From: Ian Lance Taylor <iant@google.com>
To: Albert Abramson <abramson.albert@gmail.com>
Cc: GCC Development <gcc@gcc.gnu.org>
Subject: Re: programming language that does not inhibit further optimization by gcc
Date: Tue, 15 Oct 2013 14:45:00 -0000 [thread overview]
Message-ID: <CAKOQZ8wjrML-b97fNXHLbXUd8APrse0CaK4y91enTHL=VVA9Vg@mail.gmail.com> (raw)
In-Reply-To: <CAEvgbXFD9egt-32A00+Unf4Q7j_sa7ucBE7p7ZNFiWVnNOW+4A@mail.gmail.com>
On Mon, Oct 14, 2013 at 5:31 PM, Albert Abramson
<abramson.albert@gmail.com> wrote:
>
> Is there a language out there (similar to Fortran or a dialect of C)
> that doesn't inhibit the compiler from taking advantage of every
> optimization possible?
Sure: Fortran.
> Is there some way to provide a C/C++ compiler
> with extra information about variables and programs so that it can
> maximize performance or minimize size? For example:
>
> int age = 21; //[0, 150) setting maximum limits, compiler could use byte int
> int outsideTemp = 20; //[-273, 80]
> float ERA = 297; //[0, 1000, 3] [min, max, digits of
> accuracy needed]
Hmmm, OK, that kind of thing is available in PL/1 and, I think, in
Ada. But as far as I know it doesn't help compilers very much in
practice.
Ian
next prev parent reply other threads:[~2013-10-15 14:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-15 0:31 Albert Abramson
2013-10-15 12:00 ` Rob
2019-03-30 7:14 ` Albert Abramson
2019-03-30 10:42 ` David Brown
2013-10-15 14:45 ` Ian Lance Taylor [this message]
2013-10-15 22:09 ` gwenael chailleu
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