Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# RUN: llvm-mc -triple x86_64-unknown-darwin %s | FileCheck %s # CHECK: __DATA,__thread_data,thread_local_regular # CHECK: _a$tlv$init: # CHECK: .quad 4 .tdata _a$tlv$init: .quad 4