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From: "naohirot@fujitsu.com" <naohirot@fujitsu.com>
To: 'Wilco Dijkstra' <Wilco.Dijkstra@arm.com>
Cc: 'GNU C Library' <libc-alpha@sourceware.org>,
	Szabolcs Nagy <Szabolcs.Nagy@arm.com>
Subject: RE: [PATCH 0/5] Added optimized memcpy/memmove/memset for A64FX
Date: Tue, 27 Apr 2021 11:03:48 +0000	[thread overview]
Message-ID: <TYAPR01MB6025C5141394B1038059B8DFDF419@TYAPR01MB6025.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <VE1PR08MB55998EA144ACF772F1A7DD9A83489@VE1PR08MB5599.eurprd08.prod.outlook.com>

Hi Wilco-san,

This mail is a continuation of removing redundant instructions.

> From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
 
> For the first 2 CBZ cases in both [1] and [2] the fastest option is to use
> ANDS+BEQ. ANDS only requires 1 ALU operation while AND+CBZ uses 2 ALU
> operations on A64FX.

I see, I haven't used ANDS before. Thanks for the advice.
I updated memcpy[1] and memset[2].

[1] https://github.com/NaohiroTamura/glibc/commit/fca2c1cf1fd80ec7ecb93f7cd08be9aab9ca9412
[2] https://github.com/NaohiroTamura/glibc/commit/5004e34c35a20faf3e12e6ce915845a75b778cbf

Thanks.
Naohiro


  reply	other threads:[~2021-04-27 11:03 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-12 12:52 Wilco Dijkstra
2021-04-12 18:53 ` Florian Weimer
2021-04-13 12:07 ` naohirot
2021-04-14 16:02   ` Wilco Dijkstra
2021-04-15 12:20     ` naohirot
2021-04-20 16:00       ` Wilco Dijkstra
2021-04-27 11:58         ` naohirot
2021-04-29 15:13           ` Wilco Dijkstra
2021-04-30 15:01             ` Szabolcs Nagy
2021-04-30 15:23               ` Wilco Dijkstra
2021-04-30 15:30                 ` Florian Weimer
2021-04-30 15:40                   ` Wilco Dijkstra
2021-05-04  7:56                     ` Szabolcs Nagy
2021-05-04 10:17                       ` Florian Weimer
2021-05-04 10:38                         ` Wilco Dijkstra
2021-05-04 10:42                         ` Szabolcs Nagy
2021-05-04 11:07                           ` Florian Weimer
2021-05-06 10:01             ` naohirot
2021-05-06 14:26               ` Szabolcs Nagy
2021-05-06 15:09                 ` Florian Weimer
2021-05-06 17:31               ` Wilco Dijkstra
2021-05-07 12:31                 ` naohirot
2021-04-19  2:51     ` naohirot
2021-04-19 14:57       ` Wilco Dijkstra
2021-04-21 10:10         ` naohirot
2021-04-21 15:02           ` Wilco Dijkstra
2021-04-22 13:17             ` naohirot
2021-04-23  0:58               ` naohirot
2021-04-19 12:43     ` naohirot
2021-04-20  3:31     ` naohirot
2021-04-20 14:44       ` Wilco Dijkstra
2021-04-27  9:01         ` naohirot
2021-04-20  5:49     ` naohirot
2021-04-20 11:39       ` Wilco Dijkstra
2021-04-27 11:03         ` naohirot [this message]
2021-04-23 13:22     ` naohirot
  -- strict thread matches above, loose matches on Subject: below --
2021-03-17  2:28 Naohiro Tamura
2021-03-29 12:03 ` Szabolcs Nagy
2021-05-10  1:45 ` naohirot
2021-05-14 13:35   ` Szabolcs Nagy
2021-05-19  0:11     ` naohirot

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