From: Richard Guenther <richard.guenther@gmail.com>
To: DJ Delorie <dj@redhat.com>
Cc: Ulrich Weigand <uweigand@de.ibm.com>, gcc-patches@gcc.gnu.org
Subject: Re: m32c support for named addr spaces branch
Date: Tue, 20 Oct 2009 09:27:00 -0000 [thread overview]
Message-ID: <84fc9c000910200212r13cf361bpca6f54071e6b0da@mail.gmail.com> (raw)
In-Reply-To: <200910192018.n9JKIg0f013560@greed.delorie.com>
On Mon, Oct 19, 2009 at 10:18 PM, DJ Delorie <dj@redhat.com> wrote:
>
>> It may be the problem is indeed that in DJ's situation, sizetype is
>> a 16-bit integer type, while (__far) pointers are of a wider type.
>
> Indeed, m32c has a lot of problems with the "size types size extend"
> rule, because it's not always right. Size types should extend to
> pointer size according to their native signedness, *then* extend
> signed if needed.
I don't think this observation is correct. sizetypes are _always_
sign-extended. At least this is how it is implemented for constants
since forever and of course deviating for non-constants would
be bogus here.
Richard.
next prev parent reply other threads:[~2009-10-20 9:13 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
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 [this message]
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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