https://bugs.kde.org/show_bug.cgi?id=442168
--- Comment #8 from Julian Seward <jsew...@acm.org> ---
(In reply to Xavier Roche from comment #7)
I checked V's {V,}MOVSD implementation more, and still find no problem
I think this is unrelated to those insns.
If I had to guess, I'd say it *might* be related to the use of
+ vcmpneq_oqsd .LCPI1_1(%rip), %xmm1, %xmm1
since the implementation is a bit shaky:
// 0xC: this isn't really right because it returns all-1s when
// either operand is a NaN, and it should return all-0s.
case 0x4: XXX(False, False, Iop_CmpEQ32Fx4, True); break; // NEQ_UQ
case 0xC: XXX(False, False, Iop_CmpEQ32Fx4, True); break; // NEQ_OQ
(from `findSSECmpOp`). But that's just a guess; without a way to reproduce
the failure, I think the chances of resolving this is pretty low.
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