Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

metadata-only-empty-string.ll
; RUN: llvm-as < %s | llvm-dis | FileCheck %s

; CHECK: !named = !{!0}
!named = !{!0}

; CHECK: !0 = !{!""}
!0 = !{!""}