Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

attr-target-ppc.c
// RUN: not %clang_cc1 -triple powerpc64le-linux-gnu -emit-llvm %s -o -

long __attribute__((target("power8-vector,no-vsx"))) foo (void) { return 0; }  // expected-error {{option '-mpower8-vector' cannot be specified with '-mno-vsx'}}