Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

null-streamer.ll
; Test the null streamer with a terget streamer.
; RUN: llc -O0 -filetype=null -mtriple=mips-linux < %s

define i32 @main()  {
entry:
  ret i32 0
}