Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

merge-small-unnamed-addr.ll
; RUN: opt -S -mergefunc < %s | FileCheck %s

; CHECK-NOT: @b

@x = constant { void ()*, void ()* } { void ()* @a, void ()* @b }
; CHECK: { void ()* @a, void ()* @a }

define internal void @a() unnamed_addr {
  ret void
}

define internal void @b() unnamed_addr {
  ret void
}