Chris Lattner d6f0602564 switch from my nice hashtable based merging solution to a
gross little neighbor merging implementation.  This one has
the benefit of not violating the ordering of patterns, so it
generates code that passes tests again.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97218 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 08:08:41 +00:00
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