[Mesa-dev] [Bug 27512] Illegal instruction _mesa_x86_64_transform_points4_general

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27512

--- Comment #13 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Patrick Baggett from comment #11)
> Created attachment 120822 [details] [review]
> Use prefetcht1 instead of prefetch[w]
> 
> This should fix the SIGILL when running this code. It replaces 3DNow!
> prefetch[w] instructions with SSE prefetcht1. I'm still not convinced that
> the prefetch logic actually has any beneficial performance characteristics.

I don't see much point though in replacing the prefetch[w] instructions in the
3dnow functions however. Though I'd guess since this is x86_64 it should still
work...

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