Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# RUN: llvm-mc --disassemble %s -triple=x86_64-apple-darwin9 2>&1 | grep "invalid instruction encoding" // This corresponds to a gather, but doesn't use a SIB byte. 0xc4,0xe2,0xe9,0x92,0x08