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Re: [Qemu-devel] [PATCH v3 0/2] AVX2 configure fixes

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v3 0/2] AVX2 configure fixes
Date: Mon, 13 Jun 2016 11:31:00 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0

On 10/06/2016 13:16, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
> Hi,
>   This pair of patches fixes a couple of issues that we found during test.
> The first is that the configure test is pessimistic when compiled with -O2,
> the second is that the explicit 4.9 gcc test is a bit coarse; I've removed
> that test but beefed up the ./configure test to actually use the avx2
> intrinsics and that fails in the same way as the main code, so it works
> in the same way as the explicit check but allows older gcc's to work
> when -save-temps isn't used.
> Dave
> v3
>   Use compile_object rather than compile_prog as suggested by Peter to
>   hopefully fail on his ccache setup.

Queued, thanks.


> v2
>   Remove the explicit version check
>   Split the patches
> Dr. David Alan Gilbert (2):
>   Make avx2 configure test work with -O2
>   avx2 configure: Use primitives in test
>  configure     | 17 ++++++++++++-----
>  util/cutils.c |  8 +-------
>  2 files changed, 13 insertions(+), 12 deletions(-)

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