XAR
Bitwise exclusive OR and rotate right by immediate
Bitwise exclusive OR the corresponding elements of the first and second source vectors, then rotate each result element right by an immediate amount. The final results are destructively placed in the corresponding elements of the destination and first source vector. This instruction is unpredicated.
Green
False
True
True
0
0
0
0
0
1
0
0
1
0
0
1
1
0
1
XAR <Zdn>.<T>, <Zdn>.<T>, <Zm>.<T>, #<const>
if !IsFeatureImplemented(FEAT_SVE2) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED;
constant bits(4) tsize = tszh:tszl;
if tsize == '0000' then UNDEFINED;
constant integer esize = 8 << HighestSetBit(tsize);
constant integer m = UInt(Zm);
constant integer dn = UInt(Zdn);
constant integer rot = (2 * esize) - UInt(tsize:imm3);
<Zdn>
Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field.
<T>
Is the size specifier,
tszh
tszl
<T>
00
00
RESERVED
00
01
B
00
1x
H
01
xx
S
1x
xx
D
<Zm>
Is the name of the second source scalable vector register, encoded in the "Zm" field.
<const>
Is the immediate shift amount, in the range 1 to number of bits per element, encoded in "tszh:tszl:imm3".
CheckSVEEnabled();
constant integer VL = CurrentVL;
constant integer elements = VL DIV esize;
constant bits(VL) operand1 = Z[dn, VL];
constant bits(VL) operand2 = Z[m, VL];
bits(VL) result;
for e = 0 to elements-1
constant bits(esize) element1 = Elem[operand1, e, esize];
constant bits(esize) element2 = Elem[operand2, e, esize];
Elem[result, e, esize] = ROR(element1 EOR element2, rot);
Z[dn, VL] = result;