Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: echo "%%T = type i32" | llvm-as > %t.1.bc ; RUN: llvm-as < %s > %t.2.bc ; RUN: llvm-link %t.1.bc %t.2.bc %T = type opaque @X = constant { %T* } zeroinitializer ; <{ %T* }*> [#uses=0]