Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 %s -emit-llvm -fprofile-instrument=clang -fprofile-update=atomic -o - | FileCheck %s // CHECK: define {{.*}}@foo // CHECK-NOT: load {{.*}}foo // CHECK: ret void void foo(void) {}