Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -emit-llvm %s -o - -O1 | grep ashr // RUN: %clang_cc1 -emit-llvm %s -o - -O1 | not grep sdiv long long test(int *A, int *B) { return A-B; }