Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

windows-on-arm-tls-support.c
// RUN: %clang_cc1 -triple thumbv7--windows -fms-extensions -fsyntax-only -verify %s
// expected-no-diagnostics

__declspec(thread) int i;