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2 Commits

Author SHA1 Message Date
Peter Collingbourne
110748bbb4 [dfsan] Introduce further optimization to reduce the number of union queries. 
Specifically, do not compute a union if it is statically known that one
shadow set subsumes the other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213100 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-07-15 22:13:19 +00:00
Peter Collingbourne
f32aa7addc [dfsan] Introduce an optimization to reduce the number of union queries. 
Specifically, when building a union query, if we are dominated by an identical
query then use the result of that query instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213047 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-07-15 04:41:17 +00:00