Speculative prefetching: report

[Zdenek Dvorak]

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.

it is not possible to insert new function calls at rtl level,
unfortunately.

Zdenek