[cfe-dev] compiler-rt non-neon builds are still broken

[Renato Golin]

On 14 December 2014 at 14:02, İsmail Dönmez <ismail at donmez.ws> wrote:
> Scratch that, doesn't seem to work for my cross-build setup. But seems
> to work on native ARM builder. Weird.

Hi Ismail,

@ is the comment character in ARM assembly, but not always recognised? Not sure.

Anyway, we should not even try to unwind D16~D31 when you compile the
library with VFPv3-D16. If we had push/pop for .cpu and .fpu for ARM,
we could fix that one pretty quickly, but we don't.

My guess is that we should not be emitting that line at all, so
replacing __ARM_FP by __ARM_NEON would be the right thing, and only
emitting stcl when ARCH < 7 and vstmia otherwise.

If that works, it'll depend on how you compile your library, and it'd
be good to know how people do that and what do they expect to see. For
instance, I don't expect to see that function be called at all when
ARCH < 7 && !NEON.

cheers,
--renato