Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# RUN: rm -rf %t && mkdir -p %t # RUN: cd %t # RUN: echo "FOO" > foo.txt # RUN: llvm-ar -M < %S/Inputs/mri-crlf.mri # llvm-ar t crlf.a | FileCheck %s # CHECK: foo.txt