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Re: base + index register addressing
- To: law at cygnus dot com
- Subject: Re: base + index register addressing
- From: Richard Henderson <rth at cygnus dot com>
- Date: Fri, 17 Oct 1997 17:23:32 -0700
- Cc: meissner at cygnus dot com, egcs at cygnus dot com, gcc2 at cygnus dot com, michaelh at ongaonga dot chch dot cri dot nz
- References: <199710171637.MAA26061@tweedledumb.cygnus.com> <11849.877108032@hurl.cygnus.com>
- Reply-To: Richard Henderson <rth at cygnus dot com>
On Fri, Oct 17, 1997 at 11:07:12AM -0600, Jeffrey A Law wrote:
> Well, on targets where we do fp/ap elimination we still don't care
> all that much since most don't have reg + scaled reg/const + constant offset.
> Which is what such addresses will turn into when the fp/ap gets eliminated.
>
> I'm not saying this extension isn't useful, just that it isn't as useful
> as one might initially think.
But i386 and m68k do, which are used widely enough to make it worth it.
r~