https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110105
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rsandifo at gcc dot gnu.org
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org>
---
This is deliberate, since __fp16 is only a “storage type”:
all __fp16 arithmetic happens on float, a bit like all short
arithmetic happens in int.
It works if you use _Float16 instead:
_Float16 mul(_Float16 x, _Float16 y, _Float16 z)
{
return x * y + z;
}
vfma.f16 s2, s0, s1
vmov s0, s2 @ __fp16
bx lr
