Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2002-07-17-CastRef.ll
; RUN: opt < %s -passes=globaldce
;
define internal void @func() {
        ret void
}

define void @main() {
        %X = bitcast void ()* @func to i32*             ; <i32*> [#uses=0]
        ret void
}