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Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-f
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp |
Date: |
Tue, 06 Feb 2018 20:45:38 +0000 |
User-agent: |
mu4e 1.0-alpha3; emacs 26.0.91 |
Peter Maydell <address@hidden> writes:
> On 4 February 2018 at 04:11, Richard Henderson
> <address@hidden> wrote:
>> Or there's the code from glibc. I know Peter didn't like the idea;
>> debugging this code is fairly painful -- the massive preprocessor
>> macros mean that you can't step through anything. But at least we
>> have a good relationship with glibc, so merging patches back and
>> forth should be easy.
>
> Yeah. I didn't like dealing with this code two decades ago
> when I first encountered it, and it hasn't improved any.
> It's pretty much write-only code, and it isn't going to be
> any fun for debugging.
I think I've managed to pull the performance back on softfloat-v4 thanks
to the attribute(flatten) changes to addsub/div/mul/mulladd.
--
Alex Bennée
- [Qemu-devel] [PATCH 20/24] fpu: Implement sqrt with soft-fp.h, (continued)
- [Qemu-devel] [PATCH 20/24] fpu: Implement sqrt with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 16/24] fpu: Implement float_to_int/uint with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 15/24] fpu: Implement add/sub/mul/div with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 18/24] fpu: Implement compares with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 22/24] fpu: Implement float_to_float with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 24/24] fpu: Implement round_to_int with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 23/24] fpu: Implement muladd with soft-fp.h, Richard Henderson, 2018/02/03
- [Qemu-devel] [PATCH 10/24] fpu/soft-fp: Import soft-fp from glibc, Richard Henderson, 2018/02/03
- Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp, Howard Spoelstra, 2018/02/04
- Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp, Peter Maydell, 2018/02/04
- Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp,
Alex Bennée <=
- Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp, no-reply, 2018/02/08
- Re: [Qemu-devel] [PATCH 00/24] re-factor and add fp16 using glibc soft-fp, no-reply, 2018/02/09