Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

global_metadata_external_comdat.ll
; RUN: opt < %s -mtriple=x86_64-linux -passes='asan-pipeline' -asan-globals-live-support=0 -S | FileCheck %s

$my_var = comdat any

@my_var = global i32 42, align 4, comdat
; CHECK: @my_var = global i32 42, comdat, align 4

; Don't instrument my_var, it is comdat.
; CHECK-NOT: call {{.*}}__asan_register_globals