Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

eh-frame-unreachable.ll
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
; Test that we don't emit a row that extends beyond the FDE's range_size.
;
; CHECK: movq	%rsp, %rbp
; CHECK: ud2
; CHECK-NEXT:	.cfi_endproc
; CHECK-NOT: .cfi

define void @f() #0 {
  unreachable
}
attributes #0 = { "frame-pointer"="all" }