Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

debug-only-comments.s
        # RUN: llvm-mc -triple i386-linux-gnu -g -dwarf-version 4 < %s | FileCheck %s
        # RUN: llvm-mc -triple i386-linux-gnu -g -dwarf-version 5 < %s | FileCheck %s
        # CHECK: .section .debug_info
        # CHECK: .section .debug_info
        # CHECK-NOT: .section
        # CHECK: .ascii "<stdin>"