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Re: RFC patch: invariant addresses too cheap

On 10/31/2009 02:45 PM, Richard Sandiford wrote: 
I prefer the abstract address costs we have now, and in that situation,
Michael's original suggestion of having a target-defined threshold
macro seems more natural.  I'm not sure why it got shot down.

I guess it was just "this patch is ready".

I said I considered it premature, but this does not mean I would oppose it in any way, especially after you brought up an argument in favor of the target hook.

However, now I'm thinking this: if the address_cost is just meant to be compared *except for this particular occasion*, why not make "<= 0" cheap? This would of course need fixing the ix86 backend too.

Paolo

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