Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; RUN: not llvm-as < %s > /dev/null 2>&1 int %main() { start1: switch uint 0, label %brt0 [int 3, label %brt1 ] brt0: ret int 0 brt1: ret int 0 }