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Author SHA1 Message Date
Daniel Dunbar 2842f25625 Fix const ilist_node::get{Prev,Next}Node() to actually compile. Picky, picky. 
llvm-svn: 103723
 2010-05-13 18:35:02 +00:00
Daniel Dunbar 959ae59997 ADT: Add ilist_node::get{Prev,Next}Node, which return the adjacent node or null. 
- This provides a convenient alternative to using something llvm::prior or
   manual iterator access, for example::

    if (T *Prev = foo->getPrevNode())
      ...

   instead of::

     iterator it(foo);
     if (it != begin()) {
       --it;
       ... 
     }

 - Chris, please review.

llvm-svn: 103647
 2010-05-12 21:35:19 +00:00