Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2003-09-09-VolatileLoadElim.ll
; RUN: opt < %s -passes=instcombine -S | grep load

define void @test(i32* %P) {
        ; Dead but not deletable!
        %X = load volatile i32, i32* %P              ; <i32> [#uses=0]
        ret void
}