[Bug 89785] GPU Fault 147 and Ring Stalls and Tests Fail in Pillars of Eternity

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Apr 1 18:43:28 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=89785

--- Comment #12 from Michel Dänzer <michel at daenzer.net> ---
Comment on attachment 114780
  --> https://bugs.freedesktop.org/attachment.cgi?id=114780
Fix for bug described in commet 4

Review of attachment 114780:
-----------------------------------------------------------------

I think it would be better if SI_KILL could be fixed not to clobber VCC in the
first place, e.g. by using the 64-bit encoding of the v_cmp(x)_lt_f32[0]
instruction. But failing that, this looks good.

[0] BTW, it's currently using v_cmpx_le_f32, but I think that's incorrect, as
the comment says "Clear this thread from the exec mask if the operand is
negative".

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