm: A64: add remaining CLS/Z vector ops
96d890c * target-arm: A64: add FSQRT to C3.6.17 (two misc)
997e712 * target-arm: A64: fix bug in add_sub_ext an handling rn
c37ba93 * target-arm: A64: Add last AdvSIMD Integer to FP ops
1e35ff3 * target-arm: A64: Implement AdvSIMD reciprocal ops
46ec7d9 * peter/a64-working target-arm: A64: Implement PMULL instruction

>>     FRINTZ
>>     FCVTZS
>> 
>> Which I'm currently working though now. However for most build tasks I
>> expect the instructions in master [1] will be enough.
>
> Qemu master is enough to pass the tests with libav built with gcc 4.8.2,
> clang 3.3 and 3.4 (clang 3.4 build only with -O1, it fails otherwise).
>
>> Feedback I'm interested in
>> ==========================
>> 
>> * Any instruction failure (please include the log line with the
>>   unsupported message)
>
> Neon support is not complete enough to run the hand written neon
> assembler optimizations in libav. Currently failing on narrowing shifts.
<snip>

Have you got the log file "unsupported" line? I seem to recall you did
ping me but maybe it was just on IRC? I just want to make sure I
do the right ones. I'm working on this now.


Cheers,

--
Alex Bennée
QEMU/KVM Hacker for Linaro