[perl #44229] [CAGE] Review Dominance Computations in IMCC

[James Keenan via RT]

On Sat Jul 28 21:17:05 2007, chromatic at wgz.org wrote:
> Profiling some of the PGE tests reveals that our register allocation
> is fairly
> expensive.  Most of the time is in computing our dominators, and most
> of that
> time goes through repeated calls to set_contains.

Is this situation still true?  What steps could we take to get
improvements here?

Thank you very much.
kid51