Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
; REQUIRES: default_triple ; RUN: llc -o /dev/null -O2 -time-trace -time-trace-granularity=100 -time-trace-file=%t.json ; RUN: FileCheck --input-file=%t.json %s ; CHECK: "traceEvents" define void @f() { ret void }