From: Matthew Woodcraft <mattheww@chiark.greenend.org.uk>
To: gcc@gcc.gnu.org
Subject: Re: Where does the C standard describe overflow of signed integers?
Date: Thu, 14 Jul 2005 17:57:00 -0000 [thread overview]
Message-ID: <20050714175713.GA16889@chiark.greenend.org.uk> (raw)
In-Reply-To: <BEFB337F.ACF1%schlie@comcast.net>
Paul Schlie wrote:
>As optimization seems to be a non-argument, as by analogy all
>optimizations which are available for unsigned arithmetic are
>correspondingly available for signed integer operations; as any signed
>value may then be thought of as being unsigned for the purposes of
>computation and/or comparison.
What about optimising x*2/2 to x?
-M-
next prev parent reply other threads:[~2005-07-14 17:57 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-14 1:10 Paul Schlie
2005-07-14 1:59 ` Robert Dewar
2005-07-14 5:28 ` Paul Schlie
2005-07-14 17:57 ` Matthew Woodcraft [this message]
2005-07-14 18:36 ` Paul Koning
-- strict thread matches above, loose matches on Subject: below --
2005-07-14 19:09 Paul Schlie
2005-07-14 19:13 ` Robert Dewar
2005-07-14 19:28 ` Paul Schlie
2005-07-14 19:33 ` Robert Dewar
2005-07-14 20:13 ` Paul Schlie
2005-07-15 13:20 ` Georg Bauhaus
2005-07-15 13:33 ` Georg Bauhaus
2005-07-15 14:31 ` Dave Korn
2005-07-16 12:04 ` Georg Bauhaus
2005-07-16 14:26 ` Paul Schlie
2005-07-15 15:03 ` Paul Schlie
2005-07-16 12:12 ` Georg Bauhaus
2005-07-14 20:35 ` Paul Koning
2005-07-14 21:58 ` Paul Schlie
2005-07-15 7:04 ` Avi Kivity
2005-07-11 14:58 Nicholas Nethercote
2005-07-11 15:07 ` Dave Korn
2005-07-11 16:07 ` Nicholas Nethercote
2005-07-11 17:04 ` Dave Korn
2005-07-11 15:15 ` Nathan Sidwell
2005-07-11 15:23 ` Dave Korn
2005-07-12 23:13 ` Michael Meissner
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