Hi! On Thu, Jun 04, 2020 at 10:08:02PM +0000, Joseph Myers wrote: > > The ELFv2 document specifies things like passing of quadruple precision > > floats. Indeed, VSX is needed there, but that's not a concern if you > > *don't* use quadruple precision floats. > > My understanding is that the registers used for argument passing are all > ones that exactly correspond to the Vector registers in earlier > instruction set versions. In other words, you could *in principle* > produce an object, or a whole libm shared library, [...]
And then there is the VRSAVE register, if your OS still uses that. Let's hope not :-) This is similar to what -mno-float128-hardware does (which actually requires VSX hardware for the emulation library currently). Segher
