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Date: Wed, 4 Apr 2018 17:39:38 -0400
From: "Emilio G. Cota" <cota@braap.org>
Message-ID: <20180404213938.GA28643@flamenco>
References: <20180207225540.31698-1-richard.henderson@linaro.org>
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	<20180404164908.GA7582@flamenco> <878ta2de2z.fsf@linaro.org>
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Subject: Re: [Qemu-devel] [PULL 16/20] target/arm: Use vector infrastructure
 for aa64 compares
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To: Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>
Cc: Richard Henderson <richard.henderson@linaro.org>, qemu-devel@nongnu.org, peter.maydell@linaro.org

On Wed, Apr 04, 2018 at 19:24:52 +0100, Alex Bennée wrote:
> 
> Emilio G. Cota <cota@braap.org> writes:
> 
> > On Wed, Feb 07, 2018 at 14:55:36 -0800, Richard Henderson wrote:
> >> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
> >> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> >> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> >
> > Just bisected a segfault for aarch64 nbench on a PowerPC host
> > to this commit (79d61de6bdc398). I've also tested on x86_64 and
> > aarch64 hosts, and these do not seem to be affected.
> 
> I wonder about other hosts without TCG_vec backend support (powerpc is
> one)? I suspect it must be the fall-back for the vector expanders is
> wrong.

I just tried on two additional machines:

- Reproduced on a different PowerPC host with different endianness
  (gcc110, which is power7 and therefore big endian)

- Could not reproduce on a mips64 host (gcc23)

So it might be a Power-only thing.

Thanks,

		Emilio