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Re: divmod , division+modulo problem in rtl
- From: Pierre Mallard <pierremallard at yahoo dot fr>
- To: Momchil Velikov <velco at fadata dot bg>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 16 Oct 2002 14:01:40 +0200 (CEST)
- Subject: Re: divmod , division+modulo problem in rtl
-gcc-3.0.4, c language-
Hi and thanks a lot.
I did not get any better things after having change
those few lines.
Anyway ok I just leave it now for catching div and mod
the same time..
But the problem I got here right now is the matching
of a divmodqi4 describe in a define_expand:
My word are define as being 16 bits long same as for
my char whereas my int are 32 bits long.
when I do
char a,b,c;
c=a/b
I can't make gcc understand I need divmodqi4 and not
divmodhi4..
Gcc is always passing throw divmodhi4 and never in
divmodqi4...
I'm really disappointed think I may have missed
something cause lots of different proc implements
divmodqi4 especially avr one which as approximately
the same definition as me for the words , char and int
except it's twice less...
In my configuration divmodqi4 dosn't look as it can be
match once...
Pierre
--- Momchil Velikov <velco@fadata.bg> a écrit : >
>>>>> "Pierre" == Pierre Mallard
> <pierremallard@yahoo.fr> writes:
>
> Pierre> Hi,
> Pierre> I need someone's help to output a single
> operation for
> Pierre> an operation such as a (div a b)+(mod a b)
> in c
> Pierre> language only...
>
> See if this patch will help
>
http://gcc.gnu.org/ml/gcc-patches/2002-07/msg01207.html
>
> Pierre> 2)And if u got any idea how a Signed Qi
> division can
> Pierre> be handle by a Qi signed division ... let me
> just show
> It can't, in C at least.
>
> ~velco
>
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