Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
@ RUN: not llvm-mc -triple=arm-linux-gnueabi -filetype=obj < %s 2>&1 | FileCheck %s .text cmp r0, #(l1 - unknownLabel + 4) >> 2 @ CHECK: error: expected relocatable expression l1: