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Commit 1ad2c102 authored by Owen Anderson's avatar Owen Anderson
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Use a DenseMap instead of an std::map for the value numbering. This reduces... 

Use a DenseMap instead of an std::map for the value numbering.  This reduces the time to optimize lencod on a PPC Debug build from ~300s to ~140s.

llvm-svn: 37668
parent 2320d430
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