From: Robert Dewar <dewar@adacore.com>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: "H. J. Lu" <hjl@lucon.org>, GCC <gcc@gcc.gnu.org>,
Mike Stump <mrs@apple.com>
Subject: Re: x86 inc/dec on core2
Date: Sun, 08 Apr 2007 10:21:00 -0000 [thread overview]
Message-ID: <4618C241.9080308@adacore.com> (raw)
In-Reply-To: <4618B7E7.2020005@gmail.com>
Uros Bizjak wrote:
> My docs say that "INC/DEC does not change the carry flag". But you have
> better resources that I, so if you think that C2D should be left out of
> X86_TUNE_USE_INCDEC, then the patch is pre-approved for mainline.
Absolutely INC/DEC do not change the carry flag, this is an important
part of the architecture, how else would you code ADC loops?
next prev parent reply other threads:[~2007-04-08 10:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-07 9:30 Uros Bizjak
2007-04-07 14:10 ` H. J. Lu
2007-04-08 10:13 ` Uros Bizjak
2007-04-08 10:21 ` Robert Dewar [this message]
2007-04-08 13:34 ` H. J. Lu
2007-04-08 16:05 ` Mike Stump
2007-04-08 16:14 ` Robert Dewar
2007-04-08 16:56 ` Uros Bizjak
2007-04-09 3:52 ` Zuxy Meng
2007-04-09 17:50 ` Mike Stump
2007-04-09 18:13 ` H. J. Lu
2007-04-09 21:58 ` H. J. Lu
2007-04-09 19:13 ` Vladimir N. Makarov
-- strict thread matches above, loose matches on Subject: below --
2007-04-06 20:27 Mike Stump
2007-04-06 21:17 ` H. J. Lu
2007-04-08 21:37 ` Vladimir N. Makarov
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