(old) | htmldiff from- | (new) |
Set scalar to count of true predicate elementselements.
Counts the number of active and true elements in the source predicate and places the scalar result in the destination general-purpose register. Inactive predicate elements are not counted.
.
Counts the number of active and true elements in the source predicate and places the scalar result in the destination general-purpose register. Inactive predicate elements are not counted.
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 | 1 | 0 | 0 | 1 | 0 | 1 | size | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | Pg | 0 | Pn | Rd |
if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer g = UInt(Pg); integer n = UInt(Pn); integer d = UInt(Rd);
<Xd> | Is the 64-bit name of the destination general-purpose register, encoded in the "Rd" field. |
<Pg> | Is the name of the governing scalable predicate register, encoded in the "Pg" field. |
<Pn> | Is the name of the source scalable predicate register, encoded in the "Pn" field. |
<T> | Is the size specifier,
encoded in
| ||||||||||
|
CheckSVEEnabled(); integer elements = VL DIV esize; bits(PL) mask = P[g]; bits(PL) operand = P[n]; bits(64) sum = Zeros(); for e = 0 to elements-1 if ElemP[mask, e, esize] == '1' && ElemP[operand, e, esize] == '1' then sum = sum + 1; X[d] = sum;
Internal version only: isa v32.12v32.06, AdvSIMD v29.04, pseudocode v2020-09_xmlv2020-06_rel, sve v2020-09_rc3v2020-06_rel0
; Build timestamp: 2020-11-18T172020-07-03T12:2342
Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.
(old) | htmldiff from- | (new) |