Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# Write an XFAIL test for this `FIXME` in `AVRInstrInfo.td` ``` // :FIXME: DAGCombiner produces an shl node after legalization from these seq: // BR_JT -> (mul x, 2) -> (shl x, 1) ```