Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

linkage2.ll
@test1_a = weak global i8 1

@test2_a = external dllimport global i8

@test3_a = common global i16 0

@test4_a = common global i16 0, align 4