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Re: enable maximum integer type to be 128 bits
- From: Andi Kleen <ak at muc dot de>
- To: "Jan Beulich" <JBeulich at novell dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 09 Jul 2004 10:37:31 +0200
- Subject: Re: enable maximum integer type to be 128 bits
- References: <s0ee62da.060@emea1-mh.id2.novell.com>
"Jan Beulich" <JBeulich@novell.com> writes:
>>However, there are two things you need to realize. First is that
>>supporting 128-bit integer types involves nontrivial amounts of
>>overhead in the compiler, especially on 32-bit archs. This is
>>something we'd like to fix, but it's a lot of work (we would
> basically
>>have to switch all of the constant-handling to use something like GMP
>>or MPFR - that's not out of the question, but no one has stepped up
> to
>>the plate).
>
> I don't mean to have support for this on 32-bit archs (as I already
> expressed a couple of times). On 64-bit archs, gcc already has almost
> all of the required functionality, so no fundamental work is needed.
How would you do a 32->64bit cross compiler in your model?
-Andi