On Fri, Aug 21, 2020 at 11:02:08AM -0700, Linus Torvalds wrote: > On Fri, Aug 21, 2020 at 10:54 AM Linus Torvalds > <torva...@linux-foundation.org> wrote: > > > > On Fri, Aug 21, 2020 at 10:29 AM Arvind Sankar <nived...@alum.mit.edu> > > wrote: > > > > > > This is why I'm saying clang's no-builtin-foo option is useful for > > > embedded: it doesn't prevent the programmer using __builtin_foo(), it > > > prevents the _compiler_ using __builtin_foo() on its own. > > > > And that's fine. But it's apparently not what gcc does. > > Oh, testing it seems to say that that is exactly what gcc does too. I > must have misunderstood some comment in this thread to mean otherwise. > > Linus
How are you testing it? https://godbolt.org/z/eahdGn
