[tree-ssa] Merge results as of 2003-05-06

[law@redhat.com]

In message <20030507130003.GB7705@tornado.toronto.redhat.com>, Diego Novillo wr
ites:
 >On Tue, May 06, 2003 at 10:24:46PM -0600, law@redhat.com wrote:
 >
 >> When/how precisely was the FUNCTION_DECL removed?!?
 >> 
 >No clue yet.  It doesn't look like it should be hard to fix,
 >though.  I'll start working on it after I commit the merge.
I'm pretty sure I've found this.  Ironically, this was the same bug I
was tracking in my work on the unused variable elimination code.

>From what I've been able to gather, removal of the toplevel BIND_EXPR
for an inlined function causes major grief for the dwarf2 code.  

[ The unused variable zapper triggered this more often because we ended up
  with more inlined funtions where their toplevel BIND_EXPR had no variables. ]

Jeff