DUPQ
Broadcast indexed element within each quadword vector segment (unpredicated)
Unconditionally broadcast the indexed element within each 128-bit source vector segment to all elements of the corresponding destination vector segment. This instruction is unpredicated.
The immediate element index is in the range of 0 to 15 (bytes), 7 (halfwords), 3 (words) or 1 (doublewords).
Green
False
True
0
0
0
0
0
1
0
1
0
0
1
0
0
1
0
0
1
DUPQ <Zd>.<T>, <Zn>.<T>[<imm>]
if !HaveSVE2p1() && !HaveSME2p1() then UNDEFINED;
bits(5) imm = i1:tsz;
integer esize;
integer index;
case tsz of
when '0000' UNDEFINED;
when '1000' esize = 64; index = UInt(imm<4:4>);
when 'x100' esize = 32; index = UInt(imm<4:3>);
when 'xx10' esize = 16; index = UInt(imm<4:2>);
when 'xxx1' esize = 8; index = UInt(imm<4:1>);
integer n = UInt(Zn);
integer d = UInt(Zd);
<Zd>
Is the name of the destination scalable vector register, encoded in the "Zd" field.
<T>
Is the size specifier,
tsz
<T>
0000
RESERVED
xxx1
B
xx10
H
x100
S
1000
D
<Zn>
Is the name of the source scalable vector register, encoded in the "Zn" field.
<imm>
Is the immediate index, in the range 0 to one less than the number of elements in 128 bits, encoded in "i1:tsz".
CheckSVEEnabled();
constant integer VL = CurrentVL;
constant integer PL = VL DIV 8;
constant integer segments = VL DIV 128;
constant integer elements = 128 DIV esize;
bits(VL) operand = Z[n, VL];
bits(VL) result;
bits(esize) element;
for s = 0 to segments-1
element = Elem[operand, s * elements + index, esize];
Elem[result, s, 128] = Replicate(element, 128 DIV esize);
Z[d, VL] = result;