Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

null-reg.txt
# RUN: llvm-mc -arch=amdgcn -mcpu=gfx1010 -show-encoding --disassemble < %s | FileCheck -check-prefix=GFX10 %s

0x7d,0x04,0x00,0x10
# GFX10: v_mul_f32_e32 v0, null, v2 ; encoding: [0x7d,0x04,0x00,0x10]

0x7d,0x7d,0x7d,0x80
# GFX10: s_add_u32 null, null, null ; encoding: [0x7d,0x7d,0x7d,0x80]