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Commit feec7137 authored by Chris Lattner's avatar Chris Lattner
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Switch SelectionDAG::ReplaceAllUsesOfValueWith to use a SmallSetVector for 

the users set (most nodes have 1 or 2 users).  This speeds up the isel pass
3.2% on kimwitu.

llvm-svn: 33849
parent 0732bec9
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