[Mesa-dev] [Bug 67672] 9.2 git, Test failure in src/gallium/drivers/llvmpipe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67672

--- Comment #3 from Roland Scheidegger <sroland at vmware.com> ---
Does this also happen on master?
If so do you have a cpu with sse2 but not sse3 by chance? I think there might
potentially be a problem there with some tests because we set the FTZ but not
the DAZ flag (though just about all cpus except some very early p4 support that
flag even with only just sse2, but since trying to set it if it's not supported
results in a crash we don't try).
Some of these tests use denorms as inputs and I wouldn't expect reference to
really match generated code in this case (certainly those failing here all do
use denorms otherwise the reference would make no sense). Though I am actually
surprised to see reference giving values which look right for "ordinary"
denormal handling (as FTZ would still be set) but it would depend entirely on
what exactly the math library function does. In any case the failures should be
pretty harmless, but I don't know what would be the best way to fix them (other
than just to get rid of the denorm test cases).

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