Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

2003-10-09-PreserveWeakGlobals.ll
; Weak variables should be preserved by global DCE!

; RUN: opt < %s -passes=globaldce -S | FileCheck %s

; CHECK: @A
@A = weak global i32 54