16.127 REV64

Reverse Bytes.

This instruction is an alias of REV.

The equivalent instruction is REV Xd, Xn.

Syntax

REV64 Xd, Xn

Where:

Xd
Is the 64-bit name of the general-purpose destination register.
Xn
Is the 64-bit name of the general-purpose source register.

Usage

Reverse Bytes reverses the byte order in a 64-bit general-purpose register.

When assembling for Arm®v8.2, an assembler must support this pseudo-instruction. It is optional whether an assembler supports this pseudo-instruction when assembling for an architecture earlier than Armv8.2.

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