Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# RUN: not llvm-mc -arch=hexagon -filetype=asm %s 2> %t; FileCheck %s < %t # # Check that changes to a read-only register is caught. { c9:8 = r1:0 } # CHECK: error: Cannot write to read-only register