[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 #4 from ken moffat <zarniwhoop at ntlworld.com> ---
(In reply to comment #3)
> 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).

yes and yes.
model name      : AMD Phenom(tm) II X4 965 Processor
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni
monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a
misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr hw_pstate npt lbrv
svm_lock nrip_save

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