[PATCH]: Reduce memory usage and compile time necessary for pruning

[Daniel Berlin]

On Sat, 2006-03-04 at 18:41 +0100, Eric Botcazou wrote:
> > This may get a pretty conservative answer here if the above code is
> > common, possibly waste a lot of memory and compile time.
> 
> It is pretty common for the Ada compiler, we have dozens of similar ICEs in 
> our internal testsuite at the moment.
> 
> > The only way i can think of to determine which vdefs are from the lhs of
> > a call is to temporarily move the call clobbered bitmap out of the way,
> > call update_stmt, and see what vdefs are left.
> >
> > It scares me that this even popped into my head.
> 
> Thanks for your feedback. :-)
> 

Try the attached, and let me know if it fixes your problem.

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