Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

static-init-2.cpp
// RUN: %clang_cc1 -emit-llvm-only -verify %s
// expected-no-diagnostics

// Make sure we don't crash generating y; its value is constant, but the
// initializer has side effects, so EmitConstantExpr should fail.
int x();
int y = x() & 0;