Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding -mattr=+pauth < %s | FileCheck %s paciasp // CHECK: .text // CHECK: paciasp // encoding: [0x3f,0x23,0x03,0xd5]