PEXT (predicate pair)

Predicate extract pair from predicate-as-counter

Converts the source predicate-as-counter into a four register wide predicate-as-mask, and copies the two portions of the mask value selected by the portion index to the two destination predicate registers. A portion corresponds to a one predicate register fraction of the wider predicate-as-mask value.

SVE2
(FEAT_SVE2p1)

if !IsFeatureImplemented(FEAT_SME2) && !IsFeatureImplemented(FEAT_SVE2p1) then UNDEFINED; constant integer esize = 8 << UInt(size); constant integer n = UInt('1':PNn); constant integer d0 = UInt(Pd); constant integer d1 = (UInt(Pd) + 1) MOD 16; constant integer part = UInt(i1);