Benjamin Kramer 96edb648e2 ValueMap: Use DenseMap's find_as mechanism to reduce use list churn.
Otherwise just looking up a value in the map requires creating a VH, adding it to the use lists and destroying it again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157124 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-19 19:15:32 +00:00
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2012-05-11 23:34:39 +00:00
2012-05-09 17:23:48 +00:00