Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

reuse-preserved-memoryssa.ll
; RUN: opt -memoryssa -gvn -early-cse-memssa %s -S | FileCheck %s

; CHECK: define void @foo(

define void @foo() {
  ret void
}