Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

arm-relocs.test
RUN: llvm-dwarfdump -v %p/Inputs/arm-relocs.elf-arm | FileCheck %s

; CHECK: debug_info contents
; CHECK: DW_TAG_enumeration_type
; CHECK-NEXT: DW_AT_name{{.*}} = "e1"