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INDEX (immediates)
Create index starting from and incremented by immediate.
Populates the destination vector by setting the first element to the first signed immediate integer operand and monotonically incrementing the value by the second signed immediate integer operand for each subsequent element. This instruction is unpredicated.
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 | 0 | size | 1 | imm5b | 0 | 1 | 0 | 0 | 0 | 0 | imm5 | Zd |
if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer d = UInt(Zd); integer imm1 = SInt(imm5); integer imm2 = SInt(imm5b);
Assembler Symbols
<Zd> |
Is the name of the destination scalable vector register, encoded in the "Zd" field. |
<T> |
Is the size specifier,
encoded in
size:
|
<imm1> |
Is the first signed immediate operand, in the range -16 to 15, encoded in the "imm5" field. |
<imm2> |
Is the second signed immediate operand, in the range -16 to 15, encoded in the "imm5b" field. |
Operation
CheckSVEEnabled(); integer elements = VL DIV esize; bits(VL) result; for e = 0 to elements-1 integer index = imm1 + e * imm2; Elem[result, e, esize] = index<esize-1:0>; Z[d] = result;