Owen Anderson a05a81b10a Use a cheaper test, delaying calling find_leader() until we know that it's necessary. This improves
the time to optimize Anton's testcase from 21.1s to 17.6s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38479 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 00:09:25 +00:00
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