From: Jeffrey A Law <law@hurl.cygnus.com>
To: hjl@lucon.org (H.J. Lu)
Cc: egcs@egcs.cygnus.com
Subject: Re: gcc-2.7 creates faster code than pgcc-1.1.1
Date: Wed, 31 Mar 1999 23:46:00 -0000 [thread overview]
Message-ID: <13885.920607250@hurl.cygnus.com> (raw)
Message-ID: <19990331234600.N2hOkQWBNmToyckbW-azVcxsLuL7r8G5zp7hlYXKwjI@z> (raw)
In-Reply-To: <m10Ilq3-00000YC@ocean.lucon.org>
In message < m10Ilq3-00000YC@ocean.lucon.org >you write:
> Just keep in mind that this small change speeds up gzip by 10-20% on
> PPro, P/II and maybe P/III. It may be true also for 386. According
> to TARGET_ZERO_EXTEND_WITH_AND, only 486 and Pentium seems to prefer
> "and".
But that does not make the patch correct. Period.
> BTW, FWIW, "movzbl" has 3 bytes and "addl" has 5 bytes. So "movzbl" is
> smaller and faster on 386, PPro, P/II and P/III.
Correct. That is precisely one of the changes in my patch.
jeff
next prev parent reply other threads:[~1999-03-31 23:46 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-03-04 14:31 H.J. Lu
[not found] ` < m10Igdx-000AUaC@shanghai.varesearch.com >
1999-03-04 16:04 ` Martin v. Loewis
[not found] ` < 199903050001.BAA00973@mira.isdn.cs.tu-berlin.de >
1999-03-04 16:46 ` H.J. Lu
[not found] ` < m10Iil3-000393C@ocean.lucon.org >
1999-03-04 17:03 ` Joe Buck
[not found] ` < 199903050102.RAA06944@atrus.synopsys.com >
1999-03-04 17:06 ` H.J. Lu
1999-03-31 23:46 ` H.J. Lu
1999-03-31 23:46 ` Joe Buck
1999-03-05 6:52 ` craig
[not found] ` < 19990305145306.4796.qmail@deer >
1999-03-05 9:18 ` Jeffrey A Law
1999-03-31 23:46 ` Jeffrey A Law
1999-03-31 23:46 ` craig
1999-03-31 23:46 ` H.J. Lu
1999-03-04 18:08 ` Jeffrey A Law
[not found] ` < 13494.920599668@hurl.cygnus.com >
1999-03-04 20:03 ` H.J. Lu
[not found] ` < m10Ilq3-00000YC@ocean.lucon.org >
1999-03-04 20:14 ` Jeffrey A Law [this message]
1999-03-31 23:46 ` Jeffrey A Law
1999-03-31 23:46 ` H.J. Lu
1999-03-31 23:46 ` Jeffrey A Law
1999-03-31 23:46 ` Martin v. Loewis
1999-03-31 23:46 ` H.J. Lu
-- strict thread matches above, loose matches on Subject: below --
1999-03-09 1:19 Òåðåõèà Âÿ÷åñëà â
1999-03-31 23:46 ` Òåðåõèà Âÿ÷åñëà â
1999-03-04 23:11 Терехин Вячеслав
[not found] ` < 005601be66d7$ae033480$288230d4@main.medtech.ru >
1999-03-05 9:22 ` Alfred Perlstein
[not found] ` < Pine.BSF.3.96.990305121935.7355C-100000@cygnus.rush.net >
1999-03-05 13:02 ` Richard Henderson
1999-03-31 23:46 ` Richard Henderson
1999-03-31 23:46 ` Alfred Perlstein
1999-03-05 15:52 ` H.J. Lu
1999-03-31 23:46 ` H.J. Lu
1999-03-31 23:46 ` Терехин Вячеслав
1999-03-04 3:40 Терехин Вячеслав
[not found] ` < 001401be6633$fed21a60$a18330d4@main.medtech.ru >
1999-03-04 13:20 ` Jamie Lokier
[not found] ` < 19990304222018.A21939@pcep-jamie.cern.ch >
1999-03-04 17:05 ` Zack Weinberg
[not found] ` < 199903050104.UAA15335@octiron.phys.columbia.edu >
1999-03-04 18:09 ` Jeffrey A Law
[not found] ` <law@hurl.cygnus.com>
[not found] ` < 13506.920599740@hurl.cygnus.com >
1999-03-04 20:04 ` David Edelsohn
[not found] ` < 9903050403.AA36338@marc.watson.ibm.com >
1999-03-04 20:31 ` Jeffrey A Law
[not found] ` < 13939.920608288@hurl.cygnus.com >
1999-03-05 6:53 ` craig
[not found] ` < 19990305143358.4747.qmail@deer >
1999-03-05 9:30 ` Jeffrey A Law
[not found] ` < 15755.920655014@hurl.cygnus.com >
1999-03-05 10:18 ` Joe Buck
1999-03-31 23:46 ` Joe Buck
1999-03-05 10:19 ` craig
1999-03-31 23:46 ` craig
1999-03-31 23:46 ` Jeffrey A Law
1999-03-31 23:46 ` craig
1999-03-31 23:46 ` Jeffrey A Law
1999-03-07 11:01 ` Zack Weinberg
1999-03-31 23:46 ` Zack Weinberg
1999-03-31 23:46 ` David Edelsohn
1999-03-31 23:46 ` Jeffrey A Law
1999-03-31 23:46 ` Zack Weinberg
1999-03-31 23:46 ` Jamie Lokier
1999-03-31 23:46 ` Терехин Вячеслав
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