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From: Jakub Jelinek <jakub@redhat.com>
To: Joseph Myers <joseph@codesourcery.com>
Cc: "Wang, Phoebe" <phoebe.wang@intel.com>,
	Hongtao Liu <crazylht@gmail.com>,
	"Jiang, Haochen" <haochen.jiang@intel.com>,
	"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
	"ubizjak@gmail.com" <ubizjak@gmail.com>,
	"Liu, Hongtao" <hongtao.liu@intel.com>,
	"Zhang, Annita" <annita.zhang@intel.com>,
	x86-64-abi <x86-64-abi@googlegroups.com>,
	llvm-dev <llvm-dev@lists.llvm.org>,
	Craig Topper <craig.topper@gmail.com>
Subject: Re: Intel AVX10.1 Compiler Design and Support
Date: Wed, 9 Aug 2023 22:49:45 +0200	[thread overview]
Message-ID: <ZNP76e07LLDttYtx@tucnak> (raw)
In-Reply-To: <8fb470de-d2a3-3e71-be6a-ccc7f4f31a31@codesourcery.com>

On Wed, Aug 09, 2023 at 08:43:00PM +0000, Joseph Myers wrote:
> At this point it seems appropriate to remind people of another ABI 
> consideration for vector extensions.  glibc's libmvec defines vector 
> versions of various functions, including AVX512 ones (of course those 
> function versions only work on hardware with the relevant instructions).  
> glibc's headers use both _Pragma ("omp declare simd notinbranch") and 
> __attribute__ ((__simd__ ("notinbranch"))) to declare, to the compiler 
> including those headers, what function variants are available in glibc.

For omp declare simd or simd attribute that simply implies that the
variants with 512-bit vectors may only be called from -mavx512f or
-mavx10.1-512 (or how the switch will be called code), not from -mavx10.1.
We shouldn't change that ABI because of AVX10.

	Jakub


  reply	other threads:[~2023-08-09 20:49 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 [this message]
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
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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