From: Tsukasa OI <research_trasio@irq.a4lg.com>
To: Kito Cheng <kito.cheng@gmail.com>, Nelson Chu <nelson.chu@sifive.com>
Cc: Binutils <binutils@sourceware.org>
Subject: Re: [RFC PATCH 0/5] RISC-V: Add Half-precision floating point extensions
Date: Wed, 18 May 2022 18:31:00 +0900 [thread overview]
Message-ID: <60d3cc0a-1a49-b66c-c72e-69fb32babf43@irq.a4lg.com> (raw)
In-Reply-To: <CA+yXCZC=CBGNzrXk=ZEVsPMJJ3qCR+he+_qXcqnMm5E-F6H4tA@mail.gmail.com>
Hi Kito,
Thanks for letting me know. I think I can rebase or port my work to
Nelson's implementation.
Hi Nelson,
It's good to know that you implemented Zfh. I think I can port my
Zfhmin patch and testcases based on your work.
My original submission did not contain floating point data pseudo-op in
the assembler (like F, D and Q) and I didn't know .float, .single and
.double are already available on GAS (non arch-specific). Since
.float16 is currently RISC-V+GNU-specific, it would be nicer if we have
discussion on ... for instance, riscv-asm-manual.
Best Regards,
Tsukasa
On 2022/05/18 10:43, Kito Cheng wrote:
> HI Tsukasa:
>
> Nelson has ported his zfh implementation from integration branch to
> trunk, did you mind base that on to adding zfhmin?
>
> On Tue, Jan 11, 2022 at 6:48 PM Tsukasa OI via Binutils
> <binutils@sourceware.org> wrote:
>>
>> This patchset adds support for two recently ratified RISC-V extensions:
>>
>> - Zfhmin (Half-precision floating point: conversion only)
>> - Zfh (Half-precision floating point: full arithmetic)
>>
>> This patchset was intended to be a part of Binutils 2.38 but I was
>> getting too impatient. I tested this patchset with Spike simulator and
>> tested that a few programs with fp16 was working nicely. However, this
>> patchset lacks full testsuite.
>>
>> The only reason I didn't make one was simple: all of floating point
>> extensions ('F', 'D' and 'Q') didn't have full testsuite. Thanks to the
>> fact that this patchset is too late for Binutils 2.38, we have time to
>> add full testsuite for all floating point extensions.
>>
>> Also, this patchset lacks pseudoinstructions (intentionally). Possible
>> pseudoinstructions to implement later would be:
>>
>> - fmv.h
>> - fneg.h
>> - fabs.h
>>
>> Besides that, we can begin testing 'Zfh' and 'Zfhmin' extensions with
>> this patchset.
>>
>>
>>
>>
>> Tsukasa OI (5):
>> RISC-V: Add 'Zfh' and 'Zfhmin' extensions
>> RISC-V: Add insn classes for Zfh/Zfhmin extensions
>> RISC-V: Add 'Zfh' and 'Zfhmin' instructions
>> RISC-V: Add 'flh' and 'fsh' macro instructions
>> RISC-V: Add 'Zfh'/'Zfhmin' conflict message
>>
>> bfd/elfxx-riscv.c | 16 +++++-
>> gas/config/tc-riscv.c | 10 ++++
>> include/opcode/riscv-opc.h | 108 +++++++++++++++++++++++++++++++++++++
>> include/opcode/riscv.h | 6 +++
>> opcodes/riscv-opc.c | 62 +++++++++++++++++++++
>> 5 files changed, 201 insertions(+), 1 deletion(-)
>>
>>
>> base-commit: 9ed5be5650ba7c315cd7cfacccc9208de2f555df
>> --
>> 2.32.0
>>
>
next prev parent reply other threads:[~2022-05-18 9:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 10:47 Tsukasa OI
2022-01-11 10:48 ` [RFC PATCH 1/5] RISC-V: Add 'Zfh' and 'Zfhmin' extensions Tsukasa OI
2022-01-11 10:48 ` [RFC PATCH 2/5] RISC-V: Add insn classes for Zfh/Zfhmin extensions Tsukasa OI
2022-01-11 10:48 ` [RFC PATCH 3/5] RISC-V: Add 'Zfh' and 'Zfhmin' instructions Tsukasa OI
2022-01-11 10:48 ` [RFC PATCH 4/5] RISC-V: Add 'flh' and 'fsh' macro instructions Tsukasa OI
2022-01-11 10:48 ` [RFC PATCH 5/5] RISC-V: Add 'Zfh'/'Zfhmin' conflict message Tsukasa OI
2022-05-18 1:43 ` [RFC PATCH 0/5] RISC-V: Add Half-precision floating point extensions Kito Cheng
2022-05-18 9:31 ` Tsukasa OI [this message]
2022-05-22 5:15 ` [PATCH v2 0/4] RISC-V: Float16 extensions enhancements Tsukasa OI
2022-05-22 5:15 ` [PATCH v2 1/4] RISC-V: Refactor 'Zfh'-related macros Tsukasa OI
2022-05-22 5:15 ` [PATCH v2 2/4] RISC-V: Add instruction declaration for 'Zfh' Tsukasa OI
2022-05-22 5:15 ` [PATCH v2 3/4] RISC-V: Add 'Zfhmin' (and refactor 'Zfh') Tsukasa OI
2022-05-22 5:15 ` [PATCH v2 4/4] RISC-V: Add 'Zfh' / 'Zfhmin' conflict message Tsukasa OI
2022-05-22 9:11 ` [PATCH 0/1] RISC-V: Zfh extension diagnostic addition Tsukasa OI
2022-05-22 9:11 ` [PATCH 1/1] RISC-V: Add extension diagnostics to Zfh Tsukasa OI
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