Messages in this thread | | | From | Arvind Sankar <> | Date | Fri, 21 Aug 2020 15:14:58 -0400 | Subject | Re: [PATCH 0/4] -ffreestanding/-fno-builtin-* patches |
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On Fri, Aug 21, 2020 at 11:02:08AM -0700, Linus Torvalds wrote: > On Fri, Aug 21, 2020 at 10:54 AM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > On Fri, Aug 21, 2020 at 10:29 AM Arvind Sankar <nivedita@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
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