https://bugs.kde.org/show_bug.cgi?id=485148

--- Comment #10 from Petr <kobalicek.p...@gmail.com> ---
BTW are you sure about the patch?

Basically what SS operations do:

  DST[31..0] = result
  DST[127..32] = unchanged
  DST[vLen..128] = 0

So the high part of the YMM register should be zeroed, but the zeroing seems to
be commented out. Similarly, SD operation would preserve the high part of XMM
register, but would zero the high part of YMM register.

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