Tim Northover 6823900e55 DAGCombiner: fix use-counting issue when forming zextload
DAGCombiner was counting all uses of a load node  when considering whether it's
worth combining into a zextload. Really, it wants to ignore the chain and just
count real uses.

rdar://problem/13896307

llvm-svn: 185419
2013-07-02 09:58:53 +00:00
..
2013-05-28 16:31:26 +00:00