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Re: [Qemu-devel] [PATCH v3 0/5] refactor float-to-float and fix AHP

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH v3 0/5] refactor float-to-float and fix AHP
Date: Thu, 10 May 2018 13:55:07 +0100

On 10 May 2018 at 10:42, Alex Bennée <address@hidden> wrote:
> Hi,
> Hi,
> I've not included the test case in the series but you can find it in
> my TCG fixup branch:
> https://github.com/stsquad/qemu/blob/testing/tcg-tests-revival-v4/tests/tcg/arm/fcvt.c
> Some of the ARMv7 versions are commented out as they where not
> supported until later revs. I do have a build that includes that but
> unfortunately the Debian compiler it too old to build it.
> : patch 0001/fpu softfloat int_to_float ensure r fully initial.patch needs 
> review
> : patch 0004/target arm convert conversion helpers to fpst ahp.patch needs 
> review
> : patch 0005/target arm squash FZ16 behaviour for conversions.patch needs 
> review

This still seems to regress the NaN conversion case I mentioned
in review of the previous series:

(3) Here's a NaN case we get wrong now: 64 to IEEE-16 conversion,
input is 0x7ff0000000000001 (an SNaN), we produce
0x7c00 (infinity) but should produce 0x7e00 (a QNaN).

-- PMM

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