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

From: Alex Bennée
Subject: Re: [Qemu-devel] [PATCH for-3.1 0/7] target/ppc fp cleanups
Date: Wed, 04 Jul 2018 16:39:18 +0100
User-agent: mu4e 1.1.0; emacs 26.1.50

Programmingkid <address@hidden> writes:

>> On Jul 4, 2018, at 10:15 AM, Alex Bennée <address@hidden> wrote:
>> Richard Henderson <address@hidden> 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.

Alex Bennée

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