(old) htmldiff from-(new)

REV (predicate)

Reverse all elements in a predicate.

Reverse the order of all elements in the source predicate and place in the destination predicate. This instruction is unpredicated.

313029282726252423222120191817161514131211109876543210
00000101size1101000100000Pn0Pd

SVE

REV <Pd>.<T>, <Pn>.<T>

if !HaveSVE() then UNDEFINED; integer esize = 8 << UInt(size); integer n = UInt(Pn); integer d = UInt(Pd);

Assembler Symbols

<Pd>

Is the name of the destination scalable predicate register, encoded in the "Pd" field.

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

Is the name of the source scalable predicate register, encoded in the "Pn" field.

Operation

CheckSVEEnabled(); bits(PL) operand = P[n]; bits(PL) result = Reverse(operand, esize DIV 8); P[d] = result;

Operational information

If PSTATE.DIT is 1:


Internal version only: isa v30.44v30.42, AdvSIMD v27.08, pseudocode v8.5-2019-06_rc2-5-g22901f2future-20190403, sve v2019-06_rc4v8.5-00bet10_rc5 ; Build timestamp: 2019-06-26T222019-04-17T09:0458

Copyright © 2010-2019 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

(old) htmldiff from-(new)