Re: [Qemu-devel] [PATCH for-3.1 0/7] target/ppc fp cleanups

[Programmingkid <programmingkidx@gmail.com>]

> On Jul 4, 2018, at 11:39 AM, Alex Bennée <alex.bennee@linaro.org> wrote:
> 
> 
> Programmingkid <programmingkidx@gmail.com> writes:
> 
>>> On Jul 4, 2018, at 10:15 AM, Alex Bennée <alex.bennee@linaro.org> wrote:
>>> 
>>> 
>>> Richard Henderson <richard.henderson@linaro.org> writes:
>>> 
>>>> 
>>>> Anyway, all of this has been broken long enough that it'll need to
>>>> wait til next devel cycle before anything further gets done.
>>> 
>>> When it gets done should we add some explicit ppc tests to tests/tcg/ppc
>>> like we did with arm64 fcvt or would it be worth spending more time on
>>> the general purpose FP test suite Emilio was working on as part of his
>>> hard-float series?
>> 
>> My vote goes to adding PowerPC specific tests. I already made some and sent them to the list a couple of days ago. A general purpose floating point test suite would probably not be able to test things like PowerPC floating point flags.
>> 
>> I'm not certain how we would add floating point tests to QEMU. I'm
>> guessing it would involve some kind of bootable image file that would
>> load and run the tests. Hopefully there is an easier way to implement
>> testing.
> 
> You don't need system tests - this is all testable from linux-user. See
> tests/tcg/arm/fcvt.c and the .ref files in arm and aarch64 directories.
> Assuming the test isn't insane (like test-i386-fprem) we can just add a
> reference output recorded on know good hardware.

My hope is to make testing the floating point unit as easy as 'make test' or maybe 'make fp-test'.