ZERO (quad-vector)

Zero ZA quad-vector groups

The instruction zeroes one, two, or four ZA quad-vector groups.

The quad-vector group within all of, each half of, or each quarter of the ZA array is selected by the sum of the vector select register and offset range, modulo all, half, or quarter the number of ZA array vectors.

The vector group symbol, VGx2 or VGx4, indicates that the ZA operand consists of two or four ZA quad-vector groups respectively.

It has encodings from 3 classes: One ZA quad-vector , Two ZA quad-vectors and Four ZA quad-vectors

One ZA quad-vector
(FEAT_SME2p1)

if !IsFeatureImplemented(FEAT_SME2p1) then UNDEFINED; constant integer v = UInt('010':Rv); constant integer offset = UInt(off2:'00'); constant integer ngrp = 1; constant integer nvec = 4;

Two ZA quad-vectors
(FEAT_SME2p1)

if !IsFeatureImplemented(FEAT_SME2p1) then UNDEFINED; constant integer v = UInt('010':Rv); constant integer offset = UInt(o1:'00'); constant integer ngrp = 2; constant integer nvec = 4;

Four ZA quad-vectors
(FEAT_SME2p1)

if !IsFeatureImplemented(FEAT_SME2p1) then UNDEFINED; constant integer v = UInt('010':Rv); constant integer offset = UInt(o1:'00'); constant integer ngrp = 4; constant integer nvec = 4;