register itself.
* zeroing is either 1 or 0, and if set to 1, the operation must
place zeros in any element position where the predication mask is
- set to zero. If zeroing is set to 1, unpredicated elements *must*
+ set to zero. If zeroing is set to 0, unpredicated elements *must*
be left alone. Some microarchitectures may choose to interpret
this as skipping the operation entirely. Others which wish to
stick more closely to a SIMD architecture may choose instead to