Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

disable-output.c
// REQUIRES: x86-registered-target
// RUN: %clang_cc1 %s -emit-llvm-only -triple=i386-apple-darwin -o %t
// RUN: not rm %t
// RUN: %clang_cc1 %s -emit-codegen-only -triple=i386-apple-darwin -o %t
// RUN: not rm %t

// Test that output is not generated when emission is disabled.