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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Flightgear crashes during splashboot with R600 driver, LLVM 3.7.0 and mesa 11.0.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92214#c32">Comment # 32</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Flightgear crashes during splashboot with R600 driver, LLVM 3.7.0 and mesa 11.0.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92214">bug 92214</a>
from <span class="vcard"><a class="email" href="mailto:sroland@vmware.com" title="Roland Scheidegger <sroland@vmware.com>"> <span class="fn">Roland Scheidegger</span></a>
</span></b>
<pre>(In reply to Barto from <a href="show_bug.cgi?id=92214#c31">comment #31</a>)
<span class="quote">> llvm developper ( Craig Topper ) has answered this :
>
> <a href="https://llvm.org/bugs/show_bug.cgi?id=25021#c8">https://llvm.org/bugs/show_bug.cgi?id=25021#c8</a>
>
> he said that the remove of the SSE4 test for penryn CPUs ( including pentium
> dual core who don't support SSE4 ) was intentional,
>
> he advices mesa developpers to use the llvm function "getHostCPUFeatures()"
> in order to check if the CPU can support SSE4, before doing a llvm operation
> ( like a binary code generation ),
>
> I check in mesa source code and it seems that mesa developpers don't use
> this function "getHostCPUFeatures()",</span >
We do our own feature detection, though so far we didn't really tell llvm which
features it's allowed to use as we were relying on this getting detected
automatically.
I believe the patch posted by Jose here,
<a href="http://lists.freedesktop.org/archives/mesa-dev/2015-October/097948.html">http://lists.freedesktop.org/archives/mesa-dev/2015-October/097948.html</a> should
help.
(Though this bug appears to have nothing to do at all with the originally
posted issue)</pre>
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