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_amx1.ll
; RUN: not llvm-as %s -o /dev/null 2>&1 | FileCheck %s

@GV = dso_local global [10 x x86_amx] zeroinitializer, align 16
; CHECK: invalid array element type