Re: [Qemu-arm] [Qemu-devel] [PATCH v1 7/9] tests/tcg: add float_madds test to multiarch

[Richard Henderson]

On 9/18/19 4:33 AM, Alex Bennée wrote:
>>> Ahh I was going to hardcode the arm madd instruction in as the builtin
>>> wasn't expanding. I tried setting -march in the CFLAGS but that didn't
>>> trigger it either on my buster arm-hf compiler. Any ideas how to get the
>>> compiler to do the right thing?
>>
>> I think you want -mfpu=neon-vfpv4.
> 
> Ahh that worked. I would have hoped that v8 would be enough to spit out
> aarch32 code which has to have VFPv4 for A profile right?

I would have thought so.  I'm not sure why -march=armv8-a wouldn't work.


r~