MOVAZ (tile to vector, two registers) -- A64

The instruction operates on two consecutive horizontal or vertical slices within a named ZA tile of the specified element size. The tile slices are zeroed after moving their contents to the destination vectors.

The consecutive slice numbers within the tile are selected starting from the sum of the slice index register and immediate offset, modulo the number of such elements in a vector. The immediate offset is a multiple of 2 in the range 0 to the number of elements in a 128-bit vector segment minus 2.

8-bit
(FEAT_SME2p1)

Decode for this encoding

if !IsFeatureImplemented(FEAT_SME2p1) then EndOfDecode(Decode_UNDEF); constant integer s = UInt('011':Rs); constant integer nreg = 2; constant integer esize = 8; constant integer d = UInt(Zd:'0'); constant integer n = 0; constant integer offset = UInt(off3:'0'); constant boolean vertical = V == '1';

16-bit
(FEAT_SME2p1)

Decode for this encoding

if !IsFeatureImplemented(FEAT_SME2p1) then EndOfDecode(Decode_UNDEF); constant integer s = UInt('011':Rs); constant integer nreg = 2; constant integer esize = 16; constant integer d = UInt(Zd:'0'); constant integer n = UInt(ZAn); constant integer offset = UInt(off2:'0'); constant boolean vertical = V == '1';

32-bit
(FEAT_SME2p1)

Decode for this encoding

if !IsFeatureImplemented(FEAT_SME2p1) then EndOfDecode(Decode_UNDEF); constant integer s = UInt('011':Rs); constant integer nreg = 2; constant integer esize = 32; constant integer d = UInt(Zd:'0'); constant integer n = UInt(ZAn); constant integer offset = UInt(o1:'0'); constant boolean vertical = V == '1';

64-bit
(FEAT_SME2p1)

Decode for this encoding

if !IsFeatureImplemented(FEAT_SME2p1) then EndOfDecode(Decode_UNDEF); constant integer s = UInt('011':Rs); constant integer nreg = 2; constant integer esize = 64; constant integer d = UInt(Zd:'0'); constant integer n = UInt(ZAn); constant integer offset = 0; constant boolean vertical = V == '1';

Assembler Symbols

<Zd1>

Is the name of the first scalable vector register of the destination multi-vector group, encoded as "Zd" times 2.

<Zd2>

Is the name of the second scalable vector register of the destination multi-vector group, encoded as "Zd" times 2 plus 1.

<HV>

Is the horizontal or vertical slice indicator, encoded in V:

V	<HV>
0	H
1	V

<Ws>	Is the 32-bit name of the slice index register W12-W15, encoded in the "Rs" field.

<offs1>	For the "8-bit" variant: is the first slice index offset, encoded as "off3" field times 2.
	For the "16-bit" variant: is the first slice index offset, encoded as "off2" field times 2.
	For the "32-bit" variant: is the first slice index offset, encoded as "o1" field times 2.
	For the "64-bit" variant: is the first slice index offset, with implicit value 0.

<offs2>	For the "8-bit" variant: is the second slice index offset, encoded as "off3" field times 2 plus 1.
	For the "16-bit" variant: is the second slice index offset, encoded as "off2" field times 2 plus 1.
	For the "32-bit" variant: is the second slice index offset, encoded as "o1" field times 2 plus 1.
	For the "64-bit" variant: is the second slice index offset, with implicit value 1.

<ZAn>	For the "16-bit" variant: is the name of the ZA tile ZA0-ZA1 to be accessed, encoded in the "ZAn" field.
	For the "32-bit" variant: is the name of the ZA tile ZA0-ZA3 to be accessed, encoded in the "ZAn" field.
	For the "64-bit" variant: is the name of the ZA tile ZA0-ZA7 to be accessed, encoded in the "ZAn" field.

Operation

CheckStreamingSVEAndZAEnabled(); constant integer VL = CurrentVL; if nreg == 4 && esize == 64 && VL < 256 then EndOfDecode(Decode_UNDEF); constant integer slices = VL DIV esize; constant bits(32) index = X[s, 32]; constant integer slice = ((UInt(index) - (UInt(index) MOD nreg)) + offset) MOD slices; for r = 0 to nreg-1 constant bits(VL) result = ZAslice[n, esize, vertical, slice + r, VL]; ZAslice[n, esize, vertical, slice + r, VL] = Zeros(VL); Z[d + r, VL] = result;

Operational information

If PSTATE.DIT is 1:

The execution time of this instruction is independent of:
- The values of the data supplied in any of its registers.
- The values of the NZCV flags.
The response of this instruction to asynchronous exceptions does not vary based on:
- The values of the data supplied in any of its registers.
- The values of the NZCV flags.

Internal version only: aarchmrs v2024-12_rel, pseudocode v2024-12_rel ; Build timestamp: 2024-12-15T22:18