Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 %s -emit-llvm -O1 -o - // REQUIRES: LP64 typedef long intptr_t; int test(void *b) { intptr_t a; __asm__ __volatile__ ("%0 %1 " : "=r" (a): "0" (b)); return a; }