Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

printer.c
// RUN: %clang_cc1 -emit-llvm -mllvm -print-before-all %s -o %t 2>&1 | FileCheck %s --check-prefix=CHECK-BEFORE
// RUN: %clang_cc1 -emit-llvm -mllvm -print-after-all %s -o %t 2>&1 | FileCheck %s --check-prefix=CHECK-AFTER
// CHECK-BEFORE: *** IR Dump Before AlwaysInlinerPass
// CHECK-AFTER: *** IR Dump After AlwaysInlinerPass
void foo(void) {}