Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

trap-unreachable.ll
; RUN: llc -mtriple=thumbv7 -trap-unreachable < %s | FileCheck %s
; CHECK: .inst.n 0xdefe

define void @test() #0 {
  unreachable
}

attributes #0 = { nounwind }