Speculative prefetching: report

Dale Johannesen dalej@apple.com
Fri Oct 15 21:30:00 GMT 2004


On Oct 15, 2004, at 1:19 PM, Zdenek Dvorak wrote:
> Hello,
>
>> 2.  In the profile-generation phase, there is a huge code bloat
>> resutling from
>> instrumenting all the loads and stores.  This badly stresses the rest
>> of the BE,
>> causing out-of-memory ICEs or unacceptably slow compile times (hours) 
>> on
>> several SPECmarks.  (With IMA to be sure.)
>
> this is bad.  I guess it should be possible to prune the references we
> try to prefetch somehow.

Implementing the instrumentation as function calls rather than
inline code might help.



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