From: Taylor Simpson <ltaylorsimpson@gmail.com>
To: Matheus Bernardino <matheus.bernardino@oss.qualcomm.com>
Cc: qemu-devel@nongnu.org, brian.cain@oss.qualcomm.com, ale@rev.ng,
anjo@rev.ng, marco.liebel@oss.qualcomm.com, philmd@linaro.org,
quic_mburton@quicinc.com, sid.manning@oss.qualcomm.com
Subject: Re: [PATCH 04/13] target/hexagon: add v68 HVX IEEE float arithmetic insns
Date: Tue, 24 Mar 2026 19:18:44 -0600 [thread overview]
Message-ID: <CAATN3Nqyiwwye-_DuTb_PEWXzhEDmAK_8oOMvwhZNPwGbm6zug@mail.gmail.com> (raw)
In-Reply-To: <CABrGZ+GDw1PwHHiBNpp0_FTOceB=d2uTNXg7nXRufubXR48hUw@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1036 bytes --]
On Tue, Mar 24, 2026 at 2:00 PM Matheus Bernardino <
matheus.bernardino@oss.qualcomm.com> wrote:
> On Tue, Mar 24, 2026 at 4:51 PM Taylor Simpson <ltaylorsimpson@gmail.com>
> wrote:
> >
> >
> >
> > On Tue, Mar 24, 2026 at 1:30 PM Matheus Bernardino <
> matheus.bernardino@oss.qualcomm.com> wrote:
> >>
> >> On Mon, Mar 23, 2026 at 5:29 PM Taylor Simpson <
> ltaylorsimpson@gmail.com> wrote:
> >>
> >> >
> >> > Do these instructions interact with the FP bits in USR (e.g.,
> rounding mode, FP exceptions)?
> >>
> >> They do not. I'll add a new env->hvx_fp_status and use that for the
> >> default nan. This way we can avoid messing up with the scalar
> >> fp_status.
> >
> >
> > That will work for the nan. Is there any programmer-visible state for
> rounding mode or FP exceptions?
>
> No, rounding is always float_round_nearest_even (the default) and
> FWICT the HVX IEEE FP functions don't track or report any FP
> exceptions.
>
OK, then disregard my comments about checking the exceptions.
[-- Attachment #2: Type: text/html, Size: 1729 bytes --]
next prev parent reply other threads:[~2026-03-25 1:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-23 13:15 [PATCH 00/13] hexagon: add missing HVX float instructions Matheus Tavares Bernardino
2026-03-23 13:15 ` [PATCH 01/13] tests/docker: Update hexagon cross toolchain to 22.1.0 Matheus Tavares Bernardino
2026-03-23 13:15 ` [PATCH 02/13] target/hexagon: fix incorrect/too-permissive HVX encodings Matheus Tavares Bernardino
2026-03-23 19:21 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 03/13] target/hexagon/cpu: add HVX IEEE FP extension Matheus Tavares Bernardino
2026-03-23 19:32 ` Taylor Simpson
2026-03-24 16:52 ` Matheus Bernardino
2026-03-24 18:48 ` Taylor Simpson
2026-03-24 19:20 ` Brian Cain
2026-03-24 19:46 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 04/13] target/hexagon: add v68 HVX IEEE float arithmetic insns Matheus Tavares Bernardino
2026-03-23 20:28 ` Taylor Simpson
2026-03-24 19:30 ` Matheus Bernardino
2026-03-24 19:51 ` Taylor Simpson
2026-03-24 19:59 ` Matheus Bernardino
2026-03-25 1:18 ` Taylor Simpson [this message]
2026-03-23 13:15 ` [PATCH 05/13] target/hexagon: add v68 HVX IEEE float min/max insns Matheus Tavares Bernardino
2026-03-23 20:47 ` Taylor Simpson
2026-03-24 20:15 ` Matheus Bernardino
2026-03-23 13:15 ` [PATCH 06/13] target/hexagon: add v68 HVX IEEE float misc insns Matheus Tavares Bernardino
2026-03-23 21:08 ` Taylor Simpson
2026-03-24 20:25 ` Matheus Bernardino
2026-03-23 13:15 ` [PATCH 07/13] target/hexagon: add v68 HVX IEEE float conversion insns Matheus Tavares Bernardino
2026-03-23 21:25 ` Taylor Simpson
2026-03-24 21:04 ` Matheus Bernardino
2026-03-25 1:15 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 08/13] target/hexagon: add v68 HVX IEEE float compare insns Matheus Tavares Bernardino
2026-03-23 21:42 ` Taylor Simpson
2026-03-26 13:00 ` Matheus Bernardino
2026-03-23 13:15 ` [PATCH 09/13] target/hexagon: add v73 HVX IEEE bfloat16 insns Matheus Tavares Bernardino
2026-03-23 22:03 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 10/13] tests/hexagon: add tests for v68 HVX IEEE float arithmetics Matheus Tavares Bernardino
2026-03-24 19:05 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 11/13] tests/hexagon: add tests for v68 HVX IEEE float min/max Matheus Tavares Bernardino
2026-03-24 19:07 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 12/13] tests/hexagon: add tests for v68 HVX IEEE float conversions Matheus Tavares Bernardino
2026-03-24 19:30 ` Taylor Simpson
2026-03-23 13:15 ` [PATCH 13/13] tests/hexagon: add tests for v68 HVX IEEE float comparisons Matheus Tavares Bernardino
2026-03-24 19:37 ` Taylor Simpson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAATN3Nqyiwwye-_DuTb_PEWXzhEDmAK_8oOMvwhZNPwGbm6zug@mail.gmail.com \
--to=ltaylorsimpson@gmail.com \
--cc=ale@rev.ng \
--cc=anjo@rev.ng \
--cc=brian.cain@oss.qualcomm.com \
--cc=marco.liebel@oss.qualcomm.com \
--cc=matheus.bernardino@oss.qualcomm.com \
--cc=philmd@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=quic_mburton@quicinc.com \
--cc=sid.manning@oss.qualcomm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox