From: Martin Jambor <mjambor@suse.cz>
To: segher@kernel.crashing.org
Cc: Tejas Joshi <tejasjoshi9673@gmail.com>,
Jan Hubicka <hubicka@ucw.cz>,
Joseph Myers <joseph@codesourcery.com>,
GCC Mailing List <gcc@gcc.gnu.org>
Subject: Expansion of narrowing math built-ins into power instructions
Date: Mon, 29 Jul 2019 17:37:00 -0000 [thread overview]
Message-ID: <ri6imrkzqq6.fsf@suse.cz> (raw)
Hi Segher,
as you might know, Tejas is our Google Summer of Code student working on
adding built-in functions for some new math functions added in ISO/IEC
TS 18661.
His next step is to expand "functions rounding result to narrower type"
(so fadd, fsub and possibly fmul and fdiv described in
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2314.pdf) into ISA
instructions on targets that have such instructions. And Joseph
suggested when he proposed this project that POWER8 (and I suppose also
9) is one of them.
Can you please confirm this and also perhaps point Tejas to the right
pieces of power machine description and target code to emulate to
implement expansion of these functions? It would be very appreciated,
because even though me and Honza are official mentors of the project, we
are not very well versed in ppc target.
Thanks a lot,
Martin
next reply other threads:[~2019-07-29 17:37 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-29 17:37 Martin Jambor [this message]
2019-07-29 18:40 ` Segher Boessenkool
2019-07-30 19:47 ` Joseph Myers
2019-07-30 9:20 ` Florian Weimer
2019-07-30 19:49 ` Joseph Myers
2019-07-31 6:47 ` Tejas Joshi
2019-07-31 14:47 ` Segher Boessenkool
2019-08-08 18:39 ` Tejas Joshi
2019-08-08 20:05 ` Segher Boessenkool
2019-08-08 23:09 ` Joseph Myers
2019-08-10 10:24 ` Tejas Joshi
2019-08-10 16:46 ` Segher Boessenkool
2019-08-11 4:58 ` Tejas Joshi
2019-08-11 7:20 ` Segher Boessenkool
2019-08-11 12:46 ` Tejas Joshi
2019-08-11 16:59 ` Segher Boessenkool
2019-08-12 17:25 ` Tejas Joshi
2019-08-12 17:55 ` Segher Boessenkool
2019-08-12 21:20 ` Joseph Myers
2019-08-12 21:52 ` Segher Boessenkool
2019-08-14 6:15 ` Tejas Joshi
2019-08-14 7:21 ` Segher Boessenkool
2019-08-14 16:11 ` Joseph Myers
2019-08-14 20:21 ` Segher Boessenkool
2019-08-14 20:23 ` Joseph Myers
2019-08-14 21:00 ` Segher Boessenkool
2019-08-15 9:52 ` Tejas Joshi
2019-08-15 12:47 ` Richard Sandiford
2019-08-15 13:55 ` Tejas Joshi
2019-08-15 18:45 ` Segher Boessenkool
2019-08-16 10:23 ` Richard Sandiford
2019-08-17 5:40 ` Tejas Joshi
2019-08-17 8:21 ` Richard Sandiford
2019-08-19 10:46 ` Tejas Joshi
2019-08-19 13:07 ` Segher Boessenkool
2019-08-20 7:41 ` Richard Sandiford
2019-08-20 12:11 ` Segher Boessenkool
2019-08-20 12:59 ` Richard Sandiford
2019-08-20 13:46 ` Segher Boessenkool
2019-08-20 14:43 ` Richard Sandiford
2019-08-20 15:12 ` Richard Sandiford
2019-08-20 19:42 ` Segher Boessenkool
2019-08-21 17:20 ` Tejas Joshi
2019-08-21 18:28 ` Segher Boessenkool
2019-08-21 19:17 ` Segher Boessenkool
2019-08-22 3:33 ` Tejas Joshi
2019-08-22 6:25 ` Segher Boessenkool
2019-08-22 7:57 ` Tejas Joshi
2019-08-22 9:56 ` Segher Boessenkool
2019-08-23 17:17 ` Martin Jambor
2019-08-23 19:13 ` Segher Boessenkool
2019-08-24 9:53 ` Richard Sandiford
2019-08-25 13:55 ` Tejas Joshi
2019-08-25 16:47 ` Segher Boessenkool
2019-08-26 7:07 ` Tejas Joshi
2019-08-26 7:42 ` Segher Boessenkool
2019-08-30 19:12 ` Tejas Joshi
2019-08-30 20:35 ` Segher Boessenkool
2019-09-02 3:19 ` Tejas Joshi
2019-09-02 11:30 ` Segher Boessenkool
2019-08-26 13:23 ` Martin Jambor
2019-08-20 16:04 ` Joseph Myers
2019-08-15 18:54 ` Segher Boessenkool
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=ri6imrkzqq6.fsf@suse.cz \
--to=mjambor@suse.cz \
--cc=gcc@gcc.gnu.org \
--cc=hubicka@ucw.cz \
--cc=joseph@codesourcery.com \
--cc=segher@kernel.crashing.org \
--cc=tejasjoshi9673@gmail.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;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).