From: Jakub Jelinek <jakub@redhat.com>
To: Hongtao Liu <crazylht@gmail.com>
Cc: Richard Biener <richard.guenther@gmail.com>,
"Jiang, Haochen" <haochen.jiang@intel.com>,
ZiNgA BuRgA <zingaburga@hotmail.com>,
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Subject: Re: Intel AVX10.1 Compiler Design and Support
Date: Tue, 22 Aug 2023 15:54:46 +0200 [thread overview]
Message-ID: <ZOS+Jvp7KXO3yLqB@tucnak> (raw)
In-Reply-To: <CAMZc-bw8ihmQ6P-Gs3M2T4BXHtqK5a-6LNVAkSh9ca_gunzA3g@mail.gmail.com>
On Tue, Aug 22, 2023 at 09:35:44PM +0800, Hongtao Liu wrote:
> Ok, then we can't avoid TARGET_AVX10_1 in those existing 256/128-bit
> evex instruction patterns.
Why?
Internally for md etc. purposes, we should have the current
TARGET_AVX512* etc. ISA flags, plus one new one, whatever we call it
(TARGET_EVEX512 even if it is not completely descriptive because of kandq
etc., or some other name) which says if 512-bit vector modes can be used,
if g modifier can be used, if the 64-bit mask operations can be used etc.
Plus, if AVX10.1 contains any instructions not covered in the preexisting
TARGET_AVX512* sets, TARGET_AVX10_1 which covers that delta, otherwise
keep -mavx10.1 just as an command line option which enables/disables
other stuff.
The current common/config/i386/i386-common.cc OPTION_MASK_ISA*SET* would be
like now, except that the current AVX512* sets imply also EVEX512/whatever
it will be called, that option itself enables nothing (or TARGET_AVX512F),
and unsetting it doesn't disable all the TARGET_AVX512*.
-mavx10.1 would enable the AVX512* sets without EVEX512/whatever.
At the end of the option processing, if EVEX512/whatever is set but
TARGET_AVX512VL is not, disable TARGET_AVX512F with all its dependencies,
because VL is a precondition of 128/256-bit EVEX and if 512-bit EVEX is not
enabled, there is nothing left.
Jakub
next prev parent reply other threads:[~2023-08-22 13:54 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 7:13 Haochen Jiang
2023-08-08 7:13 ` [PATCH 1/3] Initial support for AVX10.1 Haochen Jiang
2023-08-16 2:29 ` Hongtao Liu
2023-08-08 7:13 ` [PATCH 2/3] Emit a warning when disabling AVX512 with AVX10 enabled or disabling AVX10 with AVX512 enabled Haochen Jiang
2023-08-16 2:30 ` Hongtao Liu
2023-08-08 7:13 ` [PATCH 3/3] Emit a warning when AVX10 options conflict in vector width Haochen Jiang
2023-08-16 2:30 ` Hongtao Liu
2023-08-08 7:19 ` [PATCH 1/6] Support AVX10.1 for AVX512DQ+AVX512VL intrins Haochen Jiang
2023-08-08 7:20 ` [PATCH 2/6] " Haochen Jiang
2023-08-08 7:20 ` [PATCH 3/6] " Haochen Jiang
2023-08-08 7:20 ` [PATCH 4/6] " Haochen Jiang
2023-08-08 7:20 ` [PATCH 5/6] " Haochen Jiang
2023-08-08 7:20 ` [PATCH 6/6] " Haochen Jiang
2023-08-16 2:36 ` Hongtao Liu
2023-08-08 7:42 ` Intel AVX10.1 Compiler Design and Support Jakub Jelinek
2023-08-08 8:14 ` Jiang, Haochen
2023-08-08 12:44 ` Richard Biener
2023-08-09 2:06 ` Hongtao Liu
2023-08-09 2:08 ` Hongtao Liu
2023-08-09 6:30 ` Jiang, Haochen
2023-08-08 19:55 ` Joseph Myers
2023-08-09 1:21 ` Hongtao Liu
2023-08-09 2:14 ` Hongtao Liu
2023-08-09 2:18 ` Hongtao Liu
2023-08-09 3:59 ` Wang, Phoebe
2023-08-09 20:43 ` Joseph Myers
2023-08-09 20:49 ` Jakub Jelinek
2023-08-10 12:36 ` Phoebe Wang
2023-08-10 12:45 ` Richard Biener
2023-08-10 13:12 ` Phoebe Wang
2023-08-10 13:30 ` Jan Beulich
2023-08-10 13:52 ` Richard Biener
2023-08-10 14:15 ` Jiang, Haochen
2023-08-10 15:08 ` Zhang, Annita
2023-08-10 15:18 ` Jakub Jelinek
2023-08-10 22:16 ` Joseph Myers
2023-08-09 4:01 ` Phoebe Wang
2023-08-09 5:37 ` Richard Biener
2023-08-09 6:24 ` Jiang, Haochen
2023-08-09 8:14 ` Florian Weimer
2023-08-09 8:24 ` Hongtao Liu
2023-08-09 7:17 ` Jan Beulich
2023-08-09 7:38 ` Hongtao Liu
2023-08-09 8:04 ` Jan Beulich
2023-08-09 9:15 ` Florian Weimer
2023-08-09 10:15 ` Hongtao Liu
2023-08-09 10:17 ` Zhang, Annita
2023-08-09 13:54 ` Michael Matz
2023-08-09 14:34 ` Zhang, Annita
2023-08-10 15:08 ` Jiang, Haochen
2023-08-10 16:00 ` Jakub Jelinek
2023-08-19 22:44 ` ZiNgA BuRgA
2023-08-20 5:44 ` Richard Biener
2023-08-21 1:19 ` Hongtao Liu
2023-08-21 7:36 ` Richard Biener
2023-08-21 8:09 ` Jakub Jelinek
2023-08-21 8:28 ` Hongtao Liu
2023-08-21 8:37 ` Jakub Jelinek
2023-08-21 8:46 ` Hongtao Liu
2023-08-21 9:34 ` Richard Biener
2023-08-21 9:36 ` Richard Biener
2023-08-21 9:50 ` Hongtao Liu
2023-08-21 9:26 ` ZiNgA BuRgA
2023-08-22 3:20 ` Jiang, Haochen
2023-08-22 7:36 ` Richard Biener
2023-08-22 8:34 ` Jakub Jelinek
2023-08-22 8:35 ` Richard Biener
2023-08-22 8:52 ` Jiang, Haochen
2023-08-22 9:23 ` Richard Biener
2023-08-22 13:02 ` Hongtao Liu
2023-08-22 13:16 ` Jakub Jelinek
2023-08-22 13:23 ` Richard Biener
2023-08-22 13:35 ` Hongtao Liu
2023-08-22 13:54 ` Jakub Jelinek [this message]
2023-08-22 14:35 ` Hongtao Liu
2023-08-22 15:01 ` Jakub Jelinek
2023-08-23 1:57 ` Jiang, Haochen
2023-08-23 2:19 ` Hongtao Liu
2023-08-23 6:47 ` Jiang, Haochen
2023-08-23 8:16 ` Jakub Jelinek
2023-08-23 8:27 ` Hongtao Liu
2023-08-23 7:32 ` Richard Biener
2023-08-23 8:03 ` Jiang, Haochen
2023-08-23 8:31 ` Jakub Jelinek
2023-08-23 8:47 ` Hongtao Liu
2023-08-23 8:24 ` Hongtao Liu
2023-08-22 14:39 ` Hongtao Liu
2023-08-21 7:49 ` ZiNgA BuRgA
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