Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

aarch64-arguments.cpp
// RUN: %clang_cc1 -triple arm64-none-linux -emit-llvm -w -o - %s | FileCheck -check-prefix=PCS %s

// PCS: define{{.*}} void @{{.*}}(i8 %a
struct s0 {};
void f0(s0 a) {}