(old) htmldiff from-(new)

SPLICE

Splice two vectors under predicate control.

Copy the first active to last active elements (inclusive) from the first source vector to the lowest-numbered elements of the result. Then set any remaining elements of the result to a copy of the lowest-numbered elements from the second source vector. The result is placed destructively in the first source vector.

313029282726252423222120191817161514131211109876543210
00000101size101100100PgZmZdn

SVE

SPLICE <Zdn>.<T>, <Pg>, <Zdn>.<T>, <Zm>.<T>

if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer g = UInt(Pg); integer dn =integer dst = UInt(Zdn); integer m =integer s1 = dst; integer s2 = UInt(Zm);

Assembler Symbols

<Zdn>

Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field.

<T> Is the size specifier, encoded in size:
size<T>
00B
01H
10S
11D
<Pg>

Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field.

<Zm>

Is the name of the second source scalable vector register, encoded in the "Zm" field.

Operation

CheckSVEEnabled(); integer elements = VL DIV esize; bits(PL) mask = P[g]; bits(VL) operand1 = Z[dn]; [s1]; bits(VL) operand2 = Z[m]; [s2]; bits(VL) result; integer x = 0; boolean active = FALSE; integer lastnum = LastActiveElement(mask, esize); if lastnum >= 0 then for e = 0 to lastnum active = active || ElemP[mask, e, esize] == '1'; if active then Elem[result, x, esize] = Elem[operand1, e, esize]; x = x + 1; elements = elements - x - 1; for e = 0 to elements Elem[result, x, esize] = Elem[operand2, e, esize]; x = x + 1; Z[dn] = result;[dst] = result;


Internal version only: isa v30.41v30.3, AdvSIMD v27.08v27.04, pseudocode r8p5_00bet2_rc5v85-xml-00bet9_rc1_1, sve v8.5-00bet10_rc5v8.5-00bet9_rc1 ; Build timestamp: 2019-03-28T062018-12-12T11:3450

Copyright © 2010-20192010-2018 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

(old) htmldiff from-(new)