[RFC] Mixed results with O(1) PHI arg lookup

[Jeffrey A Law]

On Fri, 2004-11-05 at 07:14 -0500, Kazu Hirata wrote:
> o There may be some instances left where people do the equivalent of
>   phi_arg_from_edge without using phi_arg_from_edge.  I've found some
>   of these cases and fixed them.  One example would be tree-ssa-dom.c.
That's the only example I'm currently aware of.

jeff