Re: Register storage type

Newsgroups	comp.lang.c
From	Seebs <usenet-nospam@seebs.net>
Subject	Re: Register storage type
References	(5 earlier) <iqk7t1$u3f$1@speranza.aioe.org> <ln1v02i5az.fsf@nuthaus.mib.org> <iqms36$vj1$1@speranza.aioe.org> <slrnisvjb4.34t.angel+news@pearlgates.net> <iqosvm$eap$1@dont-email.me>
Message-ID	<slrnit03pp.8l9.usenet-nospam@guild.seebs.net> (permalink)
Date	2011-05-15 17:43 +0000
Organization	Megabitz - More USENET, Faster USENET

Show all headers | View raw

On 2011-05-15, Eric Sosman <esosman@ieee-dot-org.invalid> wrote:
>      Back in the day when compilers paid serious attention to `register',
> "bad stuff" could indeed happen.  I recall two unpleasantesses:

>      - The compiler might dutifully dedicate CPU registers to variables,
>        making them unavailable for other uses.  This could cause even
>        fairly simple expressions to fail to compile, if too few CPU
>        registers remained to hold the intermediate results.

In fact, I've seen a modern compiler do this within the last couple of
years, though it was from something a bit more elaborate than just
"register".  There exist circumstances under which one popular C library
can be induced to cause horrible compiler failures on x86 because it inlines
string routines in ways that chew up registers.

-s
-- 
Copyright 2011, all wrongs reversed.  Peter Seebach / usenet-nospam@seebs.net
http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures
http://en.wikipedia.org/wiki/Fair_Game_(Scientology) <-- get educated!
I am not speaking for my employer, although they do rent some of my opinions.

Thread

Register storage type Free Willy <nospam@nospam.com> - 2011-05-12 20:55 +0000
  Re: Register storage type Kenneth Brody <kenbrody@spamcop.net> - 2011-05-12 17:02 -0400
    Re: Register storage type Free Willy <nospam@nospam.com> - 2011-05-12 21:13 +0000
      Re: Register storage type Angel <angel+news@spamcop.net> - 2011-05-12 21:20 +0000
      Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-12 14:27 -0700
        Re: Register storage type Kenneth Brody <kenbrody@spamcop.net> - 2011-05-13 13:20 -0400
          Re: Register storage type Free Willy <nospam@nospam.com> - 2011-05-13 21:30 +0000
            Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-13 15:50 -0700
              Different languages (Was: Register storage type) gazelle@shell.xmission.com (Kenny McCormack) - 2011-05-14 08:58 +0000
                Re: Different languages (Was: Register storage type) Dr Nick <3-nospam@temporary-address.org.uk> - 2011-05-14 10:09 +0100
              Re: Register storage type Free Willy <nospam@nospam.com> - 2011-05-14 21:27 +0000
                Re: Register storage type Ian Collins <ian-news@hotmail.com> - 2011-05-15 09:55 +1200
                Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-14 16:46 -0700
                Re: Register storage type Jens <jens.gustedt@gmail.com> - 2011-05-15 10:08 -0700
                Re: Register storage type James Kuyper <jameskuyper@verizon.net> - 2011-05-15 14:09 -0400
                Re: Register storage type David Thompson <dave.thompson2@verizon.net> - 2011-05-19 01:50 -0400
                Re: Register storage type Stephen Sprunk <stephen@sprunk.org> - 2011-05-15 00:27 -0500
                Re: Register storage type Angel <angel+news@spamcop.net> - 2011-05-15 12:56 +0000
                Re: Register storage type Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-05-15 11:54 -0400
                Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-15 17:43 +0000
                Re: Register storage type Tim Rentsch <txr@alumni.caltech.edu> - 2011-05-18 23:37 -0700
                Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-19 14:37 +0000
                Drift: Linguistics (was Re: Register storage type) Kenneth Brody <kenbrody@spamcop.net> - 2011-05-19 13:17 -0400
                Re: Register storage type Tim Rentsch <txr@alumni.caltech.edu> - 2011-05-19 11:05 -0700
                Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-19 19:08 +0000
                Re: Register storage type Tim Rentsch <txr@alumni.caltech.edu> - 2011-05-24 00:39 -0700
                Re: Register storage type Ian Collins <ian-news@hotmail.com> - 2011-05-20 07:46 +1200
                Re: Register storage type Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-05-19 22:37 -0400
                Re: Register storage type Michael Press <rubrum@pacbell.net> - 2011-05-25 12:57 -0700
                Re: Register storage type pete <pfiland@mindspring.com> - 2011-05-15 09:09 -0400
      Re: Register storage type Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-05-12 21:57 -0400
  Re: Register storage type Angel <angel+news@spamcop.net> - 2011-05-12 21:14 +0000
    Re: Register storage type gordonb.unc3q@burditt.org (Gordon Burditt) - 2011-05-13 07:49 -0500
  Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-12 14:20 -0700
    Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-12 21:59 +0000
      Re: Register storage type BGB <cr88192@hotmail.com> - 2011-05-12 15:50 -0700
      Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-12 15:49 -0700
        Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-12 23:19 +0000
          Re: Register storage type Keith Thompson <kst-u@mib.org> - 2011-05-12 16:29 -0700
            Re: Register storage type Seebs <usenet-nospam@seebs.net> - 2011-05-13 00:15 +0000
  Re: Register storage type Columbus sailed the ocean China Blue <chine.bleu@yahoo.com> - 2011-05-12 15:24 -0700
  Re: Register storage type Peter Nilsson <airia@acay.com.au> - 2011-05-12 17:39 -0700

csiph-web