Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
RUN: llvm-cxxfilt -n _Z14returns_stringB5cxx11v _Z6globalB5cxx11 _Z6globalB12a_longer_tag | FileCheck %s CHECK: returns_string[abi:cxx11]() CHECK-NEXT: global[abi:cxx11] CHECK-NEXT: global[abi:a_longer_tag]