Commit bd7684c9 authored by Benjamin Kramer's avatar Benjamin Kramer
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GVN: Fix quadratic runtime on the number of switch cases. 

No intended behavior change.  This was introduced in r162023.  With the fixed
algorithm a Release build of ARMInstPrinter.cpp goes from 16s to 10s on a
2011 MBP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162559 91177308-0d34-0410-b5e6-96231b3b80d8
parent 4d320db5
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