DUPM

Broadcast logical bitmask immediate to vector (unpredicated)

This instruction unconditionally broadcasts the logical bitmask immediate into each element of the destination vector. This instruction is unpredicated. The immediate is a 64-bit value consisting of a single run of ones or zeros repeating every 2, 4, 8, 16, 32, or 64 bits.

This instruction is used by the alias MOV.

SVE class

(FEAT_SVE || FEAT_SME)

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
0	0	0	0	0	1	0	1	1	1	0	0	0	0	imm13													Zd

Encoding

DUPM <Zd>.<T>, #<const>

Decode

if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 64; let d : integer = UInt(Zd); var imm : bits(esize); (imm, -) = DecodeBitMasks{esize}(imm13[12], imm13[5:0], imm13[11:6], TRUE);

Assembler Symbols

<Zd>	Is the name of the destination scalable vector register, encoded in the "Zd" field.

<T>

Is the size specifier, encoded in imm13:

imm13	<T>
0xxxxxx0xxxxx	S
0xxxxxx10xxxx	H
0xxxxxx110xxx	B
0xxxxxx1110xx	B
0xxxxxx11110x	B
0xxxxxx11111x	RESERVED
1xxxxxxxxxxxx	D

<const>

Is a 64, 32, 16, or 8-bit bitmask consisting of replicated 2, 4, 8, 16, 32, or 64-bit fields, each field containing a rotated run of nonzero bits, encoded in the "imm13" field.

Alias Conditions

Alias	Is preferred when
MOV	SVEMoveMaskPreferred(imm13)

Operation

CheckSVEEnabled(); let VL : integer{} = CurrentVL(); let result : bits(VL) = Replicate{}(imm); Z{VL}(d) = result;

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