Variable Expansion Optimization

[Mark Mitchell]

Revital Eres wrote:

>Hello,
>
>I intend to implement variable expansion 
>in the body of the unrolled loop.
>
I take it you are proposing to do this in the RTL loop unrollers? 

(On trees, we would want to maintain SSA form, so we'd have to do the 
renaming you're suggesting anyhow.)

I'd hope that soon we'd be able to get rid of the RTL-based loop 
unroller, but I'm perfectly willing to believe that day to be a ways away...

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Mark Mitchell
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