Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

duplex.ll
; RUN: llc -march=hexagon -filetype=obj -o - %s | llvm-objdump -d - | FileCheck %s

; CHECK: c0 3f 00 48 48003fc0

define i32 @foo() {
ret i32 0
}