From: DJ Delorie <dj@redhat.com>
To: "Ulrich Weigand" <uweigand@de.ibm.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: m32c support for named addr spaces branch
Date: Thu, 15 Oct 2009 18:11:00 -0000 [thread overview]
Message-ID: <200910151807.n9FI7QYW015344@greed.delorie.com> (raw)
In-Reply-To: <200910151801.n9FI1wo7032753@d12av02.megacenter.de.ibm.com> (uweigand@de.ibm.com)
> Hmm, I'm assuming the HI originates from a signed variable at
> source code level? In this case, it actually might really be
> negative ...
I tried changing that variable to unsigned, didn't help.
> I guess one could make the assumption that negative offsets
> relative to the start of a global variable (symbol_ref) are
> undefined. In that case, you might maybe try to replace the
> sign_extend with a zero_extend in legitimize_address?
Yes, I thought of that too ;-)
That would limit far objects to 32k, vs 64k. Not sure if that's
acceptable or not, but I suppose I could enable that addressing mode
with a command line switch.
next prev parent reply other threads:[~2009-10-15 18:07 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-15 4:17 DJ Delorie
2009-10-15 18:07 ` Ulrich Weigand
2009-10-15 18:11 ` DJ Delorie [this message]
2009-10-16 14:19 ` Ulrich Weigand
2009-10-16 18:22 ` DJ Delorie
2009-10-16 22:05 ` DJ Delorie
2009-10-19 14:28 ` Ulrich Weigand
2009-10-19 14:36 ` Richard Guenther
2009-10-19 17:45 ` Ulrich Weigand
2009-10-19 20:57 ` DJ Delorie
2009-10-20 9:27 ` Richard Guenther
2009-10-20 18:10 ` DJ Delorie
2009-10-21 10:20 ` Richard Guenther
2009-10-27 18:32 ` Ulrich Weigand
2009-10-28 11:29 ` Richard Guenther
2009-10-29 18:32 ` Fix PR tree-optimization/41857 (Re: m32c support for named addr spaces branch) Ulrich Weigand
2009-10-30 9:51 ` Richard Guenther
2009-11-02 9:38 ` Zdenek Dvorak
2009-11-16 20:07 ` [patch] Fix regression (Re: Fix PR tree-optimization/41857) Ulrich Weigand
2009-11-17 15:40 ` Richard Guenther
2009-11-17 16:03 ` Zdenek Dvorak
2009-11-17 16:14 ` Richard Guenther
2009-11-17 16:29 ` Zdenek Dvorak
2009-11-17 16:31 ` Richard Guenther
2009-11-17 16:51 ` Zdenek Dvorak
2009-10-30 15:55 ` m32c support for named addr spaces branch Ulrich Weigand
2009-10-16 23:57 ` DJ Delorie
2009-10-19 14:50 ` Ulrich Weigand
2009-10-29 18:37 ` [patch] Address-space-aware base registers (Re: m32c support for named addr spaces branch) Ulrich Weigand
2009-10-29 19:54 ` DJ Delorie
2009-10-29 20:18 ` DJ Delorie
2009-10-29 21:33 ` Ulrich Weigand
2009-10-29 22:50 ` DJ Delorie
2009-10-30 14:51 ` Ulrich Weigand
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