Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

no-instruction-count-remarks.test
RUN: not llvm-remark-size-diff %p/Inputs/no-instruction-count-remarks.yaml %p/Inputs/no-instruction-count-remarks.yaml --parser=yaml 2>&1 | FileCheck %s

; CHECK: error: File {{.*}} did not contain any instruction-count remarks!