From: Michael Matz <matz@suse.de>
To: Wolfgang Kuehn <wolfgang.kuehn@kristensen.de>
Cc: Richard Henderson <rth@redhat.com>, gcc@gcc.gnu.org
Subject: Re: register variable is clobbered by passing parameter to a function
Date: Tue, 16 Mar 2004 12:39:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.58.0403161334040.26679@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0403161322580.26679@wotan.suse.de>
Hi,
On Tue, 16 Mar 2004, Michael Matz wrote:
> > may be useful in programs such as programming language interpreters which
> > have a couple of global variables that are accessed very often.
>
> This says nothing about local register variables, like you used.
Excuse me, I confused you with another one ;-) Your problem is that r16
is used to pass arguments. The use of that register as gobal register var
doesn't prevent this, so it will be changed over function calls.
Ciao,
Michael.
next prev parent reply other threads:[~2004-03-16 12:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-15 10:54 Wolfgang Kuehn
2004-03-15 22:51 ` Richard Henderson
2004-03-16 11:50 ` Wolfgang Kuehn
2004-03-16 12:30 ` Michael Matz
2004-03-16 12:39 ` Michael Matz [this message]
2004-03-16 12:43 ` Dave Korn
2004-03-16 13:00 ` Ian Lance Taylor
2004-03-16 13:21 ` Dave Korn
2004-03-16 10:20 ` Dave Korn
2004-03-16 14:18 Wolfgang Kuehn
2004-03-16 14:47 ` Ian Lance Taylor
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