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Message-ID: <CAK1hOcMtnZLy7Kw36YQWdi3tzmACepAWjQ=_82GuE_NUHd0hpw@mail.gmail.com>
Date: Tue, 17 Feb 2015 19:53:28 +0100
From: Denys Vlasenko <vda.linux@...glemail.com>
To: Rich Felker <dalias@...c.org>
Cc: musl <musl@...ts.openwall.com>
Subject: Re: [PATCH] x86_64/memset: use "small block" code for blocks
up to 30 bytes long
On Tue, Feb 17, 2015 at 6:40 PM, Rich Felker <dalias@...c.org> wrote:
>> With your program I see similar results:
>>
>> ....
>> size 50: min=10, avg=10 min=10, avg=10
>> size 52: min=10, avg=10 min=10, avg=10
>
> The ... was the part where mine seemed better. :)
Do you seriously think I would go as low as lying by omission?
Here are the full, unabridged files of three runs of both algorithms.
$ gcc -O2 -Wall memset-cycles-vda.c vda1.s.
$ ./a.out >vda1.OUT1 && ./a.out >vda1.OUT2 && ./a.out >vda1.OUT3
$ gcc -O2 -Wall memset-cycles-vda.c my2.s.
$ ./a.out >my2.OUT1 && ./a.out >my2.OUT2 && ./a.out >my2.OUT3
View attachment "memset-cycles-vda.c" of type "text/x-csrc" (1222 bytes)
Download attachment "my2.OUT1" of type "application/octet-stream" (1532 bytes)
Download attachment "my2.OUT2" of type "application/octet-stream" (1532 bytes)
Download attachment "my2.OUT3" of type "application/octet-stream" (1532 bytes)
Download attachment "vda1.OUT1" of type "application/octet-stream" (1532 bytes)
Download attachment "vda1.OUT2" of type "application/octet-stream" (1534 bytes)
Download attachment "vda1.OUT3" of type "application/octet-stream" (1533 bytes)
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