Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: llvm-mc -arch=amdgcn -mcpu=tonga -show-encoding %s | FileCheck -check-prefix=VI %s buffer_wbinvl1_vol // VI: buffer_wbinvl1_vol ; encoding: [0x00,0x00,0xfc,0xe0,0x00,0x00,0x00,0x00]