Hi Dan,

The changes look good. I've merged them in.

Slava

On Sat, Sep 26, 2009 at 1:25 PM, Daniel Ehrenberg <[email protected]> wrote:
> Hi everyone,
>
> It looks like, the way the compiler is right now, ##slot and
> ##set-slot are more complicated than they have to be. These
> instructions do two things: first, subtract the tag from the index
> given, then read or write memory from the sum of the index and the
> base pointer. If ##slot and ##set-slot didn't have to do this
> processing with the tag, they wouldn't need a temporary register.
> Potentially, this could improve register allocation and value
> numbering.
>
> I made this change, by modifying the low level IR builder to insert
> some arithmetic instructions before ##slot and ##set-slot, and the
> results are in the 'slots' branch of the main repository. I've tested
> the changes on both x86 and PPC. Slava, do these changes look good to
> you? If so, I think they're ready to be merged in.
>
> Dan
>
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