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Re: Proposed targets to deprecate for 3.4
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: "Zack Weinberg" <zack at codesourcery dot com>
- Cc: neroden at twcny dot rr dot com (Nathanael Nerode), gcc at gcc dot gnu dot org, Richard dot Earnshaw at arm dot com
- Date: Wed, 01 Oct 2003 09:52:05 +0100
- Subject: Re: Proposed targets to deprecate for 3.4
- Organization: ARM Ltd.
- Reply-to: Richard dot Earnshaw at arm dot com
zack@codesourcery.com said:
> In all cases, a letter appearing is the desirable case; no letter is
> the undesirable case;
> Q Integer registers are at least 64 bits wide.
...
> q Port can use LP64 mode integer arithmetic.
In precisely what way does having 64-bit registers make a target "more
desirable"? And in particular, in what way is doing LP64 code more
desirable, especially when the underlying architecture does not have
64-bit addressing?
R.