[tree-ssa] Removal of gotos from cfg based ir

[law@redhat.com]

In message <Pine.LNX.4.44.0311140118400.31855-100000@nondot.org>, Chris Lattner
 writes:
 >On Fri, 14 Nov 2003, Zdenek Dvorak wrote:
 >> > > how do you get the edges in the cfg then?
 >> >
 >> > Def-use edges, which are tracked for all SSA values.
 >>
 >> how do you then do things like jump threading?
 >
 >What information, specifically, does jump threading need about the CFG?
Typically just preds & succs :-)

jeff