Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: llvm-mc -triple avr -mattr=avr6 -filetype=obj < %s | llvm-objdump -r - | FileCheck %s ; CHECK: R_AVR_6_ADIW foo+0x3f adiw r24, foo+63