Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

x86_amx5.ll
; RUN: not llvm-as %s -o /dev/null 2>&1 | FileCheck %s

define void @f(x86_amx %A) {
entry:
  ret void
}
; CHECK: Function takes x86_amx but isn't an intrinsic