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Chris Lattner
c2563bf614
Change Type::isAbstract to have better comments, a more correct name
(PromoteAbstractToConcrete), and to use a set to avoid recomputation. In particular, this set eliminates the potentially exponential cases from this little recursive algorithm. On a particularly nasty testcase, llvm-dis on the .bc file went from 34 minutes (which is when I killed it, it still hadn't finished) to 0.57s. Remember kids, exponential algorithms are bad. llvm-svn: 16772
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