Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: llc -mtriple=x86_64-unknown-unknown -stop-after branch-folder -o - %s 2>&1 | FileCheck %s define void @"\01?f@@YAXXZ"() { ; CHECK: name: "\x01?f@@YAXXZ" ret void }